KR101778087B1 - Stent assembly for treatment of aneurysm - Google Patents

Stent assembly for treatment of aneurysm Download PDF

Info

Publication number
KR101778087B1
KR101778087B1 KR1020160089012A KR20160089012A KR101778087B1 KR 101778087 B1 KR101778087 B1 KR 101778087B1 KR 1020160089012 A KR1020160089012 A KR 1020160089012A KR 20160089012 A KR20160089012 A KR 20160089012A KR 101778087 B1 KR101778087 B1 KR 101778087B1
Authority
KR
South Korea
Prior art keywords
member
stent
aneurysm
tube member
pressing
Prior art date
Application number
KR1020160089012A
Other languages
Korean (ko)
Inventor
김철생
박찬희
이도희
김진우
Original Assignee
전북대학교산학협력단
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 전북대학교산학협력단 filed Critical 전북대학교산학협력단
Priority to KR1020160089012A priority Critical patent/KR101778087B1/en
Application granted granted Critical
Publication of KR101778087B1 publication Critical patent/KR101778087B1/en

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/844Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents folded prior to deployment
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/852Two or more distinct overlapping stents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/94Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L31/00Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/02Inorganic materials
    • A61L31/022Metals or alloys
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L31/00Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/04Macromolecular materials
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L31/00Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/14Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A61L31/148Materials at least partially resorbable by the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2210/00Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0004Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2210/00Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0014Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2210/00Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0061Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof swellable
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2210/00Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0076Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof multilayered, e.g. laminated structures

Abstract

The present invention relates to a stent assembly for treating aneurysm and, more specifically, to a stent assembly for treating aneurysm to remove aneurysm by blocking blood supplied to aneurysm. The stent assembly for treating aneurysm comprises: a hollow stent member made of metals; a hollow tube member made of polymer nanofibers and inserted into the stent member; and a pressurizing member inserted into the tube member and compressing the tube member to adhere to the inner wall of the stent member.

Description

STENT ASSEMBLY FOR TREATMENT OF ANEURYSM

The present invention relates to a stent assembly for treating an aneurysm, and more particularly, to a stent assembly for treating an aneurysm that blocks blood supplied to an aneurysm to remove an aneurysm.

Recently, coronary artery disease such as angina pectoris and myocardial infarction and cerebrovascular disease such as cerebral infarction and cerebral hemorrhage have been rapidly increasing, leading to adult death.

Cerebrovascular disease is a term that refers to a disorder in which blood vessels that supply blood to the brain are termed. It causes local neurological symptoms such as loss of consciousness, hemiplegia, and speech disorder caused by sudden cerebral blood flow disorder, and causes severe death It is a terrible disease.

Cerebral infarction, which is a high frequency of cerebrovascular disease, is caused by blood circulation disorder due to clotting of blood vessels due to deposition of thrombus in the narrowed cerebral artery. According to US statistics, about 150,000 people die from cerebral infarction per year, In most cases, after the recovery, there is a great deal of social and economic loss due to the problem of leaving behind.

On the other hand, the lumen in the body may vary in size, shape, and / or openness, and such changes may present complexity or affect the associated bodily functions.

For example, the walls of blood vessels, especially the arterial walls, can develop a pathological expansion called aneurysms.

 The aneurysm is observed as swelling of the arterial wall.

This is the result of the vessel wall being weakened by disease, injury, or congenital malformations.

Aneurysms have thin and weak walls, tend to rupture, and are often caused or exacerbated by hypertension.

Aneurysms can be found in different parts of the body, the most common being abdominal aortic aneurysms and brain or cranial aneurysms.

The mere presence of an aneurysm is not always life-threatening, but it can have serious health problems such as stroke if ruptured in the brain.

In addition, ruptured aneurysms may cause death.

In order to treat the above-mentioned aneurysm, recently, a technique of inserting a balloon, a coil, an expanding wire or the like into an aneurysm, or attaching a stent or the like to a blood vessel to block an aneurysm by a stent has been developed.

However, such a therapeutic agent for treating an aneurysm of the prior art is complicated because of its complicated product, and there is a problem in that it is difficult to perform the procedure, or the blood other than the aneurysm is damaged.

1. Korean Patent Publication No. 10-2012-0044928 2. Korean Patent Publication No. 10-2011-0058882

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stent assembly for treating an aneurysm that can easily remove an aneurysm using an existing vascular stent.

According to an aspect of the present invention, there is provided a stent assembly for treating an aneurysm, comprising: a stent member made of metal and having a hollow shape; A hollow tube member made of polymer nanofibers and inserted in the stent member; And a pressing member inserted in the tube member to press-contact the tube member against the inner wall of the stent member.

The pressing member presses the tube member while the diameter of the pressing member expands, the diameter of the stent member and the tube member being expanded by the urging force of the pressing member.

The pressing member is made of a shape memory alloy, and keeps its contracted state at room temperature and expands in diameter in response to the body temperature of the patient.

The pressing member is wound in a roll form at room temperature, and the pressing member expands and expands in response to the body temperature of the patient to expand the diameter.

The pressing member is made of a nitinol thin film.

The tube member is made of a biodegradable polymer, and a plurality of pores are formed in the pressing member.

The pressure members are partially overlapped at both ends in an expanded state.

The length of the pressing member is longer than the length of the tube member, and the length of the stent member is longer than the length of the pressing member.

According to the stent assembly for treating an aneurysm of the present invention as described above, the following effects can be obtained.

An aneurysm can be easily removed using the same stent member as a conventional vascular stent.

In particular, the tube member can be pressed and fixed between the pressing member and the stent member by bringing the tube member into close contact with the inner wall of the stent member by the pressing member.

1 is a perspective view of a stent assembly for treating an aneurysm according to an embodiment of the present invention,
FIG. 2 is an exploded perspective view of a stent assembly for treating an aneurysm according to an embodiment of the present invention,
FIG. 3 is a perspective view of a stent assembly for treating an aneurysm according to an embodiment of the present invention,
FIG. 4 is a cross-sectional structural view of a stent assembly for treating an aneurysm according to an embodiment of the present invention,
FIG. 5 is a structural view of a stent assembly for treating an aneurysm, according to an embodiment of the present invention, inserted into a blood vessel.

The stent assembly for treating an aneurysm of the present invention comprises a stent member 10, a tube member 20, and a pressing member 30 as shown in Figs. 1 to 5.

The stent member 10 is made of a metal and has a hollow shape with an empty interior.

The tangible stent member 10 is entangled with a plurality of wires or the like so that a through hole is formed on the outer circumferential surface, and it is sufficient to use a conventional known stent.

The stent member 10 allows the length and diameter to be expanded or contracted by an external force.

The tube member 20 is made of a polymeric nanofiber and has a medium cylindrical shape and is inserted and disposed inside the stent member 10.

The tube member 20 is manufactured by electrospinning, and the length and diameter are expanded or contracted by an external force.

The tube member 20 is made of a biodegradable polymer.

The pressing member 30 is inserted into the tube member 20 and presses the tube member 20 against the inner wall of the stent member 10.

The pressing member 30 presses the tube member 20 while expanding its diameter as shown in FIG.

The pressing member 30 may have various shapes and structures, and may press the tube member 20 against the inner wall of the stent member 10.

In this embodiment, the pressing member 30 is made of a shape memory alloy so that the shrinking state is maintained at room temperature and the diameter is expanded in response to the body temperature of the patient.

More specifically, the pressing member 30 is wound in a roll form at room temperature and expands and expands in response to the body temperature of the patient, thereby expanding the diameter.

The pressing member 30 is preferably made of a nitinol foil as a shape memory alloy using a sputtering deposition method.

