Non-occlusive arterial dilation balloon

Abstract

The application discloses a non-blood flow blocking artery dilating balloon and belongs to the technical field of artery dilating balloons. The non-blood flow blocking artery dilating balloon comprises a catheter, and a balloon structure is fixedly installed on the catheter. After the balloon structure is placed, liquid can be filled into the supporting filling strip and the reinforcing support cylinder through the catheter, so that the hollow balloon can be supported, the hollow balloon is supported and reinforced by the reinforcing support cylinder at this time, and the hollow balloon can be prevented from collapsing during use. The reinforcing support cylinder is lifted at the same time, the two supporting columns are rotated and opened, the two supporting columns are connected into an integrated whole after being rotated and opened, the supporting columns at this time can cooperate with the reinforcing strip to support and reinforce the hollow balloon again, and the supporting stability of the hollow balloon can be ensured while the hollow balloon has sufficient space to allow blood flow.

Description

Technical Field

[0001] This application relates to the field of arterial dilation balloon technology, and more particularly to a non-blood flow blocking arterial dilation balloon. Background Technology

[0002] Aortic / pulmonary valve balloon dilation, which dilates the narrowed aortic / pulmonary valve with a balloon to improve hemodynamics, has become the preferred method for treating aortic / pulmonary valve stenosis due to its advantages of minimal invasiveness, rapid recovery, and few complications. Traditional balloon catheters, however, fill the vessel after inflation, blocking blood flow. Temporarily blocking arterial blood flow in critical areas can lead to serious complications such as myocardial ischemia and arrhythmias. Therefore, developing a balloon catheter that does not block blood flow but maintains vascular patency has potential clinical application value.

[0003] The prior art patent document with publication number CN201520992273 provides a non-blood flow blocking arterial dilation balloon, which allows blood flow through a pre-reserved channel on the catheter, thus keeping the blood vessel patency open.

[0004] Although the existing technical solutions mentioned above can allow blood flow and keep blood vessels patent by leaving a channel on the catheter, they still have the following drawbacks: although the existing technology can allow blood flow, its aperture is small and the blood flow is not satisfactory.

[0005] In view of this, we propose a non-blood flow blocking arterial dilation balloon. Summary of the Invention

[0006] Technical problems to be solved This invention addresses the technical problems existing in the prior art by providing a non-blood flow blocking arterial dilation balloon. Technical solution

[0007] A non-blood flow occlusion arterial dilation balloon includes a catheter on which a balloon structure is mounted and fixed. The balloon structure includes multiple supporting filling strips that are connected and fixed to the catheter. A hollow balloon is connected and fixed to the inner end of the multiple supporting filling strips. Multiple reinforcing support cylinders are connected and fixed to the inner wall of the hollow balloon. Two control tubes are installed inside the catheter. The two control tubes are used to pass the guidewire and inject liquid respectively. The hollow balloon has multiple reinforcing strips fixed to its inner wall. Each reinforcing strip and one end of the reinforcing support cylinder is rotatably connected to a support column. A plug-in column is slidably connected to the support column located on the reinforcing support cylinder. An abutment column is fixedly connected to the lower end of the plug-in column.

[0008] By adopting the above technical solution, after the balloon structure is placed, fluid can be introduced through the catheter from the support filling strip and the reinforcing support tube, thus inflating the hollow balloon. At this time, the reinforcing support tube supports and reinforces the hollow balloon, thus preventing the hollow balloon from collapsing during use. As the reinforcing support tube is inflated, it will cause the two support columns to rotate and open. When the two support columns rotate and open to be on the same axis, the abutment column can be inflated and extended. In this way, the abutment column can drive the insertion column inside the support column on the reinforcing support tube to be inserted into the support column on the reinforcing strip. In this way, the two support columns are connected as one unit. At this time, the support column can work with the reinforcing strip to further support and reinforce the hollow balloon. This ensures that the hollow balloon has sufficient space to allow blood flow while ensuring the stability of the hollow balloon.

[0009] Preferably, each of the multiple support columns has a sliding groove at its inner end, the other end of the insertion column is slidably connected to the sliding groove, the two support columns are rotatably connected, the inner end of the reinforcing support cylinder is fixedly connected to the conduit, and the support filling strip has an arc-shaped structure.

[0010] By adopting the above technical solution, the sliding groove design at the inner end of the support column can cooperate with the plug-in column to slide inside the sliding groove, thereby connecting the two support columns and thus stably supporting the hollow spherical balloon.

[0011] Preferably, the plug-in post includes a connecting rod, the lower end of which is fixedly connected to a rotating frame, an abutting rod is rotatably connected inside the rotating frame, the other end of which is fixedly connected to an abutting plate, the abutting plate is fixedly connected to the abutting post, and the connecting rod is slidably connected to a sliding groove.

[0012] By adopting the above technical solution, during the expansion of the abutment column, the abutment column drives the abutment rod to rotate via the abutment plate. At this time, the other end of the abutment rod rotates inside the rotating frame and abuts against the rotating frame. In this way, the rotating frame drives the insertion rod to insert into the sliding groove of the outer support column, thus achieving the connection and fixation of the two support columns. During the retraction process, the retraction of the abutment column will drive the abutment plate and the abutment rod to rotate. Subsequently, the abutment rod will rotate, causing the rotating frame and the insertion rod to slide out of the sliding groove of the outer support column. This design allows the various structures to rotate and retract during retraction, reducing the overall volume of the structure and facilitating removal from the patient's body.

[0013] Preferably, the lower end of the reinforcing support cylinder is connected and fixed with a liquid inlet frame, and the liquid inlet frame is connected and fixed with the conduit.

[0014] Preferably, the two rotatably connected support columns have different lengths.

[0015] By adopting the above technical solution, it is possible to facilitate the rotation, contraction, and expansion of the two support columns.

[0016] By adopting the above technical solution, the liquid inlet frame can facilitate the liquid inlet to the reinforcing support cylinder and the abutment column, and at the same time facilitate the installation and fixing of the support column.

[0017] Preferably, the plurality of the support columns are rotatably connected to the liquid inlet frame.

[0018] By adopting the above technical solution, the liquid inlet frame facilitates the installation of the support column.

[0019] Preferably, the abutment post has a folded structure, and the inner end of the abutment post is connected and fixed to the liquid inlet frame.

[0020] By adopting the above technical solution, the folded structure of the abutment column can abut against and drive the insertion column to move and insert into the sliding groove of another support column. When the balloon structure is removed, the folded structure can contract to drive the insertion column to contract from the sliding groove, thus avoiding the problem that the hollow balloon cannot contract.

[0021] Preferably, the auxiliary support structure includes an expansion bracket that is fixedly connected to both ends of the hollow balloon. One end of the expansion bracket and the support filling strip is fixedly connected to a liquid inlet block. A spring sheet is fixedly connected to the liquid inlet block located on the expansion bracket, and an abutment block is rotatably connected to the end of the spring sheet.

[0022] By adopting the above technical solution, during the balloon's fluid inlet expansion, the dilator stent also expands synchronously. The arc-shaped dilator stent, together with the support filler strip, can form an arched structure, thus stably supporting the hollow balloon and ensuring its stability after expansion. After the dilator stent expands, the spring on the fluid inlet block at its end will drive the abutment block to abut against the fluid inlet block on the support filler strip, thereby connecting the dilator stent and the support filler strip. This strengthens the support strength of the dilator stent and the support filler strip. Furthermore, during the subsequent contraction of the hollow balloon, the spring on the dilator stent and the abutment block can rotate, causing the two fluid inlet blocks to adhere to the catheter, thus ensuring that the overall volume of the balloon can be easily removed.

[0023] Preferably, the abutment block is placed at an angle, and one end of the abutment block abuts against the liquid inlet block on the support filling strip, and the other end of the expansion bracket is connected and fixed to the conduit. Both the expansion bracket and the spring sheet are arc-shaped.

[0024] By adopting the above technical solution, the inclined structure of the abutment block allows the spring sheet to drive the abutment block and the liquid inlet block on the support filling strip to rotate during the contraction of the hollow balloon.

[0025] Preferably, the end of the spring sheet is inclined, and the end of the spring sheet abuts against the other end of the abutment block, and there is a rotation limit between the spring sheet and the abutment block.

[0026] By adopting the above technical solution, the inclined structure at the end of the spring can limit the contact of the abutment block. Beneficial effects

[0027] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. After the balloon structure is placed, fluid can be introduced through a control tube inside the catheter from the support filling strip and the reinforcing support cylinder, thus supporting the hollow balloon. At this time, the reinforcing support cylinder supports and reinforces the hollow balloon, thus preventing the hollow balloon from collapsing during use. While the reinforcing support cylinder is supporting the balloon, it will also cause the two support columns to rotate and open, and the two support columns will connect as one unit. At this time, the support columns can work with the reinforcing strip to further support and reinforce the hollow balloon. In this way, the hollow balloon can be guaranteed to have sufficient space to allow blood flow while ensuring the support stability of the hollow balloon.

[0028] 2. In this invention, expansion is achieved through synchronous fluid inlet via an expansion stent. The arc-shaped expansion stent, together with the supporting filler strip, forms an arched structure, which stably supports the hollow balloon and ensures its stability after expansion. After the expansion stent has expanded, the spring on the fluid inlet block at its end will drive the abutment block to abut against the fluid inlet block on the supporting filler strip, thus connecting the expansion stent and the supporting filler strip. This strengthens the support strength of the expansion stent and the supporting filler strip. Furthermore, during the subsequent contraction of the hollow balloon, the spring on the expansion stent and the abutment block can rotate, causing the two fluid inlet blocks to adhere to the catheter, thus ensuring that the overall volume of the balloon can be easily removed. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a three-dimensional structure of a non-blood flow blocking arterial dilation balloon according to an embodiment of this application; Figure 2 This is a cross-sectional schematic diagram of a non-blood flow blocking arterial dilation balloon hollow balloon according to an embodiment of this application; Figure 3 This is a schematic diagram of a non-blood flow blocking arterial dilation balloon support column structure according to an embodiment of this application; Figure 4 This is a schematic diagram of a non-blood flow blocking arterial dilation balloon abutment column structure according to an embodiment of this application; Figure 5 This is a schematic diagram of a three-dimensional structure of a non-blood flow blocking arterial dilation balloon according to an embodiment of this application; Figure 6 This is a schematic diagram of a three-dimensional structure of a non-blood flow blocking arterial dilation balloon according to an embodiment of this application; Figure 7This is a schematic diagram of a three-dimensional structure of a non-blood flow blocking arterial dilation balloon according to an embodiment of this application.

[0030] The following are the labels in the diagram: 1. Catheter; 2. Balloon structure; 21. Supporting filler strip; 22. Hollow balloon; 23. Reinforcing support tube; 231. Inlet frame; 24. Reinforcing strip; 251. Sliding groove; 25. Support column; 26. Insertion column; 261. Connecting rod; 262. Rotating frame; 263. Abutment rod; 264. Abutment plate; 27. Abutment column; 3. Auxiliary support structure; 31. Expansion support; 32. Inlet block; 33. Spring; 34. Abutment block. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0033] The present application will be further described in detail below with reference to the accompanying drawings. Example

[0034] Reference Figures 1-4 This application discloses a non-blood flow occlusion arterial dilation balloon, including a catheter 1, on which a balloon structure 2 is mounted and fixed. The balloon structure 2 includes multiple supporting filling strips 21 connected and fixed to the catheter 1. A hollow balloon 22 is connected and fixed to the inner end of the multiple supporting filling strips 21. Multiple reinforcing support cylinders 23 are connected and fixed to the inner wall of the hollow balloon 22. Multiple reinforcing strips 24 are connected and fixed to the inner wall of the hollow balloon 22. A support column 25 is rotatably connected to the middle of the reinforcing strip 24 and one end of the reinforcing support cylinder 23. An insertion column 26 is slidably connected to the support column 25 located on the reinforcing support cylinder 23. An abutment column 27 is connected and fixed to the lower end of the insertion column 26. Two control tubes 4 are installed inside the catheter 1. The two control tubes 4 are used to pass guide wires and inject liquid respectively.

[0035] In this embodiment, after the balloon structure 2 is placed, fluid can be introduced through the catheter 1 from the support filling strip 21 and the reinforcing support cylinder 23, thus supporting the hollow balloon 22. At this time, the reinforcing support cylinder 23 supports and reinforces the hollow balloon 22, thus preventing the hollow balloon 22 from collapsing during use. As the reinforcing support cylinder 23 is supported, it will drive the two support columns 25 to rotate and open. When the two support columns 25 rotate and open to be on the same axis, the abutment column 27 can be filled with fluid and extended. In this way, the abutment column 27 can drive the insertion column 26 inside the support column 25 on the reinforcing support cylinder 23 to be inserted into the support column 25 on the reinforcing strip 24. Thus, the two support columns 25 are connected as one unit. At this time, the support column 25 can work with the reinforcing strip 24 to further support and reinforce the hollow balloon 22. In this way, the hollow balloon 22 can be guaranteed to have sufficient space to allow blood flow while ensuring the support stability of the hollow balloon 22.

[0036] Multiple support columns 25 have sliding grooves 251 at their inner ends. The other end of the plug-in column 26 is slidably connected to the sliding groove 251. Two support columns 25 are rotatably connected. The inner end of the reinforcing support cylinder 23 is connected and fixed to the conduit 1. The support filling strip 21 has an arc-shaped structure. The sliding groove 251 at the inner end of the support column 25 is designed to cooperate with the plug-in column 26 to slide inside the sliding groove 251, thereby connecting the two support columns 25 and thus stably supporting the hollow balloon 22.

[0037] Reference Figure 5 The insertion post 26 includes a connecting rod 261, with a rotating frame 262 fixedly connected to the lower end of the connecting rod 261. An abutment rod 263 is rotatably connected inside the rotating frame 262, and an abutment plate 264 is fixedly connected to the other end of the abutment rod 263. The abutment plate 264 is fixedly connected to the abutment post 27. The connecting rod 261 is slidably connected to the sliding groove 251. The two rotatably connected support posts 25 have different lengths. During the expansion of the abutment post 27, the abutment post 27 drives the abutment rod 263 to rotate via the abutment plate 264. At this time, the other end of the abutment rod 263 rotates inside the rotating frame 262 and... The rotating frame 262 abuts against the support, causing the connecting rod 261 to insert into the sliding groove 251 of the outer support column 25. This connects and fixes the two support columns 25. During storage, the retraction of the abutting column 27 causes the abutting plate 264 and the abutting rod 263 to rotate. Subsequently, the abutting rod 263 rotates, causing the rotating frame 262 and the connecting rod 261 to slide out of the sliding groove 251 of the outer support column 25. This design allows the various structures to rotate and be stored during retraction, reducing the overall volume of the structure and making it easier to remove from the patient. Example

[0038] Reference Figure 3This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The lower end of the reinforcing support cylinder 23 is connected and fixed with a liquid inlet frame 231. The liquid inlet frame 231 is connected and fixed with the conduit 1. The liquid inlet frame 231 can facilitate the liquid inlet of the reinforcing support cylinder 23 and the abutment column 27, and at the same time facilitate the installation and fixing of the support column 25.

[0039] Multiple support columns 25 are rotatably connected to the liquid inlet frame 231, which facilitates the installation of the support columns 25.

[0040] Reference Figure 4 The abutment column 27 has a folded structure. The inner end of the abutment column 27 is connected and fixed to the liquid inlet frame 231. The folded structure of the abutment column 27 can abut against and drive the insertion column 26 to move and insert into the sliding groove 251 of another support column 25. When the balloon structure 2 is removed, its folded structure can contract and drive the insertion column 26 to contract from the sliding groove 251, avoiding the problem that the hollow balloon 22 cannot contract.

[0041] Reference Figure 6 and Figure 7 The auxiliary support structure 3 includes an expansion bracket 31 fixedly connected to both ends of the hollow balloon 22. An inlet block 32 is fixedly connected to one end of both the expansion bracket 31 and the support filling strip 21. A spring piece 33 is fixedly connected to the inlet block 32 located on the expansion bracket 31. An abutment block 34 is rotatably connected to the end of the spring piece 33. During the expansion of the balloon structure 2, the expansion bracket 31 also expands synchronously. The arc-shaped expansion bracket 31, together with the support filling strip 21, can form an arched structure, thus stably supporting the hollow balloon 22 and ensuring the expansion of the hollow balloon 22. After the expansion stent 31 is expanded, the spring piece 33 on the inlet block 32 at its end will drive the abutment block 34 to abut against the inlet block 32 on the support filling strip 21. This allows the expansion stent 31 to connect with the support filling strip 21, thus strengthening the support strength of the expansion stent 31 and the support filling strip 21. Furthermore, during the subsequent contraction of the hollow balloon 22, the spring piece 33 and the abutment block 34 on the expansion stent 31 can rotate and drive the two inlet blocks 32 to adhere to the catheter 1, thus ensuring that the overall volume of the balloon can be easily removed.

[0042] The abutment block 34 is placed at an angle, and one end of the abutment block 34 abuts against the liquid inlet block 32 on the support filling strip 21. The other end of the expansion bracket 31 is connected and fixed to the conduit 1. Both the expansion bracket 31 and the spring piece 33 are arc-shaped. The angled structure of the abutment block 34 allows the spring piece 33 to drive the abutment block 34 and the liquid inlet block 32 on the support filling strip 21 to rotate during the contraction of the hollow balloon 22.

[0043] The end of the spring piece 33 is inclined, and the end of the spring piece 33 abuts against the other end of the abutment block 34. There is a rotation limit between the spring piece 33 and the abutment block 34. The inclined structure of the end of the spring piece 33 can abut against and limit the abutment block 34.

[0044] The implementation principle of a non-blood flow occlusion arterial dilation balloon in this application embodiment is as follows: After the balloon structure 2 is placed, fluid can be introduced through a control tube inside the catheter 1 from the support filling strip 21 and the reinforcing support cylinder 23, thus inflating the hollow balloon 22. At this time, the reinforcing support cylinder 23 supports and reinforces the hollow balloon 22. Simultaneously, the dilation stent 31 also expands by introducing fluid. The arc-shaped dilation stent 31, together with the support filling strip 21, can form an arched structure, thus stably supporting the hollow balloon 22 and ensuring the stability of the hollow balloon 22 after expansion. After the stent 31 expands, the spring piece 33 on the liquid inlet block 32 at its end will drive the abutment block 34 to abut against the liquid inlet block 32 on the support filling strip 21. This connects the expansion stent 31 with the support filling strip 21, thereby strengthening the support strength of the expansion stent 31 and the support filling strip 21 and preventing the hollow balloon 22 from collapsing during use. Simultaneously, the reinforcement support cylinder 23 expands, causing the two support columns 25 to rotate and open. As the two support columns 25 rotate and open until they are on the same axis, the abutment column 27 can be filled with liquid and extend. Thus, the abutment column 27 abuts against... The disc 264 drives the abutment rod 263 to rotate. At this time, the other end of the abutment rod 263 rotates inside the rotating frame 262 and abuts against the rotating frame 262. In this way, the rotating frame 262 drives the insertion rod 261 to insert into the sliding groove 251 of the outer support column 25. This achieves the connection and fixation of the two support columns 25 into one unit. At this time, the support column 25 can work with the reinforcing strip 24 to further support and reinforce the hollow balloon 22. This ensures that the hollow balloon 22 has sufficient space to stably allow blood flow. After the hollow balloon 22 is used, it can be inhaled through the catheter 1. When column 27 contracts, it causes the abutment plate 264 and abutment rod 263 to rotate. Subsequently, the abutment rod 263 rotates, causing the rotating frame 262 and the insertion rod 261 to slide out of the sliding groove 251 of the outer end of the support column 25. This design allows the various structures to rotate and retract during contraction, reducing the overall volume of the structure. At the same time, the support filling strip 21 and expansion bracket 31 also contract. During the contraction process, the spring 33 and abutment block 34 can rotate and cause the two liquid inlet blocks 32 to adhere to the catheter 1, reducing the volume. In this way, the hollow balloon 22 can contract and be removed with the catheter 1.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A non-blood flow blocking arterial dilation balloon, characterized in that: Includes a catheter (1), on which a balloon structure (2) is fixedly installed, on which an auxiliary support structure (3) is fixedly installed, and inside the catheter (1) are two control tubes (4). The balloon structure (2) includes multiple support filling strips (21) that are connected and fixed to the catheter (1), and hollow balloons (22) are connected and fixed to the inner ends of the multiple support filling strips (21). Multiple reinforcing support cylinders (23) are connected and fixed to the inner wall of the hollow balloons (22). The hollow balloon (22) has multiple reinforcing strips (24) fixedly connected to its inner wall. The middle part of the reinforcing strip (24) and one end of the reinforcing support cylinder (23) are rotatably connected to a support column (25). A plug-in column (26) is slidably connected to the support column (25) located on the reinforcing support cylinder (23). An abutment column (27) is fixedly connected to the lower end of the plug-in column (26).

