CN213554463U

CN213554463U - Syringe of accurate material that pushes away for pharmacy experiments

Info

Publication number: CN213554463U
Application number: CN202021177297.6U
Authority: CN
Inventors: 张垚; 罗建峰; 王浩
Original assignee: Air Force Medical University of PLA
Current assignee: Air Force Medical University of PLA
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-06-29
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to the technical field of injectors, and discloses an injector for accurately pushing materials for pharmaceutical experiments, which comprises a needle cylinder and a needle head fixedly connected to the bottom of the needle cylinder, the top of the needle cylinder is fixedly connected with a limiting plate, the middle part of the limiting plate is provided with a limiting hole, a plunger is arranged in the needle cylinder, a pull rod is fixedly connected with the middle part of the side wall of the top of the plunger, the upper end of the pull rod penetrates through the limiting hole and extends upwards, a row of teeth are fixedly connected on one side rod wall of the pull rod along the vertical direction, a sliding cylinder is sleeved on the pull rod positioned right above the limiting plate, the wall of the sliding barrel close to the teeth is provided with a sliding hole, a sliding rod is connected in the sliding hole in a sliding way, the slide bar is close to the one end fixedly connected with pinion rack of pull rod, the pinion rack meshes with the tooth mutually, fixedly connected with spring on the lateral wall that the tooth was kept away from to the pinion rack. The utility model discloses can be accurate push away the appointed volume of liquid of material.

Description

Syringe of accurate material that pushes away for pharmacy experiments

Technical Field

The utility model relates to an injector technical field especially relates to an accurate syringe that pushes away material for pharmacy experiments.

Background

Syringes are a common medical device, and the principle of syringes was proposed by kathler, italian as early as the 15 th century. Mainly using a needle to extract or inject gas or liquid; a syringe is also a medical device, container, scientific instrument like some in chromatography, that injects through a rubber septum.

However, the precision of the injection quantity of the injector is not convenient to adjust in the using process of the traditional injector, and therefore, an injector capable of accurately pushing materials for pharmaceutical experiments is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the use process of the traditional injector in the prior art and providing an injector for accurately pushing materials for pharmaceutical experiments.

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

an injector for accurately pushing materials for pharmaceutical experiments comprises a needle cylinder and a needle head fixedly connected to the bottom of the needle cylinder, wherein a limiting plate is fixedly connected to the top of the needle cylinder, a limiting hole is formed in the middle of the limiting plate, a plunger is arranged in the needle cylinder, a pull rod is fixedly connected to the middle of a side wall at the top of the plunger, the upper end of the pull rod penetrates through the limiting hole and extends upwards, a row of teeth are fixedly connected to one side rod wall of the pull rod along the vertical direction, a sliding cylinder is sleeved on the pull rod right above the limiting plate, a sliding hole is formed in the cylinder wall, close to the teeth, of the sliding cylinder, a sliding rod is connected in the sliding hole in a sliding mode, a toothed plate is fixedly connected to one end, close to the pull rod, of the sliding rod, the toothed plate is meshed with the teeth, a spring is fixedly connected to the side wall, far, and the spring is sleeved on the sliding rod, and the rod wall of the pull rod, which is close to one side of the tooth, is fixedly provided with scale marks along the vertical direction.

Preferably, a sliding groove is formed in the rod wall, away from the teeth, of the pull rod, a sliding block is connected in the sliding groove in a sliding mode, and one end, away from the bottom of the sliding groove, of the sliding block penetrates through a groove opening of the sliding groove and extends outwards and is fixedly connected with the inner hole wall of the limiting hole.

Preferably, a ball groove is formed in one end, close to the bottom of the sliding groove, of the sliding block, a ball is connected in the ball groove in a rolling mode, and one end, far away from the bottom of the ball groove, of the ball penetrates through a notch of the ball groove and extends outwards and is connected with the bottom of the sliding groove in a rolling mode.

Preferably, the upper end of the pull rod is fixedly connected with a pull handle.

Preferably, the outer cylinder wall of the needle cylinder is fixedly provided with anti-skid grains.

Preferably, an annular sealing groove with an annular section is formed in the annular side wall of the plunger, a sealing gasket with an annular section is fixedly arranged in the sealing groove, and one end, far away from the bottom of the sealing groove, of the sealing gasket penetrates through a notch of the sealing groove and extends outwards and is in sealing sliding connection with the inner cylinder wall of the needle cylinder.

Compared with the prior art, the utility model provides a pharmacy is syringe that accurate pushes away material for experiment possesses following beneficial effect:

this syringe that accurate material was pushed for pharmacy experiments, through setting up the limiting plate, spacing hole, the plunger, the pull rod, tooth, the slide cartridge, the slide opening, the slide bar, pinion rack and spring, when the syringe used, push down the plunger, make the plunger support at the bottom of the inner tube with the cylinder, and the pulling plunger draws the syringe to full, when needing to adjust syringe injection dosage, apply a compression spring's pulling force to the slide bar, and then make the pinion rack break away from tooth, and then make the slide cartridge can slide on the pull rod, and then adjust the position of slide cartridge on the pull rod, slide cartridge to suitable position is adjusted to the scale mark on the cooperation pull rod, and then suitable liquid is ejected in that can be accurate.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can be accurate push away the material and go out appointed volume of liquid.

Drawings

Fig. 1 is a schematic structural diagram of an injector for accurately pushing materials for pharmaceutical experiments according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the other side of the connection between the syringe sliding barrel and the pull rod for accurate pushing material in pharmaceutical experiments;

fig. 4 is an enlarged view of a portion B in fig. 1.

In the figure: 1 syringe, 2 syringe needles, 3 limit plates, 4 limit holes, 5 plungers, 6 pull rods, 7 teeth, 8 sliding cylinders, 9 sliding holes, 10 sliding rods, 11 toothed plates, 12 springs, 13 sliding chutes, 14 sliding blocks, 15 ball grooves, 16 balls, 17 sealing grooves and 18 sealing gaskets.

Detailed Description

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

Referring to fig. 1-4, an injector for accurately pushing materials for pharmaceutical experiments comprises a needle cylinder 1 and a needle head 2 fixedly connected to the bottom of the needle cylinder 1, the top of the needle cylinder 1 is fixedly connected with a limit plate 3, the middle of the limit plate 3 is provided with a limit hole 4, a plunger 5 is arranged in the needle cylinder 1, the middle of the side wall of the top of the plunger 5 is fixedly connected with a pull rod 6, the upper end of the pull rod 6 passes through the limit hole 4 and extends upwards, one side rod wall of the pull rod 6 is fixedly connected with a row of teeth 7 along the vertical direction, the pull rod 6 positioned right above the limit plate 3 is sleeved with a sliding cylinder 8, the wall of the sliding cylinder 8 close to the teeth 7 is provided with a sliding hole 9, the sliding hole 9 is connected with a sliding rod 10 in a sliding manner, one end of the sliding rod 10 close to the pull rod 6 is fixedly connected with a toothed plate 11, the toothed plate 11 is meshed with the teeth 7, the side wall of, and the spring 12 is sleeved on the sliding rod 10, the rod wall of the pull rod 6, which is close to one side of the teeth 7, is fixedly provided with scale marks along the vertical direction, when the injector is used, the plunger 5 is pushed downwards, so that the plunger 5 is abutted against the bottom of the inner cylinder of the needle cylinder 1, and the plunger 5 is pulled to fully draw the injector, when the injection dosage of the injector needs to be adjusted, the sliding rod 10 is applied with the pulling force of the compression spring 12, and then the toothed plate 11 is separated from the teeth 7, so that the sliding cylinder 8 can slide on the pull rod 6, and further the position of the sliding cylinder 8 on the pull rod 5 is adjusted, and the sliding cylinder 8 is adjusted to a proper position by matching with the scale marks on the pull rod 6, so that proper.

The pull rod 6 is far away from and has been seted up spout 13 on the pole wall of tooth 7, and sliding connection has slider 14 in the spout 13, and the one end that the spout 13 tank bottom was kept away from to slider 14 passes the notch of spout 13 and outwards extends, and with the interior pore wall fixed connection of spacing hole 4, prevents that the pull rod 6 from breaking away from the condition emergence of spacing hole 4.

The ball groove 15 has been seted up to the one end that slider 14 is close to spout 13 tank bottom, and ball 16 is connected with in the ball groove 15 roll, and ball 16 is kept away from the one end of ball groove 15 tank bottom and is passed ball groove 15 notch and outwards extend, and with the tank bottom roll connection of spout 13, make the more swift of slider 14 motion.

The upper end of the pull rod 6 is fixedly connected with a pull handle, so that the slide block 14 can be pulled conveniently.

The outer cylinder wall of the syringe 1 is fixedly provided with anti-skid grains, so that the syringe 1 is connected more firmly.

The annular side wall of the plunger 5 is provided with an annular sealing groove 17 with an annular section, a sealing gasket 18 with an annular section is fixedly arranged in the sealing groove 17, one end, far away from the bottom of the sealing groove 17, of the sealing gasket 18 penetrates through the notch of the sealing groove 17 and extends outwards, and the sealing gasket is connected with the inner cylinder wall of the needle cylinder 1 in a sealing and sliding mode, and therefore the sealing effect of the plunger 5 is improved.

The utility model discloses in, during the syringe uses, push down plunger 5, make plunger 5 and cylinder 1's inner tube bottom to support mutually, and pulling plunger 5 draws the syringe to full, when needing to adjust syringe injection dose, exert a compression spring 12's pulling force to slide bar 10, and then make pinion rack 11 break away from tooth 7, and then make slide cartridge 8 can slide on pull rod 6, and then adjust the position of slide cartridge 8 on pull rod 5, slide cartridge 8 to suitable position is adjusted to the scale mark on the cooperation pull rod 6, and then suitable liquid is gone out in injection that can be accurate.

Above, 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 design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. An injector for accurately pushing materials for pharmaceutical experiments comprises a needle cylinder (1) and a needle head (2) fixedly connected to the bottom of the needle cylinder (1), and is characterized in that a limiting plate (3) is fixedly connected to the top of the needle cylinder (1), a limiting hole (4) is formed in the middle of the limiting plate (3), a plunger (5) is arranged in the needle cylinder (1), a pull rod (6) is fixedly connected to the middle of the side wall of the top of the plunger (5), the upper end of the pull rod (6) penetrates through the limiting hole (4) and extends upwards, a row of teeth (7) is fixedly connected to the side wall of one side of the pull rod (6) along the vertical direction, a sliding cylinder (8) is sleeved on the pull rod (6) located right above the limiting plate (3), a sliding hole (9) is formed in the wall, close to the teeth (7), and a sliding rod (10) is connected to the sliding hole (9) in, the slide bar (10) is close to one end fixedly connected with pinion rack (11) of pull rod (6), pinion rack (11) meshes with tooth (7) mutually, fixedly connected with spring (12) on pinion rack (11) keep away from the lateral wall of tooth (7), the other end of spring (12) and the inner tube wall fixed connection of slide cartridge (8), and spring (12) cover is established on slide bar (10), pull rod (6) are close to on the rod wall of tooth (7) one side along vertical direction fixed scale mark that is equipped with.

2. The syringe capable of accurately pushing materials for pharmaceutical experiments according to claim 1, wherein a sliding groove (13) is formed in the rod wall of the pull rod (6) far away from the teeth (7), a sliding block (14) is connected in the sliding groove (13) in a sliding manner, and one end, far away from the bottom of the sliding groove (13), of the sliding block (14) penetrates through the notch of the sliding groove (13) and extends outwards, and is fixedly connected with the inner hole wall of the limiting hole (4).

3. The syringe with accurate pushing material for the pharmaceutical experiment as claimed in claim 2, wherein the end of the slide block (14) close to the bottom of the sliding chute (13) is provided with a ball groove (15), a ball (16) is connected in the ball groove (15) in a rolling way, and the end of the ball (16) far away from the bottom of the ball groove (15) passes through the notch of the ball groove (15) and extends outwards and is connected with the bottom of the sliding chute (13) in a rolling way.

4. The syringe with accurate pushing material for the pharmaceutical experiment as claimed in claim 1, wherein the upper end of the pull rod (6) is fixedly connected with a pull handle.

5. The syringe with accurate pushing material for the pharmaceutical experiment as claimed in claim 1, wherein the outer cylinder wall of the syringe (1) is fixedly provided with anti-slip lines.

6. The syringe capable of accurately pushing materials for pharmaceutical experiments according to claim 1, wherein a sealing groove (17) with an annular cross section is formed in the annular side wall of the plunger (5), a sealing gasket (18) with an annular cross section is fixedly arranged in the sealing groove (17), and one end of the sealing gasket (18) far away from the bottom of the sealing groove (17) penetrates through the notch of the sealing groove (17) and extends outwards, and is in sealing sliding connection with the inner cylinder wall of the syringe (1).