Infusion set with easy-to-operate sealing device

Abstract

This utility model discloses an infusion set with an easy-to-operate sealing device, including an indwelling intravenous needle, a reservoir, and a three-way valve. The reservoir is pre-filled with sealing fluid. The three-way valve has a first interface, a second interface, and a third interface. The first interface is connected to the infusion port of the indwelling intravenous needle, the second interface is connected to the reservoir, and the third interface is used to connect to the infusion tubing. The three-way valve is equipped with a switching knob to control the switching between a first connected state and a second connected state. In the first connected state, the first interface and the third interface are connected to infuse fluid into the indwelling intravenous needle through the infusion tubing. In the second connected state, the first interface and the second interface are connected to inject sealing fluid into the indwelling intravenous needle by squeezing the reservoir. This infusion set improves upon the problems of short saline preservation time and cumbersome operation associated with syringe sealing, effectively improving work efficiency in clinical medical processes and reducing the workload of medical staff.

Description

Technical Field

[0001] This utility model relates to medical infusion sets, and more particularly to an infusion set with an easy-to-operate sealing device. Background Technology

[0002] Indwelling intravenous catheters are widely used in clinical medicine for patients undergoing prolonged and repeated intravenous infusions. After the infusion or medication is completed, medical staff need to perform a sealing procedure on the catheter to maintain its patency and prevent blood clotting and blockage of the tubing. Currently, the commonly used sealing method in clinical practice is to draw a certain amount of normal saline (usually 5-10 ml) with a syringe and then inject it into the indwelling catheter for flushing and sealing.

[0003] However, this syringe-based sealing method presents several inconveniences. First, medical staff need to pre-draw an appropriate amount of saline solution using a syringe, but according to medical safety regulations and aseptic technique requirements, the saline solution must be used within two hours of being drawn into the syringe. This prevents medical staff from preparing a large quantity of sealing syringes in advance, forcing them to continuously prepare medication, increasing workload and time costs. Second, in a busy clinical environment, when a patient's infusion is completed, medical staff hear the prompt and go to handle the situation. At this time, medical staff may forget to bring the prepared sealing syringe, requiring them to return to the nurses' station or pharmacy counter to retrieve the medication, which not only delays needle removal and sealing time but also increases the travel distance and workload for medical staff. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this invention is to provide an infusion set with an easy-to-operate sealing device.

[0005] To achieve the above objectives, an infusion set with an easy-to-operate sealing device according to an embodiment of the present invention includes: Indwelling intravenous catheter; The reservoir is pre-filled with sealing fluid; The three-way valve has a first interface, a second interface and a third interface. The first interface is connected to the infusion port of the indwelling intravenous needle, the second interface is connected to the reservoir, and the third interface is used to connect the infusion tube. The three-way valve is equipped with a switching knob to control the switching between a first connected state and a second connected state. In the first connected state, the first interface is connected to the third interface to infuse fluid into the indwelling venous catheter through the infusion tube. In the second connected state, the first interface is connected to the second interface to inject sealing fluid into the indwelling venous catheter by squeezing the reservoir.

[0006] The infusion set with an easy-to-operate sealing device provided in this embodiment of the invention features a three-way valve on the indwelling intravenous catheter and a reservoir on the three-way valve. In the infusion state, the first and third ports on the three-way valve are connected, ensuring that the infusion tubing can directly deliver infusion fluid to the indwelling catheter. In the sealing state, a switching knob connects the first and second ports, allowing medical staff to quickly inject sealing fluid simply by squeezing the reservoir, eliminating the need for on-site reassembly or carrying a syringe. This design not only meets aseptic operation requirements and improves upon the problems of short saline preservation time and cumbersome operation associated with syringe sealing, but also effectively improves work efficiency in clinical medical processes and reduces the workload of medical staff.

[0007] In addition, the infusion set with an easy-to-operate sealing device according to the above embodiments of the present invention may also have the following additional technical features: According to one embodiment of the present invention, the outer surface of the reservoir is provided with a capacity indicator scale for indicating the amount of physiological saline injected.

[0008] According to one embodiment of the present invention, a first one-way valve is provided between the liquid storage bladder and the second interface to prevent liquid or blood backflow.

[0009] According to one embodiment of the present invention, the liquid storage bladder has a male connector, the end face of which is provided with a sealing membrane, and the second interface is a female interface, the female interface being provided with a spike. When the male connector is connected to the female connector, the spike punctures the sealing membrane to allow the sealing fluid to flow out.

[0010] According to one embodiment of the present invention, the three-way valve is further provided with a locking element to prevent accidental switching to the second connected state during infusion.

[0011] According to one embodiment of the present utility model, the locking element is a positioning pin made of metal material, the switching knob is provided with a through hole, and the three-way valve is provided with a first positioning hole and a second positioning hole. When the through hole is aligned with the first positioning hole and the positioning pin passes through the through hole and is inserted into the first positioning hole, the positioning pin limits the three-way valve to the first connected state. When the through hole is aligned with the second positioning hole and the positioning pin passes through the through hole and is inserted into the second positioning hole, the positioning pin limits the three-way valve to the second connected state.

[0012] According to one embodiment of the present invention, the upper end of the positioning pin has an operating part for medical personnel to pick up and operate.

[0013] According to one embodiment of the present invention, the liquid reservoir is made of an elastic and transparent material.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an infusion set with an easy-to-operate sealing device according to an embodiment of the present invention; Figure 2 This is an exploded view of an infusion set with an easy-to-operate sealing device according to an embodiment of the present invention; Figure 3 This is a front view of the three-way valve in an infusion set with an easy-to-operate sealing device according to an embodiment of the present invention; Figure 4 This is an exploded view of the three-way valve in an infusion set with an easy-to-operate sealing device according to an embodiment of this utility model.

[0017] Figure label: 10. Indwelling intravenous catheter; H10, infusion port; 20. Reservoir bladder; 201. Male connector; 30. Three-way valve; 301. First Interface; 302. Second Interface; 3021, Spikes; 303, Third Interface; 304. Switch knob; 305. Positioning pin; H31, through hole; H32, First positioning hole; H33, second positioning hole; 40. Infusion tube.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The following describes in detail, with reference to the accompanying drawings, an infusion set with an easy-to-operate sealing device.

[0025] Reference Figures 1 to 4 As shown, the infusion set with an easy-to-operate sealing device provided according to the embodiment of the present invention includes an indwelling venous needle 10, a reservoir 20, and a three-way valve 30.

[0026] Specifically, the indwelling intravenous catheter 10 is a standard medical indwelling catheter used for intravenous infusion in patients.

[0027] The reservoir 20 is pre-filled with a sealing solution. This sealing solution is sterile saline or other suitable liquid for sealing, used to close the indwelling intravenous catheter 10 after the infusion or medication is terminated, preventing blood clotting and blockage of the catheter. Preferably, the reservoir 20 is made of an elastic and transparent material.

[0028] The three-way valve 30 has a first port 301, a second port 302, and a third port 303. The first port 301 is connected to the infusion port H10 of the indwelling intravenous catheter 10. The second port 302 is connected to the reservoir 20, allowing the pre-filled sealing fluid in the reservoir 20 to be injected into the indwelling intravenous catheter 10 through the second port 302. The third port 303 is used to connect to the infusion tubing 40, enabling the infusion tubing 40 to directly deliver fluid to the indwelling intravenous catheter 10. It is understood that the first port 301, the second port 302, and the third port 303 can use universal interfaces found in medical devices, such as Luer male / female connectors, to facilitate quick and reliable connection.

[0029] The three-way valve 30 is provided with a switching knob 304 to control the switching of the three-way valve 30 between a first connected state and a second connected state. In the first connected state, the first interface 301 is connected to the third interface 303 to infuse fluid into the indwelling intravenous needle 10 through the infusion tube 40. In the second connected state, the first interface 301 is connected to the second interface 302 to inject sealing fluid into the indwelling intravenous needle 10 by squeezing the reservoir 20.

[0030] During use, medical staff can switch the three-way valve 30 between the first connected state and the second connected state by rotating the switching knob 304 on the three-way valve 30 while maintaining a stable seal.

[0031] In the first connected state, the switching knob 304 switches the internal channel of the three-way valve 30 so that the first interface 301 and the third interface 303 are directly connected. At this time, an infusion channel is formed between the infusion tubing 40 and the indwelling intravenous needle 10, ensuring that the fluid can be smoothly and continuously injected into the patient's body through the infusion tubing 40. After the infusion is completed, medical staff can quickly switch to the second connected state. In the second connected state, the first interface 301 and the second interface 302 are connected to form a sealing channel. Then, medical staff only need to gently squeeze the reservoir 20 to inject the sealing fluid stored in the reservoir 20 into the indwelling intravenous needle 10. This method eliminates the need to carry an additional syringe or re-extract the medication, greatly simplifying the sealing operation process.

[0032] According to the embodiments of this utility model, an infusion set with an easy-to-operate sealing device is provided. A three-way valve 30 is installed on the indwelling intravenous needle 10, and a reservoir 20 is installed on the three-way valve 30. In the infusion state, the first port 301 and the third port 303 on the three-way valve 30 are connected to ensure that the infusion tube 40 can directly deliver infusion fluid to the indwelling needle. In the sealing state, the first port 301 is connected to the second port 302 by switching knob 304. Medical staff only need to squeeze the reservoir 20 to quickly inject the sealing fluid, without the need for on-site reassembly or carrying a syringe. This design not only meets the requirements of aseptic operation and improves the problems of short saline preservation time and cumbersome operation in syringe sealing, but also effectively improves the work efficiency in clinical medical process and reduces the workload of medical staff.

[0033] In one embodiment of this utility model, the outer surface of the reservoir 20 is provided with a volume indicator scale line to indicate the amount of physiological saline injected. This facilitates medical staff to monitor the injection volume in real time when squeezing the reservoir 20 to inject the sealing fluid, ensuring that the sealing operation strictly meets medical requirements. At the same time, it also improves the convenience and efficiency of clinical operation.

[0034] Preferably, the reservoir 20 has a capacity of 3 to 10 ml, more preferably 5 ml, which provides sufficient sealing solution for clinical use without causing waste.

[0035] In one embodiment of this utility model, a first one-way valve is provided between the liquid reservoir 20 and the second interface 302 to prevent liquid or blood backflow.

[0036] For example, the first one-way valve is a valve disc valve. When medical staff apply pressure by squeezing the reservoir 20, the sealing fluid pushes the valve disc open under the positive pressure, allowing the fluid to smoothly enter the indwelling venous needle 10 through the second interface 302. When the pressure is removed, the valve disc closes quickly under the elastic action, effectively preventing the backflow of fluid or blood.

[0037] This embodiment effectively prevents the backflow of sealing fluid or blood by setting a first one-way valve between the reservoir 20 and the second interface 302, ensuring the directional flow and tightness of the liquid during injection and subsequent use, thereby further improving the safety and stability of the sealing operation.

[0038] In addition, the reservoir 20 is equipped with a second one-way valve 202, which allows external air to be drawn into the reservoir 20 in one direction. In this way, during the sealing operation, the squeezing operation can be performed by squeezing and releasing, thereby achieving multiple squeezing injections, forming pulse sealing, and achieving a better sealing effect.

[0039] In one embodiment of this utility model, the reservoir 20 has a male connector 201, the end face of which is provided with a sealing film. This sealing film ensures that the pre-filled sealing fluid in the reservoir 20 remains sterile and sealed when not in use, and can maintain a long shelf life.

[0040] The second interface 302 is a female interface, and the female interface is provided with a spike 3021. When the male connector 201 is connected to the female interface, the spike 3021 punctures the sealing membrane to allow the sealing fluid to flow out.

[0041] During use, when medical personnel connect the male connector 201 on the reservoir 20 to the second interface 302 (female interface), the spike 3021 built into the female interface first contacts the sealing membrane during insertion and punctures it under a certain pressure. The punctured sealing membrane forms a small hole or rupture area, allowing the sealing fluid to flow out smoothly. In subsequent sealing operations, the sealing process can then be performed. The structure of the male connector 201 and the female interface not only ensures a tight seal after connection but also enables rapid connection.

[0042] This embodiment achieves sealing of the sealing fluid by providing a male connector 201 with a sealing membrane on the reservoir 20 and a spike 3021 in the second interface 302 (female interface). This ensures that the sealing fluid in the reservoir 20 remains sterile and closed before use. Moreover, the sealing membrane can be quickly punctured during connection to form a stable liquid outflow channel, thereby improving the convenience, safety and reliability of the sealing operation.

[0043] In some embodiments of this utility model, the three-way valve 30 is also provided with a locking element to prevent accidental switching to the second connected state during infusion.

[0044] During infusion, the three-way valve 30 is in the first connected state. The locking element can fix the switching knob 304, preventing it from rotating or moving, thereby ensuring that the first port 301 and the third port 303 always remain connected. This prevents accidental switching to the second port 302 connected to the reservoir 20 during infusion. Once the infusion is complete, medical staff can release the locking element and then turn the switching knob 304 to switch to the second connected state, allowing for smooth injection of the sealing fluid.

[0045] In this embodiment, the locking mechanism is designed to be both easy for users to use during normal operation and to fully prevent accidental operation, thus ensuring that the three-way valve 30 has high reliability in complex clinical environments.

[0046] In one embodiment of this utility model, the locking element is a positioning pin 305 made of metal, the switching knob 304 is provided with a through hole H31, and the three-way valve 30 is provided with a first positioning hole H32 and a second positioning hole H33.

[0047] When the through hole H31 is aligned with the first positioning hole H32 and the positioning pin 305 passes through the through hole H31 and is inserted into the first positioning hole H32, the positioning pin 305 restricts the three-way valve 30 to the first connected state.

[0048] When the through hole H31 is aligned with the second positioning hole H33 and the positioning pin 305 passes through the through hole H31 and is inserted into the second positioning hole H33, the positioning pin 305 restricts the three-way valve 30 to the second connected state.

[0049] In other words, in the first connected state, i.e., the infusion state, the switching knob 304, when rotated, aligns its through hole H31 with the preset first positioning hole H32 on the three-way valve 30. Then, the positioning pin 305 passes through the through hole H31 on the switching knob 304 and is inserted into the first positioning hole H32 of the three-way valve 30, thereby fixing the three-way valve 30. At this time, the positioning pin 305 firmly holds the three-way valve 30 in the first connected state, ensuring that the first interface 301 and the third interface 303 maintain a stable connection, thus ensuring that the infusion tubing 40 can continuously and accurately transfer fluid from the infusion tubing 40 to the indwelling intravenous needle 10, avoiding switching of the connected state due to accidental operation during the infusion process.

[0050] Conversely, when a sealing operation is required, the three-way valve 30 should be switched to the second connected state. To do this, medical personnel need to remove the positioning pin 305 to release the switch knob 304. Then, by rotating the switch knob 304, align its through-hole H31 with the second positioning hole H33 on the three-way valve 30. Subsequently, the positioning pin 305 is passed through the through-hole H31 on the switch knob 304 and inserted into the second positioning hole H33, locking the three-way valve 30 in the second connected state. In this state, the first interface 301 and the second interface 302 are connected, and by squeezing the reservoir 20, the pre-filled sealing fluid in the reservoir 20 is smoothly injected into the indwelling intravenous catheter 10, achieving rapid sealing after infusion termination.

[0051] In the above structure, the positioning pin 305, the through hole H31 on the switching knob 304, the first positioning hole H32 on the three-way valve 30, and the second positioning hole H33 constitute a simple and reliable locking structure. During infusion, it prevents accidental switching of the three-way valve 30 to the sealed state due to misoperation or external interference. Simultaneously, when a switch to the sealed state is required, it ensures that the three-way valve 30 switches to the sealed state quickly and accurately, thereby achieving high efficiency and safety in the overall operation process.

[0052] Preferably, the upper end of the positioning pin 305 has an operating part for medical staff to pick up and operate, thus facilitating the operation of medical staff to pull out or insert the positioning pin 305.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An infusion set with an easy-to-operate tube sealing device, characterized in that include: Indwelling intravenous catheter; The reservoir is pre-filled with sealing fluid; The three-way valve has a first interface, a second interface and a third interface. The first interface is connected to the infusion port of the indwelling intravenous needle, the second interface is connected to the reservoir, and the third interface is used to connect the infusion tube. The three-way valve is equipped with a switching knob to control the switching between a first connected state and a second connected state. In the first connected state, the first interface is connected to the third interface to infuse fluid into the indwelling venous catheter through the infusion tube. In the second connected state, the first interface is connected to the second interface to inject sealing fluid into the indwelling venous catheter by squeezing the reservoir. The reservoir has a male connector with a sealing membrane on its end face, and the second interface is a female interface with a spike inside. When the male connector is connected to the female connector, the spiked part punctures the sealing membrane to allow the sealing fluid to flow out; The three-way valve is also equipped with a locking element to prevent accidental switching to the second connection state during infusion; The locking element is a positioning pin made of metal, the switching knob is provided with a through hole, and the three-way valve is provided with a first positioning hole and a second positioning hole. When the through hole is aligned with the first positioning hole and the positioning pin passes through the through hole and is inserted into the first positioning hole, the positioning pin limits the three-way valve to the first connected state. When the through hole is aligned with the second positioning hole and the positioning pin passes through the through hole and is inserted into the second positioning hole, the positioning pin limits the three-way valve to the second connected state.

2. The infusion set with easy-to-operate occlusion device of claim 1, wherein, The outer surface of the reservoir is provided with a capacity indicator scale to indicate the amount of physiological saline injected.

3. The infusion set with an easy-to-operate sealing device according to claim 1, characterized in that, A first one-way valve is provided between the reservoir and the second interface to prevent liquid or blood backflow.

4. The infusion set with an easy-to-operate sealing device according to claim 1, characterized in that, The upper end of the positioning pin has an operating part for medical staff to handle and operate.

5. The infusion set with easy operable occluding means of claim 1, wherein, The reservoir is made of an elastic and transparent material.

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