Method and device for obtaining prostatic material

• US 20020026209A1
• Filed: 07/25/2001
• Published: 02/28/2002
• Est. Priority Date: 07/25/2000
• Status: Abandoned Application

• Current Assignee: David Hung
• Original Assignee: David Hung
• Inventors: Hung, David
• Application Number:
  US09/912,055
• Publication Number:
  US 20020026209A1
• Time in Patent Office: Days
• US Class Current: 606/192
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61B 2017/00274 Prostate operation, e.g. prostatectomy, turp, bhp treatment
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22054 with two balloons
• CPC Class Codes: A61B 2018/00547 Prostate
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/81 Piston pumps, e.g. syringes
• CPC Class Codes: A61M 2025/09141 made of shape memory alloys which take a particular shape at a certain temperature
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2025/1095 with perfusion means for enabling blood circulation while the balloon is in an inflated state or in a deflated state, e.g. permanent by-pass within catheter shaft
• CPC Class Codes: A61M 2210/166 Prostate

Abstract

A method and apparatus for obtaining prostatic material by introducing a washing fluid to a prostatic portion of a urethra and collecting at least a portion of the washing fluid comprising prostatic material for analysis.

Claims

1. A method for collecting prostatic material comprising:

(a) introducing a washing fluid to a prostatic portion of a urethra; and

(b) collecting at least a portion of the washing fluid comprising prostatic material.

2. A method as in claim 1, wherein the material comprises molecular species.

3. A method as in claim 2, wherein the molecular species comprises one or more of the following:

a protein, a polypeptide, a peptide, a nucleic acid, a polynucleotide, an MRNA, a small organic molecule, a lipid, a phospholipid, a fat, a glycoprotein, a glycopeptide, a carbohydrate, an oligosaccharide, a chromosomal abnormality, a particle, a secreted molecule, a cell surface molecule, an intracellular molecule, and a complex of a plurality of molecules.

4. A method as in claim 1, wherein the material comprises cells.

5. A method as in claim 4, wherein the cells comprise prostatic ductal epithelial cells.

6. A method for collecting material from one or more prostatic ducts of a patient said method comprising:

(a) introducing a device through a urethra of a patient,

(b) locating the device in or near a prostatic portion of said urethra,

(c) introducing a washing fluid throughout the prostatic portion, and

(d) collecting at least a portion of the washing fluid mixed with prostatic material.

7. A method as in claim 6, wherein the prostatic material comprises molecular species.

8. A method as in claim 7, wherein the molecular species comprises one or more of the following:

a protein, a polypeptide, a peptide, a nucleic acid, a polynucleotide, an mRNA, a small organic molecule, a lipid, a phospholipid, a fat, a glycoprotein, a glycopeptide, a carbohydrate, an oligosaccharide, a chromosomal abnormality, a particle, a secreted molecule, a cell surface molecule, an intracellular molecule, and a complex of a plurality of molecules.

9. A method as in claim 7, wherein the prostatic material comprises cells.

10. A method as in claim 9, wherein the cells comprises prostatic ductal epithelial cells.

11. A method of treating a prostate condition in a patient comprising the steps of:

(a) locating a prostatic portion of a urethra, and

(b) introducing a composition comprising a prophylactic or therapeutic agent to said prostatic portion.

13. A method as in claim 12, wherein introduction into the prostatic portion of the urethra comprises also introducing the agent into one or more prostatic ducts.

14. A method as in claim 12, wherein the composition comprises a polymer for facilitating time-release of the prophylactic or therapeutic agent to the prostatic portion.

15. A method as in claim 14, wherein the polymer forms a gel once introduced into the prostatic portion of the urethra.

16. A method as in claim 12, wherein the composition comprises an agent that is activated by an energy source.

17. A method as in claim 14, wherein the energy source is selected from the group consisting of heat, X-rays, ultrasound, infrared light, and other light.

18. A method as in claim 12, wherein the agent comprises a radioactive isotope.

19. A method as in claim 12, wherein the composition can be visualized in the prostatic portion of the urethra by an imaging modality.

20. A method as in claim 17, wherein the imaging modality is selected from the group consisting of ultrasound, X-ray, and magnetic resonance.

21. A method as in claim 12, wherein the agent comprises an anti-testosterone agent.

22. A method as in claim 19, wherein the anti-testosterone agent is selected from the group consisting of flutamide and leuprolide.

25. The device according to claim 24 wherein said expandable positioning members comprise inflatable members.

26. The device according to claim 24 wherein said fluid delivery portion includes a plurality of fluid delivery ports.

27. The device of claim 26 wherein said fluid delivery ports are spaced from each other along the length of the device and around an outer circumference of the lumen.

29. The device of claim 28 wherein said expandable delivery portion extends along the length of said at least one lumen.

30. The device of claim 29 wherein said expandable fluid delivery portion comprises a shape memory material.

12. A method of treating a prostate condition in a patient comprising:

(a) accessing a prostatic portion of a urethra with an access device, and

(b) introducing a composition comprising a prophylactic or therapeutic agent to said prostatic portion.

23. A device to access a prostatic portion of a urethra comprising an access lumen to infuse wash fluid into the prostatic portion of the urethra and collect prostatic material mixed with wash fluid from within the prostatic portion of the urethra.

24. A device for accessing a prostatic portion of a urethra, said device comprising at least one lumen, a first expandable positioning member, a second expandable positioning member and a fluid delivery portion located between said expandable positioning members for being located proximate prostatic ducts within the urethra, said fluid delivery portion including at least one port for infusing fluid into at least one of the prostatic ducts after said expandable positioning members have been expanded.

28. A device for accessing a prostatic portion of a urethra, said device comprising at least one lumen and an expandable fluid delivery portion for being positioned proximate prostatic ducts within the urethra, said fluid delivery portion including at least one port for infusing fluid into at least one of the prostatic ducts after being expanded.

31. A device for accessing a prostatic portion of a urethra, said device comprising at least one lumen having a diameter that tapers over at least a portion of its length in a direction of a distal end such that a fluid delivery portion of the device forms a tight fit with a inner wall of the urethra carrying a plurality of prostatic ducts, said fluid delivery portion including at least one fluid delivery port for infusing fluid into at least one of the prostatic ducts.

32. The device of claim 31 wherein said fluid delivery portion includes a plurality of fluid delivery ports.

33. A device for accessing a prostatic portion of a urethra, said device comprising at least one lumen having a flexible distal end including an infusion port, a fiberoptic scope and a guidewire formed of a shape memory material that changes an orientation of said flexible distal end when a stimulus is applied to said guidewire.

34. The device of claim 33 wherein said shape memory material includes nitinol.

35. The device of claim 33 wherein said guidewire is positioned within a lumen of said device.

36. The device of claim 33 wherein said fiberoptic scope is positioned along an exterior surface of the at least one lumen.