CN201220022Y

CN201220022Y - Closed type self-destroyed type disposable syringe

Info

Publication number: CN201220022Y
Application number: CNU2008201283900U
Authority: CN
Inventors: 骆星宇; 江正兵
Original assignee: 骆星宇; 江正兵
Current assignee: Luo Xing Yu
Priority date: 2008-07-14
Filing date: 2008-07-14
Publication date: 2009-04-15
Anticipated expiration: 2018-07-14

Abstract

The utility model relates to a sealed self-damaging type disposable injector which consists of a needle rod, a needle cylinder, a needle head seat, a needle and a needle sleeve. The needle rod is installed in the needle cylinder, the needle seat is installed on the needle cylinder, the needle is installed in the needle head seat, the needle sleeve is sleeved on the needle head sleeve, a needle rod head is arranged on the needle rod, and a needle seal and a needle seat pull hole are arranged on the needle rod head. The sealed self-destroying type disposable injector adopts the form that an elastic sealing structure is arranged on the needle rod head of the needle rod to realize the good sealing between the needle rod and the needle cylinder, at the same time, the disposable injector can be used for one time and then self damaged to achieve the purpose of medicine-taking safety of human, and the problems that the leakage is easy to occur between the needle rod and the needle cylinder of the prior disposable injector and the medicine-taking of human is not safe can be completely solved. The utility model fills a gap of the field, and has high creativeness, practicability and broad market prospect.

Description

Closed type re-use preventing once-used syringe

Technical field

This utility model relates to the widely used disposable syringe of a kind of medical industry, especially relates to a kind of closed type re-use preventing once-used syringe, belongs to the medical product field.

Background technology

A large amount of disposable syringes that extensively using in the present daily medical treatment; by: shank, syringe, needle holder, syringe needle, pinhead sleeve are formed; be a problem that does not have fine solution at its shank of disposable syringe that uses and the sealing between the syringe at present always, produce liquid leakage through regular meeting between shank and the syringe.

Mainly contain two kinds of versions at the disposable syringe that uses at present, promptly mainly be that shank head on the shank mainly contains two kinds of versions, a kind of structure is to set up the rubber gasket of a circle on the shank head of shank, be used for the sealing between shank and the syringe, though sealing effectiveness is better relatively, but direct and medicinal liquid contact portion is an elastomeric material, safety to medication is a problem, there is not self-destroying function yet, can't realize once using the purpose of back with regard to self-destruction, disposable syringe is just illegally utilized by drug addict and other staff easily;

Another kind of structure is the shank header structure amplification with shank, it is enlarged diameter, to produce sealing effectiveness, though do not use elastomeric material, but because shank head and shank are to use commaterial, material is harder, can produce bigger frictional force between shank head and the syringe, sealing effectiveness is also undesirable simultaneously, and self-destroying function is also relatively poor.

Summary of the invention

This utility model provides a kind of closed type re-use preventing once-used syringe of novelty, employing is provided with the form of the shank head sealing 121 of elastic sealing structure on the shank head 12 of shank 1, realize the excellent sealing between shank 1 and the syringe 2, can once use simultaneously the back with regard to self-destruction again, reach the purpose of human body drug safety, solved between existing disposable syringe shank and the syringe leak easily and once use after can't self-destruction to the unsafe problem of human body medication.

The technical solution of the utility model is:

Closed type re-use preventing once-used syringe, comprise: shank 1, syringe 2, needle holder 3, syringe needle 4 and pinhead sleeve 5, shank 1 is installed in the syringe 2, needle holder 3 is installed on the syringe 2, syringe needle 4 is installed in the needle holder 3, and pinhead sleeve 5 is placed on the syringe needle 4, and shank 1 is made of push rod 11 and shank head 12, shank 1 is provided with shank head 12, and shank head 12 is provided with sealing 121 of shank head and needle holder pull-out-hole 122.

Shank head 12 is cylindric plunger formula structure, form by two part-structures up and down, be provided with sealing 121 of shank head and needle holder pull-out-hole 122 in the last structure division of shank head 12, be provided with all around and strengthen vertical floor, be provided with horizontal structure in the following structure division of shank head 12 and strengthen plectane, the following structure division and the push rod 11 of shank head 12 link.

Shank head sealing 121 is the bending elastic structure, also can be a plurality of bending elastic structures, be arranged at shank head 12 around, be the continuous annular structure, openings at one side wherein, also opening not, another side connects with shank head 12, shank head sealing 121 also can be split type assembly structure on the shank head 12 and be monolithic construction between shank head 12 bodies.

Needle holder pull-out-hole 122 is positioned at the middle part of shank head 12, is made up of an interior big outer young waiter in a wineshop or an inn cylindrical hole, and the needle holder of needle holder 3 is fallen pawl 31 and can be entered an interior outer young waiter in a wineshop or an inn cylindrical hole greatly, and needle holder is fallen the pawl of pawl 31 and can be fastened the inner edge of small cylindrical opening.

Shank head 12 is a monolithic construction with push rod 11, also can be split type assembly structure.

Shank head 12 is the same material manufacturing with push rod 11, and shank head 12 also can adopt material manufacture not of the same race with push rod 11.

Adopt closed type re-use preventing once-used syringe of the present utility model, can thoroughly solve leak easily between existing disposable syringe shank and the syringe and once use after can't self-destruction to the unsafe problem of human body medication, filled up the blank in this field, have very strong creativeness and practicality, thereby market prospect is boundless.

Description of drawings

Fig. 1: the assembly structure sketch map that is this utility model closed type re-use preventing once-used syringe;

Fig. 2: the shank structural representation that is this utility model closed type re-use preventing once-used syringe;

Fig. 3: the syringe cylinder structure sketch map that is this utility model closed type re-use preventing once-used syringe;

Fig. 4: the needle holder structural representation that is this utility model closed type re-use preventing once-used syringe;

Fig. 5: the self-destruction fundamental diagram one that is this utility model closed type re-use preventing once-used syringe;

Fig. 6: the self-destruction fundamental diagram two that is this utility model closed type re-use preventing once-used syringe.

Among Fig. 1: 1, shank 2, syringe 3, needle holder 4, syringe needle 5, pinhead sleeve

Among Fig. 2: 11, push rod 12, shank head

121, shank head sealing 122, needle holder pull-out-hole

Among Fig. 3: 2, syringe 3, needle holder 4, syringe needle

Among Fig. 4: 3, needle holder 31, needle holder are fallen pawl

The specific embodiment

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6.

Closed type re-use preventing once-used syringe, by: shank 1, syringe 2, needle holder 3, syringe needle 4, pinhead sleeve 5 are formed.

Shank 1 by: push rod 11 and shank head 12 are constituted.

Shank head 12 is provided with: sealing 121 of shank head and needle holder pull-out-hole 122 structures.

The structure of shank 1 and effect, shank 1 is made up of push rod 11 and shank head 12 two parts, pusher structure in the structure of push rod 11 and the present widely used disposable syringe is similar, shank head 12 is cylindric plunger formula structure, form by two part-structures up and down, be provided with sealing 121 of shank head and needle holder pull-out-hole 122 in the last structure division of shank head 12, be provided with all around and strengthen vertical floor, be provided with horizontal structure in the following structure division of shank head 12 and strengthen plectane, the following structure division and the push rod 11 of shank head 12 link, shank head sealing 121 is the bending elastic structure, also can be a plurality of bending elastic structures, be arranged at shank head 12 around, be the continuous annular structure, openings at one side wherein, also opening not, opening with contacted that end opening of medicinal liquid be good, another side connects with shank head 12, between sealing 121 of shank head and the shank head 12 is the monoblock type draw bail, it also can be split type assembly structure, needle holder pull-out-hole 122 is positioned at the middle part of shank head 12, form by an interior big outer young waiter in a wineshop or an inn cylindrical hole, the main effect of shank 1 is played when shank 1 is pulled out exactly medicinal liquid is sucked in the syringe, plays pushing in the human body medicinal liquid or release constantly in shank 1 pushing.

The structure and the effect of syringe 2, needle holder 3, syringe needle 4, pinhead sleeve 5, similar with present widely used disposable syringe.

Closed type re-use preventing once-used syringe, shank 1 is installed in the syringe 2, needle holder 3 is installed on the syringe 2, syringe needle 4 is installed in the needle holder 3, pinhead sleeve 5 is placed on the syringe needle 4, shank 1 is made of push rod 11 and shank head 12, and shank 1 is provided with shank head 12, and shank head 12 is provided with sealing 121 of shank head and needle holder pull-out-hole 122.

Syringe needle 4 tightly is installed on the needle holder 3, the needle holder 3 that will have syringe needle 4 is installed on the aperture of syringe 2, and to accomplish sealing and fixing between syringe 2 and the needle holder 3, pinhead sleeve 5 is placed on the syringe needle 4, pinhead sleeve 5 is stuck on the needle holder 3, then shank 1 is packed in the cylindrical shell of syringe 2, if the shank head on the shank 1 12 is split type assembly structure with push rod 11, then should at first shank head 12 be mounted on the push rod 11, and then shank 1 packed in the cylindrical shell of syringe 2, so just be assembled into a complete closed type re-use preventing once-used syringe, then syringe carried out the sterilizing packing.Be noted that, the disposable syringe that newly is assembled into, shank head 12 on the shank 1 must leave the cylindrical shell bottom certain distance of syringe 2, as shown in Figure 1, be that shank head 12 on the shank 1 must leave needle holder 3 certain distances on the syringe 2, the cylindrical shell bottom of syringe 2 must keep one section space, shank head 12 on the shank 1 can not be shifted the end onto, otherwise when syringe will use, when shank 1 pulls out will suck medicinal liquid the time, needle holder 3 and syringe needle 4 will be pulled out, directly self-destruction and can't using causes waste.

Have only when closed type re-use preventing once-used syringe is all released medicinal liquid when having an injection, just can shift shank 1 onto the end, as shown in Figure 5, the needle holder of needle holder 3 fall pawl 31 can enter in a big outer young waiter in a wineshop or an inn cylindrical hole, needle holder is fallen the pawl that falls of pawl 31 and can be fastened the inner edge of small cylindrical opening, have an injection simultaneously finish after, the lower needle bar 1 of also will pulling back, making shank head 12 on the shank 1 fall the pawl that falls of pawl 31 by needle holder pulls out needle holder 3 and syringe needle 4, as shown in Figure 6, the purpose that can't use with regard to self-destruction after realizing once using prevents that disposable syringe from illegally being utilized by drug addict and other staff.

Claims

1, a kind of closed type re-use preventing once-used syringe, comprise: shank (1), syringe (2), needle holder (3), syringe needle (4) and pinhead sleeve (5), shank (1) is installed in the syringe (2), needle holder (3) is installed on the syringe (2), syringe needle (4) is installed in the needle holder (3), pinhead sleeve (5) is placed on the syringe needle (4), it is characterized in that: shank (1) is made of push rod (11) and shank head (12), shank (1) is provided with shank head (12), and shank head (12) is provided with the sealing of shank head (121) and needle holder pull-out-hole (122).

2, closed type re-use preventing once-used syringe according to claim 1, it is characterized in that: shank head (12) is cylindric plunger formula structure, form by two part-structures up and down, be provided with the sealing of shank head (121) and needle holder pull-out-hole (122) in the last structure division of shank head (12), be provided with all around and strengthen vertical floor, be provided with horizontal structure in the following structure division of shank head (12) and strengthen plectane, the following structure division of shank head (12) and push rod (11) link.

3, closed type re-use preventing once-used syringe according to claim 1, it is characterized in that: shank head sealing (121) is the bending elastic structure, also can be a plurality of bending elastic structures, be arranged at shank head (12) around, be the continuous annular structure, openings at one side wherein, also opening not, another side connects with shank head (12), shank head sealing (121) is a monolithic construction on shank head (12) and between shank head (12) body, also can be split type assembly structure.

4, closed type re-use preventing once-used syringe according to claim 1, it is characterized in that: needle holder pull-out-hole (122) is positioned at the middle part of shank head (12), form by an interior big outer young waiter in a wineshop or an inn cylindrical hole, the needle holder of needle holder (3) fall pawl (31) can enter in a big outer young waiter in a wineshop or an inn cylindrical hole, needle holder is fallen the pawl of pawl (31) and can be fastened the inner edge of small cylindrical opening.

5, closed type re-use preventing once-used syringe according to claim 1 is characterized in that: shank head (12) is a monolithic construction with push rod (11), also can be split type assembly structure.

6, closed type re-use preventing once-used syringe according to claim 1 is characterized in that: shank head (12) is the same material manufacturing with push rod (11), and shank head (12) also can adopt material manufacture not of the same race with push rod (11).