A shuttle-shaped deformable spring coil
By designing a spindle-shaped deformable spring coil, using wound metal wire and biofilm structure, the problems of excessive cross-section and low tamponade rate of existing spring coils are solved, and higher tamponade density and safety are achieved, suitable for cerebral artery Treatment of tumors.
Patent Information
- Application Number
- CN202210774970.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-07-01
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2042-07-01
AI Technical Summary
The existing spring coils have too large cross-sections when treating cerebral aneurysms, low tamponade rate and high risk, and are prone to poke the aneurysms, resulting in high treatment costs and insufficient safety.
Design a spindle-shaped deformable spring coil, which increases the cross-section and throttling area through two wrapped elastic wires and biomass, and expands at a single point at the preset position using the slider and micro-catheter structure to form an elliptical shape. Metal wire body for improved packing density and safety.
It achieves improving the packing density and safety without affecting the application, increasing the use area of the wire, reducing the number of single-use coils, and improving the density and safety of treatment.
Smart Images
Figure CN115153713B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of therapeutic instruments, in particular to a shuttle-shaped deformable spring coil. Background Art
[0002] A cerebral aneurysm can be defined as a thin-walled spherical structure formed by the outward expansion or expansion of a weak part of the intracranial artery wall, most commonly found in arterial bifurcations, especially the cerebral artery circle. Rupture of a cerebral aneurysm often causes severe neurological dysfunction and can even be life-threatening.
[0003] For example, the invention with the authorization announcement number CN104257412A discloses an interventional treatment device made of composite materials for cerebral aneurysm embolization. Although the beaded diamond coils can be coiled into a spatial structure that conforms to the aneurysm through the connection points between the diamonds to fill the aneurysm, and at the same time, the PU nano-electrospinning between the diamond coils can isolate the blood flow, promote the formation of thrombus in the aneurysm, and achieve the purpose of sealing the aneurysm, but the input cross-section is too large, which is not conducive to the application. The two commonly used treatment methods are: intravascular interventional treatment and craniotomy. Among them, intravascular coil embolization is the main treatment for intracranial aneurysms, but the existing coil surgery is expensive, the dense filling rate is low, and the simple coil is also easy to puncture the aneurysm, which is relatively risky. For this reason, we propose a fusiform deformable coil. Summary of the invention
[0004] In order to overcome the shortcomings of the prior art, the present invention provides a shuttle-shaped deformable spring coil. The present invention increases the overall cross-section by arranging two winding elastic metal wires, and on this basis proposes a biological coating and a transverse metal wire that expand the throttling area, and a metal wire body that can be expanded at a single point. It can increase the use area of the metal wire without affecting the release, has a high dense filling rate, and has good safety.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a shuttle-shaped deformable spring coil, a shuttle-shaped deformable spring coil, the spring coil comprising
[0006] A central axis metal wire, a first eccentric metal wire is connected to the outside of the central axis metal wire, the first eccentric metal wire is connected to a plurality of sliders in sequence, and a microcatheter is connected to the end of the first eccentric metal wire, the slider is slidably connected to the surface of the central axis metal wire, and a second eccentric metal wire is provided between two adjacent sliders.
[0007] Preferably, the central axis metal wire, the first eccentric metal wire and the second eccentric metal wire are all composed of two wound elastic metal wires, and a biological film is provided inside the elastic metal wire.
[0008] Preferably, the biofilm in the elastic metal wire can be replaced by a transverse metal wire.
[0009] Preferably, there are two second eccentric metal wires in total, and the two second eccentric metal wires are in symmetrical positions.
[0010] Preferably, there are two first eccentric metal wires in total, and the two first eccentric metal wires are symmetrically distributed along the surface of the central axis metal wire.
[0011] Preferably, the slider is in a cylindrical structure, and the sliders are distributed at equal distances along the surface of the central axis metal wire.
[0012] Compared with the prior art, the present invention can achieve the following beneficial effects:
[0013] The present invention increases the cross-section of the whole by arranging two winding elastic metal wires, and on this basis proposes a biological coating and a transverse metal wire that expand the throttling area, and a metal wire body that can be expanded at a single point. It can increase the use area of the metal wire without affecting the release, has a high dense filling rate, and is safe. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0015] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;
[0016] Among them: 1. central axis metal wire; 2. first eccentric metal wire; 3. second eccentric metal wire; 4. slider; 5. biological membrane; 6. microcatheter. DETAILED DESCRIPTION
[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.
[0018] Embodiment 1
[0019] like Figure 1-2As shown, a shuttle-shaped deformable spring coil comprises a central axis metal wire 1, a first eccentric metal wire 2 is connected to the outside of the central axis metal wire 1, a plurality of sliders 4 are connected to the first eccentric metal wire 2 in sequence, and a microcatheter 6 is connected to the end of the first eccentric metal wire 2, the slider 4 is slidably connected to the surface of the central axis metal wire 1, and a second eccentric metal wire 3 is arranged between two adjacent sliders 4; the central axis metal wire 1, the first eccentric metal wire 2, and the second eccentric metal wire 3 are all composed of two wound elastic metal wires, and a biological coating 5 is arranged inside the elastic metal wire; the biological coating 5 inside the elastic metal wire can be replaced by a transverse metal wire.
[0020] Embodiment 2
[0021] In other embodiments, the present embodiment discloses, please Figure 1 As shown, there are two second eccentric metal wires 3, and the two second eccentric metal wires 3 are in symmetrical positions;
[0022] In other embodiments, the present embodiment discloses, please Figure 1 As shown, there are two first eccentric metal wires 2, and the two first eccentric metal wires 2 are symmetrically distributed along the surface of the central axis metal wire 1;
[0023] In other embodiments, the present embodiment discloses, please Figure 1 As shown, the slider 4 is a cylindrical structure, and the sliders 4 are distributed at equal distances along the surface of the central axis metal wire 1;
[0024] When in use, it is combined into a metal wire before being input into the aneurysm. After reaching the preset position, the metal wire is ejected at a single point, and the area is expanded into an elliptical shape, which can effectively reduce the number of spring coils used. The present invention arranges two winding elastic metal wires to increase the cross-section as a whole, and on this basis proposes a biological coating 5 that expands the throttling area and a transverse metal wire, and a metal wire that can be expanded at a single point. It can increase the use area of the metal wire without affecting the placement, has a high dense filling rate, and is safe.
[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. A shuttle-shaped deformable spring coil, characterized in that: The spring coil comprises A central axis metal wire (1), the outer side of the central axis metal wire (1) is connected to a first eccentric metal wire (2), the first eccentric metal wire (2) is sequentially connected to a plurality of sliders (4), and the end of the first eccentric metal wire (2) is connected to a microcatheter (6), the slider (4) is slidably connected to the surface of the central axis metal wire (1), and a second eccentric metal wire (3) is provided between two adjacent sliders (4); The central axis metal wire (1), the first eccentric metal wire (2), and the second eccentric metal wire (3) are all composed of two wound elastic metal wires, and a biological coating (5) is provided inside the elastic metal wire.
2. The shuttle-shaped deformable spring coil according to claim 1, characterized in that: The biological film (5) inside the elastic metal wire can be replaced by a transverse metal wire.
3. The shuttle-shaped deformable spring coil according to claim 1, characterized in that: The number of the second eccentric metal wires (3) is two in total, and the two second eccentric metal wires (3) are in symmetrical positions.
4. The shuttle-shaped deformable spring coil according to claim 1, characterized in that: The number of the first eccentric metal wires (2) is two in total, and the two first eccentric metal wires (2) are symmetrically distributed along the surface of the central axis metal wire (1).
5. The shuttle-shaped deformable spring coil according to claim 1, characterized in that: The sliders (4) are cylindrical in structure, and the sliders (4) are distributed at equal distances along the surface of the central axis metal wire (1).