Shock wave balloon and laser medical system

Abstract

The invention discloses a shock wave balloon and a laser medical system. The shock wave balloon comprises a balloon catheter which at least comprises a guide wire cavity, a liquid inlet cavity, a liquid outlet cavity and a plurality of optical fiber cavities. The liquid inlet cavity, the liquid outlet cavity and the optical fiber cavities are distributed around the guide wire cavity around the central axis of the guide wire cavity, and an annular clamping groove is formed in the outer wall of the balloon catheter and communicated with the optical fiber cavities. The balloon is arranged on the outer side of the balloon catheter in a sleeving mode, wraps the annular clamping groove in a sealed mode and communicates with the liquid inlet cavity and the liquid outlet cavity so as to be used for liquid circulation; the multiple optical fibers are arranged in the multiple optical fiber cavities in a penetrating mode respectively, the laser emitting end of each optical fiber is located in the annular clamping groove and used for laser conduction, and therefore the laser cavitation effect is generated in the balloon. The shock wave balloon provided by the invention is good in trafficability, and can enter a lesion blood vessel part very smoothly, so that the convenience of an interventional operation is improved.

Description

Technical Field

[0001] This invention relates to a shockwave balloon, and also to a laser medical system using the shockwave balloon, belonging to the field of medical device technology. Background Technology

[0002] Vascular calcification is a disease affecting the entire vascular system, characterized by uneven mineral deposits, such as hydroxyapatite, within the vessel walls. This lesion can occur in different locations, including the intima and media of blood vessels, and involves multiple cell types, including vascular smooth muscle cells, endothelial cells, pericytes, macrophages, and bone marrow-derived mesenchymal stem cells. The extracellular matrix, especially basement membrane proteins, also plays a crucial role in the development of vascular calcification. The interaction of these cellular and non-cellular components leads to the deposition of calcified substances in the vessel walls, reducing vascular elasticity and impairing the integrity of vascular structure, potentially triggering serious health problems such as cardiovascular disease, chronic kidney disease, and stroke.

[0003] Vascular calcification is commonly associated with diseases such as atherosclerosis, hypertension, diabetes, aging, and chronic kidney disease, with coronary artery calcification being the most common form. This lesion increases the risk of cardiovascular disease, chronic kidney disease, and stroke, thus attracting widespread attention from the global medical community. In interventional treatment, coronary artery calcification is particularly difficult to manage, often referred to as "the hardest bone" or "the most fortress." Traditional treatment methods, such as high-pressure balloons, cutting balloons, spinous process balloons, and plaque rotational atherectomy / pectomy, have limitations, especially in treating medial calcification, eccentric calcified nodules, or severe calcification.

[0004] To overcome these challenges, intravascular coronary lithotripsy (IVL) systems were developed. This innovative treatment method improves vascular compliance by delivering non-focused, circular, and pulsed shock waves to the site of calcified lesions, fracturing superficial and deep calcified plaques. While IVL systems offer new clinical treatment options, they also have limitations, such as a limit to the number of uses during treatment, the inability to use them indefinitely, and the need for specific usage conditions and technical training. Summary of the Invention

[0005] The primary technical problem to be solved by this invention is to provide a shockwave balloon.

[0006] Another technical problem to be solved by the present invention is to provide a laser medical system using the shockwave balloon.

[0007] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0008] According to a first aspect of the present invention, a shockwave balloon is provided, comprising:

[0009] A balloon catheter includes at least a guidewire lumen, an inlet lumen, an outlet lumen, and multiple fiber optic cavities; wherein the inlet lumen, the outlet lumen, and the multiple fiber optic cavities are distributed around the central axis of the guidewire lumen, and an annular groove is formed on the outer wall of the balloon catheter, and the annular groove is connected to the multiple fiber optic cavities.

[0010] A balloon is fitted over the outside of the balloon catheter and seals the annular groove; wherein the inlet chamber and the outlet chamber are respectively connected to the balloon for fluid circulation;

[0011] Multiple optical fibers are respectively inserted into the multiple optical fiber cavities, and the laser emission end of each optical fiber is located in the annular slot, so as to continuously transmit laser of a preset wavelength into the balloon, thereby generating a laser cavitation effect in the balloon.

[0012] Preferably, the balloon comprises:

[0013] An inner balloon is fitted over the outside of the balloon catheter and seals the annular groove.

[0014] An outer balloon is fitted over the outer side of the inner balloon and seals and encloses the inner balloon.

[0015] The inlet chamber includes a first inlet chamber and a second inlet chamber, and the outlet chamber includes a first outlet chamber and a second outlet chamber; the first inlet chamber and the first outlet chamber are respectively connected to the inner balloon, and the second inlet chamber and the second outlet chamber are respectively connected to the outer balloon.

[0016] Preferably, the outer surface of the external balloon is provided with a plurality of rigid protrusions of a predetermined shape for contacting the hardened plaque, thereby applying pressure to the hardened plaque;

[0017] The preset shape includes at least a dot or a line shape, and the rigid protrusion includes at least a rigid polymer structure, metal particles, or metal wire.

[0018] Preferably, each of the optical fibers has a different installation orientation, so that each of the optical fibers forms a different angle with the central axis of the balloon catheter;

[0019] Furthermore, each of the optical fibers can be rotatably inserted into the optical fiber cavity to adjust the angle formed between the optical fiber and the central axis of the balloon catheter.

[0020] Preferably, the laser emitting ends of the plurality of optical fibers are located in different planes, and each optical fiber can be telescopically inserted into the optical fiber cavity to adjust the position of the laser emitting end of each optical fiber.

[0021] Preferably, the laser emitting end of the optical fiber is a plane, a concave-convex surface, or an inclined surface;

[0022] The laser emission end of the optical fiber emits a spot shape that is dot-shaped, ring-shaped, or a preset shape.

[0023] Preferably, each of the balloons has a developing section made of a developing material to indicate the location of the balloon.

[0024] Preferably, the preset wavelength range of the laser is 193nm to 20μm, and more preferably 1940nm.

[0025] Preferably, a plurality of balloons are spaced apart along the length of the balloon catheter, and an annular groove is formed on the balloon catheter at a position corresponding to each of the balloons;

[0026] The multiple optical fibers are retractably inserted into the multiple optical fiber cavities, and each annular slot corresponds to the laser emission end of at least one of the optical fibers.

[0027] According to a second aspect of the present invention, a laser medical system is provided, comprising:

[0028] A laser generator is used to generate laser light of a preset wavelength.

[0029] The aforementioned shockwave balloon, wherein each optical fiber in the shockwave balloon is connected to the laser generator;

[0030] A controller, connected to the laser generator, is used to control the laser generator to emit laser light of a preset wavelength, thereby transmitting the laser light into the balloon through each of the optical fibers to generate a laser cavitation effect within the balloon.

[0031] Compared with the prior art, the present invention has the following technical effects:

[0032] (1) The shockwave balloon has good permeability, allowing it to smoothly enter the diseased blood vessel site, thus improving the convenience of interventional surgery. Furthermore, this shockwave balloon achieves impact on calcified plaques through a laser cavitation effect within the balloon. Even if multiple shockwaves are generated during the same procedure, the balloon itself will not be damaged, nor will it damage the blood vessels or other tissues. Therefore, the number of shockwave releases can be freely adjusted according to the different needs of each procedure, without considering the upper limit (generally no more than 100 pulses) of traditional shockwave balloon catheter release pulses.

[0033] (2) Compared with the traditional method of directly using balloon pressure expansion to crack calcified plaques, the shock wave generated by the laser cavitation effect in this embodiment of the invention has a relatively gentle and stable impact on calcified plaques (the high-pressure electrohydraulic cavitation effect is affected by the electrolytic effect of the number of electrode discharges and will gradually decrease in effectiveness), and will not cause damage to blood vessels due to excessive pressure expansion.

[0034] (3) It is easy to operate, without complicated operating procedures or special training, making it more friendly to novice doctors and conducive to its widespread application.

[0035] (4) It has a simple structure, low price, and is suitable for mass production. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a shock wave balloon provided in the first embodiment of the present invention;

[0037] Figure 2 This is a cross-sectional view of the balloon catheter in the first embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of generating cavitation bubbles at the laser emission end of an optical fiber in the first embodiment of the present invention.

[0039] Figure 4 This is a schematic diagram illustrating how the shock wave spreads outwards as the cavitation bubble expands, as described in the first embodiment of the present invention.

[0040] Figure 5 This is a schematic diagram illustrating how the shock wave converges towards the center of the cavitation bubble as the cavitation bubble annihilates, as described in the first embodiment of the present invention.

[0041] Figure 6 This is a schematic diagram illustrating how, in the first embodiment of the present invention, the shock wave converges towards the center of the cavitation bubble and then diffuses again as the cavitation bubble is annihilated.

[0042] Figure 7 This is a schematic diagram illustrating the generation of multiple cavitation bubbles at the laser emission ends of multiple optical fibers in the first embodiment of the present invention.

[0043] Figure 8 This is a schematic diagram of the structure of a shock wave balloon provided in the second embodiment of the present invention;

[0044] Figure 9 This is a schematic diagram of a laser medical system provided in the third embodiment of the present invention. Detailed Implementation

[0045] The technical content of the present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0046] Optical breakdown is a physical phenomenon. When a high-energy laser pulse acts on a transparent dielectric material, such as an optical component, local ionization occurs within the material, forming plasma. This process is called optical breakdown or laser-induced breakdown. This phenomenon is commonly referred to as "optical breakdown," and it involves the rapid energy conversion during the interaction between the laser and the material, leading to localized damage to the material.

[0047] In this regard, embodiments of the present invention provide an innovative shockwave balloon. This balloon transmits a laser of a specific wavelength via an internal optical fiber, utilizing the laser energy to generate cavitation bubbles in the liquid inside the balloon. As the laser energy increases, these bubbles undergo a phenomenon known as "laser-induced photo-induced breakdown of cavitation bubbles," or simply the laser cavitation effect. In this effect, the expansion and subsequent rupture of the bubbles generate shock waves. These shock waves are transmitted through the balloon to calcified plaques on the blood vessel wall, thereby fracturing superficial and deep calcifications and improving vascular compliance.

[0048] Compared to traditional technologies, the shockwave balloon provided in this invention offers significant advantages. It eliminates the need for physical balloon expansion or high-voltage discharge to generate shockwaves, meaning the balloon itself is not damaged by repeated impacts. Furthermore, because the shockwaves generated by the laser cavitation effect are precisely controlled, even multiple uses within a single procedure will not cause unnecessary damage to the vessel wall or other tissues. This design allows surgeons to freely adjust the number of shockwave releases according to the specific surgical situation, without the limitations of traditional balloon catheter pulse releases (typically no more than 100 times), providing greater surgical options and safety. Therefore, this innovative shockwave balloon technology offers a more effective and safer treatment method for managing vascular calcification lesions.

[0049] First Embodiment

[0050] like Figure 1 As shown, the first embodiment of the present invention provides a shockwave balloon, which includes at least a balloon catheter 1, a balloon 2, and multiple optical fibers 3. The balloon catheter 1 is a multi-lumen tube that can be inserted into a diseased blood vessel via interventional surgery. The balloon 2 is mounted on the balloon catheter 1 and its size matches that of the diseased blood vessel to impact the calcified portion of the diseased blood vessel. The multiple optical fibers 3 are inserted within the fiber optic cavities of the balloon catheter 1 to continuously transmit laser light of a preset wavelength into the balloon 2, thereby generating a laser cavitation effect within the balloon 2.

[0051] like Figure 2As shown, in this embodiment, the balloon catheter 1 is a multi-lumen tube, including at least a guidewire lumen 11, an inlet lumen 12, an outlet lumen 13, and multiple fiber optic cavities 14. The guidewire lumen 11 is located at the center of the balloon catheter 1, and its central axis coincides with the central axis of the balloon catheter 1. The guidewire lumen 11 is used to insert a guidewire, thereby guiding the insertion of the balloon catheter 1. The inlet lumen 12, outlet lumen 13, and multiple fiber optic cavities 14 are distributed around the central axis of the guidewire lumen 11. The inlet lumen 12 and outlet lumen 13 are used to communicate with the balloon 2 for fluid circulation; the fiber optic cavities 14 are used to insert optical fibers 3 for transmitting laser light into the balloon 2. Furthermore, as... Figure 1 As shown, in this embodiment, an annular groove 15 is provided on the outer wall of the balloon catheter 1. The annular groove 15 is located outside the guidewire cavity 11 (inside the balloon 2) and communicates with multiple fiber optic cavities 14.

[0052] like Figure 1 As shown, in this embodiment, the balloon 2 is sleeved on the outside of the balloon catheter 1 and communicates with the inlet chamber 12 and the outlet chamber 13 for fluid circulation. Specifically, in this embodiment, the balloon 2 includes an inner balloon 21 and an outer balloon 22. The inner balloon 21 is sleeved on the outside of the balloon catheter 1 and seals the annular groove 15; the outer balloon 22 is sleeved on the outside of the inner balloon 21 and seals the inner balloon 21. Correspondingly, as... Figure 2 As shown, the inlet chamber 12 includes a first inlet chamber 121 and a second inlet chamber 122, and the outlet chamber 13 includes a first outlet chamber 131 and a second outlet chamber 132. The first inlet chamber 121 and the first outlet chamber 131 are respectively connected to the inner balloon 21. The first inlet chamber 121 continuously injects a cryogenically cooled liquid, while the first outlet chamber 131 continuously draws out the liquid within the inner balloon 21 that has been heated due to contact with the laser, thereby achieving liquid circulation within the inner balloon 21 and cooling the liquid inside the inner balloon to approximately the same temperature as body temperature. The second inlet chamber 122 and the second outlet chamber 132 are respectively connected to the outer balloon 22. The second inlet chamber 122 continuously injects a cryogenically cooled liquid, while the second outlet chamber 132 continuously draws out the liquid that may have been heated due to insufficient heat dissipation from the inner balloon 21, thereby utilizing the outer balloon 22 to further enhance the cooling effect of the liquid within the inner balloon 21.

[0053] like Figure 1 and Figure 2As shown, multiple optical fibers 3 are respectively inserted into multiple optical fiber cavities 14, and the laser emitting end 30 of each optical fiber 3 is located in an annular slot 15 to continuously transmit laser light of a preset wavelength into the inner balloon 21, thereby generating a laser cavitation effect within the inner balloon 21. In this embodiment, the preset wavelength range of the laser is 193nm to 20μm, preferably 1940nm. Its output wavelength is located at the water absorption peak, within the safe wavelength range for the human eye, resulting in shallow penetration into tissues, thus minimizing wound size and improving hemostasis.

[0054] The following is combined Figures 3-6 The formation process of shock waves will be explained using a single optical fiber 3 as an example.

[0055] like Figure 3 As shown, when only one fiber 3 is working, a cavitation bubble 10 will be generated at the laser emission end of fiber 3 as the laser continues to propagate. Here, a high-power laser is used, with a power density typically around 10^6 ohms. 8 W / cm 2 The above is to rapidly deposit energy in the liquid medium, generating sufficient energy density to vaporize or ionize the liquid. When the laser power density exceeds the liquid's breakdown threshold, a high-temperature, high-pressure plasma is formed in the focusing region, causing the surrounding liquid to compress and generate shock waves, triggering a cavitation effect.

[0056] like Figure 4 As shown, as the laser energy increases, the cavitation bubble 10 will expand continuously, thereby compressing the liquid and generating shock waves that spread in all directions.

[0057] like Figure 5 and Figure 6 As shown, when the cavitation bubble 10 expands to its limit and then annihilates, the surrounding liquid will converge towards the center of the cavitation bubble and diffuse again, thereby generating multiple shock waves.

[0058] Therefore, the formation and annihilation of a cavitation bubble 10 generates multiple shock waves, which drive the external balloon 22 to continuously impact the calcified plaques in the diseased blood vessel, thereby fracturing both superficial and deep calcified plaques, improving vascular compliance, and allowing the fracturing calcified plaques to be removed from the body using other thrombectomy instruments. Since the number of impacts is unlimited, changes in the calcified plaques can be observed using imaging equipment, and the laser power can be increased or decreased based on the impact effect.

