Photochemical machining of a novel cardiovascular stent

Saraf, Atul R.; Sadaiah, Mudigonda

doi:10.1080/10426914.2016.1198025

Cited by 16 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, laser cutting is the most used technique to fabricate the core structure of stents. This approach has been the first choice for the last three decades, fulfilling the design criteria [ 71 ]. The main advantage of this manufacturing methodology is related to the production of fragile hollow tubes with small thicknesses and great outline accuracy [ 72 ].…”

Section: Manufacturing Technologiesmentioning

confidence: 99%

3D Printing of Polymeric Bioresorbable Stents: A Strategy to Improve Both Cellular Compatibility and Mechanical Properties

2022

View full text Add to dashboard Cite

One of the leading causes of death is cardiovascular disease, and the most common cardiovascular disease is coronary artery disease. Percutaneous coronary intervention and vascular stents have emerged as a solution to treat coronary artery disease. Nowadays, several types of vascular stents share the same purpose: to reduce the percentage of restenosis, thrombosis, and neointimal hyperplasia and supply mechanical support to the blood vessels. Despite the numerous efforts to create an ideal stent, there is no coronary stent that simultaneously presents the appropriate cellular compatibility and mechanical properties to avoid stent collapse and failure. One of the emerging approaches to solve these problems is improving the mechanical performance of polymeric bioresorbable stents produced through additive manufacturing. Although there have been numerous studies in this field, normalized control parameters for 3D-printed polymeric vascular stents fabrication are absent. The present paper aims to present an overview of the current types of stents and the main polymeric materials used to fabricate the bioresorbable vascular stents. Furthermore, a detailed description of the printing parameters’ influence on the mechanical performance and degradation profile of polymeric bioresorbable stents is presented.

show abstract

Section: Manufacturing Technologiesmentioning

confidence: 99%

3D Printing of Polymeric Bioresorbable Stents: A Strategy to Improve Both Cellular Compatibility and Mechanical Properties

2022

View full text Add to dashboard Cite

show abstract

“…They remarked that the uniformity of the etching depends on the positioning of the workpiece in the etchant tank. Saraf and Sadaiah, [16] designed a photochemical machining process for the fabrication of a novel cardiovascular stent on Steel 316. They applied ultrasonic vibrations to the etchant and increased the MRR by 2.7 times.…”

Section: Introductionmentioning

confidence: 99%

Modeling and multi-objective optimization of low-frequency vibration-assisted chemical machining using central composite design in response surface methodology

2023

View full text Add to dashboard Cite

Increasing the etching rate is one of the main optimization targets in the chemical machining (CM). Traditionally, this target is fulfilled by some costly techniques like selecting stronger etchants and increasing the etchant concentration. Also, other methods like increasing the etchant temperature and stirring the etchants by agitators are employed for increasing the etching rate.One of the advantages of these methods is reduction of the consumption of acidic etchants which results in the cost reduction and making an eco-friendley process.In this article, a systematic experimental study is performed on vibration-assisted CM of copper. In this technique, the workpiece vibrates in the etchant during the CM. For evaluating the performance of machining, effects of amplitude and frequency of vibrations, along with the temperature and concentration of acidic etchant, on material removal rate, surface roughness and machining undercut are studied experimentally. The experiments are designed by Central Composite Design (CCD) in Response Surface Methodology (RSM). Also, multi-objective optimization is performed by defining a desirability function. The optimal vibroassisted process parameters are temperature 60 ̊C, etchant concentration 600 g/l, vibration frequency 25 Hz, and vibration amplitude 1.5 mm, to get optimal outputs on the desired parameters.

show abstract

“…Therefore, Monel 400 is chosen for this study. Generally, micromachining, laser machining, dry machining and wet chemical machining have been used for fabrication of microchannel [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Chemical Machining of Monel

Patil

Dugad²,

Farakate³

et al. 2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

Self Cite

View full text Add to dashboard Cite

Abstract:This study shows the effect of etching condition on microchannel of 100 µm width. Microchannels were fabricated on Monel 400 substrate by using different concentration of Ferric chloride (FeCl 3 ) and nitric acid (HNO 3 ) in water. Effect of exposure time on channel width and peel off resistance of photoresist is also studied. It is found that etching temperature has significant effect on undercut and depth of etch.

show abstract

Photochemical machining of a novel cardiovascular stent

Cited by 16 publications

References 41 publications

3D Printing of Polymeric Bioresorbable Stents: A Strategy to Improve Both Cellular Compatibility and Mechanical Properties

3D Printing of Polymeric Bioresorbable Stents: A Strategy to Improve Both Cellular Compatibility and Mechanical Properties

Modeling and multi-objective optimization of low-frequency vibration-assisted chemical machining using central composite design in response surface methodology

Chemical Machining of Monel

Contact Info

Product

Resources

About