570 results about "Surgical access" patented technology

A surgical access system (100) comprises an access port (5), a rigid cannula having a shaft (11) and a laparoscopic surgical instrument (101). The access port (5) comprises a seal (6) and a retractor. The retractor comprises a distal O-ring (71), an outer proximal ring member (77), an inner proximal ring member (78) and a sleeve (72). The sleeve (72) extends distally from the inner proximal ring member (78) to the distal O-ring (71) in a first layer, is looped around the distal O-ring (71), and extends proximally in a second layer between the inner proximal ring member (78) and the outer proximal ring member (77). The instrument (101) comprises a shaft (103) with a rigid proximal region (104), a flexible intermediate region (105), and a rigid distal region (106). The instrument shaft (103) may be inserted through the cannula shaft (11). The instrument (101) has a rigid end effector (107) releasably coupled to the distal end (108) of the instrument shaft (103). An actuator (109) for actuating the end effector (107) is provided at the proximal end (110) of the instrument shaft (103). The actuator (109) is movable along the instrument shaft (103) parallel to the longitudinal axis of the instrument shaft (103).

An apparatus and method for reducing post-operative ileus and/or gastric stasis is described. The method can include applying to the intestine a therapeutically effective amount of a composition comprising a drug that is effective in reducing post-operative ileus and/or gastric stasis, such as by introducing the composition through a surgical access device, such as a trocar or endoscope. The apparatus can include a surgical fastener and a buttress comprising the composition.

An apparatus and method for reducing post-operative ileus and/or gastric stasis is described. The method can include applying to the intestine a therapeutically effective amount of a composition comprising a drug that is effective in reducing post-operative ileus and/or gastric stasis, such as by introducing the composition through a surgical access device, such as a trocar or endoscope. The apparatus can include a sheet of material, a surgical fastener, or a buttress comprising the composition.

The invention is directed to a hand access system that provides hand access to a surgical area while maintaining pneumoperitoneum during laparoscopic surgery. The hand access system comprises a sheath retractor adapted to dilate a wound stretchable to a desired diameter, the sheath retractor includes a first ring being adapted for disposition interiorly of the wound, a second ring being adapted for disposition exteriorly of the wound, and a sheath being disposed in a generally cylindrical form between the first ring and the second ring and operable to exert a radial retraction force on the wound. The hand access system further comprises a detachable hand seal adapted to be removable from the second ring of the sheath retractor. The sheath retractor may be formed of an elastomeric material, and the hand seal may be formed of a gel material and includes a slit providing an instrument seal in the presence of an instrument or hand and a zero seal in the absence of the instrument or hand. In another aspect, there is disclosed a surgical access device adapted for disposition relative to an incision in a patient comprising a valve including a plurality of overlapping sheets defining an access channel, and a ring having an inner diameter for holding the valve by fixing each of the overlapping sheets along a portion of the perimeter, the access channel 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. The open edges slightly overlap at the center of the ring. The open edges may have different shapes including at least one of a straight edge, concave, convex and a cross-configuration. The hand access device may further comprise a septum seal formed at the proximal and distal ends of the ring.

A system for accessing a surgical target site and related methods, involving an initial distraction system for creating an initial distraction corridor, and an assembly capable of distracting from the initial distraction corridor to a secondary distraction corridor and thereafter sequentially receiving a plurality of retractor blades for retracting from the secondary distraction corridor to thereby create an operative corridor to the surgical target site, both of which may be equipped with one or more electrodes for use in detecting the existence of (and optionally the distance and/or direction to) neural structures before, during, and after the establishment of an operative corridor to a surgical target site.

A surgical access device includes a single valve that forms a seal with the body wall and provides an access charnel into a body cavity. The valve has properties for creating a zero seal in the absence of an instrument as well as an instrument seal with instruments having a full range of instrument diameter. The valve can include a gel and preferably an ultragel comprised of an elastomer and an oil providing elongation greater than 1000 percent and durometer less than 5 Shore A. The shore valve can be used as a hand port where the instrument comprises the arm of a surgeon, thereby providing hand access into the cavity. A method for making the surgical access device includes the combining or a gelling agent with an oil, preferably in a molding process. A method for using the device includes steps for creating an opening with the instrument. In a particular process, an organ can be removed from the body cavity through the single valve to create an organ seal while the organ is addressed externally of the body cavity. The valve and method are particularly adapted for laparoscopic surgery wherein the abdominal cavity is insufflated with a gas thereby requiring the zero seal, the instrument seal, and the organ seal in various procedures.

Various devices are provided for allowing multiple surgical instruments to be inserted through a single surgical access device at variable angles of insertion, allowing for ease of manipulation within a patient's body while maintaining insufflation. Safety shields and release mechanisms are also provided for use with various surgical access devices.

A device for retracting edges of an incision in a surface to form an opening including: a flexible, tubular skirt having an upper end, a lower end, and a channel therebetween; a ring connected to the lower end of the skirt for maintaining the lower end in an open configuration and defining an exit opening to the channel; and an inflatable collar connected to the skirt and surrounding the upper end. The ring is designed to fit through the incision and remain under the surface when it is oriented parallel to surface. The collar, when inflated, maintains the upper end in an open configuration and defines an entry opening to the channel. During use, the ring is inserted through the incision and the collar is inflated while remaining outside of the incision, thereby drawing the skirt against the edges of the incision and retracting the edges of the incision to form the opening. The retracting device can be included in a surgical access port, which further includes a flexible sleeve connected to at least one of the inflatable collar and the skirt, extending the channel from the exit opening of the skirt to an open end of the flexible sleeve distal to the skirt. The device can include a light source in the vicinity of the exit opening.

A system for accessing a surgical target site and related methods, involving an initial distraction system for creating an initial distraction corridor, and an assembly capable of distracting from the initial distraction corridor to a secondary distraction corridor and thereafter sequentially receiving a plurality of retractor blades for retracting from the secondary distraction corridor to thereby create an operative corridor to the surgical target site, both of which may be equipped with one or more electrodes for use in detecting the existence of (and optionally the distance and/or direction to) neural structures before, during, and after the establishment of an operative corridor to a surgical target site.

A surgical access apparatus includes a liner base and an access housing for positioning outside the body. The liner base includes an inner member adapted for insertion through an opening within body tissue for positioning within the body; a sleeve member connected to the inner member and dimensioned to extend from the inner member through the opening within the body tissue, and a plurality of tensioning elements connected to the inner member and associated with the sleeve member to impart a tensioning effect on the sleeve member. The access housing includes a first element and a second element. The second element is operatively connected to the tensioning elements and adapted for rotational movement relative to the first member to cause the tensioning elements to displace the inner member toward the access housing and to cause the sleeve member to engage and retract tissue defining the opening within the body. The tensioning members are adapted to move relative to the sleeve member upon rotation of the second element and may be embedded within the sleeve member. A seal is preferably mounted to the access housing and is adapted to form a fluid tight seal about an object inserted therethrough. A zero closure valve may also be mounted relative to the liner member for forming a fluid tight seal in the absence of an object positioned therethrough. The second member of the access housing is adapted to be selectively secured at a predetermined rotational relationship with respect to the first member to provide for selective tensioning of the tensioning elements and selective retraction of tissue.

Various devices are provided for allowing multiple surgical instruments to be inserted through a single surgical access device at variable angles of insertion, allowing for ease of manipulation within a patient's body while maintaining insufflation. Safety shields and release mechanisms are also provided for use with various surgical access devices.

A surgical access device is adapted to facilitate access through an incision in a body wall having an inner surface and an outer surface, and into a body cavity of a patient. The device includes first and second retention members adapted to be disposed in proximity to the outer surface and the inner surface of the body wall, respectively. A membrane extending between the two retention members forms a throat which is adapted to extend through the incision and form a first funnel extending from the first retention member into the throat, and a second funnel extending from the second retention member into the throat. The throat of the membrane has characteristics for forming an instrument seal in the presence of an instrument and a zero seal in the absence of an instrument. The first retention member may include a ring with either a fixed or variable diameter. The ring can be formed in first and second sections, each having two ends. Couplings can be disposed between the ends to accommodate variations in the size of the first retention member. The first retention member can also be formed as an inflatable toroid, a self-expanding foam, or a circumferential spring. A plurality of inflatable chambers can also provide the surgical access device with a working channel adapted for disposition across the body wall. A first retention member with a plurality of retention stations functions with a plurality of tethers connected to the membrane to change the shape of the membrane and the working channel. A stabilizing platform can be used to support the access device generally independent of any movement of the body wall.