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US 2003/0171766 A1Published application
Biopsy device
OwnerPaul Laurence Cerviinventor
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OwnerPaul Laurence Cerviinventor
Estimating the term…
A soft tissue biopsy device which results the recovery of a biopsy of tissue which is a flat section in shape, particularly suitable for lymph node biopsy, and comprising twin opposing primary blades preferably aligned in parallel planes, to cut the upper and lower surfaces of the biopsy. A detachment blade is provided to cut the side walls and distal ends of the biopsy. In a preferred embodiment each primary blade has a sharpened tip set at an angle with a sharpened point to assist tissue penetration. The detachment blade, preferably has inwardly curving flexible sharpened tips at its distal end, and is attached to the handle at its proximal end by a slider such that when in a retracted position, the detachment blade is retracted from the tip of the twin blades; and when in an advanced position, the tip of the detachment blade abuts the tip of the twin blades.
A biopsy device comprising a tissue sampler, the tissue sampler comprising a pair of oppositely disposed blades substantially parallel to one another, and substantially planar, the blades defining two sides of a space to receive tissue to be sampled and, at the tip of the device, having front edges to cut the sampled tissue as the device is inserted into the tissue, the tissue sampler further comprising cutting means to cut the sample from the tissue after the device has been inserted.
A biopsy device as claimed in any preceding claim, wherein the pair of blades comprises first and second blades, movable with respect to one another.
A biopsy device as claimed in any preceding claim, further comprising at least one side cutting blade for cutting a side of the sampled tissue adjacent a side defined by one of said oppositely disposed blades, the side cutting blade being attached to one of said oppositely disposed blades.
A biopsy device as claimed in any preceding claim, wherein one of said oppositely disposed blades has a raised portion near the tip of the device.
A biopsy device as claimed in any preceding claim, wherein the width of at least one of the oppositely disposed blades in a plane defined by the blade tapers towards the tip of the device.
A biopsy device comprising twin substantially parallel blades which, when advanced through tissue, cut a thin flat section of tissue biopsy between them, the device further comprising a detachment blade configured to be advanced slidably along the parallel blades to cut away at least a distal end of the biopsy sample.
A biopsy device comprising a tissue sampler, the tissue sampler comprising a pair of oppositely disposed blades substantially parallel to one another and substantially planar, the blades defining two sides of a space to receive tissue to be sampled and, at the tip of the device, having front edges to cut the sampled tissue as the device is inserted into the tissue, the pair of blades comprising first and second blades, movable with respect to one another.
A biopsy device as claimed in claim 44 or 45 wherein the cutting means is configured to cut along at least one open side of the tissue receiving space.
A biopsy device comprising twin substantially parallel blades which, when advanced through tissue planes, cut a thin flat section of tissue biopsy between them, the device being configured for separate advancement of the twin blades.
A method of obtaining a biopsy sample comprising:
A method of obtaining a biopsy sample using a biopsy device comprising first and second substantially flat, oppositely disposed blades, the method comprising first using the first blade to cut a first side of the biopsy from the tissue to be sampled and then using the second blade to cut a second, substantially opposite side of the biopsy.
Dependencies are inferred from the claim text.