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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0832299 (1992-02-07) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 820 인용 특허 : 2 |
A surgical stapling instrument for performing a circular anastomosis stapling operation is provided. The surgical instrument includes a stapling head assembly mounted by a flexible support shaft to an actuator handle assembly. The support shaft is capable of bending in any radial direction relative
A surgical stapling instrument for performing a circular anastomosis stapling operation is provided. The surgical instrument includes a stapling head assembly mounted by a flexible support shaft to an actuator handle assembly. The support shaft is capable of bending in any radial direction relative to its centerline into a curved configuration suitable for insertion into a patient. The flexible support shaft includes a dual coil structure which is adapted to support itself in any curved configuration and to resist deflection upon insertion into the patient and actuation of the stapling head assembly. The stapling head assembly includes a driver assembly which is operable in multiple stages to separate the staple forming and tissue cutting actions to reduce the peak force required to operate the instrument. The actuator handle assembly includes a staple actuating lever and a cam follower assembly which operate in two stages with different mechanical advantages to facilitate the operation of the instrument by a surgeon. The actuator handle assembly includes a thumb wheel for opening and closing the anvil and an adjusting knob for adjusting the anvil gap. A control lever is provided for pivoting the stapling head assembly relative to the flexible support shaft.
A surgical stapling instrument for applying one or more surgical staples to tissue, comprising: a stapling head assembly including a staple holder for receiving one or more surgical staples, an anvil for clamping the tissue against said staple holder, and a staple driver for engaging and driving the
A surgical stapling instrument for applying one or more surgical staples to tissue, comprising: a stapling head assembly including a staple holder for receiving one or more surgical staples, an anvil for clamping the tissue against said staple holder, and a staple driver for engaging and driving the staples from said staple holder into the tissue and against said anvil; an actuator handle assembly including means for actuating said staple driver; a shaft assembly including a flexible support shaft for mounting said stapling head assembly on said actuator handle assembly; and said support shaft being flexible in any radial direction relative to its centerline into a curved configuration, said support shaft being self-supporting and adapted to retain said curved configuration and to resist deflection; and wherein said flexible support shaft comprises one or more helical elements including a series of helical coils which are adapted to slidably engage each other with sufficient friction to resist deflection and to retain said curved configuration.
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