1,371 results match your criteria clip diameter


Safety and efficacy outcomes at 1 year after MitraClip therapy for percutaneous mitral valve repair in patients with severe mitral regurgitation: the Egyptian experience.

Egypt Heart J 2021 May 3;73(1):42. Epub 2021 May 3.

Department of Cardiology, Faculty of Medicine, Zagazig University, Zagazig, 44519, Egypt.

Background: Our aim was to assess safety and efficacy outcomes at 1 year after MitraClip for percutaneous mitral valve repair in patients with severe mitral regurgitation. Twenty consecutive patients with significant MR (GIII or GIV) were selected according to the AHA/ACC guidelines from June 2016 to June 2019 and underwent percutaneous edge-to-edge mitral valve repair using MitraClip with a whole 1 year follow-up following the procedure. The primary acute safety endpoint was a 30-day freedom from any of the major adverse events (MAEs) or rehospitalization for heart failure. Read More

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Gastrointestinal defect closure using a novel through-the-scope helix tack and suture device compared to endoscopic clips in a survival porcine model (with video).

Endosc Int Open 2021 Apr 12;9(4):E572-E577. Epub 2021 Apr 12.

Division of Gastroenterology & Hepatology, Mayo Clinic, Rochester, Minnesota, United States.

Endoscopic resections are associated with bleeding and perforation and may be managed with through-the-scope (TTS) clips, over-the-scope clips and endoscopic suturing. The aim of this preclinical study was to compare technical success of closure using a novel TTS tissue helix tack and suture device (X-Tack) to TTS clips in a porcine model. Four subjects underwent 40 mucosal resections, diameter range 25-50 mm, in the stomach (n = 24) and colon (n = 16). Read More

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Percutaneous nephrolithotomy in children.

Pediatr Surg Int 2021 Apr 15. Epub 2021 Apr 15.

Department of Urology, JN Medical College, KLE Academy of Higher Education and Research (Deemed-To-Be-University), JNMC Campus, Belagavi, Karnataka, 590010, India.

Introduction: The high success rates of percutaneous nephrolithotomy (PCNL) in the clearance of large renal calculi has made it a primary mode of surgical management in adults. Similarly, in children too PCNL has been gaining ground and the indications for the same are on the rise. We retrospectively evaluated the safety and efficacy of this technique, in children below 18 years of age. Read More

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Over-the-Scope Clip-Associated Endoscopic Muscular Dissection for Seven Cases of Small Gastric Submucosal Tumor: A Video-Based Case Series.

Gastroenterol Res Pract 2021 19;2021:4578191. Epub 2021 Mar 19.

Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530007 Guangxi Province, China.

Objectives: To evaluate the methodology, feasibility, safety, and efficacy of a novel method called over-the-scope clip- (OTSC-) associated endoscopic muscular dissection for small GSMT.

Methods: A pilot study on small GSMT diameter ≤ 1 cm was performed. OTSC-associated endoscopic muscular dissection was based on the requirement of OTSC apparatus and ESD technique; after ligaturing the bottom of small GSMT by OTSC, ESD was performed to resect the tumors, and the wounds of ESD were closed by clips finally. Read More

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A Novel Technique for Transpalatal Hypophysectomy.

J Neurol Surg B Skull Base 2021 Apr 18;82(2):216-232. Epub 2019 Sep 18.

Hospital Santa Casa de Campo Grande, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil.

 A novel technique is described for transpalatal hypophysectomy as an option for sellar region surgery using a microscope and/or endoscope.  A straight submucosal tunnel (approximately 20 mm in diameter; 40-50 mm long-half the length required by conventional transsphenoidal hypophysectomy) is dissected in favorable alignment with the main tumor axis, providing a direct view that allows the surgeon to operate on large suprasellar tumors, even in cases of extra-axial expansion.  In a 25-year period, over 50 patients benefited from this surgery. Read More

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Endoscopic full-thickness resection using an over-the-scope device: A prospective study.

World J Gastroenterol 2021 Feb;27(8):725-736

Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China.

Background: Endoscopic submucosal dissection to treat mucosal and submucosal lesions sometimes results in low rates of microscopically margin-negative (R0) resection. Endoscopic full-thickness resection (EFTR) has a high R0 resection rate and allows for the definitive diagnosis and treatment of selected mucosal and submucosal lesions that are not suitable for conventional resection techniques.

Aim: To evaluate the efficacy and safety of EFTR using an over-the-scope clip (OTSC). Read More

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February 2021

Surgical Management of Complex Middle Cerebral Artery Aneurysms: An Institutional Review.

Asian J Neurosurg 2020 Oct-Dec;15(4):959-965. Epub 2020 Oct 19.

Department of Neurosurgery, Fujita Health University Babuntane Hospital, Nagoya, Japan.

Background: Complex middle cerebral artery (MCA) aneurysms are defined as large (≥10 mm) or giant (≥25 mm) aneurysms with M2 branches arising from the aneurysm rather than M1 segments and usually require some form of reconstruction of the bifurcation. Their management is difficult and surgery is preferred over endovascular modalities because of their peculiar angioarchitecture and association with critical branch points or perforators.

Objectives: The study was aimed at analyzing surgically managed complex MCA aneurysms and discussing characteristics not favorable for endovascular management, surgical nuances and clipping strategies, patient outcomes, and newer diagnostic modalities which help improve management. Read More

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October 2020

Endovascular embolization versus surgical clipping in a single surgeon series of basilar artery aneurysms: a complementary approach in the endovascular era.

Acta Neurochir (Wien) 2021 May 10;163(5):1527-1540. Epub 2021 Mar 10.

Department of Neurological Surgery, University of California, San Francisco, CA, USA.

Background: Currently, most basilar artery aneurysms (BAAs) are treated endovascularly. Surgery remains an appropriate therapy for a subset of all intracranial aneurysms. Whether open microsurgery would be required or utilized, and to what extent, for BAAs treated by a surgeon who performs both endovascular and open procedures has not been reported. Read More

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The dataset on the clipped cerebral aneurysm and their radiological findings in three-dimensional computed tomography, time-of-flight magnetic resonance angiography (TOF-MRA), and Pointwise Encoding Time Reduction with Radial Acquisition (PETRA)-MRA.

Data Brief 2021 Apr 13;35:106874. Epub 2021 Feb 13.

Department of Neurosurgery, Suwa Red Cross Hospital, Suwa, Nagano, Japan.

These data present the 141 intracranial arterial branches' visibilities near the 72 cerebral aneurysms in postoperative 58 patients treated with titanium or cobalt-chromium-nickel-molybdenum (CCNM) alloy clips. The visibilities were evaluated using time-of-flight magnetic resonance angiography (TOF-MRA), pointwise encoding time reduction with radial acquisition (PETRA)-MRA, which uses MRA with ultrashort echo time (UTE-MRA) and subtraction technique between saturated and non-saturated images, and three-dimensional computed tomography angiography (3DCTA). We retrospectively acquired the data from the medical records of Suwa Red Cross Hospital. Read More

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Estimation of (Co)Variance components and genetic parameters of fibre traits in Rambouillet sheep using multi-trait analysis.

Trop Anim Health Prod 2021 Mar 3;53(1):190. Epub 2021 Mar 3.

Planning and Monitoring, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar, J&K, 190006, India.

The present study aimed to estimate the genetic parameters of different fibre traits, viz., greasy fleece weight, staple length, and fibre diameter in Rambouillet sheep population using a multi-trait animal model. Data, spanning over 10 years (1998-2007) and pertaining to fibre traits at first clip, were collected for a total of 4186 Rambouillet sheep maintained at an organized farm. Read More

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[Characteristics of benign and malignant lesions of ampullary polyps and the accuracy of forceps biopsy].

Beijing Da Xue Xue Bao Yi Xue Ban 2020 Nov;53(1):204-209

Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China.

Objective: To distinguish the endoscopic and clinical features of ampullary polyps, to investigate the endoscopic cancer risk factors of ampullary polyps based on the compared differences of benign lesions and adenocarcinoma, and to assess the accuracy of forceps biopsy.

Methods: Authors retrospectively analyzed the data extracted from patients treated with endoscopic papillectomy (EP) from January 2009 to May 2019 in the Department of Gastroenterology, Peking University Third Hospital. Endoscopic pictures and pathology reports were reevaluated and analyzed. Read More

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November 2020

Deployable, Variable Stiffness, Cable Driven Robot for Minimally Invasive Surgery.

Front Robot AI 2019 10;6:141. Epub 2020 Jan 10.

Human-Centered Automation, Robotics and Monitoring in Surgery (HARMS) Lab, Department of Surgery and Cancer, The Hamlyn Center, Imperial College London, London, United Kingdom.

Minimally Invasive Surgery (MIS) imposes a trade-off between non-invasive access and surgical capability. Treatment of early gastric cancers over 20 mm in diameter can be achieved by performing Endoscopic Submucosal Dissection (ESD) with a flexible endoscope; however, this procedure is technically challenging, suffers from extended operation times and requires extensive training. To facilitate the ESD procedure, we have created a deployable cable driven robot that increases the surgical capabilities of the flexible endoscope while attempting to minimize the impact on the access that they offer. Read More

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January 2020

Trocar-assisted, flanged haptics, sutureless intrascleral fixated intraocular lens implantation combined with Descemet membrane endothelial keratoplasty.

Authors:
Remzi Karadag

Arq Bras Oftalmol 2020 Nov-Dec;83(6):547-551

Department of Ophthalmology, School of Medicine, Istanbul Medeniyet University, Goztepe, Istanbul, Turkey.

This article reports a combined technique of sutureless intrascleral fixated intraocular lens implantation and Descemet membrane endothelial keratoplasty in a patient with anterior pseudophakic bullous keratopathy. Two scleral tunnels were created, corneal incisions were made, and a foldable intraocular lens was cut and removed from the anterior chamber. After performing anterior vitrectomy, a 3-piece foldable intraocular lens was implanted into the anterior chamber. Read More

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February 2021

Usefulness of Pointwise Encoding Time Reduction with Radial Acquisition and Subtraction-Based Magnetic Resonance Angiography after Cerebral Aneurysm Clipping.

World Neurosurg X 2021 Jan 4;9:100096. Epub 2020 Dec 4.

Department of Neurosurgery, Suwa Red Cross Hospital, Suwa, Nagano, Japan.

Objective: Time-of-flight magnetic resonance angiography (MRA) is limited by clip-induced artifacts after cerebral aneurysmal clipping. Recently, ultrashort echo time was shown to reduce metal artifacts. We assessed the pointwise encoding time reduction with radial acquisition (PETRA) sequence in subtraction-based MRA as an ultrashort echo time method during follow-up for clipping surgery. Read More

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January 2021

Effect of prophylactic clip application for the prevention of postpolypectomy bleeding of large pedunculated colonic polyps: a randomized controlled trial.

Gastrointest Endosc 2021 Jan 5. Epub 2021 Jan 5.

Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.

Background And Aims: Prophylactic application of a hemoclip has been suggested as an alternative to the use of an endoloop for the prevention of postpolypectomy bleeding (PPB) when resecting large, pedunculated colorectal polyps. Therefore, this multicenter, randomized controlled trial investigated the efficacy of prophylactic hemoclip application to reduce PPB during the resection of large pedunculated polyps.

Methods: Large pedunculated polyps (≥10 mm in head diameter) were eligible for inclusion. Read More

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January 2021

Robotic transanal minimally invasive surgery: a case series.

Surg Endosc 2021 Jan 8. Epub 2021 Jan 8.

Department of Surgery, MedStar Health Baltimore, 9000 Franklin Square Drive, Suite 2312, Baltimore, MD, 21237, USA.

Introduction: This study describes the experience with robot-assisted transanal minimally invasive surgery (rTAMIS) at a single institution. TAMIS has become a popular minimally invasive technique for local excision of well-selected rectal lesions. rTAMIS has been proposed as another option as it improves the ergonomics of conventional laparoscopic techniques. Read More

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January 2021

A Method Based on 3D Shape Analysis Towards the Design of Flexible Instruments for Endoscopic Maxillary Sinus Surgery.

Ann Biomed Eng 2021 Jan 5. Epub 2021 Jan 5.

Department of Mechanical Engineering Technology, KU Leuven, Leuven, Belgium.

The emergence of steerable flexible instruments has widened the uptake of minimally invasive surgical techniques. In sinus surgery, such flexible instruments could enable the access to difficult-to-reach anatomical areas. However, design-oriented metrics, essential for the development of steerable flexible instruments for maxillary sinus surgery, are still lacking. Read More

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January 2021

Office hysteroscopic myomectomy without myoma extraction: A multicenter prospective study.

Eur J Obstet Gynecol Reprod Biol 2021 Jan 17;256:358-363. Epub 2020 Nov 17.

Department of Obstetrics and Gynecology, Del Mar University Hospital, Barcelona, Spain. Electronic address:

Objective: To evaluate the feasibility and safety of leaving the submucous myoma (SM) in the uterine cavity after office hysteroscopic enucleation.

Study Design: Prospective multicenter study including patients who had a single SM diagnosed by transvaginal ultrasounds with surgical indication. Office hysteroscopic enucleation of the SM was performed using a 5 mm continuous flow office hysteroscope with a 2. Read More

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January 2021

Laparoscopic instrument for female surgeons: an innovative model for endoscopic purse-string suture.

Minim Invasive Ther Allied Technol 2020 Dec 4:1-4. Epub 2020 Dec 4.

Department of General and Gastroenterological Surgery, Osaka Medical College, Takatsuki, Japan.

Commercially available laparoscopic instruments are not designed for female surgeons. We redesigned the endoscopic flexible head purse-string suture instrument for improved use by female surgeons. The weight, total length, and diameter of the swing head handle and clump handle were reduced (786 to 565 g, 715 to 700 mm, 70 to 50 mm, and 30 to 25 mm, respectively). Read More

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December 2020

Comparison of surgical clipping and endovascular coiling in the treatment of oculomotor nerve palsy caused by posterior communicating artery aneurysm.

Medicine (Baltimore) 2020 Nov;99(47):e22969

Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, PR China.

Oculomotor nerve palsy (ONP) caused by posterior communicating aneurysm (PcomAA) is mainly treated by surgical clipping or endovascular coiling. However, there are still some controversies about which treatment method could provide the more beneficial prognosis. This study aimed to compare ONP recovery rate between surgical clipping and endovascular coiling in patients diagnosed as PcomAA combined with ONP, and explore the potential risk factors of ONP recovery. Read More

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November 2020

Frequency and risk factors for postoperative aneurysm residual after microsurgical clipping.

Acta Neurochir (Wien) 2021 01 20;163(1):131-138. Epub 2020 Nov 20.

Department of Neurosurgery, Klinikum rechts der Isar, Technical University Munich, Ismaninger Straße 22, 81675, Munich, Germany.

Objective: Aneurysm residuals after clipping are a well-known problem, but the course of aneurysm remnants in follow-up is not well studied. No standards or follow-up guidelines exist for treatment of aneurysm remnants. The aim of this study was to evaluate the risk factors for postoperative aneurysm remnants and their changes during follow-up. Read More

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January 2021

Massive gastrointestinal bleeding caused by a Dieulafoy's lesion in a duodenal diverticulum: A case report.

World J Clin Cases 2020 Oct;8(20):5013-5018

Department of Gastroenterology and Hepatology, Chengdu Second People's Hospital, Chengdu 610017, Sichuan Province, China.

Background: Dieulafoy's lesion is a rare vascular abnormality characterized by a small abnormally dilated artery that runs a tortuous course in the submucosa. There is usually no ulcer present in Dieulafoy's lesions and the overlying mucosa is most often normal. Bleeding caused by a Dieulafoy's lesion is usually urgent, massive, life-threatening and prone to recurrence. Read More

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October 2020

Design and Implementation of an 11mm Improvised Laparoscopic System for Performing a Single-Port Laparoscopic Hysterectomy through the Smallest Incision Ever Reported.

Surg Technol Int 2020 Nov;37:149-153

Marchand Institute for Minimally Invasive Surgery, Mesa, Arizona, USA.

As a major institute in the field of minimally invasive gynecologic surgery, we constantly endeavor to develop and perform the least-invasive surgeries possible. In laparoscopy and robot-assisted laparoscopy, we should expect that complex surgeries that are currently undertaken with the use of many ports of a given diameter will eventually be accomplished with smaller incisions and fewer ports. There will always be clinical scenarios that require a more invasive approach, either because of adhesive tissues or a complex pathology. Read More

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November 2020

A Novel Bipolar Cautery Tool for Minimally-Invasive Neuroendoscopic Procedures.

Annu Int Conf IEEE Eng Med Biol Soc 2020 07;2020:6062-6065

Electrosurgery is used in the operating room on a daily basis as a means to cut tissue and maintain hemostasis. The principle of this technology lies in the transfer of electricity from an electrosurgical unit to the operating site on a patient's body and modifying the waveform of that electricity to achieve the desired surgical effect. Bipolar cautery uses two electrodes, an active and a return, both at the surgical site to perform electrosurgery. Read More

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Active Endoscope Preserving Image Orientation for Endonasal Skull Base Surgery.

Annu Int Conf IEEE Eng Med Biol Soc 2020 07;2020:5069-5072

Endonasal Skull Base Surgery has some advantages over conventional methods; however, some issues such as the need to replace the endoscope due to the fixed view, and possible invasiveness during insertion make the procedure difficult. To solve these problems, this paper proposes an active endoscope mechanism with several benefits. First, its variable direction of view can cover the wide ranges. Read More

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Augmentation of Pulmonary Arterial Growth in Single Ventricle Patients by Interim Selective Shunts.

Semin Thorac Cardiovasc Surg 2020 Sep 23. Epub 2020 Sep 23.

Department of Cardiology, The Royal Children's Hospital Melbourne, Victoria, Australia; Heart Research Group, Murdoch Childrens Research Institute, Victoria, Australia; Department of Pediatrics, University of Melbourne, Victoria, Australia. Electronic address:

Stenosis or diffuse hypoplasia of central pulmonary arteries (PA) is common in patients with single ventricle physiology, often requiring surgical patching. Such repairs are prone to failure, particularly with low pressure venous flow (bidirectional cavopulmonary connection or Fontan). We describe our experience of disconnection of central PA and selective systemic-PA shunt to the hypoplastic vessel. Read More

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September 2020

Functional mitral regurgitation: structural modifications with percutaneous valve repair with MitraClip.

Ann Transl Med 2020 Aug;8(15):958

Heart Area, Hospital Universitario Central de Asturias, Oviedo, Spain.

Background: Mitral regurgitation (MR) is one of the most prevalent valvular diseases in our society. Transcatheter mitral valve repair (TMVR) with the MitraClip system is increasingly used for treating this condition. The aim of our study is to analyse morphological mitral valve changes related to the procedure and its correlation with the degree of regurgitation at mid-term follow-up and with the combined endpoint of heart failure and all-cause mortality. Read More

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Uniportal video-assisted thoracoscopic thymectomy: the glove-port with carbon dioxide insufflation.

Gland Surg 2020 Aug;9(4):879-885

Unit of Thoracic Surgery, AOU Ospedali Riuniti, Ancona, Italy.

Background: Since 2004, uniportal video-assisted thoracic surgery (VATS) approach was progressively widespread and also applied in the treatment of thymoma, with promising results. We report the first series of patients who undergone uniportal VATS thymectomy using a homemade glove-port with carbon dioxide (CO) insufflation. The aim of this article is to analyze the safety and feasibility to perform an extended thymectomy (ET). Read More

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Recovery of posterior communicating artery aneurysm induced oculomotor nerve palsy: a comparison between surgical clipping and endovascular embolization.

BMC Neurol 2020 Sep 18;20(1):351. Epub 2020 Sep 18.

Department of Neurology, Linyi People's Hospital, Linyi, 276003, Shandong Province, China.

Background: Oculomotor nerve palsy (ONP) is a common symptom of posterior communicating artery aneurysm (PcomAA) that can lead to impaired eye movement and pupil dilation. Currently, surgical clipping and endovascular embolization are the two most popular treatment methods for PcomAA-induced ONP; however, the recovery outcome between the two methods remains to be elucidated.

Methods: In the present study, we thoroughly compared the pretreatment factors and recovery outcome of the two treatments on 70 patients with PcomAA-induced ONP. Read More

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September 2020