38 results about "Nerve root" patented technology

This invention relates to a novel P-approach endoscopic lumbar fusion surgery method, belonging to the field of lumbar fusion surgery technology. This method addresses the high risk of nerve injury and insufficient operational precision in existing endoscopic fusion techniques by proposing an improved solution. It utilizes Kirschner wires for positioning at the inferior articular process to establish a precise entry point avoiding the nerve root pathway; a visually guided circular saw is used throughout the endoscopic procedure to construct a safe triangular working channel directly reaching the spinal canal; under full endoscopic monitoring, a unilateral approach is used for bilateral spinal canal decompression, thoroughly removing diseased tissue and scraping the endplates until punctate bleeding occurs; a bone graft cannula with a curved tip is used to precisely implant the fusion device into the anterior region of the intervertebral space, restoring intervertebral height through a self-locking structure; finally, a universal pedicle screw is percutaneously implanted for fixation. This method reduces the risk of nerve injury, improves surgical safety and efficiency, and is suitable for patients with lumbar spondylolisthesis complicated by spinal stenosis.

The application discloses a safe operation device suitable for spine minimally invasive surgery, which comprises a mirror-under power drill and an electric safety protection sleeve, wherein the handle of the mirror-under power drill and the drill are matched with the electric safety protection sleeve; the handle is connected with the drill, and the drill penetrates through the electric safety protection sleeve. The application provides a safe operation device suitable for spine minimally invasive surgery, which comprises a mirror-under power drill and a safety protection sleeve. When in use, the safety protection sleeve is directly fixed on the surface of the lamina to be removed, the mirror-under power drill can penetrate through the sleeve to complete the mirror-under grinding operation of the lamina, and the real-time lamina removal condition can be clearly seen through the end observation hole, so that the lamina is quickly removed while the nerve root is completely ensured not to be damaged.

The invention discloses a lumbar surgery AI dynamic simulation system and decision making method based on multi-modal data fusion, and belongs to the field of medical artificial intelligence, the technical scheme is that the system comprises a multi-modal data input interface, a dynamic modeling engine, a surgical decision making matrix and a three-dimensional comparison unit, and specifically, CT / MRI, electromyogram and gait mechanics data are fused; constructing a spinal canal 4D model through improved U-Net < 3 + >, and predicting a nerve root dynamic path by means of GCN-LSTM; and in combination with a lumbar stenosis type, matching an adaptive operation form, and generating a pre-operation and post-operation quantitative comparison report marked by three colors. A spinal canal-nerve-biomechanics dynamic correlation model is innovatively established, 217 L4-S1 segment anatomical variation templates are arranged in the model, and the anatomical variation adaptation rate reaches 92.3%. Clinical test results show that the operation time planned by the system is averagely shortened by 26 minutes, and the postoperative reoperation rate is reduced to 2.4%.

The nerve retractor comprises a first blade, a second blade, a first handle and a second handle, an annular plate is arranged at the near end of the first blade, the first handle is fixedly connected with the annular plate, the second blade is rotationally connected with the second handle on the annular plate, and the first handle is fixedly connected with the annular plate. The first handle and the second handle are both sleeved with handle sleeves. When the second handle gets close to the first handle, the second blade moves in the direction away from the first blade, and the through hole of the annular plate, the second blade and the first blade form a channel; the first blade is shorter than the second blade; a locking piece is arranged between the first handle and the second handle and used for locking the positions of the second handle and the first handle. The double-blade distraction structure is adopted, the problem that the force exerting direction is not easy to grasp during distraction is effectively solved, meanwhile, the working channel formed by the annular plate and the two blades is good in stability, nerve roots can be effectively distraction, and meanwhile instrument operation of a surgeon is not affected.

The present disclosure relates generally to a device and method for aiding in the repair of a dural tear. According to example embodiments, the device is placed substantially within a dural sac interior to a dural tear. The device provides a shield that prevents the underlying nerve roots (including rootlets) of the spinal cord from intruding into the torn area and prevents them from being injured during the repair procedure. The device also redirects cerebrospinal fluid from the area, which aids the surgeon in viewing the procedure site during suturing and / or repair.

The horizontal type cervical traction bed comprises a bed body, the head position of the bed body is provided with a head movable bed plate capable of sliding along an arc-shaped track, and the head movable bed plate is connected with the bed body through an arc-shaped sliding rail mechanism arranged below the head movable bed plate; the arc-shaped sliding rail mechanism can be movably adjusted according to the use requirements of a patient; a neck fixing mechanism is arranged above the head moving bed board and used for fixing the head of a patient. According to the horizontal type cervical vertebra traction bed adapting to the physiological curvature of the cervical vertebra, through the unique arc-shaped traction groove design, the natural physiological curvature of the cervical vertebra of the human body can be perfectly matched; in the traction process, traction force can be evenly distributed according to the bending shape of the cervical vertebra and accurately acts on each vertebral body, intervertebral space is effectively expanded, compression of the intervertebral disc on nerve roots and spinal cords is remarkably relieved, and compared with traditional traction equipment, the precision and effectiveness of traction treatment are greatly improved, and a more remarkable symptom relieving effect is brought to a patient.

The present invention relates to a neuromodulation / neurostimulation system (10) for the treatment of spasticity in a mammal, said system (10) comprising: —at least one control unit (12) configured and arranged to provide stimulation data, and—at least one stimulation unit (14), operatively connected to the at least one control unit (12), said at least one stimulation unit (14) being configured and arranged to deliver epidural electrical stimulation to the spinal cord of said mammal, according to said stimulation data, wherein the at least one stimulation unit (14) includes a biocompatible implantable lead (18) configured and arranged to cover at least a portion of the spinal cord of said mammal to deliver epidural electrical stimulation to the dorsal roots innervating the spastic muscles to target neuronal circuitry responsible for spastic episodes.

The invention relates to a spine intervertebral dilator which comprises a main support, a fixed supporting arm, a sliding supporting arm, a distraction blade and a control module, a biological impedance sensor array is integrated on the working surface of the distraction blade, and the biological impedance sensor array conducts real-time induction at the moment of touching nerve roots by detecting the electrophysiological characteristic difference of contact tissue; the control module receives impedance data of the biological impedance sensor array in real time, and when the biological impedance sensor array detects an impedance threshold value, the self-locking alarm module is triggered immediately and is self-locked; according to the spine intervertebral dilator, tissue electrophysiological characteristic differences are detected in real time through the integrated biological impedance sensor array, accurate recognition of nervous tissues is achieved in combination with multi-sensor fusion and a deep learning algorithm, a self-locking mechanism is triggered immediately when nerve roots are touched, and the spine intervertebral dilator is used for distraction of the nerve roots. The device has the advantages that nervous tissue is accurately recognized, real-time self-locking protection is achieved, and the risk of nerve injury in the operation is reduced.

The present disclosure is directed to devices, kits, and methods for treating lumbar spinal stenosis by at least partially decompressing a compressed nerve root. The method can include identifying the compressed nerve root and percutaneously accessing a region of a lamina located adjacent to the compressed nerve root. The method can also include forming a channel through the region of the lamina, wherein the channel can be formed medial to a lateral border of the lamina. Further, the method can include expanding the channel in a lateral direction.

A retractor, preferably a nerve root retractor, comprising three components: an upper portion, a mid-portion, and a lower portion. The nerve retractor is designed to eliminate the requirement of having a person hold the retractor tool during a surgical procedure. The nerve retractor can be secured to a portion of the anatomical structure involved with, or near, the surgical procedure site, and utilizes an actuating device which allows the user to manipulate the angle of orientation of the arm portion or anatomical structure retractor portion. The anatomical structure retractor may comprise a modular anatomical structure engaging member / head, allowing the surgeon to use multiple or differently configured structure engaging members / heads during a procedure as needed.

