50 results about "Ascending aorta" patented technology

A prosthesis assembly includes a stent frame that is expandable and configured for being positioned in the ascending aorta, and a receiving socket positioned within a proximal end of the prosthesis assembly. The receiving socket defines a recess for allowing flowthrough of blood into the stent frame. The receiving socket is further configured for selectively receiving a heart valve assembly for replacing a native heart of a patient or maintaining a mode of operation where the socket is empty and blood flows through the socket into the stent frame.

The utility model provides an integrated stent-type artificial blood vessel which comprises an artificial blood vessel part comprising an artificial blood vessel main branch used for being arranged corresponding to an ascending aorta of a human body; the covered stent comprises a covered stent trunk and a left subclavian artery branch arranged beside the covered stent trunk and communicated with the covered stent trunk; the bendable connecting tube section is arranged between the artificial blood vessel part and the covered stent, the bendable connecting tube section comprises a main tube section and a side short tubular joint which is arranged on the side of the main tube section and communicated with the main tube section, and in the main blood flow direction of the artificial blood vessel, the near end of the main tube section is connected with the main branch of the artificial blood vessel; the far end of the main pipe section is connected with the near end of the artificial blood vessel main branch, and the axial height of the side short pipe-shaped connector is smaller than that of the left subclavian artery branch. The number of branch arteries needing to be dissociated in an operation is reduced, then dissociation anastomosis time is saved, circulation stopping time is shortened, protection on brain tissue is enhanced, and postoperative rehabilitation of a patient is facilitated.

An integrated stent-type artificial blood vessel, comprising: an artificial blood vessel portion (1), wherein the artificial blood vessel portion (1) comprises a main artificial blood vessel trunk (11), and the main artificial blood vessel trunk (11) is configured to be arranged corresponding to an ascending aorta of a human body; a covered stent (2), wherein the covered stent (2) comprises a main covered stent trunk (21) and a left subclavian artery branch trunk (22) provided on the side of and in communication with the main covered stent trunk (21); and a bendable connecting tube segment (3), provided between the artificial blood vessel portion (1) and the covered stent (2), wherein the bendable connecting tube segment (3) comprises a main tube segment (31) and a short side tubular connector (32) provided beside and in communication with the main tube segment (31). In a primary blood flow direction of the artificial blood vessel, the proximal end of the main tube segment (31) is connected to the main artificial blood vessel trunk (11), the distal end of the main tube segment (31) is connected to the proximal end of the main covered stent trunk (21), and the short side tubular connector (32) is connected to a short covered tubular stent (23).

The invention provides a cannula capable of effectively and smoothly conveying blood from the ascending aorta while reducing the diameter of the cannula. And the front end part of the cannula is retained in the ascending aorta and is used for smoothly conveying blood supplied by the in-vitro artificial membrane lung from the ascending aorta. The cannula comprises a forward blood backflow part (2) and a blood delivery tube (4), wherein the forward blood backflow part (2) is arranged at the front end of the blood delivery tube (4). A guide wire tube (5) which longitudinally extends from a base end part to a front end part is arranged at a near-center position of the axial length in the smooth blood feeding sleeve (1). The blood delivery tube (4) is a catheter arranged on the base end side and used for being connected with the in-vitro artificial membrane lung. The forward blood return unit (2) reverses blood from a reverse direction to a forward direction and guides the blood to the base end side, and is provided with a first blood return tube (6) provided on the base end side and a second blood return tube (7) provided on the tip side. The second blood return tube (7) has side holes (7a, 7b), and a part of an approximately hemispherical bag body (8) is adhered to the inner portion of the tip of the second blood return tube (7).

Apparatus and methods are described including implanting an aortic pressure-loss-reduction device in a subject's ascending aorta. A frame of the device includes a first set of sinusoidal struts disposed between a downstream end of an upstream anchor and an upstream end of the intermediate portion, the sinusoidal struts being shaped to form a folded portion between the downstream end of the upstream anchor and the upstream end of the intermediate portion. The frame includes a second set of sinusoidal struts disposed between an upstream end of a downstream anchor and a downstream end of the intermediate portion, the sinusoidal struts being shaped to form a folded portion between the upstream end of the downstream anchor and the downstream end of the intermediate portion. Other applications are also described.

