|Publication number||US3788326 A|
|Publication date||Jan 29, 1974|
|Filing date||Aug 3, 1972|
|Priority date||Jul 29, 1970|
|Publication number||US 3788326 A, US 3788326A, US-A-3788326, US3788326 A, US3788326A|
|Original Assignee||H Jacobs|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (12), Referenced by (206), Classifications (28)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent [191 Jacobs [451 Jan. 29, 1974 DISTALLY PERFORATED CATHETER FOR USE IN VENTILATING SYSTEM  Inventor: Harvey Barry Jacobs, 116-13 Vantage Hill Rd., Reston, Va.
 Filed: Aug. 3, 1972  Appl. No.: 277,627
Related US. Application Data  Continuation-impart of Ser. No. 59,206, July 29,
1970, Pat. N0. 3,682,166.
 US. Cl. 128/305, 128/351, 128/349 B  Int. Cl A61m 25/00  Field of Search... 128/305, 329, 343, 344, 347,
128/349 R, 349 B, 351, 129, 3, 2 M, DIG. 9,
 References Cited UNITED STATES PATENTS 3,459,189 8/1969 Alley et a1. 128/221 3,680,562 8/1972 Wittes 128/347 3,800 10/1844 Gale 128/349 R 3,459,188 8/1969 Roberts 128/347 1,740,174 12/1929 l-levern 128/349 3,707,151 12/1972 Jackson 128/349 B 3,182,663 5/1965 Abelson 128/351 3,653,388 4/1972 Tenckhoff... 128/347 3,688,773 9/1972 Weiss 128/305 2,976,865 3/1961 Shipley.... 128/349 R 3,398,747 8/1968 Raimo 128/351 FOREIGN PATENTS OR APPLICATIONS 229,749 7/1969 U.S.S.R 128/329 Primary ExaminerRichard A. Gaudet Assistant Examinerl-lenry .1. Recla Attorney, Agent, or FirmAbraham A. Saffitz [5 7] ABSTRACT A balloon or cuff is combined with a distally perforated soft plastic tracheal catheter over a wedge in the middle part of the catheter. The catheter is molded from non-pyrogenic thermoplastic material such as polyethylene, polytetrafluorethylene, polypropylene, poly-carbonate or other readily sterilized orientable material which is precurved at its proximate end for insertion percutaneously or is straight for insertion through the mouth and is perforated at its distal end to divert part or all of the ventilating stream passing through the catheter. lf improper positioning of the axial outlet in relation to the tracheal lumen occurs, these distal perforations in the straight and precurved species permit air under pressure to be diverted from the axial outlet thereby preventing air embolisms while the air passing through the wedge blows up the balloon to press it against the trachea. These air embolisms occur and are created due only to the diffusion of air into the tissues impinged upon by the high pressure oxygenated gas flow at the axial outlet. At normal flow with proper placement no more than ten to twenty-five percent of the air passes out of the sides and this diversion maintains the desired medial axial positioning of the catheter in the tracheal lumen. This high pressure is created cyclically, the wedge diverting pressure from within the catheter to blow up the balloon under the pressure cycle of the ventilator and to permit collapse in the succeeding cycle. When air flow ceases through the wedge of the catheter, the elasticity of the balloon is such as to cause the balloon to collapse and rest against the catheter, thereby providing the function of a cuff. The cuff function of the balloon minimizes retrograde air leak during the inflation cycle.
8 Claims, 20 Drawing Figures SHEET 1 BF 4 CRICO THYRO| MEMBRANE TRACHEA/ PATENTEB JAN 29 i8? sum 2 0? 4 DISTALLY PERFORATED CATHETER FOR USE IN VENTILATING SYSTEM This application is a continuation in part of my copending application, Ser. No. 59,206 filed July 29, 1970 now US. Pat. No. 3,682,166.
In my co-pending application, I disclosed a tracheal catheter for use in ventilating systems using air or oxygenated gas and for insertion percutaneously into the tracheal lumen. In my prior patent application, the catheter was made of a plastic material which has a plastic memory and was fabricated in a curved shape in the proximal portion thereof, the catheter being adapted to fit over the outside ofa substantially straight needle and be straightened out by the needle when the needle is pushed through the catheter so that it penetrates into the trachea to have the catheter therein, the curved material causing the catheter to resume the original curved shape as a result of the plastic memory of the material within the trachea after the needle is withdrawn therefrom.
The present invention relates to an emergency trachectomy instrument and ventilating apparatus for restoring breathing to nonbreathing patients due to tracheal obstructions and pulmonary complications, which is also useful for aiding ventilation for bronchoscopy and during general anestheia in which the soft plastic catheter may be either curved or straight but which must be perforated at the distal end to divert part or all of the ventilated stream passing through the catheter. In this manner, any improper positioning of the axial outlet of the catheter will permit release of the oxygen or air into the tracheal lumen. Only in this manner will there be overcome air embolisms which occur in the use of the precurved catheter of my parent application. It has been surprisingly discovered that only if the normal axial flow ofthe oxygenated gas is diverted through distal openings of the catheter can the accidents of improper positioning be avoided so that serious and automatic self-injury is not done to the patient or animal treated with the emergency resuscitating apparatus of the present invention. Indeed, the need for curving can be dispensed with and a straight catheter, having great advantages for proper placement, has been developed under the present invention which is uniquely adapted for pediatric resuscitation.
In another embodiment of the invention, an elastic balloon or cuff is provided, inflatable by the same oxygenated gas stream, which is cyclically introduced into the trachea for resuscitation, the elastic balloon being operative under diverted air pressure created within the catheter structure by providing a wedge in the wall of the catheter along the catheter axis. This wedge diverts high pressure oxygenated gas in the inflation cycle and blows up the balloon to minimize retrograde air leak. In the removal of the balloon from the trachea, the elasticity of the balloon is such as to cause the balloon to collapse and rest against the catheter in the absence of high pressure air; in effect, the elasticity permits the balloon to act as a cuff inflatable under the inflation cycle and being contracted and displaced toward the catheter wall when the air is cut off (easy removal). The cuff structure is unique and simple and distinguishes over the prior art cuff structures by being operative solely under the action of the ventilating oxygenated gas directed through the axis of the catheter.
As a result of the combination of the cuff and the distal openings diverting at least ten to twenty-five percent of the air under normal axial placement in the proper position as shown in the parent case, Ser. .No. 59,206, a new and unexpected function of the transversely displaced air stream outflowing from the distal openings results which positions the soft yet flexible catheter in an assured operatively safe location within the trachea. The inventor discovered in working with animals that air embolisms caused death when difficult resuscitations were attempted in the presence of secretions in the back of the mouth area. Despite the fact that the secretions were blown out and that successful insertions were very easily accomplished within a few seconds, the failures were due to axial air flow of pressures of 30 to psi to create microscopic bubbles in the capillaries along the tracheal linings constituting the cause of death. These embolisms in the capillaries presented a mystery over a long period of time which were only solved by autopsy. It is the object of this invention to provide a percutaneous transtracheal catheter ventilator which can be inserted by a physician, nurse, or technician in less than ten seconds, simply plugged into the wall oxygen outlet or or oxygen tank, operated manually or automatically as desired, and have the safety and ease of insertion that will not commit the patient to a permanent type tracheostomy or the danger which tracheostomy generally entails in an emergency.
Prior efforts to introduce cuff or balloon catheters have not been practical since the emergency insertion requirement cannot be achieved and a further object of the invention is, accordingly, to provide a cuff apparatus which is operative solely under the influence of the axial gas flow within the catheter to prevent retrograde air leak during the inflation cycle.
The closest type of cuff structure which the inventor has found in the prior art is that shown in Schossow, U. S. Pat. No. 3,087,493 relating to a bulky endotracheal tube with a cuff structure but this cuff structure requires a separate pressurized gas means to inflate the cuff and the structure is so complex in respect to the patient management and maintenance of free airway passages that it requires a generalanesthetic in order to introduce the catheter or tube into the respiratory passages of the patient. Obviously, the Schossow tube is not suitable for emergency insertion by semi-skilled or paramedical personnel who have no facilities in ambulances or emergency units to perform major surgery.
Other types of tubes in the prior art, curved as well as straight, have been provided; for example, Williams, U. S. Pat. No. 340,190, or Gale, U. S. Pat. No. 3,800, patented Oct. 16, 1844, but these tubes are in no way suitable for introduction into the throat for life-saving ventilation under emergency conditions. It is only the present catheter of soft plastic material with distal openings which must withstand high ventilating pressures yet be simply positioned by semi-skilled personnel to save the lives of the patients within the first ten seconds and can be employed with the positive assurance that the distal openings will compensate for any variation in performance by the nurse, technician or doctor.
Still other surgical type catheters are known; for example, Petersen, U. S. Pat. No. 3,490,457, shows a syringe type catheter which, because of its structure, cannot provide the self-orientation characteristics of the present self oriented catheter. The passage of ID to 25 percent of the air in the transverse crush as a result of axial in-flo provides a self-orientation responsive only to the oxygenated gas which comes into the respiratory system of the patient through a single channel. This simplicity permits entry through the mouth or nose or throat or through the crico-thyroid membrane.
Accordingly, a further object of the invention is to provide a straight perforated catheter which is selfadjusting under the influence of incoming high pressure oxygenated gas through the longitudinal axis of the catheter when it is placed within the trachea of the patient, the distal openings in the catheter providing a minimum of 10 and up to 25 percent of transverse air leakage to the catheter within the trachea, thus preventing air embolisms.
Other and further objects and advantages will be apparent from the following description accompanying drawings, wherein:
FIG. 1 is a cross-sectional view of the distally perforated catheter in precurved shape;
FIG. 2 is a perspective view of the perforated catheter of FIG. 1 in its free state;
FIG. 3 illustrates the position of the perforated catheter of FIG. 1 in relation to the trachea;
FIG. 4 illustrates the position of the free perforated catheter of FIG. 1 in the trachea, the catheter having assumed its normal curved shape;
FIG. 5 is a showing of the fitting of the adapter means of my co-pending application titled Ventilating Apparatus Embodying Selective Volume or Pressure Operation wherein the plunger unit and adapter are combined with a catheter of the invention, illustrated in only the form of that in FIG. 1;
FIG. 6 is a cross-sectional view along line 6 6 of FIG. 5;
FIG. 7 is a view of the catheter of FIG. 5 to show the condition of the cuff in collapsed condition in the absence of pressurized air through the main axis of the catheter.
FIG. 8 is a view of the precurved catheter of FIG. 7 with the balloon or cuff inflated.
FIG. 9 is a cross-sectional view along Line 10 10 of FIG. 9 showing gas circulation through the wedge opening for inflating the balloon, the inner arrows indicating in diagrammatic form the free circulation between inner and outer lumens;
FlG. 10A and FIG. 10B illustrate perspective views of a straight catheter having a premolded balloon adapted for pediatric ventilation wherein a split ring trochar fitted with handles aids in positioning the catheter through the mouth of an infant or other patient and which inflates by partial division of the pressurized gas after the trochar is removed;
FIG. 11 is a sectional view of the catheter of FIGS. 10A and 10B showing the triple lumen structure;
FlG. 12A and FIG. 128 show the use of the split ring adapter in the construction of a modified precurved catheter having multiple feeding inlets for a variety of resuseitating procedures;
FIG. 13 shows a triple lumen adapter means (third lumen is a cuff) which is inflated in the cuff position and is associated with a lower portion of the precurved catheter of FIGS. 12A and 128 to show the partial completion stage;
FIG. 14 is a cross-sectional view of the triple lumen patient adaptor means of FIG. 13 at the level of the proximal partial obstructing tracheal balloon and wedge gas inlet site showing the transient inflation of the balloon and which illustrates cuff inflation by diverting part of the gas stream;
FIG. 15 shows one of the catheters of the longer double lumen pair serving as the minor source of pressurized gas in a conducting and self-cleansing lumen structure with its corresponding distal-perforated catheter serving as the pressure conducting catheter, and the proximal partial obstructing tracheal balloon only transiently inflated;
FIG. 16 shows the orally insertable distal-perforated straight catheter of the double lumen distal pair serving as the minor pressurized gas conducting and selfcleansing lumen (similar to FIG. 15) with its corresponding distal member serving as the pressure conducting catheter, and shows the proximal partial obstructing tracheal balloon transiently inflated;
FIG. 17 shows the proximal portion of the single lumen orally inserted patient adaptor means with its multi-level anchoring and compression withstanding ridges, and distal gas jet diffusing member plug crosssection of the proximal portion at level of a compression withstanding and anchoring ridge; and
FIG. 18 shows a thin distal pressure-sensing trans ducer in conjunction with the single lumen patient adaptor means, passing through said patient adaptor means and relaying distal intrapulmonic pressure values to its attached controlling ventilating means, whereby feedback, monitoring, control and recording functions are provided.
To facilitate study of the details shown in the foregoing FIGS, reference is made to the co-pending application filed on even date herein (Aug. 3, 1972) which bears certain common figures with the present case (which omits the nebulizer hookup). The reference numerals are similar and the following description from the co-pending application (filed same day) identifies the catheter structures as single and triple lumen catheters, the double lumen referring to the cuff or balloon. The reference numerals selected herein correspond to those of my copending application, Ser. No. 59,206, which is, at the time of execution of this application now in issue and therefore need not be repeated. The reference numerals are those of the co-pending case which will issue shortly.
The operation of the cathers of the present inventions are completely described in my original paper in the Journal of Trauma for January 1972 entitled Emergency Percutaneous Trans-tracheal Catheter and Ventilator.
The operation is summarized in terms of connecting, integral, single and triple lumen catheters.
CONNECTING, INTEGRAL, SINGLE AND TRIPLE LUMEN CATHETERS The ventilating machine (FIGS. 1-4) forces air or oxygen under high pressure (30100 pounds per square inch) through the catheter into the trachea, and even in the presence of the air leak through the mouth (retrograde flow), pressures of 15 to 35 cm. water are easily attainable (same pressure reached as present machines that use a closed system large tube and balloon cuff).
When the gas flow is discontinued, the patient exhales out of the normal oral route. In complete upper airway expiratory obstruction (above the catheter entrance site) suction is cyclically provided to aid exhalation. Using the single lumen catheter system the patients ventilation is controlled by the ventilating machine, but with the triple lumen catheter and ventilating system, the patient can control the machine and therefore the assist ventilating mode plus measurement of intrapulmonic pressure as well as gas analysis is made possible. The larger proximal lumen conducts the ventilating gas while one of the other distal lumens alternately transmits the intra-tracheal (intra-pulmonic) pressure level to the sensing device, and conducts the minor high pressurized gas self cleansing flow.
The single lumen patient adaptor means (FIGS. 6-10, 17, 19) has a pressurized gas conduit 251 which conducts the pressurized gas from its connecting hub 256 to its terminal open lumen 264 plus side holes 261. The thick walled inner hollow needle-trochar member 252 traverses the entire length of the pressurized gas conducting conduit 251 and extends beyond each end for a short distance (FIG. 6). The distal portion 293 has a sharp leveled cutting edge plus a small opening 299 which transmits air, when properly located within the trachea, to the proximal syringe 258. The syringe connecting member 259 fits snugly into the needle-trochar hub 257 and is an air tight connection. Air is transmitted through lumen 297 of the needle-trochar unit into the syringe 258, when in proper position by pulling on plunger unit 260. Following proper position, the catheter 251, is advanced into the trachea 265, holding the needle-trochar unit stable. When the catheter flange 253 and hub portion 255 reach the skin the needletrochar is removed. The catheter assumes a pre-molded 90 curve whose radius is one half the respective tracheal diameter, this curve being shown as curve 294 in FIG. 7 and which stabilizes it aimed down the trachea, without pressure on the tracheal wall. Hub 256 has screw locking prong 291 which can screw lock onto the gas conduit from the ventilating machine, as well as receiving its receptable within said hub.
The side holes 261 provided along the catheter act as a safety valve when the end lumen 264 may be located at a poor angle in relation to the tracheal lumen. They also aid in lateral transmission of the pressurized gas (up to 75 percent) when the terminal porous gas diffusing member 287 is attached (FIG. 17). In this instance, insertion is within the breakaway needle trochar when placed through the skin, or passed without a trochar via the oral route. The porous gas diffusing member 287 decreases the constant aimed site of the single gas jet and diminished any local effect possible from it. The catheter has a skin anchoring flange 253 (FIGS. 6, 7, 8) which is firmly fixed and solid with the distal hub portion 255 and a solid part of catheter 251. This flange has holes 254 through which it may be sutured to the skin at the neck entrance site or tapes or strings attached to hold it is place on the neck.
Snugly placed around the catheter 251 and firmly integral to it is a balloon 263. As the pressurized gas flows down the catheter 251 it meets a small degree of resistance at the premolded, resiliant, inner projecting catheter gas inlet wedge 262 (FIGS. 6, 8, 9, 10). This wedge is held flat in position by the inner needle-trochar unit but when the needle-trochar unit is removed, the gas inlet wedge partially springs into the lumen and by its presence channels some gas through its lumen and distends the balloon 263. This proximal tracheal partial obstructing balloon effectively decreases the tracheal opening and therefore decreases the retrograde leak only while the pressurized gas is flowing in catheter 251. This allows the lungs to be distended to the same final pressure and volume by a lesser amount of the pressurized gas.
The single lumen catheter can be passed via the nosopharyngeal or oro-pharyngeal route between the vocal cords and positioned into the trachea. This method is especially desirous in infants and small children. The catheter 251 then does not have pre-molded curve 294 but is straight and has muIti-level anchoring and compression withdranding ridges 285. These allow the catheter to be sutured or taped or tied in proper position through holes 286 at the correct level for each individual patient and prevents catheter 251 from bending to the degree where it will narrow its lumen and also prevents the teeth and gums from compressing the lumen.
The triple lumen patient adaptor means (FIGS. 11-16, 18) utilizes the larger proximal lumen as the main gas conducting catheter while it allows one distal lumen to act as the pressurized gas conducting self cleansing conduit while at the same time the other distal lumen transmits the tracheal (intra-pulmonic) pressure to the ventilating machine. As in the single lumen variety there is a similar skin anchoring flange 253 but with three hubs 301, 302, 303. Each catheter 304, 305, 306, has its own respective lumen 267, 268, 269; respective side holes 270, 271, 272 but only the larger main proximal catheter has a gas wedge inlet 273 to its proximal partial obstructing tracheal balloon 274. As shown in FIGS. 14, 15, 16, 18 the main proximal lumen always acts as the main pressurized gas conducting conduit, while one distal lumen is cleansed by the minor gas flow and at the same time, the other distal catheter transmits the intratracheal pressure back to the ventilating machine. With the next respiration cycle the other distal catheter conducts the gas cleansing flow while the former distal catherer now transmits the tracheal pressure.
The triple lumen patient adaptor means is inserted through a novel breakaway 4 inch long trochar (FIGS. 11, 13). The trochar unit consists of a thick walled sharp straight inner needle 275, the same diameter as the triple lumen patient adaptor means used, with an attached syringe 276. Snugly fitting around this sharp hollow needle is a shorter blunt flat-ended trochar 277 which allows the triple lumen patient adaptor means to pass through it. This blunt trochar has a split shaft 278 and split hub 279 with attached separate wing handles 280, 281. When assembled, the sharp inner needle extends 2 mm. longer than the blunt flat-ended hollow trochar. This is thrust through the skin, then through the crico-thyroid membrane (or crico-tracheal membrane) into the trachea. When air is aspirated back, the intra-luminal position is assured and the blunt trochar is advanced 4 mm further, and held in place while the inner longer needle unit is removed. Next the triple lumen patient adaptor is passed through the blunt splitsided trochar down into the trachea. This is passed until the skin anchoring flange 253 reaches the separate wing handles 280, 281 of the trochar unit. At that moment the blunt split-sided trochar is pulled out of the trachea until its distal blunt end leaves the skin surface,
leaving most of the triple lumen patient adaptor means within the trachea. The separate wing handles are grapsed and bent toward each other, splitting open the whole blunt trochar member 277 (FIG. 13) by the separation of the split shaft edges, and causing it to fall away from the triple lumen patient adaptor means which remains within he trachea. This triple lumen unit has a blunt sliding stiffening rod 282 placed within the larger proximal lumen which now aids the triple lumen patient adaptor means placement further within the trachea by pushing it until the anchoring flange 253 is flush with the skin surface. Then this inner stiffening rod 282 is removed, the pre-molded self-returning 90 curve 294 is assumed and the entire triple lumen patient adaptor means connected to its control ventilating and pressure regulating means. This advancement is also aided by the extra stiffness incorporated in the proximal V2 cm. of the catheter.
The triple lumen separating wall 283 (septum) divides the major gas inflating proximal lumen from the pressure sensing lumens. The wall 284 (septum) separates each of the narrower alternate pressure sensing, self-cleansing lumens.
