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CN-121994599-A - Device for detecting tensile strength and elongation of magnesia coaxial electrospun bone biomaterial

CN121994599ACN 121994599 ACN121994599 ACN 121994599ACN-121994599-A

Abstract

The invention discloses a device for detecting tensile strength and elongation of a magnesia coaxial electrospun bone biomaterial, which belongs to the technical field of material detection and comprises a clamping mechanism, wherein two sides of the clamping mechanism are connected with a loading mechanism, the device also comprises a detection mechanism for detecting elongation, the clamping mechanism comprises a first side plate and a second side plate, the lower side of the first side plate is rotationally connected with a guide rod, a guide sleeve is rotationally arranged on the second side plate, the guide rod is slidingly inserted into the guide sleeve, a first bearing plate and a second bearing plate are arranged on the first side plate and the second side plate, a first slideway and a second slideway which are symmetrically arranged are respectively arranged on the first side plate and the second side plate, a pressing rod is slidingly connected in the first slideway and the second slideway, a first pressing block is fixedly connected to the lower side of the pressing rod, a second pressing block is slidingly connected to the pressing rod, and the upper end of the pressing rod is connected with a hydraulic driving rod. The invention has the advantages of quick clamping and multi-angle compound loading.

Inventors

  • ZHONG ZONGYU
  • CUI JIANXUN

Assignees

  • 昆明医科大学第一附属医院(云南省皮肤病医院)

Dates

Publication Date
20260508
Application Date
20260318

Claims (10)

  1. 1. The device for detecting the tensile strength and the elongation of the magnesia coaxial electrospun bone biological material comprises a clamping mechanism, wherein loading mechanisms are connected to two sides of the clamping mechanism, and the device further comprises a detection mechanism for detecting the elongation, and is characterized in that the clamping mechanism comprises a first side plate (1) and a second side plate (2), a guide rod (3) is rotationally connected to the lower side of the first side plate (1), a guide sleeve (4) is rotationally arranged on the second side plate (2), the guide rod (3) is slidingly inserted into the guide sleeve (4), a first bearing plate (5) and a second bearing plate (6) are arranged on the first side plate (1) and the second side plate (2), a first slideway (7) and a second slideway (8) which are symmetrically arranged are respectively arranged are arranged on the first side plate (1) and the second side plate (2), a pressing rod (9) is slidingly connected to the lower side of the pressing rod (9) and a first pressing block (10) is fixedly connected to the lower side of the pressing rod (9), and a pressing rod (12) is slidingly connected to the second pressing rod (11).
  2. 2. The magnesia coaxial electrospun bone biomaterial tensile strength and elongation detection device as claimed in claim 1, wherein: The novel guide sleeve is characterized in that a first notch (13) is formed in the lower side of the first side plate (1), a first rotating shaft (14) is rotationally connected to the first notch (13), the first rotating shaft (14) is fixedly connected with the guide rod (3), a second notch (15) is formed in the lower side of the second side plate (2), a second rotating shaft (16) is rotationally connected to the second notch (15), and the second rotating shaft (16) is fixedly connected to the guide sleeve (4).
  3. 3. The magnesia coaxial electrospun bone biomaterial tensile strength and elongation detection device as claimed in claim 2, wherein: The upper surfaces of the first bearing plate (5) and the second bearing plate (6) are provided with arc-shaped grooves (17), the lower surfaces of the first pressing block (10) and the second pressing block (11) are provided with arc-shaped surfaces, and the arc-shaped surfaces can extend into the arc-shaped grooves (17).
  4. 4. The magnesium oxide coaxial electrospun bone biomaterial tensile strength and elongation sensing device as claimed in claim 3, wherein: A semicircular plate (18) is fixedly connected to the guide rod (3), scales are arranged on the edge of the semicircular plate (18), and the axis of the semicircular plate (18) is coincident with the axis of the first rotating shaft (14); The novel semicircular plate is characterized in that a screw hole is formed in the first side plate (1), a screw rod (19) is connected in the screw hole, and the screw rod (19) can be pressed and attached to the semicircular plate (18).
  5. 5. The device for detecting the tensile strength and the elongation of the magnesia coaxial electrospun bone biomaterial according to claim 4, wherein: A third slideway (20) is arranged on the side part of the first slideway (7), a first lantern ring (21) is fixedly connected to the pressure lever (9), first round rods (22) are fixedly connected to the two sides of the first lantern ring (21), and the first round rods (22) are slidably connected to the third slideway (20); The lateral part of second slide (8) is equipped with fourth slide (23), sliding sleeve has cup jointed second lantern ring (24) on depression bar (9), second lantern ring (24) both sides fixedly connected with second round bar (25), sliding connection on second round bar (25) in fourth slide (23).
  6. 6. The device for detecting the tensile strength and the elongation of the magnesia coaxial electrospun bone biomaterial according to claim 5, wherein: One side of first loading board (5) keep away from first curb plate (1) fixedly connected with is first perpendicular clamp plate (26), one side of second loading board (6) keep away from second curb plate (2) fixedly connected with is second perpendicular clamp plate (27), the side of first perpendicular clamp plate (26) with the side of first briquetting (10) aligns, the side of second perpendicular clamp plate (27) with the side of second briquetting (11) aligns.
  7. 7. The device for detecting the tensile strength and the elongation of the magnesia coaxial electrospun bone biomaterial according to claim 6, wherein: The upper end of the pressure rod (9) is provided with a containing slide way (28), a sliding block (29) is connected in the containing slide way (28) in a sliding way, and the hydraulic driving rod (12) is connected with the sliding block (29) through a tension sensor (30).
  8. 8. The magnesia coaxial electrospun bone biomaterial tensile strength and elongation sensing device as claimed in claim 7, wherein: The first side plate (1) and the second side plate (2) are provided with two first elastic rubber films which are laterally distributed and a second elastic rubber film which is arranged along the edge of the bottom, and the upper sides of the first pressing block (10) and the second pressing block (11) are provided with third elastic rubber films which can form a closed space.
  9. 9. The magnesia coaxial electrospun bone biomaterial tensile strength and elongation detection device as claimed in claim 8, wherein: the two sides of the first side plate (1) and the second side plate (2) are provided with connecting pieces for connecting a loading mechanism, and the loading mechanism is arranged as a loading mechanism capable of adjusting the upper and lower positions.
  10. 10. The magnesia coaxial electrospun bone biomaterial tensile strength and elongation detection device as claimed in claim 9, wherein: the connecting piece comprises a connecting plate (31) and a connecting shaft (32), and the connecting piece is positioned on two sides of the first slideway (7) and the second slideway (8).

Description

Device for detecting tensile strength and elongation of magnesia coaxial electrospun bone biomaterial Technical Field The invention belongs to the technical field of material detection, and particularly relates to a device for detecting tensile strength and elongation of a magnesia coaxial electrospun bone biomaterial. Background The mechanical property of the bone biomaterial is a core index for evaluating the clinical applicability of the bone biomaterial, in particular to the magnesium oxide coaxial electrospun bone biomaterial which has a bionic fiber structure and good biocompatibility and has wide application prospect in the field of bone tissue engineering. At present, most of mechanical detection devices for electrospun bone biological materials are of a single axial stretching structure, only the strength and the elongation of the materials in a horizontal stretching state can be tested, and the oblique composite stress environment born by human bones in physiological activities cannot be simulated, so that the detection result has deviation from the in-vivo actual stress performance. Meanwhile, the traditional clamping mechanism adopts a bolt fastening or pneumatic clamping mode, the operation steps are complex, the time for clamping and disassembling a sample is long, and the edge of the electrospun membrane material is easily torn due to uneven clamping force, so that the detection precision is affected. In addition, the clamping and loading module of the existing device is poor in linkage, when the oblique loading mode needs to be switched, the reinstallation clamp needs to be disassembled or the external support needs to be adjusted, the operation is complex, the angle precision is difficult to guarantee, and the detection requirements of high efficiency and multiple working conditions cannot be met. Therefore, a detection device with the rapid clamping and multi-angle composite loading functions is developed, and the detection device has important significance for promoting performance evaluation and clinical transformation of the magnesia coaxial electrospun bone biological material. Disclosure of Invention Aiming at the problems existing in the prior art, the invention provides a device for detecting the tensile strength and the elongation of a magnesia coaxial electrospun bone biomaterial, which has the advantages of rapid clamping and multi-angle composite loading, and solves the problems in the prior art. The invention discloses a device for detecting tensile strength and elongation of a magnesia coaxial electrospun bone biomaterial, which comprises a clamping mechanism, wherein two sides of the clamping mechanism are connected with a loading mechanism and a detection mechanism for detecting elongation, the clamping mechanism comprises a first side plate and a second side plate, the lower side of the first side plate is rotationally connected with a guide rod, a guide sleeve is rotationally arranged on the second side plate, the guide rod is slidingly inserted into the guide sleeve, a first bearing plate and a second bearing plate are arranged on the first side plate and the second side plate, a first slideway and a second slideway which are symmetrically arranged are respectively arranged on the first side plate and the second side plate, a pressing rod is slidingly connected in the first slideway and the second slideway, the lower side of the pressing rod is fixedly connected with a first pressing block, the pressing rod is slidingly connected with a second pressing block, and the upper end of the pressing rod is connected with a hydraulic driving rod. The guide sleeve is characterized in that a first notch is formed in the lower side of the first side plate, a first rotating shaft is rotatably connected to the first notch, the first rotating shaft is fixedly connected with the guide rod, a second notch is formed in the lower side of the second side plate, a second rotating shaft is rotatably connected to the second notch, and the second rotating shaft is fixedly connected to the guide sleeve. As a preferable mode of the invention, the upper surfaces of the first bearing plate and the second bearing plate are provided with arc grooves, the lower surfaces of the first pressing block and the second pressing block are provided with arc surfaces, and the arc surfaces can extend into the arc grooves. As the preferable mode of the invention, the semicircular plate is fixedly connected to the guide rod, scales are arranged at the edge of the semicircular plate, the axis of the semicircular plate is coincident with the axis of the first rotating shaft, a screw hole is formed in the first side plate, a screw rod is connected in the screw hole, and the screw rod can be tightly attached to the semicircular plate. The side part of the second slide way is provided with a fourth slide way, the compression bar is sleeved with a second sleeve ring in a sliding way, two sides of the second sleeve ring