The invention provides an energy output control method and system based on a composite catheter. The energy output control method comprises the steps that a radio frequency electrode is pushed to the far end of the composite catheter; radio frequency energy is output to the target intervertebral disc protrusion tissue through the radio frequency electrode, so that the size of the target intervertebral disc protrusion tissue is reduced, and a cavity is formed; normal saline is injected into the cavity, and the far end of the optical fiber is pushed to the cavity through an optical fiber channel in the composite catheter; laser energy is output to the fiber ring near the cavity through the optical fiber to solidify the fiber ring near the cavity. The cavity formed by the target intervertebral disc protrusion tissue can separate the nerve root from the target intervertebral disc which is not ablated, so that the compression of the target intervertebral disc protrusion tissue on the nerve root can be obviously reduced; the heat effect of the laser can be utilized to act on the fibrous ring of the collagen, so that the fibrous ring of the collagen is shrunk and thickened, equivalently, the fibrous ring is reinforced, and the recurrence of the target intervertebral disc protrusion is effectively prevented.

The utility model discloses a kind of guiding formula arc intervertebral fusion cage sets, it includes: shaft sleeve, intervertebral fusion cage and guide needle, the shaft sleeve includes: first blocking part and second blocking part, the intervertebral fusion cage is housed in the shaft sleeve, the intervertebral fusion cage is configured to rotate radially from the shaft sleeve, the guide needle is configured to pass through the intervertebral fusion cage to guide the intervertebral fusion cage to target position, when carrying out spinal interbody fusion cage fusion, intervertebral fusion cage can be guided to the vertebral body opening of target, is implanted with the rotation to comply with the arc of vertebral body, to avoid injury surrounding nerve root or soft tissue, and reduce the opening area required for operation, reach the requirement of wound range minimization.

This utility model discloses a nerve root retractor for UBE surgery, relating to the field of auxiliary instruments for minimally invasive spinal surgery. In lumbar discectomy, there are shortcomings in the procedure where an assistant must hold a nerve retractor to retract the nerve during disc removal, which is not always secure and can easily lead to operator fatigue. Improper operation can also easily cause nerve root damage to the patient. This utility model provides a nerve root retractor for UBE surgery, including a Kirschner wire with a retractor plate near its front end and a handle at the upper end. The Kirschner wire includes a pointed portion and a straight rod portion, with the retractor plate positioned near the pointed portion of the straight rod portion. The handle includes a vertically positioned operating rod and a positioning rod, with the positioning rod aligned along the axial direction of the Kirschner wire. A positioning block is provided on the positioning rod.

The utility model discloses a treatment chair for bone setting of a rat with cervical spondylotic radiculopathy, which belongs to the technical field of medical instruments and comprises a bottom plate, a side plate is fixedly mounted on the bottom plate, a lifting component, a fixing component and an auxiliary component are arranged on the side plate, and the neck and the waist of the rat can be accurately fixed by the aid of the fixing component and the auxiliary component. The device is suitable for rats with different body types and illness states, the stability and effect in the bonesetting treatment process are ensured, the lifting assembly is arranged, the rotary lifting bonesetting technique that the head of the rat is rotated and then lifted can be achieved, and the receding sliding plate is arranged, so that the situation that the rat is hurt when the lifting force of the rat exceeds the rated force can be effectively prevented; by arranging the friction ring plate, the positions of all the arc-shaped strip blocks can be locked, the arc-shaped strip blocks are prevented from moving in the treatment process, and therefore the stability and safety of the device are improved, modular arrangement is adopted as a whole, and disassembly and maintenance are convenient.

The utility model belongs to the technical field of medical equipment, particularly relates to a working sleeve device comprising a nerve root probing hook capable of protecting and passively separating, and aims to solve the problems that the existing nerve root is easy to have pathological phenomena such as adhesion, prolapse and the like and is not beneficial to surgical operation, the following scheme is provided: the working sleeve device comprises a working sleeve main body, the working sleeve main body is composed of a connecting part main body and a front lens tube, the front lens tube is fixedly installed at one end of the connecting part main body, and the front lens tube is communicated with the interior of the connecting part main body. Stable protection and blunt separation of nerve roots in an operation are realized; due to the inclined design of the probing hook body, the nerve root separation effect is improved, and stimulation to a patient is effectively reduced; due to the design of the pushing assembly, the probing hook body can be accurately adjusted and conveniently operated, the operation accuracy is improved, the operation difficulty is reduced, and high practicability is achieved.

