Plugging type medicine filling valve structure

Abstract

The utility model discloses a plugging type medicine filling valve structure which comprises a long pipe and a short pipe connected with the middle of the long pipe. A supporting channel part is arranged on the inner wall of the short pipe, and the supporting channel part comprises a supporting table and a channel groove which is formed in the supporting table and is annularly distributed; the channel grooves comprise horizontal grooves and wall grooves which are transversely and vertically arranged, the wall grooves are communicated with the horizontal grooves, the channel grooves are provided with through holes in the middle of the supporting table, and the multiple horizontal grooves are converged to the middle of the supporting table and are communicated with the through holes; and the top cover structure is assembled on the short pipe. Through the material and shape characteristics of the blocking piece, the blocking piece is arranged on the supporting channel part, located on the lower side of the top cover structure and used for blocking the injection port, the safe and rapid injection process of medicine in a circulation pipeline is achieved under the condition that circulation of the long pipe is not affected, and due to the design, the safety of the long pipe is improved. And the leakage problem caused by sudden pressure increase of the circulating pipeline is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, in particular to a blocking type medicine filling valve structure. Background Art

[0002] As an extracorporeal blood circulation circuit used in conjunction with hemodialyzers, hemodiafiltration devices, and hemofilters, the drug filling valve plays an irreplaceable role. However, it also has the following disadvantages during daily use:

[0003] There are obvious deficiencies in safety. Since the extracorporeal circulation pipeline is always in working condition, it is particularly important to prevent blood from leaking out of the circulation pipeline, to ensure sealed connections, and to ensure safe filling of drug solution. Therefore, a blocking drug filling valve structure is provided. Utility Model Content

[0004] The purpose of the utility model is to provide a blocking type drug filling valve structure. Through the material and shape characteristics of the blocking piece itself, it is placed on the supporting channel part and on the lower side of the top cover structure and is used to block the injection port. Without affecting the circulation of the long tube, a safe and fast filling process of the drug in the circulation pipeline is realized. Moreover, this design overcomes the leakage problem caused by the sudden pressure increase in the circulation pipeline.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blocking type drug filling valve structure, comprising: a long tube, and a short tube connected to the middle part of the long tube; a supporting channel portion is arranged on the inner wall of the short tube, and the supporting channel portion comprises a supporting platform, and channel grooves arranged on the supporting platform and distributed in an annular manner; the channel grooves comprise horizontal grooves and wall grooves arranged in transverse and vertical directions, and the wall grooves are connected to the horizontal grooves, and a through hole is arranged in the middle part of the supporting platform, and a plurality of the horizontal grooves converge to the middle part of the supporting platform and are connected to the through hole; and a top cover structure assembled on the short tube, the top cover structure comprises a cover plate, and an extension tube connected to the cover plate, a material injection channel is opened in the middle part of the extension tube, a step portion is arranged at the bottom of the material injection channel, a material injection port is opened in the middle part of the step portion, and the material injection port is connected to the material injection channel; and also comprises a blocking member, the blocking member is placed on the upper surface of the supporting channel portion and is close to the inner top of the cover plate and is used to block the channel where the material injection port is located.

[0006] Preferably, the cross section of the blocking member is an isosceles trapezoid, and the outer diameter of the bottom edge of the blocking member is equal to the inner diameter of the support platform.

[0007] Preferably, the end of the support platform close to the through hole is provided with a support column, and the top end of the extended portion of the support column is lower than the inner top of the blocking member.

[0008] Preferably, the cross section of the injection channel is an inverted isosceles trapezoid.

[0009] Preferably, the outer wall of the extension tube is provided with an external thread for adapting to an injection syringe.

[0010] Preferably, the bottom of the cover plate is provided with an inserting portion, an inserting groove opened at the top edge of the short tube, and a damping layer arranged on the outer wall of the inserting portion.

[0011] Preferably, the cross-sections of the plug-in portion and the plug-in groove are both provided with a wedge shape for quick assembly of the cover plate and the short tube.

[0012] Preferably, an injection tube is provided in the middle of the long tube, and guide blocks are provided at both ends of the injection tube, respectively, and the guide blocks are arranged in a center mirror image.

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

[0014] The utility model increases the pressure through the injection port and on the plugging piece, thereby forcing the plugging piece to deform and collapse downward. At this time, the plugging piece fails to seal the injection port, and the injected drug flows through the gap formed between the plugging piece and the cover plate to the surrounding wall grooves and horizontal grooves, and finally converges to the middle of the through hole and enters the long tube, thereby realizing the drug filling process in the circulation pipeline. After the drug filling is completed, due to the material and shape characteristics of the plugging piece itself, it is quickly reset and the injection port is sealed again. This design, through the material and shape characteristics of the plugging piece itself, is placed on the supporting channel part and on the lower side of the top cover structure and is used to seal the injection port. Without affecting the circulation of the long tube, a safe and fast filling process of the drug in the circulation pipeline is realized, and this design overcomes the leakage problem caused by the sudden pressure increase in the circulation pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the disassembled structure;

[0017] Figure 3 for Figure 1 Schematic diagram of the plane structure;

[0018] Figure 4 It is a three-dimensional disassembled structural schematic diagram of the utility model;

[0019] Figure 5 for Figure 4 Another perspective structural diagram of .

[0020] In the figure: 111, long tube; 112, injection tube; 113, guide block; 114, short tube; 115, plug-in groove; 211, support platform; 213, wall groove; 214, horizontal groove; 215, support column; 216, through hole; 311, blocking piece; 411, cover plate; 412, extension tube; 413, external thread; 414, injection port; 415, injection channel; 416, plug-in part; 417, step part. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Example 1

[0023] See also Figures 1 to 5 The utility model preferably provides a technical solution: a blocking type drug filling valve structure, comprising: a long tube 111, and a short tube 114 connected to the middle of the long tube 111; the inner wall of the short tube 114 is provided with a support channel portion, the support channel portion comprises a support platform 211, and channel grooves arranged on the support platform 211 in an annular shape; the channel grooves comprise horizontal grooves 214 and wall grooves 213 arranged horizontally and vertically, the wall grooves 213 and the horizontal grooves 214 are interconnected, and a through hole 216 is arranged in the middle of the support platform 211, and a plurality of horizontal grooves 214 converge to the middle of the support platform 211 and are connected to the through hole 216 6; and a top cover structure assembled on the short tube 114, the top cover structure includes a cover plate 411, and an extension tube 412 connected to the cover plate 411, a material injection channel 415 is opened in the middle of the extension tube 412, a step portion 417 is provided at the bottom of the material injection channel 415, a material injection port 414 is opened in the middle of the step portion 417, and the material injection port 414 is connected to the material injection channel 415; and also includes a plugging member 311, the plugging member 311 is placed on the upper surface of the supporting channel portion and is close to the inner top of the cover plate 411 and is used to plug the channel where the material injection port 414 is located, and the plugging member 311 is made of elastic rubber material.

[0024] In this application, a syringe structure with a blocking member 311 is provided, which is a three-way injection valve structure acting on a circulation pipeline, such as Figure 1 , 2As shown in Figure 3, the plugging member 311 is placed on the supporting channel portion and is located at the lower side of the top cover structure and is used to plug the injection port 414. Under the action of this structure, the long tube 111 is not affected in the flow condition due to the shielding and blocking of the plugging member 311. Moreover, under the further action of the shape and material of the plugging member 311, when the pressure in the long tube 111 increases, the action surface of the plugging member 311 is closely attached to the bottom of the injection port 414, and the sealing performance is further enhanced. When injecting drugs at the port of the injection channel 415, the injection drugs can be injected by syringe. When the drugs enter the injection channel 415 and the injection port 414 under the action of the piston thrust, Since the diameter of the injection port 414 is relatively small, the pressure acting on the plugging member 311 through the injection port 414 increases, thereby forcing the plugging member 311 to deform and collapse downward. At this time, the plugging member 311 fails to block the injection port 414, and the injected drug flows through the gap formed between the plugging member 311 and the cover plate 411 to the surrounding wall grooves 213 and horizontal grooves 214, and finally converges to the middle of the through hole 216 and enters the long tube 111, thus realizing the drug filling process in the circulation pipeline. After the drug filling is completed, due to the material and shape characteristics of the plugging member 311 itself, it quickly resets and blocks the injection port 414 again.

[0025] This design, through the material and shape characteristics of the sealing member 311 itself, is placed on the supporting channel portion and on the lower side of the top cover structure and is used to seal the injection port 414. Without affecting the circulation of the long tube 111, a safe and rapid filling process of the drug in the circulation pipeline is achieved. This design also overcomes the leakage problem caused by the sudden pressure increase in the circulation pipeline.

[0026] Furthermore, the cross section of the blocking member 311 is an isosceles trapezoid, and the outer diameter of the bottom side of the blocking member 311 is equal to the inner diameter of the support platform 211 .

[0027] The blocking member 311 is configured as an isosceles trapezoidal structure. Figure 1 , 2 As shown, firstly, the stability acting on the supporting channel portion is enhanced, and it is similar to a cover structure, which covers the supporting channel portion and blocks the injection port 414, bringing convenience to the injection of liquid medicine, and can also be quickly reset, and the safety of its own structure is further improved.

[0028] Furthermore, a support column 215 is disposed at the end of the support platform 211 close to the through hole 216 , and the top of the extended portion of the support column 215 is lower than the inner top of the blocking member 311 .

[0029] like Figure 1 , 2 As shown in FIG. 3 , under the action of a plurality of support columns 215 , when the blocking member 311 collapses downward to a certain extent, the support columns 215 can counter-support the collapsed portion of the blocking member 311 to prevent it from excessive deformation and difficulty in returning to its original position.

[0030] Furthermore, the cross section of the injection channel 415 is an inverted isosceles trapezoid. Under this design, Figure 3 As shown, by setting the cross-sectional shape of the injection channel 415, that is, gradually becoming thinner from top to bottom, the corresponding injection pressure increases, and when the blocking member 311 is in position, it is easier to cause it to collapse and deform, thereby completing the drug injection process.

[0031] Furthermore, the outer wall of the extension tube 412 is provided with an external thread 413 for fitting with an injection syringe, and the external thread 413 can be adapted to be connected with the internal thread of an existing syringe port.

[0032] Example 2

[0033] As another embodiment of the present invention, a plug-in portion 416 is disposed at the bottom of the cover plate 411 , a plug-in groove 115 is opened at the top edge of the short tube 114 , and a damping layer is disposed on the outer wall of the plug-in portion 416 .

[0034] In this embodiment, an assembly method for the cover plate 411 and the short tube 114 is provided, and the plug-in portion 416 and the plug-in groove 115 are used to quickly connect and assemble. The plug-in portion 416 and the plug-in groove 115 can improve the assembly speed and sealing. The damping layer arranged on the outer wall of the plug-in portion 416 can improve the tightness of the assembly position. In order to further ensure the assembly strength between the cover plate 411 and the short tube 114, preferably, an assembly hole is arranged in a ring shape on the top of the short tube 114, and assembly bolts are arranged on the cover plate 411.

[0035] Furthermore, the cross sections of the plug-in portion 416 and the plug-in groove 115 are both provided with a wedge shape for quick assembly of the cover plate 411 and the short tube 114 .

[0036] Example 2

[0037] As another embodiment of the present invention, an injection tube 112 is provided in the middle of the long tube 111 , and guide blocks 113 are respectively provided at both ends of the injection tube 112 , and the guide blocks 113 are arranged in a center mirror image.

[0038] like Figure 2 and 3 As shown, through the guide blocks 113 set at both ends of the injection tube 112, and the two guide blocks 113 are set as a center mirror image, when the blood in the long tube 111 flows from left to right, a vortex area is formed at the outlet position of the left guide block 113 and the inlet position of the right guide block 113 for mixing the drug and the blood.

[0039] 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 integral connection; it can be a mechanical connection, among which there are many ways of detachable installation, for example, it can be through the method of plug-in and snap-fit, and for example, through the method of bolt connection, etc.

[0040] 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 blocking type drug filling valve structure, characterized in that: include: A long tube (111), and a short tube (114) connected to the middle portion of the long tube (111); The inner wall of the short tube (114) is provided with a support channel portion, and the support channel portion comprises a support platform (211) and channel grooves arranged in an annular shape on the support platform (211); The channel groove comprises a horizontal groove (214) and a wall groove (213) arranged in a horizontal and vertical direction, the wall groove (213) and the horizontal groove (214) are connected to each other, and a through hole (216) arranged in the middle of the support platform (211), and a plurality of the horizontal grooves (214) converge to the middle of the support platform (211) and are connected to the through hole (216); and a top cover structure assembled on the short tube (114), the top cover structure comprising a cover plate (411) and an extension tube (412) connected to the cover plate (411), a material injection channel (415) being provided in the middle of the extension tube (412), a step portion (417) being provided at the bottom of the material injection channel (415), a material injection port (414) being provided in the middle of the step portion (417), and the material injection port (414) being connected to the material injection channel (415); It also includes a blocking piece (311), which is placed on the upper surface of the supporting channel portion and is in close contact with the inner top of the cover plate (411) and is used to block the channel where the injection port (414) is located.

2. The blocking type drug filling valve structure according to claim 1 is characterized in that: The cross section of the blocking member (311) is an isosceles trapezoid, and the outer diameter of the bottom edge of the blocking member (311) is equal to the inner diameter of the support platform (211).

3. The blocking type drug filling valve structure according to claim 1 is characterized in that: The end of the support platform (211) close to the through hole (216) is provided with a support column (215), and the top end of the extension portion of the support column (215) is lower than the inner top of the blocking member (311).

4. The blocking type drug filling valve structure according to claim 1 is characterized in that: The cross section of the injection channel (415) is an inverted isosceles trapezoid.

5. The blocking type drug filling valve structure according to claim 1 is characterized in that: The outer wall of the extension tube (412) is provided with an external thread (413) for fitting with an injection syringe.

6. The blocking type drug filling valve structure according to claim 1, characterized in that: The bottom of the cover plate (411) is provided with an inserting portion (416), an inserting groove (115) opened at the top edge of the short tube (114), and a damping layer arranged on the outer wall of the inserting portion (416).

7. The blocking type drug filling valve structure according to claim 6, characterized in that: The cross sections of the plug-in portion (416) and the plug-in groove (115) are both wedge-shaped, which is used for the quick assembly of the cover plate (411) and the short tube (114).

8. The blocking type drug filling valve structure according to claim 1, characterized in that: An injection tube (112) is arranged in the middle of the long tube (111), and guide blocks (113) are respectively arranged at both ends of the injection tube (112), and the guide blocks (113) are arranged in a central mirror image.

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