EXTERNALLY DISPOSED PUMP FOR USE WITH AN INTERNALLY MOUNTED AND COMPLIANT CATHETER

• US 20050177136A1
• Filed: 12/20/2004
• Published: 08/11/2005
• Est. Priority Date: 12/19/2003
• Status: Abandoned Application

• Current Assignee: Landon C.G. Miller
• Original Assignee: Landon C.G. Miller
• Inventors: Miller, Landon C.G.
• Application Number:
  US11/017,297
• Publication Number:
  US 20050177136A1
• Time in Patent Office: Days
• US Class Current: 604/890.100
• CPC Class Codes: A61M 2005/14506 mechanically driven, e.g. spring or clockwork
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/145 using pressurised reservoirs, e.g. pressurised by means of pistons

Abstract

A therapeutic agent delivery pump includes a bottle having a pressurant chamber containing a pressurant and a therapeutic agent volume, the volume terminating in a visco-elastic septum. The bottle has a piercing element in alignment with the septum and in fluid communication with tubing. A flow restriction gauge impinges on the tubing to restrict the flow of a therapeutic agent from the balloon. An intrathecal drug delivery system includes a pump as described above, along with a pressure compatible catheter. A connector is provided between the pump and the catheter. An externally disposed therapeutic pump assembly for administering a therapeutic delivery agent in metered fashion to an internal location of a patient includes a three-dimensional body, with a lid secured to the body. A bag holding a volume of therapeutic delivery agent contained within the body in order to progressively compress.

Claims

1. A therapeutic agent delivery pump comprising:

a bottle having a pressurant chamber containing a pressurant and a therapeutic agent volume, the volume terminating in a visco-elastic septum;

a piercing element in alignment with the septum and in fluid communication with tubing; and

a flow restriction gauge impinging on the tubing to restrict the flow of a therapeutic agent from the balloon.

2. The pump of claim 1 further comprising a pressurant chamber inlet in a wall of said bottle.

3. The pump of claim 2 wherein the wall is a bottom wall.

4. The pump of claim 1 wherein said restrictor is a mechanical caliper.

5. The pump of claim 1 further comprising a tubing cross-sectional area reducing plug.

6. The pump of claim 1 wherein said restrictor gauge is accessible from the exterior of said pump housing.

7. The pump of claim 6 wherein said gauge is recessed into the pump housing.

8. The pump of claim 1 wherein the pressurant is selected from the group consisting of:

halocarbons, dinitrogen, noble gases, and carbon dioxide.

9. The pump of claim 1 further comprising a cover pierceable by said piercing element and intermediate between the piercing element and the septum.

10. The pump of claim 1 further comprising an antimicrobial coating on the septum.

11. An intrathecal drug delivery system comprising:

a pump according to claim 1;

a pressure compatible catheter; and

a connector therebetween.

12. The system of claim 11 further comprising an antimicrobial filter between said pump and said catheter.

13. The system of claim 11 wherein said connector further couples an accessory to said pump and said catheter.

14. The system of claim 13 wherein said accessory is selective from the group consisting of:

a pressure transducer, a therapeutic agent injection portal, and a drug delivery pump.

15. The system of claim 11 wherein said catheter is implanted within a subject.

16. The system of claim 1 wherein said therapeutic agent volume is defined by a balloon.

17. An externally disposed therapeutic pump assembly for administering a therapeutic delivery agent in metered fashion to an internal location of a patient, said assembly comprising:

a three-dimensional body;

a lid secured to said body; and

a bag holding a volume of therapeutic delivery agent contained within said body, said bag being progressively compressed in order to administer said therapeutic agent in metered fashion to a catheter tube extending from said body and in communication with the internal delivery location of the patient.

18. The pump assembly as described in claim 17, further comprising a gear roller traversable along a track bed within said body, an end of said bag being secured to said roller and such that said bag is compressed and progressively wound about said bag.

19. The pump assembly as described in claim 17, further comprising a crank assembly for actuating said gear roller, a helical spring providing a biasing contact between said spring and said compressible bag.

20. The pump assembly as described in claim 17, further comprising a regulator valve in communication with an outlet of said bag, a catheter connector tube extending from said valve.

21. The pump assembly as described in claim 17, further comprising a flat spring progressively traversable along said base and acting upon a crosswise extending plate in turn secured to said bag and such that said bag is compressed.

22. An externally disposed therapeutic pump assembly for administering a therapeutic delivery agent in metered fashion to an internal location of a patient, said assembly comprising:

a three-dimensional body;

a lid secured to said body; and

an internally pressurized and fluid holding vessel contained within said body, said vessel administering a therapeutic agent in metered fashion to a catheter tube extending from said vessel and in communication with the internal delivery location of the patient.

23. The pump assembly as described in claim 22, further comprising a screw down regulator valve in communication with an outlet location of said catheter tube.

24. The pump assembly as described in claim 22, further comprising a piercing bottle needle extending from an inlet end of said catheter tube and inserted within said internally pressurized vessel.