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Development of radial hemostatic compression prototype with pulse and perfusion measurement
IFMSA Denem - Universidade de Vassouras, Vassouras
Biotechnologies and Informatics
Professional Master’s Degree in Applied Health Sciences
Marco Aurélio dos Santos Silva
Mario Luiz Jacobino Ribeiro; Marco Aurélio dos Santos Silva; Mônica de Almeida Carreiro
Type of Research Project
- Clinical Project with Laboratory work
What is the background of the project?
This research aims to develop a hemostatic compression prototype with pulse and perfusion measurement of the radial artery, which gained strength from a task of the discipline of the Master of Applied Sciences of the University of Vassouras, where we are provoked to improve technologies or devices that are part of our field of work. Through an industrial design, the need to improve the radial artery hemostatic dressings after percutaneous procedures was realized, which today are performed with tape, micropore and sterile gauze roll, and emphasize that there are other technologies in the market, but no device brings the similarity of the pulse / perfusion measurement to determine the duration of use or the regulation of pressure exerted on the artery. Specifically, oximetry measures the change in blood volume, that is, we believe that a compression created by the hemostatic dressing guarantees a decrease in circulating hemoglobin, and that the measurement may guide us in regulating the pressure exerted by this device, thus, causing an impact on the decrease of vascular complications, such as: aneurysms, pseudoaneurysm, decrease in vessel patency, hemorrhages and bruising.
What is the aim of the project?
Develop a hemostatic compression prototype with pulse and perfusion measurement of the radial artery with pulse oximetry measurer. Design a prototype of radial artery hemostatic compression. Develop a 3D model of the radial artery hemostatic compression prototype. Select materials to develop a prototype hemostatic compression prototype. Register the hemostatic compression prototype with pulse and perfusion average.
What techniques and methods are used?
The prototype will be developed in the engineering laboratory of the University of Vassouras and made from the model created in three-dimensional (3D) printers, which are rapid prototyping machines, created to create innovative products in the shortest possible time. The application of 3D printers in healthcare has been steadily increasing in the number of benefits such as product customization and personalization, increased accuracy and a greater possibility of innovation. Thus, the objective of the project is to develop medical products with the help of the 3D model. A 3D modeling will be performed using Solid Works ® software. Once the model is defined, it will be printed on the Makerbot Replicator ® 3D printer in acid politician (PLA). The characteristics of this prototype take into account materials whose cost to manufacture may meet all types of services, both public and private, and to evaluate pulse and perfusion, being ideal to minimize or avoid vascular complications. Therefore, we will list the characteristics to consider in the prototype: a) adjustable; b) adaptable; c) low cost; d) hypoallergic; e) thermally comfortable f) waterproof; g) ergonomic h) easy installation. After removing the introducer sheath in the radial region, we intend to position the transparent plastic hemostatic dressing, mounted on a rigid silicon material, about 1 cm above the puncture site, fixing the velcro side flaps in the posterior region of the wrist, adjusting according to oximetry variation, accompanying pulse and perfusion. The adjustment of the dressing will depend on the measurements made on the pulse oximetry adapted to the device, with the compression adjustment and the determination of the time of use of the hemostatic dressing aided by this measurement of the oxygen saturation measured at the extremity of the hand. We know in practice that compression of an artery when assessing pulse oximetry affects perfusion due to decreased circulating hemoglobin. We want to demonstrate in the prototyping of this hemostatic dressing that the patient benefits from this device, since it guarantees the patency of the vessel to perform cardiac catheterization and future coronary angioplasty, as well as the need for radiocephalic fistula for hemodialysis access, and ensuring that a possible hypoperfusion caused by the loss of vessel patency does not become a vascular disorder, such as numbness, cold extremities, and very compressive and garbled dressings can cause nerve damage, compartment syndrome, as well as amputations. The prototype should be developed in a single size and adjusted to different anthropometric standards, using transparent, resistant plastic material that allows evaluation of the peripuncture site in case of bleeding and hematoma, with velcro tabs, which will be fixed at the back of the wrist, ensuring a firm and secure closure. The idea is that we can group this device with a pulse oximetry to evaluate the pulse and perfusion of the limb. There are several oximetry devices on the market, however, for this prototype, we think of an oximetry model with existing technologies, and that can meet the idealization of this prototyping, with red and infrared emitters, such as conventional oximetries. Theoretical study on the topic: March to June/2019. Elaboration of the research project: June until August/2019. Submission of the research project to the Dean of Research and Graduate Studies of the University of Vassouras: August/2019. Material Selection: September 2019 to November/2019. Prototype Development: March to May/2020. Articulation of the developed prototype with the used literature: June until December/2020.
What is the role of the student?
- The student will observe the practical experiments but will be highly involved in the analysis of the results
- The tasks will be done under supervision
What are the tasks expected to be accomplished by the student?
The student is expected to help the tutors and other researchers envolved in the project design a prototype for radial artery hemostatic compression using the software Solid Works ®, as well as help develop a 3D model of the radial artery hemostatic compression prototype, select materials to develop a prototype hemostatic compression and evaluate the eficacy of the prototype of hemostatic compression by measuring pulse and perfusion of patients that used the product.
Will there be any theoretical teaching provided (preliminary readings, lectures, courses, seminars etc)
Yes. There will be preliminary readings and seminars provided by the project tutor on introduction to scientific research and clinical trial, as well as on an introduction to working with the 3D printers. The theoretical teaching provided is expected to be in depth enough for the students to be able to work with the technology without needing to have previously worked with or studied 3D printing.
What is expected from the student at the end of the research exchange? What will be the general outcome of the student?
- The student will prepare a presentation - The student will prepare a scientific report
What skills are required of the student? Is there any special knowledge or a certain level of studies needed?
The student is expected to have basic digital tools knowledge (such as word processing documents, slide presentation software, electronic reference materials and tablet and cellphone applications), since the student will be expected to learn how to use the 3D printer, and the process will be easier with students that have digital tools knowledge.
Are there any legal limitations in the student’s involvement
Type of students accepted
This project accepts: - Medical students - Graduated students (less than 6 months) - Students in biomedical fields
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- BRAUNALD; Tratado de medicina cardiovascular. Rio de Janeiro: ed. Elsivier; 2010.
- Damiani; Felipe Rafael de oliveira - Proposta de um protótipo de oxímetro de pulso empregando a tecnologia FPAA. São paulo: Universidade de São Paulo; 2010. Dissertação de Mestrado.
- DRAGER; L.F; GALVÃO.T.F.G. Cardiologia: da fisiologia a prática clínica. São Paulo: ed. Sarvier; 2009.
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