CN108852574B - Tectorial membrane support restraint device - Google Patents
Tectorial membrane support restraint device Download PDFInfo
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- CN108852574B CN108852574B CN201810847789.2A CN201810847789A CN108852574B CN 108852574 B CN108852574 B CN 108852574B CN 201810847789 A CN201810847789 A CN 201810847789A CN 108852574 B CN108852574 B CN 108852574B
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- 210000002489 tectorial membrane Anatomy 0.000 title abstract description 5
- 239000012528 membrane Substances 0.000 claims abstract description 116
- 230000000149 penetrating effect Effects 0.000 claims abstract description 44
- 238000005491 wire drawing Methods 0.000 claims abstract description 33
- 238000005452 bending Methods 0.000 claims description 28
- 230000003902 lesion Effects 0.000 claims description 8
- 230000000452 restraining effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
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- 239000002356 single layer Substances 0.000 description 4
- 208000002251 Dissecting Aneurysm Diseases 0.000 description 3
- 210000000702 aorta abdominal Anatomy 0.000 description 3
- 210000002376 aorta thoracic Anatomy 0.000 description 3
- 206010002895 aortic dissection Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 210000000709 aorta Anatomy 0.000 description 2
- 208000007474 aortic aneurysm Diseases 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000036770 blood supply Effects 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000000115 thoracic cavity Anatomy 0.000 description 2
- 206010002329 Aneurysm Diseases 0.000 description 1
- 208000025494 Aortic disease Diseases 0.000 description 1
- 206010003210 Arteriosclerosis Diseases 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
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Classifications
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- 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
-
- 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
- A61F2/9522—Means for mounting a stent or stent-graft onto or into a placement instrument
Abstract
The invention relates to the technical field of medical treatment, in particular to a binding device for a covered stent. The tectorial membrane support restraint device includes: a cylindrical film sleeve; the membrane sleeve comprises a flexible membrane and a first rigid wire drawing; a plurality of first wire penetrating holes are sequentially arranged at intervals on the first end and the second end of the flexible membrane; the first rigid wire drawing is arranged in a plurality of first wire drawing holes on the first end and the second end in a penetrating way, so that the flexible membrane is curled and then fixed into a cylinder shape; the membrane sleeve is used for placing a membrane covered bracket. The invention provides the tectorial membrane bracket restraining and releasing device which is simple to operate, easy to produce and check, high in safety and flexible to use. The stent graft can be singly used or matched with other conveying systems, can be used for all or part of the restriction main body or the branch stent graft, can restrict the stent graft to different shapes or diameters according to the needs, can release the stent graft in sections or in parts according to the needs, and improves the accuracy of the release position and the uniformity of the expansion of the released stent graft.
Description
Technical Field
The invention relates to the technical field of medical treatment, in particular to a binding device for a covered stent.
Background
Aortic disease is a cardiovascular disease which seriously threatens human health, and comprises aortic dissection, aortic aneurysm and the like, and is mainly caused by hypertension, arteriosclerosis, injury, infection and the like, and has great threat to the life of patients, especially the aortic dissection which has wide lesion range and influences the blood supply of brain, spinal cord and multiple organs, has large operation wound, complex operation and long time, and has more blood consumption, and the complication occurrence rate of operation and the operation mortality rate are high. The reconstruction of the blood supply of the aorta and its branch arteries in as short a time as possible has been the goal sought by vascular surgeons.
Lesions of aortic dissection or aneurysm can be treated in a cavity, hybridization or surgical operation at present, a covered stent is used in the operation, the covered stent is pushed to a lesion part through a conveying system loaded with the covered stent, the covered stent is released to isolate the lesion aneurysm or dissection, and a blood channel is rebuilt, so that the treatment purpose is achieved. The loading and releasing modes of the covered stent are critical to the operation process and the postoperative effect, the operation convenience in the operation process is improved, the uniformity of stent deployment after stent release is improved, and the accuracy of release positioning is greatly affected.
Patent CN201611219500.X, US6352561 and WO95/26695 disclose a method for tightening and releasing a stent by means of a sleeve and a pull wire, respectively. The tightening process of the methods is complex, if errors occur in the threading process, the errors are not easy to detect, and the stent can not be released normally finally.
