Multifunctional heart septum tubular puncture device and manufacturing method and application thereof

Abstract

The invention provides a multifunctional heart septum tubular puncture device and a manufacturing method and application thereof. The multifunctional heart septum tubular puncture device comprises a tubular puncture needle, a metal protective sleeve and a direction indicator, wherein the tubular puncture needle is made of a nickel-titanium-based shape memory alloy and comprises a needle body and aneedle point, the needle body is of a hollow tubular structure, and a bent part with a certain bending angle is arranged on the portion, close to the needle tip, of the needle body; the portion, close to the needle point, of the needle body and the needle point are sleeved with the metal protective sleeve; the direction indicator is arranged at the tail part of the tubular puncture needle body and is used for determining the bending direction of the needle point. After the tubular puncture needle enters the heart chamber and the portion, close to the needle point, of the needle body is heated, the hardness of the portion is improved and the portion can be automatically bent to the bending angle. By using the device, the device can enter the right atrium through the inferior vena cava to puncture the atrial septum or enter the left ventricle through the peripheral artery to puncture the interventricular septum. The device can also assist in heart chamber contrast positioning and internal pressure monitoring of the heart chamber.

Description

technical field [0001] The invention relates to a multifunctional cardiac septum tubular puncture device, a manufacturing method and application thereof, and belongs to the technical field of medical devices. Background technique [0002] Background of heart atrial septal puncture : [0003] Transcatheter transseptal puncture of the heart is one of the commonly used techniques in clinical practice. It provides an effective surgical path for entering the left heart through the venous-right heart system for interventional therapy. It is an indispensable method for many cardiac interventional procedures, such as transcatheter atrial fibrillation radiofrequency Ablation, transcatheter mitral balloon annuloplasty, transcatheter left atrial ear closure, transcatheter atrial septostomy, etc. At present, the commonly used puncture devices are mainly Brockenbrough atrial septal puncture needle and supporting Mullins puncture sheath system (St Jude Medical Inc). Other rare puncture...

AI Technical Summary

Problems solved by technology

There are major defects in the above three instruments and methods, which make it difficult to popularize and apply clinically.

1. The above three methods must enter the right ventricular septum through the superior vena cava approach, which makes it difficult to control the positioning and puncture direction when puncturing the ventricular septum; 2. The Brockenbrough puncture needle is a metal hollow needle, which is hard and difficult to bend. The position and angle of the right ventricular septum are poor; 3. Although the radiofrequency ablation puncture needle for puncturing the interatrial septum or the guide wire connected to the radiofrequency energy diathermy pen improves the puncture angle, radiofrequency ablation brings irreversible incidental effects on the puncture site and surrounding areas. Injury, long-term prognosis unknown

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