Surgical instrument handpiece with resiliently biased coupling to modular shaft and end effector
First Claim
1. A surgical instrument comprising:
- (a) a body assembly comprising;
i. a housing defining a cavity having a distal cavity portion and a proximal cavity portion, wherein the proximal cavity portion is configured to receive an ultrasonic transducer, andii. a resilient member, wherein at least a portion of the resilient member is positioned within the distal cavity portion and is configured to selectively move between an engagement position and a disengagement position; and
(b) a transmission assembly comprising;
i. a proximal shaft portion having a proximal end configured to receive the ultrasonic transducer extending proximally therefrom, wherein the proximal shaft portion is configured to be received within the distal cavity portion of the housing,ii. a coupling feature disposed at the proximal shaft portion,iii. a distal shaft assembly extending distally relative to the coupling feature, andiv. an end effector coupled to a distal end of the distal shaft assembly;
wherein the resilient member is configured to selectively engage the coupling feature to mechanically secure at least a part of the transmission assembly to the body assembly in the engagement position, and the resilient member is further configured to selectively disengage from the coupling feature to mechanically release at least the part of the transmission assembly to the body assembly, andwherein the resilient member in the engagement position extends through the housing and engages the coupling feature such that each of the proximal end of the proximal shaft portion and the proximal cavity portion of the housing remain configured to receive the ultrasonic transducer for operating the surgical instrument.
4 Assignments
0 Petitions
Accused Products
Abstract
An ultrasonic surgical instrument includes a reusable handle assembly and a removable and disposable transmission assembly. The handle assembly includes a trigger, a housing having a distal aperture formed in a distal end of the housing, a button disposed on a top surface of the housing, and a biasing member in communication with the button. The transmission assembly includes a proximal shaft, a rotator knob having a coupling feature, a distal shaft assembly extending distally from the proximal shaft, and an end effector at the distal end of the distal shaft assembly. The biasing member of the handle assembly is adjustably coupled to the coupling feature of the transmission assembly. Another version includes a movable yoke configured to engage an inner tube of the transmission assembly. Yet another version includes a waveguide of the transmission assembly non-threadably coupled to a transducer via a biasing force.
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Citations
14 Claims
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1. A surgical instrument comprising:
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(a) a body assembly comprising; i. a housing defining a cavity having a distal cavity portion and a proximal cavity portion, wherein the proximal cavity portion is configured to receive an ultrasonic transducer, and ii. a resilient member, wherein at least a portion of the resilient member is positioned within the distal cavity portion and is configured to selectively move between an engagement position and a disengagement position; and (b) a transmission assembly comprising; i. a proximal shaft portion having a proximal end configured to receive the ultrasonic transducer extending proximally therefrom, wherein the proximal shaft portion is configured to be received within the distal cavity portion of the housing, ii. a coupling feature disposed at the proximal shaft portion, iii. a distal shaft assembly extending distally relative to the coupling feature, and iv. an end effector coupled to a distal end of the distal shaft assembly; wherein the resilient member is configured to selectively engage the coupling feature to mechanically secure at least a part of the transmission assembly to the body assembly in the engagement position, and the resilient member is further configured to selectively disengage from the coupling feature to mechanically release at least the part of the transmission assembly to the body assembly, and wherein the resilient member in the engagement position extends through the housing and engages the coupling feature such that each of the proximal end of the proximal shaft portion and the proximal cavity portion of the housing remain configured to receive the ultrasonic transducer for operating the surgical instrument. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A surgical instrument comprising:
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(a) a body housing, wherein the body housing has a distal end defining an opening; (b) a resilient member having a pair of sides connected by an intermediate portion extending therebetween, the pair of sides and the intermediate portion defining a U-shape, wherein the resilient member is configured to selectively move between an engagement position and a disengagement position, wherein the pair of sides are configured to be resiliently spread apart from the engagement position to the disengagement position; and (c) a shaft assembly, wherein the shaft assembly comprises; (i) a distal end, wherein the distal end of the shaft assembly comprises an end effector, and (ii) a proximal end, wherein the proximal end of the shaft assembly is sized and configured for insertion in the opening of the distal end of the body housing, wherein the proximal end includes a coupling feature, wherein the pair of sides of the resilient member are configured to selectively retain the shaft assembly relative to the body housing by simultaneously engaging a pair of opposing lateral sides of the coupling feature in the engagement position, and wherein the pair of sides of the resilient member are configured to selectively release the shaft assembly relative to the body housing by simultaneously spreading apart the pair of sides of the resilient member in order to disengage from the pair of opposing lateral sides of the coupling feature in the disengagement position. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification