Self-locking endoscope structure

Abstract

The invention discloses a self-locking type endoscope structure. The front end of the endoscope body is provided with a connector, the connector is provided with a connecting sleeve, the connecting sleeve and the connector are connected in an inserted mode, the front end of the connecting sleeve is provided with an endoscope tube, the front end of the connector is provided with an inner tube, the inner tube is arranged on the inner side of the endoscope tube and connected with the endoscope tube in an inserted mode, the side wall of the connecting sleeve is provided with a side through hole, and an elastic piece is arranged in the side through hole. One end of the elastic piece is elastically connected with the hole wall of the side through hole, a lock head is fixed to the face, right opposite to the connector, of the other end of the elastic piece, a lock groove matched with the lock head is formed in the side wall of the connector, a push block connected with the elastic piece is further installed on the outer side wall of the connecting sleeve, and the push block is axially connected with the connecting sleeve in a sliding mode. The fixing device has the beneficial effects that connection is convenient, and the fixing effect is good; the mirror tube and the inner tube can be detached from each other and can be disinfected independently, so that the disinfection effect is improved; the structure is simple and operation is convenient; and the locking effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to medical devices, and in particular to a self-locking endoscope structure. Background Art

[0002] Endoscopic minimally invasive medicine is one of the earliest and most mature technologies in minimally invasive medical technology. Endoscopic minimally invasive surgery has the characteristics of less trauma, shorter operation time, and faster postoperative recovery, and is favored by both doctors and patients. Over the years, many endoscopes have been developed, which can be divided into neuroscopes, urethral cystoscopes, resectoscopes, laparoscopes, arthroscopes, laryngoscopes, etc. according to the different parts reached by the endoscopes. With the popularization of endoscopic minimally invasive technology and the improvement of endoscope processing technology, the application of endoscopes has involved almost all departments such as general surgery, otolaryngology, orthopedics, urology, gynecology, pediatrics, etc., becoming an indispensable surgical equipment for medical use and one of the fastest growing products in the global medical device industry.

[0003] During routine endoscopic examinations, the endoscope provides images and cooperates with medical equipment to perform operations. During the disinfection process of existing endoscopes, the pipe inside the tube fits tightly with the inner wall of the tube, making it difficult to fully disinfect the fitting surface during sterilization, resulting in poor disinfection effect.

[0004] In summary, there is a need for a self-locking endoscope structure in which the endoscope tube and the inner tube can be detached from each other and sterilized separately. Summary of the invention

[0005] The present invention aims to overcome the shortcomings of the prior art that the pipe in the endoscope tube fits tightly with the inner wall of the endoscope tube, making it difficult to fully disinfect the fitting surface during sterilization and resulting in poor disinfection effect. The present invention provides a self-locking endoscope structure in which the endoscope tube and the inner tube can be disassembled from each other and can be disinfected separately.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A self-locking endoscope structure comprises a mirror body, a connector is arranged at the front end of the mirror body, a connecting sleeve is installed on the connecting head, the connecting sleeve and the connecting head are plugged into each other, a mirror tube is arranged at the front end of the connecting sleeve, an inner tube is arranged at the front end of the connecting head, the inner tube is placed on the inner side of the mirror tube and is plugged into each other, a side through hole is arranged on the side wall of the connecting sleeve, a spring sheet is arranged inside the side through hole, one end of the spring sheet is elastically connected to the hole wall of the side through hole, a locking head is fixed on the other end of the spring sheet and on a surface facing the connecting head, and a side through hole is arranged on the side wall of the connecting head. A lock groove matching the lock head is provided, and a push block connected to the spring piece is also installed on the outer wall of the connecting sleeve, the push block and the connecting sleeve are axially slidably connected, an annular cavity is provided inside the connecting sleeve, the annular cavity is located between the side through hole and the mirror tube, an annular air port is provided on the inner ring wall of the annular cavity, an annular expansion bag is sealed and connected to the annular air port, a piston channel is provided between the annular cavity and the side through hole, a piston is provided in the piston channel, the piston is connected to the spring piece, and an annular bag groove matching the annular expansion bag is provided on the outer wall of the connecting head.

[0007] During assembly, the connecting sleeve is sleeved on the connecting head of the mirror body, and the position of the annular bag groove on the connecting head is aligned with the position of the annular expansion bag on the connecting sleeve, and the locking head on the inner side of the connecting sleeve is aligned with the locking groove on the outer side of the connecting head. Then, the push block is pushed forward, and the spring piece is deformed by the movement of the push block. At this time, the push block will push the other end of the spring piece toward the direction close to the connecting head, so that the locking head on the spring piece and the locking groove on the connecting head are engaged with each other and self-locked. The structure is simple, the connection is convenient, and the fixing effect is good. At the same time, the piston in the piston channel will automatically move toward the direction close to the annular cavity under the drive of the spring piece, so that the air in the annular cavity is compressed, so that the annular expansion bag at the annular air port is automatically inflated and tightly pressed against the annular bag groove, thereby improving the sealing performance. The sealing performance between the high connecting sleeve and the connecting head can prevent the liquid from leaking from the gap between the connecting sleeve and the connecting head, and the control is convenient and the automation is high. When it is necessary to disassemble and disinfect, the push block is pushed backward to make the other end of the spring piece move in the direction away from the connecting head, so that the locking head on the spring piece and the locking groove on the connecting head can be separated from each other, thereby releasing the lock between the connecting sleeve and the connecting head. At the same time, the piston in the piston channel will automatically move in the direction away from the annular cavity under the drive of the spring piece, so that the annular expansion bag at the annular air port is automatically deflated for subsequent disassembly. The control is convenient and the automation is high. After that, the connecting sleeve can be pulled out from the connecting head to complete the mutual separation between the mirror tube and the inner tube, and the mirror tube and the inner tube can be disinfected separately, thereby improving the disinfection effect.

[0008] Preferably, the spring sheet is placed at the inner port of the side through hole, a frame is fixed on the outer side wall of the connecting sleeve, the frame is placed at the outer port of the side through hole, the push block is installed in the frame and is slidably connected thereto, a transmission arm is provided between the push block and the spring sheet, one end of the transmission arm is installed on the push block and is hinged thereto, the other end of the transmission arm is installed on the other end of the spring sheet and on the side facing away from the connecting head, and the other end of the transmission arm is hinged to the spring sheet. The design of the frame facilitates the installation of the push block on the connecting sleeve, and at the same time guides the movement of the push block. When the staff pushes the push block on the connecting sleeve, the transmission arm on the push block will pull the other end of the spring sheet in a direction away from or close to the connecting head, so that the locking head on the spring sheet and the locking groove on the connecting head are separated from each other or are engaged and self-locked, with a simple structure and convenient operation.

[0009] Preferably, a front clamp is fixed to the front end of the push block, a front clamping groove matching the front clamp is provided on the front wall of the frame, the front clamp and the front clamp are mutually clamped, and a rear clamp is fixed to the rear end of the push block, a rear clamping groove matching the rear clamp is provided on the rear wall of the frame, and the rear clamp and the rear clamp are mutually clamped. In the assembled state, the front clamp on the push block and the front clamp on the frame are mutually clamped, so as to realize the limit fixation of the push block in the frame, avoid the lock head from being loosened from the lock groove due to the displacement of the push block, and improve the locking effect between the connecting sleeve and the connecting head. When disassembling, the staff pushes the push block to the rear wall of the frame, so that the lock head on the spring piece and the lock groove on the connecting head are separated from each other. At this time, the push block is fixed to the rear wall of the frame through the clamping cooperation of the rear clamp and the rear clamp. At this time, even if the staff releases the push block, the lock head will not be re-locked into the lock groove due to the reset force of the spring piece, which greatly facilitates the staff's disassembly operation of the connecting sleeve.

[0010] Preferably, a connecting rod is provided between the piston and the transmission arm, one end of the connecting rod is mounted on the piston and hinged therewith, and the other end of the connecting rod is mounted on the transmission arm and hinged therewith. When the staff pushes the push block on the connecting sleeve, the transmission arm on the push block will automatically push and pull the piston through the connecting rod, thereby realizing automatic inflation and deflation of the annular expansion bag, with a simple structure, convenient control, and a high degree of automation.

[0011] Preferably, the port at the rear end of the connecting sleeve is provided with an inner fillet, which improves the smoothness of the connecting sleeve and the connector during the mutual plugging process, making the operation simple and convenient, saving time and effort.

[0012] Preferably, the inner tube is provided with an optical channel, a water inlet channel and an illumination channel, the mirror body and the connecting sleeve are also provided with an instrument channel and a water outlet channel respectively, the instrument channel and the water outlet channel are both located on the inner side of the mirror tube, the mirror body is provided with an eyepiece seat connected to the optical channel and a lighting interface connected to the illumination channel, the side wall of the connector is provided with a water inlet 1 connected to the water inlet channel, the side wall of the connecting sleeve is provided with a water inlet valve and a water outlet valve, the position of the water inlet valve matches the position of the water inlet 1, and the water outlet valve is connected to the water outlet channel. By integrating the optical channel, the water inlet channel and the illumination channel into one inner tube, and by integrating the instrument channel, the water outlet channel and the inner tube into one mirror tube, the compactness of the structure of the endoscope is improved and space is saved. By integrating the eyepiece seat and the lighting interface into the mirror body as a whole, and integrating the water inlet valve and the water outlet valve into the connecting sleeve as a whole, the overall structural strength of the endoscope is improved.

[0013] Preferably, the lighting channel is placed on both sides of the optical channel, the water inlet channel is located between the lighting channel and the optical channel, the instrument channel and the water outlet channel are both located below the inner tube, and the water outlet channel is located on both sides of the instrument channel. The structure is compact, space is saved, and space utilization is improved.

[0014] Preferably, a water inlet 2 connected to the water inlet valve is provided on the inner wall of the connecting sleeve, and the water inlet 2 and the water inlet 1 match each other and are sealed and connected. Water entering through the water inlet valve flows into the water inlet channel through the water inlet 2 and the water inlet 1 in sequence.

[0015] Preferably, a guide ring block is fixed on the outer side of the port of the water inlet 2, and a guide slot matching the guide ring block is provided on the outer side wall of the connector, and the water inlet 1 is located on the bottom surface of the guide slot. The matching design of the guide ring block and the guide slot plays a guiding and limiting role in the matching installation of the connecting sleeve and the connector, and at the same time improves the matching accuracy between the water inlet 1 and the water inlet 2, preventing water leakage caused by misalignment.

[0016] Preferably, a sealing pad layer is provided on the side of the guide ring block facing the water inlet 1. The design of the sealing pad layer improves the sealing performance of the connection between the water inlet 1 and the water inlet 2, preventing water from leaking from the gap.

[0017] The beneficial effects of the present invention are: convenient connection and good fixing effect; the mirror tube and the inner tube can be detached from each other and disinfected separately, thereby improving the disinfection effect; the structure is simple and the operation is convenient; the locking effect is improved; it is convenient for the staff to disassemble the connecting sleeve; the sealing is improved; the structure is compact, space is saved, and the space utilization rate is improved; the overall structural strength is improved; and the matching accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 The enlarged view of point A in the middle; Figure 3 yes Figure 1 Sectional view at the middle BB; Figure 4 It is a schematic diagram of the structure of the mirror body; Figure 5 It is a structural diagram of the connecting sleeve.

