CN116077123A - Bracket for treating intracranial bifurcation aneurysm - Google Patents
Bracket for treating intracranial bifurcation aneurysm Download PDFInfo
- Publication number
- CN116077123A CN116077123A CN202211383784.1A CN202211383784A CN116077123A CN 116077123 A CN116077123 A CN 116077123A CN 202211383784 A CN202211383784 A CN 202211383784A CN 116077123 A CN116077123 A CN 116077123A
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- CN
- China
- Prior art keywords
- support
- stent
- aneurysm
- intracranial
- dense net
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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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Classifications
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- 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
- A61B17/12113—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm
- A61B17/12118—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm for positioning in conjunction with a stent
-
- 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
- A61B17/12131—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
- 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
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
Abstract
The invention discloses a bracket for treating intracranial bifurcation aneurysms, which comprises a dense net bracket, a fixed bracket and a developing point, wherein the dense net bracket is arranged outside a neck opening of an aneurysm and is used for plugging the neck opening of the aneurysm, the fixed bracket is fixedly connected with the dense net bracket, extends into a bifurcation vessel and is attached to the inner wall of the bifurcation vessel and is used for keeping the dense net bracket to be plugged stably, and developing points are fixed at two ends of the fixed bracket and are used for displaying the position of the fixed bracket. The device is in a hollow three-dimensional structure by cutting the stent, and even if the device is inserted into a branch vessel, blood in the branch vessel can flow from the penetrating part of the center of the branch vessel, so that the normal flow of the blood is not influenced, and the situation of blocking the side branch vessel due to the high metal coverage rate of the dense-mesh stent is avoided.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a bracket for treating intracranial bifurcation aneurysm.
Background
Intracranial aneurysms are hemangiomatoid processes formed by local vascular abnormalities, and rupture is a major cause of subarachnoid hemorrhage. The intracranial aneurysm rupture bleeding has the characteristics of urgent onset, severe symptoms, high mortality rate and high disability rate. Depending on the site of occurrence of the aneurysm, it is classified into a lateral aneurysm and a bifurcated aneurysm.
Current endovascular interventions for aneurysms are mainly intratumoral embolization and parent artery reconstruction. The intratumoral embolism is characterized in that a stent is used for supporting a tumor-carrying blood vessel, a spring ring or an embolic agent is placed in an aneurysm cavity, so that the blood flow speed in the aneurysm cavity is slowed down or stagnated, and thrombus is gradually formed, thereby blocking the aneurysm cavity. However, the spring coil or the embolic agent is not degradable and can not be absorbed by human body, and has long-term occupying effect, which affects part of physiological functions of patients and reduces life quality of the patients.
The reconstruction of the aneurysm-carrying artery mainly adopts a dense net stent, so that the hemodynamics are changed, blood is prevented from entering a tumor sac, the blood flow speed in the aneurysm is reduced, the stent with high metal coverage rate can play a role of a scaffold, and the reconstruction of the aneurysm-carrying artery is realized after endothelialization of the stent. However, the high metal coverage of dense mesh stents tends to occlude and occlude collateral vessels, so current dense mesh stents are only suitable for lateral aneurysms and are not suitable for bifurcated aneurysms.
For the bifurcated aneurysm, embolism is difficult to complete through single-stent release, a double-stent release technology is generally adopted, two stents are sequentially released, protection is formed at the tumor neck of the bifurcated aneurysm, and auxiliary filling of a spring ring is realized. However, the dual stent implantation technique increases the difficulty of operation, and in the implantation process, the difficulty of operation is high when the second stent passes through the mesh of the first stent, and if the operation is improper, the displacement of the first stent may be caused, so that the risk of vascular embolism is increased.
Thus, there is a clinical need for an instrument for targeted interventional treatment of bifurcated aneurysms.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a bracket for treating intracranial bifurcation aneurysm.
In order to achieve the above purpose, the present invention adopts the following technical scheme: comprising
The dense net support is used for being placed outside the target position and plugging the target position;
the fixed bracket is fixedly connected with the dense net bracket, is used for extending into the bifurcated blood vessel, is attached to the inner wall of the bifurcated blood vessel and is used for keeping the dense net bracket stable in plugging;
developing points are fixed at two ends of the fixing support and used for displaying the positions of the fixing support.
As a further description of the above technical solution: the fixed support is a cutting support, the cutting support is a hollow three-dimensional support with two ends penetrating through, and blood can circulate in the center of the cutting support.
As a further description of the above technical solution: the diameters of the two ends of the cutting stent are larger than the diameter of the middle part of the cutting stent, so that the cutting stent can be fixed in a bifurcated vessel.
As a further description of the above technical solution: the dense net support is fixedly connected with the fixed support through a connecting rod, and the fixed connecting rod is made of any one of nickel-titanium alloy, nickel-titanium-copper alloy, nickel-titanium-iron alloy, nickel-titanium-chromium alloy or gold-chromium alloy.
As a further description of the above technical solution: the area of the dense net support is larger than the size of the tumor neck, and the dense net support is manufactured by weaving developing wires.
As a further description of the above technical solution: an opening is formed in the surface of the fixing support, the dense net support is fixedly connected to the edge of the opening, and an included angle exists between the dense net support and the surface of the fixing support.
As a further description of the above technical solution: the fixing support is bent at the opening, and two ends of the bent fixing support are inserted into the branch blood vessel and are used for being attached to the branch blood vessel.
As a further description of the above technical solution: the dense net support and the fixed support are made of memory alloy materials, and the connection mode of the dense net support and the fixed support comprises any one of laser welding, ultrasonic welding, dispensing or physical ligation.
As a further description of the above technical solution: the dense mesh stent has high metal coverage and low mesh coverage.
As a further description of the above technical solution: two groups of the dense net brackets are arranged in parallel.
The invention has the following beneficial effects:
1. according to the invention, the cutting stent is of a hollow three-dimensional structure, and even if the cutting stent is inserted into a branch blood vessel, blood in the branch blood vessel can flow from the penetrating part of the center of the cutting stent, so that the normal flow of the blood is not influenced, and the condition of blocking the side branch blood vessel due to the high metal coverage rate of the dense-mesh stent is avoided.
2. According to the invention, the sheet-shaped dense net support can seal the neck of the aneurysm without entering the aneurysm sac, so that blood is prevented from entering the aneurysm, the rupture risk of the aneurysm is reduced, other spring rings or embolic agents are not required to be filled, and the occupation effect can be eliminated.
3. When the invention is used, the size and shape of the tumor body are not needed to be considered, and a device with a proper size is only needed to be selected according to the size of the tumor neck, compared with the treatment methods of other products on the market at present, the invention has wider application range.
Drawings
FIG. 1 is a schematic illustration of the present invention deployed into a branch vessel;
FIG. 2 is a schematic view of a release portion of the present invention;
FIG. 3 is a schematic view of a release portion of the present invention;
fig. 4 is a schematic representation of the present invention after complete release in a branch vessel.
Legend description:
1. a dense net support; 2. a fixed bracket; 3. developing points; 4. a connecting rod; 6. an aneurysm; 7. and (5) branching blood vessels.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
A bracket for treating intracranial bifurcation aneurysm 6, which comprises a dense net bracket 1 arranged outside a target position, namely a tumor neck opening of the aneurysm 6 and used for blocking the tumor neck opening;
the fixed support 2 is fixedly connected with the dense net support 1, and the connection mode of the dense net support 1 and the fixed support 2 comprises any one of laser welding, ultrasonic welding, dispensing or physical ligation, and the fixed support extends into a bifurcated blood vessel and is attached to the inner wall of the bifurcated blood vessel, so that the fixed support 2 can be stably placed on the blood vessel together, the sealing stability of the dense net support 1 is maintained, and the situation of displacement does not occur;
developing points 3 are fixed at the two ends of the fixed support 2, the developing points 3 are developing alloy, the positions of the fixed support 2 can be displayed, doctors can observe in real time in the operation process, and follow-up operation is facilitated.
Referring specifically to fig. 1-3, one embodiment provided by the present invention is: in this embodiment, the fixing support 2 is a cutting support, and is a support with a hollow three-dimensional structure with two penetrating ends, the cutting support is formed by carving through laser, the cutting support is in a hollow three-dimensional structure, even if the cutting support is inserted into a branch blood vessel, blood in the branch blood vessel can flow from the penetrating position of the central part of the cutting support, normal flow of the blood is not affected, and the situation that the branch blood vessel is blocked due to high metal coverage rate of the sealing net support 1 is avoided, the diameters of the two ends of the cutting support are larger than the outer edge diameter of the central part of the cutting support, the two ends of the sealing net support are in a horn shape, the two ends of the sealing net support can be better fixed in the branch blood vessel, the stability of the cutting support is kept, the sealing net support 1 connected with the cutting support through the connecting rod 4 is kept, the sealing net support 1 is in a sheet shape, the sealing net support 1 can be better attached to the position of the neck opening of an aneurysm, the flowing direction of the blood is changed, the area of the sealing net support 1 is prevented from entering the aneurysm 6, and the size of the sealing net support 1 is larger than the size of the neck opening of the aneurysm, and the size of the neck opening is not needed, and the size of the aneurysm 6 is considered when the sealing net support 1 is selected.
To specifically illustrate the dense net support 1, the dense net support 1 is sheet-shaped, and is woven by adopting developing wires, preferably, the braided wires of the dense net support 1 at least comprise one developing material, so that the position and opening condition of the dense net support 1 can be judged clinically, other materials of the braided wires comprise memory metals with good biocompatibility, such as platinum iridium alloy, platinum tungsten alloy, cobalt chromium alloy, nickel titanium alloy, stainless steel and the like, and the dense net support 1 can be better compatible with blood vessels, and has high metal coverage rate and low mesh rate, and the low mesh rate is that ppi of the dense net support 1 is higher, so that blood can be effectively prevented from entering an aneurysm 6 through the dense net support 1.
Carry out specific explanation to connecting rod 4, connecting rod 4 connects between close net support 1 and fixed bolster 2 for guarantee the stability of both connections, the hardness of connecting rod 4 is greater than close net support 1 and fixed bolster 2 simultaneously, and through heat treatment, make the certain angle that exists between close net support 1 and the fixed bolster 2, make close net support 1 when pasting at the tumor neck mouth, because the elasticity after the heat treatment of connecting rod 4, laminating at the tumor neck mouth that can be more firm reduces the emergence of aversion condition.
In other embodiments, an opening is formed on the surface of the fixing support 2, the tight mesh support 1 is fixedly connected to the edge of the opening, an included angle exists between the tight mesh support 1 and the surface of the fixing support 2, the fixing support 2 bends at the opening, two ends of the fixing support 2 after bending are inserted into branch blood vessels for the fixing support 2 to be attached to the branch blood vessels, two parallel groups of the tight mesh supports 1 are arranged, the fixing support 2 is applicable to side wall tumor blood vessels in an unbent state, the application range of the device is wider, the two parallel groups of the tight mesh supports 1 are provided, a small gap exists between the two groups of the tight mesh supports 1, but the total area of the two groups of the tight mesh supports 1 is still larger than the size of a tumor neck, and the device can also be used for effectively plugging the tumor neck.
Working principle: this device is at the in-process of actual use, fixed bolster 2 is cut the support and stretches into branch vessel and laminate and fix in branch vessel, and with fixed bolster 2 fixed connection's close net support 1 can paste the position of covering at the tumor neck mouth, and close net support 1's size is greater than the size of tumor neck mouth, make it can block up the tumor neck mouth, avoid blood to enter into in the aneurysm 6, close net support 1 compares in current spring ring or embolic agent simultaneously, avoided the space occupying effect, can not influence patient's physiology.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. A stent for treating an intracranial bifurcation aneurysm, comprising: comprising the following steps:
the dense net support is used for being placed outside the target position and plugging the target position;
the fixed bracket is fixedly connected with the dense net bracket, is used for extending into the bifurcated blood vessel, is attached to the inner wall of the bifurcated blood vessel and is used for keeping the dense net bracket stable in plugging;
developing points are fixed at two ends of the fixing support and used for displaying the positions of the fixing support.
2. A stent for treating an intracranial bifurcated aneurysm as in claim 1, wherein: the fixed support is a cutting support, the cutting support is a hollow three-dimensional support with two ends penetrating through, and blood can circulate in the center of the cutting support.
3. A stent for treating an intracranial bifurcated aneurysm as in claim 1, wherein: the diameters of the two ends of the cutting stent are larger than the diameter of the middle part of the cutting stent, so that the cutting stent can be fixed in a bifurcated vessel.
4. A stent for treating an intracranial bifurcated aneurysm as in claim 1, wherein: the dense net support is fixedly connected with the fixed support through a connecting rod, and the fixed connecting rod is made of any one of nickel-titanium alloy, nickel-titanium-copper alloy, nickel-titanium-iron alloy, nickel-titanium-chromium alloy or gold-chromium alloy.
5. A stent for treating an intracranial bifurcated aneurysm as in claim 1, wherein: the area of the dense net support is larger than the size of the tumor neck, and the dense net support is manufactured by weaving developing wires.
6. A stent for treating an intracranial bifurcated aneurysm as in claim 1, wherein: an opening is formed in the surface of the fixing support, the dense net support is fixedly connected to the edge of the opening, and an included angle exists between the dense net support and the surface of the fixing support.
7. A stent for treating an intracranial bifurcated aneurysm as in claim 1, wherein: the fixing support is bent at the opening, and two ends of the bent fixing support are inserted into the branch blood vessel and are used for being attached to the branch blood vessel.
8. A stent for treating an intracranial bifurcated aneurysm as in claim 1, wherein: the dense net support and the fixed support are made of memory alloy materials, and the connection mode of the dense net support and the fixed support comprises any one of laser welding, ultrasonic welding, dispensing or physical ligation.
9. A stent for treating an intracranial bifurcated aneurysm as in claim 1, wherein: the dense mesh stent has high metal coverage and low mesh coverage.
10. A stent for treating an intracranial bifurcated aneurysm as in claim 1, wherein: two groups of the dense net brackets are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211383784.1A CN116077123A (en) | 2022-11-07 | 2022-11-07 | Bracket for treating intracranial bifurcation aneurysm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211383784.1A CN116077123A (en) | 2022-11-07 | 2022-11-07 | Bracket for treating intracranial bifurcation aneurysm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116077123A true CN116077123A (en) | 2023-05-09 |
Family
ID=86208995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211383784.1A Pending CN116077123A (en) | 2022-11-07 | 2022-11-07 | Bracket for treating intracranial bifurcation aneurysm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116077123A (en) |
-
2022
- 2022-11-07 CN CN202211383784.1A patent/CN116077123A/en active Pending
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