Interventional blood vessel treatment system and blood vessel local imaging method

Abstract

The invention discloses an interventional blood vessel treatment system and a blood vessel local imaging method. The system comprises an interventional vascular treatment catheter module and a visualization processing module. The interventional vascular treatment catheter module comprises a balloon catheter and a multi-cavity optical fiber catheter; a blocking balloon is arranged at the tail end of the balloon catheter; the balloon catheter covers at least part of the multi-cavity optical fiber catheter; the multi-cavity optical fiber catheter comprises an optical fiber catheter body and at least one functional cavity. The optical fiber catheter body comprises a macromolecule outer layer, an optical fiber tissue layer and a macromolecule inner layer. The optical fiber tissue layer is arranged between the macromolecule outer layer and the macromolecule inner layer; the functional cavity is used for filling different functional liquids or different interventional therapy devices; and the visual processing module is used for collecting and forming a far-end target treatment area image according to the reflected light of the far-end target treatment area when the light source is transmitted to the far-end target treatment area through the optical fiber catheter body. According to the scheme, the size of other functional cavities is enlarged on the basis of real-time visualization, so that the treatment function is better completed.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of balloon catheters, and in particular to an interventional vascular treatment system and a vascular local imaging method. Background Art

[0002] The incidence of lower limb ASO (arteriosclerosis obliteran, ASO) in patients is increasing with age, becoming a problem that needs to be solved urgently in the current medical field; lower limb ASO refers to a chronic progressive disease caused by arteriosclerosis, which leads to thickening of the intima, stenosis or occlusion of the lumen of the lower limb blood supply artery, insufficient blood supply to the affected limb, and clinical manifestations such as intermittent claudication, hypothermia, pain, and even ulcers or necrosis of the lower limbs. It is often a manifestation of systemic arteriosclerotic vascular lesions in the lower limb arteries. The main cause of lower limb ASO is atherosclerosis.

[0003] The main methods of conventional treatment of lower limb ASO in clinical practice are: drug therapy and revascularization targeting cardiovascular risk factors, among which revascularization is divided into surgical treatment and endovascular treatment. Percutaneous balloon angioplasty, stent implantation, plaque removal, laser angioplasty, cutting balloon, drug balloon, cryoballoon, and drug thrombolysis or thrombectomy are all endovascular treatments. Usually, endovascular treatment requires auxiliary visualization technology to facilitate the operator to confirm the lesion and the location of the device intervention. In the process of visually confirming the surgeon's confirmation of the lesion and the location of the instrument intervention, a light source usually transmits light to the lesion and the location of the instrument intervention through an optical fiber in a catheter (the catheter is composed of a metal wire) to complete image acquisition; the most common technology is OCT (optical coherence tomography); OCT technology combines real-time intravascular imaging with therapeutic equipment. This technical route has some applications in medical imaging, but it also has some limitations in clinical use: on the one hand, the light source transmits light to the lesion and the location of the instrument intervention through an optical fiber in a catheter (the catheter is composed of a metal wire). When the catheter also includes other cavities, the volume of the other cavities will become smaller, which will affect the ability of the therapeutic equipment in the cavity to complete the therapeutic function. Summary of the invention

[0004] The present invention provides an interventional vascular treatment system and a vascular local imaging method, so as to directly replace the catheter with an optical fiber catheter, thereby increasing the volume of other cavities on the basis of real-time visualization, thereby better completing the treatment function.

[0005] To achieve the above objectives, in a first aspect, an embodiment of the present invention provides an interventional vascular treatment system, the system comprising: an interventional vascular treatment catheter module and a visualization processing module;

[0006] The interventional vascular treatment catheter module includes a balloon catheter and a multi-lumen optical fiber catheter; a blocking balloon is arranged at the end of the balloon catheter; the balloon catheter covers at least a portion of the multi-lumen optical fiber catheter;

[0007] The multi-lumen optical fiber catheter comprises an optical fiber catheter body and at least one functional cavity; the optical fiber catheter body comprises a polymer outer layer, an optical fiber tissue layer and a polymer inner layer; the optical fiber tissue layer is arranged between the polymer outer layer and the polymer inner layer; the functional cavity is used to be filled with different functional fluids or different interventional treatment devices;

[0008] The visualization processing module is used to collect and form an image of the distal target treatment area based on the reflected light of the distal target treatment area when the light source is transmitted to the distal target treatment area through the optical fiber catheter body.

[0009] Optionally, the optical fiber tissue layer includes an optical fiber braided layer and / or an optical fiber spring wound layer;

[0010] The optical fiber braided layer comprises a plurality of optical fibers; each of the optical fibers is braided to form the optical fiber braided layer;

[0011] The optical fiber spring winding layer includes a plurality of optical fibers; each of the optical fibers is wound to form the optical fiber spring winding layer.

[0012] Optionally, the visualization processing module includes a remote photosensitive component, an image processing unit, a near-end imaging control unit and a light source control unit; the remote photosensitive component includes a lens component, an image sensor and a photosensitive signal line; the photosensitive signal line runs through the functional cavity;

[0013] The proximal imaging control unit is used to control the operation of the image sensor;

[0014] The light source control unit is used to control the light source to be transmitted to the distal target treatment area through the optical fiber catheter body;

[0015] The lens assembly is used to refract the reflected light from the distal target treatment area to the image sensor;

[0016] The image processing unit is used to process and display the image information collected by the image sensor through the photosensitive signal line.

[0017] Optionally, the system further comprises: a blood diluent module; the multi-lumen optical fiber catheter further comprises a liquid inlet cavity and a liquid discharge cavity;

[0018] The blood diluent module is used to provide blood diluent to the liquid inlet cavity; and is also used to collect liquid discharged from the liquid discharge cavity.

[0019] Optionally, the blood dilution module includes a liquid-driven pump;

[0020] The first output side of the liquid-driven pump is in communication with the liquid inlet chamber, and is used to pump the blood diluent inputted from the first input side of the liquid-driven pump into the liquid inlet chamber;

[0021] The second input side of the liquid-driven pump is in communication with the liquid-discharging chamber, and is also used to pump the liquid discharged from the liquid-discharging chamber into the waste liquid collecting unit through the second output side of the liquid-driven pump.

[0022] Optionally, the blood diluent includes sterile saline, heparin solution and glucose solution.

[0023] Optionally, the blood diluent includes a thrombolytic agent; the thrombolytic agent includes one or more of urokinase, lumbrokinase, streptokinase, nattokinase, and tissue plasminogen activator.

[0024] Optionally, the balloon catheter comprises an exchange port; the multi-lumen optical fiber catheter enters from the exchange port and exits from the distal end of the balloon catheter;

[0025] The balloon catheter covers a portion of the multi-lumen optical fiber catheter.

[0026] Optionally, the balloon catheter covers the multi-lumen fiber optic catheter.

[0027] Optionally, the occluding balloon includes a super-compliant occluding balloon.

[0028] In a second aspect, an embodiment of the present invention further provides a method for local blood vessel imaging, which is applied to the interventional vascular treatment system described in the first aspect above; the method for local blood vessel imaging includes:

[0029] An external balloon inflation device applies pressure to the proximal end of the balloon catheter to expand the occluding balloon at the distal end of the balloon catheter;

[0030] Controlling the light source to be transmitted to the distal target treatment area through the optical fiber catheter body;

[0031] The visualization processing module collects and forms an image of the distal target treatment area according to the reflected light of the distal target treatment area, so as to push different functional fluids or different interventional treatment devices to the distal target treatment area through the functional cavity according to the image of the distal target treatment area.

[0032] Optionally, the interventional vascular treatment system further comprises: a blood diluent module; the multi-lumen optical fiber catheter further comprises a liquid inlet cavity and a liquid discharge cavity;

[0033] Before controlling the light source to be transmitted to the distal target treatment area through the optical fiber catheter body, the method further comprises:

[0034] The blood diluent module continuously provides blood diluent into the liquid inlet chamber to release the blood between the distal target treatment area and the occluding balloon, and collects the liquid discharged from the liquid discharge chamber.

[0035] In an embodiment of the present invention, when an external balloon filling device applies pressure to the proximal end of the balloon catheter to expand the blocking balloon at the end of the balloon catheter, the fiber optic catheter body is directly made into a catheter, so that when the light source is transmitted to the distal target treatment area through the fiber optic catheter body, the visualization processing module collects and forms an image of the distal target treatment area based on the reflected light of the distal target treatment area; at the same time, since the fiber optic catheter body is directly made into a catheter, rather than inserting an optical fiber into a metal catheter to realize light propagation, the volume of other functional cavities becomes larger, so that when different functional fluids or different interventional treatment devices are filled in the functional cavity, the treatment function can be better completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a structural schematic diagram of an interventional vascular treatment system provided by an embodiment of the present invention;

[0037] Figure 2 is a cross-sectional view of the interventional vascular treatment system along the AA' direction according to an embodiment of the present invention;

[0038] Figure 3 is a cross-sectional view along the BB' direction on the multi-lumen optical fiber catheter in an embodiment of the present invention;

[0039] Figure 4 is another cross-sectional view along the BB' direction on the multi-lumen optical fiber catheter in an embodiment of the present invention;

[0040] Figure 5 is another cross-sectional view along the BB' direction on the multi-lumen optical fiber catheter in an embodiment of the present invention;

[0041] Figure 6 is a specific structural diagram of a visualization processing module provided by an embodiment of the present invention;

[0042] Figure 7 is a structural schematic diagram of another interventional vascular treatment system provided by an embodiment of the present invention;

[0043] Figure 8 is a cross-sectional view of the interventional vascular treatment system along CC' provided in an embodiment of the present invention;

[0044] Fig. 9 is a schematic diagram of a specific structure of a blood dilution module provided by an embodiment of the present invention;

[0045] Fig.10 is a structural schematic diagram of another interventional vascular treatment system provided by an embodiment of the present invention;

[0046] Fig.11 is a flow chart of a method for local blood vessel imaging provided by an embodiment of the present invention;

[0047] Fig.12 It is a flowchart of another method for local blood vessel imaging provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0049] Figure 1 is a structural schematic diagram of an interventional vascular treatment system provided by an embodiment of the present invention; Figure 2 is a cross-sectional view of the interventional vascular treatment system along the AA' direction in an embodiment of the present invention; Figure 1-2 As shown, the system includes: an interventional vascular treatment catheter module 10 and a visualization processing module 20;

[0050] The interventional vascular treatment catheter module 10 includes a balloon catheter 11 and a multi-lumen optical fiber catheter 12; a blocking balloon 111 is provided at the end of the balloon catheter 11; the balloon catheter 11 covers at least a portion of the multi-lumen optical fiber catheter 12;

[0051] The multi-lumen optical fiber catheter 12 includes an optical fiber catheter body 121 and at least one functional cavity 122; the optical fiber catheter body 121 includes a polymer outer layer 1211, an optical fiber tissue layer 1212 and an inner polymer layer 1213; the optical fiber tissue layer 1212 is disposed between the outer polymer layer 1211 and the inner polymer layer 1213; the functional cavity 122 is used to be filled with different functional fluids or different interventional treatment devices;

[0052] The visualization processing module 20 is used to collect and form an image of the distal target treatment area according to the reflected light of the distal target treatment area when the light source is transmitted to the distal target treatment area through the optical fiber catheter body 121.

[0053] Among them, the blocking balloon 111 includes an ultra-compliant blocking balloon; the ultra-compliant blocking balloon is a balloon body whose expansion volume is within a preset volume range under a certain pressure; the blocking balloon 111 is arranged at the end of the balloon catheter 11, so that when an external balloon filling device applies pressure to the proximal end of the balloon catheter 11, the blocking balloon 111 at the end of the balloon catheter expands, so that the blocking balloon 111 and the target treatment area (i.e., the lesion embolization area) form a closed area, which can block the blood in the lesion and reduce the amount of blood loss during treatment.

[0054] The polymer outer layer 1211 in the optical fiber catheter body 121 can be made of TPU, TPE, polyamide, polyimide, elastic polyurethane, nylon, polyethylene terephthalate (PET), polytetrafluoroethylene, perfluoroethylene propylene copolymer and / or polyetheretherketone; the polymer inner layer 1213 can be made of polymer materials such as PTFE film; it can increase lubricity while reducing the catheter wall thickness.

[0055] The optical fiber tissue layer 1212 in the optical fiber catheter body 121 can be formed by different single-mode optical fibers or multi-mode optical fibers in different forms; the optical fiber catheter body 121 composed of the optical fiber tissue layer 1212 can realize the functions of catheter support and light propagation; in addition, since the optical fiber catheter body 121 in this embodiment replaces the traditional metal catheter, the optical fiber is integrated into the metal catheter to realize the structure of light propagation, which reduces the volume occupied by other functional cavities 122.

[0056] The functional cavity 122 can be filled with different functional fluids or different interventional treatment devices; illustratively, the interventional treatment device can be a thrombus excision instrument, which includes a blade, a drive shaft and an extracorporeal drive device. The thrombus excision instrument is pushed from the proximal end to the end of the multi-lumen fiber optic catheter 12 through the functional cavity 122 until the blade extends from the functional cavity 122 to the lesion embolism area. The drive shaft and the blade are powered by the extracorporeal drive device, and rotate at a speed of 40,000 rpm to 60,000 rpm to clear the lesion embolism area. In this embodiment, the number of functional cavities 122 is not specifically limited; it can be set according to actual treatment needs; the functional fluid is a liquid that has a therapeutic effect on the lesion embolism area.

[0057] Specifically, when the external balloon filling device applies pressure to the proximal end of the balloon catheter 11 to expand the occluding balloon 111 at the end of the balloon catheter 11, the optical fiber catheter body 121 is directly made into a catheter. In this way, when the light source is transmitted to the distal target treatment area through the optical fiber catheter body 121, the visualization processing module 20 collects and forms an image of the distal target treatment area based on the reflected light of the distal target treatment area, which is conducive to accurately positioning and operating the target treatment area, thereby improving the effectiveness of subsequent treatment measures; at the same time, since the optical fiber catheter body 121 is directly made into a catheter, rather than inserting an optical fiber into a metal catheter to realize light propagation, the volume of other functional cavities becomes larger, so that when different functional fluids or different interventional treatment devices are filled in the functional cavity 122, the treatment function can be better completed.

[0058] Optionally, based on the above embodiment, the optical fiber tissue layer 122 is further refined. Figure 3 is a cross-sectional view along the BB' direction on the multi-lumen optical fiber catheter in an embodiment of the present invention; Figure 4 is another cross-sectional view along the BB' direction on the multi-lumen optical fiber catheter in an embodiment of the present invention; Figure 5is another cross-sectional view along the BB' direction on the multi-lumen optical fiber catheter in an embodiment of the present invention; Figure 3-5 As shown, the optical fiber organization layer 1212 includes an optical fiber braided layer 12121 and / or an optical fiber spring wound layer 12122; the optical fiber braided layer 12121 includes a plurality of optical fibers; each optical fiber forms the optical fiber braided layer 12121 in a braided form; the optical fiber spring wound layer 12122 includes a plurality of optical fibers; each optical fiber forms the optical fiber spring wound layer 12122 in a wound form.

[0059] The optical fiber braided layer 12121 includes a plurality of optical fibers, and exemplarily, 16-24 optical fibers are used as braiding wires to form the optical fiber braided layer 12121, which can realize the catheter support and play the role of light propagation; the optical fiber spring layer 12122 includes a plurality of optical fibers, and exemplarily, 16-24 optical fibers are used as spring wires to form the optical fiber spring layer in a winding form, which can realize the catheter support and play the role of light propagation;

[0060] In some embodiments, the optical fiber braided layer 12121 can increase the number of optical fiber heads and the braiding density or set a multi-head optical fiber winding spring layer inside the optical fiber braided layer, so that the optical fiber braided layer can enhance the illumination and obtain a clearer image; it also further avoids the problem of traditional optical fiber catheters sacrificing the catheter cavity volume to enhance illumination.

[0061] Optionally, based on the above embodiment, the visualization processing module 20 is further refined. Figure 6 is a specific structural diagram of a visualization processing module provided by an embodiment of the present invention; Figure 6 As shown, the visualization processing module 20 includes a distal photosensitive component 21, an image display unit 22, a proximal imaging control unit 23 and a light source control unit 24; the distal photosensitive component 21 includes a lens component 211, an image sensor 212 and a photosensitive signal line 213; the photosensitive signal line 213 runs through the functional cavity 122 ( Figure 4 not shown);

[0062] A light source control unit 24, used to control the light source to be transmitted to the distal target treatment area through the optical fiber catheter body 121;

[0063] The lens assembly 211 is used to refract the reflected light from the distal target treatment area to the image sensor 212; the proximal imaging control unit 23 is used to control the operation of the image sensor 212;

[0064] The image processing unit 22 is used to process and display the image information collected by the image sensor 222 through the light-sensitive signal line 213 .

[0065] Among them, the lens assembly 211 plays a role in enhancing light focusing; after receiving the command signal, the light source control unit 24 controls the light source to be transmitted to the distal target treatment area through the optical fiber catheter body 121; the lens assembly 211 refracts the reflected light from the distal target treatment area to the image sensor 212; at this time, the proximal imaging control unit 23 controls the image sensor 212 to work, and the image sensor 212 performs real-time acquisition of image information, and the image sensor 212 sends the acquired image information to the image processing unit 22 through the photosensitive signal line, and the image processing unit 22 processes and displays the acquired image information, such as color separation processing, matrix processing, etc.; preferably, the light source control unit 24 and the image processing unit 22 can be arranged at the proximal position of the multi-lumen optical fiber catheter 12, and the other units in the visualization processing module 20 are arranged at the distal position of the multi-lumen optical fiber catheter 12, which is conducive to the visualization effect of the visualization processing module 20, and the target treatment area information can be obtained in time, thereby improving the safety and effectiveness of the treatment.

[0066] Optionally, based on the above embodiment, the interventional vascular treatment system is further optimized. Figure 7 is a structural schematic diagram of another interventional vascular treatment system provided by an embodiment of the present invention; Figure 8 is a cross-sectional view of the interventional vascular treatment system along CC' provided in an embodiment of the present invention; Figure 7-8 As shown, the system also includes: a blood diluent module 30; the multi-lumen optical fiber catheter 12 also includes a liquid inlet cavity 123 and a liquid discharge cavity 124; the blood diluent module 30 is used to provide blood diluent to the liquid inlet cavity 123; and is also used to collect liquid discharged from the liquid discharge cavity 124.

