Irrigation and suction integrated ureter pelvis endoscope

Abstract

The invention discloses a flushing and sucking integrated ureter pelvis endoscope, and relates to the technical field of endoscopes, the flushing and sucking integrated ureter pelvis endoscope comprises a handle and a soft lens, one side of the handle is provided with a water inlet interface and a water pumping interface, a connecting pipe matched with the water inlet interface is arranged in the handle, one end of the soft lens is located in the connecting pipe, and the other end of the soft lens is located in the water pumping interface; the flexible lens comprises an instrument channel and two symmetrically-arranged water inlet flow channels, fluid circulation structures matched with each other are arranged on the connecting pipe and the flexible lens, and an anti-blocking assembly is further arranged in the flexible lens. Through the arrangement of the instrument channel, the water inlet flow channel, the connecting pipe and the like, the soft lens has the broken stone suction function, the double suction effect is achieved in cooperation with the guide sheath, and the broken stone cleaning efficiency is improved. In the broken stone cleaning process, the broken stone position can be accurately positioned through the soft lens, the extraction frequency of the endoscope is reduced, and the operation duration is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and particularly relates to a ureteropyeloscope with integrated irrigation and suction. Background Art

[0002] The treatment of kidney stones has shifted from traditional open surgery to minimally invasive techniques. Among them, endoscopic techniques (such as ureteroscopy, percutaneous nephrolithotomy, etc.) have become the core means due to their accuracy and low invasiveness.

[0003] The existing stone removal methods mainly use stone baskets and negative pressure aspiration. However, since the stone basket needs to be withdrawn through the guiding sheath multiple times, there are still limitations for fine stone particles. Therefore, negative pressure aspiration has gradually become dominant. Currently, the method using negative pressure aspiration basically involves connecting a negative pressure device to the aspiration sheath for stone removal. During laser lithotripsy, fine crushed stones are discharged through the floating gap formed between the endoscope and the aspiration sheath.

[0004] Chinese Patent with Application No. 202411768232.1 discloses an insertion assembly and an endoscope handle. Through the cooperation of the insertion assembly and the instrument tube, when the crushed stone is blocked in the flow-through gap, the doctor controls the instrument tube to move axially towards the proximal end of the insertion tube. During the movement of the instrument tube, the posture of the crushed stone blocked in the flow-through gap will change, thereby dredging the flow-through gap and enabling the stone to be smoothly discharged.

[0005] However, for larger crushed stones, it is still necessary to slowly withdraw the endoscope and cooperate with the guiding sheath to aspirate the crushed stones. In the case of a large number of crushed stones, the number of times the endoscope is withdrawn significantly increases. Moreover, the endoscope repeatedly rubs against the ureteral wall through the sheath tube, which may cause mucosal edema, bleeding, or false passage formation, causing secondary harm to the patient's body. In addition, after each withdrawal of the endoscope, it is necessary to reposition the stone or the target area, and repeatedly adjusting the endoscope significantly increases the time consumption of the operation.

[0006] Therefore, the present invention proposes a ureteropyeloscope with integrated irrigation and suction to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a ureteropyeloscope with integrated irrigation and suction to solve the technical problems raised in the above background art.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A ureteropyeloscope with integrated irrigation and suction, comprising a handle and a flexible endoscope. An irrigation inlet and a suction inlet are respectively arranged on one side of the handle. A connecting tube matching the irrigation inlet is arranged inside the handle, and one end of the flexible endoscope is located inside the connecting tube. The soft mirror includes an instrument channel and two symmetrically arranged water inlet channels. The connecting tube and the soft mirror are provided with fluid circulation structures that cooperate with each other. The fluid circulation structure can make the fluid flow in the instrument channel and the water inlet channel and form a positive and negative pressure fluid circulation; An anti-blocking component is arranged in the soft mirror. When the water pumping interface pumps water, the anti-blocking component can make the two water inlet channels alternately connected with the instrument channel respectively so that the corresponding water inlet channels can shrink under negative pressure.

[0009] Preferably, the connecting tube has a first interface end and a second interface end, the first interface end is communicated with a transparent cup arranged on the handle, the second interface end is connected to a clamp opening arranged on the handle, and the transparent cup is connected to the water pumping interface through a pipeline.

[0010] Preferably, the fluid circulation structure comprises a main flow channel opened in the connecting pipe, the soft mirror is coaxially fixed with the main flow channel, three sealing grooves are opened in the main flow channel, sealing rings are arranged in the sealing grooves, the three sealing grooves divide the main flow channel into a water inlet chamber and a water pumping chamber, water inlet holes communicating with the water inlet chamber are respectively opened on the side walls of the two water inlet flow channels, and a connecting groove communicating with the water pumping chamber is opened on the side wall of the instrument channel; The first interface end and the second interface end are respectively provided with a first flow channel and a second flow channel communicating with the water pumping chamber.

[0011] Preferably, one end of the soft mirror away from the handle is fixedly connected to a connector matching the handle, and the connector is provided with a through hole and two connecting holes respectively matching the instrument channel and the water inlet channel; The anti-blocking component includes two connecting rings fixedly connected to the water inlet holes, and moving blocks that form a sealing fit therewith are slidably connected in the two connecting holes. A water flow groove is provided on the moving block, and an elastic member is provided between the connecting ring and the moving block. A positioning wire is fixedly connected to one side of the two moving blocks. When the positioning wire moves along the axial direction of the soft mirror, the moving block and the connecting ring can form a seal or release the seal.

[0012] Preferably, bypass holes connected to the instrument channel are respectively opened on the inner walls of the two water inlet channels, and the bypass holes and the water inlet holes are arranged alternately, and switching parts fixedly connected to the positioning wires are respectively arranged in the two water inlet channels, and when the switching parts move along the axial direction of the soft mirror, the water inlet channel is connected with the water inlet chamber or the instrument channel.

[0013] Preferably, one end of the soft mirror located in the handle is fixedly connected to a sealing block, and one end of the two positioning wires extending out of the sealing block is connected to the same electromagnetic control component, which can drive the two positioning wires to slide alternately along the axial direction of the soft mirror.

[0014] Preferably, the switching member includes a connecting cylinder slidably connected to the water inlet flow channel. The connecting cylinder is a tubular structure with a single-side opening. The connecting cylinder has an outer side surface and an inner side surface. An outer side hole matching the water inlet hole is formed on the outer side surface, and an inner side hole matching the side through hole is formed on the inner side surface.

[0015] Preferably, the electromagnetic control member includes a connecting rod rotatably connected to the inner wall of the handle. One end of the connecting rod is fixedly connected with a connecting disk. The two positioning wires are respectively fixedly connected with the connecting disk. An electromagnet is fixedly connected to the inner wall of the handle. A permanent magnet plate is coaxially and slidably connected to the connecting rod. A limiting member matching the permanent magnet plate is arranged on the inner wall of the handle. An elastic reset member is arranged between the permanent magnet plate and the connecting disk. A threaded track is formed on the connecting rod, and a connecting block matching the threaded track is arranged on the permanent magnet plate.

[0016] Preferably, a power signal line is arranged on one side of the handle. The electromagnet is electrically connected to the power signal line, and when the negative pressure device connected to the pumping interface is started, the electromagnet can be periodically powered on.

[0017] Preferably, a trigger and a lever are arranged on one side of the handle. A connecting wire cooperating with the lever is arranged in the handle. Two ends of the connecting wire are respectively fixedly connected to the end of the flexible endoscope away from the handle; The water inlet interface and the pumping interface are respectively connected with positive and negative pressure devices. A contact piece cooperating with the trigger is arranged in the handle. The contact piece is electrically connected to the positive and negative pressure devices. The rotation of the trigger can control the fluid circulation volume of the water inlet interface and the pumping interface.

[0018] The beneficial effects of the present invention are as follows: Through the settings of the instrument channel, the water inlet flow channel, the connecting pipe, etc., the flexible endoscope itself has the function of aspirating and crushing stones, and cooperates with the guiding sheath to achieve a double aspiration effect, improving the cleaning efficiency of stone crushing. And during the cleaning process of the stone crushing, the position of the stone can be accurately positioned through the flexible endoscope, reducing the number of times of withdrawing the endoscope and shortening the operation time; in addition, when the instrument channel starts negative pressure aspiration, the electromagnetic control member drives one group of moving blocks and connecting rings in the anti-blocking assembly to form a seal, and the switching member synchronously connects the corresponding water inlet flow channel with the instrument channel, so that the water inlet flow channel contracts under the negative pressure, and at this time, the volumes of the instrument channel and the swimming gap formed by the flexible endoscope and the guiding sheath can both be enlarged, which can not only reduce the problem of blockage during the rolling of the stone, but also, under the alternating contraction of the water inlet flow channel, the outer wall of the flexible endoscope and the inner wall of the instrument channel can dredge the blocked stone, reducing the risk of stone blockage. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a ureteropyeloscopic endoscope with integrated flushing and aspiration according to the present invention.

[0020] Figure 2 Schematic plan view of the internal structure of the handle of the present invention.

[0021] Figure 3 Schematic perspective view of the internal structure of the handle of the present invention.

[0022] Figure 4 Schematic plan view of the instrument channel and the water inlet channel in the flexible endoscope of the present invention.

[0023] Figure 5 Schematic partial disassembled view of the connecting tube and the flexible endoscope of the present invention.

[0024] Figure 6 Schematic fully disassembled view of the connecting tube of the present invention.

[0025] Figure 7 Schematic structural view of the water inlet hole of the present invention.

[0026] Figure 8 Schematic cross-sectional view of the flexible endoscope of the present invention.

[0027] Figure 9 Schematic disassembled view of the connecting head and the flexible endoscope of the present invention.

[0028] Figure 10 Schematic cooperation view of the anti-blocking component and the connecting head of the present invention.

[0029] Figure 11 Schematic cooperation view of the connecting ring and the moving block of the present invention.

[0030] Figure 12 Schematic perspective view of the switching member of the present invention.

[0031] Figure 13 Schematic cooperation view of the electromagnetic control member and the handle of the present invention.

[0032] Figure 14 is Figure 13 Schematic enlarged view of the structure at A in

[0033] The reference signs are: 1. Handle; 11. Water inlet interface; 12. Water pumping interface; 13. Forceps opening; 14. Trigger; 15. Lever; 16. Connecting wire; 17. Contact piece; 2. Flexible endoscope; 21. Instrument channel; 211. Connecting groove; 22. Water inlet channel; 221. Water inlet hole; 222. Side through hole; 3. Connecting tube; 31. First interface end; 311. First flow channel; 32. Second interface end; 321. Second flow channel; 33. Main flow channel; 34. Sealing groove; 35. Water inlet chamber; 36. Water pumping chamber; 4. Anti-blocking component; 41. Connecting ring; 42. Moving block; 43. Water passing groove; 44. Elastic member; 45. Positioning wire; 5. Transparent cup; 6. Connector; 61. Connecting hole; 7. Switching member; 71. Connecting cylinder; 72. Outer hole; 73. Inner hole; 8. Sealing block; 9. Electromagnetic control member; 91. Connecting rod; 92. Connecting disc; 93. Electromagnet; 94. Permanent magnet plate; 95. Elastic reset member; 96. Threaded track. Specific implementation mode

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present invention.

[0035] Embodiment 1 Although the existing negative pressure aspiration lithotripsy endoscope can significantly improve the surgical efficiency compared with the stone retrieval basket, for larger stones, it is still necessary to slowly withdraw the endoscope and cooperate with the guiding sheath to aspirate the stones. When the number of stones is large, the number of times of withdrawing the endoscope increases significantly. If the endoscope repeatedly rubs the ureteral wall through the sheath of the guiding sheath, it may cause mucosal edema, bleeding or false passage formation. Moreover, after each withdrawal of the endoscope, it is necessary to reposition the stone or the target area, and repeatedly adjusting the endoscope significantly increases the time-consuming of the operation. To solve the above problems, this embodiment is specifically invented.

[0036] Please refer to Figures 1 to 14 As shown, a ureteropyeloscopic endoscope with integrated irrigation and aspiration in an embodiment of the present invention includes a handle 1 and a flexible endoscope 2. An irrigation inlet 11 and a pumping outlet 12 are respectively arranged on one side of the handle 1, and a connecting pipe 3 matching the irrigation inlet 11 is arranged inside the handle 1. One end of the flexible endoscope 2 is located inside the connecting pipe 3.

[0037] The flexible endoscope 2 includes an instrument channel 21 and two symmetrically arranged irrigation channels 22. A fluid circulation structure is arranged on the connecting pipe 3 and the flexible endoscope 2, and the fluid circulation structure can enable the fluid to flow in the instrument channel 21 and the irrigation channels 22 and form a positive and negative pressure fluid circulation.

[0038] An anti-blocking component 4 is arranged inside the flexible endoscope 2. When the pumping outlet 12 pumps water, the anti-blocking component 4 can alternately connect the two irrigation channels 22 with the instrument channel 21 respectively, so that the corresponding irrigation channel 22 contracts under negative pressure, and thus the stone is not easily blocked in the instrument channel 21.

[0039] Please refer to Figure 5 and Figure 6 As shown, the connecting pipe 3 has a first interface end 31 and a second interface end 32. The first interface end 31 communicates with the transparent cup 5 provided on the handle 1, and the second interface end 32 is connected to the forceps opening 13 provided on the handle 1. The transparent cup 5 is connected to the water pumping interface 12 through a pipe.

[0040] The fluid circulation structure includes a main flow channel 33 opened in the connecting pipe 3. The flexible endoscope 2 is coaxially fixed with the main flow channel 33. Three sealing grooves 34 are opened in the main flow channel 33, and sealing rings are arranged in the sealing grooves 34. The three sealing grooves 34 divide the main flow channel 33 into a water inlet chamber 35 and a water pumping chamber 36. Water inlet holes 221 communicating with the water inlet chamber 35 are respectively opened on the side walls of the two water inlet flow channels 22. A connecting pipe 3 cooperating with the water inlet interface 11 is arranged on the side wall of the water inlet chamber 35. The connecting pipe 3 and the water inlet interface 11 are connected by a hose. A connecting groove 211 communicating with the water pumping chamber 36 is opened on the side wall of the instrument channel 21. Normal saline enters the water inlet chamber 35 from the water inlet interface 11, the hose and the connecting pipe 3, and enters the renal pelvis through the water inlet holes 221 and the two water inlet flow channels 22.

[0041] First flow channels 311 and second flow channels 321 communicating with the water pumping chamber 36 are respectively opened on the first interface end 31 and the second interface end 32. When performing lithotripsy, the laser wire of the holmium laser directly inserts into the instrument channel 21 through the forceps opening 13, the second flow channel 321 and the connecting groove 211. After the lithotripsy is completed, the negative pressure device of the endoscope is started. The crushed stones in the renal pelvis are aspirated into the instrument channel 21 under negative pressure, pass through the connecting groove 211 and the first flow channel 311 and enter the transparent cup 5. A filter screen is arranged in the transparent cup 5 to filter the crushed stones. The liquid in the transparent cup 5 is discharged through the pipe and the water pumping interface 12.

[0042] Please refer to Figures 1 to 3 As shown, a trigger 14 and a lever 15 are arranged on one side of the handle 1. A connecting wire 16 cooperating with the lever 15 is arranged in the handle 1. Both ends of the connecting wire 16 are fixedly connected to the end of the flexible endoscope 2 far from the handle 1.

[0043] The water inlet interface 11 and the water pumping interface 12 are respectively connected with positive and negative pressure devices. A contact piece 17 cooperating with the trigger 14 is arranged in the handle 1. The contact piece 17 is electrically connected to the positive and negative pressure devices. Rotation of the trigger 14 can control the fluid circulation volume of the water inlet interface 11 and the water pumping interface 12.

[0044] In use, the doctor successively inserts the guiding sheath and the endoscope into the renal pelvis through the ureter. By pulling the trigger 14, the positive pressure device is controlled to start, so that normal saline enters the renal pelvis through the connecting tube 3 and the flexible endoscope 2. Then, the laser wire of the holmium laser is directly inserted into the instrument channel 21 through the forceps opening 13, the second flow channel 321 and the connecting groove 211, and the camera arranged on the flexible endoscope 2 is used to crush the stone by laser.

[0045] When performing laser lithotripsy, the negative pressure device connected to the guiding sheath is started, and the fine stone fragments are discharged to the outside through the moving gap between the endoscope and the guiding sheath. After all the stones are completely crushed, the laser wire is withdrawn and the forceps opening 13 is closed. The operator controls the negative pressure device to start through the trigger 14. Part of the stone fragments enter the transparent cup 5 through the instrument channel 21 and the first flow channel 311 under negative pressure suction. The operator can directly see the stone fragments in the transparent cup 5, and the liquid in the transparent cup 5 is discharged through the hose and the water pumping interface 12.

[0046] In summary, through the settings of the instrument channel 21, the water inlet flow channel 22, the connecting tube 3, etc., after the laser lithotripsy is completed, the laser wire is withdrawn, and the negative pressure device connected to the flexible endoscope 2 enables it to have the function of sucking stone fragments, and a double suction effect is achieved in cooperation with the guiding sheath, improving the cleaning efficiency of the lithotripsy. And during the cleaning process of the lithotripsy, the position of the stone fragments can also be accurately positioned through the flexible endoscope 2, reducing the number of times the endoscope is withdrawn and shortening the operation time.

[0047] In addition, the integrated connecting tube 3 can effectively reduce the connection points between the water inlet interface 11, the water pumping interface 12 and the transparent cup 5, making the installation of the endoscope more efficient; and the laser wire can be directly inserted into the instrument channel 21 through the forceps opening 13 and the second flow channel 321, avoiding the problem of blockage during the insertion process of the laser wire.

[0048] Embodiment 2 As can be seen from the above embodiments, the cleaning of the stone fragments is mainly divided into two parts: one is that during the process of crushing the stone by the holmium laser, the negative pressure device connected to the guiding sheath is started, and the fine stone fragments are sucked away from the moving gap between the endoscope and the guiding sheath; the other is that after the holmium laser lithotripsy is completed, the doctor withdraws the laser wire from the flexible endoscope 2 and starts the negative pressure device connected to the endoscope. The stone fragments enter the moving gap and the instrument channel 21 of the flexible endoscope 2. However, at this time, the number of stone fragments is large and the volume is large, and some stone fragments are likely to form blockages in the moving gap or the instrument channel 21 during the rolling process. At this time, it is necessary to clear the blockage, which is not conducive to the smooth progress of the operation. Further improvements are made on the basis of the above embodiments.

[0049] Please refer to Figures 9 to 14As shown, one end of the flexible endoscope 2 far from the handle 1 is fixedly connected to a connector 6 that matches it. A through hole and two connection holes 61 that respectively match the instrument channel 21 and the water inlet channel 22 are provided inside the connector 6.

[0050] The anti-blocking component 4 includes two connection rings 41 fixedly connected to the water inlet holes 221. A moving block 42 that forms a sealing fit with them is slidably connected in each of the two connection holes 61. A water passing groove 43 is provided on the moving block 42. An elastic member 44 is provided between the connection ring 41 and the moving block 42. One side of the two moving blocks 42 is fixedly connected to a positioning wire 45. When the positioning wire 45 moves along the axial direction of the flexible endoscope 2, the moving block 42 can form a seal or release the seal with the connection ring 41.

[0051] In the initial state, both the two moving blocks 42 and the connection rings 41 are in a state of releasing the seal, and normal saline can enter the renal pelvis through the water passing groove 43 and the connection ring 41.

[0052] Please refer to Figure 8 and Figure 12 As shown, side through holes 222 communicating with the instrument channel 21 are respectively provided on the inner walls of the two water inlet channels 22. The side through holes 222 and the water inlet holes 221 are arranged staggeredly. And switching members 7 fixedly connected to the positioning wires 45 are respectively provided in the two water inlet channels 22. When the switching member 7 moves along the axial direction of the flexible endoscope 2, the water inlet channel 22 is communicated with the water inlet chamber 35 or the instrument channel 21. When the water inlet channel 22 is communicated with the water inlet chamber 35, the side through holes 222 and the instrument channel 21 are in a closed state. On the contrary, the water inlet channel 22 is closed to the water inlet chamber 35.

[0053] Since the flexible endoscope 2 is formed by extrusion molding, both of its ends are open. Therefore, it is necessary to seal one end of the flexible endoscope 2 located inside the handle 1. A sealing block 8 is fixedly connected to one end of the flexible endoscope 2 located inside the handle 1. The sealing block 8 can seal the instrument channel 21 and the two water inlet channels 22. One end of the two positioning wires 45 extending out of the sealing block 8 is connected to the same electromagnetic control member 9, and the electromagnetic control member 9 can drive the two positioning wires 45 to slide staggeredly along the axial direction of the flexible endoscope 2.

[0054] Please refer to Figure 12 As shown, the switching member 7 includes a connecting cylinder 71 slidably connected to the water inlet channel 22. The connecting cylinder 71 is a cylindrical structure with a single-side opening. The connecting cylinder 71 has an outer side surface and an inner side surface. An outer side hole 72 matching the water inlet hole 221 is provided on the outer side surface, and an inner side hole 73 matching the side through hole 222 is provided on the inner side surface.

[0055] It should be noted that lubricating coatings are applied on the surfaces and inner walls of the connecting cylinder 71 and the flexible endoscope 2.

[0056] Please refer to Figure 13 and Figure 14As shown in the figure, the electromagnetic control part 9 includes a connecting rod 91 rotatably connected to the inner wall of the handle 1. One end of the connecting rod 91 is fixedly connected with a connecting disk 92. Two positioning wires 45 are respectively fixedly connected with the connecting disk 92. An electromagnet 93 is fixedly connected to the inner wall of the handle 1. A permanent magnet plate 94 is coaxially and slidably connected to the connecting rod 91. A limiting part matching the permanent magnet plate 94 is arranged on the inner wall of the handle 1. An elastic reset part 95 is arranged between the permanent magnet plate 94 and the connecting disk 92. A threaded track 96 is formed on the connecting rod 91. A connecting block matching the threaded track 96 is arranged on the permanent magnet plate 94.

[0057] In this embodiment, the limiting part includes a limiting rod fixedly connected to the inner wall of the handle 1. A limiting block matching the limiting rod is arranged on one side of the permanent magnet plate 94. When the permanent magnet plate 94 moves along the axial direction of the connecting rod 91, the limiting rod and the limiting block can limit the rotation of the permanent magnet plate 94, so that the permanent magnet plate 94 can drive the connecting rod 91 to rotate under the action of the spiral track and the connecting block during movement.

[0058] A power supply signal wire is arranged on one side of the handle 1. The electromagnet 93 is electrically connected to the power supply signal wire. And when the negative pressure device connected to the water pumping interface 12 starts, the electromagnet 93 can be periodically electrified.

[0059] On the basis of the above embodiment, during laser lithotripsy, the two moving blocks 42 and the connecting ring 41 are not sealed. When the laser lithotripsy ends and the operator controls the negative pressure device to start through the trigger 14, the electromagnet 93 and the negative pressure device start at the same time. The permanent magnet plate 94 moves towards the direction of the rotating disk under the repulsive force of the magnetic force, overcoming the elastic reset part 95. Under the action of the threaded track 96 and the connecting block, the connecting disk 92 rotates and makes the two positioning wires 45 move in the opposite direction, thus achieving the effect of one loose and one tight.

[0060] When the positioning wire 45 corresponding to one of the moving blocks 42 is in a relaxed state, the moving block 42 approaches the connecting ring 41 under the action of the elastic part 44 and forms a seal with it. The corresponding switching part 7 slides in the water inlet flow channel 22, and makes the side through hole 222 communicate with the instrument channel 21 while the water inlet hole 221 is closed with the water inlet chamber 35. At this time, the instrument channel 21 is in a negative pressure suction state, and the water inlet flow channel 22 communicating with the instrument channel 21 gradually contracts under the negative pressure.

[0061] As mentioned above, the electromagnet 93 is periodically electrified. When the electromagnet 93 is powered off, the permanent magnet plate 94 resets under the action of the elastic reset part 95 and makes the rotating disk rotate in the opposite direction. At this time, the contracted water inlet flow channel 22 communicates with the water inlet chamber 35, while the moving block 42 in the other water inlet flow channel 22 forms a seal with the connecting ring 41 and starts to contract under the negative pressure of the instrument channel 21, so as to make the two water inlet flow channels 22 contract alternately.

[0062] In summary, through the settings of the electromagnetic control member 9, the switching member 7, the anti-blocking assembly 4, etc., when the instrument channel 21 starts to perform negative pressure suction, the electromagnetic control member 9 drives one group of the moving blocks 42 and the connecting ring 41 in the anti-blocking assembly 4 to form a seal, and the switching member 7 synchronously communicates the corresponding water inlet flow channel 22 with the instrument channel 21, so that the water inlet flow channel 22 contracts under the negative pressure. At this time, the volumes of the instrument channel 21 and the floating gap formed by the flexible endoscope 2 and the guiding sheath can both be enlarged, which can not only reduce the problem of blockage during the rolling of the crushed stones, but also, under the alternating contraction of the water inlet flow channel 22, dredge the crushed stones blocking the outer wall of the flexible endoscope 2 and the inner wall of the instrument channel 21, further reducing the risk of stone blockage.

[0063] As mentioned above, the above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered by the protection scope of the present invention.

Claims

1. A ureteropyeloscope with integrated irrigation and aspiration functions, comprising a handle (1) and a flexible endoscope (2), characterized in that, One side of the handle (1) is respectively provided with a water inlet interface (11) and a water pumping interface (12). A connecting pipe (3) matching the water inlet interface (11) is arranged in the handle (1), and one end of the flexible endoscope (2) is located in the connecting pipe (3). The flexible endoscope (2) includes an instrument channel (21) and two symmetrically arranged water inlet channels (22). A fluid circulation structure which can make the fluid flow in the instrument channel (21) and the water inlet channels (22) and form a positive and negative pressure fluid circulation is arranged on the connecting pipe (3) and the flexible endoscope (2). An anti-blocking component (4) is arranged in the flexible endoscope (2). When the water pumping interface (12) pumps water, the anti-blocking component (4) can make the two water inlet channels (22) communicate with the instrument channel (21) alternately so that the corresponding water inlet channel (22) contracts under negative pressure.

2. The ureteropyeloscope with integrated irrigation and aspiration according to claim 1, characterized in that, The connecting pipe (3) has a first interface end (31) and a second interface end (32). The first interface end (31) is communicated with a transparent cup (5) arranged on the handle (1), the second interface end (32) is connected with a forceps port (13) arranged on the handle (1), and the transparent cup (5) is connected with the water pumping interface (12) through a pipeline.

3. The ureteropyeloscope with integrated irrigation and aspiration according to claim 2, characterized in that, The fluid circulation structure includes a main channel (33) opened in the connecting pipe (3). The flexible endoscope (2) is coaxially fixed with the main channel (33). Three sealing grooves (34) are opened in the main channel (33), and sealing rings are arranged in the sealing grooves (34). The three sealing grooves (34) divide the main channel (33) into a water inlet chamber (35) and a water pumping chamber (36). Water inlet holes (221) communicated with the water inlet chamber (35) are respectively opened on the side walls of the two water inlet channels (22), and a connecting groove (211) communicated with the water pumping chamber (36) is opened on the side wall of the instrument channel (21). First channels (311) and second channels (321) communicated with the water pumping chamber (36) are respectively opened on the first interface end (31) and the second interface end (32).

4. The integrated aspiration and irrigation ureteropyeloscope according to claim 3, wherein, One end of the flexible endoscope (2) far away from the handle (1) is fixedly connected with a connecting head (6) matching it. Through holes and two connecting holes (61) respectively matching the instrument channel (21) and the water inlet channels (22) are arranged in the connecting head (6). The anti-blocking component (4) includes two connecting rings (41) fixedly connected with the water inlet holes (221). Moving blocks (42) which form a sealing fit with the connecting holes (61) are slidably connected in the two connecting holes (61). Water passing grooves (43) are opened on the moving blocks (42). An elastic member (44) is arranged between the connecting rings (41) and the moving blocks (42). One side of the two moving blocks (42) is fixedly connected with a positioning wire (45). When the positioning wire (45) moves along the axial direction of the flexible endoscope (2), the moving blocks (42) can form a seal or release the seal with the connecting rings (41).

5. The integrated irrigation and aspiration ureteropyeloscope according to claim 4, characterized in that, On the inner walls of the two water inlet channels (22), side through holes (222) communicating with the instrument channel (21) are respectively formed. The side through holes (222) are arranged staggeredly with respect to the water inlet holes (221). And in each of the two water inlet channels (22), a switching member (7) fixedly connected to a positioning wire (45) is arranged. When the switching member (7) moves axially along the flexible endoscope (2), the water inlet channel (22) is communicated with the water inlet chamber (35) or the instrument channel (21).

6. The integrated aspiration and irrigation ureteropyeloscope according to claim 5, characterized in that One end of the flexible endoscope (2) located inside the handle (1) is fixedly connected with a sealing block (8). One end of each of the two positioning wires (45) extending out of the sealing block (8) is connected to the same electromagnetic control member (9). The electromagnetic control member (9) can drive the two positioning wires (45) to slide axially along the flexible endoscope (2) in a staggered manner.

7. The integrated aspiration and irrigation ureteropyeloscope according to claim 6, wherein The switching member (7) includes a connecting cylinder (71) slidably connected to the water inlet channel (22). The connecting cylinder (71) is a cylindrical structure with an opening on one side. The connecting cylinder (71) has an outer side surface and an inner side surface. An outer side hole (72) matching the water inlet hole (221) is formed on the outer side surface, and an inner side hole (73) matching the side through hole (222) is formed on the inner side surface.

8. The integrated irrigation and aspiration ureteropyeloscope according to claim 7, characterized in that, The electromagnetic control member (9) includes a connecting rod (91) rotatably connected to the inner wall of the handle (1). One end of the connecting rod (91) is fixedly connected with a connecting disk (92). The two positioning wires (45) are respectively fixedly connected to the connecting disk (92). An electromagnet (93) is fixedly connected to the inner wall of the handle (1). A permanent magnet plate (94) is slidably connected coaxially on the connecting rod (91). A limiting member matching the permanent magnet plate (94) is arranged on the inner wall of the handle (1). An elastic reset member (95) is arranged between the permanent magnet plate (94) and the connecting disk (92). A threaded track (96) is formed on the connecting rod (91), and a connecting block matching the threaded track (96) is arranged on the permanent magnet plate (94).

9. The integrated aspiration and irrigation ureteropyeloscope according to claim 8, wherein, A power supply signal wire is arranged on one side of the handle (1). The electromagnet (93) is electrically connected to the power supply signal wire. And after the negative pressure device connected to the pumping interface (12) is started, the electromagnet (93) can be periodically powered on.

10. The ureteropyeloscope with integrated irrigation and aspiration according to claim 9, characterized in that, A trigger (14) and a shift lever (15) are arranged on one side of the handle (1). A connecting wire (16) matching the shift lever (15) is arranged inside the handle (1). Two ends of the connecting wire (16) are respectively fixedly connected to one end of the flexible endoscope (2) away from the handle (1). The water inlet interface (11) and the pumping interface (12) are respectively connected with positive and negative pressure devices. A contact piece (17) matching the trigger (14) is arranged inside the handle (1). The contact piece (17) is electrically connected to the positive and negative pressure devices. Rotation of the trigger (14) can control the fluid circulation amount of the water inlet interface (11) and the pumping interface (12).

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