Device for the injection of drugs into microvessels

• US 20070021653A1
• Filed: 06/26/2006
• Published: 01/25/2007
• Est. Priority Date: 06/27/2005
• Status: Abandoned Application

• Current Assignee: Dieter Mann
• Original Assignee: Dieter Mann
• Inventors: Hattenbach, Lars-Olof, Hilgenberg, Ingo
• Application Number:
  US11/474,776
• Publication Number:
  US 20070021653A1
• Time in Patent Office: Days
• US Class Current: 600/103
• CPC Class Codes: A61F 9/0017 implantable in, or in contact with, the eye, e.g. ocular inserts
• CPC Class Codes: A61M 2025/0042 Microcatheters, cannula or the like having outside diameters around 1 mm or less
• CPC Class Codes: A61M 25/00 Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00
• CPC Class Codes: A61M 25/001 Forming the tip of a catheter, e.g. bevelling process, join or taper

Abstract

A catheter and a catheter system for the injection of drugs in a microvessel, in particular in a retinal microvessel is provided, wherein the catheter comprises a single piece tubing (1) made of quartz glass, the tubing having an end portion (2) having a sharp tip (3), the end portion tapering towards said sharp tip (3). The catheter is mounted to a sleeve (5) which is mounted to the tip (6) of an endoscope.

Claims

1. A catheter for the injection of drugs in a microvessel, in particular in a retinal microvessel, the catheter comprising:

a single piece tubing made of quartz glass, the tubing having an end portion comprising a sharp tip.

2. The catheter of claim 1, wherein said tubing is flexible.

3. The catheter of claim 1, wherein said end portion is substantially rigid.

4. The catheter of claim 1, wherein said end portion tapers towards said sharp tip.

5. The catheter of claim 1, wherein the outer diameter of said sharp tip is in the range of approximately 5 to approximately 30 μ

m.

6. The catheter of claim 1, wherein said end portion and/or said sharp tip is coated to enhance the visibility.

7. The catheter of claim 1, wherein said sharp tip is provided with an additional spike.

8. The catheter of claim 1, wherein said sharp tip is bevelled.

9. The catheter of claim 1, wherein the end opposite to the sharp tip of the catheter is provided with an adapter for the connection with an infusion line.

10. A catheter system for the injection of drugs in a microvessel, in particular in a retinal microvessel, the system comprising:

a catheter according to claim 1, and

a handle to which said catheter is mounted.

11. The catheter system of claim 10, wherein said handle is the handle of an endoscope.

12. The system of claim 11, wherein said catheter is attached to a sleeve which is mounted to the tip of the endoscope.

13. The system of claim 11, wherein said end portion extends at an angle relative to the tip of the endoscope, preferably at an angle between approximately 10°

to 60°

.

14. A catheter system for the injection of drugs in a microvessel, in particular in a retinal microvessel, the system comprising:

a catheter according to claim 1, comprising a tubing and an end portion with a sharp tip;

an endoscope having a fiberoptic tip,

wherein said catheter is attached to a sleeve and said sleeve is mounted on said fiberoptic tip.

17. The catheter of claim 1, wherein the outer diameter of said sharp tip is in the range of approximately 1 to approximately 50 μ

m.

15. A catheter for the injection of drugs in a microvessel, in particular in a retinal micro vessel, the catheter comprising

a single piece tubing made of a hard glass, the tubing having an end portion comprising a sharp tip.

16. (canceled)