Surgical instrument for removing renal artery sympathetic nerves

Abstract

The utility model provides a surgical instrument for removing renal artery sympathetic nerves, and relates to the technical field of medical instruments. According to the surgical instrument for removing renal artery sympathetic nerves, the surgical instrument can be well attached to blood vessels, the risk that the blood vessels are excessively pressed by the surgical instrument can be reduced, and therefore the surgical efficiency and safety can be improved. The surgical instrument for removing renal artery sympathetic nerves comprises an operating assembly, a connecting assembly and a clamping assembly. Wherein the operating assembly is connected with one end of the connecting assembly; the two clamping assemblies are movably connected to the end, away from the operation assembly, of the connecting assembly, the clamping face of each clamping assembly is matched with the shape of an operation object, and after the operation assembly drives the connecting assembly to move so that the connecting assembly can drive the two clamping assemblies to get close to each other, the clamping faces of the two clamping assemblies define a clamping space.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a surgical instrument for removing the sympathetic nerves of the renal artery. Background Technology

[0002] Interventional cardiovascular techniques are commonly used to treat hypertension. By applying radiofrequency energy, ultrasound energy, or injecting heat into the perivascular space, the activity of afferent and efferent renal sympathetic nerves is interrupted. This affects the sympathetic nerves around the renal artery, reducing the stimulation of the kidneys by the sympathetic nervous system, thereby achieving the therapeutic goal of lowering blood pressure.

[0003] Using surgical forceps and other instruments to remove the renal artery sympathetic nerves is a common approach for interventional vascular treatment. However, in these techniques, surgical forceps that remove the renal artery sympathetic nerves can easily cause excessive pressure on the blood vessel, affecting the safety of the procedure, or the forceps may not adhere well to the blood vessel, thus impacting the efficiency of the procedure. Utility Model Content

[0004] This application provides a surgical instrument for removing the sympathetic nerve of the renal artery, which can achieve good fit between the surgical instrument and the blood vessel, and reduce the risk of excessive compression of the blood vessel by the surgical instrument, thereby improving the efficiency and safety of the operation.

[0005] On one hand, this application provides a surgical instrument for renal artery sympathetic nerve removal, which includes: an operating component, a connecting component, and a clamping component. The operating component is connected to one end of the connecting component; two sets of clamping components are movably connected to the end of the connecting component furthest from the operating component. The clamping surface of each set of clamping components matches the shape of the surgical object. After the operating component moves the connecting component, causing the connecting component to bring the two sets of clamping components closer together, the clamping surfaces of the two sets of clamping components enclose and form a clamping space.

[0006] The renal artery sympathetic nerve removal surgical instrument provided in this application connects the clamping component and the operating component via a connecting component, and movably mounts the clamping component on the connecting component. This facilitates the clamping component's clamping of the surgical subject and its conformation to the surgical subject through operation of the operating component. Furthermore, the clamping surface of the clamping component is designed to match the shape of the surgical subject. During the contact process between the clamping surface and the surgical subject, this increases the contact area, which is beneficial for the efficient transfer of energy to the surgical subject. Simultaneously, when the two sets of clamping components approach each other to clamp the surgical subject, the clamping surfaces can enclose and form a clamping space, i.e., a space to accommodate the surgical subject, thereby reducing the pressure exerted by the clamping surfaces on the surgical subject. Therefore, using the renal artery sympathetic nerve removal surgical instrument provided in this application allows for good contact between the surgical instrument and the blood vessel during surgery, while reducing the risk of excessive pressure on the blood vessel by the surgical instrument, thus improving the efficiency and safety of the surgery.

[0007] In one possible implementation of this application, the clamping surface of each set of clamping components is an arc-shaped curved surface.

[0008] In one possible implementation of this application, the clamping space is spindle-shaped when the distal ends of the two sets of clamping components abut each other.

[0009] In one possible implementation of this application, the clamping assembly includes a clamping member and an electrode member; the clamping member includes a connecting portion and a clamping portion; the connecting portion is movably connected to the connecting assembly, the side of the clamping portion facing the clamping space is a first clamping surface, the electrode member is disposed on the clamping portion at the position of the first clamping surface, the side of the electrode member facing the clamping space is an electrode clamping surface, and the electrode clamping surface and the first clamping surface together form a clamping surface.

[0010] In one possible implementation of this application, the clamping assembly has an injection channel that extends from the connection portion to the first clamping surface and / or the electrode clamping surface, and the injection channel is used to deliver liquid.

[0011] In one possible implementation of this application, the injection channel includes an injection trunk line and injection branches. The injection trunk line extends from the connecting portion to the electrode component, and the injection branches are disposed on the electrode component along the clamping direction of the clamping assembly. The injection branches penetrate the electrode clamping surface and connect the injection trunk line and the clamping space.

[0012] In one possible implementation of this application, the electrode has at least two injection branches, which are distributed along the axial direction of the electrode.

[0013] In one possible implementation of this application, the injection trunk line passes through the connecting portion and the clamping portion in sequence, and extends on the clamping portion to the location of the electrode. The clamping portion also has a wire channel, at least a portion of which communicates and overlaps with at least a portion of the injection trunk line.

[0014] In one possible implementation of this application, the clamping member has a wire channel that passes through the connecting portion and extends to the clamping portion, and the wire channel extends from the clamping portion to the location of the electrode member, and the wire channel is used to pass wires through.

[0015] In one possible implementation of this application, the electrode has a first receiving cavity, which is connected to the wire channel and is matched with a temperature sensing element for housing the temperature sensing element.

[0016] In one possible implementation of this application, the electrode has a second receiving cavity that communicates with a wire channel and is matched with a pressure sensing element for accommodating the pressure sensing element.

[0017] In one possible implementation of this application, the second accommodating cavity includes an embedded cavity and a sensing cavity. One end of the embedded cavity is connected to the wire channel. The sensing cavity is disposed on the electrode along the clamping direction of the clamping assembly, and the sensing cavity penetrates the electrode clamping surface to connect the clamping space and the other end of the embedded cavity. The embedded cavity is matched with the pressure detection element and is used to accommodate the pressure detection element. The sensing cavity is used to accommodate the pressure sensing element.

[0018] In one possible implementation of this application, the clamping part has a receiving groove that matches the electrode, and the electrode is disposed in the receiving groove.

[0019] In one possible implementation of this application, one of the clamping part and the electrode has a positioning post, and the other of the clamping part and the electrode has a positioning hole that matches the positioning post. The positioning post or positioning hole extends from the bottom of the receiving groove and cooperates with the positioning hole to limit the position of the electrode relative to the clamping part.

[0020] In one possible implementation of this application, the connecting assembly includes an outer tube and an inner tube, with the inner tube passing through the outer tube. The clamping assembly is rotatably connected to the outer tube, with one end of the inner tube connected to the operating assembly and the other end of the inner tube connected to the clamping assembly via a connecting rod. During the process of the operating assembly driving the inner tube to move relative to the outer tube, the inner tube drives the clamping assembly to rotate relative to the outer tube via the connecting rod. Attached Figure Description

[0021] Figure 1 Schematic diagram of the structure of the surgical instrument for renal artery sympathetic nerve removal provided in this application. Figure 1 ;

[0022] Figure 2 Schematic diagram of the structure of the surgical instrument for renal artery sympathetic nerve removal provided in this application. Figure 2 ;

[0023] Figure 3 Schematic diagram of the clamp structure in the surgical instrument for renal artery sympathetic nerve removal provided in this application. Figure 1 ;

[0024] Figure 4 Provided for this application Figure 3 A cross-sectional view along the AA direction;

[0025] Figure 5 Schematic diagram of the electrode component in the surgical instrument for renal artery sympathectomy provided in this application. Figure 1 ;

[0026] Figure 6 Provided for this application Figure 5 A cross-sectional view along the BB direction;

[0027] Figure 7 Schematic diagram of the clamp structure in the surgical instrument for renal artery sympathetic nerve removal provided in this application. Figure 2 ;

[0028] Figure 8 Schematic diagram of the electrode component in the surgical instrument for renal artery sympathectomy provided in this application. Figure 2 ;

[0029] Figure 9 Schematic diagram of the electrode component in the surgical instrument for renal artery sympathectomy provided in this application. Figure 3 ;

[0030] Figure 10 Provided for this application Figure 9 A cross-sectional view along the DD direction;

[0031] Figure 11 Provided for this application Figure 9 A cross-sectional view along the CC direction.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Connecting assembly; 11-Outer tube; 12-Inner tube; 13-Connecting rod; 2-Clamping assembly; 21-Clamping member; 211-Connecting part; 212-Clamping part; 213-Accommodating groove; 214-Positioning hole; 215-First connecting hole; 216-Second connecting hole; 217-First clamping surface; 22-Electrode; 221-Positioning post; 222-Proximal vertex; 223-Distal vertex; 224-Electrode clamping surface; 23-Clamping space; 3-Infusion channel; 31-Infusion main circuit; 32-Infusion branch circuit; 4-Wire channel; 5-First accommodating cavity; 6-Second accommodating cavity; 61-Embedding cavity; 62-Sensing cavity; 7-Wire; 8-Infusion tube; Y-Clamping direction; Z-Tightening direction. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0035] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0036] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0037] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0038] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0039] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0040] Hypertension is a major risk factor for cardiovascular disease, and increased sympathetic nervous system activity is one of the important pathophysiological factors of hypertension. Renal denervation (RDN) is a percutaneous interventional treatment that mainly uses energy such as radiofrequency and ultrasound to eliminate the afferent and efferent nerves of the renal artery, thus blocking signal transmission between the brain and the sympathetic nervous system to a certain extent. This reduces the excitability of the sympathetic nervous system in hypertensive patients, achieving a long-term stable blood pressure reduction effect with a single minimally invasive surgery.

[0041] Compared to interventional radiofrequency RDN, combining mature laparoscopic technology and radiofrequency ablation technology to design a surgical RDN ablation system based on laparoscopic technology has at least the following advantages: (1) reducing the direct damage of radiofrequency energy to the renal artery intima, reducing the risk of thrombosis and secondary renal artery stenosis (since the sympathetic nerves are mainly distributed in the adventitia of the renal artery); (2) achieving more thorough ablation; and (3) meeting the ablation requirements of renal arteries of various sizes.

[0042] In related technologies, the surgical forceps for removing the renal artery sympathetic nerves provided may cause excessive compression of the blood vessel during the RDN procedure, thus affecting the safety of the operation, or the surgical forceps may not fit well with the blood vessel, thus affecting the efficiency of the operation.

[0043] This application provides a surgical instrument for removing the renal artery sympathetic nerve, referring to... Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 Schematic diagram of the structure of the surgical instrument for renal artery sympathetic nerve removal provided in this application. Figure 1 , Figure 2 Schematic diagram of the structure of the surgical instrument for renal artery sympathetic nerve removal provided in this application. Figure 2 , Figure 3 Schematic diagram of the clamp structure in the surgical instrument for renal artery sympathetic nerve removal provided in this application. Figure 1 , Figure 4 Provided for this application Figure 3 A cross-sectional view along the AA direction.

[0044] The surgical instrument for renal artery sympathetic nerve removal provided in this application includes: an operating component (not shown in the figure), a connecting component 1, and a clamping component 2. The operating component is connected to one end of the connecting component 1; two sets of clamping components 2 are movably connected to the end of the connecting component 1 furthest from the operating component. The clamping surface of each set of clamping components 2 matches the shape of the surgical object. After the operating component moves the connecting component 1, causing the connecting component 1 to bring the two sets of clamping components 2 closer together, the clamping surfaces of the two sets of clamping components 2 enclose and form a clamping space 23.

[0045] In this embodiment, the operating component is used for handheld operation and manipulation of surgical instruments. The operating component can be configured to include a fixed handle and a movable handle. The fixed handle can be fixed to the connecting component 1, and the movable handle can be hinged and rotated on the connecting component 1 at a position corresponding to the fixed handle. The user can hold both the fixed and movable handles and rotate the movable handle relative to the connecting component 1, thereby causing the connecting component 1 to move.

[0046] In this embodiment of the application, the connecting component 1 is used to provide a mounting base for the operating component and the clamping component 2, and to drive the operating component and the clamping component 2 to realize the operation of the clamping component 2 through the operating component.

[0047] For example, the connecting component 1 can be configured to include an outer tube 11 and an inner tube 12. The inner tube 12 can be inserted into the outer tube 11. A portion of each set of clamping components 2 is rotatably connected to the outer tube 11. One end of the inner tube 12 is connected to the operating component, and the other end of the inner tube 12 is connected to each set of clamping components 2 via a transmission connection. In this way, when the operating component drives the inner tube 12 to move relative to the outer tube 11, the inner tube 12 can drive the clamping components 2 to rotate relative to the outer tube 11.

[0048] In another example, the outer tube 11 can be cylindrical, and the inner tube 12 can be cylindrical with an outer diameter smaller than the inner diameter of the outer tube 11. The inner tube 12 can be inserted inside the outer tube 11, allowing it to slide within the outer tube 11. For instance, a fixed handle can be fixedly connected to the outer tube 11, a movable handle can be rotatably connected to the outer tube 11, and the movable handle can be connected to the inner tube 12 via a pull rod or similar means. During the rotation of the movable handle relative to the outer tube 11, the movable handle can drive the inner tube 12 to move relative to the outer tube 11 along the pulling direction Z. The pulling direction Z is the axial direction of the connecting component 1, and can also be understood as the arrangement direction of the connecting component 1 and the clamping component 2.

[0049] Another example, such as Figure 4As shown, a first connecting hole 215 can be provided on the clamping member 21 in each clamping assembly 2. Correspondingly, a third connecting hole corresponding to the first connecting hole 215 can be provided at the far end of the outer tube 11. A fixed shaft matching both the first connecting hole 215 and the third connecting hole can be used. The fixed shaft passes through the first connecting hole 215 and the third connecting hole, thereby rotatably setting both clamping members 21 at the far end of the outer tube 11.

[0050] It should be noted that, in the embodiments of this application, the distal end is the end of the surgical instrument for removing the renal artery sympathetic nerves that is farther away from the operating handle along the traction direction Z, and the proximal end is the end of the surgical instrument for removing the renal artery sympathetic nerves that is closer to the operating handle along the traction direction Z. For example, the distal end of the clamping component 2 is the end of the clamping component 2 that is farther away from the operating handle along the traction direction Z, while the proximal end of the holding component is the end of the clamping component 2 that is closer to the operating handle along the traction direction Z.

[0051] Another example, such as Figure 4 As shown, a second connecting hole 216 can be provided on the clamping member 21 in each set of clamping components 2. The second connecting hole 216 is closer to the connecting component 1 in the pulling direction Z than the first connecting hole 215. Figure 1 As shown, a first connecting shaft can be provided at the distal end of the inner tube 12. The inner tube 12 and the clamping member 21 can be connected by a connecting rod 13, that is, a fourth connecting hole matching the first connecting shaft is provided at the proximal end of the connecting rod 13, thereby hinged the connecting rod 13 and the inner tube 12 through the connecting shaft and the fourth connecting hole. A second connecting shaft matching the second connecting hole 216 can be provided at the distal end of the connecting rod 13, thereby hinged the connecting rod 13 and the clamping member 21 through the second connecting shaft and the second connecting hole 216. In this way, when the movable handle drives the inner tube 12 to move relative to the outer tube 11 in the pulling direction Z, the inner tube 12 can drive the connecting rod 13 to move, and the connecting rod 13 can apply a pulling force or a pushing force in the pulling direction Z to the clamping member 21, thereby causing the two sets of clamping assemblies 2 to rotate relative to the connecting assembly 1.

[0052] In this embodiment, the clamping component 2 is used to clamp the surgical object (such as vascular tissue or nerve tissue) and apply energy to the surgical object to remove it. Figure 1 and Figure 2 As shown, the two sets of clamping components 2 can be moved relative to each other by the operating component and the connecting component 1 to form a clamping space 23 with a large opening. This allows a portion of each set of clamping components 2 to pass through both sides of the surgical object and surround both sides of the surgical object. By operating the operating component, the two sets of clamping components 2 can be brought closer together (the distal ends of the two sets of clamping components 2 can abut against each other) to form a clamping space 23 with a smaller opening. This allows both sets of clamping components 2 to fit snugly against the surgical object.

[0053] For example, the portion of the clamping assembly 2 used to clamp the surgical object (such as a blood vessel) can be configured to match the shape of the surgical object. For instance, the portion of the clamping assembly 2 used to clamp the blood vessel can be configured as an arc structure, so that an approximately circular clamping space 23 can be formed by enclosing two semi-circular clamping assemblies 2, thereby allowing the clamping assembly 2 to fit snugly against the outer peripheral surface of the approximately cylindrical blood vessel.

[0054] In another example, the portion of the clamping assembly 2 used to clamp the surgical object (such as a blood vessel) can be configured as an arc-shaped structure. An arc-shaped structure can be understood as a continuous and smoothly curved structure. For example, this arc-shaped structure can be a single arc segment, or an arc segment formed by connecting at least two arc segments with the same or different radii sequentially. Thus, the surface of the arc-shaped structure facing the clamping space 23 can be used as the clamping surface. This clamping surface is a smooth arc-shaped surface formed by continuous and smooth curvature along the traction direction Z. In this way, regardless of whether the blood vessel is approximately cylindrical or a flat ellipse, the clamping surfaces of the two arc-shaped structures can fit more of the outer surface of the blood vessel.

[0055] The renal artery sympathetic nerve removal surgical instrument provided in this embodiment connects the clamping component 2 and the operating component via a connecting component 1, and movably mounts the clamping component 2 onto the connecting component 1. This facilitates the clamping component 2's clamping of the surgical object and its fit against the object through operation of the operating component. Furthermore, the clamping surface of the clamping component 2 is designed to match the shape of the surgical object. During the contact process between the clamping surface and the surgical object, this increases the contact area, which is beneficial for efficient energy transfer to the surgical object. Simultaneously, when the two sets of clamping components 2 approach each other to clamp the surgical object, the clamping surfaces can enclose and form a clamping space 23, i.e., a space to accommodate the surgical object, thereby reducing the pressure exerted by the clamping surfaces on the surgical object. Therefore, using the renal artery sympathetic nerve removal surgical instrument provided in this embodiment allows for good contact between the surgical instrument and the blood vessel during surgery, while reducing the risk of excessive pressure on the blood vessel, thus improving the efficiency and safety of the surgery.

[0056] In some possible embodiments of this application, such as Figure 2 As shown, when the distal ends of the two sets of clamping components 2 are in contact, the clamping space 23 is spindle-shaped.

[0057] In this embodiment of the application, by setting the structural shape of the clamping component 2, when the two sets of clamping components 2 approach each other until they abut, the space formed by the clamping surfaces of the two sets of clamping components 2 is spindle-shaped.

[0058] For example, the portion of the clamping assembly 2 that clamps the surgical object can be an arc-shaped structure. The radius of this arc-shaped structure of each clamping assembly 2 is greater than the maximum distance along the clamping direction Y in the clamping space 23 (when the distal ends of the two clamping assemblies 2 are in contact). The clamping direction Y is perpendicular to the pulling direction Z, and the clamping direction Y is the direction in which the two clamping assemblies 2 move closer or further apart. That is, as... Figure 2 As shown, along the tensile direction Z, with the maximum cross-section ( Figure 2 When the plane containing the single-dot line divides the clamping space 23 into two parts, both parts are approximately triangular prisms (two sides of the triangular prism are curved surfaces, and one side is a plane).

[0059] In the above embodiments, since the clamping space 23 is spindle-shaped when the distal ends of the two sets of clamping components 2 are in contact, the spindle-shaped clamping space 23 can match a wider range of blood vessel outer diameters during the clamping of surgical objects, such as blood vessels, which is conducive to the clamping surface and the blood vessel forming a good fit, thereby improving the effectiveness of the surgery.

[0060] In some possible embodiments of this application, reference is made to Figure 5 and Figure 6 , Figure 5 Schematic diagram of the electrode component in the surgical instrument for renal artery sympathectomy provided in this application. Figure 1 , Figure 6 Provided for this application Figure 5 A cross-sectional view along the BB direction. (e.g.) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the clamping assembly 2 includes a clamping member 21 and an electrode member 22; the clamping member 21 includes a connecting part 211 and a clamping part 212; the connecting part 211 is movably connected to the connecting assembly 1, the side of the clamping part 212 facing the clamping space 23 is a first clamping surface 217, the electrode member 22 is disposed on the clamping part 212 at the position of the first clamping surface 217, the side of the electrode member 22 facing the clamping space 23 is an electrode clamping surface 224, the electrode clamping surface 224 and the first clamping surface 217 together form a clamping surface.

[0061] In this embodiment, the clamping assembly 2 can be configured to include a clamping member 21 and an electrode member 22. Energy is applied to the surgical subject via the electrode member 22, while the clamping member 21 carries and moves the electrode member 22. For example, the clamping member 21 can be made of insulating materials such as plastic or rubber, and the electrode member 22 can be made of radiofrequency ablation electrodes, microwave ablation electrodes, etc. When radiofrequency current or microwave energy is applied to the electrode member 22, it generates heat, which acts on the tissue of the surgical subject to achieve the therapeutic purpose. This embodiment does not limit the specific materials of the clamping member 21 and the electrode member 22.

[0062] In the embodiments of this application, such as Figure 3 and Figure 4 As shown, the clamping member 21 can be configured to include a connecting portion 211 and a clamping portion 212. For example, the connecting portion 211 and the clamping portion 212 can be configured as follows: Figure 3 and Figure 4 The single-dotted line extending along the clamping direction Y shown in the diagram is the dividing line. It should be noted that this division is only an example; other interfaces can also be used to divide the connecting part 211 and the clamping part 212. A first connecting hole 215 and a second connecting hole 216 can be provided on the connecting part 211. The clamping member 21 is rotatably connected to the outer tube 11 through the first connecting hole 215, and the clamping member 21 is rotatably connected to the connecting rod 13 through the second connecting hole 216, thereby achieving a movable connection between the clamping assembly 2 and the connecting assembly 1.

[0063] For example, such as Figure 3 and Figure 4 As shown, the clamping portion 212 of the clamping member 21 can be configured as an arc-shaped strip, that is, the entire clamping portion 212 is arc-shaped and has a strip structure. For example, the clamping portion 212 can be configured as an arc-shaped strip with a central angle range of 100° to 140° corresponding to the arc length, such as configuring the clamping portion 212 as an arc-shaped strip with a central angle of 120° corresponding to the arc length. The side of the clamping portion 212 facing the clamping space 23 is a first clamping surface 217, which is a smooth and continuous arc-shaped curved surface.

[0064] In the embodiments of this application, such as Figure 5 and Figure 6As shown, the electrode 22 can be configured as an arc-shaped strip that matches the clamping portion 212, meaning the curvature of the electrode 22 is the same as or nearly the same as the curvature of the clamping portion 212. For example, the electrode 22 can be configured as an arc-shaped strip with a central angle ranging from 80° to 100° corresponding to its arc length, such as an arc-shaped strip with a central angle of 90° corresponding to its arc length. The surface of the electrode 22 facing the clamping space 23 is the electrode clamping surface 224, which is a smooth, continuous, gradually changing arc-shaped surface.

