WO2014067220A1

WO2014067220A1 - Safety insulin needle and method for using same

Info

Publication number: WO2014067220A1
Application number: PCT/CN2013/000085
Authority: WO
Inventors: 张林锋
Original assignee: Zhang Linfeng
Priority date: 2012-10-30
Filing date: 2013-01-28
Publication date: 2014-05-08
Also published as: CN103405832A; CN103405832B

Abstract

Disclosed is a safety insulin needle, comprising: a needle stand; a needle tube fitting base inside the needle stand; an insulin pen puncture needle and an insulin injection needle provided respectively at an upper part and a lower part of the needle tube fitting base; a self-locking holder provided at the other end of the needle stand, wherein one end of the self-locking holder is sleeved in the other end of the needle stand; a push cylinder inside the self-locking holder, wherein one end of the push cylinder is located within a cavity of the needle stand and penetrates through the needle tube fitting base to be located within the fitting part, and the other end of the push cylinder is pressed against a self-locking flap on the wall of a cavity within the self-locking holder; a needle safeguard having one end connected to an opening at the other end of the self-locking holder, wherein the other end of the needle safeguard suspends and the needle safeguard is connected to the cavity within the needle stand by a spring. A built-in safety injection needle structure is used, the insulin syringe needle is sleeved by the elastic contractible safeguard, and displacement of the safeguard is restricted by a self-locking mechanism. When the insulin pen is rotated into the needle stand, the self-locking mechanism opens automatically, and the safeguard freely displaces up and down to allow normal injection of insulin.

Description

Safety type insulin needle and method of using same

The present invention relates to the technical field of medical devices, and more particularly to a safe insulin needle and a method of using the same, and more particularly to a mechanical connection structure thereof.

Background technique

Comparative document 1, patent number: ZL200620038771. 0, application date: 2006. 01. 06, announcement number: CN2882649, patentee: Wenzhou Beipu Technology Co., Ltd., this case discloses "a needle for insulin injection" The content of the sovereign item is as follows: Mainly includes a needle holder, and a needle tube is arranged at the top of the needle holder, wherein the needle holder has an internal thread in the cavity.

It can be seen from the above existing insulin syringe that the conventional insulin syringe and the pen insulin syringe are exposed after the use of the needle tip, and the safety problem is undoubtedly exposed. Moreover, the structure of the existing insulin syringe also has defects at the same time, so it is necessary to The existing insulin syringe structure is further improved.

Summary of the invention

The object of the present invention is to provide a safe insulin needle with an automatic needle sheath structure, which can prevent the needle end from being exposed, effectively improve the safety performance of the product, and the needle sheath also has a self-locking structure. Further improved the safety factor of the product.

In order to achieve the above object, the technical solution of the present invention is: a safety insulin needle, comprising a needle seat, wherein a needle tube assembly base is arranged in the needle seat, and an insulin pen puncture needle is respectively arranged at an upper portion and a lower portion of the needle assembly base And the insulin injection needle, the tip of the two is reversed And the two are connected to each other, wherein: one end of the needle seat forms an insulin pen fitting portion, and the other end of the needle seat is provided with a self-locking seat, and one end of the self-locking seat is sleeved with the other end of the needle seat, A pusher is arranged in the lock seat, and one end of the pusher is located in the cavity of the needle seat, and penetrates the assembly base of the needle tube in the assembly part, and the other end of the pusher cylinder abuts against the self-locking piece at the inner wall of the inner cavity of the self-locking seat, and is self-locking The opening at the other end of the seat is connected at one end of the needle sheath, and the other end of the needle sheath is suspended, and the needle sheath is connected to the inner cavity of the needle hub through a spring.

A method for using a safe insulin needle, characterized in that the method of use is as follows: first, screw the end of the insulin pen into the insulin pen assembly portion, and when fully screwed in, the end portion of the insulin pen will press the upper end portion of the push tube. The oblique cut surface at the lower end of the push cylinder opens the free end of the self-locking piece to the outside, and the needle sheath can be displaced to the self-locking cavity when the external force acts, and the insulin injection needle can be exposed. When injecting, the needle sheath top When the skin is in, the insulin syringe is needled into the muscle, and the insulin syringe is completed. After the injection is completed, the insulin injection needle is pulled out, the needle sheath is reset under the action of the spring restoring force, and the insulin pen is pulled out, and the lower end of the self-locking piece is turned to the side. To form a restoring force, under the action of the oblique section, the push cylinder is pushed upward to realize the upward adjustment of the push cylinder. At this time, the needle sheath is again stuck at the end of the self-locking seat, and the up and down displacement cannot be achieved, ensuring that the needle does not Exposed.

The invention discloses a safety insulin needle, which adopts a built-in safety injection needle structure, and the insulin syringe needle is externally sleeved with an elastically stretchable sheath, and the self-locking mechanism is used to limit the sheath, when the insulin is rotated After entering the needle seat, the self-locking mechanism will open itself, and the sheath can be freely moved up and down to perform normal insulin injection. The overall design structure of the product is reasonable, the concept is clever, the operation is convenient, and it has good stability and practicability.

DRAWINGS Figure 1 is a schematic view of the structure of the present invention.

Figure 2 is a first use diagram of the present invention.

Figure 3 is a second use diagram of the present invention.

Figure 4 is a third use diagram of the present invention.

detailed description

The invention will now be further described with reference to the accompanying drawings.

The invention relates to a safety insulin needle, which comprises a needle holder 1 in which a needle tube assembly base 101 is arranged, and an insulin pen puncture needle 102 and an insulin injection needle are respectively arranged at an upper portion and a lower portion of the needle tube assembly base 101. 103, the tips of the two are oppositely arranged, and the two are connected to each other, which is different from the prior art in that: one end of the needle holder 1 forms an insulin pen fitting portion 104, and the insulin pen piercing needle 102 is located in the insulin pen fitting portion In the 104, the height of the needle tip is lower than the height of the insulin pen assembly portion 104, and the other end of the needle holder 1 is provided with a self-locking seat 2, and one end of the self-locking seat 2 is sleeved with the other end of the needle holder 1, and the self-locking seat 2 is The push cylinder 3 is disposed, and one end of the push cylinder 3 is located in the cavity of the needle seat 1 and penetrates the needle tube assembly base 101 in the assembly portion 104. The other end of the push cylinder 3 abuts against the inner wall of the inner cavity of the self-locking seat 2 The locking piece 201 has an opening at the other end of the locking seat 2 at one end of the needle sheath 4, and the other end of the needle sheath 4 is suspended, and the needle sheath 4 is connected to the inner cavity of the needle holder 1 by a spring 5.

In a specific implementation, an oblique cut surface 301 is formed at the outer wall of the other end of the push cylinder 3. In a specific implementation, at least two self-locking pieces 201 are disposed on the inner wall of the inner cavity of the self-locking seat 2, and the self-locking piece 201 is obliquely distributed. The upper end of the self-locking piece 201 is fixedly connected with the inner wall of the inner cavity of the self-locking seat 2. The lower end of the self-locking piece 201 is suspended, and the inner inclined surface of the self-locking piece 201 and the oblique cut surface 301 of the upper pushing cylinder 3 cooperate with each other. In a specific implementation, the distance between the two self-locking pieces 201 is smaller than the outer diameter of one end of the needle sheath 4 without being subjected to an external force.

In a specific implementation, an inner spiral 105 is formed at the inner wall of the inner cavity of the insulin pen fitting portion 104.

In a specific implementation, the self-locking seat 2 has a cylindrical shape, and an annular step 202 is formed at the inner wall of the inner cavity of the other end of the self-locking seat 2.

In a specific implementation, a reverse step 401 is formed at an outer wall of one end of the needle sheath 4 to cooperate with the annular step 202.

In a specific implementation, the spring 5 end is fixedly connected to the inner wall of the inner cavity of the needle sheath 4, the other end of the spring 5 is connected to the needle fitting base 101, and the insulin injection needle 103 is located at the center of the spring 5.

In a specific implementation, the tips of the insulin pen puncture needle 102 and the insulin injection needle 103 are disposed in opposite directions, and the two are connected to each other and have an integral structure, and are sealed and fixed to the needle hub 1 by glue.

In actual use, as shown in Figure 2, the insulin pen 6 is screwed into the insulin pen assembly. When fully screwed in, the end of the insulin pen will press down on the upper end of the pusher, and the oblique cut at the lower end of the pusher will be self-locking. The suspended end is opened to the outside, and the needle sheath can be displaced into the self-locking cavity when the external force acts, and the insulin injection needle can be exposed, as shown in Fig. 3, when the injection, the needle sheath is against the skin, insulin The syringe needle is inserted into the muscle, and the insulin syringe is completed. As shown in Fig. 4, after the injection is completed, the insulin injection needle is pulled out, and the needle sheath is reset under the action of the spring restoring force, and the insulin pen is self-locking. The lower end forms a restoring force laterally, and under the action of the oblique section, the push cylinder is pushed upward to realize the upward reset of the push cylinder. At this point, the needle sheath is again stuck at the end of the self-locking seat, and the upper and lower displacement cannot be achieved, ensuring that the needle is not exposed and safe operation is achieved.

The above is a further detailed description of the present invention in conjunction with the specific preferred embodiments. It is to be understood by those skilled in the art that the present invention may be construed as being limited to the scope of the present invention without departing from the spirit and scope of the invention.

Claims

claims

1. A safety insulin needle, which includes a needle seat (1). The needle seat (1) is provided with a needle tube assembly base (101). The upper and lower parts of the needle tube assembly base (101) are respectively provided with insulin pens. The tips of the puncture needle (102) and the insulin injection needle (103) are set in opposite directions, and the two are connected with each other, and are characterized in that: one end of the needle seat (1) forms an insulin pen assembly (104), The other end of the needle seat (1) is provided with a self-locking seat (2). The self-locking seat

One end of (2) is socketed with the other end of the needle seat (1). A push cylinder (3) is provided in the self-locking seat (2). One end of the push cylinder (3) is located in the cavity of the needle seat (1) and passes through it. The transparent needle tube assembly base (101) is located in the assembly part (104). The other end of the push tube (3) is against the self-locking piece (201) on the inner wall of the self-locking seat (2). The self-locking seat (2) The opening at the other end is connected to one end of the needle sheath (4), and the other end of the needle sheath (4) is suspended. The needle sheath (4) is connected to the inner cavity of the needle seat (1) through the spring (5).

2. A safety insulin needle according to claim 1, characterized in that: the outer wall of the other end of the push barrel (3) forms an oblique section (301).

3. A safe insulin needle according to claim 1, characterized in that: the inner wall of the inner cavity of the self-locking seat (2) is provided with at least two self-locking pieces (201). The self-locking piece (201) Distributed diagonally, the upper end of the self-locking piece (201) is fixedly connected to the inner wall of the inner cavity of the self-locking seat (2), the lower end of the self-locking piece (201) is suspended, and the inner slope of the self-locking piece (201) is connected to the upper push cylinder (3 ) of the oblique sections (301) cooperate with each other.

4. A safe insulin needle according to claim 4, characterized in that: the distance between the two self-locking pieces (201) is smaller than the needle sheath (4) without the action of external force. The outer diameter of one end.

5. A safety insulin needle according to claim 1, characterized in that: an inner spiral groove (105) is formed on the inner wall of the inner cavity of the insulin pen assembly part (104).

6. A safety insulin needle according to claim 1, characterized in that: the self-locking seat (2) is cylindrical, and an annular step (202) is formed on the inner wall of the inner cavity of the other end of the self-locking seat (2). .

7. A safe insulin needle according to claim 1, characterized in that: a reverse step (401) matching the annular step (202) is formed on the outer wall of one end of the needle sheath (4).

8. A safe insulin needle according to claim 1, characterized in that: one end of the spring (5) is fixedly connected to the inner wall of the inner cavity of the needle sheath (4), and the other end of the spring (5) is connected to the needle tube. The assembly base (101) is connected, and the insulin injection needle (103) is located at the center of the spring (5).

9. A safe insulin needle according to claim 1, characterized in that: the tips of the insulin pen puncture needle (102) and the insulin injection needle (103) are arranged in opposite directions, and the two are connected to each other and arranged in an opposite direction. One-piece structure.

10. A method of using a safe insulin needle, characterized in that: The method of use is as follows: first screw the end of the insulin pen into the assembly part of the insulin pen. When it is completely screwed in, the end of the insulin pen will push the upper end of the push barrel downward. Press, the oblique section at the lower end of the push cylinder pushes the suspended end of the self-locking piece outward, and the needle guard can be displaced into the cavity of the self-locking seat when an external force acts, and the insulin injection needle can be exposed. During injection, the needle guard Hold the cover against the skin, insert the insulin syringe needle into the muscle, and complete the insulin syringe. After the injection is completed, pull out the insulin injection needle. The needle guard is reset under the restoring force of the spring. Unscrew the insulin pen and form a restoring force laterally from the lower end of the locking piece. Under the action of the oblique section, the push cylinder is pushed upward to achieve upward reset of the push cylinder. At this time, the needle sheath is stuck at the end of the self-locking seat and cannot move up and down to ensure that the needle is not exposed.