Expansion disinfection rod

Abstract

The utility model relates to an expansion disinfection rod, which is characterized in that through the arrangement of an air cavity and a liquid cavity in an isolation suite, the expansion function of an instrument is maintained, and disinfectant can be injected into the liquid cavity through a liquid pipe, so that the liquid uniformly permeates to the outer side wall of a contact outer layer through a guide channel and directly acts on the surface of a cavity mucous membrane. Therefore, the instrument does not need to be repeatedly taken out during cleaning and disinfection operation, mechanical friction to a wound in a traditional taking-placing process is fundamentally avoided, the risk of secondary injury is remarkably reduced, and the treatment comfort of a patient is improved. Secondly, due to the arrangement of an air pipe and an air one-way valve, air can be injected into the air cavity to enable the contact outer layer to expand to be attached to the inner wall of the cavity channel, and precise expansion is achieved; the air one-way valve ensures that the pressure in the air cavity is constant, and instrument displacement or excessive tissue compression caused by pressure fluctuation is avoided. According to the structure, the stability of the expansion effect is guaranteed, local stress concentration on the mucous membrane is reduced, and the structure is particularly suitable for supporting fragile tissue after an operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to a dilating and disinfecting rod. BACKGROUND

[0002] In the medical field, dilating rods are designed to be used in a certain cavity of the human body in order to prevent the mucosa of this area from closing due to physiological or pathological reasons. This instrument is particularly suitable for use in the presence of a wound, since in this case there is a higher probability of adhesions occurring in the mucosa.

[0003] However, in practical application, in order to maintain the hygiene of this area and avoid the risk of infection, the medical staff needs to regularly remove this auxiliary instrument and perform the necessary cleaning and disinfection of the inner wall of the cavity, and then reinsert the instrument. If this process is not handled properly, it can cause secondary damage to the wound that already exists, increasing the patient's discomfort and even delaying the recovery process. SUMMARY

[0004] In view of the above technical problems, the utility model provides an improved dilating and disinfecting rod.

[0005] The utility model provides a dilating and disinfecting rod, which comprises:

[0006] A support kit, comprising a support rod and an end cap, the support rod is arranged on the end cap, and the end cap is provided with a liquid hole and an air hole;

[0007] A guide kit, comprising a liquid pipe, an air pipe and an air one-way valve, the liquid pipe is connected to the liquid hole, the air pipe is connected to the air hole, and the air one-way valve is arranged on the air pipe; and

[0008] An isolation kit, comprising a contact outer layer, an isolation inner layer and a plurality of guide channels, the contact outer layer is sleeved on the isolation inner layer, the isolation inner layer is sleeved on the support rod, and the contact outer layer and the isolation inner layer are connected to the end cap respectively, so that the isolation inner layer and the support rod jointly enclose a liquid cavity on the end cap, the contact outer layer and the isolation inner layer jointly enclose an air cavity on the end cap, the liquid cavity is connected to the liquid hole, the air cavity is connected to the air hole, each guide channel is arranged in the air cavity, one end of each guide channel is connected to the liquid cavity, and the other end of each guide channel is connected to the outer side wall of the contact outer layer;

[0009] Among them, the air pipe is used for air entering the air cavity to make the contact outer layer expand; the liquid pipe is used for liquid entering the liquid cavity, so that the liquid flows out to the outside of the contact outer layer through each guide channel.

[0010] Preferably, the support rod comprises a silica gel rod; and / or

[0011] The contact outer layer comprises an outer silica gel sleeve, the isolation inner layer comprises an inner silica gel sleeve, the outer silica gel sleeve is sleeved on the inner silica gel sleeve, the inner silica gel sleeve is sleeved on the support rod, and the outer silica gel sleeve and the inner silica gel sleeve are connected to the end cover.

[0012] Preferably, the guide kit further comprises a liquid one-way valve, and the liquid one-way valve is arranged on the liquid pipe.

[0013] Preferably, the expansion and disinfection rod further comprises a syringe, the syringe comprises a piston cylinder and a piston, the piston is slidingly arranged in the piston cylinder, the piston cylinder is provided with a syringe nozzle, and the syringe nozzle is detachably connected to the liquid one-way valve.

[0014] Preferably, the isolation kit further comprises a central passage, the central passage is arranged in the air cavity, the central axis of the central passage coincides with the central axis of the isolation inner layer and the central axis of the contact outer layer respectively, one end of the central passage is communicated with the liquid cavity, the other end of the central passage is communicated with the outer side wall of the contact outer layer, and the central passage is used for discharging liquid in the liquid cavity to the outside of the contact outer layer.

[0015] Preferably, each guide passage is gradually inclined away from the end cover from the isolation inner layer.

[0016] Preferably, each guide passage is uniformly distributed in a circle around the central axis of the support rod.

[0017] Preferably, the aperture of each guide passage gradually decreases in the direction away from the end cover.

[0018] Preferably, one end of the support rod is connected to the end cover, and the other end of the support rod is provided with a contact dome.

[0019] Preferably, the air one-way valve comprises a valve body, a valve core and a reset spring, the valve body is provided with a valve hole, the valve core penetrates through the valve hole, the reset spring is arranged in the valve body, the reset spring is drivingly connected to the valve core, and the reset spring provides an acting force for driving the valve core to block the valve hole.

[0020] The implementation of the utility model has the following beneficial effects:

[0021] The utility model relates to an expansion and disinfection rod, which is provided with an air cavity and a liquid cavity in an isolation kit, can inject disinfectant into the liquid cavity through a liquid pipe while maintaining the expansion function of the instrument, can make the liquid uniformly penetrate to the outer side wall of the contact outer layer through the guide passage, and can directly act on the mucous membrane surface of the cavity. Therefore, the cleaning and disinfection operation does not need to repeatedly take out the instrument, fundamentally avoids the mechanical friction of the traditional taking-out and placing-in process on the wound, significantly reduces the secondary injury risk, and improves the treatment comfort of the patient.

[0022] Secondly, the trachea and the air one-way valve are arranged, gas can be injected into the air cavity to make the contact outer layer expand to fit the cavity inner wall, and accurate expansion is realized; the air one-way valve ensures that the internal pressure of the air cavity is constant, and displacement of the instrument or excessive compression of the tissue caused by pressure fluctuation is avoided. This structure not only guarantees the stability of the expansion effect, but also reduces the local stress concentration on the mucosa, and is especially suitable for the support demand of fragile tissue after operation.

[0023] In addition, the three-dimensional arrangement design of the guide channel in the air cavity enables the disinfectant to diffuse from the liquid cavity to the outside wall of the contact outer layer through multiple paths, forming a uniform liquid covering layer. Compared with the traditional single-point flushing mode, this structure significantly improves the contact area and penetration efficiency of the disinfectant and the wound surface, effectively inhibits microbial colonization, and reduces the incidence of infection. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the figures, and in which exemplary embodiments of the present application are shown.

[0025] Figure 1 is a structural schematic view of an expansion disinfection rod in some embodiments of the present application;

[0026] Figure 2 is a structural schematic view of an expansion disinfection rod in some embodiments of the present application;

[0027] Figure 3 is a structural schematic view of an expansion disinfection rod in some embodiments of the present application;

[0028] Figure 4 is another internal structure schematic view of an expansion disinfection rod in some embodiments of the present application;

[0029] Figure 5 is Figure 4 is an enlarged view of the expansion disinfection rod shown in A;

[0030] Figure 6 is Figure 4 is an enlarged view of the expansion disinfection rod shown in B. DETAILED DESCRIPTION

[0031] Embodiments of the present application will be described in greater detail below with reference to the accompanying drawings. Although embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to convey the scope of the present application to those skilled in the art.

[0032] It should be understood that, although the terms "first", "second", "third", etc. can be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present application, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] Unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, can be fixed connection, can also be detachable connection or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Figure 1 The expansion disinfection rod 10 in some embodiments of the present application is shown, which comprises a support kit 1, a guide kit 2 and an isolation kit 3, and the guide kit 2 and the isolation kit 3 are respectively arranged on the support kit 1. It can be understood that the support kit 1 provides the basic structural support of the entire expansion disinfection rod, ensuring that the product remains stable and correctly positioned during use. The guide kit 2 is used to guide the flow path of liquid and gas, so that the gas and liquid are introduced into different positions in the isolation kit 3 respectively.

