Medical instrument to place a pursestring suture, open a hole and pass a guidewire
A therapeutic instrument for the ergonomic, effective and safe opening and closing of targeted remote tissue sites; includes a pistol grip style handle with a hand activated lever for needle deployment and, optionally, with features to control tissue cutting and guide wire installation; also incorporates a specialized elongated rigid or flexible instrument shaft, which enables vacuum assisted holding of tissue at a uniquely contoured distal tip, where placement of a suture in a purse string configures occurs along with, if desired, tissue cutting and guide wire passage.
1. A tissue suturing instrument comprising:
a handle having a single operating control on the handle;
an elongated body extending from the handle to a distal end;
a tip at a distal end of the elongated body;
a tissue receiving region in the tip;
at least one projection disposed along a first side of the tissue receiving region dividing the side of the tissue receiving region into first and second portions for lifting a tissue section away from a base of the tissue receiving region while leaving a substantially continuous center region;
first and second retractable needles coupled to the operating control and selectively simultaneously extending across the first and second portions of the tissue receiving region adjacent the at least one projection and through a lifted tissue section and simultaneously retracting there through; and
a suture having first and second ends disposed at a distal end of the tissue receiving region, the first and second ends engaging the first and second retractable needles when the needles are extended across the tissue receiving region, and being simultaneously carried proximally across the regions by the needles when the needles are retracted.
2. The tissue suturing instrument of claim 1 in which the tissue receiving region comprises:
a tissue receiving surface;
a suction source; and
at least one passage coupling the suction source to the surface and attracting tissue to the surface.
3. The tissue suturing instrument of claim 2 comprising a suction fitting on a proximal end of the elongated body communicating with the at least one passage.
4. The tissue suturing instrument of claim 1 in which the tissue receiving region is defined by two sides and two ends, the sides being longer than the ends.
5. The tissue suturing instrument of claim 4 comprising a second projection disposed along another of the sides.
6. The tissue suturing instrument of claim 5 comprising two projections, one disposed along each of the two sides.
7. The tissue suturing instrument of claim 6 in which the two projections are rounded.
8. A tissue suturing instrument as set forth in claim 1 further comprising:
a movable cutter disposed in the tissue receiving region.
9. A tissue suturing instrument as set forth in claim 8 in which the cutter is arranged generally perpendicular to the tissue receiving region.
10. A tissue suturing instrument as set forth in claim 8 in which the cutter is arranged generally parallel to the tissue receiving region.
11. A tissue suturing instrument as set forth in claim 8 in which the tissue receiving surface comprises a slot and the cutter comprises a follower riding in the slot.
12. The tissue suturing instrument as set forth in claim 8 in which the cutter comprises a blade attached to a cutter shuttle.
13. The tissue suturing instrument of claim 12 in which the blade comprises a sharpened proximal surface.
14. The tissue suturing instrument of claim 13 in which the blade comprises a sharpened tip.
15. The tissue suturing instrument of claim 8 comprising a second control on the handle, linked to the cutter operative to move the cutter distally and proximately in response to operator input from the handle.
16. The tissue suturing instrument of claim 15 in which the second control comprises a longitudinally reciprocating actuator.
17. The tissue suturing instrument of claim 16 in which the longitudinally reciprocating actuator comprises a hollow tube.
18. The tissue suturing instrument of claim 8 in which the tissue receiving region comprises a longitudinal slot, and the movable cutter moves in the slot.
19. The tissue suturing instrument of claim 18 in which the tissue receiving region comprises
first and second tissue receiving surfaces on opposite sides of the slot;
a suction source; and
at least one passage coupling the suction source to each of the first and second tissue receiving surfaces and attracting tissue to the surfaces.
20. The tissue suturing instrument of claim 19 comprising first and second passages coupling the suction source to the first and second tissue receiving surfaces respectively.
21. The tissue suturing instrument of claim 8 in which the movable cutter comprises a channel for passing a guide wire.
22. The tissue suturing instrument of claim 1 comprising a channel extending through the elongated body from the distal end to the handle and in which the suture is partially disposed in the channel.
23. The tissue suturing instrument of claim 22 comprising a chamber in the handle having a transparent window, the chamber containing a portion of the suture.
24. The tissue suturing instrument of claim 1 in which the elongated body comprises a flexible body.
25. A tissue suturing instrument comprising:
a handle having an operating lever on the handle;
an elongated body extending from the handle to a distal end;
a tip at a distal end of the elongated body;
a tissue receiving region in the tip;
at least one projection dividing the tissue receiving region into first and second portions;
first and second retractable needles coupled to the operating lever and selectively extending across the first and second portions of the tissue receiving region and retracting there through;
a movable cutter disposed in the tissue receiving region
a control on the handle having a longitudinally reciprocating actuator and a hollow tube;
the control linked to the cutter operative to move the cutter distally and proximately in response to operator input from the handle and in which the actuator comprises a knob on the proximal end thereof having an opening for receiving a guide wire; and
a suture having first and second ends disposed at the distal end of the tissue receiving region, the first and second ends engaging the first and second retractable needles when the needles are extended across the tissue receiving region, and being simultaneously carried proximally across the regions by the needles when the needles are retracted.
26. The tissue suturing instrument of claim 25 in which the knob comprises a seal for ceiling to the guide wire.
27. A tissue suturing instrument comprising:
a handle having an operating lever on the handle;
an elongated body extending from the handle to a distal end;
a tip at a distal end of the elongated body;
a tissue receiving region in the tip;
at least one projection dividing the tissue receiving region into first and second portions;
first and second retractable needles coupled to the operating lever and selectively extending across the first and second portions of the tissue receiving region and retracting there through;
a movable cutter disposed in the tissue receiving region; the cutter including a channel for passing a guide wire, the channel having an upturned end portion located distally of the cutter for directing a guide wire away from the tissue receiving region; and
a suture having first and second ends disposed at the distal end of the tissue receiving region, the first and second ends engaging the first and second retractable needles when the needles are extended across the tissue receiving region, and being simultaneously carried proximally across the regions by the needles when the needles are retracted.