CN217697518U - An insulin syringe that can push medicine slowly - Google Patents

Abstract

The utility model provides an insulin syringe capable of slowly pushing medicine, which comprises a pushing cavity, a buffer cavity and a medicine cavity which are arranged along the axial direction of a holding tube in sequence; a propelling block is arranged in the propelling cavity and can move along the axial direction of the holding tube; damping media are filled in the buffer cavity, a first piston head is arranged in the buffer cavity and divides the buffer cavity into an upper layer and a lower layer, a control rod extends upwards from the top end of the first piston head, the top end of the control rod is arranged in the propelling cavity, and a spring is arranged between the top end of the control rod and the propelling block; the medicine cavity is internally provided with a second piston head which moves synchronously with the first piston head. The utility model discloses a spring and damping medium cooperation, when using, will advance the piece earlier and push down for the spring atress compression makes the spring exert pressure to the control lever, makes the control lever to the motion of medicine chamber direction, through the rate of motion of damping medium and first piston head control lever, prevents that liquid medicine advancing speed is too fast, causes the discomfort to the patient.

Description

An insulin syringe that pushes medicine slowly

technical field

The utility model belongs to the field of medical supplies, in particular to an insulin syringe capable of slowly pushing medicine.

Background technique

Diabetes is a group of metabolic diseases characterized by hyperglycemia. Hyperglycemia is due to defects in insulin secretion or impaired biological effects. Now with the improvement of treatment methods, most diabetic patients use insulin injections at home to control their own blood sugar;

However, during the insulin injection process, since most patients have not received professional injection practice, using the existing syringe is not conducive to controlling the advancing speed of the liquid medicine during the insulin injection process.

Utility model content

In view of this, the utility model aims to propose an insulin syringe capable of slowly pushing medicine, so as to reduce the difficulty of using the syringe, so that patients can inject insulin by themselves.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

An insulin syringe capable of slowly pushing medicine, comprising a holding tube, in which a pushing chamber, a buffer chamber and a drug chamber are sequentially arranged along the axial direction of the holding pipe;

A pusher block is provided in the pusher cavity, and the pusher block can move along the axial direction of the holding tube;

The buffer cavity is filled with damping medium, a first piston head is placed in the buffer cavity, and the buffer cavity is divided into upper and lower layers, the first piston head can move along the axial direction of the holding tube, and the second A control rod extends upward from the top of the piston head. The control rod passes through the buffer chamber and is placed in the push chamber. A spring is arranged between the top of the control rod and the push block. One end of the spring is against the push block, and the other end against the top of the control rod, the first piston head is provided with a liquid hole;

The medicine cavity is provided with a second piston head, and the second piston head moves synchronously with the first piston head.

Further, a through hole is opened on the side wall of the holding tube, and a pressure head is placed in the through hole, and a guide surface is provided on the inner side of the pressure head, and a contact surface corresponding to the guide surface is provided on the top of the push block. , when the pressure head moves into the holding tube, the pushing block moves toward the drug cavity.

Further, the bottom end of the push block extends downwards out of the guide post, the top end of the control rod extends upwards out of the guide tube, the guide post is inserted into the guide tube, and the spring is sleeved outside the guide tube and the guide post.

Further, a sliding hole is opened on the side wall of the holding tube, and the length direction of the sliding hole is parallel to the axial direction of the holding tube, and the control rod extends outward from a slider, and the slider passes through the sliding hole Place outside the holding tube.

Further, the length of the sliding hole is greater than the moving distance of the pushing block.

Further, the first piston head extends downwards out of the linkage rod, and the linkage rod passes through the buffer chamber into the drug chamber and is fixedly connected with the second piston head.

Further, an air hole is formed on the side wall of the holding tube, the air hole is placed on the top of the medicine chamber, and the second piston head is placed under the air hole.

Further, the end of the medicine cavity is provided with a connecting mouth for connecting with a needle.

Compared with the prior art, an insulin syringe capable of slowly pushing medicine described in the utility model has the following advantages:

The utility model adopts the cooperation of the spring and the damping medium. When in use, the push block is pressed down first, so that the spring is compressed by force, and the spring exerts pressure on the control rod, so that the control rod moves toward the medicine chamber, and the damping medium and the second A piston head controls the movement speed of the control rod to prevent the medicine liquid from advancing too fast and causing discomfort to the patient.

The pressure head is set on the side of the holding tube, so that the patient can hold the syringe with one hand and inject at the same time;

The movement of the first piston head and the second piston head is controlled by means of a slider, so as to control the movement of the second piston head and extract the medicinal liquid.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is a schematic diagram of the overall structure of the syringe;

Figure 2 is a schematic cross-sectional view of the internal structure of the syringe;

Fig. 3 is a schematic diagram of the cooperative structure of the indenter and the push block.

Explanation of reference signs:

1-holding tube; 11-through hole; 12-sliding hole; 13-air hole; 2-propelling cavity; 21-propelling block; 211-contact surface; 23-pressure head; 231-guiding surface; 24-control rod; 241-guide tube; 242-slider; 25-spring; 3-buffer chamber; 31-linkage rod; 32-first piston head; The second piston head; 42-connecting mouth.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In describing the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention. Novel and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the utility model. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention through specific situations.

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The insulin syringe capable of slowly pushing medicine described in the utility model includes a holding tube 1, in which a propulsion chamber 2, a buffer chamber 3 and a drug chamber 4 are sequentially arranged along the axial direction of the holding pipe 1. In order to facilitate production, The holding pipe 1 can be a complete pipe fitting, and the holding pipe 1 is divided into a propulsion chamber 2, a buffer chamber 3, and a medicine chamber 4 through a corresponding partition plate in the middle of the pipe fitting; The shells of the buffer chamber 3 and the medicine chamber 4 are then combined to form the holding tube 1; Separate cavities are respectively fixed at different positions in the holding tube 1 .

Specifically, a pushing block 21 is provided in the pushing chamber 2, and the pushing block 21 can move along the axial direction of the holding pipe 1, and a through hole is opened on the side wall of the holding pipe 1 at the position of the pushing chamber 2 11. The through hole 11 is provided with a pressure head 23, the inside of the pressure head 23 is inclined with a guide surface 231, the top of the push block 21 is provided with a contact surface 211 corresponding to the guide surface 231, when the pressure head When 23 moves into the holding tube 1, the guide surface 231 is in contact with the contact surface 211, and then as the pressure head 23 moves into the holding tube 1, the pushing block 21 is squeezed to move toward the medicine cavity 4;

The first piston head 32 is built in the buffer cavity 3, and the first piston head 32 divides the buffer cavity 3 into upper and lower layers, and the upper and lower layers are filled with damping medium, and the first piston head 32 It can move along the axial direction of the holding pipe 1, and the first piston head 32 has a liquid hole 321 on the peripheral side, and the damping medium can pass through the liquid hole 321 and flow from one side of the piston head to the other. On the side, the liquid passage hole 321 is relatively small, so that the damping medium slowly flows from one side of the piston head to the other side. Those skilled in the art should know that the damping medium can be liquids such as silicone oil and castor oil. The first piston The top end of the head 32 extends upwards out of the control rod 24, the control rod 24 passes through the buffer chamber 3, and a sliding seal is provided between the top wall of the buffer chamber 3 and the side wall of the control rod 24 to prevent the damping medium from flowing out. In the push cavity 2, a spring 25 is arranged between the top of the control rod 24 and the push block 21. One end of the spring 25 abuts against the push block 21, and the other end abuts against the top of the control rod 24. The bottom end of the push block 21 The guide column 232 is extended downwards, and the top of the control rod 24 extends upwards out of the guide tube 241. The guide column 232 is inserted into the guide tube 241, and the spring 25 is sleeved outside the guide tube 241 and the guide column 232. , when the push block 21 moves toward the medicine chamber 4, the spring 25 is forced to contract, and during the contraction process of the spring 25, pressure is continuously applied to the control rod 24, at this time, the first piston head 32 moves toward the medicine chamber 4 , but due to the slow flow of the damping medium, the speed of movement of the first piston head 32 is slowed down;

The medicine cavity 4 is provided with a second piston head 41, and the first piston head 32 extends a linkage rod 31 toward the medicine chamber 4, and the end of the linkage rod is fixedly connected with the second piston head 41, so that the The second piston head 41 moves synchronously with the first piston head, and the linkage rod is in sliding and sealing connection with the bottom of the buffer chamber 3 to prevent the damping medium from flowing out of the buffer chamber 3. When the first piston head 32 moves toward the drug chamber 4, the first piston head 32 The mouth of the two pistons moves downward to push the medicinal liquid for injection.

In order to facilitate the control of the movement of the two piston heads and to draw in the medicinal liquid into the medicine chamber 4, the holding tube 1 has a sliding hole 12 on the side wall of the pushing chamber 2, and the length direction of the sliding hole 12 is in line with the holding pipe. 1 is parallel to the axial direction, the control rod 24 extends out from the slider 242, and the slider 242 is placed outside the holding tube 1 through the sliding hole 12, and the operator can control the first piston head by pushing the slider 242 32 and the second piston head 41 move and the length of the sliding hole 12 is greater than the moving distance of the push block 21 .

There is an air hole 13 on the side wall of the holding tube 1, the air hole 13 is placed on the top of the medicine chamber 4, and the second piston head 41 is placed below the air hole 13, when the second piston head 41 moves, through the air hole 13 Air is filled above the second piston head 41 so that the air pressure above the second piston head 41 is balanced with the outside world.

