US3373735A - Medical-surgical tube - Google Patents

Medical-surgical tube Download PDF

Info

Publication number
US3373735A
US3373735A US50011865A US3373735A US 3373735 A US3373735 A US 3373735A US 50011865 A US50011865 A US 50011865A US 3373735 A US3373735 A US 3373735A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
tube
indicator
end
means
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
John P Gallagher
Original Assignee
John P. Gallagher
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/145Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14539Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring pH
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00Feeding-tubes for therapeutic purposes
    • A61J15/0003Nasal or oral feeding-tubes, e.g. tube entering body through nose or mouth
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00Feeding-tubes for therapeutic purposes
    • A61J15/0026Parts, details or accessories for feeding-tubes
    • A61J15/008Sensor means, e.g. for sensing reflux, acidity or pressure
    • A61J15/0088Sensor means, e.g. for sensing reflux, acidity or pressure for sensing parameters related to the device
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M31/00Devices for introducing or retaining media, e.g. remedies, in cavities of the body
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8158With indicator, register, recorder, alarm or inspection means
    • Y10T137/8359Inspection means

Abstract

1,104,774. Body fluid testing device. J. P. GALLACHER. 11 Aug., 1966 [21 Oct., 1965], No. 35934/66. Heading B1X. [Also in Division A5] A liquid-testing device comprises a tube at one end portion of which is colour-change indicator means located in spaced relation with the internal surface of the tube. The tube includes means which provides liquid communication between the other end of the tube and the indicator means so that the indicator means may be exposed to, and thus may convey information relating to, liquid which initially is adjacent this other end portion of the tube. The indicator means may comprise an absorbent carrier, for example of paper, on which is absorbed a colour-change indicator; the indicator may be an acid-base colour-change indicator, for example litmus, phenolphthalein, methyl orange or phenol red. In the embodiment illustrated in Figure 5, the indicator means is in the form of an absorbent band 22" carrying a colour-change indicator and removably mounted on the outer wall surface 24" of the tube 10" at the end portion 12" thereof by means of a plastics or metal sleeve 46. The liquid communication means is provided by a plurality of perforations 28" formed in a zone 44 to extend through the wall of the tube from the internal wall surface 26" thereof to the indicator means; alternatively or in addition, the liquid communication may be provided by a plurality of capillary bores 40 (see Fig. 3) and/or by a channel filled with wicking material. In the embodiment of Figs. 2, 3 and 4 (Figs. 2 and 4, not shown), the absorbent band 22 is mounted between the inner and outer wall surfaces 26 and 24 of the tube. The liquid-testing device is of especial use in medical or surgical procedures.

Description

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,

I claim:

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.

Claims (1)

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..
US3373735A 1965-10-21 1965-10-21 Medical-surgical tube Expired - Lifetime US3373735A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3373735A US3373735A (en) 1965-10-21 1965-10-21 Medical-surgical tube

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US3373735A US3373735A (en) 1965-10-21 1965-10-21 Medical-surgical tube
GB3593466A GB1104774A (en) 1965-10-21 1966-08-11 An improved medical-surgical tube
DE19661491731D DE1491731B (en) 1965-10-21 1966-09-21 catheter

Publications (1)

Publication Number Publication Date
US3373735A true US3373735A (en) 1968-03-19

Family

ID=23988109

Family Applications (1)

Application Number Title Priority Date Filing Date
US3373735A Expired - Lifetime US3373735A (en) 1965-10-21 1965-10-21 Medical-surgical tube

Country Status (3)

Country Link
US (1) US3373735A (en)
DE (1) DE1491731B (en)
GB (1) GB1104774A (en)

Cited By (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426758A (en) * 1966-10-10 1969-02-11 American Hospital Supply Corp Medical catheter with balloon leakage indicator
US4046139A (en) * 1976-08-23 1977-09-06 Bernard Horn Medical temperature measuring device
US4275768A (en) * 1978-06-16 1981-06-30 Riggs E Gray Reinforced hose having embedded indicia strip
US4344439A (en) * 1980-10-20 1982-08-17 Ulrico Jacobellis Catheter for use in localizing the origin of idiopathic microscopic hematuria
US4381011A (en) * 1981-05-04 1983-04-26 Somers 3Rd Lewis S Enteral feeding apparatus and method
US4601724A (en) * 1984-05-29 1986-07-22 Cordis Corporation Manufacture of tubing assembly for drainage catheter
US4632119A (en) * 1985-10-23 1986-12-30 University Of Health Sciences/The Chicago Medical School Ambulatory esophageal pH monitor
US4655763A (en) * 1984-04-30 1987-04-07 Nutrapack, Inc. Testing and dispensing apparatus for an enteral feeding system
EP0251471A1 (en) * 1986-06-02 1988-01-07 Vincent L. Vaillancourt Naso-gastric intubation system
EP0300221A2 (en) * 1987-07-22 1989-01-25 Becton Dickinson and Company Body fluid sample collection tube composite
WO1990015572A1 (en) * 1989-06-21 1990-12-27 Synetics Medical, Inc. Intraesophageal catheter
US5005572A (en) * 1988-02-26 1991-04-09 Brigham & Women's Hospital CO2 indicator and the use thereof to evaluate placement of tracheal tubes
US5085216A (en) * 1989-07-25 1992-02-04 Henley Jr Robert L Nasogastric/nasointestinal enteral feeding tube and method for avoiding tracheobronchial misplacement
US5105812A (en) * 1990-07-25 1992-04-21 Baylor College Of Medicine Nasogastric tube with removable pH detector
US5166075A (en) * 1986-08-13 1992-11-24 Nellcor Incorporated Method for determining whether respiratory gas is present in a gaseous sample
US5179002A (en) * 1986-08-13 1993-01-12 Nellcor Incorporated Apparatus for determining whether respiratory gas is present in a gaseous sample
US5273029A (en) * 1992-04-30 1993-12-28 Wilk Peter J Endotracheal tube assembly and related method and obturator
US5334189A (en) * 1991-06-03 1994-08-02 Wade Stephen E Device for controlled diffusion of a chemical substance
US5375592A (en) * 1993-04-08 1994-12-27 Kirk; Gilbert M. Carbon dioxide detector and shield
US5411022A (en) * 1993-07-01 1995-05-02 Mccue; Michael Continuous pH monitoring system and method of using same
WO1995011716A1 (en) * 1993-10-26 1995-05-04 The Regents Of The University Of California Integrated end tidal carbon dioxide monitor and endotracheal tube
US5417657A (en) * 1993-10-06 1995-05-23 Hauer; Carolyn No-sepsis urinary drainage catheter
US5421325A (en) * 1992-04-30 1995-06-06 Cinberg; James Z. Endotracheal tube assembly and related method
US5438985A (en) * 1993-01-25 1995-08-08 Synectics Medical, Incorporated Ambulatory recording of the presence and activity of substances in gastro-intestinal compartments
US5468451A (en) * 1992-06-29 1995-11-21 Minco Ab Device for indicating the presence of carbon dioxide in a patient's exhaled air
US5477854A (en) * 1993-09-16 1995-12-26 Synectics Medical, Inc. System and method to monitor gastrointestinal Helicobacter pylori infection
US5477860A (en) * 1992-11-05 1995-12-26 Synectics Medical, Inc. Catheter for measuring respiration and respiratory effort
US5479935A (en) * 1993-10-21 1996-01-02 Synectics Medical, Inc. Ambulatory reflux monitoring system
US5507289A (en) * 1993-09-16 1996-04-16 Synectics Medical, Inc. System and method to diagnose bacterial growth
US5551425A (en) * 1993-05-13 1996-09-03 Synectics Medical, Inc. Potential difference and perfusion pressure catheter
US5657759A (en) * 1993-05-13 1997-08-19 Synectics Medical, Incorporated Measurement of gastric emptying and gastrointestinal output
US5749358A (en) * 1996-10-10 1998-05-12 Nellcor Puritan Bennett Incorporated Resuscitator bag exhaust port with CO2 indicator
US5810741A (en) * 1992-11-05 1998-09-22 Synectics Medical Ab Method of measuring respiration and respiratory effort using plural catheters
US5833625A (en) * 1993-10-21 1998-11-10 Synectics Medical Ab Ambulatory reflux monitoring system
US5891054A (en) * 1997-09-12 1999-04-06 Saint Louis University Method for determining feeding the tube location
US6033368A (en) * 1996-03-28 2000-03-07 Nitromed, Inc. Condensate colorimetric nitrogen oxide analyzer
US6153439A (en) * 1995-11-20 2000-11-28 Johnson; Theodore D. Method of analyzing body fluids
US6475145B1 (en) 2000-05-17 2002-11-05 Baymar, Inc. Method and apparatus for detection of acid reflux
US20040116899A1 (en) * 2002-12-16 2004-06-17 Shaughnessy Michael C. Bolus for non-occluding high flow enteral feeding tube
US20050159712A1 (en) * 2000-07-12 2005-07-21 Erik Andersen Catheter having a tip with an elongated collar
US6929008B2 (en) 2002-10-08 2005-08-16 Vital Signs, Inc. Carbon dioxide indicating apparatus, particularly, disk-like carbon dioxide indicating apparatus
US20050235995A1 (en) * 2004-04-21 2005-10-27 Tresnak Rick J Endotracheal tube system and method of use
US20050235997A1 (en) * 2004-04-21 2005-10-27 Tresnak Rick J Endotracheal tube system and method of use
US20050235998A1 (en) * 2004-04-21 2005-10-27 Tresnak Rick J Endotracheal tube system and method of use
WO2006000764A1 (en) * 2004-06-24 2006-01-05 University College Cardiff Consultants Limited Ph sensor
US20070060913A1 (en) * 2005-08-19 2007-03-15 Cannuflow, Inc. Extravasation minimization device
US20070083094A1 (en) * 2005-10-11 2007-04-12 Colburn Joel C Medical sensor and technique for using the same
EP1774985A1 (en) * 2004-06-30 2007-04-18 JMS Co., Ltd. Member for catheter's position verification having color change indicator and catheter having the member for catheter's position verification
US20070135736A1 (en) * 2005-12-09 2007-06-14 Pneumoflex Systems Llc Involuntary Contraction Induced Pressure as a Medical Diagnostic Tool
US20070238942A1 (en) * 2006-04-10 2007-10-11 Esophamet Corp. Apparatus and method for detecting gastroesophageal reflux disease (gerd)
US20070255090A1 (en) * 2005-10-18 2007-11-01 Addington W R Techniques for Evaluating Urinary Stress Incontinence
US20080077036A1 (en) * 2006-09-25 2008-03-27 Baker Clark R Carbon dioxide-sensing airway products and technique for using the same
US20080075633A1 (en) * 2006-09-25 2008-03-27 Rafael Ostrowski Carbon dioxide detector having borosilicate substrate
US20080076993A1 (en) * 2006-09-27 2008-03-27 Nellcor Puritan Bennett Incorporated Medical sensor and technique for using the same
US20080081003A1 (en) * 2006-09-25 2008-04-03 Rafael Ostrowski Carbon dioxide detector having borosilicate substrate
US20080078394A1 (en) * 2006-09-25 2008-04-03 Rafael Ostrowski Carbon dioxide detector having borosilicate substrate
US20080083265A1 (en) * 2006-09-25 2008-04-10 Rafael Ostrowski Carbon dioxide detector having borosilicate substrate
US20090095290A1 (en) * 2007-06-15 2009-04-16 Brian Cain Tracheal tube with colorimetric co2 indicator
US20090165801A1 (en) * 2007-12-31 2009-07-02 Nellcor Puritan Bennett Llc Carbon dioxide detector having an acrylic based substrate
US20090246797A1 (en) * 2008-03-28 2009-10-01 Nellcor Puritan Bennett Llc Medical device for the assessment of internal organ tissue and technique for using the same
US20100137737A1 (en) * 2005-10-18 2010-06-03 Pneumoflex Systems, Llc Techniques for evaluating stress urinary incontinence (sui) using involuntary reflex cough test
US20100137736A1 (en) * 2005-12-09 2010-06-03 Pneumoflex Systems, Llc Involuntary contraction induced pressure as a medical diagnostic tool using involuntary reflex cough test
US7811276B2 (en) 2005-11-10 2010-10-12 Nellcor Puritan Bennett Llc Medical sensor and technique for using the same
US20110040157A1 (en) * 2005-10-18 2011-02-17 PNEUMOFLEX SYSTEMS, LLC, State of Incorporation: Techniques for evaluating urinary stress incontinence and use of involuntary reflex cough as a medical diagnostic tool
US20110040211A1 (en) * 2005-10-18 2011-02-17 Pneumoflex Systems, Llc Oral-esophageal-gastric device to diagnose reflux and/or emesis
US20110046653A1 (en) * 2005-10-18 2011-02-24 PNEUMOFLEX SYSTEMS, LLC, State of Incorporation: Florida Oral-esophageal-gastric device with esophageal cuff to reduce gastric reflux and/or emesis
US20110077495A1 (en) * 2005-02-08 2011-03-31 Gilbert Paul J Detection indicator
US7976518B2 (en) 2005-01-13 2011-07-12 Corpak Medsystems, Inc. Tubing assembly and signal generator placement control device and method for use with catheter guidance systems
US20110190731A1 (en) * 1999-07-19 2011-08-04 I-Flow Method for Fluid Delivery and Catheters for Use with Same
US8062221B2 (en) 2005-09-30 2011-11-22 Nellcor Puritan Bennett Llc Sensor for tissue gas detection and technique for using the same
US20120316415A1 (en) * 2005-02-08 2012-12-13 Paul J Gilbert Fluid characteristic measurement
GB2499319A (en) * 2012-02-06 2013-08-14 Cme Uk Holdings Ltd In-line pH indicator for feeding tube system
US9028441B2 (en) 2011-09-08 2015-05-12 Corpak Medsystems, Inc. Apparatus and method used with guidance system for feeding and suctioning
US20150168244A1 (en) * 2013-12-12 2015-06-18 Right Biometrics Fluid characteristic indicator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE241199C (en) *
DE519368C (en) * 1929-10-06 1931-02-26 Franz Schnurpfeil Bodensaeurepruefer
US2567445A (en) * 1946-08-21 1951-09-11 Elizabeth W Parker Method of measuring the ph of aqueous liquids, moist foodstuffs, and the like
US2918893A (en) * 1955-11-17 1959-12-29 Clyde A Norton Leakage indicator for liquid fuel systems
US3058472A (en) * 1958-12-09 1962-10-16 Baxter Don Inc Gastric tube
US3155091A (en) * 1963-04-30 1964-11-03 Diagnosto Associates Ltd Diagnostic device for the detection and location of the sites of internal anatomicalabnormalities

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE215350C (en) *

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE241199C (en) *
DE519368C (en) * 1929-10-06 1931-02-26 Franz Schnurpfeil Bodensaeurepruefer
US2567445A (en) * 1946-08-21 1951-09-11 Elizabeth W Parker Method of measuring the ph of aqueous liquids, moist foodstuffs, and the like
US2918893A (en) * 1955-11-17 1959-12-29 Clyde A Norton Leakage indicator for liquid fuel systems
US3058472A (en) * 1958-12-09 1962-10-16 Baxter Don Inc Gastric tube
US3155091A (en) * 1963-04-30 1964-11-03 Diagnosto Associates Ltd Diagnostic device for the detection and location of the sites of internal anatomicalabnormalities

Cited By (126)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426758A (en) * 1966-10-10 1969-02-11 American Hospital Supply Corp Medical catheter with balloon leakage indicator
US4046139A (en) * 1976-08-23 1977-09-06 Bernard Horn Medical temperature measuring device
US4275768A (en) * 1978-06-16 1981-06-30 Riggs E Gray Reinforced hose having embedded indicia strip
US4344439A (en) * 1980-10-20 1982-08-17 Ulrico Jacobellis Catheter for use in localizing the origin of idiopathic microscopic hematuria
US4381011A (en) * 1981-05-04 1983-04-26 Somers 3Rd Lewis S Enteral feeding apparatus and method
US4655763A (en) * 1984-04-30 1987-04-07 Nutrapack, Inc. Testing and dispensing apparatus for an enteral feeding system
US4601724A (en) * 1984-05-29 1986-07-22 Cordis Corporation Manufacture of tubing assembly for drainage catheter
US4632119A (en) * 1985-10-23 1986-12-30 University Of Health Sciences/The Chicago Medical School Ambulatory esophageal pH monitor
EP0251471A1 (en) * 1986-06-02 1988-01-07 Vincent L. Vaillancourt Naso-gastric intubation system
US5179002A (en) * 1986-08-13 1993-01-12 Nellcor Incorporated Apparatus for determining whether respiratory gas is present in a gaseous sample
US5166075A (en) * 1986-08-13 1992-11-24 Nellcor Incorporated Method for determining whether respiratory gas is present in a gaseous sample
EP0300221A2 (en) * 1987-07-22 1989-01-25 Becton Dickinson and Company Body fluid sample collection tube composite
EP0300221A3 (en) * 1987-07-22 1989-12-27 Becton Dickinson And Company Body fluid sample collection tube composite
US4827944A (en) * 1987-07-22 1989-05-09 Becton, Dickinson And Company Body fluid sample collection tube composite
US5005572A (en) * 1988-02-26 1991-04-09 Brigham & Women's Hospital CO2 indicator and the use thereof to evaluate placement of tracheal tubes
US4981470A (en) * 1989-06-21 1991-01-01 Synectics Medical, Inc. Intraesophageal catheter with pH sensor
WO1990015572A1 (en) * 1989-06-21 1990-12-27 Synetics Medical, Inc. Intraesophageal catheter
US5085216A (en) * 1989-07-25 1992-02-04 Henley Jr Robert L Nasogastric/nasointestinal enteral feeding tube and method for avoiding tracheobronchial misplacement
US5105812A (en) * 1990-07-25 1992-04-21 Baylor College Of Medicine Nasogastric tube with removable pH detector
US5334189A (en) * 1991-06-03 1994-08-02 Wade Stephen E Device for controlled diffusion of a chemical substance
US5273029A (en) * 1992-04-30 1993-12-28 Wilk Peter J Endotracheal tube assembly and related method and obturator
US5421325A (en) * 1992-04-30 1995-06-06 Cinberg; James Z. Endotracheal tube assembly and related method
US5468451A (en) * 1992-06-29 1995-11-21 Minco Ab Device for indicating the presence of carbon dioxide in a patient's exhaled air
US5477860A (en) * 1992-11-05 1995-12-26 Synectics Medical, Inc. Catheter for measuring respiration and respiratory effort
US5810741A (en) * 1992-11-05 1998-09-22 Synectics Medical Ab Method of measuring respiration and respiratory effort using plural catheters
US5438985A (en) * 1993-01-25 1995-08-08 Synectics Medical, Incorporated Ambulatory recording of the presence and activity of substances in gastro-intestinal compartments
US5375592A (en) * 1993-04-08 1994-12-27 Kirk; Gilbert M. Carbon dioxide detector and shield
US5517985A (en) * 1993-04-08 1996-05-21 Kirk; Gilbert M. Carbon dioxide detector and shield
US5551425A (en) * 1993-05-13 1996-09-03 Synectics Medical, Inc. Potential difference and perfusion pressure catheter
