A pulse assembly, a suction valve, an endoscope and an insertion system

Abstract

The present invention provides a pulse assembly, a suction valve, an endoscope and an insertion system, which relate to the field of medical devices. The present invention includes a connecting portion having a channel, the channel having an inlet and an outlet, the inlet being used to communicate with an instrument tube and / or a sheath tube; a shielding member, which is arranged in the connecting portion and located between the inlet and the outlet, the shielding member having a first state and a second state; a driving member, which is used to drive the shielding member to switch between the first state and the second state; wherein, when the shielding member is in the first state, the channel is fully open; when the shielding member is in the second state, at least part of the channel is blocked. Compared with the prior art, the present invention has the advantage of being able to adjust the flow rate of the flushing liquid by intermittently changing the flow area of ​​the flushing liquid, thereby effectively improving the flushing effect of the stones.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a pulse component, a suction valve, an endoscope and an insertion system. Background Art

[0002] With the continuous advancement of medical technology, medical endoscopes have become the core tools for diagnosing and treating a variety of diseases such as the digestive system and urinary system, especially in the treatment of stone diseases (such as kidney stones and gallstones). In the lithotripsy of the urinary system, the endoscope enters the renal pelvis through the sheath and uses laser or other energy sources to crush the stones. After lithotripsy, the gap between the endoscope and the sheath usually serves as a reflux channel to help remove the broken stones and flushing fluid, thereby keeping the operation area clean and reducing the occurrence of complications.

[0003] During this process, flushing fluid is injected through the instrument tube and sucked out through the sheath to remove the gravel and keep the field of vision clear. However, due to the complex operation area and narrow space, some gravel is difficult to be effectively removed by the flushing fluid, resulting in longer flushing time to remove. This not only prolongs the operation time, but also increases the risk and discomfort of the patient. Summary of the invention

[0004] In order to solve the above problems, the present application provides a pulse assembly, a suction valve, an endoscope and an insertion system.

[0005] In a first aspect, the present application provides a pulse assembly, which adopts the following technical solution:

[0006] A pulse assembly is applied to an endoscope and / or a sheath tube, wherein the endoscope includes an instrument tube, and the pulse assembly includes:

[0007] A communication portion, comprising a channel, wherein the channel has an inlet and an outlet, wherein the inlet is used to communicate with the instrument tube and / or the sheath tube;

[0008] A shielding member, disposed at the connecting portion and located between the inlet and the outlet, the shielding member having a first state and a second state;

[0009] A driving member, used for driving the shielding member to switch between a first state and a second state;

[0010] Wherein, when the shielding member is in the first state, the passage is completely open; and when the shielding member is in the second state, at least a portion of the passage is blocked.

[0011] Preferably, the shielding member comprises an airbag, the airbag is arranged in the channel, and the driving member is used to inflate or deflate the airbag;

[0012] When the shielding member is in the first state, the airbag is not inflated, so that the passage is fully opened; when the shielding member is in the second state, the airbag is inflated, so that at least a portion of the passage is blocked.

[0013] Preferably, the airbag includes at least two bladder units, and adjacent bladder units are connected to each other;

[0014] And / or, the airbag is arranged to extend along the circumference of the channel.

[0015] Preferably, at least two of the capsule units are arranged in a direction from the inlet to the outlet, and the expansion pressure of the capsule unit gradually decreases or increases from the inlet side to the outlet side;

[0016] And / or, a transition membrane is connected between the capsule unit close to the outlet side and the capsule unit close to the inlet side, and the transition membrane is located on the side of the capsule unit close to the center of the channel;

[0017] And / or, the driving member includes an inflatable bladder, which is connected to the airbag. When an external force presses the inflatable bladder, the inflatable bladder is deformed to inflate the airbag; when the external force is removed, the inflatable bladder returns to its original state, and the gas in the airbag is drawn into the inflatable bladder.

[0018] Preferably, the flow area at the connection between the inflatable bladder and the bladder unit is larger than the flow area at the connection between adjacent bladder units.

[0019] In a second aspect, the present application provides a suction valve, which adopts the following technical solution:

[0020] A suction valve comprises a valve body and a valve stem, wherein the valve body has a valve cavity, and the valve body is provided with an atmospheric port, a sample port and a negative pressure port which are connected to the valve cavity; the valve stem is movably provided on the valve body to switch between a closed position and a suction position, and when the valve stem is in the closed position, the atmospheric port can be connected to the negative pressure port, and when the valve stem is in the suction position, the sample port can be connected to the negative pressure port;

[0021] It also includes a pulse assembly as described in the above technical solution, wherein the outlet is connected to the sample port, the driving member is arranged on the valve body, and when the valve stem moves, the driving member can be triggered to switch the shielding member between the first state and the second state.

[0022] Preferably, it further comprises a valve bonnet, the valve bonnet is arranged on the valve body, the valve bonnet comprises a pressing portion, the pressing portion is elastic, the air port is arranged on the pressing portion, and the valve bonnet is connected to the valve stem;

[0023] When the pressing portion is pressed by an external force, the pressing portion may be elastically deformed to close the air port and move the valve stem.

[0024] Preferably, the valve cap and / or the valve body comprises an elastic limiting portion, and the elastic limiting portion is on the moving path of the valve stem, and when the valve stem is in the suction position, the valve stem contacts the elastic limiting portion;

[0025] When the valve stem is in the suction position, the valve stem can push the elastic limiting part to deform so as to switch between the first pulse position and the second pulse position; when the valve stem switches between the first pulse position and the second pulse position, the driving member can be triggered to switch the shielding member between the first state and the second state.

[0026] In a third aspect, the present application provides an endoscope, which adopts the following technical solution:

[0027] An endoscope comprises the suction valve described in the above technical solution.

[0028] In a fourth aspect, the present application provides an implantation system, which adopts the following technical solution:

[0029] An insertion system comprises a sheath tube and the endoscope described in the above technical solution; and also comprises a connecting tube, one end of which is connected to the sheath tube, and the other end of which is connected to the inlet.

[0030] The present invention has the following advantages and beneficial effects:

[0031] The shielding member of the present invention can intermittently change the flow area of ​​the flushing liquid, thereby adjusting the flow rate of the flushing liquid, thereby effectively improving the flushing effect of the stones. Specifically, during the flushing process, the design of the shielding member can change the flow area to cause periodic changes in the flow rate of the flushing liquid. When the flow rate is faster, the flushing liquid can more effectively drive the flow of stones; when the flow rate slows down, the flushing liquid can form pressure fluctuations in the local area to help loosen or push the stones. In this way, the gravel can be better removed under the action of flushing liquids with different flow rates, avoiding the problem that the stones cannot be effectively removed when the flushing liquid flows at a uniform speed.

[0032] Furthermore, the shielding piece adjusts the flow area so that the flow of the flushing liquid is no longer constant, but fluctuates, thereby improving the efficiency of stone removal. This intermittent flow helps to disperse, impact and discharge stones, reducing the possibility of stones being retained in the operating area. Ultimately, this design of adjusting the flow rate effectively shortens the operation time and reduces the risk and discomfort of patients during the operation.

[0033] On the other hand, by adjusting the flow rate of the flushing fluid through the shielding piece, it can be controlled according to different surgical needs, thereby avoiding the situation where the flow rate is too fast or too slow. Specifically, in some operations, a faster flow rate may be required to quickly remove the gravel, while in other cases, a slower flow rate may be required to ensure that the flushing fluid can fully clean the surgical area and avoid unnecessary impact on the surrounding tissue. By adjusting the flow area, the shielding piece can flexibly adjust the flow rate to ensure that the flow rate of the flushing fluid can meet the requirements of lithotripsy and adapt to the actual needs of different surgical procedures, thereby improving the safety and efficiency of the operation and reducing the risk and discomfort of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 is a first schematic diagram of the connecting portion;

[0036] Figure 2 is a second schematic diagram of the connecting portion;

[0037] Figure 3 It is a schematic diagram of the structure of the suction valve;

[0038] Figure 4 is a first cross-sectional view of the suction valve;

[0039] Figure 5 is a second cross-sectional view of the suction valve;

[0040] Figure 6 is a third cross-sectional view of the suction valve;

[0041] Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of the middle part A;

[0042] Figure 8 It is a partial cross-sectional view of the endoscope;

[0043] Fig. 9 It is a schematic diagram of the structure of an endoscope;

[0044] Fig.10 It is a schematic diagram of the structure after the endoscope and sheath are assembled.

[0045] The markings in the figure are:

[0046] 10. endoscope; 11. instrument tube; 12. through port; 20. sheath; 30. connecting tube; 100. connecting part; 110. channel; 111. inlet; 112. outlet; 200. shielding member; 210. air bag; 211. bag unit; 212. transition membrane; 300. driving member; 310. inflatable bag; 400. suction valve; 410. valve body; 411. atmospheric port; 412. sample port; 413. negative pressure port; 414. valve cavity; 420. valve stem; 430. valve cap; 431. pressing part; 432. elastic limiting part. DETAILED DESCRIPTION

[0047] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0048] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0049] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0050] In urinary system lithotripsy, especially in percutaneous nephrolithotomy (PCNL), an endoscope is usually inserted into the renal pelvis through a sheath. After the stones are broken up by laser, the flushing fluid and the stones are discharged through the reflux channel formed between the endoscope and the sheath. However, in actual operation, the phenomenon of stone deposition often occurs. These deposited stones may block the operation area, which not only affects the subsequent lithotripsy operation, but also reduces the efficiency of the operation. Therefore, it is usually necessary to remove most of the stones with flushing fluid before continuing the lithotripsy operation.

[0051] The inventors have found that the existing flushing fluid generally maintains a uniform flow rate during flushing. However, when the flow rate of the flushing fluid is constant, its flushing force is often insufficient to effectively remove all stones, especially when the surgical area is complex and the space is narrow. This is because the force exerted on the stones by the liquid with a uniform flow rate is relatively single and stable, and it is difficult to overcome the resistance of the stones due to irregular shapes, rough surfaces or being stuck in tissue folds. In addition, when there are depressions or blind spots in the surgical area, the liquid with a uniform flow rate tends to form stagnant areas in these areas, making it difficult for the stones in these areas to be effectively touched or transported by the flushing fluid. At the same time, the lack of change in flow rate also means that the liquid has insufficient disturbing force on the stones, and cannot destroy the adhesion or friction between the stones and the surrounding tissues, further causing the stones to be retained. These problems make the flushing fluid with a constant flow rate less efficient in removing stones, and it may take longer to flush, thereby increasing the operation time and the patient's discomfort.

[0052] In order to solve the above problems, the present invention provides a shielding design that can dynamically adjust the flow rate of the flushing liquid. The shielding can adjust the flow rate by changing the flow area of ​​the flushing liquid, thereby significantly improving the stone removal effect. When the flow rate is accelerated, the flushing liquid can provide a stronger impact force to help transport the stones; and when the flow rate is slowed down, the pressure fluctuations generated by the flushing liquid in the local area can loosen the embedded stones or change the direction of the stones, making it easier to be taken out. By intermittently changing the flow rate in this way, the retention state of the stones can be effectively destroyed, the stone removal efficiency can be improved, and the operation time can be reduced, and the surgical risks and discomfort of the patients can be reduced. This flow rate adjustment design shows significant advantages in complex surgical environments and provides a more efficient and safe solution for lithotripsy.

[0053] The following is combined with Figures 1 to 10 , a pulse assembly, a suction valve, an endoscope and an insertion system provided by the present application are described in detail through specific embodiments and their application scenarios.

