97 results about "Residual limb" patented technology

The present invention is directed to a reusable residual limb protector that can be used with a knee immobilizer to protect a recent amputee patient from further injury and infection of the amputation site while preventing knee flexion contractures. In alternative embodiments, the residual limb protector is configured for use with one patient. A method of use of the residual limb protector is also disclosed herein.

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.

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.

The invention relates to the field of medical instruments, in particular to an intelligent upper limb prosthesis sensing system with a tactile representation function. The touch sensing module is used for collecting touch information when the artificial limb is in contact with an external object; the signal processing module is electrically connected with the tactile sensing module and is used for converting the tactile information into recognizable tactile feature data; the feedback control module is connected with the signal processing module and is used for generating a corresponding feedback control signal according to the tactile feature data in combination with a preset tactile feedback strategy; and the feedback execution module is connected with the feedback control module and is used for executing corresponding actions according to the feedback control signal and providing tactile feedback for the residual limb part of the patient. Tactile information (direct tactile information and indirect tactile information) is collected through the tactile sensing module, so that the perception of a patient when the patient touches an external object through the artificial limb is improved.

The utility model discloses a dog's movable all-covered artificial limb relates to pet artificial limb technical field, including adjusting component, adjusting component includes telescopic groove, rotary handle, support tube and elastic support leg, the bottom opening of telescopic groove is rotatingly equipped with rotary handle. According to the movable full-wrapping artificial limb for the dog, firstly, the belly receiving cavity is arranged on the belly of the pet and fastened through the hook-and-loop fastener, then the stump part of the pet is placed in the stump receiving cavity with the top opening of the full-wrapping barrel, and finally according to the use requirement, the rotating handle is rotated to be matched with the supporting pipe through the threaded groove of the hole of the rotating handle; the extension length of the telescopic groove, located in the opening of the bottom of the full-wrapping barrel, of the supporting pipe is adjusted, so that the artificial limb part and other limbs are kept to be consistent in height, and the assembly requirements of pets of different systems are met. And meanwhile, the structure is simplified, and the production cost is reduced.

The present application relates to a kind of power ankle prosthesis based on adjustable position one-way parallel spring, mainly by support mechanism, power direct drive mechanism, spring mechanism, adjusting mechanism, toe mechanism composition.Support mechanism is connected with human lower extremity stump, power direct drive mechanism, spring mechanism, adjusting mechanism are fixed on support mechanism, and toe mechanism is hinged with support mechanism.The support mechanism of the present application provides the support of ankle prosthesis, power direct drive mechanism and spring mechanism provide the energy output and support torque required in the walking process of power ankle prosthesis, spring mechanism stores passive energy and releases, compensates motor energy consumption, adjusting mechanism realizes the adaptive adjustment to wearer gait speed in the walking process, and elastic toe mechanism simulates the elastic mechanism of normal human toe in the walking process, provides passive elastic grip for ankle.

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.

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 utility model relates to the technical field of correctors, in particular to a corrector for preventing joint deformity of a stump, which comprises a fixing band supported by a metal support strip, a fixing iron piece and a connecting elastic band, the outer side of the fixing band is fixedly connected with the fixing iron piece, one end of the fixing iron piece penetrates through one side of the fixing band and is fixedly connected with one end of the connecting elastic band, and the other end of the fixing iron piece is fixedly connected with the connecting elastic band. The connecting elastic band is fixedly connected with the soft orthopedic sleeve through the fixing iron piece, one end of the fixing band is fixedly connected with an adjusting device, and a ventilation device is installed on the outer side of the fixing band. The fixing band comprises a fixing band main body, one side of the fixing band is provided with a mounting groove, one side of the mounting groove is fixedly connected with a hook surface magic tape through sewing, the ventilation device comprises a moisture absorption layer, and one side of the moisture absorption layer is fixedly connected with an auxiliary structure through sewing. Sweat is prevented from accumulating between the stump and the corrector, and the skin problem caused by long-time soaking of sweat is avoided.

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.

A ventilated prosthetic socket includes a rigid, structural and load-bearing socket body forming an inner volume adapted to receive a residual limb, and a wall thickness extending from an inner wall surface bordering the inner volume to an outer wall surface. The socket body defines an opening extending through the wall thickness. At least one vent element communicates the inner wall surface to the outer wall surface and extending therebetween in the opening along the socket body to thereby permit a transfer of air from the inner volume to outside of the socket through the opening. The at least one vent element is separately formed from the socket body and discretely insertable into the opening and secured against the inner surface and the outer wall surface. A method and kit are provided to adapt the socket in a ventilated form.

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.

Aids (1) for handling a liner (2) for positioning on a stump for use when wearing a prosthesis, comprising a substantially cylindrical base body (5) with a substantially circular outer shape, wherein the base body (5) is designed on its outer surface (6) for slipping the liner (2) over it in an inside-out state, wherein an end region of the cylindrical base body (5) is designed as a connection region (7) for contacting the liner (2) and / or for connecting it, wherein the aid (1) is designed such that, after contacting the liner (2) and / or connecting it, the liner (2) can be turned inside out onto the outer surface (6) of the base body (5) starting from the connection area (7), and the aid (1) is designed such that the liner (2) placed on the base body (5) can be placed on the corresponding stump in a right-turned state when the stump is positioned on the liner (2) in the connection area (7), and / or the aid (1) is designed such that when the stump with the liner (2) on it is positioned in the right-handed state in the connection area (7) the liner (2) can be slipped from the stump onto the outer surface of the base body (5) in the left-handed state.

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 present disclosure pertains to prosthetic systems (100, 300) that encompass a prosthetic foot (104) and a pump mechanism (102) devised to eliminate fluid between a prosthetic socket and a residual limb or liner, thereby sustaining a hypobaric pressure chamber within a cavity of the prosthetic socket. The pump mechanism may incorporate a fluid chamber (134) established between a membrane (126) and the housing (108) of the pump mechanism. Forces resulting from the user's gait during the compression and expansion of the prosthetic foot can be transmitted to an L-brace, which is configured to actuate the membrane of the pump mechanism, facilitating the influx and efflux of fluid into and from the fluid chamber.

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.

A protective device for an upper extremity post-operative residual limb of a user. The protective device includes a multi-section shell having a shape that corresponds to an anatomical structure of the upper extremity post-operative residual limb of the user. The protective device also includes a hinge coupled with a first section and a second section of the multi-section shell, the hinge configured to facilitate relative rotation of the first section and the second section to transition the protective device between an open configuration and a closed configuration. The multi-section shell is configured to receive one or more attachments to increase functionality of the upper extremity post-operative residual limb of the user.

The application discloses a kind of thigh prosthesis socket optimization manufacturing method combined with digital and flexible pressure sensor.The digital reconstruction of thigh residual limb physical model;To the residual limb profile digital model after reconstruction Space calibration and size calibration processing;To the residual limb profile digital model after space calibration and size calibration Sparse processing and editing and optimization;Sparse point cloud digital model and digital point cloud model of brim and seat are spliced into thigh prosthesis digital model;Set up flexible pressure sensor pressure analysis adjustment local fragment thickness, generate outer surface to form double-sided sparse point cloud Prosthesis socket digital model, finally conversion carries out 3D printing.The application utilizes flexible sensing unit and the point cloud unit on digital skin corresponding, carries out static and dynamic muscle stress real-time change evaluation, can quickly adapt to physiological changes of patient when rechecking, provide more personalized and timely rehabilitation solution.

The utility model provides a buffer layer structure of an artificial limb socket, which comprises a net-shaped structure inner layer arranged in a surrounding manner and used for being connected with a flexible lining to form a receiving cavity, and the receiving cavity is used for being connected with a residual limb of a user; the at least one first negative Poisson's ratio supporting layer is connected to the outer side of the net-shaped structure; the net-shaped structure interlayer is arranged on the outer side of the first negative Poisson's ratio supporting layer in a surrounding mode; the at least one second negative Poisson's ratio supporting layer is arranged on the outer side of the net-shaped structure interlayer, and the outer side of the second negative Poisson's ratio supporting layer is used for being connected with a shell; when the residual limb of the user is pulled away from the receiving cavity, the first negative Poisson's ratio supporting layer and the second negative Poisson's ratio supporting layer both expand towards the inner side of the inner cavity. The problem that an artificial limb in the prior art slides frequently and falls off accidentally when bearing force in the direction away from the residual limb of a user is solved.

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).

A knee orthosis for a trans-tibial amputee having a leg prosthesis including a socket for receiving a stump, the knee orthosis has: a femoral cuff; a tibial cuff having an inner face facing the socket and an outer face, the tibial cuff defining a locating member; a hinge pivotally connecting the cuffs; and a tibial cuff locator including a body protruding from a base, the base having a prosthesis engaging surface adapted to be mounted on the leg prosthesis, the body of the tibial cuff locator extending outwardly from the base along a locator axis, the body being matingly engaged with the locating member of the tibial cuff, wherein translation of the tibial cuff relative to the tibial cuff locator in one or more directions transverse to the locator axis is mitigated with the tibial cuff locator matingly engaged with the locating member of the tibial cuff.

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.

Method of designing a trans-femoral prosthesis, which includes an artificial limb replacing the missing limb and a terminal for coupling said artificial limb to a stump, the method comprising the following steps: the separation of the coupling terminal to the stump into two functional components (1, 2); the definition of an algorithm that describes the three-dimensional trend of the shape of the internal surface of the first component (1) intended to adhere to the external surface of a generic stump; generating a function that describes the shape of the internal surface of said first component (1) morphologically adapted to a specific stump; the generation of a digital model of said first and / or second component configurable or convertible into a command file for the control of a manufacturing device of the numerical control type; manufacturing of said prosthetic socket obtained by executing said command file; and the coupling of the said two components of the said prosthetic socket.

Provided herein is an inflatable compression device for performing compression therapy to an amputated limb of a subject, the device includes a compression sleeve and an adjustable compression pocket configured to provide compression therapy to the stump face and adjust to the length of the amputated limb. Further provided are systems and methods of using the same.

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.