Sterilization bag on roll
The roll-type sterilization bag with groove structures and internal indicators addresses issues of contamination and indication accuracy, ensuring reliable sterilization status display across multiple methods.
Patent Information
- Application Number
- JP2025003943U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2024-11-21
- Filing Date
- 2025-11-13
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-11-13
AI Technical Summary
Conventional sterilization roll bags face issues with inaccurate sterilization status indication, contamination risk from indicators, limited compatibility with multiple sterilization methods, and inadequate groove structures that compromise seal integrity and material combination effectiveness.
A roll-type sterilization bag design featuring a porous substrate with a transparent film, groove structures at the edge seals, and sterilization status indicators within these grooves, ensuring safe contact with the sterilization environment and accurate indication through color-changing ink compatible with multiple sterilization methods.
The design effectively prevents indicator contamination, provides reliable sterilization status indication, and ensures compatibility with various sterilization methods, enhancing the safety and efficiency of medical device packaging.
Smart Images
Figure 0003254382000001_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to a roll-type sterilization bag, and in particular to a roll-type sterilization bag with an improved groove structure and sterilization status indicator block. [Background technology]
[0002] Sterilization roll bags play an important role in the field of sterilization packaging of medical devices. Conventional sterilization roll bags are usually composed of one layer of porous material (e.g., paper material) and one layer of transparent plastic film. This type of basic structure allows the sterilant to penetrate and at the same time maintains the sterility of the contents after sterilization. However, this type of structure has some drawbacks in practical application, especially in the indication of the sterilization state and the reliability of the seal.
[0003] Sterilization status indication has always been a key issue in the design of roll-type sterilization bags. Early designs typically used external chemical indicators. While this method is simple, it does not accurately reflect the actual sterilization status of the items inside the bag. Some improved designs have attempted to place indicators inside the pack, but this method increases the risk of contamination due to direct contact between the indicator and the medical device. In addition, traditional indicators are usually only compatible with one sterilization method. In particular, current technology lacks indicator designs that can be simultaneously used with multiple sterilization methods, such as steam, hydrogen peroxide plasma, and ethylene oxide gas.
[0004] Designing the sealing structure poses another challenge for roll-type sterilization bags. While traditional heat-sealing technology is widely used to seal roll bags, it has limitations in providing other functions. For example, ensuring a tight seal while simultaneously providing a path for the sterilization indicator to come into contact with the internal environment is a challenging task. Therefore, attempts have been made to provide other structural functions by designing special groove structures, such as groove structures. However, these designs often require precise control during the manufacturing process to ensure structural consistency and reliability. Current technology does not yet offer an effective design that incorporates various groove structures at the edge seal and safely positions the sterilization indicator block within the innermost groove to prevent direct contact between the indicator and the contents.
[0005] The material for roll-type sterilization bags is selected based on a balance of various factors. Materials composed of high-density polyethylene (HDPE) fiber (e.g., Tyvek® paper) are widely used as porous substrates due to their excellent breathability and tear resistance. At the same time, materials such as polyethylene terephthalate (PET), polypropylene (PP), or polyethylene (PE) are often used as transparent films, providing good visibility and sealing properties. However, how to effectively combine the advantages of porous substrates (e.g., Tyvek® paper) and transparent films (e.g., PET, PP, or PE) to ensure breathability and aseptic isolation while also providing the necessary mechanical strength and high-temperature resistance remains an unresolved issue. Furthermore, current technology lacks a method for creating special groove structures at the joining points of these materials, while also ensuring overall performance and cost-effectiveness.
[0006] Finally, there is room for improvement in the placement of the sterilization status indicator blocks in current roll-type sterilization bags. Most designs fail to address the issue of insufficient contact between the indicator block and the sterilization environment, affecting the accuracy and reliability of the indication. To address this issue, the present invention provides an improved roll-type sterilization bag structure, characterized by a special groove structure formed at the edge seal between the porous substrate and transparent film, and a sterilization status indicator block positioned within the structure. This design not only ensures sufficient contact between the indicator block and the sterilization environment, but also allows the indicator block to accurately reflect the actual sterilization status inside the bag through a special opening design. In addition, the roll-type sterilization bag of the present invention uses a fixed-interval indicator block design, further improving the consistency and reliability of the sterilization status indication. This innovative structural design effectively solves the problems present in current technology and provides greater reliability and efficiency in sterilization packaging of medical devices. Summary of the Invention [Problem to be solved by the invention]
[0007] The main object of the present invention is to provide a roll-type sterilization bag structure that effectively prevents contamination of medical instruments with sterilization indicators and at the same time provides clear and reliable indication of the sterilization state. [Means for solving the problem]
[0008] To achieve the above-mentioned objectives, the present invention provides a roll-type sterilization bag, which includes a porous substrate having an inner surface and an outer surface, a transparent film covering the inner surface of the porous substrate, a plurality of sterilization status indicators attached to the inner surface of the porous substrate, and groove structures formed at the edge seals on both sides of the roll-type sterilization bag composed of the porous substrate and the transparent film, wherein the sterilization status indicators are attached to the groove structures, and upon completion of the sterilization process, the indicators change in color, for example.
