Blood sampling tool for free ranging whales
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Blood Sampling Tool for Free-Ranging Whales. Researchers: Brad Baum & Rajit Chakravarty. Presentation Overview. Design Problem and Specifications Background Anatomy and Behavior Current Techniques and Equipment Design Ideas Proposed Solution and Why Future Problems Questions.

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Blood sampling tool for free ranging whales l.jpg

Blood Sampling Tool for Free-Ranging Whales

Researchers:

Brad Baum & Rajit Chakravarty


Presentation overview l.jpg
Presentation Overview

  • Design Problem and Specifications

  • Background

    • Anatomy and Behavior

    • Current Techniques and Equipment

  • Design Ideas

  • Proposed Solution and Why

  • Future Problems

  • Questions


  • Design problem l.jpg
    Design Problem

    • Estrous cycles & mating behavior are unknown

    • Hormones in blood are crucial to understanding behavior & cycles

    • No current blood extraction technology

    • Design Problem

    - Blood obtaining instrument needed


    Project design specification summary l.jpg
    Project Design Specification Summary

    • Requirements:

    - Collect 1cc of uncontaminated blood

    - Retrievable sample

    - Minimal harm to whale

    - Accurate and reliable

    - Compatible with crossbows


    Anatomy behavior l.jpg
    Anatomy & Behavior

    • ~ 15 meters in length

    • Thick and strong skin

    • Surface for 3-4 breaths after 10-45 minute dive

    • Major blood vessels located in tail


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    Existing Technology

    • Biopsy darts

      - little blood collected

      - fired using a high-powered crossbow

      • Contacted other researchers


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    Suction Cup Solution

    • Recommended by researcher

    • Abrasive to skin of whale

    • Absorbs blood

    • Dissolvable plugs


    Pros cons l.jpg

    Advantage

    • Not partial to blood vessels

    Disadvantages

    • No blood collection method

    • Tracking of whale required

    • Harmful to whale

    • Not feasible

    Pros/ Cons


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    Needles & Vacuum Tubes

    • Used on humans

    • Needles

      - vary in length and thickness

      • Vacuum Tubes

      - self sealing

      - glass/ plastic

      - rapid filling


    Single needle vacuum system l.jpg
    Single Needle Vacuum System

    • Double sided ten gauge wide bore needle

    • 2.5 inches in length

    • Plastic vacuum tube

    • Utilizes momentum to puncture seal

    • High strength fishing line


    Pros cons11 l.jpg

    Advantages

    • No contamination

    • Rapid blood extraction

    • Minimal harm to whale

    • Easily retrievable

    Disadvantages

    • Small chances of hitting blood vessels

    • High chances of breaking

    • Must penetrate thick skin

    Pros/ Cons


    Multiple needle vacuum system l.jpg
    Multiple Needle Vacuum System

    • Similar to single needle system

    • 7 needles

    • Varying lengths of needles (1.5-2.5 inches)

    • Proposed idea


    Pros reasons for choice l.jpg

    • All the advantages of a single needle system

    • Increased chance of blood collection

    • Increased strength of needle system

    • Fits majority of required specifications

    Pros/ Reasons for Choice


    Future problems to consider l.jpg
    Future Problems to Consider

    • Force required to puncture skin ?

    • Flight path ?

    • Maybe more harm to the whale ?

    • Mechanical problems ?

      - needle extraction from seal

      - sufficient momentum

      • Size of blood vessels ?



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