Patent US3584629A successfully refreshed from Google Patents.
US3584629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power driven surgical instrument having aspirator
Assignee: EDWARD WECK AND CO Inc
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Filing: 1968-12-03
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Granted: 1971-06-15
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Expires: 1988-12-03
Abstract
Abstract A high speed compressed gas-powered surgical instrument having a self-contained aspirator to assure a clear surgical field. The spent gases from the instrument motor are directed away from the surgical field and are used to create a partial vacuum in the aspirator conduit terminating adjacent the working end of the cutting tool.
Inventors
- 👤 William A Hoef
- 👤 Mortimer George Ahearn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/05; A61C1/052; Y; Y10; Y10S; Y10S415/00; Y10S415/904
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
321 words
A high speed compressed gas-powered surgical instrument for retaining and rotating a cutting tool connected thereto, comprising: a housing having a compressed gas-powered motor therein, means for connecting said motor to a source of compressed gas and valve means for selectively applying compressed gas to said motor for rotation thereof; a chuck at the forward end of said surgical instrument, said chuck being driven by said motor and being capable of removably retaining a cutting tool for rotation therewith; an interchangeable cutting tool extension and support member mounted on the forward end of said housing, said extension and support member being formed with a plurality of side openings therein to allow seepage exhaust gas to escape therefrom; baffle means secured to said support member for directing said seepage exhaust gas away from said forward end of said extension and support member; means for directing primary motor exhausting gas away from said forward end of said surgical instrument, said means including a manifold and a tube coupled to said manifold; and conduit means extending from a point forward of said forward end of said surgical instrument rearwardly into said tube, the rearward end of said conduit means within said tube being flared so as to reduce the cross-sectional area in one portion of said tube through which said primary exhausting gas flows, thereby providing a partial vacuum in said conduit means in response to flow of said primary exhausting gas through said tube and past said flared end of said conduit; said conduit means being removably secured to said extension and support member and extending forward of the forward end of said extension and support member; said conduit means comprising a substantially rigid forward portion secured to said extension and support member, a substantially rigid rearward portion secured to and extending into said tube and including said flared portion, and a flexible portion removably interconnecting said forward portion and said rearward portion.
Claim 2
Dependent Claim
321 words
A high speed compressed gas-powered surgical instrument for retaining and rotating a cutting tool connected thereto, comprising: a housing having a compressed gas-powered motor therein, means for connecting said motor to a source of compressed gas and valve means for selectively applying compressed gas to said motor for rotation thereof; a chuck at the forward end of said surgical instrument, said chuck being driven by said motor and being capable of removably retaining a cutting tool for rotation therewith; an interchangeable cutting tool extension and support member mounted on the forward end of said housing, said extension and support member being formed with a plurality of side openings therein to allow seepage exhaust gas to escape therefrom; baffle means secured to said support member for directing said seepage exhaust gas away from said forward end of said extension and support member; means for directing primary motor exhausting gas away from said forward end of said surgical instrument, said means including a manifold and a tube coupled to said manifold; and conduit means extending from a point forward of said forward end of said surgical instrument rearwardly into said tube, the rearward end of said conduit means within said tube being flared so as to reduce the cross-sectional area in one portion of said tube through which said primary exhausting gas flows, thereby providing a partial vacuum in said conduit means in response to flow of said primary exhausting gas through said tube and past said flared end of said conduit; said conduit means being removably secured to said extension and support member and extending forward of the forward end of said extension and support member; said conduit means comprising a substantially rigid forward portion secured to said extension and support member, a substantially rigid rearward portion secured to and extending into said tube and including said flared portion, and a flexible portion removably interconnecting said forward portion and said rearward portion.
