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Hello! I'm Adrit.

I am a Design Engineer working on products that improve peoples' lives. I currently work at Intuitive where we make the DaVinci surgical robot.

Outside of work you can find me working on personal projects, brewing coffee, biking or exploring the world.

 

SKILLS

  • DESIGN & MANUFACTURING

    CAD, CAM (MasterCAM, HSM Works), FEA, Medical Devices, FDA Compliance, Industrial Automation

    CNC, Injection Molding, Extrusions, MIM, Stamping, Coatings, Surface Finishes, Surface Treatments

  • ELECTRONICS & SOFTWARE

    Microcontrollers, PLCs, Servo Drives, Sensors

    Embedded (C, C++), iOS, Web (full stack), SQL, Python, MatLab, Simulink

INTUITIVE SURGICAL

SUNNYVALE, CA. MAR 2016 - PRESENT

  • Intuitive makes the DaVinci surgical robot and the surgical instruments that work with the robot. I work on the Advanced Energy Instruments team that designs and develops RF instruments for vessel sealing. Over 1 million surgical procedures are done on DaVinci robots every year. Over 100,000 vessel sealers per year are used for procedures that demand high confidence in hemostasis of critical blood vessels.

  •  
    • DaVinci Xi Surgical Robot, the latest generation for multi-port & multi-quadrant surgery.

     

SENIOR MECHANICAL ENGINEER,
ADVANCED ENERGY INSTRUMENTS DESIGN

AUG, 2018

  • Technical lead for next generation vessel sealing instrument with novel features that allow greater efficiency and precision with the tool for surgeons
  • Designed critical components of the next generation instrument
  • Developed innovative solutions to design and controls problems that will result in multiple IP filings
  • Architect for critical cross functional components that will be used in future instruments across different teams
  • Deep understanding of robotics controls enabled developing solutions collaboratively on the mechanical and controls software sides which would otherwise have not allowed us to achieve critical performance metrics for the instrument
  •  
    • Vessel Sealer Extend, latest generation of vessel sealing technology that my team designed and launched in 2018. The next gen product I am working on significantly improves on this product and introduces new features not currently on the market. See details.

     

MECHANICAL ENGINEER,
ADVANCED ENERGY INSTRUMENTS DESIGN

MAR, 2016

    Chosen for the Talent Exchange Program - a program in which 5 engineers spend 1 quarter per team in each other's teams. I worked in the following teams:

  • Supplier Engineering for Endoscopes
    • Resolved supplier related issues in manufacturing and part quality
    • Performed supplier audit with a lead auditor
    • Performed testing and worked with design engineers to change a part's design to help with better production yields
  • Manufacturing
    • Developed an automated fixture for leak testing the Xi Suction Irrigator Instrument
    • Published technical reports for leak testing methodology with experimentally proven data to back theoretical predictions
    • Developed and put in production key manufacturing tools for the assembly of the Xi SureForm 60 stapler instrument
  • Systems Design (Robot Mechanical Design)
    • Developed a creative solution for a joint on DaVinci X that would otherwise have not met clinical preferences fully because of an issue discovered very late in the design cycle
    • Debugged encoder linearity issues and came up with design fixes
    • Redesigned several parts for better DFM, assembly and reliability
    • Conducted V&V testing
    •  

      I worked on key components for the joint and encoder of arm 2 of the DaVinci X robot. The robot was launched in mid 2017.

       

THERANOS

PALO ALTO, CA. JUL 2011 - FEB 2016

  • Theranos is a medical device start-up that builds its own analyzers and provides diagnostic lab services. It uses proprietary technology to run a large number of tests on a very small sample of blood. I started with working on the Theranos device, then worked on the design of several consumables used by the device to run assays. Along with that, I worked on automating the configuration of various consumables used for specific tests. I also helped innovate the technology behind a device that can collect blood from a finger stick and store the blood in its containers that then interfaced with the diagnostic device.

PATENTS

  • 9877674, granted Jan-18, Systems, devices, and methods for bodily fluid sample collection
  • 9810704, granted Nov-17, Systems and methods for multi-analysis
  • 9427184, granted Aug-16, Systems, devices, and methods for bodily fluid sample collection
  • Several pending patents

MANAGER,
HARDWARE ENGINEERING

JAN, 2015

  • Owner of all disposable / consumable design efforts, and automation efforts used to dispense / handle / store and configure the consumables
  • Recruiting talent for the hardware engineering teams
  • Continued individual contribution to design and development of consumables and automation components

TEAM LEAD,
AUTOMATION

JAN, 2014

  • Architecting automation lines for high throughput pick and place of consumables used for running diagnostic tests based on near-term growth goals, budgets, timelines and long-term goals while ensuring enough flexibility to allow for changes without significant time or capital reinvestment
  • Video showing automation at Theranos. I designed all the end-effectors that are on the delta robots in this video

PRODUCT ENGINEER

JUL, 2011

  • Device Design
    • Part of the original group that designed Minilab Theranos diagnostic device (not 'Edison')
    • Responsible for the motion platform, certain fluid handling systems, chassis, cable / connector selections for moving parts and outer enclosure
    • Designed and developed several fluid handling systems that handled fluids in the 2-40uL range at sub 5% CV and wrote the firmware and validation programs to test the systems
    • Design and tuning of PID controllers for velocity and position control
    • Most parts for those systems were CNC machined, sheet metal or metal injection molded. Knowledgeable with materials, coatings, finishes, process constraints and costs for those processes.
    • Video showing the insides of the Minilab. I designed several modules shown in this video.

  • Consumables / Disposables
    • Designed several plastic injection-molded disposables to hold reagents and transport fluids
    • All designs were made for mass production, bulk fluid dispensing and automation assembly friendly
    • Knowledgeable with process limitations, tolerances, materials, finishes, marking, cavitation and molds for injection molding

TESLA

PALO ALTO, CA JUN - SEP, 2010

  • Improved the cell simulation model for li-ion cells to better represent their behaviour in extreme temperature and power demand conditions
  • Added functionality to the existing battery pack model to allow simulation of li-ion cells with different chemistries in the same pack

REVA
ELECTRIC CARS

INDIA FEB - AUG, 2009

  • Designed a chassis concept for a 3 wheeled vehicle with a swappable battery pack
  • Developed a cost and range optimizing simulation of a battery pack that would change the size and chemistry ratios for electric cars

HONEYWELL

INDIA JUN - AUG, 2008

  • Was tasked with developing an algorithm to do weight reduction of parts at the design phase
  • Developed an algorithm in Ansys that used parametric modeling with constraints to iterate over multiple possible geometries an pick the option with the lowest weight that met the strength criteria

LUTRON

COOPERSBURG, PA AUG - DEC, 2006

  • Designed and manufactured a go-no-go gauge for certain electronic components that were seeing a high failure rate
  • Did a stack-up analysis on an assembly with Monte-Carlo analysis to identify parts that needed to be toleranced better / differently

STANFORD

MS MECHANICAL ENGINEERING SEP '09 - JUN '11

  • Depth in Mechatronics (ME 218 Series) and Design Methodology (ME 310 Series)
  • TA for ME310 - Design Methodology
  • TA for Undergrad Dynamics courses
  • TA for Digital Photography course

GEORGIA TECH

BS MECHANICAL ENGINEERING AUG '05 - DEC '08

  • President's Undergraduate Research Scholarship Awardee
  • Won 1st place for senior design project - designing a hybrid Formula SAE race-car
  • Research work on Command Shaping and Input Shaping of motion profiles of cranes to minimize payload swing

RC BOAT

MECHATRONICS CLASS PROJECT STANFORD

  • We built an RC Boat for ME218C - the third class in the mechatronics sequence. The boat's electronics, hardware, hull, powertrain were completely designed and built in 3 weeks. This project incorporated wireless communication using Xbee.

  • As you can see from the video, we took the competition a little too seriously! Our's is the speedy boat doing the bullying!

BASKETBALL ROBOT

MECHATRONICS CLASS PROJECT STANFORD

  • For the second Mechantronics class - ME218B - we build an autonomous basketball playing robot. The robot used sensors to detect pulsing IR light and features on the playing surface to navigate around the court. It used a PID-controlled flywheel that changed its speed based on the distance from the hoop to launch the balls. We incorporated a state-machine based control scheme for the robot.

URBAN EV CONCEPT

RESEARCH PROJECT STANFORD

  • Panasonic, which makes Li-ion batteries, wanted to explore EV concepts for future urban environments. We build a functional prototype of an EV for a single passenger, which folded to reduce its footprint for parking. It also featured a canopy style door that allowed the passenger to enter and exit very easily. We worked under the assumption that autonomous driving would be the norm, so elaborate controls like steering wheels and shift knobs were not part of the car's interior.

SATELLITE IN A CAN - CANSAT

RESEARCH PROJECT GEORGIA TECH

  • Every year, in the Black Rock Desert in Nevada, college students gather to have their tiny rovers get shot up to 10,000 ft on rockets and dropped. The objective is to make it back to the earth in 1 piece and then navigate to a pre-determined co-ordinate using GPS. The aim of the exercise is to develop very cheap, robust rovers that can be deployed to planets like Mars. Our research group at Georgia Tech took part in this every year. I was part of the team for 2 years and worked on most of the mechanical design, parachute deployment, motors and wheels.

SMART THERMOSTAT

PERSONAL PROJECT

  • I wanted a Nest in my house, but it turns out the thermostat/heater style is my apartment is so old that the Nest can't be installed with it. It is literally a mechanical thermocouple that connects the lines to turn on the heater! So, I decided to make my own. I used an Arduino Yun (WiFi), a high-load relay, and a temperature sensor for the thermostat. The Arduino pushes & pulls the temperature data to 'ThingSpeak' a web service that has a very simple API to push and pull simple sensor data. The iPhone app also pushes set-point data to the ThingSpeak channel, which is read by the Arduino to turn the heater on/off based on set-point. So, I can control my heater from anywhere!

ENGAGEMENT RING

PERSONAL PROJECT

  • Being a mechanical engineer with a Master's degree, I felt obligated to make my own engagement ring. I sketched out concepts, carved the shape out of wax and had a friend investment cast it. After some sanding, polishing, and installation of a crown that held the diamond, the ring was complete! And, yes, she said yes!

QUADCOPTERS

PERSONAL PROJECT

  • Quadcoptors or 'Drones' as they are infamously called these days are extremely fun to design, build and fly. A couple of friends and I got pretty into quadcoptors over the last two years. I've designed and built a few frames and quadcoptors. I also have a prototype for a vibration damped gimbal for taking stabilized and motion compensated videos using a GoPro on one of my bigger frames.

  • Below is a video I took with one of my bigger frames. It was extremely windy, and my piloting skills are not the best, so it came down hard!

THIS WEBSITE

PERSONAL PROJECT

  • If you have made it this far, I'd like to think this website was successful in its purpose. I wanted to create a clean, elegant personal website without any distractions. Most people with a few years of experience have done a lot of interesting things, and it is impossible to read all that they want to tell you without getting distracted by other faces, links and banners on Linked In!