摘要:
Immobilization and/or retrieval of material from a body can be accomplished, in accordance with the invention, with a device that includes a sheath and a basket. The basket is movable relative to the sheath from a retracted position in which the basket is withdrawn within the sheath and an expanded position in which the basket is extended beyond the distal end of the sheath and open. The basket has a first portion and a second portion with two or more legs extending from the first portion to the second portion. The basket further includes an intermediate portion between the first and second portions in which the legs are spirally arranged, substantially parallel, and non-intersecting. The intermediate portion of the basket is displaced radially outward relative to the first and second portions when the basket is in the expanded position. The basket in the expanded position may be used to immobilize and/or capture material within a body.
摘要:
Baskets with atraumatic distal tips allow the capture of material from difficult-to-reach areas of the body, while reducing the risk of tissue damage.
摘要:
A medical retrieval device, and related method, uses a basket formed by one or more legs to retrieve material such as calculi. At least one of the legs has at least an inner and an outer surface. The outer surface is an atraumatic surface such as a curved surface. The atraumatic surface can include one or more radii. The inner surface can be flat such that the leg has a D-shaped cross section. Other shapes are possible for the inner surface including a pointed shape that enhances the basket's stone crushing or breaking ability. The inner surface, whatever its shape, can have a rough surface (e.g., serrated, etched, toothed, etc.) for further enhancing the basket's ability to capture stones and other calculi.
摘要:
A novel instrument for automatic sampling or removal of tissue percutaneously from a patient. In a disclosed embodiment the instrument comprises a housing, a means for excising tissue from a target site within a patient's body extending from the housing, a means for impelling the excising means into a target tissue site in response to an impelling force, and a rotatable handle.
摘要:
Baskets with atraumatic distal tips allow the capture of material from difficult-to-reach areas of the body, while reducing the risk of tissue damage.
摘要:
A medical retrieval device, and related method, uses a basket formed by one or more legs to retrieve material such as calculi. At least one of the legs has at least an inner and a outer surface. The outer surface is an atraumatic surface such as a curved surface. The atraumatic surface can include one or more radii. The inner surface can be flat such that the leg has a D-shaped cross section. Other shapes are possible for the inner surface including a pointed shape that enhances the basket's stone crushing or breaking ability. The inner surfaces, whatever its shape, can have a rough surface (e.g., serrated, etched, toothed, etc.) for further enhancing the basket's ability to capture stones and other calculi.
摘要:
Immobilization and/or retrieval of material from a body can be accomplished, in accordance with the invention, with a device that includes a sheath and a basket. The basket is movable relative to the sheath from a retracted position in which the basket is withdrawn within the sheath and an expanded position in which the basket is extended beyond the distal end of the sheath and open. The basket has a first portion and a second portion with two or more legs extending from the first portion to the second portion. The basket further includes an intermediate portion between the first and second portions in which the legs are spirally arranged, substantially parallel, and non-intersecting. The intermediate portion of the basket is displaced radially outward relative to the first and second portions when the basket is in the expanded position. The basket in the expanded position may be used to immobilize and/or capture material within a body.
摘要:
A surgical extractor, and related method, for removing material (such as calculi and stones) from the body has the ability to capture and release material. The extractor has a sheath, a basket comprised of a plurality of legs that are unattached at a distal end of the basket and joined at a proximal base of the basket, and a plunger at the distal end of the sheath. The legs are movable relative to the sheath to achieve a collapsed position within the sheath and an extended position outside of the sheath in the form of an open basket. The plunger can be moved back and forth between a withdrawn position against the distal end of the sheath with the basket legs in the open position and an extended position away from the distal end of the sheath with the basket legs in a closed position. The distal ends of the legs are farther apart from each other when in the open position than when in the closed position.
摘要:
A medical device for removing an object from a body includes a retrieval basket having a distal section and a proximal section, at least two strands extending through the proximal section of the retrieval basket, and at least three prestressed filaments extending from a distal end of each of the at least two strands through the distal section of the retrieval basket. The filaments are spaced from each other through the entire distal section of the retrieval basket between a proximal end of the filaments and a distal end of the filaments. The filaments also converge at a distal end of the distal section of the retrieval basket, and the filaments are entwined to form each of the at least two strands.
摘要:
A medical retrieval device, and related method, uses a basket formed by one or more legs to retrieve material such as calculi. At least one of the legs has at least an inner and an outer surface. The outer surface is an atraumatic surface such as a curved surface. The atraumatic surface can include one or more radii. The inner surface can be flat such that the leg has a D-shaped cross section. Other shapes are possible for the inner surface including a pointed shape that enhances the basket's stone crushing or breaking ability. The inner surface, whatever its shape, can have a rough surface (e.g., serrated, etched, toothed, etc.) for further enhancing the basket's ability to capture stones and other calculi.