[0054] A first aspect of this embodiment describes a pulse component in detail.

[0055] Reference Fig. 9 , Fig.10 The embodiment of the present application discloses a pulse component, which is applied to an endoscope 10 and / or a sheath 20 to adjust the flow rate of the flushing fluid, thereby improving the efficiency of lithotripsy and adapting to different surgical requirements.

[0056] Exemplarily, the endoscope 10 includes a handle and an insertion portion, wherein an instrument tube 11 is provided in the handle and the insertion portion, and the instrument tube 11 is used to inject flushing fluid into the patient's body. During the surgical operation, the insertion portion of the endoscope 10 is usually placed in the sheath 20, so that a reflux channel 110 is formed between the sheath 20 and the insertion portion, and the reflux channel 110 is responsible for discharging the flushing fluid and gravel out of the body. In the prior art, the flushing fluid is usually injected and discharged at a constant flow rate, but this operation mode with a stable flow rate may result in some gravel being unable to be effectively taken out. The present application provides a technical solution that can periodically adjust the flow rate of the flushing fluid through the introduction of a pulse component.

[0057] In one embodiment, a pulse assembly is disposed on the instrument tube 11. The pulse assembly includes a driving member 300 and a shielding member 200, wherein the shielding member 200 is disposed in the flushing liquid channel 110 of the instrument tube 11, and can periodically change the shielding state in the channel 110 through the action of the driving member 300. When the shielding member 200 partially blocks the channel 110, the flow area of ​​the flushing liquid is reduced, resulting in an increase in the flow rate of the flushing liquid; when the shielding member 200 is unblocked, the channel 110 restores its original area and the flow rate decreases. This periodic change in flow rate can form an intermittent impact force, which helps to loosen the gravel and change the retention position of the gravel, thereby facilitating the transportation and discharge of the gravel.

[0058] Through structural design, this solution can avoid the problem of limited force of liquid on stones at a single flow rate, especially when stones are embedded in tissue folds or irregular shapes, higher flow rates and periodic pressure fluctuations help overcome adhesion and friction, making it easier to remove the broken stones. In addition, the setting position and shape of the shielding member 200 and the driving member 300 can be adjusted as needed to adapt to different surgical environments.

[0059] In another embodiment, the pulse assembly is disposed on the sheath 20 and communicated with the reflux channel 110 formed between the sheath 20 and the insertion portion. The pulse assembly also includes a driving member 300 and a shielding member 200. The shielding member 200 can change the local flow area of ​​the channel 110 in the reflux channel 110, thereby adjusting the flow rate of the suction flushing liquid. Specifically, when the shielding member 200 reduces the flow area of ​​the reflux channel 110, the negative pressure formed in the channel 110 will increase the flow rate, driving more gravel to flow outward; when the area of ​​the channel 110 is restored, the flow rate is reduced, but the pressure fluctuation formed in the channel 110 can be beneficial to loosen the retained gravel.

[0060] This solution can not only enhance the suction effect of the reflux channel 110, but also form different flow velocity gradients in local areas, thereby avoiding the stagnant area problem caused by uniform flow velocity. This design is particularly suitable for situations where the surgical area is complex and the space is narrow, and helps to reduce the phenomenon of gravel deposition and retention.

[0061] In some schemes, the pulse assembly can be applied to the instrument tube 11 and the sheath tube 20 at the same time, that is, the pulse assembly is connected to the instrument tube 11 and the sheath tube 20 respectively, that is, one pulse assembly is connected to the instrument tube 11, and another pulse assembly is connected to the sheath tube 20. By controlling the flow rate changes in the instrument tube 11 and the reflux channel 110, the synchronous regulation of the injection and discharge of the flushing liquid can be achieved. Specifically, when the flow rate in the instrument tube 11 is accelerated, the injection pressure of the flushing liquid can be increased, which helps to loosen the gravel; at the same time, the flow rate in the reflux channel 110 is synchronously increased, which is conducive to the rapid transportation of the gravel out of the body. The coordinated work of the two pulse assemblies can reduce the stagnation phenomenon to a certain extent and optimize the flushing effect.

[0062] In some embodiments, reference Figure 1 , Figure 2 The pulse assembly includes a connecting part 100, a shielding member 200 and a driving member 300. The connecting part 100 is a tubular structure having an inlet 111 and an outlet 112, which is used to provide a flow channel 110 for the flushing liquid between different components. The connecting part 100 can be made of rigid or flexible materials to meet the needs of different surgical instruments. The size and shape of the connecting part 100 can be optimized according to the specific surgical scenario to ensure the smooth flow of the flushing liquid.

[0063] The shielding member 200 is disposed between the inlet 111 and the outlet 112 of the connecting portion 100, and can adjust the flow area of ​​the flushing liquid by changing its own state. The shielding member 200 has two working states. The first state: the shielding member 200 is fully opened, so that the channel 110 between the inlet 111 and the outlet 112 remains unobstructed, and the flushing liquid can flow through at the original flow rate. The second state: the shielding member 200 partially or completely blocks the channel 110, resulting in a reduction in the flow area, thereby changing the flow rate of the flushing liquid or generating pressure fluctuations.

[0064] The driving member 300 is used to drive the shielding member 200 to switch between the first state and the second state. The driving member 300 can be in various forms, including but not limited to mechanical devices, electric devices or hydraulic devices. For example, the movement of the shielding member 200 is controlled by driving the valve plate to rotate by an electric motor, or by adjusting the inflation and deflation of the airbag 210 by pressure.

[0065] By adjusting the driving member 300, the shielding member 200 can dynamically change the flow area between the inlet 111 and the outlet 112 of the connecting portion 100. When the flushing liquid flows through the connecting portion 100, the change in the flow area directly affects the flow rate of the flushing liquid.

[0066] When the shielding member 200 is in the first state, the channel 110 is fully opened, and the flushing liquid can flow at the original flow rate, which is suitable for general flushing needs or scenarios where the flushing liquid needs to be quickly injected.

[0067] When the shielding member 200 is in the second state, part of the channel 110 is blocked, the flow area of ​​the channel 110 is reduced, and the flow rate of the flushing liquid is significantly increased, which can form a large impact force locally, thereby loosening or moving the gravel. At the same time, the intermittent flow rate change can also generate pressure fluctuations, which helps to destroy the adhesion between the stone and the surrounding tissue, further improving the flushing effect.

[0068] When the inlet 111 of the connecting part 100 is connected to the instrument tube 11, the pulse assembly can adjust the injection flow rate of the flushing liquid in the instrument tube 11. The adjusted flushing liquid flow rate can form a strong impact during injection according to actual needs, helping to loosen gravel or clean the surgical area.

[0069] When the inlet 111 of the communication part 100 is connected to the sheath tube 20, the pulse assembly can adjust the suction flow rate of the flushing liquid in the reflux channel 110. By increasing the suction flow rate, the ability of the gravel to be discharged outward can be enhanced, especially for large gravel or gravel deposited in complex areas.

[0070] The pulse assembly of the present application can achieve precise adjustment of the flow rate of the flushing fluid, so that it can meet different surgical needs during injection and suction. This design not only helps to loosen and remove the gravel, but also can adapt to the complexity of the surgical area, which is beneficial to reducing the operation time and patient discomfort. In addition, the pulse assembly has a simple structure and strong adaptability, which can improve the overall surgical effect without significantly increasing the complexity of the equipment.

[0071] Exemplarily, the shielding member 200 can be designed as a rotating plate, and the rotation of the rotating plate is controlled by the driving member 300, so as to adjust the flow area of ​​the channel 110. Specifically, the rotating plate is installed in the connecting portion 100 and can rotate around a fixed axis. By changing the position or angle of the rotating plate, the relative relationship between it and the instrument tube 11 or the sheath tube 20 can be dynamically adjusted, thereby affecting the area of ​​the channel 110 in the instrument tube 11 and / or the flow area of ​​the reflux channel 110 in the sheath tube 20, and then adjusting the flow rate of the flushing liquid.

[0072] The rotating plate is usually a flat plate structure and can be made of a rigid material (such as metal or hard plastic) to ensure stable operation under fluid pressure. The shape and size of the rotating plate can be optimized according to the specific design of the channel 110, for example, a curved edge is used to facilitate smoother and more precise flow control. The drive member 300 can adopt a simple and easy-to-operate pull rope structure. When the pull rope applies force, the rotating plate can be pulled to rotate around the axis through the connecting mechanism to complete the switching of the shielding member 200 between different angles. The choice of the drive member 300 is flexible, and mechanical, electric or pneumatic devices can be used as needed, depending on the application environment and operating requirements.

[0073] According to an alternative embodiment, referring to Figure 1 , Figure 2 , the shielding member 200 includes an airbag 210, which is arranged in the channel 110, and the driving member 300 is used to inflate or deflate the airbag 210. When the shielding member 200 is in the first state, the airbag 210 is not inflated, so that the channel 110 is fully opened; when the shielding member 200 is in the second state, the airbag 210 is inflated, so that at least part of the channel 110 is blocked. When the shielding member 200 is in the first state, the airbag 210 is in an uninflated state, its volume is small, and it is completely attached to the wall of the channel 110, so that the channel 110 is fully opened. At this time, the flushing liquid can pass through the channel 110 at a uniform flow rate, which is suitable for conventional flushing operations. When the shielding member 200 is in the second state, the driving member 300 inflates the airbag 210, and the airbag 210 expands and occupies part of the space of the channel 110, thereby reducing the flow area of ​​the channel 110. The reduction in the flow area increases the flow rate of the flushing liquid, forming a higher impact force, which is suitable for removing stubborn gravel or improving the efficiency of gravel movement. The driving member 300 controls the inflation or deflation process of the airbag 210, and can flexibly switch between the first state and the second state, thereby realizing dynamic adjustment of the flow rate of the flushing liquid. This process can be directly controlled by the surgical operator to respond to surgical needs in real time.

[0074] The airbag 210 is usually made of elastic material, such as silicone or polyurethane, to ensure good durability and recovery performance during repeated inflation and deflation. The shape of the airbag 210 can be cylindrical, spherical, or designed into a matching special-shaped structure according to the cross-section of the channel 110, so as to fit closely with the wall of the channel 110 to achieve a more efficient blocking effect.

[0075] The driving member 300 is usually an inflatable device, which can be a manual pump, a pneumatic system or an electric pump, and adjusts the expansion or contraction state of the airbag 210 by controlling the entry or discharge of gas. The driving member 300 can be externally pressed or electrically controlled to flexibly meet the adjustment needs during surgery.

[0076] According to an alternative embodiment, referring to Figure 1 , Figure 2 The airbag 210 includes at least two bladder units 211, and adjacent bladder units 211 are connected. The connection between adjacent bladder units 211 can achieve uniform pressure distribution during the expansion of the airbag 210. Specifically, when the airbag 210 is inflated, the gas can flow between the bladder units 211, so that the expansion of the airbag 210 is more uniform, avoiding the situation where a certain unit is over-inflated, which is conducive to providing a stable flow rate regulation effect. Through this structure, the overall expansion performance of the airbag 210 is more coordinated and adapts to channels 110 of different shapes and sizes.

[0077] According to an optional embodiment, the airbag 210 is extended along the circumference of the channel 110. This arrangement enables the airbag 210 to form a uniform expansion area around the entire circumference of the channel 110, covering various parts of the channel 110. When the airbag 210 is inflated, it can change the flow area of ​​the channel 110 in a large range, thereby adjusting the flow rate. The circumferential extension helps to ensure that the airbag 210 can evenly block different areas of the channel 110 when inflated, further improving the efficiency and accuracy of gravel flushing.

[0078] According to an alternative embodiment, referring to Figure 1 , Figure 2 , at least two capsule units 211 are arranged along the direction from the inlet 111 to the outlet 112, and the expansion pressure of the capsule unit 211 gradually decreases or increases from the inlet 111 side to the outlet 112 side. This design of the expansion pressure distribution enables the capsule units 211 to expand or contract one by one in a certain order, thereby producing a more significant pulse effect in the channel 110. The sequential expansion of the capsule units 211 can produce a pulse fluctuation effect, so that the flow of the flushing liquid presents a periodic change. This change not only enhances the impact force on the lithotripsy, but also effectively prevents the liquid from forming a stagnant area in the surgical area.

[0079] When the expansion pressure gradually decreases from the inlet 111 side, the bladder unit 211 near the inlet 111 will expand first, gradually pushing the flushing liquid to the outlet 112. This design can form a stable pressure wave to help drive the gravel to move. When the expansion pressure gradually increases from the inlet 111 side, the bladder unit 211 on the outlet 112 side will expand first, thereby producing a phased control of the flow rate in the channel 110, limiting the reflux of liquid and enhancing the local flushing effect.

[0080] According to an alternative embodiment, referring to Figure 1 , Figure 2A transition membrane 212 is connected between the capsule unit 211 near the outlet 112 and the capsule unit 211 near the inlet 111. The transition membrane 212 is located on the side of the capsule unit 211 near the center of the channel 110, and is used to cover the gap or recessed area between adjacent capsule units 211. The transition membrane 212 is closely attached to the center direction of the channel 110, connecting the edges of adjacent capsule units 211, thereby eliminating the recessed area formed by the arrangement between the capsule units 211. The material of the transition membrane 212 usually has a certain degree of flexibility, and can be deformed with the expansion and contraction of the airbag 210 without affecting the function of the capsule unit 211.

[0081] Small recessed areas may be formed due to the gaps between the capsule units 211, where gravel or other particles tend to accumulate and are difficult to discharge. By providing the transition membrane 212, these recessed areas are effectively closed to form a continuous flow channel 110, so that the flushing liquid can remove gravel more smoothly when passing through.

[0082] The transition membrane 212 and the bladder unit 211 form an integrated structure, avoiding additional assembly steps and enhancing the sealing and durability of the assembly. In the expanded state, the transition membrane 212 and the adjacent bladder unit 211 work together to ensure that the flow area in the channel 110 maintains a streamlined design when changing, reducing the generation of eddy currents or stagnation.

[0083] According to an optional embodiment, the driving member 300 includes an inflatable bag 210 body, which is connected to the airbag 210. When an external force presses the inflatable bag 210 body, the inflatable bag 210 body is deformed to inflate the airbag 210. When the external force is removed, the inflatable bag 210 body returns to its original state, and the gas in the airbag 210 is extracted into the inflatable bag 210 body. The design of the inflatable bag 210 body has elastic deformation and self-reset functions. The inflation and deflation of the airbag 210 can be achieved by pressing and releasing the external force, thereby controlling the expansion and contraction state of the airbag 210.

[0084] The inflatable bag 210 body is connected to the airbag 210 through the airway tube, and the gas can flow freely between the two. When an external force is applied to the inflatable bag 210 body to press, the gas inside the bag body is squeezed and enters the airbag 210 along the airway tube, causing the airbag 210 to expand. The expansion of the airbag 210 will cause the channel 110 to be partially or completely blocked, thereby changing the flow rate or circulation pattern of the flushing liquid. After the external force is removed, the inflatable bag 210 body relies on its own elastic material to restore its original state, and a negative pressure is formed inside it. The gas in the airbag 210 is drawn back into the inflatable bag 210 body, and the airbag 210 is thus shrunk to its original state. This process can be repeated without the need for complicated operations or additional power devices.

[0085] The airbag 210 can be quickly inflated and deflated by simply pressing and releasing, thereby changing the flow area of ​​the channel 110 and improving the ease of operation of the device. The expansion state of the airbag 210 can be adjusted by pressing force and time, which can adapt to different surgical needs and flexibly control the flow rate of the flushing fluid. The self-resetting characteristics of the inflatable bag 210 body reduce the dependence on additional drive devices, ensure the simplicity and reliability of the device, and reduce maintenance requirements. In urological surgery, especially in complex anatomical areas, the inflatable bag 210 body can effectively discharge gravel and avoid fluid retention or stone residue by dynamically adjusting the expansion state of the airbag 210.

[0086] According to an optional embodiment, the flow area at the connection between the inflatable bag 210 body and the bladder unit 211 is larger than the flow area at the connection between adjacent bladder units 211. Such a structural layout helps to achieve graded transmission of airflow. Specifically, when an external force presses the inflatable bag 210 body, the airflow preferentially enters the bladder unit 211 directly connected to the inflatable bag 210 body, causing it to expand first; then, the airflow gradually passes through the smaller connection between adjacent bladder units 211, causing them to expand in turn. This design realizes dynamic regulation of segmented and step-by-step expansion, thereby forming a more obvious pulse effect. The inflatable bag 210 body is connected to the first bladder unit 211 through an airway, and the flow area at the connection is large, ensuring that when the inflatable bag 210 body is pressed, the airflow preferentially enters the first bladder unit 211, causing it to expand rapidly. Adjacent bladder units 211 are connected through airways, and the flow area of ​​these airways is small, thereby limiting the passage speed of the airflow. This restriction requires a certain time difference for the airflow to be transmitted, causing the bladder units 211 to expand in sequence, gradually expanding from the inlet 111 side to the outlet 112 side. When the external force is removed, the gas flows in the opposite direction, and flows back from the bladder units 211 on the outlet 112 side to the inflatable bladder 210 body in sequence, so that each bladder unit 211 gradually returns to its initial state.

[0087] It is understandable that in order to further optimize the exhaust process of the airbag 210 structure and prevent the first-restored capsule unit 211 from blocking the exhaust channel 110 of the other capsule units 211, a convex structure (hereinafter referred to as "convex strip") can be set in the first-restored capsule unit 211. The convex strip can form a special airflow passage between the inner wall of the capsule unit 211 and the center of the channel 110 when the capsule unit 211 is restored to its original state. Through this flow channel, the first-restored capsule unit 211 can be connected with the adjacent capsule unit 211, thereby effectively avoiding the problem of channel 110 blocking caused by the exhaust of a single capsule unit 211. When the capsule unit 211 is restored to its original state, most of its inner wall will be close to the channel 110, thereby closing the path for gas circulation. Due to the existence of the convex strip, a part of the gap is retained between the inner wall of the capsule unit 211 and the channel 110, thereby forming an independent airflow channel 110. This flow channel can connect the bladder unit 211 that has recovered its original state first and the adjacent bladder unit 211 that has not yet fully recovered, ensuring that the gas can continue to be discharged.

[0088] When the pressing force is removed, the gas flows back from the outlet 112 side capsule unit 211 to the inlet 111 side step by step. The flow channel formed by the convex strip ensures that even if a capsule unit 211 is restored first, the subsequent gas can still be smoothly discharged from the subsequent capsule unit 211, and the overall exhaust process will not be affected by the closure of the local channel 110.

[0089] A second aspect of this embodiment describes a suction valve in detail.

[0090] Reference Figure 3 , Figure 4 A suction valve 400 includes a valve body 410 and a valve stem 420. The valve body 410 has a valve cavity 414. The valve body 410 is provided with an air port 411, a sample port 412, and a negative pressure port 413 that are connected to the valve cavity 414. The valve stem 420 is movably provided on the valve body 410 to switch between a closed position and a suction position. When the valve stem 420 is in the closed position, the air port 411 can be connected to the negative pressure port 413. When the valve stem 420 is in the suction position, the sample port 412 can be connected to the negative pressure port 413. The suction valve 400 can realize flexible control of the air path by switching the position signal of the valve stem 420 to meet different operation requirements.

[0091] In addition, the suction valve 400 is also combined with a pulse assembly in the above-mentioned embodiment. The outlet 112 of the pulse assembly is connected to the sample port 412, and the driving member 300 of the pulse assembly is arranged in the valve body 410 and can be associated with the movement of the valve stem 420. When the valve stem 420 moves during operation, it can trigger the driving member 300 to move, so that the shielding member 200 switches between the first state and the second state, thereby realizing the control of the pulse assembly. It can be understood that in some embodiments, the connecting portion 100 can serve as the valve body 410 of the suction valve 400, so that the suction valve 400 and the pulse assembly are combined into one component.

[0092] By integrating the pulse component into the suction valve 400, the effect of the pulse component can be triggered while pressing or switching the suction valve 400. Specifically, during the operation of the suction valve 400, not only can the flushing liquid in the reflux channel 110 between the insertion portion and the sheath tube 20 be sucked through the sample port 412, but the flow rate of the flushing liquid can also be periodically changed through the pulse component.

[0093] Combining the suction valve 400 with the pulse assembly enables the dual operations of suction and changing the flow rate of the flushing fluid to be completed simultaneously by pressing the suction valve 400 in a single operation, which simplifies the surgical process and reduces the burden on the operator. The pulse assembly changes the flow rate of the flushing fluid during the suction process, which can produce a periodic pulse effect, thereby increasing the impact force and removal efficiency of the flushing fluid on the gravel, and helping to remove the gravel in the surgical area more quickly. The linkage trigger design of the valve stem 420 and the drive member 300 avoids the need for additional operation of controlling the pulse assembly alone, making the device more efficient and easier to operate as a whole.

[0094] The outlet 112 of the pulse assembly is connected to the sample port 412, and is directly connected to the reflux channel 110 between the insertion part and the sheath 20 through the sample port 412. This design ensures that the suction process of the flushing liquid is not affected by the additional structure, while ensuring that the pulse effect can act on the flushing liquid synchronously. When the suction valve 400 is pressed, the air circuit switching and the pulse assembly state switching are completed, forming a periodic change in flow rate to meet the needs of different surgeries to optimize the lithotripsy and flushing effects.

[0095] According to an alternative embodiment, referring to Figure 4 , Figure 5 , further comprising a valve cap 430, which is disposed on the valve body 410, and includes a pressing portion 431, which is elastic, and the air port 411 is disposed on the pressing portion 431, and the valve cap 430 is connected to the valve stem 420. When the pressing portion 431 is pressed by an external force, the pressing portion 431 can be elastically deformed to close the air port 411 and enable the valve stem 420 to move.

[0096] When the pressing part 431 is pressed by an external force, its elastic deformation can trigger the following two functions: first, the pressing part 431 is deformed to close the atmospheric port 411, thereby cutting off the connection between the atmosphere and the valve cavity 414; second, the deformation of the pressing part 431 further acts on the valve stem 420, driving the valve stem 420 to move, thereby switching between different air paths in the valve body 410. The pressing part 431 is made of elastic material, such as silicone, rubber or other elastic polymers suitable for medical devices. When pressed, the pressing part 431 deforms along the set direction. When the deformation reaches a certain degree, it can effectively close the atmospheric port 411 and transmit the force to the valve stem 420, thereby achieving precise operation.

