The Experts below are selected from a list of 15987 Experts worldwide ranked by ideXlab platform
Richard F Edlich - One of the best experts on this subject based on the ideXlab platform.
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caprosyn another major advance in synthetic monofilament absorbable suture
Journal of Long-term Effects of Medical Implants, 2004Co-Authors: Angela Pinerosfernandez, Richard F Edlich, David B Drake, Pamela Rodeheaver, Deborah L Moody, George T. RodeheaverAbstract:CAPROSYN* suture is the latest innovation in monofilament synthetic suture. This suture is prepared from POLYGLYTONE*6211, a synthetic polyester composed of glycolide, caprolactone, trimethylene carbonate, and lactide. The purpose of this study was to compare the Biomechanical Performance of CAPROSYN* suture to that of CHROMIC GUT suture. The Biomechanical Performance studies included quantitative measurements of wound security, strength loss, mass loss, potentiation of infection, tissue drag, knot security, knot rundown, as well as suture stiffness. Both CAPROSYN* and CHROMIC GUT sutures provided comparable resistance to wound disruption. Prior to implantation, suture loops of CAPROSYN* had a significantly greater mean breaking strength than suture loops of CHROMIC GUT. Three weeks after implantation of these absorbable suture loops, the sutures had no appreciable strength. The rate of loss of suture mass of these two sutures was similar. As expected, CHROMIC GUT sutures potentiated significantly more infection than did the CAPROSYN* sutures. The handling properties of the CAPROSYN* sutures were far superior to those of the CHROMIC GUT sutures. The smooth surface of the CAPROSYN* sutures encountered lower drag forces than did the CHROMIC GUT sutures. Furthermore, it was much easier to reposition the CAPROSYN* knotted sutures than the knotted CHROMIC GUT sutures. In the case of CHROMIC GUT sutures, it was not possible to reposition a two-throw granny knot. These Biomechanical Performance studies demonstrated the superior Performance of synthetic CAPROSYN* sutures compared to CHROMIC GUT sutures and provide compelling evidence of why CAPROSYN* sutures are an excellent alternative to CHROMIC GUT sutures.
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Biomechanical Performance of new cardiovascular needles.
Journal of Long-Term Effects of Medical Implants, 2001Co-Authors: John G. Thacker, George T. Rodeheaver, Robert E. H. Ferguson, Richard F EdlichAbstract:Abstract Cardiovascular needles are now being manufactured from new stainless steel alloys containing high concentrations of nickel, Surgalloy and Ethalloy. The purpose of this study was to compare the Biomechanical Performance of a cardiovascular needle made of Surgalloy with a comparably sized needle made of Ethalloy. The parameters of Biomechanical Performance included sharpness, maintenance of sharpness, resistance to bending, and ductility. Because the Biomechanical Performance of these needles was remarkably similar, cardiovascular needles made of either the Surgalloy or Ethalloy alloys are recommended for cardiovascular surgery.
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The scientific basis for selecting surgical sutures.
Journal of Long-Term Effects of Medical Implants, 2001Co-Authors: Kant Y. Lin, Vikram R. Reddy, Richard F Edlich, Heidi-marie A. Farinholt, George T. RodeheaverAbstract:The purpose of this study was to examine the handling properties of synthetic absorbable and monofilament polypropylene sutures made by two different manufacturers and to compare a subjective evaluation by surgeons to the results of standardized Biomechanical Performance tests. The surgeons' clinical subjective evaluation of the monofilament polypropylene sutures correlated with the results of the Biomechanical Performance studies, whereas the Biomechanical evaluation of the two synthetic absorbable sutures detected notable differences in their Performance. These distinct differences in Biomechanical Performance of the absorbable sutures did not alter their Performance in the subjective clinical evaluation.
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Biomechanical Performance of silicone and latex external condom catheters.
Journal of Long-Term Effects of Medical Implants, 2000Co-Authors: Robin Williams, George T. Rodeheaver, Richard F Edlich, Trimble Bailey, Sheryl A. Pine, William D. SteersAbstract:Standard in vivo Biomechanical Performance tests and a pilot clinical study of latex external condom catheters (ECCs) and silicone ECCs demonstrated the superior Performance of the silicone ECC over that of the latex ECC. The silicone ECC has a self-adhesive that binds more securely to human skin than the self-adhesive of latex ECC. In addition, the moisture vapor transmission through silicone is significantly greater than through latex. The aggressive self-adhesive of the silicone ECC significantly reduced ECC catheter pop-off compared to that of latex ECC. Silicone ECC removal can be facilitated by the application of a warm, wet cloth to the exterior surface of the silicone ECC, which significantly reduces its self-adhesive force. Constant, gentle traction is then applied to the silicone catheter outlet end to achieve atraumatic silicone ECC removal. On the basis of the results of these standardized tests and pilot study, the silicone ECC is recommended for incontinent men without obstructive uropathy.
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Biomechanical Performance of orthopedic gloves
Journal of Biomedical Materials Research, 1999Co-Authors: Elise M. Jackson, John G. Thacker, Jeffrey G. Neal, Freddie M. Williams, Collette A. Stern, F. Suber, Richard F EdlichAbstract:The purpose of this study was to compare the Biomechanical Performance of commercially available orthopedic gloves to that of a single surgical glove, as well as a double glove system. The orthopedic gloves were found to be thicker than the single surgical glove. This increased thickness of the orthopedic glove was associated with a greater resistance to glove puncture. The thickest orthopedic gloves also had reduced tactile sensitivity when compared to the single surgical glove. In addition, the glove donning forces and glove hydration rates varied considerably. These latter Biomechanical Performance parameters were not significantly related to glove thickness. The double glove systems tested in this study had similar Performance characteristics in regard to many of the orthopedic gloves. The glove donning forces for the double glove systems were the lowest of the gloves tested. In addition, the double glove systems displayed the greatest resistance to glove hydration of the gloves tested. Their Performance in the glove hydration tests and the force required to don the double glove systems were much more desirable than any of the orthopedic gloves. The results of this study indicate that the double glove systems may provide a desirable alternative to the use of the single orthopedic gloves.
John G. Thacker - One of the best experts on this subject based on the ideXlab platform.
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Biomechanical Performance of new cardiovascular needles.
Journal of Long-Term Effects of Medical Implants, 2001Co-Authors: John G. Thacker, George T. Rodeheaver, Robert E. H. Ferguson, Richard F EdlichAbstract:Abstract Cardiovascular needles are now being manufactured from new stainless steel alloys containing high concentrations of nickel, Surgalloy and Ethalloy. The purpose of this study was to compare the Biomechanical Performance of a cardiovascular needle made of Surgalloy with a comparably sized needle made of Ethalloy. The parameters of Biomechanical Performance included sharpness, maintenance of sharpness, resistance to bending, and ductility. Because the Biomechanical Performance of these needles was remarkably similar, cardiovascular needles made of either the Surgalloy or Ethalloy alloys are recommended for cardiovascular surgery.
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Biomechanical Performance of orthopedic gloves
Journal of Biomedical Materials Research, 1999Co-Authors: Elise M. Jackson, John G. Thacker, Jeffrey G. Neal, Freddie M. Williams, Collette A. Stern, F. Suber, Richard F EdlichAbstract:The purpose of this study was to compare the Biomechanical Performance of commercially available orthopedic gloves to that of a single surgical glove, as well as a double glove system. The orthopedic gloves were found to be thicker than the single surgical glove. This increased thickness of the orthopedic glove was associated with a greater resistance to glove puncture. The thickest orthopedic gloves also had reduced tactile sensitivity when compared to the single surgical glove. In addition, the glove donning forces and glove hydration rates varied considerably. These latter Biomechanical Performance parameters were not significantly related to glove thickness. The double glove systems tested in this study had similar Performance characteristics in regard to many of the orthopedic gloves. The glove donning forces for the double glove systems were the lowest of the gloves tested. In addition, the double glove systems displayed the greatest resistance to glove hydration of the gloves tested. Their Performance in the glove hydration tests and the force required to don the double glove systems were much more desirable than any of the orthopedic gloves. The results of this study indicate that the double glove systems may provide a desirable alternative to the use of the single orthopedic gloves.
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Biomechanical Performance of examination gloves.
Journal of Biomedical Materials Research, 1999Co-Authors: Elise M. Jackson, John G. Thacker, Jeffrey G. Neal, Freddie M. Williams, F. Suber, Richard F EdlichAbstract:The purpose of this study was to compare the Biomechanical Performance of new powder-free commercially available synthetic examination gloves to that of commercially available powder-free latex examination gloves. The synthetic gloves were significantly thinner than the latex gloves. Despite the decreased thickness, all three nitrile gloves, as well as the polyvinyl chloride glove, exhibited a greater resistance to glove puncture. The glove donning forces varied considerably among all gloves, and wet donning forces were greater than dry donning forces. Under dry conditions, the donning forces for the synthetic gloves were less than or equal to the forces for the latex gloves. Because of their increased puncture resistance and similar donning forces, synthetic gloves are a safe alternative to latex examination gloves.
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Biomechanical Performance of powder-free examination gloves.
The Journal of Emergency Medicine, 1999Co-Authors: Mark D. Fisher, John G. Thacker, Freddie M. Williams, Vikram R. Reddy, Kant Y. Lin, Richard F EdlichAbstract:Abstract Biomechanical Performance studies were undertaken for powder-free, latex and nitrile examination gloves. Using standardized tests, examination glove Performance was judged by measuring glove thickness, glove puncture force, glove tape adhesion force, glove donning force, glove stiffness, and immediate unrecovered stretch. Even though the nitrile examination gloves were thinner than the latex examination gloves, they exhibited a greater puncture resistance. In addition, tape adherence to the N-Dex™ nitrile glove was the lowest. Moreover, measurements of the handling characteristics of the nitrile examination gloves demonstrated that they are an acceptable alternative to latex examination gloves. While these Biomechanical studies demonstrate the superiority of the nitrile examination gloves, clinical glove evaluation is still needed to determine their Performance in the health care setting.
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Biomechanical Performance of latex and non latex double glove systems
Journal of Biomedical Materials Research, 1999Co-Authors: Mark D. Fisher, Freddie M. Williams, John G. Thacker, Vikram R. Reddy, Richard F EdlichAbstract:The purpose of this study was to evaluate ten commercially available latex, powder-free surgical gloves and four commercially available non-latex, powder-free surgical gloves using standardized, reproducible Biomechanical parameters that included glove thickness, puncture resistance, and glove donning force. For all gloves tested, with one exception (Neolon™ PF), puncture resistance increased for double-gloves as compared to single-gloves. In addition, single-glove thickness was not a reliable determinant of puncture resistance for either latex or non-latex gloves. For the latex gloves, the Ultrafree double and single-gloves exhibited the highest puncture resistance. The glove donning forces for the Biogel™ M and Biogel Sensor™ single-gloves were the lowest. In contrast, the Biogel Reveal™ and Encore™ Ultra-Thick exhibited the lowest double-glove donning forces. On the basis of these Performance tests of latex gloves, the surgeon should consider the Biogel Reveal as well as the Ultrafree gloves for their latex double-glove system. For the non-latex gloves, the Pure Advantage Nitrile™ glove had the highest puncture resistance for one layer and two layers of glove material. The thin Pure Advantage Nitrile glove was the most resistant to glove puncture. The Pure Advantage Nitrile glove had low glove donning forces for both single-glove donning configurations and double-glove donning configurations. Consequently, we recommend the Pure Advantage Nitrile glove as the powder-free, non-latex, double-glove system. © 1999 John Wiley & Sons, Inc. J Biomed Mater Res (Appl Biomater) 48: 797–806, 1999
Serge P. Von Duvillard - One of the best experts on this subject based on the ideXlab platform.
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specific physiological and Biomechanical Performance in elite sub elite and in non elite male team handball players
Journal of Sports Medicine and Physical Fitness, 2018Co-Authors: Herbert Wagner, Philip X. Fuchs, Serge P. Von DuvillardAbstract:BACKGROUND Team handball is a dynamic sport game that is played professionally in numerous countries. However, knowledge about training and competition is based mostly on practical experience due to limited scientific studies. Consequently, the aims of our study were to compare specific physiological and Biomechanical Performance in elite, sub-elite and in non-elite male team handball players. METHODS Thirty-six elite, sub-elite and non-elite male team handball players performed a game based Performance test, upper-body and lower-body strength tests, 30-m sprint test, counter movement jump test and an incremental treadmill running test. RESULTS Significant differences (P<0.05) were found for the peak oxygen uptake, heart rate, offense and defense time, jump height and ball velocity during the jump throw in the game based Performance test, maximal oxygen uptake in the incremental treadmill running test as well as in maximal leg strength and leg explosive strength in the isometric strength test. CONCLUSIONS Elite male players have an enhanced specific agility, a better throwing Performance, a higher team handball specific oxygen uptake and higher leg strength compared to sub-elite and non-elite players. Based on these results we recommend that training in team handball should focus on game based training methods to improve Performance in specific agility, endurance and technique.
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Specific physiological and Biomechanical Performance in elite, sub-elite and in non-elite male team handball players.
The Journal of sports medicine and physical fitness, 2017Co-Authors: Herbert Wagner, Philip X. Fuchs, Serge P. Von DuvillardAbstract:BACKGROUND Team handball is a dynamic sport game that is played professionally in numerous countries. However, knowledge about training and competition is based mostly on practical experience due to limited scientific studies. Consequently, the aims of our study were to compare specific physiological and Biomechanical Performance in elite, sub-elite and in non-elite male team handball players. METHODS Thirty-six elite, sub-elite and non-elite male team handball players performed a game based Performance test, upper-body and lower-body strength tests, 30-m sprint test, counter movement jump test and an incremental treadmill running test. RESULTS Significant differences (P
George T. Rodeheaver - One of the best experts on this subject based on the ideXlab platform.
