Safe injector

Abstract

The invention provides a safe injector, and belongs to the technical field of medical apparatuses and instruments. The safe injector comprises an injecting end, a liquid storing device, a driving device, an energy storage element, an energy converter and a microprocessor, the injecting end is provided with a needle protecting assembly and detachably connected with the liquid storing device, the driving device comprises a power device and a transmission device, and the mutual bounding of a piezoelectric material layer and a substrate layer forms the energy convertor. The safe injector achievesautomatic injecting and meanwhile ensures the accuracy of the liquid inlet amount, the needle protecting assembly can effectively prevent a patient or a nurse in a hospital from being punctured by theneedle tip in the operating porcess, the patient and the nurse can keep away from the infection risk, the energy convertor converts mechanical energy into electric energy, the electric energy can bestored in the energy storing element to be supplied to the power device and the microprocessor, partial energy can be recycled to avoid energy waste, the manpower, the material resources and the financial resources can be saved to a great extent, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a safety syringe. Background technique [0002] The incidence of diabetes is increasing day by day, and it has become the third biggest killer after cardiovascular and cerebrovascular diseases and tumors. At present, it is believed that insulin injection therapy is an effective method for the treatment of diabetes. Intensive treatment through insulin injection can make the patient's blood sugar, blood lipid, blood pressure and BMI fully reach the standard. [0003] At present, insulin pumps and insulin pens are often used to infuse insulin. The invention patent of application number CN201310055639.5 discloses an insulin injection pen, which can be used multiple times through repeated adjustment of the positioning block, rotary spring, and clutch spring. This is a manual injection method, which is inaccurate for the control of the injection dose; the utility model patent...

AI Technical Summary

Problems solved by technology

[0003] At present, insulin pumps and insulin pens are often used to infuse insulin. The invention patent of application number CN201310055639.5 discloses an insulin injection pen, which can be used multiple times through repeated adjustment of the positioning block, rotary spring, and clutch spring. This is a manual injection method, which is inaccurate for the control of the injection dose; the utility model patent with the application number CN201320592093.2 relates to an insulin refill injection pen that can automatically complete the injection action, especially equipped with an automatic control power device, using a single-chip microcomputer and microcomputer The motor, after setting the injection dose, can automatically complete the needle insertion, automatic drug push, and automatic needle withdrawal after subcutaneous stay for 6 seconds, eliminating the patient's fear of injection, but it needs to use the battery to provide power, which will bring trouble to replace the battery ;In addition, the needle tip used with the insulin pen is very small, and the cap wall of the needle cap is too thin, so this kind of needle will easily puncture the side wall of the needle cap during use, which will easily cause patients or hospital nurses to operate There is a great risk of infection when being stabbed by a needle point

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