[0097] The valve cap 430 is connected to the valve stem 420 by snapping, threading, gluing or integral molding to ensure that the force of the pressing portion 431 can be reliably transmitted to the valve stem 420. When the pressing portion 431 is deformed, its thrust on the valve stem 420 can be precisely controlled to achieve flexible switching of the valve stem 420 between the closed position and the suction position.

[0098] According to an alternative embodiment, referring to Figure 6 , Figure 7 The valve cap 430 and / or the valve body 410 include an elastic limiting portion, which is on the moving path of the valve stem 420 and is used to provide tactile feedback and dynamic switching functions. When the valve stem 420 is in the suction position, the valve stem 420 contacts the elastic limiting portion.

[0099] When the valve stem 420 is in the suction position, the valve stem 420 can push the elastic limiter to deform so as to switch between the first pulse position and the second pulse position; when the valve stem 420 switches between the first pulse position and the second pulse position, the driving member 300 can be triggered so as to switch the shielding member 200 between the first state and the second state. The elastic limiter provides clear tactile feedback, allowing the user to clearly perceive the current position and functional state of the valve stem 420. The graded operation of the ordinary suction and pulse suction functions avoids the situation of mis-triggering the pulse component.

[0100] When the valve cap 430 is pressed to put the valve stem 420 in the suction position, the valve stem 420 contacts the elastic limiter and generates a sense of resistance. This sense of touch reminds the user that the position required for the normal suction function has been reached and there is no need to continue pressing hard. If a pulse function is required on the basis of suction, the user can continue to press the valve cap 430 to make the valve stem 420 further push the elastic limiter to deform, thereby triggering subsequent linkage operations.

[0101] In some embodiments, reference Figure 4 , Figure 5The driving member 300 is configured as the body of the inflatable bag 210, located between the valve cap 430, the valve stem 420 and the valve body 410, and connected to the shielding member 200. When the valve cap 430 is initially pressed, the body of the inflatable bag 210 is not completely pressed, and only provides a suction function; after the valve stem 420 pushes the elastic limiter to deform, further pressing the valve cap 430 can press the body of the inflatable bag 210, and then inflate the airbag 210 connected to the shielding member 200, triggering the shielding member 200 to switch between the first state and the second state, forming a pulse effect.

[0102] Primary operation (normal suction): the user presses the valve cap 430 until the valve stem 420 touches the elastic limiter, providing a basic suction function, and the pulse assembly is not triggered at this time.

[0103] Secondary operation (pulse suction): the user continues to press the valve cap 430, so that the valve stem 420 pushes the elastic limit portion to deform, triggering the inflatable bag 210 to work, and further achieving a pulse effect.

[0104] Without increasing the complexity of the operation, the dual functions (suction and pulse) of the suction valve 400 are realized, meeting the diverse needs in different surgical scenarios. The pulse assembly is triggered only when the user intentionally continues to press the valve cap 430, avoiding the waste of resources caused by starting the pulse assembly when it is not needed. The deformation of the elastic limiter and the linkage design of the inflatable bag 210 ensure the accuracy of the switching of the shielding member 200, making the pulse adjustment of the flushing liquid flow rate more regular and controllable.

[0105] The elastic limiting part may be made of a material with good elasticity and deformation recovery performance (such as silicone, medical plastic or elastic metal sheet). The elastic limiting part and the valve body 410 or the valve cap 430 may be fixed by snap-fitting, integrated or welding.

[0106] A third aspect of this embodiment provides a detailed description of an endoscope.

[0107] Reference Figure 8 , Fig. 9 , an endoscope 10, comprising the suction valve 400 in the above embodiment. In this way, the endoscope 10 has the beneficial effects of the above suction valve 400, which will not be repeated here. The suction valve 400 is connected to the reflux channel 110 of the insertion part, so that the endoscope 10 can achieve the comprehensive effects of suction and pulse flushing through the suction valve 400 while having the basic endoscope function.

[0108] In the present embodiment, the suction valve 400 is connected to the instrument tube 11 of the endoscope 10. The instrument tube 11 is provided with a through-port 12, through which other pipelines can be connected. In this way, the other pipelines can divide the instrument tube 11 into a section on the side of the suction valve 400 and a section at the distal end, so that the suction valve 400 can suck liquids in other pipelines. Specifically, when it is necessary to use the endoscope 10 to suck substances from the instrument tube 11, the through-port 12 can be closed to ensure that the suction valve 400 is only connected to the instrument tube 11. On the other hand, when it is necessary to suck substances through other pipelines, the through-port 12 can be opened and a connecting component can be inserted to block the instrument tube 11, and at the same time, the suction valve 400 is connected to other pipelines to ensure that liquids or substances can be sucked from other pipelines.

[0109] To achieve the above switching function, the connecting component can be a blocking block, in which a flow channel is provided, and the flow channel is connected to the instrument tube 11 facing the side of the suction valve 400. Through this design, the instrument tubes 11 on both sides of the blocking block can be effectively isolated, and the suction valve 400 is connected to other pipelines through the flow channel, thereby realizing flexible operation of the suction valve.

[0110] The fourth aspect of this embodiment provides a detailed description of an implantation system.

[0111] Reference Fig. 9 , Fig.10 , an insertion system, comprising a sheath 20 and the endoscope 10 of the above embodiment; wherein, it also comprises a connecting tube 30, one end of the connecting tube 30 is connected to the sheath 20, and the other end is connected to the through port 12, so that the sheath 20 is connected to the inlet 111. After the flushing fluid is injected into the body through the instrument tube 11 of the endoscope 10, it passes through the reflux channel 110 between the sheath 20 and the insertion part, and is discharged through the connecting tube 30 carrying gravel or tissue debris, thereby forming a circulating flushing path. Through the flexible design of the connecting tube 30, the relative position of the sheath 20 and the suction valve 400 can be adjusted according to the surgical requirements, thereby improving the operational flexibility of the system. The suction valve 400 of the endoscope 10 can periodically change the flow rate of the flushing fluid in the connecting tube 30 during the suction process by combining with the pulse component to form a pulse effect.

