Endoscope having an immobilization system for components of an inner optical system

• US 6,398,723 B1
• Filed: 01/26/2000
• Issued: 06/04/2002
• Est. Priority Date: 07/31/1997
• Status: Expired due to Term

• Current Assignee: Karl Storz Se & Co. Kg
• Original Assignee: Karl Storz Se & Co. Kg
• Inventors: Rudischhauser, Jürgen, Kehr, Ulrich
• Primary Examiner(s): Leubecker, John P.
• Assistant Examiner(s): RAM, JOCELYN D
• Application Number:
  US09/492,051
• Time in Patent Office: 860 Days
• Field of Search: 600/160, 600/138, 600/161, 359/434, 359/435, 359/808, 359/811, 359/819, 359/503
• US Class Current: 600/160
• CPC Class Codes: A61B 1/002 having rod-lens arrangements A61B1/055 takes precedence
• CPC Class Codes: G02B 23/2446 of the image relay G02B23/26 takes precedence
• CPC Class Codes: G02B 23/2476 Non-optical details, e.g. housings, mountings, supports

Abstract

An endoscope has a tubular shaft in whose interior is arranged at least one component of an optical system. At least one support element made from a shrinkable material surrounds at least partially said component in a radial gap between the outer side of said component and the inner side of said tubular shaft. After shrinking of said support element the radial gap is filled up in a manner such that the component is immobilized on the inner side of the tubular shaft via the shrunken support element (FIG. 1).

Claims

1. An endoscope having a tubular shaft in whose interior is arranged at least one component of an optical system, and having at least one support element, said at least one support element at least partially surrounds said component and being disposed in a radial gap between an outer side of said component and an inner side of said tubular shaft, wherein said support element is made from a shrinkable material, and wherein, after shrinking of said support element said radial gap is filled up in a manner such that said component is immobilized on said inner side of said tubular shaft via the shrunken support element, and wherein said support element comprises at least one ring.

2. The endoscope of claim 1, wherein said support element comprises a sleeve segment that covers a majority of said outer side of said component.

3. The endoscope of claim 1, wherein said support element comprises two rings that are arranged at opposite ends of said component.

4. The endoscope of claim 1, wherein said outer side of said component is smooth.

5. The endoscope of claim 1, wherein at least one circumferential groove is cut into said outer side of said component, and said support element is arranged in an area having said groove.

6. The endoscope of claim 1, wherein at least one land is provided on said outer side of said component, and said support element is arranged in an area having said land.

7. The endoscope of claim 1, wherein said inner side of said tubular shaft is smooth.

8. The endoscope of claim 1, wherein said inner side of said tubular shaft has at least one groove, and said support element is arranged in an area having said groove.

9. The endoscope of claim 1, wherein said inner side of said tubular shaft has at least one outwardly directed protrusion in a form of a spherical segment, and said support element is arranged in an area having said protrusion.

10. The endoscope of claim 1, wherein at least one annular flange is provided on said inner side of said tubular shaft and said support element is arranged in an area having said annular flange.

11. The endoscope of claim 1, wherein several components are arranged axially one behind another in said interior of said tubular shaft along an axis of said tubular shaft, said support element extends over said several components, and said several components are immobilized with respect to one another in an axial arrangement by that shrunken support element.

12. An endoscope having a tubular shaft in whose interior is arranged at least one component of an optical system, and having at least one support element, said at least one support element at least partially surrounds said component and being disposed in a radial gap between an outer side of said component and an inner side of said tubular shaft, wherein said support element is made from a shrinkable material, and wherein, after shrinking of said support element said radial gap is filled up in a manner such that said component is immobilized on said inner side of said tubular shaft via the shrunken support element, and wherein said support element comprises at least one half-ring.

13. An endoscope having a tubular shaft in whose interior is arranged at least one component of an optical system, and having at least one support element, said at least one support element at least partially surrounds said component and being disposed in a radial gap between an outer side of said component and an inner side of said tubular shaft, wherein said support element is made from a shrinkable material, and wherein, after shrinking of said support element said radial gap is filled up in a manner such that said component is immobilized on said inner side of said tubular shaft via the shrunken support element, and wherein said support element comprises at least two strips that extend in a longitudinal direction of said tubular shaft.

14. An endoscope having a tubular shaft in whose interior is arranged at least one component of an optical system, and having at least one support element, said at least one support element at least partially surrounds said component and being disposed in a radial gap between an outer side of said component and an inner side of said tubular shaft, wherein said support element is made from a shrinkable material, and wherein, after shrinking of said support element said radial gap is filled up in a manner such that said component is immobilized on said inner side of said tubular shaft via the shrunken support element, and wherein said support element comprises a tape wound in helical fashion.

15. A method for mounting components of an optical system in an interior of a tubular shaft of an endoscope, in which at least one support element made of shrinkable material, that at least partially surrounds said component is brought onto an outer side of said component thereby forming an assembly, introducing said assembly into said tubular shaft, and after introduction of said assembly into said tubular shaft, a heat treatment is performed such that said shrinkable material of said support element shrinks, thereby immobilizing said assemblage on an inner side of said tubular shaft, and wherein several components are arranged axially one behind another along an axis of said tubular shaft, and said support element extending over said several components is applied in such a way, that, after said heat treatment, said several components are additionally immobilized relative to one another in their axial arrangement.