Two-stage switch for cordless hand-held ultrasonic cautery cutting device
First Claim
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1. A surgical device, comprising:
- a control circuit operable to carry out at least two operational conditions of the surgical device; and
a two-stage switch electrically connected to the control circuit, a first stage of the switch effecting a first of the at least two operational conditions and a second stage of the switch effecting a second of the at least two operational conditions that is different from the first operational condition, the two-stage switch having a variable resistance such that;
the first stage occurs when a first depression force is applied to the switch;
the second stage occurs when a second depression force greater than the firstdepression force is applied to the switch; and
a holding force lower than at least the second depression force is required to maintain the switch in the second stage.
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Abstract
An ultrasonic, self-powered surgical device includes a handle, a self-contained power supply associated with the handle, and a control circuit disposed within the handle and/or the power supply. The control circuit is operable to carry out at least two operational conditions of the surgical device. A two-stage switch is electrically connected to the control circuit and effects the at least two operational conditions of the surgical device. A first stage of the switch effects a first of the at least two operational conditions and a second stage of the switch effects a second of the at least two operational conditions that is different from the first operational condition.
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Citations
25 Claims
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1. A surgical device, comprising:
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a control circuit operable to carry out at least two operational conditions of the surgical device; and a two-stage switch electrically connected to the control circuit, a first stage of the switch effecting a first of the at least two operational conditions and a second stage of the switch effecting a second of the at least two operational conditions that is different from the first operational condition, the two-stage switch having a variable resistance such that; the first stage occurs when a first depression force is applied to the switch; the second stage occurs when a second depression force greater than the first depression force is applied to the switch; and a holding force lower than at least the second depression force is required to maintain the switch in the second stage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A surgical device, comprising:
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a control circuit operable to carry out at least two operational conditions of the surgical device; and a two-stage switch electrically connected to the control circuit, a first stage of the switch effecting a first of the at least two operational conditions and a second stage of the switch effecting a second of the at least two operational conditions that is different from the first operational condition, whereby the two-stage switch is operable to switch to the first stage and to the second stage by changing between first and second positions, the two-stage switch having a variable resistance such that; the switch is in the first position when a first depression force is applied to the switch; the switch is in the second position when a second depression force greater than the first depression force is applied to the switch; and a holding force lower than at least the second depression force is required to maintain the switch in the second stage. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification