Ambulatory infusion devices and methods
First Claim
Patent Images
1. A method of monitoring an infusion device having an infusion device outlet and a fluid transfer device with a cycle that consists of a fluid transfer device operation and a rest period, the method comprising the steps of:
- sensing pressure within a catheter connected to the infusion device outlet at the beginning of a single fluid transfer device cycle and prior to the operation of the fluid transfer device;
sensing pressure within the catheter at the end of the rest period of the single fluid transfer device cycle; and
determining that the catheter is blocked in response to the pressure sensed at the end of the rest period of the single fluid transfer device cycle being greater than the pressure sensed at the beginning of the single fluid transfer device cycle and prior to the operation of the fluid transfer device.
5 Assignments
0 Petitions
Accused Products
Abstract
Infusion devices with blockage detection capability and methods of monitoring infusion devices.
28 Citations
11 Claims
-
1. A method of monitoring an infusion device having an infusion device outlet and a fluid transfer device with a cycle that consists of a fluid transfer device operation and a rest period, the method comprising the steps of:
-
sensing pressure within a catheter connected to the infusion device outlet at the beginning of a single fluid transfer device cycle and prior to the operation of the fluid transfer device; sensing pressure within the catheter at the end of the rest period of the single fluid transfer device cycle; and determining that the catheter is blocked in response to the pressure sensed at the end of the rest period of the single fluid transfer device cycle being greater than the pressure sensed at the beginning of the single fluid transfer device cycle and prior to the operation of the fluid transfer device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of monitoring an infusion device with a fluid transfer device that delivers fluid to a catheter, the method comprising the step of:
determining that there is a catheter blockage in response to a catheter pressure sensed at the end of a rest period of a single fluid transfer device cycle being greater than a catheter pressure sensed immediately prior to the beginning of the single fluid transfer device cycle. - View Dependent Claims (9, 10, 11)
Specification