Self-powered surgical fastening instrument
First Claim
1. A self-powered surgical fastening instrument for performing a surgical fastening procedure at a location remote from the location at which the instrument is manipulated comprising:
- an elongated member having opposite distal and proximal ends;
means located at the distal end of the elongated member for performing the surgical fastening procedure and including self-powering means for providing the force required to perform at least part of the surgical fastening procedure and further including releasable retention means for retaining the self-powering means in a restrained position and for controlling the release of the self-powering means;
control means mounted on the proximal end of the elongated member; and
means located within the elongated member for transmitting control forces between the control means and the releasable retention means so taht the self-powering means is remotely controlled by the control means.
1 Assignment
0 Petitions
Accused Products
Abstract
An instrument and method for performing a surgical fastening procedure at a location remote from the location at which the instrument is manipulated. The instrument is at least partly self-powered by self-powering apparatus (e.g., a prestressed spring) adjacent the location at which the fastening procedure is performed, the self-powering apparatus being controlled from the location at which the instrument is manipulated. The relatively large forces required for the surgical fastening procedure are confined to a relatively small portion of the instrument adjacent the location at which the fastening procedure is performed, thereby reducing the cost of the instrument as a whole and making it economical to provide as a disposable item.
2119 Citations
24 Claims
-
1. A self-powered surgical fastening instrument for performing a surgical fastening procedure at a location remote from the location at which the instrument is manipulated comprising:
-
an elongated member having opposite distal and proximal ends; means located at the distal end of the elongated member for performing the surgical fastening procedure and including self-powering means for providing the force required to perform at least part of the surgical fastening procedure and further including releasable retention means for retaining the self-powering means in a restrained position and for controlling the release of the self-powering means; control means mounted on the proximal end of the elongated member; and means located within the elongated member for transmitting control forces between the control means and the releasable retention means so taht the self-powering means is remotely controlled by the control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A surgical instrument for performing anastomosis of hollow tubular body organs comprising:
-
an elongated member having opposite distal and proximal ends; means mounted on the distal end of the elongated member for first approximating the tissue to be anastomosed and then stapling the approximated tissue together, the staples being driven by self-powering means included in the means mounted on the distal end of the elongated member; releasable retention means included in the means mounted on the distal end of the elongated member for controlling the release of the self-powering means and for confining the forces exerted by the self-powering means to the means mounted on the distal end of the elongated member; control means mounted on the proximal end of the elongated member; and means located within the elongated member for connecting the control means to the releasable retention means so that the self-powering means is remotely controlled by the control means. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 23, 24)
-
-
21. A surgical instrument for performing anastomosis of hollow tubular body organs comprising:
-
(A) an elongated member having opposite distal and proximal ends; (B) first means mounted on the distal end of the elongated member for first approximating the tissue to be anastomosed and then stapling the approximated tissue together, the first means including (1) a staple holder containing a plurality of staples, (2) self-powering means comprising a prestressed coil spring for driving the staples from the staple holder, (3) an anvil movable relative to the staple holder for approximating the tissue to be anastomosed between the anvil and the staple holder and for crimping the staples driven from the staple holder, (4) means for positioning the anvil relative to the staple holder, and (5) releasable retention means comprising means for (a) maintaining the spring in prestressed condition, (b) controlling the release of the self-powering means, and (c) confining the forces exerted by the self-powering means to the first means; (C) control means mounted on the proximal end of the elongated member and including anvil control means for controlling the means for positioning the anvil; and (D) means located within the elongated member for connecting the control means to the releasable retention means so that the self-powering means is remotely controlled by the control means; (E) the releasable retention means further comprising (1) a cam ring having a plurality of circumferentially extending cam surfaces, and (2) a cam follower ring having a plurality of circumferentially extending cam follower surfaces, each of which contacts a respective one of the cam surfaces, one of the cam ring and cam follower ring being connected to one end of the spring, the cam ring and cam follower ring being rotatable relative to one another so that the cam followers move along their respective cam surfaces, and the cam surfaces being inclined in the direction of movement of the cam followers so that movement of the cam followers tends to release the spring and so that only a relatively small force applied by the control means is required to move the cam followers relative to the cam surfaces to release the spring. - View Dependent Claims (22)
-
Specification