Revista Ingeniería Biomédica

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Acceso abierto
Análisis biomecánico de la epifisiolisis de la cabeza femoral: comparación entre fémures sanos y enfermos
(2014-04-20) Botero-Botero, D. C. (Diana Carolina); Gómez-Benito, M. J. (María José); García-Aznar, J. M. (José Manuel ); Doblaré-Castellano, M. L. (Manuel); Barrios-Pintarque, C. (Carlos)
In this work, a finite element analysis (FEA) is accomplished to study the differences of stresses in the growth plate, that are produced in healthy and unhealthy femurs, and to evaluate the possible causes of this illness. Finite element models of 45 patients were developed. The results demonstrated a similar pattern of stresses in all the groups of femurs and also the appearance of greater stresses in the group with slipped capital femoral epiphysis than in the control group. It was also observed a strong dependency on the value of the axial-fisis angle from the group of femur analyzed and a bigger influence of the geometric factors than of the body mass index, in the incidence of the illness.
Acceso abierto
Análisis biomecánico de la esgrima mediante sistemas optoelectrónicos de análisis de movimiento. Estudio de caso: deportista de alto rendimiento
(2014-04-20) Torres-Ruiz, A. (Andrea)
This article presents the study of fencing techniques through biomechanical analysis, using optoelectronic systems that capture in real time two main gestures: advance and lunge, with the objective to digitally characterize the biomechanics, for its further kinematical analysis to describe the fencer’s technique in the movement execution. This study was made to characterize position curves, joint angles, velocity and acceleration of each of the markers located on the athlete’s body, in a quantitative manner. This study was developed on a high performance athlete in sword modality
Acceso abierto
Análisis cinemático del salto en pacientes sin patologías en extremidades inferiores
(2014-04-23) González-Cruz, C. (Catalina); Bregains, F. (Federico); Braidot, A. (Ariel)
Vertical jumping is a crucial ability in the performance of several sports such as volleyball, basketball and football. The standing vertical jump is based on several specific independent variables, where each can affect or improve the final performance. The main goal of this study was to examine the kinematic vertical jump in amateurs sportsmen without pathological antecedents in lower limbs, through two types of squat jump. The movement was analyzed using two-dimensional video system and the data were processed with the use of software developed in the laboratory. The angles among segments, positions and displacements of the center of mass and anatomical joints velocities were evaluated, in each variant of the exercise. The results obtained allow the characterization of the standing vertical jump performed by the subject and allow the comparison of both techniques as well. It was demonstrated that this technique improves performance of the vertical jump while using arm swing which leads to an increase in height of the body’s center of mass.
Acceso abierto
Análisis y clasificación del patrón respiratorio de pacientes en proceso de retirada del ventilador mecánico
(2014-04-30) Chaparro-Preciado, J. A. (Javier Alberto); Giraldo-Giraldo, B. (Beatriz )
Estimating the optimal time to remove the ventilatory support from a patient in intensive care remains essential in clinical practice. In this work we study the breathing pattern from the respiratory flow signal in the process of weaning considering the following stages: characterization of the signal from the identification of respiratory cycles, respiratory pattern analysis from mathematical modeling of the resulting series, and classification in order to identify patterns of patients with possible success in the process. We analyzed 153 patients classified into three groups: success, failure and reintubated, according to results of T-tube test. The time series for breathing duration, inspiratory time, expiratory time, and shallow breathing index that resulted in significant differences in the mean, model order, first coefficient and final error of prediction were selected. With them we obtained a classification accuracy of 86% (sensitivity 0.84 - specificity 0.86) using a linear classifier discriminate type. Other classifications were analyzed, such as logistic regression and support vector machines.
Acceso abierto
El aporte de la biomecánica y la Ingeniería en rehabilitación en la Ingeniería Biomédica de la EIA-CES
(2014-04-20) Torres-Velásquez, A. (Andrés); Díaz-León, C. A. (Christian Andrés); García-Muriel, L. F. (Luisa Fernanda); Toro-Hernandez, M. L. (María Luisa)
Acceso abierto
Apropiación social e investigación participativa en ingeniería en rehabilitación
(2014-04-30) Villa-Moreno, A. (Adriana); Correa-Restrepo, M. L. (Margarita Lucía); Acosta-Ramírez, S. (Stefanía); Guarín-Grisales, A. (Álvaro)
One of the main goals of rehabilitation engineering is improving the quality of life of people with disabilities through developing solutions for their speciﬁ c needs. When participatory methodologies for research and design are applied, the resulting solutions show advantages such as products that better address the needs of the community, solutions that are better accepted by the community, and the identiﬁ cation of potential sources and niches for innovation. In addition, participatory methodologies provide beneﬁ ts that are not only associated with the generated results and products but with the processes themselves. When research processes are inclusive and promote authentic participation a higher social impact can be obtained. This paper proposes a methodological approach for the development of habilitation and rehabilitation products that allows the convergence of participatory research tendencies, design tendencies and the voice of the community that claims for co-participation. This approach also incorporates strategies for the social appropriation of knowledge. Examples, barriers, difﬁ culties, challenges and recommendations for conducting research with a focus on participation are also presented. The reﬂ ections herein presented may also be applied to other ﬁ elds.
Acceso abierto
La asociación colombiana de bioingeniería y electrónica médica
(2014-04-23) Torres-Rivera, I. (Isnardo)
Acceso abierto
Bioingeniería e ingeniería biomédica en Colombia: trasegando en sus inicios y en la construcción de su futuro
(2014-04-23) Bustamante-Osorno, J. (John)
Acceso abierto
La bioingeniería en Colombia, por el camino de las alianzas estratégicas
(2014-04-23) Hernández-Valdivieso, M. (Mauricio)
Acceso abierto
La bioingeniería en el Caribe colombiano: historia y evolución
(2014-04-23) Romero-Santiago, A. (Alejandro)
Acceso abierto
La bioingeniería y la ingeniería biomédica en Colombia
(2014-04-23) Soler-López, F. A. (Fernando Arturo)
Acceso abierto
La Biotecnología y el desarrollo de investigación aplicada en el programa de Ingeniería Biomédica de la EIA y el CES
(2014-04-20) López-Rojas, L. E. (Luis Ernesto); García-Quiroz, F. (Felipe); Londoño-Peláez, C. (Carolina)
Acceso abierto
Los campos bioeléctricos y algunas aplicaciones médicas– Revisión
(2014-04-30) Moncada-Acevedo, M. E. (María Elena); Cruz-Saavedra, J. A. (Jorge Armando de la); Pinedo-Jaramillo, C. R. (Carlos Rafael)
The era of bioelectricity began with the investigations of Emil Du Bois-Reymond, one of the founders of electrophysiology. DuBois documented in detail electrical activities associated with nerve excitation, muscle contraction and healing processes. It is currently recognized that electric fields (EFs) are present in living organisms and that they direct and influence biological processes such as embryogenesis, regeneration and wound healing. Several studies have shown how EFs interfere with biosynthesis and cell migration, leading to new strategies for repairing ligaments and for tissue regeneration. At present, biological EFs and currents provide information needed for different types of diagnoses and treatments. This paper reviews some studies focused on the generation of endogenous bioelectric fields, their biological substrates and medical applications.
Acceso abierto
Casos de innovación en salud en Colombia: retos y proyectos
(2014-04-30) Ruiz-Ibáñez, C. (Carlos)
Acceso abierto
“CgMed”: Diseno y construccion de plataforma para determinar posicion del centro de gravedad en bipedestacion
(2014-04-23) Cuesta-López, L. F. (Luisa Fernanda); Lema-Calidonio, J. D. (José Daniel)
Stabilometry is a fi eld that comprises a series of studies, from which the specialist can study the location and trajectory of the center of gravity of a patient in standing position. It is a widely used technique among health industry professionals. It is also used to diagnose musculoskeletal system diseases and to establish personalized training and rehabilitation sessions for each patient. This project, presents the design of a stabilometric platform with four sensors and a metal structure in SAE 1010 steel, designed to withstand large deformations and efforts. The acquisition and conditioning of the signals begins with an amplifi cation and fi ltering stage. Then, using a data acquisition device, the data is uploaded to a graphic interface in LabView in order to calculate important variables and factors, such as the Romberg’s coeffi cient. Satisfactory results were obtained both in the design, modeling and construction of the device, as well as in the performed stabilometry tests.
Acceso abierto
Cirugía robótica mínimamente invasiva: análisis de fuerza y torque
(2014-04-30) Ruiz-Navas, D. (Daniel); Pérez-Ariza, V. Z. (Vera Zasúlich); Betancur-Betancur, M. J. (Manuel José); Bustamante-Osorno, J. (John)
Minimally Invasive Surgery and the adaptation of robotics to these procedures represent many advantages for the patient, the surgeon, and the health program. However, commercial devices used nowadays lack haptic feedback. This fact makes the tissue identification more difficult and increments the injuries risk during the surgical procedure. The development of systems with this kind of feedback has become a topic of interest throughout the world. The present article contains a revision of the state of the art about commercial and experimental systems developed in this area. Models for the force and torque propagation, used in Minimally Invasive Surgery, are also presented.
Acceso abierto
Consideraciones para el análisis de la marcha humana. Técnicas de videogrametría, electromiografía y dinamometría
(2014-04-20) Villa-Moreno, A. (Adriana); Gutiérrez-Gutiérrez, E. (Eduardo); Pérez-Moreno, J. C. (Juan Carlos)
Human gait analysis has been used in a wide range of applications, such as diagnosis and treatment selection for patients with neuro-muscular-skeletal diseases. The methods and technologies that exist for gait analysis are numerous, and they allow the recollection of the main quantitative parameters of a gait pattern in an objective way. A lot of factors must be considered during gait analysis in order to obtain reliable results; some of them must be taken into account, including the planning and configuration of the laboratory, the acquisition process and the results analysis system. This paper presents some considerations derived from the literature review and also from the direct experience with patients. They are mainly focused in systems which use techniques such as videogrammetry, dynamometry and electromyography, since they are the most used nowadays.
Acceso abierto
Construcción de matrices como sustitutos dérmicos: aplicación potencial en la regeneración de piel
(2014-05-05) Valencia-Serna, J. (Juliana); Pineda-Molina, C. (Catalina)
Wounds can cause loss of skin that limits the skin regeneration, making the treatment more difficult to address. The tissue engineering has developed skin substitutes that promote skin regeneration; however, it is imperative to find materials that allow fibroblast growth in order to find an appropriate skin substitute. The construction of tridimensional porous collagen and collagenhyaluronic acid matrixes crosslinked with 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide hydrochloride is presented in order to evaluate their potential use in skin regeneration therapies. Matrix porosity was evaluated. Degradation tests, human fibroblast adherence, viability and proliferation tests were performed. Matrixes had a uniform distributed porosity with mean diameters of 50 μm. Both collagen and collagen-hyaluronic acid (2:8 and 4:6) matrixes presented a progressive degradation rate with similar weight. After 24 hours under culture, the number of fibroblasts seeded on collagen matrixes were doubled, while the number of fibroblast seeded on collagen-hyaluronic acid matrixes remained similar. Even though porous structure and degradation rate of different types of constructed matrixes in this study are similar, collagen matrixes offer better adhesion and proliferation conditions for seeded fibroblasts in comparison with hyaluronic acid added matrixes, making them the best scaffold to be employed as a dermic substitute among the matrixes compared here.
Acceso abierto
Control de mouse para computador mediante potenciales eléctricos oculares
(2014-04-20) Arboleda-Clavijo, C. (Carolina); García-Cossio, E. (Eliana); Palacio-Ochoa, M. (Marcela)
The use of computers and associated technology, has promoted the development of more comfortable and efficient hardware devices. Many handicapped people can not access to this technology. As a result, innovative mechanisms have been designed to attend the requirements of these people. One of such mechanisms has been the control through biopotentials. This article presents the construction of a mouse prototype, which allows horizontal displacements in response to left and right ocular movements that are registered by instrumentation amplifiers, processed and microcontrolled.
Acceso abierto
Desarrollo de la línea de Bioinstrumentación, señales e imágenes médicas en el programa de Ingeniería Biomédica de la EIA-CES
(2014-04-20) Torres-Villa, R. A. (Róbinson Alberto); Ramírez-Giraldo, J. C. (Juan Carlos); Valencia-Díaz, E. (Edison)