Method of Monitoring Dislodgement of Venous Needles in Dialysis Patients
First Claim
1. A method of detecting a dislodged needle in a hemodialysis procedure, comprising the steps of:
- measuring venous drip pressure for a patient undergoing dialysis;
analyzing the venous drip pressure and deriving intravascular blood pressure at a location of venous needle insertion into the patient;
comparing the derived intravascular blood pressure to a standard;
repeating said measuring, analyzing and deriving, and comparing steps; and
if the intravascular blood pressure is within a specified range of the standard, determining that a needle has been dislodged in the hemodialysis procedure.
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Accused Products
Abstract
A method of detecting a dislodged needle in a hemodialysis procedure includes measuring venous drip pressure of the dialysis machine of a patient undergoing hemodialysis, analyzing the venous drip pressure and deriving intravascular blood pressure at a location of venous needle insertion into the patient, comparing the derived intravascular blood pressure to a standard, repeating the measuring, analyzing and deriving, and comparing steps and, if the intravascular blood pressure is within a specified range of the standard, determining that a needle has been dislodged in the hemodialysis procedure. A method of alerting the patient and medical personnel of a dislodged needle in a hemodialysis procedure includes detecting a drop in intravascular pressure derived from measured venous drip pressure, determining that a needle is dislodged, and alerting medical personnel of the dislodged needle.
42 Citations
13 Claims
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1. A method of detecting a dislodged needle in a hemodialysis procedure, comprising the steps of:
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measuring venous drip pressure for a patient undergoing dialysis; analyzing the venous drip pressure and deriving intravascular blood pressure at a location of venous needle insertion into the patient; comparing the derived intravascular blood pressure to a standard; repeating said measuring, analyzing and deriving, and comparing steps; and if the intravascular blood pressure is within a specified range of the standard, determining that a needle has been dislodged in the hemodialysis procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of alerting medical personnel of a dislodged needle in a hemodialysis procedure, comprising the steps of:
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detecting a drop in intravascular pressure derived from measured venous drip pressure; detecting a dislodged needle; and alerting medical personnel of the dislodged needle. - View Dependent Claims (12, 13)
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Specification