CN215741018U

CN215741018U - Medical quantitative injector

Info

Publication number: CN215741018U
Application number: CN202121779496.9U
Authority: CN
Inventors: 尤军; 秦志慧; 王光斌; 张雷; 孙娟
Original assignee: Chengdu Angel Wing Medical Beauty Hospital Co ltd
Current assignee: Chengdu Angel Wing Medical Beauty Hospital Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-02-08
Anticipated expiration: 2031-08-02

Abstract

The utility model relates to the technical field of injectors, in particular to a medical quantitative injector, which comprises a needle cylinder, wherein a hand-held part is arranged at the end part of the needle cylinder, a round pipe is movably inserted in the needle cylinder, a first scale mark is arranged on the outer side of the round pipe, a piston is arranged at one end of the round pipe arranged in the needle cylinder, the position of a ring is indicated by the medical quantitative injector according to the dose to be injected, a user can rotate a pull ring to drive a screw rod to rotate, the screw rod drives an indicating ring to move up and down through a threaded seat and a sliding block until the indicating ring moves to the scale required by the first scale mark, the user can use the injector to push the piston to the bottommost part and pull a butting disc upwards to be butted with the indicating ring and a limiting rod so as to quantitatively extract liquid, and finally the quantitatively extracted liquid is injected into a patient body, the operation is simple, and the accuracy of adjusting the quantitative liquid extraction is high.

Description

Medical quantitative injector

Technical Field

The utility model relates to the technical field of medical quantitative injectors, in particular to a medical quantitative injector.

Background

Syringes are a common medical device, and the principle of syringes was proposed by kathler, italian as early as the 15 th century. Primarily with a needle to withdraw or inject gas or liquid, syringes may also be used for injection through rubber septa in medical devices, containers, scientific instruments such as in some chromatography.

In clinical injection, the liquid medicine in the syringe is often required to be injected for several times, the existing injector needs an operator to control the injection amount according to scales on the syringe, the injection amount cannot be accurately controlled, the situation that the injection amount is larger or smaller easily occurs, and medical accidents are possibly caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects that the injection quantity cannot be accurately controlled in the prior art and the like, and provides a medical quantitative injector.

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

designs a medical quantitative injector, which comprises a syringe, wherein the end part of the syringe is provided with a hand-held part, a round tube is movably inserted in the needle cylinder, a first scale mark is arranged on the outer side of the round tube, a piston is arranged at one end of the circular tube arranged in the needle cylinder, a group of guide grooves are radially arranged on the circular tube in a penetrating way, a screw rod is rotatably connected in the circular tube, and the outer side of the screw rod is connected with a thread seat in a threaded manner, the outer side of the round tube is sleeved with an indicating ring, a sliding block which is arranged in the guide groove in a sliding manner is fixedly connected between the indicating ring and the thread seat, the end of the round tube far away from the piston is provided with a butt plate, one end of the screw rod close to the butt plate penetrates through the butt plate and is provided with a square hole, the square hole is movably inserted with a square tube inside, a spring is fixedly connected between the square tube and the inner wall of the square hole, and a limiting rod which is abutted to the indicating ring is arranged on the end face of the handheld portion.

Preferably, the limiting rod is in threaded connection with the handheld portion.

Preferably, the outside fixed mounting of square pipe has the carousel, the bottom of carousel and the top of butt joint dish all are provided with the protruding piece of friction, the tip of square pipe rotates there is the pull ring.

Preferably, the outer side of the abutting disc is buckled with an end cover.

Preferably, the needle cylinder is of a transparent structure, and a second scale mark opposite to the indication direction of the first scale mark is arranged on the outer side of the needle cylinder.

The medical quantitative injector has the beneficial effects that: according to the utility model, the position of the ring is indicated according to the dose to be injected, a user can rotate the pull ring to drive the screw rod to rotate, the screw rod drives the indicating ring to move up and down through the threaded seat and the sliding block until the indicating ring moves to the scale required by the first scale mark, at the moment, the user can use the injector to push the piston to the bottommost part, the abutting disc is pulled upwards and abutted against the indicating ring and the limiting rod, so that the liquid is quantitatively extracted, and finally, the quantitatively extracted liquid is injected into the body of a patient.

Drawings

FIG. 1 is a schematic structural view of a medical quantitative injector according to the present invention;

fig. 2 is a schematic structural view of a circular tube of the medical quantitative injector according to the present invention.

In the figure: 1. a needle cylinder; 2. a circular tube; 3. a piston; 4. a guide groove; 5. a screw; 6. a threaded seat; 7. an indication ring; 8. a slider; 9. a butting tray; 10. a square hole; 11. a square tube; 12. a spring; 13. a limiting rod; 14. a turntable; 15. a pull ring; 16. an end cap; 17. a second scale mark; 18. a first scale mark; 19. a hand-held portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, a medical quantitative injector comprises a needle cylinder 1, a hand-held part 19 is arranged at the end of the needle cylinder 1, a round tube 2 is movably inserted into the needle cylinder 1, a first scale mark 18 is arranged on the outer side of the round tube 2, a piston 3 is arranged at one end of the round tube 2 arranged in the needle cylinder 1, a group of guide grooves 4 are radially penetrated and arranged on the round tube 2, a screw 5 is rotatably connected into the round tube 2, a thread seat 6 is screwed on the outer side of the screw 5, an indicating ring 7 is sleeved on the outer side of the round tube 2, a sliding block 8 which is fixedly connected between the indicating ring 7 and the thread seat 6 and is slidably arranged in the guide grooves 4, an abutting disc 9 is arranged at one end of the round tube 2 far away from the piston 3, a square hole 10 is arranged on the abutting disc 9, one end of the screw 5 close to the abutting disc 9 is penetrated and is provided with the square hole 10, a square tube 11 is movably inserted into the square hole 10, a spring 12 is fixedly connected between the square tube 11 and the inner wall of the square hole 10, the end face of the hand-held part 19 is provided with a limit rod 13 which is abutted with the indicating ring 7.

The limiting rod 13 is in threaded connection with the handheld portion 19, and the limiting rod 13 mounted in a threaded mode is convenient to detach, so that the piston 3 and the circular tube 2 are detached to be disinfected.

The outside fixed mounting of square pipe 11 has carousel 14, and the bottom of carousel 14 all is provided with the protruding piece of friction with the top of butt dish 9, and square pipe 11's tip rotates has pull ring 15, rubs fixedly through carousel 14 and butt dish 9 to avoid screw rod 5 to rotate, influence quantitative accuracy.

The outer side of the abutting disc 9 is buckled with an end cover 16, the end cover 16 can enhance the attractiveness of the injector, and the square tube 11 is sleeved inside the end cover to avoid the rotation of the screw rod 5 caused by the error touch.

The syringe 1 is of a transparent structure, the second scale mark 17 which is opposite to the indication direction of the first scale mark 18 is arranged on the outer side of the syringe 1, and the transparent syringe 1 is convenient for observing the extraction condition of the liquid medicine from the outside.

A working mode; before using, the user can come the position of instruction circle 7 as required injection's dose, open end cover 16, pull-up pull ring 15 makes carousel 14 and butt dish 9 phase separation, the user can rotate pull ring 15 this moment and make it drive screw rod 5 and rotate, screw rod 5 drives instruction circle 7 through screw thread seat 6 and sliding block 8 and reciprocates, it can to move to the required scale of first scale mark 18 until instruction circle 7, the user can use this syringe this moment, push away piston 3 to bottommost, upwards stimulate butt dish 9, have with instruction circle 7 and gag lever post 13 butt, thereby ration extraction liquid, finally with the liquid injection of ration extraction in the patient internal can, and is easy to operate, and the degree of accuracy of adjusting the ration extraction liquid is high.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A medical quantitative injector, comprising a syringe (1), wherein the end of the syringe (1) is provided with a hand-held part (19), characterized in that: the inner part of the needle cylinder (1) is movably inserted with a round tube (2), a first scale mark (18) is arranged on the outer side of the round tube (2), a piston (3) is arranged at one end of the round tube (2) arranged in the needle cylinder (1), a group of guide grooves (4) are arranged in the round tube (2) in a penetrating manner along the radial direction, a screw rod (5) is connected to the inner part of the round tube (2) in a rotating manner, a thread seat (6) is connected to the outer side of the screw rod (5) in a threaded manner, an indicating ring (7) is sleeved on the outer side of the round tube (2), a sliding block (8) which is arranged in the guide grooves (4) in a sliding manner is fixedly connected between the indicating ring (7) and the thread seat (6), an abutting disc (9) is arranged at one end of the round tube (2) far away from the piston (3), one end of the screw rod (5) close to the abutting disc (9) penetrates through the abutting disc (9) and is provided with a square hole (10), the square tube (11) is movably inserted into the square hole (10), a spring (12) is fixedly connected between the square tube (11) and the inner wall of the square hole (10), and a limiting rod (13) which is abutted to the indicating ring (7) is arranged on the end face of the handheld part (19).

2. A medical dosing syringe according to claim 1 characterised in that: the limiting rod (13) is in threaded connection with the handheld part (19).

3. A medical dosing syringe according to claim 1 characterised in that: the outside fixed mounting of square pipe (11) has carousel (14), the bottom of carousel (14) and the top of butt joint dish (9) all are provided with the protruding piece of friction, the tip of square pipe (11) rotates there is pull ring (15).

4. A medical dosing syringe according to claim 1 characterised in that: an end cover (16) is buckled on the outer side of the abutting disc (9).

5. A medical dosing syringe according to claim 1 characterised in that: the needle cylinder (1) is of a transparent structure, and a second scale mark (17) which is opposite to the indication direction of the first scale mark (18) is arranged on the outer side of the needle cylinder (1).