Disposable tee manifold valve
By using a rotating connection design between the three-way pipe and the extension pipe, and a straight-line passage, the problem of liquid residue in medical three-way valves is solved, achieving stable fluid switching and sealing, reducing the risk of contamination, and improving the ease of use and reliability of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PAITE (BEIJING) TECH CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-07-10
AI Technical Summary
Existing disposable medical three-way valves are prone to leaving liquid residues during liquid transmission, leading to the mixing of liquids of different properties and causing contamination. This may affect the efficacy of the medication or cause medical accidents, especially when two liquids pass through continuously.
The design employs a tee pipe and extension pipe rotating connection, combined with a straight passage and sealing ring, to achieve flexible fluid switching and sealing, avoiding liquid residue.
It achieves stable flow and uniform flow rate of fluid when switching between different channels, reduces turbulence and pressure loss, improves sealing performance, reduces production costs and enhances structural strength.
Smart Images
Figure CN224474618U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of valve technology, and in particular to a one-time three-way valve assembly. Background Technology
[0002] In the medical field, disposable medical three-way valves are widely used in various liquid transfer scenarios. Currently, the liquid lines in the rotary structure of commercially available disposable medical three-way valves generally adopt a "T"-shaped passage design. Although this structure can achieve basic diversion and merging functions in conventional liquid transfer operations, it has a significant drawback.
[0003] During fluid transport, due to the structural characteristics of the "T"-shaped pathway, trace amounts of fluid inevitably remain in the closed branches. In general medical procedures, these trace amounts of residual fluid may not significantly affect the therapeutic effect. However, in certain special applications, its drawbacks become apparent. For example, when two fluids of different properties need to be transported consecutively, the residual fluid from the first fluid in the closed branch can mix with the second fluid, thus contaminating it. This contamination may alter the original chemical properties and efficacy of the second fluid, and in severe cases, may even lead to medical accidents, posing a potential threat to the patient's health. Utility Model Content
[0004] To reduce the amount of residual medicine in the three-way valve, this application provides a disposable three-way valve assembly.
[0005] The disposable three-way valve provided in this application adopts the following technical solution:
[0006] A disposable three-way valve assembly includes a three-way pipe and a base. An extension pipe is fixedly connected to the base. The three-way pipe is sleeved and rotatably connected to the extension pipe. A three-way disc is fixedly connected inside the extension pipe. A straight passage is formed on the three-way disc, and the straight passage can communicate with two passages in the three-way pipe.
[0007] By adopting the above technical solution, the disposable three-way valve can achieve flexible switching of fluid in different directions. Specifically, the rotating connection design between the three-way pipe and the extension pipe, combined with the straight passage on the three-way disc, allows users to selectively connect two passages in the three-way pipe by rotating the three-way pipe, thereby realizing the flow or blockage of fluid between different pipes. The operation is simple and the structure is compact. At the same time, when two liquids pass through continuously, there is no residue of the first liquid, thus reducing the possibility of contamination of the second liquid.
[0008] Optionally, when the straight passage is connected to two passages in the three-way pipe, the angle between the straight passage and the two passages in the three-way pipe that are on the same straight line is 120 degrees.
[0009] By adopting the above technical solutions, it can be ensured that the fluid has a more stable flow direction and a more uniform flow distribution when switching between different channels, effectively reducing the turbulence and pressure loss generated during the switching process.
[0010] Optionally, a water-stop groove is provided on the upper outer wall of the extension tube, and a sealing ring is fitted inside the water-stop groove, with the sealing ring abutting against the inner wall of the tee tube.
[0011] By adopting the above technical solution, the leakage of liquid from the gap between the tee pipe and the extension pipe can be effectively prevented through the water-stop groove and the sealing ring, thereby improving the sealing performance and reliability of the device.
[0012] Optionally, the tee includes a sleeve, a first outlet pipe, an inlet pipe, and a second outlet pipe. The first outlet pipe, the inlet pipe, and the second outlet pipe are all fixedly connected to and communicate with the sleeve. The sleeve is fitted onto the extension pipe and rotatably connected to the extension pipe.
[0013] By adopting the above technical solution, this structural design allows the tee pipe to rotate flexibly around the extension pipe, thereby facilitating the adjustment of the connection status of each passage and improving the convenience and flexibility of use.
[0014] Optionally, the lower part of the base is provided with a first groove.
[0015] By adopting the above technical solution, the first groove at the bottom of the base can reduce the overall weight of the base and reduce the amount of material used, thereby reducing production costs.
[0016] Optionally, multiple reinforcing protrusions are provided on the side walls around the base, and the bottom surface of the reinforcing protrusions is at the same height as the bottom surface of the base.
[0017] By adopting the above technical solution, multiple reinforcing bosses are set on the four side walls of the base, which can significantly enhance the structural strength of the base and effectively prevent the base from deforming or being damaged by external forces during use. The bottom surface of the reinforcing bosses is at the same height as the bottom surface of the base, making the entire device more stable when placed, while improving the uniformity of force between the base and the contact surface, and further extending the service life of the base.
[0018] Optionally, the ground of the reinforcing boss is provided with a second groove.
[0019] By adopting the above technical solutions, the amount of materials used can be effectively reduced, production costs can be lowered, and the overall weight can be reduced while ensuring structural strength.
[0020] Optionally, a ring pipe is fixedly connected to the end of the first water outlet pipe away from the tee pipe, and a swirl groove is formed on the outer wall of the ring pipe.
[0021] By adopting the above technical solution, this design enables the sleeve to be quickly connected and fixed to external connectors via a swivel groove, improving the convenience and reliability of the connection. Simultaneously, the swivel groove design enhances the sealing performance at the connection point, effectively preventing liquid leakage.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. It can realize the flow or blockage of fluid between different pipes. It is easy to operate and has a compact structure. At the same time, when two liquids pass through continuously, there is no residue of the first liquid, thereby reducing the possibility of contamination of the second liquid.
[0024] 2. It can ensure a more stable flow direction and a more uniform flow distribution when the fluid switches between different channels, effectively reducing turbulence and pressure loss generated during the switching process;
[0025] 3. It can effectively reduce the amount of materials used, lower production costs, and reduce the overall weight while ensuring structural strength. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;
[0027] Figure 2 This is a schematic diagram of the structure of a linear pathway according to an embodiment of this application;
[0028] Figure 3 This is a schematic diagram of the sealing ring according to an embodiment of this application.
[0029] In the diagram, 1. T-pipe; 11. Sleeve; 12. First outlet pipe; 13. Second outlet pipe; 14. Inlet pipe; 2. Base; 21. First groove; 3. Extension pipe; 31. Water stop groove; 32. Sealing ring; 4. T-plate; 41. Straight passage; 5. Reinforcing boss; 51. Second groove; 6. Ring pipe; 61. Rotary groove. Detailed Implementation
[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail below.
[0031] An embodiment of this application is: a one-time three-way valve, as described above. Figure 1 and Figure 2 The system includes a three-way pipe 1 and a base 2. An extension pipe 3 is fixedly connected to the base 2, and the extension pipe 3 is integrally formed with the base 2. The three-way pipe 1 includes a sleeve 11, a first outlet pipe 12, an inlet pipe 14, and a second outlet pipe 13. The first outlet pipe 12, the inlet pipe 14, and the second outlet pipe 13 are all fixedly connected to and communicate with the sleeve 11. The sleeve 11 is fitted onto the extension pipe 3 and is rotatably connected to the extension pipe 3. Thus, the three-way pipe 1 is rotatably connected to the extension pipe 3 through its own sleeve 11. The first outlet pipe 12, the inlet pipe 14, and the second outlet pipe 13 form the passage of the three-way pipe 1.
