Low-friction high-torque guide wire: a new way for superselective catheterization

1991 ◽  
pp. 636-637
Author(s):  
K. Goto
Keyword(s):  
Guide Wire ◽  
Low Friction ◽  
Superselective Catheterization ◽  
High Torque

scholarly journals A New Technique for Superselective Catheterization of Arteries: Preshaping of a Micro-Guide Wire into a Shepherd's Hook Form

2007 ◽  
Vol 8 (3) ◽  
pp. 225 ◽  
Author(s):  
Jee Hyun Baek ◽  
Jin Wook Chung ◽  
Hwan Jun Jae ◽  
Whal Lee ◽  
Jae Hyung Park
Keyword(s):  
Guide Wire ◽  
New Technique ◽  
Superselective Catheterization ◽  
A New Technique

CVD AND PVD LOW-FRICTION / ANTI-WEAR COATINGS

1986 ◽  
Vol 47 (C1) ◽  
pp. C1-111-C1-118
Author(s):  
H. BOVING ◽  
H. E. HINTERMANN
Keyword(s):  
Low Friction ◽  
Wear Coatings

Study and design of dual stator permanent magnet machine with spoke-type configurations using phase-group concentrated-coil windings

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1381-1389
Author(s):  
Dezhi Chen ◽  
Chengwu Diao ◽  
Zhiyu Feng ◽  
Shichong Zhang ◽  
Wenliang Zhao
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Low Cost ◽  
Dynamic Performance ◽  
Torque Ripple ◽  
Permanent Magnet Machine ◽  
Torque Density ◽  
Phase Group ◽  
High Torque ◽  
Simulation Results

In this paper, a novel dual-stator permanent magnet machine (DsPmSynM) with low cost and high torque density is designed. The winding part of the DsPmSynM adopts phase-group concentrated-coil windings, and the permanent magnets are arranged by spoke-type. Firstly, the winding structure reduces the amount of copper at the end of the winding. Secondly, the electromagnetic torque ripple of DsPmSynM is suppressed by reducing the cogging torque. Furthermore, the dynamic performance of DsPmSynM is studied. Finally, the experimental results are compared with the simulation results.

Outcome of Upper Ureteric Stone Management by Semirigid Ureterorenoscope and Intracorporeal Pneumatic Lithotripsy

2020 ◽  
Vol 16 (2) ◽  
pp. 47-50
Author(s):  
Md Ruhul Quddus ◽  
Md Asaduzzaman ◽  
Md shariful Islam ◽  
Kaiser Ahmed ◽  
MA Awal ◽  
...  
Keyword(s):  
Kidney Diseases ◽  
Guide Wire ◽  
Ureteral Injury ◽  
Ureteric Stone ◽  
Stone Clearance ◽  
Stone Fragment ◽  
Ureteric Calculi ◽  
Ureteric Orifice ◽  
Distal Obstruction ◽  
Ureteric Stricture

Objective: To evaluate the outcome of upper ureteric stone management using semirigid URS + ICPL. Materials and Methods: Patients undergoing URS + ICPL in patient department were included in the study. Total 38 patient were included in the study from March 2009 to June 2010 in National Institute of Kidney diseases & Urology, Dhaka. Stone size was 8 mm to 1.5 cm, patients were with good renal function, well excreation on both side, without any distal obstruction, infection or multiple ureteric calculi. The procedure was done under SAB.Cystoscopy was done for identification of ureteric orifice and guide wire was passed within ureteric orifice under visual monitoring.46 cm 10 Fr Storz Uretroscope was advanced next to the guide wire.At time a tortuous portion of the ureter was encountered a second guide wire was helpful. As soon as the stone was seen the pneymatic probe was pushed toward the stone.After fixing to the stone, pneumatic source was on and stone fragmentation was started. Care was taken to avoid injury of the ureter and keeping eye one stone fragment migration within the ureter was achieved. Placement of D-J stent was done at the conclusion of the procedure in most of the cases Result: The patients were followed upto 3 months post-operatively. Within immediate complications fever occured in 10 (26.3%) patients, severe haematurea occured in 8 (21.3%) patients, ureteral injury in 8 (21.3%) & ureteric perforation in 2 (4.8%) patients underwent URS+ ICPL. Stone clearance rate after 01 month of intervention was 30 (78.9%). Almost half of the patients developed UTI after 01 month of intervention. Pyelonephritis occured in 2 ( 4.8%) patient in this group. After 03 months of intervention 84.2% patients exibited complete clearance of stone. Only 02 (4.8%) patients developed ureteric stricture. Conclusion: For management of selective sized upper ureteric stone ureterorenoscopy with semirigid one using pneumatic source of energy is a good option for it’s high stone clearance & resonably low complications. Bangladesh Journal of Urology, Vol. 16, No. 2, July 2013 p.47-50

Treatment of Malignant Esophageal Fistulas: Fluoroscopic Placement of Esophageal SEMS, Endoscopically-assisted through Surgical Gastrostomy. A Case Report

2016 ◽  
Vol 25 (2) ◽  
pp. 249-252 ◽  
Author(s):  
Gabriel Constantinescu ◽  
Vasile Şandru ◽  
Mădălina Ilie ◽  
Cristian Nedelcu ◽  
Radu Tincu ◽  
...  
Keyword(s):  
Esophageal Carcinoma ◽  
Guide Wire ◽  
Subsequent Development ◽  
Covered Stent ◽  
Metallic Stents ◽  
Fistula Formation ◽  
Life Threatening ◽  
Endoscopic Placement ◽  
Surgical Gastrostomy ◽  
Methods Of Treatment

Progressive esophageal carcinoma can infiltrate the surrounding tissues with subsequent development of a fistula, most commonly between the esophagus and the respiratory tract. The endoscopic placement of covered self-expanding metallic stents (SEMS) is the treatment of choice for malignant esophageal fistulas and should be performed immediately, as a fistula formation represents a potential life-threatening complication. We report the case of a 64-year-old male diagnosed with esophageal carcinoma, who had a 20Fr surgical gastrostomy tube inserted before chemo- and radiotherapy and was referred to our department for complete dysphagia, cough after swallowing and fever. The attempt to insert a SEMS using the classic endoscopic procedure failed. Then, a fully covered stent was inserted, as the 0.035” guide wire was passed through stenosis retrogradely by using an Olympus Exera II GIF-N180 (4.9 mm in diameter endoscope) via surgical gastrostomy, with a good outcome for the patient. The retrograde approach via gastrostomy under endoscopic/fluoroscopic guidance with the placement of a fully covered SEMS proved to be the technique of choice, in a patient with malignant esophageal fistula in whom other methods of treatment were not feasible. Abbreviations: ERCP: endoscopic retrograde cholangio-pancreatography; GI: gastrointestinal; SEMS: self-expandable metallic stents.

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