Members Guide Albin Poulose Mr. Nobu Karippai Aliya Abdulla A R Reshma Anjun George

1. Finger Strength Measurement System • MembersGuide • AlbinPoulose Mr. NobuKarippai • Aliya Abdulla • A R Reshma • Anjun George • JintuJohny SAHRDAYA COLLEGE OF ENGINEERING & TECHNOLOGY PB No 17, KODAKARA, THRISSUR-680684

2. “Twenty percent of all hospital admissions are hand-related. Neuromuscular disorders like spinal cord injuries, LouGehrig's, diabetes, multiple sclerosis – all these diseases affect the intrinsic hand muscles,” (Hospimedica international vol 27, no.7, 11/2009) Sahrdaya college of engg & Tech

3. Aim of Project • Design an instrument to measure the strength of the fingers Objectives • To diagnose hand injuries and muscle disorders in hand • To help the doctor in diagnosis of disease • To help patient Sahrdaya college of engg & Tech

4. Why ???? Diagnose CARPEL TUNNEL SYNDROME CTS (A neurological disorder) • Carpal tunnel syndrome is the most common nerve compression disorder of the upper extremity. This process affects 1 percent of the general population and 5 percent of the working population who must undergo repetitive use of their hands and wrists in daily living. • According to the U.S. Bureau of Labor Statistics, nearly two-thirds of all occupational illnesses reported, were caused by exposure to repeated trauma to workers upper body ( the wrist, elbow or shoulder ). One common example of such an injury is carpal tunnel syndrome. Sahrdaya college of engg & Tech

5. What is CTS?? • Carpal tunnel syndrome is pressure on the median nerve -- the nerve in the wrist that supplies feeling and movement to parts of the hand. It can lead to numbness, tingling, weakness, or muscle damage in the hand and fingers. Symptoms • Weak grip or difficulty carrying bags (a common complaint) • Weakness in one or both hands • Numbness or tingling in the thumb and next two or three fingers of one or both hands • Numbness or tingling of the palm of the hand • Pain extending to the elbow • Pain in wrist or hand in one or both hands • Problems with fine finger movements (coordination) in one or both hands • Wasting away of the muscle under the thumb (in advanced or long-term cases) • (ref:- http://www.nlm.nih.gov/medlineplus/ency/article/000433.htm) Sahrdaya college of engg & Tech

6. Some Statistics - disorder affecting 7% of population - 14% of physician visits and 19% of hospital stays. 62% of the persons with musculoskeletal disorders report some degree of limitation on activity - according to the National Institute for Occupational Safety and Health. - Presently, 25% of all computer operators have Carpal Tunnel Syndrome, 50% of the entire workforce may be affected. (reference : http://www.repetitive-strain.com/national.html) Sahrdaya college of engg & Tech

7. How we did???? Sahrdaya college of engg & Tech

8. Major components • Force sensing unit -force sensing resistors (decrease resistance with an increase in force applied • Microcontroller -PIC16F877A • Display Part - LCD display • Mechanical unit Sahrdaya college of engg & Tech

9. Mechanical Design Sahrdaya college of engg & Tech

10. Working…. • Switch on power supply • Place finger in loop • Immobilize rest of the fingers (to prevent force exerted by rest of the finger) • Patient will ask to lift the finger • LCD will show the force values • Finalize the maximum value • It will be compared with the pre set values • If any abnormality alarm will be there • Several switches are provided to set the values Sahrdaya college of engg & Tech

11. Result • Found the strength of finger • Survey was conducted in Sahrdaya College of Engineering & Technology and in a hospital • Patients whose finger strength is below 1000 mN was found to be defective Sahrdaya college of engg & Tech

12. Advantage • Easy to measure finger strength and to diagnose problems in finger • Helpful for doctors in quantizing the data of patients who found to be defective • Can record for future reference • Users can set the detection limit • Helpful for patients (can check the strength by themselves there by preventing continuous consultation) • Check the improvement after medication • Complete patient isolation board Sahrdaya college of engg & Tech

13. Disadvantages • Need little manual effort to find the strength • No inbuilt storage capacity • Max force can be applied is 6000mN • Presently no comparison set is included • Need little more research Sahrdaya college of engg & Tech

14. Marketing strategies • Presently no such equipment in market • Cost is very less • Affordable for common man • Doctors preferring such type of equipment • Manufacturing is simple • More facilities can be included Sahrdaya college of engg & Tech

15. Technical specification of present prototype • Power supply: 230V, 50Hz • Maximum current:- 500mA • Power rating :- 5W • Max Force:- 6000mN Sahrdaya college of engg & Tech

16. Future plans • Memory chart system have to be set for future reference • Perfect immobilizers have to be made • Ergonomics of the system to be made user friendly • Chart printer has to be made • Planning to give prescriptions along with the check up, so patients can practice it. Sahrdaya college of engg & Tech

17. Conclusion • Successfully completed • Definitely simplify the task of doctor in diagnosis • Patients can reduce the frequent check up • Hope to make a change diagnosis set up Sahrdaya college of engg & Tech

18. Reference • hospimedica international vol 27, no.7, 11/2009 • http://www.nlm.nih.gov/medlineplus/ency/article/000433.htm • http://www.repetitive-strain.com/national.html • Basic biomechanics 4th edition Susan J Hall • Embedded computing with PIC 16F877A Dr. Charles Kin Sahrdaya college of engg & Tech

19. Queries ???? Sahrdaya college of engg & Tech

20. Sahrdaya college of engg & Tech