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1. WO1996003169 - FLATTENED COLLAPSIBLE VASCULAR CATHETER

Publication Number WO/1996/003169
Publication Date 08.02.1996
International Application No. PCT/US1995/009394
International Filing Date 26.07.1995
Chapter 2 Demand Filed 20.02.1996
IPC
A61M 25/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
25Catheters; Hollow probes
A61M 39/08 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
39Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
08Tubes; Storage means specially adapted therefor
CPC
A61M 2025/0025
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
0021characterised by the form of the tubing
0023by the form of the lumen, e.g. cross-section, variable diameter
0025having a collapsible lumen
A61M 2025/0035
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
0021characterised by the form of the tubing
0023by the form of the lumen, e.g. cross-section, variable diameter
0026Multi-lumen catheters with stationary elements
0035characterized by a variable lumen cross-section by means of a resilient flexible septum or outer wall
A61M 25/0021
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
0021characterised by the form of the tubing
A61M 25/0023
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
0021characterised by the form of the tubing
0023by the form of the lumen, e.g. cross-section, variable diameter
A61M 25/003
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
0021characterised by the form of the tubing
0023by the form of the lumen, e.g. cross-section, variable diameter
0026Multi-lumen catheters with stationary elements
003characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves
A61M 25/0043
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
0043characterised by structural features
Applicants
  • PALESTRANT, Aubrey, M. [US/US]; US
Inventors
  • PALESTRANT, Aubrey, M.; US
Agents
  • GLAZER, Marvin, A. ; Cahill, Sutton & Thomas, plc Suite 155 2141 E. Highland Avenue Phoenix, AZ 85016, US
Priority Data
08/282,03628.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FLATTENED COLLAPSIBLE VASCULAR CATHETER
(FR) CATHETER VASCULAIRE PLIABLE APLATI
Abstract
(EN)
An apparatus and method for establishing a collapsible infusion conduit in a blood vessel (46) includes a catheter (20) formed as a normally-flattened tube (44) of flexible, collapsible plastic. When placed in a blood vessel, the catheter collapses to a flattened configuration (fig. 3D) for lying along the wall of the blood vessel to avoid obstruction to blood flow. During infusion, infusion fluid expands the catheter to a generally oval flow path (fig. 3B). The catheter may be initially placed in the blood vessel by pre-loading the catheter over a guide wire (50) and inserting the catheter and guide wire through an introducer sheath (78) into the blood vessel. Infusion fluid is thereafter applied to the trailing end (24, 28, 30) of the catheter to expand the catheter to facilitate withdrawal of the guide wire. Alternatively, the leading end (22) of the catheter may initially be sealed, and placement into the blood vessel is achieved through an introducer sheath (78) by inflating the catheter with pressurized fluid (72) to temporarily render the catheter rigid and generally oval. The seal at the leading end of the catheter is thereafter opened, either by inserting a guide wire (82) into the catheter to pierce the sealed end, or by increasing the inflation pressure to burst a weakened break line (74) formed at the leading end (22) of the catheter.
(FR)
La présente invention concerne un appareil et un procédé de mise en place d'un conduit de perfusion pliable dans un vaisseau sanguin (46). Cet appareil se compose d'un cathéter (20) dont la forme au repos est celle d'un tube aplati (44) en plastique souple pliable. Lorsqu'il est mis en place dans un vaisseau sanguin, le cathéter se plie pour prendre une configuration aplatie (Figure 3D) ce qui lui permet de se situer le long de la paroi du vaisseau pour éviter toute obstruction de l'écoulement sanguin. En cours de perfusion, le fluide transfusionnel gonfle le cathéter qui détermine un conduit d'écoulement de forme sensiblement ovale (Figure 3B). Le cathéter peut être initialement placé dans le vaisseau sanguin en disposant préalablement le cathéter autour d'un fil-guide (50) et en introduisant le cathéter et le fil-guide dans le vaisseau sanguin au travers d'un fourreau d'introduction (78). Ensuite, l'admission du fluide transfusionnel par l'extrémité arrière (24, 28, 30) du cathéter gonfle le cathéter et permet de retirer le fil-guide. Selon un autre mode de réalisation de l'invention, l'extrémité avant (22) du cathéter peut être initialement fermée de façon étanche, la mise en place dans le vaisseau sanguin se faisant au travers d'un fourreau d'introduction (78) en gonflant le cathéter au moyen d'un fluide sous pression (72), ce qui permet de rigidifier temporairement le cathéter et de le rendre sensiblement ovale. La fermeture étanche de l'extrémité avant du cathéter est ouverte par la suite, soit par insertion du fil-guide (82) dans le cathéter de façon à perforer l'extrémité fermée de façon étanche, soit en augmentant la pression de gonflage pour briser une ligne de rupture (74) préparée sur l'extrémité avant (72) du cathéter.
Also published as
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