The subject of the invention is a delivery system for delivering a self-expanding endoluminal prosthesis to the patient's ascending aorta and aortic valve, the system comprising: - an inner tube (33), extending along a longitudinal Y axis of the delivery system (100), from an atraumatic distal tip (27) to a handle (37); - a metal tube (32), slide-fitted on the inner tube (33), and extending from the internal space of the distal tip (27) to a handle (37); - an outer tubular catheter shaft (22) slide-fitted on the metal tube (32), the catheter shaft (22) is brought out from the handle (37) and is terminated by a capsule (20), containing inside the radially compressed on the metal tube (32), self-expanding endoluminal prosthesis (1) having defined construction and covered at least partially by a coating (16), - the capsule (20) has closed position when is closed by the tip (27) and has open position when the capsule (20) and the tip (27) are displaced relative to each other; wherein the distal part of the metal tube (32) is equipped with receiving means (41, 42) on which the distal locking means (7) of prosthesis (1) are removably embedded and blocked in the inner space of the tip (27) and the delivery system (100) comprises also removable holding means (45, 45') retaining the proximal locking means (9) of the prosthesis (1), so that when the capsule (20) is in its fully open position, the prosthesis (1) is still maintained partially compressed, holding its crimping length.

A catheter device is disclosed comprising; an elongate sheath (503) with a lumen and a distal end for positioning at a heart valve (6), an embolic protection device (200) for temporarily positioning in the aortic arch for deflection of embolic debris from the ascending aorta to the descending aorta, said embolic protection device is connectable to a transluminal delivery unit (130) extending proximally from a connection point (131), and having: a frame with a periphery, a blood permeable unit within said periphery for preventing embolic particles from passing therethrough with a blood flow downstream an aortic valve into side vessels of said aortic arch to the brain of a patient, and at least one tissue apposition sustaining unit (300, 350) extending from said catheter, into said aortic arch, and being attached to said embolic protection device at a sustaining point (502), for application of a stabilization force offset to said connection point at said embolic protection device, such as at said periphery, and for providing said stabilization force towards an inner wall of said aortic arch, away from said heart, and in a direction perpendicular to a longitudinal extension of said periphery, when said catheter device is positioned in said aortic arch, such that tissue apposition of said periphery to an inner wall of said aortic arch is supported by said force for improving stability and peripheral sealing. In addition related methods are disclosed.

The application discloses a multi-delivery-site asymmetric positioning cross-valve catheter, and particularly relates to the technical field of cross-valve catheters, which comprises an expansion piece, a guide sheath and movable pieces. The expansion piece is provided with through grooves penetrating through the peripheral wall, and the number of the through grooves is at least one; accordingly, the through grooves divide the expansion piece into at least two sub-pieces; one end of each of the sub-pieces is connected through a closed ring-shaped part, and the other end of each of the sub-pieces is fixed with a single movable piece; the number of the movable pieces is matched with the number of the sub-pieces; each of the sub-pieces is provided with an expansion part, and the expansion part comprises at least four mechanical sub-pieces; the head of the guide sheath is arranged in the hollow interior of the closed ring-shaped part, and the middle part of the guide sheath is provided with a hole through which a cross-valve guide wire passes. The cross-valve catheter pushes the tail pipe of the sub-piece, so that the mechanical sub-pieces have different expansion sizes, the outer sides of the mechanical sub-pieces are attached to the ascending aorta, the coaxiality of the distal end opening of the catheter and the expected cross-valve point is improved, and the catheter is stabilized.

Described herein are pumps that linearly reciprocate to assist with circulating blood within the body of a patient. Red blood cell damage may be avoided or minimized by such linear pump movement. The linearly reciprocating movement may also generate a pulsatile pumping cycle that mimics the natural pumping cycle of the heart. The pumps may be configured to reside at various body locations. For example, the pumps may be situated within the right ventricle, the left ventricle, the ascending aorta, the descending aorta, the thoracic aorta, or the abdominal aorta. In some instances, the pump may be deployed within the venous circulation. In other instances, the pump may reside outside the patient.

The application provides an interventional ventricular auxiliary oxygen generation device, a blood flow channel crosses an aortic valve into a left ventricle from an ascending aorta, a blood inlet of the blood flow channel is located in the left ventricle, a blood outlet is located in the ascending aorta, a first conveying pipe and a second conveying pipe convey hydrogen peroxide and catalase into the left ventricle to generate oxygen and water through reaction, and a pumping unit pumps oxygen-rich blood in the left ventricle to the ascending aorta. The oxygen generation function is added to the ventricular auxiliary device, the oxygen-rich blood in the ventricle is pumped to the ascending aorta through the ventricular auxiliary device, which directly improves the myocardial hypoxia condition and helps the heart recover, and on the other hand, the oxygen-rich blood is pumped into the ascending aorta and directly participates in the systemic circulation, thereby directly and quickly improving the oxygen supply condition of the systemic circulation.

The present application relates to the field of assist devices and provides a left ventricular flexible assist device, wherein a catheter support of the device is arranged in a reflux catheter; a first opening is arranged at the top of the catheter support, a second opening is arranged at the bottom of the catheter support, and the side of the catheter support is a hollow structure; a trileaflet valve is fixedly connected to the inner side of the catheter support; a third opening is arranged at the top of the suction catheter, a fourth opening is arranged at the bottom of the reflux catheter, a fifth opening is arranged at the top of the reflux catheter, the third opening passes through the fourth opening and the second opening, and is fixedly connected to the bottom of the trileaflet valve; the support valve is arranged between the catheter support and the suction catheter; a blood discharge hole is arranged on the side of the reflux catheter, and a suction hole is arranged on the side of the suction catheter. The device provided by the present application can aspirate blood from the left ventricle during systole while avoiding the accidental aspiration of blood from the ascending aorta out of the body, and discharge blood into the ascending aorta during diastole while avoiding the accidental discharge of blood into the left ventricle.

The invention provides a medical implant, a medical system and a use method thereof, the medical implant comprises a first covered stent and a barb assembly, the first covered stent comprises a first stent body, a second stent body and a first positioning piece which are sequentially arranged in the direction from the near end to the far end; the first covered stent further comprises a first covering film, and the first covering film covers the first stent body, the second stent body and the near-end part of the first positioning piece; the first covering film is further provided with a first preset position and a second preset position, the first preset position and the second preset position are located between the first stent body and the second stent body, and the first preset position and the second preset position are staggered; the first preset position is used for forming a first window, the second preset position is used for arranging a barb assembly, and the barb assembly comprises barbs. The medical implant is applied to treatment of DeBakey II-type aortic dissection with a tearing opening appearing between a coronary artery opening and the junction of a sinus canal and / or a dissection section extending towards the coronary artery opening, and the first support body is used for providing radial force for the ascending aorta wall for anchoring; in addition, the barbs penetrate into the ascending aorta wall to provide anchoring force and resist blood flow impact, so that the first stent body is allowed to provide relatively small radial force, stimulation to the ascending aorta wall is reduced, and the occurrence rate of stent-derived new crevasses caused by the stimulation of the radial force is reduced.

The present disclosure generally relates to prosthetic implants, prosthetic implant systems, and their methods of use, for example, for treating a dissection. The prosthetic implants contemplated herein comprise an expandable arch support structure comprising one or more expandable branches configured to be placed within one or more vessels. Certain aspects of the disclosure relate to methods for treating a dissection, e.g., an aortic dissection, using said prosthetic implants and implant systems. The methods comprise advancing one or more guidewires into an ascending aorta, a descending aorta, and / or one or more one or more vessels of an aortic root or aortic arch. The methods further comprise exposing one or more components of the expandable arch support structure from a sheath. In some cases, the exposed component is an expandable branch that is advanced into the one or more vessels of the aortic root or aortic arch, thus anchoring the implant to the native aorta.

Apparatus and methods are described including an aortic pressure-loss-reduction device (20) configured to be delivered to and implanted inside an ascending aorta of a subject using a delivery device. The aortic pressure-loss-reduction device (20) includes a frame and a layer of material (54) coupled to at least a portion of the frame, the material layer configured to impede blood flow therethrough. A retrieval element (240), configured to facilitate retrieval of the aortic pressure-loss-reduction device (20) from the ascending aorta back into the delivery device, is coupled to an outside of the aortic pressure-loss-reduction device (20) and is configured to be disposed externally to the aortic pressure-loss-reduction device (20).

An implantable medical device including a frame operable to transition between a delivery configuration and a deployed configuration, a tubular member supported by the frame and defining a side wall, wherein the tubular member defines a lumen extending therethrough and at least one fenestration defined by the side wall, and a valve supported by the frame and positioned upstream from the at least one fenestration when implanted in an ascending aorta.

The invention relates to a novel aortic stent and a manufacturing method thereof. The novel aorta stent comprises a near-end stent section, a far-end stent section, an arch stent section, a covering film and a keel line, the near-end stent section is used for being implanted into a descending aorta, the far-end stent section is used for being implanted into an ascending aorta, and the arch stent section is used for being implanted into an aortic arch. The arch support section is located between the near-end support section and the far-end support section and connected with the near-end support section and the far-end support section. The covering film covers the near-end stent section and the far-end stent section. Wherein the near-end stent section, the arch stent section and the far-end stent section jointly define a supporting cavity, the covering film has foldability, and the keel line has a pre-bent shape. According to the novel aortic stent, the whole stent can achieve the bending effect in the keel line bending direction, so that the elastic straightening force of the novel aortic stent can be reduced, the flexibility of the novel aortic stent is improved, and complications caused by poor wall attachment are reduced.

This invention relates to a method and apparatus for quantitatively assessing left ventricular outflow tract obstruction and aortic stenosis. The method includes acquiring the outflow tract pressure gradient and cardiac output; determining the relationship between cardiac output and outflow tract pressure gradient using Bernoulli's equation; calculating the cardiac obstruction coefficient based on the equation; the cardiac obstruction coefficient includes the cardiac obstruction coefficient from the left ventricular cavity to the outflow tract segment and the cardiac obstruction coefficient from the outflow tract to the ascending aorta; and assessing the patient's obstruction status based on the cardiac obstruction coefficient. The cardiac obstruction coefficient calculated by this invention is mainly determined by the morphology of the patient's blood flow cavity and is not affected by cardiac output, thus providing a more accurate description of the patient's obstruction status. This helps physicians make more accurate clinical judgments.

Provided is a cannula capable of safely and effectively supplying blood in an antegrade manner from the ascending aorta while having a smaller diameter. The cannula comprises an antegrade blood return tube 1 and a blood supply tube 4. The antegrade blood return tube 1 has a distal end part having a guide wire opening that extends in the longitudinal direction substantially along the central axis of the distal end part. A guide wire tube 5 is placed through the opening. A guide wire 50 is inserted through the guide wire tube 5. The antegrade blood return tube 1 comprises a distal tapered portion on the distal side and a body portion on the proximal side, and the distal tapered portion and the body portion are integrally molded. The distal tapered portion comprises a tip part and fins, and the body portion comprises fins and a tubular part. The proximal end of the tip part, the fins, and the distal end of the tubular part forms a louver 2. The louver 2 is supported by a total of four beams extending from the tip part to the tubular part in the longitudinal direction of the antegrade blood return tube 1.

The present disclosure generally relates to prosthetic implants, prosthetic implant systems, and their methods of use, for example, for treating a dissection. The prosthetic implants contemplated herein comprise an expandable arch support structure comprising one or more expandable branches configured to be placed within one or more vessels. Certain aspects of the disclosure relate to methods for treating a dissection, e.g., an aortic dissection, using said prosthetic implants and implant systems. The methods comprise advancing one or more guidewires into an ascending aorta, a descending aorta, and / or one or more one or more vessels of an aortic root or aortic arch. The methods further comprise exposing one or more components of the expandable arch support structure from a sheath. In some cases, the exposed component is an expandable branch that is advanced into the one or more vessels of the aortic root or aortic arch, thus anchoring the implant to the native aorta.

The utility model relates to a magnetic anastomosis aortic arch which comprises four artificial blood vessels and a plurality of second magnetic rings, the anastomotic stoma of each artificial blood vessel is provided with a first magnetic ring, each second magnetic ring is arranged at the broken end of the corresponding human blood vessel, and the first magnetic ring and the second magnetic ring attract each other through the magnetic force of the first magnetic ring and the magnetic force of the second magnetic ring. Connection and anastomosis of the artificial blood vessel and the human blood vessel are achieved. The four artificial blood vessels are an aorta blood vessel, a brachial trunk blood vessel, a left common carotid artery blood vessel and a left subclavian artery blood vessel, and one end of the brachial trunk blood vessel, one end of the left common carotid artery blood vessel and one end of the left subclavian artery blood vessel are sequentially connected on the aorta blood vessel in the direction from the ascending aorta to the descending aorta. And the other end of the brachial trunk blood vessel, the other end of the left subclavian artery blood vessel and the two ends of the aorta blood vessel are anastomotic stomas of the artificial blood vessel. The arcus aortae operation can be simplified, the operation time is shortened, the operation difficulty is reduced, operation wounds are reduced, and the operation effect and safety are improved.

