Nicking balloon dilatation catheter

Abstract

The utility model discloses a nick balloon dilatation catheter, and relates to the technical field of medical instruments, in particular to a nick balloon dilatation catheter which comprises a catheter body, a flexible shaft is arranged in the catheter body in a penetrating mode, the surface of the catheter body is fixedly connected with a flow guide tube in a sleeved mode, and a flow guide groove is formed in the surface of the flow guide tube. Through the arrangement of the catheter, the flow guide groove, the flow guide assembly and the like, after the catheter enters the designated position of the blood vessel through the flexible shaft, a worker enables the balloon to expand, and therefore the expansion assembly outside the balloon is driven to expand; at the moment, blood flows into a blood circulation cavity channel formed in the catheter through a flow guide groove formed in one side of the catheter and flows out of a flow guide groove formed in the other side of the catheter, so that the normal performance of the balloon dilatation catheter is ensured, and meanwhile, a blood circulation channel is arranged; therefore, the problem that blood flow is interrupted due to the fact that blood vessels are blocked after the balloon dilatation catheter is dilated is solved, the risk of complications caused by blood flow interruption is effectively reduced, and operability and safety of an operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a notched balloon dilation catheter. Background Technology

[0002] Medical devices refer to instruments, equipment, appliances, materials, or other articles used alone or in combination on the human body, including the necessary software. Their therapeutic effects on the human body, whether on the surface or inside, are not achieved through pharmacological, immunological, or metabolic means, but rather through auxiliary functions. During use, they are intended to achieve the following purposes: prevention, diagnosis, treatment, monitoring, and alleviation of diseases; diagnosis, treatment, monitoring, alleviation, and compensation for injuries or disabilities; research, replacement, and regulation of anatomical or physiological processes; pregnancy control.

[0003] Aortic stenosis (AS) is a type of heart disease. Percutaneous balloon aortic valvuloplasty is one of the more effective measures. The basic procedure is as follows: through interventional techniques, a balloon catheter is inserted into the stenotic area of ​​the aorta. The balloon is dilated to break up the junction, break up the calcified plaque, elongate the stiff leaflets, and enlarge the valve annulus.

[0004] A notched balloon dilation catheter is a commonly used device in the treatment of cardiovascular diseases. However, when using a traditional aortic balloon dilation catheter to treat lesions, the balloon dilation can easily obstruct blood flow, leading to interruption of blood flow and increasing the risk of complications, which can have a certain impact on the patient's health. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a notched balloon dilation catheter, which solves the problem mentioned in the background art where traditional aortic balloon dilation catheters easily obstruct blood flow during lesion treatment, leading to blood flow interruption and increasing the risk of complications, thus impacting the patient's health.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a notched balloon dilation catheter, comprising a catheter, a flexible shaft passing through the inside of the catheter, a guide tube fixedly sleeved on the surface of the catheter, a guide groove formed on the surface of the guide tube, a guide assembly provided on the surface of the catheter at the guide tube, a balloon in the middle of the guide tube, an expansion assembly provided in the middle of the guide tube near the balloon, multiple blood passages formed inside the guide tube near the flexible shaft, both ends of the blood passages being connected to the guide tube, and a fluid passage connected to the balloon formed inside the guide tube near the blood passages.

[0007] Optionally, the flow guiding assembly includes a drive shaft fixedly connected to a flexible shaft, and blades are fixedly connected to the surface of the drive shaft. The number of blades is several, and all the blades are located inside the flow guiding tube, with the blades on the side closer to the tube.

[0008] Optionally, the blade includes an incoming blade near the guide groove, a transition blade is fixedly connected to the side of the incoming blade away from the guide groove, and a guide blade is fixedly connected to the side of the transition blade away from the incoming blade. One side of the incoming blade, the transition blade and the guide blade are all fixedly connected to the surface of the drive shaft.

[0009] Optionally, the extension component includes a plurality of first conical segments, one end of which is fixedly connected to a straight segment, and the end of the straight segment away from the first conical segment is fixedly connected to a second conical segment, and the opposite ends of the first and second conical segments are both connected to the surface of the guide tube.

[0010] Optionally, a gap is left between one side of the impeller and the guide tube, and the number of guide grooves is four. The four guide grooves are formed in a rectangular array on the surface of the guide tube. One end of the fluid passage is connected to the balloon, and the other end of the fluid passage is connected to the conduit.

[0011] This invention provides a notched balloon dilation catheter, which has the following advantages:

[0012] 1. This notched balloon dilatation catheter, through the arrangement of the catheter, flexible shaft, guide tube, guide groove, and guide assembly, allows the balloon to expand after the catheter is inserted into the designated location in the blood vessel via the flexible shaft. This expansion causes the external expansion assembly of the balloon to expand, allowing blood to flow through the guide groove on one side of the guide tube into the blood passage within the guide tube and out through the guide groove on the other side. This device ensures the normal performance of the balloon dilatation catheter while providing a blood flow channel, thus avoiding the problem of blood flow interruption caused by vascular blockage after balloon dilatation. This effectively reduces the risk of complications caused by blood flow interruption, improving the operability and safety of the surgery. At the same time, the guide assembly accelerates the flow of blood through the blood passage, thereby increasing the rate of blood flow within the blood passage and further improving the continuous blood flow in the blood vessel. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 2 This is a partial cross-sectional view of the guide tube structure of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the flow guiding component of this utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the guide tube of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the extension component of this utility model;

[0019] Figure 6 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. Catheter; 2. Flexible shaft; 3. Guide tube; 4. Guide groove; 5. Guide assembly; 51. Drive shaft; 52. Paddle; 521. Flow vane; 522. Transition vane; 523. Guide vane; 6. Balloon; 7. Expansion assembly; 71. First conical section; 72. Straight section; 73. Second conical section; 8. Blood passage; 9. Fluid passage. Detailed Implementation

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0022] Please see Figures 1 to 6This utility model provides a technical solution: a notched balloon dilation catheter, including a catheter 1, a flexible shaft 2 passing through the inside of the catheter 1, a guide tube 3 fixedly sleeved on the surface of the catheter 1, the two ends of the guide tube 3 being the blood inlet end and the bleeding end, respectively, a guide groove 4 being formed on the surface of the guide tube 3, a guide component 5 being provided on the surface of the catheter 1 at the guide tube 3, a balloon 6 being provided in the middle of the guide tube 3, an expansion component 7 being provided in the middle of the guide tube 3 near the balloon 6, multiple blood passage channels 8 being formed inside the guide tube 3 near the flexible shaft 2, both ends of the blood passage channels 8 being connected to the guide tube 3, and a fluid passage channel 9 being formed inside the guide tube 3 near the blood passage channels 8 and connected to the balloon 6. When the catheter 1 enters the designated position in the blood vessel through the flexible shaft 2, the operator applies contrast fluid. The fluid is delivered to the inside of the balloon 6 through the fluid passage 9, forcing the balloon 6 to expand. This, in turn, causes the expansion component 7 on the outside of the balloon 6 to expand. At this time, blood flows into the blood passage 8 opened in the blood passage 3 through the drainage groove 4 on one side of the drainage tube 3 and flows out through the drainage groove 4 on the other side. This device ensures the normal performance of the balloon 6 dilation catheter 1 while setting up a blood flow channel, thereby avoiding the problem of blood flow interruption caused by the blockage of blood vessels after the balloon 6 dilation catheter 1 expands. This effectively reduces the risk of complications caused by blood flow interruption and improves the operability and safety of the operation. At the same time, the setting of the drainage component 5 accelerates the rate at which blood passes through the blood passage 8, further improving the continuous blood flow in the blood vessels.

[0023] The flow guiding assembly 5 includes a drive shaft 51 fixedly connected to the flexible shaft 2. There are two drive shafts 51, which are located at the blood inlet end and the bleeding end, respectively. One end of the flexible shaft 2 extends through the catheter 1 to the external catheter 1 pump to provide power to the drive shaft 51. A paddle 52 is fixedly connected to the surface of the drive shaft 51. There are several paddles 52, which are all located inside the flow guiding tube 3. The paddles 52 are located on the side closer to the catheter 1.

[0024] The paddle 52 includes a flow-facing blade 521 near the flow channel 4. A transition blade 522 is fixedly connected to the side of the flow-facing blade 521 away from the flow channel 4. A flow-guiding blade 523 is fixedly connected to the side of the transition blade 522 away from the flow-facing blade 521. One side of the flow-facing blade 521, the transition blade 522, and the flow-guiding blade 523 are all fixedly connected to the surface of the drive shaft 51. When the balloon 6 expands, the flexible shaft 2 can drive the drive shaft 51 to rotate, causing the paddle 52 on the surface of the drive shaft 51 to rotate. This allows blood to be transported from one end of the flow tube 3 through the blood passage 8 to the other end of the flow tube 3, thereby accelerating the rate at which blood passes through the blood passage 8 and further improving the sustainable flow of blood in the blood vessels.

[0025] The extension component 7 includes multiple first conical segments 71. One end of the first conical segment 71 is fixedly connected to a straight segment 72. The end of the straight segment 72 away from the first conical segment 71 is fixedly connected to a second conical segment 73. The opposite ends of the first conical segment 71 and the second conical segment 73 are both connected to the surface of the guide tube 3.

[0026] There is a gap between one side of the blade 52 and the guide tube 3. There are four guide grooves 4, which are arranged in a rectangular array on the surface of the guide tube 3. One end of the liquid passage 9 is connected to the balloon 6, and the other end of the liquid passage 9 is connected to the catheter 1.

[0027] In the description of this specification, the terms "connection", "installation", "fixing", "setting", etc. are interpreted in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. In such cases, those skilled in the art can understand the specific meaning of the above terms in this utility model or utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A score balloon dilation catheter comprising a catheter (1), characterized in that: The inside of the catheter (1) is provided with a soft shaft (2), the surface of the catheter (1) is fixedly sleeved with a flow guide pipe (3), the surface of the flow guide pipe (3) is provided with a flow guide groove (4), the surface of the catheter (1) at the flow guide pipe (3) is provided with a flow guide assembly (5), the middle part of the flow guide pipe (3) is provided with a balloon (6), the middle part of the flow guide pipe (3) close to the balloon (6) is provided with an expansion assembly (7), the inside of the flow guide pipe (3) close to the soft shaft (2) is provided with a plurality of blood passing cavities (8), both ends of the blood passing cavity (8) are communicated with the flow guide pipe (3), and the inside of the flow guide pipe (3) close to the blood passing cavity (8) is provided with a liquid passing cavity (9) communicated with the balloon (6).

2. The score balloon catheter of claim 1, wherein: The flow guide assembly (5) comprises a driving shaft (51) fixedly connected with the soft shaft (2), the surface of the driving shaft (51) is fixedly connected with a paddle (52), the number of the paddle (52) is several, and the plurality of paddles (52) are located in the inside of the flow guide pipe (3), and the side of the paddle (52) close to the catheter (1).

3. The score balloon catheter of claim 2, wherein: The paddle (52) comprises a flow meeting blade (521) close to the flow guide groove (4), the side, away from the flow guide groove (4), of the flow meeting blade (521) is fixedly connected with a transition blade (522), the side, away from the flow meeting blade (521), of the transition blade (522) is fixedly connected with a flow guide blade (523), and the side of the flow meeting blade (521), the transition blade (522) and the flow guide blade (523) is fixedly connected with the surface of the driving shaft (51).

4. The score balloon catheter of claim 1, wherein: The expansion assembly (7) comprises a plurality of first tapered sections (71), one end of the first tapered section (71) is fixedly connected with a flat section (72), the end, away from the first tapered section (71), of the flat section (72) is fixedly connected with a second tapered section (73), and the opposite ends of the first tapered section (71) and the second tapered section (73) are connected with the surface of the flow guide pipe (3).

5. The score balloon catheter of claim 2, wherein: The gap is left between the side of the paddle (52) and the flow guide pipe (3), the number of the flow guide groove (4) is four, the four flow guide grooves (4) are arranged in a rectangular array on the surface of the flow guide pipe (3), one end of the liquid passing cavity (9) is communicated with the balloon (6), and the other end of the liquid passing cavity (9) is communicated with the catheter (1).

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