Relevant bibliographies by topics / Needlets

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Needlets'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Needlets"

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Geller, Daryl, and Domenico Marinucci. "Mixed needlets." Journal of Mathematical Analysis and Applications 375, no. 2 (March 2011): 610–30. http://dx.doi.org/10.1016/j.jmaa.2010.09.046.

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Lan, Xiaohong, and Domenico Marinucci. "The needlets bispectrum." Electronic Journal of Statistics 2 (2008): 332–67. http://dx.doi.org/10.1214/08-ejs197.

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Baldi, P., G. Kerkyacharian, D. Marinucci, and D. Picard. "Asymptotics for spherical needlets." Annals of Statistics 37, no. 3 (June 2009): 1150–71. http://dx.doi.org/10.1214/08-aos601.

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Geller, Daryl, Xiaohong Lan, and Domenico Marinucci. "Spin needlets spectral estimation." Electronic Journal of Statistics 3 (2009): 1497–530. http://dx.doi.org/10.1214/09-ejs448.

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Durastanti, Claudio. "Tail behavior of Mexican needlets." Journal of Mathematical Analysis and Applications 447, no. 2 (March 2017): 716–35. http://dx.doi.org/10.1016/j.jmaa.2016.10.046.

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Mayeli, Azita. "Asymptotic uncorrelation for Mexican needlets." Journal of Mathematical Analysis and Applications 363, no. 1 (March 2010): 336–44. http://dx.doi.org/10.1016/j.jmaa.2009.07.044.

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Scodeller, S., Ø. Rudjord, F. K. Hansen, D. Marinucci, D. Geller, and A. Mayeli. "INTRODUCING MEXICAN NEEDLETS FOR CMB ANALYSIS: ISSUES FOR PRACTICAL APPLICATIONS AND COMPARISON WITH STANDARD NEEDLETS." Astrophysical Journal 733, no. 2 (May 16, 2011): 121. http://dx.doi.org/10.1088/0004-637x/733/2/121.

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Durastanti, Claudio, Yabebal T. Fantaye, Frode K. Hansen, Domenico Marinucci, and Isaac Z. Pesenson. "Radial 3D-Needlets on the Unit Ball." Proceedings of the International Astronomical Union 10, S306 (May 2014): 75–77. http://dx.doi.org/10.1017/s1743921314010801.

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AbstractWe present a simple construction of spherical wavelets for the unit ball, which we label Radial 3D Needlets. We envisage an experimental framework where data are collected on concentric spheres with the same pixelization at different radial distances from the origin. The unit ball is hence viewed as a tensor product of the unit interval with the unit sphere: a set of eigenfunctions is therefore defined on the corresponding Laplacian operator. Wavelets are then constructed by a smooth convolution of the projectors defined by these eigenfunctions. Localization properties may be rigorously shown to hold in the real and harmonic domain, and an exact reconstruction formula holds; the system allows a very convenient computational implementation.
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Cammarota, Valentina, and Domenico Marinucci. "On the limiting behaviour of needlets polyspectra." Annales de l'Institut Henri Poincaré, Probabilités et Statistiques 51, no. 3 (August 2015): 1159–89. http://dx.doi.org/10.1214/14-aihp609.

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Baldi, P., G. Kerkyacharian, D. Marinucci, and D. Picard. "Adaptive density estimation for directional data using needlets." Annals of Statistics 37, no. 6A (December 2009): 3362–95. http://dx.doi.org/10.1214/09-aos682.

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Dissertations / Theses on the topic "Needlets"

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Pham, Ngoc Thanh Mai. "Problèmes inverses et analyse en ondelettes adaptées." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2009. http://tel.archives-ouvertes.fr/tel-00439112.

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Nous abordons l'étude de deux problèmes inverses, le problème des moments de Hausdorff et celui de la déconvolution sur la sphère ainsi qu'un problème de régression en design aléatoire. Le problème des moments de Hausdorff consiste à estimer une densité de probabilité à partir d'une séquence de moments bruités. Nous établissons une borne supérieure pour notre estimateur ainsi qu'une borne inférieure pour la vitesse de convergence, démontrant ainsi que notre estimateur converge à la vitesse optimale pour les classes de régularité de type Sobolev. Quant au problème de déconvolution sur la sphère, nous proposons un nouvel algorithme qui combine la méthode SVD traditionnelle et une procédure de seuillage dans la base des Needlets sphériques. Nous donnons une borne supérieure en perte Lp et menons une étude numérique qui montre des résultats fort prometteurs. Le problème de la régression en design aléatoire est abordé sous le prisme bayésien et sur la base des ondelettes déformées. Nous considérons deux scenarios de modèles a priori faisant intervenir des gaussiennes à faible et à grande variance et fournissons des bornes supérieures pour l'estimateur de la médiane a posteriori. Nous menons aussi une étude numérique qui révèle de bonnes performances numériques.
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Monnier, Jean-Baptiste. "Quelques contributions en classification, régression et étude d'un problème inverse en finance." Phd thesis, Université Paris-Diderot - Paris VII, 2011. http://tel.archives-ouvertes.fr/tel-00650930.

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On s'intéresse aux problèmes de régression, classification et à un problème inverse en finance. Nous abordons dans un premier temps le problème de régression en design aléatoire à valeurs dans un espace euclidien et dont la loi admet une densité inconnue. Nous montrons qu'il est possible d'élaborer une stratégie d'estimation optimale par projections localisées sur une analyse multi-résolution. Cette méthode originale offre un avantage calculatoire sur les méthodes d'estimation à noyau traditionnellement utilisées dans un tel contexte. On montre par la même occasion que le classifieur plug-in construit sur cette nouvelle procédure est optimal. De plus, il hérite des avantages calculatoires mentionnés plus haut, ce qui s'avère être un atout crucial dans de nombreuses applications. On se tourne ensuite vers le problème de régression en design aléatoire uniformément distribué sur l'hyper-sphère et on montre comment le tight frame de needlets permet de généraliser les méthodes traditionnelles de régression en ondelettes à ce nouveau contexte. On s'intéresse finalement au problème d'estimation de la densité risque-neutre à partir des prix d'options cotés sur les marchés. On exhibe une décomposition en valeurs singulières explicite d'opérateurs de prix restreints et on montre qu'elle permet d'élaborer une méthode d'estimation de la densité risque-neutre qui repose sur la résolution d'un simple programme quadratique.
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Busillo, Eric. "Characterization of plastic hypodermic needles." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26584.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.
Committee Chair: Colton, Jonathan; Committee Member: Ku, David; Committee Member: Prausnitz, Mark. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Stellman, Jeffrey Taylor. "Production, development, and characterization of plastic hypodermic needles." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29748.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.
Committee Chair: Dr. Jonathan S. Colton; Committee Member: Dr. Mark R. Prausnitz; Committee Member: Dr. Rudolph L. Gleason. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Andersson, Alexandra. "Den stickrädda patienten." Thesis, Högskolan i Gävle, Avdelningen för hälso- och vårdvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-23256.

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Bakgrund: Studier visa att ca 10 % av världens befolkning lider av stickrädsla. Konsekvenser för person som känner stickrädsla är ångest och oro samt undvikande av medicinska procedurer som innefattar injektioner. Detta kan leda till hälsoproblem för individen och i värsta fall leda till att personen undviker all hälso- och sjukvård. Det är viktig att sjuksköterskan har kunskaper om vilka omvårdnadshandlingar som kan lindra lidande för patienten. Syfte: Syftet med denna litteraturstudie var att utifrån ett sjuksköterskeperspektiv belysa omvårdnadsåtgärder som kan förbygga stickrädsla hos barn. Syftet var också att beskriva urvalsgrupperna i de inkluderade artiklarna. Metod: En litteraturstudie där resultatet av 12 artiklar granskats, analyserats och sammanställts. Sökningar utfördes i databaserna PubMed, CINAHL samt PsycINFO. Huvudresultat: I resultatet framkom att miljöns utformning är viktig då barn ska få injektioner och att barn, behövde var väl förbered på vad som skulle hända innan nålinförandet. I resultatet framkom också att även mindre barn har möjlighet att tillgodogöra sig utbildning om nålrelaterade procedurer. Att anpassa tiden efter barnets behov var viktigt och att det är barnets behov som skulle få styra vården. Distraktion under själva nålinförandet visade på minskad rädsla hos barnen men att det bästa var dock om distraktion inte behövdes. Slutsatser: Vårdmiljöns utformning är viktig när barn ska få ett nålinföranden och sjuksköterska kan minska känslan av sjukhus eller vårdcentral genom att anpassa miljön och att tillhanda ha distraherande leksaker. Det är viktigt att barn vet vad som skulle hända vid ett nålinförande och även mindre barn kan tillgodogöra sig utbildning om nålrelaterade procedurer samt förstå vikten av dem. Sjuksköterskan kan genom att anpassa besökstiden efter barnets behov och bekräfta barnets känslor minska oro och rädsla hos stickrädda barn.
Background: Studies show that about 10% of the world population suffer from needle fear. Consequences for the person with this phobia who knows needle fear is anxiety and avoidance of medical procedures involving injections. This can lead to health problems for the individual and in the worst case lead to the person avoiding all healthcare. It is important that the nurse has knowledge of the factors that can lead to needle fear and what the nursing interventions that can alleviate the suffering of the patient. Aim: The purpose of this study was to highlight nurses nursing care measures required to preclude the fear of needles in children. The aim was also to describe the selection groups in the included articles. Method: A literature review in which the results of the 12 articles reviewed, analyzed and compiled. Searches were conducted in PubMed, CINAHL and PsycINFO. Main Results: The result showed that the environment's design is important as children get injections, and how well the child was prepared for needle insertion. The result showed that even small children have the opportunity to benefit from training on needle insertion procedures. Adjusting the time it takes for a baby and a toddler to adapt must be allowed to steer healthcare. Distraction was used as a method before the needle insertion but that the best were of distraction was not needed. Conclusions: The environment´s design is important as children get injections and nurse can reduce the feeling of a hospital or clinic by adapting the environment and provide for distracting toys. It is important that children know what would happen at the needle insertion procedure and even smaller children can benefit from education about needle injection procedures and understand the importance of them. The nurse can by adjusting the session time for the child's needs and validate the child's feelings reduce anxiety and fear of the needle fearing children.
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Montanari, Piero. "Needles in haystack of tweets." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5389/.

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McAllister, Devin Vincent. "Microfabricated needles for transdermal drug delivery." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/11031.

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Foulaadvand, M. Ebrahim, Azadeh Saiidi, and Mohsen Yarifard. "A 2D system of hard needles." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-198127.

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Shek, Ka To. "Hot embossing-injection molding and puncture characterization of polymer hypodermic needle /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?MECH%202007%20SHEK.

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Kianirad, Hoda. "Contact poling of RKTP with silicon needles." Thesis, KTH, Fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-120593.

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Books on the topic "Needlets"

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New York (State). AIDS Advisory Council. Report on needle exchange programs and deregulation of needles and syringes. [Albany, N.Y.?: The Council, 1996.

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Dominick, Andie. Needles. New York: Scribner, 1998.

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Needles. Toronto: ECW Press, 2002.

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Needles. New York: Simon & Schuster, 2000.

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Moser, Sally. Needles. Evergreen, Colo: Chockstone Press, 1992.

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Branch, Hawaii STD/AIDS Prevention. Report to the Twenty-First Legislature, State of Hawaii, regular session 2001: In compliance with House Resolution HR 99 relating to increasing access to sterile syringes. [Honolulu, Hawaii]: The Branch, 2001.

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Pins & needles. London: Arrow, 2004.

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Harris, Marion. Pins & needles. London: BCA, 2004.

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Boyle, Martin. Needles' Point. Southampton: B&T, 1996.

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Halle, Karina. Sins & needles. New York: Forever, 2014.

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Book chapters on the topic "Needlets"

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Marinucci, Domenico. "Needlets Estimation in Cosmology and Astrophysics." In Lecture Notes in Statistics, 83–97. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3520-4_8.

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Renzi, Cristina, and Francesco Leali. "Multicriteria Decision Making Methods in Engineering Design: An Application on Medical Devices." In Lecture Notes in Mechanical Engineering, 406–11. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70566-4_64.

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AbstractThe design of medical devices is challenging, due to strict geometry specifications and criteria belonging to several disciplines. The aim of this paper is to provide a design methodology which seems to lack in the literature of design of biomedical devices. In particular, the case study proposed in this paper concerns with the design of Bone-Biopsy (BB) needle devices. Following the design process of Pahl and Beitz, a functional analysis is carried out, to point out the interfaces between parts of existing BB needles. A morphology matrix is used to generate alternatives for the cannula holder, the core part of the product. Generated alternatives have been ranked and scored by means of the Pugh’s Controlled Convergence method according to the decision makers' opinions. In this work, the design peculiarities related to the BB needles which have been pointed out could be extended for guiding the design of other biomedical devices.
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Goudie, Andrew, and Rita Gardner. "The Needles." In Discovering Landscape in England & Wales, 128–30. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2298-6_51.

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Bearce, Stephanie. "Space Needles." In Top Secret Files, 98–100. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003239192-34.

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Gooch, Jan W. "Needled." In Encyclopedic Dictionary of Polymers, 481. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7831.

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Jain, Nutan, and Swati Varshney. "Needles and Needle Holders." In ISARCON 2017 Manual of Laparoscopic Endosuturing, 7. Jaypee Brothers Medical Publishers (P) Ltd., 2018. http://dx.doi.org/10.5005/jp/books/14174_3.

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"Scissors, Needles, Needle Holders." In The Neurosurgical Instrument Guide, edited by Christopher S. Eddleman. Stuttgart: Georg Thieme Verlag, 2012. http://dx.doi.org/10.1055/b-0034-74359.

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"Needles." In Bacteria, 29–34. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118143391.ch5.

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Pusdekar, Vinod. "Needles." In Systematic Approach to Describe Instruments and Operative Procedures in Surgery, Orthopedics and Anesthesia, 147. Jaypee Brothers Medical Publishers (P) Ltd., 2013. http://dx.doi.org/10.5005/jp/books/11935_25.

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"Needles." In Principles and Practice of Electrical Epilation, 76–84. Routledge, 2007. http://dx.doi.org/10.4324/9780080480329-14.

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Conference papers on the topic "Needlets"

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Remazeilles, Mathieu. "Reconstruction of high-resolution SZ maps from heterogeneous datasets using needlets." In Big Bang, Big Data, Big Computers. Trieste, Italy: Sissa Medialab, 2013. http://dx.doi.org/10.22323/1.165.0030.

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Konh, Bardia, and Tarun K. Podder. "Design and Fabrication of a Robust Active Needle Using SMA Wires." In 2017 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dmd2017-3470.

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Shape memory alloy (SMA) based active needles [1] have shown the potential to introduce remarkable improvements to many percutaneous needle-based procedures such as thermal ablation, brachytherapy and breast biopsy. Brachytherapy for instance is a common procedure to treat early stage prostate cancer because its superior clinical outcome. Prostate cancer is sex specific and only affects males; it is more prevalent in elderly males, ages 65–74 years old [2]. There is projected to be a 24% increase in cancer cases for men by 2020, this would mean approximately 1 million new cases each year [3]. There was a study in 2015 [4] that examined the needle placement accuracy for brachytherapy procedure while implementing the use of a 3D navigation system, Surgical Planning and Orientation Computer System. The study examined the Target Registration Error (TRE) for single and multiple needle placements. Analysis of the 250 different targets showed a mean Target Registration Error for single needle applications of (1.1 ± 0.4 mm), (0.9 ± 0.3 mm), and (0.7 ± 0.3 mm) in the x, y, and z directions, respectively. The maximum deviation was found 2.3 mm. In another study by Podder et al. [5], the effects of dose distribution has been discussed which has a high influence on the clinical outcome. The study shows that the curvilinear approach by the active needle would introduce the potential for improving dose distribution, reducing number of needles and resulting is better clinical outcome. Actuating the surgical needles for higher accuracy, SMAs are considered as suitable actuators [6] because of their lightweight, high force and energy density. However, SMA actuated needle will be more complex and may incur additional inaccuracy; thereby after development of a robust active needle, control studies sound very necessary. The focus of this work is to introduce an innovative design of an active needle, and to fabricate the device to demonstrate its capability of creating a high maneuverability at the needle tip. This design of the active needle privileges from actuation of a comparatively long SMA wire to create a considerable amount of deflection, while minimizing the tissue rupture. Most of the needles today are made of stainless steel, titanium or Nitinol; they are ensured to be sturdy enough to puncture the tissue and overcome its resistance during insertion. This would limit the flexibility of the needles. In our previous designs [7,8], a joint element was included in design to provide more dexterity to the needle’s structure. Despite of the fact that this soft element increased the needle’s flexibility; the design introduced a high tissue rupture during actuation because of the gap between the body of the needle and the SMA actuator. The amount of rupture was increasing with larger deflection of the needle. This work decreases the rupture to a reasonable amount while even a higher deflection compared to our previous design is achieved. Table 1 lists general specifications and approximations of dimensions and requirements that have been tried to be addressed in the current design as much as possible. There will be still future work to meet some other factors discussed at the end of this study.
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Patel, Kavi I., Long Zhu, Sai Teja Reddy Gidde, Fei Ren, and Parsaoran Hutapea. "Influence of Composite Polymer Coatings on the Insertion Force of Needle-Like Structure in Soft Materials." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24341.

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Abstract This study is aimed to evaluate the effects of coated surgical needles with composite polymers such as polydopamine (PDA), polytetrafluoroethylene (PTFE), and carbon. The coated needle’s lubrication properties were measured using 3 DOF force sensors and 3D robot system by the repetitive insertion in soft tissue materials. Needle durability is a measure of needle sharpness after repeated passage through high stiffness tissue materials. The composite coatings were shown to reduce the insertion force by ∼49% and retraction forces by ∼46% when tested using a bovine kidney. The surface roughness and the lateral friction force of the needle are measured using the Atomic Force Microscope (AFM). The adhesion energy of the different coating on the needle will be measured using a nano-scratch method.
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Sahlabadi, Mohammad, Kyle Jezler, and Parsaoran Hutapea. "Novel Steerable Smart Needle With a Built-In Recovery Mechanism for Multiple Actuations." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/smasis2017-3802.

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Smart Memory Alloys have brought a range of new capabilities to existing and novel designs due to their unique properties and ability to induce stress and strain in the material due to thermomechanical loading. Shape memory alloy-based smart material has widely been used and studied for biomedical applications. This includes smart needle for percutaneous procedures, self-expanding Nitinol grafts, stents, and other permanent internal devices. The smart needle is a needle in which deflection/path of the insertion in tissues can be controlled by incorporating Nitinol wire actuators on the body of the needle. However, smart needle designs proposed in the past lack both flexibility for multidirectional angles, and they do not allow for multiple martensitic phase transformations and are thus not repeatable. Each time the Nitinol wire is actuated, the wire would have to be manually reset to its initial length. Active materials like Nitinol require a bias force or mechanism that reverts the activated form of the needle back to its original martensitic form, which in the case of active needles is a straight wire. The lack of a recovery mechanism means that subsequent austenite transformations for deflection in opposing or similar trajectories cannot be performed as the system will not fully reset itself once cooled. In our proposed design, four Nitinol wires are embedded into a needle and act independently of one another to provide multi directional needle deformations. By providing tension onto a flexible 3D printed needle shaft, they can pivot a hard needle tip into any given direction. Once the needle’s deformation is complete, the material’s natural rigidity coupled with other Nitinol wires pulling resistance will restore the initial length of the actuated wire as it cools. This allows the needle to undergo a martensitic transformation and then subsequent cooling followed by additional phase transformation in a different direction. This makes the needle’s mechanism repeatable and functional for multiple insertions.
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Datla, Naresh V., Bardia Konh, and Parsaoran Hutapea. "Studies With SMA Actuated Needle for Steering Within Tissue." In ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7523.

