3D electronic laparoscope sheath and forming method thereof

Abstract

The invention discloses a 3D (three-dimensional) electronic laparoscope sheath and a forming method thereof, and the 3D electronic laparoscope sheath comprises a lens which is formed by combining an endoscope and a stacked film layer; and the sheath head is used for separating the lens from the tail end of the mirror. Forming a sheath tube protection structure based on a mirror structure; a coating film is overlaid at the tail end of the mirror to protect the imaging effect; based on the film coating structure, a sheath head is added into the sheath tube to form a mirror lens protection structure; and analyzing the stress state among the sheath tube, the sheath head and the mirror to confirm the combination condition. Through a reasonable process mode, a stable mirror sheath sleeve structure is formed, the function of protecting the mirror is achieved, the visual field of a doctor is clear, and meanwhile the reuse efficiency and the overall sanitary effect of the electronic peritoneal mirror are improved.

Description

[0001] The invention relates to the field of medical equipment, in particular to a 3D electronic laparoscope sheath and a forming method thereof. Background Art

[0002] The current 3D / 4K / 8K / fluorescence electronic laparoscope is generally a hard mirror. The mirror is an optical hard tube composed of a lens [light source + lens eye], a mirror tube, a control button handle, and a handle connecting cable. The lens is installed at the front end of the mirror tube, and the rear end of the mirror tube is inserted into the front end of the control button handle. The rear end of the control button is connected to the cable, and the cable is connected to the 3D electronic laparoscope system. The light intensity or the bending direction of the lens can be controlled by the handle according to the needs.

[0003] The 2D laparoscopes in hospital operating rooms are gradually being upgraded to 3D / 4K / 8K / fluorescence and other electronic laparoscopes. The demand and usage rate of electronic laparoscopes are increasing, and the internal functions of electronic laparoscopes are becoming more complex and costly. Currently, hospitals widely establish endoscope cleaning centers to clean and disinfect electronic laparoscopes for repeated use, but this also reduces the utilization rate of the equipment and affects the duration of surgical operations.

[0004] The electronic laparoscopic mirror is not thoroughly cleaned and disinfected. Repeated cleaning of the mirror will cause the mirror to bend and the lens to wear. If the wear of the lens affects the imaging effect, it will need to be purchased again, which will greatly increase the use and maintenance costs and loss rate of the mirror.

[0005] Whether it is a 3D / 4K / 8K / fluorescent electronic laparoscope or a traditional 2D laparoscope, fogging may occur during surgery. Fogging may cause the surgical field to be blurred, which seriously affects the surgeon's surgery and causes a certain degree of interference and misjudgment to the surgery. Currently, hospitals have adopted measures such as cooling and keeping the patient warm, and keeping the mirror warm before or during surgery. However, the phenomenon of fogging still exists. Fogging may cause the surgical field to be blurred, which seriously affects the surgeon's surgery and causes a certain degree of interference and misjudgment to the surgery, which may easily lead to surgical risks for patients.

[0006] Conventional laparoscopic mirrors are inserted into a plastic sterile bag for reusability before being used on patients. Plastic sterile bags are generally made of plastic films with a thickness of less than 0.10 mm. Plastic films are too thin and easily damaged by friction in the human body, causing intraoperative infection and medical accidents. In addition, they cannot meet optical performance requirements. The imaging clarity of the electronic laparoscopic mirror is affected after it is put on, leading to the risk of surgical failure.

[0007] Therefore, there is an urgent need to propose a new type of electronic laparoscope sheath with an anti-fogging function to provide the surgeon with a clear operative field, while also improving the reuse efficiency and overall hygiene effect of the electronic laparoscope. Summary of the invention

[0008] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0009] In view of the above-mentioned and / or existing problems in the prior art that the imaging clarity of the electronic laparoscope is affected by multiple factors after the mirror is put on, and the operation and maintenance cost is too high, the present invention is proposed.

[0010] Therefore, the technical problem to be solved by the present invention is to improve the use efficiency by assisting the imaging of the entire mirror, and the imaging auxiliary tool has a convenient operation and maintenance method.

[0011] In order to solve the above technical problems, the present invention provides the following technical solutions: a 3D electronic laparoscope sheath, comprising a lens, which is composed of an endoscope and a laminated film layer;

[0012] A sheath head separates the lens from the end of the mirror.

[0013] As a preferred solution of the 3D electronic laparoscope sheath described in the present invention, the film layer includes an anti-fogging film, an anti-scratch film, an anti-reflection film, and an anti-reflection film.

[0014] As a preferred solution of the 3D electronic laparoscope sheath of the present invention, wherein: a limiting step and a docking step are provided in the sheath head;

[0015] The limiting step is glued to the lens through the first step and contacts the end of the mirror through the second step;

[0016] The sheath head is fixedly connected to the sheath tube via a docking step.

[0017] As a preferred solution of the 3D electronic laparoscope sheath of the present invention, wherein: a base is provided at one end of the sheath tube;

[0018] The sheath tube is connected to the base by means of a locking piece and a mortise and tenon joint;

[0019] The control base is covered with a sterile sleeve fixedly connected to the sheath tube.

[0020] As a preferred solution of the 3D electronic laparoscope sheath described in the present invention, one end of the sheath head and the lens inside are both at an angle of 0° or 30° relative to the horizontal direction of the sheath tube.

[0021] The beneficial effects of the present invention are as follows: a more effective imaging effect is formed by stacked lenses, and overall protection of the mirror is formed by structures such as a sheath head and a sheath tube.

[0022] Given that the overall structural molding conditions of the mirror sheath are uncertain.

[0023] Therefore, the technical problem to be solved by the present invention is to confirm the molding conditions of the important imaging components of the mirror sheath through experimental analysis.

[0024] In order to solve the above technical problems, the present invention also provides the following technical solutions: a method for forming a 3D electronic laparoscope sheath, comprising the 3D electronic laparoscope sheath, and forming a sheath protection structure based on a mirror structure;

[0025] Superimpose a coating on the end of the mirror to protect the imaging effect;

[0026] Based on the coating structure, a sheath head is added to the end of the sheath tube to form a mirror lens protection structure;

[0027] Analyze the stress state between the sheath tube, sheath head and mirror to confirm the connection conditions.

[0028] As a preferred solution of the method for forming a 3D electronic laparoscope sheath according to the present invention, the sheath is placed on the periphery of the laparoscope;

[0029] The sheath head is placed inside the sheath tube and in front of the end of the mirror;

[0030] The lens and the end of the mirror are kept parallel and at the same angle;

[0031] The lens is made of anodized aluminum, and there is a step inside the sheath head to separate the end of the mirror and the lens and fix them together.

[0032] As a preferred solution of the method for forming a 3D electronic laparoscope sheath of the present invention, wherein: the lens is subjected to a vacuum coating process to form a superimposed coating state, and the film layers are symmetrically or asymmetrically placed on both sides of the endoscope;

[0033] Antireflection film composed of inorganic and organic materials;

[0034] Anti-reflective coatings consisting of metal and polymer thin film coatings;

[0035] Anti-scratch film with sol component and adjusting solvent composition;

[0036] Anti-fogging film composed of organic resin, nano coating and silane compounds.

[0037] As a preferred solution of the method for forming a 3D electronic laparoscope sheath according to the present invention, the sheath head and the lens, the sheath tube and the sheath head, the sheath tube and the base are fixedly connected by adhesive sealing or high-frequency welding; wherein,

[0038] The minimum pressure resistance of the joint point is 120mmHg, and the hydrostatic pressure value is 120cmH 2 O floats upward;

[0039] The tensile strength between the sheath and the lens is more than 30N;

[0040] The tensile strength between the sheath head and the sheath tube is above 15N;

[0041] The tensile strength between the sheath and the base is above 19N.

[0042] As a preferred solution of the method for forming a 3D electronic laparoscope sheath of the present invention, if adhesive sealing is used, secondary 100% penetration curing is required for bonding;

[0043] If high-frequency welding is used, the welding time must be between 3s and 3.5s, the welding power frequency must not be less than 15KHz, and the power must be 1800w.

[0044] As a preferred solution of the method for forming a 3D electronic laparoscope sheath described in the present invention, the gap between the inner diameter of the sheath and the outer diameter of the mirror should be in the range of 0.05 mm to 0.12 mm.

[0045] As a preferred solution of the method for forming a 3D electronic laparoscope sheath according to the present invention, when the locking member is pushed back, the base and the mirror handle are locked to be fixed and not loose;

[0046] When the locking piece is pushed forward, the locking state of the base and the mirror handle is released, and the 3D electronic laparoscope sheath is removed.

[0047] Based on the complete effect and technical content of this solution, a preferred solution of a method for stopping loss using an optical hard tube is formed, wherein: a closed space is formed at the end of the optical hard tube lens;

[0048] An imaging layer made of aluminum oxide is arranged in the closed space

[0049] The beneficial effects of the present invention are as follows: through a reasonable process, a stable scope sheath structure is formed, which has the function of protecting the scope so that the doctor's field of vision is clear, and at the same time, the reuse efficiency of the electronic laparoscope and the overall hygienic effect are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0051] Figure 1 A schematic structural diagram of the main components of a 3D electronic laparoscope sheath according to an embodiment of the present invention;

[0052] Figure 2 A schematic diagram of the lens structure of a 3D electronic laparoscope sheath according to an embodiment of the present invention;

[0053] Figure 3 A schematic diagram of the internal structure of a sheath head of a 3D electronic laparoscope sheath according to an embodiment of the present invention;

[0054] Figure 4 A schematic diagram of the sheath tube and base structure of a 3D electronic laparoscope sheath according to an embodiment of the present invention;

[0055] Figure 5 A schematic diagram of the overall structure of a 3D electronic laparoscope sheath according to an embodiment of the present invention;

[0056] Figure 6 A schematic diagram of the overall structure of a 3D electronic laparoscope sheath according to an embodiment of the present invention;

[0057] Figure 7 A schematic diagram of the overall structure of a 3D electronic laparoscope sheath according to an embodiment of the present invention;

[0058] Figure 8 A flowchart for confirming a combination method of a 3D electronic laparoscope sheath according to an embodiment of the present invention. DETAILED DESCRIPTION

[0059] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0060] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0061] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0062] Furthermore, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0063] Example 1

[0064] Reference Figure 1 , this embodiment provides a 3D electronic laparoscope sheath, including a lens 100, which is composed of an endoscope 100a and a stacked film layer 100b;

[0065] The sheath head 200 separates the lens 100 from the end of the mirror.

[0066] When the 3D electronic laparoscopic surgery or use is performed, the image is clear and there is no fogging. The 3D electronic laparoscope can be inserted into the sheath, so that the 3D electronic laparoscope can be reused without disinfection and will not affect the photography and imaging functions of the 3D electronic laparoscope, thereby protecting the 3D electronic laparoscope and reducing the damage to the mirror caused by cleaning and disinfection.

[0067] Through single or multi-layer coating process on the inner and outer layers of optical lenses, imaging assistance is provided to reduce the workload of surgeons.

[0068] Combining the characteristics of these two sheaths, a complete laparoscope protection structure is formed;

[0069] The sheath head 200 serves as the main protective component for the optical lens, and is also used to allow the optical lens and the end of the mirror to form a certain imaging distance, thereby achieving a better imaging effect.

[0070] Example 2

[0071] Reference Figures 1 to 4 , which is the second embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that the film layer 100b includes an anti-fogging film 100b-1, an anti-scratch film 100b-2, an anti-reflection film 100b-3, and an anti-reflection film 100b-4. Up to 4 coating layers with different functions can be formed on the front and back sides, and the order of coating can be any one or a combination of multiple.

[0072] For example, if the vacuum coating process is used to coat the inner and outer surfaces of the lens with an anti-fogging film, both the inner and outer layers of the lens can have an anti-fogging function. Other functions can be added or reduced in the same way.

[0073] Furthermore, among the steps of the sheath head 200 separating the mirror and the lens, the outer first step 200a-1 is glued and connected to the lens 100, and the function of the first step 200a-1 is to complete the fixing of the lens;

[0074] Then, the sheath head 200 contacts and limits the end of the mirror through the inner second step 200a-2. The function of the second step 200a-2 is to separate the mirror and the lens 100 and limit the position. The entire step structure maintains the distance through thickness to assist imaging;

[0075] The sheath head 200 is further provided with a docking step, which exists as a joint portion between the sheath head 200 and the sheath tube 300 and is used to fix the sheath head 200 to the sheath tube under the premise of matching the joint conditions.

[0076] Example 3

[0077] Reference Figures 1 to 5 , which is the third embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that: the sheath head 200 is placed at the end of the sheath tube 300;

[0078] A base 400 is provided at one end of the sheath tube 300, and the base 400 serves to form an end clamping point for the sheath tube 300;

[0079] The sheath tube 300 is connected to the base 400 by means of a locking member 500. The sheath tube 300 is formed by combining and fixing two symmetrical halves. The fixing effect is achieved by the position of the locking member 500 on the base 400.

[0080] Specifically, the base has a semi-ellipse that is consistent with the shape of the mirror handle button, which can achieve the limit and help the doctor to quickly and accurately fix the angle and position of the sheath and the mirror during operation.

[0081] Furthermore, the control base 400 is covered with a sterile cover 600 fixedly connected to the sheath tube 300 .

[0082] In detail, the front end of the limiting base and the sterile cover are glued or ultrasonically welded, overfrequency welded, high-frequency welded, or hot-melt welded after penetrating a curing agent to meet the mechanical strength of 15N. There is no risk of separation of the limiting base and the sterile cover after penetrating into the patient's body, thereby ensuring the sterile isolation barrier of the mirror and the rear-end cables.

[0083] The second step 200a-2 of the sheath head 200 to prevent the mirror from extending, and the first step 200a-1 are parallel to the lens 100 and coincide with the front end of the mirror;

[0084] In detail, the angle of the specific steps also depends on the angle of the mirror;

[0085] In the technical solution, one end of the sheath head 200 and the internal lens 100 are both at an angle of 0° or 30° relative to the horizontal direction of the sheath tube 300.

[0086] Example 4

[0087] Reference Figures 1 to 8 , which is the fourth embodiment of the present invention, and this embodiment provides a method for forming a 3D electronic laparoscope sheath. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: a sheath protection structure is formed based on a mirror structure;

[0088] Superimpose a coating on the end of the mirror to protect the imaging effect;

[0089] Based on the coating structure, a sheath head is added to the end of the sheath tube to form a mirror lens protection structure;

[0090] Analyze the stress state between the sheath tube, sheath head and mirror to confirm the connection conditions.

[0091] In detail, the rod-shaped structure of the mirror is protected by a sheath tube, and a sheath head is provided at the end of the sheath tube to provide targeted protection for the imaging mirror and the light source part at the end of the mirror;

[0092] The step of the sheath head supporting the lens and the optical lens are glued or ultrasonically welded or over-frequency welded after penetrating a curing agent. A certain mechanical strength must be met so that there is no risk of falling off after penetrating into the patient's body.

[0093] Example 5

[0094] Reference Figures 1 to 7 , which is the fifth embodiment of the present invention. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: the sheath is placed on the periphery of the mirror; the sheath head is placed inside the sheath, in front of the end of the mirror; the lens and the end of the mirror are kept parallel and aligned at an angle; this is the most basic position limitation that needs to be made for the mirror sheath structure to match the mirror structure.

[0095] Furthermore, the inner mirror in the lens is made of aluminum oxide, that is, sapphire. The sapphire is cut to be consistent with the sunken step shape at the end of the sheath head, and the front and back sides are ultra-finely ground to achieve optical performance. There are two layers of steps inside the sheath head, one layer separates the end of the mirror and the lens and is fixedly connected to the two, and the other layer is clamped with the sheath tube.

[0096] Example 6

[0097] Reference Figures 1 to 7, which is the sixth embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that: the lens is subjected to a vacuum coating process to form a superimposed coating state, and the film layers are symmetrically or asymmetrically placed on both sides of the inner lens;

[0098] The film layers can be changed in order or reduced in number, including:

[0099] The chemical composition of antireflection film mainly includes two categories: inorganic materials and organic materials. Inorganic materials such as magnesium fluoride, silicon dioxide, etc.; organic materials such as polycarbonate, polyvinyl alcohol, etc.

[0100] Optical reflective film is a multilayer film composed of metal aluminum, oxide, silicon, and polymer film coating materials. During the preparation process, these materials are deposited layer by layer through vacuum coating process to form a film with high reflectivity.

[0101] The specific ingredients of the anti-scratch protective film include silica sol, silane coupling agent, hardener, PH regulator and solvent.

[0102] The main components of anti-fogging film include the following: silane compounds, organic polyurethane resins, silicone-modified hydrophilic resins, and nanomaterial coatings. When an electronic endoscope is imaging in vivo, low-temperature gas is input into the patient's body. When there is a temperature difference between the temperature in the cavity and the temperature in the mirror, fogging is likely to occur inside or outside the lens; the outside of the lens is likely to collide with the patient's bones and metal surgical instruments deep inside the patient's body, causing scratches on the lens. The lens is likely to cause reflections when it is at an angle of 0° or 30°, affecting the imaging of the mirror; the light transmittance of conventional lenses is 92%. In order to increase the light transmittance, a light-transmitting film needs to be plated to increase the light transmittance.

[0103] Example 7

[0104] Reference Figures 1 to 8 , which is the seventh embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that: the sheath head and the lens, the sheath tube and the sheath head, the sheath tube and the base, the joint points are all fixedly connected by adhesive sealing or high-frequency welding; wherein,

[0105] The minimum pressure resistance of the joint point is 120mmHg, and the hydrostatic pressure value is 120cmH 2 O-15 floats downward, the tensile strength between the sheath head and the lens is more than 30N, the tensile strength between the sheath head and the sheath tube is more than 15N, and the tensile strength between the sheath tube and the base is more than 19N.

[0106] In detail, the tensile strength of the combination of the sheath and the fixed base is tested using an electronic tensile testing machine and a special fixture to simulate the force of the doctor using a mirror to push the sheath head forward. The ejection force is gradually applied from 1 to 30N. When the ejection force is within 15N, there is no change in the sheath and the fixed base. When the applied force exceeds the doctor's force, the sheath head and the fixed base are at risk of loosening or falling off.

[0107] Specific experimental plan: A special suction cup is used to fix the lens and the sheath head with a special fixture, and an electronic tensile tester is used to test the bonding strength of the lens and the sheath head step 200a-1. Five different treatment methods are performed on the joint part before bonding [no penetration curing, half penetration curing, full penetration curing, second penetration curing, and third penetration curing]. After the adhesive is completely cured, the bonding strength test is performed. The test results are as follows:

[0108]

[0109] Preferably, secondary 100% infiltration curing is used, which can achieve a tensile strength of 30N and a hydrostatic pressure requirement of 120cmH2O.

[0110] Example 8

[0111] Reference Figures 1 to 8 , which is the eighth embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that:

[0112] The strength of the connection between the sheath head and the sheath tube is tested using an electronic tensile testing machine and a customized tensile testing fixture. The test found that when the tensile strength is greater than 15N, there is a risk of separation between the sheath head and the sheath tube during use, which may easily cause the patient to come into contact with the sterile mirror or the sheath head to fall off inside the patient's body.

[0113] Taking 2 times of 100% penetration curing as an example, each tensile strength test has 3 separation data, and the unit of tensile strength is N.

[0114] Tensile strength 1 2 3 4 5 6 7 8 9 10 11 12 13 Separation times 0 0 0 0 0 0 0 0 0 0 1 2 2 Tensile strength 14 15 16 17 18 19 20 21 22 23 24 25 26 Separation times 2 3 3 3 3 3 3 3 3 3 3 3 3

[0115] Preferably, the sheath head and the sheath tube have a minimum strength of 15N or more.

[0116] Example 9

[0117] Reference Figures 1 to 8, which is the ninth embodiment of the present invention. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that the tensile strength of the combination of the sheath tube and the fixed base is tested by an electronic tensile testing machine and a special fixture, simulating the force of a doctor using a mirror to push the sheath head forward after holding it, and the ejection force is gradually applied from 1-26N. When the ejection force is within 15N, there is no change in the sheath tube and the fixed base. When the applied force exceeds the doctor's strong use, the sheath head and the fixed base will be loose or fall off.

[0118] Taking 2 times of 100% penetration curing as an example, each tensile strength test has 3 separation data, and the unit of tensile strength is N.

[0119] Tensile strength 1 2 3 4 5 6 7 8 9 10 11 12 13 Loose times 0 0 0 0 0 0 0 0 0 0 0 0 0 Tensile strength 14 15 16 17 18 19 20 21 22 23 24 25 26 Loose times 0 0 1 1 1 2 2 2 2 3 3 3 3

[0120] Preferably, the sheath tube and the fixed base should at least meet the strength requirement of 19N or more.

