For every ventilator used there needs to be about 3-4 electronic syringe pump to keep patients sedated, keep up blood pressure, and several other drugs that are necessary during anaesthesia. The pharmaceuticals are given constantly during long time (1-2 weeks) and precision and dose titration is important. There will be a big shortage of such syringe pump systems during the covid-19 peak.
Important update: At Skåne University Hospital the need seems as of 2020-04-09 to be possible to fill by standard supply chains. The project is therefore temporarily halted. If you work at a hospital and see no other options for supply chains to provide syringe pumps please let us know and then the project will be revived
There are quite mature open source design available for syringe pumps. One such is the Y-struder project. The aim of this project is to 1) Help Swedish healthcare to deal with peak Covid-19 by manufacture syringe pumps, 2) provide a well documented open source project for design of syringe pumps for emergency medical usage.
Based on the above we are now gearing this project up and are seeking for more volunteers with a wide range of competencies, contact Einar Heiberg and David Nordlund. The aim is to have an early prototype to show in two weeks (2020-04-21).
Next step is kick-off meeting on 2020-04-08.
Here is an article how_safety_features_make_or_break_infusion_pump_design.pdf on principles for syringe pump design (paper is on both syringe pump and volume pump).
One way to achieve a user interface that can be wiped off with disinfectant is to use a membrane keyboard for user input. They seem to typically be available in matrix shapes of sizes 1×4, 3×4 and 4×4.
Electrokit has a few self-adhesive models with pre-marked symbols: https://www.electrokit.com/produkt-kategori/omkopplare/tangentbord/
Elfa Distrelec has keyboards in the same shape, also self-adhesive, with customizable key symbols: https://www.elfa.se/sv/relaeer-och-stroemstaellare/stroemstaellare/tangentbord/c/cat-DNAV_PL_050104?q=*&filter_Buyable=1&filter_Category3=Tangentbord&filter_Manufacturer=Apem
On this page there is a stub for a test protocol
|Assignment of teams||2020-04-09|
|First prototype; no casing, set flow in ml/min, occlusion detection||2020-04-21|
|Second prototype; casing and “keypad”||-|
|Third prototype; set ml/min/kg, display of pharmaceutical||-|
|Start of production||-|
|Name||Org||Role / competence|
|Einar Heiberg||3DPrint SUS||Project leader|
|David Nordlund||Klinfys Lund University / SUS||Deputy project leader, clinical input|
|Erik Ekbom||3DPrint SUS||3D printing|
|Philip Bernborg||3DPrint SUS||3D printing|
|Muris Imsirovic||3DPrint SUS||CAD, 3D printing|
|Per Nordqvist||Medicinsk Teknik SUS||Risk analysis|
|Erik Cederberg||3D verkstan||CAD|
|Azal Alothmani||Axis||Electronics, programming, design|
|Leif Barendt||Lomma Elektronik design||Electronic CAD and development|
We need to organise into sub team, suggested teams are