CN218890009U

CN218890009U - Quantitative injection device

Info

Publication number: CN218890009U
Application number: CN202320057892.3U
Authority: CN
Inventors: 王珺; 朱妙纯
Original assignee: Xiamen Meilai Medical Beauty Hospital Co ltd
Current assignee: Xiamen Meilai Medical Beauty Hospital Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-04-21
Anticipated expiration: 2033-01-09

Abstract

The utility model discloses a quantitative injection device, in particular to the technical field of injectors, which comprises an inner injection cylinder, wherein the bottom end of the inner injection cylinder is inserted with a rubber piston, the top of the rubber piston is fixedly provided with a piston rod, the top end of the piston rod penetrates through the inner injection cylinder and extends out of the top of the inner injection cylinder, the bottom end of the inner injection cylinder is fixedly provided with a connecting bottom plate, the bottom of the connecting bottom plate is provided with an injection head, the injection head is communicated with the inner part of the inner injection cylinder, the outer end of the inner injection cylinder is provided with an outer injection cylinder, and a measuring assembly is arranged between the outer injection cylinder and the inner injection cylinder. According to the utility model, the position of the positioning circular ring is regulated in advance, and the movement of the moving circular ring is limited by the positioning circular ring, so that medical and artistic staff can extract quantitative liquid medicine in the inner injection cylinder, then push the piston rod downwards, push out the quantitative liquid medicine by using the rubber piston, and the inner injection cylinder has no liquid medicine residue, thereby avoiding the waste of the liquid medicine.

Description

Quantitative injection device

Technical Field

The utility model relates to the technical field of syringes, in particular to a quantitative injection device.

Background

The syringe is a common medical device, and is mainly used for injecting liquid medicine or drawing liquid. Syringes may also be used for injection of medical devices, containers, such as scientific instruments in chromatography, through rubber diaphragms. The injector consists of a needle cylinder with a small hole at the front end and a piston core rod matched with the needle cylinder. Syringes are used to inject small amounts of liquid or to draw it into areas that are otherwise inaccessible or from those places. When the core rod is pulled out, liquid or gas is sucked in from the small hole at the front end of the needle cylinder, and when the core rod is pushed in, the liquid or gas is extruded out. This process of drawing or injecting a gas or liquid with a syringe and needle is called injection.

With the continuous progress of the medical industry, people improve their appearance through novel medical means, such as injecting the botulinum by using a syringe on the face for removing wrinkles, so that the skin becomes compact and smooth, but the injection amount of the botulinum needs to be strictly controlled, and once exceeding the standard will cause irreversible consequences, so that medical practitioners can pay attention to the use amount at the same time of injecting the botulinum, and meanwhile, the force and the speed of pushing liquid need to be considered. In order to make the attention of medical practitioners concentrate on the pushing of liquid medicine, a precise quantitative injection syringe is provided in the Chinese patent publication No. CN214435705U, and the movement of a push rod shaft is limited by a slip ring so as to achieve the aim of quantitative injection.

However, in the above-described technical solution, after the slide ring restricts the movement of the push rod shaft, a part of the liquid medicine remains in the needle tube, and the opened liquid medicine is not suitable for recycling, so that the liquid medicine remaining in the needle tube is wasted.

Therefore, it is necessary to invent a quantitative injection device to solve the above problems.

Disclosure of Invention

The utility model aims to provide a quantitative injection device, wherein the position of a positioning circular ring is regulated in advance, and the movement of a movable circular ring is limited by utilizing the positioning circular ring, so that medical and art workers can extract quantitative liquid medicine in an inner injection cylinder, then push a piston rod downwards, and push out the quantitative liquid medicine by utilizing a rubber piston, so that the inner injection cylinder has no residual liquid medicine, and the waste of the liquid medicine is avoided.

In order to achieve the above object, the present utility model provides the following technical solutions: the quantitative injection device comprises an inner injection cylinder, wherein a rubber piston is inserted into the inner bottom end of the inner injection cylinder, a piston rod is fixedly arranged at the top of the rubber piston, the top end of the piston rod penetrates through the inner injection cylinder and extends out of the top of the inner injection cylinder, a connecting bottom plate is fixedly arranged at the bottom of the inner injection cylinder, an injection head is arranged at the bottom of the connecting bottom plate and communicated with the inner part of the inner injection cylinder, an outer injection cylinder is arranged at the outer end of the inner injection cylinder, and a measuring assembly is arranged between the outer injection cylinder and the inner injection cylinder;

the measuring assembly comprises connecting rods fixedly connected with two sides of a piston rod, the bottom ends of the connecting rods extend into the space between the outer injection cylinder and the inner injection cylinder, two connecting rod bottom ends are fixedly provided with the same movable circular ring, the top ends of the movable circular ring are provided with positioning circular rings, the movable circular ring and the positioning circular ring are sleeved at the outer ends of the inner injection cylinders, the connecting rods penetrate through the positioning circular rings, and the positioning circular rings move up and down along the connecting rods and the inner injection cylinders.

Preferably, the positioning circular ring rear side is fixedly provided with two short rods, the rear ends of the two short rods are fixedly provided with the same arc plate, the arc plate is positioned at the outer end of the outer injection cylinder, the middle position of the arc plate is penetrated and provided with a screw rod, one end of the screw rod penetrates through the outer injection cylinder to extend into the positioning circular ring and is in threaded connection with the positioning circular ring, one end of the screw rod is fixedly provided with a knob, and the knob is positioned at the rear side of the arc plate.

Preferably, three sliding grooves are formed in the rear side of the outer injection cylinder, two short rods are respectively located in the two sliding grooves on the two sides, and one end of the knob penetrates through the sliding groove located in the middle.

Preferably, the front side of the inner injection cylinder is provided with a first scale mark, the front side of the outer injection cylinder is embedded with a plate-shaped magnifying glass, and the plate-shaped magnifying glass is positioned right in front of the first scale mark.

Preferably, the rear end of the outer injection tube is provided with a second scale mark, and the arc plate is positioned right behind the second scale mark.

Preferably, the top of the outer injection cylinder and the top of the inner injection cylinder are fixedly provided with the same connecting top plate, and the top end of the piston rod and the top end of the connecting rod are both in penetrating connection with the top plate.

Preferably, a push plate is fixedly arranged at the top end of the piston rod.

In the technical scheme, the utility model has the technical effects and advantages that:

the two connecting rods are utilized to drive the movable ring and the piston rod to move synchronously, and the positions of the positioning rings are adjusted in advance, so that when the tops of the movable rings are contacted with the bottoms of the positioning rings in the moving process, a worker sucking liquid automatically stops sucking the liquid medicine, quantitative liquid medicine can be sucked in the inner injection cylinder, then the piston rod is pushed downwards, and the rubber piston is utilized to push out the quantitatively measured liquid medicine, so that no liquid medicine remains in the inner injection cylinder.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a front view of the present utility model;

FIG. 2 is a rear view of the present utility model;

FIG. 3 is a cross-sectional view of the present utility model;

FIG. 4 is a top view of FIG. 3 in accordance with the present utility model;

FIG. 5 is a cross-sectional view of an inner syringe of the present utility model;

fig. 6 is an enlarged view of a of fig. 5 according to the present utility model.

Reference numerals illustrate:

the device comprises an outer injection cylinder 1, an inner injection cylinder 2, a connecting bottom plate 3, an injection head 4, a rubber piston 5, a piston rod 6, a measuring component 7, a connecting rod 71, a moving circular ring 72, a positioning circular ring 73, a short rod 74, an arc-shaped plate 75, a screw 76, a knob 77, a push plate 8, a plate-shaped magnifying glass 9 and a connecting top plate 10.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The utility model provides a quantitative injection device as shown in figures 1-5, which comprises an inner injection cylinder 2, wherein a rubber piston 5 is inserted into the bottom end of the inner injection cylinder 2, a piston rod 6 is fixedly arranged at the top of the rubber piston 5, the top end of the piston rod 6 penetrates through the inner injection cylinder 2 and extends out of the top of the inner injection cylinder 2, and in order to facilitate pushing of the piston rod 6, a push plate 8 is fixedly arranged at the top end of the piston rod 6, and the stress area of the top end of the piston rod 6 is increased by utilizing the push plate 8, so that medical and art workers can conveniently push liquid medicine in the inner injection cylinder 2;

