Filamentous tissue implant
A tissue fixation system including a delivery tube and an elongated fastener with a loop at a proximal end and a distal end. A proximal end of an elongated curved needle is attached to the delivery tube. A distal end of the needle is configured to penetrate tissue. The needle includes an open channel sized to receive the elongated fastener with the loop located near the proximal end of the elongated curved needle and the distal end of the elongated fastener located near the distal end of the elongated curved needle. A capture needle is slidably positioned in the delivery tube to slide through the loop in the proximal end of the elongated fastener. The capture needle is configured to grasp the distal end of the elongated fastener and pull the distal end of the elongated fastener through the loop to cinch the elongated fastener.
1. A tissue fixation system comprising:
a delivery tube;
an elongated fastener comprising a loop at a proximal end and a distal end;
an elongated curved needle comprising a proximal end attached to the delivery tube, a distal end configured to penetrate tissue, and an open channel sized to receive the elongated fastener with the loop located near the proximal end of the elongated curved needle and the distal end of the elongated fastener located near the distal end of the elongated curved needle; and
a capture needle slidably positioned in the delivery tube to slide through the loop in the proximal end of the elongated fastener, the capture needle configured to mechanically engage with the distal end of the elongated fastener and pull the distal end of the elongated fastener through the loop to cinch the elongated fastener.
2. The system of claim 1 wherein the distal end of the elongated fastener comprises a loop.
3. The system of claim 1 wherein at least of the proximal end or the distal end of the elongated fastener comprises a molded structure.
4. The system of claim 1 wherein the proximal end and the distal end of the elongated fastener comprise mutually self-locking structures.
5. The system of claim 1 wherein one of the proximal end or the distal end of the elongated fastener comprises one of a single or a multi-filament structures, and the other of the proximal end or the distal end comprises interlock structures.
6. The system of claim 1 wherein the proximal end of the elongated fastener comprises a multi-filament sleeve and the distal portion of the elongated fastener comprises a plurality of interlock structures configured to self-lock with the multi-filament sleeve.
7. The system of claim 6 wherein the multi-filament sleeve is positioned around the distal end of the delivery tube before the capture needle grasps the distal end of the fastener.
8. The system of claim 6 wherein the interlock structures penetrate the multi-filament sleeve in a self-locking configuration.
9. The system of claim 6 wherein the distal portion of the elongated fastener comprises a monofilament and the interlock structures comprise a plurality of angled slits in the monofilament.
10. The system of claim 6 wherein the distal portion of the elongated fastener comprises a monofilament and the multi-filament sleeve extends along a portion of the monofilament in a self-locking configuration.
11. The system of claim 1 wherein the proximal end of the elongated fastener comprises a hollow sleeve with internal structures configured to mechanically couple with the distal end of the fastener.
12. The system of claim 1 wherein the elongated fastener includes rigid portions.
13. The system of claim 1 wherein the distal end of the elongated fastener deforms one of plastically or elastically.
14. The system of claim 1 wherein the elongated fastener comprises one or more of a bioabsorbable material, a non-bioabsorbable material, or a combination thereof.
15. The system of claim 1 wherein the elongated fastener is constructed of a material selected from the group consisting of polylactide, polyglycolide, polysaccharides, proteins, polyesters, polyhydroxyl kanoates, polyalkylene esters, polyamides, polycaprolactone, polyvinyl esters, polyamide esters, polyvinyl alcohols, polyanhydrides, polyolefin, PEEK, PTFE, and their copolymers, modified derivatives of caprolactone polymers, polytrimethylene carbonate, polyacrylates, polyethylene glycol, hydrogels, photo-curable hydrogels, terminal diols, metal fibers, and combinations thereof.
16. The system of claim 1 wherein the elongated fastener includes a Nitinol member configured to provide a resilient bias.
17. The system of claim 1 wherein the curved needle comprises a rolled sheet and the open channel is created by unrolling the penetrating portion.
18. The system of claim 1 wherein the capture needle comprises jaws configured to transition from an open position to a closed position.
19. The system of claim 1 comprising an energy source configured to bond distal end of the elongated fastener to the loop.
20. The system of claim 19 wherein the energy is one or more of heat and/or ultrasonic energy.