CN215309232U

CN215309232U - Novel insulin needle

Info

Publication number: CN215309232U
Application number: CN202120309540.3U
Authority: CN
Inventors: 宋勇
Original assignee: Weihai Kalmade Medical Technology Co ltd
Current assignee: Weihai Kalmade Medical Technology Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-12-28
Anticipated expiration: 2031-02-03

Abstract

The utility model discloses a novel insulin needle, which comprises a shell, wherein the shell is in a cylindrical shape; a liquid storage cylinder is arranged in the shell in a sliding way, and insulin liquid medicine is filled in the liquid storage cylinder; the lower end of the liquid storage cylinder is fixedly connected with a needle head; the bottom end of the shell is sunken towards the inside of the shell to form a needle hiding cavity which is surrounded by the limiting seat; the needle head passes through the limiting seat and is inserted into the needle hiding cavity and does not exceed the needle hiding cavity; the outside cover of spacing seat is equipped with the spring, and the bottom of spring is supported on casing lower extreme inner wall, and the top of spring is supported on the liquid storage cylinder of syringe needle both sides. The needle head can not be exposed when the disposable syringe is used for injection, the disposable syringe is friendly to patients suffering from needle sickness, and can not cause great psychological burden, and when the disposable syringe is discarded, the needle head automatically retracts into the needle hiding cavity, so that injuries caused by the disposal of recovery personnel are effectively avoided; in addition, the utility model has the characteristic of two-stage injection, can finish two processes of needle withdrawing and injection by one hand, and is simple and convenient to operate.

Description

Novel insulin needle

Technical Field

The utility model relates to the field of medical instruments, in particular to a novel insulin needle.

Background

With the increasing number of diabetics, daily insulin injections have been very frequent. For the tradition insulin of directly using the syringe injection, the injection instrument that now more commonly uses is insulin pen, can cooperate the insulin syringe needle to use, accomplishes subcutaneous injection. But traditional insulin pen and syringe needle generally adopt embedded syringe needle, are closed with insulin injection pen soon by the syringe needle fixing base during the use and are connected, increase the preceding operational complexity of injection to sharp-pointed syringe needle can increase psychological burden to the patient of carsickness. And after the needle is used, the needle is exposed outside, so that waste recovery personnel are easily injured and the recovery is not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the technology, the utility model provides a novel insulin needle.

In order to solve the technical problems, the utility model adopts the technical scheme that the novel insulin needle comprises a shell, wherein the shell is in a cylindrical shape; a liquid storage cylinder is arranged in the shell in a sliding way, and insulin liquid medicine is filled in the liquid storage cylinder; the lower end of the liquid storage cylinder is fixedly connected with a needle head; the bottom end of the shell is sunken towards the inside of the shell to form a needle hiding cavity which is surrounded by the limiting seat; the needle head passes through the limiting seat and is inserted into the needle hiding cavity and does not exceed the needle hiding cavity; a spring is sleeved outside the limiting seat, the bottom end of the spring abuts against the inner wall of the lower end of the shell, and the top end of the spring abuts against the liquid storage cylinders on the two sides of the needle head;

the upper end of the cylinder wall of the liquid storage cylinder is fixedly connected with a track rod, the track rod extends upwards, and the upper end part of the track rod is provided with a pressing cap; the pressing cap is provided with a through hole corresponding to the track rod, the upper end of the track rod is inserted into the through hole, and the through hole relatively fixes the track rod in the through hole through wax sealing;

a liquid outlet piston is arranged in the liquid storage cylinder in a sliding manner, and the insulin liquid medicine is extruded out of the needle head by the compression of the liquid outlet piston; the liquid outlet piston comprises a liquid outlet push rod, and the liquid outlet push rod extends upwards and has a distance with the pressing cap.

Further, the distance between the top end of the liquid outlet push rod and the pressing cap is larger than the distance of the track rod penetrating through the wax layer.

Furthermore, the inner wall of the shell is provided with a limiting block, and the limiting block limits the liquid storage cylinder in the shell.

Furthermore, the middle part of the limiting seat is provided with a pinhole for accommodating the pillow to pass through.

Furthermore, the side wall of the bottom of the shell is provided with a convex block protruding towards the inside of the shell, so that a spring cavity for accommodating the spring is formed between the convex block and the limiting seat, and the height of the convex block is lower than that of the limiting seat.

Furthermore, the number of the track rods is two, and the two track rods are symmetrical to each other.

Further, the upper surface of the pressing cap is provided with a thumb pressing groove which is concave downwards, and the thumb pressing groove is positioned between the two track rods.

The needle head can not be exposed when the disposable syringe is used for injection, the disposable syringe is friendly to patients suffering from needle sickness, and can not cause great psychological burden, and when the disposable syringe is discarded, the needle head automatically retracts into the needle hiding cavity, so that injuries caused by the disposal of recovery personnel are effectively avoided; in addition, the utility model has the characteristic of two-stage injection, can finish two processes of needle withdrawing and injection by one hand, and is simple and convenient to operate.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 shows the structure of the present invention in the needle-out state.

Fig. 3 shows the structure of the present invention in the injection state.

Fig. 4 shows the structure of the present invention in a reset state.

In the figure: 1. a housing; 2. a liquid storage cylinder; 3. a needle head; 4. a needle hiding cavity; 5. a limiting seat; 6. a spring; 7. a track rod; 8. pressing the cap; 9. perforating; 10. a liquid outlet piston; 11. a liquid outlet push rod; 12. a pinhole; 13. a bump; 14. a spring cavity; 15. the thumb presses the groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 shows a novel insulin needle, which comprises a shell 1, wherein the shell is in a cylindrical shape; a liquid storage barrel 2 is arranged in the shell in a sliding way, and insulin liquid medicine is filled in the liquid storage barrel; the lower end of the liquid storage cylinder is fixedly connected with a needle head 3; the bottom end of the shell is sunken towards the inside of the shell to form a needle hiding cavity 4 which is surrounded by a limiting seat 5; the middle part of the limiting seat is provided with a needle hole 12 for accommodating the pillow to pass through, the needle head passes through the needle hole and is inserted into the needle hiding cavity and does not exceed the needle hiding cavity, and the needle hiding cavity is used for hiding the unused needle head to prevent the needle head from being exposed outside.

The outside cover of spacing seat is equipped with spring 6, and the bottom of spring supports on casing lower extreme inner wall, and the top of spring supports on the liquid storage cylinder of syringe needle both sides, and the spring provides elasticity for the liquid storage cylinder, and when pushing down the liquid storage cylinder, the syringe needle will stretch out from hiding the needle chamber, and after removing the pressure to the liquid storage cylinder, the elasticity of spring can upwards bounce the liquid storage cylinder to receive the syringe needle back and hide the needle chamber.

The lateral wall of casing bottom is provided with to the inside bellied lug 13 of casing, makes to form the spring chamber 14 that holds the spring between lug and the spacing seat, and the lug height is less than the height of spacing seat, and the spring chamber is used for holding the spring to play certain restriction to the spring.

In order to avoid the liquid storage cylinder from popping out of the shell when popping up, a limiting block is arranged on the inner wall of the shell and limits the liquid storage cylinder in the shell, and the limiting block is positioned at the upper end of the shell in the embodiment and can block the liquid storage cylinder at the upper end of the liquid storage cylinder; the liquid storage cylinder can be provided with a sliding chute for the limiting block to slide on the surface, and the limiting device corresponding to the limiting block can prevent the liquid storage cylinder from popping out from the upper part of the shell.

The upper end of the cylinder wall of the liquid storage cylinder is fixedly connected with two track rods 7, and the two track rods are symmetrical to each other. The track rod extends upwards, and the upper end part of the track rod is provided with a pressing cap 8; the pressing cap is provided with a through hole 9 corresponding to the track rod, the upper end of the track rod is inserted into the through hole, and the track rod is relatively fixed in the through hole through wax sealing by the through hole; the pressing cap is pressed downwards, so that the track rod and the liquid storage cylinder which are connected into a whole with the pressing cap move downwards together, the spring is extruded, and the needle head extends out of the needle hiding cavity. When the liquid storage cylinder moves to the bottom end of the shell, the pressing cap is continuously pressed down, and the rail rod penetrates through the wax layer of the wax seal. Because the force to deform the spring is less and the force to break the wax layer is significantly greater than the force to compress the spring, the spring is preferentially compressed when the cap is depressed.

The liquid outlet piston 10 is arranged in the liquid storage cylinder in a sliding way, and the principle of the liquid outlet piston is the same as that of the existing disposable syringe, and the insulin liquid medicine can be extruded out of the needle head by the compression of the liquid outlet piston; the liquid outlet piston comprises a liquid outlet push rod 11, the distance between the top end of the liquid outlet push rod and the pressing cap is larger than the distance of the track rod penetrating through the wax layer, a section of buffer is provided for the track rod penetrating through the wax layer, and force exerting unevenness during subsequent injection is prevented.

The using method of the utility model comprises the following steps:

first step, alignment: this insulin needle accessible aseptic sealed bag packs, makes whole insulin needle all can directly tear the bag open and use, aseptic health. When the device is used, the sterile sealing bag is firstly disassembled, the insulin needle is taken out, the shell is held by four fingers and a palm of one hand, the upper surface of the pressing cap is provided with a thumb pressing groove 15 which is concave downwards, the thumb is placed on the thumb pressing groove, after the thumb pressing groove is held, the injection position is accurately found, and the insulin needle is abutted to the skin.

Secondly, pressing the first section of the cap to move, namely, withdrawing the needle: the thumb exerts force to press the pressing cap downwards until resistance occurs, namely the first section of displacement. Under the effect of pressing, make and press cap and take track pole and liquid storage cylinder together move down as a whole, the liquid storage cylinder makes the spring compression, at the descending in-process of liquid storage cylinder, the syringe needle of liquid storage cylinder stretches out and hides the needle chamber and pierces the skin, and the bottom of liquid storage cylinder reachs spacing seat, because spacing seat block, make the liquid storage cylinder be difficult to continue down, consequently appear pressing resistance, the state of insulin needle this moment is as shown in fig. 2.

Thirdly, pressing a second section of the cap to displace and inject: when the pressing resistance occurs, the liquid storage cylinder reaches the bottommost end of the shell at the moment and cannot move downwards continuously. At the moment, the thumb is slightly pressed downwards with force, the perforation where the track rod is located is wax seal, pressure is continuously applied to the pressing cap, so that the track rod can penetrate through the wax layer and penetrate out of the upper end of the perforation, after the sealing effect of the wax seal is avoided, the pressing cap can move independently of the liquid storage barrel and can continuously move downwards along the track rod under the action of pressure until the liquid outlet push rod is propped, the pressing cap pushes the liquid outlet push rod by continuous pressing, and the liquid outlet piston is further pushed to inject insulin medicines in the liquid storage barrel, as shown in fig. 3.

In this embodiment, the track rods are two, so that the thumb indent is disposed between the two track rods, thereby preventing the track rods from being injured when penetrating the wax layer.

Step four, resetting: the pressing cap is pressed to the bottom, that is, the insulin liquid medicine in the liquid storage barrel is completely injected into the body, at the moment, the thumb force is kept unchanged (the extending state of the needle head is kept), the shell is held to pull out the needle head, the thumb is relaxed after the thumb is pulled out, the needle head is brought back to the needle hiding cavity through the deformation of the spring, the insulin needle can be discarded, and the state of the insulin needle in the reset state is shown in figure 4.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.

Claims

1. A novel insulin needle is characterized in that: comprises a shell (1) which is in a cylinder shape; a liquid storage barrel (2) is arranged in the shell in a sliding way, and insulin liquid medicine is filled in the liquid storage barrel; the lower end of the liquid storage cylinder is fixedly connected with a needle head (3); the bottom end of the shell is sunken towards the inside of the shell to form a needle hiding cavity (4), and the needle hiding cavity is enclosed by a limiting seat (5); the needle head passes through the limiting seat and is inserted into the needle hiding cavity and does not exceed the needle hiding cavity; a spring (6) is sleeved outside the limiting seat, the bottom end of the spring abuts against the inner wall of the lower end of the shell, and the top end of the spring abuts against the liquid storage cylinders on the two sides of the needle head;

the upper end of the cylinder wall of the liquid storage cylinder is fixedly connected with a track rod (7), the track rod extends upwards, and the upper end part of the track rod is provided with a pressing cap (8); the pressing cap is provided with a through hole (9) corresponding to the track rod, the upper end of the track rod is inserted into the through hole, and the track rod is relatively fixed in the through hole through wax sealing by the through hole;

a liquid outlet piston (10) is arranged in the liquid storage cylinder in a sliding manner, and the insulin liquid medicine is extruded out of the needle head by the compression of the liquid outlet piston; the liquid outlet piston comprises a liquid outlet push rod (11), and the liquid outlet push rod extends upwards and has a distance with the pressing cap.

2. The novel insulin needle according to claim 1, characterized in that: the distance between the top end of the liquid outlet push rod and the pressing cap is larger than the distance of the track rod penetrating through the wax layer.

3. The novel insulin needle according to claim 2, characterized in that: the inner wall of the shell is provided with a limiting block which limits the liquid storage cylinder in the shell.

4. The novel insulin needle according to claim 3, wherein: the middle part of the limiting seat is provided with a pinhole (12) for accommodating the pillow to pass through.

5. The novel insulin needle according to claim 4, wherein: the lateral wall of casing bottom is provided with to the inside bellied lug (13) of casing, makes to form the spring chamber (14) that hold the spring between lug and the spacing seat, and the lug height is less than the height of spacing seat.

6. The novel insulin needle according to claim 5, wherein: the track pole is two, and two track poles are mutual symmetry.

7. The novel insulin needle according to claim 6, wherein: the upper surface of the pressing cap is provided with a thumb pressing groove (15) which is sunken downwards, and the thumb pressing groove is positioned between the two track rods.