29 results about "Cannula device" patented technology

The utility model relates to the technical field of medical surgical instruments, and discloses a locking piece type laparoscope cannula device which comprises a laparoscope sheath tube, a fixing seat and a locking mechanism. A through hole is formed in the fixing base in the axial direction, and one end of the endoscope sheath tube is connected to one end of the fixing base and is communicated with the through hole in an aligned mode. The locking mechanism is arranged at the other end of the fixing base and comprises a shell and a locking assembly, a containing cavity is formed in the shell, a mounting hole is formed in the shell, the locking assembly comprises a plurality of locking blocks annularly arranged in the containing cavity in the circumferential direction of the mounting hole, and a locking hole is formed among the locking blocks; the laparoscope sequentially penetrates through the mounting hole, the lock hole and the through hole and then is sleeved with the laparoscope sheath tube, the multiple lock blocks can be close to or away from one another, so that the lock hole becomes larger or smaller, and the laparoscope is clamped or loosened by the multiple lock blocks. The technical problem that in the prior art, a laparoscope cannula is poor in universality is solved, the service life of a laparoscope can be prolonged, and the assembling efficiency is high.

The utility model discloses a variable-diameter expansion puncture cannula device, which belongs to the technical field of medical equipment and comprises an air closed valve cover, an expansion variable-diameter main body, an inner fixing support, a variable-diameter support and a variable-diameter rubber sleeve. The inner fixing support and the bottom wall of the expansion variable-diameter body sequentially penetrate to form a through hole, and a plurality of grooves are formed in the bottom wall of the inner fixing support in the circumferential direction. The variable-diameter support is defined by a plurality of variable-diameter pieces, and each variable-diameter piece comprises a fixing part and an expanding part. And after one end of the reducing rubber sleeve is fixed in the expansion reducing main body, the other end of the reducing rubber sleeve extends out of the expansion reducing main body from the through hole and covers the peripheries of the expansion parts. The expansion part of the puncture cannula device is composed of a plurality of variable-diameter pieces and a variable-diameter rubber sleeve wrapping the variable-diameter support. Due to the fact that the variable-diameter support and the variable-diameter rubber sleeve are arranged in a split mode, the puncture cannula can play a rigid role of the variable-diameter support and a flexible role of the variable-diameter rubber sleeve at the same time, and the application range of the puncture cannula device is enlarged.

The invention provides a material guiding device, pipe inserting equipment and an air conditioner, the material guiding device is used for the air conditioner, the air conditioner comprises a to-be-inserted pipe, the to-be-inserted pipe comprises a pipe body and at least two connecting pieces, the pipe body comprises at least two pipe supporting legs, the at least two connecting pieces are arranged on the at least two pipe supporting legs in a sleeving mode respectively, and the material guiding device comprises a base, the base is provided with a material guiding channel and a material guiding opening which are communicated with each other, and the at least two pipe supporting legs extend into the material guiding channel through the material guiding opening; the limiting surface is arranged on the base and located at the material guiding opening, and based on the fact that the at least two connecting pieces make contact with the limiting surface and the distance exists between the at least two pipe supporting legs and the bottom wall of the material guiding channel, whether the connecting pieces are not arranged on the to-be-inserted pipe or not can be indirectly detected, and the problem that the incoming material state cannot be effectively recognized through manual pipe insertion is solved; and the quality control effect is improved, and the automatic production requirement can be met.

Systems and methods for minimally invasive computer-assisted telesurgery are described. For example, this disclosure describes cannula devices for use with computer-assisted teleoperated surgery systems. The cannula devices can facilitate enlargement of a minimally invasive surgical workspace by creating a tissue tent. The devices and methods described herein can be used in conjunction with computer-assisted teleoperated surgery systems that use either hardware-constrained remote centers of motion or software-constrained remote centers of motion.

Provided are kyphoplasty cannula devices and device systems that include an outer sheath including a main body defining a through-opening extending therethrough, and an outer sheath handle above the main body, the outer sheath handle having a handle opening through at least one end thereof, the outer sheath handle also having a top opening that is contiguous with the through-opening of the main body; and an inner stylet configured to be insertable into the top opening of the outer sheath handle and into the through-opening of the main body. The present systems may also include a plug to plug the top opening after removal of the inner stylet. Also provided are kits and methods of using the present devices and sytems.

