Abstract: An endoscope of an endoscope system includes a channel of which a distal end forms a distal opening at a distal end of an insertion portion, of which a proximal end forms a proximal opening at an operating portion, and used for at least suction, and a suction duct of which a distal end forms a suction opening at the operating portion and of which a proximal end is connected to a suction device. An endoscopic accessory includes a capture portion to be connected to an accessory insertion portion and detachably attached to the operating portion of the endoscope, and the capture portion includes a communication path to communicate the proximal opening with the suction opening when the capture portion is attached to the endoscope, and a capture unit interposed in the communication path and to capture the tissue being sucked from the channel into the suction duct.

Abstract: An endoscopic surgical instrument has an insertion portion to be inserted in a channel of an endoscope, a treatment portion provided at a tip of the insertion portion for treating an objective part and a manipulation portion provided close to a proximal end of the insertion portion. The operator can move the insertion portion forward and backward at least relative to the channel by operating the manipulation portion in a state the endoscopic surgical instrument is inserted in the channel of the endoscope. In this manner, by the manipulation portion, the endoscopic surgical instrument can be operated to move forward and backward relative to the channel. Therefore in case the manipulation portion is located close to a channel entrance (forceps port) of the endoscope, the operator of the endoscope is able to manipulate the endoscopic surgical instrument without assistance from others.

Abstract: A first balloon is fitted to an insertion portion of an endoscope and a second balloon is fitted to an insertion aid member. An end connector of a tube is connected to a balloon control device that supplies and sucks air into and from the first balloon and the second balloon. A duct that communicates with the first balloon, a duct that communicates with the second balloon, and a duct that communicates with a clearance between the insertion portion and the insertion aid member are formed in the end connector.

Abstract: A self-sealing introducer is disclosed that allows easy introduction of a catheter into a working channel of a surgical instrument while minimizing fluid leakage before, during and after catheter insertion.

Abstract: An endoscope including a handle and an insertion tube, adapted for insertion into a patient, connected to the handle. In addition, the endoscope includes at least one valve, mounted on the handle, for controlling flow through one or more channels, which valve has at least two stable states. In the stable states the valve does not apply a force to leave the state.

Abstract: An endoscope treatment instrument stopper fitted in a channel opening of a treatment instrument insertion channel of an endoscope, includes a first stopper section having a first treatment instrument insertion hole into which a treatment instrument is inserted; a stopper frame having a stopper section fitting portion, fitted in the channel opening, having therein the first treatment instrument insertion hole of the first stopper section to be opposite the channel opening, and provided with a tearing capable of tearing the stopper frame removed from the channel opening; and a second stopper section having a second treatment instrument insertion hole into which the treatment instrument is inserted, removable from the stopper section fitting portion of the stopper frame, and formed so that the second treatment instrument insertion hole is opposite the first stopper section when the second stopper section is fitted in the stopper section fitting portion.

Abstract: When a suction button is pushed in a pushing operation direction, the suction button pushes down longer lever ends of inversion levers, shorter lever ends of the inversion levers are pushed up based on a seesaw operation and the principle of leverage, and a piston body coupled through a coupling body moves in a direction opposed to a pushing operation direction against an urging force of a spring in cooperation with this upward movement. As a result, a valve moving portion moves away from a valve receiving portion to open a suction duct valve portion and suction is carried out, but the piston body retires to an outer periphery side of a bent duct when the valve portion is opened, and hence a suction duct is widened, thereby facilitating suction of even, e.g., a fluid having high viscosity.

Abstract: Systems, methods and devices for performing pulmonary procedures, and in particular treating lung disease. A flow control element includes a valve that prevents airflow in the inhalation direction but permits airflow in the exhalation direction. The flow control element is guided to and positioned at the site by a bronchoscope that is introduced into the patient's trachea and used to view the lungs during delivery of the flow control element. The valve may include one, two or more valve elements, and it may be collapsible for easier delivery. A source of vacuum or suction may be used to increase the amount of fluid withdrawn from the lung tissue. A device for measuring hollow structures, such as bronchioles, and a device for removing a previously-placed flow control element are disclosed as well.

Abstract: An over-tube for use in an endoscopic treatment in an abdominal cavity using an endoscope includes an over-tube main body which is inserted from a distal portion thereof via a natural opening in a patient's body to access the inside of the abdominal cavity from the distal portion through a lumen wall, and an internal cover which is disposed in a passage of the endoscope disposed in an inner cavity of the over-tube main body and which is extractible from a proximal portion of the over-tube main body.

