Dispensing device for medicaments
First Claim
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1. A device for dispensing a medicament comprising:
- an elastic material permeable to the medicament;
a housing for confining the permeable elastic material, said housing having an inlet for connection with a continuous supply of the medicament, and an outlet for delivery;
a reciprocatable piston for repeatedly compressing the permeable elastic material; and
means for reciprocating said piston;
the device being operative with a supply of medicament connected to said inlet to deliver the medicament at a basal rate when the piston is inoperative, and at an augmented rate when the permeable elastic material is repeatedly compressed.
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Abstract
An implantable device for dispensing a medicament in two modes; a basal delivery rate and an augmented rate. The device includes a permeable elastic material adapted to be repeatedly compressed by a solenoid operated piston. The device delivers a basal rate when the piston is inoperative and an augmented rate when the permeable elastic material is compressed. The device is suitable for delivering insulin in an "artificial endocrine pancreas".
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Citations
2 Claims
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1. A device for dispensing a medicament comprising:
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an elastic material permeable to the medicament; a housing for confining the permeable elastic material, said housing having an inlet for connection with a continuous supply of the medicament, and an outlet for delivery; a reciprocatable piston for repeatedly compressing the permeable elastic material; and means for reciprocating said piston; the device being operative with a supply of medicament connected to said inlet to deliver the medicament at a basal rate when the piston is inoperative, and at an augmented rate when the permeable elastic material is repeatedly compressed. - View Dependent Claims (2)
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Specification
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Current AssigneeUniversity of Toronto
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Original AssigneeCanadian Patents and Development Limited
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InventorsSefton, Michael V.
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Primary Examiner(s)Sewell, Paul T.
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Assistant Examiner(s)Feyrer, James R.
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Application NumberUS05/859,314Time in Patent Office925 DaysField of Search128/1.3, 128/213, 128/214 F, 128/218 A, 128/220, 128/DIG. 1, 128/260, 128/2 R, 128/214 E, 128/DIG. 13, 128/234, 128/235, 128/236, 128/237, 128/238 , 128/261, 128/269, 128/215, 401/171, 401/176, 401/179, 401/143US Class Current604/132CPC Class CodesA61M 2005/1405 Patient controlled analgesi...A61M 5/14276 specially adapted for impla...Y10S 128/01 Motorized syringe
