Device for taking a tissue sample

• US 20030114773A1
• Filed: 10/25/2002
• Published: 06/19/2003
• Est. Priority Date: 02/16/2001
• Status: Active Grant

• Current Assignee: Jacques Phillibert Janssens
• Original Assignee: Jacques Phillibert Janssens
• Inventors: Janssens, Jacques Phillibert
• Granted Patent: US 7,008,381 B2
• Time in Patent Office: Days
• US Class Current: 600/564
• CPC Class Codes: A61B 10/0233 Pointed or sharp biopsy instruments
• CPC Class Codes: A61B 10/0266 means for severing sample
• CPC Class Codes: A61B 10/04 Endoscopic instruments
• CPC Class Codes: A61B 2010/0208 Biopsy devices with actuators, e.g. with triggered spring mechanisms
• CPC Class Codes: A61B 2017/00685 Archimedes screw
• CPC Class Codes: A61B 2017/320064 with tissue or sample retaining means

Abstract

Device for taking a tissue sample (34), characterized in that it comprises a spirally shaped tissue-receiving element (2), the outer free extremity of which extents in a direction which is situated in the prolongation of the spiral course of the spirally shaped tissue-receiving element (2), on one hand, and a cutting element (4-38), on the other hand, which can cooperate with the circumference of the spirally shaped tissue-receiving element (2) in order to provide in a cutting function.

Claims

1. Device for taking a tissue sample (34), characterized in that it comprises a spirally shaped tissue-receiving element (2), the outer free extremity of which extents in a direction which is situated in the prolongation of the spiral course of the spirally shaped tissue-receiving element (2), on one hand, and a cutting element (4-38), on the other hand, which can cooperate with the circumference of the spirally shaped tissue-receiving element (2) in order to provide in a cutting function.

2. Device according to claim 1, characterized in that the spirally shaped tissue-receiving element (2) shows one or a combination of two or more of the following features:

that it has a helical course;

that it surrounds a free axial passage space (5);

that the spiral of this element (2), according to a direction perpendicular to the axial direction, has a width which is smaller than one third of the global diameter taken by the spirally shaped tissue-receiving element (2);

that it extends over several turns;

that it shows a sharp point (6) at the free front extremity;

that it shows a sharp point (6) at the free front extremity, which point extends into a direction situated in the prolongation of the spiral course of the spirally shaped tissue-receiving element (2);

that this is formed of a body (7) with a flat cross-section;

that this is formed of a body (7) having a cross-section which tapers towards the outside, and preferably ends in a tip (48);

that this is formed by a body (7) showing lateral surfaces (50-51-52) having an inclination (H) in respect to the plane perpendicular to the axial direction of the device, which is less than 30 degrees.

3. Device according to any of the preceding claims, characterized in that the spirally shaped tissue-receiving element (2) is situated at the end of an oblong, more particularly bar- or wire-shaped portion (3).

4. Device according to any of the preceding claims, characterized in that it comprises at least one cylindrical element (4-35-38-42-43-44) which can surround the spirally shaped tissue-receiving element (2).

5. Device according to claim 4, characterized in that said cutting element is formed by said cylindrical element, and in that the spirally shaped tissue-receiving element (2) and the edge (9) of said cylindrical element (4-38) are mutually cooperating, such that said cutting function is created, preferably as a result of a mutual rotational and/or axial movement.

6. Device according to claim 5, characterized in that the edge (9-39) of said cylindrical element (4-38) is realized as a cutting edge.

7. Device according to claim 6, characterized in that the inclination (A) of said cutting edge or of one or more cutting edge portions (10-11) thereof is opposed to the inclination (B) of the spirally shaped tissue-receiving element (2).

8. Device according to any of the preceding claims, characterized in that the spirally shaped tissue-receiving element (2) is manufactured of a springy material, whereby it is deformable between at least two positions, on one hand, a free position whereby it takes the shape of a spiral, and, on the other hand, a deformed position whereby it is in a condition in which it is flattened, elongated, respectively, to a minor or major extent.

9. Device according to claims 4 and 8, characterized in that the cylindrical element (35-38-42-43-44) is realized as a holder, whereby said tissue-receiving element (2), and possibly an additional spirally shaped element (41), can be slid in, out, respectively, of the cylindrical element (35-38-42-43-44) and whereby the spirally shaped tissue-receiving element (2), and possibly said additional spirally shaped element (41), when it is situated in the cylindrical element (35-38-42-43-44), is in said deformed condition.

10. Device according to any of the preceding claims, characterized in that apart from said spirally shaped tissue-receiving element (2), at least one second spirally shaped element (41) is present which can cooperate with the first-mentioned spirally shaped tissue-receiving element (2).

11. Device according to claim 10, characterized in that the second spirally shaped element (41) is realized as a cutting element which extends around the first spirally shaped element, in other words, the tissue-receiving element (2), such that, during a mutual turning movement, a cutting effect is created.

12. Device according to any of the preceding claims, characterized in that said spirally shaped tissue-receiving element (2), as well as possible additional spirally shaped elements (41), are turnable;

and that it is provided with driving means which comprise a motor (24), with which said cutting element can be driven in a rotating manner around said spirally shaped tissue-receiving element (2).

13. Device according to any of the preceding claims, characterized in that the whole is integrated in, realized as, respectively, a biopsy needle.

14. Device according to any of the claims 1 to 12, characterized in that the whole is integrated in, realized as, respectively, a catheter (35).

17. Device according to any of the preceding claims, characterized in that it further comprises a localization element, more particularly a localization needle (31), whereby said localization element can be shifted axially inside said spirally shaped tissue-receiving element (2).

15. Device for taking a tissue sample (34), characterized in that it consists in the combination of at least one element realized as a catheter (35) and a tissue-receiving element (2) cooperating therewith.

16. Device according to claim 15, characterized in that the tissue-receiving element (2) is at least displaceable in respect to the element realized as a catheter (35);

more particularly between at least two positions, on one hand, a position whereby the tissue-receiving element (2) is situated at least partially outside of the front end of the element realized as a catheter (35), and, on the other hand, a position whereby the tissue-receiving element (2) is situated in a more drawn-in position in respect to the element realized as a catheter (35).