Prosthetic static alignment device

Abstract

This utility model relates to the field of bionic prosthesis technology and discloses a static alignment device for a prosthesis, including an adjustment box fixedly mounted on the damping cylinder of the prosthesis; a heat dissipation cylinder fixedly mounted on the adjustment box and sleeved on the damping cylinder of the prosthesis; an airflow channel and an air blowing hole are formed on the cylinder body of the heat dissipation cylinder, and the air blowing hole is connected to the airflow channel; an airflow generating mechanism for generating airflow is installed on the heat dissipation cylinder, the airflow generating mechanism cooperates with the airflow channel, and the airflow generating mechanism is drivenly connected to the piston rod of the damping cylinder. During static alignment of the prosthesis, the piston rod of the damping cylinder extends and retracts during the adjustment process, driving the airflow generating mechanism to generate airflow. The airflow is blown out through the airflow channel and the air blowing hole, achieving heat dissipation while cleaning the prosthesis, ensuring the performance of the damping cylinder without requiring manual cleaning of the prosthesis, thus improving adjustment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of prosthetic bionics technology, and in particular to a static alignment device for prostheses. Background Technology

[0002] Static alignment of the prosthesis is a crucial step in the prosthesis fitting process. It involves precise calibration and adjustment of the prosthesis using a specialized workbench during fabrication and assembly to ensure it aligns with the body's biomechanical alignment, thereby achieving optimal walking performance and comfort. This precise calibration and adjustment includes adjusting the damping hydraulic cylinders within the prosthesis. Currently, most industry institutions employ constant friction adjustment for resistance and pneumatic cylinder bidirectional resistance adjustment for the knee joint. This allows for the regulation of gait during movement, including knee extension and flexion resistance, and resistance during the weight-bearing transition period, thus compensating for regenerative function in disabled individuals.

[0003] The needle valve type dual-oil-circuit coupled adjustable damping cylinder for an intelligent knee prosthesis, as described in announcement number CN113446346A, includes a cylinder section, a flow regulation module, and a motor fixing module. The cylinder section includes a cylinder body, a cylinder head, an end cap, a piston assembly, and an extension spring. The cylinder head is connected to the upper end of the cylinder body, and the end cap is located inside the cylinder body and positioned below the cylinder head. The piston assembly passes through the cylinder head and the end cap. The extension spring is placed inside the cylinder body and connected to the bottom end of the piston assembly. Four oil holes are provided at the upper and lower ends of the side wall of the cylinder body, forming two hydraulic oil channels. The flow regulation module includes an external oil passage seat connected to the cylinder body, and extension oil passage needle valve bodies and flexion oil passage needle valve bodies disposed inside the external oil passage seat. A flexion... The system includes an oil passage groove, an extension oil passage groove, and an energy storage chamber; a bendable oil passage needle valve body is installed within the bendable oil passage groove, and an extension oil passage needle valve body is installed within the extension oil passage groove; a hydraulic oil passage at a certain angle is provided on the side of the external oil circuit seat that connects to the cylinder body, which is connected to two hydraulic oil passages of the cylinder body to form a bendable hydraulic oil passage and an extension hydraulic oil passage, respectively; the bendable oil passage groove is connected to the bendable hydraulic oil passage, and the extension oil passage groove is connected to the extension hydraulic oil passage; the motor fixing module includes: a motor fixing seat fixed on the external oil circuit seat, a linear motor fixed on the motor fixing seat, and a valve body connector connected to the output end of the linear motor; the valve body connector connects the extension oil passage needle valve body and the bendable oil passage needle valve body.

[0004] Based on the above technical features, the problem is that in the existing technology, the damping cylinder is prone to overheating when undergoing relatively intense motion adjustments. Excessive overheating of the damping cylinder can easily lead to a decrease in its performance. Furthermore, during the adjustment process, the cylinder body is prone to getting dirty, dusty, or mixed with debris, requiring manual cleaning of the prosthesis and reducing adjustment efficiency.

[0005] Therefore, it is necessary to solve the above problems by means of a static alignment device for prostheses. Utility Model Content

[0006] The purpose of this invention is to provide a static alignment device for prostheses to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a static alignment device for a prosthesis, comprising an adjustment box, the adjustment box being fixedly installed on the damping cylinder of the prosthesis; a heat dissipation cylinder being fixedly installed on the adjustment box, the heat dissipation cylinder being fixedly sleeved on the damping cylinder of the prosthesis; an airflow channel and an air blowing hole being opened on the cylinder body of the heat dissipation cylinder, the air blowing hole being connected to the airflow channel; an airflow generating mechanism for generating airflow being installed on the heat dissipation cylinder, the airflow generating mechanism cooperating with the airflow channel, and the airflow generating mechanism being drivenly connected to the piston rod of the damping cylinder.

[0008] Preferably, the airflow generating mechanism includes a piston head; a sliding cavity is formed on the body of the heat dissipation cylinder, and the sliding cavity is connected to the airflow channel; the piston head is slidably installed in the sliding cavity, and a sliding rod is fixedly connected to the piston head; a connecting ring is fixedly sleeved on the piston rod of the damping cylinder, and the sliding rod is fixedly connected to the connecting ring.

[0009] Preferably, the heat dissipation cylinder has a vent hole on its body, and the vent hole is connected to the sliding cavity.

[0010] Preferably, the slide rod extends out of the heat sink cylinder and is in a limiting sliding engagement with the heat sink cylinder.

[0011] Preferably, the heat sink is made of a thermally conductive material.

[0012] Preferably, a second connecting seat is fixedly provided at the tail end of the damping cylinder body, and a first connecting seat is fixedly provided at the head position of the piston rod of the damping cylinder.

[0013] The technical effects and advantages of this utility model are as follows: When performing static alignment of the prosthesis, the piston rod of the damping cylinder extends and retracts during the adjustment process. The piston rod drives the airflow generation mechanism to generate airflow. The airflow is blown out through the airflow channel and the blowing hole, which not only dissipates heat but also cleans the prosthesis. This ensures the performance of the damping cylinder without the need for manual cleaning of the prosthesis, thus improving the adjustment efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the heat dissipation cylinder of this utility model;

[0016] Figure 3 This is a schematic diagram of the airflow channel of this utility model;

[0017] Figure 4 This is a schematic diagram of the airflow generation mechanism of this utility model;

[0018] Figure 5 This is a schematic diagram of the damping cylinder of this utility model;

[0019] Figure 6 This is a side view of the damping cylinder of this utility model.

[0020] In the diagram: 1. Damping cylinder; 2. First connecting seat; 3. Second connecting seat; 4. Adjusting box; 5. Adjusting valve; 6. Radiator; 7. Connecting ring; 8. Slide rod; 9. Piston head; 10. Slide cavity; 11. Airflow channel; 12. Air blowing hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides, for example Figures 1 to 4 The illustrated static alignment device for a prosthesis includes an adjustment box 4, which is fixedly mounted on the damping cylinder 1 of the prosthesis. Two adjusting valves 5 are installed on the adjustment box 4. These valves 5 use an oil medium as mechanical resistance and are used to adjust the sliding resistance of the piston within the damping cylinder 1. One adjusting valve 5 corresponds to the knee extension resistance, and the other corresponds to the knee flexion resistance.

[0023] Specifically, the sliding resistance of the piston inside the damping cylinder 1 is determined by the flow resistance of the oil inside the damping cylinder 1, which is determined by two regulating valves 5. This technology is existing technology and will not be elaborated upon here.

[0024] A heat sink 6, made of thermally conductive material, is fixedly mounted on the regulating box 4. The heat sink 6 is fixedly fitted onto the damping cylinder 1 of the prosthesis. Airflow channels 11, multiple air holes 12, and multiple heat dissipation holes are formed on the cylinder body of the heat sink 6. All air holes 12 communicate with the airflow channels 11 and are evenly distributed on the heat sink 6. The heat dissipation holes are evenly distributed along the circumference of the damping cylinder 1.

[0025] An airflow generating mechanism for generating airflow is installed on the heat sink 6. The airflow generating mechanism cooperates with the airflow channel 11 and is drivenly connected to the piston rod of the damping cylinder 1.

[0026] Specifically, the airflow generation mechanism includes a piston head 9.

[0027] Several sliding cavities 10 are opened on the cylinder body of the heat sink 6 along the sliding direction of the piston inside the damping cylinder 1. The several sliding cavities 10 are evenly distributed along the circumference of the damping cylinder 1, and each sliding cavity 10 is connected to the airflow channel 11.

[0028] A piston head 9 is slidably installed in each slide cavity 10, and a slide rod 8 is fixedly installed on each piston head 9. A connecting ring 7 is fixedly sleeved on the piston rod of the damping cylinder 1, and the end of each slide rod 8 away from the connected piston head 9 is fixedly connected to the connecting ring 7.

[0029] Each sliding rod 8 extends through the body of the heat dissipation cylinder 6 and is slidably engaged with the body of the heat dissipation cylinder 6. The body of the heat dissipation cylinder 6 is provided with ventilation holes. The rod-side chamber of each sliding cavity 10 is connected to several ventilation holes, and the rodless chamber of each sliding cavity 10 is connected to the airflow channel 11.

[0030] A second connecting seat 3 is fixedly installed at the tail end of the cylinder body of the damping cylinder 1, and a first connecting seat 2 is fixedly installed at the head position of the piston rod of the damping cylinder 1.

[0031] Working principle: When using this device to perform static alignment of the prosthesis, the sliding resistance of the piston in the damping cylinder 1 is adjusted by two regulating valves 5, thereby adjusting the knee extension and flexion resistance. This is existing technology and will not be elaborated further.

[0032] During the process of simulating human knee flexion, the piston rod of damping cylinder 1 retracts and drives the piston to slide close to the tail of the cylinder body. The knee flexion resistance is determined by the thrust applied to the piston rod.

[0033] When the piston rod retracts into the damping cylinder 1, it moves the connecting ring 7 closer to the damping cylinder 1. The connecting ring 7 pushes the slide rod 8 into the slide cavity 10, and the slide rod 8 drives the piston head 9 to slide along the slide cavity 10 closer to the airflow channel 11. During this process, the air in the rodless chamber of the slide cavity 10 enters the airflow channel 11, and the air in the airflow channel 11 is blown out through the air blowing hole 12. This achieves cleaning and heat dissipation.

[0034] During the simulation of human knee extension, the piston rod of damping cylinder 1 extends and drives the piston to slide away from the tail of the cylinder. The knee extension resistance is determined by the tension applied to the piston rod.

[0035] When the piston rod extends out of the damping cylinder 1, it moves the connecting ring 7 away from the damping cylinder 1. The connecting ring 7 pulls the slide rod 8 out of the slide cavity 10, and the slide rod 8 drives the piston head 9 to slide along the slide cavity 10 towards the vent. During this process, hot air around the damping cylinder 1 is drawn into the airflow channel 11 through the air blowing hole 12, and the air in the airflow channel 11 enters the slide cavity 10. The heat of the hot air in the slide cavity 10 and the airflow channel 11 is dissipated through the heat dissipation cylinder 6. This increases the contact area between the hot air and the heat dissipation cylinder 6, accelerating heat dissipation.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prosthesis static alignment device, comprising an adjustment box (4) fixedly mounted on a damping cylinder (1) of a prosthesis; characterized in that: A heat sink (6) is fixedly installed on the regulating box (4), and the heat sink (6) is fixedly sleeved on the damping cylinder (1) of the prosthesis; an airflow channel (11) and an air blowing hole (12) are opened on the body of the heat sink (6), and the air blowing hole (12) is connected to the airflow channel (11); an airflow generating mechanism for generating airflow is installed on the heat sink (6), the airflow generating mechanism is cooperated with the airflow channel (11), and the airflow generating mechanism is connected to the piston rod of the damping cylinder (1) in a driving connection.

2. A prosthesis alignment device as claimed in claim 1, wherein: The airflow generating mechanism includes a piston head (9); a sliding cavity (10) is opened on the body of the heat dissipation cylinder (6), and the sliding cavity (10) is connected to the airflow channel (11); the piston head (9) is slidably installed in the sliding cavity (10), and a sliding rod (8) is fixedly connected to the piston head (9); a connecting ring (7) is fixedly sleeved on the piston rod of the damping cylinder (1), and the sliding rod (8) is fixedly connected to the connecting ring (7).

3. The static alignment device for a prosthesis according to claim 2, characterized in that: The heat dissipation cylinder (6) has a vent hole on its body, and the vent hole is connected to the sliding cavity (10).

4. The static alignment device for a prosthesis according to claim 2, characterized in that: The slide bar (8) extends out of the body of the heat sink (6) and is in a limiting sliding fit with the body of the heat sink (6).

5. A static alignment device for a prosthesis according to claim 1, characterized in that: The heat sink (6) is made of thermally conductive material.

6. The static alignment device for a prosthesis according to claim 1, characterized in that: The second connecting seat (3) is fixedly installed at the tail of the cylinder body of the damping cylinder (1), and the first connecting seat (2) is fixedly installed at the head of the piston rod of the damping cylinder (1).

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