A disposable ultra-slim endoscope for peritoneal dialysis catheterization and diagnosis

Abstract

The application provides a disposable superfine endoscope for peritoneal dialysis catheterization and diagnosis, which comprises an insertion tube and an operating handle; the operating handle comprises a shell, a pull wire wheel, a rotating device and a brake device; the pull wire wheel comprises a pull wire part, a positioning part and a locking part; the brake device comprises a first deformation part, a brake block and a linear drive assembly; the brake block is located outside the first deformation part; the linear drive assembly drives the brake block to move linearly and extrude the first deformation part to deform to tightly hold the locking part; the disposable superfine endoscope further comprises an implanted catheter and an axial position adjustable mechanism; the axial position adjustable mechanism comprises a catheter clamping mechanism and an adjusting mechanism; the insertion tube passes through the implanted catheter clamped by the catheter clamping mechanism. The disposable superfine endoscope can adjust the axial relative position between the implanted catheter and the insertion tube according to actual conditions, meets different operation requirements, and has the advantages of simple structure, low manufacturing cost and small assembly difficulty.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis. Background Technology

[0002] Peritoneal dialysis is one of the mainstream renal replacement therapies for patients with end-stage renal disease. The safe and precise placement of peritoneal dialysis catheters is crucial for ensuring dialysis efficacy and reducing postoperative complications. Currently, routine peritoneal dialysis catheter placement in clinical practice generally employs a blind insertion procedure guided by a metal guide wire. This method has inherent technical limitations and cannot meet the demands of minimally invasive and precise clinical treatment. Specifically, it suffers from the following shortcomings:

[0003] Firstly, traditional catheter placement surgery relies on a metal guidewire to insert the peritoneal dialysis catheter into the abdominal cavity. The entire process lacks visual monitoring, and the abdominal organs and catheter trajectory cannot be directly observed during the procedure. Catheter placement relies entirely on the physician's individual clinical experience. Blind insertion is highly random, easily leading to intraoperative injuries such as catheter displacement, abdominal organ lacerations, and bleeding. Postoperative complications such as abdominal infection and poor drainage are also common, resulting in a relatively low overall success rate.

[0004] Secondly, although existing visual peritoneal dialysis catheter placement instruments can achieve intraoperative visual guidance, the instruments and peritoneal dialysis catheters are only connected by simple sleeves or threads, without adjustable clamping and positioning structures, making it impossible to control the axial relative position of the endoscopic insertion tube and the dialysis catheter. If the catheter tip protrudes during the operation, it is very easy to block the endoscopic camera lens, resulting in a loss of field of vision. If the endoscope tip protrudes, the catheter cannot be pushed into place synchronously, making it difficult to balance the integrity of the field of vision and the synchronization of catheter placement.

[0005] In summary, existing peritoneal dialysis catheter placement devices have technical defects such as high risk of blind insertion, easy obstruction of the field of vision, and inability to balance the integrity of the field of vision and the synchronization of catheter placement. There is an urgent need for a clamping and adjustment mechanism that can flexibly adjust the relative position of the catheter and endoscope. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis. The disposable ultra-thin endoscope can not only adjust the axial relative position between the insertion catheter and the insertion tube according to the actual situation to meet different operational needs, but also has the advantages of simple structure, low manufacturing cost and easy assembly.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is:

[0008] A disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis includes an insertion tube and an operating handle for manipulating the insertion tube, wherein...

[0009] The operating handle includes a housing, a pull wheel mounted on the housing, a rotating device for driving the pull wheel to rotate, and a braking device for braking the rotating device. The pull wheel includes a pull section and a mounting section. The mounting section has a positioning section and a locking section. Both the positioning section and the locking section are exposed outside the housing. The rotating device includes a rotating assembly rotatably connected to the positioning section of the pull wheel. The braking device includes a first deformable element, a brake block, and a linear drive assembly for driving the brake block to move linearly. The housing has a mounting groove for mounting the first deformable element. The first deformable element is disposed in the mounting groove and fitted onto the locking section. The brake block is also disposed in the mounting groove and located outside the first deformable element. The linear drive assembly drives the brake block to move linearly and compresses the first deformable element to deform, thereby causing the first deformable element to grip the locking section.

[0010] It also includes an insertion catheter and an axial position adjustable mechanism for adjusting the relative position of the insertion catheter and the tip of the insertion tube; the axial position adjustable mechanism includes a catheter clamping mechanism disposed at the lower end of the housing for clamping the insertion catheter and an adjusting mechanism for driving the catheter clamping mechanism to make linear movement, wherein the insertion tube passes through the insertion catheter clamped by the catheter clamping mechanism.

[0011] Preferably, the catheter clamping mechanism includes a base and a compression nut disposed on the base, wherein the base is provided with a first clearance groove for avoiding the insertion catheter; the compression nut is provided with a second clearance groove for avoiding the insertion tube; the base is provided with an external thread, and the compression nut is provided with an internal thread that mates with the external thread; the base is provided with a second deformation member located outside the insertion catheter; the compression nut is provided with a compression part located above the second deformation member; when the compression nut mates with the base, the compression part causes the second deformation member to deform and clamp the insertion catheter.

[0012] Preferably, the adjusting mechanism includes an adjusting rod and an adjusting drive mechanism for driving the adjusting rod to move linearly, wherein the adjusting rod is mounted on the housing and the base is fixed to the bottom of the adjusting rod; a limiting member for limiting the linear movement stroke of the pressing nut is provided on the adjusting rod above the pressing nut.

[0013] Preferably, an anti-rotation pad is provided between the second deformable member and the extrusion part, and the anti-rotation pad is sleeved on the outside of the insertion conduit.

[0014] Preferably, the housing is provided with a storage groove that cooperates with the adjusting rod; the adjusting drive mechanism includes a driving member and a locking member disposed within the driving member, wherein the driving member is mounted on the outside of the housing via a sliding connection structure, the sliding connection structure being used to guide the driving member to tilt downward toward the adjusting rod or tilt upward away from the adjusting rod; the locking member is mounted on the side of the driving member closer to the adjusting rod, the driving member driving the locking member to move downward and causing the locking member to elastically press against the adjusting rod, thereby locking the adjusting rod.

[0015] Preferably, the locking part is provided with a plurality of locking grooves arranged in a circular pattern, one end of which extends to the end of the locking part.

[0016] Preferably, the positioning part is an irregularly shaped part; the rotating assembly includes a rotating disk and a lever connected to the rotating disk; the center of the rotating disk is provided with a positioning groove that cooperates with the positioning part.

[0017] Preferably, the brake block is provided with multiple sets of brake parts, and the rotating assembly is provided with a clearance groove for avoiding the brake parts; wherein, each set of brake parts is provided with an inclined extending guide surface and a horizontal surface intersecting with the guide surface.

[0018] Preferably, the linear drive assembly includes a brake knob and a rotary connection structure for rotatably connecting the brake knob to the positioning part, wherein the brake knob is coaxially arranged with the rotating disk, and the brake knob is provided with a drive part for driving the brake block to perform linear motion, the number of the drive parts is the same as the number of the brake parts, and they correspond one-to-one.

[0019] Preferably, the upper end of the housing is provided with a terminal block, and the terminal block is connected to the signal line by a snap-fit; the housing is also provided with a photo and video recording button.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The axial position adjustable mechanism in the disposable ultra-thin endoscope of the present invention can adjust the axial relative position between the insertion catheter and the insertion tube according to the actual situation to meet different operational needs. For example, during routine catheter placement, the end of the insertion catheter can be adjusted to be flush with the end face of the camera component at the front end of the insertion tube, so that the direction of travel of the insertion catheter is within the coverage of the camera field of view throughout the process, eliminating blind spots in the front field of view and ensuring visualization and precise advancement of the catheter placement process. When auxiliary operations such as abdominal cavity exploration, adhesion separation, and guidewire guidance are required, the front end of the insertion tube can be adjusted to extend beyond the end face of the insertion catheter, thereby forming an independent operating space in front of the insertion catheter, and cooperating with the endoscope working channel to complete the corresponding intraoperative operations.

[0022] 2. The disposable ultrafine endoscope of the present invention drives the brake block to move axially through the linear drive assembly, and applies axial extrusion force to the first deformable part housed in the mounting groove. After being compressed, the first deformable part simultaneously generates axial and radial coordinated deformation. While the axial thickness decreases, it expands radially outward, so that its outer peripheral surface abuts against the side wall of the mounting groove and its inner peripheral surface hugs the locking part of the pull wheel. The circumferential locking and limiting of the pull wheel is achieved by relying on friction.

