Electric gastrolith lithotripter

Abstract

The invention relates to an electric gastrolith lithotripter which can effectively solve the problem of electric rapid lithotripsy during gastrolith treatment and comprises an outer sheath tube, an inner core steel wire, an adjusting support and a handheld motor, the adjusting support comprises an upper supporting table and a lower supporting table, a hollow screw is arranged in the center of the upper supporting table in a sliding mode, and a first self-locking chuck is fixed to the upper end of the hollow screw; the lower supporting table and a shell at the output end of the handheld motor are fixed together, the outer sheath tube and the inner core steel wire are fixed, meanwhile, the inner core steel wire can slide in the outer sheath tube in a limited mode, stretching and retracting of the telescopic rotating body are achieved, and the whole outer sheath tube can smoothly enter a gastroscope hole channel. The stomach stone crushing device is high in crushing efficiency, short in time consumption in the whole process, low in risk, capable of relieving pain of patients to the maximum extent, convenient to use and good in curative effect, and is an innovation of stomach stone crushing devices.

Description

Technical Field

[0001] The device of the present invention is a medical device, in particular an electric lithotripsy for treating gastric stones. Background Art

[0002] Gastrolithiasis is most commonly caused by plant-based stones, resulting from excessive consumption of persimmons, black dates, and hawthorn fruits on an empty stomach. Persimmon stones are the most common cause of gastric stone disease, and are often complicated by gastric ulcers, upper gastrointestinal bleeding, and pyloric obstruction. Traditional treatment for gastric stones involves surgical removal, which has the disadvantages of requiring anesthesia and laparotomy, which carries risks, is prone to postoperative infection, and is associated with a long course of illness, high costs, and patient suffering.

[0003] In recent years, with the development of endoscopic technology, clinical progress has been made in endoscopic lithotripsy and lithotripsy. For example, the more advanced laser lithotripsy is expensive and carries significant risks. Gastric lithiasis is often complicated by gastric ulcers, and the risk of ulcer bleeding and gastric perforation during the blasting process is very high, posing a life-threatening risk to the patient. Another example is endoscopic lithotripsy, which can fragment stones, but the fragmentation is incomplete and the treatment cycle is long. The mechanical lithotripsy devices currently used in domestic hospitals lack sufficient cutting power, especially for hard and large stones. Furthermore, the snare core opening is small, making it difficult to snare larger stones.

[0004] The applicant's prior application for a gastric stone lithotripter with publication number CN203710080U features a snare body at the front end of a steel wire that enters the stomach through a gastroscopic biopsy port. The reset plate is pressed, pushing the sliding body forward until the snare body extends out of the cannula and opens. Under direct gastroscopic vision, the stone is trapped. The second handle is repeatedly engaged until the snare body captures the stone at the front end of the cannula. The second handle is then engaged again, and under the action of tension, the stone is split into two or four halves. The reset plate 9 is then pressed, pushing the snare body out of the cannula. The stone is then snagged again, and the stone is repeatedly cut until it is removable. This structure is relatively complex to operate, requiring high skill from the physician. Furthermore, relatively small stone particles are difficult to crush. Therefore, improvements and innovations are imperative. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an electric lithotripsy for gastric stones, which can effectively solve the problem of electric rapid lithotripsy in the treatment of gastric stones.

[0006] The technical solution solved by the present invention is to include an outer sheath, an inner core steel wire, an adjusting bracket and a handheld motor, the adjusting bracket includes an upper support platform and a lower support platform arranged alternately up and down, the upper support platform and the lower support platform are connected together by connecting bolts, a hollow screw coaxial with the upper support platform is slidingly provided at the center of the upper support platform, a first self-locking chuck is fixed to the upper end of the hollow screw, an upper limit nut is screwed on the hollow screw between the upper support platform and the first self-locking chuck, a lower limit nut is screwed on the hollow screw below the upper support platform, the lower support platform is fixed to the shell of the output end of the handheld motor, and the output shaft of the handheld motor passes through the lower The through hole in the center of the support platform extends upwardly from the upper end surface of the lower support platform, and a second self-locking chuck is screwed on the extended end. The outer sheath tube is a tubular hollow structure, and the inner core steel wire is installed in the outer sheath tube. The upper end of the outer sheath tube is a free end, and the lower end passes through the inner cavity of the first self-locking chuck and the inner cavity of the hollow screw in turn and extends downward to the lower end of the hollow screw, and is pressed and fixed by the first self-locking chuck. The upper end of the inner core steel wire is connected to a telescopic rotating body extending out of the free end portion of the outer sheath tube, and the lower end of the inner core steel wire extends out of the lower end of the outer sheath tube and is pressed and fixed by the second self-locking chuck. The output shaft of the handheld motor rotates, driving the inner core steel wire to rotate, forming a spiral power output structure of the telescopic rotating body.

[0007] The invention has a novel and unique structure, is simple and reasonable, easy to produce, and has low cost. By adjusting the bracket, the outer sheath and the inner core steel wire can be fixed, and at the same time, the inner core steel wire can slide within the outer sheath to limit the extension and retraction of the telescopic rotating body, so that the entire outer sheath can smoothly enter the gastroscope channel. When the handheld motor outputs power, it drives the telescopic rotating body to rotate to crush the gastric stones, and the crushing efficiency is high. The whole process takes a short time and has low risks, which greatly reduces the patient's pain. It is easy to use and has good therapeutic effects. It is an innovation in gastric stone crushing devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the present invention.

[0009] Figure 2 It is a structural schematic diagram of the handheld motor of the present invention.

[0010] Figure 3 This is a cross-sectional view of the free end of the outer sheath tube of the present invention (with the telescopic rotating body retracted).

[0011] Figure 4 This is a cross-sectional view of the free end of the outer sheath tube of the present invention (the telescopic rotating body extends out of the outer sheath tube). DETAILED DESCRIPTION

[0012] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0013] Depend on Figure 1-4The present invention includes an outer sheath 4, an inner core steel wire 5, an adjusting bracket and a handheld motor 13, the adjusting bracket includes an upper support platform 11 and a lower support platform 2 arranged alternately above and below, the upper support platform 11 and the lower support platform 2 are connected together by a connecting bolt 3, a hollow screw 8 coaxial with the upper support platform 11 is slidingly provided at the center of the upper support platform 11, a first self-locking chuck 7 is fixed to the upper end of the hollow screw 8, an upper limit nut 12a is screwed on the hollow screw 8 between the upper support platform 11 and the first self-locking chuck 7, a lower limit nut 12b is screwed on the hollow screw 8 below the upper support platform 11, the lower support platform 2 is fixed to the shell of the output end of the handheld motor 13, the handheld motor 13 The output shaft 13d passes through the through hole in the center of the lower support platform and extends upward from the upper end surface of the lower support platform. The extended end is screwed with a second self-locking chuck 14. The outer sheath tube 4 is a tubular hollow structure. The inner core steel wire 5 is installed in the outer sheath tube 4. The upper end of the outer sheath tube 4 is a free end, and the lower end passes through the inner cavity of the first self-locking chuck 7 and the inner cavity of the hollow screw 8 in turn and extends downward from the lower end of the hollow screw, which is pressed and fixed by the first self-locking chuck 7. The upper end of the inner core steel wire 5 is connected to the telescopic rotating body 6 that extends out of the free end portion of the outer sheath tube, and the lower end of the inner core steel wire 5 extends out of the lower end of the outer sheath tube and is pressed and fixed by the second self-locking chuck 14. The output shaft of the handheld motor rotates, driving the inner core steel wire to rotate, forming a spiral power output structure of the telescopic rotating body 6.

[0014] To ensure the use effect, the upper end of the connecting bolt 3 is connected to the upper support platform 11 and is tightened and fixed by the upper clamping bolt 9a, and the lower end of the connecting bolt 3 is connected to the lower support platform 2 and is tightened and fixed by the lower clamping bolt 9b.

[0015] To ensure the use effect, the through hole in the center of the lower support platform 2 is a threaded hole, and the shell of the output end of the handheld motor 13 is provided with an external threaded sleeve 13c corresponding to the threaded hole, and the external threaded sleeve 13c is rotatably fixed in the center hole of the lower support platform 2.

