CN205073426U - Zero type of disposable circle plug syringe - Google Patents

Abstract

The utility model discloses a zero type of disposable circle plug syringe, including barrel and push rod, the plug designs into zero type circle structure, push rod head is equipped with the push -and -pull dish of circumference for the recess, be equipped with bullet head protrusion post on the push -and -pull dish axial up end in order to reduce the liquid medicine volume of remaining in the barrel conical head, the push -and -pull is tried to get to the heart of a matter face 6~8mm department and is equipped with the position circle in order to guarantee that push rod head moves from top to bottom at barrel water -logging flat line, zero type circle plug is installed and guarantee that zero type encloses the sealed cooperation of plug and recess and barrel inner wall in the recess of push -and -pull dish circumference with behind the supporting barrel of packing into together of push rod. The utility model discloses having reduced the area of contact of plug with the liquid medicine, having reduced plug and reaction of liquid medicines's possibility, reduced the liquid medicine volume of remaining, simple structure saves rubber and silica gel material, and the production of being convenient for is safe energy -concerving and environment -protective.

Description

Single use zero type circle plug syringe

Technical field

This utility model relates to disposable syringe, is specifically related to single use zero type circle plug syringe.

Background technology

At present, use in a large number on the market and sell remain traditional disposable syringe, form primarily of overcoat, core bar and piston, wherein overcoat directly can contact with medicinal liquid with piston two parts, overcoat is generally made up of chemical-resistant high molecule plastic material, substantially do not react with medicinal liquid, and be made up of natural rubber with the matching used piston of core bar, some composition comparatively easily and in medicinal liquid of rubber constituent wherein reacts.In the configuration aspects of piston, the piston of current injector generally adopts full pack arrangement, the piston of this structure and medicinal liquid is adopted to have a larger contact surface, for the chemical composition in rubber constituent in piston and medicinal liquid provides wide contact surface, considerably increase the probability that itself and medicinal liquid react, and then cause the change of medicinal liquid character.Practice find the injector push-rod (" ZL201320596797.7 ") of band zero type circle plug declared if push rod push-and-pull time wave or there is certain angle with cylindrical shell, so may there is the risk of leakage in zero type circle plug and cylinder inboard wall sealing place.

Summary of the invention

The purpose of this utility model is: provide single use zero type circle plug syringe, simple structure, easy to operate, safety energy-conserving environment protection, solves zero type circle plug leakage and the large problem of liquor residue amount, makes product more perfect.

Technical solution of the present utility model is: this single use zero type circle plug syringe comprises cylindrical shell and push rod, it is characterized in that: plug is designed to zero type coil structures, push rod head is provided with the push-and-pull dish that circumference is groove, push-and-pull dish end face axle center is provided with sub warhead and protrudes post to reduce cylindrical shell conehead inner liquid medicine residual quantity, push-and-pull 6 ~ 8mm the place, face that tries to get to the heart of a matter is provided with centring ring to ensure that push rod head horizontal linear in cylindrical shell runs up and down, being sealed and matched of zero type circle plug and groove and cylinder inboard wall is ensured after loading cylindrical shell together with supporting with push rod in the groove that zero type circle plug is arranged on push-and-pull dish circumference.

Wherein, described zero type circle plug is made up of medical grade rubber or silica gel material.

Wherein, described centring ring external diameter size is close with push-and-pull tray bottom external diameter.

Wherein, described utility model syringe dosage model comprises 1ml, 2ml, 2.5ml, 3ml, 5ml, 10ml, 20ml, 50ml, 100ml.

The utility model has the advantages that: zero type circle plug structure is simple, decrease the cost of raw material that makes plug and with medicinal liquid contact area, the pollution of plug to medicinal liquid is greatly reduced, and liquor residue amount is few, the safer energy-conserving and environment-protective of product.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation.

Fig. 2 is the zero type circle plug design sketch of Fig. 1.

In figure: 1 cylindrical shell, 2 push rods, 3 zero type circle plugs, 21 sub warheads protrude post, 22 push-and-pull dishes, 23 grooves, 24 centring rings.

Detailed description of the invention

For ease of understanding, referring to accompanying drawing, the technical solution of the utility model is described in further detail.

See Fig. 1, this single use zero type circle plug syringe comprises cylindrical shell 1 and push rod 2, it is characterized in that: plug 3 is designed to zero type coil structures, push rod 2 head is provided with the push-and-pull dish 22 that circumference is groove, push-and-pull dish 22 axially end face is provided with sub warhead protrusion post 21 to reduce cylindrical shell 6:100 conehead inner liquid medicine residual quantity, 6 ~ 8mm place, push-and-pull dish 22 bottom surface is provided with centring ring 24 to ensure that push rod 2 head horizontal linear in cylindrical shell 1 runs up and down, being sealed and matched of zero type circle plug 3 and groove 23 and cylindrical shell 1 inwall is ensured after loading cylindrical shell together with supporting with push rod 2 in the groove 23 that zero type circle plug 3 is arranged on push-and-pull dish circumference.

See Fig. 2, zero type circle plug 3 is made up of medical grade rubber or silica gel material.

See Fig. 1, bottom centring ring 24 external diameter size and push-and-pull dish 22, external diameter is close.

Claims (4)

1. single use zero type circle plug syringe, comprise cylindrical shell (1) and push rod (2), it is characterized in that: plug is designed to zero type coil structures, push rod (2) head is provided with the push-and-pull dish (22) that circumference is groove, push-and-pull dish (22) axially end face is provided with sub warhead protrusion post (21) to reduce cylindrical shell 6:100 conehead inner liquid medicine residual quantity, 6 ~ 8mm place, push-and-pull dish (22) bottom surface is provided with centring ring (24) to ensure that push rod (2) head horizontal linear in cylindrical shell (1) runs up and down, being sealed and matched of zero type circle plug (3) and groove (23) and cylindrical shell (1) inwall is ensured after loading cylindrical shell together with supporting with push rod (2) in the groove (23) that zero type circle plug (3) is arranged on push-and-pull dish circumference.

2. single use zero type circle plug syringe according to claim 1, is characterized in that: zero type circle plug (3) is made up of medical grade rubber or silica gel material.

3. single use zero type circle plug syringe according to claim 1, is characterized in that: the external diameter size of centring ring (24) is close with the bottom external diameter of push-and-pull dish (22).

4. single use zero type circle plug syringe according to claim 1, is characterized in that: syringe dosage model comprises 1ml, 2ml, 2.5ml, 3ml, 5ml, 10ml, 20ml, 50ml, 100ml.