18 results about "Arterial occlusion" patented technology

An artery can be occluded by implanting an occlusion implant within a subintimal space within a wall of the artery. As an example, a catheter having a side port just proximal of an inflatable balloon disposed near a distal end of the catheter can be advanced through the artery to a site at which an occlusion is desired. The inflatable balloon can be inflated and a guidewire can be advanced through a lumen of the catheter, out of the side port and into a subintimal space of the artery, with the inflated inflatable balloon guiding the guidewire towards the artery wall. An occlusion implant can be advanced over the guidewire into the subintimal space and the guidewire can be withdrawn, leaving the occlusion implant positioned within the subintimal space.

An organ can be cooled to minimize ischemic tissue damage from a vascular occlusion by a thrombus or dissection. A catheter including a thermal member can be used to introduce cold fluid downstream from an arterial occlusion to cool tissue affected by the occlusion. This is particularly useful to minimize neurologic damage from a thrombotic stroke.

An integrated multifunctional vascular intervention catheter sheath belongs to the technical field of medical equipment and comprises a sheath tube body and a balloon, a cavity tube is arranged in the sheath tube body, and a mounting cavity is arranged between the outer side of the cavity tube and the inner side of the sheath tube body; a guide tube is arranged on one side of the upper end of the sheathing canal body, a camera catheter, an illuminating lamp catheter, a saline flushing catheter and a standby catheter are installed in the installation cavity, a balloon control tube is installed on the other side of the sheathing canal body, and a fixing hole in the lower side of a balloon is fixedly formed in the outer side of the sheathing canal body. The balloon upper side fixing hole is fixedly formed in the outer side of the lower end of the sheath tube body and the balloon control tube. The medical balloon can be used in cooperation with a camera, a lighting lamp, a washing device, a suction device and other devices, the functions of imaging in a blood vessel cavity, removing blood flow interference, spraying medicine and sucking out contents can be achieved, lesion fragments and sprayed medicine generated in the opening process of arterial occlusion disease blood vessels and the like can be removed in time, and the balloon can expand narrow blood vessels or block operation openings; and the technical support is provided for the vascular interventional operation.

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 utility model discloses an artery occlusion rotary cutting opening device, which belongs to the technical field of medical instruments and comprises a grinding head main body, a rotary cutting bulge is arranged at the end part of the grinding head main body, a rotary grinding surface is arranged on the side surface of the grinding head main body, and plaques in an artery are subjected to rotary cutting and rotary grinding through the rotary cutting bulge and the rotary grinding surface; the first driving part is used for driving the grinding head main body to rotate; and the second driving part is used for driving the grinding head main body to feed in a spiral feeding manner. The grinding head of the rotary cutting opening device is provided with the rotary cutting protrusion and the rotary grinding face, so that the grinding head can conduct rotary cutting operation and rotary grinding operation at the same time, rotary cutting is used for processing and cutting soft plaques, rotary grinding is used for grinding hard plaques, universality of the device is effectively enhanced, and the rotary cutting opening device is suitable for more use scenes.

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.

Disclosed is a direction-adjustable tunneling device for opening arterial occlusion, comprising: a working part, comprising a drill bit, a propelling system, and a catheter, wherein the drill bit is configured for cutting and rotationally grinding a plaque to open the artery when rotating, the propelling system is configured for driving the drill bit to advance and rotationally cut the plaque uniformly, and the catheter is configured for providing an agent for the drill bit and sucking plaque debris; and an outer sheath surrounding the working part, wherein the outer sheath can adjust the advancing direction of the working part, and is further configured for supporting and fixing the working part. The present invention can satisfy the clearing requirement of blood vessels with varying morphologies, plaques of different hardness, and different directions. Also, the present invention can meet the requirements of clinicians for opening a blood vessel and removing the plaque in one step, thus improving the efficiency of opening blood vessels, innovating the convenience of device operation and the completeness of plaque clearance, and featuring advantages of greatly reduced operation difficulty, reduced operation duration, reduced or eliminated needs for in-vivo stent implantation, increased long-term patency rate, and the like.

A system for traversing an arterial occlusion in an artery includes a housing sized to fit in a palm of a user, an elongate drive tube configured to be rotated by the housing, the drive tube including an axially extending passage, a cylindrical member, configured to be rotationally coupled to the drive tube, such that a distal tip of the cylindrical member may be delivered to a location adjacent the arterial occlusion when the cylindrical member is coupled to the drive tube, and wherein grasping and activating the housing such that the drive tube is rotated, thereby causes the distal tip of the cylindrical member to be rotated, the rotation of the distal tip including at least a component of linear oscillation.

The invention provides an artery occlusion device. The artery occlusion device comprises a control handle, a hollow catheter, a metal framework, an occlusion film, a traction structure and a guide device, the control handle freely adjusts the unfolding size of the plugging device by controlling unfolding or folding of the metal framework and the plugging film, the plugging device adapts to target blood vessels with different diameters, and therefore the plugging function is achieved. According to the artery plugging device, the plugging effect and adaptability are improved, the production technology is optimized, the production cost is reduced, wounds to blood vessels are reduced, the recovery time is shortened, the occurrence rate of complications is reduced, the structure is simple, the requirement for materials is low, and the technology is easy to achieve.

Described herein is a chemoembolization therapy, which combines therapeutic effects of peripheral arterial occlusion with the local administration of an anti-cancer agent. A particle or microsphere occludes the arteries providing blood flow to the tumor, resulting in tumor oxygen deprivation. The anti-angiogenic agent is an anti-cancer drug, as described herein.

A method is provided for treating a plaque-based arterial occlusion in a carotid artery of a subject. The method includes performing a carotid endarterectomy on the subject; determining the levels in the subject of a plurality of biomarkers Bi∈[B1, . . . , Bn], wherein n ≥2; and performing light therapy on the subject if any of the plurality of biomarkers Bi has a level xi in excess of a corresponding threshold value ti.

The present invention relates to the technical field of traditional Chinese medicine, and in particular to a traditional Chinese medicine external application package composition and application for reducing complications after transradial coronary intervention. The composition of the present invention is composed of Lobelia chinensis, honeysuckle, earthworm, Rubescens rubescens, Scrophularia ningpoensis, Chinese angelica, Trillium gracile, Citrus aurantium, and liquorice. The above-mentioned medicines are used together to achieve the effects of clearing away heat and detoxifying, promoting blood circulation and removing blood stasis, and promoting qi and relieving pain. The composition is closely related to the TCM pathogenesis of complications such as arterial occlusion and hand ischemia after transradial coronary intervention, which are caused by toxic invasion of collaterals and blood stasis. The composition can effectively reduce the incidence of arterial occlusion after transradial coronary intervention, alleviate the degree of palm swelling and hand ischemia symptoms after surgery, and reduce the degree of pain in the patient's postoperative wound site.

An organ can be cooled to minimize ischemic tissue damage from a vascular occlusion by a thrombus or dissection. A catheter including a thermal member can be used to introduce cold fluid downstream from an arterial occlusion to cool tissue affected by the occlusion. This is particularly useful to minimize neurologic damage from a thrombotic stroke.

The utility model provides a double-end guide wire for lower limb artery CTO interventional therapy. A first guide wire head end and a second guide wire head end are arranged at the two ends of a push rod mandrel respectively. The first guide wire head end comprises a guide wire core, a metal wire, a first spring ring sheath and an outer sheath, one end of the guide wire core is connected with the push rod mandrel, the first spring ring sheath is sleeved on the guide wire core, a gap is reserved between the tail end of the first spring ring sheath and the tail end of the guide wire core, the outer sheath is arranged at the tail end of the first spring ring sheath, and the metal wire is arranged in the outer sheath. Free metal wires are arranged on the end surface of the inner side of the outer sheath; the structure of the second guide wire head end is the same as that of the first guide wire head end, or the second guide wire head end is a second spring ring protective sleeve arranged on the push rod mandrel in a sleeving mode, and the tail end of the second spring ring protective sleeve is conical. In the retrograde puncture and opening process of the artery occlusion section, the two ends of the guide wire can serve as working ends, and the operation that after the guide wire is withdrawn, the direction is turned, and a far-end blood vessel is subjected to super-selection again is avoided. The device is suitable for various vasculopathy of iliac artery, femoral popliteal artery and the like.

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.

A system for generating an estimated pulmonary artery occlusion pressure (PAOP) measurement on an ongoing basis, without occlusion of pulmonary arteries, includes one or more sensing devices that produce one or more sensor signals. The system estimates the PAOP measurement based upon the one or more sensor signals from the one or more sensing devices, and displays the estimated PAOP measurement via a display device. In some examples, the system displays an indication of whether the estimated PAOP measurement of a patient is elevated, based upon the estimated PAOP measurement exceeding a predetermined threshold.

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.