Endoscope protective sleeve

Abstract

The invention discloses an endoscope protective sleeve, and belongs to the technical field of medical instruments. The endoscope protective sleeve comprises an inner layer sleeve and an outer layer sleeve, and further comprises a limiting part, the limiting part comprises a protective layer, an upper adhesive tape and a lower adhesive tape, the upper end of the protective layer covers the upper adhesive tape and is attached to the upper adhesive tape, and the lower end of the protective layer covers the lower adhesive tape and is attached to the lower adhesive tape; the elastic modulus of the protective layer material is greater than that of the inner layer sleeve material; when the sealing cavity is inflated, the upper end and the lower end of the inner layer sleeve expand and deform towards one side of the axis of the inner layer sleeve under the pressure of gas and the pulling force effect of the connecting sleeve till the upper sticky paste and the lower sticky paste are exposed out of the upper end and the lower end of the protective layer, and the upper sticky paste and the lower sticky paste are both bonded to the outer wall of the endoscope. According to the endoscope protection sleeve, in the transferring process of the endoscope, all-directional buffering protection can be conducted on the endoscope, and the risk that the endoscope is damaged due to collision and falling in the transferring process can be greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an endoscope protective sleeve. Background Technology

[0002] The incidence of anorectal diseases has been increasing year by year in recent years, and endoscopic examination has become the most direct and accurate diagnostic method for these diseases. After multiple endoscopes (such as gastroscopes, colonoscopes, and bronchoscopes) have completed their daily diagnostic tasks, they need to be transported to the Central Sterile Supply Department (CSSD) for standardized cleaning, disinfection, and sterilization. For example, after the endoscopy center finishes its daily operations, dozens of used endoscopes are placed in a dedicated transport box and delivered to the CSSD by designated personnel. This avoids the confusion or contamination risks caused by scattered handling. During transport, to prevent vibration and collisions, multiple endoscopes are suspended on racks inside the transport box and then covered with inflatable protective sleeves to prevent damage from collisions or drops.

[0003] Currently, existing protective sleeves for endoscope transport have many shortcomings. From a protective performance perspective, while existing sleeves can provide good cushioning against lateral impacts, in the event of an endoscope drop, the smooth, flat outer wall of the endoscope makes it prone to slippage between the endoscope and the sleeve upon axial impact. This slippage prevents the sleeve from effectively dispersing and cushioning the axial impact force, causing the endoscope lens to directly bear a large impact pressure. This results in inadequate all-around protection for the endoscope, increasing the risk of lens breakage during transport due to drops. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems in the prior art and provide an endoscope protective sleeve that can provide all-round cushioning protection for the endoscope during transportation, and can greatly reduce the risk of damage to the endoscope due to collision and drop during transportation.

[0005] This invention provides an endoscope protective sleeve, comprising an inner sleeve and an outer sleeve, both of which are cylindrical and vertically arranged, forming a sealed cavity between the inner and outer sleeves, and further comprising: The limiting part includes a protective layer, an upper adhesive sticker, and a lower adhesive sticker. The upper and lower adhesive stickers are respectively disposed at the upper and lower ends of the inner wall of the inner sleeve. The middle part of the protective layer is fixed to the middle part of the inner wall of the inner sleeve. The two ends of the protective layer cover the upper and lower adhesive stickers respectively. The elastic modulus of the protective layer material is greater than that of the inner sleeve material. A connecting sleeve is disposed within the sealed cavity. One end of the connecting sleeve is connected to the middle of the inner sleeve, and the other end of the connecting sleeve is connected to the inner wall of the outer sleeve. When the sealed cavity is filled with air, under the pressure of the gas and the tension of the connecting sleeve, the upper and lower ends of the inner sleeve expand and deform towards their own axis until the upper and lower adhesive tapes are exposed from the upper and lower ends of the protective layer. At this point, both the upper and lower adhesive tapes are bonded to the outer wall of the endoscope placed inside the inner sleeve.

[0006] Preferably, the outer sleeve is provided with a pressure valve, which is connected to the sealing cavity. During the process of inflating the sealing cavity through the pressure valve, when the air pressure in the sealing cavity reaches a first set value, the upper adhesive tape is completely exposed from the upper end of the protective layer and adheres to the side wall of the endoscope, the lower adhesive tape is completely exposed from the lower end of the protective layer and adheres to the side wall of the endoscope, and the pressure valve is turned off.

[0007] Preferably, the pressure valve includes a valve body and a valve core. The valve body is disposed on an outer sleeve and has a first through hole and a fourth through hole. The first through hole communicates with the sealing cavity. The outer wall of the valve core fits against the inner wall of the first through hole. The valve core has a second through hole and a third through hole. A one-way valve is disposed in the second through hole, and the second through hole is unidirectionally connected to the sealing cavity through the one-way valve. The third through hole communicates with the second through hole. A first spring is disposed outside the valve core and abuts against the valve core. Under the action of the elastic force of the first spring, the inner wall of the first through hole can block the third through hole. When the real-time air pressure of the sealing cavity reaches a first set value, the air pressure drives the valve core to slide to the third through hole and communicate with the atmosphere through the fourth through hole.

[0008] Preferably, the one-way valve includes a connecting block and a plug. The connecting block is disposed in the sealing cavity and connected to the valve core. The connecting block is provided with a vent hole. The sealing cavity is connected to the second through hole through the vent hole. The plug is slidably connected to the second through hole along the axial direction. A second spring is provided outside the plug. The second spring is used to apply an elastic force to the plug towards the side of the sealing cavity to drive the plug to seal the vent hole. The plug is provided with a vent groove. When the air pressure in the second through hole is greater than the air pressure in the sealing cavity, the air pressure drives the plug to move towards the sealing cavity. The second through hole is connected to the sealing cavity through the vent groove and the vent hole.

[0009] Preferably, the valve body is provided with a push pin. During the inflation process in the sealing cavity, the air pressure in the sealing cavity drives the plug, connecting block and valve core to move towards the push pin. When the air pressure in the sealing cavity is greater than the second air pressure value, the second air pressure value is greater than the first air pressure value, and the push pin abuts against the plug. Under the action of the push pin's supporting force, the plug separates from the vent hole, and the second through hole communicates with the sealing cavity through the vent groove and the vent hole.

[0010] Preferably, the cylinder body is provided with a threaded hole, which is arranged parallel to the second through hole. The side wall of the ejector pin is provided with an external thread, and the ejector pin is connected to the threaded hole on the cylinder body through the external thread. Rotating the ejector pin can adjust the distance between the ejector pin and the plug.

[0011] Preferably, a buffer airbag is provided at the bottom end of the inner sleeve hole, and the buffer airbag is in communication with the sealing cavity.

[0012] Preferably, both the upper and lower adhesive labels are applied repeatedly.

[0013] Preferably, the elastic modulus of the connecting sleeve material is greater than that of the inner sleeve material and the outer sleeve material.

[0014] Preferably, the valve body and the outer sleeve are detachably connected.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the endoscope protective sleeve of the present invention, before use, after the endoscope is inserted into the inner sleeve, air is inflated into the sealed cavity between the inner and outer sleeves. As the air pressure inside the sealed sleeve gradually increases, the outer sleeve deforms away from the endoscope, and the inner sleeve deforms towards the endoscope. Under the action of the connecting sleeve, when the inner sleeve deforms towards the endoscope, the deformation amount in the middle of the inner sleeve is less than the deformation amount at the top and bottom ends of the inner sleeve. The upper adhesive tape gradually protrudes from the upper end of the protective layer, and the lower adhesive tape... Gradually emerging from the bottom of the protective layer, until both the upper and lower adhesive tapes are bonded to the outer wall of the endoscope, the entire protective sleeve is more securely fixed to the endoscope. When the endoscope falls to the ground, the entire protective sleeve is first impacted by the ground. Under the adhesive force of the upper and lower adhesive tapes, the movement of the endoscope relative to the protective sleeve along the endoscope's axis is restricted, thus preventing the endoscope lens from being impacted. This provides all-round cushioning protection for the endoscope, greatly reducing the risk of damage to the endoscope due to collisions and drops during transportation.

[0016] By setting a pressure valve, when the air pressure in the sealed cavity reaches the first set value, the upper adhesive tape is fully exposed from the top of the protective layer and adheres to the side wall of the endoscope, and the lower adhesive tape is fully exposed from the bottom of the protective layer and adheres to the side wall of the endoscope. The shut-off valve automatically shuts off, thereby preventing the air pressure in the sealed cavity from being too high, which would cause the inner sleeve to squeeze and damage the endoscope inside. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure in the first working state of the present invention; Figure 2 This is a schematic diagram of the structure of the second working state of the present invention; Figure 3 This is a schematic diagram of the AA surface of the present invention; Figure 4 This is a schematic diagram of the BB surface of the present invention; Figure 5 This is a schematic diagram of the C-plane structure of the present invention; Figure 6 This is a schematic diagram of the pressure valve of the present invention; Figure 7 This is a schematic diagram of the adhesive patch structure in the first working state of the present invention; Figure 8 This is a schematic diagram of the adhesive patch structure in the third working state of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Endoscope; 101. Inner sleeve; 102. Outer sleeve; 103. Sealing cavity; 104. Protective layer; 105. Upper adhesive tape; 106. Lower adhesive tape; 107. Connecting sleeve; 2. Pressure valve; 301. Valve body; 302. Valve core; 303. First through hole; 304. Second through hole; 305. Third through hole; 306. First spring; 307. Fourth through hole; 401. Connecting block; 402. Plug; 403. Vent hole; 404. Second spring; 405. Vent groove; 5. Ejector pin; 6. Buffer airbag. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figures 1-8 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. Words such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “inner,” “outer,” “upper,” “lower,” “far,” “near,” “front,” and “back” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0021] like Figures 1-8As shown, the present invention provides an endoscope protective sleeve, comprising an inner sleeve 101 and an outer sleeve 102, both of which are cylindrical and vertically arranged, forming a sealed cavity 103 between them. It also includes a limiting part and a connecting sleeve 107. The limiting part includes a protective layer 104, an upper adhesive sticker 105, and a lower adhesive sticker 106. The upper adhesive sticker 105 and the lower adhesive sticker 106 are respectively disposed at the upper and lower ends of the inner wall of the inner sleeve 101. The middle part of the protective layer 104 is fixed to the middle part of the inner wall of the inner sleeve 101, and the two ends of the protective layer 104 respectively cover the upper adhesive sticker 105 and the lower adhesive sticker 106, providing protection. The elastic modulus of the material of layer 104 is greater than that of the material of inner sleeve 101; the connecting sleeve 107 is disposed in the sealing cavity 103, one end of the connecting sleeve 107 is connected to the middle of the inner sleeve 101, and the other end of the connecting sleeve 107 is connected to the inner wall of the outer sleeve 102. When the sealing cavity 103 is filled with air, under the pressure of the gas and the tension of the connecting sleeve 107, the upper and lower ends of the inner sleeve 101 expand and deform towards their own axis until the upper adhesive 105 and the lower adhesive 106 are exposed from the upper and lower ends of the protective layer 104. At this time, the upper adhesive 105 and the lower adhesive 106 are both bonded to the outer wall of the endoscope 1 placed in the inner sleeve 101.

[0022] The working principle of the above embodiments is briefly described below: Before use, the sealing cavity 103 is not inflated, and the inner sleeve 101 and outer sleeve 102 are attached together. At this time, the inner sleeve 101 is in a relaxed state. The upper end of the connecting sleeve 107 covers and adheres to the upper adhesive sticker 105 at the upper end of the inner sleeve 101. The lower end of the connecting sleeve 107 covers and adheres to the lower adhesive sticker 106 at the lower end of the inner sleeve 101. Under the protection of the connecting sleeve 107, the upper adhesive sticker 105 is prevented from self-adhesion, and the lower adhesive sticker 106 is prevented from self-adhesion. This prevents the upper adhesive sticker 105 and the lower adhesive sticker 106 from obstructing the insertion of the endoscope 1 into the inner sleeve 101, and also prevents the upper adhesive sticker 105 and the lower adhesive sticker 106 from prematurely failing. After the endoscope 1 is inserted into the inner sleeve 101, air is injected into the sealed cavity 103 between the inner sleeve 101 and the outer sleeve 102, and the air pressure inside the sealed sleeve gradually increases. As the air pressure inside the sealed sleeve gradually increases, the outer sleeve 102 deforms away from the endoscope 1, and the inner sleeve 101 deforms closer to the endoscope 1. Since one end of the connecting sleeve 107 is connected to the middle of the inner sleeve 101, and the other end of the connecting sleeve 107 is connected to the outer sleeve 102, when the inner sleeve 101 deforms closer to the endoscope 1, the deformation of the middle part of the inner sleeve 101 is less than the deformation of the upper and lower ends of the inner sleeve 101, thus making the inner sleeve 101 present a gourd-shaped structure. Moreover, since the elastic modulus of the protective layer 104 material is greater than the elastic modulus of the inner sleeve 101 material, the deformation of the protective layer 104 material is less than the deformation of the inner sleeve 101. This allows the upper adhesive 105 to gradually emerge from the upper end of the protective layer 104, and the lower adhesive 106 to gradually emerge from the lower end of the protective layer 104, until the upper and lower ends of the inner sleeve 101 are attached to the outer wall of the endoscope 1. At this point, both the upper adhesive 105 and the lower adhesive 106 are bonded to the outer wall of the endoscope 1, thus making the entire protective sleeve more securely fixed to the endoscope 1. When the endoscope 1 falls to the ground, the entire protective sleeve is first impacted by the ground. Under the adhesive force of the upper adhesive 105 and the lower adhesive 106, the movement of the endoscope 1 relative to the protective sleeve along the axial direction of the endoscope 1 is restricted, thereby preventing the lens of the endoscope 1 from being impacted and ensuring the safety of the endoscope 1.

[0023] The endoscope protective sleeve of the present invention can provide all-round cushioning protection for the endoscope 1 during transportation, which can greatly reduce the risk of damage to the endoscope 1 due to collision and drop during transportation.

[0024] Based on the above embodiments, excessive air pressure in the sealed cavity 103 is prevented from causing the inner sleeve 101 to squeeze and damage the endoscope 1 inside.

[0025] like Figures 1-3 , Figure 6 and Figure 8As shown, the outer sleeve 102 is provided with a pressure valve 2, which is connected to the sealing cavity 103. During the process of inflating the sealing cavity 103 through the pressure valve 2, when the air pressure in the sealing cavity 103 reaches a first set value, the upper adhesive tape 105 is completely exposed from the upper end of the protective layer 104 and adheres to the side wall of the endoscope 1, and the lower adhesive tape 106 is completely exposed from the lower end of the protective layer 104 and adheres to the side wall of the endoscope 1, and the pressure valve 2 is shut off.

[0026] By setting pressure valve 2, the sealing cavity 103 of the protective sleeve can be inflated using a squeeze-type inflatable balloon. The exhaust port of the squeeze-type inflatable balloon is connected to the pressure valve, and then the squeeze-type inflatable balloon is squeezed to inflate the sealing cavity 103. During this process, the air pressure in the sealing cavity 103 gradually increases. When the air pressure in the sealing cavity 103 reaches the first set value, the upper adhesive tape 105 is completely exposed from the upper end of the protective layer 104 and adheres to the side wall of the endoscope 1, and the lower adhesive tape 106 is completely exposed from the lower end of the protective layer 104 and adheres to the side wall of the endoscope 1. Thus, when the upper adhesive tape 105 and the lower adhesive tape 106 are completely adhered to the side wall of the endoscope 1, the shut-off valve automatically shuts off, thereby preventing the air pressure in the sealing cavity 103 from being too high, which would cause the inner sleeve 101 to squeeze and damage the endoscope 1 inside.

[0027] As a preferred option, such as Figure 3 , Figure 6 and Figure 8As shown, the pressure valve 2 includes a valve body 301 and a valve core 302. The valve body 301 is mounted on the outer sleeve 102. The valve body 301 has a first through hole 303 and a fourth through hole 307. The first through hole 303 communicates with the sealing cavity 103. The outer wall of the valve core 302 is in contact with the inner wall of the first through hole 303. The valve core 302 has a second through hole 304 and a third through hole 305. A one-way valve is provided in the second through hole 304. The second through hole 304 allows a one-way valve to pass through. The valve is unidirectionally connected to the sealing cavity 103. The third through hole 305 is connected to the second through hole 304. The valve core 302 is provided with a first spring 306. The first spring 306 abuts against the valve core 302. Under the action of the elastic force of the first spring 306, the inner wall of the first through hole 303 can block the third through hole 305. When the real-time air pressure of the sealing cavity 103 reaches the first set value, the air pressure drives the valve core 302 to slide to the third through hole 305 and communicate with the atmosphere through the fourth through hole 307. During the inflation of the sealing cavity 103 using a squeeze-type inflatable balloon, the user repeatedly squeezes the balloon by hand. Gas enters the first through-hole 303 of the valve body 301 through the balloon's exhaust port, and then enters the second through-hole 304 within the valve core 302 through the first through-hole 303. At this time, the third through-hole 305 is blocked by the inner wall of the first through-hole 303, increasing the air pressure in the second through-hole 304. This drives the one-way valve to open, allowing gas in the second through-hole 304 to enter the sealing cavity 103 through the one-way valve. As the air pressure in the sealing cavity 103 increases, due to the one-way conduction of the one-way valve, the gas in the sealing cavity 103 cannot flow backwards to the second through-hole 305. Therefore, the gas pressure in the sealing cavity 103 drives the valve core 302 to move towards the first through hole 303, thereby causing the third through hole 305 on the valve core 302 to move towards the fourth through hole 307 on the valve body 301 until the real-time gas pressure in the sealing cavity 103 reaches the first set value. At this time, the third through hole 305 and the fourth through hole 307 are connected. At this time, the second through hole 304 is connected to the atmosphere through the third through hole 305 and the fourth through hole 307. The gas filled into the second through hole 304 by the compression-type inflatable balloon is directly discharged into the atmosphere. Therefore, the gas pressure in the sealing cavity 103 no longer increases, thereby preventing the endoscope 1 from being damaged by excessive gas pressure in the sealing cavity 103.

[0028] As a preferred option, such as Figure 2-Figure 1 and Figure 8As shown, the one-way valve includes a connecting block 401 and a plug 402. The connecting block 401 is located in the sealing cavity 103 and connected to the valve core 302. The connecting block 401 has a vent hole 403. The sealing cavity 103 is connected to the second through hole 304 through the vent hole 403. The plug 402 is slidably connected to the second through hole 304 along the axial direction of the second through hole 304. A second spring 404 is provided outside the plug 402. The second spring 404 is used to apply an elastic force to the plug 402 toward the outside of the sealing cavity 103 to drive the plug 402 to seal the vent hole 403. The plug 402 has a vent groove 405. When the air pressure in the second through hole 304 is greater than the air pressure in the sealing cavity 103, the air pressure drives the plug 402 to move toward the sealing cavity 103. The second through hole 304 is connected to the sealing cavity 103 through the vent groove 405 and the vent hole 403. After gas enters the second through-hole 304 of the valve core 302 through the first through-hole 303, the gas pressure drives the plug 402 of the one-way valve to move away from the valve core 302, causing the plug 402 to separate from the vent hole 403. The plug 402 compresses the second spring 404, and the second through-hole 304 communicates with the sealing cavity 103 through the vent groove 405 and the vent hole 403, thereby opening the one-way valve. Gas enters the sealing cavity 103 through the vent groove 405 and the vent hole 403, thus inflating the sealing cavity 103. When the gas pressure in the sealing cavity 103 increases, the gas pressure drives the connecting block 401 to move towards the first through-hole 303, thereby driving the valve core 302. 02 moves towards the first through hole 303 until the real-time air pressure of the entire sealing cavity 103 reaches the first set value. When the valve core 302 moves to the third through hole 305 on it and connects with the fourth through hole 307 on the valve body 301, the air pressure in the second through hole 304 drops rapidly. Under the action of the elastic force of the second spring 404, the plug 402 seals the vent 403, so that the air pressure in the sealing cavity 103 is sealed in time when it reaches the first set value. This ensures that the air pressure in the sealing cavity 103 is stable while preventing the endoscope 1 from being damaged due to excessive air pressure in the sealing cavity 103, thus ensuring the protective effect of the entire protective sleeve on the endoscope 1.

[0029] As a preferred option, such as Figures 1-3 , Figure 5 , Figure 6 and Figure 8As shown, the valve body 301 is equipped with a push pin 5. During the inflation process in the sealing cavity 103, the air pressure in the sealing cavity 103 drives the plug 402, connecting block 401, and valve core 302 to move closer to the push pin 5. When the air pressure in the sealing cavity 103 is greater than the second air pressure value, the second air pressure value is greater than the first air pressure value, and the push pin 5 abuts against the plug 402. Under the supporting force of the push pin 5, the plug 402 separates from the vent hole 403, and the second through hole 304 communicates with the sealing cavity 103 through the vent groove 405 and the vent hole 403. When the endoscope 1 is transported, if the endoscope 1 falls from the bracket or is violently impacted, the outer sleeve 102 is first subjected to the pressure of compression, which causes the air pressure in the sealing cavity 103 to increase rapidly. At this time, the pressure exerted by the inner sleeve 101 on the endoscope 1 will increase. At this time, the air pressure in the sealing cavity 103 drives the valve core 302 to continue moving towards the side closer to the first through hole 303, thereby driving the plug 402 of the one-way valve to move towards the side closer to the ejector pin 5, until the plug 402 abuts against the ejector pin 5 connected to the valve body 301. Under the supporting force of the ejector pin 5, the plug 402 no longer moves towards the side closer to the first through hole 303, thereby causing the plug 402 to move away from the valve core 302 relative to the valve core 302, causing the plug 402 to separate from the vent hole 403, thereby allowing the sealing cavity 103 to communicate with the atmosphere through the vent hole 403, the vent groove 405, the second through hole 304, the third through hole 305 and the fourth through hole 307. The sealing cavity 103 releases air, which not only reduces the air pressure value in the sealing cavity 103, but also consumes energy to reduce the impact energy received by the endoscope 1, thereby further preventing the endoscope 1 from being damaged in the event of a violent collision.

[0030] As a preferred option, such as Figure 3 , Figure 6 and Figure 8 As shown, the cylinder body has a threaded hole, which is parallel to the second through hole 304. The side wall of the ejector pin 5 has an external thread, and the ejector pin 5 is connected to the threaded hole on the cylinder body through the external thread. Rotating the ejector pin 5 can adjust the distance between the ejector pin 5 and the plug 402. By rotating the ejector pin 5, under the action of the threaded hole on the cylinder body, the distance between the ejector pin 5 and the plug 402 can be adjusted, thereby adjusting the compression of the second spring 404 when the plug 402 contacts the ejector pin 5. This adjusts the maximum air pressure value in the sealing cavity 103 when the endoscope 1 is impacted, so that the air pressure in the sealing cavity 103 can balance the buffering performance of the endoscope 1 when it is impacted and its safety during use.

[0031] As a preferred option, such as Figure 1 and Figure 2As shown, the bottom end of the inner sleeve 101 is provided with a buffer airbag 6, which is connected to the sealing cavity 103. By providing the buffer airbag 6, the endoscope 1 can be buffered when it moves along its own axis during a violent collision, thereby ensuring the protective performance of the entire protective sleeve.

[0032] As a preferred option, such as Figure 1 , Figure 2 and Figure 7 As shown, both the upper adhesive label 105 and the lower adhesive label 106 are reusable. By making the upper adhesive label 105 and the lower adhesive label 106 reusable, the entire protective case can be reused.

[0033] As a preferred option, such as Figure 1 and Figure 2 As shown, the elastic modulus of the connecting sleeve 107 material is greater than that of the inner sleeve 101 material and the outer sleeve 102 material. Setting the elastic modulus of the connecting sleeve 107 material to be greater than that of the inner sleeve 101 material and the outer sleeve 102 material ensures that the deformation of the inner sleeve 101 is greater than that of the connecting sleeve 107 when the sealing cavity 103 is inflated. This ensures that after the sealing cavity 103 is inflated, the structural shape of the inner sleeve 101 meets the design requirements, thereby ensuring the protective function of the entire protective sleeve.