[0023] 3. Compared with the existing endoscope knob braking device, which has a complicated structure and many supporting parts, the rotating device and braking device in the disposable ultra-thin endoscope of the present invention have a simple structure and simplified assembly process. While ensuring braking reliability, it can significantly reduce production and manufacturing costs and assembly difficulty. Attached Figure Description

[0024] Figure 1 and Figure 2 These are schematic diagrams of the disposable ultra-thin endoscope of the present invention, used for peritoneal dialysis catheter placement and diagnosis, from two different perspectives.

[0025] Figure 3 This is a three-dimensional structural diagram of the operating handle.

[0026] Figure 4 This is a top view.

[0027] Figure 5 This is a sectional view along the AA direction.

[0028] Figure 6 This is a 3D view of the pull reel.

[0029] Figure 7 This is a 3D view of the rotating component.

[0030] Figure 8 This is a 3D view of the brake block.

[0031] Figure 9 This is a 3D view of the brake knob.

[0032] Figure 10 This is a schematic diagram of the installation of the axial position adjustable mechanism.

[0033] Figure 11 This is a cross-sectional view of the axially adjustable mechanism.

[0034] Figure 12 for Figure 11 A magnified view of a section at point B.

[0035] Figure 13 This is a schematic diagram of the catheter clamping mechanism.

[0036] In the diagram: 1-Housing, 2-Rotating assembly, 201-Lever, 202-Rotating disk, 203-Limiting block, 3-Brake knob, 301-Drive unit, 302-First mounting hole, 303-Vertical part; 4-Screw, 5-Decoder; 6-Pull wheel, 601-Pull wire part, 602-Locking part, 603-Positioning part, 604-Locking groove, 605-Second mounting hole, 7-Brake block, 701-Brake part, 8-First deformation component; 9-Drive component; 10-Locking component; 11-Adjusting rod; 12-Insert tube; 13-Insertion guide tube; 14-Base; 15-Crush nut; 16-Limiting component; 17-Anti-rotation pad; 18-Second deformation component; 19-Terminal; 20-Connecting end; 21-Gas-liquid check valve; 22-Photo and video recording button; 23-Display device; 24-Signal line. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0038] See Figures 1-13 The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis of the present invention includes an insertion tube and an operating handle for operating the insertion tube, wherein the operating handle includes a housing 1, a pull wheel 6 disposed on the housing 1, a rotating device for driving the pull wheel 6 to rotate, and a braking device for braking the rotating device.

[0039] See Figures 1-13 The pull wheel 6 includes a pull part 601 and a mounting part; the mounting part is provided with a positioning part 603 and a locking part 602; both the positioning part 603 and the locking part 602 are exposed outside the housing 1, wherein the positioning part 603 is an irregularly shaped part, for example, the longitudinal section is polygonal.

[0040] See Figures 1-13 The rotating device includes a rotating assembly 2, which is rotatably connected to the positioning part 603 of the pull wheel 6. The rotating assembly 2 includes a rotating disk 202 and a lever 201 connected to the rotating disk 202. The rotating disk 202 and the lever 201 are integrally formed. The center of the rotating disk 202 is provided with a positioning groove that cooperates with the positioning part 603. The positioning groove cooperates with the positioning part 603 to drive the pull wheel 6 to rotate.

[0041] See Figures 1-13The braking device includes a first deformable element 8, a brake block 7, and a linear drive assembly for driving the brake block 7 to move linearly. The housing 1 has a mounting groove for mounting the first deformable element 8. The first deformable element 8 is disposed within the mounting groove and sleeved on the locking part 602. The first deformable element 8 is made of deformable silicone. The brake block 7 is also disposed within the mounting groove and located outside the first deformable element 8. The linear drive assembly drives the brake block 7 to move linearly and compresses the first deformable element 8 to deform, causing the first deformable element 8 to grip the locking part 602. That is, the linear drive assembly drives the brake block 7 to move axially, applying axial compressive force to the first deformable element 8 housed in the mounting groove. After being compressed, the first deformable element 8 simultaneously undergoes axial and radial deformation, decreasing in axial thickness while expanding radially outward, causing its outer circumferential surface to press against the side wall of the mounting groove and its inner circumferential surface to grip the locking part 602 of the pull wheel 6. Circumferential locking and limiting of the pull wheel 6 is achieved through friction.

