Endoscope tip mounting structure

Abstract

The application discloses an endoscope front end piece mounting structure, which comprises a front end piece, a pull rod and an adjusting mechanism. The front end of the front end piece is clamped on the port of a mirror tube, and the rear end is extended into the mirror tube. A sealing glue groove is arranged on the contact part of the front end piece and the inner wall of the mirror tube. The front end of the pull rod is connected with the front end piece, and the rear end is extended into the mirror tube seat. The adjusting mechanism is located in the mirror tube seat and can simultaneously press the mirror tube seat forward and pull the pull rod backward through thread transmission, so that the front end piece is kept on the port of the mirror tube and the installation gap and installation pressure are adjusted. The structure realizes gapless installation of the front end piece, the sealing glue does not bear structural force, the service life and reliability are improved, the total number of parts is reduced, and the cost is lowered.

Description

Technical Field

[0001] This invention belongs to the field of endoscopes, and specifically relates to an endoscope front end piece mounting structure. Background Technology

[0002] An endoscope generally consists of an operating section and an insertion section. The insertion section is typically a long, thin tube, facilitating the passage of various tubes to achieve the endoscope's functions. The foremost component of the insertion section is the endoscope's tip, whose primary function is to seal the endoscope's overall cavity, protecting its internal structure. It also usually has through-holes to accommodate the endoscopic imaging system, surgical instruments, etc. Because the endoscope tip comes into direct contact with the object, especially in medical endoscopes where it comes into contact with human tissues and organs, it requires high-temperature, high-pressure sterilization after use. Therefore, higher requirements are placed on the quality, manufacturing precision, and installation reliability of the endoscope tip.

[0003] In existing endoscopes, the endoscope tip is mainly welded to the endoscope tube or glued together. However, due to the special nature of the welding process, welded endoscope tip components tend to have a simple structure, serving only a protective function, and severely restrict the assembly method of the entire product. Assembly from the rear to the front of the entire device is limited to methods such as using a sleeve, as shown in the structure of the insertion section front cover disclosed in patent CN101098659. On the other hand, glued endoscope tip components suffer from significantly reduced reliability and durability due to the properties of the adhesive, and exhibit noticeable installation gaps. Summary of the Invention

[0004] The purpose of this invention is to propose an endoscope front-end component mounting structure that enables gapless mounting of the front-end component, eliminates the structural stress on the sealant, improves service life and reliability, reduces the total number of parts, and lowers costs.

[0005] The technical solution adopted in this invention is:

[0006] An endoscope tip mounting structure includes a tip, a pull rod, and an adjustment mechanism. The front end of the tip is engaged with the end of the endoscope tube, and the rear end extends into the endoscope tube. The contact portion of the tip with the inner wall of the endoscope tube is provided with a sealing groove. The front end of the pull rod is connected to the tip, and the rear end extends into the endoscope tube seat. The adjustment mechanism is located inside the endoscope tube seat and can simultaneously press the endoscope tube seat forward and pull the pull rod backward through threaded transmission, thereby keeping the tip on the endoscope tube end and adjusting the installation gap and installation pressure.

[0007] As a preferred embodiment, the adjustment mechanism includes an adjustment screw, an adjustment nut, and an open washer. The rear of the pull rod is provided with an enlarged portion. The adjustment screw passes through the enlarged portion and is loosely fitted onto the pull rod. The adjustment nut is threaded onto the adjustment screw and presses against the end of the end of the lens tube. The opening of the open washer is inserted into the pull rod and installed at the rear end of the adjustment screw. When the adjustment nut is turned, the adjustment screw can be moved backward through the threaded transmission and the open washer can press the enlarged portion backward.

[0008] Furthermore, the enlarged sections are located on both sides of the tie rod and form a T-shape with the tie rod.

[0009] As another preferred embodiment, the adjustment mechanism includes an adjustment block and an adjustment screw. The rear of the pull rod is provided with a connecting part. The adjustment block rests on the end of the endoscope tube and accommodates the connecting part on the front side. The adjustment screw extends into the rear of the adjustment block through a threaded engagement and engages with the connecting part on the front side through a threaded engagement. When the adjustment screw is turned, the connecting part can be moved backward through the threaded drive.

[0010] As a preferred feature, the front end of the pull rod has a bend that hooks tightly into the corresponding connecting groove on the front end piece.

[0011] Furthermore, there are two elbows that are symmetrically distributed.

[0012] As another preferred option, the front end of the pull rod is attached to the front end piece and connected to the front end piece by a positioning screw.

[0013] Furthermore, the tie rod can be a single part or multiple assembled parts.

[0014] Furthermore, the sealing groove is located near the front end of the front end component.

[0015] Furthermore, the front-end component is provided with a positioning and mounting structure for functional components, including a camera module and a lighting module.

[0016] The beneficial effects of this invention are:

[0017] This structure uses a tie rod to hold the front end component on the end of the lens tube, achieving gapless installation of the front end component. Moreover, the sealant only seals and does not bear structural force, thus improving service life and reliability. This structure improves installation accuracy while reducing the total number of parts and lowering the overall product cost. Attached Figure Description

[0018] Figure 1 This is a longitudinal sectional view of the endoscope in Embodiment 1 of the present invention;

[0019] Figure 2 for Figure 1 Local magnification Figure 1 ;

[0020] Figure 3 for Figure 1 Local magnification Figure 2 ;

[0021] Figure 4 for Figure 1 A schematic diagram of the front-end component;

[0022] Wherein: 11-Front end piece; 111-Positioning and mounting hole for functional components; 112-Sealing groove; 113-Connecting groove; 114-Positioning step; 12-Functional component; 13-Mirror tube; 14-Pull rod; 15-Adjusting screw; 16-Opening gasket; 17-Adjusting nut; 18-Mirror tube base.

[0023] Figure 5 This is a longitudinal sectional view of the endoscope in Embodiment 2 of the present invention;

[0024] Figure 6 for Figure 5 Local magnification Figure 1 ;

[0025] Figure 7 for Figure 5 Local magnification Figure 2 ;

[0026] Figure 8 for Figure 5 A schematic diagram of the front-end component;

[0027] Figure 9 for Figure 5 Schematic diagram of the adjusting fixed block;

[0028] Figure 10 for Figure 5 Schematic diagram of the middle tie rod adjustment section;

[0029] Wherein: 21-Front end piece; 211-Functional component positioning and mounting hole; 212-Sealing groove; 213-Connecting hole; 214-Positioning step; 22-Functional component; 23-Mirror tube; 241-Tie rod connecting section; 242-Tie rod middle section; 243-Tie rod adjusting section; 2431-Adjusting screw hole; 25-Mirror tube base; 26-Adjusting fixing block; 261-Positioning surface; 262-Adjusting screw hole; 27-Positioning screw. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Example 1

[0032] An endoscope tip mounting structure, such as Figures 1 to 4As shown, the device includes a front-end component 11, a pull rod 14, and an adjustment mechanism. The front end of the front-end component 11 is secured to the port of the microscope tube 13 via a positioning step 114, and the rear end extends into the microscope tube 13. A sealing groove 112 is provided on the contact portion of the front-end component 11 with the inner wall of the microscope tube 13. The pull rod 14 is a single component; its front end connects to the front-end component 11, and its rear end extends into the microscope tube seat 18. The adjustment mechanism is located within the microscope tube seat 18 and can simultaneously press the microscope tube seat 18 forward and pull the pull rod 14 backward via threaded transmission. This keeps the front-end component 11 on the port of the microscope tube 13 and allows for adjustment of the installation gap and pressure. The microscope tube 13 and the microscope tube seat 18 are welded together to form the main body of the insertion part. This structure, by holding the front-end component 11 on the port of the microscope tube 13 via the pull rod 14, achieves gapless installation of the front-end component 11. Furthermore, the sealant only seals and does not bear structural force, improving service life and reliability. This structure improves installation accuracy while reducing the total number of parts and lowering the overall product cost.

[0033] like Figures 1 to 3 As shown, in Embodiment 1, the adjustment mechanism includes an adjustment screw 15, an adjustment nut 17, and an open washer 16. The rear of the pull rod 14 is provided with an enlarged portion, which is located on both sides of the pull rod 14 and forms a T-shape with the pull rod 14 (so that the force is evenly distributed and the processing is convenient). The adjustment screw 15 passes through the enlarged portion and is loosely fitted on the pull rod 14. The adjustment nut 17 is threadedly fitted on the adjustment screw 15 and presses against the inner end face of the lens tube seat 18. The opening of the open washer 16 is inserted into the pull rod 14 and installed at the rear end of the adjustment screw 15. When the adjustment nut 17 is turned, the adjustment screw 15 can be driven to move backward through the threaded transmission and the open washer 16 presses the enlarged portion backward.

[0034] like Figures 1 to 3 As shown, in Embodiment 1, the front end of the pull rod 14 has an elbow, which is tightly hooked into the corresponding connecting groove 113 on the front end piece 11. There are two elbows, which are symmetrically distributed (so that the force is evenly distributed and the processing is convenient).

[0035] like Figure 2 and Figure 4 As shown, in Embodiment 1, the sealing groove 112 is located near the front end of the front end member 11 and has two (of course, there can be more).

[0036] like Figure 2 and Figure 4 As shown, in Embodiment 1, the front-end component 11 is provided with functional component positioning and mounting holes 111, and the functional component 12 includes a camera module and a lighting module.

[0037] Example 2

[0038] An endoscope tip mounting structure, such as Figures 5 to 10As shown, the device includes a front end piece 21, a pull rod, and an adjustment mechanism. The front end of the front end piece 21 is secured to the port of the endoscope tube 23 via a positioning step 214, and the rear end extends into the endoscope tube 23. The contact portion of the front end piece 21 with the inner wall of the endoscope tube 23 is provided with a sealing groove 212. The pull rod is composed of a pull rod connecting section 241, a pull rod middle section 242, and a pull rod adjusting section 243, which are sequentially spliced ​​together. The pull rod connecting section 241 is connected to the front end piece 21, and the pull rod adjusting section 243 extends into the endoscope tube seat 25. The adjustment mechanism is located inside the endoscope tube seat 25 and can simultaneously press the endoscope tube seat 25 forward and pull the pull rod adjusting section 243 backward through threaded transmission, thereby keeping the front end piece 21 on the port of the endoscope tube 23 and adjusting the installation gap and installation pressure. The endoscope tube 23 and the endoscope tube seat 25 are welded together to form the main body of the insertion part. This structure uses a tie rod to hold the front end 21 on the port of the lens tube 23, achieving gapless installation of the front end 21. Moreover, the sealant only seals and does not bear structural force, thus improving service life and reliability. This structure improves installation accuracy while reducing the total number of parts and lowering the overall product cost.

[0039] like Figures 5 to 7 As shown, in Embodiment 2, the adjustment mechanism includes an adjustment fixing block 26 and an adjustment screw. The pull rod adjustment section 243 is provided with a connecting part. The adjustment fixing block 26 is placed inside the lens tube seat 25 and accommodates the connecting part on the front side. The adjustment screw extends into the adjustment fixing block 26 from the rear side and is threaded into the connecting part on the front side. When the adjustment screw is turned, the connecting part can be moved backward through the thread transmission.

[0040] like Figures 5 to 7 As shown, in Embodiment 2, the pull rod connecting section 241 is attached to the front end piece 21 and connected to the front end piece 21 by the positioning screw 27.

[0041] like Figure 6 and Figure 8 As shown, in Embodiment 2, the sealing groove 212 is located near the front end of the front end member 21 (the number can be set as needed).

[0042] like Figure 6 and Figure 8 As shown in Embodiment 2, the front-end component 21 is provided with functional component positioning and mounting holes 211, and the functional component 22 includes a camera module and a lighting module.

[0043] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many improvements under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these improvements are within the protection scope of the present invention.

Claims

1. An endoscope tip mounting structure, characterized in that: The device includes a front end piece, a pull rod, and an adjustment mechanism. The front end piece is engaged with the end of the endpiece tube and extends into the endpiece tube. The part of the front end piece that contacts the inner wall of the endpiece tube has a sealing groove, which is located near the front end piece. The front end of the pull rod is connected to the front end piece and extends into the endpiece tube seat. The adjustment mechanism is located inside the endpiece tube seat and can simultaneously press the endpiece tube seat forward and pull the pull rod backward through threaded transmission. This keeps the front end piece on the endpiece tube end piece and allows for adjustment of the installation gap and installation pressure. The sealant only seals and does not bear structural force.

2. The endoscope tip mounting structure as described in claim 1, characterized in that: The adjustment mechanism includes an adjusting screw, an adjusting nut, and an open washer. The rear of the pull rod has an enlarged section. The adjusting screw passes through the enlarged section and is loosely fitted onto the pull rod. The adjusting nut is threaded onto the adjusting screw and presses against the end of the lens tube. The opening of the open washer is inserted into the pull rod and installed at the rear end of the adjusting screw. When the adjusting nut is turned, the adjusting screw can be moved backward through the threaded transmission and the open washer can press the enlarged section backward.

3. The endoscope tip mounting structure as described in claim 2, characterized in that: The enlarged sections are located on both sides of the tie rod and form a T-shape with the tie rod.

4. The endoscope tip mounting structure as described in claim 1, characterized in that: The adjustment mechanism includes an adjustment block and an adjustment screw. The rear of the pull rod is provided with a connecting part. The adjustment block is placed inside the end of the endoscope tube and accommodates the connecting part on the front side. The adjustment screw extends into the rear of the adjustment block through a threaded engagement and engages with the connecting part on the front side through a threaded engagement. When the adjustment screw is turned, the connecting part can be moved backward through the threaded transmission.

5. The endoscope tip mounting structure as described in any one of claims 1 to 4, characterized in that: The front end of the pull rod has a bend, which hooks tightly into the corresponding connecting groove on the front end piece.

6. The endoscope tip mounting structure as described in claim 5, characterized in that: There are two elbows, which are symmetrically distributed.

7. The endoscope tip mounting structure as described in any one of claims 1 to 4, characterized in that: The front end of the pull rod is attached to the front end piece and connected to the front end piece by a positioning screw.

8. The endoscope tip mounting structure as described in any one of claims 1 to 4, characterized in that: The tie rod can be a single part or multiple parts assembled together.

9. The endoscope tip mounting structure as described in any one of claims 1 to 4, characterized in that: The front-end component has a positioning and mounting structure for functional components, including a camera module and a lighting module.

Images