Speed-adjustable slow pushing device for outdoor injection

Abstract

The utility model discloses a speed-adjustable slow pushing device for outdoor injection, and relates to a speed-adjustable slow pushing device for outdoor injection. The intravenous injection device is mainly designed for solving the problem that intravenous injection of a patient is inconvenient in an existing injection mode in the environments such as outdoors, in the patient transfer process and in a post-disaster site at present. A pre-pressing spring is arranged in the energy storage cylinder on the right side of an isolation piston, the left end of the spring abuts against the isolation piston, the right end of the spring abuts against a right end cover of the energy storage cylinder, a first vent hole is formed in the right end cover, the energy storage cylinder on the left side of the isolation piston is a working medium cavity, and working media are arranged in the working medium cavity. A piston and a piston rod are arranged in the working cylinder, the piston divides the working cylinder into a liquid filling cavity and a ventilation cavity, a second ventilation hole is formed in an end cover on the ventilation cavity side of the working cylinder, and the piston rod extends out of an end cover on the liquid filling cavity side of the working cylinder. And a speed regulating valve is connected in series between the working medium cavity of the energy storage cylinder and the liquid filling cavity of the working cylinder through a liquid guide pipe. The intravenous injection device has the advantage of being used for intravenous injection under severe conditions such as outdoors, transportation and after-disaster.

Description

Technical Field

[0001] The utility model relates to a speed-adjustable slow-push device for outdoor injection. Background Art

[0002] At present, when treating patients outdoors, during patient transfer, at post-disaster sites, and even on battlefields, intravenous injections are required in most cases.

[0003] At present, the injection methods are generally gravity infusion, electric infusion, and manual push injection. These injection methods have many shortcomings in the outdoors:

[0004] First, gravity infusion requires hanging the medicine at a high place, which is greatly affected by the rescue scene, such as the injured trapped after the disaster, the bumpy transport ambulance, etc.

[0005] Second, although the electric drip operation control is simple and reliable, the first condition is that there must be a power supply. Power supply is undoubtedly a luxury in outdoor, post-disaster and battlefield conditions;

[0006] Third, although manual injection is efficient and fast, it is limited by human resource allocation, personal physical endurance, and the on-site conditions of the rescued person. Summary of the invention

[0007] The technical problem to be solved by the utility model is to provide an outdoor injection adjustable speed slow push device that can achieve intravenous injection with the help of a large-capacity syringe at an adjustable and stable speed without electricity. It can replace intravenous injection under inconvenient gravity drip conditions at ordinary times, and can also be used for intravenous injection under harsh conditions such as outdoor, transportation, post-disaster, battlefield, etc.

[0008] The purpose of the utility model is achieved as follows: it includes an energy storage cylinder, a working cylinder, a speed regulating valve, a one-way valve, a liquid guide tube, a syringe fixing fixture, etc.;

[0009] An isolation piston is arranged in the energy storage cylinder, and a pre-compression spring is arranged in the energy storage cylinder on the right side of the isolation piston for storing energy. The spring is a metal spring or a gas spring, and the left end of the spring is close to the isolation piston, and the right end of the spring is close to the right end cover of the energy storage cylinder. The right end cover is provided with a first vent hole or a gas filling nozzle. If a metal spring is used, it is a vent hole, and if a gas spring is used, it is a gas filling nozzle; the energy storage cylinder on the left side of the isolation piston is a working medium cavity, and the working medium cavity is filled with working medium.

[0010] A piston and a piston rod are arranged in the working cylinder. The piston divides the inside of the working cylinder into a liquid filling chamber and a ventilation chamber. A second ventilation hole is arranged on the end cover on the ventilation chamber side of the working cylinder. After the piston rod extends from the end cover on the liquid filling chamber side of the working cylinder, it can directly press and push the syringe.

[0011] A speed regulating valve is connected in series between the working medium chamber of the energy storage cylinder and the liquid filling chamber of the working cylinder through a liquid guide pipe.

[0012] Both ends of the speed regulating valve are connected to a one-way valve through a three-way pipe.

[0013] A pressing plate can also be fixed to the right end of the piston rod of the working cylinder to push the syringe through the pressing plate.

[0014] The syringe fixing fixture comprises a V-shaped fixing plate, the top of the pressure plate is installed on the top of one side of the V-shaped fixing plate through an axis, a torsion spring is provided on the axis, and a V-shaped syringe handle slot is provided on the V-shaped fixing plate to facilitate the fixing of large-capacity syringes.

[0015] The V-shaped fixing plate is fixed on the base.

[0016] The advantages of the utility model are: it can achieve intravenous injection with the help of a large-capacity syringe at an adjustable speed without electricity outdoors, and can replace intravenous injection under inconvenient gravity drip conditions, and can be used for intravenous injection under harsh conditions such as outdoors, transportation, after disasters, battlefields, etc. The device is mainly developed for harsh working conditions. When working, it ensures long-term intravenous drip, adjustable and controllable speed, no electricity, simple, clear and reliable operation, can be reused, and can also be designed and processed into a disposable product according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural principle block diagram of the utility model when the syringe is located at the initial working position;

[0018] Figure 2 It is a structural principle block diagram of the utility model when the syringe is located at the working end position;

[0019] Figure 3 It is a structural schematic diagram of the syringe fixing fixture in the utility model. DETAILED DESCRIPTION

[0020] Combine the following Figure 1-3 Further explain the utility model;

[0021] It includes an energy storage cylinder 1, a working cylinder 2, a speed regulating valve 4, a one-way valve 6, a liquid guide tube 3, a syringe fixing fixture 8, etc.;

[0022] The energy storage cylinder is provided with an isolation piston 11, and the energy storage cylinder on the right side of the isolation piston is provided with a pre-compression spring 12 for energy storage. The spring is a metal spring or a gas spring. The left end of the spring is close to the isolation piston, and the right end of the spring is close to the right end cover of the energy storage cylinder. The right end cover is provided with a first vent hole or a gas filling nozzle 13. If a metal spring is used, it is a vent hole, and if a gas spring is used, it is a gas filling nozzle; the energy storage cylinder on the left side of the isolation piston is a working medium chamber 14, and the working medium chamber is filled with working medium;

[0023] The working medium can generally be a mixture of one or more liquids such as water, glycerin, alcohol, and hydraulic oil. According to the use environment and speed regulation range, one or more liquids are reasonably selected and the proportions of each component are adjusted to make it weather-resistant and have a certain viscosity to adapt to the speed regulation range required under various temperature environments.

[0024] A piston and a piston rod 21 are provided in the working cylinder 2. The piston divides the interior of the working cylinder into a liquid filling chamber 22 and a ventilation chamber 23. A second ventilation hole 24 is provided on the end cover on the ventilation chamber side of the working cylinder. After the piston rod extends from the end cover on the liquid filling chamber side of the working cylinder, it can directly push the syringe 9.

[0025] A speed regulating valve 4 is connected in series between the working medium chamber of the energy storage cylinder and the liquid filling chamber of the working cylinder through a liquid guide tube 3. The speed regulating valve can shut off and adjust the flow rate of the working medium, thereby controlling the speed of the syringe push injection to adapt to the injection speed tolerated by the injured person's physique.

[0026] Both ends of the speed regulating valve 4 are connected to a one-way valve 6 through a three-way pipe 5 .

[0027] A pressing plate 7 can also be fixed to the right end of the piston rod of the working cylinder to push the syringe.

[0028] It also includes a syringe fixing clamp 8, which includes a V-shaped fixing plate 81. The top of the pressure plate 82 is installed on the top of one side of the V-shaped fixing plate through an axis. A torsion spring 83 is provided on the axis. A V-shaped syringe handle slot 84 is provided on the V-shaped fixing plate to facilitate the fixing of large-capacity syringes.

[0029] The V-shaped fixing plate is fixed on the base 85 .

[0030] Working process: first, push the pressure plate to drive the piston rod to move right, and the working medium in the liquid filling chamber of the working cylinder quickly opens the one-way valve and enters the working medium chamber of the energy storage cylinder. The working medium contracts and stores energy through the isolation piston and the compression spring. Due to the reverse cut-off effect of the one-way valve, the working medium can only flow into the liquid filling chamber of the working cylinder through the speed regulating valve. At this time, put the syringe with the drug solution into the V-shaped fixing plate of the syringe fixing fixture, that is, the handle of the outer tube of the syringe is stuck in the syringe handle slot of the syringe fixing fixture, and then press the syringe through the pressure plate, and the drug solution in the syringe is input into the vein of the injured person through the hose needle; then adjust the speed regulating valve from stop to slow and from slow to fast, the spring releases energy to push the isolation piston to move, and the isolation piston pushes the working medium from the energy storage cylinder to the working cylinder at a set speed, and the working medium pushes the piston rod to move left, and the piston rod drives the pressure plate fixed at its right end to move left, and the pressure plate gradually approaches and is close to the syringe piston rod, and then drives the syringe piston to move left. At this time, because the outer tube of the syringe is fixed, the drug solution inside the syringe is compressed and enters the human body, completing the fixed-speed infusion.

[0031] The above are only preferred implementations of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An adjustable speed slow push device for outdoor injection, comprising an energy storage cylinder (1) and a working cylinder (2); wherein: The energy storage cylinder is provided with an isolation piston (11), and the energy storage cylinder on the right side of the isolation piston is provided with a preload spring (12) for storing energy, the left end of the preload spring is closely attached to the isolation piston, and the right end of the preload spring is closely attached to the right end cover of the energy storage cylinder, and the right end cover is provided with a first vent hole or a gas filling nozzle (13), and the energy storage cylinder on the left side of the isolation piston is a working medium chamber (14), and the working medium chamber is filled with working medium; A piston and a piston rod (21) are provided in the working cylinder (2); the piston divides the interior of the working cylinder into a liquid filling chamber (22) and a ventilation chamber (23); a second ventilation hole (24) is provided on an end cover on the ventilation chamber side of the working cylinder; and the piston rod extends from the end cover on the liquid filling chamber side of the working cylinder; A speed regulating valve (4) is connected in series between the working medium chamber of the energy storage cylinder and the liquid filling chamber of the working cylinder via a liquid guide tube (3).

2. The adjustable speed slow push device for outdoor injection according to claim 1 is characterized in that: Both ends of the speed regulating valve (4) are connected to a one-way valve (6) through a three-way pipe (5).

3. The adjustable speed slow push device for outdoor injection according to claim 1 or 2, characterized in that: A pressure plate (7) is fixed to the right end of the piston rod of the working cylinder, and the syringe is pushed by the pressure plate.

4. The adjustable speed slow push device for outdoor injection according to claim 1 or 2, characterized in that: It also includes a syringe fixing fixture (8), which includes a V-shaped fixing plate (81). The top of the pressure plate (82) is installed on the top of one side of the V-shaped fixing plate through an axis, and a torsion spring (83) is provided on the axis. The V-shaped fixing plate is provided with a V-shaped syringe handle groove (84) to facilitate the fixing of a large-capacity syringe.

5. The adjustable speed slow push device for outdoor injection according to claim 3 is characterized in that: It also includes a syringe fixing fixture (8), which includes a V-shaped fixing plate (81). The top of the pressure plate (82) is installed on the top of one side of the V-shaped fixing plate through an axis, and a torsion spring (83) is provided on the axis. The V-shaped fixing plate is provided with a V-shaped syringe handle groove (84) to facilitate the fixing of a large-capacity syringe.

6. The adjustable speed slow push device for outdoor injection according to claim 4 is characterized in that: The V-shaped fixing plate is fixed on the base (85).

7. The adjustable speed slow push device for outdoor injection according to claim 5 is characterized in that: The V-shaped fixing plate is fixed on the base (85).

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