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1. EP0906134 - BALLOON CATHETER HAVING A LOW PROFILE VALVE

Office
European Patent Office
Application Number 97907613
Application Date 27.01.1997
Publication Number 0906134
Publication Date 07.04.1999
Publication Kind B1
IPC
A61F 2/958
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
95Instruments specially adapted for placement or removal of stents or stent-grafts
958Inflatable balloons for placing stents or stent-grafts
A61M 25/00
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 29/02
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
29Dilators with or without means for introducing media, e.g. remedies
02Inflatable dilators; Dilators made of swellable materials
CPC
A61M 25/0075
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
0067characterised by the distal end, e.g. tips
0074Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
0075Valve means
A61M 25/1027
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
10Balloon catheters
1027Making of balloon catheters
A61M 25/1036
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
10Balloon catheters
1027Making of balloon catheters
1036Making parts for balloon catheter systems, e.g. shafts or distal ends
A61M 29/02
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
29Dilators with or without means for introducing media, e.g. remedies
02Dilators made of swellable material
Applicants SCIMED LIFE SYSTEMS INC
Inventors SELL JONATHAN C
MISCHE HANS G
GAMBLE JON D
HOIUM SCOTT A
LUCHT CHARLES R
WILKE THOMAS J
Designated States
Priority Data 59471496 31.01.1996 US
08697523 26.08.1996 US
9702238 27.01.1997 US
Title
(DE) BALLONKATHETER MIT VENTIL MIT NIEDRIGEM PROFIL
(EN) BALLOON CATHETER HAVING A LOW PROFILE VALVE
(FR) CATHETER A BALLONNET EQUIPE D'UNE VALVE DE GONFLAGE A SECTION REDUITE
Abstract
(EN)
A low profile inflation valve (10) located inside a balloon catheter that enables a user to inflate the balloon and exchange other medical apparatus over the catheter while the balloon remains inflated. The low profile inflation valve of the present invention includes a first tube (20) having a lumen (22) and at least one region of decreased inner diameter (24), and a structure movably located inside the lumen of said first tube, wherein said region of decreased inner diameter of said first tube forms a seal with a portion of said structure. The present invention further includes a method of making a low profile inflation valve (10) using a first and second tube comprising the steps of creating an aperture in at least one side of a second tube, placing the second tube inside a first tube, the first tube being made of thermoplastic material, applying heat to a localized area of the first tube, and compressing the first tube to form a region of reduced internal diameter, the reduced diameter forming a seal with the outside diameter of the second tube.

(FR)
L'invention concerne une valve (10) de gonflage à section réduite, placée à l'intérieur d'un cathéter à ballonnet. Cette valve permet à l'utilisateur de gonfler le ballonnet et de changer d'autres appareils médicaux sur le cathéter tout en maintenant le ballonnet à l'état gonflé. La valve selon l'invention comprend un premier tube (20) présentant une lumière (22) et au moins une zone de diamètre intérieur réduit (24), et un élément mobile à l'intérieur de la lumière dudit premier tube. La zone de diamètre intérieur réduit du premier tube assure une fermeture étanche avec une partie de l'élément mobile. L'invention concerne, en outre, un procédé de fabrication de la valve (10) de gonflage à section réduite utilisant des premier et deuxième tubes. Ce procédé comprend les étapes consistant à créer une ouverture dans au moins un côté du deuxième tube, à placer ce dernier à l'intérieur du premier tube constitué d'un matériau thermoplastique, à appliquer de la chaleur à une zone localisée du premier tube, et à comprimer ce premier tube pour former une zone de diamètre interne réduit. Ce diamètre réduit constitue une fermeture étanche avec le diamètre extérieur du deuxième tube.