Puncture needle

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a puncture needle. The puncture needle comprises a needle core assembly and an outer tube assembly. The needle core assembly comprises a needle core body and a first handle, one end of the needle core body is detachably connected with the first handle, the outer tube assembly comprises a hollow outer tube body and a second handle, and one end of the outer tube body is detachably connected with the second handle. During use, the needle core assembly and the outer tube assembly are assembled, that is, the needle core assembly is inserted into the outer tube assembly, so that at least part of the needle core body is arranged in the outer tube body in a penetrating mode. The needle core body and the outer tube body of the puncture needle can be independently detached, after the puncture needle is used, only the needle tube body and the outer tube body need to be discarded, the first handle and the second handle can be repeatedly used, the use cost of the puncture needle is reduced, waste of resources is reduced, meanwhile, generation of medical waste is reduced, and the puncture needle is lower in carbon and more environmentally friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a puncture needle. Background Art

[0002] Vertebroplasty is the full name of percutaneous vertebroplasty (PVP), which is a minimally invasive surgery. It is a technology that strengthens the vertebral body by injecting bone cement (polymethylacrylate, PMMA) or artificial bone into the diseased vertebral body. The main patients of vertebroplasty are those with vertebral compression fractures caused by osteoporosis. Vertebroplasty is currently the gold standard for the treatment of osteoporotic vertebral compression fractures.

[0003] In the prior art, the puncture needle used in vertebroplasty is composed of a needle core assembly and an outer tube assembly, wherein the needle core assembly includes a needle core body and a needle core handle disposed at one end thereof, and the outer tube assembly includes an outer tube body and an outer tube handle disposed at one end thereof. The needle core body and the outer tube body are both disposable items and need to be discarded after the operation is completed. However, in principle, the needle core handle and the outer tube handle are reusable components. However, since the needle core assembly and the outer tube assembly are both integrated parts, they can only be discarded as a whole, resulting in high production costs for the puncture needle, and causing waste of resources. A large amount of medical waste will also have a negative impact on the environment.

[0004] Therefore, it is necessary to provide a puncture needle to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a puncture needle with a split design. The needle body part can be removed and discarded separately after use, and the handle part can be reused, which reduces the use cost of the puncture needle, reduces the waste of resources, and also reduces the generation of medical waste, making it more low-carbon and environmentally friendly.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A puncture needle, comprising:

[0008] A needle core assembly, the needle core assembly comprising a needle core body and a first handle, one end of the needle core body being detachably connected to the first handle;

[0009] An outer tube assembly, the outer tube assembly comprising a hollow outer tube body and a second handle, one end of the outer tube body being detachably connected to the second handle;

[0010] The needle core assembly is inserted into the outer tube assembly so that the needle core body is at least partially inserted into the outer tube body.

[0011] Preferably, a needle tip is provided at the other end of the needle core body, and after the needle core assembly is inserted into the outer tube assembly, the needle tip extends out of the outer tube body.

[0012] Preferably, a first threaded joint is provided at one end of the needle core body, the first threaded joint is threadedly connected to the insert, and the first handle is provided with a placement groove and a first accommodating hole that are interconnected, the insert is clamped in the placement groove, and the needle core body is partially located in the first accommodating hole.

[0013] Preferably, the needle core assembly comprises:

[0014] A fixing member is provided through the first handle and the insert so as to fix the two together.

[0015] Preferably, a second threaded joint is provided at one end of the outer tube body, a second accommodating hole and a second threaded groove which are interconnected are provided on the second handle, and the second threaded joint is located in the second threaded groove.

[0016] Preferably, the outer tube assembly comprises:

[0017] A locking piece is threadedly connected to the second handle and at least partially covers the opening of the second thread groove. The outer tube body passes through the locking piece, and the second threaded joint abuts against the locking piece.

[0018] Preferably, the second handle is provided with a groove, and the two opposite side walls of the groove are provided with card slots, and both ends of the first handle are provided with card blocks protruding outward; the first handle is accommodated in the groove, and one card block is correspondingly carded in one of the card slots.

[0019] Preferably, two opposite side walls of the groove are each provided with a card slot, and the notches of the two card slots are diagonally arranged on the two side walls of the groove; a card block is provided at each end of the first handle, and the card blocks are diagonally arranged at both ends of the first handle.

[0020] Preferably, two limit pins are protruding from the bottom end of the groove and are diagonally arranged, and the first handle is provided with two limit slots and the slots of the two are diagonally arranged, and one limit pin is correspondingly accommodated in one limit slot and abuts against the slot wall of the limit slot.

[0021] Preferably, the top surface of the first handle, the top surface of the second handle and the top surface of the insert together form an arc surface.

[0022] Beneficial effects:

[0023] The puncture needle includes a needle core assembly and an outer tube assembly. The needle core assembly includes a needle core body and a first handle, one end of the needle core body is detachably connected to the first handle, and the outer tube assembly includes a hollow outer tube body and a second handle, one end of the outer tube body is detachably connected to the second handle. When in use, the needle core assembly and the outer tube assembly are assembled, that is, the needle core assembly is inserted into the outer tube assembly, so that the needle core body is at least partially inserted into the outer tube body.

[0024] When performing vertebroplasty, use this puncture needle to puncture the target vertebra. After the puncture is successful, pull out the needle core assembly, that is, pull out the needle core body from the outer tube body. At this time, the outer tube body remains in the human body, and the next surgical operation can be performed. The needle core body and the outer tube body of this puncture needle can be removed separately. After the operation is completed, only the needle tube body and the outer tube body need to be discarded. The first handle and the second handle can be reused, which reduces the cost of using the puncture needle and reduces the waste of resources. At the same time, it also reduces the generation of medical waste, which is more low-carbon and environmentally friendly. And when the hospital purchases the puncture needle, it can only purchase the needle core body and the outer tube body, which can also reduce the transportation cost to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of the puncture needle provided by the utility model;

[0026] Figure 2 It is a cross-sectional view of the needle core assembly provided by the utility model;

[0027] Figure 3 is a cross-sectional view of the first handle provided by the utility model;

[0028] Figure 4 It is a bottom view of the first handle provided by the utility model;

[0029] Figure 5 is a cross-sectional view of the outer tube assembly provided by the utility model;

[0030] Figure 6 is a cross-sectional view of the second handle provided by the utility model;

[0031] Figure 7 It is a structural schematic diagram of the second handle provided by the utility model;

[0032] Figure 8 It is a cross-sectional view of the cooperation between the first handle and the second handle provided by the utility model.

[0033] In the figure:

[0034] 1. Needle core assembly; 11. Needle core body; 111. Needle tip; 12. First handle; 121. Placement groove; 122. First accommodating hole; 123. Block; 124. Limiting groove; 125. Second limiting protrusion; 13. First threaded joint; 14. Insert; 15. Fixing piece;

[0035] 2. Outer tube assembly; 21. Outer tube body; 22. Second handle; 221. Second accommodating hole; 222. Second threaded groove; 223. Groove; 224. Slot; 225. Limit pin; 23. Second threaded joint 24. Locking member. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0041] In the prior art, the puncture needle used in vertebroplasty is composed of a needle core assembly and an outer tube assembly, wherein the needle core assembly includes a needle core body and a needle core handle disposed at one end thereof, and the outer tube assembly includes an outer tube body and an outer tube handle disposed at one end thereof. Both the needle core body and the outer tube body are disposable items and need to be discarded after the operation is completed. However, in principle, the needle core handle and the outer tube handle are reusable components. However, since the needle core assembly and the outer tube assembly are both integrated parts, they can only be discarded as a whole, resulting in high cost of use of the puncture needle, and causing waste of resources. A large amount of medical waste will also have a negative impact on the environment.

[0042] To solve the above problems, see Figure 1 The present embodiment provides a puncture needle, comprising a needle core assembly 1 and an outer tube assembly 2. The needle core assembly 1 comprises a needle core body 11 and a first handle 12, one end of the needle core body 11 is detachably connected to the first handle 12, and the outer tube assembly 2 comprises a hollow outer tube body 21 and a second handle 22, one end of the outer tube body 21 is detachably connected to the second handle 22. When in use, the needle core assembly 1 and the outer tube assembly 2 are assembled, that is, the needle core assembly 1 is inserted into the outer tube assembly 2, so that the needle core body 11 is at least partially inserted into the outer tube body 21.

[0043] When performing vertebroplasty, use this puncture needle to puncture the target vertebra. After the puncture is successful, pull out the needle core assembly 1, that is, pull out the needle core body 11 from the outer tube body 21. At this time, the outer tube body 21 remains in the human body, and the next surgical operation can be performed. The needle core body 11 and the outer tube body 21 of this puncture needle can be removed separately. After the operation is completed, only the needle core body 11 and the outer tube body 21 need to be discarded. The first handle 12 and the second handle 22 can be reused, which reduces the cost of using the puncture needle, reduces the waste of resources, and also reduces the generation of medical waste, which is more low-carbon and environmentally friendly. And when the hospital purchases the puncture needle, it can only purchase the needle core body 11 and the outer tube body 21, which can also reduce the transportation cost to a certain extent.

[0044] Specifically, see Figure 1 , Figure 2 The other end of the needle core body 11 is provided with a needle tip 111. After the needle core assembly 1 is inserted into the outer tube assembly 2, the needle tip 111 extends out of the outer tube body 21. During puncture, the puncture needle can enter the vertebral body under the puncture action of the needle tip 111. The needle tip 111 includes but is not limited to a triangular prism, a bevel or a diamond shape to ensure that the needle tip 111 can smoothly pierce the human skin and pierce into the vertebral body.

[0045] Specifically, see Figure 2 , Figure 3 A first threaded joint 13 is provided at one end of the needle core body 11. The first threaded joint 13 is threadedly connected to the insert 14 and one end thereof abuts against the insert 14. A placement groove 121 and a first accommodating hole 122 that are interconnected are opened on the first handle 12. The insert 14 is clamped in the placement groove 121. Part of the needle core body 11 is located in the first accommodating hole 122. The other end of the first threaded joint 13 abuts against the bottom of the placement groove 121.

[0046] When assembling the needle core assembly 1, first thread the needle core body 11 and the insert 14 together, a first thread groove is provided on the insert 14, the needle core body 11 is screwed to screw the first threaded joint 13 into the first thread groove until one end of the first threaded joint 13 abuts against the bottom of the first thread groove 121 and is tightened, and then the needle core body 11 is passed through the first accommodating hole 122 so that the insert 14 is clamped in the placement groove 121, at which time the other end of the first threaded joint 13 abuts against the bottom of the placement groove 121.

[0047] During the operation, it may be necessary to knock the tail of the needle core assembly 1, that is, the tail of the handle part. By arranging the insert 14 on the first handle 12, the insert 14 is the part to be knocked. After the insert 14 is damaged, only the insert 14 needs to be replaced, and there is no need to replace the entire part. This further improves the reusability of the puncture needle and saves the scrapping cost.

[0048] In this embodiment, the insert 14 is made of wear-resistant stainless steel, and the first handle 12 and the second handle 22 are both made of lightweight aluminum alloy. While ensuring the overall wear resistance of the needle core assembly 1, the overall weight of the puncture needle is lighter and more flexible and convenient to use.

[0049] In some embodiments, the first threaded connector 13 and the needle core body 11 are integrally formed, thereby eliminating the need for subsequent assembly steps and reducing the assembly workload.

[0050] In this embodiment, the first threaded connector 13 and the needle core body 11 are designed as separate parts, the first threaded connector 13 is sleeved on one end of the needle core body 11, and the fitting part is welded to connect the two. The separate design can reduce processing cost and reduce processing difficulty.

[0051] Preferably, one end of the needle core body 11 is a square structure, and the corresponding first threaded joint 13 is provided with a square through hole, which is provided for anti-rotation, and prevents the first threaded joint 13 from rotating relative to the needle core body 11 after assembly, which increases the difficulty of welding and affects the welding effect. It should be noted that other anti-rotation structures may also be used, such as designing one end of the needle core body 11 into a hexagonal or elliptical structure, which is not limited in this embodiment.

[0052] In order to further enhance the stability of the needle core assembly 1, the insert 14 can be more stably arranged in the placement groove 121 of the first handle 12. In this embodiment, Figure 2 The needle core assembly 1 further comprises a fixing member 15, which is inserted through the first handle 12 and the insert 14 to fix the two. As an embodiment, the fixing member 15 is a fixing pin; as another embodiment, the fixing member 15 is a bolt.

[0053] Specifically, Figure 5 , Figure 6 As shown, a second threaded joint 23 is provided at one end of the outer tube body 21, and a second receiving hole 221 and a second thread groove 222 are provided on the second handle 22, and the second threaded joint 23 is located in the second thread groove 222 and one end thereof abuts against the bottom of the second thread groove 222. The second receiving hole 221 and the second thread groove 222 are arranged in a manner as shown in FIG. Figure 6 The upper and lower directions in the figure are arranged sequentially from top to bottom. When assembling the outer tube assembly 2, the second threaded joint 23 is screwed into the second thread groove 222 until one end of the second threaded joint 23 abuts against the bottom end of the second thread groove 222 and is tightened, and the outer tube body 21 is stably connected to the second handle 22.

[0054] During use, the outer tube body 21 is in direct contact with the skin and muscles of the human body. During the back-and-forth rotation, the second threaded joint 23 may retreat, thereby causing the outer tube body 21 to fall out of the second handle 22. In order to ensure the stability of the overall assembly of the outer tube assembly 2, the outer tube body 21 is prevented from falling out of the second handle 22. Figure 5 As shown, the outer tube assembly 2 also includes a locking piece 24, which is threadedly connected to the second handle 22 and at least partially covers the opening of the second thread groove 222. The outer tube body 21 passes through the locking piece 24, and the other end of the second threaded joint 23 abuts against the locking piece 24.

[0055] The second threaded joint 23 is provided with a left-handed thread, and correspondingly, the second thread groove is also provided with a left-handed thread. During use, when drilling clockwise, the outer tube body 21 tends to be tightened due to the left-handed thread provided on the second threaded joint 23, and the outer tube body 21 will not fall out of the first handle 22 because one end of the first threaded joint 13 can abut against the bottom of the second thread groove; when retreating counterclockwise, the needle core body 11 tends to be loosened, and the outer tube body 21 will not fall out of the first handle 22 because the other end of the second threaded joint 23 can abut against the locking member 24, wherein the thread pitch on the locking member 24 is different from the thread pitch of the second threaded joint 23, so as to achieve a locking effect and ensure the stability of the overall assembly of the outer tube assembly 2.

[0056] It should be noted that, for the sake of convenience in description, in this embodiment, the thread rotation direction of the second threaded joint 23 is defined as left-handed. In other embodiments, the thread rotation direction of the second threaded joint 23 may also be right-handed.

[0057] Furthermore, in this embodiment, the thread on the second threaded joint 23 is a large-pitch double-thread thread with a larger lead, which can improve assembly efficiency and save surgical time when assembling the outer tube assembly 2. In order to prevent the locking member 24 from slipping when being screwed onto the second handle 22, a knurling is provided on the outer peripheral surface of the locking member 24.

[0058] In some embodiments, the second threaded joint 23 and the outer tube body 21 are integrally formed, thereby eliminating subsequent assembly steps and reducing assembly workload.

[0059] In this embodiment, the second threaded joint 23 and the outer tube body 21 are designed as separate parts, the second threaded joint 23 is sleeved on one end of the outer tube body 21, and the fitting part is welded to connect the two. The separate design can reduce processing costs and reduce processing difficulty.

[0060] In this embodiment, the surface of the outer tube body 21 is provided with an indicator scale to facilitate the doctor to control the insertion depth of the puncture needle.

[0061] When the puncture needle is used, the needle core assembly 1 needs to be inserted into the outer tube assembly 2. At this time, the needle core body 11 of the needle core assembly 1 is inserted into the second handle 22 through the second receiving hole 221 to be inserted into the outer tube body 21. In order to facilitate the operation during surgery, the needle core assembly 1 is stably inserted into the outer tube assembly 2. The second handle 22 is provided with a groove 223. The two opposite side walls of the groove 223 are provided with a clamping groove 224. The first handle 12 is provided with a clamping block 123 protruding outward at both ends. The first handle 12 is accommodated in the groove 223, and one clamping block 123 is correspondingly clamped in the clamping groove 224. Through the cooperation of the clamping block 123 and the clamping groove 224, the first handle 12 is clamped on the second handle 22, so that the two are locked and fixed.

[0062] In this embodiment, if Figure 4 , Figure 7As shown, the two opposite side walls of the groove 223 are each provided with a slot 224, and the notches of the two slots 224 are diagonally arranged on the two side walls of the groove 223; a block 123 is provided at each end of the first handle 12, and the block 123 is diagonally arranged at both ends of the first handle 12. During installation, the first handle 12 and the second handle 22 are crisscrossed, and the needle core assembly 1 is inserted into the outer tube assembly 2 until the first handle 12 abuts against the bottom of the groove 223, and then the first handle 12 is rotated to the same plane as the second handle 22, at which time the block 123 is inserted into the corresponding slot 224, so that the needle core assembly 1 and the outer tube assembly 2 are locked and fixed. When the needle core assembly 1 needs to be pulled out, the first handle 12 is rotated in the opposite direction to make the block 123 escape from the slot 224.

[0063] Among them, the card slot 224 is along Figure 7 A first limiting protrusion is provided on at least one side wall in the middle and upper directions, and a limiting recess is correspondingly provided on the clamping block 123. When the clamping block 123 is clamped into the clamping groove 224, the first limiting protrusion is clamped in the limiting recess, so that a considerable degree of force needs to be applied when the clamping block 123 is clamped into or out of the clamping groove 224, so that the needle core assembly 1 is not easy to rotate out of the outer tube assembly 2.

