Balloon dilatation catheter for hepatobiliary surgical treatment

Abstract

The invention provides a balloon dilatation catheter for hepatobiliary surgical treatment, and belongs to the technical field of medical instruments, the balloon dilatation catheter comprises a connecting seat, an air pump is fixedly mounted at one end of the connecting seat, a sleeving head is fixedly connected to the outer end of the connecting seat, and the output end of the air pump is communicated with the sleeving head; the top of the side, close to the sleeving head, of the connecting base is fixedly connected with a guide pipe device. According to the catheter device, the air pressure control function and the disinfecting and winding function are integrated, so that when the catheter device is used, the air pump is started to supply air to the expansion balloon, the air pressure sensor monitors in real time, the pressure relief electromagnetic valve exhausts air when the air pressure is too high, the balloon is prevented from being excessively expanded, and the catheter body can be wound around the winding drum; the inner ultraviolet lamp and the outer ultraviolet lamp irradiate and sterilize from the inner surface and the outer surface of the catheter respectively, the driving motor drives the winding shaft through gear transmission, winding and unwinding of the catheter are achieved, the secondary infection risk is reduced, and operation and carrying are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically to a balloon dilatation catheter for hepatobiliary surgical treatment. Background Art

[0002] In the field of modern hepatobiliary surgery, balloon dilatation catheters, as an important type of medical device, play a key role in the treatment of biliary diseases. They are mainly composed of a slender tube and an expandable balloon at the distal end. The proximal end of the tube is equipped with a Luer connector for easy connection to syringes and other equipment. The proximal end of the balloon is provided with an injection port. The catheter is accurately inserted into the patient's bile duct lesion site through percutaneous or endoscopic interventional approaches, and the balloon is inflated by injecting saline or contrast agent into it to effectively widen the narrow bile duct, or break up the gallstones and use the catheter to expel the fragments. It can also lay the foundation for subsequent placement of stents, drainage tubes and other operations. The catheter is widely used in the treatment of various diseases such as bile duct stenosis, bile duct stones, cholangitis and biliary tumors. It has significant advantages such as minimally invasive, easy operation, simultaneous performance of multiple treatment operations under endoscopy, real-time display of the dilation process, high success rate and low recurrence rate, bringing effective treatment methods to many patients.

[0003] However, in the current clinical application process, the balloon dilatation catheter has exposed a series of problems that need to be solved urgently. On the one hand, the existing balloon dilatation catheter lacks effective disinfection function. Before actual use, the balloon dilatation catheter will inevitably be exposed to the external environment. Long-term exposure causes a large number of bacteria to be adsorbed on the surface of the catheter. When the catheter is inserted into the patient's body, these bacteria are very likely to cause adverse effects on the patient's body, greatly increasing the risk of secondary infection in the patient, and seriously threatening the patient's health and treatment effect. On the other hand, in the installation and disassembly of the catheter, the threaded connection method is currently mostly used. When the catheter needs to be disassembled, since the threaded joint is tightly connected to the catheter as a whole and the catheter is long, the entire catheter and the threaded joint need to be rotated during the disassembly process. This operation is extremely inconvenient, greatly reducing the work efficiency of medical staff and also causing potential discomfort to patients. It can be seen that the existing hepatobiliary surgical balloon dilatation catheter has obvious deficiencies in disinfection function and installation and disassembly convenience, which seriously restricts its further application and development in clinical treatment. Therefore, it is urgent to carry out targeted improvement design to improve product performance, better meet clinical treatment needs, and provide patients with safer and more efficient treatment plans. Summary of the invention

[0004] In view of the problem that the existing balloon dilatation catheters in the prior art lack a disinfection structure and are easily contaminated by bacteria and viruses, the purpose of the present invention is to provide a balloon dilatation catheter for hepatobiliary surgery.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A balloon dilatation catheter for hepatobiliary surgery treatment, comprising a connection seat, an air pump is fixedly mounted on one end of the connection seat, a sleeve joint is fixedly connected to the outer end of the connection seat, the output end of the air pump is connected to the sleeve joint, and a catheter device is fixedly connected to the top of the connection seat near the sleeve joint;

[0007] The catheter device includes a catheter body and a positioning mechanism, wherein the positioning mechanism is installed on a side of the top of the connecting seat close to the sleeve joint, the top of the positioning mechanism is fixedly connected to a base frame, the front end of the base frame close to the connecting seat is fixedly connected to an adjustment mechanism, the adjustment mechanism is installed on a side close to the connecting seat, and the upper end of the base frame away from the connecting seat is fixedly connected to a disinfection mechanism, the catheter body is rolled up on the inner side of the disinfection mechanism, the outer end of the catheter body is fixedly connected to an expansion balloon, an air supply microtube is provided inside the catheter body, a plug connector is installed at one end of the catheter body close to the connecting seat, the plug connector is inserted into the sleeve joint, and the expansion balloon is connected to the plug connector through the air supply microtube.

[0008] Optionally, a pressure relief solenoid valve is fixedly connected to the front side of the connecting seat near one end of the sleeve joint, an air pressure sensor is fixedly connected to the top of the pressure relief solenoid valve, and a detection end of the air pressure sensor is arranged inside the connecting seat.

[0009] Optionally, the positioning mechanism includes a rail frame, which is fixedly connected to one side of the top of the connecting seat close to the sleeve joint, the rail frame is rotatably connected to a screw rod inside, the outer surface of the screw rod is threadedly connected to a sliding block, the bottom of the sliding block is fixedly connected to a push frame, the front face of the push frame is in a hook shape, the cross-sectional shape of the plug joint is in an I-shape, and the plug joint is placed inside the push frame.

[0010] Optionally, the adjustment mechanism includes a vertical rail, which is fixedly connected to the front end of one side of the base frame close to the connecting seat, and the interior of the vertical rail is slidably connected with a sliding block, the outer side of the sliding block is fixedly connected to a limiting arm, and the outer side of the limiting arm is provided with a mounting screw, and the end of the limiting arm away from the mounting screw is connected to the driving mechanism.

[0011] Optionally, the mounting screw is configured as a hand-tightened screw, and limiting holes are provided at both upper and lower ends of a side of the vertical rail close to the mounting screw, and the ends of the mounting screw are inserted into the limiting holes.

[0012] Optionally, the driving mechanism includes a transmission gear, a limit assembly and a driving motor, the driving motor is fixedly connected to the end of the limit arm away from the mounting screw, the output end of the driving motor passes through the limit arm and is fixedly connected to the driving gear, the transmission gear is rotatably connected to the lower end of the base near the connecting seat and the end of the disinfection mechanism near the connecting seat, the transmission gear located at the bottom and the end of the screw rod are fixedly connected, and the limit assembly is fixedly installed at the lower end of one side of the base near the connecting seat and the upper end of the one side of the disinfection mechanism near the connecting seat.

[0013] Optionally, the disinfection mechanism includes a winding drum, which is fixedly connected to the upper end of the side of the base away from the connecting seat, and the transmission gear located at the upper end is rotatably connected to the middle part of the side of the winding drum close to the connecting seat, and a disinfection component is movably installed inside the winding drum, and the catheter body is wound on the outer surface of the disinfection component, and the transmission gear located at the upper end is connected to the outer side of the disinfection component, and entry and exit slots are opened in the middle of the top and the middle of the bottom of the winding drum, and the catheter body passes through the entry and exit slots.

[0014] Optionally, the disinfection component includes a turntable and an external ultraviolet lamp, the turntable is rotatably connected to the two ends of the inside of the winding drum, the upper and lower ends of the inner side of the turntable are rotatably connected to the winding shaft, the catheter body is wrapped around the outer surface of the winding shaft, the turntable close to the connecting seat side is connected to the transmission gear located at the top, the external ultraviolet lamps are arranged in a ring shape at equal intervals and fixedly connected to the inside of the winding drum, and the external ultraviolet lamps are arranged on the outside of the wound catheter body.

[0015] Optionally, an internal ultraviolet lamp is fixedly connected to the middle of the inner sides of the turntable, and the internal ultraviolet lamp is arranged in the middle of the rolled-up catheter body. Partition rods are fixedly connected at equal intervals between the inner sides of the turntable, and the partition rods are arranged between the outer side of the internal ultraviolet lamp and the rolled-up catheter body.

[0016] Optionally, the limiting assembly includes a side frame and a push rod, the side frame is respectively fixedly connected to the lower end of the base frame on one side close to the connecting seat and the upper end of the winding drum on one side close to the connecting seat, the inside of the side frame is fixedly connected to a limiting spring, the end of the limiting spring is fixedly connected to a push block, the inner side of the push block is fixedly connected to a triangular clamping block, the end of the triangular clamping block is inserted into the inner side of the tooth groove of the transmission gear, the push rod is fixedly connected to the top and bottom of the driving motor, and the outer side of the push block is fixedly connected to the push rod.

[0017] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0018] In the above scheme, the catheter device of the device integrates air pressure control and disinfection and winding functions. When in use, the air pump is started to supply air to the inflation balloon, and the air pressure sensor monitors the air pressure in real time. When the air pressure is too high, the pressure relief solenoid valve automatically opens to exhaust air to avoid excessive inflation of the balloon and cause discomfort to the patient. The catheter body can be rolled up in the winding drum. After winding, the external ultraviolet lamp and the internal ultraviolet lamp are used to irradiate and sterilize from the outer surface and inner surface of the catheter body respectively to achieve all-round disinfection. The driving motor drives the transmission gear through the driving gear, and then the turntable and winding shaft in the winding drum are rotated to complete the winding of the catheter body; the driving motor is rotated in reverse to release the catheter. This series of designs enables the device to have good disinfection function, reduce the risk of secondary infection, and the wound catheter is easy to operate and carry.

[0019] The device adopts a positioning mechanism to optimize the installation and disassembly process of the catheter during use. During installation, the plug connector is placed on the inner side of the push frame, and the drive motor is started to drive the bottom transmission gear to drive the screw to rotate. The screw drives the sliding block in the rail frame to slide, thereby driving the push frame to push the plug connector into the sleeve joint to achieve a stable connection. During disassembly, the drive motor is started in reverse, the screw rotates in the opposite direction, the sliding block and the push frame move outward, and the plug connector is pulled out of the sleeve joint. This design avoids the cumbersome disassembly and assembly method of rotating the entire catheter body and the plug connector in the traditional way. Medical staff only need to adjust the positioning mechanism to quickly complete the replacement and disassembly of the catheter body, thereby improving work efficiency.

[0020] The device realizes efficient control of the disinfection mechanism and the positioning mechanism through the coordinated cooperation of the adjustment mechanism and the driving mechanism. When no drive is needed, the sliding block in the vertical rail is moved to the middle, the mounting screw is tightened to fix it, the driving gear is disengaged from the transmission gear, and when disassembling the catheter body, the sliding block is moved downward to make the driving gear mesh with the bottom transmission gear, the driving screw is rotated, and the positioning mechanism is adjusted. When adjusting the winding of the disinfection mechanism, the sliding block is moved upward to make the driving gear mesh with the top transmission gear, and the winding shaft is driven to wind up the catheter body. The entire device uses only one driving motor, and different mechanisms can be independently driven by adjusting up and down, which reduces the motor configuration, reduces the cost, facilitates inspection and maintenance, and improves the flexibility and practicality of the device in clinical treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0025] Figure 4 It is a bottom view structural schematic diagram of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the adjusting mechanism, the positioning mechanism and the disinfecting mechanism of the present invention;

[0027] Figure 6 It is a bottom view structural diagram of the disinfection mechanism and the positioning mechanism of the present invention;

[0028] Figure 7 It is a schematic diagram of the top view of the adjustment mechanism, positioning mechanism and driving mechanism of the present invention;

[0029] Figure 8 It is a schematic diagram of the internal structure of the winding drum of the present invention;

[0030] Fig. 9 It is a schematic diagram of the limit assembly and the transmission gear structure of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the driving motor, driving gear and ejector rod of the present invention;

[0032] Fig.11 It is a schematic diagram of the internal structure of the winding drum of the present invention.

[0033] [Reference Signs]

[0034] 1. Connecting socket; 2. Air pressure sensor; 3. Air pump; 4. Socket joint; 5. Pressure relief solenoid valve;

[0035] 6. catheter device; 61. catheter body;

[0036] 62, positioning mechanism; 621, rail frame; 622, screw rod; 623, sliding block; 624, push frame;

[0037] 64, adjustment mechanism; 641, vertical rail; 642, sliding block; 643, limit arm; 644, mounting screw; 645, limit hole;

[0038] 65. driving mechanism; 651. transmission gear; 652. driving motor; 653. driving gear;

[0039] 69, limit assembly; 691, side frame; 692, push rod; 693, limit spring; 694, push block; 695, triangular clamp block; 696, push rod;

[0040] 66. Disinfection mechanism; 661. Winding drum;

[0041] 63. Disinfection assembly; 631. Turntable; 632. External UV lamp; 633. Reel; 634. Internal UV lamp; 635. Separation rod; 636. Base frame;

[0042] 663. Inlet and outlet slots; 67. Inflatable balloon; 68. Plug connector.

[0043] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0045] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0046] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0047] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0048] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0049] like Figures 1 to 11 As shown, an embodiment of the present invention provides a balloon dilatation catheter for hepatobiliary surgical treatment, including a connecting seat 1, an air pump 3 is fixedly installed at one end of the connecting seat 1, a sleeve joint 4 is fixedly connected to the outer end of the connecting seat 1, the output end of the air pump 3 is connected to the sleeve joint 4, and a catheter device 6 is fixedly connected to the top of the connecting seat 1 close to the sleeve joint 4.

[0050] The catheter device 6 includes a catheter body 61 and a positioning mechanism 62. The positioning mechanism 62 is installed on the top of the connection seat 1 near the sleeve joint 4. The top of the positioning mechanism 62 is fixedly connected to a base frame 636. The front end of the base frame 636 near the connection seat 1 is fixedly connected to an adjustment mechanism 64. The side of the adjustment mechanism 64 near the connection seat 1 is installed with a driving mechanism 65. The upper end of the side of the base frame 636 away from the connection seat 1 is fixedly connected to a disinfection mechanism 66. The catheter body 61 is rolled up on the inner side of the disinfection mechanism 66. The outer end of the tube body 61 is fixedly connected to an inflation balloon 67, and an air supply microtube is arranged inside the catheter body 61. A plug connector 68 is installed at one end of the catheter body 61 close to the connecting seat 1, and the plug connector 68 is inserted into the inside of the sleeve joint 4. The inflation balloon 67 is connected to the air supply microtube and the plug connector 68. When the device is working, the air pump 3 at one end of the connecting seat 1 is started, and the gas output by the air pump 3 enters the air supply microtube in the catheter body 61 through the sleeve joint 4 connected to the output end and the plug connector 68, thereby finally inflating the inflation balloon 67.

[0051] During the expansion process, the air pressure sensor 2 in the catheter device 6 monitors the air pressure data in real time. If it exceeds the preset threshold, the pressure relief solenoid valve 5 automatically opens to discharge excess gas to ensure appropriate air pressure and avoid patient discomfort. When the catheter needs to be installed, the positioning mechanism 62 is used to place the plug connector 68 on the inner side of the push frame 624, and the drive motor 652 in the drive mechanism 65 is started to drive the bottom transmission gear 651 to rotate, drive the screw 622 to rotate, and make the sliding block 623 in the rail frame 621 slide, push the push frame 624 to accurately insert the plug connector 68 into the sleeve connector 4 to achieve a stable connection. When disassembling, the drive motor 652 is reversed to complete the disassembly. If the catheter is to be stored and disinfected, the adjustment mechanism 64 is adjusted so that the driving motor 652 of the driving mechanism 65 drives the driving gear 653 to rotate, drives the upper transmission gear 651, drives the turntable 631 in the winding drum 661 to rotate, and the catheter body 61 is wound into the disinfection mechanism 66 through the winding shaft 633. At this time, the external ultraviolet lamp 632 and the internal ultraviolet lamp 634 in the disinfection mechanism 66 are started to sterilize the catheter body 61 in all directions. When the catheter needs to be used, the driving motor 652 is rotated in the reverse direction to release the catheter. The entire device realizes the functions of air pressure control, catheter disassembly and assembly, storage and disinfection through the coordinated work of various parts.

[0052] like Figures 1 to 4 As shown, a pressure relief solenoid valve 5 is fixedly connected to the front side of the connecting seat 1 near one end of the sleeve joint 4, and an air pressure sensor 2 is fixedly connected to the top of the pressure relief solenoid valve 5. The detection end of the air pressure sensor 2 is arranged inside the connecting seat 1. During use, when the air pump 3 is started, the gas is transported to the sleeve joint 4 through the connecting seat 1, and then flows to the catheter body 61 to supply air to the expansion balloon 67. At this time, the detection end of the air pressure sensor 2 is located inside the connecting seat 1, and the gas pressure data flowing through the connecting seat 1 is monitored in real time. Once it is detected that the air pressure exceeds a preset safety threshold, it indicates that the current air pressure may cause the expansion balloon 67 to over-expand, thereby causing discomfort to the patient or even medical risks. The air pressure sensor 2 feeds back this signal, triggering the pressure relief solenoid valve 5 to automatically open, and quickly discharges the excess gas in the connecting seat 1, so that the air pressure in the connecting seat 1 drops and is maintained within an appropriate range, ensuring that the entire balloon expansion process is carried out under safe and stable air pressure conditions, and effectively avoiding the adverse consequences caused by abnormal air pressure.

[0053] like Figures 5 to 8As shown, the positioning mechanism 62 includes a rail frame 621, and the rail frame 621 is fixedly connected to the top of the connecting seat 1 near the side of the sleeve joint 4. The rail frame 621 is internally rotatably connected to a screw rod 622, and the outer surface of the screw rod 622 is threadedly connected to a sliding block 623, and the bottom of the sliding block 623 is fixedly connected to a push frame 624. The front shape of the push frame 624 is set in a hook shape, and the cross-sectional shape of the plug connector 68 is set in an I-shaped shape. The plug connector 68 is placed inside the push frame 624. When it is necessary to install the catheter, the drive motor 652 is started, and the drive motor 652 drives the transmission gear 651 connected to the screw rod 622 to rotate, and the screw rod 622 starts to rotate inside the rail frame 621. Since the outer surface of the screw rod 622 is threadedly connected to the sliding block 623 The rotation of the screw rod 622 drives the sliding block 623 to slide along a predetermined direction inside the rail frame 621. The push frame 624 fixedly connected to the bottom of the sliding block 623 will move synchronously with the movement of the sliding block 623. The front of the push frame 624 is in the shape of a hook, and a plug connector 68 with an I-shaped cross-section is placed inside. The movement of the push frame 624 pushes the plug connector 68 toward the sleeve connector 4 until the plug connector 68 is accurately inserted into the sleeve connector 4 to complete the installation of the catheter and achieve a stable connection. When the catheter needs to be removed, the driving motor 652 runs in the reverse direction, driving the screw rod 622 to rotate in the opposite direction, and the sliding block 623 and the push frame 624 move in opposite directions to smoothly pull the plug connector 68 out of the sleeve connector 4 to complete the disassembly operation. The whole process is convenient and quick, and the disassembly and assembly process of the catheter is effectively simplified.

[0054] like Figures 6 to 8 and Figures 9 and 10 As shown, the adjustment mechanism 64 includes a vertical rail 641, and the vertical rail 641 is fixedly connected to the front end of one side of the base frame 636 close to the connecting seat 1. The vertical rail 641 is slidably connected to a sliding block 642 inside. The outer side of the sliding block 642 is fixedly connected to a limiting arm 643. The outer side of the limiting arm 643 is provided with a mounting screw 644. The end of the limiting arm 643 away from the mounting screw 644 is connected to the driving mechanism 65. The mounting screw 644 is configured as a hand-tightened screw. Limiting holes 645 are provided at both upper and lower ends of one side of the vertical rail 641 close to the mounting screw 644, and the end of the mounting screw 644 is inserted into the inside of the limiting hole 645.

[0055] The driving mechanism 65 includes a transmission gear 651, a limiting assembly 69 and a driving motor 652. The driving motor 652 is fixedly connected to one end of the limiting arm 643 away from the mounting screw 644. The output end of the driving motor 652 passes through the limiting arm 643 and is fixedly connected to the driving gear 653. The transmission gear 651 is rotatably connected to the lower end of the base 636 close to the connecting seat 1 and the end of the disinfection mechanism 66 close to the connecting seat 1. The transmission gear 651 located at the bottom is fixedly connected to the end of the screw 622. The limiting assembly 69 is fixedly installed at the lower end of the side of the base 636 close to the connecting seat 1 and the upper end of the side of the disinfection mechanism 66 close to the connecting seat 1.

[0056] The limiting assembly 69 includes a side frame 691 and a push rod 692. The side frame 691 is respectively fixedly connected to the lower end of the side of the base frame 636 close to the connecting seat 1 and the upper end of the winding drum 661 close to the connecting seat 1. The inside of the side frame 691 is fixedly connected to a limiting spring 693. The end of the limiting spring 693 is fixedly connected to a push block 694. The inner side of the push block 694 is fixedly connected to a triangular clamping block 695. The end of the triangular clamping block 695 is inserted into the inner side of the tooth groove of the transmission gear 651. The push rod 692 is fixedly connected to the top and bottom of the driving motor 652. The outer side of the push block 694 is fixedly connected to a push rod 696. The adjusting mechanism 64 cooperates with the driving mechanism 65 to realize flexible control of the positioning mechanism 62 and the disinfection mechanism 66.

[0057] The vertical rail 641 of the adjustment mechanism 64 is fixed to the front end of the base frame 636, and the sliding block 642 can slide in the vertical rail 641, and the outer side is connected to the limit arm 643, and the limit arm 643 is connected to the vertical rail 641 through a hand-tightened installation screw 644. The end of the screw is inserted into the limit hole 645 to fix the position of the sliding block 642. When it is necessary to control the positioning mechanism 62 to disassemble and assemble the catheter, loosen the installation screw 644, move the sliding block 642 downward, and drive the limit arm 643 and the drive motor 652 to move downward. The downward movement of the drive motor 652 can drive the top rod 692 at the bottom to move and move. At this time, the push rod 696 can be pushed. As the push rod 696 moves, the push rod 696 moves downward to squeeze the push block 694 to compress the limit spring 693, and as the push block 694 moves downward, the triangular block 695 can be driven to disengage from the tooth groove of the bottom transmission gear 651 to release its limit.

[0058] At the same time, the driving gear 653 at the output end of the driving motor 652 meshes with the bottom transmission gear 651, the driving motor 652 is started, the driving gear 653 drives the bottom transmission gear 651 to rotate, and then drives the screw rod 622 to rotate, so that the sliding block 623 and the push frame 624 in the positioning mechanism 62 move, and the disassembly and assembly of the plug connector 68 and the sleeve connector 4 are completed. When it is necessary to control the disinfection mechanism 66 to reel up the catheter, the sliding block 642 is moved up, the bottom limit spring 693 is reset, and the triangular block 695 is pushed to insert into the tooth groove of the bottom transmission gear 651, locking the bottom transmission gear 651. and screw rod 622. At the same time, the top push rod 692 pushes the upper push rod 696, so that the push block 694 compresses the top limit spring 693, the top transmission gear 651 is separated from the triangular block 695, and the driving gear 653 is engaged with the top transmission gear 651. The driving motor 652 is started to drive the top transmission gear 651 to drive the winding shaft 633 of the turntable 631 in the winding drum 661 to rotate, and the winding of the catheter body 61 is completed. The whole process adjusts the connection state of the driving mechanism 65 by adjusting the adjustment mechanism 64, and uses a driving motor 652 to realize independent driving of different mechanisms.

[0059] like Figures 1 to 6 and Fig.11 As shown, the disinfection mechanism 66 includes a winding drum 661, and the winding drum 661 is fixedly connected to the upper end of the side of the base frame 636 away from the connecting seat 1, and the transmission gear 651 located at the upper end is rotatably connected to the middle part of the side of the winding drum 661 close to the connecting seat 1, and the disinfection component 63 is movably installed inside the winding drum 661, and the catheter body 61 is wound on the outer surface of the disinfection component 63, and the transmission gear 651 located at the upper end is connected to the outer side of the disinfection component 63, and the middle of the top and the middle of the bottom of the winding drum 661 are provided with entry and exit slots 663, and the catheter body 61 passes through the entry and exit slots 663.

[0060] The disinfection assembly 63 includes a turntable 631 and an external ultraviolet lamp 632. The turntable 631 is rotatably connected to the two ends of the inner side of the winding drum 661. The upper and lower ends of the inner side of the turntable 631 are rotatably connected to the winding shaft 633. The catheter body 61 is wound around the outer surface of the winding shaft 633. The turntable 631 on the side close to the connecting seat 1 is connected to the transmission gear 651 at the top. The external ultraviolet lamps 632 are arranged in a ring shape with equal spacing and fixedly connected to the inside of the winding drum 661. The line lamp 632 is arranged on the outside of the rolled-up catheter body 61, and an internal ultraviolet lamp 634 is fixedly connected to the middle of the inner side of the turntable 631. The internal ultraviolet lamp 634 is arranged in the middle of the rolled-up catheter body 61. Partition rods 635 are fixedly connected at equal intervals between the inner sides of the turntable 631, and the partition rods 635 are arranged between the outside of the internal ultraviolet lamp 634 and the rolled-up catheter body 61. The disinfection mechanism 66 is mainly responsible for the storage and disinfection of the catheter body 61.

[0061] The winding drum 661 is fixed to the upper end of the side of the base frame 636 away from the connecting seat 1, and the transmission gear 651 at the upper end is rotatably connected to the middle part of the side of the winding drum 661 close to the connecting seat 1. When the driving motor 652 is engaged with the upper transmission gear 651 through the adjusting mechanism 64, the driving motor 652 drives the driving gear 653 to rotate, thereby driving the upper transmission gear 651 to rotate. The rotation of the upper transmission gear 651 drives the turntable 631 connected thereto to rotate inside the winding drum 661, and the winding shaft 633 inside the turntable 631 rotates accordingly, thereby realizing the winding or unwinding operation of the catheter body 61 wound on its outer surface. The catheter body 61 is opened between the top and bottom of the winding drum 661. In terms of disinfection, the external ultraviolet lamps 632 arranged in a ring shape at equal intervals inside the winding drum 661 irradiate and disinfect the outer surface of the catheter body 61 after it is wound up; and the internal ultraviolet lamps 634 fixed in the middle of the inner side of the turntable 631 irradiate and disinfect the middle part of the catheter body 61 after it is wound up. The dividing rods 635 fixedly connected at equal intervals between the inner sides of the turntable 631, on the one hand, play the role of a supporting structure, and on the other hand, can separate the catheter body 61 from the internal ultraviolet lamps 634, thereby ensuring that the internal ultraviolet lamps 634 can effectively disinfect the catheter body 61, avoiding direct contact that affects the disinfection effect, and finally achieving all-round and efficient disinfection of the catheter body 61 after it is wound up.

[0062] The workflow of the technical solution provided by the present invention is as follows:

[0063] Start the air pump 3 to supply air. The gas output by the air pump 3 causes the expansion balloon 67 to expand. During the expansion of the expansion balloon 67, the air pressure sensor 2 detects the air pressure data in real time. When it is detected that the air pressure exceeds the preset threshold, the pressure relief solenoid valve 5 automatically opens to discharge the excess gas, ensuring that the air pressure inside the catheter is always maintained within an appropriate range, effectively avoiding discomfort to the patient caused by excessive expansion of the expansion balloon 67.

[0064] During the storage and disinfection of the catheter, the entire catheter body 61 can be rolled up inside the winding drum 661. When the catheter body 61 is rolled up, the external ultraviolet lamp 632 and the internal ultraviolet lamp 634 are started. The external ultraviolet lamp 632 is located on the outer surface of the catheter body 61 after rolling up, and the internal ultraviolet lamp 634 is located on the inner surface of the catheter body 61 after rolling up. The two work together to perform all-round irradiation and sterilization on the rolled-up catheter body 61, which significantly improves the sterilization efficiency of the device.

[0065] In addition, the driving motor 652 drives the driving gear 653 to rotate, driving the transmission gear 651 at the upper end to operate synchronously, thereby driving the turntable 631 inside the winding drum 661 to rotate. The rotation of the turntable 631 drives the winding shaft 633 to wind up the catheter body 61, giving the device a good winding function. When the catheter needs to be used, the driving motor 652 is started to rotate in the opposite direction, and the wound catheter body 61 can be loosened and released. Through this series of designs, the device not only has an efficient disinfection function, effectively reducing the risk of secondary infection to the human body, but also the wound catheter is easy for medical staff to operate and carry, greatly improving the convenience of use.

[0066] By setting the positioning mechanism 62, the installation and removal process of the catheter is greatly optimized. During the installation process, the plug connector 68 is placed inside the push frame 624, and then the drive motor 652 is started to drive the transmission gear 651 at the bottom to rotate. The rotation of the transmission gear 651 drives the screw rod 622 to rotate. The rotation of the screw rod 622 drives the sliding block 623 inside the track frame 621 to slide along the predetermined track. The movement of the sliding block 623 drives the push frame 624 to move synchronously. The movement of the push frame 624 pushes the plug connector 68 inside it to be accurately inserted into the sleeve joint 4. The pressure applied by the push frame 624 ensures that the plug connector 68 is stably connected to the top of the sleeve joint 4.

[0067] When the catheter is removed, the drive motor 652 is started to run in reverse, driving the transmission gear 651 at the bottom to rotate in the reverse direction. The reverse rotation of the transmission gear 651 drives the screw rod 622 to rotate in the reverse direction. The reverse rotation of the screw rod 622 causes the sliding block 623 to move outward inside the rail frame 621. The outward movement of the sliding block 623 drives the push frame 624 to move outward synchronously. The outward movement of the push frame 624 smoothly pulls the plug connector 68 out of the sleeve connector 4. This design avoids the tedious operation of rotating the entire catheter body 61 and the plug connector 68 for disassembly and assembly in the traditional way. Medical staff only need to adjust the positioning mechanism 62 to quickly complete the separation of the plug connector 68 and the sleeve connector 4, thereby realizing the rapid replacement and disassembly of the catheter body 61.

[0068] This device realizes efficient control of the disinfection mechanism 66 and the positioning mechanism 62 through the coordinated cooperation of the adjustment mechanism 64 and the driving mechanism 65. When there is no need to drive the disinfection mechanism 66 and the positioning mechanism 62, the sliding block 642 inside the vertical rail 641 is slid to the middle position of the vertical rail 641, and then the mounting screw 644 is tightened to make the mounting screw 644 fit tightly against the vertical rail 641, thereby fixing the sliding block 642. At this time, the driving gear 653 at the end of the driving motor 652 is disengaged from the transmission gear 651 to ensure that the device is in standby mode.

[0069] When it is necessary to disassemble the catheter body 61, loosen the mounting screw 644 and adjust the sliding block 642 to move downward. The downward movement of the sliding block 642 drives the top rod 692 at its bottom to move downward synchronously. The downward movement of the top rod 692 pushes the push rod 696 on the outside of the push block 694 to move outward. The outward movement of the push rod 696 squeezes the limit spring 693 to shrink it. In this process, the outward movement of the push block 694 causes the triangular clamping block 695 to disengage from the tooth groove of the transmission gear 651, thereby releasing the limit on the bottom transmission gear 651. At the same time, as the sliding block 642 moves downward, the driving gear 653 on the driving motor 652 contacts and is in a meshing connection state with the bottom transmission gear 651. The driving motor 652 is started, and the driving gear 653 drives the bottom transmission gear 651 to rotate, thereby driving the screw rod 622 to rotate, thereby realizing the adjustment of the positioning mechanism 62, which is convenient for medical staff to quickly disassemble and assemble the plug connector 68 and the catheter body 61.

[0070] When it is necessary to adjust the disinfection mechanism 66 for winding operation, the adjustment sliding block 642 is moved upward. During the upward movement of the sliding block 642, the limit spring 693 at the bottom is reset, pushing the triangular clamping block 695 at its end to move upward and insert it into the tooth groove of the bottom transmission gear 651, thereby realizing the clamping and fixing of the bottom transmission gear 651 and the screw rod 622. At the same time, the upward movement of the sliding block 642 drives the top push rod 692 to push the upper push rod 696 to move outward. The outward movement of the push rod 696 squeezes the limit spring 693 at the top, prompting the top transmission gear 651 to move outward. Separated from the triangular clamping block 695, the driving gear 653 is now meshed with the transmission gear 651 at the top, and the driving motor 652 is started to drive the transmission gear 651 at the top to drive the winding shaft 633 inside the turntable 631 inside the winding drum 661 to wind up the catheter body 61. During use, the mounting screw 644 is a hand-tightened screw, which can improve the convenience of its overall operation, and the limiting hole 645 can accommodate the end of the mounting screw 644, which can improve the stability of the mounting screw 644, thereby ensuring the stability of the driving motor 652 during driving.

[0071] It can be seen that the device can independently drive the disinfection mechanism 66 and the positioning mechanism 62 to operate only by adjusting the up and down of a driving motor 652, without the need to configure multiple motors. This not only reduces the use cost of the device, but also makes subsequent inspection and maintenance work more convenient.

[0072] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0073] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A balloon dilatation catheter for hepatobiliary surgery, comprising a connection seat, characterized in that: An air pump is fixedly installed at one end of the connection seat, a sleeve joint is fixedly connected to the outer end of the connection seat, the output end of the air pump is connected to the sleeve joint, and a catheter device is fixedly connected to the top of the connection seat near the sleeve joint; The catheter device includes a catheter body and a positioning mechanism, wherein the positioning mechanism is installed on a side of the top of the connecting seat close to the sleeve joint, the top of the positioning mechanism is fixedly connected to a base frame, the front end of the base frame close to the connecting seat is fixedly connected to an adjustment mechanism, the adjustment mechanism is installed on a side close to the connecting seat, and the upper end of the base frame away from the connecting seat is fixedly connected to a disinfection mechanism, the catheter body is rolled up on the inner side of the disinfection mechanism, the outer end of the catheter body is fixedly connected to an expansion balloon, an air supply microtube is provided inside the catheter body, a plug connector is installed at one end of the catheter body close to the connecting seat, the plug connector is inserted into the sleeve joint, and the expansion balloon is connected to the plug connector through the air supply microtube.

2. The balloon dilatation catheter for hepatobiliary surgery according to claim 1, characterized in that: A pressure relief solenoid valve is fixedly connected to the front side of the connection seat near one end of the sleeve joint, and an air pressure sensor is fixedly connected to the top of the pressure relief solenoid valve. The detection end of the air pressure sensor is arranged inside the connection seat.

3. The balloon dilatation catheter for hepatobiliary surgery according to claim 1, characterized in that: The positioning mechanism includes a rail frame, which is fixedly connected to one side of the top of the connecting seat close to the sleeve joint. The rail frame is rotatably connected to a screw rod inside, and a sliding block is threadedly connected to the outer surface of the screw rod. The bottom of the sliding block is fixedly connected to a push frame, the front shape of the push frame is a hook shape, the cross-sectional shape of the plug joint is an I-shape, and the plug joint is placed inside the push frame.

4. The balloon dilatation catheter for hepatobiliary surgery according to claim 3, characterized in that: The adjustment mechanism includes a vertical rail, which is fixedly connected to the front end of one side of the base frame close to the connecting seat. A sliding block is slidably connected inside the vertical rail, and a limiting arm is fixedly connected to the outer side of the sliding block. A mounting screw is provided on the outer side of the limiting arm, and one end of the limiting arm away from the mounting screw is connected to the driving mechanism.

5. The balloon dilatation catheter for hepatobiliary surgery according to claim 4, characterized in that: The mounting screw is configured as a hand-tightening screw, and limiting holes are provided at both upper and lower ends of one side of the vertical rail close to the mounting screw, and the ends of the mounting screw are inserted into the limiting holes.

6. The balloon dilatation catheter for hepatobiliary surgery according to claim 5, characterized in that: The driving mechanism includes a transmission gear, a limit assembly and a driving motor. The driving motor is fixedly connected to the end of the limit arm away from the mounting screw. The output end of the driving motor passes through the limit arm and is fixedly connected to the driving gear. The transmission gear is rotatably connected to the lower end of the base near the connecting seat and the end of the disinfection mechanism near the connecting seat. The transmission gear at the bottom is fixedly connected to the end of the screw rod. The limit assembly is fixedly installed at the lower end of the base near the connecting seat and the upper end of the disinfection mechanism near the connecting seat.

7. The balloon dilatation catheter for hepatobiliary surgery according to claim 6, characterized in that: The disinfection mechanism includes a winding drum, which is fixedly connected to the upper end of a side of the base away from the connecting seat, and a transmission gear located at the upper end is rotatably connected to the middle part of a side of the winding drum close to the connecting seat, and a disinfection component is movably installed inside the winding drum, and the catheter body is wound on the outer surface of the disinfection component, and the transmission gear located at the upper end is connected to the outer side of the disinfection component, and entry and exit slots are opened in the middle of the top and the middle of the bottom of the winding drum, and the catheter body passes through the entry and exit slots.

8. The balloon dilatation catheter for hepatobiliary surgery according to claim 7, characterized in that: The disinfection component includes a turntable and an external ultraviolet lamp. The turntable is rotatably connected to the two ends of the winding drum. The upper and lower ends of the inner side of the turntable are rotatably connected to the winding shaft. The catheter body is wrapped around the outer surface of the winding shaft. The turntable close to the connecting seat is connected to the transmission gear located at the top. The external ultraviolet lamps are arranged in a ring shape with equal intervals and fixedly connected to the inside of the winding drum. The external ultraviolet lamp is arranged on the outside of the wound catheter body.

9. The balloon dilatation catheter for hepatobiliary surgery according to claim 8, characterized in that: An inner ultraviolet lamp is fixedly connected to the middle of the inner sides of the turntable, and the inner ultraviolet lamp is arranged in the middle of the rolled-up catheter body. Partition rods are fixedly connected to the inner sides of the turntable at equal intervals, and the partition rods are arranged between the outer side of the inner ultraviolet lamp and the rolled-up catheter body.

10. The balloon dilatation catheter for hepatobiliary surgery according to claim 8, characterized in that: The limiting assembly includes a side frame and a push rod, the side frames are respectively fixedly connected to the lower end of the base frame on one side close to the connecting seat and the upper end of the winding drum on one side close to the connecting seat, the inside of the side frame is fixedly connected to a limiting spring, the end of the limiting spring is fixedly connected to a push block, the inner side of the push block is fixedly connected to a triangular clamping block, the end of the triangular clamping block is inserted into the inner side of the tooth groove of the transmission gear, the push rod is fixedly connected to the top and bottom of the driving motor, and the outer side of the push block is fixedly connected to a push rod.

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