|Publication number||US3373735 A|
|Publication date||Mar 19, 1968|
|Filing date||Oct 21, 1965|
|Priority date||Oct 21, 1965|
|Also published as||DE1491731B|
|Publication number||US 3373735 A, US 3373735A, US-A-3373735, US3373735 A, US3373735A|
|Inventors||John P Gallagher|
|Original Assignee||John P. Gallagher|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (116), Classifications (19)|
|External Links: USPTO, USPTO Assignment, Espacenet|
J. P. GALLAGHl-:R 3,373,735
MEDICAL-SURGICAL TUBE Filed oct. 21, 1965 vg, IO :sa G O O @I @OOO Bywgwu ATTORNEYS United States Patent O 3,373,735 MEDICAL-SURGICAL TUBE .lohn P. Gallagher, 2415 Foxhall Road NW.,
` Washington, D.C. 20007 Filed Oct. 21, 1965, Ser. No. 500,118 7 Claims. (Cl. 12S-2) This invention relates to an improved medical-surgical tube and in particular to such a tube having a colorchange acid-base indicator means associa-ted `therewith.
In many surgical or clinical procedures, in which tubes or catheters are employed, it is essential to be able to determine the location of the outlet or distal end o-f the tube within the body of the patient. One important and common use of medical-surgical tubes is for feeding patients wherein a feeding tube is inserted through one of the nostrils into the stomach of the patient. After the tube is lodged in the stomach, the desired fluids may 'be forced through the tubel directly int-o the patients stomach. However, .it is not uncommon, in passing the distal en-d of the tube from the nasal cavity toward the stomach, that the distal end enters the traohea whereby the distal end lodges in a lung rather than the stomach of a patient. Forcing of fluids into such a mislocated tube could result in undesirable complications.
l/Iedieal-.surgical tubes having X--ray o-paque portions are known whereby directing7 a beam of X-rays through the body of a patient in the neighborhood of the inserted tube while observing the relative position of the tube a skilled technician or a physician could determine whether the feeding tube is correctly positioned in the stomach or incorrectly positioned in a lung of the patient. While the use of the X-ray technique for determining the position of medical-surgical tubes will provide the desired result-s such techniques require substantial skills and considerable time and equipment.
I-t is, therefore, a principal object of the present invention to provide a simple, relatively inexpensive, medicalsurgical tube having incorporated therein a color-change acid-base indicator means whereby it may be simply, quickly and inexpensively determined if, for example, the distal end of a feeding tube is correctly positioned in a patients stomach by merely determining the color of a color indicator which has 'been bathed in the body fluid surrounding the distal end of the tube.
These and other objects and advantages of the present invention are provided by a medical-surgical tube having an internal end portion adapted to be inserted within a body cavity and an external end portion adapted to remain outside of the body, a color-change indicator carrier means associated with the external end portion of the tube and means providing liquid communication between the inner wall of the tube and said indicator carrier means.
The invention will be more particularly described with specic reference to a stom-ach tube and in conjunction with the illustrative embodiments of the invention sho-wn in the drawings wherein:
FIGURE l is a diagrammatic view of the upper portion of the human head illustrating one method of positioning a stomach tube through the nasal passage into the stomach of the patient;
FIGURE 2 is a section on line 2 2 of FIGURE l;
FIGURE 3 is a transverse section on line 3-3 of FIGURE 2;
FIGURE 4 is a transverse section .simil-ar to that illustrated in FIGURE 2 of a further form of the present invention; and
FIGURE 5 is a longitudinal sectional view similar to that shown in FIGURE 3 of a further form of the improved medioal-surgical tube of the invention.
Referring to the drawings and in particular to FIG- ICC URES l, 2 and 3, 10 generally designates a stomach tube constructed in accordance with the present invention.
The tube 10 has a distal, or internal end portion 14 and an external end portion 12. In FIGURE l the stomach tube 10 is4 shown passing through a nostril of a patient 15, down through the esophagus 18, thence to the stomach indicated by the reference arrow. Also in FIG- URE l, in broken lines, there is illustrated the tube 10 passing through the nasal passage of the patient 15 and into the larynx, through the trachea thence into the lungs in a manner not desired where the tube 10 is to be used to feed the patient 15.
Now referring particularly to FIGURES 2 and 3, adjacent the external end portion 12 of the tube 10 an absorbent piaper ring 22 is molded within the tu'be intermediate the outer wall 24 and the inner wall 26 .with the axis of the ring of absorbent paper 22 being generally coaxial with the axis of the bore of the tube. A plurality of perforations 28 pass through ythe inner wall 26 o'f the tube 10 to the inner surface 30 of the absorbent paper ring 22 whereby liquid within the tube will bath the absorbent paper. In this form of the invention the absorbent paper 22 provides a carrier means for a colorchange indicator. Preferably the color-change indicator is of the acid-base type and as used herein the color-change indicator is a substance which is used for the visual detection and determination of a specific constituent present in a liquid or mixture of liquids.
In general, indicators for the detection of acids and bases consist of substance that undergo visual change Within :a predetermined limited range of hydrogen iron ooncentrationjMany such indicators are known in the art. Of the well-known indicators, litmus, a blue coloring matter from various species of liohens, particularly Vrariolaria, has been found to be a very satisfactory colorchange acid-base indicato-r for the improved stomach tube. Litmus is partially soluble in water or alcohol and when used as .an acid-base indicator it turns red at pH 4.5 and blue .at pH 8.3. Litmus is non-toxis and in view of its nontoxi-mity has been used as a coloring agent for beve-rages.
Prior to sale of the improved medical-surgical tube, the carrier 22 or the color-change indicator is charged with for example a litmus solution which after drying remainswithin the carrier..
Other useful color-change acid-base indicators are set forth in the following table with their color characterisitics:
TAB LE I Trade Name Methyl Orange Phenol Red Phenolphthalein.
In operation of the stomach tube hereinabove described with reference to the FIGURES 1 through 3, after the tube is inserted in the stomach of a patient a small amount of the fluid present in the body adjacent the distal end is drawn into the tube to pass through the openings 28 and thus wet the color-change indicator carrier 22. If the distal end of the tube is properly within the stomach of the patient, and if the indicator is, for example, litmus the absorbent paper 22 will turn red as, on the average the pH of stomach juices is about 1 to about 2. If, however, the distal end of the tube has become improperly lodged in the lungs, the color indicator would indicate a blue color as the pH of the mucous and other uids in the lungs averages about 7 wit a range of from about 7.45 to about 8.15.
The juices bathing the lower end of the tube 10 may be drawn into the tube, to the zone of the color-change indicator by suction means or as illustrated, in FIGURE 3, a plurality of capillary bores 40 may be provided in the tube, connecting the distal end and the absorbent paper 22. As a substitute for or in conjunction with the opening 28 and/or the capillary tubes 40, the tube may be provided with a channel extending from the distal end to the carrier 22, which channel may be tilled with a wicking substance such as absorbent paper and the like whereby body uids at the distal end of the tube may be wicked into wetting relationship with the ring type carrier 22 for the color-change indicator.
Referring to FIGURE 4 of the drawing, a further form of the improved medical-surgical tube is illustrated. In FIGURE 4 the tube 10' having an inlet or external end portion 12 is provided with an internal carrier 22', such as absorbent paper, for a color-change indicator. In FIG- URE 4 the carrier 22 is molded within the tube wall between the outer surface 24 and the inner surface 26 of the tube and one end 43 of the carrier 22 projects inwardly through the inner wall 26' to provide a wick whereby when body uids are drawn upwardly from the distal end to the zone adjacent the color-change indicator carrier 22', the indicator carrier 22' is wetted by wicking action. This form of the invention may also be provided with capillary channels 40 as indicated in FIGURE 3 of the drawing.
Referring to FIGURE S of the drawing, a further form of the present invention is illustrated, wherein the medical-surgical tube 10" having an external end portion 12" is provided with a perforated zone 44 comprising a plurality of perforations 28 which provide for communication between the inner wall 26" and the outer wall 24 of the tube 10". An absorbent band or strip 22 is mounted about the zone of perforations 44 in contact with the outer surface 24 of the tube 10" and is maintained in said stated relationship by a plastic, metal or the like sleeve 46 which may be heat sealed, cemented or frictionally maintained in its illustrated relationship on the outer surface of the tube 10". This form of the invention may also be provided with capillary or wicking channels as discussed with reference to FIGURE 3 of the drawing. In the form of the invention illustrated in FIG- UR-E 5, if the ring or band 46 is frictionally maintained in its illustrated relationship to the perforate zone 44 and the absorbent carrier 22" for the color-change indicator, the absorbent band 22" may be readily replaced after each use.
From the foregoing description, taken in consideration with the drawings, it will be seen that the present invention fully accomplishes the aims and objects hereinbefore set forth. While the invention has been particularly described with reference to the stomach tube, the invention has other uses for example, the urine of a healthy person has a known range of pH values and a doctor or technician can readily observe the pI-I condition of the urine during catheter draining thereof through the use of the present invention,
1. A medical-surgical tube having an internal end portion adapted to be inserted within a body cavity and an external end portion adapted to remain outside the body, a color-change acid-base indicator carrier means on the tube and located adjacent the outlet end portion of the tube, and means providing liquid communication between the inner wall of the tube and said indicator carrier means.
2. The invention 'clened in claim 1 wherein said indicator carrier means comprises a piece of absorbent material and an indicator absorbed thereon.
3. The invention defined in claim 2 wherein the indicator absorbed on the absorbent material comprises litmus or phenolphthalein.
4. A medical-surgical tube having Van internal end portion adapted to be inserted within a body and an external end portion adapted to remain outside the body, a color-change indicator carrier means on the tube and located adjacent the external end portion of the tube, an indicator absorbed on said carrier means, means providing liquid communication between the internal wall of the tube and the indicator absorbed on the indicator carrier means.
5. The invention defined in claim 4 wherein the indicator carrier means comprises an absorbent paper band formed within the tube and the means providing liquid communication between the internal wall of the tube and said indicator carrier means comprises a plurality of openings extending from the indicator carrier means through the inner wall of the tube in the zone of the indicator carrier means.
6. The invention defined in claim 1' wherein said indicator carrier means comprises a piece of absorbent paper one edge of which is maintained in uid contact with a portion of the inner wall of said tube.
7. The invention defined in claim 1 wherein the indicator carrier means comprises a band of absorbent material extending about a portion of the outer surface of the tube, a protective band extends over said absorbent carrier, and a zone of perforations extends between the inner surface of said absorbent carrier and the interior of said tube.
References Cited UNITED STATES PATENTS 2,567,445 9/ 1951 Parker 116-114 X 2,918,893 12/1959 Norton 116-114 3,058,472 10/ 1962 Thornton 12S- 348 3,15 5,091 1 1/ 1964 Nissenbaum 128--2 FOREIGN PATENTS 519,368 2/ 1931 Germany. 241,199 1/ 1926 Great Britain.
DALTON L. TRULUCK, Primary Examiner.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2567445 *||Aug 21, 1946||Sep 11, 1951||Elizabeth W Parker||Method of measuring the ph of aqueous liquids, moist foodstuffs, and the like|
|US2918893 *||Nov 17, 1955||Dec 29, 1959||Clyde A Norton||Leakage indicator for liquid fuel systems|
|US3058472 *||Dec 9, 1958||Oct 16, 1962||Baxter Don Inc||Gastric tube|
|US3155091 *||Apr 30, 1963||Nov 3, 1964||Diagnosto Associates Ltd||Diagnostic device for the detection and location of the sites of internal anatomicalabnormalities|
|DE241199C *||Title not available|
|DE519368C *||Oct 6, 1929||Feb 26, 1931||Franz Schnurpfeil||Bodensaeurepruefer|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3426758 *||Oct 10, 1966||Feb 11, 1969||American Hospital Supply Corp||Medical catheter with balloon leakage indicator|
|US4046139 *||Aug 23, 1976||Sep 6, 1977||Bernard Horn||Medical temperature measuring device|
|US4275768 *||Jun 16, 1978||Jun 30, 1981||Riggs E Gray||Reinforced hose having embedded indicia strip|
|US4344439 *||Oct 20, 1980||Aug 17, 1982||Ulrico Jacobellis||Catheter for use in localizing the origin of idiopathic microscopic hematuria|
|US4381011 *||May 4, 1981||Apr 26, 1983||Somers 3Rd Lewis S||Enteral feeding apparatus and method|
|US4601724 *||May 29, 1984||Jul 22, 1986||Cordis Corporation||Manufacture of tubing assembly for drainage catheter|
|US4632119 *||Oct 23, 1985||Dec 30, 1986||University Of Health Sciences/The Chicago Medical School||Ambulatory esophageal pH monitor|
|US4655763 *||Apr 30, 1984||Apr 7, 1987||Nutrapack, Inc.||Testing and dispensing apparatus for an enteral feeding system|
|US4827944 *||Jul 22, 1987||May 9, 1989||Becton, Dickinson And Company||Body fluid sample collection tube composite|
|US4981470 *||Jun 21, 1989||Jan 1, 1991||Synectics Medical, Inc.||Intraesophageal catheter with pH sensor|
|US5005572 *||Jan 31, 1989||Apr 9, 1991||Brigham & Women's Hospital||CO2 indicator and the use thereof to evaluate placement of tracheal tubes|
|US5085216 *||Apr 12, 1991||Feb 4, 1992||Henley Jr Robert L||Nasogastric/nasointestinal enteral feeding tube and method for avoiding tracheobronchial misplacement|
|US5105812 *||Jul 25, 1990||Apr 21, 1992||Baylor College Of Medicine||Nasogastric tube with removable pH detector|
|US5166075 *||Apr 24, 1992||Nov 24, 1992||Nellcor Incorporated||Method for determining whether respiratory gas is present in a gaseous sample|
|US5179002 *||Apr 25, 1991||Jan 12, 1993||Nellcor Incorporated||Apparatus for determining whether respiratory gas is present in a gaseous sample|
|US5273029 *||Apr 30, 1992||Dec 28, 1993||Wilk Peter J||Endotracheal tube assembly and related method and obturator|
|US5334189 *||Jun 3, 1991||Aug 2, 1994||Wade Stephen E||Device for controlled diffusion of a chemical substance|
|US5375592 *||Apr 8, 1993||Dec 27, 1994||Kirk; Gilbert M.||Carbon dioxide detector and shield|
|US5411022 *||Jul 1, 1993||May 2, 1995||Mccue; Michael||Continuous pH monitoring system and method of using same|
|US5417657 *||Oct 6, 1993||May 23, 1995||Hauer; Carolyn||No-sepsis urinary drainage catheter|
|US5421325 *||Dec 28, 1993||Jun 6, 1995||Cinberg; James Z.||Endotracheal tube assembly and related method|
|US5438985 *||Jan 25, 1993||Aug 8, 1995||Synectics Medical, Incorporated||Ambulatory recording of the presence and activity of substances in gastro-intestinal compartments|
|US5468451 *||Jun 22, 1993||Nov 21, 1995||Minco Ab||Device for indicating the presence of carbon dioxide in a patient's exhaled air|
|US5477854 *||Sep 16, 1993||Dec 26, 1995||Synectics Medical, Inc.||System and method to monitor gastrointestinal Helicobacter pylori infection|
|US5477860 *||Nov 5, 1992||Dec 26, 1995||Synectics Medical, Inc.||Catheter for measuring respiration and respiratory effort|
|US5479935 *||Oct 21, 1993||Jan 2, 1996||Synectics Medical, Inc.||Ambulatory reflux monitoring system|
|US5507289 *||Mar 23, 1994||Apr 16, 1996||Synectics Medical, Inc.||System and method to diagnose bacterial growth|
|US5517985 *||Nov 2, 1994||May 21, 1996||Kirk; Gilbert M.||Carbon dioxide detector and shield|
|US5551425 *||Jan 18, 1995||Sep 3, 1996||Synectics Medical, Inc.||Potential difference and perfusion pressure catheter|
|US5657759 *||Jan 6, 1995||Aug 19, 1997||Synectics Medical, Incorporated||Measurement of gastric emptying and gastrointestinal output|
|US5749358 *||Oct 10, 1996||May 12, 1998||Nellcor Puritan Bennett Incorporated||Resuscitator bag exhaust port with CO2 indicator|
|US5810741 *||Dec 21, 1995||Sep 22, 1998||Synectics Medical Ab||Method of measuring respiration and respiratory effort using plural catheters|
|US5833625 *||Dec 19, 1995||Nov 10, 1998||Synectics Medical Ab||Ambulatory reflux monitoring system|
|US5891054 *||Sep 12, 1997||Apr 6, 1999||Saint Louis University||Method for determining feeding the tube location|
|US6033368 *||Mar 28, 1996||Mar 7, 2000||Nitromed, Inc.||Condensate colorimetric nitrogen oxide analyzer|
|US6132372 *||Apr 1, 1997||Oct 17, 2000||Synectics Medical, Incorporated||Measurement of gastric emptying and gastrointestinal output|
|US6153439 *||Aug 31, 1998||Nov 28, 2000||Johnson; Theodore D.||Method of analyzing body fluids|
|US6419634||Jan 31, 2000||Jul 16, 2002||Nitromed, Inc.||Condensate colorimetric nitrogen oxide analyzer|
|US6475145||May 17, 2000||Nov 5, 2002||Baymar, Inc.||Method and apparatus for detection of acid reflux|
|US6929008||Oct 8, 2002||Aug 16, 2005||Vital Signs, Inc.||Carbon dioxide indicating apparatus, particularly, disk-like carbon dioxide indicating apparatus|
|US7017578 *||Nov 4, 2004||Mar 28, 2006||Tresnak Rick J||Endotracheal tube system and method of use|
|US7066914||Mar 16, 2005||Jun 27, 2006||Bird Products Corporation||Catheter having a tip with an elongated collar|
|US7140370 *||Apr 21, 2004||Nov 28, 2006||Chrickemil, L.L.C.||Endotracheal tube system and method of use|
|US7575565 *||Aug 19, 2005||Aug 18, 2009||Cannuflow, Inc.||Extravasation minimization device|
|US7811276||Feb 20, 2009||Oct 12, 2010||Nellcor Puritan Bennett Llc||Medical sensor and technique for using the same|
|US7976518||Jul 12, 2011||Corpak Medsystems, Inc.||Tubing assembly and signal generator placement control device and method for use with catheter guidance systems|
|US7992561||Aug 9, 2011||Nellcor Puritan Bennett Llc||Carbon dioxide-sensing airway products and technique for using the same|
|US7993299||Aug 18, 2009||Aug 9, 2011||Cannuflow, Inc.||Extravasation minimization device|
|US8062221||Sep 30, 2005||Nov 22, 2011||Nellcor Puritan Bennett Llc||Sensor for tissue gas detection and technique for using the same|
|US8062234||Jun 23, 2005||Nov 22, 2011||University College Cardiff Consultants Limited||Ph sensor|
|US8109272||Sep 25, 2006||Feb 7, 2012||Nellcor Puritan Bennett Llc||Carbon dioxide-sensing airway products and technique for using the same|
|US8128574||Sep 25, 2006||Mar 6, 2012||Nellcor Puritan Bennett Llc||Carbon dioxide-sensing airway products and technique for using the same|
|US8328771 *||Dec 11, 2012||Roger Dillard Massengale||Method for fluid delivery and catheters for use with same|
|US8396524||Mar 12, 2013||Covidien Lp||Medical sensor and technique for using the same|
|US8420405||Apr 16, 2013||Covidien Lp||Carbon dioxide detector having borosilicate substrate|
|US8431087||Apr 30, 2013||Covidien Lp||Carbon dioxide detector having borosilicate substrate|
|US8431088||Apr 30, 2013||Covidien Lp||Carbon dioxide detector having borosilicate substrate|
|US8449834||Sep 25, 2006||May 28, 2013||Covidien Lp||Carbon dioxide detector having borosilicate substrate|
|US8454526||Sep 25, 2006||Jun 4, 2013||Covidien Lp||Carbon dioxide-sensing airway products and technique for using the same|
|US8597183||Dec 21, 2009||Dec 3, 2013||Pneumoflex Systems, Llc||Involuntary contraction induced pressure as a medical diagnostic tool using involuntary reflex cough test|
|US8597184||Sep 9, 2010||Dec 3, 2013||Pneumoflex Systems, Llc||Techniques for evaluating urinary stress incontinence and use of involuntary reflex cough as a medical diagnostic tool|
|US8602987||Dec 21, 2009||Dec 10, 2013||Pneumoflex Systems, Llc||Techniques for evaluating stress urinary incontinence (SUI) using involuntary reflex cough test|
|US8652066||Dec 8, 2006||Feb 18, 2014||Pneumoflex Systems, Llc||Involuntary contraction induced pressure as a medical diagnostic tool|
|US8690790||Oct 17, 2006||Apr 8, 2014||Pneumoflex Systems, Llc||Techniques for evaluating urinary stress incontinence|
|US8720445 *||Jun 13, 2008||May 13, 2014||Affirm Medical Technologies, Llc||Tracheal tube with colorimetric CO2 indicator|
|US8840550||Oct 22, 2013||Sep 23, 2014||Pneumoflex Systems, Llc||Involuntary contraction induced pressure as a medical diagnostic tool using involuntary reflex cough test|
|US8845533||Oct 22, 2013||Sep 30, 2014||Pneumoflex Systems, Llc||Techniques for evaluating urinary stress incontinence and use of involuntary reflex cough as a medical diagnostic tool|
|US8845534||Oct 23, 2013||Sep 30, 2014||Pneumoflex Systems, Llc||Techniques for evaluating stress urinary incontinence (SUI) using involuntary reflex cough test|
|US9011328||Sep 9, 2010||Apr 21, 2015||Pneumoflex Systems, Llc||Oral-esophageal-gastric device with esophageal cuff to reduce gastric reflux and/or emesis|
|US9028406||Sep 9, 2010||May 12, 2015||Pneumoflex Systems, Llc||Oral-esophageal-gastric device to diagnose reflux and/or emesis|
|US9028441||Sep 7, 2012||May 12, 2015||Corpak Medsystems, Inc.||Apparatus and method used with guidance system for feeding and suctioning|
|US9131956||Jun 2, 2011||Sep 15, 2015||Corpak Medsystems, Inc.||Tubing assembly and signal generator placement control device and method for use with catheter guidance systems|
|US9173602 *||Aug 20, 2012||Nov 3, 2015||Paul J. Gilbert||Fluid characteristic measurement|
|US9233236||Mar 25, 2013||Jan 12, 2016||Cannuflow, Inc.||Method of providing for the minimization of extravasation during arthroscopic surgery|
|US20040116899 *||Dec 16, 2002||Jun 17, 2004||Shaughnessy Michael C.||Bolus for non-occluding high flow enteral feeding tube|
|US20050159712 *||Mar 16, 2005||Jul 21, 2005||Erik Andersen||Catheter having a tip with an elongated collar|
|US20050235995 *||Apr 21, 2004||Oct 27, 2005||Tresnak Rick J||Endotracheal tube system and method of use|
|US20050235997 *||Nov 4, 2004||Oct 27, 2005||Tresnak Rick J||Endotracheal tube system and method of use|
|US20050235998 *||Apr 28, 2005||Oct 27, 2005||Tresnak Rick J||Endotracheal tube system and method of use|
|US20070060913 *||Aug 19, 2005||Mar 15, 2007||Cannuflow, Inc.||Extravasation minimization device|
|US20070083094 *||Mar 7, 2006||Apr 12, 2007||Colburn Joel C||Medical sensor and technique for using the same|
|US20070135736 *||Dec 8, 2006||Jun 14, 2007||Pneumoflex Systems Llc||Involuntary Contraction Induced Pressure as a Medical Diagnostic Tool|
|US20070238942 *||Jul 24, 2006||Oct 11, 2007||Esophamet Corp.||Apparatus and method for detecting gastroesophageal reflux disease (gerd)|
|US20070255090 *||Oct 17, 2006||Nov 1, 2007||Addington W R||Techniques for Evaluating Urinary Stress Incontinence|
|US20080072905 *||Sep 25, 2006||Mar 27, 2008||Baker Clark R||Carbon dioxide-sensing airway products and technique for using the same|
|US20080072913 *||Sep 25, 2006||Mar 27, 2008||Baker Clark R||Carbon dioxide-sensing airway products and technique for using the same|
|US20080075633 *||Sep 25, 2006||Mar 27, 2008||Rafael Ostrowski||Carbon dioxide detector having borosilicate substrate|
|US20080076993 *||Sep 27, 2006||Mar 27, 2008||Nellcor Puritan Bennett Incorporated||Medical sensor and technique for using the same|
|US20080077034 *||Sep 25, 2006||Mar 27, 2008||Baker Clark R||Carbon dioxide-sensing airway products and technique for using the same|
|US20080077036 *||Sep 25, 2006||Mar 27, 2008||Baker Clark R||Carbon dioxide-sensing airway products and technique for using the same|
