CN115153955A - Covered stent, arterial dissection treatment device and use method - Google Patents

Covered stent, arterial dissection treatment device and use method Download PDF

Info

Publication number
CN115153955A
CN115153955A CN202210798581.2A CN202210798581A CN115153955A CN 115153955 A CN115153955 A CN 115153955A CN 202210798581 A CN202210798581 A CN 202210798581A CN 115153955 A CN115153955 A CN 115153955A
Authority
CN
China
Prior art keywords
port
blood
flow guide
guide channel
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210798581.2A
Other languages
Chinese (zh)
Inventor
欧阳晨曦
顾沅芮
周泽明
孙阳雪
王运红
李鸣瑶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuwai Hospital of CAMS and PUMC
Original Assignee
Fuwai Hospital of CAMS and PUMC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuwai Hospital of CAMS and PUMC filed Critical Fuwai Hospital of CAMS and PUMC
Priority to CN202210798581.2A priority Critical patent/CN115153955A/en
Publication of CN115153955A publication Critical patent/CN115153955A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2/07—Stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Transplantation (AREA)
  • Cardiology (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Pulmonology (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Prostheses (AREA)

Abstract

The embodiment of the invention discloses a covered stent, an arterial interlayer treatment device and a using method, wherein the covered stent comprises: the flow guide channel comprises a first port and a second port and is used for being implanted into an arterial blood vessel, and blood is perfused from the second port to the flow guide channel so as to flow in a preset direction; the annular island part is arranged on the side surface of the flow guide channel and is used for guiding the blood; and the clamping piece is arranged on the side surface of the flow guide channel and is positioned between the first port of the flow guide channel and the annular island part, and when the clamping piece is closed, the first port and the annular island part are in a closed state. The technical scheme can realize normal blood supply to the brain in the operation process, and avoids the injury to the brain caused by insufficient blood supply in the operation and the problems of operation sequelae such as dizziness, blurred vision, limb numbness and the like.

Description

Covered stent, arterial dissection treatment device and use method
Technical Field
The invention relates to the technical field of medical instruments, in particular to a covered stent, an arterial interlayer treatment device and a using method.
Background
The aortic dissection refers to life-threatening diseases such as aortic intimal rupture caused by pathological changes of blood in the aortic lumen from the middle layer of the aortic wall, blood flowing into the middle layer of the arterial wall to separate the media and expand along the major axis direction of the aorta to form a true and false two-lumen separation state, and further to cause vascular tear, even cardiac end tear, aortic valve regurgitation, coronary artery opening tear and the like. The aorta is the largest blood vessel in the human body and establishes the important blood perfusion with the vascular system of other parts of the body such as the heart, brain, etc. In the prior art, when the aortic dissection is treated, cerebral blood perfusion needs to be stopped for a certain time, so that the brain is easily damaged.
Disclosure of Invention
In order to solve the problems in the related art, the embodiments of the present invention provide a stent graft, an arterial dissection treatment device and a use method.
In a first aspect, embodiments of the present invention provide a stent graft.
Specifically, the stent graft comprises:
the flow guide channel comprises a first port and a second port and is used for being implanted into an arterial blood vessel, and blood is perfused from the second port to the flow guide channel so as to flow in a preset direction;
the annular island part is arranged on the side surface of the flow guide channel and is used for guiding the blood;
and the clamping piece is arranged on the side surface of the flow guide channel and is positioned between the first port of the flow guide channel and the annular island part, and when the clamping piece is closed, the first port and the annular island part are in a closed state.
Optionally, the flow guide channel comprises: and the flexible channel is positioned between the first port of the flow guide channel and the annular island part, and the clamping piece is arranged on the flexible channel.
Optionally, the flexible channel is an artificial blood vessel.
Optionally, a positioning indication mark is arranged between the first port of the flow guide channel and the clamping piece.
Optionally, the annular island comprises several branch channels matching the arterial vessel branches.
Optionally, the shape of the flow guide channel includes any one of a partially outward bulge or inward depression, a straight cylinder shape, a conical shape, or a curved shape.
Optionally, the clamping member is a vascular clamp.
In a second aspect, embodiments of the present invention provide an aortic dissection treatment apparatus.
Specifically, the interbed arterial therapy device includes:
a stent graft as described in any one of the first aspect; and
and the blood supply device is detachably connected with the second port, and the blood is perfused into the flow guide channel through the second port so as to flow in a preset direction.
Optionally, the flow guide channel comprises: the flexible channel is located between the first port of the flow guide channel and the annular island, and the clamping piece is arranged on the flexible channel.
Optionally, the flexible channel is an artificial blood vessel.
Optionally, a positioning indication mark is arranged between the first port of the flow guide channel and the clamping piece.
Optionally, the annular island includes several branch channels matching the arterial vessel branches.
Optionally, the shape of the flow guide channel includes any one of a partially outward bulge or inward depression, a straight cylinder shape, a conical shape, or a curved shape.
Optionally, the clamping member is a vascular clamp.
In a third aspect, embodiments of the present invention provide a method for using an arterial dissection treatment device.
Specifically, the method for using the arterial interlayer treatment device comprises the following steps:
implanting a stent graft according to any one of the first aspect,
the clamping member is closed and the clamping member is closed,
perfusing blood from the second port to the diversion channel to cause the blood to flow in a preset direction; or alternatively
Using the aortic dissection treatment apparatus of the second aspect,
implanting the covered stent into the body of the patient,
the clamping member is closed and the clamping member is closed,
and opening the blood supply device, and perfusing blood from the second port to the diversion channel so as to make the blood flow according to a preset direction.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the embodiment of the invention provides a tectorial membrane support, which comprises: the flow guide channel comprises a first port and a second port and is used for being implanted into an arterial blood vessel, and blood is perfused from the second port to the flow guide channel so as to flow in a preset direction; the annular island part is arranged on the side surface of the flow guide channel and is used for guiding the blood; and the clamping piece is arranged on the side surface of the flow guide channel and is positioned between the first port of the flow guide channel and the annular island part, and when the clamping piece is closed, the first port and the annular island part are in a closed state. Above-mentioned technical scheme is through setting up the clamping piece between the first port at water conservancy diversion passageway and rotary island portion, when needing to carry out blood perfusion to the brain at the artery intermediate layer operation in-process, it seals to close the first port that the clamping piece made water conservancy diversion passageway, the blood of filling gets into the back from the second port, the direction along rotary island portion drainage gets into the brain, thereby realize the normal blood supply to the brain at the operation in-process, because of the damage that the blood supply is not enough to cause the brain when having avoided the operation, and probably cause the dizziness, it is unclear to see the thing, the problem of operation sequelae such as limbs numbness.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments thereof, taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 shows a schematic structural view of a stent graft according to an embodiment of the present invention.
FIG. 2 is a schematic view showing the positional relationship of a stent graft according to an embodiment of the present invention with an aortic valve.
FIG. 3 illustrates a schematic view of the location of a positioning indicator in a stent graft according to one embodiment of the invention.
Fig. 4 shows a schematic configuration of an arterial dissection treatment device according to an embodiment of the invention.
A flow guide channel-1, a first port-11, a second port-12, an islet part-2, a clamping part-3, a positioning indication mark-4, a blood supply device-5, an artificial blood vessel-6 and an aortic valve-7.
Detailed Description
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. Also, for the sake of clarity, parts not relevant to the description of the exemplary embodiments are omitted in the drawings.
Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, being fixedly connected, releasably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The aortic dissection refers to life-threatening diseases such as aortic intimal rupture caused by pathological changes of blood in the aortic lumen from the middle layer of the aortic wall, blood flowing into the middle layer of the arterial wall to separate the media and expand along the major axis direction of the aorta to form a true and false two-lumen separation state, and further to cause vascular tear, even cardiac end tear, aortic valve regurgitation, coronary artery opening tear and the like. The aorta is the largest blood vessel in the human body and establishes the important blood perfusion with the vascular system of the heart, brain, etc. in other parts of the body. In the prior art, when the aortic dissection is treated, cerebral blood perfusion needs to be stopped for a certain time, so that the brain is easily damaged.
The present invention has been made to solve, at least in part, the problems in the prior art, which have been discovered by the inventors.
FIG. 1 shows a schematic structural view of a stent graft according to an embodiment of the present invention. FIG. 2 is a schematic view showing the positional relationship of a stent graft according to an embodiment of the present invention with an aortic valve. FIG. 3 illustrates a schematic view of the location of a positioning indicator in a stent graft according to one embodiment of the invention. Fig. 4 shows a schematic configuration of an arterial dissection treatment device according to an embodiment of the invention.
As shown in FIG. 1, the stent graft of the present invention comprises a flow guide channel 1, an annular island part 2 and a clamping part 3. The flow guide channel 1 is a through flexible bending pipeline, comprises a first port 11 and a second port 12, is used as an auxiliary device for blood perfusion and is implanted into a blood vessel, then blood is perfused from the second port 12, and the perfused blood can flow in the direction of the flow guide channel 1 to realize blood supply. The side of water conservancy diversion passageway 1 is provided with ring island portion 2, and ring island portion 2 can be an opening, also can be a plurality of tributary passageway, aims at other tributary arteries and veins with the ring island portion 2 of open-ended form, perhaps when arranging tributary passageway in other tributary arteries and veins, can be with the blood drainage of pouring into in the water conservancy diversion passageway 1 to other tributary arteries and veins. A clamping piece 3 is arranged between the first port 11 of the flow guide channel 1 and the roundabout part 2, the clamping piece 3 can be opened or closed, when the clamping piece 3 is opened, the first port 11 of the flow guide channel 1 and the roundabout part 2 are in an opened state, namely, the first port 11 of the flow guide channel 1 and the roundabout part 2 can realize blood circulation; when the clamping member 3 is closed, the first port 11 of the flow guide channel 1 and the roundabout part 2 are in a closed state, and blood perfused from the second port 12 can only be drained from the roundabout part 2 to other branches.
For example, in the case of performing a surgical operation for treating a type a aortic dissection, the stent graft of the present invention is placed in an arterial vessel, wherein the first port 11 of the flow guide channel 1 is connected to the ascending aorta, and the peri-island 2 can be an opening, so that the opening part is aligned with the openings of three branches of the brachiocephalic artery, the left common carotid artery and the left subclavian artery of the aortic arch; or the annular island part 2 is three branch channels, the three branch channels are respectively connected with the brachiocephalic trunk artery, the left common carotid artery and the left subclavian artery of the aortic arch, then the clamping part 3 is closed to seal the first port 11 of the flow guide channel 1 and the annular island part 2, then blood is perfused from the second port 12 of the flow guide channel 1, and the perfused blood is drained to the brachiocephalic trunk artery, the left common carotid artery and the left subclavian artery of the aortic arch by the annular island part 2, so that continuous blood supply to the brain in the operation process is realized.
As shown in fig. 2, the flow guide channel 1 of the present invention may include a flexible channel, for example, an artificial blood vessel 6 made of dacron, teflon, polyurethane and natural mulberry silk or other conduit having certain strength and flexibility. The flexible channel is located between the first port 11 of the flow guide channel 1 and the annular island part 2, the flexible channel can be completely arranged between the first port 11 of the flow guide channel 1 and the annular island part 2, or partially arranged between the first port 11 of the flow guide channel 1 and the annular island part 2, the flexible channel has certain strength and flexibility, the clamping piece 3 is arranged on the flexible channel, the sealing performance is good when the clamping piece 3 is closed, and blood seepage is avoided or reduced during blood perfusion.
With reference to fig. 2, after the blood vessel of the ascending aorta of the heart is cut open during the operation, a flexible channel such as an artificial blood vessel 6 is placed in the blood vessel cut close to the aortic valve 7 at the proximal end of the heart, and then the clamping member 3 is used to clamp the distal end of the artificial blood vessel 6, so that blood can be supplied to the brain during the operation. Because the artificial blood vessel 6 is anastomosed with the ascending aorta of the heart, the risk of operation can be reduced to the greatest extent, and the problem that the risk of operation is increased because the non-artificial blood vessel 6 can not be placed in the ascending aorta of the heart is avoided.
In addition, the shape of the flow guide channel 1 in the invention can be any one of a shape which is locally expanded outwards or inwards concave, a straight cylinder shape, a conical shape or a curved shape. The covered stent of the invention can be implanted into not only artery vessels for continuously supplying blood to the brain, but also other types of operations and other branch vessels, and can achieve the effects of controlling the blood supply flow direction and supplying blood to different organs of the human body. Therefore, the shape of the flow guide channel 1 of the present invention may be adapted to the blood vessel of the human body or similar to the blood vessel of the human body, which is not limited by the present invention.
Further, as shown in fig. 3, a positioning indication mark 4 is arranged between the first port 11 of the flow guide channel 1 and the clamping member 3. The positioning indication mark 4 can be used for positioning the clamping piece 3, and also can be used for marking the length of the first port 11 of the flow guide channel 1 which is immersed into the artery blood vessel when the covered stent of the invention is implanted into the artery blood vessel, so that the position of the flow guide channel 1 can be conveniently and visually adjusted to reposition the flow guide channel, and the requirements of different operations can be met.
Further, the clamping member 3 of the present invention may be a medical sterile vascular clamp, such as an aluminum tube clamp, a catheter clamp, a side clamp, a plastic clamp, a micro clamp, a slide clamp, etc., as long as the diversion channel 1 can be opened or closed, which is not limited in the present invention.
The invention provides a covered stent, comprising: the flow guide channel comprises a first port and a second port and is used for being implanted into an arterial blood vessel, and blood is perfused from the second port to the flow guide channel so as to flow in a preset direction; the annular island part is arranged on the side surface of the flow guide channel and is used for guiding the blood; and the clamping piece is arranged on the side surface of the flow guide channel and is positioned between the first port of the flow guide channel and the annular island part, and when the clamping piece is closed, the first port and the annular island part are in a closed state. Above-mentioned technical scheme is through setting up the clamping piece between the first port at water conservancy diversion passageway and rotary island portion, when needing to carry out blood perfusion to the brain at the artery intermediate layer operation in-process, the first port that closes the clamping piece messenger water conservancy diversion passageway seals, the blood of filling gets into the back from the second port, the direction along rotary island portion drainage gets into the brain, thereby realize in operation process normally supplying blood to the brain, because of the damage that the blood supply is not enough to cause the brain when having avoided the operation, and probably cause the dizziness, it is unclear to see the thing, the problem of operation sequelae such as limbs numbness.
According to an embodiment of the invention, the flow guide channel comprises: and the flexible channel is positioned between the first port of the flow guide channel and the annular island part, and the clamping piece is arranged on the flexible channel. Wherein the flexible channel is an artificial blood vessel. The flexible channel has certain intensity and flexibility, sets up the clamping piece on the flexible channel, and sealing performance is good when closing the clamping piece, and the oozing blood is not gone or oozing blood is few when filling blood, reduces the operation risk of performing the operation.
According to the embodiment of the invention, a positioning indication mark is arranged between the first port of the flow guide channel and the clamping piece. The position of the flow guide channel can be conveniently and visually adjusted through the positioning indication mark, so that the tectorial membrane bracket can meet the requirements of different operations.
According to an embodiment of the invention, the annular island comprises several branch channels matching the arterial vessel branches. The blood drainage direction of perfusion is more definite through the branch channel, so that the blood perfusion is more smooth and smooth, and the blood extravasation is avoided.
According to the embodiment of the invention, the shape of the flow guide channel comprises any one of a local outward bulge or inward recess, a straight cylinder shape, a conical shape or a curved shape. The shape of the covered stent is matched with the shape of the blood vessel, so that the covered stent can be applied to various different operation scenes.
According to an embodiment of the invention, the clamping member is a vascular clamp.
Based on the same or similar design ideas, the invention also provides an arterial dissection treatment device which is shown in fig. 4 and comprises the covered stent as described above; and the blood supply device is detachably connected with the second port, and the blood is perfused to the flow guide channel through the second port so as to flow in a preset direction. The blood supply device 5 may be an extracorporeal circulation system or other devices that can perform blood supply function, such as a Cardiopulmonary bypass (CPB) device, which is not limited by the present invention. Reference may be made to the above-mentioned related technical details, which are not described herein again.
Based on the same or similar design ideas, the invention also provides a use method of the arterial dissection treatment device, which comprises the following steps: implanting the stent graft in the blood vessel, closing the clamping piece, and perfusing blood from the second port to the diversion channel to make the blood flow according to a preset direction;
or using an arterial dissection treatment apparatus as hereinbefore described, comprising: implanting a stent graft as described above in a blood vessel, closing the clamping member, opening the blood supply device, and perfusing blood from the second port to the diversion channel to cause the blood to flow in a predetermined direction. Reference may be made in detail to the above-mentioned related technical details, which are not described herein again.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features and (but not limited to) features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.

Claims (9)

1. A stent graft, comprising:
the flow guide channel comprises a first port and a second port and is used for being implanted into an arterial blood vessel, and blood is perfused from the second port to the flow guide channel so as to flow in a preset direction;
the annular island part is arranged on the side surface of the flow guide channel and is used for guiding the blood;
and the clamping piece is arranged on the side surface of the flow guide channel and is positioned between the first port of the flow guide channel and the annular island part, and when the clamping piece is closed, the first port and the annular island part are in a closed state.
2. The stent graft as recited in claim 1, wherein the flow guide channel comprises:
and the flexible channel is positioned between the first port of the flow guide channel and the annular island part, and the clamping piece is arranged on the flexible channel.
3. The stent graft of claim 2, wherein:
the flexible channel is an artificial blood vessel.
4. The stent-graft of claim 1, wherein:
and a positioning indication mark is arranged between the first port of the flow guide channel and the clamping piece.
5. The stent graft of any one of claims 1-4, wherein:
the annular island includes a plurality of branch channels that mate with the arterial vessel branches.
6. The stent-graft of claim 1, wherein:
the shape of the flow guide channel comprises any one of a shape which is locally expanded outwards or sunken inwards, a straight cylinder shape, a conical shape or a curved shape.
7. The stent-graft of claim 1, wherein:
the clamp is a vascular clamp.
8. An artery interlayer treatment device is characterized in that,
comprising the stent graft of any one of claims 1-7; and
and the blood supply device is detachably connected with the second port, and the blood is perfused to the flow guide channel through the second port so as to flow in a preset direction.
9. A method of using an arterial dissection treatment device, comprising:
implanting the stent graft of any one of claims 1-7,
the clamping member is closed and the clamping member is closed,
perfusing blood from the second port to the diversion channel to cause the blood to flow in a preset direction; or
Use of the dissection treatment device of claim 8,
implanting the covered stent into the body of the patient,
the clamping member is closed and the clamping member is closed,
and opening the blood supply device, and perfusing blood from the second port to the diversion channel so as to enable the blood to flow according to a preset direction.
CN202210798581.2A 2022-07-06 2022-07-06 Covered stent, arterial dissection treatment device and use method Pending CN115153955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210798581.2A CN115153955A (en) 2022-07-06 2022-07-06 Covered stent, arterial dissection treatment device and use method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210798581.2A CN115153955A (en) 2022-07-06 2022-07-06 Covered stent, arterial dissection treatment device and use method

Publications (1)

Publication Number Publication Date
CN115153955A true CN115153955A (en) 2022-10-11

Family

ID=83492054

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210798581.2A Pending CN115153955A (en) 2022-07-06 2022-07-06 Covered stent, arterial dissection treatment device and use method

Country Status (1)

Country Link
CN (1) CN115153955A (en)

Similar Documents

Publication Publication Date Title
US4173981A (en) Cannula for arterial and venous bypass cannulation
US9878087B2 (en) Pump-inflow-cannula, a pump-outflow-cannula and a blood managing system
US5308319A (en) Cardio assist system and insertion device therefor
US6022335A (en) Implantable hemodialysis triple port assembly
US6123725A (en) Single port cardiac support apparatus
EP1244493B1 (en) Device for controlling extra-vascular haemorrhage
US11911585B2 (en) Methods and systems for coupling conduits
US20050203457A1 (en) Apparatus and method for creating an arterio-venous connection in hemodialysis maintenance
US6258079B1 (en) Method and systems for establishing vascular access
US20070249986A1 (en) Arteriovenous access for hemodialysis employing a vascular balloon catheter and an improved hybrid endovascular technique
US20070233172A1 (en) Expandable conduit-guide and a method for applying and positioning an expandable conduit-guide
CA3019295C (en) Apparatus for modifying a sheath
CN110495969B (en) Aortic arch-thoracic aorta slideway regulation and control pre-windowing covered stent
CN115153955A (en) Covered stent, arterial dissection treatment device and use method
CN107049556A (en) Pourable distal end belt supporting frame artificial blood vessel and arch of aorta drop portion artificial blood vessel
JPH11335A (en) Blood vessel anastomosis aid
CN215130877U (en) Trunk support assembly capable of shortening cycle time and trunk support implantation system
CN215307028U (en) Branch type aorta artificial stent
US20060089588A1 (en) Aortic balloon occlusion cannula
CN211609888U (en) Aorta flow-switching device for in-situ windowing
EP4313205A2 (en) Devices for fistula-free hemodialysis
TWI749265B (en) Systems for treatment of aortic dissection and aneurysm and method for use thereof
CN113499164B (en) Trunk support implanting system
RU228787U1 (en) Frozen elephant trunk endoprosthesis
CN110638557B (en) Four-branch artificial blood vessel assembly

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination