Animal experimental study of compression anastomosis ring for low anterior resection.
- Author:
Jian-Wei LIANG
1
;
Zheng WANG
;
Xing-Mao ZHANG
;
Da-Wei ZHAN
;
Zhi-Xiang ZHOU
Author Information
- Publication Type:Journal Article
- MeSH: Anastomosis, Surgical; instrumentation; Animals; Female; Male; Models, Animal; Nickel; Rectal Neoplasms; surgery; Rectum; surgery; Swine; Swine, Miniature; Titanium
- From: Chinese Journal of Gastrointestinal Surgery 2011;14(5):333-335
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the feasibility and safety of nickel-titanium compression anastomosis ring (CAR27) in colorectal anastomosis after low anterior rectal resection in animal models.
METHODSEnd-to-end colorectal anastomosis was performed using CAR27 in 6 experimental pigs after resection of the middle and lower third of the rectum. The animals were observed postoperatively for up to 56 days. Five pigs were sacrificed at day 14 and the other at day 56. Distance from anal verge to anastomosis and anastomotic circumference were measured. Histopathologic examination was performed.
RESULTSThe median distance from anal verge was 5.3(4-6) cm. No anastomotic leak or other complications were observed. All the pigs recovered and gained weight. In 5 animals sacrificed at day 14, the mean circumference of the anastomosis was 6.8(6.5-7.0) cm, and histopathological examination showed mild inflammatory reaction and fibrosis. In the one sacrificed at day 56, the circumference expanded to 9.3 cm, and no inflammation and fibrosis were observed. Minor adhesion was noticed in only one pig, while smooth and intact serosa in the anastomosis was seen in the rest of the animals.
CONCLUSIONCAR27 is a promising device for mid and low colorectal anastomosis.