Replaceable lens assembly for video laparoscope

Details Replaceable lens assembly for video laparoscope Replaceable lens assembly for video laparoscope

1992-09-11

1995-01-10

Apley, Richard J.

Surgery

Truss

Perineal

128 4, 348 65, 348 76, A61B 106

Patent

active

053797566

ABSTRACT:
A video laparoscope has a miniature video camera disposed at the distal end of its insertion tube. A removably installed tubular lens cell contains one or more focussing lenses. The lens cell has a male-threaded first end and a second end on which is formed a radial flange of a predetermined diameter. A tubular lens retainer canister is fixedly mounted in the distal end of the insertion tube, and has an outer distal portion with a diameter to match the diameter of the flange. A sealing portion adjacent to this has a smaller diameter, and biases against an O-ring or similar sealing member. A female-threaded proximal portion is screwed into the male-threaded first portion of the lens cell.

REFERENCES:
patent: 4350150 (1982-09-01), Kubota et al.
patent: 4419987 (1983-12-01), Ogiu
patent: 4856495 (1989-08-01), Tohjoh et al.
patent: 4895138 (1990-01-01), Yabe
patent: 5051824 (1991-09-01), Nishigaki
patent: 5156142 (1992-10-01), Anapliotis et al.
patent: 5184602 (1993-02-01), Anapliotis et al.
patent: 5188094 (1993-02-01), Adair

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