[특허]Retraction mechanism with clutch-less drive for use with a surgical apparatus

Retraction mechanism with clutch-less drive for use with a surgical apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-017/068 A61B-017/072 A61B-017/00 A61B-017/29
출원번호	US-0032369 (2013-09-20)
등록번호	US-9433415 (2016-09-06)
발명자 / 주소	Marczyk, Stanislaw Bender-Zanoni, Joseph
출원인 / 주소	Covidien LP
인용정보	피인용 횟수 : 0 인용 특허 : 55

초록 ▼

A retraction mechanism allows the full distal retraction of the firing drive from various positions. The retraction mechanism has been developed for use with a hand held surgical apparatus. An embodiment of the retraction mechanism includes a drive member, a first pulley, a second pulley, and a firing drive. The drive mechanism is configured to be driven by a motor. The first pulley is configured to rotate when the motor drives the drive mechanism. The second pulley is movable relative to the first pulley between a proximal position and a distal position. The firing drive is movable relative to the first pulley between proximal and distal positions. In operation, the first pulley rotates in a first direction in response to a distal translation of the firing drive and wherein the firing drive moves proximally upon rotation of the first pulley in a second direction.

대표청구항 ▼

1. A retraction mechanism for use with a surgical instrument comprising: a first shaft configured to rotate about an axis;a pulley configured to rotate, wherein rotating the pulley in a first direction moves a firing drive of a surgical apparatus proximally;a first post operatively coupled to the first shaft, wherein the first post is configured to rotate upon rotation of the first shaft;a second post operatively connected to the pulley, wherein the second post is configured to rotate concomitantly with the pulley; andan engagement member attached to the first post, the engagement member being configured engage the second post, wherein the second post is configured to rotate concomitantly with the first post when the engagement member engages the second post. 2. The retraction mechanism of claim 1, further including a motor configured to drive the first shaft. 3. The retraction mechanism of claim 2, further including a first sensor designed to be activated by the first post, the first sensor being electrically linked to the motor, wherein the motor stops upon activation of the first sensor. 4. The retraction mechanism of claim 3, further including a second sensor designed to be activated by the second post, the second sensor being electrically linked to the motor, wherein the motor stops and runs in an opposite direction upon activation of the second sensor. 5. The retraction mechanism of claim 1, further including a speed reducing mechanism disposed in mechanical cooperation with the first shaft. 6. The retraction mechanism of claim 5, wherein the speed reducing mechanism includes a worm secured to the first shaft and a worm gear configured to mate with the worm. 7. The retraction mechanism of claim 6, further including a hollow shaft rotatably interconnecting the worm gear and the first post. 8. The retraction mechanism of claim 7, further including a second shaft rotatably interconnecting the pulley and the second post, wherein at least a portion of the second shaft is positioned inside the hollow shaft. 9. The retraction mechanism of claim 1, further including a spring motor operatively connected to a flexible member, wherein the spring motor maintains the flexible member in tension. 10. The retraction mechanism of claim 1, wherein the engagement member is covered with a material selected from the group consisting of: a viscous material, an elastic material, and a combination thereof.

이 특허에 인용된 특허 (55)

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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Retraction mechanism with clutch-less drive for use with a surgical apparatus 원문보기

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Retraction mechanism with clutch-less drive for use with a surgical apparatus 원문보기

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