CN217366022U

CN217366022U - Puncture needle

Info

Publication number: CN217366022U
Application number: CN202220092889.0U
Authority: CN
Inventors: 王延宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-09-06
Anticipated expiration: 2032-01-12

Abstract

The utility model belongs to the technical field of the pjncture needle and specifically relates to a pjncture needle utensil is related to, and especially relates to a pjncture needle utensil, and it includes needle tubing and nook closing member, the first needle file of the terminal fixedly connected with of needle tubing, first needle file seted up with the inside communicating hole of wearing of needle tubing, the terminal fixedly connected with second needle file of nook closing member, the needle tubing with blunt nature needle point has after the cooperation of nook closing member, the needle tubing front end is equipped with the through-hole. The puncture needle has the effect of reducing the trauma and complications of a patient during the puncture process.

Description

Puncture needle

Technical Field

The application relates to the field of puncture needles, in particular to a puncture needle tool.

Background

The percutaneous puncture technology under the guidance of images is an accurate minimally invasive treatment means widely applied to clinic at present, and due to the fact that the percutaneous puncture technology has high accuracy and small wound, a direct channel is established between an in-vitro target point and an in-vivo target point through puncture, and then various medical instruments are delivered into a body through a lumen of a puncture needle to complete various operations.

With the development of new treatment means such as tumor re-puncture biopsy, ablation, cryotherapy, drug injection in tumors and the like, percutaneous puncture operation under image guidance is used as a basic approach of various local treatments, and has wide application prospects.

The needle head end of the disposable puncture needle widely used in China is a bevel cut surface, sharp cutting edges are formed by the bevel cut surface and the side surfaces of the needle tube, resistance is low during needle insertion, various fascia and tough tissues can be cut rapidly, a doctor is not favorable for evaluation of puncture layers of the puncture needle during operation, the sharp needle head can possibly become the largest source of puncture injury once entering the body of a patient, and the wound and pain experience of the patient is increased.

SUMMERY OF THE UTILITY MODEL

In order to improve the above-mentioned problems, the present application provides a lancet.

The application provides a puncture needle utensil adopts following technical scheme:

the utility model provides a puncture needle utensil, includes needle tubing and nook closing member, the first needle file of terminal fixedly connected with of needle tubing, first needle file seted up with the inside communicating hole of wearing of needle tubing, the terminal fixedly connected with second needle file of nook closing member, the needle tubing with the cooperation back of nook closing member has blunt needle point, the needle tubing front end is equipped with the through-hole.

Preferably, the through hole is formed in the end part of the front end of the needle tube, the front end of the needle core is arc-shaped, and the curvature radius of the arc-shaped front end of the needle core is 0.1-0.4 mm.

Preferably, the inner edge and the outer edge of the opening end of the through hole are both provided with round corners.

Preferably, the through hole is formed in the side part of the front end of the needle tube, the front end of the needle tube is arc-shaped, and the curvature radius of the arc-shaped front end of the needle tube is 0.1-0.4 mm.

Preferably, the length of the needle tube is 140-160 mm.

Preferably, the needle tube is 90-110mm in length.

Preferably, the aperture of the penetrating hole gradually increases towards the direction away from the needle tube.

Preferably, the outer wall of the needle tube is provided with scales along the length direction.

Preferably, the second needle seat is close to the surface of the needle core is provided with a limiting groove which extends annularly around the circumferential direction of the needle core, and the surface of the needle tube, away from the first needle seat, is provided with a positioning ring matched with the limiting groove.

Preferably, one end of the first needle base, which is far away from the needle tube, is provided with a positioning groove, and the second needle base is provided with a positioning block matched with the positioning groove.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the front ends of the needle tube and the needle core are matched to form a blunt end, when an operator performs puncture operation, after the end of the puncture needle enters the body of a patient, the puncture process is conveniently completed by utilizing a blunt separation mode, other important tissue structures are not easily damaged, and when a tough tissue structure is worn on a puncture path, the resistance between the end of the blunt end and the tissue is increased, the operator can clearly feel the resistance, so that the operator is reminded that vessels or other structures exist at the front end of the needle tip, other wounds and complications are not easily caused, the painful experience of the patient is reduced, and the safety factor of the operation is improved;

2. the scales are arranged on the outer wall of the needle tube, so that an operator can easily master the puncture depth through the scales when performing puncture operation, and the puncture operation is more accurate;

3. under the cooperation of first needle file and second needle file, when the operator makes up nook closing member and needle tubing, because the hole of wearing sets up to the bucket form, make the tip of nook closing member easily enter in the needle tubing, reduce operating time, promote operating efficiency, and when the front end of nook closing member penetrated to the front end of needle tubing, make the locating piece peg graft in the constant head tank, with inject the circumference relative position between nook closing member and the needle tubing, and make the locating piece peg graft in the spacing inslot, make the connection between nook closing member and the needle tubing more stable.

Drawings

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present application.

Fig. 2 is a partial cross-sectional view of a first embodiment of the present application.

Fig. 3 is a partial structural schematic diagram of the first embodiment of the present application.

Fig. 4 is a partial structural schematic diagram of the first embodiment of the present application.

Fig. 5 is a schematic structural view of a needle tip portion in the second embodiment of the present application.

Fig. 6 is a schematic overall structure diagram of a third embodiment of the present application.

Description of reference numerals: 1. a needle tube; 2. a needle core; 3. a first needle seat; 4. a second needle seat; 5. a penetration hole; 6. a through hole; 7. calibration; 8. a limiting groove; 9. a positioning ring; 10. positioning a groove; 11. and (5) positioning the blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The first embodiment is as follows:

the embodiment of the application discloses a puncture needle tool. Referring to fig. 1-4, including needle tubing 1 and nook closing member 2, the end fixedly connected with first needle file 3 of needle tubing 1, the end fixedly connected with second needle file 4 of nook closing member 2, when to needle tubing 1 and nook closing member 2, be convenient for connect and fix a position through first needle file 3 and second needle file 4, and have blunt needle point after needle tubing 1 and the cooperation of nook closing member 2.

First needle file 3 is seted up and is passed through hole 5 with needle 1 inside communicating, be transition fit between needle 1 inner wall and the nook closing member 2, in being convenient for nook closing member 2 to penetrate needle 1, it gradually increases towards the direction aperture of keeping away from needle 1 to pass through hole 5, needle 1 length is 140 additionally 160mm, preferably 155mm, and nook closing member 2 length is slightly longer than needle 1 length, needle 1 front end is equipped with through-hole 6, and through-hole 6 sets up the tip at needle 1 front end, make needle 1 front end be uncovered setting, make needle 2 after penetrating, its tip can stretch out from through-hole 6 parts.

The inner edge and the outer edge of the opening end of the through hole 6 are both provided with round corners so as to reduce the condition of tissue damage in the puncturing process. The front end of the stylet 2 is arranged in an arc shape, and the curvature radius of the arc shape of the front end of the stylet 2 is 0.1-0.4mm, preferably 0.25 mm.

In order to facilitate accurate grasp of the puncture depth of an operator, the outer wall of the needle tube 1 is provided with scales 7 along the length direction of the needle tube, and according to the actual operation condition, the 7-degree precision of the scales can be set to be 1mm or 5mm or 10mm, so that the puncture operation of the operator is more accurate when the puncture operation is performed.

In order to facilitate the combined installation between the needle point and the needle tube 1, the surface of the second needle seat 4 close to the needle core 2 is provided with a limit groove 8 which extends annularly around the circumference of the needle core 2, the surface of the first needle seat 3 far away from the needle tube 1 is provided with a positioning ring 9 matched with the limit groove 8, when an operator combines the needle core 2 and the needle tube 1, the positioning block 11 is inserted in the limit groove 8, so that the connection between the needle core 2 and the needle tube 1 is more stable.

One end of the outer wall of the first needle base 3, which is far away from the needle tube 1, is provided with a positioning groove 10, the second needle base 4 is provided with a positioning block 11 matched with the positioning groove 10, the two opposite sides of the outer wall of the first needle base 3 are provided with friction grains, and when an operator combines the needle core 2 and the needle tube 1, the positioning block 11 is enabled to be inserted into the positioning groove 10 in a sliding mode, so that the circumferential relative position between the needle core 2 and the needle tube 1 is limited.

Example two:

referring to fig. 5, the difference from the first embodiment lies in that, in order to meet the puncturing requirements of different operations, the through hole 6 is opened at the side of the front end of the needle tube 1, the front end of the needle tube 1 is set to be circular arc, and the curvature radius of the circular arc at the front end of the needle tube 1 is 0.1-0.4mm, preferably 0.25 mm.

Example three:

referring to fig. 6, the difference from the first embodiment is that, in order to meet the puncture requirements of different operations, the length of the needle tube 1 is 90-110mm, preferably 100mm, which facilitates the precise operation of the puncture needle by the operator, and reduces the length process of the needle tool to generate bending and the like.

The implementation principle of the scheme of the application is as follows:

after the puncture needle tip got into the patient internal, be convenient for utilize blunt nature mode of separating to accomplish the puncture process, be difficult to cause the damage of other important organizational structure, and when wearing the tough organizational structure of texture on the puncture route, resistance between tip increase and the tissue through blunt nature, the experience resistance that the art person can be clear, thereby remind art person's needle point front end to have vessel or other structures, be difficult for arousing other traumas and complication, reduce patient's painful experience, promote the factor of safety of operation.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a puncture needle utensil, includes needle tubing (1) and nook closing member (2), its characterized in that: the needle tube is characterized in that a first needle seat (3) is fixedly connected to the tail end of the needle tube (1), a penetrating hole (5) communicated with the inside of the needle tube (1) is formed in the first needle seat (3), a second needle seat (4) is fixedly connected to the tail end of the needle core (2), the needle tube (1) is matched with the needle core (2) and then is provided with a blunt needle point, and a through hole (6) is formed in the front end of the needle tube (1).

2. A lancet device as claimed in claim 1, wherein: the through hole (6) is arranged at the end part of the front end of the needle tube (1), the front end of the needle core (2) is arc-shaped, and the arc-shaped curvature radius of the front end of the needle core (2) is 0.1-0.4 mm.

3. A lancet device as claimed in claim 2, wherein: and round corners are arranged at the inner edge and the outer edge of the opening end of the through hole (6).

4. A lancet device as claimed in claim 1, wherein: the through hole (6) is arranged on the side part of the front end of the needle tube (1), the front end of the needle tube (1) is arc-shaped, and the arc-shaped curvature radius of the front end of the needle tube (1) is 0.1-0.4 mm.

5. A lancet device as claimed in claim 1, wherein: the length of the needle tube (1) is 140-160 mm.

6. A lancet device as claimed in claim 1, wherein: the length of the needle tube (1) is 90-110 mm.

7. A lancet device as claimed in claim 1, wherein: the aperture of the penetrating hole (5) is gradually increased towards the direction far away from the needle tube (1).

8. A lancet device as claimed in claim 1, wherein: the outer wall of the needle tube (1) is provided with scales (7) along the length direction.

9. A lancet device as claimed in claim 1, wherein: second needle file (4) are close to the surface of nook closing member (2) has been seted up around nook closing member (2) circumference is cyclic annular spacing groove (8) that extend, keep away from first needle file (3) the surface of needle tubing (1) be equipped with spacing groove (8) matched with holding ring (9).

10. A lancet device as claimed in claim 1, wherein: one end of the first needle seat (3) far away from the needle tube (1) is provided with a positioning groove (10), and the second needle seat (4) is provided with a positioning block (11) matched with the positioning groove (10).