2. The non-blood flow occlusion arterial dilation balloon according to claim 1, characterized in that: Each of the multiple support columns (25) has a sliding groove (251) at its inner end. Two support columns (25) are rotatably connected. The inner end of the reinforced support cylinder (23) is connected and fixed to the conduit (1). The support filling strip (21) has an arc-shaped structure.

3. The non-blood flow occlusion arterial dilation balloon according to claim 2, characterized in that: The plug-in post (26) includes a connecting rod (261), the lower end of which is fixedly connected to a rotating frame (262), and the rotating frame (262) is rotatably connected to an abutting rod (263). The other end of the abutting rod (263) is fixedly connected to an abutting plate (264), which is fixedly connected to the abutting post (27). The connecting rod (261) is slidably connected to the sliding groove (251).

4. The non-blood flow occlusion arterial dilation balloon according to claim 3, characterized in that: The two rotatingly connected support columns (25) have different lengths.

5. The non-blood flow occlusion arterial dilation balloon according to claim 4, characterized in that: The lower end of the reinforced support cylinder (23) is connected and fixed with a liquid inlet frame (231), and the liquid inlet frame (231) is connected and fixed with the conduit (1).

6. The non-blood flow occlusion arterial dilation balloon according to claim 4, characterized in that: Among them, several The support column (25) is rotatably connected to the liquid inlet frame (231), the abutment column (27) has a folded structure, and the inner end of the abutment column (27) is connected and fixed to the liquid inlet frame (231).

7. The non-blood flow occlusion arterial dilation balloon according to claim 1, characterized in that: The auxiliary support structure (3) includes an expansion bracket (31) that is fixed to both ends of the hollow balloon (22). One end of the expansion bracket (31) and the support filling strip (21) is fixed to a liquid inlet block (32). A spring piece (33) is fixed to the liquid inlet block (32) located on the expansion bracket (31). An abutment block (34) is rotatably connected to the end of the spring piece (33).

8. The non-blood flow occlusion arterial dilation balloon according to claim 7, characterized in that: The abutment block (34) is placed in an inclined structure, and one end of the abutment block (34) abuts against the liquid inlet block (32) on the support filling strip (21). The other end of the expansion bracket (31) is connected and fixed to the conduit (1). Both the expansion bracket (31) and the spring piece (33) are arc-shaped.

9. The non-blood flow occlusion arterial dilation balloon according to claim 8, characterized in that: The end of the spring piece (33) is inclined, and the end of the spring piece (33) abuts against the other end of the abutment block (34). There is a rotation limit between the spring piece (33) and the abutment block (34).

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