CN220588692U

CN220588692U - Precise filtering injector

Info

Publication number: CN220588692U
Application number: CN202321732813.0U
Authority: CN
Inventors: 莫海罡; 杨玲
Original assignee: Hunan Luzhou Huikang Development Co ltd
Current assignee: Hunan Luzhou Huikang Development Co ltd
Priority date: 2023-07-04
Filing date: 2023-07-04
Publication date: 2024-03-15
Anticipated expiration: 2033-07-04

Abstract

The utility model relates to a precise filtering injector, which comprises a needle tube, wherein the inner wall of the needle tube is connected with a piston head in a sliding way, the top of the piston head is connected with a threaded rod in a rotating way, the outer wall of the threaded rod is connected with a nut in a threaded way, the outer wall of the needle tube is fixedly connected with a limiting plate, and the inner wall of the limiting plate is connected with an inserting block in a sliding way. The utility model has the advantages that when the injector is needed to be used for injecting liquid into a patient, the threaded rod is rotated to move into the needle tube to drive the piston head to move, the speed of the movement of the threaded rod is very slow due to the threaded connection of the threaded rod and the nut, the medical staff is helped to grasp the dosage and the accuracy of the liquid injection, when the piston head needs to be rapidly moved, for example, medicine is extracted from an ampoule bottle, the sliding shaft is moved, the plug is moved to drive the fixture block to move, the fixture block is moved out of the clamping groove, after the limit of the fixture block is lost, the nut can be taken down from the limit plate, the threaded rod can be rapidly pulled at the moment, and the piston head is driven to rapidly move in the needle tube.

Description

Precise filtering injector

Technical Field

The utility model relates to the technical field of syringes, in particular to a precise filtering syringe.

Background

The syringe generally comprises a syringe, a piston and a push rod, wherein the front end of the syringe is provided with a needle seat, the needle seat is used for being inserted with an injection needle, the piston is arranged in the syringe, the front end of the push rod is connected with the piston, and the piston can be driven to move back and forth in the syringe through the push rod.

Through retrieving, chinese patent discloses a precision filtration syringe (grant bulletin number CN 208958992U), this patent technique includes the barrel, locate the push rod in the barrel, and locate the piston of the front end of push rod, the bottom of barrel is equipped with filtering component, filtering component is including locating the filtration epitheca of the bottom of barrel, with the filtration inferior valve of filtration epitheca fixed connection, the elasticity that blocks between filtration epitheca and the filtration inferior valve is located, and set firmly the precision filtration membrane on the filtration inferior valve, the play cistern of laminating is formed at the middle part of elasticity blocking, the middle part of filtration epitheca is equipped with the feed liquor upper hole, be equipped with out liquid lower hole and a plurality of feed liquor lower holes around the liquid lower hole are located to the array on the filtration inferior valve, precision filtration membrane covers out liquid lower hole and is located between a plurality of feed liquor lower holes. According to the utility model, the liquid medicine is not filtered when the liquid medicine is extracted, so that the medicine extracting time can be saved, the liquid medicine is filtered when the liquid medicine is pushed, and impurities in the liquid medicine can be filtered, so that no impurities exist between the liquid outlet hole and the precise filtering membrane, the impurities are prevented from being injected into a patient, and the medication safety is ensured.

However, in the practical application process of the technology, when the injector is used for injecting the medicament in the body of a patient, the push rod is pushed to drive the piston to move, the medicament is injected into the body of the patient, the medicament can be rapidly injected into the body of the patient once the force is excessively large due to the fact that the error is avoided due to manual operation, discomfort of the patient is caused, and the accuracy of the injection dosage is difficult to ensure due to the mode of manually pressing the push rod for injection.

Disclosure of Invention

In view of the above-described problems of the prior art, a primary object of the present utility model is to provide a precision filter syringe.

The technical scheme of the utility model is as follows: the utility model provides a precision filtration syringe, includes the needle tubing, the inner wall sliding connection of needle tubing has the piston head, the top of piston head rotates and is connected with the threaded rod, the outer wall threaded connection of threaded rod has the nut, the outer wall fixedly connected with limiting plate of needle tubing, the inner wall sliding connection of limiting plate has the inserted block, the inside of nut is provided with the slot that the cooperation inserted block used, the outer wall fixedly connected with fixture block of inserted block, the inner wall of slot is provided with the draw-in groove that the cooperation fixture block used, one side fixedly connected with slide shaft of inserted block, the outer wall of slide shaft is provided with the spring.

As a preferred implementation mode, the outer wall of the sliding shaft is fixedly connected with a limiting sliding plate, one end of the sliding shaft is fixedly connected with a button, and the sliding shaft, the limiting sliding plate and the button are all in sliding connection with the limiting plate.

As a preferred embodiment, the outer wall of the clamping block is provided with a slope.

As a preferred implementation mode, the top fixedly connected with of threaded rod presses the board, press the board and be provided with the slipmat with the outer wall of limiting plate.

As a preferred implementation mode, the inner wall of needle tubing and the below fixedly connected with filter plug that is located the piston head, the inner wall of filter plug is provided with first logical groove, the inner wall of filter plug and one side of keeping away from first logical groove are provided with the second logical groove, the inside in first logical groove is provided with first check valve, the inside in second logical groove is provided with the second check valve, the inside of filter plug and the top that is located the second check valve are provided with the filter screen.

As a preferred implementation mode, the outer wall of the needle tube is provided with a glass cover plate, and the bottom of the needle tube is provided with a needle head.

As a preferred embodiment, the outer wall of the needle tube is provided with graduation marks.

Compared with the prior art, the utility model has the advantages and positive effects that:

when the syringe is required to be used for injecting liquid into a patient, the threaded rod is rotated to move into the needle tube to drive the piston head to move, the threaded rod is very slow in moving speed due to the threaded connection of the threaded rod and the nut, medical staff is helped to grasp the dosage and the accuracy of liquid injection, when the piston head is required to be rapidly moved, for example, a medicament is extracted from an ampoule bottle, the sliding shaft is moved, the inserting block is moved to drive the clamping block to move, the clamping block is moved out of the clamping groove, after the limit of the clamping block is lost, the nut can be taken down from the limiting plate, the threaded rod can be rapidly pulled at the moment, the piston head is driven to rapidly move in the needle tube, and the operation quality and the use efficiency are greatly improved compared with the traditional device.

Drawings

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

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of the utility model at A;

fig. 4 is an enlarged view of the utility model at B.

Legend description: 1. a needle tube; 2. a piston head; 3. a threaded rod; 4. a limiting plate; 5. a nut; 6. inserting blocks; 7. a slot; 8. a clamping block; 9. a clamping groove; 10. a slide shaft; 11. a spring; 12. a limit sliding plate; 13. a button; 14. a filter plug; 15. a first through groove; 16. a first one-way valve; 17. a second through slot; 18. a second one-way valve; 19. a filter screen; 20. pressing the plate; 21. an anti-slip pad; 22. a needle; 23. a glass cover plate; 24. graduation marks.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.

The utility model will be further described with reference to the drawings and specific examples.

Example 1

As shown in fig. 1 to 4, the present utility model provides a technical solution: the utility model provides a precision filtration syringe, including needle tubing 1, the inner wall sliding connection of needle tubing 1 has piston head 2, the top of piston head 2 rotates and is connected with threaded rod 3, threaded rod 3's outer wall threaded connection has nut 5, needle tubing 1's outer wall fixedly connected with limiting plate 4, limiting plate 4's inner wall sliding connection has inserted block 6, nut 5's inside is provided with the slot 7 that cooperation inserted block 6 used, inserted block 6's outer wall fixedly connected with fixture block 8, inserted block 7's inner wall is provided with the draw-in groove 9 that cooperation fixture block 8 used, one side fixedly connected with slide 10 of inserted block 6, slide 10's outer wall is provided with spring 11.

In this embodiment, when the syringe is required to be used to inject liquid into a patient, the threaded rod 3 is rotated, so that the threaded rod 3 moves into the needle tube 1, the piston head 2 is driven to move, the threaded rod 3 moves very slowly due to the threaded connection of the threaded rod 3 and the nut 5, the medical staff is helped to grasp the dosage and the accuracy of liquid injection, when the piston head 2 needs to be rapidly moved, for example, a medicament is extracted from an ampoule bottle, the sliding shaft 10 is moved, the insert block 6 is caused to move, the clamping block 8 is driven to move, the clamping block 8 is caused to move out of the clamping groove 9, after the limit of the clamping block 8 is lost, the nut 5 can be taken down from the limiting plate 4, at the moment, the threaded rod 3 can be rapidly pulled, and the piston head 2 is driven to rapidly move in the needle tube 1.

Example 2

As shown in fig. 1-4, the outer wall of the sliding shaft 10 is fixedly connected with a limit sliding plate 12, one end of the sliding shaft 10 is fixedly connected with a button 13, and the sliding shaft 10, the limit sliding plate 12 and the button 13 are all in sliding connection with the limit plate 4; the outer wall of the clamping block 8 is provided with an inclined plane; the top of the threaded rod 3 is fixedly connected with a pressing plate 20, and anti-slip pads 21 are arranged on the outer walls of the pressing plate 20 and the limiting plate 4; the inner wall of the needle tube 1 and the lower part of the piston head 2 are fixedly connected with a filter plug 14, a first through groove 15 is formed in the inner wall of the filter plug 14, a second through groove 17 is formed in the inner wall of the filter plug 14 and at one side far away from the first through groove 15, a first one-way valve 16 is arranged in the first through groove 15, a second one-way valve 18 is arranged in the second through groove 17, and a filter screen 19 is arranged in the filter plug 14 and above the second one-way valve 18; the outer wall of the needle tube 1 is provided with a glass cover plate 23, and the bottom of the needle tube 1 is provided with a needle head 22; the outer wall of the needle tube 1 is provided with graduation marks 24.

In this embodiment, through setting up slipmat 21, medical personnel are difficult for sliding when holding the syringe, press button 13, can drive slide shaft 10 and remove, hold down spring 11, when needs slowly inject, insert in slot 7 with inserted block 6, fixture block 8 gets into draw-in groove 9 under the effect of spring 11, make nut 5 and limiting plate 4 firm in connection, can follow the ampoule in-extracting medicament through syringe needle 22, the medicament passes through in the first check valve 16 and upwards circulate, when extruding the medicament, the medicament passes through downwards circulation in the second check valve 18, can filter the medicament through the filter screen 19 of setting, prevent that the broken bits that carry in the medicament from being injected into the patient.

Working principle:

as shown in fig. 1-4, when the injector is needed to be used for injecting liquid into a patient, the threaded rod 3 is rotated, so that the threaded rod 3 moves into the needle tube 1 to drive the piston head 2 to move, because the threaded rod 3 is in threaded connection with the nut 5, the moving speed of the threaded rod 3 is very slow, the medical staff is helped to grasp the dosage and the accuracy of the injected liquid, when the piston head 2 needs to be rapidly moved, for example, medicine is extracted from an ampoule bottle, the needle head 22 is inserted into the ampoule bottle, the button 13 is pressed, the sliding shaft 10 is driven to move, the inserting block 6 is driven to move, the clamping block 8 is driven to move out of the clamping groove 9, after the limit of the clamping block 8 is lost, the nut 5 can be taken down from the limiting plate 4, at the moment, the threaded rod 3 can be rapidly pulled, the piston head 2 is driven to rapidly move in the needle tube 1, the medicine passes through the first one-way valve 16 and upwards flows, when the medicine is extruded out from the second one-way valve 18, the medicine can be filtered through the set filter screen 19, the medicine is prevented from being injected into the patient, and the crushed slag carried in the medicine is greatly improved in quality and the use efficiency compared with the traditional device.

Finally, it should be noted that: the embodiments described above are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The utility model provides a precision filtration syringe, includes needle tubing (1), its characterized in that: the inner wall sliding connection of needle tubing (1) has piston head (2), the top of piston head (2) rotates and is connected with threaded rod (3), the outer wall threaded connection of threaded rod (3) has nut (5), the outer wall fixedly connected with limiting plate (4) of needle tubing (1), the inner wall sliding connection of limiting plate (4) has inserted block (6), the inside of nut (5) is provided with slot (7) that cooperation inserted block (6) used, the outer wall fixedly connected with fixture block (8) of inserted block (6), the inner wall of slot (7) is provided with draw-in groove (9) that cooperation fixture block (8) used, one side fixedly connected with slide (10) of inserted block (6), the outer wall of slide (10) is provided with spring (11).

2. The precision filtration syringe of claim 1, wherein: the outer wall fixedly connected with limiting slide plate (12) of slide shaft (10), the one end fixedly connected with button (13) of slide shaft (10), limiting slide plate (12), button (13) all with limiting plate (4) sliding connection.

3. The precision filtration syringe of claim 1, wherein: the outer wall of the clamping block (8) is provided with an inclined plane.

4. The precision filtration syringe of claim 1, wherein: the top fixedly connected with of threaded rod (3) presses board (20), press board (20) and limiting plate (4) outer wall all are provided with slipmat (21).

5. The precision filtration syringe of claim 1, wherein: the inner wall of needle tubing (1) and be located below fixedly connected with filter plug (14) of piston head (2), the inner wall of filter plug (14) is provided with first logical groove (15), the inner wall of filter plug (14) and one side of keeping away from first logical groove (15) are provided with second logical groove (17), the inside of first logical groove (15) is provided with first check valve (16), the inside of second logical groove (17) is provided with second check valve (18), the inside of filter plug (14) and the top that is located second check valve (18) are provided with filter screen (19).

6. The precision filtration syringe of claim 1, wherein: the outer wall of the needle tube (1) is provided with a glass cover plate (23), and the bottom of the needle tube (1) is provided with a needle head (22).

7. The precision filtration syringe of claim 1, wherein: the outer wall of the needle tube (1) is provided with scale marks (24).