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US 11,992,596 B2Granted
Medical device dislodgment detection
AssigneeMozarc Medical US LLC
InventorsDaniel Bloomberg, VenKatesh Manda
Life of this patent
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Abstract
In examples described herein, a system includes an elongate member configured to be introduced into vasculature of a patient. The elongate member includes a pressure sensor configured to generate a pressure signal indicative of pressure in the vasculature adjacent the needle. The system includes processing circuitry configured to receive the pressure signal from the pressure sensor, detect, based on the pressure signal, dislodgment of the elongate member from the vasculature, and generate an output in response to detecting the dislodgment of the elongate member from the vasculature.
Claims24
A method comprising:
- receiving, by processing circuitry, a pressure signal generated by a pressure sensor on an elongate member configured to be introduced into vasculature of a patient, the pressure signal being indicative of pressure adjacent the elongate member;
- detecting, by the processing circuitry and based on the pressure signal, dislodgment of the elongate member from the vasculature, wherein detecting the dislodgment of the elongate member comprises:
- determining the pressure adjacent the elongate member based on the pressure signal;
- and
- comparing the pressure adjacent the elongate member with a threshold pressure;
- and
- generating, by the processing circuitry, an output in response to detecting the dislodgment of the elongate member from the vasculature.
4 more elements
A method comprising:
- receiving, by processing circuitry, a pressure signal generated by a pressure sensor on an elongate member configured to be introduced into vasculature of a patient, the pressure signal being indicative of pressure adjacent the elongate member, wherein the pressure signal comprises an analog pressure signal;
- detecting, by the processing circuitry and based on the pressure signal, dislodgment of the elongate member from the vasculature, wherein detecting the dislodgment of the elongate member comprises:
- determining the analog pressure signal does not include a pulse pressure wave component, the pulse pressure wave being indicative of a pulse pressure of the patient, wherein determining the analog pressure signal does not include the pulse wave component comprises:
- detecting a dialysis pump pressure wave component in the analog pressure signal,
- generating a residual wave by at least filtering the dialysis pump pressure wave component from the analog pressure signal, and
- determining the residual wave does not include the pulse pressure wave component;
- and
- detecting the dislodgment of the elongate member in response to determining the analog pressure signal does not include the pulse pressure wave component;
- and
- generating, by the processing circuitry, an output in response to detecting the dislodgment of the elongate member from the vasculature.
7 more elements
A method comprising:
- receiving, by processing circuitry, a pressure signal generated by a pressure sensor on an elongate member configured to be introduced into vasculature of a patient, the pressure signal being indicative of pressure adjacent the elongate member;
- receiving, by the processing circuitry, a reference pressure signal indicative of a reference pressure external to the vasculature;
- detecting, by the processing circuitry and based on the pressure signal, dislodgment of the elongate member from the vasculature, wherein detecting the dislodgment of the elongate member from the vasculature comprises detecting the dislodgment of the elongate member based on the pressure signal and the reference pressure signal;
- and
- generating, by the processing circuitry, an output in response to detecting the dislodgment of the elongate member from the vasculature.
2 more elements
A system comprising:
- an elongate member configured to be introduced into vasculature of a patient, the elongate member comprising means for generating a pressure signal indicative of pressure adjacent the elongate member;
- and
- means for detecting dislodgment of the elongate member from the vasculature based on the pressure signal, wherein the means for detecting dislodgment of the elongate member detects the dislodgment of the elongate member in response to determining the pressure adjacent the elongate member based on the pressure signal and determining the pressure is greater than or equal to a threshold pressure;
- and
- means for generating an output in response to detecting the dislodgment of the needle from the vasculature.
2 more elements
Dependencies are inferred from the claim text.