The application aims to provide a blood circulation assisting system capable of generating pulsating blood flow and guaranteeing body functions, comprising a first blood circulation supporting unit located in a heart chamber of a patient and a second blood circulation supporting unit located in a descending aorta of the patient, the first blood circulation supporting unit pumping blood in the heart chamber to the aorta, and the second blood circulation supporting unit generating pulsating blood flow by periodically contracting and expanding to squeeze blood, and partially blocking the blood vessel when expanding. When the second blood circulation supporting unit periodically expands to squeeze blood, it does not completely block the blood vessel, but leaves a part of the blood flow passage, so as to allow part of the blood to pass through, prevent the ascending aorta pressure from suddenly rising, and prevent the blood from flowing back to the left ventricle, and also prevent the second blood circulation supporting unit from moving, so as to guarantee the pulsating effect and prevent unnecessary damage to the inner wall of the blood vessel.

The invention relates to a left ventricle auxiliary device and an implantation assembly. The left ventricle auxiliary device comprises a small and special electric machine and a housing with a blood channel, the small and special motor comprises a shell and a pump machine body, the pump machine body is provided with a motor shaft, pump blades are arranged on the motor shaft, and the motor shaft extends out of the shell and extends into the housing; the shell is provided with a rear cover, the inner end of the wire penetrates through the rear cover to be electrically connected with the pump machine body, and the outer end of the wire is electrically connected with an external power supply control device. The housing comprises a pumping-in cover, a transition pipe and a pumping-out cover, the pumping-in cover is provided with a blood suction hole, and the pumping-out cover is provided with a blood discharge hole; a first suction cup and a second suction cup are arranged outside the shell, and a third suction cup and a fourth suction cup are arranged outside the transition pipe. The left ventricle auxiliary device can be implanted into a body through the implantation assembly. The left ventricle auxiliary device is simple and small in structure, implantation can be completed through percutaneous puncture by means of the implantation assembly, blood can be pumped into the ascending aorta from the left atrium through a blood channel, and the left ventricle auxiliary function is achieved.

The invention discloses an ascending aorta full-cavity integrated branch covered stent system. The stent system comprises a main stent and a branch stent, wherein the main stent is sequentially provided with an ascending aorta far-end anchoring sealing area, an accordion type elastic stent area, an ascending aorta near-end anchoring sealing area, a coronary artery branch reconstruction area, a flexible buffer area and an artificial aortic valve area; the ascending aorta far-end anchoring sealing area, the accordion type elastic support area, the ascending aorta near-end anchoring sealing area, the coronary artery branch reconstruction area and the flexible buffer area are provided with annular metal frames, the outer portions of the metal frames are coated with covering films by attaching to the metal frames, and the axis of each annular metal frame is the same as that of the main body support. According to the invention, the problem that the implanted ascending aorta stent affects the physiological function of the heart in the prior art is solved.

A method of performing a post-TAVR PCI procedure includes providing a catheter device including a housing, an outer tubular member coupled to the housing, an inner tubular member slidably received within an interior of the outer tubular member, and a slider coupled to the housing and the inner tubular member, wherein the inner tubular member is configured to slide relative to the outer tubular member. The outer tubular member is advanced into an interior of a TAVR valve disposed in an ascending aorta of a patient and a guidewire is extended from the outer tubular member to cause the guidewire to enter a coronary artery branching from the ascending aorta. The inner tubular member is extended from the outer tubular member into the coronary artery via a sliding of the slider relative to the housing, and the outer tubular member is optionally advanced further over the inner tubular member.

Described herein are pumps that linearly reciprocate to assist with circulating blood within the body of a patient. Red blood cell damage may be avoided or minimized by such linear pump movement. The linearly reciprocating movement may also generate a pulsatile pumping cycle that mimics the natural pumping cycle of the heart. The pumps may be configured to reside at various body locations. For example, the pumps may be situated within the right ventricle, the left ventricle, the ascending aorta, the descending aorta, the thoracic aorta, or the abdominal aorta. In some instances, the pump may be deployed within the venous circulation. In other instances, the pump may reside outside the patient.

