Single-interface aorta intervention balloon catheter

Abstract

The utility model relates to the technical field of medical instruments, and discloses an aorta intervention balloon catheter with a single interface, which comprises a balloon body, a catheter body (comprising an outer cavity and an inner cavity) and a catheter joint, and the functions of unifying the filling of the balloon catheter and monitoring the blood pressure by using a single interface are realized. According to the aorta intervention balloon catheter with the single connector, the technical problems that in the prior art, due to the fact that each cavity of a multi-cavity catheter needs to be provided with a connector, operation is complex, and infection risks can be possibly generated are solved. According to the balloon catheter, the catheter cavity is integrated, surgical operation can be carried out through one connector, the operation difficulty of connection between the balloon catheter and a host is greatly reduced, and the infection risk is reduced to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to the technical field of balloon catheters. Background Art

[0002] Resuscitative balloon occlusion of the aorta (REBOA) is a surgical procedure in which a balloon catheter device is introduced percutaneously into a vessel and then inflated to control bleeding. REBOA is increasingly being used to improve hemodynamic stability by increasing systolic blood pressure while controlling life-threatening bleeding prior to and / or during definitive surgical or endovascular intervention.

[0003] This technology is now available percutaneously and is provided in kit form, which includes femoral artery access as well as the REBOA balloon catheter device and fixation material. Occluding aortic blood flow can only be done with a compliant balloon, mainly because inflation of a non-compliant balloon in the aorta carries a high risk of vascular injury, such as aortic dissection. All REBOA balloon catheter devices contain a compliant balloon component that can be inflated to a diameter of approximately 9-40 mm. The choice of REBOA device depends on the specific clinical scenario (i.e., determining the appropriate balloon component size based on the target aortic segment) and operator preference. Femoral artery access can be achieved using the method most familiar to the operator, including femoral artery puncture by palpation or minimally invasive percutaneous entry under ultrasound guidance.

[0004] Resuscitative balloon occlusion of the aorta (REBOA) can be used to treat a variety of clinical diseases, including uncontrolled traumatic bleeding, postpartum hemorrhage, out-of-hospital cardiac arrest requiring cardiopulmonary resuscitation (CPR), and non-traumatic abdominal hemorrhage, and is usually performed in non-surgical areas.

[0005] Because the existing technology requires fluoroscopic guidance when dealing with traumatic bleeding, non-traumatic bleeding, traumatic cardiac arrest and non-traumatic cardiac arrest, and the operation process of large fluoroscopic instruments is too complicated, in time-sensitive emergency situations, the use of fluoroscopy, CT, MR scanning, etc. for intravascular catheterization takes too long and is not the best choice. Therefore, the demand for portable REBOA operating systems is increasing, mainly through portable devices, so that REBOA can be operated in hospitals or non-hospital environments by users who have not undergone much relevant professional training. This allows not only resident experts, but also non-doctors or people who only have medical knowledge to operate.

[0006] The problem with the prior art is that, as mentioned above, the balloon catheter used with REBOA in the prior art has the following disadvantages: the commonly used balloon catheter is a multi-lumen catheter, each lumen has an interface, and the redundant interfaces are prone to infection risks, which is not conducive to out-of-hospital emergency treatment or the treatment of severe vascular wounds in a short period of time.

[0007] Purpose of the utility model: To achieve a single interface that can be directly connected to the REBOA host, a balloon catheter is designed to greatly reduce the operational difficulty of connecting the balloon catheter to the host and reduce the risk of infection. Summary of the invention

[0008] The embodiment of the utility model provides a single-interface aortic interventional balloon catheter, which solves the technical problem that each cavity of a multi-lumen catheter in the prior art needs to have an interface, which leads to complicated operation and possible health risks. The embodiment of the application integrates the catheter cavity and can perform surgical operations through one interface, greatly reducing the difficulty of connecting the balloon catheter to the host and reducing the risk of infection.

[0009] The embodiment of the utility model discloses a balloon catheter, comprising: a balloon body (10); a catheter body (20), which is divided into an outer cavity (201), an inner cavity (202), a developing mark (203), a non-damaging tip (204) and an opening (205) thereon; a catheter connector (30), which has an outer cavity fixing piece (301), an inner cavity fixing piece (302) and a fixing block (303); a connectable structure (304) is provided on the outer side of the catheter connector (30); and a host (40), which is provided with a pressure measuring device (401) therein.

[0010] An embodiment of the utility model discloses a balloon catheter, characterized in that the balloon catheter comprises:

[0011] A balloon body (10), the balloon body (10) is located at the distal end of the balloon catheter, and the balloon body (10) can enter the corresponding position of the aorta, and is a volume-variable balloon, which can control its expansion and contraction, and is used to quickly block trunk bleeding;

[0012] A catheter body (20), the catheter body being divided into an outer cavity (201) and an inner cavity (202): the outer cavity (201) extending from the proximal end of the balloon catheter to the proximal end of the balloon body (10), and extending from the distal end of the balloon body (10) to the distal end of the balloon catheter; the inner cavity (202) is within the outer cavity (201), passes through the balloon body (10), extends from the proximal end of the balloon catheter to the distal end of the balloon catheter, and is in communication with a blood vessel in a subject;

[0013] A catheter connector (30), the catheter connector (30) comprising an outer cavity fixing piece (301), an inner cavity fixing piece (302) and a fixing block (303): the outer cavity fixing piece (301) fixing the proximal end of the outer cavity (201); the inner cavity fixing piece (302) fixing the proximal end of the inner cavity (202); and the fixing block (303) connecting the inner cavity fixing piece (302) and the catheter connector (30).

[0014] Furthermore, the balloon body (10) is compliant or semi-compliant, and the material may be PA\TPU\PEBAX, etc.

[0015] Furthermore, the initial diameter of the balloon body (10) is in the range of 5-15 mm, preferably 10 mm; the diameter after being filled is in the range of 15-40 mm, preferably 25 mm;

[0016] Furthermore, the length of the balloon body (10) is in the range of 20-40 mm, preferably 22 mm;

[0017] Furthermore, the wall thickness of the balloon body (10) is in the range of 0.02-0.3 mm, preferably 0.04 mm;

[0018] Furthermore, the balloon body (10) can operate normally within an inflation pressure range of 100-400 mmHg, and a critical bursting pressure of 2 atm.

[0019] Furthermore, the inner cavity (202) is inside the outer cavity (201), and the relative positions of the two cavities are concentric or eccentric.

[0020] Furthermore, the diameter of the outer cavity (201) ranges from 5Fr to 8Fr, preferably 6Fr; the diameter of the inner cavity (202) ranges from 3Fr to 4.5Fr, preferably 3.3Fr;

[0021] Furthermore, the thickness of the outer cavity (201) is in the range of 0.15-0.4 mm, preferably 0.3 mm; and the thickness of the inner cavity (202) is in the range of 0.1-0.4 mm, preferably 0.3 mm.

[0022] Furthermore, there is a gap between the outer cavity (201) and the inner cavity (202), and the gap ranges from 0.1 to 0.3 mm, preferably from 0.12 to 0.2 mm.

[0023] Furthermore, the catheter body (20) is provided with at least one developing mark (203), and the developing mark (203) is located at the center of the balloon body (10) or at the proximal end and the distal end of the balloon body (10);

[0024] Furthermore, the development mark (203) includes but is not limited to a tantalum / platinum-iridium development ring, a polymer development coating, and other materials that have DSA developability.

[0025] Furthermore, the distal end of the catheter body (20) terminates in an atraumatic tip (204).

[0026] Furthermore, the non-damaging tip (204) has at least one opening (205), and the opening (205) connects the blood vessel with the inner cavity (202); the non-damaging tip (204) may be a tip with a tapered end or a pigtail-like tube.

[0027] Furthermore, the material of the outer cavity (201) includes but is not limited to: Pebax, nylon, etc.; the material of the inner cavity (202) includes but is not limited to: stainless steel sus304, NITI tube, etc.

[0028] Furthermore, the outer side of the catheter interface (30) has a connectable structure (304), and the connectable structure (304) includes but is not limited to: a threaded interface, a plug-in interface, a bayonet interface, a rubber ring fixing interface or a press interface.

[0029] Furthermore, the inner cavity fixing piece (302) has a second conical surface (3021) inside, which can be docked with the target docking interface to communicate with the inner cavity, and the second conical surface (3021) can be a conical design or a threaded design.

[0030] Furthermore, the fixing block (303) has one or more openings to facilitate fluid communication with the outer cavity (201).

[0031] Furthermore, the balloon catheter also includes a host (40), and the host (40) is arranged at the proximal end of the balloon catheter.

[0032] Furthermore, a pressure measuring device (401) is provided in the host (40), and the host (40) is used to display the pressure value measured by the pressure measuring device (401);

[0033] Furthermore, the pressure measuring device (401) comprises a pressure sensor or a wireless pressure sensor, and the pressure measuring device (401) is communicatively connected to the host (40).

[0034] The utility model has the advantages of providing a fillable device for vascular intervention, which solves the technical problem that each cavity of a multi-cavity catheter in the prior art needs to have an interface, which leads to complicated operation and possible health risks. The embodiment of the application integrates the catheter cavity and can perform surgical operations through an interface, greatly reducing the difficulty of connecting the balloon catheter to the host and reducing the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are only used to illustrate preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to identify the same components throughout the accompanying drawings. In the accompanying drawings:

[0036] Figure 1 For balloon catheters;

[0037] Figure 2 It is the top view of the balloon catheter AA;

[0038] Figure 3 This is the AA cross-sectional view of the balloon catheter;

[0039] Figure 4 It is the top view of the balloon catheter BB;

[0040] Figure 5 This is the BB cross-sectional view of the balloon catheter;

[0041] Figure 6 It is a three-dimensional view of a fixed block;

[0042] Figure 7 The fixed block is integrally formed in solution a;

[0043] Figure 8 Solution b for the one-piece molding of the fixing block;

[0044] Fig. 9 Example diagram for use with the host.

[0045] Explanation of the reference numerals: 10: balloon body; 20: catheter body; 201: outer cavity; 202: inner cavity; 203: developing mark; 204: intact tip; 205: opening; 30: catheter connector; 301: outer cavity fixing piece; 302: inner cavity fixing piece; 303: fixing block; 304: connectable structure; 40: host; 401: pressure measuring device. DETAILED DESCRIPTION

[0046] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0047] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described in the text are not interpreted as requiring the specific order in which they are described or illustrated to be performed, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0048] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0049] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted on the way. For example, if the device on the way turns over, the element described as "below other elements or features" or "below other elements or features" will be subsequently oriented to "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0050] In the description of the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "fix" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the field of interventional medical devices, the end of a medical device that intervenes in the human or animal body that is closer to the operator is generally called the "proximal end", and the end that is farther from the operator is called the "distal end". The "proximal end" and "distal end" of any component of a medical device are defined based on this principle.

[0052] A balloon catheter, see Figure 2 , comprising a balloon body (10), a catheter body (20), and a catheter connector (30). The catheter body (20) is divided into an outer cavity (201) and an inner cavity (202), wherein the outer cavity (201) surrounds the inner cavity (202) and there is a gap between the two; the inner cavity (202) extends from the proximal end of the balloon catheter to the distal end of the balloon catheter and passes through the interior of the balloon body (10). The catheter connector (30) is located at the proximal end of the balloon catheter and fixes the outer cavity (201) and the inner cavity (202). Through the catheter connector (30), balloon filling and blood pressure monitoring can be achieved through a single interface.

[0053] A catheter connector (30) comprises an outer cavity fixing piece (301), an inner cavity fixing piece (302) and a fixing block (303). The outer cavity fixing piece (301) is fixedly engaged with the outer cavity (201) and is integrally formed with a connectable structure (304) at the proximal end of the catheter connector (30), wherein the connectable structure (304) includes but is not limited to: a threaded interface, a plug-in interface, a bayonet interface, a rubber ring fixing interface or a press interface. The proximal end of the outer cavity fixing member (301) is located inside the connectable structure (304), and the outer side of the proximal end of the outer cavity fixing member (301) has a first conical surface (3011). The inner cavity fixing member (302) is inside the catheter connector (30), fixedly engaged with the inner cavity (202), and tightly engaged with the fixing block (303) inside the outer cavity fixing member (301). The fixing block (303) is fixedly engaged with or integrally formed on the inner wall of the catheter connector (30), and one or more openings are provided on the fixing block to facilitate the fluid to communicate with the outer cavity (201).

[0054] Furthermore, the inner cavity fixing piece (302) has a second conical surface (3021) inside, which can be docked with the target docking interface to connect with the inner cavity. The second conical surface (3021) can be a conical design or a threaded design, which can enable the inner cavity (202) and the corresponding docking interface of the host (40) to be tightly connected without causing the risk of affecting the air tightness.

[0055] When the balloon body (10) is required to seal the entire aorta, gas or liquid is injected into the outer cavity (201) from the catheter connector (30) through the hole channel on the fixing block (303), and finally fills the balloon body (10). The balloon body (10) expands, and the outer surface of the balloon body (10) and the inner wall of the blood vessel are closely attached to each other, thereby achieving occlusion of the blood vessel. At the same time, the blood in the blood vessel flows into the inner cavity (202) from the opening (205) on the non-damaged tip (204), and finally flows to the proximal end of the balloon catheter, and contacts the pressure measuring device (401) at the catheter connector (30), so that the pressure measuring device (401) detects the blood pressure value in the blood vessel, thereby indicating whether the balloon catheter has reached the predetermined target position and completed the vascular occlusion effect.

[0056] Furthermore, in order to facilitate the balloon catheter to enter the blood vessel, there are two implementation schemes.

[0057] The first option is: See Figure 1-4, the non-destructive tip (204) of the catheter body (20) is designed as a smooth tapered head. In this scheme, the inner cavity (202) allows the insertion of a guide wire, and the guide wire can be passed through the opening of the inner cavity (202) at the catheter connector (30) at the proximal end of the catheter body (20). After the guide wire reaches the target position in the subject's body, the balloon catheter is guided to the target position. After the balloon catheter reaches the specified position, the guide wire is withdrawn and the catheter connector (30) is connected to the host (40). At this time, the inner cavity (202) is connected to the blood vessel through the opening (205) on the non-destructive tip (204) at the distal end of the balloon catheter, so the inner cavity (202) is filled with blood. Since the inner cavity (202) is in contact with the pressure measuring device (401) through the catheter connector (30), the blood pressure value in the blood vessel can be detected by the pressure measuring device (401). After the catheter connector (30) is connected to the main unit (40), the outer cavity (201) receives gas or liquid injected from the main unit (40) through the hole channel of the fixing block (303), thereby filling the balloon body (10). Figure 7-8 As shown, the fixing block (303) is fixedly joined to the inner cavity fixing piece (302) or is integrally formed on the inner wall of the catheter connector (30).

[0058] The second option is: See Figure 5 The non-damaging tip (204) of the catheter body (20) is designed as a pigtail tube in a "J" shape, which will not damage the blood vessel and can directly guide the balloon catheter into the blood vessel without using a guide wire. In this scheme, the balloon catheter can reach the target position in the subject's body without a guide wire, and the catheter connector (30) can be directly connected to the host (40). At this time, the inner cavity (202) is connected to the blood vessel through the opening (205) on the non-damaging tip (204) at the distal end of the balloon catheter, so the inner cavity (202) is filled with blood. Since the inner cavity (202) is in contact with the pressure measuring device (401) through the catheter connector (30), the blood pressure value in the blood vessel can be detected by the pressure measuring device (401). After the catheter connector (30) is connected to the host (40), the outer cavity (201) receives the gas or liquid injected by the host (40) through the hole channel of the fixed block (303), thereby filling the balloon body (10).

[0059] Furthermore, the balloon body (10) is a compliant balloon or a semi-compliant balloon, and the maximum diameter of the balloon body (10) after expansion is greater than or equal to the diameter of the aortic blood vessel. Preferably, the maximum diameter of the balloon body (10) after expansion can reach 35 mm. With this design, it can be ensured that the balloon body (10) occludes the aortic blood vessel.

[0060] Furthermore, the initial diameter of the balloon body (10) is in the range of 5-15 mm, preferably 10 mm; the diameter after being filled is in the range of 15-40 mm, preferably 25 mm;

[0061] Furthermore, the length of the balloon body (10) is in the range of 20-40 mm, preferably 22 mm;

[0062] Furthermore, the wall thickness of the balloon body (10) is in the range of 0.02-0.3 mm, preferably 0.04 mm;

[0063] Furthermore, the balloon body (10) can operate normally within an inflation pressure range of 100-400 mmHg, and a critical bursting pressure of 2 atm.

[0064] Furthermore, a developable mark (203) is provided in the area of ​​the balloon body (10) of the catheter body (20), and the developable mark (203) can be used to indicate the position of the balloon body (10) in the body.

[0065] Furthermore, the development mark (203) can be a tantalum / platinum-iridium development ring, which is located on the outer layer of the inner section of the inner cavity (202) of the balloon body (10).

[0066] Furthermore, the development mark (203) may be a polymer coating, which is located on the outer layer of the outer cavity (201) at both ends connected to the balloon body (10).

[0067] Furthermore, the inner cavity (202) is inside the outer cavity (201), and the relative positions of the two cavities are concentric or eccentric.

[0068] Furthermore, the diameter of the outer cavity (201) ranges from 5Fr to 8Fr, preferably 6Fr; and the diameter of the inner cavity (202) ranges from 3Fr to 4.5Fr, preferably 3.3Fr.

[0069] Furthermore, the thickness of the outer cavity (201) is in the range of 0.15 to 0.4 mm, preferably 0.3 mm; and the thickness of the inner cavity (202) is in the range of 0.1 to 0.4 mm, preferably 0.3 mm.

[0070] Furthermore, there is a gap between the outer cavity (201) and the inner cavity (202), and the size of the gap ranges from 0.1 to 0.3 mm, preferably 0.2 mm.

[0071] Furthermore, the material of the outer cavity (201) includes but is not limited to: Pebax, nylon, etc.; the material of the inner cavity (202) includes but is not limited to: stainless steel sus304, NITI tube, etc.

[0072] Further, see Figure 3 The outer side of the catheter interface (30) has a connectable structure (304), and the connectable structure (304) includes but is not limited to: a threaded interface, a plug-in interface, a bayonet interface, a rubber ring fixing interface or a press interface.

[0073] Furthermore, the inner cavity fixing piece (302) has a second conical surface (3021) inside, which can be docked with the target docking interface to communicate with the inner cavity, and the second conical surface (3021) can be a conical design or a threaded design.

[0074] Furthermore, the balloon catheter also includes a host (40), and the host (40) is arranged at the proximal end of the balloon catheter.

[0075] Further, see Fig. 9 , a pressure measuring device (401) is provided in the host (40), and the host (40) is used to display the pressure value measured by the pressure measuring device (401);

[0076] Furthermore, the pressure measuring device (401) includes a pressure sensor or a wireless pressure sensor, and the pressure measuring device (401) is connected to the host (40) in communication. The pressure measuring device (401) is used to monitor the pressure at the distal end of the balloon body (10). In this embodiment, the pressure measuring device (401) is arranged in the host (40) and connected to the blood vessel through the inner cavity (202), which can avoid the potential risks of electronic components such as sensors in the body, and can also monitor the pressure changes at the distal end of the balloon body (10), thereby avoiding the balloon body (10) from causing further damage to the blood vessel during the occlusion process.

[0077] Furthermore, the host (40) can be connected to the pressure measuring device (401) for communication. The host (40) receives the detection data of the pressure measuring device (401) and displays the detection data, and the data can be displayed in the form of waveforms or numbers or both.

[0078] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A single-port aortic interventional balloon catheter, characterized in that: It comprises a balloon body (10), wherein the balloon body (10) is located at the distal end of the balloon catheter; A catheter body (20), the catheter body being divided into an outer cavity (201) and an inner cavity (202): the outer cavity (201) extending from the proximal end of the balloon catheter to the proximal end of the balloon body (10), and extending from the distal end of the balloon body (10) to the distal end of the balloon catheter; the inner cavity (202) is within the outer cavity (201), passes through the balloon body (10), extends from the proximal end of the balloon catheter to the distal end of the balloon catheter, and is in communication with a blood vessel in a subject; A catheter connector (30), the catheter connector (30) comprising an outer cavity fixing piece (301), an inner cavity fixing piece (302) and a fixing block (303): the outer cavity fixing piece (301) fixes the proximal end of the outer cavity (201); the inner cavity fixing piece (302) fixes the proximal end of the inner cavity (202); the fixing block (303) connects the inner cavity fixing piece (302) and the catheter connector (30).

2. The aortic intervention balloon catheter according to claim 1, characterized in that: The initial diameter of the balloon body (10) is in the range of 5-15 mm; the diameter after filling is in the range of 15-40 mm; the length of the balloon body (10) is in the range of 20-40 mm; the wall thickness of the balloon body (10) is in the range of 0.02-0.3 mm; and the inflation pressure of the balloon body (10) is in the range of 100-400 mmHg.

3. The aortic intervention balloon catheter according to claim 2, characterized in that: The distal end of the catheter body (20) terminates at a damage-free tip (204), and the damage-free tip (204) has at least one opening (205), and the opening (205) connects the blood vessel with the inner cavity (202); the damage-free tip (204) can be a tapered head end or a pigtail-like form.

4. The aortic intervention balloon catheter according to claim 1, characterized in that: The material of the outer cavity (201) is Pebax and nylon; the material of the inner cavity (202) is stainless steel sus304 and NITI tube.

5. The aortic intervention balloon catheter according to claim 1, characterized in that: The diameter of the outer cavity (201) is in the range of 5-8Fr; the diameter of the inner cavity (202) is in the range of 3Fr-4.5Fr; and there is a gap between the outer cavity (201) and the inner cavity (202), and the gap ranges from 0.1-0.3mm.

6. The aortic interventional balloon catheter according to claim 1, characterized in that: The outer side of the catheter joint (30) is provided with a connectable structure (304), and the connectable structure (304) is: a threaded interface, a plug-in interface, a bayonet interface, a rubber ring fixing interface or a press interface.

7. The aortic interventional balloon catheter according to claim 1, characterized in that: The inner cavity fixing piece (302) has a second conical surface (3021) inside, which can be docked with the target docking interface to connect with the inner cavity. The second conical surface (3021) can be a conical design or a threaded design.

8. The aortic intervention balloon catheter according to claim 1, characterized in that: The fixing block (303) has one or more openings to facilitate fluid communication with the outer cavity (201).

9. The aortic intervention balloon catheter according to any one of claims 1 to 8, characterized in that: The balloon catheter further comprises a host (40), and the host (40) is arranged at the proximal end of the balloon catheter.

10. The aortic interventional balloon catheter according to claim 9, characterized in that: The host (40) is provided with a pressure measuring device (401), and the host (40) is used to display the pressure value measured by the pressure measuring device (401); The pressure measuring device (401) comprises a pressure sensor or a wireless pressure sensor, and the pressure measuring device (401) is communicatively connected with the host (40).

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