Detachable multi-stage precision filtration infusion device

Abstract

This utility model discloses a detachable multi-stage precision filter infusion set, applied in the field of drug injection technology. It includes two droppers, with opposite ends of each dropper connected to a puncture tube and an infusion tube, respectively. A connecting shell is movably connected to the opposite ends of the two droppers. A filter structure, comprising four metal blocks, is mounted on the connecting shell. The surfaces of the metal blocks are slidably connected to the inner cavity of the connecting shell. Two limiting shells are fitted onto the surface of the infusion tube. When the user needs to heat the infusion solution, the user fits the two limiting shells onto the infusion tube, inserts the heating block into the inner cavity of the limiting shell using a positioning plate, and fixes the position of the limiting shell on the surface of the infusion tube using a positioning structure. Then, the user rotates the slider within the locking structure, causing the locking rod to engage with the locking ring, thus fixing the position of the positioning structure on the surface of the limiting shell and completing the heating of the infusion solution.

Description

Technical Field

[0001] This utility model belongs to the field of drug injection technology, and specifically relates to a detachable multi-stage precision filtration infusion set. Background Technology

[0002] An infusion set is a medical device used for intravenous infusion. It mainly consists of a vein needle, protective cap, infusion tubing, drug solution filter, flow rate regulator, drip chamber, bottle stopper puncture device, air filter, etc. It introduces the drug solution from the infusion bottle or infusion bag into the human vein to achieve the purpose of drug therapy, replenishment of water and nutrition.

[0003] Currently, Chinese utility model patent CN213312421 U discloses an infusion set for chemotherapy drugs, including an infusion device and an infusion bag. The infusion device is fixedly connected to the bottom of the infusion bag. The infusion device includes a puncture component and a first tubing. One end of the first tubing is fixedly connected to the puncture component, and the other end of the first tubing is fixedly connected to a first Luer one-way valve. The puncture component includes a second tubing, a third tubing, a second Luer one-way valve, and a Luer puncture device. This utility model has a scientific and reasonable structure, is safe and convenient to use, and the infusion device and infusion bag can maintain good resilience after being squeezed. Furthermore, this infusion set can effectively protect chemotherapy drugs and prevent their decomposition. The anti-backflow design of the first and second Luer one-way valves can prevent backflow and reduce the workload of medical staff.

[0004] After use, a large amount of impurities will accumulate on the filter screen of this infusion set. If it is not disassembled, cleaned or replaced in time, it will cause the filter screen to become clogged, resulting in a decrease in the filtration effect of the filter screen on the medicine. In addition, it is impossible to heat the medicine in the infusion tube during use. The discomfort will be more obvious when injecting medicine in winter or when a large amount of medicine is infused. This may cause the patient to experience reactions such as chills and vasoconstriction during infusion, which is not conducive to the patient's treatment. Utility Model Content

[0005] The purpose of this invention is to provide a detachable multi-stage precision filter infusion set, which has the advantages of allowing for quick disassembly of the filter screen after use and heating of the infusion solution during infusion.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a detachable multi-stage precision filtration infusion set, comprising two droppers, characterized in that: the opposite ends of the two droppers are respectively connected to a puncture tube and an infusion tube; the opposite ends of the two droppers are movably connected to a connecting shell; a filter structure is installed on the connecting shell; the filter structure can be pulled out from one side of the connecting shell; two limiting shells are sleeved on the surface of the infusion tube; a heating block is provided in the inner cavity of the limiting shell; a positioning plate is fixedly installed on the front side of the two heating blocks; a positioning structure is fixedly connected to the rear side of the positioning plate; the positioning structure includes a positioning shell that is formed into a cylindrical shape by fastening; the inner cavity of the positioning shell is movably connected to the limiting shell; a locking structure is fixedly connected to the end of the limiting shell away from the positioning plate; a retaining structure is fixedly connected to both the front and rear sides of the connecting shell; the retaining structure includes a retaining ring; the inner cavity of the retaining ring is fixedly connected to the dropper.

[0007] Using the above technical solution: When the filter structure needs to be quickly disassembled after using the infusion set, the user can unplug the retaining plate in the retaining structure from the retaining ring surface that fixes the dropper by rotating it. The user can then remove the connecting tube for internal cleaning. If it is necessary to replace the components within the filter structure, the user moves the magnetic plate away from the connecting tube. The magnetic connection between the magnetic plate and the metal block moves the metal fiber filter, stainless steel filter, PTFE filter, and nylon filter away from the inner cavity of the connecting shell. Then, the user can replace the metal fiber filter and stainless steel filter... The PTFE and nylon filters can be replaced or removed, allowing for quick disassembly of the filter structure after use of the infusion set. When the user needs to heat the infusion solution, the user fits the two limiting shells with the infusion tube, places the heating block into the inner cavity of the limiting shell using the positioning plate, and fixes the position of the limiting shell on the surface of the infusion tube using the positioning structure. Then, the user rotates the slider in the locking structure to engage the locking rod with the locking ring, thus fixing the position of the positioning structure on the surface of the limiting shell and completing the heating of the infusion solution.

[0008] The present invention is further configured such that the filter structure includes a magnetic suction plate wrapped on the connecting shell, and four metal blocks are arranged at intervals along the axial direction at the bottom of the magnetic suction plate. The surface of the metal blocks is slidably connected to the inner cavity of the connecting shell, and metal fiber filter screen, stainless steel filter screen, polytetrafluoroethylene filter screen and nylon filter screen are fixed to the four metal blocks in sequence. The metal fiber filter screen, stainless steel filter screen, polytetrafluoroethylene filter screen and nylon filter screen are all inserted into the connecting shell through holes opened on one side.

[0009] The above technical solution allows for quick disassembly of the filter structure by using a combination of magnetic plates, metal blocks, metal fiber filters, stainless steel filters, polytetrafluoroethylene filters, and nylon filters. This enables users to quickly detach the metal fiber filters, stainless steel filters, polytetrafluoroethylene filters, and nylon filters from the connecting shell when they need to replace specific components.

[0010] The present invention is further configured such that positioning frames that can slide along their circumference are installed on both sides of the positioning shell, and knobs are movably connected to the front and rear sides of the positioning frames. A connecting rod is fixedly connected between the two knobs on opposite sides, and four fixing straps are sleeved on the surface of the connecting rod.

[0011] The above technical solution, by setting up a positioning shell, positioning frame, knob, connecting rod and fixing strap, can fix the position of the infusion tube when medical staff use the infusion tube to give infusion to the patient, and prevent the position of the infusion tube from deviating during the infusion process.

[0012] The present invention is further configured such that fixing plates are movably connected to both sides of the fixing belt, and a layered plate is fixedly connected between the opposite sides of the two fixing plates.

[0013] The above technical solution involves setting a fixing plate and a layered plate. When the user fixes the position of the infusion tube with the fixing strap, the fixing strap can be layered, making it easier for medical staff to fix the position of the infusion tube.

[0014] The present invention is further configured such that the locking structure includes two locking shells, the front side of the locking shell is fixedly connected to the limiting shell, the inner cavity of the locking shell is slidably connected to a locking block, the top of the front side of the locking block is fixedly connected to a locking rod, the front side of the locking rod is slidably connected to a locking ring, and the rear side of the locking ring is fixedly connected to the positioning shell.

[0015] The above technical solution, by using the combination of a locking shell, locking block, locking rod and locking ring, can fix the position of the positioning structure when the user fixes the position of the limiting shell on the surface of the infusion tube by using the positioning plate and positioning structure, thus preventing the positioning structure from shifting from the limiting shell during use.

[0016] The present invention is further configured such that the fixing structure includes a fixing shell, the inner cavity of the fixing shell is fixedly connected to the connecting shell, and a fixing plate is slidably connected to the opposite side of the two fixing shells, and the bottom of the fixing plate is engaged with the surface of the fixing ring.

[0017] The above technical solution involves the coordinated use of a retaining shell, a retaining plate, and a retaining ring. This reinforces the fixed position of the connecting shell between the two droppers when the dropper filters impurities in the liquid through the filter structure inside the connecting shell, preventing the connecting shell from detaching from the dropper during use.

[0018] The present invention is further configured such that a positioning plate is fixedly installed on each of the two retaining rings on opposite sides, and the surface of the positioning plate is slidably connected to the inner cavity of the retaining plate.

[0019] By adopting the above technical solution, the stability of the fixing plate when fixing the connecting shell and the dropper by the slider on the surface of the fixing ring can be increased, thus preventing the connecting shell and the dropper from falling off during use.

