Medication fluid infusion set component with integrated physiological analyte sensor, and corresponding fluid infusion device
First Claim
1. A medical device component for delivering medication fluid to a patient, the medical device component comprising:
- a body-mountable base unit comprising;
a base structure;
a lid assembly affixed and sealed to the base structure;
a body-insertable cannula that accommodates delivery of medication fluid to the patient, the cannula having an upstream end securely attached to the base structure and having a downstream end extending from the base structure;
a self-sealing septum coupled to the base structure to fluidly seal the upstream end of the cannula, wherein the self-sealing septum is maintained in position between the base structure and the lid assembly;
a body-insertable physiological analyte sensor secured to and extending from the base structure, the sensor facilitating measurement of a physiological characteristic of the patient, and the sensor comprising a plurality of sensor leads; and
an electronics assembly coupled to the base structure, the electronics assembly electrically connected to the sensor leads to obtain measurements of the physiological characteristic in an analog domain, and the electronics assembly comprising a digital processing circuit to convert measurements of the physiological characteristic from the analog domain into digital sensor data, to digitally process the digital sensor data into conditioned digital sensor data, and to communicate the conditioned digital sensor data to a fluid infusion device associated with the medical device component; and
a top cover assembly that is removably couplable to the body-mountable base unit such that the top cover assembly covers the lid assembly of the body-mountable base unit, the top cover assembly comprising;
a lid structure that releasably mates with the base structure, the lid structure comprising an interior space defined by an inner surface of the lid structure, and the lid structure comprising at least one structural support feature;
an infusion tube secured to the inner surface of the lid structure and terminating within the interior space, wherein the at least one structural support feature of the lid structure receives, secures, and retains a downstream end of the infusion tube;
a tubing connector fluidly coupled to the infusion tube, the tubing connector having a distal end supported by the at least one structural support feature of the lid structure, the distal end of the tubing connector penetrating the self-sealing septum to establish a fluid delivery flow path from inside the infusion tube, through the self-sealing septum, and into the cannula when the top cover assembly is coupled to the body-mountable base unit, wherein the self-sealing septum seals the upstream end of the cannula when the top cover assembly is removed from the body-mountable base unit and the tubing connector is withdrawn from the self-sealing septum;
a plurality of sensor conductors carried by or integrated with the infusion tube, the sensor conductors terminating within the interior space; and
an electrical interconnect assembly coupled to the inner surface of the lid structure, the electrical interconnect assembly establishing electrical connectivity between the sensor conductors and the electronics assembly when the top cover assembly is coupled to the body-mountable base unit, to facilitate communication of the conditioned digital sensor data from the electronics assembly to the fluid infusion device.
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Accused Products
Abstract
Disclosed is a medical device component for delivering medication fluid to a patient. The medical device component includes a fluid infusion device to regulate delivery of medication fluid, a body-mountable base unit, and a top cover assembly that is removably couplable to the base unit and to the fluid infusion device. The base unit includes a cannula to deliver medication fluid under the control of the fluid infusion device, and a physiological analyte sensor to measure a physiological characteristic. The base unit also includes an electronics assembly electrically connected to sensor leads to obtain measurements in the analog domain, to convert measurements into digital sensor data, and to communicate conditioned digital sensor data to the fluid infusion device. The top cover assembly is configured to provide both fluid and electrical connections for the base unit, by way of an infusion tube having sensor conductors integrated therein or otherwise associated therewith.
96 Citations
19 Claims
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1. A medical device component for delivering medication fluid to a patient, the medical device component comprising:
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a body-mountable base unit comprising; a base structure; a lid assembly affixed and sealed to the base structure; a body-insertable cannula that accommodates delivery of medication fluid to the patient, the cannula having an upstream end securely attached to the base structure and having a downstream end extending from the base structure; a self-sealing septum coupled to the base structure to fluidly seal the upstream end of the cannula, wherein the self-sealing septum is maintained in position between the base structure and the lid assembly; a body-insertable physiological analyte sensor secured to and extending from the base structure, the sensor facilitating measurement of a physiological characteristic of the patient, and the sensor comprising a plurality of sensor leads; and an electronics assembly coupled to the base structure, the electronics assembly electrically connected to the sensor leads to obtain measurements of the physiological characteristic in an analog domain, and the electronics assembly comprising a digital processing circuit to convert measurements of the physiological characteristic from the analog domain into digital sensor data, to digitally process the digital sensor data into conditioned digital sensor data, and to communicate the conditioned digital sensor data to a fluid infusion device associated with the medical device component; and a top cover assembly that is removably couplable to the body-mountable base unit such that the top cover assembly covers the lid assembly of the body-mountable base unit, the top cover assembly comprising; a lid structure that releasably mates with the base structure, the lid structure comprising an interior space defined by an inner surface of the lid structure, and the lid structure comprising at least one structural support feature; an infusion tube secured to the inner surface of the lid structure and terminating within the interior space, wherein the at least one structural support feature of the lid structure receives, secures, and retains a downstream end of the infusion tube; a tubing connector fluidly coupled to the infusion tube, the tubing connector having a distal end supported by the at least one structural support feature of the lid structure, the distal end of the tubing connector penetrating the self-sealing septum to establish a fluid delivery flow path from inside the infusion tube, through the self-sealing septum, and into the cannula when the top cover assembly is coupled to the body-mountable base unit, wherein the self-sealing septum seals the upstream end of the cannula when the top cover assembly is removed from the body-mountable base unit and the tubing connector is withdrawn from the self-sealing septum; a plurality of sensor conductors carried by or integrated with the infusion tube, the sensor conductors terminating within the interior space; and an electrical interconnect assembly coupled to the inner surface of the lid structure, the electrical interconnect assembly establishing electrical connectivity between the sensor conductors and the electronics assembly when the top cover assembly is coupled to the body-mountable base unit, to facilitate communication of the conditioned digital sensor data from the electronics assembly to the fluid infusion device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A medical device component for delivering medication fluid to a patient, the medical device component comprising:
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a fluid infusion device to regulate delivery of medication fluid; a base unit comprising; a base structure; a lid assembly affixed and sealed to the base structure; a cannula that accommodates delivery of medication fluid as controlled by the fluid infusion device, the cannula having an upstream end securely attached to the base structure and having a downstream end extending from the base structure; a self-sealing septum that fluidly seals the upstream end of the cannula, wherein the self-sealing septum is maintained in position between the base structure and the lid assembly; a physiological analyte sensor that facilitates measurement of a physiological characteristic, the sensor comprising a plurality of sensor leads, the physiological analyte sensor secured to and extending from the base unit; and an electronics assembly electrically connected to the sensor leads to obtain measurements of the physiological characteristic in an analog domain, and the electronics assembly comprising a digital processing circuit to convert measurements of the physiological characteristic from the analog domain into digital sensor data, to digitally process the digital sensor data into conditioned digital sensor data, and to communicate the conditioned digital sensor data to the fluid infusion device; and a top cover assembly that is removably couplable to the base unit such that the top cover assembly covers the lid assembly of the base unit, the top cover assembly comprising; a lid structure that releasably mates with the base unit, the lid structure comprising an interior space defined by an inner surface of the lid structure, and the lid structure comprising at least one structural support feature; an infusion tube secured to the inner surface of the lid structure and terminating within the interior space, wherein the at least one structural support feature of the lid structure receives, secures, and retains a downstream end of the infusion tube; a tubing connector fluidly coupled to the infusion tube, the tubing connector having a distal end supported by the at least one structural support feature of the lid structure, the distal end of the tubing connector penetrating the self-sealing septum to establish a fluid delivery flow path from inside the infusion tube, through the self-sealing septum, and into the cannula when the top cover assembly is coupled to the base unit, wherein the self-sealing septum seals the upstream end of the cannula when the top cover assembly is removed from the base unit and the tubing connector is withdrawn from the self-sealing septum; a plurality of sensor conductors terminating within the interior space; and an electrical interconnect assembly coupled to the inner surface of the lid structure, the electrical interconnect assembly establishing electrical connectivity between the sensor conductors and the electronics assembly when the top cover assembly is coupled to the base unit, to facilitate communication of the conditioned digital sensor data from the electronics assembly to the fluid infusion device. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification