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Nitinol staple

Oliver N Schipper, Samuel E Ford, Patrick W Moody, Bryce Van Doren, J Kent Ellington
BACKGROUND: The purpose of this study was to determine the radiographic union rate after midfoot and hindfoot arthrodeses using a new generation of nitinol staples, and to compare outcomes between a nitinol staple construct and a nitinol staple and threaded compression screw construct. METHODS: A retrospective chart review was performed to identify patients who underwent hindfoot or midfoot arthrodesis using a new generation of nitinol compression staples with or without a partially threaded cannulated screw with minimum 3-month radiographic follow-up...
October 1, 2017: Foot & Ankle International
Alen Lai, Chris Christou, Craig Bailey, Chris J Tan, John Culvenor, Tian Wang, William R Walsh
OBJECTIVE: To compare the initial biomechanical properties of olecranon osteotomies stabilized with intramedullary pins and a Nitinol bone staple to osteotomies stabilized with pin and tension band wire fixation. STUDY DESIGN: Ex vivo mechanical evaluation on cadaveric bones. MATERIAL AND METHODS: Ten pairs of cadaveric forelimbs from skeletally mature Greyhounds with an olecranon osteotomy stabilized with either a pin and Nitinol bone staple or a pin and tension band wire...
September 12, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
QiCai Jason Hoon, Matthew H Pelletier, Chris Christou, Kenneth A Johnson, William R Walsh
BACKGROUND: The field of orthopaedics is a constantly evolving discipline. Despite the historical success of plates, pins and screws in fracture reduction and stabilisation, there is a continuing search for more efficient and improved methods of fracture fixation. The aim of this study was to evaluate shape-memory staples and to compare them to a currently used implant for internal fracture fixation. Multi-plane bending stability and interfragmentary compression were assessed across a simulated osteotomy using single and double-staple fixation and compared to a bridging plate...
December 2016: Journal of Experimental Orthopaedics
Burt Yaszay, Joshua D Doan, Kevin C Parvaresh, Christine L Farnsworth
STUDY DESIGN: Biomechanical evaluation using porcine spines. OBJECTIVE: Compare the fixation strength of two currently used fusionless adolescent idiopathic scoliosis correction techniques following cyclic loading using porcine spines. SUMMARY OF BACKGROUND DATA: The ability of fusionless implants to control or correct scoliosis in a growing patient requires such implants to maintain spinal fixation. Because they cross the disc, motion may weaken fixation over time...
April 1, 2017: Spine
David B Bumpass, Sara K Fuhrhop, Mario Schootman, June C Smith, Scott J Luhmann
STUDY DESIGN: Single-surgeon retrospective case series. OBJECTIVE: To validate and further describe clinical and radiographic outcomes of patients undergoing vertebral body stapling (VBS), with the goal of learning if VBS is a safe and effective alternative to bracing for treating moderate idiopathic scoliosis (IS) in the growing pediatric patient. SUMMARY OF BACKGROUND DATA: VBS is a growth-modulation technique to control moderate idiopathic scoliosis (IS) while avoiding fusion...
December 2015: Spine
Amiethab Aiyer, Nicholas A Russell, Matthew H Pelletier, Mark Myerson, William R Walsh
UNLABELLED: Background The optimal fixation method for the first tarsometatarsal arthrodesis remains controversial. This study aimed to develop a reproducible first tarsometatarsal testing model to evaluate the biomechanical performance of different reconstruction techniques. Methods Crossed screws or a claw plate were compared with a single or double shape memory alloy staple configuration in 20 Sawbones models. Constructs were mechanically tested in 4-point bending to 1, 2, and 3 mm of plantar displacement...
June 2016: Foot & Ankle Specialist
Pedro Berjano, Juan Francisco Blanco, Diego Rendon, Jorge Hugo Villafañe, David Pescador, Carlos Manuel Atienza
PURPOSE: To assess, with finite element analysis and an in vitro biomechanical study in cadaver, whether the implementation of an anterior interbody cage made of hedrocel with nitinol shape memory staples in compression increases the stiffness of the stand-alone interbody cage and to compare these constructs' stiffness to other constructs common in clinical practice. METHODS: A biomechanical study with a finite element analysis and cadaveric testing assessed the stiffness of different fixation modes for the L4-L5 functional spinal unit: intact spine, destabilized spine with discectomy, posterior pedicle-screw fixation, anterior stand-alone interbody cage, anterior interbody cage with bilateral pedicle screws and anterior interbody cage with two shape memory staples in compression...