This invention discloses a nerve dissector with guiding function, belonging to the field of medical device technology. It includes a dissector body with a channel concentric with its center. A Kirschner wire is installed within the channel, with one end serving as the insertion end and the other as the exit end. One end of the dissector body is a hook portion with a traction section. The exit end is located below the traction section, and the insertion end is located at the end of the dissector body furthest from the hook portion. This nerve dissector with guiding function avoids the limitations of traditional nerve dissectors, which, due to design constraints, struggle to maintain a stable position after nerve root retraction. Furthermore, if the surgeon releases the dissector or during instrument changes, the nerve root may easily spring back to its original narrow position due to loss of traction, obstructing the surgical field again and increasing the difficulty and risk of the procedure.

The utility model discloses a kind of pulling distraction devices for lumbar UBE operation, it is related to medical instrument technical field, including left forceps body and right forceps body. One end of left forceps body is equipped with in-vivo extension piece, in-vivo extension piece is connected with placement part, and placement part is equipped with bone surface embedding body;Right forceps body is rotatably connected with left forceps body and can be relatively fixed, one end of right forceps body is equipped with pulling part, and pulling part is connected with distraction extension body. Among them, bone surface embedding body is located at the side of placement part away from right forceps body, and distraction extension body is set to the side away from left forceps body. The above-mentioned pulling distraction device for lumbar UBE operation, the fixed part of left forceps body is used to place in the upper vertebral plate and articular process joint medial bone surface polished by abrasive drill, and is embedded into bone surface by bone surface embedding body, and the distraction extension body of right forceps body is used to extend into ventral running nerve root, and the nerve root and dural sac can be appropriately pulled apart by the pulling part of right forceps body, expose operation visual field, without the help of assistant.

A nerve probing hook with a cutting function comprises an operating rod, a probe is arranged at the lower end of the operating rod, a probe cover plate is arranged above the probe, a cutter is arranged at the bottom of the probe cover plate, a push-pull rod penetrating through the operating rod is arranged in the operating rod, and the lower end of the push-pull rod is connected with the probe cover plate and the cutter and drives the probe cover plate and the cutter to move up and down. The utility model provides a nerve probing hook with a cutting function, which changes the single function of the nerve probing hook, so that the nerve probing hook can be used for probing and releasing nerve roots and simultaneously carrying out safe excision and dissection operation on surrounding adhesion tissues synchronously. When cutting is not needed, the device can be used as a common nerve probing hook.

The utility model discloses a new variable angle intervention puncture trocar for treating lumbar disc herniation, which comprises an inner needle, an outer needle and an angle adjusting device, the needle tip of the inner needle is a round blunt head to reduce the frictional resistance when passing through the through hole of the outer needle needle sheath; the inner needle is made of a metal material with weak hardness, the front end of the inner needle can be shaped at an angle of 0-30 degrees according to the actual needs of surgery, so that after the outer needle reaches a certain puncture position, the inner needle can be moved to a position that cannot be reached by the outer needle according to the puncture direction to perform relevant injection operations such as injection of medicine; in addition, the inner needle can also achieve physical loosening of blunt dissection of adhesion around the nerve root; the utility model has the advantages of simple structure, reasonable design, small size, light weight, convenient transportation and storage, long service life and high suitability for non-vascular intervention operation of the spine in the treatment of lumbar disc herniation.

The present invention addresses the problem of providing a medical image processing device for automatically measuring an FA value. As a solution, provided is a medical image processing device provided with: a diffusion tensor image MRI data acquisition unit that acquires diffusion tensor image MRI data obtained by imaging the lumbar region of a patient having pain in waist and lower limbs; a coordinate information estimation unit that estimates coordinate information of the nerve root in the specified axial cross-section; and a measurement unit that measures the FA value of the nerve root from which the coordinate information has been estimated.

This application relates to the field of motor reconstruction technology, specifically disclosing a closed-loop motor reconstruction system and method. The system includes an implantable signal acquisition component, an implantable controller, a non-implantable controller, and an implantable neurostimulation component. The implantable signal acquisition component and the implantable neurostimulation component are electrically connected to the implantable controller, which is also electrically connected to the non-implantable controller. The implantable signal acquisition component is configured to acquire electroencephalogram (EEG) signals. The implantable controller is configured to transmit the acquired EEG signals to the non-implantable controller and receive stimulation commands generated by the non-implantable controller based on the EEG signals, then transmit the stimulation commands to the implantable neurostimulation component. The implantable neurostimulation component is configured to parse the stimulation commands and perform electrical stimulation on the nerve roots at the target location. It requires no manual or audio control from the patient, is relatively simple to use, and is real-time, reducing computational complexity while ensuring accuracy.

The invention relates to the technical field of orthopedic medical instruments, in particular to an orthopedic spine minimally invasive surgery abrasive drill. The abrasive drill for the minimally invasive spine surgery in the orthopedics department comprises a holding handle and the like. A connecting fixing ring is fixedly connected to the left side of the holding handle, a mounting sleeve is arranged at the left end of the connecting fixing ring, a driving motor is arranged in the holding handle, a quick separating mechanism is connected to an output shaft of the driving motor, and a grinding drill rod is connected to the end, away from the driving motor, of the quick separating mechanism and penetrates through the connecting fixing ring and the mounting sleeve. A grinding head is arranged at the left end of the grinding drill rod; a chute is formed in the left side of the mounting sleeve. According to the design of the grinding protective sleeve and the elastic convex block, the grinding protective sleeve is retracted and the grinding head is wrapped by utilizing the wedged locking of the elastic convex block and the groove, so that the risk that nerve roots below and around are rubbed when the position of the grinding head deviates is effectively prevented.

The invention discloses a spinal operation comprehensive quantitative evaluation method and device based on multi-modal ultrasonic parameters, and relates to the technical field of medical ultrasonic imaging. Aiming at the problems that the existing operation decompression assessment depends on subjective experience and has an optical blind area, the method comprises the following steps: acquiring ultrasonic data such as B ultrasonic, shear wave elasticity and ultra-micro blood flow of nerve roots before and after decompression in a liquid coupling medium, and respectively calculating change characteristic quantities of morphological, histomechanical and hemodynamic dimensions; and after normalization, substituting into a weighting model constructed by an entropy weight method, and generating a comprehensive decompression score representing physical state improvement. According to the method, subjective qualitative judgment is converted into objective quantitative evaluation, anatomical reduction and deep functional recovery are cooperatively verified, blind area hidden pressed object exploration is assisted, and the objectivity and accuracy of operation end point judgment are improved.

The utility model relates to the field of medical auxiliary device, concretely relates to a kind of distraction device with nerve root retractor for endoscopy of spine, including pincer distraction component and kirschner wire, the pincer distraction component is equipped with mutually crossed articulated left jaw arm and right jaw arm, and the front end of left jaw arm and right jaw arm is equipped with sleeve and retractor respectively, kirschner wire can be fixed in the vertebral bone mass of patient's spine, and the sleeve of pincer distraction component can be sleeved on kirschner wire and can rotate around kirschner wire.The utility model is fixed and positioned by using kirschner wire fixed in the vertebral bone mass of patient's spine and using sleeve to rotate around kirschner wire moderately, the nerve root and dura mater outside spine are pulled by using retractor hook, and left jaw arm and right jaw arm are crossed articulated and are moderately distracted, so that operation visual field can be more clear, and nerve root around spine can be protected throughout, and operation risk can be reduced.

The utility model relates to the technical field of spinal endoscope, specifically disclose a kind of elastic nerve root adhesion release device under spinal endoscope, including implant sleeve and release mechanism, release mechanism includes endoscope main body, endoscope outer tube, bearing, fixed plate, rotating ring, two limit rings, first fastener, fixed assembly and gripping assembly, fixed plate is rotatably connected with implant sleeve by bearing, rotating ring is sleeved in the outside of implant sleeve, two limit rings are all sleeved in the outside of implant sleeve, fixed assembly is fixedly connected with rotating ring, first fastener is threadedly connected with rotating ring, one end of endoscope outer tube is fixedly connected with endoscope main body, the other end of endoscope outer tube is inserted to the inside of implant sleeve, and it is through fixed plate, by the above-mentioned setting, the insertion depth of endoscope outer tube is controlled, to avoid treatment, endoscope outer tube shakes displacement.

