GI Endoscopy · 1 min read
Through-The-Scope (TTS) Hemoclips: Deployment Mechanics
Clinical Bottom Line
| Clip Characteristic | Mechanical Advantage | Target Application |
|---|---|---|
| Rotatable Function | Allows 1:1 radial adjustment before closure. | Approximating specific edges of mucosal defects. |
| Reopenable Capability | Permits multiple grasps before final deployment. | Securing difficult, tangential bleeding vessels. |
| Jaw Span (Wide Opening) | 11mm to 16mm spread. | Prophylactic closure of very large post-EMR resection beds. |
The Workhorse of GI Hemostasis
Through-the-Scope (TTS) Hemoclips have universally replaced thermal coagulation as the definitive primary intervention for upper and lower gastrointestinal bleeding. These metallic devices pinch and securely ligate bleeding vessels, mechanically mimicking surgical suturing but performed entirely through the 2.8mm instrument channel of a standard endoscope.
Deployment Strategy
Modern TTS clips possess advanced rotatable handles and reopenable jaws. This allows the endoscopist to precisely orient the prongs perpendicularly across the torn vessel. In cases of post-polypectomy mucosal defects, the "zipper technique" is frequently employed: deploying multiple sequential clips starting from the most distal edge of the defect, drawing the healthy mucosa together to completely seal the exposed submucosal layer, dramatically mitigating delayed bleeding risks.
Clinical guidelines summarized by the Gastroscholar Research Team. Last updated: 2026. This article is intended for physicians.
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