Vascular intervention catheter integrated with real-time imaging function and interventional therapy system

Abstract

The invention discloses a vascular intervention catheter integrated with a real-time imaging function and an interventional therapy system.The vascular intervention catheter integrated with the real-time imaging function comprises a catheter body and an imaging probe, a working channel is formed in the catheter body, the imaging probe is arranged on the side wall of the far end of the catheter body, and in the process that the catheter body stretches into a blood vessel, the working channel is communicated with the imaging probe. The imaging probe can acquire image information in a blood vessel in real time, the catheter body stops moving when stretching into a target focus position, then corresponding surgical operation can be carried out, and the working channel is used for the working part to carry out operation according to the image information acquired by the imaging probe, so that the function of operating while observing is achieved. By means of the vascular intervention catheter, continuous visualization of the whole operation process can be achieved; the first-time passing success rate and the overall efficiency of the operation are improved; and the safety and controllability of the operation are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a vascular interventional catheter and interventional treatment system with integrated real-time imaging function. Background Technology

[0002] In vascular interventional surgery, to achieve precise localization and treatment of lesions inside blood vessels (such as thrombosis, stenosis, and aneurysm), current clinical practice mainly relies on the following two interventional treatment modes: two-dimensional fluoroscopic guidance based on digital subtraction angiography (DSA); and high-resolution intravascular imaging based on independent imaging catheters.

[0003] In the case of two-dimensional fluoroscopic guidance using digital subtraction angiography (DSA), the operator obtains a two-dimensional contour image of the blood vessel through X-ray fluoroscopy and injects contrast agent to display the luminal morphology. In this mode, the advancement and manipulation of interventional catheters (such as aspiration catheters and balloon catheters) rely entirely on the two-dimensional fluoroscopic images. This method has inherent drawbacks such as exposure to ionizing radiation (to both the doctor and patient), lack of detailed structural information about the vessel wall and lesions, and blurred three-dimensional spatial positioning.

[0004] To compensate for the limitations of DSA, when using high-resolution endovascular imaging based on independent imaging catheters, independent imaging catheters such as Intravascular Ultrasound (IVUS) or Optical Coherence Tomography (OCT) are often used in key steps. The standard operating procedure is as follows: First, under DSA fluoroscopy, the guidewire is advanced to the target area; then, the angiography or treatment catheter is withdrawn, and an IVUS / OCT catheter is inserted separately along the guidewire for high-resolution imaging to accurately assess the nature, size, and vessel dimensions of the lesion. After imaging, the IVUS / OCT catheter is withdrawn again; finally, the treatment catheter is reinserted along the guidewire for treatment. While this "see first, then do, exchange operations" approach provides better image quality, it leads to severe disruption and interruption of the surgical procedure, significantly prolonging the operation time. Furthermore, during treatment catheter manipulation, real-time, high-resolution image guidance of the lesion site is lost again, and the treatment process returns to a "relatively blind" state.

[0005] In summary, the current system suffers from a fundamental contradiction: relying on DSA lacks precise structural information, while relying on independent intracavitary imaging leads to interruptions in the procedure and prevents real-time guidance of treatment. Therefore, how to synchronize real-time imaging with interventional treatment procedures, reducing surgical time and complexity, has become an urgent problem to be solved. Summary of the Invention

[0006] One objective of this invention is to provide a vascular interventional catheter with integrated real-time imaging function, which enables real-time imaging and interventional treatment to be performed simultaneously, thereby reducing the operation time and difficulty; another objective is to provide an interventional treatment system including the aforementioned vascular interventional catheter with integrated real-time imaging function.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A vascular interventional catheter with integrated real-time imaging function includes: a catheter body and an imaging probe. The catheter body has a working channel extending along its axial direction. The imaging probe is disposed on the side wall at the distal end of the catheter body. The imaging probe is used to acquire image information inside the blood vessel in real time during the insertion of the catheter body into the blood vessel. The catheter body stops moving when it reaches the target lesion location. The working channel is used for the working part to perform operations based on the image information acquired by the imaging probe.

[0009] In some embodiments, the catheter body is provided with an imaging channel that is isolated from the working channel. The imaging channel is used for a signal transmission line to pass through. One end of the signal transmission line is used to connect to the imaging probe, and the other end is used to connect to the image processing host.

[0010] In some embodiments, the imaging channel is an annular channel surrounding the working channel, and at least one imaging probe is provided in the annular channel, with a plurality of imaging probes distributed along the circumference of the annular channel.

[0011] In some embodiments, the catheter body is provided with reinforcing ribs that divide its inner lumen into the working channel and the imaging channel, wherein the cross-sectional area of ​​the working channel is larger than that of the imaging channel.

[0012] In some embodiments, the reinforcing rib includes a first reinforcing piece and a second reinforcing piece, the first reinforcing piece and the second reinforcing piece being arranged at a preset angle, and the first reinforcing piece, the second reinforcing piece and a portion of the sidewall of the catheter body forming the imaging channel.

[0013] In some embodiments, the reinforcing rib includes a first arc-shaped piece, a second arc-shaped piece, and a third arc-shaped piece. The recesses of the first and third arc-shaped pieces face the working channel, the recesses of the second arc-shaped piece face the imaging channel, and the outer surface of the imaging probe is attached to the concave surface of the second arc-shaped piece. The second arc-shaped piece is smoothly connected to the first and third arc-shaped pieces.

[0014] In some embodiments, the imaging channel is provided with a shielding layer, and the signal transmission line passes through the shielding layer.

[0015] In some embodiments, the imaging probe is an IVUS probe and / or an OCT probe.

[0016] In some embodiments, the imaging probe is detachably connected to the catheter body.

[0017] An interventional treatment system comprising a vascular interventional catheter with integrated real-time imaging function as described in any of the preceding claims.

[0018] Compared with existing technologies, the above technical solution has at least the following advantages:

[0019] This invention provides a vascular interventional catheter with integrated real-time imaging function, comprising: a catheter body and an imaging probe. The catheter body has a working channel extending along its axial direction. The imaging probe is located on the side wall of the distal end of the catheter body. During the insertion of the catheter body into the blood vessel, the imaging probe can acquire real-time image information within the blood vessel. When the catheter body reaches the target lesion location, it stops moving to maintain its position, and then the corresponding surgical procedure can be performed. The working channel allows the operating unit to perform operations based on the image information acquired by the imaging probe, achieving the function of simultaneous observation and operation. By using the vascular interventional catheter provided by this invention, continuous visualization of the entire surgical process can be achieved, eliminating blind spots; greatly improving the first-pass success rate and overall efficiency of the surgery; enhancing the safety and controllability of the surgery; and allowing the surgeon to monitor the relationship between the catheter body and the fragile blood vessel wall in real time, avoiding blind pushing that could lead to vascular damage.

[0020] The interventional treatment system provided by this invention has corresponding advantages because it includes the aforementioned vascular interventional catheter with integrated real-time imaging function. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A cross-sectional view of a vascular interventional catheter with integrated real-time imaging function provided for a specific embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of an interventional therapy system provided in a specific embodiment of the present invention;

[0024] Figure 3A schematic diagram of the cross-sectional structure of the first vascular interventional catheter provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the second type of vascular interventional catheter provided by the present invention;

[0026] Figure 5 This is a schematic diagram of the cross-sectional structure of the third type of vascular interventional catheter provided by the present invention;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of the fourth type of vascular interventional catheter provided by the present invention.

[0028] The attached figures are labeled as follows:

[0029] 100-Vascular interventional catheter; 101-Inner ring; 102-Outer ring; 110-Catheter body; 111-Working channel; 120-Imaging probe; 121-Signal transmission line; 130-Imaging channel; 140-Reinforcing rib; 141-First reinforcing plate; 142-Second reinforcing plate; 143-First arc-shaped plate; 144-Second arc-shaped plate; 145-Third arc-shaped plate;

[0030] 200-Image Processing Host;

[0031] 300-Suction Pump. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please refer to Figures 1 to 6 .

[0034] An embodiment of the present invention provides a vascular interventional catheter 100 with integrated real-time imaging function, comprising: a catheter body 110 and an imaging probe 120. The catheter body 110 has a working channel 111 extending along its axial direction. The working channel 111 is used to deliver interventional devices, such as aspiration tips, guidewires, balloons, or stents; or to transport fluids, such as aspiration of thrombi, injection of contrast agents, or drugs. The imaging probe 120 is disposed on the side wall of the distal end of the catheter body 110, for example, it can be embedded in the outer side wall or outer end face of the distal end of the catheter body 110. Alternatively, the imaging probe 120 can be connected to the catheter body 110 in other ways. For example, the imaging probe 120 can be permanently fixed to the distal end of the imaging channel 130 with medical adhesive. As long as the imaging probe 120 can be fixed relative to the catheter body 110, that is, the imaging probe 120 is integrated into the catheter body 110 so that the two are spatially fixed and functionally synchronized. During the insertion of the catheter body 110 into the blood vessel, the imaging probe 120 can acquire image information inside the blood vessel in real time. For example, it can obtain cross-sectional or three-dimensional images of the blood vessel wall and lesion in front of or around the catheter body 110. When the catheter body 110 is inserted into the target lesion location, it stops moving to maintain the position of the catheter body 110, and then the corresponding surgical operation can be performed. The working channel 111 is used for the working part to perform operations based on the image information acquired by the imaging probe 120, so as to realize the function of observation and operation at the same time.

[0035] By employing the vascular interventional catheter 100 provided by this invention, continuous visualization of the entire surgical process can be achieved, eliminating blind spots and solving the problem of visual interruption caused by instrument exchanges in existing technologies. This transforms interventional procedures from blind operations relying on experience and intuition to precise operations that are fully visualized and guided. It significantly improves the first-pass success rate and overall efficiency of the surgery. Due to the precise navigation guided by real-time images, the catheter body 110 can be inserted into position in one go, reducing the number of repeated adjustments and avoiding multiple instrument exchanges and repetitive operations due to poor results. This significantly shortens the surgical time and reduces consumable usage. It also enhances the safety and controllability of the surgery, allowing the surgeon to monitor the procedure in real time. The monitoring of the relationship between the catheter body 110 and the fragile blood vessel wall avoids blind pushing that could cause vascular damage. For example, during aspiration, the process of thrombus removal can be directly observed. If signs such as vasospasm, intimal tear, or thrombus detachment occur, they can be detected early on imaging and intervened immediately to prevent the spread of complications. This lays the foundation for the intelligent and standardized development of interventional surgery. The real-time images generated by the catheter body 110 are strictly synchronized with the treatment operation in time and space, forming structured surgical data. This makes it possible for computer-aided analysis, such as automatic identification of thrombus boundaries, quantification of clearance percentage, and intelligent control, such as automatic adjustment of aspiration negative pressure based on image feedback, to be possible. This is conducive to promoting the development of surgery in a more objective and standardized direction.

[0036] In some embodiments, the catheter body 110 is provided with an imaging channel 130 that is isolated from the working channel 111. That is, the catheter body 110 has a multi-lumen structure, one lumen being the working channel 111 and the other lumen being the imaging channel 130. The imaging channel 130 is used for the signal transmission line 121 to pass through. To reduce interference, a shielding layer can be provided inside the imaging channel 130. The shielding layer includes a metal braided mesh. The signal transmission line 121 passes through the shielding layer, wherein one end of the signal transmission line 121 is used to connect to the imaging probe 120 and the other end is used to connect to the image processing host 200. During manufacturing, the imaging probe 120 can be welded to the signal transmission line 121 first. Then, the welded imaging probe 120 and signal transmission line 121 are placed into a mold. Medical polymer materials with different melting points, such as polyurethane and nylon elastomers, are melted and injected into the corresponding cavities of the mold. They are then co-extruded and molded in one go under high temperature and high pressure. During this process, the imaging probe 120 and signal transmission line 121 are permanently encapsulated in the wall of the catheter body 110, and the metal braided mesh is simultaneously composited into a shielding layer. Subsequently, the molded tubing is cooled, calibrated, cut, and polished smooth. Then, a connector is injection molded at the proximal end of the catheter body 110 to install a Luer lock interface and a multi-core electrical connector. Finally, electrical performance, acoustic performance, fluid resistance, and sterility tests are performed.

[0037] In some embodiments, the imaging channel 130 is an annular channel surrounding the working channel 111, that is, the cross-section of the catheter body 110 is concentrically circular. The channel located in the inner ring 101 is the working channel 111, and the channel between the inner ring 101 and the outer ring 102 is an annular channel. A support structure is provided between the annular channels. For example, an axially extending support strip can be provided on the outer periphery of the inner ring 101 or the inner periphery of the outer ring 102. The support strip can be integrally formed on the inner ring 101 and / or the outer ring 102. Specifically, multiple support strips distributed in a circumferential direction can be provided in the annular channel. At least one imaging probe 120 is provided in the annular channel, and multiple imaging probes 120 are distributed in a circumferential direction of the annular channel. For example, they can be evenly distributed in a circumferential direction. The number of imaging probes 120 can be selected according to actual needs, and this embodiment does not specifically limit this. Multiple signal transmission lines 121 extend to the proximal end of the catheter body 110 and are led out by a side cable channel to connect to the image processing host 200.

[0038] In some embodiments, the catheter body 110 is provided with a reinforcing rib 140, which divides its inner lumen into a working channel 111 and an imaging channel 130. The cross-sectional area of ​​the working channel 111 is larger than that of the imaging channel 130. For example, the cross-section of the imaging channel 130 can be D-shaped or other shapes. For example, the cross-sectional structure of the reinforcing rib 140 can be arc-shaped or zigzag-shaped, and the cross-section of the imaging channel 130 will also vary accordingly. By designing the cross-sectional area of ​​the working channel 111 to be larger than that of the imaging channel 130, the cross-sectional proportion of the working channel 111 can be guaranteed. For example, when the catheter body 110 is used as an aspiration catheter, a larger working channel 111 can ensure a stronger instantaneous aspiration flow rate, higher negative pressure transmission efficiency, and better hydrodynamic performance. This significantly enhances the ability to clear heavy, viscous thrombi, and is expected to reduce the number of aspirations and shorten the recanalization time. In addition to isolating the working channel 111 and the imaging channel 130, the reinforcing rib 140 also acts as a reinforcing rib, enhancing the catheter body 110's resistance to bending and flattening during torsion and bending, ensuring delivery and maneuverability in tortuous blood vessels. Specifically, for the D-shaped cross-section of the working channel 111 and the imaging channel 130, the working channel 111 is enclosed by a large circular arc wall and a straight wall smoothly connected to both ends of the large circular arc wall. The imaging channel 130 is enclosed by a small circular arc wall and a straight wall smoothly connected to both ends of the small circular arc wall. The straight wall is the aforementioned reinforcing rib 140. The thickness of this straight wall can be selected within the range of 0.1mm to 0.15mm and can be injection molded from a high-hardness polymer material to ensure structural strength and prevent cross-contamination between the working channel 111 and the imaging channel 130.

[0039] In some embodiments, the reinforcing rib 140 includes a first reinforcing piece 141 and a second reinforcing piece 142, which are arranged at a preset angle. For example, the angle between the first reinforcing piece 141 and the second reinforcing piece 142 can be selected within the range of 60° to 90°. Other angles can also be selected according to actual needs. The first reinforcing piece 141, the second reinforcing piece 142, and a portion of the sidewall of the catheter body 110 form an imaging channel 130, i.e., the cross-section of the imaging channel 130 is fan-shaped. By designing the angle between the first reinforcing piece 141 and the second reinforcing piece 142 to be less than 180°, the cross-sectional area of ​​the working channel 111 can be effectively increased to maximize the working channel 111. The first reinforcing piece 141 and the second reinforcing piece 142 are preferably integrally molded structures, for example, by injection molding. Alternatively, they can be integrally molded with the catheter body 110 to ensure structural stability.

[0040] In some embodiments, the reinforcing rib 140 includes a first arc-shaped piece 143, a second arc-shaped piece 144, and a third arc-shaped piece 145. The recesses of the first arc-shaped piece 143 and the third arc-shaped piece 145 face the working channel 111, thus increasing the cross-sectional area of ​​the working channel 111. The recess of the second arc-shaped piece 144 faces the imaging channel 130, and the outer surface of the imaging probe 120 is attached to the concave surface of the second arc-shaped piece 144. That is, the recess of the second arc-shaped piece 144 can serve as a support for the imaging probe 120, which can improve the stability of the imaging probe 120 fixed in the imaging channel 130 and make full use of the space in the imaging channel 130. The second arc-shaped piece 144 is smoothly connected to the first arc-shaped piece 143 and the third arc-shaped piece 145 to ensure the structural stability of the catheter. In addition, the first arc-shaped piece 143 and the third arc-shaped piece 145 are smoothly connected to the catheter body 110 to ensure the smoothness inside the working channel 111, which is conducive to the passage of instruments or liquids. The first arc-shaped piece 143, the second arc-shaped piece 144, and the third arc-shaped piece 145 can be selected as an integrally molded structure, for example, by injection molding.

[0041] In some embodiments, the imaging probe 120 may be an IVUS probe and / or an OCT probe. That is, the IVUS probe may be integrated into the catheter body 110, or the OCT probe may be integrated into the catheter body 110, or both the IVUS probe and the OCT probe may be integrated into the catheter body 110. When both the IVUS probe and the OCT probe are integrated into the catheter body 110, the appropriate probe can be selected for operation as needed. Compared with a single type of imaging probe 120, the adaptability of the catheter can be effectively improved.

[0042] In some embodiments, the imaging probe 120 is detachably connected to the catheter body 110. For example, a smooth-walled imaging channel 130 can be designed on the side wall of the catheter body 110. During surgery, the surgeon can insert a standard-sized independent imaging catheter from the proximal end of the catheter into the imaging channel 130 until the distal end of the imaging catheter extends to the front end of the catheter body 110. The imaging catheter can be an IVUS imaging catheter or an OCT imaging catheter, which gives the surgeon the flexibility to choose different imaging technologies.

[0043] This invention also provides an interventional treatment system, including the vascular interventional catheter 100 with integrated real-time imaging function provided in any of the above embodiments. The proximal end of the catheter body 110 is provided with a working channel interface and an electrical interface. The working channel interface can be a Luer lock connector for connecting to a suction pump 300, a syringe, or serving as an inlet for other instruments. The electrical interface is a multi-core sealed connector for transmitting signals acquired by the imaging probe 120 to an external image processing host 200. Furthermore, an auxiliary interface can be provided at the distal end of the catheter body 110, for example, a pressure sensor can be installed at the auxiliary interface to detect the pressure within the working channel 111.

[0044] The following explanation uses the vascular interventional catheter 100 of the interventional therapy system as an example, specifically the aspiration catheter:

[0045] The guidewire is percutaneously inserted into the target blood vessel, passing over the thrombus lesion area. The cable of the vascular interventional catheter 100 is connected to the image processing host 200 via an electrical interface, and the inlet of the working channel 111 is connected to the negative pressure suction pump. The vascular interventional catheter 100 is then advanced into the blood vessel along the guidewire.

[0046] As the vascular interventional catheter 100 is advanced along the guidewire, the imaging probe 120 integrated at the distal end of the vascular interventional catheter 100 is controlled to operate, and the monitor displays a cross-sectional image of the catheter's vascular lumen in real time. The pushing force and angle are finely adjusted in real time based on the image to ensure that the distal end of the vascular interventional catheter 100 accurately reaches the thrombus surface.

[0047] Once the distal end of the vascular interventional catheter 100 is confirmed to be in contact with the thrombus on the imaging, the aspiration pump is activated to generate negative pressure for aspiration. The imaging probe 120 remains operational. The operator can simultaneously observe the dynamic process of the thrombus being aspirated into the working channel 111 on the monitor. For example, the clumpy echo of the thrombus can be observed to gradually decrease and disappear. At the same time, it can be confirmed whether the distal opening of the vascular interventional catheter 100 is adhered to the vessel wall, appearing as the lumen disappearing or deforming on the imaging. If adhesion to the wall occurs, the operator can adjust the position of the vascular interventional catheter 100 in a timely manner to ensure aspiration efficiency.

[0048] After a single aspiration procedure, the operator can immediately assess the current vascular cross-section using real-time imaging without moving the vascular interventional catheter 100. For example, if the imaging shows the thrombus echo has disappeared, the lumen of the vessel has been restored to patency, and the aspiration was successful. If significant residue is still visible, supplementary aspiration can be performed immediately in situ, or the catheter position can be slightly adjusted before aspiration is repeated. The entire process described above does not require removal of the vascular interventional catheter 100, exchange of instruments, or repositioning.

[0049] Once real-time imaging confirms that the thrombus in the target area has been cleared, the suction pump 300 can be turned off, and the vascular interventional catheter 100, along with any remaining debris inside, can be withdrawn from the body to complete the procedure.

[0050] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0051] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0052] The above provides a detailed description of the vascular interventional catheter 100 with integrated real-time imaging function and the interventional treatment system provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention, and the descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A vascular interventional catheter with integrated real-time imaging function, characterized in that, include: The catheter body (110) and the imaging probe (120) are provided. The catheter body (110) is provided with a working channel (111) extending along its axial direction. The imaging probe (120) is located on the side wall at the distal end of the catheter body (110). The imaging probe (120) is used to acquire image information inside the blood vessel in real time during the process of the catheter body (110) being inserted into the blood vessel. The catheter body (110) stops moving when it is inserted to the target lesion location. The working channel (111) is used for the working part to perform operations based on the image information acquired by the imaging probe (120).

2. The vascular interventional catheter with integrated real-time imaging function according to claim 1, characterized in that, The catheter body (110) is provided with an imaging channel (130) that is isolated from the working channel (111). The imaging channel (130) is used for the signal transmission line (121) to pass through. One end of the signal transmission line (121) is used to connect to the imaging probe (120), and the other end is used to connect to the image processing host (200).

3. The vascular interventional catheter with integrated real-time imaging function according to claim 2, characterized in that, The imaging channel (130) is an annular channel surrounding the working channel (111), and at least one imaging probe (120) is provided in the annular channel, with multiple imaging probes (120) distributed along the circumference of the annular channel.

4. The vascular interventional catheter with integrated real-time imaging function according to claim 2, characterized in that, The catheter body (110) is provided with a reinforcing rib (140), which divides its inner lumen into the working channel (111) and the imaging channel (130). The cross-sectional area of ​​the working channel (111) is larger than that of the imaging channel (130).

5. The vascular interventional catheter with integrated real-time imaging function according to claim 4, characterized in that, The reinforcing rib (140) includes a first reinforcing piece (141) and a second reinforcing piece (142). The first reinforcing piece (141) and the second reinforcing piece (142) are arranged at a preset angle. The first reinforcing piece (141), the second reinforcing piece (142), and part of the sidewall of the catheter body (110) surround the imaging channel (130).

6. The vascular interventional catheter with integrated real-time imaging function according to claim 4, characterized in that, The reinforcing rib (140) includes a first arc-shaped piece (143), a second arc-shaped piece (144), and a third arc-shaped piece (145). The recesses of the first arc-shaped piece (143) and the third arc-shaped piece (145) face the working channel (111), and the recesses of the second arc-shaped piece (144) face the imaging channel (130). The outer surface of the imaging probe (120) is attached to the concave surface of the second arc-shaped piece (144). The second arc-shaped piece (144) is smoothly connected to the first arc-shaped piece (143) and the third arc-shaped piece (145).

7. The vascular interventional catheter with integrated real-time imaging function according to claim 2, characterized in that, The imaging channel (130) is provided with a shielding layer, and the signal transmission line (121) passes through the shielding layer.

8. The vascular interventional catheter with integrated real-time imaging function according to claim 1, characterized in that, The imaging probe (120) is an IVUS probe and / or an OCT probe.

9. The vascular interventional catheter with integrated real-time imaging function according to claim 1, characterized in that, The imaging probe (120) is detachably connected to the catheter body (110).

10. An interventional therapy system, characterized in that, The vascular interventional catheter with integrated real-time imaging function as described in any one of claims 1 to 9.

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