Wound retraction apparatus

摘要

A surgical wound retractor is adapted to dilate a wound stretchable to a desired diameter, the retractor includes a first ring (14b) having a diameter greater than that desired for the wound and being adapted for disposition interiorly of the wound. A second ring (83) has a diameter greater than that desired for the wound and is adapted for disposition exteriorly of the wound. A plurality of retraction elements are disposed in a generally cylindrical relationship to each other, between the first ring and the second ring. These elements extend through the wound to exert a radial retraction force on the wound which is dependent on the distance separating the first ring and the second ring. Retraction elements, both distensible and non-distensible are contemplated with appropriate attachment means at the rings to provide for variations in the retraction force. With a suitable retraction sleeve, a third ring (16b) can be provided to form a circumferential retainer to vary the retraction force. Rings can also be made inflatable or self-expanding to vary the retraction force. The claimed embodiment is adopted to roll the second ring circumferentially of the third ring to form the circumferential retainer.