Infusion apparatus and infusion apparatus device
By introducing a pressurized device and a one-way valve structure into the infusion device, the problem of residual Chinese medicine liquid in intravenous infusion is solved, the effective delivery of the medicine liquid and the maintenance of the sterile environment are achieved, and the operation process is simplified.
Patent Information
- Application Number
- CN202420350559.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-02-26
AI Technical Summary
Existing infusion devices are prone to residual liquid during intravenous infusion, especially when the external air pressure is too low or the soft bag tilt angle is too large, resulting in the infusion of the liquid that cannot be completely exhausted, and the sterile environment may be damaged when processing residual liquid. Increase the labor volume of medical staff.
An infusion device including an infusion pipeline, a pressurized branch and a pressurized device is designed, by providing a first one-way valve and a second one-way valve in the infusion pipeline, and adjusting the pressure of both using a pressurized device. , ensure that the residual liquid can be effectively sent out at the end of the infusion, and reduce the residue of the liquid.
It effectively reduces the residue of the medicine during intravenous infusion, ensures the efficacy of the medicine, and maintains the sterile environment of the infusion process, simplifies the operation process of medical staff.
Smart Images
Figure CN222218351U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, and more specifically, to an infusion set and an infusion set device. Background Art
[0002] Infusion sets are common medical devices, mainly used for intravenous infusion in hospitals. Common infusion sets include a bottle needle, a drip bucket, a flow regulator, and a connector for connecting an intravenous needle. The bottle needle is used to insert the infusion bag so that the liquid in the infusion bag flows into the infusion set. By adjusting the flow regulator, the drip rate of the liquid in the drip bucket can be adjusted, thereby achieving the flow rate adjustment of intravenous infusion.
[0003] However, most of the infusion bags currently used are soft bags, which rely on external air pressure to squeeze the bag body and gravity to achieve drug infusion. If the external air pressure is too low or the soft bag is tilted at too large an angle, the infusion cannot be completed smoothly, resulting in residual drug. In addition, when infusing drug in clinical practice, some drug is likely to remain at the mouth of the infusion bag bottle and cannot be completely infused, which may cause the drug efficacy to fail to meet clinical needs. In clinical practice, the bottle insertion needle can be retracted when the infusion is about to end to minimize the residual drug, but this operation may cause the bottle insertion needle to directly withdraw from the bottle stopper, which fails to meet the sterility requirements and increases the workload of medical staff. Therefore, residual drug is generally not handled clinically.
[0004] In summary, how to effectively solve the problem of drug residue in intravenous infusion is a problem that technicians in this field need to solve. Utility Model Content
[0005] In view of this, the purpose of the present invention is to provide an infusion set and an infusion set device, the structural design of which can effectively solve the problem of drug residue in intravenous infusion.
[0006] In order to achieve the above object, the utility model provides the following technical solutions:
[0007] An infusion pump comprises an infusion pipeline, wherein the first end of the infusion pipeline is used to connect to a liquid storage component, and the second end is used to connect to a venous needle. The infusion pipeline also comprises a pressurizing branch and a pressurizing device connected to the pressurizing branch, wherein the two ends of the pressurizing branch are respectively connected to the infusion pipeline, a first one-way valve is provided in the pressurizing branch near the first end, and a second one-way valve is provided spaced from the first one-way valve, the first one-way valve and the second one-way valve allow liquid to flow from the first end to the second end, the pressurizing device is connected between the first one-way valve and the second one-way valve, and the pressurizing device is used to adjust the pressure between the first one-way valve and the second one-way valve.
[0008] Optionally, in the above-mentioned infusion pump, the pressurizing device includes a sleeve connected to the pressurizing branch and a dynamic piston arranged in the sleeve, the dynamic piston is sealed with the sleeve, and the dynamic piston can slide along the sleeve to open the first one-way valve and the second one-way valve alternately.
[0009] Optionally, in the above-mentioned infusion pump, the pressurizing device also includes a fixed piston sealed to the sleeve and a push rod connected to the moving piston, the fixed piston is located at an end of the moving piston away from the pressurizing branch, and the push rod passes through the fixed piston and is sealed with the fixed piston.
[0010] Optionally, the above-mentioned infusion pump further includes a driving component connected to the movable piston, and the driving component is used to drive the movable piston to move linearly.
[0011] Optionally, in the above-mentioned infusion pump, the pressurization branch is further provided with a first liquid-stopping component for opening or closing the pressurization branch.
[0012] Optionally, in the above-mentioned infusion set, the first liquid-stopping component is arranged at an end of the second one-way valve away from the first one-way valve.
[0013] Optionally, in the above-mentioned infusion pump, both ends of the pressurization branch are connected to the infusion pipeline through a tee respectively.
[0014] Optionally, in the above-mentioned infusion pump, a drip bucket and a flow regulator are provided in the infusion pipeline located between the two tees, and the flow regulator is provided between the outlet of the drip bucket and the tee.
[0015] Optionally, in the above-mentioned infusion pump, a second liquid-stopping component is provided between the pressurizing branch and the first end.
[0016] The infusion set provided by the utility model comprises an infusion pipeline, a pressurizing branch and a pressurizing device. The first end of the infusion pipeline is used to connect to the liquid storage component, the second end is used to connect to the venous needle, the two ends of the pressurizing branch are respectively connected to the infusion pipeline, a first one-way valve and a second one-way valve are arranged in the pressurizing branch, the first one-way valve is close to the first end, the second one-way valve is spaced from the first one-way valve, the first one-way valve and the second one-way valve allow liquid to flow from the first end to the second end, the pressurizing device is connected to the pressurizing branch, and the connection position is located between the first one-way valve and the second one-way valve, and the pressurizing device is used to adjust the pressure between the first one-way valve and the second one-way valve.
[0017] When the infusion device provided by the utility model is used, the first end of the infusion pipeline is connected to the liquid storage component, and the second end is connected to the intravenous needle during infusion. During normal infusion, the infusion pipeline can normally transport the medicine liquid, and the pressurizing branch does not work at this time. When the infusion is about to end and the residual medicine liquid in the liquid storage component cannot be completely drained, the pressurizing device is used to increase the pressure between the first one-way valve and the second one-way valve, the second one-way valve is opened, and the first one-way valve is closed, so that the medicine liquid between the first one-way valve and the second one-way valve can be delivered. Then the pressurizing device is depressurized, the pressure between the first one-way valve and the second one-way valve is reduced, the second one-way valve is closed, and the first one-way valve is opened, so that the residual medicine liquid in the liquid storage component is sucked between the first one-way valve and the second one-way valve. Then the pressurizing device is pressurized again, the second one-way valve is opened, and the first one-way valve remains closed, and the medicine liquid between the first one-way valve and the second one-way valve is delivered. The reciprocating cycle is performed until at least most of the residual medicine liquid in the liquid storage component is sucked away, and the infusion process is completed. In summary, the present application provides an infusion device that is not prone to residual drug solution during intravenous infusion, thereby ensuring good drug efficacy and not affecting the sterile environment of the infusion.
[0018] In order to achieve the above object, the utility model also provides an infusion device, which includes any of the above infusion devices. Since the above infusion devices have the above technical effects, the infusion device having the infusion device should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 This is a schematic diagram of the structure of an infusion device according to a specific embodiment of the utility model;
[0021] Figure 2 for Figure 1 A partial enlarged schematic diagram of
[0022] Figure 3 for Figure 1 A schematic diagram of the pressurized state of the intermediate pressurizing device;
[0023] Figure 4 for Figure 3 Schematic diagram of the corresponding pressure relief state.
[0024] The following are marked in the accompanying drawings:
[0025] Infusion set 100, liquid storage component 200, intravenous needle 300;
[0026] Infusion pipeline 110, pressurizing branch 120, first one-way valve 130, second one-way valve 140, pressurizing device 150, first liquid-stopping component 160, three-way 170, drip bucket 111, flow regulator 112, second liquid-stopping component 113, bottle insertion needle 114;
[0027] Sleeve 151 , movable piston 152 , fixed piston 153 , push rod 154 . DETAILED DESCRIPTION
[0028] The utility model discloses an infusion set and an infusion set device, which are used to reduce the residual medicine solution during intravenous infusion.
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] In a specific embodiment, see Figure 1-Figure 2The infusion set 100 provided by the utility model includes an infusion pipeline 110, a pressurizing branch 120 and a pressurizing device 150. Among them, the first end of the infusion pipeline 110 is used to connect the liquid storage component 200, and the second end is used to connect the intravenous needle 300. Specifically, the first end is connected to the bottle insertion needle 114. The two ends of the pressurizing branch 120 are respectively connected to the infusion pipeline 110, specifically connected to different positions of the infusion pipeline 110. A first one-way valve 130 and a second one-way valve 140 are arranged in the pressurizing branch 120, the first one-way valve 130 is close to the first end, and the second one-way valve 140 is spaced from the first one-way valve 130. The first one-way valve 130 and the second one-way valve 140 allow the liquid to flow in the same direction, both flowing from the first end to the second end. It can be understood that the first one-way valve 130 and the second one-way valve 140 can be set separately or integrated into an integral valve group. When the first check valve 130 and / or the second check valve 140 are closed, the pressurizing branch 120 is closed and no liquid is supplied to the second end. The pressurizing device 150 is in communication with the pressurizing branch 120, and the connection position is located between the first check valve 130 and the second check valve 140. The pressurizing device 150 is used to adjust the pressure between the first check valve 130 and the second check valve 140. When liquid remains in the liquid storage part 200, the pressurizing device 150 releases pressure to reduce the pressure between the first check valve 130 and the second check valve 140. At this time, the first check valve 130 is opened and the second check valve 140 is closed, so that the liquid medicine in the liquid storage part 200 is sucked between the first check valve 130 and the second check valve 140, and then the pressurizing device 150 is pressurized. At this time, the second check valve 140 is opened and the first check valve 130 is closed, so that the liquid medicine between the first check valve 130 and the second check valve 140 is delivered to the second end. It is understandable that the portion between the first one-way valve 130 and the second one-way valve 140 includes both the portion of the pressurizing branch 120 located between the first one-way valve 130 and the second one-way valve 140 and the portion within the pressurizing device 150 connected to the pressurizing branch 120 .
[0031] When using the infusion device 100 provided by the utility model, the first end of the infusion line 110 is connected to the liquid storage component 200, and the second end is connected to the intravenous needle 300. During normal infusion, the infusion line 110 can normally transport the liquid medicine, and the pressurizing branch 120 does not work at this time. When the infusion is about to end and the residual liquid medicine in the liquid storage component 200 cannot be completely drained, the pressurizing device 150 is used to increase the pressure between the first one-way valve 130 and the second one-way valve 140, so that the second one-way valve 140 is opened and the first one-way valve 130 is closed. Figure 3 As shown, the liquid medicine between the first check valve 130 and the second check valve 140 can be delivered. Then the pressure of the pressurizing device 150 is released, and the pressure between the first check valve 130 and the second check valve 140 is reduced, the second check valve 140 is closed, and the first check valve 130 is opened. Figure 4 As shown, the residual liquid medicine in the liquid storage component 200 is sucked into the space between the first one-way valve 130 and the second one-way valve 140. Then the pressurizing device 150 is pressurized again, the second one-way valve 140 is opened, and the first one-way valve 130 remains closed, so that the liquid medicine between the first one-way valve 130 and the second one-way valve 140 is delivered. The reciprocating cycle is performed until at least most of the residual liquid medicine in the liquid storage component is sucked away, and the infusion process is completed. In summary, the infusion device 100 provided in the present application is not prone to residual liquid medicine during intravenous infusion, thereby ensuring good drug efficacy and not affecting the sterile environment of the infusion.
[0032] In some embodiments, the pressurizing device 150 includes a sleeve 151 connected to the pressurizing branch 120 and a movable piston 152 disposed in the sleeve 151. The movable piston 152 is sealed with the sleeve 151, and the movable piston 152 can slide along the sleeve 151 to alternately open the first check valve 130 and the second check valve 140. That is, when the movable piston 152 moves along the sleeve 151, for the convenience of description, the movement of the movable piston 152 toward one side of the first check valve 130 and the second check valve 140 is called forward movement, and the reverse movement is called backward movement. Then, when the movable piston 152 moves forward, the volume of the part in the sleeve 151 connected to the pressurizing branch 120 decreases, and the pressure between the first check valve 130 and the second check valve 140 increases; conversely, when the movable piston 152 moves backward, the volume of the part in the sleeve 151 connected to the pressurizing branch 120 increases, and the pressure between the first check valve 130 and the second check valve 140 decreases. The pressurizing device 150 adopts the above-mentioned setting, has a simple structure, and is convenient for pressure regulation. Specifically, the first one-way valve 130 and the second one-way valve 140 are alternately opened as the pressure between the two changes, that is, when the pressure between the first one-way valve 130 and the second one-way valve 140 increases, the positive pressure difference on both sides of the second one-way valve 140 is greater than its opening pressure, then the second one-way valve 140 is opened, and the first one-way valve 130 is closed accordingly. When the pressure between the first one-way valve 130 and the second one-way valve 140 decreases, the positive pressure difference on both sides of the first one-way valve 130 is greater than its opening pressure, then the first one-way valve 130 is opened, and the second one-way valve 140 is closed accordingly. Specifically, the opening pressure of the first one-way valve 130 and the opening pressure of the second one-way valve 140 can be selected and set respectively as needed. In some embodiments, the first one-way valve 130 and the second one-way valve 140 can also adopt electrically controlled one-way valves and be connected to a controller, and the controller controls the automatic opening and closing of the first one-way valve 130 and the second one-way valve 140. In other embodiments, the first one-way valve 130 and the second one-way valve 140 may also be manual one-way valves, so as to be manually controlled to be opened or closed respectively.
[0033] In some embodiments, the pressurizing device 150 further includes a fixed piston 153 sealed in the sleeve 151 and a push rod 154 connected to the moving piston 152, the fixed piston 153 is located at one end of the moving piston 152 away from the pressurizing branch 120, and the push rod 154 is penetrated by the fixed piston 153 and sealed with the fixed piston 153. By arranging the fixed piston 153 relatively fixed to the sleeve 151 in the sleeve 151, it cooperates with the moving piston 152, and when the moving piston 152 is pushed forward by the push rod 154, a negative pressure is formed between the moving piston 152 and the fixed piston 153, so that the moving piston 152 can move backward under the action of the negative pressure, which is further convenient for user operation. The sealing between the moving piston 152, the fixed piston 153 and the sleeve 151 can specifically adopt a sealing ring.
[0034] In some embodiments, the infusion device 100 further includes a driving component connected to the movable piston 152, and the driving component is used to drive the movable piston 152 to move linearly. The movable piston 152 is driven to move by the driving component, and no manual operation is required, which further saves labor. The driving component can specifically be a telescopic cylinder such as a cylinder. The driving component can be connected to a controller to achieve automatic control under the action of the controller.
[0035] In other embodiments, the pressurizing device 150 may also adopt other variable volume structures to achieve pressure regulation, such as the pressurizing device 150 adopts a flexible bag, the flexible bag is inflated or the flexible bag is flattened to achieve pressure regulation between the first one-way valve 130 and the second one-way valve 140.
[0036] In some embodiments, the pressurized branch 120 is further provided with a first liquid-stopping component 160 for opening or closing the pressurized branch 120. By providing the first liquid-stopping component 160, the pressurized branch 120 can be conveniently switched to an open or closed state. The first liquid-stopping component 160 can be a liquid-stopping clamp for convenient manual control.
[0037] Furthermore, the first liquid-stopping member 160 is disposed at one end of the second one-way valve 140 away from the first one-way valve 130. Then, when the first liquid-stopping member 160 is closed, even if the pressurizing device 150 is pressurized, the liquid medicine located above the first liquid-stopping member 160 of the pressurizing branch 120 will not be output to the second end, thereby improving the reliability of the opening and closing state of the pressurizing branch 120. In other embodiments, the first liquid-stopping member 160 may also be disposed at one end of the first one-way valve 130 away from the second one-way valve 140.
[0038] In some embodiments, both ends of the pressurized branch 120 are connected to the infusion line 110 through a tee 170. By setting the tee 170, it is convenient to connect the pressurized branch 120 in parallel with the infusion line 110. The first interface of the tee 170 is connected to the main infusion pipe of the infusion line 110, and the second interface and the third interface of the tee 170 are respectively connected to the pressurized branch 120 and the infusion branch of the infusion line 110, so that the medicine at the first end can enter the pressurized branch 120 or the infusion branch through the main infusion pipe, and the medicine in the pressurized branch 120 or the infusion branch can enter the main infusion pipe and then be transported to the second end. Specifically, the second interface and the third interface are arranged in parallel and parallel to the first interface, so that the medicine can pass smoothly under the action of gravity.
[0039] In some embodiments, a drip bucket 111 and a flow regulator 112 are provided in the infusion line 110 between the two tees 170, and the flow regulator 112 is provided between the outlet of the drip bucket 111 and the tee 170. The drip bucket 111 is mainly used to guide the liquid medicine into the infusion system and plays a role in storing the liquid medicine. In addition, the drip bucket 111 is also convenient for medical staff to observe the flow rate of the liquid medicine and the height of the liquid medicine level, so as to adjust the infusion speed and ensure the correct input of the medicine. The flow regulator 112 can manually adjust the flow rate. The pressurized branch 120 is connected in parallel with the drip bucket 111 and the flow regulator 112. When the residual liquid medicine in the liquid storage component 200 is sucked in through the pressurized branch 120, the liquid medicine does not need to pass through the drip bucket 111 and the flow regulator 112, so it is convenient to transport less liquid medicine to the second end.
[0040] In some embodiments, a second liquid stopping component 113 is provided between the pressurizing branch 120 and the first end. The second liquid stopping component 113 can control the connection and disconnection between the first end and the pressurizing branch 120 and the infusion pipeline 110 below, so as to control the connection and disconnection between the infusion device 100 as a whole and the liquid storage component 200. The second liquid stopping component 113 can be a liquid stopping clamp.
[0041] The following is an explanation using a specific embodiment. In this embodiment, the pressurizing device 150 includes a sleeve 151 and a movable piston 152 and a fixed piston 153 arranged in the sleeve 151. A first one-way valve 130 and a second one-way valve 140 are arranged in the pressurizing branch 120, and a first liquid-stopping component 160 is arranged in the pressurizing branch 120. A second liquid-stopping component 113 is arranged between the pressurizing branch 120 and the first end. A drip bucket 111 and a flow regulator 112 are arranged in the part of the infusion pipeline 110 connected in parallel with the pressurizing branch 120. During normal infusion, the first liquid-stopping component 160 is closed, the second liquid-stopping component 113 is opened, and the flow rate is controlled by adjusting the flow regulator 112. When the infusion is nearing the end and there is residual liquid in the liquid storage component 200 that cannot be drained out, the flow regulator 112 is closed, the first liquid-stopping component 160 is opened, and the movable piston 152 moves forward. At this time, the states of the first one-way valve 130 and the second one-way valve 140 are as follows: Figure 3 As shown, negative pressure is formed between the fixed piston 153 and the movable piston 152. Under the action of the negative pressure, the movable piston 152 moves backward, and the first one-way valve 130 is opened, and the second one-way valve 140 is closed, so that the residual liquid in the liquid storage part 200 is sucked into the space between the first one-way valve 130 and the second one-way valve 140. Figure 4 Then push the push rod 154 forward, the first check valve 130 is closed, the second check valve 140 is opened, and the liquid medicine between the first check valve 130 and the second check valve 140 is delivered into the human body. The reciprocating speed of the push rod 154 can be manually controlled, and the flow rate can also be controlled until most of the residual liquid medicine in the liquid storage part 200 is sucked away, completing the whole process.
[0042] Based on the infusion set provided in the above embodiments, the utility model further provides an infusion set device, which includes any one of the infusion sets 100 in the above embodiments and a liquid storage component 200 and a venous needle 300 that cooperate with the infusion set 100. The liquid storage component 200 can be a soft bag. Since the infusion set device adopts the infusion set in the above embodiments, please refer to the above embodiments for the beneficial effects of the infusion set device.
[0043] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An infusion set, comprising an infusion line (110), wherein a first end of the infusion line (110) is used to connect to a liquid storage component (200), and a second end of the infusion line (110) is used to connect to a venous needle (300), characterized in that: The invention also comprises a pressurizing branch (120) and a pressurizing device (150) connected to the pressurizing branch (120); the two ends of the pressurizing branch (120) are respectively connected to the infusion pipeline (110); a first one-way valve (130) is provided in the pressurizing branch (120) near the first end and a second one-way valve (140) is provided spaced apart from the first one-way valve (130); the first one-way valve (130) and the second one-way valve (140) allow liquid to flow from the first end to the second end; the pressurizing device (150) is connected between the first one-way valve (130) and the second one-way valve (140); the pressurizing device (150) is used to adjust the pressure between the first one-way valve (130) and the second one-way valve (140).
2. The infusion set according to claim 1, characterized in that: The pressurizing device (150) comprises a sleeve (151) connected to the pressurizing branch (120) and a movable piston (152) arranged in the sleeve (151); the movable piston (152) is sealed with the sleeve (151); and the movable piston (152) can slide along the sleeve (151) to enable the first one-way valve (130) and the second one-way valve (140) to be opened alternately.
3. The infusion set according to claim 2, characterized in that: The pressurizing device (150) further comprises a fixed piston (153) sealed to the sleeve (151) and a push rod (154) connected to the movable piston (152); the fixed piston (153) is located at an end of the movable piston (152) away from the pressurizing branch (120); and the push rod (154) passes through the fixed piston (153) and is sealed to the fixed piston (153).
4. The infusion set according to claim 2, characterized in that: It also includes a driving component connected to the movable piston (152), and the driving component is used to drive the movable piston (152) to move linearly.
5. The infusion set according to any one of claims 1 to 4, characterized in that: The pressurizing branch (120) is also provided with a first liquid-stopping component (160) for opening or closing the pressurizing branch (120).
6. The infusion set according to claim 5, characterized in that: The first liquid-stopping component (160) is arranged at an end of the second one-way valve (140) away from the first one-way valve (130).
7. The infusion set according to any one of claims 1 to 4, characterized in that: Both ends of the pressurizing branch (120) are connected to the infusion pipeline (110) via a tee (170) respectively.
8. The infusion set according to claim 7, characterized in that: A drip bucket (111) and a flow regulator (112) are provided in the infusion pipeline (110) located between the two tees (170); the flow regulator (112) is provided between the outlet of the drip bucket (111) and the tee (170).
9. The infusion set according to any one of claims 1 to 4, characterized in that: A second liquid-stopping component (113) is provided between the pressurizing branch (120) and the first end.
10. An infusion device, characterized in that: It comprises an infusion set (100) as claimed in any one of claims 1 to 9, and a liquid storage component (200) and a venous needle (300) matched with the infusion set (100).