Endoscopic stone extraction device with improved basket
First Claim
1. An endoscopic debris extraction device comprising:
- a support filament comprising a first end portion;
a sheath comprising a lumen, the support filament disposed in the lumen such that the sheath is slideable with respect to the support filament;
a collapsible rake carried by the first end portion of the support filament, the rake comprising a plurality of shafts, each shaft comprising a respective raking portion that extends laterally away from the respective shaft, wherein all of the raking portions extends away from only one side of a same longitudinal plane defined by the sheath;
the sheath movable with respect to the rake between a first position, in which the shafts are received within the lumen of the sheath, and a second position, in which the shafts extend beyond the sheath and hold the raking portions in position for stone raking operations.
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Accused Products
Abstract
An endoscopic stone extraction device includes a handle that supports a sheath, and a filament such as a wire slidably disposed in the sheath. One end of the wire is mounted to the handle for rotation with respect to the handle and the other end of the handle supports a stone extraction basket. A manipulator is provided on the wire to allow a user to rotate the filament and therefore the basket with respect to the handle. The basket can have a side-facing opening or a rear-facing opening. In either case, a stone retention region is provided with relatively small openings sized to retain stones smaller than two millimeters in diameter. A collapsible rake is disclosed which facilitates the collection and extraction of stone fragments.
93 Citations
32 Claims
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1. An endoscopic debris extraction device comprising:
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a support filament comprising a first end portion; a sheath comprising a lumen, the support filament disposed in the lumen such that the sheath is slideable with respect to the support filament; a collapsible rake carried by the first end portion of the support filament, the rake comprising a plurality of shafts, each shaft comprising a respective raking portion that extends laterally away from the respective shaft, wherein all of the raking portions extends away from only one side of a same longitudinal plane defined by the sheath; the sheath movable with respect to the rake between a first position, in which the shafts are received within the lumen of the sheath, and a second position, in which the shafts extend beyond the sheath and hold the raking portions in position for stone raking operations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An endoscopic debris extraction device comprising:
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a support filament comprising a first end portion; a sheath comprising a lumen, the support filament disposed in the lumen such that the sheath is slideable with respect to the support filament; a collapsible rake carried by the first end portion of the support filament, the rake comprising a plurality of shafts, each shaft comprising a respective raking portion that extends laterally away from the respective shaft; the sheath movable with respect to the rake between a first position, in which the shafts are received within the lumen of the sheath, and a second position, in which the shafts extend beyond the sheath and hold the raking portions in position for stone raking operations, wherein the raking portions do not clamp together when moved from the second position to the first position. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification