Protective cover assembly for a needle assembly
Inventors
Vaillancourt, Michael J. • Athwal, Navdeep
Assignees
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Publication Number
US-8905944-B2
Publication Date
2014-12-09
Expiration Date
Abstract
In one embodiment, the protective cover assembly has a hub that is to be mounted on a needle assembly, such as a biopsy needle assembly, a cap that is movable off the hub to move over a cannula or stylet of the needle assembly and a pair of rolls of film within the cap. The rolls of film are secured at one end to the hub to unwind over the cannula. Pressing rolls or springs press the longitudinal edges of the film strips together in sealed relation to encase the cannula while the cap receives the end of the cannula or stylet in sealed relation. In a second embodiment, the cap is integrated with a hub of a needle assembly having a cannula extending from the hub.
Core Innovation
Across the independent claims, the inventive coverage centers on a hub-mounted protective cover with a cap movable from a first to a second spaced position. The cap has a bore for passage of a cannula therethrough, and in some claims the cover is described as mounted on a hub with a hollow tube extending from the hub.
A pair of rolls of film are rotatably mounted within the cap, and each roll has a free end secured to the hub. Movement of the cap from the first position to the second position causes each roll to unwind and position a strip of film from each roll in facing relation to the other, or on opposite sides of the cannula.
In some claims, the invention is described in combination with a biopsy needle having a housing, a hollow cannula extending from the housing, and a stylet extending within the cannula, the cannula and stylet being movable relative to each other. In some claims, pressing means are mounted within the cap for pressing each strip of film to the other strip of film, and the film strips are described as forming a sealed relation around the cannula.
Claims Coverage
The provided material includes four independent claims. Across these claims, the independent inventive features focus on a hub-based protective cover with a movable cap that shifts between a first and a second position, and on two rotatable film rolls that unwind facing film strips to encase an end of a cannula or cannula-and-stylet arrangement, with optional pressing and blocking or sealing functions.
Hub-mounted protective cover with movable cap and dual facing film strips
A protective cover assembly comprising a hub; a hollow tube extending from said hub; a cap mounted on said hub and disposed over said tube, said cap having a bore for passage of said tube therethrough and being movable relative to said tube from a first position mounted on said hub to a second position spaced from said hub and said tube; and a pair of rolls of film rotatably mounted within said cap, each roll of film having a free end secured to said hub whereby each roll unwinds in response to movement of said cap from said first position to said second position to position a strip of film from each roll in facing relation to the other strip of film.
Movable cap for cannula with unwinding facing film strips and pressing
A protective cover assembly comprising a cap having a bore for passage of a cannula therethrough and being movable relative to the cannula from a first position mounted on the cannula to a second position at an end of the cannula; a pair of rolls of film rotatably mounted within said cap for unwinding in response to movement of said cap from said first position to said second position to position a strip of film from each roll in facing relation to the other; and pressing means mounted within said cap for pressing each said strip of film to the other said strip of film.
Biopsy needle combination with hub-mounted protective film-encasing cover
In combination a biopsy needle having a housing, a hollow cannula extending from said housing and a stylet extending within said cannula, said cannula and said stylet being movable relative to each other to position said stylet between an extended position outwardly of said cannula to contact tissue and a retracted position inwardly of said cannula to retain a specimen of the tissue therebetween; and a protective cover assembly for said biopsy needle having a hub mounted on said housing, a hollow tube extending from said hub with said cannula and said stylet extending longitudinally therethrough, a cap mounted on said hub and having a bore for passage of said cannula and said stylet therethrough and being movable relative to said hub from a first position on said hub to a second position spaced from said hub with an end of said cannula disposed in said cap in spaced relation to said bore, and a pair of rolls of film rotatably mounted within said cap, each roll of film having a free end secured to said hub whereby each roll unwinds in response to movement of said cap from said first position to said second position to position a strip of film from each said roll to opposite sides of said cannula.
Needle assembly with removable cap and dual film strips positioned on opposite sides of the cannula
In combination a needle assembly having a hub and a cannula extending from said hub; and a protective cover assembly for said needle assembly having a cap removably mounted on said hub and having a bore for passage of said cannula therethrough and being movable relative to said hub from a first position on said hub to a second position with an end of said cannula disposed in said cap in spaced relation to said bore, and a pair of rolls of film rotatably mounted within said cap, each roll of film having a free end secured to said hub whereby each roll unwinds in response to movement of said cap from said first position to said second position to position a strip of film from each said roll of film to opposite sides of said cannula.
Across the independent claims, the inventive coverage centers on a hub-mounted protective cover with a cap movable from a first to a second spaced position, two rotatably mounted film rolls in the cap with free ends secured to the hub that unwind to place facing film strips on opposite sides of the cannula, and, in some claims, pressing means to press the film strips together to form a sealed relation around the cannula.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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