Sterilization packaging apparatus for medical instruments

Abstract

The application discloses a kind of medical instrument sterilization packaging equipment, comprising: the device shell for medical instrument to carry out high-pressure steam sterilization operation, the lower film assembly is detachably installed in the device shell by pulling support, the device shell inside is also provided with upper film assembly for mutually cooperating packaging medical instrument with lower film assembly;Water storage tank is arranged at the bottom of device shell, the heating element is arranged at the bottom side of water storage tank;Film packaging structure is located above upper film assembly, for compressing and connecting the film of upper film assembly and the film of lower film assembly and carrying out heat sealing operation;Steam drive structure is arranged in the device shell, for driving film packaging structure to operate by steam to compress the film of upper film assembly and the film of lower film assembly.The application can implement high-pressure steam sterilization operation to medical instrument in the device shell, and simultaneously, utilize steam drive structure to control film packaging structure to operate synchronously to complete the packaging of medical instrument.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a sterilization packaging device for medical devices. Background Technology

[0002] Reusable medical devices are medical devices that can be reused between different patients. When reusing them, the cleaning, disinfection, or sterilization procedures must be strictly followed in accordance with the relevant regulations for reusable medical devices, and the effectiveness must be monitored. The purpose of packaging reusable medical devices is to maintain the sterile state of the sterilized equipment during storage and transportation, and to ensure that it remains sterile before use. Therefore, the quality of packaging is one of the important links in ensuring the quality of sterilized medical devices.

[0003] Reusable medical devices are often sterilized using high-temperature, high-pressure steam. After sterilization, the medical devices are usually removed and packaged separately in a sterile environment for storage and reuse.

[0004] However, this type of operation requires strict sterilization and packaging environment requirements, consumes a lot of manpower and resources, and the step-by-step sterilization and packaging operations also consume a lot of operation time.

[0005] Therefore, this application proposes a sterilization packaging device for medical devices to solve the above-mentioned technical problems. Summary of the Invention

[0006] The main objective of this invention is to provide a sterilization and packaging device for medical devices that can simultaneously perform high-pressure steam sterilization on reusable medical devices and complete the packaging of medical devices under a steam sterilization environment.

[0007] The present invention solves the above-mentioned technical problems by adopting the following technical solutions:

[0008] A sterilization packaging device for medical devices, comprising:

[0009] The device housing has an internal high-pressure steam sterilization system for medical devices. Inside the device housing, a pull-out bracket for detachable installation of the lower film assembly is slidably installed via a limiting guide rail. Inside the device housing, an upper film assembly is also provided for cooperation with the lower film assembly to package medical devices.

[0010] The water storage tank is located at the bottom of the device housing, with a support base and a heating element for evaporating the internal pure water on the bottom side;

[0011] A film packaging structure, located above the upper film assembly, is used to press the film connecting the upper film assembly and the film of the lower film assembly together and perform a heat sealing operation.

[0012] A steam-driven structure, located inside the device housing, is used to operate the film packaging structure by steam while the device housing is undergoing high-pressure steam sterilization, pressing the film of the upper film assembly and the film of the lower film assembly together.

[0013] Preferably, the lower film assembly includes a mounting base detachably mounted on a pull-out bracket, two sets of lower film rollers mounted on the mounting base, a first coil spring mounted on the lower film rollers, a lower film body wound around the outer side of the lower film rollers at both ends, multiple sets of positioning blocks located on the upper surface of the mounting base, and a blade slot in an annular structure located on the upper surface of the mounting base. The positioning blocks are annularly distributed inside the blade slot for positioning and placing the medical device at the center of the annulus.

[0014] Preferably, the lower film assembly is further provided with a manual film changing structure for manual film replacement. The manual film changing structure includes a ratchet disposed at one end of a set of lower film rollers, a pawl located in the mounting base for engaging the ratchet, and a hand crank disposed on the ratchet and passing through the mounting base to the outside for manually driving the ratchet to rotate.

[0015] Preferably, the upper film assembly includes a film support that slides vertically within the device housing, an upper film roller disposed at both ends of the film support, an upper film body wound around the outer side of the upper film roller at both ends, and a second coil spring mounted on the upper film roller.

[0016] Preferably, it further includes a lifting drive structure disposed in the device housing and connected to the pull-out bracket for driving the film support to move up and down during the sliding of the pull-out bracket, and an automatic film replacement structure disposed in the device housing and connected to the film support for controlling the upper film body to automatically replace the film during the lifting of the film support.

[0017] Preferably, a drive rack extending along the sliding direction of the pull-out bracket is provided on the inner side of the pull-out bracket;

[0018] The lifting drive structure includes a lifting rack mounted on a film support and sliding in the vertical direction, and a drive gear and a connecting gear rotating inside the device housing via a limiting gear shaft. The drive gear and the connecting gear are connected by a synchronous belt pulley that rotates coaxially. The lifting rack and the connecting gear mesh with each other, and the drive gear and the drive rack mesh with each other.

