In colorectal surgery, eradicating the fistula and maintaining continence are still complex challenges for a colorectal surgeon. A minimally invasive method using a novel device was performed to consecutively treat 14 patients with anal fistula from August 2008 to November 2009. After a follow-up period of 36 months, 13 patients achieved successful closure of their fistula tracts, and recurrence occurred only in one patient. Recurrence was due to the delay of dressing change. No patient had interference with continence, and no major intra- and postoperative complications were identified. Using the novel device with invasive methods can be a promising alternative for managing anal fistulas.

The nanobore fiber (NBF) is a promising nanoscale optofluidic platform due to its long nanochannel and unique optical properties. However, the applications of NBF are only based on its original fiber geometry without extra functionalities so far, compared with various telecom fiber devices, which may limit its wide applications. Here, the first demonstration of NBF-based fiber Bragg grating (FBG) is introduced by the femtosecond (fs) laser direct writing technique and the ultraviolet (UV) laser phase mask technique, respectively. Moreover, the FBG fabricated via the UV laser was optimized, achieving high reflectivity of 96.89% and preserving of the open nanochannel simultaneously. The NBF-based FBGs were characterized in terms of temperature variation and different liquid-infiltration, showing the high potential in nanofluidic applications.

The nanobore fiber (NBF) is a promising nanoscale optofluidic platform due to its long nanochannel and unique optical properties. However, the applications of NBF are only based on its original fiber geometry without extra functionalities so far, compared with various telecom fiber devices, which may limit its wide applications. Here, the first demonstration of NBF-based fiber Bragg grating (FBG) is introduced by the femtosecond (fs) laser direct writing technique and the ultraviolet (UV) laser phase mask technique, respectively. Moreover, the FBG fabricated via the UV laser was optimized, achieving high reflectivity of 96.89% and preserving of the open nanochannel simultaneously. The NBF-based FBGs were characterized in terms of temperature variation and different liquid-infiltration, showing the high potential in nanofluidic applications.

The nanobore fiber (NBF) is a promising nanoscale optofluidic platform due to its long nanochannel and unique optical properties. However, the applications of NBF are only based on its original fiber geometry without extra functionalities so far, compared with various telecom fiber devices, which may limit its wide applications. Here, the first demonstration of NBF-based fiber Bragg grating (FBG) is introduced by the femtosecond (fs) laser direct writing technique and the ultraviolet (UV) laser phase mask technique, respectively. Moreover, the FBG fabricated via the UV laser was optimized, achieving high reflectivity of 96.89% and preserving of the open nanochannel simultaneously. The NBF-based FBGs were characterized in terms of temperature variation and different liquid-infiltration, showing the high potential in nanofluidic applications.