Surgery – Instruments – Electrical application
Patent
1993-07-13
1995-03-07
Thaler, Michael H.
Surgery
Instruments
Electrical application
606205, 128751, A61B 1728, A61B 1736
Patent
active
053953690
ABSTRACT:
An endoscopic bipolar electrocautery instrument includes a proximal actuator coupled by a tube and push rod to a pair of distal graspers. The tube is covered with an insulating shrink wrap from its distal end up to an uncovered proximal portion. A stationary jaw with an integral clevis is mounted inside the distal end of the tube and electrically contacts the inner surface thereof. The clevis holds a pair of ceramic insulators between which a movable jaw is mounted on an insulated bushing with an axle pin. The movable jaw is electrically and mechanically coupled to the push rod which is covered with an insulating shrink wrap from a point just proximal of its connection with the movable jaw to a point near its proximal end. The uninsulated proximal end of the tube is mounted in a conductive bushing which rotates within a nonconductive handle. The proximal end of the push rod extends beyond the conductive bushing and a rubber insulator is fitted between the bushing and the push rod. A nonconductive actuating lever is hingedly attached to the handle and the push rod is rotatingly coupled thereto. A pair of Y-shaped electrical wiper contacts are insert molded in a nonconductive member mounted in the handle and respectively contact the bushing and uninsulated portion of the push rod on either side of the rubber insulator. A bipolar cable insert molded in the nonconductive member is coupled to these contacts and to a source of current.
REFERENCES:
patent: 2031682 (1936-02-01), Wappler et al.
patent: 3446211 (1969-05-01), Markham
patent: 3920021 (1975-11-01), Hiltebrandt
patent: 4347842 (1982-09-01), Beale
patent: 4644651 (1987-02-01), Jacobsen
patent: 4819633 (1989-04-01), Bauer et al.
patent: 4862890 (1989-09-01), Stasz et al.
patent: 4953559 (1990-09-01), Salerno
patent: 5015227 (1991-05-01), Broadwin et al.
patent: 5026370 (1991-06-01), Lottick
patent: 5035248 (1991-07-01), Zinnecker
patent: 5085659 (1992-02-01), Rydell
patent: 5160343 (1992-11-01), Brancel et al.
patent: 5171256 (1992-12-01), Smith et al.
patent: 5171311 (1992-12-01), Rydell et al.
patent: 5176677 (1993-01-01), Wuchinich
patent: 5197963 (1993-03-01), Parins
patent: 5197964 (1993-03-01), Parins
patent: 5258006 (1993-11-01), Rydell et al.
Kortenbach Jurgen A.
McBrayer Michael S.
Slater Charles R.
Gordon David P.
Symbiosis Corporation
Thaler Michael H.
LandOfFree
Endoscopic bipolar electrocautery instruments does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Endoscopic bipolar electrocautery instruments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Endoscopic bipolar electrocautery instruments will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1403261