A cautery probe is provided for performing a rhizotomy through an incision in the body of a patient. The probe includes a rigid shaft that can be inserted through an incision, and a distal cutting tip that can be energized and wanded across a target nerve. In embodiments, the probe also includes connectors for attaching a syringe, drawing medication into the syringe, and dispensing medication from the syringe through the probe and adjacent the cutting tip.

The invention discloses a lumbosacral plexus nerve root analysis device and method based on magnetic resonance diffusion tensor imaging. The device comprises a segmentation module which is used for preprocessing a diffusion weighted image, cutting a to-be-segmented region, and carrying out nerve root segmentation; the fiber bundle tracking module is used for tracking the nerve root fiber bundle based on the fitting information of the automatic segmentation result and the diffusion weighted image; the visualization and fusion module is used for converting the tracking result into a world coordinate system, then carrying out three-dimensional visualization, and carrying out multi-modal fusion display on the tracking result and other magnetic resonance image sequences; and the identification and quantitative analysis module is used for identifying nerve root overlapping and fracture conditions and generating an FA value distribution curve layer by layer for each separated nerve root for quantitative analysis. According to the method, the problems of long time consumption and large individual difference of manual sketching in current clinical application are solved, the lumbosacral plexus nerve root fiber bundle visualization result can be efficiently and stably obtained, and quantitative FA analysis is provided for each nerve root.

Devices, systems, or methods include generating, by stimulation generation circuitry, a first train of electrical stimulation pulses at a first frequency to a first target tissue; and generating, by the stimulation generation circuitry, a second train of electrical stimulation pulses at a second frequency to a second target tissue different from the first target tissue, wherein at least some electrical stimulation pulses of the first train of electrical stimulation pulses are interleaved with at least some electrical stimulation pulses of the second tram of electrical stimulation pulses. At least the first target tissue is associated with a spinal cord of a patient, and the second target tissue is associated with at least one of a peripheral nerve or a nerve root of the patient.

The invention discloses a fixable half-tube nerve protection sheath under a minimally invasive spine single-side dual-channel endoscope, and provides a solution aiming at the problems that a traditional drag hook is easy to slip in a minimally invasive spine surgery and possibly causes mechanical injury to nerve roots or dural sacs. The device comprises a protective sheath part, a nervous tissue stripping drag hook part and a protective sheath fixing part. The protective sheath part guides the main sheath head and the side sheath head to the periphery of a spine to be operated through the hollow sheath body, and the main sheath head and the side sheath head form a specific included angle and are internally communicated. And the protective sheath fixing piece fixes the protective sheath on the spine skeleton by using a bone nail. The nervous tissue stripping drag hook piece controls the memory metal wire claw to stretch out and draw back by pulling the push wire, and grabbing and pulling of nervous tissue are achieved. The instrument can safely pull and protect nervous tissue in an operation, space is vacated for follow-up operation, damage to the nervous tissue is effectively avoided, and the operation safety and success rate are improved.

The invention discloses a safe fiber ring exposure device in a lumbar posterior approach operation, and belongs to the technical field of medical apparatuses and instruments. The baffle ring is placed in a lumbar vertebra posterior open surgery operation area so as to expand operation area tissue and isolate nerve roots and dural sacs. A suction pipe and a liquid injection pipe are fixedly connected to the baffle ring; the baffle ring comprises a rigid ring body; a plurality of liquid suction holes are formed in the circumferential curved surface of the inner side of the rigid ring body, a second cavity is formed between the inner side and the outer side of the rigid ring body, and the liquid suction holes are communicated with the interior of the second cavity. Compared with the prior art, the safe fiber ring exposure device in the posterior lumbar surgery can fully and safely block nerve roots and dural sacs on the periphery of a surgery operation area, so that an operator can easily and safely carry out nucleus pulposus removal and fusion cage placement operation. And meanwhile, the device can timely and completely absorb blood in an operation area, so that the view is prevented from being blocked by the blood, and great convenience is brought to operation of an operator.