Abstract: An irrigator handle to be used with a water jet apparatus for cleaning gums and teeth includes a visual indicator to let a user know when a tip has been properly attached to the handle. The handle in some embodiments also includes an audible indicator to let the user know when the tip has been properly attached. The handle has a pause button attached to plunger to restrict water flow when the pause button is depressed.

Abstract: A device (10) for debridement of dental implants, which are arranged into bone tissue and are surrounded by gingiva of a jaw of a human being, has a debriding element (11) and an axle (12) with a fastener (13) for attachment to a rotational apparatus The debriding element (11) has at least one cleaning leg (20) with at least one cutting edge for engagement with the implant, the gingiva and/or the bone tissue According to a second embodiment the debriding element has several portions each having said cleaning leg (20) and the portions are connected to each other Said cleaning leg (20) has a free end (21) shaped as a hook (30) with a point (31), which is provided with said cutting edge The device (10) may have several cleaning legs (20), each provided with several cutting edges A method for cleaning and abrasion of dental implants and implant sites are provided, which uses the device (10) for abrasion and cleaning.

Abstract: The present invention relates to a disposable dental instrument used by dental professionals to polish a patient's teeth. The dental instrument can be connected to a hand motor used to rotate a prophy cup with a plurality of grinding wings that rub against the patient's teeth as a predetermined amount of tooth cleaning fluid is discharged directly on the patient's teeth through a drain hole within the prophy cup. The tooth cleaning fluid is discharged from a tube that is assembled in a tube room of the dental instrument. The tube is a flexible bladder similar in function and form to a tube of toothpaste. The tube is made of a flexible polymer material that allows it to be squeezed when pressure is applied to it. A roller is assembled within the tube room and on top of the tube. As the roller is pushed forward with a finger, the tube is squeezed to discharge the tooth cleaning fluid directly on the patient's teeth.

Abstract: A coupling with a built-in light source for use with a handpiece body is disclosed. The coupling has a body-side connecting part to be connected to a handpiece body, a hose-side connecting part to be connected to a hose for delivering fluids, the hose-side connecting part connecting to the proximal end of the body-side connecting part, fluid channels extending through the body-side and hose-side connecting parts for communicating fluid lines in the handpiece body with the hose, and a light source disposed in the body-side or hose-side connecting part. The light source is an LED lighting device including light-emitting means having an LED chip, and a circuit board electrically connected to the light-emitting means for controlling the voltage supplied to the LED chip. The circuit board is placed in the body-side or hose-side connecting part.

Abstract: The dental handpiece of a center-injection type has a bur sleeve (8, 9) having an axial through hole capable of receiving and detachably holding therein a cutting bur having an axial through hole, upper and lower bearings (10, 11) for rotatably supporting the bur sleeve (8, 9), and an injection nozzle (5) capable of being inserted into the axial through hole of the cutting bur from its proximal end for injecting cooling water through the other end. The dental handpiece (1) further has an upper seal means (17) arranged to seal the space between the upper region of the bur sleeve (8, 9) and the upper bearing (10), and a lower seal means (17?9 arranged to seal the space between the lower region of the bur sleeve (8, 9) and the lower bearing (11).

Abstract: A device for treating a dental tissue with a continuous flow of ozone containing gas, comprising (a) an ozone generator (2) for generating an ozone containing gas, (b) a first pump (1) being in fluid flow communication with the ozone generator for generating a flow of ozone containing gas, (c) an applicator (3) for multiple teeth having a surface suitable for forming with the hard and soft dental tissue of multiple teeth to be treated a treatment chamber having an inlet orifice being in fluid flow communication with the ozone generator (2) and the first pump (1) and having an outlet orifice, and (d) a second pump (5) being in fluid flow communication with the outlet orifice of the applicator (3) for removing gas from the treatment chamber, whereby said second pump (5) has a second throughput and the first pump (1) has a first throughput whereby the ratio of the second throughput to the first throughput is at least 1.5:1.

Abstract: A dental implant installation procedure is provided in which a distal end of a dental implant is projected into a paranasal sinus cavity or a nasal cavity to thereby displace the respective sinus membrane or nasal cavity membrane from the respective cavity floor, while minimizing risk of damaging the respective membrane. Bone graft material is introduced into the space thereby created between the respective membrane and the respective cavity floor via a distal portion of the dental implant to thereby form a desired sinus augmentation.

Abstract: The present invention discloses a self-contained dental prophylaxis angle with a separate therapeutic content lumen and drive shaft lumen. The phrophylaxis angle also provides an offset rotational axis and methods for its use in cleaning, polishing, bleaching, bonding, etching, abrading, desensitizing, or otherwise treating teeth. An offset drive system is provided to power rotation of the dental tip in a system that can be physically separated from the storage and dispensing system for therapeutic content. A self-contained dental prophylaxis angle with an offset rotational axis according to the present invention may be used with a variety of shaped dental tips of varying degrees of rigidity, according the needs of a given clinical application.

Abstract: The present invention relates to a medical handset with a nozzle having at least one nozzle line for supplying a medically active medium, such as for example an air-powder mixture and/or a fluid, in particular for the prophylactic treatment of teeth, wherein the handset has a head part with a connecting part on the head for the exchangeable connection of the handset to the nozzle, wherein at least one supply line of the handset is connected to the at least one nozzle line of the nozzle by producing a sealing-tight interference fit of a sealing face on the nozzle with a sealing face on the handle, in particular in that a tongue-and-groove connection is produced between the nozzle and the connecting part, e.g. in that a T-groove on the nozzle is inserted into a T-tongue on the handle, the axis of insertion lying roughly at right angles to the longitudinal axis of the handset.

Abstract: A bone cutting and injecting device for cutting maxillary bone and injecting a filler through the maxillary bone under a subantral membrane to separate the subantral membrane from the maxillary bone and fill the space formed therebetween. The device includes a hollow tubular element having a diameter sized to be inserted into a pilot hole in the maxillary bone, a piston longitudinally displaceable within the hollow tubular element, and a cutter mounted to the piston and operably disposed adjacent the distal end of the hollow tubular element. A fluid path is defined through the hollow tubular element for guiding the filler, and the cutter is configured to redirect the filler in a transverse or radial direction relative to the longitudinal axis of the tubular element.

Abstract: Tool and method for creating a perforation or cavity in a bone or bone structure in contact with a membrane, the tool including a drill having a free end and a channel adapted for supplying a liquid under pressure to the free end, the tool further including a source of the liquid under pressure such that the liquid flows partially into and through the bone or bone structure toward the membrane while drilling the bone or bone structure with the drill, which allows to perform a progressive detachment of the membrane when the drill is close to the membrane while still being inside the bone or bone structure, and before completely piercing the bone or bone structure.

Abstract: In a dental treatment instrument with an elongate grip sleeve, a drive unit arranged in the grip sleeve, and a coupling device which is located at the front end of the grip sleeve and with which a movement generated by the drive unit is transferred to a treatment tool to be connected releasably to the treatment instrument, the coupling device is designed like a sleeve and has a first section for receiving a tapering peg-like coupling area of the tool shaft, and a second section which also interacts with the tool shaft to provide a securing means acting in the axial direction, wherein the length of the first section of the coupling device is at least as great as the length of the second section.

Abstract: The interface structure includes a handle portion (12) having separate supply lines for gas and liquid, and a head portion (18) also having separate supply lines for gas and liquid, wherein the upper surface of the handle portion is configured relative to the lower surface of the head portion, with or without a separate locking member, that the gas and liquid lines in the handle connect in a fluid-sealing relationship with the gas and liquid lines in the head as the head portion is operatively positioned on the handle portion.

Abstract: A hand-held dental instrument is used for supporting a working tool and driving it according to a relative movement, including at least first fluid conveying means for conveying fluids through a body from the proximal end of the body towards fluid projection means. The first fluid conveying means include an upstream fluid conveying channel, a downstream fluid conveying channel, as well as a fluid collection radial chamber provided in the body between the upstream fluid conveying channel and the downstream fluid conveying channel. A filtration pin is mounted in the fluid collection radial chamber with a clearance allowing for the through-flow and the filtration of the fluids between the upstream fluid conveying channel and the downstream fluid conveying channel.

Abstract: An oral solution dispenser apparatus for attachment to a powered toothbrush handle having a drive coupling mounted thereon, includes a housing adapted for attachment to the handle, the housing having a recess therein for receiving a cartridge containing the oral solution, a pump disposed in the housing for moving the oral solution from the cartridge, and an outlet nozzle extending from the housing and adapted to permit movement of the oral solution from the pump and from the housing. A head having bristles thereon is adapted to interconnect with the handle drive coupling and the housing outlet nozzle, to facilitate powered movement of the bristles and movement of the oral solution from the outlet nozzle to proximate the bristles.

Abstract: A disposable prophy angle with an accessible and replaceable internal collapsible prophylaxis bladder and a push button and plunger/paddle combination to force a metered amount of prophylaxis medium into the prophy angle while providing audible and/or tactile feedback.

Abstract: The invention relates to a cleaning container (12) comprising an inlet (120) which is connected to the water container (11), and an outlet for connecting a suction tube (43), the outlet (122) being embodied as a hydrant (124) for a suction handpiece (42) applied to the suction tube (43). The cleaning container (12) can be filled with the water from the water container (11) especially by means of a negative pressure applied to the outlet when the suction tube (43) is connected.

Abstract: An apparatus (7) for localised application of a substance to a site within the oral cavity has a reservoir (9) for receipt of the substance to be applied, and a mounting arrangement (11) a for mounting the apparatus within the oral cavity. The mounting arrangement (11) is configured to place the reservoir (9) in contact with the site to which the substance is to be applied to substantially form a seal between the reservoir and the site to which the substance is to be applied.

Abstract: An adapter (1) for cleaning a medical appliance comprises a fluid channel (2) with an inlet (3) and at least one outlet (4.1), at least one outlet being provided with a coupling means (5.1) for an opening of a medical device. The coupling means (5.1) is designed as a single-use coupling which, after the medical device has been coupled for the first time, generates a leak in the fluid channel at the time of uncoupling. This ensures totally hygienic cleaning of medical devices.

Abstract: An oral care implement has a head portion with tooth cleaning elements on one surface thereof and a reservoir containing at least one active agent. A capillary channel extends through at least a portion of the oral care implement to deliver active agent(s) to one or more outlets. In one aspect, a vibration-producing device is provided to vibrate at least a portion of the implement to enhance the function of tooth cleaning elements and the delivery of the active agent through capillary action. A variety of active agents can be administered for therapeutic, hygienic, and/or other benefits, such as fresh breath, tooth whitening, or producing sensations of heat, cool, or tingling.

Abstract: An oral solution dispenser apparatus for attachment to a powered toothbrush handle having a drive coupling mounted thereon, includes a housing adapted for attachment to the handle, the housing having a recess therein for receiving a cartridge containing the oral solution, a pump disposed in the housing for moving the oral solution from the cartridge, and an outlet nozzle extending from the housing and adapted to permit movement of the oral solution from the pump and from the housing. A head having bristles thereon is adapted to interconnect with the handle drive coupling and the housing outlet nozzle, to facilitate powered movement of the bristles and movement of the oral solution from the outlet nozzle to proximate the bristles.

Abstract: The present invention discloses an auxiliary cooling water supplier for a dental implant device, which comprises a main machine having a built-in water-supply module, a conduit, an outlet module, a flowrate control circuit and a pedal. The main machine further comprises a control unit; the control unit is connected to the flowrate control circuit, and the flowrate control circuit is connected to the water-supply module. The user can use the control unit to regulate the flowrate of the outlet module or to switch between an automatic water-supply mode and a pedal control mode. The auxiliary cooling water supplier for a dental implant device of the present invention has the advantages of lightweight, portability, maneuverability, simple structure and easy operation.

Abstract: A dental cleaning attachment for a dental handpiece which comprises a disposable prophy angle having a neck and a right angle head, wherein the neck is removably attached to the dental handpiece. A polishing cup is rotatably connected to the head of the prophy angle. An encompassing toroidal pouch has a tube fluidly formed to and extending from the toroidal pouch. The tube runs externally along a top surface of the neck, is bent at a right angle, goes through a rear aperture in the head of the prophy angle and into a top aperture in the polishing cup. A paste material is carried within the toroidal pouch, the tube and the polishing cup. When the dental handpiece is gripped by a hand of a dental hygienist and the polishing cup is applied to a tooth, any finger of the hand of the dental hygienist can squeeze the toroidal pouch to force some of the paste material through the tube and out of the polishing cup, so that the paste material can be applied onto the tooth for cleaning.

Abstract: An instrument for periodontal treatment includes a blade (1) which is integrally connected to a head (2). The head (2) can be coupled to a handpiece to impart a vibratory movement to the blade (1). The blade (1) has an active part (1 a) distributed along the blade (1) on a side defined by a plane passing through the axis of the blade (1). The center of the blade (1) is additionally provided with an irrigation channel (4) for receiving a liquid which opens out at the center of the active part (1 a) of the blade (1) along the major part of its length. This ensures, on the one hand, cleaning of the active part (1 a) of the tool during a procedure, and on the other hand, removal of the detached particles.

Abstract: An optical conduit is bundled with one or more fluid carrying conduits such that the bundled conduits are axially aligned near their distal ends. Light and fluid emitted from orifices at the terminal ends of the conduits are emitted along substantially coaxial paths. A ferrule is preferably used to bundle the conduits together at the distal ends of the conduits, and elsewhere along their combined lengths if desired. The fluid conduit may comprise an outer tube and a smaller coaxial inner tube, one tube for delivering a first fluid and the other tube for delivering a second fluid. The optical conduit comprises optical fibers for delivering light through the end of the bundle. Because the conduits are bundled near the distal ends of the aligned tubes, the light and fluid delivered through the conduits are precisely aimed at the intended point.

Abstract: A prophy angle comprising a body, a drive system, and a paste feed assembly. The body includes a cylinder and a head portion associated with the cylinder. The drive system extends through the body and includes a drive shaft assembly and a cup shaft assembly. The drive shaft assembly extends through the cylinder. The cup shaft assembly extends through the head portion. The cup shaft assembly is coupled to the drive shaft assembly and further includes a prophy cup disposed at one end thereof. The prophy cup is in fluid communication with the body. The paste feed assembly includes a piston assembly and a piston movement assembly. The piston movement assembly includes a handle member. The handle member includes a second end associated with the piston assembly, a first end distally spaced therefrom and a pivot point positioned therebetween.

Abstract: The present invention discloses a self-contained dental prophylaxis angle with an offset rotational axis and methods for its use in cleaning, polishing, bleaching, bonding, etching, abrading, desensitizing, or otherwise treating teeth. Therapeutic content, such as dentifrice, is contained within the inventive prophylaxis angle, and is dispensed subject to operator control during use of the prophylaxis angle. An offset drive system is provided to power rotation of the dental tip in a system that can be physically separated from the storage and dispensing system for therapeutic content. A self-contained dental prophylaxis angle with an offset rotational axis according to the present invention may be used with a variety of shaped dental tips of varying degrees of rigidity, according the needs of a given clinical application.

Abstract: A device for feeding a treatment liquid into medical appliances. The device includes an outlet opening for the treatment liquid, especially for feeding water into dental equipment, a feed line for the treatment liquid, means to introduce degerminating agents into the treatment liquid, and an on/off valve disposed upstream from an outlet opening onto which the feed line is connected. A back-flush valve is connected to the on/off valve, and a reservoir is provided for the treatment liquid, whereby the treatment liquid is transported from the reservoir with the aid of a pump. Further, a back-flush line is connectible alternatively via a drain valve to a drain or to the reservoir so that the treatment liquid is pumped into the drain, or in circulation from the reservoir through the feed line to the switch valve and through the back-flush line again into the reservoir.

Abstract: A dental handpiece for applying dental material to polish a tooth. The handpiece includes a conduit and a plunger for dispensing dental material adjacent a polishing member. The plunger and the polishing member can be controlled by a drive member, which may move in both a forward and reverse direction.

Abstract: A method for preventing tooth decay by initially treating the tooth surface with a laser with a coherent or noncoherent light source. This process makes the tooth more resistant to acid and more able to bond fluoride, thus requiring a lower concentration of fluoride. The method allows for a deeper penetration of the tooth then previously accomplished with other methods.

Abstract: The invention relates to a medical or dental-medical treatment instrument (1) having a media line, in particular for water or spray, extending from its rearward end to its forward end region, in which line an exchangeable filter element (21) is arranged. In order to reduce the flow resistance of the filter element (21), while providing a small cross-sectional size, the filter element (21) has the form of a sleeve and the direction of passage of the medium is directed transversely to the sleeve wall (21a).

Abstract: A dental handpiece having a filter unit containing a filter that minimizes the exposure of patients to pathogens found in the dental unit water lines (DUWL) while promoting frequent replacement of DUWL filters, by providing a disposable microfiltration filter that is easily replaced at low cost. A disk or membrane type filter is placed in a disconnectable autoclavable filter unit in the handle of an existing design dental instrument such that the form and function of the dental instrument are not adversely affected. The components of the handpiece, including the filter unit, are autoclavable, making the handpiece with its filter unit both economical to produce and ideal for its intended use.

Abstract: A dental handpiece for applying dental material to polish a tooth. The handpiece includes a conduit and a plunger for dispensing dental material adjacent a polishing member. The plunger and the polishing member can be controlled by a drive means, which may move in both a forward and reverse direction.

Abstract: The present invention provides a portable dental system for use in areas having inadequate sources of power, either for human or for veterinary dentistry. The system provides one or more handpieces, each driven driven by a pressurized nitrogen gas contained in a portable tank. A water reservoir is also provided for medicated water to be applied to the tooth site. The system has two channels to which either a conventional dental handpiece or an abrasive handpiece can be attached. When two abrasive handpieces are attached, two different abrasive materials may be used by the system, one material for cleaning and one material for cutting or abrading.

Abstract: A handle for a dental tool has a sleeve having a first end provided with a head and having a second end. An air turbine, for driving a tool, is arranged in the head of the sleeve. A connector is connected to the second end of the sleeve and is to be attach to a supply hose or an intermediate member. At least one driving air conduit for supplying driving air to the air turbine is provided. The at least one driving air conduit has a conduit end. An insert member is inserted into the sleeve and positioned proximal to the head of the sleeve. The conduit end of the at least one driving air conduit is arranged in the insert member.

Abstract: A prophy angle comprising a body, a drive system, and a paste feed assembly. The body includes a cylinder and a head portion associated with the cylinder. The drive system extends through the body and includes a drive shaft assembly and a cup shaft assembly. The drive shaft assembly extends through the cylinder. The cup shaft assembly extends through the head portion. The cup shaft assembly is coupled to the drive shaft assembly and further includes a prophy cup disposed at one end thereof. The prophy cup is in fluid communication with the body. The paste feed assembly includes a piston assembly and a piston movement assembly. The piston movement assembly includes a handle member. The handle member includes a second end associated with the piston assembly, a first end distally spaced therefrom and a pivot point positioned therebetween.

Abstract: The invention relates to a medical or dental-medical treatment (3) which at its rearward end has a coupling element (7) for coupling on to a matching coupling element (8) of a flexible supply line (2a), and in its forward region has a holder device (5) for a tool, the handpiece (3) being of a rearward and a forward handpiece section (3a, 3b) which are connected with one another by means of a plug-in connection (17) and are fixed on one another by means of a latching device (72) which has a latching arm (75) extending approximately axis-parallel and which is transversely elastically bendable, which latching arm is arranged on the one plug-in connection part (77) and is latched in its free end region with a latching element (76) arranged on the other plug-in connection part (80).

Abstract: An oral irrigator including a main body and a brush assembly. The main body has an elongated shaft, a connector connected to the elongated shaft, and a receiving cavity connected to the neck for receiving and retaining a brush assembly. The oral irrigator is adapted to work in conjunction with a mechanism for providing pressurized liquid (e.g. a pump).

Abstract: A system and method for dispensing prophylaxis paste during dental cleaning procedures which includes a flow control valve, which is actuated by pressure between the prophy cup and the tooth, and also includes a source of prophylaxis paste delivered under pressure.

Abstract: The present invention provides an Ultraviolet apparatus or system for delivering substantially pure compressed air to desired locations. The invention is particularly useful for delivering substantially pure compressed air to dental unit handpieces and instruments. The invention provides a dental chair unit including apparatus for delivering substantially pure 99.9% compressed air and method for delivering substantially pure compressed air to a dental handpieces, other medical applications and also in industrial automotive assemblies with pneumatic tools.

Abstract: An optical conduit is bundled with one or more fluid carrying conduits such that the bundled conduits are axially aligned near their distal ends. Light and fluid emitted from orifices at the terminal ends of the conduits are emitted along substantially coaxial paths. A ferrule is preferably used to bundle the conduits together at the distal ends of the conduits, and elsewhere along their combined lengths if desired. The fluid conduit may comprise an outer tube and a smaller coaxial inner tube, one tube for delivering a first fluid and the other tube for delivering a second fluid. The optical conduit comprises optical fibers for delivering light through the end of the bundle. Because the conduits are bundled near the distal ends of the aligned tubes, the light and fluid delivered through the conduits are precisely aimed at the intended point.

Abstract: A method for sterilizing conduits that convey fluid from a main water source to medical instruments, especially dental handpieces includes removing at least the end portions of supply branches of the handpieces from their respective rest positions and placing them in a container. A disinfectant liquid is introduced into each of the supply branches for a predetermined time. The sterilization liquid is drained out of the supply branches by flushing the inside of the supply branches with a sterile fluid supplied through a second branch independent of the main water source.

Abstract: An optical conduit is bundled with one or more fluid carrying conduits such that the bundled conduits are axially aligned near their distal ends. Light and fluid emitted from orifices at the terminal ends of said conduits are emitted along substantially coaxial paths. A ferrule is preferably used to bundle the conduits together at the distal ends of the conduits, and elsewhere along their combined lengths if desired. The fluid conduit may comprise an outer tube and a smaller coaxial inner tube, one tube for delivering a first fluid and the other tube for delivering a second fluid. The optical conduit comprises optical fibers for delivering light through the end of the bundle.

Abstract: Methods and apparatus are presented for extracting and collecting bone material from an extraction site of a patient. The method and apparatus further provides a readily accessible, and easily harvested, source of bone material without the drawbacks of current extraction methods.

Abstract: A dental cleaning implement comprising: a handpiece graspable at one end by a user, an oscillating drive within the handpiece, a head located at the opposite end of the handpiece which includes a coupler for releasably attaching a toothpick or an interdental toothbrush thereto. The oscillating drive is adapted to provide oscillations of up to 15,000 strokes per second, preferably from 1 to 5,000 strokes per second, and the implement may optionally further comprise a selector for varying the frequency of oscillation.

Abstract: A filtering device is applicable to supply conduits for handpieces, the conduits comprising: at least one a first channel that supplies an operating fluid to the handpiece; the handpiece being equipped with a second channel for the passage of fluid; there being connecting means operating between the first channel and the second channel at the ends of the supply conduit and of the handpiece, respectively; and two-way fluid filtering means being fitted to the connecting means between the conduit and the handpiece.

Abstract: Apparatus and method for catheterized delivery or infusion of medication and anaesthesia are disclosed. The perforating catheter is first used to perforate the periodontal ligament and/or the cortical plate of bone tissue, and is then left in place and used as a catheter for insertion of a hypodermic needle of smaller gauge to deliver medication or anaesthesia to a target area. The perforator is a bevelled needle for drilling into the ligament or bone tissue. For drilling, the device comprises an adaptor which transmits the rotational movement from a dental hand piece to the bevelled needle. A cap is also included for protecting the bevelled needle during storage of the device. The adaptor may have a rod which extends axially into the bevelled needle when the device is assembled for drilling. The rod is used to prevent the debris resulting from drilling from blocking the passage in the bevelled needle.

Abstract: A prophylactic system 100 for a dental hand piece 101 of a selected shape and having an outlet 112 for providing a fluid to an operating field is disclosed. A cover 102 has a shape substantially similar to the hand piece 101 for enclosing the dental hand piece 101 and includes an aperture 118 for communicating with the operating field. An s-shaped valve 600 includes a path 605 for coupling the fluid from outlet 118 of the hand piece 101 to the aperture 118 of the cover.

Abstract: The invention relates to a medical or dental-medical treatment instrument (1) having a media line, in particular for water or spray, extending from its rearward end to its forward end region, in which line an exchangeable filter element (21) is arranged. In order to reduce the flow resistance of the filter element (21), while providing a small cross-sectional size, the filter element (21) has the form of a sleeve and the direction of passage of the medium is directed transversely to the sleeve wall (21a).

Abstract: In a medicinal or dental hand instrument (1) comprising a hand piece (2) and a handle (6) arranged on the hand piece (2), an outlet opening (5), arranged on the front side of the handle (6), for the outlet of an abrasive therapeutic agent and a transport fluid, and a coupling terminal (4) for coupling the hand instrument (1) to a supply line for at least one transport fluid, in particular water and/or air, wherein the coupling terminal (4) is a coupling component (14b) of a coupling (13), the coupling component (14b) is arranged on an insert piece (20) which can be plugged into a plug-in socket or plug-in recess (19) and in its end zone, facing away from the flow, has one or more coaxially or paraxially disposed, sealed pipe socket couplings (10), which each connect a feed line (9, 11) for the transport fluid to an ongoing feed line (21, 22).