Electrical surgical instrument with optimal tissue compression
First Claim
1. A surgical device, comprising:
- a tissue compression device having a pair of opposing compression surfaces;
a mechanical binary-output electrical switch having open and closed electrical switching states initiated and changed solely by mechanical movements; and
an adjustable biasing device mechanically coupled to the switch and retaining the switch in one of the switching states until a force at least as great as a force imposed by the biasing device is imparted to the switch, wherein;
the switch is disposed in line with the tissue compression device to cause a proportional amount of force that is placed upon compressed tissue disposed between the opposing compression surfaces to be placed upon the switch; and
the biasing device is set to an amount of force that is proportional to an optimal tissue compression force of the compressed tissue when disposed between the opposing compression surfaces.
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Accused Products
Abstract
A surgical device, comprising a tissue compression device having a pair of opposing compression surfaces, a mechanical binary-output electrical switch having open and closed electrical switching states initiated and changed solely by mechanical movements, and an adjustable biasing device mechanically coupled to the switch and retaining the switch in one of the switching states until a force at least as great as a force imposed by the biasing device is imparted to the switch, wherein the switch is disposed in line with the tissue compression device to cause a proportional amount of force that is placed upon compressed tissue disposed between the opposing compression surfaces to be placed upon the switch, and the biasing device is set to an amount of force that is proportional to an optimal tissue compression force of the compressed tissue when disposed between the opposing compression surfaces.
89 Citations
21 Claims
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1. A surgical device, comprising:
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a tissue compression device having a pair of opposing compression surfaces; a mechanical binary-output electrical switch having open and closed electrical switching states initiated and changed solely by mechanical movements; and an adjustable biasing device mechanically coupled to the switch and retaining the switch in one of the switching states until a force at least as great as a force imposed by the biasing device is imparted to the switch, wherein; the switch is disposed in line with the tissue compression device to cause a proportional amount of force that is placed upon compressed tissue disposed between the opposing compression surfaces to be placed upon the switch; and the biasing device is set to an amount of force that is proportional to an optimal tissue compression force of the compressed tissue when disposed between the opposing compression surfaces. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A surgical device, comprising:
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an adjustable tissue compression device having a pair of opposing compression surfaces; a mechanical binary-output electrical switch having open and closed electrical switching states initiated and changed solely by mechanical movements; and an adjustable biasing device retaining the switch in one of the switching states until a force at least as great as a force imposed by the biasing device is imparted to the switch, wherein; the switch is disposed in line with the tissue compression device to cause a proportional amount of force that is placed upon compressed tissue disposed between the opposing compression surfaces to be placed upon the switch; and the biasing device is set to an amount of force that is proportional to an optimal tissue compression force of the compressed tissue when disposed between the opposing compression surfaces to cause a change of the switching state to occur when the switch experiences a force at least as great as the force imposed by the biasing device. - View Dependent Claims (9, 10, 11)
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12. A surgical device operable to carry out a surgical procedure, comprising:
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an electrically controlled surgical tissue compression device comprising an electrically operated tissue compression assembly having a pair of opposing compression surfaces; a feedback controller communicatively coupled to the tissue compression assembly; a mechanical binary-output electrical switch electrically connected to the feedback controller and having open and closed electrical switching states initiated and changed solely by mechanical movements; and an adjustable biasing device mechanically coupled to the switch and retaining the switch in one of the switching states until a force at least as great as a force imposed by the biasing device is imparted to the switch, wherein; the switch is disposed in line with the tissue compression device to cause a proportional amount of force that is placed upon compressed tissue disposed between the opposing compression surfaces to be placed upon the switch; the biasing device is set to an optimal tissue compression force; and
tissue is compressed between the opposing compression surfaces of the tissue compression device until a force imparted on the switch is at least as great as the optimal tissue compression force and, at such time, a state change occurs and communicates to the feedback controller that tissue is being compressed with the optimal tissue compression force. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A surgical device, comprising:
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an electrically controlled surgical endocutter operable to compress tissue between jaws thereof and to carry out a surgical procedure on the compressed tissue; a mechanical binary-output OTC electrical switch having OTC-off and OTC-reached electrical states initiated and changed solely by mechanical movements; an adjustable biasing device mechanically coupled to the switch, wherein; the switch is disposed in line with the endocutter to cause a force that is proportional to a force that is placed upon tissue compressed between the jaws to be placed upon the switch; the biasing device is set to an amount of force that is proportional to an optimal tissue compression force of the tissue compressed between the jaws and retains the switch in the OTC-off electrical state until a force at least as great as the optimal tissue compression force is imparted to the switch; and a surgical procedure is permitted to be carried out on the compressed tissue only after the switch changes to the OTC-reached electrical state.
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Specification