Device for transcutaneous biopsy

• US 7,014,614 B2
• Filed: 07/20/2001
• Issued: 03/21/2006
• Est. Priority Date: 07/20/2000
• Status: Expired due to Fees

• Current Assignee: H.S. Hospital Service Spa
• Original Assignee: H.S. Hospital Service Spa
• Inventors: Casula, Gianfranco
• Primary Examiner(s): Hindenburg, Max F.
• Assistant Examiner(s): Szmal, Brian
• Application Number:
  US10/333,488
• Publication Number:
  US 20030171694A1
• Time in Patent Office: 1,705 Days
• Field of Search: 600/566, 600/567, 600/564, 600/583, 606/167
• US Class Current: 600/567
• CPC Class Codes: A61B 10/025 for taking bone, bone marrow or cartilage samples
• CPC Class Codes: A61B 10/0266 means for severing sample

Abstract

Device for transcutaneous biopsy comprising needle means provided with handle at a proximal end thereof and provided with cutting edge at a distal end thereof, mandrel means which may be inserted into the needle means, the needle means comprising a substantially cylindrical hollow body having a substantially constant inner diameter; the device comprises blocking means suitable for blocking a sample of tissue inside the needle means, the blocking means being slidably coupled inside the needle means.

Claims

1. A device for transcutaneous biopsy of rigid tissues comprising:

(a) needle means comprising a substantially cylindrical first hollow body comprising a first hollow body distal end, a cutting edge at said first hollow body distal end, and a substantially constant inner diameter; and

(b) blocking means slidably coupled inside said needle means for blocking a sample of tissue inside said needle means, said blocking means comprising a substantially cylindrical second hollow body slidably coupled inside said needle means and having a second hollow body distal end, said second hollow body ending at said second hollow body distal end with at least one elastic lamina means comprising a first lamina and a second lamina facing said first lamina and having a beginning;

wherein said second hollow body comprises a longitudinal slot extending from a proximal end of said second hollow body up to about the beginning of said second lamina.

2. Device according to claim 1, wherein said at least one elastic lamina means is shaped as a sector of a cylindrical surface.

3. Device according to claim 1, further comprising pusher means suitable for pushing said second lamina radially towards said first lamina.

4. Device according to claim 3, wherein said pusher means is provided with a wedge-shaped end for engaging into said slot.

5. Device according to claim 1, wherein said first hollow body ends at the first hollow body distal end with a tip having an oblique shape.

6. Device according to claim 1, further comprising mandrel means insertable into said second hollow body.

7. Device according to claim 1, further comprising sheath means slidable on said needle means for covering said slot.

8. A device for transcutaneous biopsy of rigid tissues comprising:

(a) needle means comprising a substantially cylindrical first hollow body comprising a first hollow body distal end, a mouth and a cutting edge at said distal end, a substantially constant inner diameter, and at least one bulge extending toward an inside portion of said first hollow body; and

(b) blocking means slidably coupled inside said needle means for blocking a sample of tissue inside said needle means;

wherein said at least one bulge comprises a pair of mutually facing bulges.

9. Device according to claim 8, wherein said first hollow body ends at the first hollow body distal end with a tip having an oblique shape.

10. A device for transcutaneous biopsy of rigid tissues comprising:

(a) needle means comprising a distal end, a mouth and a cutting edge at said distal end, and a substantially cylindrical hollow body having a substantially constant inner diameter and at least one bulge extending toward an inside portion of said cylindrical hollow body; and

(b) blocking means slidably coupled inside said needle means for blocking a sample of tissue inside said needle means, said blocking means comprising at least one elastic lamina means comprising a respective slot for coupling with said at least one bulge.

11. Device according to claim 10, wherein said at least one elastic lamina means comprises a pair of mutually-facing elastic laminae, each of said elastic laminae comprising a respective slot for coupling with one of said at least one bulge.

12. A device for transcutaneous biopsy of rigid tissues comprising:

(a) needle means comprising a substantially cylindrical first hollow body omprising a distal end, a mouth and a cutting edge at said distal end, a substantially constant inner diameter, and at least one bulge extending toward an inside portion of said first hollow body;

(b) blocking means comprising a substantially cylindrical second hollow body having an inner diameter and being slidably coupled inside said needle means for blocking a sample of tissue inside said needle means;

wherein the distal end of said first hollow body ends with a narrowed portion dimensioned so that said mouth has a diameter substantially corresponding to the inner diameter of said second hollow body.

13. A device for transcutaneous biopsy of rigid tissues comprising:

(a) needle means comprising a distal end, a cutting edge at said distal end, and a substantially cylindrical hollow body having a substantially constant inner diameter; and

(b) blocking means slidably coupled inside said needle means for blocking a sample of tissue inside said needle means, said blocking means comprising at least one elastic lamina means;

wherein said at least one elastic lamina means is provided with a bulge and said substantially cylindrical hollow body comprises a respective slot for coupling with said bulge;

said blocking means being slidable inside said needle means between a first position wherein said bulge is inserted into said slot and a second position wherein said bulge is completely inside the needle means.