Shunt

• US 6,585,677 B2
• Filed: 08/29/2001
• Issued: 07/01/2003
• Est. Priority Date: 08/30/2000
• Status: Active Grant

• Current Assignee: Daniele Rigamonti, John A. Cowan, Jr., Kieran Murphy, Michael Williams
• Original Assignee: Daniele Rigamonti, John A. Cowan, Jr., Kieran Murphy, Michael Williams
• Inventors: Williams, Michael, Murphy, Kieran, Rigamonti, Daniele, Cowan, John A. Jr.
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): Deak, Leslie R
• Application Number:
  US09/942,223
• Publication Number:
  US 20020026138A1
• Time in Patent Office: 671 Days
• Field of Search: 604/8-10, 604/523, 604/264, 604/65, 604/9, 600/561, 600/300
• US Class Current: 604/9
• CPC Class Codes: A61M 2025/0019 Cleaning catheters or the like, e.g. for reuse of the device, for avoiding replacement
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 27/002 Implant devices for drainage of body fluids from one part of the body to another intraocular A61F9/00781; middle ear A61F11/202
• CPC Class Codes: A61M 27/006 Cerebrospinal drainage; Accessories therefor, e.g. valves
• CPC Class Codes: A61M 39/04 having pierceable self-sealing members

Abstract

A shunt for draining cerebral spinal fluid from the brain is provided. In an embodiment, the shunt includes a master control unit that is located in the abdomen, which interconnects a ventricular catheter and a second catheter, typically located in the peritoneal cavity. In a specific embodiment, the master control unit includes a variety of ‘smart’ features including at least one access port to allow the injection of solutions for the prevention or removal of blockages in the catheter, and/or antibiotics. The access port can have other uses, such as allowing a point of access for physical navigation of a catheter or the like within the shunt, thereby providing another option for breaking-up blockages, and/or allowing an access point for repairing the shunt'"'"'s components. Additionally, the master control unit includes a diagnostic unit that transmits, either wirelessly or through a wired connection via the access port, diagnostic information about the status of the patient and/or the shunt.

Claims

1. A cerebral spinal fluid (CSF) draining shunt, comprising:

a CSF space catheter configured to (i) be inserted into a CSF space of a patient, and (ii) to receive CSF from the CSF space of the patient;

a body cavity catheter configured to (i) be inserted into a body cavity of the patient, and (ii) to drain the CSF received by said CSF space catheter into the body cavity;

an implantable master control unit configured to be implanted into the patient in a biocompatible location, said master control unit interconnecting said CSF space catheter and said body cavity catheter, said master control unit having a regulator for selectively draining an excess of said CSF from said CSF space catheter to said body cavity catheter; and

at least one master control unit access port disposed in said master control unit intermediate said CSF space catheter and said body cavity catheter, said at least one master control unit access port being configured to provide access for remedial structure into said master control unit without requiring said master control unit'"'"'s removal from the patient.

2. The shunt according to claim 1 wherein the CSF space comprises a ventricle.

3. The shunt according to claim 2 wherein the body cavity comprises at least one of the patient'"'"'s peritoneum, pleural space, or vascular space.

4. The shunt according to claim 2 wherein said regulator comprises a microprocessor based valve-gauge assembly for (i) determining when said CSF requires draining and (ii) allowing said CSF to drain from said ventricle to said body cavity.

5. The shunt according to claim 4 wherein said microprocessor based valve-gauge assembly has a normally-open position to allow a preset amount of drainage of CSF in the event of a power-failure to said valve-gauge assembly.

6. The shunt according to claim 4 wherein said shunt further comprises a transmitter connected to said valve-gauge assembly for gathering pressure information therefrom, said transmitter for reporting said pressure information to a receiver external to said patient.

7. The shunt according to claim 1 wherein said biocompatible location is one of said patient'"'"'s skull, chest cavity or abdomen.

8. The shunt according to claim 1 wherein said regulator comprises a mechanical flow-valve regulator.

9. The shunt according to claim 1 further comprising a diagnostic unit for detecting abnormal metabolic activity within said patient, and a transmitter for providing a delivery of said metabolic activity to a receiver external to said patient.

10. The shunt according to claim 9 wherein said transmitter is operable to perform said delivery wirelessly to said receiver.

11. The shunt according to claim 8 wherein said transmitter includes a memory buffer for accumulating data from said diagnostic unit prior to said delivery.

12. The shunt according to claim 1 further comprising a blockage-ablation device, and wherein said at least one access port is configured to allow an introduction of said blockage-ablation device into said master control unit.

13. The shunt according to claim 11 wherein said blockage-ablation device comprises a micro-catheter having a tip suitable for piercing said blockage.

14. The shunt according to claim 12 wherein said blockage-ablation device comprises a radio-frequency ablation device.

15. The shunt according to claim 12 wherein master control unit further comprises a fluid bladder accessible via said at least one access port, said fluid bladder being configured for injection therein of at least one solution.

16. The shunt according to claim 15 wherein said fluid bladder is configured for injection therein of an anticoagulant.

17. The shunt according to claim 15 wherein said fluid bladder is configured for injection therein of an antibiotic.

18. The shunt according to claim 1 wherein said at least one access port includes a self-healing plastic membrane.

19. The shunt according to claim 1 wherein said master control unit further comprises a control unit catheter line disposed between said CSF space catheter and said body cavity catheter, wherein said at least one access port comprises at least two access ports in said master control unit, wherein one of said access ports is located on said control unit catheter line intermediate said master control unit and said body cavity catheter, and wherein a second one of said access ports is located on said control unit catheter line intermediate said CSF space catheter and said master control unit.

20. The shunt according to claim 1 wherein at least a portion of said shunt has an antibiotic coating.

21. A CSF draining shunt according to claim 1, wherein said at least one master control unit access port is disposed upstream of said regulator.

22. A CSF draining shunt according to claim 21, further comprising another master control unit access port disposed downstream of said regulator.

23. A CSF draining shunt according to claim 22, further comprising a CSF space catheter access port disposed in said CSF space catheter.

24. A CSF draining shunt according to claim 23, further comprising a body cavity catheter access port disposed in said body cavity catheter.

25. A CSF draining shunt according to claim 24, wherein said regulator monitors a pressure of CSF in said CSF space catheter.

26. A CSF draining shunt according to claim 1, further comprising a body cavity catheter tip disposed at an end of said body cavity catheter, and wherein said body cavity catheter tip is expandable.

27. A CSF draining shunt according to claim 1, wherein said implantable master control unit is configured to be implanted into a chest of the patient.

28. A CSF draining shunt according to claim 1, wherein at least a portion of said body cavity catheter comprises an adhesion resistant material.

29. A CSF draining shunt according to claim 1, wherein at least a portion of said CSF space catheter comprises an infection resistant material.

30. A cerebral spinal fluid (CSF) draining shunt, comprising:

a CSF space catheter configured to (i) be inserted into a CSF space of a patient, and (ii) to receive CSF from the CSF space of the patient;

a body cavity catheter configured to (i) be inserted into a body cavity of the patient, and (ii) to drain the CSF received by said CSF space catheter into the body cavity;

an implantable master control unit configured to be implanted into the patient in a biocompatible location, said master control unit interconnecting said CSF space catheter and said body cavity catheter, said master control unit having a regulator for selectively draining an excess of said CSF from said CSF space catheter to said body cavity catheter;

a first access port disposed in said CSF space catheter and configured to provide access to the CSF space; and

a second access port disposed in said body cavity catheter and configured to provide access to the body cavity.

31. A CSF draining shunt according to claim 30, further comprising at least one master control unit access port disposed in said master control unit intermediate said CSF space catheter and said body cavity catheter, said at least one master control unit access port being configured to provide access for remedial structure into said master control unit without requiring said master control unit'"'"'s removal from the patient.

32. A CSF draining shunt according to claim 31, wherein said at least one master control unit access port is disposed upstream of said regulator.

33. A CSF draining shunt according to claim 32, further comprising another master control unit access port disposed downstream of said regulator.

34. A CSF draining shunt according to claim 33, wherein said implantable master control unit is configured to be implanted into a chest of the patient.

35. A CSF draining shunt according to claim 30, wherein at least a portion of said body cavity catheter comprises an adhesion resistant material.

36. A CSF draining shunt according to claim 35, wherein at least a portion of said CSF space catheter comprises an infection resistant material.

37. A cerebral spinal fluid (CSF) draining shunt, comprising:

a CSF space catheter configured to (i) be inserted into a CSF space of a patient, and (ii) to receive CSF from the CSF space of the patient, said CSF space catheter comprising an adhesion resistant coating;

a body cavity catheter configured to (i) be inserted into a body cavity of the patient, and (ii) to drain the CSF received by said CSF space catheter into the body cavity; and

an implantable master control unit configured to be implanted into the patient in a biocompatible location, said master control unit interconnecting said CSF space catheter and said body cavity catheter, said master control unit having a regulator for selectively draining an excess of said CSF from said CSF space catheter to said body cavity catheter.

38. A CSF draining shunt according to claim 37, wherein at least a portion of said CSF space catheter comprises an infection resistant material.

39. A CSF draining shunt according to claim 37, further comprising at least one master control unit access port disposed in said master control unit intermediate said CSF space catheter and said body cavity catheter, said at least one master control unit access port being configured to provide access for remedial structure into said master control unit without requiring said master control unit'"'"'s removal from the patient.

40. A CSF draining shunt according to claim 37, wherein said at least one master control unit access port is disposed upstream of said regulator.

41. A CSF draining shunt according to claim 40, further comprising another master control unit access port disposed downstream of said regulator.

42. A CSF draining shunt according to claim 37, wherein said implantable master control unit is configured to be implanted into a chest of the patient.

43. A CSF draining shunt according to claim 37, further comprising a CSF space catheter access port disposed in said CSF space catheter.

44. A CSF draining shunt according to claim 37, further comprising a body cavity catheter access port disposed in said body cavity catheter.