Intra-otonasal stent, stent pushing device and stent expansion device
By designing hollow areas and notch structures on the otolar cavity inner otolar cavity, it can shrink and expand, combined with push and expansion devices, the problem that the stent cannot adapt to different human structures in the prior art is solved, and the adaptability and effect of treatment are improved .
Patent Information
- Application Number
- CN202210886936.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-07-26
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2042-07-26
AI Technical Summary
The existing otolar stents cannot adapt to the otolar tract structure of different human structures, affecting the treatment effect.
A otolar intra-nasal cavity is designed, and by setting a hollow area and a notch structure on the side wall of the stent, the stent can be contracted and expanded to adapt to different otolar cavity structures. The stent pushing device realizes movement and expansion of the stent through the guidewire and the flange, and the stent expansion device expands through the expansion support of the stent of the capsule.
The deformation of the stent can be achieved, which can better adapt to the otolar tract structures of different human bodies, improve the adaptability and effect of treatment, and maintain the structural strength of the stent.
Smart Images
Figure CN115500992B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical equipment, and more specifically, to an ear and nose cavity stent, a stent pushing device and a stent expansion device. Background Art
[0002] At present, in order to treat diseases in the ear and nose cavities, it is often necessary to use a stent to support the ear and nose cavities before treatment. Supporting the cavities with a stent facilitates treatment, and the support effect of the stent on the cavities can affect the operation and treatment effect during treatment. The human body structures of different patients are different. The stents in the related art cannot adapt to the ear and nose cavities of different human bodies. Summary of the invention
[0003] One object of the present invention is to provide a new technical solution for an ear and nose cavity stent, a stent pushing device and a stent expansion device.
[0004] According to a first aspect of the present invention, there is provided an ear and nasal cavity stent, the ear and nasal cavity stent comprising:
[0005] A support body, wherein the support body is a tubular structure, and a side wall of the tubular structure has at least one first hollow area and at least one second hollow area;
[0006] The tubular structure has a first end and a second end, the first hollow area extends to the first end to form a first notch, and the second hollow area extends to the second end to form a second notch.
[0007] Optionally, the first hollow area and the second hollow area are both in a long strip structure, and the length direction of the first hollow area and the second hollow area is in the same direction as the axial direction of the tubular structure.
[0008] Optionally, a first hole structure is formed at the end of the first hollow area facing the second end, and a second hole structure is formed at the end of the second hollow area facing the first end.
[0009] Optionally, in the circumferential direction of the tubular structure, the radial dimension of the first hole structure is larger than the dimension of the first hollow area, and the radial dimension of the second hole structure is larger than the dimension of the second hollow area.
[0010] Optionally, in the circumferential direction of the tubular structure, the first hollow area and the second hollow area are evenly spaced apart.
[0011] Optionally, the first hollow area has the same structure as the second hollow area.
[0012] Optionally, a drug-carrying layer is provided on the outer surface of the side wall.
[0013] Optionally, the drug-carrying layer is a thin film structure formed by one of spraying, dipping and vapor deposition methods.
[0014] According to a second aspect of the present invention, a stent pushing device is provided, which is applied to the stent in the ear and nasal cavity as described in the first aspect, and the stent pushing device comprises: a guide wire, a flange and a first catheter, wherein the flange is located in the first catheter, and the guide wire passes through the first catheter;
[0015] When the stent body is located in the first conduit, the first notch and the second notch shrink, and the flange abuts against the end of the stent body.
[0016] According to a third aspect of the present invention, a stent expansion device is provided, which is applied to the stent in the ear and nasal cavity as described in the first aspect, and the stent expansion device comprises:
[0017] a second catheter, wherein a balloon is provided on the second catheter, and the second catheter can be inserted into the stent body so that the balloon is located inside the stent body;
[0018] When the balloon is expanded, the balloon can support the stent body from the inner side of the stent body to expand the first notch and the second notch.
[0019] According to one embodiment of the present disclosure, the first notch formed by the first hollow area on the side wall and the second notch formed by the second hollow area enable the stent body to shrink and expand to change the radial dimension of the tubular structure, thereby being able to adapt to different ear and nasal cavity structures.
[0020] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
[0022] Figure 1 It is a schematic diagram of the structure of the stent in the ear and nose cavity in the embodiment of the present disclosure.
[0023] Figure 2 It is one of the structural schematic diagrams of the bracket pushing device in the embodiment of the present disclosure.
[0024] Figure 3 This is the second structural schematic diagram of the bracket pushing device in the embodiment of the present disclosure.
[0025] Figure 4 Schematic diagram of the structure of the stent expansion device in the embodiment of the present disclosure.
[0026] Description of reference numerals:
[0027] 1. bracket body; 10. side wall; 11. first hollow area; 110. first notch; 111. first hole structure; 12. second hollow area; 120. second notch; 121. second hole structure;
[0028] 21. guide wire; 22. flange; 23. first catheter;
[0029] 31. Second catheter; 32. Cyst. DETAILED DESCRIPTION
[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.
[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.
[0033] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.
[0034] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0035] According to an embodiment of the present disclosure, there is provided an ear and nose cavity stent, such as Figure 1 As shown, the stent in the ear and nose cavity includes:
[0036] A support body 1, wherein the support body 1 is a tubular structure, and a side wall 10 of the tubular structure has at least one first hollow area 11 and at least one second hollow area 12;
[0037] The tubular structure has a first end and a second end, the first hollow area 11 extends to the first end to form a first notch 110, and the second hollow area 12 extends to the second end to form a second notch 120. The first hollow area 11 has a side wall 10 structure between one end away from the first notch 110 and the second end. The second hollow area 12 has a side wall 10 structure between one end away from the second notch 120 and the first end.
[0038] In the embodiment of the present disclosure, the side wall 10 of the bracket body 1 forms a tubular structure. Through the first notch 110 formed by the first hollow area 11 on the side wall 10 and the second notch 120 formed by the second hollow area 12, the bracket body 1 can shrink and expand to change the radial dimension of the tubular structure, thereby being able to adapt to different ear and nasal cavity structures.
[0039] For example, according to different ear and nasal cavity structures, the stent body 1 is adjusted to change the radial size of the stent body 1 in the tubular structure, thereby adapting to the size of the ear and nasal cavity structure to achieve the effect of auxiliary treatment of the ear and nasal cavities of different human bodies.
[0040] When the radial dimension of the stent body 1 of the tubular structure is changed, an external force is applied to the stent body 1. For example, the direction of the external force applied is from the outside to the inside of the stent body 1, so that the first hollow area 11 and the second hollow area 12 are contracted. The structures of the side walls 10 on both sides of the first hollow area 11 are close to each other, and the first notch 110 is reduced, and the structures of the side walls 10 on both sides of the second hollow area 12 are close to each other, and the second notch 120 is reduced. In this way, the structure of the stent body 1 can be contracted, and the radial dimension can be reduced to adapt to the ear and nose cavity structure of a smaller size.
[0041] For example, by applying an external force to the stent body 1. The direction of the external force applied is from the inside to the outside of the stent body 1, so that the first hollow area 11 and the second hollow area 12 are expanded. The structures of the side walls 10 on both sides of the first hollow area 11 are separated, the first notch 110 is expanded, and the structures of the side walls 10 on both sides of the second hollow area 12 are separated, and the second notch 120 is expanded. In this way, the structure of the stent body 1 can be expanded, and the radial size is increased to adapt to the ear and nose cavity structure of a larger size.
[0042] The first hollow area 11 extends to the first end to form a first notch 110, and the second hollow area 12 extends to the second end to form a second notch 120. Such a structure enables the stent body 1 to deform on both the side where the first end is located and the side where the second end is located during the process of contraction or expansion, so that the stent body 1 changes more evenly, improves the adaptability of the stent body 1 to the ear and nose cavity structure, and does not affect the structural strength of the stent body 1 itself.
[0043] Optionally, the first hollow area 11 and the second hollow area 12 may also have different size changes.
[0044] For example, the first hollow area 11 is contracted and the second hollow area 12 is expanded. Alternatively, the first hollow area 11 is expanded and the second hollow area 12 is contracted. In this way, a structure with different sizes of the first end and the second end can be formed to adapt to different ear and nasal cavity structures.
[0045] In one embodiment, Figure 1 As shown, the first hollow area 11 and the second hollow area 12 are both in a long strip structure, and the length direction of the first hollow area 11 and the second hollow area 12 is in the same direction as the axial direction of the tubular structure.
[0046] In the embodiment disclosed herein, the first hollow area 11 and the second hollow area 12 both extend along the axial direction of the tubular structure to form a long strip structure. The length direction of the long strip structure is in the same direction as the axial direction of the tubular structure, and the width direction of the long strip structure is in the same direction as the circumferential direction of the tubular structure. The first hollow area 11 and the second hollow area 12 are hollow structures of a long strip structure on the side wall 10, and the direction in which the hollow structure extends is the length direction, so that the length direction is set in the same direction as the axial direction of the tubular structure. In the process of contraction or expansion of the bracket body 1, the direction in which the side walls on both sides of the hollow structure approach and move away is along the width direction of the hollow structure, which can cause the hollow structure to contract or expand in the width direction, thereby more accurately changing the radial size of the bracket body 1 in the tubular structure.
[0047] Optionally, the first hollow area 11 and the second hollow area 12 have the same structure.
[0048] The first hollow area 11 and the second hollow area 12 have the same structure, which can make the first end and the second end deform to the same degree during the deformation process of contraction and expansion of the bracket body 1, and the stress on the first end and the second end during the deformation process is the same, so as to avoid structural damage and make the changes at both ends of the bracket body 1 more uniform when it is deformed.
[0049] In one embodiment, Figure 1 As shown, the end of the first hollow area 11 facing the second end forms a first hole structure 111, and the end of the second hollow area 12 facing the first end forms a second hole structure 121. The end of the first hollow area 11 is connected to the interior of the first hole structure 111. The end of the second hollow area 12 is connected to the interior of the second hole structure 121.
[0050] In the disclosed embodiment, the first notch 110 and the first hole structure 111 are located at both ends of the first hollow area 11, and the second notch 120 and the second hole structure 121 are located at both ends of the second hollow area 12. When the stent body 1 contracts or expands, the deformation amount generated on the side where the first notch 110 is located is larger than that on the side where the first hole structure 111 is located, and the first hole structure 111 can reduce the stress concentration at the end of the first hollow area 11 to avoid structural damage. The deformation amount generated on the side where the second notch 120 is located is larger than that on the side where the second hole structure 121 is located, and the second hole structure 121 can reduce the stress concentration at the end of the second hollow area 12 to avoid structural damage.
[0051] For example, the end of the first hollow area 11 of the long strip structure is connected to the interior of the first hole structure 111 , and the end of the second hollow area 12 of the long strip structure is connected to the interior of the second hole structure 121 .
[0052] Optionally, in the circumferential direction of the tubular structure, the radial dimension of the first hole structure 111 is larger than the dimension of the first hollow area 11 , and the radial dimension of the second hole structure 121 is larger than the dimension of the second hollow area 12 .
[0053] In the embodiment of the present disclosure, the radial dimension of the first hole structure 111 is larger than the dimension of the first hollow area 11 in the circumferential direction of the tubular structure, so that the end of the first hollow area 11 forms a continuous arc edge, thereby effectively reducing stress concentration. For example, the inner wall of the first hole structure 111 and the inner wall of the first hollow area 11 are continuous structures and smoothly transition. In this way, stress concentration in the connection area between the first hole structure 111 and the first hollow area 11 can be avoided.
[0054] The radial dimension of the second hole structure 121 is larger than the dimension of the second hollow area 12 in the circumferential direction of the tubular structure, so that the end of the second hollow area 12 forms a continuous arc edge, thereby effectively reducing stress concentration. For example, the inner wall of the second hole structure 121 and the inner wall of the second hollow area 12 are continuous structures and smoothly transition. In this way, stress concentration in the connection area between the second hole structure 121 and the second hollow area 12 can be avoided.
[0055] In one embodiment, in the circumferential direction of the tubular structure, the first hollow area 11 and the second hollow area 12 are evenly spaced apart.
[0056] In the disclosed embodiment, the uniform spacing makes the structural shape and volume between the hollow areas on the side wall 10 more uniform, thereby making the deformation amount and stress condition at each position of the bracket body 1 more uniform during the deformation process.
[0057] Optionally, Figure 1 In the example, six first hollow areas 11 and six second hollow areas 12 are provided. The number of the first hollow areas 11 and the second hollow areas 12 can be selected according to actual needs.
[0058] Optionally, the bracket body 1 is made of alloy material. The first hollow area 11, the second hollow area 12, the first hole structure 111 and the second hole structure 121 are all formed by laser.
[0059] In one embodiment, a drug-carrying layer is provided on the outer surface of the stent body.
[0060] In the disclosed embodiment, the drug-carrying layer has a therapeutic drug. The stent is arranged in the ear and nose cavity at the lesion position to form a support so that the drug-carrying layer contacts the lesion, thereby forming a therapeutic effect.
[0061] Optionally, the drug-carrying layer forms a complete sleeve structure on the surface of the side wall 10 to be sleeved on the outside of the stent in the ear and nasal cavity.
[0062] Alternatively, the drug-carrying layer has a notch structure corresponding to the first hollow area 11 and the second hollow area, so that the drug-carrying layer covers the outer surface of the side wall 10. The side wall 10 supports the drug-carrying layer, and when the side wall 10 contracts or expands, the drug-carrying layer deforms along with the side wall 10.
[0063] In one embodiment, the drug-carrying layer is a thin film structure formed by one of spray coating, dip coating and vapor deposition.
[0064] The film structure can be more easily disposed on the outer surface of the stent body and can be easily deformed as the stent body contracts or expands.
[0065] For example, drugs are disposed on the surface of the stent body by spraying, dipping, vapor deposition, or the like to form a thin film structure.
[0066] For example, the drug is placed on the carrier by spraying, dipping, vapor deposition, etc., and the carrier is attached to the outer surface of the stent body.
[0067] According to one embodiment of the present disclosure, Figure 2 , Figure 3 As shown, a stent pushing device is provided, which is applied to the stent in the ear and nasal cavity as described in any one of the embodiments of the present disclosure, and the stent pushing device includes: a guide wire 21, a flange 22 and a first catheter 23;
[0068] The flange 22 is provided on the guide wire 21, and the flange 22 protrudes along the radial direction of the guide wire 21. The flange 22 is located in the first catheter 23, and the guide wire 21 passes through the first catheter 23;
[0069] When the stent body 1 is located in the first conduit 23 , the first notch 110 and the second notch 120 shrink, and the flange 22 abuts against the end of the stent body 1 .
[0070] In the embodiment of the present disclosure, the guide wire 21 is used to pass through the stent body 1 of the stent in the ear and nose cavity, and the flange 22 is used to abut against the end of the stent body 1.
[0071] The first catheter 23 can be extended to the lesion position of the patient, and the flange 22 drives the stent body 1 to move by pulling the guide wire 21, so that the stent body 1 can move to the lesion position along the first catheter 23. After the stent body 1 is moved out of the first catheter 23, the first notch 110 and the second notch 120 are expanded and reset due to the elasticity of the stent body 1 itself.
[0072] By passing the guide wire 21 through the stent body 1, the flange 22 is abutted against the end of the stent body 1, so that the stent body 1 can be moved by pulling the guide wire 21. In this way, the stent body 1 can be driven by the stent pushing device to move to the position where the stent in the ear and nose cavity needs to be set.
[0073] Optionally, the flange 22 is arranged along the circumference of the guide wire 21 to form protrusions all along the circumference of the guide wire 21. In this way, the stent body 1 can be effectively pushed.
[0074] For example, before the stent body 1 is placed in the first catheter 23, the stent body 1 is shrunk, the first notch 110 and the second notch 120 are shrunk, and the radial dimension of the stent body 1 becomes smaller, so as to be placed in the first catheter 23. In this way, the radial dimension of the first catheter 23 can be set smaller, so as to facilitate insertion into the human body.
[0075] Optionally, the guide wire 21 on the side where the stent body 1 is moved out can have a structure with gradually changing radial dimensions, which gradually decreases from the flange 22 to the side in the direction where the stent body 1 is moved out, thereby facilitating the separation of the stent body 1 from the guide wire 21 .
[0076] In one embodiment, Figure 4 As shown, a stent expansion device is provided, which is applied to the stent in the ear and nasal cavity described in any one of the embodiments of the present disclosure, and the stent expansion device includes:
[0077] a second catheter 31, on which a capsule 32 is disposed, and the second catheter 31 can penetrate into the stent body 1 so that the capsule 32 is located inside the stent body 1;
[0078] When the balloon 32 is expanded, the balloon 32 can support the stent body 1 from the inner side of the stent body 1 so that the first notch 110 and the second notch 120 can expand.
[0079] In the embodiment of the present disclosure, after the stent body 1 is placed at the target position, the second catheter 31 is inserted into the stent body 1 so that the capsule 32 is located inside the stent body 1. Then, the capsule 32 is inflated through the second catheter 31 to expand the capsule 32, thereby supporting the stent body 1 to expand to adapt to the ear and nose cavity structure of the human body.
[0080] First, the stent body 1 is placed at the target position and then expanded to facilitate the delivery of the stent body 1 into the body. For example, the stent body 1 is delivered to the target position through the first catheter 23, and then the stent body 1 is expanded through the second catheter 31 and the balloon 32.
[0081] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.
[0082] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.
Claims
1. An ear and nose cavity stent, characterized in that: include: A support body, wherein the support body is a tubular structure, and a side wall of the tubular structure has at least one first hollow area and at least one second hollow area; The tubular structure has a first end and a second end, the first hollow area extends to the first end to form a first notch, the second hollow area extends to the second end to form a second notch, the end of the first hollow area facing the second end forms a first hole structure, the end of the second hollow area facing the first end forms a second hole structure, the first hole structure and the second hole structure are circular, in the circumferential direction of the tubular structure, the radial size of the first hole structure is larger than the size of the first hollow area, and the radial size of the second hole structure is larger than the size of the second hollow area; In the circumferential direction of the tubular structure, the first hollow area and the second hollow area are evenly spaced apart.
2. The ear and nose cavity stent according to claim 1, characterized in that: The first hollow area and the second hollow area are both in the form of long strips, and the length directions of the first hollow area and the second hollow area are in the same direction as the axial direction of the tubular structure.
3. The ear and nose cavity stent according to claim 1, characterized in that: The first hollow area has the same structure as the second hollow area.
4. The ear and nose cavity stent according to claim 1, characterized in that: The outer surface of the side wall is provided with a drug-carrying layer.
5. The ear and nose cavity stent according to claim 4, characterized in that: The drug-carrying layer is a thin film structure formed by one of spraying, dipping and vapor deposition methods.
6. A stent pushing device, applied to the stent in the ear and nose cavity as claimed in any one of claims 1 to 5, characterized in that: The stent pushing device comprises: a guide wire, a flange and a first catheter; The flange is provided on the guide wire, the flange protrudes along the radial direction of the guide wire, the flange is located in the first catheter, and the guide wire passes through the first catheter; When the stent body is located in the first conduit, the first notch and the second notch shrink, and the flange abuts against the end of the stent body.
7. A stent expansion device, applied to the stent in the ear and nose cavity as claimed in any one of claims 1 to 5, characterized in that: Stent expansion devices include: a second catheter, wherein a balloon is provided on the second catheter, and the second catheter can be inserted into the stent body so that the balloon is located inside the stent body; When the balloon is expanded, the balloon can support the stent body from the inner side of the stent body to expand the first notch and the second notch.