5 results about "Arterial occlusions" patented technology

Improved systems including rBGCs improved by means of stiffness; working zones and optimized transition zones can traverse the aortic arch into the common carotid and vertebral arteries from a radial approach including navigation of tortuous and individuated anatomical challenges. Mechanical Thrombectomy improved by balloon occlusion prevents thrombus showers and follows 10 years of interventional cardiology and diagnostic use of improved radial approach (TRA) with better systems, making trans-femoral (TFA)less safe and effective than this revised treatment paradigm, unexpectedly better than literature predicted in early parts of the decade. Likewise, carotid stenting may be performed during these intracranial arterial occlusion procedures without swapping out guide catheters as required by the prior art.

The application discloses a lower limb arterial occlusion segment sharp breakthrough positioning catheter, which comprises a catheter, one end of the catheter is in sealed connection with one end of a joint, the other end of the joint is provided with a guide wire inlet, pressure applying ports A and B are arranged along the longitudinal direction respectively, balloon pressure cavities are arranged on the upper and lower surfaces of the catheter respectively, the balloon pressure cavities are communicated with balloons A and B respectively, and the pressure applying ports A and B are communicated with the balloon pressure cavities; when the sharp breakthrough is performed on the occluded blood vessel segment, the breakthrough point is located at the center of the fiber cap, the sizes of the balloons A and B are controlled by increasing or decreasing the pressure respectively, then the balloons A and B press the guide wire cavity, the angle of the guide wire located in the guide wire cavity is changed, the breakthrough position can be better aligned, after the breakthrough, the front end of a wedge-shaped catheter is applied to perform the breakthrough, the blood flow is smoothly opened after the catheter is introduced, the blood flow opening is more in line with the operation principle, the blood vessel injury caused by the sharp breakthrough is reduced, the operation difficulty is reduced, and the operation success rate is improved.

This invention discloses a method, system, terminal device, and medium for assessing upper limb arterial occlusion based on a portable multi-camera device, relating to the field of arterial occlusion assessment technology. The method includes: acquiring a reference signal, a left-hand pulse wave signal, and a right-hand pulse wave signal using a portable multi-camera device, with the reference signal, left-hand pulse wave signal, and right-hand pulse wave signal synchronized at the acquisition time; extracting features from the reference signal, left-hand pulse wave signal, and right-hand pulse wave signal to obtain signal transmission time difference features and signal waveform similarity features; inputting the signal transmission time difference features and signal waveform similarity features into a pre-trained assessment model to obtain the upper limb arterial occlusion assessment result. This invention uses a portable multi-camera device to simultaneously acquire physiological signals from three locations on the human body, utilizing signal transmission time difference features and signal waveform similarity features to easily, conveniently, and accurately assess the occlusion status of upper limb arteries.

The invention belongs to the technical field of medical instruments, and particularly relates to an intravascular device for treating peripheral artery occlusion and a using method.The intravascular device comprises a conveying pipe, a cutting part and a positioning part, the cutting part and the positioning part are arranged in one end of the conveying pipe, one end of the cutting part can stretch out of the conveying pipe, and the cutting part rotates with the central axis as the center for cutting; the positioning part is arranged between the cutting part and the inner wall of the conveying pipe, one end of the positioning part can extend out of the conveying pipe, and an inner coating and an outer coating which are overlapped are arranged on the outer wall of the end, extending out of the conveying pipe, of the positioning part; the defects in the prior art are overcome, the operation difficulty of the arterial occlusion lesion can be reduced, the clinical requirements for repairing the vascular endothelium, preventing restenosis and reducing thrombosis after the arterial occlusion lesion is opened are integrally met, and complications such as flow-limiting dissection and far-end embolism caused by a medicine-carrying balloon or a support can be avoided.