Hemodialysis filtration replacement liquid sampling device

Abstract

The utility model discloses a hemodiafiltration displacement liquid sampling device, which relates to the technical field of displacement liquid sampling and comprises a sampling cylinder, a threaded connection pipe arranged at the top end of the sampling cylinder, a second damping rotating shaft fixedly mounted on the outer wall of the sampling cylinder, and a protection component arranged at the top end of the sampling cylinder. A fixing assembly is arranged on one side of the outer wall of the supporting cylinder. The protection assembly comprises a protection cover and a mounting shell, the protection cover is fixedly connected with the output end of the second damping rotating shaft, a spring is fixedly mounted between the opposite sides of the moving plate and the inner wall of the mounting shell, a push block is fixedly mounted on one side of the outer wall of the moving plate, and one end of the outer wall of the push block slidably penetrates through the outer wall of the mounting shell. In order to prevent the threaded connection pipe from being polluted by dust, impurities and the like due to long-time exposure in the external environment, the protective cover can be rotated to protect the threaded connection pipe, and then the protective cover is fixed, so that the threaded connection pipe is prevented from being polluted to influence subsequent collection of replacement liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of substitution fluid sampling, in particular to a hemodiafiltration substitution fluid sampling device. Background Art

[0002] According to the Blood Purification Standard Operating Procedure, dialysis fluid monitoring requires monthly bacterial monitoring. However, there are no dedicated dialysis fluid collection devices in clinical practice. The traditional method involves withdrawing replacement fluid with a syringe, injecting it into a sterile container, and sending it to the laboratory for sampling and inoculation for bacterial culture.

[0003] In the prior art, such as the hemodialysis filtration replacement fluid sampler disclosed in Patent No. CN215961439U, the purpose is to solve the secondary contamination link and multi-link transportation problems existing in the specimen collection process in the prior art, so as to realize sterile sampling and direct inspection after collection. The present invention relates to a replacement fluid collection device, including a sampling port, a one-way diaphragm, a sampling port, a body, a tail seat, and a hollow suction cup fixing seat. The body is composed of a sampling area and a control area, wherein the sampling area is connected to the piston by a pull rod, and the control area is composed of a slide rod, a scale line, and a card slot. The slide rod in the control area controls the pull rod in the sampling area to realize sample collection and fix it in the card slot position. After collection, it can be directly sent for inspection, and sampling is realized by the sampling port for clinical inspection. The entire device adopts sterile outer packaging to ensure sterile and safe sampling. After sampling, it does not need to be transferred to a sterile container and can be directly sent to the inspection department, thereby reducing link pollution, being easy to operate, simple to manufacture, and low in cost.

[0004] Although the above patent can collect replacement fluid, there are still some problems. The spiral connecting tube of the patent is directly exposed to the outside. Long-term exposure to the external environment may cause dust and impurities to fall into the spiral connecting tube, thereby contaminating the replacement fluid. At the same time, the sliding rod can only be fixed in one position. For this reason, the utility model provides a hemodialysis filtration replacement fluid sampling device. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a hemodialysis filtration replacement fluid sampling device, which solves the problem that the spiral connecting tube is directly exposed to the outside and is exposed to the external environment for a long time, which may cause dust and impurities to fall into the spiral connecting tube, thereby contaminating the replacement fluid.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hemodialysis filtration replacement fluid sampling device, comprising a sampling cylinder, a support cylinder fixedly mounted on the bottom end of the sampling cylinder, a sampling port fixedly connected to the top end of the sampling cylinder, a threaded connection tube threadedly connected to the inner wall of the sampling port, a second damping shaft fixedly mounted on the outer wall of the sampling cylinder, a protective assembly provided on the top end of the sampling cylinder, and a fixing assembly provided on one side of the outer wall of the support cylinder;

[0007] The protective assembly includes a protective cover and a mounting shell, the protective cover is fixedly connected to the output end of the second damping shaft, a movable plate is movably inserted into the inner wall of the mounting shell, a spring is fixedly installed between the movable plate and the opposite side of the inner wall of the mounting shell, a push block is fixedly installed on one side of the outer wall of the movable plate, and one end of the outer wall of the push block slides through the outer wall of the mounting shell;

[0008] The fixing assembly includes a first damping shaft, and a rotating plate is fixedly mounted on the output end of the first damping shaft.

[0009] Preferably, the mounting shell is fixedly connected to the sampling tube, the outer wall of the movable plate is fixedly installed with an L-shaped plate, the outer wall of the L-shaped plate is fixedly installed with a beveled block, the outer wall of the protective cover is fixedly installed with a connecting plate, the bottom end of the connecting plate is fixedly installed with a snap-on shell, and the snap-on shell matches the beveled block.

[0010] Preferably, a pull rod is slidably passed through the bottom end of the sampling tube, a piston is fixedly installed on the top end of the pull rod, the piston is slidably connected to the inner wall of the sampling tube, a pull plate is fixedly installed on the bottom end of the pull rod, two slide grooves are opened through the outer wall of the support tube, the pull plate passes through the inner walls of the two slide grooves, and a support plate is fixedly installed on the bottom end of the support tube.

[0011] Preferably, the bottom end of the first damping shaft is fixedly connected to the support plate, and a group of slots are evenly formed through the outer wall of the rotating plate.

[0012] Preferably, a one-way diaphragm is fixedly mounted on the inner wall of the threaded connecting pipe, and a thread groove is provided on the inner wall of the top end of the threaded connecting pipe.

[0013] Preferably, the outer wall of the sampling tube is provided with a transparent observation window, and the outer wall of the transparent observation window is provided with scale lines.

[0014] Beneficial effects

[0015] The present invention provides a hemodialysis filtration replacement fluid sampling device. Compared with the prior art, it has the following advantages:

[0016] (1) The hemodialysis filtration replacement fluid sampling device, when the device is not used for a long time, rotate the protective cover, the protective cover drives the connecting plate and the snap shell to rotate, when the snap shell rotates to the bevel block, the snap shell will squeeze the bevel block, the bevel block will be squeezed and will move toward the sampling tube, when the snap shell rotates to a horizontal angle, the bevel block is not squeezed by the snap shell, the bevel block is pushed into the inner wall of the snap shell under the action of the spring force, thereby completing the fixing of the protective cover, at this time the protective cover can protect the threaded connection tube from being exposed to the external environment, preventing the threaded connection tube from being exposed to the external environment for a long time and being contaminated by dust and impurities, when it is necessary to use the threaded connection tube to collect replacement fluid, press the push block inward, at this time the push block drives the moving plate and the bevel block to move inward, so that the bevel block is removed from the snap shell, at this time the protective cover can be rotated, the protective cover can be rotated to the other side of the sampling tube, at this time the threaded connection tube can be exposed, and the replacement fluid can be collected.

[0017] (2) The hemodialysis filtration replacement fluid sampling device can move the pull rod and the pull plate. When the pull rod and the pull plate need to be fixed, the pull plate can be moved to the height of the slot attachment position, and then the rotating plate can be rotated so that the pull plate is on the inner wall of the slot. At this time, the pull rod and the pull plate can be fixed. Since multiple slots are provided, the pull rod and the pull plate can be fixed at multiple different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the utility model from another perspective;

[0020] Figure 3 This is a cross-sectional view of the overall structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the relevant structure of the sampling tube of the present utility model;

[0022] Figure 5 For the utility model Figure 4 Enlarged view of point A in the middle.

[0023] In the figure: 1. Sampling cylinder; 2. Pull rod; 3. Piston; 4. Pull plate; 5. Fixed assembly; 51. First damping shaft; 52. Rotating plate; 53. Card slot; 6. Second damping shaft; 7. Protective assembly; 71. Protective cover; 72. Connecting plate; 73. Card shell; 74. Mounting shell; 75. Push block; 76. Moving plate; 77. Spring; 78. L-shaped plate; 79. Bevel block; 8. Sampling port; 9. Threaded connecting pipe; 10. One-way diaphragm; 11. Slide groove; 12. Support plate; 13. Support cylinder; 14. Transparent observation window. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] This utility model provides two technical solutions:

[0026] Figure 1-Figure 5 The first embodiment is shown: a hemodiafiltration replacement fluid sampling device, comprising a sampling cylinder 1, a support cylinder 13 fixedly mounted on the bottom end of the sampling cylinder 1, a sampling port 8 fixedly connected to the top end of the sampling cylinder 1, a threaded connection tube 9 threadedly connected to the inner wall of the sampling port 8, a second damping shaft 6 fixedly mounted on the outer wall of the sampling cylinder 1, a protective assembly 7 provided on the top end of the sampling cylinder 1, and a fixing assembly 5 provided on one side of the outer wall of the support cylinder 13;

[0027] The protective assembly 7 includes a protective cover 71 and a mounting shell 74. The protective cover 71 is fixedly connected to the output end of the second damping shaft 6. The second damping shaft 6 can enable the protective cover 71 to be accurately positioned at any angle during the opening and closing process. The protective cover 71 can stay at a suitable angle and will not swing at will due to its own gravity or slight external force interference. A movable plate 76 is movably inserted into the inner wall of the mounting shell 74. A spring 77 is fixedly installed between the movable plate 76 and the opposite side of the inner wall of the mounting shell 74. A push block 75 is fixedly installed on one side of the outer wall of the movable plate 76. One end of the outer wall of the push block 75 slides through the outer wall of the mounting shell 74. When the push block 75 is pushed, the movable plate 76 can be squeezed inward and moved. When the push of the push block 75 stops, the push block 75 is reset to its original position under the action of the elastic force of the spring 77.

[0028] The fixing assembly 5 includes a first damping shaft 51 , and a rotating plate 52 is fixedly mounted on the output end of the first damping shaft 51 . The first damping shaft 51 can prevent the rotating plate 52 from being easily affected by external factors after rotation.

[0029] The mounting shell 74 is fixedly connected to the sampling tube 1, the outer wall of the movable plate 76 is fixedly mounted with an L-shaped plate 78, the outer wall of the L-shaped plate 78 is fixedly mounted with a bevel block 79, the outer wall of the protective cover 71 is fixedly mounted with a connecting plate 72, the bottom end of the connecting plate 72 is fixedly mounted with a snap-on shell 73, the snap-on shell 73 matches the bevel block 79, and the snap-on shell 73 can squeeze the bevel block 79 during the rotation process. When the snap-on shell 73 rotates to a horizontal position, the bevel block 79 is pushed into the snap-on shell 73 under the elastic force of the spring 77, thereby completing the fixation of the protective cover 71.

[0030] Figure 1-Figure 5 The second embodiment is shown, and the main difference from the first embodiment is that: a pull rod 2 is slidably penetrated through the bottom end of the sampling cylinder 1, and a piston 3 is fixedly installed on the top end of the pull rod 2. The piston 3 is slidably connected to the inner wall of the sampling cylinder 1, and a pull plate 4 is fixedly installed on the bottom end of the pull rod 2. Pulling the pull plate 4 can drive the piston 3 to move in the sampling cylinder 1, thereby completing the collection or discharge of the replacement fluid. Two slide grooves 11 are provided through the outer wall of the support cylinder 13, and the pull plate 4 penetrates the inner walls of the two slide grooves 11. The bottom end of the support cylinder 13 is fixedly installed with a support plate 12, and the support plate 12 can enable the device to be placed stably on the desktop.

[0031] The bottom end of the first damping shaft 51 is fixedly connected to the support plate 12, and a group of slots 53 are evenly opened on the outer wall of the rotating plate 52. The rotating plate 52 can be rotated to fix the slots 53 to the pulling plate 4. A one-way diaphragm 10 is fixedly installed on the inner wall of the threaded connecting tube 9. The one-way diaphragm 10 is a prior art. The replacement fluid can enter the sampling cylinder 1 through the one-way diaphragm 10 in the threaded connecting tube 9. The one-way diaphragm 10 allows the replacement fluid to flow into the sampling cylinder 1, but prevents it from flowing back. A threaded groove is opened on the inner wall of the top end of the threaded connecting tube 9 to facilitate the spiral connection of the threaded connecting tube 9 to the hemodialysis filtration replacement fluid port. The outer wall of the sampling cylinder 1 is provided with a transparent observation window 14, and the outer wall of the transparent observation window 14 is provided with a scale line to facilitate the staff to observe the content of the replacement fluid in the sampling cylinder 1.

[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] When the threaded connection pipe 9 is needed to collect the replacement fluid, the push block 75 is pressed inward, at this time the push block 75 drives the moving plate 76 and the bevel clamping block 79 to move inward, so that the bevel clamping block 79 is moved out of the clamping shell 73, at this time the protective cover 71 can be rotated to the other side of the sampling cylinder 1, at this time the threaded connection pipe 9 can be exposed, the threaded connection pipe 9 is connected with the hemodialysis filtration replacement fluid port, then the pull plate 4 is pulled down, the pull plate 4 drives the piston 3 to move downward through the pull rod 2, so that the replacement fluid can be drawn into the sampling cylinder 1, the capacity of the replacement fluid in the sampling cylinder 1 can be known through the transparent observation window 14, when the pull rod 2 and the pull plate 4 need to be fixed, the pull plate 4 can be moved to the height of the position adjacent to the clamping groove 53, then the rotating plate 52 is rotated, so that the pull plate 4 is on the inner wall of the clamping groove 53, at this time the fixing of the pull rod 2 and the pull plate 4 can be completed, since a plurality of clamping grooves 53 are arranged, the pull rod 2 and the pull plate 4 can be fixed at a plurality of different heights, the one-way diaphragm 10 prevents the hemodialysis filtration replacement fluid from flowing backward, when the replacement fluid in the sampling cylinder 1 needs to be taken out, the threaded connection pipe 9 is rotated to make the threaded connection pipe 9 fall off from the sampling port 8, then the pull plate 4 is pushed, so that the replacement fluid is discharged from the sampling cylinder 1, when the device is not used for a long time, the protective cover 71 is rotated, the connecting plate 72 and the clamping shell 73 are driven to rotate by the protective cover 71, when the clamping shell 73 is rotated to the bevel clamping block 79, the clamping shell 73 will press the bevel clamping block 79, the bevel clamping block 79 will move to the direction of the sampling cylinder 1 under the pressing, when the clamping shell 73 is rotated to the horizontal angle, at this time the bevel clamping block 79 is not pressed by the clamping shell 73, the bevel clamping block 79 is pushed into the inner wall of the clamping shell 73 under the elastic force of the spring 77, so that the fixing of the protective cover 71 is completed, at this time the protective cover 71 can protect the threaded connection pipe 9 from being exposed to the external environment, so that the threaded connection pipe 9 is prevented from being polluted by dust and impurities for a long time.

[0034] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that includes a list of elements not only includes those elements, but also includes other elements not explicitly listed, or inherent to such a process, method, article, or apparatus.

[0035] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A hemodiafiltration replacement fluid sampling device, comprising a sampling cartridge (1), characterized in that: The bottom end of the sampling cylinder (1) is fixedly mounted with a support cylinder (13), the top end of the sampling cylinder (1) is fixedly connected with a sampling port (8), the inner wall of the sampling port (8) is threadedly connected with a threaded connecting pipe (9), the outer wall of the sampling cylinder (1) is fixedly mounted with a second damping shaft (6), the top end of the sampling cylinder (1) is provided with a protective component (7), and one side of the outer wall of the support cylinder (13) is provided with a fixing component (5); The protective assembly (7) includes a protective cover (71) and a mounting shell (74), wherein the protective cover (71) is fixedly connected to the output end of the second damping shaft (6), a movable plate (76) is movably inserted into the inner wall of the mounting shell (74), a spring (77) is fixedly installed between the movable plate (76) and the opposite side of the inner wall of the mounting shell (74), and a push block (75) is fixedly installed on one side of the outer wall of the movable plate (76), and one end of the outer wall of the push block (75) slides through the outer wall of the mounting shell (74); The fixing assembly (5) comprises a first damping rotating shaft (51), and a rotating plate (52) is fixedly mounted on the output end of the first damping rotating shaft (51).

2. A hemodiafiltration substitution fluid sampling device according to claim 1, characterized in that: The mounting shell (74) is fixedly connected to the sampling cylinder (1); an L-shaped plate (78) is fixedly mounted on the outer wall of the movable plate (76); a beveled block (79) is fixedly mounted on the outer wall of the L-shaped plate (78); a connecting plate (72) is fixedly mounted on the outer wall of the protective cover (71); a snap-on shell (73) is fixedly mounted on the bottom end of the connecting plate (72); and the snap-on shell (73) matches the beveled block (79).

3. A hemodiafiltration substitution fluid sampling device according to claim 1, characterized in that: A pull rod (2) is slidably passed through the bottom end of the sampling tube (1), a piston (3) is fixedly installed on the top end of the pull rod (2), and the piston (3) is slidably connected to the inner wall of the sampling tube (1). A pull plate (4) is fixedly installed on the bottom end of the pull rod (2), and two slide grooves (11) are provided through the outer wall of the support tube (13). The pull plate (4) passes through the inner walls of the two slide grooves (11), and a support plate (12) is fixedly installed on the bottom end of the support tube (13).

4. A hemodiafiltration substitution fluid sampling device according to claim 3, characterized in that: The bottom end of the first damping shaft (51) is fixedly connected to the support plate (12), and a group of slots (53) are evenly distributed through the outer wall of the rotating plate (52).

5. A hemodiafiltration substitution fluid sampling device according to claim 1, characterized in that: A one-way diaphragm (10) is fixedly mounted on the inner wall of the threaded connecting pipe (9), and a thread groove is provided on the inner wall of the top end of the threaded connecting pipe (9).

6. A hemodiafiltration substitution fluid sampling device according to claim 1, characterized in that: The outer wall of the sampling cylinder (1) is provided with a transparent observation window (14), and the outer wall of the transparent observation window (14) is provided with scale lines.

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