Calculus flushing device

Abstract

The invention provides a calculus flushing device, and relates to the technical field of urinary calculus flushing. Comprising an outer pipe and an inner pipe, the inner pipe is installed in the center of the inner side of the outer pipe, the expansion device further comprises an expansion assembly, the expansion assembly comprises a movable ring arranged on the outer side of the end of the outer pipe in a sleeving mode, and an elastic ring sleeve is arranged on the side, close to an opening in the end of the outer pipe, of the movable ring; by means of the expansion assembly and the connecting assembly, a pipe cavity with a large opening can be formed in the flushing position in the flushing process, so that stones can conveniently enter the pipe cavity, the suction efficiency of broken stones in the body of a patient is effectively improved, and by means of the arranged switching assembly, in the flushing fluid flowing process, the broken stones in the body of the patient can be effectively sucked. The flushing position can be continuously changed, so that the calculus flushing efficiency is improved, meanwhile, the moving frequency of the flushing pipeline in the body of a patient can be reduced, and damage to the patient in the pipeline moving process is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of urinary stone flushing, in particular to a stone flushing device. Background Art

[0002] Urinary stones are a common disease of the urinary system. Stones can be found in any part of the kidney, bladder, ureter and urethra. However, kidney and ureteral stones are the most common. The clinical manifestations vary depending on the location of the stones. The typical manifestations of kidney and ureteral stones are renal colic and hematuria. Before the colic is caused by the stones, the patient does not feel anything. Due to some inducement, such as strenuous exercise, labor, long-distance driving, etc., severe colic suddenly occurs on one side of the waist, and radiates to the lower abdomen and perineum, accompanied by abdominal distension, nausea, vomiting, and varying degrees of hematuria; the main manifestations of bladder stones are difficulty urinating and painful urination.

[0003] After breaking up the larger stones in the patient's body through external means such as laser and ultrasound, it is necessary to flush out the broken small stones inside by injecting flushing fluid into the stone organ. The process is roughly to inject flushing fluid into the organ through a pipe, and set up another pipe to suck the flushing fluid. As the flushing fluid circulates, the stones in the patient's body are continuously taken out. In order to reduce the damage caused by the operation to the patient, the microporous lithotripsy method is currently widely used. Due to the size of the surgical incision, the diameter of the tube that can be inserted into the patient's body for flushing and suction is mostly small. In the process of sucking out the stones in the patient's body, it is difficult to collect and remove the stones more efficiently. At the same time, during the flushing process, flushing the same position for a long time not only causes greater damage, but also has lower flushing efficiency. In order to improve the flushing efficiency, the flushing pipe needs to be continuously pumped to increase the flushing area. During the pumping of the pipe, the friction between the pipe and the organ will also cause unexpected damage to the organ.

[0004] In summary, the present invention provides a stone flushing device to solve the above problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a stone flushing device, which is achieved by the following specific technical means:

[0006] A stone flushing device, comprising an outer tube and an inner tube, wherein the inner tube is installed at the center of the inner side of the outer tube, and further comprising:

[0007] An expansion assembly, the expansion assembly comprising a movable ring sleeved on the outer side of the end of the outer tube, an elastic ring sleeve being arranged on a side of the movable ring close to the opening of the end of the outer tube, and an end of the elastic ring sleeve extending from the end of the outer tube;

[0008] A flushing assembly, the flushing assembly includes a movable tube sleeved outside the inner tube, a closing assembly is installed inside the movable tube, one end of the movable tube is connected to a flushing head, and the end of the flushing head passes through the end of the elastic ring sleeve away from the movable ring, and a switching assembly is arranged inside the flushing head;

[0009] A connecting assembly, the number of the connecting assemblies is multiple and they are distributed in a circumferential array. The connecting assembly includes a notch, a limiting post and a movable rod. The notch is opened at the end of the outer tube, the limiting post is arranged inside the notch, the movable rod is installed in the notch, a through straight groove is arranged on the surface of the movable rod, and the limiting post passes through the inside of the straight groove. One end of the movable rod is rotatably connected to the outer surface of the movable tube through a connecting piece, and the other end of the movable rod is fixedly connected to the inner side of the elastic ring sleeve.

[0010] Further, the closing assembly includes a partition board, a sealing plate, a connecting rod, a connecting ring and a guide groove. The partition board is arranged inside the movable tube. The sealing plate is rotatably installed inside the movable tube and is located between the end of the inner tube and the partition board and close to the partition board. The connecting ring is installed inside the inner tube. The connecting rod is arranged between the connecting ring and the sealing plate and is fixedly connected to the sealing plate and the connecting ring at both ends respectively. The number of the guide grooves is multiple. A plurality of guide blocks are uniformly arranged on the outer surface of the connecting ring, and the plurality of guide blocks respectively penetrate into the plurality of guide grooves.

[0011] Further, one end of the guide groove away from the end of the inner tube is parallel to the axis of the inner tube, and one end of the guide groove close to the end of the inner tube is obliquely arranged on the inner wall of the inner tube.

[0012] Further, a plurality of through slots are uniformly opened on the partition board. The sealing plate includes an outer ring and an inner fixing block arranged at the center inside the outer ring, and a plurality of sealing blocks are uniformly arranged between the outer ring and the inner fixing block. The shape and size of the sealing block are larger than the shape and size of the through slot.

[0013] Further, the switching assembly includes a flow groove arranged inside the flushing head and communicated with the inside of the movable tube. The flushing head is provided with a flushing groove communicated with the flow groove at the end away from the movable tube. Two groups of through flushing holes at different angles are arranged in the middle of the inner wall of the flushing groove. A switching ring plate is also installed inside the flushing groove. A group of through holes are opened in the middle of the switching ring plate. The number of a group of the through holes is equal to the number of a group of the flushing holes and the positions correspond one by one, and the opening size of one end of the through hole on the inner wall of the flushing groove is equal to the size of the through hole.

[0014] Further, the switching component further includes a central column, a limiting groove, a connecting sleeve, and a driving component. The limiting groove is arranged in the middle of the inner wall of the flushing groove away from the movable tube. The central column is arranged in the middle of the switching ring plate and one end thereof penetrates into the limiting groove. The central column is slidably connected with the limiting groove. A plurality of spokes are arranged in an array on the outer side of the central column, and the other ends of the spokes are fixedly connected to the inner surface of the switching ring plate. The connecting sleeve is rotatably installed at one end of the central column away from the limiting groove, and the connecting sleeve penetrates into the flow groove.

[0015] Further, the driving component includes a driving rotating shaft, a driving groove, and a driving column. The driving groove is in a circular wave shape and is arranged on the inner wall of the flow groove. The driving rotating shaft is installed in the flow groove and is located between the partition plate and the connecting sleeve. One end of the driving rotating shaft is rotatably connected with the partition plate. A connecting column is arranged at the end of the driving rotating shaft away from the partition plate, and the connecting column penetrates into the connecting sleeve. A plurality of spiral blades are evenly arranged on the surface of the driving column. The driving column is arranged on the outer surface of the connecting sleeve, and one end of the driving column away from the connecting sleeve penetrates into the driving groove.

[0016] Further, the driving rotating shaft has a variable diameter structure, and the radius gradually decreases from the end close to the connecting sleeve to the end close to the partition plate.

[0017] Further, a sliding groove is arranged on the inner wall of the connecting sleeve, and a sliding block is arranged on the surface of the connecting column. The sliding block penetrates into the sliding groove, and the sliding block is slidably connected with the sliding groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By arranging the expansion component in the present invention, after the flushing liquid enters the inner tube, its pressure acts on the movable tube. Since the sealing block corresponds to the through groove on the partition plate, at this time, the flushing liquid entering the movable tube will push the movable tube to move. The movable tube drives one end of the movable rod close to it to move, so that one end of the movable rod close to the movable tube approaches the limiting column. At this time, the movable rod will slide on the surface of the limiting column along the direction of the straight groove. And as the movable rod moves, the included angle between it and the axis of the outer tube will change, and the distance that the end away from the inner tube extends out from the outside of the outer tube will also change. The elastic ring sleeve is expanded from different directions by the movable rod, so that the elastic ring sleeve changes from a cylindrical shape to a trumpet shape, so as to expand the opening size of the amplifier, which is beneficial to the calculus to enter the inner side of the outer tube, and effectively improves the suction efficiency of the calculus in the cavity.

