42 results about "Normal anatomy" patented technology

A method of image segmentation includes receiving a set of voxels, segmenting the set of voxels into a foreground group and a background group, and classifying voxels of the foreground group as either lesion voxels or normal anatomy voxels. The method also includes blocking the normal anatomy voxels and performing a second segmentation on voxels of the background group and the lesion voxels, the second segmentation forming a stage two foreground group comprising the lesion voxels and a portion of the voxels of the background group. The method further includes classifying voxels of the stage two foreground group as either stage two lesion voxels or stage two normal anatomy voxels.

An apparatus for the correction of wall chest deformities, such as "Pectus Carinatum", comprising: a bar (10) having a flattened cross-section, having a minimum bending strength according to the values defined by ASTM F382-95, plates (20) having a slot (21) in the medium portion so as to fit the corresponding end of the bar (10) and peripheral holes (23) for securing the bone parts. The bar ends comprise planar grooves (11-11') determining the wall thickness substantially similar to the height of the slot (21) of the plate (20). The wall of the grooves (11-11') has aligned holes (13) in order to form with the respective plate (20) and by using screws (30), a fixed removable attachment that allows the axial registration of the bar (10). Method for the correction of Pectus Carinatum using said apparatus in order to achieve a normal anatomic shape of the chest wall.

An apparatus for the correction of wall chest deformities, such as “Pectus Carinatum”, comprising: a bar (10) having a flattened cross-section, having a minimum bending strength according to the values defined by ASTM F382-95, plates (20) having a slot (21) in the medium portion so as to fit the corresponding end of the bar (10) and peripheral holes (23) for securing the bone parts. The bar ends comprise planar grooves (11–11′) determining the wall thickness substantially similar to the height of the slot (21) of the plate (20). The wall of the grooves (11–11′) has aligned holes (13) in order to form with the respective plate (20) and by using screws (30), a fixed removable attachment that allows the axial registration of the bar (10). Method for the correction of Pectus Carinatum using said apparatus in order to achieve a normal anatomic shape of the chest wall.

A method of segmenting a lesion (910) from normal anatomy in a 3-dimensional image comprising the steps of: receiving an initial set of voxels (520) that are contained within the lesion to be segmented; growing a region which includes the lesion from the initial set of voxels; identifying a second set of voxels (530) on a surface of the normal anatomy; determining a surface containing the second set of voxels which demarks a boundary (540) between the lesion and the normal anatomy; and classifying voxels which are part of the lesion.

The present invention relates generally to medical methods and systems used to restore the angle of His and treat hiatal hernias and other conditions of the lower esophagus. More particularly, the present invention relates to a method and system that allows fixation of the distal esophagus and fundus of the stomach directly to the diaphragmatic crus muscle. The present invention provides a method where the diaphragmatic crus muscle is identified and precisely located from within and through the gastrointestinal lumen followed by the placement of a translumenal anchor which connects and secures the esophagus and stomach to the diaphragmatic crus muscle. This procedure reduces the hiatal hernia, restores the normal anatomy and treats conditions associated with the lower esophagus.

The present invention relates generally to medical methods and systems used to restore the angle of His and treat hiatal hernias and other conditions of the lower esophagus. More particularly, the present invention relates to a method and system that allows fixation of the distal esophagus and fundus of the stomach directly to the diaphragmatic crus muscle. The present invention provides a method where the diaphragmatic crus muscle is identified and precisely located from within and through the gastrointestinal lumen followed by the placement of a translumenal anchor which connects and secures the esophagus and stomach to the diaphragmatic crus muscle. This procedure reduces the hiatal hernia, restores the normal anatomy and treats conditions associated with the lower esophagus.

A method of segmenting a lesion (910) from normal anatomy in a 3-dimensional image comprising the steps of: receiving an initial set of voxels (520) that are contained within the lesion to be segmented; growing a region which includes the lesion from the initial set of voxels; identifying a second set of voxels (530) on a surface of the normal anatomy; determining a surface containing the second set of voxels which demarks a boundary (540) between the lesion and the normal anatomy; and classifying voxels which are part of the lesion.

A method of analyzing a lesion in a medical digital image using at least one point contained within a lesion to be analyzed includes propagating a wave-front surface from the point(s) for a plurality of steps; partitioning the wave-front surface into a plurality of wave-front parts wherein each wave-front part is associated with a different portion of the wave-front surface corresponding to a previous propagation step; and analyzing at least one feature associated with each wave-front part to classify anatomical structures associated with the lesion and normal anatomy within the medical digital image.

A method of analyzing a lesion in a medical digital image using at least one point contained within a lesion to be analyzed includes propagating a wave-front surface from the point(s) for a plurality of steps; partitioning the wave-front surface into a plurality of wave-front parts wherein each wave-front part is associated with a different portion of the wave-front surface corresponding to a previous propagation step; and analyzing at least one feature associated with each wave-front part to classify anatomical structures associated with the lesion and normal anatomy within the medical digital image.

A manufacturing method for a posterior column lag screw 3D navigation module used for acetabulum fracture comprises the following steps that A, according to simulation reestablishing, 3D reestablishing is performed according to pelvis thin layer CT scanning data of an object with the acetabulum fracture so as to obtain an original 3D reestablished model, on the basis of the original 3D reestablished model, fracture block division is performed along the fracture line, and the femur head is removed so as to obtain a fracture block separation model, and on the basis of the fracture model, a single fracture block 3D space position is adjusted to recover the normal anatomic form of the acetabulum, so that a fracture reduction model is obtained; B, according to virtual posterior column slag screw implanting simulation, on the basis of the fracture reduction model, a posterior column slag screw implanting fracture reduction model is simulated with a cylinder on the fracture reduction model; C, according to obtaining of a navigation module simulation body, the navigation module simulation body is established according to the cylinder, so that the navigation module simulation body with screw channels is obtained; D, the navigation module is obtained through 3D printing. The manufactured navigation module has the advantages that the manufacturing technology is simple, precision is high, and safety is good.

A total knee replacement prosthesis is presented whose bearing surfaces are derived from an anatomically representative femur and a modified baseline tibial surface. The contacting femoral and tibial bearing surfaces comprise the inter-condylar as well as condylar regions.

A method and system for non-invasive assessment of coronary artery stenosis is disclosed. A patient-specific real anatomical model of a diseased coronary artery of a patient is generated from medical image data of the patient. A hypothetical normal anatomical model is generated for the diseased coronary artery of the patient. Blood flow is simulated in each of the patient-specific real anatomical model of the diseased coronary and the hypothetical normal anatomical model for the diseased coronary artery. A hemodynamic index is calculated using simulated blood flow rates in the patient-specific real anatomical model of the diseased coronary and the hypothetical normal anatomical model for the diseased coronary artery. In particular, fractional flow reserve (FFR) for the diseased coronary artery is calculated as the ratio of the simulated blood flow rate in the patient-specific real anatomical model of the diseased coronary artery and the simulated blood flow rate in the hypothetical normal anatomical model for the diseased coronary artery.

The invention discloses an artificial hip joint femoral stem prosthesis. The femoral stem prosthesis comprises a femoral stem cone, a femoral neck and a femoral stem which are sequentially connected;the femoral stem comprises a femoral stem proximal end, a femoral stem body and a femoral stem distal end which are integrally formed; the femoral stem proximal end is divided into a femoral stem proximal end inner side and a femoral stem proximal end outer side according to the angle of the central angle of a cross section, and the central angle corresponding to the femoral stem proximal end inner side is 120 degrees; the taper of the femoral stem proximal end inner side decreases along the femoral stem from near to far; the taper of the femoral stem proximal end outer side is constant; the femoral stem distal end is of a cylindrical structure or a tapered structure. The artificial hip joint femoral stem prosthesis can adjust the anteversion angle of the femur to a normal anatomical position in cases of combined femoral anteversion angle variation and narrow medullary cavity, and has a good implantation effect, is simple to operate and facilitates large-scale popularization and use.

The invention discloses a device for detecting pelvic floor organ displacement and clinical characteristics. The device comprises an inflatable and deflatable pressure balloon, a pressure reading instrument, a microprocessor and a display unit, wherein the pressure balloon is a flexible long-strip-shaped hollow elastic body, the air supporting strength of the pressure balloon meets the shape maintaining requirement, at least two detection balloon cavities are formed in the pressure balloon in a distributed mode, an inflation unit is connected with the pressure balloon to be controlled to be inflated and deflated, and a pressure reading meter is connected into all the detection balloon cavities through different channels and feeds back dynamic changes of the pressure of the detection balloon cavities. The pressure and the pressure change state of the corresponding position can be used as the evaluation basis of the normal anatomical position and the clinical characteristics of the organ. The portable device provided by the invention can enter a human body to realize a function without damage, forms a local or integral pressure distribution model of an organ through pressure detection of controllable point positions, further obtains a basis of a physical examination assessment report or medical judgment, and has the advantages of small pain, convenient operation, high positioningprecision, intuitive presentation of assessment result data and the like.

A device that allows for the predictable / guided anatomic drilling of claviclular tunnels for graft, suture, or combined graft / suture reconstruction of the AC joint is provided. The device simultaneously allows for larger clavicle tunnels which permit graft passage while providing protection, via stress shielding, of the bone between and adjacent to the bone tunnels. In this way, the surgeon is able to utilize anatomically placed clavicular tunnels large enough for graft passage (which reduces the mechanical failure rate of the reconstruction and most closely replicates normal anatomy) while reducing the risk of clavicle fracture, which has plagued other “anatomic reconstruction” techniques.

A total knee replacement whose bearing surfaces are derived from an anatomically representative femur and a modified baseline tibial surface. The contacting femoral and tibial bearing surfaces comprise the inter-codylar as well as condylar regions.

The invention relates to the technical field of image processing, in particular to an ultrasonic image analysis method for evaluating postpartum pelvic floor muscle function damage, and solves the problem that in the prior art, due to the fact that muscle fiber part fracture in an ultrasonic image is similar to normal anatomical variation, normal tendon attachment is similar to ultrasonic characteristics of scars after avulsion, and the damage of the pelvic floor muscle function damage is caused. And whether the levator ani muscle is damaged is difficult to accurately judge. The method comprises the following steps: acquiring an ultrasonic image of pelvic floor muscle; the ultrasonic image comprises an image in a resting state and a dynamic image sequence in a stress state and a contraction state; determining a suspicious area in the levator ani muscle area according to the ultrasonic image; performing feature analysis on the suspicious region, and determining a texture change coefficient and a shrinkage index; the texture change coefficient is used for representing bilateral muscle symmetry, and the contraction index is used for representing a muscle contraction function; according to the texture change coefficient and the contraction index, pelvic floor muscle function damage evaluation is carried out.

The invention discloses an ultrasonic imitation body model and an ultrasonic simulation training system, the ultrasonic imitation body model comprises a transparent skin layer, the transparent skin layer is internally provided with imitation bone tissues and a plurality of supporting bodies with mechanical hardness and shapes, each supporting body is made according to each organ tissue of a human body, and each supporting body has different colors. According to the ultrasonic phantom model, the colored transparent model is adopted, doctors and medical students can be helped to visually see the interior of the ultrasonic phantom model and scan and know the specific section of the ultrasonic phantom model, and normal anatomy and malformation anatomy can be more visually known by combining the tissue structure of the ultrasonic phantom model with the two-dimensional ultrasonic image; the ultrasonic phantom model can also be applied to training learning of transluminal examination, and the application range is wide.

A method for bone regeneration and surgical planning comprising the following steps: Providing a digital dataset of a 3D image of the bones using digital X-ray, orthopantomography (OPT), computed tomography (CT), digital volume tomography (DVT) and / or magnetic resonance imaging (MRI); Identification of deviations from normal anatomy using 3D imaging; Creation of a real 3D model that corresponds to the 3D scan; Identifying deviations based on the real 3D model for planning a surgical intervention, whereby The real 3D model accurately reproduces the anatomy of the bones, including deviations within a tolerance range of ±0.05 mm. During the planning phase, the arrangement of bones and bone fragments is examined, as well as the accessibility of the bone fragments and whose removability is determined, Free-floating bone fragments that have no connection to the other bones are identified in the 3D scan before the actual 3D model is created, and In the 3D scan, appropriate spacers are incorporated between the free-floating bone fragments and the remaining bones. to hold the free-floating bone fragments.

An airway support device of the present disclosure can be attached to tracheal and / or bronchial cartilage on opposing sides of a tracheal and / or bronchial wall to pull the tracheal and / or bronchial cartilages toward each other to reconstruct and / or reshape to a normal anatomy across the membranous tracheal and / or bronchial wall and thus relieving tension across the tracheal and / or bronchial wall. The airway support device can include at least two longitudinal strips that extend longitudinally along and are attached (e.g., sutured) to the trachea and / or bronchus on opposite sides of the tracheal and / or bronchial wall. Pairs of lateral strips extending from each of the longitudinal strips can be attached to each other under tension. The tracheal and / or bronchial wall can be attached (e.g., sutured) to the lateral strips to open the airway of the trachea and / or bronchus.

A system and method for identifying abnormal medical images are disclosed. The system can be configured to receive a medical image, segment an anatomical structure from the medical image to define a segmented dataset, register the segmented dataset to a baseline dataset defining a normal anatomical structure, classify, by an abnormality classifier, whether the anatomical structure within the medical image as either abnormal or normal, wherein the abnormality classifier comprises a machine learning algorithm trained to distinguish between normal and abnormal versions of the anatomical structure in medical images, and based on whether the anatomical structure can be segmented from the medical image, whether the segmented dataset can be registered to the baseline dataset, or a classification associated with the medical image output by the abnormality classifier, flagging the medical image as either normal or abnormal.

A surface-reconfiguration implant, a method of using the surface-reconfiguration implant, and a method of implantation of the surface-reconfiguration implant that creates an articular surface between an upper portion of a humeral head and a greater tuberosity, and an undersurface of an acromion in shoulders with massive rotator cuff tears is provided. The surface-reconfiguration implant can include a body portion including at least an undersurface and an articular surface, where the undersurface is configured to interface with portions of a proximal humerus to facilitate attachment of the body portion thereto, and portions of the articular surface extend to and / and preferably beyond a normal anatomical shape of portions a humeral head and a greater tuberosity both superiorly and medially when the body portion is attached to the proximal humerus.

The invention discloses a novel degradable biological amniotic membrane composite lacrimal passage repair stent which comprises a stent body. The stent body comprises a composite inner core and an amniotic membrane tegment; the amniotic membrane tegment is wound on the composite inner core to form at least one pointed end; the composite inner core is formed by twisting at least one strand of amniotic membrane core and at least one strand of medical suture; one end of one strand of medical suture penetrates out of the pointed end. The novel degradable biological amniotic membrane composite lacrimal passage repair stent solves the key problem of smooth healing of a lacrimal ductule, has the effects of promoting repairing and healing of the mucous epithelium of a lacrimal passage, reducing scars, reducing inflammation and preventing re-adhesion, enables biological activity of the amniotic membrane to be kept and prolonged, can meet the requirement of clinical application for degrading time, enables a normal anatomy function of the lacrimal ductule to be recovered, does not need external force for extirpation and cannot cause secondary damage.

Medical devices used to assist walking by helping to support a user's weight comprise a series of elements angled with respect to each other at angles selected to honor certain normal anatomical relationships so as to provide a stable platform for supporting a user's weight while reducing injury. Optional additional elements provide cushioning and stability.

An airway support device of the present disclosure can be attached to tracheal and / or bronchial cartilage on opposing sides of a tracheal and / or bronchial wall to pull the tracheal and / or bronchial cartilages toward each other to reconstruct and / or reshape to a normal anatomy across the membranous tracheal and / or bronchial wall and thus relieving tension across the tracheal and / or bronchial wall. The airway support device can include at least two longitudinal strips that extend longitudinally along and are attached (e.g., sutured) to the trachea and / or bronchus on opposite sides of the tracheal and / or bronchial wall. Pairs of lateral strips extending from each of the longitudinal strips can be attached to each other under tension. The tracheal and / or bronchial wall can be attached (e.g., sutured) to the lateral strips to open the airway of the trachea and / or bronchus.

The invention discloses a bone destruction degree feature extraction system, which includes a joint statistical morphological model building module, a pathological morphological model matching module, and an abnormality detection and analysis module, wherein the joint statistical morphological model building module is used to construct a joint statistical morphological model, Extract specific morphological statistical features for each piece of bone; the pathological morphological model matching module is used to find a model instance closest to the pathological sample in the joint statistical morphological model, and limit the model instance to three times the standard of the average morphological model Within the difference, the influence of normal anatomical variation is eliminated, and the pathological changes are highlighted; the target information used by the abnormality detection and analysis module is the degree of osteogenesis and osteoclastion of each bone, by calculating the normal The negative distance realizes quantitative evaluation of osteoclast and osteoblast. In this way, the quantitative calculation of bone destruction evaluation indicators can be realized, and reference information can be provided for the evaluation of the position and degree of bone destruction in patients.