[0067] Among them, when the external balloon filling device applies pressure to the proximal end of the balloon catheter 11 to expand the blocking balloon 111 at the end of the balloon catheter 11, the blood in the blocking area will affect the illumination effect of the target treatment area to a certain extent, resulting in the light from the light source being transmitted to the distal target treatment area through the optical fiber catheter body 121. The light reflected from the distal target treatment area is refracted to the image sensor 212 to a certain extent. The image clarity of the distal target treatment area formed in this way is low; this embodiment adds a liquid diluent module 30 The multi-lumen optical fiber catheter 12 also includes a liquid inlet cavity 123 and a liquid discharge cavity 124. When the blocking balloon 111 is expanded, the liquid diluent module 30 can provide blood diluent to the liquid inlet cavity 123. The blood diluent is infused from the liquid inlet cavity 123 to the blocking area. The blood diluent dilutes the blood in the blocking area. Then the blood diluent module 30 collects the liquid discharged from the liquid discharge cavity 124 to the external waste liquid bag. In this way, a local flushing liquid circulation is formed in the blocking area, which improves the transparency of the blood flow in the blocking area, reduces the interference of blood on the image formation, and further improves the clarity of the image. In addition, since different interventional treatment devices can be filled in the functional cavity 122, such as the interventional treatment device is a thrombus excision device, when the blade cuts the lesion, the blood diluent module 30 can also take away some of the broken thrombi to prevent the broken thrombi from blocking the tube. Furthermore, the blood diluent module 30 is integrated into the interventional vascular treatment system. The integrated interventional vascular treatment system reduces the time required to replace the device or use additional equipment, thereby improving the treatment efficiency and shortening the treatment time.

[0068] It should be noted that the blood diluent includes sterile physiological saline, heparin solution and glucose solution; or, the blood diluent includes a thrombolytic agent; the thrombolytic agent includes one or more of urokinase, lumbrokinase, streptokinase, nattokinase and tissue plasminogen activator. This embodiment does not specifically limit the type of blood diluent.

[0069] Optional, Fig. 9 is a schematic diagram of a specific structure of a blood dilution module provided by an embodiment of the present invention; Fig. 9 As shown, the blood dilution module 30 includes a liquid driven pump 31; a first output side of the liquid driven pump 31 is connected to the liquid inlet chamber 123, and is used to pump the blood diluent input by the first input side of the liquid driven pump 31 into the liquid inlet chamber 123; a second input side of the liquid driven pump 31 is connected to the liquid discharge chamber 124, and is also used to pump the liquid discharged from the liquid discharge chamber 124 into the waste liquid collection unit through the second output side of the liquid driven pump 31.

[0070] The liquid driving pump 31 may be a peristaltic perfusion pump; the flow rate Q of the peristaltic perfusion pump satisfies the following formula:

[0071] Q=V×N

[0072] Where: Q is the flow rate (usually in milliliters per minute mL / min); V is the volume of liquid pumped per revolution (related to the inner diameter of the pipeline and the number of blocks); N is the speed of the peristaltic perfusion pump (usually in revolutions per minute rpm); Assume: the spatial volume of the blocked area is A, and it is expected that liquid exchange will be completed within T minutes, then the pump speed N ≥ A / NT. According to different blocked area volumes and replacement times, the pump speed is adjusted to achieve the flushing fluid perfusion rate.

[0073] Optionally, the positional relationship between the balloon catheter 11 and the multi-lumen optical fiber catheter 12 is described below; in some embodiments, such as Figure 1 As shown, the balloon catheter 11 completely covers the multi-lumen optical fiber catheter 12; thus, the expansion of the blocking balloon 111 at the end of the balloon catheter 11 and the light propagation of the multi-lumen optical fiber catheter 12 do not affect each other.

[0074] In other embodiments, Fig.10 FIG. 1 is a schematic diagram of the structure of another interventional vascular treatment system provided by an embodiment of the present invention; Fig.10 As shown, the balloon catheter 11 includes an exchange port A; the multi-lumen fiber optic catheter 12 enters from the exchange port A and passes out from the distal end of the balloon catheter 11; wherein, the multi-lumen fiber optic catheter 12 enters from the exchange port A and passes out from the distal end of the balloon catheter 11, so that the balloon catheter 11 covers a portion of the multi-lumen fiber optic catheter 12.

[0075] Based on the same inventive concept, the embodiment of the present invention further provides a method for local imaging of blood vessels, which is applied to the above Figure 1-2 The interventional vascular treatment system of the embodiment; Fig.11 is a flow chart of a method for local blood vessel imaging provided by an embodiment of the present invention; Fig.11 As shown, the method specifically comprises the following steps:

[0076] S110. The external balloon filling device applies pressure to the proximal end of the balloon catheter to expand the occluding balloon at the distal end of the balloon catheter.

