191 results about "Ulnar digital nerve" patented technology

In one embodiment, the invention relates to systems, methods, and apparatus relating to the detection of a neuropathy such as a periopertive neuropathy. In one embodiment, a wristband comprising a plurality of anodes and cathodes is used. The wristband can be a component in a electrode array that includes a plurality of reference or recording electrodes. The electrode array can be configured to stimulate and collect responsive signals from an ulnar, a median, radial and posterior tibial nerve. The simulation and signal collection can be performed on a continuous basis for time periods of interest such as a given perioperative time period using a monitoring device.

A system and method for therapeutic electrical stimulation of a wrist. A flexible band is secured around the wrist. The flexible band supports an electrode carrier, including a set of electrodes, one of which is in physical contact with a dorsal side of the wrist and a second of which is in physical contact with a ventral side of the wrist. A stimulation module is in electrical communication with the electrode carrier and includes signal generation circuitry that generates an electrical stimulation signal as a direct current pulse at a frequency between 10 kHz and 50 kHz. Control circuitry sequentially activates different subsets of electrodes to act as a signal source or a signal sink for the electrical stimulation signal. The electrodes are configured to deliver electrical stimuli to the arm or wrist for exciting a median, radial or ulnar nerve.

The invention discloses a vertebral-based nerve ablation device. The vertebral-based nerve ablation device comprises a puncture assembly, a cannula assembly and an ablation assembly. Wherein the cannula assembly is detachably connected to the puncture assembly, the cannula assembly comprises a filling tube, a filling tube fixing piece, an adjusting handle and a matched limiting piece, the filling tube is fixedly connected to the filling tube fixing piece, and a lining core is arranged in the filling tube; the adjusting handle comprises a withdrawing handle and a lining core handle, the withdrawing handle is in threaded connection with the filling pipe fixing piece, and the lining core handle is fixedly connected with the lining core; the matching limiting piece is rotatably connected to the adjusting handle, and the sleeve assembly is detachably connected to the puncture assembly through the matching limiting piece. The ablation assembly comprises an ablation electrode and an electrode handle, the ablation electrode penetrates through the filling tube, and the electrode handle is rotatably connected to the sleeve assembly. The ablation device solves the problems that the long-term conservative treatment effect of chronic lumbago is poor, and when chronic lumbago is treated through methods such as repeated attack, invasive treatment and the like, stiffness of the waist and the back of a patient is likely to happen, and movement of the patient is limited.

At least partial function of a human limb is restored by surgically removing at least a portion of an injured or diseased human limb from a surgical site of an individual and transplanting a selected muscle into the remaining biological body of the individual, followed by contacting the transplanted selected muscle, or an associated nerve, with an electrode, to thereby control a device, such as a prosthetic limb, linked to the electrode. Simulating proprioceptive sensory feedback from a device includes mechanically linking at least one pair of agonist and antagonist muscles, wherein a nerve innervates each muscle, and supporting each pair with a support, whereby contraction of the agonist muscle of each pair will cause extension of the paired antagonist muscle. An electrode is implanted in a muscle of each pair and electrically connected to a motor controller of the device, thereby simulating proprioceptive sensory feedback from the device.

A finger orthosis comprises a sheath worn outside a palm, an orthosis support and a joint support. The joint support comprises a connecting arm and a suspension arm, the suspension arm is arranged on the connecting arm so that the connecting arm can be suspended, the correcting support is movably connected with the connecting arm, and the fixing base is locked after the correcting support axially moves along the connecting arm according to the length of the phalanx or the correcting stress position. And the traction mechanism is assembled with the sheath and is arranged on the back of the hand. The traction piece is in contact with the joint supports, one end of the traction piece is fixed to the joint support at the far end of the finger, the other end of the traction piece is arranged on the traction base, acting force is applied to the traction piece, the relaxation state of the traction piece is adjusted, and the finger with flexor tendon contracture is corrected. Compared with an existing fixing support, the finger orthosis provided by the invention has the advantages that the operation intensity and operation time consumption are obviously reduced, the articular surface is not damaged, subcutaneous blood vessels and nerves of fingers are not easily damaged, and the risk of disability caused by bleeding and nerve touch is reduced or avoided.

The invention provides a multi-spine structure segmentation method and system based on a CT image, and belongs to the technical field of medical image segmentation. A to-be-segmented CT image and a plurality of historical CT images are acquired and preprocessed; inputting the historical CT image into the deep neural network for training; inputting a CT image to be segmented into the trained deep neural network, wherein the deep neural network is composed of a bone tissue segmentation network and a soft tissue enhancement network; extracting centrum features of the CT image by using a bone tissue segmentation network to obtain a centrum segmentation image; segmenting a soft tissue structure of the CT image by using a soft tissue enhanced network to obtain an intervertebral disc segmentation image and a nerve segmentation image; and integrating the vertebral body segmentation image, the intervertebral disc segmentation image and the nerve segmentation image to obtain a complete lumbar vertebra structure segmentation image. According to the method, the vertebral body, the intervertebral disc and the nerve in the spine CT image can be efficiently and automatically segmented at the same time.

Described herein are various implementations of systems and methods for treating back pain (e.g., chronic low back pain) caused by different (e.g., independent) sources of pain, such as pain originating or stemming from intervertebral discs, from vertebral endplates, and / or from intraosseous locations within one or more vertebral bodies. For example, methods for treating back pain (e.g., chronic low back pain) may involve both vertebral fusion (e.g., arthrodesis or spondylodesis to fuse adjacent vertebrae) and neuromodulation (for example, ablation of nerves within or surrounding one or more of the adjacent vertebrae). The neuromodulation may facilitate treatment of pain that is generated by insertion of fusion hardware.

Described herein are various implementations of systems and methods for controllably accessing and modulating tissue (for example, systems and methods for accessing and ablating nerves or other tissue within or surrounding a vertebral body to treat chronic low back pain).

The invention discloses a simulated training device for bending and setting a human forearm bone, and relates to the technical field of limb rehabilitation training, the simulated training device comprises a forearm extension plate and a big arm extension plate which are respectively extended and fixed at the end parts of a forearm sheath and a big arm sheath, and the simulated training device realizes passive bending and stretching between a big arm and a small arm through force generated by other positions of a patient; according to the analysis from the neural reaction level, the time of triggering a pain protection mechanism at a wound of a patient is prolonged by utilizing passive power generation of an organism (because the thinking of the patient stays at the wound all the time when the patient autonomously generates power, the brain is in a reaction waiting state, and the patient can immediately make a response once feeling pain occurs; and the brain of the patient is not in a waiting state during passive power generation, and the patient cannot quickly respond even if the patient feels painful, so that the protection reaction time is delayed to a certain extent, and even if the final body still makes a deliberate terminating action, the large and small arms are bent and stretched in a prolonged time).

The conduit carrier includes a carrier housing that includes first and second contact ends and a vacuum channel extending between them. The vacuum channel is configured to connect to a vacuum source via the first contact end. An engagement mechanism is connected to the second contact end. The engagement mechanism is configured to engage with the conduit in a releasable manner during nerve repair surgery. A separator is configured to extend from the second contact end. When the engagement mechanism engages with the conduit during nerve repair surgery, the vacuum channel is connected to a vacuum port in the conduit via the second contact end so that a vacuum source can draw a vacuum into the conduit, and the separator extends into the conduit through the vacuum port, creating a predetermined regeneration gap between the first and second nerve stumps inserted into the conduit.

The invention relates to the technical field of mechanical arm control methods, and discloses a muscle force evaluation and self-adaptive control method for a household remote control upper limb intelligent rehabilitation mechanical arm, which comprises the following steps: initializing a system, guiding the first elbow flexion by voice, and judging the anti-gravity capability according to an elbow joint flexion angle. Secondary elbow bending is carried out after different reverse resistances are applied, the resistance resistance is judged according to the elbow joint bending angle, a scale is converted into clinical muscle force classification, a main control board calculates self-adaptive traction force and realizes closed-loop control, meanwhile, whole-course data are uploaded to a cloud side, and remote terminal monitoring and parameter adjustment are supported; according to the invention, the evaluation logic conforms to the clinical standard, the detection precision is high, the system integration level is good, quantitative muscle force evaluation, individualized adaptive training and remote professional supervision can be realized, the system is suitable for household upper limb rehabilitation of stroke, nerve injury and postoperative patients, and the technical problems of inaccurate evaluation, fixed control and lack of remote management of existing equipment are effectively solved.

The present disclosure relates to methods of treating nerve injuries. In particular, the present disclosure relates to methods of repairing severed peripheral nerves in a subject as well as reducing pain and increasing protective sensation.

The apparatus comprises a surgical navigation system 1, a cryogenic surgical intervention device 11 adapted to cryoneurolyse the nerve 2 and a detector 5 configured to detect a position of the interve

Provided are devices, systems, and methods for treating or preventing heart failure or a symptom of heart failure through coordinated nerve activity interruption for one or more target nerves. Devices disclosed herein may comprise a vascular catheter comprising a telescopic needle assembly configured to puncture vascular tissue in contact with the catheter, wherein the needle assembly comprises one or more electrodes configured to deliver electrical energy to a tissue in contact with the one or more electrodes. Methods may include treating or preventing heart failure or a symptom of heart failure by inserting a catheter into a vascular tissue of the subject; guiding the catheter towards the greater splanchnic nerve; piercing the vascular tissue of the subject with a telescopic needle assembly extending outwards from the catheter towards the target nerve; and ablating the target nerve by delivering a stimulation energy to the target nerve with one or more electrodes.

This invention provides a method and device for displaying muscle tissue morphology based on a digital twin of the levator scapulae muscle. The method includes acquiring static magnetic resonance imaging data of the target user's shoulder and neck region, multi-angle dynamic optical motion capture data, and surface electromyography (EMG) signals of the target muscle group to construct multimodal physiological data of the levator scapulae muscle. Based on the static magnetic resonance imaging data, a static anatomical base model of the levator scapulae muscle is constructed using image segmentation and 3D reconstruction techniques. According to the multi-angle dynamic optical motion capture data and EMG signals, the activation sequence and corresponding activation intensity of the target nerve driving the contraction of the levator scapulae muscle under different movements are calculated. Based on the activation sequence and corresponding activation intensity of the target nerve, the static anatomical base model of the levator scapulae muscle is embedded into a pre-trained digital twin model of the levator scapulae muscle to obtain a target digital twin of the levator scapulae muscle. The input motion command is input into the target digital twin of the levator scapulae muscle, and the muscle tissue morphology results are output and displayed.

An intravascular catheter for nerve activity ablation and / or sensing includes one or more needles advanced through supported guide tubes (needle guiding elements) which expand to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the extra-luminal tissue including the media, adventitia and periadvential space. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. Electrodes at the distal ends of the guide tubes allow sensing of nerve activity before and after attempted renal denervation. In a combination embodiment ablative energy or fluid is delivered to ablate nerves outside of the media.

The invention relates to an intervertebral disc annulus fiber opening tool for intervertebral fusion surgery, which effectively solves the problem that when the annulus fiber of the intervertebral disc is cut, nerve roots and spinal cord dura mater are easily damaged, thereby causing serious consequences. The lower end of the handle is connected to a side wall of a sleeve to form a hook-shaped structure, a through hole is provided in the center of the sleeve, and a side wall where the sleeve and the handle are connected is an arc-shaped side wall that is convex toward the center of the sleeve, the upper and lower sides of the arc-shaped side wall are both horizontal straight lines, and the left and right sides are curved in an arc shape, a knife body is installed in the through hole in the center of the sleeve from top to bottom, the knife body is composed of a handheld part and a knife head, the lower end of the handheld part is connected to the knife head, the knife head is an isosceles triangle arc with a tip downward, and both sides of the isosceles triangle arc are blades. The invention is easy to use, has good effect, saves time and labor, is easy to operate, and greatly improves the safety of surgical operation.

The invention belongs to the technical field of traditional Chinese medicine treatment, and discloses a method for treating knee joint diseases through a thigh medial oblique puncture method based on meridian differentiation, which comprises the following steps: step 1, performing acupuncture by adopting a 15-30-degree oblique puncture method with the height consistent with that of thigh medial muscle group fibers; 2, using a disposable sterile small needle knife with the specification of 0.5 mm * 75 mm as a needling instrument; 3, 2-3 short-range treatment cycles are set, a puncture part is positioned and disinfected firstly, and lesion areas such as medial femoral muscle deep fascia are accurately found; then a 0.5 mm * 75 mm blunt-end small needle knife is selected, and the 75 mm length can directly reach the deep lesion area of the knee joint from the inner side surface layer of the thigh. When the needle is inserted, a 15-30-degree oblique needling method is adopted, and the angle and the trend of muscle fibers on the inner side of the thigh completely go deep along muscle fiber gaps and easily penetrate into a deep layer. The 0.3 mm blunt end of the needle tip can be slightly pushed away instead of being scratched when encountering blood vessels and nerves. Finally, through 2-3 times of centralized treatment, the diseased region is stimulated for multiple times in a short time, the self-repairing ability of the body is quickly activated, adhesion tissues around the knee joint are loosened, inflammation is eliminated, blood circulation is accelerated, and actual application and operation are facilitated.

The embodiment of the invention discloses an implantable nerve stimulation electrode and an implantable hypoglossal nerve stimulation system. The implantable nerve stimulation electrode comprises a base, a first rolling arm, a second rolling arm and a skeleton. A stimulation contact is arranged on the inner side of the base, the first rolling arm is curled and extends from one end of the base and is matched with the base to form a sleeve hole, the second rolling arm is curled and extends from the other end of the base and wraps the outer side of the first rolling arm, and the framework comprises a first framework arranged in the first rolling arm and a second framework arranged in the second rolling arm. The rigidity of the first framework is larger than that of the first rolling arm. The rigidity of the second framework is larger than that of the second rolling arm. Therefore, through the arrangement of the skeleton, the whole structure of the implantable nerve stimulation electrode is rigid inside and soft outside, the thickness, the implant size and foreign body sensation can be reduced under the condition of maintaining the function and performance requirements, and meanwhile, the implantable nerve stimulation electrode is also beneficial to improving the restoring force and enhancing the coating and fixing effects on a target nerve.

The utility model discloses a thoracocentesis auxiliary device for opening intercostal space, and belongs to the technical field of puncture position restraint. According to the thoracocentesis auxiliary device capable of opening the intercostal space, the three independent air bags are arranged, and the supporting depths of the three air bags are adjustable, so that the thoracocentesis auxiliary device capable of opening the intercostal space can be adaptively adjusted when different patients are supported; different supporting depths can be adjusted according to the body size of a patient, effective supporting of the chest and the abdomen of the patient is achieved, it is guaranteed that the patient is in a comfortable state in the puncture process, meanwhile, the intercostal space of the patient can be further opened through supporting, the medical thoracic cavity standard puncture dorsal arch body position is met, and puncture safety is guaranteed; the problems that an existing puncture auxiliary device is poor in fitness, the dorsal arch body position is not standard, intercostal blood vessels and nerves are prone to being damaged, and a patient falls down after pleural reaction, and secondary injuries are caused are solved.

An intravascular catheter for nerve activity ablation and / or sensing includes one or more needles advanced through supported guide tubes (needle guiding elements) which expand to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the extra-luminal tissue including the media, adventitia and periadvential space. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. Electrodes at the distal ends of the guide tubes allow sensing of nerve activity before and after attempted renal denervation. In a combination embodiment ablative energy or fluid is delivered to ablate nerves outside of the media.

The utility model relates to a wound binding and fixing device for urinary surgery nursing. The wound binding and fixing device comprises a first supporting structure (1); the second supporting structure (2) and the first supporting structure (1) are arranged on the same horizontal line; the fixing structure (3) is arranged at the top end of the first supporting structure (1) and the top end of the second supporting structure (2) and matched with the first supporting structure (1) and the second supporting structure (2) to form size-adjustable locking rings. The first support structure (1) and the second support structure (2) are reciprocally movable relative to each other. According to the scheme, two thighs of a patient can be effectively positioned, the problem of thigh dislocation caused by nerve reflex can be effectively solved in the binding process, the binding process is stable and smooth, and postoperative rehabilitation of the patient is facilitated.

Disclosed herein are systems and methods for planning a knee arthroplasty procedure. In one example, a surgical method includes intraoperative measurement of patient anatomical information of the knee and / or movement of the knee of a patient resulting from electrical stimulation of nerves or muscles to cause articulation of the knee. An electrical stimulation system may be attached to a patient to cause contraction / relaxing of muscles operative to cause articulation of the knee. Tracking elements may be associated with relevant knee anatomical structures, such as the proximal tibia, the distal femur, and / or the patella to track the movement of the knee components resulting from the electrical stimulation. Implant components may be selected, positioned, and / or orientated using the tracking information resulting from the electrical stimulation, thereby allowing for determination of a surgical plan based on intraoperative muscle-activated knee articulation, configured to emulate natural patient anatomy and kinematics.

The invention provides a wrist closed-loop peripheral nerve electrical stimulation method and system, and relates to the technical field of nerve regulation and wearable medical instruments.The method comprises the steps that physiological signals and wearing state information of the radial styloid process, the ulna styloid process and the wrist transverse grain midpoint of the wrist are obtained, and the reference range and the dynamic calibration boundary of stimulation parameters are obtained; based on the reference range and the dynamic calibration boundary, determining a structural relationship according to the position data of the radial styloid process, the ulna styloid process and the wrist cross grain midpoint of the wrist, and performing regional characteristic analysis on the structural relationship to obtain an analysis result; and calculating geometric characteristics in the regional characteristic analysis result to obtain a geometric moment quantification result of the region. According to the invention, an individual parameter setting, closed-loop online updating and long-term maintainable engineering system is realized.

A wearable device for providing sensory feedback in an extended reality environment is disclosed. The device includes a band configured to enclose an anatomical location, such as a wrist, adjacent to a distal extremity, such as a hand. The band houses a plurality of electrodes that deliver transcutaneous electrical nerve stimulation (TENS) to the distal extremity, eliciting distally referred sensations corresponding to the user's interaction with a digital object. A controller receives sensor signals indicative of movement of the distal extremity, determines the user's motor intent, and generates a sensory feedback signal to control the delivery of TENS pulses. The device allows for anatomically congruent sensory feedback in augmented reality environments without inhibiting natural interactions with physical objects.

An adaptor for anchoring wire lead components of electrical nerve stimulation assemblies, the adaptor incorporating a left jaw; the adaptor further incorporating a right jaw; the adaptor further incorporating a left arm having a proximal end, a distal end, and a right side; the adaptor further incorporating a right arm; the adaptor further incorporating an upper left channel opening rightwardly; the adaptor further incorporating an upper right channel opening leftwardly; the adaptor further incorporating a lower left channel opening rightwardly; the adaptor further incorporating a lower right channel opening leftwardly; and the adaptor further incorporating a hinge which is fixedly attached to or formed wholly with the proximal ends of the left arm, the right arm, the left jaw, and the right jaw.

The present invention relates to a tibial sensor pin insertion guide for robotic total knee arthroplasty and, in particular, comprises: a tibial contact part configured such that the bottom surface contacting the medial slope of the tibia is inclined upward at an angle of 30-40 degrees on both sides with respect to a center line; and a first pin insertion tube formed to penetrate the posterior side of the tibial contact part and to be inclined upward at an angle of 45-55 degrees with respect to the longitudinal direction of the tibial contact part. The present invention has the effect of preventing the sensor pin inserted into the tibia to mount a sensor during robotic total knee arthroplasty from damaging the peroneal nerve passing through the outer side of the tibia during the insertion process.

The utility model relates to the technical field of medical equipment, in particular to a guide device for assisting in imbedding a locking screw, which is characterized by comprising an inner sleeve, an outer sleeve and a guider, a guide groove is arranged on the guider, and the guide groove penetrates through two ends of the guider; a second threaded hole is formed in the position, located on one side of the guide groove, of the guider, and the guide groove and the second threaded hole are perpendicular to each other and communicate with each other. The outer sleeve is arranged in the guide groove and can move in the length direction of the guide groove, and the inner sleeve is sleeved with the outer sleeve in a sliding mode. The guider is made of a titanium alloy material with strong plasticity, is simple and convenient, is low in manufacturing price, is light in weight, is convenient to operate in an operation, and can be repeatedly used after being disinfected; the purpose of minimally invasive surgery is achieved through the guider, blood supply of bones at the fracture end and surrounding muscles of the bones is not damaged, bleeding in the surgery is little, and the probability of injury to nerves and blood vessels of limbs is small.