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Dynamic Vacuum System

Item #: 4R220

4R220 DVS vacuum pump for use with 6Y94 DVS liner

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Suggested HCPCS Coding: L5781
Restrictions to Coding and/or Coverage may apply
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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 DVS pump connects to the specific DVS liner magnetically 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.


Maximum Body Weight 330 lbs (150 kg)
Material Aluminum

4R220 Dynamic Vacuum System - Instructions for Use

Instructions for Use: 647G1112 (EN/DE/FR/IT/ES/PT/NL/SV/DA/NO/FI/PL/HU/CS/RO/HR/SL/SK/BG/TR/EL/RU/JA/ZH/KO)

Published Date: July 1, 2016

Vacuum Solutions Reimbursement Guide

Product Information: (EN)

Reimbursement: Toolkit

LL Prosthetic Documentation Packet

Product Information: (EN)

Reimbursement: Documentation Guide

Published Date: February 28, 2020

Vacuum Appeal Guide and Letter

Product Information: (EN)

Reimbursement: Toolkit

Elevated Vacuum Clinical Studies

Product Information: (EN)

Reimbursement: Clinical Studies

Dynamic Vacuum system - Fabrication of a prosthesis

Product Information: 646T215 (EN)

Published Date: July 1, 2016

DVS - Dynamic Vacuum Brochure

Product Information: (EN)

Published Date: September 1, 2018