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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0574987 (2014-12-18) |
| 등록번호 | US-9295459 (2016-03-29) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 1 인용 특허 : 595 |
The invention is directed to a surgical access system that provides access to a surgical area while maintaining pneumoperitoneum during laparoscopic surgery. The access system comprises a sheath retractor adapted to dilate a wound stretchable to a desired diameter and a detachable seal adapted to be
The invention is directed to a surgical access system that provides access to a surgical area while maintaining pneumoperitoneum during laparoscopic surgery. The access system comprises a sheath retractor adapted to dilate a wound stretchable to a desired diameter and a detachable seal adapted to be removable from the sheath retractor. In another aspect, the detachable seal comprising a valve including a plurality of overlapping sheets defining an access channel that extends into communication with the incision in the patient. Each of the overlapping sheets includes a portion of the perimeter that is not fixed to the inner diameter of the ring, which provide open edges defining the access channel.
1. A surgical access device comprising: a valve structure comprising: a plurality of septum layers; anda ring having an inner diameter for affixing the plurality of septum layers along their perimeter;wherein the plurality of septum layers includes a first septum layer having a hole at a center of t
1. A surgical access device comprising: a valve structure comprising: a plurality of septum layers; anda ring having an inner diameter for affixing the plurality of septum layers along their perimeter;wherein the plurality of septum layers includes a first septum layer having a hole at a center of the first septum layer;wherein the plurality of septum layers comprises a second septum layer comprising a central patch supported by a plurality of spokes extending from the central patch, the central patch being large enough to cover the hole of the first septum layer;wherein the valve structure in a first state forming a zero seal in the absence of the instrument or the arm of the surgeon extending through the valve structure, the valve structure in a second state forming an instrument seal in the presence of the instrument or the arm of the surgeon extending through the valve structure and into a patient. 2. The surgical access device of claim 1 wherein the plurality of septum layers includes a third septum layer having an open edge and a fourth septum layer having an open edge. 3. The surgical access device of claim 2 wherein the open edges of the third septum layer and the fourth septum layer slightly overlap at a center of the ring. 4. The surgical access device of claim 2 wherein the open edges of the third septum layer and the fourth septum layer have a concave configuration. 5. The surgical access device of claim 4 wherein the ring is rigid. 6. The surgical access device of claim 4 wherein the second septum layer and the third septum layer are disposed between the first septum layer and the fourth septum layer. 7. The surgical access device of claim 4 wherein the plurality of septum layers are made of elastomeric material.
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