Vortex assembly, insertion part and endoscope

Abstract

The invention provides a vortex assembly, an insertion part and an endoscope, and relates to the field of medical instruments.The vortex assembly comprises a flow guide plate, the flow guide plate is arranged in an operation channel and used for enabling at least part of the operation channel to form a spiral flow channel, and therefore liquid flowing through the flow guide plate flows along a spiral path; compared with the prior art, the calculus flushing device has the advantages that calculus flushing can be completed within a short time, calculus can be quickly discharged, the problem of unsmooth discharging caused by calculus retention is solved to a certain extent, and the calculus flushing device is convenient to use and high in practicability. Therefore, the operation time is effectively shortened, the risk and discomfort of a patient are reduced, and the safety and efficiency of the operation are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an eddy current component, an insertion part and an endoscope. 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 vortex component, an insertion portion and an endoscope.

[0005] In a first aspect, the present application provides an eddy current component, which adopts the following technical solution: A vortex component is applied to an endoscope, wherein the insertion portion of the endoscope has an operation channel for passing instruments, and the vortex component includes a guide plate; The guide plate is arranged in the operating channel, and is used to make at least a part of the operating channel form a spiral flow channel, so that the liquid flowing through the guide plate flows along a spiral path; A flow passage is formed between the guide plate and the operating channel, and the instrument can pass through the flow passage.

[0006] Preferably, the guide plate is movably arranged in the operating channel, and the guide plate has a first state and a second state; When the guide plate is in the first state, the guide plate is attached to the inner wall of the operation channel so that the cross-sectional area of ​​the flow channel is not less than the cross-sectional area of ​​the device; When the guide plate is in the second state, the guide plate causes at least a portion of the operating channel to form a spiral flow channel; The guide plate is connected to a driving member, and the driving member can switch the guide plate between a first state and a second state.

[0007] Preferably, when the guide plate is in the second state, the cross-sectional area of ​​the flow passage is less than, equal to or greater than the cross-sectional area of ​​the device; And / or, the guide plate is at least partially made of a memory alloy, and the driving member is used to heat the memory alloy, and the memory alloy can switch the guide plate from the first state to the second state after being heated.

[0008] Preferably, the surface of the memory alloy is coated with a thermal insulation layer; And / or, the guide plate is provided with reinforcing ribs; And / or, at least a portion of the guide plate is elastic, and the guide plate can be deformed under the push of the instrument to increase the cross-sectional area of ​​the operating channel to allow the instrument to pass through.

[0009] Preferably, the reinforcing rib extends along an extension direction of the operating channel.

[0010] Preferably, the vortex assembly further comprises a support member, the guide plate is arranged on the support member, and the support member is arranged in the operating channel; And / or, the guide plate is located at the distal end of the operating channel.

[0011] Preferably, an instrument tube is provided in the operation channel, an instrument channel for the instrument to pass through is formed in the instrument tube, the support member and the guide plate form the flow channel, and when the guide plate is in the second state, the cross-sectional area of ​​the flow channel is consistent with the cross-sectional area of ​​the instrument channel; And / or, the support member is at least partially made of an electrothermal material, the guide plate is at least partially made of a memory alloy, and the driving member includes a wire connected to the support member, and when the wire is energized, the support member can be heated to cause the memory alloy to deform due to the heat; And / or, a splicing seam is formed between the guide plate and the support member, and when the guide plate is in a first state, the splicing seam is closed, and when the guide plate is in a second state, the splicing seam is opened; an elastic membrane is arranged between the guide plate and the support member, and when the guide plate switches from the first state to the second state, the elastic membrane can be deformed under the pull of the guide plate.

[0012] Preferably, the support member near the joint is provided with a reserved deformation zone, and the elastic membrane in the reserved deformation zone is not bonded to the support member; And / or, a guiding slope is provided at the joint between the guide plate and the support member, so that the guide plate can be more easily docked with the support member when switching between the first state and the second state.

[0013] In a second aspect, the present application provides an insertion portion, which adopts the following technical solution: An insert portion includes the eddy current component described in the above technical solution, the insert portion includes an operating channel, and the eddy current component is installed in the operating channel.

[0014] In a third aspect, the present application provides an endoscope, which adopts the following technical solution: An endoscope comprises an insertion portion as described in the above technical solution.

[0015] The present invention has the following advantages and beneficial effects: The guide plate of the present invention can guide the flushing fluid flowing through the operating channel to flow in a spiral direction, thereby optimizing the flushing effect of the stones. Specifically, during the flushing process, after the flushing fluid enters the operating channel, a spiral flow is formed under the action of the guide plate. After the flushing fluid with spiral flow enters the body, it will produce a strong disturbance effect and cause local liquid pressure changes, which will help loosen and push the stones and improve the efficiency of stone removal. As a result, the stone flushing can be completed in a shorter time, and the stones can be quickly discharged, avoiding the problem of poor removal caused by stone retention to a certain extent. In addition, the design effectively shortens the operation time, reduces the risk and discomfort of patients, and improves the safety and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 is a first schematic diagram of an eddy current assembly according to an embodiment of the present application; Figure 2 is a second schematic diagram of an eddy current assembly according to an embodiment of the present application; Figure 3 This is a first schematic diagram of an eddy current component hiding an elastic membrane according to an embodiment of the present application; Figure 4 is a second schematic diagram of an eddy current component hiding an elastic membrane according to an embodiment of the present application; Figure 5 is a front view of the eddy current assembly of the embodiment of the present application when it is in the second state; Figure 6 is a front view of the eddy current assembly of the embodiment of the present application when it is in the first state; Figure 7 It is a schematic diagram of the partial structure of the insertion part of the embodiment of the present application; Figure 8is a partial cross-sectional view of the insertion portion of an embodiment of the present application; Fig. 9 It is a schematic diagram of the structure of the endoscope according to an embodiment of the present application.

[0018] The markings in the figure are: 10. Endoscope; 11. Insertion part; 11a. Operation channel; 11b. Instrument tube; 11c. Instrument channel; 100. Guide plate; 110. Flow channel; 120. Reinforcement rib; 130. Guide slope; 200. Drive member; 210. Wire; 300. Support member; 310. Joint seam; 320. Elastic membrane; 330. Reserved deformation zone. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] 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".

[0022] In urinary system lithotripsy, especially percutaneous nephrolithotomy (PCNL), an endoscope is usually passed through a sheath into the renal pelvis. After the stones are broken up by laser, the flushing fluid and the gravel are discharged through the reflux channel formed between the endoscope and the sheath. However, in actual operation, gravel deposits often occur. These deposits may block the operation area, not only interfering with subsequent lithotripsy operations, but also reducing the efficiency of the operation. Therefore, it is usually necessary to use flushing fluid to remove most of the gravel before continuing the lithotripsy operation.

[0023] The inventors found that traditional flushing fluids usually maintain a steady, single flow state during the flushing process, with a flow rate and direction that is basically constant, and this state often makes it difficult to generate sufficient impact force to effectively remove all stones. In a steady flow state, the force exerted by the liquid on the stones is single and stable, and it is difficult to overcome the resistance caused by the irregular shape of the stones, the rough surface, or the embedded tissue folds; at the same time, in the depressions or blind spots of the surgical area, the steady flow state is prone to stagnation, making it difficult for the stones in these areas to be reached or transported by the flushing fluid. The combined effect of these factors makes the traditional steady flow flushing fluid less efficient in removing stones, prolonging the flushing time and increasing patient discomfort.

[0024] In order to solve the above problems, the present invention provides a vortex component that can transform the originally stable flushing fluid into a vortex state, thereby significantly enhancing the disturbance and impact effect of the liquid. When the flushing fluid forms a vortex, its variable flow rate and flow direction can generate greater impact force, promote the loosening and transportation of stones, improve the removal efficiency, shorten the operation time, and reduce patient risks and discomfort. This flow state adjustment design shows significant advantages in complex surgical environments and provides a more efficient and safe solution for lithotripsy.

[0025] The following is combined with Figures 1 to 9 , an eddy current component, an insertion part and an endoscope provided by the present application are described in detail through specific embodiments and their application scenarios.

[0026] A first aspect of this embodiment describes a vortex component in detail.

[0027] Reference Figure 7 , Fig. 9 The embodiment of the present application discloses an eddy current component, which is applied to an endoscope 10. The endoscope 10 includes an insertion portion 11, and the insertion portion 11 has an operation channel 11a for passing instruments. In use, the distal end of the insertion portion 11 is inserted into the patient's lesion area, and the handle position of the endoscope 10 is connected to a flushing liquid, which enters the body from the distal end of the insertion portion 11 through the operation channel 11a, thereby achieving a flushing operation for stones.

[0028] For example, refer to Figure 7 , Figure 8 The operation channel 11a is provided with an instrument tube 11b, and the instrument tube 11b is provided with an instrument channel 11c. The instrument tube 11b can provide a stable working environment so that external instruments can enter the body through the instrument tube 11b to complete the surgical operation. For example, a laser lithotripsy component can enter the body through the instrument tube 11b to perform lithotripsy on the stones in the body. In some embodiments, the insertion portion 11 may also include a camera and a light source to provide visual operation, so that the operator can perform precise operations during the operation.

[0029] In some embodiments, reference Figure 1 , Figure 8 The vortex component is arranged in the operating channel 11a, and the vortex component can make the flushing liquid form a vortex flow state, thereby enhancing the flushing and transporting effect of the liquid on the stones. It should be noted that the design of the vortex component does not absolutely guarantee that all stones are completely removed in a short time, but it improves the efficiency of stone removal to a certain extent and reduces the removal time, which is beneficial to shorten the operation time and reduce the risk and discomfort of the patient.

[0030] In some embodiments, the vortex component is disposed at the distal end of the operating channel 11a (i.e., the distal end of the insertion portion 11). This configuration allows the flushing liquid to enter the body faster after the vortex is formed by the diversion, thereby helping to improve the flushing effect of the stones in the body to a certain extent. In contrast, when the vortex component is disposed at the middle section or proximal end of the insertion portion 11, the flushing liquid may be attenuated during the flow in the spiral direction, resulting in insufficient spiral disturbance effect and difficulty in fully exerting the cleaning effect.

[0031] In some embodiments, reference Figure 1 , Figure 2 , the vortex assembly includes a guide plate 100. The guide plate 100 is arranged in the operating channel 11a, and is used to form a spiral flow channel for at least part of the operating channel 11a, so that the liquid flowing through the guide plate 100 flows along a spiral path. For example, the guide plate 100 extends and distributes along the spiral direction in the operating channel 11a, and two or more guide plates 100 can be arranged in the operating channel 11a. When the flushing liquid flows through the guide plate 100 area, since the guide plate 100 is arranged in the spiral direction, it intersects with the flow velocity direction of the flushing liquid flowing along the axial direction of the operating channel 11a, and the flushing liquid flows in a spiral shape under the guidance of the guide plate 100.

[0032] Specifically, the guide plate 100 can change the flow direction of the flushing liquid to a certain extent, so that the liquid forms a spiral flow. This vortex state is beneficial to improving the ability of the flushing liquid to disturb and carry stones, thereby helping to loosen and discharge stones. In a complex surgical environment, the design of the vortex component helps to enhance the disturbance effect of the liquid, especially when the space is narrow or there is a recessed area, the spiral flow can reduce the stagnation phenomenon to a certain extent and promote the effective removal of stones.

[0033] Exemplarily, the guide plate 100 may be made of materials such as plastic, rubber and / or metal, and its main function is to guide the flow of flushing fluid. Meanwhile, the selected material should meet the requirements of biocompatibility.

[0034] In some embodiments, reference Figure 5 , Figure 6, a flow passage 110 is formed between the guide plate 100 and the operating channel 11a, and the instrument can pass through the flow passage 110. There are multiple guide plates 100, and when the multiple guide plates 100 are distributed along the circumference of the operating channel 11a, the space formed between them is the flow passage 110, that is, the flow passage 110 is surrounded by multiple guide plates 100 in the operating channel 11a. It should be pointed out that the guide plates 100 can be arranged in various ways, for example, they can be arranged in sections in the operating channel 11a, only at the far end of the operating channel 11a, or all along the entire operating channel 11a.

[0035] In order to accommodate the passage of instruments, the guide plate 100 can be designed to be movable relative to the operating channel 11a, so that it can move appropriately when the instrument enters the operating channel 11a, thereby increasing the space of the flow passage 110 and facilitating the smooth entry of the instrument; or, by controlling the size of the guide plate 100, it is ensured that the size of the flow passage 110 formed by it is always larger than the size of the instrument, so that the instrument can pass through without the need for the guide plate 100 to move, thereby facilitating the lithotripsy operation. In addition, the guide plate 100 can also be set to be elastic, so that it can be appropriately deformed when the instrument passes through, thereby avoiding obstruction to the passage of the instrument.

[0036] According to an alternative embodiment, referring to Figure 3 , Figure 8 , the guide plate 100 can be movably arranged in the operating channel 11a, and the guide plate 100 has a first state and a second state. Exemplarily, the movable arrangement of the guide plate 100 can adopt a rotating mechanism, that is, the guide plate 100 is directly connected to the inner wall of the operating channel 11a by rotation, or is connected to other components installed in the operating channel 11a by rotation. After adopting this structural design, the guide plate 100 can rotate or deform when pushed by an instrument or other external driving member 200, thereby achieving switching from the first state to the second state to a certain extent. In some embodiments, the guide plate 100 is at least partially made of elastic material. This design is beneficial to the deformation of the guide plate 100 under the action of external force, thereby promoting smoother state transition.

[0037] Reference Figure 2 When the guide plate 100 is in the first state, the guide plate 100 is attached to the inner wall of the operating channel 11a so that the cross-sectional area of ​​the flow channel 110 is not less than the cross-sectional area of ​​the instrument. The purpose of this design is that when the instrument is in the operating channel 11a or when the flushing liquid does not need to form a vortex motion in a spiral direction, the guide plate 100 can be basically retracted to reduce interference with the flow of the flushing liquid and the passage of the instrument. It should be noted that "attachment" here is not an absolute restriction, but means that in this state the guide plate 100 is basically arranged along the inner wall of the channel, which is beneficial to maintaining a stable flow state of the flushing liquid without actively guiding the formation of vortices.

[0038] Reference Figure 1 , when the guide plate 100 is in the second state, the guide plate 100 causes at least part of the operating channel 11a to form a spiral flow channel. In this state, the guide plate 100 occupies or extends into the part close to the central axis of the operating channel 11a, so that the flushing fluid passing through this area flows in a spiral shape under the guidance of the guide plate 100. This spiral flow state is beneficial to improving the disturbance effect and carrying capacity of the flushing fluid, thereby promoting the loosening and discharge of stones to a certain extent. It should be noted that the "forming of a spiral flow channel" mentioned here means that under the action of the structure of the guide plate 100, the flow direction and local flow velocity of the liquid change, and it does not exert a uniform effect on the entire operating channel 11a, but focuses on guiding the flow trajectory of the flushing fluid.

[0039] The guide plate 100 is connected to a driving member 200, and the driving member 200 can switch the guide plate 100 between the first state and the second state. Exemplarily, the driving member 200 can be a pull rope or other driving mechanism, and drive the guide plate 100 to change state through an external or built-in control component. This driving structure is beneficial for adjusting the state of the guide plate 100 as needed during surgery, thereby meeting the requirements for the passage of instruments in different time periods and promoting the formation of effective vortexes in the flushing fluid to improve the stone removal effect.

[0040] In general, in this embodiment, the structural design and state switching mechanism of the guide plate 100 realize the dynamic regulation of the flow state in the operating channel 11a to a certain extent: in the first state, the guide plate 100 is basically retracted to facilitate the smooth passage of the instrument; in the second state, the guide plate 100 guides the flushing liquid to form a spiral flow, which is beneficial to increase the liquid disturbance effect, thereby promoting the loosening and discharge of stones. This reasoning process between structure and effect provides a more reasonable technical solution for taking into account both the passage of instruments and the flushing efficiency in lithotripsy, and is also beneficial to improving the surgical effect in complex surgical environments.

[0041] According to an alternative embodiment, referring to Figure 5 , Figure 6 When the guide plate 100 is in the second state, the cross-sectional area of ​​the flow channel 110 is less than, equal to, or greater than the cross-sectional area of ​​the device. Different size designs of the flow channel 110 have different effects on the operation and flushing effect. The following describes the structure of each solution and the derivation process of its effect: When the cross-sectional area of ​​the flow passage 110 is smaller than the cross-sectional area of ​​the instrument, in order to avoid interference of the guide plate 100 with the instrument during lithotripsy or other operations, it is usually necessary to switch the guide plate 100 to the first state through the driving member 200. In the first state, the guide plate 100 fits the inner wall of the operating channel 11a, so that the actual accommodation area of ​​the channel is not less than the minimum cross-sectional area required by the instrument, which is beneficial for the instrument to smoothly enter the operating channel 11a. Subsequently, when the instrument is in place for lithotripsy, the guide plate 100 can be switched back to the second state through the driving member 200. At this time, the guide plate 100 is partially in contact with the instrument, which not only achieves the effect of diverting the flushing liquid to form a vortex, but also provides fixed and stable support for the instrument to a certain extent. In order to reduce the extrusion of the instrument, the present scheme preferably adopts a guide plate 100 with certain elastic properties, so that it can be appropriately deformed when subjected to force, thereby reducing the extrusion effect when the instrument passes.

[0042] When the cross-sectional area of ​​the flow channel 110 is equal to the cross-sectional area of ​​the instrument, the use of the instrument when entering the operating channel 11a is similar to when the cross-sectional area of ​​the flow channel 110 is smaller than the cross-sectional area of ​​the instrument, that is, the guide plate 100 is in the first state during the passage of the instrument to ensure sufficient passage space. However, since the channel size just matches the instrument, this design is beneficial for fixing the instrument during the lithotripsy process, thereby reducing the operational inconvenience caused by the shaking of the instrument. At the same time, when the guide plate 100 switches to the second state, it can guide the flushing liquid to form an effective spiral flow without causing excessive mechanical extrusion on the instrument, thereby helping to prevent the instrument from being damaged due to compression.

[0043] When the cross-sectional area of ​​the flow passage 110 is larger than the cross-sectional area of ​​the instrument, the instrument can smoothly enter the operating channel 11a regardless of whether the guide plate 100 is in the first state or the second state. In practical applications, in order to facilitate the rapid insertion of the instrument into the body, the guide plate 100 is usually kept in the first state during the instrument insertion process to increase the size of the flow passage 110; after the instrument is in place, the guide plate 100 is switched to the second state to play a guiding role and guide the flushing fluid to form a vortex. At this time, the larger channel space not only ensures the flushing fluid diversion effect, but also allows the instrument to maintain a certain degree of freedom during the lithotripsy process, so that the position can be quickly adjusted as needed.

[0044] It is understandable that, since the flushing fluid is also needed to discharge the broken stones during the lithotripsy process, the guide plate 100 still needs to function after the instrument enters the body, which is beneficial to accelerate the efficiency of stone removal. In addition, the lithotripsy operation can be performed first, and then the instrument can be withdrawn and flushed with the flushing fluid. At this time, there is no instrument obstruction in the operating channel 11a, and the flow area is larger, which helps to provide a better flushing effect to a certain extent.

[0045] It should be noted that the above-mentioned "device cross-sectional area" refers to the maximum cross-sectional area that the device needs to pass through when passing through the flow channel 110. Since the actual cross-sectional area of ​​the device may change locally when the device moves along its axial direction, the cross-sectional area described here refers to the maximum area that the device needs to pass through at the flow channel 110.

[0046] According to an alternative embodiment, referring to Figure 3 , Figure 4 The guide plate 100 is at least partially made of a memory alloy, and the driving member 200 is used to heat the memory alloy. After the memory alloy is heated, the guide plate 100 can be switched from the first state to the second state. By utilizing the thermal shape memory property of the memory alloy, the control method of switching the state of the guide plate 100 can be simplified to a certain extent, and the additional mechanical transmission structure can be reduced, thereby improving the convenience and response speed of operation.

[0047] During use, when the state of the guide plate 100 needs to be switched, the memory alloy can be heated by the driving member 200 to deform it, thereby driving the guide plate 100 to switch from the first state to the second state, forming a spiral flow channel to guide the flushing liquid to flow in a spiral direction. When the heating of the memory alloy is stopped, as the temperature of the memory alloy decreases, its material properties enable the guide plate 100 to return to its original state, that is, return to the first state, so that the cross-sectional area of ​​the operating channel 11a is restored, so that the instrument can pass or adjust the flushing liquid flow pattern.

[0048] This design can avoid complex mechanical adjustment mechanisms, making the switching process of the guide plate 100 more reliable and responsive. At the same time, during the resetting process of the guide plate 100, the self-recovery characteristics of the memory alloy are utilized to reduce the additional drive requirements, thereby improving the overall reliability of the system. In addition, during the operation, this solution can achieve precise adjustment of the state of the guide plate 100 by controlling the heating time and temperature to meet different flushing and lithotripsy requirements.

[0049] According to an optional embodiment, the surface of the memory alloy is coated with a heat preservation layer, which can reduce the heat removal effect of the flushing liquid on the memory alloy, avoid affecting the phase change ability of the memory alloy due to temperature reduction, and ensure that the guide plate 100 can reliably switch states.

[0050] According to an alternative embodiment, referring to Figure 2 , Figure 3 The guide plate 100 is provided with reinforcing ribs 120. The provision of the reinforcing ribs 120 can improve the rigidity of the guide plate 100 during use, avoid excessive deformation when the flushing liquid flows or the instrument contacts, and can play a certain supporting role to prevent the guide plate 100 from being displaced due to the flushing of the liquid.

[0051] According to an optional embodiment, at least part of the guide plate 100 is elastic, and the guide plate 100 can be deformed when pushed by the instrument to increase the cross-sectional area of ​​the operating channel 11a, thereby allowing the instrument to pass through. Exemplarily, the part of the guide plate 100 that contacts or approaches the instrument can be made of rubber material, which not only helps to reduce wear on the surface of the instrument, but also can be deformed to a certain extent when the instrument is pushed, so as to avoid the instrument from being stuck due to excessive squeezing.

[0052] According to an optional embodiment, the reinforcing rib 120 extends along the extension direction of the operating channel 11a, which helps to reduce the impact on the flow velocity of the flushing liquid and optimize the spiral flow effect of the flushing liquid to a certain extent, thereby enhancing the disturbing force of the eddy current on the stone and the flushing effect.

[0053] According to an alternative embodiment, referring to Figure 3 , Figure 4 The vortex assembly further includes a support member 300, the guide plate 100 is disposed on the support member 300, and the support member 300 is disposed in the operating channel 11a. Through the design of the support member 300, the installation method of the guide plate 100 can be optimized to a certain extent, the assembly efficiency can be improved, and the stability of the overall structure can be improved.

[0054] Specifically, the support member 300 can adopt an integrally formed annular structure, frame structure or bracket structure, so that the multiple guide plates 100 can be evenly distributed in the circumferential or axial direction of the operating channel 11a, and are integrally installed in the operating channel 11a through the support member 300. Compared with installing each guide plate 100 separately on the inner wall of the operating channel 11a, this method can reduce the installation steps, improve the assembly efficiency, and reduce the deviation of the guide plate 100 during installation to a certain extent.

[0055] In addition, the support member 300 can also provide additional structural support to enhance the stability of the guide plate 100 during the flow of the flushing liquid, and avoid the loosening or displacement of the guide plate 100 due to the impact of the flushing liquid or the passage of the instrument. In some schemes, the support member 300 can be made of elastic material or a deformable structure to adapt to the shape of the inner wall of the operating channel 11a, ensure the firmness of the installation, and reduce the impact on the instrument to a certain extent. For example, the support member 300 can adopt a mesh or hollow design to reduce the obstruction to the flow of the flushing liquid, while still effectively supporting the guide plate 100, so that the flushing liquid forms a stable spiral flow when passing through the guide plate 100, thereby improving the flushing effect.

[0056] According to an alternative embodiment, referring to Figure 7 , Figure 8The guide plate 100 is located at the far end of the operating channel 11a, so that the flushing liquid can quickly form a spiral flow and enter the body after being guided by the guide plate 100, thereby reducing the energy loss on the flow path to a certain extent, reducing the attenuation of the spiral flow, and improving the flushing effect.

[0057] Through this arrangement, the kinetic energy of the flushing fluid can be more directly used to disturb and transport the stones, which helps to improve the stone removal efficiency after crushing. In particular, when the operating channel 11a is long, if the guide plate 100 is arranged in the middle or proximal end of the operating channel 11a, the flushing fluid may weaken the spiral flow due to friction resistance, flow rate attenuation and other factors after passing a long distance, thereby reducing the flushing and removal effect of the stones. Therefore, setting the guide plate 100 at the distal end of the operating channel 11a can optimize the formation conditions of the spiral flow to a certain extent and improve the overall efficiency of the surgical operation.

[0058] According to an optional embodiment, an instrument tube 11b is provided in the operation channel 11a, and an instrument channel 11c for the passage of the instrument is formed in the instrument tube 11b. The support member 300 and the guide plate 100 enclose a flow channel 110. When the guide plate 100 is in the second state, the cross-sectional area of ​​the flow channel 110 is consistent with the cross-sectional area of ​​the instrument channel 11c. This design can optimize the passage environment of the instrument to a certain extent, and reduce the problem of the instrument being stuck or passing poorly due to the mismatch between the cross-sectional areas of the flow channel 110 and the instrument channel 11c. For example, when the cross-sectional area of ​​the instrument channel 11c is large and the cross-sectional area of ​​the flow channel 110 is small, the instrument may be stuck at the intersection of the instrument channel 11c and the flow channel 110, affecting the flexibility of operation. If the cross-sectional area of ​​the flow channel 110 is large, a mutation area may be formed, resulting in uneven support of the instrument, affecting stability.

[0059] In addition, the design can ensure that the flushing liquid can flow smoothly through the flow channel 110 when the guide plate 100 is in the second state, and no obvious flow rate change or vortex abnormality will be formed at the junction of the instrument channel 11c and the flow channel 110, so that the spiral flow of the flushing liquid is more stable and the flushing effect of the stone is improved. In some schemes, the instrument tube 11b can be made of a smooth material or coated with a low-friction coating to further optimize the passing performance of the instrument, reduce the operating resistance, and improve the convenience and efficiency of the lithotripsy.

[0060] According to an optional embodiment, the support member 300 is at least partially made of an electrothermal material, the guide plate 100 is at least partially made of a memory alloy, and the driving member 200 includes a wire 210 connected to the support member 300. When the wire 210 is energized, the support member 300 can be heated to allow the memory alloy to deform due to heat. By integrating the electrothermal material in the support member 300, the heating efficiency of the guide plate 100 can be optimized to a certain extent. Compared with directly heating the memory alloy by electricity, the electrothermal conversion efficiency of the memory alloy is relatively low due to its low resistance. By using the electrothermal material as at least part of the support member 300, the electrical energy can be more efficiently converted into thermal energy and transferred to the memory alloy, so that it can quickly reach the corresponding temperature and achieve shape change.

[0061] In addition, the design can reduce the need for complex external heating equipment, making the switch of the guide plate 100 more convenient. In specific implementation, the electric heating material can be a high resistivity metal or conductive polymer, such as nickel-chromium alloy, carbon-based conductive material, etc., so as to achieve efficient heating. The electric heating part of the support member 300 can be partially coated or embedded as needed to optimize the overall heating efficiency while avoiding unnecessary heat diffusion affecting the performance of other components.

[0062] Furthermore, in some schemes, the degree of heating of the support member 300 can be controlled by adjusting the current or voltage, thereby achieving precise adjustment of the temperature of the memory alloy, ensuring that the guide plate 100 completes state switching within a suitable temperature range, and avoiding material performance degradation due to overheating or affecting other components in the operating channel 11a.

[0063] According to an alternative embodiment, referring to Figure 3 , Figure 6 A joint seam 310 is formed between the guide plate 100 and the support member 300. When the guide plate 100 is in the first state, the joint seam 310 is closed. When the guide plate 100 is in the second state, the joint seam 310 is opened. An elastic membrane 320 is arranged between the guide plate 100 and the support member 300. When the guide plate 100 switches from the first state to the second state, the elastic membrane 320 can be deformed under the pull of the guide plate 100.

[0064] When the guide plate 100 is in the first state, the joint seam 310 is open, and the guide plate 100 is convenient to move relative to the support member 300 through the joint seam 310. When the guide plate 100 is in the second state, the joint seam 310 is closed, thereby forming a continuous flow passage 110, which is convenient for instruments to pass through.

[0065] In order to further optimize the state switching process of the guide plate 100, an elastic film 320 is provided between the guide plate 100 and the support member 300. The elastic film 320 can deform with the movement of the guide plate 100 when the guide plate 100 switches from the first state to the second state, thereby playing a buffering role to prevent the guide plate 100 from moving too fast and affecting the equipment. For example, when the guide plate 100 is rapidly deployed by the driving member 200, the elastic film 320 can provide a certain damping effect, making the switching process smoother and reducing the impact on the surrounding equipment.