[0065] For example, the first clamping surface 217 and the electrode clamping surface 224 can be two arc-shaped curved surfaces with the same structure. That is, the bending and extension of the electrode clamping surface 224 are the same as those of the first clamping surface 217, so that the electrode clamping surface 224 and the first clamping surface 217 can be completely fitted together. In this way, when the two electrode pieces 22 approach each other along the clamping direction Y, the distance between the distal vertices 223 on the two electrode pieces 22 is less than the distance between the proximal vertices 222 on the two electrode pieces 22. This electrode piece 22, with its gradually changing arc-shaped curved surface 224, can effectively fit blood vessels with a larger outer diameter.

[0066] For example, such as Figure 3 and Figure 4 As shown, a receiving groove 213 matching the electrode 22 can be provided on the clamping part 212 to mount the electrode 22 onto the clamping part 212. For example, the receiving groove 213 can be an arc-shaped groove recessed from the first clamping surface 217 in a direction away from the clamping space 23, and the depth of the arc-shaped groove is the same as the thickness of the electrode 22, so that the electrode 22 can be accommodated in the arc-shaped groove. At this time, the electrode clamping surface 224 and the first clamping surface 217 coincide to form a complete clamping surface. Since the electrode 22 is located in the receiving groove 213, the reliability of mounting the electrode 22 on the clamping part 21 can be improved.

[0067] Another example, such as Figure 4 and Figure 6As shown, positioning structures can be provided on the clamping portion 212 and the electrode member 22. For example, a positioning hole 214 can be provided on the clamping portion 212, extending from the bottom of the receiving groove 213 away from the clamping space 23, allowing the positioning hole 214 to penetrate the bottom of the receiving groove 213. Correspondingly, a positioning post 221 matching the positioning hole 214 can be provided on the side of the electrode member 22 away from the electrode clamping surface 224. Alternatively, a positioning post 221 can be provided at the bottom of the receiving groove 213 on the clamping portion 212, extending from the bottom of the receiving groove 213 towards the clamping space 23. Correspondingly, a positioning hole 214 matching the positioning post 221 can be provided on the side of the electrode member 22 away from the electrode clamping surface 224.

[0068] In this way, during the process of installing the electrode 22 onto the clamping part 21, the positioning pin 221 can be inserted into the positioning hole 214 to restrict the relative position of the electrode 22 and the clamping part 212, which is beneficial to improving the assembly efficiency and assembly accuracy of the electrode 22 and the clamping part 212.

[0069] In the above embodiments, since the clamping member 21 includes a connecting portion 211 and a clamping portion 212, it is convenient to movably connect the clamping member 21 to the connecting assembly 1 through the connecting portion 211, and to conveniently set the electrode member 22 through the clamping portion 212. Furthermore, the electrode clamping surface 224 and the first clamping surface 217 together form a clamping surface, which can make the clamping surface smooth and continuous arc-shaped, thus reducing protrusions on the clamping surface and minimizing the risk of scratching the surgical object during use, thereby improving the safety of the surgical instrument.

[0070] In some possible embodiments of this application, such as Figure 3 and Figure 4 As shown, the clamping assembly 2 has an injection channel 3, which extends from the connecting part 211 to the first clamping surface 217 and / or the electrode clamping surface 224. The injection channel 3 is used to deliver liquid.

[0071] In this embodiment of the application, an irrigation channel 3 may be provided on the clamping component 2. For example, the irrigation channel 3 may be a circular channel to deliver liquid to the surgical object through the irrigation channel 3. The liquid may be physiological saline or the like.

[0072] For example, the infusion channel 3 can be provided on the clamping member 21, or it can be provided on both the clamping member 21 and the electrode member 22. For instance, the infusion channel 3 can extend through the connecting portion 211 and the clamping portion 212 along the pulling direction Z, wherein the infusion inlet of the infusion channel 3 on the connecting portion 211 is located at the proximal end of the connecting portion 211, and the infusion outlet of the infusion channel 3 on the clamping portion 212 is located at the proximal end of the clamping portion 212, that is, the infusion outlet is located on the first clamping surface 217 near the connecting portion 211. Multiple infusion channels 3 can be provided on the clamping assembly 2.

[0073] In another example, the infusion channel 3 can be made to pass through the connecting part 211, the clamping part 212 and the electrode 22 in sequence along a direction that is at an angle to the pulling direction Z. In this case, the infusion outlet is located on the electrode clamping surface 224 of the electrode 22.

[0074] Another example is that a connection structure matching the injection pipe 8 can be set at the injection port, such as a threaded interface or a snap-fit ​​interface, so as to quickly and sealingly connect the injection pipe 8 and the injection channel 3 through the connection structure.

[0075] In the above embodiments, since the clamping assembly 2 has an infusion channel 3 that extends to the first clamping surface 217 and / or the electrode clamping surface 224, during surgery using the renal artery sympathetic nerve removal surgical instrument provided in this application embodiment, liquid can be delivered to the contact area between the clamping surface and the surgical object through the infusion channel 3. This allows the liquid to flush the contact surface between the electrode clamping surface 224 and the surgical object, effectively reducing the occurrence of a rapid increase in the surface temperature of the surgical object. Furthermore, the flowing liquid can promptly remove scabs caused by overheating on the surface of the surgical object, thereby improving the safety of the surgery.

[0076] Reference Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 , Figure 7 Schematic diagram of the clamp structure in the surgical instrument for renal artery sympathetic nerve removal provided in this application. Figure 2 , Figure 8 Schematic diagram of the electrode component in the surgical instrument for renal artery sympathectomy provided in this application. Figure 2 , Figure 9 Schematic diagram of the electrode component in the surgical instrument for renal artery sympathectomy provided in this application. Figure 3 , Figure 10 Provided for this application Figure 9 A cross-sectional view along the DD direction. Figure 11 Provided for this application Figure 9 A cross-sectional view along the CC direction.

[0077] In some possible embodiments of this application, such as Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the infusion channel 3 includes an infusion main path 31 and an infusion branch path 32. The infusion main path 31 extends from the connecting part 211 to the electrode 22. The infusion branch path 32 is disposed on the electrode 22 along the clamping direction Y of the clamping assembly 2, and the infusion branch path 32 passes through the electrode clamping surface 224 to connect the infusion main path 31 and the clamping space 23.

