Surgical instrument with ratcheting rotatable shaft
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/32
A61B-018/14
A61B-017/00
A61B-018/00
A61B-018/04
H02J-007/00
H01M-002/26
H01M-002/10
A61B-018/12
A61B-019/00
A61B-017/064
A61B-017/285
A61B-017/29
출원번호
US-0274540
(2011-10-17)
등록번호
US-9039720
(2015-05-26)
발명자
/ 주소
Madan, Ashvani K.
출원인 / 주소
Ethicon Endo-Surgery, Inc.
대리인 / 주소
Frost Brown Todd LLC
인용정보
피인용 횟수 :
212인용 특허 :
176
초록▼
An ultrasonic surgical instrument comprises a reusable housing including an internal transducer and an internal end effector rotation assembly. An exemplary rotation assembly is a ratchet and pawl assembly, which allows the transducer to rotate in a first direction but not in a second, opposite dire
An ultrasonic surgical instrument comprises a reusable housing including an internal transducer and an internal end effector rotation assembly. An exemplary rotation assembly is a ratchet and pawl assembly, which allows the transducer to rotate in a first direction but not in a second, opposite direction. The end effector, including an integral torque wrench, is attached to the transducer to form a single unit that is rotatable relative to the housing. The transducer attaches to a stationary cable via slip rings. The cable communicates with a generator, which provides electrical power to the transducer. The transducer converts the electrical power into ultrasonic vibrational energy, which is transmitted to the end effector.
대표청구항▼
1. A surgical instrument comprising: (a) a housing;(b) an ultrasonic transducer;(c) an acoustic transmission assembly attached to the transducer to form a rotatable unit, wherein the acoustic transmission assembly defines a longitudinal axis extending therethrough; and(d) a rotation assembly, wherei
1. A surgical instrument comprising: (a) a housing;(b) an ultrasonic transducer;(c) an acoustic transmission assembly attached to the transducer to form a rotatable unit, wherein the acoustic transmission assembly defines a longitudinal axis extending therethrough; and(d) a rotation assembly, wherein the rotation assembly is operable to rotate the rotatable unit relative to the housing, wherein the rotation assembly comprises an input feature, wherein the input feature is configured to actuate relative to the housing along a linear path, wherein the rotation assembly is operable to convert linear motion of the input feature into rotation of the rotatable unit about the longitudinal axis of the acoustic transmission assembly, wherein the rotation assembly is operable to rotate the rotatable unit incrementally through a predetermined angular range in response to each linear actuation of the input feature. 2. The instrument of claim 1, wherein the rotation assembly comprises a ratchet and pawl assembly. 3. The instrument of claim 2, further comprising a toothed flange disposed about the transducer, wherein the toothed flange forms a ratchet of the ratchet and pawl assembly. 4. The instrument of claim 3, wherein the flange is unitarily secured to the transducer. 5. The instrument of claim 3, wherein the input feature comprises a button associated with a pivoting pawl, wherein the button is associated with the ratchet and pawl assembly, wherein the ratchet is configured to receive the pawl between teeth presented by the ratchet. 6. The instrument of claim 5, wherein the ratchet and pawl assembly is operable to rotate the rotatable unit in a first direction in response to actuation of the button. 7. The instrument of claim 6, wherein the button is biased to return to an original position upon removal of a pressing force. 8. The instrument of claim 6, wherein the pawl of the button is configured to be firmly received in a space defined between adjacent gear teeth of the ratchet upon removal of the pressing force. 9. The instrument of claim 1, wherein the transducer is coupled with a cable extending from the housing. 10. The instrument of claim 9, wherein the transducer is coupled with the cable via one or more slip rings. 11. The instrument of claim 9, further comprising a generator, wherein the cable is coupled with the generator. 12. A surgical instrument comprising: (a) a housing;(b) an acoustic transmission assembly, wherein the acoustic transmission assembly comprises a shaft extending distally relative to the housing, wherein the acoustic transmission assembly includes an end effector in communication with the shaft, wherein the shaft defines a longitudinal axis extending therethrough;(c) a transducer coupled with the acoustic transmission assembly, wherein the acoustic transmission assembly is operable to communicate ultrasonic vibrations from the transducer such that the transducer and the acoustic transmission assembly together define an acoustic assembly; and(d) a pawl and ratchet rotation assembly communicating with the acoustic transmission assembly, wherein the pawl and ratchet rotation assembly is operable to rotate the acoustic assembly about the longitudinal axis of the shaft, wherein the pawl and ratchet rotation assembly is operable to convert a discrete linear input motion into a corresponding discrete angular rotation of the acoustic assembly. 13. The surgical instrument of claim 12, wherein the end effector includes an ultrasonic blade. 14. The surgical instrument of claim 12, wherein the housing is configured to be handheld. 15. A surgical instrument comprising: (a) a housing;(b) an ultrasonic transducer;(c) an acoustic transmission assembly coupled with the transducer, wherein the ultrasonic transducer and the acoustic transmission assembly together form a rotatable unit, wherein the acoustic transmission assembly comprises: (i) a shaft portion extending distally from the housing, wherein the shaft portion defines a longitudinal axis, and(ii) an end effector, wherein the end effector includes an ultrasonic blade; and(d) a rotation assembly, wherein the rotation assembly is operable to rotate the rotatable unit about the longitudinal axis of the shaft portion and relative to the housing in a first direction, wherein the rotation assembly is operable to prevent rotation of the rotatable unit about the longitudinal axis of the shaft portion in a second direction, wherein the rotation assembly includes a rotatable member and an input member, wherein the input member includes a pivotable engagement protrusion, wherein the engagement protrusion is configured to pivot between an engagement position and a disengagement position, wherein the engagement protrusion is operable to engage the rotatable member when in the engagement position to thereby drive the rotatable unit to rotate in the first direction.
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이 특허에 인용된 특허 (176)
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