壓縮刺激機電特性測試分析評估系統(tǒng),軟骨壓縮電位特性測試分析儀
mach-1壓縮刺激機電特性測試分析評估系統(tǒng),arthro-bst軟骨壓縮電位特性測試分析儀
一、mach-1壓縮刺激機電特性測試分析評估系統(tǒng)
該biomomentum材料/組織機電耦合效應特性測試儀(機械力偶聯(lián)電位測試分析),可帶電活性組織或材料進行機械力偶聯(lián)電位測試分析,比如關(guān)節(jié)軟骨、帶電水凝膠等活組織壓縮期間同步進行電位測試,可集成3D輪廓表面形貌表征、拉伸、壓縮、三彎曲、四點彎曲、扭力、剪切、摩擦磨損、電特性等各種力電多物理場測試。 能對極軟、極硬組織材料進行精密可靠的機械刺激和表征。允許表征的機械性能包括剛度、強度、模量、粘彈性、塑性、硬度、附著力、腫脹和松弛位移控制運動各種機械特性
特點
1、適用樣品范圍廣:
1.1、從骨等硬組織材料到腦組織、眼角膜等軟組織材料
1.2、從粗椎間盤的樣品到j(luò)細纖維絲
2、通高量壓痕測試分析
2.1、三維法向壓痕映射非平面樣品整個表面的力學特性
2.2、48孔板中壓痕測試分析
3、力學類型測試分析功能齊
模塊化集成壓縮、張力、剪切、摩擦、扭轉(zhuǎn)、穿刺、摩擦和2D/3D壓痕、3D表面輪廓、3D厚度等各種力學類型支持。
4、高分辨率:
4.1、位移分辨率達0.1um
4.2、力分辨率 達0.025mN
5、 行程范圍廣:50-250mm
6、體積小巧、可放入培養(yǎng)箱內(nèi)
7 、高變分辨率成像跟蹤分析
8、多軸向、多力偶聯(lián)刺激
9、活性組織電位分布測試分析
10、產(chǎn)品成熟,文獻量達 上千篇
纖維絲張力和扭力測 | 自動法向壓痕和厚度映射 | 脛骨三維輪廓測試 | 機電活性材料(如結(jié)締組織、帶電水凝膠等)壓縮過程中電位分布 |
可對材料將對機械刺激提供電響應測定分析,例如壓電晶體。 也可對生物材料(水凝膠)和組織(關(guān)節(jié)軟骨)表現(xiàn)出機電行為機型測定分析。 然而,在他們的情況下,這是由于流體流經(jīng)固定帶電分子網(wǎng)絡(luò)(非壓電)所致。 在機械刺激期間測量電活性材料的電響應可以提供有關(guān)其性質(zhì)的詳細信息。,還可以在電刺激后誘發(fā)機械反應。
通過在安裝在Mach-1上的機電測試腔室中加入一組電極來評估軟骨的機電性能,于各種測試方案,包括應力松弛、正弦位移和不同配置下的蠕變(受限和非受限壓縮、張力、壓痕和彎曲)可測定軟骨和半月板兩種結(jié)締組織的機電特性。由于組織剛度和壓縮產(chǎn)生的電場(或流電位)對組織的生化成分敏感,測試儀與一組電極耦合,可以j確測量這些電信號。研究正常和退化結(jié)締組織的生化成分和機電特性等。
活性材料(如結(jié)締組織、帶電水凝膠等)壓縮過程中同步測量機電的電位分布
1、(機電測試腔室)ELECTROMECHANICAL TESTING CHAMBER

軟骨、帶電凝膠等壓縮期間同時進行機電特性測,該室有5個不同的Ag-AgCl電極通道和一個較大的參比電極。藥室可裝滿PBS溶液
方便清潔和消毒的設(shè)計,部堅固可保持其多年的完整性,用于與生理鹽水接觸,易于組裝,并安裝在透明材料制成的測試儀上
機電測試腔室的規(guī)格:
材料:Ag-AgCl(電極)
直徑:1 mm(電極)
間距:4 mm(中心到中心)(電極)
應用案例:
結(jié)締組織機電特性的表征.1部分:關(guān)節(jié)軟骨
在本研究中,使用Mach-1型力學測試儀測定了軟骨和半月板兩種結(jié)締組織的機電特性。由于組織剛度和壓縮產(chǎn)生的電場(或流電位)對組織的生化成分敏感,測試儀與一組電極耦合,可以j確測量這些電信號。本研究的目的是建立正常和退化結(jié)締組織的生化成分和機電特性(剛度和流電位)之間的聯(lián)系。部分主要研究關(guān)節(jié)軟骨。
由于關(guān)節(jié)軟骨細胞外基質(zhì)主要由帶負電荷的蛋白多糖組成,包埋在膠原網(wǎng)絡(luò)中,因此在液體中存在過量的移動正電荷。軟骨的壓縮通過分離與固定的帶負電的蛋白多糖相關(guān)的帶正電的移動離子產(chǎn)生流電位。
配對的牛軟骨/骨盤(直徑3 mm)在有或wu降解劑(白細胞介素-1或白細胞介素-1)的情況下培養(yǎng)11天。
通過在安裝在Mach-1上的測試室中加入一組電極來評估軟骨的機電性能。Mach-1設(shè)計用于各種測試方案,包括應力松弛、正弦位移和不同配置下的蠕變(受限和非受限壓縮、張力、壓痕和彎曲)。在這項研究中,用8個直徑為50μm、間距為300μm的鉑電極組成的線性陣列,在wu側(cè)限壓縮幾何結(jié)構(gòu)中測量組織表面的流動電位。電極1至6覆蓋1.5 mm軟骨盤半徑,電極7和8位于浴中軟骨的外部。試驗箱已裝滿加生理鹽水。在2μm/s、20μm的小步壓縮序列中施加100μm的靜態(tài)壓縮偏移量,在1、0.1和0.01hz的頻率下進行動態(tài)正弦測試,位移幅度分別為8、4和2μm,通過在復域中添加每個通道來構(gòu)造流電位徑向分布。用二甲基亞甲基藍染料和分光光度法測定培養(yǎng)皿中蛋白多糖或糖胺聚糖(GAG)的含量和培養(yǎng)過程中丟失的含量。
圖3顯示了培養(yǎng)過程中軟骨盤中GAG的含量。培養(yǎng)1、4、7和11天后,IL-1處理的培養(yǎng)皿分別損失了10%、20%、65%和75%的GAG含量。Mach-1易于使用,其模塊化軟件允許直接和快速分析動態(tài)正弦測試結(jié)果。圖4顯示培養(yǎng)11天后,IL-1處理的椎間盤的動態(tài)剛度比對照組低3倍。
應力松弛試驗結(jié)果分析表明,培養(yǎng)結(jié)束時,退化圓盤的靜態(tài)剛度比對照(0.3mpa)低4倍。圖5顯示了正常和退化軟骨培養(yǎng)11天后的流電位分布。我們觀察到IL-1處理的外植體在培養(yǎng)開始后的一天,其周邊的電位梯度比對照降低了一半。培養(yǎng)7d后,退化圓盤中心的電位波幅明顯低于對照外植體。
Mach-1型機械測試儀與電極陣列相結(jié)合,可j確測定大范圍正常和退化結(jié)締組織的機電特性。
結(jié)締組織機電特性的表征.2部分:彎月面

在本研究中,使用Mach-1型力學測試儀測定了軟骨和半月板兩種結(jié)締組織的機電特性。由于組織剛度和壓縮產(chǎn)生的電場(或流電位)對組織的生化成分敏感,測試儀與一組電極耦合,可以j確測量這些電信號。本研究的目的是建立正常和退化結(jié)締組織的生化成分和機電特性(剛度和流電位)之間的聯(lián)系。研究的二部分是半月板。
半月板是一種類似軟骨的組織,但較軟,電荷較少。在這種情況下,樣品從不同的區(qū)域被切割成5個3毫米的圓盤(大約1-2毫米厚)。測量了wu側(cè)限壓縮下的動剛度和流勢分布。值得注意的是,半月板的流動電位大約是軟骨的10倍(參見本案例研究的1部分)。這些結(jié)果還表明,與中間區(qū)域(盤3和5)相比,半月板內(nèi)部(盤1和盤2)軟骨表面的動態(tài)剛度和流動電位分布更高。這些結(jié)果與半月板蛋白多糖含量有直接關(guān)系。
Mach-1型機械測試儀與電極陣列相結(jié)合,可j確測定大范圍正常和退化結(jié)締組織的機電特性。
二、ARTHRO-BST型號的活體在體軟骨等壓縮流動電位測試評估系統(tǒng)
Arthro-BST是一種手持式醫(yī)療設(shè)備,設(shè)計用于手術(shù),以評估關(guān)節(jié)軟骨的功能特性。 通過壓縮軟骨表面,Arthro-BST測量流動電位并計算反映軟骨健康狀態(tài)的定量參數(shù)。
Benchtop Arthro-BST可對關(guān)節(jié)軟骨進行j確的wu損評估。 它計算了一個定量參數(shù),反映了每個測量部位的關(guān)節(jié)軟骨的生化成分和承重特性。 它是為有興趣僅在離體關(guān)節(jié)軟骨上使用該工具的研究人員開發(fā)的。 提供非wu菌一次性吸頭,可配備配備高分辨率相機和相機定位軟件的測試室,用于繪制大型骨軟骨樣本。
軟骨研究
Benchtop Arthro-BST在軟骨修復領(lǐng)域提供了大量研究機會。 它非常寶貴: - 了解軟骨疾病,包括軟骨退化的潛在原因
- 開發(fā)新的治療產(chǎn)品和軟骨修復技術(shù)
- 可靠的骨關(guān)節(jié)炎動物模型的概念
- 創(chuàng)建各種物種的參考映射
工作原理:
臺式Arthro-BST測量關(guān)節(jié)軟骨的壓縮誘導的流動電位。在溫和壓縮軟骨表面期間使用壓頭測量這些電信號(參見下圖)。te的壓頭設(shè)計包括覆蓋有37個微電極陣列的球形表面。
該裝置計算軟骨機電活動的定量參數(shù)(QP),其對應于當其流動電位的總和達到100mV時與軟骨接觸的微電極的數(shù)量。高QP表示弱機電特性,反之亦然。 QP是可再現(xiàn)的,并且與施加的力和壓頭取向wu關(guān)。
健康的軟骨正常流動電位:
在正常軟骨被壓縮時,相對于包埋在膠原網(wǎng)絡(luò)內(nèi)的帶負電荷的蛋白聚糖,間質(zhì)液的流動取代帶正電的移動離子。這產(chǎn)生稱為流動電位的電位。
關(guān)節(jié)炎軟骨低流動電位:
退化的軟骨的特征在于蛋白多糖的喪失和膠原網(wǎng)絡(luò)的減弱。由于相對于帶負電的蛋白多糖,正離子的位移較小,因此關(guān)節(jié)炎軟骨的壓縮產(chǎn)生異常低的流動電位。

典型測試材料:


Electromechanical properties of human osteoarthritic and asymptomatic articular cartilage are sensitive and early detectors of degenerationHadjab I, Sim S, Karhula S.S, Kauppinen S. Garon M, Quenneville E, Lavigne P, Lehenkari P.P and Buschmann MDOsteoarthritis Cartilage. doi: https://doi.org/10.1016/j.joca.2017.12.002. (2017)
Objective: To evaluate cross-correlations of ex vivo electromechanical properties with cartilage and subchondral bone plate thickness, as well as their sensitivity and specificity regarding early cartilage degeneration in human tibial...Read More /science/article/pii/S1063458417313572
Assessment of Human Articular Cartilage Issued from Asymptomatic & TKR DonorsHadjab I, Sim S, Quenneville E, Garon M and Buschmann MDBiomedical Engineering Society 2015 in Tampa, Floride
Introduction: Cartilage degeneration is a progressive process and currently, only end-stage surgical treatments such as total knee replacement (TKR) lead to an improved condition. To prevent or delay this surgery, several less invasive...Read More
Correlation of Non-destructive Electromechanical Probe (Arthro-BST) Assessment with Histological Scores and Mechanical Properties in Human Tibial PlateauSim S, Chevrier A, Garon M, Quenneville E and Buschmann MDOrthopeadic Research Society Annual Meeting in Las Vegas, 2015, Poster 1228
The purpose of the study was to investigate if electromechanical properties of human tibial plateau correlate strongly with histological scores and with biomechanical properties as in human distal femurs (Sim et al., 2014). Six pairs of tibial...Read More Sim-2015a-ORS2015-Poster.pdf
Evaluation of Entire Ovine Cartilage Repair Articular Surfaces: Mechanical and Electromechanical AssessmentSim S, Hadjab I, Garon M, Quenneville E, Hurtig MB, Buschmann MD and Hoemann CDTransactions of International Cartilage Repair Society (ICRS), Chicago, 2015, 7-11 May 2015, e-Poster: P87
Purpose: To demonstrate the ability of non-destructive electromechanical device and automated indentation technique in assessing the quality of cartilage in a sheep model of cartilage repair.
Methods: Ex vivo...Read More Sim-2015F-ICRS-Abstract.pdf
Sim-2015F-ICRS-ePoster.pdf
Sim-2015F-ICRS-Poster.pdf
Correlation of Non-destructive Electromechanical Probe (Arthro-BST) Assessment with Histological Scores, Biochemical Composition and Mechanical Properties in Human Knee JointsSim S, Chevrier A, Quenneville E, Garon M and Buschmann MDTransactions of the 60th Annual Meeting of the Orthopaedic Research Society, New Orleans, LA, USA, Poster 0439, 2014
Introduction: Histological scoring, biochemical analyses and biomechanical testing (unconfined compression) are often seen as gold standard characterizations for articular cartilage but can present major drawbacks in the context of animal and...Read More Sim-ORS2014a.pdf
Age-dependence of the Pattern of Cartilage Electromechanical Properties in the Ovine Stifle JointSim S, Picard G, Quenneville E, Garon M and Buschmann MDTransactions of the 59th Annual Meeting of the Orthopaedic Research Society, San Antonio, TX, USA, 2013.
Introduction: The biochemical composition and mechanical/electromechanical properties of articular cartilage evolve during growth. The objective of this study was to examine the age-dependence in the distribution pattern of electromechanical...Read More Sim-2013b-Poster.pdf
Streaming Potential-Based Arthroscopic Device Can Detect Changes Immediately Following Localized Impact in an Equine Impact Model of OsteoarthritisChangoor A, Quenneville E, Garon M, Hurtig MB and Buschmann MDOsteoarthritis and Cartilage, Vol. 17, Supplement 1, S53, World Congress on Osteoarthritis, September 2009, Montreal, Quebec, Canada. (2009)
Early Post-traumatic Osteoarthritis (PTOA) can be asymptomatic but represents a possible window of opportunity for therapeutic intervention before disease progression. Impact models are ideal for studying these strategies because the location and...Read More Changoor-OARSI2009-poster.pdf
Comparison Between In Vitro and Simulated Arthroscopy Electromechanical Measurements of Human Articular Surfaces Using the Arthro-BSTSim S, Becher C, Garon M, Quenneville E, Hurschler C and Buschmann MDInternational Cartilage Repair Society 2016 in Sorrento, Italy. Poster 132
Purpose: The output of the Arthro-BST was originally streaming potentials integral (SPI) parameter (Abedian-2013). Since then, the output has changed to a quantitative parameter (QP) (Sim-2014). The purpose of this study was to reanalyzed old...Read More Sim-2016C (ICRS2016 Poster).pdf
Sim-2016C (ICRS2016 Abstract Proof).pdf
Sim-2016C (ICRS2016 ePoster).pdf
/icrs2016/confcal/quenneville
Combined Mechanical Characterizations Increases Sensitivity in the Assessment of Human Cartilage DegenerationSim S, Hadjab I, Chevrolat L-A, Masse M, Tong AL, Lavigne P, Garon M, Quenneville E and Buschmann MDAccepted for a podium presentation at ORS 2017
Introduction: We published a recent study showing superior sensitivity of electromechanical and indentation (instantaneous response) assessments versus well-established techniques, including histological Mankin score, to characterize...Read More Sim-2017A (ORS2017 Abstract Proof).pdf
Non-destructive electromechanical assessment (Arthro-BST) of human articular cartilage correlates with histological scores and biomechanical propertiesSim S, Chevrier A, Garon M, Quenneville E, Yaroshinsky A, Hoemann CD and Buschmann MDOsteoarthritis Cartilage, 22(11) 1926-35. (2014)
OBJECTIVE:The hand-held Arthro-BST™ device is used to map electromechanical properties...Read More
https://www.ncbi.nlm.nih.gov/pubmed/
Electroarthrography, a non-invasive streaming potential-based method, measures cartilage quality in live horsesChangoor A, Brett W, Hoba MA, Garon M, Quenneville E, Gordon K, Savard P, Buschmann MD, Hurtig MB and Trout DROsteoarthritis and Cartilage, Vol. 22, Supplement 1, 138, World Congress on Osteoarthritis, April 2014, Paris, France.
