Prosthetic joint connection device and prosthetic limb

Abstract

This application discloses a prosthetic joint connection device and a prosthesis. The prosthetic joint connection device includes a base, one end of which has an open connection cavity with a through hole radially provided in the cavity wall; a rotating seat is sleeved on the outside of the base and can rotate relative to the base; one end of a connector can enter the connection cavity through the open end of the connection cavity, and the connector has a locking part; a locking member is provided between the base and the rotating seat, and the locking member has a mating part. The mating part can extend into the connection cavity through the through hole and engage with the locking part under the rotation drive of the rotating seat, or exit the connection cavity to release the engagement with the locking part. This application adopts a mating form in which the mating part and the locking part engage with each other, which can effectively avoid the problems of stress concentration, wear and loosening in traditional connection structures, improve the load-bearing safety and stability of the connection structure, simplify the disassembly and assembly process, avoid jamming and sticking, and balance connection reliability and disassembly and assembly convenience.

Description

Technical Field

[0001] This application relates to the field of prostheses, and in particular to a prosthesis joint connection device and a prosthesis. Background Technology

[0002] Prostheses are key rehabilitation aids for people with limb disabilities to compensate for limb loss and rebuild their ability to move independently. In daily activities, they undertake core functions such as weight-bearing and posture maintenance. As the core components of a prosthesis, the connection structure between the joint and the socket directly affects the overall performance of the prosthesis.

[0003] To balance structural reliability and ease of assembly and disassembly, quick-release prosthetic connection devices in related technologies mostly employ two types of structures: threaded locking connections or plug-in pin positioning connections. These rely on the engagement and locking of the threaded pair and the insertion and positioning of the pin holes to achieve component docking. However, these quick-release devices have the following drawbacks in actual long-term use: Under combined loads such as reciprocating impacts and lateral torsion during walking, threaded connections are prone to stress concentration and fatigue cracks, reducing structural load-bearing safety. Furthermore, irreversible clearances formed by long-term wear of components can disrupt the coaxiality of the joint and receiving cavity, severely interfering with gait stability. Repeated insertion and removal of pins and holes can lead to wear, loosening, and positioning deviations, increasing the risk of radial movement or even accidental pin detachment under stress, posing significant safety hazards. Additionally, the pin insertion, removal, locking, and unlocking processes are cumbersome and prone to jamming. At the same time, both types of traditional structures require specialized tools, resulting in a high operational threshold, and people with limb disabilities cannot independently and efficiently complete the assembly and disassembly operations, significantly reducing the ease of use and flexibility of prostheses. Summary of the Invention

[0004] The main purpose of this application is to propose a prosthesis joint connection device and a prosthesis, which aims to improve the ease of operation, load-bearing safety and structural stability of the prosthesis joint connection, simplify the disassembly and assembly process, and avoid problems such as jamming, stress concentration, wear and loosening.

[0005] To achieve the above objectives, this application proposes a prosthetic joint connection device, comprising: A base, one end of which is configured with an open connecting cavity, the cavity wall of which is provided with a through hole in the radial direction; A rotating seat, which is sleeved on the outside of the base and is rotatable relative to the base; A connector, one end of which can enter the connecting cavity through the open end of the connecting cavity, and the connector is provided with a snap-fit ​​part; A locking element is provided between the base and the rotating seat. The locking element has a mating part. The mating part can extend into the connecting cavity through the through hole and engage with the snap-fit ​​part under the rotation drive of the rotating seat, or exit the connecting cavity to release the snap-fit ​​engagement with the snap-fit ​​part.

[0006] In some embodiments, the rotating seat has a track on the side facing the base, the track extends circumferentially along the rotating seat, and the inner diameter of the track gradually decreases or increases along the rotation direction of the rotating seat; The locking member is slidably disposed within the track at one end away from the connecting cavity. The locking member can slide along the track as the rotating seat rotates to achieve radial displacement of the mating part along the base.

[0007] In some embodiments, the snap-fit ​​portion is a groove provided on the outer side wall of the connector, and the mating portion is a protrusion provided on one end of the locking member, wherein the protrusion can be embedded in the groove to form a snap-fit ​​engagement.

[0008] In some embodiments, the locking member is a spherical structure, the diameter of the sphere is adapted to the inner diameter of the through hole, the surface of the sphere forms the mating part, and the sphere can slide along the axial direction of the through hole under the drive of the rotating seat to extend into or exit the connecting cavity.

[0009] In some embodiments, a plurality of locking members are provided, and the plurality of locking members are evenly spaced along the circumference of the base; The through holes are provided in multiple ways, and each of the through holes corresponds to one of the locking elements. Each through hole penetrates the side wall of the base and communicates with the connecting cavity. The track is provided in multiple ways, and each track corresponds to a locking element. Each track extends circumferentially along the rotating seat, and the end of each locking element away from the connecting cavity is slidably disposed in one of the tracks.

[0010] In some embodiments, the prosthetic joint connection device further includes a stop component, the stop component comprising: Several locking teeth are spaced apart along the circumference of the base on the outer side wall of the base; A chuck is movably disposed on the rotating seat, the chuck is adapted to the chuck tooth, and the chuck can engage or disengage from the chuck tooth.

[0011] In some embodiments, the rotating base is provided with mounting holes that extend through its inner and outer sides, and the pawl is rotatably disposed in the mounting holes via a rotating shaft. One end of the pawl can abut against or disengage from the pawl teeth, and the other end of the pawl is exposed outside the rotating base.

[0012] In some embodiments, the prosthetic joint connection device further includes a control component, the control component including a button, the button being movably disposed in the mounting hole, one end of the button being exposed on the outer side wall of the rotating seat, and the other end being connected to the pawl.

[0013] In some embodiments, the control component further includes an elastic element connected to the button, the elastic element being configured to provide the button with an outward orientation toward the rotating base.

[0014] This application also provides a prosthesis, including a prosthesis socket, a prosthesis joint component, and a prosthesis joint connection device as described above, wherein the base of the prosthesis joint connection device is connected to the prosthesis socket, and the connector of the prosthesis joint connection device is connected to the prosthesis joint component.

[0015] This application's technical solution utilizes the rotation of a rotating base relative to the base to drive a locking component to radially displace along the base. This allows the mating part of the locking component to extend into the connecting cavity through a through-hole on the base and engage with the locking part of the connector, achieving rapid locking between the base and the connector. Reversing the rotation of the rotating base drives the mating part out of the connecting cavity and releases the engagement with the locking part, enabling rapid disengagement between the connector and the base. The overall structure relies on the linkage of mechanical structures to achieve locking and unlocking, eliminating the need for special tools. This is convenient and suitable for independent operation by people with limb disabilities. The interlocking engagement of the mating and locking parts effectively avoids stress concentration, wear, and loosening problems common in traditional connection structures, improving the load-bearing safety and stability of the connection structure. It also simplifies the assembly and disassembly process, avoiding jamming and sticking, balancing connection reliability and ease of assembly and disassembly. Furthermore, the strong adaptability of each component structure allows for long-term stable adaptation to the combined loads of daily prosthesis use, further enhancing the overall user experience and adaptability of the prosthesis. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the prosthetic joint connection device of this application; Figure 2 This is a disassembly diagram of an embodiment of the prosthesis joint connection device of this application; Figure 3 This is a front view of an embodiment of the prosthetic joint connection device of this application; Figure 4 for Figure 3 A cross-sectional schematic diagram of AA in the middle; Figure 5 This is a partial structural disassembly diagram of an embodiment of the prosthesis joint connection device of this application.

[0017] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0021] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0022] Please refer to Figures 1 to 4 This application provides a prosthetic joint connection device 100, comprising: The base 10 has an open connecting cavity 11 at one end, and the cavity wall of the connecting cavity 11 has a through hole 12 in the radial direction. Rotary seat 20 is sleeved on the outside of base 10 and can rotate relative to base 10; The connector 30 has one end that can enter the connecting cavity 11 through the open end of the connecting cavity 11, and the connector 30 is provided with a snap-fit ​​part 31; Locking member 40 is provided between base 10 and rotating seat 20. Locking member 40 is provided with mating part 41. The mating part 41 can be inserted into the connecting cavity 11 through the through hole 12 and engaged with the locking part 31 under the rotation drive of rotating seat 20, or it can be withdrawn from the connecting cavity 11 to release the engagement with the locking part 31.

[0023] In this embodiment, the base 10 serves as the basic supporting component of the entire connecting device. The open connecting cavity 11 at one end provides installation space for the connector 30, enabling the connector 30 to be initially docked and positioned with the base 10. The through hole 12 radially arranged in the cavity wall of the connecting cavity 11 provides a through channel for the locking member 40, allowing the locking member 40 to extend into or out of the connecting cavity 11 radially along the base 10, thereby achieving locking and unlocking of the connector 30 and the base 10. At the same time, the base 10 as a whole provides stable installation support for the rotating seat 20 and the locking member 40, ensuring the stability of the linkage and cooperation of each component.

[0024] The rotating seat 20 is sleeved on the outside of the base 10. As a power drive component, it can rotate circumferentially relative to the base 10. The rotational action drives the locking member 40 to move radially along the base 10, providing power support for the extension and retraction of the locking member 40. At the same time, the structural design of the rotating seat 20 can limit and guide the locking member 40, ensuring the precise movement trajectory of the locking member 40 and avoiding problems such as offset or jamming of the locking member 40, thus ensuring the smoothness of locking and unlocking actions.

[0025] The connector 30 is used to connect the prosthesis joint and the receiving cavity and other components. One end of the connector 30 can enter the connecting cavity 11 through the open end of the connecting cavity 11 to achieve docking with the base 10. The snap-fit ​​part 31 provided on the connector 30 is used to form a snap-fit ​​engagement with the mating part 41 of the locking part 40, providing a mating basis for locking the connector 30 and the base 10. The snap-fit ​​structure achieves precise positioning of the connector 30 and the base 10, ensuring coaxiality after connection, and transmitting power and load during limb movement.

[0026] The locking element 40 is located between the base 10 and the rotating seat 20 to lock and unlock the connector 30 from the base 10. The mating part 41 on the locking element 40 is adapted to the snap-fit ​​part 31 of the connector 30. Under the rotation drive of the rotating seat 20, the mating part 41 can extend into the connecting cavity 11 through the through hole 12 to form a stable snap-fit ​​with the snap-fit ​​part 31, thereby locking and fixing the connector 30 in the connecting cavity 11 of the base 10. When the rotating seat 20 is rotated in the opposite direction, the mating part 41 can exit the connecting cavity 11, releasing the snap-fit ​​with the snap-fit ​​part 31, thereby loosening the connector 30 from the base 10 and providing protection for the disassembly and assembly of the connector 30.

[0027] The specific configuration of the latching part 31 and the mating part 41 can be flexibly selected according to actual adaptation requirements. For example, the latching part 31 can be configured as an annular groove 311, an arc-shaped groove, or a stepped groove, and the mating part 41 can be configured as a latching protrusion 411, an arc-shaped block, or a stepped platform that is adapted to the latching part 31. The above configuration is only an example and is not limited to it. As long as the structure can achieve stable latching and mating of the two and meet the requirements of locking and unlocking, it is acceptable.

[0028] The way in which the mating part 41 extends into the connecting cavity 11 through the through hole 12 under the rotation drive of the rotating seat 20 can be flexibly designed. For example, a track 21 extending circumferentially and with a gradually changing inner diameter can be provided on the side of the rotating seat 20 facing the base 10. The end of the locking member 40 away from the mating part 41 is slidably embedded in the track 21. When the rotating seat 20 rotates circumferentially relative to the base 10, the track 21 will generate a radial guiding force on the locking member 40, pushing the locking member 40 to move radially towards the connecting cavity 11 along the base 10, thereby driving the mating part 41 to pass through the through hole 12 on the base 10 and extend into the connecting cavity 11, forming a snap-fit ​​with the snap-fit ​​part 31 on the connector 30. When the rotating seat 20 is rotated in the opposite direction, the guiding force of the track 21 is reversed, driving the locking member 40 and the mating part 41 to exit the connecting cavity 11.

[0029] In addition, this action can be achieved through other structures. For example, a cam structure is provided on the inner side of the rotating seat 20, and the end of the locking member 40 away from the mating part 41 abuts against the cam structure. When the rotating seat 20 rotates relative to the base 10, the contour change of the cam structure will generate a radial pushing force on the locking member 40, driving the locking member 40 to move along the through hole 12 toward the connecting cavity 11, thereby driving the mating part 41 to extend into the connecting cavity 11. Alternatively, a threaded transmission structure is provided between the rotating seat 20 and the locking member 40. When the rotating seat 20 rotates, the locking member 40 is driven to move radially along the base 10 through thread engagement, realizing the extension and retraction of the mating part 41, thereby realizing the mating part 41 extending into or out of the connecting cavity 11. All structural designs that can drive the mating part 41 to extend and retract along the through hole 12 by rotating the rotating seat 20 are within the protection scope of this application.

[0030] In this embodiment, the rotation of the rotating seat 20 relative to the base 10 drives the locking member 40 to move radially along the base 10, so that the mating part 41 of the locking member 40 extends into the connecting cavity 11 through the through hole 12 on the base 10 and forms a snap-fit ​​with the snap-fit ​​part 31 of the connector 30, thereby realizing the rapid locking of the base 10 and the connector 30. By rotating the rotating seat 20 in the opposite direction, the mating part 41 can be driven out of the connecting cavity 11 and the engagement with the snap-fit ​​part 31 can be released, thereby realizing the rapid release of the connector 30 from the base 10. The overall structure relies on the linkage of the mechanical structure to achieve locking and unlocking, without the need for special tools, making it convenient to operate and suitable for independent operation by people with physical disabilities. This application adopts a mating form in which the mating part 41 and the snap-fit ​​part 31 snap together, which can effectively avoid the problems of stress concentration, wear and looseness in traditional connection structures, improve the load-bearing safety and stability of the connection structure, simplify the disassembly and assembly process, avoid jamming and sticking, take into account the reliability of connection and the convenience of disassembly and assembly, and the structure of each component is highly adaptable, which can stably adapt to the combined loads in the daily use of prostheses for a long time, further improving the overall user experience and adaptability of prostheses.

[0031] Please continue to refer to this. Figure 4 In some embodiments, the rotating seat 20 is provided with a track 21 on the side facing the base 10. The track 21 extends circumferentially along the rotating seat 20, and the inner diameter of the track 21 gradually decreases or increases along the rotation direction of the rotating seat 20. The locking member 40 is slidably disposed in the track 21 at one end away from the connecting cavity 11. The locking member 40 can slide along the track 21 as the rotating seat 20 rotates to achieve the radial displacement of the mating part 41 along the base 10.

[0032] In this embodiment, the track 21 provided on the side of the rotating seat 20 facing the base 10 extends circumferentially and has a gradually changing inner diameter. The track 21 serves as a guide and drive structure for the locking member 40 and is used to accommodate the end of the locking member 40 away from the connecting cavity 11. When the rotating seat 20 rotates circumferentially relative to the base 10, the gradual change in the inner diameter of the track 21 generates a radial guiding force on the locking member 40, thereby driving the locking member 40 to move radially along the base 10 and providing stable power for the extension and retraction of the mating part 41.

[0033] It should be noted that the inner diameter of the track 21 gradually decreases or increases along the rotation direction of the rotating seat 20. Specifically, as the track 21 extends circumferentially around the rotating seat 20, the inner diameter of its inner contour on the side closest to the base 10 is in a continuous and gradual change state. That is, along the preset rotation direction of the rotating seat 20, the inner diameter of the track 21 gradually decreases, or along the opposite rotation direction of the rotating seat 20, the inner diameter of the track 21 gradually increases. This gradual structure can provide continuous radial guidance and pushing effect on the locking member 40 embedded in the track 21 when the rotating seat 20 rotates, ensuring that the locking member 40 can achieve smooth radial displacement with the rotation of the rotating seat 20, thereby accurately driving the mating part 41 to complete the extension and retraction action.

[0034] The locking member 40 is located between the base 10 and the rotating seat 20. Its end away from the connecting cavity 11 is slidably embedded in the track 21. It can slide synchronously along the track 21 as the rotating seat 20 rotates. With the help of the gradual structure of the track 21, it can achieve precise displacement of itself in the radial direction of the base 10, thereby driving its mating part 41 to extend into or out of the connecting cavity 11 through the through hole 12 of the base 10, realizing the engagement and separation with the locking part 31 of the connector 30, and completing the locking and unlocking of the connector 30 and the base 10.

[0035] In this embodiment, the track 21 extends circumferentially along the rotating seat 20 and has a gradually changing inner diameter. This design provides stable and precise radial guidance and driving force to the locking member 40 when the rotating seat 20 rotates, ensuring smooth radial displacement of the locking member 40 along the base 10 and preventing issues such as offset or jamming. This also ensures the precise and reliable extension and retraction of the mating part 41. The locking member 40 slides within the track 21, and this sliding fit effectively distributes the force, reduces component wear, extends the device's service life, and improves the stability of locking and unlocking actions. The entire linkage structure relies on the natural coordination of the mechanical structure to achieve power transmission, eliminating the need for additional power components. The structure is simple and easy to assemble, enabling rapid locking and unlocking of the connecting member 30 and the base 10. This allows for independent operation by people with limb disabilities and improves the load-bearing stability of the connection structure, avoiding problems such as loosening and shifting that are common in traditional structures. This further ensures the safety and reliability of the prosthesis during use.

[0036] In some embodiments, the snap-fit ​​portion 31 is a groove 311 provided on the outer side wall of the connector 30, and the mating portion 41 is a protrusion 411 provided on one end of the locking member 40. The protrusion 411 can be embedded in the groove 311 to form a snap-fit ​​engagement.

[0037] In this embodiment, the groove 311 provided on the outer side wall of the connector 30 forms a snap-fit ​​portion 31. The groove 311 is used to provide a receiving space to fit the mating portion 41 of the locking member 40. Through the fitting and engagement with the mating portion 41, the connector 30 and the base 10 are accurately positioned. At the same time, the locking force transmitted by the locking member 40 is borne to ensure the stability of the connector 30 after it is connected to the base 10, thereby reliably transmitting the load and power during limb movement.

[0038] The locking member 40 is located between the base 10 and the rotating seat 20. A protrusion 411 at one end forms a mating part 41. The protrusion 411 is adapted to the groove 311 on the outer side wall of the connector 30. Under the drive of the rotating seat 20, the locking member 40 moves radially along the base 10. When the locking member 40 moves toward the connecting cavity 11, the protrusion 411 can be embedded in the groove 311 to form a stable engagement, thereby locking the connector 30 and the base 10. When the locking member 40 moves in the opposite direction, the protrusion 411 disengages from the groove 311, releasing the engagement and thus loosening the connector 30 from the base 10.

[0039] In this embodiment, the snap-fit ​​part 31 is designed as a groove 311 and the mating part 41 is designed as a protrusion 411. The structure design is simple and reasonable. The fitting of the two can form a precise positioning and locking effect, effectively restricting the radial and axial movement of the connector 30 and improving the stability of the connection between the connector 30 and the base 10. The mating method of the protrusion 411 being embedded in the groove 311 can effectively disperse the locking force and the load during use, avoid local stress concentration, reduce component wear, and extend the service life of the device.

[0040] In some embodiments, the locking member 40 is a spherical structure, the diameter of the sphere is adapted to the inner diameter of the through hole 12, and the surface of the sphere forms a mating part 41. The sphere can slide along the axial direction of the through hole 12 under the drive of the rotating seat 20 to extend into or exit the connecting cavity 11.

[0041] In this embodiment, the locking member 40 is a spherical structure with a diameter that matches the inner diameter of the through hole 12 of the base 10, ensuring that the sphere can slide smoothly along the axial direction of the through hole 12 and avoiding problems such as offset or jamming. The surface of the sphere forms a mating part 41, which is used to form a snap-fit ​​with the snap-fit ​​part 31 of the connector 30. Relying on the arc-shaped surface of the sphere, it can achieve precise fit with the snap-fit ​​part 31. At the same time, under the drive of the rotating seat 20, the sphere can move along the axial direction of the through hole 12, thereby extending into the connecting cavity 11 to engage with the snap-fit ​​part 31 to achieve locking, or exiting the connecting cavity 11 to release the engagement and achieve loosening.

[0042] In this embodiment, the locking member 40 is designed as a spherical structure, which is simple and reasonable. The diameter of the sphere is adapted to the inner diameter of the through hole 12, which can ensure the smooth sliding of the sphere along the axial direction of the through hole 12, reduce frictional loss during the sliding process, and extend the service life of the component. The surface of the sphere serves as the mating part 41, and its arc-shaped structure can form a tight snap-fit ​​with the snap-fit ​​part 31, effectively dispersing the locking force and the combined load during use, avoiding local stress concentration, and improving the load-bearing safety and stability of the connection structure. The arc-shaped surface of the sphere facilitates quick alignment, engagement and separation with the snap-fit ​​part 31, adapting to the driving action of the rotating seat 20, and can realize the quick locking and unlocking of the connector 30 and the base 10.

[0043] Please continue to refer to this. Figure 2 In some embodiments, the cavity wall of the connecting cavity is provided with a limiting part 13 along the axial direction, and the outer side wall of the connector is provided with a positioning part 32. The limiting part 13 and the positioning part 32 are mutually limited and cooperated along the axial direction, which can restrict the connector from rotating circumferentially relative to the base, and at the same time provide positioning guidance for the assembly of the connector, so that the connector can be quickly aligned with the assembly position when it is installed in the connecting cavity, which facilitates the subsequent locking part and the snap-fit ​​part to achieve precise snap-fit.

[0044] Among them, one of the limiting part 13 and the positioning part 32 is a convex ridge structure extending along the axial direction, and the other is a groove structure extending along the axial direction. The convex ridge structure and the groove structure fit together and can play a guiding and positioning role during assembly, and can also restrict the circumferential relative rotation between the connector and the base, thereby improving the stability of the connection and fit.

[0045] In some embodiments, a plurality of locking members 40 are provided, and the plurality of locking members 40 are evenly spaced along the circumference of the base 10; Multiple through holes 12 are provided, and each through hole 12 corresponds to a multiple locking element 40. Each through hole 12 penetrates the side wall of the base 10 and communicates with the connecting cavity 11. Multiple tracks 21 are provided, and each track 21 corresponds to a multiple locking element 40. Each track 21 extends circumferentially along the rotating seat 20, and the end of each locking element 40 away from the connecting cavity 11 is slidably disposed in a track 21.

[0046] In this embodiment, multiple locking members 40 are provided and are evenly distributed along the circumference of the base 10. Each locking member 40 is adapted to the corresponding through hole 12 and track 21. It can slide along the corresponding track 21 under the drive of the rotating seat 20, and then extend into or out of the connecting cavity 11 through the corresponding through hole 12 to form a snap-fit ​​or release fit with the snap-fit ​​part 31 of the connector 30. Multiple locking members 40 work together to improve the stability and reliability of locking and ensure that the connecting structure can bear the load evenly.

[0047] The base 10 provides a mounting and support foundation for multiple locking elements 40, rails 21 and rotating seats 20. Multiple through holes 12 are radially arranged on its cavity wall, and each through hole 12 corresponds to a locking element 40. Each through hole 12 penetrates the side wall of the base 10 and communicates with the connecting cavity 11. This provides precise sliding guidance for the corresponding locking element 40, restricts the radial offset of the locking element 40, and ensures that each locking element 40 can smoothly extend into or exit the connecting cavity 11, providing the basic conditions for the coordinated engagement of multiple locking elements 40 and connecting elements 30.

[0048] The rotating seat 20 is sleeved on the outside of the base 10. Multiple tracks 21 are provided on the side facing the base 10. Each track 21 corresponds to a lock member 40. Each track 21 extends circumferentially along the rotating seat 20 to accommodate the end of the corresponding lock member 40 away from the connecting cavity 11. When the rotating seat 20 rotates circumferentially relative to the base 10, the multiple tracks 21 synchronously generate radial guiding and driving forces on the corresponding lock member 40, causing the multiple lock members 40 to move radially synchronously, ensuring that the multiple lock members 40 move in a coordinated manner, and ensuring the smoothness and synchronicity of locking and unlocking actions.

[0049] The connector 30 is provided with a snap-fit ​​part 31 that is adapted to multiple locking parts 40. It is used to form a cooperative snap-fit ​​engagement with multiple locking parts 40. When multiple locking parts 40 are simultaneously inserted into the connecting cavity 11, the connector 30 and the base 10 are locked and fixed in all directions through the engagement of the snap-fit ​​part 31 with the multiple locking parts 40. It bears the uniform locking force transmitted by multiple locking parts 40, avoids the connector 30 from shifting or moving, ensures the stability of the connecting structure, and reliably transmits the composite load during limb movement.

[0050] For example, three locking elements 40 may be provided, which are evenly distributed around the circumference of the base 10. Correspondingly, three through holes 12 and three tracks 21 are also provided. The three through holes 12 correspond one-to-one with the three locking elements 40, and the three tracks 21 also correspond one-to-one with the three locking elements 40. The end of each locking element 40 away from the connecting cavity 11 is slidably disposed in a track 21. When the rotating seat 20 rotates relative to the base 10, the three tracks 21 synchronously drive the corresponding locking element 40 to move radially. The three locking elements 40 synchronously extend into or out of the connecting cavity 11 through the corresponding through holes 12, and cooperate with the snap-fit ​​part 31 of the connector 30 to form a snap-fit ​​or release fit. Through the even distribution and synergistic effect of the three locking elements 40, the stability of the connection and the load distribution effect are further improved. This exemplary arrangement is only one feasible form and does not limit the specific number of locking elements 40.

[0051] The structural design of this embodiment, with multiple locking elements 40, through holes 12, and tracks 21 corresponding one-to-one and evenly distributed circumferentially, is reasonable. The multiple locking elements 40 work together to evenly distribute the locking force and the load during use to the corresponding positions of the base 10 and the connector 30, effectively avoiding local stress concentration, reducing component wear, and improving the load-bearing safety and long-term operational stability of the connection structure. The multiple tracks 21 synchronously drive the corresponding locking elements 40 to ensure that the locking elements 40 are displaced synchronously and precisely matched, avoiding jamming, sticking, or loosening caused by uneven force on a single locking element 40, and ensuring smooth and controllable locking and unlocking actions. This structure can achieve all-round locking of the connector 30 and the base 10, further restricting the radial and axial movement of the connector 30, improving connection reliability. At the same time, the corresponding setting of multiple components is adapted to the driving action of the rotating seat 20, which can achieve quick locking and unlocking without the need for special tools, making operation convenient and suitable for independent operation by people with physical disabilities.

[0052] Please continue to refer to this. Figure 4 In some embodiments, the prosthetic joint connection device 100 further includes a stop assembly 50, which includes: Several locking teeth 51 are spaced apart along the circumference of the base 10 on the outer side wall of the base 10; The pawl 52 is movably disposed on the rotating seat 20. The pawl 52 is adapted to the pawl tooth 51, and the pawl 52 can engage or disengage from the pawl tooth 51.

[0053] In this embodiment, the stop component 50 serves as the locking and limiting part 13 of the device, which is used to limit the accidental rotation of the rotating seat 20 relative to the base 10, ensure the stability of the locking part 40 and the connecting part 30 in the engagement, prevent the rotating seat 20 from rotating accidentally due to external impact, vibration and other factors during the use of the prosthesis, and thus prevent the locking part 40 from loosening and ensure the safety of the connection structure.

[0054] The locking teeth 51 are spaced apart along the circumference of the base 10 on the outer side wall of the base 10. As a fixed structure for stop engagement, they are used to form a locking limit with the locking claw 52. By engaging with the locking claw 52, ​​the circumferential rotation of the rotating seat 20 relative to the base 10 is restricted, providing stable positioning support for the rotating seat 20 and ensuring that the rotating seat 20 remains fixed in the locked position, thereby maintaining the locked state of the locking member 40.

[0055] The pawl 52 is movably disposed on the rotating base 20 and is adapted to the pawl 51. By engaging or disengaging from the pawl 51, the stopping component 50 is limited and released from its limit. When the pawl 52 engages with the pawl 51, it restricts the rotation of the rotating base 20 relative to the base 10 and maintains the locked state of the device. When the pawl 52 disengages from the pawl 51, it releases the limit on the rotating base 20 and allows the rotating base 20 to rotate to unlock the locking component 40. The operation is flexible and controllable.

[0056] The stop component 50 in this embodiment has a reasonable structural design. The matching and cooperation of the locking teeth 51 and the locking claws 52 can effectively limit the accidental rotation of the rotating seat 20, and prevent the locking part 40 from loosening due to external forces, vibrations and other factors. This further improves the safety and stability of the device connection and ensures that the prosthesis will not have the safety hazard of accidental unlocking during daily use. The locking claws 52 are movable and flexible in operation. They can quickly engage or disengage with the locking teeth 51 without affecting the normal locking and unlocking process of the device, and are suitable for independent operation by people with limb disabilities. The locking teeth 51 are distributed circumferentially along the base 10, which can limit and fix the rotating seat 20 in multiple positions, improving the adaptability and flexibility of the device.

[0057] As one embodiment, the locking teeth 51 can be configured as ratchet teeth, which are spaced apart along the circumference of the base 10 on the outer side wall of the base 10. The tooth structure is adapted to the locking claw 52, ​​and can form a one-way locking limit with the locking claw 52, ​​further improving the reliability of the locking limit, preventing the rotating seat 20 from rotating in the opposite direction when subjected to external force, better maintaining the locking state of the locking member 40, and ensuring the stable performance of the stop limit function. The ratchet teeth are adapted to the overall functional requirements of the stop component 50 and form a good cooperative relationship with the locking claw 52, ​​the base 10, and the rotating seat 20.

[0058] In some embodiments, the rotating seat 20 is provided with mounting holes 22 that extend through its inner and outer sides. The pawl 52 is rotatably disposed in the mounting holes 22 via a rotating shaft 521. One end of the pawl 52 can abut against or disengage from the pawl tooth 51, and the other end of the pawl 52 is exposed outside the rotating seat 20.

[0059] In this embodiment, the rotating seat 20 serves as the mounting carrier for the chuck 52. It has mounting holes 22 that extend through its inner and outer sides. These mounting holes 22 provide mounting space for the chuck 52 and the rotating shaft 521, while also providing a range of motion for the rotation of the chuck 52. This ensures that the chuck 52 can smoothly engage or disengage from the chuck tooth 51, and provides an extension channel for the exposed end of the chuck 52, facilitating its operation.

[0060] The pawl 52 is rotatably mounted in the mounting hole 22 via the rotating shaft 521. By rotating around the rotating shaft 521, it can abut or disengage from the pawl 51, thereby completing the stop and release of the limit. One end of the pawl 52 can abut or disengage from the pawl 51 to limit or unlock the rotating seat 20, while the other end is exposed outside the rotating seat 20, making it easy for the operator to rotate the pawl 52 and switch the stop function.

[0061] The locking tooth 51 serves as a stop-fitting structure, adapted to the locking claw 52, ​​and is used to receive the abutting action of one end of the locking claw 52. When the locking claw 52 rotates around the rotating shaft 521 to abut against the locking tooth 51, it restricts the rotation of the rotating seat 20 relative to the base 10, maintaining the locked state of the device. When the locking claw 52 rotates in the opposite direction and disengages from the locking tooth 51, it releases the restriction on the rotating seat 20, allowing the rotating seat 20 to rotate normally to achieve unlocking.

[0062] In this embodiment, the rotating base 20 provides a precise assembly space for the pawl 52 and the rotating shaft 521 through the mounting hole 22, ensuring that the components are assembled compactly and have strong adaptability. The pawl 52 is rotatably mounted in the mounting hole 22 through the rotating shaft 521, and its rotation is flexible and smooth, enabling precise engagement or disengagement with the pawl tooth 51, ensuring the reliable implementation of the stop and limit function. One end of the pawl 52 is exposed outside the rotating base 20, making it easy for operators to operate directly without the need for special tools, and is suitable for independent operation by people with limb disabilities. The setting of the rotating shaft 521 provides stable rotational support for the pawl 52, preventing the pawl 52 from shifting or jamming during operation, extending the service life of the components. At the same time, the entire assembly structure is simple and easy to assemble, and has good synergy with the overall structure of the device. It does not affect the normal locking and unlocking process of the device, and can improve the ease of operation and limit reliability of the stop component 50, further ensuring the safety and flexibility of prosthetic use.

[0063] Please continue to refer to this. Figure 4 In some embodiments, the prosthetic joint connection device 100 further includes a control component 60, which includes a button 61. The button 61 is movably disposed in the mounting hole 22. One end of the button 61 is exposed on the outer side wall of the rotating seat 20, and the other end is connected to the claw 52.

[0064] In this embodiment, the control component 60 serves as the control part of the stop component 50, providing convenient control for the movement of the pawl 52. By driving the button 61 to move, the pawl 52 is driven to engage or disengage from the tooth 51, thereby switching the limit and unlock states of the stop component 50, simplifying the operation process, and ensuring the flexibility and controllability of the stop function.

[0065] Button 61 is movably disposed in mounting hole 22 of rotating base 20 for transmitting control force. One end of button 61 is exposed on the outer side wall of rotating base 20 for easy operation by the operator. The other end is connected to pawl 52 and can drive pawl 52 to move synchronously through its own movement, thereby realizing the switching of the engagement state between pawl 52 and pawl tooth 51.

[0066] The claw 52 is connected to one end of the button 61, and its movement is driven by the button 61. Under the action of the button 61, it can abut or disengage with the claw 51, thereby completing the stop limit and release limit. When the button 61 moves, the claw 52 moves synchronously with the button 61 to ensure that the engagement state with the claw 51 can be quickly switched, maintaining the stability of the device's locked state or realizing the unlocking operation.

[0067] In this embodiment, the button 61 is movably disposed in the mounting hole 22, moving smoothly and with a precise trajectory, and can stably drive the claw 52 to move; one end of the button 61 is exposed on the rotating seat 20, making it easy to operate without the need for special tools, and is suitable for people with physical disabilities to operate independently, effectively improving the ease of use of the device.

[0068] In some embodiments, the control component 60 further includes an elastic element 62 connected to the button 61, the elastic element 62 being used to provide the button 61 with an action toward the outside of the rotating seat 20.

[0069] In this embodiment, the elastic element 62 is connected to the button 61, providing a force to the button 61 toward the outside of the rotating seat 20, providing a reset support for the button 61, ensuring that the button 61 can return to its initial position under the action of the elastic element 62 when not operated by external force, thereby driving the claw 52 to maintain the contact state with the tooth 51, maintaining the limiting function of the stop component 50, and preventing the claw 52 from disengaging from the tooth 51 and the stop from failing due to the button 61 becoming loose.

[0070] The specific type of elastic element 62 can be flexibly selected according to actual assembly requirements. Common elastic structures such as springs, sheet springs, and rubber parts can be selected. All of the above elastic structures can stably provide a force to the button 61 toward the outside of the rotating seat 20, realizing the reset function of the button 61. Moreover, the structure is simple, the assembly is convenient, and it is compatible with the overall structure of the control component 60. These examples are only feasible forms and are not limited thereto. All elastic structures that can meet the force requirements and realize the reset function are within the protection scope of this application.

[0071] This embodiment effectively improves the reliability of the control component 60 and the stop component 50 by setting the elastic element 62. The force it provides to the button 61 towards the outside of the rotating seat 20 can ensure that the button 61 automatically resets, thereby driving the claw 52 to maintain a stable contact with the tooth 51, avoiding the claw 52 from disengaging or failing to stop due to accidental contact, vibration or other factors, and ensuring the safety of the prosthesis.

[0072] Please refer to Figure 5In some embodiments, the mounting hole 22 includes a first hole segment 221 and a second hole segment 222 that are connected. The first hole segment 221 is located on the side of the rotating seat 20 near the base 10, and the diameter of the first hole segment 221 is smaller than the diameter of the second hole segment 222. A stepped surface 223 is formed between the first hole segment 221 and the second hole segment 222. The button 61 includes a main body 611 and a pressing part 612 connected to each other. The main body 611 is slidably inserted into the mounting hole 22, the pressing part 612 is located outside the rotating seat 20, and the end of the main body 611 away from the pressing part 612 is located inside the rotating seat 20 and abuts against the claw 52.

[0073] In this embodiment, the first hole segment 221 is located on the side of the rotating seat 20 near the base 10, and its diameter is smaller than that of the second hole segment 222. It plays a precise guiding role for the main body 611 of the button 61, restricts the radial offset of the main body 611, and ensures that the movement trajectory of the button 61 is accurate. At the same time, it cooperates with the second hole segment 222 to form a stepped surface 223, which provides axial limit for the button 61 and prevents the button 61 from moving excessively inward to the rotating seat 20 and disengaging from the mounting hole 22.

[0074] The second hole segment 222 is located on the side of the rotating seat 20 away from the base 10. Its diameter is larger than that of the first hole segment 221. It accommodates the corresponding part of the main body 611 of the button 61, providing sufficient space for the movement of the button 61. At the same time, it adapts to the assembly requirements of the button 61, ensuring that the button 61 can be smoothly inserted and slide. Together with the first hole segment 221, it ensures the stability of the button 61's installation and operation.

[0075] The stepped surface 223 is formed between the first hole section 221 and the second hole section 222, which serves to limit the axial movement of the button 61, preventing the button 61 from moving excessively into the rotating seat 20, thus avoiding the failure of the button 61 to cooperate with the pawl 52 due to excessive movement. At the same time, it provides a limit reference for the reset action of the button 61, ensuring that the button 61 can remain in the preset position after reset.

[0076] The button 61 consists of a main body 611 and a pressing part 612 connected to each other. It is used to transmit control force, drive the claw 52 to abut or disengage from the tooth 51, and switch the limit and unlock states of the stop component 50, providing the operator with a convenient control carrier.

[0077] Specifically, the main body 611 is slidably inserted into the mounting hole 22. The end of the main body away from the pressing part 612 is located in the rotating seat 20 and abuts against the claw 52, ​​transmitting the operating force received by the pressing part 612. It drives the claw 52 to move by sliding itself, and at the same time adapts to the structure of the mounting hole 22. Under the guidance of the first hole section 221, it achieves precise movement, ensuring stable and reliable contact with the claw 52.

[0078] The pressing part 612 is located outside the rotating base 20, providing control contacts for the operator. It is convenient for the operator to directly touch and press, and transmit the control force to the main body 611 to control the movement of the claw 52. It is easy to operate and easy to apply force.

[0079] The difference in aperture between the first hole segment 221 and the second hole segment 222, as well as the setting of the stepped surface 223 in this embodiment, can not only provide precise guidance for the button 61 and prevent the button 61 from deviating or getting stuck when moving, but also achieve axial limiting to prevent the button 61 from moving excessively and causing failure of the fit, thus ensuring the stability and reliability of the button 61's operation. The main body 611 and the pressing part 612 of the button 61 have a clear division of labor. The main body 611 is adapted to the mounting hole 22 to achieve precise sliding and stable contact with the claw 52. The pressing part 612 is exposed on the rotating seat 20 for easy operation. The operation is convenient and the force is smooth, making it suitable for independent operation by people with limb disabilities.

[0080] In some embodiments, at least two elastic members 62 are provided, one end of the elastic member 62 abuts against the stepped surface 223, and the other end of the elastic member 62 abuts against the pressing part 612.

[0081] In this embodiment, one end of the elastic member 62 abuts against the step surface 223. The step surface 223 provides a stable support reference for the elastic member 62, restricts the axial displacement of the elastic member 62, ensures that the elastic member 62 can stably apply force, and provides room for compression and reset of the elastic member 62, ensuring the normal functioning of the elastic member 62.

[0082] The other end of the elastic element 62 abuts against the pressing part 612, transmitting the elastic force to the pressing part 612, thereby driving the button 61 to achieve a reset action. At the same time, when the button 61 is pressed, the elastic element 62 is squeezed by the pressing part 612 and deforms, storing elastic potential energy. After the external force is removed, the potential energy is released, pushing the button 61 to reset.

[0083] In this embodiment, at least two elastic elements 62 provide a balanced and stable reset force to the button 61, avoiding uneven force or damage to a single elastic element 62 that could cause the button 61 to fail to reset, thus improving the reliability and stability of the button 61's reset. The two ends of the elastic element 62 abut against the stepped surface 223 and the pressing part 612 respectively, ensuring stable assembly and direct force transmission, enabling the button 61 to reset quickly and ensuring the continuity of operation.

[0084] Please continue to refer to this. Figure 5 In some embodiments, the pawl 52 includes an abutting end 522, a free end 523, and a rotating part 524 located between the abutting end 522 and the free end 523. The rotating part 524 is rotatably connected to the rotating seat 20. The abutting end 522 abuts and engages with the main body 611. The free end 523 can mesh with the pawl tooth 51.

[0085] In this embodiment, the abutting end 522 serves as the mating part 41 between the claw 52 and the main body 611 of the button 61. It abuts and engages with the main body 611 of the button 61 to receive the control force transmitted by the button 61. When the button 61 moves, the abutting action pushes the claw 52 to rotate around the rotating part 524, thereby driving the action of the claw 52 and ensuring that the control force of the button 61 can be accurately transmitted to the claw 52.

[0086] The free end 523 serves as the mating part 41 between the pawl 52 and the tooth 51, and can engage or disengage with the tooth 51. When the pawl 52 rotates under the drive of the button 61, the free end 523 can engage with the tooth 51 to restrict the rotation of the rotating seat 20 relative to the base 10, thereby achieving a stop limit. When the pawl 52 rotates in the opposite direction, the free end 523 disengages from the tooth 51, releasing the limit and allowing the rotating seat 20 to rotate normally.

[0087] The rotating part 524 is located between the abutting end 522 and the free end 523 and is rotatably connected to the rotating seat 20. It provides support and a rotation axis for the rotation of the pawl 52, ensuring that the pawl 52 can rotate flexibly and smoothly around the rotating part 524. It ensures that the actions of the abutting end 522 and the free end 523 are synchronized and the trajectory is accurate, avoiding deviation or jamming when the pawl 52 rotates.

[0088] In this embodiment, the functions of the abutting end 522, the free end 523, and the rotating part 524 are clearly defined. The rotational connection between the rotating part 524 and the rotating seat 20 ensures that the pawl 52 rotates flexibly and smoothly, avoiding deviation or jamming, and ensuring the accuracy of the pawl 52's action. The abutting end 522 and the main body 611 of the button 61 abutting and cooperating can realize the precise transmission of control force, driving the free end 523 and the pawl 51 to smoothly engage or disengage, ensuring reliable switching between stop limit and unlocking actions.

[0089] In some embodiments, the main body 611 extends axially along the mounting hole 22 into a limiting groove 6111, and the rotating shaft 521 is located within the limiting groove 6111; and / or, The abutting end 522 is an arc-shaped groove 5221, and the main body 611 is provided with an arc-shaped protrusion 6112 that matches the arc-shaped groove 5221.

[0090] In this embodiment, the limiting groove 6111 extends axially along the main body 611 to accommodate the rotating shaft 521 and limit its movement. This restricts the relative displacement between the rotating shaft 521 and the main body 611, ensuring that the rotating shaft 521 remains within the limiting groove 6111 when the main body 611 slides axially along the mounting hole 22. This prevents the main body 611 from shifting or jamming during sliding, ensuring the coordinated operation of the main body 611 and the rotating part 524 of the claw 52, ​​and ensuring the accurate rotation trajectory of the claw 52.

[0091] The rotating shaft 521 is located in the limiting groove 6111. It works with the limiting groove 6111 to guide and limit the main body 611. At the same time, it serves as a rotation support for the rotating part 524 of the pawl 52. This ensures that when the main body 611 slides, the rotating shaft 521 can stably drive the pawl 52 to rotate around the rotating part 524, preventing the pawl 52 from failing to move due to the offset of the main body 611 and ensuring the stability of the control force transmission.

[0092] The abutment end 522 is set as an arc-shaped groove 5221, which serves as the mating part 41 between the pawl 52 and the main body 611. It fits and conforms to the arc-shaped protrusion 6112 of the main body 611, increasing the contact area between the two and ensuring that the control force transmitted by the main body 611 can be transmitted evenly and stably to the pawl 52. This avoids loosening or wear caused by local force concentration and guides the movement trajectory of the main body 611, ensuring smooth rotation of the pawl 52.

[0093] An arc-shaped protrusion 6112 is provided on the main body 611 and is adapted to the arc-shaped groove 5221 of the abutment end 522. It forms a tight fit with the arc-shaped groove 5221 to ensure stable fit between the main body 611 and the abutment end 522 of the claw 52, ​​and to prevent the main body 611 from slipping off the abutment end 522 when it moves. At the same time, it optimizes the transmission path of the control force, so that the axial force of the main body 611 can be efficiently converted into the rotational force of the claw 52, ​​and improves the response speed of the claw 52.

[0094] In this embodiment, the fit between the limiting groove 6111 of the main body 611 and the rotating shaft 521, and the fit between the arc-shaped groove 5221 of the abutment end 522 and the arc-shaped protrusion 6112 of the main body 611, are two structures that can be used individually or in combination. The design is reasonable and highly adaptable. The fit between the limiting groove 6111 and the rotating shaft 521 can effectively limit the relative displacement between the main body 611 and the rotating shaft 521, avoid the main body 611 from deviating or getting stuck when sliding, and ensure the precise rotation trajectory of the pawl 52. The fit between the arc-shaped groove 5221 and the arc-shaped protrusion 6112 increases the contact area, disperses the force, avoids loose fit and local wear, and improves the stability and efficiency of the control force transmission.

[0095] This application also provides a prosthesis, including a prosthesis socket, a prosthesis joint component, and a prosthesis joint connecting device 100 as described above. The base 10 of the prosthesis joint connecting device 100 is connected to the prosthesis socket, and the connector 30 of the prosthesis joint connecting device 100 is connected to the prosthesis joint component. Since the prosthesis adopts all the technical solutions of all the embodiments of the above-described prosthesis joint connecting device 100, the prosthesis of this application embodiment also has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0096] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A prosthetic joint connection device, characterized in that, include: A base, one end of which is configured with an open connecting cavity, the cavity wall of which is provided with a through hole in the radial direction; A rotating seat, which is sleeved on the outside of the base and is rotatable relative to the base; A connector, one end of which can enter the connecting cavity through the open end of the connecting cavity, and the connector is provided with a snap-fit ​​part; A locking element is provided between the base and the rotating seat. The locking element has a mating part. The mating part can extend into the connecting cavity through the through hole and engage with the snap-fit ​​part under the rotation drive of the rotating seat, or exit the connecting cavity to release the snap-fit ​​engagement with the snap-fit ​​part.

2. The prosthetic joint connection device according to claim 1, characterized in that, The rotating seat has a track on the side facing the base. The track extends circumferentially along the rotating seat, and the inner diameter of the track gradually decreases or increases along the rotation direction of the rotating seat. The locking member is slidably disposed within the track at one end away from the connecting cavity. The locking member can slide along the track as the rotating seat rotates to achieve radial displacement of the mating part along the base.

3. The prosthetic joint connection device according to claim 2, characterized in that, The snap-fit ​​portion is a groove on the outer side wall of the connector, and the mating portion is a protrusion on one end of the locking member. The protrusion can be embedded in the groove to form a snap-fit ​​engagement.

4. The prosthetic joint connection device according to claim 1, characterized in that, The locking element is a spherical structure, the diameter of which is adapted to the inner diameter of the through hole, and the surface of the sphere forms the mating part. The sphere can slide along the axial direction of the through hole under the drive of the rotating seat to extend into or exit the connecting cavity.

5. The prosthetic joint connection device according to any one of claims 2 to 4, characterized in that, The locking element is provided in multiple parts, and the multiple locking elements are evenly spaced along the circumference of the base; The through holes are provided in multiple ways, and each of the through holes corresponds to one of the locking elements. Each through hole penetrates the side wall of the base and communicates with the connecting cavity. The track is provided in multiple ways, and each track corresponds to a locking element. Each track extends circumferentially along the rotating seat, and the end of each locking element away from the connecting cavity is slidably disposed in one of the tracks.

6. The prosthetic joint connection device according to any one of claims 1 to 4, characterized in that, The prosthetic joint connection device further includes a stop component, the stop component comprising: Several locking teeth are spaced apart along the circumference of the base on the outer side wall of the base; A chuck is movably disposed on the rotating seat, the chuck is adapted to the chuck tooth, and the chuck can engage or disengage from the chuck tooth.

7. The prosthetic joint connection device according to claim 6, characterized in that, The rotating base is provided with mounting holes that extend through its inner and outer sides. The pawl is rotatably mounted in the mounting holes via a rotating shaft. One end of the pawl can abut against or disengage from the pawl teeth, and the other end of the pawl is exposed outside the rotating base.

8. The prosthetic joint connection device according to claim 7, characterized in that, The prosthetic joint connection device further includes a control component, which includes a button movably disposed in the mounting hole. One end of the button is exposed on the outer side wall of the rotating seat, and the other end is connected to the pawl.

9. The prosthetic joint connection device according to claim 8, characterized in that, The control component also includes an elastic element connected to the button, the elastic element being used to direct the button toward the outside of the rotating seat.

10. A prosthesis, characterized in that, It includes a prosthesis socket, a prosthesis joint component, and a prosthesis joint connection device as described in any one of claims 1 to 9, wherein the base of the prosthesis joint connection device is connected to the prosthesis socket, and the connector of the prosthesis joint connection device is connected to the prosthesis joint component.

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