CN205885905U - Disposable triangle -shaped circumferential sealing circle self -destruction formula syringe - Google Patents

Abstract

The utility model discloses a disposable triangle -shaped circumferential sealing circle self -destruction formula syringe, including barrel, push rod and piston, piston design becomes equilateral triangle circumference sealing ring structure, and push rod head is equipped with the circumference for the push -and -pull disc of recess, and push -and -pull disc shaft is equipped with to the up end and locks the knot in, and triangle -shaped circumferential sealing circle piston is installed at push -and -pull circle disc groove inslot and the push rod barrel of packing into together, connected by self -destruction mechanism for two sections around the push rod adopts, the push -and -pull disc bottom surface of push rod anterior segment is equipped with the direction circle in order guaranteeing that the push rod anterior segment moves from top to bottom at barrel water -logging flat line, and direction circle bottom surface is equipped with cross protruding support frame, and the top of push rod back end is equipped with concave support frame, and protruding support frame is located concave support frame and moulds plastics through easy breakpoint and connect into the push rod. The utility model discloses reduce the area of contact of piston with the liquid medicine, reduced piston and reaction of liquid medicines's possibility, saved rubber and silica gel material, the production of being convenient for, safety ring protects, and self -destruction after the injection prevents that the syringe from reusing.

Description

Single use triangle circumferential sealing circle self-destruction syringe

Technical field

This utility model is related to self-destruction syringe and in particular to the type self-destroyed note of single use triangle circumferential sealing circle Emitter.

Background technology

At present, use in a large number on the market and sell remain traditional disposable syringe, mainly by overcoat, core bar With piston composition, wherein overcoat and the meeting of piston two parts and medicinal liquid directly contact, overcoat is typically by chemical-resistant polymer plastic Material material is made, and medicinal liquid does not react substantially, and is made up of natural rubber with the matching used piston of core bar, therein Latex component is easier to react with some compositions in medicinal liquid.In the configuration aspects of piston, the piston of current injector is universal Using full pack arrangement, piston and medicinal liquid using this structure have a larger contact surface, are rubber constituent and medicine in piston Chemical composition in liquid provides wide contact surface, considerably increases the probability that it is reacted with medicinal liquid, and then causes medicinal liquid The change of property.Meanwhile, traditional disposable syringe is unable to self-destruction after using, and is recycled by lawless person, exists Major safety risks.

Content of the invention

The purpose of this utility model is: provides single use triangle circumferential sealing circle self-destruction syringe, simply Structure, easy to operate, safety and environmental protection, can self-destruction after injection terminates, prevent syringe from reusing.

Technical solution of the present utility model is: this single use triangle circumferential sealing circle self-destruction syringe bag Include cylinder, push rod and piston, it is characterized in that: plunger designs become equilateral triangle circumferential sealing coil structures, push rod head is provided with circle Week is provided with to upper surface and locks button in for the push-and-pull disk of groove, push-and-pull disc shaft, and triangle circumferential sealing circle piston is arranged on Cylinder is loaded together with push rod in push-and-pull disk groove；Push rod connects design, the push-and-pull disk of push rod leading portion using two sections in front and back Bottom surface has guide collar and is run up and down with ensureing push rod leading portion horizontal linear in cylinder, and guide collar bottom surface is provided with cross Convex bracing frame, the top of push rod back segment is provided with recessed bracing frame, and convex bracing frame is located in recessed bracing frame and connects into through the injection of easy breakpoint Integer push rod.

Wherein, described push rod sets four easy breakpoints, the coaxial symmetrical blading of push rod respectively be arranged in parallel two easily broken The gap on point, the baseplane of convex bracing frame and recessed bracing frame top is in the range of each easily broken point deformation.

Wherein, the 6:100 conehead inner chamber of described barrel front end is provided with the card neck that three or four elastic support claws are formed.

Wherein, the another embodiment of described piston is isosceles trapezoid circumferential sealing circle piston.

Wherein, described piston is made up of medical grade rubber or silica gel material.

The utility model has the advantages that: triangle circumferential sealing circle piston structure is simple, decreases the former material making piston Material cost and with medicinal liquid contact area, make piston that the pollution of medicinal liquid is greatly reduced, the safer environmental protection of product；Push rod is in injection Each easy breakpoint uniform force, deforms simultaneously, collides with recessed bracing frame top end face in deformation range convex bracing frame baseplane, Each easy breakpoint will not rupture, and do not result in easy breakpoint when pushing away liquid and rupture in advance, injection finish rear push-rod backward withdrawing when, can Break along easy breakpoint, so that push rod cannot be reused, reach self-destruction.

Brief description

Fig. 1 is this utility model structural representation.

Fig. 2 is this utility model self-destruction schematic diagram.

Fig. 3 is the triangle circumferential sealing circle piston effect figure of Fig. 1.

Fig. 4 is the push rod easy breakpoint self-distruction structure a-a of Fig. 1 to sectional view.

Fig. 5 is the button neck self-distruction structure top view of the cylinder of Fig. 1.

Fig. 6 is Fig. 1 another embodiment structural representation.

Fig. 7 is the trapezoidal circumferential sealing circle piston effect figure of Fig. 6.

In figure: 1 cylinder, 2 push rods, 3 triangle circumferential sealing circle pistons, 3a trapezoidal circumferential sealing circle piston, 11 buttons Neck, the convex bracing frame of 2a, the recessed bracing frame of 2b, the easy breakpoint of 2c, 21 lock button in, 22 push-and-pull disks, 23 grooves, 24 guide collar.

Specific embodiment

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

Referring to Fig. 1 -- 4, this single use triangle circumferential sealing circle self-destruction syringe includes cylinder 1, push rod 2 and Piston 3 it is characterised in that: piston 3 is designed to equilateral triangle circumferential sealing coil structures, push rod 2 head be provided with circumference be groove 23 push-and-pull disk 22, push-and-pull disk 22 upper axial end face is provided with to lock in buckles 21, and triangle circumferential sealing circle piston 3 is arranged on Load cylinder 1 together with push rod 2 in push-and-pull disk groove 23；Push rod 2 connects design, the push-and-pull of push rod leading portion using two sections in front and back Disk 22 bottom surface has guide collar 24 and is run up and down with ensureing push rod leading portion horizontal linear in cylinder, on guide collar 24 bottom surface It is provided with cross convex bracing frame 2a, the top of push rod back segment is molded into recessed bracing frame 2b, convex bracing frame 2a is located at recessed bracing frame 2b The easy breakpoint 2c injection of interior warp connects into Integer push rod 2.

Referring to Fig. 1,4, described push rod 2 sets four easy breakpoint 2c, the coaxial symmetrical blading of push rod 2 respectively be arranged in parallel The gap f on two easy breakpoints, the baseplane of convex bracing frame 2a and recessed bracing frame 2b top is in each easy breakpoint 2c deformation range.

Referring to Fig. 1,5, the 6:100 conehead inner chamber of described barrel front end is provided with the button neck 11 that three elastic support claws are formed.

Referring to Fig. 6,7, the another embodiment of described piston 3 is isosceles trapezoid circumferential sealing circle piston 3a.

Referring to Fig. 1,3,4, described piston 3 is made up of medical grade rubber or silica gel material.

Referring to Fig. 1,2, described push rod 2 each easy breakpoint 2c uniform force in injection, deform, in deformation range simultaneously Collided with recessed bracing frame 2b top end face in convex bracing frame 2a baseplane, each easy breakpoint 2c will not rupture, and do not result in and push away liquid When easy breakpoint 2c rupture in advance, injection finish rear push-rod 2 backward withdrawing when, can break along easy breakpoint 2c, make the push rod 2 cannot be again Secondary use, reaches self-destruction.

Claims (1)

1. single use triangle circumferential sealing circle self-destruction syringe, including cylinder (1) and push rod (2), push rod (2) head It is provided with the push-and-pull disk (22) that circumference is groove (23), push-and-pull disk (22) upper axial end face is provided with to lock in buckles (21)；Piston (3) it is arranged in push-and-pull disk groove (23) and load cylinder (1) together with push rod (2)；Push rod (2) is set using two sections of connections of in front and back Meter, push-and-pull disk (22) bottom surface of push rod leading portion has guide collar (24) to ensure on push rod leading portion horizontal linear in cylinder Lower operation, guide collar (24) bottom surface is provided with cross convex bracing frame (2a), and the top of push rod back segment is molded into recessed bracing frame (2b), convex bracing frame (2a) is located in recessed bracing frame (2b) and connects into Integer push rod (2) through easy breakpoint (2c) injection；Push rod (2) On set four easy breakpoints (2c), respectively be arranged in parallel on the coaxial symmetrical blading of push rod (2) two easy breakpoints, convex bracing frame (2a) Baseplane and recessed bracing frame (2b) top gap (f) in each easy breakpoint (2c) deformation range；Piston (3) is by medical rubber Glue or silica gel material are made；The 6:100 conehead inner chamber of cylinder (1) is provided with the button neck (11) that three or four elastic support claws are formed； It is characterized in that: piston (3) design triangularity circumferential sealing coil structures；Piston (3) is isosceles trapezoid circumferential sealing circle piston.