Surgery – Instruments – Blunt dissectors
Patent
1990-09-27
1993-04-13
Thaler, Michael H.
Surgery
Instruments
Blunt dissectors
606207, 606170, 128751, A61B 1728
Patent
active
052017524
ABSTRACT:
A specialty surgical instrument for engaging, spreading and removing tissue surrounding an exposed cystic duct and artery in an endo cholecystectomy dissection procedure is provided by this invention. An ergonomically superior scissors action handle extends perpendicular to a cylindrical body for receiving the thumb and two fingers of a surgeon for better control in manipulating a coaxial rod inside the body to operate double action forceps jaws of special design for the dissection of the cystic duct and artery from liver bed tissue, with the feel of the surgeon as if the balance of the instrument and its jaws are an extension of the surgeon's fingers. The jaws have a shape and roughened exterior finish for frictionally engaging tissue in the vicinity of the cystic duct and adjacent artery and spreading it during the dissection procedure. The interior of the jaws are serrated and mated in mutual contact surfaces in closed position to frictionally grasp tissue and bladder for removal. The jaws are specially curved for fitting the anatomical shape of the gall bladder tissue terrain for producing a planar surface in the gall bladder tissue from which the cystic duct and artery are dissected and for cradling the cystic duct during dissection. The length of the jaws permits tissue to be spread significant distances apart for prying tissue surfaces apart. The general exterior jaw shape prevents traumatic damage to the tissue during the dissection procedure and thus bleeding during the procedure.
REFERENCES:
patent: 2113246 (1938-04-01), Wappler
patent: 3446211 (1969-05-01), Markham
patent: 3585985 (1971-06-01), Gould
patent: 4644951 (1987-02-01), Bays
patent: 4669471 (1987-06-01), Hayashi
Mueller "The Surgical Armamentarium" (1980) pp. 90, 91, 237, 289, 1084.
Solos Endoscopy, Laparoscopic Cholecystectomy.
Brown Michael A.
McWhinney Joseph
Brown Laurence R.
Pod, Inc.
Thaler Michael H.
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