A physically isolated, layered sterilization chamber for aseptic operation

Abstract

This utility model discloses a physically isolated layered sterilization chamber for aseptic operation, belonging to the technical field of aseptic operation and sterilization equipment. It solves the problems of difficulty in counting large quantities of small items before sterilization, easy wetting during sterilization or incomplete sterilization, and disordered storage and distribution after sterilization in existing technologies. The structure includes an outer cover of the chamber and a layered loading assembly. The outer cover of the chamber is a rigid, transparent, high-temperature resistant cylindrical structure, connected to the loading box base via an adjustable screw-on sealing structure (loosened during sterilization to allow steam flow, tightened during storage to prevent contamination). The layered loading assembly includes a fixed connecting rod and at least two loading boxes. The loading boxes are fitted onto the fixed connecting rod by connecting rings and separated by limiting protrusions, forming independent layered spaces. The loading boxes are hollow or have ventilated structures to ensure uniform steam penetration. This utility model has a simple structure, small size, and is reusable. It can achieve physical isolation of small items, improve sterilization efficiency and storage standardization, and is highly practical.

Description

Technical Field

[0001] This utility model relates to the field of aseptic operation and sterilization equipment technology, and is a physically isolated layered sterilization chamber for aseptic operation. Background Technology

[0002] When loading items to be sterilized or storing and distributing sterilized items in aseptic laboratories or sterilization centers, a large number of small items (such as test tubes, surgical suture needles, and pipette tips) are often piled together in a messy manner, making it difficult to count the quantity before sterilization; during sterilization, wet packs and non-sterilization are easily caused; and after sterilization, it is inconvenient to store and use them in the order of sterilization date. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the defects of existing sterilization devices, such as lack of layered isolation structure and insufficient sealing reliability, and to provide a physical isolation layered sterilization chamber for aseptic operation. It has a simple structure, is easy to use, saves materials and is small in size, is easy to store and can be reused multiple times.

[0004] The solution to the technical problem of this utility model is: a physical isolation layered sterilization chamber for aseptic operation, characterized in that: it includes an outer cover of the chamber and a layered loading assembly. The outer cover of the chamber is a cylindrical structure with one end open and the other end closed, and is made of a hard, transparent and high-temperature resistant material (such as borosilicate glass or polycarbonate). The layered loading assembly includes a loading box base, a fixed connecting rod and at least two loading boxes. The outer cover of the chamber and the loading box base are detachably and sealed by a screw-sealed structure, which not only prevents the components from falling off during sterilization, but also ensures the airtightness of the chamber.

[0005] One end of the fixed connecting rod is fixed to the base of the container by integral material molding or structural perforation, and the other end extends upward along the axis. The container is a disc-shaped structure with an open top and an annular connecting ring on its edge. The container is movably fitted onto the fixed connecting rod through the connecting ring. The limiting protrusion on the fixed connecting rod can restrict the axial displacement of the container, ensuring that each layer of container maintains a preset spacing, avoiding stacking due to vibration during sterilization, and ensuring unobstructed steam flow. Furthermore, the containers are spaced apart along the axial direction of the fixed connecting rod, forming multiple independent layered placement spaces.

[0006] The specific screw-sealing structure is as follows: the outer circumference of the opening end (cylindrical opening) of the outer cover of the chamber is integrally formed with a continuous external thread, the thread profile is triangular, and the effective length is 5-10mm; the edge of the base of the container is provided with an internal thread groove that matches the external thread, and the pitch and direction of the internal thread are consistent with the external thread. During sealing assembly, the cylindrical opening of the outer cover of the chamber is aligned with the internal thread groove of the base of the container and rotated, the internal thread and the external thread are gradually screwed together, and after tightening, the seal is achieved through the tight fit of the thread surfaces; the tightness of this structure can be adjusted according to the usage scenario: loosen during sterilization to allow the chamber to communicate with the outside world and facilitate steam penetration; tighten during storage or distribution, and the seal is achieved through the thread fit and deformation of the sealing gasket to prevent external contamination.

[0007] Furthermore, the container is a hollow mesh structure or a plate with vents, and its inner diameter is smaller than that of the outer cover of the chamber, ensuring that there is a gap between the container and the inner wall of the outer cover of the chamber for steam circulation; the fixed connecting rod is provided with several limiting protrusions along the axial direction to limit the axial displacement of the container and prevent the container from stacking due to vibration during the sterilization process.

[0008] The working process of this utility model is as follows: When in use, unscrew the outer cover of the chamber, adjust the spacing of the container on the fixed connecting rod according to the size of the items to be sterilized, and classify and place small items in different layers of container (achieving physical isolation); close the outer cover of the chamber, without tightening the screw sealing structure, so that the chamber forms an open space; place the entire device into the sterilization equipment, and high-temperature steam can evenly penetrate to each layer of items through the hollow structure of the container and the gaps between the layers to ensure thorough sterilization; after sterilization, tighten the outer cover of the chamber. After tightening, the sealing gasket is completely fitted, and the chamber forms a closed sterile space, which can be directly stored by layer; when dispensing, loosen the outer cover, observe the position of the items through the transparent outer cover, and take them from bottom to top, which meets the requirement of 'managing according to the sterilization date order' and avoids secondary disorder.

[0009] The beneficial effects of this utility model are as follows: It achieves physical isolation of small items through a layered loading assembly, solving the problems of difficulty in counting before sterilization and wet packs or incomplete sterilization caused by stacking during sterilization. It also facilitates layered storage and distribution after sterilization, improving operational efficiency. The outer cover of the chamber and the base of the loading box adopt a screw-sealed structure, ensuring reliable sealing and easy installation and removal, meeting the sealing requirements of high-pressure sterilization environments. The overall structure is simple, mainly composed of the outer cover of the chamber, a fixed connecting rod, and the loading box, saving materials, being compact, and easy to store. It uses high-temperature resistant transparent materials (borosilicate glass or polycarbonate), meeting the needs of repeated high-pressure sterilization while allowing for direct observation of the items inside the chamber, making it highly practical. Attached Figure Description

[0010] Figure 1 This is a front view schematic diagram of the overall structure of a physically isolated layered sterilization chamber for aseptic operation according to this utility model;

[0011] Figure 2 for Figure 1 A schematic diagram of the explosion (with the outer casing of the cavity separated from the layered cargo assembly).

[0012] Figure 3 This is a schematic diagram showing the connection between the storage box and the fixed connecting rod.

[0013] Figure 4 This is a partially enlarged schematic diagram of the screw-in sealing structure;

[0014] Figure 5 This is a front view schematic diagram of Example 1;

[0015] Figure 6 This is a front view schematic diagram of Example 2.

[0016] In the diagram: 1-outer cover of the cavity, 2-base of the storage box, 3-fixed connecting rod, 4-storage box, 5-connecting ring, 6-external thread, 7-internal thread groove, 8-sealing gasket, 9-limiting protrusion. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Example 1: Small-scale layered sterilization chamber for laboratory use

[0019] 1. Structural parameters

[0020] The outer cover of the chamber is a cylindrical structure made of borosilicate glass, with a height of 15cm, an inner diameter of 8cm, and a wall thickness of 3mm. The outer circumference of the open end (cylindrical mouth) is provided with external threads, the thread profile is triangular, the pitch is 2mm, and the effective thread length is 8mm. The closed end of the outer cover has a rounded bottom to facilitate steam reflux.

[0021] The base of the storage box is made of polycarbonate injection molding, with a diameter of 9cm and a thickness of 1.5cm. The edge is provided with an internal thread groove that matches the external thread of the outer cover. A silicone sealing gasket with a circular cross section (diameter of 8.5cm and wire diameter of 1mm) is embedded at the bottom of the groove. The connecting rod is fixedly connected to the center of the base by an integral molding method.

[0022] Fixed connecting rod: made of polycarbonate, 1cm in diameter and 12cm in length; a ring-shaped limiting protrusion (2mm in height) is provided every 3cm along the axial direction to separate the storage box.

[0023] Storage boxes: 3 in total, all made of polycarbonate perforated mesh (mesh diameter 5mm), 7.5cm in diameter and 2cm in height; the edges are provided with annular connecting rings with an inner diameter of 1.1cm. The inner side of the connecting rings is smooth and can slide freely along the fixed connecting rods and be blocked by limiting protrusions.

[0024] 2. Assembly method

[0025] (1) Insert the three containers into the fixed connecting rod one by one through the connecting ring, and use the limiting protrusion to separate them to form three independent spaces (layer spacing 3cm).

[0026] (2) Align the open end of the outer cover of the chamber with the internal thread groove of the base of the container, and rotate clockwise 8-10 times until the end face of the outer cover fits against the base to form a seal. After tightening, a sealed state is formed (suitable for storage); during sterilization, the outer cover needs to be loosened to keep the chamber open (the screw thread is not completely fitted) so that steam can enter.

[0027] 3. Usage Procedure (Taking laboratory test tube sterilization as an example)

[0028] Preparation before sterilization: Unscrew the outer cover of the chamber and place 10 1.5mL centrifuge tubes (upper layer), 5 petri dish caps (middle layer), and 8 pipette tips (lower layer) into the three-layer container to achieve classification and isolation;

[0029] Sterilization: Loosen the outer cover of the chamber and place it in a high-pressure steam sterilizer. Sterilize at 121℃ and 0.1MPa for 20 minutes. During this period, steam will evenly penetrate each layer through the mesh of the container and the gaps between the layers.

[0030] Subsequent processing: After sterilization, tighten the cover and remove the item. After cooling, you can directly observe the condition of each layer of items, count the quantity by layer (no need to search), and transfer them directly to the sterile storage cabinet to avoid secondary contamination.

[0031] Example 2: Adjustable Spacing Layered Sterilization Chamber for Medical Institutions

[0032] 1. Structural improvements

[0033] Fixed connecting rod: Made of polyethersulfone, with axial graduations (1cm accuracy) on the surface and equipped with a sliding elastic limiting ring (replacing the fixed protrusion), which can adjust the layer spacing according to the height of the item (range 2-5cm).

[0034] Storage trays: 2, made of polycarbonate trays with ventilation holes (3mm hole diameter), with anti-slip silicone pads on the bottom to prevent small instruments from sliding;

[0035] Threaded sealing structure: The effective length of the external thread is increased to 10mm, and the sealing gasket is made of high-temperature resistant fluororubber material, which is suitable for 134℃ high-temperature sterilization process.

[0036] 2. Typical Application (Sterilization of Surgical Instrument Accessories)

[0037] Place the hemostat accessories (8cm long) in the lower compartment and adjust the limiting rings to set the layer spacing to 5cm. Place the suture needle storage box (3cm high) in the upper compartment, with a layer spacing of 3cm. After sterilization, the accessories can be directly distributed to different operating tables according to their layers, avoiding mixing and improving instrument turnover efficiency.

[0038] Common features of the embodiments

[0039] 1. All components are made of transparent materials that can withstand temperatures above 121°C, meeting the requirements for at least 50 autoclave cycles;

[0040] 2. The layered structure increases the exposed area of ​​a single item by more than 30%, improves steam penetration efficiency, and reduces the wet package rate to below 1%;

[0041] 3. The tightening torque of the screw-type sealing structure is controlled at 0.5-1 N·m, which ensures reliable sealing and facilitates manual loading and unloading.

[0042] 4. The adjustable tightness of the screw-type structure allows the device to adapt to both the steam flow requirements during sterilization and the sealing requirements during storage, achieving full-process adaptation from sterilization to storage to dispensing.

[0043] The above embodiments have verified the applicability of this utility model in different scenarios. Its simple structure and convenient operation can effectively solve the pain points of sterilization management of small items.

[0044] This utility model is not limited to this specific embodiment. For those skilled in the art, simple copying and improvement without creative effort are all within the scope of protection of the claims of this utility model.

Claims

1. A physical separation layered sterilization chamber for aseptic processing, characterized by: The device includes an outer cover for a cavity and a layered loading assembly. The outer cover is a cylindrical structure with one end open and the other closed, made of a rigid, transparent, and high-temperature resistant material. The layered loading assembly includes a loading box base, a fixed connecting rod, and at least two loading boxes. The outer cover and the loading box base are detachably connected by a screw-sealed structure. One end of the fixed connecting rod is fixed to the loading box base, and the other end extends upward along the axial direction. The loading box is a disc-shaped structure with an open top and an annular connecting ring on its edge. The loading boxes are movably fitted onto the fixed connecting rod through the connecting ring and are spaced apart along its axial direction. The fixed connecting rod has a limiting protrusion to restrict the axial displacement of the loading boxes.

2. The physically isolated layered sterilization chamber for aseptic operation according to claim 1, characterized in that: The outer casing of the cavity is made of borosilicate glass or polycarbonate.

3. The physically isolated layered sterilization chamber for aseptic operation according to claim 1, characterized in that: The screw-sealing structure includes a continuous external thread integrally formed on the outer circumference of the outer cover opening of the cavity, and an internal thread groove adapted to the external thread provided on the edge of the base of the cargo box. The pitch and direction of the internal thread are consistent with those of the external thread.

4. The physically isolated layered sterilization chamber for aseptic operation according to claim 1, characterized in that: The container is a hollow mesh structure or a disc with ventilation holes, and its inner diameter is smaller than the inner diameter of the outer cover of the cavity.

5. The physically isolated layered sterilization chamber for aseptic operation according to claim 3, characterized in that: The screw-on sealing structure can be tightened according to the usage scenario. During sterilization, it can be loosened to allow the chamber to connect with the outside, and tightened to achieve a seal during storage or distribution.

6. The physically isolated layered sterilization chamber for aseptic operation according to claim 3, characterized in that: A sealing gasket is embedded at the bottom of the internal threaded groove of the cargo box base.

7. The physically isolated layered sterilization chamber for aseptic operation according to claim 1, characterized in that: The fixed connecting rod is fixed to the base of the cargo box by integral molding of the material or by structural perforation.

8. The physically isolated layered sterilization chamber for aseptic operation according to claim 1, characterized in that: The limiting protrusion is an annular protrusion, spaced apart along the axial direction of the fixed connecting rod; or it is a slidable elastic limiting ring.

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