Disclosure of Invention
The invention aims to provide a binding device for a covered stent, which solves the technical problems of complex structure, easy error, long release stroke and low production efficiency of the binding device in the prior art.
The invention provides a covered stent binding device, which comprises: a cylindrical film sleeve; the membrane sleeve comprises a flexible membrane and a first rigid wire drawing; the flexible membrane comprises a first end and a second end which are oppositely arranged; the first end and the second end are respectively provided with a plurality of first wire penetrating holes at intervals along the edges of the first end and the second end; the first rigid wire drawing is arranged in a plurality of first wire drawing holes on the first end and the second end in a penetrating way, so that the flexible membrane is curled and then fixed into a cylinder shape; the membrane sleeve is internally used for placing a membrane covered bracket.
Further, the flexible membrane comprises a first sub-membrane, a second sub-membrane and a second rigid wiredrawing; one end of the first sub-membrane and one end of the second sub-membrane are sequentially provided with a plurality of second wire penetrating holes at intervals, the other end opposite to the end of the first sub-membrane is a first end of the flexible membrane, and the other end opposite to the end of the second sub-membrane is a second end of the flexible membrane; the second rigid wire drawing is arranged in a plurality of second wire penetrating holes on the first sub-membrane and the second sub-membrane in a penetrating mode so as to fix the first sub-membrane to form the flexible membrane.
Further, the depth direction of the first wire penetrating holes is parallel to the axis of the film sleeve, and the first end and the plurality of first wire penetrating holes on the second end are arranged in a staggered manner;
and/or the depth direction of the second wire penetrating holes is parallel to the axis of the film sleeve, and the first sub-film sheet and the plurality of second wire penetrating holes on the second sub-film sheet are arranged in a staggered manner.
Further, the flexible membrane comprises a fixing sheet and a plurality of fixing sleeves; the two opposite ends of the flexible membrane are respectively provided with a plurality of fixing sleeves at intervals along the edges of the ends; the axis of the fixed sleeve is parallel to the axis of the membrane sleeve; the first rigid wire drawing is arranged in the fixing sleeves in a penetrating mode; the inner cavity of the fixed sleeve forms the first threading hole;
and/or, the first sub-membrane and the second sub-membrane comprise connecting sheets and a plurality of connecting sleeves; one end of the connecting sheet is sequentially provided with a plurality of connecting sleeves at intervals; the axis of the connecting sleeve is parallel to the axis of the membrane sleeve; the second rigid wiredrawing is arranged in the connecting sleeves in a penetrating way; the inner cavity of the connecting sleeve forms the second threading hole.
Further, the depth direction of the first wire penetrating holes is the thickness direction of the first sub-membrane, and the first wire penetrating holes of the first end are aligned with the first wire penetrating holes of the second end one by one;
and/or the depth direction of the second wire penetrating holes is the thickness direction of the second sub-membrane, and the second wire penetrating holes of the first sub-membrane are aligned with the second wire penetrating holes of the second sub-membrane one by one.
Further, the flexible membrane is of a single-layer structure.
Further, the flexible membrane has a multi-layer structure with more than two layers.
Further, the first sub-membrane comprises a bending sheet and a connecting line; three rows of threading holes are sequentially arranged on the bending sheet at intervals; the first sub-membrane is folded from two ends of the bending sheet to the same direction so that three rows of threading holes are overlapped, and the connecting wire is arranged in the three overlapped rows of threading holes in a penetrating mode so that the bending sheet is fixed after being folded.
Further, two rows of folding holes are formed in the bending sheet, and the two rows of folding holes and the three rows of threading holes are arranged in a staggered manner; the first sub-membrane is formed by folding the bending sheet along the central line of the two rows of folding holes in the same direction; and the first threading hole or the second threading hole is formed after the interval between two adjacent folding holes is folded.
Further, the folding hole is rectangular or circular.
The invention provides a covered stent binding device which comprises a film sleeve, wherein after a flexible film is curled, a first rigid wire drawing is arranged in a first wire penetrating hole in a penetrating way so as to fix two ends of the flexible film, so that the film sleeve is formed. The covered stent is placed in the membrane sleeve and is conveyed to the lesion position through the conveyor. And (3) extracting the first rigid wiredrawing from the first wiredrawing hole, and gradually releasing the covered stent from the distal end to the proximal end.
According to the binding device for the covered stent, the first wire penetrating hole is formed in the flexible membrane and matched with the first rigid wire drawing, the structure is simple, the operation is convenient, the rapid processing can be realized, the production efficiency is improved, the mass production is convenient, knotting errors are not easy to occur, the release stroke is consistent with the foundation of the covered stent, and the release stroke is short. The patent provides a simple operation, easily production and inspection, the security is high, uses nimble tectorial membrane support restraint and release. The stent graft can be singly used or matched with other conveying systems, can be used for all or part of the restriction main body or the branch stent graft, can restrict the stent graft to different shapes or diameters according to the needs, can release the stent graft in sections or in parts according to the needs, and improves the accuracy of the release position and the uniformity of the expansion of the released stent graft.
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 structural view of a binding device for a covered stent provided by an embodiment of the present invention;
FIG. 2 is a schematic view of a part of the stent graft restraint device shown in FIG. 1;
fig. 3 is a schematic structural diagram of a bending sheet according to an embodiment of the present invention;
FIG. 4 is a schematic view of the folded bending sheet shown in FIG. 3;
FIG. 5 is a schematic view of the stent graft restraint device of FIG. 1 shown in a configuration in which the stent graft restraint device is gradually released from the distal end toward the proximal end;
fig. 6 is a schematic structural view of a stent graft restraint device according to an embodiment of the present invention applied to an abdominal aorta;
FIG. 7 is a schematic view of the secondary trunk of the stent graft restraint device shown in FIG. 6 after adjustment;
FIG. 8 is a schematic view of the stent graft restraint device of FIG. 7 during release;
fig. 9 is a schematic structural view of a stent graft restraint device according to an embodiment of the present invention applied to a thoracic aorta.
Reference numerals:
1-a membrane sleeve; 2-threading holes; 3-folding holes;
4-a stent graft; 5-branch vessels of the arch; 6-a main part;
7-auxiliary trunk parts; 8-abdominal aorta; 11-a membrane;
12-first rigid wiredrawing; 13-a first wire through hole; 111-a first sub-membrane;
112-a second sub-membrane; 113-a second rigid wiredrawing; 114-a second wire hole;
1111-bending sheet.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be 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.
Wherein, the proximal end refers to the end close to the heart in this patent, and the distal end refers to the end far away from the heart.
Fig. 1 is a schematic structural view of a binding device for a covered stent provided by an embodiment of the present invention; FIG. 2 is a schematic view of a part of the stent graft restraint device shown in FIG. 1; fig. 3 is a schematic structural diagram of a bending sheet according to an embodiment of the present invention; FIG. 4 is a schematic view of the folded bending sheet shown in FIG. 3; FIG. 5 is a schematic view of the stent graft restraint device of FIG. 1 shown in a configuration in which the stent graft restraint device is gradually released from the distal end toward the proximal end; as shown in fig. 1 to 5, the stent graft restraint device provided by the present invention includes: a cylindrical film sleeve 1; the membrane sleeve 1 comprises a flexible membrane 11 and a first rigid wiredrawing 12; the flexible membrane 11 comprises a first end and a second end arranged opposite each other; a plurality of first wire penetrating holes 13 are sequentially arranged at intervals along the edges of the first end and the second end on the first end and the second end respectively; the first rigid wire drawing 12 is arranged in a plurality of first wire penetrating holes 13 on the first end and the second end in a penetrating way, so that the flexible membrane 11 is curled and fixed into a cylinder shape; the membrane sleeve 1 is used for placing a membrane covered bracket 4.
