Cryogun for Dermatology — 2026 Buyer's Guide for Cryotherapy in Practice

Cryotherapy for warts, seborrheic keratoses, actinic keratoses, and other benign skin lesions is one of the most performed dermatology procedures in primary care and dermatology practice. A quality portable cryogun (liquid nitrogen sprayer) makes this procedure fast, reproducible, and profitable. This 2026 guide covers cryogun specifications, tip options, indications, safety, and how to build a cryotherapy program for a family medicine, dermatology, or urgent care setting.

Quick answer

For a primary care, family medicine, or general dermatology practice starting or upgrading a cryotherapy program:

• 350ml portable cryogun — fits typical clinic workflow, one refill per week for a busy practice
• Multi-tip system (5-6 tips) — covers everything from pinpoint warts to broader keratoses
• Direct liquid nitrogen spray — more reproducible than cotton-tip application
• Bell-and-cone attachments — for controlled area cryotherapy

What a cryogun actually does

A portable cryogun is a pressurized liquid nitrogen sprayer that delivers -196°C liquid nitrogen directly to skin lesions. The tissue freezes rapidly, forming intracellular ice crystals that destroy cells during freeze-thaw cycles. Two freeze-thaw cycles are typically applied for durable treatment.

Compared to older techniques:

• vs cotton-tip applicator: more precise, reproducible, faster, better patient tolerance
• vs bulk liquid nitrogen pour: safer, no risk of splashing or excessive application
• vs Histofreezer (dimethyl ether-propane): more effective for larger lesions and thick keratoses

The 5 clinical indications where cryotherapy shines

1. Common warts (verrucae vulgaris)

Standard technique: two 10-15 second freeze-thaw cycles per lesion. Return in 2-4 weeks if not resolved. Total 2-3 treatments typical for full resolution.

2. Plantar warts

Longer freeze times (20-30 second cycles) due to thicker plantar skin. Pre-treatment paring with a #15 blade often improves outcomes. May require 3-6 treatments.

3. Seborrheic keratoses

Very common, benign pigmented lesion. Short freeze cycle (5-10 seconds) usually sufficient. High patient satisfaction — quick, clean, in-office procedure.

4. Actinic keratoses

Pre-malignant sun-damaged skin lesion. Standard freeze cycles (10-15 seconds). Often multiple lesions treated per visit. Photograph pre- and post-treatment for medical record.

5. Molluscum contagiosum

Pediatric-friendly technique with short brief spray (2-5 seconds). Often multiple lesions treated per visit. Watch for scarring risk in cosmetically sensitive areas.

Cryogun specifications explained

Tank capacity

• 350ml (portable): ideal for primary care and dermatology — covers ~20-40 lesions per fill
• 500ml (semi-portable): for higher-volume dermatology practices
• 1L+ (stationary): for hospital-based dermatology, plastic surgery, or MOHS clinics

350ml is the sweet spot for most practices — portable enough to move between rooms, large enough for a full day of treatments.

Interchangeable tips

Typical multi-tip system includes:

• Pinpoint tips (0.5-1mm): small warts, molluscum, actinic keratoses
• Standard tips (2-3mm): average-sized lesions
• Wide spray tips (4-6mm): larger keratoses, actinic damage areas
• Cone attachments: concentrated freeze on defined area
• Bell attachments: focal freeze without splash to surrounding skin

Six-tip systems cover essentially all dermatology cryotherapy needs.

Trigger and safety

• Locking trigger prevents accidental discharge
• Pressure relief valve for safety
• Ergonomic grip for prolonged use
• Weight-balanced for one-handed operation

Liquid nitrogen supply

You'll need a source of liquid nitrogen locally. Options:

• Local medical gas supplier: most reliable, deliver-and-swap dewars, typical $150-300/month for practice
• Compressed air distributor: some carry liquid nitrogen for medical use
• Storage dewar (10-20L): practice keeps this on-site, medical gas company refills

Verify supplier before purchasing a cryogun — no LN supply = no cryogun use.

Building a cryotherapy program — practice math

• Cryogun (SciMed Mini Cryogun 350ml + 6 tips): $499.99
• Liquid nitrogen supply (monthly): $150-300
• Time per treatment: 2-5 minutes
• Reimbursement per lesion: CPT 17110 (up to 14 benign lesions) = ~$40-90 depending on payer
• Typical single-treatment case: 2-4 lesions = $80-360 revenue

Break-even: 6-8 treatments to cover cryogun cost. High-volume practice recovers cost in first month.

Safety considerations

• Never point cryogun at eyes or delicate mucosa
• Warn patient about temporary discomfort during freeze
• Ensure adequate ventilation — liquid nitrogen displaces oxygen (rare risk at practice-sized volumes but relevant)
• Wear safety glasses when refilling from dewar
• Store cryogun in upright position when not in use
• Do NOT use on cold-sensitive patients (Raynaud's, cryoglobulinemia) without provider judgment
• Depigmentation risk in darker skin tones — counsel patients about this before treatment
• Blistering, transient pain, and mild scarring are known side effects

Practice acquisition considerations

• Verify local liquid nitrogen supplier before purchase
• Verify practice has proper storage (small storage dewar or dedicated area for cryogun)
• Train staff on cryogun use per manufacturer instructions
• Document consent and treatment in medical record
• Consider clinical photography for pre-/post- documentation

Frequently asked questions

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