Surgical tool and surgical apparatus including the same

Abstract

This invention relates to the field of surgical instruments, disclosing a surgical tool and surgical instruments and equipment including the same. The surgical equipment includes a surgical instrument comprising a conductive outer rod and an inner rod. The tool includes a conductive connector, a push rod, two tool parts, and two first connecting rods. The drive part of the push rod extends axially and is mounted on the tool end of the inner rod. The tool parts are mounted on one end of the first connecting rods. The two first connecting rods are arranged axially and are hinged to the connector at the intersection. The connector is mounted on the outer rod. The connecting part of the push rod drives the other end of the first connecting rods. The inner rod drives the two tool parts to open and close via the push rod and the two first connecting rods. One tool part, one first connecting rod, the push rod, and the inner rod are sequentially electrically connected, and another tool part, another first connecting rod, the connector, and the outer rod are sequentially electrically connected, forming the two poles of the surgical instrument, which can be used for bipolar energy devices.

Description

Technical Field

[0001] This invention relates to the field of surgical instruments, and more particularly to a surgical tool. Background Technology

[0002] In surgical equipment, surgical instruments are mounted on handles. The inner rod of the surgical instrument moves along the axis relative to the outer rod to drive the tool at the tool end of the inner rod to open and close, thereby gripping or cutting biological tissue.

[0003] The following problems exist with existing surgical equipment:

[0004] The internal rod of the instrument is difficult to operate and can easily lead to operator fatigue;

[0005] When surgical instruments are bipolar energy instruments, some circuits are connected by wires and the wires need to be fixed, which complicates the manufacturing process.

[0006] When surgical instruments are conductive, most of the conductive structure at the end of the instrument is exposed, which can easily lead to accidental burning of biological tissue and results in poor safety. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of poor performance of surgical equipment in the prior art, and to provide a surgical tool and surgical instruments and equipment including the same.

[0008] The present invention solves the above-mentioned technical problems through the following technical solution:

[0009] A surgical instrument comprising a conductive material:

[0010] Connector;

[0011] A push rod having a drive portion extending along the axial direction of the push rod and a connecting portion extending non-parallel to the axial direction;

[0012] The tooling department consists of two sections: the first tooling department and the second tooling department.

[0013] Two first connecting rods are respectively rod one corresponding to the first tool part and rod two corresponding to the second tool part. The tool part is installed at one end of the corresponding first connecting rod. The two first connecting rods are arranged crosswise and are hinged to the connector at the intersection. The other ends of the two first connecting rods are poweredly connected to both ends of the connector.

[0014] The push rod moves axially relative to the connector to drive the other end of the two first links to rotate around the intersection of the two first links, so that the two tool parts are brought close to each other and combined into a closed state, and the two tool parts are moved away from each other and combined into an open state.

[0015] The first tool part, the first rod, and the push rod are electrically connected in sequence;

[0016] The second tool part, the second rod, and the connector are electrically connected in sequence;

[0017] The first rod, the push rod, the second rod, and the connector are insulated from each other.

[0018] In this design, a force is applied to the drive unit of the push rod, causing it to move axially relative to the connector, pushing the other ends of the two first connecting rods. This causes the two first connecting rods to rotate around their intersection, thereby moving the two tool parts closer together or further apart to achieve opening and closing. Rod 1 and the push rod are made of conductive material for electrical connection with the first tool part, and rod 2 and the connector are made of conductive material for electrical connection with the second tool part. This facilitates contact and electrical connection with the inner and outer rods of the instrument via the push rod and connector, eliminating the need for wire connections and resulting in a simple structure and convenient manufacturing.

[0019] Preferably, the two first connecting rods are hinged to the connector via a hinge shaft made of conductive material. The first rod and the connector are insulated from each other by an insulating sleeve fitted on one end of the hinge shaft, and the second rod and the connector are electrically connected by a hinge at the other end of the hinge shaft.

[0020] In this design, the connector is insulated from rod one and electrically connected to rod two via a hinge shaft and an insulating sleeve, thus simplifying the tool structure.

[0021] Preferably, at least one end of the hinge shaft is non-circular and embedded in the connector.

[0022] This design prevents the hinge shaft from rotating relative to the connector, thus improving the reliability of component transmission in the tool.

[0023] Preferably, the corresponding tool part and the first connecting rod are electrically connected via contact.

[0024] This design simplifies the structure and makes processing easier.

[0025] Preferably, the surgical tool further includes two second connecting rods, namely rod three corresponding to rod one and rod four corresponding to rod two. The other end of the first connecting rod is hinged to one end of the corresponding second connecting rod. The two ends of the connecting part are respectively hinged to the other ends of the two second connecting rods. Rod three is made of conductive material. Rod one and the push rod are electrically connected through rod three. Rod three is insulated from rod two and the connecting head.

[0026] In this design, a second connecting rod is provided. On the one hand, this facilitates changing the transmission ratio of the push rod driving the first connecting rod to rotate; on the other hand, it reduces the relative position requirements between the push rod and the first connecting rod. These two factors allow for flexible arrangement of the shape and position of the components in the tool.

[0027] Preferably, the third rod is electrically connected to the first rod and the push rod through hinged contact.

[0028] In this solution, by making the hinged contact electrically conductive, the two hinged components can always maintain contact with the hinge shaft, thus ensuring a reliable electrical connection.

[0029] Preferably, the two first links and the two second links are arranged intersecting about the axial direction.

[0030] In this design, by setting the drive unit of the push rod to extend axially and arranging two first connecting rods intersecting about the axial direction, the operation is less strenuous when applying force to the drive unit to drive the two tool parts to open and close. By setting two intersecting second connecting rods, the lever arm length can be increased, thereby improving transmission efficiency.

[0031] Preferably, the connecting portion extends perpendicular to the axial direction, and the driving portion is located at the middle of the extending direction of the connecting portion.

[0032] In this design, the transmission structure between the push rod and the first connecting rod is configured to ensure balanced force distribution.

[0033] Preferably, the connector has a mounting cavity that opens axially toward the tool portion, and at least a portion of the first connecting rod and the second connecting rod extend into the mounting cavity.

[0034] In this solution, firstly, it can prevent the parts of the first and second connecting rods located in the mounting cavity from contacting biological tissue. When the connector is made of conductive material, an insulating layer can be wrapped around the outside of the connector to prevent the connector and the structure inside the mounting cavity from directly conducting electricity with the biological tissue, thus avoiding accidental burning. Secondly, when assembling the tool, after connecting the first connecting rod, the second connecting rod, and the push rod, they are placed into the mounting cavity of the connector, and then the hinge operation of the first connecting rod and the connector is performed. The mounting cavity can prevent the first connecting rod, the second connecting rod, and the push rod from falling off, making assembly simple and convenient.

[0035] Preferably, the mounting cavity is a U-shaped groove.

[0036] In this design, the mounting cavity is a U-shaped groove. Firstly, it has a simple structure and is easy to process. Secondly, when installing tools, it is convenient to adjust the positions of the first connecting rod, the second connecting rod, and the push rod from the side opening of the U-shaped groove, thus improving the ease of installation. Thirdly, the two sides of the U-shaped groove have openings, which can accommodate first connecting rods, second connecting rods, and push rods of various sizes, thus providing good versatility.

[0037] Preferably, the outer surface of the connector is covered with an insulating layer.

[0038] This design avoids accidental burns caused by the connector accidentally touching biological tissue, thus improving safety and reliability.

[0039] Preferably, the two tool parts are configured such that when the two tool parts are parallel to each other, they do not contact each other; when the two tool parts are close together and in a closed shape, the two tool parts have a negative included angle, so that the ends of the two tool parts away from the first connecting rod along the axial direction are in contact with each other, and the ends close to the first connecting rod have a gap between them.

[0040] In this design, the two tool sections can clamp and separate the thin film tissue without affecting the clamping of biological tissue of a certain thickness.

[0041] A surgical instrument includes an outer rod and an inner rod made of conductive material. The inner rod is movably inserted within the outer rod along its own axis. The surgical instrument also includes a surgical tool as described in any of the above-described technical solutions. A connector is mounted on the outer rod and electrically connected to it. A push rod is mounted on the tool end of the inner rod and electrically connected to it via a drive unit. The electrical connection circuit between the first rod and the inner rod is insulated from the electrical connection circuit between the second rod and the outer rod. The inner rod moves relative to the outer rod along its own axis to drive the push rod to move axially relative to the connector.

[0042] In this design, the surgical instruments are configured to function as bipolar energy devices.

[0043] Preferably, the inner rod of the instrument and the push rod, and the outer rod of the instrument and the connector are respectively connected by contact electricity.

[0044] This design makes the structure simple and easy to manufacture.

[0045] Preferably, the axis of the inner rod of the instrument coincides with the axis of the push rod.

[0046] In this design, the axis of the inner rod of the instrument coincides with the axis of the push rod, which makes the operation less strenuous when the two tool parts are driven to open and close by the push rod of the inner rod.

[0047] Preferably, the surgical instrument further includes two anti-rotation components made of conductive material. The two anti-rotation components are insulatedly mounted on the outer rod of the instrument and protrude from the outer surface of the outer rod, and are respectively located on both sides of the inner rod of the instrument in the radial direction. The inner rod of the instrument and the anti-rotation components are in slidable contact along the axial direction of the inner rod of the instrument.

[0048] In this design, an anti-rotation component is included. On the one hand, it prevents the inner rod of the instrument from rotating relative to the outer rod during movement, ensuring smooth and reliable operation. On the other hand, the anti-rotation component passes through the wall of the outer rod and contacts the inner rod, serving as a conductive pin. By combining these two functions with the anti-rotation component, the structure becomes simple and compact.

[0049] A surgical device includes a handle, and preferably, the surgical device further includes a surgical instrument as described in any of the above-described technical solutions, wherein the surgical instrument is mounted on the handle at one end opposite to the tool end along the inner rod of the instrument.

[0050] The positive and progressive effects of this invention are as follows:

[0051] Rod 1 and push rod are made of conductive material to be electrically connected to the first tool part. Rod 2 and connector are made of conductive material to be electrically connected to the second tool part. This facilitates contact and electrical connection with the inner rod and outer rod of the instrument through the push rod and connector, thus eliminating the need for wire connections, making the structure simple and easy to process. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the surgical instruments used in Example 1;

[0053] Figure 2 This is an exploded view of the surgical instruments in Example 1;

[0054] Figure 3 This is a partial schematic diagram of the surgical instruments in Example 1;

[0055] Figure 4 This is a partial schematic diagram of the surgical instruments in Example 1;

[0056] Figure 5 This is a partial structural diagram of the tool in Example 1;

[0057] Figure 6 This is a partial structural diagram of the tool in Example 1;

[0058] Figure 7 This is a schematic diagram showing the opening formed by the two tool parts in Example 1;

[0059] Figure 8 This is a schematic diagram of the two tool parts when they are closed in Example 1;

[0060] Figure 9 This is a schematic diagram of the connector in Example 1;

[0061] Figure 10 This is a partial schematic diagram of the surgical instruments used in Example 2;

[0062] Figure 11 This is a schematic diagram showing the assembly of the inner rod, anti-rotation component, and support component of the device in Example 2;

[0063] Figure 12 This is a partial structural diagram of the tool in other embodiments.

[0064] Explanation of reference numerals in the attached figures:

[0065] 1000 surgical instruments;

[0066] Instrument outer rod assembly 1;

[0067] External rod of the instrument 11;

[0068] Base 12, anti-rotation component 13, support component 14;

[0069] Connector 15;

[0070] Instrument inner rod assembly 2;

[0071] Inner rod 21 of the instrument;

[0072] Connector 22, mounting cavity 221;

[0073] Tool section 23, pliers plate one 231, pliers plate two 232, teeth one 233, teeth two 234;

[0074] First link 24, link one 241, link two 242;

[0075] Second link 25, link three 251, link four 252;

[0076] Push rod 26, connecting part 261, driving part 262;

[0077] Hinge shaft 27;

[0078] Insulating sleeve 28. Detailed Implementation

[0079] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0080] Example 1

[0081] This embodiment provides a surgical instrument, or simply the instrument. Figures 1-9 This is a schematic diagram provided for this embodiment.

[0082] like Figures 1-3 Surgical instruments 1000 include:

[0083] Instrument outer rod assembly 1, which includes instrument outer rod 11;

[0084] Instrument inner rod assembly 2, which includes instrument inner rod 21. Figure 5 The approximate position of the axis L of the inner rod 21 of the instrument is indicated by a dashed line. The extension direction of the axis L is referred to as the axial direction or the L direction. The inner rod 21 of the instrument passes through the outer rod 11 of the instrument along the L direction and can move relative to the outer rod 11 of the instrument along the L direction.

[0085] Surgical instruments, or simply instruments.

[0086] The inner rod 21 of the surgical instrument has one end along the L direction as the tool end of the surgical instrument 1000, where the surgical tool is installed; the other end along the L direction is the handle end of the surgical instrument 1000, used to install the handle; the structure of the tool end of the surgical instrument 1000 is shown below. Figures 3-9 The structure of the handle end can be referred to in Embodiment 2; in the figure, the L1 direction represents the axial direction from the handle end to the tool end, and the L2 direction represents the axial direction from the tool end to the handle end.

[0087] like Figures 4-6 Surgical tools include:

[0088] Connector 22;

[0089] The push rod 26 has a connecting part 261 and a driving part 262. The driving part 262 is installed on the tool end of the inner rod 21 of the instrument. The driving part 262 extends along the axial direction of the push rod, and the connecting part 261 does not extend parallel to the axial direction of the push rod.

[0090] The two tool parts 23 are respectively clamp plate one 231 and clamp plate two 232. Clamp plate one is the first tool part, and clamp plate two is the second tool part;

[0091] The two first connecting rods 24, namely rod one 241 and rod two 242, correspond to clamp one 231 and clamp two 232 respectively. It can be understood that the connecting rods are used to play a power connection role and do not necessarily need to be rod-shaped.

[0092] Tool part 23 is installed at one end of the corresponding first link 24. The two first links 24 are arranged crosswise and are hinged to the connector 22 at the intersection. The other ends of the two first links 24 are respectively connected to the two ends of the connecting part 261 and are driven by the connecting part 261.

[0093] The inner rod 21 of the instrument moves relative to the outer rod 11 in the L direction, driving the push rod 26 to move in the L direction. Since the connector 22 is mounted on the outer rod 11 and cannot move in the L direction, the push rod 26 drives the other end of the first connecting rod 24 to rotate around the hinge point between the two first connecting rods 24 and the connector 22, causing the two tool parts 23 to move closer together in a closed state, and to move further apart in an open state; when the two tool parts 23 are closed, as... Figures 3-6 When opening the mouth, as Figure 7 It is understandable that when the two tool parts 2323 are combined in a closed shape, they can be fitted together or have a preset gap, such as a few tenths of a millimeter or less.

[0094] The first clamp 231, rod 241, push rod 26, and inner rod 21 are all made of conductive material and are sequentially electrically connected to form a first conductive circuit. The second clamp 232, rod 242, connector 22, and outer rod 11 are all made of conductive material and are sequentially electrically connected to form a second conductive circuit. Rod 241, push rod 26, and inner rod 21 in the first conductive circuit are insulated from rod 242, connector 22, and outer rod 11 in the second conductive circuit, allowing the surgical instrument 1000 to function as a bipolar energy device. The components in these two conductive circuits can be electrically connected via contact, eliminating the need for wire connections and simplifying the structure and manufacturing process.

[0095] like Figure 4 The tool also includes an insulating sleeve 28 and a hinge shaft 27 made of conductive material. The hinge shaft 27 is used to hinge the first clamp plate 231 and the second clamp plate 232 to the connector 22. The hinge shaft 27 passes through the connector 22. One end of the hinge shaft 27, the insulating sleeve 28, and the first rod 241 are sequentially fitted. The connector 22 and the first rod 241 are insulatedly hinged through the insulating sleeve 28 and the hinge shaft 27. The second rod 242 and the connector 22 are connected to the connector 22 through the other end of the hinge shaft 27, making them electrically conductive. The first rod 241 and the second rod 242 are hinged to the connector 22 through the same hinge shaft 27, with one being insulated and the other electrically conductive, which simplifies the tool's structure.

[0096] In a preferred embodiment, such as Figure 3 One end of the hinge shaft 27 is non-circular, specifically with two radially protruding protrusions on the hinge shaft 27. This end of the hinge shaft 27 is embedded in the connector 22, which can prevent the hinge shaft 27 from rotating relative to the connector 22 and improve the reliability of the transmission of parts in the tool.

[0097] In a preferred embodiment, such as Figure 5 , Figure 6The surgical instrument also includes two second connecting rods 25, namely rod three 251 and rod four 252. Rod three 251 corresponds to rod one 241, and rod four 252 corresponds to rod two 242. The other end of the first connecting rod 24 is hinged to one end of the second connecting rod 25. The two ends of the connecting part 261 are respectively hinged to the other ends of the two second connecting rods 25. Rod three 251 is made of conductive material. Rod one 241 and push rod 26 are electrically connected through rod three 251. Rod three 251 is insulated from rod two 242, connector 22, and instrument outer rod 11 in the second conductive circuit. By setting the second connecting rods 25, on the one hand, it is convenient to change the transmission ratio of push rod 26 driving the first connecting rod 24 to rotate; on the other hand, it can reduce the relative position requirements of push rod 26 and first connecting rod 24. These two factors allow for flexible arrangement of the shape and position of the parts in the instrument.

[0098] In other embodiments, the second link 25 may not be provided; for example, a groove may be provided on the push rod 26, and the end of the first link 24 facing the L2 direction may slide in the groove. When the push rod 26 moves along the L direction, the end of the first link 24 slides in the groove to realize the rotation of the first link 24 around the hinge point, so that the two tool parts 23 close or open.

[0099] In a preferred embodiment, such as Figure 3 The instrument outer rod assembly 1 also includes a connector 15 made of conductive material, which is mounted on the tool end of the instrument outer rod 11. A connector 22 is mounted on the connector 15 for indirect mounting on the instrument outer rod 11. In other embodiments, the connector 22 may be omitted, and the instrument outer rod 11 may be directly connected to the connector 15.

[0100] In this embodiment, rod 241, rod 251, push rod 26, and inner rod 21 in the first conductive circuit are insulated from rod 242, connector 22, connector 15, and outer rod 11 in the second conductive circuit, enabling the surgical instrument to function as a bipolar energy device. How to achieve mutual insulation between other parts of the two conductive circuits can be found in existing technologies, and will not be detailed here.

[0101] Specifically, clamp piece 1 231, lever 1 241, and lever 3 251 correspond to each other, and clamp piece 2 232, lever 2 242, and lever 4 252 correspond to each other. Figure 5In the instrument, clamp 1 231 and lever 1 241 are integrally formed. The right end of lever 1 241 is hinged to the left end of lever 3 251, and the right end of lever 3 251 is hinged to the lower left end of push rod 26. Clamp 2 232 and lever 2 242 are integrally formed. The right end of lever 2 242 is hinged to the left end of lever 4 252, and the right end of lever 4 252 is hinged to the upper left end of push rod 26. Push rod 26 is fixedly connected to the inner lever 21. The inner lever 21 moves relative to the outer lever 11 in the L1 direction, pushing push rod 26 in the L1 direction, causing clamp 1 231 and clamp 2 232 to move away from each other and open up. Figure 7 The inner rod 21 of the instrument moves relative to the outer rod 11 in the L2 direction, and the push rod 26 moves in the L2 direction, causing clamp plate one 231 and clamp plate two 232 to move closer together to form a closed shape, as shown. Figure 5 , Figure 6 .

[0102] Clamping piece 231 and lever 241 can directly contact the conductor. Lever 241, lever 251, and push rod 26 can sequentially connect to the conductor through hinged joints. Push rod 26 and inner lever 21 of the instrument can also directly contact the conductor. Clamping piece 232 and lever 242 can directly contact the conductor. Lever 242 and connector 22 can connect to the conductor through hinged joints. Connector 22, connector 17, and outer lever 11 of the instrument can sequentially directly contact the conductor. Specifically, the hinged contact conduction involves two hinged components contacting a conductive hinged shaft. These two components in the conductive circuit form an electrical connection through contact, eliminating the need for wires and simplifying the tool's manufacturing and assembly operations, thus reducing costs. When conducting through hinged contact, the two hinged components can always maintain contact with the hinged shaft to ensure a reliable electrical connection.

[0103] In a preferred embodiment, such as Figure 5 , Figure 6 In some embodiments, the two second links 25 are arranged in a cross configuration. In other embodiments, the two second links 25 may not be arranged in a cross configuration, such as... Figure 12 By intersecting the two second links 25, the lever arm length can be increased, thereby improving transmission efficiency and making the operation of opening and closing the two tool parts 23 via the inner rod 21 of the instrument more labor-saving.

[0104] In a preferred embodiment, such as this embodiment, the axis of the push rod 26 coincides with the axis L of the inner rod 21 of the instrument, and the coincidence is allowed to be within a preset error range; the two first connecting rods 24 are arranged intersecting about the axis L, and the two connecting rods 25 are arranged intersecting about the axis L. By setting the axis of the inner rod 21 of the instrument, the extension direction of the drive part 262, the intersecting axis of the two first connecting rods 24, and the intersecting axis of the two second connecting rods 25 to coincide, all being the axis L, the transmission efficiency is high when the inner rod 21 moves relative to the outer rod 11 of the instrument along its own axis to drive the two tool parts 23 to open and close through the push rod 26 and the first connecting rods 24, thus making the operation labor-saving and convenient.

[0105] In a preferred embodiment, the outer surface of the connector 22 is covered with an insulating layer to prevent the connector 22 from accidentally contacting biological tissue and causing accidental burns, thereby improving safety and reliability.

[0106] In a hinged embodiment, such as Figure 3 , Figure 9 The connector 22 has a mounting cavity 221, the opening of which faces the L1 direction. A portion of the first connecting rod 24, a portion of the second connecting rod 25, and a portion of the push rod 26 are located within the mounting cavity 221. Firstly, this prevents the portions of the first connecting rod 24 and the second connecting rod 25 within the mounting cavity 221 from contacting biological tissue. When the connector 22 is made of conductive material, an insulating layer can be wrapped around the outside of the connector 22 to prevent direct electrical conduction between the connector 22 and the structure within the mounting cavity 221 and the biological tissue, thus avoiding accidental burning. Secondly, when installing the tool, after connecting the first connecting rod 24, the second connecting rod 25, and the push rod 26, they are placed into the mounting cavity 221 of the connector 22, and then the hinge shaft is installed. The mounting cavity 221 prevents the first connecting rod 24, the second connecting rod 25, and the push rod 26 from falling off, making assembly simple and convenient.

