US3842839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rongeur
Assignee: Individual
•
Filing: 1973-04-05
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Granted: 1974-10-22
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Expires: 1993-04-05
Abstract
Abstract A surgical instrument in the form of a power driven rongeur which includes an air turbine motor adapted to control the closing and opening of the cutting blades. A toggle linkage connects the cutting blades to a threaded member which linearly advances and retracts upon rotation of the air motor so as to cause the opening and closing of the cutting blades respectively.
Inventors
- 👤 L Malis
- 👤 F Macalus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:16
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3201; A61B17/16; A61B17/1604; A61B17/1606; A61B17/1608; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18608; Y10T74/18888; Y10T74/1892; Y10T74/18952
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
178 words
A power driven rongeur which comprises: a. a rotary drive motor having an output shaft at one end thereof; b. means for actuating said rotary drive motor; c. a pair of cooperative blades comprising: 1. elongated members pivoted together intermediate their ends and 2. a pair of cutting blades at one end of the members; d. linkage means having one end thereof connected to the other ends of the elongated members opposite said pair of cutting blades; e. an externally threaded member having one end thereof connected to the other end of said linkage means; f. an internally threaded member coupling the output shaft of said drive motor to said threaded member and having at least one thread thereof oppositely disposed to said threaded member to form a helical groove; and g. a train of balls disposed in the helical groove provided by said externally and internally threaded members so as to provide linear movement of said threaded member upon rotation of said drive motor whereby said cutting blades are caused to move with respect to one another.
Claim 2
Dependent Claim
178 words
A power driven rongeur which comprises: a. a rotary drive motor having an output shaft at one end thereof; b. means for actuating said rotary drive motor; c. a pair of cooperative blades comprising: 1. elongated members pivoted together intermediate their ends and 2. a pair of cutting blades at one end of the members; d. linkage means having one end thereof connected to the other ends of the elongated members opposite said pair of cutting blades; e. an externally threaded member having one end thereof connected to the other end of said linkage means; f. an internally threaded member coupling the output shaft of said drive motor to said threaded member and having at least one thread thereof oppositely disposed to said threaded member to form a helical groove; and g. a train of balls disposed in the helical groove provided by said externally and internally threaded members so as to provide linear movement of said threaded member upon rotation of said drive motor whereby said cutting blades are caused to move with respect to one another.
Claim 3
Dependent Claim
134 words
a pair of cutting blades at one end of the members; d. linkage means having one end thereof connected to the other ends of the elongated members opposite said pair of cutting blades; e. an externally threaded member having one end thereof connected to the other end of said linkage means; f. an internally threaded member coupling the output shaft of said drive motor to said threaded member and having at least one thread thereof oppositely disposed to said threaded member to form a helical groove; and g. a train of balls disposed in the helical groove provided by said externally and internally threaded members so as to provide linear movement of said threaded member upon rotation of said drive motor whereby said cutting blades are caused to move with respect to one another.
Claim 4
Dependent Claim
134 words
a pair of cutting blades at one end of the members; d. linkage means having one end thereof connected to the other ends of the elongated members opposite said pair of cutting blades; e. an externally threaded member having one end thereof connected to the other end of said linkage means; f. an internally threaded member coupling the output shaft of said drive motor to said threaded member and having at least one thread thereof oppositely disposed to said threaded member to form a helical groove; and g. a train of balls disposed in the helical groove provided by said externally and internally threaded members so as to provide linear movement of said threaded member upon rotation of said drive motor whereby said cutting blades are caused to move with respect to one another.
Claim 5
Dependent Claim
21 words
A power driven rongeur in accordance with claim 1 wherein said rotary drive motor comprises an air powered turbine type motor.
Claim 6
Dependent Claim
50 words
A power driven rongeur in accordance with claim 1 wherein said linkage means comprises pivotally mounted supporting links extending from said drive motor and a toggle linkage being adapted to take a substantially straight position upon advancement of said threaded member so as to cause said cutting blades to close.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |