Suture passer and method
Instruments and techniques to pass a suture are presented. The instruments and techniques are particularly useful where access to confined spaces and the ability to pass a suture through difficult to penetrate materials are needed. The instruments and techniques are particularly useful in surgery of the hands and feet.
1. A suture passer comprising:
a housing defining a motion axis extending proximally to distally;
a needle mounted for translation along the motion axis between a first proximal position and a second distal position;
a foot mounted to the housing, the foot having a distal portion with a proximal facing surface, the distal portion including a needle receiving opening in the proximal facing surface aligned with the motion axis and able to receive the needle in the second distal position, the proximal facing surface being defined by a plurality of proximally projecting members, wherein the foot contains no member movable relative to the proximal facing member in opposing clamping relationship to the plurality of projecting members; and
a suture path including opposed lateral grooves formed into opposed lateral sides of the foot, the suture path extending generally in a length direction and connected by a distal groove extending generally in a width direction that is not the length direction, the distal groove extending from a first of the opposed lateral grooves toward a second of the opposed lateral grooves, each lateral groove being bounded on three sides, wherein the distal portion of the foot further comprises a distal facing surface opposite the proximal facing surface, and wherein each lateral groove is able to receive a suture such that the portion of the suture extending along the suture path is covered when viewed normal to the proximal facing surface.
2. The suture passer of claim 1 wherein the proximally projecting members are ridges separated by grooves.
3. The suture passer of claim 1 wherein the foot further includes a proximal portion with a distal facing surface extending along a proximal portion axis diverging from the motion axis, the proximal portion axis forming a proximal angle relative to the motion axis, the distal portion being connected to the proximal portion, the proximal facing surface of the distal portion extending along a distal portion axis converging distally with the motion axis, the distal portion axis forming a distal angle relative to the motion axis, the distal angle being in the range of 25 to 65 degrees.
4. The suture passer of claim 1 wherein the foot defines a foot side plane in which the foot projects a hook shape having a hook interior, and wherein the suture path is able to receive a suture such that the suture does not extend into the hook interior as viewed normal to the foot side plane.
5. The suture passer of claim 1 wherein the foot includes a proximal portion and an offset portion, and wherein the distal groove extends across at least a portion of the needle receiving opening.
6. The suture passer of claim 5 wherein the offset portion has a length, and the length is manufactured to accommodate a particular surgical site.
7. The suture passer of claim 5 wherein the proximally projecting members are selected from the group consisting of spikes, ridges, and teeth.
8. The suture passer of claim 5 wherein the distal portion has a length and a width, and the length is greater than the width.
9. The suture passer of claim 5 wherein the lateral sides are parallel, converging, or diverging.
10. The suture passer of claim 5 wherein the foot further comprises a suture cleat, and wherein the suture cleat further comprises a needle groove coaxial with the needle receiving opening.
11. The suture passer of claim 5 wherein the proximal portion extends distally from the housing at a first angle relative to the motion axis.
12. The suture passer of claim 11 wherein the first angle is in the range of 70 to 110 degrees.
13. The suture passer of claim 5 wherein the offset portion extends distally from the proximal portion at an offset angle.
14. The suture passer of claim 13 wherein the offset angle is in the range of 70 to 110 degrees.
15. The suture passer of claim 5 wherein the distal portion extends distally from the offset portion along a distal portion axis converging toward the motion axis at a second angle relative to the motion axis.
16. The suture passer of claim 15 wherein the second angle is in the range of 0 to 90 degrees.
17. The suture passer of claim 15 wherein the second angle is in the range of 25 to 65 degrees.
18. The suture passer of claim 5 wherein the proximally projecting members comprise a plurality of ridges running along the width direction.
19. The suture passer of claim 18 wherein the plurality of ridges are separated by grooves.