November 2015: European Spine Journal
A D'Hoore, M R Albert, S M Cohen, F Herbst, I Matter, K Van Der Speeten, J Dominguez, H Rutten, J P Muldoon, O Bardakcioglu, A J Senagore, R Ruppert, S Mills, M J Stamos, L Påhlman, E Choman, S D Wexner
AIM: Preclinical studies have suggested that nitinol-based compression anastomosis might be a viable solution to anastomotic leak following low anterior resection. A prospective multicentre open label study was therefore designed to evaluate the performance of the ColonRing(™) in (low) colorectal anastomosis. METHOD: The primary outcome measure was anastomotic leakage. Patients were recruited at 13 different colorectal surgical units in Europe, the United States and Israel...
June 2015: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
Viral Jain, Marios Lykissas, Per Trobisch, Eric J Wall, Peter O Newton, Peter F Sturm, Patrick J Cahill, Donita I Bylski-Austrow
Spine growth modulation for scoliosis correction is a technique for slowing growth on the convex side of the curve and enhancing growth on the concave side by using the Heuter-Volkmann principle; this results in gradual deformity correction. The theoretic advantages include speedier recovery because of the minimally invasive approach used, as well as motion preservation. Several devices have been used in humans, including vertebral body stapling, with either a flexible titanium clip or a nitinol staple, and anterior spinal tethering...
2014: Instructional Course Lectures
Joseph H Carreau, Christine L Farnsworth, Diana A Glaser, Joshua D Doan, Tracey Bastrom, Nathan Bryan, Peter O Newton
PURPOSE: Anterior spinal stapling for the treatment of adolescent idiopathic scoliosis has been shown to slow progression in small curves; however, its role in larger curves remains unclear. The purpose of this study was to evaluate the effectiveness of nitinol staples to modulate spinal growth by evaluating the two-dimensional and three-dimensional morphological and histological effects of this method in a well-established porcine model. METHODS: Three immature Yucatan miniature pigs underwent intervertebral stapling...
July 2012: Journal of Children's Orthopaedics
Wei Wei, Archana Ramaswamy, Roger de la Torre, Brent W Miedema
BACKGROUND: We hypothesized that an esophageal nitinol stent that is mainly silicone-covered but partially uncovered may allow tissue ingrowth and decrease the migration rate seen with fully covered stents and still allow safe stent removal. The aim of this study was to evaluate the first human results of using partially covered stents for anastomotic complications of bariatric surgery. METHODS: This was a retrospective evaluation of all patients with staple-line complications after bariatric surgery who received a partly covered stent at a single tertiary-care bariatric center...
January 2013: Surgical Endoscopy
Jeffrey L Olson, Raul Velez-Montoya, Michael Erlanger
PURPOSE: To evaluate the tolerance and biocompatibility of a preformed nitinol intraocular clip in an animal model after anterior segment surgery. METHODS: Yucatan mini-pigs were used. A 30-gauge prototype injector was used to attach a shape memory nitinol clip to the iris of five pigs. Another five eyes received conventional polypropylene suture with a modified Seipser slip knot. The authors compared the surgical time of each technique. All eyes underwent standard full-field electroretinogram at baseline and 8 weeks after surgery...
January 25, 2012: Investigative Ophthalmology & Visual Science
A A Vishnevskiĭ, A N Korostelev, V G Kondrat'ev, K E Nazarian, A A Pechetov, T M Ruzmatov, A B Shliakhovoĭ
Sternal fixation with nickelide titanium staples with shape memory effect is considered to be a novel method of wound closure after cardiac operations. The study includes data of 140 patients and is devoted to the preliminary assessment of the use of the mentioned fixators with self-regulating compression. Osteosynthesis proved to be completely effective in 136 (97,1%) patients. The use of nitinol staples allows not only a secure sternal fixation with minimal risk of underlying structures' trauma, but decreases time of postoperative patients' rehabilitation after the major cardiac surgery...
2011: Khirurgiia
D Singh, S Sinha, H Singh, A Jagetia, S Gupta, P Gangoo, M Tandon
BACKGROUND: Anterior cervical discoidectomy with or without fusion is a well established surgical remedy for cervical prolapsed intervertebral disc (PIVD) disease. If fusion is done by an iliac bone graft then internal fixation is commonly used to keep the graft in position. This study was conducted to determine the efficacy and tolerability of shape memory alloys, especially NiTi (nickel titanium) clips in the stabilization of grafts following anterior cervical discoidectomy. METHODS: 133 NiTi clips were applied in 119 patients between January 2002 and December 2008...
August 2011: Minimally Invasive Neurosurgery: MIN
William F Lavelle, Amer F Samdani, Patrick J Cahill, Randal R Betz
SUMMARY OF BACKGROUND DATA: Although bracing for idiopathic scoliosis is moderately successful, its efficacy has been called into question and it carries associated psychosocial ramifications. In this study we report the background, rationale, indications, surgical techniques, and early results of vertebral body stapling (VBS) in patients with idiopathic scoliosis. METHODS: We reviewed the literature on growth modulation of the growing spine and the concepts behind the use of VBS as a fusionless strategy...
January 2011: Journal of Pediatric Orthopedics
Konstantinos P Donas, Giovanni Torsello
PURPOSE: To report the midterm results of a new vascular endostapling system in the endovascular treatment of abdominal aortic aneurysms (EVAR). METHODS: A prospective single-center study was performed to evaluate the feasibility and safety of the Anson Refix Endostapler, which implants a nitinol clip to provide transmural stent-graft fixation to the adventitia. Eight patients (6 men; mean age 71 years, range 59-82) underwent EVAR with endostaple fixation between November 2007 and March 2008...
June 2010: Journal of Endovascular Therapy
Daniela Tarniţă, D N Tarniţă, L Hacman, C Copiluş, C Berceanu
Shape memory alloys (SMAs) and in particular Ni-Ti alloys are commonly used in bioengineering applications as they join important qualities as resistance to corrosion, biocompatibility, fatigue resistance, MR compatibility, kink resistance with two unique thermo-mechanical behaviors: the shape memory effect and the pseudoelastic effect. They allow Ni-Ti devices to undergo large mechanically induced deformations and then to recover the original shape by thermal loading or simply by mechanical unloading. Diaphyseal fractures of the radius and ulna present specific problems not encountered in the treatment of fractures of the shafts of other long bones...
2010: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Andrea Tringali, Feisal B Daniel, Pietro Familiari, Vincenzo Perri, Massimiliano Mutignani, Carlo E Vitelli, Guido Costamagna
No abstract text is available yet for this article.
September 2010: Gastrointestinal Endoscopy
Daniela Tarniţă, D N Tarniţă, D Popa, D Grecu, Roxana Tarniţă, D Niculescu, F Cismaru
The shape memory alloys exhibit a number of remarkable properties, which open new possibilities in engineering and more specifically in biomedical engineering. The most important alloy used in biomedical applications is NiTi. This alloy combines the characteristics of the shape memory effect and superelasticity with excellent corrosion resistance, wear characteristics, mechanical properties and a good biocompatibility. These properties make it an ideal biological engineering material, especially in orthopedic surgery and orthodontics...
2010: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Reiner Winkel, Michael Schlageter
OBJECTIVE: Reconstruction of the scaphoid with use of NITINOL shape "memory" staples. INDICATIONS: Unstable fractures and nonunion of the middle third of the scaphoid, which need open reduction and internal fixation from palmar. The staples can only be used, if the arms of the staples can be inserted parallel to and at a distance of 3 mm to the fracture line. CONTRAINDICATIONS: Allergy to nickel. Cases in which the arms of the staple cannot be inserted parallel to and at best 3 mm apart from the fracture line...
November 2009: Operative Orthopädie und Traumatologie
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