Abstract: A medical retrieval basket device, comprising a plurality of basket wires forming a basket, the basket including a wire collector at its distal end, the wire collector having a substantially rigid body for receiving the wires, the wire collector securing the wires at the distal end of the basket so as to provide a substantially tipless basket.

Abstract: A bipolar endoscopic device is provided having a detachable power cord with a plug capable of forming a sealed connection with the endoscopic device. The plug is connected at a back face of a movable guide member of the endoscopic device and can be oriented in different orientations to accommodate different operators. The detachable plug forms a sealed connection with the endoscopic device so that the electrosurgical connection cannot be short-circuited by the outside environment such as a saline irrigation fluid.

Abstract: Rational combinatorial computational methods use accurate quantum mechanical and molecular modeling techniques to identify optimum polymerization catalysts for polar olefins. Using mechanistic information to model the polymerization reaction, the methods systematically vary components of a catalyst template to calculate a potential energy surface for a number of catalyst candidates. The potential energy surfaces are compared to identify a catalyst for the catalytic polymerization reaction. Internal Lewis acid single site polar olefin polymerization catalyst compositions and compounds for polymerizing polar olefins are also described.

Abstract: A sheath assembly for a medical instrument such as an endoscope comprises an outer sheath and inner sheath and novel means for providing out-flow of fluids from a surgical site. The outer sheath is disposed about at least a portion of an inner sheath. The assembly has an outflow aperture disposed in an outer wall at the distal end of the assembly. The outflow aperture is the initiation for an outflow conduit that is generally longitudinally disposed in a distal tip portion of the assembly and communicates fluid to a main outflow channel formed between the outer sheath and inner sheath. In a preferred embodiment, the outflow aperture and conduit are disposed wholly or partially in a dielectric tip element. The novel assembly allows improved outflow by disposing the outflow aperture at a more distal end of the instrument than conventional devices such that the outflow aperture is less prone to blockage by surrounding tissue or debris when used in tight anatomical passages.

Abstract: A bipolar endoscopic device is provided having a detachable power cord with a plug capable of forming a sealed connection with the endoscopic device. The plug is connected at a back face of a movable guide member of the endoscopic device and can be oriented in different orientations to accommodate different operators. The detachable plug forms a sealed connection with the endoscopic device so that the electrosurgical connection cannot be short-circuited by the outside environment such as a saline irrigation fluid.

Abstract: A sheath assembly for a medical instrument such as an endoscope comprises an outer sheath and inner sheath and novel means for providing out-flow of fluids from a surgical site. The outer sheath is disposed about at least a portion of an inner sheath. The assembly has an outflow aperture disposed in an outer wall at the distal end of the assembly. The outflow aperture is the initiation for an outflow conduit that is generally longitudinally disposed in a distal tip portion of the assembly and communicates fluid to a main outflow channel formed between the outer sheath and inner sheath. In a preferred embodiment, the outflow aperture and conduit are disposed wholly or partially in a dielectric tip element. The novel assembly allows improved outflow by disposing the outflow aperture at a more distal end of the instrument than conventional devices such that the outflow aperture is less prone to blockage by surrounding tissue or debris when used in tight anatomical passages.

Abstract: A medical retrieval basket device, comprising a plurality of basket wires forming a basket, the basket including a wire collector at its distal end, the wire collector having a substantially rigid body for receiving the wires, the wire collector securing the wires at the distal end of the basket so as to provide a substantially tipless basket.

Abstract: A medical instrument comprising a Veress needle, a dilating obturator, and a cannula. The Veress needle has a tubular safety obturator with an opening in its front section at a needle tip of the Veress needle. A guide with a guide slot can be positioned in a patient's vagina against the posterior fornix of the vagina to guide the Veress needle through the vaginal and peritoneal walls. A guide wire may be passed through the Veress needle and through the hole in the peritoneum wall formed by the Veress needle to guide the dilating obturator through the hole.

Abstract: A grooved slider forming part of an electrode for use with a resectoscope is shown. The electrode includes an electrode lead member having an elongated conductor member. The elongated conductor member has a first end and a second end with an insulative cover extended therebetween. The first end has a protruding electrode adapted to be electrically connected to an electrosurgical generator and the second end terminates in an active member. An electrode support member is operatively connected to the active member. The electrode support member has an elongated semi-rigid bifurcated arm terminating in a conductive core spaced a predetermined distance from the active member. The bifurcated arm is covered with an insulative material except at the distal end where the grooved slider is located.

Abstract: A medical instrument comprising a Veress needle, a dilating obturator, and a cannula. The Veress needle has a tubular safety obturator with an opening in its front section at a needle tip of the Veress needle. A guide with a guide slot can be positioned in a patient's vagina against the posterior fornix of the vagina to guide the Veress needle through the vaginal and peritoneal walls. A guide wire may be passed through the Veress needle and through the hole in the peritoneum wall formed by the Veress needle to guide the dilating obturator through the hole.

Abstract: A shaped conductive core electrode member having an elongated curved sharp leading cutting edge forming part thereof for use with a resectoscope is shown. The electrode includes an electrode lead member having an elongated conductor member having a first end and a second end with an insulative cover extended therebetween. The first end has a protruding electrode adapted to be electrically connected to an electrosurgical generator. The second end terminates in an electrode support member which is operatively connected to or forms an integral part of the shaped electrode as an active member. The electrode support member has an elongated semi-rigid bifurcated arm terminating in a conductive core. The bifurcated arm is covered with an insulative material except at the distal end where the shaped electrode is located.

Abstract: A resectoscope with a working element and an electrode. The working element has a movable actuator assembly with a receiving area for receiving a proximal end of the electrode. The receiving area has an entrance, a plug area, and a curved section between the entrance and the plug area. The electrode has a proximal end with a connection section for connection to an electrical plug connector in the plug area. The proximal end also has a flexible section next to the connection section. The flexible section resiliently deforms along the curved section of the receiving area in the actuator assembly.

Abstract: An endoscope with a working element and a sheath assembly. The sheath assembly has an outer sheath with an outer tube, and inner sheath with an inner tube and an insulating tip. An inflow channel is formed inside the inner tube. An outflow channel is formed between the inner and outer tubes. The insulating tip is connected to the front of the inner tube and has two holes; one for inflow and one for outflow. The top side of the inner tube has a flat shape to form an enlarged outflow channel area between the flat top side and the outer tube.

Abstract: A continuous flow cystoscope is shown. The cystoscope includes an outer sheath having an outer surface, a hollowed out central area extending along a central axis which extends therethrough, a proximal section and a distal section. The distal section includes a distal end having a member defining an opening. In the preferred embodiment, the outer sheath opening is formed at an acute angle relative the central axis. The distal section of the outer sheath includes an elongated fenestra extending distally therefrom along a path substantially parallel to and spaced from the central axis. The proximal section of the outer sheath includes an inlet port and an outlet port. An inner member is positioned within the hollowed out central area of the outer sheath and includes an inner member channel having a first passageway which is adapted to receive a telescope and a second passageway which is utilized for passing a working tool, such as a laser fiber.

Abstract: A continuous flow resectoscope having a working element and a sheath assembly removably connected to the working element. The sheath assembly has an outer sheath removably attached to an inner sheath. The improvement comprises a rotatable connection of the inner sheath to the working element, wherein the working element is rotatable relative to both the inner and outer sheaths.

Abstract: A continuous flow cystoscope is shown. The cystoscope includes an outer sheath having an outer surface, a hollowed out central area extending along a central axis which extends therethrough, a proximal section and a distal section. The distal section includes a distal end having a member defining an opening. In the preferred embodiment, the outer sheath opening is formed at an acute angle relative the central axis. The distal section of the outer sheath includes an elongated fenestra extending distally therefrom along a path substantially parallel to and spaced from the central axis. The proximal section of the outer sheath includes an inlet port and an outlet port. An inner member is positioned within the hollowed out central area of the outer sheath and includes an inner member channel having a first passageway which is adapted to receive a telescope and a second passageway which is utilized for passing a working tool, such as a laser fiber.

Abstract: A continuous flow hysteroscope is shown. The hysteroscope includes an outer sheath having an outer surface, an inner surface and a hollowed-out central area extending along a central axis which extends therethrough. The outer sheath has a proximal section and a distal section. The distal end includes a plurality of openings communicating between the outer surface and inner surface. The openings have a predetermined shape and pass fluid exterior to the distal section therethrough and into the hollowed-out central area. The proximal section of the outer sheath includes an outlet and an inlet. An inner member is positioned within the hollowed-out central area and includes a first channel which is adapted to receive a telescope. A second channel, which is substantially parallel to the first channel is utilized for passing a working tool. The first and second channel are operatively coupled to an inlet for passing fluid therethrough and out of the distal end outer sheath.

Abstract: An endoscope having an elongated shaft which terminates in a deflectable distal tip is shown. The elongated shaft includes a first elongated sheath tube having a deflectable distal section. The deflectable distal section terminates in a distal tip having a triangular shaped cross-sectional area. The elongated shaft also includes a second semi-rigid elongated tube which is shorter in length than the first elongated sheath tube. The difference in length enables the deflectable distal section to extend beyond the end of the second semi-rigid elongated sheath tube and to be deflectable. The second semi-rigid elongated sheath tube encloses the proximal section of the first elongated sheath tube.

Abstract: A sheath is provided having a tube and a latch receptacle for removably connecting the sheath with a cooperating working element. The latch receptacle is static and has means for receiving at least a portion of a movable latch of the working element such that the latch receptacle can be disconnected from the working element without touching the sheath. A continuous flow resectoscope sheath assembly may also be provided with both an inlet post and an outlet post on the outer sheath portion.