US3749090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination aspirator and fluid delivering surgical instrument
Assignee: Xomed Inc
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Filing: 1971-06-09
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Granted: 1973-07-31
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Expires: 1991-06-09
Abstract
Abstract A combination surgical instrument is provided for applying vacuum and delivering fluid to a work area. The instrument includes a readily detachable work tool having a fluid delivering tube and an integrally attached vacuum-applying tube, with the entrance end of the vacuum tube projecting beyond the entrance end of the fluid tube; and a handle connectable to sources of fluid and vacuum and resistant to sterilizing temperatures and having a first passage for receiving the fluid delivery tube; and a second passage having a cutaway portion to expose an elongated section of the passage along an exterior surface of the handle for receiving the vacuum-applying tube.
Inventors
- 👤 J Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:09
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/71; A61M1/77; A61M1/774; A61M1/74; A61M1/741; A61M1/7411; A61M1/84; A61M1/85
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
296 words
A combination surgical instrument having a readily detachable and replaceable work tool for applying vacuum and delivering fluid to a work area, said instrument comprising: a. a work tool having first and second tubular members for delivering fluid and applying vacuum, respectively, to a work area with each member having an entrance end and an exit end, the entrance end of the second member being located on an extension of the second tubular member that projects beyond the entrance end of the first member, and said first and second members being interconnected to form a unitary work tool; and b. an elongated tubular handle resistant to sterilizing temperatures and conditions and having a first enclosed passage extending the length of the handle which slidably and detachably receives at a first end of the handle the entrance end of the first tubular member of the work tool and communicates with a supply of fluid; and a second passage spaced from the first passage and communicating with a source of vacuum, said second passage having an enclosed portion rearwardly spaced from said first handle end which slidably and detachably receives the entrance end of the extension of the second tubular member and a cutaway portion between the enclosed portion and said first handle end exposing an elongated section of the passage along an exterior surface of the handle which slidably and detachably receives the extension of the second tubular member while leaving exposed a portion of the extension of the second tubular member so that a vacuum relief hole can be provided in the extension of the second tubular member of the replaceable work tool for control by the operator when the handle is gripped to permit control of the amount of vacuum applied to the work area.
Claim 2
Dependent Claim
296 words
A combination surgical instrument having a readily detachable and replaceable work tool for applying vacuum and delivering fluid to a work area, said instrument comprising: a. a work tool having first and second tubular members for delivering fluid and applying vacuum, respectively, to a work area with each member having an entrance end and an exit end, the entrance end of the second member being located on an extension of the second tubular member that projects beyond the entrance end of the first member, and said first and second members being interconnected to form a unitary work tool; and b. an elongated tubular handle resistant to sterilizing temperatures and conditions and having a first enclosed passage extending the length of the handle which slidably and detachably receives at a first end of the handle the entrance end of the first tubular member of the work tool and communicates with a supply of fluid; and a second passage spaced from the first passage and communicating with a source of vacuum, said second passage having an enclosed portion rearwardly spaced from said first handle end which slidably and detachably receives the entrance end of the extension of the second tubular member and a cutaway portion between the enclosed portion and said first handle end exposing an elongated section of the passage along an exterior surface of the handle which slidably and detachably receives the extension of the second tubular member while leaving exposed a portion of the extension of the second tubular member so that a vacuum relief hole can be provided in the extension of the second tubular member of the replaceable work tool for control by the operator when the handle is gripped to permit control of the amount of vacuum applied to the work area.
Claim 3
Dependent Claim
29 words
The instrument of claim 1, wherein said cutaway portion is defined by two opposed side walls which partially wrap around and grip the extension of the second tubular member.
Claim 4
Dependent Claim
65 words
The instrument of claim 1, wherein said handle includes a slot connecting the first Passage with the elongated section of the second passage at said handle end, and the first and second tubular members are interconnected by a brace adjacent the entrance end of the first member which is received in said slot for preventing rotation of the work tool with respect to the handle.
Claim 5
Dependent Claim
35 words
The instrument of claim 1, including a valve means in said handle intersecting said first passage and operable by a finger of the operator for controlling the flow of fluid through said first tubular member.
Claim 6
Dependent Claim
89 words
The instrument of claim 4, wherein the valve means comprises a valve housing having a conically divergent surface which serves as a valve seat, a valve plunger positioned in said housing, a plastic valve seat resistant to sterilizing temperatures and conditions attached to the plunger and having an external configuration to seat to said conically divergent surface, an actuator connected to one end of said plunger, and a coil spring contacting the actuator to bias the valve seal against said conically divergent surface in a fluid flow preventing position.
Claim 7
Dependent Claim
56 words
The instrument of claim 5, wherein a valve cap is secured to an end of said housing, said cap having a bore to slidably receive one end of the plunger opposite the end connected to the actuator, said valve cap being removable to expose internal surfaces of the valve means to permit cleaning of these surfaces.
Claim 8
Dependent Claim
23 words
The instrument of claim 5, including a shaft seal surrounding said plunger to seal the end of the housing adjacent to said actuator.
Claim 9
Dependent Claim
39 words
The instrument of claim 6, wherein said shaft seal comprises an annular stem and a head having an internal annular void which imparts flexibility to the shaft seal, said coil spring being interposed between the actuator and said head.
Claim 10
Dependent Claim
35 words
The instrument of claim 1, wherein said second member is spaced vertically below said first member and the exposed portion of the extension of the second tubular member extends along the bottom of the handle.
Claim 11
Dependent Claim
21 words
The instrument of claim 9, including a relief hole in the exposed portion of the extension of the second tubular member.
Claim 12
Dependent Claim
20 words
The instrument of claim 1 wherein the first and second tubular members gradually expand in diameter from their entrance ends.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |