Modular replaceable arthroscopic knee locator

Abstract

The application relates to a modular replaceable knee arthroscope positioner, which comprises a handle, a guide sleeve mounted at the bottom, a guide needle matched in the guide sleeve, a positioning arm movable block movably mounted in the handle, a positioning arm fixedly connected to the top of the positioning arm movable block, an image acquisition module and an electromagnetic positioning transmitting module detachably connected to the positioning arm, an electromagnetic positioning receiving module mounted on the guide needle, a first circuit board mounted in the handle, a first information processing module and a first information transmitting module mounted on the first circuit board, a second circuit board mounted in the positioning arm movable block, a second information processing module and a second information transmitting module mounted on the second circuit board, and an angle adjusting component for adjusting the angle of the positioning arm mounted in the handle. The image positioning part and the electromagnetic positioning part are designed in a replaceable mode, the electromagnetic positioning and the image positioning are used together, the accuracy of surgical positioning can be improved, and the risk in the surgical process is reduced.

Description

Technical Field

[0001] This invention relates to the field of knee joint surgical equipment, and more specifically to a modular, replaceable knee arthroscopy locator. Background Technology

[0002] The knee joint is a crucial weight-bearing joint of the lower limb, and its structure and function are among the most complex of all human joints. Osteoarthritis of the knee is a common disease among the elderly. The success of knee surgery plays a vital role in the patient's full recovery and ability to walk. However, inaccurate observations during knee ligament reconstruction surgery can lead to deviations in the actual surgical procedure. Therefore, accurate observation and positioning before and during knee surgery are particularly important. Current techniques for knee joint positioning often utilize cameras for observation during minimally invasive surgery. However, in posterior cruciate ligament reconstruction surgery, the path of the guide pin within the tibia may be difficult to observe, leading to numerous uncontrollable situations during the actual operation. Summary of the Invention

[0003] The purpose of this invention is to provide a modular and replaceable knee arthroscopy locator to solve the above-mentioned problems. The image positioning part and the electromagnetic positioning part are designed to be interchangeable, which can realize the use of multiple modes. Furthermore, the combined use of electromagnetic positioning and image positioning can increase the accuracy of surgical positioning and reduce the risks during the operation.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] A modular, replaceable knee arthroscopy locator includes a handle, a guide sleeve at the bottom of the handle, a guide pin fitted inside the guide sleeve, a movable positioning arm block movably mounted inside the handle, a positioning arm fixedly connected to the top of the positioning arm block, an image acquisition module and an electromagnetic positioning transmitter module detachably connected inside the positioning arm, an electromagnetic positioning receiver module mounted on the guide pin, a first circuit board mounted inside the handle, electrically connected to the electromagnetic positioning receiver module, a first information processing module mounted on the first circuit board, the first information processing module receiving information from the electromagnetic positioning receiver module and transmitting the information from the electromagnetic positioning receiver module to a display device via a cable, a second circuit board mounted inside the positioning arm block, electrically connected to the image acquisition module and the electromagnetic positioning transmitter module, a second information processing module mounted on the second circuit board, the second information processing module receiving information from the image acquisition module and transmitting the information from the image acquisition module to the display device via a cable, and an angle adjustment component for adjusting the angle of the positioning arm mounted inside the handle.

[0006] Preferably, the positioning arm has an image component mounting channel. The image acquisition module includes a miniature camera with an LED fill light mounted on it. The miniature camera and the LED fill light are connected to an image line. Several connecting blocks are movably sleeved on the outside of the image line. The miniature camera is mounted on a connecting block located at one end. The connecting blocks are slidably disposed within the mounting channel. A locking block is movably sleeved on the outside of the image line. The locking block is mounted at one end of the mounting channel and is detachably connected to the end of the mounting channel. The locking block abuts against the connecting block at the other end. The image line is electrically connected to the second circuit board.

[0007] Preferably, the connecting block has a tapered groove at one end near the miniature camera and a tapered surface at the other end away from the miniature camera, and the connecting block with the miniature camera is fixedly connected to the image line.

[0008] Preferably, the positioning arm has an electromagnetic component mounting channel, the electromagnetic positioning transmitter module includes an electromagnetic positioning transmitter connected to an electromagnetic wire, a plurality of connecting blocks are movably sleeved on the outside of the electromagnetic wire, the electromagnetic positioning transmitter is mounted on the connecting block located at one end, the plurality of connecting blocks are slidably disposed in the electromagnetic component mounting channel, a locking block is movably sleeved on the outside of the electromagnetic wire, the locking block is mounted at one end of the electromagnetic component mounting channel, the locking block is detachably connected to the end of the mounting channel, the locking block abuts against the connecting block at the other end, and the image line is electrically connected to the second circuit board.

[0009] Preferably, the end of the mounting channel and the electromagnetic component mounting channel is provided with a tapered threaded hole, the locking block is threadedly engaged with the tapered threaded hole, the inner side of the locking block is provided with a through hole for passing through the image line and the electromagnetic line, and the locking block is provided with several gaps in the circumference.

[0010] Preferably, the display device is equipped with an image line connector and an electromagnetic line connector. The ends of the image lines are respectively connected to image line plugs, and the ends of the electromagnetic lines are connected to electromagnetic line plugs. The image line plugs are inserted into the image line connectors, and the electromagnetic line plugs are inserted into the electromagnetic line connectors. The image line connectors and electromagnetic line connectors are electrically connected to the second circuit board.

[0011] Preferably, the angle adjustment component includes slide bars fixedly connected to both sides of the movable block of the positioning arm, a slide groove is provided on the inner side of the handle, the slide bars are slidably fitted in the slide groove, a drive motor is fixedly connected inside the handle, a worm gear is shafted to the drive motor, the worm gear is rotatably connected inside the handle, the worm gear meshes with a worm wheel, a gear is shafted to the worm wheel, the gear meshes with one of the slide bars, the worm wheel and gear are rotatably fitted with the handle, and the drive motor is electrically connected to the first circuit board.

[0012] Preferably, a water pipe channel is provided inside the positioning arm, a water pipe is installed in the water pipe channel, and a water pipe plug is installed at the exposed end of the water pipe, which is inserted into an external water supply device.

[0013] The present invention has the following technical effects:

[0014] This invention designs the image acquisition module and electromagnetic positioning transmission module as detachable. When image observation is needed, only the image acquisition module needs to be installed; when electromagnetic positioning is needed, only the electromagnetic positioning transmission module needs to be installed. During posterior cruciate ligament reconstruction surgery of the knee joint, the travel of the guide needle within the tibia cannot be observed. Electromagnetic navigation can monitor the guide needle's journey within the bone. When the guide needle penetrates the bone, it can be observed endoscopically, and the guide needle can be stopped in time to avoid damage to posterior blood vessels and nerves. The combined use of these two components allows for continuous monitoring and management of the guide needle, controlling its direction of travel, and ensuring safety by stopping its operation promptly when it penetrates the bone. The angle adjustment component allows for adjustment of the angle between the guide needle and the positioning arm, which can be adjusted according to actual needs. The procedure can be performed using either image-based positioning or electromagnetic positioning. The electromagnetic positioning transmitter module is mainly responsible for transmitting electromagnetic information, while the electromagnetic positioning receiver module receives the information emitted by the transmitter module. The first information transmitter module sends the relevant signal information to the display device for display, thereby determining the positioning status. The image acquired by the image acquisition module is processed by the second information processing module, and then the second information transmitter module sends the relevant signal information to the display device for display to confirm the positioning status. If high-precision positioning is required, a combination of image and electromagnetic positioning can be used. Utilizing the penetrability of electromagnetic positioning, key areas such as blood vessels can be effectively avoided during the puncture process, providing a good foundation for the implementation of the surgery. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a partial cross-sectional view of the positioning arm of the present invention;

[0018] Figure 3 This is a schematic diagram of the mating structure of the connecting block and locking block of the present invention;

[0019] Figure 4 This is a schematic diagram of the mating structure of the positioning arm and locking block of the present invention;

[0020] Figure 5 This is a schematic diagram of the right side of the image cable connector and the electromagnetic cable connector of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the display device of the present invention.

[0022] The components include: 1. Positioning arm; 101. Positioning arm movable block; 102. Image component mounting channel; 103. Electromagnetic component mounting channel; 104. Tapered threaded hole; 105. Image line socket; 106. Electromagnetic line socket; 107. Slide bar; 108. Water pipe channel; 2. Handle; 3. Guide sleeve; 4. Guide pin; 5. Image line; 501. Connecting block; 502. Locking block; 503. Gap; 504. Image line plug; 6. Electromagnetic line; 601. Electromagnetic line plug; 7. Gear; 8. Worm gear; 9. Worm; 10. Drive motor; 11. Water pipe; 1101. Water pipe plug; 12. Display device. Detailed Implementation

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

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figures 1 to 6As shown, this embodiment provides a modular replaceable knee arthroscopy locator, including a handle 2, a guide sleeve 3 installed at the bottom of the handle 2, a guide pin 4 fitted inside the guide sleeve 3, a positioning arm movable block 101 movably installed inside the handle 2, a positioning arm 1 fixedly connected to the top of the positioning arm movable block 101, an image acquisition module and an electromagnetic positioning transmitter module detachably connected inside the positioning arm 1, an electromagnetic positioning receiver module installed on the guide pin 4, a first circuit board installed inside the handle 2, the first circuit board being electrically connected to the electromagnetic positioning receiver module, a first information processing module installed on the first circuit board, the first information processing module being used to receive information from the electromagnetic positioning receiver module and send the information from the electromagnetic positioning receiver module to a display device 12 via a cable, a second circuit board installed inside the positioning arm movable block 101, the second circuit board being electrically connected to the image acquisition module and the electromagnetic positioning transmitter module, a second information processing module installed on the second circuit board, the second information processing module being used to receive information from the image acquisition module and send the information from the image acquisition module to the display device 12 via a cable, and an angle adjustment component for adjusting the angle of the positioning arm 1 installed inside the handle 2.

[0026] This invention designs the image acquisition module and electromagnetic positioning transmission module as detachable. When image observation is needed, only the image acquisition module needs to be installed; when electromagnetic positioning is needed, only the electromagnetic positioning transmission module needs to be installed. During posterior cruciate ligament reconstruction surgery of the knee joint, the travel of the guide needle within the tibia cannot be observed. Electromagnetic navigation can monitor the guide needle's journey within the bone. When the guide needle penetrates the bone, it can be observed endoscopically, and the guide needle can be stopped in time to avoid damage to posterior blood vessels and nerves. The combined use of these two components allows for continuous monitoring and management of the guide needle, controlling its direction of travel, and ensuring safety by stopping its operation promptly when it penetrates the bone. The angle adjustment component adjusts the angle between the guide needle 4 and the positioning arm 1, allowing for adjustments based on actual conditions. The system can choose between image-based positioning or electromagnetic positioning. The electromagnetic positioning transmitter module is mainly responsible for transmitting electromagnetic information, while the electromagnetic positioning receiver module receives the information transmitted by the transmitter module. The first information transmitter module sends the relevant signal information to the display device 12 for display, thereby determining the positioning status. The image acquired by the image acquisition module is processed by the second information processing module and then sent to the display device 12 for display to confirm the positioning status. If high-precision positioning is required, image-based positioning combined with electromagnetic positioning can be used. By utilizing the penetrating power of electromagnetic positioning, the travel path of the guide needle can be effectively monitored, allowing for effective planning and adjustments.

[0027] Further optimization of the scheme: The positioning arm 1 has an image component mounting channel 102. The image acquisition module includes a miniature camera, an LED fill light mounted on the miniature camera, and an image line 5 connected to the miniature camera and the LED fill light. Several connecting blocks 501 are movably sleeved on the outside of the image line 5. The miniature camera is mounted on the connecting block 501 located at the end. The connecting blocks 501 are slidably disposed in the mounting channel 102. A locking block 502 is movably sleeved on the outside of the image line 5. The locking block 502 is installed at the end of the mounting channel 102 and is detachably connected to the end of the mounting channel 102. The locking block 502 abuts against the connecting block 501 at the other end. The image line 5 is electrically connected to the second circuit board.

[0028] In a further optimized design, a tapered groove is provided at the end of the connecting block 501 closest to the miniature camera, and a tapered surface is provided at the end of the connecting block 501 furthest from the miniature camera. The connecting block 501 with the miniature camera installed is fixedly connected to the image line 5.

[0029] Further optimization of the scheme: An electromagnetic component installation channel 103 is provided inside the positioning arm 1. The electromagnetic positioning transmitter module includes an electromagnetic positioning transmitter, which is connected to an electromagnetic wire 6. Several connecting blocks 501 are movably sleeved on the outside of the electromagnetic wire 6. The electromagnetic positioning transmitter is installed on the connecting blocks 501 located at the end. The connecting blocks 501 are slidably disposed in the electromagnetic component installation channel 103. A locking block 502 is movably sleeved on the outside of the electromagnetic wire 6. The locking block 502 is installed at the end of the electromagnetic component installation channel 103. The locking block 502 is detachably connected to the end of the installation channel 102. The locking block 502 abuts against the connecting block 501 at the other end. The image line 5 is electrically connected to the second circuit board.

[0030] The signal transmission between the first circuit board, the second circuit board and the display device 12 is achieved by connecting the image cable plug (504) and the electromagnetic cable plug (601) to transmit relevant information to the display device 12. The display device 12 can be equipped with a PC host with processing capabilities to cooperate with the monitor.

[0031] The connecting block 501 is set to a sliding state, so that when the image line 5 and the electromagnetic line 6 are tightened, the locking block 502 can tighten the multiple connecting blocks 501 into a rigid column shape. This makes it easy to insert the miniature camera into the image component mounting channel 102 and the electromagnetic positioning transmitter into the electromagnetic component mounting channel 103. The design of the conical surface and conical groove on the connecting block 501 allows the multiple connecting blocks 501 to stick together when tightened, making it easier to pass into the image component mounting channel 102 and the electromagnetic component mounting channel 103. After installation, the locking block 502 can press the multiple connecting blocks 501 together, which can effectively prevent the electromagnetic positioning transmitter and the miniature camera from shaking.

[0032] The conical groove on the connecting block 501 can be designed as a ball groove, and the conical surface on the connecting block 501 can be designed as a ball head, so that adjacent ball grooves and ball heads can cooperate with each other. With this design, when inserting a miniature camera or electromagnetic positioning transmitter, the electromagnetic wire 6 or image wire 5 does not need to be tightened, making it more convenient in actual replacement.

[0033] To further optimize the design, tapered threaded holes 104 are provided at the ends of the installation channel 102 and the electromagnetic component installation channel 103. The locking block 502 is threadedly engaged with the tapered threaded hole 104. A through hole for passing through the image line 5 and the electromagnetic line 6 is provided on the inner side of the locking block 502. Several gaps 503 are provided around the locking block 502.

[0034] The structural design of the locking block 502 allows for a gradual tightening process after it is screwed into the tapered threaded hole 104, which can fix the electromagnetic wire 6 and the image line 5.

[0035] In a further optimized design, the display device 12 is equipped with an image line connector 105 and an electromagnetic line connector 106. The ends of the image lines 5 are connected to image line plugs 504, and the ends of the electromagnetic lines 6 are connected to electromagnetic line plugs 601. The image line plugs 504 are inserted into the image line connector 105, and the electromagnetic line plugs 601 are inserted into the electromagnetic line connector 106. The image line connectors 105 and 106 are electrically connected to the second circuit board.

[0036] The design of the image cable connector 105 and the electromagnetic cable connector 106 allows for easy disassembly and installation of the image cable 5 and the electromagnetic cable 6.

[0037] The optimized design includes an angle adjustment component consisting of slide bars 107 fixedly connected to both sides of the movable block 101 of the positioning arm. A groove is provided on the inner side of the handle 2, and the slide bars 107 are slidably fitted in the groove. A drive motor 10 is fixedly connected inside the handle 2. A worm gear 9 is connected to the shaft of the drive motor 10. The worm gear 9 is rotatably connected inside the handle 2. The worm gear 9 meshes with a worm wheel 8. A gear 7 is connected to the shaft of the worm wheel 8. The gear 7 meshes with one of the slide bars 107. The worm wheel 8 and the gear 7 are rotatably fitted with the handle 2. The drive motor 10 is electrically connected to the first circuit board.

[0038] The drive motor 10 is powered by an externally connected drive motor 10, which drives the worm gear 8, which in turn drives the gear 7. The gear 7 drives the slide bar 107 to slide in the groove. By controlling the rotation angle and number of rotations of the drive motor 10, the movement of the positioning arm movable block 101 in the handle 2 can be pushed, thereby achieving the purpose of adjusting the angle of the positioning arm 1 and the handle 2. At the same time, the worm gear 8 and the worm 9 have a certain self-locking function, which can prevent the positioning arm 1 and the handle 2 from shifting again after adjustment.

[0039] The design is further optimized by providing a water pipe channel 108 inside the positioning arm 1, a water pipe 11 inside the water pipe channel 108, and a water pipe plug 1101 installed at the exposed end of the water pipe 11. The water pipe plug 1101 is inserted into the external water supply device.

[0040] The purpose of setting up the water pipe 11 is to continuously irrigate the joint cavity with physiological saline through the water pipe 11 to fill the joint cavity and thus obtain the surgical field of view.

[0041] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0042] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A modular, replaceable knee arthroscopy locator, characterized in that, The device includes a handle (2), a guide sleeve (3) installed at the bottom of the handle (2), a guide pin (4) fitted inside the guide sleeve (3), a positioning arm movable block (101) movably installed inside the handle (2), a positioning arm (1) fixedly connected to the top of the positioning arm movable block (101), an image acquisition module and an electromagnetic positioning transmission module detachably connected inside the positioning arm (1), an electromagnetic positioning receiving module installed on the guide pin (4), a first circuit board installed inside the handle (2), the first circuit board being electrically connected to the electromagnetic positioning receiving module, and a first information processing module installed on the first circuit board. The processing module is used to receive information from the electromagnetic positioning receiving module and send the information from the electromagnetic positioning receiving module to the display device (12) via the cable. A second circuit board is installed in the positioning arm movable block (101). The second circuit board is electrically connected to the image acquisition module and the electromagnetic positioning transmitting module. A second information processing module is installed on the second circuit board. The second information processing module is used to receive information from the image acquisition module and send the information from the image acquisition module to the display device (12) via the cable. An angle adjustment component for adjusting the angle of the positioning arm (1) is installed in the handle (2). The positioning arm (1) has an image component mounting channel (102) inside. The image acquisition module includes a miniature camera. An LED fill light is installed on the miniature camera. The miniature camera and the LED fill light are connected to an image line (5). Several connecting blocks (501) are movably sleeved on the outside of the image line (5). The miniature camera is installed on the connecting block (501) located at the end. Several connecting blocks (501) are slidably disposed in the mounting channel (102). A locking block (502) is movably sleeved on the outside of the image line (5). The locking block (502) is installed at the end of the mounting channel (102). The locking block (502) is detachably connected to the end of the mounting channel (102). The locking block (502) abuts against the connecting block (501) at the other end. The image line (5) is electrically connected to the second circuit board. The connecting block (501) has a tapered groove at one end near the miniature camera and a tapered surface at the other end away from the miniature camera. The connecting block (501) with the miniature camera is fixedly connected to the image line (5). The positioning arm (1) has an electromagnetic component installation channel (103) inside. The electromagnetic positioning transmitter module includes an electromagnetic positioning transmitter. The electromagnetic positioning transmitter is connected to an electromagnetic wire (6). Several connecting blocks (501) are movably sleeved on the outside of the electromagnetic wire (6). The electromagnetic positioning transmitter is installed on the connecting block (501) located at the end. Several connecting blocks (501) are slidably disposed in the electromagnetic component installation channel (103). The locking block (502) is movably sleeved on the outside of the electromagnetic wire (6). The locking block (502) is installed at the end of the electromagnetic component installation channel (103). The locking block (502) is detachably connected to the end of the installation channel (102). The locking block (502) abuts against the connecting block (501) at the other end. The image line (5) is electrically connected to the second circuit board. The ends of the installation channel (102) and the electromagnetic component installation channel (103) are provided with tapered threaded holes (104). The locking block (502) is threadedly engaged with the tapered threaded hole (104). The inner side of the locking block (502) is provided with through holes for passing through the image line (5) and the electromagnetic line (6). The locking block (502) is provided with several slits (503) in the circumferential direction.

2. The modular replaceable knee arthroscopy locator according to claim 1, characterized in that, The display device (12) is equipped with an image line connector (105) and an electromagnetic line connector (106). The ends of the image lines (5) are connected to image line plugs (504), and the ends of the electromagnetic lines (6) are connected to electromagnetic line plugs (601). The image line plugs (504) are inserted into the image line connector (105), and the electromagnetic line plugs (601) are inserted into the electromagnetic line connector (106). The image line connector (105) and the electromagnetic line connector (106) are electrically connected to the second circuit board.

3. The modular replaceable knee arthroscopy locator according to claim 1, characterized in that, The angle adjustment component includes slide bars (107) fixedly connected to both sides of the movable block (101) of the positioning arm. The handle (2) has a groove on its inner side. The slide bars (107) are slidably fitted in the groove. A drive motor (10) is fixedly connected inside the handle (2). The drive motor (10) is shaft-connected to a worm gear (9). The worm gear (9) is rotatably connected inside the handle (2). The worm gear (9) meshes with a worm wheel (8). The worm wheel (8) is shaft-connected to a gear (7). The gear (7) meshes with one of the slide bars (107). The worm wheel (8) and the gear (7) are rotatably fitted with the handle (2). The drive motor (10) is electrically connected to the first circuit board.

4. The modular replaceable knee arthroscopy locator according to claim 1, characterized in that, The positioning arm (1) has a water pipe channel (108) inside, and a water pipe (11) is installed inside the water pipe channel (108). A water pipe plug (1101) is installed on the exposed end of the water pipe (11), and the water pipe plug (1101) is inserted into the external water supply device.

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