[0064] Specifically, Figure 4 , Figure 7 As shown, two stop pins 225 are convexly disposed at the bottom of the groove 223 and the two are diagonally disposed, and the first handle 12 is provided with two stop slots 124 and the two slots are diagonally disposed, and one stop pin 225 is correspondingly accommodated in one stop slot 124 and can abut against the slot wall of the stop slot 124. When the stop slot 124 abuts against the slot wall of the stop slot 124, the first handle 12 rotates to the same plane as the second handle 22, and the stop pin 225 cooperates with the stop slot 124 to achieve the effect of auxiliary positioning.

[0065] In this embodiment, if Figure 8 As shown, a second limiting protrusion 125 is convexly provided on a side wall of the limiting groove 124 facing the groove 223. When the first handle 12 is rotated to be in the same plane as the second handle 22, one side of the limiting pin 225 abuts against the groove wall of the limiting groove 124, and the other side abuts against the second limiting protrusion 125, further ensuring that the needle core assembly 1 is not easily rotated out of the outer tube assembly 2.

[0066] Furthermore, if Figure 8 As shown, a side wall of the limit groove 124 facing the groove 223 first extends obliquely upward in the depth direction and then extends horizontally, that is, the size of the notch of the limit groove 124 is slightly smaller than the size of the limit pin 225, so that the limit pin 225 needs to exert a considerable degree of force when being inserted into or disengaged from the limit groove 124, further ensuring that the needle core assembly 1 will not easily rotate out of the outer tube assembly 2.

[0067] Preferably, the top surface of the first handle 12, the top surface of the second handle 22 and the top surface of the insert 14 together form an arc surface, which is ergonomic and comfortable for doctors to hold.

[0068] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A puncture needle, characterized in that: include: A needle core assembly (1), the needle core assembly (1) comprising a needle core body (11) and a first handle (12), one end of the needle core body (11) being detachably connected to the first handle (12); An outer tube assembly (2), the outer tube assembly (2) comprising a hollow outer tube body (21) and a second handle (22), one end of the outer tube body (21) being detachably connected to the second handle (22); The needle core assembly (1) is inserted into the outer tube assembly (2) so that the needle core body (11) is at least partially inserted into the outer tube body (21).

2. The puncture needle according to claim 1, characterized in that: The other end of the needle core body (11) is provided with a needle tip (111); after the needle core assembly (1) is inserted into the outer tube assembly (2), the needle tip (111) extends out of the outer tube body (21).

3. The puncture needle according to claim 1, characterized in that: A first threaded joint (13) is provided at one end of the needle core body (11), and the first threaded joint (13) is threadedly connected to the insert (14). The first handle (12) is provided with a placement groove (121) and a first receiving hole (122) that are interconnected. The insert (14) is clamped in the placement groove (121), and a portion of the needle core body (11) is located in the first receiving hole (122).

4. The puncture needle according to claim 3, characterized in that: The needle core assembly (1) comprises: A fixing member (15) is provided through the first handle (12) and the insert (14) so ​​as to fix the two together.

5. The puncture needle according to claim 1, characterized in that: A second threaded joint (23) is provided at one end of the outer tube body (21); a second receiving hole (221) and a second threaded groove (222) which are interconnected are provided on the second handle (22); and the second threaded joint (23) is located in the second threaded groove (222).

6. The puncture needle according to claim 5, characterized in that: The outer tube assembly (2) comprises: A locking piece (24), the locking piece (24) is threadedly connected to the second handle (22) and at least partially covers the opening of the second thread groove (222), the outer tube body (21) passes through the locking piece (24), and the second threaded joint (23) abuts against the locking piece (24).

7. The puncture needle according to any one of claims 1 to 6, characterized in that: The second handle (22) is provided with a groove (223), and opposite side walls of the groove (223) are provided with clamping grooves (224), and both ends of the first handle (12) are provided with clamping blocks (123) protruding outwards; the first handle (12) is accommodated in the groove (223), and one clamping block (123) is correspondingly clamped in one clamping groove (224).

8. The puncture needle according to claim 7, characterized in that: The two opposite side walls of the groove (223) are each provided with a clamping groove (224), and the notches of the two clamping grooves (224) are diagonally arranged on the two side walls of the groove (223); and the two ends of the first handle (12) are each provided with a clamping block (123), and the clamping blocks (123) are diagonally arranged at the two ends of the first handle (12).

9. The puncture needle according to claim 8, characterized in that: Two limit pins (225) are protruding from the bottom end of the groove (223) and are arranged diagonally. The first handle (12) is provided with two limit slots (124) and the slots of the two limit slots are arranged diagonally. One limit pin (225) is correspondingly accommodated in one limit slot (124) and can abut against the slot wall of the limit slot (124).

10. The puncture needle according to claim 3, characterized in that: The top surface of the first handle (12), the top surface of the second handle (22) and the top surface of the insert (14) together form an arc surface.

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