The use of shape memory compression anastomosis clips in cholecystojejunostomy in pigs – a preliminary study

This paper reports on the use of compression anastomosis clips (CAC) in cholecystoenterostomy in an animal model. Cholecystojejunostomy was performed in 6 pigs using implants made of nickel-titanium alloy in the form of elliptical springs with two-way shape memory. The applied procedure led to the achievement of tight anastomosis with a minimal number of complications and positive results of histopathological evaluations of the anastomotic site. The results of the study indicate that shape memory NiTi clips are a promising surgical tool for cholecystoenterostomy in cats and dogs.

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Shape memory alloy based NiTi reinforced functionally graded material for vibration damping

Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications ◽

10.1177/14644207211035521 ◽

2021 ◽

pp. 146442072110355

Author(s):

Namrata Gangil ◽

Arshad Noor Siddiquee ◽

Sameera Mufazzal ◽

SM Muzakkir ◽

Sachin Maheshwari

Keyword(s):

Titanium Alloy ◽

Shape Memory ◽

Functionally Graded Material ◽

Friction Stir Processing ◽

Vibration Damping ◽

Functionally Graded ◽

Nickel Titanium ◽

Friction Stir ◽

Alloy Particles ◽

Graded Material

Shape memory based high performance nickel-titanium alloy particles were embedded by friction stir processing in graded concentration on the surface of light weight commercially pure magnesium cast plates. The novel functionally graded material so developed was analyzed for microhardness evolution and vibration damping effect. The nickel-titanium alloy particles were filled in a 2.5 wide × 3 mm deep slot and embedded on the surface by friction stir processing. A shallower slot 2.5 wide × 1.5 mm deep was milled over the previously embedded surface in which nickel-titanium alloy powder was again filled and embedded on the surface by second pass friction stir processing. This sequence of pass created the graded variation in nickel-titanium alloy concentration. The so fabricated functionally graded material was cut out from the plate and it was hot-forged to 2/3 thickness and subsequently quenched. The microstructural examination confirmed homogeneous dispersion of nickel-titanium alloy particles and clear interface between high and low concentration regions. The microhardness confirmed a uniform graded variation in hardness. The vibration damping tests confirm considerable improvement in the damping capacity of the fabricated functionally graded material.

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Shape memory compression anastomosis clips in gastrointestinal surgery in dogs

Veterinární Medicína ◽

10.17221/1/2016-vetmed ◽

2016 ◽

Vol 61 (No. 9) ◽

pp. 524-527

Author(s):

P. Holak ◽

Z. Lekston

Keyword(s):

Shape Memory ◽

Surgical Procedures ◽

Bowel Resection ◽

Gastrointestinal Surgery ◽

Nickel Titanium ◽

Clinical Experiences ◽

Bowel Anastomosis ◽

Simple Method ◽

Compression Anastomosis ◽

Intestinal Continuity

This paper describes clinical experiences with the use of shape memory nickel-titanium (NiTi) clips in gastrointestinal surgery in dogs. Side-to-side small bowel anastomosis was performed in eight dogs where intestinal continuity had to be restored after bowel resection. Billroth’s operation I was performed in one case. Compression anastomosis clips with two-way shape memory were used in all surgical procedures. Intestinal and gastrointestinal anastomoses involving shape memory clips were effective in all patients. Anastomotic leaks were not observed, and all clips were expelled 5–7 days after surgery. The outcomes of surgical procedures performed on canine patients with the use of shape memory NiTi clips indicate that sutureless compression anastomosis is a safe, effective and simple method of restoring gastrointestinal continuity, which can be widely applied in veterinary practice.

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Enhanced Piping System Reliability with Heat Recoverable Couplings

Marine Technology and SNAME News ◽

10.5957/mt1.1987.24.3.226 ◽

1987 ◽

Vol 24 (03) ◽

pp. 226-236

Author(s):

William Honeywell

Keyword(s):

Titanium Alloy ◽

Shape Memory ◽

Test Performance ◽

System Reliability ◽

Nickel Titanium ◽

Piping System ◽

Performance Requirements ◽

Overall Reliability

Heat recoverable couplings (HRC's) have been used to join pipe on U.S. Navy ships since 1978. They are designed to meet demanding performance requirements and have been extensively tested. HRC's are manufactured from a nickel-titanium alloy called Tinel® and their design centers around a property of this material called "shape memory." The design of the couplings, their use history, and the function of shape memory are reviewed. The test performance of HRC's is then discussed and compared with conventional pipe joining techniques. They are shown to provide a higher overall reliability than either braze joints or socket welds.

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NiTi Shape Memory Compression Anastomosis Clip in Small- and Large-Bowel Anastomoses

Surgical Innovation ◽

10.1177/1553350612474494 ◽

2013 ◽

Vol 20 (6) ◽

pp. 580-585 ◽

Cited By ~ 3

Author(s):

Katarzyna Kusnierz ◽

Henryk Morawiec ◽

Zbigniew Lekston ◽

Dmytro Zhavoronkov ◽

Magdalena Lucyga ◽

...

Keyword(s):

Shape Memory ◽

Large Bowel ◽

Memory Compression ◽

Compression Anastomosis

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A new thermo-expandable shape-memory nickel-titanium alloy stent for the management of ureteric strictures

BJU International ◽

10.1046/j.1464-410x.1999.00054.x ◽

2001 ◽

Vol 83 (7) ◽

pp. 755-759 ◽

Cited By ~ 78

Author(s):

Kulkarni ◽

Bellamy

Keyword(s):

Titanium Alloy ◽

Shape Memory ◽

Nickel Titanium

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Characterization Techniques of a Shape Memory Nickel Titanium Alloy

Proceedings ◽

10.3390/proceedings2019038015 ◽

2020 ◽

Vol 38 (1) ◽

pp. 15

Author(s):

Andrade ◽

Soares ◽

Nobrega ◽

Hilário ◽

Santos

Keyword(s):

Differential Scanning Calorimetry ◽

Titanium Alloy ◽

Phase Transformation ◽

Shape Memory Alloys ◽

Shape Memory ◽

Tensile Tests ◽

Metallic Alloys ◽

Nickel Titanium ◽

Metallographic Analysis ◽

Scanning Calorimetry

This paper presents a characterization processes study of metallic alloys, more specifically the shape memory alloys (SMA) composed by Nickel and Titanium (NiTinol). Two different wire suppliers were studied, starting with metallographic analysis until observe the contours of the grain wires. Differential scanning calorimetry (DSC) test was also performed to obtain phase transformation temperatures of the NiTinol alloys. Finally, after several tensile tests, some results were obtained for stresses, strains, elasticity modules and maximum rupture deformation.

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Microstructure of cryogenically treated martensitic shape memory nickel-titanium alloy

Journal of Conservative Dentistry ◽

10.4103/0972-0707.159727 ◽

2015 ◽

Vol 18 (4) ◽

pp. 292 ◽

Cited By ~ 3

Author(s):

ThillaSekar Vinothkumar ◽

Arunachalam Rajadurai ◽

Deivanayagam Kandaswamy ◽

Gopalakrishnan Prabhakaran

Keyword(s):

Titanium Alloy ◽

Shape Memory ◽

Nickel Titanium

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Effects of strain aging on two-way shape memory effect in a nickel–titanium alloy for medical application

Materials Science and Engineering A ◽

10.1016/j.msea.2006.02.138 ◽

2006 ◽

Vol 438-440 ◽

pp. 1093-1096 ◽

Cited By ~ 7

Author(s):

E.P. Ryklina ◽

I.Yu. Khmelevskaya ◽

S.D. Prokoshkin ◽

K.E. Inaekyan ◽

R.V. Ipatkin

Keyword(s):

Titanium Alloy ◽

Shape Memory ◽

Shape Memory Effect ◽

Memory Effect ◽

Strain Aging ◽

Medical Application ◽

Nickel Titanium

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Safety and Efficacy of the NiTi Shape Memory Compression Anastomosis Ring (CAR/ColonRing) for End-to-End Compression Anastomosis in Anterior Resection or Low Anterior Resection

Surgical Innovation ◽

10.1177/1553350612449073 ◽

2012 ◽

Vol 20 (2) ◽

pp. 164-170 ◽

Cited By ~ 5

Author(s):

Jeonghyun Kang ◽

Min Geun Park ◽

Hyuk Hur ◽

Byung Soh Min ◽

Kang Young Lee ◽

...

Keyword(s):

Shape Memory ◽

Anterior Resection ◽

Low Anterior Resection ◽

Safety And Efficacy ◽

Memory Compression ◽

Compression Anastomosis ◽

End To End

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Effectiveness of gastroduodenostomy created with the use of shape memory compression anastomosis clips: observations in a porcine model

Veterinární Medicína ◽

10.17221/22/2017-vetmed ◽

2018 ◽

Vol 63 (No. 1) ◽

pp. 12-17

Author(s):

P. Holak ◽

M. Jalynski ◽

I. Babinska

Keyword(s):

Postoperative Complications ◽

Shape Memory ◽

Surgical Outcomes ◽

Surgical Procedure ◽

Porcine Model ◽

Low Cost ◽

Memory Compression ◽

Compression Anastomosis

This article evaluates the effectiveness of gastroduodenostomies created with the use of shape memory compression anastomosis clips (CAC) and compares the surgical outcomes with those of hand-sewn anastomoses. We performed Billroth’s operation I in eight pigs: shape memory compression clips were used in six animals and hand-sewn anastomoses were created in two animals. Postoperative complications such as leakage or obstructed passage of digesta were not observed in any of the patients. Pathomorphological examinations and histopathological analyses confirmed that all anastomoses were tight and that gastroduodenal continuity was fully restored. In comparison with hand-sewn anastomoses, compression clips shortened the time of the surgical procedure and proved to be a safe, effective and low-cost technique for performing Billroth’s operation I in animals. The experience and knowledge acquired during the experiment will be used to maximise the effectiveness of gastroduodenostomy in canine and feline patients.

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