Industries

Miniature Motors for Auto-Injectors

Auto-Injectors
Auto-Injectors

Challenge 

For long-term but intermittent dose regimens, drug therapy patients require small, discreet, and reliable injection devices that can be taken with them as they go about their day. Because high viscosity drugs or large volume injections require either a high force to be applied or long injection times, motorized auto-injectors are often preferred over manual syringes.

Portescap's high power density motors and linear motion assemblies help reduce the size of the auto-injector while maintaining high force for faster injection times or smaller diameter and less painful needles. Portescap's low noise gearboxes also improve discretion while administering a dose in public settings. Their high efficiency also provides greater freedom by increasing battery life or further reducing size by shrinking the battery.

Benefits 

  • High power density motors for smaller and more ergonomic auto-injector designs

  • Quality components for longer life and lower average cost of care

  • Low noise for discreet administration in public settings

  • Efficient motors for longer battery life or reduced charge time

  • Low starting voltage for low voltage battery operation

Customization Options 

  • Compact integrated linear solutions with gearing and encoder

  • Plastic or helical gears for additional noise reduction

  • Electrical magnetic coil customization to accommodate specific power inputs

  • High-level assembly integration

  • Custom output shaft and housing interface features

  • Ball bearing options for longer life under side loads

  • Cost optimized designs for high volume manufacturability

Motors for Infusion Systems Brochure

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[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) No-Load Speed{%BR%}(rpm) No-Load Current{%BR%}(mA) Output Power{%BR%}(W) Stall Torque{%BR%}(oz-in) Stall Torque{%BR%}(mNm) Torque up to{%BR%}(oz-in) Torque up to{%BR%}(mNm) Torque Constant (oz-in/A) Torque Constant (mNm/A)
0.31 8 11,760 2.5 0.7 0.17 1.20 0.14 0.95 1.02 7.2
10NS61 Athlonix 0.39 10 10,700 3.6 0.7 0.10 0.71 0.12 0.85 1.09 7.7
12G88 Athlonix 0.47 12 9,900 9.0 2.4 0.89 6.30 0.44 3.10 1.22 8.6
16DCP Athlonix - Precious Metal 0.63 16 9,259 3.3 1.3 0.48 3.37 0.34 2.39 3.00 21.2
16DCT Athlonix - Graphite 0.63 16 9,648 51.7 4.0 2.22 15.70 0.72 5.06 1.23 8.7
16DCT Athlonix - Precious metal 0.63 16 7,970 9.4 4.2 1.81 12.77 0.76 5.36 1.52 10.7
16DCT Athlonix - Precious metal 0.63 16 7,993 3.5 4.3 1.87 13.20 0.77 5.45 4.03 28.5
22DCT Athlonix - Graphite 0.86 22 8,490 67.1 8.4 9.20 64.80 1.60 11.50 0.90 6.7
22DCT Athlonix - Precious metal 0.86 22 8,131 15.7 9.4 11.30 79.60 1.90 13.30 2.00 14.1

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) Holding Torque, Min{%BR%}(mNm) Holding Torque, Min{%BR%}(oz-in) Detent Torque, Max{%BR%}(mNm) Detent Torque, Max{%BR%}(oz-in) Linear Travel Accuracy Steps per Revolution
20M020D 0.79 20 11.0 1.6 3.5 0.5 18 20

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) Holding Torque, Typical{%BR%}(mNm) Holding Torque, Typical{%BR%}(oz-in) Detent Torque, Max{%BR%}(mNm) Detent Torque, Max{%BR%}(oz-in) Linear Travel Accuracy Steps per Revolution
P010 064 0.39 10 1.8 0.25 0.9 0.13 15 24

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(in) Diameter{%BR%}(mm) Min. Holding Force @ rated current @ .001" (0.0254 mm) / Step{%BR%}(N) Min. Holding Force @ rated current @ .001" (0.0254 mm) / Step{%BR%}(oz) Min. Holding Force @ 0.001" (0.0254mm) / Step (Un-energized){%BR%}(N) Min. Holding Force @ 0.001" (0.0254mm) / Step (Un-energized){%BR%}(oz) Max. Travel @ 0.001" (0.0254 mm) / Step{%BR%}(mm) Max. Travel @ 0.001" (0.0254 mm) / Step{%BR%}(in) Linear Travel Accuracy
20DAM-K 0.79 20.0 31 110 20.9 75.0 15.0 0.6 ± 1 Step
20DAM-L 0.79 20.0 31 110 20.9 75.0 50.0 2.0 ± 1 Step

[value]

Specification + Detail
MetricEnglish
Model Diameter{%BR%}(mm) Diameter{%BR%}(in) Max Efficiency{%BR%}(%) Nominal Torque{%BR%}(mNm) Nominal Torque{%BR%}(oz-in) Max. Recommended Input Speed{%BR%}(rpm)
R10 10.0 0.39 70 100.0 14.0 10,000
B16 16.0 0.63 48 120.0 17.0 8,000