Tissue fixation assembly having prepositioned fasteners and method
A tissue fastener assembly delivers a fastener for deployment. The assembly includes a fastener including a first member, a second member, the first and second members having first and second ends, and a flexible connecting member fixed to each of the first and second members intermediate the first and second ends and extending between the first and second members. The first member has a longitudinal axis and a through channel along the axis. The assembly further includes a deployment wire slidingly received within the through channel of the first member that pierces into the tissue and guides the first member through the tissue, a guide structure defining a lumen that receives the fastener and deployment wire and guides the deployment wire and fastener to the tissue, and a fastener configuration structure that orientates the second member in a predetermined position relative to the first member within the lumen for dependable deployment.
1 . A fastener assembly comprising:
a fastener including a first member, a second member, the first and second members having first and second ends, and a flexible connecting member fixed to each of the first and second members intermediate the first and second ends and extending between the first and second members, the first member having a longitudinal axis and a through channel along the axis;
a deployment wire slidingly received within the through channel of the first member that pierces into the tissue and guides the first member through the tissue;
a guide structure defining a lumen that receives the fastener and deployment wire and guides the deployment wire and fastener to the tissue; and
a fastener configuration structure that orientates the second member in a predetermined position relative to the first member within the lumen.
2 . The assembly of claim 1 , wherein the fastener configuration structure orientates the second member along side the first member.
3 . The assembly of claim 1 , wherein the fastener configuration structure orientates the second member along side the first member with the connecting member between the first and second members.
4 . The assembly of claim 1 , wherein the fastener configuration structure orientates the second member along side the first member with the connecting member between the first and second members and with the second member trailing the first member with respect to the tissue.
5 . The assembly of claim 1 , wherein the first member of the fastener has a lengthwise slit communicating with the through channel and wherein the deployment wire is received into the through channel through the slit.
6 . The assembly of claim 5 , further comprising a fastener loader that guides the first member slit into engagement with the deployment wire.
7 . The assembly of claim 6 , wherein the fastener loader is arranged to hold a plurality of the fasteners.
8 . The assembly of claim 1 , wherein the fastener configuration structure comprises a wall converging with the deployment wire and an outlet communicating with the lumen.
9 . The assembly of claim 8 , wherein the wall converges with the deployment wire in a direction towards the tissue so that, when the second member engages the wall, the wall directs the second member to the predetermined position relative to the first member.
10 . The assembly of claim 9 , wherein the wall orientates the second member along side the first member.
11 . The assembly of claim 9 , wherein the wall orientates the second member along side the first member with the connecting member between the first and second members.
12 . The assembly of claim 9 , wherein the wall orientates the second member along side the first member with the connecting member between the first and second members and with the second member trailing the first member with respect to the tissue.
13 . A fastener assembly comprising:
a fastener including a first member, a second member, the first and second members having first and second ends, and a flexible connecting member fixed to each of the first and second members intermediate the first and second ends and extending between the first and second members, the first member having a longitudinal axis and a through channel along the axis;
a deployment wire slidingly received within the through channel of the first member that pierces into the tissue and guides the first member through the tissue; and
a guide structure defining a lumen that receives the fastener and deployment wire and guides the deployment wire and fastener to the tissue, the second member of the fastener being along side the first member with the connecting member between the first and second members within the lumen.
14 . The assembly of claim 13 , wherein the second member is along side the first member with the connecting member between the first and second members and with the second member trailing the first member with respect to the tissue.
15 . The assembly of claim 14 , further comprising a fastener configuration structure that orientates the second member along side the first member with the connecting member between the first and second members and with the second member trailing the first member with respect to the tissue within the lumen.
16 . The assembly of claim 15 , wherein the fastener configuration structure comprises a funnel-shaped member having a wall converging with the deployment wire and an outlet communicating with the lumen.
17 . The assembly of claim 16 , wherein the wall converges with the deployment wire in a direction towards the tissue so that, when the second member engages the wall, the wall directs the second member along side the first member with the connecting member between the first and second members and with the second member trailing the first member with respect to the tissue.
18 . The assembly of claim 17 , further comprising a pusher that pushes the fastener along the deployment wire towards the tissue to cause the second member to engage the wall, to cause the wall to direct the second member along side the first member with the connecting member between the first and second members and with the second member trailing the first member with respect to the tissue, and to cause the fastener to exit the outlet into the lumen as the pusher pushes the fastener along the deployment wire towards the tissue.
19 . The assembly of claim 13 , wherein the first member of the fastener has a lengthwise slit communicating with the through channel and wherein the deployment wire is received into the through channel through the slit.
20 . The assembly of claim 19 , further comprising a fastener loader that guides the first member slit into engagement with the deployment wire.
21 . The assembly of claim 20 , wherein the fastener loader is arranged to hold a plurality of the fasteners.
22 . A method comprising:
providing a fastener including a first member, a second member, the first and second members having first and second ends, and a flexible connecting member fixed to each of the first and second members intermediate the first and second ends and extending between the first and second members, the first member having a longitudinal axis and a through channel along the axis;
mounting the fastener onto a deployment wire with the deployment wire slidingly received by the through channel of the first member;
translating the fastener to within a lumen dimensioned to receive the fastener and deployment wire and which guides the deployment wire and fastener to tissue; and
orientating the second member in a predetermined position relative to the first member as the fastener is translated to within the lumen.
23 . The method of claim 22 , wherein the orientating step comprises positioning the second member along side the first member.
24 . The method of claim 22 , wherein the orientating step comprises orientating the second member along side the first member with the connecting member between the first and second members.
25 . The method of claim 22 , wherein the orientating step comprises orientating the second member along side the first member with the connecting member between the first and second members and with the second member trailing the first member with respect to the tissue.
26 . The method of claim 22 , wherein the first member of the fastener has a lengthwise slit communicating with the through channel and wherein the mounting step includes causing the deployment wire to be received within the through channel through the slit.