Access trocar and related method thereof
First Claim
1. An apparatus for accessing a subject'"'"'s anatomical space having a surface, the apparatus comprising:
- a first elongated member comprising a proximal end and a distal end, said distal end comprising a sharp end;
a second elongated member comprising a proximal end, a distal end, a first middle portion adjacent to said distal end, and a second middle portion adjacent to said proximal end, said second middle portion of said second elongated member including a helical groove, and said distal end comprising a helical tine;
a third elongated member comprising a longitudinal aperture, a distal end, a middle portion, and a proximal end, wherein said third elongated member at least substantially encloses said first elongated member and said second elongated member; and
a driving mechanism including;
a driver tab, said driver tab adapted to pass through said longitudinal aperture of said third elongated member and engage said helical groove of said second elongated member, wherein;
if said driver tab is moved distally then said tab drives said second elongated member in a distal direction;
if said driver tab is moved proximally then said tab drives said second elongated member in a proximal direction,wherein said helical tine is adapted to;
engage and penetrate said surface, and wherein when said second elongated member is turned, said helical tine lifts said surface in a proximal direction.
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Accused Products
Abstract
System and method that is directed to medical treatments of organs having anatomical spaces, such as (but not limited to) the heart and the pericardial space. Specifically, an apparatus and method is provided for safely accessing anatomical spaces with surfaces to deliver medical devices or media into such spaces, or to remove fluids from such spaces. The methods and apparatus may include a first elongated member with a sharp tip used to penetrate the surface surrounding the anatomical space with a second elongated member with a helical tine used to engage the surface and lift the surface away from the underlying anatomical space. Once the first elongated member has incised the surface, it is removed, and the incision may be used as a point of entry for delivering media or medical devices into the anatomical space, or for carrying out further medical procedures.
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Citations
37 Claims
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1. An apparatus for accessing a subject'"'"'s anatomical space having a surface, the apparatus comprising:
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a first elongated member comprising a proximal end and a distal end, said distal end comprising a sharp end; a second elongated member comprising a proximal end, a distal end, a first middle portion adjacent to said distal end, and a second middle portion adjacent to said proximal end, said second middle portion of said second elongated member including a helical groove, and said distal end comprising a helical tine; a third elongated member comprising a longitudinal aperture, a distal end, a middle portion, and a proximal end, wherein said third elongated member at least substantially encloses said first elongated member and said second elongated member; and a driving mechanism including; a driver tab, said driver tab adapted to pass through said longitudinal aperture of said third elongated member and engage said helical groove of said second elongated member, wherein; if said driver tab is moved distally then said tab drives said second elongated member in a distal direction; if said driver tab is moved proximally then said tab drives said second elongated member in a proximal direction, wherein said helical tine is adapted to; engage and penetrate said surface, and wherein when said second elongated member is turned, said helical tine lifts said surface in a proximal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification