Bolin™ Chest Seal
A sterile, vented occlusive chest dressing with a patented triple one-way valve design on a rugged 6-inch disc — for open and tension pneumothorax from penetrating chest trauma.
What is the Bolin™ Chest Seal? A sterile, vented occlusive chest wound dressing (SKU BCS01; NSN 6510-01-549-0939) for open pneumothorax and management of tension pneumothorax from penetrating chest trauma. Its patented triple-valve design (US Patent 7,834,231) allows simultaneous venting of air and blood while preventing re-entry, mounted on a 6-inch rugged polyurethane disc with a jell-based hydrogel adhesive that adheres over hair and blood.
Key Specifications
| Manufacturer | Safeguard Medical (distributed by H&H Medical) |
| SKU / NSN | BCS01 | NSN 6510-01-549-0939 |
| Seal Diameter | 6 in (15.25 cm) |
| Disc Material | Rugged polyurethane — rigid enough to resist disc wrinkling on application |
| Valve Type | Triple one-way valve (vented) — air and blood out, prevents re-entry |
| Valve Configuration | Three valves in a straight line with foam stabilizer; valves adhered to valve cover |
| Adhesive Type | Thick jell-based hydrogel — adheres over hair and blood; removable/reapplicable |
| Dry Edge | Yes — dry perimeter reduces sticking to packaging or gloves |
| Packaged Dimensions | 8 in W × 8 in H × 0.5 in D |
| Weight | 2.0–2.1 oz |
| Latex Free | Yes |
| Operating Temperatures | 32°F–86°F (0°C–30°C) |
| Origin | USA |
| Patent | US Patent No. 7,834,231 |
What It Is
Penetrating chest trauma that opens the chest wall creates an open pneumothorax — the “sucking chest wound” — where air enters the pleural space through the wall defect, collapsing the lung and, if uncorrected, progressing to tension pneumothorax. The TCCC-recommended immediate response is to seal the wound with a vented chest seal while preparing for potential needle decompression.
The Bolin™ reflects multiple design iterations responding to field feedback: an enlarged pull tab improves one-handed gloved deployment; a dry exterior edge keeps the adhesive from sticking to packaging or gloves before placement; upgraded hydrogel improves adhesion in blood, sweat, and wet conditions; and the three one-way valves were repositioned into a straight line and secured with a foam stabilizer to lock valve position and reduce the risk of air bypassing the valves.
The triple-valve design is the defining clinical feature: three independent one-way flap valves allow simultaneous release of air and blood from the pleural space, addressing a limitation of single-valve designs where accumulated blood can occlude the valve and re-create tension physiology. The valves release with minimal pressure, and the 6-inch disc covers essentially any penetrating chest wound encountered in practice. The jell-based adhesive seals over hair and blood yet remains removable and reapplicable for reassessment or repositioning.
The Triple-Valve Advantage
Chest seals are either occlusive (non-vented) or vented. Current TCCC guidance favors vented seals because they help prevent tension pneumothorax while managing the wound — a non-vented seal on a casualty with any air leak can create or worsen tension physiology.
| Chest Seal Type | Air Venting | Blood/Fluid Drainage | Tension Risk |
|---|---|---|---|
| Occlusive (non-vented) | None | None | High — may create tension |
| Single-valve vented | Yes | Limited — blood can occlude single valve | Moderate — valve-occlusion risk |
| Bolin triple-valve | Yes — 3 independent valves | Yes — simultaneous air & blood release | Minimized — redundant valve paths |
Operating notes. Wipe excess blood and debris from the wound site to optimize adhesion; the hydrogel will still adhere over hair and residual blood. Apply one seal to each wound — penetrating chest trauma typically requires sealing both entry and exit wounds. Even with a properly applied vented seal, monitor for developing tension pneumothorax and escalate to advanced care per local protocol if respiratory distress recurs; the reapplicable adhesive allows removal and repositioning for reassessment. This summary is not a substitute for accredited training or local protocol.
Browse the complete Chest & Thoracic Supplies collection, or build out a complete trauma kit from IFAK Kits and Massive Hemorrhage Control.
Who Uses the Bolin Chest Seal
- Military medics & combat first responders — First-line treatment for penetrating chest trauma (gunshots, fragmentation) requiring rapid, one-handed seal application in austere environments.
- Law enforcement tactical teams — Carried in officer IFAKs for managing chest wounds during active-threat incidents or high-risk warrant service.
- EMS & paramedics — Provides field management of open pneumothorax with simultaneous air and blood venting before hospital handoff.
- TCCC & TECC instructors — Training standard for chest seal application technique, particularly the triple-valve mechanism and adhesive application.
- Search & rescue teams — Deployed in remote trauma kits where prolonged field care may require sustained chest wound management without repeat re-sealing.
Bolin Chest Seal vs. Other Vented Chest Seals
| Feature | Bolin (Triple Valve) | Single-Valve Vented Seal | Non-Vented (Occlusive) Seal |
|---|---|---|---|
| Valve count | 3 independent one-way valves | 1 one-way valve | None |
| Air venting | Yes — triple redundancy | Yes — single path | No |
| Blood/fluid drainage | Yes — simultaneous with air | Limited — valve occlusion risk | No |
| Tension pneumothorax risk | Minimized — redundant paths | Moderate — single-valve occlusion | High — may cause tension |
| Disc size | 6 in (15.25 cm) | Varies (typically 4–5 in) | Varies |
| Disc material | Rugged polyurethane — resists wrinkling | Varies | Varies |
| Adhesive | Thick hydrogel — works over hair/blood | Varies | Varies |
| Dry edge | Yes — prevents packaging stick | Varies | Varies |
| Patent | US Patent No. 7,834,231 | N/A | N/A |
Frequently Asked Questions
Q: Why does the Bolin have three valves instead of one?
A: The triple-valve design provides redundant venting pathways. If one valve becomes occluded by blood, clot, or debris — which is a documented failure mode in single-valve chest seals — the other two valves continue functioning. This redundancy substantially reduces the risk of re-accumulating tension physiology under the seal during patient transport, which is the most dangerous complication of single-valve occlusion.
Q: How do I apply the Bolin Chest Seal correctly?
A: Expose the wound and wipe the area with the enclosed cotton wipe to remove excess blood and debris. Open the packaging and position the seal over the center of the wound with the valves facing up. Remove the adhesive liner and apply the seal to the wound, firmly adhering all edges with no air bubbles — incomplete edge adhesion allows atmospheric air to bypass the seal. The kit includes a cotton wipe for wound prep. Training on actual application technique under stress is strongly recommended.
Q: Can the Bolin Chest Seal be removed and reapplied?
A: Yes. The thick jell-based hydrogel adhesive is designed to be removable and reapplicable, allowing the seal to be lifted for wound reassessment or repositioning if initial placement is suboptimal. This is a clinically relevant feature in prolonged field care scenarios where wound condition may change and reassessment is required. Reapplication should be done with care to maintain perimeter adhesion integrity.
Q: What is the difference between the Bolin and the Sentinel Chest Seal?
A: Both are vented chest seals from Safeguard Medical. The Bolin features a patented triple one-way valve system on a rugged 6-inch polyurethane disc with hydrogel adhesive. The Sentinel features a vented channel design with a 360-degree acrylate adhesive disc. The key clinical distinction is that the Bolin's three independent valves provide redundant drainage pathways, while the Sentinel's acrylate adhesive offers superior all-environment adhesion. Choice depends on operational context and user preference for valve architecture versus adhesive system.
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All products sourced from the actual brand manufacturer or authorized master distributors. CoTCCC recommendation status verified where applicable. Ships from MED-TAC International, Pembroke Pines, FL — clinician-founded, veteran-led, SDVOSB-certified.
Specifications coming soon. Contact us for detailed product information.
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