30 results about "Innominate Arteries" patented technology

Methods are provided for partial aortic occlusion for cerebral perfusion augmentation in patients suffering from global or focal cerebral ischemia. The descending aorta is accessed. A device is then located downstream from the takeoff of the brachiocephalic artery. The device is operated to at least partially obstruct blood flow in the aorta during systole and diastole. A physiologic parameter can be measured. The device can then be adjusted to modify the degree of obstruction based on the measured physiologic parameter.

A cardioplegia catheter is configured to extend into the ascending aorta with a proximal portion of the shaft extending into a left chamber of the heart through a aortic valve and out of the heart through a penetration in a wall thereof. The cardioplegia catheter has an occlusion member configured to occlude the ascending aorta between the brachiocephalic artery and the coronary ostia. An arterial return cannula delivers oxygenated blood to the arterial system downstream of the occlusion member, while cardioplegic fluid is delivered through a lumen in the cardioplegia catheter upstream of the occlusion member to induce cardioplegic arrest.

A method for treating both sessile and mobile aortic atheroma is described. A radially expanding device, such as a stent or compliant cast, comprising a generally cylindrical member expandable between a compressed state and an enlarged state is provided. The cylindrical member has a proximal opening, a distal opening, a lumen therebetween, and at least one side opening in the wall of the generally cylindrical member. The methods comprise imaging the aorta to identify position and extent of atheroma. The stent is then advanced into the aortic arch and positioned so that the at least one side-opening is aligned with the takeoff of one or more of the right brachiocephalic artery, the left common carotid artery, or the left subclavian artery. The stent is expanded into contact with the endoluminal surface of the aorta and atheroma is trapped between the stent and the endoluminal surface of the aorta.

The stent graft system in accordance with the present invention has a trunk, a left subclavian tube, a left common carotid tube and a brachiocephalic tube. The trunk is tubular and expandable and has a descending end, an ascending end, a left subclavian mount, a left common carotid mount and a brachiocephalic mount, for receiving the aforementioned branch tubes that are elastic and self-expandable for respectively connecting the left subclavian artery, the left common carotid artery and the brachiocephalic artery to the trunk. With the above-described structure, the present invention allows fast determination of a suitable trunk and branch tubes for a patient and allows a medical institute to prepare compatible branch tubes and trunks for a composite stent graft system instead of numerous stent grafts of various combinations of differently sized tubular bodies and branches, wherein the former requires significantly less warehousing cost than the latter.

A medical device having a catheter and one or more expandable constricting / occluding members. The catheter is adapted for use with therapeutic or diagnostic devices, including an angioplasty / stent catheter and an atherectomy catheter. A first constrictor / occluder mounted at the distal end of the catheter is adapted for placement in a brachiocephalic or subclavian artery. A second constrictor mounted proximal to the first constrictor / occluder is adapted for placement in the descending aorta. Pressure measuring devices may be included, and filters may be used to capture embolic debris. Methods of using the devices for preventing distal embolization during extracranial or intracranial carotid procedures or vertebral artery procedures by augmenting collateral cerebral circulation by coarctation of the aorta to enhance reversal of blood flow in an internal carotid artery, an external carotid artery, and / or a common carotid artery toward the subclavian artery are disclosed.

The invention provides a medical device having a catheter and one or more expandable constricting / occluding members. The catheter is adapted for use with therapeutic or diagnostic devices, including an angioplasty / stent catheter and an atherectomy catheter. The constrictor / occluder is mounted at the distal end of the catheter. Manometers may be mounted distal to one or more constrictors for measuring pressure distal to the constrictor(s). Methods of using the devices for preventing distal embolization during extracranial or intracranial carotid procedures or vertebral artery procedures by reversing blood flow in an internal carotid artery, an external carotid artery, and / or a common carotid artery toward the subclavian artery are disclosed.

The invention provides an ascending aorta repair stent anchored by innominate artery, comprising an ascending aorta stent segment and an innominate artery stent segment, wherein an innominate artery portion of the stent is first released and a body portion is then released; the distal end opening of the body portion facing the distal end of the aortic arch lumen, and the body portion of the stentcovers the dissection at the primary rupture of the ascending aorta. When the release is completed, the main body terminates above the junction of the sinus canal. The longitudinal beam structure is made of a temperature-dependent shape memory metal material extending to the great curvature side of the aortic arch of the innominate artery and to the minor curvature side of the aortic arch, and isreleased so as to satisfy the individualized ascending aortic anatomical arc of different patients to abut against the aortic wall. The stent is anchored only according to the special anatomical shapeof the ascending aorta and the innominate artery and the memory metal longitudinal beam structure. Used in patients with type A aortic dissection in the acute phase of surgical contraindication whenwaiting for the transitional phase of surgery for patients with high surgical risk of acute type A aortic dissection to provide follow-up surgical treatment opportunities.

A method of delivering a embolic protection unit to the aorta arch of a patient. The method comprising, introducing a catheter from brachiocephalic artery or through an incision in a wall of the ascending aorta, the catheter comprising an embolic protection unit having an off-center connection point. Advancing the embolic protection unit in a downstream direction from the catheter. Expanding the embolic protection unit in the aorta arch to cover said ostia. Delivering a medical device into the ascending aorta while the embolic protection unit is hold by the catheter covering the ostia.

The invention relates to a quick connecting type four-branch artificial blood vessel for irrigation. The quick connecting type four-branch artificial blood vessel comprises a main body artificial blood vessel, a brachiocephalic artery branch artificial blood vessel, a left common carotid secondary branch artificial blood vessel and a left subclavian artery secondary branch artificial blood vessel,wherein the brachiocephalic artery branch artificial blood vessel, the left common carotid secondary branch artificial blood vessel and the left subclavian artery secondary branch artificial blood vessel are connected with the main body artificial blood vessel in a communicating manner. The quick connecting type four-branch artificial blood vessel is characterized in that left-hand threaded typeconnectors are respectively arranged at the far end of the left common carotid secondary branch artificial blood vessel and the far end of the left subclavian artery secondary branch artificial bloodvessel; and an intra-arterial infusion branch artificial blood vessel which communicates with the outer circulation of a connector is also arranged on the main body artificial blood vessel. The quickconnecting type four-branch artificial blood vessel disclosed by the invention is ingenious in structure and reasonable in design, so that the problem that in the prior art, in an aortic arch replacement operation, cerebral perfusion is insufficient, and nervous system complications are liable to generate can be solved; the quick connecting type four-branch artificial blood vessel can be quickly and reliably fixed, the situation that time is consumed for suturing is not needed, the operation is quick and convenient, the operation time can be greatly saved, the operation procedure difficulty isreduced, and the survival rate of a patient is increased.

The techniques of this disclosure generally relate to a modular stent device that is deployed into the ascending aorta via femoral access. The modular stent device is a base or anchor component to which additional modular stent devices can be attached to exclude diseased areas of the aorta while at the same time allowing perfusion of the brachiocephalic artery, the left common carotid artery, and / or the left subclavian artery.

An ascending aorta repair stent anchored by the innominate artery, including the ascending aorta stent segment and the innominate artery stent segment, the innominate artery part of the stent is first released, and then the main part is released, and the distal opening of the main part is facing the aortic arch lumen far away end, the main part of the stent covers the primary tear of the ascending aorta with dissection. After release, the body portion terminates above the sinotubular junction. The longitudinal beam structure is made of temperature-dependent shape-memory metal materials extending to the greater curvature of the aortic arch and the lesser curvature of the aortic arch that continue to the innominate artery. Stick to the aortic wall. The stent is anchored only by the special anatomical shape of the ascending aorta and the innominate artery and the memory metal stringer structure. It is used for patients with type A aortic dissection who are waiting for surgery when there are surgical contraindications in the acute stage, and provides opportunities for follow-up surgical treatment for patients with acute type A aortic dissection with high surgical risk.

Embolic protection devices useful for filtering emboli during interventional cardiac, vascular, or other procedures are described. The device can include first and second expandable mesh filters having open and closed ends. The first filter is attached to a catheter at its closed end. The second filter is attached to a steerable guide wire at its closed end. The second filter includes a cinching wire circumferentially attached to the filter. The filters are deployed in separate vessels, such as the brachiocephalic artery and the left common carotid artery. A procedure is performed, and the filters trap any emboli travelling through the path of the filters. At the end of the procedure, the second filter is closed using the cinching wire, and retracted into the first filter. Both the first and second filters are collapsed into a sheath and removed from the body with along with any emboli trapped in the filters.

A prosthetic assembly configured for endovascular placement within an aortic arch and method of use thereof. The prosthetic assembly includes a proximal aortic stent-graft prosthesis configured to be positioned within a proximal portion of the aortic arch adjacent to the brachiocephalic artery, a distal aortic stent-graft prosthesis configured to be positioned within a distal portion of the aortic arch adjacent to the left subclavian artery, a first branch stent-graft prosthesis configured to be positioned within the brachiocephalic artery and a second branch stent-graft prosthesis configured to be positioned in one of the left common carotid and the left subclavian artery. When deployed, a proximal end of the first branch stent-graft prosthesis is disposed within a lumen of the proximal aortic stent-graft prosthesis to proximally displace the ostium of the brachiocephalic artery. When deployed, a proximal end of the distal aortic stent-graft prosthesis is disposed within the distal end of the proximal aortic stent-graft prosthesis to form an overlap between the proximal and distal aortic stent-graft prostheses. The overlap is relatively increased by the first branch stent-graft prosthesis proximally displacing the ostium of the brachiocephalic artery.