A blood purifier

Abstract

The utility model discloses a blood purifier, include: jar body, the opening is provided with in the end portion, sealing structure, including the rotation -stop shoulder, end cover and lock nut, the rotation -stop shoulder forms in the outside of jar body top, is provided with the locating buckle on the rotation -stop shoulder, the end cover is located jar body's top and shields the opening, and the lock nut is connected in the outside of jar body with screw thread, and one end of lock nut projects jar body and is formed with the compression ring, and the compression ring is pressed tightly in the end portion of jar body with end cover, and the other end of lock nut is provided with the locking groove, and the locating buckle is connected in the locking groove with cooperation, the utility model discloses the cooperation between locating buckle and locking groove can be used as the locking mark and the location when assembling, can limit end cover continue to rotate after installing in place, effectively prevent excessive rotation to end cover when assembling, reduce the loss cost that appears in the assembly process, and can prevent end cover loose, improve the sealing effect to jar body.

Description

Technical Field

[0001] This utility model relates to a medical device, and more particularly to a blood purifier. Background Technology

[0002] During hemodialysis, blood purifiers are frequently used, and an adsorption cap is installed at the end of the blood purifier to prevent outside air from entering the container, thereby reducing the risk of bloodborne infection. Currently, the adsorption cap is usually assembled manually or by automated equipment. Because there are no clear positioning marks or loosening mechanisms between the adsorption cap and the blood purifier itself, over-tightening can easily occur during the tightening process, leading to problems such as cracks and damage to the product. Therefore, there is an urgent need for a blood purifier that is easier to manufacture and assemble. Utility Model Content

[0003] The purpose of this invention is to provide a blood purifier to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A blood purifier includes: a tank body with an opening at one end; a sealing structure including an anti-rotation shoulder, an end cap, and a locking nut, wherein the anti-rotation shoulder is formed on the outer side of the top of the tank body, and a positioning buckle is provided on the anti-rotation shoulder; the end cap is located on the top of the tank body and covers the opening; the locking nut is threaded to the outer side of the tank body, one end of the locking nut protrudes from the tank body and forms a pressure ring, the pressure ring presses the end cap tightly against the end of the tank body; the other end of the locking nut is provided with a locking groove, and the positioning buckle is engaged in the locking groove.

[0006] This technical solution has at least the following beneficial effects: During assembly, the end cap is first placed at the opening of the tank end to block and seal the opening. Then, the sealing cap is threaded onto the outside of the tank end. At this time, the locking nut and the end cap combine to form an adsorption cap. The pressure ring at one end of the locking nut approaches and abuts against the end cap, pressing the end cap tightly against the end of the tank. Simultaneously, the locking nut approaches the anti-rotation shoulder on the outside of the tank, causing the positioning buckle on the anti-rotation shoulder to abut against the end of the end cap. As the end cap rotates, it gradually applies pressure to the positioning buckle, causing the anti-rotation shoulder to elastically deform. When the end cap is rotated until the locking groove is aligned with the positioning buckle, the positioning buckle enters the locking groove, and the anti-rotation shoulder elastically returns to its original position, making it difficult for the positioning buckle to come out of the locking groove. In this way, the cooperation between the positioning buckle and the locking groove can serve as a locking mark and positioning during assembly. It can restrict the end cap from continuing to rotate after it is installed in place, effectively preventing excessive rotation of the end cap during assembly, reducing the loss and cost incurred during assembly, and preventing the end cap from loosening, improving the sealing effect on the tank body. It also restricts the locking nut from being unscrewed again, effectively preventing the whole unit from being recycled.

[0007] As a further improvement to the above technical solution, the anti-rotation shoulder extends around the tank body, with the two ends of the anti-rotation shoulder spaced apart, and the positioning buckle is formed at either end of the anti-rotation shoulder.

[0008] As a further improvement to the above technical solution, the side of the positioning buckle facing the rotation direction of the locking nut is smoothly transitioned to the end face of the anti-rotation shoulder.

[0009] As a further improvement to the above technical solution, an annular step is provided on the outer edge of the side of the end cap facing the tank body, and the top of the tank body is fitted inside the annular step.

[0010] As a further improvement to the above technical solution, the middle part of the end cap protrudes in a direction away from the tank body to form a connecting mouth, and a sealing cap is detachably connected to the outside of the connecting mouth.

[0011] As a further improvement to the above technical solution, the sealing cap and the connecting nozzle are connected by a thread.

[0012] As a further improvement to the above technical solution, a sealing plug is formed on the inner top side of the sealing cap, and the sealing plug is inserted into the connecting nozzle.

[0013] As a further improvement to the above technical solution, the bottom side of the sealing cap is provided with multiple limiting slots, and the top side of the end cap is provided with limiting protrusions corresponding to the positions of the multiple limiting slots, and the multiple limiting protrusions are respectively connected to the multiple limiting slots.

[0014] As a further improvement to the above technical solution, a force-applying block is provided on the outer side of the end cap, and the force-applying block extends in a direction away from the center of the end cap.

[0015] As a further improvement to the above technical solution, the sealing structure is provided at both ends of the tank.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] Figure 1 This is an overall front view of the present invention.

[0019] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure.

[0020] Figure 3 This is a schematic diagram of the sealing structure and the explosion structure of the tank body of this utility model.

[0021] In the attached diagram: 100-tank body, 110-opening, 210-anti-rotation shoulder, 211-positioning buckle, 220-end cap, 221-connecting nozzle, 222-sealing cap, 223-sealing plug, 224-limiting protrusion, 225-force application block, 230-locking nut, 231-locking groove. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Reference Figure 1 , Figure 2 and Figure 3 A blood purification device includes a tank body 100 and a sealing structure. The tank body 100 has an opening 110 at one end. The sealing structure includes an anti-rotation shoulder 210, an end cap 220, and a locking nut 230. The anti-rotation shoulder 210 is formed on the outer side of the top of the tank body 100. The anti-rotation shoulder 210 can be integrally formed on the outer side of the tank body 100. A positioning buckle 211 is provided on the anti-rotation shoulder 210. Similarly, the positioning buckle 211 can also be integrally formed on the anti-rotation shoulder 210. In the structure on the 0, the end cap 220 is located on the top of the tank body 100 and covers the opening 110. The locking nut 230 is threaded to the outside of the tank body 100. One end of the locking nut 230 protrudes from the tank body 100 and forms a pressure ring. The pressure ring presses the end cap 220 tightly against the end of the tank body 100. The other end of the locking nut 230 is provided with a locking groove 231. The positioning buckle 211 is engaged and connected in the locking groove 231.

[0027] As described above, during assembly, the end cap 220 is first placed at the opening 110 at the end of the tank body 100 to seal the opening 110. Then, the sealing cap 222 is threaded onto the outside of the end of the tank body 100. At this time, the locking nut 230 and the end cap 220 combine to form an adsorption cap. The pressure ring at one end of the locking nut 230 approaches and abuts against the end cap 220, pressing the end cap 220 tightly against the end of the tank body 100. Simultaneously, the locking nut 230 approaches the anti-rotation shoulder 210 on the outside of the tank body 100, causing the positioning buckle 211 on the anti-rotation shoulder 210 to abut against the end of the end cap 220. As the end cap 220 rotates, it gradually applies pressure to the positioning buckle 211, causing the anti-rotation shoulder 210 to... The end cap 220 undergoes elastic deformation. When the locking groove 231 is aligned with the positioning buckle 211, the positioning buckle 211 enters the locking groove 231, and the anti-rotation shoulder 210 elastically recovers, making it difficult for the positioning buckle 211 to come out of the locking groove 231. In this way, the cooperation between the positioning buckle 211 and the locking groove 231 can be used as a locking mark and positioning during assembly. After the end cap 220 is installed in place, it can limit the end cap 220 from continuing to rotate, effectively preventing excessive rotation of the end cap 220 during assembly, reducing the loss cost during the assembly process, and preventing the end cap 220 from loosening again, improving the sealing effect of the tank 100, and limiting the locking nut 230 from being unscrewed again, effectively preventing the whole unit from being recycled.

[0028] When the locking nut 230 is rotated into position, it tends to abut against the anti-rotation shoulder 210. At this time, the locking nut 230 presses against the positioning buckle 211, requiring the anti-rotation shoulder 210 to elastically deform to avoid it. In order to facilitate the elastic deformation of the anti-rotation shoulder 210 when it is pressed, in this embodiment, the anti-rotation shoulder 210 extends around the tank body 100, and the two ends of the anti-rotation shoulder 210 are spaced apart. The positioning buckle 211 is formed at either end of the anti-rotation shoulder 210. At this time, the anti-rotation shoulder 210 is arranged in a ring shape, but the two ends are disconnected and not connected. At this time, a positioning buckle 211 is formed at one end of the anti-rotation shoulder 210. When the locking nut 230 presses against the positioning buckle 211, the end position of the anti-rotation shoulder 210 is more likely to be elastically deformed, thereby providing space to avoid the locking nut 230 from continuing to rotate. When the locking nut 230 rotates to the locking groove 231 being directly opposite the positioning buckle 211, the elastic recovery of the anti-rotation shoulder 210 can press the positioning buckle 211 back into the locking groove 231.

[0029] In order to facilitate the fitting of the positioning buckle 211 into the locking groove 231, in this embodiment, the side of the positioning buckle 211 facing the rotation direction of the locking nut 230 is smoothly transitioned to the end face of the anti-rotation shoulder 210. The side of the positioning buckle 211 facing the direction of rotation of the locking nut 230 and the end face of the anti-rotation shoulder 210 are set as arc surfaces to achieve a smooth transition. When the locking nut 230 rotates, especially when the locking nut 230 is in the locking groove 231 and just contacts the positioning buckle 211, even if the positioning buckle 211 and the locking groove 231 are facing each other, the anti-rotation shoulder 210 has no elastic deformation, and the degree of cooperation between the two is insufficient. As the locking nut 230 continues to rotate, the position of the locking nut 230 in the groove of the locking groove 231 can press against the arc surface and better pass over the positioning buckle 211. Thus, after the locking nut 230 continues to rotate one revolution, the positioning buckle 211 is then connected to the locking groove 231, improving the smoothness of the rotation of the locking nut 230 and the stability of the connection.

[0030] To improve the ease of placing the end cap 220 on the end of the can 100 and sealing the opening 110, in this embodiment, the end cap 220 has an annular step on the outer edge of one side facing the can 100, and the top of the can 100 is fitted within the annular step. Because the end cap 220 has the annular step, when the end cap 220 is placed on the end of the can 100, the end of the can 100 is fitted within the annular step. This combination allows for quick positioning of the end cap 220 on the end of the can 100 and improves the sealing performance of the end cap 220 on the opening 110.

[0031] The end cap 220 itself has a structure for connecting external instruments such as injection needles. Specifically, a connecting nozzle 221 is formed by protruding from the center of the end cap 220 in a direction away from the can body 100. A sealing cap 222 is detachably connected to the outside of the connecting nozzle 221. During assembly, the sealing cap 222 is connected to the connecting nozzle 221 to cover and seal the communication position of the connecting nozzle 221. During use, the sealing cap 222 is opened first, and then the injection needle or other instrument is inserted into the connecting nozzle 221.

[0032] There are various ways to connect the sealing cap 222 and the connecting nozzle 221, such as a snap-fit ​​connection. However, in this embodiment, the sealing cap 222 and the connecting nozzle 221 are connected by a thread. The threaded connection allows for a secure connection or separation between the sealing cap 222 and the connecting nozzle 221, making it convenient to use.

[0033] Regarding the threaded connection between the sealing cap 222 and the connecting nozzle 221, an external thread can be provided on the outside of the connecting nozzle 221, and an internal thread can be provided on the inside of the sealing cap 222. In this case, the sealing cap 222 is threadedly connected to each other through the external and internal threads. To improve the sealing effect, a first threaded sleeve can be provided at intervals on the inner top side of the sealing cap 222, and a first annular gap is formed between the outer side of the first threaded sleeve and the inner side of the sealing cap 222. A second threaded sleeve is provided at intervals on the end cap 220 located outside the connecting nozzle 221, and a second annular gap is formed between the second threaded sleeve and the outer side of the connecting nozzle 221. The second threaded sleeve is inserted into the first annular gap, and the first threaded sleeve is inserted into the second annular gap. The first threaded sleeve and the second threaded sleeve are threadedly connected to each other.

[0034] To further improve the sealing effect of the sealing cap 222 on the connecting nozzle 221, in this embodiment, a sealing plug 223 is formed on the inner top side of the sealing cap 222, and the sealing plug 223 is inserted into the connecting nozzle 221. The sealing plug 223 is integrally formed with the sealing cap 222, which can improve production efficiency. Furthermore, the sealing plug 223 will age due to its characteristics after long-term use and cannot be repeatedly disassembled and reassembled from the sealing cap 222, effectively reducing the risk of recycling the sealing cap 222.

