Medical instrument reliability testing device

Abstract

The utility model provides a reliability testing device for a medical instrument. The medical instrument reliability testing device comprises a testing box body used for providing temperature change conditions, a supporting mechanism and an industrial camera. A transparent shooting window is arranged at the top of the test box main body; the supporting mechanism comprises a supporting piece, a movable ring, a limiting piece and a movable support. The supporting piece is mounted at the top of the test box main body and positioned beside the transparent shooting window; the movable ring is arranged on the outer surface of the supporting piece in a sleeving mode, slides in the height direction of the supporting piece and rotates around the outer surface of the supporting piece. The limiting piece is arranged between the movable ring and the supporting piece; the movable support is installed on the periphery of the movable ring and used for being longitudinally bent. The industrial camera is located above the test box main body, and a lens faces the transparent shooting window; and the industrial camera is fixedly connected with the end part of the movable bracket. According to the utility model, the industrial camera is arranged outside the test box main body and is not influenced by the internal temperature of the test box main body, the working environment is stable, and various position adjustment requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of medical device testing, in particular to a medical device reliability testing device. Background Art

[0002] Medical devices are divided into Class I, Class II, and Class III according to the degree of risk. The higher the category, the higher the requirements for safety and effectiveness. In order to ensure the reliability of medical devices, reliability tests are usually carried out. Reliability tests mainly include climate environment tests, mechanical stress tests, and combined environmental and mechanical stress tests. Environmental tests are divided into low temperature, high temperature, high temperature and high humidity, alternating, rapid temperature changes, hot and cold shock, solar radiation, high temperature and high pressure, etc.

[0003] For temperature testing, a high and low temperature test box is usually used. The medical device to be tested is placed in the high and low temperature test box. Different temperature conditions are provided for testing by changing the internal temperature of the test box. However, temperature testing usually requires long-term uninterrupted testing, that is, the device is placed in the box and maintained under that condition for hundreds or even thousands of hours to observe whether the device is reliable. Although the existing test box has a window for observing the device, the test time is long and the tester cannot observe all the time. Changes that occur in the middle of the test may be missed, affecting the evaluation of the reliability of the medical device. Even if the test box has a built-in camera to take pictures, the working environment of the camera is unstable due to the temperature inside the test box, and the angle cannot be adjusted, which also affects the recording of observation data. Utility Model Content

[0004] Based on this, it is necessary to provide a medical device reliability testing device to address the problem that the existing high and low temperature test chambers cannot promptly and effectively respond to the test conditions of medical devices.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A medical device reliability testing device comprises a test box body for providing temperature change conditions, a supporting mechanism and an industrial camera.

[0007] A transparent shooting window is provided on the top of the test box body;

[0008] The support mechanism includes a support member, a movable ring, a limiter and a movable bracket; the support member is installed on the top of the test box body and is located beside the transparent shooting window; the movable ring is sleeved on the outer surface of the support member, slides along the height direction of the support member, and rotates around the outer surface of the support member; the limiter is arranged between the movable ring and the support member to limit the relative position relationship between the movable ring and the support member; the movable bracket is installed on the outer periphery of the movable ring to bend longitudinally;

[0009] The industrial camera is located above the test box body, and the lens faces the transparent shooting window; the industrial camera is fixedly connected to the end of the movable bracket to achieve adjustment of the distance and angle between the industrial camera and the test box body.

[0010] Furthermore, the support member includes an internal threaded sleeve, a longitudinal rod and a limit block; the internal threaded sleeve is fixedly connected to the top of the test box body, the bottom end of the longitudinal rod is threadedly connected to the internal threaded sleeve, the movable ring is located on the outer surface of the longitudinal rod, and the limit block is clamped on the top of the longitudinal rod to limit the movable ring.

[0011] Furthermore, the movable ring includes an inner ring and an outer ring; the inner ring is sleeved on the outer surface of the longitudinal rod, the outer ring is sleeved on the outer surface of the inner ring, and the outer ring is slidably arranged around the outer circumference of the inner ring.

[0012] Furthermore, a sliding protrusion is provided on the inner side of the outer ring, and an arc-shaped groove is provided on the outer circumference of the inner ring. The arc length of the arc-shaped groove is adapted to the size of the transparent shooting window, and the sliding protrusion of the outer ring is located in the arc-shaped groove of the inner ring.

[0013] Furthermore, the limiting member includes an elastic block and a limiting bolt; a cavity is opened radially outward on the inner wall of the inner ring, the elastic block is arranged in the cavity, and moves linearly along the radial direction of the inner ring, and the end of the elastic block is matched with the outer periphery of the longitudinal rod to limit the relative position relationship between the two; the limiting bolt is transversely threadedly connected to the outer periphery of the outer ring, and the threaded end of the limiting bolt is in contact with the outer periphery of the inner ring.

[0014] Furthermore, a tooth groove is provided in the axial direction on the outer periphery of the longitudinal rod, and the elastic block includes an L-shaped rod, a tooth block and a spring; an opening is provided at the top of the cavity, one longitudinal end of the L-shaped rod is located in the cavity and is connected to the tooth block, a pattern meshing with the tooth groove is provided on the side of the tooth block facing the longitudinal rod, and the spring is provided between the L-shaped rod and the inner wall of the cavity to push the L-shaped rod to move in the direction of the tooth groove.

[0015] Furthermore, the bottom end of the tooth groove of the longitudinal rod is located above the internal threaded sleeve.

[0016] Furthermore, the outer periphery of the longitudinal rod is provided with equidistant and linearly distributed positioning holes along the axial direction; and one end of the elastic block facing the longitudinal rod is provided with a positioning protrusion adapted to the positioning hole.

[0017] Furthermore, the limiting member includes a locking bolt and a limiting bolt; the outer periphery of the inner ring is threadedly connected with the locking bolt, and the threaded end of the locking bolt contacts the longitudinal rod; the limiting bolt is transversely threadedly connected to the outer periphery of the outer ring, and the threaded end of the limiting bolt contacts the outer periphery of the inner ring.

[0018] Furthermore, the movable bracket includes a first bracket and a second bracket; one end where the first bracket and the second bracket intersect is connected through a damping shaft, the other end of the first bracket is fixed to the outer ring, and the other end of the second bracket is connected to the industrial camera.

[0019] Compared with the prior art, the beneficial effects of the utility model include:

[0020] 1. The utility model places the industrial camera outside the test box body, which is not affected by the temperature inside the test box body, and the working environment is stable. The industrial camera is placed on the top of the test box body, which is not easily touched, and the shooting angle is stable, which reduces the influence of external factors and does not affect the normal operation of the test box body.

[0021] 2. The utility model can adjust the height and angle of the industrial camera through the support mechanism, and then can make corresponding position adjustments according to the changes in the types of medical devices, meet actual shooting needs, and obtain test images at the required angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0023] Figure 1 This is a three-dimensional diagram of a medical device reliability testing device introduced in Example 1 of the utility model;

[0024] Figure 2 Based on Figure 1 A front view of a medical device reliability test device;

[0025] Figure 3 Based on Figure 1 A three-dimensional diagram of the supporting mechanism;

[0026] Figure 4 Based on Figure 3 A front view of a supporting mechanism;

[0027] Figure 5 Based on Figure 4 A partial enlarged view of

[0028] Figure 6 This is a schematic diagram of the structure of the limiting component introduced in Example 3.

[0029] Explanations in the figure: 1. Test box body; 11. Transparent shooting window; 2. Support mechanism; 21. Support member; 211. Internally threaded sleeve; 212. Longitudinal rod; 213. Limit block; 22. Movable ring; 221. Inner ring; 222. Outer ring; 223. Sliding protrusion; 23. Limit member; 231. Elastic block; 2311. L-shaped rod; 2312. Tooth block; 2313. Spring; 232. Limit bolt; 233. Locking bolt; 24. Movable bracket; 241. First bracket; 242. Second bracket; 3. Industrial camera. DETAILED DESCRIPTION

[0030] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0031] Example 1

[0032] See also Figure 1-2 This embodiment introduces a medical device reliability testing device, including a test box body 1 for providing temperature change conditions, a supporting mechanism 2 and an industrial camera 3.

[0033] The test box body 1 is mainly composed of a box body, a measurement and control system, a heating system, and a cooling system. The measurement and control system uses a controller and a display. The heating system uses an electric heater as the main heating element, and the temperature inside the box is increased by controlling the heating power of the electric heater. A hot air circulation system can also be used to ensure that the temperature inside the box is evenly distributed. The cooling system uses a compressor and a refrigerant to reduce the temperature inside the box through a refrigeration cycle. Since the test box body 1 basically adopts the existing structure, it will not be described in detail here.

[0034] A transparent shooting window 11 is provided on the top of the test box body 1, and the transparent shooting window 11 is located directly above the medical device placed inside the test box body 1. Therefore, the situation inside the test box body 1 can be photographed through the transparent shooting window 11. The support mechanism 2 is placed on the top of the test box body 1 and beside the transparent shooting window 11, and is used to support the industrial camera 3, so that the industrial camera 3 can be suspended directly above the transparent shooting window 11.

[0035] like Figure 3-4 As shown, the support mechanism 2 is mainly composed of a support member 21, a movable ring 22, a limit member 23 and a movable bracket 24. The support member 21 includes an internal threaded sleeve 211, a longitudinal rod 212 and a limit block 213. A hole for installing the internal threaded sleeve 211 is provided at the top of the test box body 1, and the bottom end of the internal threaded sleeve 211 is welded and fixed to the top of the test box body 1. The bottom end of the longitudinal rod 212 is provided with an external thread, and the bottom end of the longitudinal rod 212 is threadedly connected to the internal threaded sleeve 211. The top end of the longitudinal rod 212 is clamped with a limit block 213 to close the top of the longitudinal rod 212 to prevent the movable ring 22 from sliding out from the top of the longitudinal rod 212 when sliding on the surface of the longitudinal rod 212.

[0036] like Figure 5As shown, the movable ring 22 is placed on the outer surface of the longitudinal rod 212, and the movable ring 22 includes an inner ring 221 and an outer ring 222. The inner ring 221 and the outer ring 222 are slidably connected, and the outer diameter of the inner ring is adapted to the inner diameter of the outer ring 222. A sliding protrusion 223 can be provided on the inner wall of the outer ring 222, and an arc groove adapted to the sliding protrusion 223 is provided on the outer wall of the inner ring 221. The sliding protrusion 223 is located in the arc groove, and relative sliding between the inner ring 221 and the outer ring 222 can be achieved. Since the outer ring 222 is connected to the movable bracket 24, the rotation range of the outer ring 222 limits the horizontal rotation range of the movable bracket, so the arc length of the arc groove is at least adapted to the transparent shooting window 11 of the test box body 1, so that the end of the movable bracket 24 can be rotated above the transparent shooting window 11.

[0037] The inner wall of the inner ring 221 is in contact with the outer wall of the longitudinal rod 212, and the inner ring 221 can slide on the surface of the longitudinal rod 212 along the axial direction of the longitudinal rod 212. In order to limit the relative position relationship between the inner ring 221 and the longitudinal rod 212 and the relative position relationship between the inner ring 221 and the outer ring 222, a stopper 23 is provided on the inner ring 221 and the outer ring 222.

[0038] like Figure 5 As shown, the limiting member 23 includes an elastic block 231 and a limiting bolt 232. The outer ring 222 is transversely threaded with the limiting bolt 232, and the threaded end of the limiting bolt 232 is in contact with the outer periphery of the inner ring 221. Tightening the limiting bolt 232 can relatively fix the rotation of the outer ring 222 on the outer periphery of the inner ring 221. The inner wall of the inner ring 221 is provided with a cavity radially outward, and the elastic block 231 is arranged in the cavity and moves linearly along the radial direction of the inner ring 221. The end of the elastic block 231 is matched with the outer periphery of the longitudinal rod 212 in a concave-convex manner to limit the relative position relationship between the two. When the end of the elastic block 231 is tightly fitted with the outer wall of the longitudinal rod 212 due to the concave-convex match, the relative position of the entire movable ring 22 and the longitudinal rod 212 is fixed, and the movable ring 22 is not easy to slide longitudinally on the outer surface of the longitudinal rod 212. In order to prevent the limiting bolt 232 from affecting the sliding of the outer ring 222 on the inner ring 221 , the limiting bolt 232 and the arc-shaped groove are staggered.

[0039] The elastic block 231 in this embodiment includes an L-shaped rod 2311, a tooth block 2312 and a spring 2313. The top of the cavity of the inner ring 221 is open, one longitudinal end of the L-shaped rod 2311 is located in the cavity and connected to the tooth block 2312, and a spring 2313 is arranged between the side of the L-shaped rod 2311 away from the tooth block 2312 and the inner wall of the cavity, pushing the entire L-shaped rod 2311 to move toward the longitudinal rod 212. The outer periphery of the longitudinal rod 212 is provided with a tooth groove along the axial direction, and the tooth groove is meshed with the tooth groove of the tooth block 2312. When the tooth block is located in the tooth groove, the two mesh to achieve the purpose of limiting the movable ring 22 on the surface of the longitudinal rod 212. It should be emphasized that in order to prevent the tooth groove from affecting the outer surface of the bottom end of the longitudinal rod 212, the bottom end of the tooth groove of the longitudinal rod 212 is above the external threaded portion of the longitudinal rod 212. When the longitudinal rod 212 is connected to the internal threaded sleeve 211, the bottom end of the tooth groove of the longitudinal rod 212 is located above the internal threaded sleeve 211.