The end of the medicine chamber 4 is provided with a connecting mouth 42 for connecting with a needle, for connecting with a needle.

Flanges extend outward from the inside of the indenter to prevent the indenter from jumping out.

In the insulin syringe that can slowly push medicine described in the utility model, in the working process, the needle head is first installed on the connecting nozzle 42, and the slider 242 is pushed to be placed at the lowest position, which drives the second piston head 41 to move and discharge the medicine. Then the needle is inserted into the medicine bottle (such as an ampoule bottle), and the slider 242 is pushed upward, so that the second piston head 41 moves upward, so that the medicine liquid fills the medicine chamber 4, and then the medicine chamber 4 is lifted, Push the slider 242 in the direction of the medicine chamber 4, and use the second piston head 41 to discharge the air in the medicine chamber 4. In order to ensure the pressure effect of the spring 25, the spring 25 is in a slightly compressed state at this time, so that the two ends of the spring 25 Close to the end of the control rod 24 and the end of the push block 21, and then hold the needle into the part to be injected, press the pressure head 23, so that the spring 25 contracts, and under the pressure of the spring 25, the first piston head 32 and the second piston head 32 The movement of the second piston head 41 pushes the medicinal liquid into the patient's body until the second piston head 41 is still and an injection is completed. When the slide block is pushed upward, the control rod drives the spring and the push block to move upward, so that the push block resets.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (8)

1. An insulin syringe capable of slowly pushing medicine is characterized in that: comprises a holding tube (1), wherein a propelling cavity (2), a buffer cavity (3) and a medicine cavity (4) are sequentially arranged in the holding tube (1) along the axial direction of the holding tube;

a propelling block (21) is arranged in the propelling cavity (2), and the propelling block (21) can move along the axial direction of the holding tube (1);

the damping cavity (3) is filled with damping media, a first piston head (32) is arranged in the buffering cavity (3) and divides the buffering cavity (3) into an upper layer and a lower layer, the first piston head (32) can move along the axial direction of the holding tube (1), the top end of the first piston head (32) extends upwards to form a control rod (24), the control rod (24) penetrates through the buffering cavity (3) and is arranged in the propelling cavity (2), a spring (25) is arranged between the top end of the control rod (24) and the propelling block (21), one end of the spring (25) abuts against the propelling block (21) and the other end of the spring abuts against the top end of the control rod (24), and a liquid passing hole (321) is formed in the first piston head (32);

the medicine cavity (4) is internally provided with a second piston head (41), and the second piston head (41) and the first piston head (32) move synchronously.

2. An insulin syringe capable of slowly pushing a drug according to claim 1, wherein: the side wall of the holding tube (1) is provided with a through hole (11), a pressure head (23) is arranged in the through hole (11), the inner side of the pressure head (23) is obliquely provided with a guide surface (231), the top end of the propelling block (21) is provided with a contact surface corresponding to the guide surface (231), and when the pressure head (23) moves towards the inside of the holding tube (1), the propelling block (21) moves towards the direction of the medicine cavity (4).

3. An insulin syringe capable of slowly pushing a drug according to claim 1, wherein: the bottom end of the propelling block (21) downwards extends out of the guide column (232), the top end of the control rod (24) upwards extends out of the guide pipe (241), the guide column (232) is inserted into the guide pipe (241), and the spring (25) is sleeved outside the guide pipe (241) and the guide column (232).

4. An insulin pump capable of slowly pushing medicine according to claim 1, wherein: the side wall of the holding tube (1) is provided with a sliding hole (12), the length direction of the sliding hole (12) is parallel to the axial direction of the holding tube (1), the control rod (24) extends outwards to form a sliding block (242), and the sliding block (242) penetrates through the sliding hole (12) and is arranged outside the holding tube (1).

5. An insulin syringe capable of slowly pushing a drug according to claim 4, wherein: the length of the sliding hole (12) is larger than the movement distance of the propelling block (21).

6. An insulin syringe capable of slowly pushing a drug according to claim 1, wherein: the first piston head (32) extends downwards to form a linkage rod (31), and the linkage rod (31) penetrates through the buffer cavity (3) to enter the medicine cavity (4) and is fixedly connected with the second piston head (41).

7. An insulin pump capable of slowly pushing medicine according to claim 1, wherein: an air hole (13) is formed in the side wall of the holding tube (1), the air hole is formed in the top of the medicine cavity (4), and the second piston head (41) is arranged below the air hole (13).

8. An insulin syringe capable of slowly pushing a drug according to claim 1, wherein: the end part of the medicine cavity (4) is provided with a connecting nozzle (42) used for being connected with a needle head.

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