阅读说明：本技术 乳腺结节穿刺定位针 (Mammary gland tubercle puncture positioning needle ) 是由 张航 赵佳琦 于 2020-05-20 设计创作，主要内容包括：本发明涉及一种乳腺结节穿刺定位针,包括针鞘管、针芯和穿刺针头,针芯设置于针鞘管的内部,针芯的前端与穿刺针头固定,穿刺针头上设有连接头,针鞘管的前端与连接头之间可转动、可操作脱离地连接,针芯的后端连接有软管,针芯沿周向均匀间隔设有若干倒钩且针芯通过倒钩支撑在针鞘管内部,针鞘管的管壁前部沿长度方向设有轨道槽孔,针鞘管的管壁上对应轨道槽孔的后端沿周向设有弧形卡槽,轨道槽孔与卡槽连通,针芯上设有操作脚,操作脚从卡槽中伸出针鞘管,针鞘管相对连接头转动使得操作脚进入到轨道槽孔时针鞘管前端与连接头之间脱离连接。本发明操作更加方便,提高针芯固定的牢固和稳定性。(The invention relates to a breast nodule puncture positioning needle, which comprises a needle sheath tube, a needle core and a puncture needle head, wherein the needle core is arranged inside the needle sheath tube, the front end of the needle core is fixed with the puncture needle head, the puncture needle head is provided with a connector, the front end of the needle sheath tube is rotatably and operatively connected with the connector, the rear end of the needle core is connected with a hose, the needle core is uniformly provided with a plurality of barbs along the circumferential direction at intervals, the needle core is supported inside the needle sheath tube through the barbs, the front part of the tube wall of the needle sheath tube is provided with a track slotted hole along the length direction, the rear end of the tube wall of the needle sheath tube corresponding to the track slotted hole is circumferentially provided with an arc-shaped clamping groove, the track slotted hole is communicated with the clamping groove, the needle core is provided with an operation foot, the operation foot extends out of the needle sheath tube from the clamping groove, and the needle sheath. The invention has more convenient operation and improves the firmness and stability of the fixation of the stylet.)

1. The utility model provides a mammary gland tubercle puncture pilot pin, includes sheath pipe (1), nook closing member (2) and puncture needle head (3), its characterized in that: the needle core (2) is arranged in the needle sheath tube (1), the front end of the needle core (2) is fixed with the puncture needle head (3), the puncture needle head (3) is provided with a connector (4), the front end of the needle sheath tube (1) is rotatably and operatively connected with the connector (4) in a breaking way, the rear end of the needle core (2) is connected with a hose (9), the needle core (2) is provided with a plurality of barbs (5) along the circumferential direction at even intervals, the needle core (2) is supported in the needle sheath tube (1) through the barbs (5), the front part of the tube wall of the needle sheath tube (1) is provided with a track slot hole (6) along the length direction, the rear end of the needle sheath tube (1) corresponding to the track slot hole (6) is provided with an arc-shaped clamping groove (7) along the circumferential direction, the track slot hole (6) is communicated with the clamping groove (7), the needle core (2) is provided with an operation foot (8), operation foot (8) are followed draw-in groove (7) and are stretched out needle sheath pipe (1), needle sheath pipe (1) rotates relative connector (4) and makes operation foot (8) enter into track slotted hole (6) when breaking away from between needle sheath pipe (1) front end and connector (4) and be connected.

2. The breast nodule puncturing and positioning needle of claim 1, wherein: the inside wall of connector (4) is equipped with the draw-in groove along circumference, the draw-in groove is equipped with the breach, the front end of needle sheath pipe (1) is equipped with the arch of mutually supporting with the draw-in groove, needle sheath pipe (1) front end through protruding assembly to the draw-in groove in with connector (4) rotatable coupling, work as when operation foot (8) rotate and enter into track slotted hole (6), the arch of needle sheath pipe (1) front end corresponds with the breach of draw-in groove.

3. The breast nodule puncturing and positioning needle of claim 1, wherein: the front end of the track slotted hole (6) extends to the front end of the needle sheath tube (1).

4. The breast nodule puncturing and positioning needle of claim 1, wherein: the barb (5) is arranged at the front part of the stylet (2), and the operating foot (8) is arranged at the rear part of the stylet (2).

5. The breast nodule puncturing and positioning needle of claim 1, wherein: the rear end of the needle sheath tube (1) is sealed by a needle cap (10), and the rear end of the hose (9) is connected with the needle cap (10).

