CN205460212U

CN205460212U - Safe injector

Info

Publication number: CN205460212U
Application number: CN201620016756.XU
Authority: CN
Inventors: 吕文进
Original assignee: Sincere Industrial Co Ltd
Current assignee: Sincere Industrial Co Ltd
Priority date: 2016-01-08
Filing date: 2016-01-08
Publication date: 2016-08-17
Anticipated expiration: 2026-01-08

Abstract

The utility model relates to a safe injector includes a cylinder, has a stack shell, an appearance room, a dress seat hole, a cassette groove, a needle file has a seat body and installs in the dress seat hole of this cylinder, a pinhole, and a raker, an interlock variant part is connected in this raker, and one calorie of section of thick bamboo portion connects and receives its interlock and only can block in the cassette groove of this cylinder in this interlock variant part, pole stopper has a pole body to and one insert and collude kong ke and cup joint the raker of this needle file and compress card section of thick bamboo portion that this interlock variant part elastic deformation made this needle file and only do not block in the cassette groove of this cylinder, but should plug in the raker that colludes hole this needle file of trip and make and move this needle file. Therefore, the utility model discloses a but safe injector strong fix needle file, the convenient needle file of pulling back fast to effectively reduce remaining of liquid medicine.

Description

Safety injector

Technical field

This utility model is relevant with medical apparatus, particularly relates to a kind of safety injector.

Background technology

Known safety injector, such as U.S.'s US20060106339 publication, it still has the fixing of needle stand and pulls back Uncertain, and the problem that liquor residue amount is more.

Therefore, the shortcoming of described known safe syringe still haves much room for improvement.

Summary of the invention

For the problems referred to above, main purpose of the present utility model is to provide a kind of safety injector, and it can consolidate fixed Position needle stand, fast and easy is pulled back needle stand, and is effectively reduced the residual of medicinal liquid.

For reaching above-mentioned purpose, a kind of safety injector provided by the utility model, it is characterised in that include: One syringe 1, has a stack shell 11, a room 12, a dress bore 13, a basal groove 14；One needle stand 20, tool A body 21, described seat body 21 is had to be installed in the dress bore 13 of described syringe 1, a pin hole 22, a raker 24, One interlocks variant part 25 is connected to described raker 24, and a card cylinder portion 26 is connected to described gearing variant part 25 by it Interlock and can be locked to the basal groove 14 of described syringe 1；One bar plug 3, has a shaft 31, and one inserts hook hole 41 rakers 24 that can be socketed described needle stand 20 also compress described gearing variant part 25 elastic deformation and make described needle stand 20 Card cylinder portion 26 be not locked to the basal groove 14 of described syringe 1, described slotting hook hole 41 can needle stand 20 described in snap fit Raker 24 make mobile described needle stand 20.

In above-mentioned the technical solution of the utility model, described needle stand 20 has an alcove 27 and communicates described pin hole 22 With gearing variant part 25.

Described needle stand 20 has a guide face 212 and is connected on described alcove 27.

Described needle stand 20 has one and inside contracts the corresponding described gearing variant part 25 in face 211.

Described needle stand 20 centrage is less than described needle stand 20 centrage to even to vertical dimension L1 of raker 24 outer rim Vertical dimension L2 of dynamic deformation portion 25 outer rim.

Described card cylinder portion 26 extends a part of length and is connected with described gearing variant part 25.

Also comprise a sealing ring R, described sealing ring R to be located between described syringe 1 and needle stand 20.

Described syringe 1 has a main cylinder 10 and a protheca 50 is socketed on described main cylinder 10.

Also comprise a sealing ring R, described sealing ring R to be located between described protheca 50 and the seat body 21 of needle stand 20.

Described syringe 1 has a counterbore 15, and described needle stand 20 has seating shoulder 23 cooperation and is positioned described syringe 1 Counterbore 15.

Use technique scheme, safety injector provided by the utility model its really can strong fix needle stand, Fast and easy is pulled back needle stand, and effectively reduces the residual of medicinal liquid.

Accompanying drawing explanation

Fig. 1 is the axonometric chart of this utility model one preferred embodiment；

Fig. 2 is a mode of operation sectional view of this utility model one preferred embodiment；

Fig. 3 is another mode of operation sectional view of this utility model one preferred embodiment；

Fig. 4 is the axonometric chart of this utility model one preferred embodiment needle stand；

Fig. 5 is the axonometric chart of another preferred embodiment of this utility model；

Fig. 6 is a mode of operation sectional view of another preferred embodiment of this utility model；

Fig. 7 is another mode of operation sectional view of another preferred embodiment of this utility model；

Fig. 8 is the axonometric chart of another preferred embodiment needle stand of this utility model；

Fig. 9 is the axonometric chart of the another preferred embodiment of this utility model；

Figure 10 is a mode of operation sectional view of the another preferred embodiment of this utility model；

Figure 11 is another mode of operation sectional view of the another preferred embodiment of this utility model；

Figure 12 is the axonometric chart of this utility model another preferred embodiment needle stand；

Figure 13 is the axonometric chart of this utility model another embodiment；

Figure 14 is a mode of operation sectional view of this utility model another embodiment；

Figure 15 is another mode of operation sectional view of this utility model another embodiment；

Figure 16 is the axonometric chart of this utility model another embodiment needle stand.

Detailed description of the invention

Now lift following example and combine accompanying drawing structure of the present utility model and effect are described in detail.

First applicant illustrates at this, interested party's tropism such as inside and outside, upper and lower of indication in description in the whole text Adjective, on the basis of being all the direction in this utility model is graphic.

Graphic by enclosed by cited embodiment cooperation below, describe technology contents of the present utility model in detail And feature, wherein:

As shown in Figures 1 to 4, the safety injector of this utility model one preferred embodiment, include:

In the present embodiment, main cylinder 10 individually i.e. may make up a syringe 1；I.e., in the broadest sense, this utility model peace Full syringe includes a syringe 1, and syringe 1 has a main cylinder 10.

Main cylinder 10 has a stack shell 11, and a room 12 connects a dress bore 13, and a basal groove 14 is positioned at dress bore The inner edge of 13, a counterbore 15 is between room 12 and basal groove 14.

One needle stand 20, has a body 21, and seat body 21 is installed in the dress bore 13 of main cylinder 10, a pin hole 22, One seating shoulder 23 coordinates the counterbore 15 being positioned syringe 1, and its shaft of raker 24 preferably tapers slightly, and one interlocks change Shape portion 25 is connected to raker 24 in convex lamellar, and a card cylinder portion 26 is connected to interlock variant part 25 by it even Move and can be locked to the basal groove 14 of syringe 1.

Needle stand 20 also has one and inside contracts face 211 corresponding matching gearing variant part 25；That is, seat body 21 and/or raker Formed at 24 corresponding gearing variant parts 25 and slightly become the surface eliminated, interlock the more deformation space of variant part 25 to provide.

Wherein, needle stand 20 also has an alcove 27 and opens in pin hole 22 and interlock between variant part 25, needle stand 20 Also there is an annular groove 28 be available for installing between a sealing ring R sealing syringe 1 and needle stand 20.

Needle stand 20 also has a guide face 212 and is connected on alcove 27, and guide face 212 is also connected on the face of inside contracting 211, It can make medicinal liquid be easier to flow to alcove 27.

Additionally, the other end in card cylinder portion 26 is also attached to its body 21.

In the present embodiment, needle stand 20 directly installs a syringe needle N at its pin hole 22.

In the present embodiment, vertical dimension L1 of needle stand 20 centrage to raker 24 outer rim is less than needle stand 20 centrage To vertical dimension L2 interlocking variant part 25 outer rim.

One bar plug 3, has a push rod 30 and has a shaft 31, and a blocking 40 is arranged in the shaft of push rod 30 31。

Blocking 40 has a slotting hole 41 that hooks and can be socketed the raker 24 of needle stand 20 and compress gearing variant part 25 elasticity Deformation makes the card cylinder portion 26 of needle stand 20 not be locked to the basal groove 14 of syringe 1, inserts and hooks hole 41 cocker bearded needle seat 20 Raker 24 make mobile needle stand 20.

The card cylinder portion 26 of needle stand 20 can effectively engage with the basal groove 14 of syringe 1.

And become with interlocking when bar plug 3 pushes against forward the raker 24 making the slotting hook hole 41 of its blocking 40 be inserted in needle stand 20 During shape portion 25, i.e. the card cylinder portion 26 of controlling needle 20 leaves the basal groove 14 of syringe 1 and no longer engages, i.e. Can pull back smoothly.Space when interlocking variant part 25 elastic deformation and between seat body 21 and raker 24 diminishes, then may be used Reduce liquor residue therebetween.

Finally, needle stand 20 and syringe needle N also interlock the variant part 25 slotting hook hole 41 with bar plug 3 because of needle stand 20 Matching relationship and crooked to side, needle stand 20 and syringe needle N are just not easy to be pushed out syringe 1 again.

Thus, embodiment i.e. reaches the purpose of this utility model.

And emphasis of the present utility model is more, coordinated with alcove 27 by the gearing variant part 25 of needle stand 20, Its design is also effectively reduced liquid medicine injection residual quantity.

As shown in Fig. 5 to Fig. 8, this utility model provides the safety injector of another kind of embodiment, itself and aforementioned reality Executing example roughly the same, main difference is:

Needle stand 20 also has one and meets pin portion 29 and be formed at leading portion.

Syringe needle N is located at a fitting N1, and what fitting N1 was arranged in needle stand 20 again meets pin portion 29.

Thus, the present embodiment equally reaches the purpose of this utility model.

As shown in Fig. 9 to Figure 12, for the safety injector of another preferred embodiment of this utility model, it is with aforementioned Embodiment is roughly the same, and its main difference is:

Syringe 1 has a main cylinder 10 and a protheca 50 is sealably socketed on main cylinder 10 and is collectively forming dress bore 13, Sealing ring R is located between the seat body 21 of protheca 50 and needle stand 20.

That is, main cylinder 10 also has a protheca 50 and is socketed on main cylinder 10 front end, basal groove 14 and counterbore 15 in this example It is formed at main cylinder 10, the most also can change into being formed at protheca 50.Utilizing two Component compositions to form, it can make pin The manufacture of cylinder 1 is the simplest, and can increase its type of service.

Thus, the present embodiment equally reaches the purpose of this utility model.

As shown in Figure 13 to Figure 16, for the safety injector of another preferred embodiment of this utility model, it is with aforementioned Embodiment is roughly the same, and its main difference is:

Needle stand 20 has large-size and separately forms an outer cylindrical portion for installing syringe needle N.

The extensible a part of length in card cylinder portion 26 is connected with gearing variant part 25 again.Therefore, remain to blocking 40 Slotting hook hole 41 compress gearing variant part 25 elastic deformation of needle stand 20, and with drive the engaging of card cylinder portion 26 with not Engaging.

Thus, the present embodiment equally reaches the purpose of this utility model.

This utility model push rod 30 and blocking 40 can be outside combination, or are alternatively one.

This utility model sealing ring R except the most aforementioned for individual member in addition to, it is alternatively integrally formed in syringe 1 Or it is integrally formed in needle stand 20.

Above-described any embodiment all can use in one or more mutual collocation, all can reach this utility model Purpose.

In sum, safety injector provided by the utility model its really can strong fix needle stand, fast and easy Pull back needle stand, and effectively reduce the residual of medicinal liquid, therefore actually reach the purpose of this utility model.

Claims

1. a safety injector, it is characterised in that include:

One syringe (1), has a stack shell (11), a room (12), dress bore (13), a basal groove (14)；

One needle stand (20), has a body (21), and described seat body (21) is installed in the dress bore (13) of described syringe (1), and one Pin hole (22), a raker (24), one interlocks variant part (25) is connected to described raker (24), and a card cylinder portion (26) is connected to institute State and interlock the basal groove (14) that variant part (25) is interlocked by it and can be locked to described syringe (1)；

One bar plug (3), has a shaft (31), and one insert hook hole (41) can be socketed described needle stand (20) raker (24) and Compressing described gearing variant part (25) elastic deformation makes the card cylinder portion (26) of described needle stand (20) not be locked to described syringe (1) Basal groove (14), described slotting hook hole (41) raker (24) of needle stand (20) described in snap fit can make mobile described needle stand (20).

2. safety injector as claimed in claim 1, it is characterised in that: described needle stand (20) has an alcove (27) Communicate described pin hole (22) and interlock variant part (25).

3. safety injector as claimed in claim 2, it is characterised in that: described needle stand (20) has a guide face (212) It is connected on described alcove (27).

4. safety injector as claimed in claim 1, it is characterised in that: described needle stand (20) has one and inside contracts face (211) Corresponding described gearing variant part (25).

5. safety injector as claimed in claim 1, it is characterised in that: described needle stand (20) centrage to raker (24) The vertical dimension (L1) of outer rim is less than the vertical dimension (L2) of described needle stand (20) centrage to gearing variant part (25) outer rim.

6. safety injector as claimed in claim 1, it is characterised in that: it is long that described card cylinder portion (26) extends a part Degree is connected with described gearing variant part (25).

7. safety injector as claimed in claim 1, it is characterised in that: also comprise a sealing ring (R), described close Seal ring (R) is located between described syringe (1) and needle stand (20).

8. safety injector as claimed in claim 1, it is characterised in that: described syringe (1) has a main cylinder (10) And one protheca (50) be socketed on described main cylinder (10).

9. safety injector as claimed in claim 8, it is characterised in that: also comprise a sealing ring (R), described close Seal ring (R) is located between the seat body (21) of described protheca (50) and needle stand (20).

10. safety injector as claimed in claim 1, it is characterised in that: described syringe (1) has a counterbore (15), Described needle stand (20) has a seating shoulder (23) and coordinates the counterbore (15) being positioned described syringe (1).