[0077] S120, controlling the light source to be transmitted to the distal target treatment area through the optical fiber catheter body.

[0078] S130, the visualization processing module collects and forms an image of the distal target treatment area according to the reflected light of the distal target treatment area, and pushes different functional fluids or different interventional treatment devices to the distal target treatment area through the functional cavity according to the image of the distal target treatment area.

[0079] In this embodiment, when the external balloon filling device applies pressure to the proximal end of the balloon catheter to expand the blocking balloon at the end of the balloon catheter, when the light source is transmitted to the distal target treatment area through the optical fiber catheter body, the visualization processing module collects and forms an image of the distal target treatment area based on the reflected light from the distal target treatment area, which is conducive to accurately positioning and operating the target treatment area, thereby improving the effectiveness of subsequent treatment measures; at the same time, since the optical fiber catheter body is directly made into a catheter, rather than inserting an optical fiber into a metal catheter to realize light propagation, the volume of other functional cavities becomes larger, so that when different functional fluids or different interventional treatment devices are filled in the functional cavity, the treatment function can be better completed.

[0080] Optionally, further optimization is performed based on the above method implementation example, and the method embodiment is applied to Figure 5-6 The interventional vascular therapy system shown; Fig.12 is a flow chart of a method for local blood vessel imaging provided by an embodiment of the present invention; Fig.12 As shown, the method specifically comprises the following steps:

[0081] S210, the external balloon filling device applies pressure to the proximal end of the balloon catheter to expand the occluding balloon at the end of the balloon catheter.

[0082] S220, the blood diluent module continuously provides blood diluent into the liquid inlet chamber to release the blood between the distal target treatment area and the occluding balloon, and collects the liquid discharged from the liquid discharge chamber.

[0083] S230, controlling the light source to be transmitted to the distal target treatment area through the optical fiber catheter body.

[0084] S240, the visualization processing module collects and forms an image of the distal target treatment area according to the reflected light of the distal target treatment area, and pushes different functional fluids or different interventional treatment devices to the distal target treatment area through the functional cavity according to the image of the distal target treatment area.

[0085] In this embodiment, on the basis of the above-mentioned embodiments, after the occlusion balloon is expanded, the blood diluent module can continuously provide blood diluent to the liquid inlet cavity, and the blood diluent is infused from the liquid inlet cavity to the occlusion area, and the blood diluent dilutes the blood in the occlusion area. Then the blood diluent module collects the liquid discharged from the liquid discharge cavity to the external waste liquid bag, so that a local flushing liquid circulation is formed in the occlusion area, thereby improving the transparency of the blood flow in the occlusion area, reducing the interference of blood on the image formation, and further improving the clarity of the image; in addition, according to the image of the distal target treatment area, after pushing different functional liquids or different interventional treatment devices to the distal target treatment area through the functional cavity, the blood diluent module can continuously provide blood diluent to the liquid inlet cavity, and the blood diluent is infused from the liquid inlet cavity to the occlusion area, which can take away the broken thrombus during the treatment of the interventional treatment device, and also improve the treatment effect.

[0086] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An interventional vascular treatment system, characterized in that: include: Interventional vascular therapy catheter module and visualization processing module; The interventional vascular treatment catheter module includes a balloon catheter and a multi-lumen optical fiber catheter; a blocking balloon is arranged at the end of the balloon catheter; the balloon catheter covers at least a portion of the multi-lumen optical fiber catheter; The multi-lumen optical fiber catheter comprises an optical fiber catheter body and at least one functional cavity; the optical fiber catheter body comprises a polymer outer layer, an optical fiber tissue layer and a polymer inner layer; the optical fiber tissue layer is arranged between the polymer outer layer and the polymer inner layer; the functional cavity is used to be filled with different functional fluids or different interventional treatment devices; The visualization processing module is used to collect and form an image of the distal target treatment area based on the reflected light of the distal target treatment area when the light source is transmitted to the distal target treatment area through the optical fiber catheter body.

2. The interventional vascular treatment system according to claim 1, characterized in that: The optical fiber tissue layer includes an optical fiber braided layer and / or an optical fiber spring wound layer; The optical fiber braided layer comprises a plurality of optical fibers; each of the optical fibers is braided to form the optical fiber braided layer; The optical fiber spring winding layer includes a plurality of optical fibers; each of the optical fibers is wound to form the optical fiber spring winding layer.

3. The interventional vascular treatment system according to claim 1, characterized in that: The visualization processing module includes a remote photosensitive component, an image processing unit, a near-end imaging control unit and a light source control unit; the remote photosensitive component includes a lens component, an image sensor and a photosensitive signal line; the photosensitive signal line runs through the functional cavity; The proximal imaging control unit is used to control the operation of the image sensor; The light source control unit is used to control the light source to be transmitted to the distal target treatment area through the optical fiber catheter body; The lens assembly is used to refract the reflected light from the distal target treatment area to the image sensor; The image processing unit is used to process and display the image information collected by the image sensor through the photosensitive signal line.

4. The interventional vascular treatment system according to any one of claims 1 to 3, characterized in that: Also includes: Blood diluent module; The multi-lumen optical fiber catheter also includes a liquid inlet cavity and a liquid discharge cavity; The blood diluent module is used to provide a blood diluent into the liquid inlet chamber; It is also used to collect liquid discharged from the drainage cavity.

5. The interventional vascular treatment system according to claim 4, characterized in that: The blood dilution module includes a liquid-driven pump; The first output side of the liquid-driven pump is in communication with the liquid inlet chamber, and is used to pump the blood diluent inputted from the first input side of the liquid-driven pump into the liquid inlet chamber; The second input side of the liquid-driven pump is in communication with the liquid-discharging chamber, and is also used to pump the liquid discharged from the liquid-discharging chamber into the waste liquid collecting unit through the second output side of the liquid-driven pump.

6. The interventional vascular treatment system according to claim 4, characterized in that: The blood diluent includes sterile physiological saline, heparin solution and glucose solution.

7. The interventional vascular treatment system according to claim 4, characterized in that: The blood diluent includes a thrombolytic agent; the thrombolytic agent includes one or more of urokinase, lumbrokinase, streptokinase, nattokinase, and tissue plasminogen activator.

8. The interventional vascular treatment system according to claim 1, characterized in that: The balloon catheter comprises an exchange port; the multi-lumen optical fiber catheter enters from the exchange port and passes out from the distal end of the balloon catheter; The balloon catheter covers a portion of the multi-lumen optical fiber catheter.

9. The interventional vascular treatment system according to claim 1, characterized in that: The balloon catheter covers the multi-lumen optical fiber catheter.

10. The interventional vascular treatment system according to claim 1, characterized in that: The occluding balloon comprises an ultra-compliant occluding balloon.

11. A method for local imaging of blood vessels, characterized in that: The interventional vascular treatment system according to any one of claims 1 to 10 above; the local vascular imaging method comprises: An external balloon inflation device applies pressure to the proximal end of the balloon catheter to expand the occluding balloon at the distal end of the balloon catheter; Controlling the light source to be transmitted to the distal target treatment area through the optical fiber catheter body; The visualization processing module collects and forms an image of the distal target treatment area according to the reflected light of the distal target treatment area, so as to push different functional fluids or different interventional treatment devices to the distal target treatment area through the functional cavity according to the image of the distal target treatment area.

12. The method for local blood vessel imaging according to claim 11, characterized in that: The interventional vascular treatment system further comprises: a blood diluent module; the multi-lumen optical fiber catheter further comprises a liquid inlet cavity and a liquid discharge cavity; Before controlling the light source to be transmitted to the distal target treatment area through the optical fiber catheter body, the method further comprises: The blood diluent module continuously provides blood diluent into the liquid inlet chamber to release the blood between the distal target treatment area and the occluding balloon, and collects the liquid discharged from the liquid discharge chamber.

Images