CN206096617U - Structure is adjusted to endoscope - Google Patents

Abstract

The utility model provides a structure is adjusted to endoscope, including eyepiece holder, adapter, eyepiece sleeve and eyepiece, the eyepiece holder and the adapter constitution endoscope mirror body, the eyepiece sets up in the eyepiece sleeve, and the eyepiece sleeve is installed in eyepiece holder, the clearance has between eyepiece sleeve and the eyepiece holder inner wall internal being provided with of mirror is used for adjusting the adjustment mechanism of eyepiece cylinder diameter to the position. Through the position at adjustment mechanism adjustment eyepiece center, ensure that its optical axis with optical system rod -like lens is coaxial, adjust eccentric distance effectively, guarantee the image quality.

Description

An endoscope adjustment structure

technical field

The utility model belongs to the technical field of medical instruments, in particular to an endoscope adjustment structure.

Background technique

Endoscope is a medical device widely used in surgical diagnosis and treatment. It is mainly composed of an adapter seat, a light source adapter, an optical system, an eyepiece seat, and an eyepiece. The rod lens of the optical system is inserted into the adapter seat, and the eyepiece seat Connected with the adapter base, the eyepiece is installed in the eyepiece holder, opposite to the rod mirror. Due to errors in the processing of lenses and some structural parts, or errors in the assembly process, the optical system may deviate from the center of the eyepiece, reducing the optical performance of the endoscope such as clarity, and ultimately affecting the imaging quality. Endoscopes that adjust the axial distance between the eyepiece and the rod mirror have appeared on the market, but they still cannot effectively solve the problem of offset between the optical system and the center of the eyepiece.

Utility model content

In view of the deficiencies of the prior art described above, the purpose of this utility model is to provide an endoscope adjustment structure, by adjusting the position of the optical axis of the eyepiece so that it is coaxial with the optical axis of the optical system to ensure the imaging clarity.

In order to achieve the above purpose and other related purposes, the technical solution of the utility model is as follows:

An endoscope adjustment structure, comprising an eyepiece seat, an adapter seat, an eyepiece barrel and an eyepiece, the eyepiece seat and the adapter seat form an endoscope mirror body, the eyepiece is arranged in the eyepiece barrel, and the eyepiece barrel is installed on the eyepiece In the seat, there is a gap between the eyepiece barrel and the inner wall of the eyepiece seat, and an adjustment mechanism for adjusting the radial position of the eyepiece barrel is arranged in the mirror body.

With the above structure, the position of the center of the eyepiece is adjusted by the adjustment mechanism to ensure that it is coaxial with the optical axis of the rod mirror of the optical system, effectively adjusting the eccentricity, and ensuring the imaging quality.

Further, the adjustment mechanism is distributed along the circumferential direction of the eyepiece barrel and indirectly or directly abuts against the outer wall of the eyepiece barrel, and there are at least three top pressure adjustment members, so as to ensure that the number of top pressure adjustment parts is small Under the circumstances, the radial and all-round adjustment can be realized.

Further, a positioning ring is installed in the adapter seat, and a locking sleeve is fixed on the eyepiece barrel, and the locking sleeve extends into the positioning ring and leaves a radial gap with the positioning ring. The adjusting part is passed through the positioning ring and is against the outer wall of the lock sleeve.

Further, the pressing adjusting member is an adjusting screw, and the positioning ring is provided with a threaded hole for installing the adjusting screw. The adjusting screw is supported by the positioning ring, and the radial position is adjusted by tightening or loosening the adjusting screw.

Further, the outer wall of the lock sleeve is provided with a ring of positioning grooves along the circumference, and the positioning grooves correspond to the position of the pressure adjusting member.

Further, the lock sleeve is provided with a slit in the axial direction, and the slit can be opened separately at the position corresponding to the rear part of the lock sleeve and the eyepiece tube, or can run through the front and rear sections of the lock sleeve, and the rear part of the lock sleeve is set on the eyepiece tube, and Fastened by locking mechanism. When the locking mechanism is released, the eyepiece tube and the locking sleeve can move relative to each other in the axial direction.

Further, the locking mechanism includes a locking ring and a locking screw, the locking ring is overlaid on the locking sleeve, and the locking screw passes through the locking ring and pushes against the outer wall of the locking sleeve.

Further, the front part of the positioning ring is provided with a fixing groove, and fixing screws are installed on the adapter seat, and the fixing screws extend into the fixing groove to support and fix the positioning ring.

Further, a positioning ring is installed in the adapter seat, the eyepiece tube extends into the positioning ring and leaves a radial gap with the positioning ring, and the top pressure adjusting member passes through the positioning ring, And against the outer wall of the eyepiece tube.

Further, the adjustment mechanism is a pressure adjustment member arranged directly or indirectly along the circumference of the eyepiece barrel;

A positioning ring is installed in the adapter seat, a lock sleeve is fixed on the eyepiece barrel, the lock sleeve is overlaid on the positioning ring and there is a radial gap between the positioning ring and the pressing adjustment member Threaded on the lock sleeve and against the outer wall of the positioning ring;

Or a locating ring is installed in the adapter seat, the eyepiece barrel is overlaid on the locating ring and there is a radial gap between the locating ring, and the top pressure adjusting member is worn on the eyepiece barrel, and against the outer wall of the positioning ring.

As mentioned above, the beneficial effect of the utility model is: the radial position of the locking sleeve is adjusted by the adjusting screw, and the locking sleeve drives the radial adjustment of the eyepiece tube to realize the effective adjustment of the optical axis of the eyepiece system, ensuring that the optical axis of the eyepiece system is consistent with the rod-shaped The optical axis of the mirror is coaxial to effectively adjust the eccentricity.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the lock sleeve of the present utility model;

Figure 3 is a sectional view of the eyepiece and the adjustment mechanism.

Part number description

11 Eyepiece holder

12 Eyepiece cover

13 eyepiece tube

14 eyepiece

2 Adapter

21 Adapter

22 Eyepiece adapter

23 Objective Lens Adapter

3 rod mirrors

41 Locating ring

42 lock sleeve

43 positioning slot

44 Top pressure regulator

45 lock ring

46 Locking screw

47 threaded hole

48 Fixing slot

49 gaps

51 Adjustment sleeve

52 springs

detailed description

The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

Example

As shown in Figure 1, an endoscope adjustment structure includes an eyepiece base 11, an adapter base 2, an eyepiece tube 13 and an eyepiece 14, the eyepiece base 11 is covered with an eyepiece cover 12, and the eyepiece base 11 and the adapter base 2 form an inner The mirror body of the speculum, the eyepiece 14 is arranged in the eyepiece tube 13, the eyepiece tube 13 is installed in the eyepiece seat 11, there is a gap between the eyepiece tube 13 and the inner wall of the eyepiece seat 11, and there is a gap in the mirror body for adjusting the radial position of the eyepiece tube 13 The adjustment mechanism can be supported on the adapter base 2 or the eyepiece base 11. The adjustment mechanism is distributed along the circumferential direction of the eyepiece barrel 13 and indirectly or directly against the pressure adjustment member 44 on the outer wall of the eyepiece barrel 13. There are multiple pressure adjustment members 44. When pressing the adjusting member 44, radial adjustment in the diameter direction can be realized. When there are at least three pressing adjusting members 44, radial adjustment in the entire circumferential direction can be realized. The pressing adjusting member 44 is preferably Three are evenly distributed along the circumferential direction, and a full range of radial adjustments can be realized with a minimum number of pressing adjustment members 44 . The position of the center of the eyepiece barrel 13 is adjusted by the adjustment mechanism to ensure that it is coaxial with the optical axis of the optical system and the imaging clarity is ensured.

In this example, the adjustment mechanism is preferably arranged on the adapter base 2; a positioning ring 41 is installed in the adapter base 2, the position of the positioning ring 41 is fixed relative to the adapter base 2, and one end of the eyepiece tube 13 is fixed on one end of the lock sleeve 42 , the other end of the lock sleeve 42 extends into the end of the positioning ring 41, the outer diameter of the other end of the lock sleeve 42 is smaller than the inner diameter of the end of the positioning ring 41, there is a radial gap between the lock sleeve 42 and the positioning ring 41, and the top pressure regulator 44 is set on the positioning ring 41 and abuts against the outer wall of the locking sleeve 42 . In another embodiment, the inner diameter of the other end of the locking sleeve 42 can also be designed to be larger than the outer diameter of the end of the positioning ring 41, and the end of the positioning ring 41 can be extended into the other end of the locking sleeve 42, and the pressing adjustment member 44 can be penetrated. on the lock sleeve 42 and press against the outer wall of the positioning ring 41 . This embodiment still takes FIG. 1 as an example, the pressing adjusting member 44 is preferably an adjusting screw, and the positioning ring 41 is provided with a threaded hole 47 for installing the adjusting screw. Because the positioning ring 41 is fixed, the length of the adjusting screw protruding from the threaded hole 47 can be adjusted to press the locking sleeve 42 to move radially, so as to realize the adjustment of the radial position of the locking sleeve 42. The locking sleeve 42 and the positioning ring The radial gap between 41 is used to leave a margin for the radial movement of the lock sleeve 42 . When the locking sleeve 42 moves radially, the locking sleeve 42 drives the eyepiece tube 13 to adjust radially, so as to realize the effective adjustment of the optical axis of the eyepiece tube 13, ensure that the optical axis of the eyepiece 14 is coaxial with the optical axis of the optical system, and effectively adjust the eccentricity . In this embodiment, the pressure adjusting member 44 realizes the indirect pressing and adjustment of the eyepiece tube 13 by pressing against the lock sleeve 42; in another embodiment, the lock sleeve 42 may not be used, but the eyepiece tube 13 One end is extended and extends into the end of the positioning ring 41. There is a radial gap between the eyepiece tube 13 and the positioning ring 41. The pressing adjustment member 44 directly presses against the outer wall of the eyepiece tube 13. By adjusting the extension length of the pressing adjustment member 44 To realize the radial adjustment of the eyepiece tube 13, and then realize the effective adjustment of the optical axis of the eyepiece tube 13; or design the inner diameter of the eyepiece tube 13 to be larger than the outer diameter of the end of the positioning ring 41, and wrap the eyepiece tube 13 on the positioning ring 41 and a radial gap is left between the positioning ring 41, and the pressing adjustment member 44 is directly installed on the eyepiece tube and is against the outer wall of the positioning ring 41.

Further, the outer wall of the lock sleeve 42 is provided with a ring of positioning grooves 43 along the circumference. The positioning grooves 43 correspond to the position of the pressing adjustment member 44. to the moving range.

As shown in FIGS. 2 and 3 , in order to facilitate the tightening and loosening between the locking sleeve 42 and the eyepiece tube 13 to adapt to the adjustment of the eyepiece tube 13 in the axial direction, the locking sleeve 42 is provided with a slit 49 along the axial direction. , One end of the locking sleeve 42 is set on the eyepiece barrel 13, and is fastened by a locking mechanism. When the locking mechanism is released, the eyepiece barrel 13 and the lock sleeve 42 can move relative to each other in the axial direction, and the axial distance between the eyepiece 14 and the rod lens 3 of the optical system can be adjusted to ensure the clarity of imaging. Since the lock sleeve 42 is usually made of metal, plastic, etc., opening the slit 49 makes the lock sleeve 42 have a certain elasticity, which can adapt to tightening and loosening.

Wherein, the locking mechanism includes a locking ring 45 and a locking screw 46, the locking ring 45 is overlaid on the locking sleeve 42, and the locking screw 46 passes through the locking ring 45 and is pushed against the outer wall of the locking sleeve 42, and the locking screw 46 can be tightened Make the lock sleeve 42 hold the eyepiece tube 13 tightly, loosen the locking screw 46, the lock sleeve 42 clamps the eyepiece tube 13 loosely, the axial distance of the eyepiece tube 13 relative to the lock sleeve 42 can be manually adjusted, and the axial distance of the eyepiece 14 can be realized. adjust.

The adapter base 2 includes an adapter 21 and an eyepiece connector 22 and an objective connector 23 installed on the adapter 21. A fixing screw (not shown) is installed on the eyepiece connector 22, and the front portion of the positioning ring 41 is provided with a The fixing groove 48 , the fixing screw extends into the fixing groove 48 to support and fix the positioning ring 41 . An adjustment sleeve 51 is arranged in the positioning ring 41, and the rear end of the rod mirror 3 of the optical system is installed in the adjustment sleeve 51. The adjustment sleeve 51 is covered with a spring 52, and the front end of the adjustment sleeve 51 has a protrusion. On the protrusion and the positioning ring 41, the spring 52 is in a compressed state in the axial direction, which can compensate for the length error introduced by the optical system during the processing. By adjusting the spring 52, the axial support and compression of the rod mirror can be maintained. At the same time, the structure can reduce the stress concentration on the lens during high temperature and high pressure sterilization and immersion disinfection in disinfectant solution.

Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.

Claims (10)

1. An endoscope adjustment structure, comprising an eyepiece seat, an adapter seat, an eyepiece barrel and an eyepiece, the eyepiece seat and the adapter seat constitute an endoscope mirror body, the eyepiece is arranged in the eyepiece barrel, and the eyepiece barrel is installed In the eyepiece holder, it is characterized in that there is a gap between the eyepiece barrel and the inner wall of the eyepiece holder, and an adjustment mechanism for adjusting the radial position of the eyepiece barrel is arranged in the mirror body. 2. An endoscope adjustment structure according to claim 1, characterized in that: the adjustment mechanism is distributed along the circumferential direction of the eyepiece barrel and indirectly or directly against the pressure adjustment member on the outer wall of the eyepiece barrel, the There are at least three top pressure regulators. 3. An endoscope adjustment structure according to claim 2, characterized in that: a positioning ring is installed in the adapter seat, a lock sleeve is fixed on the eyepiece barrel, and the lock sleeve extends into the positioning ring. There is a radial gap between the ring and the locating ring, and the pressure adjusting member is passed through the locating ring and abuts against the outer wall of the lock sleeve. 4 . The endoscope adjustment structure according to claim 3 , wherein the pressing adjustment member is an adjustment screw, and the positioning ring is provided with a threaded hole for installing the adjustment screw. 5 . The endoscope adjustment structure according to claim 3 or 4 , characterized in that: the outer wall of the locking sleeve is provided with a ring of positioning grooves along the circumference, and the positioning grooves correspond to the position of the pressure adjusting member. 6 . 6. An endoscope adjustment structure according to claim 3, characterized in that: the lock sleeve is provided with a slit along the axial direction, the rear part of the lock sleeve is sleeved on the eyepiece tube, and the eyepiece tube is opposite to the eyepiece tube. The lock sleeve can move axially and is fastened by a locking mechanism. 7. A kind of endoscope adjustment structure according to claim 6, characterized in that: the locking mechanism comprises a locking ring and a locking screw, the locking ring is covered on the locking sleeve, and the locking screw passes through the locking screw. The ring tops on the outer wall of the lock sleeve. 8. An endoscope adjustment structure according to claim 3, characterized in that: the front part of the positioning ring is provided with a fixing groove, and a fixing screw is installed on the adapter seat, and the fixing screw extends into the fixing groove Secure the retaining ring support. 9. An endoscope adjustment structure according to claim 2, characterized in that: a positioning ring is installed in the adapter seat, and the eyepiece tube extends into the positioning ring and is between the positioning ring A radial gap is left, and the pressure adjusting member is passed through the positioning ring and abuts against the outer wall of the eyepiece tube. 10. An endoscope adjustment structure according to claim 1, characterized in that: the adjustment mechanism is a pressure adjustment member directly or indirectly arranged along the circumference of the eyepiece barrel; A positioning ring is installed in the adapter seat, a lock sleeve is fixed on the eyepiece barrel, the lock sleeve is overlaid on the positioning ring and there is a radial gap between the positioning ring and the pressing adjustment member Threaded on the lock sleeve and against the outer wall of the positioning ring; Or a locating ring is installed in the adapter seat, the eyepiece barrel is overlaid on the locating ring and there is a radial gap between the locating ring, and the top pressure adjusting member is worn on the eyepiece barrel, and against the outer wall of the positioning ring.