Stomach stone lithotripsy instrument and method

Abstract

The present invention relates to a gastric calculus lithotripsy apparatus, comprising: a steel wire forming a ferrule to sleeve a gastric calculus; the pushing assembly drives the steel wire to stretch out and introduces the steel wire to the gastric calculus position; the elastic pressure applying assembly provides elastic contraction force after the steel wire sleeves the gastric calculus so as to enable the steel wire to tightly bind the gastric calculus; and the reciprocating driving assembly is connected with the steel wire in a driving manner so as to drive the steel wire to do reciprocating motion in a state of tightly binding the gastric calculi to cut the gastric calculi. In addition, the invention also relates to a corresponding gastric calculus lithotripsy method. According to the invention, the lithotripsy efficiency is improved, the operation stability is enhanced, and the time consumption of repeated operation and adjustment is avoided, so that the whole operation duration is effectively shortened, the discomfort of a patient in an operation and the complication risk possibly caused by long-time operation are reduced, and the operation safety is improved. Meanwhile, due to the stable operation, accidental injuries possibly caused to gastric mucosa due to repeated pulling are reduced, and the safety of the operation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and more particularly to a gastric stone crushing device and method. Background Art

[0002] Gastric stones are a common digestive tract disease in clinical practice. For larger gastric stones, endoscopic lithotripsy is currently the most commonly used treatment in clinical practice. The core idea is to use endoscope-guided instruments to break the stones into small pieces, soften them with drugs, and finally excrete them from the body through the digestive tract.

[0003] In existing endoscopic lithotripsy operations, the mainstream method is to use a steel wire to form a loop, and after encircling the gastric stone with the help of an endoscope, the steel wire is pulled by external force, and the stone is cut or torn into small pieces by relying on the tension of the steel wire. However, gastric stones are often hard in texture and smooth on the surface, which brings significant limitations to existing lithotripsy operations: on the one hand, due to the high hardness of the stones, it is difficult to quickly cut the stones simply by pulling the steel wire, resulting in a long lithotripsy process; on the other hand, the smooth surface makes it easy for the steel wire loop to slip off the surface of the gastric stone, requiring the doctor to repeatedly adjust the position of the loop and pull it multiple times, which not only increases the difficulty of the operation and reduces the efficiency of lithotripsy, but may also increase the patient's discomfort and surgical risks due to the prolonged operation time. Therefore, in the existing gastric stone lithotripsy process, it is difficult to pull the steel wire hard to cut the stone, which affects the efficiency of the operation.

[0004] Therefore, given the hard and smooth characteristics of gastric stones, how to optimize the lithotripsy instruments and operation methods under endoscopy, avoid wire loop slippage, shorten lithotripsy time, and improve lithotripsy stability and efficiency has become a technical problem that needs to be urgently solved in clinical practice. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention, based on the relatively hard and smooth nature of gastric stones, employs an endoscopic method. After enclosing a gastric stone with a steel wire, a certain force is applied to the stone's surface. The steel wire then rubs back and forth against the stone, cutting the stone like a micro-toothed saw. This avoids the conventional problem of the stone slipping out of the wire loop when pulling the wire, shortening lithotripsy, providing doctors with more stable lithotripsy, and improving lithotripsy efficiency. Thus, the present invention solves the difficulty of gastric stone fragmentation and improves surgical efficiency.

[0006] In order to solve the above technical problems or achieve the above objectives, the present invention adopts the following technical solutions: According to one aspect of the present invention, there is provided a gastric stone crushing device, comprising: Steel wire, which is formed into a loop to trap gastric stones; A pushing component, which drives the steel wire to extend and guide the steel wire to the location of the gastric stone; An elastic pressure component, which provides elastic contraction force after the steel wire is wrapped around the gastric stone so that the steel wire can tightly bind the gastric stone; The reciprocating drive component is drivingly connected to the steel wire to drive the steel wire to do reciprocating motion in a state of tightly binding the gastric stone so as to cut the gastric stone.

[0007] In one embodiment of the present invention, the push component includes: A steel wire conduit, wherein a retractable steel wire is sheathed inside the steel wire conduit; A support sleeve, which is installed at one end of the steel wire conduit extending from the steel wire; A fixed tube connected to the other end of the steel wire conduit; A head cover connected to the fixed tube; The push handle drives the steel wire to extend through the head cover, the fixing tube, the steel wire catheter and the support sleeve to introduce the steel wire into the location of the gastric stone.

[0008] In one embodiment of the present invention, the head cover cooperates with the card slot of the endoscope.

[0009] In one embodiment of the present invention, the elastic pressure component includes: a first spring, the first spring being arranged on the push handle, the first spring being compressed as the push handle is pushed and providing elastic contraction force to tighten the steel wire as the push handle is released; A steel wire fixed moving member connected to the steel wire and linked to the push handle; The second spring is arranged on the steel wire fixing and moving part. The second spring is compressed as the steel wire fixing and moving part pushes and provides elastic contraction force to tighten the steel wire as the steel wire fixing and moving part retracts.

[0010] In one embodiment of the present invention, the reciprocating drive assembly comprises: A reciprocating motion structure, the reciprocating motion structure is connected to the steel wire; The motor is in transmission connection with the reciprocating motion structure, and the motor drives the reciprocating motion structure to make the steel wire reciprocate while tightly binding the gastric stone to cut the gastric stone; The motor fixed guide box can move and wrap the motor, the reciprocating motion structure, the steel wire fixed moving part and the second spring, and the motor fixed guide box is linked to the push handle.

[0011] In one embodiment of the present invention, the reciprocating motion structure includes a gear and a gear meshing frame, wherein the gear meshing frame is engaged with the gear, the gear meshing frame is connected to the steel wire, and the motor drives the gear to rotate, driving the gear meshing frame to perform reciprocating motion to drive the steel wire to perform reciprocating motion.

[0012] In one embodiment of the present invention, the reciprocating motion structure includes a rotating cam and a cylinder, wherein the rotating cam is connected to the cylinder, the cylinder is connected to the steel wire, and the motor drives the rotating cam to rotate, pushing the cylinder to perform reciprocating motion to drive the steel wire to perform reciprocating motion.

[0013] In one embodiment of the present invention, the reciprocating motion structure includes a swingable gear, wherein the swingable gear is connected to the motor shaft of the motor, the swingable gear is connected to the steel wire, and the motor shaft drives the swingable gear to swing to drive the steel wire to reciprocate.

[0014] In one embodiment of the present invention, the gastric stone crushing device further comprises: The shell assembly is connected between the head cover and the push handle. The shell assembly includes a detachable and matching upper shell and lower shell. The motor fixing guide box is wrapped in the shell assembly, and a motor switch key for controlling the start and stop of the motor is provided on the shell assembly.

[0015] In one embodiment of the present invention, a guide rail is formed in the shell assembly, the motor fixed guide box moves on the guide rail, the wire fixed moving part moves with the overall movement of the motor fixed guide box, and the wire fixed moving part reciprocates along the guide rail when the steel wire reciprocates.

[0016] According to another aspect of the present invention, a method for crushing gastric stones is provided, using the gastric stone crushing apparatus as described above, comprising the following steps: Push the pushing assembly to extend the steel wire and introduce it into the location of the gastric stone, so that the steel wire forms a loop to trap the gastric stone; Release the pushing component, and the elastic contraction force provided by the elastic pressure component will make the steel wire tightly attached to the surface of the gastric stone; The reciprocating drive assembly is activated to drive the steel wire binding the gastric calculus to reciprocate, while the elastic pressure assembly provides elastic contraction force to keep the steel wire binding the gastric calculus tightly, thereby sawing the gastric calculus into pieces; After the gastric stones are cut into gravel, the reciprocating drive component is stopped, and the pushing component is operated to retract the steel wire.

[0017] In one embodiment of the present invention, the gastric stone crushing method further comprises the following steps: Remove the head cover of the pushing assembly from the endoscope slot, hold the shell assembly, pull out the wire catheter, support sleeve and wire to complete the lithotripsy operation.

[0018] The technical solution provided by the present invention has the following advantages compared with the prior art: The present invention uses a reciprocating drive assembly to drive the steel wire to perform a reciprocating frictional motion while tightly binding the gastric stone. This motion is similar to the cutting action of a micro-tooth saw. Compared to the prior art method of simply pulling the steel wire, this method can more quickly cut through hard, smooth gastric stones, avoiding repeated pulling operations caused by gastric stones slipping out of the ring or due to high hardness, significantly improving lithotripsy efficiency. At the same time, the elastic contraction force provided by the elastic pressure assembly in the present invention can keep the steel wire tightly bound to the surface of the gastric stone, effectively avoiding the problem of stones easily slipping out of the ring when pulling the steel wire in the prior art. This provides stable lithotripsy conditions for doctors and reduces the number of adjustments during the operation.

[0019] The present invention improves lithotripsy efficiency and enhances operational stability, avoids time consumption of repeated operations and adjustments, thereby effectively shortening the overall operation time, reducing the patient's discomfort during the operation and the risk of complications caused by prolonged operation. At the same time, stable operation reduces accidental damage to the gastric mucosa caused by repeated pulling, thereby improving the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the description of the embodiments or the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a gastric stone crushing device provided in one embodiment of the present invention is shown; Figure 2 FIG1 shows a top view of a gastric stone crushing device provided in one embodiment of the present invention; Figure 3 FIG1 shows a side view of a gastric stone crushing device provided in one embodiment of the present invention; Figure 4 A schematic diagram of the internal structure of a gastric stone crushing device provided in one embodiment of the present invention is shown; Figure 5 A schematic diagram of a portion of the structure of a gastric stone crushing device provided in one embodiment of the present invention in a stone crushing state; Figure 6 A partial structural cross-sectional view of a gastric stone crushing device in a retracted state provided in one embodiment of the present invention is shown; Figure 7A schematic diagram showing a reciprocating motion structure in a gastric stone crushing device provided in one embodiment of the present invention is shown; Figure 8 A schematic diagram showing a reciprocating motion structure in a gastric stone crushing device provided in another embodiment of the present invention is shown; Figure 9 A schematic flow chart of a gastric stone crushing method provided in one embodiment of the present invention is shown.

[0023] Among them, 1. push handle; 2. first spring; 3. upper shell; 4. lower shell; 5. head cover; 6. fixing tube; 7. wire guide tube; 8. support sleeve; 9. wire; 10. motor switch; 11. motor; 12. gear; 13. gear meshing frame; 14. wire fixing member; 15. second spring; 16. motor fixing guide box; 17. shell assembly; 18. gastric stone; 19. swingable gear; 20. guide rail. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the embodiments of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways than those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] like Figure 1-6 As shown, in one embodiment of the present invention, a gastric stone crushing device is provided, comprising: a steel wire 9, the steel wire 9 forming a loop to trap the gastric stone 18; A pushing component drives the steel wire 9 to extend and introduce the steel wire 9 to the location of the gastric stone; An elastic pressure component, which provides elastic contraction force after the steel wire 9 is wrapped around the gastric stone 18 so that the steel wire 9 is tightly bound to the gastric stone 18; The reciprocating drive assembly is drivingly connected to the steel wire 9 to drive the steel wire 9 to reciprocate in a state of tightly binding the gastric stone 18 to cut the gastric stone 18 .

[0027] The present invention drives the steel wire to perform reciprocating friction motion while tightly binding the gastric stones through a reciprocating drive component, which is similar to the cutting effect of a micro-tooth saw. Compared with the method of simply pulling the steel wire in the prior art, it can cut hard and smooth gastric stones more quickly, avoid repeated pulling operations caused by gastric stones slipping out of the ring or high hardness, and significantly improve the efficiency of lithotripsy. At the same time, the elastic contraction force provided by the elastic pressure component of the present invention can make the steel wire always tightly bound to the surface of the gastric stone, effectively avoiding the problem of stones easily slipping out of the ring when pulling the steel wire in the prior art, providing stable lithotripsy conditions for doctors to operate, and reducing the number of adjustments during the operation. The above technical solution of the present invention improves lithotripsy efficiency and enhances operational stability, avoids the time consumption of repeated operations and adjustments, thereby effectively shortening the overall operation time, reducing the patient's discomfort during the operation and the risk of complications that may be caused by long-term operation, and at the same time, stable operation reduces accidental damage to the gastric mucosa that may be caused by repeated pulling, thereby improving the safety of the operation.

[0028] In the above embodiments of the present invention, Figure 1-4 As shown, the push components include: A steel wire conduit 7, wherein a retractable steel wire 9 is sleeved inside the steel wire conduit 7; A support sleeve 8, which is installed at one end of the steel wire conduit 7 extending from the steel wire 9; A fixed tube 6 connected to the other end of the steel wire conduit 7; A head cover 5 is connected to a fixing tube 6; The push handle 1 drives the steel wire 9 to extend through the head cover 5, the fixing tube 6, the steel wire catheter 7 and the supporting sleeve 8 to introduce the steel wire 9 to the position of the gastric stone.

[0029] In the above embodiments of the present invention, Figure 1-4 As shown, the head cover 5 cooperates with the card slot (not shown) of the endoscope.

[0030] In the above embodiments of the present invention, Figure 1-5 As shown, the elastic pressure component includes: A first spring 2 is provided on the push handle 1. The first spring 2 is compressed as the push handle 1 is pushed and provides an elastic contraction force to tighten the steel wire 9 as the push handle 1 is released. A steel wire fixing and moving member 14 is connected to the steel wire 9 and is linked to the push handle 1; The second spring 15 is provided on the steel wire fixing and moving member 14 . The second spring 15 is compressed as the steel wire fixing and moving member 14 pushes and provides elastic contraction force to tighten the steel wire 9 as the steel wire fixing and moving member 14 retracts.

[0031] In the above embodiments of the present invention, Figure 4As shown, the reciprocating drive assembly includes: A reciprocating motion structure connected to the steel wire 9; The motor 11 is in transmission connection with the reciprocating motion structure. The motor 11 drives the reciprocating motion structure to make the steel wire 9 reciprocate while tightly binding the gastric stone 18 to cut the gastric stone 18; The motor fixed guide box 16 can move and wrap the motor 11, the reciprocating motion structure, the steel wire fixed moving part 14 and the second spring 15, and the motor fixed guide box 16 is linked to the push handle 1.

[0032] In the above embodiments of the present invention, Figure 4 and 7 As shown, the reciprocating motion structure includes a gear 12 and a gear meshing frame 13, wherein the gear meshing frame 13 is meshed with the gear 12, and the gear meshing frame 13 is connected to the steel wire 9. The motor 11 drives the gear 12 to rotate, driving the gear meshing frame 13 to perform reciprocating motion to drive the steel wire 9 to perform reciprocating motion.

[0033] In the above embodiment of the present invention, optionally, the reciprocating motion structure includes a rotating cam (not shown in the figure) and a cylinder (not shown in the figure), wherein the rotating cam is connected to the cylinder, the cylinder is connected to the steel wire 9, and the motor 11 drives the rotating cam to rotate, pushing the cylinder to perform reciprocating motion to drive the steel wire 9 to perform reciprocating motion.

[0034] In the above embodiments of the present invention, alternatively, as Figure 8 As shown, the reciprocating motion structure includes a swingable gear 19, wherein the swingable gear 19 is connected to the motor shaft of the motor 11, and the swingable gear 19 is connected to the steel wire 9. The motor shaft drives the swingable gear 19 to swing to drive the steel wire 9 to reciprocate.

[0035] In the above embodiments of the present invention, Figure 1-4 As shown, gastric stone crushing equipment also includes: The shell assembly 17 is connected between the head cover 5 and the push handle 1. The shell assembly 17 includes a detachable and matching upper shell 3 and a lower shell 4. The motor fixing guide box 16 is wrapped in the shell assembly 17, and the shell assembly 17 is provided with a motor switch 10 for controlling the start and stop of the motor.

[0036] In the above embodiment of the present invention, a guide rail 20 is formed in the shell assembly 17, the motor fixed guide box 16 moves on the guide rail 20, the wire fixed moving member 14 moves with the overall movement of the motor fixed guide box 16, and the wire fixed moving member 14 moves back and forth along the guide rail 20 when the steel wire 9 makes a reciprocating motion.

[0037] In addition, if Figure 9As shown, an embodiment of the present invention further provides a method for crushing gastric stones, using the gastric stone crushing device as described above, comprising the following steps: S1: Push the pushing assembly to extend the steel wire and introduce it into the location of the gastric stone, so that the steel wire forms a loop to trap the gastric stone; S2: Release the pushing component, and use the elastic contraction force provided by the elastic pressure component to tightly bind the steel wire to the surface of the gastric stone; S3: starting the reciprocating drive component to drive the steel wire binding the gastric stone to reciprocate, while the elastic pressure component provides elastic contraction force to keep the steel wire binding the gastric stone tightly, so as to saw the gastric stone into pieces; S4: After the gastric stones are cut into gravel, the reciprocating drive component is stopped, and the pushing component is operated to retract the steel wire.

[0038] In the above embodiment of the present invention, the gastric stone crushing method further comprises the following steps: Remove the head cover of the pushing assembly from the endoscope slot, hold the shell assembly, pull out the wire catheter, support sleeve and wire to complete the lithotripsy operation.

[0039] The above technical solution of the present invention is described in detail below through specific embodiments.

[0040] Refer again Figure 1-7 As shown, in one embodiment of the present invention, a gastric stone crushing device is provided, including: a push handle 1, a first spring 2, a shell assembly 17 (an upper shell 3 and a lower shell 4), a head cover 5, a fixing tube 6, a steel wire guide tube 7, a support sleeve 8, a steel wire 9, a motor switch 10, a motor 11, a gear 12, a gear engagement frame 13, a steel wire fixing member 14, a second spring 15 and a motor fixing guide box 16.

[0041] A retractable steel wire 9 is sleeved inside the steel wire catheter 7, and a support sleeve 8 is installed at one end of the steel wire catheter 7 where the steel wire 9 extends out, namely, the left end shown in the figure, and a fixed tube 6 is connected to the other end of the steel wire catheter 7, namely, the right end shown in the figure, and a head cover 5 is connected to the fixed tube 6 and can cooperate with the card slot of the endoscope (not shown), and the head cover 5 is connected to the left end of the shell assembly 17, and the push handle 1 is connected to the right end of the shell assembly 17. The push handle 1 drives the steel wire 9 to extend through the head cover 5, the fixed tube 6, the steel wire catheter 7 and the support sleeve 8 to introduce the steel wire 9 into the position of the gastric stone. The extended steel wire 9 forms a loop for enclosing the gastric stone 18, as shown specifically in FIG. Figure 5 shown.

[0042] A first spring 2 is disposed on the push handle 1. The first spring 2 compresses as the push handle 1 is pushed and provides an elastic contraction force to tighten the steel wire 9 as the push handle 1 is released. The housing assembly 17 includes a removable upper housing 3 and a lower housing 4 that are matingly mounted. A motor fixing guide box 16 is enclosed within the housing assembly 17, and a motor switch 10 for controlling the start and stop of the motor 11 is disposed on the housing assembly 17 (preferably on the lower housing 4). The motor fixing guide box 16 is interlockingly connected to the push handle 1 and further includes a guide rail 20 formed within the housing assembly 17, on which the motor fixing guide box 16 can move. The motor fixing guide box 16 encloses the motor 11, the gear 12, the gear meshing frame 13, the steel wire fixing member 14, and the second spring 15. Motor switch 10 is used to start and stop motor 11. A wire retaining member 14 is connected to wire 9 (the wire that forms one side of the wire loop) and is linked to push handle 1. A second spring 15 is mounted on wire retaining member 14. This second spring 15 compresses as wire retaining member 14 pushes and provides an elastic contraction force to tighten wire 9 as wire retaining member 14 retracts. Thus, first spring 2 and second spring 15 provide an elastic contraction force after wire 9 has encircled a gastric stone 18, securing it against the stone.

[0043] In the above structure, the push handle 1 is pushed, and the push handle 1 drives the motor fixed guide box 16 to move forward along the guide rail 20 in the shell assembly 17 through the linkage structure. The steel wire fixed moving part 14 moves forward synchronously with the motor fixed guide box 16. At this time, the second spring 15 is compressed to store elastic potential energy. At the same time, the steel wire 9 extends through the steel wire guide tube 7 and the support sleeve 8 to form a loop and wrap around the gastric stone 18; after releasing the push handle 1, the elastic contraction force of the first spring 2 and the second spring 15 pulls the push handle 1 and the steel wire fixed moving part 14 to move in the opposite direction, driving the steel wire 9 to retract, so that the loop is tightly bound to the surface of the gastric stone 18.

[0044] The gear meshing frame 13 and the gear 12 form a reciprocating motion structure, and the reciprocating motion structure is connected to the steel wire 9. The motor 11 drives the reciprocating motion structure to make the steel wire 9 reciprocate and rub in a state of tightly binding the gastric stone 18 to cut the gastric stone 18. Specifically, in the reciprocating motion structure, the gear 12 is meshed with the gear meshing frame 13, and the gear meshing frame 13 is connected to the steel wire 9 (the steel wire forming the other side of the steel wire loop). The motor 11 drives the gear 12 to rotate, driving the gear meshing frame 13 to reciprocate to drive the steel wire 9 to reciprocate and rub to cut the gastric stone 18. Figure 5 Since the steel wire fixed moving member 14 is also connected to the steel wire 9, the reciprocating motion of the steel wire 9 is directly transmitted to the steel wire fixed moving member 14, causing it to slide back and forth along the guide rail 20 in the housing assembly 17.

[0045] When the above-described gastric stone crushing device is in operation, the head cover 5 is secured to the endoscope slot, and the push handle 1 is pushed to guide the steel wire 9 to the gastric stone location. The push handle 1 is moved a distance based on the size of the gastric stone. After the steel wire 9 encircles the gastric stone 18, the push handle 1 is released. The first spring 2 and the second spring 15 provide elastic retraction force to secure the steel wire to the gastric stone 18. The motor switch 10 on the housing 4 is then pressed, starting the motor 11 to rotate and drive the gear 12 on the motor shaft. The gear drives the gear meshing frame 13 to reciprocate, thereby causing the steel wire 9, which is fixed to the gear meshing frame 13, to reciprocate. As the steel wire 9 reciprocates, the wire fixing member 14 and the second spring 15, driven by the steel wire 9, simultaneously reciprocate along the guide rail 20. As the steel wire 9 moves, the elastic retraction force of the first spring 2 and the second spring 15 is applied to the gastric stone 18 through the steel wire 9. The gastric stone 18 is shattered by the force applied by the steel wire 9 and the reciprocating movement of the steel wire 9. After the gastric stone 18 is sawed apart, the motor switch 10 is pressed again to stop the motor 11. The push handle 1 can then be operated to retract the steel wire 9. The head cover 5 is removed from the endoscope slot. The left hand holds the housing assembly 17 consisting of the upper housing 3 and the lower housing 4 and pulls out the steel wire sleeve 7, the support sleeve 8, and the steel wire 9. This marks the end of the operation.

[0046] Of course, alternatively, this step can also be followed when the above-mentioned gastric stone crushing device is in operation. The head cover 5 is clamped and fixed on the endoscope card slot. The operator can hold the shell assembly 17 composed of the upper shell 3 and the lower shell 4 with his left hand, and push the push handle 1 to the maximum stroke with his right hand, introduce the steel wire 9 to the gastric stone position, wrap it around the gastric stone 18, and then slowly release the push handle 1. At this time, the first spring 2 and the second spring 15 retract and tighten the gastric stone 18. Press the motor switch 10 with your finger to start the motor 11. The motor shaft of the motor 11 rotates to drive the gear 12. The gear 12 drives the gear meshing frame 13 to drive the steel wire 9. The steel wire 9 pulls the steel wire fixing member 14 and the second spring 15 to slide back and forth on the guide rail 20 formed in the shell assembly 17 composed of the upper shell 3 and the lower shell 4. The steel wire 9 is tightened by the elastic contraction force of the first spring 2 and the second spring 15 at the same time. The steel wire 9 moves back and forth quickly to saw the gastric stone 18 into pieces. After the gastric stone 18 is sawed into pieces, press the motor switch 10 again to stop the motor 11, then operate the push handle 1 to retract the steel wire 9, remove the head cover 5 from the endoscope slot, hold the shell assembly 17 composed of the upper shell 3 and the lower shell 4 with your left hand, pull out the steel wire sleeve 7, support sleeve 8 and steel wire 9, and the operation is completed.

[0047] In addition, in the structure of the above embodiment, the reciprocating motion structure of the steel wire 9 under applied pressure is not necessarily a structure of the gear 12 and the gear meshing frame 13, and a structure of a rotating cam and a cylinder can also be adopted, wherein the rotating cam is connected to the cylinder, and the cylinder is connected to the steel wire 9, and the motor 11 drives the rotating cam to rotate, pushing the cylinder to do reciprocating motion to drive the steel wire 9 to do reciprocating motion. Of course, in other optional embodiments, the reciprocating motion structure of the steel wire 9 under applied pressure can also be achieved by a structure in which the motor shaft drives the swingable gear 19 to swing, such as Figure 8 As shown, the swingable gear 19 is connected to the motor shaft of the motor 11, and the swingable gear 19 is directly connected to the steel wire 9. The motor shaft drives the swingable gear 19 to swing back and forth counterclockwise and clockwise to drive the steel wire 9 to do reciprocating motion.

[0048] It can be seen from this that the present invention can drive the steel wire to do reciprocating friction motion in the state of tightly binding the gastric stones, similar to the cutting effect of a micro-tooth saw. Compared with the method of simply pulling the steel wire in the prior art, it can cut off hard and smooth gastric stones more quickly, avoid repeated pulling operations caused by stones slipping out of the ring or high hardness, and significantly improve the efficiency of lithotripsy. At the same time, the present invention can make the steel wire always tightly bound to the surface of the gastric stones, effectively circumventing the problem that stones easily slip out of the ring when pulling the steel wire in the prior art, providing stable lithotripsy conditions for doctors to operate, and reducing the number of adjustments during the operation. Therefore, the present invention improves lithotripsy efficiency and enhances operational stability, avoids the time consumption of repeated operations and adjustments, thereby effectively shortening the overall operation time, reducing the patient's discomfort during the operation and the risk of complications that may be caused by long-term operation, and at the same time, stable operation reduces the accidental damage to the gastric mucosa that may be caused by repeated pulling, thereby improving the safety of the operation. It can be seen that the present invention solves the problem of difficult gastric stone lithotripsy and improves the efficiency and safety of the operation.

[0049] 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 entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to the process, method, article or device. In the absence of further limitations, an element defined by the sentence "including a..." does not exclude the presence of additional identical elements in the process, method, article or device that includes the element.

[0050] The foregoing description is intended to be merely an embodiment of the present invention, which is intended to enable those skilled in the art to understand and implement the present invention. Various modifications to the described embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Claims

1. A gastric stone lithotripsy device, characterized in that: include: a steel wire formed into a loop to trap the gastric stone; A pushing assembly, which drives the steel wire to extend and guide the steel wire to the location of the gastric stone; an elastic pressure-applying component, which provides an elastic contraction force after the steel wire is wrapped around the gastric stone so as to tightly bind the steel wire to the gastric stone; A reciprocating drive assembly is drivingly connected to the steel wire to drive the steel wire to reciprocate while tightly binding the gastric stone to cut the gastric stone.

2. The gastric stone crushing device according to claim 1, characterized in that: The push component includes: A steel wire conduit, wherein the retractable steel wire is sleeved inside the steel wire conduit; A support sleeve, the support sleeve being installed at one end of the steel wire conduit extending from the steel wire; a fixed tube connected to the other end of the steel wire conduit; a head cover connected to the fixing tube; A push handle drives the steel wire to extend through the head cover, the fixing tube, the steel wire catheter and the supporting sleeve to introduce the steel wire to the location of the gastric stone.

3. The gastric stone crushing device according to claim 2, characterized in that: The head cover is matched with the card slot of the endoscope.

4. The gastric stone crushing device according to claim 2, characterized in that: The elastic pressure component includes: a first spring, the first spring being arranged on the push handle, the first spring being compressed as the push handle is pushed and providing elastic contraction force to tighten the steel wire as the push handle is released; a steel wire fixing and moving member connected to the steel wire and linked to the push handle; A second spring is provided on the steel wire fixing and moving member. The second spring is compressed as the steel wire fixing and moving member pushes and provides an elastic contraction force to tighten the steel wire as the steel wire fixing and moving member retracts.

5. The gastric stone crushing device according to claim 4, characterized in that: The reciprocating drive assembly comprises: a reciprocating structure connected to the steel wire; a motor, the motor being in transmission connection with the reciprocating motion structure, the motor driving the reciprocating motion structure to cause the steel wire to reciprocate while tightly binding the gastric calculus, thereby cutting the gastric calculus; The motor fixing guide box can move and wrap the motor, the reciprocating motion structure, the steel wire fixed moving part and the second spring, and the motor fixing guide box is linked to the push handle.

6. The gastric stone crushing device according to claim 5, characterized in that: The reciprocating motion structure includes a gear and a gear meshing frame, wherein the gear meshing frame is meshed with the gear, and the gear meshing frame is connected to the steel wire. The motor drives the gear to rotate, driving the gear meshing frame to perform reciprocating motion to drive the steel wire to perform reciprocating motion.

7. The gastric stone crushing device according to claim 5, characterized in that: The reciprocating motion structure includes a rotating cam and an oil cylinder, wherein the rotating cam is connected to the oil cylinder, and the oil cylinder is connected to the steel wire. The motor drives the rotating cam to rotate, pushes the oil cylinder to perform reciprocating motion, and drives the steel wire to perform reciprocating motion.

8. The gastric stone crushing device according to claim 5, characterized in that: The reciprocating motion structure includes a swingable gear, wherein the swingable gear is transmission-connected to the motor shaft of the motor, the swingable gear is connected to the steel wire, and the motor shaft drives the swingable gear to swing to drive the steel wire to reciprocate.

9. The gastric stone lithotripsy device according to any one of claims 5 to 8, characterized in that: The gastric stone crushing device also includes: A shell assembly is connected between the head cover and the push handle, and the shell assembly includes a detachable and matching upper shell and lower shell. The motor fixing guide box is wrapped in the shell assembly, and a motor switch key for controlling the start and stop of the motor is provided on the shell assembly.

10. The gastric stone crushing device according to claim 9, characterized in that: A guide rail is formed in the housing assembly, the motor fixing guide box moves on the guide rail, the steel wire fixing member moves with the overall movement of the motor fixing guide box, and the steel wire fixing member reciprocates along the guide rail when the steel wire reciprocates.

11. A method for crushing gastric stones, characterized in that: The gastric stone crushing device according to any one of claims 1 to 10 comprises the following steps: Pushing the pushing assembly to extend the steel wire and introduce it into the location of the gastric stone, so that the steel wire forms a loop to trap the gastric stone; Release the pushing component, and use the elastic contraction force provided by the elastic pressure component to tightly bind the steel wire to the surface of the gastric stone; Starting the reciprocating drive assembly to drive the steel wire tightly bound to the gastric stone to perform reciprocating motion, while the elastic pressure assembly provides elastic contraction force to keep the steel wire tightly bound to the gastric stone, so as to saw the gastric stone into pieces; After the gastric stones are cut into gravel, the reciprocating drive assembly is stopped, and the pushing assembly is operated to retract the steel wire.

12. The gastric stone crushing method according to claim 11, characterized in that: The gastric stone lithotripsy method further comprises the following steps: Remove the head cover of the pushing assembly from the endoscope slot, hold the shell assembly, pull out the wire catheter, support sleeve and wire to complete the lithotripsy operation.

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