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Sizing catheter for measuring septal defects

A technique for measuring catheters and lumens, applied in the direction of catheters, balloon catheters, diagnostic recording/measurement, etc., can solve problems such as non-tightness of devices, increased risk of embolism and residual shunt

Inactive Publication Date: 2004-10-13
AGA MEDICAL CORP MS US
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the selected device is too small, the risk of embolism and residual shunt will increase significantly
On the other hand, if the device is too large, the device will not fit snugly within the opening or defect

Method used

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  • Sizing catheter for measuring septal defects
  • Sizing catheter for measuring septal defects
  • Sizing catheter for measuring septal defects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Detailed description of preferred examples

[0026] Referring firstly to FIG. 1 , a measuring catheter 10 for measuring the size of a channel, an opening or a defect is shown. Measuring catheter 10 includes: a tubular rod 12 having a longitudinal axis extending between a proximal end 14 and a distal end 16, the longitudinal axis including first and second lumens 18 and 20 formed therein . The proximal end includes a guide wire adapter 22 and a pressure valve assembly 24 coupled thereto. Without limitation, in the preferred embodiment, first lumen 18 is adapted to receive a guiding wire (not shown) therein. Formed in the tubular rod 12 is a second cavity 20 extending from the proximal end 14 of the tubular rod 12 to less than the distal end 16 and finally a series of holes 28 extending from the cavity 20 through the tubular rod 12 to the tubular rod 12 appearance (see Figure 2). An elongated bundle of expanding bulbs 26 is secured to the tubu...

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PUM

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Abstract

This invention relates to a sizing catheter(10), and method of measuring a preselected internal opening within a patient to provide a rapid, precise determination of a stretched diameter of the preselected internal opening. The sizing catheter(10)includes a dilation balloon(26)constructed of a thin expandable plastic which is inflatable, and is utilized to determine a size of the preselected opening. The dilation balloon(26)is inflated to an inflation threshold, wherein the dilation balloon(26)deforms about the preselected opening, and the size of the dilation balloon(26)adjacent the preselected opening approximates a stretched diameter of the preselected opening. The sizing catheter(10), and method may be utilized to determine an appropriate sized occluding device to thereby occlude the preselected opening.

Description

Background technique [0001] I. Field of Invention [0002] The present invention generally relates to devices and non-surgical methods for determining the size of internal openings in a patient. More particularly, the present invention relates to a measuring catheter and method of use thereof, wherein the measuring catheter may be used to determine the dilated diameter of a passageway in a patient's body. The measuring catheter of the invention is particularly suitable for determining the dilated diameter of a defect in a patient's heart, such as a septal defect. Once the dilated diameter of the defect is known, an appropriately sized closure device can be selected and placed within the opening of the defect. [0003] II. DESCRIPTION OF RELATED TECHNOLOGY [0004] Over the years, various medical devices have been developed, including stents and closure devices, for the placement of a passage, opening, or defect in a preselected patient's body. Composite devices can be deli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B10/00A61B5/107A61F2/958A61M25/00
CPCA61B5/1076A61M25/10A61B5/02
Inventor K·安普拉茨M·R·阿弗里穆
Owner AGA MEDICAL CORP MS US
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