Disposable infusion apparatus for preventing infusion bottle from being inserted and pulled
By designing upper and lower fixing sleeves, combined with limiting structures and protective components, the problem of easy breakage of the connection between the infusion bottle and the infusion tube due to external stress is solved, achieving stable connection and safe infusion, and reducing medical risks and costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU PEOPLES HOSPITAL
- Filing Date
- 2024-12-30
- Publication Date
- 2026-04-21
AI Technical Summary
The connection between traditional infusion bottles and infusion tubing is susceptible to breakage or needle detachment due to external stress, affecting the continuity of infusion and potentially causing harm to the patient.
The design employs an upper and lower fixing sleeve, combined with a first limiting structure, a second limiting structure, and protective components, to achieve dual limiting of the infusion bottle opening and the infusion tube. Through the adaptive clamping of the shaft snap ring and spring sheet, external stress is dispersed to prevent breakage at the connection or needle detachment.
It improves the stability and safety of infusion connections, reduces the risk of medical accidents, avoids cross-contamination and infection, reduces patients' medical costs, and supports reuse after high-temperature and high-pressure sterilization.
Smart Images
Figure CN224141285U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically a disposable infusion set for preventing insertion and removal of drip bottles. Background Technology
[0002] During medical infusion, ensuring a stable connection between the infusion bottle and the infusion tubing is crucial. Traditional connection methods for infusion bottles and tubing are susceptible to breakage or needle detachment due to external stress, which not only affects the continuity of the infusion but may also cause unnecessary harm to the patient. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a disposable infusion set for preventing insertion and removal of IV bottles, which solves the problem that the connection between traditional IV bottles and IV tubing is easily damaged or broken due to external stress loading, or that the IV tubing needle detaches from the IV bottle.
[0004] To achieve the above objectives, this utility model provides a disposable infusion set for preventing insertion and removal of an infusion bottle, comprising an upper fixing sleeve and a lower fixing sleeve. The upper fixing sleeve has a through hole along its height direction for insertion into an external infusion bottle nozzle. The through hole connects to the outer peripheral wall of the upper fixing sleeve and forms a notch. The upper fixing sleeve is provided with a first limiting structure for applying force to the upper fixing sleeve so that the through hole adaptively clamps and limits the outer peripheral wall of the external infusion bottle nozzle. The lower fixing sleeve has a through hole along its height direction for external infusion tubing to pass through. The lower fixing sleeve is provided with a second limiting structure for limiting the external infusion tubing. A protective component is connected between the upper and lower fixing sleeves to prevent external stress from being applied at the connection between the infusion bottle and the infusion tubing.
[0005] The advantages of adopting the above technical solution are as follows: The combined use of the upper and lower fixing sleeves achieves dual limiting of the infusion bottle opening and the infusion tubing, ensuring connection stability. The first limiting structure can adaptively and clamp the outer peripheral wall of the infusion bottle opening, while the second limiting structure effectively limits the infusion tubing, preventing damage caused by external stress. Furthermore, the protective component further enhances the stability of the connection between the infusion bottle and the infusion tubing, avoiding accidental disconnection or needle detachment. This technical design not only improves the safety of infusion but also reduces medical accidents. Therefore, this technology is of great significance for improving the quality of medical services. In the aforementioned technology, when installation is required, the upper fixing sleeve is fitted with the infusion bottle nozzle, and the lower fixing sleeve is fitted with the infusion tubing. When the upper and lower fixing sleeves are fitted, the protective component is simultaneously installed to protect the connection between the infusion bottle and the infusion tubing. This prevents external stress from acting on the connection between the infusion bottle and the infusion tubing, which could cause the needle to detach from the infusion bottle or bend and break. Furthermore, this technology does not involve direct contact with the liquid inside the infusion tubing or infusion bottle, thus avoiding medical contamination. Moreover, this technology is a disposable medical device, thus preventing leakage. To address the issue of cross-contamination or infection, this technology utilizes low-cost plastic or rubber materials, thereby reducing costs and preventing increased medical expenses for patients. Furthermore, the materials used in this technology can be customized to meet specific needs, such as being designed for high-temperature, high-pressure, or steam sterilization, enabling reuse. Since this technology does not come into direct or indirect contact with medical fluids or patient bodily fluids, it can be reused after high-temperature, high-pressure, or steam sterilization, thus improving practicality and applicability while also reducing treatment costs for patients. In existing technologies… When an external force is applied to the infusion tubing, causing it to bear a force along its opening direction, this force is transmitted to the needle, causing the needle to separate from the infusion bottle. However, the upper and lower fixing sleeves and the protective component in this technology ensure that when an external force is applied to the infusion tubing, causing it to bear a force along its opening direction, this force acts on the lower fixing sleeve and is transmitted to the upper fixing sleeve through the protective component. In other words, most of the force acts directly on the lower fixing sleeve, the protective component, and the upper fixing sleeve, reducing the force on the infusion tubing itself and thus improving the connection strength between the infusion tubing and the infusion bottle.
[0006] The present invention further includes: the upper fixed sleeve having a cavity circumferentially open; the first limiting structure includes a shaft retaining spring filled in the cavity; the radial force loading direction of the shaft retaining spring is set towards the axis of the insertion hole.
[0007] The advantages of adopting the above technical solution are: the setting of the shaft snap ring in the above technology is used to apply a force to the inner peripheral wall of the cavity. The loading direction of the force is set towards the axis of the insertion hole, so that the force directly drives the upper fixing sleeve to deform. Because the upper fixing sleeve has a notch, the upper fixing sleeve can deform and clamp and limit the infusion bottle nozzle, thereby realizing the connection between the upper fixing sleeve and the infusion bottle, thereby improving the installation efficiency and the connection strength between the two.
[0008] This utility model further includes: two actuating plates arranged opposite each other on the outer peripheral wall of the upper fixed sleeve for external medical personnel to pry open; the two actuating plates are respectively arranged on both sides of the notch; the actuating plates are integrally connected to the upper fixed sleeve; the radial section of the shaft retaining spring is horseshoe-shaped and both ends of the shaft retaining spring extend towards the adjacent actuating plates; each of the extension ends is embedded in the actuating plate; the two actuating plates are fitted together to form a spreading gap for external medical personnel to insert their fingers and spread the two actuating plates; and the inner walls of the two actuating plates are provided with friction protrusions.
[0009] The advantages of the above technical solution are as follows: When the operator needs to install or remove the upper fixing sleeve, the operator inserts their fingers into the opening gap and pries open the prying plate to gradually widen the opening gap, thereby causing the upper fixing sleeve to deform, making the diameter of the insertion hole larger than the diameter of the infusion bottle nozzle. This allows the upper fixing sleeve to be fitted onto the infusion bottle nozzle. After the upper fixing sleeve is fitted onto the bottle mouth, the operator releases their fingers, causing the shaft retaining spring to apply force to the inner peripheral wall of the cavity, thereby causing the upper fixing sleeve to deform, causing the insertion hole to tighten and form a clamping force on the infusion bottle nozzle. The locking mechanism allows the upper fixing sleeve to adaptively clamp and limit the infusion bottle nozzle, thereby increasing the connection strength between the two. Simultaneously, it avoids direct or indirect contact with the infusion bottle nozzle's outlet, thus preventing contamination. The extended end in the above technology is designed to drive the actuating plate to reset together when the upper fixing sleeve is reset by the deformation of the shaft retaining spring, facilitating the actuating plate's movement. The friction protrusions in the above technology further improve the efficiency of the actuating plate movement by medical personnel, i.e., increase the friction torque between the medical personnel's fingers and the actuating plate.
[0010] The present invention further comprises: the second limiting structure including a limiting sleeve sleeved on the outer peripheral wall of the lower fixed sleeve, the inner peripheral wall of the limiting sleeve being threadedly connected to the outer peripheral wall of the lower fixed sleeve, the through hole communicating with the outer peripheral wall of the lower fixed sleeve and forming a deformation groove, the deformation groove communicating with the end faces of both ends of the lower fixed sleeve, a plurality of spring pieces being circumferentially arranged on the inner peripheral wall of the through hole, the plurality of spring pieces being evenly distributed circumferentially on the inner peripheral wall of the through hole, each spring piece consisting of two ends and a raised portion, both ends of the spring piece being connected to the inner peripheral wall of the through hole, and the raised portion of the spring piece being oriented towards the axis of the through hole.
[0011] The advantages of adopting the above technical solution are: when the lower fixing sleeve needs to be installed, the operator can put the lower fixing sleeve on the infusion tube. Because the diameter of the perforation is larger than the diameter of the infusion tube, the lower fixing sleeve can be easily put on the infusion tube. Then the operator screws in the limiting sleeve so that the limiting sleeve is threadedly connected to the outer peripheral wall of the lower fixing sleeve. At this time, the limiting sleeve squeezes the lower fixing sleeve. Due to the setting of the deformation groove, the lower fixing sleeve is squeezed and deformed, which reduces the diameter of the perforation. At this time, the perforation drives the spring piece to simultaneously abut against the outer peripheral wall of the infusion tube, thereby achieving clamping and limiting of the infusion tube, and thus improving the connection strength between the infusion tube and the lower fixing sleeve.
[0012] The present invention further comprises: the protective component including a protective sleeve disposed between the upper fixed sleeve and the lower fixed sleeve, the protective sleeve having a through hole for an external infusion tube to pass through, the beginning of the protective sleeve being connected to the end of the upper fixed sleeve, the end of the protective sleeve being connected to the beginning of the lower fixed sleeve, and the diameter of the through hole gradually decreasing from the beginning to the end of the protective sleeve.
[0013] The advantages of adopting the above technical solution are: the protective sleeve in the above technology avoids external stress or sharp objects from acting directly on the connection between the infusion tube and the infusion bottle, so as to avoid the phenomenon of breakage or damage at the connection between the two or the separation of the needle from the infusion bottle. At the same time, the protective sleeve can also avoid stress from being directly concentrated at the connection between the infusion bottle and the infusion tube, thereby achieving stress dispersion, thereby improving the protection strength and protection efficiency. In addition, the diameter of the through hole gradually decreases from the beginning to the end of the protective sleeve, which facilitates the installation or removal by medical staff.
[0014] The present invention further comprises: the protective sleeve is an elastic corrugated tube made by connecting foldable corrugated sheets along the folding and stretching direction.
[0015] The advantages of adopting the above technical solution are: the protective sleeve in the above technology is an elastic corrugated tube made of foldable corrugated sheets connected along the folding and stretching direction, that is, the protective sleeve can be stretched or contracted along its folding direction to adapt to the length of the connection. At the same time, when an external force is applied to the infusion tube and the infusion tube is subjected to the force in its opening direction, the force can be transmitted to the protective sleeve through the lower fixed sleeve. Because the protective sleeve has elasticity, it can withstand or offset part of the force when it stretches and contracts. Furthermore, it can also withstand part of the force itself, thereby improving the connection strength between the upper fixed sleeve and the lower fixed sleeve and the protection strength between the infusion bottle and the infusion tube. Attached Figure Description
[0016] Figure 1 This is a three-dimensional view of the present invention in conjunction with an external infusion bottle and infusion tubing;
[0017] Figure 2 This is an exploded three-dimensional view of the present invention. Detailed Implementation
[0018] This utility model provides a disposable infusion set for preventing insertion and removal of an infusion bottle, comprising an upper fixing sleeve 1 and a lower fixing sleeve 2. The upper fixing sleeve 1 has a through hole 11 for inserting into an external infusion bottle nozzle along its height direction. The through hole 11 connects to the outer peripheral wall of the upper fixing sleeve 1 and forms a notch 111. The upper fixing sleeve 1 is provided with a first limiting structure for applying force to the upper fixing sleeve 1 so that the through hole 11 adaptively clamps and limits the outer peripheral wall of the external infusion bottle nozzle. The lower fixing sleeve 2 has a through hole 21 for an external infusion tube to pass through along its height direction. The lower fixing sleeve 2 is provided with a second limiting structure for limiting the external infusion tube. The upper fixing sleeve 1 and the lower fixing sleeve 2 are connected by... A protective component is connected to prevent external stress from being applied at the connection between the infusion bottle and the infusion tube. The upper fixing sleeve 1 has a circumferential cavity. The first limiting structure includes a shaft retaining spring 121 filled in the cavity. The radial force of the shaft retaining spring 121 is directed toward the axis of the insertion hole 11. Two lever plates 13 are arranged opposite each other on the outer peripheral wall of the upper fixing sleeve 1 for external medical personnel to manipulate. The two lever plates 13 are respectively arranged on both sides of the notch 111 and are integrally connected to the upper fixing sleeve 1. The radial cross-section of the shaft retaining spring 121 is horseshoe-shaped, and both ends of the shaft retaining spring 121 extend toward the adjacent lever plate 13 with extension ends 122. The extension ends 122 are all embedded in the actuating plates 13. The two actuating plates 13 are fitted together to form an opening gap 131 for external medical personnel to insert their fingers and open the two actuating plates 13. The inner walls of the two actuating plates 13 are provided with friction protrusions 132. The second limiting structure includes a limiting sleeve 22 sleeved on the outer peripheral wall of the lower fixing sleeve 2. The inner peripheral wall of the limiting sleeve 22 is threadedly connected to the outer peripheral wall of the lower fixing sleeve 2. The through hole 21 communicates with the outer peripheral wall of the lower fixing sleeve 2 and forms a deformation groove 23. The deformation groove 23 communicates with the end faces of the two ends of the lower fixing sleeve 2. A plurality of spring pieces 24 are circumferentially arranged on the inner peripheral wall of the through hole 21. The plurality of spring pieces 24 are evenly distributed circumferentially. On the inner peripheral wall of the perforation 21, the spring piece 24 is composed of two ends and a raised portion 241. Both ends of the spring piece 24 are connected to the inner peripheral wall of the perforation 21. The raised portion 241 of the spring piece 24 is oriented towards the axis of the perforation 21. The protective component includes a protective sleeve 3 disposed between the upper fixed sleeve 1 and the lower fixed sleeve 2. The protective sleeve 3 has a through hole for an external infusion tube to pass through. The beginning of the protective sleeve 3 is connected to the end of the upper fixed sleeve 1, and the end of the protective sleeve 3 is connected to the beginning of the lower fixed sleeve 2. The diameter of the through hole gradually decreases from the beginning to the end of the protective sleeve 3. The protective sleeve 3 is an elastic corrugated tube made of foldable corrugated sheets connected along the folding and stretching direction.
[0019] This patent also includes an infusion bottle and an infusion tube, the infusion tube being identified as 51 in the accompanying drawings, and the infusion bottle being identified as 5 in the accompanying drawings.
[0020] The helical length of the threaded groove on the lower fixed sleeve in the attached diagram of the instruction manual is only for illustration. That is, the length of the helical groove used to cooperate with the limiting sleeve is not limited. Its opening length can be less than the length of the lower fixed sleeve, so that the limiting sleeve can be disengaged from the lower fixed sleeve when it slides a certain distance.
[0021] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.
Claims
1. A drip bottle anti-plug disposable infusion device, characterized by: The device includes an upper fixing sleeve and a lower fixing sleeve. The upper fixing sleeve has a through hole along its height for inserting into an external infusion bottle nozzle. The through hole connects to the outer peripheral wall of the upper fixing sleeve and forms a notch. The upper fixing sleeve is provided with a first limiting structure for applying force to the upper fixing sleeve so that the through hole adaptively clamps and limits the outer peripheral wall of the external infusion bottle nozzle. The lower fixing sleeve has a through hole along its height for an external infusion tube to pass through. The lower fixing sleeve is provided with a second limiting structure for limiting the external infusion tube. A protective component is connected between the upper and lower fixing sleeves to prevent external stress from being applied at the connection between the infusion bottle and the infusion tube.
2. The disposable infusion set according to claim 1, wherein: The upper fixed sleeve has a cavity circumferentially opened, and the first limiting structure includes a shaft retaining spring filled in the cavity. The radial force loading direction of the shaft retaining spring is set towards the axis of the insertion hole.
3. The anti-withdrawal disposable infusion set according to claim 2, characterized in that: Two actuating plates are arranged opposite each other on the outer peripheral wall of the upper fixing sleeve for external medical personnel to pry open. The two actuating plates are respectively arranged on both sides of the notch. The actuating plates are integrally connected to the upper fixing sleeve. The radial section of the shaft retaining spring is horseshoe-shaped and both ends of the shaft retaining spring extend towards the adjacent actuating plates. Each of the extension ends is embedded in the actuating plate. The two actuating plates are fitted with a gap to form a spreading gap for external medical personnel to insert their fingers and spread the two actuating plates. The inner walls of the two actuating plates are provided with friction protrusions.
4. The anti-withdrawal disposable infusion set according to claim 1, characterized in that: The second limiting structure includes a limiting sleeve fitted on the outer peripheral wall of the lower fixed sleeve. The inner peripheral wall of the limiting sleeve is threadedly connected to the outer peripheral wall of the lower fixed sleeve. The through hole communicates with the outer peripheral wall of the lower fixed sleeve and forms a deformation groove. The deformation groove communicates with the end faces of both ends of the lower fixed sleeve. A plurality of spring pieces are circumferentially arranged on the inner peripheral wall of the through hole. The plurality of spring pieces are evenly distributed circumferentially on the inner peripheral wall of the through hole. Each spring piece consists of two ends and a raised portion. Both ends of the spring piece are connected to the inner peripheral wall of the through hole. The raised portion of the spring piece is oriented towards the axis of the through hole.
5. The anti-withdrawal disposable infusion set of claim 1, wherein: The protective component includes a protective sleeve disposed between the upper fixed sleeve and the lower fixed sleeve. The protective sleeve has a through hole for an external infusion tube to pass through. The beginning of the protective sleeve is connected to the end of the upper fixed sleeve, and the end of the protective sleeve is connected to the beginning of the lower fixed sleeve. The diameter of the through hole gradually decreases from the beginning to the end of the protective sleeve.
6. The anti-withdrawal disposable infusion set according to claim 5, characterized in that: The protective sleeve is an elastic corrugated tube made by connecting foldable corrugated sheets along the folding and stretching direction.