Method and apparatus for positioning a catheter relative to an anatomical junction
a technology of anatomical junction and positioning method, which is applied in the field of method and apparatus for positioning a catheter relative to a junction, can solve the problems of inability to close the valve, incompetent valve, and additional valvular failur
a technology of anatomical junction and positioning method, which is applied in the field of method and apparatus for positioning a catheter relative to a junction, can solve the problems of inability to close the valve, incompetent valve, and additional valvular failur
US20110160813A1Inactive Publication Date: 2011-06-30TYCO HEALTHCARE GRP LP
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[0032]As shown in the exemplary drawings, the invention is directed toward the positioning of a catheter to a treatment site for the intravenous treatment of veins. As used herein, like reference numerals will designate similar elements in the various embodiments of the present invention to be discussed. In addition, unless otherwise noted, the term “working end” will refer to the direction toward the treatment site in the patient, and the term “connecting end” will refer to the direction away from the treatment site in the patient. Although the use of RF energy is discussed, it is to be understood that other forms of energy such as microwaves, ultrasound, direct current, circulating heated fluid, radiant light, and lasers can be used, and that the thermal energy generated from a resistive coil or curie point element may be used as well. The invention will be described in relation to the treatment of the venous system of the lower limbs, such as the saphenous vein in the leg. It is ...
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An electrode catheter is introduced into a vein or other hollow anatomical structure, and is positioned at a treatment: site within the structure. The end of the catheter is positioned near a junction formed in the structure. This junction can be the sapheno-femoral junction. The position of the catheter near the junction is determined based on a signal from a device associated with the catheter within the structure. A fiber optic filament which emits light is used with the catheter or a guide wire over which the catheter is advanced. The light is visible externally from the patient. The light dims and may no longer externally visible at the sapheno-femoral junction where the catheter moves past the deep fascia and toward the deep venous system. The position of the catheter can be determined based on this external observation. The position of the catheter can also be determined based on measured parameters such as temperature or flow rate within the structure, and the measured changes in one or more of these parameters as the catheter nears the junction. The hollow anatomical structure can be compressed for this procedure. The position of the catheter can also be determined mechanically by including a hook-shaped tip on the catheter or guide wire which would physically engage the junction.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of application Ser. No. 09 / 825,741 filed Apr. 3, 2001, now U.S. Pat. No. 7,789,876, which is a continuation of application Ser. No. 09 / 638,307, filed Aug. 14, 2000, now abandoned. The entirety of all of the above-mentioned applications is hereby incorporated by reference herein and made a part of this specification.BACKGROUND[0002]The invention relates generally to a method and apparatus for positioning a catheter relative to a junction in a hollow anatomical structure, such as a vein, including but not limited to, superficial and perforator veins, hemorrhoids, and esophageal varices. The catheter can include an electrode device having multiple leads for applying energy to the anatomical structure to cause it to durably assume a ligated form.[0003]The human venous system of the lower limbs consists essentially of the superficial venous system and the deep venous system with perforating veins connecting the...
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Patent Timeline
30 Jun 2011
Publication
US20110160813A1
- IPC
- A61N5/06; A61B18/14; A61M25/01
- CPC
- A61B18/1492; C08L2201/12; A61B2017/00867; A61B2017/22038; A61B2018/00273; A61B2018/00404; A61B2018/00797; A61B2018/00815
- Inventors
- ZIKORUS, ARTHUR W.; DEPALMA, RALPH G.