The triple lumen patient adaptor means may be passed via the oral route between the vocal cords and it also has the anchoring 286 and compression with standing ridges 285 as well as the porous gas jet diffusing member 287 on the main inflating lumen.
The triple lumen patient adaptor means could be constructed of three parallel tubular lumens (one larger proximal and 2 narrower distal lumens) when passed via the oral route.
The single lumen patient adaptor means may have a thin, narrow pressure sensing transducer 288 placed distal to it and have the pressure sensing information conductor 289 passed through it FIG. 18) or through a separate route to the controlling ventilating means with which it works to measure the trachea (intrapulmonic) pressures and utilize this pressure data to regulate, control and monitor the ventilation of the patient.
The length between the wider, larger proximal lumen of the triple lumen patient adaptor means and the distal, narrower double lumen pressure sensing, selfcleansing means is from 1.5 to l cm. depending upon the size of the patient it is utilized in. The larger proximal lumen diameter is from 0.5 to 2 mm. depending upon the size of the patient. The ratio of the single lumen patient adaptor means (and main lumen of the triple lumen patient adaptor means) to the tracheal diameter is from lz6 to 1:50 depenthng upon nastiest the patient, patient disease, patient age and lung compliance as well as whether or not the proximal partial tracheal obstruction balloon is utilized. The patient adaptor means construction is such as to withstand pressures up to 100 psi.
These patient adaptor means can remain in place and be utilized intermittently with the ventilator to give intermittent positive pressure breathing treatments, in-
stillation and nebulization of mucolytic agents and antibiotics as well as measurements of expired air content of oxygen and carbon dioxide.
What is claimed is:
l. in combination, a distally perforated tracheal catheter having an unobstructed wedge opening in the middle portion thereof, and a flat cuff in the form of an elastic balloon which is tightly sealed at its ends above and below said wedge opening, means associated with said opening to divert gas from said catheter into said balloon so that the cyclic passage of high pressure oxygen-containing gas through said catheter inflates the elastic balloon to press against the walls of the trachea with the catheter and cuff in place and deflates to collapse said balloon in flat condition to rest the cuff against the catheter when the high pressure oxygencontaining gas is cut off, said cuff collapsing due to elastic restoring forces of the material of said balloon, said catheter having side openings of such size and number adjacent the distal opening such that under axial flow of high pressure oxygen-containing gas through said catheter diverts from 10 to 25 percent of the gas flow out of said holes and when distal end is plugged permits all of said high pressure gas to be diverted through said side openings, whereby forced ventilation by means of cyclically flowing said high pressure gas through the catheter is aided in the event the end of the catheter is plugged and retrograde air leak during the inflation cycle is minimized by inflation of said balloon during the inflation cycle.
2. The combination as claimed in claim 1 wherein said catheter is precurved.
3. The combination as claimed in claim 1 wherein the distal portion of said catheter is formed with an axial wall to provide a double lumen, the inlet of the double lumen being located below the wedge and cuff seal and the outlet of said catheter having two lumens.
4. The combination as claimed in claim 1 wherein the cuff at its major diameter is surrounded by a split-ring trochar, and grasping means on said trochar to facilitate removal of the trochar from its position surrounding the catheter.
5. The combination as claimed in claim 4 including pressure sensing means at each lumen wherein one of the said two end lumens is used to alternately sense pressure while the other, on an alternate basis, is cleansed by pressureized ventilating gas, and vice versa.
6. The combination as claimed in claim 1 wherein said catheter is straight.
7. The combination as claimed in claim 6 wherein said catheter include anchoring ridge means which resists biting forces when inserted through the patients mouth.
8. The combination as claimed in claim 7 wherein said catheter includes a diffusing means over the axial outlet.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3800 *||Oct 16, 1844||Instrument for uterine injections|
|US1740174 *||Sep 10, 1928||Dec 17, 1929||Ramsey Hevern Earl||Embalmer's trocar|
|US2976865 *||Oct 21, 1958||Mar 28, 1961||Edwin Shipley Richard||Cylindrical strain gauge|
|US3182663 *||Mar 8, 1961||May 11, 1965||Louis Abelson||Cricothyrotomy needle|
|US3398747 *||Jan 6, 1966||Aug 27, 1968||Victor H. Raimo||Airway|
|US3459188 *||Jul 26, 1965||Aug 5, 1969||American Hospital Supply Corp||Paracentesis stylet catheter|
|US3459189 *||Jul 28, 1965||Aug 5, 1969||Brunswick Corp||Trocar catheter|
|US3653388 *||Dec 4, 1969||Apr 4, 1972||Battelle Development Corp||Catheter insertion trocar|
|US3680562 *||Apr 26, 1971||Aug 1, 1972||Becton Dickinson Co||Surgical drainage apparatus for bladder|
|US3688773 *||Apr 16, 1970||Sep 5, 1972||Weiss Sol||Device for performing a tracheostomy and other surgical procedures|
|US3707151 *||Feb 16, 1971||Dec 26, 1972||Richard Robert Jackson||Self-inflating endotracheal tube|
|SU229749A1 *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3916903 *||Jul 20, 1973||Nov 4, 1975||Pozzi Reta M H||Cricothyroid puncture apparatus|
|US3964488 *||Nov 13, 1974||Jun 22, 1976||Wallace H. Ring||Tracheal tube|
|US3976065 *||Mar 10, 1975||Aug 24, 1976||Gerald Durkan||Digital fluidic ventilator|
|US4020849 *||Dec 1, 1975||May 3, 1977||Jackson Richard R||Cuff inflation for tracheal tubes|
|US4278081 *||Feb 21, 1978||Jul 14, 1981||Jones James W||Tracheal tube|
|US4290428 *||Aug 16, 1979||Sep 22, 1981||Durand Alain J M||Catheter with bulb|
|US4320754 *||Dec 21, 1979||Mar 23, 1982||Watson Robert L||Controllable partial rebreathing anesthesia circuit and respiratory assist device|
