Drug supply system for CED (convection-enhanced delivery) catheter infusions

• US 7,972,305 B2
• Filed: 11/14/2008
• Issued: 07/05/2011
• Est. Priority Date: 11/14/2007
• Status: Active Grant

• Current Assignee: Brainlab AG
• Original Assignee: Brainlab AG
• Inventors: Mittermeyer, Stephan
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): Bouchelle; Laura A
• Application Number:
  US12/270,877
• Publication Number:
  US 20090124976A1
• Time in Patent Office: 963 Days
• Field of Search: 604/181, 604/185, 604/131, 604/132, 604/133, 604/141, 604/142, 604/146
• US Class Current: 604/132
• CPC Class Codes: A61M 2210/0693 Brain, cerebrum
• CPC Class Codes: A61M 31/00 Devices for introducing or retaining media, e.g. remedies, in cavities of the body A61M25/00 takes precedence ; introducing or retaining ophthalmic products into the ocular cavities A61F9/0008
• CPC Class Codes: A61M 5/14526 the piston being actuated by fluid pressure

Abstract

A drug supply system for CED (convection-enhanced delivery) catheter infusions is provided, the system including a drug conducting system having a drug depot and a catheter supply line and a conveying device that provides for conveying the drug from the drug depot into the catheter supply line. The drug conducting system is a system that is closed to the outside in a fluidic seal The drug supply system further includes a conveying fluid conveying system arranged between the conveying device and the drug supply system and is connected to the conveying device and to the drug depot, via a drug displacement element, without fluid-drug contact.

Claims

1. A drug supply system for CED (convection-enhanced delivery) catheter infusions, comprising:

a drug conducting system configured to provide a fluid seal between a drug to be administered and other fluids of the drug supply system, the drug conducting system including

i) a drug depot for storing the drug to be administered, and

ii) a catheter supply line coupled to said drug depot;

a conveying device configured to convey the drug from the drug depot into the catheter supply line; and

a conveying fluid conveying system arranged between the conveying device and the drug conducting system, said fluid conveying system connected to the drug depot via a drug displacement element, and connected to the conveying device,

wherein the conveying fluid conveying system comprises a line system including a three-way distributor and/or a reflux valve arranged in the line system.

2. The drug supply system according to claim 1, wherein the drug displacement element comprises a flexible membrane arranged in or on the drug depot and, when dilated, displaces the drug from the depot into the catheter supply line.

3. The drug supply system according to claim 2, wherein the flexible membrane is an elastic membrane.

4. The drug supply system according to claim 2, wherein the membrane comprises an inflatable device arranged in the drug depot.

5. The drug supply system according to claim 1, wherein the drug displacement element comprises a shifting wall in or on the drug depot, said shifting wall configured to move by contact pressure from the conveying fluid to displace the drug from the depot into the catheter supply line.

6. The drug supply system according to claim 1, wherein the conveying fluid conveying system comprises a line system including a connector configured to releasably couple the conveying device to/from the conveying fluid conveying system and connecting point.

7. The drug supply system according to claim 6, wherein the separating and connecting point is a quick-release connection.

8. The drug supply system according to claim 1, wherein the three-way distributor comprises a three-way stop cock and/or straight-way cock.

9. The drug supply system according to claim 1, wherein the drug depot is sub-divided into a number of chambers or the drug conducting system comprises a plurality of drug depots, wherein each chamber and/or depot comprises an independent conveying fluid supply line.

10. The drug supply system according to claim 9, wherein the conveying fluid supply lines can be switched individually or together and charged with conveying fluid by the conveying fluid conveying device.

11. The drug supply system according to claim 1, wherein the conveying fluid conveying system is a mechanically charged syringe or a pump.

12. The drug supply system according to claim 1, further comprising a drug supply controller and/or regulator configured to control and/or regulate how the drug is administered.

13. The drug supply system according to claim 12, wherein the drug supply controller and/or regulator controls and/or regulates how the drug is administered in accordance with measured external parameters.

14. The drug supply system according to claim 13, wherein the measured external parameters comprise at least one of elapsed time, temperature or particular concentrations of chemical elements and/or compounds.

15. The drug supply system according to claim 1, further comprising the drug displacement element, said drug displacement element comprising at least one of a flexible membrane, a moving wall, or a balloon.