CN216417980U

CN216417980U - Injection device for hand joint puncture

Info

Publication number: CN216417980U
Application number: CN202122968714.XU
Authority: CN
Inventors: 耿芹
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-03
Anticipated expiration: 2031-11-30

Abstract

The utility model belongs to the field of injectors, in particular to an injection device for hand joint puncture, which comprises a push rod tube and a medicament tube which is installed at the head part of the push rod tube in a screwing way, wherein a piston is movably installed inside the medicament tube, one end of the piston, which is positioned at the push rod tube, is provided with a piston rod, the head part of the medicament tube is provided with a needle head cover in a screwing way, a needle head is fixedly installed at the middle position of the needle head cover, and a push rod is arranged inside the push rod tube; through setting up the syringe including push rod pipe and medicament pipe, wherein the medicament pipe plays the effect of injection and powder charge, the moving speed of the inside push rod of push rod pipe is restricted by the screw rod, can guarantee that the speed of pushing away the powder is even, push rod pipe top has the hand pressure disk of being connected with the screw rod in addition, can press the process that hand pressure disk control push rod promoted with the hand, thereby make things convenient for medical personnel one-hand to control the syringe, and give medical personnel's nimble control process of pushing away the powder, guarantee simultaneously that the speed of pushing away the powder is even.

Description

Injection device for hand joint puncture

Technical Field

The utility model relates to an injector field specifically is an injection device for hand joint puncture.

Background

The injection of the interphalangeal joints is a medicine injection treatment method, is suitable for interphalangeal joints, metacarpophalangeal joint rheumatoid arthritis, focal arthritis, traumatic arthritis and degenerative arthritis, generally, the puncture position is mainly the dorsal side of a finger, the skin is punctured in the middle of the proximal end of the affected interphalangeal joint or metacarpophalangeal joint until the joint position below tendons and aponeurosis, the medicine liquid is injected, the injection of the proximal end of the metacarpophalangeal joint is carried out by the same method, and the injection dosage is 0.5-1.5 ml.

The existing injector for injecting the interphalangeal joints is still a universal injector, a large amount of medicine is not needed when the injector is used for injecting the interphalangeal joints, the joints of the fingers of a patient need to be controlled by hands, the movement of the patient is prevented, and injection position deviation is caused, so that the medicine needs to be injected by one hand, and the existing universal injector is provided with a long push rod and is inconvenient to operate by one hand. Accordingly, one skilled in the art provides an injection device for hand joint penetration to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection device for hand joint puncture to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an injection device for hand joint puncture comprises a push rod tube and a medicament tube which is installed at the head part of the push rod tube in a threaded manner, a piston is movably arranged in the medicament tube, a piston rod is arranged at one end of the piston, which is positioned on the push rod tube, the head of the medicament tube is in threaded connection with a needle head cover, the middle position of the needle head cover is fixedly provided with a needle head, a push rod is arranged in the push rod pipe, a movable disc is fixedly arranged on the outer wall of the push rod and slides on the inner side wall of the push rod pipe, a hand pressing disc is arranged at the top of the push rod pipe, a screw rod is arranged in the push rod, the push rod is in threaded transmission with the screw rod, the top of activity dish is equipped with the spring, the spring housing is established the outside of screw rod, the top of screw rod is run through push rod pipe fixed connection the hand pressure dish, just the screw rod with the push rod pipe rotates to be connected.

As a further aspect of the present invention: the tooth's socket that a plurality of evenly distributed was seted up to all lateral walls a week of hand pressure dish, the top of push rod pipe corresponds hand pressure dish's side is equipped with spacing tooth, spacing tooth with push rod pipe rotates to be connected, and can with the cooperation of tooth's socket block is in order to restrict hand pressure dish's rotation.

As a further aspect of the present invention: the push rod pipe is characterized in that two limiting slide rails distributed along the axial direction are fixedly arranged on the inner side wall of the push rod pipe, and a groove is formed in the side wall, attached to the push rod pipe, of the movable disc corresponding to the limiting slide rails, so that the movable disc can slide along the limiting slide rails inside the push rod pipe.

As a further aspect of the present invention: the piston rod is located one end of piston is fixed and is equipped with the conical head, the piston rod passes through with the piston the conical head block is fixed.

As the utility model discloses further scheme again: the piston rod is located the one end of push rod has seted up the draw-in groove, the tip of push rod be equipped with convex with draw-in groove complex protruding axle.

As a further aspect of the present invention: the thread angle of the screw is forty-five degrees.

As a further aspect of the present invention: the volume of the medicament tube is ml.

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

the utility model discloses a setting up the syringe including push rod pipe and medicament pipe, wherein the medicament pipe plays the effect of injection and powder charge, the functioning speed of the inside push rod of push rod is restricted by the screw rod, can guarantee that the speed of pushing away the powder is even, push rod pipe top has the hand pressure disk of being connected with the screw rod in addition, can press the process that hand pressure disk control push rod promoted with the hand to make things convenient for medical personnel one-hand to control the syringe, and give medical personnel nimble control the process of pushing away the powder, guarantee simultaneously that the speed of pushing away the powder is even.

Drawings

FIG. 1 is a schematic view of an injection device for hand joint penetration;

FIG. 2 is a front view of an injection device for hand joint penetration;

FIG. 3 is a schematic view showing the internal structure of an injection device for hand joint puncture;

fig. 4 is a schematic cross-sectional view of an injection device for hand joint penetration.

In the figure: 1. a push rod tube; 11. a push rod; 12. a movable tray; 13. a screw; 14. a spring; 15. a limiting slide rail; 2. a drug tube; 21. a piston rod; 211. a card slot; 212. a conical head; 22. a piston; 3. a needle cover; 4. a needle head; 5. a hand pressure plate; 51. a tooth socket; 6. and a limiting tooth.

Detailed Description

Referring to fig. 1-4, in an embodiment of the present invention, an injection device for hand joint puncture includes a push rod tube 1 and a drug tube 2 threadedly mounted on a head of the push rod tube 1, a piston 22 movably mounted inside the drug tube 2, a piston rod 21 mounted at one end of the piston 22 located on the push rod tube 1, a needle cover 3 threadedly mounted on a head of the drug tube 2, a needle 4 fixedly mounted on a middle position of the needle cover 3, a push rod 11 disposed inside the push rod tube 1, a movable disc 12 fixedly disposed on an outer wall of the push rod 11, the movable disc 12 sliding on an inner side wall of the push rod tube 1, a hand pressing disc 5 disposed on a top of the push rod tube 1, a screw 13 disposed inside the push rod 11, the push rod 11 in threaded transmission with the screw 13, a spring 14 disposed on a top of the movable disc 12, the spring 14 sleeved outside the screw 13, the top of the screw 13 penetrating through the push rod tube 1 and fixedly connecting the hand 5, and the screw 13 is rotatably connected with the push rod pipe 1.

In the embodiment, through setting up the syringe including push rod pipe 1 and medicament pipe 2, wherein the inside of medicament pipe 2 is used for splendid attire medicament, and the head can install syringe needle lid 3 of taking syringe needle 4, play the effect of injection and powder charge, and the inside of push rod pipe 1 sets up push rod 11, push rod 11 is used for promoting piston rod 21 injection medicament, push rod 11 is promoted by spring 14, and the functioning speed of push rod 11 is restricted by screw 13, can guarantee to push away that the speed of medicine is even, push rod pipe 1's top has still set up hand pressure dish 5 with screw 13 fixed connection, when screw 13 rotates, hand pressure dish 5 follows the rotation, can press hand pressure dish 5 control push rod 11 process that promotes with the hand, thereby make things convenient for medical personnel one hand to control the syringe, and give medical personnel the process of nimble control pushing away medicine, guarantee to push away the speed even simultaneously.

Concretely, a plurality of evenly distributed's tooth's socket 51 has been seted up to the week lateral wall a week of hand pressure dish 5, the side that the top of push rod pipe 1 corresponds hand pressure dish 5 is equipped with spacing tooth 6, spacing tooth 6 rotates with push rod pipe 1 to be connected, and can cooperate with the rotation of tooth's socket 51 block in order to restrict hand pressure dish 5, thus, when using, can singlehanded grip push rod pipe 1 and medicament pipe 2 part, stir spacing tooth 6 with the thumb and rotate, control spacing tooth 6 and hand pressure dish 5's tooth's socket 51 cooperation, reach the effect that control hand pressure dish 5 rotated or stopped, thereby can control the process of pushing away the medicine.

Specifically, be equipped with two spacing slide rails 15 that distribute along axial direction on the inside wall of push rod pipe 1 fixedly, it sets up slottedly to correspond spacing slide rail 15 on the lateral wall of activity dish 12 with the laminating of push rod pipe 1, so that activity dish 12 slides along spacing slide rail 15 in push rod pipe 1 is inside, so, after hand pressure dish 5 is not restricted by spacing tooth 6, compressed spring 14 extrudees activity dish 12 downwards, make activity dish 12 communicate the same downstream of push rod 11, promote the inside piston rod 21 of medicament pipe 2 and piston 22 extrusion medicament, because

push rod

11 and 13 screw thread drive of screw rod, at the in-process of the downstream of push rod 11, screw rod 13 can continuously rotate, spacing slide rail 15 can restrict the circumference activity of activity dish 12, make activity dish 12 deadlocked in circumference, only can slide along spacing slide rail 15 length direction.

Specifically, a conical head 212 is fixedly disposed at one end of the piston rod 21 located at the piston 22, and the piston rod 21 and the piston 22 are engaged and fixed through the conical head 212, so that the engagement between the piston rod 21 and the piston 22 is more stable.

Specifically, the clamping groove 211 is formed in one end, located at the push rod 11, of the piston rod 21, the end portion of the push rod 11 is provided with a protruding shaft matched with the clamping groove 211, the push rod 11 and the piston rod 21 can be connected in an inserting mode in a limiting mode, and the situation of deviation in the pushing process is avoided.

Specifically, the screw thread angle of screw rod 13 is forty-five degrees, can guarantee that spring 14 promotes the in-process of push rod 11 downstream, and screw rod 13 can rotate, and the volume of medicament pipe 2 is 2ml to reduce the whole size of medicament pipe 2, make things convenient for medical personnel one-hand to hold the syringe.

The utility model discloses a theory of operation is: when the medical injector is used, a medical worker controls the finger joint of a patient with one hand, holds the push rod tube 1 of the injector with the other hand, inserts the needle head 4 of the injector into the finger joint, uses the thumb to stir the limiting teeth 6 to rotate, controls the limiting teeth 6 to be matched with the tooth grooves 51 of the hand pressing disc 5, and achieves the effect of controlling the rotation or stop of the hand pressing disc 5.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The injection device for hand joint puncture is characterized by comprising a push rod pipe (1) and a medicament pipe (2) installed at the head of the push rod pipe (1) in a threaded manner, wherein a piston (22) is movably installed inside the medicament pipe (2), one end, located at the push rod pipe (1), of the piston (22) is provided with a piston rod (21), a needle cover (3) is installed at the head of the medicament pipe (2) in a threaded manner, a needle (4) is fixedly installed at the middle position of the needle cover (3), a push rod (11) is arranged inside the push rod pipe (1), a movable disc (12) is fixedly arranged on the outer wall of the push rod (11), the movable disc (12) slides on the inner side wall of the push rod pipe (1), a hand pressing disc (5) is arranged at the top of the push rod pipe (1), a screw rod (13) is arranged inside the push rod (11), push rod (11) with screw rod (13) screw thread transmission, the top of activity dish (12) is equipped with spring (14), spring (14) cover is established the outside of screw rod (13), the top of screw rod (13) is run through push rod pipe (1) fixed connection hand pressure dish (5), just screw rod (13) with push rod pipe (1) rotates and is connected.

2. The injection device for hand joint puncture according to claim 1, characterized in that a plurality of tooth sockets (51) are formed in a circle on the circumferential side wall of the hand pressing plate (5), a limiting tooth (6) is arranged at the top of the push rod pipe (1) corresponding to the side of the hand pressing plate (5), and the limiting tooth (6) is rotatably connected with the push rod pipe (1) and can be in snap fit with the tooth sockets (51) to limit the rotation of the hand pressing plate (5).

3. The injection device for hand joint puncture according to claim 1, wherein two limiting slide rails (15) distributed along the axial direction are fixedly arranged on the inner side wall of the push rod tube (1), and a groove is formed on the side wall of the movable disc (12) attached to the push rod tube (1) corresponding to the limiting slide rails (15), so that the movable disc (12) slides along the limiting slide rails (15) inside the push rod tube (1).

4. An injection device for hand joint puncture according to claim 1, characterized in that a conical head (212) is fixedly arranged at one end of the piston rod (21) located at the piston (22), and the piston rod (21) and the piston (22) are fixed in a clamping manner through the conical head (212).

5. The injection device for hand joint puncture according to claim 1, wherein a locking groove (211) is formed at one end of the piston rod (21) located at the push rod (11), and a protruding shaft which is protruded and matched with the locking groove (211) is formed at the end of the push rod (11).

6. An injection device for hand joint puncture according to claim 1, characterized in that the thread angle of the screw (13) is forty-five degrees.

7. An injection device for hand joint puncture according to claim 1, characterized in that the volume of the medicament tube (2) is 2 ml.