Multi-dimensional mechanical property evaluation device for femoral head

Abstract

The utility model discloses a femoral head multi-dimensional mechanical property evaluation device which comprises a supporting mechanism, a pressure applying mechanism used for pressing the femoral head is arranged in an inner cavity of the supporting mechanism, and a water pipe used for conducting liquid pressurization on a taper hole of the femoral head to be detected is arranged on the supporting mechanism. The inner cavity of the supporting mechanism is also provided with a rotating mechanism for driving the pressure applying mechanism to rotate so as to realize a multi-dimensional pressure test, and an angle adjusting mechanism for adjusting the angle of the pressure applying mechanism is arranged between the rotating mechanism and the supporting mechanism; through cooperative use of the supporting mechanism, the pressure applying mechanism and the water pipe, pressure can be applied to the to-be-tested femoral head from top to bottom and from bottom to top, through cooperative use of the rotating mechanism and the angle adjusting mechanism, the pressure applying angle of the pressure applying mechanism can be adjusted, and multi-angle pressure can be applied to the to-be-tested femoral head; therefore, multi-dimensional detection of the to-be-detected femoral head is realized, and the accuracy of the mechanical property evaluation result of the femoral head is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to femoral head evaluation technical field, especially a kind of femoral head multidimensional mechanical property evaluation device. BACKGROUND

[0002] Femoral head is round, about 2 / 3 of a spherical ball, which is completely covered by articular cartilage, there is a small nest in its top slightly behind, called femoral head concave, femoral head ligament attachment, femoral head can obtain a small amount of blood supply from it.

[0003] The patent document with the announcement number CN103908360B discloses a kind of alumina ceramic femoral head guarantee test device and use method, by simulating the stress state of alumina ceramic femoral head in human body, utilize hydraulic pressure to the inner surface of the taper hole of alumina ceramic femoral head, under the condition of not damaging qualified product (i.e. alumina ceramic femoral head), eliminate those products (i.e. alumina ceramic femoral head) with strength hidden danger, improve the safety of product (i.e. alumina ceramic femoral head).After guarantee test, the breakage rate of alumina ceramic femoral head is significantly reduced.The guarantee test device of the application has simple structure, is easy to operate, and has low production cost, and the use method of the guarantee test device is simple and fast, and unqualified products can be eliminated, and qualified products will not be damaged.

[0004] Although the alumina ceramic femoral head guarantee test device and use method described above can solve the corresponding technical problems, it only applies water pressure to the tested alumina ceramic femoral head from bottom to top through the high-pressure water transmission pipe, however, in standing, walking, running, jumping, femoral head is subjected to force in different directions, so it is difficult to evaluate the multidimensional mechanical property of femoral head by pressure test in a certain direction.

[0005] Therefore, a kind of femoral head multidimensional mechanical property evaluation device is proposed. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a kind of femoral head multidimensional mechanical property evaluation device, to solve the problems raised in the above background.

[0007] In order to achieve the above purpose, the main technical scheme adopted by the utility model includes:

[0008] A kind of femoral head multidimensional mechanical property evaluation device, comprising:

[0009] The support mechanism is internally provided with a pressing mechanism for pressing the femoral head, and is externally provided with a water pipe for pressurizing the conical hole of the femoral head to be measured.

[0010] The rotating mechanism comprises a motor arranged on the angle adjusting mechanism, a first supporting plate fixedly connected to an output shaft of the motor, a second supporting plate fixedly connected to one side of the first supporting plate, and the second supporting plate is arranged on the pressing mechanism.

[0011] As a preferred technical solution, the support mechanism comprises a bottom plate, an L-shaped supporting plate fixedly connected to a rear side of a top portion of the bottom plate, the angle adjusting mechanism arranged on a top portion of an inner wall surface of the L-shaped supporting plate, and a bearing table fixedly connected to a center of the top portion of the bottom plate for bearing the femoral head to be measured.

[0012] As a preferred technical solution, the bottom plate is fixedly connected with supporting legs at four corners thereof, and a horizontal line at a bottom end of the supporting legs is lower than a horizontal line at a bottom portion of the water pipe.

[0013] As a preferred technical solution, one end of the water pipe penetrates through the top portion of the bearing table and is installed in cooperation with the conical hole of the femoral head to be measured, and the other end of the water pipe is in communication with an external high-pressure water pump.

[0014] As a preferred technical solution, the pressing mechanism comprises a pneumatic cylinder fixedly connected to a bottom portion of the second supporting plate, an installation plate fixedly connected to an output end of the pneumatic cylinder, a connecting plate detachably installed at a bottom portion of the installation plate, and an acetabulum body fixedly connected to a bottom portion of the connecting plate and matched with the femoral head to be measured.

[0015] As a preferred technical solution, the angle adjusting mechanism comprises two fixed plates fixedly connected to two sides of the top portion of the inner wall surface of the L-shaped supporting plate, the two fixed plates are symmetrically arranged about the motor, an arc-shaped hollow frame is fixedly connected to a bottom portion of each of the fixed plates, a guide column is slidably arranged in an inner cavity of the arc-shaped hollow frame, and one end of the guide column is fixedly connected to the motor.

[0016] As a preferred technical solution, an outer thread is arranged on a surface of the guide column, a threaded sleeve is sleeved on the surface of the guide column, and the threaded sleeve is located at a side of the arc-shaped hollow frame away from the motor.

[0017] As a preferred technical solution, a rubber gasket is sleeved on the surface of the guide column, and the rubber gasket is located between the arc-shaped hollow frame and the threaded sleeve.

[0018] The utility model at least has the following beneficial effects:

[0019] The femoral head multidimensional mechanical property evaluation device can press the femoral head from top to bottom and from bottom to top through the cooperation of the supporting mechanism, the pressing mechanism and the water pipe, can adjust the pressing angle of the pressing mechanism through the cooperation of the rotating mechanism and the angle adjusting mechanism, can press the femoral head at multiple angles, and thus realizes multidimensional detection of the femoral head, thereby helping to improve the accuracy of the evaluation result of the mechanical property of the femoral head. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the pressing mechanism of the femoral head multidimensional mechanical property evaluation device in a vertical state.

[0021] Figure 2 It is a structural schematic view of the pressing mechanism of the femoral head multidimensional mechanical property evaluation device in an inclined state.

[0022] Figure 3 It is a structural front view of the femoral head multidimensional mechanical property evaluation device.

[0023] Figure 4 It is an exploded structural schematic view of the rotating mechanism and the angle adjusting mechanism of the femoral head multidimensional mechanical property evaluation device.

[0024] In the figure: 100, supporting mechanism; 110, bottom plate; 120, L-shaped support plate; 130, bearing table; 140, supporting leg; 200, pressing mechanism; 210, air cylinder; 220, mounting plate; 230, connecting plate; 240, acetabular body; 300, water pipe; 400, rotating mechanism; 410, motor; 420, first supporting plate; 430, second supporting plate; 500, angle adjusting mechanism; 510, fixed plate; 520, arc-shaped hollow frame; 530, guide column; 540, screw sleeve; 550, rubber gasket. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Please refer to Figures 1-4The utility model discloses an embodiment provides a femoral head multidimensional mechanics performance evaluation device, including support mechanism 100, be used for the pressure mechanism 200 of pressure holding femoral head, be used for the liquid pressure of the taper hole of the femoral head of measurement, water pipe 300, be used for driving pressure mechanism 200 rotation to realize multidimensional pressure test rotating mechanism 400 and be used for the angle of pressure mechanism 200 angle adjusting mechanism 500, adjusting mechanism 500, rotating mechanism 400 and pressure mechanism 200 are sequentially arranged in the inner chamber of support mechanism 100 from top to bottom, and water pipe 300 is arranged on support mechanism 100, rotating mechanism 400 includes the motor 410 of adjusting mechanism 500, and the output shaft of motor 410 is fixedly connected with first supporting plate second supporting plate 420, and one side of first supporting plate second supporting plate 420 is fixedly connected with 430, and 430 is arranged on pressure mechanism 200, and the included angle between first supporting plate second supporting plate 420 and 430 is greater than ninety degrees.

[0027] Wherein, support mechanism 100 includes bottom plate 110, and the rear side of the top of bottom plate 110 is fixedly connected with L-shaped support plate 120, and adjusting mechanism 500 is arranged on the top of the inner wall surface of L-shaped support plate 120, and the center of the top of bottom plate 110 is fixedly connected with bearing table 130 for supporting the femoral head to be measured, and support mechanism 100 can provide support basis for the femoral head to be measured, pressure mechanism 200, water pipe 300, rotating mechanism 400 and adjusting mechanism 500.

[0028] Wherein, the four corners of the bottom of bottom plate 110 are fixedly connected with supporting leg 140, and the horizontal line of the bottom end of supporting leg 140 is lower than the horizontal line of the bottom of water pipe 300, and supporting leg 140 can support and elevate bottom plate 110, avoid the phenomenon of pressure loss caused by the direct contact between water pipe 300 and operation table, and help to prolong the service life of water pipe 300.

[0029] Wherein, one end of water pipe 300 penetrates to the top of bearing table 130 and is installed in cooperation with the taper hole of the femoral head to be measured, and the other end of water pipe 300 is in communication with an external high-pressure water pump.

[0030] It should be noted that the use principle of the above-mentioned water pipe 300 is consistent with the high-pressure water transmission pipe in the alumina ceramic femoral head guarantee test device and use method disclosed in the existing publication No. CN103908360B. By starting the external high-pressure water pump, water pressure can be applied to the femoral head to be measured to simulate the stress state of the femoral head cooperated with the metal taper handle. It is prior art, so it will not be described in detail in this technical solution.

[0031] The pressing mechanism 200 comprises a cylinder 210 fixedly connected with the bottom of the 430, the output end of the cylinder 210 is fixedly connected with a mounting plate 220, the bottom of the mounting plate 220 is detachably installed with a connecting plate 230 through screw and nut cooperation, the bottom of the connecting plate 230 is fixedly connected with a acetabulum body 240 matched with the femoral head to be measured, by starting the cylinder 210, the output end of the cylinder 210 can drive the mounting plate 220, the connecting plate 230 and the acetabulum body 240 to move towards the femoral head to be measured, so that the acetabulum body 240 can press towards the femoral head to be measured, which can cooperate with the bearing table 130 to realize the fixing operation of the femoral head to be measured, so as to realize the liquid pressure operation from bottom to top of the tapered hole of the femoral head to be measured, and can continuously press towards the femoral head to be measured, so as to realize the solid pressure operation from top to bottom of the surface of the femoral head.

[0032] The angle adjusting mechanism 500 comprises two fixed plates 510 fixedly connected with the top of the inner wall of the L-shaped supporting plate 120 on both sides, the fixed plates 510 are symmetrically arranged about the motor 410, the bottom of the fixed plate 510 is fixedly connected with an arc hollow frame 520, the inner cavity of the arc hollow frame 520 is slidably penetrated by a guide column 530, one end of the guide column 530 is fixedly connected with the motor 410, through the angle adjusting mechanism 500, the rotating mechanism 400 can be supported, and when the rotating mechanism 400 moves, the rotating mechanism 400 drives the guide column 530 to slide in the inner cavity of the arc hollow frame 520, so that the rotating mechanism 400 also drives the pressing mechanism 200 to move synchronously, so that the pressing mechanism 200 is in an inclined state, and then the motor 410 is started, the output shaft of the motor 410 drives the pressing mechanism 200 to rotate, and then the acetabulum body 240 can rotate around the surface of the femoral head to be measured, so that the pressing mechanism 200 can press the femoral head to be measured in multiple dimensions.

[0033] The surface of the guide column 530 is provided with external threads, the surface of the guide column 530 is sleeved with a screw sleeve 540, and the screw sleeve 540 is located on the side of the arc hollow frame 520 away from the motor 410, through the cooperation of the guide column 530 and the screw sleeve 540, the motor 410 can be locked and positioned, so that the motor 410 can stably remain at the required position, so as to facilitate the subsequent pressing operation of the pressing mechanism 200.

[0034] The surface of the guide column 530 is sleeved with a rubber gasket 550, and the rubber gasket 550 is located between the arc hollow frame 520 and the screw sleeve 540, through the rubber gasket 550, the screw sleeve 540 can avoid direct contact with the surface of the arc hollow frame 520 to cause abrasion, and the rubber gasket 550 can also increase the friction between the screw sleeve 540 and the arc hollow frame 520, which helps to improve the stability of the threaded connection between the screw sleeve 540 and the guide column 530, and further ensures the locking firmness of the rotating mechanism 400.

[0035] The working principle of the utility model is: through installing the femoral head to be detected on the end of water pipe 300, starting cylinder 210, the output end of cylinder 210 drives mounting plate 220, connecting plate 230 and acetabulum body 240 to move downwards until acetabulum body 240 contacts the femoral head to be detected, the limiting effect of the femoral head to be detected can be completed, starting the external high-pressure water pump, water is applied to the femoral head to be detected from bottom to top through water pipe 300 to simulate the stress state of the cooperation on the metal taper handle, the output end of cylinder 210 continues to drive acetabulum body 240 to move downwards, acetabulum body 240 applies pressure to the femoral head to be detected from top to bottom to simulate the stress state of the cooperation in acetabulum body 240, by loosening screw sleeve 540, the rotation mechanism 400 is unlocked, then moving motor 410, motor 410 drives first supporting plate 420, second supporting plate 430, pressure applying mechanism 200, guide column 530, screw sleeve 540 and rubber washer 550 to move synchronously, screw sleeve 540 slides in the inner cavity of arc hollow frame 520, and then the position of acetabulum body 240 on the surface of the femoral head to be detected can be adjusted, after adjustment, screw sleeve 540 is tightened, motor 410 is started, the output shaft of motor 410 drives first supporting plate 420, second supporting plate 430 and pressure applying mechanism 200 to rotate, so that acetabulum body 240 can rotate on the surface of the femoral head to be detected for 360 degrees, further adjusting the position of acetabulum body 240 on the surface of the femoral head to be detected, at this time, cylinder 210 can be started again to apply pressure to the femoral head to be detected obliquely to simulate the multi-angle stress state of the cooperation in acetabulum body 240, and then the femoral head to be detected is detected in multidimension, thereby helping to improve the accuracy of the mechanical property evaluation result of the femoral head.

[0036] The parts not involved in the utility model are the same as the prior art or can be realized by using the prior art. Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A femoral head multidimensional mechanical property evaluation device, characterized in that, Include: Supporting mechanism (100), the inner cavity is provided with a pressing mechanism (200) for pressing the femoral head, the supporting mechanism (100) is provided with a water pipe (300) for the liquid pressure of the conical hole of the femoral head to be measured, the inner cavity of the supporting mechanism (100) is further provided with a rotating mechanism (400) for driving the pressing mechanism (200) to rotate to realize multidimensional pressure test, the rotating mechanism (400) and the supporting mechanism (100) are provided with an angle adjusting mechanism (500) for adjusting the angle of the pressing mechanism (200) between them; Wherein, the rotating mechanism (400) includes a motor (410) arranged on the angle adjusting mechanism (500), the output shaft of the motor (410) is fixedly connected with a first supporting plate (420), one side of the first supporting plate (420) is fixedly connected with a second supporting plate (430), and the second supporting plate (430) is arranged on the pressing mechanism (200).

2. The femoral head multi-dimensional mechanical property evaluation device according to claim 1, characterized in that: The supporting mechanism (100) includes a bottom plate (110), the rear side of the top of the bottom plate (110) is fixedly connected with an L-shaped supporting plate (120), the angle adjusting mechanism (500) is arranged on the top of the inner wall surface of the L-shaped supporting plate (120), and the center of the top of the bottom plate (110) is fixedly connected with a bearing table (130) for supporting the femoral head to be measured.

3. The femoral head multi-dimensional mechanical property evaluation device according to claim 2, characterized in that: The bottom of the bottom plate (110) is fixedly connected with supporting legs (140) at four corners, and the horizontal line of the bottom end of the supporting leg (140) is lower than the horizontal line of the bottom of the water pipe (300).

4. The femoral head multi-dimensional mechanical property evaluation device according to claim 2, characterized in that: One end of the water pipe (300) penetrates to the top of the bearing table (130) and is matched and installed with the conical hole of the femoral head to be measured, and the other end of the water pipe (300) is in communication with an external high-pressure water pump.

5. The femoral head multi-dimensional mechanical property evaluation device of claim 1, wherein: The pressing mechanism (200) includes a pneumatic cylinder (210) fixedly connected with the bottom of the second supporting plate (430), the output end of the pneumatic cylinder (210) is fixedly connected with a mounting plate (220), the bottom of the mounting plate (220) is detachably mounted with a connecting plate (230), and the bottom of the connecting plate (230) is fixedly connected with an acetabulum body (240) matched with the femoral head to be measured.

6. The femoral head multi-dimensional mechanical property evaluation device of claim 2, wherein: The angle adjusting mechanism (500) includes fixed plates (510) fixedly connected with both sides of the top of the inner wall surface of the L-shaped supporting plate (120), the fixed plates (510) are symmetrically arranged about the motor (410), the bottom of the fixed plate (510) is fixedly connected with an arc hollow frame (520), the inner cavity of the arc hollow frame (520) is slidably penetrated with a guide column (530), and one end of the guide column (530) is fixedly connected with the motor (410).

7. The femoral head multi-dimensional mechanical property evaluation device of claim 6, wherein: The surface of the guide column (530) is provided with external threads, the surface of the guide column (530) is threadedly sleeved with a screw sleeve (540), and the screw sleeve (540) is located on the side of the arc hollow frame (520) away from the motor (410).

8. The femoral head multi-dimensional mechanical property evaluation device of claim 7, wherein: The surface of the guide column (530) is sleeved with a rubber gasket (550), and the rubber gasket (550) is located between the arc hollow frame (520) and the screw sleeve (540).

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