Method and apparatus for treating urethral stricture

• US 10,076,644 B2
• Filed: 12/29/2014
• Issued: 09/18/2018
• Est. Priority Date: 05/16/2014
• Status: Active Grant

• Current Assignee: Terumo Kabushiki Kaisha
• Original Assignee: Terumo Kabushiki Kaisha
• Inventors: Nishio, Kosuke, Arastoo, Riyaheh
• Primary Examiner(s): Lopez, Leslie
• Application Number:
  US14/584,152
• Publication Number:
  US 20150327982A1
• Time in Patent Office: 1,359 Days
• Field of Search: 623 123
• CPC Class Codes: A61F 2/04 Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts A61F2/18, A61F2/20 take precedence; devices, other than stent-grafts, providing patency to, or preventing collapsing of, tubular structures of the body other than stent-grafts, e.g. stents A61F2/82; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/047 Urethrae
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61M 2025/0175 having telescopic features, interengaging nestable members movable in relations to one another
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 29/00 Dilators with or without means for introducing media, e.g. remedies instruments for performing visual medical inspections of cavities or tubes of the body A61B1/00

Abstract

A method of treating a treatment area of a body lumen includes inserting an elongated member into the body lumen, wherein the elongated member is configured to guide a delivery member, the delivery member possessing an outer portion with a treatment part, moving the delivery member to the treatment area, applying the treatment part to the treatment area, and withdrawing the delivery member from the treatment area.

Claims

1. A method of treating a treatment area of a body lumen, the treatment area comprising a urethral stricture, the method comprising:

inserting an elongated member into the body lumen, wherein said elongated member is an endoscope configured to guide a delivery member, said delivery member possessing an outer surface on which is mounted a treatment part comprising a buccal mucosa;

moving the delivery member to the urethral stricture by sliding the delivery member in its entirety along the endoscope;

contacting the treatment part with the urethral stricture for a predetermined period of time while the treatment part remains mounted on the outer surface of the delivery member; and

withdrawing the delivery member from the urethral stricture after the predetermined period of time.

2. The method of claim 1, wherein the delivery member possesses a fixing member capable of fixing the delivery member to the elongated member.

3. The method of claim 2, further comprising fixing the delivery member to the elongated member via the fixing member after moving the delivery member to the urethral stricture.

4. The method of claim 2, further comprising fixing the delivery member to the elongated member via the fixing member before moving the delivery member to the urethral stricture.

5. The method of claim 2, further comprising unfixing the delivery member from the elongated member via the fixing member and withdrawing the elongated member from the delivery member.

6. The method of claim 2, wherein the fixing member comprises an expandable member.

7. The method of claim 6, wherein the expandable member comprises an inflatable balloon.

8. The method of claim 7, wherein the inflatable balloon possesses an inner portion and an outer portion, the delivery member is fixed to the elongated member by inflating the inner portion, and the treatment part is contacted with the urethral stricture by inflating the outer portion.

9. The method of claim 1, wherein the delivery member comprises an expandable member, and contact with the urethral stricture is maintained by inflating the expandable member.

10. The method of claim 9, wherein the expandable member comprises an inflatable balloon.

11. The method of claim 1, further comprising, after the step of inserting the elongated member into the body lumen, fixing the elongated member to at least one side of the edge of the body lumen.

12. The method of claim 1, further comprising, before the step of withdrawing the delivery member from the urethral stricture, detaching the treatment part from the delivery member.

13. The method of claim 1, further comprising, after the step of moving the delivery member to the urethral stricture, rotating the delivery member to a position in which the treatment part faces the urethral stricture.

14. The method of claim 1, further comprising contracting the delivery member to allow relative movement between the delivery member and the elongated member and then dismounting the delivery member from the elongated member.

15. The method of claim 1, further comprising, before the step of inserting the elongated member into the body lumen, measuring the length between an anatomical landmark and the urethral stricture.

16. The method of claim 15, wherein the anatomical landmark includes the bladder neck, the external urethra meatus, or the membranous urethra.

17. The method of claim 1, wherein, in the step of moving the delivery member to the urethral stricture, the delivery member is delivered under endoscopic view.

18. The method of claim 1, wherein, in the step of moving the delivery member to the urethral stricture, the delivery member is slid along an outer surface of the elongated member.

19. A method of treating a treatment area of a body lumen, the treatment area comprising a urethral stricture, the method comprising:

inserting an elongated member into the body lumen, wherein said elongated member is an endoscope configured to guide a delivery member, said delivery member possessing an outer surface on which is mounted a treatment part comprising a buccal mucosa;

moving the delivery member to the urethral stricture by sliding the delivery member in its entirety along the endoscope;

applying the treatment part to the urethral stricture while the treatment part remains mounted on the outer surface of the delivery member; and

withdrawing the delivery member from the urethral stricture.

20. The method of claim 19, wherein the delivery member possesses a fixing member capable of fixing the delivery member to the elongated member.

21. The method of claim 19, further comprising moving the delivery member to the urethral stricture by sliding the delivery member along an outer surface of the elongated member.