[0036] As shown in Figures 1 to 5 The support kit 1 comprises a support rod 11 and an end cover 12, the support rod 11 is arranged on the end cover 12, and the end cover 12 is provided with a liquid hole 121 and a gas hole 122. The guide kit 2 comprises a liquid pipe 21, a gas pipe 23 and a gas one-way valve 24, the liquid pipe 21 communicates with the liquid hole 121, the gas pipe 23 communicates with the gas hole 122, and the gas one-way valve 24 is arranged on the gas pipe 23.

[0037] The isolation kit 3 comprises a contact outer layer 31, an isolation inner layer 32, and a plurality of guide channels 35. The contact outer layer 31 is sleeved on the isolation inner layer 32, and the isolation inner layer 32 is sleeved on the support rod 11. The contact outer layer 31 and the isolation inner layer 32 are respectively connected to the end cap 12, so that the isolation inner layer 32 and the support rod 11 together enclose the liquid cavity 33 on the end cap 12, and the contact outer layer and the isolation inner layer 32 together enclose the gas cavity 34 on the end cap 12. The liquid cavity 33 communicates with the liquid hole 121, and the gas cavity 34 communicates with the gas hole 122. Each guide channel 35 is arranged in the gas cavity 34, one end of each guide channel 35 communicates with the liquid cavity 33, and the other end of each guide channel 35 communicates with the outer side wall of the contact outer layer 31. The gas pipe 23 supplies gas into the gas cavity 34 to make the contact outer layer 31 expand; the liquid pipe 21 supplies liquid into the liquid cavity 33, so that the liquid flows out to the outside of the contact outer layer 31 through each guide channel 35.

[0038] It can be understood that the support rod 11 provides physical support to ensure that the entire expansion and disinfection rod remains structurally stable and positionally fixed during operation. The end cap 12 not only serves as a mounting base for the support rod 11, but also has a liquid hole 121 and a gas hole 122 for the passage of liquid and gas.

[0039] The liquid pipe 21 is connected to the liquid cavity 33 through the liquid hole 121, and is used to guide disinfectant into the liquid cavity 33. This allows disinfectant to enter the liquid cavity 33 and be evenly distributed to the contact outer layer 31 through the guide channels 35. The gas pipe 23 is connected to the gas cavity 34 through the gas hole 122, and is used to inject gas into the gas cavity 34 to make the contact outer layer 31 expand and adhere to the inner wall of the cavity, achieving precise expansion of the instrument. The gas check valve 24 is arranged on the gas pipe 23, and is used to ensure that gas can only flow into the gas cavity 34 in one direction, preventing backflow and maintaining stable pressure in the gas cavity, thereby ensuring proper expansion and positional fixation of the contact outer layer 31.

[0040] It should be noted that the contact outer layer 31 directly contacts the mucosa of the cavity, serving to protect the isolation inner layer 32 and receiving disinfectant from the liquid cavity 33 through the guide channels 35 to evenly distribute it on the outer side wall of the contact outer layer 31, achieving effective disinfection. The isolation inner layer 32 is sleeved on the support rod 11 and forms a double-layer structure with the contact outer layer 31. The isolation inner layer 32 and the support rod 11 enclose the liquid cavity 33 at the end cap 12, while the contact outer layer 31 and the isolation inner layer 32 enclose the gas cavity 34 at the end cap 12. The guide channels 35 are arranged inside the gas cavity 34, one end of each guide channel 35 communicates with the liquid cavity 33, and the other end of each guide channel 35 communicates with the outer side wall of the contact outer layer 31. These guide channels 35 allow disinfectant to flow from the liquid cavity 33 to the outer side wall of the contact outer layer 31, ensuring that the disinfectant can evenly cover and penetrate the mucosal surface of the cavity.

[0041] Specifically, in some embodiments of the dilating and disinfecting rod, the support rod 11 comprises a silica gel rod.

[0042] It can be understood that the silica gel rod can have a certain bending ability while maintaining a certain rigidity, adapt to different shapes and sizes of cavities, and reduce the pressure and friction on the cavity wall. Silica gel is a material with excellent biocompatibility, which has no irritation to human tissues, reduces discomfort or allergic reactions caused by long-term contact, and improves the safety and comfort of patients.

[0043] Specifically, in some embodiments of the dilating and disinfecting rod, the contact outer layer 31 comprises an outer silica gel sleeve, and the isolation inner layer 32 comprises an inner silica gel sleeve, the outer silica gel sleeve is sleeved on the inner silica gel sleeve, the inner silica gel sleeve is sleeved on the support rod 11, and the outer silica gel sleeve and the inner silica gel sleeve are connected to the end cap 12.

[0044] It can be understood that the outer silica gel sleeve directly contacts the mucosa of the cavity, and its soft texture can provide better fit and reduce damage to the mucosa caused by mechanical friction. In addition, the surface of silica gel is smooth, easy to clean and disinfect, and reduces the risk of infection. The inner silica gel sleeve has good deformability and sealing performance, which can ensure the isolation of the gas cavity and the liquid cavity and prevent gas and liquid mixing.

[0045] As shown in Figure 4 , in some embodiments of the dilating and disinfecting rod, the guide kit 2 further comprises a liquid one-way valve 22, which is arranged on the liquid pipe 21.

[0046] It can be understood that the liquid one-way valve 22 is arranged on the liquid pipe 21 to ensure that the liquid can only flow into the liquid cavity 33 in one direction, preventing backflow or leakage of the liquid. This design ensures that the disinfectant can smoothly enter the liquid cavity and be distributed to each guide channel 35, while avoiding the problem of liquid backflow caused by pressure changes or other factors.

[0047] As shown in Figure 2 , in some embodiments of the dilating and disinfecting rod, the dilating and disinfecting rod further comprises a syringe 4, the syringe 4 comprises a piston cylinder 41 and a piston 42, the piston 42 is slidingly arranged in the piston cylinder 41, the piston cylinder 41 has a syringe nozzle 43, and the syringe nozzle 43 is detachably connected to the liquid one-way valve 22.

[0048] It can be understood that the piston cylinder 41 is used to contain disinfectant or other liquid. The piston 42 is slidingly arranged in the piston cylinder 41, and the suction and discharge of the liquid are controlled by pushing and pulling the piston. The syringe nozzle 43 can be connected with the liquid one-way valve 22, so as to guide the liquid into the liquid one-way valve 22.

[0049] As shown in Figure 2 and Figure 4As shown, in some embodiments of the expanding disinfection rod, the isolation kit 3 also includes a central channel 36, which is disposed in the air cavity 34. The central axis of the central channel 36 coincides with the central axis of the inner isolation layer 32 and the central axis of the outer contact layer 31, respectively. One end of the central channel 36 is connected to the liquid cavity 33, and the other end of the central channel 36 is connected to the outer wall of the outer contact layer 31. The central channel 36 allows the liquid in the liquid cavity 33 to be discharged to the outside of the outer contact layer 31.

[0050] Understandably, the central channel 36 allows the disinfectant to be sprayed directly from the center of the product. In some application scenarios, the central channel 36 allows the disinfectant to be sprayed directly to quickly fill the corresponding area, enabling the product to adapt to and meet various medical needs.

[0051] In some embodiments of the expanded disinfection wand, each guide channel 35 gradually slopes away from the inner isolation layer 32 toward the end cap 12.

[0052] Understandably, each guide channel 35 gradually slopes away from the inner isolation layer 32 towards the end cap 12. This design helps guide the liquid to flow in a specific direction, ensuring that the liquid can form a uniform coating on the outer contact layer 31.

[0053] like Figure 2 As shown, in some embodiments of the expanding disinfection rod, each guide channel 35 is evenly distributed circumferentially around the central axis of the support rod 11.

[0054] Understandably, each guide channel 35 is circumferentially and evenly distributed around the central axis of the support rod 11. This arrangement ensures that the liquid can diffuse evenly from multiple angles to the outer wall of the contact outer layer 31, improving the uniformity of liquid distribution and coverage area, thereby further enhancing the medical disinfection effect.

[0055] In some embodiments of the expanded sterilization wand, the aperture of each guide channel 35 gradually decreases in the direction away from the end cap 12.

[0056] Understandably, the smaller the aperture of the guide channel 35 located closer to the end cap 12, the better. This prevents the liquid from being injected through the end cap 12 and then directly discharged through the adjacent guide channel 35. Instead, the liquid can flow to the guide channel 35 farther from the end cap 12, thus making the liquid discharge flow rate of each guide channel 35 as similar as possible. This further improves the uniform distribution of the disinfectant and enhances the medical disinfection effect of the product.

[0057] like Figure 4 As shown, in some embodiments of the expanding disinfection rod, one end of the support rod 11 is connected to the end cap 12, and the other end of the support rod 11 is provided with a contact dome 111.

[0058] Understandably, the design of the contact dome 111 reduces friction and irritation to the cavity walls, improves patient comfort, and prevents tissue damage.

[0059] like Figure 6 As shown, in some embodiments of the expanding disinfection rod, the gas one-way valve 24 includes a valve body 241, a valve core 242, and a return spring 243. A valve hole 244 is provided in the valve body 241, and the valve core 242 passes through the valve hole 244. The return spring 243 is disposed in the valve body 241 and is drivenly connected to the valve core 242. The return spring 243 provides a force to drive the valve core 242 to block the valve hole 244.

[0060] Understandably, valve body 241 has a valve hole 244 inside.

[0061] Valve core 242: It is inserted into the valve hole 244 and can move within the valve hole to control the flow of gas.

[0062] Return spring 243: It is located inside the valve body 241 and connected to the valve core 242, providing a force to drive the valve core to block the valve hole 244.

[0063] In some embodiments of the sterilization expander, the liquid check valve can be configured to have the same structure as the gas check valve, thereby enabling unidirectional flow of liquid.

[0064] The following are the beneficial effects of implementing this utility model:

[0065] This invention relates to an expansion disinfection stick. Through the arrangement of air and liquid chambers in the isolation kit, it maintains the instrument's expansion function while allowing disinfectant to be injected into the liquid chamber through a liquid tube. The liquid then evenly penetrates the outer wall of the contact layer via a guide channel, directly acting on the mucosal surface of the cavity. This eliminates the need for repeated instrument removal during cleaning and disinfection, fundamentally avoiding the mechanical friction on the wound caused by traditional removal-insertion procedures, significantly reducing the risk of secondary injury, and improving patient comfort.

[0066] Secondly, the trachea and one-way valve allow gas to be injected into the air chamber, causing the outer contact layer to expand and adhere to the inner wall of the chamber, achieving precise expansion. The one-way valve ensures constant pressure inside the air chamber, preventing instrument displacement or excessive tissue compression due to pressure fluctuations. This structure ensures the stability of the expansion effect while reducing local stress concentration on the mucosa, making it particularly suitable for supporting fragile tissues postoperatively.

[0067] Furthermore, the three-dimensional arrangement of the guiding channels within the air chamber allows the disinfectant to diffuse from the liquid chamber to the outer wall of the contact layer via multiple paths, forming a uniform liquid coating. Compared to traditional single-point irrigation methods, this structure significantly increases the contact area and penetration efficiency between the disinfectant and the wound, effectively inhibiting microbial colonization and reducing the incidence of infection.

[0068] The solutions of the present application have been described in detail above with reference to the accompanying drawings. In the above-described embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be seen in the relevant description of other embodiments. It should also be appreciated by those skilled in the art that the actions and modules involved in the description are not necessarily required by the present application. In addition, it can be understood that the steps in the method embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs, and the modules in the device embodiments of the present application can be combined, divided and reduced according to actual needs.

