CN119015011B - Abdominal aortic stent graft group - Google Patents
Abdominal aortic stent graft group Download PDFInfo
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- CN119015011B CN119015011B CN202411507129.1A CN202411507129A CN119015011B CN 119015011 B CN119015011 B CN 119015011B CN 202411507129 A CN202411507129 A CN 202411507129A CN 119015011 B CN119015011 B CN 119015011B
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- 230000003187 abdominal effect Effects 0.000 title claims description 24
- 210000002489 tectorial membrane Anatomy 0.000 claims abstract description 67
- 210000000702 aorta abdominal Anatomy 0.000 claims abstract description 10
- 238000005452 bending Methods 0.000 claims abstract description 9
- 241000251468 Actinopterygii Species 0.000 claims description 30
- 239000007888 film coating Substances 0.000 claims description 14
- 238000009501 film coating Methods 0.000 claims description 14
- 210000001503 joint Anatomy 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 7
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 4
- 208000002223 abdominal aortic aneurysm Diseases 0.000 abstract description 14
- 210000003090 iliac artery Anatomy 0.000 abstract description 14
- 208000007474 aortic aneurysm Diseases 0.000 abstract description 13
- 210000001105 femoral artery Anatomy 0.000 abstract description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 208000001750 Endoleak Diseases 0.000 description 2
- 206010064601 Iliac artery occlusion Diseases 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 2
- 206010064396 Stent-graft endoleak Diseases 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000002254 renal artery Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000004026 tunica intima Anatomy 0.000 description 1
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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- 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
- A61F2002/072—Encapsulated stents, e.g. wire or whole stent embedded in lining
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Prostheses (AREA)
Abstract
The invention provides an abdominal aorta tectorial membrane bracket set, which relates to the field of medical appliances and comprises a stable tectorial membrane bracket and a main body tectorial membrane bracket, wherein the stable tectorial membrane bracket comprises a transverse straight cylinder tectorial membrane bracket section, a longitudinal straight cylinder tectorial membrane bracket section, a conical tectorial membrane and an X-shaped bracket, one part of the X-shaped bracket is fixedly connected with the conical tectorial membrane, the other part of the X-shaped bracket is fixedly connected with the transverse straight cylinder tectorial membrane bracket section and extends to the tectorial membrane surface of one side of the transverse straight cylinder tectorial membrane bracket section, which is far away from the conical tectorial membrane, the main body tectorial membrane bracket comprises a main body cylindrical tectorial membrane and a main body bracket, at least one group of clamping pieces are fixedly connected to the far-end surface of the main body cylindrical tectorial membrane, in a combined state, the far-end opening of the main body cylindrical tectorial membrane is sleeved with the near-end opening of the longitudinal straight cylinder tectorial membrane bracket section, and the flanging of the clamping pieces are clamped at the bracket bending position of the near end of the longitudinal straight cylinder tectorial membrane bracket section. The invention can be applied to the abdominal aortic aneurysm intracavity repair operation of patients with the abdominal aortic aneurysm not involving the iliac arteries and difficult access of the unilateral femoral artery.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an abdominal aorta tectorial membrane bracket set.
Background
Implantation of an abdominal aortic stent graft into the lumen of an abdominal aortic aneurysm is the primary means of current endovascular repair of abdominal aortic aneurysms. In the prior art, to keep the abdominal aortic stent graft stable in the lumen of the tumor, whether or not the patient's lesion has an iliac artery, an iliac branch stent must be implanted in the bilateral iliac artery (even if the patient's abdominal aortic aneurysm has no access to the iliac artery, the prior art also requires an iliac branch stent to be implanted in the bilateral iliac artery to ensure the stability of the main body stent in the lumen of the tumor).
The disadvantages of the prior art include (1) complicated and long-term operation, the femoral artery is a direct continuation of the external iliac artery, the contralateral iliac branch stent needs to be implanted after the contralateral femoral artery is punctured during the operation, and the short leg of the main body stent needs to be butted, so that the risk of III-type endoleak exists, and the use cost of consumables is high, the risk of iliac artery occlusion is increased after the iliac branch stent is implanted due to the small size of the iliac artery, and (3) for patients with difficult unilateral femoral artery access, the iliac branch stent is not suitable to be implanted through femoral artery puncture, and the forced implantation can lead to rupture of the vascular intima and thrombosis.
Disclosure of Invention
The invention aims to provide an abdominal aorta covered stent group so as to alleviate the technical problems in the prior art.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical scheme:
the embodiment of the invention provides an abdominal aorta covered stent group, which comprises a stable covered stent and a main covered stent.
The stable film covered stent comprises a transverse straight tube film covered stent section, a longitudinal straight tube film covered stent section, a conical film covered and an X-shaped stent, wherein the diameter of the transverse straight tube film covered stent section is smaller than that of the longitudinal straight tube film covered stent section, a butt joint window is arranged on the side face of the transverse straight tube film covered stent section, a smaller diameter opening of the conical film covered is in sealing butt joint with the butt joint window, a distal end opening of the longitudinal straight tube film covered stent section is in sealing butt joint with a larger diameter opening of the conical film covered, the X-shaped stent comprises two annular stents which are mutually intersected and mutually fixed together at the intersection point, one part of the X-shaped stent is fixedly connected with the conical film covered, and the other part of the X-shaped stent is fixedly connected with the transverse straight tube film covered stent section and extends to the film covered surface of one side of the transverse straight tube film covered stent, which is far away from the conical film covered.
The main body tectorial membrane support comprises a main body tubular tectorial membrane and a main body support fixedly connected with the main body tubular tectorial membrane, wherein at least one group of clamping pieces symmetrically arranged along the radial direction of the main body tubular tectorial membrane are fixedly connected to the surface of the far end of the main body tubular tectorial membrane, and the clamping pieces are attached to the main body tubular tectorial membrane and are provided with turned edges turned up towards the direction deviating from the main body tubular tectorial membrane.
In the combined state, the far-end opening of the main body tubular tectorial membrane is sleeved with the near-end opening of the longitudinal straight tectorial membrane support section, and the flanging of the clamping piece is clamped and fixed at the support bending position of the near end of the longitudinal straight tectorial membrane support section.
The longitudinal straight tube tectorial membrane support section comprises a longitudinal straight tube tectorial membrane, a proximal end fish mouth support and a distal end fish mouth support, wherein the proximal end fish mouth support and the distal end fish mouth support are symmetrically distributed along the axial direction of the longitudinal straight tube tectorial membrane and fixedly connected to the surface of the longitudinal straight tube tectorial membrane. The near-end fish-mouth support and the far-end fish-mouth support respectively comprise two arc-shaped support units which are symmetrically arranged along the radial direction of the longitudinal straight tube tectorial membrane and are correspondingly connected with each other at the end parts, wherein an acute angle is formed between the plane where one arc-shaped support unit is located and the plane where the other arc-shaped support unit is located so as to form a fish-mouth shape. The fish mouth opening of the near-end fish mouth support faces to the near end, the fish mouth opening of the far-end fish mouth support faces to the far end, and the clamping piece is clamped and fixed on the far end side of the arc-shaped bending section of the near-end fish mouth support in a combined state.
Optionally, the proximal end fish-mouth support and the distal end fish-mouth support respectively comprise an inner ring fish-mouth support arranged on the inner surface of the longitudinal straight tube tectorial membrane and an outer ring fish-mouth support arranged on the outer surface of the longitudinal straight tube tectorial membrane.
Optionally, the horizontal straight section of thick bamboo tectorial membrane support section includes horizontal straight section of thick bamboo tectorial membrane and a plurality of wavy support ring of fixed connection in horizontal straight section of thick bamboo tectorial membrane, a plurality of wavy support rings are along the axial interval arrangement of horizontal straight section of thick bamboo tectorial membrane in the butt joint window both sides.
The main body tubular tectorial membrane comprises a proximal tectorial membrane section, a middle elastic tectorial membrane section and a distal tectorial membrane section which are sequentially connected in the axial direction, wherein the clamping piece is fixedly connected with the distal tectorial membrane section, the main body support comprises a proximal bare support, a proximal wire-wound support, a grid support and a distal wire-wound support which are sequentially arranged in the axial direction, the distal end of the proximal bare support is fixedly connected with the proximal end of the proximal tectorial membrane section, the proximal wire-wound support is fixedly connected with the proximal tectorial membrane section, the grid support is fixedly connected with the middle elastic tectorial membrane section, and the distal wire-wound support is fixedly connected with the distal tectorial membrane section.
Optionally, the distal wire wound support is disposed on an inner surface of the distal tectorial membrane section, the clamping member is disposed on an outer surface of the distal tectorial membrane section, and in a combined state, the clamping member is clamped and fixed at a bending position of the proximal support disposed on the inner surface of the longitudinal straight tectorial membrane.
Optionally, the proximal wire is disposed around the stent on an outer surface of the proximal tectorial membrane section.
Optionally, the proximal wirewound stent comprises at least one undulating stent ring.
Optionally, the fastening member adopts a diamond fastening ring, and the proximal end and the distal end of the fastening member respectively form the flanging.
Optionally, the distal wire-wound stent is a wavy stent ring.
The abdominal aortic tectorial membrane stent group provided by the embodiment of the invention can be applied to abdominal aortic aneurysm intracavity repair operation of patients with difficult access of the abdominal aortic aneurysm, no ilium artery and single femoral artery, and the specific operation steps and the functional effects which can be achieved by the structures of all parts are described in the detailed description part of the specification.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of an abdominal aortic stent graft set according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the overall structure of a stable stent graft in an abdominal aortic stent graft set according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of the structure of a longitudinal straight stent graft segment of the stent graft shown in FIG. 2;
FIG. 4 is a schematic view of the overall structure of the X-shaped stent in the stent graft shown in FIG. 2;
Fig. 5 is a schematic view of the overall structure of a main body stent graft in the abdominal aorta stent graft set according to the embodiment of the invention;
FIG. 6 is an enlarged view of a portion of the structure shown in FIG. 5;
FIG. 7 is a step diagram of implanting an abdominal aortic stent graft set provided in an embodiment of the present invention into a patient;
FIG. 8 is a second step of implanting an abdominal aortic stent graft set provided in an embodiment of the present invention into a patient;
FIG. 9 is a third step of implanting an abdominal aortic stent graft set provided in accordance with an embodiment of the present invention into a patient;
fig. 10 is a fourth step of implanting an abdominal aortic stent graft set provided in an embodiment of the present invention into a patient.
The icons are 100-steady covered stent, 200-main covered stent, 300-catheter, 400-guide wire, 500-conveyer sheath, 11-transverse straight covered stent section, 12-longitudinal straight covered stent section, 1211-proximal fish mouth stent, 1212-distal fish mouth stent, 13-conical covered stent, 14-X-shaped stent, 21-main cylindrical covered stent, 211-proximal covered stent section, 212-middle elastic covered stent section, 213-distal covered stent section, 22-main stent, 221-proximal bare stent, 222-proximal wire wound stent, 223-grid stent, 224-distal wire wound stent, 23-fastener, 231-flange.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that like reference numerals and letters refer to like items in the drawings, and thus once an item is defined in one drawing, no further definition or explanation thereof is necessary in subsequent drawings.
In describing the present invention, it should be noted that:
Unless specifically stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, or may be directly connected, or may be indirectly connected through intervening media, or may be in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The terms "first," "second," and the like, are used merely for distinguishing between descriptions, and not for indicating a total number, or a relative position in time and/or space, and are not to be construed as indicating or implying relative importance.
The terms "proximal," "distal," "transverse," "longitudinal," "axial," "radial," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, or that is conventionally laid down in the use of the inventive product, merely for convenience in describing the invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
In particular, some embodiments of the invention are described in detail with reference to the accompanying drawings.
The present embodiment provides an abdominal aortic stent graft set, referring to fig. 1 to 6, which includes a stable stent graft 100 and a main stent graft 200. The direction of blood flow from abdominal aorta to iliac branch artery is from proximal end to distal end, after the steady covered stent 100 and main covered stent 200 are respectively implanted into patient, the inflow end of blood flow of each stent is proximal end of the stent, the outflow end of blood flow is distal end of the stent, and after the abdominal aortic covered stent group is implanted into patient, the axial direction of the stent section (main covered stent 200) in abdominal aorta is longitudinal, and the direction perpendicular to the direction is transverse, concretely, as shown in fig. 1-6, the steady covered stent 100 comprises a transverse straight covered stent section 11, a longitudinal straight covered stent section 12, a conical covered stent 13 and an X-shaped stent 14, the diameter of the transverse straight covered stent section 11 is smaller than that of the longitudinal straight covered stent section 12, a butting window is arranged on the side surface of the transverse straight covered stent section 11, the smaller diameter opening of the conical covered stent 13 is in sealed butting with the butting window on the side surface of the transverse straight covered stent section 11, the distal opening of the longitudinal straight covered stent section 12 and the circular conical covered stent section 13 are in sealed butting relation, and the two crossed straight covered stent sections 13 are fixedly connected with one another, and the two crossed straight covered stent sections 14 are fixedly connected with one another, and the two crossed straight covered stent sections 13 and the two crossed straight covered stent sections are in a certain shape, and the two crossed straight covered stent sections are connected with one another, and the two straight covered stent sections are in a sealing section and a sealing shape, and a sealing covering stent is formed.
The main body film coating bracket 200 comprises a main body cylindrical film coating 21 and a main body bracket 22 fixedly connected to the main body cylindrical film coating 21, wherein at least one group of clamping pieces 23 symmetrically arranged along the radial direction of the main body cylindrical film coating 21 are fixedly connected to the far end surface of the main body cylindrical film coating 21, and the clamping pieces 23 are attached to the main body cylindrical film coating 21 and are provided with flanges 231 turned up towards the direction away from the main body cylindrical film coating 21.
In the combined state, the distal end opening of the main body cylindrical film covered 21 of the main body film covered stent 200 is sleeved with the proximal end opening of the longitudinal straight film covered stent section 12 of the stable film covered stent 100, and the flange 231 of the clamping piece 23 is clamped and fixed at the stent bending position of the proximal end of the longitudinal straight film covered stent section 12.
The abdominal aortic stent graft set provided in this embodiment can be applied to an abdominal aortic aneurysm endovascular repair operation of a patient with an abdominal aortic aneurysm without the iliac artery and a difficult access to a single-sided femoral artery, and the specific operation steps thereof refer to fig. 7 to 10, wherein the first step, refer to fig. 7, femoral artery puncture, the guide wire 400 is sent to the iliac bifurcation position along the femoral artery through the catheter 300, the "everting" operation is performed in cooperation with the catheter 300, the guide wire 400 is selected into the contralateral iliac artery, the second step, refer to fig. 8, the catheter 300 is withdrawn, the conveyer sheath 500 is sent to the target position along the guide wire 400, the third step, refer to fig. 9, the steady stent graft 100 is released, and the fourth step, refer to fig. 10, the guide wire 400 is penetrated out from the proximal opening of the longitudinal straight stent graft segment 12 of the steady stent graft 100, the conveyer sheath 500 is implanted into the main body stent graft 200 along the guide wire 400, and finally the distal opening of the main body tubular stent graft 21 is sleeved with the proximal opening of the longitudinal straight stent segment 12, and the longitudinal flange 231 of the clip 23 is clipped at the proximal end of the proximal stent segment of the steady stent graft segment 12.
