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1. WO2016118026 - PROSTATE BIOPSY NEEDLE

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

Claims

1. Prostate biopsy needle comprising a cannula (1), a pointed stylet (2), which is mounted slidably in the cannula, handles (3 a, 3b) for the biopsy gun, which are located on the back side of the needle, has the characteristic that, an inner surface (4) of the cannula (1) and / or an outer surface (5) of the cannula (1) and / or a surface of the stylet (2) is coated with at least one active layer (6) comprising a biologically active agent, wherein the active layer (6) preferably forms a biodegradable structure enabling controlled release of the biologically active agent.

2. The needle according to the claim 1, wherein the inner surface (4) of the cannula (1) and / or the outer surface (5) of the cannula (1) and / or the surface of the stylet (2) form an extended surface (9), preferable grooved and / or rough and / or porous surface (9).

3. The needle according to the claim 2, wherein extended surface (9) forms pits with depth ranged from 0.001 mm to 0.1 mm, preferably from 0.01 mm to 0.06 mm.

4. The needle according to any of the claims 1-3, in which the part of inner surface (4) of the cannula (1) and / or the part of outer surface (5) of cannula (1) is coated with the active layer (6), wherein the part is an area ranged from 0.1 cm to 10 cm in length, preferably from 4 cm to 8 cm, preferably extended from a tip of the cannula (1) and / or the front part of the surface of stylet (2) is coated with the active layer (6), wherein the part is the area ranged from 0.1 cm to 10 cm in length, preferably from 4 cm to 8 cm, preferably extended from the tip of stylet (2).

5. The needle according to any of the claims 1-4, in which the active layer (6) is applied on an binder layer (7) wherein the inner surface (4) of the cannula (1) and / or the outer surface (5) of the cannula (1) and / or the surface of stylet (2) is coated with the binder layer (7).

6. The needle according to any of the claims 1-5, in which the active layer (6) contains binder agent

7. The needle according to any of the claims 1-6, in which the surface of active layer (6) is coated with the protective layer (8) enabling stable release of the biologically active agent, preferably in the form of polymer layer.

8. The needle according to the claim 7, wherein the protective layer (8) has a form of a fine mesh with the cells size from 1 μιη to 500 μm, preferably 10 μm to 100 μm.

9. The needle according to any of the claims 1-7, wherein the biologically active agent of the active layer (6) is an antibacterial substance and/or an anti-inflammatory substance and/or an analgesic substance and/or an anesthetic substance and/or the antihemorrhagic substance.

10. The needle according to the claim 9, in which the antibacterial substance and / or the anti-inflammatory substance is an antibiotic and / or the chemotherapeutic agent and / or zinc ions and / or silver ions.

11. Prostate biopsy needle comprising a cannula (1), a pointed stylet (2), which is slidably located into the cannula, handles (3a, 3b) for the biopsy gun, which are located on the back side of the needle, has the characteristic that, longitudinal pass-through-hole channel (10) in the wall of cannula (1) is formed, the channel has closed profile in cross-section view, and the channel (10) extends through the entire length of the wall of cannula (1) or the part the length thereof.

12. The needle according to the claim 11, in which the channel (10) is circular-shaped in cross-section with the diameter of 0.1 mm to 2.0 mm, preferably from 0.5 mm to 0.7 mm.

13. The needle according to any of the claims 11-12, in which the channel (10) protrudes over the outer surface (5) of the cannula (1), preferably protrudes over the area of 130 mm to 155 mm from the tip of cannula (1).