Modification assembly and nicking balloon

Abstract

The modified component comprises a component body, a left end and a right end, the component body comprises a plurality of substructures which are distributed in a staggered mode, every two adjacent substructures are connected through a connecting rod structure, and any connecting rod structure is parallel to a center shaft of the modified component; the balloon can solve the problems that a common balloon is easy to cause interlayer hematoma and increase the risk of acute vascular occlusion due to tearing caused by disordered expansion of plaques, and when the balloon is matched with a PTA balloon for use, pressure is intensively applied to a calcification lesion part for expansion under a certain filling pressure, so that after the balloon is expanded, the plaque tearing can be mostly generated in the long axis direction of a blood vessel, and the blood vessel acute occlusion risk is increased. The formation of a flow-limiting interlayer is reduced; meanwhile, the sacculus is easily fixed on the surface of the plaque, so that the sacculus is prevented from slipping off, the cutting surface can be promoted to expand and be attached to the iliac, femur, iliofemoral, popliteal artery and renal artery stenosis, and the sacculus can be used for treating obstructive lesion of arteriovenous fistula.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a modified component and a scored balloon. Background Art

[0002] Peripheral vascular disease (PAD) refers to vascular lesions other than the coronary and intracranial arteries, including those in the upper limb arteries, visceral arteries, lower limb arteries, supra-arch arterial branches, and the aorta. Its pathological mechanism is primarily atherosclerotic vascular stenosis. Globally, more than 200 million people suffer from varying degrees of PAD.

[0003] Common treatments for PAD include medication, surgery, and endovascular therapy. Endovascular therapy can be categorized as balloon angioplasty (also known as percutaneous transluminal angioplasty (PTA), stent implantation (bare metal stents and drug-eluting stents), atherectomy, and drug-coated balloons (DCBs). Doctors select the treatment method based on the patient's condition. Balloon angioplasty is an interventional therapy in which a balloon dilatation catheter is delivered over a guidewire to the target arterial lesion. The balloon is then pressurized and inflated, generating an expansion force that dilates the narrowed artery.

[0004] Balloon dilatation catheters inflate the distal balloon, compressing plaque and stretching the vessel wall to reduce vascular stenosis. However, this can be accompanied by complications such as intimal tears and vascular elastic retraction. For hard, narrowing lesions (such as calcified lesions), increasing the balloon filling pressure is often necessary to reduce the degree of stenosis and achieve sufficient lumen volume. Increased filling pressure increases the stretching of the vessel wall, increasing the likelihood of vascular injury-related complications (such as severe dissection and rebound). For particularly stubborn and hard lesions, the balloon may be inflated to near the burst pressure and still fail to compress the plaque. Utility Model Content

[0005] The utility model provides a modified component and a scored balloon, which can at least solve one problem pointed out in the background technology.

[0006] A decorative component comprising:

[0007] The component body is a mesh structure with openings at both ends;

[0008] The left end includes several rectangular slots; and

[0009] The right end is a concave groove structure;

[0010] The component body includes multiple sub-structures that are staggered and distributed, and two adjacent sub-structures are connected by a connecting rod structure.

[0011] Preferably, the component body includes 7-10 groups of substructures distributed along the axial direction, and each group of substructures includes 3-5 sections of substructures distributed along the circumferential direction.

[0012] Preferably, the component body includes 15-18 groups of connecting rod structures distributed along the axial direction, and each group of connecting rod structures includes 3-5 connecting rod structures distributed along the circumferential direction.

[0013] Preferably, the wall thickness of the component body is 0.2mm-0.5mm.

[0014] Preferably, any of the connecting rod structures is parallel to the central axis of the decorative component.

[0015] Preferably, the substructure is a diamond ring structure.

[0016] Preferably, the substructure is an elliptical ring structure.

[0017] Preferably, the width of the connecting rod structure is 0.16-0.20 mm.

[0018] A scored balloon includes a modifying component.

[0019] Compared with the existing technology, the beneficial effects of the present invention are: the present invention can solve the problem that the disordered expansion of plaques caused by ordinary balloons can easily lead to tearing and cause dissection hematoma, increasing the risk of acute vascular occlusion. When used in conjunction with a PTA balloon, under a certain filling pressure, the calcified lesions are locally pressurized and expanded, so that after the balloon is expanded, the plaque tearing can be guided to occur mostly in the long axis direction of the blood vessel, reducing the formation of flow-limiting dissections; at the same time, the balloon can be easily fixed on the surface of the plaque to avoid balloon slippage, and can promote the expansion and attachment of the cutting surface to the stenosis of the iliac, femoral, iliofemoral, popliteal arteries and renal arteries, and can be used to treat obstructive lesions of arteriovenous fistulas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model after expansion;

[0021] Figure 2 It is a structural diagram of the component body of the utility model.

[0022] Description of reference numerals:

[0023] 1- component body, 2- left end, 3- right end, 4- substructure, 5- connecting rod structure -. DETAILED DESCRIPTION

[0024] A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0025] Example 1

[0026] like Figures 1 to 2 As shown, an embodiment of the present invention provides a decorative component, which is formed by laser engraving and can be partially filled. It includes a component body 1, a left end 2, and a right end 3. The component body 1 includes multiple staggered substructures 4, and adjacent substructures 4 are connected by connecting rod structures 5. Each connecting rod structure 5 is parallel to the central axis of the decorative component.

[0027] In addition, the left in the left end 2 and the right in the right end 3 do not necessarily refer to directions, but are only used to distinguish two ends, and can also be understood as the first end and the second end respectively;

[0028] The left end 2 includes 3-5 rectangular grooves, which are 0.4-0.8 mm long and 0.8-1.1 mm wide;

[0029] The right end 3 is a concave groove structure with a groove width of about 1.1-1.4mm;

[0030] The component body 1 is a mesh structure with two openings at both ends. The component body 1 of this embodiment includes:

[0031] 7-10 groups of substructures distributed along the axial direction, each group of substructures including 3-5 segments of substructures 4 distributed along the circumferential direction; and

[0032] 15-18 groups of connecting rod structures distributed along the axial direction, each group of connecting rod structures includes 3-5 connecting rod structures 5 distributed along the circumferential direction; the connecting rod structure 5 is used to connect two adjacent substructures 4, and the specific number can be selected according to actual conditions;

[0033] The width of the connecting rod structure 5 of this embodiment is selected to be 0.16mm-0.20mm;

[0034] The width of the substructure 4 is selected to be 0.07mm-1.00mm;

[0035] The wall thickness of the component body 1 is selected to be 0.2mm-0.5mm;

[0036] The tips of the left end 2 and the right end 3 are both grooved and can be assembled and docked with the sheath tube;

[0037] The component body 1 has the flexibility of a metal skeleton frame and can reach the lesion site through tortuous blood vessels;

[0038] The modified component is assembled on the scored balloon. As the balloon expands, the radius of the inscribed circle of the substructure 4 increases, shortening axially and expanding radially. As the balloon expands to the ideal outer diameter, the substructure is evenly expanded and distributed on the outer wall of the balloon, which can regularly and orderly cut the plaque, relieve the hoop stress of the blood vessel wall, increase the plaque compression ratio, and reduce intimal dissection and vascular elastic retraction. As the balloon is depressurized and withdrawn, it can return to its original shape and withdraw from the lesion site, achieving the therapeutic effect.

[0039] To achieve the cutting effect, Figure 2 As shown, the substructure of this embodiment is a diamond ring structure, and of course it can also be designed as an elliptical ring structure;

[0040] Example 2

[0041] In order to solve the problem that the disordered expansion of plaques caused by ordinary balloons can easily lead to tearing and cause dissection hematoma, thereby increasing the risk of acute vascular occlusion, this embodiment proposes a scored balloon, which includes the modified component of Example 1. The modified component is a metal skeleton frame, which is an independent scored sheath platform. The PTA balloon can be matched with the inside. Under a certain filling pressure, it can exert concentrated pressure and expansion on the calcified lesions locally, so that after the balloon is expanded, the plaque tearing can be guided to occur mostly in the long axis direction of the blood vessel, reducing the formation of flow-limiting dissections.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A decorative component, characterized in that include: The component body is a mesh structure with openings at both ends; The left end includes several rectangular slots; as well as The right end is a concave groove structure; The component body includes multiple sub-structures that are staggered and distributed, and two adjacent sub-structures are connected by a connecting rod structure.

2. The decorative component according to claim 1, wherein The component body includes 7-10 groups of substructures distributed along the axial direction, and each group of substructures includes 3-5 sections of substructures distributed along the circumferential direction.

3. The decorative component according to claim 1, wherein The component body includes 15-18 groups of connecting rod structures distributed along the axial direction, and each group of connecting rod structures includes 3-5 connecting rod structures distributed along the circumferential direction.

4. The decorative component according to claim 1, wherein The wall thickness of the component body is 0.2mm-0.5mm.

5. The decorative component according to claim 1, wherein Any of the connecting rod structures is parallel to the central axis of the modifying component.

6. The decorative component according to claim 1, wherein The substructure is a diamond ring structure.

7. The decorative component according to claim 1, wherein The substructure is an elliptical ring structure.

8. The decorative component according to claim 1, wherein The width of the connecting rod structure is 0.16-0.20 mm.

9. A scored balloon, characterized in that: Comprising the modifying component according to any one of claims 1 to 8.

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