6

Syringe Ergonometrics/Design

Uniqueness of design*

−1: Uniform

0: Unique

Ÿ Hand friendly grip

Ÿ 360˚ rotatable barrel flange***

Ÿ 360˚ rotatable plunger flange***

Ÿ 360˚ rotatable luer lock system***

Ÿ 360˚ grading visibility***

Ÿ Aspiration friendly design

Point for each

(0 - 6)

Plunger tip dislocation from the rubber seal during aspiration

incident reported

−1: Yes, for each incident

0: No

Luer lock system dislocation accidents

−1: Reported, for each incident

0: Not reported

Grading marks and clear differentiation of varieties like concentrations and grades of cross-linking

−1: Lost, for each incident

0: Sticker on syringe

1: Printed on syringe

Each variety has a unique

syringe color/hue

−1: No

0: Yes

7

Substance

Ease of injection

−1: Heterogenous resistances experienced during injection using the same syringe

0: Homogenous but too easy or too hard considering concentration and cross-linking

1: Reasonable

Pliability vs Stability

−1: Major migration incident reported, for each incident

0: Still Pliable after one week

0: Integrated with tissues before one week

1: Pliable till the first weekends then it starts to integrate

Being inert

(Reactions or granuloma incidences)

−1: Reported, for each incident

0: Not reported