Abstract: An endoscopic fluid supply conduit system for use with an endoscope having an insertion tube and a universal cable connected to and from a manipulating head assembly. A fluid conduit is provided internally of the insertion tube to supply a fluid from a fluid feed port on the manipulating head assembly toward a fluid jet injection port feed port which is provided on a rigid tip end section at the fore distal end of the insertion tube. In addition, a second fluid conduit is provided internally of the universal cable and toward the manipulating head assembly. A fluid supply channel selector is provided at the fluid feed port to which a fluid feed adaptor is to be disconnectibly connected.

Abstract: A proximal connector of an endoscope shaft can be manually attached to and detached from a console, such that the connector and endoscope shaft can be provided as a single use device. An interface between the proximal connector and console can include a sliding plate moveable to operably make and break at least some of the connections between the console and endoscope shaft. A fluid reservoir may be separately connected to the proximal connector and hang from a mount on the interface.

Abstract: An endoscopic aspiration device is mounted on a manipulating head of an endoscope, from which an elongated insertion rod member is extended forward, the endoscopic aspiration device being composed of a valve casing which is mounted on the manipulation head in communication with an aspiration passage running through the insertion rod member, and a valve assembly unit including a valve member, a valve guide member and a connector member attached to the valve guide member to communicate same with a proximal aspiration passage on the side of a suction source. The valve member is put in a sliding displacement along the valve guide member to bring the aspiration passage into and out of communication with the proximal aspiration passage on the side of a suction source. The valve guide member is coupled with the valve casing through a coupling mechanism which permits to turn the valve assembly unit on and relative to the manipulating head.

Abstract: The present invention is an integrated and automated irrigation and aspiration system for use in an endoscopic imaging system. The system provides for the automated cleaning of poorly prepared patients during a colonoscopy procedure as well as automated cleaning of an imaging system of an endoscope. The invention analyzes images obtained from an image sensor to detect the presence of an obstructed field of view, whereupon a wash routine is initiated to remove the obstruction. The wash routine may be adjusted in accordance with environmental conditions within the patient that are sensed by one or more sensors within the endoscope. In another embodiment, insufflation is automatically controlled to inflate a patient's colon as a function of one or more sensor readings obtained from one or more environmental sensor(s) on the endoscope.

Abstract: A flexible fiber optic bronchoscope with one-way valve is provided in which a unidirectional flow control valve is inserted between the bronchoscopic manifold port and the sealing cap. A compressible diaphragmatic seal with radial slits separate resiliently returnable valve flaps that deformably compress around the shaft of any inserted conduit. A circumscribing housing for typically affixing along a lower receiving ring to the bronchoscopic manifold port to which the sealing cap would normally be attached. An upwardly extending, annular attachment protuberance thereby provides the attachment for the conventional sealing cap.

Abstract: Disclosed herein are various systems and methods for guiding, supporting, and/or housing instruments. One exemplary system includes a guide tube having a manipulation section and mated with rails carrying instrument control members. Moving the rails with respect to the guide tube, or another point of reference, can control movement of the manipulation section.

Abstract: An in-vitro model apparatus of a human spine and methods for detecting and analyzing substance distribution patterns therein. In one embodiment, the model apparatus includes a column body defining a passageway that substantially mimics the size, shape, and structure of an adult human spinal canal. Also included is a cord structure that may be located and anchored within the passageway. The cord structure substantially mimics the size, shape, and structure of an adult human spinal cord. For example, the cord structure may include connecting elements that resemble nerve roots, dentate ligaments, and the septum posticum of a human spine. The passageway of the model apparatus may be filled with a first fluid that simulates cerebro-spinal fluid (CSF), and a second fluid containing a drug (or simulated drug) may be introduced into the passageway, after which the drug's distribution within the passageway may be analyzed.

Abstract: A method for autoclave sterilization of an endoscope 2 of the present invention includes the step of making a space, which is defined by the outer side of a channel and an outer covering member of the endoscope 2, communicate with the outside of the endoscope, while at least one end of the channel communicates with the outside of the endoscope 2 and the channel is inserted through the inside 47 of the endoscope. The space 47 and the outside of the endoscope are once brought into the negative pressure. Thereafter, steam is introduced in the space 47 and the outside of the endoscope, and the endoscope 2 is sterilized.

Abstract: Mounted internally of a casing of a manipulating head assembly of an endoscope is a branching passage member to connect a base end of a biopsy channel with a biopsy channel entrance way and a suction passage. The branching passage member is retained in position by threaded engagement with a biopsy channel entrance pipe which is fitted in the biopsy channel entrance way. Further, the branching passage member is provided with restrictive members thereby to restrict movements of the branching member except a movement toward the biopsy channel entrance pipe when the branching member is pulled into the biopsy channel entrance way for engagement with the entrance pipe.

Abstract: A continuous flow irrigation endoscope and a continuous flow irrigation fluid management system, both designed to be compatible to each other and to function as a single system. The endoscope and the fluid management system are synergistic to each other such that both enhance the efficiency of each other. The invented system allows a body tissue cavity to be distended by continuous flow irrigation so that detached tissue pieces and waste fluid present inside a body tissue cavity are continuously automatically evacuated from the tissue cavity without causing the cavity to collapse at any stage and without the need of withdrawing the endoscope of a part of the endoscope from the tissue cavity. No type of feedback mechanism, such as mechanical or electrical, or valve or valve like systems, are incorporated in the endoscope to influence or facilitate the removal of detached tissue pieces or waste fluid in any manner.

Abstract: In an adaptor for endoscope forceps opening: an adaptor connecting member includes an opening groove which is formed in its axial direction and from/to which the treatment tool is detached/attached, and an engaging groove integrally-formed to the opening groove; a treatment tool integrating member includes a flexible long member connected to the adaptor connecting member and an engaging projection which is fit into the engaging groove and fixes the treatment tool in close contact thereat; and a treatment tool position changing member is rotatably connected to the adaptor connecting member and includes a through-groove from which the treatment tool is detached and an opening notch portion communicated with the through-groove, wherein the opening groove, engaging groove, through-groove, and opening notch portion are arranged on the straight line.

Abstract: The instrument has an original cleaning system, which includes a gas nozzle supplying a gas jet onto the optical surface under high pressure. This pressure is sufficient to enable the gas jet to be a single cleaning means for cleaning the optical surface in all clinical instances. A safety means prevents the patient's internal organs from barotrauma by the gas jet and includes a gas jet catcher and a suction pump of ejection type. The latter is arranged in the instrument's handle and can be used also for the removal of abundant secretions or body's small particles from the patient's cavity. Besides, the gas jet and the suction pump along with a control means form the system for pressure control within the patient's cavity.

Abstract: An endoscopic imaging system for examining a patient's body cavity includes an endoscope having a distal end, a proximal end and a number of lumens therein. One or more distal gas ports are disposed at or adjacent the distal end of the endoscope and one or more proximal gas ports are disposed proximal to the distal gas ports. Insufflation gas is delivered to the distal gas ports and withdrawn from the proximal gas ports or vice versa such that a gas bubble is formed in the body cavity and travels with the distal tip of the endoscope.

Abstract: An endoscope system for retrieving a capsule endoscope includes an endoscope and a receptacle. The endoscope includes an insertion section having a distal end and a proximal end and configured to be inserted into a body cavity of a patient, and an operation section arranged at the proximal end of the insertion section. The receptacle is provided in the distal end of the insertion section of the endoscope and configured to hold the capsule endoscope in order to retrieve the same.

Abstract: An endoscope system is provided and includes: a plurality of guide tubes that is pierced into a subject coelom swelled by supplying a pressurized gas; an endoscope inserted into one of the plurality of guide tubes; a treatment piece inserted into at least the other one of the plurality of guide tubes; an injection nozzle that intermittently inject a cleaning gas to an observation window at a front end of an inserting portion of the endoscope so as to flow along a surface of the observation window, the cleaning gas being the same as the pressurized gas; and a cleaning gas supply controller capable of setting an injection pressure and an injection time period of the cleaning gas under a condition that an injection amount of the cleaning gas becomes equal to or smaller than a leakage amount of the pressurized gas leaked from inside of the coelom.

Abstract: An endoscope system for performing medical treatments uses a medical endoscope equipped with an observation window and at least one treatment instrument for medical treatments which are inserted into a body cavity of a human patient through trocar inserted and maintained in incisions formed in the patient body, respectively. The body cavity is inflated with an inflation CO2 gas supplied through one of the trocars. In order to form a curtain of CO2 gas for protection of the observation window from dirt particles, the endoscope has a spray nozzle through which a jet of cleaning CO2 gas is continuously emitted at an emission rate controlled less than leakage of CO2 gas from the body cavity through the trocars.

Abstract: A cleaning device for cleaning an observation window (25) installed to an insertion section (2) of a rigid endoscope (1) is equipped with a nozzle (21) to spray selectively cleaning liquid and a pressurized CO2 gas against the observation window (25), internal conduits (23, 24) through which the cleaning liquid and the CO2 gas are supplied to the nozzle (21) and external conduits (90,30; 40) detachably connected to the internal conduits (23, 24), respectively, so as to distribute the cleaning liquid and the CO2 gas into the internal conduits (23, 24), respectively, from a liquid container (60) and a gas container (89) respectively. The gas supply external conduit (40) has a flow path diameter smaller than the liquid supply external conduit (30).

Abstract: A balloon control apparatus includes a balloon, a flow rate adjustment section, a setting section and a control section. The balloon is attached to an insertion section of an endoscope and/or an insertion aid instrument for guiding insertion of the insertion section of the endoscope. The flow rate adjustment section adjusts an air supply flow rate to the balloon and/or an exhaust flow rate from the balloon. The setting section sets the air supply flow rate and/or the exhaust flow rate. The control section controls the flow rate adjustment section so that the air supply flow rate to the balloon and/or the exhaust flow rate from the balloon become the air supply flow rate and/or the exhaust flow rate set by the setting section.

Abstract: A sigmoidoscope comprises at least one disposable part, in combination with a device for insufflation of a body cavity with a medium via the sigmoidoscope, the medium being susceptible to contamination by a contaminant during use of the sigmoidoscope. The insufflation device and the sigmoidoscope are connected, or adapted for connection, to one another. The sigmoidoscope and/or the insufflation device are provided with a disposable contamination prevention device, or being so formed and arranged, that no non-disposable part of the sigmoidoscope and no non-disposable part of the insufflation device is exposed to any contaminated medium during use of the sigmoidoscope.

Abstract: A valved plug to be fitted on a mouth piece at an inlet opening of an endoscopic biopsy channel. The plug as a whole is formed of a resilient material, and has, at the opposite ends of a foldable connecting strip or string, a generally tubular main body portion which is provided with a constricted portion in its axial passage, and a valved nesting piece which is adapted to be detachably coupled with the main body portion and provided with a normally closed slit valve axially in an aligned position relative to the constricted passage on the side of the main body portion. The main body portion is provided with an inward interlocking projection of a predetermined thickness at its outer end, for tight interlocking engagement with an interlocking groove which is provided on the side of the nesting piece in such a way as to grip the interlocking projection tightly in a compressed state.

Abstract: A space through which a cooling fluid flows is provided in the inside of a connection portion between an endoscope and a light source device in order to cool heat generated in the connection portion. For example, a device for performing air supply or air suction (at least either one of air supply and air suction) in the endoscope communicates with the space, and cooling is effected by the flow of air formed by the device. In a preferred example of a cooling method, when neither air supply nor air suction is needed during manipulation of the endoscope, the device and the space are connected to each other to effect cooling, and when air supply or air suction is needed, the flow of air used for cooling is intercepted, and is exclusively directed to an air channel in the endoscope.

Abstract: The invention provides an apparatus and methods for depositing materials on a substrate, and for performing other selected functions, such as material destruction and removal, temperature control, imaging, detection, therapy and positional and locational control. In various embodiments, the apparatus and methods are suitable for use in a tabletop setting, in vitro or in vivo.

Abstract: In an endoscope apparatus, an air/water switch (15) that is provided in an operating section (9) of an endoscope (5) each generate an air feed on/off signal and a suction on/off signal, and air feed flow and suction flow signals that are responsive to the amount of depression of each of the switches, these signals being sent to a signal processing circuit (33). The signal processing circuit (33) controls a air/water feed control valve 40 and a suction force control valve 50, so as to control air/water feed flow and suction flow, a flow display being made by an indicator (65) on the screen (63) of a TV monitor (35).

Abstract: A suction valve for an instrument includes a valve insert secured in a valve housing. A first sleeve connects the interior of the valve housing to a first suction channel of the instrument; and a sealing membrane seals a first portion of the interior of the valve housing from the valve insert. The sealing membrane is fixed in the valve housing by the valve insert that includes a valve plunger for opening and closing the sealing membrane by movement in a first direction.

Abstract: A suction valve for an endoscope use includes a valve casing which is set up in the control portion of an endoscope and is connected with a suction side path having an opening as a suction inlet at the tip distal end of the insertion portion of the endoscope and is also connected with a suction source side path connected with a negative pressure generation source, and a valve member which is fitted up in the valve casing to be allowed to make a slide motion inside thereof and is constituted such that it is able to switch the state in which the suction side path is cut off from the suction source side path to the state in which the suction side path is in communication with the suction source side path or vice versa in correspondence with the position of the valve member in the valve casing, wherein a groove is formed in the outer peripheral surface of the valve member in contact with the inside of the valve casing.

Abstract: A portable endoscope having a probe which is inserted into a human body, comprises a tank, a flexible tube, a pump, and a weight. The flexible tube is provided to supply liquid to the tip of the probe from the tank via a connection and a nozzle. The weight is provided to bend the flexible tube so that one end of the flexible tube, inside the tank, reaches the liquid regardless of the angle of inclination. A liquid and air supply unit for the endoscope is provided with the tank which stores liquid or cleansing water.

Abstract: A fluid delivery adapter unit for selectively connecting fluid supply equipments to an endoscope comprises a straight pipe capable of being detachably coupled to a fluid inlet collet of a headpiece of the endoscope and a generally L-shaped elbow pipe having a lure lock component at a proximal end to which the fluid supply equipment is coupled. A joining structure is installed between the elbow pipe and the straight pipe so as to allow the elbow pipe and the straight pipe to turn through a predetermined angle relative to each other only when the elbow pipe is forced to turn and further to keep them in a turned position while the elbow pipe is unforced. The joining structure comprises principally involves an elastic sealing member to provide fluid tight seal between the elbow pipe and the straight pipe.

Abstract: A wireless endoscope unit includes an RF transmitter for transmitting and receiving signals via an antenna, and an arrangement for taking individual images of the surroundings. These images are then transferred via the RF transmitter to an external image processing unit. In this case, a control serves for executing control commands received via the RF receiver. A dye container is included for keeping a dye and an exit opening, connected to the dye container, is for implementing the dye in tissue in accordance with the control commands of the control.

Abstract: The invention relates to medical instruments for the operation in patient's body cavity with the visualization of internal organs. The instrument has an original cleaning system, which includes a gas nozzle supplying a gas jet onto the optical surface under high pressure. This pressure is sufficient to enable the gas jet to be a single cleaning means for cleaning the optical surface in all clinical instances. A safety means prevents the patient's internal organs from barotrauma by the gas jet und includes a gas jet catcher and a suction pump of ejection type. The latter is arranged in the instrument's handle and can be used also for the removal of abundant secretions or body's small particles from the patient's cavity. Besides, the gas jet and the suction pump along with a control means form the system for pressure control within the patient's cavity.

Abstract: A seal for laparoscopic port comprising:

Abstract: In one embodiment, an endoscope valve assembly is releasably secured to a hand of a user of an endoscope. The endoscope valve assembly can be releasably secured to any part of the user's hand (e.g., palm, thumb, or finger) and can be secured either to the hand that holds the endoscope or to the user's other hand. Additionally, when the user holds an endoscope in one hand and a second medical instrument in his other hand, the valve assembly for the endoscope can be releasably secured to the second medical instrument. Other embodiments are described, and each of the embodiments can be used alone or in combination with each other.

Abstract: A method detects proper connection of fixtures to one or more channels in an endoscope during a cleaning or disinfection procedure. The endoscope has a first opening into one of its channels. The method includes the steps of placing the endoscope at the first opening in a liquid while leaving a gas within the channel, drawing a vacuum on the gas through a second opening into the channel and thereby drawing some of the liquid into the channel, and detecting for air leaking into the channel.

Abstract: A method for carotid endarterectomy. A blood filter is positioned within a carotid artery downstream of an atheromatous plaque. The filter is expanded. The carotid artery is clamped upstream and downstream of the atheromatous plaque while the filter is expanded. An endarterectomy procedure is performed on the region of the carotid artery having the atheromatous plaque. The carotid artery is unclamped while the filter is expanded. In certain cases a shunt is positioned in a region of the carotid artery having the atheromatous plaque and secured to the shunt by clamping, the shunt comprising a tubular member having a proximal opening, a distal opening, and a lumen therebetween.

Abstract: An air feeding device for an endoscope, is provided with a pressure control system that controls a pressure of air within a sealed space so as to fall within a predetermined set range. The air feeding device is further provided with an abnormal condition detecting system that detects an abnormal condition of at least one of the pressure within the sealed space and control of the pressure control system. Further, the air feeding device includes a resolving system that resolves the abnormal condition when the abnormal condition detecting system detects an abnormal condition.

Abstract: In one embodiment, an endoscope valve assembly is releasably secured to a hand of a user of an endoscope. The endoscope valve assembly can be releasably secured to any part of the user's hand (e.g., palm, thumb, or finger) and can be secured either to the hand that holds the endoscope or to the user's other hand. Additionally, when the user holds an endoscope in one hand and a second medical instrument in his other hand, the valve assembly for the endoscope can be releasably secured to the second medical instrument. Other embodiments are described, and each of the embodiments can be used alone or in combination with each other.

Abstract: A modular endoscope valve assembly is releasably mounted on the handpiece of an endoscope. This valve assembly includes an inlet port, an outlet port, and a valve manually operable selectively to block and to allow the flow of irrigation fluid from the inlet port to the outlet port. The valve assembly is releasably held to the handpiece of the endoscope by a mechanical fastener such as a pressure-sensitive adhesive, a strap, a snap lock, or otherwise. Once the valve assembly is releasably mounted to the handpiece, the physician using the endoscope can manually control the flow of irrigation fluid, and optionally suction, with the same hand as the one that supports the handpiece, thereby leaving the other hand of the physician free for surgical procedures. The modular valve assembly of this invention can be used with the widest variety of endoscopes, including flexible, rigid and semi rigid ureteroscopes as well as various percutaneous endoscopes.

Abstract: In an endoscope apparatus, an air/water switch (15) that is provided in an operating section (9) of an endoscope (5) each generate an air feed on/off signal and a suction on/off signal, and air feed flow and suction flow signals that are responsive to the amount of depression of each of the switches, these signals being sent to a signal processing circuit (33). The signal processing circuit (33) controls a air/water feed control valve 40 and a suction force control valve 50, so as to control air/water feed flow and suction flow, a flow display being made by an indicator (65) on the screen (63) of a TV monitor (35).

Abstract: An endoscope seal that effectively inhibits the egress of fluids from the working channel of an endoscope when an elongate device having a non-circular shaft is disposed therein. The endoscope seal includes a body portion having a proximal end adapted for insertion of an elongate device such as a rapid exchange biliary catheter, a distal end adapted for connection to the proximal end of an endoscope, a lumen extending therethrough which is adapted to receive the elongate device and to provide access to the working channel of the endoscope, and a means for conforming to the non-circular shaft of the elongate device to inhibit the flow of fluid from the working channel of the endoscope. The conforming means may, for example, comprise one or more protrusions extending radially inward in the lumen of the body portion, a sealing material such as a surgical foam that is disposed in the lumen of the body portion, or a sealing mandrel.

Abstract: A suction valve for an endoscope use includes a valve casing which is set up in the control portion of an endoscope and is connected with a suction side path having an opening as a suction inlet at the tip distal end of the insertion portion of the endoscope and is also connected with a suction source side path connected with a negative pressure generation source, and a valve member which is fitted up in the valve casing to be allowed to make a slide motion inside thereof and is constituted such that it is able to switch the state in which the suction side path is cut off from the suction source side path to the state in which the suction side path is in communication with the suction source side path or vice versa in correspondence with the position of the valve member in the valve casing, wherein a groove is formed in the outer peripheral surface of the valve member in contact with the inside of the valve casing.

Abstract: A suction valve for an instrument includes a valve insert secured in a valve housing. A first sleeve connects the interior of the valve housing to a first suction channel of the instrument; and a sealing membrane seals a first portion of the interior of the valve housing from the valve insert. The sealing membrane is fixed in the valve housing by the valve insert that includes a valve plunger for opening and closing the sealing membrane by movement in a first direction.

Abstract: The present invention provides a system for endoscopes which can supply air and water according to each application by regulating air and water flow rates independently. Although air and water may be supplied with one pump, the present invention controls air and water flow rates separately by using an air supply pump and water supply pump and by controlling a plurality of open-close valves installed, for example, on atmospheric escape pipes. The air channel and water channel are connected, for draining, by a first connecting pipe. If the air supply pump is used also for water supply and the water supply pump is used also for air supply, it is possible to supply air and water at a high flow rate fast enough even for high-speed water injection. If a fixed flow rate is used for a specified time at the start, specific operations can be simplified.