A prospective evaluation of U-clips for arterial microvascular anastomoses

Janae L. Maher, Kendall R. Roehl, Raman C. Mahabir

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

BackgroundThe nitinol U-clip (Medtronic, Inc.; Minneapolis, MN, USA) is similar to conventional suturing but eliminates knot tying, thereby decreasing ischemia time. This study is the first clinical trial of this new technology for arterial microsurgical anastomoses in free tissue transfer. MethodsWe performed a prospective clinical trial of nitinol U-clips for 25 consecutive arterial microsurgical anastomoses. Standard microsurgical techniques and instruments were used, and the primary outcome was free flap survival. The secondary outcomes were ischemia time, operating room (OR) time, number of clips used, and recipient/donor-site complications. Significant recipient/donor-site complications were defined as those requiring re-operation. Descriptive statistics were used and minimum follow-up was 3 months. ResultsAll anastomoses were successful (25/25). The most common etiology of the defect was cancer resection (92%), and 44% of the recipient vessels had been irradiated prior to surgery. Mean ischemia time was 29 minutes (range 12 to 54 minutes), and mean OR time was 7.4 hours. On average, seven U-clips were used per arterial anastomosis (range 5 to 12). At 3-month follow-up, there was a 100% flap survival rate with no significant recipient-site or donor-site complications. ConclusionThis study suggests that the nitinol U-clip provides rapid, reproducible microvascular arterial anastomoses.

Original languageEnglish (US)
Pages (from-to)543-547
Number of pages5
JournalJournal of Reconstructive Microsurgery
Volume28
Issue number8
DOIs
StatePublished - 2012
Externally publishedYes

Fingerprint

Surgical Instruments
Ischemia
Operating Rooms
Clinical Trials
Free Tissue Flaps
Technology
nitinol
Neoplasms

Keywords

  • free flap
  • microvascular anastomosis
  • U-clips

ASJC Scopus subject areas

  • Surgery

Cite this

A prospective evaluation of U-clips for arterial microvascular anastomoses. / Maher, Janae L.; Roehl, Kendall R.; Mahabir, Raman C.

In: Journal of Reconstructive Microsurgery, Vol. 28, No. 8, 2012, p. 543-547.

Research output: Contribution to journalArticle

Maher, Janae L. ; Roehl, Kendall R. ; Mahabir, Raman C. / A prospective evaluation of U-clips for arterial microvascular anastomoses. In: Journal of Reconstructive Microsurgery. 2012 ; Vol. 28, No. 8. pp. 543-547.
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