[0078] In this embodiment, the infusion channel 3 can be configured to include a connected infusion main path 31 and infusion branch path 32. For example, a portion of the infusion main path 31 can be located on the clamping member 21, that is, a portion of the infusion main path 31 can sequentially pass through the connecting portion 211 and the clamping portion 212 along the pulling direction Z, and the distal end of the infusion main path 31 can be located on the side wall of the receiving groove 213 (the wall surface near the proximal end of the receiving groove 213) on the clamping member 21. Correspondingly, as Figure 10 As shown, another part of the injection trunk 31 can be located on the electrode 22, that is, another part of the injection trunk 31 is arranged in the electrode 22 along the pulling direction Z. The injection trunk 31 on the electrode 22 can be a blind hole structure. The proximal end of the injection trunk 31 on the electrode 22 can correspond to the distal end of the injection trunk 31 on the clamping part 212. After the electrode 22 is installed in the receiving groove 213, the injection trunk 31 on the electrode 22 and the injection trunk 31 on the clamping part 21 are connected to form a complete injection trunk 31.

[0079] For example, a potting branch 32 can be provided on the electrode 22, and the potting branch 32 can extend on the electrode 22 along the clamping direction Y, that is, the potting branch 32 and the potting main line 31 can be perpendicular to each other. One end of the potting branch 32 can be located on the electrode clamping surface 224, and the other end of the potting branch 32 can be connected to the potting main line 31 in the electrode 22.

[0080] In another example, multiple infusion branches 32 can be provided on the electrode 22, with the multiple infusion branches 32 along the axial direction of the electrode 22 (e.g., ...). Figure 10The traction direction Z shown is sequentially distributed on the electrode 22, and each injection branch 32 is connected to the injection main line 31. For example, the number of injection branches 32 can be set according to the length of the electrode 22, such as three injection branches 32 on the electrode 22. The three injection branches 32 can also extend radially along the electrode 22 and penetrate the electrode clamping surface 224. Alternatively, two, four, or five injection branches 32 can be provided on the electrode 22. This embodiment does not limit the specific number of injection branches 32. Multiple injection branches 32 can be evenly distributed along the axial direction of the electrode 22, meaning the distance between the injection outlets of two adjacent injection branches 32 is equal.

[0081] Another example, such as Figure 7 As shown, a wire channel 4 can be provided on the clamping member 21 to allow wires to pass through it. For example, a wire channel 4 parallel to the injection trunk 31 can be provided on the clamping member 21, in which case the wire channel 4 and the injection trunk 31 are two independent through-hole structures. Alternatively, the wire channel 4 on the clamping member 21 and at least a portion of the injection trunk 31 on the clamping member 21 can be connected and overlapped. For example, the injection trunk 31 and the wire channel 4 on the clamping member 21 can be made into an integral structure, that is, the aperture of the injection trunk 31 or the wire channel 4 on the clamping member 21 can be increased so that the injection trunk 31 (wire channel 4) on the clamping member 21 can both deliver a sufficient amount of liquid and accommodate the wires 7 electrically connected to the electrode member 22. Therefore, a wire 7 can be provided in the injection trunk 31 that passes through the connecting part 211 and the clamping part 212 sequentially on the clamping member 21. In this case, a portion of the injection trunk 31 on the clamping member 21 can pass through the connecting part 211 and the clamping part 212 sequentially along the pulling direction Z, and this portion of the injection trunk 31 extends to the position of the electrode 22. This structural arrangement can reduce the number of holes provided on the clamping member 21, which is beneficial to reducing the production cost of the clamping assembly 2.

[0082] In another example, an infusion tube 8 channel can be provided in the connecting component 1. For example, an infusion tube 8 channel can be provided inside the inner tube 12, so that the infusion tube 8 can extend through the inner tube 12 to the proximal end of the clamp 21.

[0083] In the above embodiments, since the infusion channel 3 includes an infusion main path 31 and infusion branch paths 32, the position and number of the infusion branch paths 32 located on the electrode 22 can be configured to create an open infusion outlet on the electrode clamping surface 224. This allows liquid to be directly delivered between the electrode clamping surface 224 and the surface of the surgical subject, thereby reducing the continuous and prolonged contact time between the electrode clamping surface 224 and the surface of the surgical subject, which helps to reduce the risk of the electrode clamping surface 224 overheating. Furthermore, the liquid can directly act on the surface of the surgical subject, directly flushing away scabs caused by overheating, allowing the scabs to fall off quickly and be carried away by the liquid.

[0084] In some possible embodiments of this application, such as Figure 4 and Figure 7 As shown, the clamping member 21 has a wire channel 4, which passes through the connecting part 211 and extends to the clamping part 212. The wire channel 4 extends from the clamping part 212 to the position where the electrode member 22 is located. The wire channel 4 is used to pass through the wire 7.

[0085] In this embodiment, a wire channel 4 can be provided on the clamping member 21 to provide a wire 7, so as to electrically connect the electrode member 22 to a radio frequency transmitter or microwave generator.

[0086] For example, the wire channel 4 can extend from the proximal end of the connecting portion 211 to the proximal end of the clamping portion 212 along the pulling direction Z, and the wire channel 4 can pass through the connecting portion 211 and the clamping portion 212. For example, the distal end of the wire channel 4 can be located on the side wall of the receiving groove 213 on the proximal end of the clamping portion 212. Then, after the electrode 22 is placed in the receiving groove 213, the wire 7 can be inserted into the wire channel 4 from the proximal end of the electrode 22. The aperture of the wire channel 4 can be set according to the number and diameter of the wires 7 provided on the clamping assembly 2 as needed, and multiple wires 7 can be inserted into the same wire channel 4 located on the clamping member 21.

[0087] In another example, a wire channel 4 can be provided in the connecting component 1. For example, a wire channel 4 can be provided inside the inner tube 12, so that the wire 7 can be placed inside the inner tube 12 so that the wire 7 can extend through the inside of the inner tube 12 to the proximal end of the clamp 21.

[0088] In the above embodiment, since the clamping member 21 has a wire channel 4, and the wire channel 4 extends from the clamping part 212 to the location of the electrode 22, the wire 7 can extend to the electrode 22 through the wire channel 4, so as to facilitate the electrical connection between the electrode 22 and the wire 7. Furthermore, since the wire channel 4 is located inside the clamping member 21, the wire 7 can be hidden inside the clamping member 21, thereby maintaining a neat appearance of the clamping assembly 2 and reducing the impact of the wire 7 on the surgery.

[0089] In some possible embodiments of this application, such as Figure 5 and Figure 6 As shown, the electrode 22 has a first receiving cavity 5, which is connected to the wire channel 4. The first receiving cavity 5 is matched with the temperature detection element and is used to receive the temperature detection element.

[0090] In this embodiment, a temperature sensor can be provided in the surgical instrument for renal artery sympathetic nerve removal. For example, the temperature sensor can be a thermistor or a thermocouple. A first receiving cavity 5 matching the temperature sensor can be provided in the clamping assembly 2 to hold the temperature sensor. Multiple first receiving cavities 5 can be provided on the electrode 22.

[0091] For example, a first receiving cavity 5 can be provided on the electrode 22. The shape of the first receiving cavity 5 can be designed according to the shape of the temperature sensing element. For example, the first receiving cavity 5 can be set as a circular hole, that is, a blind hole can be provided as the first receiving cavity 5 at the proximal end of the electrode 22. This blind hole can be provided at the proximal end of the electrode 22 along the pulling direction Z. And the first receiving cavity 5 can be connected to the wire channel 4 on the clamping member 21. In this way, after the temperature sensing element is placed in the first receiving cavity 5, the wire 7 connected to the temperature sensing element can be passed through the wire channel 4 on the clamping member 21.

[0092] In the above embodiments, since the electrode 22 has a first receiving cavity 5 that matches the temperature detection element, the temperature detection element can be placed inside the first receiving cavity 5. Thus, when performing surgery using the renal artery sympathetic nerve removal surgical instrument provided in this embodiment, the temperature of the electrode 22 itself can be promptly obtained through the temperature detection element, thereby improving the accuracy of temperature control of the electrode 22 and enhancing surgical safety. Furthermore, the first receiving cavity 5 is connected to the wire channel 4, facilitating the placement of a wire 7 electrically connected to the temperature detection element within the clamping assembly 2.

[0093] In some possible embodiments of this application, such as Figure 8 , Figure 9 and Figure 10 As shown, the electrode 22 has a second accommodating cavity 6, which is connected to the wire channel 4. The second accommodating cavity 6 is matched with the pressure detection element and is used to accommodate the pressure detection element.

[0094] In this embodiment, a pressure detection element can be provided in the surgical instrument for renal artery sympathetic nerve removal. For example, the pressure detection element can be a strain gauge pressure sensor, a piezoresistive pressure sensor, a capacitive pressure sensor, a piezoelectric pressure sensor, etc. A second receiving cavity 6 matching the pressure detection element can be provided in the clamping assembly 2 to hold the pressure detection element through the second receiving cavity 6. Multiple second receiving cavities 6 can be provided on the electrode 22.

[0095] For example, a second receiving cavity 6 can be provided on the electrode 22. The shape of the second receiving cavity 6 can be designed according to the shape of the pressure detection element. For example, the second receiving cavity 6 can be set as a circular hole, a square hole, a polygonal hole, etc. That is, a blind hole as the second receiving cavity 6 can be provided at the proximal end of the electrode 22. This blind hole can be provided at the proximal end of the electrode 22 along the pulling direction Z. And the second receiving cavity 6 can be connected to the wire channel 4 on the clamping member 21. In this way, after the pressure detection element is placed in the second receiving cavity 6, the wire 7 connected to the pressure detection element can be passed through the wire channel 4 on the clamping member 21.

[0096] In the above embodiments, since the electrode 22 has a second accommodating cavity 6 that matches the pressure detection element, a temperature detection element can be installed in the second accommodating cavity 6. Thus, when performing surgery using the renal artery sympathetic nerve removal surgical instrument provided in this application embodiment, the pressure change of the electrode 22 can be detected in real time through the pressure detection element, which also allows for the determination of the magnitude of the pressure applied to the surgical subject by the electrode 22. This reduces the risk of vascular stenosis caused by excessive pressure applied by the electrode 22 to the surgical subject (such as blood vessels). Furthermore, the pressure change of the electrode 22 can be used to determine the degree of contact between the electrode clamping surface 224 and the surgical subject, which is beneficial for improving surgical safety and efficiency.

[0097] In some possible embodiments of this application, such as Figure 11 As shown, the second accommodating cavity 6 includes an embedded cavity 61 and a sensing cavity 62. One end of the embedded cavity 61 is connected to the wire channel 4. The sensing cavity 62 is disposed on the electrode 22 along the clamping direction Y of the clamping assembly 2, and the sensing cavity 62 penetrates the electrode clamping surface 224 to connect the clamping space 23 and the other end of the embedded cavity 61. The embedded cavity 61 is matched with the pressure detection element and is used to accommodate the pressure detection element. The sensing cavity 62 is used to accommodate the pressure sensing element.

[0098] In this embodiment, the second accommodating cavity 6 can be configured to include an implantation cavity 61 and a sensing cavity 62, so that a pressure sensor is housed in the implantation cavity 61 and the pressure of the surgical object is sensed and transmitted through the material disposed in the sensing cavity 62.

