发明名称 |
Implantable demand medication delivery assembly |
摘要 |
An implantable demand medication delivery assembly for delivering measured aliquots of liquid medication. The assembly includes a reservoir which stores the liquid medication to be delivered. The assembly also includes a pump which is in fluid communication with the reservoir. The pump includes a housing having an inlet port in fluid communication with the reservoir and an outlet port. Connected to the outlet port is a delivery catheter for delivering the liquid medication to a site within the patient wherein the assembly is implanted. The pump also includes a fluid passage which extends between the inlet and outlet port. A chamber is provided along the fluid passage for containing a preselected volume of liquid medication to be delivered. A resilient deformable wall on the pump extends over the chamber. A one-way valve is provided in the fluid passage between the inlet port and chamber for permitting fluid flow toward the chamber. A pressure regulated valve is provided in the fluid passage between the chamber and outlet port for selectively permitting fluid flow through the delivery catheter upon actuation of the pump. A puncturable and resealable injection site can also be part of the assembly and, when part of the assembly, is in fluid communication with the reservoir.
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申请公布号 |
US4634427(A) |
申请公布日期 |
1987.01.06 |
申请号 |
US19840646998 |
申请日期 |
1984.09.04 |
申请人 |
AMERICAN HOSPITAL SUPPLY COMPANY |
发明人 |
HANNULA, DONALD L.;COE, FREDERICK L. |
分类号 |
A61M1/00;A61M5/142;(IPC1-7):A61M5/00 |
主分类号 |
A61M1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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