Implantable infusion pump

Abstract

The invention discloses an implantable infusion pump and belongs to the technical field of microfluid control medical equipment.The implantable infusion pump comprises a shell, an elastic medicine bag capable of storing energy repeatedly, an active flow valve and a pump control module are arranged in the shell, a liquid medicine inlet and a liquid medicine outlet are formed in the shell, the liquid medicine inlet is connected with an inlet of the elastic medicine bag, and the active flow valve is connected with the pump control module. An inlet of the elastic medicine bag is provided with sealing silica gel, an outlet of the elastic medicine bag is connected with the liquid medicine outlet of the shell through the active flow valve, and the pump control module is in control connection with the active flow valve. Power comes from positive pressure generated when liquid medicine is stored in the elastic medicine bag, micro-flow adjustment is conducted through the active flow valve, medicine is stably output, external energy is not needed, continuous power supply of a battery is not needed in the medicine output period, and therefore consumption of the battery is greatly reduced, and the service life of the pump is greatly prolonged; the safety valve is used for protecting the pressure of the elastic medicine bag from exceeding the set pressure, so that the use safety is improved.

Description

technical field [0001] The invention relates to the technical field of microfluidic control medical equipment, in particular to an implantable infusion pump. Background technique [0002] Implantable drug infusion pumps typically allow for the controlled delivery of drug solutions to designated targets (eg, implanted in areas of subcutaneous fat to deliver pain relievers or insulin, etc.), such as at regular intervals or with The medicine is automatically output continuously in time. When the drug reservoir is depleted, the physician may use, for example, a syringe to refill the drug reservoir while leaving the implanted device in the patient's body. This approach can minimize the surgical incision required for implantation and generally avoid future or repetitive invasive surgical procedures or procedures. In the prior art, a micro-stepping deceleration motor is usually used to drive a micro-peristaltic pump to extract liquid medicine and infuse it into the target site of...

AI Technical Summary

Problems solved by technology

Moreover, the existing drug infusion pumps usually use peristaltic pumps, which are driven by batteries and consume a lot of energy, which is not conducive to implantation into the human body. The service life is limited by the battery capacity. Increasing the battery capacity will increase the volume of the pump and reduce the battery capacity. It will seriously affect the service life of the pump. Once the power is exhausted, the pump needs to be surgically removed and a new pump will be implanted, which brings physical and economic pain to the patient. In addition, the liquid storage chamber of the pump needs to be injected with drugs regularly, which cannot be used in the body. Depending on the situation, how to control the drug injection volume / pressure to avoid damage to the reservoir or leakage is also a problem that needs to be considered

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