CN112022429A - Branch artificial blood vessel repair system - Google Patents
Branch artificial blood vessel repair system Download PDFInfo
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- CN112022429A CN112022429A CN202011031000.XA CN202011031000A CN112022429A CN 112022429 A CN112022429 A CN 112022429A CN 202011031000 A CN202011031000 A CN 202011031000A CN 112022429 A CN112022429 A CN 112022429A
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- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 144
- 239000002473 artificial blood Substances 0.000 title claims abstract description 122
- 230000008439 repair process Effects 0.000 title claims abstract description 51
- 230000002792 vascular Effects 0.000 claims description 17
- 230000036285 pathological change Effects 0.000 abstract description 6
- 231100000915 pathological change Toxicity 0.000 abstract description 6
- 230000017531 blood circulation Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 210000002376 aorta thoracic Anatomy 0.000 description 5
- 230000003902 lesion Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 210000001367 artery Anatomy 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 208000019553 vascular disease Diseases 0.000 description 1
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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
- A61F2/02—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
- A61F2/064—Blood vessels with special features to facilitate anastomotic coupling
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- Health & Medical Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (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)
- Prostheses (AREA)
Abstract
The invention provides a branch artificial blood vessel repair system, which comprises at least one branch unit, wherein the branch unit comprises a base part and a branch part; the base part comprises a disc-shaped artificial blood vessel and an annular bracket, the disc-shaped artificial blood vessel is provided with at least one opening, and the annular bracket is arranged on the disc-shaped artificial blood vessel; the branch part comprises a first tubular artificial blood vessel and a first tubular support, one end of the first tubular artificial blood vessel is connected with one opening of the disc-shaped artificial blood vessel, the other end of the first tubular artificial blood vessel is far away from the base part and extends, and the first tubular support is arranged on the first tubular artificial blood vessel. Through the design, the branch part of the branch unit can be placed in the branch of the target blood vessel, and meanwhile, the pathological change part beside the branch opening can be covered through the base part, so that the requirement of repairing the pathological change part beside the branch opening is met on the premise of keeping smooth blood flow of the branch of the target blood vessel.
Description
Technical Field
The invention relates to the technical field of medical devices, in particular to a branch artificial blood vessel repair system.
Background
At present, in the treatment of vascular diseases, a stent artificial blood vessel can be placed in a vascular cavity through an intervention method, and the aim of repairing and reconstructing the blood vessel is achieved through lesion isolation. However, for the lesion beside the opening of the branch of the blood vessel, the patent of the branch of the blood vessel is required to be kept while the lesion is isolated, and the existing intervention repair structure cannot meet the requirement. Among these, existing interventional repair structures include occlusion of branch vessels, but require surgical bypass surgery or the use of an integrated branch stent. Surgical bypass surgery is a risk for surgical treatment. The adoption of the integrated branch support has the disadvantages of complex operation, high support positioning requirement, high risk of complication and the like, and is difficult to popularize and use at present.
Disclosure of Invention
It is a primary object of the present invention to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a branched artificial blood vessel repair system which is capable of satisfying the repair requirements, and which is simple to operate and has a reasonable structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to one aspect of the present invention, there is provided a bifurcated artificial vascular repair system; the branch artificial blood vessel repair system comprises at least one branch unit, wherein the branch unit comprises a base part and a branch part; the base part comprises a disc-shaped artificial blood vessel and an annular bracket, the disc-shaped artificial blood vessel is provided with at least one opening, and the annular bracket is arranged on the disc-shaped artificial blood vessel; the branch part comprises a first tubular artificial blood vessel and a first tubular support, one end of the first tubular artificial blood vessel is connected with one opening of the disc-shaped artificial blood vessel, the other end of the first tubular artificial blood vessel extends away from the base part, and the first tubular support is arranged on the first tubular artificial blood vessel.
According to one embodiment of the invention, the orthographic projection of the first tubular prosthesis on the plane of the disc-shaped prosthesis is located within the area of the disc-shaped prosthesis.
According to one embodiment of the invention, the angle between the axis of the first tubular vascular prosthesis and the plane of the disc-shaped vascular prosthesis is 75 ° to 105 °.
According to one embodiment of the present invention, the branching unit is plural, and plural branches extending into the target blood vessel through the branching portion, respectively; the two adjacent branches comprise a near-end branch and a far-end branch, for the branch unit corresponding to the near-end branch and the branch unit corresponding to the far-end branch, the near-end branch unit is provided with two openings, the branch part is connected with one opening, and the branch part of the far-end branch unit penetrates through the other opening of the near-end branch unit.
According to one embodiment of the present invention, the base is circular, and the two openings of the branching unit are spaced apart on a diameter path of the base; or the base is in an oval shape, and the two openings of the branch unit are spaced on the long-axis path of the base.
According to one embodiment of the present invention, the distance between the edges of the two openings of the branching unit is 1mm to 20 mm.
According to one embodiment of the present invention, the two openings of the branching unit include a first opening and a second opening, the first tubular vascular prosthesis of the branching unit is connected to the first opening, the second opening is provided with a cone structure connected to the disk-shaped vascular prosthesis, and the extension direction of the cone structure is the same as the extension direction of the first tubular vascular prosthesis.
According to one embodiment of the present invention, the taper pipe structure has a connecting end connected to the second opening and an extending end extending away from the base, and a ratio of a diameter of the connecting end to a diameter of the extending end is greater than 1 and less than or equal to 1.5.
According to one embodiment of the present invention, the branched artificial blood vessel repair system further comprises a trunk unit; the main unit comprises a second tubular artificial blood vessel and a second tubular stent, the second tubular artificial blood vessel is provided with an opening, and the second tubular stent is arranged on the second tubular artificial blood vessel; wherein the base portion of the branching unit is located within the second tubular artificial blood vessel, the branching portion protruding from the opening; wherein the width of the opening is greater than or equal to the outer diameter of the first tubular prosthesis and less than the width of the disc-shaped prosthesis.
According to one embodiment of the present invention, the branch units are multiple, the trunk unit is provided with one opening, and the branch portions of the branch units respectively extend out of the opening; or, the branch unit is multiple, the trunk unit is provided with multiple openings, and the branch parts of the branch units respectively extend out of the openings.
According to the technical scheme, the branch artificial blood vessel repair system has the advantages and positive effects that:
the invention provides a branch unit of a branch artificial blood vessel repair system, wherein the base part of the branch unit comprises a disc-shaped artificial blood vessel, the disc-shaped artificial blood vessel is provided with an opening, the branch part of the branch unit comprises a tubular artificial blood vessel, one end of the tubular artificial blood vessel is connected with one opening of the disc-shaped artificial blood vessel, and the other end of the tubular artificial blood vessel extends away from the base part. Through the design, the branch part of the branch unit can be placed in the branch of the target blood vessel, and meanwhile, the pathological change part beside the branch opening can be covered through the base part, so that the requirement of repairing the pathological change part beside the branch opening is met on the premise of keeping smooth blood flow of the branch of the target blood vessel.
Drawings
Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:
FIG. 1 is a schematic structural diagram illustrating a branched artificial vascular repair system according to an exemplary embodiment;
FIG. 2 is an exploded schematic view of three branching units of the branched prosthetic vascular repair system shown in FIG. 1;
FIG. 3 is a schematic diagram of a branching unit of the branched artificial blood vessel repair system shown in FIG. 1;
FIG. 4 is a schematic structural diagram of another branching unit of the branched artificial blood vessel repair system shown in FIG. 1;
fig. 5 is a schematic view of the intervention state of the branched artificial blood vessel repairing system shown in fig. 1 when the system is arranged on a target blood vessel.
The reference numerals are explained below:
110. a first branching unit;
111. a base;
1111. a disc-shaped artificial blood vessel;
1112. a ring-shaped scaffold;
1113. a first opening;
1114. a second opening;
112. a branching section;
1121. a first tubular vascular prosthesis;
1122. a first tubular stent;
113. a conical tube structure;
1131. a connecting end;
1132. an extension end;
120. a second branching unit;
130. a third branching unit;
140. a trunk unit;
141. an opening;
210. a target vessel trunk;
221. a first branch;
222. a second branch;
223. a third branch;
and alpha is included angle.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are accordingly to be regarded as illustrative in nature and not as restrictive.
In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.
Referring to fig. 1, a schematic structural diagram of a branched artificial blood vessel repair system according to the present invention is representatively illustrated. In the exemplary embodiment, the branch artificial blood vessel repair system proposed by the present invention is illustrated by taking the aortic branch applied to the aortic arch as an example. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to apply the inventive concepts described herein to other types of target vessels or other locations, and still be within the scope of the principles of the branched artificial vascular repair system set forth herein.
As shown in fig. 1, in the present embodiment, the branch artificial blood vessel repair system proposed by the present invention includes three branch units. Referring to fig. 2-5, fig. 2 representatively illustrates an exploded view of three branching units; FIG. 3 representatively illustrates a schematic diagram of the structure of a branching unit; a schematic diagram of the structure of another branching unit is representatively illustrated in fig. 4; fig. 5 representatively shows a schematic view of an intervention state when the branched artificial blood vessel repairing system is disposed in a target blood vessel. The structure, connection mode and functional relationship of the main components of the branched artificial blood vessel repair system proposed by the present invention will be described in detail below with reference to the above drawings.
As shown in fig. 1 to 4, in the present embodiment, each branching unit includes a base portion 111 and a branching portion 112. Specifically, the base 111 includes a disc-shaped artificial blood vessel 1111 and a ring-shaped stent 1112. The disc-shaped artificial blood vessel 1111 is provided with at least one opening. The ring-shaped stent 1112 is disposed on the disc-shaped vascular prosthesis 1111 to provide support to the disc-shaped vascular prosthesis 1111. The branch portion 112 includes a tubular artificial blood vessel and a tubular stent, and in order to distinguish the tubular artificial blood vessel and the tubular stent of the trunk unit 140 described below, the tubular artificial blood vessel of the branch portion 112 is defined as a first tubular artificial blood vessel 1121, and the tubular stent of the branch portion 112 is defined as a first tubular stent 1122 in the present specification. In order to distinguish between two or more openings provided in the disc-shaped artificial blood vessel 1111, one end of the first tubular artificial blood vessel 1121 is connected to one opening of the disc-shaped artificial blood vessel 1111, and in this specification, the opening to which the first tubular artificial blood vessel 1121 is connected is defined as a first opening 1113, and the other end of the first tubular artificial blood vessel 1121 extends away from the base 111. The first tubular stent 1122 is disposed on the first tubular prosthesis 1121 to provide support to the first tubular prosthesis 1121. Through the design, the branch part 112 of the branch unit can be placed in the branch of the target blood vessel, and meanwhile, the diseased part beside the branch opening can be covered through the base part 111, so that the requirement of repairing the diseased part beside the branch opening is met on the premise of keeping the smooth blood flow of the branch of the target blood vessel.
Alternatively, as shown in fig. 3, in the present embodiment, for each of the branch units (the configuration shown in fig. 3 is the first branch unit 110 as an example), the orthographic projection pattern of the first tubular artificial blood vessel 1121 on the plane where the disc-shaped artificial blood vessel 1111 is located may be located within the range of the disc-shaped artificial blood vessel 1111.
Alternatively, as shown in fig. 3, in the present embodiment, for each of the branch units (the structure shown in fig. 3 is the first branch unit 110 as an example), the angle α between the axis of the first tubular artificial blood vessel 1121 and the plane in which the disc-shaped artificial blood vessel 1111 is located may be 75 ° to 105 °, for example, 75 °, 90 °, 100 °, 105 °, and the like. In other embodiments, the included angle α between the axis of the first tubular artificial blood vessel 1121 and the plane of the disc-shaped artificial blood vessel 1111 may also be smaller than 75 °, or may be larger than 105 °, for example, 70 °, 110 °, and the like, and specifically may be selected according to different configurations of branches of the target blood vessel corresponding to the branch unit, and is not limited to this embodiment. Moreover, the included angles of the plurality of branch units may be different.
As shown in fig. 1 to 5, in the present embodiment, the application of the branch artificial blood vessel repair system provided by the present invention to the aortic branch of the aortic arch is taken as an example for description, and further, the side of all three aortic branches of the aortic arch has a lesion site to be repaired is taken as an example for description. In addition, in the present embodiment, the branched artificial blood vessel repair system includes three branching units. The three branch units respectively correspond to the three main artery branches, and for example, the three main artery branches are respectively a first branch 221, a second branch 222 and a third branch 223 distributed in the direction from the proximal end to the distal end of the main artery, and the three branch units are respectively a first branch unit 110 corresponding to the first branch 221, a second branch unit 120 corresponding to the second branch 222 and a third branch unit 130 corresponding to the third branch 223.
Specifically, as shown in fig. 1 to 5, in the present embodiment, the base 111 of the first branch unit 110 may have two openings, i.e., a first opening 1113 and a second opening 1114, the first opening 1113 is connected to the first tubular artificial blood vessel 1121, and may be of an integral structure, and the second opening 1114 is penetrated by the branch portion 112 of the second branch unit 120. The base 111 of the second branch unit 120 may also have two openings, one of which is used for connecting the tubular artificial blood vessel of the branch portion 112, and may also be an integrated structure, and the other of which is used for the branch portion 112 of the third branch unit 130 to pass through. The base 111 of the third branch unit 130 may have only one opening for connecting the tubular artificial blood vessel of the branch portion 112, and may also have an integral structure. With the above design, the branch portion 112 of the first branch unit 110 is disposed through the first branch 221, and the base portion 111 covers a region between the first branch 221 and the second branch 222 (i.e., a distal side of the first branch 221). The branch portion 112 of the second branch unit 120 is disposed through the second branch 222, and the base portion 111 covers a region between the second branch 222 and the third branch 223 (i.e., a distal side of the second branch 222). The branch portion 112 of the third branch unit 130 is disposed through the third branch 223, and the base portion 111 covers the distal side of the third branch 223.
In other embodiments, the proximal side of any branch can also be covered by the base by adjusting the relative positions of the base and the corresponding branch of the target blood vessel. In addition, taking three branches of the aortic arch as an example, when only one branch or a diseased region beside two branches needs to be repaired, the branched artificial blood vessel repair system may also only include two branch units, and the two branch units may be nested in the above manner according to the different diseased regions (for example, corresponding to the repair needs of the first branch side and the second branch side), or may be arranged at intervals without the nesting relationship (for example, corresponding to the repair needs of the first branch side and the third branch side). Moreover, the branch artificial blood vessel repair system may further include only one branch unit for responding to the repair requirement of any branch, i.e., the branch artificial blood vessel repair system provided by the present invention may include only one branch unit, which is not limited by the present embodiment.
Further, when the to-be-repaired position is, for example, the position of the aortic arch in the present embodiment, that is, when it is necessary to repair branches of two or more adjacent target blood vessels, the branched artificial blood vessel repair system proposed by the present invention may include two or more branching units for respectively extending into a plurality of branches of the target blood vessels through the branching portions. On this basis, for any two adjacent branches, the two branches are defined as a proximal branch and a distal branch along the flow direction of the target blood vessel, and for the branch unit corresponding to the proximal branch and the branch unit corresponding to the distal branch, the proximal branch unit may be provided with two openings, and the branch portion thereof is connected to one opening, the branch portion of the distal branch unit is inserted into the other opening of the proximal branch, and the distal branch unit may be provided with at least one opening. In addition, when the branched artificial blood vessel repair system includes only one branching unit, the branching unit may include only one opening, or may include two or more openings, all of which are not limited in this embodiment.
Further, as shown in fig. 3, based on the design of the branch unit having two openings, in the present embodiment, taking the first branch unit 110 as an example, the base 111 may be substantially circular to provide a better covering function for the lesion site beside the branch, further meeting the repair requirement. In this regard, the two openings of the branching unit may be spaced apart on a diameter path of the base 111. In other embodiments, the base 111 may have other shapes, such as an oval shape. On this basis, the two openings of the branch unit may be spaced apart from each other on the long axis path of the base 111.
Further, as shown in fig. 3, based on the design that the branching unit is provided with two openings, in the present embodiment, taking the first branching unit 110 as an example, the distance between the edges of the two openings of the branching unit may be 1mm to 20mm, for example, 1mm, 5mm, 10mm, 20 mm. In other embodiments, when the base 111 of the branching unit is provided with two openings, the distance between the edges of the two openings may also be less than 1mm, or may be greater than 20mm, such as 0.8mm, 25mm, etc., according to the structure of different types of target blood vessels or other application scenarios, which is not limited by the present embodiment.
Further, as shown in fig. 3, based on the design that the branch unit is provided with two openings, in the present embodiment, taking the first branch unit 110 as an example, the two openings of the branch unit include a first opening 1113 and a second opening 1114, the first tubular artificial blood vessel 1121 of the branch unit is connected to the first opening 1113, the second opening 1114 is provided with a conical structure 113 connected to the disc-shaped artificial blood vessel 1111, and the extending direction of the conical structure 113 is the same as the extending direction of the first tubular artificial blood vessel 1121. With the above design, when the branch portion 112 of an adjacent (e.g. distal end side in fig. 1) branch unit extends into the taper pipe structure 113 from the other side (opposite to the side of the branch portion 112) of the second opening 1114 of the base portion 111 of the branch unit, the taper pipe structure 113 can provide a guiding function for the branch portion 112 of the other branch unit extending into, so that the sleeving action of the adjacent branch units is more accurate and convenient.
It should be noted that the structure shown in FIG. 3 does not directly show the first opening 1113 and the second opening 1114, but rather the respective openings through the branch portion 112 and the cone structure 113 are shown schematically and are described herein.
Further, as shown in fig. 3, based on the design that the second bore 1114 is provided with the cone structure 113, in the present embodiment, the cone structure 113 has a connecting end 1131 connected to the second bore 1114 and an extending end 1132 extending away from the base 111, and on this basis, the ratio of the diameter of the connecting end 1131 to the diameter of the extending end 1132 is greater than 1 and less than or equal to 1.5, such as 1.05, 1.2, 1.4, 1.5. In other embodiments, the ratio of the diameter of the connecting end 1131 to the diameter of the extending end 1132 may also be greater than 1.5, such as 1.6, 1.8, and is not limited to this embodiment. In addition, the diameter of the extension end 1132 of the taper pipe structure 113 may be equal to or slightly larger than the outer diameter of the branch portion 112 of another branch unit sleeved therein.
Optionally, as shown in fig. 1 and fig. 5, in this embodiment, the branched artificial blood vessel repair system provided by the present invention may further include a trunk unit 140. Specifically, the trunk unit 140 can be inserted through the target blood vessel trunk 210, and the trunk unit 140 may include a tubular artificial blood vessel and a tubular stent, which are distinguished from the tubular artificial blood vessel and the tubular stent of the branch portion 112 of the branch unit, in this specification, the tubular artificial blood vessel of the trunk unit 140 is defined as a second tubular artificial blood vessel, and the tubular stent of the trunk unit 140 is defined as a second tubular stent. The second tubular artificial blood vessel is provided with an opening 141, and the second tubular stent is arranged on the second tubular artificial blood vessel. On this basis, the base portion 111 of the branch unit is located inside the second tubular artificial blood vessel, and the branch portion 112 protrudes from the opening 141. Wherein the width of the opening 141 may be greater than or equal to the outer diameter of the first tubular prosthesis 1121 and less than the width of the disc-shaped prosthesis 1111 of the branch portion 112.
Further, as shown in fig. 1 and fig. 5, based on the design that the branched artificial blood vessel repair system includes the trunk unit 140, in the present embodiment, when there are a plurality of branch units, the trunk unit 140 may be provided with one opening 141, for example, a rectangular opening. Accordingly, the branch portions 112 of the plurality of branch units can be respectively protruded from the openings 141. In other embodiments, when there are a plurality of branch units, the trunk unit 140 may have a plurality of openings, and the branch portions 112 of the branch units extend from the plurality of openings, which is not limited to this embodiment.
It should be noted herein that the branched artificial blood vessel repair systems illustrated in the drawings and described in the present specification are only a few examples of the many types of repair systems that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any details or any components of the branched artificial vascular repair system shown in the drawings or described in the present specification.
In summary, the branch artificial blood vessel repair system provided by the present invention includes a branch unit, a base portion of the branch unit includes a disc-shaped artificial blood vessel, the disc-shaped artificial blood vessel is provided with an opening, a branch portion of the branch unit includes a tubular artificial blood vessel, one end of the tubular artificial blood vessel is connected to one opening of the disc-shaped artificial blood vessel, and the other end of the tubular artificial blood vessel extends away from the base portion. Through the design, the branch part of the branch unit can be placed in the branch of the target blood vessel, and meanwhile, the pathological change part beside the branch opening can be covered through the base part, so that the requirement of repairing the pathological change part beside the branch opening is met on the premise of keeping smooth blood flow of the branch of the target blood vessel.
Exemplary embodiments of the branched artificial vascular repair system proposed by the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.
While the branched artificial vascular repair system of the present invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (10)
1. A bifurcated vascular prosthesis system, comprising at least one branching unit, the branching unit comprising:
the base part comprises a disc-shaped artificial blood vessel and an annular bracket, the disc-shaped artificial blood vessel is provided with at least one opening, and the annular bracket is arranged on the disc-shaped artificial blood vessel; and
the branch part comprises a first tubular artificial blood vessel and a first tubular support, one end of the first tubular artificial blood vessel is connected with one opening of the disc-shaped artificial blood vessel, the other end of the first tubular artificial blood vessel extends away from the base part, and the first tubular support is arranged on the first tubular artificial blood vessel.
2. The branched artificial blood vessel repair system according to claim 1, wherein an orthographic projection pattern of the first tubular artificial blood vessel on a plane in which the disk-shaped artificial blood vessel is located is within a range of the disk-shaped artificial blood vessel.
3. The branched artificial blood vessel repair system according to claim 1, wherein an angle between an axis of the first tubular artificial blood vessel and a plane in which the disc-shaped artificial blood vessel is located is 75 ° to 105 °.
4. The branched artificial blood vessel repair system according to any one of claims 1, wherein the branching unit is plural in number to extend into plural branches of the target blood vessel through the branching portion, respectively; the two adjacent branches comprise a near-end branch and a far-end branch, for the branch unit corresponding to the near-end branch and the branch unit corresponding to the far-end branch, the near-end branch unit is provided with two openings, the branch part is connected with one opening, and the branch part of the far-end branch unit penetrates through the other opening of the near-end branch unit.
5. The branched artificial blood vessel repair system of claim 4, wherein the base is circular, and the two openings of the branching unit are spaced apart on a diametrical path of the base; or the base is in an oval shape, and the two openings of the branch unit are spaced on the long-axis path of the base.
6. The branched artificial blood vessel repair system according to claim 4, wherein a distance between edges of the two openings of the branching unit is 1mm to 20 mm.
7. The branched artificial blood vessel repair system according to claim 4, wherein the two openings of the branching unit include a first opening and a second opening, the first tubular artificial blood vessel of the branching unit is connected to the first opening, the second opening is provided with a cone structure connected to the disk-shaped artificial blood vessel, and the extension direction of the cone structure is the same as the extension direction of the first tubular artificial blood vessel.
8. The branched artificial blood vessel repair system of claim 7, wherein the cone structure has a connecting end connected to the second aperture and an extending end extending away from the base, a ratio of a diameter of the connecting end to a diameter of the extending end being greater than 1 and less than or equal to 1.5.
9. The branched artificial blood vessel repair system according to any one of claims 1 to 8, further comprising:
the main unit comprises a second tubular artificial blood vessel and a second tubular stent, the second tubular artificial blood vessel is provided with an opening, and the second tubular stent is arranged on the second tubular artificial blood vessel;
wherein the base portion of the branching unit is located within the second tubular artificial blood vessel, the branching portion protruding from the opening;
wherein the width of the opening is greater than or equal to the outer diameter of the first tubular prosthesis and less than the width of the disc-shaped prosthesis.
10. The branched artificial blood vessel repair system according to claim 9, wherein the plurality of branch units are provided, the trunk unit is provided with one opening, and the branch portions of the plurality of branch units extend out of the opening respectively; or, the branch unit is multiple, the trunk unit is provided with multiple openings, and the branch parts of the branch units respectively extend out of the openings.
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| CN202011031000.XA CN112022429A (en) | 2020-09-27 | 2020-09-27 | Branch artificial blood vessel repair system |
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| CN202011031000.XA CN112022429A (en) | 2020-09-27 | 2020-09-27 | Branch artificial blood vessel repair system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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