Endoscope protective member
First Claim
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1. Endoscope protective member, comprising:
- a hollow cylindrical tube body, said tube body including an end portion which has a circular ring-shaped recess having a reduced inner diameter region at its distal end, and an optical flat glass disposed in said circular ringshaped recess, wherein said reduced inner diameter region is adjacent to a proximal side of said optical flat glass.
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Accused Products
Abstract
Endoscope equipped with a protective tube including a hollow cylindrical tube body made of plastic and equipped with an optical flat glass which is inserted into a circular, annular recess whose inner diameter becomes smaller toward its end near the object, with the region of reduced inner diameter extending to behind the optical flat glass.
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Citations
18 Claims
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1. Endoscope protective member, comprising:
a hollow cylindrical tube body, said tube body including an end portion which has a circular ring-shaped recess having a reduced inner diameter region at its distal end, and an optical flat glass disposed in said circular ringshaped recess, wherein said reduced inner diameter region is adjacent to a proximal side of said optical flat glass. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An endoscope in combination with a protective tube, the endoscope comprising an optical system and an optical system encasing tube which surrounds said optical system, said optical system including an objective lens disposed at a distal end of said encasing tube;
said protective tube including a hollow cylindrical portion adapted to receive said encasing tube and said objective lens, a sleeve supported at the distal end of said hollow cylindrical portion, said sleeve supporting an optical glass, and wherein said sleeve is adapted to receive said objective lens.
Specification