[0019] In the figure: 1. mirror body, 2. connector, 3. connector sleeve, 4. mirror tube, 5. inner tube, 6. side through hole, 7. spring, 8. lock head, 9. lock slot, 10. push block, 11. frame, 12. transmission arm, 13. front clamp head, 14. front clamp slot, 15. rear clamp head, 16. rear clamp slot, 17. annular air port, 18. annular expansion bag, 19. annular bag slot, 20. annular cavity, 21. piston channel, 22. piston, 23. connecting rod, 24. optical channel, 25. water inlet channel, 26. lighting channel, 27. instrument channel, 28. water outlet channel, 29. water inlet 1, 30. water inlet valve, 31. water outlet valve, 32. water inlet 2, 33. Guide ring block, 34. Guide slide, 35. Eyepiece seat, 36. Illumination interface. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1-Figure 5In the embodiment described, a self-locking endoscope structure includes a mirror body 1, a connector 2 is provided at the front end of the mirror body 1, a connecting sleeve 3 is installed on the connecting sleeve 2, the connecting sleeve 3 and the connecting sleeve 2 are plugged into each other, a mirror tube 4 is provided at the front end of the connecting sleeve 3, an inner tube 5 is provided at the front end of the connecting sleeve 2, the inner tube 5 is placed on the inner side of the mirror tube 4 and plugged into each other, a side through hole 6 is provided on the side wall of the connecting sleeve 3, a spring sheet 7 is provided inside the side through hole 6, one end of the spring sheet 7 is elastically connected to the hole wall of the side through hole 6, a lock head 8 is fixed on the other end of the spring sheet 7 and on a surface facing the connecting head 2, and a locking member 8 is provided on the side wall of the connecting head 2 A matching lock groove 9, a push block 10 connected to the spring piece 7 is also installed on the outer wall of the connecting sleeve 3, the push block 10 and the connecting sleeve 3 are axially slidably connected, an annular cavity 20 is provided inside the connecting sleeve 3, the annular cavity 20 is located between the side through hole 6 and the mirror tube 4, an annular air port 17 is provided on the inner ring wall of the annular cavity 20, an annular expansion bag 18 is sealed and connected at the annular air port 17, a piston channel 21 is provided between the annular cavity 20 and the side through hole 6, a piston 22 is provided in the piston channel 21, the piston 22 is connected to the spring piece 7, and an annular bag groove 19 matching the annular expansion bag 18 is provided on the outer wall of the connecting head 2.

[0022] The spring piece 7 is placed at the inner end of the side through hole 6, and a frame 11 is fixed on the outer side wall of the connecting sleeve 3. The frame 11 is placed at the outer end of the side through hole 6. The push block 10 is installed in the frame 11 and is slidably connected to it. A transmission arm 12 is provided between the push block 10 and the spring piece 7. One end of the transmission arm 12 is installed on the push block 10 and is hinged to it. The other end of the transmission arm 12 is installed on the other end of the spring piece 7 and on the side facing away from the connecting head 2. The other end of the transmission arm 12 is hinged to the spring piece 7.

[0023] A front clamping head 13 is fixed to the front end of the push block 10, and a front clamping groove 14 matching the front clamping head 13 is provided on the front wall of the frame 11. The front clamping head 13 and the front clamping groove 14 are clamped together. A rear clamping head 15 is fixed to the rear end of the push block 10, and a rear clamping groove 16 matching the rear clamping head 15 is provided on the rear wall of the frame 11. The rear clamping head 15 and the rear clamping groove 16 are clamped together.

[0024] A connecting rod 23 is provided between the piston 22 and the transmission arm 12 , one end of the connecting rod 23 is mounted on the piston 22 and is hinged thereto, and the other end of the connecting rod 23 is mounted on the transmission arm 12 and is hinged thereto.

[0025] The port at the rear end of the connecting sleeve 3 is provided with an inner fillet.

[0026] An optical channel 24, a water inlet channel 25 and a lighting channel 26 are arranged inside the inner tube 5. An instrument channel 27 and a water outlet channel 28 are also arranged on the mirror body 1 and the connecting sleeve 3 respectively. The instrument channel 27 and the water outlet channel 28 are both located on the inner side of the mirror tube 4. An eyepiece seat 35 connected to the optical channel 24 and a lighting interface 36 connected to the lighting channel 26 are arranged on the mirror body 1. A water inlet 29 connected to the water inlet channel 25 is arranged on the side wall of the connecting head 2. A water inlet valve 30 and a water outlet valve 31 are arranged on the side wall of the connecting sleeve 3. The position of the water inlet valve 30 matches the position of the water inlet 29. The water outlet valve 31 is connected to the water outlet channel 28.

