Coagulating spring ring

Abstract

The utility model relates to a coagulation-promoting spring ring which comprises a two-stage spring ring, the secondary-form spring ring is formed by shaping a primary-form spring ring; the primary form spring ring is formed by winding a composite core wire; the composite core wire is divided into an inner layer and an outer layer, the inner layer is made of a corrosion-resistant material, and the outer layer is made of a degradable metal material; the potential of the inner-layer corrosion-resistant material is deviated to be positive, the potential of the outer-layer degradable metal material is deviated to be negative, and the inner-layer corrosion-resistant material and the outer-layer degradable metal material can form a primary battery in blood; the inner and outer layers of materials of the composite core wire can form a primary battery in blood, the outer layer material loses electrons to form metal positive ions, the inner layer material obtains electrons, and the positive ions can attract negative ions in the blood, so that thrombus is accelerated to form.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically a coagulation-promoting spring coil. Background Technology

[0002] Embolization coils are used to embolize arteriovenous malformations, arteriovenous fistulas, aneurysms, and other peripheral vascular system lesions. The coils are delivered to the lesion site via a guidewire or a built-in delivery system and then released.

[0003] Current embolization coils are generally made of platinum-tungsten alloy, which increases the volume or surface area to increase the space-occupying effect, thereby slowing blood flow and promoting coagulation. However, the coagulation efficiency is low, which increases the difficulty of patient recovery. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by providing a coagulation-promoting spring coil to solve or improve the problem of poor coagulation effect of existing embolization spring coils.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a coagulation-promoting spring coil, comprising a secondary-form spring coil; the secondary-form spring coil is formed by shaping a primary-form spring coil; the primary-form spring coil is wound with a composite core wire; the composite core wire is divided into inner and outer layers, wherein the inner layer is made of a corrosion-resistant material and the outer layer is made of a biodegradable metal material; the inner corrosion-resistant material has a positive potential, while the outer biodegradable metal material has a negative potential, and the two materials will form a galvanic cell in the blood.

[0006] Preferably, the corrosion-resistant material is one of platinum, platinum-tungsten alloy, platinum-iridium alloy, nickel-titanium alloy, and stainless steel.

[0007] Preferably, the biodegradable metal material is one of magnesium, magnesium alloy, zinc, zinc alloy, iron, and iron alloy.

[0008] Preferably, the outer diameter of the composite core wire is 0.02-0.3 mm, wherein the outer layer accounts for 5%-70% and the inner layer accounts for 30%-95%.

[0009] Preferably, the outer diameter of the primary spring coil is 0.1mm-1mm, and the length is 5mm-800mm.

[0010] Preferably, the outer diameter of the secondary spring coil is 1mm-60mm.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0012] Because the inner corrosion-resistant material has a positive potential and the outer biodegradable metal material has a negative potential, the two materials form a galvanic cell in the blood. The outer material loses electrons to form positive metal ions, while the inner material gains electrons. The positive ions attract negative ions in the blood, thereby promoting the accelerated formation of thrombi. Attached Figure Description

[0013] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0014] Appendix Figure 1 This is a schematic diagram of the secondary morphology spring coil in the coagulation-promoting spring coil of this utility model;

[0015] Appendix Figure 2 This is a schematic diagram of the primary form of the spring coil in the coagulation-promoting spring coil described in this utility model;

[0016] Appendix Figure 3 This is a cross-sectional view of the composite core wire in the coagulation-promoting spring coil described in this utility model.

[0017] Among them: 1. Secondary form spring coil; 2. Primary form spring coil; 3. Composite core wire; 31. Inner layer; 32. Outer layer. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Appendix Figure 1-3 The coagulation-promoting spring coil of this utility model comprises a secondary spring coil 1; the secondary spring coil 1 is formed by shaping a primary spring coil 2; the primary spring coil 2 is wound with a composite core wire 3; the composite core wire 3 is divided into inner and outer layers, wherein the inner layer 31 is made of corrosion-resistant materials such as platinum, platinum-tungsten alloy, platinum-iridium alloy, nickel-titanium alloy, and stainless steel, and the outer layer 32 is made of biodegradable metal materials such as magnesium, magnesium alloy, zinc, zinc alloy, iron, and iron alloy; the corrosion-resistant material of the inner layer 31 has a positive potential, while the biodegradable metal material of the outer layer 32 has a negative potential, and the two materials will form a galvanic cell in the blood.

[0020] In this embodiment, the outer diameter of the composite core wire 3 is 0.02-0.3 mm, wherein the outer layer 32 accounts for 5%-70% and the inner layer 31 accounts for 30%-95%.

[0021] In this embodiment, the outer diameter of the primary spring coil 2 is 0.1mm-1mm, and the length is 5mm-800mm.

[0022] In this embodiment, the outer diameter of the secondary spring coil 1 is 1mm-60mm.

[0023] Because the inner corrosion-resistant material has a positive potential and the outer biodegradable metal material has a negative potential, the two materials form a galvanic cell in the blood. The outer material loses electrons to form positive metal ions, while the inner material gains electrons. The positive ions attract negative ions in the blood, thereby promoting the accelerated formation of thrombi.

[0024] Surgical procedure:

[0025] The delivery catheter is advanced to the lesion site. The coil is then pushed into the delivery catheter using a guidewire or a coil delivery system. After confirming the catheter's position, the coil is pushed out of the delivery catheter and released. Once released into the blood vessel, the coil will form a thrombus on its surface, thereby achieving the purpose of embolizing the blood vessel.

[0026] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A type of coagulating spring coil, characterized in that: It includes a secondary-form spring coil; the secondary-form spring coil is formed from a primary-form spring coil; the primary-form spring coil is wound with a composite core wire; the composite core wire is divided into inner and outer layers, wherein the inner layer is made of a corrosion-resistant material and the outer layer is made of a biodegradable metal material; the inner corrosion-resistant material has a positive potential, while the outer biodegradable metal material has a negative potential, and the two materials will form a galvanic cell in the blood.

2. The coagulation-promoting spring coil according to claim 1, characterized in that: The corrosion-resistant material is one of platinum, platinum-tungsten alloy, platinum-iridium alloy, nickel-titanium alloy, or stainless steel.

3. The coagulation-promoting spring coil according to claim 1, characterized in that: The biodegradable metallic material is one of magnesium, magnesium alloy, zinc, zinc alloy, iron, and iron alloy.

4. The coagulation-promoting spring coil according to any one of claims 1-3, characterized in that: The outer diameter of the composite core wire is 0.02-0.3 mm, with the outer layer accounting for 5%-70% and the inner layer accounting for 30%-95%.

5. The coagulation-promoting spring coil according to claim 4, characterized in that: The outer diameter of the primary spring coil is 0.1mm-1mm, and the length is 5mm-800mm.

6. The coagulation-promoting spring coil according to claim 5, characterized in that: The outer diameter of the secondary spring coil is 1mm-60mm.

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