Claim 3
Dependent Claim
277 words
A high speed compressed gas-powered surgical instrument for retaining and rotating a cutting tool connected thereto, comprising: a housing having a compressed gas-powered motor therein, means for connecting said motor to a source of compressed gas and valve means for selectively applying compressed gas to said motor for rotation thereof; a chuck at the forward end of such surgical instrument, said chuck being driven by said motor and being capable of removably retaining a cutting tool for rotation therewith; means for directing motor exhausting gas away from said forward end of said surgical instrument, said means including a manifold and a tube coupled to said manifold; conduit means extending from a point forward of said forward end of said surgical instrument rearwardly into said tube, the rearward end of said conduit means within said tube being flared so as to reduce the cross-sectional area in one portion of said tube through which said exhausting gas flows, thereby providing a partial vacuum in said conduit means in response to flow of said exhausting gas through said tube and past said flared end of said conduit; and a clamp ring mounted on said housing for rotation between first and second positions; wherein said means for selectively applying compressed gas to said motor includes a throttle lever operable between an open position permitting compressed gas to flow to said motor and a closed position for inhibiting the flow of compressed gas to said motor; said clamp ring, when in said first position, locking said throttle lever in said open position and, when in said second position, permitting said throtTle lever to be moved freely between said open and closed positions.
Claim 4
Dependent Claim
277 words
A high speed compressed gas-powered surgical instrument for retaining and rotating a cutting tool connected thereto, comprising: a housing having a compressed gas-powered motor therein, means for connecting said motor to a source of compressed gas and valve means for selectively applying compressed gas to said motor for rotation thereof; a chuck at the forward end of such surgical instrument, said chuck being driven by said motor and being capable of removably retaining a cutting tool for rotation therewith; means for directing motor exhausting gas away from said forward end of said surgical instrument, said means including a manifold and a tube coupled to said manifold; conduit means extending from a point forward of said forward end of said surgical instrument rearwardly into said tube, the rearward end of said conduit means within said tube being flared so as to reduce the cross-sectional area in one portion of said tube through which said exhausting gas flows, thereby providing a partial vacuum in said conduit means in response to flow of said exhausting gas through said tube and past said flared end of said conduit; and a clamp ring mounted on said housing for rotation between first and second positions; wherein said means for selectively applying compressed gas to said motor includes a throttle lever operable between an open position permitting compressed gas to flow to said motor and a closed position for inhibiting the flow of compressed gas to said motor; said clamp ring, when in said first position, locking said throttle lever in said open position and, when in said second position, permitting said throtTle lever to be moved freely between said open and closed positions.
Claim 5
Dependent Claim
206 words
A high speed compressed gas-power surgical instrument for retaining and rotating a cutting tool connected thereto, comprising: a housing having a motor therein, means for connecting said motor to a source of compressed gas and valve means for selectively applying compressed gas to said motor for rotation thereof; a chuck at the forward end of said surgical instrument, said chuck being driven by said motor and being capable of removably retaining a cutting tool for rotation therewith; means for directing motor exhausting gas away from said forward end of said surgical instrument, said means including a manifold and tube coupled to said manifold; conduit means extending from a point forward of said forward end of said surgical instrument rearwardly into said tube, the rearward end of said conduit means within said tube being flared so as to reduce the cross-sectional area in one portion of said tube through which said exhausting gas flows, thereby providing a partial vacuum in said conduit means in response to flow of said exhausting gas through said tube and past said flared end of said conduit; and valve means in said tube for selectively reversing the direction of flow of said exhausting gas to a forward direction through said conduit means.
Claim 6
Dependent Claim
206 words
A high speed compressed gas-power surgical instrument for retaining and rotating a cutting tool connected thereto, comprising: a housing having a motor therein, means for connecting said motor to a source of compressed gas and valve means for selectively applying compressed gas to said motor for rotation thereof; a chuck at the forward end of said surgical instrument, said chuck being driven by said motor and being capable of removably retaining a cutting tool for rotation therewith; means for directing motor exhausting gas away from said forward end of said surgical instrument, said means including a manifold and tube coupled to said manifold; conduit means extending from a point forward of said forward end of said surgical instrument rearwardly into said tube, the rearward end of said conduit means within said tube being flared so as to reduce the cross-sectional area in one portion of said tube through which said exhausting gas flows, thereby providing a partial vacuum in said conduit means in response to flow of said exhausting gas through said tube and past said flared end of said conduit; and valve means in said tube for selectively reversing the direction of flow of said exhausting gas to a forward direction through said conduit means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |