US4350155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Body implantable medical infusion system
Assignee: Medtronic Inc
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Filing: 1980-04-02
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Granted: 1982-09-21
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Expires: 2000-04-02
Abstract
Abstract A body implantable medical infusion system including an infusate reservoir, a system for regulating infusate discharge and a catheter for delivery of discharged infusate to the desired infusion site. An unregulated infusate discharge is prevented, in a preferred embodiment, by a normally open valve positioned intermediate the pump and the catheter, the valve closing in response to the sensing of unregulated infusate. A sensor, to which the valve responds, may be positioned at the output of the pump or at any other location within the system to sense infusate leakage. The valve may be additionally closed in response to an externally generated signal.
Inventors
- 👤 Howard J. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/14244; A61M5/14276; A61M2205/00; A61M2205/35; A61M2205/3507; A61M2205/3523; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1804
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
68 words
In a body implantable medical infusion system of the type having an infusate reservoir, means for regulating infusate discharge and catheter means for delivering discharged infusate to a desired infusion site, the improvement which comprises further means for preventing an unregulated infusate discharge including normally open valve means, means for sensing the presence of unregulated infusate and means responsive to said sensing means for closing said valve means.
Claim 2
Dependent Claim
68 words
In a body implantable medical infusion system of the type having an infusate reservoir, means for regulating infusate discharge and catheter means for delivering discharged infusate to a desired infusion site, the improvement which comprises further means for preventing an unregulated infusate discharge including normally open valve means, means for sensing the presence of unregulated infusate and means responsive to said sensing means for closing said valve means.
Claim 3
Dependent Claim
22 words
The body implantable medical infusion system of claim 1 further comprising means for closing said valve means via an externally generated signal.
Claim 4
Dependent Claim
31 words
The body implantable medical infusion system of claim 2 further comprising means for sensing the presence of unregulated infusate and means responsive to said sensing means for closing said valve means.
Claim 5
Dependent Claim
37 words
The body implantable medical infusion system of claim 1 wherein said infusate discharge regulating means comprises pump means having an infusate input and output, said sensing means sensing the presence of infusate adjacent the pump means output.
Claim 6
Dependent Claim
23 words
The body implantable medical infusion system of claim 4 wherein said valve means is connected intermediate said pump means and said catheter means.
Claim 7
Dependent Claim
22 words
The body implantable medical infusion system of claim 5 further comprising means for closing said valve means via an externally generated signal.
Claim 8
Dependent Claim
80 words
In a body implantable medical infusion system of the type having an infusate reservoir, means for regulating infusate discharge and catheter means for delivering discharged infusate to a desired infusion site, the improvement which comprises further means for preventing an unregulated infusate discharge including means for blocking the flow of infusate to said catheter means on the occurrence of a predetermined event, and further comprising means for sensing infusate leakage within said system, said predetermined event comprising sensed infusate leakage.
Claim 9
Dependent Claim
80 words
In a body implantable medical infusion system of the type having an infusate reservoir, means for regulating infusate discharge and catheter means for delivering discharged infusate to a desired infusion site, the improvement which comprises further means for preventing an unregulated infusate discharge including means for blocking the flow of infusate to said catheter means on the occurrence of a predetermined event, and further comprising means for sensing infusate leakage within said system, said predetermined event comprising sensed infusate leakage.
Claim 10
Dependent Claim
20 words
The body implantable medical infusion system of claim 7 wherein said infusate flow blocking means comprises normally open valve means.
Claim 11
Dependent Claim
22 words
The body implantable medical infusion system of claim 7 wherein said predetermined event further comprises the external generation of a preselected signal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-20 | 1986-03-22 | 1986-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-20 | 1990-03-22 | 1990-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-20 | 1994-03-22 | 1994-09-21 | $7700.00 | Window Closed / Lapsed |