A photocured balloon device

Abstract

This invention provides a photocurable balloon device, including a catheter, a removable guidewire inserted within the catheter, and a light irradiation component. An operating part is fixedly connected to the proximal end of the catheter, and the operating part has an injection port and an instrument inlet, both of which communicate with the catheter. A balloon covers the outside of the catheter, and the balloon is located away from the operating part. The catheter communicates with the balloon. The balloon has a light-transmitting structure, and the light irradiation component is connected to the catheter through the instrument inlet and extends to the inside of the balloon. This invention uses an inflated balloon to compress and coat hydrogel onto the damaged area, ensuring uniform coating. Light emitted from the light irradiation component passes through the balloon to rapidly cure the hydrogel, allowing it to adhere firmly to the tissue and thus improving the repair effect.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a photocurable balloon device. Background Technology

[0002] Hydrogels, due to their high water content, biocompatibility, anti-inflammatory properties, and wound-healing effects, have become a research hotspot in the field of medical dressings in recent years and have been successfully applied to the repair of external wounds on the human body. However, in internal surgeries, especially in departments such as the gastrointestinal tract, bladder, and lungs, surgical injuries and even perforations frequently occur, and existing remedial measures are complex, slow to respond, and prone to serious medical accidents. While the application of hydrogels for in vivo wound repair has great potential, it faces the following challenges: 1. Conventional endoscopic spot application methods are prone to causing uneven coating of hydrogel in the body cavity environment; Second, existing curing methods are insufficient to achieve rapid and complete curing of hydrogels in minimally invasive settings, and the cured hydrogel does not adhere firmly to the tissue, affecting the repair effect. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a photocurable balloon device, comprising a catheter and a guidewire and a light irradiation assembly that are insertable and removable within the catheter. An operating part is fixedly connected to the proximal end of the catheter, and the operating part has an injection port and an instrument inlet, both of which communicate with the catheter. A balloon is wrapped around the outside of the catheter, and the balloon is located away from the operating part. The catheter communicates with the balloon. The balloon has a light-transmitting structure, and the light irradiation assembly is connected to the catheter through the instrument inlet and extends to the inside of the balloon.

[0004] Optionally, the light irradiation assembly includes a light-emitting module, an insertion rod, a handle, and a power supply. The light-emitting module is disposed at the distal end of the insertion rod, the handle is fixed at the proximal end of the insertion rod, and the power supply is installed inside the handle and connected to the light-emitting module via a wire located inside the insertion rod. After the handle is assembled into the instrument inlet, the insertion rod is located inside the catheter, and the light-emitting module is located inside the balloon.

[0005] Optionally, the light-emitting module is encapsulated at the distal end of the insertion rod by a light-transmitting adhesive, and the wire is sealed inside the insertion rod.

[0006] Optionally, the light-emitting module is an ultraviolet light-emitting module or a visible light-emitting module.

[0007] Optionally, the light-emitting module is a UV-LED light source or an LED light source with a wavelength of 400~700nm.

[0008] Optionally, the insertion rod is made of insulating material.

[0009] Optionally, the light irradiation assembly includes an optical fiber, a first optical fiber connector, and a handle. The optical fiber is connected to the handle via the first optical fiber connector, which is used to directly or indirectly connect to a light source. After the handle is assembled into the instrument inlet, the optical fiber is located inside the catheter and extends to the inside of the balloon.

[0010] Optionally, the light source is located inside the handle, and the first optical fiber connector is directly connected to the light source.

[0011] Optionally, the light source is located outside the handle, and the handle is provided with a second optical fiber connector, which is connected to the first optical fiber connector. The light source is connected to the first optical fiber connector through the second optical fiber connector.

[0012] Optionally, the handle is detachably and fixedly connected to the instrument inlet.

[0013] Optionally, the operating unit is further provided with a catheter interface, which is connected to the proximal end of the catheter. The injection port and the instrument inlet are both connected to the catheter through the catheter interface. The injection port, the instrument inlet, and the catheter interface form a Y-shaped structure, and the catheter interface and the instrument inlet are coaxial with the catheter. After the light irradiation component is connected and assembled into the instrument inlet, the handle seals the instrument inlet.

[0014] Optionally, the instrument inlet is a first Luer interface, and the handle is provided with a second Luer interface adapted to the first Luer interface, wherein one of the first Luer interface and the second Luer interface is a male interface and the other is a female interface.

[0015] Optionally, the injection port is further provided with a two-way stopcock, the stopcock having a stopcock through hole. When the stopcock through hole is coaxial with the injection port, the two-way stopcock is open; when the stopcock through hole is perpendicular to the injection port, the two-way stopcock is closed.

[0016] Optionally, the operating part is a three-way Luer connector.

[0017] Optionally, the proximal end of the guidewire is provided with a plug-in structure, which is detachably and fixedly connected to the instrument inlet.

[0018] Optionally, the catheter is separated into a first tube and a second tube inside the balloon. The proximal end of the first tube is fixedly connected to the operating part. The two ends of the balloon are fixedly connected to the outer walls of the first tube and the second tube, respectively. The cross-section between the distal end of the first tube and the proximal end of the second tube forms a communication channel between the catheter and the balloon.

[0019] Optionally, the first tube inside the balloon may also have several through holes on its wall.

[0020] Compared with the prior art, the technical solution of this utility model embodiment has the following beneficial effects: This invention uses an expanding balloon to compress and coat the hydrogel onto the damaged area, ensuring uniform coating. Light emitted from the light irradiation component passes through the balloon to rapidly solidify the hydrogel, allowing it to adhere firmly to the tissue and thus improving the repair effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of a photocurable balloon device provided in an embodiment of the present invention (without light irradiation component connected). Figure 2 This is a schematic diagram of the structure of an ultraviolet curing device provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a photocuring balloon device (connected to a light irradiation component) provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the guidewire provided in one embodiment of the present invention; Figure 5 A schematic diagram of the structure of a photocurable balloon device provided in an embodiment of this utility model (with guide wire connected). Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The terms "above" and "over," and any variations thereof, are intended to describe positional relationships and do not imply direct contact between the described objects.

[0025] As described in the background section, surgical injuries and even perforations frequently occur during surgeries in the human body, particularly in departments such as the gastrointestinal tract, bladder, and lungs. Existing remedial procedures are complex, slow to respond, and prone to serious medical accidents. While applying hydrogels to in vivo injury repair holds great potential, it faces the following challenges: 1. Conventional endoscopic spot application methods are prone to causing uneven coating of hydrogel in the body cavity environment; Second, existing curing methods are insufficient to achieve rapid and complete curing of hydrogels in minimally invasive settings, and the cured hydrogel does not adhere firmly to the tissue, affecting the repair effect.

[0026] To solve the above technical problems, please refer to Figures 1 to 5 An embodiment of this utility model provides a photocurable balloon device, including a catheter 3 and a guide wire 8 and a light irradiation component 7 that are insertable and removable within the catheter 3. An operating part 5 is fixedly connected to the proximal end of the catheter 3. The operating part 5 is provided with an injection port 501 and an instrument inlet 502, both of which are connected to the catheter 3. A balloon 4 is covered on the outside of the catheter 3, and the balloon 4 is away from the operating part 5. The catheter 3 is connected to the balloon 4. The balloon 4 has a light-transmitting structure, and the light irradiation component 7 is connected to the catheter 3 through the instrument inlet 502 and extends to the inside of the balloon 4.

[0027] In this embodiment, the injection port 501 is used to connect to an injection device, such as a 20-atmosphere water pump. This embodiment does not limit the amount of liquid injected into the balloon 4; the specific amount can be set according to actual usage requirements.

[0028] In one specific implementation, the liquid injected into the balloon 4 can be physiological saline. Therefore, when injecting physiological saline into the balloon 4, the injection port 501 needs to be connected to the injection device. The specific process of the injection device injecting physiological saline into the balloon 4 through the catheter 3 is as follows: physiological saline enters from the proximal end of the catheter 3. Because the distal end of the catheter 3 is a closed structure, the physiological saline flows out from the connecting structure set on the catheter 3 and accumulates in the balloon 4, causing the balloon 4 to expand outward. When the physiological saline is withdrawn from the inside of the catheter 3, the balloon 4 contracts back to its original state.

[0029] The catheter 3 is a hollow tubular structure, with a closed structure at the distal end and an open structure at the proximal end. The catheter 3 is connected to the balloon 4 through a connecting structure on the catheter 3.

[0030] Both the guidewire 8 and the light irradiation component 7 can be inserted and removed into the catheter 3. In one specific embodiment, the guidewire 8 can be inserted and removed from the injection port 501 into the catheter 3, meaning the guidewire lumen and the injection port share the same channel. Therefore, the diameter of the catheter 3 can be significantly reduced, allowing the catheter 3 to be inserted into a tube or cavity within the human body through the instrument channel of the endoscope, enabling visual operation. In another specific embodiment, the guidewire 8 can also be inserted and removed from the instrument inlet 502 into the catheter 3, meaning the guidewire lumen and the instrument channel share the same channel. Therefore, the diameter of the catheter 3 can be significantly reduced, allowing the catheter 3 to be inserted into a tube or cavity within the human body through the instrument channel of the endoscope, enabling visual operation.

[0031] The instrument inlet 502 can be connected to the required instruments according to actual use; this embodiment does not limit the type of instruments. Since the guidewire 8 is also an instrument, it is preferable that the guidewire 8 can be inserted and removed through the instrument inlet 502 into the catheter 3. The working principle of the light-curing balloon 4 device is as follows: Hydrogel application: Applying hydrogel to the damaged area inside the body through an endoscope; Balloon 4 in place: Insert guidewire 8 into catheter 3 through instrument inlet 502. Guidewire 8 guides balloon 4 through endoscope to the damaged site coated with hydrogel. Insert the light irradiation component 7: Pull out the guidewire 8, insert the light irradiation component 7 into the catheter 3 from the instrument inlet 502, and extend it to the inside of the balloon 4; Uniform hydrogel coating: Connect the injection port 501 to the injection device. The injection device injects physiological saline into the balloon 4 through the catheter 3. The balloon 4 expands and squeezes the hydrogel, so that the hydrogel is uniformly coated on the damaged area. Photocuring: When the light irradiation component 7 is working, the light emitted by the light irradiation component 7 passes through the light-transmitting spherical capsule 4 to irradiate the hydrogel, which excites the photoinitiator in the hydrogel to produce active substances, and triggers the cross-linking of hydrogel monomers to form a three-dimensional network structure, thereby achieving rapid curing (curing time is usually a few seconds to a few minutes). Device removal: After curing is complete, drain the saline solution from balloon 4 through catheter 3, causing balloon 4 to contract, and then pull out catheter 3.

[0032] In this embodiment, the hydrogel is applied to the damaged area by the expansion of the balloon 4, so that the hydrogel is evenly coated on the damaged area. The light emitted by the light irradiation component 7 passes through the balloon 4 to quickly solidify the hydrogel, so that the solidified hydrogel adheres firmly to the tissue, thereby improving the repair effect.

[0033] Photocuring of hydrogels is a process that uses ultraviolet (UV) or visible (VIS) light to irradiate hydrogel materials, causing them to rapidly solidify. The principle of photocuring is primarily based on the action of photoinitiators; therefore, hydrogels contain photoinitiators. Photoinitiators are compounds that absorb light of specific wavelengths and transform into chemically active substances. When an appropriate amount of photoinitiator is added to a hydrogel material, and the material is irradiated with UV or visible light, the photoinitiator absorbs light energy and transforms into active substances that can cause chemical reactions in the hydrogel. These active substances initiate a chain reaction, thereby cross-linking the monomer molecules in the hydrogel to form a three-dimensional network structure, thus solidifying the hydrogel into a solid. The solidified hydrogel possesses excellent mechanical properties, heat resistance, and chemical stability.

[0034] This embodiment does not limit the specific structure of the light irradiation component 7, as long as it can achieve rapid curing of the hydrogel.

[0035] For one specific implementation method, please refer to Figure 2 and Figure 3 The light irradiation assembly 7 includes a light-emitting module 701, an insertion rod 702, a handle 703, and a power supply. The light-emitting module 701 is disposed at the distal end of the insertion rod 702, and the handle 703 is fixed at the proximal end of the insertion rod 702. The power supply is installed inside the handle 703 and connected to the light-emitting module 701 via a wire located inside the insertion rod 702. After the handle 703 is assembled into the instrument inlet 502, the insertion rod 702 is located inside the catheter 3, and the light-emitting module 701 is located inside the balloon 4.

[0036] Since saline solution is injected into the balloon 4 through the catheter 3, and saline solution is usually a conductor, it can easily cause safety hazards such as leakage current and breakdown of the light irradiation component 7. Therefore, in this embodiment, the light-emitting module 701 is encapsulated in a transparent and light-transmitting colloid at the distal end of the insertion rod 702, and the end of the wire connected to the light-emitting module 701 is sealed in the insertion rod 702. The insertion rod 702 is made of insulating material, so that the light-emitting module 701 and the wire are isolated from the saline solution, thereby ensuring the electrical safety performance of the device.

[0037] This embodiment does not limit the specific type of the light-emitting module 701. The light-emitting module 701 can be an ultraviolet light-emitting module that can emit ultraviolet light, such as a UV-LED light source. The light-emitting module 701 can also be a visible light-emitting module 701 that can emit visible light. The light source wavelength and power of the light-emitting module 701 are selected to be a light source that is easy for hydrogel curing, such as an LED light source with a wavelength of 400~700nm, preferably an LED light source with a wavelength of 405nm.

[0038] The insertion rod 702 serves to support the wires, which facilitates the insertion of the light-emitting module 701 from the instrument inlet 502 into the conduit 3.

[0039] If the conduit 3 is a flexible tube or a combination of flexible and rigid tube, then the insertion rod 702 is also flexible, such as being made of nickel-titanium alloy.

[0040] In a second specific embodiment, the light irradiation assembly 7 includes an optical fiber, a first optical fiber connector, and a handle. The optical fiber is connected to the handle through the first optical fiber connector, which is used to directly or indirectly connect to a light source. After the handle is assembled into the instrument inlet 502, the optical fiber is located inside the catheter 3 and extends into the balloon 4.

[0041] In this embodiment, the optical fiber is mainly made of glass (silicon dioxide) or plastic (PPMA, PS, etc.), which are insulating materials and non-conductive, thus ensuring the electrical safety performance of the device.

[0042] In this embodiment, the first optical fiber connector is used to directly or indirectly connect to the light source. In one implementation, the light source is located inside the handle, and the first optical fiber connector is directly connected to the light source. In a second implementation, the light source is located outside the handle, i.e., not on the handle. In this case, the handle also has a second optical fiber connector, which is connected to the first optical fiber connector, and the light source is connected to the first optical fiber connector through the second optical fiber connector.

[0043] Furthermore, the handle 703 is detachably and fixedly connected to the instrument inlet 502, such as by snap-fit ​​or threaded connection.

[0044] Since the light irradiation component 7 is inserted into the catheter 3 before the saline solution is injected into the balloon 4, the handle 703 is sealed in the instrument inlet 502 after the light irradiation component 7 is connected to the instrument inlet 502 to prevent the saline solution from flowing out of the instrument inlet 502.

[0045] In this embodiment, the proximal end of the guidewire 8 is provided with a plug-in structure 9, which is detachably and fixedly connected to the instrument inlet 502, such as by snap-fit ​​or threaded connection.

[0046] In one implementation, the plug-in structure 9 is a screw cap, which is threadedly connected to the instrument inlet 502 via matching internal and external threads.

[0047] In this embodiment, the catheter 3 can be an integral structure or a separate structure.

[0048] In one specific implementation, the catheter 3 is separated into a first tube 303 and a second tube 301 on the inner side of the balloon 4. The proximal end of the first tube 303 is fixedly connected to the operating part 5. The two ends of the balloon 4 are fixedly connected to the outer walls of the first tube 303 and the second tube 301, respectively. The cross-section 302 between the distal end of the first tube 303 and the proximal end of the second tube 301 forms a communication channel between the catheter 3 and the balloon 4.

[0049] In this embodiment, since the catheter 3 is divided into two segments inside the balloon 4 (i.e., the area corresponding to the inside of the balloon 4), during the procedure, when fluid is injected, the balloon 4 expands outward and extends longitudinally. The second tube 301 can also move forward longitudinally accordingly. This prevents the balloon 4 from bending due to the stretching deformation of the catheter 3. After the balloon 4 is inserted into a narrow tube or cavity such as the ureter in the human body, it can expand evenly, so that the side walls of the narrow tube or cavity are subjected to uniform force. The separate design of the two-segment catheter 3 avoids the catheter 3 being a one-piece structure. When the balloon 4 expands and extends longitudinally, the catheter 3 undergoes longitudinal stretching deformation. Since the materials of the catheter 3 and the balloon 4 are different, the deformation of the catheter 3 will cause the balloon 4 to bend and deform after expansion, resulting in uneven expansion force on the surface of the balloon 4 during expansion. This leads to uneven force on the side walls of the narrow tube or cavity that needs to be expanded in the human body, resulting in poor treatment effect and causing more discomfort to the patient.

[0050] Furthermore, one or more through holes are provided on the wall of the first tube 303 inside the balloon 4, which serve as a connecting structure to connect the conduit 3 and the balloon 4.

[0051] In this embodiment, in order to determine the accurate position of the balloon 4 within the tube or cavity of the human body, the position of the balloon 4 within the tube or cavity of the human body can also be determined by X-ray imaging recording technology using a contrast ring. The device also includes a contrast ring 2, which is disposed at the connection between the distal end of the balloon 4 and the catheter 3 and / or the connection between the proximal end of the balloon 4 and the catheter 3.

[0052] In this embodiment, the material of the catheter 3 between the imaging ring 2 and the operating part 5 can typically be PEEK, but nylon, polyeneamine, or other materials can also be used, with PEEK being the preferred material. PEEK material has the advantages of a small diameter and good rigidity, allowing the size of the catheter 3 behind the imaging ring to reach 0.6–1.5 mm, preferably 0.7–1.0 mm, and most preferably 0.8 mm. The Shore hardness of the catheter 3 can reach 50D–95D, preferably 80D–90D. Using PEEK material can further reduce the diameter of the catheter 3 while ensuring its guiding function, thereby improving the diagnostic and treatment effect and reducing patient discomfort.

[0053] Preferably, a tip catheter 1 can be provided at the distal end of catheter 3, communicating with catheter 3, with the distal end of tip catheter 1 closed. After guidewire 8 is inserted into catheter 3, guidewire 8 extends into tip catheter 1, with the distal end of tip catheter 1 extending approximately 0.5mm-2mm beyond the distal end of guidewire 8. In this embodiment, tip catheter 1 is made of a soft polymer material, preferably TPU. Using a soft material for tip catheter 1 avoids damage to the ureteral wall caused by the insertion of a hard material, increasing the probability of surgical success. Simultaneously, since tip catheter 1 also includes part of guidewire 8, it possesses a certain degree of rigidity, enabling it to guide catheter 3 into the body. The length of the distal end of tip catheter 1 extending beyond the distal end of guidewire 8 is within the range of 0.5mm-2mm. If the length is less than 0.5mm, guidewire 8 may easily puncture the tip of catheter 3 during insertion; if the length is greater than 2mm, the distal end of catheter 3 will be too soft to insert. Therefore, a length of 0.5mm-2mm is a suitable range.

[0054] Furthermore, the distal end of the aforementioned tip catheter 1 can be configured as a spherical structure. The smooth spherical surface design of the spherical structure can guide the catheter 3 to be inserted into the human body, reducing damage to the wall of the tube or cavity inside the human body.

[0055] In this embodiment, a scale line is provided on the outer peripheral surface of the catheter 3 between the proximal end of the balloon 4 and the operating part 5. The scale line can be an equidistant scale line, so that the insertion depth of the balloon 4 can be observed by imaging with an endoscope.

[0056] Preferably, the outer wall of the catheter 3 near the operating part 5 is provided with scale markings, such as 60cm, 80cm and 100cm, to mark the distance the catheter 3 enters the internal cavity of the human body. The operator can intuitively observe the length of the catheter 3 inserted through the scale markings.

[0057] Preferably, the guide wire 8 in this embodiment is a metal guide wire, which can be made of metal materials such as nickel-titanium alloy or stainless steel, and more preferably nickel-titanium alloy. Nickel-titanium alloy is a shape memory alloy, a special alloy that can automatically recover its original shape after plastic deformation at a specific temperature. Its elongation rate is over 20%, its fatigue life reaches 1*10^7, its damping characteristics are 10 times higher than ordinary springs, and its corrosion resistance is superior to the best medical stainless steel currently available. Therefore, it can meet the application needs of various engineering and medical fields, making it an excellent functional material. In addition to its unique shape memory function, shape memory alloys also have excellent characteristics such as wear resistance, corrosion resistance, high damping, and superelasticity. Using nickel-titanium alloy as a metal guide wire can greatly extend the service life of instruments and reduce instrument wear rate.

[0058] In this embodiment, the operating part 5 is also provided with a catheter interface 503, which is connected to the proximal end of the catheter 1. The injection port 501 and the instrument inlet 502 are both connected to the catheter 1 through the catheter interface 503. The injection port 501, the instrument inlet 502 and the catheter interface 503 form a Y-shaped structure, and the catheter interface 503 and the instrument inlet 502 are coaxial with the catheter 1. After the light irradiation component 7 is connected and assembled to the instrument inlet 502, the handle 703 seals the instrument inlet 502.

[0059] In this embodiment, the instrument inlet 502 is a first Luer interface, and the handle 703 is provided with a second Luer interface adapted to the first Luer interface. One of the first Luer interface and the second Luer interface is a male interface, and the other is a female interface.

[0060] To facilitate control of the opening and closing of the injection port 501, a two-way stopcock 6 can be installed on the injection port 501. The stopcock 6 has a stopcock through hole. When the stopcock through hole is coaxial with the injection port 501, the two-way stopcock 6 is opened when the stopcock through hole is rotated; when the stopcock through hole is perpendicular to the injection port 501, the two-way stopcock 6 is closed.

[0061] This embodiment does not limit the connection method between the two-way stopcock 6 and the injection port 501, such as threaded connection, snap-fit, etc. As a specific implementation, the two-way stopcock 6 is fixed to the injection port 501 by a nut. An injection device is connected to the two-way stopcock 6. When the two-way stopcock 6 is rotated to open the injection port 501, liquid can be injected into the catheter 3 through the injection device. When the two-way stopcock 6 is rotated to close the liquid channel, it can prevent external contaminants, dust, etc., from entering the human body's channels or cavities through the catheter 3, causing infection. Furthermore, it can maintain the expansion pressure to prevent liquid from flowing out of the inner side of the balloon 4, thus stabilizing the shape of the occluding balloon 4. Compared with existing injection structures, the design of the two-way stopcock 6 is significant. Existing injection structures require pushing and pulling an operating handle or other structures to control the opening or closing of the injection inlet. The connection between the operating handle and the catheter 3 is not fixed, and the operating handle is easily damaged by repeated pushing and pulling. In this embodiment, the two-way catheter 3 opens and closes the liquid channel through rotation, resulting in a simple structure, ease of operation, and extended instrument lifespan.

[0062] In this embodiment, the instrument inlet 502, the end of the two-way stopcock 6 (i.e. the end connected to the injection device), and the second Luer interface on the handle 703 are all standard Luer interfaces. Luer interfaces are highly versatile and can be configured with different instruments.

[0063] To simplify the structure of the operating unit 5, eliminating the need for the two-way stopcock 6 while ensuring the presence of the Luer interface, the operating unit 5 can adopt a three-way Luer connector. The three-way Luer connector includes a three-way body and a switch. The three-way body is provided with three standard Luer interfaces, namely the catheter interface, the injection port 501, and the instrument inlet 502. The switch is located on the three-way body, and the opening and closing of the three Luer interfaces can be achieved by operating the switch.

[0064] In summary, this invention uses an expanding balloon to compress and coat the hydrogel onto the damaged area, ensuring uniform coating. Light emitted from the light irradiation component then passes through the balloon to rapidly solidify the hydrogel, allowing it to adhere firmly to the tissue and thus improving the repair effect.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A photocured balloon device, characterized by, The device includes a catheter, a removable guidewire inserted within the catheter, and a light irradiation assembly. An operating section is fixedly connected to the proximal end of the catheter. The operating section has an injection port and an instrument inlet, both of which communicate with the catheter. A balloon is wrapped around the outside of the catheter, and the balloon is located away from the operating section. The catheter communicates with the balloon. The balloon has a light-transmitting structure, and the light irradiation assembly is connected to the catheter through the instrument inlet and extends to the inside of the balloon.

2. The photocured balloon device of claim 1, wherein, The light irradiation assembly includes a light-emitting module, an insertion rod, a handle, and a power supply. The light-emitting module is located at the distal end of the insertion rod, the handle is fixed at the proximal end of the insertion rod, and the power supply is installed inside the handle and connected to the light-emitting module via a wire located inside the insertion rod. After the handle is assembled into the instrument inlet, the insertion rod is located inside the catheter, and the light-emitting module is located inside the balloon.

3. The photo-cured balloon device of claim 2, wherein, The light-emitting module is encapsulated at the distal end of the insertion rod by a light-transmitting adhesive, and the wire is sealed inside the insertion rod.

4. The photo-cured balloon device of claim 2, wherein, The light-emitting module is either an ultraviolet light-emitting module or a visible light-emitting module.

5. The photo-cured balloon device of claim 4, wherein, The light-emitting module is a UV-LED light source or an LED light source with a wavelength of 400~700nm.

6. The photo-cured balloon device of claim 2, wherein, The insertion rod is made of insulating material.

7. The photo-cured balloon device of claim 1, wherein, The light irradiation assembly includes an optical fiber, a first optical fiber connector, and a handle. The optical fiber is connected to the handle via the first optical fiber connector, which is used to directly or indirectly connect to a light source. After the handle is assembled into the instrument inlet, the optical fiber is located inside the catheter and extends to the inside of the balloon.

8. The photo-cured balloon device of claim 7, wherein, The light source is located inside the handle, and the first optical fiber connector is directly connected to the light source.

9. The photocurable balloon device according to claim 7, characterized in that, The light source is located outside the handle. The handle is provided with a second optical fiber connector, which is connected to the first optical fiber connector. The light source is connected to the first optical fiber connector through the second optical fiber connector.

10. The photocurable balloon device according to claim 2 or 7, characterized in that, The handle is detachably and fixedly connected to the instrument inlet.

11. The photocurable balloon device according to claim 10, characterized in that, The operating unit is also provided with a catheter interface, which is connected to the proximal end of the catheter. The injection port and the instrument inlet are both connected to the catheter through the catheter interface. The injection port, the instrument inlet, and the catheter interface are in a Y-shaped structure, and the catheter interface and the instrument inlet are coaxial with the catheter. After the light irradiation component is connected and assembled into the instrument inlet, the handle seals the instrument inlet.

12. The photocurable balloon device according to claim 11, characterized in that, The instrument inlet is a first Luer interface, and the handle is provided with a second Luer interface adapted to the first Luer interface. One of the first Luer interface and the second Luer interface is a male interface, and the other is a female interface.

13. The photocurable balloon device according to claim 11, characterized in that, The injection port is also provided with a two-way stopcock. The stopcock has a through hole. When the through hole is coaxial with the injection port, the two-way stopcock is open. When the through hole is perpendicular to the injection port, the two-way stopcock is closed.

14. The photocurable balloon device according to claim 11, characterized in that, The operating part is a three-way Luer connector.

15. The photocurable balloon device according to claim 1, characterized in that, The guidewire is provided with a plug-in structure at its proximal end, and the plug-in structure is detachably and fixedly connected to the instrument inlet.

16. The photocurable balloon device according to claim 1, characterized in that, The catheter is separated into a first tube and a second tube inside the balloon. The proximal end of the first tube is fixedly connected to the operating part. The two ends of the balloon are fixedly connected to the outer walls of the first tube and the second tube, respectively. The cross-section between the distal end of the first tube and the proximal end of the second tube forms a communication channel between the catheter and the balloon.

17. The photocurable balloon device according to claim 16, characterized in that, The first tube inside the balloon is also provided with several through holes on its tube wall.

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