A prosthesis socket device, a prosthesis, and a negative pressure adjustment method.

Abstract

This invention relates to a prosthetic socket device, a prosthesis, and a negative pressure adjustment method. The prosthetic socket device includes a receiving shell and an adjustment and fixing device. The receiving shell has a receiving cavity with one open end. One end of the receiving shell is detachably connected to the adjustment and fixing device, and the other end is connected to a mounting part for mounting and fixing the prosthesis body. The adjustment and fixing device has an adjustment and fixing cavity that can be adjusted and positioned according to the size of the residual limb. The adjustment and fixing cavity communicates with the receiving cavity through the opening, allowing the residual limb to pass through the adjustment and fixing cavity and extend into the receiving cavity for fixation. The prosthetic socket device, prosthesis, and negative pressure adjustment method provided by this invention solve the problems of high cost and poor applicability of existing prosthetic sockets.

Description

Technical Field

[0001] This invention relates to the field of prosthetic device technology, and in particular to a prosthetic socket device, a prosthesis, and a negative pressure adjustment method. Background Technology

[0002] The prosthetic socket is a crucial structural component of a prosthesis, serving to connect and control the prosthesis, accommodate the residual limb, and ensure a certain level of comfort. To better adapt to different individuals and residual limb conditions, current prosthetic sockets are mostly custom-made based on individual needs and residual limb characteristics. This involves manual or computer-aided design, a complex and time-consuming manufacturing process, resulting in higher prices and making them less suitable for various usage scenarios. Summary of the Invention

[0003] The main objective of this invention is to propose a prosthesis socket device, a prosthesis, and a negative pressure adjustment method, aiming to solve the problems of high cost and poor applicability of existing prosthesis sockets.

[0004] To achieve the above objectives, the present invention provides a prosthesis socket device, comprising a receiving shell and an adjustment and fixing device. The receiving shell has a receiving cavity with one end open. One end of the receiving shell is detachably connected to the adjustment and fixing device, and the other end is connected to a mounting part for mounting and fixing the prosthesis body. The adjustment and fixing device has an adjustment and fixing cavity that can be adjusted and positioned according to the size of the residual limb. The adjustment and fixing cavity communicates with the receiving cavity through the opening, so that the residual limb passes through the adjustment and fixing cavity and extends into the receiving cavity for fixing.

[0005] According to some embodiments of the present invention, the adjusting and fixing device includes a fixing part movably disposed on the inner wall of the adjusting and fixing cavity, and a positioning wall is formed at one end of the fixing part facing the adjusting and fixing cavity to fit and restrict the movement of the residual limb relative to the adjusting and fixing device.

[0006] According to some embodiments of the present invention, the adjusting and fixing device includes a fixing housing and an adjusting assembly. The fixing housing is provided with the adjusting and fixing cavity. The sidewall of the fixing housing is provided with guide holes and adjusting holes spaced apart circumferentially. The adjusting assembly includes the fixing part, the guide part, and the adjusting part. The fixing part is movably disposed along the radial direction of the fixing housing. One end of the guide part is connected to the fixing part, and the other end is movably disposed in the guide hole. An elastic element is wound around the guide part, and one end of the elastic element is connected to the fixing part, and the other end is connected to the inner wall of the fixing housing. The adjusting part is threadedly connected to the fixing housing, and one end passes through the adjusting hole and abuts against the fixing part.

[0007] According to some embodiments of the present invention, the receiving housing is further provided with an installation cavity, the installation cavity and the receiving cavity are connected through an air extraction hole, the prosthesis receiving cavity device further includes a negative pressure component disposed in the installation cavity, the negative pressure component includes a negative pressure generating part, the negative pressure generating part is connected to the air extraction hole through an air extraction pipe, and the installation cavity is provided with an exhaust hole communicating with the outside.

[0008] According to some embodiments of the present invention, a sealing and fixing device is further included, which is connected to the adjusting and fixing device. The sealing and fixing device includes a sealing portion that can be radially contracted to fit and fix the residual limb. The sealing portion has a sealing and fixing cavity, which communicates with the receiving cavity through the adjusting and fixing cavity, so that the residual limb passes through the sealing and fixing cavity and the adjusting and fixing cavity in sequence and extends into and is fixed in the receiving cavity.

[0009] According to some embodiments of the present invention, a motion detection device for detecting the user's motion state is further included. The motion detection device is disposed within the receiving housing. The motion detection device includes a guide structure and a magnetic part. The guide structure has a movable cavity. The magnetic part is slidably disposed within the movable cavity. A coil is wound on the guide structure. The coil is located in the magnetic field of the magnetic part.

[0010] In addition, to achieve the above objectives, the present invention also provides a prosthesis, including a prosthesis body and a prosthesis receiving cavity device as described in any of the above claims, wherein the prosthesis body is connected to the mounting portion.

[0011] In addition, to achieve the above objectives, the present invention also provides a negative pressure adjustment method. The prosthesis socket device includes a receiving shell, the receiving shell having a receiving cavity for inserting and fixing a prosthesis. The prosthesis socket device also includes a motion detection device, a controller, and a negative pressure generating part for adjusting the negative pressure in the receiving cavity. The negative pressure generating part and the motion detection device are both disposed in the receiving shell and are both electrically connected to the controller.

[0012] The negative pressure regulation method includes the following steps:

[0013] The parameters detected by the motion detection device are obtained and the user's motion state is determined.

[0014] The adjustment strategy for the negative pressure inside the receiving cavity is determined based on the motion state.

[0015] According to some embodiments of the present invention, the adjustment strategy for determining the intracavitary negative pressure based on the motion state includes:

[0016] When the user is in a state of strenuous exercise, the negative pressure generating unit is controlled to operate to increase the negative pressure in the receiving cavity;

[0017] When the user is in a state of gentle movement, the negative pressure generating unit is controlled to stop operating in order to maintain the negative pressure in the receiving cavity.

[0018] According to some embodiments of the present invention, the motion detection device includes a guide structure and a magnetic part, the guide structure having a movable cavity, the magnetic part being slidably disposed within the movable cavity, and a coil being wound on the guide structure, the coil being situated in the magnetic field of the magnetic part;

[0019] The step of acquiring the parameters detected by the motion detection device and determining the user's motion state includes:

[0020] Obtain the preset value of the induced electromotive force;

[0021] Obtain the current induced electromotive force within the coil;

[0022] Compare the current induced electromotive force with the preset value;

[0023] When the current induced electromotive force is greater than the preset value, it is determined that the user is in a state of vigorous exercise;

[0024] When the current induced electromotive force is less than the preset value, it is determined that the user is in a state of gentle movement.

[0025] The present invention has at least the following beneficial effects:

[0026] In this invention, the receiving housing has a receiving cavity with one open end. One end of the receiving housing is detachably connected to the adjustment and fixing device, and the other end is connected to a mounting part for mounting and fixing the prosthesis body. The adjustment and fixing device has an adjustment and fixing cavity that can be adjusted and positioned according to the size of the residual limb. The adjustment and fixing cavity communicates with the receiving cavity through the opening, allowing the residual limb to pass through the adjustment and fixing cavity and extend into the receiving cavity for fixation. Since the residual limb passes through the adjustment and fixing cavity and extends into and is fixed in the receiving cavity, the residual limb is fixed by the adjustment and fixing cavity that can be adjusted and positioned according to the size of the residual limb. The friction between the adjustment and fixing cavity and the residual limb firmly fixes the residual limb to the prosthesis receiving cavity device. For different users, the adjustment and fixing cavity can be adjusted to fit different sizes of residual limbs. Compared with existing prosthesis receiving cavities that need to be specially customized according to different sizes of residual limbs, this greatly reduces costs and improves applicability. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is an exploded schematic diagram of a prosthetic socket device provided in an embodiment of the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of the internal structure of the receiving housing;

[0030] Figure 3 for Figure 2 A schematic diagram of the internal structure of the motion detection device in the diagram;

[0031] Figure 4 for Figure 1 A three-dimensional structural diagram of the adjustment and fixing device in the middle;

[0032] Figure 5 for Figure 4 A schematic diagram of the structure of the adjustment component in the diagram;

[0033] Figure 6 for Figure 1 A schematic diagram of the sealing and fixing device in the middle;

[0034] Figure 7 for Figure 6 A schematic diagram of the sealing part in the middle;

[0035] Figure 8 This is a flowchart illustrating the first embodiment of the negative pressure regulation method of the present invention;

[0036] Figure 9 This is a flowchart illustrating the second embodiment of the negative pressure regulation method of the present invention;

[0037] Figure 10 This is a flowchart illustrating the third embodiment of the negative pressure regulation method of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100-Prosthetic socket device; 1-Receiver housing; 11-Receiver cavity; 111-Pressure relief hole; 12-Mounting part; 13-Mounting cavity; 131-Ejection port; 132-Exhaust port; 14-Flexible support part; 2-Adjustment and fixing device; 21-Fixing housing; 22-Adjustment component; 221-Fixing part; 222-Guide part; 223-Adjustment part; 224-Elastic element; 3-Negative pressure component; 31-Negative pressure generating part; 32-Ejection pipe; 33-Filter part; 4-Sealing and fixing device; 41-Sealing part; 411-Fitting section; 412-Clamping section; 42-Sealing housing; 5-Motion detection device; 51-Guiding structure; 52-Magnetic part; 53-Coil; 54-Protective housing; 541-Guide groove; 55-Guide rod; 56-Buffer part. Detailed Implementation

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below. 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.

[0041] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are 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 with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0043] This invention provides a prosthesis socket device, a prosthesis, and a negative pressure adjustment method. Figures 1 to 9 This invention provides a specific embodiment of a prosthesis socket device, a prosthesis, and a negative pressure adjustment method.

[0044] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a prosthesis socket device 100, including a receiving housing 1 and an adjustment and fixing device 2. The receiving housing 1 has a receiving cavity 11 with one end open. One end of the receiving housing 1 is detachably connected to the adjustment and fixing device 2, and the other end is connected to a mounting part 12 for mounting and fixing the prosthesis body. The adjustment and fixing device 2 has an adjustment and fixing cavity that can be adjusted and positioned according to the size of the residual limb. The adjustment and fixing cavity is connected to the receiving cavity 11 through the opening, so that the residual limb can pass through the adjustment and fixing cavity and extend into the receiving cavity 11 for fixing.

[0045] In this invention, the receiving housing 1 has a receiving cavity 11 with one open end. One end of the receiving housing 1 is detachably connected to the adjusting and fixing device 2, and the other end is connected to a mounting part 12 for mounting and fixing the prosthesis body. The adjusting and fixing device 2 has an adjusting and fixing cavity that can be adjusted and positioned according to the size of the residual limb. The adjusting and fixing cavity is connected to the receiving cavity 11 through the opening, so that the residual limb can pass through the adjusting and fixing cavity and extend into the receiving cavity 11 for fixing. Since the residual limb passes through the adjusting and fixing cavity and extends into and is fixed in the receiving cavity 11, the residual limb is fixed by the adjusting and fixing cavity that can be adjusted and positioned according to the size of the residual limb. The residual limb is firmly fixed to the prosthesis receiving cavity device 100 by the friction between the adjusting and fixing cavity and the residual limb. For different users, the adjusting and fixing cavity can be adjusted to fit different sizes of residual limbs. Compared with the existing prosthesis receiving cavities that need to be specially customized according to different sizes of residual limbs, this greatly reduces costs and improves applicability.

[0046] It should be noted that in some embodiments, such as Figure 2 As shown, the receiving cavity 11 is provided with a flexible support part 14. The flexible support part 14 has a support surface for supporting the residual limb. The shape of the support surface is adapted to the shape of the residual limb. This arrangement avoids the residual limb from directly contacting the inner wall of the receiving housing 1, thereby improving the user's comfort.

[0047] It should be noted that in some embodiments, such as Figure 1 As shown, multiple adjustment and fixing devices 2 are provided, and the multiple adjustment and fixing devices 2 are connected end to end. By setting multiple adjustment and fixing devices 2, the length of the entire prosthetic socket device 100 can be increased, so that the prosthetic socket device 100 can be adapted to residual limbs of different lengths and sizes.

[0048] Preferably, the method by which the adjusting and fixing cavity adjusts and positions the residual limb is not limited, as long as the adjusting and fixing cavity can fix the residual limb. For example, in some embodiments, such as... Figure 4As shown, the adjusting and fixing device 2 includes a fixing part 221 movably disposed on the inner wall of the adjusting and fixing cavity. At one end of the fixing part 221 facing the adjusting and fixing cavity, a positioning wall is formed that conforms to and restricts the movement of the residual limb relative to the adjusting and fixing device 2. With this configuration, for different users, the position of the positioning wall within the adjusting and fixing cavity can be adjusted by adjusting the movement of the fixing part 221, ensuring that the positioning wall always conforms to the residual limb and positions and restricts the movement of the residual limb relative to the adjusting and fixing device, thus adapting to residual limbs of different sizes.

[0049] It should be noted that the positioning wall is curved, and the curved shape of the positioning wall is adapted to the shape of the contact surface of the residual limb.

[0050] Specifically, the positioning wall is covered with a layer of soft silicone, which increases the friction between the positioning wall and the contact surface of the residual limb, making the residual limb more firmly fixed, and also improves the user's comfort.

[0051] The number and position of the fixing parts 221 are not limited, as long as the fixing parts 221 can fit and fix the residual limb. For example, in some embodiments, such as Figure 4 As shown, multiple fixing parts 221 are provided, and these multiple fixing parts 221 are distributed circumferentially along the adjustment and fixing cavity. This arrangement allows for a wider range of overall positional adjustment of the fixing parts 221, enabling the adjustment and fixing device 2 to accommodate prostheses of more sizes. Furthermore, it prevents the residual limb from being compressed by only one fixing part 221, thereby improving user comfort.

[0052] Furthermore, the specific structure of the adjusting and fixing device 2 is not limited, as long as the fixing part 221 is movably disposed on the inner wall of the adjusting and fixing cavity. For example, in some embodiments, such as... Figure 5As shown, the adjusting and fixing device 2 includes a fixing housing 21 and an adjusting assembly 22. The fixing housing 21 has an adjusting and fixing cavity inside. The side wall of the fixing housing 21 is provided with guide holes and adjusting holes spaced apart along its circumference. The adjusting assembly 22 includes a fixing part 221, a guide part 222, and an adjusting part 223. The fixing part 221 is radially movable along the fixing housing 21. One end of the guide part 222 is connected to the fixing part 221, and the other end is movably disposed in the guide hole. An elastic element 224 is wound around the guide part 222, and one end of the elastic element 224 is connected to the fixing part 221, and the other end is connected to the inner wall of the fixing housing 21. The adjusting part 223 is threadedly connected to the fixing housing 21, and one end passes through the adjusting hole and abuts against the fixing part 221. With this configuration, when the size of the residual limb is small, the fixing part 221 needs to be away from the inner wall of the fixing housing 21. The user can rotate the adjusting part 223 clockwise, causing the abutting end of the adjusting part 223 to move away from the inner wall of the fixing housing 21, thereby driving the fixing part 221 away from the inner wall of the fixing housing 21. When the size of the residual limb is large, the fixing part 221 needs to be close to the inner wall of the fixing housing 21. The user can rotate the adjusting part 223 counterclockwise, causing the abutting end of the adjusting part 223 to move closer to the inner wall of the fixing housing 21. The adjusting part 223 and the fixing part 221 are released from contact. Since the elastic member 224 is located between the fixing part 221 and the inner wall of the fixing housing 21, under the pulling force of the elastic member 224, the fixing part 221 moves closer to the inner wall of the fixing housing 21 until it abuts against the adjusting part 223 again. By rotating the adjustment part 223, the fixing part 221 is moved radially in the fixing housing 21, thereby allowing the adjustment and fixing device 2 to accommodate more sizes of residual limbs.

[0053] Furthermore, relying solely on the friction between the adjustment and fixing cavity and the residual limb to fix the residual limb to the prosthesis receiving cavity device 100 may result in unstable fixation. Therefore, in some embodiments, such as Figure 2 As shown, the receiving housing 1 also includes a mounting cavity 13, which is connected to the receiving cavity 11 via an air extraction port 131. The prosthetic receiving cavity device 100 further includes a negative pressure assembly 3 disposed within the mounting cavity 13. The negative pressure assembly 3 includes a negative pressure generating part 31, which is connected to the air extraction port 131 via an air extraction pipe 32. The mounting cavity 13 has an exhaust port 132 communicating with the outside. This configuration creates a negative pressure environment within the receiving cavity 11, further securing the residual limb and making the prosthetic receiving cavity device 100 more secure. Moreover, the negative pressure fixation method is more comfortable than friction fixation.

[0054] Specifically, the negative pressure generating unit 31 is a vacuum pump, which can extract the air from the receiving cavity 11. The air enters the mounting cavity 13 through the air extraction hole 131 and the air extraction pipe 32, and is finally discharged from the exhaust hole 132, thereby increasing the negative pressure in the receiving cavity 11.

[0055] Furthermore, in some embodiments, such as Figure 2 As shown, the air extraction port 131 is provided with a filter 33 to prevent debris in the receiving cavity 11 from entering the negative pressure generating part 31 through the air extraction port 131, which would cause damage to the negative pressure generating part 31. At the same time, the air extraction pipe 32 is provided with a valve. Closing the valve can seal the receiving cavity 11, so that the negative pressure in the receiving cavity 11 remains unchanged.

[0056] It should be noted that in some embodiments, such as Figure 2 As shown, the receiving cavity 11 has a pressure relief hole 111 that communicates with the outside. The pressure relief hole 111 is sealed by a sealing plug. When the user needs to quickly release the fixation of the residual limb by the receiving shell 1, the sealing plug can be opened directly, so that the negative pressure in the receiving cavity 11 drops to zero quickly, thereby releasing the fixation.

[0057] In some embodiments, such as Figure 6 As shown, the prosthetic receiving cavity device 100 further includes a sealing and fixing device 4, which is connected to the adjusting and fixing device 2. The sealing and fixing device 4 includes a sealing portion 41 that can retract radially to fit and fix the residual limb. The sealing portion 41 has a sealing and fixing cavity, which communicates with the receiving cavity 11 through the adjusting and fixing cavity, allowing the residual limb to pass through the sealing and fixing cavity and the adjusting and fixing cavity in sequence and extend into and be fixed in the receiving cavity 11. With this configuration, the sealing portion 41 fits against the residual limb, fixing the residual limb through friction between the sealing portion 41 and the residual limb. Furthermore, the fit between the sealing portion 41 and the residual limb seals the sealing and fixing cavity, thereby sealing the receiving cavity 11.

[0058] To prevent damage to the sealing portion 41, in some embodiments, such as Figure 6 As shown, the sealing and fixing device 4 also includes a sealing housing 42, which is tubular and sleeved on the sealing part 41. This arrangement, by sleeved on the sealing part 41, prevents damage to the sealing part 41 and protects the remaining limb. Furthermore, a connecting structure can be provided on the sealing housing 42 to facilitate connection between the sealing and fixing device 4 and the adjusting and fixing device 2.

[0059] It should be noted that the material of the sealing part 41 is not limited, as long as the sealing part 41 can shrink radially to fit and fix the residual limb. For example, in some embodiments, the material of the sealing part 41 is an elastic material. Specifically, the sealing part 41 includes, but is not limited to, soft silicone material, as well as other elastic materials that can come into contact with the skin and are known to those skilled in the art.

[0060] Furthermore, in some embodiments, such as Figure 7 As shown, the sealing part 41 includes a fitting section 411 and a clamping section 412. The fitting section 411 covers the inner wall of the sealing housing 42, and the clamping section 412 is located at the end of the sealing housing 42 away from the adjusting and fixing device 2. The fitting section 411 has low elasticity and can improve the user's comfort by fitting with the residual limb. The clamping section 412 has high elasticity and is used to clamp the residual limb to achieve a sealing and fixing effect.

[0061] To further improve the sealing performance of the receiving cavity 11, in some embodiments, such as Figure 1 As shown, a sealing ring is provided at the connection between the receiving housing 1, the adjusting and fixing device 2 and the sealing and fixing device 4.

[0062] When the user is engaged in strenuous activity, the negative pressure within the receiving cavity 11 needs to be increased to ensure a more secure fixation of the residual limb and prevent it from detaching from the receiving housing 1 during strenuous activity. Therefore, in some embodiments, such as... Figure 2 and Figure 3 As shown, the prosthetic socket device 100 also includes a motion detection device 5 for detecting the user's movement state. The motion detection device 5 is disposed within the socket 1 and includes a guide structure 51 and a magnetic part 52. The guide structure 51 has a movable cavity, and the magnetic part 52 is slidably disposed within the movable cavity. A coil 53 is wound around the guide structure 51, and the coil 53 is located in the magnetic field of the magnetic part 52. With this configuration, when the user moves, the magnetic part 52 will reciprocate within the guide structure 51 due to inertia. Since the coil 53 is always within the magnetic field of the magnetic part 52, according to the law of electromagnetic induction, an induced electromotive force will be generated in the wire of the coil 53. The formula for the induced electromotive force is:

[0063]

[0064] E represents the induced electromotive force generated in the coil 53, n represents the number of turns of the coil 53, ΔB represents the change in magnetic field strength, S represents the area of ​​the magnetic field inside the coil 53, and Δt represents the change in time. As can be seen from the formula, the more intense the user's movement, the greater the reciprocating speed of the magnetic part 52. Simultaneously, because the magnetic field strength distributed along the length of the magnetic part 52 varies, the greater the rate of change of magnetic field strength with respect to time, the greater the value of the induced electromotive force generated in the coil 53. Therefore, the intensity of the user's movement can be reflected by the detected value of the induced electromotive force.

[0065] Preferably, in some embodiments, such as Figure 3 As shown, the motion detection device 5 further includes a protective housing 54, a guide rod 55, and two buffer portions 56. The guide structure 51 is disposed within the protective housing 54. Guide grooves 541 are formed at both ends of the protective housing 54. The guide rod 55 passes through the guide grooves 541 and the movable cavity in sequence. The guide rod 55 is connected to the magnetic part 52. The buffer portions 56 are wound around both ends of the guide rod 55 and are located between the guide grooves 541 and the magnetic part 52. With this configuration, the movement of the guide rod 55 within the guide grooves 541 causes the magnetic part 52 to slide within the movable cavity, preventing the magnetic part 52 from contacting the inner wall of the movable cavity and causing wear due to prolonged sliding. At the same time, the buffer portions 56 at both ends of the magnetic part 52 prevent the magnetic part 52 from reciprocating under inertia during user movement, thus avoiding collisions and damage with the ends of the movable cavity.

[0066] Furthermore, this embodiment of the invention also provides a prosthesis, which includes a prosthesis body and a prosthesis socket device 100. The prosthesis socket device 100 includes a receiving shell 1 and an adjustment and fixing device 2. The receiving shell 1 has a receiving cavity 11 with one end open. One end of the receiving shell 1 is detachably connected to the adjustment and fixing device 2, and the other end is connected to a mounting part 12 for mounting and fixing the prosthesis body. The adjustment and fixing device 2 has an adjustment and fixing cavity that can be adjusted and positioned according to the size of the residual limb. The adjustment and fixing cavity communicates with the receiving cavity 11 through the opening, so that the residual limb passes through the adjustment and fixing cavity and extends into the receiving cavity 11 for fixing. The prosthesis body is connected to the mounting part 12.

[0067] In addition, such as Figure 8As shown, this embodiment of the invention also provides a negative pressure adjustment method. The prosthetic socket device 100 includes a receiving housing 1, which has a receiving cavity 11 for inserting and fixing a prosthesis. The prosthetic socket device 100 also includes a motion detection device 5, a controller, and a negative pressure generating unit 31 for adjusting the negative pressure in the receiving cavity 11. The negative pressure generating unit 31 and the motion detection device 5 are both disposed in the receiving housing 1 and are electrically connected to the controller. The negative pressure adjustment method includes the following steps:

[0068] Step S10: Obtain the parameters detected by the motion detection device 5 and determine the user's motion state.

[0069] It should be noted that the motion detection device 5 is a sensor, and there are no restrictions on the specific parameters detected, as long as the parameters detected by the motion detection device 5 can reflect the user's current motion state.

[0070] Step S20: Determine the adjustment strategy for the negative pressure inside the receiving cavity 11 based on the motion state.

[0071] It should be noted that the controller determines the user's current motion state based on the parameters detected by the motion detection device 5, and dynamically adjusts the negative pressure environment in the receiving cavity 11 according to the motion state.

[0072] In this embodiment, the negative pressure adjustment method is applied to the prosthetic socket device 100. The negative pressure adjustment method includes: acquiring parameters detected by the motion detection device 5 and determining the user's motion state; and determining a negative pressure adjustment strategy within the socket 11 based on the motion state. This negative pressure adjustment method determines the user's current motion state using parameters detected by the motion detection device 5, and dynamically adjusts the negative pressure environment within the socket 11 according to different motion states, thereby adapting to users with different needs and solving the problem of poor applicability of existing prosthetic sockets.

[0073] refer to Figure 9 , Figure 9 This is a flowchart illustrating the second embodiment of the negative pressure regulation method of the present invention.

[0074] Based on the first embodiment described above, the negative pressure adjustment method of this embodiment includes the following in step S20:

[0075] Step S21: When the user is in a state of vigorous exercise, control the negative pressure generating unit 31 to operate to increase the negative pressure in the receiving cavity 11.

[0076] It should be noted that the negative pressure generating unit 31 is controlled by the controller to extract air from the receiving cavity 11, thereby increasing the negative pressure in the receiving cavity 11.

[0077] Step S21: When the user is in a gentle movement state, control the negative pressure generating unit 31 to stop operating in order to maintain the negative pressure in the receiving cavity 11.

[0078] In this embodiment, the parameters detected by the motion detection device 5 are first acquired and the user's motion state is determined. When the user is in a state of vigorous motion, the negative pressure generating unit 31 is controlled to operate to increase the negative pressure in the receiving cavity 11. When the user is in a state of gentle motion, the negative pressure generating unit 31 is controlled to stop operating to maintain the negative pressure in the receiving cavity 11.

[0079] refer to Figure 10 , Figure 10 This is a flowchart illustrating the third embodiment of the negative pressure regulation method of the present invention.

[0080] Based on the first embodiment described above, the motion detection device 5 includes a guide structure 51 and a magnetic part 52. The guide structure 51 has a movable cavity, and the magnetic part 52 is slidably disposed within the movable cavity. A coil 53 is wound around the guide structure 51, and the coil 53 is located in the magnetic field of the magnetic part 52. In this embodiment, the negative pressure adjustment method in step S10 includes:

[0081] Step S11: Obtain the preset value of the induced electromotive force.

[0082] It should be noted that the preset value is the induced electromotive force value set by the manufacturer after conducting a large number of experiments, and the user's current motion state is defined by the preset value.

[0083] Step S12: Obtain the current induced electromotive force in the coil 53.

[0084] It should be noted that the order of steps S11 and S12 is not restricted. Step S12 can be performed first, followed by step S11, or steps S11 and S12 can be performed simultaneously.

[0085] It should be noted that the current induced electromotive force within the coil 53 can be obtained through calculation, and the formula for the induced electromotive force is:

[0086]

[0087] E represents the induced electromotive force generated in the coil 53, n represents the number of turns of the coil 53, ΔB represents the change in magnetic field strength, S represents the area of ​​the magnetic field inside the coil 53, and Δt represents the change in time. From the above formula, it can be seen that the more intense the user's movement, the greater the reciprocating speed of the magnetic part 52. Simultaneously, since the magnetic field strength distributed along the length of the magnetic part 52 varies, the greater the rate of change of magnetic field strength with respect to time, the greater the value of the induced electromotive force generated in the coil 53. Therefore, the intensity of the user's movement can be reflected by the detected value of the induced electromotive force.

[0088] Step S13: Compare the current induced electromotive force with the preset value.

[0089] Step S14: When the current induced electromotive force is greater than the preset value, it is determined that the user is in a state of vigorous movement.

[0090] Step S15: When the current induced electromotive force is less than the preset value, it is determined that the user is in a smooth motion state.

[0091] In this embodiment, a preset value of induced electromotive force is first obtained, and then the current induced electromotive force in the coil 53 is obtained. The current induced electromotive force is compared with the preset value. When the current induced electromotive force is greater than the preset value, it is determined that the user is in a state of vigorous movement. When the current induced electromotive force is less than the preset value, it is determined that the user is in a state of gentle movement. Finally, the adjustment strategy of negative pressure in the receiving cavity 11 is determined according to the movement state.

[0092] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0093] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0094] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0095] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0096] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prosthetic socket device, characterized in that, The device includes a receiving housing and an adjusting and fixing device. The receiving housing has a receiving cavity with one end open. One end of the receiving housing is detachably connected to the adjusting and fixing device, and the other end is connected to a mounting part for mounting and fixing the prosthesis body. The adjusting and fixing device has an adjusting and fixing cavity that can be adjusted and positioned according to the size of the residual limb. The adjusting and fixing cavity is connected to the receiving cavity through the opening, so that the residual limb can pass through the adjusting and fixing cavity and extend into the receiving cavity for fixing. The receiving housing is further provided with an installation cavity, which is connected to the receiving cavity through an air extraction hole. The prosthesis receiving cavity device also includes a negative pressure component disposed in the installation cavity. The negative pressure component includes a negative pressure generating part, which is connected to the air extraction hole through an air extraction pipe. The installation cavity is provided with an exhaust hole that communicates with the outside. The prosthetic socket device also includes a motion detection device for detecting the user's movement state. The motion detection device is disposed inside the socket and includes a guide structure and a magnetic part. The guide structure has a movable cavity, and the magnetic part is slidably disposed in the movable cavity. A coil is wound on the guide structure, and the coil is in the magnetic field of the magnetic part. The prosthetic socket device also includes a controller. The negative pressure generating unit and the motion detection device are both electrically connected to the controller. The controller determines the user's current motion state based on the parameters detected by the motion detection device and dynamically controls the negative pressure generating unit to adjust the negative pressure environment in the socket according to the motion state.

2. The prosthetic socket device as described in claim 1, characterized in that, The adjustment and fixing device includes a fixing part movably disposed on the inner wall of the adjustment and fixing cavity, and a positioning wall is formed at one end of the fixing part facing the adjustment and fixing cavity to fit and restrict the movement of the residual limb relative to the adjustment and fixing device.

3. The prosthetic socket device as described in claim 2, characterized in that, The adjusting and fixing device includes a fixed housing and an adjusting assembly. The fixed housing has an adjusting and fixing cavity inside. The side wall of the fixed housing is provided with guide holes and adjusting holes spaced apart circumferentially. The adjusting assembly includes a fixing part, a guide part, and an adjusting part. The fixing part is radially movable along the fixed housing. One end of the guide part is connected to the fixing part, and the other end is movably disposed in the guide hole. An elastic element is wound around the guide part, and one end of the elastic element is connected to the fixing part, and the other end is connected to the inner wall of the fixed housing. The adjusting part is threadedly connected to the fixed housing, and one end passes through the adjusting hole and abuts against the fixing part.

4. The prosthetic socket device as described in claim 1, characterized in that, It also includes a sealing and fixing device, which is connected to the adjusting and fixing device. The sealing and fixing device includes a sealing part that can be radially contracted to fit and fix the residual limb. The sealing part has a sealing and fixing cavity, which is connected to the receiving cavity through the adjusting and fixing cavity, so that the residual limb can pass through the sealing and fixing cavity and the adjusting and fixing cavity in sequence and be inserted into and fixed in the receiving cavity.

5. A prosthesis, characterized in that, It includes a prosthesis body and a prosthesis receiving cavity device as described in any one of claims 1 to 4, wherein the prosthesis body is connected to the mounting portion.

6. A negative pressure adjustment method, based on the prosthetic socket device according to any one of claims 1 to 4, characterized in that, Includes the following steps: The parameters detected by the motion detection device are obtained and the user's motion state is determined. The adjustment strategy for the negative pressure inside the receiving cavity is determined based on the motion state.

7. The negative pressure regulation method as described in claim 6, characterized in that, The adjustment strategy for determining the negative pressure within the receiving cavity based on the motion state includes: When the user is in a state of strenuous exercise, the negative pressure generating unit is controlled to operate to increase the negative pressure in the receiving cavity; When the user is in a state of gentle movement, the negative pressure generating unit is controlled to stop operating in order to maintain the negative pressure in the receiving cavity.

8. The negative pressure regulation method as described in claim 6, characterized in that, The step of acquiring the parameters detected by the motion detection device and determining the user's motion state includes: Obtain the preset value of the induced electromotive force; Obtain the current induced electromotive force in the coil; Compare the current induced electromotive force with the preset value; When the current induced electromotive force is greater than the preset value, it is determined that the user is in a state of vigorous exercise; When the current induced electromotive force is less than the preset value, it is determined that the user is in a state of gentle movement.

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