59 results about "Organ surface" patented technology

A medical procedure utilizes a high-intensity focused ultrasound instrument having an applicator surface, a liquid-containing bolus or expandable chamber acting as a heat sink, and a source of ultrasonic vibrations, the applicator surface being a surface of a flexible wall of the bolus, the source of ultrasonic vibrations being in operative contact with the bolus. The applicator surface is placed in contact with an organ surface of a patient, the source is energized to produce ultrasonic vibrations focused at a predetermined focal region inside the organ, and a temperature of liquid in the bolus is controlled while the applicator surface is in contact with the organ surface to control temperature elevation in tissues of the organ between the focal region and the organ surface to necrose the tissues to within a desired distance from the organ surface.

Methods and apparatus provide continuous guidance of endoscopy during a live procedure. A data-set based on 3D image data is pre-computed including reference information representative of a predefined route through a body organ to a final destination. A plurality of live real endoscopic (RE) images are displayed as an operator maneuvers an endoscope within the body organ. A registration and tracking algorithm registers the data-set to one or more of the RE images and continuously maintains the registration as the endoscope is locally maneuvered. Additional information related to the final destination is then presented enabling the endoscope operator to decide on a final maneuver for the procedure. The reference information may include 3D organ surfaces, 3D routes through an organ system, or 3D regions of interest (ROIs), as well as a virtual endoscopic (VE) image generated from the precomputed data-set. The preferred method includes the step of superimposing one or both of the 3D routes and ROIs on one or both of the RE and VE images. The 3D organ surfaces and routes may correspond to the surfaces and paths of a tracheobronchial airway tree extracted, for example, from 3D MDCT images of the chest.

A fat removal device includes a screen which includes passages through which fat can be extruded, to be cut or melted away from the surface of an internal organ. The device includes a blade to cut the fat or radiofrequency monopolar or bipolar electrodes to melt the fat, aspiration to remove the fat away from the screen and blade, irrigation to irrigate the screen and blade, and an electrocautery member to cauterize the capillary bed of the fat. Methods of using removing the fat layer from the surface of an internal body organ are also described.

An embodiment of the invention provides a method and apparatus for registering two medical images with one another. A first medical image including a representation of a biological organ of a subject or for a population is obtained and the surface of the organ is identified in the first medical image. The identified surface is then used to construct a 3D geometric surface model of the organ. The geometric model is used to derive a motion model that incorporates information on the physical material properties of the organ and external forces that cause the organ to move and deform. A second medical image including a representation of the organ of the subject (or another subject, in the case that the first medical image is an atlas image) is obtained and an alignment is determined between a first surface normal vector field for the organ surface, derived from the geometric model, and a second surface normal vector field for the organ surface, derived by filtering the second medical image. The alignment accommodates deformation of the geometric model in accordance with the motion predicted by the motion model. The first and second medical images can then be registered with one another based on said determined model-to-image vector alignment (MIVA).

A method, system and device for measurement of a blood constituent level, including a light source, a light detector proximate an organ surface, adjustable gain amplifiers, and a processor/controller connected within a processing unit operative to separate AC and DC signal components. The device may determine the level of blood constituent, may use this level for monitoring and/or to activate an alarm when the level falls outside a predetermined range, may be applied to monitoring conditions of apnea, respiratory stress, and reduced blood flow in organ regions, heart rate, jaundice, and blood flow velocity, and may be incorporated within a monitoring system.

A temperature probe for monitoring temperatures of a surface of a tissue or organ within the body of a subject includes a section with a substantially two-dimensional arrangement and a plurality of temperature sensors positioned across an area defined by the substantially two-dimensional arrangement. Such an apparatus may be used in conjunction with procedures in which thermal techniques are used to diagnose a disease state or treat diseased tissue. Specifically, a temperature probe may be used to monitor temperatures across an area of a surface of a tissue or organ located close to the treated tissue to prevent subjection of the monitored tissue or organ to potentially damaging temperatures.

Novel surgical devices for off-pump surgery are described herein. The disclosed apparatus employs a novel suction element that releasably couples to a surgical connector. In an embodiment, a surgical device comprises a suction element adapted to be releasably coupled to a surgical connector. The suction element has an opening for stabilizing said surgical connector against the surface of an organ by suction. The surgical device further comprises a flexible arm connected to the suction element. The flexible arm is capable of being fixed in a stationary position to hold the surgical connector and the organ in place. The novel suction element in combination with a flexible arm not only positions and stabilizes an organ during surgery, but also positions and stabilizes the surgical connector on the organ during a surgical procedure such as an LVAD implantation.

This invention describes the detection of atherosclerotic plaque or cancer cells by a light probe inside a blood vessel or internal to an elongate organ. In one embodiment, vessel wall is imaged by employing a scanning mechanism using one emitting and one receiving fiber, whereby light is directed at a spinning mirror, approximately normal to the vessel or elongate organ surface. The light is reflected circumferentially around the vessel or elongate organ surface as the mirror rotates and received by a low-numerical aperture (NA) fiber, which transmits it to a light detector, thereby generating a set of light amplitudes circumferentially around the vessel/elongate organ surface. Multiple rings are acquired by translating the probe within the vessel/elongate organ. In another embodiment, adding a piezoelectric transducer in proximity to the distal ends of the fibers permits simultaneous ultrasound and light images to be created.

A system and method for using pre-procedural images for registration for image-guided therapy (IGT), also referred to as image-guided intervention (IGI), in percutaneous surgical application. Pseudo-features and patient abdomen and organ surfaces are used for registration and to establish the relationship needed for guidance. Three-dimensional visualizations of the vasculature, tumor(s), and organs may be generated for enhanced guidance information. The invention facilitates extensive pre-procedural planning, thereby significantly reducing procedural times. It also minimizes the patient exposure to radiation.

A method for segmenting organs in digitized medical images includes providing a set of segmented training images of an organ, computing a surface mesh having a plurality of mesh cells that approximates a border of the organ, extracting positive examples of all mesh cells and negative examples in the neighborhood of each mesh cell which do not belong to the organ surface, training from the positive examples and negative examples a plurality of classifiers for outputting a probability of a point being a center of a particular mesh cell, computing an active shape model using a subset of center points in the mesh cells, generating a new shape by iteratively deforming the active shape model to fit a test image, and using the classifiers to calculate a probability of each center point of the new shape being a center of a mesh cell which the classifier was trained to recognize.

Surgical methods and apparatus for positioning diagnostic an therapeutic elements on the epicardium or other organ surface. The apparatus include a relatively short shaft and an adjustable loop structure that supports

The invention discloses an augmented reality surgery navigation method based on video superposing, a system and electronic equipment. The method comprises the steps of acquiring a preoperative three-dimensional anatomical model of a target tissue organ; according to laparoscope video information which is acquired by a three-dimensional laparoscope in the surgery, constructing point cloud data on the surface of the target tissue organ; registering the preoperative three-dimensional model and the point cloud data, according to a registering result, obtaining a target transforming relation between the preoperative three-dimensional anatomical model and the point cloud data which correspond with a current laparoscope view; and according to the target transforming relation, superposing and displaying the preoperative three-dimensional anatomical model on the laparoscope view through augmented reality technology. Therefore fully automatic non-rigid registering can be realized without artificial manual intervention. Furthermore no any marking point or external tracking equipment is required. Augmented reality displaying of the visual field in the surgery can be finished in a standard clinical surgery process, and furthermore real-time navigation of the whole surgery process is finished through image tracking technology, thereby realizing imaging guiding of a doctor in surgery.

The present invention provides improved methods, systems, and kits for protecting body tissues which are adjacent to tissues undergoing thermal treatment. Thermal treatment is often prescribed for tumors and other disease conditions within body organs and other tissue masses. The methods, systems, and kits are particularly useful for treating tumors which lie at or near the surface of an organ, such as the kidney, pancreas, stomach, spleen, and particularly the liver. One risk of treating such tumors is the possibility of mistargeting the tumor and penetrating a delivery cannula or portions of a treatment device beyond the surface into the adjacent tissues or organs. In the case of radiofrequency or electrosurgical treatment, healthy surrounding tissue may be directly ablated. An additional risk, present even when the tumor is correctly targeted, is the possibility of thermal damage to the surrounding, non-targeted tissue. In radiofrequency or electrosurgical treatment, heat may dissipate into surrounding tissues which are more fragile and heat sensitive than the tissue in the organ being treated, thus causing unwanted tissue damage. These risks and others may be lessened or avoided with the use of an interface shield between the target region and adjacent body tissues to shield surrounding organs and tissue from treatment effects.

The invention belongs to the design of a surface model of a medical simulation human organ and a preparation method, in particular to a preparation method for an infant cleft lip facial simulation model, which comprises the following steps: (1) collecting three-dimensional original data of faces of cleft lip illness children; (2) rebuilding digital facial models of the faces of the cleft lip illness children; (3) automatically layering and scattering model files and forming processing files; (4) automatically processing resin part models of the faces of the cleft lip illness children; (5) duplicating silastic cleft lip facial models; and (6) coloring the silastic facial models. The invention can provide a personalized customization facial simulation model which is in high consistence withthe shape, color, texture and the like of the faces of the cleft lip illness children with three age of months; the simulation model not only provides the real reference for a surgeon before operation, causes the surgeon to know fairly well during the operation, and simultaneously provides postoperative facial esthetic effects for parents of cleft lip and palate patients.

Loop structures for positioning diagnostic an therapeutic elements on the epicardium or other organ surface.

A three-dimensional image representing a patient's organ is obtained. The organ is extracted from the three-dimensional image. A treatment portion, at which desirable treatment for the organ is performed, on a surface of the organ is obtained. A pattern model including an outer surface, an inner surface having a surface form along an organ's outer surface of the organ, a guide wall connecting, along the treatment portion, the outer surface and the inner surface, and a positioning portion is generated. The positioning portion positions a predetermined imaging probe in such a manner that a tomographic image of a cross section of the organ including a target portion of the organ is imageable when the guide wall is arranged along the treatment portion on the organ.

The multiple energy radioactive source CT imaging method for realizing color organ surface mapping belongs to the field of image processing technology. The method includes first multiple energy radioactive source CT imaging to obtain original image and 3D reconstruction of the organ to be observed and diagnosed, the subsequent converting the difference of energy values obtained with the multiple energy radioactive source CT imaging near the organ into different colors, and the final endowing the colors to the surface of the organ before displaying. The present invention distinguishes different tissues based on their difference in absorbing energy rays, like that different matters absorb light of different energy to show different colors. The present invention makes it possible to simulate relatively realistic colors on the surface of organ by means of neural network method for doctor to diagnose conveniently.

The invention relates to a tumor grid organ model 3D printing method. The method particularly comprises the following steps: a cross section and a sagittal section when a human body is in a supine position are used for building crossed multiple grids on the surface of an organ, while the 3D grids are built, 3D modeling software specially adopted for original data for medical imaging (CT or MRI) picks out an organ or a tumor or a blood vessel in need of 3D printing, and building of 3D data is carried out. 3D data for the organ or the tumor or the blood vessel are built at the same time, and organ surface 3D grid data are built. The 3D data are inputted to a 3D printer for 3D model printing. According to the printed model of the invention, the tumor can be intuitively observed via a hollow organ shell and the distance between the tumor and the organ surface can be measured, a guide is provided for surgical resection, and a spatial distance between the tumor or the blood vessel inside the organ and an anatomical site on the organ surface can be directly read from the model.

The invention discloses a medical robot. The robot comprises an autonomous movement control system, an automatic infrared scanning target-seeking patient positioning and organ surface positioning system, an autonomous non-invasive inspection and detection system, a real-time video and audio interactive transmission system and an interactive transmission system which is used for integrating information and is automatically connected with a consultation center robot and a multi-party consultation robot or an expert mobile phone APP, wherein all the systems are integrated in a robot body. According to the robot, remote consultation is easy to implement, so that primary hospitals easily obtain diagnosis and treatment support and medical support of experts in large hospitals, and the problems that it is difficult, expensive and far for common people to see a doctor are solved. By means of the robot, especially the autonomous non-invasive inspection and detection system arranged in the robotbody, various non-invasive detection and inspection instruments are integrated, required examinations, detection, tests and the like can be immediately conducted near patient beds, and the robot plays an important role in timely and accurate diagnosis and treatment and rescue of critical patients.

The invention discloses a method, which can improve the bonding strength of a bag, is suitable for mass production and is applied in adding sealing reinforcement strips in the process of manufacturing an organ zipper bag. In the method, a plastic film on the front plane, the front ends of a left organ surface and a right organ surface and the sealing reinforcement strips are firstly heat-sealed together, and then concave and convex embedding zippers, the sealing reinforcement strips and a plastic film on the rear plane are heat-sealed once, so that the organ zipper bag with the sealing reinforcing rib can be simply and conveniently produced, the sealing performance of the bag is enhanced, the processing procedure for producing the whole bag is also reduced, the production cost is saved and the method is suitable for large-scale production.

The invention provides a blocking material capable of stopping bleeding, a preparation method thereof, and a blocking product capable of stopping bleeding. The blocking material comprises a matrix, and a wet state adhesive layer which is arranged on at least one surface of the matrix; the matrix comprises nonwoven fiber filament; the linear density of the nonwoven fiber filament ranges from 0.5dtex to 5dtex, and the carboxylation degree ranges from 12 to 25%; the wet state adhesive layer is obtained through contact of at least one surface with an adhesive solution; the adhesive solution contains an amino compound and a buffer solution; the amino compound is dissolved in the buffer solution. The blocking material possesses excellent adhesion performance and water adsorption performance, iscapable of realizing effective adhesion with organism surfaces or parenchyma organ surfaces, and can be degraded and absorbed; deposition in internal organs is avoided; internal organs function damageis not caused; and the blocking material is safe to be used for stopping bleeding.