Medical three-way valve for infusion

By introducing a hard infusion tube and protective sleeve into the medical three-way valve, the problem of the infusion hose being easily bent during operation is solved, achieving higher smoothness and convenient user experience.

CN222218430UActive Publication Date: 2024-12-24FOSHAN SECOND PEOPLES HOSPITAL
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420175296.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-24
Publication Date
2024-12-24
Estimated Expiration
2034-01-24

AI Technical Summary

Technical Problem

The existing three-way valves for medical use are likely to cause the infusion hose to be touched by the hands and bent during operation, which affects the smoothness of the infusion, especially when medical staff change their dressings.

Method used

A medical three-way valve for infusion including valve body and protective components is designed, which is connected to the external interface through an infusion hard tube to avoid direct contact with the infusion hose of the hand. It adopts an adjustable protective cover and threaded joint to enhance protection. , and adjust the position of the outer interface by rotating the protective cover for better protection.

Benefits of technology

It effectively avoids the infusion hose being bent or crushed during operation, ensures the infusion patency, and improves the modification and convenience of the equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222218430U_ABST
    Figure CN222218430U_ABST
Patent Text Reader

Abstract

The utility model discloses a medical three-way valve for transfusion, which comprises a valve body and a protective component, the valve body is provided with three connecting ports and a valve rod, the valve rod is rotatably mounted in the valve body, and the valve rod is used for communicating any connecting port with another connecting port; the protection assembly comprises at least one infusion hard tube, one end of the infusion hard tube is detachably connected with the connector, and the other end of the infusion hard tube is provided with an outer connector which is the same as the connector in shape and size. When the valve rod needs to be operated to rotate, the hand can be reliably arranged on the infusion hard tube, the situation that the infusion hose is touched to be bent and accordingly the smoothness of infusion is affected is avoided, the protection effect is achieved, the infusion hose is effectively protected, and therefore the phenomenon that medical workers touch and press the infusion hose when changing medicine, and consequently infusion is not smooth is effectively avoided. And compared with an existing medical three-way valve, the medical three-way valve has better refitting performance and is suitable for being popularized and used.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a medical three-way valve for infusion. Background Art

[0002] Medical three-way valves are widely used in medical equipment, such as hemodialysis machines, blood circulators, heart instruments, etc. Among them, the three-way valve used in hemodialysis machines can separate the patient's blood from the liquid used to wash the blood, so that the blood can be fully cleaned and filtered before returning to the patient's body, thereby achieving the therapeutic effect.

[0003] The common medical three-way valve is usually composed of three connecting ports and a rotating valve shaft, two of which are directly connected to the same pipeline, and the third is directly connected to another pipeline. By rotating the valve shaft, any one of the connecting ports can be connected to another connecting port, thereby realizing the switching of the fluid pipeline (such as Figure 1 As shown in the figure, the medical three-way valve structure has the following disadvantages: since its connection port is directly connected to the infusion hose, when operating the valve shaft, the hand needs to lean on the connection port of the three-way valve for leverage to drive the valve shaft to rotate. Since the connection port is close to the valve shaft, the connection between the infusion hose and the connection port is often touched by the hand and bent when the medical staff changes the dressing (such as Figure 1 As shown), the infusion is not smooth. Utility Model Content

[0004] The utility model aims to provide a medical three-way valve for infusion, so as to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The technical solutions adopted to solve the above technical problems are:

[0006] The utility model provides a medical three-way valve for infusion, comprising: a valve body, a protective component, the valve body is provided with three connecting ports, and a valve stem, the valve stem is rotatably installed in the valve body, and the valve stem is used to connect any one of the connecting ports with another connecting port; the protective component comprises at least one infusion hard tube, one end of the infusion hard tube is detachably connected to the connecting port, and the other end of the infusion hard tube is provided with an external interface with the same shape and size as the connecting port.

[0007] The beneficial effects of the utility model are as follows: when in use, the infusion hard tube is connected to the external infusion hose through the external interface, the infusion hard tube is connected to the connecting port therein, and the infusion hose and the connecting port are connected together through the infusion hard tube. When it is necessary to control the rotation of the valve stem, the hand can be placed on the infusion hard tube to avoid touching the infusion hose and causing it to be bent, thereby affecting the smoothness of the infusion and playing a protective role. The utility model effectively protects the infusion hose, thereby effectively preventing medical staff from touching and pressing the infusion hose when changing dressings, thereby causing the infusion to be blocked. Moreover, compared with the existing medical three-way valve, the utility model has better modifiability and is suitable for popularization and use.

[0008] As a further improvement of the above technical solution, a protective shell is provided on the outer periphery of the infusion tube, and the end of the protective shell close to the connecting port is movably and adjustably connected to the infusion tube, so that the external interface enters and exits from the end of the protective shell away from the connecting port.

[0009] In order to further protect the infusion hose, after the infusion hose is connected to the external interface, the position of the protective shell is adjusted so that the connection between the external interface and the infusion hose is located inside the protective shell, so that the protective shell can effectively protect the infusion hose, effectively preventing medical staff from touching and pressing the infusion hose when changing dressings, resulting in blocked infusion.

[0010] As a further improvement of the above technical solution, a threaded hole is provided at one end of the protective shell close to the connecting port, and the infusion tube is threadedly connected to the threaded hole.

[0011] This solution adjusts the position of the protective shell on the infusion tube by rotating the protective shell so that the external interface extends from and into the protective shell. When the infusion hose needs to be disassembled, the external interface is extended from the protective shell. At this time, the protective shell is rotated to move along the infusion tube toward the end away from the external interface. When the infusion hose needs to be better protected, the protective shell is rotated in the opposite direction.

[0012] As a further improvement of the above technical solution, a threaded joint is provided at one end of the infusion tube away from the external interface, and the threaded joint is threadedly connected to the connecting port.

[0013] The infusion hard tube of this solution is threadedly connected to the connecting port through a threaded joint to achieve detachable installation.

[0014] As a further improvement of the above technical solution, the threaded joint is rotatably fixedly connected to the infusion tube.

[0015] When operating the threaded joint, it is only necessary to rotate the threaded joint, and the infusion tube does not need to be rotated, so that no torque is generated on the infusion hose, and the disassembly and assembly between the infusion tube and the connection port is convenient.

[0016] As a further improvement of the above technical solution, a sealing ring is provided between the threaded joint and the connection port, which can improve the sealing performance between the threaded joint and the connection port.

[0017] As a further improvement of the above technical solution, the outer interface is threadedly connected with the threaded connector, which is connected to the infusion hose. The infusion hose of this solution is integrally formed with the threaded connector.

[0018] As a further improvement of the above technical solution, the valve stem is provided with an indicator mark corresponding to the connection port, which can serve as an identification.

[0019] As a further improvement of the above technical solution, the infusion hard tube is a hard silicone component.

[0020] As a further improvement of the above technical solution, the infusion hard tube is a straight tube structure or a bent tube structure. The bent tube structure is convenient for medical staff to hold, and the straight tube structure is convenient for the adjustment and installation of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0022] Figure 1 This is a schematic diagram of the structure of a currently common medical three-way valve;

[0023] Figure 2 A structural cross-sectional view of the first embodiment provided by the utility model;

[0024] Figure 3 A schematic diagram of the structure of the first embodiment provided by the utility model;

[0025] Figure 4 This is a structural schematic diagram of the second embodiment provided by the utility model. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood to exclude the number, and above, below, within, etc. are understood to include the number.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference Figure 2~Figure 4 The medical three-way valve for infusion of the utility model is made into the following embodiments:

[0031] The medical three-way valve for infusion of the utility model comprises a valve body 1 and a protection component.

[0032] The valve body 1 is provided with three connection ports and a valve stem 5. The three connection ports are connection port 1 2, connection port 2 3 and connection port 3 4 respectively. The valve stem 5 is rotatably installed at the center of the valve body 1, so those skilled in the art can control the connectivity of different connection ports by rotating the valve stem 5. It should be noted that the principle of regulating connectivity of a medical three-way valve is a well-known technology to those skilled in the art, so it will not be described in detail.

[0033] The protective component includes an infusion tube, wherein the number of the infusion tubes can be determined according to actual needs. One, two or three infusion tubes can be provided. The infusion tube is a hard component. One end of the infusion tube is detachably connected to the connecting port. The other end of the infusion tube is provided with an external interface. The external interface of this embodiment is the same in shape and size as the connecting port. The valve body 1 of this embodiment adopts an existing conventional three-way valve, and the connecting port is matched and connected with the infusion hose 6, so that the external interface can also be matched and connected with the infusion hose 6.

[0034] When in use, the infusion hard tube is connected to the external infusion hose 6 through the external interface, and the infusion hard tube is connected to the connecting port therein, and the infusion hose 6 and the connecting port are connected together through the infusion hard tube. When it is necessary to control the rotation of the valve stem 5, the hand can be placed on the infusion hard tube to avoid touching the infusion hose 6 and causing it to be bent, affecting the smoothness of the infusion, thereby playing a protective role. The utility model effectively protects the infusion hose 6, thereby effectively preventing medical staff from touching and pressing the infusion hose 6 when changing medicines, resulting in the phenomenon of blocked infusion, and compared with the existing medical three-way valve, it has better modifiability and is suitable for popularization and use.

[0035] To further protect the infusion hose 6, the present invention also provides two more preferred embodiments:

[0036] Embodiment 1:

[0037] like Figure 2 and Figure 3 As shown, the infusion rigid tube of the present embodiment is set as the first infusion rigid tube 8, the external interface on the first infusion rigid tube 8 is set as the first external interface 9, and the outer periphery of the first infusion rigid tube 8 is provided with a protective shell 10, and the end of the protective shell 10 close to the connecting port is movably and adjustably connected to the first infusion rigid tube 8, so that the first external interface 9 enters and exits from the end of the protective shell 10 away from the connecting port.

[0038] After the infusion hose 6 is connected to the first external interface 9, the position of the protective shell 10 is adjusted so that the connection between the first external interface 9 and the infusion hose 6 is arranged inside the protective shell 10, so that the protective shell 10 can effectively protect the infusion hose 6, and effectively prevent the medical staff from touching and pressing the infusion hose 6 when changing the dressing, resulting in the phenomenon of blocked infusion.

[0039] In addition, a threaded hole 11 is provided at one end of the protective shell 10 close to the connecting port, and the first infusion rigid tube 8 is threadedly connected to the threaded hole 11. In this embodiment, the position of the protective shell 10 on the first infusion rigid tube 8 is adjusted by rotating the protective shell 10, so that the first external interface 9 extends from and into the protective shell 10. When the infusion hose 6 needs to be disassembled, the first external interface 9 is extended from the protective shell 10. At this time, the protective shell 10 is rotated to move the protective shell 10 along the first infusion rigid tube 8 toward the end away from the first external interface 9. When the infusion hose 6 needs to be better protected, the protective shell 10 is rotated in the opposite direction.

[0040] A first threaded joint 7 is provided at one end of the first infusion rigid tube 8 away from the first external interface 9, and the first threaded joint 7 is threadedly connected to the connecting port. The first threaded joint 7 of this embodiment is connected to the connecting port three 4, and the first infusion rigid tube 8 is threadedly connected to the connecting port three 4 through the first threaded joint 7 to achieve detachable installation.

[0041] The first external interface 9 is also threadedly connected to the first threaded joint 7 , and the first threaded joint 7 is connected to the infusion hose 6 . In this embodiment, the infusion hose 6 and the first threaded joint 7 are integrally formed.

[0042] Furthermore, the first threaded joint 7 of the present embodiment is rotatably fixedly connected to the first infusion tube 8. When operating the first threaded joint 7, it is only necessary to rotate the first threaded joint 7, and the first infusion tube 8 does not need to be rotated. In this way, no torque is generated on the infusion hose 6, thereby facilitating the disassembly and assembly between the first infusion tube 8 and the connection port three 4.

[0043] In addition, in other embodiments, a sealing ring is provided between the first threaded joint 7 and the connection port three 4 , and the sealing ring can improve the sealing between the first threaded joint 7 and the connection port three 4 .

[0044] The valve stem 5 of this embodiment is provided with an indicator mark 15 corresponding to the connection port, which can serve as an identification.

[0045] The first infusion rigid tube 8 of the present embodiment is a hard silicone member, and the first infusion rigid tube 8 is a straight tube structure.

[0046] In the present embodiment, the first threaded joint 7, the first infusion tube 8 and the protective cover 10 are preferably made of transparent ABS material with good hardness.

[0047] The infusion hose 6 of this embodiment can be indirectly connected to the connection port 3 4 through the first threaded joint 7, the first infusion hard tube 8, and the first external interface 9, so as to achieve the infusion effect.

[0048] Embodiment 2:

[0049] like Figure 4 As shown, the infusion rigid tube of the present embodiment is set as the second infusion rigid tube 13, and the external interface on the second infusion rigid tube 13 is set as the second external interface 14. The second infusion rigid tube 13 of the present embodiment is a bent tube structure. Specifically, the second infusion rigid tube 13 of the present embodiment is provided with a second threaded joint 12 at one end away from the first external interface, and the second threaded joint 12 is threadedly connected to the connecting port. The second threaded joint 12 of the present embodiment is connected to the connecting port three 4, and the second infusion rigid tube 13 is threadedly connected to the connecting port three 4 through the second threaded joint 12 to achieve detachable installation.

[0050] The second external interface 14 is also threadedly connected to a second threaded connector 12 , and the second threaded connector 12 is connected to the infusion hose 6 . In this embodiment, the infusion hose 6 and the second threaded connector 12 are integrally formed.

[0051] In this way, when a technician in this field holds it, he can hold the right-angled second infusion tube 13, thereby effectively avoiding the medical staff from pressing the infusion hose 6 when changing the dressing, resulting in a phenomenon of blocked infusion, and it has better modifiability than the existing medical three-way valve.

[0052] The preferred implementation methods of the utility model are described in detail above, but the invention of the utility model is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the utility model. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A medical three-way valve for infusion, characterized in that: include: A valve body, provided with three connection ports and a valve stem, wherein the valve stem is rotatably mounted in the valve body, and the valve stem is used to connect any one of the connection ports with another of the connection ports; The protection component comprises at least one infusion hard tube, one end of which is detachably connected to the connecting port, and the other end of which is provided with an external interface having the same shape and size as the connecting port.

2. The medical three-way valve for infusion according to claim 1, characterized in that: A protective sleeve is provided on the outer periphery of the infusion rigid tube, and one end of the protective sleeve close to the connection port is movably and adjustably connected to the infusion rigid tube, so that the external port enters and exits from one end of the protective sleeve away from the connection port.

3. The medical three-way valve for infusion according to claim 2, characterized in that: A threaded hole is provided at one end of the protective shell close to the connecting port, and the infusion hard tube is threadedly connected to the threaded hole.

4. The medical three-way valve for infusion according to claim 1, characterized in that: A threaded joint is provided at one end of the infusion hard tube away from the external interface, and the threaded joint is threadedly connected to the connecting port.

5. The medical three-way valve for infusion according to claim 4, characterized in that: The threaded joint is rotatably fixedly connected to the infusion hard tube.

6. The medical three-way valve for infusion according to claim 4, characterized in that: A sealing ring is provided between the threaded joint and the connecting port.

7. The medical three-way valve for infusion according to claim 4, characterized in that: The external interface is threadedly connected with the threaded joint.

8. The medical three-way valve for infusion according to claim 1, characterized in that: The valve stem is provided with an indicator mark corresponding to the connection port.

9. The medical three-way valve for infusion according to claim 1, characterized in that: The infusion hard tube is a hard silicone component.

10. The medical three-way valve for infusion according to any one of claims 1 to 9, characterized in that: The infusion hard tube is a straight tube structure or a bent tube structure.