CN204582168U - A kind of injector for medical purpose - Google Patents

Abstract

The utility model relates to a medical syringe, which comprises a syringe, a piston and a piston rod. The piston is fixed on the piston rod, and the piston rod is inserted into the syringe. One end of the syringe is provided with a needle port. One end with a needle port is provided with a conical hole inside the syringe, the front end of the piston is provided with a conical head adapted to the conical hole, and the other end of the piston rod is provided with a ring; between the ring and the piston rod threaded connection; the opening end of the injection cylinder is provided with a pair of finger rests arranged symmetrically; the injection cylinder is provided with a necked part; the piston rod of the utility model is provided with a finger ring, and the injection cylinder is provided with a finger rest, It is simple and convenient to use, convenient and fast, the conical head at the front end of the piston and the conical hole on the injection barrel are closely fitted without leaving any gaps, and there is no residue when injecting drugs, avoiding the waste of drugs.

Description

a medical syringe

technical field

The utility model relates to the field of medical equipment, in particular to a medical syringe.

Background technique

Syringe is a common medical equipment, the emergence of syringe is an epoch-making revolution in the field of medical equipment, and the process of needle extraction or injection of gas or liquid is called injection. The syringe consists of a syringe with a small hole at the front end and a matching piston core rod, which is used to inject a small amount of liquid or inject it into areas that are inaccessible by other methods or withdraw it from those places. When the core rod is pulled out, the liquid Or the gas is inhaled from the small hole at the front of the syringe, and the liquid or gas is squeezed out when the core rod is pushed in. Syringe barrels can be plastic or glass, and usually have graduations on them that show the volume of liquid in the syringe. Glass syringes can be sterilized in an autoclave, but because plastic syringes are less expensive to dispose of, most modern medical syringes are made of plastic, further reducing the risk of blood-borne diseases. Under the existing technical conditions, when the syringe is in use, the suction and injection actions need two hands to cooperate at the same time. It is extremely inconvenient to use when one hand needs to hold other objects. At the same time, the piston in the syringe moves to the lower limit position At the same time, there is a little gap between the piston and the injection barrel, and the drug is easy to remain in the gap, resulting in waste.

Utility model content

In order to overcome the deficiencies in the prior art, the utility model provides a medical syringe, the utility model is simple and convenient to use, convenient and quick, there is no residue when injecting medicine, and the waste of medicine is avoided.

The utility model is realized through the following technical solutions:

A medical syringe, comprising a syringe, a piston, and a piston rod, the piston is fixed on the piston rod, the piston rod is inserted into the syringe, one end of the syringe is provided with a needle port, and the syringe is provided with a needle port One end is provided with a conical hole inside the syringe, the front end of the piston is provided with a conical head adapted to the conical hole, and the other end of the piston rod is provided with a finger ring.

As a preferred technical solution of the utility model, the ring and the piston rod are connected by threads.

As a preferred technical solution of the present utility model, the opening end of the injection barrel is provided with a pair of symmetrically arranged finger rests.

As a preferred technical solution of the utility model, the syringe is provided with a constricted portion.

Compared with the existing technology, the beneficial effects of the utility model are: the piston rod of the utility model is provided with a finger ring, and the injection cylinder is provided with a finger rest. The conical hole on the barrel fits tightly without leaving any gaps, and there is no residue when injecting the drug, avoiding the waste of the drug.

Description of drawings

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

In the figure: 1, finger ring; 2, finger rest; 3, neck constriction; 4, injection barrel; 5, piston rod; 6, piston; 7, conical head; 8, needle port; 9, conical hole.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Please refer to Fig. 1, Fig. 1 is the structural representation of the utility model.

Described a kind of medical injector comprises syringe 4, piston 6, piston rod 5, and described piston 5 is fixed on the piston rod 6, and piston rod 6 is inserted in syringe 4, and described syringe 4 one end is provided with needle port 8. One end of the syringe 4 provided with a needle port 8 is provided with a conical hole 9 inside the syringe 4, and the front end of the piston 6 is provided with a conical head 7 adapted to the conical hole 9, and the piston rod 5 The other end is provided with finger ring 1.

As a preferred embodiment of the present invention, the finger ring 1 and the piston rod 5 are connected by threads.

As a preferred embodiment of the present invention, the opening end of the syringe 4 is provided with a pair of finger rests 2 arranged symmetrically.

As a preferred embodiment of the present invention, the syringe 4 is provided with a constricted portion 3 .

Compared with the existing technology, the beneficial effect of the utility model is that the piston rod 5 of the utility model is provided with a finger ring 1, and the injection cylinder 4 is provided with a finger rest 2, which is simple and convenient to use, convenient and quick, and the front end of the piston 6 The conical head 7 and the conical hole 9 on the injection barrel 4 are closely fitted without leaving a gap, and there is no residue when injecting medicine, so as to avoid waste of medicine.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. a kind of medical injector, comprises syringe (4), piston (6), piston rod (5), and described piston (6) is fixed on the piston rod (5), and piston rod (5) is inserted in syringe ( 4), it is characterized in that: one end of the syringe (4) is provided with a needle port (8), and one end of the syringe (4) provided with the needle port (8) is provided with a needle port (8) inside the syringe (4). A conical hole (9), the front end of the piston (6) is provided with a conical head (7) adapted to the conical hole (9), and the other end of the piston rod (5) is provided with a finger ring (1). 2. A medical injector according to claim 1, characterized in that: the finger ring (1) and the piston rod (5) are threadedly connected. 3. A medical injector according to claim 1, characterized in that: the opening end of the syringe (4) is provided with a pair of finger rests (2) arranged symmetrically. 4. A medical injector according to claim 1, characterized in that: the syringe (4) is provided with a constricted portion (3).