CN114668565A - Intracranial support - Google Patents
Intracranial support Download PDFInfo
- Publication number
- CN114668565A CN114668565A CN202210248979.9A CN202210248979A CN114668565A CN 114668565 A CN114668565 A CN 114668565A CN 202210248979 A CN202210248979 A CN 202210248979A CN 114668565 A CN114668565 A CN 114668565A
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- Prior art keywords
- stent
- reinforcing rib
- intracranial
- cylindrical
- mesh tube
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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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- 238000007917 intracranial administration Methods 0.000 title claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 67
- 206010002329 Aneurysm Diseases 0.000 claims abstract description 30
- 210000004204 blood vessel Anatomy 0.000 claims description 12
- 238000012800 visualization Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 16
- 230000017531 blood circulation Effects 0.000 abstract description 7
- 210000003739 neck Anatomy 0.000 description 12
- 206010028980 Neoplasm Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000003073 embolic effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036314 physical performance Effects 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical group Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 201000008450 Intracranial aneurysm Diseases 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 210000001841 basilar artery Anatomy 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003388 posterior cerebral artery Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/848—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents having means for fixation to the vessel wall, e.g. barbs
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/823—Stents, different from stent-grafts, adapted to cover an aneurysm
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (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 relates to the technical field of medical instruments, in particular to an intracranial stent. The intracranial stent comprises a plurality of main supporting curve units which are longitudinally arranged and a connecting rib structure which is connected between two adjacent main supporting curve units, wherein the main supporting curve units are sequentially connected through the connecting rib structure to form a cylindrical network management stent; the connecting rib structure is a reinforced rib grid structure, so that the performance of the stent can be improved, and when the intracranial cylindrical mesh tube stent assists the spring coil to embolize the aneurysm, the reinforced rib grid structure can improve the overall stability of the stent and prevent the stent from shifting under the impact of blood flow due to insufficient radial support; the reinforcing rib grid structure can improve the folding resistance of the stent and improve the adherence of the stent in a tortuous vessel; the reinforcing rib grid structure can improve the local metal coverage rate of the stent and improve the blood flow at the neck of the aneurysm, thereby influencing the treatment of the aneurysm.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an intracranial stent.
Background
Currently, in the prior art, the intravascular stents are mainly represented by Atlas stents of the smith company and Enterprise stents of the qiangsheng company, and almost all the connection modes between the main curves of the intravascular stents are mainly solid point or line connections.
In the prior art, the Atlas stent of the Staeck company is shown in FIG. 6: the stent is provided with an open-loop part 6, although the open-loop part can make the stent easy to bend, the radial supporting force is small, the supporting force on the spring ring 5 is small, and when the blood vessel at the neck of the aneurysm is too tortuous (in the case, the blood vessel is a complex structure blood vessel), the stent is easy to deform, the aperture of the stent is too large, and the spring ring is easy to deviate; the Enterprise scaffold from johnson as shown in fig. 7: although there is no open loop portion, the main curve points are connected, but such stents are poorly compliant and adherent, and are prone to shifting when placed in vessels of widely varying diameters (basilar arteries, posterior cerebral arteries, etc.), in this case vessels of complex structure. Atlas and Enterprise have low overall metal coverage.
Therefore, the inventor provides a novel intracranial stent.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problems that an intracranial stent is provided to solve the problems of small unit radial supporting force, poor adherence, easy displacement and small metal coverage rate of the existing intracranial aneurysm vessel supporting stent under the condition that an aneurysm neck is positioned at a complex structure vessel.
(II) technical scheme
In order to solve the technical problems, the invention provides an intracranial stent which comprises a plurality of main support curve units arranged longitudinally and a connecting rib structure connected between two adjacent main support curve units, wherein the main support curve units are sequentially connected through the connecting rib structure to form a cylindrical net pipe stent to be supported in an intracranial blood vessel with aneurysm, the cylindrical net pipe stent is provided with an open loop part, the connecting rib structure is a reinforcing rib grid structure to improve the performance of the stent, the cylindrical net pipe stent is correspondingly provided with a reinforcing rib grid structure in a radial section at the position with the reinforcing rib grid structure, a plurality of reinforcing rib grid structures are uniformly arranged in the axial direction, and the tracks of the plurality of reinforcing rib grid structures in the axial direction are connected to form a spiral curve.
The reinforcing rib grid structure is triangular, quadrilateral, hexagonal, circular, oval or petal-shaped.
The cylindrical net pipe support is characterized in that more than three reinforcing rib grid structures are correspondingly distributed in a radial section of a position with the reinforcing rib grid structures, and the more than three reinforcing rib grid structures are uniformly distributed in the radial direction.
And the wire diameter of the reinforced rib grid structure is not more than that of the main support curve unit.
The section of the cylindrical mesh tube bracket with the reinforcing rib grid structure is a protruding section, the gradient of the protruding section is 0-90 degrees, and the protruding section corresponds to the neck of the aneurysm.
The metal coverage rate of the middle part of the cylindrical mesh tube bracket is greater than the metal coverage rate of the two end parts of the cylindrical mesh tube bracket.
Wherein, the grids at the two ends of the cylindrical net pipe bracket are closed; one end of the cylindrical net pipe support is in a horn mouth shape.
Developing marks are arranged at two ends of the cylindrical network management bracket, at the beginning of the high metal coverage rate of the cylindrical network management bracket and at the end of the high metal coverage rate of the cylindrical network management bracket.
The main supporting curve of the local section of the cylindrical net pipe support and/or the silk threads of the reinforcing rib grid structure are flat, and the silk threads are turned up to form a shutter structure.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
in the technical scheme of the invention, a plurality of main supporting curve units are sequentially connected through a connecting rib structure to form a cylindrical network management bracket, the main supporting curve units determine the overall performance of the bracket, and the existence of a reinforced rib grid structure can improve the overall performance of the bracket through the physical performance of different grid patterns; the cylindrical net tube support is supported in an intracranial blood vessel with aneurysm, and the connecting rib structure is a reinforcing rib grid structure, so that the performance of the support can be improved; the reinforcing rib grid structure can improve the folding resistance of the stent and improve the adherence of the stent in a tortuous vessel; the reinforcing rib grid structure can improve the local metal coverage rate of the stent and improve the blood flow at the neck of the aneurysm, thereby influencing the treatment of the embolic aneurysm.
Radial supporting force of the support is improved through the arrangement of the reinforcing rib grid structure, and meanwhile, a plurality of reinforcing rib grid structure track connecting lines in the axial direction form a spiral curve, so that flexibility and adherence of the support can be improved.
Drawings
FIG. 1 is a schematic view of the structure of an aneurysm vessel to which an intracranial stent according to the invention is applied;
FIG. 2 is a schematic representation of one configuration of an intracranial stent of the invention in a deployed state;
FIG. 3 is another schematic structural diagram of the intracranial stent of the invention in a deployed state;
fig. 4 is a schematic structural diagram of a reinforcing rib grid structure in the intracranial stent of the invention.
FIG. 5 is a schematic view of a prior art connecting rib in an intracranial stent;
FIG. 6 is a schematic view of a stent positioned in a blood vessel according to the prior art;
FIG. 7 is a schematic view of another stent in a vessel according to the prior art;
FIG. 8 is another structural diagram of a reinforcing rib grid structure in the intracranial stent of the invention.
In the figure: 1. a main support curve unit; 2. reinforcing rib grid structure; 3. linear connecting ribs; 4. an aneurysm; 5. a spring ring; 6. an open loop portion.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4 and 8, an intracranial stent according to an embodiment of the invention includes a plurality of longitudinally arranged main support curve units 1 and a connecting rib structure connected between two adjacent main support curve units, the plurality of main support curve units are sequentially connected through the connecting rib structure to form a cylindrical mesh tube stent to be supported in an intracranial blood vessel with aneurysm, the cylindrical mesh tube stent has an open loop portion 6, and the connecting rib structure is a reinforcing rib grid structure 2 to improve stent performance.
In the above embodiment, the multiple main supporting curve units are sequentially connected through the connecting rib structure to form the cylindrical mesh tube support, the main supporting curve units determine the overall performance of the support, and the existence of the reinforcing rib grid structure can improve the overall performance of the support through the physical performance of different grid patterns; aiming at the condition that the neck of an aneurysm 4 is positioned at a complex structure blood vessel, the cylindrical network management bracket is supported in the intracranial blood vessel, and the connecting rib structure is a reinforcing rib grid structure, so that the performance of the bracket can be improved; the reinforcing rib grid structure can improve the radial supporting force and the folding resistance of the stent and improve the adherence of the stent in a tortuous vessel; the reinforcing rib grid structure can improve the local metal coverage rate of the stent and improve the blood flow at the neck of the aneurysm, thereby influencing the treatment of the embolic aneurysm.
In addition, at the position of aneurysm neck, often need the support to possess bigger metal coverage, strengthen the existence of net, not only can increase the metal coverage of aneurysm neck department, prevent that spring coil 5 from protruding entering the vascular cavity, can also change the direction and the speed that the blood flow invaded in the aneurysm to a certain extent, increase the long-term healing rate of aneurysm.
Preferably, the reinforcing rib grid structure is a quadrangle; the grid structure of the reinforcing ribs is trapezoidal or parallelogram; when the reinforcing rib grid structure is a trapezoidal reinforcing rib, the radial supporting force of the stent can be obviously improved compared with the linear connecting rib 3 (shown in figure 5). When the grid structure of the reinforcing rib is a rhombic structure, the radial supporting force of the bracket can be obviously improved relative to the wire connecting rib; when the grid structure of the reinforcing ribs is reinforcing ribs with a parallelogram structure, the bending resistance of the bracket can be improved relative to the linear connecting ribs, and the metal coverage rate of the bracket can be improved.
Preferably, the grid structure of the reinforcing ribs is triangular, hexagonal, circular, oval or petal-shaped.
In the application, a specific reinforcing rib grid structure is adopted, compared with a traditional one-dimensional line or point, the two-dimensional graph stability is better, and compared with a line and a triangle, the force for radially compressing the triangle is larger than that for compressing the line, and the radial supporting force is better; when the parallelogram is bent in the axial direction, the parallelogram has better flexibility and better adherence due to the unstable structure of the parallelogram, as compared with a line and the parallelogram.
Preferably, the cylindrical net pipe support is provided with a reinforcing rib grid structure correspondingly arranged in a radial section at the position with the reinforcing rib grid structure, a plurality of reinforcing rib grid structures are uniformly arranged in the axial direction, and a plurality of reinforcing rib grid structures in the axial direction are connected by a track to form a spiral curve. Radial holding power through setting up reinforcing bar grid structure promotion support simultaneously, form a helical curve at a plurality of reinforcing bar grid structure orbit connecting lines of axial direction, thereby make the support change the distortion more, can promote the compliance and the adherence of support, be located the condition of complex structure blood vessel department to 4 tumor necks of aneurysm like this, the support can comply with vascular structure better, the adherence is better, the radial holding power of support is also better simultaneously, the problem that can not take place to shift.
For example, a cylindrical mesh tube support without reinforcing mesh is averagely divided into 5 sections in the axial direction, a reinforcing rib mesh structure is placed in each section, if five reinforcing rib mesh structures are positioned on an axial straight line, the mechanical property of the support on the straight line can be changed only, but if five reinforcing rib mesh structures form a spiral curve in the axial direction, the integral performance of the support can be changed uniformly, and because of spiral distribution, the wall adherence of the support is improved while the integral radial supporting force of the support is increased.
Preferably, more than three reinforcing rib grid structures are correspondingly distributed in the radial section of the cylindrical net pipe support at the position with the reinforcing rib grid structures, and the more than three reinforcing rib grid structures are uniformly distributed in the radial direction. More than three reinforcing rib grid structures are selected according to the specific requirements of radial support force, softness and adherence of the support, so that the support performance of the support can be better met.
Similarly, if the grid structure of the reinforcing ribs forms three spiral curves for distribution, the distribution is mainly for the uniformity of the overall mechanical property of the bracket, and the bracket has higher radial supporting force and better bending property; if the grid structure of the reinforcing ribs forms three straight lines, the radial supporting force is stronger.
Preferably, the wire diameter of the reinforcing rib grid structure is not larger than the wire diameter of the main supporting curve unit. The main supporting curve unit ensures the overall performance of the bracket; the wire diameter of the reinforcing rib grid structure is not more than that of the main support curve unit, so that radial support force is guaranteed on one hand, and softness and adherence requirements of the support can be guaranteed on the other hand.
Preferably, one section of the cylindrical mesh tube stent with the reinforcing rib grid structure is a convex section, the slope of the convex section is 0-90 degrees, and the convex section corresponds to the neck of the aneurysm.
In order to increase the holistic adherence of support, this slope setting has been in aneurysm neck department, because there is better radial holding power, can prevent that the spring coil from flattening the support by better fixed action to the spring coil in the tumor sac, has improved the holistic adherence of support.
Generally, the cutting stent is formed by cutting a plate or a tube, the outer surface and the inner surface are a plane, but due to the existence of the slope, the stent can be partially similar to a half-open shutter, the dynamics of blood flow entering into and exiting from the tumor sac is changed, and the aneurysm is better treated.
Preferably, the metal coverage rate of the middle part of the cylindrical mesh tube stent is greater than that of the two end parts of the cylindrical mesh tube stent. The middle part of the cylindrical mesh tube stent is the position for supporting the aneurysm, so that the neck part of the aneurysm has high metal coverage rate through the structural arrangement, the stronger supporting performance of the stent can be ensured, and the middle part of the cylindrical mesh tube stent is suitable for a tortuous blood vessel so as to ensure better support for the position of the aneurysm.
Preferably, the meshes at the two ends of the cylindrical mesh tube support are closed; one end of the cylindrical net pipe support is in a horn mouth shape, so that one end of the support is anchored better, two ends of the support can be anchored more stably, and the stability of the support is guaranteed.
Preferably, the two ends of the cylindrical mesh tube support, the high metal coverage starting position of the cylindrical mesh tube support and the high metal coverage ending position of the cylindrical mesh tube support are provided with developing marks so as to ensure better operation of the support during operation.
Preferably, the main supporting curves of the local sections of the cylindrical mesh tube stent and/or the wires of the reinforcing rib grid structure are flat, and the wires are turned up to form the louver structure. The stent can be partially similar to a half-open shutter, so that the dynamics of blood flow entering and exiting a tumor sac are changed, and the aneurysm is better treated.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. An intracranial stent is characterized by comprising a plurality of main support curve units which are longitudinally arranged and a connecting rib structure connected between two adjacent main support curve units, wherein the main support curve units are sequentially connected through the connecting rib structure to form a cylindrical net pipe stent to be supported in an intracranial blood vessel with aneurysm, the cylindrical net pipe stent is provided with an open loop part, and the connecting rib structure is a reinforcing rib grid structure to improve the performance of the stent; the cylindrical net pipe support is characterized in that a reinforcing rib grid structure is correspondingly arranged in a radial section of the position with the reinforcing rib grid structure, a plurality of reinforcing rib grid structures are uniformly arranged in the axial direction, and a plurality of reinforcing rib grid structure tracks in the axial direction are connected to form a spiral curve.
2. The intracranial stent of claim 1, wherein the reinforcing rib lattice structure is triangular, quadrilateral, hexagonal, circular, elliptical, or petaloid.
3. The intracranial stent as in claim 1, wherein the cylindrical mesh tube stent is correspondingly provided with more than three reinforcing rib mesh structures in a radial section at the position of the reinforcing rib mesh structures, and the more than three reinforcing rib mesh structures are uniformly distributed in the radial direction.
4. The intracranial stent as in claim 1, wherein the wire diameter of the reinforcing rib lattice structure is no greater than the wire diameter of the main support curve elements.
5. The intracranial stent as recited in claim 1, wherein the section of the cylindrical mesh tube stent having the reinforcing rib lattice structure is a convex section, the slope of the convex section is 0-90 °, and the convex section corresponds to the neck of the aneurysm.
6. The intracranial stent as recited in claim 1, wherein the metallic coverage of the middle portion of the cylindrical mesh tube stent is greater than the metallic coverage of the two end portions of the cylindrical mesh tube stent.
7. The intracranial stent as recited in claim 1, wherein the meshes at both ends of the cylindrical mesh tube stent are closed; one end of the cylindrical net pipe bracket is in a horn mouth shape.
8. The intracranial stent as recited in claim 1, wherein the two ends of the cylindrical mesh tube stent, the high-metal-coverage beginning of the cylindrical mesh tube stent, and the high-metal-coverage end of the cylindrical mesh tube stent are provided with visualization markers.
9. The intracranial stent as recited in claim 1, wherein the main support curve of the partial section of the cylindrical mesh tube stent and/or the wires of the reinforcing rib lattice structure are flat, and the wires are turned up to form a louver structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210248979.9A CN114668565A (en) | 2022-03-15 | 2022-03-15 | Intracranial support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210248979.9A CN114668565A (en) | 2022-03-15 | 2022-03-15 | Intracranial support |
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| Publication Number | Publication Date |
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| CN114668565A true CN114668565A (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210248979.9A Pending CN114668565A (en) | 2022-03-15 | 2022-03-15 | Intracranial support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116211562A (en) * | 2023-05-06 | 2023-06-06 | 北京久事神康医疗科技有限公司 | Bump support |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107049420A (en) * | 2017-05-09 | 2017-08-18 | 心凯诺医疗科技(上海)有限公司 | One kind takes bolt support and thrombus withdrawing device |
| CN110269730A (en) * | 2019-07-22 | 2019-09-24 | 珠海通桥医疗科技有限公司 | Intravascular stent |
| CN112535560A (en) * | 2020-11-30 | 2021-03-23 | 中国科学院金属研究所 | Super-soft smooth nickel-titanium alloy intracranial intravascular stent with micro-nano structure |
| CN112998798A (en) * | 2021-02-10 | 2021-06-22 | 心凯诺医疗科技(上海)有限公司 | Novel intracranial stent system |
-
2022
- 2022-03-15 CN CN202210248979.9A patent/CN114668565A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107049420A (en) * | 2017-05-09 | 2017-08-18 | 心凯诺医疗科技(上海)有限公司 | One kind takes bolt support and thrombus withdrawing device |
| CN110269730A (en) * | 2019-07-22 | 2019-09-24 | 珠海通桥医疗科技有限公司 | Intravascular stent |
| CN112535560A (en) * | 2020-11-30 | 2021-03-23 | 中国科学院金属研究所 | Super-soft smooth nickel-titanium alloy intracranial intravascular stent with micro-nano structure |
| CN112998798A (en) * | 2021-02-10 | 2021-06-22 | 心凯诺医疗科技(上海)有限公司 | Novel intracranial stent system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116211562A (en) * | 2023-05-06 | 2023-06-06 | 北京久事神康医疗科技有限公司 | Bump support |
| CN116211562B (en) * | 2023-05-06 | 2023-11-21 | 北京久事神康医疗科技有限公司 | Bump support |
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