6. The breast nodule puncturing and positioning needle of claim 1, wherein: the barbs (5) are uniformly arranged in three along the circumferential direction of the needle core (2) at intervals.

7. The breast nodule puncturing and positioning needle of claim 1, wherein: the needle core (2) and the puncture needle head (3) are of an integrated structure.

8. The breast nodule puncturing and positioning needle of claim 1, wherein: the outer side surface of the needle sheath tube (1) is provided with length scales along the length direction.

9. The breast nodule puncturing and positioning needle of claim 1, wherein: the outer side surface of the needle core (2) is provided with length scales along the length direction.

Technical Field

The invention belongs to the technical field of puncture needle medical instruments, and particularly relates to a breast nodule puncture positioning needle.

Background

Breast nodules are one of common diseases of women, preoperative localization is often required for breast nodules with high imaging ratings at present, and for non-palpable nodules on the surface of a breast, particularly nodules with a diameter of less than 1 cm or at a deep position, surgeons often have poor palpation and inaccurate localization, so that the surgery cannot be accurately and efficiently performed.

The traditional guide positioning needle has two types: one type is a metal needle tube with a hollow outer needle sheath, an inner needle core is a solid single-hook or double-hook soft guide wire, and after the outer needle sheath is punctured into a nodule, the inner needle core is pushed forwards to expose a fixed barb, open and fix a focus and position the focus. The defect is that the inner needle core material is soft and is often deviated in the pushing process, and the needle core guide wire cannot be fully exposed when the focus is hard.

The second type is that the outer needle sheath is a hollow metal needle tube, the inner needle, namely the positioning needle, is a solid all-metal needle core with 2-3 barbs, the inner needle can freely move along the axial direction of the hollow needle tube, when the puncture needle reaches the interior of the nodule, the inner needle core is pushed, the barbs are exposed, the focus is fixed and positioned, and finally the hollow tube puncture needle is pulled out. The puncture needle has the advantages that the inner needle core is an all-metal straight and hard straight tube, the inner needle core in the puncture part is still exposed outside the body and cannot be fixed, the risk of bending and damage of the puncture needle is increased, the infection probability of a wound surface is increased, and in addition, the inner needle head is easy to be stressed and shifted or even to deviate in the process of pulling out the outer needle sheath.

Disclosure of Invention

The invention aims to provide a mammary nodule puncture positioning needle which is more convenient to operate and improves the firmness and stability of needle core fixation.

The technical scheme adopted by the invention for solving the technical problems is to provide a mammary gland tubercle puncture positioning needle, which comprises a needle sheath tube, a needle core and a puncture needle head, wherein the needle core is arranged inside the needle sheath tube, the front end of the needle core is fixed with the puncture needle head, the puncture needle head is provided with a connector, the front end of the needle sheath tube is rotatably and operatively connected with the connector in a separated manner, the rear end of the needle core is connected with a hose, the needle core is uniformly provided with a plurality of barbs at intervals along the circumferential direction, the needle core is supported inside the needle sheath tube through the barbs, the front part of the tube wall of the needle sheath tube is provided with a track slotted hole along the length direction, the rear end of the corresponding track slotted hole on the tube wall of the needle sheath tube is circumferentially provided with an arc-shaped clamping groove, the track slotted hole is communicated with the clamping groove, the needle core is provided with an operating pin, the operating pin extends out of the needle sheath tube from the clamping groove, and the needle sheath tube rotates relative to the And is disconnected.

The inside wall of connector is equipped with the draw-in groove along circumference, the draw-in groove is equipped with the breach, the front end of needle sheath pipe is equipped with the arch of mutually supporting with the draw-in groove, needle sheath pipe front end through protruding assembly to the draw-in groove in with connector rotatable coupling, work as when the operation foot rotates and enters into the track slotted hole, the arch of needle sheath pipe front end corresponds with the breach of draw-in groove.

The front end of the track slotted hole extends to the front end of the needle sheath tube.

The barb is arranged at the front part of the needle core, and the operation foot is arranged at the rear part of the needle core.

The rear end of the needle sheath tube is sealed by a needle cap, and the rear end of the hose is connected with the needle cap.

The barbs are evenly arranged in three along the circumferential direction of the needle core at intervals.

The needle core and the puncture needle head are of an integrated structure.

The outer side surface of the needle sheath tube is provided with length scales along the length direction.

The outer side surface of the needle core is provided with length scales along the length direction.

