CN221905129U - First aid syringe - Google Patents

Abstract

The present application proposes an emergency syringe, which includes: a frame body, a piston rod, a needle, a cartridge rack, and a cartridge. The emergency syringe of the present application retains the operation mode of the traditional syringe as much as possible, and contains the liquid medicine in the cartridge, but the liquid medicine does not need to be extracted from the cartridge. Instead, the plug of the cartridge is cleverly designed as a piston head, so that the preparation steps of extracting medicine and exhausting air are not required; and the connection problem between the cartridge and the needle is solved by using a needle with sharp points at both the top and the bottom; it only needs to install the cartridges containing different liquid medicines into different installation cylinders in the cartridge rack, and the cartridges under the piston rod can be switched by rotating the cartridge rack, so that the combined application of drugs in emergency situations can be conveniently realized.

Description

First aid syringe

Technical Field

The present application relates to a medical device, and in particular to an emergency syringe.

Background Art

At present, when using emergency medicines at the battlefield, it is necessary to break open the ampoule of emergency medicine, open the syringe to aspirate, and then expel the gas in the syringe before injecting it into the patient's body through the muscle. Breaking open the ampoule, opening the syringe, and extracting the emergency medicine from the ampoule will consume precious on-site rescue time.

Moreover, multiple drugs are often required in the first aid process, so the above preparation steps may need to be repeated many times. However, in the harsh conditions at the battlefield, the time for first aid is urgent, and a late injection may cause the wounded to miss the best time for treatment.

CN 213994466 U proposes a "prefilled emergency syringe for use in an ambulance", which solves the problem of time-consuming on-site preparation steps by prefilling the syringe with liquid medicine. However, the limitation of this prefilled syringe is that it cannot be prefilled with multiple liquid medicines and is not suitable for occasions where drugs are used in combination.

CN 201625271 U proposes a "cardiac arrest emergency triple drug syringe", which connects multiple drug capsules in a three-way manner to achieve continuous use of drugs. However, this special-shaped syringe abandons the piston push structure of the traditional syringe, which does not conform to the long-term usage habits of medical staff; moreover, it is not easy to accurately grasp the dosage of the drug by squeezing the drug in the drug capsule; there is another problem, that is, the three liquid capsules are actually connected, which will cause the pressurized amount to not necessarily be reflected in the output of the needle, and part of the drug liquid may be squeezed into other drug capsules, resulting in inaccurate medication.

Utility Model Content

In view of the above problems, the present application aims to propose an emergency syringe, which can shorten the preparation time compared with the traditional syringe, and can realize the combined use of multiple drugs while retaining the injection operation habits of the traditional syringe.

The emergency syringe of the present application comprises: a frame body, a piston rod, a needle, a cartridge rack, and a cartridge;

The frame body comprises a left column and a right column; the upper ends of the left column and the right column are fixedly connected together through a top plate; the lower ends of the left column and the right column are fixedly connected together through a bottom plate; the right column is formed into a cylindrical body; a first through hole is opened in the middle of the top plate; a second through hole is opened in the middle of the bottom plate; a first mounting tube is formed extending downwardly from the lower side of the bottom plate; the first mounting tube is formed around the second through hole;

The lower end of the piston rod forms a disc-shaped lower head; the upper end of the piston rod forms a disc-shaped upper head;

The needle head comprises a steel needle body, the lower end and the upper end of the steel needle body are both formed into a pointed end; a boss is fixedly formed in the middle of the steel needle body, and a second mounting cylinder is formed on the upper side of the boss extending upward;

The cartridge rack includes a plurality of mounting cartridges; the plurality of mounting cartridges are connected together by a connecting block, a third through hole is formed at the center of the connecting block; the plurality of mounting cartridges are distributed around the third through hole;

The drug cartridge contains liquid medicine; the upper end of the drug cartridge is open, and the lower end is closed by a cover plate; a piston head is slidably mounted in the upper end opening of the drug cartridge; a fourth through hole is formed in the center of the cover plate; a closing film is covered on the lower side of the cover plate to close the fourth through hole; the drug cartridge can be detachably inserted into and retained in the mounting cylinder;

The piston rod can be slidably installed in the first through hole; the cartridge holder can be rotatably installed on the right column through the third through hole; the lower head of the piston rod is used to abut against the piston head of the cartridge in the mounting cylinder between the left column and the right column to push the piston head to move downward and squeeze the liquid medicine contained in the cartridge downward; the needle is sleeved on the outer periphery of the first mounting cylinder of the frame through the second mounting cylinder, thereby fixing the needle to the lower end of the frame body; the upper end of the steel needle body of the needle extends upward through the first mounting cylinder and the second through hole, and then pierces the closing membrane of the cartridge in the mounting cylinder between the left column and the right column and enters the fourth through hole.

Preferably, the first mounting tube and the second mounting tube are coupled together by threads.

Preferably, the cartridge rack comprises three mounting barrels; the cartridges mounted in the three mounting barrels contain different liquid medicines.

The emergency syringe of the present application retains the operation mode of the traditional syringe as much as possible, and the drug liquid is contained in the cartridge, but the drug liquid does not need to be extracted from the cartridge. Instead, the plug of the cartridge is cleverly designed as a piston head, so that the preparation steps of extracting the drug and venting are not required; and the connection problem between the cartridge and the needle is solved by using a needle with sharp points at both the top and the bottom; it is only necessary to install cartridges containing different drug liquids into different installation cylinders in the cartridge rack, and switch the cartridges under the piston rod by rotating the cartridge rack, so as to conveniently realize the combined application of drugs in emergency situations.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of the emergency syringe of the present application;

FIG2 is a schematic diagram of the front view of the emergency syringe of FIG1 after the piston rod and the cartridge holder are lifted;

FIG3 is a schematic diagram of the front view of the emergency syringe of FIG1 when performing an injection;

FIG4 is a schematic diagram of the front structural view of the frame body of the emergency syringe in FIG1 ;

5 and 6 are schematic diagrams of the three-dimensional structure of the frame body of FIG. 4 ;

FIG7 is a schematic diagram of the three-dimensional structure of the liquid medicine cartridge of the emergency syringe of FIG1 ;

FIG8 is a schematic cross-sectional view of the medicine cartridge of FIG7 ;

FIG9 is a schematic diagram of the three-dimensional structure of the needle of the emergency syringe in FIG1 ;

FIG. 10 is a schematic diagram of the three-dimensional structure of the cartridge holder of the emergency syringe of FIG. 1 .

DETAILED DESCRIPTION

Below, the first aid syringe of the present application is described in detail with reference to the accompanying drawings.

The emergency syringe of the present application comprises: a frame body 10 , a piston rod 20 , a needle 30 , a cartridge rack 40 , and a cartridge 50 .

The frame body 10 includes a left column 12 and a right column 13; the upper ends of the left column 12 and the right column 13 are fixedly connected together through a top plate 11; the lower ends of the left column 12 and the right column 13 are fixedly connected together through a bottom plate 14. The right column 13 is formed as a cylinder; a first through hole 11a is opened in the middle of the top plate 11; a second through hole 14b is opened in the middle of the bottom plate 14; a first installation tube 14a is formed on the lower side of the bottom plate 14 to extend downward; the first installation tube 14 is formed around the second through hole 14b.

The lower end of the piston rod 20 forms a disc-shaped lower top head; the upper end of the piston rod 20 forms a disc-shaped upper top head; it should be pointed out here that the lower top head is not the piston head, but a mechanism for driving the piston head.

The needle head 30 comprises a steel needle body, the lower end 32 and the upper end 31 of the steel needle body are both formed into pointed ends; a boss is fixedly formed in the middle of the steel needle body, and a second mounting cylinder 31 is formed on the upper side of the boss extending upward.

The cartridge rack 40 includes a plurality of mounting cartridges 41 ; the plurality of mounting cartridges 41 are connected together by a connecting block 42 , a third through hole 43 is formed at the center of the connecting block 42 ; the plurality of mounting cartridges 41 are distributed around the third through hole 43 .

The cartridge 50 contains liquid medicine; the upper end of the cartridge 50 is open, and the lower end is closed by the cover plate; a piston head 52 is slidably mounted in the upper end opening of the cartridge 50; a fourth through hole 53 is formed in the center of the cover plate; a closing film 54 (which may be a plastic film or a silicone film) is covered on the lower side of the cover plate to close the fourth through hole 53; the cartridge 50 can be detachably inserted and retained in the mounting cylinder 41. The outer surface of the peripheral wall 51 of the cartridge 50 is preferably formed relatively smooth. The cartridge 50 is preferably formed as a cylinder. The shape of the mounting cylinder 41 corresponds to the shape of the cartridge 50.

The installation relationship of each component is as follows.

The piston rod 20 can be slidably mounted in the first through hole 11a; the cartridge holder 40 can be rotatably mounted on the right column 13 through the third through hole 43; the lower head of the piston rod 20 is used to abut against the piston head 52 of the cartridge 50 in the mounting cylinder 41 between the left column 12 and the right column 13, so as to push the piston head 52 to move downward and squeeze the liquid medicine contained in the cartridge 50 downward; the needle 30 is sleeved on the outer periphery of the first mounting cylinder 14a of the frame 10 through the second mounting cylinder 31, for example, by a threaded manner or a plug-in manner, thereby fixing the needle 30 to the lower end of the frame body 10. In the threaded manner, the outer peripheral surface of the first mounting cylinder 14a is formed with an external thread, and the second mounting cylinder 31 sleeve is correspondingly formed with an internal thread. The upper end 33 of the steel needle body of the needle 30 extends upward through the first mounting cylinder 14a and the second through hole 14b, then pierces the closing membrane 54 of the cartridge 50 in the mounting cylinder 41 between the left column 12 and the right column 13, and then enters the fourth through hole 53. The upper end 33 of the steel needle body of the needle 30 preferably does not exceed the upper surface of the cover plate, so that when the piston head 52 of the cartridge 50 slides to the bottom of the cartridge and contacts the cover plate, the needle will not pierce the piston head 52.

The cartridge rack 40 includes three mounting barrels 41 ; the cartridges 50 mounted in the three mounting barrels 41 contain different liquid medicines to facilitate the combined use of medicines during emergency treatment.

When in use, the cartridge is pre-installed on the cartridge rack; for easy identification, cartridges of different drugs can be marked with different colors or labels; the cartridge rack can be pulled up and rotated around the right column, so that the cartridge can be easily inserted. After the cartridge is installed, the needle is installed; of course, the needle can also be installed on site. During on-site first aid, the cartridge rack is rotated, the required cartridge is transferred to the piston rod, and the piston rod is pushed to press the piston head of the cartridge. The upper end of the needle pierces the closed membrane and communicates with the cartridge. The cartridge now corresponds to the barrel of a conventional syringe, and its piston head corresponds to the piston head of a conventional syringe; the piston rod pushes the piston head, and the liquid medicine is squeezed out from the lower end of the needle. If the liquid medicine needs to be replaced, pull up the piston rod and rotate the cartridge rack. Even in the process of changing the cartridge, there is no need to pull out the needle from the patient's muscle, which further reduces the injection preparation time for combined drug use.

Claims (3)

1. An emergency syringe, characterized by comprising: a frame body, a piston rod, a needle, a cartridge holder, and a cartridge; The frame body comprises a left column and a right column; the upper ends of the left column and the right column are fixedly connected together through a top plate; the lower ends of the left column and the right column are fixedly connected together through a bottom plate; the right column is formed into a cylindrical body; a first through hole is opened in the middle of the top plate; a second through hole is opened in the middle of the bottom plate; a first mounting tube is formed extending downwardly from the lower side of the bottom plate; the first mounting tube is formed around the second through hole; The lower end of the piston rod forms a disc-shaped lower head; the upper end of the piston rod forms a disc-shaped upper head; The needle head comprises a steel needle body, the lower end and the upper end of the steel needle body are both formed into a pointed end; a boss is fixedly formed in the middle of the steel needle body, and a second mounting cylinder is formed on the upper side of the boss extending upward; The cartridge rack includes a plurality of mounting cartridges; the plurality of mounting cartridges are connected together by a connecting block, a third through hole is formed at the center of the connecting block; the plurality of mounting cartridges are distributed around the third through hole; The drug cartridge contains liquid medicine; the upper end of the drug cartridge is open, and the lower end is closed by a cover plate; a piston head is slidably mounted in the upper end opening of the drug cartridge; a fourth through hole is formed in the center of the cover plate; a closing film is covered on the lower side of the cover plate to close the fourth through hole; the drug cartridge can be detachably inserted into and retained in the mounting cylinder; The piston rod can be slidably installed in the first through hole; the cartridge holder can be rotatably installed on the right column through the third through hole; the lower head of the piston rod is used to abut against the piston head of the cartridge in the mounting cylinder between the left column and the right column to push the piston head to move downward and squeeze the liquid medicine contained in the cartridge downward; the needle is sleeved on the outer periphery of the first mounting cylinder of the frame through the second mounting cylinder, thereby fixing the needle to the lower end of the frame body; the upper end of the steel needle body of the needle extends upward through the first mounting cylinder and the second through hole, and then pierces the closing membrane of the cartridge in the mounting cylinder between the left column and the right column and enters the fourth through hole. 2. The emergency syringe according to claim 1, characterized in that: The first mounting tube and the second mounting tube are connected by threads. 3. The emergency syringe according to claim 1, characterized in that: The cartridge rack comprises three mounting barrels; the cartridges mounted in the three mounting barrels contain different liquid medicines.