[0121] Example 10

[0122] Reference Figures 1 to 8 , which is the tenth embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that the limiting base and the sterile cover are welded by ultrasonic welding, high-frequency welding, and hot-melt welding to meet a certain mechanical strength so that there is no risk of the sterile cover and the limiting base separating and falling off.

[0123] The test is divided into two parts, one is tensile strength and the other is hydrostatic pressure resistance. Hydrostatic pressure resistance is the data of hydrostatic pressure based on the thickness of the material and the strength of the bond. Tensile strength is also tested by an electronic tensile tester based on the strength of the bond.

[0124] Taking high-frequency welding as an example, the welding time, hydrostatic pressure test, and tensile strength test data of the sterile cover and the limit base are recorded.

[0125]

[0126] The preferred high-frequency welding time is between 2.5-5s to meet the requirements of hydrostatic pressure and tensile strength. Combined with other combined conditions, the more preferred welding time of 3-3.5s is the best welding time.

[0127] Embodiment 11

[0128] Reference Figures 1 to 8 , which is the eleventh embodiment of the present invention, is based on the previous embodiment, and is different from the previous embodiment in that: if adhesive sealing is used, secondary 100% penetration curing is required for bonding;

[0129] If high frequency welding is used, the welding time must be between 3s and 3.5s, the welding power frequency must not be less than 15KHz, and the power must be 1800w. If other welding frequencies are used, the power should be adjusted accordingly, and the welding time will also change.

[0130] The gap between the inner diameter of the sheath and the outer diameter of the mirror should be in the range of 0.05mm to 0.12mm.

[0131] When the locking piece is pushed back, the base and the mirror handle are locked to prevent them from loosening;

[0132] When the locking piece is pushed forward, the locking state of the base and the mirror handle is released, and the 3D electronic laparoscope sheath is removed.

[0133] In detail, the gap between the inner diameter of the sheath tube 300 and the outer diameter of the mirror should be greater than 0.05mm. We used a stainless steel solid rod with the inner diameter of the standard sheath tube 300 and the outer diameter of the simulated mirror, and used -0.05mm, -0.04mm, -0.03mm, -0.02mm, -0.01mm, 0.00mm, 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.08mm, 0.10mm, 0.12mm, and 0.15mm solid rods to penetrate the inner diameter of the sheath tube. It was found that -0.05mm to 0.00mm could not penetrate smoothly, 0.01mm to 0.04mm penetrated the inner diameter of the sheath tube from blockage to gradual smoothness, 0.05mm to 0.12mm penetrated smoothly and gradually naturally, but when it was 0.12mm or above, there was a more obvious gap and a certain looseness when penetrating. Looseness will cause the internal mirror to move and affect the imaging effect.

[0134] Specifically, the outer diameter of the mirror is within the range of 0.01-0.12 mm less than the inner diameter of the sheath tube so that it can pass through the inner diameter of the sheath tube without loosening and without affecting the imaging effect. More preferably, it is within the range of 0.05-0.12 mm less than the inner diameter of the sheath tube.

[0135] Example 12

[0136] Reference Figures 1 to 8 , which is the twelfth embodiment of the present invention, and this embodiment provides a loss-stopping method for using an optical hard tube. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that:

[0137] A closed space is formed at the end of the optical tube lens, and the closed space protects the entire optical tube lens end from contact with other substances or impurities in the air.

[0138] An imaging layer made of aluminum oxide is arranged in the enclosed space. Aluminum oxide, as the main component of sapphire material, has high light transmittance and imaging auxiliary effect. Under the premise of reasonable adjustment of the enclosed space, it can better complete the imaging task and does not affect the imaging under the premise of protecting the original optical hard tube lens end.

[0139] Specifically, when the imaging part needs to be cleaned or replaced, the imaging layer or even the enclosed space can be directly processed without disassembling the entire optical tube, which would cause operation and maintenance costs and wear concerns.

[0140] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0141] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0142] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0143] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A 3D electronic laparoscope sheath, placed outside the laparoscope, characterized in that: include, The lens (100) is composed of an inner lens (100a) and a laminated film layer (100b); A sheath head (200) separating the lens (100) from the end of the mirror; The sheath tube (300) covers the telescopic rod portion of the mirror.

2. The 3D electronic laparoscope sheath according to claim 1, characterized in that: The film layer (100b) comprises an anti-fogging film (100b-1), an anti-scratch film (100b-2), an anti-reflection film (100b-3), and an anti-reflection film (100b-4).

3. The 3D electronic laparoscope sheath according to claim 1, characterized in that: The sheath head (200) is provided with a limiting step (200a) and a docking step (200b); The limiting step (200a) is adhesively connected to the lens (100) via a first step (200a-1), and is in contact with the end of the mirror via a second step (200a-2).

4. A 3D electronic laparoscope sheath according to claim 2 or 3, characterized in that: The sheath head (200) is fixedly connected to the sheath tube (300) via a docking step (200b).

5. The 3D electronic laparoscope sheath according to claim 4, characterized in that: A base (400) is provided at one end of the sheath tube (300); The sheath tube (300) is connected to the base (400) by means of mortise and tenon joints via a locking member (500); The base (400) is covered with a sterile sleeve (600) that is fixedly connected to the sheath tube (300).

6. The 3D electronic laparoscope sheath according to claim 5, characterized in that: One end of the sheath head (200) and the lens (100) inside the sheath head (200) are both at an angle of 0° or 30° relative to the horizontal direction of the sheath tube (300).

7. A method for forming a 3D electronic laparoscope sheath, used for the 3D electronic laparoscope sheath, characterized in that: According to the 3D electronic laparoscope sheath according to claim 1, 2 or 5, A sheath protection structure is formed based on the mirror structure; Superimpose a coating on the end of the mirror to protect the imaging effect; Based on the coating structure, a sheath head is added to the end of the sheath tube to form a mirror lens protection structure; Analyze the stress state between the sheath tube, sheath head and mirror to confirm the connection conditions.

8. A method for forming a 3D electronic laparoscope sheath according to claim 7, characterized in that: Place the sheath tube outside the scope; The sheath head is placed inside the sheath tube and in front of the end of the mirror; The lens and the end of the mirror are kept parallel and at the same angle; The lens is made of anodized aluminum, and there is a step inside the sheath head to separate the end of the mirror and the lens and fix them together.

9. A method for forming a 3D electronic laparoscope sheath according to claim 8, characterized in that: The lens is vacuum coated to form a superimposed coating state, with the film layers symmetrically or asymmetrically placed on both sides of the inner lens; anti-reflection film composed of inorganic and organic materials; Anti-reflective coatings consisting of metal and polymer thin film coatings; Anti-scratch film with sol component and adjusting solvent composition; Anti-fogging film composed of organic resin, nano coating and silane compounds.

10. A method for forming a 3D electronic laparoscope sheath according to claim 9, characterized in that: When the sheath head and the lens, the sheath tube and the sheath head, the sheath tube and the base, and the base and the sterile cover are all fixedly connected by adhesive sealing, a secondary 100% penetration curing is required for bonding; among them, The minimum pressure resistance of the joint point is 120mmHg, and the hydrostatic pressure value floats upward at 120cmH2O; The tensile strength between the sheath and the lens is more than 30N; The tensile strength between the sheath head and the sheath tube is above 15N; The tensile strength between the sheath and the base is above 19N.

11. A method for forming a 3D electronic laparoscope sheath according to claim 9, characterized in that: When the sheath head and lens, sheath tube and sheath head, sheath tube and base, base and sterile cover are fixedly connected by high-frequency welding, the welding time must be 3s to 3.5s, the frequency of the welding power must not be less than 15KHz, and the power must be 1800w; among them, The minimum pressure resistance of the joint point is 120mmHg, and the hydrostatic pressure value floats upward at 120cmH2O; The tensile strength between the sheath and the lens is more than 30N; The tensile strength between the sheath head and the sheath tube is above 15N; The tensile strength between the sheath and the base is above 19N.

12. A method for forming a 3D electronic laparoscope sheath according to claim 7 or 11, characterized in that: The gap between the inner diameter of the sheath and the outer diameter of the mirror should be in the range of 0.05mm to 0.12mm.

13. A method for forming a 3D electronic laparoscope sheath according to claim 12, characterized in that: When the locking piece is pushed back, the base and the mirror handle are locked to prevent them from loosening; When the locking piece is pushed forward, the locking state of the base and the mirror handle is released, and the 3D electronic laparoscope sheath is removed.

14. A method for stopping loss when using an optical hard tube, characterized in that: include, A closed space is formed at the end of the optical rigid tube lens; An imaging layer made of aluminum oxide is arranged in the closed space.

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