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    • 5. 发明授权
    • Endoscopic biopsy forceps instrument having a constant force spring
biasing the jaws closed
    • 具有恒定力弹簧的内窥镜活检钳具有将钳口偏压的功能
    • US5706824A
    • 1998-01-13
    • US650316
    • 1996-05-20
    • John R. Whittier
    • John R. Whittier
    • A61B10/00A61B10/06
    • A61B10/06A61B2017/2845
    • A biopsy forceps instrument includes a flexible coil having one or more pull wires extending therethrough, a clevis coupled to the distal end of the coil, a pair of forceps jaws mounted in the clevis and coupled to the distal end of the pull wire(s), and a proximal handle coupled to the proximal ends of the coil and the pull wires. The handle includes a slotted shaft and a displaceable spool having a cross member which extends through the slot. The shaft is coupled to the coil and the cross member is coupled to the pull wire(s). According to the invention, at least one constant force spring is provided between the shaft and the spool and biases the spool in the proximal direction in order to maintain the jaws in a closed position. According to a presently preferred embodiment of the invention, a pair of flat wound spiral springs are provided with the free flat ends of the springs being coupled to a proximal portion of the shaft. The distal portion of the spool is provided with a pair of cavities in which the spiral portions of the springs reside and a pair of grooves are provided on the interior of the spool through which the flattened spring extends. Alternative embodiments of the invention include one or two springs with the free flat end(s) coupled to either the spool or the shaft and the wound spiral end captured in a cavity or mounted on an axle.
    • 活检镊子器具包括具有延伸穿过其中的一个或多个拉线的柔性线圈,联接到线圈的远端的钩形连接件,安装在U形夹中并连接到拉线的远端的一对钳子爪, 以及耦合到线圈的近端和拉线的近侧手柄。 手柄包括开槽轴和具有延伸穿过槽的横向构件的可移位线轴。 轴连接到线圈,并且横向构件联接到拉线。 根据本发明,至少一个恒力弹簧设置在轴和线轴之间并且在近端方向上偏压线轴,以便将夹爪保持在关闭位置。 根据本发明的目前优选的实施例,一对扁平卷绕螺旋弹簧设置有弹簧的自由平坦端部联接到轴的近侧部分。 线轴的远端设有一对空腔,弹簧的螺旋部分位于其中,一对凹槽设置在卷筒的内部,扁平弹簧穿过该凹槽延伸。 本发明的替代实施例包括一个或两个弹簧,其中自由平坦端部联接到线轴或轴上,并且缠绕螺旋端部被捕获在空腔中或安装在轴上。
    • 7. 发明授权
    • Endoscopic biopsy forceps jaws and instruments incorporating same
    • 内窥镜活检钳夹钳和仪器结合相同
    • US5553624A
    • 1996-09-10
    • US310857
    • 1994-09-22
    • Jose L. FranceseJohn R. Whittier
    • Jose L. FranceseJohn R. Whittier
    • A61B10/06A61B10/00A61B17/00A61B17/28A61B18/14A61B19/00
    • A61B10/06A61B18/1445A61B10/02A61B18/1402A61B2017/00398A61B2017/0088A61B2018/00077A61B2018/00083A61B2018/00107A61B2018/00148A61B2018/126A61B2018/1412A61B2018/1415A61B2018/1455A61B2018/1861A61B2090/064A61M2205/6081
    • Endoscopic biopsy forceps jaws having an outer edge which may be generally U-shaped, circular, or oblate circular are disclosed with a number of teeth which extend along at least a portion of the outer edge where the peaks of the teeth are located upward and inward from the outer edge. In one embodiment, each tooth is defined by a substantially triangular inner surface, a substantially quadrilateral base, and a surface which extends outward and downward from the vertex of the triangular surface to the outer edge of the jaw. Valleys between the teeth have two inclined surfaces which intersect along a line which extends inward and downward from the outer edge of the jaw. In a second embodiment, the peak of each tooth is defined by the vertex of a pyramid having four faces and valleys between these teeth have three substantially flat surfaces which intersect at a vertex which lies downward and inward from the outer edge of the jaw. Alternate embodiments of both the first and second embodiment of the jaws include providing a lip around the outer portion of the outer edge so that the teeth and valleys are spaced farther in from the outer surface of the jaw cup.
    • 公开了具有大致U形,圆形或圆形圆形的外边缘的内窥镜活检钳钳口,其具有多个齿,所述多个齿沿着外缘的至少一部分延伸,其中牙齿的顶部位于上方和内侧 从外边缘。 在一个实施例中,每个齿由基本上三角形的内表面,基本上四边形的基部以及从三角形表面的顶点向下延伸到颌的外边缘的表面限定。 牙齿之间的凹槽具有两个倾斜表面,这些倾斜表面沿着从钳口的外边缘向内和向下延伸的线相交。 在第二实施例中,每个齿的顶点由具有四个面的金字塔的顶点限定,这些齿之间的谷具有三个基本上平坦的表面,该表面在从夹爪的外边缘向下和向内的顶点处相交。 夹爪的第一和第二实施例的另外的实施例包括围绕外边缘的外部部分提供唇缘,使得牙齿和谷部与夹爪杯的外表面间隔更远。