CN116849749B - Aneurysm vortex device with retractable vortex net - Google Patents
Aneurysm vortex device with retractable vortex net Download PDFInfo
- Publication number
- CN116849749B CN116849749B CN202311124880.9A CN202311124880A CN116849749B CN 116849749 B CN116849749 B CN 116849749B CN 202311124880 A CN202311124880 A CN 202311124880A CN 116849749 B CN116849749 B CN 116849749B
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- Prior art keywords
- net
- turbulence
- conveying pipe
- aneurysm
- pushing rod
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- 206010002329 Aneurysm Diseases 0.000 title claims abstract description 40
- 208000007536 Thrombosis Diseases 0.000 claims abstract description 4
- 239000008280 blood Substances 0.000 claims abstract description 4
- 210000004369 blood Anatomy 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 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
- A61B17/12099—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
-
- 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
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
- A61B17/12172—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure 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
- A61B2017/1205—Introduction devices
- A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
Abstract
The invention discloses an aneurysm turbulence device with a retractable turbulence net, which comprises a conveying pipe, a pushing rod and the turbulence net, wherein the pushing rod and the turbulence net are positioned in the conveying pipe, the turbulence net is provided with a plurality of meshes, the meshes allow blood to flow into the aneurysm at a speed lower than that of thrombus formation, the pushing rod is provided with a retraction structure, in an initial state, the retraction structure is positioned in the conveying pipe and stretches into the meshes of the turbulence net to be attached to the inner wall of the conveying pipe, the conveying pipe is configured to be exposed to the conveying pipe when moving towards the proximal direction relative to the pushing rod, the turbulence net is unfolded when the turbulence net is exposed to the conveying pipe, the retraction structure is not exposed to the conveying pipe, and the pushing rod is configured to drive the turbulence net to retract into the conveying pipe when moving towards the proximal direction relative to the conveying pipe, so that the retraction of the turbulence net can be realized, and no additional structure is required to be added on the turbulence net.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an aneurysm turbulence device with a retractable turbulence net.
Background
Patent CN114948361a filed earlier by the applicant discloses a safe in-tumor turbulence device, which pulls a release wire handle to drive a release wire to pull and separate a release head after a turbulence net is conveyed into an aneurysm, and then releases the release head to release the turbulence net, wherein the released turbulence net is attached to the inner wall of the aneurysm and is formed into a cone shape to seal the aneurysm opening. Since the CN114948361a is not provided with a retracting structure for retracting the turbulent flow net, when the turbulent flow net is not released but the release position of the turbulent flow net is found to be wrong, the CN114948361a cannot retract the turbulent flow net, which presents a challenge to the operation experience of the doctor, and in order to cope with the challenge, the applicant further provides an aneurysm turbulent flow device with retractable turbulent flow net.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides an aneurysm turbulence device with a retractable turbulence net, which overcomes the technical defects pointed out in the background art.
According to the invention, an aneurysm turbulence device with a retractable turbulence net is provided, comprising a conveying pipe, a pushing rod and a turbulence net, wherein the pushing rod and the turbulence net are arranged in the conveying pipe, the turbulence net is provided with a plurality of meshes, the meshes allow blood to flow into the aneurysm at a speed lower than that of thrombus formation, the pushing rod is provided with a retraction structure, in an initial state, the retraction structure is arranged in the conveying pipe and is attached to the inner wall of the conveying pipe after extending into the meshes of the turbulence net, the conveying pipe is configured to be exposed to the conveying pipe when moving towards the proximal direction along the distal end relative to the pushing rod, the turbulence net is unfolded when the retraction structure is not exposed to the conveying pipe, and the pushing rod is configured to drive the turbulence net to retract into the conveying pipe when moving towards the proximal direction along the distal end relative to the conveying pipe.
Further, the turbulent flow net is provided with a first opening which is automatically and radially contracted and a second opening which is automatically and radially expanded, the withdrawing structure is arranged close to the first opening of the turbulent flow net, and after the withdrawing structure is exposed out of the conveying pipe, the turbulent flow net corresponding to the withdrawing structure is automatically and radially expanded so that the withdrawing structure is separated from meshes of the turbulent flow net.
Further, when the turbulent flow net is completely exposed out of the conveying pipe, the second opening of the turbulent flow net radially expands to be attached to the inner wall of the aneurysm, and the first opening of the turbulent flow net radially contracts to be attached to the outer wall of the pushing rod and is automatically closed after the pushing rod is retracted.
Further, the withdrawing structure is a convex column, and the convex column is attached to the inner wall of the conveying pipe after extending into the corresponding mesh of the disturbance flow net.
Further, the convex columns are arranged in a plurality, and the convex columns are uniformly arranged along the circumferential direction of the pushing rod.
Further, one end of the convex column, which is attached to the conveying pipe, is formed into an arc surface.
Further, a first limiting block and a second limiting block are fixed on the pushing rod, the conveying pipe is movably sleeved on the pushing rod and limits the turbulent flow net between the first limiting block and the second limiting block to be in a compressed state, and the retracting structure is located between the first limiting block and the second limiting block and is close to the first limiting block.
Further, a fixed ring is fixed on the pushing rod, the proximal end of the fixed ring is fixedly connected with the distal end of the first limiting block, and the retracting structure is arranged on the outer surface of the fixed ring.
Further, when the withdrawing structure and the turbulent flow net are completely exposed out of the conveying pipe, the turbulent flow net is released and is converted from a compressed state to an expanded state.
Further, the sum of the outer diameter of the second limiting block and the wall thickness of the disturbance flow net is larger than the inner diameter of the conveying pipe, and when the withdrawing structure is exposed to the conveying pipe but the disturbance flow net is not completely exposed to the conveying pipe, the pushing rod is configured to withdraw the disturbance flow net into the conveying pipe through the second limiting block in the process of moving along the far end to the near end direction relative to the conveying pipe.
Compared with the prior art, the invention has the advantages that the withdrawing structure is added on the pushing rod, and the withdrawing structure can be attached to the inner wall of the conveying pipe after extending into the mesh holes of the disturbance flow net, so that when the withdrawing structure is not exposed in the conveying pipe, the disturbance flow net can be driven to withdraw into the conveying pipe by the withdrawing structure, and when the withdrawing structure is exposed in the conveying pipe, the disturbance flow net is automatically separated from the withdrawing structure, thereby realizing the withdrawing of the disturbance flow net without adding an additional structure on the disturbance flow net.
Drawings
The invention will be more fully understood and its attendant advantages and features will be more readily understood by reference to the following detailed description, taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention.
Fig. 2 is a partial schematic structure of fig. 1.
Fig. 3 is a schematic structural view of a pushing rod in an embodiment of the present invention.
Fig. 4 is a schematic view of a partial structure of a push rod and a turbulence net in an embodiment of the present invention.
FIG. 5 is a schematic view showing the overall structure of the spoiler mesh portion exposed under the conveying pipe according to the embodiment of the present invention.
FIG. 6 is a schematic diagram of the overall structure of the spoiler net according to the embodiment of the present invention fully exposed under the conveying pipe.
Fig. 7 is a schematic view of a structure of a spoiler mesh under the spoiler mesh retracted from the push rod in fig. 6.
In the accompanying drawings: 1 is a conveying pipe, 2 is a push rod, 3 is a disturbance flow net, 4 is a withdrawing structure, 5 is a first opening, 6 is a second opening, 7 is a first limiting block, 8 is a second limiting block, and 9 is a fixed ring.
It should be noted that the drawings are for illustrating the invention and are not to be construed as limiting the invention. Note that the drawings representing structures may not be drawn to scale. Also, in the drawings, the same or similar elements are denoted by the same or similar reference numerals.
Detailed Description
In order that the invention may be more readily understood, a detailed description of the invention is provided below along with specific embodiments and accompanying figures.
The terms "proximal" and "distal" in the sense of the present invention should be understood as meaning, viewed from the direction of the attending physician, the term "proximal" referring to the end proximal to the attending physician, i.e. corresponding to the "left end" referred to with reference to the accompanying drawings, and the term "distal" referring to the end distal to the attending physician, i.e. corresponding to the "right end" referred to with reference to the accompanying drawings.
As shown in fig. 1 to 4, the aneurysm turbulence device of the present embodiment includes a delivery tube 1, a push rod 2 and a turbulence net 3 inside the delivery tube 1, wherein the turbulence net 3 has a plurality of meshes, and after the turbulence net 3 seals the aneurysm orifice of the aneurysm, the plurality of meshes on the turbulence net 3 allow blood to flow into the aneurysm at a speed lower than the thrombosis speed, so that the turbulence net 3 can block the blood flow and gradually shrink the aneurysm.
The conveying pipe 1 is used for conveying the pushing rod 2 and the turbulent flow net 3 into the aneurysm, a withdrawing structure 4 is arranged on the pushing rod 2, in an initial state, the withdrawing structure 4 is positioned in the conveying pipe 1 and is attached to the inner wall of the conveying pipe 1 after extending into meshes of the turbulent flow net 3, when the conveying pipe 1 is configured to move along the far end to the near end direction relative to the pushing rod 2, the turbulent flow net 3 is exposed to the conveying pipe and is unfolded, when the withdrawing structure 4 is not exposed to the conveying pipe 1, and when the pushing rod 2 is configured to move along the far end to the near end direction relative to the conveying pipe 1, the withdrawing structure 4 drives the turbulent flow net 3 to withdraw into the conveying pipe 1. Therefore, when the withdrawing structure 4 is not exposed out of the conveying pipe 1, the withdrawing structure 4 can drive the disturbance net 3 to withdraw into the conveying pipe, and when the withdrawing structure 4 is exposed out of the conveying pipe 1, the disturbance net 3 is automatically separated from the withdrawing structure 4, so that the withdrawing of the disturbance net 3 can be realized, and an additional structure is not required to be added on the disturbance net 3.
The turbulence net 3 is made of self-expanding materials, such as nickel titanium, and is provided with a first opening 5 and a second opening 6, the first opening 5 and the second opening 6 are oppositely arranged and are subjected to heat treatment shaping, so that after the turbulence net 3 is released, the first opening 5 automatically radially contracts and can be automatically closed, the second opening 6 automatically radially expands, after the turbulence net 3 blocks an aneurysm in place, the second opening 6 of the turbulence net 3 radially expands to be attached to the inner wall of the aneurysm, the first opening 5 of the turbulence net 3 radially contracts and is automatically closed, and further the function of blocking the aneurysm opening of the turbulence net cannot be affected. The push rod 2 is a solid rod, a first limiting block 7 and a second limiting block 8 are fixed on the push rod 2, the first limiting block 7 and the second limiting block 8 are protruded out of the push rod 2 and are sequentially arranged from the near end to the far end, so that a limiting step for limiting the first opening 5 of the disturbance flow net 3 is formed between the far end of the first limiting block 7 and the push rod 2, and a limiting step for limiting the second opening 6 of the disturbance flow net 3 is also formed between the near end of the second limiting block 8 and the push rod 2. The conveying pipe 1 is movably sleeved on the push rod 2 and can limit the turbulent flow net 3 between the first limiting block 7 and the second limiting block 8 to be in a compressed state, specifically, the first limiting block 7 and the second limiting block 8 can be attached to the inner wall of the conveying pipe 1, and a limiting space is formed by meeting and enclosing the first limiting block 7, the second limiting block 8, the push rod 2 and the conveying pipe 1, so that the turbulent flow net 3 is compressed in the limiting space. The second limiting block 8 is located at the distal end of the pushing rod 2, that is, the second limiting block 8 plays a role in guiding pushing of the pushing rod 2, so that the distal end of the second limiting block 8 is formed into an arc surface to reduce damage to blood vessels, and meanwhile, the proximal end of the second limiting block 8 is also formed into an arc surface to facilitate the smooth withdrawal of the pushing rod 2 from the first opening 5 of the interference flow net 3 with the second limiting block 8 in the withdrawal process. The sum of the outer diameter of the second limiting block 8 and the wall thickness of the spoiler mesh 3 is slightly larger than the inner diameter of the conveying pipe 1, for example, the sum of the outer diameter of the spoiler mesh 8 and the wall thickness of the spoiler mesh 3 can be slightly larger than the inner diameter of the conveying pipe 1 to prevent the conveying pipe 1 from excessively deforming, so that when the spoiler mesh 3 is not completely exposed to the conveying pipe 1, the push rod 2 is configured to be in a state of abutting the spoiler mesh 3 with the conveying pipe 1 when the push rod 2 moves in a distal direction relative to the conveying pipe 1 in the retracting process of the spoiler mesh 1, at least the second limiting block 8 is in a state of abutting the spoiler mesh 3 with the conveying pipe 1, and thereafter the push rod 2 can pull the spoiler mesh 3 into the conveying pipe 1 through the effect of the second limiting block 8, so that the withdrawal of the spoiler mesh 3 is realized.
The retraction structure 4 is located between the first and second limiting blocks 7, 8 and is arranged close to the first limiting block 7. In the initial state, the withdrawing structure 4 is positioned in the conveying pipe 1 and is attached to the inner wall of the conveying pipe 1 after extending into the mesh opening of the disturbance flow net 3, at this time, the withdrawing structure 4 is arranged near the first opening 5 of the disturbance flow net 3, after the conveying pipe 1 conveys the push rod 2 and the disturbance flow net 3 into the aneurysm, when the conveying pipe 1, namely, the conveying pipe 1, moves relative to the push rod 2 in the far end and proximal direction, the disturbance flow net 3 is unfolded while being exposed out of the conveying pipe 1, if the withdrawing structure 4 is not exposed out of the conveying pipe 1, the withdrawing structure 4 still keeps the state of extending into the mesh opening of the disturbance flow net 3, at this time, the push rod 2 is configured to drive the disturbance flow net 3 to withdraw into the conveying pipe 1 through the withdrawing structure 4 when the push rod 2 moves relative to the conveying pipe 1 in the far end and proximal direction, if the withdrawing structure 4 is exposed out of the conveying pipe 1, the turbulent flow net 3 corresponding to the withdrawing structure 4 is automatically and radially expanded, so that the withdrawing structure 4 is separated from the mesh of the turbulent flow net 3, the first opening 5 of the turbulent flow net 3 is still positioned in the conveying pipe 1, namely, the turbulent flow net 3 is not completely exposed out of the conveying pipe 1, at the moment, when the pushing rod 2 is configured to move towards the proximal direction along the distal end relative to the conveying pipe 1, the pushing rod 2 drives the turbulent flow net 3 to withdraw into the conveying pipe 1 through the second limiting block 8, when the turbulent flow net 3 is completely exposed out of the conveying pipe 1, namely, the withdrawing structure 4 and the turbulent flow net 3 are completely exposed out of the conveying pipe 1, the turbulent flow net 3 is released and converted from the compressed state to the expanded state to be attached to the inner wall of an aneurysm, at the moment, when the pushing rod 2 is configured to move towards the proximal direction along the distal end relative to the conveying pipe 1, the pushing rod 2 drives the second limiting block 8 to withdraw the turbulent flow net 3, so that the first opening 5 of the turbulent flow net 3 is automatically contracted and automatically closed, the second opening 6 of the flow disturbing net 3 is self-radially expanded and is attached to the inner wall of the aneurysm to seal the aneurysm opening. Although the withdrawing structure 4 is added in this embodiment, there is no need to add an additional structure on the spoiler mesh 3 for connection with the withdrawing structure 4, but the mesh of the spoiler mesh 3 is skillfully used as a connection structure, so that on one hand, the structure of the whole device is simplified, and on the other hand, the firmness of the spoiler mesh 3 in the withdrawing process is also improved.
The withdrawing structure 4 of this embodiment is a plurality of protruding columns, and protruding columns stretch into the inner wall laminating of the corresponding mesh of disturbing the flow net 3 with conveyer pipe 1 after, and protruding columns set up a plurality of, certainly also can be single, and a plurality of protruding columns of this embodiment evenly set up along the circumferencial direction of push rod 2, and protruding columns form the arc face with the one end that conveyer pipe 1 laminated to reduce the frictional force that forms between withdrawing in-process conveyer pipe 1 and the protruding columns. In order to facilitate the shaping of the push rod 2, in this embodiment, a fixed ring 9 is fixed on the push rod 2, the proximal end of the fixed ring 9 is fixedly connected with the distal end of the first limiting block 7, a convex column is disposed on the outer surface of the fixed ring 9, the sum of the radial length of the convex column and the outer diameter of the fixed ring 9 is equal to the outer diameter of the first limiting block 7, that is, the outer edges of the convex column and the outer edge of the first limiting block 7 are flush and can be attached to the inner wall of the conveying pipe 1, and the limiting of the turbulent flow net 3 is also realized.
In operation, the push rod 2 and the turbulent flow net 3 can be placed in the delivery tube 1, then the push rod 2 and the turbulent flow net 3 are delivered into the aneurysm through the delivery tube 1, and after the push rod 2 and the turbulent flow net 3 are delivered into the aneurysm by the delivery tube 1, the delivery tube 1 is retracted relative to the push rod 2, namely, when the delivery tube 1 moves along the far end to the near end direction relative to the push rod 2, the turbulent flow net 3 is gradually exposed out of the delivery tube 1, namely, fig. 5.
If the withdrawing structure 4 is not exposed out of the conveying pipe 1, the releasing position of the disturbing net 3 is found to be wrong, the pushing rod 2 can be operated to move along the far end to the near end direction relative to the conveying pipe 1, and the pushing rod 2 drives the disturbing net 3 to withdraw into the conveying pipe 1 through the withdrawing structure 4.
If the withdrawing structure 4 is exposed out of the conveying pipe 1, the releasing position of the disturbing net 3 is found to be wrong, the pushing rod 2 can still be operated to move along the far end to the near end direction relative to the conveying pipe 1, and finally the disturbing net 3 is abutted with the conveying pipe 1 through the second limiting block 8, so that the disturbing net 3 is driven to withdraw into the conveying pipe 1.
If the release position of the disturbing net 3 is correct, the conveying pipe 1 is continuously operated to move along the distal end towards the proximal direction relative to the push rod 2, as shown in fig. 5, the conveying pipe 1 is partially retracted to partially release the disturbing net 3, when the disturbing net 3 is completely exposed out of the conveying pipe 1, that is, the second limiting block 8 is at least partially exposed out of the conveying pipe 1, as shown in fig. 6, the disturbing net 3 is released and is converted from a compressed state to an expanded state, after the disturbing net 3 is expanded in place, the second opening 6 of the disturbing net 3 is radially expanded to be attached to the inner wall of the aneurysm, the first opening 5 of the disturbing net 3 is radially contracted to be attached to the outer wall of the push rod 2, and is autonomously closed after the push rod 2 is retracted, that is, fig. 7, and the disturbing net 3 is formed into a cone shape at this moment.
It will be appreciated that although the invention has been described above in terms of preferred embodiments, the above embodiments are not intended to limit the invention. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art without departing from the scope of the technology, or the technology can be modified to be equivalent. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. An aneurysm turbulence device with a retractable turbulence net comprises a conveying pipe (1), a pushing rod (2) and a turbulence net (3), wherein the pushing rod (2) and the turbulence net (3) are arranged in the conveying pipe (1), the turbulence net (3) is provided with a plurality of meshes, blood is allowed to flow into the aneurysm at a speed lower than that of thrombus formation, the aneurysm turbulence device is characterized in that the pushing rod (2) is provided with a retraction structure (4), the retraction structure (4) is arranged in the conveying pipe (1) and is attached to the inner wall of the conveying pipe (1) after extending into the meshes of the turbulence net (3) in an initial state, the conveying pipe (1) is configured to be unfolded while the turbulence net (3) is exposed out of the conveying pipe (1) when the conveying pipe (1) moves towards the proximal direction along the distal direction relative to the pushing rod (2), and the retraction structure (4) drives the turbulence net (3) to retract into the conveying pipe (1) when the pushing rod (2) moves towards the proximal direction along the distal direction relative to the conveying pipe (1); the disturbing net (3) is provided with a first opening (5) which is automatically and radially contracted and a second opening (6) which is automatically and radially expanded, the withdrawing structure (4) is arranged close to the first opening (5) of the disturbing net (3), after the withdrawing structure (4) is exposed out of the conveying pipe (1), the disturbing net (3) corresponding to the withdrawing structure (4) is automatically and radially expanded, so that the withdrawing structure (4) is separated from meshes of the disturbing net (3), when the disturbing net (3) is completely exposed out of the conveying pipe (1), the second opening (6) of the disturbing net (3) is radially expanded to be attached to the inner wall of an aneurysm, and the first opening (5) of the disturbing net (3) is radially contracted and attached to the outer wall of the pushing rod (2) and is automatically closed after the pushing rod (2) is withdrawn.
2. The aneurysm turbulence device according to claim 1, wherein the withdrawal structure (4) is a protruding column, which protrudes into the corresponding mesh of the turbulence net (3) and engages with the inner wall of the delivery tube (1).
3. The aneurysm turbulence device according to claim 2, wherein a plurality of the projections are provided, the plurality of projections being uniformly provided along the circumferential direction of the pushing rod (2).
4. The aneurysm turbulence device according to claim 2, wherein the end of the boss that is attached to the delivery tube (1) is formed as an arc surface.
5. The aneurysm turbulence device according to claim 1, wherein the push rod (2) is fixed with a first limiting block (7) and a second limiting block (8), the delivery tube (1) is movably sleeved on the push rod (2) and limits the turbulence net (3) between the first limiting block (7) and the second limiting block (8) to be in a compressed state, and the retracting structure (4) is located between the first limiting block (7) and the second limiting block (8) and is arranged close to the first limiting block (7).
6. The aneurysm turbulence device according to claim 5, wherein the pushing rod (2) is further fixed with a fixing ring (9), a proximal end of the fixing ring (9) is fixedly connected with a distal end of the first limiting block (7), and the retracting structure (4) is disposed on an outer surface of the fixing ring (9).
7. The aneurysm turbulence device according to claim 5, wherein the withdrawal structure (4) and the turbulence net (3) are released and switch from the compressed state to the expanded state when the turbulence net (3) is fully exposed to the delivery tube (1).
8. The aneurysm turbulence device according to claim 5, wherein the sum of the outer diameter of the second restriction block (8) and the wall thickness of the turbulence net (3) is larger than the inner diameter of the delivery tube (1), and the push rod (2) is configured to drive the turbulence net (3) to be retracted into the delivery tube (1) by the second restriction block (8) during movement of the push rod (2) in a distal-to-proximal direction relative to the delivery tube (1) when the retraction structure (4) is exposed to the delivery tube (1) but the turbulence net (3) is not completely exposed to the delivery tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311124880.9A CN116849749B (en) | 2023-09-02 | 2023-09-02 | Aneurysm vortex device with retractable vortex net |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311124880.9A CN116849749B (en) | 2023-09-02 | 2023-09-02 | Aneurysm vortex device with retractable vortex net |
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| CN116849749A CN116849749A (en) | 2023-10-10 |
| CN116849749B true CN116849749B (en) | 2023-11-17 |
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| CN202311124880.9A Active CN116849749B (en) | 2023-09-02 | 2023-09-02 | Aneurysm vortex device with retractable vortex net |
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| WO2002054980A2 (en) * | 2001-01-16 | 2002-07-18 | Cordis Neurovascular, Inc. | Detachable self-expanding aneurysm cover device |
| CN113116449A (en) * | 2021-05-10 | 2021-07-16 | 杭州德诺脑神经医疗科技有限公司 | Delivery system and delivery guidewire thereof |
| CN115700112A (en) * | 2021-07-30 | 2023-02-07 | 斯瑞克公司 | Medical support |
| CN115363834A (en) * | 2022-09-19 | 2022-11-22 | 苏州美创医疗科技有限公司 | Internal hook type TIPS (TIPS) stent withdrawing device, system and method |
| CN115944343A (en) * | 2022-12-07 | 2023-04-11 | 上海心玮医疗科技股份有限公司 | Tumor internal dense net support and support system |
| CN116211377A (en) * | 2023-03-16 | 2023-06-06 | 上海心玮医疗科技股份有限公司 | Intratumoral turbulence device |
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| CN116849749A (en) | 2023-10-10 |
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