Biopsy device
First Claim
Patent Images
1. A biopsy device suitable for use with a magnetic resonance imaging machine, said device comprising an elongated needle for receiving tissue therein, the needle comprising:
- (a) a housing; and
(b) a needle assembly extending distally from the housing, the needle assembly comprising;
(i) a distal needle segment sized and shaped to be inserted in a patient, the distal needle segment having a proximal end and comprising a lateral tissue receiving port disposed distally of the proximal end, the lateral tissue receiving port positionable within the patient, the distal needle segment formed of a non-metallic, first material that does not interfere with MRI imaging of a portion of the distal needle segment associated with the tissue receiving port;
(ii) a tissue piercing associated with a distal end of the distal needle segment, wherein the lateral tissue receiving port of the distal needle segment is disposed proximal of the piercing tip; and
(iii) a proximal needle segment disposed proximally of the tissue receiving port, the proximal needle segment formed at least in part of a metallic, second material different from said first material;
wherein the proximal needle segment and the distal needle segment provide at least one substantially continuous lumen, wherein the proximal needle segment and the distal needle segment are longitudinally joined along a common axis; and
wherein a portion of the proximal needle segment extends distally of the proximal end of the distal needle segment.
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Accused Products
Abstract
An improved needle assembly is provided. A distal portion of the needle can be formed of a first material which does not interfere with MRI imaging of a tissue receiving port disposed in the distal needle portion. A proximal needle portion can be formed of a second, different material. The proximal needle portion can provide strength and stiffness.
114 Citations
18 Claims
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1. A biopsy device suitable for use with a magnetic resonance imaging machine, said device comprising an elongated needle for receiving tissue therein, the needle comprising:
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(a) a housing; and (b) a needle assembly extending distally from the housing, the needle assembly comprising; (i) a distal needle segment sized and shaped to be inserted in a patient, the distal needle segment having a proximal end and comprising a lateral tissue receiving port disposed distally of the proximal end, the lateral tissue receiving port positionable within the patient, the distal needle segment formed of a non-metallic, first material that does not interfere with MRI imaging of a portion of the distal needle segment associated with the tissue receiving port; (ii) a tissue piercing associated with a distal end of the distal needle segment, wherein the lateral tissue receiving port of the distal needle segment is disposed proximal of the piercing tip; and (iii) a proximal needle segment disposed proximally of the tissue receiving port, the proximal needle segment formed at least in part of a metallic, second material different from said first material; wherein the proximal needle segment and the distal needle segment provide at least one substantially continuous lumen, wherein the proximal needle segment and the distal needle segment are longitudinally joined along a common axis; and wherein a portion of the proximal needle segment extends distally of the proximal end of the distal needle segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A biopsy device suitable for use with a magnetic resonance imaging machine, said device comprising:
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(a) a housing; and (b) a needle assembly extending distally from the housing, the needle assembly comprising; (i) a distal needle segment sized and shaped to be inserted in a patient and comprising a lateral tissue receiving port communicating with a distal cutter lumen portion, the lateral tissue receiving port positionable within the patient, and the distal needle segment formed of a first non-metallic material; (ii) a piercing tip associated with a distal end of the distal needle segment, wherein the lateral tissue receiving port of the distal needle segment is disposed proximal of the piercing tip; and (iii) a proximal needle segment formed at least in part of a metal, the proximal needle segment comprising a proximal cutter lumen portion, and wherein said metal is spaced proximally at least about 0.5 inch from a proximal edge of said tissue receiving port; wherein the distal needle segment is coupled with the proximal needle segment, wherein the distal cutter lumen portion is longitudinally coupled with the proximal cutter lumen portion along a common axis. - View Dependent Claims (12, 13)
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14. A biopsy device suitable for use with a magnetic resonance imaging machine, said device comprising an elongated needle for receiving tissue therethrough, the needle comprising:
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(a) a housing; and (b) a needle assembly extending distally from the housing, the needle assembly comprising; (i) a distal needle segment formed of a non-metallic material and having a lateral tissue receiving port communicating with a distal cutter lumen segment;
wherein the distal needle segment has a proximal end;(ii) a metallic proximal needle segment coupled with the distal needle segment and disposed proximally of the tissue receiving port, wherein the metallic proximal needle segment provides a proximal cutter lumen segment communicating with the distal cutter lumen segment, wherein the proximal needle segment has a distal end and a proximal end; and (iii) a mounting component coupled to the metallic proximal needle segment and located substantially near the proximal end of the metallic proximal needle segment, wherein the mounting component couples the needle assembly to the housing; wherein the distal end of the proximal needle segment is positioned distally of the proximal end of the distal needle segment. - View Dependent Claims (15)
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16. A biopsy device suitable for use with a magnetic resonance imaging machine, the device comprising:
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a handpiece; an outer needle extending from the handpiece, the needle comprising a proximal needle segment extending outwardly from the handpiece, and a distal needle segment supported by the proximal needle segment and spaced from the handpiece by the proximal needle segment, the distal needle segment comprising a lateral tissue receiving opening; an inner cutter having a distal end adapted to translate within the outer needle to sever tissue received in the lateral tissue receiving opening; a tissue piercing tip associated with a distal end of the distal needle segment; wherein the distal needle segment is formed of a non-metallic, first material suitable for use with MRI imaging of a portion of the distal needle segment associated with the tissue receiving port; and wherein the proximal needle segment is formed at least in part of a metallic, second material different from said first material. - View Dependent Claims (17, 18)
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Specification