115 results about "Gastrointestinal Endoscopes" patented technology

The invention relates to a painless gastrointestinal endoscope self-adaptive drug delivery method and system based on multi-source physiological signal fusion, and belongs to the technical field of medical artificial intelligence and automatic control. An artificial intelligence model is utilized to deeply extract features and quantitatively evaluate the sedation-analgesia level of a patient, a pharmacokinetics-pharmacodynamics model constructed by a big data platform is utilized to dynamically predict the drug effect according to the individual features and real-time state of the patient, and the anesthetic infusion rate is automatically and accurately adjusted through a closed-loop control algorithm, so that the patient can be accurately infused. Personalization and self-adaption of drug delivery are achieved, an independent safety monitoring mechanism is set, and real-time intervention is conducted on risk events such as respiratory depression. The problems that traditional anesthesia depends on artificial experience, single parameter monitoring is not comprehensive and individualized dynamic adjustment is lacked can be effectively solved, and the safety, comfort and medical efficiency of painless gastrointestinal endoscopy are remarkably improved.

The invention discloses a pH / temperature dual-response type quaternary ammonium salt-nano silver-zinc oxide composite antibacterial coating material as well as a preparation method and application thereof, and belongs to the technical field of antibacterial materials. The antibacterial effective life of the coated product is at least up to 5 years. The coating product is preferably a gastrointestinal endoscope, efficient bacteriostasis is achieved under the condition that the light transmittance of the gastrointestinal endoscope is not affected, biocompatibility is good, safety is high, precise controlled release of silver ions is achieved, and biotoxicity caused by sudden release of the silver ions is avoided. The quaternary ammonium salt-nano silver-zinc oxide composite coating material with the pH / temperature dual-response antibacterial effect is finally obtained through the steps of preparing a composite carrier material, loading antibacterial metal elements, constructing a pH / temperature dual-response polymer network and the like in sequence. A high-performance, safe and environment-friendly antibacterial coating system which is rapid in sterilization, precise in controlled release and long-acting in interference resistance is constructed, and an antibacterial solution with high technical adaptability is provided for the fields of medical treatment, food, water treatment and the like.

The invention provides an endoscopic image enhancement method and system, and relates to the technical field of medical image processing. The method comprises the steps that an endoscope image enhancement model composed of a local sensing network, a global color mapping network and a fusion network is constructed, details of a low-quality image are extracted through the local sensing network, colors of a high-quality image are learned through the global color mapping network, two-way features are integrated through the fusion network, and an endoscope enhancement image is output; and generating total loss through the total loss function to optimize the endoscope image enhancement model so as to output an endoscope image with high definition and real color. An end-to-end lightweight network is adopted, unified enhancement of extreme illumination coexistence scenes is completed at a time, and the visual consistency and diagnosis reliability of gastrointestinal endoscopic images are remarkably improved.

The present application relates to gastrointestinal endoscope accessory technical field, specifically provide a kind of foreign body extraction device for gastroenterology and its manufacturing method, device includes main air pipe and respectively communicated at both ends of main air pipe air bag cup and positive and negative pressure air pump;Air bag cup includes air bag cup framework and membrane structure;Air bag cup framework includes cup body, cup mouth air bag, support air bag, clamping air bag;The upper end of cup body is provided with suction port, and the lower end is communicated with main air pipe, and at least two opposite ends of cup body are provided with inflation port respectively;Suction port is provided with negative pressure valve, and inflation port is provided with positive pressure valve;Support air bag is supported between cup mouth air bag and cup body, and the inside of support air bag located in membrane structure is communicated with clamping air bag.The way of foreign body extraction gastrointestinal tract by negative pressure adsorption, compared with traditional jaw structure, without considering the gap between foreign body and gastrointestinal wall, without adjusting angle or orientation, with the characteristics of high operating efficiency, convenient operation.

The present application relates to the technical field of auxiliary identification positioning, in particular to an AI-assisted lesion positioning method and system based on a gastrointestinal endoscope. Based on segmentation boxes of different sizes, a gastric ulcer lesion area and a corresponding confidence level in a gastrointestinal endoscope image are identified. The completeness value of the gastric ulcer lesion area is determined. According to the number of times that a pixel point at each position is divided into the gastric ulcer lesion area under segmentation boxes of different sizes, in combination with the confidence level and the completeness value of the gastric ulcer lesion area to which the pixel point is divided, the region belonging value of each pixel point is obtained. Based on the region belonging value, the pixel points are merged to obtain a preliminary screening lesion area. The region belonging value of the pixel points and the distribution of the region in the preliminary screening lesion area are analyzed to determine the performance bias degree of each preliminary screening lesion area. Based on the performance bias degree, a target gastric ulcer area is determined from the preliminary screening lesion area. The present application improves the identification accuracy of the target gastric ulcer area.

1. The name of this design product: Digestive tract endoscope operating unit. 2. Application of this design product: used for the operating part of a gastrointestinal endoscope. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

A double-balloon multi-lumen catheter is disclosed. The catheter comprises an elongate catheter body including a plurality of lumens. The catheter also includes a plurality of occlusion balloons connected to one or more lumens, and one or more entry ports associated with the plurality of lumens. The catheter also includes an attachable catheter hub comprising a plurality of entry ports. The catheter hub is arranged to receive a proximal end of the elongate catheter body and fluidly connect one or more of the plurality of lumens to associated one of more of the plurality of entry ports. The entire length of the catheter body is configured to pass through the working channel of a gastrointestinal endoscope. The catheter hub is configured to be attached to the proximal end of the elongate catheter body allowing endoscope removal from the catheter body without disrupting the balloon position.

The utility model discloses an alarm device for an endoscope cleaning brush. The alarm device comprises a bendable thin tube, an alarm structure and a cleaning brush head. The alarm structure is composed of a shell and a mounting sleeve, one end of a bendable thin tube is connected with the shell, and the other end is connected with the mounting sleeve through a long-strip thin tube. A main controller, a buzzer alarm and a button battery are arranged in the shell, a high-sensitivity pressure sensor is integrated in the mounting sleeve, and the main controller is electrically connected with all the components to form a closed-loop monitoring system. According to the device, the problem of instrument damage caused by invisible resistance of a traditional cleaning brush is solved, the risks of bristle breakage and forceps channel scratching are reduced through intelligent alarming, the service life of an endoscope is prolonged, meanwhile, the cleaning quality is improved (the cleanliness is improved by two grades), and the device is suitable for cleaning operation of precise instruments such as gastrointestinal endoscopes.

The port anti-seepage device comprises a connecting sleeve used for being installed at an external port of the gastrointestinal endoscope and a protective sleeve used for being matched with the connecting sleeve, and a through hole allowing the connecting sleeve to be placed therein penetrates through the protective sleeve. A lens used for being aligned with an endoscope camera lens in an external gastrointestinal endoscope is connected to an opening of the through hole in a sealed mode and arranged close to the top wall of the protective sleeve. A connecting structure is arranged between the protecting sleeve and the connecting sleeve, the connecting structure is used for enabling the protecting sleeve and the connecting sleeve to be gradually and tightly connected and limited when the protecting sleeve repeatedly performs one-way rotation and downward movement relative to the connecting sleeve, and a locking structure is arranged on the protecting sleeve and used for limiting rotation of the protecting sleeve after the protecting sleeve and the connecting sleeve are fixedly connected. The gastrointestinal endoscope solves the problem that the gastrointestinal endoscope is damaged or cross infection occurs due to the fact that liquid easily permeates from a port of a traditional gastrointestinal endoscope.

The invention relates to the technical field of auxiliary identification and positioning, in particular to an AI auxiliary focus positioning method and system based on a gastrointestinal endoscope. Based on the segmentation frames of different sizes, identifying gastric ulcer focus areas in the gastrointestinal endoscope image and corresponding confidence coefficients; determining the integrity degree value of the gastric ulcer focus area; according to the number of times that the pixel point at each position is divided into the gastric ulcer focus area under the segmentation frames of different sizes, and in combination with the confidence coefficient and the integrity degree value of the gastric ulcer focus area into which the pixel point is divided, obtaining the area affiliation value of each pixel point; based on the value of the region, combining pixel points to obtain a primarily screened focus region; analyzing the area belonging values of the pixel points in the preliminary screening focus areas and the distribution condition of the areas, and determining the expression deviation degree of each preliminary screening focus area; and determining a target gastric ulcer area from the primarily screened focus area based on the expression deviation degree. The recognition accuracy of the target gastric ulcer area is improved.

This invention discloses an anti-fogging structure for gastrointestinal endoscope lenses, belonging to the field of endoscopy technology. The anti-fogging structure includes an instrument body. A controller, adjustment mechanism, and water supply mechanism are fixedly mounted on the surface of the instrument body. A connecting tube is fixedly connected to the surface of the instrument body, and a probe is fixedly connected to the end of the connecting tube. The connecting tube and the probe are used to insert into human organs. The adjustment mechanism is used to adjust the position of the probe. The lens body is fixedly mounted on the surface of the probe. A heating tube is tightly fitted to the surface of the lens body, forming a highly efficient heat conduction structure. When sterile water is delivered to the heating tube through the outlet tube, the heating tube rapidly heats up and evenly transfers heat to the surface of the lens body, avoiding blurred vision caused by fogging. Furthermore, using sterile water as the medium avoids the risk of secondary contamination and meets medical-grade safety standards, balancing functionality and hygiene requirements.

The storage and transportation cart comprises a storage and transportation box and an air-drying fan, the space inside the storage and transportation box is divided into an air-drying cavity and a storage cavity from top to bottom by a horizontal partition plate which is horizontally arranged, and the air-drying fan is fixedly installed in the air-drying cavity; a rotating disc is further horizontally and rotatably installed in the air drying cavity, a plurality of storage boxes are horizontally and fixedly installed on the rotating disc in the circumferential direction of the rotating disc at uniform intervals, the upper sides of the storage boxes are open and used for storing cleaned and disinfected gastrointestinal endoscopes respectively, and the air drying fan is used for air drying the gastrointestinal endoscopes in the storage boxes. The gastrointestinal endoscope storage box has the advantages of being compact in structure, reasonable in design, capable of integrating cleaning, disinfection, air drying and storage of a gastrointestinal endoscope, diversified in function and convenient to store; in addition, synchronous air drying of a plurality of gastrointestinal endoscopes can be achieved through one air drying fan, and the air drying efficiency is high.

The utility model discloses a gastrointestinal endoscope host connecting tube which comprises a connector body, a fixing cap and a locking cover, a flow channel is formed in the center of the connector body, a plug-in nozzle is arranged at the left end of the connector body, locking threads are arranged on the surface of the plug-in nozzle, and the locking cover is connected to the surface of the plug-in nozzle in a sleeved mode and detachably connected with the plug-in nozzle. A sliding groove is formed in the right end of the connector body, a buckling hole is formed in the center of the fixing cap, the fixing cap is connected to the surface of the sliding groove in a sleeved mode, and fixing threads are arranged in the fixing cap. The connecting pipe connector is composed of the connector body, the fixing cap and the locking cover, the convenience of connection between the connecting pipe and the connector body is improved, the fixing cap which is rotationally connected is arranged at the front end of the connector body, and the stability of connection between the connector body and a gastrointestinal endoscope host is improved; the locking cover in threaded connection is arranged at the rear end of the connector body, so that the stability and the sealing performance of connection between the connecting pipe and the connector body are improved.

The utility model provides a portable gastrointestinal endoscope washing device which comprises an enzyme barrel and a storage mechanism arranged on the side wall of the enzyme barrel, and a through hole is formed in the side wall of the enzyme barrel. The storage mechanism comprises a storage box and a shielding assembly, the storage box is located on the outer side wall of the enzyme barrel and communicated with the through hole, the shielding assembly is movably connected with the storage box through a movable assembly, the shielding assembly moves in the enzyme barrel, and a water bag, an enzyme bag, enzyme gauze and buffer cloth are arranged in the shielding assembly; water in the water bag and enzyme in the enzyme bag are configured according to a preset proportion, the buffer cloth in the shielding assembly is used for wrapping the water bag and the enzyme bag, and a puncture needle for puncturing the water bag and the enzyme bag is arranged on the shielding assembly. According to the enzyme barrel, all cleaning tools can be integrated through one enzyme barrel, the enzyme barrel is very portable to use, and the buffer cloth can respectively protect the bag and the lens at the shielding assembly and the barrel bottom, so that the enzyme barrel is very safe.

The application discloses a system for gastrointestinal signal detection during endoscopy, which comprises a gastroscope or enteroscope system and a real-time signal monitoring system. The real-time signal monitoring system comprises a real-time signal receiving unit, which is in communication with the operation channel of the gastrointestinal endoscopy system, for receiving the pressure value of the in-vivo end of the gastroscope or enteroscope system in real time, and is internally provided with a micro pressure sensor and a wireless signal sending module; a signal display and processing unit, which is internally provided with a wireless signal receiving module, and the real-time pressure value sent back wirelessly by the wireless signal receiving module is displayed by constructing a pressure curve; and a connecting structure for connecting the real-time signal receiving unit with the gastroscope or enteroscope system, which is set by a wireless signal transmission mode in the real-time signal receiving unit and the signal display and processing unit, so that the real-time signal receiving unit can wirelessly transmit the pressure value received in real time to the signal display and processing unit, and a pressure curve is constructed, and clinical diagnosis is performed according to the pressure curve.

The application relates to a medical image recognition method and device based on a ladder type feature fusion network, wherein the method designs a medical image recognition network based on ladder type feature fusion, the network is designed in a ladder type, and from left to right, the network comprises a stem layer, four level networks and a classification layer; the number of subnetworks included in each level network decreases in turn, each subnetwork of the first, second and fourth level networks comprises a plurality of continuously stacked MBC-GRN modules, and each subnetwork of the third level network comprises a plurality of stacked Inverted-Transformer modules; the network is used for recognizing a to-be-tested medical image, and greatly helps in recognizing a gastrointestinal endoscope medical image. The network uses a large receptive field and an attention mechanism to extract features, and meanwhile, a specific ladder type network architecture realizes cross-subnetwork feature fusion; the method reduces network parameters and calculation amount, and improves recognition precision.

The utility model relates to the technical field of containing bottles, in particular to a containing bottle for gastrointestinal endoscope positioning marking liquid, which comprises a bottle body and a sterile syringe placed in the bottle body, the output end of the sterile syringe is sleeved with a sealing sleeve, the top end of the bottle body is detachably provided with a bottle cap, and the bottle cap can be fixed by adjusting the height of a piston piece. Furthermore, the internal storage space of the accommodating bottle above the piston piece is kept consistent with the height of the sterile syringe to be placed, so that after the sterile syringe is placed in the accommodating bottle, no redundant moving space exists, the sterile syringe cannot be damaged due to shaking and collision, and the service life of the sterile syringe is prolonged. Meanwhile, the problem that gastrointestinal endoscope positioning marking liquid in the sterile syringe leaks is avoided, a conical extrusion cavity is formed in the bottom of the limiting head, and a piston piece at the bottom is matched to extrude and abut against the lower portion, so that one end and one end of the sterile syringe are firmly extruded and fixed, and the stability of the sterile syringe in the transportation process is further improved.

The invention belongs to the technical field of medical simulation. According to the digestive endoscope virtual simulation training system and the digestive endoscope operation evaluation method, a background control terminal carries a visual interaction platform and a user assessment system, an attitude sensor is arranged in a box body, a handle is used for simulating key operation of an endoscope, and the visual interaction platform is connected with the user assessment system. A virtual digestive tract modeling scene is configured in the visual interaction platform; the handle and the attitude sensor are both in communication connection with the control terminal; the control terminal is in communication connection with the background control terminal; the visual interaction platform restores the operation behavior track of the endoscope in the virtual digestive tract modeling scene according to the received posture data of the endoscope and in combination with the virtual digestive tract modeling scene; an endoscope video is collected through a camera on a handle, and a user assessment system performs operation evaluation on the digestive endoscope according to an operation behavior track, the endoscope video and a diagnosis report of a user; and the accurate restoration of the endoscope operation process is realized.

The embodiment of the invention relates to the technical field of anesthesia complication prevention, and discloses a gastrointestinal endoscopy anesthesia medicine model training method, device and equipment and a storage medium. The trained gastrointestinal endoscopy anesthesia medication model can automatically obtain related operation data according to the vital sign data of the patient, so that an anesthesia operation can be performed on the patient, the labor cost of painless gastrointestinal endoscopy can be reduced, the risk of anesthesia operation errors caused by human errors can be reduced, and the patient experience is improved. And convenience is provided for patients performing painless gastrointestinal endoscopy.

