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Embedded type chargeable sustained-release administration pump

A drug delivery and sustained-release technology, which is applied in the direction of drug devices and other medical devices, can solve the problems of inconvenient washing or inspection, incapable of sustained-release drug delivery, etc., and achieves easy suture fixation and puncture positioning, simple structure, and improved Effects on quality of life

Inactive Publication Date: 2009-08-12
徐泱 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patents 88217604, 01241414, 94239006, 200520025513, etc. respectively disclose drug delivery devices that can be embedded in the human body, but they are not only different in structure from the present invention, but also cannot be sustained release drug delivery or can not be easily washed or inspected

Method used

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  • Embedded type chargeable sustained-release administration pump
  • Embedded type chargeable sustained-release administration pump

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the structure of the present utility model is described in further detail:

[0020] attached figure 1 and 2 It is a structural schematic diagram of the sustained-release drug delivery pump of the present invention, which includes a pump body 2 , a puncture membrane 7 , a sieve plate 5 , an elastic membrane 3 , an inner catheter 6 , a diversion valve 11 and an overload valve 9 . Among them, the pump body 2 and the puncture membrane 7 form an inner cavity by the fixed sealing ring 10 through embedding or adhesion, and the inner cavity is divided into two parts: the upper chamber 6 and the lower chamber 4 by the sieve plate 5; Elastic film 3 is arranged, and this elastic film 3 completely covers sieve plate 5 and can expand in lower chamber 4, and after injecting medicinal liquid in upper chamber 6, medicinal liquid flows into lower chamber 4 through the sieve hole on sieve plate 5 and can make The elastic membrane 3 deform...

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Abstract

The invention relates to a slow release dosing pump which is buried in a human body and pressed through the deformation of an elastic membrane, comprising a pump body, a puncture membrane, a sieving plate, an elastic membrane, an internal duct, a diverting valve and an overload valve. The invention is characterized in that: the pump body and the puncture membrane form an inner cavity by a fixing sealing ring through embedded pressing or adhering, the inner cavity is divided into two parts, namely an upper chamber and a lower chamber, by the sieving plate; the lower chamber is provided with the elastic membrane which is coated on the sieving plate completely and can swell in the lower chamber, and after being injected into the upper chamber, the liquid medicine flows into the lower chamber through the sieving pores of the sieving plate and causes the elastic membrane to deform and swell until fully filling the lower chamber; in addition, the upper chamber is communicated with the exterior of the pump by the internal duct which is provided with the diverting valve and the overload valve, the flow speed of the liquid medicine in the upper chamber and the lower chamber to the exterior of the pump can be controlled by using the resiliency produced by the deformation of the elastic membrane and adjusting the diverting valve and the overload valve. The slow release dosing pump can precisely control the flow speed of the liquid medicine, has the function of pressure overload washing and the characteristics of simple structure, durable using and convenient maintenance. The medicine can be repeatedly filled through the skin, being convenient for patients to use.

Description

technical field [0001] The invention relates to a medical device for slow-release drug delivery, which belongs to medical equipment. Specifically, the invention relates to a slow-release drug pump embedded in the human body and exerted pressure through the deformation of the elastic membrane, which can be filled repeatedly liquid medicine. Background technique [0002] In the existing medical process, certain diseases (such as malignant tumors, endocrine diseases, etc.) usually require long-term injections, and patients must come to the hospital or medical institution for injections every other day or even several times a day. , life brings great inconvenience, and the injection site may also have adverse reactions such as induration and ulceration due to long-term repeated injections; in addition, due to the short half-life of some drugs in the body, intermittent large-dose administration is difficult to maintain the effect in the body Concentration, and the toxic and side...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M31/00
Inventor 徐泱樊嘉
Owner 徐泱
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