Portable surgical instrument sterilization device suitable for field

Abstract

The invention discloses a portable surgical instrument sterilization device suitable for the field, belongs to the technical field of field sterilization devices, and solves the problem that an existing sterilization device is not suitable for field operation due to the fact that the existing sterilization device needs a power supply to supply power. The device comprises a back box and a steam assembly, a sterilization partition plate chamber is arranged in the back box, and a plurality of vent holes are formed in the sterilization partition plate chamber and used for containing surgical instruments; the steam assembly comprises at least one drawing box used for storing a heating bag, each drawing box is arranged on the back box in a sealed drawing mode, and each drawing box is communicated with one water storage tank and one rotary spray head. Water is boiled to form water vapor through heat released by reaction of the heating bag and water, high-temperature sterilization is conducted on surgical instruments through the water vapor, power supply is not needed in the whole process, a large-capacity and large-weight battery is avoided, the load is reduced, meanwhile, the back box is arranged to be convenient to carry, a field worker can directly carry the back box on the back, and the operation is convenient. The walking aid is convenient to walk and suitable for field remote areas.

Description

Technical Field

[0001] The invention relates to the technical field of field sterilization devices, and in particular to a portable surgical instrument sterilization device suitable for field use. Background Art

[0002] Pathogenic microorganisms such as bacteria and viruses are important pathogens that cause diseases. With the increasing efforts to protect wildlife, autopsies of dead animals in the wild have become more frequent. However, since surgical instruments are usually taken back to the laboratory for disinfection after autopsies in the wild, this process may cause unknown pathogens carried on the instruments to be brought directly back to the laboratory, which may pose a threat to the laboratory and captive animals, and there is a certain risk.

[0003] Conventional sterilization devices, such as high-pressure sterilizers, work on the principle of placing items to be sterilized into the pot, heating water with electric heating wires to generate steam, and using a closed space to increase the pressure in the sterilizer to a certain value and maintain it for a period of time to achieve the purpose of sterilization. However, the high-pressure sterilizer must be connected to a power source to heat the water with electricity, and the high-pressure sterilizer is large in size and heavy in weight, making it inconvenient to move and carry, so it is not suitable for field operations. Summary of the invention

[0004] In view of the above problems in the prior art, the present invention provides a portable surgical instrument sterilization device suitable for field use, which solves the problem that the existing sterilization devices are not suitable for field operations due to the need for power supply.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] Provided is a portable surgical instrument sterilization device suitable for outdoor use, comprising a back box and a steam component, wherein a sterilization partition chamber is arranged in the back box, and a plurality of vents are provided on the sterilization partition chamber for placing surgical instruments; the steam component comprises at least one drawer box for storing a heating pack, each drawer box is sealed and drawably arranged on the back box, each drawer box is unidirectionally connected to a water storage tank and a rotating nozzle, the spray angle of the rotating nozzle can be adjusted, the rotating nozzle is fixed inside the back box and located at the bottom center of the sterilization partition chamber; the water storage tank is used for unidirectionally connecting water to the drawer box to contact the heating pack, the heating pack releases heat when it meets water to boil the water to form water vapor, and the water vapor enters the sterilization partition chamber through the rotating nozzle to sterilize the surgical instrument.

[0007] The working principle of this scheme is that when surgery is required, the water in the water tank is unidirectionally conducted to the pull-out box to contact the heating pack. The heating pack releases heat when it meets water to boil the water to form water vapor. The water vapor enters the sterilization partition chamber through the rotating nozzle to sterilize the surgical instruments. Among them, the heat released by the reaction of the heating pack and water is used to boil the water to form water vapor, and the surgical instruments are sterilized at high temperature by water vapor. The whole process does not require power supply, avoiding the need to carry large-capacity and heavy-weight batteries, reducing the weight. At the same time, the setting of the back box is convenient for carrying, and field workers can carry the back box directly on their backs for easy walking. The setting of the pull-out box is convenient for replacing the heating pack, and the unidirectional connection setting of the water tank and the rotating nozzle with the pull-out box avoids the backflow of water vapor. The setting of the rotating nozzle allows water vapor to enter the sterilization partition chamber in the form of multiple airflows, and the water vapor converges into multiple airflows and rotates and sprays out, so that the temperature is more concentrated and the sterilization effect is improved.

[0008] Furthermore, the steam assembly includes two pull-out boxes, two water storage tanks and a rotating nozzle; the two pull-out boxes are respectively sealed and pulled out and arranged on the bottom of the outer end surface of the back box; the two water storage tanks are respectively arranged on both sides of the inside of the back box, and the bottom water outlets of the two water storage tanks are connected to the two pull-out boxes through conduits, and each conduit is provided with a first gas one-way check valve and a water injection valve switch, and the button end of each water injection valve switch is arranged on the back box; the air inlet of the rotating nozzle is respectively connected to one end of the two air pipes, and the other ends of the two air pipes are respectively connected to the air outlets of the two water storage tanks, and each air pipe is provided with a second gas one-way check valve. The setting of the two pull-out boxes and the two water storage tanks can not only be used collectively, but also be used separately, which broadens the applicable scenarios. When field workers need to quickly sterilize multiple surgical instruments, the water of the two water storage tanks is injected into the two pull-out boxes respectively, and the two heating packs in the two pull-out boxes react and release heat at the same time, which can form a large amount of water vapor in a short time, which is convenient for rapid sterilization. When field workers only need to sterilize a small number of surgical instruments, they can use the heating packs in the two drawer boxes respectively, increasing the number of sterilizations and reducing the amount of water and heating packs that need to be carried with them. The first gas one-way check valve and the second gas one-way check valve prevent water vapor from flowing in the two drawer boxes.

[0009] Furthermore, considering that the heating pack in the pull-out box has a low speed and a low amount of water vapor in the initial reaction with water, if a small amount of water vapor at a low speed enters the sterilization partition chamber from the rotary nozzle at the first time, the small amount of water vapor at a low speed, due to its low heat, not only does not have the heat energy to drive the rotary nozzle, but also forms condensed water due to contact with the surgical instrument at the first time, and does not have the ability to sterilize. On the contrary, the presence of condensed water will cause a certain time that is conducive to bacterial growth before a large amount of water vapor is generated. Therefore, a pressure safety valve is provided at the air inlet near the rotary nozzle on both trachea. The pressure safety valve does not serve as a conventional safety valve, but plays a role in pressurizing the pull-out box. The setting of the pressure safety valve will only be quickly and fully opened after the pressure of the water vapor in the pull-out box exceeds the preset threshold pressure, thereby avoiding the situation where the heating pack releases a small amount of water vapor at a low speed in the initial reaction with water. Sterilization is only performed when a large amount of water vapor is accumulated in the exothermic reaction with water. In this way, a large amount of water vapor at high pressure not only has the heat energy to drive the rotary nozzle, but also improves the sterilization effect.

[0010] Furthermore, the rotating nozzle includes a rotating head fixed on the bottom of the backpack through a universal bracket, and the rotating head is respectively connected to a vertical tube and multiple streamlined curved tubes, and the gas outlets of the multiple curved tubes are distributed along the circumference and arranged obliquely upward. The arrangement of the multiple curved tubes allows the water vapor to be divided into multiple strands and sprayed upward in a spiral trajectory, which is conducive to quickly distributing the water vapor in the sterilization partition chamber. The universal bracket can be a flexible bracket, a ball head bracket and a multi-axis bracket. Through the arrangement of the universal bracket, it is convenient to adjust the angle of the rotating nozzle, so that the vertical tube of the rotating nozzle can face the larger surgical instrument, improve the sterilization effect of the larger surgical instrument, and thus facilitate the unification of the sterilization time of the larger surgical instrument and the smaller surgical instrument.

[0011] Furthermore, a storage space is provided in the back box, and the sterilization partition chamber includes a horizontal partition detachably provided in the middle of the storage space, and a plurality of vertical partitions are detachably provided on the horizontal partition, and each vertical partition is provided with a buckle for buckling with a surgical instrument. The surgical instrument is vertically fixed on the vertical partition by the buckle, so that the surgical instrument is prevented from being stacked and the contact area between the surgical instrument and the water vapor is increased.

[0012] Furthermore, a box cover is hingedly provided on the top of the back box, a recovery chamber is provided on the middle part of the bottom surface of the box cover, a condensation plate is provided on the inner top plate of the recovery chamber, and the water outlet on the condensation plate is connected to the two water storage tanks through two return pipes respectively; a pressure relief valve is provided on the bottom plate of the recovery chamber; the box cover includes a closed state and an open state, and the recovery chamber is sealed and connected to the top opening of the accommodating space in the closed state. Considering that the intensity of the exothermic reaction between the heating pack and water is difficult to control, during the intense reaction between the heating pack and water, the pressure of the accommodating space is prone to be too high. If the water vapor is released directly, heat and water are wasted, so the recovery chamber is provided. When the pressure of the accommodating space exceeds the set value, the pressure relief valve will open, and the water vapor will enter the recovery chamber through the pressure relief valve. The recovery chamber not only has the function of reducing the pressure of the accommodating space, but also has the function of recovering water vapor through the internal condensation plate, avoiding the direct discharge of water vapor, increasing the circulation rate of water, and thus reducing the amount of water that needs to be carried extra.

[0013] Furthermore, both reflux pipes are provided with reflux switches, which are fixed on the top of the box cover. The reflux switches are provided to facilitate the control of the circulation of the reflux pipes, provide conditions for field workers to use the condensed water in the recovery chamber, and avoid direct mixing of the condensed water with the water in the storage tank.

[0014] Furthermore, in order to avoid excessive pressure, even if the recovery chamber exists, the pressure cannot be reduced to a safe value. An exhaust hole connected to the recovery chamber is provided on the top plate of the box cover, and an exhaust switch is provided on the exhaust hole. The exhaust hole can exhaust air under high pressure, and it is also convenient for field workers to use the condensed water in the recovery chamber through the exhaust hole.

[0015] Furthermore, the sealing sliding connection of the bottom plate of the recovery chamber is arranged on the side wall of the recovery chamber. The size of the accommodating space can be adjusted by adjusting the height of the bottom plate of the recovery chamber. Generally, the bottom plate of the recovery chamber is in contact with the longest surgical instrument, so that the heat of the steam can be more concentrated by reducing the height of the accommodating space. When only a single surgical instrument needs to be sterilized, the vertical partition can be directly disassembled, and the single surgical instrument only needs to be placed flat on the horizontal partition, and the height of the bottom plate of the recovery chamber is appropriately lowered, so as to facilitate the rapid increase of the pressure in the accommodating space.

[0016] Furthermore, a pressure gauge and a thermometer for detecting the pressure and temperature of the sterilization partition chamber are arranged on the outer end surface of the back box, so that field workers can monitor the pressure and temperature of the sterilization partition chamber.

[0017] The present invention discloses a portable surgical instrument sterilization device suitable for field use, and its beneficial effects are:

[0018] The present invention relies on the heat released by the reaction of the heating pack with water to boil the water to form water vapor, and the surgical instruments are sterilized at high temperature by the water vapor. The entire process does not require power supply, avoids carrying large-capacity and heavy-weight batteries, and reduces the weight. At the same time, the setting of the back box is convenient for carrying. Field workers can carry the back box directly on their backs for easy walking, and can be used in remote areas in the wild. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a portable surgical instrument sterilization device;

[0020] Figure 2 This is a schematic diagram of the interior of a portable surgical instrument sterilization device;

[0021] Figure 3 It is a top view of the rotating sprinkler;

[0022] Figure 4 It is a schematic diagram of the downward movement of the bottom plate of the recovery room;

[0023] Among them: 1. Back box; 11. Pressure gauge; 12. Thermometer; 2. Box cover; 21. Reflux switch; 22. Exhaust hole; 3. Sterilization partition chamber; 31. Horizontal partition; 32. Vertical partition; 33. Buckle; 4. Pull-out box; 41. Air pipe; 42. Second gas one-way check valve; 43. Pressure safety valve; 5. Heating pack; 6. Water storage tank; 61. Conduit; 62. Water injection valve switch; 63. First gas one-way check valve; 7. Rotating nozzle; 71. Rotating head; 72. Vertical pipe; 73. Bend pipe; 8. Recovery chamber; 81. Condensation plate; 82. Reflux pipe; 83. Bottom plate; 84. Pressure relief valve. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0025] refer to Figure 1 , which is a structural diagram of a portable surgical instrument sterilization device, its purpose is to solve the problem that the existing sterilization device is not suitable for field operations due to the need for power supply. It will be shown in detail below.

[0026] refer to Figure 1 and Figure 2 The present embodiment provides a portable surgical instrument sterilization device suitable for field use, comprising a back box 1 and a steam assembly.

[0027] The back box 1 is provided with a storage space, and the sterilization partition chamber 3 includes a horizontal partition 31 which is detachably arranged in the middle of the storage space, and the horizontal partition 31 is placed on a step in the storage space. A plurality of vertical partitions 32 are clamped on the horizontal partition 31, and each vertical partition 32 is provided with a buckle 33 for buckling with surgical instruments. A plurality of ventilation holes are provided on the horizontal partition 31 and each vertical partition 32. The surgical instruments are vertically fixed on the vertical partition 32 by the buckle 33, so as to avoid stacking of the surgical instruments and increase the contact area between the surgical instruments and the water vapor.

[0028] The steam assembly includes two drawer boxes 4 , two water storage tanks 6 and a rotating nozzle 7 .

[0029] The two pull-out boxes 4 are used to place the heating packs 5, and the two pull-out boxes 4 are sealed and pulled out and arranged on the bottom of the outer end face of the back box 1. One end face of the back box 1 on which the shoulder strap is arranged is the inner end face, and the other end face of the back box 1 is the outer end face. The arrangement of the two pull-out boxes 4 and the two water storage tanks 6 can not only be used collectively, but also be used separately, which broadens the applicable scenarios. When field workers need to quickly sterilize multiple surgical instruments, the water in the two water storage tanks 6 is injected into the two pull-out boxes 4 respectively, and the two heating packs 5 in the two pull-out boxes 4 react and release heat at the same time, which can form a large amount of water vapor in a short time, which is convenient for rapid sterilization. When field workers only need to sterilize a small number of surgical instruments, the heating packs 5 in the two pull-out boxes 4 can be used separately, which increases the number of sterilization times and reduces the amount of water and heating packs 5 that need to be carried with them.

[0030] The two water tanks 6 are respectively arranged on both sides of the interior of the back box 1, and the water inlets of the two water tanks 6 are arranged on the top surfaces of the water tanks. The bottom water outlets of the two water tanks 6 are connected with the two pull-out boxes 4 through conduits 61. Each conduit 61 is provided with a first gas one-way check valve 63 and a water injection valve switch 62, and the button end of each water injection valve switch 62 is arranged on the back box 1.

[0031] The spray angle of the rotary nozzle 7 is adjustable and the rotary nozzle 7 is fixed inside the back box 1 and located at the bottom center of the sterilization partition chamber 3; the water storage tank 6 is used to conduct water unidirectionally to the pull-out box 4 to contact the heating pack 5. The heating pack 5 releases heat when it meets water to boil the water to form water vapor. The water vapor enters the sterilization partition chamber 3 through the rotary nozzle 7 to sterilize the surgical instruments.

[0032] As a connecting structure between the rotating spray head 7 and the drawer box 4, the air inlet of the rotating spray head 7 is connected to one end of two air pipes 41 respectively, and the other ends of the two air pipes 41 are connected to the air outlets of the two water storage tanks 6 respectively, and each air pipe 41 is provided with a second gas one-way check valve 42. The first gas one-way check valve 63 and the second gas one-way check valve 42 prevent water vapor from flowing in the two drawer boxes 4.

[0033] As the specific structure of the rotary spray head 7, refer to Figure 2 and Figure 3 The rotating nozzle 7 includes a rotating head 71 fixed on the bottom of the backpack through a universal bracket, and the rotating head 71 is connected to two air pipes 41 through a three-way hose. The rotating head 71 is connected to a vertical pipe 72 and a plurality of streamlined curved pipes 73, respectively. The gas outlets of the plurality of curved pipes 73 are distributed along the circumference and are arranged obliquely upward. The arrangement of the plurality of curved pipes 73 allows the water vapor to be divided into multiple strands and sprayed upward in a spiral trajectory, which is conducive to quickly distributing the water vapor in the sterilization partition chamber 3. The universal bracket can be a flexible bracket, a ball head bracket and a multi-axis bracket. Through the arrangement of the universal bracket, it is convenient to adjust the angle of the rotating nozzle 7, so that the vertical pipe 72 of the rotating nozzle 7 can face the larger surgical instrument, improve the sterilization effect of the larger surgical instrument, and thus facilitate the unification of the sterilization time of the larger surgical instrument and the smaller surgical instrument.

[0034] As a further solution of the present embodiment, considering that the heating pack 5 in the pull-out box 4 has a low formation speed and a low amount of water vapor in the initial reaction with water, if a small amount of water vapor at a low speed enters the sterilization partition chamber 3 from the rotary nozzle 7 at the first time, the small amount of water vapor at a low speed not only does not have the thermal energy to drive the rotary nozzle 7 due to its low heat, but also forms condensed water when it contacts the surgical instrument at the first time, and does not have the ability to sterilize. On the contrary, the presence of condensed water will cause a certain time that is conducive to the growth of bacteria before a large amount of water vapor is generated. Therefore, pressure safety valves 43 are provided at the air inlets of the two air pipes 41 near the rotary nozzle 7. The pressure safety valve 43 does not serve as a conventional safety valve, but plays the role of increasing the pressure of the pull-out box 4. The pressure safety valve 43 is set to open quickly and fully only when the pressure of the water vapor in the pull-out box 4 exceeds the preset threshold pressure, thereby avoiding the situation where the heating pack 5 releases a small amount of water vapor at a low speed in the initial reaction with water. Sterilization is only performed when a large amount of water vapor is accumulated in the exothermic reaction with water. In this way, the high-pressure and large amount of water vapor not only has the heat energy to drive the rotating nozzle 7, but also improves the sterilization effect.

[0035] As a further solution of the present embodiment, considering that the intensity of the exothermic reaction between the heating pack 5 and water is difficult to control, during the period of the intense reaction between the heating pack 5 and water, the pressure of the accommodating space is prone to be too high. If the water vapor is released directly, heat and water are wasted. Therefore, a box cover 2 is hingedly provided on the top of the back box 1, and a recovery chamber 8 is provided on the middle part of the bottom surface of the box cover 2. A condensation plate 81 is provided on the inner top plate of the recovery chamber 8, and the water outlet on the condensation plate 81 is connected to the two water storage tanks 6 respectively through two reflux pipes 82; a pressure relief valve 84 is provided on the bottom plate 83 of the recovery chamber 8; the box cover 2 includes a closed state and an open state, and the recovery chamber 8 is sealed and connected to the top opening of the accommodating space in the closed state. When the pressure of the accommodating space exceeds the set value, the pressure relief valve 84 will open, and water vapor will enter the recovery chamber 8 through the pressure relief valve 84. The recovery chamber 8 not only has the function of reducing the pressure of the accommodating space, but also has the function of recovering water vapor through the internal condensation plate 81, thereby avoiding direct discharge of water vapor, increasing the water circulation rate, and thus reducing the amount of water that needs to be carried extra.

[0036] The two reflux pipes 82 are both provided with reflux switches 21, which are fixed on the top of the box cover 2. The reflux switches 21 are provided to facilitate the control of the circulation of the reflux pipes 82, provide field workers with the conditions for using the condensed water in the recovery chamber 8, and avoid direct mixing of the condensed water with the water in the storage tank.

[0037] In order to avoid excessive pressure, even if the recovery chamber 8 exists, the pressure cannot be reduced to a safe value, and an exhaust hole 22 connected to the recovery chamber 8 is provided on the top plate of the box cover 2, and an exhaust switch is provided on the exhaust hole 22. The exhaust hole 22 can exhaust air under high pressure, and it is also convenient for field workers to use the condensed water in the recovery chamber 8 through the exhaust hole 22.

[0038] As a specific structure of the recovery chamber 8, refer to Figure 2 and Figure 4 The bottom plate 83 of the recovery chamber 8 is sealed and slidably connected to the side wall of the recovery chamber 8. The size of the accommodating space can be adjusted by adjusting the height of the bottom plate 83 of the recovery chamber 8. Generally, the bottom plate 83 of the recovery chamber 8 is in contact with the longest surgical instrument, so that the heat of the steam can be more concentrated by reducing the height of the accommodating space. When only a single surgical instrument needs to be sterilized, the vertical partition 32 can be directly disassembled, and the single surgical instrument can be placed flat on the horizontal partition 31, and the height of the bottom plate 83 of the recovery chamber 8 can be appropriately lowered, so as to facilitate the rapid increase of the pressure in the accommodating space.

[0039] In order to facilitate field workers to monitor the pressure and temperature of the sterilization partition chamber 3, a pressure gauge 11 and a thermometer 12 with detection ends located in the sterilization partition chamber 3 are arranged on the outer end surface of the back box 1, and two water injection valve switches 62 are also arranged on the outer end surface of the back box 1.

[0040] The working principle of this scheme is:

[0041] When surgery is required, the water in the water tank 6 is unidirectionally conducted into the drawer box 4 to contact the heating pack 5. The heating pack 5 releases heat when it meets water to boil the water to form steam. The steam enters the sterilization partition chamber 3 through the rotating nozzle 7 to sterilize the surgical instruments.

[0042] In order to cope with the situation where multiple surgical instruments need to be sterilized quickly, the water from the two water tanks 6 is injected into the two pull-out boxes 4 at the same time. The two heating packs 5 in the two pull-out boxes 4 react and release heat at the same time, which can form a large amount of water vapor in a short time, facilitating rapid sterilization.

[0043] In order to cope with the situation where a single surgical instrument needs to be sterilized quickly, the vertical partition 32 is removed, and the single surgical instrument is placed flat on the horizontal partition 31, and the height of the bottom plate 83 of the recovery chamber 8 is appropriately lowered, thereby facilitating the rapid increase of the pressure in the accommodating space and achieving rapid sterilization.

[0044] After the operation is completed, in order to reduce the growth of bacteria, the condensed water in the recovery chamber 8 can be used to clean the surgical instruments, which is convenient for subsequent surgical disinfection.

[0045] Although the specific implementation of the invention is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A portable surgical instrument sterilization device suitable for field use, characterized in that: It comprises a back box (1) and a steam assembly; a sterilization partition chamber (3) is arranged in the back box (1), and a plurality of vent holes are provided on the sterilization partition chamber (3) for placing surgical instruments; The steam component comprises at least one drawer box (4) for storing a heating pack (5); each drawer box (4) is sealed and drawable and arranged on the back box (1); each drawer box (4) is unidirectionally connected to a water storage tank (6) and a rotating nozzle (7); the spray angle of the rotating nozzle (7) is adjustable; the rotating nozzle (7) is fixed inside the back box (1) and is located at the bottom center of the sterilization partition chamber (3); the water storage tank (6) is used to unidirectionally connect water to the drawer box (4) to contact the heating pack (5); the heating pack (5) releases heat when it meets water to boil the water to form water vapor; the water vapor enters the sterilization partition chamber (3) through the rotating nozzle (7) to sterilize the surgical instrument.

2. The portable surgical instrument sterilization device according to claim 1, characterized in that: The steam component comprises two drawer boxes (4), two water storage tanks (6) and a rotating nozzle (7); the two drawer boxes (4) are respectively arranged on the bottom of the outer end surface of the back box (1) in a sealed manner; Two water storage tanks (6) are respectively arranged on both sides of the interior of the back box (1); the bottom water outlets of the two water storage tanks (6) are connected to the two drawer boxes (4) through a conduit (61); each conduit (61) is provided with a first gas one-way check valve (63) and a water injection valve switch (62); and the button end of each water injection valve switch (62) is arranged on the back box (1); The air inlet of the rotating nozzle (7) is respectively connected to one end of two air pipes (41), and the other ends of the two air pipes (41) are respectively connected to the air outlets of two water storage tanks (6), and each air pipe (41) is provided with a second gas one-way check valve (42).

3. The portable surgical instrument sterilization device according to claim 2, characterized in that: Pressure safety valves (43) are provided on the two air pipes (41) at the air inlets close to the rotating spray heads (7).

4. The portable surgical instrument sterilization device according to claim 1, characterized in that: The rotating spray head (7) comprises a rotating head (71) arranged on the bottom of the backpack via a universal bracket, the rotating head (71) being connected to a vertical pipe (72) and a plurality of streamlined curved pipes (73) respectively, and the air outlets of the plurality of curved pipes (73) are distributed along the circumference and arranged obliquely upward.

5. The portable surgical instrument sterilization device according to claim 2, characterized in that: The back box (1) is provided with a storage space, and the sterilization partition chamber (3) comprises a horizontal partition (31) which is detachably arranged in the middle of the storage space, and a plurality of vertical partitions (32) are detachably arranged on the horizontal partition (31), and each of the vertical partitions (32) is provided with a buckle (33) for buckling with a surgical instrument.

6. The portable surgical instrument sterilization device according to claim 5, characterized in that: The top of the back box (1) is hingedly provided with a box cover (2), the middle part of the bottom surface of the box cover (2) is provided with a recovery chamber (8), the inner top plate of the recovery chamber (8) is provided with a condensation plate (81), the water outlet on the condensation plate (81) is respectively connected with the two water storage tanks (6) through two return pipes (82); the bottom plate (83) of the recovery chamber (8) is provided with a pressure relief valve (84); The box cover (2) includes a closed state and an open state, and the recovery chamber (8) is sealed and connected to the top opening of the accommodating space in the closed state.

7. The portable surgical instrument sterilization device according to claim 6, characterized in that: The two return pipes (82) are each provided with a return switch (21), and the two return switches (21) are fixed on the top of the box cover (2).

8. The portable surgical instrument sterilization device according to claim 7, characterized in that: An exhaust hole (22) communicating with the recovery chamber (8) is provided on the top plate of the box cover (2), and an exhaust switch is provided on the exhaust hole (22).

9. The portable surgical instrument sterilization device according to claim 6, characterized in that: The bottom plate (83) of the recovery chamber (8) is sealingly and slidably connected to the side wall of the recovery chamber (8).

10. The portable surgical instrument sterilization device according to claim 1, characterized in that: A pressure gauge (11) and a thermometer (12) for detecting the pressure and temperature of the sterilization partition chamber (3) are arranged on the outer end surface of the back box (1).

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