[0027] The lighting channel 26 is placed on both sides of the optical channel 24 , the water inlet channel 25 is located between the lighting channel 26 and the optical channel 24 , the instrument channel 27 and the water outlet channel 28 are both located below the inner tube 5 , and the water outlet channel 28 is located on both sides of the instrument channel 27 .

[0028] A second water inlet 32 ​​connected to the water inlet valve 30 is provided on the inner wall of the connecting sleeve 3. The second water inlet 32 ​​and the first water inlet 29 match each other and are sealed and connected.

[0029] A guide ring block 33 is fixed to the outside of the port of the second water inlet 32 ​​, and a guide slot 34 matching the guide ring block 33 is provided on the outer wall of the connector 2 , and the first water inlet 29 is located on the bottom surface of the guide slot 34 .

[0030] A sealing cushion layer is arranged on the surface of the guide ring block 33 facing the water inlet 29.

[0031] Before assembly, the staff pushes the push block 10 to the rear wall of the frame 11 to separate the lock head 8 on the spring 7 and the lock groove 9 on the connector 2, so that the annular expansion bag 18 at the annular air port 17 is in a deflated state.

[0032] During assembly, the connecting sleeve 3 is sleeved on the connecting head 2 of the mirror body 1, and the position of the annular bag groove 19 on the connecting head 2 is aligned with the position of the annular expansion bag 18 on the connecting sleeve 3, and the locking head 8 on the inner side of the connecting sleeve 3 is aligned with the locking groove 9 on the outer side of the connecting head 2. Then the push block 10 is pushed from the rear wall of the frame 11 to the front wall of the frame 11. At this time, the transmission arm 12 on the push block 10 will push the other end of the spring piece 7 toward the direction close to the connecting head 2, so that the locking head 8 on the spring piece 7 and the locking groove 9 on the connecting head 2 are mutually engaged and self-locked. At the same time, the piston 22 in the piston channel 21 will also automatically move toward the direction close to the annular cavity 20 under the transmission action of the transmission arm 12 and the connecting rod 23, so that the air in the annular cavity 20 is compressed, so that the annular expansion bag 18 at the annular air port 17 is automatically inflated and tightly pressed against the annular bag groove 19.

[0033] When disassembly and disinfection are required, the staff pushes the push block 10 to the rear wall of the frame 11, so that the lock head 8 on the spring 7 and the lock groove 9 on the connecting head 2 are separated from each other, and the lock between the connecting sleeve 3 and the connecting head 2 can be released. At the same time, the piston 22 in the piston channel 21 will automatically move in the direction away from the annular cavity 20 under the transmission action of the transmission arm 12 and the connecting rod 23, so that the annular expansion bag 18 at the annular air port 17 is automatically deflated, and then the connecting sleeve 3 is pulled out from the connecting head 2, so that the mutual separation between the mirror tube 4 and the inner tube 5 can be completed and the mirror tube 4 and the inner tube 5 can be disinfected separately.

Claims

1. A self-locking endoscope structure, characterized in that: The invention comprises a mirror body (1), wherein a connector (2) is provided at the front end of the mirror body (1), a connector sleeve (3) is mounted on the connector (2), the connector sleeve (3) and the connector (2) are plugged into each other, a mirror tube (4) is provided at the front end of the connector sleeve (3), an inner tube (5) is provided at the front end of the connector (2), the inner tube (5) is placed on the inner side of the mirror tube (4) and is plugged into each other, a side through hole (6) is provided on the side wall of the connector sleeve (3), a spring sheet (7) is provided inside the side through hole (6), one end of the spring sheet (7) is elastically connected to the hole wall of the side through hole (6), a lock head (8) is fixed on the other end of the spring sheet (7) and on a surface facing the connector (2), and a lock groove (9) matching the lock head (8) is provided on the side wall of the connector (2). A push block (10) connected to the spring sheet (7) is also mounted on the outer wall of the connecting sleeve (3); the push block (10) and the connecting sleeve (3) are axially slidably connected; an annular cavity (20) is provided inside the connecting sleeve (3); the annular cavity (20) is located between the side through hole (6) and the mirror tube (4); an annular gas port (17) is provided on the inner ring wall of the annular cavity (20); an annular expansion bag (18) is sealedly connected to the annular gas port (17); a piston channel (21) is provided between the annular cavity (20) and the side through hole (6); a piston (22) is provided in the piston channel (21); the piston (22) is connected to the spring sheet (7); and an annular bag groove (19) matching the annular expansion bag (18) is provided on the outer wall of the connecting head (2).