[0112] The components of the implantation system (sheath 20, endoscope 10, connecting tube 30) can be modularly designed to facilitate combination or replacement according to different surgical scenarios. For example, in urological surgery, sheaths 20 and connecting tubes 30 of different diameters or lengths can be selected to adapt to the anatomical structures of different patients.

[0113] The insertion system combines the sheath 20, the endoscope 10 and the connecting tube 30, simplifies the layout of surgical instruments, and realizes the unification of flushing, suction and lithotripsy removal functions. The design of the suction valve 400 and the connecting tube 30 enables the operator to complete multiple operations in a single system without frequent instrument changes, thus reducing intraoperative intervention. With the guiding effect of the connecting tube 30 and the pulse effect of the suction valve 400, it helps to quickly remove lithotripsy and avoid interruption of surgery or complications caused by lithotripsy blockage.

[0114] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A suction valve, applied to an endoscope (10) and / or a sheath tube (20), wherein the endoscope (10) comprises an instrument tube (11), characterized in that: The suction valve comprises a valve body (410) and a valve stem (420); the valve body (410) has a valve cavity (414); the valve body (410) is provided with an atmospheric port (411), a sample port (412) and a negative pressure port (413) which are in communication with the valve cavity (414); the valve stem (420) is movably arranged on the valve body (410) to switch between a closed position and a suction position; when the valve stem (420) is in the closed position, the atmospheric port (411) can be in communication with the negative pressure port (413); when the valve stem (420) is in the suction position, the sample port (412) can be in communication with the negative pressure port (413); and further comprises: A connecting portion (100), the connecting portion (100) being a valve body (410), the connecting portion (100) having a channel (110), the channel (110) having an inlet (111) and an outlet (112), the inlet (111) being used to communicate with the instrument tube (11) and / or the sheath tube (20); a shielding member (200) disposed at the connecting portion (100) and located between the inlet (111) and the outlet (112), the shielding member (200) having a first state and a second state; The outlet (112) is in communication with the sample port (412); a driving member (300) is disposed on the valve body (410); when the valve stem (420) moves, the driving member (300) can be triggered to switch the shielding member (200) between a first state and a second state, and the shielding state can be periodically changed in the channel (110) through the action of the driving member (300); Wherein, when the shielding member (200) is in the first state, the channel (110) is completely open; when the shielding member (200) is in the second state, at least part of the channel (110) is blocked; The shielding member (200) comprises an airbag (210), wherein the airbag (210) is arranged in the passage (110); the airbag (210) comprises at least two bladder units (211), and adjacent bladder units (211) are arranged in communication with each other; at least two bladder units (211) are arranged along a direction from an inlet (111) to an outlet (112), and from the inlet (111) side to the outlet (112) side, the expansion pressure of the bladder units (211) gradually decreases or increases, so as to achieve expansion or contraction one by one and generate pulse fluctuations.

2. A suction valve according to claim 1, characterized in that: The driving member (300) is used to inflate or deflate the airbag (210); When the shielding member (200) is in a first state, the airbag (210) is not inflated, so that the channel (110) is fully opened; when the shielding member (200) is in a second state, the airbag (210) is inflated, so that at least part of the channel (110) is blocked.

3. A suction valve according to claim 2, characterized in that: The airbag (210) is arranged to extend along the circumference of the channel (110).

4. A suction valve according to claim 3, characterized in that: A transition membrane (212) is connected between the capsule unit (211) on the side close to the outlet (112) and the capsule unit (211) on the side close to the inlet (111), and the transition membrane (212) is located on the side of the capsule unit (211) close to the center of the channel (110); And / or, the driving member (300) comprises an inflatable bag (210) body, the inflatable bag (210) body is connected to the airbag (210), when an external force presses the inflatable bag (210) body, the inflatable bag (210) body is deformed to inflate the airbag (210); when the external force is removed, the inflatable bag (210) body returns to its original state, and the gas in the airbag (210) is extracted into the inflatable bag (210) body.

5. A suction valve according to claim 4, characterized in that: The flow area at the connection between the inflatable bladder (210) and the bladder unit (211) is greater than the flow area at the connection between adjacent bladder units (211).

6. A suction valve according to claim 5, characterized in that: The valve body (410) further comprises a valve bonnet (430), wherein the valve bonnet (430) is arranged on the valve body (410), the valve bonnet (430) comprises a pressing portion (431), the pressing portion (431) is elastic, the air port (411) is arranged on the pressing portion (431), and the valve bonnet (430) is connected to the valve stem (420); When the pressing portion (431) is pressed by an external force, the pressing portion (431) can undergo elastic deformation, thereby closing the air port (411) and allowing the valve stem (420) to move.

7. A suction valve according to claim 6, characterized in that: The valve cap (430) and / or the valve body (410) comprises an elastic limiting portion (432), and the elastic limiting portion (432) is in contact with the elastic limiting portion (432) on the moving path of the valve stem (420) when the valve stem (420) is in the suction position; When the valve stem (420) is in the suction position, the valve stem (420) can push the elastic limiting portion (432) to deform so as to switch between the first pulse position and the second pulse position; when the valve stem (420) switches between the first pulse position and the second pulse position, the driving member (300) can be triggered so as to switch the shielding member (200) between the first state and the second state.

8. An endoscope, characterized in that: It comprises the suction valve (400) as described in any one of claims 6 to 7.

9. An implantation system, characterized in that: It comprises a sheath tube (20) and the endoscope (10) according to claim 8; and further comprises a connecting tube (30), one end of the connecting tube (30) being connected to the sheath tube (20), and the other end of the connecting tube (30) being connected to the inlet (111).

Images