CN106539606B - False cavity plugging device - Google Patents
False cavity plugging device Download PDFInfo
- Publication number
- CN106539606B CN106539606B CN201710008180.1A CN201710008180A CN106539606B CN 106539606 B CN106539606 B CN 106539606B CN 201710008180 A CN201710008180 A CN 201710008180A CN 106539606 B CN106539606 B CN 106539606B
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- Prior art keywords
- columnar structure
- prosthetic
- edge
- occlusion device
- aortic dissection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002184 metal Substances 0.000 claims abstract description 8
- 230000017531 blood circulation Effects 0.000 claims description 15
- 208000002251 Dissecting Aneurysm Diseases 0.000 claims description 11
- 206010002895 aortic dissection Diseases 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 10
- 210000004204 blood vessel Anatomy 0.000 abstract description 4
- 239000010408 film Substances 0.000 description 9
- 238000002224 dissection Methods 0.000 description 5
- 208000034693 Laceration Diseases 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 3
- 210000000709 aorta Anatomy 0.000 description 3
- 238000009954 braiding Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 206010002329 Aneurysm Diseases 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 201000002818 limb ischemia Diseases 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001732 thrombotic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12027—Type of occlusion
- A61B17/12031—Type of occlusion complete occlusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/1214—Coils or wires
- A61B17/12145—Coils or wires having a pre-set deployed three-dimensional shape
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12159—Solid plugs; being solid before insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00867—Material properties shape memory effect
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a false cavity plugging device which is of a hollow columnar structure as a whole, wherein the outer wall of the columnar structure is woven by metal wires, and the cross section of the columnar structure is surrounded by a first edge with larger curvature and a second edge with smaller curvature. In the practical application scene, one side of the interior of the false cavity, which is close to the original blood vessel wall, is close to an arc shape, namely the curvature is larger, and the curvature is smaller because of the elasticity or slight tightness of the tissue, the false cavity plugging device is improved to be similar to a semi-cylindrical structure by considering the point, so that the fitting effect with the inner wall of the false cavity can be improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an aortic dissection false cavity plugging device.
Background
The aorta is the thickest artery in the human body. Aortic dissection (aortic dissection) is due to the breach of the intima and media of the aorta, and the blood flow enters the aortic wall causing delamination in the vessel wall. In general, acute onset is caused, and the acute phase hazard is that the interlayer can directly cause rupture and massive hemorrhage of the aorta to die; secondly, dissection may involve important branch vessels or cause occlusion of the true lumen resulting in critical or disabling organs and limb ischemia. Unfortunately, patients in the acute phase, as the aortic wall is destroyed, a dissection aneurysm develops, eventually rupturing and dying. Thus, solving the dissection breach occlusion and false lumen occlusion problems can prevent dissection or dissection aneurysms from rupturing.
Patent publication CN102415909B discloses a prosthetic cavity occluder comprising a plurality of struts, wherein at least one of the plurality of struts has a middle strut portion having two or more multilevel struts. The basic working principle of the invention is that after compression, the device is conveyed to the aortic laceration through the conveying system, and enters the false cavity through the aortic laceration under the traction of the conveying system, and the expansion of the occluder is realized in the false cavity, the single prop bows to form an arch shape, the whole body forms a shuttle shape, and after the expansion, the occlusion of the aortic interlayer laceration can be well realized, and further, thrombus is formed in the false cavity, so that blood does not enter the false cavity any more. The prosthetic cavity gradually becomes thrombotic after being blocked, and the occluder also contracts and remains in the middle membrane layer. However, the cross section of the occluder is not perfectly fit with the inner wall of the false cavity, so that the treatment effect is affected.
Disclosure of Invention
The invention provides a false cavity plugging device with improved shape, which can adapt to the internal shape of a false cavity and improve the plugging effect.
The utility model provides a false chamber plugging device, is hollow columnar structure on the whole, columnar structure's outer wall is woven by the wire and is formed, and columnar structure's cross section is enclosed by the great first limit of camber and the less second limit of camber.
In the practical application scene, one side of the interior of the false cavity, which is close to the original blood vessel wall, is close to an arc shape, namely the curvature is larger, and the curvature is smaller because of the elasticity or slight tightness of the tissue, the false cavity plugging device is improved to be similar to a semi-cylindrical structure by considering the point, so that the fitting effect with the inner wall of the false cavity can be improved.
Preferably, the first edge is an arc; the second side is a straight line, an arc protruding towards the first side direction or an arc protruding away from the first side direction.
Optionally, the central angle corresponding to the first edge is 90-270 degrees.
Preferably, the central angle corresponding to the first side is 135-225 degrees.
It is further preferred that the central angle corresponding to the first side is 180 degrees.
I.e. the first side may be exactly semicircular, or may be a major or minor arc, but the corresponding central angle should be within a suitable range in view of the overall shape.
The second side may be a straight line and when the first side is a semicircle, the prosthetic device is generally semi-cylindrical.
The second edge may also be slightly curved, and the ridge may be oriented to point or face away from the first edge, in order to accommodate different circumstances.
Preferably, the connection part of the first side and the second side is in arc transition. Can avoid sharp edges and corners and improve safety.
The columnar structure is formed by encircling a first surface where the first edge is located, a second surface where the second edge is located and two end surfaces, and metal wires close to one end surface of the opening of the false cavity are densely woven to block blood flow.
Since one of the primary functions of the prosthetic device is to block blood flow into the prosthetic device, the wires are densely woven, at least adjacent one end face of the prosthetic device opening, to the extent that blood flow is blocked. This allows the remaining portion of the columnar structure to be as compliant as possible, since dense braiding may increase stiffness, losing a portion of compliance.
Preferably, the wires of each face of the columnar structure are densely woven to block blood flow.
In a preferred embodiment, each face of the columnar structure may block blood flow.
Preferably, a filling material for blocking blood flow is provided inside the columnar structure.
The filling material may be selected from water-swellable materials of the prior art, etc., which swell to block blood flow after being placed in the body.
Preferably, a coating film for blocking blood flow is provided inside the columnar structure.
The coating film can be made of the existing materials.
The above dense braiding, filling material and covering film can be combined in various ways to further improve the effect of blocking blood flow.
Preferably, the axial end part of the columnar structure is wrapped with a coating film.
Preferably, the coating film extends from the axial end face of the columnar structure to the periphery of the axial end part; or the coating film only wraps the periphery of the axial end part.
In both schemes, one of the covers is similar to a cap, wrapping the entire tip, and the other is annular, including only the local periphery. The covering film can be a water-absorbing expansion material, and the thickness of the covering film is increased after absorbing water, so that the covering film is compliant to fill the space of the plugging part. Moreover, the mode that the outer layer can be coated can also play a role in preventing permeation.
The metal wire is made of the existing memory metal material, is in a compressed state outside the body, and expands under the action of body temperature after being placed in the body, and is in a columnar shape, so that the description of the related shape of the invention is understood to be the working state of the false cavity plugging device after the expansion in the body under no special statement.
In order to facilitate traction or recovery of the false cavity plugging device, preferably, the metal wire of the braided false cavity plugging device is provided with a plurality of thread ends at the axial end face of the columnar structure, and the thread ends are mutually converged and connected.
As a further preference, the connecting part where the plurality of thread ends converge with each other is provided with a connecting piece matched with the conveying device. Such as hooks, loops, T-heads, etc., to facilitate handling of the towed structure.
The connecting piece can be connected with the mutually converged positions of the plurality of thread ends in a welding or tightening mode and the like.
And the bus of the columnar structure is a straight line or a curve.
Different bus changes can adapt to more demands, and in addition, the stabilizing effect can be improved, and displacement is prevented.
Preferably, the bus bar of the columnar structure is an arc line or a wavy line.
The false cavity plugging device is formed by weaving metal wires, can ensure the compliance of implantation, has a hollow columnar structure on the whole structure, can adapt to the internal shape of a false cavity, and improves the plugging effect.
Drawings
FIG. 1 is a schematic perspective view of a prosthetic device according to the present invention;
FIG. 2 is a schematic view of the end face of the prosthetic device of FIG. 1 with a plurality of thread ends;
FIG. 3 is a schematic cross-sectional view of the angle A-A of FIG. 1;
FIG. 4 is a schematic cross-sectional view of another embodiment of a prosthetic device according to the present invention;
FIG. 5 is a schematic view of a third cross-sectional shape of a prosthetic device of the invention;
FIG. 6 is a schematic view of the prosthetic device of the present invention after placement in a prosthetic cavity;
FIG. 7 is a schematic view showing the state of use of the prosthetic device of the invention;
FIG. 8 is a schematic view of another use state of the prosthetic device of the present invention;
FIG. 9 is a schematic view of a third use state of the prosthetic device of the invention;
FIG. 10 is a schematic view of another columnar structure of a prosthetic device of the invention;
FIG. 11 is a schematic view of a third columnar structure of a prosthetic device according to the present invention;
FIG. 12 is a schematic view of a fourth columnar structure of a prosthetic device according to the present invention;
FIG. 13 is a schematic view of a partial membrane covering of a prosthetic device of the present invention;
FIG. 14 is a schematic view of another partial stent graft of the prosthetic device of the present invention.
Detailed Description
Referring to fig. 1, in the prosthetic cavity plugging device according to the embodiment of the invention, the overall hollow columnar structure 1, the outer wall of the columnar structure 1 may be a grid structure woven by metal wires, and the cross section of the columnar structure 1 is surrounded by a first side 2 with a larger curvature and a second side 3 with a smaller curvature.
Referring to fig. 2, in order to facilitate pulling or recovery of the prosthetic cavity blocking device, the wire of the braided prosthetic cavity blocking device is provided with a plurality of wire ends 4 at the axial end face of the columnar structure 1, and the plurality of wire ends 4 are connected together in a converging manner.
Referring to fig. 3, the first side 2 is an arc, and the central angle corresponding to the first side 2 is 135 degrees, namely a minor arc; the second side 3 is a straight line.
Referring to fig. 4, the first side 2 is a circular arc; the central angle corresponding to the first side 2 is 225 degrees, namely the major arc and the second side 3 is a straight line.
Referring to fig. 5, the first side 2 is an arc, and the central angle corresponding to the first side 2 is 135 degrees, namely a minor arc; the second side 3 is arc-shaped and bulges towards the first side 2. In order to avoid sharp edges, the connection between the first edge 2 and the second edge 3 is a circular arc transition zone 5.
Referring to fig. 6, the blood vessel 6 is divided into a compressed normal channel 8 and a false cavity by the peeling layer 7, the false cavity plugging device 9 of this embodiment is placed in the false cavity, the first edge of the false cavity plugging device 9 is a semicircle, the second edge is a straight line, the whole body is a semicircle column, the whole body can be perfectly attached to the inner wall of the false cavity, the effect of blocking blood flow is improved, in the practical application process, the structural characteristics of the focus part can be combined, and the stability is increased by selecting a columnar structure with proper length and size.
Referring to fig. 7, a false cavity 10 is formed on one side inner wall of the blood vessel 6, a false cavity plugging device 9 can be placed in the false cavity through an opening 11 of the false cavity 10, the false cavity plugging device 9 is formed by braiding memory wires, and the wires on each side of the columnar structure are densely braided to block blood flow. The false cavity plugging device 9 is slightly longer, and a part of the false cavity plugging device is plugged at the opening 11 of the false cavity 10, so that the plugging effect can be further improved.
Referring to fig. 8, unlike fig. 7, the prosthetic device 9 is slightly shorter than the prosthetic device 10 and does not block the opening 11, but may have a better blocking effect. In addition, a water-absorbing expansion material can be arranged in the false cavity plugging device 9, so that the effect is further ensured.
Referring to fig. 9, a prosthetic cavity occlusion device 9, which is different from fig. 8, is introduced through an opening 11 of a prosthetic cavity 10 and is placed above the opening 11.
Referring to fig. 10, the bus bar of the columnar structure 1 of the false cavity plugging device is curved, the middle part of the columnar structure 1 bulges outwards in the figure, and the middle part of the columnar structure 1 is thicker.
Referring to fig. 11, unlike fig. 10, the bus bar is folded inwardly at the middle portion, and the columnar structure 1 is thinner at the middle portion as a whole.
Referring to fig. 12, unlike fig. 10, the bus bar is a wavy line, and the columnar structure 1 has a plurality of expanded diameters and reduced diameters as a whole.
Referring to fig. 13, the end of the columnar structure 1 is provided with a coating 12, only one end is shown in the figure, the other end is the same, and the coating 12 wraps the whole end part.
Referring to fig. 14, unlike fig. 13, the cover film 12 has a ring shape, and only the outer peripheral portion of the tip portion is wrapped.
The false cavity plugging device is formed by weaving metal wires, can ensure the compliance of implantation, has a hollow columnar structure on the whole structure, can adapt to the internal shape of a false cavity, and improves the plugging effect.
Claims (10)
1. A false cavity plugging device for aortic dissection, which is characterized by being a hollow columnar structure as a whole, wherein the outer wall of the columnar structure is formed by a grid woven by metal wires, and the cross section of the columnar structure is formed by a first edge with larger curvature and a second edge with smaller curvature;
The columnar structure is formed by surrounding a first surface where the first edge is located, a second surface where the second edge is located and two end surfaces;
the axial end part of the columnar structure is wrapped with a coating film, the coating film extends from the axial end surface of the columnar structure to the periphery of the axial end part, and the coating film is a water-absorbing expansion material;
and a filling material for blocking blood flow is arranged in the columnar structure, and the filling material is a water-absorbing expansion material.
2. The prosthetic luminal occlusion device for aortic dissection of claim 1 wherein said first edge is a circular arc; the second side is a straight line, an arc protruding towards the first side direction or an arc protruding away from the first side direction.
3. The prosthetic luminal occlusion device of claim 2, wherein the first edge has a corresponding central angle of 90-270 degrees.
4. The prosthetic luminal occlusion device of claim 3, wherein the first edge corresponds to a central angle of 135-225 degrees.
5. The prosthetic luminal occlusion device for aortic dissection of claim 4, wherein the first edge corresponds to a central angle of 180 degrees.
6. The prosthetic luminal occlusion device for aortic dissection of claim 1, wherein the junction of the first and second sides is rounded.
7. The prosthetic luminal occlusion device for aortic dissection of claim 1, wherein each face of the columnar structure is densely braided with wires to block blood flow.
8. The prosthetic luminal occlusion device for aortic dissection of claim 1, wherein the interior of the columnar structure is provided with at least one blood flow blocking coating.
9. The prosthetic luminal occlusion device for aortic dissection of claim 1, wherein the generatrix of the columnar structure is straight or curved.
10. The prosthetic luminal occlusion device for aortic dissection of claim 1, wherein the generatrix of the columnar structure is an arc or wave line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008180.1A CN106539606B (en) | 2017-01-05 | 2017-01-05 | False cavity plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008180.1A CN106539606B (en) | 2017-01-05 | 2017-01-05 | False cavity plugging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106539606A CN106539606A (en) | 2017-03-29 |
| CN106539606B true CN106539606B (en) | 2024-04-30 |
Family
ID=58397826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710008180.1A Active CN106539606B (en) | 2017-01-05 | 2017-01-05 | False cavity plugging device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106539606B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108113785B (en) * | 2017-12-25 | 2020-04-21 | 有研医疗器械（北京）有限公司 | Intravascular false cavity plugging support |
| US20240065822A1 (en) * | 2021-01-13 | 2024-02-29 | Ashish Mitra | Novel device for treatment of aortic dissections |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013005195A1 (en) * | 2011-07-07 | 2013-01-10 | Jayandiran Pillai | Aneurysm occluder |
| CN103260548A (en) * | 2009-12-01 | 2013-08-21 | 阿尔图拉医疗公司 | Modular endograft devices and associated systems and methods |
| CN104173120A (en) * | 2014-09-11 | 2014-12-03 | 山东省立医院 | Postoperation perivalvular leakage plugging device |
| CN104905891A (en) * | 2008-05-15 | 2015-09-16 | 阿尔图拉医疗公司 | Devices and methods for treatment of abdominal aortic aneurysms |
| CN206777373U (en) * | 2017-01-05 | 2017-12-22 | 郭伟 | A kind of false chamber plugging device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068298A1 (en) * | 2010-11-17 | 2012-05-24 | Endologix, Inc. | Devices and methods to treat vascular dissections |
| US20160030155A1 (en) * | 2013-03-14 | 2016-02-04 | Inceptus Medical LLC | Aneurysm Graft With Stabilization |
| US10682436B2 (en) * | 2013-03-15 | 2020-06-16 | Arsenal Medial, Inc. | In-Situ forming foam for the treatment of vascular dissections |
-
2017
- 2017-01-05 CN CN201710008180.1A patent/CN106539606B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905891A (en) * | 2008-05-15 | 2015-09-16 | 阿尔图拉医疗公司 | Devices and methods for treatment of abdominal aortic aneurysms |
| CN103260548A (en) * | 2009-12-01 | 2013-08-21 | 阿尔图拉医疗公司 | Modular endograft devices and associated systems and methods |
| WO2013005195A1 (en) * | 2011-07-07 | 2013-01-10 | Jayandiran Pillai | Aneurysm occluder |
| CN104173120A (en) * | 2014-09-11 | 2014-12-03 | 山东省立医院 | Postoperation perivalvular leakage plugging device |
| CN206777373U (en) * | 2017-01-05 | 2017-12-22 | 郭伟 | A kind of false chamber plugging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106539606A (en) | 2017-03-29 |
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Effective date of registration: 20200918 Address after: 100853 Fuxing Road, Beijing, Haidian District, No. 28 Applicant after: CHINESE PLA GENERAL Hospital Address before: 11 Department of vascular surgery, surgical building, No. 28 Fuxing Road, Beijing, Haidian District, China Applicant before: Guo Wei |
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