CN212661886U

CN212661886U - Puncture positioning needle structure

Info

Publication number: CN212661886U
Application number: CN202020648690.2U
Authority: CN
Inventors: 唐华松; 刘明欣
Original assignee: Shanghai Bekada Medical Technology Co ltd
Current assignee: Shanghai Bekada Medical Technology Co ltd
Priority date: 2020-04-25
Filing date: 2020-04-25
Publication date: 2021-03-09
Anticipated expiration: 2030-04-25

Abstract

The utility model relates to a puncture positioning needle structure, it is including gripping pipe and rigid coupling in the needle tubing that grips pipe one end, it has the location seal wire to peg graft in the needle tubing, the location seal wire is including location end and propelling movement end, location end rigid coupling has the location portion that has the memory function, location portion includes a plurality of arc hooks. The utility model discloses be convenient for take out location seal wire.

Description

Puncture positioning needle structure

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a puncture positioning needle structure is related to.

Background

Pulmonary nodules are isolated, round-like lesions in the lung with a diameter less than 2cm, with no pulmonary inflammation and enlargement of regional lymph nodes. In recent years, more and more patients with pulmonary nodules have difficulty in early diagnosis of pulmonary nodules, lack of specificity in clinic, are various in morphology on imaging, are difficult to judge whether benign or malignant, and often cause misdiagnosis to delay treatment. The clinical treatment of surgical operation on the patients has better effect. In the surgical operation process, the pulmonary nodule resection under the thoracoscope is mostly adopted, and the accurate positioning of the position of the nodule often becomes the key of success or failure of the operation, so that the positioning and puncture under the guidance of preoperative ultrasound is very important.

In the prior art, reference may be made to chinese patent application with publication No. CN108451599A, which discloses an improved pulmonary nodule puncture needle kit, including a puncture needle with an inner hole and a positioning guide wire penetrating through the inner hole of the puncture needle, a positioning end of the positioning guide wire is provided with a V-shaped barb, the end of the positioning guide wire opposite to the positioning end is a pushing end, a reinforcing portion is disposed at a position of the positioning guide wire close to the positioning end, a bending portion with a memory function is disposed at a position of the positioning guide wire close to the positioning end, the bending portion deforms into a straight line when the positioning guide wire is inserted into the inner hole of the puncture needle, and returns to a bent shape after the positioning guide wire leaves the inner hole of the puncture needle. According to the invention, the focus is hooked by the V-shaped barb at the positioning end of the positioning guide wire, and after the puncture needle is pulled out, the V-shaped barb on the positioning guide wire is matched with the bending part, so that the positioning guide wire is prevented from moving forwards and backwards, and the possibility that the positioning guide wire is separated from the focus and retracts into the chest wall or slides into the mediastinum is avoided.

The above prior art solutions have the following drawbacks: the end part of the positioning guide wire is provided with the V-shaped barb, so that the positioning guide wire is not influenced to be inserted into a body, but the positioning guide wire is inconvenient to take out when needing to be taken out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a puncture positioning needle structure, which is convenient for taking out the positioning guide wire.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a puncture positioning needle structure, includes and grips pipe and rigid coupling in the needle tubing that grips pipe one end, it has the location seal wire to peg graft in the needle tubing, the location seal wire includes location end and propelling movement end, location end rigid coupling has the location portion that has the memory function, location portion includes a plurality of arc hooks.

By adopting the technical scheme, the positioning guide wire is inserted into the needle tube, the positioning part is positioned in the needle tube due to the memory function of the positioning part, and the pushing end is positioned outside the needle tube; then the needle tube is inserted into the body through the holding tube, then the positioning guide wire is pushed to the position of the human tissue to be positioned through the pushing end, at the moment, the positioning part is unfolded, and one end of the positioning part, far away from the positioning guide wire, is inserted into the human tissue, so that the human tissue to be treated is positioned conveniently; when the positioning guide wire needs to be taken out, the positioning guide wire is pulled out through the pushing end; to sum up, this practicality is convenient for take out location seal wire. In addition, through setting up a plurality of arc hooks, on the one hand under the ultrasonic guidance, can increase the development area of location portion, on the other hand can make location portion and human tissue be connected more firmly.

The present invention may be further configured in a preferred embodiment as: the positioning guide wire is woven by a plurality of spiral wires.

Through adopting above-mentioned technical scheme, through setting up the spiral silk, can reduce the possibility that the location seal wire takes place to deviate in vivo.

The present invention may be further configured in a preferred embodiment as: and a first inclined plane is arranged at one end, away from the positioning guide wire, of each arc-shaped hook.

Through adopting above-mentioned technical scheme, through setting up first inclined plane, be convenient for the arc hook insert in the human tissue.

The present invention may be further configured in a preferred embodiment as: and a second inclined plane is arranged at one end of the needle tube, which is far away from the holding tube.

By adopting the technical scheme, the needle tube can be conveniently inserted into the body by arranging the second inclined plane.

The present invention may be further configured in a preferred embodiment as: the outer side wall of the holding pipe is sleeved with and fixed with a first limiting ring and a second limiting ring, the first limiting ring and the second limiting ring are parallel to each other, and the first limiting ring is arranged close to the pushing end.

Through adopting above-mentioned technical scheme, through setting up first spacing ring and second spacing ring, the user of being convenient for promotes and the pulling grips the pipe.

The present invention may be further configured in a preferred embodiment as: the holding pipe is arranged at the part between the two first limiting rings and the second limiting ring, and the outer side wall of the holding pipe is provided with an anti-skid part.

Through adopting above-mentioned technical scheme, through setting up antiskid portion, the user of being convenient for inserts the needle tubing in vivo.

To sum up, the utility model discloses a following at least one useful technological effect:

1. inserting the positioning guide wire into the needle tube, wherein the positioning part is positioned in the needle tube due to the memory function of the positioning part, and the pushing end is positioned outside the needle tube; then the needle tube is inserted into the body through the holding tube, then the positioning guide wire is pushed to the position of the human tissue to be positioned through the pushing end, at the moment, the positioning part is unfolded, and one end of the positioning part, far away from the positioning guide wire, is inserted into the human tissue, so that the human tissue to be treated is positioned conveniently; when the positioning guide wire needs to be taken out, the positioning guide wire is pulled out through the pushing end; to sum up, this practicality is convenient for take out location seal wire. In addition, by arranging the plurality of arc-shaped hooks, on one hand, the developing area of the positioning part can be increased under the ultrasonic guidance, and on the other hand, the connection between the positioning part and human tissues can be firmer;

2. the spiral wire is arranged, so that the possibility of deviation of the positioning guide wire in the body can be reduced;

3. through setting up first inclined plane, be convenient for the curved hook insert in the human tissue.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

fig. 2 is a schematic structural diagram of the second embodiment.

In the figure, 1, a tube is held; 11. an anti-slip portion; 2. a needle tube; 21. a second inclined plane; 3. positioning a guide wire; 31. a positioning end; 32. a pushing end; 33. a positioning part; 331. an arc-shaped hook; 332. a first inclined plane; 34. a spiral wire; 4. a first limit ring; 5. a second stop collar; 6. and (4) bolts.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows: a puncture positioning needle structure is shown in figure 1 and comprises a holding tube 1 and a needle tube 2 fixedly connected to one end of the holding tube 1, a positioning guide wire 3 is inserted in the needle tube 2, the positioning guide wire 3 comprises a positioning end 31 and a pushing end 32, the positioning end 31 is fixedly connected with a positioning part 33 with a memory function, shape memory alloy can be selected for materials forming the positioning part 33, and the positioning part 33 comprises two arc-shaped hooks 331. Firstly, the positioning guide wire 3 is inserted into the needle tube 2, at this time, the positioning part 33 is positioned in the needle tube 2 because of the memory function, and the pushing end 32 is positioned outside the needle tube 2; then the needle tube 2 is inserted into the body by holding the tube 1, and then the positioning guide wire 3 is pushed to the position of the human tissue to be positioned by the pushing end 32, at this time, the positioning part 33 is unfolded and one end of the positioning part 33 far away from the positioning guide wire 3 is inserted into the human tissue, thereby being convenient for positioning the human tissue to be treated; when the positioning guide wire 3 needs to be taken out, the positioning guide wire 3 is pulled out through the pushing end 32; to sum up, this practicality is convenient for take out location seal wire 3. In addition, by providing two arc-shaped hooks 331, on the one hand, the developing area of the positioning portion 33 can be increased under ultrasonic guidance, and on the other hand, the connection between the positioning portion 33 and the human tissue can be made more firm.

