Ureteroscopy for suction and injection

Abstract

Disclosed is a ureteroscope for suction-and-strike operation, wherein the ureteroscope for suction-and-strike operation comprises: a tube scope body, an operating part operably arranged on the tube scope body, and a lithotripsy mechanism. The tube scope body comprises a tube structure body and a suction channel extending from the front end to the rear end in the tube structure body, wherein the suction channel has a suction port located at the front end. The lithotripsy mechanism is movably arranged in the tube structure body to switch between a first state and a second state, wherein when in the first state, the cutting head of the lithotripsy mechanism extends out of the suction port to hit the calculi, and when in the second state, the cutting head of the lithotripsy mechanism retracts to the suction port to hit the calculi blocked in the suction port. The ureteroscope for suction-and-strike operation prevents the crushed calculi from being blocked in the suction port by the "suction-and-strike" method.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a ureteroscope for suction-injection surgery. Background Art

[0002] In recent years, ureteroscopes have been widely used in the treatment of urinary tract stone diseases. Specifically, ureteroscopes can be inserted from the urethra into the ureter or kidney. Medical workers can use ureteroscopes in conjunction with image acquisition equipment, lighting equipment and other equipment to observe the situation in the kidney and break up stones at the target location.

[0003] In actual applications, when the stone is large in size, it is difficult to pulverize the stone after the traditional ureteroscope breaks it into fragments with an equivalent diameter of about 2 mm, and it is difficult to guide the fragments out of the patient's body through an effective guide mechanism. Therefore, after the stone is broken by the traditional ureteroscope, 60%-90% of the fragments remain in the kidneys, and it is difficult to be discharged from the body in time by natural excretion, which leads to a low excretion rate of the fragments. The remaining fragments may form stone streets in the ureter and block the ureter. The residual fragments are one of the main reasons for the high recurrence rate of stones.

[0004] In order to solve this problem, a ureteroscope design that can remove lithotripsy has been proposed. In this design, the ureteroscope is provided with a lithotripsy discharge mechanism to promptly discharge the lithotripsy out of the body. However, in actual use, lithotripsy is prone to blockage in the discharge mechanism of the ureteroscope and is difficult to be discharged from the patient's body.

[0005] Therefore, a new stone removal scheme is needed to avoid blockage of the stones during the removal process. Summary of the invention

[0006] One advantage of the present application is that it provides a suction-and-beat type ureteroscope, wherein the suction-and-beat type ureteroscope can avoid blockage of the suction port by the crushed stones by the "suction-and-beat" method.

[0007] Another advantage of the present application is that it provides a ureteroscope for suction-and-strike surgery, wherein the lithotripsy mechanism of the ureteroscope can not only strike stones formed in the kidneys, but also strike the stones at the suction port of the suction channel for extracting the stones, so as to avoid the crushed stones from clogging the suction port.

[0008] Another advantage of the present application is that it provides a ureteroscope for suction-and-impulse surgery, wherein the ureteroscope for suction-and-impulse surgery can remove the crushed stones relatively quickly to improve the efficiency of stone removal.

[0009] Another advantage of the present application is that it provides a suction-and-strike ureteroscope, wherein when the crushed stones are attracted to the suction port, the lithotripsy mechanism also located at the suction port can accurately strike the crushed stones.

[0010] Another advantage of the present application is that it provides a ureteroscope for suction-assisted surgery, wherein when the crushed stones are stuck in the suction port, the position of the crushed stones is relatively stable, and the stone crushing mechanism located at the suction port can crush the stones more easily.

[0011] Another advantage of the present application is that a suction-and-injection ureteroscope is provided, wherein, through the reasonable arrangement of the infusion port of the infusion channel and the suction port of the suction channel, the design flexibility of the suction port and the infusion port is relatively improved, and the sizes of the suction port and the infusion port can be relatively increased, which makes it easier for the stones to pass through to prevent the stones from clogging the suction-and-injection ureteroscope.

[0012] Other advantages and features of the present application will become apparent from the following description, and may be achieved by the means and combinations particularly pointed out in the claims.

[0013] To achieve at least one of the above advantages, according to one aspect of the present application, the present application provides a suction-injection ureteroscope, which includes:

[0014] A tube scope body having a front end portion and a rear end portion, an operating portion operably coupled to the rear end portion of the tube scope body, and a lithotripsy mechanism;

[0015] The tube mirror body comprises: a tube structure body; at least one perfusion channel extending from the rear end portion to the front end portion in the tube structure body, the at least one perfusion channel having at least one perfusion port located at the front end portion; and a suction channel extending from the front end portion to the rear end portion in the tube structure body, the suction channel having a suction port located at the front end portion;

[0016] The stone crushing mechanism can be movably arranged in the tube structure body to switch between a first state and a second state, wherein, when in the first state, the cutting head of the stone crushing mechanism extends out of the suction port to hit the stones, and when in the second state, the cutting head of the stone crushing mechanism retracts into the suction port to hit the stones blocking the suction port.

[0017] In the ureteroscope for suction-injection surgery according to the present application, the scope body further includes a lithotripsy channel connected to the suction channel, the lithotripsy mechanism is telescopically arranged in the lithotripsy channel, and when the lithotripsy mechanism is in a first state, the cutting head extends through the lithotripsy channel into the suction channel to extend out of the suction port.

[0018] In the ureteroscope for suction-injection surgery according to the present application, the lithotripsy channel includes: a main body section and a connecting section extending between the main body section and the suction channel, and the connecting section is connected to the suction channel and the main body section.

[0019] In the ureteroscope for suction-injection surgery according to the present application, the angle between the central axis of the connecting section and the central axis of the suction channel is 0°-45°.

[0020] In the ureteroscope for suction-injection surgery according to the present application, the tube structure body has a front end face and an outer peripheral surface, and the suction port is formed on the front end face, wherein the front end face of the tube structure body extends forward obliquely from a first side of the outer peripheral surface to a second side opposite to the first side along the axial direction set by the tube diameter body.

[0021] In the ureteroscope for suction-and-punch surgery according to the present application, when the lithotripsy mechanism is in the second state, the cutting head of the lithotripsy mechanism is located in the middle area of ​​the suction port.

[0022] In the ureteroscope for suction-injection surgery according to the present application, when the lithotripsy mechanism is in the second state, the front end of the cutting head of the lithotripsy mechanism is flush with the front end surface.

[0023] In the ureteroscope for suction-assisted surgery according to the present application, the lithotripsy channel is located on the side of the suction channel.

[0024] In the ureteroscope for suction-in-pull surgery according to the present application, the lithotripsy channel extends between the suction channel and the rear end of the scope body, and the lithotripsy channel has a communication port connected to the suction channel.

[0025] In the ureteroscope for suction-injection surgery according to the present application, the operating part includes a first operating end connected to the irrigation channel, a second operating end connected to the suction channel, and a third operating end connected to the lithotripsy channel.

[0026] In the ureteroscope for suction-injection surgery according to the present application, the irrigation port of the irrigation channel has a first orientation to allow the fluid to be injected into the renal pelvis from the irrigation port along the irrigation channel in a first direction pointed by the first orientation, and the suction port of the suction channel has a second orientation that forms a preset angle with the first orientation to allow the fluid to be turned in the renal pelvis and then be sucked into the suction channel from the suction port in a second direction pointed by the second orientation to form a fluid loop.

[0027] In the ureteroscope for suction-injection surgery according to the present application, the tube structure body has a front end face and an outer peripheral surface formed on the front end face, the irrigation port is formed on the outer peripheral surface of the tube structure body, and the suction port is formed on the front end face of the tube structure body.

[0028] Further objectives and advantages of the present application will be fully reflected through understanding of the following description and drawings.

[0029] These and other objects, features and advantages of the present application are fully reflected in the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0031] Figure 1 The figure shows a working schematic diagram of an existing ureteroscope.

[0032] Figure 2 The figure shows a schematic diagram of a ureteroscope for suction-injection surgery according to an embodiment of the present application.

[0033] Figure 3 Another schematic diagram of a ureteroscope for suction-injection surgery according to an embodiment of the present application is illustrated.

[0034] Figure 4 The figure shows a schematic diagram of the ureteroscope body of the suction-injection ureteroscope according to an embodiment of the present application.

[0035] Figure 5A The figure shows one of the partial schematic diagrams of the ureteroscope body of the suction-injection ureteroscope according to an embodiment of the present application.

[0036] Figure 5B The figure shows a second partial schematic diagram of the ureteroscope body of the suction-injection ureteroscope according to an embodiment of the present application.

[0037] Figure 5C The figure shows a third partial schematic diagram of the ureteroscope body of the suction-injection ureteroscope according to an embodiment of the present application.

[0038] Figure 5D The figure shows a fourth partial schematic diagram of the ureteroscope body of the suction-injection ureteroscope according to an embodiment of the present application.

[0039] Fig. 6AThe figure shows a partial cross-sectional schematic diagram of the ureteroscope body of the suction-injection ureteroscope according to an embodiment of the present application.

[0040] Figure 6B The figure shows a partial three-dimensional schematic diagram of the ureteroscope body of the suction-injection ureteroscope according to an embodiment of the present application.

[0041] Fig. 7A The figure shows a partial cross-sectional schematic diagram of the ureteroscope body of a ureteroscope for suction-injection surgery according to a variation of an embodiment of the present application.

[0042] Figure 7B The figure shows a partial three-dimensional schematic diagram of the ureteroscope body of a ureteroscope for suction-injection surgery according to a variation of an embodiment of the present application.

[0043] Fig. 8A The figure shows a partial cross-sectional schematic diagram of the ureteroscope body of a ureteroscope for suction-injection surgery according to another variation of the embodiment of the present application.

[0044] Figure 8B The figure shows a partial three-dimensional schematic diagram of the ureteroscope body of the suction-injection ureteroscope according to another variant of the embodiment of the present application.

[0045] Fig.9A The figure shows a partial cross-sectional schematic diagram of the ureteroscope body of a ureteroscope for suction-injection surgery according to another modified embodiment of the present application.

[0046] Fig. 9B The figure shows a partial three-dimensional schematic diagram of the ureteroscope body of a ureteroscope for suction-injection surgery according to another modified embodiment of the present application.

[0047] Fig.10 The figure shows another partial cross-sectional schematic diagram of the ureteroscope body of the suction-injection ureteroscope according to the embodiment of the present application.

[0048] Fig.11A The figure illustrates one of the working process schematic diagrams of the ureteroscope for suction-injection surgery according to an embodiment of the present application.

[0049] Fig. 11B The figure shows the second schematic diagram of the working process of the ureteroscope for suction-injection surgery according to an embodiment of the present application.

[0050] Fig. 11C The figure shows the third schematic diagram of the working process of the ureteroscope for suction-injection surgery according to an embodiment of the present application.

[0051] Fig.11D The figure shows a fourth schematic diagram of the working process of the ureteroscope for suction-injection surgery according to an embodiment of the present application. DETAILED DESCRIPTION

[0052] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0053] Application Overview

[0054] As mentioned above, when the stone is large in size, it is difficult to pulverize the stone after the traditional ureteroscope breaks it into fragments with an equivalent diameter of about 2 mm, and it is difficult to guide the fragments out of the patient's body through an effective guide mechanism. The residual fragments are one of the main reasons for the high recurrence rate of stones.

[0055] In this design, the ureteroscope is provided with a lithotripsy mechanism to promptly discharge the lithotripsy out of the body. However, in actual use, the lithotripsy is prone to blockage in the discharge mechanism of the ureteroscope and is difficult to be discharged out of the patient's body.

[0056] Specifically, in order to remove the crushed stones, some ureteroscopes use the principle of negative pressure suction to attract the crushed stones to the discharge channel, and then discharge them out of the body through the discharge channel. Taking the removal of stones in the renal pelvis by ureteroscope as an example, Figure 1 As shown, first, the optical fiber used to crush the stone can extend from the front end of the ureteroscope and emit laser, and the laser can generate a strong impact force. Then, the laser acts on the stone. Since the stone is embedded in the renal pelvis, the stone is resisted by the kidney after receiving the impact force, and it is difficult to move backward. Therefore, it bears most of the energy of the laser and is crushed. However, the newly crushed stone is in a movable state. When the laser acts on the crushed stone (i.e., the stone), because the crushed stone is not fixed, it will be bounced after receiving the impact force, which makes it difficult for the crushed stone to be further crushed. Then, the crushed stone will be attracted to the discharge inlet of the discharge channel. When the larger crushed stone is attracted to the discharge inlet of the discharge channel or a large number of crushed stones rush to the discharge inlet at the same time, it will be blocked at the discharge inlet, making it difficult for the crushed stone to be discharged.

[0057] The inventor of the present application has proposed a "sucking and hitting" stone extraction scheme, which prevents the crushed stones from being blocked at the suction port of the suction channel where the crushed stones can be extracted by coordinating the suction and hitting of the crushed stones. Specifically, while the crushed stones are sucked to the suction port by the negative pressure in the suction channel, the crushed stones are further hit by the stone crushing mechanism located at the suction port.

[0058] Based on this, the present application proposes a ureteroscope for suction-and-strike surgery, which includes: a tube mirror body having a front end and a rear end, including: a tube structure body; at least one perfusion channel extending from the rear end to the front end in the tube structure body, the at least one perfusion channel having at least one perfusion port located at the front end; and a suction channel extending from the front end to the rear end in the tube structure body, the suction channel having a suction port located at the front end; an operating portion operably coupled to the rear end of the tube mirror body; and a lithotripsy mechanism, which is movably arranged in the tube structure body to switch between a first state and a second state, wherein, when in the first state, the cutting head of the lithotripsy mechanism extends out of the suction port for striking stones, and when in the second state, the cutting head of the lithotripsy mechanism retracts to the suction port for striking stones blocked in the suction port.

[0059] Exemplary Ureteroscope

[0060] like Figures 2 to 11D As shown, the suction-in-situ ureteroscope 100 according to an embodiment of the present application is illustrated. For the sake of convenience, the suction-in-situ ureteroscope 100 is described by taking the suction-in-situ ureteroscope 100 used for treating stones c in the renal pelvis p as an example.

