Biopsy device incorporating an adjustable probe sleeve
First Claim
1. A device for selectively blocking a proximal portion of a side aperture in a needle of a core biopsy instrument having a cutter that translates across the side aperture to sever prolapsed tissue, wherein the needle of the core biopsy instrument comprises a longitudinal axis, the device comprising:
- a half cylindrical tube portion having an inner contour corresponding to both the side aperture and a proximate upper portion of the needle of the core biopsy instrument, wherein a distal portion of the half cylindrical tube portion comprises an inner recessed contour sized to avoid contact with the cutter of the core biopsy instrument, wherein the half cylindrical tube portion comprises a proximal end and a distal end, wherein the half cylindrical tube portion terminates at the distal end in a beveled edge;
a first gripping flange attached to the half cylindrical tube portion positioned to resiliently lock to an underside of a proximate lower portion of the needle, wherein the first gripping flange comprises a proximal edge and a distal edge, wherein the first gripping flange extends between the proximal edge and the distal edge;
a second gripping flange attached to the half cylindrical tube portion positioned to resiliently lock to an underside of a proximate lower portion of the needle, wherein the second gripping flange comprises a proximal edge and a distal edge, wherein the second gripping flange extends between the proximal edge and the distal edge, wherein the second gripping flange is longitudinally staggered relative to the first gripping flange such that the proximal edge of the second gripping flange is positioned distally relative to the distal edge of the first gripping flange;
a finger flange attached to a proximal portion of the half cylindrical tube portion sized for manual longitudinal positioning of the half cylindrical tube portion relative to the side aperture; and
a pair of flanking horizontal tabs attached to the half cylindrical tube portion positioned proximally of the finger flange adjacent to the proximal end of the half cylindrical tube portion, wherein the pair of flanking horizontal tabs are fixed in a substantially horizontal plane;
wherein the half cylindrical tube portion is configured to slidably translate along the longitudinal axis of the needle of the core biopsy instrument thereby blocking at least a proximal portion of the side aperture.
3 Assignments
0 Petitions
Accused Products
Abstract
Devices and methods for varying the size of a tissue sample in a biopsy device are disclosed. The biopsy device includes a needle with a tissue aperture and an inner cutter which translates within the needle. The inner cutter may be controlled to selectively block the aperture thereby varying the sample size. A half cylindrical sleeve may be resiliently attached to the exterior of the needle in order to block the aperture. The sleeve includes gripping flanges on its bottom surface, and a beveled distal tip configured to avoid damage from the inner cutter. The distal tip may include an inner metallic guide or may be heightened to avoid contact with the cutter.
444 Citations
16 Claims
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1. A device for selectively blocking a proximal portion of a side aperture in a needle of a core biopsy instrument having a cutter that translates across the side aperture to sever prolapsed tissue, wherein the needle of the core biopsy instrument comprises a longitudinal axis, the device comprising:
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a half cylindrical tube portion having an inner contour corresponding to both the side aperture and a proximate upper portion of the needle of the core biopsy instrument, wherein a distal portion of the half cylindrical tube portion comprises an inner recessed contour sized to avoid contact with the cutter of the core biopsy instrument, wherein the half cylindrical tube portion comprises a proximal end and a distal end, wherein the half cylindrical tube portion terminates at the distal end in a beveled edge; a first gripping flange attached to the half cylindrical tube portion positioned to resiliently lock to an underside of a proximate lower portion of the needle, wherein the first gripping flange comprises a proximal edge and a distal edge, wherein the first gripping flange extends between the proximal edge and the distal edge; a second gripping flange attached to the half cylindrical tube portion positioned to resiliently lock to an underside of a proximate lower portion of the needle, wherein the second gripping flange comprises a proximal edge and a distal edge, wherein the second gripping flange extends between the proximal edge and the distal edge, wherein the second gripping flange is longitudinally staggered relative to the first gripping flange such that the proximal edge of the second gripping flange is positioned distally relative to the distal edge of the first gripping flange; a finger flange attached to a proximal portion of the half cylindrical tube portion sized for manual longitudinal positioning of the half cylindrical tube portion relative to the side aperture; and a pair of flanking horizontal tabs attached to the half cylindrical tube portion positioned proximally of the finger flange adjacent to the proximal end of the half cylindrical tube portion, wherein the pair of flanking horizontal tabs are fixed in a substantially horizontal plane; wherein the half cylindrical tube portion is configured to slidably translate along the longitudinal axis of the needle of the core biopsy instrument thereby blocking at least a proximal portion of the side aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device for selectively blocking a proximal portion of a side aperture in a needle of a core biopsy instrument having a cutter that translates across the side aperture to sever prolapsed tissue, comprising:
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a transparent half cylindrical tube portion having an inner contour corresponding to both the side aperture and a proximate upper portion of the needle of the core biopsy instrument, the inner contour including a distal portion operatively configured to avoid damage from the cutter of the core biopsy instrument, wherein the transparent half cylindrical tube portion comprises an interior cavity, a proximal end and a distal end, wherein the transparent half cylindrical tube portion further comprises a first lower lateral edge and a second lower lateral edge; a first gripping flange extending unsupported from the first lower lateral edge of the half cylindrical tube portion and positioned to resiliently lock to an underside of a proximate lower portion of the needle, wherein the first gripping flange distally terminates at a distal point and proximally terminates at a proximal point; a second gripping flange extending unsupported from the second lower lateral edge of the half cylindrical tube portion and positioned to resiliently lock to an underside of a proximate lower portion of the needle, wherein the second gripping flange distally terminates at a distal point and proximally terminates at a proximal point, wherein the distal point of the second gripping flange is positioned proximally relative to the proximal point of the first gripping flange; and a finger flange attached to a proximal portion of the half cylindrical tube portion sized for manual longitudinal positioning of the half cylindrical tube portion relative to the side aperture; wherein the device is configured to remain attached to the needle of the core biopsy instrument while sliding in a longitudinal direction along the needle such that the device blocks at least a portion of the side aperture. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A device for selectively blocking a proximal portion of a side aperture in a needle of a core biopsy instrument having a cutter that translates across the side aperture to sever prolapsed tissue, comprising:
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a half cylindrical tube portion having an inner contour corresponding to both the side aperture and a proximate upper portion of the needle of the core biopsy instrument, wherein a distal portion of the half cylindrical tube portion comprises an inner metallic guide resistant to damage from the cutter of the core biopsy instrument, wherein a vertical portion of the inner contour is defined by a small vertical inner radius and a large vertical inner radius, wherein the small vertical inner radius is less than the large vertical inner radius, wherein the vertical portion of the contour along a first length of the half cylindrical tube portion is defined by the small vertical inner radius, wherein the vertical portion of the contour along a second length of the half cylindrical tube portion is defined by the large vertical inner radius, wherein the first length is greater than the second length, wherein the half cylindrical tube portion comprises a proximal end and a distal end, wherein the half cylindrical tube portion terminates at the distal end in an outer ramped surface, wherein the transparent half cylindrical tube portion further comprises a lower lateral edge; a gripping flange extending unsupported from the lower lateral edge of the half cylindrical tube portion and positioned to resiliently lock to an underside of a proximate lower portion of the needle; a first horizontal tab attached to the half cylindrical tube portion, wherein the first horizontal tab is fixed in a substantially horizontal plane; a second horizontal tab attached to the half cylindrical tube portion, wherein the second horizontal tab is fixed in the substantially horizontal plane of the first horizontal tab; and a finger flange attached to a proximal portion of the half cylindrical tube portion sized for manual longitudinal positioning of the half cylindrical tube portion relative to the side aperture. - View Dependent Claims (16)
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Specification