CN203227142U - Connecting structure of syringe piston and cylindrical core rod - Google Patents

Abstract

The utility model belongs to the field of medical appliances, in particular to a connection structure between a syringe piston and a cylindrical core rod, a connection structure between a syringe piston and a cylindrical core rod, and is characterized in that: the front end of the cylindrical core rod is processed with Fixed mandrel head, a piston is installed on the top of the fixed mandrel head, a mandrel push handle is processed at the end of the cylindrical mandrel, a button is installed on the mandrel push handle, and the middle position of the mandrel mandrel is processed There are four pieces of guide pieces. To sum up, the utility model has guide pieces ( 5 ) processed on the cylindrical mandrel ( 4 ), so that the cross section of the cylindrical mandrel ( 4 ) can be processed into a very small , which can greatly save raw materials, and because of the role of the guide plate ( 5 ), it can ensure that the cylindrical core rod ( 4 ) works stably and reliably in the needle cylinder ( 1 ).

Description

A connection structure between a syringe piston and a barrel core rod

technical field

The utility model belongs to the field of medical appliances, in particular to a connection structure between a syringe piston and a cylindrical core rod.

Background technique

At present, the core rods of clinically used syringes generally have a structural design that wastes raw materials. Because clinically used syringes are disposable, the waste is quite amazing. When medical staff suck medicine and inject, the syringe core rods are pushed and pulled. It is also more laborious, and the hands are easy to slip off from the edge of the coat, resulting in medical accidents.

Utility model content

The purpose of this utility model is to overcome the above-mentioned shortcomings, and provide a connection structure between a syringe piston and a barrel core rod.

The utility model is realized in the following way: a connection structure between a syringe piston and a cylindrical core rod, which is characterized in that: a fixed core rod head is processed on the front end of the cylindrical core rod, and a piston is installed on the fixed core rod head. A core rod push handle is processed at the end of the cylindrical core rod, a button is installed on the top of the core rod push handle, and four guide pieces are processed at the middle of the cylindrical core rod.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a main sectional view of the utility model.

FIG. 2 is a cross-sectional view of “A-A” in FIG. 1 .

Fig. 3 is a cross-sectional view along "B-B" of Fig. 1 .

Fig. 4 is a "C-C" sectional view of Fig. 1 .

The labels in the figure are explained as follows:

1. Syringe, 2. Piston, 3. Fixed mandrel head, 4. Cylindrical mandrel, 5. Guide piece, 6. Syringe flanging, 7. Mandrel push handle, 8. Button.

Detailed ways

The syringe 1 of the utility model adopts PP polypropylene material to be processed and formed in the mold at one time. The function of the syringe 1 is to store the liquid medicine and make the piston 2 slide in the syringe 1. Processing and molding, the function of the piston 2 is to inject the medicinal solution stored in the syringe 1 through the needle through the needle through the thrust of the core rod push handle 7, or inject the medicinal solution stored in the syringe 1 through the needle for other operations etc., the fixed core rod head 3 is made of PP polypropylene material and processed in the mold at one time, and its function is to fix the piston 2. The cylindrical core rod 4 is processed and formed in the mold with PP polypropylene material, and its function is to ensure the fixed core rod. The piston 2 above the head 3 works stably and reliably. The guide plate 5 is made of PP polypropylene material and processed in the mold at one time. The polypropylene material is processed and formed in the mold at one time. Its function is to operate conveniently, stably and reliably during injection. The core rod push handle 7 is made of PP polypropylene material and processed in one time in the mold. Its function is to ensure that the cylindrical core rod 4 works when it is working. Stable and reliable, the button 8 is made of PP polypropylene material and processed in a mold at one time, and its function is convenient and reliable operation.

In summary, the utility model can process the cross-section of the cylindrical core rod 4 into a very small one due to the guide piece 5 being processed on the top of the cylindrical core rod 4, which can greatly save raw materials. The role of the cylinder core rod 4 can be guaranteed to work stably and reliably in the syringe 1.

Claims (1)

1. A connection structure between a syringe piston and a cylindrical core rod, characterized in that: a fixed core rod head is processed at the front end of the cylindrical core rod, a piston is installed on the fixed core rod head, and a piston is installed on the top of the cylindrical core rod A core rod push handle is processed at the end, a button is installed on the core rod push handle, and four guide pieces are processed in the middle of the cylindrical core rod.

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