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Force sensing catheter including sealed electrode tip assembly and methods of assembling same

A technology of electrode tips and components, applied in the direction of catheters, surgical instrument parts, cooling surgical instruments, etc., can solve the problems of increasing optical fiber strain, inaccurate force reading, excessive stress of optical fiber, etc.

Pending Publication Date: 2022-02-11
ST JUDE MEDICAL CARDILOGY DIV INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, increasing the size of a force sensor to accommodate a seal increases the strain on its optical fiber, leading to inaccurate force readings or excessive stress on the optical fiber

Method used

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  • Force sensing catheter including sealed electrode tip assembly and methods of assembling same
  • Force sensing catheter including sealed electrode tip assembly and methods of assembling same
  • Force sensing catheter including sealed electrode tip assembly and methods of assembling same

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Embodiment Construction

[0020] The present disclosure relates to ablation systems and methods of forming the same, and more particularly, to ablation catheters including force sensors and electrode tip assemblies sealed with the force sensors. Embodiments of the systems and methods disclosed herein facilitate providing an ablation catheter with force and temperature sensors sealed from an electrode tip assembly, thereby facilitating monitoring of temperature and applied force during an ablation procedure. The temperature sensor is routed through the flush piping to reduce the possibility of leaks near the force sensor that could adversely affect the force measurement. This arrangement enables a simpler and more reliable seal between the force sensor and electrode tip assembly, and also enables a reduced diameter force sensor, which reduces the likelihood of the force sensor being overstressed or strained during operation. The ablation catheters described herein also include a fluid manifold configure...

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Abstract

Disclosed herein is an ablation catheter that includes an irrigation conduit, a force sensor, an electrode tip assembly, a seal, and a temperature sensor. The irrigation conduit defines an irrigation lumen configured to carry irrigation fluid to a distal end of the ablation catheter. The force sensors include a deformable body coupled to the irrigation conduit adjacent a distal end thereof. The electrode tip assembly is coupled to the deformable body and extends distally therefrom, and defines an interior cavity in fluid communication with the irrigation lumen and an exterior cavity in which a distal portion of the deformable body is received. The seal is disposed between the electrode tip assembly and the deformable body, and inhibits fluid flow between the interior cavity and the exterior cavity. The temperature sensor is coupled to the electrode tip assembly and extends from the electrode tip assembly through the irrigation lumen.

Description

[0001] Background of the Disclosure [0002] This application claims priority to U.S. Provisional Patent Application Serial No. 62 / 893,439, filed August 29, 2019, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present disclosure generally relates to electrophysiological (EP) catheters. More particularly, the present disclosure relates to ablation systems that include an EP catheter that includes a force sensor and a sealed electrode tip assembly that prevents irrigation fluid from interfering with the force sensor. Background technique [0004] Electrophysiology catheters are used in an increasing number of medical procedures. For example, catheters are used in diagnostic, therapeutic and ablation procedures. Typically, the catheter is navigated through the patient's vasculature and to a predetermined site, such as a site within the patient's cardiovascular system, such as the heart or renal arteries. [0005] Ca...

Claims

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Application Information

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IPC IPC(8): A61B18/12A61B18/14A61B18/02
CPCA61B18/12A61B18/1492A61B18/02A61B2218/002A61B2018/00839A61B2018/00863A61B2018/00011A61B2018/00029A61B2018/00345A61B2018/00577A61B2018/00821A61B2018/0212A61B2018/00613A61B2018/00791A61B2090/064A61B90/06A61B18/1206
Inventor M·B·克兰斯J·霍姆伯格J·J·拜斯曼
Owner ST JUDE MEDICAL CARDILOGY DIV INC