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Liner – Dynamic Vacuum

Item #: 6Y94
Partial covered liner for use with 4R220 DVS Dynamic Vacuum System.
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Suggested HCPCS Coding: L5679

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The new partial covered 6Y94=*-F DVS liner has soft TPE (Thermoplastic Elastomer) gel layer on the inside with partially exposed silicone layer on the outside for improved sealing and durability. The liner is thicker anterior for protection in boney areas and thinner posterior for ease of flexion and less bunching behind the knee. There is also extra fabric that can be reflected over socket edge for added sleeve protection.

This new partial covered liner is the preferred DVS liner.

This new (-F) version can be retrofitted to existing sockets.

The Dynamic Vacuum (DVS) is bridging the gap between valve and Harmony socket technology for transtibial fittings.

Integrating innovative design with simplicity, the Dynamic Vacuum reduces the movement between the limb and socket associated with limb volume fluctuations.

The 6Y94 DVS liner connects magnetically to the 4R220 DVS pump and a knee sleeve is used to seal the system. Vacuum is generated during walking and this elevated vacuum is maintained in both swing and stance phase as opposed to passive systems such as a one way valve that only generate suction during swing phase. This give the user enhanced control and fit during all phases.

6Y94 DVS liner made from TPE (Thermoplastic Elastomer) is thicker anterior and thinner posterior for protection and ease of flexion. Available in 6 sizes – S, M, MP, L, LP, XL

Try our Interactive Liner Selection Tool here:


Measure the residual limb circumference 4 cm and 30 cm above the distal end of the residual limb and select the liner size which corresponds to this measurement, or the next smallest size.
6Y94 Sizing Chart
Size 4 cm from distal end 30 cm from distal end Article Number:
Partial Textile Cover
S 6 in (15 cm) to 8.5 in (22 cm) 8 in (20 cm) to 10.5 in (27 cm) 6Y94=S-F
M 7 in (18 cm) t0 10 in (26 cm) 9 in (22 cm) to 14 in (36 cm) 6Y94=M-F
MP 8 in (20 cm) to 11 in (28 cm) 13 in (33 cm) to 20 in (50 cm) 6Y94=MP-F
L 10 in (25 cm) to 13 in (33 cm) 14 in (36 cm) to 21.5 in (55 cm) 6Y94=L-F
LP 11 in (28 cm) to 15.5 in (40 cm) 15.5 in (40 cm) to 23.5 in (60 cm) 6Y94=LP-F
XL 13 in (33 cm) to 17.5 in (45 cm) 17 in (43 cm) to 25.5 in (65 cm) 6Y94=XL-F


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DVS - Dynamic Vacuum Brochure

Product Information

PDF Document | Published: Sep 1, 2018

Liners - Instructions for Use

Instructions for Use

PDF Document | Published: Jan 12, 2021