[0061] The suction-and-strike ureteroscope 100 can be used to examine the condition of the kidney, break up the stones c in the renal pelvis p, and guide the broken stones (i.e., lithotripsy) to be discharged. In the embodiment of the present application, the suction-and-strike ureteroscope 100 includes a tube mirror body 10 having a front end 110 and a rear end 120, an operating part 20 operably coupled to the rear end 120 of the tube mirror body 10, and a lithotripsy mechanism 30 for striking stones.

[0062] In actual application, the laparoscope body 10 as the insertion part of the suction-injection ureteroscope 100 can be extended from the urethra into the ureter or the kidney. An image acquisition device 300 and a light source 400 can be arranged on the laparoscope body 10 to take images of the kidney and the stones in the kidney. Preferably, the laparoscope body 10 has a smooth outer surface, or the outer surface of the laparoscope body 10 is smooth after entering the patient's body, so that the laparoscope body 10 can smoothly enter the kidney. Figure 2As shown, the operating unit 20, as a bridge connecting the suction-in-shot ureteroscope 100 with external devices, can be communicatively connected to the image output device 500 (for example, a computer communicatively connected to the image acquisition device 300) to obtain images of the kidney, thereby facilitating the user to observe the condition of the stone c in the renal pelvis p. In addition, the operable components (for example, the lithotripsy mechanism 30, the guide mechanism 600, the injection device 700, the suction device 800) can perform other functional operations through the operating unit 20. For example, the stone c in the renal pelvis p is struck by a holmium laser that enters the ureteroscope body 10 through the operating unit 20, and for another example, the lithotripsy in the kidney is attracted by the suction device 800 that is connected to the ureteroscope body 10 through the operating unit 20.

[0063] Specifically, the tube mirror body 10 includes a tube structure body 11, at least one perfusion channel 12, and a suction channel 13. Figure 4 As shown. The at least one perfusion channel 12 extends from the rear end 120 to the front end 110 in the tube structure body 11, and the suction channel 13 extends from the front end 110 to the rear end 120 in the tube structure body 11. In addition, preferably, the perfusion channel 12 and the suction channel 13 are independent of each other, so that the fluid is guided through the perfusion channel 12 to reach the kidney to impact the lithotripsy and the fluid carrying the lithotripsy is attracted to the suction channel 13 at the same time, and the impact of the lithotripsy and the attraction of the lithotripsy are avoided. Interference between the impact of the lithotripsy and the attraction of the lithotripsy is avoided.

[0064] The at least one perfusion channel 12 has at least one perfusion port 121 located at the front end portion 110 and at least one first operation port 122 connected to the at least one perfusion port 121. Fluid can reach the kidney from the perfusion port 121 and impact the broken stones in the kidney. The suction channel 13 has a suction port 131 located at the front end portion 110 and a second operation port 132 connected to the suction port 131. The broken stones can be attracted to the suction port 131 and enter the suction channel 13 from the suction port 131 to be discharged through the suction channel 13.

[0065] Accordingly, the operation part 20 includes an operation body 21, a first operation end 22 provided on the operation body 21 and connected to the perfusion channel 12, and a second operation end 23 provided on the operation body 21 and connected to the suction channel 13. The operation part 20 is connected to the perfusion channel 12 through the first operation end 22 connected to the first operation port 122, and is connected to the suction channel 13 through the second operation end 23 connected to the second operation port 132. The first operation end 22 is suitable for connecting to the injection device 700, and allows the injection device 700 to inject fluid into the renal pelvis p through the perfusion channel 12 to impact the lithotripsy, and the second operation end 23 is suitable for connecting to the suction device 800 (for example, an air pump), and allows the suction device 800 to suck the fluid and lithotripsy near the suction channel 13 through the suction channel 13. In order to control the negative pressure in the suction channel 13, in a specific embodiment of the present application, the operating unit 20 further includes a negative pressure regulator 27, and the negative pressure regulator 27 is configured to adjust the air pressure in the suction channel 13, such as Figure 3 and Figure 4 shown.

[0066] It should be understood that the functions of the first operating end 22 and the second operating end 23 are not limited to the present application. The first operating end 22 and the second operating end 23 are also suitable for allowing other devices to perform other functional operations. For example, the first operating end 22 is suitable for allowing the guide mechanism 600 to pass through the perfusion channel 12 and guide the tube mirror body 10 to reach the target position. It should also be understood that the operating portion 20 may also include other operating ends to allow other devices to perform other functional operations.

[0067] In particular, in the embodiment of the present application, the suction channel 13 not only allows the crushed stones to be attracted to the suction port 131 thereof, but also allows the cutting head 32 of the crushing mechanism 30 to extend out of the suction port 131 or retract to the suction port 131 to hit the crushed stones blocking the suction port 131. Specifically, the crushing mechanism 30 includes a crushing body 31 and a cutting head 32 formed in the crushing body 31, and the crushing mechanism 30 is movably arranged in the pipe structure body 11 to switch between a first state and a second state. When the crushing mechanism 30 is in the first state, the cutting head 32 of the crushing mechanism 30 extends out of the suction port 131 to hit the crushed stones, and when the crushing mechanism 30 is in the second state, the cutting head 32 of the crushing mechanism 30 retracts to the suction port 131 to hit the crushed stones blocking the suction port 131. That is, the lithotripsy mechanism 30 can not only be used to strike the stones c formed in the renal pelvis p, but also can further strike the broken stones that are blocked in the passage for guiding out the stones.

[0068] It is worth mentioning that when the stone crushing mechanism 30 is in the first state, the stone crushing mechanism 30 extends from the suction port 131, and the crushed stones are opposite to the suction port 131 and are more easily attracted to the suction port 131, which can improve the stone extraction efficiency.

[0069] In actual application, some crushed stones are large in size and will block the suction port 131 when reaching the suction port 131, making it difficult to be discharged and hindering other crushed stones from being discharged, affecting the discharge efficiency of stones, and therefore need to be further crushed. However, the newly crushed stones are in a movable state. When the crushing mechanism 30 is used to hit the movable crushed stones, on the one hand, the position of the movable crushed stones is constantly changing, making it difficult for the crushing mechanism 30 to aim. On the other hand, as mentioned above, since the crushed stones are not fixed, they will be bounced off after being impacted, making it difficult for the crushed stones to be discharged.

[0070] In the embodiment of the present application, the attraction of crushed stones and the striking of crushed stones can cooperate with each other to achieve accurate striking of crushed stones and improve the efficiency of stone extraction. Specifically, the crushed stones can be attracted to the suction port 131, and the crushing mechanism 30 can be switched to the second state, that is, retracted to the suction port 131, and then the crushed stones also located at the suction port 131 are accurately struck, and the crushed stones can enter the suction channel 13 through the suction port 131, and then be extracted from the body. In addition, the crushed stones blocked in the suction port 131 are stuck in the suction port 131, and the position is relatively stable. In the process of the crushing mechanism 30 striking the crushed stones, the crushed stones are against the inner peripheral wall of the suction channel 13. When the impact force generated by the crushing mechanism 30 acts on the crushed stones, the crushed stones will bear most of the energy generated by the crushing mechanism 30, so they are easier to be crushed. In this way, the crushed stones can be extracted relatively quickly to improve the efficiency of stone extraction.

[0071] When too much gravel is attracted to the suction port 131 at the same time, the suction port 131 will be blocked. The gravel crushing mechanism 30 can also be switched to the second state to crush at least part of the gravel or disperse multiple gravel, so that the suction port 131 remains open, so that the gravel can quickly pass through the suction port 131 into the suction channel 13, and then be discharged out of the body, so as to improve the efficiency of stone discharge.

[0072] It is worth mentioning that the type of the lithotripsy mechanism 30 is not limited by the present application, and the lithotripsy mechanism 30 can be implemented as a holmium laser or other types of tools capable of striking the stone c. The holmium laser can emit laser light, and the energy generated by the holmium laser can cause the water between the stone c and the holmium laser to form micro-cavitation bubbles, and transfer the energy to the stone c to strike the stone c. In the process of the holmium laser striking the stone c, the water absorbs a large amount of energy, which can reduce the damage of the holmium laser to the tissue around the stone c.

[0073] Furthermore, the tube mirror body 10 further includes a stone crushing channel 14 connected to the suction channel 13, and the stone crushing mechanism 30 is telescopically arranged in the stone crushing channel 14. When the stone crushing mechanism 30 is in the first state, the cutting head 32 passes through the stone crushing channel 14 and extends to the suction channel 13 to extend out of the suction port 131, that is, the cutting head 32 of the stone crushing mechanism 30 can enter the suction channel 13 along the stone crushing channel 14 and extend out of the suction port 131.

[0074] In the embodiment of the present application, the gravel channel 14 extends between the suction channel 13 and the rear end portion 120 of the tube mirror body 10, and the gravel channel 14 has a connecting port 141 connected to the suction channel 13 and a third operating port 142 connected to the connecting port 141 and located at the rear end portion 120.

[0075] Correspondingly, the operating part 20 further includes a third operating end 24 connected to the lithotripsy channel 14, and the operating part 20 is connected to the lithotripsy channel 14 through the third operating end 24 connected to the third operating port 142. The third operating end 24 allows the lithotripsy mechanism 30 to pass through and enter the lithotripsy channel 14 and the suction channel 13 connected to the lithotripsy channel 14 from the third operating port 142 connected thereto. In other words, the lithotripsy mechanism 30 can enter the lithotripsy channel 14 and the suction channel 13 connected to the lithotripsy channel 14 from the third operating port 142 through the third operating end 24 of the operating part 20, and then enter the kidney to strike the stone c.

[0076] In the embodiment of the present application, the stone crushing channel 14 includes a main body section 143 and a connecting section 144 extending between the main body section 143 and the suction channel 13, the connecting section 144 has the connecting port 141 connected to the suction channel 13, and is connected to the suction channel 13 through the connecting port 141, and the connecting section 144 extends obliquely upward from the main body section 143 to the suction channel 13 along a preset direction. In a specific example of the present application, the angle between the preset extension direction and the central axis of the suction channel 13 is 0°-45°. Correspondingly, the angle between the central axis of the connecting section 144 and the central axis of the suction channel 13 is 0°-45°, and the cutting head 23 of the stone crushing mechanism 30 can extend into the suction port 131 along the connecting section 144 at a direction inclined at 45° relative to the central axis of the suction channel 13. It should be understood that the steeper the connecting section 144 is, the closer its central axis is to coincide with the central axis of the suction channel 13, and the faster the stone crushing mechanism 30 passes through the suction channel 13 and extends out of the suction port 131. The angle between the connecting section 144 and the central axis of the suction channel 13 may also be other angles, for example, 30°, 60°, which is not limited to the present application.

[0077] Further, in this specific example, when the stone crushing mechanism 30 is in the second state, the cutting head 32 of the stone crushing mechanism 30 is located in the middle area of ​​the suction port 131. Specifically, during the process of the stone crushing mechanism 30 switching from the first state to the second state, the stone crushing mechanism 30 can be retracted along the connecting section 144 in the opposite direction of the preset direction, and when the stone crushing mechanism 30 is retracted to the suction port 131, the cutting head 32 of the stone crushing mechanism 30 is located in the middle area of ​​the suction port 131.

[0078] It is worth mentioning that the position where the crushed stone blocked in the suction port 131 abuts against the inner peripheral wall of the suction channel 13 is uncertain. When the crushed stone is struck from the peripheral area of ​​the suction port 131 formed around the middle area, the crushed stone may still be stuck in the suction port 131, and the crushing efficiency is low. For example, the first position and the second position of the crushed stone respectively abut against the inner peripheral wall forming the first peripheral area and the inner peripheral wall forming the second peripheral area, and then are stuck in the suction port 131. When the crushing mechanism 30 strikes the first position of the crushed stone from the first peripheral area or strikes the second position of the crushed stone from the second peripheral area, the crushed stone at the first position or the second position may detach from the suction port 131 and enter the suction channel 13. However, when the crushing mechanism 30 strikes the crushed stone at the position suspended in the suction port 131, the first position or the second position of the crushed stone may still abut against the inner peripheral wall and be stuck in the suction port 131. When the stone crushing mechanism 30 hits the stone from the middle area of ​​the suction port 131, the middle position of the stone corresponding to the middle area of ​​the suction port 131 is crushed, and the stone will be separated from the suction port 131. Therefore, preferably, when the stone crushing mechanism 30 is in the second state, the cutting head 32 of the stone crushing mechanism 30 is located in the middle area of ​​the suction port 131. It should be understood that when the stone crushing mechanism 30 is in the second state, the cutting head 32 of the stone crushing mechanism 30 can also be located at other positions of the suction port 131, which is not limited by the present application.

[0079] In this specific example, the tube structure body 11 has a front end face 1101 and an outer peripheral face 1102 formed on the outer peripheral side of the front end face 1101, and the front end face 1101 of the tube structure body 11 extends obliquely forward along the axial direction set by the tube mirror body 10 from a first side of the outer peripheral face 1102 to a second side opposite to the first side. For example, the front end face 1101 of the tube structure body 11 extends obliquely forward along the axial direction set by the tube mirror body 10 from a lower side set by the outer peripheral face 1102 to an upper side opposite to the lower side, as shown in FIG. Figure 5A shown.

[0080] Specifically, the front end face 1101 can be designed as a convex inclined surface, a concave inclined surface, a corrugated inclined surface, or other types of inclined surfaces formed between the first side and the second side of the outer peripheral surface 1102, which is not limited by the present application. In a specific example of the present application, the front end face 1101 is designed as a corrugated inclined surface that is concave in the middle between the first side and the second side of the outer peripheral surface 1102.

[0081] It should be understood that in other embodiments, the front end face 1101 of the tube structure main body 11 can also be designed as the front end face 1101 of the tube structure main body 11 extends flush along the axial direction set by the tube mirror body 10 from the first side of the outer peripheral surface 1102 to the second side opposite to the first side (that is, the end of the front end face 1101 close to the first side of the suction channel 13 is flush with the end of the second side of the suction channel 13 in the axial direction set by the tube mirror body 10), which is not limited to the present application.

