WO2011097229 EXPANDABLE AND COLLAPSIBLE MEDICAL DEVICE

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Publication Number WO/2011/097229

Publication Date 11.08.2011

International Application No. PCT/US2011/023341

International Filing Date 01.02.2011

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Applicants

LEVITRONIX LLC [US]/[US] (AllExceptUS)
GELLMAN, Barry, N. [US]/[US] (UsOnly)
RICHARDSON, J., Scott [US]/[US] (UsOnly)
DASSE, Kurt, A. [US]/[US] (UsOnly)

Inventors

GELLMAN, Barry, N.
RICHARDSON, J., Scott
DASSE, Kurt, A.

Agents

TOSTI, Robert J.

Priority Data

61/300,603

02.02.2010

Publication Language English (en)

Filing Language English (EN)

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Title

(EN) EXPANDABLE AND COLLAPSIBLE MEDICAL DEVICE

(FR) DISPOSITIF MÉDICAL EXTENSIBLE ET PLIABLE

Abstract

(EN) A catheter (or cannula) is small enough in diameter to be placed minimally invasively into the body of a patient but also can be expanded post-placement to provide a larger-diameter placed catheter that supports fluid flow at a rate higher than is possible through the pre-placement reduced-diameter catheter. The expandable catheter is constructed using one or more shape memory polymers and can include one or more stent-like sections and/or at least part of the cannula formed as folded lobes. Each of the stent-like sections is configured to enhance the flexibility of the section as compared to the other parts of the catheter and thus allow the section to accommodate tight bends and turns when inserted into the body of the patient. The folded lobes are axial folds that constitute at least one section of the cannula, and they unfold upon expansion of the catheter to create a large cross-sectional shape.

(FR) La présente invention concerne un cathéter (ou une canule) qui a un diamètre assez petit pour être placé de manière peu effractive à l'intérieur du corps d'un patient mais qui peut être également étiré après son positionnement afin de fournir un cathéter en place de plus grand diamètre qui permet au fluide de circuler à une vitesse plus élevée que celle possible à travers le cathéter de diamètre réduit avant son positionnement. Le cathéter extensible est construit en utilisant un ou plusieurs polymères à mémoire de forme et peut comprendre une ou plusieurs sections de type endoprothèse et/ou au moins une partie de la canule formant des lobes repliés. Chacune des sections de type endoprothèse est configurée pour améliorer la flexibilité de la section par rapport aux autres parties du cathéter et permet ainsi à la section de s'adapter à des plis serrés et à des tours lors de son insertion à l'intérieur du corps du patient. Les lobes repliés sont des plis axiaux constituant au moins une section de la canule, et se déplient au moment de l'extension du cathéter afin de créer une forme de section transversale importante.

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

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
29	Dilators with or without means for introducing media, e.g. remedies

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
F	FILTERS 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
2	Filters 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
82	Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
L	METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
27	Materials for prostheses or for coating prostheses
14	Macromolecular materials

A	HUMAN NECESSITIES
61	MEDICAL OR VETERINARY SCIENCE; HYGIENE
L	METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
29	Materials for catheters or for coating catheters
04	Macromolecular materials

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1. WO2011097229 - EXPANDABLE AND COLLAPSIBLE MEDICAL DEVICE