IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0050280
(2008-03-18)
|
| 등록번호 |
US-8308725
(2012-11-13)
|
|
발명자
/ 주소 |
- Bell, Stephen G.
- Noda, Wayne A.
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
43 인용 특허 :
32 |
초록
▼
The invention relates to a device and related method for sealing and/or dissecting body tissue using a reverse action instrument. The devices and methods described permit laparoscopic or natural body orifice access to an anatomical space and facilitate sealing portions of tissue together, dissecting
The invention relates to a device and related method for sealing and/or dissecting body tissue using a reverse action instrument. The devices and methods described permit laparoscopic or natural body orifice access to an anatomical space and facilitate sealing portions of tissue together, dissecting tissue or combinations thereof. A surgical instrument for sealing and dissecting body tissue is described having distal and proximal ends with an elongated body. The body includes a jaw member positioned at the distal end that is defined by a stationary arm and a pivotable arm. A moveable closure sleeve is disposed at least partially about the body and the closure sleeve is configured such that coaxial movement of the sleeve along the longitudinal axis of the body causes the jaw member to open or close.
대표청구항
▼
1. A device having distal and proximal end portions comprising: an elongated body having a longitudinal axis and an outside diameter,a jaw member positioned at the distal end portion, said jaw member having a stationary arm formed in the body and a pivotable arm coupled to the distal end portion of
1. A device having distal and proximal end portions comprising: an elongated body having a longitudinal axis and an outside diameter,a jaw member positioned at the distal end portion, said jaw member having a stationary arm formed in the body and a pivotable arm coupled to the distal end portion of the body, a pivot point of said pivotable arm being fixed relative to the longitudinal axis, the pivotable arm including a pivot end disposed at the pivot point and a free end distanced from the pivot point, the free end being closer to the proximal portion of the device than the pivot end,a moveable closure sleeve disposed at least partially about the body, said closure sleeve configured to extend to the distal end of the elongated body and also configured such that coaxial movement of the sleeve along the longitudinal axis causes the jaw member to open or close, the closure sleeve terminating at a distal part of the closure sleeve in a closure ring which completely circumscribes the elongated body, the closure ring being urged against a distal part of the pivotal arm to move the pivotal arm toward the stationary arm when the closure sleeve is moved proximally relative to the elongated body;further comprising a spring, said spring biasing the pivotable arm in an open configuration; andwherein the jaw member is positioned in a cavity in the elongated body, said cavity defining an area having a reduced cross sectional area compared to the more proximal portions of the elongated body, wherein the jaw member has a diameter substantially equivalent to the outside diameter of the elongated body when in a closed position. 2. The device of claim 1 configured such that the jaw opening generally opens toward the proximal end portion of the elongated body. 3. The device of claim 2 adapted so that movement of the closure sleeve causes the pivotable arm to open or close. 4. The device of claim 3, wherein the closure ring defines the distal edge of a treatment window positioned at the distal end portion of the elongated body, said treatment window defining an opening in the closure sleeve and adapted to have a similar profile as the cavity, said treatment window aligned with the cavity when the jaw member is in an open position. 5. The device of claim 1 wherein the elongated body is adapted to transmit a torque such that the jaw member can be rotated by applying a torque to the proximal end portion and wherein the jaw member is adapted to articulate and rotate to facilitate capturing body tissue in the jaw member. 6. The device of claim 1 having a tunneling tip positioned at the distal end portion and adapted to facilitate placement of the instrument through body tissue. 7. The device of claim 1 further comprising at least one tissue modification member on the stationary arm, the pivotable arm, the elongate body or a combination thereof, said modification member capable of sealing, dissecting or a combination of sealing and dissecting body tissue positioned between the stationary arm and the pivotable arm. 8. The device of claim 7 wherein the modification member is a stationary dissecting blade attached to the pivotable arm, said blade configured to dissect tissue positioned between the pivotable arm and the stationary arm. 9. The device of claim 7 wherein the modification member is a moveable dissecting blade positioned inside the distal end portion of the elongate body, said blade adapted to slide along the longitudinally axis of the elongate body to dissect body tissue confined between the arms of the jaw member. 10. The device of claim 7, the modification member further comprising at least one energy director, the energy director adapted so that when energy from an energy source is passed through the energy director, body tissue confined between the two arms is sealed, dissected, or a combination of sealed and dissected. 11. The device of claim 10 comprising an ultrasonic source, a monopolar, bipolar or tripolar source or a dc current source. 12. The device of claim 11 further comprising a controller such that the order of sealing and dissecting can be controlled by an operator. 13. The device of claim 11, further comprising at least a first and a second energy director attached to each of the pivotable arm and the stationary arm, the energy directors aligned so that when the jaw member closes the first energy director opposes the second energy director. 14. The device of claim 13 wherein when energy from the energy source is passed between the opposing pairs, body tissue located in between the two arms is sealed, dissected or a combination of sealed and dissected. 15. The device of claim 13 wherein when energy from the energy source is passed between the first energy director attached to the pivotable arm and the second energy director attached to a stationary arm, body tissue located in between the two arms is sealed, dissected or a combination of sealed and dissected. 16. The device of claim 1 further comprising an anti-glare coating applied to the distal end portion of the elongated body. 17. A surgical instrument for sealing or dissecting body tissue having distal and proximal end portions comprising: an elongated body having a reverse acting jaw member coupled at the distal end portion with the jaw member biased in an open position, the jaw member formed by at least one stationary arm which is a part of the elongated body and at least one second arm that is pivotably connected at the distal end portion and generally oriented toward the proximal end portion, said second arm having a free end and a pivot point distal to the free end and that is fixed on the longitudinal axis of the elongated body, the jaw member configured to be activated by a closure sleeve, said closure sleeve configured to extend to the distal end of the elongated body and be coaxially disposed about the elongated body such that the jaw is opened and closed by movement of the sleeve along a longitudinal axis of the elongated body, the closure sleeve distally terminating in a hollow closure ring surrounding the elongated body, the closure ring being in a first position that is distal to the pivot point when the jaw member is in the open position, the closure ring riding against the second arm to urge it to pivot toward the stationary arm when the closure sleeve is moved proximally relative to the elongated body from the first position toward a second position that is proximal to the first position;further comprising a spring, said spring biasing said second arm in an open configuration; andwherein the reverse acting jaw member is positioned in a cavity in the elongated body, said cavity defining an area having a reduced cross sectional area compared to the more proximal portions of the elongated body, wherein the reverse acting jaw member has a diameter substantially equivalent to an outside diameter of the elongated body when in a closed position. 18. The instrument of claim 17 wherein the sleeve is a tube that surrounds the elongate body, the sleeve having a treatment window defined by an opening in the sleeve sized and adapted so that when the treatment window is aligned along the longitudinal axis with the jaw member, the jaw member is in an open configuration and when the sleeve is moved toward the proximal end portion, the jaw member is moved toward a closed configuration. 19. The instrument of claim 17 wherein the elongated body is adapted to transmit a torque such that the jaw member can be rotated by applying a torque to the proximal end portion and wherein the jaw member is adapted to articulate and rotate to facilitate capturing body tissue in the jaw member. 20. The instrument of claim 19 having a tunneling tip positioned at the distal end portion and adapted to facilitate placement of the instrument through body tissue. 21. The instrument of claim 19 further comprising at least one tissue modification member on the stationary arm, the second pivotable arm, the elongate body or a combination thereof, said modification member capable of sealing, dissecting or a combination of sealing and dissecting body tissue positioned between the stationary arm and the second pivotable arm. 22. The instrument of claim 21 wherein the tissue modification member is a stationary cutting blade attached to the pivotable arm, said blade configured to dissect tissue positioned between the pivotable arm and the stationary arm. 23. The instrument of claim 21 wherein the tissue modification member is a moveable dissecting blade positioned inside the distal end portion of the elongate body, said blade adapted to slide along a longitudinally axis of the elongate body to dissect body tissue confined between the arms of the jaw member. 24. The instrument of claim 21, the tissue modification member further comprising at least one energy director, the energy director adapted so that when energy from an energy source is passed through the energy director, body tissue located in between the two arms is sealed, dissected, or a combination of sealed and dissected. 25. The instrument of claim 24 comprising an ultrasonic source, a monopolar, bipolar or tripolar source or a de current source. 26. The instrument of claim 25 further comprising a controller such that the order of sealing and dissecting can be controlled by an operator. 27. The instrument of claim 25 further comprising at least a first and a second energy director attached to each of the pivotable arm and the stationary arm, the energy directors aligned so that when the jaw member closes the at least first energy directors opposes the at least second energy director. 28. The instrument of claim 27 wherein when energy from the energy source is passed between the opposing pairs, body tissue located in between the two arms is sealed, dissected or a combination of sealed and dissected. 29. The instrument of claim 27 wherein when energy from the energy source is passed between the first energy director attached to the pivotable arm and the second energy director attached to a stationary arm, body tissue located in between the two arms is sealed, dissected or a combination of sealed and dissected.
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