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1. (WO1983000429) CATHETER-NEEDLE ASSEMBLY AND METHOD FOR DRAINAGE OF FLUID COLLECTIONS
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Pub. No.:
WO/1983/000429
International Application No.:
PCT/US1982/001065
Publication Date:
17.02.1983
International Filing Date:
02.08.1982
IPC:
A61B 17/34
(2006.01),
A61M 25/06
(2006.01)
A
HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
17
Surgical instruments, devices or methods, e.g. tourniquets
34
Trocars; Puncturing needles
A
HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
M
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
25
Catheters; Hollow probes
01
Introducing, guiding, advancing, emplacing or holding catheters
06
Body-piercing guide needles or the like
Applicants:
ELECTRO-CATHETER CORPORATION
[US/US]; 2100 Rahway Court, Rahway, NJ 07065 (US)
Inventors:
ACKERMAN, Bernard
; (US)
Agent:
YOUNG, Philip @
; Hubbell, Cohen, Stiefel & Gross, 551 Fifth Avenue, New York, NY 10017 (US)
Priority Data:
291,460
10.08.1981
US
387,013
10.06.1982
US
Title
(EN)
CATHETER-NEEDLE ASSEMBLY AND METHOD FOR DRAINAGE OF FLUID COLLECTIONS
(FR)
ASSEMBLAGE DE CATHETER-AIGUILLE ET PROCEDE DE DRAINAGE DE FORMATIONS DE FLUIDE
Abstract:
(EN)
A method and a needle and catheter system for draining localized fluid collections, comprising: preloading a curved, pigtail catheter (22) by inserting through it a hollow cannula (10), the end (20) of the cannula (10) being formed with blunt and rounded edges (12). Next, a pointed stylet (14) is inserted through the hollow cannula (10). The stylet (14) is longer than the cannula (10) so that its end (18) will extend beyond the end (20) of the cannula (10) when received therethrough. The pigtail catheter (22) is made of a resilient material designed with a normal pigtail configuration and contains side holes (24) on the inner aspect of the distal pigtail (26). The next step involves inserting the two part needle (14, 10) having the catheter (22) mounted thereon into the desired tissue area (38), and then withdrawing the cannula (10) and stylet (14) while maintaining the drainage catheter (22) in the fluid location (42) such that the distal end (26) of the catheter (22) will return to its curved pigtail shape. Reformation of the pigtail catheter (22) to the curved shape at its distal end (26) assures positioning of its holes (24) within the fluid (42) for the final drainage step.
(FR)
Procédé et système d'aiguille et de cathéter pour le drainage de formations de fluides localisées, consistant à charger au préalable un cathéter en queue de cochon courbe (22) en insérant au travers de celui-ci une canule creuse (10), l'extrémité (20) de la canule (10) présentant des bords émoussés et arrondis. La pointe d'un stylet (14) est insérée ensuite au travers de la canule creuse (10). Le stylet (14) est plus long que la canule (10) de sorte que son extrémité (18) dépasse l'extrémité (20) de la canule (10) lorsqu'il est logé dans celle-ci. Le cathéter en queue de cochon (22) est composé d'un matériau élastique ayant une configuration normale en queue de cochon et contient des trous latéraux (24) sur le côté intérieur de la partie distale de la queue de cochon (26). L'étape suivante consiste à insérer l'aiguille en deux parties (14, 10) sur laquelle est montée le cathéter (22) dans la zone de tissu désiré (38) et à extraire ensuite la canule (10) et le stylet (14) tout en maintenant le cathéter de drainage (22) dans l'emplacement du fluide (42) de sorte que l'extrémité distale (26) du cathéter (22) reprenne sa forme courbe en queue de cochon. Le fait que le cathéter en queue de cochon (22) reprenne sa forme courbe à son extrémité distale (26) assure le positionnement de ces trous (24) dans le fluide (42) pour l'étape finale de drainage.
Designated States:
JP.
European Patent Office (DE, FR, GB).
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)