[0034] As a preferred option, such as Figures 1-3 As shown, the valve body 301 is detachably connected to the outer sleeve 102. Making the valve body 301 and the outer sleeve 102 detachably connected facilitates the installation and removal of the valve body 301, thereby simplifying the maintenance of the entire protective sleeve.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. An endoscope protective sleeve, comprising an inner sleeve and an outer sleeve, both the inner and outer sleeves being cylindrical and vertically arranged, forming a sealed cavity between the inner and outer sleeves, characterized in that, Also includes: The limiting part includes a protective layer, an upper adhesive sticker, and a lower adhesive sticker. The upper and lower adhesive stickers are respectively disposed at the upper and lower ends of the inner wall of the inner sleeve. The middle part of the protective layer is fixed to the middle part of the inner wall of the inner sleeve. The two ends of the protective layer cover the upper and lower adhesive stickers respectively. The elastic modulus of the protective layer material is greater than that of the inner sleeve material. A connecting sleeve is disposed within the sealed cavity. One end of the connecting sleeve is connected to the middle of the inner sleeve, and the other end of the connecting sleeve is connected to the inner wall of the outer sleeve. When the sealed cavity is filled with air, under the pressure of the gas and the tension of the connecting sleeve, the upper and lower ends of the inner sleeve expand and deform towards their own axis until the upper and lower adhesive tapes are exposed from the upper and lower ends of the protective layer. At this point, both the upper and lower adhesive tapes are bonded to the outer wall of the endoscope placed inside the inner sleeve.

2. The endoscope protective sleeve as described in claim 1, characterized in that, The outer sleeve is equipped with a pressure valve, which is connected to the sealing cavity. During the process of inflating the sealing cavity through the pressure valve, when the air pressure in the sealing cavity reaches a first set value, the upper adhesive tape is completely exposed from the top of the protective layer and adheres to the side wall of the endoscope, the lower adhesive tape is completely exposed from the bottom of the protective layer and adheres to the side wall of the endoscope, and the pressure valve is shut off.

3. The endoscope protective sleeve as described in claim 2, characterized in that, The pressure valve includes a valve body and a valve core. The valve body is mounted on an outer sleeve and has a first through hole and a fourth through hole. The first through hole communicates with the sealing cavity. The outer wall of the valve core fits against the inner wall of the first through hole. The valve core has a second through hole and a third through hole. A one-way valve is installed in the second through hole, allowing one-way flow from the second through hole to the sealing cavity. The third through hole communicates with the second through hole. A first spring is installed outside the valve core, abutting against the valve core. Under the elastic force of the first spring, the inner wall of the first through hole can block the third through hole. When the real-time air pressure in the sealing cavity reaches a first set value, the air pressure drives the valve core to slide to the third through hole and communicate with the atmosphere through the fourth through hole.

4. The endoscope protective sleeve as described in claim 3, characterized in that, The one-way valve includes a connecting block and a plug. The connecting block is located in the sealing cavity and connected to the valve core. The connecting block has a vent hole. The sealing cavity is connected to the second through hole through the vent hole. The plug is slidably connected to the second through hole along the axial direction. A second spring is provided outside the plug. The second spring is used to apply an elastic force to the plug towards the outside of the sealing cavity to drive the plug to seal the vent hole. The plug has a vent groove. When the air pressure in the second through hole is greater than the air pressure in the sealing cavity, the air pressure drives the plug to move towards the sealing cavity. The second through hole is connected to the sealing cavity through the vent groove and the vent hole.

5. The endoscope protective sleeve as described in claim 4, characterized in that, The valve body is equipped with a push pin. During the inflation process in the sealing cavity, the air pressure in the sealing cavity drives the plug, connecting block and valve core to move towards the push pin. When the air pressure in the sealing cavity is greater than the second air pressure value, the second air pressure value is greater than the first air pressure value. The push pin abuts against the plug. Under the support force of the push pin, the plug separates from the vent hole. The second through hole is connected to the sealing cavity through the vent groove and the vent hole.

6. The endoscope protective sleeve as described in claim 5, characterized in that, The cylinder body is provided with a threaded hole, which is parallel to the second through hole. The side wall of the ejector pin is provided with an external thread, and the ejector pin is connected to the threaded hole on the cylinder body through the external thread. Rotating the ejector pin can adjust the distance between the ejector pin and the plug.

7. The endoscope protective sleeve as described in claim 1, characterized in that, The bottom end of the inner sleeve hole is provided with a buffer airbag, which is connected to the sealing cavity.

8. The endoscope protective sleeve as described in claim 1, characterized in that, Both the upper and lower adhesive stickers are applied repeatedly.

9. The endoscope protective sleeve as described in claim 1, characterized in that, The elastic modulus of the connecting sleeve material is greater than that of the inner sleeve material and the outer sleeve material.

10. The endoscope protective sleeve as described in claim 3, characterized in that, The valve body and the outer sleeve are detachably connected.

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