Quantitative automatic liquid extraction injector

Abstract

The utility model discloses a quantitative automatic liquid extraction injector, and particularly relates to the technical field of injectors, which comprises a fixed cylinder, a needle head is arranged at one end of the fixed cylinder, and a piston is arranged in the fixed cylinder. According to the automatic medicine extraction device, the driving gear, the toothed plate and the first driving assembly are arranged, the connecting framework can be controlled to drive the piston to slide in the fixing cylinder, and therefore automatic medicine extraction can be rapidly achieved; the movable block can drive the baffle ring to move between the connecting framework and the inner wall of the fixed cylinder through the U-shaped connecting rod, so that the position of the baffle ring can be adjusted, the piston can be controlled to stop at a marking line of a medicament needing to be extracted by adjusting the position of the baffle ring in advance, and accurate extraction of the medicament can be completed at a time. The quantitative automatic liquid pumping device is simple and convenient to operate, time-saving and labor-saving, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of syringes, in particular to a quantitative automatic liquid extraction syringe. Background Art

[0002] A syringe is a common medical device. The process of extracting and injecting gas or liquid with a needle is called injection. A syringe consists of a syringe with a small hole at the front end and a matching piston core rod. It is used to inject a small amount of liquid or gas into or extract it from areas that are inaccessible by other methods. When the core rod is pulled out, the liquid or gas is sucked from the small hole at the front end of the syringe, and when the core rod is pushed in, the liquid or gas is squeezed out. Syringes can also be used for medical equipment, containers, and scientific instruments such as some chromatography for injection through a rubber diaphragm.

[0003] At present, when using a syringe, in order to accurately extract the injection dose required by the patient, hospital staff need to manually push and pull the handle to drive the piston to move, and at the same time, they need to observe the marking line on the syringe with the naked eye at all times. Once the piston is pushed too much, it will cause an excess of medicine, while pushing it too little will cause insufficient medicine. It is necessary to ensure that the medicine can be extracted stably and evenly, which is not only difficult to operate, but also very easy to make mistakes, greatly affecting work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a quantitative automatic liquid extraction syringe, which can control the connecting frame to drive the piston to slide in the fixed cylinder by setting a driving gear, a toothed plate and a first driving component, so that the automatic extraction of the medicine can be quickly realized, and by setting a U-shaped connecting rod, a movable block, a retaining ring and a second driving component, the movable block can drive the retaining ring to move between the connecting frame and the inner wall of the fixed cylinder through the U-shaped connecting rod, so that the position of the retaining ring can be adjusted, and by adjusting the position of the retaining ring in advance, the piston can be controlled to stop at the marking line of the medicine to be extracted, so that the accurate extraction of the medicine can be completed at one time, thereby realizing quantitative automatic liquid extraction, simple and convenient operation, saving time and effort, and greatly improving work efficiency, so as to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a quantitative automatic liquid extraction syringe, comprising:

[0006] A fixed cylinder, one end of which is provided with a needle, and a piston is provided inside the fixed cylinder, one end of the piston relative to the needle is fixed with a connecting frame, one end of the connecting frame extends outside the fixed cylinder and is connected with a fixing handle;

[0007] A toothed plate, the toothed plate is fixed on one side of the connecting frame, and the opening of the fixed cylinder is rotatably connected to a driving gear through a rotating shaft, the driving gear is meshed with the toothed plate, and a first driving assembly is provided on the fixed cylinder, and the first driving assembly is used to drive the driving gear to rotate;

[0008] A U-shaped connecting rod is inserted into the open end of the fixed cylinder, and one end of the U-shaped connecting rod extending to the inside of the fixed cylinder is connected to a retaining ring, and one end of the U-shaped connecting rod extending to the outside of the fixed cylinder is connected to a movable active block, and a second driving assembly is provided between the active block and the fixed cylinder.

[0009] Preferably, the second drive assembly includes support seats symmetrically fixed at both ends of the top side of the fixed cylinder, and a threaded rod is rotatably connected between the two support seats through a bearing, one end of the threaded rod passes through the support seat and is fixedly connected to a rotating handle, and the movable block is connected to the threaded rod by a threaded engagement.

[0010] Preferably, the connecting frame is composed of a connecting column and three bone plates annularly fixed to the outer wall of the connecting column, and a retaining ring is embedded between two adjacent bone plates.

[0011] Preferably, the side wall of the fixed tube is provided with scale lines, one end of the movable block is connected to an indicator bar facing the scale lines, and the indicator bar is in contact with the fixed tube.

[0012] Preferably, the first driving assembly includes a driving motor fixedly connected to the open end of the fixing cylinder via a bracket, and the output end of the driving motor is connected to the axis of the driving gear.

[0013] Preferably, the outer wall of the handle is provided with anti-slip convex patterns.

[0014] Preferably, the outer cover of the needle is provided with a protective cover.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] By setting a driving gear, a toothed plate and a first driving component, the connecting frame can be controlled to drive the piston to slide in the fixed cylinder, thereby quickly realizing the automatic extraction of the medicine, and by setting a U-shaped connecting rod, a movable block, a retaining ring and a second driving component, the movable block can drive the retaining ring to move between the connecting frame and the inner wall of the fixed cylinder through the U-shaped connecting rod, so that the position of the retaining ring can be adjusted, and by adjusting the position of the retaining ring in advance, the piston can be controlled to stop at the marking line of the medicine to be extracted, so that the accurate extraction of the medicine can be completed at one time, and then the quantitative automatic extraction of liquid can be realized, the operation is simple and convenient, time and labor are saved, and the work efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 This is one of the overall structural diagrams of the utility model;

[0019] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the fixed cylinder of the utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the movable block and the retaining ring of the utility model;

[0022] Figure 5 It is a schematic diagram of the connection structure between the driving gear and the connection frame of the utility model.

[0023] Description of reference numerals:

[0024] 1. Fixed cylinder; 2. Needle; 3. Protective cover; 4. Connecting frame; 5. Piston; 6. Fixed handle; 7. Driving motor; 8. Driving gear; 9. Tooth plate; 10. Support seat; 11. Threaded rod; 12. Movable block; 13. Turning handle; 14. U-shaped connecting rod; 15. Retaining ring; 16. Scale line; 17. Indicator bar. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-Figure 5 A quantitative automatic liquid extraction syringe is shown, comprising:

[0027] A fixed cylinder 1, one end of which is provided with a needle 2, and a piston 5 is provided inside the fixed cylinder 1, one end of the piston 5 relative to the needle 2 is fixed with a connecting frame 4, one end of the connecting frame 4 extends outside the fixed cylinder 1 and is connected with a fixed handle 6;

[0028] The outer sleeve of the needle 2 is provided with a protective sleeve 3. The needle 2 can be shielded and protected by the protective sleeve 3.

[0029] The tooth plate 9 is fixed on one side of the connecting frame 4, and the opening of the fixed cylinder 1 is rotatably connected to the driving gear 8 through the rotating shaft, and the driving gear 8 is meshed with the tooth plate 9. The fixed cylinder 1 is provided with a first driving assembly, and the first driving assembly is used to drive the driving gear 8 to rotate;

[0030] The first driving assembly includes a driving motor 7 fixedly connected to the open end of the fixed cylinder 1 through a bracket, and the output end of the driving motor 7 is connected to the axis of the driving gear 8.

[0031] A U-shaped connecting rod 14 is inserted into the open end of the fixed cylinder 1, and one end of the U-shaped connecting rod 14 extending to the inside of the fixed cylinder 1 is connected to a retaining ring 15, and one end of the U-shaped connecting rod 14 extending to the outside of the fixed cylinder 1 is connected to a movable active block 12, and a second driving component is provided between the active block 12 and the fixed cylinder 1.

[0032] When in use, the driving motor 7 can be used to drive the driving gear 8 to rotate, so that the driving gear 8 drives the toothed plate 9 to move, and then the toothed plate 9 drives the connecting frame 4 to move, so that the connecting frame 4 drives the piston 5 to slide in the fixed cylinder 1. When the piston 5 moves from the needle 2 to the open end, the automatic extraction of the medicine can be quickly realized.

[0033] The connecting frame 4 is composed of a connecting column and three bone plates annularly fixed to the outer wall of the connecting column, and a retaining ring 15 is embedded between two adjacent bone plates.

[0034] The second driving assembly includes support seats 10 symmetrically fixed at both ends of the top side of the fixed cylinder 1, and a threaded rod 11 is rotatably connected between the two support seats 10 through a bearing, one end of the threaded rod 11 passes through the support seat 10 and is fixedly connected to a handle 13, and a movable block 12 is screwed on the threaded rod 11 through a thread.

[0035] The side wall of the fixed cylinder 1 is provided with a scale line 16 , and one end of the movable block 12 is connected with an indication bar 17 facing the scale line 16 , and the indication bar 17 is in contact with the fixed cylinder 1 .

[0036] The outer wall of the rotating handle 13 is provided with anti-skid convex patterns. The anti-skid effect of the rotating handle 13 can be greatly improved by the anti-skid convex patterns.

[0037] By turning the handle 13, the handle 13 can drive the threaded rod 11 to rotate between the two support seats 10, and then under the drive of the thread, the threaded rod 11 can drive the movable block 12 to move, so that the movable block 12 drives the U-shaped connecting rod 14 to move, and then the U-shaped connecting rod 14 can drive the retaining ring 15 at the other end to move between the connecting frame 4 and the inner wall of the fixed cylinder 1, so that the position of the retaining ring 15 can be adjusted, and the blocking of the retaining ring 15 can hinder the movement of the piston 5 in the fixed cylinder 1, and by adjusting the position of the retaining ring 15 in advance to control the piston 5 to stop at the marking line of the medicine to be extracted, the accurate extraction of the medicine can be completed at one time, and then the quantitative automatic extraction can be realized, the operation is simple and convenient, time-saving and labor-saving, and the work efficiency is greatly improved;

[0038] In addition, the movable block 12 can also drive the indicator bar 17 to move along the scale line 16 while driving the retaining ring 15 to move through the U-shaped connecting rod 14, so as to facilitate hospital staff to more accurately adjust the moving distance of the retaining ring 15.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A quantitative automatic liquid extraction syringe, characterized in that: include: A fixed cylinder (1), one end of which is provided with a needle (2), and a piston (5) is provided inside the fixed cylinder (1), one end of the piston (5) being fixed with a connecting frame (4) opposite to the needle (2), one end of the connecting frame (4) extending outside the fixed cylinder (1) and connected to a fixing handle (6); a toothed plate (9), the toothed plate (9) being fixed on one side of the connecting frame (4), and the opening of the fixed cylinder (1) being rotatably connected to a driving gear (8) via a rotating shaft, the driving gear (8) being meshed with the toothed plate (9), and the fixed cylinder (1) being provided with a first driving assembly, and the first driving assembly being used to drive the driving gear (8) to rotate; A U-shaped connecting rod (14) is inserted into the open end of the fixed cylinder (1), and one end of the U-shaped connecting rod (14) extending to the inside of the fixed cylinder (1) is connected to a retaining ring (15), and one end of the U-shaped connecting rod (14) extending to the outside of the fixed cylinder (1) is connected to a movable movable block (12), and a second driving component is provided between the movable block (12) and the fixed cylinder (1).

2. A quantitative automatic liquid extraction syringe according to claim 1, characterized in that: The second driving assembly comprises support seats (10) symmetrically fixed at both ends of the top side of the fixed cylinder (1), and a threaded rod (11) is rotatably connected between the two support seats (10) via a bearing, one end of the threaded rod (11) passes through the support seat (10) and is fixedly connected to a rotating handle (13), and the movable block (12) is screwed on the threaded rod (11) via a thread.

3. A quantitative automatic liquid extraction syringe according to claim 1, characterized in that: The connecting frame (4) is composed of a connecting column and three bone plates annularly fixed to the outer wall of the connecting column, and a retaining ring (15) is embedded between two adjacent bone plates.

4. A quantitative automatic liquid extraction syringe according to claim 1, characterized in that: The side wall of the fixed cylinder (1) is provided with a scale line (16), one end of the movable block (12) is connected with an indication bar (17) facing the scale line (16), and the indication bar (17) is in close contact with the fixed cylinder (1).

5. The quantitative automatic liquid extraction syringe according to claim 1, characterized in that: The first driving assembly comprises a driving motor (7) fixedly connected to the open end of the fixed cylinder (1) via a bracket, and the output end of the driving motor (7) is connected to the axis of the driving gear (8).

6. A quantitative automatic liquid extraction syringe according to claim 2, characterized in that: The outer wall of the turning handle (13) is provided with anti-slip convex patterns.

7. The quantitative automatic liquid extraction syringe according to claim 1, characterized in that: The outer cover of the needle (2) is provided with a protective cover (3).

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