CN207627686U - A kind of needle tubing structure of pre-encapsulated injector - Google Patents

Abstract

The utility model is related to a kind of medical instruments.Purpose is to provide a kind of improvement of the needle tubing structure of pre-encapsulated injector, which should have the characteristics that encapsulation rigorous security, easy to use and simple in structure, cost is relatively low.Technical solution is：A kind of needle tubing structure of pre-encapsulated injector, including the needle tubing of tubulose, the syringe needle that is connected to positioned at needle tubing front end and with syringe intracavity；It is characterized in that：The front end of syringe needle also sets up an end socket, which is linked together by being molded the entire edge of the thin-walled and needle injection mouth that are formed；The front end of needle tubing also configures a sealing cap for being coated with syringe needle and end socket, and one and the matched sleeve of the end socket is arranged in the inner cavity central coaxial of sealing cap, to apply the torque for making syringe needle break a seal to end socket when sealing cap is rotated about axis.

Description

A kind of needle tubing structure of pre-encapsulated injector

Technical field

The utility model is related to the needle tubing structures of a kind of medical instrument, especially pre-encapsulated injector.

Background technology

Pre-encapsulated injector has storage two kinds of effects of drug and normal injection simultaneously, and uses compatibility and stablize Property good material, not only securely and reliably, and compared to traditional " medicine bottle+syringe " mode, reduce to the maximum extent From spent artificial and cost is produced in using, perhaps various advantages are brought to pharmacy corporation and Clinical practice.Currently, As the pre-encapsulated injector of liquid container filling, through being widely used.

Existing pre-encapsulated injector needle tubing encapsulation, mostly uses greatly the side for the end socket top pressure rubber seal head that screw thread screws Formula.Not only needle tubing structure is relative complex for this kind of mode, and cost of manufacture is higher, and during the shipping storage in later stage there is also Liquid reveals the security risk with pollution.

Utility model content

The purpose of the utility model is to overcome the deficiencies of above-mentioned background technology, provide a kind of needle tubing knot of pre-encapsulated injector The improvement of structure, the structure should have the characteristics that encapsulation rigorous security, easy to use and simple in structure, cost is relatively low.

To achieve the goals above, the utility model adopts the following technical solution：

A kind of needle tubing structure of pre-encapsulated injector, including the needle tubing of tubulose, be located at needle tubing front end and with syringe intracavity connect Logical syringe needle；It is characterized in that：The front end of syringe needle also sets up an end socket, and the end socket is by being molded the thin-walled formed and needle injection The entire edge of mouth is linked together；The front end of needle tubing also configures a sealing cap for being coated with syringe needle and end socket, the inner cavity center of sealing cap Coaxial arrangement one and the matched sleeve of the end socket make syringe needle Kaifeng to apply to end socket when sealing cap is rotated about axis Torque.

The cross section of the end socket is polygon；The sleeve is integrally formed with sealing cap.

The thickness of the thin-walled is 0.10-0.30mm.

The sealing cap is tubular sealing cap.

The outer circumference surface of the sealing cap makes the lines having convenient for holding.

The needle tubing structure is that PP materials are made.

The utility model has the beneficial effects that：

As a result of the structure for making end socket break a seal by rotating sealing cap, transport and the storage safety of liquid not only ensure that And quality of liquid medicine, and using also very healthy and convenient；In addition, since structure simplifies, accessory is less than the prior art again, because This cost of manufacture is also substantially reduced.

Description of the drawings

Fig. 1 is the main structure diagram of the utility model.

Fig. 2 is the main structure diagram of needle tubing in the utility model.

Fig. 3 is the dimensional structure diagram of the utility model.

Fig. 4 is the three-dimensional enlarged structure schematic diagram of sealing cap in the utility model.

The main view enlarged structure schematic diagram of sealing cap in Fig. 5 the utility model.

Fig. 6 is the A-A section view enlarged structure schematic diagrams in Fig. 2.

Fig. 7 is the portions the B enlarged structure schematic diagram in Fig. 2.

Specific implementation mode

Embodiment shown in below in conjunction with the accompanying drawings further illustrates.

The needle tubing structure of pre-encapsulated injector shown in the drawings, including the needle tubing 1 of tubulose and positioned at needle tubing front end and with The syringe needle 1-1 of syringe intracavity connection；These are similar with existing pre-encapsulated injector structure.

The improvement of the utility model is：The front end (right end of Fig. 2) of the syringe needle also sets up an end socket 1-2, the end socket It is linked together by being molded the thin-walled 1-21 formed and the entire edge of needle injection mouth；The front end of needle tubing also configures a sealing cap 2, The sealing cap is coated with syringe needle and end socket, to keep cleaning and the health of syringe needle and end socket position；The inner cavity center of sealing cap is also coaxial One matched sleeve 2-1 of outer shape with end socket is set, to be generated to end socket while sealing cap is rotated about axis Torque, to make the thin-walled be broken and syringe needle is caused to break a seal.

The outer profile of the end socket cross section is polygon, is recommended using square；The sleeve and sealing cap integrated injection molding Molding, the effect of the sleeve is similar to the sleeve in box spanner.

The walled thickness that the end socket is connect with needle injection mouth edge can determine that recommendation thickness is 0.10- as needed 0.30mm；It is further to recommend, walled thickness 0.20mm.

The sealing cap is tubular sealing cap；The outer circumference surface of sealing cap makes the lines 2-2 having convenient for holding, and operation is contributed to make With.

The needle tubing structure is that PP materials are made.

The principles of the present invention are：

Since the end socket in needle tip face is linked together with needle injection mouth by being molded the thin-walled formed, this just disappears completely In addition to there may be the hidden danger of leakage for encapsulation liquid；Simultaneously again due to the thinner thickness at thin-walled position, thus only need when in use User's hand pinch sealing cap (finger will not contact end socket, therefore pollution-free worry) rotated slightly around syringe axis can by sealing cap together with End socket is detached from needle injection mouth together, you can by the specified instrument (such as remaining needle) of packaged liquid injection, or loads onto conjunction Suitable injection draw point is used cooperatively.

Claims (6)

1. a kind of needle tubing structure of pre-encapsulated injector, including the needle tubing (1) of tubulose, it is located at needle tubing front end and connects with syringe intracavity Logical syringe needle (1-1)；It is characterized in that：The front end of syringe needle also sets up an end socket (1-2), and the end socket is by being molded the thin-walled formed The entire edge of (1-21) and needle injection mouth are linked together；The front end of needle tubing also configures a sealing cap for being coated with syringe needle and end socket (2), one and the matched sleeve of the end socket (2-1) is arranged in the inner cavity central coaxial of sealing cap, to be rotated about axis in sealing cap When to end socket apply make syringe needle break a seal torque.

2. the needle tubing structure of pre-encapsulated injector according to claim 1, it is characterised in that：The cross section of the end socket is Polygon；The sleeve is integrally formed with sealing cap.

3. the needle tubing structure of pre-encapsulated injector according to claim 2, it is characterised in that：The thickness of the thin-walled is 0.10-0.30mm。

4. the needle tubing structure of pre-encapsulated injector according to claim 3, it is characterised in that：The sealing cap seals for tubular Cap.

5. the needle tubing structure of pre-encapsulated injector according to claim 4, it is characterised in that：The outer circumference surface of the sealing cap Make the lines (2-2) having convenient for holding.

6. the needle tubing structure of pre-encapsulated injector according to claim 5, it is characterised in that：The needle tubing structure is PP materials It is made.