CN213884569U

CN213884569U - Disposable puncture-preventing self-destruction vaccine syringe

Info

Publication number: CN213884569U
Application number: CN202022309363.7U
Authority: CN
Inventors: 赵平均; 张广林; 张兴武; 张彩丽; 高春联
Original assignee: Henan Shuguang Huizhikang Biotechnology Co ltd
Current assignee: Henan Shuguang Huizhikang Biotechnology Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-08-06
Anticipated expiration: 2030-10-16

Abstract

A disposable puncture-proof self-destruction vaccine injector comprises a needle tube (1), a puncture-proof sheath (2), a needle seat (3), a piston (5), a core bar (6), an outer sleeve (7), a head locking device (4) and a tail locking device (8); the needle tube (1) is inserted into the needle seat (3) for fixation, and the needle seat (3) is connected with the outer sleeve (7); the anti-acupuncture sheath (2) is of a lifting type and is connected with the needle base (3); the core rod (6) is wrapped by an outer sleeve (7); the piston (5) is fixed at the head of the core rod (6). The disposable self-destruction vaccine syringe capable of preventing acupuncture provided by the utility model has the advantages of simple structure, thorough self-destruction and convenient production.

Description

Disposable puncture-preventing self-destruction vaccine syringe

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a disposable self-destruction formula bacterin syringe of preventing acupuncture.

Background

At present, disposable anti-needle-prick vaccine syringes are widely used in the aspect of medicine injection, but the phenomenon of repeated use exists, so that various self-destruction vaccine syringes are developed successively. For example, the technical scheme disclosed in patent CN211188576U has a complicated self-locking structure and high production cost; according to the technical scheme disclosed by the patent CN201939822U, the self-destruction device is only provided with the non-return elastic sheet and the wedge-shaped convex block on the inner wall of the upper end of the pipe body and the piston rod, and the self-destruction structure is too simple and cannot be completely self-destroyed.

SUMMERY OF THE UTILITY MODEL

Most of the existing self-destruction type vaccine syringes have complicated self-destruction structures, incomplete self-destruction, insufficient protection for medical care personnel, easy puncture by a needle head and high production cost, so that more perfect needle-prick prevention self-destruction type vaccine syringes are needed. In order to solve the problems, the utility model provides a disposable anti-acupuncture self-destruction vaccine injector which has simple structure, thorough self-destruction and convenient production.

The purpose of the utility model is realized with the following mode:

a disposable self-destruction vaccine syringe capable of preventing needle-stick is characterized in that: comprises a needle tube (1), a puncture-proof sheath (2), a needle seat (3), a piston (5), a core bar (6), an outer sleeve (7), a head locking device (4) and a tail locking device (8); the needle tube (1) is inserted into the needle seat (3) for fixation, and the needle seat (3) is connected with the outer sleeve (7); the anti-acupuncture sheath (2) is of a lifting type and is connected with the needle base (3); the core rod (6) is wrapped by an outer sleeve (7); the piston (5) is fixed at the head of the core rod (6); the head locking device (4) comprises a head penetrating hole (d) formed in the outer sleeve (7) and a positioning ring (e) arranged on the core rod (6), the tail locking device (8) comprises a tail penetrating hole (a) formed in the outer sleeve (7) and two elastic side wings (b) formed in the core rod (6), and the two elastic side wings (b) are symmetrically distributed.

Both sides of the tail part of the outer sleeve (7) are provided with extended side wings (9); the tail of the outer sleeve (7) extends to form a cavity (10), and the diameter of the cavity (10) at the tail of the outer sleeve (7) is larger than that of the middle part of the outer sleeve (7).

The head of the core rod (6) is provided with a convex ring (c).

The head penetrating hole (d) and the tail penetrating hole (a) on the outer sleeve (7) are in a circular truncated cone shape taking the core rod as an axis, and the upper bottom surface of the circular truncated cone faces the needle head; when the elastic side wing (b) on the core bar (6) is separated from the core bar (6), the whole width of the tail part is larger than the diameter of the upper bottom surface of the through hole (a), and when the elastic side wing (b) is contacted with the core bar (6), the whole width of the tail part is smaller than the diameter of the upper bottom surface of the through hole (a).

The core rod (6) and the outer sleeve (7) are both made of plastics.

Compared with the prior art, the utility model discloses can be after preventing that acupuncture vaccine syringe has injected the medicine, syringe needle portion has prevents acupuncture sheath, and the holding ring and the head of core bar head wear the hole cooperation from locking, and the elasticity flank and the afterbody of core bar afterbody wear the hole block auto-lock, reach dual auto-lock efficiency, and the auto-lock is thorough, makes and prevents that acupuncture vaccine syringe can not reuse, and preparation simple process, low cost.

Drawings

Fig. 1 is a schematic structural diagram of a disposable needle-prick-proof self-destruction vaccine syringe.

Fig. 2 is an enlarged view of the locking device of the head of the disposable needle-prick prevention self-destruction vaccine syringe.

Reference numerals: 1. a needle tube; 2. a needle-prick prevention sheath; 3. a needle seat; 4. a head locking device; 5. a piston; 6. a core bar; 7. a jacket; 8. a tail locking device; 9. a side wing; 10. a cavity; a. a tail through hole; b. an elastic side flap; c. a raised circular ring; d. a head piercing hole; e. a retaining ring.

Detailed Description

As shown in fig. 1, a disposable anti-acupuncture self-destruction vaccine injector comprises a needle tube 1, an anti-acupuncture sheath 2, a needle base 3, a piston 5, a core bar 6, an outer sleeve 7, a head locking device 4 and a tail locking device 8; the needle tube 1 is inserted into the needle seat 3 for fixation, and the needle seat 3 is connected with the outer sleeve 7; the anti-acupuncture sheath 2 is of a lifting type and is connected with the needle base 3; the core bar 6 is wrapped by an outer sleeve 7; the piston 5 is fixed at the head of the core rod 6; the head locking device 4 comprises a head penetrating hole d formed in the outer sleeve 7 and a positioning ring e formed in the core rod 6, the tail locking device 8 comprises a tail penetrating hole a formed in the outer sleeve 7 and two elastic side wings b formed in the core rod 6, and the two elastic side wings b are symmetrically distributed.

Two sides of the tail of the outer sleeve 7 are provided with extended side wings 9, and after the forefinger and the middle finger support against the side wings 9, the thumb is used for pressing the tail of the core rod 6, so that more labor is saved during injection; the tail part of the outer sleeve forms a cavity 10, the diameter of the cavity 10 at the tail part of the outer sleeve is larger than that of the middle part of the outer sleeve, so that the core rod 6 can generate larger resistance when being pulled out and is difficult to pull out, the injector is prevented from being repeatedly used, and the purpose of self-destruction is achieved.

The head of the core rod 6 is provided with a convex ring c which can prevent the core rod from being withdrawn from the tail of the outer sleeve carelessly when not in use.

The through hole a on the outer sleeve 7 is in a circular truncated cone shape taking the core rod 6 as an axis, and the upper bottom surface of the circular truncated cone faces the needle head; the head of the elastic side wing b is connected with the core rod 6, the tail of the elastic side wing b is a pressable side wing separated from the core rod 6, the whole width of the tail when the elastic side wing b contacts with the core rod 6 is smaller than the diameter of the upper bottom surface of the through hole a, after the elastic side wing b enters the cavity 10 along with the core rod 6, the elastic side wing b is separated from the core rod 6, the whole width of the tail is larger than the diameter of the upper bottom surface of the through hole a, the elastic side wing b is clamped with the through hole a, the through hole a prevents the elastic side wing b from moving out of the cavity 10, and the core rod 6 cannot be pulled out, so that the purpose of self-destruction is achieved. The circular truncated cone is a geometric body surrounded by a curved surface formed by rotating the other sides by taking a straight line where the waist of the right trapezoid perpendicular to the bottom side is positioned as a rotating shaft. The length of the waist of the trapezoid on the shaft of the circular truncated cone is called the height of the circular truncated cone, and the height of the circular truncated cone is also the distance between the upper bottom surface and the lower bottom surface. A truncated cone may also be considered the portion of a cone that is sectioned by two perpendicular planes to its axis, and may therefore also be referred to as a "truncated cone".

As shown in the enlarged view of the head locking device 4 in fig. 2, a circular truncated cone-shaped annular protruding positioning ring e taking the central line of the core rod 6 as a rotating shaft is arranged at the front end of the piston 5, a circular truncated cone-shaped through positioning hole d taking the central line of the core rod 6 as a shaft is arranged at one side of the needle base 3 close to the core rod 6, and the positioning ring e and the through positioning hole d are the same in shape; the diameter of the upper bottom surface of the circular truncated cone is smaller than that of the lower bottom surface, and the upper bottom surface of the circular truncated cone faces the needle head; the through hole d and the positioning ring e are mutually matched, and the structure ensures that the core rod 6 is easily pushed in during working and is not easily pulled out after use, thereby achieving the effect of double self-locking and thorough self-destruction.

The core rod 6 and the outer sleeve 7 are both made of plastic, and most of the plastic has the advantages of strong corrosion resistance, no reaction with acid and alkali, low manufacturing cost, durability, water resistance, light weight, easiness in molding into different shapes, good insulator and the like. Therefore, the utility model has simple preparation process and low price.

The working process of the utility model is as follows: after the anti-needle-prick vaccine injector injects the medicine, the anti-needle-prick sheath locks the needle tube and does not expose, the positioning ring of the core rod head locking device is matched with the head penetrating hole for self-locking, the elastic side wing of the core rod tail locking device is clamped with the tail penetrating hole for self-locking, the double self-locking effect is achieved, the self-locking is thorough, and the anti-needle-prick vaccine injector can not be used any more.

The utility model discloses self-destruction is thorough, preparation simple process, low cost.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims

1. A disposable self-destruction vaccine syringe capable of preventing needle-stick is characterized in that: comprises a needle tube (1), a puncture-proof sheath (2), a needle seat (3), a piston (5), a core bar (6), an outer sleeve (7), a head locking device (4) and a tail locking device (8); the needle tube (1) is inserted into the needle seat (3) for fixation, and the needle seat (3) is connected with the outer sleeve (7); the anti-acupuncture sheath (2) is of a lifting type and is connected with the needle base (3); the core rod (6) is wrapped by an outer sleeve (7); the piston (5) is fixed at the head of the core rod (6); the head locking device (4) comprises a head penetrating hole (d) formed in the outer sleeve (7) and a positioning ring (e) arranged on the core rod (6), the tail locking device (8) comprises a tail penetrating hole (a) formed in the outer sleeve (7) and two elastic side wings (b) formed in the core rod (6), and the two elastic side wings (b) are symmetrically distributed.

2. The disposable needle-stick resistant self-destruct vaccine syringe of claim 1, wherein: both sides of the tail part of the outer sleeve (7) are provided with extended side wings (9); the tail of the outer sleeve (7) extends to form a cavity (10), and the diameter of the cavity (10) at the tail of the outer sleeve (7) is larger than that of the middle part of the outer sleeve (7).

3. The disposable needle-stick resistant self-destruct vaccine syringe of claim 1, wherein: the head of the core rod (6) is provided with a convex ring (c).

4. The disposable needle-stick-proof self-destruct vaccine syringe according to claim 1 or 2, characterized in that: the head penetrating hole (d) and the tail penetrating hole (a) on the outer sleeve (7) are in a circular truncated cone shape taking the core rod as an axis, and the upper bottom surface of the circular truncated cone faces the needle head; when the elastic side wing (b) on the core bar (6) is separated from the core bar (6), the whole width of the tail part is larger than the diameter of the upper bottom surface of the through hole (a), and when the elastic side wing (b) is contacted with the core bar (6), the whole width of the tail part is smaller than the diameter of the upper bottom surface of the through hole (a).

5. The disposable needle-stick resistant self-destruct vaccine syringe of claim 1, wherein: the core rod (6) and the outer sleeve (7) are both made of plastics.