[0107] In a preferred embodiment, such as this embodiment, the mounting cavity 221 is a U-shaped groove. Firstly, it has a simple structure and is easy to process. Secondly, when installing tools, it is convenient to adjust the positions of the first connecting rod 24, the second connecting rod 25, and the push rod 26 from the side opening of the U-shaped groove, thereby improving the ease of installation. Thirdly, the two sides of the U-shaped groove have openings, which can accommodate the first connecting rod 24, the second connecting rod 25, and the push rod 26 of various sizes, thus providing good versatility.

[0108] In a preferred embodiment, such as Figure 5 The connecting part 261 extends perpendicularly to the axis L, and the driving part 262 is located in the middle of the extending direction of the connecting part 261, so that the transmission structure between the push rod 26 and the first connecting rod 24 is subjected to balanced force.

[0109] When the two tool parts 23 are combined in an open position, the angle between them is a positive angle, such as... Figure 7 In a preferred embodiment, such as Figure 8 The two tool parts 23 are configured such that they do not contact each other when they are parallel to each other; when the two tool parts 23 are close together in a closed shape, there is an included angle between them, specifically a negative included angle in the figure, so that the teeth 233 and 234 at the L1-facing ends of the two tool parts 23 mesh tightly with each other, and there is a gap d1 between the teeth at the L1-facing ends. This design allows the surgical instrument at the L1-facing end to grasp and separate thin membrane tissue without affecting the grasping and electrocoagulation of biological tissue of a certain thickness.

[0110] Example 2

[0111] This embodiment provides a surgical instrument, and mainly describes the structure of the handle end of the surgical instrument. Figures 10-11 This is a schematic diagram of this embodiment. Other structures of this embodiment can be referred to in Embodiment 1 and other embodiments.

[0112] like Figures 10-11 The outer rod 11 of the instrument has a base 12 at one end facing the L2 direction, and the base 12 can be considered as part of the outer rod 11. The anti-rotation member 13 is made of conductive material, passes through the base 12 and protrudes from the outer surface of the base 12, and is insulated from the outer rod 11. The two anti-rotation members 13 are located at both ends of the inner rod 21 in the radial direction, and the inner rod 21 and the anti-rotation member 13 are in sliding contact along the L direction. The anti-rotation member 13 can serve as a conductive pin of the inner rod 21, and can also be used to limit the rotation of the inner rod 21 relative to the outer rod 11 around the axis, so as to improve the reliability of the surgical instrument 1000 during use; the anti-rotation member 13 is also used to improve the coaxiality of the outer rod 11 and the inner rod 21.

[0113] Specifically, the inner rod 21 of the instrument has a locking plane on each of its radially opposite two sides. Two anti-rotation members 13 are inserted radially into the base 12 and abut against a locking plane. The two anti-rotation members 13 are symmetrically arranged about the axis of the outer rod 11, which improves the coaxiality of the outer rod 11 and the inner rod 21 and maintains good concentricity. The support member 14, which can be, but is not limited to, screws or pins, is inserted into the base 12 in the L direction to insert into the hole of the anti-rotation member 13 and support the anti-rotation member 13. The anti-rotation member 13 has a radially extending groove. The support member 14 is inserted into the groove, and the anti-rotation member 13 can slide radially relative to the support member 14, thereby facilitating the insertion of the inner rod 21. After the inner rod 21 is inserted into the outer rod 11, the anti-rotation member 13 can be prevented from moving away from the inner rod 21 by the handle.

[0114] The surgical instrument 1000, which can be derived from any of the above embodiments or a combination of the embodiments, can be applied to surgical equipment. By attaching the handle end of the surgical instrument 1000 to the handle, the surgical instrument 1000 can be made easier and more convenient to use during surgical operations.

[0115] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A surgical tool, characterized in that, It is made of conductive materials: Connector; A push rod having a drive portion extending along the axial direction of the push rod and a connecting portion extending non-parallel to the axial direction; The tooling department consists of two sections: the first tooling department and the second tooling department. Two first connecting rods are respectively rod one corresponding to the first tool part and rod two corresponding to the second tool part. The tool part is installed at one end of the corresponding first connecting rod. The two first connecting rods are arranged crosswise and are hinged to the connector at the intersection. The other ends of the two first connecting rods are respectively poweredly connected to both ends of the connector. The push rod moves axially relative to the connector to drive the other end of the two first links to rotate around the intersection of the two first links, so that the two tool parts are brought close to each other and combined into a closed state, and the two tool parts are moved away from each other and combined into an open state. The first tool part, the first rod, and the push rod are electrically connected in sequence; The second tool part, the second rod, and the connector are electrically connected in sequence; The first rod, the push rod, the second rod, and the connector are insulated from each other.

2. The surgical tool as described in claim 1, characterized in that, The two first connecting rods are hinged to the connector via a hinge shaft made of conductive material. The first rod and the connector are insulated from each other by an insulating sleeve fitted on one end of the hinge shaft. The second rod and the connector are electrically connected by a hinge at the other end of the hinge shaft. Preferably, at least one end of the hinge shaft is non-circular and embedded in the connector. And / or, the corresponding tool part and the first connecting rod are electrically connected via contact.

3. The surgical tool as described in claim 1 or 2, characterized in that, The surgical tool also includes two second connecting rods, namely rod three corresponding to rod one and rod four corresponding to rod two. The other end of the first connecting rod is hinged to one end of the corresponding second connecting rod. The two ends of the connecting part are respectively hinged to the other ends of the two second connecting rods. Rod three is made of conductive material. Rod one and the push rod are electrically connected through rod three. Rod three is insulated from rod two and the connecting head.

4. The surgical tool as described in claim 3, characterized in that, The third rod is electrically connected to the first rod and the push rod through hinged contact.

5. The surgical tool as described in claim 3, characterized in that, The two first links and the two second links are arranged intersecting about the axial direction; And / or, the connecting portion extends perpendicular to the axial direction, and the driving portion is located at the middle of the extending direction of the connecting portion.

6. The surgical tool as described in claim 3, characterized in that, The connector has a mounting cavity that opens axially toward the tool portion, and at least a portion of the first connecting rod and the second connecting rod extend into the mounting cavity; Preferably, the mounting cavity is a U-shaped groove, and / or the outer surface of the connector is covered with an insulating layer.

7. The surgical tool as described in claim 1, characterized in that, The two tool parts are configured such that when the two tool parts are parallel to each other, they do not contact each other; when the two tool parts are close together and in a closed state, the two tool parts have a negative included angle, so that the ends of the two tool parts away from the first connecting rod along the axial direction are in contact with each other, and the ends close to the first connecting rod are in gap.

8. A surgical instrument comprising an outer rod and an inner rod made of a conductive material, the inner rod being movably disposed within the outer rod along its own axis, characterized in that, The surgical instrument further includes a surgical tool as described in any one of claims 1-7, wherein the connector is mounted on the outer rod of the instrument and electrically connected to the outer rod, the push rod is mounted on the tool end of the inner rod of the instrument via the drive unit and electrically connected to the inner rod, the electrical connection circuit between the first rod and the inner rod is insulated from the electrical connection circuit between the second rod and the outer rod, and the inner rod moves relative to the outer rod along its own axis to drive the push rod to move axially relative to the connector.

9. The surgical instrument as described in claim 8, characterized in that, The inner rod and the push rod of the instrument, and the outer rod and the connector of the instrument are respectively connected by contact electricity; And / or, the axis of the inner rod of the instrument coincides with the axis of the push rod; And / or, the surgical instrument further includes two anti-rotation elements made of conductive material, the two anti-rotation elements being insulatedly mounted on the outer rod of the instrument and protruding from the outer surface of the outer rod, and respectively located on both sides of the inner rod of the instrument in a radial direction, the inner rod of the instrument being in slidable contact with the anti-rotation elements along the axial direction of the inner rod of the instrument.

10. A surgical device comprising a handle, characterized in that, The surgical device further includes the surgical instrument as described in claim 8 or 9, wherein the surgical instrument is mounted on the handle at one end of the inner rod away from the tool end.

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