A new drug-loaded spring coil

Abstract

The utility model relates to the technical field of medical equipment, and specifically relates to a novel drug-loaded spring ring, which comprises a spring body, a sleeve ring, a weight-reducing hole and a dosing channel. An operator first fills the dosing channel with an appropriate amount of medicine, then inserts the spring body into a required blood vessel, and uses biological activity to twist or squeeze the spring body to drive the spring tube therein to dislocate and generate a fissure. The medicine then flows out through the fissure to achieve uniform drug delivery in a complex environment. The structure allows the medicine to be in the form of powder, gel or syrup, etc. The spring structure can better adapt to different blood vessels, and the device has good practicality and economy, which is beneficial to the promotion and use of the device.

Description

Technical Field

[0001] This utility model relates to the technical field of medical equipment, specifically to a novel drug-loaded spring coil. Background Technology

[0002] Medical coils are widely used in various vascular diseases, possessing characteristics such as traceability, flexibility, radiopaqueness, thrombosis prevention, and reversibility. When using typical medical ciliated drug-eluting coils, medication can be coated onto the ciliaries or coil body to accelerate the effect. However, because some blood vessels are located deep within the body, the applied medication cannot directly reach the lesion, resulting in reduced efficacy. Furthermore, some medications are in granular or syrup form, making direct loading and processing impossible. Processing alters the medicinal value of the medication, hindering precise application. Utility Model Content

[0003] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a novel drug-loaded spring coil with a simple structure, which can effectively realize drug loading in multiple states and avoid the reduction of drug delivery effect.

[0004] The technical solution adopted by this utility model is as follows: a novel drug-carrying spring coil, comprising several spring tubes, which are sequentially abutted to form a spring body, with a drug delivery channel provided in the middle gap, the spring body is bent to present a spiral spring structure, and several collars are provided on the outer side of the spring body.

[0005] In one embodiment, the drug delivery channel is filled with a powder, a gel, or a syrup.

[0006] In one embodiment, the reed tube has a weight-reducing hole in the middle, and the weight-reducing hole passes through the reed tube.

[0007] In one embodiment, the reed tube material is a platinum-tungsten alloy; or a combination of one or more of platinum, tungsten, gold, silver, tantalum, nickel-titanium alloy, cobalt-chromium alloy, and platinum-iridium alloy; or a polymer material.

[0008] In one embodiment, a plurality of the reed tubes are arranged in a circumferential array, and the cross-section of the reed tubes is an axisymmetric figure.

[0009] In one embodiment, the outer periphery of the reed tube is wrapped with cilia, and the surface of the cilia is coated with a gel-like drug.

[0010] In one embodiment, the reed tube has a hexagonal cross-section, and adjacent hexagonal reed tubes abut against each other.

[0011] In one embodiment, the side of the reed tube away from the drug delivery channel is an arc-shaped reed tube with an outer arc surface, and several of the outer arc-shaped reed tubes are spliced ​​together to form a circle.

[0012] The beneficial effects of this utility model are as follows: This utility model is a novel drug-loaded spring coil with a simple structure that effectively realizes drug loading in multiple drug states while avoiding a reduction in drug delivery efficacy. The specific implementation method is as follows:

[0013] The operator first fills the gap between the reed tubes with medicine, and then inserts the reed body into the desired blood vessel through relevant equipment. During use, the outer wall of the blood vessel is subjected to muscle compression, deformation, and spasm, causing the reed body to complete its structure. During the completion of the reed body, the bending curvature of the reed tubes at different positions is different, resulting in gaps between adjacent reed tubes, allowing the medicine to flow out or seep out, thus implementing the drug delivery function. This device has a simple structure, effectively solves the problem of drug loading in various states, and can avoid reducing the drug delivery effect. It has good practicality and economy, which is beneficial to the promotion and use of the device. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the ring of this utility model;

[0017] Figure 3 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the second cross-sectional three-dimensional structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the third cross-sectional three-dimensional structure of this utility model.

[0020] Figure descriptions: 1. Spring body; 11. Spring tube; 111. Drug delivery channel; 12. Ring; 13. Weight reduction hole; 14. Hexagonal spring tube; 15. Outer arc surface spring tube. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] The following is combined with Figure 1-5 The specific embodiments of this utility model are described below:

[0024] Example 1: A novel drug-loaded spring coil includes several spring tubes 11, the specific number of which depends on the actual blood vessel diameter and thickness. The attached diagram shows six groups, mainly for simplification and not representing the actual number or proportion. The spring tubes 11 are sequentially abutted to form a spring body 1, with gaps between them. A drug delivery channel 111 is provided in the middle of the gap. Furthermore, the spring tubes 11 are arranged in a circumferential array, and the cross-section of each spring tube 11 is axially symmetrical. The spring body 1 is bent to form a spiral spring structure. Several collars 12 are provided on the outer periphery of the spring body 1 to prevent the multiple groups of spring tubes 11 from scattering. The collars 12 can be made of rubber, which is existing technology and will not be described in detail here.

[0025] Advantageously, the drug delivery channel 111 is filled with a powder, gel, or syrup. Since the drug delivery channel 111 is a closed space with open ends, drugs of different forms can be introduced, and different drugs can be selected according to the different drugs to be released.

[0026] Beneficially, the spring tube 11 has a weight-reducing hole 13 in the middle, which passes through the spring tube 11, reducing the structural weight and increasing toughness to prevent deformation during operation.

[0027] Beneficially, the reed tube 11 is made of platinum-tungsten alloy; or a combination of one or more of platinum, tungsten, gold, silver, tantalum, nickel-titanium alloy, cobalt-chromium alloy, and platinum-iridium alloy. Some of these metals can reduce the body's rejection response to them, while also being highly flexible and easy to bend; or polymer materials, such as plastics.

[0028] Beneficially, the outer periphery of the reed tube 11 is wrapped with cilia, and the surface of the cilia is coated with a gel-like drug. At the same time, the cilia can accelerate and promote thrombus formation, which is existing technology and will not be described in detail here.

[0029] Example 2: A novel drug-loaded spring coil includes several spring tubes 11, the specific number depending on the actual blood vessel diameter and thickness (six groups are shown in the attached drawing for simplification, not representing the actual number or proportion). The spring tubes 11 are sequentially abutted to form a spring body 1, with gaps between them. A drug delivery channel 111 is provided in the middle of the gap. Furthermore, the spring tubes 11 are arranged in a circumferential array, and the cross-section of each spring tube 11 is axially symmetric. Specifically, the cross-section of each spring tube 11 is hexagonal, forming hexagonal spring tubes 14. Adjacent hexagonal spring tubes 14 abut against each other on their sides. Due to the flat edge splicing, it can be used for blood vessels with relatively small compression movements. Larger gaps between the spring tubes 11 can be achieved with minimal muscle activity. The spring body 1 is bent into a spiral spring structure. Several collars 12 are provided on the outer periphery of the spring body 1 to prevent multiple groups of spring tubes 11 from scattering. The collars 12 can be made of rubber, which is existing technology and will not be described in detail here.

[0030] Advantageously, the drug delivery channel 111 is filled with a powder, gel, or syrup. Since the drug delivery channel 111 is a closed space with open ends, drugs of different forms can be introduced, and different drugs can be selected according to the different drugs to be released.

[0031] Beneficially, the spring tube 11 has a weight-reducing hole 13 in the middle, which passes through the spring tube 11, reducing the structural weight and increasing toughness to prevent deformation during operation.

[0032] Beneficially, the reed tube 11 is made of platinum-tungsten alloy; or a combination of one or more of platinum, tungsten, gold, silver, tantalum, nickel-titanium alloy, cobalt-chromium alloy, and platinum-iridium alloy. Some of these metals can reduce the body's rejection response to them, while also being highly flexible and easy to bend; or polymer materials, such as plastics.

[0033] Beneficially, the outer side of the reed tube 11 is wrapped with cilia, and the surface of the cilia is coated with a gel-like drug. At the same time, the cilia can accelerate and promote thrombus formation, which is existing technology and will not be described in detail here.

[0034] Example 3: A novel drug-loaded spring coil includes several spring tubes 11, the specific number depending on the actual blood vessel diameter and thickness (six groups are shown in the attached diagram for simplification, not the actual number or proportion). The spring tubes 11 are sequentially abutted to form a spring body 1, with gaps between them. A drug delivery channel 111 is located in the middle of the gap. Furthermore, the spring tubes 11 are arranged in a circumferential array, and their cross-sections are axially symmetrical. Specifically, the side of the spring tube 11 away from the drug delivery channel 111 is an outer arc-shaped spring tube 15. The outer arc surfaces of several outer arc-shaped spring tubes 15 are joined to form a circle, reducing the sharp edges of the spring body 1 and facilitating installation of the spring body 1 in areas with thinner blood vessel walls. The spring body 1 is bent into a spiral spring structure, and several collars 12 are provided on the outer periphery of the spring body 1 to prevent the multiple groups of spring tubes 11 from scattering. The collars 12 can be made of rubber, which is existing technology and will not be described in detail.

[0035] Advantageously, the drug delivery channel 111 is filled with a powder, gel, or syrup. Since the drug delivery channel 111 is a closed space with open ends, drugs of different forms can be introduced, and different drugs can be selected according to the different drugs to be released.

[0036] Beneficially, the spring tube 11 has a weight-reducing hole 13 in the middle, which passes through the spring tube 11, reducing the structural weight and increasing toughness to prevent deformation during operation.

[0037] Beneficially, the reed tube 11 is made of platinum-tungsten alloy; or a combination of one or more of platinum, tungsten, gold, silver, tantalum, nickel-titanium alloy, cobalt-chromium alloy, and platinum-iridium alloy. Some of these metals can reduce the body's rejection response to them, while also being highly flexible and easy to bend; or polymer materials, such as plastics.

[0038] Beneficially, the outer side of the reed tube 11 is wrapped with cilia, and the surface of the cilia is coated with a gel-like drug. At the same time, the cilia can accelerate and promote thrombus formation, which is existing technology and will not be described in detail here.

[0039] Working principle of this utility model:

[0040] The operator first fills the gap between the reed tubes 11 with medicine, and then sends the reed body 1 into the required blood vessel through the relevant equipment. During use, the outer wall of the blood vessel is subjected to muscle compression, deformation and spasm, which causes the reed body 1 to be structurally complete. During the process of the reed body 1 being complete, the bending curvature of the reed tubes 11 at different positions is different, which causes gaps to appear between adjacent reed tubes 11, so that the medicine can flow out or seep out, thus realizing the function of drug delivery.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A novel drug-loaded spring coil, characterized by: It includes several reed tubes (11), which are arranged in sequence to form a spring body (1). A drug delivery channel (111) is provided in the middle gap. The spring body (1) is bent to present a spiral spring structure. Several collars (12) are provided on the outer side of the spring body (1).

2. The novel drug loaded spring coil according to claim 1, wherein: The drug delivery channel (111) is filled with a powder, a gel, or a syrup.

3. The novel drug loaded spring coil according to claim 1, wherein: The reed tube (11) has a weight-reducing hole (13) in the middle, and the weight-reducing hole (13) passes through the reed tube (11).

4. The novel drug loaded spring coil according to claim 3, wherein: The reed tube (11) is made of platinum-tungsten alloy; or a combination of one or more of platinum, tungsten, gold, silver, tantalum, nickel-titanium alloy, cobalt-chromium alloy, and platinum-iridium alloy; or a polymer material.

5. The novel drug-loaded spring coil according to claim 4, characterized in that: Several of the reed tubes (11) are arranged in a circular array, and the cross-section of the reed tubes (11) is an axisymmetric figure.

6. The novel drug loaded spring coil of claim 4, wherein: The outer side of the reed tube (11) is wrapped with cilia, and the surface of the cilia is coated with a gel-like drug.

7. The novel drug loaded spring coil of claim 5, wherein: The cross-section of the reed tube (11) is hexagonal, forming a hexagonal reed tube (14), with the sides of adjacent hexagonal reed tubes (14) abutting each other.

8. The novel drug loaded spring coil of claim 5, wherein: The side of the reed tube (11) away from the drug delivery channel (111) is an arc-shaped reed tube (15) with an outer arc surface, and several of the outer arc-shaped reed tubes (15) are spliced ​​together to form a circle.

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