Dilation catheter with motor drive for dilation of blood vessels

Claim 1

Motor drive and dilation catheter for reopening of blood vessels, the dilation catheter is insertable through vessels leading to a constriction point and includes a working head for reopening the vessel constriction, wherein the improvement comprises a metal housing shaped for gripping, holding and handling by the half-closed hand of a surgeon between his row of fingers and his thumb, means for sealing said housing in a gas tight manner up to at least 130° C. and 3 bars pressure and said means including a front and a rear bearing package, an electrical battery-driven motor with a motor gearing train mounted in said housing, a hollow spindle open at opposite ends thereof is positioned inn said housing and is supported therein in the front bearing package with a seal and the rear bearing package with a seal, a junction point at one end of the spindle for receiving and holding the dilation catheter means for effecting force transmission from the motor to the spindle, the housing comprises a spindle channel having a front end ad a rear end, the front bearing package is located in the front end of said spindle channel and comprises a front sleeve, a front bearing and an annular support with a front bearing seal located within the front sleeve, the rear bearing package comprises a rear bearing and a rear sleeve, and the front and rear bearing packages are arranged in the spindle channel in a gas-tight manner by seal sleeves, the motor and the motor gearing being round and having substantially the same diameter and are aligned on a longitudinal axis parallel with a spindle axis of the spindle, and intermediate wall being arranged in the housing parallel to the spindle axis and the longitudinal axis and dividing the housing into a spindle channel and a separate compartment for the battery and motor.