US4567890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pair of bipolar diathermy forceps for surgery
Assignee: Individual
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Filing: 1984-08-07
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Granted: 1986-02-04
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Expires: 2004-08-07
Abstract
Abstract A pair of bipolar diathermy forceps used for surgery having two arms electrically insulated from each other and adapted to keep opening their tips usually, comprising a tube which extends toward the inside tips of the arms and which is mounted along a groove, the said groove is provided on either or both of the arms, an elongate section which follows the said groove, an operational section inserted between two arms whereby a hole of the tube is open, when the said arms are closed and is closed when they are open, and a pouring section of physiological saline which is connected to the end of the tube. Irrigation is started when the arms are closed and is stopped when they are open automatically. When the tissue is held by the tips of arms and supplied with the current, the coagulation is caused by the high frequency conducted, whereby the control of hemorrhage is completed. The frequent saline irrigation of the work area in microsurgery and the dilution of a little bleeding can be obtained.
Inventors
- 👤 Tomio Ohta
- 👤 Noboru Funatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:06
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1442; A61B17/00; A61B17/30; A61B2217/00; A61B2217/002; A61B2217/007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
297 words
A pair of bipolar diathermy forceps for surgery comprising two arms, each having a base end and a tip at an opposite end thereof, insulator means for holding said base ends of said two arms, with said arms being electrically insulated from each other and with said tips at said other ends being unconnected to enable said tips to open and close, said arms having inside walls and at least one of said arms having a groove, said forceps further comprising a hollow tube for passing a saline solution therethrough extending from a position toward said base end of one of said two arms toward said tips along said inside walls of said arms and mounted along said groove, wherein said tube comprises an elongated section following said groove, an operational section disposed between said two arms, and an inlet section for supplying physiological saline through the hollow part of said tube, and means disposed on said inside walls of said arms in vicinity of said operational section of said tube for closing said hollow part of said tube when said tips are open, and for opening said hollow part of said tube when said tips are closed, wherein said means comprises a pair of coupling rings disposed on said inside wall of one arm for holding therein said operational section of said tube, and at least one hook disposed on said inside wall of the outer arm and positioned between said pair of coupling rings disposed on said one arm for holding therein said operational section of said tube, whereby said at least one hook on said other arm and said pair of coupling rings on said one arm act cooperatively on said operational section of said tube to open and close said hollow part thereof.
Claim 2
Dependent Claim
297 words
A pair of bipolar diathermy forceps for surgery comprising two arms, each having a base end and a tip at an opposite end thereof, insulator means for holding said base ends of said two arms, with said arms being electrically insulated from each other and with said tips at said other ends being unconnected to enable said tips to open and close, said arms having inside walls and at least one of said arms having a groove, said forceps further comprising a hollow tube for passing a saline solution therethrough extending from a position toward said base end of one of said two arms toward said tips along said inside walls of said arms and mounted along said groove, wherein said tube comprises an elongated section following said groove, an operational section disposed between said two arms, and an inlet section for supplying physiological saline through the hollow part of said tube, and means disposed on said inside walls of said arms in vicinity of said operational section of said tube for closing said hollow part of said tube when said tips are open, and for opening said hollow part of said tube when said tips are closed, wherein said means comprises a pair of coupling rings disposed on said inside wall of one arm for holding therein said operational section of said tube, and at least one hook disposed on said inside wall of the outer arm and positioned between said pair of coupling rings disposed on said one arm for holding therein said operational section of said tube, whereby said at least one hook on said other arm and said pair of coupling rings on said one arm act cooperatively on said operational section of said tube to open and close said hollow part thereof.
Claim 3
Dependent Claim
51 words
A pair of bipolar diathermy forceps for surgery, according to claim 1, wherein said tube comprises a stainless steel tube for a portion thereof passing along said groove of said arms, and a synthetic resin tube compounded with silicon for a portion thereof whereat said hollow part is opened and closed.
Claim 4
Dependent Claim
39 words
A pair of bipolar diathermy forceps for said surgery, according to claim 1, where said portion of said tube corresponding to said groove of said arms is partially embedded in a face of said inside wall of said arms.
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) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |