Medical liquid delivery device

• US 7,204,824 B2
• Filed: 07/29/2003
• Issued: 04/17/2007
• Est. Priority Date: 07/29/2003
• Status: Expired due to Fees

• Current Assignee: Harry Moulis
• Original Assignee: Harry Moulis
• Inventors: Moulis, Harry
• Primary Examiner(s): Lucchesi; Nicholas
• Assistant Examiner(s): Stigell; Theodore J.
• Application Number:
  US10/629,527
• Publication Number:
  US 20050025798A1
• Time in Patent Office: 1,358 Days
• Field of Search: 604/121, 604/96.01, 604 11- 18, 604/286, 604 1- 3, 604317-416, 604/93.01, 604158-159, 604/500, 604/164.01, 604/164.02, 604/164.04, 604/164.07, 604/171, 604/181, 604/182, 604/185, 604/187, 604/285, 604/287, 604/289, 604/290, 604/95.04, 604/104, 604/528, 600/201, 600/205, 600/215, 424/424, 424/423, 606/13
• US Class Current: 604/93.01
• CPC Class Codes: A61M 2025/105 having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
• 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

Abstract

Disclosed herein are novel liquid delivery catheters, and methods and kits implementing the same. The disclosed catheters are particularly useful for localized delivery of a liquid caustic agent to treat various defects associated with malformations and injuries resulting in chronic or acute bleeding, or to ablate tumors, occlude fistulae or other luminal structures. The disclosed devices have uses in a number of medical disciplines, and specific examples are provided pertaining to treatment of defects, malformations, and injuries, or bleeding due to medical procedures, in and along the gastrointestinal tract.

Claims

1. A liquid delivery catheter comprising:

a). a cannulated catheter comprising an elongated portion, said elongated portion comprising a proximal end and a distal end;

b). a retractable device that is extended and retracted out the distal end of the catheter;

c) a liquid impermeable barrier covering a portion of said retractable device thereby creating an exposed portion and covered portion of said retractable device when extended, said liquid impermeable barrier configured so as to provide fluid communication between said retractable device and said cannulated catheter; and

d) a squeezable material disposed within said retractable device.

2. The liquid delivery catheter of claim 1, wherein said retractable device is connected to a mechanical interlink disposed within said liquid delivery catheter.

3. The liquid delivery catheter of claim 2, wherein said proximal end is attached to or integrated with a stock base;

and further comprising a stock handle slidingly engaged to said stock base, wherein said mechanical interlink is conjoined to said stock handle such that upon sliding said stock handle into said stock base said retractable device is moved.

5. The liquid delivery catheter of claim 1, wherein said retractable device is a retractable basket comprising at least one flexible support wire, said at least one flexible support wire configured such that it forms a closed support structure comprising a space for said squeezable material.

6. The liquid delivery catheter of claim 5, wherein said retractable device comprises at least three flexible support wires conjoined or integrated together at a distal apex.

7. The liquid delivery catheter of claim 1 wherein said retractable device comprises a retractable net comprising at least one flexible support guide.

8. The liquid delivery catheter of claim 7 further comprising a squeezable material disposed within said retractable net.

9. The liquid delivery catheter of claim 1 wherein said retractable device comprises a retractable tripod having a proximal end and a distal end, said retractable tripod comprising at least three flexible support members and a mesh attached to said at least three flexible support wires at the distal end of said retractable tripod.

10. The liquid delivery catheter of claim 9, wherein said retractable tripod comprises a squeezable material disposed in the space between at least three flexible support wires.

13. A method of treating an area of need of a patient comprising obtaining the liquid delivery catheter of claim 1;

wetting the retractable device with a liquid agent;

applying the liquid agent to the area of need by contacting the retractable device to the area of need.

14. The method of claim 13, wherein the liquid agent is a caustic agent.

4. The liquid delivery catheter of 1, further comprising a liquid injection port disposed thereon such that liquid may be injected into said catheter and exuded out said distal end of said catheter to said retractable device.

11. A liquid delivery catheter comprising:

a) an outer cannulated catheter comprising a proximal end and a distal end;

b) an inner cannulated catheter disposed within said outer cannulated catheter comprising a proximal end and a distal end

c) a retractable device attached to or integrated with said distal end of said inner cannulated catheter that is extended and retracted out the distal end of said outer catheter, said retractable device comprising a brush that comprises at least one lumen in fluid communication with said inner cannulated catheter and wherein said brush comprises bristles for receiving and applying a fluid, the fluid distributed to said bristles from said lumen; and

d) a syringe attached to said proximate end of said inner cannulated catheter.

12. The liquid delivery catheter of claim 11 wherein said brush comprises bristles configured substantially in arcuate manner around said at least one lumen.

15. A method of treating an area of need of a patient comprising obtaining the liquid delivery catheter 11;

wetting the retractable device with a liquid agent;

applying the liquid agent to the area of need by contacting the retractable device to the area of need.

16. The method of claim 15, wherein the liquid agent is a caustic agent.