This invention discloses a transplantation cannula device and its method of use for precisely controlling the aspiration dosage of culture medium. It includes a syringe, a push-pull component, a three-way valve, a rigid tubing, and a flexible tubing. The push-pull component is slidably connected to the inner wall of the syringe. An aspiration head is located at the head of the syringe, and a syringe handle is located on the opposite side of the tail end. Five axially arranged annular limiting grooves are formed on the inner wall of the syringe. The push-pull component includes a rubber piston, an elastic positioning component, and a push-pull handle connected sequentially along the axial direction. The elastic positioning component has a radial elastic direction, and its radial outer end is used to engage with the annular limiting grooves. The aspiration head is detachably connected to one port of the three-way valve, and the other port of the three-way valve is detachably connected to the injection channel. The other port of the three-way valve is detachably connected to the aspiration tubing. This facilitates the sequential introduction of culture medium, air, a mixture of culture medium and embryo, air, and culture medium into the syringe via the aspiration tubing.

The invention relates to the technical field of tracheal intubation, in particular to a bedside ultrasonic laryngeal edema and aspiration prevention tracheal intubation device which comprises an intubation component, the lower end of the intubation component is connected with an intubation head component, and a visual laryngoscope and a plurality of miniature ultrasonic probes are mounted on the intubation head component. According to the application, medicines such as glucocorticoid in the medicine temporary storage bin can be accurately atomized and conveyed to the periphery of the glottis under the action of the micro piezoelectric atomization piece, continuous low-negative-pressure suction can be performed on the upper gap of the glottis through the micro diaphragm pump according to feedback of the pressure sensing assembly, retentate on a capsule is effectively removed, and aspiration and related pneumonia are prevented; by means of fusion of ultrasonic image features and multi-sensor data, the risk of laryngeal edema can be intelligently judged, starting and stopping of atomization drug delivery and negative pressure suction of the miniature diaphragm pump are automatically controlled in a linkage mode, full-process closed-loop management from intubation positioning, intraoperative protection to intervention before tube drawing is achieved, and the risk of complications related to tracheal intubation is remarkably reduced.

The utility model provides a movable trachea cannula device. The movable trachea cannula device comprises a fixing mechanism and a wearing mechanism. The fixing mechanism comprises a catheter fixator, a centralizing sleeve and a silicon rubber sleeve, the centralizing sleeve and the silicon rubber sleeve are both installed in the catheter fixator in a sliding mode, and first sliding grooves are symmetrically formed in one side of the catheter fixator; the wearing mechanism comprises a face fixator and a fixing frame, the fixing frame is arranged on one side of the face fixator, and a strip-shaped groove is integrally formed in the fixing frame; the first sliding block slides in the first sliding groove, so that the first sliding block drives the centralizing sleeve and the silicon rubber sleeve to move respectively, the centralizing sleeve and the silicon rubber sleeve can be conveniently moved out of the catheter fixator when needed, and therefore the contact area of the catheter fixator and a trachea cannula is increased; the trachea cannula in the catheter fixator is centralized through the centralizing sleeve and the silicon rubber sleeve, so that the trachea cannula is prevented from shaking due to accidental collision or pulling, and the trachea cannula is more stable.

The utility model discloses a variable diameter expansion puncture sleeve device relates to medical instrument technical field, including air closing valve cover, the inner wall fixed mounting of spacing frame has fixed part limit component, the inner wall bottom fixed mounting of variable diameter fixed box has variable diameter part support seal component. The utility model discloses a variable diameter expansion puncture sleeve device, its by four variable diameter extension board composition's passage can make variable diameter expansion function by fixed part limit component, can adapt to a variety of different size's puncture needle. Through variable diameter part support seal component can utilize the pressure extrusion rubber sleeve of pressing plate and clamping frame, make rubber sleeve adhere to the bottom of four variable diameter extension board of support seat, not only can play the sealing effect, and play the support effect to four variable diameter extension board's expansion. And, when device production and processing, can first fix rubber sleeve in through -hole, then fix spacing frame and four variable diameter extension board, convenient to assemble, simple structure.

The application provides a cannula device and an endoscope, and relates to the technical field of medical devices. The cannula device comprises a cannula body, an end seat and an operation module. The cannula body is internally provided with a storage channel penetrating through the cannula body along the axial direction. The end seat is arranged at the proximal end of the cannula body corresponding to the storage channel, and the end seat is provided with a relief gap. The operation module comprises an operation rod and a module assembly. The first end of the operation rod is movably inserted into the proximal end of the storage channel and extends to the distal end of the storage channel. The second end of the operation rod is connected to the module assembly. The center line of the operation rod is eccentrically arranged with the center line of the module assembly. The module assembly is moved so that part of the module assembly is located in the relief gap, thereby reducing the shielding area of the module assembly to the proximal end of the storage channel. The cannula device reduces the outer diameter of the cannula body while not affecting the use effect.

This invention relates to a protective sleeve and a visual cannula insertion device. The protective sleeve includes: a first sleeve, which is tubular and has a channel and an insertion hole communicating with the channel. The channel is used for inserting the cannula assembly, and a lubricating medium layer is provided on the inner wall of the channel along the length of the first sleeve; and a second sleeve, which is transparent and located on the side of the first sleeve away from the insertion hole. The second sleeve has a receiving cavity communicating with the channel for receiving the probe of the cannula assembly. The protective sleeve of this application can wrap around the cannula assembly to provide protection, ensuring that the cannula body and probe are not contaminated by bacteria or viruses in the airway. Simultaneously, the lubricating medium layer within the first sleeve greatly facilitates the insertion and removal of the cannula assembly. Furthermore, the protective sleeve can be disposable and can be directly removed and disposed of as waste after surgery, thereby reducing the cleaning and disinfection work required for the cannula assembly.

The utility model relates to a trachea cannula device of multi -functional purpose belongs to medical instrument technical field, including pipe cover, sputum suction tube, sputum suction negative pressure head, oxygen pipe, oxygen connector and mounting ring, the outer peripheral wall of pipe cover is equipped with support structure, the support structure includes the threaded seat fixed mounting in the outer peripheral wall of pipe cover, the inside screw thread connection of threaded seat has the threaded rod, the right side outer wall fixed mounting of threaded rod has the hollow rod. The trachea cannula device of multi -functional purpose, through setting up the threaded seat of pipe cover outer peripheral wall and being convenient for threaded rod installation fixed, it is convenient for hollow rod installation fixed simultaneously, through the effect of adjusting ring, rubber friction ring and connecting plastic pole, it is convenient for adjusting the position of clamping plastic seat, through the effect of clamping plastic seat to oxygen pipe and supporting, prevent the oxygen pipe and appear bending folding condition, and through the way of screw thread fixing and clamping and install, it is convenient for dismounting or installing clamping plastic seat, improved the convenience of use.

Cannula devices, systems, and methods are provided for introducing one or more instruments into a patient's body to perform a procedure. In one example, the cannula device includes first and second housings defining a throughbore, and a plurality of elongate members extending distally from the housings, the elongate members cooperatively defining a passage axially aligned with the throughbore between proximal ends and distal tips of the elongate members. The first housing is moveable in an axial direction with respect to the second housing to cause the proximal ends of the elongate members to move outwardly to increase a size of the passage and, optionally, may taper when expanded. Optionally, one or more secondary devices, e.g., an obturator with a sharpened tip, or an obturator and tubular access device may be provided that may be inserted through the throughbore into the passage before expansion of the passage.

The utility model discloses a pipe inserting device. The pipe inserting device comprises a base; the mounting seat is connected with one end of the base, the mounting seat is arranged between a mold core station and a guide pipe station, the first positioning assembly and the second positioning assembly are arranged on the mounting seat, a first through hole is formed in the first positioning assembly, the inner diameter of the first through hole is matched with the outer diameter of a mold core, and the inner diameter of the second through hole is matched with the outer diameter of the mold core. A second through hole is formed in the second positioning assembly, the second through hole and the first through hole are concentrically arranged, the minimum hole diameter of the second through hole is matched with the outer diameter of a guide pipe, and the minimum hole diameter of the second through hole is larger than the minimum hole diameter of the first through hole; the catheter clamping assembly is arranged on the base and used for clamping a catheter; the first moving assembly is used for driving the base to move in the first horizontal direction. Compared with the prior art, the pipe inserting device can improve the pipe inserting efficiency and improve the overall production efficiency.

Irrigation systems and methods are disclosed. An irrigation system includes a body defining a proximal portion and a distal portion. The proximal portion defines a cavity sized and configured to receive a working end of a hand-piece therein. An inlet tube extends through a portion of the body and is configured to receive a fluid flow therethrough. An outlet tube assembly is coupled to the distal portion of the body and extends distally beyond a distal edge of the body. The outlet tube assembly includes an inner tube and an outer tube. The inner tube and the outer tube define a fluid path therebetween. The inlet tube is in fluid communication with the outlet tube assembly such that the fluid flow received through the inlet tube flows through the fluid path of the outlet tube assembly and exits the outlet tube assembly at a distal end.

An overtube assembly is provided. The overtube assembly includes a primary tubular body defining a primary lumen configured to receive a first elongated medical device, and a secondary lumen extending along the primary tubular body, configured to receive a second elongated medical device. The primary tubular body has a length extending from a proximal end oriented to receive the first elongated medical device to a distal end. The secondary lumen is coupled along the length of the primary tubular body. When a torque force is applied to the proximal end of the primary tubular body, causing the proximal end to rotate by a first amount of rotation, the distal end of the primary tubular body responds by rotating by a second amount of rotation, lagging behind the first amount of rotation by a rotational lag of less than 90 degrees. TIFF2026524940000002.tif122134

The utility model relates to a protection pipe sleeve and a visible pipe core intubation device, the protection pipe sleeve comprises a first sleeve body, the first sleeve body is tubular, the first sleeve body is provided with a channel and an insertion hole communicated with the channel, the channel is used for penetration of a pipe core assembly, the inner wall of the channel is provided with a lubricating medium layer, and the lubricating medium layer is arranged along the length direction of the first sleeve body; the second sleeve body is a transparent sleeve body, the second sleeve body is arranged on the side, away from the insertion hole, of the first sleeve body, the second sleeve body is provided with a containing cavity communicated with the channel, and the containing cavity is used for containing a probe of the pipe core assembly. The protection pipe sleeve can wrap the pipe core assembly to form protection, it is ensured that the pipe core body and the probe are not contaminated by bacteria or viruses in an air channel, and meanwhile, the lubricating medium layer is arranged in the first sleeve body, so that the pipe core assembly can be placed in and taken out conveniently. In addition, the protective tube sleeve can be a disposable article, and the protective tube sleeve can be directly taken out to be treated as waste after an operation, so that the cleaning and disinfection work of the tube core assembly can be reduced.

The application discloses a surgical method for the reduction and fixation of a posterior cruciate ligament tibial insertion avulsion fracture under the guidance of ultrasound, and is especially suitable for the reduction treatment of a posterior cruciate ligament tibial insertion avulsion fracture. The surgical method comprises the following steps: acquiring fracture information of a patient by means of an ultrasonic positioning device, wherein the fracture information at least comprises position information of a fracture block; planning a surgical path according to the fracture information, wherein the surgical path extends from the body surface of the patient to the fracture block; placing a guide needle along the surgical path, wherein the distal end of the guide needle is arranged close to the fracture block; placing a cannula device along the guide needle, wherein the distal end of the cannula device is arranged close to the fracture block, a working channel is formed in the cannula device, and the guide needle is accommodated in the working channel; performing a reduction operation on the fracture block; making a kirschner wire pass through the working channel and temporarily position the fracture block; opening at least two bone tunnels in a main bone adjacent to the fracture block by means of a drilling device; making a suture thread pass through the at least two bone tunnels; and fixing the two ends of the suture thread.

The invention discloses automatic dropper assembling equipment in the technical field of automatic dropper production equipment. The automatic dropper assembling equipment comprises a rotating disc device, a dropper feeding device, a dropper inserting device, a heat sealing device and a discharging device. The rotating disc device, the dropper feeding device, the dropper inserting device, the heat sealing device and the discharging device can form a rotary multi-station automatic dropper assembling production line. According to the automatic dropper assembling equipment, unmanned and uninterrupted continuous operation from an empty jig to finished product discharging is achieved, the production efficiency and the productivity are greatly improved, and the bottleneck problem of manual assembling is solved. The intermittent movement of the rotary table provides a stable operation time window for each station, the synchronism and the rhythm controllability of the actions of all the devices are ensured, the individual difference caused by manual operation is eliminated, and the high consistency and repeatability of key parameters such as the insertion depth and the heat sealing position of each product are ensured.

The invention discloses a rotary anti-fog decontamination endoscope cannula device, which belongs to the technical field of medical instruments and comprises a handle, a cannula component and a driving unit shell. One end of the driving unit shell is fixedly connected with the handle; a driving unit used for driving the sleeve assembly is arranged in the driving unit shell. A through endoscope channel is formed in the center of the handle, the center of the sleeve assembly and the center of the drive unit shell and used for arranging an endoscope inside. A controller is arranged in the handle and is electrically connected with the driving unit; the sleeve assembly comprises an outer-layer sleeve, a middle-layer sleeve and an inner-layer sleeve which are sequentially arranged from outside to inside; the driving unit is used for driving the middle-layer sleeve to rotate; and the far end of the middle-layer sleeve is in threaded connection with a high-transmittance optical window. The demister has the advantages of being convenient to operate, good in demisting effect, safe and low in cost.

The utility model belongs to the field of medical devices, concretely is tracheal cannula device of convenient installation and dismounting, include: support ring, the outside wall of support ring is fixedly connected with the limiting ring, the limiting ring and support ring form the guide slot between, the guide slot is slidably connected with the adjusting assembly, and adjusting assembly and limiting ring are detachably connected, connecting plate, connecting plate fixedly connected at the bottom of adjusting assembly, connecting plate bottom end fixedly connected with support seat, and support seat is installed with fixed component. The utility model discloses the mutual cooperation of the structure such as limiting ring, adjusting assembly, fixed component, binding component etc. that sets up, not only can adjust device overall length of use, adaptively adjust to the patient of different face and head size, but also can adjust the position of fixed ring, adapt to different cannula position, adjusting assembly, fixed ring, binding component can realize quick installation and dismounting simultaneously, make it easy to store and carry, avoid occupying too much storage space.

The invention belongs to the technical field of well cementation operation, and discloses a casing system and a prevention performance verification method thereof. The casing pipe system comprises an intermediate casing pipe, a production casing pipe and a prevention assembly, a cement sheath is formed after cement is injected into an annulus between the intermediate casing pipe and the production casing pipe, the prevention assembly is fixed to the outer side of the production casing pipe, located in the annulus and used for preventing the cement sheath in the annulus from generating micro gaps, and a first sand blasting layer is arranged on the inner wall of the intermediate casing pipe. A second sand blasting layer is arranged on the outer side of the prevention assembly, and the outer side of the cement sheath makes contact with the first sand blasting layer and the second sand blasting layer. By means of the prevention assembly, generation of micro gaps of a cement sheath can be prevented, the first sand blasting layer and the second sand blasting layer are arranged on the inner wall of the intermediate casing and the outer side of the prevention assembly correspondingly, and compared with a smooth pipe wall adopted in the prior art, the well cementation quality of the casing system can be better improved; and the installation comparison test between the simulation sleeve device and the prevention assembly is adopted, so that the prevention performance of the sleeve system can be verified.

The invention relates to a cannula arrangement comprising a cannula tube extending longitudinally between a distal cannula end and a proximal cannula end and having a distal cannula tip, and a cannula connector arranged at the proximal cannula end. The cannula arrangement further comprises a locating lance extending longitudinally between a distal lance end and a proximal lance end and arranged to be axially movable along a longitudinal axis of the cannula tube, wherein the locating lance has a locating element at its distal end, which is configured to be located by means of an ultrasound imaging method.The cannula assembly further comprises an actuating device, which is configured for manual operation, is operatively connected to the locating lance, and by means of which the locating lance can be moved from a starting position to a locating position, wherein in the starting position the locating element is arranged inside the cannula tube and in the locating position the locating element is arranged distally outside the cannula tube, projecting from the cannula tip. The invention also relates to an ultrasound system for use in an ultrasound imaging procedure, comprising the locating lance.

The utility model belongs to the technical field of medical instruments, and particularly relates to an abdominal wall puncture stitching instrument. Comprising a puncture cannula device, a puncture cone device and a threading hook, the puncture cannula device comprises a puncture cannula seat, a gas injection valve, a gas injection switch, a gas blocking valve, a rotary switch, a spring, a puncture cannula seat sealing cover, a lower sealing cover, a blocking piece fixing ring, a blocking piece, an upper pressing plate, an elastic sealing cap inner ring, a lower pressing plate, a self-debugging sealing cap and a positioning guide cover. The puncture cone device comprises a puncture cone, a release switch, a puncture cone seat, a pressing key, a puncture cone guide hole I and a puncture cone guide hole II; the threading hook comprises a handle, a push handle reset spring, a push handle, a handle cover, a thread pulling hook, a sleeve and a needle tube. The abdominal wall puncture stitching instrument is reasonable in design and convenient to use, due to the fact that the puncture cannula device, the puncture device and the threading hook are arranged, puncture of deep fascia of the abdominal cavity, the thoracic cavity and the like is achieved under an endoscope, and meanwhile a channel allowing other minimally invasive instruments to enter the body is established for laparoscopic surgery.

The utility model relates to the field of medical instruments, in particular to a guiding soft tissue expanding and stripping sleeve device which comprises a first separating clamp, a second separating clamp, a first handle, a second handle, a connecting shaft and a fixing sleeve. The number of the connecting shafts is two, the two connecting shafts are located at the opposite positions of the outer wall of the circumference of the fixing sleeve correspondingly, the placing direction of the connecting shafts is perpendicular to the projection of the placing direction of the fixing sleeve on the horizontal plane, and each connecting shaft is rotationally provided with a first connecting rod and a second connecting rod. The first connecting rod and the second connecting rod are crossed to form an X shape; the first separating clamp and the first handle are fixedly installed at the two ends of the first connecting rod respectively, the second separating clamp and the second handle are fixedly installed at the two ends of the second connecting rod respectively, and the first separating clamp, the second separating clamp, the first handle and the second handle are all parallel to the fixing sleeve. The device has the effect of promoting safe and rapid operation.

The invention discloses a cannula device for temporomandibular arthroscope approach, and relates to the technical field of medical instruments, the cannula device comprises a cannula assembly and a handle, one end of the handle is provided with a cannula piece, the top of the handle is sleeved with a sealing cover, one side of the handle is fixedly provided with a flushing pipe, and the other side of the handle is fixedly provided with an injection pipe. According to the invention, each passage can be opened and closed synchronously, it is ensured that only one passage is opened in the operation process, pipeline pollution caused by backflow of internal liquid is avoided, the other two passages are closed in the operation process, the operation process is not influenced by the other two passages, the whole structure is divided into three gears, and the operation is convenient. By means of the technical scheme, quick switching of the channels can be achieved only by manually rotating the rotating disc, the operation convenience of medical staff is greatly improved, automatic exhaust probing can be conducted after the channels are closed, and compared with manual probing through a probe, probing is faster, and operation time is saved.

The utility model relates to the technical field of lifting tables, in particular to a lifting table with a built-in AC power line, which comprises a table frame, a lifting column, a base, a control box, a motor driver, the AC power line, a line arranging box mechanism and a multi-stage lifting mechanism, the line arranging box mechanism comprises a front outer shell, a rear outer shell, a front line arranging strip and a rear line arranging strip, and the multi-stage lifting mechanism comprises a multi-stage screw rod device. The lifting column is internally provided with a multi-stage lead screw device, the multi-stage lead screw device is connected with a multi-stage pipe guiding device, the multi-stage pipe sleeving device further comprises a multi-stage pipe sleeving device, the multi-stage lead screw device comprises an inner lead screw connected with a motor driver, and an outer lead screw is arranged on the outer side of the inner lead screw through a spline sleeve. The lifting function is not affected, meanwhile, the problem that the AC power line can ascend and descend along with the table when the table ascends and descends is solved, and the risk that the AC power line is scratched to be powered off or damaged when the table ascends and descends is avoided.

The application discloses a kind of drip tube automatic assembly equipment in the technical field of drip tube automatic production equipment, comprising: carousel device, drip tube feeding device, cannula device, heat sealing device and discharging device.The carousel device, drip tube feeding device, cannula device, heat sealing device and discharging device can form a rotary multi-station automatic drip tube assembly assembly line.The drip tube automatic assembly equipment of the application realizes unmanned, uninterrupted continuous operation from empty jig to finished product discharge, greatly improves production efficiency and capacity, solves the bottleneck problem of manual assembly.The intermittent motion of the turntable provides a stable operation time window for each station, ensures the synchronicity and beat controllability of each device action, and eliminates the individual differences caused by manual operation, ensuring the high consistency and repeatability of each product in insertion depth, heat sealing position and other key parameters.

Devices for providing respiratory therapy to a patient are disclosed. One device Includes first and second elongated lumens and a nosepiece. The elongated lumens each have a constant internal diameter. The nosepiece portion has a third lumen and a fourth lumen. The third and fourth lumens have constant internal diameters equal to those of the first and second lumens. The third and fourth lumens have inlet ends adapted to be connected to the outlet ends of the first and second lumens without constricting the internal diameter of the first and second lumens. The third and fourth lumens are configured to receive first and second flows of breathing gas from the first and second lumens and deliver the flows of breathing gas to outlets end of the third and fourth lumens. The second flow of breathing gas is maintained separate from the first flow of breathing gas within the noseplece portion.