CN116439770A - Plugging device of vascular closer - Google Patents

Plugging device of vascular closer Download PDF

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Publication number
CN116439770A
CN116439770A CN202310409578.1A CN202310409578A CN116439770A CN 116439770 A CN116439770 A CN 116439770A CN 202310409578 A CN202310409578 A CN 202310409578A CN 116439770 A CN116439770 A CN 116439770A
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CN
China
Prior art keywords
connecting rod
catheter
anchoring
anchoring structure
blood vessel
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.)
Pending
Application number
CN202310409578.1A
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Chinese (zh)
Inventor
周硕
张玉成
黄裕杰
李露
张妮
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Shanghai Ensheng Medical Technology Co ltd
Original Assignee
Shanghai Ensheng Medical Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Ensheng Medical Technology Co ltd filed Critical Shanghai Ensheng Medical Technology Co ltd
Priority to CN202310409578.1A priority Critical patent/CN116439770A/en
Publication of CN116439770A publication Critical patent/CN116439770A/en
Pending legal-status Critical Current

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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
    • A61B17/12027—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
    • A61B17/12099—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
    • 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
    • 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
    • A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
    • 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
    • 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

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Reproductive Health (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The application provides a plugging device of a vascular closer, which relates to the technical field of vascular closers and comprises a connecting rod, an anchoring structure and a diaphragm structure; the connecting rod is configured to: following the sheath through the puncture lumen and furthest into the vessel interior; the diaphragm structure is located at the distal-most end of the connecting rod, the diaphragm structure configured to: the most distal end of the connecting rod and the catheter enter the blood vessel through folding and contracting in the interior of the catheter, and are released to be unfolded after the catheter is retracted so as to be attached to the inner wall of the blood vessel; the anchoring structure is disposed on the connecting rod and is adjustable relative to the connecting rod, the anchoring structure being configured to: pushing the catheter towards the outer wall of the blood vessel, and anchoring the catheter on the outer wall of the blood vessel after retracting the catheter; the connecting rod is also provided with a guide wire hole which is used for the guide wire to pass through. Through setting up the connecting rod, only need several steps can realize the quick release of diaphragm and to the shutoff of puncture chamber hole, reduced the operation steps that plugging device implanted in vivo, shortened the learning curve.

Description

Plugging device of vascular closer
Technical Field
The application relates to the technical field of vascular occluders, in particular to a plugging device of a vascular occluder.
Background
Cardiovascular and cerebrovascular diseases are the first killer of human beings, and the intervention operation has small trauma and good effect, so the method is a main means for treatment at present. Vascular closure refers to the creation of a lumen at the vascular puncture site during minimally invasive cardiovascular diagnosis and interventional procedures, which must be closed after the procedure is completed to prevent blood loss. Typically, vessel closure may be accomplished in four ways, manual compression, closure aids, surgical sutures, and vessel occluders, respectively.
Vascular occluders generally comprise a delivery assembly and a membrane, the delivery assembly being comprised of components such as a catheter, sheath and guidewire, and being primarily used to deliver the membrane into the vessel and expand the membrane to occlude the puncture lumen.
At present, a plurality of types of vascular closers are available on the market, and each vascular closer has different advantages and characteristics, but most vascular closers have a common defect, are complex to operate and require a longer learning curve.
Therefore, there is a need for a new vascular closure that reduces the number of operating steps, rapidly completes the release of the membrane, and shortens the learning curve.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide a plugging device for a vascular closer, which can effectively reduce the operation steps, rapidly complete the release of the membrane to plug the puncture cavity, and shorten the learning curve.
The embodiment of the specification provides the following technical scheme:
the embodiment of the specification provides a plugging device of a vascular closer, which comprises a connecting rod, an anchoring structure and a diaphragm structure;
the connecting rod is configured to: following the sheath through the puncture lumen and furthest into the vessel interior;
the diaphragm structure is located at the most distal end of the connecting rod, the diaphragm structure is an elastic memory structure, and the diaphragm structure is configured to: the most distal end of the connecting rod and the catheter enter the blood vessel through folding and contracting in the interior of the catheter, and are released to be unfolded after the catheter is retracted so as to be attached to the inner wall of the blood vessel;
the anchoring structure is disposed on the connecting rod and is adjustable relative to the connecting rod, the anchoring structure being configured to: pushing the catheter towards the outer wall of the blood vessel, and anchoring the catheter on the outer wall of the blood vessel after retracting the catheter;
the connecting rod is also provided with a guide wire hole, and the guide wire hole is used for a guide wire to pass through and enter the blood vessel.
Through above-mentioned technical scheme, set up the connecting rod as the guider of diaphragm structure and anchoring structure, in the operation in-process, with the sheath cooperation that the postoperative is detained, send into the connecting rod earlier, two catheters of recycle, a pipe propelling movement diaphragm structure gets into the vascular inner wall and releases the diaphragm structure, make the diaphragm structure release in vascular inner wall and expand, carry out the shutoff to puncture chamber hole, another pipe propelling movement anchoring structure is close to the relative connecting rod of vascular outer wall direction and adjusts, make anchoring structure anchor on vascular outer wall, thereby the release of completion diaphragm that can be quick and to puncture chamber hole's shutoff, simultaneously still anchoring structure can fix the position of diaphragm structure, whole journey only need several steps to accomplish, compare in prior art the vascular closing device that is up to tens several steps, the operation has obtained the simplification by a wide margin, and then very big shortening the learning curve.
Preferably, the connecting rod is provided with an internal hole, the anchoring structure penetrates through the connecting rod through the internal hole, and the anchoring structure is multistage adjustable relative to the connecting rod along the axis direction of the internal hole.
Through above-mentioned technical scheme, set up the multistage adjustable of anchoring structure relative connecting rod to make anchoring structure can adapt to the vascular outer wall of different thickness, and then whole plugging device possesses better adaptability.
Preferably, a plurality of clamping teeth are arranged on the hole wall of the inner hole along the direction parallel to the axis, clamping grooves matched with the clamping teeth are formed in the anchoring structure, and the anchoring structure realizes multistage adjustability of the relative connecting rod through cooperation between the clamping grooves and the clamping teeth.
Preferably, one end of the connecting rod, which is far away from the diaphragm structure, is also provided with a release structure for connecting the bracket, and the release structure and the connecting rod are clamped by a plurality of elastic sheets;
the release structure, the connecting rod and the plurality of spring plates are configured as follows: the following sheath tube enters between the skin and the outer wall of the blood vessel, and after the sheath tube is retracted, the plurality of elastic sheets release the clamping of the releasing structure, so that the releasing structure realizes releasing relative to the connecting rod and is retracted following the sheath tube;
the guide wire hole is arranged on the release structure and aligned with the guide wire hole on the connecting rod for threading the guide wire.
Through above-mentioned technical scheme, set up a plurality of shell fragment centre gripping connecting rod and release structure, and then after accomplishing the implantation of anchoring structure and diaphragm structure, can realize the release of release structure relative connecting rod through withdrawing the sheath for release structure can follow the sheath and withdraw together, has saved extra withdrawal step.
Preferably, the anchoring structure is sleeved on the periphery of the connecting rod, and the anchoring structure is an elastic memory structure, and a fixing part for fixing the anchoring structure is further arranged on the connecting rod, and the anchoring structure is configured as follows: the catheter is pushed to the direction close to the outer wall of the blood vessel, reaches the fixing part, is fixed relative to the connecting rod, and is anchored on the outer wall of the blood vessel when the catheter is retracted.
Preferably, the anchoring structure is provided with a fixing hole matched with the fixing part;
when the anchoring structure is pushed to the fixing part position by the catheter, the fixing part passes through the fixing hole and forms an embedded relation with the fixing hole, so that the anchoring structure is fixed relative to the connecting rod.
Preferably, the membrane structure comprises a membrane and a framework, wherein the membrane and the framework are both made of degradable high polymer materials;
when the membrane is attached to the inner wall of a blood vessel, the framework is matched with the anchoring structure to anchor the membrane.
Through above-mentioned technical scheme, set up the skeleton and support the diaphragm for the diaphragm can be more stable laminating in the blood vessel inner wall, the reinforcing is to the shutoff effect in puncture chamber hole.
Preferably, a split type structure is arranged between the membrane structure and the connecting rod.
Preferably, the included angle between the membrane structure and the connecting rod is 30-45 degrees.
Through the technical scheme, the whole structure is more suitable for operation, and the membrane is more convenient to release for some blood vessels.
Preferably, the membrane structure, the connecting rod and the anchoring structure are all made of degradable high polymer materials.
Through the technical scheme, the membrane structure, the connecting rod and the anchoring structure can be completely degraded in a human body, so that the damage to the human body is reduced.
Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least:
through setting up the connecting rod as the guider of diaphragm structure and anchoring structure, in the operation, with the sheath cooperation that the postoperative is detained, send into the connecting rod earlier, two catheters of recycle, a pipe propelling movement diaphragm structure gets into the vascular inner wall and releases the diaphragm structure, make the diaphragm structure release in vascular inner wall and expand, carry out the shutoff to puncture chamber hole, another pipe propelling movement anchoring structure is close to the relative connecting rod of vascular outer wall direction and adjusts, make anchoring structure anchor on vascular outer wall, thereby the release of completion diaphragm that can be quick and to puncture chamber hole's shutoff, simultaneously still anchoring structure can fix the position of diaphragm structure, whole journey only need several steps to accomplish, compare in the vascular closure device that is up to ten more steps among the prior art, the operation has obtained the simplification by a wide margin, and then very big shortened the learning curve. .
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure in the first embodiment of the present application;
FIG. 2 is a schematic view of the overall structure of the first embodiment of the present application from another perspective;
FIG. 3 is a schematic cross-sectional view of the overall structure in accordance with the first embodiment of the present application;
FIG. 4 is a schematic diagram of the diaphragm structure of the present application;
FIG. 5 is a schematic illustration of a diaphragm structure of another configuration in the present application;
FIG. 6 is a schematic view of the overall structure of a second embodiment of the present application;
FIG. 7 is a schematic view of the overall structure of the second embodiment of the present application from another perspective;
fig. 8 is a schematic view of an anchoring structure in a second embodiment of the present application.
Reference numerals: 1. a connecting rod; 2. an anchoring structure; 3. a diaphragm structure; 31. a membrane; 32. a skeleton; 4. an internal cavity; 5. latch teeth; 6. a clamping groove; 7. releasing the structure; 8. a spring plate; 9. a guidewire port; 10. a fixing part; 11. and a fixing hole.
Detailed Description
Embodiments of the present application are described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present application will become apparent to those skilled in the art from the present disclosure, when the following description of the embodiments is taken in conjunction with the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. The present application may be embodied or carried out in other specific embodiments, and the details of the present application may be modified or changed from various points of view and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, apparatus may be implemented and/or methods practiced using any number and aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concepts of the application by way of illustration, and only the components related to the application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details.
The following describes the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 3, the embodiment of the present disclosure provides an occlusion device of a vascular occluder, which comprises a connecting rod 1, an anchoring structure 2 and a membrane structure 3.
As shown in fig. 3 and 4, the diaphragm structure 3 is located at the most distal end of the connecting rod 1. The membrane structure 3 is an elastic memory structure, and includes a membrane 31 and a skeleton 32. Wherein, the membrane 31 and the framework 32 are both made of degradable polymer materials, in particular PLA, PGA, PCL or PEG.
Further, the framework 32 is in a cross shape, the center of the membrane 31 is overlapped with the cross center of the framework 32, and the support of the membrane 31 on the inner wall of the blood vessel is enhanced through the arrangement of the framework 32, and the membrane 31 can be anchored by being matched with the anchoring structure 2, so that the membrane 31 can be better attached to the inner wall of the blood vessel.
In other embodiments, as shown in FIG. 5, the configuration of the skeleton 32 may also be in-line.
As shown in fig. 1 to 3, further, a split structure is formed between the diaphragm structure 3 and the connecting rod 1, an insertion hole is formed in a central area of the diaphragm 31, and the connecting rod 1 is connected with the diaphragm 31 through the insertion hole in an insertion manner.
In other embodiments, the membrane structure 3 and the connecting rod 1 may be formed as a single piece.
The whole connecting rod 1 is the return bend form, and the one section that is close to diaphragm structure 3 is crooked structure to be 30 degrees to 45 degrees contained angles to diaphragm structure 3, the one section that connecting rod 1 kept away from crooked structure is the straight tube structure, also is 30 degrees to 45 degrees contained angles between straight tube structure and the diaphragm structure 3.
An inner hole 4 is formed in one end, away from the diaphragm structure 3, of the connecting rod 1, and the inner hole 4 penetrates through the connecting rod 1 along the extending direction of the straight pipe structure. The anchoring structure 2 is arranged in the inner hole 4 in a penetrating way, and the connection with the connecting rod 1 is realized through the inner hole 4.
The wall of the inner hole 4 is provided with a plurality of clamping teeth 5 along the direction parallel to the axis, and the anchoring structure 2 is provided with clamping grooves 6 matched with the clamping teeth 5. The anchoring structure 2 realizes multistage adjustability relative to the connecting rod 1 through the cooperation between the clamping groove 6 and the plurality of clamping teeth 5.
In other embodiments, a plurality of clamping grooves 6 may be formed on the wall of the inner hole 4, and the clamping teeth 5 matched with the clamping grooves 6 are formed on the anchoring structure 2, so that multistage adjustment of the anchoring structure 2 relative to the connecting rod 1 is realized.
In actual use, the connecting rod 1 passes through the puncture cavity hole along with the sheath tube and enters the inside of the blood vessel at the most distal end; the membrane structure 3 is contracted in the interior of the catheter by folding, and enters the interior of the blood vessel along with the most distal end of the connecting rod 1 and the catheter and is released and unfolded after the catheter is retracted so as to be attached to the inner wall of the blood vessel; the anchoring structure 2 is pushed to the direction of the outer wall of the blood vessel through the catheter and is anchored on the outer wall of the blood vessel after the catheter is retracted, and as the anchoring structure 2 is adjustable in multiple stages relative to the connecting rod 1, the anchoring structure can push different distances to the outer wall of the blood vessel with different thicknesses, and has good adaptability.
The whole plugging device is put into the process, only utilizes sheath pipe and two pipes that the postoperative is detained, cooperates several operations to accomplish the implantation of diaphragm 31 and accomplish the shutoff to puncture chamber hole, compares in prior art to the vascular closure device of dozens of steps up to, has obtained the simplification by a wide margin of operation, and then very big shortened the learning curve.
The end of the connecting rod 1 remote from the membrane structure 3 is also provided with a release structure 7 for connecting the brackets. The release structure 7 and the connecting rod 1 are clamped by a plurality of elastic sheets 8.
Two spring pieces 8 are symmetrically arranged on the circumferential outer wall of the connecting rod 1 and are embedded into the mounting groove about the axis, the number of the spring pieces 8 is two, the two spring pieces 8 are respectively embedded into the mounting groove, so that the fixing of the connecting rod 1 is realized, and the two spring pieces 8 are far away from the opposite ends of the connecting rod 1 to clamp the release structure 7.
In the in-service use process, the release structure 7, the connecting rod 1 and the two elastic sheets 8 are wrapped by the sheath tube and enter between the skin and the outer wall of the blood vessel along with the sheath tube, after the sheath tube is retracted, the two elastic sheets 8 release the clamping of the release structure 7, so that the release structure 7 is released relative to the connecting rod 1 and is retracted along with the sheath tube, and the elastic sheets are withdrawn from the human body, so that the burden on the human body can be effectively lightened, and no additional operation is required.
In other embodiments, the number of the elastic pieces 8 may be three or four, and all are uniformly distributed along the circumferential outer wall of the connecting rod 1.
Further, the mounting groove is T-shaped, and the corresponding spring plate 8 is also T-shaped.
The wire guide holes 9 for the penetration of the guide wires are formed in the connecting rod 1 and the release structure 7, the wire guide holes 9 in the connecting rod 1 penetrate through the two ends of the connecting rod 1 along the extending direction of the connecting rod 1, the wire guide holes 9 in the release structure 7 penetrate through the two ends of the release structure 7 along the axial direction of the release structure 7, and the wire guide holes 9 in the release structure 7 are aligned with the wire guide holes 9 in the connecting rod 1.
Further, the connecting rod 1, the anchoring structure 2 and the elastic sheet 8 are all made of degradable high polymer materials, specifically PLA, PGA, PCL or PEG and the like.
Example two
The difference from the first embodiment is that the configuration of the connecting rod 1 and the anchoring structure 2 is different as shown in fig. 6 to 8. The connecting rod 1 is in a straight rod shape as a whole and forms an included angle of 30-45 degrees with the diaphragm structure 3. The anchoring structure 2 is an elastic memory structure and is in a parallelogram shell shape and sleeved on the periphery of the connecting rod 1. The anchoring structure 2 is adjustable relative to the connecting rod 1 along the extension direction of the connecting rod 1.
In other embodiments, the anchoring structure 2 may also be trapezoidal shell-like or other irregular shapes.
Two sides of the connecting rod 1, which are close to one end of the diaphragm structure 3, are provided with two fixing parts 10, and the fixing parts 10 are protruding blocks protruding from the outer circumferential surface of the connecting rod 1. Two fixing holes 11 are formed in the anchoring structure 2, and the positions, shapes and sizes of the two fixing holes 11 are respectively corresponding to the two fixing portions 10 and are used for being matched with the two fixing portions 10.
In the actual use process, the anchoring structure 2 is pushed to the direction close to the outer wall of the blood vessel through the catheter, when the anchoring structure 2 is pushed to the position of the fixing part 10, the fixing part 10 is embedded into the fixing hole 11 and forms an embedded relation with the fixing hole 11, so that the anchoring structure 2 is fixed relative to the connecting rod 1 through the matching of the fixing hole 11 and the fixing part 10, after the catheter is retracted, the anchoring structure 2 is restored to be elastically spread in the outer wall of the blood vessel, the outer wall of the blood vessel is clamped by the matching framework 32, and the diaphragm 31 is anchored on the inner wall of the blood vessel. The implantation of the entire occlusion device can also be accomplished by only involving several steps, such as the introduction and release of the membrane 31, the push and release of the anchoring structure 2, etc., which are greatly simplified in operation compared to the vascular occlusion devices of the prior art, thereby greatly shortening the learning curve.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment focuses on differences from other embodiments.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. The plugging device of the vascular closer is characterized by comprising a connecting rod (1), an anchoring structure (2) and a diaphragm structure (3);
the connecting rod (1) is configured to: following the sheath through the puncture lumen and furthest into the vessel interior;
the diaphragm structure (3) is located at the most distal end of the connecting rod (1), the diaphragm structure (3) is an elastic memory structure, and the diaphragm structure (3) is configured to: the most distal end of the connecting rod (1) and the catheter enter the blood vessel through folding and contracting in the interior of the catheter, and are released and unfolded after the catheter is retracted so as to be attached to the inner wall of the blood vessel;
the anchoring structure (2) is arranged on the connecting rod (1) and is adjustable relative to the connecting rod (1), and the anchoring structure (2) is configured to: pushing the catheter towards the outer wall of the blood vessel, and anchoring the catheter on the outer wall of the blood vessel after retracting the catheter;
the connecting rod (1) is also provided with a wire guide hole (9), and the wire guide hole (9) is used for a guide wire to pass through and enter the inside of a blood vessel.
2. The plugging device of the vascular closer according to claim 1, wherein an inner hole (4) is formed in the connecting rod (1), the anchoring structure (2) is arranged on the connecting rod (1) in a penetrating manner through the inner hole (4), and the anchoring structure (2) is adjustable in multiple stages relative to the connecting rod (1) along the axial direction of the inner hole (4).
3. The occlusion device of vascular occluder according to claim 2, wherein the walls of the inner bore (4) are provided with a plurality of latches (5) in a direction parallel to the axis, the anchoring structure (2) is provided with a clamping groove (6) matched with the clamping teeth (5), and the anchoring structure (2) realizes multistage adjustability of the relative connecting rod (1) through cooperation between the clamping groove (6) and the clamping teeth (5).
4. The plugging device of the vascular closer according to claim 1, wherein one end of the connecting rod (1) far away from the membrane structure (3) is further provided with a release structure (7) for connecting a bracket, and the release structure (7) and the connecting rod (1) are clamped by a plurality of elastic sheets (8);
the release structure (7), the connecting rod (1) and the plurality of spring plates (8) are configured as follows: the elastic pieces (8) release the clamping of the release structure (7) after the sheath tube is retracted, so that the release structure (7) is released relative to the connecting rod (1) and is retracted;
the guide wire hole (9) is further formed in the release structure (7), and the guide wire hole (9) in the release structure (7) is aligned with the guide wire hole (9) in the connecting rod (1) so as to enable the guide wire to penetrate.
5. The occlusion device of a vessel closer according to claim 1, wherein the anchoring structure (2) is sleeved on the periphery of the connecting rod (1), and the anchoring structure (2) is an elastic memory structure, a fixing part (10) for fixing the anchoring structure (2) is further arranged on the connecting rod (1), and the anchoring structure (2) is configured to: the catheter is pushed to approach the outer wall of the blood vessel, reaches the fixing part (10), is fixed relative to the connecting rod (1), and is anchored on the outer wall of the blood vessel when the catheter is retracted.
6. The occlusion device of a vessel occlusive device according to claim 5, wherein the anchoring structure (2) is provided with fixation holes (11) cooperating with the fixation parts (10);
when the anchoring structure (2) is pushed to the position of the fixing part (10) by the catheter, the fixing part (10) passes through the fixing hole (11) and forms an embedded relationship with the fixing hole (11), so that the anchoring structure (2) is fixed relative to the connecting rod (1).
7. The occlusion device of vascular occluder according to any of claims 1-6, wherein said membrane structure (3) comprises a membrane (31) and a skeleton (32), both said membrane (31) and said skeleton (32) being made of a degradable polymeric material;
when the membrane (31) is attached to the inner wall of a blood vessel, the framework (32) is matched with the anchoring structure (2) to anchor the membrane (31).
8. The occlusion device of a vessel occluder according to any of the claims 1-6, wherein a split structure is provided between the membrane structure (3) and the connecting rod (1).
9. The occlusion device of a vascular occluder according to any of the claims 1-6, wherein the angle between the membrane structure (3) and the connecting rod (1) is 30 to 45 degrees.
10. The occlusion device of vessel occlusive device of any of claims 1-6, wherein the membrane structure (3), the connecting rod (1) and the anchoring structure (2) are all made of degradable polymeric materials.
CN202310409578.1A 2023-04-17 2023-04-17 Plugging device of vascular closer Pending CN116439770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310409578.1A CN116439770A (en) 2023-04-17 2023-04-17 Plugging device of vascular closer

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