Abstract: Apparatus, including: a mockup probe, having a distal end and a proximal end adapted to be held by a human operator. The apparatus further includes a mockup patient, simulating an actual patient, the mockup patient having an aperture allowing penetration of the distal end of the mockup probe into the mockup patient. The apparatus includes a force generator, coupled to the mockup probe so as to apply a force to the proximal end that can be felt by the human operator, and a system controller. The controller is configured to: track a location of the distal end during the penetration thereof into the mockup patient, access an indication of a value of contractility of a region of an organ of the actual patient corresponding to the location, and activate the force generator so that the force applied to the proximal end corresponds to the indication.

Abstract: A demonstration mannequin for simulating insertion of a catheter or other medical device into the body of a patient is disclosed. The mannequin is useful for training clinicians in the placement of a catheter into the patient's vasculature and includes the ability to provide a malposition scenario in which the catheter is deviated from an intended path within the vasculature, resulting in a simulated malposition thereof. In one embodiment, the mannequin comprises a torso body portion and a simulated vasculature disposed within the body. The simulated vasculature is accessible by a medical device, such as a catheter, which can be advanced within the simulated vasculature. The mannequin further includes at least one diversion element that selectively obstructs a portion of the simulated vasculature to block advancement of a distal end of the catheter along an intended path and instead causes diversion of the catheter, thus simulating a catheter malposition scenario.

Abstract: Devices, systems, and methods appropriate for use in combat medical training are provided. In some instances, the combat medical simulators facilitate training of common field medical techniques including tracheostomy, wound care, tourniquet use, pneumothorax, cardiopulmonary resuscitation, and/or other medical treatments. Further, the combat medical simulators have joints that provide realistic ranges of motions to enhance the realism of the training experience.

Abstract: A training adapter (28) for an automated external defibrillator (AED) (10) which provides for safe training use of any AED. The training adapter includes a circuit which ensures that any defibrillation voltage/current is shunted away from the trainee, training electrodes(26), and patient simulation equipment. The training adapter simultaneously provides to the AED a simulated patient ECG signal which causes the AED to operate as if an actual cardiac rescue were occurring, thus heightening the realism of the training experience.

Abstract: A manikin for practicing resuscitation, comprising an inflatable body (1). The inflatable body (1) is adapted to absorb compression force exerted during simulated chest compression. Preferably, the manikin also comprises a chest plate (4), the chest plate (4) acting as a pressure distributor on the inflatable body (1). The chest plate (4) being connected to the inflatable body (1) by elastic means (22). The manikin may also comprise a lung part (2), the lung part being connected to a face mask (3). The lung (2) being adapted for inflation through the mouth and/or the nose of the face mask (3). The lung (2) having a chest portion (13) positioned substantially parallel to the chest portion (5) of the inflatable body (1). The face mask (3) being positioned at a head portion (7) of the inflatable body (1).

Abstract: An artificial body wall is disclosed herein. The artificial body wall may include a first layer and a second layer. The first layer is substantially formed of a silicone rubber and includes at least one of an artificial epidermis-dermis layer or an artificial subcutaneous layer. The second layer extends along and below the first layer and is substantially formed of a silicone rubber. The second layer includes at least one of an artificial fascia layer or an artificial muscle layer. At least one of the first layer or second layer may be vascularized.

Abstract: This disclosure includes embodiments of apparatuses and methods for simulating the uterus of a human (e.g., for training medical providers to perform sonograms, amniocentesis, ultrasound-guided amniocentesis, and/or other procedures). For example, in at least some embodiments, the apparatus comprises a container with a compartment and an anterior wall that is configured to permit sonogram imaging of the compartment. In some embodiments, the apparatus comprises a container that is configured to be removably coupled to the abdomen of a live human or human model such that the compartment simulates the uterus of the human or model.

Abstract: A system and method for indicating which shoe goes upon which foot. The system includes a pair of shoes and a single image that is easily discernible by children and those with diminished capacities. The image is split into a left portion and a right portion. The image is one that children who may lack certain cognitive abilities are able to easily form the two pieces of the image into a single image, like a puzzle. The left portion of the image is placed on the left shoe and the right portion of the image is placed on the right shoe. This can be accomplished by printing the split image directly on the soles of the shoes or shoe sole inserts themselves. This provides the advantage of indicating which shoe is the left shoe and which shoe is the right shoe.

Abstract: Devices, systems, and methods appropriate for use in medical training that include materials that better mimic natural human tissue are disclosed. In one aspect a polysiloxane mixture for simulating human biological tissue, especially human breast tissue, is disclosed. In another aspect, a method of manufacturing a biological tissue phantom is disclosed. In another aspect, a human breast tissue models are disclosed. In one instances, the human breast tissue model comprises a simulated breast tissue comprising a mixture of a silicone foam and a silicone oil and a simulated skin layer covering the simulated breast tissue, where the simulated breast tissue and the simulated skin layer are sized and shaped to mimic a natural human breast. In some instances, the human breast tissue model includes at least one simulated pathological structure that simulates such pathologies as a cyst, a medullary carcinoma, a ductal carcinoma, an infiltrating scirrhus carcinoma, a lobular carcinoma, and a fibroadenoma.

Abstract: System and method for teaching a dental practitioner an appropriate pressure to apply during a dental procedure. The system includes a dental tool for use in a dental procedure and a substrate including a coating of a removable scratch-off material. The scratch-off material is adhered to the substrate so as to have an adherence strength that is specifically configured so that the scratch-off material coating is removable from the substrate by manipulating the dental tool against the scratch-off material coating upon application of a minimum threshold pressure that is substantially equal to that to be applied during a selected actual dental procedure. In this manner, an inexperienced practitioner is able to learn the appropriate magnitude of pressure to be applied during a procedure (e.g., application and burnishing of a hemostatic composition into bleeding soft tissue) in a non-threatening environment without having to actually work on a live, bleeding patient.

Abstract: A cardiovascular flow system includes: a cardiovascular model system, a pump system in fluid connection with the cardiovascular model system, and an ECG simulator in communicative connection with the pump system. The ECG simulator system is adapted to create and transmit a simulated ECG signal. The ECG simulator system uses a signal received from the pump system to adjust the simulated ECG signal transmitted from the ECG simulator system. The cardiovascular flow system further includes an injection port adapted to be placed in fluid connection with an injector to inject at least one fluid into the system.

Abstract: This invention is directed to a modular staged simulator and a process of simulating medical trauma and maladies for the purpose of training or certifying individuals including medical professionals. More specifically, this disclosure relates to ex vivo training exercises as opposed to traditional forms of training using intact cadavers, in vivo surgery on animal subjects; and supervised apprenticeship performing surgery on human subjects with trauma or maladies under the watch of a skilled medical practitioner.

Abstract: Simulator systems including a maternal simulator and a fetal simulator are provided. In some instances, the maternal simulator includes a chamber sized and shaped to receive a fetal simulator and a birthing mechanism disposed within the chamber for providing rotational and translational movement to the fetal simulator in a birthing simulation. In some instances, the fetal simulator is configured to be selectively, fixedly engaged with a locking mechanism of the maternal simulator such that the fetal simulator is not removable from the maternal simulator during the birthing simulation when fixedly engaged with the locking mechanism and the fetal simulator is removable from the maternal simulator during birthing simulation when not fixedly engaged with the locking mechanism.

Abstract: A plurality of muscle pieces includes individual muscle pieces that correspond to individual muscles in the human body. Each muscle piece may be attached to a skeleton model of the human body at a location of the muscle to which the muscle piece corresponds. Each muscle piece may be separately attached to the skeleton model. The muscle pieces may be attached to the skeleton model in one or more layers on the skeleton model. The muscle pieces may be both attached to and removed from the skeleton model during use.

Abstract: An apparatus for simulation of an anatomical structure may include a left ventricle component having an inlet port configured to receive fluid flow therethrough, an aortic arch component having an outlet port configured to receive fluid flow therethrough, an aortic annulus component attached to and disposed between the left ventricle component and the aortic arch component, and an introducer configured to receive an elongated catheter assembly therethrough. The aortic annulus component may have an inner surface including simulated stenotic nodules. The introducer may be in fluid communication with at least one of the left ventricle component and the aortic arch component.

Abstract: A system for simulating a surgical procedure, which includes a housing covering an anatomical model. The model is made up of simulated tissue supported on a base assembly that allows pivoting and rotation of the simulated tissue. The simulated tissue includes a portion that represents soft tissue, such as dermal tissue, muscle, connective tissue and the like, and a portion that represents hard tissue, such as osseous tissue. The housing includes apertures through which a surgical instrument may be inserted for simulating a procedure on the simulated tissue. Cannulas may be set within the apertures.

Abstract: Systems, methods and apparatuses for generating and using representations of individual or aggregate human medical data.

Abstract: A medical simulant applicable to training personnel in the treatment of a traumatic injury is presented. The simulant replicates the appearance of a body part and is mechanically responsive to externally applied pressure so as to mimic the response of a vascular element when a tourniquet or the like is applied to the body part. The simulant includes a compressible body, a structure, a compressible tube, and a pair of plates. The compressible body replicates an arm, a leg, or another body region. The structure replicates an injury, either penetrating or non-penetrating, and is disposed along the compressible body. The compressible tube replicates a vascular element. The plates are separately disposed within the compressible body about the compressible tube. The plates are configured to deform the compressible tube so as to interrupt flow of a liquid simulating blood therein when a compressive force is applied onto the compressible body by a tourniquet or the like.

Abstract: A tissue mimicking phantom is disclosed, in which the tissue-mimicking phantom comprises: at least an upper gelatin layer, each configured with at least a sunken area; at least a lower gelatin layer, each disposed beneath the at least one upper gelatin layer while being configured with at least a microchannel network having blood-mimicking fluid flowing therein; and at least a micro-heater. By the use of the sunken area of the at least one upper gelatin layer to simulate shapes and depths of different trauma wounds, the healing of anyone of the trauma wounds can be accessed clinically through a physical properties test while subjecting the trauma wound under different negative pressures and different dressings.

Abstract: A model or mannequin is provided for use in the field of medicine to teach anatomic body structure and demonstrate surgical procedures and techniques. The teaching model is designed as a life size replica of a female torso. The model is designed to be an anatomically correct replica including a torso portion with a fabric chest wall, symmetrical pectoralis major muscle layers that are secured to the chest wall and symmetrical breast tissue layers that are secured over the pectoralis muscle layers. Currently available breast implants are utilized by the educator to demonstrate the placement of the implants in various pockets. If necessary the breast tissue, and muscle layers can be elevated to reveal the deeper tissue layers.

Abstract: The invention relates to a simulator for training in arthroscopic surgery on a joint of a simulated patient, comprising: a data processing unit (1); viewing means (2) for viewing the simulation exercise; a working platform (12); a human anatomy model (9) with arthroscopic portals (3) through which the user inserts the simulated arthroscopic instrument (10); two haptic devices (5a, 5b) arranged around the model (9) with a mobile member (6a, 6b), the end of which is provided with a guide (8a, 8b) for guiding the instrument that is inserted into the arthroscopic portals (3) during a simulated surgical procedure, each haptic device (5a, 5b) including means for synchronization with the control unit (1) and means for determining the position and orientation of the mobile members (6a, 6b); and a simulated arthroscopic camera (7). The data processing unit (1) is configured to send simulated images, as would be seen in a real operation, from the arthroscopic camera (7) to the viewing means (2) in real time.

Abstract: A human torso phantom and its construction, wherein the phantom mimics respiratory and cardiac cycles in a human allowing acquisition of medical imaging data under conditions simulating patient cardiac and respiratory motion.

Abstract: An apparatus for analyzing a sound signal is based on an ear model for deriving, for a number of inner hair cells, an estimate for a time-varying concentration of transmitter substance inside a cleft between an inner hair cell and an associated auditory nerve from the sound signal so that an estimated inner hair cell cleft contents map over time is obtained. This map is analyzed by means of a pitch analyzer to obtain a pitch line over time, the pitch line indicating a pitch of the sound signal for respective time instants. A rhythm analyzer is operative for analyzing envelopes of estimates for selected inner hair cells, the inner hair cells being selected in accordance with the pitch line, so that segmentation instants are obtained, wherein a segmentation instant indicates an end of the preceding note or a start of a succeeding note. Thus, a human-related and reliable sound signal analysis can be obtained.

Abstract: The present invention relates to a high-fidelity three-dimensional surgical training model for demonstrating or practicing surgical techniques. The three-dimensional surgical training model simulates human tissues of the head, neck and shoulders. The three-dimensional surgical training model may comprise a wide variety of defects, including but not limited to various cutaneous defects. The present invention also relates to methods of building and utilizing a three-dimensional surgical training model.

Abstract: An infant simulator comprising a mannequin having a temperature sensor effective for sensing the environmental temperatures to which the mannequin is exposed, and a means effective for recording the sensed temperature.

Abstract: A patient simulator system for teaching patient care is provided. The system includes a patient simulator. The patient simulator includes a patient body comprising one or more simulated body portions. The one or more simulated body portions include a lung compliance simulation system in some instances. In that regard, the lung compliance system is configured to be used with an external ventilator, including positive end-expiratory pressure (PEEP) and assisted-control ventilation. In some instances, the lung compliance system includes a lung compartment, a simulated lung positioned within the lung compartment, where the lung compartment defines an available volume for the simulated lung to expand into and where the available volume for the simulated lung to expand into is adjustable to control a compliance of the simulated lung.

Abstract: Disclosed herein are dielectric properties models that are designed to enable simulated use testing by medical device companies, medical device designers, individual inventors, or any other entity interested in the performance of medical devices. These models are unique in possessing a level of correlation to dielectric properties of human or nonhuman animal tissues that allows them to be substituted for either a live animal, an animal cadaver, or a human cadaver in the testing of these devices. These models are further characterized by a similarity of geometry, individual component physical properties, and component-to-component interfacial properties with the appropriate target tissue and anatomy.

Abstract: An apparatus for simulating an image-guided procedure. The system comprises an input for receiving a three-dimensional (3D) medical image depicting an organ of a patient, a model generation unit for generating a 3D anatomical model of the organ according to the 3D medical image, and a simulating unit for simulating a planned image-guided procedure on the patient, according to the 3D anatomical model.

Abstract: A patient simulator system for teaching patient care is provided. The system includes a patient simulator. The patient simulator includes a patient body comprising one or more simulated body portions. The one or more simulated body portions include at least one simulated finger that is configured to interface with a pulse oximeter to simulate an oxygen saturation of the patient simulator. In some instances, the simulated finger is further configured to interface with the pulse oximeter to simulate a pulse rate of the patient simulator. In some embodiments, the simulated finger may be calibrated to accurately interface with a particular pulse oximeter. Methods of utilizing the patient simulator systems, including the simulated finger for interfacing with a pulse oximeter, are also provided.

Abstract: It is intended to provide an endurance test apparatus whereby the behaviors of a vessel caused by a biomechanical burden can be simulated using a relatively simple constitution so that the endurance of a medical instrument (for example, a stent or an artificial vessel after anastomosis) can be tested in a similar state to an actual vessel, and an endurance test method therefor. Namely, an endurance test apparatus (10) comprises a simulated vessel (31) made of an elastic body, first and second holding members (32, 33) respectively supporting the both ends in the axial direction of the simulated vessel (31) and making the both ends relatively rotatable and interval-adjustable, and first and second motors (14, 15) operating these holding members (32, 33). The simulated vessel (31) is supported by the first and second holding members (32, 33) in a state stretched from its inherent length under a tensile force.

Abstract: An interventional procedure simulation system includes a control unit and an interface unit, the control unit communicating with the interface unit to simulate handling of a number of nested instruments simultaneously interfaced by said interface unit and, the instruments being arranged to move and rotated independently of each other and the movements and rotations being propagated to the other instruments. The control unit further includes an instruction set having a first instruction set for handling and processing input from the user, based on the input, generating a second instruction set for controlling the interface, a first data set that has characteristics for the instruments, a second data set that has data on a body part to be stimulated, and a third instruction set for generating control signals relating to an interaction between instruments and a surrounding geometry relating to a part of the simulated body part.

Abstract: The present invention deals with a system (1) for simulating a manual interventional operation by a user (2) on a simulated body with at least two real instruments (3, 4, 5), comprising a longitudinal track (8), a plurality of carriages (9, 10, 11) moveable along said track, each carriage having clamping means (25), and means for rotating and moving longitudinally said real instrument.

Abstract: A system for preventing surgical site errors includes a ferromagnetic, dry-erase whiteboard having a pair of anatomical figures imprinted thereon. Adjacent to the anatomical figures is a text space for writing a description of a planned surgical procedure. The system further includes a plurality of color-coded magnets for securing to representative locations on the anatomical figures. Each magnet has a specific color according to the area of the body requiring surgery. A medical worker places a color-coded magnet on one of the whiteboard anatomical figures at a location corresponding to the planned surgical site. The worker writes a description of the surgical procedure on the text space using a colored marker(s) that matches the magnet color(s) and then covers the patient with an identically-colored surgical drape. A surgeon first examines the whiteboard to identify the magnet location and color, then examines the written description and color and finally examines the drape color.

Abstract: This invention relates generally to breastfeeding training and more specifically to devices comprised of a doll and chest piece used for breastfeeding training.

Abstract: A simulator for simulating treatment of biological tissue comprises a real handle with three degrees of freedom of both translation and rotation, a screen for displaying a model of the treatment area and a virtual handle, a motion detection device for detecting the three-dimensional motion of the real handle, and a computer having a simulation program that displays the virtual handle on the screen in spatial relation to the biological tissue on the basis of the motion of the real handle detected by the motion detection device. The real handle simulates a laser head that emits a laser beam for treating the biological tissue. The simulation program calculates an impinging surface of the laser beam on the biological tissue based on the spatial relation and laser parameters and calculates an energy density distribution of the laser beam within the impinging surface. The removal of tissue is displayed on the screen.

Abstract: [Problem] To provide a medical training simulation model having a display enabling training by a simulation model simulating the structure of an organism, and objective and visual recognition of the three-dimensional position of an inserted endoscope, a finger or the like in an organ or tissue.

Abstract: A system for simulating a surgical procedure that includes a housing covering an anatomical model. The model is made up of simulated tissue supported on a base assembly that allows pivoting and rotation of the simulated tissue. The simulated tissue includes a portion that represents soft tissue, such as dermal tissue, muscle, connective tissue and the like, and a portion that represents hard tissue, such as osseous tissue. The housing includes apertures through which a surgical instrument may be inserted for simulating a procedure on the simulated tissue. Cannulas may be set within the apertures.

Abstract: Techniques for delivering medical care by improving decision making skills of medical personnel who deliver the care include receiving normal data that indicates normal conditions in a patient. Abnormality data is received from an author and indicates an abnormal condition in a patient. An instance of a virtual patient is generated based on the normal data and the abnormality data. The instance describes a sufficiently comprehensive physical state of a patient having the abnormal condition to simulate clinical measurements of the patient's condition. Action data is received from a trainee who is different from the author. Action data indicates a requested action relevant to dealing with the instance. Response data is generated based on the action data and the instance. Display data is presented to the trainee based on the response data. The display data indicates information about the instance available as a result of the requested action.

Abstract: An interface device and method for interfacing instruments to a medical procedure simulation system serve to interface peripherals in the form of mock medical instruments to the medical procedure simulation system computer to enable simulation of medical procedures. The interface device includes a housing having a mock bodily region of interest to facilitate insertion of a mock instrument, such as an endoscope tube, into the interface device. The mock bodily region of interest may be pivotable to simulate various patient orientations. The instrument is engaged by a capture mechanism in order to measure rotational and translational motion of the instrument. An actuator is disposed within the interface device to provide force feedback to the instrument. The measured motion is provided to the computer system to reflect instrument motion on the display during the simulation. Alternatively, the interface device may be configured to accommodate instrument assemblies having a plurality of nested instruments (e.g.

Abstract: The present invention teaches a medical procedure training system based on a PC platform that provides multimodal education within a virtual environment. The system integrates digital video, three-dimensional modeling, and force-feedback devices for the purpose of training medical professionals medical procedures.

Abstract: A surgical simulation system for demonstrating a laparoscopic surgical instrument includes a frame defining an internal cavity for supporting an object simulative of human tissue. A wall is coupled to the frame and obstructs a view of the cavity from a surgical vantage point. The wall is constructed of three adjacent layers including an outer layer simulative of skin tissue coupled to the frame by a first fastener, an intermediate layer, and an inner layer simulative of abdominal tissue. The inner layer is coupled to the intermediate layer by a second fastener such that the inner layer is removable from the intermediate layer independently of the outer layer. At least one aperture is defined through the wall to provide entry of the endoscopic surgical instrument into the cavity. A camera captures images from within the cavity transmits the images to a monitor visible from the surgical vantage point.

Abstract: A dynamic human model is jointed and movable and provides an aid for understanding, studying, and mastering the structure of the human body. In one embodiment, the dynamic human model includes a skeleton model having a plurality of bone elements coupled together by articulating joints, and muscles attachable to the bone elements. The muscles are flexible for contracting and stretching. At least one of the muscles has one or more optical elements incorporated therein for generating a first color when the muscle is contracted and a second color when the muscle is stretched.

Abstract: A system for training a clinician in energy-based surgical techniques that advantageously does not require the simulated tissue to be electrically conductive is provided. The simulated tissue comprises at least two materials. A heat generator is configured in the shape of a medical instrument typically encountered in energy-based surgical procedures such as electrosurgery or electrocautery. The instrument delivers sufficient heat to melt at least one of the materials in order to simulate energy-based surgical techniques such as excising target material. The at least two materials are configured in the simulated tissue such that their relative thermoplasticity defines a predetermined surgical pathway of a desired clinical outcome.

Abstract: A heart compression simulation device featuring a base; a resistance means disposed on the base; and an actuator operatively connected to the resistance means. The actuator can move between at least a starting position wherein the actuator is positioned at a starting position above the base and an end position wherein the actuator is pushed down near or contacting the base. The actuator is biased in the starting position caused by the resistance means. A tear effect providing mechanism provides resistance when moving the actuator from the starting position to the end position a first time. A lock-out mechanism is adapted to disengage the tear effect providing mechanism after the actuator has been moved from the starting position to the end position such that subsequent movements of the actuator between the starting position and the end position are not hindered by the tear effect providing mechanism.

Abstract: The present subject matter relates to medical training methods and models. In one embodiment, the invention provides for devices and methods of training paracentesis procedures. In another embodiment, the subject matter provides for devices and methods of training thoracentesis procedures. In yet another embodiment, the present subject matter provides for a training methods and model for performing lumbar punctures.

Abstract: Apparatus and methods useable for simulated insertion and positioning of medical or surgical devices. The apparatus generally comprises a substantially flat structure having simulated body openings, anatomical passageways, anatomical structures and anatomical cavities formed therein. One or more windows (e.g., a transparent top panel or cover) allows the operator to observe the movement or positioning of the medical or surgical device.

Abstract: The orthopedic procedures training simulator (100) is a mannequin (102) having an internal skeletal structure (104) for simulating orthopedic injuries. The interior skeletal structure (104) includes a plurality of skeletal structures, each movable between a first position simulating normal and healthy skeletal structure and a second position simulating an orthopedic injury. Motor tensionable cables joining larger joint structures allow for simulating muscular tension affecting the ability to reduce a dislocation of the joint. Force and positional sensors are disposed within the skeletal structures, and provide information to a computer system (700) to perform and monitor simulation. A computer program reads the sensors, and controls the motor tensionable cables to simulate orthopedic injuries and responses to applied corrective procedures and medications.

Abstract: An electronic phantom and method for electronically controlling a phantom for a quantitative ultrasound device are provided. The electronic phantom includes a housing, a first transducer element within the housing configured to receive an ultrasonic signal from a quantitative ultrasound device and a second transducer element within the housing connected to the first transducer element. The second transducer element is configured to transmit a modified ultrasonic sound wave to the quantitative ultrasound device based on the received ultrasonic signal. The first and second transducer elements are positioned in a back to back configuration within the housing.

Abstract: Provided is a collagen-cellulose material containing, based on a total weight of the collagen-cellulose material: 1.0-9.0 wt. % of a collagen; 0.2-3.0 wt. % of cellulose or a derivative thereof; 0.5-6.5 wt. % of at least one acid selected from an inorganic acid, an organic acid, and mixtures thereof; and water. Also provided is a process for producing the collagen-cellulose material. Also provided is an artificial blood vessel containing the collagen-cellulose material which is in the form of a hollow tube, an artificial tissue containing the collagen-cellulose material which is in the form of a sheet, and an artificial bone containing the collagen-cellulose material which is in the form of a solid. Also provided is a medical device containing the collagen-cellulose material, as well as a process for testing phlebotomical, surgical or orthopedic instrumentation or practicing phlebotomical, surgical or orthopedic procedures using the medical device containing the collagen-cellulose material.

Abstract: A simulated tissue structure for practicing surgical techniques is provided. In particular, a realistic organ model or tissue portion for practicing the removal of a tumor or other undesired tissue followed by suturing a remnant defect as part of the same surgical procedure is provided. The simulated tissue structure includes an artificial tumor disposed between layers of elastomeric material and mounted on a simulated organ wall or tissue portion. The simulated tissue structure is modular and interchangeable. At least one of the layers includes a mesh reinforcement. A defect comprising two juxtapositioned surfaces defining a gap between the surfaces is created in the simulated tissue structure and the trainee practices tumor removal and closure of the gap by suturing in a laparoscopic environment.