[0059] Similarly, such as Figure 7 As shown, when there are multiple optical fibers 3 ( Figure 7When four optical fibers 3 (but not limited to a specific number of optical fibers 3) work simultaneously, a cavitation bubble 10 is generated at the laser emission end of each optical fiber 3, and multiple cavitation bubbles 10 are distributed around the central axis of the balloon catheter 1. Thus, by utilizing the expansion and annihilation of multiple cavitation bubbles 10, the oscillation amplitude of the shock wave can be increased, thereby improving the impact effect of the external balloon 22 on calcified plaques.

[0060] Furthermore, in the above embodiments, preferably, the outer surface of the external balloon 22 is provided with a plurality of rigid protrusions 221 of a predetermined shape for contacting the hardened plaque, thereby applying pressure to the hardened plaque. Specifically, the predetermined shape includes at least a dotted or linear shape, and the rigid protrusions 221 include at least a rigid polymer structure, metal particles, or metal wires. It is understood that by providing rigid protrusions 221 on the outer surface of the external balloon 22, pressure points or pressure zones can be pre-formed on the plaque. When the plaque absorbs the shock wave, it can fragment from the pressure points or pressure zones, thereby achieving a more uniform fragmentation effect.

[0061] In the above embodiments, preferably, each optical fiber 3 has a different installation orientation, so that each optical fiber 3 forms a different angle with the central axis of the balloon catheter 1. Furthermore, each optical fiber 3 can be rotatably inserted into the optical fiber cavity 14 to adjust the angle formed between the optical fiber 3 and the central axis of the balloon catheter 1. Therefore, the generation position of cavitation bubbles can be adjusted in real time according to the location of the plaque to ensure optimal plaque impaction effect.

[0062] In the above embodiments, preferably, the laser emission ends of the plurality of optical fibers 3 are located in different planes, and each optical fiber 3 can be telescopically inserted into the optical fiber cavity 14 to adjust the position of the laser emission end of each optical fiber 3. Thus, by using optical fibers 3 at different positions, the effective range of the pressure surface can be expanded, thereby improving the impact effect on the plaque.

[0063] Furthermore, it is understood that in another embodiment, the laser emitting ends of multiple optical fibers 3 can be arranged in the same plane, thereby concentrating the impact on patches in a specific area within that plane to improve the impact effect on patches in that specific area.

[0064] In the above embodiments, preferably, the laser emitting end of the optical fiber 3 is a plane, a concave-convex surface, or an inclined surface; the shape of the light spot emitted by the laser emitting end of the optical fiber 3 is a dot, a ring, or a preset shape, thereby meeting the usage requirements of different situations and improving the applicability of the shock wave balloon.

[0065] In the above embodiments, preferably, the balloon 2 has a radiopaque portion 50 made of radiopaque material (e.g., platinum or radiopaque ink) to indicate the location of the balloon 2 and / or the optical fiber 3, thereby helping the doctor to determine the position of the balloon catheter 1 during the operation and ensuring the accuracy of the placement of the balloon catheter 1.

[0066] The working process of the shockwave balloon provided in the first embodiment of the present invention will be described in detail below:

[0067] First, the doctor inserts balloon catheter 1 along with balloon 2 (in a deflated state) into the patient's diseased blood vessel via interventional surgery. During this process, the doctor observes the location of the contrast-enhancing section 40 on a monitor to determine the placement position of balloon catheter 1 until balloon 2 corresponds to the calcified plaque within the blood vessel.

[0068] Then, liquid is injected into the inner balloon 21 through the first inlet chamber 121, and liquid is injected into the outer balloon 22 through the second inlet chamber 122, until the outer balloon 22 expands to contact the calcified plaque.

[0069] Finally, all optical fibers 3 are connected to the laser generator, and the controller controls the laser generator to emit laser light of a preset wavelength, so that the laser light is transmitted through the optical fibers 3 to the inner balloon 21, so as to generate a laser cavitation effect within the inner balloon 21. The shock wave generated by this laser cavitation effect is transmitted along the liquid, through the balloon wall of the outer balloon 22 and the blood vessel wall, to the hard calcified plaque, where it is absorbed by the calcified plaque, thereby causing the plaque to fragment.

[0070] After one or more laser shockwave releases, the temperature of the liquid inside the inner balloon 21 may change. Therefore, the inner balloon 21 is cooled by circulating cooling liquid through the first liquid inlet chamber 121 and the first liquid outlet chamber 131; and the liquid that may be heated due to insufficient heat dissipation from the inner balloon 21 is continuously drawn out through the second liquid inlet chamber 122 and the second liquid outlet chamber 132, thereby using the outer balloon 22 to further improve the cooling effect of the liquid inside the inner balloon 21.

[0071] In addition, when impacting calcified plaques, depending on the condition of the blood vessel plaque, only one cavitation bubble can be generated, or any number of cavitation bubbles within the maximum value can be generated to achieve the desired plaque fragmentation effect.

[0072] Second Embodiment

[0073] like Figure 8 As shown, based on the first embodiment described above, the second embodiment of the present invention provides another shock wave balloon, including a balloon catheter 1, a balloon 2, and multiple optical fibers 3. The difference between this embodiment and the first embodiment is that the number of balloons 2 is multiple.

[0074] Specifically, in this embodiment, a plurality of balloons 2 are spaced apart along the length of the balloon catheter 1, and an annular groove 15 is formed at a position corresponding to each balloon 2 on the balloon catheter 1. Correspondingly, a plurality of optical fibers 3 are respectively inserted into a plurality of optical fiber cavities 14, and each annular groove 15 corresponds to the laser emission end of at least one optical fiber 3.

[0075] It is understood that in this embodiment, by setting multiple balloons 2 on the balloon catheter 1, multiple regions of calcified plaques can be simultaneously fragmented and impacted to improve the impact efficiency on calcified plaques, thereby shortening the treatment time and reducing patient suffering.

[0076] Furthermore, in this embodiment, each annular slot 15 corresponds to the laser emission end of at least one optical fiber 3, and each optical fiber 3 can be telescopically inserted into the optical fiber cavity 14, thereby adjusting the number of optical fibers 3 in each annular slot 15 as needed to make personalized adjustments according to the calcification situation in different areas and improve the impact effect on calcified patches.

[0077] In this embodiment, apart from the differences mentioned above, the rest of the structure is the same as that in the first embodiment, and will not be described again here.

[0078] Third Embodiment

[0079] like Figure 9 As shown, the third embodiment of the present invention also provides a laser medical system. This laser medical system includes a laser generator 100, a controller 200, and the shockwave balloon described in the first or second embodiment.

[0080] Specifically, the laser generator 100 is used to generate laser light of a preset wavelength. Each optical fiber 3 in the shockwave balloon is connected to the laser generator 100 for laser conduction. The controller 200 is connected to the laser generator 100 and is used to control the laser generator 100 to emit laser light of a preset wavelength, thereby conducting the laser light through each optical fiber 3 into the balloon 2 to generate a laser cavitation effect within the balloon 2. The controller 200 is equipped with a touch screen 210 for button control; it also has a control handle or foot pedal 220 and other control structures for controlling the rotation angle and extension length of the optical fibers 3.

[0081] Understandably, this laser medical system can also be equipped with other auxiliary facilities as needed, such as auxiliary angiography facilities and interventional puncture facilities, to meet diverse usage requirements.

[0082] In summary, the shockwave balloon and laser medical system provided in the embodiments of the present invention have the following beneficial effects:

[0083] (1) The shockwave balloon has good permeability, allowing it to smoothly enter the diseased blood vessel site, thus improving the convenience of interventional surgery. Furthermore, this shockwave balloon achieves impact on calcified plaques through a laser cavitation effect within the balloon. Even if multiple shockwaves are generated during the same procedure, the balloon itself will not be damaged, nor will it damage the blood vessels or other tissues. Therefore, the number of shockwave releases can be freely adjusted according to the different needs of each procedure, without considering the upper limit (generally no more than 100 pulses) of traditional shockwave balloon catheter release pulses.

[0084] (2) Compared with the traditional method of directly using balloon pressure expansion to crack calcified plaques, the shock wave generated by the laser cavitation effect in this embodiment of the invention has a relatively gentle and stable impact on calcified plaques (the high-pressure electrohydraulic cavitation effect is affected by the electrolytic effect of the number of electrode discharges and will gradually decrease in effectiveness), and will not cause damage to blood vessels due to excessive pressure expansion.

[0085] (3) It is easy to operate, without complicated operating procedures or special training, making it more friendly to novice doctors and conducive to its widespread application.

[0086] (4) It has a simple structure, low price, and is suitable for mass production.

[0087] It should be noted that the above embodiments are merely illustrative examples. The technical solutions of each embodiment can be combined, and all are within the protection scope of this invention.

[0088] It should be understood that the terms "depth," "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0089] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0090] The shockwave balloon and laser medical system provided by this invention have been described in detail above. Any obvious modifications made by those skilled in the art without departing from the essence of this invention will constitute an infringement of the patent rights of this invention and will incur corresponding legal liability.

Claims

1. A shockwave balloon, characterized in that... include: A balloon catheter includes at least a guidewire lumen, an inlet lumen, an outlet lumen, and multiple fiber optic cavities; wherein the inlet lumen, the outlet lumen, and the multiple fiber optic cavities are distributed around the central axis of the guidewire lumen, and an annular groove is formed on the outer wall of the balloon catheter, and the annular groove is connected to the multiple fiber optic cavities. A balloon is fitted over the outside of the balloon catheter and seals the annular groove; wherein the inlet chamber and the outlet chamber are respectively connected to the balloon for fluid circulation; Multiple optical fibers are respectively inserted into the multiple optical fiber cavities, and the laser emission end of each optical fiber is located in the annular slot, so as to continuously transmit laser of a preset wavelength into the balloon, thereby generating a laser cavitation effect in the balloon.

2. The shockwave balloon as described in claim 1, characterized in that... The balloon includes: An inner balloon is fitted over the outside of the balloon catheter and seals the annular groove. An outer balloon is fitted over the outer side of the inner balloon and seals and encloses the inner balloon. The inlet chamber includes a first inlet chamber and a second inlet chamber, and the outlet chamber includes a first outlet chamber and a second outlet chamber; the first inlet chamber and the first outlet chamber are respectively connected to the inner balloon, and the second inlet chamber and the second outlet chamber are respectively connected to the outer balloon.

3. The shockwave balloon as described in claim 2, characterized in that: The outer surface of the external balloon is provided with a plurality of rigid protrusions of a predetermined shape for contacting the hardened plaque, thereby applying pressure to the hardened plaque; The preset shape includes at least a dot or a line shape, and the rigid protrusion includes at least a rigid polymer structure, metal particles, or metal wire.

4. The shockwave balloon as described in claim 1, characterized in that: Each of the optical fibers has a different installation orientation, so that each optical fiber forms a different angle with the central axis of the balloon catheter; Furthermore, each of the optical fibers can be rotatably inserted into the optical fiber cavity to adjust the angle formed between the optical fiber and the central axis of the balloon catheter.

5. The shockwave balloon as described in claim 1, characterized in that: The laser emission ends of the multiple optical fibers are located in different planes, and each optical fiber can be telescopically inserted into the optical fiber cavity to adjust the position of the laser emission end of each optical fiber.

6. The shockwave balloon as described in claim 1, characterized in that: The laser emission end of the optical fiber is a flat surface, a concave-convex surface, or a beveled surface; The laser emission end of the optical fiber emits a spot shape that is dot-shaped, ring-shaped, or a preset shape.

7. The shockwave balloon as described in claim 1, characterized in that: Each balloon has a developing section made of developing material to indicate the location of the balloon.

8. The shockwave balloon as described in claim 1, characterized in that: The preset wavelength range of the laser is 193nm to 20μm, preferably 1940nm.

9. The shockwave balloon as described in claim 1, characterized in that: The balloon catheter has multiple balloons spaced apart along its length, and an annular groove is formed on the balloon catheter at a position corresponding to each balloon. The multiple optical fibers are retractably inserted into the multiple optical fiber cavities, and each annular slot corresponds to the laser emission end of at least one of the optical fibers.

10. A laser medical system, characterized in that... include: A laser generator is used to generate laser light of a preset wavelength. The shockwave balloon according to any one of claims 1 to 9, wherein each optical fiber in the shockwave balloon is connected to the laser generator; A controller, connected to the laser generator, is used to control the laser generator to emit laser light of a preset wavelength, thereby transmitting the laser light into the balloon through each of the optical fibers to generate a laser cavitation effect within the balloon.

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