[0020] In summary, this utility model has the following beneficial effects:

[0021] 1. When the filter structure needs to be quickly disassembled after using the infusion set, the user can unplug the retaining plate in the retaining structure from the retaining ring surface of the drip tube by rotating it. Then, the user can take out the connecting tube and clean the inside. If it is necessary to replace the components in the filter structure, the user can move the magnetic plate away from the connecting tube. Through the magnetic connection between the magnetic plate and the metal block, the metal fiber filter, stainless steel filter, polytetrafluoroethylene filter and nylon filter can be moved away from the inner cavity of the connecting shell. Then, the metal fiber filter, stainless steel filter, polytetrafluoroethylene filter and nylon filter can be replaced or removed, thus completing the quick disassembly of the filter structure after using the infusion set.

[0022] 2. When the user needs to heat the infusion solution, the user will fit the two limiting shells with the infusion tube, place the heating block into the inner cavity of the limiting shell through the positioning plate, and fix the position of the limiting shell on the surface of the infusion tube through the positioning structure. Then, the user will rotate the slider in the locking structure to drive the locking rod to engage with the locking ring, thereby fixing the position of the positioning structure on the surface of the limiting shell and completing the heating of the infusion solution. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a right-side exploded view of a partial structure of this utility model;

[0025] Figure 3 This is a partial structural exploded view of this utility model;

[0026] Figure 4 This is a partial structural front view exploded view of this utility model;

[0027] Figure 5 This is an exploded view of the fixation structure of this utility model.

[0028] Reference numerals: 1. Dropper; 2. Puncture tube; 3. Infusion tube; 4. Connecting shell; 5. Filter structure; 501. Magnetic suction plate; 502. Metal block; 503. Metal fiber filter screen; 504. Stainless steel filter screen; 505. Polytetrafluoroethylene filter screen; 506. Nylon filter screen; 6. Limiting shell; 7. Heating block; 8. Positioning plate; 9. Positioning structure; 901. Positioning shell; 902. Positioning frame; 903. Knob; 904. Connecting rod; 905. Fixing strap; 906. Fixing plate; 907. Layered plate; 10. Locking structure; 1001. Locking shell; 1002. Locking block; 1003. Locking rod; 1004. Locking ring; 11. Retention structure; 1101. Retention shell; 1102. Retention plate; 1103. Retention ring; 1104. Locking plate. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Example 1:

[0031] refer to Figures 1-4 The detachable multi-stage precision filtration infusion set includes two droppers 1, with the opposite ends of the two droppers 1 connected to a puncture tube 2 and an infusion tube 3, respectively. The opposite ends of the two droppers 1 are movably connected to a connecting shell 4, and a filter structure 5 is installed on the connecting shell 4. The filter structure 5 can be pulled out from one side of the connecting shell 4.

[0032] Furthermore, the filter structure 5 includes a magnetic plate 501 encased on the connecting shell 4. Four metal blocks 502 are magnetically connected to the magnetic plate 501. The four metal blocks 502 are spaced apart along the axial direction at the bottom of the magnetic plate 501. The surface of the metal blocks 502 is slidably connected to the inner cavity of the connecting shell 4. Metal fiber filter screen 503, stainless steel filter screen 504, polytetrafluoroethylene filter screen 505, and nylon filter screen 506 are fixed to the four metal blocks 502 in sequence. The metal fiber filter screen 503, stainless steel filter screen 504, polytetrafluoroethylene filter screen 505, and nylon filter screen 506 are all inserted into the connecting shell 4 through holes opened on one side.

[0033] Furthermore, both ends of the connecting shell 4 are fixedly connected with a retaining structure 11. The retaining structure 11 includes a retaining ring 1103 fixed on the dropper 1 and a retaining shell 1101 fixed on the connecting shell 4. The retaining shell 1101 has an arc-shaped notch adapted to the retaining ring 1103, and a retaining plate 1102 is also provided on the retaining ring 1103. The retaining plate 1102 is engaged with the retaining ring 1103.

[0034] Furthermore, a positioning plate 1104 is fixedly installed on the opposite side of the retaining ring 1103, and the surface of the positioning plate 1104 is slidably connected to the inner cavity of the retaining plate 1102.

[0035] Brief description of usage: When the filter structure 5 needs to be quickly disassembled after using the infusion set, the user can unplug the retaining plate 1102 in the retaining structure 11 from the retaining ring 1103 fixed to the dropper 1 by rotating the retaining plate 1104. The user can then remove the connecting tube and clean its interior. If the components inside the filter structure 5 need to be replaced, the user moves the magnetic plate 501 away from the connecting tube. The magnetic connection between the magnetic plate 501 and the metal block 502 moves the metal fiber filter 503, stainless steel filter 504, polytetrafluoroethylene filter 505, and nylon filter 506 away from the inner cavity of the connecting shell 4. The user can then replace or remove these components, thus completing the quick disassembly of the filter structure 5 after use. 1. The combined use of metal block 502, metal fiber filter screen 503, stainless steel filter screen 504, polytetrafluoroethylene filter screen 505, and nylon filter screen 506 allows for quick disassembly of the connecting shell 4 when the user needs to replace specific components such as metal fiber filter screen 503, stainless steel filter screen 504, polytetrafluoroethylene filter screen 505, and nylon filter screen 506. The combined use of retaining shell 1101, retaining plate 1102, and retaining ring 1103 reinforces the fixed position of the connecting shell 4 between the two droppers 1 when the dropper 1 filters impurities in the medicine solution through the filter structure 5 within the connecting shell 4, preventing the connecting shell 4 from detaching from the dropper 1 during use. The locking plate 1104 increases the stability of the retaining plate 1102 when fixing the connecting shell 4 and the dropper 1 via the slider on the surface of the retaining ring 1103, preventing the connecting shell 4 and the dropper 1 from falling off during use.

[0036] Example 2:

[0037] refer to Figure 1 , Figure 2 and Figure 5A detachable multi-stage precision filtration infusion set includes an infusion tube 3. Two limiting shells 6 are fitted on the surface of the infusion tube 3. A heating block 7 is provided in the inner cavity of the limiting shell 6. A positioning plate 8 is fixedly installed on the front side of the two heating blocks 7. A positioning structure 9 is fixedly connected to the rear side of the positioning plate 8. The positioning structure 9 includes a positioning shell 901 formed into a cylindrical shape by fastening. The inner cavity of the positioning shell 901 is movably connected to the limiting shell 6. A locking structure 10 is fixedly connected to the end of the limiting shell 6 away from the positioning plate 8. A retaining structure 11 is fixedly connected to both the front and rear sides of the connecting shell 4. The retaining structure 11 includes a retaining ring 1103. The inner cavity of the retaining ring 1103 is fixedly connected to the dropper 1.

[0038] Furthermore, positioning frames 902 that can slide along their circumference are installed on both sides of the positioning housing 901. Rotatable knobs 903 are installed at both the front and rear ends of the positioning frame 902. A connecting rod 904 is connected between the two knobs 903, and four fixing straps 905 are sleeved on the surface of the connecting rod 904.

[0039] Furthermore, fixing plates 906 are provided on both sides of the fixing belt 905. The fixing plates 906 are rotatably mounted on the connecting rod 904, and a layered plate 907 is fixedly connected between the two fixing plates 906.

[0040] Furthermore, the locking structure 10 includes two locking shells 1001. The front side of the locking shell 1001 is fixedly connected to the limiting shell 6. The inner cavity of the locking shell 1001 is slidably connected to a locking block 1002. The top of the front side of the locking block 1002 is fixedly connected to a locking rod 1003. The front side of the locking rod 1003 is slidably connected to a locking ring 1004. The rear side of the locking ring 1004 is fixedly connected to the positioning shell 901.

[0041] Brief description of usage: When the user needs to heat the intravenous medication solution, the user fits the two limiting shells 6 with the infusion tube 3, pushes the heating block 7 into the inner cavity of the limiting shell 6 through the positioning plate 8, and fixes the position of the limiting shell 6 on the surface of the infusion tube 3 through the positioning structure 9. Then, the user rotates the slider in the locking structure 10 to drive the locking rod 1003 to engage with the locking ring 1004, thus fixing the position of the positioning structure 9 on the surface of the limiting shell 6, thereby completing the heating of the intravenous medication solution. By setting up the positioning shell 901, positioning frame 902, knob 903, connecting rod 904 and fixing strap 905, medical staff can use the infusion tube 3 to administer medication to patients. During intravenous infusion, the position of the infusion tube 3 is fixed to prevent it from shifting during the infusion process. By setting a fixing plate 906 and a layered plate 907, the fixing strap 905 can be layered when the user fixes the position of the infusion tube 3 using the fixing strap 905, making it easier for medical personnel to fix the position of the infusion tube 3. Through the coordinated use of the locking shell 1001, locking block 1002, locking rod 1003, and locking ring 1004, the position of the positioning structure 9 can be fixed when the user fixes the position of the limiting shell 6 on the surface of the infusion tube 3 using the positioning plate 8 and the positioning structure 9, preventing the positioning structure 9 from shifting from the limiting shell 6 during use.