the bottom end of the inner injection cylinder 2 is fixedly provided with a connecting bottom plate 3, the bottom of the connecting bottom plate 3 is provided with an injection head 4, the injection head 4 is communicated with the inside of the inner injection cylinder 2, the arranged connecting bottom plate 3 can be used for plugging the bottom end of the inner injection cylinder 2 to prevent the leakage of liquid medicine, and the arranged injection head 4 can be used for conveniently injecting the liquid medicine in the inner injection cylinder 2 to a designated position;

the inner injection tube 2 is used for containing liquid medicine, in order to observe the content of the liquid medicine in the inner injection tube 2, as shown in fig. 1 and 3-5, an outer injection tube 1 is arranged at the outer end of the inner injection tube 2, a first scale mark is processed at the front side of the inner injection tube 2, a plate-shaped magnifying glass 9 is inlaid at the front side of the outer injection tube 1, the plate-shaped magnifying glass 9 is positioned right in front of the first scale mark, and medical staff can observe the first scale mark on the inner injection tube 2 through the plate-shaped magnifying glass 9, so that the content of the liquid medicine measured in the inner injection tube 2 can be determined.

In order to quantitatively measure the liquid medicine, as shown in fig. 1-6, the top parts of the outer injection cylinder 1 and the inner injection cylinder 2 are fixedly provided with the same connecting top plate 10, the top ends of the piston rods 6 are all penetrated through the connecting top plate 10, a measuring assembly 7 is arranged between the outer injection cylinder 1 and the inner injection cylinder 2, the liquid medicine can be quantitatively extracted into the inner injection cylinder 2 through the arranged measuring assembly 7, and waste caused by the fact that the liquid medicine still remains in the inner injection cylinder 2 after injection is completed is avoided;

specifically, as shown in fig. 2-6, the measuring assembly 7 includes a connecting rod 71 fixedly connected to two sides of the piston rod 6, the top ends of the connecting rods 71 are connected with the top plate 10 in a penetrating manner, the bottom ends of the connecting rods 71 extend into the space between the outer injection cylinder 1 and the inner injection cylinder 2, the bottom ends of the two connecting rods 71 are fixedly provided with a same moving circular ring 72, the top ends of the moving circular ring 72 are provided with positioning circular rings 73, the moving circular ring 72 and the positioning circular ring 73 are sleeved at the outer end of the inner injection cylinder 2, the connecting rods 71 penetrate through the positioning circular ring 73, the positioning circular ring 73 moves up and down along the connecting rods 71 and the inner injection cylinder 2, two short rods 74 are fixedly arranged at the rear sides of the positioning circular ring 73, two short rods 74 are fixedly provided with a same arc 75, the arc 75 is positioned at the outer end of the outer injection cylinder 1, the middle position of the arc 75 is provided with a screw 76 in a penetrating manner, one end of the screw 76 extends into the positioning circular ring 73 and is connected with the positioning circular ring 73 in a threaded manner, one end of the screw 76 is fixedly provided with a knob 77, and the knob 77 is positioned at the rear side of the arc 75.

Before the liquid medicine is extracted, the content of the liquid medicine extracted in the inner injection cylinder 2 is determined according to the dose to be injected, at the moment, the screw rod 76 can be unscrewed in advance, then the arc plate 75 is moved upwards, in order to determine the moving distance of the arc plate 75, as shown in fig. 2, the rear end of the outer injection cylinder 1 is processed with a second scale mark, the arc plate 75 is positioned right behind the second scale mark, the arc plate 75 can be moved to a designated height through observing the second scale mark, the positioning ring 73 is driven to move to the designated height by utilizing the arc plate 75 and the short rod 74, at the moment, the liquid medicine is pumped again, at the moment, a doctor and an art worker pulls the push plate 8 to drive the piston rod 6 and the rubber piston 5 to move upwards, and pumps the liquid medicine into the inner injection cylinder 2 through the upward movement of the rubber piston 5, and also drives the two connecting rods 71 to move upwards along with the upward movement of the piston rod 6, and drives the moving ring 72 to move upwards by utilizing the connecting rods 71 until the positioning ring 73 at the top of the moving ring 72 is limited to move up until the designated dosage is reached at the moment;

then the liquid medicine is injected, the push plate 8 is used for pushing the piston rod 6, the rubber piston 5 is driven by the piston rod 6 to downwards extrude the liquid medicine in the inner injection cylinder 2, so that the liquid medicine can be injected into a designated position through the injection head 4 until the liquid medicine in the inner injection cylinder 2 is injected.

In addition, in order to facilitate the movement of the arc plate 75 at the outer end of the outer injection tube 1, as shown in fig. 2, three sliding grooves are formed in the rear side of the outer injection tube 1, two short rods 74 are respectively located in the two sliding grooves on two sides, one end of the knob 77 penetrates through the sliding groove located in the middle, the arc plate 75 can drive the short rods 74 to move upwards along the sliding grooves in the moving process, and the positions of the arc plate 75 can be fixed by tightening the knob 77 and the screw 76, so that the positions of the positioning circular rings 73 can be locked.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a quantitative injection device, includes interior syringe (2), interior syringe (2) inside bottom has pegged graft and has rubber piston (5), rubber piston (5) top is fixed to be equipped with piston rod (6), interior syringe (2) and extend interior syringe (2) top are run through on piston rod (6) top, interior syringe (2) bottom mounting is equipped with connecting plate (3), connecting plate (3) bottom is equipped with injection head (4), injection head (4) are linked together with interior syringe (2) inside, its characterized in that: an outer injection cylinder (1) is arranged at the outer end of the inner injection cylinder (2), and a measuring assembly (7) is arranged between the outer injection cylinder (1) and the inner injection cylinder (2);

the measuring assembly (7) comprises connecting rods (71) fixedly connected with two sides of a piston rod (6), the bottoms of the connecting rods (71) extend into the space between the outer injection cylinder (1) and the inner injection cylinder (2), two connecting rods (71) are fixedly provided with the same movable circular ring (72) at the bottom, the top ends of the movable circular rings (72) are provided with positioning circular rings (73), the movable circular rings (72) and the positioning circular rings (73) are sleeved at the outer ends of the inner injection cylinders (2), the connecting rods (71) penetrate through the positioning circular rings (73), and the positioning circular rings (73) move up and down along the connecting rods (71) and the inner injection cylinders (2).

2. A dosing device according to claim 1, wherein: two short rods (74) are fixedly arranged on the rear side of the positioning circular ring (73), the same arc plate (75) is fixedly arranged at the rear ends of the two short rods (74), the arc plate (75) is positioned at the outer end of the outer injection cylinder (1), a screw rod (76) is arranged in the middle of the arc plate (75) in a penetrating mode, and one end of the screw rod (76) penetrates through the outer injection cylinder (1) to extend into the positioning circular ring (73) and is connected with the positioning circular ring (73) through threads;

one end of the screw rod (76) is fixedly provided with a knob (77), and the knob (77) is positioned at the rear side of the arc plate (75).

3. A dosing device according to claim 2, characterized in that: three sliding grooves are formed in the rear side of the outer injection cylinder (1), two short rods (74) are respectively located in the two sliding grooves on the two sides, and one end of a knob (77) penetrates through the sliding groove located in the middle.

4. A dosing device according to claim 1, wherein: the front side of the inner injection cylinder (2) is provided with a first scale mark, the front side of the outer injection cylinder (1) is embedded with a plate-shaped magnifying glass (9), and the plate-shaped magnifying glass (9) is positioned right in front of the first scale mark.

5. A dosing device according to claim 2, characterized in that: the rear end of the outer injection cylinder (1) is provided with a second scale mark, and the arc plate (75) is positioned right behind the second scale mark.

6. A dosing device according to claim 1, wherein: the top of the outer injection cylinder (1) and the top of the inner injection cylinder (2) are fixedly provided with the same connecting top plate (10), and the top of the piston rod (6) and the top of the connecting rod (71) are both connected with the top plate (10) in a penetrating way.

7. A dosing device according to claim 1, wherein: a push plate (8) is fixedly arranged at the top end of the piston rod (6).