39 results about "Septal formation" patented technology

The present invention relates to devices for closing a passageway in a body, for example a patent foramen ovale (PFO) in a heart, and related methods of using such closure devices for closing the passageway. The method includes introducing a mechanical closure device into an atrium of the heart and transeptally deploying the closure device across the interatrial septum to provide proximation of the septum secundum and septum primum.

The present invention provides for therapeutic treatment methods, devices, and systems for the partial or complete closure or occlusion of a patent foramen ovale (“PFO”). In particular, various methods, devices, and systems for joining or welding tissues, in order to therapeutically close a PFO are described. In yet another aspect of the invention, various methods, devices, and systems for the penetration of the interatrial septum enabling left atrial access are also provided.

A method of locating the fossa ovalis in a patient by locating the His bundle, plane of the interatrial septum, and coronary sinus ostium in a patient, and thereafter locating the fossa ovalis on the basis of one or more predetermined distances between the fossa ovalis and the His bundle and the coronary sinus ostium. An apparatus for locating the fossa ovalis and performing a transseptal puncture is also provided.

The invention provides a medical device and a fixing mechanism of medical equipment. The medical equipment can be conveniently located at a target position in the body through the fixing mechanism toachieve corresponding implantation or interventional treatment of the medical equipment, and accordingly, the medical effect is improved. The medical equipment can be a lead-free pacemaker, and physiological pace-making on the heart by the pacemaker is conveniently realized. The fixing mechanism comprises a base and fixing member, the extension direction of the base is parallel to that of a presetobject, and the fixing member is arranged on the outer wall of the base and extends around the base; one end of the fixing member is connected with the outer wall of the base, and a gap is formed between the other end of the fixing member and the outer wall of the base. During actual use, the base is stressed to rotate along the extension direction of the fixing member, and drives the fixing member to rotate together; during rotation, the fixing member is directly inserted into a tissue or a blood vessel wall parallel to the base, so that the medical equipment can be fixed into the atrium, the ventricle, the precava or other blood vessels, or fixed onto the interventricular septum or the interatrial septum.

A balloon catheter for interatrial septum dehiscence including an expandable and contractible balloon, and a shaft to which the balloon can be attached at the distal end thereof, wherein fixing members are provided at balloon mounting portions to be attached to the shaft. The fixing members are a pair of members in opposed relationship to each other at the ends of the balloon. The pair of members generally has an identical shape.

A transseptal insertion device suitable for facilitating precise and safe transseptal puncture of a cardiac interatrial septum (100) includes a sheath (12) that defines a lumen and has a distal end that is closest to the cardiac interatrial septum of a patient and a proximal end that is external to the patent, a balloon (14) that is connected to the distal end of the sheath (12) in which the balloon (14), when inflated, overhangs and extends past the distal end of the sheath, preventing accidental puncturing of the cardiac interatrial septum (100) and stabilizing the transseptal insertion device against fossa ovalis of the cardiac interatrial septum (100), and a dilator (16) that is positioned within the at least one lumen. The dilator (16) has a distal end and is designed to and is capable of precisely puncturing the cardiac interatrial septum without the use of a needle or other sharp instrument. The balloon (14) includes one or more ultrasound transceivers (26).

A method of identifying the fossa ovalis in a patient by positioning one or more electrodes against the tissue of the interatrial septum of the patient and acquiring unipolar and / or bipolar electrograms of the tissue of the interatrial septum while moving the electrodes to a plurality of positions against the tissue of the interatrial septum. The fossa ovalis is identified on the basis of unipolar voltage reduction, signal fractionation, broadened signal, reduced signal slew rate, reduced local myocardial impedance, increased phase angle and / or increased pacing threshold. An apparatus for identifying the fossa ovalis is also provided.

The invention relates to an interatrial septum puncture tool, which comprises an epitheca, an expander and a puncture needle, wherein the expander is pasted and arranged in the epitheca in a penetrating way, and the puncture needle is arranged in the expander in a penetrating way. The interatrial septum puncture tool is characterized in that the puncture needle comprises a head part, a neck part and a body part in sequential connection, the head part is a puncture needle head, the neck part is a tight spiral fine steel wire with at least one micro fine steel wire penetrating at the inner side, and the body part is a long soft steel wire. The tool has the advantages that the design is reasonable, and in addition, the condition of left atrium inner wall puncture injury by the needle head caused by puncture positioning inaccuracy or excessive puncture acting force can be avoided.