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US 5,957,891 AGranted
Fluid delivery device with fill adapter
AssigneeScience Incorporated
InventorsMarshall S Kriesel, Farhad Kazemzadeh, Matthew B. Kriesel, Steven C. Barber, William J. Kluck, William W. Feng
Life of this patent
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Abstract
A fluid delivery device having a self-contained stored energy membrane for expelling fluids at a precisely controlled rate which is of a compact, laminate construction. The device also includes a novel adapter which is usable to fill the reservoir of the device using a compatable filling syringe apparatus which is mateable with the adapter.
Claims29
A fluid delivery device for infusing medicinal fluids into a patient at a controlled rate comprising:
- (a) a base having a lower surface and a fill port;
- (b) stored energy means for forming, in conjunction with said base, a reservoir having an inlet port and an outlet port, said stored energy means comprising at least one distendable membrane superimposed over said base, said membrane being distendable as a result of pressure imparted by liquids introduced into said reservoir to establish internal stresses, said stresses tending to move said membrane toward a less distended configuration;
- (c) infusion means for infusing medicinal fluids from said fluid reservoir into the patient, said infusion means comprising a hollow cannula having an inlet in communication with said outlet port of said reservoir;
- (d) cover means connected to said base for covering said distendable membrane;
- and
- (e) filling means connected to said base for filling said reservoir, said filling means comprising:
- (i) a septum assembly, including a pierceable septum sealably disposed within said fill port of said base;
- (ii) a filling syringe having a housing, a fluid reservoir within said housing, and a hollow cannula carried by said housing for communication with said fluid reservoir;
- and
- (iii) a fill adapter connected to said lower surface of said base and extending outwardly therefrom, said fill adapter including a wall portion defining an opening closely receiving at least a portion of said housing of said filling syringe.
7 more elements
A fluid delivery device for infusing medicinal fluids into a patient at a controlled rate comprising:
- (a) a base having an upper surface including a central portion and a peripheral portion circumscribing said central portion, a lower surface engageable with the patient and an intermediate portion disposed between said upper and lower surfaces, said intermediate portion having a fill port formed therein;
- (b) stored energy means for forming, in conjunction with said base, a reservoir having an inlet port and an outlet port, said stored energy means comprising at least one distendable membrane superimposed over said base, said membrane being distendable as a result of pressure imparted by liquids introduced into said reservoir to establish internal stresses, said stresses tending to move said membrane toward a less distended configuration;
- (c) infusion means for infusing medicinal fluids from said fluid reservoir into the patient, said infusion means comprising a hollow cannula having an inlet in communication with said outlet port of said reservoir;
- (d) cover means connected to said base for covering said distendable membrane;
- and
- (e) filling means connected to said base for filling said reservoir, said filling means comprising:
- (i) a septum assembly, including a pierceable septum sealably disposed within said fill port of said base;
- (ii) a filling syringe, including a housing, a container having a fluid reservoir disposed within said housing and a hollow piercing needle carried by said housing for communication with said fluid reservoir;
- and
- (iii) a fill adapter connected to said lower surface of said base, said fill adapter including an upper wall portion and a lower wall portion defining an opening closely receiving at least a portion of said housing of said filling syringe, at least a part of said fill adapter being removable from said base.
7 more elements
A fluid delivery device for infusing medicinal fluids into a patient at a controlled rate comprising:
- (a) a base having an upper surface including a central portion and a peripheral portion circumscribing said central portion, a lower surface engageable with the patient and an intermediate portion disposed between said upper and lower surfaces, said intermediate portion having a fill port formed therein;
- (b) stored energy means for forming, in conjunction with said base, a reservoir having an inlet port and an outlet port, said stored energy means comprising at least one distendable membrane superimposed over said base, said membrane being distendable as a result of pressure imparted by liquids introduced into said reservoir to establish internal stresses, said stresses tending to move said membrane toward a less distended configuration;
- (c) infusion means for infusing medicinal fluids from said fluid reservoir into the patient, said infusion means comprising a hollow cannula having an inlet in communication with said outlet port of said reservoir;
- (d) flow control means disposed between said reservoir and said infusion means for controlling liquid flow from said reservoir;
- (e) cover means connected to said base for covering said distendable membrane;
- and
- (f) filling means connected to said base for filling said reservoir, said filling means comprising:
- (i) a septum assembly, including a septum housing receivable within said fill port of said base and an elastomeric, pierceable core sealably disposed within said septum housing;
- (ii) a filling syringe, including a housing, a container having a fluid reservoir disposed within said housing and a hollow piercing needle carried by said housing for communication with said fluid reservoir;
- and
- (iii) a fill adapter removably connected to said lower surface of said base, said fill adapter including an upper wall portion and a lower wall portion defining an opening closely receiving at least a portion of said housing of said filling syringe, at least a part of said fill adapter being removable from said base.
8 more elements
Dependencies are inferred from the claim text.