Adjustable balloon catheter in aorta

Abstract

The utility model provides an adjustable in-aorta balloon catheter, which relates to the technical field of balloon catheters and comprises a main balloon, a control balloon and a catheter, an air passage is arranged in the catheter, and the main balloon and the control balloon are distributed along the axial direction of the catheter. The control balloons are distributed at the near end and / or the far end of the main balloon in the axial direction of the catheter, the main balloon and the control balloons are both communicated with the air channel and are configured to be independently inflated and deflated through the air channel, and when the main balloon and the control balloons are both in a full state, the diameter of the control balloons is larger than that of the main balloon. The adjustable balloon catheter in the aorta can solve the problems that a traditional balloon catheter is limited in cardiac displacement, low in systemic circulation perfusion amount and the like.

Description

Technical Field

[0001] This utility model relates to the field of balloon catheter technology, and in particular to an adjustable intra-aortic balloon catheter. Background Technology

[0002] Intraatrial balloon pump (IABP) involves inserting a catheter with a balloon into the proximal end of the descending aorta. During systole, the balloon rapidly deflates, causing a momentary drop in aortic pressure. This reduces cardiac ejection resistance, decreases cardiac afterload, increases cardiac output, and decreases myocardial oxygen consumption. During diastole, as the aortic valve closes, the balloon rapidly inflates, pumping blood to both proximal and distal sides of the aorta, increasing diastolic pressure at the aortic root and enhancing coronary blood flow and myocardial oxygen supply. Although IABP has been around for over 20 years, it still faces challenges such as limited increase in cardiac output and low systemic perfusion. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable intra-aortic balloon catheter that can solve the problems of limited cardiac output and low systemic perfusion of traditional balloon catheters.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This invention provides an adjustable intra-aortic balloon catheter, comprising a main balloon, a control balloon, and a catheter. The catheter has an airway. The main balloon and the control balloon are distributed along the axial direction of the catheter, and the control balloon is distributed along the axial direction of the catheter at the proximal and / or distal end of the main balloon. Both the main balloon and the control balloon are connected to the airway and are configured to be independently inflated and deflated through the airway. When both the main balloon and the control balloon are inflated, the diameter of the control balloon is larger than the diameter of the main balloon.

[0006] Furthermore, along the axial direction of the catheter, the length of the main balloon is greater than the length of the control balloon.

[0007] Furthermore, the control balloon is configured as two balloons, which are distributed one-to-one along the axial direction of the catheter at the proximal and distal ends of the main balloon.

[0008] Furthermore, the airway includes a main airway, a first auxiliary airway, and a second auxiliary airway that are independently configured. The main balloon is connected to the main airway, and one of the two control balloons is connected to the first auxiliary airway, while the other is connected to the second auxiliary airway.

[0009] Furthermore, it also includes an endotracheal assembly connected to the duct, the endotracheal assembly being used to purge or release air from the main airway, the first auxiliary airway, and the second auxiliary airway.

[0010] Furthermore, the tracheal assembly includes a main trachea, a first auxiliary trachea, and a second auxiliary trachea. The first ends of the main trachea, the first ends of the first auxiliary trachea, and the second auxiliary trachea are connected, and the first end of the main trachea is connected to the main airway. The first end of the first auxiliary trachea is connected to the first auxiliary airway, and the first end of the second auxiliary trachea is connected to the second auxiliary airway. The second ends of the main trachea, the first auxiliary trachea, and the second auxiliary trachea are all connected to an air source.

[0011] Furthermore, the inner diameter of the main air tube is larger than the inner diameters of the first auxiliary air tube and the second auxiliary air tube.

[0012] Furthermore, the catheter has a threading hole, which is provided independently of the airway.

[0013] Furthermore, the main air passage, the first auxiliary air passage, and the second auxiliary air passage are arranged around the wire-threading hole.

[0014] Furthermore, it also includes a fixing sleeve, which is fitted over the outside of the conduit.

[0015] The adjustable intra-aortic balloon catheter provided by this invention can produce the following beneficial effects:

[0016] The adjustable intra-aortic balloon catheter provided by this utility model is provided with a control balloon. When the control balloon is distributed along the axial direction of the catheter at at least one end of the main balloon and is in an inflated state, the diameter of the control balloon is larger than the diameter of the main balloon.

[0017] When in use, the control balloon can be used in conjunction with the main balloon. For example, when the control balloon is placed proximally to the main balloon and implanted via the femoral artery, the control balloon proximally to the main balloon can be inflated in advance during cardiac systole before the main balloon deflates. This can reduce the amount of blood drawn back from below the aorta and increase cardiac output. When the control balloon is placed distally to the main balloon and implanted via the femoral artery, the control balloon distal to the main balloon can remain inflated during cardiac diastole before the main balloon inflates. This allows more blood squeezed out during the main balloon to flow towards the systemic circulation, increasing systemic perfusion.

[0018] Compared with existing technologies, the adjustable intra-aortic balloon catheter provided by this invention can solve the problems of limited cardiac output and low systemic perfusion of traditional balloon catheters. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural schematic diagram of an adjustable intra-aortic balloon catheter provided for an embodiment of this utility model;

[0021] Figure 2 A schematic diagram of the structure of an adjustable intra-aortic balloon catheter used during cardiac systole, provided for an embodiment of this utility model;

[0022] Figure 3 A schematic diagram of the structure of an adjustable intra-aortic balloon catheter used during cardiac diastole, provided for an embodiment of this utility model;

[0023] Figure 4 A cross-sectional view of a catheter provided in an embodiment of this utility model.

[0024] Icons: 1 - Main balloon; 2 - Control balloon; 3 - Catheter; 31 - Main airway; 32 - First auxiliary airway; 33 - Second auxiliary airway; 34 - Threading hole; 35 - Tip; 4 - Tracheal assembly; 41 - Main trachea; 42 - First auxiliary airway; 43 - Second auxiliary airway; 5 - Fixing cannula; 6 - Aortic arch; 7 - Luer connector; 8 - Cuff. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] This embodiment provides an adjustable intra-aortic balloon catheter, such as Figure 1 and Figure 2 As shown, it includes a main balloon 1, a control balloon 2, and a catheter 3. The catheter 3 has an airway. The main balloon 1 and the control balloon 2 are distributed along the axial direction of the catheter 3, and the control balloon 2 is distributed along the axial direction of the catheter 3 at the proximal and / or distal end of the main balloon 1. Both the main balloon 1 and the control balloon 2 are connected to the airway and are configured to be inflated and deflated independently through the airway. When both the main balloon 1 and the control balloon 2 are inflated, the diameter of the control balloon 2 is larger than the diameter of the main balloon 1.

[0030] It is understandable that the proximal end is the end of the control balloon 2 that is closer to the operator, and the distal end is the end of the control balloon 2 that is farther away from the operator.

[0031] The aforementioned adjustable intra-aortic balloon catheter includes a control balloon 2. The control balloon 2 is distributed along the axial direction of the catheter 3 at the proximal end of the main balloon 1 or at the distal end of the main balloon 1, or it can be distributed at both the proximal and distal ends of the main balloon 1. To provide a more detailed explanation of the use of the adjustable intra-aortic balloon catheter provided in the above embodiment, we will take the example of the control balloon 2 being distributed at both the proximal and distal ends of the main balloon 1 and implanted via the femoral artery:

[0032] During cardiac systole, such as Figure 2 As shown, before the main balloon 1 is deflated, the control balloon 2 at the proximal end of the main balloon 1 is inflated, while the control balloon 2 at the distal end of the main balloon 1 is kept deflated. Because the control balloon 2 at the proximal end of the main balloon 1 is opened in advance, the amount of blood drawn back from below the aorta is reduced, thus increasing cardiac output.

[0033] During diastole, when the main balloon 1 needs to be inflated, the control balloon 2 distal to the main balloon 1 is inflated in advance, while the control balloon 2 proximal to the main balloon 1 remains deflated. Figure 3As shown, this allows more of the blood squeezed out during the inflation of the main balloon 1 to flow towards the systemic circulation, increasing the systemic perfusion.

[0034] During diastole, when the main balloon 1 is inflated, the control balloon 2 distal to the main balloon 1 remains deflated, while the control balloon 2 proximal to the main balloon 1 is not completely deflated. Due to the incomplete deflation of the control balloon 2 proximal to the main balloon 1, the blood flow resistance in the systemic circulation direction increases. When the main balloon 1 is inflated, more blood squeezed out flows towards the upper limb circulation or coronary arteries, increasing the perfusion of the upper limb circulation and coronary arteries.

[0035] The above-mentioned implantation method is femoral artery implantation, that is, the tip 35 of catheter 3 is close to the aortic arch 6. When implanted via the axillary artery, the state of the control balloon 2 at the proximal end of the main balloon 1 and the control balloon 2 at the distal end of the main balloon 1 is the opposite of the above process.

[0036] Understandably, when both the proximal and distal control balloons of the main balloon 1 are in a contracted state, the aforementioned adjustable intra-aortic balloon catheter can be used in the same way as a traditional aortic balloon.

[0037] In a preferred embodiment, such as Figure 1 As shown, two control balloons 2 are configured, and the two control balloons 2 are distributed one-to-one along the axis of the catheter 3 at the proximal and distal ends of the main balloon 1.

[0038] In an optional implementation, the two control balloons 2 and the main balloon 1 can be set independently, each covering the outside of the catheter 3, forming a cavity that is not interconnected with the catheter 3 when inflated.

[0039] In an optional embodiment, the two control balloons 2 and the main balloon 1 can also be an integral structure, with a balloon membrane covering the outside of the catheter 3. Two segments of the balloon membrane are spaced apart along the axial direction of the catheter 3 and sealed to the outer surface of the catheter 3, so as to divide the balloon membrane into the main balloon 1 and two control balloons 2. When inflated, the main balloon 1 and the two control balloons 2 form a cavity that is not interconnected with the catheter 3.

[0040] In alternative implementations, such as Figure 1 As shown, along the axial direction of catheter 3, the length of the main balloon 1 is greater than the length of the control balloon 2.

[0041] In the above embodiments, the control balloon 2 only needs to be able to abut against the inner wall of the blood vessel when inflated. The axial dimension of the catheter 3 does not need to be too large, thus reducing the axial dimension of the balloon catheter operation area and making it more applicable.

[0042] In alternative implementations, such as Figure 4As shown, the airway includes a main airway 31, a first auxiliary airway 32, and a second auxiliary airway 33, which are independently configured. The main balloon 1 is connected to the main airway 31, and one of the two control balloons 2 is connected to the first auxiliary airway 32, while the other is connected to the second auxiliary airway 33.

[0043] In use, the main airway 31 can inflate the main balloon 1, making the main balloon 1 fully inflated, and can also expel the gas from the main balloon 1, making the main balloon 1 deflated. The first auxiliary airway 32 and the second auxiliary airway 33 can inflate the corresponding control balloon 2, making the corresponding control balloon 2 fully inflated, and can also expel the gas from the corresponding control balloon 2, making the corresponding control balloon 2 deflated.

[0044] In the above embodiments, the main airway 31, the first auxiliary airway 32, and the second auxiliary airway 33 can independently realize the inflation and deflation of the main balloon 1 and the two control balloons 2. The structure is simple and facilitates the inflation and deflation of the main balloon 1 and the two control balloons 2.

[0045] In alternative implementations, such as Figure 1 As shown, it also includes a tracheal assembly 4 connected to the conduit 3, which is used to purge or release air from the main airway 31, the first auxiliary airway 32, and the second auxiliary airway 33.

[0046] In the above embodiments, the tracheal tube assembly 4 facilitates the connection between the main airway 31, the first auxiliary airway 32, and the second auxiliary airway 33 and the external air source. At the same time, an air valve can be added to the tracheal tube assembly 4 to control the ventilation status of the main airway 31, the first auxiliary airway 32, and the second auxiliary airway 33, which facilitates the operation of the user.

[0047] In alternative implementations, such as Figure 1 As shown, the tracheal assembly 4 includes a main trachea 41, a first auxiliary trachea 42, and a second auxiliary trachea 43. The first ends of the main trachea 41, the first ends of the first auxiliary trachea 42, and the second auxiliary trachea 43 are connected. The first end of the main trachea 41 is connected to the main airway 31. The first end of the first auxiliary trachea 42 is connected to the first auxiliary airway 32. The first end of the second auxiliary trachea 43 is connected to the second auxiliary airway 33. The second ends of the main trachea 41, the first auxiliary trachea 42, and the second auxiliary trachea 43 are all connected to an air source.

[0048] It is understandable that the first end of the main air tube 41, the first end of the first auxiliary air tube 42, and the first end of the second auxiliary air tube 43 are... Figure 1 The left end of the main trachea 41, the first auxiliary trachea 42, and the second auxiliary trachea 43; the second end of the main trachea 41, the second end of the first auxiliary trachea 42, and the second end of the second auxiliary trachea 43 are... Figure 1The right end of the main trachea 41, the first auxiliary trachea 42, and the second auxiliary trachea 43.

[0049] In the above embodiments, one end of the tracheal assembly 4 is connected to a single point, which facilitates the connection between the tracheal assembly 4 and the conduit 3. The other end of the tracheal assembly 4 is dispersed, which facilitates the connection between each tracheal tube in the tracheal assembly 4 and the air source. It also facilitates the installation of air valves in each tracheal tube to individually control the opening and closing of each tracheal tube.

[0050] In an optional embodiment, the inner diameter of the main air tube 41 is larger than the inner diameter of the first auxiliary air tube 42 and the second auxiliary air tube 43.

[0051] Along the axial direction of the catheter 3, when the length of the main balloon 1 is significantly greater than the length of the control balloon 2, the cavity formed between the main balloon 1 and the catheter 3 is significantly larger than the cavity formed between the control balloon 2 and the catheter 3. The inner diameter of the main air tube 41 is larger than the inner diameter of the first auxiliary air tube 42 and the second auxiliary air tube 43, which enables the air source to enter the main balloon 1 quickly, accelerates the expansion and contraction rate of the main balloon 1, shortens the operation time, and improves the operation efficiency.

[0052] In alternative implementations, such as Figure 4 As shown, the catheter 3 has a wire-threading hole 34, which is set independently of the airway.

[0053] In use, after the guidewire is inserted, it is passed through the tip 35 of the catheter 3 and exited through the Luer connector 7. Then, the aortic balloon catheter is implanted into the body along the guidewire.

[0054] In alternative implementations, such as Figure 4 As shown, the main air passage 31, the first auxiliary air passage 32, and the second auxiliary air passage 33 are arranged around the wire-threading hole 34.

[0055] The above method facilitates the design of the axis of the guidewire hole 34 to coincide with the axis of the catheter 3, so that the guidewire can play a better guiding role for the aortic balloon catheter, and at the same time, the layout of the main airway 31, the first auxiliary airway 32 and the second auxiliary airway 33 is more reasonable.

[0056] In alternative implementations, such as Figure 1 As shown, the adjustable intra-aortic balloon catheter also includes a fixing sleeve 5, which is fixedly sleeved on the outside of the catheter 3, and the distal end of the fixing sleeve 5 is provided with a sleeve 8.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable intra-aortic balloon catheter, characterized in that, The device includes a main balloon (1), a control balloon (2), and a catheter (3). The catheter (3) has an airway. The main balloon (1) and the control balloon (2) are distributed along the axial direction of the catheter (3), and the control balloon (2) is distributed along the axial direction of the catheter (3) at the proximal and / or distal ends of the main balloon (1). The main balloon (1) and the control balloon (2) are both connected to the airway and are configured to be independently inflated and deflated through the airway. When both the main balloon (1) and the control balloon (2) are inflated, the diameter of the control balloon (2) is larger than the diameter of the main balloon (1).

2. The adjustable intra-aortic balloon catheter according to claim 1, characterized in that, Along the axial direction of the catheter (3), the length of the main balloon (1) is greater than the length of the control balloon (2).

3. The adjustable intra-aortic balloon catheter according to claim 1, characterized in that, The control balloons (2) are configured as two, and the two control balloons (2) are distributed one-to-one along the axis of the catheter (3) at the proximal and distal ends of the main balloon (1).

4. The adjustable intra-aortic balloon catheter according to claim 3, characterized in that, The airway includes a main airway (31), a first auxiliary airway (32), and a second auxiliary airway (33) that are independently configured. The main balloon (1) is connected to the main airway (31), and one of the two control balloons (2) is connected to the first auxiliary airway (32) and the other is connected to the second auxiliary airway (33).

5. The adjustable intra-aortic balloon catheter according to claim 4, characterized in that, It also includes a tracheal assembly (4) connected to the conduit (3), the tracheal assembly (4) being used to purge or release air from the main airway (31), the first auxiliary airway (32), and the second auxiliary airway (33).

6. The adjustable intra-aortic balloon catheter according to claim 5, characterized in that, The tracheal assembly (4) includes a main tracheal tube (41), a first auxiliary tracheal tube (42), and a second auxiliary tracheal tube (43). The first end of the main tracheal tube (41), the first end of the first auxiliary tracheal tube (42), and the first end of the second auxiliary tracheal tube (43) are connected. The first end of the main tracheal tube (41) is connected to the main airway (31). The first end of the first auxiliary tracheal tube (42) is connected to the first auxiliary airway (32). The first end of the second auxiliary tracheal tube (43) is connected to the second auxiliary airway (33). The second ends of the main tracheal tube (41), the first auxiliary tracheal tube (42), and the second auxiliary tracheal tube (43) are all connected to an air source.

7. The adjustable intra-aortic balloon catheter according to claim 6, characterized in that, The inner diameter of the main air pipe (41) is larger than the inner diameters of the first auxiliary air pipe (42) and the second auxiliary air pipe (43).

8. The adjustable intra-aortic balloon catheter according to claim 4, characterized in that, The catheter (3) has a threading hole (34) which is set independently of the airway.

9. The adjustable intra-aortic balloon catheter according to claim 8, characterized in that, The main air passage (31), the first auxiliary air passage (32) and the second auxiliary air passage (33) are arranged around the wire-threading hole (34).

10. The adjustable intra-aortic balloon catheter according to any one of claims 1-9, characterized in that, It also includes a fixing sleeve (5), which is sleeved on the outside of the conduit (3).

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