CN114129827B - Vertical injection mechanism of needleless injector - Google Patents

Abstract

The invention discloses a vertical injection mechanism of a needleless syringe, which includes a cylinder. An injection push rod is provided in the cylinder. A medicine tube is provided at the other end of the cylinder away from the injection push rod. The other end of the cylinder away from the injection push rod is provided with a medicine tube. There is a fixed ring, and a central seat is installed in the fixed ring. A rotating disk and a circlip are provided on the central seat. The rotating disk is connected to one end of the pulling rope. The other end of the pulling rope is fixed on the central seat. There are multiple equal-height rods at the lower end of the fixed ring. There is also a vertical observation window in the fixed ring. The beneficial effects of the present invention: it overcomes the restriction that conventional needleless syringes cannot inject vertically, guarantees the therapeutic effect during the injection process to the greatest extent, and at the same time eliminates the fear of the injection process by the person being injected, reduces pain, and achieves The comfort during treatment and recovery meets the pursuit of good treatment effects and good wishes by medical staff and patients.

Description

A kind of vertical injection mechanism of needleless syringe

Technical field

The invention relates to the technical field of medical devices, specifically a vertical injection mechanism of a needleless syringe.

Background technique

In addition to its wide application in basic medicine, clinical medicine, forensic medicine, laboratory medicine, preventive medicine, health care medicine, rehabilitation medicine and other fields, the needleless syringe application industry also requires more convenient operation and more efficient practicality for medical workers and patients. , the comfort is more superior, and the research on needle-free injection technology is of great significance to promoting independent innovation, technological progress and industry development in the field of medical engineering. Its importance lies not only in its economic benefits or economic effects, but also in its social benefits.

The conventional needleless syringe mechanism includes an injection push rod installed in the barrel of the needleless syringe. The head of the injection push rod is made of plastic silicone and is fixedly connected to the injection push rod. The needleless injection barrel is connected to a fixed ring and functions to connect the needleless syringe with the needleless syringe. When the needle injection barrel is connected, it is fixed with the medicine tube. The plastic silicone on the head of the injection push rod interferes with the medicine tube. The dose to be injected is identified and selected through the dose observation window, and the injection is pushed under the action of pressure. The plastic silicone on the head of the rod exerts pressure on the medicine tube to deliver the medicine and complete the injection process.

The principle of the conventional needleless syringe mechanism is to use pressure to make the plastic silicone on the head of the injection push rod transport the drug out of the nozzle of the medicine tube, thereby completing the injection process. During the injection process, it is a needleless injection. When the injection tube contacts When it is injected into the human body, the injection angle cannot be controlled, which affects the dose of the injected drug into the subcutaneous tissue and affects the therapeutic effect.

Contents of the invention

The object of the present invention is to provide a vertical injection mechanism of a needle-less syringe to solve the problems raised in the above background art.

In order to achieve the above object, the present invention provides the following technical solution: a vertical injection mechanism of a needleless syringe, including a cylinder, an injection push rod is provided in the cylinder, and an injection push rod is provided at the other end of the cylinder away from the injection push rod. There is a medicine tube, and the other end of the barrel away from the injection push rod is provided with a fixed ring. A central seat is installed in the fixed ring. A rotating disk and a circlip are provided on the central seat. The rotating disk and the One end of the pulling rope is connected, and the other end of the pulling rope is fixed on the center seat. A plurality of equal-height columns are provided at the lower end of the fixed ring, and a vertical observation window is also provided in the fixed ring.

Preferably, one end of the injection push rod close to the medicine tube is provided with plastic silicone.

Preferably, the barrel is provided with an observation window.

Preferably, the rotating disk and the circlip are fixedly mounted on the center seat through a center pin.

Preferably, one end of the pulling rope is fixed to the rotating disk through a pulling rope fixing pin.

Preferably, the other end of the pulling rope goes around the slot of the rotating disk and is fixed on the central seat through the rotating disk fixing pin.

Preferably, a transparent observation plate is provided in the vertical observation window.

Preferably, at least three equal-height columns are symmetrically provided at the lower end of the fixed ring, and the three equal-height columns are fixed in the fixed ring through slots, and the three equal-height columns are all equipped with springs.

beneficial effects

The vertical injection mechanism of the needleless syringe provided by the present invention overcomes the restriction that conventional needleless syringes cannot perform vertical injection, ensures the therapeutic effect during the injection process to the greatest extent, and at the same time eliminates the fear of the injection process by the injected person and reduces the risk of injection. It reduces pain, achieves comfort during treatment and recovery, and meets the medical staff and patients’ pursuit of good therapeutic effects and good wishes.

Description of the drawings

Figure 1 is a cross-sectional schematic diagram and a partial enlarged schematic diagram of the overall structure of the present invention;

Figure 2 is an exploded schematic diagram of the overall structure of the present invention.

Reference signs

20-Injection push rod, 21-cylinder, 22-observation window, 23-fixed ring, 24-transparent observation plate, 25-rotating plate, 26-pulling rope fixed pin, 27-rotating plate fixed pin, 28-plastic silicone , 29-drug tube, 30-contour column, 31-spring, 32-center seat, 33-circlip, 34-pulling rope, 35-center pin.

Detailed ways

The following are specific embodiments of the present invention combined with the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example

As shown in Figure 1-2, a vertical injection mechanism of a needleless syringe includes a cylinder 21. An injection push rod 20 is provided inside the cylinder 21. A medicine tube 29 is provided at the other end of the cylinder 21 away from the injection push rod 20. , the other end of the cylinder 21 away from the injection push rod 20 is provided with a fixed ring 23, and a central seat 32 is installed in the fixed ring 23. The central seat 32 is provided with a rotating disk 25 and a circlip 33, and one end of the rotating disk 25 and the pulling rope 34 Connect, the other end of the pulling rope 34 is fixed on the center seat 32, the lower end of the fixed ring 23 is provided with a plurality of equal height columns 30, and a vertical observation window is also provided in the fixed ring 23.

Preferably, one end of the injection push rod 20 close to the medicine tube 29 is provided with plastic silicone 28 .

Preferably, the barrel 21 is provided with an observation window 22 .

Preferably, the rotating disk 25 and the circlip 33 are fixedly arranged on the center seat 32 through the center pin 35 .

Preferably, one end of the pulling rope 34 is fixed to the rotating disk 25 through the pulling rope fixing pin 26 .

Preferably, the other end of the pulling rope 34 goes around the slot of the rotating disk 25 and is fixed on the center seat 32 through the rotating disk fixing pin 27.

Preferably, a transparent observation plate 24 is provided in the vertical observation window.

Preferably, at least three equal-height columns 30 are symmetrically provided at the lower end of the fixed ring 23 , and the three equal-height columns 30 are fixed in the fixed ring 23 through slots. The three equal-height columns 30 are all equipped with springs 31 .

First, rotate the barrel of the needleless syringe, identify it through the injection dose observation port, and set the dose of the drug to be injected. Due to the force of the spring, the contour column and the fixed ring are in a stretched state. When the bottom of the contour column contacts the injection site, due to The spring exerts pressure on the three equal-height columns. When the spring continues to compress, the equal-height columns move upward and gradually protrude from the center seat, exerting force on the pulling rope. Since one end of the pulling rope has a rotating disk fixing pin fixed to the center seat, and the other end has a The fixing pin of the pulling rope is fixed on the rotating disk, and the center pin fixes the rotating disk and the circlip on the center seat. At this time, the entire pulling rope is in the slot of the center seat. When the contour column continues to move upward, the pulling rope is exerted The traction rope exerts a pulling force on one end fixed to the fixed pin of the traction rope, and the rotating disk moves counterclockwise with the center pin as the axis. As the spring continues to compress, the equal height columns continue to move upward until the three equal height columns simultaneously When it reaches the limit height, it stops moving. At the same time, the pulling rope stops exerting pulling force on the rotating disk, and the rotating disk stops moving. At this time, the transparent observation panel set on the fixed ring shows that the rotating disk is in a vertical state when it is green, and then the injection is pushed The rod exerts pressure, and the needleless syringe barrel completes the entire injection process, injecting the drug from the nozzle of the drug tube into the subcutaneous tissue.

Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the invention content within the protection scope of the present invention.

Claims (8)

1. A vertical injection mechanism of a needleless syringe, including a cylinder (21), characterized in that: an injection push rod (20) is provided inside the cylinder (21), and the cylinder (21) is away from the The other end of the injection push rod (20) is provided with a medicine tube (29), and the other end of the barrel (21) away from the injection push rod (20) is provided with a fixed ring (23). The fixed ring (23) ) is installed with a center seat (32). The center seat (32) is provided with a rotating disk (25) and a circlip (33). The rotating disk (25) is connected to one end of the pulling rope (34). The other end of the pulling rope (34) is fixed on the center seat (32). At least three equal-height columns (30) are provided at the lower end of the fixed ring (23). There is also a vertical observation column in the fixed ring (23). window. 2. The vertical injection mechanism of a needleless syringe according to claim 1, characterized in that: one end of the injection push rod (20) close to the medicine tube (29) is provided with plastic silicone (28). 3. The vertical injection mechanism of a needleless syringe according to claim 1, characterized in that: the barrel (21) is provided with an observation window (22). 4. The vertical injection mechanism of a needleless syringe according to claim 1, characterized in that: the rotating disk (25) and the circlip (33) are fixedly arranged on the center seat (35) through a center pin (35). 32) on. 5. The vertical injection mechanism of a needleless syringe according to claim 1, characterized in that one end of the pulling rope (34) is fixed to the rotating disk (25) through a pulling rope fixing pin (26). 6. The vertical injection mechanism of the needleless syringe according to claim 1, characterized in that: the other end of the pulling rope (34) bypasses the slot of the rotating disk (25), and is fixed by the rotating disk. (27) is fixed on the center seat (32). 7. The vertical injection mechanism of a needleless syringe according to claim 1, characterized in that a transparent observation plate (24) is provided in the vertical observation window. 8. The vertical injection mechanism of a needleless syringe according to claim 1, characterized in that: at least three equal-height columns (30) are symmetrically provided at the lower end of the fixed ring (23), and the three equal-height columns (30) is fixed in the fixed ring (23) through the slot, and the three equal-height columns (30) are all equipped with springs (31).