Regulating valve convenient for stopping liquid for infusion apparatus

Abstract

The utility model discloses an infusion apparatus regulating valve convenient to stop liquid, which relates to the technical field of medical instruments and comprises a shell, an infusion tube is sleeved with the shell, a regulating mechanism and a liquid stopping mechanism which are distributed left and right are arranged on the shell, the regulating mechanism comprises a regulating wheel, the shell is hollow, an open groove is formed in the top of the shell, and the liquid stopping mechanism is arranged in the open groove. The two liquid stopping clamping teeth are arranged on the right side of the shell, the two liquid stopping clamping teeth are distributed on the upper side and the lower side of the liquid conveying pipe, the two liquid stopping clamping teeth are close to each other by pressing the pressing plate, and therefore the liquid conveying pipe can be closed to the upper side and the lower side of the liquid conveying pipe. The infusion tube is extruded, the interior of the infusion tube is cut off, the liquid stopping function is achieved, and the liquid stopping effect can be kept for a long time through clamping connection between the clamping hook and the pressing plate.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a regulating valve for an infusion set that facilitates fluid control. Background Technology

[0002] An infusion set is a medical device that uses an infusion regulator to directly inject drugs or liquids into the human body. It is widely used in infusion, anesthesia, blood transfusion, cell separation and other fields. It is generally composed of an intravenous needle, protective cap, Luer connector, infusion tubing, drug filter, flow regulator, drip chamber, precision filter, bottle stopper puncture device, and air inlet tube air filter connection.

[0003] Existing infusion sets are equipped with regulating valves, or flow rate regulators, which control the flow rate of the fluid within the infusion set. However, even when the regulating valve is pushed to its minimum position, the fluid continues to be delivered. Therefore, if extravasation occurs during the infusion process, even if the regulating valve is closed when the needle is removed, the fluid will continue to be squeezed into the tissue, increasing the patient's pain and causing greater damage to the puncture site, especially for highly irritating and damaging drugs. Therefore, a regulating valve that can stop the fluid delivery is needed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing regulating valves that cannot completely stop the flow of liquid, and to provide a regulating valve for infusion sets that facilitates the stopping of liquid flow.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a regulating valve for an infusion set that facilitates fluid stoppage, comprising a housing, which is fitted onto the infusion tubing. The housing is provided with a left-right distributing regulating mechanism and a fluid stoppage mechanism. The regulating mechanism includes an regulating wheel. The housing is hollow, and a groove is formed at the top of the housing, creating a roller groove on the inner side. Sliding grooves are formed on both the front and rear sides of the housing. The regulating wheel is located within the roller groove and slidably connected to the sliding groove. An opening is formed on the left side and the right side of the housing. The infusion tubing... The tube passes through the opening, roller groove, and inlet in sequence, and the infusion tube passes through the bottom of the adjusting wheel. The liquid-stopping mechanism includes two liquid-stopping teeth. A pressing plate and a support plate are fixedly connected at the opening on the right side of the outer shell. The support plate is L-shaped and has a groove. The two liquid-stopping teeth are located between the pressing plate and the support plate and are fixedly connected to the pressing plate and the support plate respectively. The two liquid-stopping teeth are staggered. A rectangular groove is opened on the support plate. The infusion tube passes through the rectangular groove and passes between the two liquid-stopping teeth. A hook is connected to the top of the support plate.

[0006] As described above, the outer shell cross-section is a right trapezoid with a smaller left side and a larger right side, and the hypotenuse and straight side of the trapezoid are the top and bottom of the outer shell, respectively. The sliding groove is parallel to the top surface of the outer shell.

[0007] As described above, a roller passes through the center of the adjusting wheel, and both ends of the roller are respectively inserted into adjacent sliding grooves, with both ends of the roller being engaged with the sliding grooves.

[0008] As described above, both ends of the roller are fitted with fixed sleeves, the top of the slide is fixedly connected with a fixed plate, and the outer side of the fixed sleeve and the bottom of the fixed plate are provided with a number of arrayed serrations, and the serrations of the fixed sleeve and the fixed plate are engaged.

[0009] As mentioned above, the cross-section of both of the aforementioned liquid-stopping teeth is triangular, and the corner of the two liquid-stopping teeth that contacts the infusion tube is an arc surface.

[0010] As described above, the hook is integrally connected to the top of the tray, and a transverse section is formed between the bottom of the hook and the inner side of the tray. The hook has a triangular cross section, and the opposing surfaces of the pressing plate and the hook are both arc surfaces.

[0011] The aforementioned outer shell, adjusting wheel, pressing plate, support plate, hook, and anti-liquid tooth are all made of polypropylene, and the outer shell, pressing plate, support plate, hook, and anti-liquid tooth are all integrally connected.

[0012] Compared with existing technologies, this easy-to-stop regulating valve for infusion sets has the following advantages:

[0013] I. This utility model provides two liquid-stopping teeth on the right side of the outer shell, which are distributed on the upper and lower sides of the infusion tube. By pressing the pressing plate, the two liquid-stopping teeth are brought close together, thereby squeezing the infusion tube and cutting off the inside of the infusion tube, thus achieving the liquid-stopping function. The liquid-stopping effect can be maintained for a long time through the interlocking between the hook and the pressing plate.

[0014] II. This utility model uses a sliding groove and a roller to make the adjusting wheel slide in the roller groove, and a fixing sleeve is set at the end of the roller. A fixing plate is set in the sliding groove, and both the fixing sleeve and the fixing plate are provided with serrations. The adjusting wheel is fixed by the engagement between the serrations, which prevents the elastic force generated when the infusion tube recovers after being squeezed from pushing the adjusting wheel back and causing the adjustment to fail.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2This is a side view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the roller and groove structure of this utility model.

[0020] In the diagram: 1. Outer shell; 2. Adjusting wheel; 3. Pressing plate; 4. Support plate; 5. Liquid-stopping tooth; 6. Hook; 7. Roller; 8. Fixing sleeve; 9. Fixing plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-4 As shown, this utility model provides a technical solution: a regulating valve for an infusion set that facilitates fluid stoppage, including a housing 1, which is fitted onto the infusion tube. The housing 1 is provided with a left-right distributing regulating mechanism and a fluid stoppage mechanism. The regulating mechanism includes an regulating wheel 2. The housing 1 is hollow, and a groove is formed on the top of the housing 1, creating a roller groove on the inner side of the housing 1. Sliding grooves are formed on both the front and rear sides of the housing 1. The regulating wheel 2 is located within the roller groove and slidably connected to the sliding groove. An opening is formed on the left side and the right side of the housing 1, through which the infusion tube passes sequentially. The system includes a roller groove and an opening, with the infusion tube passing through the bottom of the adjusting wheel 2. The liquid-stopping mechanism includes two liquid-stopping teeth 5. A pressing plate 3 and a support plate 4 are fixedly connected at the opening on the right side of the outer casing 1. The support plate 4 is L-shaped and has a groove. The two liquid-stopping teeth 5 are located between the pressing plate 3 and the support plate 4 and are fixedly connected to the pressing plate 3 and the support plate 4 respectively. The two liquid-stopping teeth 5 are staggered. A rectangular groove is opened on the support plate 4. The infusion tube passes through the rectangular groove and passes between the two liquid-stopping teeth 5. A hook 6 is connected to the top of the support plate 4.

[0023] According to the overall structure of the device, during use, the infusion speed of the infusion tube is adjusted by pushing the adjusting wheel 2 left and right. When it is necessary to stop the flow, press the pressing plate 3. The pressing plate 3 drives the upper stop-flow teeth 5 to move down, so that the distance between the upper and lower stop-flow teeth 5 gradually decreases. At this time, the two stop-flow teeth 5 squeeze the infusion tube. Due to the misalignment between the two stop-flow teeth 5, the infusion tube is bent when the two stop-flow teeth 5 are squeezed, which causes the internal channel of the infusion tube to be closed, so that the medicine cannot flow, thereby achieving the stop-flow. When the pressing plate 3 is pressed, it is engaged with the pressing plate 3 by the hook 6, thereby fixing the pressing plate 3 and making the stop-flow teeth 5 continuously squeeze the infusion tube, so as to maintain the stop-flow effect for a long time.

[0024] like Figure 3 As shown, the cross-section of the outer shell 1 is a right-angled trapezoid with a smaller left side and a larger right side. The hypotenuse and straight side of the trapezoid are the top and bottom of the outer shell 1, respectively. The sliding groove is parallel to the top surface of the outer shell 1. The center of the adjusting wheel 2 has a roller 7 through it. The two ends of the roller 7 are respectively inserted into the adjacent sliding grooves, and both ends of the roller 7 are engaged with the sliding grooves. Both ends of the roller 7 are fitted with fixing sleeves 8. The top of the sliding groove is fixedly connected to a fixing plate 9. The outer side of the fixing sleeve 8 and the bottom of the fixing plate 9 are provided with several array-shaped serrations, and the serrations of the fixing sleeve 8 and the fixing plate 9 are engaged. The serrations are oblique serrations. The oblique surface of the serrations on the fixing plate 9 faces the liquid-stopping tooth 5, and the oblique surface of the serrations on the fixing sleeve 8 and the fixing plate 9 faces opposite directions.

[0025] The adjusting wheel 2 is limited by the roller 7 and the slide groove, so that the adjusting wheel 2 can only move along the slide groove. At the same time, the adjusting wheel 2 is fixed by the engagement of the serrations between the fixing sleeve 8 and the fixing plate 9. When it is necessary to reduce the infusion rate, the adjusting wheel 2 is pushed to the left, and the adjusting wheel 2 moves to the left along the slide groove. Due to the limitation of the structure of the outer shell 1 and the position of the slide groove, the distance between the adjusting wheel 2 and the infusion tube is reduced, and the infusion tube is squeezed, so that the internal flow surface of the infusion tube is reduced, thereby reducing the infusion rate. At this time, the infusion tube deforms after being squeezed, and generates a reverse force on the adjusting wheel 2, pushing the adjusting wheel 2 to move upward, so that the serrations on the fixing sleeve 8 and the serrations on the fixing plate 9 are engaged, thereby fixing the adjusting wheel 2 and preventing the elastic force generated by the recovery of the deformation of the infusion tube from pushing the adjusting wheel 2 to move back in the opposite direction. When it is necessary to increase the infusion rate, the adjusting wheel 2 is pressed down to separate the serrations, and then the adjusting wheel 2 is pushed to the right. The adjusting wheel 2 and the infusion tube are gradually moved away, so that the infusion tube returns to its original shape, thereby increasing the infusion rate.

[0026] like Figure 1 As shown, the cross-sections of the two stop-fluid locking teeth 5 are triangular, and the corner of the two stop-fluid locking teeth 5 that contacts the infusion tube is an arc surface.

[0027] The triangular structure increases the pressure of the stopper tooth 5 on the infusion tube, and the arc surface prevents the stopper tooth 5 from damaging the infusion tube.

[0028] like Figure 1 As shown, the hook 6 is integrally connected to the top of the tray 4, and a transverse section is formed between the bottom of the hook 6 and the inner side of the tray 4. The cross section of the hook 6 is triangular, and the opposing surfaces of the pressing plate 3 and the hook 6 are both arc surfaces.

[0029] The bottom of the hook 6 forms a transverse cross section with the support plate 4. When the pressing plate 3 is pressed, the pressing plate 3 contacts the hook 6 and pushes the hook 6 to the right, thereby causing the support plate 4 to deflect to the right. When the pressing plate 3 moves to below the hook 6, the support plate 4 rebounds and resets under its own elastic force, and drives the hook 6 to reset, so that the hook 6 moves above the pressing plate 3. At this time, the pressing plate 3 abuts against the hook 6 under its own elastic force, thereby fixing the liquid-stopping tooth 5.

[0030] like Figure 1 As shown, the outer shell 1, adjusting wheel 2, pressing plate 3, support plate 4, hook 6 and liquid-stopping tooth 5 are all made of polypropylene, and the outer shell 1, pressing plate 3, support plate 4, hook 6 and liquid-stopping tooth 5 are all integrated.

[0031] The integrated connection of the outer shell 1, pressing plate 3, support plate 4, hook 6, and anti-liquid tooth 5 allows for overall mold injection molding, reducing production difficulty and cost, and improving production efficiency. The outer shell 1, adjusting wheel 2, pressing plate 3, support plate 4, hook 6, and anti-liquid tooth 5 are made of polypropylene, giving the overall structure a lightweight and highly wear-resistant character, making it convenient for long-term use. It also has elasticity and high mechanical properties, facilitating repeated bending and deflection operations of the pressing plate 3 and support plate 4, making the structure more durable.

[0032] Working principle: During use, the infusion speed of the infusion tube is adjusted by pushing the adjusting wheel 2 left and right. When it is necessary to reduce the infusion speed, push the adjusting wheel 2 to the left. The adjusting wheel 2 moves to the left along the slide groove. Due to the limitations of the outer shell 1 structure and the position of the slide groove, the distance between the adjusting wheel 2 and the infusion tube is reduced, and the infusion tube is squeezed, reducing the internal flow surface of the infusion tube at this point, thereby reducing the infusion speed. At this time, the infusion tube deforms after being squeezed, and generates a reverse force on the adjusting wheel 2, pushing the adjusting wheel 2 upward. This causes the serrations on the fixing sleeve 8 to engage with the serrations on the fixing plate 9, thereby fixing the adjusting wheel 2 and preventing the elastic force generated by the recovery of the infusion tube deformation from pushing the adjusting wheel 2 to move back in the opposite direction. When it is necessary to increase the infusion speed, press the adjusting wheel downward. 2. Separate the saw teeth, then push the adjusting wheel 2 to the right. The adjusting wheel 2 gradually moves away from the infusion tube, allowing the infusion tube to return to its original position, thereby increasing the infusion rate. When it is necessary to stop the infusion, press the pressing plate 3. The pressing plate 3 drives the upper stop-fluid locking tooth 5 to move down, causing the distance between the upper and lower stop-fluid locking teeth 5 to gradually decrease. At this time, the two stop-fluid locking teeth 5 squeeze the infusion tube. Due to the misalignment between the two stop-fluid locking teeth 5, the compression of the two stop-fluid locking teeth 5 causes the infusion tube to bend, resulting in the closure of the internal channel of the infusion tube, preventing the flow of the medicine, thus achieving the effect of stopping the infusion. When the pressing plate 3 is pressed, it is engaged with the pressing plate 3 through the hook 6, thereby fixing the pressing plate 3 and allowing the stop-fluid locking teeth 5 to continuously squeeze the infusion tube, thus maintaining the effect of stopping the infusion for a long time.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A regulating valve for an infusion set that facilitates fluid control, comprising a housing (1) fitted onto an infusion tubing, characterized in that: The outer shell (1) is provided with an adjustment mechanism and a liquid-stopping mechanism distributed on the left and right sides. The adjustment mechanism includes an adjustment wheel (2). The outer shell (1) is hollow and has a slot on the top, forming a roller groove on the inner side of the outer shell (1). The outer shell (1) has sliding grooves on both the front and rear sides. The adjustment wheel (2) is located in the roller groove and is slidably connected to the sliding groove. The outer shell (1) has an opening on the left side and an opening on the right side. The infusion tube passes through the opening, the roller groove, and the opening in sequence, and passes through the bottom of the adjustment wheel (2). The liquid-stopping mechanism includes... Includes two liquid-stopping teeth (5), and a pressing plate (3) and a support plate (4) are fixedly connected at the opening on the right side of the outer shell (1). The support plate (4) is L-shaped and has a slot. The two liquid-stopping teeth (5) are located between the pressing plate (3) and the support plate (4) and are fixedly connected to the pressing plate (3) and the support plate (4) respectively. The two liquid-stopping teeth (5) are staggered. A rectangular groove is opened on the support plate (4). The infusion tube passes through the rectangular groove and passes between the two liquid-stopping teeth (5). A hook (6) is connected to the top of the support plate (4).

2. The regulating valve for an infusion set that facilitates fluid stoppage according to claim 1, characterized in that: The outer shell (1) has a cross-section that is a right trapezoid with a smaller left side and a larger right side. The hypotenuse and straight side of the trapezoid are the top and bottom of the outer shell (1), respectively. The sliding groove is parallel to the top surface of the outer shell (1).

3. The regulating valve for an infusion set that facilitates fluid stoppage according to claim 1, characterized in that: The center of the adjusting wheel (2) has a roller (7) through it. The two ends of the roller (7) are respectively inserted into the adjacent sliding grooves, and the two ends of the roller (7) are engaged with the sliding grooves.

4. The regulating valve for an infusion set that facilitates fluid stoppage according to claim 3, characterized in that: Both ends of the roller (7) are fitted with fixing sleeves (8), and the top of the slide is fixedly connected with a fixing plate (9). The outer side of the fixing sleeve (8) and the bottom of the fixing plate (9) are provided with a number of arrayed serrations, and the fixing sleeve (8) and the serrations of the fixing plate (9) are engaged.

5. A regulating valve for an infusion set that facilitates fluid stoppage according to claim 1, characterized in that: Both of the aforementioned liquid-stopping teeth (5) have triangular cross sections, and the corner of the two liquid-stopping teeth (5) that contacts the infusion tube is an arc surface.

6. A regulating valve for an infusion set that facilitates fluid stoppage according to claim 1, characterized in that: The hook (6) is integrally connected to the top of the tray (4), and a transverse section is formed between the bottom of the hook (6) and the inner side of the tray (4). The cross section of the hook (6) is triangular, and the opposing surfaces of the pressing plate (3) and the hook (6) are both arc surfaces.

7. A regulating valve for an infusion set that facilitates fluid stoppage according to claim 1, characterized in that: The outer shell (1), adjusting wheel (2), pressing plate (3), support plate (4), hook (6) and liquid-stopping tooth (5) are all made of polypropylene, and the outer shell (1), pressing plate (3), support plate (4), hook (6) and liquid-stopping tooth (5) are all integrally connected.

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