[0019] During the sliding process of the pull-out bracket, the drive rack meshes and drives the drive gear to rotate. The drive gear drives the connecting gear to rotate synchronously through the synchronous belt pulley. The connecting gear meshes and drives the lifting rack to lift the film bracket.

[0020] Preferably, the automatic film changing structure includes a positioning rack installed inside the device housing via a rack bracket for vertically passing through the film support, a rotating gear rotating inside the film support for meshing with the positioning rack, a one-way bearing connected to the rotating gear via an inner bushing, and a meshing gear set in which one gear is connected to the outer bushing of the one-way bearing and the other gear is coaxially mounted on a set of upper film rollers.

[0021] Preferably, the film packaging structure includes a mounting block located at the top inside the device housing, a limiting telescopic rod that extends and retracts vertically on the mounting block, a connecting pressure block located at the end of the limiting telescopic rod for pressing the film connecting the upper film assembly and the film connecting the lower film assembly, and a cutting and heat-sealing assembly mounted on the connecting pressure block for cutting and heat-sealing the film connecting the upper film assembly and the lower film assembly. The limiting telescopic rod is provided with a compression spring inside for continuously driving the limiting telescopic rod to extend under force.

[0022] Preferably, the cutting and heat-sealing assembly includes an inner pressure plate located at the bottom of the connecting pressure block, an outer ring pressure plate located outside the inner pressure plate, a cutting positioning ring disposed at the bottom outer ends of the inner pressure plate and the outer ring pressure plate, an annular cutting blade installed at the bottom of the connecting pressure block to pass through the gap between the inner pressure plate and the outer ring pressure plate, an annular heat-sealing block disposed on the annular cutting blade for pressing the film for heat sealing, a connecting spring disposed at the bottom of the connecting pressure block for connecting with the inner pressure plate, and multiple sets of lifting connecting parts disposed on the connecting pressure block for connecting the inner pressure plate and the outer ring pressure plate, wherein:

[0023] A space is formed between the two sets of cutting positioning rings to accommodate the vertical movement of the annular heat-sealing block;

[0024] The lifting connector specifically includes a plug-in ring groove disposed within the connecting pressure block, a limiting ring block that slides vertically within the plug-in ring groove, and a plug-in ring block that passes through the connecting pressure block for use as an inner pressure plate or outer ring pressure plate.

[0025] Preferably, the steam drive structure includes a connecting bracket disposed inside the device housing, an inclined nozzle mounted above the connecting bracket, a steam wheel rotatably disposed above the inclined nozzle for cooperating with the inclined nozzle to drive rotation during the pure water evaporation process, a rope mounting ring mounted on the steam wheel, a high-temperature resistant rope wrapped around the outside of the rope mounting ring, a lifting block disposed at the end of the high-temperature resistant rope and sliding vertically within the device housing, a multi-section telescopic rod with its two ends respectively hinged to the lifting block and the connecting pressure block, and a lever support shaft disposed in the middle of the multi-section telescopic rod and rotatably mounted on the connecting bracket for lever rotation support of the multi-section telescopic rod.

[0026] This invention provides a sterilization packaging device for medical devices. Compared with existing technologies, the advantages of this invention are as follows:

[0027] 1. This invention provides an upper film assembly and a lower film assembly inside the device housing. This allows for simultaneous high-pressure steam sterilization of medical devices within the housing, while a steam-driven structure controls the synchronous operation of the film packaging structure. This enables the film packaging structure to press the upper and lower films together, encapsulating the medical device and then cutting and heat-sealing the pressed outer packaging film. This facilitates simultaneous high-pressure steam sterilization of reusable medical devices and packaging within the steam sterilization environment, saving sterilization and packaging time, improving the sterilization efficiency of reusable medical devices, and enhancing ease of use.

[0028] 2. The present invention provides a cutting and heat-sealing assembly on the connecting pressure block. During the pressing process of the connecting pressure block, the connecting spring allows the inner pressure plate to continuously press the adhered film. During the pressing process of the connecting pressure block, the annular cutting blade drives the annular heat-sealing pressure block to move down. When the annular cutting blade is inserted into the bottom of the blade slot, the film can be cut. At this time, the annular heat-sealing pressure block, together with the film structure, can complete the edge sealing of the cut film. Therefore, this structure can improve the heat-sealing packaging efficiency while ensuring the cutting and heat-sealing quality.