[0009] In one embodiment of the present invention, the porous substrate is made of high-density polyethylene (HDPE) fiber. In another embodiment, the porous substrate is made of Tyvek paper, various medical-grade paper materials, or SMS nonwovens (Spunbond + Meltblown + Spunbond Nonwovens), etc.
[0010] In a specific embodiment of the present invention, the groove structure includes multiple grooves and multiple sealing areas, and the sterilization indicator block is located in the innermost groove, which further reduces the risk of the sterilization indicator block contaminating medical instruments.
[0011] Another feature of the present invention is that the innermost sealed area of the groove structure has a number of openings, which allow the sterilization indicator block to communicate with the interior space of the roll-type sterilization bag through the openings. This type of design allows the sterilization medium to come into contact with the sterilization indicator block, ensuring the accuracy of the sterilization indication.
[0012] In the best implementation of this invention, the sterilization status indicator blocks are spaced at fixed intervals according to the design needs of the roll-type sterilization bag, specifically, the fixed interval is 5-155mm, which ensures uniform distribution of the sterilization status indicator blocks and makes it easier for users to use and observe.
[0013] In one embodiment of the present invention, the sterilization status indicator block is a sterilization color-changing ink, which is printed directly on the inner surface of the porous substrate, and the sterilization color-changing ink is steam sterilization color-changing ink, hydrogen peroxide plasma sterilization color-changing ink, ethylene oxide gas sterilization color-changing ink, or a combination thereof, and is compatible with each sterilization method.
[0014] In this invention, the transparent film is made of polyethylene terephthalate (PET), polypropylene (PP) or polyethylene (PE) material, which provides good transparency and sealing ability. [Effects of the Invention]
[0015] The roll-type sterilization bag of this invention has a sterilization indicator block installed in a groove structure, which effectively prevents the risk of the sterilization indicator contaminating the medical instruments, while ensuring the reliability and visibility of the sterilization indicator, providing good assurance of the sterilization of the medical instruments. [Brief explanation of the drawings]
[0016] [Figure 1] 1 is an instruction diagram of an embodiment of the roll-type sterilization bag of the present invention. [Figure 2] 1 is an instruction diagram of another embodiment of the roll-type sterilization bag of the present invention. [Figure 3] FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1. [Figure 4] 10 is a diagram showing yet another embodiment of the roll-type sterilization bag of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0017] To further explain the roll-type sterilization bag provided by the present invention, the following diagrams are used to illustrate preferred embodiments of the present invention. (One embodiment)
[0018] As shown in FIG. 1 , the present invention provides a roll-type sterilization bag 100. It includes a porous substrate 101, a transparent film 102, a plurality of sterilization status indicator blocks 103, and a groove structure 104. The groove structure 104 is composed of a sealing area S and a groove G, which form the edge seals on both sides of the roll-type sterilization bag 100 between the porous substrate 101 and the transparent film 102. The sealing area S ensures the sealing function of the roll-type sterilization bag, and the groove G provides a safe space for the sterilization status indicator blocks 103. In this embodiment, the porous substrate 101 is made of high-density polyethylene (HDPE) fiber, such as Tyvek paper, various medical-grade paper materials, or SMS nonwoven fabric (Spunbond + Meltblown + Spunbond nonwoven fabric), which provides good breathability and tear resistance. This structural design not only enhances the overall strength of the roll-type sterilization bag 100, but also provides a basis for reliable sterilization status indication.
[0019] As shown in Figure 2, the porous substrate 101 has an inner surface 1011 and an outer surface 1012, and the transparent film 102 is coated on the inner surface 1011 of the porous substrate 101. The sterilization status indicator block 103 is disposed on the inner surface 1011 of the porous substrate 101 and within a groove structure 104. The groove structure 104 includes a plurality of grooves G, and the sterilization status indicator block 103 is located within the innermost groove G. This type of design further reduces the risk of the sterilization status indicator block 103 contaminating the medical devices 200. Figure 2 also clearly shows the internal space I of the roll-type sterilization bag 100, within which the medical devices 200 are placed. The roll-type sterilization bag 100 is heat-sealed, sealing the porous substrate 101 and transparent film 102 at both the front and rear ends of the medical device 200 together. This seals the medical device 200 inside the roll-type sterilization bag 100, and the appropriate sterilization process is carried out. Once the sterilization process is complete, the user can observe a change in the display state (e.g., color) of the sterilization status indicator block 103 through the transparent film 102, thereby confirming that the medical device 200 has been sterilized.
[0020] Figure 3 is a cross-sectional view taken along the line AA in Figure 1, clearly showing the details of the groove structure 104. The groove structure 104 includes multiple grooves G and a sealing area S. This cross-sectional view shows how the sterilization status indicator block 103 is positioned within the innermost groove G, and how the porous substrate 101 and transparent film 102 form this type of structure at the edge seal points on both sides. This design not only provides a safe space for the sterilization status indicator block 103 to be positioned, but also ensures the overall sealing function of the roll-type sterilization bag 100 through the sealing area S. Figure 3 also clearly shows the depth and shape of the grooves G and their relationship to the sealing area S, further illustrating the structural characteristics and functional design of the roll-type sterilization bag 100. This type of structure not only increases the strength of the roll-type sterilization bag 100, but also provides safety protection through the sterilization status indicator block 103.
[0021] Figure 4 shows another embodiment of the present invention, in which the innermost edge seal (sealing area S) of the groove structure 104 has multiple openings O, which is a key feature of this embodiment. These openings O allow the sterilization status indicator blocks 103 to communicate with the interior space I of the roll-type sterilization bag 100, ensuring that the conditions under which the sterilization medium contacts the sterilization status indicator blocks 103 are the same as those of the medical instruments 200 in the interior space I of the roll-type sterilization bag 100, thereby improving the accuracy of the sterilization status indication and preventing the sterilization status indicator blocks 103 from directly contaminating the medical instruments 200. Additionally, the sterilization status indicator blocks 103 are spaced at a fixed distance d, e.g., between 5 and 155 mm, depending on the design needs of the roll-type sterilization bag. This ensures uniform distribution of the sterilization status indicator blocks 103 and facilitates user observation. Figure 4 also shows the sealing area S, highlighting the overall sealing function of the roll-type sterilization bag 100. This type of design prevents the indicator in the sterilization status indicating block 103 from directly contaminating the medical device 200, and provides a clearer and more reliable indication of the sterilization status.
[0022] Furthermore, the sterilization status indicator block 103 in each of the above-described embodiments is a sterilization color-changing ink that is printed directly on the inner surface 1011 of the porous substrate 101. The sterilization color-changing ink may be steam sterilization color-changing ink, hydrogen peroxide plasma sterilization color-changing ink, or ethylene oxide gas sterilization color-changing ink, corresponding to different sterilization methods. When the sterilization process is completed, the indication state of the sterilization status indicator block 103 changes, for example, by changing color to indicate the sterilization status. Furthermore, the transparent film 102 may be made of polyethylene terephthalate (PET), polypropylene (PP), or polyethylene (PE), which provides good transparency and sealing properties.
[0023] The above description fully clarifies the roll-type sterilization bag of the present invention. In particular, the above detailed description is a practical concrete description of the present invention, but the embodiments do not limit the scope of the present invention, and all implementations or modifications of the same effect based on the spirit of the present invention shall be included in the scope of the present invention. [Explanation of symbols]
[0024] 100 rolls of sterilized bags 200 Medical Devices 101 Porous substrate 1011 Inner surface 1012 Outer surface 102 Transparent film 103 Sterilization status display block 104 Groove structure AA cross section d fixed distance G groove I Interior space O opening S Sealed Area
Claims
1. In roll-type sterilization bags, a porous substrate having an inner surface and an outer surface; A transparent film coated on the inner surface of the porous substrate; a plurality of sterilization status indicating blocks disposed on the inner surface of the porous substrate; A groove structure formed at an edge seal portion of the roll-type sterilization bag composed of the porous substrate and the transparent fill, The sterilization status indicating block is installed in the groove structure. Sterilized bag on roll.
2. 2. The roll-type sterilization bag according to claim 1, wherein the porous substrate is made of high-density polyethylene (HDPE) fiber.
3. 2. The roll-type sterilization bag according to claim 1, wherein the porous substrate is Tyvek (registered trademark), medical grade paper material, or SMS nonwoven fabric.
4. 2. The roll-type sterilization bag according to claim 1, wherein the groove structure comprises a plurality of grooves and a plurality of sealing areas, and the sterilization status indicating block is located in the innermost groove.
5. 5. The roll-type sterilization bag according to claim 4, wherein the innermost sealed area of the groove structure has a plurality of openings, whereby the sterilization status indicating block communicates with the interior space of the roll-type sterilization bag through the openings.
6. 2. The sterilization roll bag according to claim 1, wherein the sterilization status indicator blocks are adjustable at fixed intervals based on the design needs of the sterilization roll bag.
7. The sterilization bag roll according to claim 6, wherein the fixed distance is 5-155 mm.
8. 2. The roll-type sterilization bag according to claim 1, wherein the sterilization state indicating block is a sterilization color-changing ink, and the sterilization color-changing ink is printed directly on the inner surface of the porous substrate.
9. 9. The roll-type sterilization bag according to claim 8, wherein the sterilization color-changing ink is steam sterilization color-changing ink, hydrogen peroxide plasma sterilization color-changing ink, or ethylene oxide gas sterilization color-changing ink.
10. 2. The roll-type sterilization bag according to claim 1, wherein the transparent film is made of polyethylene terephthalate (PET), polypropylene (PP), or polyethylene (PE).