Sterilization respiratory bag

Abstract

The utility model provides a kind of sterilization respiratory bag, belong to aseptic pharmaceutical technical field, including first piece and second piece, the bottom end and both sides of first piece and second piece are respectively heat-seal connection to form the bag body with the opening of upper end;First piece includes third piece and fourth piece sequentially heat-seal connection from top to bottom, and the middle heat-seal line is formed between third piece and fourth piece, second piece and third piece are transparent sheet layer, and fourth piece is breathable antibacterial sheet layer;The upper portion of bag body is provided with easy tear opening, and easy tear opening is located between opening and middle heat-seal line.The utility model provides a kind of sterilization respiratory bag, and easy tear opening is arranged between middle heat-seal line and opening, so that tear open operation is located in transparent sheet layer, avoid the risk that fiber debris or plastic microparticle is produced by breathable antibacterial sheet layer tearing, effectively avoid that microorganism pollution aseptic environment is carried by microparticle, and provide safeguard for the operation safety of medical, pharmaceutical and other high cleanliness scene.

Description

Technical Field

[0001] This utility model belongs to the field of aseptic pharmaceutical technology, and more specifically, it relates to a sterile breathing bag. Background Technology

[0002] In fields with extremely high requirements for aseptic operation, such as modern medicine, pharmaceuticals, food processing, and precision instrument manufacturing, sterilization breathing bags play an indispensable role as a key packaging carrier for pharmaceutical equipment, medical devices, and consumables. Their single-layer or multi-layer composite structure typically includes a transparent layer of polymer material and a breathable, antimicrobial layer of non-woven fabric. This design allows them to withstand high-pressure steam sterilization at 121°C for 30 minutes, effectively expelling air during sterilization while allowing water vapor to pass through. Simultaneously, it forms a reliable microbial barrier after sterilization, ensuring the sterility of the contents.

[0003] However, existing sterile breathing bags have revealed many drawbacks in practical use. In high-cleanliness operation scenarios such as clinical surgery and drug production, medical staff and operators need to quickly obtain sterilized items and tear open the breathing bag using the easy-tear opening. However, during the manual tearing process, fiber fragments or plastic particles are easily generated on the surface of the breathable and antibacterial sheet. Once these particles enter the sterile operating environment, they may become carriers for microbial adhesion, leading to serious consequences such as postoperative infection and drug contamination. Utility Model Content

[0004] The purpose of this invention is to provide a sterilization breathing bag that solves the problem that fiber fragments or plastic particles are easily shed from the surface of the breathable and antibacterial sheet during the process of manually tearing open the easy-tear opening.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a sterilization breathing bag, including a first piece and a second piece, wherein the bottom ends and both sides of the first piece and the second piece are heat-sealed together to form a bag with an opening at the top;

[0006] The first sheet includes a third sheet and a fourth sheet that are heat-sealed together from top to bottom, with a central heat-sealing line between the third sheet and the fourth sheet. The second sheet and the third sheet are both transparent sheets, and the fourth sheet is an air-permeable and antibacterial sheet.

[0007] The upper part of the bag is provided with an easy-tear opening, which is located between the opening and the central heat-sealed line.

[0008] In one possible implementation, both the second sheet and the third sheet are made of HDPE material.

[0009] In one possible implementation, the fourth sheet is made of Tyvek or Hypak material.

[0010] In one possible implementation, the two sides of the first sheet and the second sheet are heat-sealed together to form first heat-sealed lines on both sides of the bag body, and the two tear-off openings are opened opposite each other on the outside of the two first heat-sealed lines.

[0011] In one possible implementation, the width of the tear opening decreases from the outside in.

[0012] In one possible implementation, the bottoms of the first sheet and the second sheet are heat-sealed together to form a second heat-sealed line at the bottom of the bag body, and a third heat-sealed line is provided at the lower part of the bag body, the third heat-sealed line being located above the second heat-sealed line.

[0013] In one possible implementation, the second heat-sealed wire and the third heat-sealed wire are parallel.

[0014] In one possible implementation, the distance between the second heat-sealed wire and the third heat-sealed wire is 20-25 cm.

[0015] The beneficial effects of the sterilization breathing bag provided by this utility model are as follows: Compared with the prior art, the bottom and sides of the first and second pieces are heat-sealed together to form a bag with an open top. The first piece is composed of a third and fourth piece heat-sealed together from top to bottom, forming a central heat-sealed line. The second and third pieces are transparent layers, while the fourth piece is a breathable and antibacterial layer. The structure of the first piece using the heat-sealed connection of the third and fourth pieces retains the sterilization breathing bag's ability to withstand high-pressure steam sterilization, effectively expel air, and allow water vapor penetration, ensuring a reliable microbial barrier after sterilization and guaranteeing the sterility of the internal items. The easy-tear opening is located between the central heat-sealed line and the opening between the third and fourth pieces, allowing the tearing operation to occur within the transparent layer. This avoids the risk of fiber fragments or plastic particles being generated from tearing the breathable and antibacterial layer, effectively preventing microbial contamination of the sterile environment by particles, and providing operational safety guarantees for high-cleanliness scenarios such as medical and pharmaceutical industries. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1A schematic diagram of the structure of the sterilization breathing bag provided by this utility model facing the first piece;

[0018] Figure 2 A schematic diagram of the structure of the sterilization breathing bag provided by this utility model facing the second piece;

[0019] Figure 3 for Figure 1 A magnified view of a section at point M.

[0020] In the diagram: 1. Second piece; 2. Third piece; 3. Fourth piece; 4. Middle heat seal line; 5. Tear-off opening; 6. Opening; 7. First heat seal line; 8. Second heat seal line; 9. Third heat seal line. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0023] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0024] Please see Figures 1 to 3 The present invention provides a sterilization breathing bag. A sterilization breathing bag includes a first sheet and a second sheet 1. The bottom ends and sides of the first sheet and the second sheet 1 are heat-sealed together to form a bag with an opening 6 at the top. The first sheet includes a third sheet 2 and a fourth sheet 3 heat-sealed together sequentially from top to bottom, with a central heat-sealing line 4 between the third sheet 2 and the fourth sheet 3. The second sheet 1 and the third sheet 2 are both transparent sheets, and the fourth sheet 3 is a breathable and antibacterial sheet. An easy-tear opening 5 is provided at the top of the bag, located between the opening 6 and the central heat-sealing line 4.

[0025] This utility model provides a sterilization breathing bag. Compared with the prior art, the bottom and sides of the first and second pieces 1 are heat-sealed together to form a bag with an opening 6 at the top. The first piece is composed of a third piece 2 and a fourth piece 3 heat-sealed together from top to bottom, forming a central heat-sealing line 4. The second piece 1 and the third piece 2 are transparent sheets, while the fourth piece 3 is a breathable and antibacterial sheet. The structure of the first piece using the heat-sealed connection of the third piece 2 and the fourth piece 3 retains the sterilization breathing bag's ability to withstand high-pressure steam sterilization, effectively expel air, and allow water vapor penetration, ensuring a reliable microbial barrier after sterilization and guaranteeing the sterility of the internal items. An easy-tear opening 5 is placed between the central heat-sealing line 4 and the opening 6 between the third piece 2 and the fourth piece 3, so that the tearing operation occurs on the transparent sheet, avoiding the risk of fiber fragments or plastic particles being generated from tearing the breathable and antibacterial sheet. This effectively prevents microorganisms from being carried by particles and contaminating the sterile environment, providing operational safety for high-cleanliness scenarios such as medical and pharmaceutical industries.

[0026] Please see Figure 1 Both the second sheet 1 and the third sheet 2 are made of HDPE. HDPE has excellent chemical stability and corrosion resistance, maintaining its structural integrity under high-pressure steam sterilization at 121°C for 30 minutes without deformation, dissolution, or chemical reaction, ensuring a smooth sterilization process and effectively preventing the material itself from decomposing and generating harmful substances that contaminate the items being sterilized. Its good mechanical strength and toughness make the sterilization breathing bag resistant to damage or tearing during transportation and storage, even under pressure or impact, reliably protecting the internal medical devices and consumables. Furthermore, the transparency of HDPE allows medical personnel and operators to clearly observe the state, quantity, and specifications of the items inside the bag before use, enabling quick confirmation without opening the packaging and improving retrieval efficiency. In addition, the smooth and flat surface of HDPE makes it less likely to produce plastic fragments when tearing the easy-tear opening 5 compared to other materials, further reducing the risk of particulate contamination of the aseptic operating environment. Combined with the breathable and antibacterial layer, it comprehensively ensures safe use in high-cleanliness scenarios such as medical and pharmaceutical applications.

[0027] Please see Figure 2The second and third panels (1 and 2) are made of HDPE, while the fourth panel (3) is made of either Tyvek or Hypak. This combination significantly enhances the performance of the sterilization breathing bag. HDPE, with its excellent chemical stability and corrosion resistance, maintains its structural integrity under high-pressure steam sterilization at 121°C for 30 minutes, ensuring a smooth sterilization process and preventing its own decomposition from contaminating the contents. Its good mechanical strength and toughness provide reliable physical protection for the breathing bag, while its transparency allows users to quickly observe the contents. The Tyvek material features a unique microfiber structure with excellent breathability, efficiently expelling air during sterilization while allowing water vapor to pass through. It also forms a strong microbial barrier, effectively preventing bacteria, dust, and other particles from entering. Furthermore, it does not easily generate fiber debris when the easy-tear opening (5) is torn, further reducing the risk of contamination. Hypak is a high-performance nonwoven material made using a unique polypropylene spunbond process, combining high strength with low weight. It possesses excellent microbial barrier capabilities, effectively resisting the intrusion of bacteria, viruses, and particulate matter such as dust, providing a reliable safety barrier for sterilized items in demanding environments such as medical and pharmaceutical settings. Simultaneously, Hypak's specially designed breathability allows for rapid air expulsion and efficient water vapor penetration during high-pressure steam sterilization, ensuring thorough and uniform sterilization and enhancing sterilization effectiveness. When used in conjunction with HDPE, Hypak not only forms a robust physical protective structure with HDPE, but its stable chemical properties also remain unchanged under high-temperature sterilization conditions, preventing the generation of harmful substances that contaminate the internal items. The two materials work synergistically, each fulfilling its specific function: HDPE ensures structural strength and visibility, while Tyvek or Hypak focuses on breathability and microbial barrier properties, comprehensively protecting the safety of sterilized items in high-cleanliness environments such as medical and pharmaceutical settings, significantly improving the reliability and safety of sterilization breathing bags.

[0028] Please see Figure 1 and Figure 2The first and second pieces 1 are heat-sealed together on both sides to form first heat-sealed lines 7 on both sides of the bag body. Two easy-tear openings 5 ​​are opened opposite each other on the outside of the two first heat-sealed lines 7. The first heat-sealed lines 7 formed by heat sealing on both sides significantly enhance the structural strength of the bag body, so that it can maintain its integrity even when subjected to external forces such as compression and collision during transportation and storage, effectively preventing the internal sterilized items from being contaminated due to damage to the bag body; at the same time, the presence of the heat-sealed lines also provides a stable support structure for the bag body, which helps to maintain the shape of the bag body and facilitates stacking, storage and retrieval. The easy-tear opening 5 is located on the outside of the first heat-sealed line 7. When tearing open the breathing bag, it can minimize the direct tearing of the breathable and antibacterial sheet, reduce the risk of fiber debris or plastic particles, and prevent these particles from entering the sterile operating environment, thereby effectively preventing postoperative infection, drug contamination and other problems. In addition, the two oppositely opened easy-tear openings 5 ​​give users flexible opening options. Whether operating with the left hand or the right hand, it is easy to find the appropriate tearing position. Especially in clinical surgery and drug production scenarios, it can quickly and conveniently obtain sterilized items, significantly improving work efficiency.

[0029] Please see Figure 3 The width of the easy-tear opening 5 decreases from the outside to the inside, making it easy for users to apply force with their fingers when opening the breathing bag, reducing the difficulty of opening and improving operational efficiency. As the bag is torn inward, the narrow opening allows for precise control of the tearing path, preventing deviation in the tearing direction and reducing the risk of fiber debris or plastic particles being generated due to damage to the breathable and antibacterial layers caused by excessive tearing, thus better maintaining a sterile operating environment. At the same time, this design with decreasing width creates a gradually tightening tearing effect during the tearing process, effectively preventing sterilized items inside the bag from accidentally falling out due to the large opening 6 at the moment of tearing, ensuring safety during the retrieval process. In addition, the finishing design of the narrow opening makes the edge of the bag after tearing neater, reducing the possibility of residual burrs causing secondary contamination of the sterile environment, further improving the reliability of the breathing bag in high-cleanliness scenarios such as medical and pharmaceutical applications.

[0030] Please see Figure 1 The bottom of the first and second pieces 1 are heat-sealed together to form a second heat-sealing line 8 at the bottom of the bag. A third heat-sealing line 9 is provided at the bottom of the bag, located above the second heat-sealing line 8. The third heat-sealing line 9, situated above the second heat-sealing line 8, further enhances the sealing of the lower part of the bag. Together with the first heat-sealing lines 7 on both sides, it forms a more robust protective structure, reducing the risk of external contaminants such as microorganisms and dust entering from the bottom and lower seams. Furthermore, the two heat-sealing lines facilitate users in securing and gripping the bag when opening the packaging to transfer materials, further improving operational convenience and aseptic properties.

[0031] Preferably, the second heat-sealing line 8 and the third heat-sealing line 9 are parallel, significantly improving the performance of the sterilization breathing bag. The regular parallel structure ensures even stress distribution at the bottom and lower part of the bag, effectively avoiding localized stress concentration caused by misaligned heat-sealing lines. This enhances the overall tensile and compressive strength, better preventing bottom deformation and damage when loading heavy objects or stacking, thus protecting the sterilized items inside. Furthermore, the tightly connected parallel heat-sealing lines reduce gaps for microbial invasion. Working synergistically with the breathable and antibacterial sheet, they create a more robust aseptic protection system, effectively blocking bacteria, dust, and other contaminants even during long-term storage or complex transportation environments, maintaining the sterility of the sterilized items.

[0032] Specifically, the distance between the second heat-sealed line 8 and the third heat-sealed line 9 is 20-25cm.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sterilization breathing bag, characterized in that, It includes a first piece and a second piece (1), the bottom ends and sides of the first piece and the second piece (1) are heat-sealed together to form a bag with an opening (6) at the top; The first sheet includes a third sheet (2) and a fourth sheet (3) that are heat-sealed together from top to bottom. A central heat-sealing line (4) is formed between the third sheet (2) and the fourth sheet (3). The second sheet (1) and the third sheet (2) are both transparent sheets, and the fourth sheet (3) is an air-permeable and antibacterial sheet. The upper part of the bag body is provided with an easy-tear opening (5), which is located between the opening (6) and the central heat-sealing line (4).

2. The sterilization breathing bag as described in claim 1, characterized in that, Both the second sheet (1) and the third sheet (2) are made of HDPE material.

3. The sterilization breathing bag as described in claim 1, characterized in that, The fourth piece (3) is made of Tyvek or Hypak material.

4. A sterilization breathing bag as described in claim 1, characterized in that, The first piece and the second piece (1) are heat-sealed together on both sides to form a first heat-sealed line (7) on both sides of the bag body, and the two easy-tear openings (5) are opened opposite each other on the outside of the two first heat-sealed lines (7).

5. A sterilization breathing bag as described in claim 4, characterized in that, The width of the tear-off opening (5) decreases from the outside to the inside.

6. A sterilization breathing bag as described in claim 1, characterized in that, The bottom of the first sheet and the second sheet (1) are heat-sealed together to form a second heat-sealed line (8) at the bottom of the bag body. A third heat-sealed line (9) is provided at the bottom of the bag body, and the third heat-sealed line (9) is located above the second heat-sealed line (8).

7. A sterilization breathing bag as described in claim 6, characterized in that, The second heat-sealed line (8) and the third heat-sealed line (9) are parallel.

8. A sterilization breathing bag as described in claim 7, characterized in that, The distance between the second heat-sealed wire (8) and the third heat-sealed wire (9) is 20-25cm.

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