A bull-nose balloon and balloon dilatation catheter

Abstract

The application discloses a papillary balloon and a balloon dilatation catheter, and relates to the technical field of medical devices. The papillary balloon comprises a balloon main body, an inflatable body and a plurality of protrusions. The inflatable body is arranged on the peripheral wall of the balloon main body and extends along the length direction of the balloon main body. The inflatable body is provided with a fluid inlet for passing in fluid and a fluid channel in communication with the fluid inlet, so that the inflatable body can be inflated or contracted under the action of the fluid. The plurality of protrusions are arranged on the inflatable body and are arranged at intervals along the length direction of the inflatable body. The papillary balloon is improved in the protrusion structure, the height of the protrusion is adjustable, the sliding of the balloon during the expansion of a narrow lesion is effectively prevented, and the treatment effect and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a mastoid balloon and a balloon dilation catheter. Background Art

[0002] The balloon of the balloon dilatation catheter is basically a smooth balloon. When pressurized during treatment, the calcified lesions are hard and are easily squeezed by the calcified lesions during the process of balloon pressurization, causing the calcified lesions to be squeezed out of the position. The balloon is squeezed into the normal blood vessels, which not only has the risk of causing vascular trauma, but also fails to dilate the stenosis.

[0003] Prior art balloons have been designed to reduce the possibility of slippage by adding raised dots on their outer surface. However, these raised dots are solid and have a fixed height. This can lead to excessive compression or poor contact between the dots and the vessel wall in different vessel sizes or lumens, making the anti-slip effect of these balloons less than ideal. Summary of the Invention

[0004] The main purpose of the present invention is to provide a mastoid balloon and a balloon dilation catheter, aiming to improve the anti-slip effect of the mastoid balloon.

[0005] To achieve the above objectives, the present invention provides a mastoid balloon comprising:

[0006] balloon body;

[0007] an expandable body, disposed on the outer peripheral wall of the balloon body and extending along the length of the balloon body, the expandable body being provided with a fluid inlet for admitting fluid and a fluid channel communicating with the fluid inlet, so that the expandable body can expand or contract under the action of the fluid; and

[0008] A plurality of protrusions are provided on the expandable body and are used to prevent the balloon body and the target part from sliding relative to each other.

[0009] Optionally, the protrusion is a hollow structure having a cavity, and the cavity of the protrusion is connected to the fluid channel.

[0010] Optionally, the protrusion is a solid structure.

[0011] Optionally, the expandable body is an air bag or a liquid bag.

[0012] Optionally, the radial cross-section of the expandable body in the expanded state is circular, semicircular or trapezoidal.

[0013] Optionally, there are multiple expandable bodies, and the multiple expandable bodies are arranged at intervals along the circumference of the balloon body and can be controlled to expand or contract individually or synchronously, and at least one of the expandable bodies is provided with multiple protrusions.

[0014] Optionally, the expandable body includes an attachment section and an extension section connected to the attachment section, the attachment section is attached to the outer peripheral wall of the balloon body, the extension section is connected to the attachment section and is suitable for extending to the proximal end of the balloon dilatation catheter, and the fluid inlet is arranged at the proximal end of the extension section.

[0015] Optionally, the length of the attachment segment is the same as the length of the balloon body, and a plurality of protrusions are provided on the attachment segment.

[0016] Optionally, a plurality of the protrusions are arranged at intervals along the length direction of the expandable body.

[0017] To achieve the above object, the present invention further provides a balloon dilatation catheter, comprising:

[0018] a catheter having a filling channel and a guidewire lumen;

[0019] The mastoid balloon as described above is provided at the distal end of the catheter and communicates with the filling channel, and the mastoid balloon comprises:

[0020] balloon body;

[0021] an expandable body, disposed on the outer peripheral wall of the balloon body and extending along the length direction of the balloon body, the expandable body being provided with a fluid inlet for admitting fluid and a fluid channel communicating with the fluid inlet, so that the expandable body can expand or contract under the action of the fluid;

[0022] A plurality of protrusions are provided on the expandable body and are used to prevent the balloon body and the target part from sliding relative to each other.

[0023] Optionally, the protrusion is a hollow structure having a cavity, and the cavity of the protrusion is connected to the fluid channel; and

[0024] The catheter seat is installed at the proximal end of the catheter. The catheter seat is provided with a filling port and a guidewire port which are respectively communicated with the filling channel and the guidewire cavity of the catheter.

[0025] Optionally, the catheter includes an inner tube and an outer tube arranged around the circumference of the inner tube, the gap between the outer tube and the inner tube is the filling channel, the inner cavity of the inner tube is the guide wire cavity, the distal end of the mastoid balloon is connected to the end of the inner tube, and the proximal end of the mastoid balloon is connected to the end of the outer tube.

[0026] In the technical solution of the present invention, the mastoid balloon includes a balloon body, an expandable body, and a plurality of protrusions; the expandable body is provided on the outer peripheral wall of the balloon body and extends along the length of the balloon body; the expandable body is provided with a fluid inlet for introducing fluid and a fluid channel connected to the fluid inlet, so that it can expand or contract under the action of the fluid; the plurality of protrusions are provided on the expandable body and are used to prevent relative sliding between the balloon body and the target site. It can be understood that the present invention improves the protrusion structure of the mastoid balloon. By providing the protrusions on the expandable body, the expansion and contraction of the expandable body and the expansion and contraction of the protrusions themselves can achieve precise adjustment of the protrusion height, effectively preventing the balloon from sliding when dilating stenotic lesions, and improving the treatment effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of an embodiment of the mastoid balloon of the present invention;

[0029] Figure 2 A schematic diagram of the distal end of a mastoid balloon according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic structural diagram of another angle of an embodiment of the mastoid balloon of the present invention;

[0031] Figure 4 This is a structural diagram of another angle of an embodiment of the mastoid balloon of the present invention.

[0032] Description of Figure Numbers:

[0033] 10. Balloon body; 20. Expandable body; 30. Protrusion; 21. Attachment section; 22. Extension section.

[0034] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0038] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. The meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution in which both A and B are satisfied. The technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The present invention provides a mastoid balloon.

[0040] Reference Figures 1 to 4 In some embodiments of the present invention, the mastoid balloon includes a balloon body 10, an expandable body 20 and a plurality of protrusions 30; the expandable body 20 is provided on the outer peripheral wall of the balloon body 10 and extends along the length direction of the balloon body 10, and the expandable body 20 is provided with a fluid inlet for passing fluid and a fluid channel connected to the fluid inlet, so that it can expand or contract under the action of the fluid; a plurality of protrusions 30 are provided on the expandable body 20 and are arranged at intervals along its length direction, so as to prevent the balloon body 10 from sliding relative to the target part such as the blood vessel wall.

[0041] In this embodiment, the expandable body 20 may be a plurality of air bags or liquid bags filled with liquid, which is not limited here.

[0042] In this embodiment, the protrusions 30 can be hollow structures with cavities, and can be small bumps, bumps, or ridges that can provide an anti-slip effect. The multiple protrusions 30 and the expandable body 20 can be an integrally formed hollow structure, that is, the cavities of the protrusions 30 are connected to the inner cavity of the expandable body 20. The protrusions 30 can be the same size or different sizes. The multiple protrusions 30 can be evenly distributed on the expandable body 20 or arranged irregularly on the expandable body 20, which is not limited here.

[0043] It can be understood that the present invention improves the protrusion structure of the mastoid balloon. By setting the protrusion 30 on the expandable body 20, the height of the protrusion 30 can be precisely adjusted through the expansion and contraction of the expandable body 20 and the expansion and contraction of the protrusion 30 itself, effectively preventing the balloon from sliding when expanding and narrowing lesions, thereby improving the treatment effect and efficiency.

[0044] In some embodiments, reference Figures 1 to 4 When the protrusion 30 adopts a hollow structure with a cavity, it is preferable to connect the cavity of the protrusion 30 to the fluid channel. In this way, the fineness of the height adjustment of the protrusion can be further improved, thereby further improving the anti-slip effect of the mastoid balloon.

[0045] In order to better adapt to the inner cavity environment of the blood vessel and avoid the expansion or compression of the blood vessel wall by the expandable body 20 during the operation, Figures 1 to 4 In some embodiments, the radial cross-section of the expandable body 20 in the expanded state can be set to be circular, semicircular, trapezoidal, etc.

[0046] In some embodiments, reference Figures 1 to 4 The balloon body 10 includes multiple expandable bodies 20, each of which is spaced apart along the circumference of the balloon body 10 and can be independently expanded or contracted. At least one of the expandable bodies 20 is provided with multiple protrusions 30. Thus, by spacing out multiple expandable bodies 20 with protrusions 30 on the balloon body 10, the anti-slip performance of the mastoid balloon can be enhanced. Furthermore, because the expandable bodies 20 can be independently controlled to expand or contract, the anti-slip performance of the mastoid balloon can be further enhanced, and directional anchoring of the balloon can be achieved.

[0047] In actual operation, the balloon is fixed in a fixed position by selecting which expandable body 20 to inflate and which protrusions 30 to penetrate the lesion, based on the location of the lesion. Generally, the expandable body 20 on the lesion side is inflated. If inflating only one expandable body 20 is sufficient to achieve anchoring, there is no need to inflate the other expandable bodies 20. This is because if these protrusions 30 penetrate the normal vessel wall, they may damage the vessel.

[0048] It should be noted that the independent control of the expansion or contraction of the expandable body 20 can be achieved by providing each expandable body 20 with a fluid inlet.

[0049] In some embodiments, reference Figures 1 to 4 The expandable body 20 may include an attachment section 21 and an extension section 22 connected to the attachment section 21. The attachment section 21 is attached to the outer peripheral wall of the balloon body 10. The extension section 22 is connected to the attachment section 21 and is adapted to extend to the proximal end of the balloon dilation catheter. The fluid inlet is provided at the proximal end of the extension section 22. In this way, gas or liquid can be easily introduced into the expandable body 20.

[0050] In this embodiment, the distal ends of the attachment segments 21 of the multiple expandable bodies 20 can be fixed to the distal end of the balloon. The length of the attachment segments 21 can be the same as the length of the balloon body 10. The multiple protrusions 30 are provided on the attachment segments 21, which can further enhance the anti-slip effect of the mastoid balloon.

[0051] In this embodiment, a protective tube may be provided on the periphery of the extension section 22, or the extension section 22 may be fixed to the outer wall of the balloon catheter to prevent it from shaking during the operation and affecting the operation.

[0052] The present invention also proposes a balloon dilatation catheter, which includes a mastoid balloon. The specific structure of the mastoid balloon refers to the above-mentioned embodiment. Since the balloon dilatation catheter proposed by the present invention includes all schemes of all embodiments of the above-mentioned mastoid balloon, it has at least the same technical effects as the above-mentioned mastoid balloon, which will not be elaborated here one by one.

[0053] In some embodiments of the present invention, the balloon dilatation catheter further comprises a catheter and a catheter seat; the catheter is provided with a filling channel and a guidewire cavity, the mastoid balloon is provided at the distal end of the catheter and communicates with the filling channel, the catheter seat is installed at the proximal end of the catheter, and the catheter seat is provided with a filling port and a guidewire port respectively communicated with the filling channel and the guidewire cavity of the catheter. Figure 1 The catheter seat may also be provided with a communication port communicating with the expandable body 20 of the mastoid balloon for injecting gas or liquid into the expandable body 20 .

[0054] In this embodiment, the catheter may include an inner tube and an outer tube arranged around the outer circumference of the inner tube. The gap between the outer tube and the inner tube is a filling channel, the inner lumen of the inner tube is a guide wire lumen, the distal end of the mastoid balloon is connected to the end of the inner tube, and the proximal end of the mastoid balloon is connected to the end of the outer tube.

[0055] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present description and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A mastoid balloon, characterized in that: include: balloon body; An expandable body is provided on the outer peripheral wall of the balloon body and extends along the length direction of the balloon body, the expandable body is provided with a fluid inlet for introducing fluid and a fluid channel connected to the fluid inlet, so that it can expand or contract under the action of the fluid; there are multiple expandable bodies, and the multiple expandable bodies are arranged at intervals along the circumference of the balloon body and can expand or contract individually; each of the expandable bodies includes an attachment section and an extension section connected to the attachment section, the attachment section is attached to the outer peripheral wall of the balloon body, the extension section is connected to the attachment section and is suitable for extending to the proximal end of the balloon dilation catheter, and the fluid inlet is provided at the proximal end of the extension section; as well as Multiple protrusions are provided on at least one of the expandable bodies and are used to prevent relative sliding between the balloon body and the target site.

2. The mastoid balloon according to claim 1, wherein: The protrusion is a hollow structure with a cavity, and the cavity of the protrusion is communicated with the fluid channel.

3. The mastoid balloon according to claim 1, wherein: The expandable body is an air bag or a liquid bag.

4. The mastoid balloon according to claim 3, wherein: The radial cross-section of the expandable body in the expanded state is circular, semicircular or trapezoidal.

5. The mastoid balloon according to claim 1, wherein: The length of the attachment section is the same as that of the balloon body, and a plurality of protrusions are arranged on the attachment section.

6. The mastoid balloon according to claim 1, wherein: The plurality of protrusions are spaced apart along the length direction of the expandable body.

7. A balloon dilatation catheter, characterized in that: include: a catheter having a filling channel and a guidewire lumen; The mastoid balloon according to any one of claims 1 to 6, which is provided at the distal end of the catheter and communicates with the filling channel; and The catheter seat is installed at the proximal end of the catheter. The catheter seat is provided with a filling port and a guidewire port which are respectively communicated with the filling channel and the guidewire cavity of the catheter.

8. The balloon dilatation catheter according to claim 7, wherein: The catheter includes an inner tube and an outer tube arranged around the outer circumference of the inner tube. The gap between the outer tube and the inner tube is the filling channel. The inner cavity of the inner tube is the guide wire cavity. The distal end of the mastoid balloon is connected to the end of the inner tube, and the proximal end of the mastoid balloon is connected to the end of the outer tube.

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