High flow rate quick return positive pressure connector

Abstract

The utility model discloses a high flow rate fast rebound positive pressure connector, including three -way shell, silica gel capsule valve core, inner bag joint, elastic oblique muscle, three -way shell has liquid inlet, liquid outlet and bypass, the coaxial filling of silica gel capsule valve core has in liquid inlet, the inner wall between silica gel capsule valve core and three -way shell forms infusion channel, the liquid outlet encapsulation has inner bag joint, one end of silica gel capsule valve core links with inner bag joint, and the other end is blocked in liquid inlet, and the lateral wall of inner bag joint is equipped with the through -hole of connecting infusion channel. Through above -mentioned mode, the utility model provides a high flow rate fast rebound positive pressure connector, and the drainage canal that constructs through the deformation cooperation of elastic oblique muscle and silica gel capsule thin wall is used for realizing the improvement of flow rate, and the directional release of corresponding stress is realized using the distribution structure of the specific direction of elastic oblique muscle, thereby enhancing the response speed of positive pressure check, effectively eliminating blood reflux, and the reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of positive pressure connectors for medical infusion connections, and in particular to a high flow rate, fast rebound positive pressure connector. Background Technology

[0002] If the infusion set is not properly inserted or rotated into place when connecting it to the positive pressure connector, the silicone valve core may not be fully pushed open or may become twisted or deformed, affecting the flow of fluid. For example, abnormal deformation of the silicone valve core may cause most of the silicone valve core's retaining column to be twisted in the infusion channel within the positive pressure connector, affecting the infusion rate.

[0003] During the infusion process, the silicone valve core is subjected to compression and twisting, which creates internal stress. Therefore, after the infusion is completed, the stress affects the reset of the silicone valve core, resulting in leakage of the positive pressure environment. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a high-flow-rate, fast-rebound positive pressure connector. The flow rate is increased by constructing a drainage channel through the deformation cooperation between the elastic inclined ribs and the thin wall of the silicone capsule. The specific directional distribution structure of the elastic inclined ribs enables the directional release of the corresponding force, thereby enhancing the response speed of positive pressure backflow prevention, effectively preventing blood backflow, and ensuring high reliability.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a high-flow-rate, fast-rebound positive pressure connector, comprising a three-way housing, a silicone capsule valve core, an inner liner connector, and elastic ribs. The three-way housing has an inlet, an outlet, and a bypass port. A silicone capsule valve core is coaxially filled in the inlet, forming a delivery channel between the silicone capsule valve core and the inner wall of the three-way housing. The outlet is encapsulated with an inner liner connector. One end of the silicone capsule valve core is connected to the inner liner connector, and the other end is sealed in the inlet. The side wall of the inner liner connector has an opening for connecting the delivery channel. The silicone capsule valve core is tubular and has several elastic ribs on its outer wall, forming several thin walls of silicone capsules between the elastic ribs. The elastic ribs are used for rapid rebound.

[0006] In a preferred embodiment of this utility model, there are at least two elastic diagonal ribs, which are symmetrically distributed about the axis of the silicone capsule valve core.

[0007] In a preferred embodiment of this utility model, the upper and lower ends of the elastic inclined rib are provided with a gradually decreasing slope, and the slope guides and transmits torque.

[0008] In a preferred embodiment of this utility model, an integrally formed plug is provided at the end of the silicone capsule valve core. The plug is interference-fitted with the liquid inlet. An integrally formed horizontal node is provided at the upper end of the elastic inclined rib closest to the plug. The horizontal node is perpendicular to the axis of the silicone capsule valve core. The horizontal node is used to control the stress transmission direction, limit the deformation position, and control the position and size of the drainage channel.

[0009] In a preferred embodiment of this utility model, the outer wall of the silicone capsule valve core is provided with a valve plug portion, the inner wall of the three-way housing is provided with a bottleneck portion, the valve plug portion is sealed against the bottleneck portion, and the thickness of the elastic inclined rib does not exceed the thickness of the valve plug portion.

[0010] In a preferred embodiment of this utility model, the thickness directions of adjacent elastic inclined ribs form a pair of parallel spiral sidewalls. When the silicone capsule valve core is in a compressed state, the thin wall of the silicone capsule forms a plurality of spiral drainage channels constructed by the sidewalls along the direction of the elastic inclined ribs. The drainage channels are used to increase the flow rate.

[0011] The beneficial effects of this utility model are as follows: The high flow rate and fast rebound positive pressure connector provided by this utility model increases the flow rate by constructing a drainage channel through the deformation cooperation of the elastic inclined ribs and the thin wall of the silicone capsule. The specific directional distribution structure of the elastic inclined ribs realizes the directional release of the corresponding force, thereby enhancing the response speed of positive pressure backflow prevention, effectively preventing blood backflow, and ensuring high reliability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is an overall structural diagram of a preferred embodiment of a high-flow-rate, fast-rebound positive pressure connector of this utility model; Figure 2 This is a structural diagram of the silicone capsule valve core; Figure 3 This is another structural diagram of the silicone capsule valve core. Detailed Implementation

[0013] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] like Figures 1-3 As shown, the embodiments of this utility model include: A high-flow-rate, fast-rebound positive pressure connector includes a three-way housing 2, a silicone capsule valve core 1, an inner liner connector 3, and elastic inclined ribs 4. The three-way housing 2 has an inlet 5, an outlet 6, and a bypass port 7. The silicone capsule valve core 1 is coaxially filled in the inlet 5, and an infusion channel 8 is formed between the silicone capsule valve core 1 and the inner wall of the three-way housing 2. The outlet 6 is encapsulated with the inner liner connector 3. One end of the silicone capsule valve core 1 is connected to the inner liner connector 3, and the other end is sealed in the inlet 5. The inner liner connector 3 has a port 9 on its side wall for connecting to the infusion channel 8. The silicone capsule valve core 1 is tubular and has several elastic inclined ribs 4 on its outer wall. Several silicone capsule thin walls 100 are formed between the elastic inclined ribs 4. The elastic inclined ribs 4 are used for rapid rebound.

[0015] Among them, there are at least two elastic oblique ribs 4, which are symmetrically distributed about the axis of the silicone capsule valve core 1.

[0016] Furthermore, the upper and lower ends of the elastic inclined rib 4 are provided with a gradually decreasing slope 101, which guides and transmits torque.

[0017] Furthermore, the end of the silicone capsule valve core 1 is provided with an integrally formed plug 10, the plug 10 is interference-fitted with the liquid inlet 5, and the elastic inclined rib 4 is provided with an integrally formed horizontal node 11 at the upper end closest to the plug 10. The horizontal node 11 is perpendicular to the axis of the silicone capsule valve core 1. The horizontal node 11 is used to control the stress transmission direction, limit the deformation position, and control the position and size of the drainage channel.

[0018] Furthermore, the outer wall of the silicone capsule valve core 1 is provided with a valve plug portion 12, the inner wall of the three-way outer shell 2 is provided with a bottleneck portion 13, the valve plug portion 12 is sealed against the bottleneck portion 13, and the thickness of the elastic inclined rib 4 does not exceed the thickness of the valve plug portion 12.

[0019] Furthermore, the thickness directions of adjacent elastic inclined ribs 4 form a pair of parallel spiral sidewalls 14. When the silicone capsule valve core 1 is in a compressed state, the thin wall 100 of the silicone capsule forms a plurality of spiral drainage channels 15 constructed by the sidewalls 14 along the direction of the elastic inclined ribs 4. The drainage channels 15 are used to increase the flow rate.

[0020] like Figure 1As shown, the positive pressure connector has a thread 16 at its upper end. The needleless connector of the infusion set is tightened to connect to the thread 16. After tightening, the silicone capsule valve core 1 is pressed into the inner cavity of the tee housing 2, opening the valve structure. Because the oblique ribs are arranged in a centrally symmetrical manner, the entire silicone capsule valve core 1 undergoes directional spiral compression as the needleless connector is tightened. Due to the difference in elastic strength between the silicone capsule thin wall 100 and the oblique ribs, the silicone capsule thin wall 100 and the oblique ribs undergo different degrees of directional deformation, thus forming the drainage channel 15. Ordinary positive pressure connectors lack this structure. When the valve structure is opened, the entire silicone material undergoes irregular twisting, which will block most of the infusion channel 8, thus affecting the infusion flow rate. This product, however, with the addition of this structure, ensures that the drainage channel 15 does not decrease the infusion flow rate.

[0021] like Figure 2 As shown, the elastic diagonal rib 4 is used for rapid rebound. It covers both ends of the silicone capsule valve core 1 at a small acute angle (less than 30°) on the outer wall of the silicone capsule valve core 1. Because the rebound force of the elastic diagonal rib 4 is greater than that of the silicone capsule thin wall 100 (the thickness of the elastic diagonal rib 4 is greater than the thickness of the silicone capsule thin wall 100), the silicone capsule valve core 1 can quickly reset when the needleless connector is disconnected. The silicone core in ordinary positive pressure connectors lacks this structure, and the reset process of the silicone material is under stress, resulting in a slow closing speed of the valve structure and a large positive pressure leakage. This product releases stress axially through the diagonal rib, eliminating the stress in other directions during reset, and the reset speed is very fast.

[0022] When the valve body is locked to other infusion devices, the thin-walled silicone valve core, without the oblique rib structure, is easily deformed under axial pressure, enabling high-flow-rate infusion. When the locking connection is unscrewed, the oblique ribs help the capsule valve core quickly recover its deformation, creating positive pressure to force the medication inside the valve body into the body.

[0023] In summary, this utility model provides a high-flow-rate, fast-rebound positive pressure connector. The flow rate is increased by constructing a drainage channel 15 through the deformation cooperation between the elastic inclined rib 4 and the thin wall 100 of the silicone capsule. The specific directional distribution structure of the elastic inclined rib 4 is used to achieve directional release of the corresponding force, thereby enhancing the response speed of positive pressure backflow prevention, effectively preventing blood backflow, and ensuring high reliability.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-flow-rate, fast-rebound positive pressure connector, characterized in that, The device includes a three-way outer shell, a silicone capsule valve core, an inner liner connector, and elastic ribs. The three-way outer shell has an inlet, an outlet, and a bypass port. The silicone capsule valve core is coaxially filled inside the inlet, forming an infusion channel between the silicone capsule valve core and the inner wall of the three-way outer shell. The outlet is encapsulated with an inner liner connector. One end of the silicone capsule valve core is connected to the inner liner connector, and the other end is sealed at the inlet. The side wall of the inner liner connector has an opening for connecting to the infusion channel. The silicone capsule valve core is tubular and has several elastic ribs on its outer wall. Several thin walls of silicone capsules are formed between the elastic ribs, and the elastic ribs are used for rapid rebound.

2. The high-flow-rate fast-rebound positive pressure connector according to claim 1, characterized in that, There are at least two elastic diagonal ribs, which are symmetrically distributed about the axis of the silicone capsule valve core.

3. The high-flow-rate fast-rebound positive pressure connector according to claim 1, characterized in that, The upper and lower ends of the elastic inclined rib are provided with a gradually decreasing slope, which guides and transmits torque.

4. The high-flow-rate fast-rebound positive pressure connector according to claim 1, characterized in that, The end of the silicone capsule valve core is provided with an integrally formed plug, which is interference-fitted to the liquid inlet. The elastic inclined rib is provided with an integrally formed horizontal node at the upper end closest to the plug. The horizontal node is perpendicular to the axis of the silicone capsule valve core. The horizontal node is used to control the stress transmission direction, limit the deformation position, and control the position and size of the drainage channel.

5. The high-flow-rate fast-rebound positive pressure connector according to claim 1, characterized in that, The outer wall of the silicone capsule valve core is provided with a valve plug, and the inner wall of the three-way housing is provided with a bottleneck. The valve plug seals against the bottleneck, and the thickness of the elastic rib does not exceed the thickness of the valve plug.

6. The high-flow-rate fast-rebound positive pressure connector according to claim 1, characterized in that, The thickness direction of adjacent elastic inclined ribs forms a pair of parallel spiral sidewalls. When the silicone capsule valve core is in a compressed state, the thin wall of the silicone capsule forms multiple spiral drainage channels constructed by the sidewalls along the direction of the elastic inclined ribs. The drainage channels are used to increase the flow rate.

Images