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

Blood Sampling Tool for Free-Ranging Whales

Researchers:

Brad Baum & Rajit Chakravarty

presentation overview
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
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
Project Design Specification Summary

• Requirements:

- Collect 1cc of uncontaminated blood

- Retrievable sample

- Minimal harm to whale

- Accurate and reliable

- Compatible with crossbows

anatomy behavior
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
existing technology
Existing Technology
  • Biopsy darts

- little blood collected

- fired using a high-powered crossbow

• Contacted other researchers

suction cup solution
Suction Cup Solution
  • Recommended by researcher
  • Abrasive to skin of whale
  • Absorbs blood
  • Dissolvable plugs
pros cons
Advantage

• Not partial to blood vessels

Disadvantages

• No blood collection method

• Tracking of whale required

• Harmful to whale

• Not feasible

Pros/ Cons
needles vacuum tubes
Needles & Vacuum Tubes
  • Used on humans
  • Needles

- vary in length and thickness

• Vacuum Tubes

- self sealing

- glass/ plastic

- rapid filling

single needle vacuum system
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
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
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
• 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
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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