Split type puncture needle

Abstract

The utility model relates to the technical field of medical instruments, in particular to a split type puncture needle, which comprises a needle body, a needle handle, a puncture seat, a first connecting device and a second connecting device, the needle handle comprises a needle handle main body, a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are respectively and obliquely arranged on two sides of the needle handle main body, and the puncture seat is arranged on the first branch pipe and the second branch pipe. The first connecting device is connected with the needle handle main body and the needle body, the second connecting device is connected with the needle handle main body and the puncture seat, the puncture needle further comprises a first channel, and the first channel sequentially penetrates through the needle handle main body and the needle body. A second channel communicated with the first channel is arranged in the first branch pipe, and a third channel communicated with the first channel is arranged in the second branch pipe. According to the split type puncture needle, the investment and maintenance and replacement cost of the puncture needle can be reduced, and the split type puncture needle can be suitable for minimally invasive surgeries of more different organs and is higher in practicability.

Description

Technical Field

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

[0002] A puncture needle, also known as a trocar, is a medical device for puncturing, tissue sampling and injection treatment of various organs such as the kidney, liver, lung, breast, thyroid gland, prostate, pancreas, testis, uterus, ovary, and bone marrow in minimally invasive surgery. It usually includes two components: a cannula part and a puncture needle part. For punctures of different organs, different puncture needles are required, and when the puncture needle is damaged, the entire puncture needle needs to be discarded, resulting in an increase in the input cost and usage cost of the puncture needle.

[0003] Obviously, the existing technology still needs to be improved. Summary of the Utility Model

[0004] In view of the deficiencies of the above-mentioned existing technology, the purpose of the utility model is to provide a split puncture needle to solve the technical problem that the existing puncture needle needs to be discarded as a whole when it is damaged.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A split puncture needle includes a needle body, a needle handle, a puncture seat, a first connecting device and a second connecting device. The needle handle includes a needle handle main body, and a first branch pipe and a second branch pipe which are integrally arranged with the needle handle main body respectively. The first branch pipe and the second branch pipe are respectively inclined on both sides of the needle handle main body. The first connecting device connects the needle handle main body and the needle body, and the second connecting device connects the needle handle main body and the puncture seat. The puncture needle further includes a first channel which sequentially penetrates through the needle handle main body and the needle body. A second channel communicated with the first channel is arranged in the first branch pipe, and a third channel communicated with the first channel is arranged in the second branch pipe.

[0007] The split puncture needle as described above, the puncture seat includes a puncture seat main body and a sealing cover. The puncture seat main body is connected with the second connecting device, and the sealing cover is threadedly connected with the puncture seat main body. A fourth channel is penetrated through the puncture seat main body, and the fourth channel is communicated with the first channel.

[0008] The split puncture needle as described above, a sealing groove is arranged at one end of the fourth channel far away from the first channel, and a sealing block is arranged on the inner side of the sealing cover. The sealing block is clamped with the sealing groove.

[0009] A split-type puncture needle as described above, wherein the needle body includes a needle base and a needle tube, one end of the needle tube is connected to the needle base, the first connecting device includes a connecting sleeve and a groove, the groove is provided on one side of the connecting sleeve, the needle tube passes through the connecting sleeve, the needle base is clamped in the groove, and the connecting sleeve is threadedly connected to the needle handle body.

[0010] A split-type puncture needle as described above, wherein a convex ring is provided at one end of the needle handle body close to the connecting sleeve, and a concave portion corresponding to the convex ring is provided on the needle base, and the convex ring and the concave portion are clamped and connected.

[0011] A split-type puncture needle as described above, wherein a plurality of convex blocks are provided on one side of the needle base facing the needle tube, and a plurality of clamping grooves are provided in the groove, and the plurality of clamping grooves and the plurality of convex blocks are clamped correspondingly one by one.

[0012] A split-type puncture needle as described above, wherein the second connecting device includes two bridging plates, a rotary joint and a guiding mechanism, the two bridging plates are respectively provided on both sides of the needle handle body, a hollow portion is provided on the needle handle body, the hollow portion is provided between the two bridging plates, the rotary joint is provided on the hollow portion, the rotary joint is threadedly connected to the puncture base, and the guiding mechanism is provided at the connection between the needle handle body and the puncture base.

[0013] A split-type puncture needle as described above, wherein the guiding mechanism includes a guiding block and a guiding groove, the guiding groove is provided on the outer side surface of the puncture base, the guiding groove is parallel to the axial direction of the needle handle body, the guiding block is provided on the inner side surface of the needle handle body, and the guiding block and the guiding groove are slidably connected.

[0014] Beneficial effects:

[0015] A split-type puncture needle disclosed by the present utility model includes a needle body, a needle handle, a puncture base, a first connecting device and a second connecting device. The needle handle includes a needle handle body, a first branch pipe and a second branch pipe. The needle body and the needle handle body are detachably connected through the first connecting device. When the needle body is damaged or used for puncturing different organs, the needle body can be replaced separately; the needle handle body and the puncture base are detachably connected through the second connecting device. When puncturing difficult-to-puncture organs such as bone marrow, the puncture base can be assembled on the needle handle to facilitate the operator's grasping; through the second channel of the first branch pipe or the third channel of the second branch pipe, drug injection or tissue fluid extraction is carried out; the puncture needle disclosed in this application can reduce the investment and maintenance and replacement costs of the puncture needle, and can be applied to more minimally invasive surgeries for different organs, with higher practicability. Description of the drawings

[0016] Figure 1 Structural schematic diagram of the puncture needle provided by the present utility model;

[0017] Figure 2 Cross-sectional view of the puncture needle provided by the present utility model;

[0018] Figure 3 is Figure 2 Enlarged view of part A;

[0019] Figure 4 Exploded view of the puncture needle provided by the present utility model;

[0020] Reference numerals: 1, needle body; 11, needle seat; 123, needle tube; 13, recessed part; 14, convex block; 2, needle handle; 21, needle handle main body; 22, first branch pipe; 23, second branch pipe; 24, second channel; 25, third channel; 26, convex ring; 27, hollowed-out part; 3, puncture seat; 31, puncture seat main body; 32, sealing cover; 33, fourth channel; 34, sealing groove; 35, sealing block; 4, first connecting device; 41, connecting sleeve; 42, groove; 43, clamping groove; 5, second connecting device; 51, bridging plate; 52, rotary joint; 53, guiding mechanism; 54, guiding block; 55, guiding groove; 6, first channel. Detailed implementation manners

[0021] The present utility model provides a split-type puncture needle. To make the purpose, technical solution and effects of the present utility model clearer and more definite, the following takes examples with reference to the attached drawings and further elaborates on the present utility model in detail.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "top" and "bottom" is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present utility model and simplifying the description, and cannot be construed as a limitation to the present utility model; in addition, terms such as "installation" and "connection" should be understood in a broad sense, and for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Such as Figures 1-4As shown in the figure, an embodiment of the present application provides a split puncture needle, which includes a needle body 1, a needle handle 2, a puncture seat 3, a first connecting device 4 and a second connecting device 5. The needle handle 2 includes a needle handle main body 21, a first branch pipe 22 and a second branch pipe 23 that are integrally provided with the needle handle main body 21 respectively. The first branch pipe 22 and the second branch pipe 23 are respectively inclined on both sides of the needle handle main body 21. The first connecting device 4 connects the needle handle main body 21 and the needle body 1, and the second connecting device 5 connects the needle handle main body 21 and the puncture seat 3. The puncture needle further includes a first channel 6, and the first channel 6 sequentially penetrates through the needle handle main body 21 and the needle body 1. A second channel 24 communicating with the first channel 6 is provided in the first branch pipe 22, and a third channel 25 communicating with the first channel 6 is provided in the second branch pipe 23.

[0024] A split puncture needle disclosed by the utility model includes a needle body 1, a needle handle 2, a puncture seat 3, a first connecting device 4 and a second connecting device 5. The needle handle 2 includes a needle handle main body 21, a first branch pipe 22 and a second branch pipe 23. The needle body 1 and the needle handle main body 21 are detachably connected through the first connecting device 4. When the needle body 1 is damaged or used for puncturing different organs, the needle body 1 can be replaced separately; the needle handle main body 21 and the puncture seat 3 are detachably connected through the second connecting device 5. When puncturing difficult-to-puncture organs such as bone marrow, the puncture seat 3 can be assembled on the needle handle 2 to facilitate the operator's grasping; through the second channel 24 of the first branch pipe 22 or the third channel 25 of the second branch pipe 23, drug injection or tissue fluid extraction is performed. The puncture needle disclosed in the present application can reduce the investment, maintenance and replacement costs of the puncture needle, and can be applied to minimally invasive surgeries for more different organs, with higher practicability.

[0025] The puncture seat 3 includes a puncture seat main body 31 and a sealing cover 32. The puncture seat main body 31 is connected to the second connecting device 5, and the sealing cover 32 is threadedly connected to the puncture seat main body 31. A fourth channel 33 is provided through the puncture seat main body 31, and the fourth channel 33 communicates with the first channel 6. After the puncture operation, the sealing cover 32 can be rotated to be separated from the puncture seat main body 31, and operations such as guide wire penetration, drug injection or tissue fluid extraction can be performed through the fourth channel 33 and the first channel 6.

[0026] A sealing groove 34 is provided at one end of the fourth channel 33 away from the first channel 6, and a sealing block 35 is provided on the inner side of the sealing cover 32. The sealing block 35 is clamped with the sealing groove 34. During the puncture operation, through the cooperation connection of the sealing block 35 and the sealing groove 34, tissue fluid is prevented from splashing out after passing through the first channel 6 and the fourth channel 33.

[0027] The needle body 1 includes a needle seat 11 and a needle tube 12. One end of the needle tube 12 is connected to the needle seat 11. The first connecting device 4 includes a connecting sleeve 41 and a groove 42. The groove 42 is provided on one side of the connecting sleeve 41. The needle tube 12 passes through the connecting sleeve 41, and the needle seat 11 is snap-fitted into the groove 42. The connecting sleeve 41 is threadedly connected to the needle handle main body 21. Wherein, a convex ring 26 is provided at one end of the needle handle main body 21 close to the connecting sleeve 41, and a recessed portion 13 is provided on the needle seat 11 corresponding to the convex ring 16. The convex ring 26 and the recessed portion 13 are snap-fitted and connected. The needle seat 11 is snap-fitted into the groove 42. The connecting sleeve 41 and the needle handle main body 21 are tightened and press the needle seat 11. Through the snap-fitting cooperation of the convex ring 16 and the recessed portion 13, undulations are formed to strengthen the sealing performance between the needle seat 11 and the needle handle main body 21.

[0028] A plurality of convex blocks 14 are provided on one side of the needle seat 11 facing the needle tube 12. A plurality of snap-fitting grooves 43 are provided in the groove 42. The plurality of snap-fitting grooves 43 and the plurality of convex blocks 14 are snap-fitted one by one to prevent the needle tube 12 from rotating during use, which may affect the stability of the needle tube 12 and the sealing performance between the needle seat 11 and the needle handle main body 21.

[0029] The second connecting device 5 includes two bridging plates 51, a rotary joint 52 and a guiding mechanism 53. The two bridging plates 51 are respectively provided on both sides of the needle handle main body 21. A hollow portion 27 is provided on the needle handle main body 21, and the hollow portion 27 is provided between the two bridging plates 51. The rotary joint 52 is provided on the hollow portion 27, and the rotary joint 52 is threadedly connected to the puncture seat 3. The guiding mechanism 53 is provided at the connection between the needle handle main body 21 and the puncture seat 3. Wherein, the guiding mechanism 53 includes a guiding block 54 and a guiding groove 55. The guiding groove 55 is provided on the outer side surface of the puncture seat 3, and the guiding groove 55 is parallel to the axial direction of the needle handle main body 21. The guiding block 54 is provided on the inner side surface of the needle handle main body 21, and the guiding block 54 is slidably connected to the guiding groove 55. The two bridging plates 51 limit the position of the rotary joint 52. One end of the puncture seat 3 passes through the rotary joint 52, and the guiding block 54 restricts the rotation of the puncture seat 3. By rotating the rotary joint 52, the puncture seat 3 penetrates deeper towards the side of the needle handle main body 21, and the puncture seat 3 does not need to be rotated, reducing the required movement space when assembling the puncture seat 3.

[0030] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions and the inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A split puncture needle, characterized in that: The invention comprises a needle body (1), a needle handle (2), a puncture seat (3), a first connecting device (4) and a second connecting device (5); the needle handle (2) comprises a needle handle body (21), and a first branch tube (22) and a second branch tube (23) respectively arranged integrally with the needle handle body (21); the first branch tube (22) and the second branch tube (23) are respectively arranged obliquely on both sides of the needle handle body (21); the first connecting device (4) connects the needle handle body (21) and the needle body (1); the second connecting device (5) connects the needle handle body (21) and the puncture seat (3); the puncture needle further comprises a first channel (6); the first channel (6) passes through the needle handle body (21) and the needle body (1) in sequence; a second channel (24) communicating with the first channel (6) is arranged in the first branch tube (22); and a third channel (25) communicating with the first channel (6) is arranged in the second branch tube (23).

2. A split puncture needle according to claim 1, characterized in that: The puncture seat (3) comprises a puncture seat body (31) and a sealing cover (32); the puncture seat body (31) is connected to the second connecting device (5); the sealing cover (32) is threadedly connected to the puncture seat body (31); a fourth channel (33) is provided through the puncture seat body (31); and the fourth channel (33) is communicated with the first channel (6).

3. A split puncture needle according to claim 2, characterized in that: A sealing groove (34) is provided on one end of the fourth channel (33) away from the first channel (6), and a sealing block (35) is provided on the inner side of the sealing cover (32), and the sealing block (35) is clamped with the sealing groove (34).

4. A split puncture needle according to claim 1, characterized in that: The needle body (1) comprises a needle seat (11) and a needle tube (12), one end of the needle tube (12) is connected to the needle seat (11), the first connecting device (4) comprises a connecting sleeve (41) and a groove (42), the groove (42) is arranged on one side of the connecting sleeve (41), the needle tube (12) is inserted into the connecting sleeve (41), the needle seat (11) is clamped in the groove (42), and the connecting sleeve (41) is threadedly connected to the needle handle body (21).

5. A split puncture needle according to claim 4, characterized in that: A convex ring (26) is provided on one end of the needle handle body (21) close to the connecting sleeve (41), and a recessed portion (13) is provided on the needle seat (11) corresponding to the convex ring (26), and the convex ring (26) and the recessed portion (13) are snap-connected.

6. A split puncture needle according to claim 4, characterized in that: A plurality of protrusions (14) are provided on the side of the needle seat (11) facing the needle tube (12), a plurality of snap-fit ​​grooves (43) are provided in the groove (42), and the plurality of snap-fit ​​grooves (43) and the plurality of protrusions (14) are snap-fitted in a one-to-one correspondence.

7. The split puncture needle according to claim 1, characterized in that: The second connecting device (5) comprises two bridging plates (51), a rotating joint (52) and a guiding mechanism (53), wherein the two bridging plates (51) are respectively arranged on both sides of the needle handle body (21), the needle handle body (21) is provided with a hollow portion (27), the hollow portion (27) is arranged between the two bridging plates (51), the rotating joint (52) is arranged on the hollow portion (27), the rotating joint (52) is threadedly connected to the puncture seat (3), and the guiding mechanism (53) is arranged at the connection between the needle handle body (21) and the puncture seat (3).

8. A split puncture needle according to claim 7, characterized in that: The guide mechanism (53) comprises a guide block (54) and a guide groove (55); the guide groove (55) is arranged on the outer side surface of the puncture seat (3); the guide groove (55) is parallel to the axial direction of the needle handle body (21); the guide block (54) is arranged on the inner side surface of the needle handle body (21); the guide block (54) and the guide groove (55) are slidably connected.

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