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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0294454 (1994-08-23) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 285 인용 특허 : 0 |
The invention provides a system and method for manipulating a tissue structure within a body cavity. In a preferred embodiment, the invention provides a system and method for retracting and supporting the heart wall to provide access into the heart during a cardiac surgical procedure. The system com
The invention provides a system and method for manipulating a tissue structure within a body cavity. In a preferred embodiment, the invention provides a system and method for retracting and supporting the heart wall to provide access into the heart during a cardiac surgical procedure. The system comprises a tissue supporting member (500) positionable through a first percutaneous intercostal penetration into the thoracic cavity. The tissue supporting member has a contact surface (502) configured for supporting a portion of the heart wall. A retractor (40a) includes a shaft (400) with a proximal end, a distal end configured for introduction through a second percutaneous penetration and a diameter less than the width and length of the contact surface. A hook (428) is slidably coupled to the distal end of the shaft for releasably holding the tissue supporting member such that the contact surface is arranged transversely to the longitudinal axis of the shaft. With this configuration, the shaft and tissue supporting member can be introduced through two separate percutaneous penetrations and connected together within the thoracic cavity for retraction of the heart wall.
A method of retracting an incised opening in a wall of a chamber in a patient\s heart, the method comprising the steps of: introducing a tissue supporting member, releasably connected directly to an introducer, into the patient\s thoracic cavity through a first percutaneous intercostal penetration,
A method of retracting an incised opening in a wall of a chamber in a patient\s heart, the method comprising the steps of: introducing a tissue supporting member, releasably connected directly to an introducer, into the patient\s thoracic cavity through a first percutaneous intercostal penetration, within a first intercostal space between two adjacent ribs, the tissue supporting member having a contact surface with a first length and a first width; introducing a shaft having a longitudinal axis through a second percutaneous intercostal penetration, within a second intercostal space between two adjacent ribs, the shaft having a diameter smaller than the first width and the first length; coupling the tissue supporting member to the shaft within the patient\s thoracic cavity while holding the tissue supporting member with the introducer; positioning the tissue supporting member within an incised opening in a chamber wall of the patient\s heart; manipulating said shaft from outside the patient\s chest to position the contact surface of the tissue support member into supportive contact with the chamber wall; and applying a force to the shaft to retract the chamber wall thereby enlarging the opening.
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