A ureteropelvic endoscope with integrated flushing and suction

Abstract

The present invention discloses a ureteropelvic endoscope with integrated flushing and suction, which relates to the technical field of endoscopes and includes a handle and a flexible endoscope. A water inlet interface and a water extraction interface are provided on one side of the handle, respectively. A connecting tube matching the water inlet interface is provided in the handle, and one end of the flexible endoscope is located in the connecting tube. The flexible endoscope includes an instrument channel and two symmetrically arranged water inlet channels. The connecting tube and the flexible endoscope are provided with fluid circulation structures that cooperate with each other, and an anti-blocking component is also provided in the flexible endoscope. The present invention enables the flexible endoscope itself to have the function of suctioning gravel through the arrangement of the instrument channel, the water inlet channel and the connecting tube, and cooperates with the guide sheath to achieve a double suction effect, thereby improving the efficiency of gravel cleaning. In addition, during the gravel cleaning process, the position of the gravel can be accurately located by the flexible endoscope, thereby reducing the number of times the endoscope is pulled out and shortening the operation time.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to a ureteropelvic endoscope with flushing and suction functions. Background Art

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

[0003] The existing stone removal methods mainly use stone removal baskets and negative pressure suction. However, since the stone removal baskets need to be pulled out of the guide sheath multiple times, there are still limitations for small stone particles, so negative pressure suction has gradually become dominant. The existing method of using negative pressure suction is basically to use an external negative pressure device to remove stones. During laser lithotripsy, small stones are discharged through the floating gap formed by the endoscope and the suction sheath.

[0004] Chinese patent application number 202411768232.1 discloses an insertion assembly and an endoscope handle. Through the cooperation of the insertion assembly and the instrument tube, when stones are blocked in the flow gap, the doctor controls the instrument tube to move axially toward the proximal end of the insertion tube. During the movement of the instrument tube, the posture of the stones blocked in the flow gap will change, thereby dredging the flow gap so that the stones can be discharged smoothly.

[0005] However, for larger stones, the endoscope still needs to be slowly withdrawn and the stones need to be sucked out with the help of the guide sheath. For cases with a large number of stones, the number of times the endoscope is withdrawn increases significantly, and the endoscope repeatedly rubs the ureteral wall through the sheath, which may cause mucosal edema, bleeding or false passage formation, causing secondary damage to the patient's body. In addition, the stone or target area needs to be repositioned each time the endoscope is withdrawn, and repeated adjustments of the endoscope significantly increase the time taken for the operation.

[0006] To this end, the present invention proposes a ureteropelvic endoscope with flushing and suction to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a ureteropelvic endoscope with integrated flushing and suction to solve the technical problems raised in the above-mentioned background technology.

[0008] To achieve the above objectives, the present invention provides the following technical solutions: a ureteropelvic endoscope with integrated flushing and suction, comprising a handle and a flexible endoscope, wherein one side of the handle is provided with a water inlet interface and a water extraction interface, respectively, a connecting tube matching the water inlet interface is provided inside the handle, and one end of the flexible endoscope is located inside the connecting tube;

[0009] The flexible mirror includes an instrument channel and two symmetrically arranged water inlet channels. The connecting tube and the flexible mirror are provided with mutually coordinated fluid circulation structures, which can enable the fluid to flow in the instrument channel and the water inlet channel and form a positive and negative pressure fluid circulation;

[0010] An anti-blocking component is provided in the soft mirror. When the water pumping interface pumps water, the anti-blocking component can make the two water inlet channels alternately connected to the instrument channel so that the corresponding water inlet channels can contract under negative pressure.

[0011] Preferably, the connecting tube has a first interface end and a second interface end, the first interface end is communicated with a transparent cup provided on the handle, the second interface end is connected to a clamp opening provided on the handle, and the transparent cup is connected to the water pumping interface through a pipeline.

[0012] Preferably, the fluid circulation structure includes a main channel opened in the connecting pipe, the soft endoscope is coaxially fixed with the main channel, three sealing grooves are opened in the main channel, and sealing rings are provided in the sealing grooves. The three sealing grooves divide the main 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 channels, and a connecting groove communicating with the water pumping chamber is opened on the side wall of the instrument channel;

[0013] A first flow channel and a second flow channel communicating with the water pumping chamber are respectively formed on the first interface end and the second interface end.

[0014] Preferably, the end of the soft endoscope away from the handle is fixedly connected to a connector that matches the handle, and the connector is provided with a through hole and two connection holes that match the instrument channel and the water inlet channel respectively;

[0015] The anti-blocking component includes two connecting rings fixedly connected to the water inlet hole, and a moving block is slidably connected to the two connecting holes to form a sealing fit therewith. A water flow groove is provided on the moving block, and an elastic part 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.

[0016] Preferably, bypass holes connected to the instrument channel are respectively opened on the inner walls of the two water inlet channels, the bypass holes and the water inlet holes are staggered, and switching parts fixedly connected to the positioning wires are respectively provided 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.

[0017] 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.

[0018] Preferably, the switching member includes a connecting tube that is slidingly connected to the water inlet channel. The connecting tube is a cylindrical structure with a single-side opening. The connecting tube has an outer side surface and an inner side surface. The outer side surface is provided with an outer hole that matches the water inlet hole, and the inner side surface is provided with an inner hole that matches the bypass hole.

[0019] Preferably, the electromagnetic control component includes a connecting rod rotatably connected to the inner wall of the handle, one end of the connecting rod is fixedly connected to a connecting disk, the two positioning wires are respectively fixedly connected to the connecting disk, an electromagnet is fixedly connected to the inner wall of the handle, a permanent magnet plate is coaxially slidably connected to the connecting rod, a limiting component matching the permanent magnet plate is provided on the inner wall of the handle, an elastic reset component is provided between the permanent magnet plate and the connecting disk, a threaded track is provided on the connecting rod, and a connecting block matching the threaded track is provided on the permanent magnet plate.

[0020] Preferably, a power signal line is provided 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 water pumping interface is started, the electromagnet can be energized periodically.

[0021] Preferably, a trigger and a lever are provided on one side of the handle, a connecting wire cooperating with the lever is provided inside the handle, and both ends of the connecting wire are respectively fixedly connected to the end of the soft mirror away from the handle;

[0022] The water inlet interface and the water pumping interface are respectively connected to positive and negative pressure devices. A contact piece that cooperates with the trigger is provided in the handle. The contact piece is electrically connected to the positive and negative pressure devices. Rotating the trigger can control the fluid circulation volume of the water inlet interface and the water pumping interface.

[0023] The beneficial effects of the present invention are:

[0024] The present invention, through the arrangement of the instrument channel, water inlet channel, and connecting tube, enables the flexible endoscope to have the function of suctioning gravel, and cooperates with the guide sheath to achieve a dual suction effect, thereby improving the efficiency of gravel cleaning. Furthermore, during the gravel cleaning process, the flexible endoscope can also accurately locate the position of the gravel, reducing the number of times the endoscope needs to be withdrawn and shortening the operation time. In addition, when the instrument channel begins to perform negative pressure suction, the electromagnetic control component drives one set of moving blocks and connecting rings in the anti-blocking assembly to form a seal, and the switching component simultaneously connects the corresponding water inlet channel with the instrument channel, thereby causing the water inlet channel to contract under the action of negative pressure. At this time, the volume of the instrument channel and the free clearance formed by the flexible endoscope and the guide sheath can be expanded. This not only reduces the problem of gravel blocking during rolling, but also allows the outer wall of the flexible endoscope and the inner wall of the instrument channel to dredge the blocked gravel under the alternating contraction of the water inlet channel, thereby reducing the risk of stone blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a ureteropelvic endoscope with flushing and suction integrated in the present invention.

[0026] Figure 2 It is a schematic diagram of the planar structure inside the handle of the present invention.

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure inside the handle of the present invention.

[0028] Figure 4 It is a plan view of the instrument channel and water inlet channel in the soft endoscope of the present invention.

[0029] Figure 5 This is a partial disassembly diagram of the connecting tube and the soft mirror of the present invention.

[0030] Figure 6 This is a schematic diagram of the complete disassembly of the connecting pipe of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the water inlet of the present invention.

[0032] Figure 8 It is a cross-sectional schematic diagram of the soft lens of the present invention.

[0033] Figure 9 Schematic diagram of the disassembly of the connector and the soft lens of the present invention.

[0034] Figure 10 Schematic diagram of the cooperation between the anti-blocking component and the connector of the present invention.

[0035] Figure 11 It is a schematic diagram of the cooperation between the connecting ring and the moving block of the present invention.

[0036] Figure 12 It is a schematic diagram of the three-dimensional structure of the switching component of the present invention.

[0037] Figure 13 This is a schematic diagram of the coordination between the electromagnetic control element and the handle of the present invention.

[0038] Figure 14 for Figure 13 A magnified schematic diagram of the structure at point A.

[0039] The accompanying drawings are:

[0040] 1. Handle; 11. Water inlet; 12. Water extraction port; 13. Clamp opening; 14. Trigger; 15. Lever; 16. Connecting wire; 17. Contact piece;

[0041] 2. Soft endoscope; 21. Instrument channel; 211. Connection slot; 22. Water inlet channel; 221. Water inlet hole; 222. Bypass hole;

[0042] 3. Connecting pipe; 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. Pumping chamber;

[0043] 4. Anti-blocking assembly; 41. Connecting ring; 42. Moving block; 43. Water channel; 44. Elastic member; 45. Positioning wire;

[0044] 5. Transparent cup;

[0045] 6. Connector; 61. Connecting hole;

[0046] 7. Switching member; 71. Connecting tube; 72. Outer hole; 73. Inner hole;

[0047] 8. Sealing block;

[0048] 9. Electromagnetic control component; 91. Connecting rod; 92. Connecting plate; 93. Electromagnet; 94. Permanent magnet plate; 95. Elastic reset component; 96. Threaded track. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0050] Example 1

[0051] Although existing negative pressure suction lithotripsy endoscopes can significantly improve surgical efficiency compared to stone removal baskets, for larger stones, the endoscope still needs to be slowly withdrawn and used with an introducer sheath to absorb the stones. When the number of stones is large, the number of withdrawals of the endoscope increases significantly. If the endoscope repeatedly passes through the sheath of the introducer sheath and rubs against the ureteral wall, it may cause mucosal edema, bleeding, or false passage formation. In addition, the stone or target area needs to be repositioned each time the endoscope is withdrawn, and repeated adjustments of the endoscope significantly increase the time required for surgery. This embodiment is specially invented to solve the above problems.

[0052] See also Figures 1 to 14 As shown, a ureteropelvic endoscope with integrated flushing and suction according to an embodiment of the present invention includes a handle 1 and a flexible endoscope 2. A water inlet interface 11 and a water extraction interface 12 are respectively provided on one side of the handle 1. A connecting tube 3 matching the water inlet interface 11 is provided inside the handle 1, and one end of the flexible endoscope 2 is located inside the connecting tube 3.

[0053] The soft mirror 2 includes an instrument channel 21 and two symmetrically arranged water inlet channels 22. The connecting tube 3 and the soft mirror 2 are provided with mutually cooperating fluid circulation structures. The fluid circulation structure enables the fluid to flow in the instrument channel 21 and the water inlet channel 22 and form a positive and negative pressure fluid circulation.

[0054] An anti-blocking component 4 is provided in the soft mirror 2. When the water pumping interface 12 pumps water, the anti-blocking component 4 can make the two water inlet channels 22 alternately connected with the instrument channel 21 so that the corresponding water inlet channels 22 shrink under negative pressure, thereby making it difficult for gravel to be blocked in the instrument channel 21.

[0055] See also Figure 5 and Figure 6 As shown, the connecting tube 3 has a first interface end 31 and a second interface end 32. The first interface end 31 is connected to the transparent cup 5 provided on the handle 1, and the second interface end 32 is connected to the clamp opening 13 provided on the handle 1. The transparent cup 5 is connected to the water pumping interface 12 through a pipeline.

[0056] The fluid circulation structure includes a main channel 33 opened in the connecting tube 3, the soft mirror 2 is coaxially fixed with the main channel 33, three sealing grooves 34 are opened in the main channel 33, and a sealing ring is provided in the sealing groove 34. The three sealing grooves 34 divide the main channel 33 into a water inlet chamber 35 and a water pumping chamber 36. The side walls of the two water inlet channels 22 are respectively provided with water inlet holes 221 connected to the water inlet chamber 35. The side wall of the water inlet chamber 35 is provided with a connecting tube 3 that cooperates with the water inlet interface 11. The connecting tube 3 and the water inlet interface 11 are connected by a hose. The side wall of the instrument channel 21 is provided with a connecting groove 211 connected to the water pumping chamber 36. Physiological saline enters the water inlet chamber 35 from the water inlet interface 11, the hose and the connecting tube 3, and enters the renal pelvis through the water inlet hole 221 and the two water inlet channels 22.

[0057] The first interface end 31 and the second interface end 32 are respectively provided with a first flow channel 311 and a second flow channel 321 connected to the pumping chamber 36. When performing lithotripsy, the laser filament 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. After the lithotripsy is completed, the negative pressure device of the endoscope is started, and the gravel in the renal pelvis broken by the laser enters the instrument channel 21 under negative pressure suction, and enters the transparent cup 5 through the connecting groove 211 and the first flow channel 311. The transparent cup 5 is provided with a filter to filter the gravel, and the liquid in the transparent cup 5 is discharged through the pipeline and the pumping interface 12.

[0058] See also Figures 1 to 3 As shown, a trigger 14 and a lever 15 are provided on one side of the handle 1 , a connecting wire 16 cooperating with the lever 15 is provided inside the handle 1 , and both ends of the connecting wire 16 are fixedly connected to the end of the soft mirror 2 away from the handle 1 .

[0059] The water inlet interface 11 and the water pumping interface 12 are respectively connected to positive and negative pressure devices. A contact piece 17 that cooperates with the trigger 14 is provided in the handle 1. The contact piece 17 is connected to the electrical signals of the positive and negative pressure devices. The rotation of the trigger 14 can control the fluid circulation volume of the water inlet interface 11 and the water pumping interface 12.

[0060] During use, the doctor sequentially inserts the guide sheath and the endoscope into the renal pelvis through the ureter, and controls the positive pressure device by pulling the trigger 14 to allow physiological saline to enter the renal pelvis through the connecting tube 3 and the soft endoscope 2. The laser filament of the holmium laser is then directly inserted into the instrument channel 21 through the forceps opening 13, the second flow channel 321 and the connecting groove 211, and the stones are crushed by laser in conjunction with the camera provided on the soft endoscope 2.

[0061] During laser crushing, the negative pressure device connected to the guide sheath is activated, and the fine stone particles are discharged to the outside through the floating gap between the endoscope and the guide sheath. When all the stones are crushed, the laser wire is withdrawn and the forceps opening 13 is closed. The operator controls the activation of the negative pressure device through the trigger 14. A part of the stone is sucked into the transparent cup 5 through the instrument channel 21 and the first flow channel 311 under negative pressure. The operator can intuitively see the stone in the transparent cup 5, and the liquid in the transparent cup 5 is discharged through the hose and the water pumping interface 12.

[0062] In summary, through the arrangement of instrument channel 21, water inlet channel 22, and connecting tube 3, after laser lithotripsy is completed, the laser filament is withdrawn, and the negative pressure device connected to the flexible endoscope 2 enables it to suction the lithotripsy. This, combined with the guide sheath, achieves a dual suction effect, improving lithotripsy removal efficiency. Furthermore, during the lithotripsy removal process, the flexible endoscope 2 can be used to precisely locate the lithotripsy, reducing the number of endoscope withdrawals and the duration of the procedure.

[0063] In addition, the integrated connecting tube 3 can effectively reduce the number of connection points between the water inlet interface 11, the water extraction 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 clamp opening 13 and the second flow channel 321, avoiding the problem of blockage of the laser wire during the insertion process.

[0064] Example 2

[0065] As can be seen from the above embodiment, lithotripsy is primarily performed in two steps: first, during the holmium laser lithotripsy process, the negative pressure device connected to the guide sheath is activated to draw tiny lithotripsy away from the free space between the endoscope and the guide sheath; second, after the holmium laser lithotripsy is complete, the doctor removes the laser filament from the endoscope 2 and activates the negative pressure device connected to the endoscope, causing the lithotripsy to enter the free space and the instrument channel 21 of the endoscope 2. However, at this point, the lithotripsy is numerous and large in size, and some of the lithotripsy can easily clog the free space or instrument channel 21 during tumbling, requiring clearing, which can hinder the smooth progress of the procedure. Further improvements have been made based on the above embodiment.

[0066] See also Figures 9 to 14 As shown, the end of the soft endoscope 2 away from the handle 1 is fixedly connected to a connector 6 that matches it. The connector 6 is provided with a through hole and two connecting holes 61 that match the instrument channel 21 and the water inlet channel 22 respectively.

[0067] The anti-blocking component 4 includes two connecting rings 41 fixedly connected to the water inlet hole 221, and a moving block 42 is slidably connected to the two connecting holes 61 to form a sealing fit therewith. A water flow groove 43 is provided on the moving block 42, and an elastic member 44 is provided between the connecting ring 41 and the moving block 42. A positioning wire 45 is fixedly connected to one side of the two moving blocks 42. When the positioning wire 45 moves along the axial direction of the soft lens 2, it can form a seal or release the seal between the moving block 42 and the connecting ring 41.

[0068] In the initial state, the two moving blocks 42 and the connecting ring 41 are both in the unsealed state, and physiological saline can enter the renal pelvis through the water channel 43 and the connecting ring 41 .

[0069] See also Figure 8 and Figure 12 As shown, bypass holes 222 connected to the instrument channel 21 are respectively opened on the inner walls of the two water inlet channels 22, and the bypass holes 222 and the water inlet holes 221 are staggered, and switching parts 7 fixedly connected to the positioning wire 45 are respectively provided in the two water inlet channels 22. When the switching parts 7 move along the axial direction of the soft mirror 2, the water inlet channel 22 is connected to the water inlet chamber 35 or the instrument channel 21. When the water inlet channel 22 is connected to the water inlet chamber 35, the bypass hole 222 and the instrument channel 21 are in a closed state. Otherwise, the water inlet channel 22 and the water inlet chamber 35 are closed.

[0070] Since the soft mirror 2 is extruded, both ends of it are open, so it is necessary to seal the end of the soft mirror 2 located inside the handle 1. The end of the soft mirror 2 located inside the handle 1 is fixedly connected to a sealing block 8, which can form a seal between the instrument channel 21 and the two water inlet channels 22. The two positioning wires 45 extend out of the sealing block 8 at one end and are connected to the same electromagnetic control component 9, which can drive the two positioning wires 45 to slide alternately along the axial direction of the soft mirror 2.

[0071] See also Figure 12 As shown, the switching member 7 includes a connecting tube 71 that is slidingly connected to the water inlet channel 22. The connecting tube 71 is a cylindrical structure with a single-side opening. The connecting tube 71 has an outer side surface and an inner side surface. An outer hole 72 matching the water inlet hole 221 is provided on the outer side surface, and an inner hole 73 matching the bypass hole 222 is provided on the inner side surface.

[0072] It should be noted that the surfaces and inner walls of the connecting tube 71 and the flexible lens 2 are coated with a lubricating coating.

[0073] See also Figure 13 and Figure 14 As shown, the electromagnetic control component 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 to a connecting disk 92, 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 coaxially slidably connected to the connecting rod 91, a limiter matching the permanent magnet plate 94 is provided on the inner wall of the handle 1, an elastic reset component 95 is provided between the permanent magnet plate 94 and the connecting disk 92, a threaded track 96 is provided on the connecting rod 91, and a connecting block matching the threaded track 96 is provided on the permanent magnet plate 94.

[0074] In this embodiment, the limiting member includes a limiting rod fixedly connected to the inner wall of the handle 1, and a limiting block matching the limiting rod is provided 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 when it moves.

[0075] A power signal line is provided on one side of the handle 1 , and the electromagnet 93 is electrically connected to the power signal line. When the negative pressure device connected to the water pumping interface 12 is started, the electromagnet 93 can be energized periodically.

[0076] On the basis of the above embodiment, when laser lithotripsy is performed, the two moving blocks 42 and the connecting ring 41 are not sealed. When the laser lithotripsy is completed and the operator controls the start of the negative pressure device through the trigger 14, the electromagnet 93 and the negative pressure device are started at the same time. The permanent magnet plate 94 overcomes the elastic reset member 95 under the repulsion of the magnetic force and moves toward the direction of the rotating disk. Under the action of the threaded track 96 and the connecting block, the connecting disk 92 rotates and causes the two positioning wires 45 to move in opposite directions, thereby achieving a loose and tight effect.

[0077] 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 member 44 and forms a seal with it, and the corresponding switching member 7 slides in the water inlet channel 22, and connects the bypass hole 222 with the instrument channel 21 and closes the water inlet hole 221 and the water inlet chamber 35. At this time, the instrument channel 21 is in a negative pressure suction state, and the water inlet channel 22 connected to the instrument channel 21 gradually shrinks under the action of negative pressure.

[0078] As mentioned above, the electromagnet 93 is energized periodically. When the electromagnet 93 is de-energized, the permanent magnet plate 94 is reset under the action of the elastic reset member 95 and causes the rotating disk to rotate in the opposite direction. At this time, the contracted water inlet channel 22 is connected to the water inlet chamber 35, and the moving block 42 in the other water inlet channel 22 forms a seal with the connecting ring 41 and begins to contract under the negative pressure of the instrument channel 21, thereby causing the two water inlet channels 22 to contract alternately.

[0079] To sum up, through the settings of the electromagnetic control component 9, the switching component 7 and the anti-blocking component 4, when the instrument channel 21 starts to perform negative pressure suction, the electromagnetic control component 9 drives one group of moving blocks 42 and the connecting ring 41 in the anti-blocking component 4 to form a seal, and the switching component 7 synchronously connects the corresponding water inlet channel 22 with the instrument channel 21, thereby causing the water inlet channel 22 to shrink under the action of negative pressure. At this time, the volume of the instrument channel 21 and the moving gap formed by the soft mirror 2 and the guide sheath can be expanded, which can not only reduce the problem of blockage of gravel during rolling, but also allow the outer wall of the soft mirror 2 and the inner wall of the instrument channel 21 to dredge the blocked gravel under the alternating contraction of the water inlet channel 22, thereby further reducing the risk of stone blockage.

[0080] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A ureteropelvic endoscope with integrated flushing and suction function, comprising a handle (1) and a flexible endoscope (2), characterized in that: A water inlet interface (11) and a water extraction interface (12) are respectively provided on one side of the handle (1); a connecting tube (3) matching the water inlet interface (11) is provided inside the handle (1); one end of the soft mirror (2) is located inside the connecting tube (3); The soft mirror (2) comprises an instrument channel (21) and two symmetrically arranged water inlet channels (22); the connecting tube (3) and the soft mirror (2) are provided with mutually cooperating fluid circulation structures, which enable the fluid to flow in the instrument channel (21) and the water inlet channels (22) and form a positive and negative pressure fluid circulation; An anti-blocking component (4) is provided in the soft mirror (2). When the water pumping interface (12) pumps water, the anti-blocking component (4) can make the two water inlet channels (22) alternately connected to the instrument channel (21) so that the corresponding water inlet channels (22) contract under negative pressure. The connecting tube (3) has a first interface end (31) and a second interface end (32), the first interface end (31) being in communication with a transparent cup (5) provided on the handle (1), the second interface end (32) being connected to a clamp opening (13) provided on the handle (1), and the transparent cup (5) being connected to the water pumping interface (12) via a pipeline; The fluid circulation structure includes a main channel (33) provided in the connecting tube (3), the soft mirror (2) is coaxially fixed with the main channel (33), three sealing grooves (34) are provided in the main channel (33), and sealing rings are provided 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), and water inlet holes (221) communicating with the water inlet chamber (35) are respectively provided on the side walls of the two water inlet channels (22), and a connecting groove (211) communicating with the water pumping chamber (36) is provided on the side wall of the instrument channel (21); The first interface end (31) and the second interface end (32) are respectively provided with a first flow channel (311) and a second flow channel (321) communicating with the water pumping chamber (36).

2. The ureteropelvic endoscope with flushing and suction function according to claim 1, characterized in that: The end of the soft mirror (2) away from the handle (1) is fixedly connected to a connector (6) matching the handle (1), and the connector (6) is provided with a through hole and two connection holes (61) respectively matching the instrument channel (21) and the water inlet channel (22); The anti-blocking component (4) comprises two connecting rings (41) fixedly connected to the water inlet hole (221), a movable block (42) which is slidably connected to the two connecting holes (61) and forms a sealing fit therewith, a water flow groove (43) being provided on the movable block (42), an elastic member (44) being provided between the connecting ring (41) and the movable block (42), and a positioning wire (45) being fixedly connected to one side of the two movable blocks (42), and when the positioning wire (45) moves along the axial direction of the soft mirror (2), the movable block (42) and the connecting ring (41) can form a seal or release a seal.

3. The ureteropelvic endoscope with flushing and suction function according to claim 2, characterized in that: The inner walls of the two water inlet channels (22) are respectively provided with bypass holes (222) connected to the instrument channel (21), the bypass holes (222) and the water inlet holes (221) are arranged alternately, and the two water inlet channels (22) are respectively provided with switching members (7) fixedly connected to the positioning wire (45), and when the switching members (7) move along the axial direction of the soft mirror (2), the water inlet channel (22) is connected to the water inlet chamber (35) or the instrument channel (21).

4. The flushing and suction integrated ureteropelvic endoscope according to claim 3, characterized in that: One end of the soft mirror (2) located in the handle (1) is fixedly connected to a sealing block (8), and one end of the two positioning wires (45) extending out of the sealing block (8) is connected to the same electromagnetic control component (9), and the electromagnetic control component (9) can drive the two positioning wires (45) to slide alternately along the axial direction of the soft mirror (2).

5. The flushing and suction integrated ureteropelvic endoscope according to claim 4, characterized in that: The switching member (7) comprises 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; the outer side surface is provided with an outer hole (72) matching the water inlet hole (221); and the inner side surface is provided with an inner hole (73) matching the bypass hole (222).

6. The flushing and suction integrated ureteropelvic endoscope according to claim 5, characterized in that: The electromagnetic control component (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 to a connecting disk (92), and 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), and a permanent magnet plate (94) is coaxially slidably connected to the connecting rod (91). A limiting member matching the permanent magnet plate (94) is provided on the inner wall of the handle (1), and an elastic reset member (95) is provided between the permanent magnet plate (94) and the connecting disk (92). A threaded track (96) is provided on the connecting rod (91), and a connecting block matching the threaded track (96) is provided on the permanent magnet plate (94).

7. The flushing and suction integrated ureteropelvic endoscope according to claim 6, characterized in that: A power signal line is provided on one side of the handle (1), and the electromagnet (93) is electrically connected to the power signal line. When the negative pressure device connected to the water pumping interface (12) is started, the electromagnet (93) can be energized periodically.

8. The flushing and suction integrated ureteropelvic endoscope according to claim 7, characterized in that: A trigger (14) and a lever (15) are provided on one side of the handle (1); a connecting wire (16) cooperating with the lever (15) is provided inside the handle (1); both ends of the connecting wire (16) are respectively fixedly connected to one end of the soft mirror (2) away from the handle (1); The water inlet interface (11) and the water extraction interface (12) are respectively connected to positive and negative pressure devices. A contact piece (17) cooperating with the trigger (14) is provided 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 extraction interface (12).

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