[0066] In addition, the elastic membrane 320 can also optimize the sealing of the joint 310 to a certain extent, so as to prevent the joint 310 from becoming a leakage channel for the flushing liquid when the guide plate 100 is in the first state, thereby affecting the spiral flow effect. In terms of material selection, the elastic membrane 320 can be made of a polymer material with good elasticity, such as silicone, thermoplastic elastomer (TPE) or shape memory elastomer, to ensure that it can still maintain good sealing and buffering effects after multiple deformations. When the guide plate 100 is in the second state, the elastic membrane 320 opens with the guide plate 100 and forms a certain arc or corrugated structure in the flow channel 110, so as to further guide the flow direction of the flushing liquid during the flow process, so that it flows along a spiral trajectory. This auxiliary effect can enhance the vortex effect of the flushing liquid, making it more stable and having a higher flow rate, thereby improving the discharge efficiency of stone fragments.

[0067] Specifically, when the flushing liquid flows along the operating channel 11a, the opened elastic membrane 320 can produce a certain guiding effect when the liquid flows through, making the rotation direction of the liquid flow more uniform and reducing the energy loss caused by turbulence. At the same time, the deformation characteristics of the elastic membrane 320 can also produce a small vibration effect when the flushing liquid impacts, and this vibration can enhance the flushing ability of the flushing liquid on the stone debris to a certain extent, further improving the flushing efficiency.

[0068] In addition, the flexibility of the elastic membrane 320 can also adapt to flushing fluids of different flow rates and pressures, so that the vortex guiding ability of the guide plate 100 can maintain a good effect in different usage scenarios. For example, at low flow rates, the elastic membrane 320 can maintain a certain unfolding shape and guide the flushing fluid to form a stable rotating flow; at high flow rates, the elastic membrane 320 can deform appropriately with the fluid pressure, ensuring that the flushing fluid can still form an effective vortex structure under high pressure conditions, and the vortex will not be destroyed due to excessively high flow rates.

[0069] According to an alternative embodiment, referring to Figure 1 , Figure 3, the support member 300 near the joint 310 is provided with a reserved deformation zone 330, and the elastic membrane 320 of the reserved deformation zone 330 is not bonded to the support member 300. By providing the reserved deformation zone 330 near the joint 310 of the support member 300, the deformation area of ​​the elastic membrane 320 can be effectively increased, and the elastic membrane 320 can be prevented from being damaged by excessive stress in a local area. The advantage of this design is that when the guide plate 100 switches from the first state to the second state, the elastic membrane 320 can be freely expanded or contracted in a larger area, thereby avoiding excessive deformation in a local area, so that the deformation of the elastic membrane 320 can be made more uniform and stable, and the risk of excessive local force can be reduced. By reducing the deformation amount of the elastic membrane 320 per unit area, its durability can be improved, and damage or functional degradation due to frequent deformation during long-term use can be avoided.

[0070] According to an alternative embodiment, referring to Figure 5 , Figure 6 , the guide plate 100 is provided with a guiding bevel 130 at the joint with the support member 300, so that the guide plate 100 can be more easily docked with the support member 300 when switching between the first state and the second state. By providing the guiding bevel 130 at the joint of the guide plate 100 and the support member 300, the guide plate 100 can be switched between the first state and the second state more smoothly, avoiding jamming or unsmoothness. The guiding bevel 130 provides additional guiding force, helping the guide plate 100 to cooperate with the support member 300 more easily, reducing the resistance caused by poor docking. This can effectively improve the convenience of operation, especially in the dynamic switching process, avoiding unnecessary friction or jamming. Through the design of the guiding bevel 130, the contact between the guide plate 100 and the support member 300 becomes smoother, reducing the friction between the two caused by frequent switching, thereby effectively extending the service life of the components and reducing the performance degradation caused by friction loss.

[0071] The second aspect of this embodiment describes an insertion portion 11 in detail.

[0072] Reference Figure 7 , Figure 8, an insertion part 11, including the vortex component of the above technical solution, the insertion part 11 includes an operating channel 11a, and the vortex component is installed in the operating channel 11a. In this way, the insertion part 11 has the beneficial effects of the above-mentioned vortex component, which will not be repeated here. In some schemes, the vortex component is installed at the distal end of the insertion part 11, so that the attenuation of the vortex guiding effect can be minimized, so that the flushing liquid can still maintain a strong spiral flow effect when approaching the lesion area, thereby improving the cleaning ability of the stones. Compared with the method of installing the vortex component in the middle or proximal end of the insertion part 11, the vortex component installed at the distal end can provide a more direct disturbance effect during the liquid flow process, thereby effectively promoting the discharge of stones.

[0073] It is understandable that the installation position, structural design and flow rate of the eddy current assembly are closely related. All these design elements work together to reduce the difficulty and time extension of the operation caused by stone deposition during surgery to a certain extent, thereby improving the efficiency of the operation and reducing the discomfort of the patient. In actual operation, by properly controlling the structure and position of the eddy current assembly, it is possible to ensure that the technical solution exhibits excellent cleaning effects in complex surgical environments.

[0074] A third aspect of this embodiment describes an endoscope 10 in detail.

[0075] Reference Figure 8 , Fig. 9 , an endoscope 10, comprising an insertion portion 11 of the above technical solution. In some schemes, the endoscope 10 includes a handle, the insertion portion 11 is installed on the handle, a camera and an illumination light source are arranged at the distal end of the insertion portion 11, and an instrument insertion port is arranged on the handle, through which the instrument and flushing fluid can be passed into the instrument tube 11b. The combination of the vortex component and the insertion portion 11 of the endoscope 10 enables the entire endoscope 10 device to have stronger flushing ability and operational flexibility when performing medical operations such as stone removal. Furthermore, the vortex component can not only improve the treatment effect by optimizing the flow pattern of the flushing fluid, but also reduce the risk of complications or prolonged operation time caused by improper operation.

[0076] 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. An eddy current component, applied to an endoscope (10), wherein the insertion portion (11) of the endoscope (10) has an operation channel (11a) for passing an instrument, characterized in that: The vortex assembly comprises a guide plate (100); The guide plate (100) is arranged in the operating channel (11a) and is used to form at least a portion of the operating channel (11a) into a spiral flow channel, so that the liquid flowing through the guide plate (100) flows along a spiral path; A flow passage (110) is formed between the guide plate (100) and the operating passage (11a), and the instrument can pass through the flow passage (110).

2. The eddy current component according to claim 1, characterized in that: The guide plate (100) is movably arranged in the operating channel (11a), and the guide plate (100) has a first state and a second state; When the guide plate (100) is in the first state, the guide plate (100) is attached to the inner wall of the operating channel (11a), so that the cross-sectional area of ​​the flow passage (110) is not less than the cross-sectional area of ​​the device; When the guide plate (100) is in the second state, the guide plate (100) causes at least part of the operating channel (11a) to form a spiral flow channel; The guide plate (100) is connected to a driving member (200), and the driving member (200) can switch the guide plate (100) between a first state and a second state.

3. The eddy current component according to claim 2, characterized in that: When the guide plate (100) is in the second state, the cross-sectional area of ​​the flow passage (110) is smaller than, equal to, or larger than the cross-sectional area of ​​the device; And / or, the guide plate (100) is at least partially made of a memory alloy, and the driving member (200) is used to heat the memory alloy, and after the memory alloy is heated, the guide plate (100) can be switched from a first state to a second state.

4. The eddy current component according to claim 3, characterized in that: The surface of the memory alloy is coated with a thermal insulation layer; And / or, the guide plate (100) is provided with reinforcing ribs (120); And / or, at least a portion of the guide plate (100) is elastic, and the guide plate (100) can be deformed under the push of the instrument, so as to increase the cross-sectional area of ​​the operating channel (11a), thereby allowing the instrument to pass through.

5. The eddy current component according to claim 4, characterized in that: The reinforcing rib (120) extends along the extension direction of the operating channel (11a).

6. The eddy current component according to claim 2, characterized in that: The vortex assembly further comprises a support member (300), the guide plate (100) being arranged on the support member (300), and the support member (300) being arranged in the operating channel (11a); And / or, the guide plate (100) is located at the far end of the operating channel (11a).

7. The eddy current component according to claim 6, characterized in that: An instrument tube (11b) is arranged in the operation channel (11a), an instrument channel (11c) for the passage of instruments is formed in the instrument tube (11b), the support member (300) and the guide plate (100) enclose the flow passage (110), and when the guide plate (100) is in the second state, the cross-sectional area of ​​the flow passage (110) is consistent with the cross-sectional area of ​​the instrument channel (11c); And / or, the support member (300) is at least partially made of an electrothermal material, the guide plate (100) is at least partially made of a memory alloy, and the driving member (200) comprises a wire (210) connected to the support member (300), and when the wire (210) is energized, the support member (300) can be heated to cause the memory alloy to deform due to the heat; And / or, a joint seam (310) is formed between the guide plate (100) and the support member (300); when the guide plate (100) is in a first state, the joint seam (310) is closed; when the guide plate (100) is in a second state, the joint seam (310) is open; and an elastic membrane (320) is provided between the guide plate (100) and the support member (300); when the guide plate (100) switches from the first state to the second state, the elastic membrane (320) can be deformed under the pull of the guide plate (100).

8. The eddy current component according to claim 7, characterized in that: The support member (300) near the joint seam (310) is provided with a reserved deformation zone (330), and the elastic membrane (320) of the reserved deformation zone (330) is not bonded to the support member (300); And / or, the guide plate (100) is provided with a guiding slope (130) at the joint with the support member (300), so that the guide plate (100) can be more easily docked with the support member (300) when switching between the first state and the second state.

9. An insertion portion, characterized in that: Comprising the eddy current assembly according to any one of claims 1 to 8, the insert portion (11) comprises an operating channel (11a), and the eddy current assembly is installed in the operating channel (11a).

10. An endoscope, characterized in that: Comprising an insertion portion (11) as claimed in claim 9.

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