As shown in fig. 1, the positioning guidewire 3 is formed by braiding two spiral wires 34, and the possibility of the positioning guidewire 3 deviating in the body can be reduced by providing the spiral wires 34. One end of each curved hook 331 far away from the positioning guide wire 3 is provided with a first inclined surface 332, and the curved hooks 331 are convenient to insert into human tissues by the arrangement of the first inclined surfaces 332.

As shown in fig. 1, the end of the needle tube 2 away from the holding tube 1 is provided with a second bevel 21. The second bevel 21 is provided to facilitate the insertion of the needle cannula 2 into the body.

As shown in fig. 1, the outer side wall of the holding tube 1 is sleeved with and fixed with a first limiting ring 4 and a second limiting ring 5, the first limiting ring 4 and the second limiting ring 5 are parallel to each other, the first limiting ring 4 is arranged near the pushing end 32, and the holding tube 1 is pushed and pulled by a user conveniently by arranging the first limiting ring 4 and the second limiting ring 5. The holding tube 1 is arranged between the first limiting ring 4 and the second limiting ring 5, the outer side wall of the holding tube is provided with an anti-slip part 11, and the anti-slip part 11 is arranged, so that a user can conveniently insert the needle tube 2 into the body.

The implementation principle of the embodiment is as follows: firstly, the positioning guide wire 3 is inserted into the needle tube 2, at this time, the positioning part 33 is positioned in the needle tube 2 because of the memory function, and the pushing end 32 is positioned outside the needle tube 2; then the needle tube 2 is inserted into the body by holding the tube 1, and then the positioning guide wire 3 is pushed to the position of the human tissue to be positioned by the pushing end 32, at this time, the positioning part 33 is unfolded and one end of the positioning part 33 far away from the positioning guide wire 3 is inserted into the human tissue, thereby being convenient for positioning the human tissue to be treated; when the positioning guide wire 3 needs to be taken out, the positioning guide wire 3 is pulled out through the pushing end 32; to sum up, this practicality is convenient for take out location seal wire 3. In addition, by providing two arc-shaped hooks 331, on the one hand, the developing area of the positioning portion 33 can be increased under ultrasonic guidance, and on the other hand, the connection between the positioning portion 33 and the human tissue can be made more firm.

The present embodiment can be used under ultrasound guidance, X-ray, and CT.

Example two: a puncture positioning needle structure is shown in fig. 2, and the main difference from the first embodiment is that: first spacing ring 4 can be dismantled and connect in the lateral wall that grips pipe 1, and first spacing ring 4 can slide along the axial that grips pipe 1 and connect in the lateral wall that grips pipe 1, and threaded connection has bolt 6 on the lateral wall of first spacing ring 4, and bolt 6 keeps away from the one end of cap of bolt and can the butt in the lateral wall that grips pipe 1.

Compared with the first embodiment, the advantages are as follows: the first stop collar 4 can be moved so as to adjust the distance between the first stop collar 4 and the second stop collar 5, thereby facilitating different users to grip the holding tube 1.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A puncture positioning needle structure is characterized in that: including holding pipe (1) and rigid coupling in needle tubing (2) that hold pipe (1) one end, it has location seal wire (3) to peg graft in needle tubing (2), location seal wire (3) are including location end (31) and propelling movement end (32), location end (31) rigid coupling has location portion (33) that have the memory function, location portion (33) include a plurality of arc hooks (331).

2. A puncture positioning needle structure according to claim 1, wherein: the positioning guide wire (3) is woven by a plurality of spiral wires (34).

3. A puncture positioning needle structure according to claim 1, wherein: one end, far away from the positioning guide wire (3), of each arc-shaped hook (331) is provided with a first inclined surface (332).

4. A puncture positioning needle structure according to claim 1, wherein: and a second inclined plane (21) is arranged at one end of the needle tube (2) far away from the holding tube (1).

5. A puncture positioning needle structure according to claim 1, wherein: the utility model discloses a pipe is fixed with first spacing ring (4) and second spacing ring (5) to grip on the lateral wall of pipe (1) cover, first spacing ring (4) and second spacing ring (5) are parallel to each other, first spacing ring (4) are close to propelling movement end (32) and set up.

6. A puncture positioning needle structure according to claim 5, wherein: the holding pipe (1) is arranged at the part between the first limiting ring (4) and the second limiting ring (5), and the outer side wall of the holding pipe is provided with an anti-skid part (11).