Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
1999-05-04
2001-09-04
Mendez, Manuel (Department: 3763)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
Reexamination Certificate
active
06283938
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a medicating bandage in which the application of a medication is controlled by a controllable permeable membrane in response to a sensed biological condition of a patient being medicated.
It has been proposed heretofore to supply medication to a patient through the use of a medicating bandage, in which a supply of a medication is contained within a pad forming a part of a bandage and is released to the surface of the pad and to the skin of a patient to whom or to which the bandage is applied. This technology has been implemented, for example, in connection with medications intended for pain and nausea relief as well as for some more controlled medications used in treatment of other conditions.
Bandage dosage technology, as developed up until the time of this invention, has relied upon delivery of the medication under the control essentially of only physical parameters set at the time of manufacture of the medicating bandage. By determining the physical characteristics of the bandage, a designer may select dosage levels and durations. While this limited level of dosage control has enabled commercially acceptable products, it is recognized that such medicating bandages have been incapable of adapting dosage processes to what may be changing patient conditions.
It has also been proposed heretofore to render a bandage “intelligent” to the limited extent of providing, in the bandage itself, a sensor which is capable of registering certain events and signaling occurrences of those events.
SUMMARY OF THE INVENTION
In accordance with the invention described more fully hereinafter, a medicating bandage which has a limited level of intelligence through the inclusion of a sensor is provided with extended capabilities so as to enable metered release of medication. This purpose is achieved by providing a controllable permeable member which is interposed between the medication contained in a bandage pad and the surface of the pad which contacts the skin of a patient being medicated. The controllable permeable member is connected with and responsive to the sensor, so that the release of medication from the bandage is metered in response to conditions sensed from the body of the patient undergoing medication.
In particular, it is contemplated that the sensor and the controllable permeable membrane be electrically operable, and that they be joined through a control circuit contained within the bandage pad which governs the release of medication in accordance with a sensed biological condition of the patient.
The combination of a sensor and a controllable permeable membrane are deemed to have usefulness outside of the medicating application.
REFERENCES:
patent: 4322232 (1982-03-01), Beane
patent: 5697896 (1997-12-01), McNichols et al.
patent: 5730721 (1998-03-01), Hyatt et al.
patent: 5879292 (1999-03-01), Steinberg et al.
patent: 6030827 (2000-02-01), Davis et al.
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