[0035] To prevent loosening after the sealing cap 222 is installed, in this embodiment, the bottom side of the sealing cap 222 is provided with multiple limiting grooves, and the top side of the end cap 220 is provided with limiting protrusions 224 corresponding to the positions of the multiple limiting grooves. The multiple limiting protrusions 224 are respectively connected to the multiple limiting grooves. The limiting protrusions 224 can be integrally formed on the top side of the end cap 220, such as a raised dot, while the bottom side of the end cap 220 is provided with limiting grooves that cooperate with the dot. When the sealing cap 222 is connected to the connecting nozzle 221, the bottom side of the sealing cap 222 tends to abut against the end cap 220. At this time, the multiple limiting protrusions 224 are respectively connected to the multiple limiting grooves, making it difficult for the sealing cap 222 to rotate relative to the end cap 220. When it is necessary to open the connecting nozzle 221, a large external force needs to be applied to the sealing cap 222 to make the limiting protrusions 224 cross the limiting grooves.

[0036] To facilitate applying external force to the end cap 220 and causing it to rotate, raised stripes can be provided on the outer side of the end cap 220. Multiple raised stripes are arranged around the end cap 220, thus increasing the friction when force is applied to the outer side of the end cap 220. Furthermore, a force-applying block 225 is provided on the outer side of the end cap 220, extending away from the center of the end cap 220. When it is necessary to rotate the end cap 220, the user's fingers can apply force to the force-applying block 225. Because the force-applying block 225 protrudes away from the center of the end cap 220, the user's fingers are less likely to slip when rotating the end cap 220, improving the ease of applying force.

[0037] The tank body 100 typically has openings 110 at both ends. The aforementioned sealing structure can be installed at one of these openings 110. However, in this embodiment, the sealing structure is installed at both ends of the tank body 100. By using two sealing structures to seal both ends of the tank body 100, the sealing performance of the openings 110 at both ends of the tank body 100 is improved.

[0038] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A blood purifier, characterized in that: include: The tank body (100) has an opening (110) at one end; The sealing structure includes an anti-rotation shoulder (210), an end cap (220), and a locking nut (230). The anti-rotation shoulder (210) is formed on the outer side of the top of the tank body (100). A positioning buckle (211) is provided on the anti-rotation shoulder (210). The end cap (220) is located on the top of the tank body (100) and covers the opening (110). The locking nut (230) is threaded to the outer side of the tank body (100). One end of the locking nut (230) protrudes from the tank body (100) and forms a pressure ring. The pressure ring presses the end cap (220) against the end of the tank body (100). The other end of the locking nut (230) is provided with a locking groove (231). The positioning buckle (211) is engaged in the locking groove (231).

2. The blood purifier according to claim 1, characterized in that: The anti-rotation shoulder (210) extends around the tank body (100), and the two ends of the anti-rotation shoulder (210) are spaced apart. The positioning buckle (211) is formed at either end of the anti-rotation shoulder (210).

3. A blood purifier according to claim 1, characterized in that: The side of the positioning buckle (211) facing the rotation direction of the locking nut (230) is smoothly transitioned to the end face of the anti-rotation shoulder (210).

4. A blood purifier according to claim 1, characterized in that: The end cap (220) has an annular step on the outer edge of one side facing the tank body (100), and the top of the tank body (100) is fitted inside the annular step.

5. A blood purifier according to claim 1, characterized in that: The end cap (220) has a connecting nozzle (221) protruding from the center in a direction away from the tank body (100), and a sealing cap (222) is detachably connected to the outside of the connecting nozzle (221).

6. A blood purifier according to claim 5, characterized in that: The sealing cap (222) and the connecting nozzle (221) are threaded together.

7. A blood purifier according to claim 5, characterized in that: A sealing plug (223) is formed on the inner top side of the sealing cap (222), and the sealing plug (223) is inserted into the connecting nozzle (221).

8. A blood purifier according to claim 5, characterized in that: The bottom side of the sealing cap (222) is provided with multiple limiting slots, and the top side of the end cap (220) is provided with limiting protrusions (224) corresponding to the positions of the multiple limiting slots. The multiple limiting protrusions (224) are respectively connected to the multiple limiting slots.

9. A blood purifier according to claim 5, characterized in that: A force-applying block (225) is provided on the outer side of the end cap (220), and the force-applying block (225) extends in a direction away from the center of the end cap (220).

10. A blood purifier according to claim 1, characterized in that: The sealing structure is provided at both ends of the tank (100).

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