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Industrial Research And Consultancy Centre

An Improved Blood Smear Device

 

An improved device for preparing blood smears includes a base and a table that holds a microscope slide. A motor attached to the base moves a spreader assembly, which spreads the blood sample on the slide. The assembly moves back and forth using rods and a screw mechanism driven by the motor. The spreader pivots to apply the sample evenly on the slide. After use, it cleans itself automatically.

 

This technology addresses the need for a cost-effective, precise, and automated blood smear device that ensures consistent and uniform preparation of blood samples on microscope slides, suitable for resource-limited settings. It aims to simplify the smearing process, improve accuracy, and facilitate easy cleaning post-use.

 
  • Automation and Precision: Automates blood smear preparation for consistent and precise results essential for accurate blood cell analysis. 
  • Effortless Cleaning: Includes a cleaning station with sloping surfaces for easy and thorough cleaning of the smear blade after each use. 
  • Adjustable Speed Control: Allows motor speed adjustment to accommodate varying blood viscosities and slide conditions. 
  • Cost-effective Design: Uses 3D-printed parts and simple mechanical components for affordability and suitability in resource-limited settings. 
  • User-Friendly Operation: Features a thumb wheel for user-selected smear speeds, ensuring ease of use and adaptability in laboratories. 
  • Reliable Performance: Incorporates an optical sensor for consistent return to the starting position, ensuring reliability and reproducibility. 
  • Modular and Maintenance-Friendly: Designed with easy-to-assemble modular components, facilitating maintenance and reducing operational downtime. 
  • Enhanced Diagnostic Accuracy: Enables detailed examination of blood samples, aiding in the identification of blood disorders and parasites with high diagnostic accuracy.
 
  • Base and Carrying Table: The device has a sturdy base and a table that holds a microscope slide securely. 
  • Stepper Motor and Spreader Assembly: It includes a precise stepper motor mounted on the base. The spreader assembly, which spreads the blood sample on the slide, is connected to the motor. This assembly includes a spreader adapter and torsion springs for controlled movement. 
  • Guiding Walls and Cleaning Station: At one end of the table opposite the slide, there are guiding walls with sloping surfaces that act as a cleaning station. The spreader assembly can move into this station and is forced to rotate upwards, facilitating cleaning. 
  • Mechanical Drive System: The spreader assembly is driven by the stepper motor through a guide block, guiding rods, and a lead screw mechanism. This setup enables precise back-and-forth movement of the spreader assembly for consistent sample preparation on the slide. 
  • Pivoting Mechanism: The device features a pivoting mechanism around a hinge lever, allowing the spreader edge to contact the microscope slide effectively during blood smear preparation. 
  • Control Unit: It includes a control unit that manages the stepper motor, controlling the speed and movement of the spreader assembly.
 

Base: Supports the entire device structure. Carrying Table: Holds the microscope slide in position. Stepper Motor: Mounted on the base, drives the spreader assembly. Spreader Assembly: Includes a spreader adapter, hinge lever, and torsion springs for precise movement and pressure control. Cleaning Station: Features guiding walls with sloping surfaces for easy blade cleaning. Guide Block and Lead Screw Mechanism: Enables horizontal movement of the spreader assembly. Control Unit: Manages motor speed and movement. Optical Sensor: Ensures consistent starting position of the blade. Power Supply: Connected via a DC jack on the top cover. User Interface: Includes a thumb wheel switch for speed selection.

 

Enhancing Diagnostic Accuracy: Improves the precision and speed of blood smear preparation for more accurate disease diagnosis.

 
  • Medical Laboratories: Used for automated preparation of blood smears on microscope slides for diagnostic purposes. 
  • Healthcare Facilities: Facilitates efficient analysis of blood cells, aiding in disease diagnosis. Research Institutions: Supports biological research by providing consistent and reproducible blood smears. 
  • Educational Institutions: Used in teaching laboratories to demonstrate blood cell morphology and pathology. 
  • Veterinary Clinics: Adapted for examining blood samples from animals.
Faculty
Prof. Mahesh Tirumkudulu
Department
Department of Chemical Engineering
Application Number
202321006957
Grant Number
544227
Date of filing
Date of grant
For More Information :
Technology readiness level
9