IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0549926
(2006-10-16)
|
등록번호 |
US-8430851
(2013-04-30)
|
발명자
/ 주소 |
- McGinley, Kimball B
- Kahle, Henry
- Taylor, Scott V.
- Johnson, Gary M
|
출원인 / 주소 |
- Applied Medical Resources Corporation
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
13 인용 특허 :
128 |
초록
▼
A surgical access port or trocar is provided. The trocar has a trocar seal housing and a trocar cannula with an optical obturator insertable through the trocar seal housing and the trocar cannula. The trocar is configured to access a body cavity, to maintain positive pressure and to prevent loss of
A surgical access port or trocar is provided. The trocar has a trocar seal housing and a trocar cannula with an optical obturator insertable through the trocar seal housing and the trocar cannula. The trocar is configured to access a body cavity, to maintain positive pressure and to prevent loss of surgical insufflation gas used in laparoscopic procedures. The trocar seal housing can be releasably attached to the trocar cannula. The trocar seal housing may also have a shield and/or alignment channel that provide protection or assist in operation of instrument and zero seals housed in the trocar seal housing.
대표청구항
▼
1. A surgical access port comprising: a trocar seal housing having an instrument seal, a zero seal and an alignment channel, the alignment channel comprising a long tubular channel extending from the trocar seal housing, extending into, nested in, and substantially encompassed in the instrument seal
1. A surgical access port comprising: a trocar seal housing having an instrument seal, a zero seal and an alignment channel, the alignment channel comprising a long tubular channel extending from the trocar seal housing, extending into, nested in, and substantially encompassed in the instrument seal, and being fixed and rigid, the alignment channel having a proximal end, a distal end proximal the instrument seal, a body portion extending between the proximal end and the distal end, a funneled entry at the proximal end, and a tapered exit at the distal end and wherein the alignment channel has a first diameter along the body portion configured to align an instrument inserted through the trocar seal housing, a second diameter larger than the first diameter at the distal end, and a third diameter larger than the second diameter at the funneled entry, the zero seal fixed to the trocar seal housing such that the zero seal does not substantially pendulate and the instrument seal positioned between the alignment channel and the zero seal, nested in and substantially encompassed in the fixed zero seal, and having an aperture adapted to form a seal around the instrument inserted through the trocar seal housing and the instrument seal being pivotably connected to the seal housing; anda trocar cannula attached to the trocar seal housing. 2. The port of claim 1 further comprising a trocar lock releasably attaching the trocar cannula to the trocar seal housing. 3. The surgical access port of claim 2, wherein the trocar lock is at least one of slidably and pivotably connected to one of the trocar seal housing and trocar cannula. 4. The port of claim 1 wherein the trocar lock comprise a pair of resilient arms extending from opposing sides of the trocar cannula in a direction parallel to a longitudinal axis of the cannula and a pair of slots on opposing sides of the trocar seal housing, the pair of resilient arms operationally engaging the pair of slots. 5. The port of claim 1 wherein the trocar lock comprises a ring having a tab inwardly extending towards a center of the ring, the trocar seal housing having an aperture sized to receive the tab and the trocar cannula having a groove sized to receive the tab. 6. The port of claim 5 wherein the tab is movable from a first position in which the tab is engaged with the aperture in the trocar seal housing and a second position in which the tab is engaged with the aperture in the trocar seal housing and the groove in the trocar cannula. 7. The port of claim 1 wherein the trocar lock comprises a substantially flat plate having a keyhole slot with a first aperture and a second aperture, the first aperture being smaller than the second aperture. 8. The port of claim 7 wherein the flat plate is movable in a direction perpendicular to a longitudinal axis of the trocar cannula from a first position in which the trocar seal housing is within the first aperture and a second position in which the trocar seal housing is within the second aperture. 9. The port of claim 8 wherein the flat plate being in the first position engages with an aperture in the trocar seal housing and a groove in the trocar cannula and the second position in which the flat plate is substantially withdrawn from the groove in the trocar cannula. 10. The port of claim 1 wherein the trocar lock comprises at least one lever arm pivotably movable relative to the trocar seal housing and having a tab extending from the at least one lever arm, the at least one lever arm movable from a first position in which the tab engages with an aperture in the trocar seal housing and a groove in the trocar cannula and a second position in which the tab is substantially withdrawn from the groove in the trocar cannula. 11. The port of claim 1 wherein the trocar lock comprises at least one latch with a tab, the at least one latch movable from a first position in which the tab engages with an aperture in the trocar seal housing and a groove in the trocar cannula and a second position in which the tab is withdrawn from the groove in the trocar cannula. 12. The port of claim 1 wherein the trocar lock is arranged to resist axial forces directed to separate the trocar cannula from the trocar seal housing. 13. The port of claim 1, wherein the trocar cannula has a groove in a proximal end of the cannula substantially encircling an outer periphery of the cannula and a cannula seal disposed in the groove. 14. The port of claim 13 wherein the cannula seal is an elastomeric ring with an x-shaped cross-section. 15. The port of claim 13 wherein the cannula seal is an over-molded seal. 16. The port of claim 1 further comprising an obturator having a longitudinally extending lumen from a proximal open end to a distal closed end, the lumen being sized and arranged to receive a laparoscope and the obturator being sized to slidably move in a lumen of the trocar cannula. 17. The port of claim 1 further comprising a trocar lock having a tab extending from the trocar lock and movable through an aperture in the trocar seal housing to a groove in the trocar cannula. 18. The port of claim 1 further comprising a trocar lock extending from the trocar cannula having a tab engageable with a slot in the trocar seal housing. 19. The port of claim 1 further comprising a raised portion substantially outlining a periphery of an opening in a proximal end of the seal housing. 20. The port of claim 1 further comprising a shield extending along the instrument seal between the alignment channel and the instrument seal. 21. The port of claim 20 wherein the shield has a proximal flat portion in contact with the alignment channel. 22. The port of claim 1 further comprising a shield partially surrounding the alignment channel. 23. The port of claim 1 further comprising a shield positioned axially between the alignment channel and the instrument seal. 24. The port of claim 1 wherein the generally funneled entry comprises a non-glare finish. 25. The port of claim 1 further comprising: a integral Luer fitting incorporated with and extending from the trocar seal housing in a first direction for a first distance, the first direction being substantially perpendicular to a longitudinal axis of the trocar cannula; anda stopcock having a central bore extending substantially parallel to the longitudinal axis of the trocar cannula and fitted into the integral Luer fitting and a lever extending in a second direction for a second distance, the first direction corresponding to the second direction and the first distance corresponding to the second distance. 26. The port of claim 25 wherein the trocar seal housing has an aperture with a center positioned along a first axis, the first axis substantially perpendicular to a longitudinal axis of the trocar cannula, the integral Luer fitting having an aperture with a center positioned along the first axis, the stopcock central bore having a first aperture with a center and a second aperture with a center, the stopcock center bore movable from a first position and a second position, in the first position the center of the first aperture and the center of the second aperture are substantially aligned with the first axis, in the second position the center of the first aperture and the center of the second aperture being out of alignment with the first axis. 27. The port of claim 1 further comprising pivotable spigot having a insufflation gas fitting on one end and movable from a first position in which the insufflation gas fitting extends away from the trocar seal housing and perpendicularly to a longitudinal axis of the trocar cannula and a second position in which the insufflation gas fitting is positioned substantially near the trocar seal housing. 28. The port of claim 1, wherein the instrument seal is invertible into the distal end of the alignment channel. 29. The port of claim 28, wherein the instrument seal has a wall thickness and wherein the second diameter is sized to accommodate two wall thicknesses of the instrument seal and an instrument diameter of a largest instrument passable through the first diameter of the body portion of the alignment channel. 30. The port of claim 28, wherein the tapered exit at the distal end of the alignment channel has an axial length sized such that the instrument seal can invert but not extend into the body portion of the alignment channel. 31. The port of claim 1, wherein the funneled entry comprises an anti-reflective finish. 32. The port of claim 1, wherein the aperture of the instrument seal is sized to accommodate a small amount of lateral movement of the instrument allowed by the alignment channel.
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