Insulin pump

Abstract

The present invention relates to an automatic insulin injector, which can be a rotary shaft only as a piston advance device to remove the vertical load imposed on the rotary shaft, thereby improving durability. The automatic insulin injector comprises: a syringe having a water injector containing insulin therein, and a piston inserted into the rear end of the water injector to provide the water injector with discharge pressure of insulin; a syringe receiving The housing of the space, the syringe receiving space has a partition wall formed at the rear end thereof; a rotating shaft having a non-circular cross-section and a predetermined length; a power supply device for rotating the rotating shaft at a predetermined speed; one providing advancement of the piston by pushing the piston A powered push plate assembly, the push plate assembly having a disc portion formed with an external thread on its outer circumferential surface, and an engagement hole axially coupled with a rotating shaft at its central portion, through which the rotating shaft can move back and forth; and A hollow cylindrical push plate housing, which is inserted into the syringe receiving space at the rear end of the water injector, allowing the piston to pass therethrough, the push plate housing is formed with an inner thread on the inner circumferential surface, which engages with the outer thread of the disc-shaped portion , so that the disc-shaped portion spirally moves back and forth.

Description

technical field [0001] The present invention relates to an automatic insulin injector, especially an automatic insulin injector, which can reduce the load on the rotating shaft that provides the forward power for the piston, thereby improving the durability. Background technique [0002] Usually, in the treatment of injecting drugs to diabetic patients, the diabetic patients or their protectors inject insulin into the patient's body two to three times a day. At this time, the amount of insulin required by the patient will vary depending on the frequency and the patient's physical condition. For example, more insulin is needed during meals than usual. However, the traditional method of manually injecting insulin has many disadvantages, because it is impossible to inject an accurate amount to the patient, and it is more troublesome for the patient to go to the hospital to inject insulin than usual. [0003] In order to overcome the above-mentioned shortcomings, Korean Patent...

AI Technical Summary

Problems solved by technology

[0006] However, conventional automatic insulin injectors have a problem that when the rotary shaft is directly connected to the piston to drive the piston, a lot of vertical load is applied to the rotary shaft, thereby impairing the durability of the rotary shaft

Moreover, the conventional automatic insulin injector has another problem that when the diameter of the rotating shaft is reduced, the connecting area of ​​the external thread of the rotating shaft and the internal thread of the pushing member is relatively reduced, so that the piston cannot perform a stable and smooth forward movement.

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