US6132372A (en) * 1993-05-13 2000-10-17 Synectics Medical, Incorporated Measurement of gastric emptying and gastrointestinal output
US5657759A (en) * 1993-05-13 1997-08-19 Synectics Medical, Incorporated Measurement of gastric emptying and gastrointestinal output
US5411022A (en) * 1993-07-01 1995-05-02 Mccue; Michael Continuous pH monitoring system and method of using same
US5477854A (en) * 1993-09-16 1995-12-26 Synectics Medical, Inc. System and method to monitor gastrointestinal Helicobacter pylori infection
US5507289A (en) * 1993-09-16 1996-04-16 Synectics Medical, Inc. System and method to diagnose bacterial growth
US5417657A (en) * 1993-10-06 1995-05-23 Hauer; Carolyn No-sepsis urinary drainage catheter
US5479935A (en) * 1993-10-21 1996-01-02 Synectics Medical, Inc. Ambulatory reflux monitoring system
US5833625A (en) * 1993-10-21 1998-11-10 Synectics Medical Ab Ambulatory reflux monitoring system
WO1995011716A1 (en) * 1993-10-26 1995-05-04 The Regents Of The University Of California Integrated end tidal carbon dioxide monitor and endotracheal tube
US6153439A (en) * 1995-11-20 2000-11-28 Johnson; Theodore D. Method of analyzing body fluids
US6033368A (en) * 1996-03-28 2000-03-07 Nitromed, Inc. Condensate colorimetric nitrogen oxide analyzer
US6419634B1 (en) 1996-03-28 2002-07-16 Nitromed, Inc. Condensate colorimetric nitrogen oxide analyzer
US5749358A (en) * 1996-10-10 1998-05-12 Nellcor Puritan Bennett Incorporated Resuscitator bag exhaust port with CO2 indicator
US5891054A (en) * 1997-09-12 1999-04-06 Saint Louis University Method for determining feeding the tube location
US20110190731A1 (en) * 1999-07-19 2011-08-04 I-Flow Method for Fluid Delivery and Catheters for Use with Same
US8328771B2 (en) * 1999-07-19 2012-12-11 Roger Dillard Massengale Method for fluid delivery and catheters for use with same
US6475145B1 (en) 2000-05-17 2002-11-05 Baymar, Inc. Method and apparatus for detection of acid reflux
US7066914B2 (en) 2000-07-12 2006-06-27 Bird Products Corporation Catheter having a tip with an elongated collar
US20050159712A1 (en) * 2000-07-12 2005-07-21 Erik Andersen Catheter having a tip with an elongated collar
US6929008B2 (en) 2002-10-08 2005-08-16 Vital Signs, Inc. Carbon dioxide indicating apparatus, particularly, disk-like carbon dioxide indicating apparatus
US20040116899A1 (en) * 2002-12-16 2004-06-17 Shaughnessy Michael C. Bolus for non-occluding high flow enteral feeding tube
US20050235997A1 (en) * 2004-04-21 2005-10-27 Tresnak Rick J Endotracheal tube system and method of use
US20050235998A1 (en) * 2004-04-21 2005-10-27 Tresnak Rick J Endotracheal tube system and method of use
US7017578B2 (en) * 2004-04-21 2006-03-28 Tresnak Rick J Endotracheal tube system and method of use
US20050235995A1 (en) * 2004-04-21 2005-10-27 Tresnak Rick J Endotracheal tube system and method of use
US7140370B2 (en) * 2004-04-21 2006-11-28 Chrickemil, L.L.C. Endotracheal tube system and method of use
US20080294069A1 (en) * 2004-06-24 2008-11-27 University College Cardiff Consultants Limited Ph Sensor
WO2006000764A1 (en) * 2004-06-24 2006-01-05 University College Cardiff Consultants Limited Ph sensor
US8062234B2 (en) 2004-06-24 2011-11-22 University College Cardiff Consultants Limited Ph sensor
EP1774985A1 (en) * 2004-06-30 2007-04-18 JMS Co., Ltd. Member for catheter's position verification having color change indicator and catheter having the member for catheter's position verification
EP1774985A4 (en) * 2004-06-30 2009-06-03 Jms Co Ltd Member for catheter's position verification having color change indicator and catheter having the member for catheter's position verification
US20090198182A1 (en) * 2004-06-30 2009-08-06 Jms Co., Ltd. Member For Catheter's Position Verification Having Color Change Indicator And Catheter Having The Member For Catheter's Position Verification
US9131956B2 (en) 2005-01-13 2015-09-15 Corpak Medsystems, Inc. Tubing assembly and signal generator placement control device and method for use with catheter guidance systems
US7976518B2 (en) 2005-01-13 2011-07-12 Corpak Medsystems, Inc. Tubing assembly and signal generator placement control device and method for use with catheter guidance systems
US9579488B2 (en) 2005-01-13 2017-02-28 Corpak Medsystems, Inc. Tubing assembly and signal generator placement control device and method for use with catheter guidance systems
US9889277B2 (en) 2005-01-13 2018-02-13 Avent, Inc. Tubing assembly and signal generator placement control device and method for use with catheter guidance systems
US9173602B2 (en) * 2005-02-08 2015-11-03 Paul J. Gilbert Fluid characteristic measurement
US20110077495A1 (en) * 2005-02-08 2011-03-31 Gilbert Paul J Detection indicator
US20120316415A1 (en) * 2005-02-08 2012-12-13 Paul J Gilbert Fluid characteristic measurement
US20090306629A1 (en) * 2005-08-19 2009-12-10 Cannuflow, Inc. Extravasation Minimization Device
US7993299B2 (en) 2005-08-19 2011-08-09 Cannuflow, Inc. Extravasation minimization device
US20070060913A1 (en) * 2005-08-19 2007-03-15 Cannuflow, Inc. Extravasation minimization device
US9233236B2 (en) 2005-08-19 2016-01-12 Cannuflow, Inc. Method of providing for the minimization of extravasation during arthroscopic surgery
US7575565B2 (en) * 2005-08-19 2009-08-18 Cannuflow, Inc. Extravasation minimization device
US8062221B2 (en) 2005-09-30 2011-11-22 Nellcor Puritan Bennett Llc Sensor for tissue gas detection and technique for using the same
US20070083094A1 (en) * 2005-10-11 2007-04-12 Colburn Joel C Medical sensor and technique for using the same
US8597184B2 (en) 2005-10-18 2013-12-03 Pneumoflex Systems, Llc Techniques for evaluating urinary stress incontinence and use of involuntary reflex cough as a medical diagnostic tool
US8845533B2 (en) 2005-10-18 2014-09-30 Pneumoflex Systems, Llc Techniques for evaluating urinary stress incontinence and use of involuntary reflex cough as a medical diagnostic tool
US9011328B2 (en) 2005-10-18 2015-04-21 Pneumoflex Systems, Llc Oral-esophageal-gastric device with esophageal cuff to reduce gastric reflux and/or emesis
US9028406B2 (en) 2005-10-18 2015-05-12 Pneumoflex Systems, Llc Oral-esophageal-gastric device to diagnose reflux and/or emesis
US8690790B2 (en) 2005-10-18 2014-04-08 Pneumoflex Systems, Llc Techniques for evaluating urinary stress incontinence
US20070255090A1 (en) * 2005-10-18 2007-11-01 Addington W R Techniques for Evaluating Urinary Stress Incontinence
US20110040157A1 (en) * 2005-10-18 2011-02-17 PNEUMOFLEX SYSTEMS, LLC, State of Incorporation: Techniques for evaluating urinary stress incontinence and use of involuntary reflex cough as a medical diagnostic tool
US20110040211A1 (en) * 2005-10-18 2011-02-17 Pneumoflex Systems, Llc Oral-esophageal-gastric device to diagnose reflux and/or emesis
US20110046653A1 (en) * 2005-10-18 2011-02-24 PNEUMOFLEX SYSTEMS, LLC, State of Incorporation: Florida Oral-esophageal-gastric device with esophageal cuff to reduce gastric reflux and/or emesis
US8602987B2 (en) 2005-10-18 2013-12-10 Pneumoflex Systems, Llc Techniques for evaluating stress urinary incontinence (SUI) using involuntary reflex cough test
US8845534B2 (en) 2005-10-18 2014-09-30 Pneumoflex Systems, Llc Techniques for evaluating stress urinary incontinence (SUI) using involuntary reflex cough test
US20100137737A1 (en) * 2005-10-18 2010-06-03 Pneumoflex Systems, Llc Techniques for evaluating stress urinary incontinence (sui) using involuntary reflex cough test
US7811276B2 (en) 2005-11-10 2010-10-12 Nellcor Puritan Bennett Llc Medical sensor and technique for using the same
US8597183B2 (en) 2005-12-09 2013-12-03 Pneumoflex Systems, Llc Involuntary contraction induced pressure as a medical diagnostic tool using involuntary reflex cough test
US20070135736A1 (en) * 2005-12-09 2007-06-14 Pneumoflex Systems Llc Involuntary Contraction Induced Pressure as a Medical Diagnostic Tool
US20100137736A1 (en) * 2005-12-09 2010-06-03 Pneumoflex Systems, Llc Involuntary contraction induced pressure as a medical diagnostic tool using involuntary reflex cough test
US8652066B2 (en) 2005-12-09 2014-02-18 Pneumoflex Systems, Llc Involuntary contraction induced pressure as a medical diagnostic tool
US8840550B2 (en) 2005-12-09 2014-09-23 Pneumoflex Systems, Llc Involuntary contraction induced pressure as a medical diagnostic tool using involuntary reflex cough test
US20070238942A1 (en) * 2006-04-10 2007-10-11 Esophamet Corp. Apparatus and method for detecting gastroesophageal reflux disease (gerd)
WO2007121119A2 (en) 2006-04-10 2007-10-25 Esophamet Corporation Apparatus and method for detecting gastroesophageal reflux disease (gerd)
US20080077034A1 (en) * 2006-09-25 2008-03-27 Baker Clark R Carbon dioxide-sensing airway products and technique for using the same
US7992561B2 (en) 2006-09-25 2011-08-09 Nellcor Puritan Bennett Llc Carbon dioxide-sensing airway products and technique for using the same
US20080072905A1 (en) * 2006-09-25 2008-03-27 Baker Clark R Carbon dioxide-sensing airway products and technique for using the same
US8420405B2 (en) 2006-09-25 2013-04-16 Covidien Lp Carbon dioxide detector having borosilicate substrate
US8431087B2 (en) 2006-09-25 2013-04-30 Covidien Lp Carbon dioxide detector having borosilicate substrate
US8431088B2 (en) 2006-09-25 2013-04-30 Covidien Lp Carbon dioxide detector having borosilicate substrate
US8449834B2 (en) 2006-09-25 2013-05-28 Covidien Lp Carbon dioxide detector having borosilicate substrate
US8454526B2 (en) 2006-09-25 2013-06-04 Covidien Lp Carbon dioxide-sensing airway products and technique for using the same
US20080077036A1 (en) * 2006-09-25 2008-03-27 Baker Clark R Carbon dioxide-sensing airway products and technique for using the same
US20080072913A1 (en) * 2006-09-25 2008-03-27 Baker Clark R Carbon dioxide-sensing airway products and technique for using the same
US8128574B2 (en) 2006-09-25 2012-03-06 Nellcor Puritan Bennett Llc Carbon dioxide-sensing airway products and technique for using the same
US8109272B2 (en) 2006-09-25 2012-02-07 Nellcor Puritan Bennett Llc Carbon dioxide-sensing airway products and technique for using the same
US20080075633A1 (en) * 2006-09-25 2008-03-27 Rafael Ostrowski Carbon dioxide detector having borosilicate substrate
US20080083265A1 (en) * 2006-09-25 2008-04-10 Rafael Ostrowski Carbon dioxide detector having borosilicate substrate
US20080081003A1 (en) * 2006-09-25 2008-04-03 Rafael Ostrowski Carbon dioxide detector having borosilicate substrate
US20080078394A1 (en) * 2006-09-25 2008-04-03 Rafael Ostrowski Carbon dioxide detector having borosilicate substrate
US8396524B2 (en) 2006-09-27 2013-03-12 Covidien Lp Medical sensor and technique for using the same
US20080076993A1 (en) * 2006-09-27 2008-03-27 Nellcor Puritan Bennett Incorporated Medical sensor and technique for using the same
US8720445B2 (en) * 2007-06-15 2014-05-13 Affirm Medical Technologies, Llc Tracheal tube with colorimetric CO2 indicator
US20090095290A1 (en) * 2007-06-15 2009-04-16 Brian Cain Tracheal tube with colorimetric co2 indicator
US20090165801A1 (en) * 2007-12-31 2009-07-02 Nellcor Puritan Bennett Llc Carbon dioxide detector having an acrylic based substrate
US20090246797A1 (en) * 2008-03-28 2009-10-01 Nellcor Puritan Bennett Llc Medical device for the assessment of internal organ tissue and technique for using the same
WO2012057725A1 (en) * 2010-10-29 2012-05-03 Gilbert Paul J Detection indicator
WO2013025993A1 (en) * 2011-08-18 2013-02-21 Gilbert Paul J Fluid characteristic measurement
US9028441B2 (en) 2011-09-08 2015-05-12 Corpak Medsystems, Inc. Apparatus and method used with guidance system for feeding and suctioning
US9918907B2 (en) 2011-09-08 2018-03-20 Avent, Inc. Method for electromagnetic guidance of feeding and suctioning tube assembly
US9726682B2 (en) 2012-02-06 2017-08-08 Cme Uk (Holdings) Limited Apparatus for administering fluid to a medical tube
GB2499319B (en) * 2012-02-06 2017-12-27 Ngpod Global Ltd Apparatus for administering fluid to a medical tube
GB2499319A (en) * 2012-02-06 2013-08-14 Cme Uk Holdings Ltd In-line pH indicator for feeding tube system
US9658125B2 (en) * 2013-12-12 2017-05-23 Right Biometrics Fluid characteristic indicator
US20150168244A1 (en) * 2013-12-12 2015-06-18 Right Biometrics Fluid characteristic indicator

