System and method for detecting access disconnection
First Claim
1. A dialysis method comprising:
- stopping a blood pump after pumping an amount of blood;
detecting a property indicative of whether a patient access device in fluid communication with the amount of blood is dislodged from the patient while the blood pump is stopped; and
determining whether the detected property indicates that the patient access device has been dislodged from the patient.
1 Assignment
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Accused Products
Abstract
A dialysis system includes: a blood filter; a dialysate pump connected to a dialysate portion of the blood filter; a blood pump connected to a blood portion of the blood filter, the blood pump including a diaphragm that is moved in cycles to pump the blood, the cycles having a flow period and a no-flow period; a patient access device in fluid communication with the blood portion of the blood filter, the no-flow period having a first characteristic of a property when the patient access device is lodged in a patient and a second characteristic of the property when the patient access device is dislodged from the patient; and a logic implementer configured to determine that the patient access device has been dislodged from the patient when the second characteristic of the parameter is detected.
74 Citations
20 Claims
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1. A dialysis method comprising:
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stopping a blood pump after pumping an amount of blood; detecting a property indicative of whether a patient access device in fluid communication with the amount of blood is dislodged from the patient while the blood pump is stopped; and determining whether the detected property indicates that the patient access device has been dislodged from the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A dialysis method comprising:
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operating a blood pump to have a flow period and a no-flow period; in the no-flow period, detecting a first characteristic of a property when a patient access device is lodged in a patient, and detecting a second characteristic of the property when the patient access device is dislodged from the patient; and determining that the patient access device has been dislodged from the patient when the second characteristic of the property is detected. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A dialysis method comprising:
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storing a first characteristic of a property of a blood pump no-flow period that is indicative of a patient access device being lodged in a patient; storing a second characteristic of the property of the blood pump no-flow period that is indicative of the patient access device being dislodged from the patient, and determining that the patient access device being dislodged from the patient when the second characteristic of the property is detected. - View Dependent Claims (19, 20)
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Specification