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Cryogenic balloon with greater size adjustability at lower inflation pressures

A technology for freezing balls and balloons, which is applied to balloon catheters, cooling surgical instruments, and parts of surgical instruments, etc., can solve problems such as practical limitations and inability to change the diameter.

Pending Publication Date: 2020-05-01
BOSTON SCI SCIMED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, current cryoballoons are limited in utility because the diameter of the inflated cryoballoon cannot be changed during ablation

Method used

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  • Cryogenic balloon with greater size adjustability at lower inflation pressures
  • Cryogenic balloon with greater size adjustability at lower inflation pressures
  • Cryogenic balloon with greater size adjustability at lower inflation pressures

Examples

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Embodiment Construction

[0021] Various embodiments of the invention are described herein in the context of cryoballoons for use within intravascular catheter systems. More specifically, in various embodiments, the present invention relates to balloon materials, properties, and dimensions that can be controlled to provide improved balloon diameter adjustability at different, eg, lower inflation pressures.

[0022] Those skilled in the art will appreciate that the following detailed description of the invention is illustrative only and is not intended to be limiting in any way. Other embodiments of the invention will readily occur to those skilled in the art having the benefit of this disclosure. Reference will now be made in detail to embodiments of the invention as illustrated in the accompanying drawings.

[0023]In the interest of clarity, not all of the routine features of the implementations described herein are shown and described. Of course, it should be understood that in the development of ...

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Abstract

A balloon catheter (218) for an intravascular catheter system (210) includes a cryogenic balloon (236) that is formed from a blend of polyurethane and polyamide block copolymer. The percentages of polyurethane and polyamide block copolymer can vary. For example, the cryogenic balloon (236) can be formed from greater than 50% polyurethane and less than 50% polyamide block copolymer; greater than 75% polyurethane and less than 25% polyamide block copolymer; or approximately 85% polyurethane and approximately 15% polyamide block copolymer. Additionally, a ratio of a change in inflation pressure (in psi) to a change in outer diameter (in mm) of the cryogenic balloon (236), and a ratio of outer diameter (in mm) of the cryogenic balloon (236) to inflation pressure (in psig) can be varied to formthe desired cryogenic balloon (236).

Description

[0001] related application [0002] This application claims priority to U.S. Provisional Application Serial No. 62 / 555,200, filed September 7, 2017, entitled "CRYOBALLOON HAVING GREATER SIZEADJUSTABILITY AT LOWER OPERATING PRESSURES." To the extent permitted, the contents of US Provisional Application Serial No. 62 / 555,200 are hereby incorporated by reference in their entirety. Background technique [0003] Cardiac arrhythmias involve abnormalities in the electrical conduction of the heart and are a major cause of stroke, heart disease, and sudden cardiac death. Treatment options for patients with cardiac arrhythmias include drug therapy and / or use of medical devices, which may include implantable devices and / or catheter ablation of cardiac tissue, to name a few. In particular, catheter ablation involves delivering ablation energy to tissue within the heart to block the abnormal electrical activity of depolarized cardiomyocytes that are out of sync with the heart's normal con...

Claims

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Application Information

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IPC IPC(8): A61B18/02A61L29/04A61M25/10C08L75/04C08L77/00
CPCA61B18/02A61M25/104C08L75/04A61L29/049A61B2018/00351A61B2018/00577C08L77/00A61B2018/0022A61B2018/00375A61B2018/0212A61B2090/065C08G69/40A61M25/09
Inventor 尤金·J·小荣格
Owner BOSTON SCI SCIMED INC
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