Core biopsy arrangement
First Claim
1. Core biopsy arrangement fortaking a tissue sample from a human or animal tissue, comprising a needle holder member provided with a tissue sampling needle configured to collect a core biopsy sample;
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Accused Products
Abstract
A core biopsy arrangement for taking a tissue sample from a human or animal tissue, preferably from a tumour or a suspected tumour, includes a needle holder member provided with a tissue sampling needle, a longitudinal movement element adapted to apply a longitudinal movement to the needle, wherein the movement of the needle is a reciprocating movement having a stroke length L, wherein the forward movement is faster than the retracting movement, and wherein the reciprocating movement is initiated when the distal end of the needle is subjected to a force in the longitudinal direction.
25 Citations
21 Claims
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1. Core biopsy arrangement for
taking a tissue sample from a human or animal tissue, comprising a needle holder member provided with a tissue sampling needle configured to collect a core biopsy sample; - and
a means for longitudinal movement configured to apply a longitudinal movement to the needle, the means for longitudinal movement being configured to have a forward movement including a primary movement followed by a secondary movement during a final part of the forward movement, wherein the longitudinal movement means is not attached to the needle such that during the primary movement the longitudinal movement means is not in contact with the needle and the longitudinal movement means contacts the needle during the secondary movement to apply forward movement to the needle, wherein the longitudinal movement of the needle is a continuing reciprocating movement comprising alternating forward movements and retracting movements while entering the tissue, the longitudinal movement having a variable stroke length, a forward movement of the needle is faster than a retracting movement of the needle, and the reciprocating movement of the needle is initiated when a distal end of the needle is subjected to a force in a longitudinal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19)
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18. A core biopsy arrangement for taking a tissue sample from a human or animal tissue, comprising:
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a needle holder member provided with a tissue sampling needle configured to collect a core biopsy sample; and a longitudinal movement device including a plunger and cylinder configured to apply a longitudinal movement to the needle, the movement device being configured to have a forward movement including a primary movement followed by a secondary movement during a final part of the forward movement, wherein the movement device is not attached to the needle such that during the primary movement the movement device is not in contact with the needle and the movement device contacts the needle during the secondary movement to apply forward movement to the needle, wherein the longitudinal movement of the needle os a continuing reciprocating movement comprising alternating forward movements and retracting movements while entering the tissue, the longitudinal movement having a variable stroke length, a forward movement of the needle is faster than a retracting movement of the needle, and the reciprocating movement of the needle is initiated when a distal end of the needle is subjected to a force in a longitudinal direction. - View Dependent Claims (20)
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21. A core biopsy arrangement for
taking a tissue sample from a human or animal tissue, comprising: - a needle holder member provided with a tissue sampling needle configured to collect a core biopsy sample; and
a means for longitudinal movement configured to apply a longitudinal movement to the needle, the means for longitudinal movement being configured to have a forward movement including a primary movement followed by a secondary movement during a final part of the forward movement, wherein the longitudinal movement means is not attached to the needle such that during the primary movement the longitudinal movement means is not in contact with the needle and the longitudinal movement means contacts the needle during the secondary movement to apply forward movement to the needle, wherein the longitudinal movement of the needle is a continuing reciprocating movement comprising alternating forward movements and retracting movements while entering the tissue, the longitudinal movement having a variable stroke length, a forward movement of the needle is faster than a retracting movement of the needle, and the reciprocating movement of the needle is initiated when a distal end of the needle is subjected to a force in a longitudinal direction, and the stroke length is linearly dependent of the force in the longitudinal and a proximal direction of the needle such that when a lower force is applied the stroke length is minimal and when a higher force is applied the stroke length is maximal.
- a needle holder member provided with a tissue sampling needle configured to collect a core biopsy sample; and
Specification