Aiming at the patients with the abdominal aortic aneurysm not involving the iliac arteries and the difficulty in entering the unilateral femoral artery, the iliac branch stent is implanted in the two-sided iliac arteries during the intra-cavity repair operation of the abdominal aortic aneurysm in the prior art, and the abdominal aortic tectorial membrane stent group provided by the embodiment is adopted for operation, so that the iliac branch stents are not required to be respectively implanted in the two-sided iliac arteries, and the operation can be completed only through penetrating the unilateral femoral artery into the way, and the method has the following beneficial effects:
(1) The operation is simple and convenient, and the operation time is short;
(2) The main body covered stent 200 is supported and positioned by bending the transverse straight tube covered stent section 11 of the stable covered stent 100, and a larger-size iliac branch stent does not need to be implanted into the bilateral iliac arteries, so that the risk of iliac artery occlusion, rupture of an intravascular membrane and thrombus caused by implantation of the larger-size iliac branch stent is avoided;
(3) After implantation, the two stent graft modules of the stable stent graft 100 and the main stent graft 200 are butted at the proximal part of the iliac artery branch, no large included angle exists at the butted part, and the two stent graft modules are clamped and fixed through the clamping piece 23 to prevent displacement and leakage, so that the risk of III-type internal leakage is reduced, and the bleeding of a patient is reduced;
(4) In the stable covered stent 100, a part of the X-shaped stent 14 is fixedly connected to the conical covered film 13, another part of the X-shaped stent 14 is fixedly connected to the transverse straight-tube covered film stent section 11 and extends to the covered film surface of one side of the transverse straight-tube covered film stent section 11, which is away from the conical covered film 13, so that the conical covered film 13 can be effectively radially supported by the X-shaped stent 14, the stable covered film stent 100 can achieve smaller compression volume (during compression, the stable covered film stent 100 is compressed along the radial direction of the transverse straight-tube covered film stent section 11 in the stable covered film stent 100, namely, the axial direction of the longitudinal straight-tube covered film stent section 12), the size of the conveyer sheath 500 is reduced, the conveyer sheath 500 is facilitated to pass through a tortuous blood vessel, and the operation smoothness is improved.
In the abdominal aortic stent graft set provided in this embodiment, optionally, the longitudinal straight tube stent graft segment 12 of the stable stent graft 100 includes a longitudinal straight tube stent graft, a proximal end fish-mouth stent 1211 and a distal end fish-mouth stent 1212, where the proximal end fish-mouth stent 1211 and the distal end fish-mouth stent 1212 are symmetrically distributed along the axial direction of the longitudinal straight tube stent graft and fixedly connected to the surface of the longitudinal straight tube stent graft. The proximal end fish-mouth support 1211 and the distal end fish-mouth support 1212 respectively comprise two arc-shaped support units which are symmetrically arranged along the radial direction of the longitudinal straight tube film and the ends of which are correspondingly connected, wherein the plane of one arc-shaped support unit and the plane of the other arc-shaped support unit form an acute angle to form a fish-mouth shape, the fish-mouth opening of the proximal end fish-mouth support 1211 faces to the proximal end, the fish-mouth opening of the distal end fish-mouth support 1212 faces to the distal end, and the clamping piece 23 is clamped and fixed on the distal end side of the arc-shaped bending section of the proximal end fish-mouth support 1211 in the combined state. In this alternative structure, by providing the proximal end fishmouth stent 1211 and the distal end fishmouth stent 1212 in such a structure, the longitudinal straight tube stent graft can be prevented from being shortened while providing a larger radial supporting force for the longitudinal straight tube stent graft, and the whole of the stable stent graft 100 is conveniently compressed in the conveyer sheath 500 for conveying, and during compression, the stable stent graft 100 is compressed along the radial direction of the transverse straight tube stent segment 11 in the stable stent graft 100, i.e. the axial direction of the longitudinal straight tube stent segment 12, and because the stent portions of the longitudinal straight tube stent segment 12 are the proximal end fishmouth stent 1211 and the distal end fishmouth stent 1212 which are longitudinally and oppositely arranged, the longitudinal straight tube stent segment 12 can be pressed as closely as possible to the outer surface of the stent graft of the transverse straight tube stent segment 11, thereby enabling the stable stent graft 100 to achieve a minimum compressed volume, further reducing the size of the conveyer sheath 500 and being more beneficial to improving the smoothness of operation of the conveyer sheath 500 through tortuous vessels.
In this embodiment, in order to further improve the supporting force of the released longitudinal straight tube film covered stent section 12 to further improve the sealing performance, it is preferable, but not limited to, that the proximal end fish mouth stent 1211 and the distal end fish mouth stent 1212 respectively include an inner ring fish mouth stent disposed on the inner surface of the longitudinal straight tube film and an outer ring fish mouth stent disposed on the outer surface of the longitudinal straight tube film, and the longitudinal straight tube film is clamped between the inner ring fish mouth stent and the outer ring fish mouth stent.
In an alternative implementation manner of this embodiment, for the stable covered stent 100, the transverse straight-tube covered stent section 11 includes a transverse straight-tube covered membrane and a plurality of wavy stent rings fixedly connected to the transverse straight-tube covered membrane, and the wavy stent rings are arranged at two sides of the docking window at intervals along the axial direction of the transverse straight-tube covered membrane, so that the transverse straight-tube covered stent section 11 has better flexibility, and is easier to bend to complete "mountain turning".
In an alternative implementation manner of this embodiment, for the main body stent graft 200, in order to better adapt to and locate in the abdominal aortic aneurysm cavity, referring to fig. 5 and 6, and referring to fig. 10, the main body tubular stent graft 21 includes a proximal stent graft 211, a middle elastic stent graft 212 and a distal stent graft 213 sequentially connected in axial direction, the fastening member 23 is fixedly connected to the distal stent graft 213, the main body stent 22 includes a proximal bare stent 221, a proximal wire-wound stent 222, a grid stent 223 and a distal wire-wound stent 224 sequentially arranged in axial direction, the distal end of the proximal bare stent 221 is fixedly connected to the proximal end of the proximal stent graft 211 to perform an anchoring function, meanwhile, the bare stent does not shade the renal artery branch vessels on both sides of the abdominal aorta, the proximal wire-wound stent 222 is fixedly connected to the proximal stent graft 211 to provide supporting force while taking account of flexibility, the grid stent 223 is fixedly connected to the middle elastic stent graft 212 to enable the segments to be elastically compressed to adjust the overall length of the main body stent graft 200, and the distal wire-wound stent 224 is fixedly connected to the distal wire-wound stent 224 while simultaneously providing flexibility. In this alternative embodiment, the middle elastic tectorial membrane section 212 and the grid bracket 223 are provided, so that the telescopic characteristic of the grid bracket is utilized to adjust the overall length of the main body tectorial membrane bracket 200 after being released in the abdominal aortic aneurysm cavity, so as to adapt to different patient requirements.
As a further alternative and preferred, the distal wire-wound stent 224 of the main body stent graft 200 is disposed on the inner surface of the distal stent graft 213, the fastening members 23 are disposed on the outer surface of the distal stent graft 213, and in the assembled state, the fastening members 23 are fastened to the bent portions of the proximal stent disposed on the inner surface of the longitudinal straight stent graft of the stationary stent graft 100, so as to form a butt-joint structure in which the distal end of the main body stent graft 200 is inserted into and fixed to the proximal end of the longitudinal straight stent graft 12 in the stationary stent graft 100. Further, optionally, a proximal wire-wound stent 222 is provided on the outer surface of the proximal covered segment 211 to ensure that the proximal covered segment 211 conforms to the inner wall at the entrance of the abdominal aortic aneurysm cavity, reducing I-shaped endoleak, and further, optionally but not limited to comprising at least one undulating stent ring for the specific configuration of the proximal wire-wound stent 222, optionally but not limited to, the distal wire-wound stent 224 is an undulating stent ring.
For the specific configuration of the fastener 23, preferably, but not limited to, a diamond-shaped fastener ring as shown in fig. 5 and 6, the proximal and distal ends of which form the flange 231, respectively.
It should be noted that the above embodiments and the optional embodiments thereof in the present specification are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the foregoing optional embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention, and in addition, it is emphasized again that the features of the embodiments and the optional embodiments in the present specification may be mutually combined without conflict.
Claims (10)
1. An abdominal aorta covered stent group is characterized by comprising a stable covered stent (100) and a main covered stent (200);
The stable film covered stent (100) comprises a transverse straight barrel film covered stent section (11), a longitudinal straight barrel film covered stent section (12), a conical film covered stent (13) and an X-shaped stent (14), wherein the diameter of the transverse straight barrel film covered stent section (11) is smaller than that of the longitudinal straight barrel film covered stent section (12), a butt joint window is arranged on the side surface of the transverse straight barrel film covered stent section (11), a smaller diameter opening of the conical film covered stent (13) is in sealing butt joint with the butt joint window, a distal end opening of the longitudinal straight barrel film covered stent section (12) is in sealing butt joint with a larger diameter opening of the conical film covered stent (13), the X-shaped stent (14) comprises two annular stents which are mutually intersected and mutually fixed together, one part of the X-shaped stent (14) is fixedly connected with the conical film covered stent (13), and the other part of the X-shaped stent (14) is fixedly connected with the transverse straight barrel film covered stent section (11) and extends to one side of the transverse straight barrel film covered stent section (11) which is far away from the film covered by the conical film covered stent (13);
The main body film coating bracket (200) comprises a main body cylindrical film coating (21) and a main body bracket (22) fixedly connected with the main body cylindrical film coating (21), wherein at least one group of clamping pieces (23) which are symmetrically arranged along the radial direction of the main body cylindrical film coating (21) are fixedly connected to the far end surface of the main body cylindrical film coating (21), and the clamping pieces (23) are attached to the main body cylindrical film coating (21) and are provided with flanging (231) which are turned up towards the direction deviating from the main body cylindrical film coating (21);
In the combined state, the distal end opening of the main body tubular film (21) is sleeved with the proximal end opening of the longitudinal straight tube film support section (12), and the flanging (231) of the clamping piece (23) is clamped and fixed at the support bending position of the proximal end of the longitudinal straight tube film support section (12).
2. The abdominal aortic stent graft set according to claim 1, wherein:
the longitudinal straight tube tectorial membrane bracket section (12) comprises a longitudinal straight tube tectorial membrane, a proximal end fish mouth bracket (1211) and a distal end fish mouth bracket (1212);
The near-end fish mouth bracket (1211) and the far-end fish mouth bracket (1212) are symmetrically distributed along the axial direction of the longitudinal straight tube tectorial membrane and are fixedly connected to the surface of the longitudinal straight tube tectorial membrane;
The near-end fish-mouth bracket (1211) and the far-end fish-mouth bracket (1212) respectively comprise two arc-shaped bracket units which are symmetrically arranged along the radial direction of the longitudinal straight tube tectorial membrane and are correspondingly connected at the end parts, wherein an acute angle is formed between the plane of one arc-shaped bracket unit and the plane of the other arc-shaped bracket unit so as to form a fish-mouth shape;
the fish mouth opening of the near-end fish mouth bracket (1211) faces to the near end, the fish mouth opening of the far-end fish mouth bracket (1212) faces to the far end, and the clamping piece (23) is clamped and fixed on the far end side of the arc-shaped bending section of the near-end fish mouth bracket (1211) in the combined state.
3. The abdominal aortic stent graft set according to claim 2, wherein the proximal end fish mouth stent (1211) and the distal end fish mouth stent (1212) comprise an inner ring fish mouth stent disposed on the inner surface of the longitudinal straight tube stent graft and an outer ring fish mouth stent disposed on the outer surface of the longitudinal straight tube stent graft, respectively.
4. The abdominal aortic stent graft set according to claim 1, wherein the transverse straight-tube covered stent section (11) comprises a transverse straight-tube covered membrane and a plurality of wavy stent rings fixedly connected to the transverse straight-tube covered membrane, and the plurality of wavy stent rings are arranged at two sides of the butt-joint window at intervals along the axial direction of the transverse straight-tube covered membrane.
5. The abdominal aortic stent graft set according to claim 1, wherein:
The main body cylindrical film (21) comprises a proximal film covering section (211), a middle elastic film covering section (212) and a distal film covering section (213) which are sequentially connected in the axial direction, and the clamping piece (23) is fixedly connected to the distal film covering section (213);
the main body bracket (22) comprises a proximal bare bracket (221), a proximal wire winding bracket (222), a grid bracket (223) and a distal wire winding bracket (224) which are sequentially arranged in the axial direction;
the distal end of the proximal bare stent (221) is fixedly connected to the proximal end of the proximal tectorial membrane section (211), the proximal wire winding stent (222) is fixedly connected to the proximal tectorial membrane section (211), the grid stent (223) is fixedly connected to the middle elastic tectorial membrane section (212), and the distal wire winding stent (224) is fixedly connected to the distal tectorial membrane section (213).
6. The abdominal aortic stent graft set according to claim 5, wherein the distal wire-wound stent (224) is disposed on an inner surface of the distal stent graft segment (213), the fastening member (23) is disposed on an outer surface of the distal stent graft segment (213), and in a combined state, the fastening member (23) is fastened to a proximal stent bend disposed on an inner surface of the longitudinal straight stent graft.
7. The abdominal aortic stent graft set according to claim 5, wherein the proximal wire-wound stent (222) is provided on an outer surface of the proximal stent graft segment (211).
8. The abdominal aortic stent graft set of claim 5, wherein the proximal wirewound stent (222) comprises at least one undulating stent ring.
9. The abdominal aortic stent graft set according to claim 5, wherein the clamping member (23) is a diamond-shaped clamping ring, and the proximal end and the distal end of the clamping member respectively form the flanges (231).
10. The abdominal aortic stent graft set of claim 9, wherein the distal wire-wound stent (224) is a undulating stent ring.
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| CN202411507129.1A CN119015011B (en) | 2024-10-28 | 2024-10-28 | Abdominal aortic stent graft group |
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| CN202411507129.1A CN119015011B (en) | 2024-10-28 | 2024-10-28 | Abdominal aortic stent graft group |
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| CN205215447U (en) * | 2015-11-04 | 2016-05-11 | 许尚栋 | Modular abdominal aorta tectorial membrane support |
| CN106923931B (en) * | 2015-12-31 | 2019-12-10 | 先健科技(深圳)有限公司 | Covered stent |
| CN109717986B (en) * | 2017-10-31 | 2021-07-02 | 上海微创心脉医疗科技股份有限公司 | Branch type tectorial membrane support and branch type tectorial membrane support system |
| CN114052981B (en) * | 2020-07-29 | 2024-08-16 | 上海苏畅医疗科技有限公司 | A coated stent and a coating method |
| CN217338975U (en) * | 2022-04-14 | 2022-09-02 | 上海微创心脉医疗科技(集团)股份有限公司 | Covered stent and stent component |
| CN117281656A (en) * | 2023-04-28 | 2023-12-26 | 杭州唯强医疗科技有限公司 | Tectorial membrane support and tectorial membrane support system |
| CN117281657A (en) * | 2023-04-28 | 2023-12-26 | 杭州唯强医疗科技有限公司 | Tectorial membrane support and support subassembly |
| CN116725614B (en) * | 2023-08-16 | 2023-11-17 | 北京华脉泰科医疗器械股份有限公司 | Tumor cavity inner support group |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105213074A (en) * | 2015-10-21 | 2016-01-06 | 湖南埃普特医疗器械有限公司 | A kind of overlay film frame and using method thereof |
| CN106580518A (en) * | 2016-12-20 | 2017-04-26 | 有研医疗器械（北京）有限公司 | Combined abdominal aorta covered stent system and utilization method thereof |
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