The application relates to an aortic stent and a manufacturing method thereof. The manufacturing method of the aortic stent comprises the following steps: providing a proximal stent section for being implanted into a descending aorta, a distal stent section for being implanted into an ascending aorta, and an arch stent section for being implanted into an aortic arch; providing a foldable covering film; covering the covering film on the proximal stent section and the distal stent section; providing a keel line with a pre-bent shape; and penetrating the keel line through the proximal stent section, the arch stent section and the distal stent section; wherein the proximal stent section, the arch stent section and the distal stent section jointly define a supporting cavity, the covering film is foldable, and the keel line has the pre-bent shape. The whole stent can be bent along the bending direction of the keel line, so that the elastic straightening force of the aortic stent itself can be reduced, the flexibility of the aortic stent is improved, and the complications caused by poor adhesion are reduced.

The present application relates to cardiovascular disease medical equipment technical field, disclose a kind of aortic covered stent, the aortic covered stent includes support stent, closure layer and elastic connecting layer, closure layer is spaced apart and is set to the outer periphery of support stent, closure layer includes first covering, elastic connecting layer is connected between support stent and closure layer, blood flow can flow between support stent and closure layer;With aortic pulsation, closure layer and elastic connecting layer produce elastic deformation, so that first covering is always close to aortic and the blood vessel wall adjacent to closure layer.The aortic covered stent can be better applied to the special form of ascending aortic dissection and the mechanical characteristics of blood flow, higher stability, better closure for ascending aortic wall.

A device for protecting debris from entering coronary arteries, the device including an expandable frame, and a debris blocking obstacle, wherein the expandable frame is shaped and sized to expand against walls of an ascending aorta. A method of reducing damage to the heart during a vascular procedure including identifying a potentially debris-causing event, and reducing debris carried by backflow from an aorta into a coronary artery during diastole in response to the identifying. A method for protecting debris from entering coronary arteries during a medical procedure, the method including inserting a device for protecting debris from entering coronary arteries into an aorta of a patient, positioning the device to protect debris from entering the coronary arteries, and performing the medical procedure on a heart of the patient. Related apparatus and methods are also described.

The application is a catheter pump with oxygen supply function which can improve oxygen supply of body circulation, the proximal end of the motor is connected with the catheter, the distal end is coaxially connected with an impeller, the outer periphery cover of the impeller is provided with a blood outflow cage, the distal end of the blood outflow cage is fixed with the proximal end of a blood inflow cage through a sleeve, the distal end of the blood inflow cage is further connected with a pigtail tube, an oxygen supply unit is arranged on the blood outflow cage, the oxygen supply unit generates oxygen according to physiological signals collected by a sensing unit in the ascending aorta according to time and demand, and releases the oxygen into the blood in the ascending aorta. In the process of assisting the heart to pump blood, the catheter pump can simultaneously supplement oxygen into the blood by using the oxygen supply unit, and improve the hypoxia condition of the whole body tissue. The oxygen supply unit is integrated on the catheter pump, and the catheter pump is intervened through the blood vessel together with the oxygen supply unit, so that the operation is simple, the damage to the blood vessel is reduced, the risk of gas embolism is reduced, the oxygen is better distributed, the oxygen supply mode is more in line with the physiological state, and the recovery of the patient is facilitated.

The invention discloses a valved endovascular graft for Endo-Bentall, which relates to the technical field of medical instruments and comprises an ascending aorta graft and two coronary artery covered stents. The ascending main section is a straight tube type covered stent, the far end of the ascending main section is anchored to the ascending aorta, and the near end of the ascending main section is provided with an embedded branch opening in the sinus tube section; the sinus canal section is in a concave shape and is provided with a metal bare stent and an embedded branch opening for bridging the coronary artery; a biological valve is sewn in the sinus valve section, and the far end of the sinus valve section is anchored to the left ventricular outflow tract. The anchoring area sequentially comprises a left ventricular outflow tract, a sinus tube junction and an ascending aorta. The coronary artery branch covered stent is conical and small-caliber, the near end is connected with the embedded branch, and the far end extends into the coronary artery. The graft can be used for repairing dissection lesions and reconstructing coronary artery and aortic valves in the whole cavity.