Micro protective bags

Abstract

A micro-protective bag is provided that can properly hold the objective lens while suppressing an increase in the number of parts. It includes: a lens cap unit that is detachable from the objective lens housing of a surgical microscope, and a protective bag body for covering the surgical microscope. The lens cap unit includes: a cap body that is cylindrical in shape with an inner diameter larger than the housing, and has a first slit in a portion of its circumferential direction; and a protective lens for protecting the objective lens. The cap body includes bulges that connect to both ends of the first slit and bulge inwards radially from the cap body, and are elastically deformable outwards radially.

Claims

1. A micro-protective bag, comprising: The lens cap unit is attached to the housing of the objective lens of the surgical microscope, and the protective bag body is used to cover the surgical microscope. The lens cap unit includes: a cap body, which is a cylindrical shape with an inner diameter larger than that of the housing, and has a first slit in a portion of its circumferential direction; and a protective lens for protecting the objective lens; wherein the cap body includes a bulge that is connected to both ends of the first slit and bulges inward in the radial direction of the cap body, and can be elastically deformed outward in the radial direction; by allowing the housing to enter the cap body, the bulge is elastically deformed outward in the radial direction, and the bulge contacts the inner circumferential surface of the cap body with the housing, so that the lens cap unit is mounted on the housing.

2. The micro-protective bag as claimed in claim 1, wherein the bulge is configured such that the arc-shaped convex surface faces inward in the radial direction.

3. The micro protective bag as described in claim 1, wherein the protective lens is supported by the cover body in a state of tilt relative to the optical axis of the objective lens.

4. The micro protective bag as claimed in claim 3, wherein the protective lens includes an operating part that protrudes radially outward from a portion in the circumferential direction and is operated by a user to rotate the protective lens about the optical axis, and the cover body has a second cut in a portion in the circumferential direction for the operating part to pass through.

5. The micro protective bag as claimed in claim 4, wherein the first cut is located on one end of the cover body in the axial direction; and the second cut is located on the other end of the cover body in the axial direction, and at the same position as the first cut in the circumferential direction.

6. The micro-protective bag as claimed in claim 5, wherein the cover body includes an annular portion that protrudes radially inward and is continuous in the circumferential direction between the first cut and the second cut in the axial direction.

7. The micro protective bag as claimed in claim 1, wherein the lens cap unit includes a lens holder that holds the protective lens in a state of tilt relative to the optical axis of the objective lens, the lens holder being configured to be detachable from the cap body.

Images