TISSUE REPAIR WITH SPACE-SEEKING SPIRALS OF FILAMENT

A distal portion of a filament (126B, 126C) is extended beyond the distal end of a needle (101) with a gripper (111). The needle with the extended filament is inserted into a cannula (230) with snagging points (231) at the distal opening of the cannula in tissue. The snagging points of the cannula h...

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Bibliographic Details
Main Authors YEUNG, JEFFREY E, YEUNG, TERESA T
Format Patent
LanguageEnglish
French
Published 27.09.2012
Subjects
BANDAGES, DRESSINGS OR ABSORBENT PADS
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
DIAGNOSIS
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PROSTHESES
SURGERY
TREATMENT OR PROTECTION OF EYES OR EARS
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Summary:A distal portion of a filament (126B, 126C) is extended beyond the distal end of a needle (101) with a gripper (111). The needle with the extended filament is inserted into a cannula (230) with snagging points (231) at the distal opening of the cannula in tissue. The snagging points of the cannula hook and retain the distal portion of the filament. During partial withdrawal of the needle, a section of filament is deposited in the lumen of the cannula between the distal ends of the needle and cannula. When the needle is re-advanced, the section of filament is expelled or pushed out of the cannula into tissue. The needle is then rotated; the gripper engages and spirals the expelled filament, burrowing into tissue. The needle can further advanced to push and pack the spiral of filament deep into the tissue. The knotlike filament spiral (126) is individually formed by rotation of the needle and friction between the extended filament and tissue. The process of needle partial withdrawal, re-advancement, rotation and pushing is repeated to pack and fill the tissue with interconnecting spirals of filament to prevent migration from tissue. Spiraling of the filament driven by the rotating needle is space seeking, filling, fitting or conforming to fortify, bulk, fill, cushion or repair the tissue. Bulking with filament spirals can repair degenerated disc, urinary incontinence, fecal incontinence or other defective tissue. The filament spirals can also be used as a suture anchor deep within tissue.
Bibliography:Application Number: CA20122829882