[0042] See Figures 1-13 The locking part 602 has multiple sets of locking grooves 604 arranged circumferentially; one end of each locking groove 604 extends to the end of the locking part 602. When the brake block 7 presses against the first deformable member 8, the first deformable member 8 simultaneously undergoes axial and radial composite deformation and embeds itself into the locking groove 604. The groove wall of the locking groove 604 clamps the deformation protrusion formed by the first deformable member 8, thereby increasing the frictional braking force between the first deformable member 8 and the locking part 602, and further improving braking reliability.

[0043] See Figures 1-13The brake block 7 is provided with multiple sets of brake parts 701, and the rotating assembly 2 is provided with a clearance groove for avoiding the brake parts 701; each set of brake parts 701 is provided with an inclined extending guide surface and a horizontal surface intersecting with the guide surface; correspondingly, the linear drive assembly includes a brake knob 3 and a rotating connection structure for rotatably connecting the brake knob 3 to the positioning part 603, wherein the brake knob 3 is coaxially arranged with the rotating disk 202, and the brake knob 3 is provided with a function for driving the brake block 7. The number of drive units 301 that move in a straight line is the same as the number of brake units 701, and they correspond one-to-one. Each drive unit 301 also includes an inclined guide surface and a horizontal surface that intersects with the guide surface. When the brake knob 3 is rotated, the drive units 301 on the brake knob 3 slide relative to the brake units 701. The brake units 701 climb along the guide surface of the drive unit 301 and reach the horizontal surface of the drive unit 301. The axial displacement of the brake block 7 compresses the first deformable member 8 to achieve brake locking. When the brake unit 701 falls back along the horizontal surface and guide surface of the drive unit 301 to the lowest end of the guide surface, the axial compressive force applied to the brake block 7 gradually decreases. The brake block 7 is reset in the opposite direction under the elastic force of the first deformable member 8. The first deformable member 8 then releases its grip on the locking part 602 of the pull wheel 6, and finally releases the brake.

[0044] See Figures 1-13 The rotating disk 202 is provided with a limiting block 203 for limiting the rotation angle of the brake knob 3. During the process of the brake knob 3 rotating in the reverse direction to release the brake, the vertical part 303 of the driving part 301 (i.e., the end opposite to the end where the guide surface is located) will contact the limiting block 203, thereby limiting the reverse rotation stroke of the brake knob 3. In this embodiment, the number of limiting blocks 203 is the same as the number of braking parts 701. There are two sets of braking parts 701 on the brake block 7. Correspondingly, there are two sets of positioning grooves, limiting blocks 203 on the rotating disk 202, and driving parts 301 on the brake knob 3.

[0045] See Figures 1-13 The rotating connection structure includes a screw 4; a first mounting hole 302 is provided at the axial position of the brake knob 3, and a second mounting hole 605 is provided on the end face of the positioning part 603, the second mounting hole 605 being a threaded hole; the screw 4 passes through the first mounting hole 302 and is installed in the second mounting hole 605, the optical axis part of the screw 4 near the screw head engaging with the first mounting hole; through the above arrangement, the brake knob 3 can rotate relative to the rotating component 2 and the pull wheel 6, thereby driving the brake block 7 to move axially, thus achieving braking.

[0046] See Figures 1-13 The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis of the present invention further includes an insertion catheter 13 and an axial position adjustable mechanism for adjusting the relative position of the insertion catheter 13 and the tip of the insertion tube 12; the axial position adjustable mechanism includes a catheter clamping mechanism disposed at the lower end of the housing 1 for clamping the insertion catheter 13 and an adjustment mechanism for driving the catheter clamping mechanism to make linear movement, wherein the insertion tube 12 passes through the insertion catheter 13 clamped by the catheter clamping mechanism.

[0047] See Figures 1-13 The catheter clamping mechanism includes a base 14 and a compression nut 15 disposed on the base 14. The base 14 is provided with a first clearance groove for avoiding the insertion catheter 13; the compression nut 15 is provided with a second clearance groove for avoiding the insertion tube 12. The upper end of the first clearance groove and the lower end of the second clearance groove are both provided with a flared guide opening. The base 14 is provided with an external thread, and the compression nut 15 is provided with an internal thread that mates with the external thread. The base 14 is provided with a second deformation member 18, which is made of deformable silicone. The second deformation member 18 is located outside the insertion catheter 13. The compression nut 15 is provided with a compression part, which is located above the second deformation member 18. During adjustment, rotating the compression nut 15 causes axial relative displacement between the compression nut 15 and the base 14 via threaded transmission, thereby compressing the deformable silicone to undergo radial contraction deformation and applying clamping force to the internal insertion tube 13. By controlling the tightening degree of the compression nut 15, the clamping force can be adjusted in stages, achieving flexible switching between two working states: First, sliding adjustment state: When the compression nut 15 is rotated until the deformable silicone slightly clamps the insertion tube 13, the insertion tube 13 is radially limited and will not experience radial movement, but it can still slide axially relative to the insertion tube 12. At this time, the axial relative position of the insertion tube 13 and the insertion tube 12 can be freely adjusted to complete the position calibration of different work positions; Second, locking and fixing state: When the compression nut 15 is further tightened to increase the deformation, the clamping force is increased synchronously, firmly locking the insertion tube 13 at the target axial position of the insertion tube 12, with no relative displacement between the two.

[0048] See Figures 1-13During the engagement of the compression nut 15 and the base 14, the compression part performs both linear and rotational movements. To prevent the rotational movement of the compression part from acting on the deformable silicone and causing it to twist, an anti-rotation pad 17 is provided between the second deformable part 18 and the compression part. The anti-rotation pad 17 is sleeved on the outside of the insertion guide tube 13. In this embodiment, the anti-rotation pad 17 is an annular gasket with a hardness greater than that of the deformable silicone, used to prevent the compression part of the compression nut 15 from directly contacting the deformable silicone.

[0049] See Figures 1-13 The adjustment mechanism includes an adjustment rod 11 and an adjustment drive mechanism for driving the adjustment rod 11 to move linearly. The adjustment rod 11 is mounted on the operating handle, and the housing 1 has a storage groove that mates with the adjustment rod 11. The base 14 is fixed to the bottom of the adjustment rod 11. The adjustment drive mechanism includes a drive member 9 and a locking member 10 disposed within the drive member 9. The drive member 9 is mounted on the outside of the housing 1 via a sliding connection structure, which guides the drive member 9 to tilt downwards towards the adjustment rod 11 or away from it. The lever 11 moves upward at an angle; the locking member 10 is installed in the drive member 9 on the side near the adjusting rod 11. The drive member 9 drives the locking member 10 downward and causes the locking member 10 to elastically press against the adjusting rod 11, thereby locking the adjusting rod 11; the drive member 9 drives the locking member 10 upward and causes the locking member 10 to separate from the adjusting rod 11, thereby releasing the locking of the adjusting rod 11. In this way, by controlling the length of the adjusting rod 11 extending out of the receiving groove, the relative position between the insertion conduit 13 and the insertion tube 12 can be adjusted.

[0050] In this embodiment, the locking member 10 is deformable silicone; the sliding connection structure includes an inclined sliding groove and a slider that cooperates with the sliding groove on the driving member 9, wherein the inner side of the driving member 9 is provided with a mounting groove for installing the locking member 10; the slider and the driving member 9 are an integral structure.

[0051] See Figures 1-13 The adjusting rod 11 is provided with a limiting member 16 located above the compression nut 15 to limit the linear motion stroke of the compression nut 15. The limiting member 16 is a limiting block. When the compression nut 15 rotates in the opposite direction, the compression nut 15 will move linearly away from the base 14. The limiting block is used to limit the linear motion stroke of the compression nut 15, which is equivalent to preventing the compression nut 15 from being unscrewed and loosened from the base 14.

[0052] See Figures 1-13 The upper end of the housing 1 is provided with a terminal block 19, and the terminal block 19 is provided with a wiring groove. A wiring interface is provided in the wiring groove. The side of the connection end 20 of the signal line 24 is connected to the wiring groove by a snap-fit. That is, when the side of the connection end 20 of the signal line is engaged with the wiring groove, the connection end 20 of the signal line 24 is engaged with the wiring interface, and the other end of the signal line 24 is connected to the display device 23, so that the disposable ultra-fine endoscope of the present invention can work normally. In addition, the housing 1 is also provided with a photo and video recording button 22. By moving the lever up and down, the snake-bone end of the insertion tube 12 can be bent up and down. The photo and video recording button 22 can control the camera at the front end of the insertion tube 12 to work, so as to observe and record the status of the module end in real time during the operation. The housing 1 is also provided with an instrument port, which can be connected to a gas-liquid one-way valve 21 for injecting liquid or gas during the operation.

