WO2022143895A1 - Dispositif d'obturation intracavitaire - Google Patents

Dispositif d'obturation intracavitaire Download PDF

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Publication number
WO2022143895A1
WO2022143895A1 PCT/CN2021/143068 CN2021143068W WO2022143895A1 WO 2022143895 A1 WO2022143895 A1 WO 2022143895A1 CN 2021143068 W CN2021143068 W CN 2021143068W WO 2022143895 A1 WO2022143895 A1 WO 2022143895A1
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WO
WIPO (PCT)
Prior art keywords
connecting rod
developing
blocking device
mark
blocking
Prior art date
Application number
PCT/CN2021/143068
Other languages
English (en)
Chinese (zh)
Inventor
李安伟
王永胜
Original Assignee
杭州唯强医疗科技有限公司
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
Priority claimed from CN202023333739.4U external-priority patent/CN214907538U/zh
Priority claimed from CN202011612723.9A external-priority patent/CN112842434B/zh
Application filed by 杭州唯强医疗科技有限公司 filed Critical 杭州唯强医疗科技有限公司
Publication of WO2022143895A1 publication Critical patent/WO2022143895A1/fr

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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

Definitions

  • the invention relates to the technical field of medical devices, in particular to an intracavity blocking device.
  • Interventional therapy is an emerging treatment method between surgery and medical treatment, including endovascular interventional and non-vascular interventional therapy.
  • interventional therapy is to make tiny channels with a diameter of several millimeters in blood vessels and skin without surgery to expose the lesions, or through the original pipeline of the human body, guided by imaging equipment (angiography machine, fluoroscopy machine, etc.)
  • imaging equipment angiography machine, fluoroscopy machine, etc.
  • Interventional therapy has the advantages of less trauma, simplicity, safety, effectiveness, fewer complications and significantly shorter hospital stay.
  • the occlusion device can be used to close defect openings, or tissue breaches, lumen, and organ passages in humans and/or animals.
  • the device for interventional therapy enters the human body through the delivery catheter by means of percutaneous puncture, its position can only be observed under radiation conditions. At this time, the visualization is very important for the device that requires the direction of use.
  • the material development of the device itself is not enough to clearly identify the direction, and it is necessary to fix a suitable and reasonably positioned developing point to identify the direction.
  • the current fixing method of the developing point causes the developing point to move, resulting in inaccuracy of the identification direction.
  • the purpose of the present invention is to provide an intracavity blocking device to solve the problem of inaccurate identification direction in the prior art.
  • a cavity blocking device comprising:
  • the blocking body is a hollow tubular structure and can be contracted or expanded in the radial direction; the blocking body is interconnected by a plurality of connecting rods to form a net shape, and the plurality of connecting rods include a first connecting rod that is connected to each other. and a second connecting rod, the first connecting rod and the second connecting rod are connected to the connecting node at an angle;
  • a developing mark which is formed by winding a filamentary material with developing performance around the connecting rod; the developing mark has at least one fixed end and at least one extending end, and the fixed end is located at a connection of the blocking body The extension end is located on the connecting rod and is far away from the fixed end.
  • the intracavity blocking device fixes the developing mark at the intersection of the blocking body and connects with the first metal wire and the second metal wire at the intersection at the same time, so that the position of the developing mark on the blocking body is relatively stable If it does not move, the inaccurate position of the developing mark caused by the movement of the developing mark is avoided, thereby improving the accuracy of the cavity blocking device in distinguishing the directionality.
  • FIG. 1 is a schematic structural diagram of the first embodiment of the cavity blocking device of the present invention.
  • FIG. 2 is a first directional view of the intraluminal occlusion device of FIG. 1 .
  • FIG. 3 is a second directional view of the intraluminal occlusion device of FIG. 1 .
  • FIG. 3 a is a top view of the intraluminal occlusion device of FIG. 1 .
  • Figure 3b is a top view of a variation of the intraluminal occlusion device shown in Figure 3a.
  • FIG. 4 is a partial structural schematic diagram of the first embodiment of the intracavity blocking device.
  • FIG. 5 is a partial structural schematic diagram of the first embodiment of the intracavity blocking device.
  • FIG. 6 is a partial structural schematic diagram of the first embodiment of the intracavity blocking device.
  • FIG. 7 is a partial structural schematic diagram of the first embodiment of the intracavity blocking device.
  • FIG. 8 is a partial structural schematic diagram of the second embodiment of the intracavity blocking device.
  • FIG. 9 is a partial structural schematic diagram of the third embodiment of the intracavity blocking device.
  • FIG. 10 is a schematic structural diagram of the fourth embodiment of the cavity blocking device of the present invention.
  • FIG. 11 is a first directional view of the intraluminal occlusion device of FIG. 10 .
  • FIG. 12 is a second directional view of the intraluminal occlusion device of FIG. 10 .
  • Fig. 13 is a partial structural schematic diagram of the fourth embodiment of the intracavity blocking device.
  • FIG. 14 is a schematic structural diagram of the fifth embodiment of the intracavity blocking device of the present invention.
  • FIG. 15 is a first directional view of the intraluminal occlusion device of FIG. 14 .
  • FIG. 16 is a second directional view of the intraluminal occlusion device of FIG. 14 .
  • Fig. 17 is a partial structural schematic diagram of the fifth embodiment of the intracavity blocking device.
  • FIG. 18 is a schematic structural diagram of the sixth embodiment of the cavity blocking device of the present invention.
  • FIG. 19 is a first directional view of the intraluminal occlusion device of FIG. 18 .
  • FIG. 20 is a second directional view of the intraluminal occlusion device of FIG. 18 .
  • FIG. 21 is a schematic structural diagram of the seventh embodiment of the cavity blocking device of the present invention.
  • FIG. 22 is a schematic diagram of the deformation structure of the seventh embodiment of the cavity blocking device of the present invention.
  • the operator of the endoluminal occlusion device is used as a reference, the end close to the operator is the proximal end, and the opposite end is the distal end.
  • the invention provides an intracavity blocking device, comprising a blocking body and a developing mark.
  • the blocking body is a hollow tubular structure and can be contracted or expanded in the radial direction.
  • the blocking body is interconnected by a plurality of connecting rods to form a mesh, the plurality of connecting rods include a first connecting rod and a second connecting rod that are connected to each other, and the first connecting rod and the second connecting rod are angled connected to the connection node.
  • the developing mark is formed by winding a filamentary material with developing performance around the connecting rod; the developing mark has at least one fixed end and at least one extending end, and the fixed end is located at a connecting node of the blocking body and is connected to both the first connecting rod and the second connecting rod located at the connecting node, and the extending end is located on the connecting rod and is away from the fixed end.
  • the intraluminal occlusion device provided by the present invention can be used for minimally invasive interventional therapy.
  • the developing mark of the cavity blocking device has good fixity, is not easy to slide, and improves the accuracy of identifying the direction.
  • the blocking body can be cut from a pipe body, or can be interlaced with metal wires.
  • the blocking body is woven from wire.
  • the following will take a plug body made of interlaced metal wires as an example for detailed description. It can be understood that the following embodiments are also applicable to the blocking body cut from the pipe body.
  • the cavity blocking device 1 includes a blocking body 11 and a developing mark.
  • the blocking body 11 is a hollow tubular structure inside, and can be contracted or expanded in the radial direction. Specifically, the blocking body 11 is interlaced with metal wires to form a mesh.
  • the overall structural shape of the blocking body 11 in this embodiment may be substantially the same as the shape of the existing blocking body 11 .
  • the blocking body 11 in this embodiment is woven with metal wires to form a mesh, that is, the above-mentioned connecting rods are in the form of metal wires.
  • the metal wire is divided into a first metal wire 111 and a second metal wire 112, and the first metal wire 111 and the second metal wire 112 are the above-mentioned first connecting rod and second connecting rod.
  • the point where the first metal wire 111 and the second metal wire 112 cross each other is the intersection point 113 (ie, the connection node).
  • the blocking body 11 may be woven with multiple metal wires, and the metal wires at the intersections may belong to the same metal wire or may belong to different metal wires. It can be understood that, in this embodiment, the metal wire at the intersection 113 is divided into the first metal wire 111 and the second metal wire 112 , which is mainly divided by the formation of the intersection 113 , and does not represent the difference between the two metal wires. actual attribution.
  • the blocking body 11 is in a non-rotationally symmetrical shape in the circumferential direction. This can be formed by, for example, the asymmetry of the weaving density, the asymmetry of the weave cross-sectional shape, or the asymmetry of the weave surface shape, etc., during the process of weaving the metal wire to form the plugging body 11 .
  • the asymmetry of the weaving density that is, the density of the mesh holes in the circumferential direction is not uniformly distributed, causes the sealing body 11 to be asymmetrical in the circumferential direction.
  • the shape of the braided cross-section is asymmetrical, that is, the cross-section of the network pipe is not circular, so the blocking body 11 is asymmetrical in the circumferential direction.
  • the asymmetry of the woven surface shape that is, the side surface of the network tube is formed into various shapes such as plane, arc or wave shape by heat setting, and the shape is asymmetric in the circumferential direction, resulting in the sealing body 11 being asymmetric in the circumferential direction. Regardless of the cause of the asymmetry of the blocking body 11 , the blocking body 11 will have directionality.
  • the non-rotational symmetry of the sealing body 11 can be structurally including at least two arc surfaces with different curvature radii in the circumferential direction (refer to FIG. 3 a ); 3b).
  • the blocking body 11 includes a first arc surface 116 and a second arc surface 117 along the circumferential direction.
  • the first arc surface 116 and the second arc surface 117 are connected to form a non-rotationally symmetrical structure, so that the blocking body 11 has directionality in the circumferential direction.
  • L1 in FIG. 1 as the dividing line, one side is the first arc surface 116 and the other side is the second arc surface 117 .
  • the radius of curvature of the first arc surface 116 is greater than the radius of curvature of the second arc surface 117 .
  • the blocking body in this embodiment has a symmetrical structure with respect to the boundary line L2.
  • the blocking body 11 may further include three arc surfaces, four arc surfaces or other numbers of arc surfaces along the circumferential direction, wherein the multiple arc surfaces have at least two radii of curvature.
  • the circumference of the first arc surface 116 is smaller than the circumference of the second arc surface 117 .
  • the long axis of the plugging body 11 is defined as the longest distance between two points on the periphery of the plugging body 11 on the section with the largest dimension that is perpendicular to the axial direction; the short axis is the vertical axis of the long axis The distance between the two points where the line meets the perimeter.
  • both ends of the long axis of the blocking body 11 are located on the first arc surface 116 .
  • the long axis corresponds to the length of the connecting line between the two circumferential ends of the first arc surface, that is, L1 and the peripheral edge
  • the intersection of that is, the connection between point A and point B.
  • the short axis is the intersection of the vertical line of the long axis and the periphery, that is, the intersection of L2 and the periphery, that is, the line between points C and D.
  • point C is the circumferential midpoint of the first arc surface 116
  • point D is the circumferential midpoint of the second arc surface 117 .
  • the blocking body 11 Due to the asymmetry of the blocking body 11 and the structure of the first arc surface 116 and the second arc surface 117 , the blocking body 11 has directionality in the circumferential direction, so that the cavity blocking device 1 is released when it is released. The release must be carried out in a certain direction, for example, the first arc surface 116 must be directed to the left.
  • the developing mark is fixed on the above-mentioned blocking body 11 to facilitate the operator to judge whether the shape of the intracavitary blocking device 1 in the human body is correct and whether the intracavitary blocking device 1 is accurately placed at the target position under radiation conditions.
  • the visualization mark can be set at the proximal end of the blocking body 11 , or at the proximal end and the distal end at the same time, and can be set according to actual conditions.
  • the development mark is set at the proximal end of the blocking body 11 as an example for description.
  • the number of developing marks is three, namely two end developing marks 121 and one middle developing mark 122 , which are arranged on the sealing body 11 in the circumferential direction and have a key that can identify the circumferential direction of the sealing body 11 . position to distinguish the direction of the intraluminal occlusion device 1 .
  • the number of developing marks may also be two, four or other numbers. Specifically, 2 to 6 developing marks are set on the intra-cavity blocking device 1, and the specific number is set according to the actual situation.
  • the development marks 121 at both ends are located at or near the interface between the outer peripheral surface and the proximal end surface of the blocking body 11 , and the development marks 121 at both ends are arranged at intervals in the circumferential direction. Specifically, the development marks 121 at both ends are located on the first arc surface 116 , and are divided into two ends adjacent to the long axis of the blocking body 11 . Therefore, the long axis of the intraluminal occlusion device 1 is marked with the development marks 121 at both ends.
  • the middle developing mark 122 is located in the axial middle part of the sealing body 11 and in the circumferential middle part of the first arc surface 116 .
  • the axial middle portion of the blocking body 11 does not specifically refer to the central position of the blocking body 11 in the axial direction, but refers to a certain length range including the axial central position of the blocking body 11 , excluding the ends of the axial ends of the blocking body 11 .
  • the central portion of the first arc surface 116 in the circumferential direction does not specifically refer to the exact center position of the first arc surface 116 in the axial direction, but refers to a certain length range including the exact center position of the first arc surface 116 in the circumferential direction. , excluding the ends of both ends of the first arc surface 116 in the circumferential direction.
  • the central developing mark 122 is located at the exact center position in the axial direction of the blocking body 11 , and is also located at the center position in the circumferential direction of the first arc surface 116 .
  • the developing marks 121 at both ends are located on the first arc surface 116 and mark the long axis of the blocking body 11 . Therefore, through the developing marks 121 on both ends, it can be identified that the blocking body 11 is located on the human body 11 .
  • the direction of the first arc surface 116 that is, the directionality of the circumferential direction of the blocking body 11 can be identified. Therefore, after the endoluminal occlusion device 1 enters the target blood vessel under radiation conditions, the three imaging markers mentioned above can be seen through the sheath to be received in the sheath.
  • the relative positions of the development marks 121 at both ends determine the release direction of the intracavity blocking device 1 .
  • the central developing mark 122 With the release of the intraluminal occlusion device 1 , the central developing mark 122 can be seen. Combined with the relative positions of the three development marks, it is determined whether the releasing intraluminal occlusion device 1 has wrong release patterns such as concave and twisted.
  • the blocking body 11 comprises two identical segments 116, 117 which are connected to each other.
  • a smooth transition is formed at the connection of the two arc surfaces 116 and 117 .
  • the central angles corresponding to the two arc surfaces 116 and 117 are both smaller than 180 degrees. Therefore, the curvature center line O1 of the arc surface 116 and the curvature center line O2 of the arc surface 117 do not overlap.
  • the plugging body 11 of this structure also has a certain directionality in the circumferential direction. Therefore, the above-mentioned end developing marks are respectively arranged on both ends of one arc surface, and a middle developing mark can also be arranged at the circumferential center of the other arc surface, which can advantageously identify the orientation of the blocking body 11 .
  • the arrangement of the developing marks in this embodiment is particularly advantageous for the sealing body 11 that is asymmetric in the circumferential direction, but in other embodiments, the sealing body 11 that is symmetrical in the circumferential direction, such as a circular sealing body 11
  • the sealing body 11 that is symmetrical in the circumferential direction such as a circular sealing body 11
  • Developable markers of various embodiments of the present invention may also be used.
  • the development marks on the blocking body 11 can be arbitrarily set.
  • two end developing marks 121 may be provided at or near the junction of the outer peripheral surface and the end surface of the blocking body 11 at intervals, and the two end developing marks 121 are arranged at both ends of the diameter of the circle.
  • the developing mark is formed by winding a filamentary material with developing performance around a metal wire. And the development mark is wrapped around the intersection 113 and is connected with the first metal wire 111 and the second metal wire 112 at the intersection 113, so that the position of the development mark on the metal wire on the blocking body 11 is not easily moved, thereby making it difficult to move.
  • the position of the developing mark is stable, so that the blocking device has a high accuracy of identifying the direction when it is in use.
  • the structures of the developing marks 121 at both ends and the developing marks 122 at the middle are the same.
  • the structure of the developed mark 121 at one end will be described as an example.
  • the end developing mark 121 has a fixed end 1211 and an extended end 1212 .
  • the end developing mark 121 When the end developing mark 121 is wound around the wire, it is located at the intersection 113 and is connected with both the first wire 111 and the second wire 112 at the intersection 113 , thereby forming the fixed end 1211 .
  • the end developing mark 121 is wound on the metal wire and the other end opposite to the fixed end 1211 is the extension end 1212 .
  • the middle part of the wire material is wound around the intersection point 113 , and two sections from the middle part to the end part are wound around the wire, and the end point is the extension end 1212 .
  • the end developing mark 121 is simultaneously connected to the first metal wire 111 and the second metal wire 112 at the intersection 113 by means of a cross winding.
  • the number of the extension ends 1212 is one, and they are located on one of the metal wires and are far away from the corresponding fixed end 1211 , so that the end developing marks 121 are linear.
  • the extension end 1212 may be located on the first wire 111 or on the second wire 112 .
  • the distance from the extension end 1212 to the fixed end 1211 is 1-50 mm. That is, the length of the end developing mark 121 covering the wire is 1 to 50 mm.
  • the specific length can be set according to the actual situation.
  • the extension end 1212 is provided with a clamping sleeve 1213 .
  • the clamping sleeve 1213 has a cylindrical shape as a whole, and is sleeved on the outer periphery of the end developing mark 121 and the corresponding metal wire to clamp the extension end 1212 on the metal wire, thereby preventing the end developing mark 121 from sliding on the metal wire.
  • the clamping sleeve 1213 is also disposed on the outer periphery of the developing mark, and sleeves the sharp end surface that may exist at the end of the extension end 1212 to avoid injury to the human body when the cavity blocking device 1 enters the human body.
  • the outer periphery of the end developing mark 121 is covered with a heat shrinkable film 1214 .
  • the heat shrinkable film 1214 not only stabilizes the developing mark on the wire, but also protects the end of the extension end 1212 There may be sharp end faces, so as to avoid injury to the human body when the intracavity blocking device 1 enters the human body.
  • the metal wire and the end developing mark 121 are fixed by a polymer suture 1215, which further ensures the stability of the end developing mark 121 without sliding.
  • one end of the polymer suture 1215 is intertwined with the end developing mark 121 , and the other end extends to the intersection 113 while being intertwined with the first metal wire 111 and the second metal wire 112 and knotted for fixation.
  • the material of the end developing mark 121 is tantalum wire, platinum wire, gold wire or other radiopaque materials and alloy materials thereof.
  • the extension direction of the developing marks 121 at both ends on the blocking body 11 is inclined relative to the axial direction of the blocking body 11 , and the inclination direction can be in the same direction or in different directions, which can be set according to the actual situation.
  • the developing mark in this embodiment is fixed at the intersection 113 of the blocking body 11 , so that the position of the developing mark on the blocking body 11 is relatively stable, and the movement of the developing mark causes the inaccurate position of the developing mark to be avoided. phenomenon, thereby improving the accuracy of the intracavity occlusion device 1 in distinguishing the directionality.
  • the cavity blocking device of this embodiment differs from the first embodiment in that the developing mark 22 includes a fixed end 2211 and two extending ends 2212 .
  • the fixed end 2211 is also located at the intersection 213, and the two extending ends 2212 are extended in the same direction, so that the developing mark 22 is linear. That is, one of the extending ends 2212 is located on the first metal wire 211 , the other extending end 2212 is also located on the first metal wire 211 , and the two extending ends 2212 are arranged on both sides of the fixed end 2211 . In other embodiments, both the extending ends 2212 may be located on the second metal wire 212 .
  • Both the end developing marks and the middle developing marks adopt the above structures.
  • the developing mark 32 of the cavity blocking device in this embodiment also includes a fixed end 3211 and an extension end 3212 .
  • the fixed end 3211 is still disposed at one of the intersections 313 .
  • the difference between this embodiment and the first embodiment is that the extension end 3212 extends from the fixed end 3211 to another intersection 313 along the extension direction of one of the wires, and cross-winding is performed at the intersection 313, which is different from the first The wire 311 and the second wire 312 are connected at the same time.
  • the intersection 313 where the fixed end 3211 is located is adjacent to the intersection 313 where the extending end 3212 is located.
  • Both the end developing marks and the middle developing marks adopt the above structures.
  • the cavity blocking device 4 includes two end developing marks 421 and a middle developing mark 422, Wherein, both end developing marks 421 have two extending ends.
  • each end developing mark 421 includes two extending ends, and the two extending ends are located on the first wire 411 and the second wire 412 respectively, so that the end developing mark 421 has a ⁇ shape, the ⁇ shape
  • the structure has an opening.
  • the extending end on the first metal wire 411 is the first extending end 4212
  • the extending end on the second metal wire 412 is the second extending end 4213 .
  • the distance from the first extension end 4212 to the fixed end 4211 is the same as the distance from the second extension end 4213 to the fixed end 4211 .
  • the distance from the first extension end 4212 to the fixed end 4211 and the distance from the second extension end 4213 to the fixed end 4211 may also be different, which may be set according to actual conditions.
  • the winding method of the end developing mark 421 in the present embodiment is as follows: the filamentary material is placed at the first extension end 4212 , and spirally and tightly wound along the first metal wire 411 until it is wound to a cross of the blocking body 41 . At point 413, the wire is cross wound at this intersection 413, so that the filamentary material is fixed at the intersection 413. Then, the direction is changed so that the filamentous material is helically densely wound on the second metal wire 412 along the direction of the second metal wire 412 , so as to form the end developing mark 421 .
  • the processing methods of the first extension end 4212 and the second extension end 4213 may refer to the first embodiment.
  • the developing marks 421 at both ends are arranged symmetrically with the center in the circumferential direction of the first arc surface, that is, with the center in the circumferential direction of the first arc surface as a reference, the developing marks 421 at both ends are arranged in the form of > and ⁇ On both sides of the center, ie, both end portions, the development marks are arranged so that the opening directions thereof are opposite.
  • the developing marks at both ends may also be oriented in different directions, for example, both are in the form of ⁇ , that is, the openings are oriented in the same direction; or the developing marks at both ends may also be arranged with their openings facing each other.
  • the cavity blocking device 5 includes two end developing marks 521 and a middle developing mark 522, Wherein, both end developing marks 521 have four extending ends.
  • each end developing mark 521 includes four extending ends, which are a first extending end 5212 , a second extending end 5213 , a third extending end 5214 and a fourth extending end 5215 .
  • the first extension end 5212 and the second extension end 5213 are located on the first wire 511 and are arranged on both sides of the fixed end 5211, and the second extension end 5213 and the fourth extension end 5215 are located on the second wire 512 and They are arranged on both sides of the fixed end 5211, so that the end developing marks 521 are X-shaped.
  • the distances from each extension end to the fixed end 5211 are equal. In other embodiments, the distance from each extension end to the fixed end 5211 can also be set according to actual conditions.
  • the winding method of the end developing mark 521 in this embodiment is as follows: a wire-like material is placed at the first extension end 5212 , and spirally and tightly wound along the first metal wire 511 until it is wound to a cross of the blocking body 51 . At point 513, the wire is cross wound at this intersection 513, so that the filamentary material is fixed at the intersection 513. The direction is then changed so that the filamentary material is helically densely wound on the second wire 512 in the direction of the second wire 512 . Take another filamentous material and use the same winding method as above, and perform cross winding at the same intersection 513 to wind it into an X shape.
  • the processing methods of the first extension end 5212 and the second extension end 5213 may refer to the first embodiment.
  • the structure of the middle developing mark 522 in this embodiment is the same as that of the middle developing mark 522 in the first embodiment.
  • the middle portion developing mark 522 may also adopt the structure of the end portion developing mark in the second embodiment, the third embodiment, the fourth embodiment and the present embodiment.
  • the cavity blocking device 6 in this embodiment includes three end developing marks and one The middle develops the mark 622.
  • the end developing marks and the middle developing marks 622 located at both ends of the long axis are set in the same manner as in the fifth embodiment, and will not be repeated here.
  • the two end developing marks located at or near the long axis are defined as the first end developing marks 621 , and the other end developing marks are defined as the second end developing marks 623 .
  • the second end developing mark 623 is disposed at the junction of the outer circumference of the blocking body 61 and the proximal end surface or at a position near it, and is specifically located in the middle part of the second arc surface in the circumferential direction. In this embodiment, the second end developing mark 623 is located at the center of the second arc surface in the circumferential direction. Therefore, the midpoint of the connecting line of the two first end developing marks 621 and the connecting line of the second end developing marking 623 can roughly mark the short axis direction of the blocking body 61 .
  • the second end developing mark 623 may be linear, and has the same structure as the middle developing mark 622 , and reference may be made to the description of the middle developing mark 622 .
  • the above-mentioned four imaging markers can be seen through the sheath and are received in the sheath.
  • the relative positions of the three end development marks determine the release direction of the intracavity blocking device 6 .
  • the middle developing mark 622 can be observed, and combined with the relative positions of the four development marks, it is determined whether the releasing intraluminal occlusion device 6 has wrong release patterns such as concave and twisted.
  • the difference between the cavity blocking device of this embodiment and the first embodiment is that the cavity blocking device in this embodiment further includes a recovery structure 72 .
  • the recovery structure 72 By setting the recovery structure 72, the method of directly puncturing the human epidermis by open surgery for recovery is replaced, which is convenient, fast, safe and reliable, and causes less damage to the patient.
  • a plug head 711 protrudes from the proximal end of the blocking body 71 .
  • the plug head 711 in this embodiment is formed by a closed head that blocks the end of the main body 71 .
  • a connecting hole 7111 with an internal thread is provided in the middle of the bolt head 711 .
  • the recovery structure 72 includes a cable 721 and a recovery head 722 provided at the head end of the cable 721.
  • the recovery head 722 and the bolt head 711 are detachably connected, and the blocking body 71 is pulled to move axially by the movement of the cable 721 along the proximal end.
  • the recovery of the blocking body 71 is realized.
  • the recovery head 722 and the bolt head 711 are connected by screw threads, which is convenient and reliable.
  • the occlusion body 71 When the occlusion device needs to be used, the occlusion body 71 is retracted into a delivery sheath (not shown).
  • the blocking body 71 is threadedly connected to a delivery wire cable (not shown) through a bolt head 711 , and the delivery wire cable together with the blocking body 71 is arranged in the delivery sheath.
  • the delivery wire moves axially to push the blocking body 71 out of the sheath, and rotates the delivery wire to disengage the plug head 711 to complete the release of the blocking body 71 .
  • the above-mentioned threaded connection structure is reliable and the release is controllable, but if it is found that the release position is wrong or other problems are found after the threaded connection is released, it is difficult to re-screw the conveying steel cable with the bolt head 711 again.
  • the cable head is screwed with the bolt head 711, once there is an angle deviation, the cable head will be ejected from the connection hole 7111, and recovery is difficult.
  • a positioning portion 73 for assisting recovery of the blocking body 71 is added to the plug head 711 . Due to the arrangement of the positioning portion 73 , the recovery head 722 can obtain an axial limit, which not only prevents it from popping open during connection, but also facilitates centering and improves the success rate of the recovery operation.
  • the positioning portion 73 protrudes in the axial direction, and is arranged in a ring shape around the connecting hole 7111 .
  • the positioning portion 73 is coaxial with the connecting hole 7111 , and the inner diameter of the positioning portion 73 is larger than the inner diameter of the connecting hole 7111 .
  • the recovery head 722 includes a recovery head body 7221 and a protrusion 7223 axially protruding from one end of the body.
  • the circumferential size of the recovery head 722 is adapted to the inner diameter of the positioning portion 73, and the outer diameter of the protrusion 7223 is adapted to the inner diameter of the connecting hole 7111.
  • the outer peripheral wall of the protrusion 7223 is also provided with the connecting hole 7111. Suitable external thread.
  • the positioning portion 73 is integrally formed on the end of the bolt head 711 , and the outer wall of the positioning portion 73 is flush with the outer wall of the main body of the bolt head 711 .
  • the overall structure has high strength and is not easy to be damaged.
  • the positioning portion 73 and the plug head 711 can also be connected to each other after being formed separately.
  • the positioning portion 73 is a hollow cylindrical structure made of polymer material, which has good hardness and light weight.
  • the positioning portion 73 is sleeved and fixed on the outer circumference of the plug head 711 by sewing or heat fusion. One end of the positioning portion 73 away from the blocking body 71 is opened for the recovery head 722 to enter.
  • the recovery head body 7221 In the process of screw connection, firstly align the recovery head 722 into the interior of the positioning portion 73; as the cable 721 is pushed forward in the axial direction, the recovery head body 7221 is limited by the positioning portion 73 and positioned along the positioning portion 73. axial movement of the portion 73 . Since the positioning portion 73 and the connection hole 7111 are coaxial, the protrusion 7223 at the head end of the recovery head body 7221 is easy to be centered with the connection hole 7111; after the protrusion 7223 is inserted into the connection hole 7111, the cable 721 is rotated to make the recovery head 722 as a whole.
  • the protrusions 7223 are made of magnetic material.
  • the plug head 711 is made of ferromagnetic metal, after the recovery structure 72 enters the human body with the delivery sheath, the protrusion 7223 is guided to the plug head 711 under the action of the magnetic field, so that the protrusion 7223
  • the connection hole 7111 of the bolt head 711 is easy to be centered, and the precision and efficiency of the screw connection are improved.
  • connection between the recovery head 722 and the plug head 711 may also be a snap connection.
  • the snap connection can be as follows: the end of the snap connection plug 711 is provided with a protruding snap protrusion in the circumferential direction. The end of the recovery head 722 is provided with a hook, and the hook is engaged with the hook, so that the recovery head 722 and the bolt head 711 can be engaged with each other.
  • the above-mentioned snap connection can replace the threaded connection, and the disassembly and assembly are more convenient, the structure of each component is simple, and the cost is low.
  • the intracavity blocking device in this embodiment realizes the recovery of the blocking body 71 by setting the recovery structure 72, thereby replacing the method of directly puncturing the human epidermis by open surgery for recovery, which is convenient, fast, safe and reliable, and reduces the damage to the patient. smaller.
  • the recovery head 722 and the bolt head 711 in the recovery structure 72 are detachably connected, and can be separated and reconnected according to usage conditions, which is convenient and reliable, and improves operability.
  • the embodiments of the present invention at least have the following advantages and positive effects:
  • the developing mark is fixed at the intersection of the blocking body and connected with the first metal wire and the second metal wire at the intersection at the same time, so that the developing mark can be placed on the blocking body at the same time.
  • the position is relatively stable, which avoids the inaccuracy of the position of the developing mark caused by the movement of the developing mark, thereby improving the accuracy of the cavity blocking device in distinguishing the directionality.
  • the intracavity blocking device in some embodiments of the present invention can identify the circumferential directionality of the intracavitary blocking device when it is located in the human body by setting developing marks at different positions, so as to determine the release direction of the intracavitary blocking device, and Determining the release form of the intraluminal occlusion device in release improves accuracy.

Landscapes

  • 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)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

Dispositif d'obturation intracavitaire, comprenant un corps d'obturation et un repère de développement. Le corps d'obturation est une structure tubulaire creuse et peut être contracté ou expansé dans un sens radial. Le corps d'obturation présente une forme nette formée d'une pluralité de tiges de liaison reliées l'une à l'autre, la pluralité des tiges de liaison comprend une première tige de liaison et une seconde tige de liaison qui sont reliées l'une à l'autre, et la première tige de liaison et la seconde tige de liaison sont reliées à un nœud de liaison sous un certain angle. Le repère de développement est formé par enroulement d'un matériau filamentaire ayant une performance de développement autour des tiges de liaison ; et le repère de développement présente au moins une extrémité fixe et au moins une extrémité d'extension, l'extrémité fixe étant située au niveau d'un nœud de liaison du corps d'obturation, et étant reliée à la fois à la première tige de liaison et à la seconde tige de liaison qui sont situées au niveau du nœud de liaison, et l'extrémité d'extension est située sur une tige de liaison et à l'opposé de l'extrémité fixe.
PCT/CN2021/143068 2020-12-30 2021-12-30 Dispositif d'obturation intracavitaire WO2022143895A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202023333739.4U CN214907538U (zh) 2020-12-30 2020-12-30 腔内封堵装置
CN202023333739.4 2020-12-30
CN202011612723.9A CN112842434B (zh) 2020-12-30 2020-12-30 腔内封堵装置
CN202011612723.9 2020-12-30

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WO2022143895A1 true WO2022143895A1 (fr) 2022-07-07

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010021873A1 (en) * 1997-08-01 2001-09-13 Stinson Jonathan S. Bioabsorbable marker having radiopaque constituents and method of using same
CN102448380A (zh) * 2009-04-22 2012-05-09 湖区制造公司,商用名湖区医药 动脉瘤治疗系统、设备和方法
CN103356250A (zh) * 2013-07-22 2013-10-23 上海普实医疗器械科技有限公司 一种防脱落可回收的安全封堵器
CN109984863A (zh) * 2017-12-29 2019-07-09 先健科技(深圳)有限公司 双层血管支架
CN111956275A (zh) * 2020-09-14 2020-11-20 聚辉医疗科技(深圳)有限公司 封堵器
CN112842434A (zh) * 2020-12-30 2021-05-28 杭州唯强医疗科技有限公司 腔内封堵装置
CN214907538U (zh) * 2020-12-30 2021-11-30 杭州唯强医疗科技有限公司 腔内封堵装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010021873A1 (en) * 1997-08-01 2001-09-13 Stinson Jonathan S. Bioabsorbable marker having radiopaque constituents and method of using same
CN102448380A (zh) * 2009-04-22 2012-05-09 湖区制造公司,商用名湖区医药 动脉瘤治疗系统、设备和方法
CN103356250A (zh) * 2013-07-22 2013-10-23 上海普实医疗器械科技有限公司 一种防脱落可回收的安全封堵器
CN109984863A (zh) * 2017-12-29 2019-07-09 先健科技(深圳)有限公司 双层血管支架
CN111956275A (zh) * 2020-09-14 2020-11-20 聚辉医疗科技(深圳)有限公司 封堵器
CN112842434A (zh) * 2020-12-30 2021-05-28 杭州唯强医疗科技有限公司 腔内封堵装置
CN214907538U (zh) * 2020-12-30 2021-11-30 杭州唯强医疗科技有限公司 腔内封堵装置

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