Mastoid perfusion balloon and balloon dilatation catheter

Abstract

The invention discloses a perfusion mastoid balloon and a balloon dilatation catheter, and relates to the technical field of medical instruments. The perfusion mastoid balloon comprises a balloon main body, mastoids and a fluid channel, the mastoid process and the balloon main body are integrally formed or separately formed; the fluid channel is formed in the peripheral wall of the balloon body and extends in the length direction of the balloon body to allow liquid to pass through, and the size of the fluid channel in the radial direction of the balloon body is smaller than or equal to the size of the mastoid in the radial direction of the balloon body. The structure of the perfusion mastoid balloon is improved, the expansion time of the perfusion mastoid balloon is effectively prolonged, a narrow area can be better expanded, and meanwhile blood vessel blockage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an infusion papillary balloon and a balloon dilation catheter. Background Art

[0002] Most of the balloon parts of balloon dilation catheters are smooth balloon bodies. During the treatment process, when the balloon is pressurized, due to the hard calcified lesions, the balloon is easily squeezed by the calcified lesions and deviated from the position of the calcified lesions during the pressurization of the balloon, and the balloon is squeezed to the normal blood vessel. For this reason, in recent years, a papillary balloon with multiple papillary points distributed on the outer surface of the balloon to increase the friction has been introduced. The papilla can play an anti-slip role and prevent the balloon from deviating from the position of the calcified lesions.

[0003] However, there is still a problem with the existing papillary balloons, that is, when the papillary balloon expands, it will block the blood vessel. Therefore, the papillary balloon is only allowed to expand for a very short time during use to prevent tissue damage caused by long-term occlusion. However, the expansion time of the papillary balloon is too short, and the effect of dilating the stenotic area is not good, and the treatment effect of calcified lesions is generally average. Summary of the Invention

[0004] The main object of the present invention is to provide an infusion papillary balloon and a balloon dilation catheter, aiming to extend the inflation time of the papillary balloon to improve the effect of dilating the stenotic area and avoid blocking the blood vessel at the same time.

[0005] To achieve the above object, the present invention provides an infusion papillary balloon, comprising: A balloon body; Papillae, integrally formed or separately formed with the balloon body; and A fluid channel, formed on the outer peripheral wall of the balloon body and extending along the length direction of the balloon body to allow liquid to pass through, and the size of the fluid channel in the radial direction of the balloon body is less than or equal to the size of the papillae in the radial direction of the balloon body.

[0006] Optionally, the papillae include a plurality of first protrusion groups and a plurality of second protrusion groups. The plurality of first protrusion groups are arranged on the balloon body at intervals along the circumferential direction of the balloon body and are parallel to each other, and at least two second protrusion groups are provided between two adjacent first protrusion groups; Each first protrusion group includes several anti-slip protrusions arranged at intervals along the length direction of the balloon body, and each second protrusion group includes several support protrusions arranged at intervals along the length direction of the balloon body. The height of the support protrusions is lower than or equal to the height of the anti-slip protrusions. A cover plate is provided on the outer end of each second protrusion group, and the cover plate and the two adjacent second protrusion groups form the fluid channel.

[0007] Optionally, the papillae include a plurality of papilla groups which are circumferentially spaced apart on the balloon body along the circumferential direction of the balloon body, and each of the papilla groups includes a plurality of anti-slip protrusions which are spaced apart along the length direction of the balloon body; At least one of the fluid channels is provided between two adjacent papilla groups, and each of the fluid channels includes two opposite side walls and a top wall provided on the two side walls. The side walls are composed of a plurality of support columns or support strips, and the top wall is composed of a plurality of top plates.

[0008] Optionally, the cross-sectional shape of the inner cavity of the fluid channel in the radial direction of the balloon body is trapezoidal, circular or square.

[0009] Optionally, the cover plate is made of flexible metal or polymer material.

[0010] Optionally, the papillae are provided on the outer surface of the balloon by a dispensing process.

[0011] Optionally, a tip adapted to pierce the blood vessel wall is provided at the outer end of the anti-slip protrusion.

[0012] To achieve the above object, the present invention further provides a balloon dilation catheter, including the above-mentioned perfusion papilla balloon, and the perfusion papilla balloon includes: A balloon body; Papillae, integrally formed or separately formed with the balloon body; and Fluid channels formed on the outer peripheral wall of the balloon body and extending along the length direction of the balloon body to allow liquid to pass through, and the size of the fluid channels in the radial direction of the balloon body is less than or equal to the size of the papillae in the radial direction of the balloon body.

[0013] Optionally, the balloon dilation catheter further includes a catheter and a catheter hub. The distal end of the catheter is communicated with the perfusion papilla balloon, the proximal end of the catheter is communicated with the catheter hub, and the catheter hub is provided with a filling port and a guide wire port which are respectively communicated with the filling channel and the guide wire cavity of the catheter.

[0014] Optionally, the catheter includes an inner tube and an outer tube. The outer tube surrounds the inner tube and forms the filling channel. The inner cavity of the inner tube forms the guide wire cavity. The distal end of the perfusion papilla balloon is connected to the end of the inner tube, the proximal end of the perfusion papilla balloon is connected to the end of the outer tube, and the proximal end of the outer tube is connected to the catheter hub.

[0015] In the technical solution of the present invention, the perfusion mastoid balloon includes a balloon body, a mastoid, and a fluid channel; the mastoid is integrally formed or separately formed with the balloon body; the fluid channel is formed on the outer peripheral wall of the balloon body and extends along the length direction of the balloon body to allow liquid to pass through, and the size of the fluid channel in the radial direction of the balloon body is less than or equal to the size of the mastoid in the radial direction of the balloon body. It can be understood that the present invention improves the structure of the perfusion mastoid balloon. By providing a fluid channel on the outer surface of the balloon body, blood flow is allowed to pass through during inflation, avoiding blood vessel blockage. And since the size of the fluid channel in the radial direction of the balloon body is less than or equal to the size of the mastoid in the radial direction of the balloon body, the fluid channel can maintain a flowing state without being squeezed by the blood vessel wall for a long time, which effectively extends the inflation time of the perfusion mastoid balloon, can better dilate the stenosis area, and improves the treatment effect of calcified lesions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the perfusion mastoid balloon of the present invention; Figure 2 It is a front view of an embodiment of the perfusion mastoid balloon of the present invention; Figure 3 It is Figure 2 The cross-sectional view taken along line A-A in

[0018] Explanation of the reference numerals in the drawings: 10. Balloon body; 20. Mastoid; 30. Fluid channel; 210. First convex group; 220. Second convex group; 211. Anti-slip convex; 221. Support convex; 301. Cover plate.

[0019] The realization of the object, functional features, and advantages of the present invention will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] 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 positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will change accordingly.

[0022] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] In addition, the descriptions involving "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 specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. The meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. The technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0024] The present invention provides an infusion mastoid balloon.

[0025] Referring to Figures 1 to 3 , in an embodiment of the present invention, the infusion mastoid balloon includes a balloon body 10, a mastoid 20, and a fluid channel 30; the mastoid 20 is integrally formed or separately formed with the balloon body 10; the fluid channel 30 is formed on the outer peripheral wall of the balloon body 10 and extends along the length direction of the balloon body 10 to allow liquid to pass through, and the size of the fluid channel 30 in the radial direction of the balloon body 10 is less than or equal to the size of the mastoid 20 in the radial direction of the balloon body 10. Specifically, when the balloon expands, the fluid channel 30 provides a path for blood to flow through the infusion mastoid balloon, and the blood can be supplied to the downstream area of the balloon, preventing the human tissue from being partially damaged due to long-term occlusion of blood vessels.

[0026] In this embodiment, the mastoid process 20 may include a plurality of protrusions disposed on the outer surface of the balloon through processes such as dispensing. The sizes of the protrusions may be the same or different. The plurality of protrusions may be evenly distributed on the outer surface of the balloon or arranged irregularly on the outer surface of the balloon, which is not limited herein.

[0027] The fluid channel 30 may be formed by some relatively low protrusions in the mastoid process 20 and several cover plates 301 or covering strips disposed on these protrusions, or may also be a structure independently disposed of the mastoid process 20 and formed by enclosing a side plate and a top plate. Any structure that can allow blood flow to pass through during the continuous expansion after the mastoid process 20 of the balloon penetrates into the blood vessel wall to avoid blood vessel blockage is acceptable, which is not limited herein.

[0028] In this embodiment, the cross-sectional shape of the inner cavity of the fluid channel 30 in the radial direction of the balloon body 10 is trapezoidal, circular, square, etc., which is not limited herein.

[0029] It can be understood that the present invention improves the structure of the perfusion mastoid balloon. By providing the fluid channel 30 on the outer surface of the balloon body 10 to allow blood flow to pass through during inflation, blood vessel blockage is avoided. Moreover, since the size of the fluid channel 30 in the radial direction of the balloon body 10 is less than or equal to the size of the mastoid process 20 in the radial direction of the balloon body 10, the fluid channel 30 can maintain a flowing state without being squeezed by the blood vessel wall for a long time, which effectively extends the inflation time of the perfusion mastoid balloon, can better dilate the stenosis area, and improves the treatment effect of calcified lesions.

[0030] Refer to Figures 1 to 3, in one embodiment, the mastoid 20 may include a plurality of first protrusion groups 210 and a plurality of second protrusion groups 220. The plurality of first protrusion groups 210 are arranged at intervals along the circumferential direction of the balloon body 10 and are parallel to each other on the balloon body 10. At least two second protrusion groups 220 are provided between two adjacent first protrusion groups 210, and the plurality of second protrusion groups 220 may also be arranged parallel to each other; each first protrusion group 210 includes a plurality of anti-slip protrusions 211 arranged at intervals along the length direction of the balloon body 10, and the plurality of anti-slip protrusions 211 in each group may be on the same straight line. Each second protrusion group 220 includes a plurality of support protrusions 221 arranged at intervals along the length direction of the balloon body 10, and the plurality of support protrusions 221 in each group may also be on the same straight line. The height of the support protrusions 221 is lower than or equal to the height of the anti-slip protrusions 211. A cover plate 301 is provided on the outer end of each second protrusion group 220, and the cover plate 301 and the two adjacent second protrusion groups 220 form a fluid channel 30. Thus, when the balloon expands, the fluid channel 30 can allow blood to continue flowing, allowing a longer balloon dilation time, and further reducing the risk of ischemia and tissue damage. In addition, this structure combining the mastoid 20 and the fluid channel 30 makes full use of the mastoid 20 structure of the perfusion mastoid balloon itself, and sets some low mastoids 20 as the side walls or support columns of the fluid channel 30, which helps to reduce the manufacturing difficulty and the cost is lower.

[0031] In this embodiment, the cover plate 301 may be made of flexible metal or polymer material to avoid damaging the blood vessel wall during the balloon dilation process.

[0032] In another embodiment, the mastoid 20 may include a plurality of mastoid groups. The plurality of mastoid groups are arranged at intervals along the circumferential direction of the balloon body 10 on the balloon body 10. Each mastoid group includes a plurality of anti-slip protrusions 211 arranged at intervals along the length direction of the balloon body 10; at least one fluid channel 30 is provided between two adjacent mastoid groups. Each fluid channel 30 includes opposite side walls and a top wall provided on the two side walls. The side walls are composed of a plurality of support columns or support bars, and the top wall is composed of a plurality of top plates. Thus, the specific structure of the fluid channel 30 can be set according to requirements, which can achieve better stability, can better extend the inflation time of the perfusion mastoid balloon, further improve the effect of dilating the stenotic area, and at the same time has a better effect of avoiding blood vessel blockage.

[0033] In this embodiment, the fluid channel 30 is a structure independently arranged from the mastoid 20. The side walls of the fluid channel 30 are not directly composed of low mastoids 20. The side walls may be structures with a similar shape and size to the low mastoids 20 but different in material or process, or may be composed of a plurality of support columns or a plurality of support bars. The top plates forming the top wall may be substantially the same as or different from the structure of the cover plate 301 in the foregoing embodiment, which is not limited herein.

[0034] Refer toFigures 1 to 3 In one embodiment, a tip adapted to penetrate the blood vessel wall may be provided at the outer end of the anti-slip protrusion 211. Such a setting can enable the perfusion papillary balloon to have a better anti-slip effect, so that it can be stably maintained at the target treatment position during the expansion process, which helps to further improve the treatment effect.

[0035] When the perfusion papillary balloon is in use, first deliver the balloon in a folded and contracted state to the lesion site, and then fill the balloon with fluid to make the balloon expand. During the expansion of the balloon, the papilla 20 can pierce into the blood vessel wall to prevent the balloon from sliding; the blood flow channel provides a path for blood to flow through the balloon, and the blood can be supplied to the downstream area of the balloon to prevent partial damage to human tissues due to long-term occlusion of the blood vessel. After the treatment is completed, when the perfusion papillary balloon needs to be withdrawn from the body, the balloon is depressurized to make it contract, and then the perfusion papillary balloon can be withdrawn from the body.

[0036] The present invention also provides a balloon dilation catheter, which includes a perfusion papillary balloon. The specific structure of the perfusion papillary balloon refers to the above embodiments. Since the balloon dilation catheter provided by the present invention includes all the solutions of all the above embodiments of the perfusion papillary balloon, therefore, it has at least the same technical effects as the above perfusion papillary balloon, and will not be elaborated one by one here.

[0037] In one embodiment, the balloon dilation catheter may further include a catheter and a catheter hub. The distal end of the catheter is communicated with the perfusion papillary balloon, and the proximal end of the catheter is communicated with the catheter hub. The catheter hub can be a Y-shaped hollow structure, and the catheter hub is provided with a filling port and a guide wire port respectively communicated with the filling channel and the guide wire cavity of the catheter. In this way, it is convenient for medical staff to deliver the balloon to the target treatment position, and the operation of filling the balloon is more convenient.

[0038] In this embodiment, the catheter may include an inner tube and an outer tube. The outer tube surrounds the inner tube and forms a filling channel. The filling channel is communicated with the inner cavity of the balloon. The inner tube passes through the balloon, and the inner cavity of the inner tube forms a guide wire cavity. The distal end of the perfusion papillary balloon is connected to the end of the inner tube, and the proximal end of the perfusion papillary balloon is connected to the end of the outer tube. The proximal end of the outer tube is connected to the catheter hub. The structure of this perfusion papillary balloon dilation catheter is relatively simple, more convenient for manufacturing and processing, and has a lower cost.

[0039] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A mastoid balloon perfusion device, characterized in that: include: The balloon body; A mastoid, formed integrally with the balloon body or formed separately; as well as A fluid channel is formed on the outer peripheral wall of the balloon body and extends along the length direction of the balloon body to allow liquid to pass through, and the radial dimension of the fluid channel is smaller than or equal to the radial dimension of the mastoid process of the balloon body.

2. The perfusion mastoid balloon according to claim 1, characterized in that: The mastoid comprises a plurality of first protrusion groups and a plurality of second protrusion groups, wherein the plurality of first protrusion groups are arranged on the balloon body at intervals along the circumference of the balloon body and parallel to each other, and at least two second protrusion groups are arranged between two adjacent first protrusion groups; The first protrusion groups each include a plurality of anti-slip protrusions spaced apart along the length direction of the balloon body, and the second protrusion groups each include a plurality of support protrusions spaced apart along the length direction of the balloon body, wherein the height of the support protrusions is lower than or equal to the height of the anti-slip protrusions, and a cover plate is provided on the outer end of each group of the second protrusion groups, and the cover plate and two adjacent second protrusion groups constitute the fluid channel.

3. The perfusion mastoid balloon according to claim 1, characterized in that: The mastoid comprises a plurality of mastoid groups, and the plurality of mastoid groups are arranged on the balloon body at intervals along the circumference of the balloon body, and each of the mastoid groups comprises a plurality of anti-slip protrusions arranged at intervals along the length direction of the balloon body; At least one fluid channel is provided between two adjacent mastoid groups, and each fluid channel includes two side walls arranged opposite to each other and a top wall arranged on the two side walls, wherein the side walls are composed of a plurality of support columns or support bars, and the top wall is composed of a plurality of top plates.

4. The perfusion mastoid balloon according to claim 2 or 3, characterized in that: The cross-sectional shape of the inner cavity of the fluid channel in the radial direction of the balloon body is trapezoidal, circular or square.

5. The perfusion mastoid balloon according to claim 2, characterized in that: The cover plate is made of flexible metal or polymer material.

6. The perfusion mastoid balloon according to claim 1, characterized in that: The mastoid is arranged on the outer surface of the balloon by a glue dispensing process.

7. The perfusion mastoid balloon according to claim 2 or 3, characterized in that: The outer end of the anti-slip protrusion is provided with a sharp portion suitable for piercing the blood vessel wall.

8. A balloon dilatation catheter, characterized in that: It comprises the perfusion mastoid balloon as described in any one of claims 1 to 7.

9. The balloon dilatation catheter according to claim 8, characterized in that: The balloon dilatation catheter also includes a catheter and a catheter seat, the distal end of the catheter is connected to the perfusion mastoid balloon, the proximal end of the catheter is connected to the catheter seat, and the catheter seat is provided with a filling port and a guidewire port respectively connected to the filling channel and guidewire cavity of the catheter.

10. The balloon dilatation catheter according to claim 9, characterized in that: The catheter includes an inner tube and an outer tube, the outer tube is arranged around the inner tube and forms the filling channel, the inner cavity of the inner tube forms the guide wire cavity, the distal end of the perfusion mastoid balloon is connected to the end of the inner tube, the proximal end of the perfusion mastoid balloon is connected to the end of the outer tube, and the proximal end of the outer tube is connected to the catheter seat.

Images