CN207477756U - For the syringe of infusion pump - Google Patents

Abstract

A kind of syringe for infusion pump, including cylinder, the first end of cylinder is formed with nipple, protrusion is formed on the outside of the second end of cylinder, piston component is slideably formed in cylinder, piston head is arranged on the first end of piston component, and piston handle is arranged on the second end of piston component；Cylinder-shaped becomes cylindrical shape, is formed with the external screw thread of predetermined length on longitudinal direction of the one end of protrusion in cylinder on the outside of cylinder；Nut is further provided on cylinder, the internal thread of nut is incorporated on the external screw thread of the cylinder, is achieved in position of the nut on cylinder and is adjusted；The side of the separate protrusion of nut is used to be resisted against the holding section of infusion pump；The side of the separate cylinder of piston handle is used to be resisted against the promotion part of infusion pump.

Description

Syringes for infusion pumps

technical field

The utility model relates to a medical device, in particular to a syringe used for an infusion pump.

Background technique

In clinical work, many drug treatments for patients need to be so precise that infusion pumps are needed to infuse drugs. Infusion is performed by snapping the syringe onto the infusion pump. As shown in FIG. 3 , the existing syringe includes a cylinder body 10 , a piston rod 20 , a piston head 21 , a piston handle 22 , a nipple 30 and a protrusion 40 . The clamping part of the infusion pump abuts against the left side of the protrusion of the syringe, and the propulsion part abuts against the right side of the piston handle, thereby pushing the piston to the piston to push the medicine in the cylinder through the nipple. In practice, because the strokes of the infusion pumps vary from manufacturer to manufacturer, a complete infusion can be achieved on one type of infusion pump, but when another type of infusion pump is used, the drug cannot be fully pushed out until the end of the stroke of the infusion pump. That is to say, the trip alarm has occurred and the medicine in the syringe tube is still remaining at this time. If a new medicine is replaced and the remaining medicine is thrown away, unnecessary waste will be caused to the patient.

Utility model content

In view of the above problems, the utility model aims to propose a syringe for infusion pumps, which can adapt to the stroke settings of different types of infusion pumps and ensure that all medicines are infused.

The syringe used for the infusion pump of the utility model comprises a cylinder body, a nipple is formed at the first end of the cylinder body, a protrusion is formed outside the second end of the cylinder body, a piston member is slidably formed in the cylinder body, and the piston head It is arranged at the first end of the piston member, and the piston handle is arranged at the second end of the piston member; the cylinder body is formed in a cylindrical shape, and an external thread of a predetermined length is formed in the longitudinal direction of the cylinder body at an end close to the protrusion on the outside of the cylinder body; The cylinder is further provided with a nut, and the internal thread of the nut is combined with the external thread of the cylinder, thereby realizing the position adjustment of the nut on the cylinder; the side of the nut away from the protrusion is used to abut against the infusion pump The clamping part of the piston handle; the side of the piston handle away from the barrel is used to abut against the propulsion part of the infusion pump.

Preferably, a scale indicating the moving distance of the nut is further provided on the outer side of the cylinder along the longitudinal direction of the cylinder.

Since the barrel of the infusion pump syringe of the utility model is provided with an adjustable nut, it is only necessary to adjust the nut to an appropriate position according to actual needs before the infusion, so that the syringe can adapt to the stroke of the infusion pump, ensuring The entire infusion process is not interrupted, and the drug can be injected completely without remaining drug in the barrel.

Description of drawings

Fig. 1 is the structural representation of the state one of the injector that is used for infusion pump of the present utility model;

Fig. 2 is a schematic structural view of the state one of the syringe used for the infusion pump of the present invention;

Fig. 3 is a schematic structural view of a syringe in the prior art.

Detailed ways

Below, the utility model is described in detail in conjunction with accompanying drawings 1-3 of the description.

The syringe for infusion pump of the present invention comprises a cylinder body 10, a nipple 30 is formed on the first end of the cylinder body 10, a protrusion 40 is formed on the outer side of the second end of the cylinder body 10, and the inside of the cylinder body 10 is slidably A piston member 20 is formed, the piston head 21 is arranged at the first end of the piston member 20, and the piston handle 22 is arranged at the second end of the piston member 20; the cylinder body 10 is formed in a cylindrical shape, and is adjacent to the protrusion 40 on the outside of the cylinder body 10 One end of the cylinder body 10 is formed with a predetermined length of external thread (not shown) in the longitudinal direction; the cylinder body 10 is further provided with a nut 41, and the internal thread of the nut 41 is combined on the external thread of the cylinder body 10, by This realizes the adjustment of the position of the nut 41 on the barrel 10; the side of the nut 41 away from the protruding part is used to abut against the holding part of the infusion pump; the side of the piston handle 22 away from the barrel is used to abut against the On the pusher of the infusion pump.

A scale (not shown in the figure) indicating the moving distance of the nut 41 may be further provided on the outer side of the cylinder 10 along the longitudinal direction of the cylinder 10 to determine the adjustment amount.

When in use, the medicine is sucked into the cylinder body 10, and then according to the situation of the infusion pump, the position of the nut 41 on the cylinder body 10 is adjusted to ensure that the stroke of the infusion pump has not yet come to an end after the medicine is infused. After the cylinder is clamped on the infusion pump, the first side of the nut 41 abuts against the clamping part of the infusion pump, and the second side of the piston handle 22 abuts against the propulsion part of the infusion pump. Under the push of the needle, the medicine flows out from the nipple 30 of the syringe, and enters into the patient's body through the catheter connected with the nipple 30 .

The utility model can change the actual travel length of the infusion pump by adjusting the position of the nut on the premise that the stroke of the infusion pump does not change, so as to realize the complete infusion of medicines.

Claims (2)

1. a kind of syringe for infusion pump, including cylinder, the first end of cylinder is formed with nipple, outside the second end of cylinder Side is formed with protrusion, and piston component is slideably formed in cylinder, and piston head is arranged on the first end of piston component, piston Handle is arranged on the second end of piston component；It is characterized in that：

Cylinder-shaped becomes cylindrical shape, and predetermined length is formed on longitudinal direction of the one end of protrusion in cylinder on the outside of cylinder External screw thread；Nut is further provided on cylinder, the internal thread of nut is incorporated on the external screw thread of the cylinder, is achieved in Position of the nut on cylinder is adjusted；The side of the separate protrusion of nut is used to be resisted against the holding section of infusion pump；Piston The side of the separate cylinder of handle is used to be resisted against the promotion part of infusion pump.

2. it to be used for the syringe of infusion pump as described in claim 1, it is characterised in that：Along the vertical of cylinder on the outside of the cylinder To the scale for being further provided with instruction nut displacement distance.