1. Name of the product in this design: Packaging box and its main body. 2. Purpose of this design: The entire product and parts thereof are used to house electronic upper gastrointestinal endoscopes and electronic lower gastrointestinal endoscopes. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Design 1 is designated as the basic design. 6. Other situations requiring explanation: Design 2 is a partial design, and the dashed lines in the figure indicate the parts that do not require protection.

The invention relates to the technical field of gastrointestinal endoscopy auxiliary instruments, and discloses an auxiliary traction device for gastrointestinal endoscopy, which comprises an outer cylinder, an adjusting assembly is arranged on the right side of the outer cylinder, a handle is arranged on the right side of the adjusting assembly, and a driving assembly extending to the left side of the outer cylinder is arranged on the inner side of the outer cylinder. A traction mechanism is arranged on the left side of the driving assembly, a fixing mechanism connected with the traction mechanism is arranged on the outer side of the driving assembly, clamping bases are fixedly installed at the top and the bottom of the outer cylinder correspondingly, a protection mechanism is arranged on the left side of the outer cylinder, and connecting mechanisms connected with the clamping bases are arranged at the top and the bottom of the protection mechanism correspondingly. A traction mechanism and a fixing mechanism are arranged, a mounting cylinder is movably mounted on the left side of a moving block, a clamping piece is used for clamping tissue, a limiting block is clamped into a clamping groove of the mounting cylinder, the purpose that the traction clamping piece is detachable is achieved, and a clamping base, a protection mechanism and a connecting mechanism are arranged, so that the purpose of arranging a protection structure is achieved.

A gastrointestinal endoscope comprises a grip, a display screen arranged at one end of the grip, an enteroscope tube inserted into one end of the grip, and a camera arranged at one end of the enteroscope tube and connected with the display screen through a wire. Wherein one end of the display screen is provided with a connecting groove with a clamping block, one end of the grip is provided with a rotatable connecting piece, and one end of the connecting piece is provided with an inserting groove for inserting the clamping block, so that the display screen is allowed to rotate on the connecting piece towards a first direction through the clamping block; the connecting piece is allowed to drive the display screen to rotate towards a second direction on the grip; the medical display screen is convenient to carry and use by a user, the display screen can rotate and move to a position where medical staff can observe conveniently by arranging the rotatable connecting piece and the display screen, and the medical staff can use the medical display screen conveniently.

The invention discloses an application method of cyclopofol combined with high-frequency jet ventilation in a painless gastrointestinal endoscope for obese patients, and provides an application scheme of cyclopofol combined with high-frequency jet ventilation. Before an operation, BMI, airway, cardiopulmonary functions and complications of a patient are comprehensively evaluated, fasting and water prohibiting are completed, and equipment drugs are prepared. During anesthesia induction, a patient lies on the back, and after oxygen uptake and nitrogen removal, cyclopofol is intravenously injected according to the speed of 0.5-1 mg / kg / min until consciousness and eyelash reflex disappear. The mask or the nasal catheter is selected to be tightly connected with the airway, and the ventilation frequency is set to be 60-120 times per minute and other parameters according to the physical signs of the patient and is adjusted as required. In gastrointestinal endoscopy, the device is inserted after stable ventilation, 0.05-0.1 mg / kg cyclopofol is added according to conditions to maintain anesthesia, and vital signs such as heart rate, blood pressure and the like are tightly staring at in the whole process. After operation, ventilation and anesthesia are stopped, oxygen inhalation is conducted in a resuscitation room, and after consciousness is recovered, vital signs are stable and swallowing cough reflex is normal, the patient is sent back to a ward. The method effectively reduces the examination risk of obese patients, improves the comfort, and has wide application prospects.

The utility model provides gastrointestinal endoscope cell forceps which comprise a clamping mechanism and an ejection mechanism arranged on the clamping mechanism, the clamping mechanism comprises two jaws which move relatively, through holes are formed in the jaws in a penetrating mode, and the ejection mechanism is arranged on the two jaws. The ejection mechanism comprises a relative rotation assembly arranged on the clamping mechanism and two arc-shaped ejection rods oppositely arranged on the relative rotation assembly, the size of the arc-shaped ejection rods is smaller than that of the through holes, and the relative rotation assembly drives the two arc-shaped ejection rods to move relatively. According to the gastrointestinal endoscope cell forceps, the human tissue can be conveniently separated from the jaw, and the human tissue does not need to be tediously stripped through filter paper.

The invention relates to the field of tumor volume detection, and discloses a TOF technology-based tumor volume detection device for a gastrointestinal endoscope, the TOF technology-based tumor volume detection device comprises a gastrointestinal endoscope body, a detection head is mounted on one side of the gastrointestinal endoscope body, and a CCD cable, a forceps tube, an air supply tube and a water supply tube are sequentially mounted in the detection head; illumination light sources are symmetrically mounted in the middle of the detection head, a mounting block is fixedly connected to one side of the detection head, an adjusting and limiting structure is fixedly mounted on one side of the mounting block, and a scraping plate is arranged on one side of the adjusting and limiting structure. The scraping plate can be driven by the adjusting limiting structure to clean one side of the detection head, the cleaning efficiency is enhanced through the water spraying structure when the scraping plate is cleaned, the position of the TOF sensor on the mounting block can be adjusted according to requirements by utilizing the adjusting limiting structure, the size of a tumor block is measured by utilizing the TOF sensor, and the detection efficiency is improved. And real volume data of the tumor in the body is obtained.

1. The name of the design product: carbon dioxide gas delivery device. 2. The use of the design product: the product is used with gastrointestinal endoscope, and is used for delivering carbon dioxide to the detection part of the patient to improve the field of view. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

1. The name of this design product: Endoscope image processor all-in-one machine. 2. Purpose of this design product: Used for image processing in endoscopic diagnosis and treatment with electronic bronchoscopes, electronic nasopharyngeal endoscopes, electronic upper gastrointestinal endoscopes, electronic lower gastrointestinal endoscopes, etc. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses a gastrointestinal endoscope protection structure, and relates to the technical field of medical instruments. The gastrointestinal endoscope protection structure comprises a bearing plate provided with an air bag, and further comprises a plurality of clamping plates arranged on the bearing plate in a sliding mode, and the clamping plates are in an arc shape; the air guide assembly is arranged on the bearing plate and used for controlling the air amount in the air bag, and the outer wall of the middle of the air bag is in a corrugated shape; the rotor is rotationally arranged at the bottom of the bearing plate; the slidable clamping plates are designed, the clamping cavity is formed through gathering of the clamping plates, the lens of the gastrointestinal endoscope is sealed in the clamping cavity, damage to a precise photosensitive element in the lens of the gastrointestinal endoscope due to changes of external intense light rays in the placing state is prevented, and meanwhile, the lens of the gastrointestinal endoscope is prevented from being damaged by the change of the external intense light rays. When the lens of the gastrointestinal endoscope is sealed in the clamping cavity, the lens of the gastrointestinal endoscope can be kept in a floating state, so that external vibration and collision are prevented from being directly transmitted to the lens of the gastrointestinal endoscope, and the lens is prevented from being scratched or damaged.

1. The name of the design product: the tip of the gastrointestinal endoscope. 2. The use of the design product: medical endoscope for inserting into the gastrointestinal tract of human body. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention discloses a preparation method for manufacturing any customized circuit on various medical instrument hoses, and belongs to the field of micro-nano manufacturing. Compared with other preparation methods in the prior art, the method has the advantages that the operation is repeated and universal, the production cost is low, the patterning on the taper edge with the minimum curvature radius is different from the traditional standard planar micro-nano processing technology, for example, the patterning can only be carried out on the plane by using the traditional photoetching and film coating, and the manufacturing cost is low. And operation cannot be carried out on the surface of the hose with the extremely small curvature radius. According to the invention, the preparation of any customized circuit can be realized on the surfaces of various medical instrument hoses. By means of the method, flexible sensors can be integrated on the surfaces of any customized circuits manufactured on the surfaces of hoses of various medical instruments, such as indwelling needles, gastrointestinal endoscope tubes, catheters, endoscopes, drainage tubes and other instruments with flexible tube cavity structures.