On-body injector and method of use
First Claim
1. An on-body injector for use with a patient with an injection device having an injection port in fluid communication with a delivery tube, the injection port lying on an injection axis, the on-body injector comprising:
- a bolus reservoir;
a bolus injection needle in fluid communication with the bolus reservoir, the bolus injection needle having a bolus injection needle tip aligned with the injection port, the bolus injection needle being slideably biased away from the injection port to define a gap between the bolus injection needle tip and the injection port; and
a button operably connected to the bolus injection needle to slide the bolus injection needle along the injection axis;
wherein the button is operable to advance the bolus injection needle tip to close the gap and advance the bolus injection needle tip into the injection port to form an injection flow path from the bolus reservoir, through the bolus injection needle, through the delivery tube, and into the patient;
wherein the button is further operable to advance a plunger through the bolus reservoir to deliver a predetermined bolus volume to the patient through the injection flow path; and
wherein the plunger blocks the injection flow path when the plunger is at a final position in the bolus reservoir when the predetermined bolus volume has been delivered.
1 Assignment
0 Petitions
Accused Products
Abstract
An on-body injector and method of use including an on-body injector for use with an injection device. The on-body injector includes a bolus reservoir; a bolus injection needle in fluid communication with the bolus reservoir, the bolus injection needle having a bolus injection needle tip aligned with the injection port, the bolus injection needle being slideably biased away from the injection port to define a gap between the bolus injection needle tip and the injection port; and a button operably connected to the bolus injection needle to slide the bolus injection needle along the injection axis. The button is operable to advance the bolus injection needle tip to close the gap and advance the bolus injection needle tip into the injection port. The button is further operable to advance a plunger through the bolus reservoir to deliver a predetermined bolus volume to the patient through the injection flow path.
94 Citations
17 Claims
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1. An on-body injector for use with a patient with an injection device having an injection port in fluid communication with a delivery tube, the injection port lying on an injection axis, the on-body injector comprising:
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a bolus reservoir; a bolus injection needle in fluid communication with the bolus reservoir, the bolus injection needle having a bolus injection needle tip aligned with the injection port, the bolus injection needle being slideably biased away from the injection port to define a gap between the bolus injection needle tip and the injection port; and a button operably connected to the bolus injection needle to slide the bolus injection needle along the injection axis; wherein the button is operable to advance the bolus injection needle tip to close the gap and advance the bolus injection needle tip into the injection port to form an injection flow path from the bolus reservoir, through the bolus injection needle, through the delivery tube, and into the patient; wherein the button is further operable to advance a plunger through the bolus reservoir to deliver a predetermined bolus volume to the patient through the injection flow path; and wherein the plunger blocks the injection flow path when the plunger is at a final position in the bolus reservoir when the predetermined bolus volume has been delivered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An on-body injector for use with a patient with an injection device having an introducer port in fluid communication with a delivery tube, the on-body injector comprising:
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a pressurized reservoir; a flow restrictor disposed between the pressurized reservoir and the delivery tube, the flow restrictor being tubing having a length and interior diameter selected to provide a desired pressure drop a fill port in fluid communication with the pressurized reservoir; and a housing defining an interior track, wherein the pressurized reservoir is a spring coil operable to at least partially uncoil within the interior track when the pressurized reservoir is at least partially filled with a therapeutic agent. - View Dependent Claims (12, 13, 14)
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15. A method of use for an on-body injector with an injection device for delivering a predetermined bolus volume to a patient, the method comprising:
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deploying the injection device in the patient, the injection device having a delivery tube placed in the patient and an injection port in fluid communication with the delivery tube; securing the on-body injector to the injection device, the on-body injector having a bolus injection needle aligned with and spaced apart from the injection port; depressing a button on the on-body injector to advance the bolus injection needle into the injection port further depressing the button to deliver the predetermined bolus volume from the on-body injector through the bolus injection needle, through the delivery tube, and into the patient; and releasing the button to retract the bolus injection needle from the injection port. - View Dependent Claims (16, 17)
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Specification