ELECTROSURGICAL SYSTEM
First Claim
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1. An electrosurgical tool comprising:
- a handle assembly comprising;
a stationary handle; and
an actuation handle movably coupled to the stationary handle;
an elongate shaft extending distally from the handle, the elongate shaft having a proximal end and a distal end defining a central longitudinal axis therebetween;
a jaw assembly positioned on the distal end of the elongate shaft, the jaw assembly comprising;
a first jaw having an inner surface, an outer surface, and at least one electrode disposed on the inner surface; and
a second jaw having an inner surface, an outer surface, and at least one electrode disposed on the inner surface;
wherein the jaw assembly is actuatable by movement of the actuation handle from an open configuration in which the inner surface of the first jaw is spaced apart from the inner surface of the second jaw to a closed configuration in which the inner surface of the first jaw is proximate the inner surface of the second jaw; and
a force regulation mechanism coupling the handle assembly to the jaw assembly, the force regulation assembly configured such that in the closed configuration, the jaw assembly delivers a gripping force between the first jaw and the second jaw between a predetermined minimum force and a predetermined maximum force.
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Abstract
An electrosurgical tool can be used to fuse tissue. The electrosurgical tool can include a jaw assembly, an elongate shaft, and a handle assembly. Actuation of the handle assembly can actuate the jaw assembly. The elongate shaft can be rotatable without disrupting electrical connection to the jaw assembly. The electrosurgical tool can include a cutting blade to separate fused tissue. The electrosurgical tool can also include a jaw assembly configuration or an exterior cutting electrode to improve surgical access with the tool.
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Citations
28 Claims
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1. An electrosurgical tool comprising:
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a handle assembly comprising; a stationary handle; and an actuation handle movably coupled to the stationary handle; an elongate shaft extending distally from the handle, the elongate shaft having a proximal end and a distal end defining a central longitudinal axis therebetween; a jaw assembly positioned on the distal end of the elongate shaft, the jaw assembly comprising; a first jaw having an inner surface, an outer surface, and at least one electrode disposed on the inner surface; and a second jaw having an inner surface, an outer surface, and at least one electrode disposed on the inner surface; wherein the jaw assembly is actuatable by movement of the actuation handle from an open configuration in which the inner surface of the first jaw is spaced apart from the inner surface of the second jaw to a closed configuration in which the inner surface of the first jaw is proximate the inner surface of the second jaw; and a force regulation mechanism coupling the handle assembly to the jaw assembly, the force regulation assembly configured such that in the closed configuration, the jaw assembly delivers a gripping force between the first jaw and the second jaw between a predetermined minimum force and a predetermined maximum force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electrosurgical tool comprising:
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a handle assembly comprising a moveable actuation handle; an elongate shaft extending distally from the handle, the elongate shaft having a proximal end and a distal end defining a central longitudinal axis therebetween; and a jaw assembly positioned on the distal end of the elongate shaft, the jaw assembly comprising; a first jaw having an inner surface, an outer surface, a proximal end and a distal end, and at least one electrode disposed on the inner surface; a second jaw having an inner surface, an outer surface, a proximal end and a distal end and at least one electrode disposed on the inner surface; and a blade advanceable along the inner surface of the first jaw along a cutting path defined between a retracted position adjacent the proximal end and an advanced position between the proximal end and the distal end; wherein the jaw assembly is actuatable from an open configuration to a closed configuration by movement of the actuation handle; and wherein the at least one electrode on the first jaw and the at least one electrode on the second jaw define a sealing area enclosing the cutting path of the blade. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An electrosurgical tool comprising:
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a handle assembly; an elongate shaft extending distally from the handle assembly, the shaft having a proximal end and a distal end defining a central longitudinal axis therebetween; and a jaw assembly positioned on the distal end of the elongate shaft, the jaw assembly comprising; a first jaw having an inner surface, an outer surface, a proximal end and a distal end, and at least one fusion electrode disposed on the inner surface; a second jaw having an inner surface, an outer surface, a proximal end and a distal end and at least one fusion electrode disposed on the inner surface and a cutting electrode disposed on the outer surface. - View Dependent Claims (27, 28)
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Specification