[0020] 2. By providing a driving component, a flushing component, and a switching component, when the flushing liquid flows around the driving shaft in the flow groove, a lateral thrust will be generated on the spiral blades on the surface of the driving shaft, thereby causing the driving shaft to rotate. During the rotation of the driving shaft, under the action of the sliding groove and the slider, the connecting sleeve rotates synchronously with the driving shaft. During the rotation of the connecting sleeve, the driving column provided on its outer side moves in the driving groove. The driving groove arranged in a wavy shape causes the driving column to continuously cycle between approaching and moving away from the driving shaft during rotation, thereby achieving the effect of driving the central column to continuously reciprocate by the connecting sleeve. During the movement of the central column, it will continuously drive the switching ring plate to move. During the reciprocating movement of the switching ring plate, the through holes on the switching ring plate will be respectively aligned with different groups of flushing holes on the inner wall of the flushing groove. The flushing liquid enters the flushing groove from the flow groove and flows out from the through holes and flushing holes in sequence. By changing the flushing position through the flushing holes arranged at different angles, the flushing efficiency of the calculus can be improved, and at the same time, the frequency of the movement of the flushing pipe in the patient's body can be reduced, thereby reducing the damage caused to the patient during the movement of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 is a three-dimensional schematic diagram of the present invention during operation;

[0023] Figure 3 is a schematic plan sectional view of the present invention;

[0024] Figure 4 is a three-dimensional schematic diagram of the outer tube in the present invention;

[0025] Figure 5 is a partial schematic diagram of the expansion component and the flushing component in the present invention;

[0026] Figure 6 is a three-dimensional sectional view of the inner tube in the present invention;

[0027] Figure 7 is a partial schematic diagram of the sealing component in the present invention;

[0028] Figure 8 is a three-dimensional sectional view of the flushing head in the present invention;

[0029] Figure 9 is a partial schematic diagram of the driving component and the switching component in the present invention.

[0030] In the figure:

[0031] 1. Outer tube; 2. Inner tube; 3. Expansion assembly; 301. Movable ring; 302. Elastic ring sleeve; 4. Flushing assembly; 401. Movable tube; 402. Flushing head; 5. Sealing assembly; 501. Partition board; 5011. Through groove; 502. Sealing plate; 5021. Outer ring; 5022. Inner fixing block; 5023. Sealing block; 503. Connecting rod; 504. Connecting ring; 505. Guide groove; 506. Guide block; 6. Connecting assembly; 601. Notch; 602. Limit post; 603. Movable rod; 604. Straight groove; 7. Switching assembly; 701. Flow groove; 702. Flushing groove; 703. Flushing hole; 704. Switching ring plate; 705. Through hole; 706. Central column; 707. Limit groove; 708. Connecting sleeve; 709. Spoke; 8. Driving assembly; 801. Driving rotating shaft; 8011. Spiral blade; 802. Driving groove; 803. Driving column; 804. Connecting column; 805. Sliding groove; 806. Slider. Detailed implementation manners

[0032] The following further describes in detail the implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0033] As Figure 1 As shown in FIGS. -9, the present invention provides a calculus flushing device, including an outer tube 1 and an inner tube 2. The inner tube 2 allows the flushing liquid to enter the patient's body, and the outer tube 1 is used to extract the flushing liquid containing calculus from the patient's body to complete the circulation of the flushing liquid. During the flow of the flushing liquid, the calculus in the patient's body is taken out. The inner tube 2 is installed at the center inside the outer tube 1. It should be noted that the inner tube 2 and the outer tube 1 need to be respectively connected to the flushing liquid supply device and the suction device through pipelines, and further include:

[0034] An expansion assembly 3, the expansion assembly 3 includes a movable ring 301 sleeved outside the end of the outer tube 1. One side of the movable ring 301 close to the opening of the end of the outer tube 1 is provided with an elastic ring sleeve 302. The elastic ring sleeve 302 is made of a composite material such as latex and has good tensile performance and resilience performance. The elastic ring sleeve 302 can be externally expanded through the connecting assembly 6 to achieve the effect of increasing the size of the opening at the end of the outer tube 1, facilitating more efficient extraction of the calculus in the patient's body during negative pressure suction, and the end of the elastic ring sleeve 302 extends out from the end of the outer tube 1;

[0035] A flushing assembly 4, the flushing assembly 4 comprises a movable tube 401 sleeved on the outer side of the inner tube 2, the movable tube 401 can move on the outer side of the inner tube 2, a closing assembly 5 is installed inside the movable tube 401, one end of the movable tube 401 is connected to a flushing head 402, and the end of the flushing head 402 passes through the end of the elastic ring sleeve 302 away from the movable ring 301, and a switching assembly 7 is arranged on the inner side of the flushing head 402, and the flushing direction is changed by the switching assembly 7, thereby reducing the probability of the stone flushing efficiency being reduced due to long-term flushing of a fixed position. In addition, by setting the switching assembly 7, the frequency of movement of the flushing head 402 in the patient's body can be reduced, thereby reducing damage to the patient's body;

[0036] The connecting assembly 6 has a plurality of connecting assemblies 6 and is distributed in a circumferential array. The connecting assembly 6 is used to complete the linkage between the movable tube 401 and the elastic ring sleeve 302. The connecting assembly 6 includes a notch 601, a limiting column 602 and a movable rod. The notch 601 is opened at the end of the outer tube 1, the limiting column 602 is arranged on the inner side of the notch 601, and the movable rod 603 is installed in the notch 601. The surface of the movable rod 603 is provided with a through straight groove 604, and the limiting column 602 passes through the inner side of the straight groove 604. One end of the movable rod 603 is connected to the outer surface of the movable tube 401 through a connecting rod. The connecting piece is rotatably connected, and the other end of the movable rod 603 is fixedly connected to the inner side of the elastic ring sleeve 302. During the movement of the movable tube 401, the relative position and distance between the end of the movable tube 401 and the connecting column 804 change, thereby changing the angle of the movable rod 603 and the distance that the movable rod 603 extends from the outside of the outer tube 1. By setting up multiple movable rods 603, the elastic ring sleeve 302 is stretched in different directions on the inner side, so that the elastic ring sleeve 302 changes from a cylindrical shape to a trumpet shape, thereby achieving the purpose of increasing the size of the suction opening and increasing the stone suction efficiency.

[0037] As an embodiment of the present invention, the closing component 5 includes a partition plate 501, a closing plate 502, a connecting rod 503, a connecting ring 504, and a guide groove 505. The partition plate 501 is disposed inside the movable tube 401. The closing plate 502 is rotatably installed inside the movable tube 401 and is located between the end of the inner tube 2 and the partition plate 501 and close to the partition plate 501. The surface of the closing plate 502 is in contact with the partition plate 501. The connecting ring 504 is installed inside the inner tube 2. The connecting rod 503 is disposed between the connecting ring 504 and the closing plate 502, and both ends are fixedly connected to the closing plate 502 and the connecting ring 504 respectively. There are multiple guide grooves 505. A plurality of guide blocks 506 are evenly arranged on the outer surface of the connecting ring 504, and the plurality of guide blocks 506 are respectively inserted into the plurality of guide grooves 505. After the flushing liquid enters the inside of the movable tube 401, under the action of pressure, it will cause the movable tube 401 to move outside the inner tube 2. During the movement of the movable tube 401, the guide blocks 506 on the outside of the connecting ring 504 will move synchronously with the movable tube 401. Since the guide blocks 506 are located inside the guide grooves 505, the movement trajectory of the guide blocks 506 is the same as the set trajectory of the guide grooves 505.

[0038] As an embodiment of the present invention, one end of the guide groove 505 away from the end of the inner tube 2 is parallel to the axis of the inner tube 2, and one end of the guide groove 505 close to the end of the inner tube 2 is obliquely arranged on the inner wall of the inner tube 2. In the initial state, the guide block 506 is located in the part of the guide groove 505 parallel to the axis of the inner tube 2. When the flushing liquid enters the movable tube 401 and the pressure does not reach the threshold value, the guide block 506 will move along the part of the guide groove 505 parallel to the axis of the inner tube 2. When the guide block 506 moves to the inclined part of the guide groove 505, the guide block 506 will cause the connecting ring 504, the connecting rod 503, and the closing plate 502 to rotate during the movement in the guide groove 505.

[0039] As an embodiment of the present invention, a plurality of through grooves 5011 are evenly formed on the partition plate 501, and the sealing plate 502 includes an outer ring 5021 and an inner fixed block 5022 arranged at the inner center of the outer ring 5021, and a plurality of sealing blocks 5023 are evenly arranged between the outer ring 5021 and the inner fixed block 5022, and the shape and size of the sealing blocks 5023 are larger than the shape and size of the through grooves 5011. In the initial state, the positions of the sealing blocks 5023 and the through grooves 5011 coincide with each other, and at this time, the movable tube 401 is a relatively closed cavity, and when the flushing liquid enters, it will push the movable tube 401 to move. The movable tube 401 moves on the outside of the inner tube 2. When the pressure of the flushing liquid in the movable tube 401 reaches a threshold, the guide block 506 enters the inclined part of the guide groove 505, which will cause the sealing plate 502 to rotate, so that the sealing block 5023 is gradually offset from the through groove 5011. At this time, the flushing liquid can pass through the partition 501 into the flushing head 402, which effectively improves the stability of the flushing liquid pressure in the initial stage of flushing. At the same time, during the flushing process, the sealing plate 502 will be restored, which will cause the cross-section of the through groove 5011 to become smaller. Therefore, the sealing plate 502 can be prevented from rotating under the pressure of the flushing liquid.

[0040] As an embodiment of the present invention, the switching component 7 includes a flow groove 701 arranged inside the flushing head 402 and connected to the inner side of the movable tube 401. The flushing head 402 is provided with a flushing groove 702 connected to the flow groove 701 at one end of the flow groove 701 away from the movable tube 401. Two groups of through flushing holes 703 at different angles are arranged in the middle of the inner wall of the flushing groove 702. The two groups of flushing holes 703 are located close to the openings on the inner wall of the flushing groove 702. A switching ring plate 704 is also installed on the inner side of the flushing groove 702. The length of the switching ring plate 704 is less than the length of the flushing groove 702, and the outer wall of the switching ring plate 704 is in contact with the inner wall of the flushing groove 702, so the switching ring plate 704 can Axial movement is performed on the inner side of the flushing groove 702, and a group of through holes 705 is opened in the middle of the switching ring plate 704. The number of through holes in a group 705 is equal to the number of flushing holes in a group 703, and the positions correspond one to one. The opening size of the through hole 705 at one end of the inner wall of the flushing groove 702 is equal to the size of the through hole 705. The position of the through hole 705 will be continuously aligned with the flushing holes 703 in different groups during the movement of the switching ring plate 704, so as to achieve the effect of discharging the flushing liquid from different groups of flushing holes 703 in different directions, realize the switching of the flushing position, and achieve the purpose of improving the flushing efficiency and reducing the frequency of position change of the flushing head 402 by continuously changing the flushing position.

[0041] As an implementation manner of the present invention, the switching component 7 further includes a central column 706, a limiting groove 707, a connecting sleeve 708, and a driving component 8. The limiting groove 707 is arranged in the middle of the inner wall of the flushing groove 702 on the side away from the movable pipe 401. The central column 706 is arranged in the middle of the switching ring plate 704 and one end thereof penetrates into the limiting groove 707. The limiting groove 707 and the central column 706 are slidably connected to limit the rotation of the central column 706 and the switching ring plate 704. A plurality of spokes 709 are arranged in an array on the outer side of the central column 706. The positions of the spokes 709 are offset from the positions of the through holes 705, so as to prevent the spokes 709 from blocking the through holes 705. Through the spokes 709, the central column 706 and the switching ring plate 704 can form an integral body, and the other ends of the spokes 709 are fixedly connected to the inner surface of the switching ring plate 704. The connecting sleeve 708 is rotatably installed at one end of the central column 706 away from the limiting groove 707, and the connecting sleeve 708 penetrates into the flow groove 701.

[0042] As an implementation manner of the present invention, the driving component 8 includes a driving rotating shaft 801, a driving groove 802, and a driving column 803. The driving groove 802 is in a ring-shaped wavy pattern and is arranged on the inner wall of the flow groove 701. The driving rotating shaft 801 is installed in the flow groove 701 and is located between the partition plate 501 and the connecting sleeve 708. One end of the driving rotating shaft 801 is rotatably connected to the partition plate 501. A connecting column 804 is arranged at the end of the driving rotating shaft 801 away from the partition plate 501, and the connecting column 804 penetrates into the connecting sleeve 708. A plurality of spiral blades 8011 are uniformly arranged on the surface of the driving column 803. When the flushing liquid passes around the driving rotating shaft 801, the pressure acts on the spiral blades 8011, generating a lateral thrust on the spiral blades 8011, thereby promoting the rotation of the driving rotating shaft 801. The driving column 803 is arranged on the outer surface of the connecting sleeve 708, and the end of the driving column 803 away from the connecting sleeve 708 penetrates into the driving groove 802. During the rotation of the connecting sleeve 708, the driving column 803 moves in the driving groove 802 and moves left and right along with the wavy driving groove 802, so as to drive the central column 706 to reciprocate through the connecting sleeve 708, and the switching ring plate 704 completes the switching of different flushing states.

[0043] As an implementation manner of the present invention, the driving rotating shaft 801 has a variable diameter structure, and the radius gradually decreases from the end close to the connecting sleeve 708 to the end close to the partition plate 501. Through this setting, when the flushing liquid passes through the flow groove 701, its pressure gradually increases, so as to increase the lateral thrust generated on the spiral blades 8011, and thus make the driving rotating shaft 801 rotate better.

[0044] As an implementation manner of the present invention, a sliding groove 805 is provided on the inner wall of the connecting sleeve 708, a sliding block 806 is provided on the surface of the connecting column 804, the sliding block 806 penetrates into the sliding groove 805, and the sliding block 806 is slidably connected to the sliding groove 805. Through the setting of the sliding block 806 and the sliding groove 805, the connecting sleeve 708 can rotate synchronously with the driving rotating shaft 801.

[0045] Embodiment 1

[0046] As shown in Figure 1 -9, in this embodiment, the usage method of the expansion assembly 3 is as follows: When flushing the stones in the patient's body, first insert the flushing assembly 4 and the expansion assembly 3 in the present invention into the organ where the patient needs to remove the stones through the surgical wound. Then, inject the flushing liquid with sufficient pressure into the inner tube 2 through an external liquid supply device. After the flushing liquid enters the inner tube 2, its pressure acts on the movable tube 401. Since the sealing block 5023 corresponds to the through groove 5011 on the partition plate 501, at this time, the flushing liquid entering the movable tube 401 will push the movable tube 401 to move. The movable tube 401 drives the end of the movable rod 603 close to it to move, so that the end of the movable rod 603 close to the movable tube 401 approaches the limit post 602. At this time, the movable rod 603 will slide on the surface of the limit post 602 along the direction of the straight groove 604. And as the movable rod 603 moves, the angle between it and the axis of the outer tube 1 will change, and the distance that its end far from the inner tube 2 extends out of the outer side of the outer tube 1 will also change. The elastic ring sleeve 302 is expanded from different directions by the movable rod 603, so that the elastic ring sleeve 302 changes from a cylindrical shape to a trumpet shape, so as to achieve the purpose of enlarging the opening size of the expander, which is beneficial for the stones to enter the inner side of the outer tube 1, and effectively improves the suction efficiency of the intracavitary stones.

[0047] Embodiment 2

[0048] As shown in Figure 1As shown in FIGS. -9, after the expansion component 3 in the present invention is fully deployed, at this time, after the guide block 506 moves from the part parallel to the axis of the inner tube 2 in the guide groove 505 to the inclined part, the sealing block 5023 rotates to a position offset from the through groove 5011. At this time, the flushing liquid can enter the flow groove 701 from the inner side of the through groove 5011. When the flushing liquid flows around the driving rotating shaft 801 in the flow groove 701, it will generate a lateral thrust on the driving rotating shaft 801 on the surface of the driving rotating shaft 801, thereby promoting the driving rotating shaft 801 to rotate. During the rotation of the driving rotating shaft 801, under the action of the sliding groove 805 and the sliding block 806, the connecting sleeve 708 rotates synchronously with the driving rotating shaft 801. During the rotation of the connecting sleeve 708, the driving column 803 provided on its outer side moves in the driving groove 802. The wave-shaped driving groove 802 causes the driving column 803 to continuously repeat moving closer to and away from the driving rotating shaft 801 during rotation, thereby achieving the effect of driving the central column 706 to move reciprocally by the connecting sleeve 708. During the movement of the central column 706, it will continuously drive the switching ring plate 704 to move. During the reciprocating movement of the switching ring plate 704, the through holes 705 on the switching ring plate 704 will be aligned with different groups of flushing holes 703 on the inner wall of the flushing groove 702 respectively. The flushing liquid enters the flushing groove 702 from the flow groove 701 and flows out from the through holes 705 and the flushing holes 703 in sequence. By changing the flushing position through the flushing holes 703 arranged at different angles, the flushing efficiency of the calculus can be improved, and at the same time, the frequency of the movement of the flushing pipeline in the patient's body can be reduced, thereby reducing the damage to the patient during the movement of the pipeline.

[0049] The embodiments of the present invention are given for the purposes of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A stone flushing device, comprising an outer tube (1) and an inner tube (2), wherein the inner tube (2) is installed at the center of the inner side of the outer tube (1), characterized in that: Also includes: An expansion assembly (3), the expansion assembly (3) comprising a movable ring (301) sleeved on the outside of the end of the outer tube (1), an elastic ring sleeve (302) being provided on a side of the movable ring (301) close to the opening of the end of the outer tube (1), and an end of the elastic ring sleeve (302) extending from the end of the outer tube (1); A flushing assembly (4), the flushing assembly (4) comprising a movable tube (401) sleeved on the outside of the inner tube (2), a sealing assembly (5) being installed inside the movable tube (401), one end of the movable tube (401) being connected to a flushing head (402), and an end of the flushing head (402) passing through an end of the elastic ring sleeve (302) away from the movable ring (301), and a switching assembly (7) being arranged inside the flushing head (402); A connecting component (6), wherein the connecting components (6) are in plurality and are distributed in a circular array, the connecting component (6) comprising a notch (601), a limiting column (602) and a movable rod (603), wherein the notch (601) is provided at the end of the outer tube (1), the limiting column (602) is arranged on the inner side of the notch (601), the movable rod (603) is installed in the notch (601), a straight groove (604) is arranged on the surface of the movable rod (603), and the limiting column (602) passes through the inner side of the straight groove (604), one end of the movable rod (603) is rotatably connected to the outer surface of the movable tube (401) via a connecting piece, and the other end of the movable rod (603) is fixedly connected to the inner side of the elastic ring sleeve (302).

2. The stone flushing device according to claim 1, characterized in that: The sealing component (5) comprises a partition (501), a sealing plate (502), a connecting rod (503), a connecting ring (504), and a guide groove (505); the partition (501) is arranged on the inner side of the movable tube (401); the sealing plate (502) is rotatably mounted inside the movable tube (401) and is located between the end of the inner tube (2) and the partition (501) and close to the partition (501); the connecting ring (504) is mounted on the inner side of the inner tube (2); the connecting rod (503) is arranged between the connecting ring (504) and the sealing plate (502), and both ends are fixedly connected to the sealing plate (502) and the connecting ring (504), respectively; there are a plurality of guide grooves (505); a plurality of guide blocks (506) are evenly arranged on the outer surface of the connecting ring (504), and the plurality of guide blocks (506) are respectively inserted into the plurality of guide grooves (505).

3. The stone flushing device according to claim 2, characterized in that: The end of the guide groove (505) away from the end of the inner tube (2) is parallel to the axis of the inner tube (2), and the end of the guide groove (505) close to the end of the inner tube (2) is arranged obliquely on the inner wall of the inner tube (2).

4. The stone flushing device according to claim 2, characterized in that: The partition plate (501) is evenly provided with a plurality of through grooves (5011), the sealing plate (502) comprises an outer ring (5021) and an inner fixing block (5022) arranged at the inner center of the outer ring (5021), and a plurality of sealing blocks (5023) are evenly arranged between the outer ring (5021) and the inner fixing block (5022), and the shape and size of the sealing blocks (5023) are larger than the shape and size of the through grooves (5011).

5. The stone flushing device according to claim 2, characterized in that: The switching assembly (7) comprises a flow groove (701) arranged inside the flushing head (402) and connected to the inner side of the movable tube (401); the flushing head (402) is provided with a flushing groove (702) connected to the flow groove (701) at one end of the flow groove (701) away from the movable tube (401); two groups of through flushing holes (703) at different angles are provided in the middle of the inner wall of the flushing groove (702); a switching ring plate (704) is also installed on the inner side of the flushing groove (702); a group of through holes (705) is opened in the middle of the switching ring plate (704); the number of the through holes (705) in one group is equal to the number of the flushing holes (703) in one group, and the positions correspond one to one; and the opening size of the through hole (705) at one end of the inner wall of the flushing groove (702) is equal to the size of the through hole (705).

6. The stone flushing device according to claim 5, characterized in that: The switching assembly (7) further comprises a center column (706), a limiting groove (707), a connecting sleeve (708) and a driving assembly (8); the limiting groove (707) is arranged at the middle of the inner wall of the flushing groove (702) away from the movable tube (401); the center column (706) is arranged in the middle of the switching ring plate (704) and one end thereof penetrates into the limiting groove (707); a plurality of spokes (709) are arranged in an array on the outer side of the center column (706), and the other end of the spokes (709) is fixedly connected to the inner surface of the switching ring plate (704); the connecting sleeve (708) is rotatably mounted on one end of the center column (706) away from the limiting groove (707), and the connecting sleeve (708) penetrates into the flow groove (701).

7. The stone washing device according to claim 6, characterized in that: The driving assembly (8) comprises a driving shaft (801), a driving groove (802) and a driving column (803); the driving groove (802) is in an annular wave shape and is arranged on the inner wall of the flow groove (701); the driving shaft (801) is installed in the flow groove (701) and is located between the partition (501) and the connecting sleeve (708); and one end of the driving shaft (801) is rotatably connected to the partition (501). A connecting column (804) is provided at one end of the driving shaft (801) away from the partition (501), and the connecting column (804) is inserted into the connecting sleeve (708). A plurality of spiral blades (8011) are evenly arranged on the surface of the driving column (803). The driving column (803) is arranged on the outer surface of the connecting sleeve (708), and one end of the driving column (803) away from the connecting sleeve (708) is inserted into the driving groove (802).

8. The stone washing device according to claim 7, characterized in that: The driving shaft (801) is a variable diameter structure, and the radius gradually decreases from the end close to the connecting sleeve (708) to the end close to the partition (501).

9. The stone washing device according to claim 7, characterized in that: A slide groove (805) is provided on the inner wall of the connecting sleeve (708), and a slider (806) is provided on the surface of the connecting column (804). The slider (806) penetrates into the slide groove (805), and the slider (806) is slidably connected to the slide groove (805).

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