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caprosyn another major advance in synthetic monofilament absorbable suture
Journal of Long-term Effects of Medical Implants, 2004Co-Authors: Angela Pinerosfernandez, Richard F Edlich, David B Drake, Pamela Rodeheaver, Deborah L Moody, George T. RodeheaverAbstract:CAPROSYN* suture is the latest innovation in monofilament synthetic suture. This suture is prepared from POLYGLYTONE*6211, a synthetic polyester composed of glycolide, caprolactone, trimethylene carbonate, and lactide. The purpose of this study was to compare the Biomechanical Performance of CAPROSYN* suture to that of CHROMIC GUT suture. The Biomechanical Performance studies included quantitative measurements of wound security, strength loss, mass loss, potentiation of infection, tissue drag, knot security, knot rundown, as well as suture stiffness. Both CAPROSYN* and CHROMIC GUT sutures provided comparable resistance to wound disruption. Prior to implantation, suture loops of CAPROSYN* had a significantly greater mean breaking strength than suture loops of CHROMIC GUT. Three weeks after implantation of these absorbable suture loops, the sutures had no appreciable strength. The rate of loss of suture mass of these two sutures was similar. As expected, CHROMIC GUT sutures potentiated significantly more infection than did the CAPROSYN* sutures. The handling properties of the CAPROSYN* sutures were far superior to those of the CHROMIC GUT sutures. The smooth surface of the CAPROSYN* sutures encountered lower drag forces than did the CHROMIC GUT sutures. Furthermore, it was much easier to reposition the CAPROSYN* knotted sutures than the knotted CHROMIC GUT sutures. In the case of CHROMIC GUT sutures, it was not possible to reposition a two-throw granny knot. These Biomechanical Performance studies demonstrated the superior Performance of synthetic CAPROSYN* sutures compared to CHROMIC GUT sutures and provide compelling evidence of why CAPROSYN* sutures are an excellent alternative to CHROMIC GUT sutures.
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Biomechanical Performance of new cardiovascular needles.
Journal of Long-Term Effects of Medical Implants, 2001Co-Authors: John G. Thacker, George T. Rodeheaver, Robert E. H. Ferguson, Richard F EdlichAbstract:Abstract Cardiovascular needles are now being manufactured from new stainless steel alloys containing high concentrations of nickel, Surgalloy and Ethalloy. The purpose of this study was to compare the Biomechanical Performance of a cardiovascular needle made of Surgalloy with a comparably sized needle made of Ethalloy. The parameters of Biomechanical Performance included sharpness, maintenance of sharpness, resistance to bending, and ductility. Because the Biomechanical Performance of these needles was remarkably similar, cardiovascular needles made of either the Surgalloy or Ethalloy alloys are recommended for cardiovascular surgery.
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The scientific basis for selecting surgical sutures.
Journal of Long-Term Effects of Medical Implants, 2001Co-Authors: Kant Y. Lin, Vikram R. Reddy, Richard F Edlich, Heidi-marie A. Farinholt, George T. RodeheaverAbstract:The purpose of this study was to examine the handling properties of synthetic absorbable and monofilament polypropylene sutures made by two different manufacturers and to compare a subjective evaluation by surgeons to the results of standardized Biomechanical Performance tests. The surgeons' clinical subjective evaluation of the monofilament polypropylene sutures correlated with the results of the Biomechanical Performance studies, whereas the Biomechanical evaluation of the two synthetic absorbable sutures detected notable differences in their Performance. These distinct differences in Biomechanical Performance of the absorbable sutures did not alter their Performance in the subjective clinical evaluation.
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Biomechanical Performance of silicone and latex external condom catheters.
Journal of Long-Term Effects of Medical Implants, 2000Co-Authors: Robin Williams, George T. Rodeheaver, Richard F Edlich, Trimble Bailey, Sheryl A. Pine, William D. SteersAbstract:Standard in vivo Biomechanical Performance tests and a pilot clinical study of latex external condom catheters (ECCs) and silicone ECCs demonstrated the superior Performance of the silicone ECC over that of the latex ECC. The silicone ECC has a self-adhesive that binds more securely to human skin than the self-adhesive of latex ECC. In addition, the moisture vapor transmission through silicone is significantly greater than through latex. The aggressive self-adhesive of the silicone ECC significantly reduced ECC catheter pop-off compared to that of latex ECC. Silicone ECC removal can be facilitated by the application of a warm, wet cloth to the exterior surface of the silicone ECC, which significantly reduces its self-adhesive force. Constant, gentle traction is then applied to the silicone catheter outlet end to achieve atraumatic silicone ECC removal. On the basis of the results of these standardized tests and pilot study, the silicone ECC is recommended for incontinent men without obstructive uropathy.
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Biomechanical Performance of ophthalmic surgical needles.
Ophthalmology, 1992Co-Authors: W. Lyle Mcclung, John G. Thacker, Richard F Edlich, Robert C. Allen, George T. RodeheaverAbstract:The mechanical Performance of ophthalmic surgical needles is studied. Standard Biomechanical tests, devised to evaluate the Performance of ophthalmic surgical needles, are presented. Four comparable groups of ophthalmic surgical needles were selected from two different manufacturers for these Biomechanical studies. The results of this testing demonstrate that needle point geometry and needle composition are important determinants of needle Performance. When comparable size needles were evaluated, the Biomechanical Performance of the recently introduced CS160-6 ophthalmic needle (Ethicon, Inc) was superior to the AU-5, CU-5, and SU-5 needles (Alcon, Inc). Whereas the development of these Biomechanical tests has allowed the evaluation of these ophthalmic needles, these same tests can be used to assess the Performance of other new ophthalmic surgical needles.
William R. Walsh - One of the best experts on this subject based on the ideXlab platform.
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optimizing Biomechanical Performance of the 4 strand cruciate flexor tendon repair
Journal of Hand Surgery (European Volume), 2004Co-Authors: E Dona, Mark P Gianoutsos, William R. WalshAbstract:Abstract Purpose The purpose of this study was to determine whether increasing the size of the locking loop increased the repair strength of the cruciate 4-strand suture technique and to quantify the Biomechanical properties that various peripheral suture techniques provide in the cruciate 4-strand suture technique. Methods Fifty-six deep flexor tendons harvested from adult sheep hind limbs were divided randomly into 7 groups of 8. Four groups were repaired using the cruciate core technique without a peripheral suture. The locking loops were set using 10%, 25%, 33%, or 50% of the tendon width and loaded to failure using a distraction rate of 20 mm/min. The 3 groups of tendons then were repaired by using the established optimal locking loop size. These 3 groups were combined with a simple running, cross-stitch, or the interlocking horizontal mattress (IHM) peripheral suture. Repairs were tested to failure and the load at a 2-mm gap, load at failure, and stiffness were determined for all samples. Results Repairs with locking loops of 25% had the greatest Biomechanical properties with load to 2-mm gap formation, load to failure, and stiffness of 10 N, 46.3 N, and 3.9 N/mm, respectively. Those with 33%, 50%, and 10% locking loops followed. Repairs with 10% locking loops failed owing to the suture cut out of the tendon. All other groups failed because of suture breakage. By using the cruciate core technique with a 25% locking loop the IHM/cruciate combination was markedly better than both the cross-stitch/cruciate and simple running/cruciate combinations. Conclusions The ideal-sized bite of the locking loops for the cruciate repair is 25% of the tendon's width. Peripheral sutures are vital to the Biomechanical properties of the repair. The IHM peripheral suture technique provided the greatest improvement in Biomechanical properties.
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Biomechanical Performance of Bankart Repairs in a Human Cadaveric Shoulder Model
The American Journal of Sports Medicine, 1998Co-Authors: Khalid D. Mohammed, David H. Sonnabend, Jerome Goldberg, Simon Hutabarat, Peter Walker, William R. WalshAbstract:The objective of this study was to develop a method to evaluate the Biomechanical Performance of Bankart repairs in a human cadaveric shoulder in a clinically relevant orientation. Twenty fresh-frozen human cadaveric shoulder girdles were used to compare the Biomechanical Performance of intact anteroinferior capsulolabral complexes with the Biomechanical Performance of three Bankart lesion reconstruction techniques. Repairs were performed on surgically created Bankart lesions. Evaluations were performed with the shoulders in glenohumeral abduction and external rotation. The repair techniques employed interosseous sutures, Mitek GII suture anchors, or Acufex T-Fix devices. The suture material used in all repairs was No. 2 Ti-Cron. The Biomechanical Performance of the three reconstruction techniques did not differ, but each was significantly inferior compared with that of the intact shoulder samples. The interosseous repairs failed by suture pullout through soft tissue. Repairs in the Mitek GII group failed by pullout of the suture anchors, suture breakage, or pullout of the suture through soft tissue. Repairs in the T-Fix group failed by pullout of the suture through soft tissue or failure of the polymer portion of the T-Fix suture.