[0016] To ensure the use effect, a locking bolt 10 is screwed on the side wall of the upper support platform 11 for tightening and fixing the hollow screw 8. The hollow screw is installed in the through hole in the center of the upper support platform 11. The hollow screw can slide up and down along the through hole. After sliding into place, it is tightened by the locking bolt to limit its position.

[0017] To ensure the use effect, the handheld motor 13 is provided with a switch 13a for starting or adjusting the speed of its output shaft.

[0018] To ensure the use effect, the power cord of the handheld motor 13 is connected to the power supply through a foot switch (not shown in the figure). This foot switch can free the doctor's hands and facilitate endoscopic lithotripsy operations.

[0019] To ensure the use effect, the telescopic rotating body 6 includes a symmetrically arranged left rotating body and a right rotating body. The left rotating body includes a left elastic steel wire 63 extending to the left and outward, the lower end of the left elastic steel wire 63 is fixedly connected to the upper end of the inner core steel wire 5, and the upper end of the left elastic steel wire 63 is connected to the left crushing ring 64. The right rotating body includes a right elastic steel wire 61 extending to the right and outward, the lower end of the right elastic steel wire 61 is fixedly connected to the upper end of the inner core steel wire 5, and the upper end of the right elastic steel wire 61 is connected to the right crushing ring 62; the left crushing ring 64 and the right crushing ring 62 can be either solid or hollow, and the left crushing ring 64 and the right crushing ring 62 are staggered in the thickness direction. In this way, when the inner core steel wire 5 slides relatively toward the inner cavity of the outer sheath tube, it drives the left elastic steel wire 63 and the right elastic steel wire 61 to move toward the inner cavity of the outer sheath tube 4, and the left crushing ring 64 and the right crushing ring 62 are staggered and stacked up and down, and can be located as a whole within the diameter range of the inner cavity of the outer sheath tube. In this way, the outer sheath tube can move normally along the gastroscopic cavity. Under the field of view of the gastroscope, after reaching the stone position, the inner core steel wire 5 moves relatively outward, driving the left elastic steel wire 63 and the right elastic steel wire 61 to extend to the outside of the outer sheath tube 4. Under the action of elasticity, the left crushing ring 64 and the right crushing ring 62 open to the left and right, and the output shaft of the handheld motor rotates to drive the left crushing ring 64 and the right crushing ring 62 to rotate, thereby breaking the gastric stone.

[0020] The outer sheath is made of a stainless steel hose, and the left elastic steel wire 63 and the right elastic steel wire 61 are made of elastic material and can be reset after the external force is removed.

[0021] The first self-locking chuck 7 and the second self-locking chuck 14 are existing technologies, such as universal chucks, reducing chucks or three-jaw mini chucks for electric drills, specifically Bosch's Drummel 4486 electric grinder special universal chuck, self-tightening and self-locking APU16 high-precision integrated drill chuck, etc., which can clamp the outer sheath or inner core steel wire installed inside by rotation.

[0022] The outer diameter of the outer sheath tube 4 is smaller than the inner diameter of the gastroscope channel, which facilitates insertion for treatment.

[0023] When the present invention is used, upper and lower limit nuts are screwed on the upper and lower hollow screws of the upper support platform 11. In fact, the upper and lower limit nuts are the distances for the hollow screws to slide up and down. When the hollow screw moves upward, it drives the outer sheath tube to slide upward, and the left elastic steel wire 63 and the right elastic steel wire 61 move toward the inner cavity of the outer sheath tube 4. Since they are tilted outward and the tilt distance exceeds the outer diameter of the outer sheath tube, they will shrink inward during the movement, so that the left crushing ring 64 and the right crushing ring 62 are located within the diameter range of the inner cavity of the outer sheath tube (such as Figure 3As shown), lock the locking bolt. At this time, the outer sheath can be passed through the gastroscopic biopsy channel into the stomach. The gastric stone is found under direct vision of the gastroscope, the locking bolt is loosened, and the hollow screw is moved downward to drive the left elastic steel wire 63 and the right elastic steel wire 61 to extend to the outside of the outer sheath 4. Under the elastic action, the left crushing ring 64 and the right crushing ring 62 are opened to the left and right. The opening amplitude is controlled according to the size of the gastric stone, and then the locking bolt is locked, and the handheld motor is started to drive the left crushing ring 64 and the right crushing ring 62 to rotate to break the gastric stone. The crushing efficiency is high, the whole process takes a short time, and the risk is low. It reduces the patient's pain to the greatest extent, is easy to use, and has good therapeutic effect. It is an innovation in the gastric stone crushing device with good social and economic benefits.

Claims

1. A gastric stone electric lithotripsy, characterized in that: The gastric stone electric lithotripter comprises an outer sheath (4), an inner core steel wire (5), an adjustment bracket and a handheld motor (13), wherein the adjustment bracket comprises an upper support platform (11) and a lower support platform (2) arranged alternately above and below, the upper support platform (11) and the lower support platform (2) are connected together by a connecting bolt (3), a hollow screw (8) coaxial with the upper support platform (11) is slidingly provided at the center of the upper support platform (11), a first self-locking chuck (7) is fixed at the upper end of the hollow screw (8), an upper limit nut (12a) is screwed on the hollow screw (8) between the upper support platform (11) and the first self-locking chuck (7), a lower limit nut (12b) is screwed on the hollow screw (8) below the upper support platform (11), and the lower support platform (2) is fixed to the housing of the output end of the handheld motor (13) The output shaft (13d) of the handheld motor (13) passes through the through hole in the center of the lower support platform and extends upward from the upper end surface of the lower support platform. The extended end is screwed with a second self-locking chuck (14). The outer sheath tube (4) is a tubular hollow structure. The inner core steel wire (5) is installed in the outer sheath tube (4). The upper end of the outer sheath tube (4) is a free end. The lower end passes through the inner cavity of the first self-locking chuck (7) and the inner cavity of the hollow screw (8) in turn and extends downward to the lower end of the hollow screw. It is pressed and fixed by the first self-locking chuck (7). The upper end of the inner core steel wire (5) is connected to a telescopic rotating body (6) extending from the free end portion of the outer sheath tube. The lower end of the inner core steel wire (5) extends from the lower end of the outer sheath tube and is pressed and fixed by the second self-locking chuck (14). The output shaft of the handheld motor rotates, driving the inner core steel wire to rotate, thereby forming a spiral power output structure of the telescopic rotating body (6).

2. The electric lithotripsy for gastric stones according to claim 1, characterized in that: The upper end of the connecting bolt (3) is connected to the upper support platform (11) and is tightened and fixed by the upper clamping bolt (9a); the lower end of the connecting bolt (3) is connected to the lower support platform (2) and is tightened and fixed by the lower clamping bolt (9b).

3. The electric lithotripsy for gastric stones according to claim 1, characterized in that: The through hole in the center of the lower support platform (2) is a threaded hole, and an external threaded sleeve (13c) corresponding to the threaded hole is provided on the housing of the output end of the handheld motor (13), and the external threaded sleeve (13c) is rotatably fixed in the center hole of the lower support platform (2).

4. The electric lithotripsy for gastric stones according to claim 1, characterized in that: A locking bolt (10) for pressing and fixing the hollow screw rod (8) is screwed onto the side wall of the upper support platform (11).

5. The electric lithotripsy for gastric stones according to claim 1, characterized in that: The handheld motor (13) is provided with a switch (13a) for starting or adjusting the rotation speed of its output shaft.

6. The electric lithotripsy for gastric stones according to claim 1, characterized in that: The power line of the handheld motor (13) is connected to the power source via a foot switch.

7. The electric lithotripsy for gastric stones according to claim 1, characterized in that: The telescopic rotating body (6) comprises a left rotating body and a right rotating body which are symmetrically arranged. The left rotating body comprises a left elastic steel wire (63) which extends outwards to the left, the lower end of the left elastic steel wire (63) is fixedly connected to the upper end of the inner core steel wire (5), and the upper end of the left elastic steel wire (63) is connected to a left crushing ring (64). The right rotating body comprises a right elastic steel wire (61) which extends outwards to the right, the lower end of the right elastic steel wire (61) is fixedly connected to the upper end of the inner core steel wire (5), and the upper end of the right elastic steel wire (61) is connected to a right crushing ring (62).

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