Injector self-destruction characteristic testing device

Abstract

The invention discloses an injector self-destruction characteristic testing device which comprises an injector and a case, the injector comprises an outer sleeve and a core rod, one end of the core rod is located in the outer sleeve, the other end of the core rod is located outside the top of the outer sleeve, a clamp and an operation screen are arranged outside one side of the case, and the clamp comprises an upper clamp and a lower clamp. The end, located outside the outer sleeve, of the core rod is detachably connected with the bottom of an upper clamp, the top of the upper clamp is detachably connected with a pressure sensor, the upper clamp is connected with the machine box in an up-down sliding mode through the pressure sensor, the outer sleeve is detachably connected with a lower clamp, and the other side of the machine box is externally connected with a pressure adjusting valve. An air inlet pipe and an air outlet pipe are arranged on the pressure regulating valve, the pressure regulating valve is detachably connected with the bottom of the outer sleeve through the air outlet pipe, an electric control board is detachably connected into the machine box, and the pressure sensor, the pressure regulating valve and the operation screen are all electrically connected with the electric control board. The beneficial effects of the invention are that the purposes of reducing cost and being convenient to operate are achieved, and the detection efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field related to a syringe self-destruction characteristic testing device, in particular to a syringe self-destruction characteristic testing device. Background Art

[0002] Syringes are a basic medical device. In order to reduce the spread of blood-borne diseases among patients, countries around the world, including my country, have enacted laws to enforce the use of disposable syringes. However, currently common disposable syringes generally have defects such as being reusable and having no safety devices, and the needle tube is exposed after injection. On the one hand, they are easily exploited by criminals or drug addicts to reuse disposable syringes, which can easily cause the spread of viruses and cross-infection. In order to prevent disposable syringes from being purchased, sold, and reused, and to avoid needles from stabbing medical staff during the collection and processing process, causing medical staff infection, countries around the world are studying and promoting the use of self-destructive safety syringes. Currently known self-destructive safety syringes are mainly divided into syringes with a core rod self-destruct structure, syringes with a needle tube self-destruct structure, and syringes with a piston self-destruct structure.

[0003] In order to prevent the reuse of syringes, it is often necessary to test the reuse prevention characteristics of syringes. During the test, in order to prove that the syringe with the reuse prevention characteristic (RUP) cannot be used again after failure, it is usually necessary to use a mechanical generating device and a pressure generating device to remove the core rod from the outer sleeve, which are used to implement pull-out test and push-back test respectively, and record the pulling force and pressure value required to remove the core rod. In the prior art, the mechanical generating device and the pressure generating device need to be tested through different platforms, which has high manufacturing cost and inconvenient operation, which is not conducive to improving the detection efficiency. Summary of the invention

[0004] The invention aims to overcome the shortcomings of the prior art in which the manufacturing cost of the syringe anti-reuse characteristic test is high and the operation is inconvenient, and provides a syringe self-destruct characteristic test device which is conducive to reducing the cost and is convenient to operate.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A syringe self-destruct characteristic testing device comprises a syringe and a case, wherein the syringe comprises a jacket and a core rod, one end of the core rod is located in the jacket and is sealed and slidably connected to the jacket, the other end of the core rod is located outside the top of the jacket, a fixture and an operation screen are arranged outside one side of the case, the fixture is located on the side of the operation screen, the fixture comprises an upper fixture and a lower fixture which are distributed up and down, one end of the core rod located outside the top of the jacket is detachably connected to the bottom of the upper fixture, the top of the upper fixture is detachably connected to a pressure sensor, the upper fixture is suspended outside the case through the pressure sensor and is slidably connected to the case up and down, the jacket is detachably connected to the lower fixture, a pressure regulating valve is detachably connected to the other side of the case, an air inlet pipe and an air outlet pipe are respectively arranged on the pressure regulating valve, the pressure regulating valve is connected to an air compression pump through the air inlet pipe, the pressure regulating valve is detachably connected to the bottom of the jacket through the air outlet pipe and is communicated with the inside of the jacket, an electric control board is detachably connected inside the case, and the pressure sensor, the pressure regulating valve and the operation screen are all electrically connected to the electric control board.

[0006] The syringe comprises an outer sleeve and a core rod, one end of the core rod is located in the outer sleeve and is sealingly and slidably connected to the outer sleeve, the other end of the core rod is located outside the top of the outer sleeve, a clamp and an operation screen are provided on the outside of one side of the chassis, the clamp is located on the side of the operation screen, the clamp comprises an upper clamp and a lower clamp distributed up and down, one end of the core rod located outside the top of the outer sleeve is detachably connected to the bottom of the upper clamp, the top of the upper clamp is detachably connected to a pressure sensor, the upper clamp is suspended outside the chassis through the pressure sensor and is slidably connected to the chassis up and down, the outer sleeve is detachably connected to the lower clamp, a pressure regulating valve is detachably connected to the outside of the other side of the chassis, an air inlet pipe and an air outlet pipe are respectively provided on the pressure regulating valve, the pressure regulating valve is connected to an air compression pump through the air inlet pipe, the pressure regulating valve is detachably connected to the bottom of the outer sleeve through the air outlet pipe and is communicated with the inside of the outer sleeve, an electric control board is detachably connected in the chassis, and the pressure sensor, the pressure regulating valve and the operation screen are all electrically connected to the electric control board. In the present invention, the pressure regulating valve can be an ITV valve; when performing a pull-out test, water is injected into the syringe to discharge bubbles visible to the naked eye, the syringe piston is placed on the nominal capacity scale of the syringe, and then water is discharged; the syringe jacket is fixed with the lower clamp, and the core rod is matched with the upper clamp; after setting a certain force value and moving speed through the operation screen, the device is started by power supply; an increasing pulling force is applied to pull the core rod upward through the upper clamp until the pulling force reaches 100N or the syringe is sucked again; when performing a push-back test, another syringe is taken, water is injected, bubbles visible to the naked eye are discharged, and the syringe is activated. The stopper is placed on the nominal capacity scale of the syringe, and then the water is discharged; the syringe jacket is fixed with the lower clamp, and the air outlet pipe is connected to the bottom of the jacket (i.e., the injection needle or the conical joint); the device is started after a certain pressure value and pressure increase rate are set through the operation screen; the air compression pump applies a pressure that increases slowly at a specific rate to the inside of the syringe, and observes whether the syringe piston sealing ring retreats in the syringe jacket; therefore, the present invention can simultaneously satisfy the requirements of the mechanical generating device and the pressure generating device on one platform, realize the pull-out test and the push-back test, achieve the purpose of reducing costs and facilitating operation, and effectively improve the detection efficiency.

[0007] Preferably, the chassis is provided with a slide rail and a linear drive electrically connected to the electric control board, the slide rail and the chassis are parallel in height direction, the slide rail is detachably connected to the chassis and is located on the side of the electric control board, the slide rail is provided with a sliding seat, the sliding seat is slidably connected to the slide rail under the drive of the linear drive, the sliding seat is provided with a horizontally arranged connecting rod, the side wall of the chassis is provided with a rectangular hole for facilitating the connecting rod to slide up and down, one end of the connecting rod is detachably fixedly connected to the sliding seat, the other end of the connecting rod passes through the rectangular hole and is detachably connected to the top of the pressure sensor, and the bottom of the pressure sensor is detachably connected to the upper clamp. The linear drive can be a servo motor, etc.; the electric control board controls the linear drive to work, and the linear drive realizes the upward movement of the core rod through the upper clamp; the pressure sensor detects the tension value in real time and transmits it to the electric control board, which is fed back to the operation screen by the electric control board, so that the operator can observe the change of the tension value in real time.

[0008] Preferably, a push-pull block is provided at one end of the core rod outside the top of the outer sleeve, the push-pull block is circular in shape, the diameter of the push-pull block is larger than the diameter of the core rod, and the core rod is fixedly connected to the center of the push-pull block. The push-pull block facilitates the back-and-forth push-pull operation of the core rod.

[0009] Preferably, the upper fixture is C-shaped, the bottom of the upper fixture is arranged vertically, one side of the upper fixture is detachably connected to the pressure sensor, the other side of the upper fixture corresponding to the upper fixture is provided with a limit groove 1, the opening end of the limit groove 1 is located on the opening end of the upper fixture, and the bottom of the limit groove 1 is provided with a slot matching the core rod. The core rod is inserted into the slot, and the push-pull block acts on the inner wall of the upper fixture, so that the upper fixture drives the core rod to move up for pulling test under the drive of the linear drive, and the structure is simple and easy to operate.

[0010] Preferably, projections extend outwardly from the top of the outer sleeve to the left and right sides thereof, and the projections are fixedly connected to the outer side wall of the outer sleeve.

[0011] Preferably, the lower clamp includes a rectangular block, one end of which is detachably connected to the chassis, the rectangular block is provided with a V-shaped groove corresponding to the limiting groove 1, the V-shaped groove runs through the upper and lower surfaces of the rectangular block, the other end of the rectangular block is provided with a spring clamp, the spring clamp is elastically connected to the rectangular block, the V-shaped groove is located between the spring clamp and the chassis, the lower limit of the clamping action of the outer jacket in the spring clamp is located in the V-shaped groove, one side of the rectangular block is provided with a U-shaped groove matching the protrusion, the V-shaped groove is located on the open end of the U-shaped groove and away from the other side corresponding to the rectangular block, and the bottom of the U-shaped groove is close to the other side corresponding to the rectangular block. When the lower clamp limits the outer jacket, the operator places the outer jacket vertically in the V-shaped groove and inserts the protrusion into the U-shaped groove, which is conducive to the vertical limitation of the outer jacket, and the spring clamp clamps the outer jacket, which is conducive to the horizontal limitation of the outer jacket, so as to facilitate the pull-out test and the push-back test, and the structure is simple and easy to operate.

[0012] Preferably, the spring clamp comprises a spring shaft, a limit plate and a spring body, the rectangular block being provided with a through hole matching the spring shaft, the through hole being located on the side of the V-shaped groove, one side of the rectangular block being provided with a limit groove 2 matching the limit plate, the limit groove 2 being connected to the V-shaped groove, the limit groove 2 being located at one end of the through hole, and the other side corresponding to the rectangular block being provided with a limit groove 3 matching the spring body, the limit groove 3 being located at the other end of the through hole, one end of the spring shaft passing through the through hole is detachably connected to the limit plate, one end of the limit plate is located in the limit groove 2 and detachably connected to the spring shaft, the other end of the limit plate is located in the V-shaped groove and in contact with the outer sleeve, the other end of the spring shaft is suspended outside the rectangular block, the spring body is sleeved on the other end of the spring shaft, and the spring body is limited between the end of the spring shaft and the limit groove 3. When the spring clamp performs a limiting operation on the outer sleeve, the operator first pulls out the spring shaft to make the limiting plate disengage from the V-shaped groove, then places the syringe outer sleeve in the V-shaped groove, and inserts the protrusion into the U-shaped groove, and finally gradually relaxes the spring shaft so that the spring shaft clamps the syringe outer sleeve under the action of the spring body. The operation is simple and convenient, and the structural device can be applied to syringes of different structures, such as syringes with common core rod self-destruction structures, syringes with needle tube self-destruction structures, and syringes with piston self-destruction structures, etc., and has a wide range of applications.

[0013] Preferably, an annular L-shaped groove is provided on the outer wall of one end of the spring shaft, and an assembly hole is provided on the limit plate. The limit plate is sleeved on the spring shaft through the assembly hole and the L-shaped groove. A nut is provided at one end of the spring shaft, and the nut is connected to the internal thread of the spring shaft and clamps the limit plate. The other end of the spring shaft is threadedly connected to the limit bolt, and the spring body is limited between the limit bolt and the limit groove three. When the spring clamp is installed on the rectangular block, the limit plate is sleeved on one end of the spring shaft through the assembly hole and the L-shaped groove, and then the nut is tightened to position the limit plate; then the other end of the spring shaft is inserted and passed through the through hole, and the spring body is sleeved on this end, and finally the limit bolt is tightened, so that one end of the spring body is limited in the limit groove three, and the other end of the spring body is in contact with the limit bolt. The structure is simple and the installation and disassembly are convenient and quick.

[0014] Preferably, a bottom plate is provided at the bottom of the chassis, the bottom plate is detachably connected to the chassis, an L-shaped mounting block is provided on the bottom plate, one side of the mounting block is detachably connected to the bottom plate, and the rectangular block is detachably connected to the other side of the mounting block. This design allows the mounting block to be replaced according to the length specifications of different syringes, and the detachable installation of the upper and lower fixture components facilitates tooling adjustment, avoids wear and tear due to repeated use, and saves maintenance costs for the device.

[0015] The beneficial effects of the present invention are as follows: the present invention can simultaneously satisfy the requirements of a mechanical generating device and a pressure generating device on a single platform, realize pull-out testing and push-back testing, thereby achieving the purpose of reducing costs and facilitating operation, and effectively improving detection efficiency; the structure is simple and easy to operate; the structural device can be applied to syringes of different structures, such as syringes with common core rod self-destruction structures, syringes with needle tube self-destruction structures, and syringes with piston self-destruction structures, etc., and has a wide range of applications; it is conducive to realizing tooling adjustment, avoiding wear due to repeated use, and thus saving device maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A magnified view of the structure at C in the middle; Figure 3 It is a front view of the present invention; Figure 4 yes Figure 3 Sectional view of AA in the middle; Figure 5 is a structural schematic diagram of the lower clamp; Figure 6 yes Figure 5 Cross-sectional view of the middle BB; Figure 7 yes Figure 6Enlarged view of the structure at D in the middle.

[0017] In the figure: 1. syringe, 2. chassis, 3. jacket, 4. core rod, 5. operation screen, 6. upper fixture, 7. lower fixture, 8. pressure sensor, 9. pressure regulating valve, 10. air inlet pipe, 11. air outlet pipe, 12. electric control board, 13. slide rail, 14. linear drive, 15. sliding seat, 16. connecting rod, 17. rectangular hole, 18. push-pull block, 19. limit slot 1, 20. card slot, 21. convex block, 22. rectangular block, 23. V-shaped slot, 24. spring fixture, 25. U-shaped card slot, 26. spring shaft, 27. limit plate, 28. spring body, 29. through hole, 30. limit slot 2, 31. limit slot 3, 32. L-shaped slot, 33. assembly hole, 34. Nut, 35. Limit bolt, 36. Base plate, 37. Mounting block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with 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 of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] Unless otherwise specified, the relative arrangement of the components, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present application. For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" are used in the embodiments to illustrate the relationship between an element or feature shown in the figure and another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be fixed "on" other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be fixed in other ways (rotated 90 degrees or located in other orientations), and the spatial relative description used here can be interpreted accordingly. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, process and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, process and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0021] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4In the embodiment described, a syringe self-destruct characteristic testing device comprises a syringe 1 and a case 2, wherein the syringe 1 comprises a jacket 3 and a core rod 4, wherein one end of the core rod 4 is located inside the jacket 3 and is sealed and slidably connected to the jacket 3, and the other end of the core rod 4 is located outside the top of the jacket 3, and a clamp and an operating screen 5 are provided on the outside of one side of the case 2, wherein the clamp is located on the side of the operating screen 5, and the clamp comprises an upper clamp 6 and a lower clamp 7 which are distributed up and down, wherein one end of the core rod 4 which is located outside the top of the jacket 3 is detachably connected to the bottom of the upper clamp 6, and a pressure sensor 8 is detachably connected to the top of the upper clamp 6, and the upper clamp 6 is detachably connected to the bottom of the upper clamp 6. 6 is suspended outside the chassis 2 through the pressure sensor 8 and is connected to the chassis 2 by sliding up and down. The outer sleeve 3 is detachably connected to the lower clamp 7. A pressure regulating valve 9 is detachably connected to the outside of the other side of the chassis 2. An air inlet pipe 10 and an air outlet pipe 11 are respectively provided on the pressure regulating valve 9. The pressure regulating valve 9 is connected to an air compression pump through the air inlet pipe 10. The pressure regulating valve 9 is detachably connected to the bottom of the outer sleeve 3 through the air outlet pipe 11 and is communicated with the inside of the outer sleeve 3. An electric control board 12 is detachably connected inside the chassis 2. The pressure sensor 8, the pressure regulating valve 9 and the operation screen 5 are all electrically connected to the electric control board 12.

[0023] like Figure 1 , Figure 3 and Figure 4 As shown, a slide rail 13 and a linear drive 14 electrically connected to the electric control board 12 are provided in the chassis 2. The height directions of the slide rail 13 and the chassis 2 are parallel to each other. The slide rail 13 is detachably connected to the chassis 2 and is located on the side of the electric control board 12. A sliding seat 15 is provided on the slide rail 13. The sliding seat 15 is slidably connected to the slide rail 13 up and down under the drive of the linear drive 14. A horizontally arranged connecting rod 16 is provided on the sliding seat 15. A rectangular hole 17 is provided on the side wall of the chassis 2 for facilitating the connecting rod 16 to slide up and down. One end of the connecting rod 16 is detachably fixedly connected to the sliding seat 15, and the other end of the connecting rod 16 passes through the rectangular hole 17 and is detachably connected to the top of the pressure sensor 8, and the bottom of the pressure sensor 8 is detachably connected to the upper clamp 6.

[0024] like Figure 2 As shown, a push-pull block 18 is provided at one end of the core rod 4 outside the top of the outer sleeve 3. The push-pull block 18 is circular in shape, and the diameter of the push-pull block 18 is larger than the diameter of the core rod 4. The core rod 4 is fixedly connected to the center of the push-pull block 18.

[0025] like Figure 2 As shown, the upper clamp 6 is C-shaped, the bottom of the upper clamp 6 is arranged vertically, one side of the upper clamp 6 is detachably connected to the pressure sensor 8, and the other side corresponding to the upper clamp 6 is provided with a limit groove 19, the open end of the limit groove 19 is located on the open end of the upper clamp 6, and the bottom of the limit groove 19 is provided with a card slot 20 matching the core rod 4.

[0026] like Figure 2As shown, a protrusion 21 extends outwardly from the top of the outer sleeve 3 to the left and right sides thereof, and the protrusion 21 is fixedly connected to the outer side wall of the outer sleeve 3 .

[0027] like Figure 2 As shown, the lower clamp 7 includes a rectangular block 22, one end of which is detachably connected to the chassis 2, and a V-shaped groove 23 corresponding to the limit groove 19 is provided on the rectangular block 22, and the V-shaped groove 23 runs through the upper and lower surfaces of the rectangular block 22, and a spring clamp 24 is provided at the other end of the rectangular block 22, and the spring clamp 24 is elastically connected to the rectangular block 22, and the V-shaped groove 23 is located between the spring clamp 24 and the chassis 2, and the sleeve 3 is located in the V-shaped groove 23 at the lower limit of the clamping action of the spring clamp 24, and a U-shaped groove 25 matching the protrusion 21 is provided on one side of the rectangular block 22, and the V-shaped groove 23 is located on the open end of the U-shaped groove 25 and away from the other side corresponding to the rectangular block 22, and the bottom of the U-shaped groove 25 is close to the other side corresponding to the rectangular block 22.

[0028] like Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the spring clamp 24 includes a spring shaft 26, a limiting plate 27 and a spring body 28. A through hole 29 matching the spring shaft 26 is provided in the rectangular block 22, and the through hole 29 is located on the side of the V-shaped groove 23. A second limiting groove 30 matching the limiting plate 27 is provided on one side of the rectangular block 22. The limiting groove 30 is connected to the V-shaped groove 23, and the limiting groove 30 is located at one end of the through hole 29. A third limiting groove 31 matching the spring body 28 is provided on the other side of the rectangular block 22. The limiting groove 31 is provided on the other side of the rectangular block 22. 31 is located at the other end of the through hole 29, one end of the spring shaft 26 passes through the through hole 29 and is detachably connected to the limiting plate 27, one end of the limiting plate 27 is located in the limiting groove 2 30 and is detachably connected to the spring shaft 26, the other end of the limiting plate 27 is located in the V-shaped groove 23 and contacts with the outer sleeve 3, the other end of the spring shaft 26 is suspended outside the rectangular block 22, the spring body 28 is sleeved on the other end of the spring shaft 26, and the spring body 28 is limited between the end of the spring shaft 26 and the limiting groove 31.

[0029] like Figure 6 and Figure 7 As shown, an annular L-shaped groove 32 is provided on the outer side wall of one end of the spring shaft 26, and an assembly hole 33 is provided on the limit plate 27. The limit plate 27 is sleeved on the spring shaft 26 through the assembly hole 33 and the L-shaped groove 32. A nut 34 is provided on one end of the spring shaft 26. The nut 34 is connected to the internal thread of the spring shaft 26 and clamps the limit plate 27. The other end of the spring shaft 26 is threadedly connected to the limit bolt 35, and the spring body 28 is limited between the limit bolt 35 and the limit groove 31.

[0030] like Figure 1As shown, a bottom plate 36 is provided at the bottom of the chassis 2, and the bottom plate 36 is detachably connected to the chassis 2. An L-shaped mounting block 37 is provided on the bottom plate 36, and one side of the mounting block 37 is detachably connected to the bottom plate 36, and the rectangular block 22 is detachably connected to the other side of the mounting block 37.

[0031] Embodiment 1. In the present invention, the pressure regulating valve 9 can be an ITV valve, and the linear drive 14 can be a servo motor, etc.; when performing a pull-out test, water is injected into the syringe to discharge bubbles visible to the naked eye, the syringe piston is placed on the nominal capacity scale of the syringe, and then the water is discharged; the syringe jacket 3 is fixed with the lower clamp 7, and the core rod 4 is matched with the upper clamp 6; after setting a certain force value and moving speed through the operating screen 5, the device is started by power supply; the electric control board 12 controls the linear drive 14 to work, and the linear drive 14 applies an increasing pulling force to pull the core rod 4 upward through the upper clamp 6 until the pulling force reaches 100N or the syringe is sucked again.

[0032] Embodiment 2: When performing a pushback test, take another syringe, inject water and discharge visible bubbles, place the syringe piston on the nominal capacity scale of the syringe, and then drain the water; fix the syringe jacket 3 with the lower clamp 7, and connect the air outlet pipe 11 to the bottom of the jacket 3 (i.e., the injection needle or conical joint); set a certain pressure value and pressure increase rate through the operation screen 5 and start the device; the air compression pump applies a pressure that increases slowly at a specific rate to the inside of the syringe through the pressure regulating valve 9, and observe whether the syringe piston sealing ring retreats in the syringe jacket 3; therefore, the present invention can simultaneously meet the requirements of the mechanical generating device and the pressure generating device on one platform, realize the pull-out test and the pushback test, achieve the purpose of reducing costs and facilitating operation, and effectively improve the detection efficiency.

[0033] Embodiment 3, during the operation of embodiment 1 and embodiment 2, when the core rod 4 cooperates with the upper clamp 6, the core rod 4 is inserted into the slot 20, and at the same time the push-pull block acts on the inner wall of the upper clamp 6, so that the upper clamp 6 drives the core rod 4 upward under the drive of the linear drive 14 to perform a pulling test. The structure is simple and easy to operate.

[0034] Embodiment 4, during the operation of Embodiment 1 and Embodiment 2, when the lower clamp 7 limits the outer sleeve 3, the operator places the outer sleeve 3 vertically in the V-shaped groove 23, and inserts the protrusion 21 into the U-shaped groove 25, which is beneficial to the vertical limitation of the outer sleeve 3; at the same time, the spring clamp 24 clamps the outer sleeve 3, which is beneficial to the horizontal limitation of the outer sleeve 3, thereby facilitating the pull-out test and the push-back test, and the structure is simple and easy to operate.

[0035] Embodiment 5. In embodiment 4, when the spring clamp 24 performs a limiting operation on the sleeve 3, the operator first pulls out the spring shaft 26 to disengage the limiting plate 27 from the V-groove 23, and then places the syringe sleeve 3 in the V-groove 23, and inserts the protrusion 21 into the U-shaped groove 25, and finally gradually loosens the spring shaft 26 so that the spring shaft 26 clamps the syringe sleeve 3 under the action of the spring body 28. The operation is simple and convenient, and the structural device can be applied to syringes of different structures, such as syringes with common core rod self-destruction structures, syringes with needle tube self-destruction structures, and syringes with piston self-destruction structures, etc., and has a wide range of applications.

[0036] Embodiment 6, when the spring clamp 24 is installed on the rectangular block 22, the limit plate 27 is mounted on one end of the spring shaft 26 through the assembly hole 33 and the L-shaped groove 32, and then the nut 34 is tightened to position the limit plate 27; then the other end of the spring shaft 26 is inserted into and passes through the through hole 29, and then the spring body 28 is mounted on this end, and finally the limit bolt 35 is tightened, so that one end of the spring body 28 is limited in the limit groove three 31, and the other end of the spring body 28 is in contact with the limit bolt 35. The structure is simple, and the installation and disassembly are convenient and quick.

Claims

1. A syringe self-destruction characteristic testing device, characterized in that: The invention comprises a syringe (1) and a case (2), wherein the syringe (1) comprises an outer sleeve (3) and a core rod (4), one end of the core rod (4) is located inside the outer sleeve (3) and is sealingly and slidably connected to the outer sleeve (3), and the other end of the core rod (4) is located outside the top of the outer sleeve (3). A clamp and an operating screen (5) are provided on the outside of one side of the case (2), wherein the clamp is located on the side of the operating screen (5), and the clamp comprises an upper clamp (6) and a lower clamp (7) which are distributed in an upper and lower manner. One end of the core rod (4) located outside the top of the outer sleeve (3) is detachably connected to the bottom of the upper clamp (6), and the top of the upper clamp (6) is detachably connected to a pressure sensor (8), and the upper clamp (6) is connected to the pressure sensor (8). The outer sleeve (3) is suspended outside the chassis (2) and is slidably connected to the chassis (2) up and down. The outer sleeve (3) is detachably connected to the lower clamp (7). A pressure regulating valve (9) is detachably connected to the outside of the other side of the chassis (2). An air inlet pipe (10) and an air outlet pipe (11) are respectively provided on the pressure regulating valve (9). The pressure regulating valve (9) is connected to an air compression pump via the air inlet pipe (10). The pressure regulating valve (9) is detachably connected to the bottom of the outer sleeve (3) via the air outlet pipe (11) and is in communication with the interior of the outer sleeve (3). An electric control board (12) is detachably connected inside the chassis (2). The pressure sensor (8), the pressure regulating valve (9) and the operating screen (5) are all electrically connected to the electric control board (12).

2. A syringe self-destruction characteristic testing device according to claim 1, characterized in that: The chassis (2) is provided with a slide rail (13) and a linear drive (14) electrically connected to the electric control board (12); the slide rail (13) and the chassis (2) are parallel in height direction; the slide rail (13) is detachably connected to the chassis (2) and is located on the side of the electric control board (12); a sliding seat (15) is provided on the slide rail (13); the sliding seat (15) is slidably connected to the slide rail (13) up and down under the drive of the linear drive (14); a horizontally arranged connecting rod (16) is provided on the sliding seat (15); a rectangular hole (17) is provided on the side wall of the chassis (2) for facilitating the connecting rod (16) to slide up and down; one end of the connecting rod (16) is detachably fixedly connected to the sliding seat (15); the other end of the connecting rod (16) passes through the rectangular hole (17) and is detachably connected to the top of the pressure sensor (8); and the bottom of the pressure sensor (8) is detachably connected to the upper clamp (6).

3. A syringe self-destruction characteristic testing device according to claim 1, characterized in that: A push-pull block (18) is provided at one end of the core rod (4) located outside the top of the outer sleeve (3); the push-pull block (18) is circular in shape; the diameter of the push-pull block (18) is greater than the diameter of the core rod (4); and the core rod (4) is fixedly connected to the center of the push-pull block (18).

4. A syringe self-destruction characteristic testing device according to claim 3, characterized in that: The upper clamp (6) is C-shaped, the bottom of the upper clamp (6) is arranged vertically, one side of the upper clamp (6) is detachably connected to the pressure sensor (8), the other side of the upper clamp (6) corresponding to the upper clamp (6) is provided with a limiting groove (19), the opening end of the limiting groove (19) is located on the opening end of the upper clamp (6), and the bottom of the limiting groove (19) is provided with a slot (20) matching the core rod (4).

5. A syringe self-destruction characteristic testing device according to claim 4, characterized in that: The top of the outer sleeve (3) is provided with protrusions (21) extending outwardly to the left and right sides thereof, and the protrusions (21) are fixedly connected to the outer side wall of the outer sleeve (3).

6. A syringe self-destruction characteristic testing device according to claim 5, characterized in that: The lower clamp (7) comprises a rectangular block (22), one end of the rectangular block (22) being detachably connected to the chassis (2), the rectangular block (22) being provided with a V-shaped groove (23) corresponding to the first limiting groove (19) in the upper and lower directions, the V-shaped groove (23) penetrating the upper and lower surfaces of the rectangular block (22), the other end of the rectangular block (22) being provided with a spring clamp (24), the spring clamp (24) being elastically connected to the rectangular block (22), the V-shaped groove (23) being located at the upper and lower sides of the rectangular block (22). The outer sleeve (3) is located between the spring clamp (24) and the chassis (2); the lower limit of the clamping action of the spring clamp (24) is located in the V-shaped groove (23); a U-shaped groove (25) matching the protrusion (21) is provided on one side of the rectangular block (22); the V-shaped groove (23) is located on the open end of the U-shaped groove (25) and away from the other side corresponding to the rectangular block (22); and the bottom of the U-shaped groove (25) is close to the other side corresponding to the rectangular block (22).

7. A syringe self-destruction characteristic testing device according to claim 6, characterized in that: The spring clamp (24) comprises a spring shaft (26), a limiting plate (27) and a spring body (28); a through hole (29) matching the spring shaft (26) is provided in the rectangular block (22); the through hole (29) is located on the side of the V-shaped groove (23); a second limiting groove (30) matching the limiting plate (27) is provided on one side of the rectangular block (22); the second limiting groove (30) is connected to the V-shaped groove (23); the second limiting groove (30) is located at one end of the through hole (29); a third limiting groove (31) matching the spring body (28) is provided on the other side of the rectangular block (22); the limiting groove The third (31) is located at the other end of the through hole (29); one end of the spring shaft (26) passes through the through hole (29) and is detachably connected to the limiting plate (27); one end of the limiting plate (27) is located in the second limiting groove (30) and is detachably connected to the spring shaft (26); the other end of the limiting plate (27) is located in the V-shaped groove (23) and is in contact with the outer sleeve (3); the other end of the spring shaft (26) is suspended outside the rectangular block (22); the spring body (28) is sleeved on the other end of the spring shaft (26); the spring body (28) is limited between the end of the spring shaft (26) and the third limiting groove (31).

8. A syringe self-destruction characteristic testing device according to claim 7, characterized in that: An annular L-shaped groove (32) is provided on the outer wall of one end of the spring shaft (26); an assembly hole (33) is provided on the limit plate (27); the limit plate (27) is sleeved on the spring shaft (26) through the assembly hole (33) and in cooperation with the L-shaped groove (32); a nut (34) is provided on one end of the spring shaft (26); the nut (34) is connected to the inner thread of the spring shaft (26) and clamps the limit plate (27); the other end of the spring shaft (26) is connected to a limit bolt (35) by thread; the spring body (28) is limited between the limit bolt (35) and the limit groove three (31).

9. A syringe self-destruction characteristic testing device according to claim 6, characterized in that: A bottom plate (36) is provided at the bottom of the chassis (2), the bottom plate (36) being detachably connected to the chassis (2), an L-shaped mounting block (37) being provided on the bottom plate (36), one side of the mounting block (37) being detachably connected to the bottom plate (36), and the rectangular block (22) being detachably connected to the other side of the mounting block (37).

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