1848 results about "Gonial angle" patented technology

The invention provides an oral surgery positioning and navigation method and system and a storage medium, and the method comprises the steps: calibrating an implanted mobile phone to obtain a unit vector of a rotating shaft of a drill bit and a three-dimensional coordinate value of the tip of the drill bit under an optical three-dimensional coordinate system, scanning to obtain a CT three-dimensional model of a patient, and segmenting to obtain a tooth CT model and an alveolar bone CT model; generating a tooth three-dimensional point cloud according to the real-time pattern of the speckle structured light on the teeth of the patient, acquiring a matrix transformation relation between a CT three-dimensional coordinate system and an optical three-dimensional coordinate system, and performing real-time navigation on the implanted mobile phone according to the real-time point position deviation and the real-time angle deviation of the drill bit. According to the technical scheme, the matrix transformation relation between the CT three-dimensional coordinate system and the optical three-dimensional coordinate system is calculated through the tooth CT feature points and the tooth point cloud feature points, and auxiliary navigation is carried out by comparing the target position of the implant with the real-time pose of the tip of the drill bit, the direction vector of the planting path and the unit vector of the rotating shaft of the drill bit. Operation is convenient and positioning precision is high.

An orthopedic tool includes a main body and a reference member. The reference member may be configured to engage an anatomical feature of a patient, such as the patient's bone. The angle of the reference member may be adjusted using a knob.

Systems and methods for providing assistance to a surgeon during an implant surgery are disclosed. A method includes defining areas of interest in diagnostic data of a patient and defining a screw bone type based on the surgeon's input. Post defining the areas of interest, salient points are determined for the areas of interest. Successively, an XZ angle, an XY angle, and a position entry point for a screw are determined based on the salient points of the areas of interest. Successively, a maximum screw diameter and a length of the screw are determined based on the salient points. Thereafter, the screw is identified and suggested to the surgeon for usage during the implant surgery.

The invention relates to a convenient preparation tool for palatal side free gingiva and a use method thereof, the convenient preparation tool comprises a disposable handle and a head cutting device, the disposable handle is rigidly connected with the head cutting device, the head cutting device comprises a cutting module and a collecting channel, the collecting channel is arranged behind the cutting module, and the collecting channel is connected with the disposable handle. The cutting module comprises a horizontal blade and a vertical blade, the instrument can adapt to the anatomical form of the curved surface of the palate in the cutting process through the width limiting and arc design of the horizontal blade, the width is controllable, and the influence of subjectivity of an operator on the quality of a prepared graft is reduced; through height limitation of the vertical blades on the two sides, the stable cutting depth is maintained, the thickness uniformity of the graft is remarkably improved, the edge integrity of the graft is kept, the problem that the graft is broken or too thin due to angle deviation or uneven force application in traditional operation is solved, meanwhile, accidental injuries to deep vascular nerve plexus are reduced, and the survival rate of the graft is increased. And the risk of complications such as postoperative bleeding, pain and donor healing delay is reduced.

A minimally invasive ultrasonic knife head and a minimally invasive ultrasonic bone power system, the minimally invasive ultrasonic knife head comprises a knife rod and a head end, the head end is located at the front end of the knife rod, the head end is curved to the side at a certain angle, and the knurled teeth or bevel teeth are arranged on the curved part. By bending the head end, the bone tissue around the intervertebral foramen mirror can be removed, so that the operator has more operation space under the limited foramen mirror channel, and the bone removal efficiency is improved. The knurled teeth or bevel teeth are arranged on the curved part, so that the bone tissue around the intervertebral foramen mirror can be better polished or cut.

The invention discloses a joint dilator of an orthopedic knee arthroscope and a control method thereof, and relates to the technical field of medical instruments, the method comprises the following steps: acquiring a geometric center of a preset distraction range and a rotating fulcrum of the dilator, and constructing a preset Y axis according to the geometric center and the rotating fulcrum; when the spreader performs initial rotation by taking a preset Y axis as a rotation axis, the graph acquisition piece acquires an actual image contour in real time; comparing the actual image contour with the target image contour in real time; when the coincidence degree between the actual image contour and the target image contour is a second coincidence degree, the position of the preset Y axis is confirmed again according to the coincident contour between the actual image contour and the target image contour in the first coincidence degree, and an actual Y axis is set; the angle control device is combined with the actual Y axis to control the dilator, through the arrangement, it can be ensured that the dilated range of the dilator coincides with the range corresponding to the actual injury characteristic, and then the wound area of a patient is reduced.

The embodiments provide various interbody fusion spacers, or cages, for insertion between adjacent vertebrae. The cages may have integrated ratchet assemblies that allow the cage to change size and angle as needed, with little effort. The cages may have a first, insertion configuration characterized by a reduced size to facilitate insertion through a narrow access passage and into the intervertebral space. The cages may be inserted in a first, reduced size and then expanded to a second, larger size once implanted. In their second configuration, the cages are able to maintain the proper disc height and stabilize the spine by restoring sagittal balance and alignment. Additionally, the intervertebral cages are configured to be able to adjust the angle of lordosis, and can accommodate larger lordotic angles in their second, expanded configuration. Further, these cages may promote fusion to further enhance spine stability by immobilizing the adjacent vertebral bodies.

The invention provides a zygomatic and wing penetration implantation operation path selection method and device, a medium and a terminal, and the method comprises the steps: setting coordinate information of a plurality of operation path starting points and a target operation region according to the obtained whole head image information of a patient; according to the obtained coordinate information of the multiple preset anatomical points, angle ranges of the multiple preset anatomical points and the target operation area relative to the multiple operation path starting points are obtained through calculation; according to the obtained multiple preset anatomical points and the angle range of the target operation area relative to the multiple operation path starting points, the distances from the operation path to the multiple preset anatomical points are calculated; and according to the calculated distances from the operation path to the plurality of preset anatomical points, calculating to obtain an optimal operation path range and a recommended operation path range. The optimal operation path in the zygomatic and wing penetrating implanting operation process can be calculated, a doctor is assisted in safely and efficiently implementing the zygomatic bone penetrating implanting operation, and the blank of the current market is filled.

First and second tracker assemblies each having a single optical marker are secured to a bone, with the first tracker assembly also including a motion sensor. A localizer optically tracks the optical marker positions, and a pose of a tracker coordinate system (TCS) associated with the tracker assemblies according to three positional DOF and two rotational DOF is determined from the tracked marker positions. Measurements from the motion sensor are utilized to determine an angle of inclination with respect to gravity, and an orientation of the TCS according to a further rotational DOF defined about a virtual line extending between the optical markers is determined from the angle of inclination. A pose of the bone according to six DOF is then determined from the determined pose of the TCS according to three positional and two rotational DOF and the orientation of the TCS according to the further rotational DOF.

The invention relates to the technical field of medical instruments, and discloses an angle-adjustable artificial hip joint prosthesis structure which comprises a thighbone connecting assembly, an acetabulum connecting assembly and a movable part movably connected between the thighbone connecting assembly and the acetabulum connecting assembly. The thighbone connecting assembly comprises a first connecting unit fixedly connected with the movable part, a thighbone stem detachably connected to the lower end of the first connecting unit, and a connecting screw fixedly connected to the upper end of the thighbone stem and in threaded connection with the first connecting unit. The acetabulum connecting assembly comprises a second connecting unit fixedly connected with the movable part and an acetabulum fixedly connected to the second connecting unit. Stable rotating connection is achieved through the double-shaft moving part, and a traditional easily-abraded spherical surface structure is replaced; the locking assembly is matched to realize personalized angle adjustment and locking; the femoral stem can be detached and replaced, and adaptability is improved; the surface composite coating promotes osseointegration and improves biocompatibility, the overall structure stability is high, adaptability is high, and postoperative recovery is fast.

The invention relates to the technical field of information, and particularly provides a complete denture arrangement virtual simulation method and system, and the method comprises the steps: obtaining the medical record data of a user; the medical record data comprises edentulous jaw soft and hard tissue data, jaw bone data, alveolar ridge morphological parameters, jaw position relation data and facial feature data; determining an initial dental arch curve based on the medical record data; inputting the initial dental arch curve and preset aesthetic parameters into a preset deep learning model to obtain a plurality of initial tooth arrangement schemes; screening the plurality of initial tooth arrangement schemes according to tooth arrangement constraint conditions to obtain tooth arrangement schemes meeting constraints; the tooth position and angle of each tooth arrangement scheme meeting the constraint are adjusted until the preset occlusion balance condition is met, and the first tooth arrangement scheme is obtained, so that the tooth arrangement scheme efficiency of the complete dentures can be improved on the premise that the quality of the tooth arrangement scheme of the complete dentures is guaranteed.

The invention relates to a bone cement injection device for skull repair. The bone cement injection device comprises an outer sheath tube, a separate injection structure and an outer push rod, a pushing channel extending in the axial direction is formed in the outer sheath tube, the tube wall of the outer sheath tube is provided with a first hole group and a second hole group which are symmetrically distributed by 180 degrees in the circumferential direction, and each hole group comprises a plurality of via holes arranged at equal intervals in the axial direction; the two symmetrically-arranged separated injection structures are arranged corresponding to the first hole set and the second hole set respectively, each separated injection structure comprises a separated injection pipe, the separated injection pipe is inserted into the pushing channel, a perfusion channel extending in the axial direction is arranged in the separated injection pipe, the near end of the perfusion channel is through, and the far end of the perfusion channel is closed; the rigid contact pins are arranged at equal intervals in the axial direction of the separate injection pipe and penetrate through the side wall of the separate injection pipe at the same circumferential angle, and the inner end of each contact pin is communicated with the perfusion channel. The repairing block can be effectively filled with bone cement, and the effect after skull repairing is improved.

A modular retractor may include a first body portion that houses a distraction mechanism for opening and closing a first arm and a second arm. A first pivoting member may be coupled to a distal end of the first arm and a second pivoting member may be coupled to a distal end of the second arm, for example. A first pin receiving cannula may be coupled to the first pivoting member and a second pin receiving cannula may be coupled to the second pivoting member. The first and second pin receiving cannulas may receive a threaded pin therein and be independently inclinable. Various embodiments may include at least one quick connect coupler. During use, a first pin and a second pin may be secured to a first and second vertebrae for distracting and / or adjusting an angle of inclination of the first and second vertebrae.

Systems and methods for real-time navigation of reaming of an acetabulum are disclosed. A first tracking element is interfaced to a reamer. A second tracking element is interfaced at or near the acetabulum. The first tracking element can be interfaced to an outer casing surrounding a portion of the shaft of the reamer. A depth and a tilt angle of the reamer with respect to the acetabulum are determined, based on a location of the first and second tracking elements. Based on a surgical plan, the depth and the tilt angle, the volume of removed bone from the acetabulum can also be determined.

The utility model relates to the technical field of medical instruments, in particular to a pair of anti-slip rotatable bent three-blade forceps with a suction function for laparoscopic surgery, which comprises a forceps seat, blades, an opening mechanism, a forceps tube, a rotating mechanism, an inner tube, a rotating wheel, a pull rod, a pull wire, a handle and a suction tube, the blade is connected with the clamp seat through an opening mechanism, a rotating opening is formed in the head end of the clamp pipe, the clamp seat is installed on the rotating opening, the inner pipe is located in a pipe cavity of the clamp pipe, a rotating hole is formed in the tail end of the clamp pipe, the inner pipe penetrates through the rotating hole, the head end of the inner pipe is connected with the clamp seat through a rotating mechanism, and the rotating axis of the clamp seat is perpendicular to the rotating axis of the inner pipe. The utility model has the advantages that the front end of the blade is provided with the arc-shaped hook claw, so that deep pelvic tissues can be firmly grasped, and slipping can be effectively avoided; the rotating wheel is operated to adjust the angle of the clamp seat at the rotating opening through the inner pipe and the rotating mechanism, so that the traction effect of the blades is improved; a special suction channel is arranged in the forceps tube and used for sucking smoke, blood and interstitial fluid generated in the operation process.

A system for an anatomical total shoulder arthroplasty or reverse total shoulder arthroplasty can include an infinitely adjustable augment angle baseplate, an implant, a baseplate, an engagement member, and a prosthetic head. The infinitely adjustable augment angle baseplate can be configured to be secured to a first bone of a patient. The implant can be insertable into a second bone of a patient. The baseplate can be insertable into the implant and configured to be attached to the second bone of the patient. The engagement member can be couplable to either of the infinitely adjustable augment angle baseplate or the baseplate. The prosthetic head can be couplable to the other of the infinitely adjustable augment angle baseplate or the baseplate. The prosthetic head can be engageable with the engagement member to form a prosthetic joint between the first bone and the second bone.

Examples in the present disclosure relate to hand chirality estimation. Tracking data captured by one or more sensors associated with an extended reality (XR) device is processed to determine positions of a plurality of joints of a hand of a person. A reference vector is generated based on a first subset of the positions. The first subset of the positions includes positions of at least two metacarpophalangeal joints. A plurality of bending angles is determined based on at least a second subset of the positions. Each bending angle represents an angle between a respective pair of articulating bones that is measured in relation to the reference vector. An estimated chirality of the hand is identified based on the plurality of bending angles. Operation of the XR device is controlled using the estimated chirality of the hand.

The embodiment of the invention discloses femur detection information generation equipment and a computer readable medium. A particular embodiment of the device comprises: a data receiver configured to receive femur image data; the processor is configured to execute the following steps: preprocessing the femur image data; carrying out region segmentation processing on the preprocessed femur image data; generating intramedullary nail filling degree data; generating a support classification result; generating pinnacle distance data; generating neck-shaft angle data; standardized intramedullary nail filling degree data, standardized pinnacle distance data and standardized neck shaft angle data are obtained; generating femur feature information; generating thighbone detection information; a memory configured to store femur detection information; and a transmitter configured to transmit the femur detection information to a target server. According to the embodiment, the response time of the thighbone detection information generation equipment during thighbone detection can be shortened.

Systems and methods for providing assistance to a surgeon during an implant surgery are disclosed. A method includes defining areas of interest in diagnostic data of a patient and defining a screw bone type based on the surgeon's input. Post defining the areas of interest, salient points are determined for the areas of interest. Successively, an XZ angle, an XY angle, and a position entry point for a screw are determined based on the salient points of the areas of interest. Successively, a maximum screw diameter and a length of the screw are determined based on the salient points. Thereafter, the screw is identified and suggested to the surgeon for usage during the implant surgery.

The invention provides a human body posture abnormity assessment method based on a body measurement all-in-one machine, and the method comprises the steps: obtaining the video data, collected by multiple cameras, of the bending and foot touching actions of a subject, carrying out the preliminary positioning of a spine, a lumbar vertebra and thoracic vertebra transition region, and key points of legs, and extracting the coordinates of the key points; leg joint angle change is calculated according to the leg key point coordinates, if the angle change amplitude is lower than a preset threshold value, it is judged that leg flexibility is insufficient, a key point tracking strategy is adjusted, and the tracking density of a leg area is increased; according to the posture abnormity score, generating a posture abnormity report of the bending and foot touching actions of the subject, and marking specific positions of spine curvature abnormity, stiffness increase of a transition area between the lumbar vertebra and the thoracic vertebra and insufficient leg flexibility; and dynamically updating a key point tracking strategy and an attitude anomaly judgment threshold according to the action normativity score, and optimizing the accuracy and real-time performance of subsequent action evaluation.

The present invention relates to a system for determining the angle of osteotomy. The system comprises a plurality of liners, a pressure measurement apparatus and a processing module. Each liner comprises a liner body having an upper surface and a lower surface. A longitudinal distance between a slope region of each upper surface and a planar region of the upper surface gradually increases from a position near the geometric symmetry central axis of the liner to both sides of the liner, so as to define the degree of a tilt angle. The pressure measurement apparatus is used for measuring a pressure applied by each of two extremity sides of a bone joint, so as to determine a pressure difference value. The processing module is configured to determine an angle of osteotomy for the extremity sides on the basis of the tilt angles of the liners that balance the tension of the two extremity sides. The present invention restores the tension condition in a real working state of a joint before osteotomy and takes into account the balance state of the tension of soft tissue as a consideration for the angle of osteotomy, thereby effectively solving the problem of unbalanced tension between soft tissue at the inner and the outer sides of knee joints after total knee arthroplasty, and keeping the original mechanical performance of knee joints of patients after surgery.

The invention discloses a tooth arrangement system based on an occlusal separation angle. The tooth arrangement system comprises a registration program module, a left and right condylar process central point setting program module, an occlusal plane adjusting program module, an angle calculation program module, an opening and closing mouth movement program module, an automatic tooth arrangement program module, a dental arch line adjusting program module and a tooth movement program module, according to the tooth arrangement method based on the condylar axis occlusal separation angle, the ideal occlusal separation angle serves as the target to calculate the appropriate occlusal plane angle, the angle of the mandibular plane angle reaches the normal range, a doctor is assisted in formulating a better correction scheme, and the tooth arrangement accuracy is improved. The correction result is more stable, and the tooth occlusion function reaches the optimal state.

The invention relates to the technical field of computer vision and deep learning algorithm optimization, in particular to an image processing method and system based on a fusion growing point optimization algorithm and a Unet network, and the method comprises the following steps: collecting a lumbar vertebra CT image, extracting the gray value and the HU value of each pixel in the image, marking a lumbar vertebra bone region, obtaining the density information of the lumbar vertebra bone region, and obtaining the density information of the lumbar vertebra bone region; analyzing the gradient of the lumbar vertebra, segmenting the initial region, obtaining information points of the basic region from the initial region, classifying, and generating initial structural features of the lumbar vertebra; according to the invention, by collecting the lumbar vertebra CT image and extracting the gray value and the HU value of the pixel, the density information of the lumbar vertebra bone region is obtained and preliminary segmentation is carried out, the gradient change of the region can be accurately analyzed, and a reliable basis is provided for the preliminary region of the image. In the process, the deviation of the lumbar vertebra bone form is successfully corrected by dynamically adjusting the image rotation angle and analyzing the angle difference of the boundary normal, so that the consistency of the form in the subsequent processing process is ensured.

The invention relates to dental medicine. A method for restoring an individual's vertical dimension of occlusion taking into account their facial proportions consists in obtaining, from a frontal view of the patient's face, an image of the patient's temporomandibular region and of the outline of the face, and determining from the image of the temporomandibular region the presence of condylar displacement in the joint space and the direction of the displacement in relation to the centric position. The same image is used to determine the patient's vertical dimension of occlusion and to ascertain the angular deviation from the Ricketts angle of normal vertical dimension of occlusion. The lower jaw is then relocated by the amount of the ascertained deviation and in the direction of said deviation to the SNA-Pm line of an SNA-Xi-Pm intermaxillary angle. The current Gl-Sn-Pog facial convexity angle is then determined for subsequent adjustment of the relocation of the lower jaw, and a digital graphical model is obtained of the lower jaw with the condyles in the normalized position in the joint space and in relation to the normalized intermaxillary angle and facial convexity angle.

