Intravascular catheter with peri-vascular nerve activity sensors

A catheter and blood vessel technology, applied in the field of intravascular catheters with nerve activity sensors around blood vessels, can solve the problems of not including sensors, detecting sympathetic nerves, etc., and achieve the effect of eliminating discomfort and pain

Active Publication Date: 2016-10-26
ABLATIVE SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] While the prior art may produce ablation of the sympathetic nerves surrounding the renal arteries and thereby reduce the patient's blood pressure, none of the prior art includes sensors or additional systems to detect the activity of the sympathetic nerves being ablated

Method used

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  • Intravascular catheter with peri-vascular nerve activity sensors
  • Intravascular catheter with peri-vascular nerve activity sensors
  • Intravascular catheter with peri-vascular nerve activity sensors

Examples

Experimental program
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Embodiment Construction

[0156] figure 1 is a schematic view of the distal portion of the SNSC 10 in the open position, showing the inner tube 11, intermediate tube 12, outer tube 13, outer tube extension 14 having a distal opening 15 with a radiopaque The wire marker 36 , distal tip 34 and guide tube 30 of the outer layer 32 travel outwardly from the body of the SNSC 10 through the opening 15 in the outer tube extension 14 . Also shown are the tapered section 16 and the fixation guidewire 40 with the distal tip 42 . Sharpened wire 20 with outer insulation 22 and core wire 24 is shown in its fully deployed position. The wire 20 extends to and beyond the proximal end of the SNSC 10 and is shown here placed within the lumen of the inner tube 11 in the distal portion of the SNSC 10 . The insulating layer 22 has been removed from the distal portion of the wire 20 which will serve as an electrode for sensing nerve activity.

[0157] Opening 15 supports guide tube 30 as guide tube 30 travels outward prior...

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Abstract

An intravascular catheter for peri-vascular nerve activity sensing or measurement includes multiple needles advanced through supported guide tubes (needle guiding elements) which expand with open ends around a central axis to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the perivascular space. The system also may include means to limit and / or adjust the depth of penetration of the needles. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. The addition of an injection lumen at the proximal end of the catheter and openings in the needles adds the functionality of ablative fluid injection into the perivascular space for an integrated nerve sending and ablation capability.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Patent Application 14 / 063,907, filed October 25, 2013, and US Patent Application 14 / 064,077, filed October 25, 2013, under Title 35, USC § 120. The foregoing priority applications are hereby incorporated by reference in their entirety. technical field [0003] The present invention relates to the field of devices for ablating tissue and nerve fibers to treat hypertension, congestive heart failure and other disorders. Background technique [0004] The activity of the renal sympathetic nerves is recognized as one of the causes of essential hypertension, the most common form of hypertension. Renal sympathetic stimulation can lead to hypertension through a variety of mechanisms, including stimulation of renin release (which leads to the production of angiotensin II, a potent vasoconstrictor), renal influx of sodium associated at least in part with increased aldosterone release In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/00
CPCA61B5/0205A61B5/0215A61B5/4041A61B18/0218A61B18/1477A61B18/1492A61B2017/00039A61B2018/00434A61B2018/00577A61B2018/00839A61B2018/046A61B2018/048A61B2018/143A61B2018/1432A61B2018/1475A61B2090/376A61B2090/3966
Inventor 大卫·R·菲谢尔蒂姆·A·菲谢尔瓦尔坦·加扎罗西安史蒂文·阿尔马尼
Owner ABLATIVE SOLUTIONS INC
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