US2614563A - Surgical apparatus for intestinal intubation - Google Patents

Surgical apparatus for intestinal intubation Download PDF

Info

Publication number
US2614563A
US2614563A US220257A US22025751A US2614563A US 2614563 A US2614563 A US 2614563A US 220257 A US220257 A US 220257A US 22025751 A US22025751 A US 22025751A US 2614563 A US2614563 A US 2614563A
Authority
US
United States
Prior art keywords
tube
inner tube
coupling
drawn
surgical apparatus
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
US220257A
Inventor
Jr John W Devine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to US220257A priority Critical patent/US2614563A/en
Application granted granted Critical
Publication of US2614563A publication Critical patent/US2614563A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • A61M25/007Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
    • 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
    • A61M25/0021Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026Multi-lumen catheters with stationary elements
    • A61M2025/0039Multi-lumen catheters with stationary elements characterized by lumina being arranged coaxially

Definitions

  • This invention relates to a surgical apparatus, the primary object of the invention being to provide an appliance designed especially for use in intestinal intubation.
  • the primary object of the invention is to provide an appliance for use in intestinal intubation, which includes an outer perforated tubular member constructed of .semi-yieldable material, and an inner semi-rigid plastic tube supported within the outer tubular member and spaced from the wall of the outer tubular member providing a passageway therebetween, means being provided and supported on the outer end of the inner tube of the device into which atmospheric air or oxygen may be drawn for the purpose of venting the intestines to prevent the mucosa from collapsing and being drawn into the perforations of the outer tubular member to obstruct' passage of material therethrough.
  • Still another object of the invention is to provide means to eliminate any possibility of a vacuum in the intestinal tract due to the action of the suction creating apparatus, by admitting air to the inner end of the apparatus to be drawn off by the suction creating device used with the apparatus.
  • Still another object of the invention is to provide a surgical apparatus which may, if desired, be converted into an apparatus including a sump for removing fluids and gas from the intestines.
  • Figure 1 is a view illlustrating an appliance constructed in accordance with the invention as rolled into a coil.
  • Fig. 2 is an enlarged sectional view through the outer or sump tube of the appliance illustrating the construction of the sump end oi the tube with the inner tube as held therein.
  • Fig. 3 is a sectional view taken on line 33 of Fig. 2.
  • the device embodies an outer or main tube 5 having one of its ends closed at 6, the tube 5 being provided with openings 1 formed in the wall thereof, the openings being arranged in staggered relation z r with respect to each other, as clearly shown by the drawing.
  • v p v p
  • the outer or main tube 5 is constructed oi semi-rigid plastic, rubber or similar material, which is of a character to permitthe device to be inserted into the intestinal tract, in the usual way.
  • inner tube 8 which is also'constructed'of semirigid plastic material to permit of bending of the apparatus on entering the intestinal tract.
  • the inner tube 8 is of a diameter substantially less than the diameter of the outer or main tube 5.
  • the inner tube is provided with apertures I0 which are arranged adjacent to the openings 1, the apertures I0 establishing communication between the inner tube and passageway 9, to permit the gases and liquids to be drawn into the inner tube.
  • the construction of the outer or main tube 5 at its end, is such that a sump I I is provided, into which the open end I2 of the inner tube 8 extends, so that liquids finding their way into the sump, may be drawn oii by a suction created within the inner tube 8.
  • the inner tube 8 extends through the coupling i3 which has one of its ends extended into one end of the main tube 5, as shown by Fig. 1 of the drawing, the opposite end of the coupling I3 extending into the hollow gasket [4 through which the reduced end I5 of the coupling I6 extends, the gasket providing an air-tight connection between the coupling I6 and coupling I3.
  • the reduced end 15 of the coupling I6 is extended into the end of the inner tube 8, the enlarged end of the coupling I6 constituting means for connecting a suction hose thereto, should it be desired to operate the apparatus as a sump, in which case it would be necessary to create a suction towards the atmosphere, through the inner tube 8, to draw oil material from the sump H.
  • the reference character ll indicates a branch pipe which is disposed intermediate the ends of the coupling l3, the branch pipe I! having a tapered end fitted in one end of the tube l8, the branch pipe and tube l8 being in communication with the passageway 9 so that air and material may be drawn therethrough.
  • a suction is created through the tube l8, branch I! and passageway- Mounted within the outer or main tube 5, is the Due to the fact that the inner tube 8 communicates with the atmosphere through the coupling l5, it is obvious that when the apparatus has. eliminated the fluids and gases of the intestines,
  • intes'tinal intubation apparatus comprisingfa'n outer'tube having a closed end, said outer tube having groups of openings extending through the wall thereof, the groups of openings'in'the wall of theouter tube'adjacent to the closed end thereof being spaced 'from the closed end providing a sump at the closed end of said outer tube, said outer tube adapted to be inserted thegintestinal tract, an inner tube of semirigid plastic material extending into the outer tube, the walls of said tubes being spaced apart providing an annular passageway around said inner tube, said inner tube terminating at a point a substantial distance beyond the openings adjacent to the closed end of the outer tube, a coupling fitted in one end of the outer tube through which the inner tube extends, said inner tube communicating with the atmosphere through said coupling, a branch tube exten'dingfr'om said coupling to which a suction tube is secured, and

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Anesthesiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • External Artificial Organs (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Description

Oct. 21, 1952 J. DEVlNE, JR
SURGICAL APPARATUS FOR INTESTINAL INTUBATION Filed April 10, 1951 WWI/1m faith Wye e mi.
' INVENTOR ATTORNEYS.
Patented Oct. 21, 1952 UNITED STATES PATENTAOFFICE SURGICAL APPARATUS FOR INTESTINAL INTUBATION John W. Devine, Jr., Lynchburg, Va. Application April 10, 1951, Serial No. 220,257
v V 1 Claim.
This invention relates to a surgical apparatus, the primary object of the invention being to provide an appliance designed especially for use in intestinal intubation.
The primary object of the invention is to provide an appliance for use in intestinal intubation, which includes an outer perforated tubular member constructed of .semi-yieldable material, and an inner semi-rigid plastic tube supported within the outer tubular member and spaced from the wall of the outer tubular member providing a passageway therebetween, means being provided and supported on the outer end of the inner tube of the device into which atmospheric air or oxygen may be drawn for the purpose of venting the intestines to prevent the mucosa from collapsing and being drawn into the perforations of the outer tubular member to obstruct' passage of material therethrough.
Still another object of the invention is to provide means to eliminate any possibility of a vacuum in the intestinal tract due to the action of the suction creating apparatus, by admitting air to the inner end of the apparatus to be drawn off by the suction creating device used with the apparatus.
Still another object of the invention is to provide a surgical apparatus which may, if desired, be converted into an apparatus including a sump for removing fluids and gas from the intestines.
With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.
Referring to the drawing:
Figure 1 is a view illlustrating an appliance constructed in accordance with the invention as rolled into a coil.
Fig. 2 is an enlarged sectional view through the outer or sump tube of the appliance illustrating the construction of the sump end oi the tube with the inner tube as held therein.
Fig. 3 is a sectional view taken on line 33 of Fig. 2.
Referring to the drawing in detail, the device embodies an outer or main tube 5 having one of its ends closed at 6, the tube 5 being provided with openings 1 formed in the wall thereof, the openings being arranged in staggered relation z r with respect to each other, as clearly shown by the drawing. v p
The outer or main tube 5 is constructed oi semi-rigid plastic, rubber or similar material, which is of a character to permitthe device to be inserted into the intestinal tract, in the usual way.
inner tube 8 which is also'constructed'of semirigid plastic material to permit of bending of the apparatus on entering the intestinal tract. h
As clearly shown by Fig. 2 of the drawing,.,the inner tube 8 is of a diameter substantially less than the diameter of the outer or main tube 5. with the result that a passageway 9 is provided between the inner and outer tubes of the apparatus into which gas and liquids are drawn, and
from which the gas and liquids are drawn into the inner tube 8. As shown, the inner tube is provided with apertures I0 which are arranged adjacent to the openings 1, the apertures I0 establishing communication between the inner tube and passageway 9, to permit the gases and liquids to be drawn into the inner tube.
The construction of the outer or main tube 5 at its end, is such that a sump I I is provided, into which the open end I2 of the inner tube 8 extends, so that liquids finding their way into the sump, may be drawn oii by a suction created within the inner tube 8.
The inner tube 8 extends through the coupling i3 which has one of its ends extended into one end of the main tube 5, as shown by Fig. 1 of the drawing, the opposite end of the coupling I3 extending into the hollow gasket [4 through which the reduced end I5 of the coupling I6 extends, the gasket providing an air-tight connection between the coupling I6 and coupling I3. As shown, the reduced end 15 of the coupling I6 is extended into the end of the inner tube 8, the enlarged end of the coupling I6 constituting means for connecting a suction hose thereto, should it be desired to operate the apparatus as a sump, in which case it would be necessary to create a suction towards the atmosphere, through the inner tube 8, to draw oil material from the sump H. I
The reference character ll indicates a branch pipe which is disposed intermediate the ends of the coupling l3, the branch pipe I! having a tapered end fitted in one end of the tube l8, the branch pipe and tube l8 being in communication with the passageway 9 so that air and material may be drawn therethrough. A suction is created through the tube l8, branch I! and passageway- Mounted within the outer or main tube 5, is the Due to the fact that the inner tube 8 communicates with the atmosphere through the coupling l5, it is obvious that when the apparatus has. eliminated the fluids and gases of the intestines,
air will be drawn through the inner tube 8, discharging into the passageway 9 and drawn offthrough the couplin 13, branch I! and tube l8,
thereby preventing a vacuum which would collapse the intestines or draw the mucosa into the openings 'of the outer tube 5.
Having thus described the invention, whatis claimedi's:
intes'tinal intubation apparatus, comprisingfa'n outer'tube having a closed end, said outer tube having groups of openings extending through the wall thereof, the groups of openings'in'the wall of theouter tube'adjacent to the closed end thereof being spaced 'from the closed end providing a sump at the closed end of said outer tube, said outer tube adapted to be inserted thegintestinal tract, an inner tube of semirigid plastic material extending into the outer tube, the walls of said tubes being spaced apart providing an annular passageway around said inner tube, said inner tube terminating at a point a substantial distance beyond the openings adjacent to the closed end of the outer tube, a coupling fitted in one end of the outer tube through which the inner tube extends, said inner tube communicating with the atmosphere through said coupling, a branch tube exten'dingfr'om said coupling to which a suction tube is secured, and
through which air is drawn creating a suction in the inner tube, venting said outer tube.
JOHN W. DEVINE, JR.
REFERENCES CITED The following. references are of record in the file of this patent:
UNITED STATES PATENTS OTHER REFERENCES Surgery, vol. 25, No. 5 May 1949, an article by J .J .,Wild, The Design andManageme ntof' Long-Intestinal Tubes, pp. 779-813 o'f which only pages784, 785, 302 and 8 l0 arecited.
US220257A 1951-04-10 1951-04-10 Surgical apparatus for intestinal intubation Expired - Lifetime US2614563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US220257A US2614563A (en) 1951-04-10 1951-04-10 Surgical apparatus for intestinal intubation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US220257A US2614563A (en) 1951-04-10 1951-04-10 Surgical apparatus for intestinal intubation

Publications (1)

Publication Number Publication Date
US2614563A true US2614563A (en) 1952-10-21

Family

ID=22822784

Family Applications (1)

Application Number Title Priority Date Filing Date
US220257A Expired - Lifetime US2614563A (en) 1951-04-10 1951-04-10 Surgical apparatus for intestinal intubation

Country Status (1)

Country Link
US (1) US2614563A (en)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189031A (en) * 1963-11-04 1965-06-15 Andersen Prod H W Gastrointestinal sump tube
US3308825A (en) * 1963-08-02 1967-03-14 Joseph R Cruse Surgical suction device
US3344523A (en) * 1965-01-18 1967-10-03 Halsey Davis Multi-stage evacuating device
US3416532A (en) * 1964-07-24 1968-12-17 Grossman Alan Richard Drainage tube with means for scraping away debris therewithin
US3421510A (en) * 1966-01-10 1969-01-14 Edward L Kettenbach Drain having shielded suction tube
US3430631A (en) * 1966-01-12 1969-03-04 Daniel J Abramson Surgeon's drain
US3470869A (en) * 1965-07-09 1969-10-07 Cleveland Clinic Foundation Apparatus for gastro-intestinal barium air contrast spraying
US3580300A (en) * 1969-07-25 1971-05-25 Grace W R & Co Vacuum apparatus and snorkel nozzle
US3610226A (en) * 1968-02-27 1971-10-05 Anthony M Albisser A double lumen cannula for blood sampling
US3626928A (en) * 1970-06-22 1971-12-14 Becton Dickinson Co Intrauterine washing apparatus
US3823750A (en) * 1969-07-25 1974-07-16 Grace W R & Co Vacuum nozzle device
US3908660A (en) * 1974-01-02 1975-09-30 Isaac Kaplan Apparatus for draining a conduit
US4022219A (en) * 1975-07-28 1977-05-10 Edward Basta Endotracheal device
US4069814A (en) * 1976-05-06 1978-01-24 Miles Laboratories, Inc. Double lumen cannula apparatus
US4182343A (en) * 1976-10-05 1980-01-08 President of Tokyo Medical and Dental University Double coeliac drainage tube made of silicone
US4249535A (en) * 1979-02-02 1981-02-10 Hargest Thomas S Iii Gastric feeding device
US4300550A (en) * 1978-04-26 1981-11-17 Becton, Dickinson And Company Suction and oxygenation catheter
US4607635A (en) * 1984-09-27 1986-08-26 Heyden Eugene L Apparatus for intubation
US4613323A (en) * 1984-11-19 1986-09-23 University Of Kentucky Research Foundation Multiple function intubation apparatus and method
US4637389A (en) * 1985-04-08 1987-01-20 Heyden Eugene L Tubular device for intubation
US4676778A (en) * 1986-10-27 1987-06-30 Nelson Jr Richard L Long intestinal catheter with sump
US4717379A (en) * 1984-06-29 1988-01-05 Mediplast Ab Catheter, probe or similar device
US4735606A (en) * 1982-10-12 1988-04-05 Sherwood Medical Company Chest drainage apparatus
US6394996B1 (en) 1997-01-07 2002-05-28 C. R. Bard, Inc. System for aspirating and irrigating tract wounds
US20060122575A1 (en) * 2002-06-11 2006-06-08 Akio Wakabayashi System and efficient drainage of body cavity
US20070270766A1 (en) * 2006-05-18 2007-11-22 Cannuflow, Inc. Anti-extravasation surgical portal plug
DE102006037094A1 (en) * 2006-08-07 2008-02-14 Wiedeck, Jörg, Dr.med. Deflation probe especially for endoscope has a perforated section inserted via the working duct of the endoscope
US20080262369A1 (en) * 2004-12-28 2008-10-23 Joshua Lewis Colman Capnographic Sampling Catheter
US11324918B2 (en) * 2014-01-14 2022-05-10 The Charles Stark Draper Laboratory, Inc. Seeping flow anti-clotting blood catheter
US20220387771A1 (en) * 2021-05-08 2022-12-08 Ningbo First Hospital Nephrostomy Tube

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1188180A (en) * 1916-04-11 1916-06-20 Charles Edmund Kells Surgical tip.
US1843169A (en) * 1925-04-20 1932-02-02 Elmer I Mckesson Flow handling for surgical treatments
US2230218A (en) * 1938-06-02 1941-02-04 Walter F Asche Gastro-intestinal treatment system
US2560915A (en) * 1947-04-05 1951-07-17 Alfred A Bamberger Sump drain

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1188180A (en) * 1916-04-11 1916-06-20 Charles Edmund Kells Surgical tip.
US1843169A (en) * 1925-04-20 1932-02-02 Elmer I Mckesson Flow handling for surgical treatments
US2230218A (en) * 1938-06-02 1941-02-04 Walter F Asche Gastro-intestinal treatment system
US2560915A (en) * 1947-04-05 1951-07-17 Alfred A Bamberger Sump drain

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308825A (en) * 1963-08-02 1967-03-14 Joseph R Cruse Surgical suction device
US3189031A (en) * 1963-11-04 1965-06-15 Andersen Prod H W Gastrointestinal sump tube
US3416532A (en) * 1964-07-24 1968-12-17 Grossman Alan Richard Drainage tube with means for scraping away debris therewithin
US3344523A (en) * 1965-01-18 1967-10-03 Halsey Davis Multi-stage evacuating device
US3470869A (en) * 1965-07-09 1969-10-07 Cleveland Clinic Foundation Apparatus for gastro-intestinal barium air contrast spraying
US3421510A (en) * 1966-01-10 1969-01-14 Edward L Kettenbach Drain having shielded suction tube
US3430631A (en) * 1966-01-12 1969-03-04 Daniel J Abramson Surgeon's drain
US3610226A (en) * 1968-02-27 1971-10-05 Anthony M Albisser A double lumen cannula for blood sampling
US3823750A (en) * 1969-07-25 1974-07-16 Grace W R & Co Vacuum nozzle device
US3580300A (en) * 1969-07-25 1971-05-25 Grace W R & Co Vacuum apparatus and snorkel nozzle
US3626928A (en) * 1970-06-22 1971-12-14 Becton Dickinson Co Intrauterine washing apparatus
US3908660A (en) * 1974-01-02 1975-09-30 Isaac Kaplan Apparatus for draining a conduit
US4022219A (en) * 1975-07-28 1977-05-10 Edward Basta Endotracheal device
US4069814A (en) * 1976-05-06 1978-01-24 Miles Laboratories, Inc. Double lumen cannula apparatus
US4182343A (en) * 1976-10-05 1980-01-08 President of Tokyo Medical and Dental University Double coeliac drainage tube made of silicone
US4300550A (en) * 1978-04-26 1981-11-17 Becton, Dickinson And Company Suction and oxygenation catheter
US4249535A (en) * 1979-02-02 1981-02-10 Hargest Thomas S Iii Gastric feeding device
US4735606A (en) * 1982-10-12 1988-04-05 Sherwood Medical Company Chest drainage apparatus
US4717379A (en) * 1984-06-29 1988-01-05 Mediplast Ab Catheter, probe or similar device
US4607635A (en) * 1984-09-27 1986-08-26 Heyden Eugene L Apparatus for intubation
US4613323A (en) * 1984-11-19 1986-09-23 University Of Kentucky Research Foundation Multiple function intubation apparatus and method
US4637389A (en) * 1985-04-08 1987-01-20 Heyden Eugene L Tubular device for intubation
US4676778A (en) * 1986-10-27 1987-06-30 Nelson Jr Richard L Long intestinal catheter with sump
US6394996B1 (en) 1997-01-07 2002-05-28 C. R. Bard, Inc. System for aspirating and irrigating tract wounds
US6878142B2 (en) 1997-01-07 2005-04-12 C. R. Bard, Inc. System for aspirating and irrigating tract wounds
US8439893B2 (en) * 2002-06-11 2013-05-14 Medela Holding Ag System and method for efficient drainage of body cavity
US20060122575A1 (en) * 2002-06-11 2006-06-08 Akio Wakabayashi System and efficient drainage of body cavity
US20080262369A1 (en) * 2004-12-28 2008-10-23 Joshua Lewis Colman Capnographic Sampling Catheter
US20070270766A1 (en) * 2006-05-18 2007-11-22 Cannuflow, Inc. Anti-extravasation surgical portal plug
US8652090B2 (en) * 2006-05-18 2014-02-18 Cannuflow, Inc. Anti-extravasation surgical portal plug
US20140163531A1 (en) * 2006-05-18 2014-06-12 Cannuflow, Inc. Anti-Extravasation Surgical Portal Plug
US9211139B2 (en) * 2006-05-18 2015-12-15 Cannuflow, Inc. Anti-extravasation surgical portal plug
US20170106175A1 (en) * 2006-05-18 2017-04-20 Cannuflow, Inc. Anti-Extravasation Surgical Portal Plug
DE102006037094A1 (en) * 2006-08-07 2008-02-14 Wiedeck, Jörg, Dr.med. Deflation probe especially for endoscope has a perforated section inserted via the working duct of the endoscope
US11324918B2 (en) * 2014-01-14 2022-05-10 The Charles Stark Draper Laboratory, Inc. Seeping flow anti-clotting blood catheter
US20220387771A1 (en) * 2021-05-08 2022-12-08 Ningbo First Hospital Nephrostomy Tube
US11628285B2 (en) * 2021-05-08 2023-04-18 Ningbo First Hospital Nephrostomy tube

Similar Documents

Publication Publication Date Title
US2614563A (en) Surgical apparatus for intestinal intubation
US3388705A (en) Universal endotracheal tube coupling or adaptor
GB1303559A (en)
US1835757A (en) Connecting device
US9987449B2 (en) Suction catheter device and method
CN109475668A (en) Conduit dynamic tip occlusion
US2305382A (en) Bubble pipe
CN208877666U (en) A kind of gasbag pressure instruction device
US526141A (en) Pneumatic tube-fisher
US2756959A (en) Fluid-pressure responsive sphincter valve
US4526207A (en) Inflatable plug for interiorly cylindrical conduits
GB1288033A (en)
US3242524A (en) Apparatus for turning a flexible tube inside out
US2702548A (en) Insemination tube syringe
GB965878A (en) Catheter
US3542020A (en) Fluid flow devices
US2758598A (en) Venoclysis equipment
CN109395219A (en) Gasbag pressure instruction device
GB2088512A (en) Inflatable plug for cylindrical conduits
CN207370923U (en) A kind of air-leakage preventing device for thoracic cavity tube drawing
JP3182626U (en) Cuff internal pressure display
CN209270424U (en) Relief pipe is used in the nursing of adjustable type division of gastroenterology
GB177167A (en) Process and apparatus for stretching and widening elastic bodies and fitting them to other bodies
US9708789B2 (en) Soil gas extraction apparatus
CN217525893U (en) Drainage bag for self-adaptive drainage tube thickness