Liquid medicine filling valve suitable for extracorporeal circulation pipeline

Abstract

The utility model discloses a liquid medicine filling valve suitable for an extracorporeal circulation pipeline, which relates to the technical field of valve bodies and comprises a three-way pipe body and a cover body structure assembled at the top of the three-way pipe body. The cover body structure comprises an extension pipe and a housing part communicated with the bottom of the extension pipe; a mounting ring, a plurality of runner holes formed in the circumferential direction of the mounting ring and a one-way plug body structure assembled in the mounting ring are arranged on the inner wall of the extension pipe; the one-way plug body structure comprises a plug body, an upper limiting part and a lower limiting part, wherein the upper limiting part and the lower limiting part are arranged on the top and the bottom of the plug body respectively. A first step part is formed by the lower surface of the upper limiting part and the outer wall of the plug body, and a plurality of elastic supporting columns are arranged on the first step part. According to the utility model, on the premise of not influencing the work of the extracorporeal circulation pipeline, the one-way plug body structure is arranged, so that the convenience is provided for filling medicines into the extracorporeal circulation pipeline, the design is safe, and the leakage risk is low.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, in particular to a liquid medicine filling valve suitable for an extracorporeal circulation pipeline. Background Art

[0002] Extracorporeal circulation circuits are generally composed of cannulas, connecting tubes, filters, etc. Extracorporeal circulation refers to the technology of using an artificial heart-lung machine to replace the functions of the heart and lungs, allowing blood to exchange fluids inside the extracorporeal circulation machine to complete extracorporeal circulation;

[0003] In normal use, drug mixing therapy is often required. In this process, how to achieve effective and safe mixing of blood and drug solution is a key step. For this purpose, a drug solution filling valve suitable for extracorporeal circulation pipeline is designed and provided. Utility Model Content

[0004] The purpose of the utility model is to provide a drug filling valve suitable for an extracorporeal circulation pipeline. Without affecting the operation of the extracorporeal circulation pipeline, the one-way plug structure is used to provide convenience for filling drugs into the extracorporeal circulation pipeline. At the same time, the design is safe and the risk of leakage is low.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drug filling valve suitable for an extracorporeal circulation pipeline, comprising: a three-way tube body, and a cover body structure assembled on the top of the three-way tube body; the cover body structure comprises an extension tube, and a cover shell portion connected to the bottom of the extension tube; a mounting ring is provided on the inner wall of the extension tube, a plurality of flow channel holes are opened in the circumferential direction of the mounting ring, and a one-way plug body structure is assembled in the mounting ring; the one-way plug body structure comprises a plug body, and an upper limit portion and a lower limit portion respectively arranged on the top and bottom of the plug body; the lower surface of the upper limit portion forms a first step portion with the outer wall of the plug body, a plurality of elastic support columns are arranged on the first step portion, the plug body passes through the middle part of the mounting ring, and the bottom of the elastic support column acts on the upper surface of the mounting ring; the upper surface of the lower limit portion forms a second step portion with the outer wall of the plug body, and the top edge of the second step portion acts on the lower surface of the mounting ring.

[0006] Preferably, an outer thread is provided on the upper portion of the outer wall of the extension tube for docking with the threaded opening at the end of the syringe.

[0007] Preferably, the three-way pipe body includes a filling pipe, and side branch pipes that pass through both sides of the filling pipe and are arranged laterally, the side branch pipes are connected to the filling pipe, inner diameter pipes are arranged on both sides of the side branch pipe, and flow limiting blocks are respectively arranged on the inner walls of the two inner diameter pipes, and a narrow and symmetrically distributed channel is formed between the two flow limiting blocks and the corresponding inner diameter pipes.

[0008] Preferably, a port is provided on the inner wall of the filling tube, and a cushion block is provided at the bottom of the filling tube, and the cushion block is arc-shaped.

[0009] Preferably, the top of the filling tube is opened at the insertion slot portion, the cross-section of the insertion slot portion is in a "U" shape, and an insertion ring portion is provided at the edge of the cover shell portion, and the insertion ring portion is adapted to the insertion slot portion.

[0010] Preferably, the diameter of the cover shell portion is larger than the diameter of the filling tube, and a sealing ring is provided at the bottom of the inner ring of the insertion ring portion.

[0011] Preferably, a damping layer is provided on the inner wall of the insertion ring portion and the outer wall of the filling tube.

[0012] Preferably, the number of the flow holes is four and is connected to the edge of the mounting ring.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] Through the arrangement of the three-way pipe body, the cover body structure and the one-way plug body structure, the present utility model is connected to the body position circulation pipeline through the three-way pipe body. The syringe is aligned with the top of the extension pipe for pressurized injection. At this time, under the action of the pressure on the upper part of the extension pipe, the upper limit part is forced to move downward and compress the elastic support column. At this time, the top edge of the second step part is separated from the lower surface of the mounting ring. Under the action of the flow holes, the communication between the extension pipe and the three-way pipe body is realized, and thus the injection of the drug can be completed. When the drug is not injected, the top edge of the second step part always closely adheres to the lower surface of the mounting ring, and the extension pipe and the three-way pipe body are in a non-connected state. This design provides convenience for filling drugs into the extracorporeal circulation pipeline by using the one-way plug body structure while not affecting the work of the extracorporeal circulation pipeline, and at the same time, the design is safe and the leakage risk is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the disassembled sectional structure schematic diagram of the present utility model;

[0016] Figure 2 is the sectional structure schematic diagram of the present utility model;

[0017] Figure 3 is the disassembled structure schematic diagram of the present utility model;

[0018] Figure 4 is the three-dimensional structure schematic diagram of the present utility model;

[0019] Figure 5 is Figure 2 the schematic diagram of another perspective structure;

[0020] Figure 6 is the wireframe structure schematic diagram of the present utility model;

[0021] Figure 7 It is a schematic diagram of the disassembled wireframe structure of the utility model.

[0022] In the figure: 111, side branch pipe; 112, inner diameter pipe; 113, flow limiting block; 114, cushion block; 115, port; 116, plug-in groove; 117, filling pipe; 211, lower limit portion; 212, second step portion; 213, upper limit portion; 214, elastic support column; 215, plug body; 311, cover shell; 312, external thread; 313, extension pipe; 314, mounting ring; 315, flow channel hole; 316, plug-in ring portion; 317, sealing ring. DETAILED DESCRIPTION

[0023] In the description of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. The following is a detailed description of various embodiments of the present utility model in conjunction with the drawings.

[0024] Example 1

[0025] See also Figures 1 to 7 The utility model preferably provides a technical solution: a drug liquid filling valve suitable for an extracorporeal circulation pipeline, comprising: a three-way pipe body, and a cover structure assembled on the top of the three-way pipe body; the cover structure comprises an extension pipe 313, and a cover shell portion 311 connected to the bottom of the extension pipe 313; the inner wall of the extension pipe 313 is provided with a mounting ring 314, a plurality of flow channel holes 315 arranged in the circumferential direction of the mounting ring 314, and a one-way plug body structure assembled in the mounting ring 314; the one-way plug body structure comprises a plug body 215, and two plug bodies 215 and 216 arranged on the plug body 215, respectively. The upper limit portion 213 and the lower limit portion 211 at the top and bottom of the body 215; the lower surface of the upper limit portion 213 and the outer wall of the plug body 215 form a first step portion, and a plurality of elastic support columns 214 are arranged on the first step portion. The plug body 215 passes through the middle part of the mounting ring 314, and the bottom of the elastic support column 214 acts on the upper surface of the mounting ring 314; the upper surface of the lower limit portion 211 and the outer wall of the plug body 215 form a second step portion 212, and the top edge of the second step portion 212 acts on the lower surface of the mounting ring 314.

[0026] In this application, a syringe structure based on an existing extracorporeal circulation pipeline is provided, and its main design is that it includes a three-way pipe body, a cover body structure and a one-way plug body structure. The three-way pipe body is connected to the body circulation pipeline, such as the hemodialysis pipeline, Figure 1 , 2 , 3 and 4, Figure 4 This is a schematic diagram of the working structure after assembly. Figure 2 for Figure 4 , when the cover structure and the three-way pipe body are assembled, the one-way plug structure is placed inside the extension pipe 313 and used to close its channel. Further, through the design of the one-way plug structure, under the action of the elastic support column 214 where the first step portion is located, the top edge of the second step portion 212 acts on the lower surface of the mounting ring 314 and is in close contact with it, as shown in FIG. Figure 2 As shown, under this design, when it is necessary to add drugs to the circulation pipeline, the syringe is aimed at the top of the extension tube 313 and pressurized injection is performed. At this time, under the action of the pressure on the upper part of the extension tube 313, the upper limit portion 213 is forced downward and compresses the elastic support column 214. At this time, the top edge of the second step portion 212 is separated from the lower surface of the mounting ring 314. Under the action of the flow channel hole 315, the connection between the extension tube 313 and the three-way tube body is achieved, thereby completing the injection of drugs. When the drug is not injected, the top edge of the second step portion 212 is always close to the lower surface of the mounting ring 314, and the extension tube 313 and the three-way tube body are in a disconnected state. This design, while not affecting the work of the extracorporeal circulation pipeline, utilizes the setting of the one-way plug body structure to provide convenience for the injection of drugs into the extracorporeal circulation pipeline. At the same time, the design is safe and has a low risk of leakage.

[0027] Furthermore, an external thread 312 is provided on the upper portion of the outer wall of the extension tube 313 for docking with the threaded opening at the end of the syringe. Figure 4 As shown, the further provided external thread 312 can be connected with the internal thread at the end of the syringe to achieve a fast and efficient medicine filling process.

[0028] Example 2

[0029] As another embodiment of the utility model, the three-way pipe body includes a filling pipe 117, and a side branch pipe 111 that passes through both sides of the filling pipe 117 and is laterally arranged. The side branch pipe 111 is connected to the filling pipe 117. Inner diameter pipes 112 are arranged on both sides of the side branch pipe 111, and flow limiting blocks 113 are respectively arranged on the inner walls of the two inner diameter pipes 112. A narrow and symmetrically distributed channel is formed between the two flow limiting blocks 113 and the corresponding inner diameter pipes 112.

[0030] In this embodiment, a structure of a three-way pipe body is provided, such as Figure 1 , 2As shown in FIGS. 6 and 7, through the flow-limiting block 113 on the inner wall of the inner diameter tube 112, a long and narrow and symmetrically distributed channel can be formed for the transverse circulation of circulating body fluid blood in the three-way pipe body and generating a swirling area. After the liquid medicine is filled into the filling tube 117, the entering liquid medicine can be mixed evenly with the swirling blood.

[0031] Furthermore, a port 115 is provided on the inner wall of the filling tube 117, and a cushion block 114 is provided at the bottom of the filling tube 117. The cushion block 114 is arc-shaped. Through the further provided cushion block 114, as Figure 1 、 6 shown, the height of the cushion block 114 gradually decreases towards the inlet and outlet positions of the flow-limiting block 113, which is convenient for the effective derivation of the above-mentioned mixed liquid and avoids the situation of corner retention.

[0032] Embodiment 3

[0033] As another implementation manner of the present utility model, a plug-in groove portion 116 is opened at the top of the filling tube 117. The cross-section of the plug-in groove portion 116 is in a "U" shape, and a plug-in ring portion 316 is provided at the edge of the cover shell portion 311. The plug-in ring portion 316 is adapted to the plug-in groove portion 116.

[0034] As Figure 1 shown, through the setting of the plug-in groove portion 116 and the plug-in ring portion 316, it is convenient for the cover shell portion 311 and the filling tube 117 to be quickly assembled.

[0035] Furthermore, the diameter of the cover shell portion 311 is larger than the diameter of the filling tube 117, and a sealing ring 317 is provided at the bottom of the inner ring of the plug-in ring portion 316.

[0036] As Figure 1 、 2 shown, when the cover shell portion 311 and the filling tube 117 are quickly assembled, through the sealing ring 317 provided at the bottom of the inner ring of the plug-in ring portion 316, it can act on the bottom of the plug-in groove portion 116, which can improve the connection sealing performance. At the same time, the outer ring of the plug-in ring portion 316 wraps around the outer wall of the filling tube 117, thereby further improving the connection sealing performance between the cover shell portion 311 and the filling tube 117

[0037] Furthermore, a damping layer is provided on the inner wall of the plug-in ring portion 316 and the outer wall of the filling tube 117. Further, through the provided damping layer, the connection strength between the two can be enhanced.

[0038] Embodiment 4

[0039] As other embodiments of the utility model, there are four flow channel holes 315, which are connected to the edge of the mounting ring 314. When the syringe is docked for drug injection and the extension tube 313 is connected to the filling tube 117, the number and annular distribution of the flow channel holes 315 facilitate the rapid entry of the drug solution into the filling tube 117.

[0040] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection. There are many ways of detachable installation, for example, it can be through the method of plug-in and snap-fit, or through the method of bolt connection, etc.

[0041] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A liquid medicine filling valve suitable for an extracorporeal circulation pipeline, characterized in that: Including: A three-way pipe body, and a cover structure assembled on the top of the three-way pipe body; The cover structure includes an extension pipe (313) and a housing part (311) communicating with the bottom of the extension pipe (313); An installation ring (314) is provided on the inner wall of the extension pipe (313), several flow channel holes (315) are opened in the circumferential direction of the installation ring (314), and a one-way plug structure is assembled in the installation ring (314); the one-way plug structure includes a plug body (215), and an upper limit part (213) and a lower limit part (211) respectively arranged on the top and bottom of the plug body (215); The lower surface of the upper limit part (213) and the outer wall of the plug body (215) form a first step part, and several elastic support columns (214) are arranged on the first step part. The plug body (215) penetrates through the middle of the installation ring (314), and the bottom of the elastic support column (214) acts on the upper surface of the installation ring (314); the upper surface of the lower limit part (211) and the outer wall of the plug body (215) form a second step part (212), and the top edge of the second step part (212) acts on the lower surface of the installation ring (314).

2. A drug solution filling valve suitable for an extracorporeal circulation circuit according to claim 1, characterized in that: An external thread (312) is provided on the upper part of the outer wall of the extension pipe (313) for docking with the threaded port at the end of the syringe.

3. A drug solution filling valve suitable for an extracorporeal circulation circuit according to claim 1, characterized in that: The three-way pipe body includes a filling pipe (117) and a side branch pipe (111) horizontally arranged through both sides of the filling pipe (117). The side branch pipe (111) is communicated with the filling pipe (117). Inner diameter pipes (112) are arranged on both sides of the side branch pipe (111), and flow limiting blocks (113) are respectively arranged on the inner walls of the two inner diameter pipes (112). Narrow and symmetrically distributed channels are formed between the two flow limiting blocks (113) and the corresponding inner diameter pipes (112).

4. A liquid medicine filling valve suitable for an extracorporeal circulation circuit according to claim 3, characterized in that: A port (115) is provided on the inner wall of the filling pipe (117), and a cushion block (114) is arranged at the bottom of the filling pipe (117). The cushion block (114) is arc-shaped.

5. The drug solution filling valve suitable for an extracorporeal circulation circuit according to claim 3, characterized in that: A plug-in groove part (116) is opened at the top of the filling pipe (117). The cross-section of the plug-in groove part (116) is in a "U" shape, and a plug-in ring part (316) is arranged at the edge of the housing part (311). The plug-in ring part (316) is adapted to the plug-in groove part (116).

6. A drug solution filling valve suitable for an extracorporeal circulation circuit according to claim 5, characterized in that: The diameter of the housing part (311) is larger than the diameter of the filling pipe (117), and a sealing ring (317) is arranged at the bottom of the inner ring of the plug-in ring part (316).

7. A liquid medicine filling valve suitable for an extracorporeal circulation circuit according to claim 5, characterized in that: A damping layer is arranged on the inner wall of the plug-in ring part (316) and the outer wall of the filling pipe (117).

8. The drug solution filling valve suitable for an extracorporeal circulation circuit according to claim 1, characterized in that: The number of the flow channel holes (315) is four, and they are connected to the edge of the installation ring (314).

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