摘要:
A method and apparatus for mechanically lifting the abdominal wall away from underlying abdominal organs for laparoscopic surgery without insufflation. In the method an expansible device is inserted in the abdominal cavity through a small incision in a collapsed state and then expanded into engagement with an extensive area of the abdominal wall. Lifting force is then applied to the device for peritoneal retraction. The device takes the form of mechanical rods or arms and/or balloons. In the balloon embodiments lifting force may be applied externally of the abdominal cavity, or internally of the cavity by balloon inflation. Certain of the balloon embodiments are of an annular or U-shaped configuration and include a membrane for draping the internal organs and/or a centrally located balloon for lateral expansion. The balloons may be provided with an internal endoscope for viewing. The method also provides for laparoscopic gallbladder removal, either to the interior or exterior of the balloons. A needle is provided to laparoscopically pierce and drain the gallbladder. The needle carries a balloon inflatable to grip the gallbladder for retraction and removal.
摘要:
A method and apparatus for mechanically lifting the abdominal wall away from underlying abdominal organs for laparoscopic surgery without insufflation. In the method an expansible device is inserted in the abdominal cavity through a small incision in a collapsed state and then expanded into engagement with an extensive area of the abdominal wall. Lifting force is then applied to the device for peritoneal retraction. The device takes the form of mechanical rods or arms and/or balloons. In the balloon embodiments lifting force may be applied externally of the abdominal cavity, or internally of the cavity by balloon inflation. Certain of the balloon embodiments are of an annular or U-shaped configuration and include a membrane for draping the internal organs and/or a centrally located balloon for lateral expansion. The balloons may be provided with an internal endoscope for viewing. The method also provides for laparoscopic gallbladder removal, either to the interior or exterior of the balloons. A needle is provided to laparoscopically pierce and drain the gallbladder. The needle carries a balloon inflatable to grip the gallbladder for retraction and removal.
摘要:
An inflatable retractor including a main envelope enclosing a main chamber is provided. The main envelope is provided in a collapsed state. An elastomeric window is also provided. The main envelope of the inflatable retractor is placed adjacent the organ inside the body, and the main chamber is expanded to an expanded state to retract the organ. Following inflation of the main chamber to the expanded state, the elastomeric window is attached to the main envelope inside the main chamber to cover part of the main envelope. The surgical instrument is passed into the main chamber. An aperture is pierced in the pan of the main envelope covered by the elastomeric window to provide access for the surgical instrument to contact the tissue. The elastomeric window provides a gas-tight seal to maintain the main chamber in the expanded state.
摘要:
A first inflatable retraction device has a first inflatable chamber and a non-pressurized chamber inside the main chamber. The non-pressurized chamber is expanded by inflating a second inflatable chamber. The non-pressurized chamber enables the main chamber to remain inflated when an aperture is cut in the envelope of the main chamber, through which treatment is carried out. A second inflatable retraction device has an inflatable retractor and a maintainer. The inflatable retractor retracts the organ and the maintainer maintains the organ in its retracted condition after the inflatable retractor is deflated. The maintainer can be inflatable, and can be inside or outside the inflatable retractor. A self-retracting endoscope has an optical assembly with an expandable retractor fitted to its distal end. The distal end of the endoscope is inserted into the body with the retractor in a collapsed condition. The retractor is then expanded to retract organs that would otherwise obstruct the view from the distal end of the optical assembly. After observations are complete, the retractor is returned to its collapsed condition. An insertion tube enables cylindrical objects, such as packaged inflatable retraction devices, to be pulled, instead of pushed, into the body. The additional chamber of an inflatable retraction device having two inflatable chambers is filled with a slurry of a particulate solid in a liquid. The liquid is removed and the additional chamber evacuated to consolidate the particulate solid. This increases the retracting strength of the additional chamber.
摘要:
An apparatus for retracting an organ to gain access to treat a tissue. The apparatus has a main envelope, a second envelope, a first inflation device and a second inflation device. The main envelope encloses a main chamber, and includes a window and a removable window. The second envelope covers substantially all the main envelope, except the window and the removable window. The second envelope and the main envelope enclose a second chamber outside the main chamber. The first inflation device passes a fluid into the main chamber to expand the main chamber and the second chamber from a compacted state to retract the organ. The second inflation device passes a fluid into the second chamber to further expand the second chamber to maintain the organ in its retracted state after fluid has been released from the main chamber.
摘要:
A method and apparatus for removing a pre-placed prosthetic appliance anchored in place in a bone recess by a cement mantle and conditioning the recess for receipt of a replacement appliance. The preplaced appliance is first pulled from the mantle of hardened cement holding it within the recess, thus leaving a cavity within the mantle. A screw threaded post having nuts threadably engaged therewith at longitudinally spaced locations is then anchored within the cavity with a new mass of cement. Thereafter, the post is threadably disengaged from the nuts, leaving the nuts in place within the new mass of cement. A pulling tool is then successively engaged with the nuts and tensioned to incrementally remove the mantle from the recess.
摘要:
A trocar assembly consisting of a trocar tube subassembly and a separable, interfitting trocar subassembly is described. The trocar tube assembly includes a hollow body having a first front opening in which a trocar tube is mounted, a second rear opening for receiving the trocar subassembly, and a manually pivotable flap valve mechanism mounted within the body. The trocar subassembly includes a head having a central bore in which are mounted the (1) rear ends of an elongated obturator having a pyramidal-shaped piercing head with a triangular-shaped base, and a concentric tubular shield having a triangular shaped front opening for the piercing head that is formed by bevels in its leading edge that have approximately the same slope as the surfaces that define the three sides of the piercing head, and (2) a coil spring backing the shield for biasing the shield between retracted and extended positions. When the two subassemblies are fit together, the obturator and concentric shield extend through the hollow body with the front wall of the head fitting within a recess in the rear wall of the hollow body such that the trocar assembly cannot be rotated without disengaging the two subassemblies. The shield has a slot in its outer wall that is engaged by the flap valve to lock the shield in its extended position. The shield may be unlocked by pivoting the flap valve out of the slot, sliding the trocar assembly rearwardly so that the front wall of the head is clear of the recess in the rear wall of the hollow body, rotating the trocar subassembly to a position in which the flap valve and slot are not aligned and sliding the front wall of the trocar assembly back into the recess in the rear wall of the hollow body.
摘要:
A trocar assembly (70) formed from a trocar tube subassembly (74) and a separable, interfitting trocar subassembly (72). The trocar tube assembly includes a head (112) having a bore (120) into which a trocar tube (116) is fitted and a manually operated slide valve assembly (118) mounted transversely of the bore in the head. The valve has a bore (134) through it that may be aligned with the bore in the head by movement of the valve. The trocar subassembly includes a head (76) that has a bore (92) extending partly through it in which a trocar obturator (82) and a concentric tubular shield (86) are mounted such that the shield is capable of limited axial movement relative to the obturator between a normal, extended position in which the shield effectively covers the piercing tip (84) of the obturator and a retracted position in which the tip is exposed. The obturator and shield are inserted through the bore in the trocar tube subassembly head, the slide valve bore and the trocar tube. The bore in the slide valve has a radial tooth (136) in it that engages a slot (138) in the shield to reversibly lock the shield in its extended position when the slide valve is in its normal position. The valve is depressed manually to disengage the tooth to allow axial movement of the shield or separation of the trocar subassembly from the trocar tube subassembly.
摘要:
A robotic surgical system includes an instrument driver and an instrument assembly operatively coupled to the instrument driver such that mechanisms of the instrument driver operate or control movement, operation, or both, of components of the instrument assembly. The instrument assembly components include an elongate flexible guide instrument, an optical light source, a camera and a working tool, wherein the light source, camera, and working tool are carried in one or more lumens of the guide instrument. An operator control station is operatively coupled to the instrument driver via a remote communication link. The instrument assembly further includes an inflatable visualization balloon carried on a distal end portion of the guide instrument, the light source and camera having distal ends located within an interior of the balloon, the balloon comprising a lumen extending from the guide instrument to a distal facing wall of the balloon, such that the working instrument may extend from a respective lumen of the guide instrument through the balloon lumen to contact body tissue when the distal end of the guide instrument is positioned in an interior body region.
摘要:
A robotic catheter system includes a controller with a master input device. An instrument driver is in communication with the controller and has a guide instrument interface including a plurality of guide instrument drive elements responsive to control signals generated, at least in part, by the master input device. An elongate guide instrument has a base, distal end, and a working lumen, wherein the guide instrument base is operatively coupled to the guide instrument interface. The guide instrument includes a plurality of guide instrument control elements operatively coupled to respective guide drive elements and secured to the distal end of the guide instrument. The guide instrument control elements are axially moveable relative to the guide instrument such that movement of the guide instrument distal end may be controlled by the master input device.