14 results about "Joint stiffness" patented technology

The utility model discloses an orthopedic nursing traction support, which relates to the technical field of medical instruments, and comprises a bracket, an adjusting pad is arranged on one side of the bracket in a sliding and penetrating manner, the other side of the bracket is fixedly connected with a stand column, the bottom of the bracket is fixedly connected with an assembly block, and the lower end of the assembly block is provided with a first hydraulic oil cylinder. By means of the assembling block and the connecting shaft, the angle of the extension rods on the two sides is adjusted, the fixing device is suitable for patients of different body types, after the feet of the patients are fixed to the fixing base, the stability of the position of the fracture broken end can be maintained, shortening and displacement of the fracture broken end are overcome, fracture reduction is more accurate, and during follow-up rehabilitation training, the rehabilitation training efficiency is improved. The position of the sliding seat on the extension rod can be adjusted, the knee joint is driven to be bent in cooperation with rotation of the extension rod, and the provided traction force assists in functional exercise of limbs, promotes blood circulation, prevents amyotrophy and joint stiffness and accelerates recovery of limb functions.

This application discloses a method and system for controlling a lower limb exoskeleton using a brain-computer interface based on intent confidence, relating to the field of medical rehabilitation technology. First, the system identifies the original electroencephalogram (EEG) signal to obtain intent confidence, and maps an impedance parameter set including joint stiffness and damping coefficients by combining gait phase information. Second, it extracts motion position and interaction force errors, compares the intent confidence with the actual execution state using a sliding time window to obtain neural matching errors, and merges these three into a total composite error. Simultaneously, it assesses human-machine coupling compliance based on changes in human joint angles and exoskeleton torque, and generates a safety gain coefficient. Finally, it performs gain calculations on the total composite error based on the impedance parameter set, and corrects it with the safety gain coefficient to obtain the target control torque for output to the actuator. This constructs a neural-force-motor three-loop architecture, achieving compliant and adaptive on-demand assistance and highly safe human-machine collaborative rehabilitation with defensive protection.

The invention discloses a calcaneal fracture three-dimensional traction reduction device, and relates to the technical field of medical instruments, the calcaneal fracture three-dimensional traction reduction device comprises a base, a supporting pad is fixedly arranged at the top of the base, a side plate is fixedly arranged on the side wall of the supporting pad, and a horizontal plane moving mechanism is rotatably arranged at the top in the base. Through the arrangement of an arc plate, an arc block, a rotating seat and an arc limiting groove, a connecting rod and a rotating ring are driven to drive a calcaneal fracture part of a patient to rotate synchronously aiming at the rotation of the calf of the patient, so that the traction direction of the patient is always kept consistent, and the whole body is driven to move through the rotation of the calf during movement; the fracture traction part of a patient is prevented from being pulled and painful, small-range movement of the patient can be guaranteed, the comfort of the patient is improved, the traction puncture part of the patient can be prevented from being painful, synchronous adjustment of the traction force direction along with movement is guaranteed, and joint stiffness and movement disorder caused by long-time fixation of the joint are avoided.

The utility model discloses a kind of postoperative shaping auxiliary devices for neck and back, applied in rehabilitation engineering technical field, including support plate, the top of the support plate is bolted with fixed plate, the top of the front of fixed plate is bolted with adjusting box;The utility model can reduce blood stasis caused by long-term braking by moderate activity design, accelerate inflammation subsides and wound healing, reduce muscle spasm and nerve compression on the basis of maintaining neck physiological curvature, relieve postoperative pain, reduce postoperative muscle fatigue and joint stiffness by dispersing neck pressure, improve patient comfort degree;While maintaining the stability of spine, allow moderate activity, avoid muscle atrophy or joint stiffness caused by long-term complete braking, support device shares back muscle load, relieve postoperative muscle fatigue and spasm caused by compensatory effort, buffer layer reduces the friction of skin and hard brace, reduce the risk of skin damage caused by long-term wearing.

The utility model discloses an adjustable flexor tendon injury orthosis which comprises an orthosis forearm cylinder, a knob shoelace buckle, a thumb sleeve, an index finger sleeve, a middle finger sleeve, a ring finger sleeve and a little finger sleeve, and the thumb sleeve, the index finger sleeve, the middle finger sleeve, the ring finger sleeve and the little finger sleeve are connected with clamping grooves of the knob shoelace buckle through ropes respectively. The knob shoelace buckle is additionally arranged on the front arm cylinder of the orthosis to adjust the length of the rope, so that the use requirements of flexor tendon injury in different recovery periods can be met, and the service life of the orthosis is prolonged as much as possible; when the flexor tendon is damaged, the orthosis enables the flexor tendon to slide and promote joint movement through active stretching and passive buckling processes, and tendon adhesion and joint stiffness caused by long-term braking can be reduced to the maximum extent; along with the progress of rehabilitation treatment, the passive buckling strength can be adjusted by turning the shoelace buckle to increase or decrease the length of the rope.

The utility model discloses an orthopedic joint rehabilitation training device, which is applied to the technical field of medical instruments and can effectively improve the movement range of elbow joints, enhance the coordination of elbow and forearm muscles and promote blood circulation around the joints through controllable bending and unbending actions. Joint stiffness and soft tissue adhesion can be prevented through regular movement, and meanwhile the hand grabbing capacity is enhanced in combination with the holding action; due to the design of adjustable holding distance, arm lengths of different patients can be accurately adapted, and it is ensured that a hand holding point is aligned with the axis of a shoulder and wrist joint during elbow joint flexion and extension training; muscle strength levels of different rehabilitation stages of a patient cannot be matched due to fixed training intensity, so that joint injury is caused by overlarge early load or muscle activation is delayed due to insufficient later load.

Embodiments include a cryogenic device for alleviating pain by cryogenically treating a nerve, the cryogenic device including a handpiece; a needle coupled to a distal end of the handpiece, the needle including a needle lumen, the needle being configured for insertion into a skin of a patient along an insertion axis at a site laterally displaced from a treatment zone proximate to the nerve. The needle is configured to resiliently bend after insertion away from the insertion axis, such that at least a portion of the needle is adapted to traverse a skin layer laterally toward the treatment zone. The device includes a cooling fluid supply tube extending distally into the needle lumen; and a cooling fluid source, wherein the cooling fluid source is coupled to the cooling fluid supply tube to direct cooling fluid into the needle lumen.

The present invention discloses a Traditional Chinese Medicine (TCM) splint external fixation device, comprising five dorsal splints, five radial splints, five volar splints, and an ulnar splint for use when the wrist joint is in the neutral, dorsiflexion, flexion, functional, and support positions, respectively. The TCM splint external fixation device of the present invention can adapt to changes in wrist fracture classification and staging. It has a modular structure, is simple and quick to use, can improve the comfort of fracture external fixation treatment, and can reduce the occurrence of sequelae such as joint stiffness in the later stages.

Embodiments include a cryogenic device for alleviating pain by cryogenically treating a nerve, the cryogenic device including a handpiece; a needle coupled to a distal end of the handpiece, the needle including a needle lumen, the needle being configured for insertion into a skin of a patient along an insertion axis at a site laterally displaced from a treatment zone proximate to the nerve. The needle is configured to resiliently bend after insertion away from the insertion axis, such that at least a portion of the needle is adapted to traverse a skin layer laterally toward the treatment zone. The device includes a cooling fluid supply tube extending distally into the needle lumen; and a cooling fluid source, wherein the cooling fluid source is coupled to the cooling fluid supply tube to direct cooling fluid into the needle lumen.

A handheld personal care device having an actuator for implementing a personal care function that generates vibrations (or a plurality of different vibrations). The sensor device detects a signal that varies depending on vibrations of the personal care device. By analyzing the signal, a gripping pattern of the user on the handle is detected. This may be used to detect problems encountered by a user when creating a grip caused by a physical disability, such as ankylosis caused by arthritis.

The invention relates to the technical field of medical instruments, in particular to a neurology limb recovery training device which comprises a training chair, armrests, a first telescopic rod, a fixing seat, a sliding block and the like. Armrests are connected to the left side and the right side of the training chair, self-locking first telescopic rods are connected to the armrests, fixing seats are connected to the upper sides of the left portion and the right portion of a chair back of the training chair, first sliding grooves are formed in the fixing seats, and sliding blocks are slidably connected to the interiors of the first sliding grooves. The rehabilitation training device is provided with the fixing base, the sliding block, the locking assembly, the first hinge piece and the supporting plate, training is conducted on the abduction angle and the adduction angle of the upper arm of a patient, recovery of the range of motion of shoulder joints, prevention of joint stiffness and muscle atrophy and promotion of upper limb motion function reconstruction are facilitated, the hand strength of the patient can be subjected to recovery training through the holding rod, and the rehabilitation training effect is good. The hand grasping ability is improved, fine action control is improved, hand muscle strength is enhanced, hand muscle strength degeneration is prevented, and the self-care ability of a patient is improved.

A prosthetic wrist unit providing a connection between the arm and a hand mechanism, comprising a wrist base unit with at least one connection slot into which the hand mechanism is to be inserted and at least one connecting piece enabling the rotational movement of the prosthetic wrist unit; a joint including a joint seat and a joint body; a locking mechanism comprising a locking mechanism opening into which the joint body is inserted and enabling the prosthetic wrist unit to operate in two positions, i.e., fixed or movable; an arm coupling unit into which the joint and the locking mechanism are inserted and which restricts the movement of the joint and the locking mechanism; and at least one tendon ensuring the joint stiffness of the prosthetic wrist unit.

The application discloses a main rod connecting device of an external bone fixing frame and relates to the technical field of medical instruments. The main rod connecting device comprises a fixing rod, a steel needle is arranged in the fixing rod, two groups of universal joints are arranged at opposite ends of the fixing rod, a shell is arranged between the two groups of universal joints, a hierarchical rotating mechanism is arranged in the shell, an adjusting assembly is arranged at the lower end of the front side of the shell, the hierarchical rotating mechanism comprises a blocking plate, a rotating rod is rotatably connected to the upper end of the blocking plate, and a resistance assembly is arranged in the second gear. The main rod connecting device can simulate normal joint movement, solve the problem of joint stiffness in each recovery stage of a patient, help the patient to rebuild movement perception, improve the recovery effect, gradually increase the resistance when the patient's limbs rotate, strengthen the exercise and adaptability of the patient's limbs, improve the recovery effect of the fractured area of the patient, and promote the growth of bone callus.

The application discloses a flexible arm posture optimization method based on a joint stiffness model, and comprises the following steps: constructing a flexible arm end joint stiffness model, calculating the stiffness of the flexible arm end at a set posture according to the end joint stiffness model, and adopting an end stiffness ellipsoid to describe the stiffness of each direction of the flexible arm end; solving the kinematic inverse solution through bidirectional search according to a posture optimization algorithm, solving the stiffness of each joint group of the posture corresponding to the kinematic inverse solution on the basis of the deformation compensation of the mechanical arm, and sorting the stiffness of each joint group in descending order to obtain an optimized posture sequence; establishing a man-machine collaborative optimization mechanism according to the optimized posture sequence and working environment image information, constructing a virtual model of the working state of different optimized postures in the working environment, and selecting the most reasonable working posture under the current working condition according to the environment information and the stiffness information. The flexible hydraulic mechanical arm end stiffness is accurately expressed, and intuitive auxiliary reference can be provided for the operator in a complex environment.