A surgical removal instrument for gallbladder stones

Abstract

The present invention relates to the field of medical technology and discloses a gallstone surgical removal device, including: an operating tube, one end of the operating tube is connected with an insertion tube, a partition disc is fixedly sleeved in the middle of the inner cavity of the operating tube, and a stone clamping assembly is arranged in the inner cavity of the operating tube. After the stone clamping assembly clamps the stone, the stone clamping assembly can bring the stone into the inner cavity of the operating tube. Since a stone limiting assembly is arranged on one side of the inner cavity of the operating tube, the stone squeezes the contraction plate and the second spring, so that the stone enters between the stone clamping assembly and the partition disc. Then, by using the reset of the second spring, it is convenient to limit the stone between the stone limiting assembly and the partition disc, so that multiple stones can be temporarily stored in this removal device, which is convenient to take multiple stones at one time when this removal device enters the gallbladder, and avoids the removal device clamping the stone multiple times and entering and exiting from the gallbladder wound, causing damage to the wound.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and specifically to an instrument for surgically removing gallbladder stones. Background Art

[0002] Gallbladder stones are a common clinical disease and a type of cholelithiasis, mostly cholesterol stones or mixed stones mainly composed of cholesterol and melanin stones. Classified according to the composition of the stones, there are mainly cholesterol stones: formed on the premise of supersaturated bile cholesterol and under the action of nucleation-promoting factors. The lack of cholecystokinin receptors, bacteria, and immunoglobulins also affect the formation of cholesterol stones. Genes also play an important role in the process of stone formation. Pigment stones: Essentially, they are polymers formed by bilirubin and various metal ions such as Ca2+ and Mg2+. The reduction of bile acids, bacterial infection, glycoproteins, and free radicals can promote the formation of stones. In the treatment process of gallbladder stones, the common method is to remove the stones using a stone extractor during the operation. For the existing devices used for removing gallbladder stones, it is common to use a deformable stone extraction basket made of alloy for the extraction operation. The main operation process is to put the stone extraction basket loaded into the sleeve into the gallbladder, and then, in cooperation with the endoscope, the operator pulls the wire inside the sleeve, so that the stone extraction basket can be pushed out of the sleeve. After the stone extraction basket is pushed out, it unfolds. Then, the operator can only continuously move the stone up and down with the stone extraction basket to make the stone enter the stone extraction basket. The whole operation process is very energy-consuming and extremely inconvenient. After spending a long time getting the stone into the stone extraction basket, the operator retracts the wire, so that the wire drives the stone extraction basket to tighten and bind the stone, and then the sleeve together with the stone extraction basket is withdrawn from the gallbladder. However, due to the irregular surface of the stone, it is very difficult for the stone extraction basket to completely bind the stone tightly. During the extraction process, the stone extraction basket is constantly squeezed by the inner wall of the gallbladder, and it is very likely to squeeze off the stone, making the stone extraction operation more troublesome.

[0003] The Chinese invention patent with the publication number CN113813016A discloses a gallstone extractor, and the beneficial effects are as follows: on the one hand, by setting a swingable net bag in the stone extraction module of the present invention, it can cooperate with the shovel body arranged on the ring body to more conveniently load the stones in the gallbladder into the net bag. At the same time, by setting a deformable ring body on the net bag, after the stone extraction mechanism is retracted into the outer sleeve, the ring body is squeezed and deformed, thereby tightening the opening of the net bag, so that during the process of extracting the stone extractor from the gallbladder, the stones in the net bag will not run out due to the extrusion of the gallbladder inner wall; at the same time, during use, the blow nozzle in the driving mechanism can be held in the operator's mouth, so as to be controlled by the operator's own inhalation, so that when the operator operates the pulling mechanism and other mechanisms, there is no need to extra draw out a hand for operation, and the whole operation process can be completed by a single person, with higher efficiency and faster speed. However, not only one stone will grow in the gallbladder. When extracting multiple stones, the stone extractor needs to be used multiple times and enter the gallbladder back and forth, and the stone extractor contacts the wound multiple times, which is easy to cause damage to the wound. Summary of the Invention

[0004] The purpose of the present invention is to provide a surgical removal instrument for gallstones to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A surgical removal instrument for gallstones, including:

[0006] An operating tube, one end of the operating tube is connected with an insertion tube, a partition disc is fixedly sleeved in the middle of the inner cavity of the operating tube, and a stone clamping assembly is arranged in the inner cavity of the operating tube;

[0007] A stone limiting assembly, the stone limiting assembly is arranged on one side of the inner cavity, and the stone limiting assembly includes a sleeve, a contraction plate and a second spring. The sleeve is fixedly installed on the inner wall of the operating tube, the contraction plate is movably sleeved in the inner cavity of the sleeve, one side of the contraction plate is fixedly installed with a second spring, and one end of the second spring is fixedly installed on the inner wall of the operating tube.

[0008] As a further improvement of the present invention, a plurality of stone limiting assemblies distributed along the circumferential direction of the operating tube are arranged in the inner cavity of the operating tube, and the position of the contraction plate facing the center of the operating tube is triangular.

[0009] As a further improvement of the present invention, a plurality of second springs are arranged on one side of the contraction plate, and the contraction plate is hermetically and movably connected with the sleeve.

[0010] As a further improvement of the present invention, the stone clamping assembly includes a moving groove, a moving plate, an operating plate, a connecting plate, and a clamping part. Moving grooves are provided on both the upper and lower sides of the operating tube. The inner cavity of the moving groove is sleeved with a moving plate having a degree of freedom of movement. One side of the moving plate is connected to an operating plate, and the other side of the moving plate is connected to a connecting plate. The connecting plate passes through the partition disc and is connected to the clamping part. A crusher is connected to one side of the clamping part close to the operating tube.

[0011] As a further improvement of the present invention, the overall shape of the clamping part is arc-shaped, and the clamping part is located in the inner cavity of the insertion tube.

[0012] As a further improvement of the present invention, on both sides of the inner cavity of the operating tube, there are symmetrically distributed connecting plates and clamping parts. The sides of the two connecting plates away from the insertion tube are connected by a first telescopic rod. The outer side of the first telescopic rod is movably sleeved with a first spring, and both ends of the first spring are respectively fixedly connected to the two connecting plates.

[0013] As a further improvement of the present invention, on the other side of the inner cavity of the operating tube, there is a stone crushing auxiliary assembly. The stone crushing auxiliary assembly includes a first air cylinder, a pressing plate, a pressing rod, a first piston, an elastic force assembly, a through tube, a second air cylinder, a second piston, a cross plate, a connecting strip, a collecting plate, and a placement groove. A pressing plate is fixedly installed on one side of the connecting plate. In the inner cavity of the operating tube, a first air cylinder and a second air cylinder are respectively fixedly installed on one side of the partition disc. The inner cavity of the first air cylinder is movably sleeved with a first piston. One side of the first piston is fixedly installed with a pressing rod. A through tube is fixedly installed at the bottom of the first air cylinder. The other side of the first piston is connected to the first air cylinder by an elastic force assembly. One end of the through tube is connected to the second air cylinder. The inner cavity of the second air cylinder is movably sleeved with a second piston. One end of the second piston is connected to a cross plate. One side of the cross plate is connected to a connecting strip. A placement groove is opened on the inner wall of the insertion tube. A collecting plate located in the inner cavity of the placement groove is fixedly installed on one side of the connecting strip.

[0014] As a further improvement of the present invention, the middle part of the connecting strip is movably sleeved on the partition disc, and the connecting strip does not contact the stone limiting assembly.

[0015] As a further improvement of the present invention, the elastic force assembly includes a second telescopic rod and a third spring. Both ends of the second telescopic rod and both ends of the third spring are respectively connected to the first piston and the first air cylinder, and the third spring is sleeved on the outer side of the second telescopic rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] After the gallstone clamping component clamps a gallstone, the gallstone can be brought into the inner cavity of the operation tube by the gallstone clamping component. Since a gallstone limiting component is provided on one side of the inner cavity of the operation tube, the gallstone squeezes the contraction plate and the second spring, so that the gallstone enters between the gallstone clamping component and the partition disc. Then, by the reset of the second spring, it is convenient to limit the gallstone between the gallstone limiting component and the partition disc, so that multiple gallstones can be temporarily stored in this removal device, which is convenient to take multiple gallstones at one time when this removal device enters the gallbladder, avoiding the removal device clamping the gallstones multiple times and entering and exiting from the gallbladder wound, causing damage to the wound.

[0018] Since a gallstone crushing auxiliary component is provided in the inner cavity of the operation tube, when encountering a larger gallstone, the moving range of the connecting plate moving in the moving groove becomes longer, so that the clamping part extends out of the insertion tube for a longer distance. When the connecting plate moves, it drives the pressing plate to move, so that the pressing plate contacts the pressing rod, pushing the first piston to move, squeezing the gas in the first air cylinder. The gas enters the second air cylinder through the through pipe, squeezing the second piston. The collecting plate is driven by the cross plate and the connecting strip to move out of the insertion tube to support the bottom of the gallstone. The gallstone can be crushed by the crusher, and the crushed stones fall above the collecting plate, avoiding the situation that the crushed stones are scattered in the gallbladder and are difficult to clean up. And the collecting plate can pull the crushed stones into the insertion tube together with the clamping part. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of a gallstone surgical removal device of the present invention;

[0021] Figure 2 It is a sectional view of the operation tube of a gallstone surgical removal device of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the gallstone crushing auxiliary component of a gallstone surgical removal device of the present invention;

[0023] Figure 4 It is a sectional view of the first air cylinder of a gallstone surgical removal device of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the gallstone limiting component of a gallstone surgical removal device of the present invention;

[0025] Figure 6 Schematic diagram of the internal structure of the operating tube of a gallstone surgical removal device according to the present invention.

[0026] In the figure: 1, operating tube; 2, extending tube; 3, separating disc; 4, stone clamping assembly; 41, moving groove; 42, moving plate; 43, operating plate; 44, connecting plate; 45, clamping part; 46, first telescopic rod; 47, first spring; 5, stone limiting assembly; 501, sleeve; 502, shrinkage plate; 503, second spring; 6, stone crushing assisting assembly; 601, first air cylinder; 602, pressing plate; 603, pressing rod; 604, first piston; 605, elastic force assembly; 606, through tube; 607, second air cylinder; 608, second piston; 609, cross plate; 610, connecting strip; 611, collecting plate; 612, placing groove; 7, crusher. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1-6 , the present invention provides a gallstone surgical removal device, including:

[0029] An operating tube 1, one end of the operating tube 1 is connected with an extending tube 2, a separating disc 3 is fixedly sleeved in the middle of the inner cavity of the operating tube 1, and a stone clamping assembly 4 is arranged in the inner cavity of the operating tube 1;

[0030] A stone limiting assembly 5, the stone limiting assembly 5 is arranged on one side of the inner cavity, the stone limiting assembly 5 includes a sleeve 501, a shrinkage plate 502 and a second spring 503. The inner wall of the operating tube 1 is fixedly installed with the sleeve 501, the inner cavity of the sleeve 501 is movably sleeved with the shrinkage plate 502, one side of the shrinkage plate 502 is fixedly installed with the second spring 503, and one end of the second spring 503 is fixedly installed on the inner wall of the operating tube 1. After the stone clamping assembly 4 clamps the stone, the stone clamping assembly 4 can bring the stone into the inner cavity of the operating tube 1. Since there is a stone limiting assembly 5 on one side of the inner cavity of the operating tube 1, the stone squeezes the shrinkage plate 502 and the second spring 503, so that the stone enters between the stone clamping assembly 4 and the separating disc 3, and then the second spring 503 resets, which is convenient to limit the stone between the stone limiting assembly 5 and the separating disc 3, so that multiple stones can be temporarily stored in this removal device, which is convenient to take multiple stones at one time when this removal device enters the gallbladder, and avoids the removal device clamping the stone and entering and exiting from the gallbladder wound multiple times, causing damage to the wound.

[0031] In this embodiment, a plurality of calculus limiting components 5 distributed along the circumferential direction of the operation tube 1 are provided in the inner cavity of the operation tube 1, and the position of the contraction plate 502 facing the center of the operation tube 1 is triangular. By using the shape characteristics of the contraction plate 502, it is convenient for the calculus clamping component 4 to contact the contraction plate 502 with the calculus and cause extrusion on the contraction plate 502, facilitating the calculus to enter between the calculus limiting component 5 and the partition disc 3.

[0032] In this embodiment, a plurality of second springs 503 are provided on one side of the contraction plate 502, and the contraction plate 502 is hermetically and movably connected to the sleeve 501. Through the hermetically and movably connection between the contraction plate 502 and the sleeve 501, the entry of bile into the inner cavity of the sleeve 501 is reduced, avoiding the erosion of the second spring 503 by bile and affecting the service life of the second spring 503.

[0033] In this embodiment, the calculus clamping component 4 includes a moving groove 41, a moving plate 42, an operation plate 43, a connecting plate 44, and a clamping portion 45. Moving grooves 41 are provided on both the upper and lower sides of the operation tube 1, and the inner cavity of the moving groove 41 is sleeved with a moving plate 42 having a degree of freedom of movement. One side of the moving plate 42 is connected to an operation plate 43, the other side of the moving plate 42 is connected to a connecting plate 44, the connecting plate 44 passes through the partition disc 3 and is connected to the clamping portion 45, and a crusher 7 is connected to one side of the clamping portion 45 close to the operation tube 1. By controlling the movement of the moving plate 42 and the operation plate 43 in the moving groove 41, the clamping portion 45 is moved from inside the extension tube 2 to the position of the calculus, and the two operation plates 43 are mutually extruded, driving the two clamping portions 45 to move towards the position of the calculus, facilitating the clamping of the calculus so as to remove the calculus from the gallbladder.

[0034] In this embodiment, the overall shape of the clamping portion 45 is circular arc-shaped, and the clamping portion 45 is located inside the extension tube 2. By the shape characteristics of the clamping portion 45, it is convenient for the clamping portion 45 to adapt to the shape of the calculus and better clamp the calculus.

[0035] In this embodiment, symmetrically distributed connecting plates 44 and clamping portions 45 are provided on both sides of the inner cavity of the operation tube 1. The sides of the two connecting plates 44 away from the extension tube 2 are connected by a first telescopic rod 46, and a first spring 47 is movably sleeved on the outside of the first telescopic rod 46. The two ends of the first spring 47 are respectively fixedly connected to the two connecting plates 44. When the two connecting plates 44 are connected by the first telescopic rod 46 and the first spring 47, when releasing the calculus, only need to release the hand squeezing the operation plate 43, and the calculus can be separated from the clamping portion 45, facilitating the taking and placing of the calculus.

[0036] In this embodiment, a stone crushing auxiliary component 6 is provided on the other side of the inner cavity of the operating tube 1. The stone crushing auxiliary component 6 includes a first air cylinder 601, a pressing plate 602, a pressing rod 603, a first piston 604, an elastic component 605, a through tube 606, a second air cylinder 607, a second piston 608, a cross plate 609, a connecting strip 610, a collecting plate 611 and a placing groove 612. A pressing plate 602 is fixedly installed on one side of the connecting plate 44. In the inner cavity of the operating tube 1, a first air cylinder 601 and a second air cylinder 607 are respectively fixedly installed on one side of the partition disc 3. The first piston 604 is movably sleeved in the inner cavity of the first air cylinder 601. A pressing rod 603 is fixedly installed on one side of the first piston 604. A through tube 606 is fixedly installed at the bottom of the first air cylinder 601. The other side of the first piston 604 is connected to the first air cylinder 601 by an elastic component 605. One end of the through tube 606 is connected to the second air cylinder 607. The second piston 608 is movably sleeved in the inner cavity of the second air cylinder 607. One end of the second piston 608 is connected to a cross plate 609. A connecting strip 610 is connected to one side of the cross plate 609. A placing groove 612 is formed on the inner wall of the extending tube 2. A collecting plate 611 located in the inner cavity of the placing groove 612 is fixedly installed on one side of the connecting strip 610. By providing the stone crushing auxiliary component 6 in the inner cavity of the operating tube 1, when encountering a relatively large stone, the moving range of the connecting plate 44 moving in the moving groove 41 becomes longer, so that the clamping part 45 extends out of the extending tube 2 for a longer distance. When the connecting plate 44 moves, it drives the pressing plate 602 to move, so that the pressing plate 602 contacts the pressing rod 603, pushing the first piston 604 to move, squeezing the gas in the first air cylinder 601. The gas enters the second air cylinder 607 through the through tube 606, causing extrusion on the second piston 608. The cross plate 609 and the connecting strip 610 are used to drive the collecting plate 611 to move out of the extending tube 2, supporting the bottom of the stone. The stone can be crushed by the crusher 7, and the crushed stones fall above the collecting plate 611, avoiding the situation that the crushed stones are scattered in the gallbladder and are difficult to clean. Moreover, the collecting plate 611 can pull the crushed stones into the extending tube 2 together with the clamping part 45.

[0037] In this embodiment, the middle part of the connecting strip 610 is movably sleeved on the partition disc 3, and the connecting strip 610 does not contact the stone limiting component 5.

[0038] In this embodiment, the elastic component 605 includes a second telescopic rod and a third spring. The two ends of the second telescopic rod and the two ends of the third spring are respectively connected to the first piston 604 and the first air cylinder 601, and the third spring is sleeved outside the second telescopic rod.

[0039] Working principle: When using this device, by controlling the movement of the moving plate 42 and the operating plate 43 within the moving groove 41, the clamping portion 45 is moved from inside the insertion tube 2 to the position of the stone. The two operating plates 43 are squeezed against each other, driving the two clamping portions 45 to move towards the position of the stone to clamp the stone and remove the stone from the gallbladder.

[0040] Inside the inner cavity of the operating tube 1, there is a stone crushing auxiliary component 6. When encountering a relatively large stone, the pushing range of the connecting plate 44 within the moving groove 41 becomes longer, causing the clamping portion 45 to extend further out of the insertion tube 2. When the connecting plate 44 moves, it drives the pressing plate 602 to move, causing the pressing plate 602 to contact the pressing rod 603 and push the first piston 604 to move, squeezing the gas inside the first air cylinder 601. The gas enters the second air cylinder 607 through the connecting tube 606, exerting pressure on the second piston 608. Using the cross plate 609 and the connecting strip 610, the collecting plate 611 is driven to move out of the insertion tube 2 to support the bottom of the stone. The stone can be crushed using the crusher 7, and the crushed stones fall above the collecting plate 611, avoiding the situation where the crushed stones are scattered inside the gallbladder and are difficult to clean. Moreover, the collecting plate 611 can pull the crushed stones into the insertion tube 2 together with the clamping portion 45.

[0041] After the stone clamping component 4 clamps the stone, the stone clamping component 4 can bring the stone into the inner cavity of the operating tube 1. Since one side of the inner cavity of the operating tube 1 is provided with a stone limiting component 5, the stone exerts pressure on the contraction plate 502 and the second spring 503, causing the stone to enter between the stone clamping component 4 and the partition disc 3. Then, using the reset of the second spring 503, it is convenient to limit the stone between the stone limiting component 5 and the partition disc 3, enabling multiple stones to be temporarily stored inside this stripping device. This facilitates removing multiple stones at once when this stripping device enters the gallbladder, avoiding the damage to the wound caused by the stripping device clamping the stone and entering and exiting through the gallbladder wound multiple times.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surgical removal device for gallbladder stones, characterized in that Comprising: An operation tube (1), one end of the operation tube (1) is connected with an insertion tube (2), a partition disc (3) is fixedly sleeved in the middle of the inner cavity of the operation tube (1), and a stone clamping assembly (4) is arranged in the inner cavity of the operation tube (1); A stone limiting assembly (5), the stone limiting assembly (5) is arranged on one side of the inner cavity, the stone limiting assembly (5) includes a sleeve (501), a shrinkage plate (502) and a second spring (503), the inner wall of the operation tube (1) is fixedly installed with the sleeve (501), the shrinkage plate (502) is movably sleeved in the inner cavity of the sleeve (501), one side of the shrinkage plate (502) is fixedly installed with the second spring (503), and one end of the second spring (503) is fixedly installed on the inner wall of the operation tube (1); The stone clamping assembly (4) includes a moving groove (41), a moving plate (42), an operation plate (43), a connecting plate (44), and a clamping part (45). Moving grooves (41) are formed on both the upper and lower sides of the operation tube (1), the inner cavity of the moving groove (41) is sleeved with a moving plate (42) having a moving degree of freedom, one side of the moving plate (42) is connected with an operation plate (43), the other side of the moving plate (42) is connected with a connecting plate (44), the connecting plate (44) passes through the partition disc (3) and is connected with the clamping part (45), and a crusher (7) is connected to one side of the clamping part (45) close to the operation tube (1); On the other side of the inner cavity of the operation tube (1), there is a stone crushing auxiliary assembly (6). The stone crushing auxiliary assembly (6) includes a first air cylinder (601), a pressing plate (602), a pressing rod (603), a first piston (604), an elastic force assembly (605), a through pipe (606), a second air cylinder (607), a second piston (608), a transverse plate (609), a connecting strip (610), a collecting plate (611) and a placing groove (612). One side of the connecting plate (44) is fixedly installed with the pressing plate (602). In the inner cavity of the operation tube (1), a first air cylinder (601) and a second air cylinder (607) are respectively fixedly installed on one side of the partition disc (3). The inner cavity of the first air cylinder (601) is movably sleeved with the first piston (604). One side of the first piston (604) is fixedly installed with the pressing rod (603). A through pipe (606) is fixedly installed at the bottom of the first air cylinder (601). The other side of the first piston (604) is connected with the first air cylinder (601) by the elastic force assembly (605). One end of the through pipe (606) is connected with the second air cylinder (607). The inner cavity of the second air cylinder (607) is movably sleeved with the second piston (608). One end of the second piston (608) is connected with the transverse plate (609). One side of the transverse plate (609) is connected with the connecting strip (610). A placing groove (612) is formed on the inner wall of the insertion tube (2). One side of the connecting strip (610) is fixedly installed with the collecting plate (611) located in the inner cavity of the placing groove (612).

2. The gallstone surgical removal instrument according to claim 1, wherein, A plurality of stone limiting components (5) distributed along the circumferential direction of the operation tube (1) are arranged in the inner cavity of the operation tube (1), and the position of the contraction plate (502) facing the center of the operation tube (1) is triangular.

3. The surgical removal instrument for gallbladder stones according to claim 1, characterized in that, A plurality of second springs (503) are arranged on one side of the contraction plate (502), and the contraction plate (502) is hermetically and movably connected to the sleeve (501).

4. A gallstone surgical removal instrument according to claim 1, characterized in that, The whole of the clamping part (45) is arc-shaped, and the clamping part (45) is located in the inner cavity of the insertion tube (2).

5. A gallstone surgical removal instrument according to claim 1, characterized in that, A connecting plate (44) and a clamping part (45) which are symmetrically distributed are arranged on both sides of the inner cavity of the operation tube (1). The sides of the two connecting plates (44) far away from the insertion tube (2) are connected by a first telescopic rod (46). The outer side of the first telescopic rod (46) is movably sleeved with a first spring (47), and the two ends of the first spring (47) are respectively fixedly connected to the two connecting plates (44).

6. The surgical removal instrument for gallbladder stones according to claim 1, characterized in that, The middle part of the connecting bar (610) is movably sleeved on the partition disc (3), and the connecting bar (610) does not contact the stone limiting component (5).

7. A surgical removal device for gallbladder stones according to claim 1, characterized in that, The elastic force component (605) comprises a second telescopic rod and a third spring. The two ends of the second telescopic rod and the two ends of the third spring are respectively connected to the first piston (604) and the first air cylinder (601), and the third spring is sleeved on the outer side of the second telescopic rod.

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