Valve assembly
View Patent ↗A valve assembly for the sealed reception of an elongated object is provided. The assembly includes a valve body defining at least one opening configured and dimensioned to permit entry of an elongated object and defining a central longitudinal axis, and an elongated seal member having a resilient sealing structure and defining an aperture in general alignment with the opening of the valve body whereby the aperture is configured and dimensioned such that upon insertion of the object into the aperture, the resilient sealing structure resiliently engages the outer surface of the object in a tight manner. The sealing structure includes a plurality of elongated bristle members attached to the seal member. The bristle member are positioned to engage the elongated object upon at least partial insertion of the elongated object into the valve body. Each bristle member is adapted to be displaced relative to the longitudinal axis to facilitate expansion of the aperture of the seal member upon entry of the elongated object therein.
1. A surgical method: comprising the steps of:
insufflating a body cavity with fluids to at least partially distend the body cavity;
introducing a sleeve member through tissue to access the body cavity, the sleeve member defining a longitudinal axis and having a longitudinal opening;
advancing a surgical object through the longitudinal opening of the sleeve member to a position adjacent targeted tissue within the body cavity;
establishing a substantial sealed relation about the surgical object with a non-inflatable seal member, the seal member mounted with respect to the sleeve member and having a plurality of bristles, the bristles arranged to define a seal passage to receive the surgical object whereby end portions of the bristles surround the object and form a substantial fluid-tight seal thereabout, the seal member includes a biasing member associated therewith;
performing a surgical procedure including manipulating the surgical object in a radial direction with respect to the longitudinal axis of the sleeve member whereby the seal member correspondingly moves in a radial direction to accommodate the manipulation of the surgical object while maintaining the substantial fluid tight seal about the surgical object, and wherein the seal member is normally biased toward a position where the seal passage is in general longitudinal alignment with the central longitudinal axis of the sleeve.
2. The surgical method according to claim 1 wherein the end segments of at least some of the bristles are arranged to define an internal taper leading to the passage of the seal member, wherein, during the step of advancing, the internal taper facilitates passage of the surgical object toward and through the seal passage.
3. The surgical method according to claim 2 wherein the bristles are arranged to define a central opening, the central opening being the passage, and wherein, during the step of advancing the surgical object, the central opening receives the surgical object.