2. A self-locking endoscope structure according to claim 1, characterized in that: The spring sheet (7) is placed at the inner end of the side through hole (6); a frame (11) is fixed on the outer side wall of the connecting sleeve (3); the frame (11) is placed at the outer end of the side through hole (6); the push block (10) is installed in the frame (11) and is slidably connected to the frame; a transmission arm (12) is provided between the push block (10) and the spring sheet (7); one end of the transmission arm (12) is installed on the push block (10) and is hinged to the push block (10); the other end of the transmission arm (12) is installed on the other end of the spring sheet (7) and on a surface facing away from the connecting head (2); the other end of the transmission arm (12) is hinged to the spring sheet (7).

3. A self-locking endoscope structure according to claim 2, characterized in that: A front clamping head (13) is fixed to the front end of the push block (10); a front clamping groove (14) matching the front clamping head (13) is provided on the front wall of the frame body (11); the front clamping head (13) and the front clamping groove (14) are mutually clamped; a rear clamping head (15) is fixed to the rear end of the push block (10); a rear clamping groove (16) matching the rear clamping head (15) is provided on the rear wall of the frame body (11); the rear clamping head (15) and the rear clamping groove (16) are mutually clamped.

4. A self-locking endoscope structure according to claim 2, characterized in that: A connecting rod (23) is provided between the piston (22) and the transmission arm (12); one end of the connecting rod (23) is mounted on the piston (22) and is hinged thereto; the other end of the connecting rod (23) is mounted on the transmission arm (12) and is hinged thereto.

5. The self-locking endoscope structure according to claim 1 is characterized in that: The port at the rear end of the connecting sleeve (3) is provided with an inner fillet.

6. A self-locking endoscope structure according to any one of claims 1 to 5, characterized in that: An optical channel (24), a water inlet channel (25) and an illumination channel (26) are arranged inside the inner tube (5); an instrument channel (27) and a water outlet channel (28) are also arranged on the mirror body (1) and the connecting sleeve (3), respectively; the instrument channel (27) and the water outlet channel (28) are both located on the inner side of the mirror tube (4); an eyepiece seat (35) connected to the optical channel (24) and an illumination interface (36) connected to the illumination channel (26) are arranged on the mirror body (1); a water inlet port 1 (29) connected to the water inlet channel (25) is arranged on the side wall of the connector (2); a water inlet valve (30) and a water outlet valve (31) are arranged on the side wall of the connecting sleeve (3); the position of the water inlet valve (30) matches the position of the water inlet port 1 (29); and the water outlet valve (31) is connected to the water outlet channel (28).

7. A self-locking endoscope structure according to claim 6, characterized in that: The lighting channel (26) is disposed on both sides of the optical channel (24); the water inlet channel (25) is located between the lighting channel (26) and the optical channel (24); the instrument channel (27) and the water outlet channel (28) are both located below the inner tube (5); and the water outlet channel (28) is located on both sides of the instrument channel (27).

8. A self-locking endoscope structure according to any one of claims 1 to 5, characterized in that: A second water inlet (32) connected to the water inlet valve (30) is provided on the inner wall of the connecting sleeve (3), and the second water inlet (32) and the first water inlet (29) match each other and are sealed and connected.

9. A self-locking endoscope structure according to claim 8, characterized in that: A guide ring block (33) is fixed to the outer side of the port of the second water inlet (32), a guide slide groove (34) matching the guide ring block (33) is provided on the outer side wall of the connector (2), and the first water inlet (29) is located on the bottom surface of the guide slide groove (34).

10. A self-locking endoscope structure according to claim 9, characterized in that: A sealing cushion layer is provided on the surface of the guide ring block (33) facing the water inlet 1 (29).

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