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Flexible needles that can be steered within soft tissues are a promising approach to precisely reach target locations, thereby can significantly benefit needle based surgical procedures such as brachytherapy and biopsy. Several design approaches have been suggested to increase needle flexibility that include bevel-tip needles, kinked needles and flexure-based needles. These needles when inserted into a soft materials takes a curved path. This curved path can be controlled while inserting by rotating the needle at its base. In this work another approach to control the curved path was explored. Here the needle body was attached with a shape memory alloy (SMA) actuator close the needle tip that when actuated bends the needle and thereby leads to a curved path inside soft tissue. A prototype of the SMA actuated needle was developed and the working principle was demonstrated in air, tissue-mimicking gel, and pig liver. Moreover, the effect of actuator wire diameter on the needle behavior were studied.
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Sahlabadi, Mohammad, David Gardell, Jonasan Younan Attia, Seyedvahid Khodaei, and Parsaoran Hutapea. "Insertion Mechanics of 3D Printed Honeybee-Inspired Needle Prototypes for Percutaneous Procedure." In 2017 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dmd2017-3457.

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Surgical needles are commonly used by medical professionals to reach target locations inside of the body for disease diagnosis or other medical interventions — such as biopsy, brachytheraphy, thermal ablation, and drug delivery [1, 2]. The effectiveness of these procedures depends on the accuracy with which the needle tips reach the targets, such as tumors or certain organs/tissues. In procedures, such as deep brain stimulation and prostate brachytheraphy, it is impossible to reach the surgical sites via simple needle trajectory because of anatomical constraints. Although needles are considered minimally invasive devices, needle insertion still causes tissue damage of varying degrees so it is desirable to reach multiple targets, or multiple sites on a single target, to obtain multiple high-quality biopsy samples with each insertion [1, 2]. Recently there has been a substantial and growing interest in the medical community to develop innovative surgical needles for percutaneous interventional procedures. The answer to the challenge of developing advanced surgical needles could be found in nature. Insects such as honeybees (Fig. 1), mosquitos, and horse flies have sophisticated sting mechanics and stinger structures, which they use to steer their stingers to a specific target, such as a human, and to release their venom in a certain path in skin [3]. We are studying these mechanisms, evolved in nature over millions of years, as a basis to develop bioinspired needles. Surgical needles are typically consisted of a hollow cylindrical component (cannula) and an inner solid cylindrical component (stylet). Our hypothesis is that a surgical needle (stylet) that mimics insect stinger mechanics and structures can be easily controlled for sophisticated needle steering during surgery and can result in more effective and less invasive percutaneous procedures. The focus of this work is to mimic honeybee stinger such as shown in Fig. 1 to design innovative surgery needles. One of the critical issues in designing surgery needles is the insertion force required to penetrate and to navigate the needle inside the tissue [2]. Larger insertion forces increase tissue damages thus may result in a more painful procedure [2]. Another consideration is the needle trajectory path (needle tip deflection) and the difficulty to control the needle path. The needle deviates from the target and thus it is very difficult to navigate the needle in the tissue. There is a need to design advanced surgery needles that provide smaller insertion force. This can lead to a less invasive procedure, in other words, less tissue damage and pain [3]. The needle trajectory path of these new needle designs must be understood for the needle design optimization. As stated previously, it is hypothesized that a honeybee-inspired needle can be utilized to reduce the insertion force. In this work, the experimental work to understand the mechanics of bioinspired needles is presented. 3D printing of the needles and their insertion tests are performed to investigate the effect of the needle designs on the insertion force and the needle deflection (trajectory path) curves. Understanding these factors should shed some lights on some design parameters to develop innovative surgery needles.
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Datla, Naresh V., and Parsaoran Hutapea. "Energy Based Model to Predict the Tissue-Needle Interaction Mechanics of Active Surgical Needles." In ASME 2013 Conference on Frontiers in Medical Devices: Applications of Computer Modeling and Simulation. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fmd2013-16159.

