| 摘要 |
A biopsy forceps device is provided exhibiting improved torqueable and formable characteristics. The device includes a handle and a core wire connected at its proximal end to the handle and connected at its distal end to a forceps assembly. The control wire displacing device is carried by the handle and serves to displace the core wire for moving the core wire between a forceps open position and a forceps closed position. The core wire includes at least three elongated portions including a proximal portion having a proximal end secured to the wire displacing means, a distal portion having a distal end secured to the forceps assembly and an intermediate portion located between the proximal and distal portions. The proximal portion is of greater length than either the intermediate or distal portions and is of greater diameter than the intermediate portion which, in turn, is of greater diameter than the distal portion. The first tapered portion is located between the distal portion and the intermediate portion and a second tapered portion is located between the intermediate portion and the proximal portion.
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