Medical Devices

Medical Devices & Restorative Technologies

Ministry of Human Resource Development(MHRD) has funded Rs. 1.50 crores for this sub theme area under the Design Innovation Centre(DIC) project.

This area is focused on developing indigenous processes and products in the area of medical devices & restorations.

University Institute of Engineering & Technology(UIET) has been working extensively in developing dental models, implants & aligners using rapid prototyping,  developing pressure & motion sensing devices for biting force measurements, hand gesturing and joint functioning, designing of human mandible & maxilla using software and printing, low cost wire extruding devices and indigenous milling machines for fabrication of dental crowns & implants.

The conventional methods for taking dental/jaw impressions have a lot of inaccuracies which result in compromised solutions of braces, aligners, crowns and implant developments. Replacing these methods, by a high end scanner to obtain high resolution dental images and 3D printing of these images can assist in developing reliable and precise dental prosthesis. Computer Science & Engineering Department of UIET is handling this area of imaging while extensive patient data for analysis is being provided by Dental Institute.

Transparent aligner for aligning distorted teeth has been a very expensive solution for patients in India due to the high material cost involved in its development. Mechanical Engineering Department of UIET has been working on high strength and transparent composite materials to fabricate an indigenous transparent aligner which could provide an economical solution for the Indian consumer in the near future. 

An indigenous low cost 3D printing machine has also been developed in house which provides accurate and comparable results with the commercial printers available in the market. Based on Fused deposition modeling (FDM) this printer is able to print products in various plastic based raw materials. An indigenous glove is being worked upon which is being equipped with different types of motion sensors thereby enabling physiotherapists and orthopedics to evaluate joint and finger movements. Pressure applications by finger joints and palm can also be evaluated using this device and therefore joint strength can also be evaluated for understanding treatment progressions & various other joint related diseases. Similarly, human biting force measuring device is also being optimized so that dental and facial surgeons can assess jaw strength, recuperation from bone fractures  etc.

During fatal skull and facial injuries, patients require extensive surgeries for reconstructions. For accurate and precise surgeries, surgeons require accurate facials models which are generated by high designing software and fabricating facial models. Our team in UIET along with facial surgeons are extensively designing such models for maxilla, mandible etc.

The sub theme research group comprises of the following members:-

FACULTY STUDENTS
Dr. Prashant Jindal (Principal Investigator), Aditya Pratap Singh, Kachita Kohli, Yash Gopal Mittal, Vani Raheja, Shubham Kumar, Sudiksha Shukla
Dr.Mamta Juneja, Dr. Manu Sharma, Deepkamal Kaur Gill, Divya Bajaj, Ishan Madhav
Dr.Amit Chauhan, Kartikeya, Stanley, Aniket, Anindya, Kachita, Gursimran
Mr.Amandeep Wadhwa, Dr. Rajesh Kumar, Aditi(Lead), Yugam, Arshdeep, Yashi, Saransh, Dinesh, Sehdev, Kanwerbir, Abhay Rana

Equipments Purchased under Medical Devices and Restorative Technology

1.Title of Prototype: Hypotonic Glove

Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable: A hypotonic glove has been developed for mechanical rehabilitation of patients suffering from hypotonia. The exoskeleton glove provides extension assistance to patients who have reduced hand muscle strength. The glove uses elastic strings to assist patients to extend their fingers in functional position. The strings control the tension applied to individual fingers using a tightening mechanism.This device is produced at one-fifth the existing market rate and an MoU has been inked with Tynor Orthotics Private Limited for commercialisation of the product. Market review and product research has also been done for the same with PGIMER, CSIR-CSIO and CII.

2.Title of Prototype: Clear Dental Aligners

Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable: Clear dental aligners are being fabricated as an aesthetic alternative to the conventional braces. They aim to achieve alignment of tooth in least duration with maximum ease and hygiene. Ethical approval for data usage of 100 patients has been taken from HSJIDS, Panjab University and the product has also been successfully tested on 10 patients. Manufactured at about half the market rate, this project has won the best startup award in Udyami, the annual entrepreneurship summit of tricity. Talks with industries are under way for selling the product in market.

13

 

3.Title of Prototype: Dual Extrusion 3D Printer

Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable: An indigenous 3D printer has been developed capable of printing dual material/ coloured objects with great precision and accuracy. An improved surface finish is obtained due to lesser vibrations obtained by using Bowden extrusion assembly. One advantage over conventional printers is that it can print a large number of materials because of the metal hotend with minimal material wastage in the form of support. It has been developed at one-tenth the market price and is being considered by Tynor Orthotics for commercialisation. The printer has constantly won accolades at all events and conferences where it has been presented. Efforts are now being made for commercialising the low-cost dual extrusion printer.

 

 14

 

 

 

4.Title of Prototype: Wire Extrusion Machine

Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable: A wire extrusion machine has been developed in-house to transform low cost plastic beads into a uniform wire that can be used for 3D printing. Different kinds of plastic wires can be made with a uniform diameter by varying the temperature conditions of the extruder, which satisfies the range of dimensions for utilizing the filament in FDM based 3D printer. At 20% cost of the ready-made wires, the wires produced using this machine show the exact same stress strain behaviour. It is currently under negotiation with Tynor Orthotics and other companies for acquisition and can be sold as a combination with the dual extrusion 3D printer.

15

5.Title of Prototype: Tooth Shade Detector

Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable: A battery operated hand-held, electro-mechanical device has been developed to predict the colour of crown based upon the adjacent/ same teeth colour. It is useful for restoration of teeth or placing dental implants and in dentistry to determine the exact shade of tooth so that no human or environmental factors may intervene. It costs about half of the presently available Vita shade guide, which also requires human intervention. An OLED display and a high resolution camera enable easy interpretation of the tooth color. The product was developed to resolve the conundrum of orthodontists in HSJIDS, Panjab University. The next goal is to predict the extent of removed enamel from tooth.

 

16

 

6.Title of Prototype: Maxillofacial, Craniofacial and Oral Reconstruction

Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable: Templates for reconstruction/ correction of defected craniofacial and maxillofacial parts are being generated using automation. The 3D printed model of the maxillofacial region of the patient helps in pre-surgical planning. The missing/ defected cranial part is reconstructed using automation and 3D printed, which is later used as a template by the surgeon for fabricating the biocompatible implant. An oral Titanium mesh is designed using finite element analysis for restoration of the tumor-affected region. These models thus help in providing accurate and time-saving surgical approaches. Patients suffering from such deformities/ defects are able to get cost-effective functional and aesthetic outcomes through engineering-based assistance. Seven patients have undergone successful treatment using the aforementioned techniques, with the craniofacial reconstruction of a young girl using 3D printing being the first-of-kind surgery in the tricity.

17

7.Title of Prototype: Automated Generation of Surgical Guides

Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable:  For placing dental implants, surgeons have to drill through by estimation. This is time consuming as well as leads to inaccuracies in the placement of the implant. There is also a high risk of damaging the nerve present in the lower jaw. Surgical guides aid in the accurate placement of the implants by defining the exact depth and diameter of the implant and help reduce the duration of the procedure. Automated generation of surgical guides using 3D printing significantly reduces the time that traditional manufacturing of surgical guides takes.

 

 18

 

8.Title of Prototype: Bite Force Measuring Device

Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable: Bite Force Measuring Device is a battery operated hand-held, electro-mechanical device to measure the instantaneous as well as maximum human bite force. The USB port for connecting to PC and the OLED display make it more user-friendly. It is 75% cost effective than the commercially available devices with high reproducibility. Medical tie-up with Government Medical College and Hospital (GMCH), Sector-32, Chandigarh and industrial tie up with Saksham Enterprise has been established. The device has been tested on more than 100 individuals. It finds its applications in medical colleges and research institutes, to study the variation of human bite force, over a desired population, in dental clinics and hospitals, to check the bite force of patients as a general procedure during dental check-ups (to check the dynamic capacity of the teeth) and to quantitatively measure the extent of recovery of a patient who has undergone a jaw surgery. 19

9.Title of Prototype: Pressure Plate

Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable:  Pressure plate is a pressure sensitive mat that can detect the pressure map of a person‘s feet when standing on it. It gives us the details about his weight distribution and standing posture, thus aiding in detecting diseases like diabetic neuropathy, bow and knock knees, over pronation & over supination in early stage. It can be used tos detect the body weight distribution over foot, analyse the standing posture based on foot pressure map and early stage detection of diabetic patient. It also helps in the rehabilitation process of injured leg. The future step is to make a full body size pressure sensitive mat, increase the weight limits, enhance the resolution of pressure matrix (enhanced GUI) and to make a sensitive mat for infants.

 

 

20

Title of Prototype: Motion Sensing Glove

10.Name of Project PI: Dr. Prashant Jindal

Name of Institute: UIET, Panjab University

Deliverable: Motion Sensing Glove is an electro-mechanical device which measures the angular change in the PIP-MP joint of each finger of the human hand. It is a light-weight hand-held device which is arduino-based and operated using laptop. It has a linear calibration curve and is used for real time data transfer. It can help in quantitative measurement of the angular deflection of every finger, estimation of recovery of a person who has undergone a hand surgery and effectiveness of drugs/ painkillers on finger movements. The future goal is compacting of the device, addition of battery operated feature, addition of memory feature to store readings of the patients and develop a GUI to measure PIP-DI joints.

 

 

 21

 

 Demonstrative videos, Projects and Media coverage

 

hand pressure sensor 2 hand pressure sensor 1     teethaligner 1
tribunenewsajit newspaper clipping 2

IMG_0364_1

 

Contact Information:-

Dr. Prashant Jindal

jindalp@pu.ac.in


Contact Us

Project-­in Charge, DIC
South campus ,Sector-25,
Panjab University ,Chandigarh
Ph. No: 0172-2544995, 2541242
Fax: 0172-2541022
Email -Id : po.dicuiet@gmail.com