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Needle insertion is a common surgical technique used in diagnosis (e.g. biopsy) and prognosis (e.g. brachytherapy) of several diseases. The success of such procedures highly depends on the accuracy of needle placement to target locations. Accuracy of the needle placement is presently limited due to movement of tissue, inability to control needle deflection, and inaccessibility of image monitoring techniques. These limitations are being addressed by using active (or smart) needles (e.g. see Fig. 1) that can maneuver within the tissue with the aid of actuators attached to the needle body [1–3]. However, in these studies, active needles were studied in air but not inside the tissue where they are supposed to be used. Therefore, to develop active needles that are feasible for clinical applications, it is necessary to understand the mechanics of active needles within the tissue.
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Sahlabadi, Mohammad, Seyedvahid Khodaei, Kyle Jezler, and Parsaoran Hutapea. "Study of Bioinspired Surgery Needle Advancing in Soft Tissues." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/smasis2017-3915.

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Although needle-based surgeries are considered as minimally invasive surgeries, the damage caused by the needle insertion in soft tissues, namely brain needs to be reduced. Any minor damage, swelling or bleeding in the brain tissue can lead to a long-lasting traumatic brain injury. Our approach to this challenge is to search for a proper solution in nature such as honeybees. In our previous studies, some new bioinspired needles (passive/active) mimicking honeybee stingers have been proposed and tested by conducting needle insertion tests in tissue gel phantoms. The main feature of the bioinspired needles is specially-design barbs on the needle structures. It was discovered that the insertion forces of the bioinspired needles are decreased by as much as 35%, which means that there is a decrease in tissue gel phantom damages. It was also observed that the needle path deflection in the tissue was greatly affected by the reduction in needle bending stiffness and the insertion force. The reduction in the bending stiffness would require lower forces of Nitinol actuators to navigate our smart/active needle inside the tissues. This work specifically aims to investigate the mechanics of the bioinspired needles in bovine brain tissues. The needle insertion tests in real tissues are designed and performed. The insertion mechanics of the bioinspired needles in bovine brain is studied and presented.
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Barnett, Andrew C., Malorie Feidner, and Jason Z. Moore. "Vibration Needle Tissue Cutting With Varying Tip Geometry." In ASME 2015 International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/msec2015-9353.

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Needles are one of most commonly used medical devices. They are used to deliver drugs, biopsy tissue, draw blood, conduct brachytherapy cancer treatment and many other procedures. Maintaining a low insertion force of the needle is important to the success of these procedures. Different geometries as well as utilizing vibratory cutting has been shown to reduce the insertion force, thus improving the outcome of the procedure; however, the effects of vibration and geometry of the needle together has yet to be explored. This paper describes the experimental setup utilized to test the effect of geometry on utilizing axial vibration in reducing the insertion force of needles into bovine liver across a range of frequencies and amplitudes. Three conical tipped needles with different grind angles were explored. Experiments showed the addition of the vibration was able to reduce the insertion force by up to 67%. Experiments showed that the insertion force for the bluntest needle was directly dependent on the amplitude of vibration, where the insertion force of the sharpest needle was more dependent on the maximum vibratory insertion speed of the needle.
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Khodaei, Seyedvahid, Mohammad Sahlabadi, and Parsaoran Hutapea. "Design of Smart Barb of Honeybee-Inspired Surgery Needle." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/smasis2017-3851.

