It has come to pass that I am the keeper of the rectal temperature probe. How the events in my life conspired to get me to this lofty height I’m not sure but I now find myself responsible for the comfort of unsuspecting lab animals the world over. I didn’t invent this product, I’m not clever enough for that. I’m more of a keep-it-running-now-that-it-exists type of guy. I’m also an improve-it-based-on-customer-input guy. Oh yeah, and there’s the figure-out-how-to-make-it-work-when-the-vender-tells-you-that-the-minimum-buy-is-twenty-five-hundred-parts-so-you’ll-have-to-find-another-way-to-build-it guy. That’s me.
I mention this now because it has been my ongoing project for quite some time. My latest solution has been shipping for a couple of months and suddenly it’s been quiet. Where I was once hearing many complaints I’m now hearing silence. But it’s still early yet. Customers take change gradually. I have to admit I’m excited about this latest rendition though. Originally I had to make it with a smaller diameter for the comfort of the animal. I’m all about the comfort of the animal but to look at it from my end for a moment (oh look at me with the puns) it was quite an undertaking to find components to do that.
See it’s like this. There’s this little tiny device called a thermistor bead (because it looks like a little bead) and it reacts to temperature in an electrical sort of way. It has two little wires coming out of it. The trick is to first find the smallest bead you can find with the electrical characteristics you need and to put this bead into something that will allow you to insert it in the animals bum with the least amount of discomfort and at the same time, protect the bead and the wires. The little wires are very short of course so you’ll have to find a way to hook them to longer wires that you can then plug into a box which will interpret the electrical signal into some useful temperature reading.
So here’s how it went. I was tasked with upgrading the probe for two reasons. Customers were asking for a smaller diameter. The second reason was that the vendor of the original bead decided that they would need me to order a minimum of twenty five hundred beads. That’s a ten year supply. I told them to piss off and went shopping. I finally found some components that would allow me to make a smaller probe. I found a vender that would supply them in the relatively small quantities that my company would need. I got some in and I did all the redesign work including and not limited to, updating prints and bills of materials and of course work instructions on how to build said probes. I hand built some prototypes and tested them under the wettest of conditions. Water. I mean gross, what were you thinking?
But over time a flaw was uncovered. It turns out that the smaller diameter opened the door for a new failure mode. I had to scramble to find a solution. Pseudo engineer leaps into action. I whipped out my trusty three dimensional modeler and modeled up the rectal probe to end all rectal probes. After a lot of internet shopping and phone calling and emailing I finally found someone who would make this wonderful new probe housing in the quantities that I wanted. Oh happy day.
For the animals comfort we use ptfe. That’s the abbreviation of the chemical name for a product called Teflon®. That name is the registered trade mark of 3M and should only be used when referring to their brand of ptfe products. We use a generic brand. Here’s the thing. Nothing sticks to that shit. I mean nothing. I’m trying to make this thing liquid proof and I’m fighting the physics of nothing sticks to this shit. Oh we’ll just use some super glue. Beep, nope, wrong answer. Nothing sticks. And heat? Oh yeah baby. Put the heat right to it and she ain’t going nowhere. It’s fucking Teflon®. Needless to say it was quite a challenge to find a way to put a bead inside and keep liquid outside and keep the whole thing together without relying on any type of adhesive. Not even duct tape.
So anyway where was I? Oh yeah, the new butt probe. With the aid of my trusty three dimensional modeler I think I have come up with a rather spanking solution to the problem. I hope the silence I’m hearing from the customers is the proof in the pudding so to speak.
As Steve Martin once sang, “I get paid for doing this.”
Disclaimer: First of all my views are not my company’s views and please don’t hold my company responsible for something stupid I may have said or may one day say. Secondly, I love animals and I don’t believe in the mistreatment of them (nor does the company I work for). From the unique perspective of the lab animal world that I hold I understand that lab animals are treated with a great deal of respect and care and kindness. My understanding is that they are higher on the social scale than grad students. The other thing I would say about research animals is this: Would you use animals to perfect a treatment that would save your child? Okay, I’m getting way too preachy or something.