Protective film sleeve for medical flexible lens

Abstract

The utility model discloses a medical flexible lens protection film sleeve which comprises a fixing opening, a flexible film sleeve and a video head protection barrel which are sequentially connected in a sealed mode from the tail end to the head end. The video head protection barrel is sleeved at the end of the video cable head in a matched mode, and video collection of the medical flexible lens is not affected; the membrane sleeve is adaptively sleeved outside the medical flexible lens video cable, so that the bending deformation of the video cable is not influenced; the tail of the membrane sleeve is fixed at the tail of the medical flexible lens through the fixing opening, so that the video head protection barrel and the membrane sleeve are prevented from moving relative to the video cable; when in use, the medical flexible lens is sleeved outside a medical flexible lens video cable, so that the medical flexible lens is prevented from being sterilized after being used, cross infection is avoided, the use efficiency of the medical flexible lens is improved, the cost is low, and the practicability is high.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a protective film cover for a flexible medical endoscope. Background Technology

[0002] Medical endoscopes, including gastroscopes, colonoscopes, bronchoscopes, uroscopes, and cholangioscopes, play a vital role in minimally invasive medical examinations and treatments. Currently, flexible medical endoscopes used in clinical practice must be washed with water, enzyme-washed, dried, and sterilized before reuse. This process not only damages the flexible endoscopes but also significantly reduces their efficiency. Incomplete sterilization can also lead to cross-infection.

[0003] There is currently no mature, low-cost protective sleeve for medical flexible endoscopes that can reduce the frequency of disinfection and sterilization, improve the efficiency of medical flexible endoscope use, and prevent cross-infection. Summary of the Invention

[0004] The purpose of this invention is to provide a protective film cover for medical flexible endoscopes to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a protective film sleeve for a medical flexible endoscope, comprising a fixing port that is sealed and connected sequentially from the tail end to the head end, a flexible film sleeve, and a video head protective barrel.

[0006] The fixing port is cylindrical, with the tail end serving as the insertion port for the flexible endoscope video cable. A fixing mechanism is also provided to temporarily fix the fixing port to the handheld part of the medical endoscope video cable.

[0007] The membrane sleeve is a cylindrical membrane with a wall thickness of less than 0.15 mm, a cross-sectional perimeter of 6-32 mm, and a length of 120-1600 mm.

[0008] The video head protective barrel is designed to match the medical flexible end, with the transparent blind end on the head side forming a video head light-transmitting protective sheet. The light transmittance of the video head light-transmitting protective sheet is greater than 85%.

[0009] The fixing mechanism includes an elastic ring, the inner diameter of which is smaller than the outer diameter of the corresponding flexible medical endoscope in its natural state.

[0010] Alternatively, the fixing mechanism includes a through cylinder that penetrates the side wall of the fixing port, a flexible fixing rod that is movably disposed inside the through cylinder, matching threads on the inner wall of the through cylinder and the outer wall of the fixing rod, the length of the flexible fixing rod being greater than the length of the through cylinder, and the outer diameter of the flexible fixing rod and the inner diameter of the through cylinder being interference-fitted.

[0011] Alternatively, the fixing mechanism includes a fixing block and an elastic ring disposed on the side wall of the fixing port, with the elastic ring partially inserted into the fixing block.

[0012] Alternatively, the fixing mechanism includes a rotating arm disposed on the side wall of the fixing port, the middle part of the rotating arm being fixed to the rotation axis of the side wall of the fixing port, the fixing arm on the head side of the rotating arm extending out of the head side of the fixing port and intersecting the head side extension line of the inner cavity of the fixing port, and the operating arm on the tail side of the rotating arm separating from the outer wall of the fixing port. Pressing the operating arm causes the rotating arm to rotate, causing the fixing arm to move away from the head side extension line of the inner cavity of the fixing port.

[0013] The inner wall of the membrane sleeve is provided with several reinforcing stems along its long axis.

[0014] An operation membrane tube is connected in parallel and isolated to the outside of the membrane sleeve, and an operation inlet is connected to the tail of the operation membrane tube.

[0015] The opening at the head end of the operating membrane tube is flush with the head end of the operating membrane tube, or located at the tail side of the head end of the operating membrane tube.

[0016] The video camera protection barrel includes a one-piece molded barrel-shaped structure, and the material includes polycarbonate, ethylene-tetrafluoroethylene copolymer or optical grade polyester.

[0017] The side wall of the video head protection barrel is provided with several recesses towards the central axis along the long axis.

[0018] Alternatively, the inner wall of the video head protection barrel may be provided with several protrusions.

[0019] The video head protection container includes a container body and a container bottom. The container bottom includes a sealed cylindrical tube and a video head light-transmitting protective sheet located at one end of the cylindrical tube. The inner cavity of the cylindrical tube matches the shape of the container body. The material of the video head light-transmitting protective sheet includes optical glass, polycarbonate, or ethylene-tetrafluoroethylene copolymer.

[0020] Furthermore, it also includes a flexible medical endoscope, wherein the handle portion of the flexible medical endoscope is provided with a handle fixing mechanism, which is adapted to and temporarily fixed to a fixing mechanism at the tail of the fixing port. The video head of the flexible medical endoscope is provided with a video head fixing mechanism, and correspondingly, a barrel fixing mechanism is provided on the inner wall of the video head protective barrel, which is adapted to and temporarily fixed to the video head fixing mechanism.

[0021] Furthermore, it also includes a storage sleeve, with a deformation depression provided on the tail side of the storage sleeve adjacent to the video head protection barrel. The narrow part of the deformation depression is less than the outer diameter of the video head protection barrel, and the inner cavity of the deformation depression allows the video head protection barrel to pass through after expansion. Correspondingly, a connecting fixing part is provided on the storage sleeve at the fixing port, and the fixing port and the connecting fixing part are temporarily connected and fixed.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0023] 1. When using, the ring should be placed over the video cable of the flexible medical endoscope to avoid damage to the endoscope during cleaning and sterilization after use;

[0024] 2. Avoid the time-consuming process of cleaning and sterilizing flexible medical endoscopes after use, and improve the efficiency of flexible medical endoscope use;

[0025] 3. Provide physical isolation for the use of flexible medical endoscopes to avoid cross-infection;

[0026] The storage sleeve allows the membrane sleeve of this product to expand, facilitating the insertion of the flexible medical endoscope. During the intervals between uses of the flexible medical endoscope, the membrane sleeve of this product can be placed in the storage sleeve to prevent contamination and facilitate reuse within a short period of time. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of another embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of another embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the membrane sleeve with reinforcing stem of the present invention;

[0033] Figure 6 This is a schematic diagram of the operating membrane tube structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the two-piece video head protection barrel structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the screen protection bag structure of the present invention;

[0036] Figure 9 This image shows the use of a flexible medical endoscope with its protective sleeve.

[0037] Figure 10 This is a schematic diagram of the storage sleeve structure;

[0038] In the diagram: 1. Fixing port; 11. Flexible lens video cable placement port; 12-1. Elastic ring; 12-2. Through tube; 12-3. Fixing rod; 12-4. Fixing block; 12-5. Elastic ring; 12-61. Fixing arm; 12-62. Operating arm; 12-7. Bayonet; 12-8. Release handle; 2. Membrane sleeve; 21. Reinforcing stem; 22. Operating membrane tube; 22-1. Operating placement port; 3. Video head protection bucket; 31. Video head light-transmitting protective film; 32. Bucket body; 33. Bucket bottom; 34. Tubular tube; 35. Bucket fixing mechanism; 4. Video screen protection bag; 51. Handle fixing mechanism; 52. Video head fixing mechanism; 6. Storage sleeve; 61. Deformation and collapse; 63. Connecting fixing part. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Flexible medical endoscopes play a vital role in the examination of human cavities and minimally invasive surgery. Their structure consists of a long, flexible video cable at the head and a display screen at the tail. After use, the video cable must be strictly sterilized; however, the narrow operating channels of the video cable often lead to incomplete sterilization, potentially resulting in serious cross-infection incidents.

[0041] The medical flexible endoscope protective sleeve of this invention includes a fixed opening 1, a flexible membrane sleeve 2, and a video head protection barrel 3, which are sequentially sealed and connected from the tail end to the head end. The fixed opening 1 is the insertion port for the video cable of the medical flexible endoscope; the tail opening is larger than the cross-section of the video cable, preferably flared to facilitate insertion. The membrane sleeve 2 is an outer sleeve for the video cable; the inner cavity of the membrane sleeve 2 is slightly larger than the cross-section of the video cable, allowing the video cable to be smoothly inserted without excessive excess. The video head protection barrel 3 is a barrel-shaped structure with one blind end, designed to fit the camera mounted on the head end of the video cable, thus protecting the video head of the medical flexible endoscope. The fixed port 1, the flexible membrane sleeve 2, and the video head protective sleeve 3 are sequentially and sealed together to form a sleeve-like structure with a blind end at the head and an open tail. This structure is appropriately placed on the video cable of the flexible medical endoscope, isolating the video cable inserted into the human body cavity from the inner wall of the cavity and preventing cross-infection. At the same time, when reused, there is no need to clean and sterilize the video cable of the flexible medical endoscope, avoiding damage to the video cable during cleaning and sterilization. Furthermore, after use, the flexible medical endoscope can be reused simply by replacing the new sterile protective membrane sleeve, greatly improving the efficiency of the flexible medical endoscope.

[0042] The fixing port 1 is cylindrical, made of a flexible but rigid material, and has a fixed shape. Its tail is the flexible endoscope video cable insertion port 11, preferably flared to facilitate the entry of the video cable head into the fixing port 1, which then sequentially enters the membrane sleeve 2 and finally the video head protection container 3, where it is fixed relative to and fixed. A fixing mechanism is provided on the fixing port 1. After the flexible endoscope video cable enters the appropriate position within the protective membrane sleeve, the fixing mechanism temporarily fixes the fixing port 1 to the handheld side of the video cable, thereby fixing the flexible endoscope protective membrane sleeve and the video cable relative to each other. This prevents displacement of the video head protection container 3 and the video head at the video cable head during operation, which would affect video acquisition. Various specific embodiments of the fixing mechanism are available, which will be described in detail later.

[0043] The membrane sleeve 2 is a cylindrical membrane, including materials such as polyvinyl chloride (PVC), polyvinyl alcohol (PVA), and silicone rubber. The significance of the super-lubricating material lies in reducing frictional resistance during the insertion of the video cable for the flexible medical endoscope, thus facilitating insertion. The inner diameter of the membrane sleeve 2 is larger than the outer diameter of the corresponding flexible medical endoscope video cable, with a difference of less than 1 mm, allowing for easy insertion of the video cable. Simultaneously, it avoids excessive space outside the video cable, preventing it from occupying too much space; especially when used in the respiratory tract, it avoids obstructing the airway and affecting airway ventilation.

[0044] Similarly, the membrane sleeve 2 preferably has a wall thickness of less than 0.15mm. This avoids insufficient strength and easy breakage, and also ensures that the membrane sleeve 2, after being fitted onto the flexible medical endoscope, does not affect the bending and deformation ability of the video cable, thus ensuring the operability of the flexible medical endoscope. The cross-sectional perimeter of the membrane sleeve 2 is 6-32mm, and the length is 120-1600mm. A suitable inner cavity of the membrane sleeve 2 should be selected for different video cables with different outer diameters for different flexible medical endoscopes. The length should meet the needs of different clinical usage scenarios, being greater than the length required for insertion into the body cavity during specific use.

[0045] The video head protective barrel 3 is designed to match the flexible medical endoscope, and is made of a rigid yet elastic material. Its circular cross-section is slightly larger than the video head of the flexible endoscope, allowing it to fit snugly against the video head. The transparent blind end on the head side forms the video head light-transmitting protective film 31. Thicker flexible medical endoscopes require a thicker protective barrel 3. During use, the protective barrel 3 fits snugly against the video head, preventing movement between the protective barrel 3 and the head, and ensuring the light-transmitting protective film 31 remains firmly attached to the front of the video head, guaranteeing reliable and high-quality video acquisition. Furthermore, the light transmittance of the light-transmitting protective film 31 is greater than 85%, with higher transmittance being better; a transmittance greater than 85% already meets most clinical needs.

[0046] Furthermore, such as Figure 1 As shown, the fixing mechanism includes an elastic ring 12-1, the inner diameter of which in its natural state is smaller than the outer diameter of the corresponding flexible medical endoscope. Figure 1 As shown in the left figure, the elastic ring 12-1 can be connected to the fixing port 1. Before the packaging is opened, it is placed outside the membrane sleeve 2. The membrane sleeve 2 is compressed and deformed, but this does not affect the sealing performance of the membrane sleeve 2. At the same time, the elastic ring 12-1 naturally relaxes without affecting its elasticity and service life. Before use, it is flipped over and placed outside the head end of the fixing port 1, so that the membrane sleeve 2 is no longer compressed, allowing the flexible endoscope video cable to be smoothly inserted into the membrane sleeve 2. After the video cable enters the appropriate position of the medical flexible endoscope protective film, the elastic ring 12-1 is flipped over again, so that it loops around the membrane sleeve 2 at the head end of the fixing port 1. The elastic ring 12-1 presses the membrane sleeve 2 against the flexible endoscope video cable, thereby fixing the medical flexible endoscope protective film and the video cable.

[0047] like Figure 1 As shown in the right figure, the elastic ring 12-1 can also be set separately. When the front ring is put around the fixed port 1, after the video cable enters the appropriate position of the medical flexible endoscope protective film sleeve, the elastic ring 12-1 is pushed to the outside of the film sleeve 2 at the head end of the fixed port 1. The elastic ring 12-1 presses the film sleeve 2 against the video cable of the flexible endoscope, thereby fixing the medical flexible endoscope protective film and the video cable.

[0048] like Figure 2 As shown, the fixing mechanism includes a through cylinder 12-2 that penetrates the side wall of the fixing port 1. A flexible fixing rod 12-3 is movably disposed inside the through cylinder 12-2. Matching threads are provided on the inner wall of the through cylinder 12-2 and the outer wall of the fixing rod 12-3. The length of the flexible fixing rod 12-3 is greater than the length of the through cylinder 12-2. The outer diameter of the flexible fixing rod 12-3 and the inner diameter of the through cylinder 12-2 are interference-fitted.

[0049] like Figure 3 As shown, the fixing mechanism includes a fixing block 12-4 and an elastic ring 12-5 disposed on the side wall of the fixing port 1. The elastic ring 12-5 is partially inserted into the fixing block 12-4. As shown, the elastic ring 12-5 can have two shapes: the elastic ring can be directly connected and fixed to the fixing block 12-4, or the elastic ring 12-5 can have an extension portion, which is then connected and fixed to the fixing block 12-4. In use, after the video cable is inserted into the appropriate position of the medical flexible endoscope protective film sleeve, the elastic ring 12-5 can be repeatedly looped and fixed to any part of the flexible endoscope handheld end (such as the display screen, operating port, suspension part, etc.) to fix it, thereby fixing the medical flexible endoscope protective film and the video cable.

[0050] like Figure 4As shown, the fixing mechanism includes a rotating arm disposed on the side wall of the fixing port 1, with the middle part of the rotating arm fixed to the rotation axis of the side wall of the fixing port 1; a fixing arm 12-61 on the head side of the rotating arm extends out from the head side of the fixing port 1 and intersects the head side extension line of the inner cavity of the fixing port 1; an operating arm 12-62 on the tail side of the rotating arm separates from the outer wall of the fixing port 1; pressing the operating arm 12-62 causes the rotating arm to rotate, causing the fixing arm 12-61 to move away from the head side extension line of the inner cavity of the fixing port 1. A compression elastic mechanism, such as a spring, is provided between the operating arm 12-62 and the side wall of the fixing port 1; under the elastic force of the spring's relaxation, the fixing arm 12-61 intersects the head side extension line of the inner cavity of the fixing port 1, and the membrane sleeve 2 is offset at this part. Before use, pressing the operating arm 12-62 causes the fixing arm 12-61 to move away from the head side extension line of the inner cavity of the fixing port 1, so that it no longer occupies the membrane sleeve 2, allowing the video cable to smoothly enter the protective membrane sleeve of the medical flexible endoscope. Once the video cable is positioned appropriately within the protective film sleeve of the flexible medical endoscope, the operating arm 12-62 is released to reset the fixing arm 12-61. The fixing arm 12-61 presses against the outer side of the film sleeve 2 outside the video cable of the flexible endoscope on the fixed port 1 side, thereby fixing the protective film of the flexible medical endoscope to the video cable.

[0051] Furthermore, such as Figure 5 The diagram shows a cross-sectional view of the membrane sleeve 2 with several reinforcing stems 21 arranged along its long axis on the inner wall. The purpose of the reinforcing stems 21 is to provide support between the inner wall of the membrane sleeve 2 and the outer wall of the flexible medical endoscope video cable when the video cable is inserted into the membrane sleeve 2, facilitating the entry of gas into the membrane sleeve 2 or the discharge of gas from the membrane sleeve 2 during insertion.

[0052] Furthermore, such as Figure 6 As shown, an operating membrane tube 22 is connected and isolated in parallel to the outer side of the membrane sleeve 2. The tail of the operating membrane tube 22 is connected to an operating inlet 22-1. The function of the operating membrane tube 22 is to facilitate the insertion of various cable-like operating instruments through it, making it convenient to perform specific operations during flexible endoscopic examinations or treatments, such as: inserting biopsy forceps for scavenging, inserting suction tubes to aspirate secretions, inserting scalpels to cut tumors, inserting hemostatic clips to stop bleeding, etc. When not in use, the operating membrane tube 22 is not open, consisting of only two thin films, occupying very little space in the body cavity. It goes without saying that the wall thickness of the operating membrane tube 22 should be less than 0.15 mm, and a soft medical material, the same material as the membrane sleeve 2, can be used. The operating membrane tube 22 has an operating inlet 22-1 connected to its tail end for easy insertion of cableway-shaped operating instruments. The operating inlet 22-1 is preferably matched with the injection port of a syringe. During inspection, if the video head's light-transmitting protective film 31 is contaminated with mucus, the syringe can be connected through the operating inlet 22-1 to rinse and clean the film with saline solution. The inner diameter of the operating membrane tube 22 is preferably less than 3mm, matching common cableway operating instruments.

[0053] The opening at the head end of the operating membrane tube 22 is flush with the head end of the operating membrane tube 22, so that after the operating instrument is inserted, it just extends out of the end of the flexible lens video head and is just visible, which facilitates the insertion and operation of the instrument; or it is located on the tail side of the head end of the operating membrane tube 22, no more than 20mm away from the opening at the head end of the membrane tube 22, which can achieve the same effect.

[0054] Furthermore, the video head protection barrel 3 includes an integrally molded barrel-shaped structure. The inner cavity of the barrel-shaped structure matches the thickness of the corresponding video head at the end of the flexible medical endoscope video cable, allowing it to be looped around and temporarily fixed to the video head. The integrally molded video head protection barrel 3 is made of materials including polycarbonate (PC), ethylene-tetrafluoroethylene copolymer (ETFE), or optical-grade polyester (PTE), all of which are commonly used medical materials with high light transmittance, ensuring the quality of video capture of the treatment site by the flexible endoscope video cable.

[0055] Furthermore, the side wall of the video head protection barrel 3 is provided with several recesses along its long axis towards the central axis; or, the inner wall of the video head protection barrel 3 is provided with several protrusions. Whether recesses or protrusions, their function is the same: when the video head protection barrel 3 is fitted onto the flexible lens video cable head, the recesses or protrusions can deform and support the outer wall of the video head, strengthening the fixation between the video head protection barrel 3 and the flexible lens video cable head. They also create a gap between the outer wall of the video head and the inner wall of the video head protection barrel 3, providing a gas passage to facilitate the discharge of gas from the video head protection barrel 3 and to facilitate the insertion of the video cable head into the inner end position of the video head protection barrel 3.

[0056] Furthermore, such as Figure 7 As shown, the video head protection bucket 3 includes a bucket body 32 and a bucket bottom 33. The bucket bottom 33 includes a sealed cylindrical tube 34 and a video head light-transmitting protective sheet 31 located at one end of the cylindrical tube 34. The inner cavity of the cylindrical tube 34 matches the shape of the bucket body 32. The material of the video head light-transmitting protective sheet 31 includes optical glass, polycarbonate, or ethylene-tetrafluoroethylene copolymer. The advantage of this split structure is that it does not create gas obstruction during insertion. It should be noted that the head end of the bucket body 32 is slightly tapered to prevent the flexible lens video cable from protruding outside the bucket body 32. When the head end of the flexible lens video cable is held against the tapered part of the head end of the bucket body 32, the cylindrical tube 34 of the bucket bottom 33 is tightly fitted to the front of the bucket body 32, so that the video head light-transmitting protective sheet 31 is tightly attached to the video head at the head end of the video cable. The interface completes the position matching and relative fixation of the video head protection bucket 3 and the video cable video head.

[0057] Furthermore, such as Figure 8 As shown, the protective film sleeve for the medical flexible endoscope also includes a screen protection bag 4, which is connected to the fixing port 1 and covers the display screen area of ​​the medical flexible endoscope. The screen protection bag 4 provides overall protection for the medical flexible endoscope, resulting in better protection and reducing the potential risk of cross-infection due to contact with the display screen.

[0058] Furthermore, the inner wall of the membrane sleeve 2 is coated with a medical lubricant. The medical lubricant reduces friction when the flexible endoscope cable is inserted into the membrane sleeve 2, allowing for smooth insertion. Medical lubricants include paraffin oil, silicone oil, etc. Specific components include one or more of xanthan gum, glycerin, n-alkanes, siloxanes, glycerol, PVP substances, and purified water.

[0059] The present invention also includes a flexible medical endoscope, wherein a handle fixing mechanism 51 is provided at the handle portion of the flexible medical endoscope, and the handle fixing mechanism 51 is adapted to and temporarily fixed to the fixing mechanism at the tail of the fixing port 1. The video head of the flexible medical endoscope is provided with a video head fixing mechanism 52, and correspondingly, a barrel fixing mechanism 35 is provided on the inner wall of the video head protective barrel 3, and the video head fixing mechanism 52 is adapted to and temporarily fixed to the barrel fixing mechanism 35.

[0060] Specifically, such as Figure 9 As shown, the inner cavity of the fixing port 1 matches the shape of the medical flexible endoscope handle. The handle fixing mechanism 51 is set as a protrusion smaller than the bayonet 12-7, forming the handle fixing mechanism 51. Correspondingly, the tail of the fixing port 1 is provided with a matching bayonet 12-7, forming the fixing mechanism at the tail of the fixing port 1. Slits with a length exceeding the position of the bayonet 12-7 are provided on both sides of the bayonet 12-7. When the medical flexible endoscope handle is engaged in the fixing port 1, the part between the two slits elastically lifts up, raising the position of the bayonet 12-7. When the bayonet 12-7 corresponds to the handle fixing mechanism 51 formed by the protrusion, the elastically lifted part returns to its original position, so that the bayonet 12-7 is engaged outside the protrusion, that is, outside the handle fixing mechanism 51, thus fixing the fixing port 1 and the medical flexible endoscope handle. A raised release handle 12-8 is provided at the free end between the two slits. When it is necessary to detach the medical flexible endoscope from the fixed port 1, the release handle 12-8 can be moved to lift the latch 12-7, thereby removing the latch 12-7 from the handle fixing mechanism 51 formed by the protrusion, and then removing the fixed port 1 from the medical flexible endoscope handle.

[0061] Furthermore, the present invention also includes a storage sleeve 6, such as Figure 10 As shown, a deformation depression 61 is provided on the tail side of the storage sleeve corresponding to the membrane sleeve 2 adjacent to the video head protection barrel 3. The distance between the narrow part of the deformation depression 61 and the outer diameter of the video head protection barrel 3 is smaller. After the deformation depression 61 expands, the inner cavity allows the video head protection barrel 3 to pass through. Correspondingly, a connecting fixing part 62 is provided on the storage sleeve 6 corresponding to the fixing port 1. The fixing port 1 and the connecting fixing part 62 are temporarily connected and fixed.

[0062] Specifically, the sleeve 6 is the outer packaging of the protective film sleeve for the medical flexible endoscope, and it also has a cap to seal the inner cavity of the sleeve 6, ensuring its sterile supply. The sleeve 6 is made of an elastic material with a certain strength. Through the expansion of the deformation depression 61, the video head protective barrel 3 is inserted into the head space of the sleeve 6, extending beyond the deformation depression 61. After insertion, the deformation depression 61 elastically resets, restoring the narrow cavity state. The corresponding part of the film sleeve 2 is compressed and accommodated in the deformation depression 61, while the cross-section of the video head protective barrel 3 is larger than the narrow cavity of the deformation depression 61 and is relatively fixed in the inner cavity of the sleeve 6 on the head side of the deformation depression 61. In this way, under the combined action of the connecting fixing part 62 and the fixing opening 1, the film sleeve 2 is prevented from curling to a certain extent, keeping its inner cavity relaxed, which facilitates the insertion of the flexible endoscope video cable. When the protective sheath of the flexible bronchoscope needs to be removed, apply pressure to the convex side wall of the deformed depression 61 (in the direction of the two arrows in the diagram) to expand its inner cavity beyond the cross-section of the video head protection barrel 3, allowing the video head protection barrel 3 to pass through. In certain scenarios, such as lung transplantation surgery, multiple bronchoscope examinations of the patient's trachea and bronchi are required. During breaks in use, the bronchoscope with the protective sheath can be inserted into the sleeve 6 and fixed relatively to prevent the protective sheath from being contaminated by the external medical environment during breaks in use.

[0063] Meanwhile, most clinical anesthesiology departments suffer from a severe shortage of bronchoscopes. During lung surgery requiring lung isolation, the actual usage time is very short, only 3-5 minutes, but it's difficult to sterilize them in time for use by multiple patients. Some hospitals, when urgently needed, simply wipe them with disinfectant and reuse them for other patients, creating a risk of cross-infection. With the aforementioned sleeve 6, after use, the bronchoscope covered with the medical flexible endoscope protective film can be reinserted into sleeve 6, the bronchoscope removed, and the medical flexible endoscope protective film stored inside sleeve 6, allowing the bronchoscope to be used by other patients. Closing the sleeve ensures the medical flexible endoscope protective film is not contaminated by the external environment. When the bronchoscope needs to be used again during the patient's surgery, it is retrieved, the medical flexible endoscope protective film stored in sleeve 6 is reinserted, and it can be used again. In this way, one bronchoscope can be used by multiple patients simultaneously, avoiding cross-infection.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0065] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective film sleeve for medical flexible endoscopes, characterized by: It includes a fixed port (1) that is sealed and connected from the tail to the head, a flexible membrane sleeve (2), and a video head protective barrel (3); The fixing port (1) is cylindrical, with the end being the flexible endoscope video cable insertion port (11) and a fixing mechanism is provided. The fixing mechanism temporarily fixes the fixing port (1) to the handheld part outside the medical endoscope video cable. The membrane sleeve (2) is a cylindrical membrane with a wall thickness of less than 0.15 mm, a cross-sectional perimeter of 6-32 mm, and a length of 120-1600 mm; The video head protection barrel (3) is set to be barrel-shaped to match the medical flexible end, and the transparent blind end on the head side forms a video head light-transmitting protection sheet (31), which has a light transmittance of more than 85%.

2. The medical flexible endoscope protective film sleeve according to claim 1, characterized in that: The fixing mechanism includes an elastic ring (12-1), and the inner diameter of the elastic ring (12-1) in its natural state is smaller than the outer diameter of the corresponding medical flexible endoscope; Alternatively, the fixing mechanism includes a through cylinder (12-2) that penetrates the side wall of the fixing port (1), a flexible fixing rod (12-3) that is movably disposed inside the through cylinder (12-2), matching threads being provided on the inner wall of the through cylinder (12-2) and the outer wall of the fixing rod (12-3), the length of the flexible fixing rod (12-3) being greater than the length of the through cylinder (12-2), and the outer diameter of the flexible fixing rod (12-3) and the inner diameter of the through cylinder (12-2) being interference-fitted; Alternatively, the fixing mechanism includes a fixing block (12-4) and an elastic ring (12-5) disposed on the side wall of the fixing port (1), wherein the elastic ring (12-5) is partially inserted into the fixing block (12-4); Alternatively, the fixing mechanism includes a rotating arm disposed on the side wall of the fixing port (1), the middle part of the rotating arm being fixed to the rotation axis of the side wall of the fixing port (1); the fixing arm (12-61) on the head side of the rotating arm extends out of the head side of the fixing port (1) and intersects the head side extension line of the inner cavity of the fixing port (1); the operating arm (12-62) on the tail side of the rotating arm is separated from the outer wall of the fixing port (1); pressing the operating arm (12-62) causes the rotating arm to rotate, causing the fixing arm (12-61) to leave the head side extension line of the inner cavity of the fixing port (1).

3. The medical flexible endoscope protective film sleeve according to claim 1, characterized in that: The inner wall of the membrane sleeve (2) is provided with several reinforcing stems (21) along the long axis.

4. The medical flexible endoscope protective film sleeve according to claim 1, characterized in that: The operating membrane tube (22) is connected in parallel to the outside of the membrane sleeve (2) and is isolated. The operating inlet (22-1) is connected to the tail of the operating membrane tube (22).

5. The medical flexible endoscope protective film sleeve according to claim 4, characterized in that: The opening at the head end of the operating membrane tube (22) is flush with the head end of the operating membrane tube (22) or located at the tail side of the head end of the operating membrane tube (22).

6. The medical flexible endoscope protective film sleeve according to claim 1, characterized in that: The video head protection barrel (3) includes an integrally molded barrel-shaped structure, and the material includes polycarbonate, ethylene-tetrafluoroethylene copolymer or optical grade polyester.

7. The medical flexible endoscope protective film sleeve according to claim 1, characterized in that: The video head protection barrel (3) has several recesses along its long axis toward the central axis on the side wall of the barrel. Alternatively, the inner wall of the video head protection barrel (3) may be provided with several protrusions.

8. The medical flexible endoscope protective film sleeve according to claim 1, characterized in that: The video head protection barrel (3) includes a barrel body (32) and a barrel bottom (33). The barrel bottom (33) includes a sealed cylindrical tube (34) and a video head light-transmitting protective sheet (31) located at one end of the cylindrical tube (34). The inner cavity of the cylindrical tube (34) matches the shape of the barrel body (32). The material of the video head light-transmitting protective sheet (31) is optical glass, polycarbonate, or ethylene-tetrafluoroethylene copolymer.

9. The medical flexible endoscope protective film sleeve according to claim 1, characterized in that: It also includes a flexible medical endoscope, wherein the handle of the flexible medical endoscope is provided with a handle fixing mechanism (51), and the handle fixing mechanism (51) is adapted to and temporarily fixed to the fixing mechanism at the tail of the fixing port (1); the video head of the flexible medical endoscope is provided with a video head fixing mechanism (52), and correspondingly, the inner wall of the video head protective barrel (3) is provided with a barrel fixing mechanism (35), and the video head fixing mechanism (52) is adapted to and temporarily fixed to the barrel fixing mechanism (35).

10. The medical flexible endoscope protective film sleeve according to claim 1, characterized in that: It also includes a storage sleeve (6), and a deformation depression (61) is provided on the tail side of the membrane sleeve (2) adjacent to the video head protection barrel (3). The distance of the narrow part of the deformation depression (61) is less than the outer diameter of the video head protection barrel (3). After the deformation depression (61) expands, the inner cavity allows the video head protection barrel (3) to pass through. Correspondingly, a connecting fixing part (63) is provided at the fixed opening (1) of the storage sleeve (6), and the fixed opening (1) and the connecting fixing part (63) are temporarily connected and fixed.

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