Macromolecular anti-unwinding spring ring

Abstract

The utility model discloses a macromolecular anti-unwinding spring ring, which relates to the technical field of spring rings and comprises a connecting piece, a spring ring and a macromolecular anti-unwinding wire, a releasing groove is formed in the connecting piece and used for being connected with the pushing rod, and a connecting block is arranged at the end of the connecting piece; one end of the spring ring is connected with the connecting block; one end of the macromolecular anti-unwinding wire is connected with the connecting block, and the other end of the macromolecular anti-unwinding wire is connected with the round head end. According to the macromolecule anti-unwinding spring ring, the two ends of the spring ring are connected with the connecting piece and the round head end, the macromolecule anti-unwinding wire is arranged in the spring ring, and the two ends of the macromolecule anti-unwinding wire are connected with the connecting block on the connecting piece and the round head end respectively, so that it is guaranteed that the length of the spring ring is fixed; the embolism spring is prevented from being straightened under the action of external force in the implanting and using process, the function of the spring structure is kept, the embolism efficiency can be remarkably improved, safety and reliability are achieved, and meanwhile the safety of an interventional operation is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to spring ring technical field especially relates to a high molecule anti-unraveling spring ring. BACKGROUND

[0002] Angioma is the angioma like protrusion caused by blood vessel variation. For aneurysm, when the blood pressure in the blood vessel suddenly rises, the aneurysm rupture bleeding will cause the patient to be disabled or dead. With the development of imaging technology and endovascular material, endovascular interventional therapy has replaced surgical aneurysm clipping operation and become the preferred method for treating aneurysm due to low risk and small trauma. Aneurysm interventional embolization therapy is a commonly used method for treating aneurysm, generally inserting a microcatheter at the root of the patient's thigh, placing a spring ring into the aneurysm cavity by a push rod, and then releasing the push rod from the spring ring after embolization in the aneurysm cavity, reducing the blood flow in the aneurysm, so as to achieve the purpose of curing aneurysm. When treating aneurysm by spring ring plugging method, it is easy to cause plugging difficulty and need to repeatedly adjust the position of the microcatheter due to improper selection of spring ring specifications, etc., which leads to large tension when repeatedly recovering the spring ring, and is easy to cause the spring ring to unravel. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a kind of high molecule anti-unraveling spring ring, and specific technical solutions are as follows:

[0004] A kind of high molecule anti-unraveling spring ring, comprising:

[0005] Connecting piece, the connecting piece is equipped with release slot, the release slot is used to connect push rod, the connecting piece end is equipped with connecting block;

[0006] Spring ring, one end is connected with the connecting block, and the other end is equipped with a round head end;

[0007] High molecule anti-unraveling wire, set in the spring ring, one end is connected with the connecting block, and the other end is connected with the round head end.

[0008] Preferably, it further includes a plurality of fiber hairs wound along the length direction of the high molecule anti-unraveling wire, and the fiber hairs extend outward through the peripheral gap of the spring ring.

[0009] Preferably, the connecting block comprises:

[0010] Connecting block main body;

[0011] Center groove, set in the center of the end of the connecting block main body;

[0012] Positioning groove, annularly arranged on the peripheral side of the connecting block main body, and connected with the center groove, one end of the high molecule anti-unraveling wire passes through the center groove and is wound in the positioning groove;

[0013] A first adhesive part is arranged around the connection block body and the end of the spring ring.

[0014] Preferably, the connection block comprises:

[0015] A connection block body;

[0016] A central groove is arranged at the center of the end of the connection block body;

[0017] An injection hole is arranged on the connection block body and communicates with the outer side of the connection block body and the central groove;

[0018] A second adhesive part is arranged in the central groove and the injection hole, and one end of the high-molecular anti-unraveling wire is fixed in the central groove through the second adhesive part;

[0019] A first adhesive part is arranged around the connection block body and the end of the spring ring.

[0020] Preferably, the second adhesive part is formed after the glue in the injection hole is injected and solidified.

[0021] Preferably, the connection block comprises:

[0022] A connection block body;

[0023] A central groove is arranged at the center of the end of the connection block body and communicates with the outer side of the connection block body, and one end of the high-molecular anti-unraveling wire passes through the central groove and extends to the outer side of the connection block body to form a plug;

[0024] A first adhesive part is arranged around the connection block body and the end of the spring ring.

[0025] Preferably, the plug is formed by knotting, sintering or gluing one end of the high-molecular anti-unraveling wire.

[0026] Preferably:

[0027] The high-molecular anti-unraveling wire is located at the central axis position of the spring ring;

[0028] The diameter of the spring ring is 0.1-0.5mm, which is formed by winding a metal wire, and the diameter of the metal wire is 0.01-0.1mm;

[0029] The diameter of the high-molecular anti-unraveling wire is 0.01-0.1mm.

[0030] Preferably, the high-molecular anti-unraveling wire is made of nylon, polypropylene, polyester or wool material.

[0031] Preferably, the round head end is formed by sintering nylon, polypropylene or polyester material, or is formed after injection and solidification.

[0032] The high-molecular anti-unwinding spring ring provided by the utility model, through connecting the connecting piece and the round head end at both ends of the spring ring and setting the high-molecular anti-unwinding wire in the spring ring, the both ends are connected with the connecting block on the connecting piece and the round head end respectively, so that the length of the spring ring is fixed, the embolization spring is prevented from being straightened under external force during implantation and use, the function of the spring structure is maintained, the embolization efficiency is improved obviously, and the safety of the interventional operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to make the technical personnel of the art better understand the technical scheme of the utility model, the following will be described in detail in combination with the drawings, and the drawings in the following description are only some embodiments described in the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0034] Figure 1 The utility model provides the high-molecular anti-unwinding spring ring's cross section main view of the embodiment of the utility model;

[0035] Figure 2 The utility model provides the cross section main view of the connecting block of embodiment 1 of the embodiment of the utility model;

[0036] Figure 3 The utility model provides the cross section main view of the connecting block of embodiment 2 of the embodiment of the utility model;

[0037] Figure 4 The utility model provides the cross section main view of the connecting block of embodiment 3 of the embodiment of the utility model.

[0038] Reference signs

[0039] 1-connecting piece; 11-unwinding groove; 12-connecting block; 121-connecting block main body; 122-center groove; 123-positioning groove; 124-first adhesive part; 125-glue injection hole; 126-second adhesive part;

[0040] 2-spring ring; 21-round head end;

[0041] 3-anti-unwinding wire; 31-plug;

[0042] 4-fiber hair. DETAILED DESCRIPTION

[0043] In order to make the technical personnel of the art better understand the technical scheme of the utility model, the following will be described in detail in combination with the drawings, and the drawings in the following description are only some embodiments described in the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0044] It should be noted that like reference numerals refer to like elements throughout the several views of the drawings, and that, unless otherwise specifically indicated, where a singular form of a word is used herein, that word connotes both the singular and plural forms of the word.

[0045] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, indicate relative positions or orientations based on the positions or orientations shown in the drawings, or the positions or orientations in which the utility model product is usually placed during use, and are merely for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", and the like are merely used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0046] In addition, the terms "horizontal", "vertical", "overhanging", and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0047] In the description of the utility model, it should also be noted that, unless otherwise specifically defined and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0048] Please see Figures 1 to 4 The embodiment provides a high molecular anti-unwinding spring ring, which comprises a connecting piece 1, a spring ring 2 and a high molecular anti-unwinding wire 3.

[0049] The connecting piece 1 is provided with a release groove 11 for connecting a pushing rod, and the end of the connecting piece 1 is provided with a connecting block 12.

[0050] The spring ring 2 is connected to the connecting block 12 at one end and is provided with a round head end 21 at the other end.

[0051] The high molecular anti-unwinding wire 3 is arranged in the spring ring 2, is connected to the connecting block 12 at one end and is connected to the round head end 21 at the other end.

[0052] The proximal end of the spring ring 2 is fixedly connected with the distal end of the connecting piece 1. The main body of the spring ring 2 can be a platinum-tungsten alloy wire formed by winding, or a metal wire made of platinum, tungsten, gold, silver, tantalum, nickel-titanium alloy, cobalt-chromium alloy, platinum-iridium alloy, etc. The metal wire has a certain developing property under DSA (digital developing angiography). The wire diameter of the metal wire is between 0.01 mm and 0.1 mm. The diameter of the spring main body formed by winding is between 0.1 mm and 0.5 mm. The spring ring 2 is loaded with multiple fiber hairs 4 in the gap, which are used to improve the embolization efficiency. The fiber hairs 4 are wound on the central high-molecular anti-unwinding wire 3 and the two ends are located outside the spring ring 2.

[0053] The connecting piece 1 is used to connect the push rod part in the spring and spring ring 2 system. The connecting piece 1 is generally made of metal material. The proximal end of the connecting piece 1 has a groove or aperture structure, i.e. a release groove 11, which is used to release the spring ring 2 from the push rod. The distal end of the connecting piece 1 has a connecting block 12 which is generally located inside the spring ring 2 and connected with the proximal end of the spring ring 2. The connection can be achieved by means of glue bonding or welding. The connecting block 12 has a structure for auxiliary fixation and centering of the anti-unwinding high-molecular wire.

[0054] The high-molecular anti-unwinding wire 3 is used to connect the proximal end and the distal end of the spring ring 2, so that the spring ring 2 has a certain length and is not easy to be unwound under external force. The high-molecular anti-unwinding wire 3 is generally made of a high-molecular material with small elasticity, and has a diameter of 0.01 mm to 0.1 mm. The material can be nylon, polypropylene, polyester, wool, etc.

[0055] The round head end 21 is used to connect the high-molecular anti-unwinding wire 3 and the distal end of the spring ring 2. The round head end 21 has a smooth surface, which can prevent damage to the blood vessel wall. The round head end 21 can be made of the same material as the high-molecular anti-unwinding wire 3. After heat treatment and shaping of the tip, the round head end 21 with a circular arc shape is formed. The round arc end face can also be formed by using glue under the action of tension. Through the repeated process of glue injection and curing, the high-molecular anti-unwinding wire 3 and the distal end of the spring ring 2 are gradually fixed.

[0056] The high-molecular anti-unwinding spring ring provided by the embodiment is connected with the connecting piece 1 and the round head end 21 at both ends of the spring ring 2, and the high-molecular anti-unwinding wire 3 is arranged in the spring ring 2, with both ends connected with the connecting block 12 on the connecting piece 1 and the round head end 21 respectively. Therefore, the length of the spring ring 2 is fixed, so as to prevent the embolization spring from being straightened under external force during implantation and use, maintain the function of the spring structure, significantly improve the embolization efficiency, and be safer and more reliable, while improving the safety of the interventional operation.

[0057] Further, a plurality of fiber hairs 4 are wound along the length direction of the polymer anti-unraveling wire 3, and the fiber hairs 4 extend outward through the gap on the side of the spring ring 2. The fiber hairs 4 can reduce the friction between the spring ring 2 and the inner wall of the blood vessel, thereby facilitating the movement of the spring ring 2 in the blood vessel and improving the embolization efficiency.

[0058] Further, please refer to Figure 2 In the embodiment provided in Embodiment 1, the connecting block 12 includes a connecting block body 121, a center groove 122, a positioning groove 123, and a first adhesive part 124.

[0059] The center groove 122 is arranged at the center of the end of the connecting block body 121.

[0060] The positioning groove 123 is arranged around the outer circumferential side of the connecting block body 121, is communicated with the center groove 122, and the one end of the polymer anti-unraveling wire 3 passes through the center groove 122 and is wound in the positioning groove 123.

[0061] The first adhesive part 124 is arranged around between the connecting block body 121 and the end of the spring ring 2.

[0062] The surface of the connecting block body 121 has a groove or a thread structure, the groove or the thread structure is the positioning groove 123, the structure is not limited to a specific shape, the inside of the connecting block body 121 has the center groove 122 for accommodating the polymer anti-unraveling wire 3, the outer side surface of the connecting block body 121 and the center groove 122 are communicated with a guide groove, the proximal end of the polymer anti-unraveling wire 3 can be wound in the surface thread or groove of the connecting block body 121, and can also be knotted for auxiliary fixation, the polymer anti-unraveling wire 3 extends out from the center of the connecting block body 121 through the guide groove and the center groove 122, so that the polymer anti-unraveling wire 3 is located at the center of the spring ring 2, and deformation of the spring ring 2 caused by the polymer anti-unraveling wire 3 connecting the two ends of the spring ring 2 is prevented. The first adhesive part 124 is formed by injection molding and curing, and the connecting block body 121, the proximal end of the spring ring 2, and the polymer anti-unraveling wire 3 are fixedly connected by the adhesive bonding mode.

[0063] Further, please refer to Figure 3 In the embodiment provided in Embodiment 2, the connecting block 12 includes a connecting block body 121, a center groove 122, an injection hole 125, a second adhesive part 126, and a first adhesive part 124.

[0064] The center groove 122 is arranged at the center of the end of the connecting block body 121.

[0065] The injection hole 125 is arranged on the connecting block body 121 and is communicated between the outer side surface of the connecting block body 121 and the center groove 122.

[0066] The second adhesive part 126 is arranged in the center groove 122 and the glue injection hole 125, and one end of the high polymer anti-unraveling wire 3 is fixed in the center groove 122 through the second adhesive part 126.

[0067] The first adhesive part 124 is arranged between the connecting block body 121 and the end of the spring ring 2.

[0068] The connecting block body 121 has the center groove 122 for accommodating the high polymer anti-unraveling wire 3, and has the glue injection hole 125 for connecting the surface of the connecting block body 121 and the center groove 122.

[0069] Further, the second adhesive part 126 is formed by injecting glue into the glue injection hole 125 and solidifying the glue.

[0070] Further, please refer to Figure 4 In the example 3 provided by the embodiment, the connecting block 12 includes the connecting block body 121, the center groove 122 and the first adhesive part 124.

[0071] The center groove 122 is arranged at the center of the end of the connecting block body 121 and is connected to the outer side of the connecting block body 121, and one end of the high polymer anti-unraveling wire 3 extends to the outer side of the connecting block body 121 to form the plug 31.

[0072] The first adhesive part 124 is arranged between the connecting block body 121 and the end of the spring ring 2.

[0073] The connecting block body 121 has the center groove 122 for accommodating the high polymer anti-unraveling wire 3, the distal end of the center groove 122 is located at the distal end surface of the connecting block body 121, the proximal end of the center groove 122 is located at the surface of the connecting block body 121, the proximal end of the high polymer anti-unraveling wire 3 has a plug 31 at the proximal end of the center groove 122, the plug 31 can be formed by knotting, sintering or gluing of the high polymer anti-unraveling wire 3, to prevent the high polymer anti-unraveling wire 3 from falling off the connecting block body 121, and glue is injected into the gap between the spring ring 2 and the connecting piece 1 to connect the spring ring 2, the plug 31 of the high polymer anti-unraveling wire 3 and the connecting piece 1 into one body.

[0074] Further, the plug 31 is formed by knotting, sintering or gluing of one end of the high polymer anti-unraveling wire 3.

[0075] Further, the high polymer anti-unraveling wire 3 is located at the center axis position of the spring ring 2.

[0076] The high polymer anti-unraveling wire 3 is located at the center axis position of the spring ring 2.

[0077] The spring ring 2 has a diameter of 0.1-0.5mm and is formed by winding a wire with a diameter of 0.01-0.1mm.

[0078] The high-molecular anti-unraveling wire 3 has a diameter of 0.01-0.1mm.

[0079] Further, the high-molecular anti-unraveling wire 3 is made of nylon, polypropylene, polyester or wool.

[0080] Further, the round head end 21 is formed by sintering nylon, polypropylene or polyester or is formed after curing by injection.

[0081] Principle description:

[0082] The spring ring 2 is connected to the connecting piece 1 and the round head end 21 at both ends and the high-molecular anti-unraveling wire 3 is arranged in the spring ring 2 and connected to the connecting block 12 on the connecting piece 1 and the round head end 21 at both ends, so as to fix the length of the spring ring 2 and prevent the stent spring from being straightened under external force during implantation and use, thereby avoiding the spring ring 2 from unraveling.

[0083] It should be noted that the terms "comprising", "containing" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article or apparatus.

[0084] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above description of the examples is only used to help understand the method of the present application and its core idea. The above is only a preferred implementation mode of the present application, and it should be pointed out that due to the limited nature of the language expression, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principle of the present application, and the above technical features can also be combined in a proper way; these improvements, refinements, changes or combinations, or the direct application of the concept and technical solution of the present application to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A polymer anti-unwinding spring coil, characterized in that, include: A connector (1) is provided with a release groove (11) for connecting a push rod, and a connecting block (12) is provided at the end of the connector (1). A spring coil (2) is connected to the connecting block (12) at one end and has a rounded end (21) at the other end; A polymer anti-unwinding filament (3) is disposed inside the spring coil (2), with one end connected to the connecting block (12) and the other end connected to the round end (21).

2. The polymer anti-unwinding spring coil according to claim 1, characterized in that, It also includes multiple sets of fiber hairs (4) wound along the length direction of the polymer anti-unwinding filament (3), the fiber hairs (4) extending outward through the peripheral gap of the spring coil (2).

3. The polymer anti-unwinding spring coil according to claim 1, characterized in that, The connecting block (12) includes: Connecting block body (121); A central groove (122) is provided at the center of the end of the connecting block body (121); A positioning groove (123) is arranged around the outer periphery of the connecting block body (121) and communicates with the central groove (122). One end of the polymer anti-unwinding filament (3) passes through the central groove (122) and is wound inside the positioning groove (123). The first adhesive part (124) is disposed around the end of the connecting block body (121) and the spring ring (2).

4. The polymer anti-unwinding spring coil according to claim 1, characterized in that, The connecting block (12) includes: Connecting block body (121); A central groove (122) is provided at the center of the end of the connecting block body (121); An injection hole (125) is provided on the connecting block body (121) and connects the outer side of the connecting block body (121) and the central groove (122); The second adhesive part (126) is provided in the central groove (122) and the injection hole (125), and one end of the polymer anti-unwinding filament (3) is fixed in the central groove (122) through the second adhesive part (126); The first adhesive part (124) is disposed around the end of the connecting block body (121) and the spring ring (2).

5. The polymer anti-unwinding spring coil according to claim 4, characterized in that, The second adhesive portion (126) is formed by injecting glue into the glue injection hole (125) and then curing it.

6. The polymer anti-unwinding spring coil according to claim 1, characterized in that, The connecting block (12) includes: Connecting block body (121); A central groove (122) is provided at the center of the end of the connecting block body (121) and connects to the outer side of the connecting block body (121). One end of the polymer anti-unwinding filament (3) passes through the central groove (122) and extends to the outer side of the connecting block body (121) to form a plug (31). The first adhesive part (124) is disposed around the end of the connecting block body (121) and the spring ring (2).

7. The polymer anti-unwinding spring coil according to claim 6, characterized in that, The plug (31) is formed by knotting, sintering or gluing one end of the polymer anti-unwinding filament (3).

8. The polymer anti-unwinding spring coil according to any one of claims 1 to 7, characterized in that: The polymer anti-unwinding filament (3) is located at the central axis of the spring coil (2); The spring coil (2) has a diameter of 0.1 to 0.5 mm and is formed by winding a metal wire with a diameter of 0.01 to 0.1 mm. The diameter of the polymer anti-unwinding filament (3) is 0.01 to 0.1 mm.

9. The polymer anti-unwinding spring coil according to any one of claims 1 to 7, characterized in that, The polymer anti-dewinding yarn (3) is made of nylon, polypropylene, polyester or wool.

10. The polymer anti-unwinding spring coil according to any one of claims 1 to 7, characterized in that, The round end (21) is formed by sintering nylon, polypropylene or polyester material, or by curing after injection.

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