RF tissue sealer, shear grip, trigger lock mechanism and energy activation
First Claim
1. An electrosurgical instrument for operating on tissue, comprising:
- a first arm, comprising a first handle and a first jaw;
a second arm pivotally connected to the first arm, the second arm comprisinga second handle;
a second jaw comprising an electrode operable to deliver radio frequency (RF) energy to tissue;
a knife configured to translate within slots defined in the first and second jaws; and
a push plate operably connected to the knife such that a proximal motion of the push plate extends the knife and a distal motion of the push plate retracts the knife; and
a trigger lock mechanism comprising a switch arm pivotally mounted to the first arm, the switch arm comprising a first end and a second end, wherein the first end extends below the first arm and is received by a slot integrated into a lower arm of the switch arm, the trigger lock mechanism configured to prevent the first and second jaws from being opened.
4 Assignments
0 Petitions
Accused Products
Abstract
A variety of surgical instruments include one or more elements that transmit RF energy to tissue. Some such instruments comprise a pair of jaws that open and close on tissue, with conductive tissue contact surfaces that are operable to weld tissue clamped between the jaws. Some surgical instruments also include a translating tissue cutting element. Some such instruments may be in the form of forceps having a scissor grip. Forceps type instruments may in some instances provide a feature that allows the jaws of the forceps to be locked on tissue, so that the operator can remove his or her hands from the instrument. In such an instrument it may also be desirable to provide a circuit that is activated only when the forceps are closed and sufficient pressure is applied to the tissue between the jaws of the device.
1016 Citations
25 Claims
-
1. An electrosurgical instrument for operating on tissue, comprising:
-
a first arm, comprising a first handle and a first jaw; a second arm pivotally connected to the first arm, the second arm comprising a second handle; a second jaw comprising an electrode operable to deliver radio frequency (RF) energy to tissue; a knife configured to translate within slots defined in the first and second jaws; and a push plate operably connected to the knife such that a proximal motion of the push plate extends the knife and a distal motion of the push plate retracts the knife; and a trigger lock mechanism comprising a switch arm pivotally mounted to the first arm, the switch arm comprising a first end and a second end, wherein the first end extends below the first arm and is received by a slot integrated into a lower arm of the switch arm, the trigger lock mechanism configured to prevent the first and second jaws from being opened. - View Dependent Claims (2, 3, 4, 5, 6, 9)
-
-
7. An electrosurgical instrument for operating on tissue, comprising:
-
a first arm, comprising a first handle and a first jaw; a second arm pivotally connected to the first arm, the second arm comprising; a second handle; a second jaw comprising an electrode operable to deliver radio frequency (RF) energy to tissue; a knife configured to translate within slots defined in the first and second jaws; and a push plate operably connected to the knife such that a proximal motion of the push plate extends the knife and a distal motion of the push plate retracts the knife; and a trigger lock mechanism comprising a switch arm pivotally mounted to the first arm, the switch arm comprising a first end and a second end, wherein the first end extends below the first arm, the trigger lock mechanism configured to prevent the first and second jaws from being opened; wherein the first end of the switch arm comprises a lock button pivotally mounted inside the first handle and wherein the switch arm is movable between a first position and a second position, wherein the second position prevents the switch arm from returning to a neutral position. - View Dependent Claims (8)
-
-
10. An electrosurgical instrument for operating on tissue, comprising:
-
a first arm comprising a first handle and a first jaw; a second arm pivotally connected to the first arm, the second arm comprising; a second handle; a second jaw comprising an electrode operable to deliver radio frequency (RF) energy to tissue; a knife configured to translate within slots defined in the first and second jaws; a push plate operably connected to the knife such that a proximal motion of the push plate extends the knife and a distal motion of the push plate retracts the knife; and a trigger lock mechanism configured to prevent the first and second jaws from being opened; a switch arm; and a switch arm slot comprising a base; the second arm further comprising a compression circuit and a compression button for activating the compression circuit, wherein the compression button is located at the base of the switch arm slot and is activated by pressure applied by the switch arm. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. An electrosurgical instrument for operating on tissue, comprising:
-
a first arm comprising a first handle and a first jaw; a second arm pivotally connected to the first arm, the second arm comprising; a second handle; a second jaw comprising an electrode operable to deliver radio frequency (RF) energy to tissue; a knife configured to translate within slots defined in the first and second jaws; a pull ring; a push plate operably connected to the knife such that a proximal motion of the push plate extends the knife and a distal motion of the pull ring retracts the knife; a compression circuit; and a compression circuit button configured to activate the compression circuit. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
-
Specification