57 results about "Left subclavian artery" patented technology

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.

An embolic protection device adapted for placement in a left subclavian artery, a right subclavian artery and to cover a left and a right carotid artery, the device having a reduced state and an expanded state, the device comprising an expandable support structure, the expandable support structure comprising a frame, the frame further comprising a porous material, the frame defining the circumference of the porous material in the expanded state.

The invention relates to a branch artificial blood vessel bracket applied in surgery, which is provided with a terylene fabric blood vessel and a large bracket lined with a harder memory alloy wire; an artificial blood vessel of 1cm long without alloy wires is arranged at the near end and taken as a sewing ring; the branch artificial blood vessel bracket is characterized in that the near end of the large bracket is sewed by a small bracket; and the small bracket consists of the terylene fabric blood vessel and the lined soft memory alloy wire. The branch artificial blood vessel bracket creatively adds a branch bracket used for supporting the true lumen of left subclavian artery so as to keep smooth and complete left subclavian artery and the distal end of thoracic descending aorta, overcome the defects of the current surgery and avoid the coincidence of the left subclavian artery; and the distal end coincident hole is arranged between the innominate artery and the left common carotid artery, thus solving the most difficult point of the technique.

The present invention relates to aortic arch three collateral support blood vessels comprising an aorta support vascular that comprises an aorta ascenden section, an aortic arch section and an aorta section; the aorta support vascular also comprises three collateral artery support vasculars which are fixed respectively on an aortic arch section arc surface of the aorta support vascular and are formed into an five-way type. The three collateral artery support vasculars are corresponding respectively to an arteria anonyma, a left common carotid artery and a left subclavian artery. The invention is capable of greatly simplifying an operation process and greatly shortens the time of a deep hypothermia and a circulation arrest, which is characterized by not only omitting an inosculation between an artificial vascular graft and three branches of the aortic arch but also reducing bleeding rate and operation risk. In an operation, the invention changes an operation method from a partial blood vessel replacement plus partial endovascular repair to a complete endovascular repair.

The invention discloses a covered stent for an aortic dissection surgery, a delivery device and a use method thereof. The stent comprises a main body, wherein the main body decreases progressively from the heart near end with a large diameter to a far end with a small diameter, and the superior border of the middle piece of the main body is a rotary island; a tectorial membrane is arranged except the rotary island, and the two ends of the main body and the rotary island are provided with positioning marks. The delivery device comprises a delivery sheathing canal, a suture and a traction guide wire, wherein the suture is sewn on the outer side surface of the covered stent, and the two side edges of the covered stent at the near end of the left subclavian artery are sewn up by the suture; the stent is closed up to be in a semi-contraction state by the traction guide wire through the suture, and the covered stent is closed up and wrapped in the delivery sheathing canal; the delivery sheathing canal is provided with a steeple, and the far end of the traction guide wire penetrates through the handle of the delivery sheathing canal and is fixed. The covered stent for the aortic dissection surgery is used for a dissecting aneurysm surgery of the lesser curvature side of aortic arch and an interventional minimally invasive surgery of an aortic dissection near the brachiocephalic trunk, so that the trauma of a thoracotomy is avoided, and the athe lumen crevasse occlusion is directly implemented.

A method of implanting an aortic stent comprising steps of: putting a main tube on a metal guide wire; moving the main tube along the metal guide wire to the descending aorta, the main tube is constrained by a first cover, and first and second tube bifurcations are branched from the main section; removing the first cover; inserting a second and third metal guide wire through the first tube bifurcation into the ascending aorta and branchiocephalic artery respectively; a first and a second tube branch moving into the ascending aorta and the branchiocephalic artery respectively; inserting a fourth and fifth metal guide wire through the first tube bifurcation into the ascending aorta and branchiocephalic artery respectively; a third and a fourth tube branch moving into left common carotid artery and the left subclavian artery respectively; removing a second cover constraining said tube branches.

A total aortic arch reconstruction graft, including

• • a) a first, hollow cylindrical segment in the shape of an aortic arch and adapted to be joined to a patient's ascending aorta, and including three side hollow cylindrical branches in communication therewith and adapted to be joined to a patient's left subclavian artery, left common carotid artery and innominate artery, respectively, and a fourth hollow cylindrical branch adapted to be joined to a heart-lung machine;
  • b) a second, hollow cylindrical segment having a first end being joined to the second end of the first segment, and a second end adapted to be inserted into the descending aorta of a patient, the second segment having an expandable outer wall covered with an expandable open-mesh stent having means for attaching the second segment to an internal surface of a patient's descending aorta,
  • c) a collar having a diameter slightly larger than the diameter of said first segment, the collar located at a juncture where the first end of the second segment is joined to the second end of the first segment, with the collar having means for attachment to the open end of a patient's descending aorta. A surgical procedure for total replacement of the aortic arch of a patient is also disclosed.

The invention provides an intraoperative support conveying system and an intraoperative support system. An intraoperative support comprises a main support and a side supporting support arranged on the main support and stretching outwards. The intraoperative support conveying system comprises a main lining and a side supporting lining arranged on the main lining. The side supporting support is configured to be arranged on the side supporting support in a sleeving mode, the main support is configured to be arranged on the main lining in a sleeving mode, and the side supporting lining is arranged on the main lining in a swing mode to synchronously drive the side supporting support to swing relative to the main support. By the arrangement of the side supporting lining capable of swinging relative to the main lining, the side supporting support can synchronously swing relative to the main support, the side supporting support is aligned with the left subclavian artery to be easily implanted during an operation, it is avoided that the time of freeing and suturing the left subclavian artery in thoracotomy operation is too long, so that postoperative complications are increased, then the operating difficulty of the operation is reduced, the operating time of the operation is shortened, and the adaptation disease range of the operation is widened.

The invention provides a composite type intraoperative stent system which comprises an artificial vessel capable of being anastomosed, a linear control released left subclavian artery covered stent vessel and a balloon-expandable type descending aorta covered stent artificial vessel; the artificial vessel is connected with the balloon-expandable type descending aorta covered stent artificial vessel; the left subclavian artery covered stent vessel is arranged at the connecting part of the artificial vessel and the balloon-expandable type descending aorta covered stent artificial vessel and communicates with the artificial vessel and the balloon-expandable type descending aorta covered stent artificial vessel; and the balloon-expandable type descending aorta covered stent artificial vessel is internally provided with a balloon. The composite type intraoperative stent system can shorten the operation time, reduces influence of deep hypothermic circulatory arrest on the coagulation function of a patient, lowers the difficulties of vascular anatomy and anastomosis and increase the success rate of an operation.

The invention discloses an arcus aortae stent graft vascular structure for the department of surgery. The structure comprises a first artificial blood vessel, a connecting ring and a second artificial blood vessel. The connecting ring is embedded into the exterior of one side of the first artificial blood vessel. A reflection portion is reserved at the connecting ring and the end of the first artificial blood vessel. The reflection portion is turned outwards to wrap the connecting ring to form the compound end. One end of the second artificial blood vessel is embedded at the compound end to form a connecting portion. A threading hole is formed in the peripheral side wall of the connecting ring. A first branch and a second branch are arranged on the periphery of the first artificial blood vessel. The first branch comprises a first forked portion for being connected with an innominate artery and a second forked portion for being connected with the left common carotid artery. The second branch is connected with a pump blood vessel and then disconnected with the left subclavian artery. The second artificial blood vessel is the stent graft artificial blood vessel, and the far end of the second artificial blood vessel is used for being connected with the thoracic descending aorta.

The invention belongs to the crossed field of medicine and engineering, and relates to the production and manufacturing of a novel stent for treating type B aortic dissection. An aortic stent is of aconical structure; the proximal end is completely covered by a film coating stent; no metal bare stent is used; a material capable of slowly expanding when meeting blood covers the outer side of the film coating stent; the 1 to 2cm position, near the big bent side, of the stent is formed by small woven V-shaped stent units through connection; the remote end of the big bent side is formed by big woven V-shaped stent units through connection; the small bent side of the stent is formed by small V-shaped stent units through connection. The aortic film coating stent system can adapt to the anatomical structure of the Stanford type B aortic dissection, particularly the Stanford type B aortic dissection involving with left subclavian artery due to proximal anchoring area deficiency; a breaking opening of the aortic dissection can be completely isolated; the application to various normal and deformation blood vessels can be realized; the application range is wide; the stent customization is avoided; the mass production can be realized.

An aortic intracavity implant, which is provided with an anchoring zone at the near-end to reliably fix the implant and prevent the inner leakage, is provided. A membrane braid is used for replacing partial overlay film of the aortic intracavity implant, in the operation, a central region of the membrane braid is opposite to a left subclavian artery opening, under the pressure of aortic blood pressure the central region is inserted into the left subclavian artery, the top is sparse under the pressure effect to form an opening, thus the blood supply of the left subclavian artery can be maintained. A main body structure of the membrane braid is elliptic, and is divided into a central region and a peripheral region, no absolute boundary line is arranged between the central region and the peripheral region, the braid from the peripheral to the central region is gradually sparse. No leakage is provided at the peripheral region, and the central region is provided with an opening in the opening process. The membrane braid has no supporting effect on the aortic intracavity implant, and has the main effects: (1) guaranteeing the blood supply of main branch blood vessel after the implant isopened, and adding the anchoring zone; and (2) having no leakage at the peripheral region of the membrane braid, thus preventing the inner leakage.

Disclosed are methods and devices for isolating all three of the left subclavian, left common carotid and brachiocephalic arteries from embolic debris that might flow through the aortic arch, via a single access point. A system may include an elongate flexible tubular sheath, having a proximal end and a distal end, and an inner member extending through the sheath and moveable relative to the sheath. A left subclavian element may be supported by the inner member. A filter membrane may be configured to isolate the aorta from the brachiocephalic, left common carotid and left subclavian arteries when the left subclavian element is expanded within the left subclavian artery and the sheath is retracted to expose the membrane. The left subclavian element may include a self expandable frame, whichmay carry a left subclavian filter.

The invention discloses an aortic arch-thoracic aorta slide regulation pre-fenestration covered stent. The aortic arch-thoracic aorta slide regulation pre-fenestration covered stent is characterized by comprising a cylindrical tubular first covered stent body, a second covered stent body, a rotating stent, a truncus brachiocephalicus branch vessel port covered stent body and a left subclavian artery branch vessel port covered stent body; the rotating stent is formed by connecting a cylindrical front covered stent segment, a front bare stent segment, a covered stent segment, a rear bare stent segment and a rear covered stent segment coaxially. A left common carotid artery branch vessel port is arranged on the side wall of the covered stent segment, the truncus brachiocephalicus branch vessel port covered stent body is inserted in the front bare stent segment, and the left subclavian artery branch vessel port covered stent body is inserted in the rear bare stent segment. The proximal endof the rotating stent is slidably connected with an annular rear sliding track of the first covered stent body through a circular front slide in a sleeving mode, and the distal end of the rotating stent is slidably connected with an annular front sliding track of the second covered stent body through an annular rear slide in a sleeving mode. The aortic arch-thoracic aorta slide regulation pre-fenestration covered stent has the advantages such as novel structure, simple manufacturing process, short operation time and small technical difficulty during the operation.

The invention relates to an integrated thoracic aortic branch support which comprises a main support and a first branch support arranged on the sidewall of the main support, wherein the main support is communicated with the first branch support; the main support and the first branch support are composed of memory alloy wire frames and tectorial membranes fixedly coating the frames. The first branch support is arranged on the main support, a most important branch artery channel is reserved when the important arteries are coated, so as to enable the thoracic aortic support to achieve the left side of the right brachiocephalic trunk opening, the first branch support carried by the main support is placed in the left common carotid artery, or conducting bridging to the right common carotid artery and the left common carotid artery, and conducting bridging to the left common carotid artery and the left subclavian artery firstly and then covering all the arcus aortas by the support, the first support is placed in the right brachiocephalic trunk, so that the support can also be used for lesion near the aortic arch, exaggerated thoracic surgery is avoided, and the surgical risk and medical cost of a patient are decreased accordingly.

The invention discloses an intraoperative brain protection device which comprises an elastic support and a filter screen. The elastic support can expand on the inner wall of a blood vessel of the aortic arch and is attached to the inner wall of the blood vessel of the aortic arch, the elastic support is of a ring-like structure defined by elastic metal materials, and the far end and the near end, in the axial direction, of the ring-like structure tilt upwards so that the intra-operative brain protection device can be fixed in the aortic arch; the filter screen is located in an area defined by the elastic support, and the two ends of the filter screen are connected with the far end and the near end of the ring-like structure respectively so as to prevent thrombus generated in the operation from entering the head artery. The protection device adopts the left subclavian artery approach, and compared with a traditional femoral artery protection device, the influence that other femoral artery approach instruments jointly occupy the femoral artery is reduced, the operation effect is guaranteed, and popularization and application of the intraoperative brain protection device in the technical field of medical instruments are facilitated.

A disclosed apparatus or method can include or use a non-transluminally implantantable blood pump housing, which can be sized and shaped to be implanted at an aortic valve of a human subject, the pumphousing can include: a pump housing cross-sectional profile size that is larger than is passable via a blood vessel of the human subject; and a power connection, configured for being electrically connected to an intravascular lead that is sized and shaped to extend from the pump housing through a subclavian artery of the human subject.

The present invention provides a perfusion type double balloon for aortic occlusion. The segmented double balloon is used to position the first balloon in the upper half region between the lower border of the left subclavian artery and the celiac trunk, which can Block the proximal aorta to minimize blood loss; the second balloon is positioned in the lower half of the area between the inferior edge of the renal artery and the bifurcation of the iliac artery, allowing blood loss to be isolated between the celiac trunk and the renal artery , to selectively perfuse important organs such as bilateral lower limbs; that is, to achieve selective fluid perfusion to non-injured related areas, and to solve the problem of organ and limb ischemia.

The invention provides a four-branch artificial blood vessel for arcus aortae portion replacement perfusion. The artificial blood vessel comprises a body artificial blood vessel for introducing blood for perfusion and a brachiocephalic artery branch artificial blood vessel, a left common carotid artery branch artificial blood vessel and a left subclavian artery branch artificial blood vessel which are communicated with the body artificial blood vessel. An arterial perfusion branch artificial blood vessel communicated with extracorporeal circulation is further arranged on the body artificial blood vessel. Perfusion can be performed on the bilateral whole brain and the whole body during operation, the brain perfusion during operation during profound hypothermia circulation arrest is ensured to the maximum extent, postoperative neurological complications can be reduced, the operation technique can be simplified, and the operation time is shortened, so that the purposes of improving the operation success rate and reducing related operation complications are achieved.