47 results about "Implant size" patented technology

A system for virtually planning a size and position of a prosthetic implant for a bone on a patient includes a database containing pre-defined form factor information for a plurality of different implants and a circuit for obtaining surface shape information of the bone. The system further includes a circuit for defining baseline location parameters for an implant location in relation to a virtual representation of the bone based on the surface shape information and a circuit for assessing a fit calculation of each implant in relation to the virtual representation of the bone based on the form factor in formation and a plurality of fit factors at each of a plurality of incremental positions in relation to the bone. Still further, the system includes a circuit for selecting a best fit implant size and position from all of the fit calculations.

A system for monitoring blood pressure and other physiologic parameters is provided. The system is designed such that it can be delivered to the patient with ease and minimal invasion. The system contains at least one self contained implantable sensing device consisting of a sensor, an electrical circuit for signal conditioning and magnetic telemetry, a biocompatible outer surface and seal, an anchoring method, and an external readout device. The implant is small in size so that it may be delivered to the desired location and implanted using a catheter, although direct surgical implantation is also possible. The circuit, sensor, and antenna for telemetry are packaged together and sealed hermetically to the biologic environment. The larger readout unit remains outside the body but proximal to the implant for minimizing communication distance.

The invention concerns an implant for replacing a vertebra at least partially, consisting of two parts adapted to be mutually connecting while enabling the adjustment of the implant total dimension, each part having an invariable dimension homologous with the implant dimensions. The parts form a screw-nut connection with each other.

Devices and methods for immobilizing adjacent vertebrae are disclosed including the utilization of one or more implants inserted between adjacent vertebrae and having protrusions thereon for substantially fixedly securing with the vertebrae. In one form, an implant may be inserted in a first orientation and then rotated to a second orientation having a larger profile. A second implant may also be inserted in the same vertebral space in the same manner. A trial spacer may be used to determine the proper implant size. In another form, an implant may be inserted already in the fusion orientation. The implants and trial spacer, as well as a spreader and/or a scraper for preparing the intervertebral space, may be inserted in the vertebral space with the same insertion tool. The inserter tool may include a threaded member for attachment with the implants or other devices.

A method and system for (semi-) automatic dental implant planning (A) is described including (a) means for creating 3D models of a tooth setup (b) and/or means for creating 3D models of parts of the jaw, (c) means for detecting zones in the jaw where implants can (or optionally cannot be placed), (d) means for detecting restorative elements in the tooth setup, (e) means for determining candidate implant dimensions, positions, orientations and configurations, (f) means for obtaining implant plans, (g) means for comparing implant plans to each other or to given criteria, (h) means for selecting or improving an implant plan.

A hybrid method for dental implant treatment planning and a corresponding approach to make a surgical guide. After digital treatment planning is performed with CT scan data, a master model is created, which embodies the patient anatomy and entire treatment plan. Jaw bone, tooth surfaces, soft tissues and nerves are all contained by the master model. The plan details including implant sizes and positions, surgical guide drill options, as well as the choice of a surgical kit, are all conveyed by the master model. Meanwhile, models of specially designed “implant inserts (or replicas)” are also generated, which have one end that fits into the implant holes on the master model and another end to make the surgical guide. The master model and inserts are manufactured with rapid prototyping technology. A surgical guide is later on made from them with conventional lab processes. A main characteristic of this approach is that the master model and the inserts are the physical embodiment of a virtual treatment plan. With them, the surgeons can continue the treatment planning for operations like tooth extractions and bone modifications before making the surgical guides. Therefore the treatment planning workflow is a combination of digital treatment planning and a physical model based planning, in other words, a hybrid approach. A differentiator in this invention is the generation of a closed solid model of the soft tissue, as part of the master model, from the scan data. This approach can be applied to create both bone-borne and tissue-borne surgical guides with low cost process, which is a big advantage over other approaches.

A breast implant selector system including a breast width selector for selecting breast width input information, a breast tissue type selector for selecting breast tissue type input information in response to breast width input information selected with the breast width selector, and an implant size selector for selecting implant size input information in response to the breast tissue type input information selected with the breast tissue type selector. A result indicator provides a result characterizing at least one suggested breast implant as a function of the input breast width, breast tissue type, and implant size input information.

A technique of adequately determining the position of the bone resection plane of artificial joint replacement and the size of the implant. The three-dimensional relative position relation (the three-dimensional position relation between the relation among frontal three elements and the relation among lateral three elements) among the five elements, i.e., a frontal The source of X-ray (FS), the plane (PS) to which the frontal radiograph belongs, a lateral The source of X-ray (FL), the plane (PL) to which the lateral radiograph belongs, a lateral The source of X-ray (FL), the plane (PL) to which the lateral radiograph belongs, and three-dimensional CAD data is determined (S7), shade images (IU, IL) of three dimensional CAD data on the implant are superimposed in an adequate position shown in the radiograph, and the images are displayed on a display (112) (S9, S10).

The devices and methods described herein refer to a guidewire, sometimes referred to as a K-wire, for use during varying orthopedic surgeries. The guidewire allows for the measurement of objects and distances inside the patient's body when used in tandem with x-ray or fluoroscopy imaging. Also, the devices and methods described herein act as a guide to accurately insert an instrument or implant, in the correct orientation, to the surgical site. The guidewire comprises a measurement segment that comprises one or more markers placed at known distances from the distal end of the guidewire. The markers, when used in tandem with fluoroscopy and/or x-ray imaging, provide users with a reference for measuring objects and distances inside the body. The markers can have many possible designs or configurations such as, but not limited to, visualization windows, grooves, notches, and/or material inserts.

A prosthetic spinal implant having a deployable securing mechanism that is deployable into a portion of the vertebral space for affixing the implant between the vertebrae, the securing mechanism having tactile feedback means comprising a surface for transmitting tactile feedback during deployment of the securing mechanism. A spinal implant having deployable securing means that interface with the implant to prevent the deployable securing means from retracting after deployment. An implant that utilizes its resilient properties to provide the user with tactile feedback with which the user may ascertain the position of the securing mechanism. A system and tools for sizing and implanting implants with the aforementioned characteristics.

A computer-aided pre-operative planning tool with interactive surgeon interface for total knee replacement implements a method that allows implant size selection, implant positioning, and surgical cut planes estimation (with construction of corresponding surgical jig), based upon a series of coronal, axial and sagittal image slices of a patient's leg. Limb alignment and corresponding surgical cut planes are defined based upon joint anatomical-matching analysis to minimize joint wear and restore a pre-arthritic alignment (rather than an always fully neutral alignment). Using the interface, a surgeon has the option to adjust the varus/valgus alignment within recommended bounds between the pre-arthritic and fully neutral alignments. Implant size may be selected based on a best fit to the patient's leg obtained from analysis of the images.

A system for sizing an implant for a patient pre-operatively comprises a processor unit. A non-transitory computer-readable memory may be communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for obtaining at least one radiographic patient image of at least one patient bone with a scale marker relative to the bone, the scale marker having a known geometry, setting a scale of the at least one radiographic patient image using the known geometry of the scale marker, generating a three-dimensional bone model representative of the at least one patient bone using the at least one radiographic patient image and the scale, identifying an implant size and/or an implant model using implant models and dimensions of the three-dimensional bone model based on said scale, and outputting the implant size and/or the implant model for the patient.