The pressing member 30 made of the Nitinol thin film is heat-treated to have a shape memory ability that is deformable at 35 DEG C or lower and wound in a roll shape and expanded at 35 DEG C or higher.

The pressing member 30 is inserted into the inside of the tube member 20 in a compressed state so that the tube member 20 is always pressed against the inner wall of the stent member 10 It is possible.

A plurality of pores are formed in the pressing member 30 so that blood can flow through the pores after the tube member 20 is disassembled through the pores as described later.

The pressing member 30 is partially overlapped at both ends in an expanded state, so that a pressing force is applied to the entire inner wall of the tube member 20.

The length of the pressing member 30 is longer than the length of the tube member 20 and the length of the stent member 10 is longer than the length of the pressing member 30.

Thus, it is possible to prevent the movement of blood by the tube member 20 when the blood is moved in a state where the stent assembly of the present invention is mounted on the blood vessel.

Hereinafter, the installation method and the like of the present invention having the above-described configuration will be described.

First, as shown in Fig. 2, the pressing member 30 wound in a roll shape is inserted into the tube member 20.

Then, the tube member 20 is inserted into the stent member 10.

1 and 4 (a), the tube member 20 and the stent member 10 are kept in a contracted state because the pressing member 30 is in a room temperature state, It is possible to maintain the state in which the diameter thereof is not expanded.

When the assembly is completed as described above, the stent assembly is placed at the lesion position where the aneurysm 45 is formed as shown in FIG. 5 by using a separate delivery device.

When the body temperature of the patient is transmitted to the urging member 30 through the stent member 10 and the tube member 20, the urging member 30 is moved by the predetermined shape memory capacity as shown in Fig. 4 (b) And expanded as its diameter expands.

3 and 4 (b), the pressing member 30 presses the tube member 20 against the inner wall of the stent member 10, And the diameter of the stent member 10 are expanded.

The pressing member 30 presses the tube member 20 against the inner wall of the stent member 10 to press the tube member 20 between the pressing member 30 and the stent member 10 It can be fixed.

At this time, since both ends of the pressing member 30 are partially overlapped with each other in the expanded state, a pressing force can be applied to the entirety of the tube member 20 so as to be brought into close contact with the inner wall of the stent member 10.

Although the two ends of the pressing member 30 are partially overlapped with each other, the pressing member 30 is actually very thin, so that the entirety of the tube member 20 can be pressed without lifting .

Since the diameter of the tube member 20 and the diameter of the stent member 10 is expanded by the expansion of the pressing member 30, the stent member 10 can be brought into close contact with the blood vessel.

5, when the installation of the stent assembly in the blood vessel 40 is completed, the blood moves through the inside of the tube member 20 without moving to the aneurysm 45.

Therefore, blood is not supplied to the aneurysm 45, so that the aneurysm 45 is naturally deteriorated and removed.

Since the tube member 20 is made of a biodegradable polymer, the tube member 20 is decomposed by itself when the treatment of the aneurysm 45 is completed, and a plurality of pores are formed in the pressing member 30 The blood can be supplied to the pores formed in the pressing member 30 and other capillary vessels connected to the blood vessel 40 through the stent member 10 in a state in which the tube member 20 is disassembled.

Since the pressing member 30 is made of a shape memory alloy and is moved in a contracted state through the delivery device, the present invention can be easily inserted into the blood vessel 40 with a small diameter.

Since the present invention is disposed inside the stent member 10 without coating the nanofiber on the stent member 10, the physical load applied to the stent member 10 can be reduced, and the stent member 10 can be contracted It is possible to prevent the nanofibers coated on the stent member 10 from peeling off.

Further, since the thickness of the pressing member 30 made of the Nitinol thin film can be adjusted, the pressing force of the pressing member 30 can be realized according to the size of the blood vessel 40.

