Urinary calculus crushing device

Abstract

The invention relates to the technical field of medical instruments, in particular to a lithangiuria lithotripsy device which comprises a sheath joint and a sheath tube connected with the sheath joint, a crushing knife is arranged in one end, extending into a human body, of the sheath tube, and the lithangiuria lithotripsy device further comprises a plurality of supporting rods which are uniformly distributed at one end of the sheath tube at equal intervals; the conical collecting bag is connected with the supporting rods, and the conical collecting bag and the supporting rods are contained in the sheathing canal together; the sliding ring is arranged in the sheath tube; through the auxiliary assembly, a plurality of supporting rods deflect outwards to open the pipeline of the patient, meanwhile, a conical collecting bag is opened to collect broken stones, and meanwhile, a crushing knife is shielded and wrapped, so that the inner wall of the pipeline of the patient is prevented from being damaged when the crushing knife crushes the stones; then the auxiliary assembly continues to be used for closing up the conical collecting bag, and then the conical collecting bag is used for wrapping the broken stones, so that the broken stones are conveniently taken out at a time, and the inner wall of a pipeline of a patient is prevented from being hurt.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a lithotripsy device for urinary tract stones. Background Technology

[0002] Urinary tract stones are a general term for stones in various parts of the urinary system and are a common disease of the urinary system. When removing stones from the urinary tract, it is usually necessary to first use a urethroscope to observe the internal stones, then use a stone fragmentation device to break them up, and finally aspirate the fragments to remove the stones from the patient's urinary tract. Therefore, it can be seen that existing urological stone fragmentation devices basically meet people's needs, but some problems still exist. Current urological stone fragmentation devices require insertion into the bladder first, and then into the urethra to break up the stones. However, during the fragmentation process... Because the urethra is relatively narrow, when the stone is large, the crushing blade may damage the inner wall of the urinary tract during the crushing process. Furthermore, the crushed residue may also collide with the inner wall of the urinary tract, causing further damage and reducing ease of use and applicability. Secondly, when the stone is crushed, stone residue will scatter in the urinary tract, making collection difficult. This wastes a significant amount of time for medical staff and can also harm the patient. Incomplete stone removal can leave residues in the urinary tract, potentially causing recurrence and secondary pain. Therefore, we propose a urinary tract stone crushing device. Summary of the Invention

[0003] One of the technical problems this application aims to solve is: how to design a device that collects stones incidentally while breaking them up.

[0004] To address the aforementioned technical problems, this application provides a lithotripsy device for urinary tract stones, comprising a sheath connector and a sheath tube connected to the sheath connector, wherein a fragmentation blade is disposed at the end of the sheath tube that extends into the human body, and further comprising:

[0005] The support rods are provided in multiple form, and the multiple support rods are evenly distributed at one end of the sheath tube at equal intervals.

[0006] A conical collection bag, which is connected to multiple support rods and stored together with the support rods inside a sheath;

[0007] A sliding ring, wherein the sliding ring is disposed inside the sheath;

[0008] A drive assembly is disposed on the sheath and is used to drive the sliding ring to move.

[0009] An auxiliary component is disposed inside the sheath. The support rod is connected to the sliding ring through the auxiliary component. Moving the sliding ring causes the auxiliary component to drive multiple support rods to extend out of the sheath, while simultaneously causing the multiple support rods to deflect outward to open the patient's tubing. At the same time, the conical collection bag is opened to collect the stones. Then, the sliding ring is moved further, and the auxiliary component causes the extended support rods to bend inward to close the conical collection bag and wrap the stones.

[0010] In some embodiments, the driving assembly includes a rotating ring disposed on the sheath joint, a plurality of toothed protrusions are evenly and equidistantly arranged on one side of the rotating ring, a toothed disc that meshes with the toothed protrusions is disposed inside the sheath joint, a shaft is disposed on the toothed disc, and a transmission assembly is disposed between the shaft and the sliding ring, so that rotating the rotating ring drives the sliding ring to move by means of the transmission assembly.

[0011] In some embodiments, the transmission assembly includes a screw mounted on the shaft, a push rod on one side of the sliding ring, a slide plate at one end of the push rod, and the screw thread passing through the slide plate.

[0012] In some embodiments, the auxiliary component includes a movable ring disposed on one side of the sliding ring, a connecting plate disposed on the movable ring, a shaft two disposed at one end of the connecting plate, a deflection plate disposed on the shaft two, a connecting rod one disposed between the deflection plate and the connecting plate, a limiting component disposed inside the sheath, the limiting component being connected to the connecting rod one, moving the movable ring causes the support rod to extend out of the sheath, while the limiting component limits the movement of the connecting rod one, thereby causing the support rod to rotate and open relative to the shaft one.

[0013] In some embodiments, the limiting component includes a sliding round rod disposed inside the sheath tube, a connecting rod two disposed between one end of the sliding round rod and connecting rod one, the two ends of the connecting rod two rotating relative to connecting rod one and the sliding round rod respectively, a sliding sleeve disposed on the connecting plate, the sliding round rod sliding through the sliding sleeve, pulling the sliding round rod to drive connecting rod one to deflect;

[0014] The inner wall of the sheath is also provided with a sliding sleeve, and the sliding rod slides through the sliding sleeve. A limiting protrusion is provided on the sliding rod, and a spring is provided on one side of the limiting protrusion. The spring is fitted onto the sliding rod. The sliding ring is moved so that the spring moves and comes into contact with the sliding sleeve, thereby limiting the movement of the sliding rod by the sliding sleeve and the spring.

[0015] In some embodiments, the two ends of the connecting rod rotate relative to the support rod and the deflection plate, respectively, and a synchronization component is provided between the deflection plate and the connecting plate; a second spring is provided between the sliding ring and the moving ring; and a limit block is provided inside the sheath.

[0016] The push rod is provided with a top block. The moving ring is moved to make it contact and abut against the limiting block. At the same time, the top block contacts and abuts against the limiting protrusion, which makes the support rod open. Then the sliding ring is moved to compress the second spring. At the same time, the top block pushes the second connecting rod to move, so that the first connecting rod folds inward. The synchronous component drives the deflection support rod to fold inward synchronously, so that the conical collection bag closes.

[0017] In some embodiments, the synchronization component includes an extension plate 1 disposed on the inner side of the deflection plate, an extension plate 2 disposed on the outer side of the connecting plate, and a connecting rod 3 disposed between the extension plate 1 and the extension plate 2. The two ends of the connecting rod 3 rotate relative to the extension plate 1 and the extension plate 2 respectively, and the connecting rod 2 is folded inward. The connecting rod 3 is used to push the connecting plate to fold inward synchronously.

[0018] In some embodiments, the conical collection bag is provided with a plurality of equally spaced and uniformly spaced perforations for draining the patient's bodily fluids;

[0019] The conical collection bag is designed with an elastic material and has a hollow cylinder at one end. The hollow cylinder and the conical collection bag are made of the same material. The crushing blade passes through the hollow cylinder. A linkage component is provided between the hollow cylinder and the sliding ring. Moving the sliding ring causes the support rod to fold inward. At the same time, the linkage component drives the hollow cylinder to move, which pulls the conical collection bag to tighten it and also causes the leakage hole to deform and tighten.

[0020] In some embodiments, the linkage component includes a shaft three disposed on a connecting plate, a lever disposed on the shaft three, one end of the lever being fixed to a hollow cylinder, and a pin disposed on one side of the sliding ring, the pin sliding through the moving ring, the moving sliding ring causing the pin to contact and push one end of the lever to deflect.

[0021] In some embodiments, a friction wheel is rotatably connected to the support rod via a one-way bearing, and the friction wheel contacts the stone.

[0022] This invention has at least the following beneficial effects:

[0023] The auxiliary components allow multiple support rods to deflect outwards, thus opening the patient's tube and simultaneously opening the conical collection bag to collect the stones. They also shield and cover the crushing blade, preventing damage to the inner wall of the patient's tube when crushing the stones.

[0024] Then, auxiliary components are used to close the conical collection bag, which is then used to wrap the gravel, making it easy to remove the gravel all at once and thus avoiding damage to the patient's tube wall. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0026] Figure 2 For the present invention Figure 1 Schematic diagram of partial cross-section;

[0027] Figure 3 For the present invention Figure 2 Schematic diagram of the structure of area A in the middle;

[0028] Figure 4 For the present invention Figure 2 Schematic diagram of partial cross-section;

[0029] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of Zone B;

[0030] Figure 6 For the present invention Figure 4 Schematic diagram of partial cross-section;

[0031] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of the middle D area;

[0032] Figure 8 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0033] Figure 9 For the present invention Figure 8 Schematic diagram of the structure of Zone E in the middle.

[0034] In the diagram: 1-Sheath connector; 11-Sheath tube; 12-Crushing blade; 2-Support rod; 3-Conical collection bag; 4-Sliding ring; 5-Drive assembly; 6-Auxiliary assembly; 51-Rotating ring; 52-Toothed protrusion; 53-Gear disc; 54-Shaft 1; 55-Transmission assembly; 56-Screw; 57-Push rod; 58-Slide plate; 59-Moving ring; 61-Connecting plate; 62-Shaft 2; 63-Deflection plate; 64-Connecting rod 1 ; 65-Limiting component; 66-Sliding round rod; 67-Linking rod two; 68-Sliding sleeve; 69-Limiting protrusion; 71-Spring one; 72-Synchronization component; 73-Spring two; 74-Top block; 75-Extension plate one; 76-Extension plate two; 77-Linking rod three; 78-Leakage hole; 79-Hollow cylinder; 81-Linkage component; 82-Shaft three; 83-Lever; 84-Top pin; 85-Friction wheel; 86-Limiting block. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] Please see Figures 1-7 The present invention provides a technical solution: a lithotripsy device for urinary tract stones, comprising a sheath connector 1 and a sheath tube 11 connected to the sheath connector 1, wherein a crushing blade 12 is provided at the end of the sheath tube 11 that extends into the human body, and further comprising:

[0038] Support rod 2, multiple support rods 2 are provided, and the multiple support rods 2 are evenly distributed at one end of the sheath tube 11. In the initial state of the support rods 2, the multiple support rods 2 are all stored in the end of the sheath tube 11.

[0039] A conical collection bag 3 is connected to multiple support rods 2 and is stored together with the support rods 2 inside a sheath tube 11;

[0040] Sliding ring 4 is disposed inside sheath 11;

[0041] The drive assembly 5 is mounted on the sheath tube 11 and drives the sliding ring 4 to move. Specifically, the drive assembly 5 includes a rotating ring 51 that is rotatably connected to the sheath joint 1. Multiple toothed protrusions 52 are fixedly and evenly fixedly connected on one side of the rotating ring 51. A toothed disc 53 that meshes with the toothed protrusions 52 is provided inside the sheath joint 1. A shaft 54 ​​is fixedly connected to the toothed disc 53. The shaft 54 ​​is rotatably connected to the sheath joint 1 through a bearing. A transmission assembly 55 is provided between the shaft 54 ​​and the sliding ring 4. Rotating the rotating ring 51 drives the sliding ring 4 to move using the transmission assembly 55.

[0042] The transmission assembly 55 includes a screw 56 fixedly connected to the shaft 54, a push rod 57 fixedly connected to one side of the sliding ring 4, a slide plate 58 fixedly connected to one end of the push rod 57, the screw 56 passing through the slide plate 58 and being threadedly connected to it, and medical staff rotating the rotating ring 51 to drive the gear plate 53 to rotate, which in turn drives the shaft 54 ​​to rotate, thereby driving the screw 56 to rotate, which in turn drives the slide plate 58 to move, which in turn drives the push rod 57 to move, which in turn drives the sliding ring 4 to move;

[0043] Auxiliary component 6 is disposed inside the sheath 11. Support rods 2 are connected to sliding ring 4 via auxiliary component 6. Moving sliding ring 4 causes multiple support rods 2 to extend out of sheath 11 using auxiliary component 6, simultaneously causing the support rods 2 to deflect outwards to open the patient's tubing and simultaneously causing the conical collection bag 3 to open and collect the stones. Further movement of sliding ring 4 causes the extended support rods 2 to bend inwards using auxiliary component 6, causing the conical collection bag 3 to close and enclose the stones. Specifically, auxiliary component 6 includes a movable ring 59 disposed on one side of sliding ring 4, with a connecting plate 61 fixedly connected to movable ring 59. One end of connecting plate 61 is fixedly connected to shaft 62, which rotates via bearings. A deflection plate 63 is connected to the sheath 11, and a connecting rod 64 is provided between the deflection plate 63 and the connecting plate 61. A limiting component 65 is provided inside the sheath 11, and the limiting component 65 is connected to the connecting rod 64. When medical staff insert the sheath 11 into the human body and align it with the stone, the moving ring 59 is moved to drive the support rod 2 out of the sheath 11. At the same time, the limiting component 65 limits the movement of the connecting rod 64, thereby causing the support rod 2 to rotate relative to the shaft 54 ​​and open up, thereby opening up the patient's tube. At the same time, the conical collection bag 3 is opened to collect the stone fragments. The conical collection bag 3 is used to open up the patient's tube to cover and wrap the crushing blade 12, thereby preventing the crushing blade 12 from damaging the inner wall of the patient's tube when crushing the stone.

[0044] The limiting component 65 includes a sliding round rod 66 disposed inside the sheath tube 11. A connecting rod 67 is disposed between one end of the sliding round rod 66 and the first connecting rod 64. The two ends of the second connecting rod 67 are rotatably connected to the first connecting rod 64 and the sliding round rod 66 respectively through a rotating shaft. The two ends of the second connecting rod 67 rotate relative to the first connecting rod 64 and the sliding round rod 66 respectively. A sliding sleeve 68 is fixedly connected to the connecting plate 61. The sliding round rod 66 slides through the sliding sleeve 68. When the support rod 2 is pushed to move and extend, the sliding round rod 66 is limited to move, so that the second connecting rod 67 pulls the first connecting rod 64 to deflect, thereby causing the support rod 2 to deflect and unfold.

[0045] A sliding sleeve 68 is also fixedly connected to the inner wall of the sheath 11. The sliding rod 66 slides through the sliding sleeve 68. A limiting protrusion 69 is fixedly connected to the sliding rod 66. A spring 71 is fixedly connected to one side of the limiting protrusion 69. The spring 71 is sleeved on the sliding rod 66. The sliding ring 4 is moved so that the spring 71 moves and comes into contact with the sliding sleeve 68. The sliding rod 66 is limited to move by the sliding sleeve 68 and the spring 71.

[0046] The two ends of the connecting rod 64 rotate relative to the support rod 2 and the deflection plate 63 respectively. The two ends of the connecting rod 64 are rotatably connected to the support rod 2 and the deflection plate 63 respectively through the rotating shaft. A synchronization component 72 is provided between the deflection plate 63 and the connecting plate 61. A spring 73 is fixedly connected between the sliding ring 4 and the moving ring 59. A limit block 86 is fixedly connected inside the sheath tube 11.

[0047] The push rod 57 is equipped with a top block 74. When the medical staff extends the support rod 2 out of the sheath tube 11, the sliding ring 4 moves and drives the moving ring 59 to move so that it contacts and abuts against the limiting block 86. At this time, the support rod 2 is in a deflected and unfolded state, and the top block 74 contacts and abuts against the limiting protrusion 69, so that the support rod 2 is opened.

[0048] After the medical staff completes the crushing operation with the crusher 12, they continue to move the sliding ring 4, compress the second spring 73, and at the same time use the top block 74 to push the limiting protrusion 69 to move, thereby driving the sliding round rod 66 to move, which in turn drives the second connecting rod 67 to move, so that the first connecting rod 64 folds inward. The synchronous component 72 drives the deflection support rod 2 to fold inward synchronously, so that the conical collection bag 3 closes. The conical collection bag 3 is then used to wrap the stones, making it easy to remove the stones at once, thereby avoiding damage to the inner wall of the patient's tube.

[0049] The synchronization component 72 includes an extension plate 75 fixedly connected to the inner side of the deflection plate 63, an extension plate 76 fixedly connected to the outer side of the connecting plate 61, and a connecting rod 77 rotatably connected between the extension plate 75 and the extension plate 76 via a pivot. The two ends of the connecting rod 77 rotate relative to the extension plate 75 and the extension plate 76 respectively, and the connecting rod 67 folds inward, thereby pushing the connecting plate 61 to fold inward synchronously.

[0050] The conical collection bag 3 has multiple evenly spaced holes 78 for draining the patient's body fluids, so that when the conical collection bag 3 is closed, the liquid between the stones can be drained in time.

[0051] The conical collection bag 3 is designed with an elastic material, and one end of it is fixedly connected to a hollow cylinder 79. The crushing and sliding blades pass through the hollow cylinder 79, which is made of the same material as the conical collection bag 3. The crushing blade 12 passes through the hollow cylinder 79. A linkage component 81 is set between the hollow cylinder 79 and the sliding ring 4. Moving the sliding ring 4 causes the support rod 2 to fold inward. At the same time, the linkage component 81 drives the hollow cylinder 79 to move, which pulls the conical collection bag 3 to help it close up. This also causes the leakage hole 78 to deform and tighten, thereby preventing the wrapped small stones from leaking out of the leakage hole 78. It also improves the wrapping shape of the stones, thereby reducing the chance of the stones scratching the patient's inner wall when they are removed from the patient's body.

[0052] The linkage component 81 includes a shaft 82 rotatably connected to the connecting plate 61 via a bearing. A lever 83 is fixedly connected to the shaft 82. One end of the lever 83 is fixedly connected to the hollow cylinder 79, and a pin 84 is fixedly connected to one side of the sliding ring 4. The pin 84 slides through the moving ring 59. When the support rod 2 is in the deflected and unfolded state, the end of the pin 84 contacts and abuts against one end of the lever 83. The sliding ring 4 is moved so that the pin 84 contacts and pushes one end of the lever 83 to deflect, thereby pulling the hollow cylinder 79, and then pulling the conical collection bag 3.

[0053] Example 1

[0054] Please see Figures 1-9 The present invention provides a technical solution: a lithotripsy device for urinary tract stones, and embodiment 2 is an optimization based on embodiment 1;

[0055] A friction wheel 85 is rotatably connected to the support rod 2 via a one-way bearing. The friction wheel 85 contacts the stone, allowing the stone to smoothly enter the conical collection bag 3 when the support rod 2 is extended and brought close to the stone by medical staff. At the same time, the one-way bearing design prevents the stone from moving backward and detaching from the conical collection bag 3, thus stabilizing and fixing the stone for easy crushing. Meanwhile, when the crushing blade 12 is crushing, it will generate vibration, which may drive the friction wheel 85 to roll, further moving the stone closer to the crushing blade 12 and improving the crushing effect.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithotripsy device for urinary tract stones, comprising a sheath connector (1) and a sheath tube (11) connected to the sheath connector (1), wherein a crushing blade (12) is provided at one end of the sheath tube (11) extending into the human body, characterized in that: It also includes: Support rod (2), the support rod (2) is provided in multiple parts, and the multiple support rods (2) are evenly distributed at one end of the sheath tube (11); A conical collection bag (3) is connected to multiple support rods (2) and stored together with the support rods (2) in a sheath (11); A sliding ring (4) is disposed inside the sheath (11); A drive assembly (5) is provided on the sheath (11) and the drive assembly (5) is used to drive the sliding ring (4) to move. An auxiliary component (6) is installed inside the sheath (11). The support rod (2) is connected to the sliding ring (4) through the auxiliary component (6). Moving the sliding ring (4) allows the auxiliary component (6) to drive multiple support rods (2) to extend out of the sheath (11) and deflect them outward to open the patient's tube. At the same time, the conical collection bag (3) is opened to collect the stones. Then, the sliding ring (4) is moved again, and the auxiliary component (6) drives the extended support rods (2) to bend inward to close the conical collection bag (3) and wrap the stones.

2. The lithotripsy device for urinary tract stones according to claim 1, characterized in that: The drive assembly (5) includes a rotating ring (51) disposed on the sheath joint (1). A plurality of toothed protrusions (52) are evenly and equidistantly disposed on one side of the rotating ring (51). A toothed disc (53) that meshes with the toothed protrusions (52) is disposed inside the sheath joint (1). A shaft (54) is disposed on the toothed disc (53). A transmission assembly (55) is disposed between the shaft (54) and the sliding ring (4). Rotating the rotating ring (51) drives the sliding ring (4) to move by means of the transmission assembly (55).

3. The lithotripsy device for urinary tract stones according to claim 2, characterized in that: The transmission assembly (55) includes a screw (56) mounted on the shaft (54), a push rod (57) is mounted on one side of the sliding ring (4), a slide plate (58) is mounted on one end of the push rod (57), and the screw (56) is threaded through the slide plate (58).

4. The lithotripsy device for urinary tract stones according to claim 3, characterized in that: The auxiliary component (6) includes a movable ring (59) disposed on one side of the sliding ring (4), a connecting plate (61) disposed on the movable ring (59), a shaft (62) disposed at one end of the connecting plate (61), a deflection plate (63) disposed on the shaft (62), a connecting rod (64) disposed between the deflection plate (63) and the connecting plate (61), a limiting component (65) disposed inside the sheath (11), the limiting component (65) being connected to the connecting rod (64), moving the movable ring (59) causes the support rod (2) to extend out of the sheath (11), and at the same time the limiting component (65) limits the movement of the connecting rod (64), thereby causing the support rod (2) to rotate and open relative to the shaft (54).

5. The lithotripsy device for urinary tract stones according to claim 4, characterized in that: The limiting component (65) includes a sliding round rod (66) disposed in the sheath (11). A connecting rod (67) is disposed between one end of the sliding round rod (66) and the connecting rod (64). The two ends of the connecting rod (67) rotate relative to the connecting rod (64) and the sliding round rod (66) respectively. A sliding sleeve (68) is disposed on the connecting plate (61). The sliding round rod (66) slides through the sliding sleeve (68). Pulling the sliding round rod (66) causes the connecting rod (64) to deflect. The inner wall of the sheath (11) is also provided with a sliding sleeve (68), and the sliding rod (66) slides through the sliding sleeve (68). The sliding rod (66) is provided with a limiting protrusion (69), and a spring (71) is provided on one side of the limiting protrusion (69). The spring (71) is sleeved on the sliding rod (66). The sliding ring (4) is moved so that the spring (71) moves and comes into contact with the sliding sleeve (68). The sliding rod (66) is limited to move by the sliding sleeve (68) and the spring (71).

6. The lithotripsy device for urinary tract stones according to claim 5, characterized in that: The two ends of the first connecting rod (64) rotate relative to the support rod (2) and the deflection plate (63) respectively, and a synchronization component (72) is provided between the deflection plate (63) and the connecting plate (61). A second spring (73) is provided between the sliding ring (4) and the moving ring (59). A limit block (86) is provided inside the sheath (11). The push rod (57) is provided with a top block (74). The moving ring (59) is moved to make it contact and abut against the limiting block (86). At the same time, the top block (74) contacts and abuts against the limiting protrusion (69), and at the same time, the support rod (2) is opened. Then the sliding ring (4) is moved to compress the second spring (73). At the same time, the top block (74) pushes the second connecting rod (67) to move, so that the first connecting rod (64) folds inward. The synchronous component (72) drives the deflection support rod (2) to fold inward synchronously, so that the conical collection bag (3) closes.

7. The lithotripsy device for urinary tract stones according to claim 6, characterized in that: The synchronization component (72) includes an extension plate 1 (75) disposed on the inner side of the deflection plate (63), an extension plate 2 (76) disposed on the outer side of the connecting plate (61), and a connecting rod 3 (77) disposed between the extension plate 1 (75) and the extension plate 2 (76). The two ends of the connecting rod 3 (77) rotate relative to the extension plate 1 (75) and the extension plate 2 (76) respectively, and the connecting rod 2 (67) is folded inward. The connecting rod 3 (77) pushes the connecting plate (61) to fold inward synchronously.

8. The lithotripsy device for urinary tract stones according to claim 7, characterized in that: The conical collection bag (3) has multiple holes (78) evenly spaced at equal intervals for draining the patient's body fluids; The conical collection bag (3) is made of elastic material and has a hollow cylinder (79) at one end. The hollow cylinder (79) and the conical collection bag (3) are made of the same material. The crushing blade (12) passes through the hollow cylinder (79). A linkage component (81) is provided between the hollow cylinder (79) and the sliding ring (4). Moving the sliding ring (4) causes the support rod (2) to fold inward. At the same time, the linkage component (81) drives the hollow cylinder (79) to move, thereby pulling the conical collection bag (3) to tighten it and to deform and tighten the leakage hole (78).

9. The lithotripsy device for urinary tract stones according to claim 8, characterized in that: The linkage component (81) includes a shaft three (82) set on the connecting plate (61), a lever (83) is set on the shaft three (82), one end of the lever (83) is fixed to the hollow cylinder (79), and a pin (84) is set on one side of the sliding ring (4). The pin (84) slides through the moving ring (59), and the moving sliding ring (4) causes the pin (84) to contact and push one end of the lever (83) to deflect.

10. The lithotripsy device for urinary tract stones according to claim 9, characterized in that: The support rod (2) is rotatably connected to a friction wheel (85) via a one-way bearing, and the friction wheel (85) contacts the stone.

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