Advantageous effects

Firstly, when the operation foot is embedded and buckled in the clamping groove, the needle sheath tube and the needle core are connected through the connector to form an integral structure, so that the integral puncture operation is convenient to carry out; when the operation needle sheath tube rotates to enable the operation foot to enter the track slotted hole, the needle sheath tube and the connector are separated and connected quickly, operation can be simplified, the situation that the needle head is stressed to shift or even shift in the process of pulling out the needle sheath tube can be effectively avoided, a relative movement state can be achieved between the needle core and the needle sheath tube at the moment, the needle core can be pushed to enable the barb to be pushed out, the needle sheath tube can be released, the fixing with the nodule is guaranteed, and the puncture needle is prevented from shifting or falling off.

Secondly, in the invention, the rear end of the stylet is connected by adopting the hose, so that the stylet is prevented from being exposed outside after puncture, and the rear end of the stylet can be fixed by applying the hose and fixing the hose on skin, thereby not only increasing the firmness and stability of positioning after puncture of the stylet, but also reducing the bending damage risk of the stylet and being beneficial to reducing the infection risk of a wound surface.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the needle sheath.

Fig. 3 is a schematic cross-sectional view of the stylet supported within the sheath tube by the barbs.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

The mammary nodule puncture positioning needle shown in fig. 1 comprises a hollow metal needle sheath tube 1, a metal section needle core 2, a puncture needle head 3, a connector 4, a barb 5, an operation foot 8, a hose 9 and a needle cap 10.

The stylet 2 is arranged inside the sheath tube 1, the front end of the stylet 2 is fixed with the puncture needle head 3, and the stylet 2 and the puncture needle head 3 are of an integrated structure. The rear end of the puncture needle head 3 is provided with a connector 4, and the front end of the needle sheath tube 1 is connected with the connector 4 in a rotatable and operable way. The inside wall of connector 4 is equipped with the draw-in groove along circumference, and the draw-in groove is equipped with the breach, and the front end of needle sheath pipe 1 is equipped with the arch of mutually supporting with the draw-in groove, and needle sheath pipe 1 front end assembles in the draw-in groove through the arch with connector 4 rotatable coupling. The front part of the stylet 2 is provided with three barbs 5 at intervals along the circumferential direction, and the stylet 2 is supported inside the sheath tube 1 through the barbs 5, as shown in figure 3. The back end of the needle sheath tube 1 is sealed by a needle cap 10, the back end of the needle core 2 is connected with a hose 9, and the back end of the hose 9 is connected with the needle cap 10. The outer side surfaces of the needle sheath tube 1 and the needle core 2 are respectively provided with length scales along the length direction, so that the puncture depth can be conveniently controlled during operation.

As shown in fig. 2, the front portion of the tube wall of the sheath tube 1 is provided with a rail slot 6 along the length direction, the front end of the rail slot 6 extends to the front end of the sheath tube 1, an arc-shaped slot 7 is circumferentially arranged on the tube wall of the sheath tube 1 corresponding to the rear end of the rail slot 6, and the rail slot 6 is communicated with the slot 7. The back part of the needle core 2 is provided with an operating foot 8, and the operating foot 8 extends out of the needle sheath tube 1 from the clamping groove 7. When the operation foot 8 is embedded and buckled in the clamping groove 7, the needle sheath tube 1 and the needle core 2 are connected through the connector 4 to form an integral structure, so that the integral puncture operation is convenient to perform; when the operation needle sheath tube 1 rotates relative to the connector 4, the operation foot 8 enters the track slot 6, the front end of the needle sheath tube 1 is disconnected with the connector 4, and the needle core 2 and the needle sheath tube 1 can move relatively. When the puncture enters the breast focus, the operation foot 8 in the clamping groove 7 is rotated to enable the stylet 2 to be in a movable state in the stylet sheath tube 1, at the moment, the bulge at the front end of the stylet sheath tube 1 corresponds to the notch of the clamping groove, so that the front end of the stylet sheath tube 1 is automatically disconnected from the connector 4, the stylet 2 is continuously pushed forwards by the operation foot 8 on the stylet 2 until the barb 5 pushes out the stylet sheath tube 1 to be released, at the moment, the stylet sheath tube 1 is pulled out along the track by fixing the operation foot 8 with hands, the exposed section is a deformable non-metal hose 9, and the flexible non-metal hose can be fixed on the skin by applying.

The average thickness of the mammary gland of the Asian female is 4-5cm, the total length of the hose 9, the needle core 2 and the puncture needle head 3 is 10cm, the guide depth is suitable for puncture guide of the mammary gland focus of most Asian female, the exposed part is the nonmetal hose 9, the length is about 5cm, the body surface is convenient to fix, and the fracture is not easy to occur.