US3734099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powered surgical cutter
Assignee: Individual
•
Filing: 1971-04-07
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Granted: 1973-05-22
•
Expires: 1991-04-07
Abstract
Abstract A powered surgical cutter with its own controlled vacuum system designed to clip tissue and remove each piece as it is clipped through a vacuum line. The apparatus has an elongated external fixed tubular cutter interiorly of which a similar cutter rotates. The inner cutter is driven by a motor by means of a hollow drive shaft, the interior of which shaft is in communication with the interior of the inner cutter. Vacuum is supplied through the interior of the drive shaft to the interior of the cutter. Control means are provided whereby tissue drawn into an opening in the tubular cutter by the vacuum is sheared off by the rotation of the inner cutter inside and against the bore of the external cutter.
Inventors
- 👤 L Wold
- 👤 H Bender
- 👤 R Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00763
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
261 words
A surgical cutter comprising: a housing; motor means mounted in said housing; an elongated external fixed tubular cutter attached at one end to said housing, said external cutter having an axial bore therethrough, the other end of said external cutter being closed off, less than half the diameter of said external cutter being removed at said other end to form a sharp-edged opening in said cutter through which tissue can be drawn; an elongated inner tubular cutter mounted in said bore for at least partial rotation about the axis thereof, and having an end adjacent said other end of said outer cutter, said end of said inner cutter being closed off, a portion of the diameter of said inner cutter being removed at said end of said inner cutter to form an opening theRein, said opening in said inner cutter being in register with said opening in said external cutter; drive means connected to said motor means for said rotation of said inner cutter, said drive means comprising a hollow drive shaft, the interior of said drive shaft being in communication with the interior of said inner cutter; a source of vacuum; means to supply vacuum from said source to said interior of said drive shaft and thence to said interior of said inner cutter; and means to control the supply of vacuum to said interior of said drive shaft for drawing tissue into said opening in said inner cutter, said tissue being sheared off by said rotation of said inner cutter inside and against said bore of said external cutter.
Claim 2
Dependent Claim
261 words
A surgical cutter comprising: a housing; motor means mounted in said housing; an elongated external fixed tubular cutter attached at one end to said housing, said external cutter having an axial bore therethrough, the other end of said external cutter being closed off, less than half the diameter of said external cutter being removed at said other end to form a sharp-edged opening in said cutter through which tissue can be drawn; an elongated inner tubular cutter mounted in said bore for at least partial rotation about the axis thereof, and having an end adjacent said other end of said outer cutter, said end of said inner cutter being closed off, a portion of the diameter of said inner cutter being removed at said end of said inner cutter to form an opening theRein, said opening in said inner cutter being in register with said opening in said external cutter; drive means connected to said motor means for said rotation of said inner cutter, said drive means comprising a hollow drive shaft, the interior of said drive shaft being in communication with the interior of said inner cutter; a source of vacuum; means to supply vacuum from said source to said interior of said drive shaft and thence to said interior of said inner cutter; and means to control the supply of vacuum to said interior of said drive shaft for drawing tissue into said opening in said inner cutter, said tissue being sheared off by said rotation of said inner cutter inside and against said bore of said external cutter.
Claim 3
Dependent Claim
27 words
A cutter as in claim 1 in which said supply means comprise a flexible hose and means to attach said flexible hose to said hollow drive shaft.
Claim 4
Dependent Claim
101 words
A cutter as in claim 2 in which said control means comprise: a frame mounted within said housing, said frame being provided with two generally parallel longitudinally-extending surfaces, said flexible hose passing longitudinally through said frame and between said surfaces; spring means disposed against one of said surfaces of said frame and adapted normally to contact said flexible hose and pinch the same against the other of said surfaces; and means selectively to urge said spring means away from said other of said surfaces to permit a vacuum to be drawn through said hose to said interior of said drive shaft.
Claim 5
Dependent Claim
73 words
A cutter as in claim 3 in which said selective means comprise: a knob, said knob having a depending portion extending into said housing, said depending portion having a slot therethrough; and an arm pivotally supported at one end on said frame, the other end of said arm being received in said slot, said arm being adapted to contact said spring means and press the same away from said other of said surfaces.
Claim 6
Dependent Claim
46 words
The cutter of claim 1 further comprising a hollow coupling disposed between said drive shaft and said inner cutter, said coupling being attachable to said inner cutter, said drive shaft being received within said coupling to rotate the same and thereby to rotate said inner cutter.
Claim 7
Dependent Claim
49 words
The cutter of claim 5 further comprising a helical spring encircling said coupling, one end of said spring being retained against said housing, the other end of said spring contacting the proximal end of said inner cutter to urge the same against said other end of said external cutter.
Claim 8
Dependent Claim
24 words
The cutter of claim 5 further comprising a flange on said coupling to maintain an airtight seal between said coupling and said inner cutter.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |