CN210145216U - Syringe for viscous liquids - Google Patents

Abstract

A syringe for viscous medicinal liquid, comprising: a cylinder body, a piston member, and a steel needle; the cylinder body is formed with an air inlet hole and a circular hole at its second end, and an inner thread is formed on the inner peripheral wall of the circular hole; A steel needle base is formed outside the side wall of the first end of the cylinder body, and a silicone tube needle is formed at the first end of the steel needle base; a steel needle binding hole is formed in the steel needle base; the steel needle binding hole is communicated with the silicone tube needle A connecting through hole is formed close to the inner side of the first end of the cylinder body, and the connecting through hole communicates the inside of the cylinder body with the steel needle combination hole; the piston head is rotatably combined with the first end of the piston rod with the piston rod as the axis, The second end of the piston rod is fixedly formed with a wheel-shaped handle; the rod body of the piston rod is formed with an external thread; the piston rod extends from the circular hole at the second end of the cylinder body to the outside; the steel needle is inserted into the steel needle combining hole and the silicone tube needle; the first end of the steel needle forms a tip and extends to the outside of the silicone tube needle; the second end of the steel needle extends to the outside of the second end of the steel needle combining hole.

Description

Syringe for viscous liquids

technical field

The utility model relates to a syringe, in particular to a syringe for viscous medicinal liquid.

Background technique

When injecting viscous liquid medicine, it is difficult to push the liquid medicine out of the syringe due to the viscosity of the liquid medicine. For example, the breast cancer drug fulvestrant, which contains castor oil, can be very sticky and nurses struggle to administer the bolus. Once the hand slips with too much force, it is especially likely to cause the needle to move and cause unnecessary stab injuries.

Utility model content

In view of the above problems, the present invention aims to provide a syringe suitable for viscous medicine, which can be smoothly pushed out from the barrel of the syringe without unnecessary needle stick injuries.

The syringe for viscous medicinal liquid of the utility model comprises: a cylinder body, a piston member and a steel needle;

The cylinder body is formed with an air inlet hole and a circular hole at its second end, and an inner thread is formed on the inner peripheral wall of the circular hole; a steel needle base is formed outside the side wall of the first end of the cylinder body, and the first A silicone tube needle is formed at the end; a steel needle combining hole is formed in the steel needle base; the steel needle combining hole is communicated with the silicone tube needle; a connecting through hole is formed close to the inner side of the first end of the cylinder, The interior is communicated with the steel needle combination hole;

The piston member includes a piston head and a piston rod; the piston head is rotatably combined with the first end of the piston rod with the piston rod as the axis, and the second end of the piston rod is fixedly formed with a wheel-shaped handle; a thread; the piston head is accommodated in the cylinder, the piston rod extends from the circular hole at the second end of the cylinder to the outside, and the outer thread of the piston rod is engaged with the inner thread of the circular hole;

The steel needle is inserted into the steel needle combination hole and the silicone tube needle; the first end of the steel needle forms a tip and extends to the outside of the silicone tube needle; the second end of the steel needle extends to the second end of the steel needle combination hole. outside of the two ends.

Preferably, the silicone tube needle is formed with a plurality of side holes at its first end.

Preferably, an ultrasonic vibration generator is further formed at the first end of the cylinder to apply ultrasonic vibration to the medicinal liquid in the cylinder.

Preferably, an inner thread is formed on the inner wall of the steel needle coupling hole;

External threads are formed on the outer periphery of the part of the steel needle that does not extend outside the silicone tube needle;

The outer thread of the steel needle is engaged with the inner thread of the combination hole of the steel needle to form a seal.

Preferably, the second end of the steel needle is formed with a raised portion for easy operation.

Preferably, a bump is formed in the middle of the steel needle;

The first end of the steel needle combining hole forms a front limit stop, and the second end forms a rear limit stop.

Preferably, the diameter of the wheel-shaped handle is larger than the outer diameter of the cylinder.

Preferably, the piston rod forms a disc-shaped boss at its first end, the piston head forms a disc-shaped coupling hole at its second side, and the disc-shaped boss is rotatably coupled to the disc-shaped boss. in the binding hole.

The syringe for the viscous medicinal liquid of the utility model pushes the piston head forward by rotating, and the nurse is more labor-saving to operate; the ultrasonic vibrating head loads the ultrasonic wave into the medicinal liquid, which is beneficial to the flow of the medicinal liquid in the smaller channel and the stability of the medicinal liquid. Penetration; when the liquid medicine is pushed in, only the silicone tube needle remains in the patient's body. Even if the tube needle moves during the operation, it will not cause unnecessary stab wounds.

Description of drawings

Fig. 1 is the structural representation of the first embodiment of the syringe for viscous medicinal liquid of the present invention;

Fig. 2 is the structural representation of the barrel of the syringe for viscous medicinal liquid of Fig. 1;

Fig. 3 is the structural representation of the piston member of the syringe for viscous medicinal liquid of Fig. 1;

Fig. 4 is the structural representation of the steel needle of the syringe for viscous medicinal liquid of Fig. 1;

Fig. 5 is the state schematic diagram when the syringe for viscous medicinal liquid of Fig. 1 pushes out medicinal liquid;

FIG. 6 is a schematic structural diagram of the second embodiment of the syringe for viscous medicinal liquid according to the present invention.

Detailed ways

Below, in conjunction with the accompanying drawings, the syringe of the present utility model will be described in detail.

The syringe for viscous medicinal liquid of the present invention comprises: a cylinder body 10 , a piston member 20 and a steel needle 30 .

The cylinder body 10 is formed with an air inlet hole (not shown in the figure) and a circular hole 13 at its second end, and an inner thread is formed on the inner peripheral wall of the circular hole 13; Strengthen the firmness of the round hole 13 .

A steel needle base 15 is formed outside the side wall of the first end of the cylinder body 10, a silicone tube needle 17 is formed at the first end of the steel needle base 15; a steel needle combining hole 19 is formed in the steel needle base; the steel needle combining hole 19 communicates with the silicone tube needle 17 ; a connecting through hole 16 is formed close to the inside of the first end of the cylinder body 10 , and the connecting through hole 16 communicates the interior of the cylinder body 10 with the steel needle combining hole 19 .

The piston member 20 includes a piston head 21 and a piston rod 24; the piston head 21 is rotatably coupled to the first end of the piston rod 24 with the piston rod 24 as the axis, and the second end of the piston rod 24 is fixedly formed with a wheel-shaped handle 25; An external thread is formed on the rod body of the piston rod 24; the piston head is accommodated in the cylinder body 10, the piston rod 24 extends from the circular hole 13 at the second end of the cylinder body to the outside, and the external thread of the piston rod 24 and the internal thread of the circular hole 13 The piston rod 24 can form a disc-shaped boss 23 at its first end, the piston head 21 can form a disc-shaped coupling hole 22 at its second side, and the disc-shaped boss 23 can be rotatably combined with the disc-shaped boss 23 in the binding hole 22 .

The steel needle 30 is inserted into the steel needle combining hole 19 and the silicone tube needle 17; the first end of the steel needle 30 forms a tip 31 and extends to the outside of the silicone tube needle 17; the second end of the steel needle 30 extends to the steel needle combining hole 19 External of the second end.

The silicone tube needle 17 is formed with a plurality of side holes 18 at its first end to increase the number of output ports.

The cylinder body 10 is further formed with an ultrasonic vibration generator 14 at its first end to load the liquid medicine in the cylinder with ultrasonic vibration, and the ultrasonic wave propagates in the liquid medicine, which is beneficial to the fluidity of the liquid medicine in the relatively narrow flow channel. Increase, to facilitate the rapid entry of liquid medicine into the patient's body.

An inner thread is formed on the inner wall of the steel needle coupling hole 19; an outer thread is formed on the outer circumference of the part of the steel needle 30 that does not extend out of the silicone tube needle 17; the outer thread of the steel needle meshes with the inner thread of the steel needle coupling hole together to form a seal.

The steel needle 30 is formed with a raised portion 33 at its second end for easy operation.

In the second embodiment, a convex block is formed in the middle of the steel needle; a front limit stop is formed at the first end of the connecting hole of the steel needle, and a rear limit stop is formed at the second end.

The diameter of the wheel-shaped handle 25 is larger than the outer diameter of the barrel 10 . In this way, the user's operation is more labor-saving.

During puncture, the steel needle is kept in the silicone tube needle, and the silicone tube needle and the steel needle are pierced into the patient's body together; then the steel needle is retracted so that the connecting through hole is connected to the silicone tube needle, and the wheel-shaped handle is rotated at this time. , the piston rod 24 is screwed in the circular hole 13, pushes the piston head forward, extrudes the viscous medicinal liquid from the connecting through hole, and enters the patient's body through the silicone tube needle. To increase the fluidity of viscous liquids, ultrasonic vibration generators can also be used.

The syringe for the viscous medicinal liquid of the utility model is labor-saving and safe when injecting the viscous medicinal liquid, and the injection operation of the nurse is greatly convenient.

Claims (8)

1. A syringe for viscous liquids, comprising: a cylinder, a piston component and a steel needle;

the second end of the cylinder is provided with an air inlet hole and a round hole, and the inner peripheral wall of the round hole is provided with an internal thread; a steel needle base is formed outside the side wall of the first end of the cylinder body, and a silica gel tube needle is formed at the first end of the steel needle base; a steel needle combination hole is formed in the steel needle base; the steel needle combination hole is communicated with the silica gel tube needle; a connecting through hole is formed close to the inner side of the first end of the cylinder body and communicates the inside of the cylinder body with the steel needle combination hole;

the piston member comprises a piston head and a piston rod; the piston head is rotatablely combined at the first end of the piston rod by taking the piston rod as a shaft, and a wheel-shaped handle is fixedly formed at the second end of the piston rod; an external thread is formed on the rod body of the piston rod; a piston head is accommodated in the cylinder, a piston rod extends to the outside from a round hole at the second end of the cylinder, and the external thread of the piston rod is meshed with the internal thread of the round hole;

the steel needle is inserted into the steel needle combination hole and the silica gel tube needle; the first end of the steel needle forms a tip and extends to the outside of the silicone tube needle; the second end of the steel needle extends to the outside of the second end of the steel needle combination hole.

2. The syringe for viscous liquids according to claim 1, characterized in that:

the silica gel tube needle is formed with a plurality of side openings at its first end.

3. The syringe for viscous liquids according to claim 1, characterized in that:

the cylinder body is further provided with an ultrasonic vibration generator at the first end thereof so as to load ultrasonic vibration on the liquid medicine in the cylinder body.

4. The syringe for viscous liquids according to claim 1, characterized in that:

an internal thread is formed on the inner wall of the steel needle combination hole;

external threads are formed on the periphery of the part of the steel needle which does not extend out of the silica gel tube needle;

the external thread of the steel needle is meshed with the internal thread of the steel needle combination hole to form sealing.

5. The syringe for viscous liquid medicine according to claim 1 or 4, characterized in that:

the steel needle is formed with a boss at its second end for convenient operation.

6. The syringe for viscous liquids according to claim 1, characterized in that:

a convex block is formed in the middle of the steel needle;

the first end of the steel needle combination hole forms a front limit stop block, and the second end forms a rear limit stop block.

7. The syringe for viscous liquids according to claim 1, characterized in that:

the diameter of the wheel-shaped handle is larger than the outer diameter of the cylinder body.

8. The syringe for viscous liquids according to claim 1, characterized in that:

the piston rod is formed with a disc-shaped boss at a first end thereof, the piston head is formed with a circular truncated cone-shaped coupling hole at a second side thereof, and the disc-shaped boss is rotatably coupled in the circular truncated cone-shaped coupling hole.

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