[0082] Further, the suction port 131 is formed on the front end surface 1101, and the suction port 131 extends obliquely forward along the axial direction set by the tube mirror body 10 from the first side of the suction channel 13 to the second side opposite to the first side, wherein the first side of the outer peripheral surface 1102 corresponds to the first side of the suction channel 13, and the second side of the outer peripheral surface 1102 corresponds to the second side of the suction channel 13. Accordingly, the shape of the suction port 131 is approximately elliptical. When the stone crushing mechanism 30 is in the second state, the front end of the cutting head 32 of the stone crushing mechanism 30 is flush with the surface formed by the outer edge of the suction port 131. The outer edge of the suction port 131 refers to the inner peripheral edge of the inner peripheral wall of the suction channel 13. Accordingly, when the suction port 131 is formed on the front end surface 1101, the front end of the cutting head 32 is flush with the front end surface 1101.

[0083] It is worth mentioning that when the front end face 1101 is designed to extend obliquely forward from the first side to the second side of the outer peripheral surface 1102 along the axial direction set by the tube mirror body 10, a relatively large distribution space can be provided for the suction port 131. Accordingly, the size of the suction port 131 is relatively increased, which can allow more gravel to pass through the suction channel 13, thereby avoiding gravel blocking the suction port 131 and improving the efficiency of stone removal.

[0084] In the embodiment of the present application, the gravel channel 14 is formed on the side of the suction channel 13. For example, the gravel channel 14 can be formed on the first side of the suction channel 13. Fig. 6A and 6B It may also be formed on a second side of the suction channel 13 opposite to the first side, such as Fig. 7A and 7B It can also be formed on a third side between the first side and the second side of the suction channel 13, such as Fig. 8A and Figure 8B Alternatively, it may be formed on a fourth side of the suction channel 13 opposite to the third side, such as Fig.9A and Fig. 9B shown.

[0085] When the front end face 1101 and the suction port 131 are designed as follows: the front end face 1101 extends obliquely forward from the first side of the outer peripheral surface 1102 to the second side opposite to the first side along the axial direction set by the tube mirror body 10, and the suction port 131 extends obliquely forward from the first side of the suction channel 13 to the second side opposite to the first side along the axial direction set by the tube mirror body 10, the overall shape of the suction port 131 is close to an ellipse, and the suction port 131 is provided with a major axis L1 and a minor axis L2, and the suction port 131 has a first endpoint 11011 and a second endpoint 11012 located on the major axis L1, and a third endpoint 11013 and a fourth endpoint 11014 located on the minor axis L2. The first endpoint 11011 and the second endpoint 11012 are opposite to each other, and the first endpoint 11011 of the front end surface 1101 is rearward relative to the second endpoint 11012, that is, the first endpoint 11011 is located behind the second endpoint 11012. The third endpoint 11013 and the fourth endpoint 11014 are opposite to each other, and are both located between the first endpoint 11011 and the second endpoint 11012.

[0086] The first side refers to a side close to the first end point 11011, the second side refers to a side close to the second end point 11012, the third side refers to a side close to the third end point 11013, and the fourth side refers to a side close to the fourth end point 11014. It should be understood that the gravel channel 14 can be formed on other sides of the suction channel 13, for example, a fifth side between the first side and the third side, which is not limited by the present application.

[0087] It is worth mentioning that the gravel channel 14 is formed on the side of the suction channel 13, and the gravel crushing mechanism 30 is telescopically arranged in the gravel channel 14. When the gravel crushing mechanism 30 is in the first state or the second state, only the front part of the gravel crushing mechanism 30 including the cutting head 32 is located in the suction channel 13, and the rear part of the gravel crushing mechanism 30 is located in the gravel channel 14, and does not occupy the space in the suction channel 13. In this way, the gravel crushing mechanism 30 can be prevented from affecting the gravel passing through the suction channel 13.

[0088] In a modified implementation of the embodiment of the present application, the gravel channel 14 may be formed in the suction channel 13 or in other channels of the tube structure body 11 , which is not limited to the present application.

[0089] In the embodiment of the present application, the formation method of the perfusion channel 12, the suction channel 13 and the gravel channel 14 is not limited by the present application. The perfusion channel 12, the suction channel 13 and the gravel channel 14 can be formed by a plurality of holes of the tube structure main body 11 itself, or can be formed by a plurality of hollow tube bodies, which is not limited by the present application.

[0090] In actual application, after the endoscopic body 10 is inserted into the kidney, the lithotripsy mechanism 30 (for example, holmium laser) can pass through the endoscopic body 10 to reach the kidney and hit the stone c. During the process of the holmium laser hitting the stone c, the perfusion channel 12 can guide the fluid to be ejected from the perfusion port 121 thereof to impact the lithotripsy and move the lithotripsy. The air pressure in the suction channel 13 is in a negative pressure state, so when the fluid moves the lithotripsy to a position close to the suction port 131, the fluid and the lithotripsy are attracted to the suction channel 13, and the fluid may be disturbed by the suction force in the suction channel 13 during the process of impacting the lithotripsy.

[0091] In particular, in some specific examples of the present application, the suction interference on the fluid is reduced by adjusting the relative position relationship between the perfusion port 121 and the suction port 131 and controlling the flow direction of the fluid, thereby improving the efficiency of stone removal. The perfusion port 121 of the perfusion channel 12 has a first orientation, so as to allow the fluid to be injected into the renal pelvis p from the perfusion port 121 along the perfusion channel 12 in a first direction pointed by the first orientation, and the suction port 131 of the suction channel 13 has a second orientation at a preset angle to the first orientation, so as to allow the fluid to be turned in the renal pelvis p and then sucked into the suction channel 13 from the suction port 131 in a second direction pointed by the second orientation to form a fluid loop, such as Fig.10 shown.

[0092] The second direction is different from the first direction, and the first direction is the same as the first direction, and the second direction is opposite to the second direction, so that the angle between the first direction and the second direction is not 0° or 180°, that is, the first direction and the second direction are not in the same direction, nor are they in opposite directions. In this way, the fluid emitted from the injection port 121 along the first direction flows back along the second direction that has an angle with the first direction after turning, forming a vortex-like fluid loop, which can prevent the fluid from being emitted from the injection port 121 along the first direction and then directly flowing back in the opposite direction of the first direction to the suction port 131 in the same direction as the injection port 121, thereby reducing the interference of the negative pressure in the suction channel 13 on the fluid.

[0093] It is worth mentioning that in other specific examples of the present application, the first orientation and the second orientation may be the same, and the first direction and the second direction may also be in the same direction or in opposite directions, which is not limited by the present application.

[0094] In an embodiment of the present application, the angle between the first direction and the second direction is greater than or equal to 90° and less than 180°. In a specific example, the second direction is parallel to or infinitely close to the axial direction set by the tube mirror body 10, and the angle between the first direction and the axial direction or radial direction set by the tube mirror body 10 is greater than 0° and less than or equal to 90°. Accordingly, the angle between the first direction and the second direction is greater than or equal to 90° and less than 180°. In another specific example, the first direction is parallel to or infinitely close to the axial direction set by the tube mirror body 10, and the angle between the second direction and the axial direction is greater than 0° and less than or equal to 90°. Accordingly, the angle between the first direction and the second direction is greater than or equal to 90° and less than 180°.

[0095] In a specific embodiment of the present application, the angle between the central axis of the injection port 121 and the central axis of the suction port 131 is greater than 0° and less than or equal to 90°, so that the first direction and the second direction form a preset angle.