[0069] The above has described various embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications or improvements to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. An expanding disinfection stick, characterized in that, include: The support kit (1) includes a support rod (11) and an end cap (12). The support rod (11) is disposed on the end cap (12). The end cap (12) has a liquid hole (121) and an air hole (122). The guiding kit (2) includes a liquid pipe (21), an air pipe (23), and an air check valve (24). The liquid pipe (21) is connected to the liquid orifice (121), the air pipe (23) is connected to the air orifice (122), and the air check valve (24) is disposed on the air pipe (23). The isolation kit (3) includes an outer contact layer (31), an inner isolation layer (32), and several guide channels (35). The outer contact layer (31) is fitted onto the inner isolation layer (32), and the inner isolation layer (32) is fitted onto the support rod (11). The outer contact layer (31) and the inner isolation layer (32) are respectively connected to the end cap (12), so that the inner isolation layer (32) and the support rod (11) together form a liquid cavity (33) on the end cap (12). The outer contact layer and the inner isolation layer (32) together form an air cavity (34) on the end cap (12). The liquid cavity (33) is connected to the liquid hole (121). The air cavity (34) is connected to the air hole (122). Each of the guide channels (35) is disposed in the air cavity (34). One end of each guide channel (35) is connected to the liquid cavity (33). The other end of each guide channel (35) is connected to the outer wall of the outer contact layer (31). The gas tube (23) supplies gas into the gas chamber (34) to cause the outer contact layer (31) to expand; the liquid tube (21) supplies liquid into the liquid chamber (33), so that the liquid flows out to the outside of the outer contact layer (31) through each of the guide channels (35).

2. The expanding disinfection rod according to claim 1, characterized in that, The support rod (11) includes a silicone rod; and / or The outer contact layer (31) includes an outer silicone sleeve, the inner isolation layer (32) includes an inner silicone sleeve, the outer silicone sleeve is fitted on the inner silicone sleeve, the inner silicone sleeve is fitted on the support rod (11), and the outer silicone sleeve and the inner silicone sleeve are connected to the end cap (12).

3. The expanding disinfection rod according to claim 1, characterized in that, The guide kit (2) also includes a liquid check valve (22), which is disposed on the liquid pipe (21).

4. The expanding disinfection rod according to claim 3, characterized in that, The expanding disinfection rod also includes a syringe (4), which includes a piston cylinder (41) and a piston (42). The piston (42) is slidably disposed inside the piston cylinder (41). The piston cylinder (41) has an injection nozzle (43), which is detachably connected to the liquid check valve (22).

5. The expanding disinfection rod according to claim 1, characterized in that, The isolation kit (3) also includes a central channel (36), which is disposed in the air cavity (34). The central axis of the central channel (36) coincides with the central axis of the inner isolation layer (32) and the central axis of the outer contact layer (31). One end of the central channel (36) is connected to the liquid cavity (33), and the other end of the central channel (36) is connected to the outer wall of the outer contact layer (31). The central channel (36) allows the liquid in the liquid cavity (33) to be discharged to the outside of the outer contact layer (31).

6. The expanding disinfection rod according to claim 1, characterized in that, Each of the guide channels (35) gradually slopes away from the inner insulating layer (32) in a direction away from the end cap (12).

7. The expanding disinfection rod according to claim 1, characterized in that, Each of the guide channels (35) is evenly distributed in a circle around the central axis of the support rod (11).

8. The expanding disinfection rod according to claim 1, characterized in that, The diameter of each of the guide channels (35) gradually decreases in the direction away from the end cap (12).

9. The expanding disinfection rod according to claim 1, characterized in that, One end of the support rod (11) is connected to the end cap (12), and the other end of the support rod (11) is provided with a contact dome (111).

10. The expanding disinfection rod according to claim 1, characterized in that, The gas check valve (24) includes a valve body (241), a valve core (242), and a return spring (243). The valve body (241) has a valve hole (244), the valve core (242) passes through the valve hole (244), and the return spring (243) is disposed in the valve body (241). The return spring (243) is driven and connected to the valve core (242), and the return spring (243) provides a force to drive the valve core (242) to block the valve hole (244).

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