MINIATURE PORTABLE MULTIFUNCTIONAL INJECTION DEVICE Russian patent published in 2017 - IPC A61M5/142 

FIELD: medicine.

SUBSTANCE: device contains a vial of liquid and a box-shaped membrane body attached to the supporting frame. The box-shaped membrane body is suitably equipped with a directional input interface and a directional output interface in fluid communication with the vial of liquid and needle via an infusion tube. An elastic membrane is installed in the box-shaped membrane body, and the transmission system is located on the elastic membrane side. The transmission system comprises a miniature DC motor connected to a frequency modulation system. A miniature DC motor is connected to a spiral rectifying device by means of a speed reducer and the spiral rectifying device is connected to the device for membrane reciprocating movement by means of a two-stage shaft. A truncated cone at the front end of the device for membrane reciprocating motion is in contact with the elastic membrane. In the infusion device, the miniaturized DC motor drives the transmission system to allow motion of the device of membrane reciprocating movement, thereby implementing electrical energy conversion to mechanical energy, and implementing the infusion rate adjustment by changing the volume using the device of membrane reciprocating movement compressing the box-shaped membrane body.

EFFECT: reduced device size, increased usability.

10 cl, 6 dwg