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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0077889 (1993-06-11) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 254 인용 특허 : 0 |
Apparatus located in an implantable medication infusion pump for quickly and easily detecting a condition adversely affecting medication delivery in the implantable medication infusion pump is disclosed which can reliably detect occurrences including an occluded catheter, the presence of air in the
Apparatus located in an implantable medication infusion pump for quickly and easily detecting a condition adversely affecting medication delivery in the implantable medication infusion pump is disclosed which can reliably detect occurrences including an occluded catheter, the presence of air in the pumping mechanism, and the failure of the pumping mechanism. The system uses the amplitude of an acoustic signal generated by operation of the pumping mechanism as compared with a baseline signal to detect an encapsulated or occluded catheter or air in the fluid line. In addition, the system can detect a partially encapsulated or occluded catheter by detecting repeated downward slope patterns during repetitive, closely spaced pumping cycles.
An implantable medication infusion pump including apparatus for diagnosing a system malfunction, comprising: a reservoir for containing a fluid medication; means for transferring said fluid medication from said reservoir to a location outside said implantable medication infusion pump; means located
An implantable medication infusion pump including apparatus for diagnosing a system malfunction, comprising: a reservoir for containing a fluid medication; means for transferring said fluid medication from said reservoir to a location outside said implantable medication infusion pump; means located in said implantable medication infusion pump adjacent to said transferring means for generating electrical signals proportional to acoustic signals generated by said transferring means; means for processing said electrical signals to produce processed electrical signals; logic means for utilizing a characteristic related to the relative amplitude of said processed electrical signals to determine the operational condition of the implanted medication infusion pump, said logic means providing a first informational signal if said processed electrical signals are greater than or equal to a first predetermined value, said logic means providing a second informational signal if said processed electrical signals are smaller than or equal to a second predetermined value, said second predetermined value being smaller than said first predetermined value; and means for providing an informational signal if said logic means determines the existence of a system malfunction.
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