Disposable Luer taper blood bag

Abstract

The utility model relates to the technical field of medical equipment, in particular to a disposable Luer taper blood bag. The disposable Luer taper blood bag comprises a blood bag body, a catheter, a Luer taper, a cap and a protection bag, one end of the catheter is communicated with the blood bag body, the other end of the catheter is connected with the Luer taper, the cap is connected to the end of the Luer taper, and the protection bag is arranged outside the cap and the Luer taper in a sleeving mode and connected with the catheter. The Luer taper is isolated from the external environment through the cap and the protection bag in sequence, the probability of bacterial infection is reduced, a good protection effect on blood is formed in vitro, the risk of pollution to a patient is avoided, in addition, medical workers inject medicine into the blood bag through the Luer taper, the occupational risk that the medical workers are prone to puncture and exposure is reduced, and the safety of the patient is improved. And the Luer taper can be connected with a plurality of medical equipment such as a renal dialysis machine, an extracorporeal circulation pipeline and a blood recycling machine, so that the problem of instrument matching is solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a disposable Luer connector blood bag. Background Art

[0002] Indications for autologous blood transfusion in China include emergency treatment for traumatic hemorrhage, cardiac and major vascular surgery, orthopedic total hip replacement, and spinal surgery. During surgery, blood is drawn into a sterile bottle using negative pressure from an extracorporeal circulation machine. It is then anticoagulated with sodium citrate or heparin, filtered or centrifuged, and then returned to the patient via a transfusion device. These major surgeries typically last over six hours. Red blood cells lose their energy source after leaving the body, and prolonged exposure can cause rupture of their red blood cell membranes, resulting in reduced activity and oxygen transport capacity, posing significant transfusion risks.

[0003] At present, autologous blood transfusion requires medical staff to connect the sterile bottle to the extracorporeal circulation machine using a blood collection needle manually. After the blood is introduced into the bottle, a more radical blood collection needle is used to inject heparin anticoagulant into the syringe needle tip to prevent blood coagulation, which easily poses a risk of puncture exposure to medical staff.

[0004] Therefore, there is an urgent need for a disposable Luer connector blood bag that can solve problems such as instrument matching and medical staff safety. Utility Model Content

[0005] The purpose of this application is to provide a disposable Luer connector blood bag that can solve problems such as instrument matching and medical staff safety.

[0006] The embodiments of the present application can be implemented through the following technical solutions:

[0007] A disposable Luer connector blood bag comprises a blood bag, a catheter, a Luer connector, a cap and a protective bag. One end of the catheter is connected to the blood bag, and the other end is connected to the Luer connector. The cap is connected to the end of the Luer connector. The protective bag is sleeved over the cap and the outside of the Luer connector and is connected to the catheter.

[0008] Furthermore, the Luer connector is connected to the catheter by gluing.

[0009] Furthermore, the protection bag is connected to the outer periphery of the catheter by heat welding.

[0010] Furthermore, it also includes a breakable plug, one end of which is connected to the catheter, and the other end of which is connected to the blood bag, so as to control the communication between the blood bag and the catheter.

[0011] Furthermore, it also includes a switch clip, which is sleeved on the outer periphery of the catheter and located between the easy-to-break plug and the Luer connector.

[0012] Furthermore, the Luer connector includes a Luer inner tapered locking connector and a Luer outer tapered locking connector, one end of the Luer outer tapered locking connector extends into the catheter and is connected to the catheter, and the other end is spirally connected to the Luer inner tapered locking connector.

[0013] Furthermore, the Luer female tapered lock connector includes a tapered cavity and internal and external thread structures. The tapered cavity can accommodate part of the Luer male tapered lock connector and is spirally connected to the Luer male tapered lock connector through the internal and external thread structures.

[0014] Furthermore, the Luer outer cone locking connector includes a ridge structure, which is protruded toward the outer circumference and is interference-fitted with the inner wall of the catheter.

[0015] The disposable Luer connector blood bag provided in the embodiments of the present application has at least the following beneficial effects:

[0016] The Luer connector in this application is isolated from the external environment by a cap and a protective bag, reducing the chance of bacterial infection, providing good protection for blood outside the body, and avoiding the risk of contamination to patients. In addition, medical staff can inject drugs into the blood bag through the Luer connector, reducing the occupational risk of puncture exposure for medical staff. The Luer connector can be connected to several medical devices such as kidney dialysis machines, extracorporeal circulation circuits, and blood recovery machines, solving the problem of instrument matching.

[0017] The Luer connector in this application is connected to the catheter by gluing to achieve a stable sealed connection between the Luer connector and the catheter, ensuring the sterilization effect and internal stability during moist heat sterilization;

[0018] The protective bag in this application is connected to the outer periphery of the catheter by heat welding. On the one hand, it can withstand the high temperature environment during moist heat sterilization and ensure the stability of sterilization. On the other hand, during use, the protective bag can be torn open easily and quickly, ensuring the efficiency of medical staff's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the overall structural diagram of the disposable Luer connector blood bag in this application;

[0020] Figure 2 A cross-sectional view of the Luer connector in this application;

[0021] Figure 3 This is a cross-sectional view of the Luer connector in this application after explosion.

[0022] Reference numerals: 1. Luer connector, 2. switch clip, 3. easy-break plug, 4. blood bag, 5. protective bag, 6. Luer inner cone lock connector, 7. Luer outer cone lock connector. DETAILED DESCRIPTION

[0023] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

[0024] The terms used in this specification are intended to illustrate the embodiments of this application and are not intended to limit this application. Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will have a clear understanding of the specific meanings of the above terms in this application.

[0025] In addition, in the description of the embodiments of the present application, various components on the drawings are enlarged or reduced in size for ease of understanding, but this practice is not intended to limit the scope of protection of the present application.

[0026] This application provides a disposable Luer connector blood bag. Figure 1 The overall structure of the disposable Luer connector blood bag in this application is shown in FIG. Figure 1 As shown, the disposable Luer connector blood bag comprises a blood bag 4, a catheter, a Luer connector 1, a cap, and a protective bag 5. One end of the catheter is connected to the blood bag 4, and the other end is connected to the Luer connector 1. The cap is connected to the end of the Luer connector 1. The protective bag 5 is mounted on the outside of the cap and Luer connector 1 and is connected to the catheter. The cap can be connected to the Luer connector 1, creating a closed environment between the Luer connector 1 and the blood bag 4. This reduces contact between the Luer connector 1 and the external environment, reducing the chance of bacterial infection. The protective bag 5 further isolates the Luer connector 1 from the external environment, further reducing the chance of bacterial infection, providing excellent protection for the blood outside the body and avoiding the risk of contamination to the patient. Medical personnel inject medication into the blood bag 4 through the Luer connector 1, reducing the occupational risk of puncture and exposure. The Luer connector 1 can also be connected to a number of medical devices, such as kidney dialysis machines, extracorporeal circulation circuits, and blood salvage machines, solving the problem of device compatibility.

[0027] In some preferred embodiments of the present application, in order to prolong the storage time of the blood in the blood bag 4, a blood preservation solution is retained in the blood bag 4, which provides conditions for temporarily storing the blood and improves the survival rate of blood cells.

[0028] Furthermore, because blood preservation fluid is liquid, disposable Luer connector blood bags can only be sterilized via moist heat sterilization, not ethylene oxide sterilization. Moist heat sterilization requires sterilizing the entire device, which increases the chance of bacterial infection and creates significant stress on the Luer connector 1. Therefore, in some specific embodiments of the present application, the Luer connector 1 is glued to the catheter to achieve a stable, sealed connection, ensuring sterilization effectiveness and internal stability during moist heat sterilization.

[0029] In some specific embodiments of the present application, the protective bag 5 is attached to the outer periphery of the catheter by heat welding. This prevents bacteria from entering and ensures stable sterilization. It also allows for easy and quick removal of the protective bag during use, ensuring efficient operation by medical personnel.

[0030] In some preferred embodiments of the present application, the disposable Luer connector blood bag further includes a breakable plug 3, one end of which is connected to the catheter and the other end is connected to the blood bag 4, which can control the connection between the blood bag 4 and the catheter to achieve blood recovery and storage.

[0031] Furthermore, the disposable Luer connector blood bag also includes a switch clip 2, which is sleeved on the outer periphery of the catheter and located between the frangible plug 3 and the Luer connector 1, and can further control the connection between the Luer connector 1 and the blood bag 4 to ensure the recovery and storage of blood.

[0032] Furthermore, Figure 2 and Figure 3 The cross-sectional view and the exploded cross-sectional view of the Luer connector 1 are shown respectively. Figure 2 and Figure 3 As shown, the Luer connector 1 includes a Luer inner tapered locking connector 6 and a Luer outer tapered locking connector 7. One end of the Luer outer tapered locking connector 7 extends into the catheter and is connected to the catheter, and the other end is spirally connected to the Luer inner tapered locking connector 6.

[0033] Specifically, the Luer female tapered locking connector 6 includes a tapered cavity and internal and external thread structures, so that the Luer connector 1 can be tightly connected and limit displacement, and its sealing performance is more reliable.

[0034] Furthermore, the conical cavity can accommodate a portion of the Luer outer cone lock connector 7 and be screwed together with the Luer outer cone lock connector 7 via internal and external thread structures.

[0035] Specifically, the Luer outer cone locking connector 7 includes a ridge structure, which is protruding toward the outer periphery and has an interference fit with the inner wall of the catheter, thereby effectively preventing slipping and making it easier to open.

[0036] In summary, the disposable Luer connector blood bag of this application is used as follows: first, tear open the protective bag 5, unscrew the Luer female locking connector 6, connect the Luer male locking connector 7 to the adapter, and open the frangible stopper 3 to recover and store blood. After blood collection is complete, close the switch clip 2 and tighten the Luer female locking connector 6.

[0037] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications can be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A disposable Luer connector blood bag, characterized by: The device comprises a blood bag, a catheter, a Luer connector, a cap and a protective bag. One end of the catheter is connected to the blood bag, and the other end is connected to the Luer connector. The cap is connected to the end of the Luer connector. The protective bag is sleeved on the outside of the cap and the Luer connector and connected to the catheter.

2. The disposable Luer connector blood bag according to claim 1, characterized in that: The Luer connector is connected to the catheter by gluing.

3. The disposable Luer connector blood bag according to claim 1, characterized in that: The protection bag is connected to the outer periphery of the catheter by heat welding.

4. The disposable Luer connector blood bag according to claim 1, characterized in that: It also includes a breakable plug, one end of which is connected to the catheter, and the other end of which is connected to the blood bag, so as to control the communication between the blood bag and the catheter.

5. The disposable Luer connector blood bag according to claim 4, characterized in that: It also includes a switch clip, which is sleeved on the outer periphery of the catheter and located between the frangible plug and the Luer connector.

6. The disposable Luer connector blood bag according to claim 4, characterized in that: The Luer connector includes a Luer inner tapered locking connector and a Luer outer tapered locking connector. One end of the Luer outer tapered locking connector extends into the catheter and is connected to the catheter, and the other end is spirally connected to the Luer inner tapered locking connector.

7. The disposable Luer connector blood bag according to claim 6, characterized in that: The Luer female tapered lock connector includes a tapered cavity and an internal and external thread structure. The tapered cavity can accommodate a portion of the Luer male tapered lock connector and is spirally connected to the Luer male tapered lock connector through the internal and external thread structure.

8. The disposable Luer connector blood bag according to claim 6, characterized in that: The Luer outer cone lock connector includes a ridge structure that protrudes toward the outer circumference and is interference-fitted with the inner wall of the catheter.

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