Also Published As

Publication number Publication date Type
DE1491731B (en) 1970-03-26 application
GB1104774A (en) 1968-02-28 application

Similar Documents

Publication Publication Date Title
US3583391A (en) Medical instrument with outrolling catheter
US3585996A (en) Arterial catheter placement unit and method of use
US3528427A (en) Poole suction catheter
US3416532A (en) Drainage tube with means for scraping away debris therewithin
US3323523A (en) Intravenous catheter assembly with divisible needle sheath portions
US3559643A (en) Catheter placement unit
US3322126A (en) Endotracheal catheter
US3168092A (en) Medical probing instrument having flexible, extrudable tubing adapted to be extraverted under pressure into a body cavity
US3319622A (en) Device for gastro-intestinal fluids
US3421510A (en) Drain having shielded suction tube
US3396727A (en) Drainage tube for body fluids provided with filtering means coated with bacterial preventive material
US3658053A (en) Catheter for use in detecting dissolved gas in fluids such as blood
US3599637A (en) Intravenous catheter assembly
US2898917A (en) Surgical retaining device
MOLNAR et al. Relief of obstructive jaundice through percutaneous transhepatic catheter—a new therapeutic method
US5738656A (en) Drainage apparatus and method of use
US6203526B1 (en) Apparatus for preventing loss of a composition during a medical procedure
US3782381A (en) Method for preventing skiving of a catheter
US5169387A (en) Method and apparatus for catheterization of a body cavity
US6726659B1 (en) Catheter assembly having a fenestrated dilator
US4525156A (en) Method for stomach lavage
US5259836A (en) Hysterography device and method
US4072146A (en) Venous catheter device
US3736939A (en) Balloon catheter with soluble tip
US6245045B1 (en) Combination sheath and catheter for cardiovascular use