45 results about "Residual limb" patented technology

The present disclosure describes self-adjusting sockets for lower limb prostheses in which each step transmits motion to a resilient resistive element coupled to an actuator configured to cycle between a rest position and an actuated position. The resistive element can transmit the motion to the actuator to cycle the actuator. Each cycle of the actuator acts through a mechanical linkage to tighten the socket around the residuum, until a desired threshold tightness on the residuum is reached. After the threshold tightness is reached, the resistive element yields and absorbs the motion rather than transmitting the motion, so that the actuator ceases to cycle on each step, preventing further tightening beyond the threshold.

The utility model discloses an artificial limb socket with a neck bush, and relates to the technical field of artificial limb sockets. Comprising an artificial limb receiving cavity, and a threaded hole is formed in the bottom of the artificial limb receiving cavity; the neck bush is used for being arranged on the stump in a sleeving mode, a metal support is arranged at the bottom of the outer side of the neck bush, and a lock pin is detachably connected to the center of the bottom of the metal support; the anti-damage bottom support structure is arranged at the lower end part of the neck bush and is connected with the metal support; and the outer side of one end of the special-shaped lock, which is provided with a lock hole for inserting the lock pin, is provided with an external thread and extends into the threaded hole to be connected with the artificial limb receiving cavity through threaded connection. The neck bush is detachably connected into an artificial limb receiving cavity through the special-shaped lock, wearing of an artificial limb is facilitated, meanwhile, the stump is better supported through the anti-damage bottom support structure at the rigid connecting position of the bottom of the neck bush, the stump is prevented from being hurt due to the fact that reverse acting force is generated on the stump, and the leg is prevented from being hurt.

Systems and methods are provided for applying electrical stimulation to a body by an electrode spaced from a target nerve of passage. It has been discovered that pain felt, or perceived to be felt, in a given region of the body can be treated by stimulating muscle close to a “nerve of passage” in a region that is superior (i.e., cranial or upstream toward the spinal column) to the region where pain is felt, such as in a case of post-amputation residual limb pain, or purportedly felt in the case of post-amputation phantom limb pain.

A sensor-driven adaptive thermal regulation system for prosthetic sockets is disclosed. The system integrates sensors with active thermoelectric cooling elements to manage heat and moisture accumulation within the prosthetic socket. Thermoelectric modules are positioned in proximity to the user's residual limb and are controlled by a Processing unit via; Logic-based circuitry. A heat transfer material serves as a thermal sink and a prosthetic liner, absorbing heat through state transitions to enhance dissipation. The system supports both manual and autonomous operation. In manual mode, users control cooling via a mobile application featuring biometric authentication, real-time sensor monitoring, and override functionality. In autonomous mode, cooling is triggered automatically when preset environmental thresholds are exceeded. A flexible heat sink further ensures efficient thermal transfer, improving prosthetic fit, comfort, and wearability. The system may be integrated into liners or retrofitted into existing above-knee and below-knee prosthetics.

The invention relates to an improved method for manufacturing a so-called final socket (2') from a provisional socket (2), for fitting a residual limb of an amputee. The method comprises 3D modeling of the inner surface of the provisional socket (2), including a 3D model (44) of said surface in a spatial reference frame (11), and automatic modification of said 3D model (44) to optimize the arrangement of an artificial limb (3) on the final socket (2). The method further comprises optimizing a digitization step by determining an improved position for a distance measuring tool (42) within the provisional socket (2) during modeling. The invention also relates to a manufacturing aid system for a final socket configured to implement the method of the invention. Fig. 8

A 3D printed prosthetic socket with a reinforced distal end comprises a shell (1) formed by 3D printing using a method of material extrusion, wherein the shell (1) comprises a proximal end of the shell (1) with an opening for inserting a residual limb of a lower extremity and a distal end of the shell (1). The prosthetic socket further comprises a reinforcing member (2) fixed to the distal end of the shell (1) by means of a connecting interlayer (3), wherein the reinforcing member (2) comprises a hollow part (4) of the reinforcing member (2) surrounding the lateral wall of the distal end of the shell (1) on all sides.

This application belongs to the field of medical prosthetic structure design technology, specifically disclosing a hip joint assembly and a powered hip disarticulation prosthesis. The hip joint assembly includes an arc-shaped slide rail, a hinge, a slider, a thigh motor, and a linkage structure. The arc-shaped slide rail is fixed to the lower part of the residual limb receiving cavity, with its arc-shaped opening facing upwards. The first part of the hinge is fixedly connected to the outer side of the residual limb receiving cavity. The slider is slidably disposed on the arc-shaped slide rail. The housing of the thigh motor is fixedly connected to the slider. One end of the linkage structure is connected to the second part of the hinge, and the other end is driven and connected to the output shaft of the thigh motor. This application forms a remote motion center that approximately coincides with the actual acetabulum position, enabling the prosthetic thigh to move around a rotation center close to the anatomical position of the human acetabulum, thereby improving gait naturalness and control performance, and solving gait deformity and compensatory movement problems.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

The invention discloses an intelligent wheelchair multi-mode control method and system, and particularly relates to the technical field of wheelchair control. The method comprises the following steps: acquiring voice data, head posture data and residual limb movement data of a user in real time, and establishing an initial association relationship between a user control intention and each modal feature; continuously tracking a sound production mode, head posture control stability and time evolution characteristics of residual limb actions, generating functional state evolution trend data and posture control drift characteristic data, and executing dynamic weighting compensation on multi-modal fusion parameters to obtain a self-adaptively updated multi-modal fusion model; according to the method, intention recognition and wheelchair motion control are carried out on the current real-time multi-modal features by using the self-adaptively updated multi-modal fusion model, so that the consistency and reliability of control intention recognition results are kept under the condition that the function state of a user is slowly changed, and the risk that the same motion intention is misjudged as different control instructions in different periods is reduced.

The utility model discloses an exhaust device of a prosthetic socket, which belongs to the technical field of prostheses and comprises a prosthetic socket and an exhaust component, the prosthetic socket is sleeved on the outer side of a stump silicon rubber case, and the exhaust component is fixedly arranged at the lower end of the prosthetic socket. The exhaust assembly comprises a first one-way exhaust valve detachably installed on the outer side of the artificial limb receiving cavity, a suction cup fixedly adsorbed to the first one-way exhaust valve, a three-way pipe fixedly connected to the suction cup and a micro vacuumizing motor connected with one end of the three-way pipe. The second one-way exhaust valve is connected with the other end of the three-way pipe; and the control part is fixedly mounted on one side of the micro vacuumizing motor. According to the exhaust device for the prosthetic socket, air on the inner side of the prosthetic socket is extracted, so that the prosthetic socket can be attached to the outer side of a stump silicon rubber case, the stump silicon rubber case end of a user can fully apply force, the use experience is provided, and a second one-way exhaust valve is arranged at the tail end of a three-way pipe.

The application discloses a control method of a bionic hand. The bionic hand comprises a plurality of fingers. The control method of the bionic hand comprises the following steps: controlling corresponding fingers to bend from an initial angle to a first angle according to myoelectric signals on a residual limb surface, each finger corresponding to an initial angle and a first angle; detecting a duration of the myoelectric signals; and controlling the fingers to bend from the first angle to a target angle according to the duration of the myoelectric signals. The control method of the bionic hand disclosed by the application can solve the problem that the fingers of the bionic hand are difficult to control accurately. In addition, the application also discloses a control device of a bionic hand and a bionic hand.

The invention relates to an improved method for manufacturing a prosthesis (1') from a positive mould (110), for fitting to a residual limb of an amputee. The method comprises 3D modelling of the inner surface of an existing socket (2) comprising a 3D model (44) of the surface in a spatial reference system (10) and automatic modification of the 3D model (44) in order to optimize the arrangement of an artificial limb (3) in the socket (2') to be manufactured. The method further comprises determining a position of a fastener (116) in the spatial reference system (10) with the aid of a guide (112) for placement of the fastener (116). The invention also relates to a manufacturing aid assembly (100) configured to aid in the manufacture of a socket according to the method of the invention and comprising a positive mould (110) and the placement guide (112).

An adjustable socket system includes first and second shell components and first and second longitudinal supports connected to a base. The socket system is movable between an open configuration to loosen the fit of the socket system, and a closed configuration to secure the fit of the socket system on residual limb received therein. A tightening system includes a tensioning unit having a handle defining a moment arm rotatable about a rotation axis, and a tensioning element operatively coupled to the handle via a movable connection point located and protected between the first shell component and the first support and to the shell components via a control point. Rotation of the handle displaces the movable connection point and the tensioning element relative to the control point to move the socket system to the closed configuration.

The present application relates to an optimization method for coupling of a prosthesis and a residual limb based on digital twinning. The anatomical structure characteristics and functional attributes of the residual limb skin, soft tissue and bone are fused with stress distribution data in multi-modal data fusion; a multi-layer digital residual limb relationship modeling is constructed; a multi-scale contact space composed of a structure adaptation area, a force transmission area and an energy buffer area of the residual limb and the prosthesis in dynamic behavior is defined; in the simulation of dynamic interaction, the shear force migration trajectory, stress concentration mode and soft tissue slip response between each micro unit of the coupling surface are simulated; the physical partition relationship of the coordination domain is constructed to assist in optimizing the structure and material function gradient of the prosthesis interface; the micro-injury area caused by the prosthesis in wearing and use is described, and the minimum tissue disturbance path is calculated; through deformation vector field analysis and thermal force coupling relationship modeling, the risk distribution of tissue fatigue induced by the prosthesis interface under long-time use is evaluated; dynamic multi-scale coupling optimization and multi-objective optimization control are realized to achieve fatigue risk visualization prediction and early warning.

Stump simulator for medical training purposes, especially for plaster casts or palpation exercises, characterized by an anatomical bone model enclosed by a soft layer of silicone gel or a similar soft material, wherein the external shape and texture of the soft tissue layer corresponds to a real amputation stump of a human extremity.

A prosthetic device includes a socket, fasteners, and a pylon. The socket defines a cavity configured to receive a residual limb of a user. The socket includes a base defining multiple blind-holes. Each of the fasteners are configured to be received within a corresponding one of the blind-holes. The fasteners each include internal threads. The pylon includes through-holes that are aligned with a corresponding one of the blind-holes. The pylon is configured to be directly coupled with the base of the socket through externally threaded fasteners that extend through the through-holes and threadingly couple with the internal threads of the plurality of fasteners.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

A method of making a thermoplastic gel prosthetic liner for use with a prosthetic assembly that acts as the interface between the residual limb of an amputee and the socket assembly. The prosthetic liner comprises an open proximal end, a closed distal end, and sidewalls comprising an inner layer of molded thermoplastic gel. The thermoplastic gel is molded over a mandrel that has been sandblasted using #36 grit and, optionally, #320 grit at 100 psi so as to form microcraters and reduce the coefficient of static friction.

The application discloses a kind of intelligent prosthesis control method and system with feedback mechanism, and the application relates to intelligent prosthesis control technical field, comprising the following steps: S1: acquisition step: through the sensor cluster of prosthesis foot bottom, ankle joint and knee joint deployment, real-time acquisition terrain feature, joint motion parameter and residual limb electromyogram signal.The intelligent prosthesis control method and system with feedback mechanism, through the double driving architecture of biomechanics cognitive model and reinforcement learning strategy model, in combination with the double verification mechanism of mutual inspection arbitration unit, realizes the adaptive accurate matching of feedback signal type, intensity and timing under complex dynamic environment.Biomechanics model ensures that feedback parameters meet clinical safety boundary, reinforcement learning model optimizes environmental adaptability in real time, mutual inspection arbitration resolves model conflict through physiological tolerance screening and control stability prediction, solves the problems of control misalignment, too high user cognitive load and walking confidence decline caused by traditional static rule feedback.

An apparatus for donning a garment over a residual limb is disclosed. The apparatus includes a sleeve having a first end and a second end spaced along a longitudinal axis. The sleeve has a peripheral sidewall surrounding the longitudinal axis. An opening is defined by the peripheral sidewall and extends continuously through the sleeve from the first end to the second end. At least one series of perforations extending from the first end to the second end of the sleeve.

The application discloses a bendable lower leg extremely short residual limb prosthesis, which comprises an outer receiving cavity and an inner receiving cavity which are connected together, the outer receiving cavity is mainly in a U-shaped structure and the connecting point with the inner receiving cavity is close to the upper side of the inner receiving cavity, a connecting rod is fixedly installed at the lower part of the outer receiving cavity, a prosthetic foot is connected to the lower end of the connecting rod, a power assisting mechanism is arranged between the prosthetic foot and the connecting rod, the power assisting mechanism comprises a power assisting device and a driving piece for driving the power assisting device; the outer receiving cavity and the inner receiving cavity in the prosthesis are connected through a rotating connection mode, so that the prosthesis itself has a bending function, even if the residual limb personnel wears the knee joint in the inner receiving cavity, the bending function can be provided when walking or sitting, and thus the problem that the knee joint bending function is lost after the lower leg residual limb end wears the prosthesis is solved.

A prosthetic liner has a lower longitudinal extensibility in a distal region than in a proximal region, or optionally an intermediate region. The distal end region may have a vertical extension between 0-30% and a horizontal extension between 10-200%, while in contrast, the proximal end region has a vertical extension between 55-125% and a horizontal extension between 100-175%. The extensibility of the lining in each pressure sensitive area of the stump can also be reduced or improved according to the area. A variety of stitches may be used at the distal end to achieve this reduced longitudinal extensibility. Preferably, the liner is made of a stretchable material. The liner also has an inner layer of elastomeric gel. The design of the prosthesis lining is mainly used for preventing piston movement of the residual limb of the amputee in the lining and improving the comfort level of a pressure sensitive area of the residual limb.

Various aspects of this disclosure relate to a prosthetic cover comprising an array of sensors, which transmit signals to an array of electrodes in a liner that fits over a residual limb of an amputee. Different interactions with the prosthetic cover cause different activation of the electrodes to transmit electrical current through different areas of the residual limb and modulate neurons differently within the residual limb.

A prosthetic device includes a socket, fasteners, and a pylon. The socket defines a cavity configured to receive a residual limb of a user. The socket includes a base defining multiple blind-holes. Each of the fasteners are configured to be received within a corresponding one of the blind-holes. The fasteners each include internal threads. The pylon includes through-holes that are aligned with a corresponding one of the blind-holes. The pylon is configured to be directly coupled with the base of the socket through externally threaded fasteners that extend through the through-holes and threadingly couple with the internal threads of the plurality of fasteners.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

The utility model relates to a high-arch carbon fiber foot plate which comprises an upper foot plate, a lower foot plate and a middle main foot plate which are made of carbon fiber materials. One end of the upper foot plate is connected with the middle main foot plate through a fastener; the middle main foot plate is connected with the lower foot plate through a connecting piece; wherein the upper foot plate is positioned above the middle main foot plate; the middle main foot plate is positioned above the lower foot plate; the utility model has the advantages that the lower foot plate adopts a high arch design, so that better energy storage performance can be realized, a user can walk more easily, and higher exercise intensity can be realized; meanwhile, the high arch is combined with the long toe separating structure, so that better road surface adaptability is achieved, and the residual limb of a user can be better protected; due to the impact protection structure of plantar flexion and dorsal flexion, the product has longer service life.

The utility model relates to a half-toe carbon fiber foot plate which comprises an upper foot plate, a lower foot plate, an artificial limb connector, a connecting device and a half-toe structure. The upper foot plate and the lower foot plate are fixedly connected through a connecting device; the head ends of the upper foot plate and the lower foot plate and the tail end of the lower foot plate are respectively provided with a half toe separating structure; the artificial limb connector is fixedly connected to the top of the upper foot plate through a fastener; the artificial limb connector comprises a rectangular pyramid, a ring seat, a carbon fiber mold pressing head and a threaded insert which are sequentially arranged from top to bottom; the utility model has the advantages that the full-foot-length sole design and the tow connecting device are adopted, so that better rolling performance can be provided in the walking process, the half-toe structure can better walk on a rugged road surface, and better walking experience is provided for a user; and the weight of the sole product is further reduced through the design of the molded artificial limb connector taking the non-metal carbon fiber as the main body, so that the burden of the stump of the user is reduced, and the stump of the user is better protected.

A prosthesis (1) of an amputated limb for a pet is disclosed, wherein: it comprises a main body (2) extending longitudinally, which is hollow, which is made in a single piece and which is shaped to receive a stump (3) of an amputated limb (4); the main body (2), in turn, comprises: a first part (5) extending along a first axis (A1) and forming a tubular structure; a second part (6) extending along a second axis (A2) and having a first opening (7); it comprises an end (8) which is connected to the first part (5) and which comprises an external surface (9) arranged to contact the ground during the use of the prosthesis (1) of the limb. Furthermore: the prosthesis (1) of the limb comprises anchoring means (10) which are carried by the second part (6) and which are arranged to anchor the stump (3) of the amputated limb (4) and the main body (2) to each other; the first part (5) and the second part (6) are angularly arranged with respect to each other so that the second part (6) laterally embraces part of the radius and ulna bones of the anterior amputated limb (4) or part of the tibia and fibula bones of the posterior amputated limb (4), and the first part (5) receives the stump (3) of the amputated limb (4) during the use of the prosthesis (1) of the limb.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.