摘要:
Methods and devices are provided for performing gastroplasties. In one embodiment, a method of performing a gastroplasty includes gaining access to a stomach of a patient through an opening formed in the patient's abdominal wall. A multiple port access device having two or more sealing ports through which surgical instruments can be inserted can be positioned in the abdominal opening. Various instruments can be inserted through the various sealing ports to perform certain steps, such as tensioning and cutting tissue, sizing and transecting the stomach, viewing the surgical site, etc. The methods and devices can be used to perform a Magenstrasse and Mill procedure in which only a portion of the stomach is transected.
摘要:
Various compositions, methods, and devices are provided that use fluorescent nanoparticles, which can function as markers, indicators, and light sources. The fluorescent nanoparticles can be formed from a fluorophore core surrounded by a biocompatible shell, such as a silica shell. In one embodiment, the fluorescent nanoparticles can be delivered to tissue to mark the tissue, enable identification and location of the tissue, and/or illuminate an area surrounding the tissue. In another embodiment, the fluorescent nanoparticles can be used on a device or implant to locate the device or implant in the body, indicate an orientation of the device or implant, and/or illuminate an area surrounding the device or implant. The fluorescent nanoparticles can also be used to provide a therapeutic effect.
摘要:
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.
摘要:
An endoscopic clip applying system as described which contains a venting system and a clip applying support system which prevents closure of the mechanism before firing. Also, the system ensures proper loading of the clips and prevents them from falling out during loading. Further, the system describes an easily manufacturable, positively opening system which has minimized size requirements. Furthermore, a lock-out mechanism is provided so that the mechanism may not be inadvertently fired. The shaft resists excessive torque as well as holds the clip in place during firing. There are provisions for sealant and non back-up of the clips, as well as features which make the clip properly placed for closure.
摘要:
A trocar containing a universal seal for sealing against surgical instruments of varying diameter to maintain insufflation in the body cavity is disclosed. The universal seal has an elastomeric sealing component with a centrally located interior region containing an aperture, and a concentrically located sealing region. The sealing region is composed of an integral laminate having an overlaying layer co-molded with an underlying layer. The overlaying layer has a hardness between about 40 Shore A Durometer Scale and about 80 Shore D Durometer Scale. The underlying layer has a hardness between about 5 Shore A Durometer Scale and about 40 Shore A Durometer Scale. The co-molded laminate balances the properties of tear resistance and elasticity which are necessary for a working universal seal, and does so without the need for resilient legs or protectors to facilitate the opening of the aperture of the seal or to prevent tearing when instruments are inserted.
摘要:
A surgical stapler having a trigger attached to a ratcheting mechanism for preventing the refiring of the stapler trigger with a staple loaded within a forming mechanism. In addition, the mechanism contains driver buffering means to prevent the sharp reduction in opposing force driving formation of a staple. The staples are constantly maintained in proper orientation during transfer from a track to the forming site, and are self-centering on the former, and have an oversized crown so that cold-worked areas on each staple do not hinder forming.
摘要:
A two-stage process for treating acidic gypsum pond water for reuse or for discharge is disclosed. The first stage blends raw acidic pond water with recycled lime-treated slurry from the second stage of the process. The resulting elevation in pH causes CaF.sub.2 and SiO.sub.2 to precipitate and the precipitated material is discarded onto the gypsum storage area. The supernatant water can be used in the wet grinding mill and/or further treated in a second stage with lime to produce treated water which meets government environment standards for discharge. The slurry of calcium phosphate formed in the second (liming) stage is recycled to the first stage.
摘要:
A surgical stapling instrument suitable for performing a gastrointestinal anastomosis is provided. The stapling instrument incorporates an improved staple actuator mechanism operable by separate control buttons to accomplish its stapling and cutting actions in two stages. The two stage operation of the stapling instrument reduces the maximum force required to operate the instrument. The improved actuator mechanism permits selection of different staple heights to be produced by the same instrument. In addition, the actuator mechanism is designed to stabilize the upper and lower jaw members by providing longitudinal and lateral support along substantially the entire length of the operative portions of the jaw members. Preferably, the actuator mechanism comprises an elongated, I-beam structure slidably mounted for longitudinal movement relative to the jaw members. The I-beam assembly includes upper and lower flanges which provide both longitudinal and lateral support along substantially the entire length of the anvil and staple cartridge carrying portions of the jaw members. A sleeve slidably mounted on one of the I-beam flanges allows the spacing of the jaw members to be adjusted to produce one of two predetermined closed staple heights.
摘要:
A subfloor trenchduct (10) construction in which the side wall members (14, 16) and lid-supporting means (37) are constructed of galvanized steel in order to provide a reduced cross section for the component members and thereby maximizing the availability of internal space within the trenchduct (10) for electric service. The galvanized steel construction obviates larger cross sections previously employed in utilization of aluminum components which detracted from the effective use of internal space of the duct, and the aluminum components required protective coating since aluminum, when exposed to alkaline concrete, experiences deterioration of the components. The lid-supporting means (37) is made vertically adjustable relative to floor level so that prior to pouring of the concrete (66) the lid (30) is accurately located in relation to the floor.
摘要:
Methods and apparatuses for cutting thin film solar cells are provided. According to various implementations, the methods involve cutting a substrate having thin film solar cell materials deposited thereon by inducing a tear along the cutting line. Simultaneously with the tearing, the torn edges may be plastically deformed to produce a desired torn edge cross-sectional profile. Such a fracture may be induced by clamping regions of the substrate while simultaneously displacing the clamped regions relative to each other through the thickness of the substrate as the substrate is fed through the clamps providing the clamping. Apparatuses for cutting are also provided. According to various implementations, the apparatus may have cutter rollers and support rollers configured with an adjustable radial overlap.