[0099] For example, an implantation cavity 61 can be provided at the proximal end of the electrode 22. The implantation cavity 61 can extend along the traction direction Z. The implantation cavity 61 is a blind hole that matches the pressure detection element. The pressure detection element can then be placed in the implantation cavity 61, and the wire 7 of the pressure detection element can extend from the implantation cavity 61 to the wire channel 4 on the clamping element 21. A sensing cavity 62 can be provided on the electrode 22 along the clamping direction Y, and the sensing cavity 62 can penetrate the electrode clamping surface 224. In this way, the clamping space 23 and the implantation cavity 61 can be connected through the sensing cavity 62. A soft rubber, soft plastic, or other material can be provided in the sensing cavity 62. The sensing cavity 62 is sealed by the material provided in the sensing cavity 62, and the pressure of the surgical object can be transmitted to the pressure detection element through the material provided in the sensing cavity 62.

[0100] In the above embodiments, since the second accommodating cavity 6 is configured to include an implantation cavity 61 and a sensing cavity 62, it is convenient to install a pressure detection element within the implantation cavity 61. Furthermore, the sensing cavity 62 penetrates the electrode clamping surface 224, and can be filled with a soft material that easily deforms under pressure. This allows the pressure of the surgical subject to be directly transmitted to the pressure detection element through the material filling the sensing cavity 62, improving the sensitivity of pressure detection and the accuracy of the obtained pressure readings.

[0101] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of the specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A surgical instrument for removing the renal artery sympathetic nerve, characterized in that, include: Operational components; A connection component, wherein the operating component is connected to one end of the connection component; The clamping assembly comprises two sets of clamping assemblies movably connected to the end of the connecting assembly away from the operating assembly. The clamping surface of each set of clamping assemblies matches the shape of the surgical object. After the operating assembly drives the connecting assembly to move, so that the connecting assembly drives the two sets of clamping assemblies to move closer to each other, the clamping surfaces of the two sets of clamping assemblies enclose and form a clamping space.

2. The surgical instrument for renal artery sympathetic nerve removal according to claim 1, characterized in that, The clamping surface of each set of clamping components is an arc-shaped curved surface.

3. The surgical instrument for renal artery sympathetic nerve removal according to claim 2, characterized in that, With the distal ends of the two sets of clamping components abutting each other, the clamping space is spindle-shaped.

4. The surgical instrument for renal artery sympathetic nerve removal according to claim 1, characterized in that, The clamping assembly includes a clamping member and an electrode member; the clamping member includes a connecting portion and a clamping portion; the connecting portion is movably connected to the connecting assembly; the side of the clamping portion facing the clamping space is a first clamping surface; the electrode member is disposed on the clamping portion at the position of the first clamping surface; the side of the electrode member facing the clamping space is an electrode clamping surface; the electrode clamping surface and the first clamping surface together form the clamping surface.

5. The surgical instrument for renal artery sympathetic nerve removal according to claim 4, characterized in that, The clamping assembly has an infusion channel that extends from the connection portion to the first clamping surface and / or the electrode clamping surface, and the infusion channel is used to deliver liquid.

6. The surgical instrument for renal artery sympathetic nerve removal according to claim 5, characterized in that, The infusion channel includes an infusion main path and an infusion branch path. The infusion main path extends from the connecting portion to the electrode. The infusion branch path is disposed on the electrode along the clamping direction of the clamping assembly, and the infusion branch path passes through the electrode clamping surface to connect the infusion main path and the clamping space.

7. The surgical instrument for renal artery sympathetic nerve removal according to claim 6, characterized in that, The electrode has at least two infusion branches, which are distributed along the axial direction of the electrode.

8. The surgical instrument for renal artery sympathetic nerve removal according to claim 6, characterized in that, The injection trunk line passes through the connecting part and the clamping part in sequence, and extends on the clamping part to the position of the electrode. The clamping part also has a wire channel, and at least a portion of the wire channel communicates with and overlaps with at least a portion of the injection trunk line.

9. The surgical instrument for renal artery sympathetic nerve removal according to claim 4, characterized in that, The clamping member has a wire channel that passes through the connecting part and extends to the clamping part, and extends from the clamping part to the location of the electrode. The wire channel is used to pass through a wire.

10. The surgical instrument for renal artery sympathetic nerve removal according to claim 9, characterized in that, The electrode has a second receiving cavity, which is connected to the wire channel and is matched with the pressure detection element for accommodating the pressure detection element.

11. The surgical instrument for renal artery sympathetic nerve removal according to claim 10, characterized in that, The second accommodating cavity includes an embedded cavity and a sensing cavity. One end of the embedded cavity is connected to the wire channel. The sensing cavity is disposed on the electrode along the clamping direction of the clamping assembly, and the sensing cavity penetrates the electrode clamping surface to connect the clamping space and the other end of the embedded cavity. The embedded cavity is matched with the pressure detection element and is used to accommodate the pressure detection element. The sensing cavity is used to accommodate the pressure sensing element.

12. The surgical instrument for renal artery sympathetic nerve removal according to claim 9, characterized in that, The electrode has a first receiving cavity, which is connected to the wire channel. The first receiving cavity is matched with the temperature sensing element and is used to receive the temperature sensing element.

13. The surgical instrument for renal artery sympathetic nerve removal according to any one of claims 4 to 12, characterized in that, The clamping part has a receiving groove that matches the electrode, and the electrode is disposed in the receiving groove.

14. The surgical instrument for renal artery sympathetic nerve removal according to claim 13, characterized in that, One of the clamping part and the electrode has a positioning post, and the other of the clamping part and the electrode has a positioning hole that matches the positioning post. The positioning post or the positioning hole extends from the bottom of the receiving groove and cooperates with the positioning hole to limit the position of the electrode relative to the clamping part.

15. The surgical instrument for renal artery sympathetic nerve removal according to any one of claims 1 to 12, characterized in that, The connecting assembly includes an outer tube and an inner tube, with the inner tube passing through the outer tube. The clamping assembly is rotatably connected to the outer tube. One end of the inner tube is connected to the operating assembly, and the other end of the inner tube is connected to the clamping assembly via a connecting rod. During the process of the operating assembly driving the inner tube to move relative to the outer tube, the inner tube drives the clamping assembly to rotate relative to the outer tube via the connecting rod.

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