Introduction: Degenerative joint diseases, including osteoarthritis, are characterized by progressive cartilage degeneration, which can lead to pain and loss of joint function. Therapeutics administered early, when only low grade cartilage...Read More Changoor-OARSI2014-Poster.pdf
Non-invasive Electroarthrography Correlates to Direct Measurements of Cartilage Streaming Potentials in Weight Bearing Regions of Equine Metacarpophalangeal (Fetlock) JointsChangoor A, Hoba MA, Garon M, Quenneville E, Gordon K, Savard P, Buschmann MD and Hurtig MBTransactions of the 60th Annual Meeting of the Orthopaedic Research Society, New Orleans, LA, USA, 1123 (2014)
Introduction/Purpose: Electroarthrography (EAG) is a new technology that non-invasively measures cartilage streaming potentials through electrodes contacting the skin surrounding an articular joint. Streaming potentials are produced during...Read More Changoor-ORS2014.pdf
Streaming Potential-Based Arthroscopic Device Discerns Topographical Differences In Cartilage Covered And Uncovered By Meniscus In Ovine Stifle JointsChangoor A, Quenneville E, Garon M, Cloutier L, Hurtig MB and Buschmann MDTransactions of the 53th Annual Meeting of the Orthopaedic Research Society, San Diego, CA, USA, 32:631. (2007)
Animal models of osteoarthritis have been used for understanding diseaseprogression and are essential for assessing potential new therapies. Ovine models, such as the lateral meniscectomy model, are of interest because meniscectomy models often...Read More Changoor-ORS2007-poster.pdf
Electroarthrography Provides a Non-invasive Streaming Potential-Based Method for Detecting Cartilage Degeneration in an Equine Model TransactionsChangoor A, Hoba MA, Quenneville E, Garon M, Gordon K, Buschmann MD, Savard P and Hurtig MBThe 59th Annual Meeting of the Orthopaedic Research Society, San Antonio, TX, USA, 1974. (2013)
Degenerative joint diseases, like osteoarthritis, are characterized by progressive cartilage degeneration, which can lead to pain and loss of mobility. Low-grade cartilage deterioration occurs early in disease progression and may be treatable....Read More Changoor-2013-Poster.pdf
Assessment of allograft performance in vivo using electromechanical properties of articular cartilageUsas A, Mickevicius T, Pockevicius A, Kucinskas A, Maciulaitis J and Gudas RInternational Cartilage Repair Society (ICRS), Sorrento, 2016, Poster P211
Purpose: Clinical outcome of osteochondral allograft transplantation (OAT) depends on allograft quality. There is a lack of rapid and reliable non-destructive methods for intraoperative evaluation of repaired cartilage. Measurement
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