Jet injector with data logging system for use in compliance and dose monitoring programs
First Claim
1. A system for determining the time duration (Δ
- t) of an injection for use in a compliance monitoring program, said system comprising;
a fluid medicament injector having a first switch for changing states at the start of an injection and a second switch for changing states at the end of an injection; and
an electronic clock connected to said first and second switches to establish an injection start time (to) in response to said first switch changing states and an injection end time (te) in response to said second switch changing states, said start time (to) and said end time (te) for calculating the time duration (Δ
t) where Δ
t=te−
to.
3 Assignments
0 Petitions
Accused Products
Abstract
An integral data logging system for a jet injector includes at least one electrical switch that changes state (e.g. from OFF to ON) during an injection procedure. The switch(es) are connected to an electrical circuit having a microprocessor, a clock and an electronic memory. When a switch changes state, this information along with the applicable date and time is recorded in the electronic memory. A communications link is provided to upload the stored data to a remote computer for subsequent manipulation and analysis to determine compliance with a prescribed dosing regimen. In one implementation, the injection duration is logged by using a trigger release switch and an end-of-stroke switch. The end-of-stroke switch is configured to change state after the drive bar of the injector transits through the injector tube. The injection duration is indicative of dose amount and can be used to distinguish between valid and invalid injections.
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Citations
21 Claims
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1. A system for determining the time duration (Δ
- t) of an injection for use in a compliance monitoring program, said system comprising;
a fluid medicament injector having a first switch for changing states at the start of an injection and a second switch for changing states at the end of an injection; and
an electronic clock connected to said first and second switches to establish an injection start time (to) in response to said first switch changing states and an injection end time (te) in response to said second switch changing states, said start time (to) and said end time (te) for calculating the time duration (Δ
t) where Δ
t=te−
to. - View Dependent Claims (2, 3, 4, 5, 6)
- t) of an injection for use in a compliance monitoring program, said system comprising;
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7. An integral vacuum control and data logging system for a fluid medicament injector having an injector tip, said system comprising:
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an electrical power source;
a vacuum pump for producing a suction at the injector tip;
at least one switch mounted on said injector for changing state during an injection procedure; and
an electrical circuit for selectively passing a current from said power source to said vacuum pump and for establishing the time at which said switch changes states during an injection procedure, said time for use in a compliance monitoring program. - View Dependent Claims (8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 20, 21)
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14. A system for preventing injections from an injector having a tip when the injector tip is not in contact with a surface, said system for use in a compliance monitoring program, said system comprising:
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a safety mounted on said injector, said safety being reconfigurable between a first configuration wherein said injector is prevented from firing and a second configuration wherein said injector is armed;
a vacuum pump for establishing a vacuum at the injector tip to hold the injector tip against the surface during an injection;
a sensor for determining whether a predetermined vacuum level is present at the injector tip indicating that the injector tip is in contact with the surface; and
a means responsive to said sensor for reconfiguring said safety to arm said injector when said predetermined vacuum level is present at the injector tip.
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19. A system for determining the dose amount of an injection for use in an injection monitoring program, said system comprising:
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a fluid medicament injector having a fluid chamber and a syringe plunger for expelling fluid medicament form said fluid chamber;
means for sensing position information about said syringe plunger prior to an injection; and
means connected to said sensing means for recording said position information to determine an injection dose amount.
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Specification