Injection device capable of controlling dosage

Abstract

The utility model relates to the technical field of injection devices, in particular to a dosage-controllable injection device, which comprises a syringe, a connecting rod arranged in the syringe and a piston fixedly mounted at the bottom end of the connecting rod, the piston is slidably connected with the syringe, scale marks are arranged on the surface of the syringe, a push button is fixedly mounted at the top end of the connecting rod, and the push button is fixedly mounted at the bottom end of the connecting rod. A left clamping groove and a right clamping groove are formed in the annular side face of the push button, the syringe is sleeved with a transparent sleeve, the transparent sleeve is in sliding connection with the syringe, a red marking line is arranged on the transparent sleeve, a left vertical rod and a right vertical rod which are symmetrical are fixedly installed on the top face of the transparent sleeve, and clamping blocks are fixedly installed on the inner side faces of rod bodies at the top ends of the vertical rods. And an arc-shaped plate is fixedly installed on the top face of the transparent sleeve, a locking screw is connected to the arc-shaped plate in a threaded mode, and the locking screw abuts against the injection cylinder. The syringe can control the injection amount, and is simple to operate and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of injection devices, and specifically, to an injection device with controllable dosage. Background Technique

[0002] In the medical field, injection is one of the common ways of administering drugs. When performing an injection operation, most often a syringe is used for the injection operation. First, the liquid medicine is aspirated into the syringe by the syringe, and then the liquid medicine inside is injected into the corresponding position through the syringe. At present, most syringes are composed of an outer cylinder, a piston, a connecting rod, and a push button. The piston is darker in color, generally black, and the thickness of the piston is relatively thick.

[0003] Although the outer cylinder is made of a transparent material, after the liquid medicine is contained inside, due to the liquid in the cylinder, through naked-eye observation, a refraction phenomenon is likely to occur, resulting in a higher or lower reading by the naked eye. At this time, it is difficult to ensure that medical staff can accurately observe the injection volume during specific injections by observing the position of the piston and the scale line. This may lead to an overdose or underdose of the drug, affecting the treatment effect and even posing a safety hazard; at this time, medical staff judge the drug dosage based on experience, which not only increases the operation difficulty but also increases the risk of errors. In view of this, we have proposed an injection device with controllable dosage. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide an injection device with controllable dosage to solve the defects proposed in the above background technique.

[0005] To achieve the above purpose, the present utility model provides the following technical solution:

[0006] An injection device with controllable dosage, including an injection cylinder, a connecting rod disposed inside the injection cylinder, and a piston fixedly installed at the bottom end of the connecting rod. The piston is slidably connected to the injection cylinder. Scale lines are provided on the surface of the injection cylinder along the height direction of the injection cylinder. A push button is fixedly installed at the top end of the connecting rod. Two symmetrically arranged card slots are provided on the circumferential side of the push button. A transparent sleeve is sleeved on the injection cylinder. The transparent sleeve is slidably connected to the injection cylinder. A red marking line is provided on the transparent sleeve. Two symmetrically arranged vertical rods are fixedly installed on the top surface of the transparent sleeve. A clamping block is fixedly installed on the inner side surface of the top end of the vertical rod. The clamping block is in clamping fit with the card slot.

[0007] Preferably, the red marking line is at half the height of the transparent sleeve, and the red marking line is a closed loop.

[0008] Preferably, the cross-section of the connecting rod is cross-shaped, and the size of the connecting rod is adapted to the size of the injection cylinder.

[0009] Preferably, the transparent sleeve is a transparent annular structure, and the size of the transparent sleeve is adapted to the size of the syringe barrel.

[0010] Preferably, an arc-shaped plate is fixedly installed on the top surface of the transparent sleeve, and a locking screw is threadedly connected to the arc-shaped plate, and the locking screw abuts against the syringe barrel.

[0011] Preferably, a knob is fixedly installed at the outer end of the locking screw, and a first anti-slip layer is provided on the surface of the knob.

[0012] Preferably, a second anti-slip layer is provided at the inner end of the locking screw, and the second anti-slip layer abuts against the outer surface of the syringe barrel.

[0013] Preferably, the inner diameter of the arc-shaped plate is larger than the inner diameter of the transparent sleeve, and the arc-shaped plate is a rigid arc-shaped plate structure.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Through the provided transparent sleeve, red marking line and scale line, the present utility model facilitates accurate reading operation by indicating the reading on the scale line through the red marking line outside the liquid medicine, which is beneficial to controlling the dosage. In addition, by using the vertical rod to limit the transparent sleeve to the push button, the transparent sleeve can be driven to move by the push button, making it more convenient to control the dosage, achieving the effect of facilitating the control of the dosage for injection.

[0016] 2. Through the provided arc-shaped plate and locking screw, the present utility model facilitates tightening the locking screw after a single injection is completed, realizing the limiting operation of the transparent sleeve, and further realizing the limiting operation of the push button and the piston, so that the push button and the piston will not move easily. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the exploded structural schematic diagram of the present utility model;

[0019] Figure 3 is one of the partial structural schematic diagrams of the present utility model;

[0020] Figure 4 is the other partial structural schematic diagram of the present utility model;

[0021] Figure 5 is the structural schematic diagram of the locking screw of the present utility model;

[0022] The meanings of the various reference numerals in the figure are:

[0023] 1. Syringe barrel; 10. Scale line; 11. Connecting rod; 12. Piston; 13. Push button; 131. Card slot;

[0024] 2. Transparent sleeve; 20. Red marking line; 21. Vertical rod; 22. Block; 23. Arc plate; 24. Locking screw; 241. Knob; 242. First anti-slip layer; 25. Second anti-slip layer. Detailed implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1 - 5 , the present invention provides a technical solution: a controllable dosage injection device, including a syringe barrel 1, a connecting rod 11 arranged in the syringe barrel 1, and a piston 12 fixedly installed at the bottom end of the connecting rod 11. The piston 12 is slidably connected with the syringe barrel 1. A scale line 10 is arranged on the surface of the syringe barrel 1 along the height direction of the syringe barrel 1. The top end of the connecting rod 11 is fixedly installed with a push button 13. On the circumferential side of the push button 13, there are two symmetrically arranged card slots 131 on the left and right. A transparent sleeve 2 is sleeved on the syringe barrel 1. The transparent sleeve 2 is slidably connected with the syringe barrel 1. A red marking line 20 is arranged on the transparent sleeve 2. On the top surface of the transparent sleeve 2, two symmetrically arranged vertical rods 21 are fixedly installed. On the inner side surface of the top end rod body of the vertical rod 21, a block 22 is fixedly installed. The block 22 is in snap-fit with the card slot 131, which is convenient for using the red marking line 20 to indicate the position on the scale line 10 to understand the specific injection volume, so as to achieve the effect of controlling the injection volume.

[0027] In this embodiment, the red marking line 20 is at half the height of the transparent sleeve 2. The red marking line 20 is a ring that is connected end to end, which is convenient for observing and operating by comparing the red marking line 20 with the scale line 10.

[0028] Specifically, the cross-section of the connecting rod 11 is cross-shaped, and the size of the connecting rod 11 is adapted to the size of the syringe barrel 1 for the stable sliding operation of the connecting rod 11.

[0029] Furthermore, the transparent sleeve 2 is a transparent ring structure, and the size of the transparent sleeve 2 is adapted to the size of the syringe barrel 1, so that the transparent sleeve 2 can be stably sleeved on the syringe barrel 1 for moving operation.

[0030] In addition, an arc-shaped plate 23 is fixedly installed on the top surface of the transparent sleeve 2. A locking screw 24 is threadedly connected to the arc-shaped plate 23. The locking screw 24 abuts against the syringe barrel 1. A second anti-slip layer 25 is provided at the inner end of the locking screw 24. The second anti-slip layer 25 abuts against the outer surface of the syringe barrel 1. The second anti-slip layer 25 can be made of rubber material. By providing the second anti-slip layer 25, it is beneficial to increase the friction force and can achieve an anti-slip effect.

[0031] It should be noted that a knob 241 is fixedly installed at the outer end of the locking screw 24. A first anti-slip layer 242 is provided on the surface of the knob 241, which is convenient for driving the locking screw 24 to rotate by rotating the knob 241.

[0032] It should be noted that the inner diameter of the arc-shaped plate 23 is larger than the inner diameter of the transparent sleeve 2. The arc-shaped plate 23 is a rigid arc-shaped plate structure, so that the arc-shaped plate 23 does not directly abut against the syringe barrel 1, avoiding friction between the arc-shaped plate 23 and the syringe barrel 1.

[0033] In this embodiment, the vertical rod 21 is made of elastic plastic material or metal material with certain elasticity, so that it can deform. After the external force is removed, it can return to its original state, which is beneficial for the clamping block 22 to be inserted into the clamping groove 131. Since the clamping block 22 and the clamping groove 131 are in clamping fit, the whole transparent sleeve 2 can be disassembled. After disassembly, it can be disinfected and reused.

[0034] When the injection device with controllable dosage of the present utility model is in use, the transparent sleeve 2 is sleeved on the syringe barrel 1, and then the clamping block 22 is inserted into the clamping groove 131 to limit the transparent sleeve 2 on the push button 13. Then, the liquid medicine suction operation is carried out. During the injection process, the specific injection amount is understood by observing the position of the red marking line 20 indicated on the scale line 10. After injecting the corresponding amount of liquid medicine, the locking screw 24 is tightened so that the second anti-slip layer 25 abuts against the syringe barrel 1 to complete the limiting operation. When performing the next injection operation, first loosen the locking screw 24, then observe the position of the current red marking line 20 indicated on the scale line 10, calculate the position where the red marking line 20 should be pushed to next, and then perform the injection operation.

[0035] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and do not limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An injection device with controllable dosage, comprising a syringe barrel (1), a connecting rod (11) arranged in the syringe barrel (1), and a piston (12) fixedly installed at the bottom end of the connecting rod (11), characterized in that: The piston (12) is slidably connected to the syringe barrel (1). Scale lines (10) are provided on the surface of the syringe barrel (1) along the height direction of the syringe barrel (1). A push button (13) is fixedly installed at the top end of the connecting rod (11). Two symmetrically arranged card slots (131) are provided on the circumferential side of the push button (13). A transparent sleeve (2) is sleeved on the syringe barrel (1). The transparent sleeve (2) is slidably connected to the syringe barrel (1). A red marking line (20) is provided on the transparent sleeve (2). Two symmetrically arranged vertical rods (21) are fixedly installed on the top surface of the transparent sleeve (2). A clamping block (22) is fixedly installed on the inner side surface of the top end of the vertical rod (21). The clamping block (22) is in clamping fit with the card slot (131).

2. The injection device with controllable dosage according to claim 1, characterized in that: The red marking line (20) is located at half of the height of the transparent sleeve (2), and the red marking line (20) is a closed loop.

3. The injection device with controllable dosage according to claim 1, characterized in that: The cross section of the connecting rod (11) is cross-shaped, and the size of the connecting rod (11) is adapted to the size of the syringe barrel (1).

4. The injection device with controllable dosage according to claim 1, characterized in that: The transparent sleeve (2) is a transparent annular structure, and the size of the transparent sleeve (2) is adapted to the size of the syringe barrel (1).

5. The injection device with controllable dosage according to claim 1, characterized in that: An arc-shaped plate (23) is fixedly installed on the top surface of the transparent sleeve (2). A locking screw (24) is threadedly connected to the arc-shaped plate (23), and the locking screw (24) abuts against the syringe barrel (1).

6. The injection device with controllable dosage according to claim 5, characterized in that: A knob (241) is fixedly installed at the outer end of the locking screw (24). A first anti-slip layer (242) is provided on the surface of the knob (241).

7. The injection device with controllable dosage according to claim 6, characterized in that: A second anti-slip layer (25) is provided at the inner end of the locking screw (24), and the second anti-slip layer (25) abuts against the outer surface of the syringe barrel (1).

8. The injection device with controllable dosage according to claim 5, characterized in that: The inner diameter of the arc-shaped plate (23) is larger than the inner diameter of the transparent sleeve (2), and the arc-shaped plate (23) is a rigid arc-shaped plate structure.

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