|US4327720 *||Jan 22, 1979||May 4, 1982||Bronson Paul A||Esophageal-endotracheal airway|
|US4375811 *||Feb 24, 1981||Mar 8, 1983||Future Teck||Surgical ventilating apparatus|
|US4488548 *||Dec 22, 1982||Dec 18, 1984||Sherwood Medical Company||Endotracheal tube assembly|
|US4595005 *||Feb 8, 1984||Jun 17, 1986||Jinotti Walter J||Dual-purpose catheter|
|US4607635 *||Sep 27, 1984||Aug 26, 1986||Heyden Eugene L||Apparatus for intubation|
|US4633864 *||Oct 22, 1984||Jan 6, 1987||Dacomed Corporation||Speaking endotracheal tube|
|US4637389 *||Apr 8, 1985||Jan 20, 1987||Heyden Eugene L||Tubular device for intubation|
|US4684369 *||Aug 19, 1985||Aug 4, 1987||Wildemeersch Dirk A A||Instrument for suprapubic drainage of the bladder, inserted through the urethra|
|US4771777 *||Jan 6, 1987||Sep 20, 1988||Advanced Cardiovascular Systems, Inc.||Perfusion type balloon dilatation catheter, apparatus and method|
|US4894057 *||Jun 19, 1987||Jan 16, 1990||Howes Randolph M||Flow enhanced multi-lumen venous catheter device|
|US4978334 *||Sep 8, 1988||Dec 18, 1990||Toye Frederic J||Apparatus and method for providing passage into body viscus|
|US5058580 *||May 11, 1988||Oct 22, 1991||Hazard Patrick B||Percutaneous tracheostomy tube|
|US5090408 *||Sep 28, 1987||Feb 25, 1992||Bryan T. Spofford||Transtracheal catheter system and method|
|US5101820 *||Nov 2, 1989||Apr 7, 1992||Christopher Kent L||Apparatus for high continuous flow augmentation of ventilation and method therefor|
|US5146916 *||Jan 3, 1991||Sep 15, 1992||Catalani Angelo S||Endotracheal tube incorporating a drug-irrigation device|
|US5181509 *||Oct 29, 1991||Jan 26, 1993||Spofford Bryan T||Transtracheal catheter system|
|US5186168 *||Jun 6, 1990||Feb 16, 1993||Spofford Bryan T||Transtracheal catheter system and method|
|US5193533 *||Jul 9, 1990||Mar 16, 1993||Brigham And Women's Hospital||High-pressure jet ventilation catheter|
|US5255675 *||Oct 31, 1990||Oct 26, 1993||The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services||Device for intratracheal ventilation and intratracheal pulmonary ventilation|
|US5279288 *||Apr 3, 1992||Jan 18, 1994||Christopher Kent L||Apparatus for high continuous flow augmentation of ventilation and method therefor|
|US5334157 *||Sep 9, 1993||Aug 2, 1994||Gesco International, Inc.||Catheter introducer|
|US5546935 *||Mar 9, 1993||Aug 20, 1996||Medamicus, Inc.||Endotracheal tube mounted pressure transducer|
|US5605149 *||Mar 17, 1995||Feb 25, 1997||Board Of Regents, The University Of Texas System||Method and apparatus for directing air flow within an intubated patient|
|US5618272 *||May 6, 1996||Apr 8, 1997||Kabushiki-Kaisha Median||Intravenous catheter set|
|US5653230 *||Jan 19, 1996||Aug 5, 1997||Cook Incorporated||Percutaneous balloon dilational tracheostomy tube|
|US5669380 *||Apr 26, 1996||Sep 23, 1997||New England Medical Center Hospitals, Inc.||Laryngeal bypass|
|US5692497 *||May 16, 1996||Dec 2, 1997||Children's Medical Center Corporation||Microprocessor-controlled ventilator system and methods|
|US5694922 *||Aug 19, 1994||Dec 9, 1997||Ballard Medical Products||Swivel tube connections with hermetic seals|
|US5765557 *||Mar 15, 1996||Jun 16, 1998||Board Of Regents, The University Of Texas System||Method and apparatus for directing air flow within an intubated patient|
|US5803078 *||May 26, 1995||Sep 8, 1998||Brauner; Mark E.||Methods and apparatus for intrapulmonary therapy and drug administration|
|US5951518 *||Oct 31, 1997||Sep 14, 1999||Teleflex, Incorporated||Introducing device with flared sheath end|
|US5954050 *||Oct 20, 1997||Sep 21, 1999||Christopher; Kent L.||System for monitoring and treating sleep disorders using a transtracheal catheter|
|US6102042 *||Dec 2, 1999||Aug 15, 2000||Respironics, Inc.||Insufflation system, attachment and method|
|US6113579 *||Mar 4, 1998||Sep 5, 2000||Scimed Life Systems, Inc.||Catheter tip designs and methods for improved stent crossing|
|US6155252 *||Jun 15, 1998||Dec 5, 2000||Board Of Regents, The University Of Texas System||Method and apparatus for directing air flow within an intubated patient|
|US6280423||Feb 23, 1999||Aug 28, 2001||Scimed Life Systems, Inc.||High flow rate dialysis catheters and related methods|
|US6332892||Mar 2, 1999||Dec 25, 2001||Scimed Life Systems, Inc.||Medical device with one or more helical coils|
|US6439228||Jun 16, 2000||Aug 27, 2002||Respironics, Inc.||Insufflation system, attachment and method|
|US6457472||Dec 11, 1997||Oct 1, 2002||The Johns Hopkins University||Method and apparatus for providing ventilatory support to a patient|
|US6494203||Nov 12, 1999||Dec 17, 2002||Ballard Medical Products||Medical aspirating/ventilating closed system improvements and methods|
|US6517515||Jan 20, 1999||Feb 11, 2003||Scimed Life Systems, Inc.||Catheter having variable size guide wire lumen|
|US6526976||Mar 10, 1999||Mar 4, 2003||Trudell Medical Limited||Nebulizing catheter system and method of use and manufacture|
|US6595966||May 16, 2001||Jul 22, 2003||Scimed Life Systems, Inc.||High flow rate dialysis catheters and related methods|
|US6620202||Oct 16, 2001||Sep 16, 2003||Scimed Life Systems, Inc.||Medical stent with variable coil and related methods|
|US6634360 *||Sep 2, 1999||Oct 21, 2003||Flodin Bjoern||Device for supplying inhalation gas to and removing exhalation gas from a patient|
|US6656146||Apr 27, 1999||Dec 2, 2003||Scimed Life Systems, Inc.||Medical device with tail(s)|
|US6719804||Oct 24, 2001||Apr 13, 2004||Scimed Life Systems, Inc.||Medical stent and related methods|
|US6722362||Apr 30, 2002||Apr 20, 2004||Respironics, Inc.||Insufflation system, attachment and method|
|US6729334||Mar 10, 1999||May 4, 2004||Trudell Medical Limited||Nebulizing catheter system and methods of use and manufacture|
|US6849061||Oct 21, 2002||Feb 1, 2005||Robert B. Wagner||Method and apparatus for pleural drainage|
|US6849069||Nov 6, 1996||Feb 1, 2005||Boston Scientitfic Corporation||Medical device with tail(s) for assisting flow of urine|
|US6945950||Sep 12, 2003||Sep 20, 2005||Boston Scientific Scimed, Inc.||Ureteral stent with small bladder tail(s)|
|US6991614||Apr 4, 2003||Jan 31, 2006||Boston Scientific Scimed, Inc.||Ureteral stent for improved patient comfort|
|US7037345||Jun 27, 2003||May 2, 2006||Boston Scientific Scimed, Inc.||Medical stent with variable coil and related methods|
|US7195017||Feb 11, 2005||Mar 27, 2007||Cordis Corporation||Collateral ventilation bypass trap system|
|US7252086||May 24, 2004||Aug 7, 2007||Cordis Corporation||Lung reduction system|
|US7291180||Jan 27, 2004||Nov 6, 2007||Boston Scientific Scimed, Inc.||Medical stent and related methods|
|US7377278||May 24, 2004||May 27, 2008||Portaero, Inc.||Intra-thoracic collateral ventilation bypass system and method|
|US7398782||Nov 19, 2004||Jul 15, 2008||Portaero, Inc.||Method for pulmonary drug delivery|
|US7406963||Jan 17, 2006||Aug 5, 2008||Portaero, Inc.||Variable resistance pulmonary ventilation bypass valve and method|
|US7410602||Apr 22, 2003||Aug 12, 2008||Namic/Va, Inc.||High flow rate dialysis catheters and related methods|
|US7426929||May 12, 2004||Sep 23, 2008||Portaero, Inc.||Intra/extra-thoracic collateral ventilation bypass system and method|
|US7431031||Apr 19, 2004||Oct 7, 2008||Ric Investments, Llc||Insufflation system and method|
|US7469700||Jun 25, 2003||Dec 30, 2008||Trudell Medical Limited||Nebulizing catheter system for delivering an aerosol to a patient|
|US7472705||Jun 25, 2003||Jan 6, 2009||Trudell Medical Limited||Methods of forming a nebulizing catheter|
|US7503328 *||Mar 15, 2005||Mar 17, 2009||The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services||Mucus slurping endotracheal tube|
|US7533667||May 20, 2004||May 19, 2009||Portaero, Inc.||Methods and devices to assist pulmonary decompression|
|US7678154||Jan 9, 2006||Mar 16, 2010||Boston Scientific Scimed, Inc.||Ureteral stent for improved patient comfort|
|US7682332||Jun 30, 2004||Mar 23, 2010||Portaero, Inc.||Methods to accelerate wound healing in thoracic anastomosis applications|
|US7686013||Feb 12, 2008||Mar 30, 2010||Portaero, Inc.||Variable resistance pulmonary ventilation bypass valve|
|US7726305||Feb 12, 2008||Jun 1, 2010||Portaero, Inc.||Variable resistance pulmonary ventilation bypass valve|
|US7753052||Feb 6, 2008||Jul 13, 2010||Portaero, Inc.||Intra-thoracic collateral ventilation bypass system|
|US7789083||Jan 31, 2008||Sep 7, 2010||Portaero, Inc.||Intra/extra thoracic system for ameliorating a symptom of chronic obstructive pulmonary disease|
|US7811274||Apr 27, 2004||Oct 12, 2010||Portaero, Inc.||Method for treating chronic obstructive pulmonary disease|
|US7824366||Dec 10, 2004||Nov 2, 2010||Portaero, Inc.||Collateral ventilation device with chest tube/evacuation features and method|
|US7828789||Apr 7, 2008||Nov 9, 2010||Portaero, Inc.||Device and method for creating a localized pleurodesis and treating a lung through the localized pleurodesis|
|US7857784 *||Aug 14, 2003||Dec 28, 2010||Karl Storz Gmbh & Co. Kg||Medical instrument for suction and irrigation, and method for its production|
|US7896008||Aug 6, 2007||Mar 1, 2011||Portaero, Inc.||Lung reduction system|
|US7909803||Feb 18, 2009||Mar 22, 2011||Portaero, Inc.||Enhanced pneumostoma management device and methods for treatment of chronic obstructive pulmonary disease|
|US7927324||Feb 18, 2009||Apr 19, 2011||Portaero, Inc.||Aspirator and method for pneumostoma management|
|US7931641||Feb 21, 2008||Apr 26, 2011||Portaero, Inc.||Visceral pleura ring connector|
|US7951206 *||Nov 5, 2007||May 31, 2011||Boston Scientific Scimed, Inc.||Medical stent|
|US8021320||Feb 18, 2009||Sep 20, 2011||Portaero, Inc.||Self-sealing device and method for delivery of a therapeutic agent through a pneumostoma|
|US8029492||Apr 7, 2008||Oct 4, 2011||Portaero, Inc.||Method for treating chronic obstructive pulmonary disease|
|US8062315 *||Feb 12, 2008||Nov 22, 2011||Portaero, Inc.||Variable parietal/visceral pleural coupling|
|US8104474||Aug 23, 2005||Jan 31, 2012||Portaero, Inc.||Collateral ventilation bypass system with retention features|
|US8163034||Feb 21, 2008||Apr 24, 2012||Portaero, Inc.||Methods and devices to create a chemically and/or mechanically localized pleurodesis|
|US8220460||Nov 19, 2004||Jul 17, 2012||Portaero, Inc.||Evacuation device and method for creating a localized pleurodesis|
|US8231581||Jan 25, 2011||Jul 31, 2012||Portaero, Inc.||Enhanced pneumostoma management device and methods for treatment of chronic obstructive pulmonary disease|
|US8252003||Feb 18, 2009||Aug 28, 2012||Portaero, Inc.||Surgical instruments for creating a pneumostoma and treating chronic obstructive pulmonary disease|
|US8323230||Jan 20, 2010||Dec 4, 2012||Portaero, Inc.||Methods and devices to accelerate wound healing in thoracic anastomosis applications|
|US8336540||Feb 12, 2009||Dec 25, 2012||Portaero, Inc.||Pneumostoma management device and method for treatment of chronic obstructive pulmonary disease|
|US8347880||Feb 18, 2009||Jan 8, 2013||Potaero, Inc.||Pneumostoma management system with secretion management features for treatment of chronic obstructive pulmonary disease|
|US8347881||Jan 8, 2010||Jan 8, 2013||Portaero, Inc.||Pneumostoma management device with integrated patency sensor and method|
|US8348906||Feb 18, 2009||Jan 8, 2013||Portaero, Inc.||Aspirator for pneumostoma management|
|US8365722||Feb 18, 2009||Feb 5, 2013||Portaero, Inc.||Multi-layer pneumostoma management system and methods for treatment of chronic obstructive pulmonary disease|
|US8430094||Feb 18, 2009||Apr 30, 2013||Portaero, Inc.||Flexible pneumostoma management system and methods for treatment of chronic obstructive pulmonary disease|
|US8453637||Feb 18, 2009||Jun 4, 2013||Portaero, Inc.||Pneumostoma management system for treatment of chronic obstructive pulmonary disease|
|US8453638||Feb 18, 2009||Jun 4, 2013||Portaero, Inc.||One-piece pneumostoma management system and methods for treatment of chronic obstructive pulmonary disease|
|US8464708||Feb 18, 2009||Jun 18, 2013||Portaero, Inc.||Pneumostoma management system having a cosmetic and/or protective cover|
|US8474449||Feb 18, 2009||Jul 2, 2013||Portaero, Inc.||Variable length pneumostoma management system for treatment of chronic obstructive pulmonary disease|
|US8475389||Jun 8, 2010||Jul 2, 2013||Portaero, Inc.||Methods and devices for assessment of pneumostoma function|
|US8491602||Feb 18, 2009||Jul 23, 2013||Portaero, Inc.||Single-phase surgical procedure for creating a pneumostoma to treat chronic obstructive pulmonary disease|
|US8496631 *||Jul 5, 2005||Jul 30, 2013||David C. Brown||Apparatus and method for increasing flow resistance around a probe|
|US8506577||Jul 6, 2012||Aug 13, 2013||Portaero, Inc.||Two-phase surgical procedure for creating a pneumostoma to treat chronic obstructive pulmonary disease|
|US8518053||Feb 11, 2010||Aug 27, 2013||Portaero, Inc.||Surgical instruments for creating a pneumostoma and treating chronic obstructive pulmonary disease|
|US8715705||Jul 29, 2009||May 6, 2014||Covidien Lp||Multilayer medical devices having an encapsulated edge and methods thereof|
|US8845752||Jul 26, 2012||Sep 30, 2014||Boston Scientific Scimed, Inc.||Ureteral stent for improved patient comfort|
|US8925545 *||Sep 26, 2008||Jan 6, 2015||Breathe Technologies, Inc.||Methods and devices for treating sleep apnea|
|US9067043 *||May 28, 2013||Jun 30, 2015||Smh Device Corp.||Tunneled catheter with hemostasis mechanism|
|US9138567 *||Mar 11, 2013||Sep 22, 2015||Covidien Lp||Controlling catheter flow|
|US9162033 *||Jun 27, 2005||Oct 20, 2015||Cook Medical Technologies Llc||Dilator for performing a percutaneous medical procedure|
|US9308351||Apr 2, 2014||Apr 12, 2016||Smh Device Corp.||Tunneled catheter with hemostasis mechanism|
|US9463300||Sep 8, 2015||Oct 11, 2016||Covidien Lp||Controlling catheter flow|
|US9532784 *||Jul 29, 2011||Jan 3, 2017||Vascular Insights Llc||Sclerotherapy catheter with lumen having wire rotated by motor and simultaneous withdrawal from vein|
|US9585667 *||Jul 29, 2011||Mar 7, 2017||Vascular Insights Llc||Sclerotherapy catheter with lumen having wire rotated by motor and simultaneous withdrawal from vein|
|US9687273||Sep 9, 2014||Jun 27, 2017||Gimmi Gmbh||Endoscopic surgical instruments and related methods|
|US20030204179 *||Apr 22, 2003||Oct 30, 2003||Davey Christopher T.||High flow rate dialysis catheters and related methods|
|US20040000314 *||Mar 20, 2003||Jan 1, 2004||Angel Luis F.||Airway assembly|
|US20040024356 *||Jul 3, 2003||Feb 5, 2004||Don Tanaka||Long term oxygen therapy system|
|US20040059279 *||Apr 4, 2003||Mar 25, 2004||Scimed Life Systems, Inc.||Ureteral stent for improved patient comfort|
|US20040059428 *||Jun 27, 2003||Mar 25, 2004||Bottcher Benjamin J.||Medical stent with variable coil and related methods|
|US20040068228 *||Oct 4, 2002||Apr 8, 2004||Jon Cunningham||Device and method for stabilizing catheters|
|US20040078026 *||Oct 21, 2002||Apr 22, 2004||Wagner Robert B.||Method and apparatus for pleural drainage|
|US20040084049 *||Jun 25, 2003||May 6, 2004||Trudell Medical Limited||Nebulizing catheter system and methods of use and manufacture|
|US20040084050 *||Jun 25, 2003||May 6, 2004||Trudell Medical Limited.||Nebulizing catheter system and methods of use and manufacture|
|US20040092857 *||Sep 12, 2003||May 13, 2004||Clayman Ralph V.||Ureteral stent with small bladder tail(s)|
|US20040186552 *||Jan 27, 2004||Sep 23, 2004||Scimed Life Systems, Inc.||Medical stent and related methods|
|US20040221854 *||Apr 19, 2004||Nov 11, 2004||Respironics Inc.||Insufflation system and method|
|US20040225254 *||Apr 27, 2004||Nov 11, 2004||Don Tanaka||Localized pleurodesis chemical delivery|
|US20040231674 *||May 12, 2004||Nov 25, 2004||Don Tanaka||Intra/extra-thoracic collateral ventilation bypass system|
|US20040237966 *||May 20, 2004||Dec 2, 2004||Don Tanaka||Methods and devices to assist pulmonary decompression|
|US20040244802 *||May 24, 2004||Dec 9, 2004||Don Tanaka||Lung reduction system|
|US20040244803 *||May 24, 2004||Dec 9, 2004||Don Tanaka||Intra-thoracic collateral ventilation bypass system|
|US20050025816 *||Jun 30, 2004||Feb 3, 2005||Don Tanaka||Methods and devices to accelerate wound healing in thoracic anastomosis applications|
|US20050161040 *||Feb 11, 2005||Jul 28, 2005||Don Tanaka||Collateral ventilation bypass trap system|
|US20050182353 *||Aug 14, 2003||Aug 18, 2005||Jochen Schmidberger||Medical instrument for suction and irrigation, and method for its production|
|US20060107961 *||Nov 19, 2004||May 25, 2006||Don Tanaka||Localized pleurodesis evacuation device|
|US20060118125 *||Nov 19, 2004||Jun 8, 2006||Don Tanaka||Pulmonary drug delivery|
|US20060118126 *||Nov 19, 2004||Jun 8, 2006||Don Tanaka||Methods and devices for controlling collateral ventilation|
|US20060122707 *||Jan 9, 2006||Jun 8, 2006||Mcweeney John O||Ureteral stent for improved patient comfort|
|US20060124126 *||Dec 10, 2004||Jun 15, 2006||Don Tanaka||Collateral ventilation device with chest tube/evacuation features|
|US20060207602 *||Mar 15, 2005||Sep 21, 2006||The Gov't Of The Us, As Represented By The Secretary Of Hhs, Nih Ofc Of Technology Transfer||Mucus slurping endotracheal tube|
|US20070051372 *||Aug 23, 2005||Mar 8, 2007||Don Tanaka||Collateral ventilation bypass system with retention features|
|US20070073213 *||Jul 5, 2005||Mar 29, 2007||Brown David C||Apparatus and method for increasing flow resistance around a probe|
|US20070163598 *||Jan 17, 2006||Jul 19, 2007||Asia Chang||Variable resistance pulmonary ventilation bypass valve|
|US20070270776 *||Aug 6, 2007||Nov 22, 2007||Respira, Inc.||Lung reduction system|
|US20080188809 *||Apr 7, 2008||Aug 7, 2008||Portaero, Inc.||Device and method for creating a localized pleurodesis and treating a lung through the localized pleurodesis|
|US20080188824 *||Apr 7, 2008||Aug 7, 2008||Portaero, Inc.||Implantable device and method for creating a localized pleurodesis and treating a lung through the localized pleurodesis|
|US20080281151 *||Feb 21, 2008||Nov 13, 2008||Portaero, Inc.||Pulmonary pleural stabilizer|
|US20080281295 *||Feb 21, 2008||Nov 13, 2008||Portaero, Inc.||Visceral pleura ring connector|
|US20080281433 *||Feb 21, 2008||Nov 13, 2008||Portaero, Inc.||Methods and devices to create a chemically and/or mechanically localized pleurodesis|
|US20080283065 *||Feb 21, 2008||Nov 20, 2008||Portaero, Inc.||Methods and devices to maintain patency of a lumen in parenchymal tissue of the lung|
|US20080287878 *||Feb 21, 2008||Nov 20, 2008||Portaero, Inc.||Pulmonary visceral pleura anastomosis reinforcement|
|US20080295829 *||Feb 21, 2008||Dec 4, 2008||Portaero, Inc.||Bridge element for lung implant|
|US20090151719 *||Sep 26, 2008||Jun 18, 2009||Breathe Technologies, Inc.||Methods and devices for treating sleep apnea|
|US20090205641 *||Feb 12, 2009||Aug 20, 2009||Portaero, Inc.||Pneumostoma management device and method for treatment of chronic obstructive pulmonary disease|
|US20090205643 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Accelerated two-phase surgical procedure for creating a pneumostoma to treat chronic obstructive pulmonary disease|
|US20090205644 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Pneumostoma management system for treatment of chronic obstructive pulmonary disease|
|US20090205645 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Pneumostoma management method for the treatment of chronic obstructive pulmonary disease|
|US20090205646 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Flexible pneumostoma management system and methods for treatment of chronic obstructive pulmonary disease|
|US20090205648 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Pneumostoma management system with secretion management features for treatment of chronic obstructive pulmonary disease|
|US20090205649 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Multi-layer pneumostoma management system and methods for treatment of chronic obstructive pulmonary disease|
|US20090205650 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Variable length pneumostoma management system for treatment of chronic obstructive pulmonary disease|
|US20090205651 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||One-piece pneumostoma management system and methods for treatment of chronic obstructive pulmonary disease|
|US20090209856 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Two-phase surgical procedure for creating a pneumostoma to treat chronic obstructive pulmonary disease|
|US20090209909 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Percutaneous single-phase surgical procedure for creating a pneumostoma to treat chronic obstructive pulmonary disease|
|US20090209924 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Enhanced pneumostoma management device and methods for treatment of chronic obstructive pulmonary disease|
|US20090209936 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Aspirator and method for pneumostoma management|
|US20090209971 *||Feb 18, 2009||Aug 20, 2009||Portaero, Inc.||Surgical instruments for creating a pneumostoma and treating chronic obstructive pulmonary disease|
|US20100129420 *||Jan 20, 2010||May 27, 2010||Portaero, Inc.||Methods and devices to accelerate wound healing in thoracic anastomosis applications|
|US20100147294 *||Feb 19, 2010||Jun 17, 2010||Portaero, Inc.||Devices and methods to maintain the patency of an opening relative to parenchymal tissue of the lung|
|US20100147295 *||Feb 19, 2010||Jun 17, 2010||Portaero, Inc.||Devices and methods to create and maintain the patency of an opening relative to parenchymal tissue of the lung|
|US20100170507 *||Jan 8, 2010||Jul 8, 2010||Portaero, Inc.||Pneumostoma management device with integrated patency sensor and method|
|US20100204707 *||Feb 11, 2010||Aug 12, 2010||Portaero, Inc.||Surgical instruments for creating a pneumostoma and treating chronic obstructive pulmonary disease|
|US20100229863 *||Sep 16, 2009||Sep 16, 2010||Dolphys Technologies, B.V.||Jet ventilation catheter, in particular for ventilating a patient|
|US20100286544 *||Jun 8, 2010||Nov 11, 2010||Portaero, Inc.||Methods and devices for assessment of pneumostoma function|
|US20110027334 *||Jul 29, 2009||Feb 3, 2011||Nellcor Puritan Bennett Llc||Multilayer medical devices having an encapsulated edge and methods thereof|
|US20110118669 *||Jan 25, 2011||May 19, 2011||Portaero, Inc.|
|US20120130415 *||Jul 29, 2011||May 24, 2012||Vascular Insights Llc||Vascular treatment device|
|US20130298904 *||Jul 1, 2013||Nov 14, 2013||The Research Foundation Of State University Of New York||Methods, Devices And Formulations For Targeted Endobronchial Therapy|
|US20140257243 *||Mar 11, 2013||Sep 11, 2014||Covidien Lp||Controlling catheter flow|
|US20140358075 *||May 28, 2013||Dec 4, 2014||Smh Device Corp.||Tunneled Catheter with Hemostasis Mechanism|
|CN103706013A *||Dec 31, 2013||Apr 9, 2014||高光凯||Automatic pressure stabilizing device for tracheal intubation airbag of hyperbaric oxygen chamber|
|CN103706013B *||Dec 31, 2013||Aug 19, 2015||高光凯||高压氧舱气管插管气囊自动稳压装置|
|EP0052483A1 *||Nov 12, 1981||May 26, 1982||Frederic J. Toye||Tracheostomy apparatus|
|EP1196086A1 *||Jul 6, 2000||Apr 17, 2002||W. Lowe Michael||Diagnostic catheter system for nasopharyngeal obstructions|
|EP1196086B1 *||Jul 6, 2000||Mar 9, 2011||Michael W. Lowe||Diagnostic catheter system for nasopharyngeal obstructions|
|EP1658867A1||Nov 16, 2005||May 24, 2006||Nitinol Development Corporation||Localized pleurodesis evacuation device|
|EP1757322A1||Aug 21, 2006||Feb 28, 2007||Nitinol Development Corporation||Collateral ventilation bypass system with retention features|
|WO1986003127A1 *||Nov 19, 1985||Jun 5, 1986||T P International Corporation||Transtracheal catheter system and method|
|WO1988010128A1 *||Jun 20, 1988||Dec 29, 1988||Howes Randolph M||Flow enhanced multi-lumen venous catheter device|
|WO1989002761A1 *||Sep 26, 1988||Apr 6, 1989||Spofford Bryan T||Transtracheal catheter system|
|WO1992000774A1 *||Jul 8, 1991||Jan 23, 1992||Brigham & Women's Hospital||High-pressure jet ventilation catheter|
|WO1996029110A1 *||Mar 15, 1996||Sep 26, 1996||Board Of Regents, The University Of Texas System||Method and apparatus for directing air flow within an intubated patient|
|WO1998025664A1 *||Dec 11, 1997||Jun 18, 1998||The Johns Hopkins University School Of Medicine||Method and apparatus for providing ventilatory support to a patient|
|WO1999022804A1 *||Oct 23, 1998||May 14, 1999||Teleflex, Incorporated||Introducing device with flared sheath end|
|WO2003080165A1 *||Mar 20, 2003||Oct 2, 2003||Board Of Regents, The University Of Texas System||Airway assembly|
|WO2005049122A1 *||Nov 24, 2003||Jun 2, 2005||George Mireas||Endotracheal tube with trachea protection|
|U.S. Classification||128/207.15, 604/161|
|International Classification||A61M25/06, A61M16/00, A61M25/00, A61M16/16, A61M25/04, A61M16/04|
|Cooperative Classification||A61M16/0497, A61M2016/0452, A61M25/0606, A61M25/0668, A61M16/00, A61M25/00, A61M16/0472, A61M2025/004, A61M25/04, A61M25/007, A61M16/16, A61M16/0465|
|European Classification||A61M25/00T10C, A61M25/06C, A61M16/16, A61M16/00, A61M16/04E, A61M25/00, A61M25/04, A61M25/06H1|