| 摘要 |
A surgical combination apparatus includes a first instrument (e.g., an injection needle), a second instrument (e.g., a snare) and a catheter for sheathing the first and second instruments. An actuator is included for extending the first instrument and the second instrument independent of each other. A biasing mechanism is also provided to bias the first instrument into a retracted position. A locking mechanism is also preferably provided to hold the first instrument in either the extended or retracted position.
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