Chamber Comparison
O2Seven O2SevenvsPerry Baromedical Sigma Elite
O2Seven
O2Seven
1.5
ATA
—
Starting
—
Warranty
Perry Baromedical
Sigma Elite
3
ATA
$80K
Starting
1yr
Warranty
The Bottom Line
The Perry Baromedical Sigma Elite has clear advantages in max pressure, fda clearance, and clinical credibility. However, both chambers sit in the Clinical Grade tier, so consider your specific requirements before deciding.
Key Differences
O2Seven
1.5 ATA
Perry Baromedical
3 ATA
Higher pressure enables more clinical protocols. The Perry Baromedical Sigma Elite reaches 3 ATA, which supports FDA-approved treatment protocols.
O2Seven
Not FDA Cleared
Perry Baromedical
FDA Cleared
FDA clearance matters if you need insurance reimbursement, plan to operate a clinical facility, or want the highest safety assurance. For home wellness use, it's less critical.
O2Seven
3/10
Perry Baromedical
9/10
This score reflects published studies, certifications, and clinical adoption. Higher scores indicate stronger evidence backing the manufacturer's claims.
Who Should Buy Which?
Best for
Perry Baromedical Sigma Elite
Modern hospitals, EMR-integrated facilities, flagship clinical programs
View full details →Full Specification Comparison
| Specification | O2Seven O2Seven | Perry Baromedical Sigma Elite |
|---|---|---|
| Chamber Type | Hard-Shell Monoplace | Hard-Shell Monoplace |
| Performance Tier | Clinical Grade | Clinical Grade |
| Max Pressure | 1.5 ATA | 3 ATA★ |
| Oxygen Delivery | mask/cannula | 100%-medical-grade |
| O₂ Concentration | Up to 95% | 100% via BIBS with Duke hoods |
| Capacity | 1-person | 1-person |
| Weight | — | 2,200 lbs |
| Interior Dimensions | — | Premium monoplace |
| Portability | fixed-installation | fixed-installation |
| FDA Cleared | No | Yes (#Multiple 510(k)s)★ |
| CE Marked | No | Yes★ |
| Made In | Japan | United States |
| Price | Contact manufacturer | $80,000 - $130,000 |
| Warranty | — | 1 year |
| Clinical Score | 3/10 | 9/10★ |
| Brand Established | — | 1956 |
| Climate Control | No | Yes★ |
| Communication System | No | Yes★ |
| Emergency Features | — | Emergency depressurization, fire suppression, touch-screen controls, EMR integration |
O2Seven O2Seven — Standout Features
Perry Baromedical Sigma Elite — Standout Features
Interested in either chamber?
Request quotes from both manufacturers and compare real pricing.
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