The stent assembly for treating an aneurysm of the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

10: stent member, 20: tube member, 30: pressure member, 40: blood vessel, 45:

Claims (8)

  1. A stent member made of metal and having a hollow shape;
    A hollow tube member made of polymer nanofibers and inserted in the stent member;
    And a pressing member inserted in the tube member and pressing the tube member against the inner wall of the stent member,
    The length of the pressing member is longer than the length of the tube member,
    Wherein the length of the stent member is longer than the length of the biasing member.
  2. The method according to claim 1,
    Wherein the pressing member presses the tube member while expanding in diameter,
    Wherein the stent member and the tube member are expanded in diameter by the urging force of the urging member.
  3. The method of claim 2,
    Wherein the pressing member is made of a shape memory alloy,
    Wherein the shunt is maintained at room temperature and the diameter is expanded in response to the body temperature of the patient.
  4. The method of claim 3,
    Wherein the pressing member is wound in a roll form at room temperature,
    Wherein the biasing member expands and expands in response to a patient ' s body temperature, thereby expanding the diameter of the stent assembly.
  5. The method of claim 3,
    Wherein the pressing member is a thin film of Nitinol.
  6. The method of claim 3,
    Wherein the tube member is made of a biodegradable polymer,
    Wherein the pressure member is formed with a plurality of pores through the stent assembly.
  7. The method of claim 4,
    Wherein the pressure member is partially overlapped at both ends in an expanded state.
  8. delete
KR1020160089012A 2016-07-14 2016-07-14 Stent assembly for treatment of aneurysm KR101778087B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160089012A KR101778087B1 (en) 2016-07-14 2016-07-14 Stent assembly for treatment of aneurysm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160089012A KR101778087B1 (en) 2016-07-14 2016-07-14 Stent assembly for treatment of aneurysm

Publications (1)

Publication Number Publication Date
KR101778087B1 true KR101778087B1 (en) 2017-09-13

Family

ID=59967503

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160089012A KR101778087B1 (en) 2016-07-14 2016-07-14 Stent assembly for treatment of aneurysm

Country Status (1)

Country Link
KR (1) KR101778087B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3625495B2 (en) * 1994-07-22 2005-03-02 テルモ株式会社 Luminal organ treatment device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3625495B2 (en) * 1994-07-22 2005-03-02 テルモ株式会社 Luminal organ treatment device

Similar Documents

Publication Publication Date Title
JP5046919B2 (en) Medical device
EP1355591B1 (en) Deployment system for intraluminal devices
US6254628B1 (en) Intracranial stent
ES2396699T3 (en) Deployment system for intraluminal devices
US7004962B2 (en) Neuroaneurysm occlusion and delivery device and method of using same
AU682772B2 (en) Stent
US6746475B1 (en) Stent with variable stiffness
US7037330B1 (en) Neurovascular stent and method
ES2331567T3 (en) Devices for the retention of glass-oclusive devices within an aneurism.
US10433851B2 (en) Braided vascular devices having no end clamps
EP1799146B1 (en) Thin film devices for occlusion of a vessel
JP4785841B2 (en) Endoluminal prosthesis for aneurysm occlusion and method of manufacturing the prosthesis
US8419787B2 (en) Implantable intraluminal device and method of using same in treating aneurysms
US7695488B2 (en) Expandable body cavity liner device
US5545210A (en) Method of implanting a permanent shape memory alloy stent
US20010000798A1 (en) Intravascular flow modifier and reinforcement device
EP1487381B1 (en) Flexible stent
US8491649B2 (en) Medical device including corrugated braid and associated method
EP1527753B1 (en) Neck covering device for an aneurysm
US20070255388A1 (en) Endovascular device with membrane
CN104487024B (en) Support and support delivery device
US20050096732A1 (en) Endovascular prosthesis
JP2008229374A (en) Wire frame partial flow obstruction device for aneurysm treatment
DE69837062T2 (en) Balloon expandable braided stent with retention device
CA2316606C (en) Hydraulic stent deployment system

Legal Events

Date Code Title Description
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant