Puncture instrument

Abstract

The invention discloses a puncture instrument, belongs to the field of orthopedics, and aims to simplify the positioning puncture problem of the puncture instrument. The puncture instrument comprises a puncture tube body, and a plurality of positioning sawteeth are arranged on the periphery of the edge of the working end, used for puncture, of the puncture tube body. By the adoption of the instrument, during puncture, the positioning sawteeth at the tail end of the puncture tube body make contact with the bone or the human tissue, the positioning sawteeth can go deep into the bone or the human tissue, the puncture tube body is positioned through the positioning sawteeth, and then corresponding puncture operation is conducted through the puncture needle. The scheme can be used for hollow screw implantation, pedicle screw implantation, disease taking examination, centrum forming and the like, puncture operation based on the orthopedics department is feasible, and the existing puncture principle is thoroughly changed. By means of the method, auxiliary positioning can be achieved, deflection, displacement and other conditions can be reduced, the puncture efficiency is improved, and the method has important practical value for improving the operation efficiency, shortening the operation time and reducing postoperative infection.

Description

Technical Field

[0001] The present application relates to the field of orthopedics, and specifically to a puncture instrument. Background Art

[0002] With the increase of age, the incidence of osteoporotic vertebral compression fractures increases, and vertebral compression fractures caused by osteoporosis have become a problem that cannot be ignored. The full name of PKP surgery is percutaneous vertebral kyphoplasty, which is a minimally invasive orthopedic surgery mainly used to treat vertebral osteoporotic fractures. The process of using PKP to treat vertebral osteoporotic fractures is as follows: first, locate the vertebral body with compression fracture through intraoperative fluoroscopy, then perform local anesthesia, insert vertebroplasty instruments, reach the cone from the bilateral pedicles of the vertebral body, insert balloons, shape the vertebral body with compression fracture, and then inject bone cement into the vertebral body to restore the shape of the fractured cone. PKP surgery has a very good therapeutic effect on lumbar spine diseases, with less trauma and a short postoperative recovery period. It can significantly improve the patient's quality of life and is favored by doctors and patients.

[0003] In PKP surgery, to achieve the effect of "reaching the cone from the bilateral pedicles of the vertebral body", a corresponding channel needs to be established, and a corresponding puncture instrument is needed. Traditional puncture instruments use a structure similar to an awl, and their operating ends use a sharp tip structure to achieve the corresponding puncture operation; when puncturing the detailed vertebral body, the sharp tip is prone to slippage with the vertebral surface, making puncture difficult and increasing the possibility of surrounding tissue loss.

[0004] How to simplify the positioning and puncturing of a puncture instrument has become a technical problem that urgently needs to be solved. To this end, the present application provides a puncture instrument. Summary of the invention

[0005] The invention purpose of this application is to provide a puncture instrument that can achieve auxiliary positioning, reduce the occurrence of deflection, displacement, etc., improve puncture efficiency, and ensure surgical effect, in view of the problem that the sharp tip structure of the existing awl-like traditional puncture instrument is prone to slippage with the vertebral surface, which affects the puncture efficiency. This application is reasonable in conception, easy to use, can greatly improve puncture efficiency, has extremely high application value, and has important practical value for improving surgical efficiency, shortening surgical time, and reducing postoperative infection.

[0006] In order to achieve the above purpose, this application adopts the following technical solutions: A puncture instrument comprises a puncture tube body, wherein a plurality of positioning saw teeth are arranged on the circumference of the edge of a working end of the puncture tube body for puncture.

[0007] The invention comprises a puncture tube body and an orthopedic nail, wherein the puncture tube body is a fourth outer tube body, the fourth outer tube body is tubular, the inner diameter of the fourth outer tube body matches the outer diameter of the orthopedic nail, and the orthopedic nail can freely move along the axial direction of the puncture tube body; along the axial direction of the fourth outer tube body, a plurality of positioning saw teeth are arranged on the circumference of the end edge of the fourth outer tube body facing the patient's bone; Or it includes a puncture tube body, the puncture tube body is a fifth pathological detection sampling tube, the fifth pathological detection sampling tube is tubular; along the axial direction of the fifth pathological detection sampling tube, a plurality of positioning saw teeth are arranged on the circumference of the edge of the working end of the fifth pathological detection sampling tube for sampling; Or it includes a puncture tube body, which is an outer tube of a puncture needle. The outer tube of the puncture needle includes a second outer tube body, which is tubular; along the axial direction of the second outer tube body, a plurality of positioning serrations are arranged on the circumference of the end edge of the second outer tube body facing the patient.

[0008] The orthopedic nail is one or more of a hollow nail and a pedicle screw.

[0009] It comprises a puncture tube body and an orthopedic nail, wherein the puncture tube body is a fourth outer tube body, and the orthopedic nail is a pedicle screw; The fourth outer tube body is tubular, the inner diameter of the fourth outer tube body matches the outer diameter of the orthopedic nail, and the orthopedic nail can move freely along the axial direction of the puncture tube body; along the axial direction of the fourth outer tube body, a plurality of positioning saw teeth are arranged on the circumference of the end edge of the fourth outer tube body facing the patient's bone; A fourth insulating layer is provided on the outer surface of the fourth outer tube body; It also includes a wire connected to the pedicle screw and a power source. One pole of the power source, the wire and the pedicle screw are connected in sequence so that the pedicle screw constitutes an electrode of the ablation electrode.

[0010] The fourth insulating layer is an insulating film, and the insulating film is attached to the outer wall of the fourth outer tube body.

[0011] The application of the aforementioned puncture instrument in robot-assisted surgical equipment.

[0012] The positioning serrations on the puncture tube body are used to contact with the patient's bones or human tissues to achieve positioning.

[0013] This medical device is used to solve the mechanical drift problem existing in robot-assisted surgical equipment.

[0014] A forming assembly comprises a puncture needle outer tube, wherein the puncture needle outer tube comprises a second tube body handle and a second outer tube body, wherein the second outer tube body is tubular; One end of the second outer tube body is connected to the second tube body handle, and the other end of the second outer tube body is recorded as the second positioning end; The second outer tube body is fixedly connected to the second tube body handle, and the second tube body handle is provided with a second guide cavity connected to the inner cavity of the second outer tube body, and the second guide cavity is connected to the second outer tube body and constitutes a second positioning cavity; Along the axial direction of the tube body of the second outer tube, a plurality of second positioning serrations are arranged on the circumferential direction of the tube body edge of the second positioning end.

[0015] The second outer tube body is made of 0Cr18Ni9 stainless steel.

[0016] A puncture assembly comprises a puncture needle body and a puncture needle outer tube, wherein the puncture needle outer tube comprises a second tube handle and a second outer tube body, and the second outer tube body is tubular; One end of the second outer tube body is connected to the second tube body handle, and the other end of the second outer tube body is recorded as the second positioning end; The second outer tube body is fixedly connected to the second tube body handle, and the second tube body handle is provided with a second guide cavity connected to the inner cavity of the second outer tube body, the second guide cavity is connected to the second outer tube body and constitutes a second positioning cavity matched with the puncture needle body, the puncture needle body can pass through the second positioning cavity and the second guide cavity can guide the puncture needle body; Along the axial direction of the tube body of the second outer tube, a plurality of second positioning serrations are arranged on the circumferential direction of the tube body edge of the second positioning end.

[0017] A plurality of scale marks are arranged on the outer surface of the second outer tube body.

[0018] The second tube handle is in the shape of an inverted triangle, and the surface of the second tube handle facing the first needle handle is recorded as the first side surface of the tube handle, and the two surfaces of the second tube handle close to the second positioning serration are recorded as the second side surface of the tube handle and the third side surface of the tube handle. The second side surface of the tube handle and the third side surface of the tube handle are respectively located on both sides of the second guide cavity, and the second side surface of the tube handle and the third side surface of the tube handle are respectively arc-shaped and can respectively cooperate with the index finger and middle finger of the user.

[0019] The second side surface of the tube body handle can provide a fulcrum for the index finger of the user, the third side surface of the tube body handle can provide a fulcrum for the middle finger of the user, or the third side surface of the tube body handle can provide a fulcrum for the middle finger and ring finger of the user.

[0020] The puncture needle body includes a first puncture needle and a first needle handle. The head end of the first puncture needle is fixedly connected to the first needle handle and the first needle handle can drive the first puncture needle to move synchronously. The end of the first puncture needle is a sharp puncture structure. The diameter of the first puncture needle is smaller than the inner diameter of the second outer tube body and the puncture needle body can be inserted and withdrawn from the second positioning cavity.

[0021] The first puncture needle is made of 0Cr18Ni9 stainless steel.

[0022] The first needle body handle and the second tube body handle are respectively made of insulating materials.

[0023] The first needle body handle and the second tube body handle are respectively made of plastic.

[0024] The first needle body handle and the second tube body handle are respectively provided with a plurality of process holes.

[0025] The first needle handle is rectangular, and the surface of the first needle handle facing the second tube handle and matching the first side surface of the tube handle is recorded as the second side surface of the needle handle, and the surface of the first needle handle away from the second tube handle and opposite to the second side surface of the needle handle is recorded as the first side surface of the needle handle, and the first side surface of the needle handle can provide support for the palm of the user.

[0026] A first groove of the tube body handle is arranged on the side wall of the second tube body handle, and a first protrusion of the needle body handle matching with the first groove of the tube body handle is arranged on the side wall of the first needle body handle, and the first groove of the tube body handle and the first protrusion of the needle body handle can make the first needle body handle and the second tube body handle remain relatively still along the circumference of the second tube body handle through the matching of the first groove of the tube body handle and the first protrusion of the needle body handle; Or a first protrusion of the tube body handle is provided on the side wall of the second tube body handle, and a first groove of the needle body handle matching with the first protrusion of the tube body handle is provided on the side wall of the first needle body handle; and through the cooperation between the first protrusion of the tube body handle and the first groove of the needle body handle, the first needle body handle and the second tube body handle can remain relatively stationary along the circumferential direction of the second tube body handle.

[0027] There are two first grooves of the tube body handle, and the two first grooves of the tube body handle are located on two opposite side walls of the second tube body handle; Or the number of the first grooves of the needle body handle is two and the two first grooves of the needle body handle are located on two opposite side walls of the first needle body handle.

[0028] The second side surface of the needle body handle is provided with a needle body second side groove one; The first side surface of the tube body handle is respectively provided with a tube body one side giving groove one and a tube body one side spring piece one that matches with the second side groove one of the needle body, one end of the tube body one side spring piece one is connected to the second tube body handle as a whole, the tube body one side spring piece one is located in the tube body one side giving groove one and the other end of the tube body one side spring piece one can be deformed relative to the second tube body handle; A protrusion on one side of the tube body is arranged on the side wall of the spring piece on one side of the tube body facing the second side of the needle body handle; in the process of the first needle body handle rotating relative to the second tube body handle until the first side of the tube body handle and the second side of the needle body handle are fitted together, the protrusion on one side of the tube body first contacts the side wall of the groove on the two sides of the needle body and causes the spring piece on one side of the tube body to deform; when the protrusion on one side of the tube body enters the groove on the two sides of the needle body, based on the height difference between the side wall of the groove on the two sides of the needle body and the bottom surface of the groove on the two sides of the needle body, the spring piece on one side of the tube body quickly moves to its initial position and produces a sound, and then the protrusion on one side of the tube body is stuck in the groove on the two sides of the needle body; Or a groove on one side of the tube body is provided on the first side of the tube body handle; The second side surface of the needle body handle is respectively provided with a needle body two-sided yield groove one, and a needle body two-sided spring piece one that matches with a groove one on one side of the tube body, one end of the needle body two-sided spring piece one is connected to the first needle body handle as a whole, the needle body two-sided spring piece one is located in the needle body two-sided yield groove one, and the other end of the needle body two-sided spring piece one can be deformed relative to the first needle body handle; The needle body has a two-sided spring piece on the side wall facing the first side of the tube body handle. A needle body two-sided protrusion is provided on the side wall of the needle body two-sided spring piece. In the process of the first needle body handle rotating relative to the second tube body handle until the first side of the tube body handle and the second side of the needle body handle are fitted together, the needle body two-sided protrusion first contacts the side wall of the tube body one side groove and deforms the needle body two-sided spring piece. When the needle body two-sided protrusion enters the tube body one side groove, based on the height difference between the side wall of the tube body one side groove and the bottom surface of the tube body one side groove, the needle body two-sided spring piece moves quickly to its initial position and produces a sound, and then the needle body two-sided protrusion is stuck in the tube body one side groove.

[0029] In the process of the first needle body handle rotating relative to the second tube body handle until the first side surface of the tube body handle and the second side surface of the needle body handle are attached together, the protrusion on one side of the tube body first contacts the side wall of the groove on the second side of the needle body and compresses the spring piece on one side of the tube body; when the protrusion on one side of the tube body enters the groove on the second side of the needle body, based on the height difference between the side wall of the groove on the second side of the needle body and the bottom surface of the groove on the second side of the needle body, the spring piece on one side of the tube body quickly moves to the initial position of the spring piece on one side of the tube body and the spring piece on one side of the tube body produces a sound; or the spring piece on one side of the tube body quickly moves to the initial position of the spring piece on one side of the tube body and the protrusion on one side of the tube body collides with the bottom surface of the groove on the second side of the needle body and produces a sound; Or in the process of the first needle body handle rotating relative to the second tube body handle until the first side surface of the tube body handle and the second side surface of the needle body handle are fitted together, the protrusion on the second side of the needle body first contacts the side wall of the groove on one side of the tube body and compresses the spring piece on the second side of the needle body; when the protrusion on the second side of the needle body enters the groove on one side of the tube body, based on the height difference between the side wall of the groove on one side of the tube body and the bottom surface of the groove on one side of the tube body, the spring piece on the second side of the needle body moves rapidly to the initial position of the spring piece on the second side of the needle body and the spring piece on the second side of the needle body produces a sound; or the spring piece on the second side of the needle body moves rapidly to the initial position of the spring piece on the second side of the needle body and the protrusion on the second side of the needle body collides with the bottom surface of the groove on one side of the tube body and produces a sound.

[0030] The second tube handle is provided with a first threaded connection section of the tube handle, and the first needle handle is provided with a first threaded groove of the needle handle that matches the first threaded connection section of the tube handle, and the cooperation between the first threaded connection section of the tube handle and the first threaded groove of the needle handle can keep the puncture needle body and the puncture needle outer tube relatively still; Or the second tube body handle is provided with a first threaded groove of the tube body handle, and the first needle body handle is provided with a first threaded connecting section of the needle body handle that cooperates with the first threaded groove of the tube body handle, and the cooperation between the first threaded groove of the tube body handle and the first threaded connecting section of the needle body handle can keep the puncture needle body and the puncture needle outer tube relatively stationary.

[0031] A second insulating layer is disposed on the outer surface of the second outer tube body.

[0032] The second insulating layer is an insulating film, and the insulating film is attached to the outer wall of the second outer tube body.

[0033] The insulating film is made of insulating rubber or insulating plastic.

[0034] It also includes a wire connected to the first puncture needle and a power source. One pole of the power source, the wire, and the first puncture needle are connected in sequence so that the first puncture needle constitutes an electrode of the ablation electrode.

[0035] In the prior art, puncture operations are mainly completed based on puncture needles, and the corresponding sleeves only play an auxiliary role. In the practice of medical work, the inventor found that the prior art has considerable defects. To this end, based on his own work practice, the inventor proposed a new puncture instrument, which is based on the existing puncture tube body. The puncture tube body is provided with a number of positioning serrations on the circumference of the edge of the working end used for puncture, which fundamentally changes the existing puncture principle. In the prior art, the puncture operation is mainly completed based on the puncture needle; in the present application, the original function and role of the puncture needle are not changed, but the corresponding positioning serrations are provided at the end of the puncture tube body; when using the instrument of the present application, the positioning serrations at the end of the puncture tube body contact the bone or human tissue during puncture, and the positioning serrations will penetrate into the bone or human tissue. The positioning of the puncture tube body is achieved through the positioning serrations, and then the corresponding puncture operation is performed through the puncture needle.

[0036] The solution of the present application can be used for hollow screw implantation, pedicle screw implantation, pathological examination, vertebral body shaping, etc., and all orthopedic puncture operations are feasible, which completely changes the existing puncture principles.

[0037] Furthermore, the present application also includes a solution combined with ablation. Taking pedicle screw implantation as an example, the solution of the present application can be used for robot-assisted surgery to solve the problem of mechanical drift, and can be extended to percutaneous ordinary pedicle screw implantation of the spine. At the same time, the dorsal branch of the spinal nerve can be ablated when the puncture is positioned to reach the bone surface to solve the problem of low back pain caused by this. Taking the vertebral puncture component as an example, it can achieve rapid positioning and puncture, greatly improve the puncture efficiency, reduce the possibility of mispuncture and puncture time, thereby reducing the patient's surgical risk. At the same time, the solution of the present application can also be used in operations such as puncture and pathological examination to achieve precise positioning and reduce secondary damage to patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 It is the front view of the outer tube of the puncture needle.

[0039] Figure 2 for Figure 1 Left view of .

[0040] Figure 3 It is the front view of the puncture needle body.

[0041] Figure 4 for Figure 3 Left view of .

[0042] Figure 5 This is the front view of the puncture component.

[0043] Figure 6 for Figure 5Rear view of.

[0044] Markings in the figure: 11. first puncture needle, 12. first needle body handle, 13. first threaded groove of needle body handle, 14. first protrusion of needle body handle, 15. one groove on both sides of needle body, 21. second outer tube body, 22. second tube body handle, 23. second positioning serration, 24. first threaded connection section of tube body handle, 25. first groove of tube body handle, 26. one give way groove on one side of tube body, 27. one spring piece on one side of tube body, 28. one protrusion on one side of tube body, 31. process hole. DETAILED DESCRIPTION

[0045] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0046] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0047] Example 1 The present embodiment provides a puncture instrument, which includes a puncture tube body and an orthopedic nail, wherein the puncture tube body is a fourth outer tube body, and the orthopedic nail is a pedicle screw. The fourth outer tube body is tubular, the inner diameter of the fourth outer tube body matches the outer diameter of the pedicle screw, and the pedicle screw can move freely along the axial direction of the puncture tube body. Along the axial direction of the fourth outer tube body, a plurality of positioning serrations are arranged on the circumference of the end edge of the fourth outer tube body facing the patient's bone, and the positioning serrations are mainly used to insert into the patient's bone or human tissue, thereby realizing the relative fixation of the fourth outer tube body and the patient's bone or human tissue, and the fourth outer tube body itself has a corresponding guiding function, thereby facilitating the implantation of the pedicle screw.

[0048] It should be noted that in the prior art, the pedicle screw is a main body placed in the body, and the insertion function is mainly realized based on the sharp needle at the end. The puncture tube itself plays a limited role in the puncture process. In contrast, the present application realizes positioning through the positioning serrations at the end of the puncture tube, and then provides a guide channel for the puncture of the pedicle screw, which completely changes the operation process of the operation, and is of great significance for reducing surgical risks and postoperative infections.

[0049] Furthermore, a fourth insulating layer is provided on the outer surface of the fourth outer tube body; the fourth insulating layer is an insulating film, and the insulating film is attached to the outer wall of the fourth outer tube body. At the same time, it also includes a wire connected to the pedicle screw and a power supply, one pole of the power supply, the wire, and the pedicle screw are connected in sequence so that the pedicle screw constitutes an electrode of the ablation electrode.

[0050] This structure has the following two effects: First, in robot-assisted surgery, the positioning serrations at the end of the fourth outer tube body can solve the problem of mechanical drift, which can assist the implantation of pedicle screws; Second, when the structure of the present application is adopted, the puncture positioning reaches the bone surface, and the pedicle screw is used as an electrode of the ablation electrode through the wire and power supply to ablate the dorsal branch of the spinal nerve to solve the low back pain caused by it.

[0051] Example 2 The present embodiment provides a puncture instrument, which includes a puncture tube body and an orthopedic nail, wherein the puncture tube body is a fourth outer tube body, and the orthopedic nail is a hollow nail. The fourth outer tube body is tubular, the inner diameter of the fourth outer tube body matches the outer diameter of the orthopedic nail, and the orthopedic nail can move freely along the axial direction of the puncture tube body. Along the axial direction of the fourth outer tube body, a plurality of positioning saw teeth are arranged on the circumference of the end edge of the fourth outer tube body facing the patient's bone.

[0052] Here, the operation process is as follows: (1) A plurality of positioning saw teeth are arranged on the circumference of the end edge of the fourth outer tube body facing the patient's bone, and the positioning saw teeth are mainly used to be inserted into the patient's bone, so as to achieve relative fixation between the fourth outer tube body and the patient's bone; (2) inserting the hollow nail into the body of the fourth outer tube, using the body of the fourth outer tube as a guide for the hollow nail, and fixing the hollow nail to the patient's bone; (3) As needed, the hollow nail can be used as a guide and aiming device for other components, and guide pins and other components can be placed in the hollow nail.

[0053] With this structure, positioning can be achieved through the fourth outer tube body, thereby avoiding the problem of drift of the hollow nail.

