Peritoneal dialysis external short tube fatigue test equipment

Abstract

The invention particularly relates to peritoneal dialysis external short tube fatigue test equipment which comprises a rack electric box, a fatigue test mechanism is installed on a top plate of the top of the rack electric box and comprises two end fixing mechanisms and a middle fixing mechanism, and the two end fixing mechanisms are symmetrically arranged on the two sides of the middle fixing mechanism; the end portions of the two opposite ends of the two-end fixing mechanism are fixedly connected with rotating mechanisms. A strip-shaped hole is formed in the cavity of the rotating shaft, and the distance can be automatically adjusted when the rotating shaft rotates along with the strip-shaped hole.

Description

Technical Field

[0001] This invention relates to the field of fatigue testing of dialysis external tubing, and specifically to a fatigue testing device for peritoneal dialysis external tubing. Background Technology

[0002] like Figure 6 The peritoneal dialysis external catheter shown typically consists of a catheter connector 30, a dialysate connection tube 31, and a connecting catheter 32. The end caps of the catheter connector 30 are threaded connections. Both the dialysate connection tube 31 and the connecting catheter 32 are flexible tubing. The dialysate connection tube 31 connects to the dialysate, and the connecting catheter connects to the patient. The catheter connector connects the catheter and the dialysate connection tube and typically employs a reliable connection method to ensure no dialysate leakage. Therefore, peritoneal dialysis external catheters require fatigue resistance testing to provide an extra layer of assurance for clinical use. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a fatigue testing device for peritoneal dialysis external tubing.

[0004] The technical solution of the present invention is implemented as follows: a fatigue testing device for peritoneal dialysis external short tubes includes a frame electrical box, a fatigue testing mechanism is installed on the top plate of the frame electrical box, the fatigue testing mechanism includes a two-end fixing mechanism and a middle fixing mechanism, the two-end fixing mechanisms are symmetrically arranged on both sides of the middle fixing mechanism, and the ends of the opposite ends of the two-end fixing mechanisms are fixedly connected to a rotating mechanism.

[0005] The intermediate fixing mechanism includes a pressing cylinder fixing plate located at the top, fixing columns fixedly connected to both sides of the bottom of the pressing cylinder fixing plate, several vertically arranged pressing cylinders fixedly connected to the bottom of the pressing cylinder fixing plate, and a pressing seat fixed to the bottom of the free end of the pressing cylinder.

[0006] Each pressure seat has a placement seat underneath it, which is fixedly connected to the top of the rack electrical box.

[0007] The rotating mechanism includes a motor, which is fixed to the side of the first fixed plate. The motor's drive shaft is connected to a rotating shaft via a coupling. The rotating shaft passes through and is fixedly connected to the second fixed plate. The other end of the rotating shaft is a cavity structure. A fixed shaft is fixed inside the cavity of the rotating shaft. The other end of the fixed shaft is connected to the two-end fixing mechanisms.

[0008] The rotating shaft has symmetrical slotted holes, and the fixed shaft is connected to the rotating shaft by a pin.

[0009] The two-end fixing mechanism includes an upper mounting base and a lower mounting base, which are fixedly connected to the ends of the fixed shaft. The mounting base has a 7-shaped structure. A clamping cylinder is fixedly connected to the bottom of the horizontal part of the mounting base. A pressing block is fixedly connected to the bottom of the free end of the clamping cylinder. An adjusting seat is fixedly connected to the top of the horizontal plate of the lower mounting base. The adjusting seat has a U-shaped structure. A lifting seat is provided in the groove of the adjusting seat. A placement block is fixedly connected to the top of the lifting seat. The lifting seat is connected to the adjusting seat by bolts.

[0010] Fixed plate one and fixed plate two are fixedly connected to the top of the movable base. The movable base is slidably set on the top of the slider of the linear motor module. A flexible hose fixing device is provided on the top of the movable base.

[0011] The hose fixing device includes two columns. An upper fixing plate and a lower fixing plate are fixedly connected to the lower part of the top of the columns. A hose fixing cylinder is fixedly connected to the upper fixing plate. A hose upper pressure plate is fixedly connected to the bottom of the free end of the hose fixing cylinder. A hose placement seat for placing the hose is fixedly connected to the top of the lower fixing plate.

[0012] Leak detection devices are installed on the sides of the hose placement seats on both sides. The side leakage devices include an inflation structure, a sealing structure, and an airtightness tester. The sealing structure includes two spaced-apart sealing columns, which are vertically fixed to the top of the rack electrical box. A placement plate is fixedly connected to the top of the sealing column, and a sealing seat is fixedly connected to the top of the placement plate. A rubber plug is fixedly connected to the side of the sealing seat. The inflation structure includes two spaced-apart columns, with a placement plate fixedly connected to the top of the columns. An air pump is installed on the top of the placement plate, and one end of the air pump 23 is connected to multiple inflation tubes.

[0013] The top of the rack electrical box is equipped with a protective cover, and the control cabinet is mounted on the protective cover.

[0014] The beneficial effects of this invention are as follows: This invention provides a middle fixing mechanism and two end fixing mechanisms to fix the middle and two ends of the conduit connector respectively. Then, the two ends are rotated by a motor to perform fatigue testing. Since the two ends of the conduit connector are threaded, the fixing shaft is inserted into the cavity of the rotating shaft and connected by a pin. The cavity of the rotating shaft has a strip hole, which can automatically adjust the distance as it rotates. The lifting seat can be vertically adjusted in the adjusting seat, so as to adapt to different products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the fatigue testing mechanism.

[0017] Figure 3 This is a schematic diagram of the fatigue testing mechanism.

[0018] Figure 4 This is a schematic diagram of the structure of the fixing device at both ends.

[0019] Figure 5 This is a schematic diagram of the rotating shaft.

[0020] Figure 6 This is a schematic diagram of the external short tube for peritoneal dialysis.

[0021] Reference numerals: 1. Frame electrical box; 2. Downward pressure cylinder fixing plate; 3. Downward pressure cylinder; 4. Downward pressure seat; 5. Placement seat; 8. Motor; 9. Fixing plate one; 10. Rotating shaft; 11. Fixing plate two; 14. Upper mounting seat; 15. Clamping cylinder; 16. Moving base; 17. Linear motor module; 18. Column; 19. Fixing plate; 20. Lower fixing plate; 21. Hose fixing cylinder; 22. Hose upper pressure plate; 23. Air pump; 25. Sealing seat; 26. Rubber plug; 27. Protective cover; 28. Hose placement seat; 29. ​​Flow stop clamp; 30. Conduit connector; 31. Dialysis fluid connection tube; 32. Connecting conduit; 33. Lower mounting seat; 34. Adjustment seat; 35. Lifting seat; 36. Placement block; 37. Strip hole; 38. Air tightness tester. Detailed Implementation

[0022] like Figure 1-6 As shown, a peritoneal dialysis external short tube fatigue testing device includes a frame electrical box 1. A fatigue testing mechanism is installed on the top of the frame electrical box 1. The fatigue testing mechanism includes a two-end fixing mechanism and a middle fixing mechanism. The two-end fixing mechanisms are symmetrically arranged on both sides of the middle fixing mechanism. A rotating mechanism is fixedly connected to the ends of the opposite ends of the two-end fixing mechanisms.

[0023] Specifically, such as Figure 1 and 6 As shown, the middle part of the conduit connector 30 is fixed by the middle fixing mechanism, and the end caps at both ends are fixed by the end fixing mechanisms. Then, the rotating mechanism is started to drive the two ends to rotate for fatigue testing.

[0024] Furthermore, the intermediate fixing mechanism includes a pressing cylinder fixing plate 2 located at the top, fixing columns are fixedly connected to both sides of the bottom of the pressing cylinder fixing plate 2, and several vertically arranged pressing cylinders 3 are fixedly connected to the bottom of the pressing cylinder fixing plate 2. A pressing seat 4 is fixedly attached to the bottom of the free end of the pressing cylinder 3, and a placement seat 5 is provided below each pressing seat 4. The placement seat 5 is fixedly connected to the top of the frame electrical box 1.

[0025] Specifically, both the placement seat 5 and the pressing seat 4 are provided with placement grooves. The middle part of the conduit connector 30 is placed in the placement groove of the placement seat 5, and the free end of the pressing cylinder 3 moves downward so that the pressing seat 4 presses down on the middle part of the conduit connector 30.

[0026] Furthermore, the rotating mechanism includes a motor 8, which is fixed to the side of the fixed plate 9. The motor 8 has a rotating shaft 10 connected to its drive shaft via a coupling. The rotating shaft 10 passes through the fixed plate 11 and is fixedly connected to it. The other end of the rotating shaft 10 is a cavity structure. A fixed shaft 12 is fixed inside the cavity of the rotating shaft 10. The other end of the fixed shaft 12 is connected to the two-end fixing mechanism.

[0027] Specifically, the motor 8 starts and drives the rotating shaft 10 and the fixed shaft 12 to rotate, which in turn drives the fixed mechanism to rotate.

[0028] Furthermore, the rotating shaft 10 has symmetrically provided strip-shaped holes 37, and the fixed shaft 12 is connected to the rotating shaft 10 by a pin.

[0029] Specifically, since the end caps of the conduit connector 30 are threaded, the motor 8 rotates in both directions during testing. This rotation will generate a displacement difference, and the fixed shaft 12 can move within the cavity of the rotating shaft 10 to automatically compensate for the displacement. The rotation of the motor 8 drives the rotating shaft 10 and the fixed shaft to rotate, which in turn drives the fixed mechanisms at both ends to rotate, thereby conducting fatigue testing.

[0030] Furthermore, the two-end fixing mechanism includes an upper mounting base 14 and a lower mounting base 33, which are fixedly connected to the ends of the fixed shaft 12. The upper mounting base 14 has a 7-shaped structure. A clamping cylinder 15 is fixedly connected to the bottom of the horizontal part of the upper mounting base 14. A lower pressing block is fixedly connected to the bottom of the free end of the clamping cylinder 15. An adjusting seat 34 is fixedly connected to the top of the horizontal plate of the lower mounting base 33. The adjusting seat 34 has a U-shaped structure. A lifting seat 35 is provided in the groove of the adjusting seat 34. A placement block 36 is fixedly connected to the top of the lifting seat 35. The lifting seat 35 is connected to the adjusting seat 34 by bolts.

[0031] Specifically, the end caps of the conduit connector 30 are located on the top of the placement blocks 36 on the two end fixing mechanisms. The free end of the pressing cylinder 15 moves downward, causing the lower pressing block to move downward. The lower pressing block will press down on the two ends of the conduit connector 30. The lifting seat 35 has a T-shaped structure. The vertical part of the lifting seat 35 can move vertically in the groove of the adjusting seat 34 and then be fixed with bolts. This allows the height of the placement block 36 to be adjusted, thus adapting to different products and ensuring that different products are at the center of rotation.

[0032] Furthermore, fixing plate 19 and fixing plate 21 are fixedly connected to the top of the movable base 16. The movable base 16 is slidably disposed on the top of the slider of the linear motor module 17. A hose fixing device is provided on the top of the movable base 16.

[0033] Specifically, the linear motor module 17 drives the movable base 16 to move linearly, thereby driving the two end fixing mechanisms to move horizontally, thus adapting to end caps of different lengths.

[0034] Furthermore, the hose fixing device includes two columns 18. An upper fixing plate 19 and a lower fixing plate 20 are fixedly connected to the lower part of the top of the columns 18. A hose fixing cylinder 21 is fixedly connected to the upper fixing plate 19. A hose upper pressure plate 22 is fixedly connected to the bottom of the free end of the hose fixing cylinder 21. A hose placement seat 28 for placing the hose is fixedly connected to the top of the lower fixing plate 20.

[0035] Specifically, the top of the tubing placement seat 28 and the bottom of the tubing pressure plate 22 are provided with several corresponding placement slots. During testing, the dialysate connecting tube 31 and connecting conduit 32 are respectively passed through the holes on the adjacent upper mounting seat 14 and placed in the placement slots at the top of the tubing placement seat 28. The tubing fixing cylinder 21 is activated to drive the tubing pressure plate 22 to move downward and press the tubing down, but it does not need to be pressed very tightly.

[0036] Furthermore, a leak detection device is provided on the side of the hose placement seat 28 on both sides. The side leak device includes an inflation structure, a sealing structure and an airtightness tester 38. The sealing structure includes two spaced columns, which are vertically fixed to the top of the frame electrical box 1. A placement plate is fixedly connected to the top of the sealing column, and a sealing seat 25 is fixedly connected to the top of the placement plate. A rubber plug 26 is fixedly connected to the side of the sealing seat 25.

[0037] Specifically, the inflation structure includes two spaced columns, with a placement plate fixedly connected to the top of each column. An inflation pump 23 is installed on the top of the placement plate, and one end of the inflation pump 23 is connected to multiple inflation tubes. After the rotation test is completed, the end of each dialysate connecting tube 31 is connected to the corresponding rubber stopper 26, and the end of each connecting conduit 32 is connected to the inflation tube for inflation. The air tightness is then tested using an air tightness tester 38, which is an SFS multi-channel air tightness tester.

[0038] A protective cover 27 is installed on the top of the rack electrical box 1, and a control cabinet is installed on the protective cover 27.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A fatigue testing device for peritoneal dialysis external tubing, comprising a frame electrical box, wherein a fatigue testing mechanism is mounted on the top plate of the frame electrical box, characterized in that: The fatigue testing mechanism includes a two-end fixing mechanism and a middle fixing mechanism. The two-end fixing mechanisms are symmetrically arranged on both sides of the middle fixing mechanism, and the ends of the opposite ends of the two-end fixing mechanisms are fixedly connected to a rotating mechanism.

2. The peritoneal dialysis external tubing fatigue testing device according to claim 1, characterized in that: The intermediate fixing mechanism includes a pressing cylinder fixing plate located at the top, fixing columns fixedly connected to both sides of the bottom of the pressing cylinder fixing plate, several vertically arranged pressing cylinders fixedly connected to the bottom of the pressing cylinder fixing plate, and a pressing seat fixed to the bottom of the free end of the pressing cylinder.

3. The peritoneal dialysis external tubing fatigue testing device according to claim 1, characterized in that: Each pressure seat has a placement seat underneath it, which is fixedly connected to the top of the rack electrical box.

4. The peritoneal dialysis external tubing fatigue testing device according to claim 3, characterized in that: The rotating mechanism includes a motor, which is fixed to the side of the first fixed plate. The motor's drive shaft is connected to a rotating shaft via a coupling. The rotating shaft passes through and is fixedly connected to the second fixed plate. The other end of the rotating shaft is a cavity structure. A fixed shaft is fixed inside the cavity of the rotating shaft. The other end of the fixed shaft is connected to the two-end fixing mechanisms.

5. The peritoneal dialysis external tubing fatigue testing device according to claim 4, characterized in that: The rotating shaft has symmetrical slotted holes, and the fixed shaft is connected to the rotating shaft by a pin.

6. The peritoneal dialysis external tubing fatigue testing device according to claim 1, characterized in that: The two-end fixing mechanism includes an upper mounting base and a lower mounting base, which are fixedly connected to the ends of the fixed shaft. The mounting base has a 7-shaped structure. A clamping cylinder is fixedly connected to the bottom of the horizontal part of the mounting base. A pressing block is fixedly connected to the bottom of the free end of the clamping cylinder. An adjusting seat is fixedly connected to the top of the horizontal plate of the lower mounting base. The adjusting seat has a U-shaped structure. A lifting seat is provided in the groove of the adjusting seat. A placement block is fixedly connected to the top of the lifting seat. The lifting seat is connected to the adjusting seat by bolts.

7. The peritoneal dialysis external tubing fatigue testing device according to claim 4, characterized in that: Fixed plate one and fixed plate two are fixedly connected to the top of the movable base. The movable base is slidably set on the top of the slider of the linear motor module. A flexible hose fixing device is provided on the top of the movable base.

8. The peritoneal dialysis external tubing fatigue testing device according to claim 7, characterized in that: The hose fixing device includes two columns. An upper fixing plate and a lower fixing plate are fixedly connected to the lower part of the top of the columns. A hose fixing cylinder is fixedly connected to the upper fixing plate. A hose upper pressure plate is fixedly connected to the bottom of the free end of the hose fixing cylinder. A hose placement seat for placing the hose is fixedly connected to the top of the lower fixing plate.

9. The peritoneal dialysis external tubing fatigue testing device according to claim 8, characterized in that: Leak detection devices are installed on the sides of the hose placement seats on both sides. The side leakage devices include an inflation structure, a sealing structure, and an airtightness tester. The sealing structure includes two spaced-apart sealing columns, which are vertically fixed to the top of the rack electrical box. A placement plate is fixedly connected to the top of the sealing column, and a sealing seat is fixedly connected to the top of the placement plate. A rubber plug is fixedly connected to the side of the sealing seat. The inflation structure includes two spaced-apart columns, with a placement plate fixedly connected to the top of the columns. An air pump is installed on the top of the placement plate, and one end of the air pump 23 is connected to multiple inflation tubes.

10. The peritoneal dialysis external tubing fatigue testing device according to claim 1, characterized in that: The top of the rack electrical box is equipped with a protective cover, and the control cabinet is mounted on the protective cover.

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