Title:
VIDEOENDOSCOPE
Document Type and Number:
WIPO Patent Application WO/2019/137785
Kind Code:
A1
Abstract:
The invention relates to a videoendoscope, comprising an elongate shaft (2) having a distal end (3) and a proximal end (4), an objective arranged at the distal end (3) of the shaft (2), and at least one image sensor (30) arranged proximally relative to the objective, wherein: the objective has a distal objective assembly (15) and a proximal objective assembly (25); the image sensor (30), optionally together with the proximal objective assembly (25), can be rotated about a longitudinal axis of the shaft (2) relative to the distal objective assembly (15); the distal objective assembly (15) is arranged in an outer tube (20); and a torque for rotating the image sensor (30) and optionally the proximal objective assembly (25) relative to the distal objective assembly (15) is transmitted by means of an inner tube (35), which is arranged in the outer tube (20) and which is axially slidably connected to a frame (28) for conjoint rotation, said frame holding the image sensor (30) and optionally the proximal objective assembly (25). The videoendoscope is distinguished in that the inner tube (35) and the frame (28) have coupling portions (36, 37) that engage one in the other coaxially, a first of the coupling portions (36, 37) of the frame (28) and of the inner tube (35) having at least two cut-outs (38) extending parallel to the longitudinal axis of the shaft (2), and a second of the coupling portions (36, 37) of the frame (28) and of the inner tube (35) having at least two elastic protrusions, which extend toward the first coupling portion (36, 37) and engage in the cut-outs (38). The invention further relates to a videoendoscope, comprising an elongate shaft (2) having a distal end (3) and a proximal end (4), an objective arranged at the distal end (3) of the shaft (2), and at least one image sensor (30) arranged proximally relative to the objective, wherein: the objective has a distal objective assembly (15) and a proximal objective assembly (25); the image sensor (30), optionally together with the proximal objective assembly (25), can be rotated about a longitudinal axis of the shaft (2) relative to the distal objective assembly (15); the distal objective assembly (15) is arranged in an outer tube (20); a torque for rotating the image sensor (30) and optionally the proximal objective assembly (25) relative to the distal objective assembly (15) is transmitted by means of an inner tube (35), which is arranged in the outer tube (20) and which is connected to a frame (28), which holds the image sensor (30) and optionally the proximal objective assembly (25); and the outer tube (20) and the inner tube (35) are supported against each other at the proximal ends thereof by means of a bearing (45), which is arranged in a bearing sleeve (46) fastened to the proximal end of the outer tube (20). The videoendoscope is distinguished in that the outer tube (20) and the bearing sleeve (46) have coupling portions (51, 52) that engage one in the other coaxially, a first of the coupling portions (51, 52) of the outer tube (20) and of the bearing sleeve (46) having at least two cut-outs (47) extending parallel to the longitudinal axis of the shaft (2), and a second of the coupling portions (51, 52) of the outer tube (20) and of the bearing sleeve (46) having at least two elastic protrusions, which extend toward the first coupling portion (51, 52) and engage in the cut-outs (47).
Inventors:
WIETERS MARTIN (DE)
Application Number:
PCT/EP2018/086259
Publication Date:
July 18, 2019
Filing Date:
December 20, 2018
Export Citation:
Assignee:
WINTER & IBE OLYMPUS (DE)
International Classes:
G02B23/24; A61B1/00; G02B27/64
Domestic Patent References:
| WO2013007356A1 | 2013-01-17 |
Foreign References:
| DE102004044119A1 | 2006-03-30 | |||
| US5575756A | 1996-11-19 |
Other References:
None
Attorney, Agent or Firm:
NOACK, Andreas (DE)
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