Endotherapy Devices: A 2026 Guide to Biliary Stents and Hemostasis Clips

Key Takeaways

  • Clinical Bottom Line
  • The Expansion of Endotherapy (2026)
  • Advanced Hemostasis & Closure Devices
  • Lumen-Apposing Metal Stents (LAMS)

Clinical Bottom Line

Product CategoryClinical IndicationKey 2026 Innovations
Hemostasis ClipsMechanical closure of bleeding vessels, mucosal defects, or post-polypectomy prophylactic suturing.Through-the-scope (TTS) rotational capabilities, “re-openable” jaws, and oversized multi-prong clips (e.g., OTSC) for massive defects.
Biliary & Enteric StentsMaintaining luminal patency in malignant strictures (e.g., cholangiocarcinoma, pancreatic cancer) or draining collections.Lumen-Apposing Metal Stents (LAMS) with electrocautery-enhanced delivery for direct single-step EUS-guided drainage.
Tattooing AgentsPre-operative localization of colorectal lesions for surgical resection.Pre-mixed, sterile carbon-black suspensions (e.g., SPOT-Ex) minimizing preparation time and contamination risk.
Endoscopic Submucosal Dissection (ESD) KnivesEn bloc resection of large, early-stage mucosal neoplasms.Hybrid knives with integrated water-jet injection systems to maintain the submucosal cushion without instrument exchange.

The Expansion of Endotherapy (2026)

The field of gastrointestinal endoscopy has completely transcended its diagnostic origins. Driven by radical advancements in material science and engineering, “endotherapy”—the use of sophisticated instruments deployed through the working channel of an endoscope—now allows gastroenterologists to perform highly complex, organ-sparing surgeries entirely from within the lumen. The most significant product advancements currently shaping clinical pathways are focused on complex hemostasis and transluminal drainage.

Advanced Hemostasis & Closure Devices

Over-The-Scope Clips (OTSC)

While traditional Through-The-Scope (TTS) clips are excellent for minor arterial bleeds or small mucosal defects post-polypectomy, they are frequently insufficient for massive, spurting arterial bleeds (e.g., Dieulafoy’s lesions) or full-thickness perforations. The Over-The-Scope Clip (OTSC), resembling a small, incredibly powerful bear-trap mounted on a transparent cap at the tip of the endoscope, has revolutionized endotherapy. By employing a twin-grasper or suction to pull a massive volume of tissue into the cap, the OTSC deploys a full-thickness nitinol brace, effectively performing a surgical-grade closure of large perforations or fistulas without the need for an open laparotomy.

Endoscopic Suturing Systems

Devices like the Apollo OverStitch™ system have brought true full-thickness suturing to flexible endoscopy. Mounted on a dual-channel endoscope, these systems allow endoscopists to drive curved needles and secure anchors to close massive EMR/ESD defects, perform endoscopic sleeve gastroplasties (ESG) for bariatric weight loss, or repair complex gastro-gastric fistulas following gastric bypass surgery.

Lumen-Apposing Metal Stents (LAMS)

Perhaps the single most disruptive product category in advanced endoscopy is the Lumen-Apposing Metal Stent (LAMS), such as the AXIOS™ stent. These short, wide-flanged stents look like small metal dumbbells.

  • The Innovation: Deployed under Endoscopic Ultrasound (EUS) guidance, modern LAMS utilize an electrocautery-enhanced delivery system. The tip of the catheter burns directly through the stomach wall and directly into an adjacent target (like a massive pancreatic pseudocyst or the gallbladder) in one fluid motion without requiring prior wire access or tract dilation.
  • Clinical Impact: LAMS allow for single-step EUS-guided drainage of symptomatic pancreatic fluid collections and even direct cholecystogasrostomy (draining a severely infected gallbladder into the stomach) for patients who are entirely unfit for surgical cholecystectomy.

Surgical-Grade Resection Devices (ESD)

Endoscopic Submucosal Dissection (ESD) requires meticulous dissection of the submucosal layer to remove large tumors en bloc (in one single piece) to ensure totally clear oncological margins. Modern ESD devices heavily favor the Hybrid Knife. These specialized electrosurgical scalpels feature an ultra-fine water-jet channel built directly into the needle tip. This allows the endoscopist to continuously inject high-pressure saline to lift the tumor away from the muscle muscle layer, then instantly apply cautery to dissect the tissue—all without withdrawing the instrument, massively reducing procedure time and improving safety.


Technological review compiled by the Gastroscholar Research Team. Last updated: April 16, 2026. This article is intended for physicians and surgical trainees.

Written by Dr. gastroscholar.com, MD, FACG

Clinical researcher and practicing Gastroenterologist contributing to advancing GI knowledge and endoscopic techniques.

Fact Checked Updated Apr 16, 2026
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