[0042] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A detachable multi-stage precision filtration infusion set, comprising two droppers (1), characterized in that: Two droppers (1) are connected to a puncture tube (2) and an infusion tube (3) at opposite ends, respectively. A connecting shell (4) is movably connected to the opposite ends of the two droppers (1). A filter structure (5) is installed on the connecting shell (4), and the filter structure (5) can be pulled out from one side of the connecting shell (4). Two limiting shells (6) are fitted onto the surface of the infusion tube (3). A heating block (7) is installed inside the limiting shell (6), and a positioning plate (8) is fixedly installed on the front side of the two heating blocks (7). The positioning plate (8) The rear side is fixedly connected to a positioning structure (9), which includes a positioning shell (901) formed by fastening to form a cylindrical shape. The inner cavity of the positioning shell (901) is movably connected to the limiting shell (6). The end of the limiting shell (6) away from the positioning plate (8) is fixedly connected to a locking structure (10). The front and rear sides of the connecting shell (4) are both fixedly connected to a retaining structure (11), which includes a retaining ring (1103). The inner cavity of the retaining ring (1103) is fixedly connected to the dropper (1).

2. The detachable multi-stage precision filtration infusion set according to claim 1, characterized in that: The filter structure (5) includes a magnetic suction plate (501) wrapped on the connecting shell (4). Four metal blocks (502) are arranged at intervals along the axial direction at the bottom of the magnetic suction plate (501). The surface of the metal blocks (502) is slidably connected to the inner cavity of the connecting shell (4). The four metal blocks (502) are fixed with metal fiber filter screen (503), stainless steel filter screen (504), polytetrafluoroethylene filter screen (505), and nylon filter screen (506) in sequence. The metal fiber filter screen (503), stainless steel filter screen (504), polytetrafluoroethylene filter screen (505), and nylon filter screen (506) are all inserted into the connecting shell (4) through holes opened on one side.

3. The detachable multi-stage precision filtration infusion set according to claim 1, characterized in that: The positioning shell (901) is equipped with positioning frames (902) that can slide along its circumference on both sides. The front and rear sides of the positioning frame (902) are movably connected with knobs (903). A connecting rod (904) is fixedly connected between the two knobs (903) on opposite sides, and four fixing straps (905) are sleeved on the surface of the connecting rod (904).

4. The detachable multi-stage precision filtration infusion set according to claim 3, characterized in that: Both sides of the fixing band (905) are movably connected to fixing plates (906), and a layered plate (907) is fixedly connected between the opposite sides of the two fixing plates (906).

5. The detachable multi-stage precision filtration infusion set according to claim 1, characterized in that: The locking structure (10) includes two locking shells (1001). The front side of the locking shell (1001) is fixedly connected to the limiting shell (6). The inner cavity of the locking shell (1001) is slidably connected to a locking block (1002). The top of the front side of the locking block (1002) is fixedly connected to a locking rod (1003). The front side of the locking rod (1003) is slidably connected to a locking ring (1004). The rear side of the locking ring (1004) is fixedly connected to the positioning shell (901).

6. The detachable multi-stage precision filtration infusion set according to claim 1, characterized in that: The retention structure (11) includes a retention shell (1101), the inner cavity of which is fixedly connected to the connecting shell (4), and a retention plate (1102) is slidably connected to the opposite side of the two retention shells (1101), the bottom of which is engaged with the surface of the retention ring (1103).

7. The detachable multi-stage precision filtration infusion set according to claim 6, characterized in that: Two retaining rings (1103) are fixedly mounted with a positioning plate (1104) on opposite sides, and the surface of the positioning plate (1104) is slidably connected to the inner cavity of the retaining plate (1102).

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