A new study in IEEE Transactions on Medical Imaging describes SurgFusion-Net, an adaptive multimodal artificial intelligence model developed for automated assessment of technical skills during robotic-assisted surgery. Unlike systems trained primarily on simulated or dry-lab exercises, the investigators incorporated clinical suturing footage from robot-assisted hysterectomy and radical prostatectomy, combining RGB operative video with expert M-GEARS assessments, optical-flow information, and instrument-segmentation masks. The model was specifically designed to handle challenges encountered in real operative environments, including background tissue movement, instrument reflections, catheters, and differences between laboratory and clinical datasets. Across JIGSAWS and the two clinical datasets, SurgFusion-Net demonstrated improved correlation with expert skill scores compared with recent baseline methods.
Surgical Relevance: Objective AI-based video assessment could eventually complement faculty evaluation in robotic surgery training, providing reproducible measurements of technical performance and potentially supporting personalized feedback, competency assessment, credentialing, and curriculum development. However, broader multicenter and multi-procedure validation will be essential before such systems can be incorporated into formal surgical certification.
Source: PubMed – SurgFusion-Net Study
Low Intraoperative Perfusion Index Associated With Postoperative Delirium After Minimally Invasive Colorectal Surgery
A retrospective study published in Frontiers in Medicine evaluated 98 patients aged ≥65 years undergoing elective laparoscopic or robot-assisted colorectal surgery. Perfusion index (PI), obtained continuously through pulse oximetry at three-second intervals during anesthesia, was examined as a potential marker of peripheral microcirculatory perfusion. Postoperative delirium developed in 11 patients. Patients experiencing delirium demonstrated a lower mean intraoperative PI, with a threshold around 1.83 showing moderate predictive ability. The association remained after adjustment for clinically relevant factors including hemoglobin and albumin.
Surgical Relevance: Conventional mean arterial pressure may not completely represent tissue-level perfusion during pneumoperitoneum, Trendelenburg positioning, or lithotomy. Continuous PI monitoring could therefore become a simple additional parameter for identifying elderly colorectal MIS patients at increased risk of postoperative neurological complications. Importantly, this remains an observational association, and prospective trials are required before PI-guided hemodynamic interventions can be recommended.
Source: Frontiers in Medicine – Perfusion Index and Postoperative Delirium
Novel Laparoscopic Feeding Access Technique Reported During Minimally Invasive Esophagectomy
An article in Esophagus describes a laparoscopic feeding access technique using the gastric tube and round ligament of the liver during minimally invasive esophagectomy with retrosternal reconstruction. In a series of 75 consecutive patients, the feeding catheter was introduced through the gastric antrum toward the duodenum, secured to the gastric wall, covered with omentum, and subsequently exteriorized laparoscopically through the round ligament following reconstruction. The authors reported no catheter-related Clavien-Dindo grade III or higher complications, including small-bowel obstruction.
Surgical Relevance: Conventional feeding jejunostomy following esophagectomy can occasionally result in catheter-related complications, torsion, adhesions, or intestinal obstruction. This alternative approach may provide a useful enteral-access strategy in selected patients undergoing retrosternal reconstruction. Successful adoption requires meticulous catheter fixation, omental coverage, appropriate routing, and avoidance of tension or kinking.
Source: PubMed – Feeding Jejunostomy Technique During Minimally Invasive Esophagectomy
Gallstones and Acute Cholecystitis Represent an Underrecognized Surgical Burden in CKD and Dialysis Patients
A review in Clinical and Experimental Nephrology highlights the diagnostic and therapeutic challenges of gallstone disease and acute cholecystitis in advanced chronic kidney disease and end-stage kidney disease. Clinical presentation may be atypical, and significant biliary inflammation can occur without prominent liver-enzyme abnormalities. Diagnostic interpretation may also be complicated by factors including ceftriaxone-associated pseudolithiasis and GLP-1 receptor agonist therapy. These patients can experience substantial morbidity when biliary obstruction, infection, or endoscopic intervention is delayed.
Importantly, the review cautions against postponing definitive source control solely because a patient is dialysis-dependent. Depending upon physiological reserve and disease severity, treatment may include early laparoscopic cholecystectomy, gallbladder drainage, ERCP, or a staged approach.
Surgical Relevance: Surgeons should maintain a low threshold for investigating biliary disease in CKD and dialysis patients, differentiate uncomplicated cholecystitis from choledocholithiasis and cholangitis, and establish an early multidisciplinary treatment strategy. Renal comorbidity should influence perioperative optimization and procedural selection rather than automatically delaying necessary source control.
Source: PubMed – Gallstone Disease in CKD and Dialysis Review
Dual Light- and Magnetically Controlled Miniature Robots Point Toward Future Minimally Invasive Therapies
A study published in Proceedings of the National Academy of Sciences (PNAS) reports miniature robotic systems constructed from magnetic particle-doped liquid crystal elastomers. By integrating magnetic responsiveness with photothermal actuation, the miniature robots demonstrated rapid shape transformation, terrestrial jumping, controlled underwater propulsion, and directional steering according to the location of light irradiation. Experimental work also demonstrated targeted photothermal cancer-cell treatment, suggesting potential future applications in targeted drug delivery and minimally invasive therapeutic interventions.
Surgical Relevance: This technology remains preclinical and experimental and should not yet be regarded as a clinical surgical platform. Nevertheless, it illustrates the longer-term convergence of robotics, smart materials, targeted therapy, and minimally invasive intervention. Translation into clinical surgery will require reliable navigation in complex anatomy, controlled retrieval, biocompatibility, tissue safety, sterilization, real-time imaging integration, and rigorous regulatory validation.
Source: PubMed – Dual Light- and Magnetically Controlled Miniature Robots
Key Message
Today’s evidence demonstrates how minimally invasive surgery is expanding beyond operative technique alone. Artificial intelligence may improve objective surgical training, physiological monitoring may enhance perioperative safety, innovative enteral-access techniques may reduce morbidity, earlier intervention may benefit high-risk biliary patients, and miniature robotics could eventually create entirely new pathways for targeted minimally invasive therapy.
