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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0158069 (1993-11-24) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 486 인용 특허 : 0 |
A device for retrograde hole opening through tissue has a member elongate on an axis with a cross section shaped to insert axially through external tissue. A distal and a proximal end on the member respectively enter the tissue during placement and remain outside the tissue for control. A tip at the
A device for retrograde hole opening through tissue has a member elongate on an axis with a cross section shaped to insert axially through external tissue. A distal and a proximal end on the member respectively enter the tissue during placement and remain outside the tissue for control. A tip at the distal end has a deployable tissue divider with one or more tissue parting elements and each has a splitter. The tissue parting elements are located within the cross sectional dimensions of the member in a storage position and are movable relative to the tip for placement in an exposed position relative to the tip when shifted from storage so that the splitter thereof splits tissue during retrograde extraction along the axis and contact with tissue. Linkage between the proximal end and the deployable tissue divider retains each of the tissue parting elements with its splitter exposed. The deployable tissue divider has an electrode for transmitting radio frequency energy received from the proximal end to at least each splitter. A return path completes the circuit to provide an electrosurgical effect during the retrograde extraction. A method of placing the device for retrograde hole opening aligns the axis of the elongate member normal to the outside abdominal wall of the body, places the distal end through the tissue and leaving the proximal end outside of the tissue, deploys the tissue divider having one or more tissue parting elements that are first located in a storage position within the cross section to an exposed position with the splitter of each element positioned to split tissue, moves each element axially while exposed and fixed and splits tissue during extraction from the body cavity.
A device for retrograde hole opening through tissue comprising: a member elongate relative to an axis thereof and being substantially longer than its cross sectional dimensions, the member capable of insertion through tissue in a direction generally along its axis through external tissue of a human
A device for retrograde hole opening through tissue comprising: a member elongate relative to an axis thereof and being substantially longer than its cross sectional dimensions, the member capable of insertion through tissue in a direction generally along its axis through external tissue of a human or animal body during a placement procedure; a distal end and a proximal end on the member, the distal end for first entering the tissue during placement and the proximal end for control of the distal end of the member while remaining outside the tissue; a tip near the distal end of the member for placement through the external tissue of a human or animal; a deployable means for tissue dividing having tissue parting elements and each with a means for splitting, the tissue parting elements located in a storage position generally carried along and within the cross sectional dimension of the member, each of the tissue parting elements movable relative to the axis for placement in an exposed position relative to the tip when shifted from storage so that the means for splitting thereof splits tissue during retrograde extraction by contacting tissue during retrograde movement of the member along the axis, and linkage between the proximal end and the deployable means for tissue dividing for use in the selective disposition thereof by activating the linkage at the proximal end to position and retain each of the tissue parting elements with means for splitting in the exposed position so that upon withdrawal of the member after placement through the external tissue the tissue parting elements enlarges the initial puncture or incision simply while moving retrograde through the tissue.
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