Medical device dislodgment detection
AssigneeMedtronic, Inc.
InventorsDaniel Bloomberg, VenKatesh Manda
Life of this patent
Estimating the term…
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.
Claims25
A system comprising:
- an elongate member configured to be introduced into vasculature of a patient, wherein the elongate member comprises a pressure sensor configured to generate a pressure signal indicative of pressure adjacent the elongate member;
- and
- 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,
- wherein the processing circuitry is configured to detect the dislodgment of the elongate member by at least:
- determining the pressure adjacent the elongate member based on the pressure signal;
- and
- comparing the pressure adjacent the elongate member with a threshold pressure value.
A system comprising:
- an elongate member configured to be introduced into vasculature of a patient, wherein the elongate member comprises a pressure sensor configured to generate a pressure signal indicative of pressure adjacent the elongate member;
- and
- 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,
- wherein the pressure signal comprises an analog pressure signal, and wherein the processing circuitry is configured to detect the dislodgment of the elongate member by at least:
- 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 to determine the analog pressure signal does not include the pulse wave component, the processing circuitry is configured to:
- detect a dialysis pump pressure wave component in the analog pressure signal,
- generate a residual wave by at least filtering the dialysis pump pressure wave component from the analog pressure signal, and
- determine 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.
A system comprising:
- an elongate member configured to be introduced into vasculature of a patient, wherein the elongate member comprises a pressure sensor configured to generate a pressure signal indicative of pressure adjacent the elongate member;
- a reference pressure sensor configured to generate a reference pressure signal indicative of a reference pressure external to the vasculature;
- and
- processing circuitry configured to:
- receive the pressure signal from the pressure sensor,
- detect, based on the pressure signal and the reference 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.
Dependencies are inferred from the claim text.