CN117860332A - Aortic dissection progress blocking device - Google Patents
Aortic dissection progress blocking device Download PDFInfo
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- CN117860332A CN117860332A CN202410229202.7A CN202410229202A CN117860332A CN 117860332 A CN117860332 A CN 117860332A CN 202410229202 A CN202410229202 A CN 202410229202A CN 117860332 A CN117860332 A CN 117860332A
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- Prior art keywords
- aorta
- catheters
- guide
- aortic dissection
- blocking device
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- 208000002251 Dissecting Aneurysm Diseases 0.000 title claims abstract description 29
- 206010002895 aortic dissection Diseases 0.000 title claims abstract description 29
- 230000000903 blocking effect Effects 0.000 title claims abstract description 20
- 210000000709 aorta Anatomy 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims description 5
- 238000009954 braiding Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 description 9
- 238000002224 dissection Methods 0.000 description 7
- 239000012528 membrane Substances 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 208000034693 Laceration Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 208000028831 congenital heart disease Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 230000002526 effect on cardiovascular system Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013152 interventional procedure Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 206010060874 Aortic rupture Diseases 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000002583 angiography Methods 0.000 description 1
- 210000000702 aorta abdominal Anatomy 0.000 description 1
- 210000002376 aorta thoracic Anatomy 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002297 emergency surgery Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003394 haemopoietic effect Effects 0.000 description 1
- 208000025339 heart septal defect Diseases 0.000 description 1
- 230000000004 hemodynamic effect Effects 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000008506 pathogenesis Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000004231 tunica media Anatomy 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 208000019553 vascular disease Diseases 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
Abstract
The invention relates to the field of medical equipment, and particularly discloses an aortic dissection progress blocking device, which comprises the following components: an interventional catheter for accessing the aorta in an interventional manner; the guiding catheters enter the aorta along the inner cavity of the interventional catheter, the tube heads of the guiding catheters are distributed along the circumferential direction and are sequentially connected through elastic connecting pieces, and the elastic connecting pieces enable the tube heads of the guiding catheters to be unfolded along the radial direction until being contacted with the inner wall of the aorta after extending out of the port of the interventional catheter; the puncture guide wires travel along the corresponding inner cavities of the guide catheters and extend out of the tube heads of the guide catheters to puncture the aorta to form a hole; and a plurality of occluders which run along the corresponding puncture guide wires and occlude the holes on the inner side and the outer side of the aorta and clamp the aorta at the same time. The invention can block the progress of aortic dissection in an interventional way, thereby stabilizing the condition and competing for time for surgical treatment.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an aortic dissection progress blocking device.
Background
Aortic dissection (Aortic Dissection, AD) refers to a condition in which under the influence of various factors, the aortic intima breaks to form a laceration, blood in a blood vessel enters the middle layer of the weak aortic wall through the aortic intima laceration, with or without the middle layer being torn along the longitudinal line, normal arterial wall separation, finally a false cavity is formed in the arterial wall, and thus, hemodynamic obstruction is caused, and life-threatening diseases are caused. Aortic dissection is a fatal acute critical condition that causes a sudden onset of disease, which can lead to shock and rapid death in a short period of time due to aortic rupture, or serious complications due to ischemia of the distal vital organs. Therefore, the pathogenesis of AD and therapeutic research have been hot spots in the field of vascular disease research.
In clinical practice, the aortic dissection can be classified into type A and type B according to the position of aortic dissection of patients; type a dissection involves the heart-connected aorta, which has the highest blood pressure and is most prone to rupture; the only treatment for the A-type interlayer is emergency chest surgery, and the human hematopoietic tube replaces the aorta connected with the heart; type B dissection, aortic dissection limited to the thoracic and abdominal aorta, may be used with interventional stents or drug-conservative treatments.
Aortic dissection diseases are dangerous and rapid in progress, and part of patients die before reaching a hospital; when aortic dissection progresses, blood enters the false cavity through the rupture, and as the pressure increases, the false cavity continuously progresses along the blood vessel, and the larger the false cavity progresses, the larger the rupture risk and the viscera influence are. Because the interlayer is in progress at all times, the clinical patients with the type A interlayer often cannot perform emergency surgery or have long waiting period of surgery, or the type B interlayer is reversely torn into the type A interlayer after the progress, the inventor of the invention realizes that the prior art at home and abroad is not provided with a device capable of blocking the progress of the interlayer, and the progress is always only at discretion, which is extremely dangerous for the patients.
Therefore, to solve the above-mentioned problems, an aortic dissection progression blocking device is needed.
Disclosure of Invention
Accordingly, it is an object of the present invention to provide an aortic dissection progression blocking device capable of blocking progression of aortic dissection in an interventional manner, thereby stabilizing the condition, and struggling for time for surgical treatment.
In order to achieve the above object, the present invention provides an aortic dissection progression blocking device comprising:
an interventional catheter for accessing the aorta in an interventional manner;
the guiding catheters enter the aorta along the inner cavity of the interventional catheter, the tube heads of the guiding catheters are distributed along the circumferential direction and are sequentially connected through elastic connecting pieces, and the elastic connecting pieces enable the tube heads of the guiding catheters to be unfolded along the radial direction until being contacted with the inner wall of the aorta after extending out of the port of the interventional catheter;
the puncture guide wires travel along the corresponding inner cavities of the guide catheters and extend out of the tube heads of the guide catheters to puncture the aorta to form a hole; and
and the plugging devices travel along the corresponding puncture guide wires, plug the holes on the inner side and the outer side of the aorta and clamp the aorta at the same time.
As a further improvement on the technical scheme, the number of the guide catheters is 3-8, and the number of the puncture guide wires and the plugging devices is the same as that of the guide catheters.
As a further improvement to the technical scheme, the elastic connecting piece is an arc-shaped elastic piece or a compression spring.
As a further improvement to the technical scheme, the elastic connecting piece is in a compressed state when the tube head of the guide catheter is placed in the inner cavity of the interventional catheter.
As a further improvement of the technical scheme, the tube heads of the guide catheters are uniformly distributed along the circumferential direction.
As a further improvement of the technical scheme, the head end of the guiding catheter is of a tip structure.
As a further improvement to the technical scheme, the plugging device comprises an elastic net support and a sealing film, wherein the elastic net support comprises a left disc, a waist and a right disc which are integrally formed by braiding nickel-titanium alloy wires, and the sealing film is arranged inside the left disc and the right disc.
Compared with the prior art, the invention has the following beneficial technical effects:
when the aortic dissection progress blocking device is used, an interventional catheter enters an aorta in an interventional mode and reaches a far-end normal vascular position in the dissection false cavity progress direction, then the tube heads of the guide catheters extend out of the ports of the interventional catheters and extend towards the inner wall of the aorta, after the guide catheters are unfolded, puncture guide wires extend out, the tube walls are punctured to form holes, the plugging devices are plugged and simultaneously clamp the aorta, so that a circle of annular belts formed by a plurality of plugging devices are formed, and the annular belts compress the tunica media intima in the adventitia of the normal aortic wall, so that the false cavity can not continue to progress when the dissection progresses;
therefore, the aortic dissection progress blocking device provided by the invention can block the progress of aortic dissection in an interventional way, so that the condition is stabilized, and time is striven for surgical treatment; the invention meets the social requirement, has strong practicability and is beneficial to promoting the further development of cardiovascular medical technology.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a state diagram of the present invention;
fig. 3 is a graph of aortic effect after occlusion using the present invention.
Detailed Description
For a better understanding of the technical solution of the present invention, a further detailed description of the present invention will be provided below with reference to the drawings and to the specific examples; of course, the drawings are simplified schematic representations whose scale is not limiting on the patented products.
Examples
As shown in fig. 1 to 3: the embodiment provides an aortic dissection progress blocking device which comprises an interventional catheter 1, a plurality of guide catheters 2, a plurality of puncture guide wires 3 and a plurality of occluders 4.
Wherein the interventional catheter 1 is used for interventional access into the aorta 9; the manner of interventional therapy is well known to practitioners in the cardiovascular medical arts and will not be described in detail herein.
The guiding catheters 2 enter the aorta 9 along the inner cavity of the interventional catheter 1, the tube heads of the guiding catheters 2 are distributed along the circumferential direction and are sequentially connected by elastic connecting pieces 5, and the elastic connecting pieces 5 enable the tube heads of the guiding catheters 2 to extend out of the port of the interventional catheter 1 and then spread out along the radial direction until contacting with the inner wall of the aorta 9; the tube head of the guiding catheter 2 is one end which goes deep into the aorta 9 (far from the external operation end); the number of guide catheters 2 may be varied according to the need, for example, the number of guide catheters 2 may be 3 to 8, and the number of puncture guide wires 3 and occluders 4 may be the same as the number of guide catheters 2.
Preferably, the tube heads of each guide catheter 2 are uniformly distributed along the circumferential direction, and at this time, the head ends of each guide catheter 2 are positioned on the same plane, and the adjacent tube heads have the same included angle; the diameter of the circumference of the tube head of the guide catheter 2 after being unfolded is larger than that of the interventional catheter 1; when the tube head of the guiding catheter 2 is placed in the inner cavity of the interventional catheter 1, the elastic connecting piece 5 is in a compressed state (partially compressed or fully compressed), and certain relative pressure exists between the guiding catheter 2 and the inner wall of the interventional catheter 1 at the moment, so that the guiding catheter 2 can move along with the interventional catheter 1; the elastic connecting piece 5 can be an arc-shaped elastic piece or a compression spring; furthermore, the head end of the guide catheter 2 may be a pointed structure to facilitate its positioning on the inner wall of the aorta 9.
A plurality of puncture guide wires 3 run along the corresponding inner cavity of the guide catheter 2 and extend out of the tube head of the guide catheter 2 to puncture the aorta 9 to form a hole 8; the piercing guide wire 3 may be a wire with elasticity, which is able to pierce the wall of the aorta 9 and to perform a guiding function during an interventional procedure.
A plurality of occluders 4 run along the corresponding puncture guide wires 3 and occlude the hole 8 at the inner side and the outer side of the aorta 9 and simultaneously clamp the aorta 9; the occluder 4 is identical in construction and principle to the existing heart defect occluder 4, but is smaller in size to accommodate the placement requirements of the aorta 9; for example, the occluding device 4 may include an elastic mesh support including a left disc 41, a waist 42 and a right disc 43 integrally formed by braiding nickel-titanium alloy wires, and a sealing membrane (not shown) provided inside the left disc 41 and the right disc 43.
The existing heart defect occluder 4 is used for treating congenital heart septal defect, and the septal wall of the defect is clamped by the left and right net racks of the occluder 4 to close the defect, so as to achieve the aim of clinical cure, for example, see patent CN205903284U, CN219763408U and the like; the present embodiment makes use of the perforation and clamping properties of the occluder 4 to manually perforate the wall of the aorta 9 in combination with a plurality of occluders 4, thereby blocking the progression of aortic dissection. The interventional procedure of the occluding device 4 is well known to those skilled in the art, and a delivery sheath 5 may be generally used and will not be described in detail herein.
Specifically, in use, the interventional catheter 1 enters the aorta 9 through an interventional manner, the position of the distal normal aorta 9 reaching the vicinity of the progression of the dissection by DSA (digital subtraction angiography) is determined, the distal normal aorta 9 position in the progression direction of the dissection prosthetic cavity is found, a plurality of guide catheters 2 extend out of the interventional catheter 1, an umbrella-like structure is formed under the condition that the elastic connecting piece 5 is loosened, the tip of each guide catheter 2 can be tightly abutted against the inner wall of the aorta 9, a puncture guide wire 3 extends out of the guide catheters 2, the puncture guide wire 3 punctures the wall of the aorta 9, each puncture guide wire 3 can extend into one small-sized occluder 4 along with the puncture guide wire 3 (the multiple occluders 4 simultaneously can reduce bleeding, each occluder 4 can adjust the mutual position one by one, so that the occlusion is more accurate, the specific operation is based on objective conditions), finally, a ring-shaped belt formed by the multiple occluders 4 forms a circle of the normal aorta 9 wall, and the ring-shaped belt compresses the outer membrane, the middle membrane and the inner membrane simultaneously, so that the prosthetic cavity 7 can not continue to the progression to the position when the dissection progresses; the device of the embodiment pair is particularly suitable for preventing the B-type interlayer from being reversely torn into the A-type interlayer, and can also provide rivet points for the placement of the B-type interlayer bracket.
Finally, it is pointed out that the principles and embodiments of the invention have been described herein with reference to specific examples, which are intended to be merely illustrative of the core idea of the invention, and that several improvements and modifications can be made to the invention without departing from the principles of the invention, which also fall within the scope of protection of the invention.
Claims (7)
1. An aortic dissection progression blocking device, comprising:
an interventional catheter for accessing the aorta in an interventional manner;
the guiding catheters enter the aorta along the inner cavity of the interventional catheter, the tube heads of the guiding catheters are distributed along the circumferential direction and are sequentially connected through elastic connecting pieces, and the elastic connecting pieces enable the tube heads of the guiding catheters to be unfolded along the radial direction until being contacted with the inner wall of the aorta after extending out of the port of the interventional catheter;
the puncture guide wires travel along the corresponding inner cavities of the guide catheters and extend out of the tube heads of the guide catheters to puncture the aorta to form a hole; and
and the plugging devices travel along the corresponding puncture guide wires, plug the holes on the inner side and the outer side of the aorta and clamp the aorta at the same time.
2. An aortic dissection progression blocking device according to claim 1, wherein:
the number of the guide catheters is 3-8, and the number of the puncture guide wires and the plugging devices is the same as that of the guide catheters.
3. An aortic dissection progression blocking device according to claim 1, wherein:
the elastic connecting piece is an arc-shaped elastic piece or a compression spring.
4. An aortic dissection progression blocking device according to claim 1, wherein:
the elastic connecting piece is in a compressed state when the tube head of the guide catheter is placed in the inner cavity of the interventional catheter.
5. An aortic dissection progression blocking device according to claim 1, wherein:
the tube heads of the guide catheters are uniformly distributed along the circumferential direction.
6. An aortic dissection progression blocking device according to claim 1, wherein:
the head end of the guide catheter is of a tip structure.
7. An aortic dissection progression blocking device according to any one of claims 1 to 6, wherein:
the plugging device comprises an elastic net support and a sealing film, wherein the elastic net support comprises a left disc, a waist and a right disc which are integrally formed by braiding nickel-titanium alloy wires, and the sealing film is arranged inside the left disc and the right disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410229202.7A CN117860332A (en) | 2024-02-29 | 2024-02-29 | Aortic dissection progress blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410229202.7A CN117860332A (en) | 2024-02-29 | 2024-02-29 | Aortic dissection progress blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117860332A true CN117860332A (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410229202.7A Pending CN117860332A (en) | 2024-02-29 | 2024-02-29 | Aortic dissection progress blocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117860332A (en) |
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- 2024-02-29 CN CN202410229202.7A patent/CN117860332A/en active Pending
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