Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-8688198-B2
Publication Date
2014-04-01
Expiration Date
Abstract
A site marker delivery system is provided. The site mark delivery system includes an outer cannula having an open distal end. The outer cannula defines an inner lumen in which an inner cannula may be received. A marker is also positioned within the inner lumen of the outer cannula. The inner cannula further includes a trigger mechanism that when actuated injects the marker through the open distal end of the outer cannula into a biopsy site.
Core Innovation
The disclosure relates to a biopsy site marker delivery system for delivery of at least one marker after a tissue cutting device is removed, with the system configured for non-surgical/less invasive placement. The system includes an outer cannula having an open distal end defining an inner lumen, and the marker is moveably positionable within the inner lumen at a first position.
An inner cannula is selectively positionable within the inner lumen of the outer cannula and includes a distal end and a proximal end. An actuation mechanism is connected to the inner cannula and is operable to selectively move the inner cannula into temporary engagement with the marker while the marker is positioned at the first position, thereby moving the marker from the first position through the open distal end of the outer cannula to a second position external of the inner lumen.
A grommet is slidably attached to the outer cannula, wherein the inner cannula is moveable axially relative to the grommet and the outer cannula is moveably axially relative to the grommet through application of an axial force to the outer cannula. Optional features described include a port for injecting hemostatic fluids, a one-way distal flap to prevent marker backflow, depth-indicating markings, a collapsible elastic sheath to protect the cannula from contamination, and use with stereotactic biopsy adapter assemblies or introducer systems.
Claims Coverage
The provided material contains one independent claim (clm-00001). The claim coverage centers on how a marker is moved from an internal first position to an external second position using an outer cannula, an inner cannula, and an actuation mechanism, with relative axial movement enabled by a slidably attached grommet.
Outer cannula with open distal end and moveably positionable marker
An outer cannula having an open distal end and a proximal end, the outer cannula defining an inner lumen for receiving at least one marker moveably positionable within the inner lumen at a first position.
Inner cannula selectively positionable within outer cannula
An inner cannula selectively positionable within the inner lumen of the outer cannula, the inner cannula including a distal end and a proximal end.
Actuation mechanism to move marker to an external position
An actuation mechanism connected to the inner cannula for selectively moving the inner cannula into temporary engagement with the marker while the marker is positioned at the first position within the inner lumen, the actuation mechanism operable for moving the marker from the first position through the open distal end of the outer cannula to a second position external of the inner lumen.
Slidably attached grommet enabling relative axial movement via axial force
A grommet slidably attached to the outer cannula, wherein the inner cannula is moveable axially relative to the grommet and the outer cannula is moveable axially relative to the grommet through application of an axial force to the outer cannula.
The independent claim defines a marker delivery system where an outer cannula holds a marker at an internal first position, an inner cannula is selectively advanced into temporary engagement with the marker by an actuation mechanism, and the marker is moved out through the outer cannula’s open distal end to an external second position, with axial motion relationships managed by a slidably attached grommet.
Stated Advantages
Non-surgical/less invasive placement of a biopsy site marker after a tissue cutting device is removed.
Documented Applications
Non-surgical/less invasive placement of a biopsy site marker after a tissue cutting device is removed.
Use with stereotactic biopsy adapter assemblies, including positioning/confirmation prior to marker injection.
Alternative use with introducer systems including positioning/confirmation prior to marker injection.
Interested in licensing this patent?