CN116849750A - Aneurysm turbulent flow device capable of being mechanically released - Google Patents
Aneurysm turbulent flow device capable of being mechanically released Download PDFInfo
- Publication number
- CN116849750A CN116849750A CN202311124881.3A CN202311124881A CN116849750A CN 116849750 A CN116849750 A CN 116849750A CN 202311124881 A CN202311124881 A CN 202311124881A CN 116849750 A CN116849750 A CN 116849750A
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- Prior art keywords
- net
- turbulence
- aneurysm
- push rod
- restriction
- Prior art date
- 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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- 206010002329 Aneurysm Diseases 0.000 title claims abstract description 50
- 230000008602 contraction Effects 0.000 claims 1
- 230000003966 vascular damage Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000002601 intratumoral effect Effects 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 1
- 208000024248 Vascular System injury Diseases 0.000 description 1
- 208000012339 Vascular injury Diseases 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 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 capable of being released mechanically, which comprises a conveying pipe, a pushing rod and a turbulence net, wherein the pushing rod and the turbulence net are positioned in the conveying pipe, the conveying pipe is used for conveying the pushing rod and the turbulence net into an aneurysm, the turbulence net is provided with a first opening which is automatically and radially contracted and a second opening which is automatically and radially expanded, the pushing rod is fixedly provided with a first limiting block and a second limiting block, the conveying pipe is movably sleeved on the pushing rod and limits the turbulence net between the first limiting block and the second limiting block to be in a compressed state, the conveying pipe is configured to retract relative to the pushing rod so that when the turbulence net is exposed out of the conveying pipe, the turbulence net is released and converted into an unfolding state from the compressed state, after the turbulence net is unfolded in place, the second opening of the turbulence net is radially expanded to be attached to the inner wall of the aneurysm, and the first opening of the turbulence net is radially contracted and attached to the outer wall of the pushing rod and is automatically closed after the pushing rod is retracted. The invention can be mechanically released, is convenient for doctors to operate, and improves the operation convenience.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an aneurysm turbulence device capable of being mechanically released.
Background
The aneurysm turbulence device is used for blocking the aneurysm orifice of the aneurysm by releasing a turbulence net in the aneurysm, so that the purposes of blocking blood flow and gradually shrinking the aneurysm are realized. In order to improve the stability of the release of the turbulent flow net, more and more aneurysm turbulent flow devices release the turbulent flow net in a mechanical release manner, for example, chinese patent CN115607218A discloses a mechanical release device for an intratumoral implant, which comprises a conveying rod, an annular connecting piece and an inner core piece, wherein the conveying rod is of a hollow structure, a containing cavity is formed inside the conveying rod, the annular connecting piece is arranged at the far end of the conveying rod and is connected with the turbulent flow net, namely one end of the intratumoral implant, the inner core piece is movably arranged in the containing cavity, the far end of the inner core piece is limited at the far end of the conveying rod through the limit of the inner core piece and the limit of the annular connecting piece, and when the turbulent flow net is conveyed to a lesion part, the inner core piece is moved to release the limit between the inner core piece and the annular connecting piece, so that the turbulent flow net is separated from the conveying rod, and the release of the turbulent flow net is realized.
The CN115607218A described above is to release the release of the turbulent flow net by operating the core member to release the stopper of the core member and the annular connecting member after the turbulent flow net is completely located in the aneurysm. While the mechanical release mode of CN115607218A is simpler, more reliable and less prone to false release than the conventional release mode, the operation convenience of CN115607218A needs to be improved because CN115607218A requires additional operation, i.e. moving the core member, to release the stream net.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides an aneurysm turbulence device capable of being mechanically released so as to overcome the technical defects pointed out in the background art.
According to the invention, there is provided a mechanically releasable aneurysm turbulence device comprising a delivery tube, a push rod and a turbulence net positioned in the delivery tube, the delivery tube being adapted to deliver the push rod and the turbulence net into an aneurysm, the turbulence net having a first opening that is autonomously radially contracted and a second opening that is autonomously radially expanded, the push rod being secured with a first restriction block and a second restriction block, the delivery tube being movably sleeved on the push rod and restraining the turbulence net between the first restriction block and the second restriction block in a compressed state, the delivery tube being configured to be retracted relative to the push rod such that the turbulence net is released and converted from the compressed state to the expanded state when exposed to the delivery tube, the second opening of the turbulence net radially expanding to fit the inner wall of the aneurysm, the first opening of the turbulence net radially contracting to fit the outer wall of the push rod and being autonomously closed after retraction of the push rod.
Further, first limiting block and second limiting block all bulge in the push rod, and homoenergetic and conveyer pipe's inner wall laminating, encircle between first limiting block, second limiting block, push rod, the conveyer pipe and form the restriction space, and the vortex net is compressed in the restriction space.
Further, when the conveying pipe is configured to retract relative to the pushing rod and the second limiting block is at least partially exposed out of the conveying pipe, the turbulent flow net is released, and the released turbulent flow net is gradually unfolded and formed into a cone shape.
Further, the first limiting block and the second limiting block are sequentially arranged from the near end to the far end, a limiting step for limiting a first opening of the interference flow net is formed between the first limiting block and the pushing rod, and a limiting step for limiting a second opening of the interference flow net is formed between the second limiting block and the pushing rod.
Further, the second limiting block is located at the distal end of the pushing rod, and the distal end of the second limiting block is formed into an arc surface for reducing vascular injury.
Further, the proximal end of the second restriction block is formed as an arc surface facilitating the return of the first opening out of the drainage of the interference net.
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 disturbance flow net is not completely exposed out of the conveying pipe, the pushing rod is configured to be in a state of abutting the disturbance flow net and the conveying pipe together by at least the second limiting block in the process of retracting relative to the conveying pipe, so that the pushing rod can drive the disturbance flow net to retract.
Further, the push rod comprises a first push section and a second push section, the rigidity of the second push section is smaller than that of the first push section, and the first limiting block and the second limiting block are both fixed on the second push section.
Further, the diameter of the second pushing section is smaller than the diameter of the first pushing section.
Further, a winding spring for reducing rigidity of the second pushing section is fixed on the second pushing section, and the first limiting block and the second limiting block are fixed on the winding spring and are both arranged in a protruding mode.
Compared with the prior art, the turbulent flow net is provided with the first opening which is automatically contracted radially and the second opening which is automatically expanded radially, and the first limiting block and the second limiting block are fixed on the pushing rod, so that the turbulent flow net can be limited between the first limiting block and the second limiting block only through the conveying pipe, the purpose that the turbulent flow net can be released only by retracting the conveying pipe is finally realized, the operation convenience is high, the operation of a doctor is facilitated, and in addition, after the pushing rod is retracted, the first opening of the turbulent flow net is automatically closed, and the function of blocking an aneurysm opening is not influenced.
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 a first embodiment of the present invention.
Fig. 2 is a schematic structural view of a pushing rod according to a first embodiment of the present invention.
Fig. 3 is a schematic structural view of a spoiler after being unfolded in accordance with a first embodiment of the present invention.
Fig. 4-5 are schematic views illustrating the use process of the first embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a pushing rod in the second embodiment of the present invention.
Fig. 7 is a schematic view of a partial structure of a push rod and a spoiler in a second embodiment of the invention.
In the accompanying drawings: 1 is a conveying pipe, 2 is a push rod, 3 is a disturbance flow net, 4 is a first opening, 5 is a second opening, 6 is a first limiting block, 7 is a second limiting block, 8 is a first push section, 9 is a second push section, 10 is a winding spring, 11 is a retracting structure, and 12 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.
Embodiment one: as shown in fig. 1 to 3, the aneurysm turbulence device of the present embodiment includes a conveying pipe 1, a pushing rod 2 and a turbulence net 3 located in the conveying pipe 1, where the conveying pipe 1 is used to convey the pushing rod 2 and the turbulence net 3 into an aneurysm, the turbulence net 3 has a plurality of meshes, after the turbulence net 3 seals the aneurysm opening of the aneurysm, the plurality of meshes on the turbulence net 3 allow blood to flow into the aneurysm at a speed lower than that of thrombosis, so that the turbulence net 3 can block blood flow and gradually shrink the aneurysm, the turbulence net 3 is made of self-expandable material, such as nickel titanium, and has a first opening 4 and a second opening 5, where the first opening 4 and the second opening 5 are disposed opposite and heat-treated to be shaped, so that after the turbulence net 3 is released, the first opening 4 is automatically radially contracted and can be automatically closed, the second opening 5 is automatically radially expanded, after the turbulence net 3 seals the aneurysm opening in place, the second opening 5 of the turbulence net 3 is radially expanded and is inner wall of the aneurysm, and the first opening 4 of the turbulence net 3 is radially contracted and closed, so that the function of sealing the aneurysm opening is not affected.
The push rod 2 is a solid rod, a first limiting block 6 and a second limiting block 7 are fixed on the push rod 2, the first limiting block 6 and the second limiting block 7 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 4 of the disturbance flow net 3 is formed between the far end of the first limiting block 6 and the push rod 2, and a limiting step for limiting the second opening 5 of the disturbance flow net 3 is also formed between the near end of the second limiting block 7 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 6 and the second limiting block 7 to be in a compressed state, specifically, the first limiting block 6 and the second limiting block 7 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 6, the second limiting block 7, the push rod 2 and the conveying pipe 1, so that the turbulent flow net 3 is compressed in the limiting space.
In the operation, the push rod 2 and the turbulent flow net 3 can be firstly placed in the conveying pipe 1, and then the push rod 2 and the turbulent flow net 3 are conveyed into the aneurysm through the conveying pipe 1. In order to improve the delivery performance, so that the whole aneurysm spoiler device can reach the aneurysm through a complicated tortuous blood vessel, in addition to setting the push rod 2 and the delivery rod 1 to have elastic properties, the push rod 2 of the present embodiment includes a first push section 8 and a second push section 9, the rigidity of the second push section 9 is smaller than that of the first push section 8, and both the first restriction block 6 and the second restriction block 7 are fixed on the second push section 9, that is, the distal end section of the whole aneurysm spoiler device has better delivery performance. In addition, the diameter of the second pushing section 9 is smaller than that of the first pushing section 8, a wrap spring 10 for reducing the rigidity of the second pushing section 9 is fixed on the second pushing section 9, and the first limiting block 6 and the second limiting block 7 are fixed on the wrap spring 10 and are both arranged to protrude out of the wrap spring 10, so that the conveying performance is further improved.
After the delivery tube 1 delivers the push rod 2 and the turbulent flow net 3 into the aneurysm, when the delivery tube 1 is retracted relative to the push rod 2, namely, the delivery tube 1 moves relative to the push rod 2 in the proximal direction along the distal end, the turbulent flow net 3 gradually exposes out of the delivery tube 1, when the turbulent flow net 3 is completely exposed out of the delivery tube 1, namely, the second limiting block 7 is at least partially exposed out of the delivery tube 1, the turbulent flow net 3 is released and converted from a compressed state to an expanded state, after the turbulent flow net 3 is expanded in place, the second opening 5 of the turbulent flow net 3 is radially expanded to be attached to the inner wall of the aneurysm, the first opening 4 of the turbulent flow net 3 is radially contracted to be attached to the outer wall of the push rod 2 and is automatically closed after the push rod 2 is retracted, and the turbulent flow net 3 is formed into a cone shape. Therefore, in this embodiment, the purpose of knowing the disturbance flow net 3 is achieved in the process of retracting the conveying pipe 1 to release the disturbance flow net 3, that is, the purpose of releasing the disturbance flow net 3 can be achieved only by retracting the conveying pipe 1, so that the operation convenience is high, and the operation is facilitated for a doctor.
The second limiting block 7 is located at the distal end of the pushing rod 2, namely, the second limiting block 7 plays a role in guiding pushing of the pushing rod 2, so that the distal end of the second limiting block 7 is formed into an arc surface so as to reduce damage to blood vessels, and meanwhile, the proximal end of the second limiting block 7 is also formed into an arc surface so that the second limiting block 7 can be carried back smoothly to withdraw from the first opening 4 of the interference flow net 3 in the process of withdrawing the pushing rod 2. The sum of the outer diameter of the second limiting block 7 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 7 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 a retracting process of the spoiler mesh 1, at least the second limiting block 7 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 7, so that the withdrawal of the spoiler mesh 3 is realized.
During the use, carry push rod 2 and vortex net 3 to the aneurysm through conveyer pipe 1, then withdraw conveyer pipe 1 in order to release and release disturbance flow net 3, the in-process, as shown in fig. 4, conveyer pipe 1 partial withdrawal makes the disturbance flow net 3 partial release, just after conveyer pipe 1 withdraws in place, as shown in fig. 5, disturbance flow net 3 release completely and release, the disturbance flow net 3 after release is laminated and is formed into the toper with the aneurysm inner wall, finally withdraw push rod 2 makes it withdraw from disturbance flow net 3 can, the operation is comparatively convenient.
Embodiment two: unlike the first embodiment, as shown in fig. 6 and 7, the present embodiment adds a retraction structure 11, and preferably uses the retraction structure 11 to retract the disturbance network 3, and uses the second limiting block 7 to retract the disturbance network 3 after the retraction structure 11 is exposed to the delivery pipe 1, that is, the present embodiment has a dual retraction function.
The retracting structure 11 is fixed on the push rod 2 and is located between the first and second limiting blocks 6, 7 and is arranged close to the first limiting block 6. In the initial state, the withdrawing structure 11 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 11 is arranged near the first opening 4 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 11 is not exposed out of the conveying pipe 1, the withdrawing structure 11 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 11 when the push rod 2 moves relative to the conveying pipe 1 in the far end and proximal direction, if the withdrawing structure 11 is exposed out of the conveying pipe 1, the turbulent flow net 3 at the corresponding withdrawing structure 11 is automatically and radially expanded so that the withdrawing structure 11 is separated from the mesh of the turbulent flow net 3, the first opening 4 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 along the far end to the near end direction 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 7, when the turbulent flow net 3 is completely exposed out of the conveying pipe 1, namely, the withdrawing structure 11 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 along the far end to the near end direction relative to the conveying pipe 1, the pushing rod 2 drives the second limiting block 7 to withdraw the turbulent flow net 3, so that the first opening 4 of the turbulent flow net 3 is automatically contracted and automatically closed, the second opening 5 of the turbulence 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 11 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 11, 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 retracting structure 11 of this embodiment is a plurality of protruding columns, which extend into the corresponding mesh holes of the disturbance flow net 3 and then are attached to the inner wall of the conveying pipe 1, and of course, the protruding columns may be single, and the plurality of protruding columns of this embodiment are uniformly arranged along the circumferential direction of the pushing rod 2, and one end of the protruding columns attached to the conveying pipe 1 is formed into an arc surface, so as to reduce the friction force formed between the conveying pipe 1 and the protruding columns in the retracting process. In order to facilitate the shaping of the push rod 2, in this embodiment, a fixed ring 12 is fixed on the push rod 2, the proximal end of the fixed ring 12 is fixedly connected with the distal end of the first limiting block 6, a convex column is disposed on the outer surface of the fixed ring 12, the sum of the radial length of the convex column and the outer diameter of the fixed ring 12 is equal to the outer diameter of the first limiting block 6, that is, the outer edges of the convex column and the outer edge of the first limiting block 6 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.
Other structures of this embodiment are identical to those of the embodiment, and are not described herein.
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 (10)
1. The utility model provides an aneurysm vortex device that can mechanical release, includes conveyer pipe (1) and is located push rod (2) and vortex net (3) in conveyer pipe (1), and conveyer pipe (1) are used for carrying push rod (2) and vortex net (3) to in the aneurysm, characterized in that, vortex net (3) have autonomous radial contraction's first opening (4) and autonomous radial expansion's second opening (5), are fixed with first restriction piece (6) and second restriction piece (7) on push rod (2), and conveyer pipe (1) movably cover is established on push rod (2) and is restricted vortex net (3) and make it be in compressed state between first restriction piece (6) and second restriction piece (7), and conveyer pipe (1) are configured to relative push rod (2) withdraw so that vortex net (3) when exposing in conveyer pipe (1), and vortex net (3) are released and are by compressed state and are converted to expanded state, and vortex net (3) are closed with radial expansion opening (4) and radial expansion of second restriction piece (3) are closed after push rod (2) are merged.
2. The aneurysm turbulence device according to claim 1, wherein the first limiting block (6) and the second limiting block (7) are both protruded from the pushing rod (2) and can be attached to the inner wall of the conveying pipe (1), a limiting space is formed by surrounding the first limiting block (6), the second limiting block (7), the pushing rod (2) and the conveying pipe (1), and the turbulence net (3) is compressed in the limiting space.
3. The aneurysm turbulence device according to claim 2, wherein the delivery tube (1) is configured to retract relative to the push rod (2) such that the turbulence net (3) is released when the second restriction block (7) is at least partially exposed to the delivery tube (1), the released turbulence net (3) being gradually unfolded and formed into a cone shape.
4. The aneurysm turbulence device according to claim 2, wherein the first restriction block (6) and the second restriction block (7) are arranged in sequence from the proximal end to the distal end, a restriction step is formed between the first restriction block (6) and the push rod (2) for restricting the first opening (4) of the turbulence net (3), and a restriction step is formed between the second restriction block (7) and the push rod (2) for restricting the second opening (5) of the turbulence net (3).
5. The aneurysm turbulence device according to claim 2, wherein the second restriction block (7) is located at the distal end of the push rod (2), the distal end of the second restriction block (7) being formed as an arc surface for reducing vascular damage.
6. The aneurysm turbulence device according to claim 2, wherein the proximal end of the second restriction block (7) is formed as an arc surface facilitating the withdrawal of the first opening (4) of the drainage interference net (3).
7. The aneurysm turbulence device according to claim 1, wherein the sum of the outer diameter of the second restriction block (7) and the wall thickness of the turbulence net (3) is larger than the inner diameter of the delivery tube (1), and when the turbulence net (3) is not completely exposed out of the delivery tube (1), the push rod (2) is configured to be retracted relative to the delivery tube (1), and at least the second restriction block (7) is in a state of abutting the turbulence net (3) against the delivery tube (1), so that the push rod (2) can drive the turbulence net (3) to retract.
8. The aneurysm turbulence device according to claim 1, wherein the push rod (2) comprises a first push section (8) and a second push section (9), the second push section (9) having a stiffness smaller than the stiffness of the first push section (8), the first and second restriction blocks (6, 7) being fixed to the second push section (9).
9. The aneurysm turbulence device according to claim 8, wherein the diameter of the second pushing section (9) is smaller than the diameter of the first pushing section (8).
10. The aneurysm turbulence device according to claim 9, wherein the second pushing section (9) is fixed with a wrap spring (10) for reducing its stiffness, and the first and second restriction blocks (6, 7) are fixed on the wrap spring (10) and each protrude out of the wrap spring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311124881.3A CN116849750B (en) | 2023-09-02 | 2023-09-02 | Aneurysm turbulent flow device capable of being mechanically released |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311124881.3A CN116849750B (en) | 2023-09-02 | 2023-09-02 | Aneurysm turbulent flow device capable of being mechanically released |
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| CN116849750B CN116849750B (en) | 2023-11-21 |
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