[0029] 3. By setting up an interconnected lifting drive structure and an automatic film changing structure, the present invention enables the upper film assembly to automatically lift and lower during the sliding process of the pull-out bracket by using a drive rack and pinion. During the lifting and lowering of the upper film assembly, the automatic film changing structure can complete one rotation of the upper film roller, thereby completing one automated stretching and replacement process of the upper film assembly, which is convenient to use. Attached Figure Description

[0030] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0031] Figure 1 For the overall stereoscopic view of the present invention Figure 1 ;

[0032] Figure 2 For the overall stereoscopic view of the present invention Figure 2 ;

[0033] Figure 3 This is a three-dimensional schematic diagram of the internal connection structure of the device of the present invention;

[0034] Figure 4 This is a three-dimensional cross-sectional view of the water storage tank of the present invention;

[0035] Figure 5 This is a three-dimensional schematic diagram of the structural connection between the film packaging structure and the steam-driven structure of the present invention;

[0036] Figure 6 This is a three-dimensional cross-sectional view of the limiting telescopic rod of the present invention;

[0037] Figure 7 This is a cross-sectional schematic diagram of the installation and connection structure of the cutting heat-sealing assembly of the present invention;

[0038] Figure 8 This is a perspective view of the driving lifting part of the steam-driven structure of the present invention;

[0039] Figure 9 This is a three-dimensional schematic diagram of the structural connection of the lifting drive structure of the present invention;

[0040] Figure 10 This is a three-dimensional schematic diagram of the structural connection of the thin-film assembly of the present invention;

[0041] Figure 11 This is a three-dimensional schematic diagram of the structural connections of the automatic membrane changing structure of the present invention;

[0042] Figure 12 This is a three-dimensional schematic diagram of the structural connection of the pull-out bracket of the present invention;

[0043] Figure 13 This is a three-dimensional schematic diagram of the thin-film assembly of the present invention;

[0044] Figure 14 This is a three-dimensional structural disassembly diagram of the thin-film assembly according to the present invention;

[0045] Figure 15 This is a three-dimensional schematic diagram of the structural connection of the manual membrane replacement structure of the present invention.

[0046] In the picture:

[0047] 1. Device housing; 11. Removable rear cover; 12. Cold air exhaust pipe fittings; 13. Steam exhaust pipe fittings; 14. Pull-out bracket; 141. Drive rack; 15. Fixing components;

[0048] 2. Water storage tank; 21. Support base; 22. Grille; 23. Water inlet assembly; 24. Water outlet assembly; 25. Heating element;

[0049] 3. Lower film assembly; 31. Mounting base; 32. Lower film roller; 33. First coil spring; 34. Lower film body; 35. Positioning block; 36. Blade slot;

[0050] 4. Manual membrane changing structure; 41. Hand crank lever; 42. Ratchet; 43. Pawl;

[0051] 5. Upper film assembly; 51. Film support; 52. First limiting slide; 53. Upper film roller; 54. Upper film body; 55. Second coil spring;

[0052] 6. Lifting drive structure; 61. Drive gear; 62. Synchronous belt pulley; 63. Connecting gear; 64. Limiting gear shaft; 65. Lifting rack; 651. Second limiting sliding component;

[0053] 7. Automatic film changing structure; 71. Rack and pinion support; 72. Positioning rack; 73. Rotating gear; 74. One-way bearing; 75. Meshing gear set;

[0054] 8. Film packaging structure; 81. Mounting block; 82. Limiting telescopic rod; 83. Compression spring; 84. Connecting pressure block; 85. Cutting and heat sealing assembly; 851. Lifting connector; 8511. Insertion ring groove; 8512. Insertion ring block; 8513. Limiting ring block; 852. Inner pressure plate; 853. Outer ring pressure plate; 854. Cutting positioning ring; 855. Annular cutting blade; 856. Annular heat sealing pressure block; 857. Connecting spring;

[0055] 9. Steam-driven structure; 91. Connecting bracket; 92. Inclined nozzle; 93. Steam impeller; 94. Rope mounting ring; 95. High-temperature resistant rope; 96. Lifting block; 961. Third limit sliding component; 97. Lever support shaft; 98. Multi-section telescopic rod. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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.

[0057] For details in the embodiments, please refer to Figures 1 to 15 .

[0058] like Figure 1 , Figure 2 , Figure 3 , Figure 9 and Figure 12 As shown, the present invention provides a sterilization packaging device for medical devices, comprising:

[0059] The device housing 1 is used for high-pressure steam sterilization of medical devices. Inside the device housing 1, a pull-out bracket 14 for detachable installation of the lower film assembly 3 is slidably installed via a limiting guide rail. Inside the device housing 1, an upper film assembly 5 is also provided for cooperation with the lower film assembly 3 to package medical devices.

[0060] The water storage tank 2 is located at the bottom of the device housing 1. A support base 21 and a heating element 25 for evaporating the internal pure water are provided on the bottom side. Here, the heating element 25 is used as a power source for steam heating.

[0061] The film packaging structure 8 is located above the upper film assembly 5 and is used to press the film connecting the upper film assembly 5 and the film of the lower film assembly 3 together and perform a heat sealing operation.

[0062] The steam-driven structure 9 is installed inside the device housing 1 and is used to drive the film packaging structure 8 to press the film of the upper film assembly 5 and the film of the lower film assembly 3 while the device housing 1 is being sterilized by high pressure steam.

[0063] The overall structure of the device housing 1 is as follows: Figure 1 and Figure 2 As shown, similar to traditional high-pressure steam sterilization equipment, the top of the device housing 1 is equipped with a steam exhaust pipe 13 for rapid steam discharge from the inside of the device housing 1. The steam exhaust pipe 13 consists of a steam exhaust pipe and a control valve. At this time, other components such as a pressure gauge can be added to the top of the device housing 1. The bottom side wall of the device housing 1 is equipped with a cold air exhaust pipe 12 for the cold air to enter and exit the inside of the device housing 1. The cold air exhaust pipe 12 consists of a cold air inlet and outlet pipe with an opening facing downward and a control valve. In addition, the side wall of the device housing 1 is also equipped with a detachable rear cover 11 for the maintenance of the internal film packaging structure 8 and the steam drive structure 9 and the replacement of the upper film assembly 5.

[0064] In addition, the overall structure of water storage tank 2 is as follows: Figure 4 As shown, the top opening of the water storage tank 2 is used to communicate with the inside of the device housing 1. A grid 22 is provided at the top opening of the water storage tank 2. The water storage tank 2 is consistent with the traditional water storage structure, and is provided with a water inlet component 23 and a water outlet component 24, both of which are composed of a water inlet pipe and a threaded plug that is threaded into the water inlet pipe. The connection part of the water inlet component 23 is much higher than the connection part of the water outlet component 24.

[0065] In practice, the pull-out bracket 14 is first pulled out, and the reusable medical device requiring sterilization and packaging is placed on the film of the lower film assembly 3. Then, the pull-out bracket 14 is pushed back. Subsequently, the heating element 25 controls the evaporation of pure water in the water tank 2 to complete the high-pressure steam sterilization of the placed reusable medical device. At this time, the steam-driven structure 9 controls the film packaging structure 8 to operate synchronously, pressing the film of the upper film assembly 5 down to the film of the lower film assembly 3. While sterilizing the medical device, the film packaging structure 8 is controlled to press the upper and lower films tightly, allowing the film to wrap the medical device. The pressed outer packaging film is then cut and heat-sealed. This allows for simultaneous high-pressure steam sterilization of the reusable medical device and simultaneous packaging under steam sterilization conditions, saving sterilization and packaging operation time, improving the sterilization guarantee efficiency of the reusable medical device, and making it convenient to use.

[0066] It should be noted at this point that:

[0067] The limiting guide rail and heating element 25 for limiting the sliding of the pull-out bracket 14 mentioned above are both existing structures. The limiting guide rail can be any type of guide rail structure disclosed in the prior art, and the heating element 25 can be any type of steam heating device disclosed in the prior art. In this case, the heating element 25 can be combined and connected with the water storage tank 2 to form a stable steam generator. Therefore, the specific usage principle and structure of the limiting guide rail and heating element 25 will not be described in detail here.

[0068] When the pull-out bracket 14 is pushed back into the device housing 1, a fixing member 15 can be added to the outside of the connection between the pull-out bracket 14 and the device housing 1 to slide and position the pull-out bracket 14. This can restrict the movement of the pull-out bracket 14 when it is subjected to high-pressure steam sterilization inside the device housing 1. At this time, the fixing member 15 can adopt a snap-on structure or an electronic lock structure disclosed in the prior art.

[0069] like Figure 12 , Figure 13 and Figure 14 As shown, the lower film assembly 3 includes a mounting base 31 detachably mounted on the pull-out bracket 14, two sets of lower film rollers 32 disposed on the mounting base 31, a first coil spring 33 mounted on the lower film rollers 32, a lower film body 34 wound around the outer side of the lower film rollers 32 at both ends, multiple sets of positioning blocks 35 located on the upper surface of the mounting base 31, and a blade slot 36 with an annular structure disposed on the upper surface of the mounting base 31. The positioning blocks 35 are annularly distributed inside the blade slot 36 for positioning and placing the medical device at the center of the annulus on the lower film body 34.

[0070] Among them, such as Figure 14 and Figure 15As shown, the lower film assembly 3 is also provided with a manual film changing structure 4 for manual film replacement. The manual film changing structure 4 includes a ratchet 42 disposed at one end of a set of lower film rollers 32, a pawl 43 located in the mounting base 31 for engaging the ratchet 42, and a hand crank lever 41 disposed on the ratchet 42 and passing through the mounting base 31 to the outside for manually driving the ratchet 42 to rotate.

[0071] In practice, the ratchet 42 can be rotated by controlling the ratchet 42 with the hand crank 41, which can drive the lower film roller 32 to rotate and pull the film for replacement. After the lower film roller 32 rotates, the ratchet 42 and the pawl 43 can effectively prevent the lower film roller 32 from rotating in the opposite direction.

[0072] Therefore, during the rotation of the lower film roller 32, the first coil spring 33 can continuously apply force, and together with the pawl 43 and ratchet 42, it always keeps the lower film body 34 taut, which facilitates the cutting of the lower film body 34.

[0073] It should be noted that the detachable mounting structure of the mounting base 31 on the pull-out bracket 14 can adopt existing publicly disclosed detachable mounting structures such as screw connection or pin slot, and the coil spring, pawl 43 and ratchet 42 are all existing conventional mechanical structure combinations that can be directly used with existing technology.

[0074] In addition, such as Figure 10 and Figure 11 As shown, the upper film assembly 5 includes a film support 51 that slides vertically inside the device housing 1, an upper film roller 53 disposed at both ends of the film support 51, an upper film body 54 that is wound around the outer side of the upper film roller 53 at both ends, and a second coil spring 55 mounted on the upper film roller 53. The second coil spring 55 here adopts the same structural principle as the first coil spring 33 mentioned above.

[0075] like Figure 3 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, in one specific embodiment, the device further includes a lifting drive structure 6 disposed in the device housing 1 and connected to the pull-out bracket 14 for driving the film support 51 to move up and down during the sliding process of the pull-out bracket 14, and an automatic film changing structure 7 disposed in the device housing 1 and connected to the film support 51 for controlling the upper film body 54 to automatically change the film during the lifting process of the film support 51.

[0076] Specifically, such as Figure 9 , Figure 10 and Figure 12 As shown, a drive rack 141 extending along the sliding direction of the pull-out bracket 14 is provided on the inner side of the pull-out bracket 14.

[0077] The lifting drive structure 6 includes a lifting rack 65 mounted on the film support 51 and sliding in the vertical direction, and a drive gear 61 and a connecting gear 63 rotatably inside the device housing 1 via a limiting gear shaft 64. The drive gear 61 and the connecting gear 63 are connected by a synchronous pulley 62 that rotates coaxially. The lifting rack 65 and the connecting gear 63 mesh with each other, and the drive gear 61 and the drive rack 141 mesh with each other.

[0078] During the sliding process of the pull-out bracket 14, the drive rack 141 meshes with and drives the drive gear 61 to rotate. The drive gear 61 drives the connecting gear 63 to rotate synchronously through the synchronous belt pulley 62. The connecting gear 63 meshes with and drives the lifting rack 65 to move the film bracket 51 up and down. Therefore, during the pulling process, the pull-out bracket 14 will drive the lifting rack 65 and the film bracket 51 to move up and down. Every time the film bracket 51 moves up and down, the automatic film changing structure 7 will pull and replace the upper film body 54 on the upper film roller 53 once.

[0079] During the process of the lifting rack 65 driving the membrane support 51 to rise and fall, the membrane support 51 is provided with a first limiting sliding member 52 for limiting the vertical movement of the membrane support 51, and the lifting rack 65 is provided with a second limiting sliding member 651 for limiting the vertical movement of the lifting rack 65. Both the first limiting sliding member 52 and the second limiting sliding member 651 adopt the limiting slide groove slider structure disclosed in the prior art.

[0080] At this time, as Figure 10 and Figure 11 As shown, the automatic film changing structure 7 includes a positioning rack 72 installed inside the device housing 1 via a rack bracket 71 for vertically passing through the film support 51, a rotating gear 73 rotatably connected within the film support 51 for meshing with the positioning rack 72, a one-way bearing 74 connected to the rotating gear 73 via an inner bushing, and a meshing gear set 75 in which one gear is connected to the outer bushing of the one-way bearing 74 and the other gear is coaxially mounted on a set of upper film rollers 53.

[0081] In practice, while the lifting rack 65 drives the film support 51 to rise and fall, the positioning rack 72 is fixed in position. Therefore, when the film support 51 moves through the outside of the positioning rack 72, it can mesh with and drive the rotating gear 73 to rotate, and then drive unidirectional rotation through the connection of the one-way bearing 74 and the meshing gear set 75.

[0082] Therefore, during the sliding process of the pull-out bracket 14, the upper film assembly 5 can be automatically raised and lowered by the lifting drive structure 6 through the drive rack 141. During the raising and lowering process of the upper film assembly 5, the upper film roller 53 can be rotated once by the automatic film changing structure 7, thereby completing the automatic stretching and replacement process of the upper film assembly 5.

[0083] It should be noted that due to the design of the one-way bearing 74, when the positioning rack 72 meshes and drives the rotating gear 73 to rotate in the opposite direction, the one-way bearing 74 will not drive the upper film roller 53 to rotate. When the other upper film roller 53 is subjected to the force of the coil spring, it can control the upper film roller 53 to not rotate, thereby always tightening the upper film body 54, which facilitates the cutting of the upper film body 54.

[0084] like Figure 5 and Figure 6 As shown, in a specific embodiment, the film packaging structure 8 includes a mounting block 81 located at the top inside the device housing 1, a limiting telescopic rod 82 that is provided on the mounting block 81 and moves vertically, a connecting pressure block 84 provided at the end of the limiting telescopic rod 82 for pressing the film connecting the upper film assembly 5 and the film connecting the lower film assembly 3, and a cutting and heat-sealing assembly 85 installed on the connecting pressure block 84 for cutting and heat-sealing the film connecting the upper film assembly 5 and the lower film assembly 3. The limiting telescopic rod 82 is mainly used to limit the vertical movement of the connecting pressure block 84. At this time, a compression spring 83 is provided inside the limiting telescopic rod 82 for continuously driving the limiting telescopic rod 82 to extend under force.

[0085] Specifically, the structure utilizes steam to drive the limiting telescopic rod 82 of the film packaging structure 8 to extend vertically, thereby controlling the heat sealing operation of pressing the film of the upper film assembly 5 and the lower film assembly 3.

[0086] It should be noted that the connecting pressure block 84 is detachably installed at the end of the limiting telescopic rod 82, which facilitates the inspection and maintenance of the overall cutting heat sealing assembly 85.

[0087] Among them, such as Figure 7 As shown, the cutting and heat-sealing assembly 85 includes an inner pressure plate 852 located at the bottom of the connecting pressure block 84, an outer ring pressure plate 853 located outside the inner pressure plate 852, a cutting positioning ring 854 disposed at the bottom outer ends of the inner pressure plate 852 and the outer ring pressure plate 853, an annular cutting blade 855 installed at the bottom of the connecting pressure block 84 to pass through the gap formed between the inner pressure plate 852 and the outer ring pressure plate 853, an annular heat-sealing block 856 disposed on the annular cutting blade 855 for pressing the film for heat sealing, a connecting spring 857 disposed at the bottom of the connecting pressure block 84 for connecting with the inner pressure plate 852, and multiple sets of lifting connecting parts 851 disposed on the connecting pressure block 84 for connecting the inner pressure plate 852 and the outer ring pressure plate 853. The annular heat-sealing block 856 can directly adopt an existing thermally conductive metal structure, wherein:

[0088] A space is formed between the two sets of cutting positioning rings 854 to accommodate the vertical movement of the annular heat-sealing block 856;

[0089] The lifting connector 851 specifically includes a plug-in ring groove 8511 disposed in the connecting pressure block 84, a limiting ring block 8513 that slides vertically in the plug-in ring groove 8511, and a plug-in ring block 8512 that passes through the connecting pressure block 84 for the inner pressure plate 852 or the outer ring pressure plate 853.

[0090] When the equipment is used for high-pressure steam sterilization, the steam pressure should be maintained at 103.95~137.29kPa (1.06~1.40kgf / cm2), the temperature should be raised to 125℃ and maintained for 30 minutes to kill all microorganisms, including heat-resistant bacterial spores, thus achieving the purpose of sterilization.

[0091] Therefore, it should be noted that the lower film body 34 is composed of PE material, and the upper film body 54 is set as two layers of adhesive film material. The upper layer material of the upper film body 54 is set as CPP material, and the lower layer material of the upper film body 54 is also set as PE material. Polyethylene (PE) material has good mechanical properties and chemical stability. Its water vapor transmission rate is between 0.5 and 6.0 mg / (m2·h), and it has good thermal insulation properties (i.e., good temperature resistance, excellent composite properties, high water vapor transmission rate, excellent waterproof performance, and good thermal stability). Therefore, it can avoid the phenomenon of wet packaging of medical devices after medical sterilization packaging. At this time, CPP material can achieve heat sealing effect at 125℃.

[0092] In specific implementation, by setting a cutting and heat-sealing assembly 85 on the connecting pressure block 84, the steam-driven structure 9 controls the connecting pressure block 84 to press down. During this process, the connecting spring 857 contracts, thus controlling the inner pressure plate 852 to work with the outer ring pressure plate 853 to continuously press the upper and lower films after they are joined together. This facilitates the sealing and packaging of reusable medical devices after the film is cut and heat-sealed. At this time, during the pressing down of the connecting pressure block 84, the annular cutting blade 855 drives the annular heat-sealing block 856 to move down. When the annular cutting blade 855 is inserted into the bottom of the blade slot 36 located in the mounting base 31, the annular cutting blade 855 can complete the annular cut of the upper and lower films after they are pressed and stacked. Since the steam hot air flow drives the annular heat-sealing block 856 to be heated, the annular heat-sealing block 856 will work with the CPP material pressing the upper film to achieve the edge sealing and heat-sealing operation of the cut film. Therefore, this structure can improve the heat-sealing packaging efficiency while ensuring the cutting and heat-sealing quality.

[0093] During a high-pressure steam sterilization process, the steam will control the connecting pressure block 84 to rise and fall once through the steam drive structure 9, pressing the upper film body 54 and the lower film body 34 together and using the downward-moving annular cutting blade 855 and the annular heat-sealing pressure block 856 to complete the cutting and heat-sealing operations in one go.

[0094] At this time, as Figure 5 and Figure 8 As shown, the steam drive structure 9 includes a connecting bracket 91 disposed inside the device housing 1, an inclined nozzle 92 mounted above the connecting bracket 91, a steam wheel 93 rotatably disposed above the inclined nozzle 92 for driving the inclined nozzle 92 to rotate during the pure water evaporation process, a rope mounting ring 94 mounted on the steam wheel 93, a high-temperature resistant rope 95 wrapped around the outside of the rope mounting ring 94, a lifting block 96 disposed at the end of the high-temperature resistant rope 95 and sliding vertically within the device housing 1, a multi-section telescopic rod 98 with its two ends respectively hinged to the lifting block 96 and the connecting pressure block 84, and a lever support shaft 97 disposed in the middle of the multi-section telescopic rod 98 and rotatably mounted on the connecting bracket 91 for lever rotation support of the multi-section telescopic rod 98. The high-temperature resistant rope 95 can be an existing aramid fiber rope structure.

[0095] In practice, when high-pressure steam sterilization is performed, the setting of the inclined nozzle 92 can control the rotation of the steam turbine 93 (based on the basic principle of steam turbines in the prior art). This causes the high-temperature resistant rope 95 to be wound on the rope mounting ring 94 through the rotating rope mounting ring 94, which in turn causes the lifting block 96 to move up and down in the vertical direction. At this time, since the middle part of the multi-section telescopic rod 98 rotates on the connecting bracket 91 through the lever support shaft 97, the connecting pressure block 84 will move up and down in the vertical direction through the hinged multi-section telescopic rod 98 during the lifting process of the lifting block 96.

[0096] During the process of the high-temperature resistant rope 95 driving the lifting block 96 to rise and fall, the lifting block 96 is provided with a third limiting sliding member 961 for limiting the vertical movement of the lifting block 96. The third limiting sliding member 961 also adopts the limiting slide groove slider structure disclosed in the prior art.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0098] Furthermore, it should be noted that if any directional indication (such as up, down, left, right, front, back, etc.) is involved in the embodiments of the present invention, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0099] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, in the embodiments of this invention, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

Claims

1. A sterilization and packaging device for medical devices, characterized in that, include: The device housing (1) is used for high-pressure steam sterilization of medical devices. A pull-out bracket (14) for detachable installation of the lower film assembly (3) is slidably installed inside the device housing (1) via a limiting guide rail. The device housing (1) is also provided with an upper film assembly (5) for cooperating with the lower film assembly (3) to package medical devices. The water storage tank (2) is located at the bottom of the device housing (1), and a support base (21) and a heating element (25) for evaporating the internal pure water are provided on the bottom side. The film packaging structure (8) is located above the upper film assembly (5) and is used to press the film connecting the upper film assembly (5) and the film of the lower film assembly (3) together and perform a heat sealing operation. A steam-driven structure (9) is installed inside the device housing (1) and is used to operate the steam-driven film packaging structure (8) to press the film of the upper film assembly (5) and the film of the lower film assembly (3) while the device housing (1) is being sterilized by high pressure steam. The film packaging structure (8) includes a mounting block (81) located at the top inside the device housing (1), a limiting telescopic rod (82) that extends and retracts vertically on the mounting block (81), a connecting pressure block (84) at the end of the limiting telescopic rod (82) for pressing the film connecting the upper film assembly (5) and the film connecting the lower film assembly (3), and a cutting and heat-sealing assembly (85) installed on the connecting pressure block (84) for cutting and heat-sealing the film connecting the upper film assembly (5) and the film connecting the lower film assembly (3). The limiting telescopic rod (82) is provided with a compression spring (83) inside for continuously driving the limiting telescopic rod (82) to extend under force. The cutting and heat-sealing assembly (85) includes an inner pressure plate (852) located at the bottom of the connecting pressure block (84), an outer ring pressure plate (853) located outside the inner pressure plate (852), a cutting positioning ring (854) disposed at the bottom outer ends of the inner pressure plate (852) and the outer ring pressure plate (853), an annular cutting blade (855) installed at the bottom of the connecting pressure block (84) to pass through the gap between the inner pressure plate (852) and the outer ring pressure plate (853), an annular heat-sealing block (856) disposed on the annular cutting blade (855) for pressing the film for heat sealing, a connecting spring (857) disposed at the bottom of the connecting pressure block (84) for connecting with the inner pressure plate (852), and multiple sets of lifting connecting parts (851) disposed on the connecting pressure block (84) for connecting the inner pressure plate (852) and the outer ring pressure plate (853), wherein: A space is formed between the two sets of cutting positioning rings (854) to accommodate the vertical movement of the annular heat-sealing block (856); The lifting connector (851) specifically includes a plug-in ring groove (8511) disposed in the connecting pressure block (84), a limiting ring block (8513) that slides vertically in the plug-in ring groove (8511), and a plug-in ring block (8512) that passes through the connecting pressure block (84) for the inner pressure plate (852) or the outer ring pressure plate (853). The steam drive structure (9) includes a connecting bracket (91) disposed inside the device housing (1), an inclined nozzle (92) mounted above the connecting bracket (91), a steam wheel (93) rotatably disposed above the inclined nozzle (92) for driving the rotation of the inclined nozzle (92) during the pure water evaporation process, a rope mounting ring (94) mounted on the steam wheel (93), a high-temperature resistant rope (95) wrapped around the outside of the rope mounting ring (94), a lifting block (96) disposed at the end of the high-temperature resistant rope (95) and sliding vertically within the device housing (1), a multi-section telescopic rod (98) with its two ends respectively hinged to the lifting block (96) and the connecting pressure block (84), and a lever support shaft (97) disposed in the middle of the multi-section telescopic rod (98) and rotatably mounted on the connecting bracket (91) for lever rotation support of the multi-section telescopic rod (98).

2. The sterilization and packaging equipment for medical devices as described in claim 1, characterized in that, The lower film assembly (3) includes a mounting base (31) detachably mounted on a pull-out bracket (14), two sets of lower film rollers (32) set on the mounting base (31), a first coil spring (33) mounted on the lower film rollers (32), a lower film body (34) wound around the outside of the lower film rollers (32) at both ends, multiple sets of positioning blocks (35) located on the upper surface of the mounting base (31), and a blade slot (36) with an annular structure set on the upper surface of the mounting base (31). The positioning blocks (35) are distributed in an annular shape inside the blade slot (36) for positioning and placing medical devices at the center of the annular shape.

3. The sterilization and packaging equipment for medical devices as described in claim 2, characterized in that, The lower film assembly (3) is also provided with a manual film replacement structure (4) for manual film replacement. The manual film replacement structure (4) includes a ratchet (42) disposed at one end of a set of lower film rollers (32), a pawl (43) located in the mounting base (31) for engaging the ratchet (42), and a hand crank lever (41) disposed on the ratchet (42) and passing through the mounting base (31) to the outside for manually driving the ratchet (42) to rotate.

4. The sterilization and packaging equipment for medical devices as described in claim 1, characterized in that, The upper film assembly (5) includes a film support (51) that slides vertically inside the device housing (1), an upper film roller (53) disposed at both ends of the film support (51), an upper film body (54) that is wound around the outside of the upper film roller (53) at both ends, and a second coil spring (55) mounted on the upper film roller (53).

5. The sterilization and packaging equipment for medical devices as described in claim 4, characterized in that, It also includes a lifting drive structure (6) installed in the device housing (1) and connected to the pull-out bracket (14) for driving the film support (51) to move up and down during the sliding process of the pull-out bracket (14), and an automatic film replacement structure (7) installed in the device housing (1) and connected to the film support (51) for controlling the upper film body (54) to automatically replace the film during the lifting process of the film support (51).

6. The sterilization packaging equipment for medical devices as described in claim 5, characterized in that, The inner side of the pull-out bracket (14) is provided with a drive rack (141) that extends along the sliding direction of the pull-out bracket (14). The lifting drive structure (6) includes a lifting rack (65) mounted on a film support (51) and sliding in the vertical direction, and a drive gear (61) and a connecting gear (63) rotating inside the device housing (1) via a limiting gear shaft (64). The drive gear (61) and the connecting gear (63) are connected by a synchronous pulley (62) that rotates coaxially. The lifting rack (65) and the connecting gear (63) mesh with each other, and the drive gear (61) and the drive rack (141) mesh with each other. During the sliding process of the pull-out bracket (14), the drive rack (141) meshes and drives the drive gear (61) to rotate. The drive gear (61) drives the connecting gear (63) to rotate synchronously through the synchronous belt pulley (62). The connecting gear (63) meshes and drives the lifting rack (65) to lift the film bracket (51).

7. The sterilization and packaging equipment for medical devices as described in claim 5, characterized in that, The automatic film changing structure (7) includes a positioning rack (72) mounted inside the device housing (1) via a rack bracket (71) for vertically passing through the film support (51), a rotating gear (73) rotating inside the film support (51) for meshing with the positioning rack (72), a one-way bearing (74) with an inner bushing connected to the rotating gear (73), and a meshing gear set (75) with one gear connected to the outer bushing of the one-way bearing (74) and another gear coaxially mounted on a set of upper film rollers (53).

Images