[0096] In the embodiment of the present application, the infusion port 121 and the suction port 131 are not flush in the axial direction set by the endoscope body 10. In this way, the distance between the infusion port 121 and the suction port 131, as well as the movement path of the fluid, can be extended, which can not only reduce the suction interference of the negative pressure in the suction channel 13 on the fluid, but also, because the area through which the fluid flows is wider, the fluid can entrain relatively more gravel on the movement path of the fluid, which can improve the efficiency of stone extraction.

[0097] Here, the infusion port 121 and the suction port 131 are not flush in the axial direction set by the tube mirror body 10, which means that there is a height difference between the infusion port 121 and the suction port 131 in the axial direction, and the distances between the infusion port 121 and the suction port 131 and the front end point located at the front of the tube mirror body 10 are different. In a specific example, the distance between the infusion port 121 and the front end point of the tube mirror body 10 is greater than the distance between the suction port 131 and the front end point of the tube mirror body 10, that is, the suction port 131 is located in front of the infusion port 121 in the axial direction set by the tube mirror body 10, and the suction port 131 is closer to the front end point of the tube mirror body 10 than the infusion port 121. In another specific example, the distance between the perfusion port 121 and the front end point of the endoscope body 10 is smaller than the distance between the suction port 131 and the front end point of the endoscope body 10, that is, the perfusion port 121 is located in front of the suction port 131, and the perfusion port 121 is closer to the front end point of the endoscope body 10 than the suction port 131.

[0098] In a modified implementation of the embodiment of the present application, the infusion port 121 and the suction port 131 may be flush in the axial direction set by the tube mirror body 10, which is not limited by the present application.

[0099] In the embodiment of the present application, the infusion port 121 and the suction port 131 are two openings isolated from each other. In some embodiments of the present application, the infusion port 121 and the suction port 131 are located on two different surfaces.

[0100] In a specific example of the present application, the injection port 121 is formed on the outer peripheral surface 1102 of the tube structure body 11, and the suction port 131 is formed on the front end surface 1101 of the tube structure body 11. FIG. 5A to FIG. 5D In this way, the infusion port 121 is open to the side, and the suction port 131 is open to the front, and the fluid is injected into the renal pelvis p from the infusion port 121 formed on the outer peripheral surface 1102 of the tube structure body 11 in the first direction, and after being turned, it needs to bypass the outer peripheral surface 1102 and be sucked into the suction channel 13 from the suction port 131 in the second direction, forming a vortex-type fluid loop, which can reduce the suction interference on the fluid.

[0101] In particular, in this specific example, the infusion port 121 formed on the outer peripheral surface 1102 of the tube structure main body 11 mainly occupies the axial dimension of the tube structure main body 11, and the suction port 131 formed on the front end surface 1101 of the tube structure main body 11 mainly occupies the radial dimension of the tube structure main body 11. In this way, it is not necessary to coordinate the space ratio occupied by the infusion port 121 and the suction port 131 in the radial direction of the tube structure main body 11 under the condition that the radial dimension of the tube structure main body 11 is limited, and the size of the suction port 131 and the infusion port 121 can be relatively increased, and the design flexibility of the shape and number of the suction port 131 and the infusion port 121 is relatively improved. By reasonably arranging the infusion port 121 and the suction port 131, while ensuring the size of the suction port 131 of the suction channel 13 to allow the fluid and gravel to pass smoothly, the liquid output of the infusion port 121 of the infusion channel 12 can be guaranteed.

[0102] When the fluid output from the infusion port 121 is large, on the one hand, the range of the fluid ejected from the infusion port 121 is relatively extended, the impact force on the stone is relatively increased, the suction interference is relatively weakened, and the stone extraction efficiency is relatively improved. On the other hand, the ureteroscope can achieve a large fluid output at a relatively low injection pressure, reducing the risk of increased pressure in the kidney.

[0103] It is worth mentioning that, as mentioned above, in some embodiments of the present application, the front end face 1101 of the tube structure main body 11 is designed to extend obliquely forward from the first side of the outer peripheral surface 1102 to the second side opposite to the first side along the axial direction set by the tube mirror main body 10. It is worth mentioning that when the front end face 1101 is designed to extend obliquely forward from the first side of the outer peripheral surface 1102 to the second side along the axial direction set by the tube mirror main body 10, compared with the front end face 1101 being designed to extend flushly from the first side of the suction channel 13 to the second side along the axial direction set by the tube mirror main body 10, the detour distance of the fluid is extended, not only the suction interference is relatively weakened, but also because the area through which the fluid flows is wider, more gravels on the movement path of the fluid can be entrained, which can improve the efficiency of stone extraction.

[0104] It is worth mentioning that, preferably, the diameter of the perfusion channel 12 is equal to or slightly larger than the diameter of the suction channel 13 to achieve flow balance. Here, the diameter of the perfusion channel 12 is equal to or slightly larger than the diameter of the suction channel 13 means that the sum of the equivalent diameters of all the perfusion channels 12 is equal to or slightly larger than the sum of the equivalent diameters of all the suction channels 13.

[0105] In a specific embodiment of the present application, the number of the suction ports 131 is 1, and the number of the perfusion ports 121 is 2. Accordingly, the at least one perfusion channel 12 includes a first perfusion channel and a second perfusion channel, the first perfusion channel having a first perfusion port located at the front end portion 110, and the second perfusion channel having a second perfusion port located at the front end portion 110. Preferably, the first perfusion port and the second perfusion port are arranged opposite to each other.

[0106] In this embodiment, the average of the first inner diameter of the first perfusion channel and the second inner diameter of the second perfusion channel is greater than or equal to one-half of the diameter of the suction channel 13, the size of the perfusion port 121 matches the size of the first perfusion channel, and the size of the suction port 131 matches the size of the suction channel 13. Here, the average diameter of the first perfusion channel and the second perfusion channel refers to the average of the equivalent diameter of the first perfusion channel and the equivalent diameter of the second perfusion channel. The diameter of the suction channel 13 refers to the equivalent diameter of the suction channel 13. More specifically, the outer diameter of the tube structure body 11 is equal to 4.3 mm, the diameter of the suction channel 13 is equal to 2.2 mm, and the equivalent diameter of the first perfusion channel or the second perfusion channel is greater than or equal to 1.2 mm.

[0107] In another specific embodiment of the present application, the perfusion channel 12 is formed around the suction channel 13, that is, the perfusion channel 12 is an annular channel formed around the suction channel 13, or the cross section of the perfusion channel 12 is annular, and the perfusion channel 12 has two perfusion ports 121 formed at the front end 120. In this specific embodiment, the outer diameter of the tube structure body 11 is equal to 4.3 mm, the diameter of the suction channel 13 is equal to 2.2 mm, and the equivalent diameter of the first perfusion channel or the second perfusion channel is greater than or equal to 1.2 mm.

[0108] It should be understood that the size, shape and number of the suction port 131 and the injection port 121 are not limited to the present application, and the size, shape and number of the suction port 131 and the injection port 121 can be adjusted according to actual application conditions to achieve a controllable and orderly fluid circulation.

[0109] It is worth mentioning that the positions of the suction port 131 and the injection port 121 are not limited by the present application. In other specific examples, the suction port 131 and the injection port 121 can be set at other positions. In another specific example of the present application, the suction port 131 and the injection port 121 are respectively set on the outer peripheral surface 1102 and the front end surface.