The invention relates to the technical field of surgical instruments, in particular to operating forceps for temporal-mandibular arthroscopic glide membrane chondroma surgery, which comprise a forceps head assembly, a rotating sleeve, a fixed block, an arc-shaped rod, a gas-driven unit and an adjustable elbow, the forceps head assembly is a working end of the operating forceps; the rotating sleeve is of a cylindrical structure and is fixedly arranged at the tail of the tong head assembly. The fixed block is fixedly arranged at one end of the rotating sleeve away from the tong head assembly; one end of the arc-shaped rod is fixedly connected with the fixed block, and the axis of the arc-shaped rod and the axis of the rotating sleeve are collinear; the gas driving unit is arranged on one side of the arc-shaped rod and used for driving the arc-shaped rod to rotate around the axis of the arc-shaped rod. The adjustable bent pipe is arranged on the side, away from the tong head assembly, of the rotating sleeve. The device can meet the path requirement of a complex anatomical space, can improve the lesion tissue removal efficiency through angle adjustment, greatly reduces the secondary operation frequency, and gives consideration to the operation flexibility and the removal accuracy at the same time.

The invention discloses a draw hook for orthodontics, which belongs to the technical field of orthodontics and comprises a C-shaped mounting seat, a telescopic rod is fixed on the C-shaped mounting seat, and an anti-separation head is in threaded connection with a telescopic part of the telescopic rod. A first threaded hole is formed in the end face of the telescopic part, a second threaded hole is formed in the side wall of the telescopic part, and the anti-disengaging head can be in threaded connection with the first threaded hole or the second threaded hole. The C-shaped installation base can be well attached to a cylindrical installation foundation, the installation stability of the traction hook is further improved through the design of the anti-skid lines, and horizontal sliding or angle inclination of the traction hook is prevented; the first threaded hole is formed in the end face of the telescopic part, and the second threaded hole is formed in the side wall of the telescopic part, so that the direction of the anti-disengaging head can be changed, and the traction requirements of more correction devices are met.

The invention provides an ICL postoperative arch height prediction and adjustment method and device, and the method comprises the steps: a data obtaining step: obtaining eye anatomical data of a patient, including the diameters of a short axis and a long axis of a ciliary sulcus; acquiring state data of the current implanted ICL, wherein the state data comprises a nominal size and a rotation angle in an eye; a geometric modeling and calculation step: establishing a two-dimensional geometric model of the ICL in the elliptical ciliary sulcus based on the nominal size of the ICL and the diameters of the long and short axes of the ciliary sulcus, calculating the diagonal length limited by four supporting leg points of the ICL on the model according to the rotation angle of the ICL in the eye, and further calculating the theoretical geometric arch height; and an adjustment scheme generation step: on the basis of the calculated theoretical geometric arch height, generating at least one secondary operation adjustment scheme for adjusting the actual postoperative arch height to be within a clinical ideal range, the adjustment scheme comprising rotating the current ICL to a new angle or replacing the current ICL with another ICL with a different size.

Hose clamp pliers include a first plier half, a second plier half, and a pivot member. An inner face of the first jaw portion includes a first longitudinal groove and a second longitudinal groove. Each of the first and second longitudinal grooves include a first section extending from a front end of the first jaw portion and a second section extending at an angle from the first section in a direction away from the second jaw portion. An inner face of the second jaw portion includes a third longitudinal groove and a fourth longitudinal groove. Each of the third and fourth longitudinal grooves include a first section extending from a front end of the second jaw portion and a second section extending at an angle from the first section in a direction away from the first jaw portion.

Disclosed herein is a radiotherapy apparatus comprising a radiation source coupled to a rotatable gantry, a movable subject support surface and a controller. The controller is configured to obtain a first and a second anatomical location of the patient, determine a vector using the first and second anatomical location, apply radiation from the radiation source to the first and second anatomical location and move the subject support surface to the gantry based on the angular deviation.

There is provided a tibial component comprising a tibial tray having a superior side and an inferior side, and a support member connected to the inferior side of the tibial tray, the support member having a stem portion, the stem portion including one or more fins and a first arm angled relative to a second arm. In one form, the fins have a curvature that extends away from the stem portion. In another form, the first arm defines an opening sized to receive an anchor wherein the anchor is configured to penetrate a portion of bone and the opening in the first arm. Optionally, the stem portion includes a first portion having a first cross sectional area and a second portion having a second cross sectional area wherein the first cross sectional area is larger than the second cross sectional area. The fins and arms can include rail protrusions.