Dynamic Vacuum System
Item #: 4R220Overview
The 4R220 Dynamic Vacuum (DVS) is bridging the gap between valve and Harmony socket technology for transtibial fittings.
The 4R220=1 allows for more flexibility in alignment options compared to the 4R220 DVS pump.
- The 4R220=1 allows for offset of separate adapter plate in fabrication (the 4R220 DVS pump includes a 4-hole distal connection)
- Does not have a 4-hole distal connection so additional adapter required
- Pump must still be placed directly in line with socket to allow proper liner/piston connection and pumping action
4R220=1 scope of delivery:
- 4R220=1 pump, including fabrication dummy and special grease.
- DOES NOT include a 4-hole distal connection piece. Please order additional socket adapter separately.
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.
Specifications
| Article Number | 4R220 | 4R220=1 |
|---|---|---|
| Maximum Body Weight | 330 lbs (150 kg) | 330 lbs (150 kg) |
| Material | Aluminum | Aluminum |
| Build Height | 31 mm | 40 mm |
Accessories
Spare parts
Documents
4R220 Dynamic Vacuum System - Instructions for Use
Instructions for Use
PDF Document | Published: Jul 10, 2020
Lower Limb Prosthesis Documentation Guide for Medicare and Medicare Advantage
Reimbursement
PDF Document | Published: Dec 2, 2024
Dynamic Vacuum system - Fabrication of a prosthesis
Product Information
PDF Document | Published: Jul 1, 2016
Vacuum Solutions Reimbursement Guide
Reimbursement: Toolkit
Reimbursement
PDF Document | Published: Feb 5, 2026
Vacuum Evidence Essentials
Reimbursement: Clinical Studies
Reimbursement
PDF Document | Published: Jan 23, 2025



