A three-way connector and a mixing infusion set

Abstract

This invention relates to a three-way connector and a mixing infusion set, belonging to the field of medical device technology. It solves the technical problem of uneven distribution and release of drug components in the body due to drug stratification during infusion using existing multi-way connectors. The three-way connector includes a main inlet passage, a branch inlet passage, a mixing chamber, an outlet passage, and a mixing device. The mixing infusion set includes an infusion tube, a first puncture device, a second puncture device, and a three-way connector. The mixing impeller directly mixes the infusion fluid. When the infusion fluid flows to the mixing impeller, the impeller rotates on the rotating shaft bushing under force. Through this rotation, the impeller generates a stirring force, allowing infusion fluids of different densities to be fully mixed in the mixing chamber, breaking down the stratification between the fluids, and evenly distributing the stratified fluids, resulting in uniform drug mixing.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a three-way connector and a hybrid infusion set. Background Technology

[0002] In clinical medical practice, intravenous infusion plays a crucial role as a core technology for treating critically ill patients, conducting emergency medical interventions, and implementing long-term drug therapy. This is especially true for patients with complex conditions, whose treatment often involves the simultaneous infusion of multiple medications, including antibiotics, vasoactive drugs, nutritional support preparations, and blood products. Traditionally, intravenous infusion protocols relied on establishing multiple independent venous access points. This approach not only subjects patients to repeated puncture pain but also carries the potential risks of vascular trauma, increased infection risk, and complications such as thrombosis. Furthermore, in time-sensitive emergency situations, the time-consuming establishment of multiple venous access points can become a key factor hindering efficient resuscitation. To effectively reduce unnecessary punctures, the medical technology field has introduced the innovative solution of multi-port connectors. These connectors are commonly two- or three-port structures, allowing for the parallel infusion of multiple fluids through a single puncture to establish a venous access point, significantly optimizing the clinical infusion process.

[0003] When using a multi-port connector for infusion, differences in drug density exist between different infusion fluids. When these different infusion fluids come together, they may stratify and precipitate. Due to the stratification of the drug, the concentration of the effective drug components in each layer of the drug solution is different. This means that during the infusion process, the drug dosage cannot enter the patient's body in the expected accurate proportion and quantity. After the stratified precipitated drug solution enters the body, the drug components cannot be evenly distributed and released, causing fluctuations in the blood drug concentration and making it impossible to maintain a stable state. Consequently, the drug's therapeutic effect is unstable. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a three-way connector and a mixing infusion set to solve the technical problem that drug components cannot be evenly distributed and released in the body due to drug solution stratification during infusion using existing multi-way connectors.

[0005] The objective of this invention is mainly achieved through the following technical solutions:

[0006] In a first aspect, the present invention provides a three-way connector, including a main liquid inlet passage, a branch liquid inlet passage, a mixing chamber, a liquid outlet passage, and a mixing device. The main liquid inlet passage and the branch liquid inlet passage are both connected to the mixing chamber, the liquid outlet passage is connected to the mixing chamber, and the mixing device is disposed in the liquid outlet passage to mix the infused liquid.

[0007] Furthermore, a first check valve and a first flow regulating valve are provided on the main liquid inlet passage, with the first flow regulating valve located downstream of the first check valve.

[0008] Furthermore, a second check valve and a second flow regulating valve are provided on the branch inlet passage, with the second flow regulating valve located downstream of the second check valve.

[0009] Secondly, the present invention provides a hybrid infusion set, comprising an infusion tube, a first puncture device, a second puncture device, and the three-way connector described in the first aspect. The first puncture device is connected to one end of the infusion tube to puncture a liquid container, the second puncture device is connected to the other end of the infusion tube to puncture a human body, and the three-way connector is connected to the infusion tube and is close to the second puncture device.

[0010] Furthermore, the first puncture device includes a handle and a puncture needle, the handle being fitted onto the puncture needle for gripping with a finger.

[0011] Furthermore, the puncture needle includes a puncture needle body and an anti-leakage fluid assembly sleeved on the puncture needle body.

[0012] Furthermore, the anti-seepage fluid assembly includes a blade absorbent sleeve, which is disposed on the puncture needle body and close to the blade of the puncture needle body.

[0013] Furthermore, the anti-seepage component also includes a clamping anti-seepage sleeve, which is fitted onto the puncture needle body and can abut against the rubber stopper of the liquid container.

[0014] Furthermore, the second puncture device includes a puncture device receiving groove, which is fixedly disposed on the infusion tube to accommodate the second puncture device.

[0015] Furthermore, the puncture device receiving groove includes a receiving groove body, a puncture needle groove, and an elastic sealing clamp. The puncture needle groove is formed on the receiving groove body to serve as a receiving space for the second puncture device. The puncture needle groove is provided with an opening for inserting the second puncture device. The elastic sealing clamp is disposed at the opening of the puncture needle groove to prevent the second puncture device from falling out.

[0016] Furthermore, the mixing device includes a fixed rod, a rotating bushing, and a mixing impeller. The fixed rod is fixedly disposed within the liquid outlet passage, the rotating bushing is fixedly disposed inside the fixed rod, and the mixing impeller is disposed on the rotating bushing and is capable of rotating on the rotating bushing to mix the infused liquid.

[0017] Furthermore, the mixing impeller includes a stirring shaft and blades fixedly disposed on the stirring shaft. The stirring shaft passes through the rotating bushing and is rotatable within the rotating bushing.

[0018] Furthermore, the mixing device also includes a positioner, which is fixedly mounted on the fixed rod and sleeved on the mixing impeller to straighten the mixing impeller.

[0019] Furthermore, the impeller includes an impeller body and a mixing pile fixedly disposed on the impeller body.

[0020] Furthermore, the positioner includes an outer sleeve, an inner sleeve, and a sleeve rod. The sleeve rod is connected between the outer sleeve and the inner sleeve. The outer sleeve is fixedly mounted on the fixed rod. The mixing impeller passes through the inner sleeve and can rotate within the inner sleeve to straighten the mixing impeller.

[0021] Furthermore, the mixing chamber includes a mixing chamber body and a first flow channel, a second flow channel, and a third flow channel formed on the mixing chamber body. The first flow channel is connected to the main liquid inlet passage, the second flow channel is connected to the branch liquid inlet passage, and the third flow channel is connected to the liquid outlet passage.

[0022] Furthermore, a magnetic adhesive patch is provided in the puncture needle groove to attract the second puncture device.

[0023] The technical solution of this invention can achieve at least one of the following effects:

[0024] (1) The three-way connector of the present invention includes a main inlet passage, a branch inlet passage, a mixing chamber, an outlet passage, and a mixing device; the mixing device includes a fixed rod, a rotating bushing, and a mixing impeller. The fixed rod is fixedly installed in the outlet passage, the rotating bushing is fixedly installed inside the fixed rod, and the rotating bushing is provided with a through hole for liquid to pass through. The mixing impeller is installed on the rotating bushing and can rotate on the rotating bushing to mix the infused liquid; the mixing impeller directly mixes the infused liquid. When the infused liquid flows to the mixing impeller, the mixing impeller is subjected to force and rotates on the rotating bushing. The mixing impeller generates a stirring force through rotation, so that infused liquids of different densities are fully mixed in the mixing chamber, breaking the layered state between the liquids, distributing the layered liquids evenly, and mixing the drug solution evenly. Thus, the drug solution infused into the body can maintain a uniform distribution of components, thereby avoiding the technical problems of inaccurate drug dosage and unstable drug efficacy caused by drug layering and precipitation, and improving the accuracy and reliability of infusion therapy.

[0025] (2) The three-way connector of the present invention includes a mixing impeller comprising a blade body and a stirring pile fixedly disposed on the blade body. The blade body provides a basic mixing structure, and the stirring pile fixedly disposed on the blade body further enhances the mixing effect. By increasing the flow path and disturbance degree of the mixing liquid, the liquid forms a stronger vortex and mixing motion in the mixing chamber, promoting the full mixing of different liquids and improving the mixing uniformity.

[0026] (3) The mixing device of the three-way connector of the present invention also includes a positioner, which is sleeved on the mixing impeller to straighten the mixing impeller; by straightening and positioning the mixing impeller by the positioner, it is ensured that the mixing impeller can maintain a stable position and posture during rotation, and avoids the mixing impeller from shifting, shaking or tilting during liquid flow or stirring, thereby ensuring the stability and reliability of the stirring effect; in addition, the positioner can also reduce the wear between the mixing impeller and the rotating bushing, extend the service life of the stirring assembly, and also help maintain the stability of the stirring process.

[0027] (4) The three-way connector of the present invention includes a filter membrane, a support mesh and a fixed wall. The filter membrane is used to filter the infusion liquid. Through its microporous structure, it can effectively intercept tiny particles, impurities and precipitates in the infusion liquid, and only allow liquid and dissolved drug molecules to pass through, thereby ensuring the purity of the liquid infused into the patient's body, preventing adverse reactions caused by impurities entering the body, and ensuring the safety of the patient's infusion.

[0028] (5) The hybrid infusion set of the present invention includes a blade absorption sleeve for absorbing liquid that passes through the blade in the liquid container when the blade is inserted into the rubber stopper of the liquid container. As a result, the infusion liquid is difficult to pass through the blade of the puncture needle body and flow out along the puncture needle, thus avoiding leakage of infusion liquid during the insertion of the puncture needle.

[0029] (6) The hybrid infusion set of the present invention includes a puncture device receiving groove for the second puncture device. During the infusion process, when the second puncture device is not in use, it can be placed in the receiving groove to prevent it from shaking or being lost. At the same time, it avoids the risk of puncture injury to the human body caused by the tip of the puncture device being exposed. Thus, the puncture device can be kept out of the open, effectively avoiding puncture injury to medical staff or patients when the puncture device is not in use, reducing the risk of accidental injury and improving the safety of the infusion process.

[0030] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0031] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0032] Figure 1 This is a cross-sectional schematic diagram of the tee connector in Embodiment 1 of the present invention;

[0033] Figure 2 This is a schematic diagram of the mixing device in Embodiment 1 of the present invention;

[0034] Figure 3 This is a schematic diagram of the locator in Embodiment 1 of the present invention;

[0035] Figure 4 This is a schematic diagram of the mixing chamber in Embodiment 1 of the present invention;

[0036] Figure 5 This is a schematic diagram of the liquid infusion regulating valve in Embodiment 1 of the present invention;

[0037] Figure 6 This is a cross-sectional structural diagram of the filter assembly in Embodiment 1 of the present invention;

[0038] Figure 7 This is a schematic diagram of the structure of the hybrid infusion set in Embodiment 2 of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of the first puncture device in Embodiment 2 of the present invention;

[0040] Figure 9 This is a schematic diagram of the blade absorption sleeve in Embodiment 2 of the present invention;

[0041] Figure 10 This is a schematic diagram of the puncture device receiving groove in Embodiment 2 of the present invention;

[0042] Figure 11 This is one of the structural schematic diagrams of the defoaming cap in Embodiment 2 of the present invention;

[0043] Figure 12 This is a second schematic diagram of the structure of the defoaming cap in Embodiment 2 of the present invention;

[0044] Figure 13This is a schematic diagram of the bubble slide structure in Embodiment 2 of the present invention.

[0045] Figure label:

[0046] 1-Main liquid inlet passage, 11-First check valve, 12-First flow regulating valve;

[0047] 2-Liquid inlet passage, 21-Second check valve, 22-Second flow regulating valve;

[0048] 3-Mixing chamber, 31-Mixing chamber body, 32-First flow channel, 33-Second flow channel, 34-Third flow channel, 36-Liquid injection regulating valve, 361-Valve body, 3611-Valve body opening, 362-Valve core, 3621-Valve core opening, 363-Drive handle;

[0049] 4-Liquid outlet passage, 41-Third check valve, 42-Third flow regulating valve, 43-Filter assembly, 431-Filter membrane, 432-Support mesh, 433-Fixed wall;

[0050] 5-Mixing device, 51-Fixed rod, 52-Rotating bushing, 53-Mixing impeller, 531-Agitating shaft, 532-Iron blade, 5321-Iron blade body, 5322-Mixing pile, 54-Positioner, 541-Outer sleeve, 542-Inner sleeve, 543-Interlocking rod;

[0051] 100 - Infusion tubing;

[0052] 200-First puncture device, 201-Handle, 202-Puncture needle, 203-Puncture needle body, 204-Anti-seepage component, 205-Blade absorbent sleeve, 206-Absorbent sleeve groove, 207-Clamping part sealing sleeve;

[0053] 300-Second puncture device, 301-Receiving groove, 302-Receiving groove body, 303-Puncture needle groove, 304-Elastic sealing clip, 305-Magnetic adhesive patch, 306-First sealing post, 307-Second sealing post;

[0054] 500-Defoaming cap, 501-Defoaming cap body, 502-Bubble slide, 503-Bubble cutter, 504-Notch, 505-Top tip. Detailed Implementation

[0055] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0056] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0057] Example 1

[0058] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a three-way connector, including a main inlet passage 1, a branch inlet passage 2, a mixing chamber 3, an outlet passage 4, and a mixing device 5. The main inlet passage 1 and the branch inlet passage 2 are both connected to the mixing chamber 3 to allow the infused liquid to enter the mixing chamber 3. The outlet passage 4 is connected to the mixing chamber 3 to allow the infused liquid in the mixing chamber 3 to flow out. The mixing device 5 is disposed in the outlet passage 4 to mix the infused liquid. The mixing device 5 includes a fixed rod 51, a rotating bushing 52, and a mixing impeller 53. The fixed rod 51 is fixedly disposed in the outlet passage 4, the rotating bushing 52 is fixedly disposed inside the fixed rod 51, and the mixing impeller 53 is disposed on the rotating bushing 52 and can rotate on the rotating bushing 52 to mix the infused liquid. The three-way connector as a whole can be made of polypropylene.

[0059] The main inlet channel 1 and the branch inlet channel 2 serve as input channels for different infusion fluids, introducing two different infusion fluids into the mixing chamber 3. This provides the basic conditions for subsequent mixing operations, allowing multiple fluids to be collected and mixed within the mixing chamber 3, meeting the clinical need for simultaneous infusion of multiple fluids. For example, the main inlet channel 1 and the branch inlet channel 2 can be connected to different drug bags or syringes to deliver the drug to the mixing chamber 3. It should be noted that in this embodiment, the tubing used to introduce the infusion fluid into the mixing chamber 3 is not limited to the main inlet channel 1 and the branch inlet channel 2. The number of fluid inlet tubes can be increased according to actual clinical needs.

[0060] The mixing chamber 3 serves as a space for liquid collection and initial mixing. Liquids delivered from the main liquid inlet passage 1 and the branch liquid inlet passage 2 are mixed in the mixing chamber 3. Its internal space is used to fuse different liquids before they enter the liquid outlet passage 4. For example, the mixing chamber 3 is a spherical or cylindrical cavity.

[0061] The outlet passage 4 is used to output the infusion fluid after it has been mixed in the mixing chamber 3, and connect it to the patient's infusion line or directly infuse it into the patient's body. It is the output channel of the mixed fluid, ensuring that the mixed fluid can flow smoothly from the inside of the three-way connector to the outside, thus completing the fluid infusion process.

[0062] The mixing device 5 is used to mix the infusion fluid in the mixing chamber 3, so as to promote the thorough and uniform mixing of infusion fluids of different densities, avoid stratification and sedimentation, and ensure that the composition and concentration of the infused drug solution are uniform and consistent, thereby improving the safety and effectiveness of infusion therapy. Specifically, the mixing device 5 includes a fixed rod 51, a rotating bushing 52, and a mixing impeller 53. The fixed rod 51 is fixedly installed in the liquid outlet passage 4, which serves to support and fix the entire mixing device 5, ensuring the stable position of the stirring component in the liquid outlet passage 4 so that it can perform its stirring function normally. At the same time, it can also withstand the forces generated during the stirring process, ensuring that the mixing device 5 will not be displaced or damaged due to liquid flow or stirring action. The rotating bushing 52 is fixedly installed inside the fixed rod 51, further enhancing the structural stability of the mixing device 5. At the same time, it does not affect the normal rotation of the mixing impeller 53, realizing liquid stirring and liquid flow, ensuring the continuity of the stirring process and the smooth output of the liquid; the mixing impeller 53 is set on the rotating bushing 52 and can rotate on the rotating bushing 52. The mixing impeller 53 is the component that directly mixes the infused liquid. When the infused liquid flows to the mixing impeller 53, the mixing impeller 53 is subjected to force and rotates on the rotating bushing 52. The mixing impeller 53 generates stirring force through rotation, so that the infused liquids of different densities are fully mixed in the mixing chamber 3, breaking the layering state between the liquids, distributing the layered liquids evenly, and mixing the drug solution evenly. Thus, the drug solution infused into the body can maintain a uniform distribution of components, solving the technical problem that the drug components cannot be evenly distributed and released in the body due to the layering of the drug solution when using existing multi-port infusion.

[0063] An optional solution of the present invention is as follows: Figure 2 As shown, the mixing impeller 53 includes a stirring shaft 531 and impellers 532 fixedly mounted on the stirring shaft 531. The stirring shaft 531 passes through a rotating bushing 52 and can rotate within the rotating bushing 52. The impellers 532 are components that directly contact the injected liquid and generate stirring force. Multiple impellers 532 are fixed on the stirring shaft 531. The impellers 532 are subjected to the force of the fluid, causing the stirring shaft 531 to rotate within the rotating bushing 52.

[0064] Based on this, the impeller 532 includes an impeller body 5321 and a stirring pile 5322 fixedly installed on the impeller body 5321. The impeller body 5321 provides a basic stirring structure, and the stirring pile 5322 fixedly installed on the impeller body 5321 further enhances the stirring effect. By increasing the flow path and disturbance degree of the stirred liquid, the liquid forms a stronger vortex and mixing motion in the mixing chamber 3, which promotes the full mixing of different liquids and improves the uniformity of the mixed liquid.

[0065] An optional solution of the present invention is as follows: Figure 1As shown, a third check valve 41 and a third flow regulating valve 42 are provided on the liquid outlet passage 4, with the third flow regulating valve 42 located downstream of the third check valve 41; a first check valve 11 and a first flow regulating valve 12 are provided on the main liquid inlet passage 1, with the first flow regulating valve 12 located downstream of the first check valve 11; a second check valve 21 and a second flow regulating valve 22 are provided on the branch liquid inlet passage 2, with the second flow regulating valve 22 located downstream of the second check valve 21. For example, the check valves mentioned above are spring diaphragm type check valves; the flow regulating valves mentioned above are manual flow regulating valves.

[0066] Through the first flow regulating valve 12, the second flow regulating valve 22, and the third flow regulating valve 42, medical staff can control the input flow rate of each infusion fluid and the output flow rate of the mixed fluid, thereby controlling the infusion process. As a result, the infusion rate and dosage can be flexibly adjusted according to the patient's condition, treatment needs, and drug characteristics, ensuring that the patient can accurately receive the required drug treatment, improving the accuracy and reliability of infusion therapy, and better meeting the personalized needs of clinical treatment. Through the first one-way valve 11, the second one-way valve 21, and the third one-way valve 41, backflow of fluid during the infusion process can be effectively prevented, improving the safety of the infusion process.

[0067] An optional solution of the present invention is as follows: Figure 3 As shown, the mixing device 5 also includes a positioner 54, which is fixedly mounted on the fixed rod 51 and sleeved on the mixing impeller 53 to straighten it. The main function of the positioner 54 is to straighten and position the mixing impeller 53, ensuring that it maintains a stable position and posture during rotation, and preventing it from shifting, shaking, or tilting during liquid flow or stirring, thereby ensuring the stability and reliability of the stirring effect. Additionally, when the mixing impeller 53 rotates, it may be subjected to certain forces due to the impact of the liquid flow and the rotational motion of the stirring shaft 531. The torque causes the impeller to sway or rub against the inner wall of the rotating bushing 52. The positioner 54 can effectively reduce this swaying, reduce the wear between the mixing impeller 53 and the rotating bushing 52, extend the service life of the mixing assembly, and also help maintain the stability of the mixing process and improve the mixing uniformity. Specifically, the positioner 54 includes an outer sleeve 541, an inner sleeve 542 and a sleeve rod 543. The sleeve rod 543 is connected between the outer sleeve 541 and the inner sleeve 542. The outer sleeve 541 is fixedly mounted on the fixed rod 51. The mixing impeller 53 passes through the inner sleeve 542 and can rotate within the inner sleeve 542 to straighten the mixing impeller 53.

[0068] An optional solution of the present invention is as follows: Figure 1 and Figure 4As shown, the mixing chamber 3 includes a mixing chamber body 31 and a first flow channel 32, a second flow channel 33 and a third flow channel 34 opened on the mixing chamber body 31. The first flow channel 32 is connected to the main liquid inlet passage 1, the second flow channel 33 is connected to the branch liquid inlet passage 2, and the third flow channel 34 is connected to the liquid outlet passage 4.

[0069] The first flow channel 32 is connected to the main liquid inlet passage 1 and is the channel for the first type of infused liquid to enter the mixing chamber 3. The second flow channel 33 is connected to the branch liquid inlet passage 2 and is the channel for the second type of infused liquid to enter the mixing chamber 3. The third flow channel 34 is connected to the liquid outlet passage 4 and is the channel for the mixed liquid in the mixing chamber 3 to flow out.

[0070] An optional solution of the present invention is as follows: Figure 1 and Figure 4 As shown, the mixing chamber 3 also includes a guide plate, which is fixedly installed inside the mixing chamber body 31 to guide the flow direction of the injected liquid.

[0071] The guide plate is fixedly installed inside the mixing chamber body 31. It is used to guide and adjust the flow direction of the injected liquid entering the mixing chamber 3 through its shape and layout, so that different liquids flow according to a predetermined path and manner, avoiding unnecessary vortices, backflow or turbulent flow phenomena in the mixing chamber body 31, thereby enabling the liquid to be mixed more orderly.

[0072] A preferred embodiment of the present invention is as follows: Figure 5 As shown, the mixing chamber 3 also includes a liquid injection regulating valve 36. The liquid injection regulating valve 36 includes a valve body 361, a valve core 362, and a drive handle 363. The valve body 361 is fixedly disposed inside the mixing chamber body 31, and the valve body 361 is provided with valve body openings 3611 that are respectively connected to the first flow channel 32, the second flow channel 33, and the third flow channel 34. The valve core 362 can rotate inside the valve body 361 to adjust the conduction and cut-off between the valve body opening 3611 and the valve core 362. The drive handle 363 is fixedly disposed on the valve core 362 to drive the valve core 362 to rotate. The valve core 362 is provided with a valve core opening 3621 that is directly opposite to the valve body opening 3611.

[0073] The valve body 361 has multiple valve body openings 3611 that are respectively connected to the first flow channel 32, the second flow channel 33 and the third flow channel 34, which serve to connect and integrate different flow ports and provide a basic structure for the rotation adjustment of the valve core 362. Through the valve body openings 3611 and the valve core openings 3621, the valve core 362 can effectively control the conduction and cut-off states between different flow ports during rotation, so as to achieve precise adjustment of the flow direction and flow rate of the injected liquid.

[0074] By rotating the valve core 362, the relative positional relationship between the valve body opening 3611 and the first flow channel 32, the second flow channel 33 and the third flow channel 34 can be changed, thereby realizing the control of the conduction and cutoff between different flow ports. For example, when it is necessary for the liquids of the main inlet passage 1 and the branch inlet passage 2 to enter the mixing chamber 3 for mixing at the same time, the valve core 362 can be rotated to the corresponding position, so that the different valve body openings 3611 are connected to the first flow channel 32, the second flow channel 33 and the third flow channel 34 respectively, realizing the flexible adjustment of the flow direction and flow rate of the infusion liquid to meet different infusion needs and treatment scenarios.

[0075] The drive handle 363 is fixedly mounted on the valve core 362, providing a drive component for the operator (medical staff). By manually or otherwise operating the drive handle 363, the medical staff can drive the valve core 362 to rotate within the valve body 361, thereby adjusting the flow direction and flow rate of the infusion fluid. This allows the medical staff to adjust the infusion parameters in a timely manner according to the actual situation during the infusion process, improving the flexibility and controllability of infusion therapy.

[0076] It should be noted that the liquid infusion regulating valve 36 in this embodiment of the invention can also adopt the regulating valve structure in the prior art.

[0077] An optional solution of the present invention is as follows: Figure 1 and Figure 6 As shown, a filter assembly 43 is also provided on the liquid outlet passage 4. The filter assembly 43 includes a filter membrane 431, a support net 432 and a fixed wall 433. The filter membrane 431 is fixedly installed on the support net 432 to filter the infused liquid. The support net 432 is fixedly installed on the fixed wall 433. The fixed wall 433 is fixedly installed on the inner wall of the liquid outlet passage 4.

[0078] The filter membrane 431 is used to filter the infusion fluid. Through its microporous structure, it can effectively intercept tiny particles, impurities, and precipitates in the infusion fluid, allowing only liquid and dissolved drug molecules to pass through. This ensures the purity of the fluid infused into the patient's body, prevents adverse reactions caused by impurities entering the body, and protects the patient's infusion safety. For example, the pore size of the filter membrane 431 is 0.5 μm. The support mesh 432 provides a support structure for the filter membrane 431 to ensure that the filter membrane 431 remains flat and taut during liquid flow, preventing deformation, wrinkling, or damage to the filter membrane due to liquid pressure or its own weight. This ensures the stability and reliability of the filtration effect. At the same time, the support mesh 432 can also withstand a certain amount of liquid pressure, preventing the filter membrane from being ruptured or damaged under high pressure, and extending the service life of the filter assembly. The fixing wall 433 is fixedly installed on the inner wall of the liquid outlet passage 4, serving to fix and support the entire filter assembly 43. For example, the support mesh 432 can be made of stainless steel, and the fixing wall 433 can be made of polypropylene.

[0079] Example 2

[0080] Embodiment 2 of the present invention, as follows Figure 7 As shown, a hybrid infusion set is provided, including an infusion tube 100, a first puncture device 200, a second puncture device 300, and a three-way connector as in Embodiment 1. The first puncture device 200 is connected to one end of the infusion tube 100 to puncture a liquid container, the second puncture device 300 is connected to the other end of the infusion tube 100 to puncture the human body, and the three-way connector is connected to the infusion tube 100 and is close to the second puncture device 300.

[0081] The infusion tubing 100 serves as the main body of the mixing infusion set, acting as the flow channel for the infused liquid. It also forms the basis for auxiliary functional settings. The infusion tubing 100 may be equipped with a flow control valve, a low-liquidity alarm, etc. For example, the infusion tubing 100 can be made of PVC or TPU material. To protect against sunlight or light, the infusion tubing 100 can be covered with a sun-protective film to prevent sunlight or light from affecting the active ingredients within it. The first puncture device 200 is used to pierce the liquid container through a rubber stopper to obtain the infusion liquid; it can be made of ABS plastic. The second puncture device 300 is used to pierce the human body to introduce the infusion liquid; it can be made of stainless steel. The tee connector allows infusion liquids of different densities to be fully mixed in the mixing chamber 3, breaking down the stratification between liquids and distributing the stratified liquids evenly. This ensures uniform mixing of the infused liquid, maintaining a uniform distribution of components.

[0082] An optional solution of the present invention is as follows: Figure 8 As shown, the first puncture device 200 includes a handle 201 and a puncture needle 202. The handle 201 is fixedly mounted on the puncture needle 202. The puncture needle 202 includes a puncture needle body 203 and a leak-proof component 204 sleeved on the puncture needle body 203. The leak-proof component 204 can be used to prevent leakage when the puncture needle body 203 is inserted into the rubber stopper of the liquid container.

[0083] The handle 201 is used for stable hand gripping and can be of a cylindrical structure. As a consideration for ergonomics, grooves can be provided at both ends of the handle 201. The grooves at both ends cooperate with the thumb and index finger of the hand to make the grip of the handle 201 more stable. For example, the handle 201 can be made of rubber and has a through hole that cooperates with the puncture needle 202. The cooperation between the through hole and the puncture needle 202 can be an interference fit. The handle 201 can move in an axial position of the puncture needle 202. The puncture needle 202 is used to pierce the rubber stopper of the liquid container, and the anti-leakage component 204 is used to prevent leakage.

[0084] An optional solution of the present invention is as follows: Figure 8As shown, the anti-leakage fluid assembly 204 includes a blade absorbent sleeve 205, which is disposed on the puncture needle 202 and close to the blade of the puncture needle body 203. The blade absorbent sleeve 205 is made of absorbent material, such as absorbent silicone. When the puncture needle 202 pierces the rubber stopper, the infusion fluid can easily pass through the blade of the puncture needle 202 and flow out along the puncture needle 202. This is a common situation that leads to leakage of the infusion fluid. The blade absorbent sleeve 205 is used to absorb the fluid that passes through the blade in the liquid container when the blade is inserted into the rubber stopper of the liquid container. Therefore, the infusion fluid is difficult to pass through the blade of the puncture needle body 203 and flow out along the puncture needle 202, thus avoiding leakage of the infusion fluid during the insertion of the puncture needle 202.

[0085] Based on this, such as Figure 9 As shown, the blade absorption sleeve 205 has a sleeve-shaped structure. An absorption sleeve groove 206 is provided on the puncture needle body 203 for the blade absorption sleeve 205 to be fitted into. The blade absorption sleeve 205 is partially embedded in the absorption sleeve groove 206. The blade absorption sleeve 205 has a portion protruding from the absorption sleeve groove 206. Thus, the blade absorption sleeve 205 absorbs leakage and also serves as a sealant during the fitting process between the puncture needle body 203 and the rubber stopper.

[0086] As an improvement, such as Figure 9 As shown, the cross-section of the blade absorption sleeve 205 is strip-shaped. The part of the blade absorption sleeve 205 protruding from the absorption sleeve groove 206 has a certain angle with the outer wall of the puncture needle body 203, which can be 30-60°, specifically 35° or 40°. Thus, the blade absorption sleeve 205 has an outward unfolding posture. During the process of contacting the rubber stopper of the liquid container, it can be supported in the rubber stopper of the liquid container by its own shape, playing the role of water absorption and sealing.

[0087] An optional solution of the present invention is as follows: Figure 8 As shown, the anti-leakage component 204 includes a clamping sealing sleeve 207, which is sleeved on the puncture needle body 203 and contacts the rubber stopper of the liquid container. Through the clamping sealing sleeve 207, the puncture needle body 203 and the rubber stopper of the liquid container are kept sealed during the infusion process to prevent leakage during the liquid infusion process. For example, the clamping sealing sleeve 207 can be made of silicone. It should be noted that the hardness of the clamping sealing sleeve 207 is less than that of the rubber stopper. Therefore, during the liquid infusion process, the clamping sealing sleeve 207 can be squeezed into the deformed part of the rubber stopper to block the leakage.

[0088] Based on this, a plurality of clamping sealing sleeves 207 are provided on the puncture needle body 203, for example, 2-3. The outer diameter of the clamping sealing sleeve 207 is larger than the outer diameter of the puncture needle body 203, and the clamping sealing sleeve 207 can be attached to the puncture needle body 203. As an improvement, the clamping sealing sleeve 207 at the upper end is made of water-absorbing material, such as a polymer gel water-absorbing sealing sleeve, and the clamping sealing sleeve 207 at the lower end is made of silicone.

[0089] An optional solution of the present invention is as follows: Figure 10 As shown, the second trocar 300 includes a trocar receiving groove 301, which is fixedly mounted on the infusion tube 100 to accommodate the second trocar 300 and prevent it from puncturing the body. The trocar receiving groove 301 serves to fix and protect the second trocar 300. During infusion, when the second trocar 300 is not in use, it can be placed in the trocar receiving groove 301 to prevent it from moving around or being lost, and also to avoid the risk of puncture wounds caused by the tip of the trocar being exposed. After the infusion is completed, To prevent the tip of the puncture device from being exposed, the second puncture device 300 is placed back into the puncture device receiving slot 301. For example, the puncture device receiving slot 301 can be made of plastic. In the prior art, the puncture device is generally fitted with a puncture device tube. When in use, the puncture device tube is pulled out, and the tip of the puncture device is exposed and can easily puncture the human body. By fixing the puncture device receiving slot 301 on the infusion tube 100, the puncture device can be kept out of the way. Thus, it is effectively prevented from puncturing medical staff or patients when the puncture device is not in use, reducing the risk of accidental injury and improving the safety of the infusion process.

[0090] An optional solution of the present invention is as follows: Figure 10 As shown, the puncture device receiving groove 301 includes a receiving groove body 302, a puncture needle groove 303, and an elastic sealing clip 304. The puncture needle groove 303 is formed on the receiving groove body 302 to serve as a receiving space for the second puncture device 300. The puncture needle groove 303 is provided with an opening for the second puncture device 300 to be inserted. The elastic sealing clip 304 is disposed at the opening of the puncture needle groove 303 to prevent the second puncture device 300 from falling out.

[0091] Based on this, a magnetic adsorption sticker 305 is provided in the puncture needle groove 303 to adsorb the second puncture device 300. Thus, the second puncture device 300 can be more firmly placed in the puncture needle groove 303. For example, the magnetic adsorption sticker 305 can be pasted in the puncture needle groove 303. The magnetic adsorption sticker 305 can be made of a strong magnetic material, such as neodymium iron boron.

[0092] Based on this, the elastic occlusion clip 304 includes a first occlusion post 306 and a second occlusion post 307, both of which are elastic. For example, both can be made of silicone. The first occlusion post 306 is attached to one side of the puncture needle groove 303, and the second occlusion post 307 is attached to the other side of the puncture needle groove 303. The first occlusion post 306 and the second occlusion post 307 squeeze each other, allowing the second puncture device 300 to pass through the space squeezed by the first occlusion post 306 and the second occlusion post 307 and enter the puncture needle groove 303. After the second puncture device 300 enters the puncture needle groove 303, the first occlusion post 306 and the second occlusion post 307 can also squeeze the second puncture device 300 to fix it. Combined with the adsorption effect of the magnetic adsorption sticker 305, the second puncture device 300 can be firmly fixed in the puncture needle groove 303. Thus, it further avoids the puncture device from pricking medical staff or patients when not in use, reducing the risk of accidental injury.

[0093] An optional solution of the present invention is as follows: Figure 11 and Figure 12 As shown, the mixing infusion set also includes an antifoaming cap 500. For example, the antifoaming cap 500 has a hat-shaped structure with openings at both the top and bottom for the infusion fluid to pass through. The antifoaming cap 500 is fixedly installed (by adhesive) inside the infusion tube 100 and close to the second puncture device 300. The antifoaming cap 500 includes an antifoaming cap body 501 and an air bubble channel 502 formed on the antifoaming cap body 501. It should be noted that the air bubble channel 502 has a smooth surface, for example, with a smoothness of submicron or nanometer level precision, and the material can be glass. The hat-shaped structure of the antifoaming cap 500 increases the contact area of ​​the fluid within the infusion tube 100, which is beneficial for the separation and floating of air bubbles, providing a basic condition for the smooth discharge of air bubbles. For example, the cross-sectional shape of the air bubble channel 502 can be arc-shaped. The bubble can be semi-circular. During the infusion process, the generated microbubbles can adhere to the defoaming cap body 501 and move along the smooth bubble slide 502 in the opposite direction to the infusion direction. After moving to the top of the defoaming cap body 501, multiple bubbles converge at the top of the defoaming cap body 501 and become larger bubbles. These larger bubbles then move along the infusion tube 100 in the opposite direction to the infusion direction. In this way, bubbles in the liquid can be effectively separated and removed during the infusion process. Microbubbles are unlikely to enter the human body with the infusion liquid. The above solution aims to solve the problem of microbubbles entering blood vessels and irritating the inner wall of blood vessels, causing local venous inflammation, resulting in symptoms such as local redness, swelling, and pain. Furthermore, by removing bubbles from the liquid, serious consequences such as air embolism that may be caused by bubbles entering human blood vessels are avoided, ensuring the patient's infusion safety.

[0094] An optional solution of the present invention is as follows: Figure 13As shown, the defoaming cap body 501 is provided with multiple bubble channels 502, which extend from the bottom end to the top end of the defoaming cap body 501. A bubble cutter 503 is provided between adjacent bubble channels 502. The bubble cutter 503 is used to puncture the bubbles in the infusion liquid. The bubble cutter 503 can effectively destroy the integrity of the bubbles, reduce the volume of the bubbles, and allow the bubbles to rise and be discharged from the bubble channels, thereby improving the separation efficiency of the bubbles, reducing the content of bubbles in the liquid, and further improving the safety and reliability of the infusion.

[0095] Based on this, such as Figure 13 As shown, the bubble cutter 503 has multiple notches 504, each notch 504 including a tip 505 for piercing bubbles in the infused liquid. For example, the notch shape can be V-shaped with a sharp tip to pierce bubbles more effectively.

[0096] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A mixed type infusion device, characterized by, The infusion tube (100), the first puncture device (200), the second puncture device (300) and the three-way joint, the first puncture device (200) is communicated with one end of the infusion tube (100) to pierce into the liquid container, the second puncture device (300) is communicated with the other end of the infusion tube (100) to pierce into the human body, and the three-way joint is communicated on the infusion tube (100); the first puncture device (200) comprises a puncture needle (202), the puncture needle (202) comprises a puncture needle body (203) and a liquid-proof assembly (204) sleeved on the puncture needle body (203), the liquid-proof assembly (204) comprises a blade absorption sleeve (205) and a clamping part liquid-proof sleeve (206), the blade absorption sleeve (205) is arranged on the puncture needle body (203) and is close to the blade of the puncture needle body (203) to absorb the liquid in the liquid container through the blade when the blade is inserted into the rubber plug of the liquid container, and the clamping part liquid-proof sleeve (206) is sleeved on the puncture needle body (203) and can abut against the rubber plug of the liquid container to keep the sealing of the puncture needle body (203) and the rubber plug of the liquid container during the infusion process; the second puncture device (300) comprises a puncture device containing groove (301), the puncture device containing groove (301) is fixedly arranged on the infusion tube (100) to contain the second puncture device (300), the puncture device containing groove (301) comprises a containing groove body (302), a puncture needle groove (303) and an elastic sealing clamp (304), the puncture needle groove (303) is arranged on the containing groove body (302) to serve as a containing space of the second puncture device (300), the puncture needle groove (303) is provided with an opening for the second puncture device (300) to be put in, and the elastic sealing clamp (304) is arranged at the opening of the puncture needle groove (303) to prevent the second puncture device (300) from falling out, and a magnetic adsorption sticker (305) is arranged in the puncture needle groove (303) to adsorb the second puncture device (300); The three-way joint comprises a main liquid inlet passage (1), a branch liquid inlet passage (2), a mixing chamber (3), a liquid outlet passage (4) and a mixing device (5), the main liquid inlet passage (1) and the branch liquid inlet passage (2) are communicated with the mixing chamber (3), the liquid outlet passage (4) is communicated with the mixing chamber (3), and the mixing device (5) is arranged in the liquid outlet passage (4) to mix the infusion liquid; Further comprising a defoaming cap (500), the defoaming cap (500) is fixedly arranged in the infusion tube (100) and close to the second puncture device (300), the defoaming cap (500) comprises a defoaming cap body (501) and a bubble slide (502) arranged on the defoaming cap body (501), a bubble cutter (503) is arranged between adjacent bubble slides (502), and a plurality of openings (504) are arranged on the bubble cutter (503).

2. The mixed fluid infusion set of claim 1, wherein, The first puncture device (200) comprises a handle (201) sleeved on the puncture needle (202) for finger clamping.

3. The mixed fluid infusion set of claim 1, wherein, The main liquid inlet passage (1) is provided with a first one-way valve (11) and a first flow regulating valve (12), and the first flow regulating valve (12) is located downstream of the first one-way valve (11).

4. The mixed fluid infusion set of claim 1, wherein, The branch liquid inlet passage (2) is provided with a second one-way valve (21) and a second flow regulating valve (22), and the second flow regulating valve (22) is located downstream of the second one-way valve (21).

5. The mixed fluid infusion set of claim 1, wherein, The mixing chamber (3) comprises a mixing chamber body (31) and a first flow channel (32), a second flow channel (33) and a third flow channel (34) formed in the mixing chamber body (31), the first flow channel (32) is communicated with the main liquid inlet passage (1), the second flow channel (33) is communicated with the branch liquid inlet passage (2), and the third flow channel (34) is communicated with the liquid outlet passage (4).

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