[0040] like Figure 4 As shown, the movable bracket 24 includes a first bracket 241 and a second bracket 242; one end of the first bracket 241 and the second bracket 242 are connected by a damping shaft, the other end of the first bracket 241 is fixed to the outer ring 222, and the other end of the second bracket 242 is connected to the industrial camera 3. The first bracket 241 and the second bracket 242 can realize longitudinal rotation, so as to meet the longitudinal angle adjustment of the industrial camera.

[0041] In the initial state, the industrial camera 3 is located directly above the transparent shooting window 11 of the test box body 1. If the height of the industrial camera 3 needs to be adjusted, the L-shaped rod 2311 can be pulled outward to disengage the tooth block 2312 from the tooth groove. At this time, the movable ring 22 can slide on the longitudinal rod 212, thereby driving the industrial camera 3 to adjust its height through the movable bracket 24. After adjusting to a suitable height, the L-shaped rod 2311 can be loosened, and the tooth block 2312 re-enters the tooth groove to fix the movable ring 22 on the longitudinal rod 212. If the industrial camera 3 needs to be adjusted in angle, the relative angle between the first bracket 241 and the second bracket 242 can be adjusted. If the horizontal position of the industrial camera 3 above the transparent shooting window 11 needs to be adjusted, the limit bolt 232 can be loosened to adjust the relative position relationship between the outer ring 222 and the inner ring 221.

[0042] In this embodiment, the industrial camera 3 is placed outside the test box body 1 so that it is not affected by the internal temperature of the test box body 1 and the working environment is stable. The industrial camera 3 is placed on the top of the test box body 1 so that it is not easily touched and the shooting angle is stable, which reduces the impact of external factors and does not affect the normal operation of the test box body 1.

[0043] Example 2

[0044] This embodiment introduces a medical device reliability test device, which is basically the same in structure as the medical device reliability test device introduced in Embodiment 1. The difference is that the elastic block 231 and the longitudinal rod 212 of this embodiment are matched with each other through positioning protrusions and positioning holes. The outer periphery of the longitudinal rod 212 is provided with positioning holes that are equidistantly distributed linearly along the axial direction; the end of the elastic block 231 facing the longitudinal rod 212 is provided with a positioning protrusion (not shown in the figure) that is adapted to the positioning hole. When the positioning protrusion of the elastic block 231 is located in the positioning hole, the movable ring 22 cannot slide longitudinally on the surface of the longitudinal rod 212.

[0045] This embodiment has the same beneficial effects as embodiment 1.

[0046] Example 3

[0047] like Figure 6 As shown, this embodiment introduces a medical device reliability test device, which has basically the same structure as the medical device reliability test device introduced in Example 1. The difference is that the limiter 23 of this embodiment adopts a locking bolt 233 and a limiting bolt 232. The outer periphery of the inner ring 221 is threadedly connected with a locking bolt 233, and the threaded end of the locking bolt 233 is in contact with the longitudinal rod 212; the limiting bolt 232 is transversely threadedly connected to the outer periphery of the outer ring 222, and the threaded end of the limiting bolt 232 is in contact with the outer periphery of the inner ring 221. The inner ring 221 is limited on the longitudinal rod 212 by the locking bolt 233, and the outer ring 222 is limited on the inner ring 221 by the limiting bolt 232.

[0048] This embodiment has the same beneficial effects as Embodiment 1.

[0049] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A medical device reliability testing device, which is used to perform environmental testing on medical devices, characterized in that: It includes: A test box body (1) for providing temperature change conditions, with a transparent shooting window (11) provided on the top; A support mechanism (2) comprises a support member (21), a movable ring (22), a limiting member (23) and a movable bracket (24); the support member (21) is mounted on the top of the test box body (1) and is located beside the transparent shooting window (11); the movable ring (22) is sleeved on the outer surface of the support member (21), slides along the height direction of the support member (21), and rotates around the outer surface of the support member (21); the limiting member (23) is arranged between the movable ring (22) and the support member (21) to limit the relative position relationship between the movable ring (22) and the support member (21); the movable bracket (24) is installed on the outer peripheral surface of the movable ring (22) to achieve longitudinal bending; An industrial camera (3) is located above the test box body (1), with its lens facing the transparent shooting window (11); the industrial camera (3) is fixedly connected to the end of the movable bracket (24) to achieve adjustment of the distance and angle between the industrial camera (3) and the test box body (1).

2. The medical device reliability testing device according to claim 1, characterized in that: The support member (21) comprises an internal thread sleeve (211), a longitudinal rod (212) and a limiting block (213); the internal thread sleeve (211) is fixedly connected to the top of the test box body (1); the bottom end of the longitudinal rod (212) is threadedly connected to the internal thread sleeve (211); the movable ring (22) is located on the outer surface of the longitudinal rod (212); and the limiting block (213) is clamped on the top of the longitudinal rod (212) to limit the movable ring (22).

3. The medical device reliability testing device according to claim 2, characterized in that: The movable ring (22) comprises an inner ring (221) and an outer ring (222); the inner ring (221) is sleeved on the outer surface of the longitudinal rod (212), the outer ring (222) is sleeved on the outer surface of the inner ring (221), and the outer ring (222) is slidably arranged around the outer circumference of the inner ring (221).

4. The medical device reliability testing device according to claim 3, characterized in that: A sliding protrusion (223) is arranged on the inner side of the outer ring (222), and an arc-shaped groove is arranged on the outer peripheral surface of the inner ring (221). The arc length of the arc-shaped groove is adapted to the size of the transparent shooting window (11), and the sliding protrusion (223) of the outer ring (222) is located in the arc-shaped groove of the inner ring (221).

5. The medical device reliability testing device according to claim 3, characterized in that: The limiting member (23) comprises an elastic block (231) and a limiting bolt (232); a cavity is opened radially outward on the inner wall of the inner ring (221); the elastic block (231) is arranged in the cavity and moves linearly along the radial direction of the inner ring (221); the end of the elastic block (231) is matched with the outer periphery of the longitudinal rod (212) in a concave-convex manner to limit the relative positional relationship between the two; the limiting bolt (232) is transversely threadedly connected to the outer periphery of the outer ring (222); the threaded end of the limiting bolt (232) contacts the outer periphery of the inner ring (221).

6. The medical device reliability testing device according to claim 5, characterized in that: The outer peripheral surface of the longitudinal rod (212) is provided with a tooth groove along the axial direction, and the elastic block (231) comprises an L-shaped rod (2311), a tooth block (2312) and a spring (2313); the top of the cavity is opened, one longitudinal end of the L-shaped rod (2311) is located in the cavity and connected to the tooth block (2312), and a pattern meshing with the tooth groove is provided on the side of the tooth block (2312) facing the longitudinal rod (212), and the spring (2313) is arranged between the L-shaped rod (2311) and the inner wall of the cavity, so as to push the L-shaped rod (2311) to move in the direction of the tooth groove.

7. The medical device reliability testing device according to claim 6, characterized in that: The bottom end of the tooth groove of the longitudinal rod (212) is located above the internal thread sleeve (211).

8. The medical device reliability testing device according to claim 5, characterized in that: The outer periphery of the longitudinal rod (212) is provided with equidistant and linearly distributed positioning holes along the axial direction; and one end of the elastic block (231) facing the longitudinal rod (212) is provided with a positioning protrusion adapted to the positioning hole.

9. The medical device reliability testing device according to claim 3, characterized in that: The limiting member (23) comprises a locking bolt (233) and a limiting bolt (232); the outer peripheral surface of the inner ring (221) is threadedly connected with the locking bolt (233), and the threaded end of the locking bolt (233) contacts the longitudinal rod (212); the limiting bolt (232) is transversely threadedly connected to the outer peripheral surface of the outer ring (222), and the threaded end of the limiting bolt (232) contacts the outer peripheral surface of the inner ring (221).

10. The medical device reliability testing device according to claim 3, characterized in that: The movable bracket (24) comprises a first bracket (241) and a second bracket (242); one end where the first bracket (241) and the second bracket (242) meet is connected via a damping shaft, the other end of the first bracket (241) is fixedly connected to the outer ring (222), and the other end of the second bracket (242) is connected to the industrial camera (3).

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