|US20080078394 *||Sep 25, 2006||Apr 3, 2008||Rafael Ostrowski||Carbon dioxide detector having borosilicate substrate|
|US20080081003 *||Sep 25, 2006||Apr 3, 2008||Rafael Ostrowski||Carbon dioxide detector having borosilicate substrate|
|US20080083265 *||Sep 25, 2006||Apr 10, 2008||Rafael Ostrowski||Carbon dioxide detector having borosilicate substrate|
|US20080294069 *||Jun 23, 2005||Nov 27, 2008||University College Cardiff Consultants Limited||Ph Sensor|
|US20090095290 *||Jun 13, 2008||Apr 16, 2009||Brian Cain||Tracheal tube with colorimetric co2 indicator|
|US20090165801 *||Dec 18, 2008||Jul 2, 2009||Nellcor Puritan Bennett Llc||Carbon dioxide detector having an acrylic based substrate|
|US20090198182 *||Jun 29, 2005||Aug 6, 2009||Jms Co., Ltd.||Member For Catheter's Position Verification Having Color Change Indicator And Catheter Having The Member For Catheter's Position Verification|
|US20090246797 *||Feb 19, 2009||Oct 1, 2009||Nellcor Puritan Bennett Llc||Medical device for the assessment of internal organ tissue and technique for using the same|
|US20090306629 *||Dec 10, 2009||Cannuflow, Inc.||Extravasation Minimization Device|
|US20100137736 *||Dec 21, 2009||Jun 3, 2010||Pneumoflex Systems, Llc||Involuntary contraction induced pressure as a medical diagnostic tool using involuntary reflex cough test|
|US20100137737 *||Dec 21, 2009||Jun 3, 2010||Pneumoflex Systems, Llc||Techniques for evaluating stress urinary incontinence (sui) using involuntary reflex cough test|
|US20110040157 *||Sep 9, 2010||Feb 17, 2011||PNEUMOFLEX SYSTEMS, LLC, State of Incorporation:||Techniques for evaluating urinary stress incontinence and use of involuntary reflex cough as a medical diagnostic tool|
|US20110040211 *||Feb 17, 2011||Pneumoflex Systems, Llc||Oral-esophageal-gastric device to diagnose reflux and/or emesis|
|US20110046653 *||Feb 24, 2011||PNEUMOFLEX SYSTEMS, LLC, State of Incorporation: Florida||Oral-esophageal-gastric device with esophageal cuff to reduce gastric reflux and/or emesis|
|US20110077495 *||Mar 31, 2011||Gilbert Paul J||Detection indicator|
|US20110190731 *||Aug 4, 2011||I-Flow||Method for Fluid Delivery and Catheters for Use with Same|
|US20120316415 *||Dec 13, 2012||Paul J Gilbert||Fluid characteristic measurement|
|EP0251471A1 *||May 19, 1987||Jan 7, 1988||Vincent L. Vaillancourt||Naso-gastric intubation system|
|EP0300221A2 *||Jun 23, 1988||Jan 25, 1989||Becton Dickinson and Company||Body fluid sample collection tube composite|
|EP1774985A1 *||Jun 29, 2005||Apr 18, 2007||JMS Co., Ltd.||Member for catheter's position verification having color change indicator and catheter having the member for catheter's position verification|
|WO1990015572A1 *||Jun 15, 1990||Dec 27, 1990||Synetics Medical, Inc.||Intraesophageal catheter|
|WO1995011716A1 *||Oct 19, 1994||May 4, 1995||The Regents Of The University Of California||Integrated end tidal carbon dioxide monitor and endotracheal tube|
|WO2006000764A1 *||Jun 23, 2005||Jan 5, 2006||University College Cardiff Consultants Limited||Ph sensor|
|WO2007121119A2||Apr 6, 2007||Oct 25, 2007||Esophamet Corporation||Apparatus and method for detecting gastroesophageal reflux disease (gerd)|
|WO2012057725A1 *||Dec 7, 2010||May 3, 2012||Gilbert Paul J||Detection indicator|
|WO2013025993A1 *||Aug 17, 2012||Feb 21, 2013||Gilbert Paul J||Fluid characteristic measurement|
|U.S. Classification||600/581, 604/523, 600/584, 138/104, 137/559, 128/207.18, 116/206, 422/548|
|International Classification||A61M31/00, A61M25/00, A61J15/00|
|Cooperative Classification||A61M31/00, A61M25/00, A61J15/00, A61B5/14539|
|European Classification||A61B5/145J, A61M25/00, A61M31/00, A61J15/00|