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Triangle-tip jet knife with hood attachment: novel modification to endoscopic knife.

ABSTRACT: Video 1Triangle-tip jet knife with hood attachment: a novel modification over existing endoscopic knife.

SUBMITTER: Inoue H

PROVIDER: S-EPMC10577583 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature

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Triangle-tip jet knife with hood attachment: novel modification to endoscopic knife.

Inoue Haruhiro H Kimoto Yoshiaki Y Navarro Marc Julius MJ Nishikawa Yohei Y Shimamura Yuto Y

VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy 20230823 10

Video 1Triangle-tip jet knife with hood attachment: a novel modification over existing endoscopic knife. ...[more]

PMID: 37849777

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Electrosurgical knife with the water-jet function of tip-type during endoscopic treatment injection.

Project description:ObjectivesThis study aimed to objectively evaluate the water-jet-functioned electrosurgical knife injection performances in a desktop experiment.MethodsFive types of water-jet-functioned electrosurgical knives, including two injection styles of sheath-type (A: DualKnife J, KD-655L; B: FlushKnife, DK2620-J-B20S; C: Splash M-Knife, DN-D2718B; D: ISSEN, SN1650-20) and tip-type (E: ORISE ProKnife, M00519361) were evaluated. These knives were compared with an injection needle (Control: SuperGrip 25G) as a control. The injection speed under constant pressure and the injection efficiency for each knife against prepared porcine stomach mucosa were evaluated. The additional clear gel injections using an injection needle were observed using an indigo blue-colored gel to evaluate the difference between the locations of water-jet holes.ResultsFour types of knives, except for A, showed significantly higher water-jet speeds (A: 0.79 ± 0.03 g/20 s, B: 2.56 ± 0.05 g/20 s, C: 3.09 ± 0.06 g/20 s, D: 2.86 ± 0.05 g/20 s, and E: 1.79 ± 0.03 g/20 s) compared to that of the control (1.21 ± 0.03 g/20 s). Meanwhile, significantly higher efficacy of injection was found in the tip-type water-jet function knife, second to the injection needle (Control: 37.2% ± 35.5%, A: 20.9% ± 20.2%, B: 1.1% ± 2.2%, C: 6.2% ± 12.6%, D: 12.5% ± 15.6%, and E: 33.3% ± 32.2%). An additional injection experiment revealed that the injection with a piercing tip into the gel could achieve sufficient additional injection inside the stacked clear gel.ConclusionsThe tip-type water-jet function electrosurgical knife is preferable for effective submucosal injection during endoscopic treatments.

| S-EPMC9490017 | biostudies-literature

Endoscopic submucosal dissection using an integrated needle-type knife and insulated-tip knife in a single device

Project description:Video Video 1 Endoscopic submucosal dissection using a multifunctional endoscopic submucosal dissection knife.

| S-EPMC10020168 | biostudies-literature

Colorectal endoscopic submucosal dissection with use of a bipolar and insulated tip knife.

Project description: Not available

| S-EPMC6620361 | biostudies-literature

GI endoscopic submucosal dissection using a calibrated, small-caliber-tip, transparent hood for lesions with fibrosis.

Project description:Video 1The video shows the introduction of a calibrated, small-caliber-tip, transparent hood and its use in rectal, gastric, and duodenal endoscopic submucosal dissection with severe fibrosis.

| S-EPMC8267961 | biostudies-literature

Insulated tip/needle-knife endoscopic stricturotomy is safe and effective for treatment of non-traversable anorectal strictures.

Project description:Background and study aims The treatment of anorectal strictures is particularly challenging and historically focused on surgical resection and/or diversion. There are a number of endoscopic options, but repeat interventions are common. The use of the needle knife stricturotomy technique as an alternative to surgery in the treatment of a variety of strictures has been described, but its use for the treatment of severe anorectal and anopouch strictures has not been studied. Patients and methods Our Inflammatory Bowel Disease department's records were queried to identify patients with endoscopic non-traversable anorectal/anopouch strictures. Consecutive patients that underwent insulated tip/needle-knife endoscopic stricturotomy treatment were included. Primary outcome was immediate traversability of the treated stricture by the endoscope. Other outcomes included need for reintervention, 30-day post-procedure events, and follow-up period events. Results All strictures were immediately successfully traversed following endoscopic stricturotomy treatment. The mean time to endoscopic reintervention was 5.3 months, with the majority of these patients undergoing repeat stricturotomy. Over a mean follow-up period of 12.8 months, two patients (8%) required surgical intervention (resection with coloanal anastomosis with a colostomy and complete proctectomy) for refractory stricture disease following initial endoscopic stricturotomy. Seven patients (29%) in our study have not required any further reintervention throughout the study period. There were no 30-day post-procedure adverse events and no adverse post-procedure events. Conclusions Endoscopic stricturotomy is safe and effective in treating severe anorectal/anopouch strictures.

| S-EPMC10869208 | biostudies-literature

Insulated tip knife tunneling technique with clip line traction for safe endoscopic submucosal dissection of large circumferential esophageal cancer.

Project description: Not available

| S-EPMC6003901 | biostudies-literature

Endoscopic Submucosal Dissection Using a Novel Versatile Knife: An Animal Feasibility Study (with Video).

Project description:Background/aimsIn order to reduce the procedure time and the number of accessory changes during endoscopic submucosal dissection (ESD), we developed a novel versatile knife, which has the combined advantages of several conventional knives. The aim of this study was to compare the efficacy, safety, and histological quality of ESD performed using this novel versatile knife and a combination of several conventional knives.MethodsThis was an in vivo animal study comparing two different modalities of ESD in mini-pigs. Completion time of each resection was documented, and the resected specimens were retrieved and evaluated for completeness. To assess the quality control of the procedures and adverse events, detailed histopathological examinations were performed.ResultsA total of 18 specimens were dissected by ESD safely and easily (nine specimens using the new versatile knife; nine specimens by mixing conventional knives). All resections were completed as en bloc resections. There was no significant difference in procedure time between the 2 modalities (456 seconds vs. 355 seconds, p=0.258) and cutting speed (1.983 mm(2)/sec vs. 1.57 mm(2)/sec, p=1.000). The rate of adverse events and histological quality did not statistically differ between the modalities.ConclusionsESD with a versatile knife appeared to be an easy, safe, and technically efficient method.

| S-EPMC4260103 | biostudies-literature

Peroral Endoscopic Myotomy with the Stag Beetle Knife (SB Knife): Feasibility and Follow-Up.

Project description:BACKGROUND Recently, a stag beetle (SB) knife was introduced to reduce the difficulty of peroral endoscopic myotomy (POEM). The objective of this study was to evaluate the efficacy and safety of the SB knife. MATERIAL AND METHODS A total of 71 patients undergoing POEM with the SB knife for esophageal achalasia were included. We used esophagography, manometry, esophagogastroduodenoscopy (EGD), and Eckardt score to assess the utility and safety. RESULTS All cases were completed for POEM. The incidence of adverse events during the operation were 2.8%; however, all cases were treated conservatively. There was a vast improvement in clinical symptoms and endoscopic findings. The average Eckardt score was 6.9 before and 0.6 at 1 year after POEM (p<0.05). The average lower esophageal sphincter (LES) pressure before and 6 months after POEM were 44.34±14.83 mmHg and 19.14±6.74 mmHg (p<0.05), respectively. The average LES relaxation pressure before and 6 months after POEM was 12.11±5.02 mmHg and 3.22±2.29 mmHg (p<0.05), respectively. CONCLUSIONS POEM with the SB Knife is technically efficient and safe in treating achalasia and is associated with favorable short-term outcomes.

| S-EPMC6528546 | biostudies-literature

Ahila's Diathermy Round Knife for Endoscopic Ear Surgery.

Project description:As endoscopic ear surgery is evolving day by day there is a constant need for improvisation in terms of instrumentation, visualization and clear bloodless surgical field. The applications of Ahila's Diathermy Round Knife for Endoscopic Ear Surgery are presented. The development of Ahila's diathermy round knife will prevent shifting to two handed ear surgery or the need for Endo holders. This new instrument is a game changer in endoscopic ear surgery creating a clean incision and bloodless field to operate. Surgical Instruments represent a major financial asset to the healthcare facility. Careful attention to care, handling and sterilization is essential to avoid costly replacements, enhance patient and surgeon satisfaction, reduce costs and delays in the Operating room and enhance patient safety. Ahila's round diathermy knife may facilitate the performance of surgery and advance the art of Endoscopic surgery to a higher level.

| S-EPMC6224819 | biostudies-literature

Colorectal Endoscopic Submucosal Dissection: Performance of a Novel Hybrid-Technology Knife in an Animal Trial.

Project description:Endoscopic submucosal dissection (ESD) was developed for the removal of benign and early malignant lesions in the gastrointestinal tract. We aimed to evaluate the performance and safety of a novel high-pressure waterjet-assisted ESD knife in colorectal applications. Six female German Landrace pigs with an average weight of 62 kg (range 60-65 kg) were used in this prospective, randomized, and controlled study. Twenty-four ESDs were performed by three endoscopists: Twelve each with the new Erbe HYBRIDknife® flex T-Type (HK-T) and the Olympus DualKnife® J (DK-J), including six rectal and six colonic ESDs per instrument. The order of performance was randomized regarding anatomic position and instrument. As the primary endpoint, ESD knife performance characteristics were combined and rated on a 5-point Likert scale, with 5 Likert points (LP) representing the best response (5 = very good). The HK-T was rated significantly better than the DK-J (4.7 LP versus 4.4 LP, p = 0.0295), mainly because of HK-T injection ability (5 LP versus 3 LP, p < 0.0001) and hemostasis (5 LP versus 4 LP, p = 0.0452). There was no difference in procedure time (HK-T: 35 min versus DK-J: 34 min, p = 0.8005), resection diameter (3.1 cm versus 2.8 cm, p = 0.3492), injection volume (41 mL versus 46 mL, p = 0.5633), and complication rates. HK-T is as effective as DK-J in colorectal ESD in terms of dissection quality but has better injection and hemostatic properties. The impact of these technical advantages on the ESD treatment of patients with large superficial colorectal lesions remains to be clinically verified.

| S-EPMC10650536 | biostudies-literature

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