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WO1995008362A1 - Catheter renforce pour cholangiogramme - Google Patents

Catheter renforce pour cholangiogramme Download PDF

Info

Publication number
WO1995008362A1
WO1995008362A1 PCT/US1993/008812 US9308812W WO9508362A1 WO 1995008362 A1 WO1995008362 A1 WO 1995008362A1 US 9308812 W US9308812 W US 9308812W WO 9508362 A1 WO9508362 A1 WO 9508362A1
Authority
WO
WIPO (PCT)
Prior art keywords
zone
catheter
outside diameter
distal end
main length
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.)
Ceased
Application number
PCT/US1993/008812
Other languages
English (en)
Inventor
Richard Harper Mcfarlane
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.)
Taut Inc
Original Assignee
Taut Inc
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 Taut Inc filed Critical Taut Inc
Priority to PCT/US1993/008812 priority Critical patent/WO1995008362A1/fr
Publication of WO1995008362A1 publication Critical patent/WO1995008362A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/0054—Catheters; Hollow probes characterised by structural features with regions for increasing flexibility
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features

Definitions

  • gallbladder operations have been quite common. Such operations were big operations although not especially dangerous. Because such operations were big, the recovery time from such an operation was substantial. In conducting such an operation, an incision was made and, first, through a cholangiogram catheter inserted into the cystic duct, radio opaque material was forced. Thereafter, through x-ray procedures, determination was then made as to whether or not to remove the gallbladder.
  • Cholangiogram catheters upon the forcing of radio opaque material into the duct, were known to be forced out of the incision in the duct by the back pressure built up by the radio opaque material. It became common, to avoid this, to provide a cholangiogram catheter with a headed tip. The tip would be inserted about 3/8" into the cystic duct of a patient. Thereafter, the duct was tied about the catheter adjacent the headed tip so that the headed end could not be forced back out by back pressure since a shoulder at the headed end would captivate it against such back pressures when the duct was tied about it. Subsequently, instead of ties, clamps, usually of titanium, were developed which are applied by a device with jaws. The jaws would apply pressure to the clamp which would cause the clamp to close about the cystic duct and catheter within it near its shoulder.
  • a cholangiogram catheter which can be easily manipulated into an incision in a cystic duct, advanced about 3/8", and which is, preferably, as small in diameter as possible and which can, in spite of being of small diameter, be secured in position by a clamp without collapsing.
  • the drawing illustrates a distal end zone of a catheter having a headed tip and a reinforced length of reduced diameter adjacent the headed tip.
  • a catheter tube generally designed by the numeral 10. It is a thin catheter of plastic material having a distal end 12 and being of any suitable length. From the distal end 12, extending proximally there is a distal end zone 14 and the extending main length of the catheter 16. Preferably, the main length has a outside diameter of between .050" and .100" at about .060".
  • the catheter is provided with a through hole from the distal end 12 to the proximal end, not shown, which defines a flow path of substantially common diameter. The inside diameter is preferably about .032".
  • the distal end zone 14 includes a) a proximal zone 20 preferably with a maximum outside diameter about the same as that of the outside diameter of the main length 16, b) an intermediate zone 22 of reduced outside diameter relative to that of the main length 16, and c) a distalmost headed tip zone 24.
  • the tip zone 24 outside diameter is preferably about the same as the outside diameter of the main length 16, but at least greater than the outside diameter of the intermediate zone, and has a portion 26 which converges distally to the distal end 12 about the through flow path 27.
  • the headed tip zone 24, at its proximal end defines a shoulder 28 at the juncture of the tip zone 24 and intermediate zone 22.
  • the shoulder 28 diverges outwardly from the intermediate zone and distally at an angle of about
  • the catheter is preferably of polypropylene material; and, without the support tube 25, since the tube is of relatively small diameter, for example, .060", it is hard to feed it. That would be like pushing a string with a tube. It is very flexible but, because of the support tube, it can be manipulated quite readily. Once in position, however, it is strong enough to resist collapsing when a clamp is applied to the intermediate zone.
  • the inside diameter of the main length 16 is about .032" while the wall thickness is about .015", the common limits in outside diameter of the main length being between .040" to .100".
  • the plastic wall thickness is about .005" and the inside diameter because of the support tube is about .020", while the outside diameter of the intermediate zone is reduced to about .032".
  • the support tube is of 21 gauge stainless steel medical needle stock.
  • the headed tip 24 is of about the same diameter as that of the outside diameter of the main length. At the distal end, the tip is curved with a radius of curvature of about .025".
  • the intermediate zone may be necked down according to the following steps.
  • a mandrel is posi.tioned in the distal end zone 14. Heat is applied to the intermediate zone and the tube is parallel so that necking down takes place as the outside diameter is reduced and the inside diameter is defined by the outside diameter of the mandrel. Preferably about 3/8" of length is reduced in outside diameter.
  • the mandrel may be removed when the polypropylene material cools; and the length of needle stack is inserted to reinforce the weakened wall of reduced wall thickness and outside diameter for the purpose of reinforcing this length. Thereafter, the rounded or headed tip zone is formed.
  • the inside diameter is reduced relative to the inside diameter of the flow path in the main length defining a shoulder 27 so that the wall thickness of the support tube is captivated against moving out of the end, its outside diameter being greater than the diameter of the hole at the end 12.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

L'invention concerne un cathéter (10) pour cholangiogramme possédant une partie terminale à tête (14), renforcée au niveau de son extrémité distale, ce cathéter (10) étant un tube en polypropylène; la partie terminale à tête (14) possède une zone intermédiaire (22), située entre l'extrémité distale (12) et la section principale (16), et dont le diamètre externe est réduit par rapport à celui de l'embout à tête (24) et de la section principale (16), et qui est renforcée par un tube-support rigide (25) de la même matière que les aiguilles hypodermiques.
PCT/US1993/008812 1993-09-20 1993-09-20 Catheter renforce pour cholangiogramme Ceased WO1995008362A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US1993/008812 WO1995008362A1 (fr) 1993-09-20 1993-09-20 Catheter renforce pour cholangiogramme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1993/008812 WO1995008362A1 (fr) 1993-09-20 1993-09-20 Catheter renforce pour cholangiogramme

Publications (1)

Publication Number Publication Date
WO1995008362A1 true WO1995008362A1 (fr) 1995-03-30

Family

ID=22236969

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/008812 Ceased WO1995008362A1 (fr) 1993-09-20 1993-09-20 Catheter renforce pour cholangiogramme

Country Status (1)

Country Link
WO (1) WO1995008362A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2432845A1 (es) * 2012-06-05 2013-12-05 Universidad De Málaga Cánula de colangiografía intraoperatoria
CN106999211A (zh) * 2014-10-14 2017-08-01 特兰瑟普塔尔解决方案公司 卵圆窝穿透
US10582950B2 (en) 2013-04-15 2020-03-10 Transseptal Solutions Ltd. Fossa ovalis penetration
US11324549B2 (en) 2015-10-14 2022-05-10 Transseptal Solutions Ltd. Interatrial septum penetration
US12426922B2 (en) 2013-04-15 2025-09-30 Transseptal Solutions Ltd. Fossa ovalis penetration catheter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3448739A (en) * 1966-08-22 1969-06-10 Edwards Lab Inc Double lumen diagnostic balloon catheter
US3780740A (en) * 1972-11-01 1973-12-25 J Rhea Intubation device and method of advancing a tube past the pylorus
US4484585A (en) * 1981-09-12 1984-11-27 Richard Wolf Gmbh Catheters
US4719924A (en) * 1986-09-09 1988-01-19 C. R. Bard, Inc. Small diameter steerable guidewire with adjustable tip

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3448739A (en) * 1966-08-22 1969-06-10 Edwards Lab Inc Double lumen diagnostic balloon catheter
US3780740A (en) * 1972-11-01 1973-12-25 J Rhea Intubation device and method of advancing a tube past the pylorus
US4484585A (en) * 1981-09-12 1984-11-27 Richard Wolf Gmbh Catheters
US4719924A (en) * 1986-09-09 1988-01-19 C. R. Bard, Inc. Small diameter steerable guidewire with adjustable tip

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2432845A1 (es) * 2012-06-05 2013-12-05 Universidad De Málaga Cánula de colangiografía intraoperatoria
US10582950B2 (en) 2013-04-15 2020-03-10 Transseptal Solutions Ltd. Fossa ovalis penetration
US11540861B2 (en) 2013-04-15 2023-01-03 Transseptal Solutions Ltd. Fossa ovalis puncturing catheter
US12426922B2 (en) 2013-04-15 2025-09-30 Transseptal Solutions Ltd. Fossa ovalis penetration catheter
CN106999211A (zh) * 2014-10-14 2017-08-01 特兰瑟普塔尔解决方案公司 卵圆窝穿透
US11324921B2 (en) 2014-10-14 2022-05-10 Transseptal Solutions Ltd. Catheter having partially-braided wall
US11324549B2 (en) 2015-10-14 2022-05-10 Transseptal Solutions Ltd. Interatrial septum penetration
US12121292B2 (en) 2015-10-14 2024-10-22 Transseptal Solutions Ltd. Interatrial septum penetration

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