Surgical instrument and method
First Claim
1. A surgical instrument useful for laparoscopic surgery comprising an insulated shaft extending between proximal and distal ends,said proximal end having a control means for controlling clamping or cutting by the instrument and a connection to an electrosurgical radiofrequency power source;
- said insulated shaft having conductor means serving to conduct radiofrequency power from said connection to the distal end of the instrument;
said distal end being of general J-hook form defining a tissue-receiving pocket, the J-hook having a bottom with a proximal side which defines a tissue-engaging ledge;
said insulated shaft supporting tissue-engaging clamping or cutting members, said members movable axially, distally of the instrument toward said ledge in response to said control means for successively engaging said tissue by a first of said members at a first point along said ledge and subsequently by a second of said members at another point spaced along said ledge from the first engaged point, whereby tissue such as an artery or other tissue hooked in the pocket of said J-hook can be engaged on opposite surfaces for clamping or cutting while appropriate radiofrequency current from said power source is applied to said tissue.
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0 Petitions
Accused Products
Abstract
A surgical instrument useful for laparoscopic surgery comprising an insulated shaft, a control means and a connection to an electrosurgical radiofrequency power source, its distal end being of general J-hook form having a tissue-engaging ledge, and the shaft supporting a tissue-engaging clamping or cutting member movable toward the ledge in response to the control means so that an artery or other tissue in the pocket of the J-hook can be clamped or cut while radiofrequency current is applied. Instrument constructions disclosed incorporate one or two clamping members and a cutting member arranged such that with actuation, the clamping member(s) engages the ledge before the cutting member, and, by selective actuation of the electrosurgical power source, coagulation current can be applied while clamping an artery or other tissue against the ledge to stop flow of blood, and by further actuation of the control and suitable current to the cutting member, the artery or tissue may be cut. Selector means enable movement of one and prevent movement of one of the members during actuation; bipolar or monopolar energization is employed; the relatively long leg of the J-member has portals. Communicating through a lumen in the shaft for infusion or aspiration of fluid; the distal end surface of the J-hook defines a cutting edge for blunt dissection; and the control means comprises a single actuatable member by actuator rods for sealing clamp and cutting members, while a compression spring associated with the actuating rod of the sealing clamp member compresses when the clamp member is stopped, in clamping action upon the artery or tissue while cutting of tissue thereafter proceeds. A diamond film on tissue-engaging surfaces of a clamp, grasping or cutting surgical instrument improves heat transfer between tissue and instrument.
1447 Citations
29 Claims
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1. A surgical instrument useful for laparoscopic surgery comprising an insulated shaft extending between proximal and distal ends,
said proximal end having a control means for controlling clamping or cutting by the instrument and a connection to an electrosurgical radiofrequency power source; -
said insulated shaft having conductor means serving to conduct radiofrequency power from said connection to the distal end of the instrument; said distal end being of general J-hook form defining a tissue-receiving pocket, the J-hook having a bottom with a proximal side which defines a tissue-engaging ledge; said insulated shaft supporting tissue-engaging clamping or cutting members, said members movable axially, distally of the instrument toward said ledge in response to said control means for successively engaging said tissue by a first of said members at a first point along said ledge and subsequently by a second of said members at another point spaced along said ledge from the first engaged point, whereby tissue such as an artery or other tissue hooked in the pocket of said J-hook can be engaged on opposite surfaces for clamping or cutting while appropriate radiofrequency current from said power source is applied to said tissue. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 22, 23)
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2. A surgical instrument useful for laparoscopic surgery comprising an insulated shaft extending between proximal and distal ends,
said proximal end having a control means for controlling clamping or cutting by the instrument and a connection to an electrosurgical radiofrequency power source; -
said insulated shaft having conductor means serving to conduct radiofrequency power from said connection to the distal end of the instrument; said distal end being of general J-hook form defining a tissue-receiving pocket, the J-hook having a bottom with a proximal side which defines a tissue-engaging ledge; said insulated shaft supporting at leas one tissue-engaging clamping member and at least one tissue engaging cutting member each movable axially, distally of the instrument toward said ledge in response to said control means whereby tissue such as an artery or other tissue hooked in the pocket of said J-hook can be engaged on opposite surfaces for clamping or cutting while appropriate radiofrequency current from said power source is applied to said tissue. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 18, 19, 20, 21)
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24. A surgical instrument useful for laparoscopic surgery comprising an insulated shaft extending between proximal and distal ends,
said proximal end having a control means for controlling clamping or cutting by the instrument and a connection to an electrosurgical radiofrequency power source; - and
said insulated shaft supporting a tissue engaging clamping or cutting member near the distal end of said instrument moveable to effect clamping or cutting in response to said control means, and further said insulated shaft having conductor means serving to conduct radiofrequency power from said connection to the distal end of the instrument; said distal end being of general J-hook form defining a tissue-receiving pocket, the J-hook form having a bottom with a proximal side which defines a tissue-engaging ledge, said shaft comprises a hollow tube and a distal extremity of said tube has a plurality of portals, said hollow tube communicating to a proximal fluid connection for infusion or aspiration of fluid from a surgical site via the portals.
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25. A surgical instrument useful for laparoscopic surgery comprising an insulated shaft extending between proximal and distal ends,
said proximal end having a control means for controlling clamping or cutting by the instrument and a connection to an electrosurgical radiofrequency power source; - and
said insulated shaft supporting a tissue engaging clamping or cutting member near the distal end of said instrument moveable to effect clamping or cutting in response to said control means, and further said insulated shaft having conductor means serving to conduct radiofrequency power from said connection to the distal end of the instrument; said distal end being of general J-hook form defining a tissue-receiving pocket, the J-hook having a bottom with a proximal side which defines a tissue-engaging ledge, and wherein a distally disposed end surface of said J-hook is shaped to define a cutting edge for blunt dissection.
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26. A surgical instrument useful for laparoscopic surgery comprising an insulated shaft extending between proximal and distal ends,
said proximal end having a control means for controlling clamping or cutting by the instrument and a connection to an electrosurgical radiofrequency power source; - and
said insulated shaft supporting a tissue engaging clamping or cutting member near the distal end of said instrument moveable to effect clamping or cutting in response to said control means, and further said insulated shaft having conductor means serving to conduct radiofrequency power from said connection to the distal end of the instrument; said distal end being of general J-hook form defining a tissue-receiving pocket, the J-hook having a bottom with a proximal side which defines a tissue-engaging ledge, said shaft comprising a hollow tube and a distal extremity of said tube has a plurality of portals, said hollow tube communicating to a proximal fluid connection for infusion or aspiration of fluid from a surgical site via the portals, and wherein a distally disposed end surface of said J-hook is shaped to define a cutting edge for blunt dissection.
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- 27. A surgical instrument for laparoscopic electrosurgery having an elongated shaft extending between proximal and distal ends, said proximal end having a connection to an electrosurgical radiofrequency power source, said shaft having insulated conductor means serving to conduct radiofrequency power from said connection to the distal end of the instrument, at said distal end a tissue-engaging member has a tissue-engaging surface comprising a coated diamond film outer layer, said diamond film layer enabling improved heat transfer of heat generated during electrosurgery between said tissue and said tissue-engaging member.
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29. A surgical instrument useful for laparoscopic surgery comprising an insulated shaft extending between proximal and distal ends,
said proximal end having a control means for controlling clamping or cutting by the instrument and a connection to an electrosurgical radiofrequency power source; -
said insulated shaft having conductor means serving to conduct radiofrequency power from said connection to the distal end of the instrument; said distal end being of general J-hook form defining a tissue-receiving pocket, the J-hook having a bottom with a proximal side which defines a tissue-engaging ledge; said insulated shaft supporting a tissue-engaging clamping or cutting member movable axially, distally of the instrument toward said ledge in response to said control means whereby tissue such as an artery or other tissue hooked in the pocket of said J-hook can be engaged on opposite surfaces for clamping or cutting while appropriate radiofrequency current from said power source is applied to said tissue; wherein said shaft comprises a hollow tube, and a distal extremity of said tube has a plurality of portals, said hollow tube communicating to a proximal fluid connection for infusion or aspiration of fluid from a surgical site via the portals; said fluid connection having a Y-connection suitable for connection to both infusion means and aspiration means enabling alternate infusion and aspiration through said portals.
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Specification