CN202376558U

CN202376558U - Novel disposable syringe

Info

Publication number: CN202376558U
Application number: CN2011202978720U
Authority: CN
Inventors: 张星星; 林静
Original assignee: Shanghai Linjing Medical Equipment Co Ltd
Current assignee: Shanghai Linjing Medical Equipment Co Ltd
Priority date: 2011-08-16
Filing date: 2011-08-16
Publication date: 2012-08-15
Anticipated expiration: 2021-08-16

Abstract

The utility model provides a novel disposable syringe, comprising an outer cover and a core rod, the novel disposable syringe is characterized in that: the core rod is made in one integration, the head of the core rod is made to be in the shape of a conical head consistent with the front shape of the outer cover, the lower part of the core rod head part is provided with at least one ore more than one groove for installation of a sealing ring, materials such as an environmental protection material, elasticity metal plastic, a rubber and plastic composite material, latex or silica gel, etc. can be used for manufacture of the sealing ring. Easy biological performance reaction with a medicine liquid due to rubber used for manufacture of a piston at the front end of a previous core rod is effectively prevented, the novel disposable syringe aims at protecting physical and mental health of people, and particularly aims at protecting physical and mental health of people with allergic constitution or immunodeficiency. The novel disposable syringe is suitable for multiple uses, and is widely used, the novel disposable syringe is provided with good benefit, and is worthy of popularization and use, and can benefit people.

Description

A kind of new disposable uses syringe

Technical field

This utility model relates to the disposable medical instrument field, particularly relates to a kind of new disposable and uses syringe.

Background technology

Disposable syringe is a kind of clinical product that is widely used in of known, and for example liquid medicine injection, blood drawing etc. all will be used it.Existing disposable syringe is made up of overcoat, core bar and piston usually, and piston is used for being installed in the front end of the head of core bar.After medicinal liquid gets into syringe; Promptly directly contact with outer casing inner wall with piston; The overcoat of the disposable syringe that uses both at home and abroad at present and bar core all adopt the high molecule plastic material to process basically; The piston that is positioned at the core bar front end is then processed by natural rubber (usually with latex or silica gel), and the former medical macromolecular materials contact with medicinal liquid unusual biological property reaction does not take place basically, and the latter's natural emulsion or silica gel material then have report to be prone to some medicinal liquid unusual biological property reaction take place; Maybe can change the character of some drugs, even can anaphylaxis take place some Susceptible population.For this reason, we study it, and have developed a kind of novel disposable syringe.Up to now, both at home and abroad as yet not relevant for the research and the report of the disposable syringe of this utility model.

Summary of the invention

The purpose of this utility model provides a kind of new disposable and uses syringe, to overcome the deficiency of prior art.

To achieve these goals; The disposable syringe of this utility model; Comprise overcoat and core bar; It is characterized in that: core bar is processed integrated, the core bar head is processed and the corresponding to conehead shape of overcoat front shape, have at least one or more to supply to install the groove of sealing rings in the core bar lower head.Above-mentioned sealing ring can adopt environment-friendly materials, elastic metal-plastic, composite rubber-plastic material, latex or silica gel material to make.

This utility model is applicable to the disposable syringe of various uses, like insulin syringe, forever prevent to reuse the syringe, glass syringe, re-use preventing once-used syringe, precharging type syringe or the like of characteristic with needle injection, the syringe that has the power drive syringe pump, self-destruction type fixed dosage vaccine syringe, band.

So existing relatively various syringes of this utility model and disposable syringe; Because the head of core bar need not to install piston again; But original piston is changed over the core bar head and realizes the integrated design of whole core bar; Core bar all adopts the medical grade macromolecular material to make, and does not so just exist the piston made from natural rubber originally directly to contact with medicinal liquid, when medicinal liquid gets into syringe; What directly contact with medicinal liquid is core bar head and outer casing inner wall; Because core bar head and core bar are integrated designs, and core bar all adopts the making of medical grade macromolecular material and can unusual biological property change not take place with medicinal liquid with overcoat, adopts ultrafine sealing ring simultaneously and is installed on the groove of core bar lower head instead; Described sealing ring can adopt environment-friendly materials, elastic metal-plastic, composite rubber-plastic material, latex or silica gel material to make, but is not limited thereto.

Beneficial effect: removed the piston that is prone to take place unusual biological property reaction that places employing latex that syringe core rod front end and medicinal liquid directly contact or silica gel to make with medicinal liquid; Effectively avoid the original piston that uses contact being prone to take place unusual biological property reacting the adverse consequencess such as allergy that incident unusual biological property change causes when being intended to protect the crowd of allergic constitution or immunodeficiency to use original syringe with medicinal liquid; The existing employing becomes the core bar of band groove with bar core and originally preposition piston through integrated design, reports the unusual biological respinse of disposable syringe employing medical macromolecular materials to medicinal liquid because of core bar head and core bar all adopt the medical macromolecular materials making not see to have; Sealing ring is installed in the core bar lower head, and the sealing circle is different with the residing position of original piston, and the one, can avoid directly contacting with medicinal liquid; The 2nd, have excellent sealing effect; The 3rd, can realize fully that the push-and-pull process of core bar in syringe jacket produces enough negative pressure, push-and-pull is light, and is easy to operate; The 4th, sealing ring adopts same latex or silica gel to make, and is little more than the volume of piston because of sealing ring, materials are few, in light weight under the same prerequisite that adopts rubber, and reduced cost; The 5th, sealing ring also can adopt material such as environment-friendly materials, elastic metal-plastic, and these materials are not seen at present as yet has the report that unusual biological property reaction takes place with medicinal liquid.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment this utility model is elaborated:

Fig. 1 is the structural representation of this utility model;

Fig. 2 is a bar core sketch map;

Fig. 3 is the overcoat sketch map;

Fig. 4 is the local enlarged diagram of the sealing ring of Fig. 1.

Among the figure: 1, overcoat 2, core bar 3, core bar head 4, overcoat crimping 5, groove 6, sealing ring 7, the groove 8 that unmakes, press hands 9, conehead 10, cone head hole

The specific embodiment

Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, a kind of new disposable of this utility model uses syringe, comprises overcoat 1, core bar 2 and sealing ring 6.

The overcoat 1 of disposable syringe is processed by medical macromolecular materials; The with holes conehead 9 of the front end of syringe jacket 1 for matching with entry needle; The opening part of syringe jacket 1 should have crimping 4, must not turn over 180 degree when being placed on the face that becomes 10 ° of angles with level arbitrarily to guarantee syringe.And should avoid flash of light, no sharp edge; The design of the size of crimping, shape and intensity should be able to be satisfied the needs of estimating purposes; And syringe is stablized in use held, have the scale (not shown) on the outer wall of overcoat 1, the inwall of overcoat 1 contacts with the outer surface of core bar head 3.

Core bar 2 is processed by medical macromolecular materials, and the front end of core bar 2 is processed the core bar head 3 of the conehead shape that is complementary with outer taper 9, and two grooves 5 are set below core bar head 3, and sealing ring 6 is installed in the groove 5, and sealing circle 6 adopts silica gel materials to make.When being used for re-use preventing once-used syringe, can on core bar 2, increasing the groove 7 that unmakes and get final product.

During use; Press hands 8 with holding to take; Medicinal liquid is pumped in the syringe, and medicinal liquid at first enters in the syringe cavity between overcoat 1 and the core bar head 3, like this through cone head hole 10 through behind the syringe needle; What contact with medicinal liquid is the overcoat 1 and core bar head 3 that medical macromolecular materials are made; But not the syringe cavity that the overcoat that the original piston made from rubber and medical macromolecular materials are made is formed, so this utility model disposable syringe can not produce the unusual biological property reaction of medicinal liquid, and can avoid because of using rubber piston to change the situation generation of medicinal liquid performance; When suction and push-and-pull medicinal liquid, can produce enough negative pressure simultaneously and bring light labour-saving sensation to the medical personnel; Even if the sealing ring that uses latex or silica gel to make in the groove below core bar; Also lack several times, effectively reduce cost, protected the patient physically and mentally healthy simultaneously than the piston consumption of before making with latex or silica gel; Therefore practical value is high, is worth of widely use.

The applicant has made detailed description to the design and the embodiment of this utility model; Those skilled in the art can make various conversion and improvement on this basis; But these conversion with improve the spirit all do not break away from this utility model, all within the protection domain that claims and description are limited.

Claims

1. a new disposable uses syringe; Comprise overcoat and core bar; It is characterized in that: core bar is processed integrated, the core bar head is processed and the corresponding to conehead shape of overcoat front shape, have at least one or more to supply to install the groove of sealing rings in the core bar lower head.

2. a kind of new disposable according to claim 1 uses syringe, it is characterized in that: sealing ring can adopt environment-friendly materials, elastic metal-plastic, composite rubber-plastic material, latex or silica gel material to make.