[0110] In another specific example of the present application, the suction port 131 and the perfusion port 121 are both disposed on the front end face 1101 of the tube structure body 11. Specifically, in this specific example, the at least one perfusion channel 12 includes a first perfusion channel and a second perfusion channel, the first perfusion channel having a first perfusion port located at the front end portion 110, the second perfusion channel having a second perfusion port located at the front end portion 110, and the first perfusion port and the second perfusion port are located on both sides of the suction port 131.

[0111] In the embodiment of the present application, the ureteroscope 100 for suction-injection surgery further includes an image acquisition device 300 and a light source 400 installed on the ureteroscope body 10 to take images of the kidney and the stones located in the kidney. The positions of the image acquisition device 300 and the light source 400 are not limited by the present application. Preferably, the suction port 131 of the suction channel 13 is located within the visible area of ​​the image acquisition device 300 to capture the situation near the suction port 131, so that the user can observe the discharge of the gravel. The light source 400 can be set at a position close to the image acquisition device 300 to provide a sufficient amount of light for the image acquisition device 300.

[0112] Accordingly, the operating unit 20 further includes a fourth operating terminal 25 communicatively connected to the image acquisition device 300. In addition, the image output device 500 (e.g., a computer communicatively connected to the image acquisition device 300) can be communicatively connected to the image acquisition device 300 through the operating unit 20 to acquire an image of the kidney, so that the user can observe the condition of the stone c in the renal pelvis p.

[0113] It is worth mentioning that, in order to ensure that the tube mirror body 10 can be bent to reach different target positions while ensuring the stiffness of the tube mirror body 10, the tube mirror body 10 includes a flexible portion 1010 adjacent to the front end portion 110 and a rigid portion 1020 combined with the flexible portion 1010. The rigid portion 1020 may extend backward from the flexible portion 1010, or the rigid portion 1020 covers at least a portion of the flexible portion 1010 to ensure the local stiffness of the tube mirror body 10.

[0114] Correspondingly, the operating portion 20 further includes a fifth operating end 26 operably connected to the flexible portion 1010 and an operating mechanism 28 mounted on the fifth operating end 26, wherein the operating mechanism 28 is operably connected to the flexible portion 1010 through the fifth operating end 26 to control the curvature of the flexible portion 1010, so that the tube mirror body 10 can reach different target positions, and the curvature of the flexible portion 1010 can be adjusted according to actual conditions. In a specific example, the operating mechanism 28 includes a control line 281 connected to the flexible portion 1010 and an adjuster 282 connected to the control line 281, and the adjuster 282 is configured to drive the control line 281 to pull the flexible portion 1010 so that the flexible portion 1010 bends. The structure of the operating mechanism 28 and the method of controlling the bending of the flexible portion 1010 are not limited by the present application, that is, the operating mechanism 28 can be designed as other structures and control the bending of the flexible portion 1010 by other methods.

[0115] In a specific example, at least a portion of the front end portion 110 of the tube mirror body 10 is the flexible portion 1010, so that the perfusion channel 12 and the suction channel 13 can be bent, and the suction port 131 and the perfusion port 121 can be directed toward the stone c at the target position. The flexible portion 1010 includes an active bending portion 1011 and a passive bending portion 1012, the active bending portion 1011 can be bent under the control of the operating portion 20 and maintain a bent state, and the passive bending portion 1012 bends as the active bending portion 1011 bends.

[0116] The present application also provides a method for using a ureteroscope for suction-and-strike surgery, which includes: S110, extending a lithotripsy mechanism and striking stones; S120, guiding the lithotripsy to the suction port and clamping the lithotripsy at the suction port; S130, retracting the lithotripsy mechanism to the suction port and striking the lithotripsy blocking the suction port, so that the lithotripsy is discharged from the body through the suction channel.

[0117] The following describes the working process of the ureteroscope 100 for suction-assisted surgery by taking the ureteroscope 100 for suction-assisted surgery used for removing stones c in the renal pelvis p as an example.

[0118] In step S110, the lithotripsy mechanism 30 is extended and the stone is struck. Before the stone is struck by the lithotripsy mechanism 30, preparation work needs to be performed. Specifically, first, the endoscopic body 10 can be inserted to the initial predetermined position. Specifically, the endoscopic body 10 can enter the kidney along the patient's ureter and reach the initial predetermined position. In this process, the image acquisition device 300 provided on the endoscopic body 10 and the image output device 500 communicatively connected to the image acquisition device 300 can be used to collect and display the image of the surrounding environment where the endoscopic body 10 passes, and cooperate with the guide mechanism 600 to guide the suction-in-stroke ureteroscope 100 to the initial predetermined position. Specifically, the guide mechanism 600 can enter the perfusion channel 12 through the operating part 20 and guide the endoscopic body 10 to the initial predetermined position. After the endoscopic body 10 reaches the initial predetermined position, the guide mechanism 600 can be removed.

[0119] The lithotripsy mechanism 30 may be placed at the initial predetermined position of the kidney before or after the insertion of the tube scope body 10. Specifically, the lithotripsy mechanism 30 is disposed in the optical fiber channel 14 and extends out of or retracts from the suction port 131.

[0120] Next, the flexible portion 1010 is controlled to bend by the operating mechanism 28 of the operating portion 20 , so that the suction port 131 and the irrigation port 121 can be directed toward the stone c at the target position in the renal pelvis p.

[0121] In the process of controlling the bending of the flexible portion 1010 by the operating mechanism 28 of the operating portion 20, the flexible portion 1010 can be controlled to bend at a desired curvature according to the target position. When the ureteroscope 100 for suction-in-surgery is used to strike a calculus c located in the upper renal pelvis, the flexible portion 1010 is controlled to bend at a first curvature, when the ureteroscope 100 for suction-in-surgery is used to strike a calculus c located in the middle renal pelvis, the flexible portion 1010 is controlled to bend at a second curvature, and when the ureteroscope 100 for suction-in-surgery is used to strike a calculus c located in the lower renal pelvis, the flexible portion 1010 is controlled to bend at a third curvature, and the third curvature is greater than the second curvature and the first curvature.

[0122] In the process of beating the stone c by the stone crushing mechanism 30, as shown in FIG. Fig.11A As shown, the lithotripsy mechanism 30 can be extended to the front of the suction port 131 to strike the stone c at the target position, and the lithotripsy mechanism 30 can be implemented as the holmium laser.

[0123] In step S120, the crushed stones are guided to the suction port 131 and the crushed stones at the suction port 131 are clamped. Fig. 11B Specifically, during the process of striking the stone c by the stone crushing mechanism 30, or after the stone c is crushed by the stone crushing mechanism 30, fluid can be ejected from the irrigation port 121 of the suction-and-strike ureteroscope 100 to the target position to impact and crush the stone. Specifically, the fluid can be injected into the irrigation channel 12 through the injection device 700 connected to the operating part 20, and the fluid is injected into the target position to impact and crush the stone.

[0124] During the process of impact lithotripsy, fluid and gravel can be sucked by negative pressure suction, and the fluid carrying the gravel is diverted under the action of negative pressure suction, renal pelvic recoil, etc., and flows back in the second direction to the suction port 131 of the suction-in-stroke ureteroscope 100 for the operation of looping and stone removal. That is, during the process of impact lithotripsy, the fluid is guided to flow back in the second direction to the suction port 131 of the suction-in-stroke ureteroscope 100, wherein there is a preset angle between the first direction and the second direction. Specifically, gravel and fluid can be sucked by the suction device 800 connected to the operating part 20, so that the fluid and gravel are discharged through the liquid outlet channel 13 to maintain the pressure in the kidney. In the process of sucking the gravel to the suction port 121 of the suction channel 13 of the suction-in-stroke ureteroscope 100, the suction force on the fluid and gravel can be adjusted by adjusting the air pressure in the suction channel 13.

[0125] In the application embodiment, the orientation of the irrigation port 121 is a first orientation, and the orientation of the suction port 131 is a second orientation. The fluid can be injected into the renal pelvis p along the irrigation channel 12 from the irrigation port 121 in a first direction pointed by the first orientation, and after being turned, it is sucked into the suction channel 13 of the suction-in-place ureteroscope 100 from the suction port 131 in a second direction pointed by the second orientation to form a fluid loop.

[0126] In the process of guiding the crushed stones to the suction port 131, some crushed stones of larger size will be clamped in the suction port 131, resulting in the clogging of the suction port 131. Accordingly, the crushing mechanism 30 can crush the crushed stones or flush the crushed stones away.

[0127] Accordingly, in step S130, the stone crushing mechanism 30 is retracted to the suction port 131 and the stone crushing at the suction port 131 is struck, so that the stone crushing is discharged from the body through the suction channel 13. Fig. 11C and 11DAs shown, when the crushed stones are impacted by the fluid or attracted to the suction port 131 and clamped at the suction port 131, the stone crushing mechanism 30 can be retracted to the suction port 131, and the crushed stones at the suction port 131 can be struck, so that the crushed stones are broken into pieces or even powdered, and can then smoothly enter the suction channel 13 from the suction port 131.

[0128] It is worth mentioning that, since the crushed stone is stuck or clamped at the suction port 131, the position of the crushed stone is relatively stable, and the crushing mechanism 30 can accurately hit the crushed stone at the suction port 131. In addition, during the process of the crushing mechanism 30 hitting the crushed stone, the crushed stone abuts against the inner peripheral wall of the suction channel 13. When the impact force generated by the crushing mechanism 30 acts on the crushed stone, the crushed stone will bear most of the energy generated by the crushing mechanism 30, and thus it is easy to be crushed.

[0129] After the stone crushing mechanism 30 is retracted to the suction port 131, the stone stuck in the suction port 131 can be flushed away, so that the crushed stone that can pass through the suction port 131 first enters the suction channel 13 from the suction port 131, so that the crushed stone can be quickly discharged to improve the stone discharge efficiency. In this way, the stone crushing mechanism 30 can not only hit the stone c at a distance, but also crush or even powder the crushed stone near the suction port 131 to prevent the crushed stone from clogging the suction port 131 of the suction channel 13.

[0130] It is worth mentioning that, during the process of hitting the stone c by the lithotripsy mechanism 30, the endoscope body 10 can be rotated so that the lithotripsy mechanism 30 can hit the stone c in multiple directions, and the fluid ejected from the infusion port 121 can comprehensively impact the lithotripsy.

[0131] In summary, the ureteroscope 100 for suction-and-beating surgery and the method for removing stones using a ureteroscope based on the embodiment of the present application are explained, wherein the ureteroscope 100 for suction-and-beating surgery avoids blockage of crushed stones through the "suction-and-beating" stone extraction scheme to improve the efficiency of stone extraction.

[0132] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A ureteroscope for suction-injection surgery, characterized in that: include: A tube scope body having a front end portion and a rear end portion, an operating portion operably coupled to the rear end portion of the tube scope body, and a lithotripsy mechanism; The tube mirror body comprises: a tube structure body; at least one perfusion channel extending from the rear end portion to the front end portion in the tube structure body, the at least one perfusion channel having at least one perfusion port located at the front end portion; and a suction channel extending from the front end portion to the rear end portion in the tube structure body, the suction channel having a suction port located at the front end portion; The stone crushing mechanism can be movably arranged in the tube structure body to switch between a first state and a second state, wherein, when in the first state, the cutting head of the stone crushing mechanism extends out of the suction port to hit the stones, and when in the second state, the cutting head of the stone crushing mechanism retracts into the suction port to hit the stones blocking the suction port.

2. The ureteroscope for suction-injection surgery according to claim 1, wherein: The tube mirror body further includes a stone crushing channel connected to the suction channel, and the stone crushing mechanism is telescopically arranged in the stone crushing channel. When the stone crushing mechanism is in a first state, the cutting head extends into the suction channel through the stone crushing channel to extend out of the suction port.

3. The ureteroscope for suction-injection surgery according to claim 2, wherein: The gravel channel comprises: a main body section and a connecting section extending between the main body section and the suction channel, wherein the connecting section is connected with the suction channel and the main body section.

4. The ureteroscope for suction-injection surgery according to claim 3, wherein: The included angle between the central axis of the connecting section and the central axis of the suction channel ranges from 0° to 45°.

5. The ureteroscope for suction-injection surgery according to claim 3, wherein: The tube structure body has a front end face and an outer peripheral face, the suction port is formed on the front end face, and the front end face of the tube structure body extends obliquely forward from a first side of the outer peripheral face to a second side opposite to the first side along an axial direction set by the tube mirror body.

6. The ureteroscope for suction-injection surgery according to claim 4, wherein: When the stone crushing mechanism is in the second state, the cutting head of the stone crushing mechanism is located in the middle area of ​​the suction port.

7. The ureteroscope for suction-injection surgery according to claim 5, wherein: When the stone crushing mechanism is in the second state, the front end of the cutting head is flush with the front end surface.

8. The ureteroscope for suction-injection surgery according to any one of claims 2 to 7, wherein: The gravel channel is located on the side of the suction channel.

9. The ureteroscope for suction-injection surgery according to claim 2, wherein: The stone crushing channel extends between the suction channel and the rear end of the tube mirror body, and the stone crushing channel has a communication port connected to the suction channel and the stone crushing channel.

10. The ureteroscope for suction-injection surgery according to claim 2, wherein: The operating portion includes a first operating end connected to the perfusion channel, a second operating end connected to the suction channel, and a third operating end connected to the lithotripsy channel.

11. The ureteroscope for suction-injection surgery according to claim 1, wherein: The perfusion port of the perfusion channel has a first orientation for allowing fluid to be injected into the renal pelvis from the perfusion port along the perfusion channel in a first direction pointed by the first orientation, and the suction port of the suction channel has a second orientation that forms a preset angle with the first orientation, so as to allow the fluid to be turned in the renal pelvis and then be sucked into the suction channel from the suction port in a second direction pointed by the second orientation to form a fluid loop.

12. According to the ureteroscope for suction-injection surgery as described in claim 1, the tube structure body has a front end face and an outer peripheral surface formed on the front end face, the irrigation port is formed on the outer peripheral surface of the tube structure body, and the suction port is formed on the front end face of the tube structure body.

Images