Ultrasonic instrument with a micro motor having stator coils on a flexible circuit board
AssigneeDu-Med B.V.
InventorsCharles T. Lancee, Nicolaas Bom
Life of this patent
Estimating the term…
Abstract
The disposable intra-luminal ultrasonic instrument for the examination and/or treatment of blood vessels and similar lumina has a small transverse cross-section. The instrument includes a catheter comprising a body and a tip having a distal end and a distal portion adapted to be introduced into a lumen and a proximal portion. The catheter has a diameter no greater than 3 millimeters, a rotatable member in the tip, a micro motor in the tip and coupled to the rotatable member for rotating the rotatable member at a selected rpm, the motor having flat stator coils mounted on a flexible circuit board, and means for generating and supplying sound waves to the rotatable member.
Claims38
An ultrasonic instrument for the examination and/or treatment of blood vessels and similar lumina having a small transverse cross-section, said instrument including a catheter comprising a body and a tip having a distal end and a distal end portion adapted to be introduced into a lumen and a proximal portion, said catheter having a diameter not greater than 3 millimeters, a rotatable member in said tip, and a micro motor in said tip including flat stator coils mounted on at least one flexible circuit board which is coiled into a cylinder, and a rotor which is coupled to said rotatable member for rotating said rotatable member at a selected rpm, and means for generating and supplying sound waves to said rotatable member.
A synchronous alternating current micro motor comprising a rotor and a stator having at least two flat stator branches mounted on a flexible circuit board which is coiled into a cylinder around said rotor.
A synchronous alternating current two phase micro motor comprising a rotor and a stator having four flat stator coil branches forming two frame coils, said coil branches being mounted on a flexible circuit board which is coiled into a cylinder around said rotor and said rotor being a permanent magnet rotor having a North pole layer and a South pole layer thereon mounted on a drive shaft, thereby to provide a two pole motor.
A synchronous alternating current micro motor comprising a rotor and a stator having at least two flat stator coil branches mounted on a flexible circuit board which is coiled into a cylinder around said rotor, said two flat stator coil branches being arranged to form at least one frame coil and each coil branch being constructed and arranged to produce a current density profile of a sinusoidal nature in an arcuate direction along the circumference of the coiled circuit board.
A disposable ultrasonic instrument for the examination of blood vessels or for the treatment of blood vessels or for the guiding of an interventional device through blood vessels and similar lumina having a small transverse cross-section, said instrument comprising a distal end portion and being adapted to being introduced into a lumen, said distal end portion having a diameter not greater than 3 millimeters, a rotatable member in said distal end portion, and a micro motor being positioned in said distal end portion and including flat stator coils mounted on at least one flexible circuit board which is coiled into a cylinder, and a rotor which is coupled to said rotatable member for rotating said rotatable member at a selected rpm, and said instrument further including means for generating and supplying sound waves to said rotatable member.
Dependencies are inferred from the claim text.