[0054] Example 3 This embodiment provides a puncture instrument, including a puncture tube body, which is a fifth disease detection sampling tube, and is tubular. Along the axial direction of the fifth disease detection sampling tube, a plurality of positioning saw teeth are arranged on the circumference of the working end edge of the fifth disease detection sampling tube for sampling.

[0055] With this structure, when taking biopsy samples, the fifth pathological examination sampling tube is inserted into the sampling position, the positioning sawtooth is used to insert into the patient's human tissue, and then the corresponding sampling is performed. With this structure, effective sampling of the patient's human tissue can be achieved, and the patient's body damage caused by drift can be avoided, and the risk of infection and postoperative complications can be reduced.

[0056] Example 4 During vertebral surgery, when puncture is required, the existing surgical instruments are prone to deflection and displacement, resulting in changes in the puncture position. How to accurately position the surgical instruments and the vertebral body to avoid deflection and displacement is the key to ensuring successful puncture.

[0057] To this end, one of the purposes of this embodiment is to provide a puncture needle outer tube, which is a component of the forming assembly. The puncture needle outer tube includes a second tube body handle and a second outer tube body, and the second outer tube body is tubular. Preferably, the second outer tube body is in the shape of a circular tube. One end of the second outer tube body is connected to the second tube body handle, and the other end of the second outer tube body is recorded as the second positioning end. The second outer tube body is fixedly connected to the second tube body handle, and the second tube body handle is provided with a second guide cavity connected to the internal cavity of the second outer tube body, and the second guide cavity is connected to the second outer tube body and constitutes a second positioning cavity. Along the axial direction of the second outer tube body, a plurality of second positioning serrations are provided on the circumferential edge of the tube body of the second positioning end.

[0058] With this structure, the second tube handle can provide support for the user. The second positioning serrations arranged on the circumference of the tube edge of the second positioning end can achieve positioning of the vertebral surface. Specifically, the second positioning serrations of the second positioning end can penetrate into the vertebral surface, thereby effectively avoiding the occurrence of slippage.

[0059] Furthermore, the second purpose of this embodiment is to provide a puncture assembly, which includes a puncture needle body and a puncture needle outer tube. The puncture needle outer tube is as described above, the second positioning cavity cooperates with the puncture needle body, and the second guide cavity can guide the puncture needle body. Preferably, a plurality of scale marks are provided on the outer surface of the second outer tube body.

[0060] In this embodiment, the puncture needle body includes a first puncture needle and a first needle body handle. The head end of the first puncture needle is fixedly connected to the first needle body handle, and the first needle body handle can drive the first puncture needle to move synchronously. The end of the first puncture needle is a sharp puncture structure. The diameter of the first puncture needle is smaller than the inner diameter of the second outer tube body, and the puncture needle body can be inserted and withdrawn from the second positioning cavity. Furthermore, the first puncture needle and the second outer tube body are respectively made of 0Cr18Ni9 stainless steel. The first needle body handle and the second tube body handle are respectively made of insulating materials. Preferably, the first needle body handle and the second tube body handle are respectively made of plastic.

[0061] The second tube handle is provided with a first threaded connection section of the tube handle, and the first needle handle is provided with a first threaded groove of the needle handle that matches the first threaded connection section of the tube handle. The cooperation between the first threaded connection section of the tube handle and the first threaded groove of the needle handle can keep the puncture needle body and the outer tube of the puncture needle relatively still. The side wall of the second tube handle is provided with a first groove of the tube handle, and the side wall of the first needle handle is provided with a first protrusion of the needle handle that matches the first groove of the tube handle. In a specific example, there are two first grooves of the tube handle and two first protrusions of the needle handle, and the two first grooves of the tube handle are located on two opposite side walls of the second tube handle.

[0062] A needle body second side groove one is provided on the second side of the needle body handle; preferably, there are two needle body second side grooves one, and the two needle body second side grooves one are symmetrically arranged with the first puncture needle as the center. A tube body one side yield groove one, a tube body one side spring piece one that matches the needle body second side groove one are provided on the first side of the tube body handle, one end of the tube body one side spring piece one is connected to the second tube body handle as a whole, the tube body one side spring piece one is located in the tube body one side yield groove one, and the other end of the tube body one side spring piece one can be deformed relative to the second tube body handle. At the same time, a tube body one side protrusion one is provided on the side wall of the tube body one side spring piece one facing the second side of the needle body handle. During the process of the first needle body handle rotating relative to the second tube body handle until the first side surface of the tube body handle and the second side surface of the needle body handle are fitted together, the protrusion on one side of the tube body first contacts the side wall of the groove on the second side of the needle body, and compresses the spring piece on one side of the tube body; when the protrusion on one side of the tube body enters the groove on the second side of the needle body, based on the height difference between the side wall of the groove on the second side of the needle body and the bottom surface of the groove on the second side of the needle body, the spring piece on one side of the tube body moves quickly to its initial position, and the protrusion on one side of the tube body collides with the bottom surface of the groove on the second side of the needle body, and a sound is generated; finally, the protrusion on one side of the tube body is stuck in the groove on the second side of the needle body.

[0063] By adopting this structure, the first puncture needle can be inserted into the tube body of the second outer tube, and the puncture needle body can be threadedly connected to the puncture needle outer tube through the cooperation of the first threaded connection section of the tube body handle and the first threaded groove of the needle body handle; during the rotation of the first needle body handle relative to the second tube body handle, the protrusion on one side of the tube body is deformed and collided with. When the protrusion on one side of the tube body is stuck in the groove on the two sides of the needle body, the sound generated by the protrusion on one side of the tube body can serve as a prompt; the first groove of the tube body handle cooperates with the first protrusion of the needle body handle, so that the first needle body handle and the second tube body handle can remain relatively still along the circumferential direction of the second tube body handle, which can play a radial limiting role; based on the above-mentioned effects, the effective connection between the puncture needle outer tube and the puncture needle body is achieved.

[0064] Several process holes are respectively provided on the first needle body handle and the second tube body handle. The second tube body handle is in the shape of an inverted triangle. The surface of the second tube body handle facing the first needle body handle is recorded as the first side surface of the tube body handle, and the two surfaces of the second tube body handle close to the second positioning sawtooth are recorded as the second side surface of the tube body handle and the third side surface of the tube body handle. The second side surface of the tube body handle and the third side surface of the tube body handle are respectively located on both sides of the second guide cavity. The second side surface of the tube body handle and the third side surface of the tube body handle are respectively in the shape of arcs, and the second side surface of the tube body handle and the third side surface of the tube body handle can respectively cooperate with the index finger and the middle finger of the user. Furthermore, the second side surface of the tube body handle can provide a fulcrum for the index finger of the user, and the third side surface of the tube body handle can provide a fulcrum for the middle finger and the ring finger of the user. The first needle handle is rectangular in shape, and the surface of the first needle handle facing the second tube handle and matching the first side surface of the tube handle is recorded as the second side surface of the needle handle, and the surface of the first needle handle away from the second tube handle and opposite to the second side surface of the needle handle is recorded as the first side surface of the needle handle, and the first side surface of the needle handle can provide support for the palm of the user.

[0065] With this structure, when performing a vertebral puncture operation, the second positioning end of the puncture needle outer tube is placed on the surface of the vertebra to be punctured, and the relative fixation of the puncture needle outer tube and the vertebra is achieved based on the second positioning serrations; then, the first puncture needle is inserted into the second outer tube body, and the puncture needle body is rotated relative to the puncture needle outer tube; based on the cooperation between the first threaded connection section of the tube body handle and the first threaded groove of the needle body handle, the protrusion one on one side of the tube body and the groove one on the two sides of the needle body, and the first groove of the tube body handle and the first protrusion of the needle body handle, the effective connection between the puncture needle outer tube and the puncture needle body is achieved; finally, the corresponding puncture is achieved by applying a force through the first needle body handle and the second tube body handle. After the puncture operation is completed, the first puncture needle rotates in the opposite direction relative to the second outer tube body, thereby separating the first puncture needle from the second outer tube body, and then taking the puncture needle body out of the puncture needle outer tube; finally, the second outer tube body can be removed from the vertebral body.

[0066] An insulating layer is provided on the outer surface of the second outer tube body; further, the insulating layer is an insulating film, and the insulating film is attached to the outer wall of the second outer tube body; preferably, the insulating film is made of insulating plastic. Further, it also includes a wire connected to the first puncture needle and a power source, one pole of the power source, the wire, and the first puncture needle are connected in sequence, and the first puncture needle constitutes an electrode of the ablation electrode.

[0067] With this structure, when performing a vertebral puncture operation, the first puncture needle constitutes an electrode of the ablation electrode, which contacts the patient's muscle tissue to achieve the corresponding ablation operation; after the ablation is completed, the corresponding ablated part can also be removed by the first puncture needle. In this structure, the puncture assembly can achieve the corresponding puncture operation; secondly, an insulating layer is provided on the outer surface of the second outer tube body, so that the first puncture needle can achieve fixed-point ablation; finally, the corresponding ablated part can be removed by the first puncture needle; the outer tube of the puncture needle can play an effective positioning role in the corresponding operation, ensure the accuracy of the operation, effectively reduce the occurrence of misoperation, and reduce the occurrence of postoperative complications in patients, which has extremely important practical value.

[0068] In this embodiment, the puncture assembly can be used in percutaneous kyphoplasty / percutaneous vertebroplasty to establish a working channel and ablatively remove muscle tissue to achieve minimally invasive operations. The use of the puncture assembly of the present application for puncture and ablative operations is a minimally invasive surgical operation with little damage to human tissue and less bleeding; the operation is precise and reliable, and can greatly shorten the surgical operation time, reduce surgical risks and postoperative complications. In the preparation of the actual product, the metal part is made of 0Cr18Ni9 stainless steel in accordance with the provisions of the GB1220 standard, and the handle material is made of PC medical-grade polymer material in accordance with the ISO 10350.1 standard; all components are sterilized with ethylene oxide and are disposable.

[0069] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification.

[0070] At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined.

[0071] Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, as an example and not a limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly introduced and described in this specification.

Claims

1. A puncture instrument, characterized in that: The puncture tube comprises a puncture tube body, and a plurality of positioning saw teeth are arranged on the circumference of the edge of the working end used for puncture.

2. The puncture instrument according to claim 1, characterized in that: The invention comprises a puncture tube body and an orthopedic nail, wherein the puncture tube body is a fourth outer tube body, the fourth outer tube body is tubular, the inner diameter of the fourth outer tube body matches the outer diameter of the orthopedic nail, and the orthopedic nail can freely move along the axial direction of the puncture tube body; along the axial direction of the fourth outer tube body, a plurality of positioning saw teeth are arranged on the circumference of the end edge of the fourth outer tube body facing the patient's bone; Or it includes a puncture tube body, the puncture tube body is a fifth pathological detection sampling tube, the fifth pathological detection sampling tube is tubular; along the axial direction of the fifth pathological detection sampling tube, a plurality of positioning saw teeth are arranged on the circumference of the edge of the working end of the fifth pathological detection sampling tube for sampling; Or it includes a puncture tube body, which is an outer tube of a puncture needle. The outer tube of the puncture needle includes a second outer tube body, which is tubular; along the axial direction of the second outer tube body, a plurality of positioning serrations are arranged on the circumference of the end edge of the second outer tube body facing the patient.

3. The puncture instrument according to claim 1 or 2, characterized in that: The orthopedic nail is one or more of a hollow nail and a pedicle screw.

4. The puncture instrument according to claim 3, characterized in that: It comprises a puncture tube body and an orthopedic nail, wherein the puncture tube body is a fourth outer tube body, and the orthopedic nail is a pedicle screw; the fourth outer tube body is tubular, the inner diameter of the fourth outer tube body matches the outer diameter of the orthopedic nail, and the orthopedic nail can move freely along the axial direction of the puncture tube body; along the axial direction of the fourth outer tube body, a plurality of positioning saw teeth are arranged on the circumference of the end edge of the fourth outer tube body facing the patient's bone; A fourth insulating layer is provided on the outer surface of the fourth outer tube body; It also includes a wire connected to the pedicle screw and a power source. One pole of the power source, the wire and the pedicle screw are connected in sequence so that the pedicle screw constitutes an electrode of the ablation electrode.

5. The puncture instrument according to claim 4, characterized in that: The fourth insulating layer is an insulating film, and the insulating film is attached to the outer wall of the fourth outer tube body.

6. Use of the puncture instrument according to any one of claims 1 to 5 in robot-assisted surgical equipment.

7. The use according to claim 6, characterized in that: The positioning serrations on the puncture tube body are used to contact with the patient's bones or human tissues to achieve positioning.

8. The use according to claim 6 or 7, characterized in that: This medical device is used to solve the mechanical drift problem existing in robot-assisted surgical equipment.

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