Powered surgical instrument having locking systems and a clutch mechanism
First Claim
1. A surgical instrument having a battery pack mounting to a housing, said battery pack providing power for powering a motor of said surgical instrument, said surgical instrument comprising:
- a groove positioned about a distal end of said housing;
a battery pack having a retaining ring, said retaining ring having a flange and a diametrically opposed contacting portion; and
a spring button positioned on said battery pack and contacting said flange of said retaining ring, wherein said diametrically opposed contacting portion deflects outwardly when said spring button and said flange are depressed, and returns to an original position when said spring button and said flange are released, and wherein at least said contacting portion of said retaining ring engages said groove when said battery pack is mounted on said distal end of said housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A surgical instrument having a locking mechanism for preventing an output shaft of the surgical instrument from rotating and a further locking mechanism for mounting a battery pack to a distal end of a housing of the surgical instrument. The surgical instrument further includes a clutch mechanism for limiting the torque of a drive shaft of the surgical instrument. The locking mechanism for preventing the output shaft from rotating includes a locking switch which mates with a locking cap disposed on the output shaft. The locking mechanism for mounting the battery pack to the housing includes a groove at the distal end of the housing and a retaining ring which engages the groove when the battery pack is mounted on the housing. The clutch mechanism includes a clutch plate that interfaces with both the output shaft and the drive shaft and prevents failure of the motor shaft.
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Citations
9 Claims
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1. A surgical instrument having a battery pack mounting to a housing, said battery pack providing power for powering a motor of said surgical instrument, said surgical instrument comprising:
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a groove positioned about a distal end of said housing;
a battery pack having a retaining ring, said retaining ring having a flange and a diametrically opposed contacting portion; and
a spring button positioned on said battery pack and contacting said flange of said retaining ring, wherein said diametrically opposed contacting portion deflects outwardly when said spring button and said flange are depressed, and returns to an original position when said spring button and said flange are released, and wherein at least said contacting portion of said retaining ring engages said groove when said battery pack is mounted on said distal end of said housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
said battery pack includes a battery therein, said battery contacting contacts which extend from an interior portion of said battery pack to an exterior portion of said battery pack;
said housing includes apertures corresponding to the battery contacts extending from the battery pack, said housing further including battery contacts connected to said motor of said surgical instrument; and
said contacts of said battery extend through said apertures of said housing and contact said battery contacts when said battery pack is mounted on said housing.
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3. The surgical instrument of claim 2, wherein:
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said housing includes;
an end shell which closes said distal end of said housing, said end shell includes the apertures and a lip portion;
a lip portion on said housing proximate to said end shell;
said battery pack includes;
a pack cap having a recess, said pack cap being a circumferential wall extending from said battery pack forming a hollow interior portion for housing said contacts and being defined as a collar, said collar extending beyond a length of said contacts of said battery, an edge of said recess contacts said end shell lip and an edge of said collar contacts said lip portion of said housing when said battery pack is mounted on said housing.
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4. The surgical instrument of claim 3, wherein said contacts of said battery communicate with said apertures of said end shell when said battery pack is mounted on said housing.
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5. The surgical instrument of claim 3, wherein said spring button is depressed in order to remove said battery pack from said housing.
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6. The surgical instrument of claim 2, further comprising a retaining ring to retain said end shell on said housing.
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7. The surgical instrument of claim 2, wherein said battery pack includes a battery interface probe, said battery interface probe contacts said housing during mounting of said battery pack to said housing.
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8. The surgical instrument of claim 7, wherein said interface probe is retracted when said battery pack is mounted on said housing.
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9. The surgical instrument of claim 1, further comprising:
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a clutch mechanism having a clutch plate on a drive shaft housed within said housing, said clutch mechanism further including retention balls on an output shaft, said retention balls being contained within detents of said clutch plate when a torque on said drive shaft is within a predetermined limit; and
a lock cap on said output shaft having a shaped exterior surface and a lock switch axially slidable on a drive housing of said housing between a first position and a second position, in a first position an exterior surface of said locking switch engages the exterior surface of said lock cap thereby preventing rotation of said output shaft.
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Specification