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Publication numberUS3640282 A
Publication typeGrant
Publication dateFeb 8, 1972
Filing dateAug 6, 1970
Priority dateAug 6, 1970
Also published asCA1004940A1, DE2127589A1, DE2127589B2
Publication numberUS 3640282 A, US 3640282A, US-A-3640282, US3640282 A, US3640282A
InventorsJack M Kamen, Carolyn J Wilkinson
Original AssigneeCarolyn J Wilkinson, Jack M Kamen
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tracheal tube with normally expanded balloon cuff
US 3640282 A
Abstract
A tracheal tube for use in intubation of a trachea, and embodying a resilient, yieldable cuff for effecting an air seal between the tube and the trachea. The cuff contains a resilient member, such as a rubber sponge, which resiliently maintains the cuff in an expanded position away from the tube. The cuff may be contracted by means of a vacuum applied thereinto by a secondary tube mounted on the tracheal tube. The cuff in its normal expanded position within the trachea affords a good seal and at the same time prevents injury to the tracheal wall by virtue of its yieldable contact therewith.
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Description  (OCR text may contain errors)

[ Feb. 8, 1972 llnited States Patent amen et al.

[54] TRACHEAL TUBE WITH NORMALLY n O h m 0 7 9 H 4 6 7 4 0 3 3,529,596 9/1970 Garner....

EXPANDED BALLOON CUFF n. U h S & n m P m 0 h T m e fi m 1K o mt m D PM e 4 y w W 1m mm W mm mlw .m M mm 4C ly h 0 mam 846 K m M m .mmnw h hGC m m n e v .m H .U

tleff [73] Assignee: said Kamen, by said Wilkinson [22] Filed:

[ ABSTRACT A tracheal tube for use in intubation of a trachea, and em- Aug. 6, 1970 [21] Appl. No.: 61,586

bodying aresilicnt, yieldable cuff for effecting an air seal 128/351, 128/344, 123/349 B between the tube and the trachea. The cuff contains a resilient 25/00 member, such as a rubber sponge, which resiliently maintains 128/348 349 349 the cuff in an expanded position away from the tube. The cuff [52] US. [51] Int. Cl. [58] Field of may be contracted by means of a vacuum applied thereinto by a secondary tube mounted on the tracheal tube. The cuff in its normal expanded position within the trachea afiords a good seal and at the same time prevents injury to the tracheal wall by virtue of its yieldable contact therewith.

[56] References Cited UNITED STATES PATENTS 10 Claims, 5 Drawing Figures Greenburg.....,.........

t S 5 6 9 1 l 0 1 2 5 l l 1 3 TRACHEAL TUBE WITH NORMALLY EXPANDED BALLOON CUFF BACKGROUND OF THE INVENTION The present invention relates to tracheal tubes and, more particularly, to tracheal tubes of the type embodying a cuff for effecting a seal between the tube and a trachea.

The primary object of the present invention is to afford a novel tracheal tube.

Another object is to enable an effective seal between a tracheal tube and a trachea to be effected in a novel and expeditious manner.

A further object of the present invention is to afford a novel cuff on a tracheal tube.

Tracheal tubes, as that term is used herein, may be of different types, such as, for example, orotracheal tubes, nasotracheal tubes and tracheostomy tubes. Also, such tubes may be flexible, the main body portion thereof being made of flexible material such as, for example, rubber or a suitable plastic material, such as, for example, polyethylene, or the like, or they may be stiff or rigid, being made of material such as stainless steel, or the like, the latter type of tubes being primarily useful as tracheostomy tubes. The present invention is intended for use in the construction of all such tracheal tubes.

As is well known in the art, tracheal tubes are commonly inserted into a persons trachea for various purposes, such as, for example, to enable the person to breathe, or to enable intermittent positive pressure ventilation of the respiratory tract to be carried out. Often, it is highly important, particularly in such instances as when positive pressure ventilation of the respiratory tract is to be carried out, that an airtight or substantially airtight seal be provided between the tracheal tube and the trachea. I-Ieretofore, various attempts have been made to effect such seals between tracheal tubes and the trachea, such as, for example, by using large tubes which completely fill the trachea, or using cuffs which are inflatable by forcing air or other working fluid thereinto. However, each of the methods of sealing heretoforeknown in the art have presented certain difficulties and complexities. It is an important object of the present invention to overcome such difficulties and complexities.

In the cuffed tubes heretofore known in the art, cuffs in the form of elastic diaphragms or tubes made of elastic material, such as latex rubber, have been mounted on the main tube in sealed surrounding relation thereto, with the cuff normally, and when being inserted into the trachea, being in uninflated or deflated condition. With such devices, after the incubation device has been inserted into the trachea, the cuff is inflated,

like a balloon, by feeding air or other working fluid thereinto at a positive pressure to thereby expand the cuff into engagement with the inner wall of the trachea. However, it has been found that such devices have several inherent disadvantages, the primary disadvantage being that they commonly cause injury to the trachea, causing lesions such as tracheal stenosis, tracheal malacia and localized erosion, and the like, particularly if it is necessary for the tube to remain in the trachea for prolonged periods of time. Various attempts have been made to prevent such injuries from occurring with the cuffs heretofore known in the art, such as, for example, by using alternately inflated double-cuffed tubes; using intermittently inflated cuffs; and by serial adjustment of the level of the cuffed tubes. However, these attempts have met with only limited success. It

. is another important object of the present invention to eliminate such injuries to the trachea, or at least to substantially reduce the likelihood and incidence of their occurring.

Another object of the present invention is to enable a seal to be effected in a novel and expeditious manner between a tracheal tube and a trachea by volume occlusion as distinguished from the pressure occlusion heretofore afforded by the aforementioned inflatable cuffs heretofore known in the art.

A tracheal tube constructed in accordance with the present invention comprises an elongated tube, which may be either flexible or stiff, for insertion into the trachea for feeding air, or the like, into and out of the respiratory tract of a patient. A cuff is mounted on the elongated tube for efiecting a seal between the tube and the trachea, after the tube has been inserted into operative positioned in the trachea. The cuff comprises a flexible, air impervious cover disposed in surrounding relation to a portion of the tube and hermetically sealed thereto, and a preferably porous resilient body portion, made of suitable material, such as, for example, sponge rubber, mounted around the elongated tube, within the cover for yieldingly urging the cover outwardly away from the tube. The tracheal tube also includes an auxiliary tube extending into the cover, in hermetically sealed relation thereto. With this construction air may be withdrawn from the cover through the auxiliary tube, to thereby cause the cuff to collapse to facilitate the insertion thereof into a trachea, and, after the cuff is in the desired position in the trachea, the auxiliary tube may be opened to the atmosphere and thereby permit the cuff to expand into yielding, sealing engagement with the trachea.

Other and further objects of the present invention will be apparent from the following description and claims and are illustrated in the accompanying drawings which, by way of illustration, show a preferred embodiment of the present invention and the principles thereof and what we now consider to be the best mode in which we have contemplated applying these principles. Other embodiments of the invention embodying the same or equivalent principles may be used and structural changes may be made as desired by those skilled in the art without departing from the present invention and the purview of the appended claims.

DESCRIPTION OF THE DRAWINGS In the drawings:

FIG. 1 is a fragmentary side elevational view of a tracheal tube embodying the principles of the present invention;

FIG. 2 is a longitudinal sectional view taken substantially along the line 22 in FIG. 1, and showing the tracheal tube disposed in operative position in a trachea, which is shown diagrammatically;

FIG. 3 is a transverse sectional view taken substantially along the line 33 in FIG. 2;

FIG. 4 is a transverse sectional view taken substantially along the line 4-4 in FIG. 5; and

- FIG. 5 is a view similar to FIG. 2, but showing certain parts disposed in different operative positions.

DESCRIPTION OF THE EMBODIMENT SHOWN HEREIN A tracheal tube or intubation device 1, embodying the principles of the present invention, is shown in the drawings to illustrate the presently preferred embodiment of the present invention.

The tracheal tube 1 embodies, in general, an elongated tube 2 having a cuff 3 mounted on one portion thereof, with a tube 4 extending into the cuff 3 for a purpose which will be described in greater detail presently. The tube 2 may be of any suitable construction and is for the purpose of feeding air, or the like, into and out of the respiratory tract of a patient into whose trachea the tracheal tube or intubation device I has been inserted. Commonly, when the tracheal tube 1 is to be used as an endotracheal tube, such as, either an orotracheal or nasotracheal tube, the tube 2 thereof is preferably flexible and may be made of any suitable material such as, for example, rubber or a suitable plastic, such as polyethylene, or the like. However, in other instances, such as, for example, when the tracheal tube 1 is to be used as a tracheostomy tube, it may be desired to have the tube 2 thereof be rigid in construction and made of suitable material such as, for example, stainless steel, or the like.

In the drawings, the tube 2 is shown as having a distal end 5, which is cut on a slope or bevel 6, FIG. 1, extending across the end opening of the tube 2 so as to facilitate insertion of the tube 2 into the trachea. The end portion 5 also has a transverse opening 7, FIG. 2, formed therein, such construction for tracheal tubes being common as is well known in the art. The other, or proximal end 8 of the tube 2 may be of any suitable configuration, such as that shown in FIG. I. It will be understood by those skilled in the art that the tube 2 may be of any suitable length, such tubes, commonly being in the nature of nine to fourteen inches in length, when used in an endotracheal tube, and commonly being considerably shorter when used as a tracheostomy tube.

The cuff 3, FIGS. 3 and 5, includes an air impervious cover 9 and a body portion 10 disposed within the cover 9. Both the body portion 10 and the cover 9 are disposed around a portion of the tube 2 is spaced relation to the ends 5 and 8 thereof. In practice, the wit 3 will normally be disposed substantially closer to the end 5 of the tube 2 than to the end 8 thereof, such as, for example, being spaced from the end portion 6 a distance in the nature of one-half to three-fourths of an inch on a tube having an overall length of 14 inches. However, as will be appreciated by those skilled in the art, the cuff 3 may be disposed at any suitable location along the tube 2, the particular location thereof depending upon the intended use of the intubation device 1. For example, normally, when the end S of the tube is to be inserted into the windpipe or trachea, only, the cuff 3 preferably will normally be spaced a relatively short distance from the end portion 6, such as, for example, the aforementioned one-half to three-fourths of an inch. However, if the intubation device 1 is to be inserted further than the trachea, such as, for example, into the bronchia, the cuff 3 preferably would be spaced a greater distance from the end portion 6 so that it would remain in the trachea when the end portion 5 was inserted into the bronchia.

The cover 9 is flexible and may be made of any suitable material such as, for example, latex rubber or a suitable plastic sheet material, such as, polyethylene, or the like. Preferably, it also is elastic for reasons which will be discussed in greater detail presently, and, of course, under such circumstances it would be made of a suitable elastic material such as the aforementioned latex rubber.

The cover 9 is tubular in form, and the end portions 11 and 12 thereof are hermetically sealed to the outer surface of the tube 2 by suitable means, such as, for example, being vulcanized thereto or by a suitable cement such as rubber cement, or the like. In the preferred form of the intubation device 1 shown in the drawings, reinforcing rings 13 are mounted on the end portions 11 and 12 of the cover 9 to insure the maintenance of any effective seal between the end portions 11 and 12 and the tube 2. The reinforcing rings 13 may be made of any suitable material such as rubber or a suitable plastic such as polyethylene and may be secured to the outer faces of the end portions 11 and 12 by suitable means such as vulcanization or a suitable cement.

The body portion 10 affords a resilient mass which preferably completely fills the cover 9 between the end portions 11 and 12 thereof and, when the intubation device 1 is disposed in normal inoperative position, outside the trachea, preferably is effective to yieldingly hold the cover 9 in fully expanded position, as shown in FIG. 1. The body portion 10 may be made of any suitable resilient material, but, preferably, is made of a spongelike resilient material having a multitude of interstices spread therethrough, such as, for example, sponge rubber or a suitable resilient plastic material, such as, for example, foamed polyurethane, or the like, for a purpose which will be discussed in greater detail presently.

The tube 4 has one end portion 14 extending into the cuff 3. As shown in the drawings, the tube 4 extends along the tube 2, and, preferably, the tube 4 is formed integrally with the tube 2 and terminates in a free end portion 15 which extends outwardly beyond the end 8 of the tube 2. However, as will be appreciated by those skilled in the art, the tube 4 may be formed separately from the tube 2 and inserted into the cuff 3 in a suitable manner without departing from the purview of the broader aspects of the present invention.

In the intubation device shown in the drawings, wherein the tube 4 extends along tube 2, FIG. 2, the tube 4 extends through the end portion 11 of the cover 9 and the latter is hermetically sealed thereto in the same manner as it is so sealed to the tube 2. With this construction, it will be seen that when the tube 4 is open to the atmosphere at the end portion 15 thereof, and the intubation device 1 is disposed outside of a trachea, the body portion 10 is effective to yieldingly hold the cover 9 in fully outwardly extended position, as shown in FIG. 1. However, by the application of a vacuum to the end portion 15 of the tube 4, air may be withdrawn from within the cover 9 through the tube 4 to thereby afford a partial vacuum within the cuff 3 and cause it to collapse from the position shown in FIG. 1 to a position such as that shown in FIG. 5, because of the imbalance between the pressures within the cover 9 and the atmospheric pressure exteriorly thereof. It will be seen that by making the body portion 10 of a resilient material having interstices therein, such as, for example, the aforementioned foam rubber or foamed polyurethane, the withdrawal of air from within the cover 9 may be substantially uniform throughout the entire area between the end portions 11 and 12 thereof, so as to effect a relatively uniform, substantially complete collapse of all portions of the cover 9 throughout the length thereof.

With the intubation device 1 constructed in the aforementioned manner, when it is desired to insert it into a trachea, such as the trachea l6 diagrammatically shown in FIGS. 2-5, a partial vacuum may be applied to the end portion 14 of the tube 4 to thereby cause the cuff 3 to move from its normal expanded position shown in FIG. 1 to a collapsed position such as that shown in FIG. 5. While maintaining the vacuum on the tube 4, the tracheal tube 1 may be inserted into a trachea, such as the trachea 16, the cuff 3 being disposed in the aforementioned collapsed position to thereby facilitate such insertion. Thereafter, when the tracheal tube 1 has been inserted into the desired position in the trachea 16, the vacuum on the tube 4 may be released to thereby permit the cover 9 to be expanded outwardly by the yielding expansion of the resilient body member 10, the expansion of the cover from the collapsed position being to a position wherein it is yieldingly held by the body portion 10 in engagement with the inner wall 17 of the trachea 16, FIGS. 2 and 3. Such expansion, it will be seen, is caused by the resiliency of the body portion 10 and is a direct result of the volumetric expansion thereof. This is to be distinguished from the expansion of the aforementioned cuffs heretofore known in the art, which cuffs are expanded by the application of a positive pressure, by the introduction of air or other working fluid thereinto under pressure.

It will be remembered that the cuff 3 may be made of any suitable flexible material, but that preferably it is made of an elastic material, such as, for example, latex rubber. The latter is true because with the cover made of a suitable elastic material it may be so constructed that no wrinkles are formed therein in any position thereof between the fully expanded position shown in FIG. 1 and the collapsed position shown in FIG. 5, whereas with some materials which are flexible but do not have this degree of elasticity such as, for example, certain plastic sheet materials, and the like, wrinkles could be formed when the cover 9 is disposed in a position wherein it was extended outwardly less than that which it occupies when in fully extended position. Although it is of little or no importance whether the cover 9 is wrinkled when the cuff 3 is in fully collapsed position, as shown in FIG. 5, and it is not essential or an absolute requirement that no wrinkles be .formed in the cover 9 when the cuff 3 is disposed in operative engagement with a trachea, such as is shown in FIG. 2, it is preferred that no such wrinkles be present when the cuff 3 is in operative engagement with a trachea. Therefore, to insure against such wrinkles, we prefer that the cover 9 be made of a suitable elastic material such as, for example, the aforementioned latex rubber.

As will be appreciated by those skilled in the art, the size of the cuff 3 in its nonnal, fully expanded state, as shown in FIG. I, and the characteristics of the cover 9 and the body portion are factors in the determination of the pressure with which the cuff 3 presses outwardly on the trachea such as the trachea 16, when it is disposed in operative engagement with the inner wall 17 of such a trachea. Preferably, the size of the cuff 3 and the characteristics of the cover 9 and the body portion 10 are such that the outward pressure of the cuff 3 on a trachea is no greater than fourteen centimeters of water, when the intubation device 1 is in normal operative position in the trachea and the cuff 3 is in effective sealing engagement with the latter. However, as will be appreciated by those skilled in the art, this is set forth merely by way of illustration of the preferred embodiment of the present invention and not by way of limitation and variations in the size and characteristics of the cuff 3 may be made by those skilled in the art without departing from the purview of the present invention.

From the foregoing it will be seen that the present invention affords a novel intubation device embodying a cuff which is constructed and operates in a novel and expeditious manner.

Also, it will be seen that the present invention affords a novel intubation device for use in tracheas wherein effective sealing between the intubation device and the trachea may be afforded in a novel and expeditious manner.

In addition, it will be seen that the present invention affords a novel intubation device which is practical and efi'rcient in operation and which may be readily and economically produced commercially.

Thus, while we have illustrated and described the preferred embodiment of our invention, it is to be understood that this is capable of variation and modification, and we therefore do not wish to be limited to the precise details set forth, but desire to avail ourselves of such changes and alterations as fall within the purview of the following claims.

We claim:

1. A tracheal tube comprising a. an elongated tube having an outer surface, proximal end and distal end,

b. a cuff mounted on said elongated tube adjacent to said distal end and in spaced relation to said proximal end,

c. said cuff comprising 1. a flexible tubular cover a. disposed on said elongated tube in surrounding rela tion thereto, and

b. having its ends secured to said outer surface, and

2. a resilient body portion mounted in said cover,

d. said body portion having I. normally an expanded position, wherein it is effective to hold a portion of said cover outwardly away from said elongated tube, and

2. a collapsed position, wherein the outer surface thereof is disposed closer to said elongated tube than in said expanded position to thereby permit said portion of said cover to assume a position closer to said elongated tube, and

e. means connected to said cuff for creating and releasing a vacuum in said cover to thereby cause said body portion to move toward said collapsed and expanded positions, respectively. 1

2. A tracheal tube comprising i an elongated tube having a longitudinally extending opening for feeding working fluid therethrough, a proximal end and a distal end,

b. a cufi' mounted on said elongated tube adjacent said distal end and in spaced relation to said proximal end for effecting a seal between said elongated tube and a trachea in which it is disposed,

c. said cuff including resilient means for normally holding said cuff in expanded position wherein it extends outwardly from said elongated tube under atmospheric conditions, and

d. means operatively connected to said cuff for l. creating a vacuum therein and thereby move said cuff inwardly from said expanded position for movement of said cuff through such a trachea, and

2. releasing such a vacuum in said cuff to thereby permit said cuff to move outwardly toward said expanded position under urging of said resilient means into position to effect said seal with such a trachea in which said tube is disposed in operative position.

3. A tracheal tube as defined in claim 2, and in which a. said cuff includes a cover member, and

b. said resilient means comprises a resilient body portion disposed in said cover member for yieldingly urging said cover member outwardly away from said elongated tube.

4. A tracheal tube for use in intubating the trachea and comprising a. an elongated tube for insertion into operative position into a trachea for feeding air into and out of the latter and having a proximal end and a distal end, b. a cuff mounted on the distal end portion of said elongated tube in spaced relation to said proximal end thereof in position to be disposed within such a trachea when said elongated tube is disposed in said operative position therein, c. said cufi' having 1. a normal position wherein it is disposed in radially outwardly expanded position relative to said elongated tube, and

2. another position wherein it extends a lesser distance, radially, from said elongated tube than in said normal position,

d. said cuff including resilient means for normally yieldingly holding said cuff in said normal position,

c. said cuff being movable 1. into said other position for movement through such a trachea, and

2. toward said normal position from said other position into a position for effecting a seal between said elongated tube and said trachea within which said cuff is so disposed, and

means operatively connected to said cuff for creating and releasing a vacuum therein and thereby causing said cuff to move toward said other and normal positions, respectively.

. A tracheal tube as defined in claim 4 and in which a. said cuff comprises 1. a flexible cover secured to said elongated tube, and 2. a resilient filler mounted in said cover for holding the latter in said normal position when said vacuum is completely released and said cuff is completely free to expand.

6. A tracheal tube as defined in claim 5 and in which a. said filler has interstices spread therethrough.

7. A tracheal tube as defined in claim 4 and in which a. said cuff comprises 1. a flexible tube a. disposed in surrounding relation to said elongated tube, and b. having end portions hermetically sealed to said elongated tube, and 2. a spongelike elastic mass mounted in said flexible tube for yieldingly urging the latter outwardly.

8. A tracheal tube as defined in claim 7 and in which a. said flexible tube is elastic, and

b. said elastic mass comprises foam rubber.

9. A tracheal tube as defined in'claim 4 and in which a. said last mentioned means comprise another tube,

b. said cuff comprises 1. a flexible cover a. disposed in surrounding relation to said elongated tube and to said other tube, and b. hermetically sealed to said last mentioned tubes, and 2. a spongelike elastic body portion disposed around said elongated tube within said cover for yieldingly urging the latter outwardly away from said elongated tube. 10. A tracheal tube as defined in claim 4 and in which a. said elongated tube is flexible,

one of said ends of said elastic tube hermetically sealed to said other tube, and

2. a resilient foam rubber body portion mounted around said elongated and other tubes within said elastic tube in position to yieldingly urge said elastic tube outwardly away from said elongated and other tubes between said ends of said elastic tube.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2548602 *Apr 9, 1948Apr 10, 1951Leonard GreenburgInflatable dilator
US3211152 *Nov 15, 1961Oct 12, 1965Ernest A SternSafety endotracheal tube cuff
US3504676 *Jun 13, 1967Apr 7, 1970Lomholt Vagn Niels FinsenEndotracheal balloon catheter provided with inflation pressure regulating valve
US3529596 *Apr 3, 1968Sep 22, 1970Garner Charles GAutomatic intermittent tracheotomy tube cuff inflator-deflator
US3565079 *Apr 9, 1968Feb 23, 1971Richard Robert JacksonSelf-inflating endotracheal tube
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3799173 *Mar 24, 1972Mar 26, 1974J KamenTracheal tubes
US3833004 *Oct 26, 1973Sep 3, 1974American Hospital Supply CorpBalloon catheter having single ferrule support for balloon bindings
US3889685 *Nov 2, 1973Jun 17, 1975Cutter LabTubular unit with vessel engaging cuff structure
US3991767 *Mar 6, 1975Nov 16, 1976Cutter Laboratories, Inc.Tubular unit with vessel engaging cuff structure
US4141364 *Mar 18, 1977Feb 27, 1979Jorge SchultzeExpandable endotracheal or urethral tube
US4168710 *Aug 10, 1977Sep 25, 1979The Kendall CompanyBalloon cuff and catheter assembly
US4227293 *Dec 11, 1978Oct 14, 1980The Kendall CompanyMethod of catheter manufacture
US4304228 *Jul 14, 1980Dec 8, 1981Bivona Surgical Instruments, Inc.Outside locking tracheal tube
US4305387 *Nov 19, 1979Dec 15, 1981Societe Technique Pour L'industrie NouvelleDevice for providing artificial respiration to patients
US4386179 *May 7, 1980May 31, 1983Medical Research Associates, Ltd.Hydrocarbon block copolymer with dispersed polysiloxane
US4417576 *Feb 25, 1982Nov 29, 1983Baran Ostap EDouble-wall surgical cuff
US4495948 *Aug 10, 1981Jan 29, 1985Bivona Surgical Instruments, Inc.Tracheal tubes
US4586505 *May 3, 1984May 6, 1986Universal Prosthetics, Inc.Laryngeal and tracheal stent
US4636195 *Apr 4, 1985Jan 13, 1987Harvey WolinskyMethod and apparatus for removing arterial constriction
US4653514 *May 29, 1984Mar 31, 1987Bivona, Inc.Device for strengthening the vaginal muscles
US4768522 *Feb 24, 1987Sep 6, 1988Exta, Inc.Device for exercising vaginal muscles
US4795430 *Jan 15, 1988Jan 3, 1989Corpak, Inc.Device for intubation of percutaneous endoscopic ostomy
US4821722 *Jan 6, 1987Apr 18, 1989Advanced Cardiovascular Systems, Inc.Self-venting balloon dilatation catheter and method
US4900306 *Dec 28, 1988Feb 13, 1990Corpak, Inc.Device for intubation of percutaneous endoscopic ostomy
US4917107 *Mar 31, 1986Apr 17, 1990Medi-Tube CorporationEndotracheal tube/stethoscope combination
US5009639 *Apr 22, 1988Apr 23, 1991Fresenius, AgGastric/duodenal/jejunal catheter for percutaneous enternal feeding
US5027812 *May 4, 1990Jul 2, 1991Bivona, Inc.Tracheal tube for laser surgery
US5033466 *Jun 19, 1990Jul 23, 1991Weymuller Jr ErnestDoble-cuffed endotracheal tube
US5078681 *Oct 23, 1989Jan 7, 1992Olympus Optical Co., Ltd.Balloon catheter apparatus with releasable distal seal and method of operation
US5100384 *Mar 30, 1990Mar 31, 1992Wilson-Cook Medical, Inc.Method and device for percutaneous intubation
US5192290 *Aug 29, 1990Mar 9, 1993Applied Medical Resources, Inc.Embolectomy catheter
US5256143 *Dec 28, 1990Oct 26, 1993Advanced Cardiovascular Systems, Inc.Self-venting balloon dilatation catheter
US5269296 *Feb 17, 1993Dec 14, 1993Landis Robert MNasal continuous positive airway pressure apparatus and method
US5282464 *Nov 23, 1992Feb 1, 1994Brain Archibald Ian JeremyCombined laryngeal mask and reflectance oximeter
US5308325 *Jan 28, 1991May 3, 1994Corpak, Inc.Retention balloon for percutaneous catheter
US5411509 *Sep 30, 1992May 2, 1995Applied Medical Resources CorporationClot removal system
US5439444 *Apr 26, 1994Aug 8, 1995Corpak, Inc.Pre-formed member for percutaneous catheter
US5477852 *Nov 19, 1993Dec 26, 1995Airways Ltd., Inc.Device for treatment of sleep apnea
US5494029 *Jun 23, 1994Feb 27, 1996Hood LaboratoriesLaryngeal stents
US5638813 *Jun 7, 1995Jun 17, 1997Augustine Medical, Inc.Tracheal tube with self-supporting tracheal tube cuff
US5657752 *Mar 28, 1996Aug 19, 1997Airways AssociatesNasal positive airway pressure mask and method
US5687715 *Dec 22, 1995Nov 18, 1997Airways Ltd IncNasal positive airway pressure apparatus and method
US5988167 *May 2, 1997Nov 23, 1999Kamen; Jack M.Foam cuff for laryngeal mask airway
US6012452 *Oct 8, 1998Jan 11, 2000Smiths Industries Public Limited CompanyLaryngeal mask assemblies
US6045531 *Jul 22, 1998Apr 4, 2000Chase Medical Inc.Catheter having a lumen occluding balloon and method of use thereof
US6068608 *May 1, 1997May 30, 2000Chase Medical, Inc.Method of using integral aortic arch infusion clamp
US6132397 *May 1, 1997Oct 17, 2000Chase Medical Inc.Integral aortic arch infusion clamp catheter
US6241699Jul 22, 1998Jun 5, 2001Chase Medical, Inc.Catheter system and method for posterior epicardial revascularization and intracardiac surgery on a beating heart
US6322534Oct 8, 1999Nov 27, 2001Cordis CorporationVariable stiffness balloon catheter
US6526977Feb 23, 1999Mar 4, 2003Goebel Fred G.Tracheal breathing apparatus
US6551272Sep 10, 1997Apr 22, 2003Goebel Fred G.Stomach probe
US6607544Oct 19, 1999Aug 19, 2003Kyphon Inc.Expandable preformed structures for deployment in interior body regions
US6719773Jun 19, 2000Apr 13, 2004Kyphon Inc.Expandable structures for deployment in interior body regions
US6745773Sep 8, 1997Jun 8, 2004Dr. Fred Goebel Patentverwaltung GmbhTracheal tube
US6802317Nov 15, 2002Oct 12, 2004Fred Goebel Patentvarwaltung GmbhTracheal ventilating device
US6951555Nov 7, 2000Oct 4, 2005Chase Medical, L.P.Catheter having integral expandable/collapsible lumen
US6979341Apr 18, 2001Dec 27, 2005Kyphon Inc.Expandable preformed structures for deployment in interior body regions
US7066914Mar 16, 2005Jun 27, 2006Bird Products CorporationCatheter having a tip with an elongated collar
US7261720Oct 7, 2002Aug 28, 2007Kyphon Inc.Inflatable device for use in surgical protocol relating to fixation of bone
US7591830Sep 20, 2006Sep 22, 2009Rutter Michael JohnAirway balloon dilator
US7722624Feb 23, 2004May 25, 2010Kyphon SĀRLExpandable structures for deployment in interior body regions
US7758649Aug 4, 2006Jul 20, 2010Integrity Intellect Inc.Reversibly deformable implant
US7771446Mar 21, 2008Aug 10, 2010Rutter Michael JohnBalloon dilator
US7785290Aug 7, 2006Aug 31, 2010Gore Enterprise Holdings, Inc.Non-shortening high angle wrapped balloons
US7875035Oct 30, 2007Jan 25, 2011Kyphon SarlExpandable structures for deployment in interior body regions
US7909810Dec 1, 2008Mar 22, 2011Medtronic Vascular, IncGuiding catheter with resiliently compressible occluder
US7976518Jan 13, 2005Jul 12, 2011Corpak Medsystems, Inc.Tubing assembly and signal generator placement control device and method for use with catheter guidance systems
US8424516 *Jul 6, 2009Apr 23, 2013Terence Kernan GrayVentilating tube and stylet system
US8460240Aug 7, 2006Jun 11, 2013W. L. Gore & Associates, Inc.Inflatable toroidal-shaped balloons
US8585640Jun 28, 2010Nov 19, 2013W.L. Gore & Associates, Inc.Non-shortening high angle wrapped balloons
US8597566Jul 24, 2009Dec 3, 2013W. L. Gore & Associates, Inc.Non-shortening wrapped balloon
US8636690Nov 2, 2009Jan 28, 2014W. L. Gore & Associates, Inc.Catheter balloons with integrated non-distensible seals
US20110000485 *Jul 6, 2009Jan 6, 2011Terance Kernan GrayVentilating tube and stylet system
EP0072230A1Aug 9, 1982Feb 16, 1983Bivona, Inc.Tracheal tubes
EP0088173A1 *Mar 5, 1982Sep 14, 1983Bivona, Inc.Device for exercising the vaginal muscles
WO2006002364A2 *Jun 24, 2005Jan 5, 2006Health Resource LlcEndotracheal tube with integral heart, lung, and temperature monitor
Classifications
U.S. Classification128/207.15, 604/103.11
International ClassificationA61M16/04
Cooperative ClassificationA61M16/0434, A61M16/04
European ClassificationA61M16/04