| 摘要 |
An instrument is provided for cutting tissue having a housing, a shaft extending from the housing to a distal end with an opening, and a guide tube extending from the distal end through the opening for receiving a guide wire through the shaft and housing. A movable blade shuttle having a blade is provided at the distal end. The blade shuttle's travel is guided by the guide tube when the blade shuttle and blade is extended from the distal end opening to cut tissue and retracted back through the distal end opening. The housing has a pivotal actuator member mechanically coupled to the blade shuttle to remotely control movement of the blade shuttle at the instrument's distal end. The instrument may be used for longitudinal cutting of tissue at remote sites in the body of a patient to provide incisions of precise depth and length over a controlled path of a guide wire.
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