Effects of Pulsed Dye Laser on the Biliary Wall of the Dog

Gagnon, Pierre; Ponchon, Thierry; Naouri, A; Berger, Françoise; Henry, Luc

doi:10.1051/jp4:1991771

Cited by 2 publications

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“…The reason for this lies in the potential risk of perforation in case of direct tissue contact as shown in animal experiments 1418 28 29 A new optical stone tissue detection system integrated into a rhodamine 6G dye laser allows immediate interruption of the laser pulse in case of suspected tissue contact. The pulse can be cut off up to 190 nanoseconds after its release.…”

Section: Discussionmentioning

confidence: 99%

Laser lithotripsy of difficult bile duct stones: results in 60 patients using a rhodamine 6G dye laser with optical stone tissue detection system

Hochberger¹,

Bayer

May

et al. 1998

Gut

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Introduction-Laser lithotripsy of bile duct stones has become a widely accepted endoscopic treatment modality for giant, impacted, or very hard stones. The procedure is usually carried out under direct endoscopic control in view of the potential risk of bile duct injuries in "blind" laser application. Aims-To investigate the use of a rhodamine 6G laser lithotriptor with an integrated optical stone tissue detection system (oSTDS). Methods-From 1 September 1991 to 7March 1997, 60 patients with giant or impacted common bile duct stones refractory to endoscopic papillotomy stone extraction, and mechanical lithotripsy were treated via the endoscopic retrograde route using a rhodamine 6G dye laser (595 nm, 2.5 µs, 80-150 mJ pp, Lithognost Telemit/Baasel Corp., Germany) with integrated oSTDS. In case of tissue contact oSTDS cuts oV the laser pulse after 190 ns (transmission of 5-8% of the total pulse energy). 47 patients (78.3%) were subjected to x ray targeting (oSTDS) alone, five (8.3%) to choledochoscope targeting alone, and eight (13.3%) to both techniques. Results-At the end of treatment 52 (87%) patients were completely stone-free. The only major complications included transient haemobilia, cholangitis, and pancreatitis in five patients. All five were successfully treated by conservative methods. Conclusions-Laser lithotripsy using the described rhodamine 6G dye laser with oSTDS seems to be safe and eVective and allows "blind" fragmentation of diYcult common bile duct stones under radiological control only. (Gut 1998;43:823-829)

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Section: Discussionmentioning

confidence: 99%

Laser lithotripsy of difficult bile duct stones: results in 60 patients using a rhodamine 6G dye laser with optical stone tissue detection system

Hochberger¹,

Bayer

May

et al. 1998

Gut

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“…Even in the case of pulsed laser systems a significant risk of duct perforation continued to exist, as was shown for the coumarin pulsed dye laser and the Nd/YAG laser in animal experiments. 27,35,42 …”

Section: Technologymentioning

confidence: 99%

Laser Lithotripsy

Langhorst

Neuhaus

2000

Digestive Endoscopy

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Effects of Pulsed Dye Laser on the Biliary Wall of the Dog

Cited by 2 publications

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Laser lithotripsy of difficult bile duct stones: results in 60 patients using a rhodamine 6G dye laser with optical stone tissue detection system

Laser lithotripsy of difficult bile duct stones: results in 60 patients using a rhodamine 6G dye laser with optical stone tissue detection system

Laser Lithotripsy

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