A cutting device for moist heat sterilization of a breathing bag

Abstract

The application discloses a cutting device for moist heat sterilization breathing bags, which comprises a bottom plate, a pressing plate and a cutting mechanism. The bottom plate is used for placing the moist heat sterilization breathing bag. The pressing plate is elastically mounted on the top of the bottom plate and used for elastically pressing and positioning the moist heat sterilization breathing bag. The cutting mechanism is arranged on the pressing plate and can slide along the length direction of the pressing plate to perform directional cutting on the moist heat sterilization breathing bag. The cutting mechanism comprises a blade. The blade is a circular blade and can be elastically abutted on the moist heat sterilization breathing bag in a rotating mode. When the cutting mechanism performs the sliding cutting operation, the blade rotates to cut the moist heat sterilization breathing bag. The application has the advantages of compact structure, integrated positioning, pressing and cutting operation, smooth and uniform cutting, and effective reduction of material fiber tearing and particle falling.

Description

Technical Field

[0001] This invention relates to the technical field of opening aseptic packaging for medical devices, and more particularly to a cutting device for a moist heat sterilization breathing bag. Background Technology

[0002] Moist heat sterilization breathing bags are key packaging materials widely used in the production of sterile pharmaceutical preparations. They are typically made of medical dialysis paper and a medical composite film, and are used for the sterilization, preservation, and aseptic transport of items such as rubber stoppers, vials, and cleanroom garments. During aseptic production operations, the sterilized breathing bag needs to be opened in a Class A laminar flow environment to remove the sterile items inside.

[0003] Currently, the industry commonly uses scissors to cut the openings in breathing bags. However, this method has several prominent problems in actual use: First, it poses a significant safety hazard. When operators wear RABS gloves or isolator gloves, they are very likely to cut the gloves, damaging the aseptic barrier. Second, it carries a high risk of particulate contamination. The squeezing and cutting method of the scissors can easily cause fibers and particles from the bag material to fall off, contaminating the cleanroom environment. Third, it is inconvenient to operate. It is difficult to control the scissors smoothly when wearing multiple layers of gloves, and it is difficult to ensure the straightness of the cut line when cutting manually. Summary of the Invention

[0004] In view of the aforementioned problems with existing breathing bag cutting methods, this invention aims to provide a cutting device for breathing bags used in moist heat sterilization.

[0005] The specific technical solution is as follows: A cutting device for a moisture heat sterilization breathing bag, comprising: The base plate is used to place the moisture heat sterilization breathing bag. A pressure plate, which is elastically installed on the top of the base plate, is used to elastically press and position the moist heat sterilization breathing bag; A cutting mechanism is disposed on the pressure plate and can slide along the length of the pressure plate to perform directional cutting on the moist heat sterilization breathing bag; The cutting mechanism includes: The blade is a circular blade that rotatably and elastically abuts against the moist heat sterilization breathing bag. When the cutting mechanism performs a sliding cutting operation, the blade rotates to cut the moist heat sterilization breathing bag.

[0006] As a further improvement and optimization of this solution, a cutting groove is provided on the pressure plate along its own length direction, the blade is disposed in the cutting groove, and the bottom of the blade is in elastic contact with the moist heat sterilization breathing bag.

[0007] As a further improvement and optimization of this solution, the cutting mechanism also includes: A tool holder, which is slidably mounted on top of the pressure plate along the length of the pressure plate, and the blade is rotatably and elastically mounted on the tool holder via a mounting assembly; A handle is located on top of the tool holder.

[0008] As a further improvement and optimization of this solution, the installation components include: A blade holder, wherein the blade is disposed within the cutting groove and the blade is rotatably mounted on the blade holder; A connecting rod, which is arranged longitudinally, with its top connected to the tool holder and its bottom axially slidably connected to the tool support; A cutting spring is sleeved on the outside of the connecting rod and abuts against the blade holder and the blade support.

[0009] As a further improvement and optimization of this solution, a mounting port is formed on the tool holder, and the blade is rotatably mounted in the mounting port via a rotating shaft; The bottom of the connecting rod slides through the top of the tool holder and extends into the mounting port, and is threadedly connected to a first limiting nut, which engages with the inner top wall of the mounting port.

[0010] As a further improvement and optimization of this solution, the pressure plate has two guide rails, which are located on both sides of the cutting groove, and each guide rail is arranged along the length direction of the pressure plate. Two sliding grooves are formed at both ends of the tool holder, and the two sliding grooves are slidably engaged with the two guide rails respectively.

[0011] As a further improvement and optimization of this solution, the guide rail is a T-shaped guide rail, and the slide groove is a T-shaped slide groove that matches the guide rail.

[0012] As a further improvement and optimization of this solution, the pressure plate is provided with longitudinally arranged mounting columns at both ends along its own length direction, and a second limiting nut is threadedly installed on the top of each mounting column. The pressure plate is slidably mounted longitudinally on the two mounting posts at both ends. Each mounting post is fitted with a positioning clamping spring, which abuts against the second limiting nut and the top of the pressure plate.

[0013] As a further improvement and optimization of this solution, the top of the pressure plate has two handles, which are distributed on both sides of the pressure plate along the width direction of the pressure plate.

[0014] As a further improvement and optimization of this solution, the bottom of the pressure plate has a rubber layer.

[0015] The positive effects of the above technical solution compared with the existing technology are: (1) The present invention can automatically and elastically press and position the breathing bag after it is placed by elastically installing the pressure plate on the top of the base plate. It is convenient to operate and does not require additional clamping steps.

[0016] (2) The cutting mechanism of the present invention is integrated on the pressure plate and can slide along the length of the pressure plate. The operator only needs to push the cutting mechanism to complete the directional cutting.

[0017] (3) The circular blade of the present invention can be rotatably and elastically abutted against the breathing bag. When cutting, the blade slides and rotates around its own axis, replacing the squeezing and cutting method of traditional scissors with a rolling cutting method. This not only reduces cutting resistance and makes the action smooth, but also adapts to the slight changes in the thickness of the bag, ensuring that the cutting depth is uniform. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a cutting device for a moisture heat sterilization breathing bag according to the present invention; Figure 2 This is an exploded schematic diagram of a cutting device for a moisture heat sterilization breathing bag according to the present invention; Figure 3 This is a schematic diagram of the pressure plate of a cutting device for a moisture heat sterilization breathing bag according to the present invention; Figure 4 This is a schematic diagram of the cutting mechanism of a cutting device for a moisture heat sterilization breathing bag according to the present invention; Figure 5 This is an exploded schematic diagram of the cutting mechanism of a cutting device for a moisture heat sterilization breathing bag according to the present invention; In the attached diagram: 1. Base plate; 2. Pressure plate; 3. Cutting mechanism; 4. Mounting post; 5. Positioning and clamping spring; 6. Second limit nut; 21. Cutting groove; 22. Handle; 23. Guide rail; 24. Limiting post; 31. Tool holder; 32. Handle; 33. Mounting assembly; 34. Blade; 35. Rotating shaft; 311. Slide groove; 332. Connecting rod; 333. First limit nut; 334. Cutting spring; 3311. Mounting port. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Figure 1 This is a schematic diagram of the structure of a cutting device for a moisture heat sterilization breathing bag according to the present invention; Figure 2 This is an exploded schematic diagram of a cutting device for a moisture heat sterilization breathing bag according to the present invention; Figure 3 This is a schematic diagram of the pressure plate of a cutting device for a moisture heat sterilization breathing bag according to the present invention; Figure 4 This is a schematic diagram of the cutting mechanism of a cutting device for a moisture heat sterilization breathing bag according to the present invention; Figure 5 This is an exploded view of the cutting mechanism of a cutting device for a moisture heat sterilization breathing bag according to the present invention. Figure 1-5 The diagram illustrates a preferred embodiment of a cutting device for a moist heat sterilization breathing bag, comprising: a base plate 1, a pressure plate 2, and a cutting mechanism 3. The base plate 1 is used to place the moist heat sterilization breathing bag. The pressure plate 2 is elastically mounted on the top of the base plate 1 to elastically hold and position the moist heat sterilization breathing bag. The cutting mechanism 3 is disposed on the pressure plate 2 and can slide along the length of the pressure plate 2 to perform directional cutting on the moist heat sterilization breathing bag. The cutting mechanism 3 includes: a blade 34, which is a circular blade 34 and can be rotatably and elastically abutted against the moist heat sterilization breathing bag. When the cutting mechanism 3 performs a sliding cutting operation, the blade 34 rotates to cut the moist heat sterilization breathing bag.

[0023] In this application, by elastically mounting the pressure plate 2 on the top of the base plate 1, it can be automatically and elastically pressed and positioned after the breathing bag is placed, which is convenient to operate and does not require additional clamping steps.

[0024] In this application, the cutting mechanism 3 is integrated on the pressure plate 2 and can slide along the length of the pressure plate 2. The operator only needs to push the cutting mechanism 3 to complete the directional cutting.

[0025] In this application, the circular blade 34 can be rotatably and elastically pressed against the breathing bag. During cutting, the blade 34 slides while rotating around its own axis, replacing the squeezing and shearing method of traditional scissors with a rolling cutting method. This not only reduces cutting resistance and makes the action smooth, but also adapts to slight changes in the thickness of the bag, ensuring a uniform cutting depth.

[0026] The structure of this application is compact, and the positioning, clamping and cutting operations are integrated. The cutting is smooth and uniform, effectively reducing the tearing of material fibers and the shedding of particles. It is especially suitable for aseptic operating environments in clean areas.

[0027] Furthermore, as a preferred embodiment, the pressure plate 2 is provided with a cutting groove 21 along its own length direction, the blade 34 is disposed in the cutting groove 21, and the bottom of the blade 34 is in elastic contact with the moist heat sterilization breathing bag.

[0028] In this application, a cutting groove 21 is opened on the pressure plate 2, and the blade 34 is set in the cutting groove 21. The cutting groove 21 forms a physical shield on both sides of the blade 34, reducing the safety risk of the operator accidentally touching the blade with their fingers. The bottom of the blade 34 is in elastic contact with the breathing bag, so that the blade 34 maintains a constant contact pressure throughout the cutting process, avoiding the fluctuation of cutting depth caused by unevenness of the bottom plate 1 or the surface of the bag.

[0029] Furthermore, in a preferred embodiment, the cutting mechanism 3 further includes a blade holder 31 and a handle 32. The blade holder 31 is slidably mounted on the top of the pressure plate 2 along its length. The blade 34 is rotatably and elastically mounted on the blade holder 31 via the mounting assembly 33. The handle 32 is located on the top of the blade holder 31. The operator can use the handle 32 to hold and push the blade with one hand to complete the cutting, making the operation labor-saving and convenient.

[0030] Furthermore, in a preferred embodiment, the mounting assembly 33 includes a blade holder, a connecting rod 332, and a cutting spring 334. The blade holder is disposed within the cutting groove 21, and the blade 34 is rotatably mounted on the blade holder. The connecting rod 332 is arranged longitudinally, with its top connected to the blade holder 31 and its bottom axially slidably connected to the blade holder. The cutting spring 334 is sleeved on the outside of the connecting rod 332 and abuts against the blade holder and the blade holder 31.

[0031] The mounting assembly 33 of this application adopts a cooperative structure of a blade holder, a connecting rod 332, and a cutting spring 334: the blade holder carries the rotatable blade 34, the connecting rod 332 connects the blade holder 31 and the blade holder and allows axial relative sliding, and the cutting spring 334 abuts against the blade holder and the blade holder 31 to provide elastic preload. This structure allows the blade 34 to adaptively move upward by compressing the cutting spring 334 when it encounters changes in bag thickness or local bulges, avoiding a sudden increase in cutting resistance or cutting the items inside the bag; when the thickness returns to normal, the cutting spring 334 pushes the blade 34 back to its original position, maintaining cutting continuity.

[0032] Furthermore, in a preferred embodiment, a mounting opening 3311 is formed on the tool holder, and the blade 34 is rotatably mounted in the mounting opening 3311 via a rotating shaft 35; wherein, the bottom of the connecting rod 332 slides through the top of the tool holder and extends into the mounting opening 3311, and is threadedly connected to a first limiting nut 333, which is in a limiting engagement with the inner top wall of the mounting opening 3311.

[0033] In this application, a mounting opening 3311 is formed on the tool holder, and the blade 34 is rotatably mounted in the mounting opening 3311 via a rotating shaft 35. The structure is simple and the assembly is reliable. The bottom of the connecting rod 332 slides through the top of the tool holder and is threadedly connected to the first limiting nut 333. The first limiting nut 333 forms a limiting fit with the inner wall of the top of the mounting opening 3311, which can prevent the connecting rod 332 from coming out of the tool holder, and at the same time limit the maximum downward displacement of the tool holder relative to the connecting rod 332. The threaded connection not only makes the axial position of the first limiting nut 333 adjustable, thereby adjusting the initial elastic preload of the blade 34, but also has the ability to be disassembled, which is convenient for maintenance and replacement.

[0034] Furthermore, as a preferred embodiment, the pressure plate 2 has two guide rails 23, which are located on both sides of the cutting groove 21, and each guide rail 23 is arranged along the length direction of the pressure plate 2. Two sliding grooves 311 are formed at both ends of the knife holder 31, and the two sliding grooves 311 are slidably engaged with the two guide rails 23 respectively.

[0035] Furthermore, as a preferred embodiment, the guide rail 23 is a T-shaped guide rail 23, and the slide groove 311 is a T-shaped slide groove 311 that matches the guide rail 23.

[0036] Furthermore, as a preferred embodiment, the pressure plate 2 is provided with longitudinally arranged mounting posts 4 at both ends along its own length direction, and a second limiting nut 6 is threadedly installed on the top of each mounting post 4; wherein, the two ends of the pressure plate 2 are respectively slidably mounted on the two mounting posts 4, and a positioning compression spring 5 is sleeved on the outside of each mounting post 4, and the positioning compression spring 5 abuts against the second limiting nut 6 and the top of the pressure plate 2.

[0037] In this application, the pressure plate 2 is longitudinally slidably installed at both ends by mounting columns 4. The top of the mounting column 4 is threaded with a second limiting nut 6. The positioning and clamping spring 5 abuts against the second limiting nut 6 and the top of the pressure plate 2. This structure makes the elastic clamping force of the pressure plate 2 on the base plate 1 come from the positioning and clamping spring 5. When the pressure plate 2 is lifted upward, the spring is compressed. After being released, the spring rebounds and drives the pressure plate 2 downward to clamp the bag body. Moreover, the second limiting nut 6 is not only adjustable in thread position, which can change the pre-compression amount of the positioning and clamping spring 5, thereby adjusting the clamping force, but it is also detachable, which further facilitates the maintenance and replacement of the device.

[0038] Furthermore, as a preferred embodiment, the top of the pressure plate 2 has two handles 22, which are distributed on both sides of the pressure plate 2 along its width. When it is necessary to lift the pressure plate 2 to place or remove the breathing bag, the operator can grasp the handles 22 and pull upward to lift the pressure plate 2 as a whole.

[0039] Furthermore, as a preferred embodiment, the bottom of the pressure plate 2 has a rubber layer.

[0040] In this application, a rubber layer is provided at the bottom of the pressure plate 2, which increases the friction between the pressure plate 2 and the surface of the breathing bag. During the cutting process, it effectively prevents the bag from sliding laterally or wrinkling due to the tangential force of the blade 34. At the same time, the rubber material has a certain elastic buffering effect, which can prevent the pressure plate 2 from directly contacting the surface of the breathing bag and causing indentations or damage.

[0041] Even better, the pressure plate 2 also has two limiting posts 24, which are respectively set at both ends of the cutting groove 21. When the tool holder 31 slides to the end of the limiting groove, the tool holder 31 is limited and engaged with the corresponding limiting post 24 to prevent the tool holder 31 from leaving the track.

[0042] Even better, the bottom of the limiting post 24 is threadedly connected to the pressure plate 2.

[0043] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A cutting device for a breathing bag used in moist heat sterilization, characterized in that, include: The base plate is used to place the moisture heat sterilization breathing bag. A pressure plate, which is elastically installed on the top of the base plate, is used to elastically press and position the moist heat sterilization breathing bag; A cutting mechanism is disposed on the pressure plate and can slide along the length of the pressure plate to perform directional cutting on the moist heat sterilization breathing bag; The cutting mechanism includes: The blade is a circular blade that rotatably and elastically abuts against the moist heat sterilization breathing bag. When the cutting mechanism performs a sliding cutting operation, the blade rotates to cut the moist heat sterilization breathing bag.

2. The cutting device for a moist heat sterilization breathing bag according to claim 1, characterized in that, The pressure plate has a cutting groove along its length, the blade is disposed in the cutting groove, and the bottom of the blade is in elastic contact with the moist heat sterilization breathing bag.

3. The cutting device for a moist heat sterilization breathing bag according to claim 2, characterized in that, The cutting mechanism also includes: A tool holder, which is slidably mounted on top of the pressure plate along the length of the pressure plate, and the blade is rotatably and elastically mounted on the tool holder via a mounting assembly; A handle is located on top of the tool holder.

4. The cutting device for a moist heat sterilization breathing bag according to claim 3, characterized in that, The installation components include: A blade holder, wherein the blade is disposed within the cutting groove and the blade is rotatably mounted on the blade holder; A connecting rod, which is arranged longitudinally, with its top connected to the tool holder and its bottom axially slidably connected to the tool support; A cutting spring is sleeved on the outside of the connecting rod and abuts against the blade holder and the blade support.

5. The cutting device for a moist heat sterilization breathing bag according to claim 4, characterized in that, The tool holder has a mounting opening, and the blade is rotatably mounted in the mounting opening via a rotating shaft; The bottom of the connecting rod slides through the top of the tool holder and extends into the mounting port, and is threadedly connected to a first limiting nut, which engages with the inner top wall of the mounting port.

6. The cutting device for a moist heat sterilization breathing bag according to claim 3, characterized in that, The pressure plate has two guide rails, which are located on both sides of the cutting groove. Each guide rail is arranged along the length of the pressure plate. Two sliding grooves are formed at both ends of the tool holder, and the two sliding grooves are slidably engaged with the two guide rails respectively.

7. The cutting device for a moist heat sterilization breathing bag according to claim 6, characterized in that, The guide rail is a T-shaped guide rail, and the slide groove is a T-shaped slide groove that matches the guide rail.

8. The cutting device for a moist heat sterilization breathing bag according to claim 1, characterized in that, The pressure plate is provided with longitudinally arranged mounting columns at both ends along its own length direction, and a second limiting nut is threadedly installed on the top of each mounting column. The pressure plate is slidably mounted longitudinally on the two mounting posts at both ends. Each mounting post is fitted with a positioning clamping spring, which abuts against the second limiting nut and the top of the pressure plate.

9. The cutting device for a breathing bag used in moist heat sterilization according to claim 1, characterized in that, The pressure plate has two handles on its top, and the two handles are distributed on both sides of the pressure plate along the width direction of the pressure plate.

10. The cutting device for a moist heat sterilization breathing bag according to claim 1, characterized in that, The bottom of the pressure plate has a rubber layer.

Images