'Pencil tip' metallic screw dilator: A new cost effective and safe device for single step percutaneous renal access

Dalela, D.
October 2008
Indian Journal of Urology;Supplement1, Vol. 24, pS46
Academic Journal
Introduction: A variety of dilatation systems are available for percutaneous renal access. We innovated a metallic .Pencil Tip. screw dilator for one step dilatation. Aim: A study was done to campare its effectiveness, safety and cost with Teflon dilators and metallic telescopic dilators. Materials and Methods: The device comprises two components . First being a screw dilator which is made up of steel (tip portion . solid, shaft . hollow) and the second, a club ended 6F guide rod. The tip of dilator is pencil tip shaped, having fine spiral ridges grooved at a distance of 1.5 mm. The rear end of dilator has a non slippery grip. After the guide wire and the rod are in place, the screw dilator is advanced by using a gentle screwing action and inward push under fluoro-guidance. A prospective, randomized comparative study was undertaken by a single surgeon to assess the feasibility and safety of new screw dilator. The study included 31 patients undergoing PCNL and patients were divided into 3 groups depending upon the whether metallic screw dilator, fascial dilatation or metallic telescopic dilator was used Primary outcomes compared were average tract formation time, time to achieve clear vision, postoperative haemoglobin drop, transfusion rate, vascular complications and cost. Results: There were 11, 10, and 10 patients in group 1, 2, and 3 respectively. The patients in all the groups were age and disease matched. The Average tract formation time and time to achieve clear vision was shorter and the cost was lower for patients in group 1. No significant difference was seen in the other variables analyzed. Conclusion: The new dilatation system developed by us saves operative time, is highly economical and easy to use. It does not increase the complication rate over that reported for other dilatation systems and maintains its efficacy during repeated sterilization and operative use.


Related Articles

  • The Value of Suction Drainage Fluid Culture during Clean Orthopedic Surgery. Berthelot, P.; Girard, R.; Mallaval, F.; Vautrin, A.C.; Lucht, F.; Fabry, J. // Clinical Infectious Diseases;6/1/2002, Vol. 34 Issue 11, p1538 

    Reports on a study regarding the value of performing suction drainage fluid culture during aseptic orthopedic surgery. Results of the microbiological analysis of drainage fluid specimens from patients who underwent clean orthopedic surgery in France; Patients included in the study; List of...

  • The Value of Suction Drainage Fluid Culture during Aseptic and Septic Orthopedic Surgery: A Prospective Study of 901 Patients. Bernard, L.; Pron, B.; Vuagnat, A.; Gleizes, V.; Signoret, F.; Denormandie, P.; Si-Ali, A.; Perrone, C.; Feron, J. M.; Gaillard, J. L. // Clinical Infectious Diseases;1/1/2002, Vol. 34 Issue 1, p46 

    There are no guidelines on the value of suction drainage fluid culture (SDC), and it is difficult to determine whether the organisms cultured from suction drainage fluid samples are pathogenic or simply contaminants. We performed 2989 cultures of suction drainage fluid samples obtained, during...

  • High-Level Disinfection with 2% Alkalinized Glutaraldehyde Solution for Reuse of Laparoscopic Disposable Plastic Trocars. Gundogdu, Haldun; Ocal, Koray; Caglikulekci, Mehmet; Karabiber, Nihal; Bayramoglu, Elmir; Karahan, Mehmet // Journal of Laparoendoscopic & Advanced Surgical Techniques;Feb98, Vol. 8 Issue 1, p47 

    Presents a study which examined the reusability of disposable plastic trocars after high-level disinfection by alkanized 2% glutaraldehyde solution. Background on sterilization or disinfection; Materials and methods used; Results and discussion.

  • povidone-iodine.  // Taber's Cyclopedic Medical Dictionary;2005, p1748 

    The article presents a definition for the term "povidone-iodine," which refers to a complex of iodine with povidone. It is used in dilute concentration as a surgical scrub, in aerosol spray, in vaginal douche solutions, and in ointments and gels.

  • scrubbing.  // Taber's Cyclopedic Medical Dictionary;2005, p1962 

    A definition of the term "scrubbing" is presented. It refers to washing the hands, fingernails, and forearms, including the elbows, prior to donning appropriate gowns and gloves to participate in surgery or other sterile procedures. It refers to preparing the skin of the patient for surgery with...

  • aseptic technique.  // Taber's Cyclopedic Medical Dictionary;2005, p181 

    A definition of the medical term "aseptic technique" is presented. It refers to a method used in surgery to prevent contamination of the wound and operative site. All instruments used are sterilized and physicians and nurses wear caps, masks, shoe coverings, sterile gowns and gloves. The...

  • chlorhexidine gluconate.  // Taber's Cyclopedic Medical Dictionary;2005, p399 

    A definition of the term "chlorhexidine gluconate" is presented, which means a topical disinfectant, with trade name Hibiclens.

  • Zero tolerance to shunt infections: can it be achieved? Choksey M S; Malik I A // Journal of Neurology, Neurosurgery & Psychiatry;Jan2004, Vol. 75 Issue 1, p87 

    OBJECTIVE: To evaluate the rigid application of a technique of shunt placement aimed at the eradication of postoperative shunt infection in neurosurgical practice. METHOD: All shunt procedures were performed or closely supervised by the senior author (MSC). The essentials were the use of...

  • SOCIOLOGY. H. W. // America;7/26/1913, Vol. 9 Issue 16, p383 

    The article reflects on the capability of science and medicine to prolong life indefinitely. It mentions some of the life-saving discoveries, including aseptic surgery and the cleaning up of slums and the means taken to preserve infant life. The growing malignancy of organic diseases and the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics