Electrosurgical instrument
First Claim
1. An electrosurgical instrument comprising:
- a handpiece,an electrode connected to the handpiece,a shaft which surrounds the electrode and is held in the handpiece, andan operating mechanism which comprises at least one rotary knob arranged on the handpiece,wherein the shaft is configured to be axially movable relative to the electrode and a shear force is applied to the shaft by operating the rotary knob, wherein the handpiece has a brake mechanism configured to exert a braking force on the shaft, and the operating mechanism forms a transmission gear which is connected to the shaft for transferring the shear force;
wherein the electrode and the shaft are each arranged rotatably about their longitudinal axis relative to the handpiece, the electrode being guided through a sliding sleeve which connects the shaft and the electrode in a torque-resistant and axially movable manner.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrosurgical instrument, in particular for argon plasma coagulation, includes a handpiece 10, an electrode (11) connected to the handpiece (10), a shaft (12) which surrounds the electrode (11) and is held in the handpiece (10), and an operating mechanism (13), which comprises at least one rotary knob (14) arranged on the handpiece (10). The shaft (12) is axially movable relative to the electrode (11) and a shear force can be applied to it by operating the rotary knob (14). The handpiece (10) has a brake device which exerts a braking force on the shaft (12), and the operating mechanism (13) forms a transmission gear (15) which is connected to the shaft (12) for transferring the shear force.
15 Citations
15 Claims
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1. An electrosurgical instrument comprising:
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a handpiece, an electrode connected to the handpiece, a shaft which surrounds the electrode and is held in the handpiece, and an operating mechanism which comprises at least one rotary knob arranged on the handpiece, wherein the shaft is configured to be axially movable relative to the electrode and a shear force is applied to the shaft by operating the rotary knob, wherein the handpiece has a brake mechanism configured to exert a braking force on the shaft, and the operating mechanism forms a transmission gear which is connected to the shaft for transferring the shear force; wherein the electrode and the shaft are each arranged rotatably about their longitudinal axis relative to the handpiece, the electrode being guided through a sliding sleeve which connects the shaft and the electrode in a torque-resistant and axially movable manner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electrosurgical instrument comprising:
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a handpiece, an electrode connected to the handpiece, a shaft which surrounds the electrode and is held in the handpiece, and an operating mechanism which comprises at least one rotary knob arranged on the handpiece, the shaft being axially movable relative to the electrode and a shear force is applied to the shaft by operating the rotary knob, wherein the electrode and the shaft are each arranged rotatably about their longitudinal axis relative to the handpiece, the electrode being guided through a sliding sleeve which connects the shaft and the electrode in a torque-resistant and axially movable manner. - View Dependent Claims (15)
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Specification