CN213554479U

CN213554479U - Disposable safe pre-split syringe

Info

Publication number: CN213554479U
Application number: CN202022103786.3U
Authority: CN
Inventors: 谭垂汉; 韩相敏; 赖�志; 杨玉豪; 郭鑫华; 贾济宇; 刘俊伟
Original assignee: Longkuo Suzhou Biological Engineering Co ltd
Current assignee: Longkuo Suzhou Biological Engineering Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-06-29
Anticipated expiration: 2030-09-23

Abstract

The utility model belongs to the technical field of pre-split syringe, a disposable safety pre-split syringe is disclosed, comprising a detachable and matched needle cylinder and a needle head, wherein a movable piston, split liquid medicine and an injection spring are arranged in the needle cylinder and are respectively positioned at two ends of the piston, when the split liquid medicine is stored in the needle cylinder, the injection spring is compressed, and a limiting device is also arranged between the piston and the needle cylinder so as to limit the position of the piston when the injection spring is compressed; the utility model discloses in, but set up the components of a whole that can once only adsorb the components of a whole that can function independently piston of liquid medicine and can promote the piston compression injection spring that carries out automatic injection, insert to animal muscle through the syringe needle in, accomplish the bacterin injection, thereby the loaded down with trivial details operation of on-the-spot extraction bacterin that has significantly reduced, avoid because of the bacterin use the incomplete wasting of resources who causes after unsealing, promote work efficiency, still guarantee simultaneously that whole syringe can only carry out the disposable, in order to avoid appearing the problem that produces cross infection because of the misuse of syringe.

Description

Disposable safe pre-split syringe

Technical Field

The utility model belongs to the technical field of the syringe of preassembleing in advance, concretely relates to disposable syringe of preassembleing in advance safely.

Background

The injector is a common medical appliance, and mainly comprises a needle cylinder, a needle head and a push rod, wherein the needle cylinder stores liquid medicine, the needle head pierces a blood vessel of a patient, and the push rod pushes the liquid medicine into the patient or an animal body, so that the injection is realized.

At present, most of the existing injectors are manually injected, and liquid medicine is temporarily introduced into a needle cylinder during injection, so that the injection operation is troublesome, and the working efficiency is influenced; moreover, most of injectors are disposable, but the existing injectors cannot identify whether the injectors are used or not through straight pipes, so that the danger of repeated use and cross infection exists; especially in the injection process of animal vaccines, is more inconvenient.

Disclosure of Invention

In view of this, in order to solve the deficiencies in the prior art, the present invention provides a disposable safety pre-dispensing injector.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a disposable safe syringe of preassembleing, is including dismantling complex cylinder and syringe needle, just be equipped with mobilizable piston in the cylinder and be located the branch dress liquid medicine and the injection spring at piston both ends respectively, when having stored branch dress liquid medicine in the cylinder, the injection spring is compressed, just still be equipped with stop device between piston and the cylinder to when injecing the injection spring and being compressed the position of piston.

Preferably, the limiting device comprises:

the needle cylinder comprises a needle cylinder wall, a clamping groove and a movable rod, wherein the clamping groove is formed in the needle cylinder wall, the movable rod is positioned on one side of the clamping groove, the movable rod penetrates through the side wall of the needle cylinder, a limiting plug capable of being clamped into the clamping groove is arranged at one end of the movable rod, and the limiting plug is positioned on the outer side of the needle cylinder;

the limiting device comprises a mounting groove arranged on the piston, a limiting pin and a limiting spring, wherein the limiting pin and the limiting spring are arranged in the mounting groove, one end of the limiting pin can be matched with the clamping groove, and the other end of the limiting pin is connected with the limiting spring.

Preferably, the piston includes a first piston block and a second piston block which can be separated from each other, a piston rod is arranged on one side of the first piston block, a piston groove is formed in one side of the second piston block, the piston rod is movably matched in the piston groove, the injection spring is connected with one end of the second piston block, the mounting groove is formed in the second piston block, and the mounting groove is located on one side of the piston groove.

Preferably, a negative pressure cavity is formed in the second piston block, a disposable conducting piece capable of conducting automatically is connected between the negative pressure cavity and the piston groove, and when the separately-packaged liquid medicine is stored in the needle cylinder, the disposable conducting piece is conducted.

Preferably, the disposable conducting piece is a sealing film which is connected between the negative pressure cavity and the piston groove in a sealing mode, a threaded sleeve is embedded into one end, far away from the first piston block, of the second piston block, a puncture needle penetrates through the threaded sleeve in a screwed mode, one end of the puncture needle corresponds to the sealing film and can puncture the sealing film, and the other end of the puncture needle penetrates through the needle cylinder.

Preferably, the pre-split syringe further comprises a sealing sleeve, and one end of the needle cylinder can be detachably fixed with the needle head or the sealing sleeve.

Compared with the prior art, the utility model, following beneficial effect has:

(1) the utility model discloses in, but set up the components of a whole that can once only adsorb the components of a whole that can function independently piston of liquid medicine and can promote the piston to carry out the compression injection spring of autoinjection, make whole syringe can reach the effect of autoinjection from this to alleviateed work load, still guaranteed simultaneously that whole syringe can only carry out disposable, and then improved the security that this syringe used, in order to avoid appearing the problem that produces cross infection because of the misuse of syringe.

(2) Aiming at the split piston, when the split piston adsorbs liquid medicine, negative pressure adsorption is carried out based on the matching of the negative pressure cavity and the piston groove, and a disposable sealing film which can be punctured by the puncture needle is arranged between the negative pressure cavity and the piston groove.

(3) To above-mentioned components of a whole that can function independently piston, it still is equipped with stop device to correspond to inject wherein the position of second piston piece, drive demand when satisfying first piston piece absorption liquid medicine on the one hand, the another side guarantees that the absorbent liquid medicine can effective partial shipment store in the cylinder, still is convenient for realize compression injection spring's start-up simultaneously.

(4) The syringe is correspondingly provided with a sealing sleeve to carry out sealing, subpackaging and storage on the liquid medicine after the liquid medicine is sucked into the syringe, so that the pollution of the subpackaged liquid medicine in the injector is effectively avoided.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

in the figure: the device comprises a needle cylinder-1, a piston-2, a first piston block-21, a piston rod-22, a second piston block-23, a piston groove-24, a negative pressure cavity-25, a threaded sleeve-26, a puncture needle-27, a disposable conducting piece-28, a separately filled medicine-3, an injection spring-4, a limiting device-5, a movable rod-51, a limiting plug-52, a mounting groove-53, a limiting spring-54, a limiting pin-55 and a sealing sleeve-6.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

In the present embodiment, a disposable safety pre-dispensing syringe is provided, and referring to fig. 1 in detail, the syringe includes a syringe 1 and a needle (not shown in the drawings) detachably engaged with each other, and a movable piston 2 is disposed in the syringe 1, and a dispensing drug solution 3 and an injection spring 4 are disposed at two ends of the piston 2, respectively, when the syringe 1 stores the dispensing drug solution 3, the injection spring 4 is compressed, and a position limiting device 5 is further disposed between the piston 2 and the syringe 1 to limit a position of the piston 2 when the injection spring 4 is compressed.

In this embodiment, the limiting device 5 can be adjusted to make the piston 2 in a movable state, and the compressed injection spring 4 rebounds to push the piston 2 to move left, so that the piston 2 pushes the separately-packaged medical fluid 3 on the left side out of the syringe 1, thereby achieving the effect of automatic injection. And can know from the figure, the overall structure of piston 2 all is in cylinder 1, consequently can't manual reset piston 2 after accomplishing automatic injection to effectively realized the disposable of this syringe, guaranteed its safety in utilization, the specially adapted can realize quick quantitative accurate injection for animal injection vaccine.

Example 2

Aiming at the disposable safety pre-dispensing syringe disclosed in the above embodiment 1, only automatic injection of the dispensed medical liquid 3 can be realized, and the storage of the dispensed medical liquid 3 needs to be completed by matching with corresponding professional equipment, so that a medical liquid suction structure capable of realizing the syringe is provided in this embodiment;

in this embodiment, the limiting device 5, as shown in fig. 2 to 3, includes:

the needle cylinder is characterized by comprising a clamping groove formed in the wall of the needle cylinder 1 and a movable rod 51 positioned on one side of the clamping groove, wherein the movable rod 51 penetrates through the side wall of the needle cylinder 1, a limiting plug 52 capable of being clamped into the clamping groove is arranged at one end of the movable rod 51, and the limiting plug 52 is positioned on the outer side of the needle cylinder 1;

the piston comprises a mounting groove 53 arranged on the piston 2, and a limiting pin 55 and a limiting spring 54 arranged in the mounting groove 53, wherein one end of the limiting pin 55 can be matched with the clamping groove, and the other end of the limiting pin is connected with the limiting spring 54.

From this, the principle of adjusting the stopper 5 so that the piston 2 is movable is: the movable rod 51 and the limiting stopper 52 are pressed towards the syringe 1, so that the limiting stopper 52 is clamped into the clamping groove, the limiting pin 55 located in the clamping groove is pushed out, the limiting pin 55 loses the fit with the syringe 1 after being separated from the clamping groove, the corresponding fit limitation between the piston 2 and the syringe 1 is removed, and the piston 2 is in a movable state, so that the automatic injection mentioned in the embodiment 1 is realized.

In the present embodiment, with respect to the piston 2, as shown in fig. 2:

the piston 2 comprises a first piston block 21 and a second piston block 23 which can be separated from each other, a piston rod 22 is arranged on one side of the first piston block 21, a piston groove 24 is formed on one side of the second piston block 23, the piston rod 22 is movably matched in the piston groove 24, the injection spring 4 is connected with one end of the second piston block 23, an installation groove 53 is formed in the second piston block 23, and the installation groove 53 is positioned on one side of the piston groove 24.

Furthermore, a negative pressure cavity 25 is formed in the second piston block 23, and a disposable conducting piece 28 capable of conducting automatically is connected between the negative pressure cavity 25 and the piston groove 24, so that when the subpackaged liquid medicine 3 is stored in the syringe 1, the disposable conducting piece 28 is already conducted.

Preferably, the disposable conducting element 28 is a sealing film hermetically connected between the negative pressure chamber 25 and the piston groove 24, a threaded sleeve 26 is embedded in one end of the second piston block 23 located away from the first piston block 21, a puncture needle 27 is screwed into the threaded sleeve 26, one end of the puncture needle 27 corresponds to the sealing film and can puncture the sealing film, and the other end of the puncture needle 27 penetrates through the syringe 1.

In summary, based on the specific structure of the piston 2, the principle of the single-use inhalation of the sub-packaged medical fluid 3 by the single syringe is as follows:

the left end of the syringe 1 is connected with a liquid medicine storage device (such as a liquid medicine storage bottle), the puncture needle 27 positioned at the right end of the syringe 1 is rotated, at the moment, the puncture needle 27 is in spiral fit with the threaded sleeve 26, so that the puncture needle 27 moves towards the inside of the syringe 1, the puncture needle 27 punctures the disposable conducting piece 28 (a sealing membrane), in this state, the negative pressure cavity 25 is communicated with the piston groove 24, so that a negative pressure state is formed in the piston groove 24, and a negative suction effect is generated on the piston rod 22, so that the piston rod 22 and the first piston block 21 are driven to move rightwards (at this moment, the second piston block 23 is kept still based on the limitation of the limiting device 5), and the purpose of sucking and distributing the liquid medicine 3 into the syringe 1 from the liquid medicine storage device is achieved.

The disposable conducting piece 28 (sealing film) is of a disposable structure and can not be recovered after puncture, so that the whole injector can only suck liquid medicine in sequence, and the disposable use characteristic of the injector is further ensured.

In addition, in this embodiment, the syringe further comprises a sealing sleeve 6, and one end of the syringe 1 is detachably fixed with the needle or the sealing sleeve 6; wherein when syringe 1 is fixed in seal cover 6, effectively realized the sealed storage of split charging liquid medicine 3 in syringe 1 to avoid split charging liquid medicine 3 to be contaminated, and make whole syringe still can transport or deposit after the split charging stores the liquid medicine.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A disposable safety pre-dispensing syringe is characterized in that: including dismantling complex cylinder (1) and syringe needle, just be equipped with mobilizable piston (2) in cylinder (1) and be located branch dress liquid medicine (3) and injection spring (4) at piston (2) both ends respectively, when having branch dress liquid medicine (3) in cylinder (1) internal storage, injection spring (4) are compressed, just still be equipped with stop device (5) between piston (2) and cylinder (1) to when injecing injection spring (4) and being compressed the position of piston (2).

2. A disposable safety pre-dispensing syringe according to claim 1, characterized in that said stop means (5) comprise:

the needle cylinder is characterized by comprising a clamping groove formed in the wall of the needle cylinder (1) and a movable rod (51) located on one side of the clamping groove, wherein the movable rod (51) penetrates through the side wall of the needle cylinder (1), a limiting plug (52) capable of being clamped into the clamping groove is arranged at one end of the movable rod (51), and the limiting plug (52) is located on the outer side of the needle cylinder (1);

the piston is characterized by comprising a mounting groove (53) arranged on the piston (2), and a limiting pin (55) and a limiting spring (54) which are arranged in the mounting groove (53), wherein one end of the limiting pin (55) can be matched with the clamping groove, and the other end of the limiting pin is connected with the limiting spring (54).

3. A disposable safety pre-dispensing syringe according to claim 2, wherein: piston (2) are including first piston piece (21) and second piston piece (23) that can separate each other, one side of first piston piece (21) is equipped with piston rod (22), piston groove (24) have been seted up to one side of second piston piece (23), and piston rod (22) mobilizable cooperation in piston groove (24), injection spring (4) are connected with the one end of second piston piece (23), mounting groove (53) are seted up on second piston piece (23), and mounting groove (53) are located one side of piston groove (24).

4. A disposable safety pre-dispensing syringe according to claim 3, wherein: a negative pressure cavity (25) is formed in the second piston block (23), a disposable conducting piece (28) capable of conducting automatically is connected between the negative pressure cavity (25) and the piston groove (24), and when the needle cylinder (1) stores the subpackaged liquid medicine (3), the disposable conducting piece (28) is conducted.

5. A disposable safety pre-dispensing syringe according to claim 4, wherein: disposable lead-through (28) are the seal membrane of sealing connection between negative pressure chamber (25) and piston groove (24), the one end embedding that lies in keeping away from first piston piece (21) on second piston piece (23) has thread bush (26), it has felting needle (27) to run through in thread bush (26) the spin, the one end and the seal membrane of felting needle (27) correspond to can puncture the seal membrane, and the other end of felting needle (27) runs through syringe (1).

6. A disposable safety pre-dispensing syringe according to any of claims 1 to 5, wherein: the needle cylinder is characterized by further comprising a sealing sleeve (6), and a needle head or the sealing sleeve (6) can be detachably fixed at one end of the needle cylinder (1).