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Needles are among the most common used instruments in surgery by medical professionals either for diagnosing the disease such as biopsy or for medical intervention such as drug delivery. Generally, needles are assumed to be minimally invasive, however it is desirable to decrease the insertion and pulling out force in order to prevent tissue damages. The hypothesis is that reducing the resistance forces caused by needle-tissue interaction leads to less tissue damage and less pain. Bioinspired needles mimicking insect stingers have been designed to reduce this resistance force and this design could provide to a more sophisticated steering of needle. Although our earlier study on honeybee-mimicking needle has shown the reduction of insertion force by having barbs on the needle body, the pull-out force is a big concern in particular during the extraction of the needle. A special mechanism to control the barbs at the end of the insertion procedure is designed. In this study, we investigated the use of SMA to control the barb functions so that it will reduce the pull-out force of the bioinspired needles. In this work, smart barb design is proposed. Circular barbs are divided to two symmetric parts connected by a ring around the central axis of the needle and the rings are connected to form the base part of its structure. Barbs are designed to have parallel faces with a desired angle through the insertion mechanism and are connected with a SMA wire at their bottom that is connected to the rear and front part of the needle. After insertion, actuating the SMA wires force the barbs to rotate around the rings due to the torque provided by wire shrinkage. As a result, barbs have now the same angle along the movement of needle for pulling out as they have for insertion mechanism.
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Reports on the topic "Needlets"

1

Callicoatt, J. D. Needless Incentives For Unmanned Aerial System Controllers. Fort Belvoir, VA: Defense Technical Information Center, February 2009. http://dx.doi.org/10.21236/ada517767.

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Daubechies, Ingrid, A. R. Calderbank, and Amit Singer. Building Mathematical Tools to Find Needles in Haystacks. Fort Belvoir, VA: Defense Technical Information Center, March 2013. http://dx.doi.org/10.21236/ada582398.

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3

Vogt, James T. Asian needle ant. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station, 2021. http://dx.doi.org/10.2737/srs-su-143.

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Agrawal, Ajay, John McHale, and Alex Oettl. Finding Needles in Haystacks: Artificial Intelligence and Recombinant Growth. Cambridge, MA: National Bureau of Economic Research, April 2018. http://dx.doi.org/10.3386/w24541.

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Toohey, Shannon. Needle Aspiration for Pneumothorax. Touch Surgery Simulations, December 2015. http://dx.doi.org/10.18556/touchsurgery/2015.s0058.

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Li, Guifang. Needle in the Haystack Secure Communication. Fort Belvoir, VA: Defense Technical Information Center, October 2008. http://dx.doi.org/10.21236/ada486942.

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Brattain, Laura, Caspar Floryan, and Oliver Hauser. Field Operable Ultrasound Needle Guidance System. Fort Belvoir, VA: Defense Technical Information Center, June 2011. http://dx.doi.org/10.21236/ada568831.

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Li, Yong, Fang Yang, Ya-Yong Huang, and Yu-Fei Fu. Computed tomography-guided lung biopsy: a meta-analysis of core needle and fine needle aspiration biopsy. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, January 2021. http://dx.doi.org/10.37766/inplasy2021.1.0036.

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Li, Yong, Fang Yang, Ya-Yong Huang, and Yu-Fei Fu. Computed tomography-guided lung biopsy: a meta-analysis of core needle and fine needle aspiration biopsy. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, January 2021. http://dx.doi.org/10.37766/inplasy2021.1.0039.

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Purkayastha, Sanjay. Lost Needle During a Bariatric Laparoscopic Procedure. Touch Surgery Publications, December 2018. http://dx.doi.org/10.18556/touchsurgery/2016.s0152.

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