[0053] The above are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis, characterized in that, It includes an insertion tube and an operating handle for operating the insertion tube, wherein, The operating handle includes a housing, a pull wheel mounted on the housing, a rotating device for driving the pull wheel to rotate, and a braking device for braking the rotating device. The pull wheel includes a pull section and a mounting section. The mounting section has a positioning section and a locking section. Both the positioning section and the locking section are exposed outside the housing. The rotating device includes a rotating assembly rotatably connected to the positioning section of the pull wheel. The braking device includes a first deformable element, a brake block, and a linear drive assembly for driving the brake block to move linearly. The housing has a mounting groove for mounting the first deformable element. The first deformable element is disposed in the mounting groove and fitted onto the locking section. The brake block is also disposed in the mounting groove and located outside the first deformable element. The linear drive assembly drives the brake block to move linearly and compresses the first deformable element to deform, thereby causing the first deformable element to grip the locking section. It also includes an insertion catheter and an axial position adjustable mechanism for adjusting the relative position of the insertion catheter and the tip of the insertion tube; the axial position adjustable mechanism includes a catheter clamping mechanism disposed at the lower end of the housing for clamping the insertion catheter and an adjusting mechanism for driving the catheter clamping mechanism to make linear movement, wherein the insertion tube passes through the insertion catheter clamped by the catheter clamping mechanism.

2. The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis according to claim 1, characterized in that, The catheter clamping mechanism includes a base and a compression nut disposed on the base. The base has a first clearance groove for avoiding the insertion catheter; the compression nut has a second clearance groove for avoiding the insertion tube; the base has an external thread, and the compression nut has an internal thread that mates with the external thread; the base has a second deformation member located outside the insertion catheter; the compression nut has a compression part located above the second deformation member; when the compression nut engages with the base, the compression part causes the second deformation member to deform and clamp the insertion catheter.

3. The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis according to claim 2, characterized in that, The adjustment mechanism includes an adjustment rod and an adjustment drive mechanism for driving the adjustment rod to make linear movements. The adjustment rod is mounted on the housing, and the base is fixed to the bottom of the adjustment rod. A limiting member is provided on the adjustment rod above the compression nut to limit the linear movement stroke of the compression nut.

4. The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis according to claim 3, characterized in that, An anti-rotation pad is provided between the second deformable part and the extrusion part, and the anti-rotation pad is sleeved on the outside of the insertion conduit.

5. The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis according to claim 4, characterized in that, The housing is provided with a storage groove that cooperates with the adjusting rod; the adjusting drive mechanism includes a driving component and a locking component disposed within the driving component, wherein the driving component is mounted on the outside of the housing via a sliding connection structure, the sliding connection structure being used to guide the driving component to tilt downward toward the adjusting rod or tilt upward away from the adjusting rod; the locking component is installed on the side of the driving component near the adjusting rod, the driving component driving the locking component to move downward and causing the locking component to elastically press against the adjusting rod, thereby locking the adjusting rod.

6. The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis according to claim 1, characterized in that, The locking part is provided with a plurality of locking grooves arranged in a circular pattern, one end of which extends to the end of the locking part.

7. The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis according to claim 6, characterized in that, The positioning part is an irregularly shaped part; the rotating assembly includes a rotating disk and a lever connected to the rotating disk; the center of the rotating disk is provided with a positioning groove that cooperates with the positioning part.

8. The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis according to claim 7, characterized in that, The brake block is provided with multiple sets of brake parts, and the rotating assembly is provided with a clearance groove for avoiding the brake parts; wherein, each set of brake parts is provided with an inclined extending guide surface and a horizontal surface intersecting with the guide surface.

9. The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis according to claim 8, characterized in that, The linear drive assembly includes a brake knob and a rotary connection structure for rotatably connecting the brake knob to the positioning part. The brake knob is coaxially arranged with the rotating disk and is provided with a drive part for driving the brake block to move linearly. The number of drive parts is the same as the number of brake parts and they correspond one-to-one.

10. The disposable ultra-thin endoscope for peritoneal dialysis catheter placement and diagnosis according to claim 1, characterized in that, The upper end of the housing is provided with a terminal block, which is connected to the signal line by a snap-fit; the housing is also provided with photo and video recording buttons.

Images