CN220656112U - Medical and aesthetic appliance for injection - Google Patents

Abstract

The utility model belongs to the field of medical equipment, in particular to a medical instrument for injection, which comprises an injection tube, wherein a piston head is arranged on the inner side of the injection tube in a sliding manner, and a threaded part is arranged on the left side of the injection tube; the injection assembly is arranged on the piston head and the threaded part and comprises a connecting part, a sharp needle head, a blunt needle head, a blocking block, a needle body and a needle tail, wherein the connecting part is in threaded connection with the outer side of the threaded part, and the sharp needle head is fixedly arranged on the left side of the connecting part. The injection needle is reasonable in design, the sharp needle and the blunt needle can be coaxially arranged, a user can conveniently move the injection through the blunt needle after inserting the sharp needle into the skin, the needle does not need to be switched, the operation is simple, the injection difficulty is relatively low, the practice cost of the user is reduced, the movement distance of the blunt needle is limited, the position change caused by the fact that the user touches the blunt needle by mistake during the injection of the liquid is avoided, and the reliability of the injection is further ensured.

Description

Medical and aesthetic appliance for injection

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a medical instrument for injection.

Background

At present, in the field of medical cosmetology, micro-shaping is very common, namely, some fillers (such as hyaluronic acid) are injected into specific parts of a human body, and in the early development stage of injection cosmetology, most doctors adopt sharp needle injection, the sharp needle injection is carried out by pushing liquid medicine after penetrating to a proper depth on skin, the deep subcutaneous tissues can be injected, the sharp needle injection is simple and convenient to operate, and the needle head is accurate in positioning, difficult to run and the like, so that the injection mode with highest global use rate is realized, and the injection mode is suitable for injection treatment of fine parts such as masseter hypertrophy, filling and wrinkle removal, filling nasolabial folds and the like; however, skin tissue is easy to be extruded or torn by a needle tube in the sharp needle injection process, the thorn feeling is strong, pain feeling or secondary wound can be generated, the skin injury is heavy, and blood stasis or blue stasis even more serious complications are easy to be caused after injection, so that an injection medical and aesthetic instrument adopting a blunt needle injection mode is needed;

the publication No. CN215231091U discloses a medical and aesthetic instrument for injection, which comprises a syringe needle cylinder and a male connector communicated with the syringe needle cylinder, wherein a needle head is connected to the male connector, the needle head comprises a female connector and a blunt needle body which are integrally connected, one side of the blunt needle body, far away from the female connector, is provided with a blunt needle head, and one side, close to the blunt needle head, is also uniformly provided with liquid injection holes; the blunt needle body is also sleeved with a baffle, a flexible piece is connected between the baffle and the female connector, a through hole for passing through the blunt needle body is arranged at the lower part of the baffle, and a sharp needle head is fixedly arranged above the through hole;

when the medical and aesthetic instrument for injection is used, as the blunt needle and the sharp needle are not coaxial, the skin layer opening generated by the sharp needle is not convenient to switch to the blunt needle mobile injection operation when in actual injection, and a user needs to practice more to perform skillful operation, so that the practice cost and the injection difficulty are increased, and the medical and aesthetic instrument for injection is provided.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a medical and aesthetic appliance for injection.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a medical device for injection comprising:

the injection tube is characterized in that a piston head is slidingly installed in the inner side of the injection tube, and a threaded part is arranged on the left side of the injection tube;

an injection assembly mounted on the piston head and the threaded portion.

Preferably, the injection assembly comprises a connecting part, a sharp needle head, a blunt needle head, a blocking block, a needle body and a needle tail, wherein the connecting part is in threaded connection with the outer side of the threaded part, the sharp needle head is fixedly arranged on the left side of the connecting part, the blunt needle head is arranged on the inner side of the sharp needle head, the blocking block is fixedly arranged on the right side of the blunt needle head, the needle body is fixedly arranged on the right side of the blocking block, the needle tail is fixedly arranged on the right side of the needle body, and the needle body is slidably arranged on the inner side of the piston head and the connecting part.

Preferably, threads are arranged on the inner right side of the connecting portion, and a narrow opening is arranged on the left side of the connecting portion.

Preferably, the minimum inner diameter of the sharp needle is larger than the outer diameter of the blunt needle, and one end of the sharp needle is sleeved outside the connecting part.

Preferably, one end of the blunt needle is arranged to be a semicircular end face, and liquid inlets are formed in one side of the blunt needle, one side of the blocking block and one side of the needle body.

Preferably, the outline of the outer end surface of the blocking block is parallel to the outline of the inner section of the sharp needle.

Preferably, the outside of the needle body is provided with liquid inlet holes which are sequentially arranged from left to right.

Preferably, the cross-sectional circle of the needle tail is larger than the cross-sectional circle of the needle body.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the medical and aesthetic instrument for injection, the sharp needle head and the blunt needle head can be coaxially arranged through the injection assembly, so that a user can conveniently move the injection through the blunt needle head after inserting the sharp needle head into the skin, the needle head does not need to be switched, the operation is simple, the injection difficulty is relatively low, and the exercise cost of the user is reduced.

(2) According to the medical and aesthetic instrument for injection, the blocking block is arranged, so that the movement distance of the blunt needle is limited, the position change caused by the fact that a user touches the blunt needle by mistake during liquid injection is avoided, and the reliability of liquid injection is further ensured.

Drawings

Fig. 1 is a schematic perspective view of a medical device for injection according to the present utility model;

fig. 2 is a schematic diagram illustrating a disassembled structure of a medical device for injection according to the present utility model;

FIG. 3 is a schematic cross-sectional view of an injection medical device according to the present utility model;

FIG. 4 is an enlarged schematic view of the portion A in FIG. 3;

fig. 5 is an enlarged schematic view of a portion B in fig. 2.

In the figure: 1. a syringe; 2. a piston head; 3. a threaded portion; 4. a connection part; 5. a sharp needle; 6. a blunt needle; 7. a blocking block; 8. a needle body; 9. a needle tail; 10. and a liquid inlet hole.

Detailed Description

Examples

Referring to fig. 1 to 5, a medical device for injection comprises a syringe 1, wherein a piston head 2 is slidingly arranged on the inner side of the syringe 1, and a threaded part 3 is arranged on the left side of the syringe 1; an injection assembly mounted on the piston head 2 and the threaded portion 3.

In this embodiment, the injection assembly comprises a connecting part 4, a sharp needle 5, a blunt needle 6, a blocking block 7, a needle body 8 and a needle tail 9, wherein the connecting part 4 is in threaded connection with the outer side of the threaded part 3, the connecting part 4 is matched with the threaded part 3 to facilitate the installation of a needle tube structure, the sharp needle 5 is fixedly installed on the left side of the connecting part 4, the blunt needle 6 is arranged on the inner side of the sharp needle 5, the blocking block 7 is fixedly installed on the right side of the blunt needle 6, the needle body 8 is fixedly installed on the right side of the blocking block 7, the needle tail 9 is fixedly installed on the right side of the needle body 8, the needle body 8 is slidably installed on the inner sides of the piston head 2 and the connecting part 4, threads are arranged on the inner right side of the connecting part 4, a narrow opening is arranged on the left side of the connecting part 4 and used for narrowing an injection aperture, the minimum inner diameter of the sharp needle 5 is larger than the outer diameter of the blunt needle 6, the limiting size can be convenient for blunt syringe needle 6 slide in sharp syringe needle 5, the outside at connecting portion 4 is established to one end cover of sharp syringe needle 5, blunt syringe needle 6's one end sets up to the semicircle terminal surface, the injury that the reducible removal of semicircle terminal surface caused, alleviate the painful sense of injection, the inlet has all been seted up to blunt syringe needle 6, the one side of blocking piece 7 and needle body 8, the inlet can be convenient for the injection get into blunt syringe needle 6 in, the outer terminal surface contour line of blocking piece 7 is parallel with sharp syringe needle 5's interior cross-section contour line, blocking piece 7 is used for spacing blunt syringe needle 6's movable distance, avoid because its unlimited removal causes the mistake touch, the inlet opening 10 has been seted up in the outside of needle body 8, and arrange in proper order from a left side to the right side, the cross-section circle of needle tail 9 is greater than the cross-section circle of needle body 8, needle tail 9 is used for increasing the injection atress area, improve convenient to use.

Through the structure, the medical device for injection provided by the utility model can enable the sharp needle 5 and the blunt needle 6 to be coaxially arranged, is convenient for a user to move injection through the blunt needle 6 after the sharp needle 5 is inserted into the skin, does not need to switch the needle, is simple to operate, has relatively low injection difficulty, reduces the exercise cost of the user, can enable the movement distance of the blunt needle 6 to be limited, prevents the user from mistakenly touching the blunt needle 6 to change the position of the blunt needle when injecting the liquid, further ensures the reliability of injection, and particularly is characterized in that the sharp needle 5 is firstly inserted into the skin of a patient to a proper depth, the needle tail 9 is pushed to enable the blunt needle 6 to move to a proper position subcutaneously through the needle body 8, and the piston head 2 is pushed to move in the injection tube 1, so that liquid enters the blunt needle 6 through the liquid inlet 10 and enters the human body.

Claims (7)

1. A medical device for injection, comprising:

a piston head (2) is mounted on the inner side of the injection tube (1) in a sliding manner, and a threaded part (3) is arranged on the left side of the injection tube (1);

an injection assembly mounted on the piston head (2) and the threaded portion (3);

injection subassembly includes connecting portion (4), sharp syringe needle (5), blunt syringe needle (6), blocking piece (7), needle (8) and needle tail (9), connecting portion (4) threaded connection is in the outside of screw portion (3), sharp syringe needle (5) fixed mounting is in the left side of connecting portion (4), blunt syringe needle (6) set up the inboard at sharp syringe needle (5), blocking piece (7) fixed mounting is on the right side of blunt syringe needle (6), needle (8) fixed mounting is on the right side of blocking piece (7), needle tail (9) fixed mounting is on the right side of needle (8), needle (8) slidable mounting is in the inboard of connecting portion piston head (4) and 2.

2. The medical device for injection according to claim 1, wherein the inner right side of the connecting part (4) is provided with threads, and the left side of the connecting part (4) is provided with a narrow opening.

3. The medical device for injection according to claim 2, wherein the minimum inner diameter of the sharp needle (5) is larger than the outer diameter of the blunt needle (6), and one end of the sharp needle (5) is sleeved outside the connecting part (4).

4. A medical and aesthetic instrument for injection according to claim 3, characterized in that one end of the blunt needle (6) is arranged as a semicircular end face, and liquid inlets are arranged on one side of the blunt needle (6), the blocking block (7) and the needle body (8).

5. Medical device for injection according to claim 4, characterized in that the outer end surface contour of the blocking piece (7) is parallel to the inner cross-sectional contour of the sharp needle (5).

6. The medical device for injection according to claim 5, wherein the outer side of the needle body (8) is provided with liquid inlet holes (10) which are sequentially arranged from left to right.

7. The medical device for injection according to claim 6, wherein the cross-sectional circle of the needle tail (9) is larger than the cross-sectional circle of the needle body (8).