A novel self-shaping magnetic compression anastomosis ring for treatment of colonic stenosis

Zhang, Miaomiao; He, Shuixiang; Sha, Huanchen; Xue, Hairong; Lv, Yi; Yan, Xiaopeng

doi:10.1055/a-2183-8942

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…In clinical practice, endoscopic balloon dilation, stent implantation, and surgical procedures can be used to treat rectal stenosis through single access. Our recently developed deformable self-assembled magnetic anastomosis ring (DSAMAR) also has the potential to be used in patients with single-pass rectal stenosis 27 – 29 . This study offers a potential treatment method for such patients.…”

Section: Discussionmentioning

confidence: 99%

Application of Y–Z deformable magnetic ring for recanalization of transanal single-access rectal stricture

Zhang,

Zhuang,

Mao

et al. 2024

Sci Rep

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Magnetic compression anastomosis has been reported to have remarkable clinical outcomes. Here, we tested the applicability of a Y–Z deformable magnetic ring (DMR) for non-surgical manipulation of rectal stenosis (RS) in a beagle dog model under a transanal single-access condition. RS was modeled in 8 beagle dogs using partial ligation with silk thread. Under X-ray guidance, the Y–Z DMR was positioned at the proximal and distal ends of the RS, and the magnetic ring was bent into an “O” shape, such that the two rings were magnetically attracted. Operation time, complications during or after operation, and discharge time of the magnetic rings were recorded. The anastomosis bursting pressure was measured two weeks after removing the rings, and its formation was assessed through gross and histological examination. Partial ligation with a silk thread successfully established the canine RS model. After Y–Z DMR installation, the magnetic ring was successfully reconfigured from an “S” to an “O” shape. Strong attraction existed between the rings. The operation time was 9–15 min (average: 11.75 ± 1.98 min). No rectal bleeding or perforation occurred during or after operation. The ring was naturally expelled 7–10 days after surgery. A pressure of > 300 mmHg was recorded at the point of anastomosis rupture. The rectal anastomosis appeared to have healed properly on the surface, which was confirmed histologically, signifying the success of this procedure. A Y–Z DMR facilitated the successful recanalization of transanal single-channel RS without needing surgery in an animal model.

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Section: Discussionmentioning

confidence: 99%

Application of Y–Z deformable magnetic ring for recanalization of transanal single-access rectal stricture

Zhang,

Zhuang,

Mao

et al. 2024

Sci Rep

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“…To the best of our knowledge, MCA between the abdominal sinus and the duodenum has not been reported. The development of flexible magnet designs and placement methods has enabled the successful use of the MCA technique for the treatment of some complex digestive tract stenosis[ 11 ].…”

Section: Discussionmentioning

confidence: 99%

Magnetic compression anastomosis to restore biliary tract continuity after obstruction following major abdominal trauma: A case report

Zhang,

Tao,

Sha

et al. 2024

World J Gastrointest Surg

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BACKGROUND The combination of magnetic compression anastomosis (MCA) and endoscopy has been used to treat biliary stricture after liver transplantation. However, its use for the treatment of complex biliary obstruction after major abdominal trauma has not been reported. This case report describes the successful use of MCA for the treatment of biliary obstruction resulting from major abdominal trauma. CASE SUMMARY A 23-year-old man underwent major abdominal surgery (repair of liver rupture, right half colon resection, and ileostomy) following a car accident one year ago. The abdominal drainage tube, positioned at the Winslow foramen, was draining approximately 600-800 mL of bile per day. During the two endoscopic retrograde cholangiopancreatography procedures, the guide wire was unable to enter the common bile duct, which prevented placement of a biliary stent. MCA combined with endoscopy was used to successfully achieve magnetic anastomosis of the peritoneal sinus tract and duodenum, and then a choledochoduodenal stent was placed. Finally, the external biliary drainage tube was removed. The patient achieved internal biliary drainage leading to the removal of the external biliary drainage tube, which improved the quality of life. CONCLUSION Magnetic compression technique can be used for the treatment of complex biliary obstruction with minimal operative trauma.

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“…Magnetic compression anastomosis (MCA) has been previously used for the treatment of colorectal stenosis 1 2 and pediatric esophageal stenosis or atresia 3 4 . However, there have been no reports of MCA being used for the treatment of esophageal stricture after endoscopic submucosal dissection (ESD) in adults.…”

Section: Figmentioning

confidence: 99%

Treatment of refractory esophageal stenosis after endoscopic submucosal dissection with magnetic compression anastomosis

Zhang,

Sha,

et al. 2024

Endoscopy

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A novel self-shaping magnetic compression anastomosis ring for treatment of colonic stenosis

Cited by 11 publications

References 3 publications

Application of Y–Z deformable magnetic ring for recanalization of transanal single-access rectal stricture

Application of Y–Z deformable magnetic ring for recanalization of transanal single-access rectal stricture

Magnetic compression anastomosis to restore biliary tract continuity after obstruction following major abdominal trauma: A case report

Treatment of refractory esophageal stenosis after endoscopic submucosal dissection with magnetic compression anastomosis

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