[0032] Reference Figure 1 , Figure 2 and Figure 3 The extension tube 3 is fixedly connected to a three-way plate 4. A straight passage 41 is opened on the three-way plate 4. The straight passage 41 is at the same height as each passage in the three-way tube 1 and the straight passage 41 can connect with two passages in the three-way tube 1.
[0033] The straight passage 41 can be connected to the passage in the three-way pipe 1 by rotating the three-way pipe 1. When the straight passage 41 is connected to the two passages in the three-way pipe 1, the angle between the straight passage 41 and the two passages in the three-way pipe 1 that are on the same straight line is 120 degrees.
[0034] To reduce the possibility of liquid overflowing from the gap between the outer wall of the extension tube 3 and the inner wall of the sleeve 11, a water-stop groove 31 is provided on the upper outer wall of the extension tube 3. A sealing ring 32 is fitted inside the water-stop groove 31. The sealing ring 32 abuts against the inner wall of the tee tube 1 and seals the gap between the outer wall of the extension tube 3 and the inner wall of the sleeve 11.
[0035] A first groove 21 is formed in the lower part of the base 2. Multiple reinforcing protrusions 5 are provided on the side walls around the base 2. In this embodiment, four reinforcing protrusions 5 are provided, and the four reinforcing protrusions 5 are equidistantly arranged around the axis of the base 2. The bottom surface of the reinforcing protrusions 5 is at the same height as the bottom surface of the base 2. A second groove 51 is formed in the ground of the reinforcing protrusions 5.
[0036] To facilitate the quick connection of the first water pipe and the second water outlet pipe 13, a ring pipe 6 is fixedly connected to the end of the first water outlet pipe 12 away from the tee pipe 1, and a swirl groove 61 is provided on the outer wall of the ring pipe 6.
[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A disposable three-way valve, characterized in that, It includes a three-way pipe (1) and a base (2). An extension pipe (3) is fixedly connected to the base (2). The three-way pipe (1) is sleeved and rotatably connected to the extension pipe (3). A three-way disc (4) is fixedly connected inside the extension pipe (3). A straight passage (41) is opened on the three-way disc (4). The straight passage (41) can communicate with two passages in the three-way pipe (1).
2. The disposable three-way valve according to claim 1, characterized in that, When the straight passage (41) is connected to two passages in the three-way pipe (1), the angle between the straight passage (41) and the two passages in the three-way pipe (1) that are on the same straight line is 120 degrees.
3. The disposable three-way valve according to claim 1, characterized in that, The upper outer wall of the extension pipe (3) is provided with a water-stop groove (31), and a sealing ring (32) is provided inside the water-stop groove (31). The sealing ring (32) abuts against the inner wall of the three-way pipe (1).
4. The disposable three-way valve according to claim 1, characterized in that, The three-way pipe (1) includes a sleeve (11), a first outlet pipe (12), an inlet pipe (14), and a second outlet pipe (13). The first outlet pipe (12), the inlet pipe (14), and the second outlet pipe (13) are all fixedly connected to and communicate with the sleeve (11). The sleeve (11) is sleeved on the extension pipe (3) and rotatably connected to the extension pipe (3).
5. The disposable three-way valve according to claim 1, characterized in that, The base (2) has a first groove (21) at its lower part.
6. The disposable three-way valve according to claim 1, characterized in that, Multiple reinforcing protrusions (5) are provided on the side walls around the base (2), and the bottom surface of the reinforcing protrusions (5) is at the same height as the bottom surface of the base (2).
7. The disposable three-way valve according to claim 6, characterized in that, The bottom surface of the reinforcing boss (5) is provided with a second groove (51).
8. The disposable three-way valve according to claim 4, characterized in that, The end of the first water outlet pipe (12) away from the three-way pipe (1) is fixedly connected to a ring pipe (6), and a swirl groove (61) is provided on the outer wall of the ring pipe (6).