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Ball for measuring diameter of heart septal defect expansion circle

A technology for measuring the diameter of a ball and a circle, applied in the field of medical devices, can solve the problems of inaccurate diameter of the extension circle at the heart septal defect, and achieve the effect of improving the success rate

Inactive Publication Date: 2011-06-29
赵菁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the inaccurate inaccurate diameter of the stretch circle at the cardiac septal defect estimated by the existing visual inspection, the present invention provides a heart septal defect stretch circle diameter measuring ball for accurately measuring the stretch circle diameter of the cardiac septal defect

Method used

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  • Ball for measuring diameter of heart septal defect expansion circle
  • Ball for measuring diameter of heart septal defect expansion circle
  • Ball for measuring diameter of heart septal defect expansion circle

Examples

Experimental program
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Embodiment Construction

[0013] in the attached figure 1 Among them, the main part of the heart septal defect stretching circle diameter measuring ball is made into an elastic net (1) with good shape memory function, which is drawn in a long strip by external force, and immediately restores the original preset shape after the external force is removed; the elastic net (1) is braided with nickel-titanium alloy wire and then shaped and heat-treated. It expands into a spherical shape. The high-elastic polyester sealing film (5) is sewn to the outside of the elastic net (1) with medical sutures; measure the front end of the ball There is a head (2) for gathering and fixing the elastic net at the center, and a joint (3) for gathering and fixing the elastic net at the center of the rear end; figure 2 In the process, the measuring ball can be put into the delivery sheath (6) after being drawn and shrunk into a long strip, and connected to the delivery steel cable (7) through the connecting hole (4) at the a...

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Abstract

The invention discloses a ball for measuring the diameter of a heart septal defect expansion circle. The main body part of the ball for measuring the diameter of the heart septal defect expansion circle is made into an elastic net which has a good shape memorizing function and can change into a long strip under the action of an external force and restore the original default shape after the external force is removed. The elastic net is braided by nickel-titanium alloy wires with a diameter of between 0.2 and 0.4 millimeters and then formed by molding and heat treatment. The measuring ball is spherical after expansion; an end socket for holding the alloy wires together and fixing the alloy wires is arranged in the centre of the front end of the measuring ball; a connector for holding the alloy wires together and fixing the alloy wires is arranged in the centre of the rear end of a plugging device and can be connected with a delivery steel cable through a connecting hole at the axis part of the connector. In use, the measuring ball is placed at the heat defect part through built rails by pushing the delivery steel cable and slowly expanded till the defect is basically plugged, thus,the diameter, which is measured on a monitor, of the measuring ball is the diameter of the heart septal defect expansion circle.

Description

(1) Technical field [0001] The invention relates to the technical field of medical devices, in particular to an auxiliary measuring device for treating congenital heart disease with a heart septal defect extension circle diameter measuring ball. (2) Background technology [0002] Congenital heart disease Atrial septal defect and ventricular septal defect are common congenital heart diseases. The characteristic of atrial septal defect is that the interval between the left and right atria fails to close normally, and blood flows between the left atrium and the right atrium; Septal defects are characterized by the failure of the septum between the left and right ventricles to close properly, allowing blood to flow between the left and right ventricles. Because the pressure in the left atrium is higher than that in the right atrium, part of the blood from the left atrium is shunted to the right atrium through the atrial septal defect. Due to the leakage of blood, the burden on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/107
Inventor 赵菁
Owner 赵菁
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