MD266Z - Device for testing of biological material - Google Patents

Device for testing of biological material Download PDF

Info

Publication number
MD266Z
MD266Z MDS20100078A MDS20100078A MD266Z MD 266 Z MD266 Z MD 266Z MD S20100078 A MDS20100078 A MD S20100078A MD S20100078 A MDS20100078 A MD S20100078A MD 266 Z MD266 Z MD 266Z
Authority
MD
Moldova
Prior art keywords
biological material
fixed
testing
platform
arm
Prior art date
Application number
MDS20100078A
Other languages
Romanian (ro)
Inventor
Olga Belic
Efim Arama
Victor Sontea
Anatolie Iavorschi
Valeriu Pirtac
Efim Aramă
Victor Şontea
Valeriu Pirţac
Original Assignee
Univ Nicolae Testemitanu
Univ De Stat De Medicin & Abreve & Scedil I Farmacie Nicolae Testemi & Tcedil Anu Din Republica Mold
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Nicolae Testemitanu, Univ De Stat De Medicin & Abreve & Scedil I Farmacie Nicolae Testemi & Tcedil Anu Din Republica Mold filed Critical Univ Nicolae Testemitanu
Priority to MDS20100078A priority Critical patent/MD266Z/en
Publication of MD266Y publication Critical patent/MD266Y/en
Publication of MD266Z5 publication Critical patent/MD266Z5/en
Publication of MD266Z publication Critical patent/MD266Z/en

Links

Landscapes

  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention relates to medicine, in particular morphology and can be used for testing of biological material.The device for testing of biological material contains a carcass (1), mounted on a platform (2), on which is placed a step motor (3), the shaft of which is connected to a threaded rod (4), on which is mounted by a nut (6) a movable arm (5). One end of the movable arm (5) is freely mounted on a rod (8). On the platform (2) is fixed a strain gauge (10), connected to an immovable arm (11). At the ends of the movable (5) and immovable (11) arms are mounted two clamps (12) for fixation of biological material.The result is a precise definition of force and elongation of the biological material sample before rupture.

Description

Invenţia se referă la medicină, în special la morfologie, şi poate fi utilizată pentru testarea materialului biologic. The invention relates to medicine, in particular to morphology, and can be used for testing biological material.

Este cunoscut dispozitivul pentru determinarea gradului de extindere şi rezistenţă biologică a oaselor care constă din platformă cu două fixatoare metalice, pe care este instalată proba de os. La mijlocul probei, în partea superioară, este fixat un indicator de lungime, iar în partea inferioară - un taler cu greutăţi [1]. The device for determining the degree of biological expansion and resistance of bones is known, which consists of a platform with two metal clamps, on which the bone sample is installed. In the middle of the sample, in the upper part, a length indicator is fixed, and in the lower part - a plate with weights [1].

Dezavantajele dispozitivului sunt: materialul biologic se rupe brusc, nu se determină alungirea probei, forţa de rupere nu se determină în newtoni (N). The disadvantages of the device are: the biological material breaks suddenly, the elongation of the sample is not determined, the breaking force is not determined in newtons (N).

Problema pe care o rezolvă invenţia constă în elaborarea unui dispozitiv care ar permite de a vizualiza forţa şi lungimea în timpul investigaţiei, forţa în N şi lungimea de rupere în mm după finisarea investigaţiei, de a seta mărimea pasului şi numărul înregistrării în memorie. The problem that the invention solves consists in developing a device that would allow to visualize the force and length during the investigation, the force in N and the breaking length in mm after finishing the investigation, to set the step size and the number of the recording in the memory.

Problema se soluţionează prin aceea că dispozitivul pentru testarea materialului biologic conţine o carcasă fixată pe o platformă, pe care este plasat un motor pas-cu-pas, arborele căruia este unit cu o tijă cu filet, pe care este montat un braţ mobil printr-o piuliţă. Un capăt al braţului mobil este montat liber pe o tijă. Pe platformă este fixat un senzor tensiometric unit cu un braţ imobil. La capetele braţelor mobil şi imobil sunt montate două cleme pentru fixarea materialului biologic. The problem is solved by the fact that the device for testing biological material contains a housing fixed on a platform, on which a stepper motor is placed, the shaft of which is connected to a threaded rod, on which a movable arm is mounted by a nut. One end of the movable arm is freely mounted on a rod. A tensiometric sensor connected to a fixed arm is fixed on the platform. Two clamps are mounted at the ends of the movable and fixed arms for fixing the biological material.

Dispozitivul permite efectuarea lentă a extinderii până la ruperea completă a probei, indicând mărimi concrete ale forţei şi lungimii în timpul şi după finisarea investigaţiei. The device allows for slow expansion until the sample is completely broken, indicating specific force and length values during and after the investigation is completed.

Rezultatul constă în aprecierea exactă a forţei şi alungirii probei de material biologic până la rupere. The result consists of the exact assessment of the force and elongation of the biological material sample until rupture.

Invenţia se explică prin desenul din figură, care reprezintă partea mecanică a dispozitivului. The invention is explained by the drawing in the figure, which represents the mechanical part of the device.

Carcasa dispozitivului 1 este fixată din exterior pe o platformă metalică 2, pe care sunt situate elementele interioare şi motorul pas-cu-pas 3, arborele căruia este unit cu o tijă 4 cu filet, pe care este montat un braţ mobil 5 printr-o piuliţă 6. La ambele capete ale tijei cu filet sunt amplasate două colţare metalice 7. Un capăt al braţului mobil 5 este montat liber pe o tijă 8. Pe platforma 2 este fixat un senzor tensiometric 10 unit cu un braţ imobil 11. La capetele braţelor mobil 5 şi imobil 11 sunt montate două cleme 12 pentru fixarea materialului biologic. Colţarele metalice 7 sunt fixate cu un opritor 9, care împiedică deplasarea braţului mobil în afara filetului. The housing of the device 1 is fixed from the outside on a metal platform 2, on which the internal elements and the stepper motor 3 are located, the shaft of which is connected to a threaded rod 4, on which a movable arm 5 is mounted by a nut 6. At both ends of the threaded rod are located two metal brackets 7. One end of the movable arm 5 is freely mounted on a rod 8. On the platform 2 is fixed a tensiometric sensor 10 connected to a fixed arm 11. At the ends of the movable arms 5 and fixed 11 are mounted two clamps 12 for fixing the biological material. The metal brackets 7 are fixed with a stop 9, which prevents the movable arm from moving outside the thread.

Dispozitivul funcţionează în modul următor. The device operates in the following mode.

Între clemele 12 se fixează materialul biologic. Braţul mobil 5 este acţionat de motorul pas-cu-pas 3. Comanda motorului se face electronic. Senzorul tensiometric 10 transformă forţa de întindere a materialului biologic în semnal electronic. Acest semnal, după ce este amplificat şi filtrat, este transformat în valori numerice şi este prelucrat de către microprocesor. Aplicând operaţii matematice asupra acestor date se obţine valoarea forţei de întindere în N şi se afişează pe ecran. The biological material is fixed between the clamps 12. The mobile arm 5 is driven by the stepper motor 3. The motor is controlled electronically. The tensiometric sensor 10 converts the tensile force of the biological material into an electronic signal. This signal, after being amplified and filtered, is converted into numerical values and is processed by the microprocessor. By applying mathematical operations on these data, the value of the tensile force in N is obtained and displayed on the screen.

Exemplu de realizare a invenţiei Example of embodiment of the invention

Materialul se colectează în primele 24 ore după deces şi se studiază la temperatura de 20…24°±1C°. Din ligamentele supuse cercetării, prin şabloane - disecţie se obţin fâşii cu dimensiunile de 4,0 x 0,6 cm, care se fixează în clemele dispozitivului (lungimea fâşiilor ligamentare supuse extensiei este de 25 mm). Se porneşte motorul pas-cu-pas 3. Extinderea materialului biologic se efectuează până la ruperea probei. Senzorul tensiometric 10 transformă forţa de întindere a materialului în semnal electronic. Mărimea forţei şi lungimii de rupere se afişează pe ecran. The material is collected within the first 24 hours after death and studied at a temperature of 20…24°±1C°. From the ligaments subjected to research, strips with dimensions of 4.0 x 0.6 cm are obtained through dissection templates, which are fixed in the device clamps (the length of the ligament strips subjected to extension is 25 mm). The stepper motor 3 is turned on. The biological material is extended until the sample breaks. The tensiometric sensor 10 converts the stretching force of the material into an electronic signal. The magnitude of the force and the length of the break are displayed on the screen.

Acest dispozitiv a fost utilizat în condiţii de laborator morfologic şi a permis stabilirea gradului de extensie maximă (alungirea absolută), limitei tenacităţii (rezistenţa la extindere) şi coeficientului de elasticitate (modulul Zoung) al materialului biologic. Dispozitivul poate fi aplicat simplu, nu necesită cunoştinţe speciale şi poate fi utilizat în orice laborator medical. Permite micşorarea distanţei între cleme la minimum, deci testarea unei game largi de ţesuturi biologice. This device was used in morphological laboratory conditions and allowed to determine the degree of maximum extension (absolute elongation), the limit of tenacity (resistance to extension) and the coefficient of elasticity (Zoung modulus) of the biological material. The device can be applied simply, does not require special knowledge and can be used in any medical laboratory. It allows to reduce the distance between the clamps to a minimum, thus testing a wide range of biological tissues.

1. Горский Ф.К., Сакевич Н.М. Физический практикум с элементами электроники. Минск, 1980, с. 32-34 1. Горский Ф.К., Sakevich Н.М. Physical practice with electronic elements. Minsk, 1980, p. 32-34

Claims (1)

Dispozitiv pentru testarea materialului biologic, care conţine o carcasă (1) fixată pe o platformă (2), pe care este plasat un motor pas-cu-pas (3), arborele căruia este unit cu o tijă (4) cu filet, pe care este montat un braţ mobil (5) printr-o piuliţă (6), totodată un capăt al braţului mobil (5) este montat liber pe o tijă (8), de asemenea pe platformă (2) este fixat un senzor tensiometric (10) unit cu un braţ imobil (11); la capetele braţelor mobil (5) şi imobil (11) sunt montate două cleme (12) pentru fixarea materialului biologic.Device for testing biological material, which contains a housing (1) fixed on a platform (2), on which a stepper motor (3) is placed, the shaft of which is connected to a threaded rod (4), on which a movable arm (5) is mounted by a nut (6), at the same time one end of the movable arm (5) is freely mounted on a rod (8), also on the platform (2) is fixed a tensiometric sensor (10) connected to a fixed arm (11); at the ends of the movable (5) and fixed arms (11) are mounted two clamps (12) for fixing the biological material.
MDS20100078A 2010-04-26 2010-04-26 Device for testing of biological material MD266Z (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MDS20100078A MD266Z (en) 2010-04-26 2010-04-26 Device for testing of biological material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MDS20100078A MD266Z (en) 2010-04-26 2010-04-26 Device for testing of biological material

Publications (3)

Publication Number Publication Date
MD266Y MD266Y (en) 2010-08-31
MD266Z5 MD266Z5 (en) 2011-03-31
MD266Z true MD266Z (en) 2011-03-31

Family

ID=45815128

Family Applications (1)

Application Number Title Priority Date Filing Date
MDS20100078A MD266Z (en) 2010-04-26 2010-04-26 Device for testing of biological material

Country Status (1)

Country Link
MD (1) MD266Z (en)

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2035907A1 (en) * 1990-02-08 1991-08-09 Phillip M. Lintilhac Instrument for the application of controlled mechanical loads to tissues in sterile cultures
CN2102511U (en) * 1991-11-07 1992-04-22 山东医科大学 Measuring device of boilogical material mechanics
DE4229549A1 (en) * 1992-09-04 1994-03-10 Christoph Prof Dr Hartung Determination method for mechanical properties of biological tissue - using in situ measuring head applying dynamic twisting
RU2112230C1 (en) * 1996-09-30 1998-05-27 Акционерное общество закрытого типа "Литаформ" Gear testing materials for strength
JP3459633B2 (en) * 1998-09-18 2003-10-20 バイオ−ラッド ラボラトリーズ,インコーポレイティド Biaxial strain system for cultured cells
US6107081A (en) * 1999-02-05 2000-08-22 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Uni-directional cell stretching device
RU2178161C2 (en) * 2000-02-11 2002-01-10 Таганрогский государственный радиотехнический университет Set to test materials for strength
DE10041988B4 (en) * 2000-08-26 2006-02-09 Artmann, Gerhard, Prof. Dr. Apparatus and method for measuring forces of living material
ATE340251T1 (en) * 2002-01-15 2006-10-15 Biogentis Inc METHOD AND SYSTEM FOR THE CONTROLLED MECHANICAL LOADING OF A TISSUE CONSTRUCT
RU2279658C1 (en) * 2004-11-09 2006-07-10 Открытое акционерное общество "Точприбор" Device for tensile and compression tests
MD3948G2 (en) * 2008-03-28 2010-02-28 Институт Прикладной Физики Академии Наук Молдовы Device for determining the lubricating ability of lubricants
RU2376567C1 (en) * 2008-09-29 2009-12-20 Федеральное Государственное Образовательное Учреждение Высшего Профессионального Образования "Южный Федеральный Университет" Device for bending test of thin specimens
DE102008050465B4 (en) * 2008-10-08 2012-12-13 Zwick Gmbh & Co. Kg Device for performing component and material tests on samples
RU2377531C1 (en) * 2008-11-24 2009-12-27 Государственное учреждение Физико-технический институт Уральского отделения Российской академии наук Method for loading of flat sample
RU2380674C1 (en) * 2008-12-24 2010-01-27 Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" Installation for fatigue testing annular samples of materials
RU90562U1 (en) * 2009-09-22 2010-01-10 Государственное образовательное учреждение высшего профессионального образования "Тюменский государственный нефтегазовый университет" INSTALLATION FOR TESTING TENSION COATINGS
  • 2010

Also Published As

Publication number Publication date
MD266Y (en) 2010-08-31
MD266Z5 (en) 2011-03-31

Similar Documents

Publication Publication Date Title
Vallabhaneni et al. Heterogeneity of tensile strength and matrix metalloproteinase activity in the wall of abdominal aortic aneurysms
EP2293081A3 (en) Analyzing apparatus and analyzing method
Ettema et al. A new method to measure elastic properties of plastic-viscoelastic connective tissue
Tamura et al. Mechanical characterization of brain tissue in high-rate extension
Oyen et al. Uniaxial stress–relaxation and stress–strain responses of human amnion
MD266Z (en) Device for testing of biological material
WO2007136848A3 (en) Interactive device for monitoring and reporting glucose levels
Pan et al. Brain stiffness in epilepsy’s patients by indentation test
RU2372593C2 (en) Method for measurement of armature tension
CN201340418Y (en) Blood rheometer testing device
CN201544430U (en) Clamping force measuring device for injection molding machine
RU2735134C1 (en) Device for determining strength properties of solid materials
RU2396900C2 (en) Apparatus for evaluating degree of bone tissue restoration
CN205493869U (en) Flesh bone ultrasonic testing probe unit
EP2565598A3 (en) Scale
RU2538414C2 (en) Device for determining modulus of elasticity of structural materials
US2042457A (en) Stretch and compression testing device
Hsieh et al. Non-destructive natural frequency tests of cyclic fatigue-loaded nickel–titanium rotary instruments
Epple Monitoring of Concrete with Embedded Ultrasound Sensors, Coda Waves and a Novel Measurement Device
CN100545628C (en) A calibration method and signal generator for accurate data acquisition rate of strength instrument
Kuhinek et al. Development of virtual instrument for uniaxial compression testing of rock samples
RU163084U1 (en) MECHANICAL RANOTENSIOMETER
RU78653U1 (en) DEVICE FOR SIZING SOFT-WOVEN STRUCTURES
Meng et al. Characterization of Alkali-Silica Reaction Products by means of Raman Spectroscopy before and after Application of Accelerated Tests
Kadyseva et al. Determination of physical and chemical parameters that can be used to predict the hemostatic activity of chitosan without conducting in vivo experiments

Legal Events

Date Code Title Description
ND4Y Validity of short term patent extended [from 6 to 10 years]

Expiry date: 20200426

KA4Y Short-term patent lapsed due to non-payment of fees (with right of restoration)
MM4Y Short-term patent definitely lapsed due to non-payment of fees