Patent EP0168675A1 successfully refreshed from Google Patents.
EP0168675A1
Expired / Lapsed
EP
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Finger actuated medication infusion system
Assignee: Fischell David R
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Filing: 1985-06-21
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Granted: —
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Expires: 2005-06-21
Abstract
Abstract A Finger Actuated Medication Infusion System (FAMIS) (5) for delivering a dosage of medication into a living body. The FAMIS is fully mechanical and comprises a reservoir (10), a pump (60) and connecting catheters (58). The reservoir (10) includes a sealed bellows portion (21) which contains a pressurant and exerts a substantially constant pressure on the medication in the reservoir (10), regardless of the amount of medication therein. The pump (60) includes a bellows assembly (81) disposed within an equalizing pressure chamber (63), and will deliver medication through the bellows assembly (81) at a predetermined flow rate independent of ambient temperature, ambient pressure or the amount of medication remaining in the reservoir (10). The FAMIS design also provides safeguards against inadvertant overdosing, transmission of bacteria into the body and prevents gas bubbles within the reservoir (10) from impeding the flow of medication through an outlet flow restrictor (98) which forms part of the FAMIS pump (60).
Inventors
- 👤 David R. Fischell
- 👤 Tim A. Fischell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 10:58
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/168; A61M5/16877; A61M5/142; A61M5/14212; A61M5/1424; A61M5/14244; A61M2005/14264; Y; Y10; Y10S; Y10S128/00; Y10S128/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
162 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body; pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; dosing means disposed within said pump means for providing a predetermined dosage of medication for delivery into the living body, said predetermined dosage corresponding to a single manual actuation of said pump means; and limiting means connected to said dosing means for limiting the dosage rate to said predetermined maximum, regardless of the number of times said pump means is actuated, thereby ensuring that the maximum dosage of medication is maintained at a safe level for any given period of time.
Claim 2
Independent Claim
162 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body; pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; dosing means disposed within said pump means for providing a predetermined dosage of medication for delivery into the living body, said predetermined dosage corresponding to a single manual actuation of said pump means; and limiting means connected to said dosing means for limiting the dosage rate to said predetermined maximum, regardless of the number of times said pump means is actuated, thereby ensuring that the maximum dosage of medication is maintained at a safe level for any given period of time.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1, wherein the dosage rate is limited to said predetermined maximum by the combined effect of both said dosing means and said limiting means.
Claim 4
Independent Claim
121 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body; pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; and a bellows assembly disposed within said pump means for providing a predetermined dosage of medication for delivery into the living body, said bellows assembly being constructed of titanium, said predetermined dosage rate thereby being essentially independent of ambient temperature.
Claim 5
Independent Claim
121 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body; pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; and a bellows assembly disposed within said pump means for providing a predetermined dosage of medication for delivery into the living body, said bellows assembly being constructed of titanium, said predetermined dosage rate thereby being essentially independent of ambient temperature.
Claim 6
Independent Claim
167 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body: pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; dosing means disposed within said pump means for providing a predetermined dosage of medication for delivery into the living body, said predetermined dosage corresponding to a single manual actuation of said pump means; said reservoir having a valve assembly connecting with said connecting means, said valve assembly providing a seal for said reservoir and remaining closed except when said pump means is actuated; and said pump means including an incompressible fluid surrounding said dosing means, said predetermined dosage rate thereby being essentially independent of ambient pressure.
Claim 7
Independent Claim
167 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body: pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; dosing means disposed within said pump means for providing a predetermined dosage of medication for delivery into the living body, said predetermined dosage corresponding to a single manual actuation of said pump means; said reservoir having a valve assembly connecting with said connecting means, said valve assembly providing a seal for said reservoir and remaining closed except when said pump means is actuated; and said pump means including an incompressible fluid surrounding said dosing means, said predetermined dosage rate thereby being essentially independent of ambient pressure.
Claim 8
Independent Claim
142 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body; pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; said reservoir having a valve assembly connecting with said connecting means, said valve assembly providing a seal for said reservoir; and said pump means having a valve assembly connecting with said connecting means, said reservoir valve assembly and said pump means valve assembly remaining closed except when said pump means is actuated, said connecting means thereby maintaining a positive pressure therein.
Claim 9
Independent Claim
142 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body; pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; said reservoir having a valve assembly connecting with said connecting means, said valve assembly providing a seal for said reservoir; and said pump means having a valve assembly connecting with said connecting means, said reservoir valve assembly and said pump means valve assembly remaining closed except when said pump means is actuated, said connecting means thereby maintaining a positive pressure therein.
Claim 10
Independent Claim
106 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body; pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; and filter means disposed upstream from said pumping means for preventing the passage of bacteria and gas bubbles from said reservoir into said pump means.
Claim 11
Independent Claim
106 words
An apparatus for delivering a flow of medication into a living body, said apparatus comprising: a medication reservoir for holding said medication in readiness for delivery into said living body; pump means for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into said living body, said pump means being manually actuatable; connecting means for facilitating passage of said medication from said reservoir to said pump and communicating therebetween; and filter means disposed upstream from said pumping means for preventing the passage of bacteria and gas bubbles from said reservoir into said pump means.
Claim 12
Dependent Claim
84 words
The apparatus of claim 1, wherein: said pump means comprises a top diaphragm and a bottom shell defining an equalizing pressure chamber therebetween; said dosing means comprises a bellows assembly; said pump means includes an inlet portion and an exit portion, said bellows disposed adjacent said inlet portion and said exit portion and communicating therewith, said bellows including actuator means for manually initiating the flow of said medication; and said inlet portion, said exit portion and said bellows being disposed within said pressure chamber.
Claim 13
Dependent Claim
135 words
A medication reservoir for use in combination with a pump for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into a living body, said reservoir comprising: a top and bottom portion defining a medication chamber therebetween; a septum disposed on said top portion for facilitating introduction of said medication into said medication chamber; an enclosed bellows assembly disposed within said medication chamber and attached to said bottom portion, said bellows assembly having an interior chamber; said interior chamber containing a pressurant, said bellows assembly thereby exerting a substantially constant pressure on said medication regardless of the amount of medication in said medication chamber; and a valve assembly communicating with said medication chamber for facilitating removal of said medication from said medication chamber.
Claim 14
Dependent Claim
135 words
A medication reservoir for use in combination with a pump for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into a living body, said reservoir comprising: a top and bottom portion defining a medication chamber therebetween; a septum disposed on said top portion for facilitating introduction of said medication into said medication chamber; an enclosed bellows assembly disposed within said medication chamber and attached to said bottom portion, said bellows assembly having an interior chamber; said interior chamber containing a pressurant, said bellows assembly thereby exerting a substantially constant pressure on said medication regardless of the amount of medication in said medication chamber; and a valve assembly communicating with said medication chamber for facilitating removal of said medication from said medication chamber.
Claim 15
Dependent Claim
113 words
A pump, for use in combination with a medication reservoir, for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into a living body, said pump comprising: dosing means for providing a predetermined dosage of medication for delivery into the living body, said predetermined dosage corresponding to a single, manual actuation of said pump; and limiting means connected to said dosing means for limiting the dosage rate to said predetermined maximum, regardless of the number of times said pump is actuated, thereby ensuring that the maximum dosage of medication is maintained at a safe level for any given period of time.
Claim 16
Dependent Claim
113 words
A pump, for use in combination with a medication reservoir, for receiving medication from said reservoir and for mechanically delivering said medication at a predetermined decaying dosage rate having a predetermined maximum into a living body, said pump comprising: dosing means for providing a predetermined dosage of medication for delivery into the living body, said predetermined dosage corresponding to a single, manual actuation of said pump; and limiting means connected to said dosing means for limiting the dosage rate to said predetermined maximum, regardless of the number of times said pump is actuated, thereby ensuring that the maximum dosage of medication is maintained at a safe level for any given period of time.
Claim 17
Dependent Claim
13 words
The pump of claim 9, wherein said dosing means comprises a bellows assembly.
Claim 18
Dependent Claim
48 words
The pump of claim 10, wherein said dosing means includes an actuator means and said bellows assembly has convolutions which are compressed in a rest state, expand in response to manual operation of said actuator means, and retract to cause delivery of said medication into the living body.
Claim 19
Dependent Claim
48 words
The pump of claim 10, wherein said dosing means includes an actuator means and said bellows assembly has convolutions which are expanded in a rest state, retract in response to manual operation of said actuator means, and expand to cause delivery of said medication into the living body.
Claim 20
Dependent Claim
107 words
The pump of claim 9, wherein said pump comprises: a pressure chamber; a bellows assembly having convolutions fixedly mounted at one end and connected at an opposite end to a movable support member; an actuator plate disposed above said pressure chamber; and means for connecting said actuator plate to said movable support member; said convolutions of said bellows assembly being operated from a rest state to an operative state by depression of said actuator plate, connecting means and movable support member, to draw medication fluid into said pressure chamber and said convolutions subsequently returning to said rest state to dispense the medication fluid from said pressure chamber.
Claim 21
Dependent Claim
74 words
The pump of claim 9, wherein said pump further comprises: a top diaphragm and a bottom shell defining an equalizing pressure chamber therebetween; said dosing means being disposed in said equalizing pressure chamber; and said equalizing pressure chamber including an incompressible fluid, said fluid causing any variation in ambient pressure exerted on said top diaphragm also to be exerted on said dosing means, said medication flow rate thereby being essentially independent of ambient pressure.
References Cited (Backward Citations)
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