The invention provides a covered stent binding device, which comprises a film sleeve 1, wherein after a flexible film 11 is curled, a first rigid wire drawing 12 is arranged in a first wire penetrating hole 13 in a penetrating way to fix two ends of the flexible film 11, so that the film sleeve 1 is formed. The covered stent 4 is placed in the membrane sleeve 1 and is conveyed to the lesion position by a conveyor. The first rigid wire 12 is withdrawn from the first wire-through hole 13, and the stent graft 4 is gradually released from the distal end to the proximal end.
According to the binding device for the covered stent, the first wire penetrating hole 13 is formed in the flexible membrane 11 and matched with the first rigid wire drawing 12, the structure is simple, the operation is convenient, the rapid processing can be realized, the production efficiency is improved, the mass production is convenient, knotting errors are not easy to occur, the release stroke is basically consistent with that of the covered stent 4, and the release stroke is short.
Wherein the membrane sleeve 1 can be cylindrical, and the cylindrical can be arranged along the axial variable diameter of the cylindrical.
Further, the material of the first rigid wire 12 may be stainless steel, nickel titanium, or the like.
Further, the membrane sleeve 1 may be made of medical materials such as terylene or e-PTFE.
Further, on the basis of the above embodiment, the flexible membrane 11 includes a first sub-membrane 111, a second sub-membrane 112, and a second rigid wiredrawing 113; one end of the first sub-membrane 111 and one end of the second sub-membrane 112 are sequentially provided with a plurality of second wire penetrating holes 114 at intervals, the other end opposite to the end of the first sub-membrane 111 is a first end of the flexible membrane 11, and the other end opposite to the end of the second sub-membrane 112 is a second end of the flexible membrane 11; the second rigid wire drawing 113 is arranged in a plurality of second wire penetrating holes 114 on the first sub-membrane 111 and the second sub-membrane 112 in a penetrating way so as to fix the first sub-membrane 111 to form the flexible membrane 11.
In this embodiment, the flexible membrane 11 includes a first sub-membrane 111 and a second sub-membrane 112, both ends of the first sub-membrane 111 and the second sub-membrane 112 are respectively provided with a first wire hole 13 and a second wire hole 114, and the first rigid wire 12 and the second rigid wire 113 are respectively threaded in the first wire hole 13 and the second wire hole 114 to fix the first sub-membrane 111 and the second sub-membrane 112 to form the membrane sleeve 1. After the film sleeve 1 is conveyed to the lesion position, the first rigid wire drawing 12 and the second rigid wire drawing 113 are respectively pulled out from the first wire through hole 13 and the second wire through hole 114, and the edges of the two ends of the first sub-film 111 and the second sub-film 112 are separated, so that the film covered stent 4 is gradually released from the distal end to the proximal end, and the two ends of the film covered stent 4 are simultaneously released, and the release mode can enable the film covered stent 4 to be unfolded more uniformly and not easy to form crescent concave.
Further, on the basis of the above embodiment, the depth direction of the first wire penetrating holes 13 is parallel to the axis of the film cover 1, and the first ends and the plurality of first wire penetrating holes 13 on the second ends are staggered;
and/or the depth direction of the second wire penetrating holes 114 is parallel to the axis of the film sleeve 1, and the first sub-film 111 and the plurality of second wire penetrating holes 114 on the second sub-film 112 are staggered.
In this embodiment, the depth direction of the first threading hole 13 is parallel to the axis of the membrane sleeve 1, and the first threading holes 13 on the first end and the second end are sequentially staggered, and the first threading wires sequentially pass through the first threading holes 13, so that the joint between the first end and the second end of the membrane sleeve 1 is tightly and flatly butted. Similarly, the second wire through hole 114 is arranged to enable the joint of the first sub-membrane 111 and the second sub-membrane 112 to be tightly and flatly butted.
Further, on the basis of the above embodiment, the flexible membrane 11 includes a fixing piece and a plurality of fixing sleeves; a plurality of fixed sleeves are sequentially arranged at intervals along the edges of the opposite ends of the flexible membrane 11 respectively; the axis of the fixed sleeve is parallel to the axis of the membrane sleeve 1; the first rigid wiredrawing 12 is arranged in the plurality of fixed sleeves in a penetrating way; the inner cavity of the fixed sleeve forms a first threading hole 13;
and/or, the first sub-membrane 111 and the second sub-membrane 112 each comprise a connecting piece and a plurality of connecting sleeves; one end of the connecting sheet is sequentially provided with a plurality of connecting sleeves at intervals; the axis of the connecting sleeve is parallel to the axis of the membrane sleeve 1; the second rigid wiredrawing 113 is arranged in the plurality of connecting sleeves in a penetrating way; the inner cavity of the connecting sleeve forms a second wire-through hole 114.
In this embodiment, the flexible membrane 11 includes a fixing sheet and a plurality of fixing sleeves, two ends of the fixing sheet are respectively provided with a plurality of fixing sleeves, and the first rigid wire drawing 12 is arranged in the plurality of fixing sleeves in a penetrating manner, so that the fixing sheet is curled and fixed into the film forming sleeve 1, that is, the fixing sheet can be a single layer or multiple layers, and the fixing sleeves are fixed on the fixing sheet, so that the structure is simple. Similarly, the first sub-membrane 111 and the second sub-membrane 112 have the same structural advantages as the connecting sheet and the plurality of connecting sleeves.
Further, based on the above embodiment, the depth direction of the first wire through holes 13 is the thickness direction of the first sub-membrane 111, and the plurality of first wire through holes 13 at the first end are aligned with the plurality of first wire through holes 13 at the second end one by one;
and/or, the depth direction of the second wire through holes 114 is the thickness direction of the second sub-film 112, and the plurality of second wire through holes 114 of the first sub-film 111 are aligned with the plurality of second wire through holes 114 of the second sub-film 112 one by one.
In this embodiment, the depth direction of the first wire hole 13 is the thickness direction of the first sub-film 111, and at this time, the first wire hole 13 can be formed by punching on the first sub-film 111, which is convenient for processing. The beneficial effects of the second wire through hole 114 are the same as above.
Further, the flexible membrane 11 has a single-layer structure on the basis of the above embodiment. Alternatively, the flexible film 11 has a multilayer structure of two or more layers.
In this embodiment, the flexible film 11 may be a single layer, and in this case, it is preferable that the depth direction of the first wire hole 13 is the thickness direction of the first sub-film 111, and the depth direction of the second wire hole 114 is the thickness direction of the second sub-film 112.
Further, the first sub-film 111 includes a bending piece 1111 and a connecting line; three rows of threading holes 2 are sequentially arranged on the bending sheet 1111 at intervals; the first sub-membrane 111 is folded in the same direction from both ends of the bending sheet 1111 to overlap the three rows of threading holes 2, and the connecting wire is threaded in the overlapped three rows of threading holes 2 to fold and fix the bending sheet 1111.
In this embodiment, the first sub-membrane 111 is formed by bending the bending sheet 1111 into a three-layer structure, and the three rows of threading holes 2 are fixedly threaded through connecting wires, so that the strength of the first sub-membrane 111 is enhanced, and meanwhile, the processing is convenient.
Further, the second sub-film sheet 112 has the same structure as the first sub-film sheet 111 described above.
Further, on the basis of the above embodiment, two rows of folding holes 3 are provided on the bending sheet 1111, and the two rows of folding holes 3 are staggered with the three rows of threading holes 2; the first sub-membrane 111 is formed by folding a bending sheet 1111 along the central lines of the two rows of folding holes 3 in the same direction; the first threading hole 13 or the second threading hole 114 is formed after the interval between the two adjacent folding holes 3 is folded.
In this embodiment, the folding hole 3 is formed on the bending sheet 1111, and the folding of the bending sheet 1111 makes the two ends of the folded bending sheet 1111 form the first wire through hole 13 and the second wire through hole 114 respectively, so that the steps are simple, and the processing efficiency is improved.
Further, on the basis of the embodiment, the folding hole 3 is rectangular or circular, so that the processing is convenient. Of course, the folding holes 3 can also have other shapes such as hexagons, and the manufacturer can select specific shape settings according to actual needs.
Fig. 6 is a schematic structural view of a stent graft restraint device according to an embodiment of the present invention applied to an abdominal aorta; FIG. 7 is a schematic view of the secondary trunk of the stent graft restraint device shown in FIG. 6 after adjustment; FIG. 8 is a schematic view of the stent graft restraint device of FIG. 7 during release; as shown in fig. 6 to 7, as one of the embodiments, the restraint device of the present invention may be applied to the abdominal aorta 8, where the membrane sleeve 1 is divided into a main portion 6 and a sub-main portion 7, the main portion 6 wrapping the main stent, and the sub-main portion 7 wrapping the sub-main stent. After the main trunk part 6 of the membrane sleeve is conveyed to a preset position through the sheath tube, the auxiliary trunk part 7 is adjusted to the other preset blood vessel, and the membrane sleeve 1 is released, so that the main trunk support and the auxiliary trunk support are respectively released and positioned in the corresponding blood vessel.
Fig. 9 is a schematic structural view of a stent graft restraint device applied to a thoracic aorta according to an embodiment of the present invention, as shown in fig. 9, as another embodiment, the stent graft restraint device of the present invention may also be applied to a branch vessel 5 for implanting a branch stent of an integrated single-branch thoracic aortic stent graft into a thoracic aortic arch, as described above.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (2)
1. A stent graft restraint device, comprising: a cylindrical film sleeve;
the membrane sleeve comprises a flexible membrane, a first rigid wire drawing and a second rigid wire drawing, wherein the flexible membrane comprises a semi-cylindrical first sub-membrane and a semi-cylindrical second sub-membrane which are oppositely arranged, a plurality of first wire holes are sequentially formed in the ends, close to the first sub-membrane and the second sub-membrane, of the flexible membrane at intervals along the axial direction, and a plurality of second wire holes are sequentially formed in the other ends, close to the first sub-membrane and the second sub-membrane, of the flexible membrane at intervals along the axial direction; one end of the first rigid wire drawing sequentially penetrates through the first wire penetrating holes from the distal end to the proximal end, and the second rigid wire drawing sequentially penetrates through the second wire penetrating holes, so that the flexible membrane is fixed into a cylinder after being curled; the film sleeve is internally used for placing a film covered bracket;
after the membrane sleeve is conveyed to a lesion position, the first rigid wire drawing and the second rigid wire drawing are pulled out of the first wire through hole and the second wire through hole, so that two ends of the membrane covered stent are released simultaneously;
the depth direction of the first wire penetrating holes is parallel to the axis of the film sleeve, and the first sub-film sheet and the plurality of first wire penetrating holes on the second sub-film sheet are arranged in a staggered manner;
and/or the depth direction of the second threading holes is parallel to the axis of the film sleeve, and the first sub-film sheet and a plurality of second threading holes on the second sub-film sheet are arranged in a staggered manner;
the first sub-membrane comprises a bending sheet and a connecting line; three rows of threading holes are sequentially arranged on the bending sheet at intervals; the first sub-membrane is folded in the same direction from the two ends of the bending sheet so that three rows of threading holes are overlapped, and the connecting wire is arranged in the three overlapped rows of threading holes in a penetrating way so as to fix the bending sheet after being folded;
two rows of folding holes are formed in the bending sheet, and the two rows of folding holes and the three rows of threading holes are arranged in a staggered manner; the first sub-membrane is formed by folding the bending sheet along the central line of the two rows of folding holes in the same direction; and the first threading hole or the second threading hole is formed after the interval between two adjacent folding holes is folded.
2. The stent graft restraint device of claim 1, wherein the folded aperture is rectangular or circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810847789.2A CN108852574B (en) | 2018-07-27 | 2018-07-27 | Tectorial membrane support restraint device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810847789.2A CN108852574B (en) | 2018-07-27 | 2018-07-27 | Tectorial membrane support restraint device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108852574A CN108852574A (en) | 2018-11-23 |
| CN108852574B true CN108852574B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810847789.2A Active CN108852574B (en) | 2018-07-27 | 2018-07-27 | Tectorial membrane support restraint device |
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|---|---|---|---|---|
| CN111329633B (en) * | 2018-12-18 | 2022-03-08 | 深圳市先健畅通医疗有限公司 | Implant and method of manufacturing the same |
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