Controller system for crossing vascular occlusions
First Claim
1. A driver for a device having a drive shaft, said driver comprising:
- a motor coupled to the drive shaft configured to rotate and/or oscillate the drive shaft;
a load sensor coupled to the motor having an output representative of load on the motor; and
at least one of an audible and visual output coupled to the sensor output and providing load status to a user.
3 Assignments
0 Petitions
Accused Products
Abstract
A controller system includes a device configured to cross an occlusion or stenosis and a control unit. The occlusion-crossing device has an axial lumen and a drive shaft extending through the axial lumen. The control unit is coupled to the device. The control unit has a processor which produces a variable sound and a variable visual display in response to a load measurement on the drive shaft. The load may be measured by a change in current in a motor which drives the shaft. This change in current is then converted to a frequency for variable sound and to a visual display indicative of the load. The load status on the motor may be divided into discrete load levels and correspondingly indicated by discrete levels in the feedback sound frequency and the visual display. This system may be used to monitor and facilitate crossing vascular total occlusions during percutaneous interventions.
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Citations
33 Claims
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1. A driver for a device having a drive shaft, said driver comprising:
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a motor coupled to the drive shaft configured to rotate and/or oscillate the drive shaft; a load sensor coupled to the motor having an output representative of load on the motor; and at least one of an audible and visual output coupled to the sensor output and providing load status to a user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for crossing a total occlusion, said method comprising:
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engaging a rotating and/or oscillating shaft against the occlusion; providing at least one of an audible and visual feedback indicative of load produced on a motor driving the shaft; and advancing the shaft into the occlusion for so long as the feedback produced remains below a threshold level. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification