43 results about "Cannula device" patented technology

The utility model relates to the technical field of tracheostomy cannulas, in particular to a tracheostomy cannula device integrating sputum suction and atomization functions, which comprises a positioning cannula shield, a tracheostomy cannula body, a sputum suction tube, an atomization humidification tube and an atomization component, the tracheostomy cannula body is connected with the positioning cannula shield, the atomization humidification tube is arranged on the inner wall of the sputum suction tube, and the atomization component is arranged on the inner wall of the sputum suction tube. One end of the atomizing and humidifying pipe penetrates out of one side of the sputum suction pipe and then is connected with the output end of the atomizing assembly, one end of the atomizing and humidifying pipe is located on the outer side of the positioning sleeve protective cover, the sputum suction pipe movably penetrates through the positioning sleeve protective cover, one end of the sputum suction pipe is located on the outer side of the positioning sleeve protective cover, and one end of the sputum suction pipe is connected with a negative pressure connector. The other end of the sputum suction pipe is located on the inner side of the positioning sleeve protective cover, the other end of the atomization humidification pipe extends out of an outlet in the other end of the sputum suction pipe, a one-way valve is arranged at an outlet in the other end of the atomization humidification pipe, and a limiting piece is arranged on the peripheral wall of the sputum suction pipe and used for abutting against the outer side of the positioning sleeve protective cover.

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.

The invention discloses a kirschner wire sleeve device for muscle layer expansion, which relates to the technical field of orthopedic surgery and comprises a kirschner wire, an expansion sleeve, a protective layer and a traction rod. The expansion sleeve is composed of a support and an expansion layer, a guide ring is arranged in the middle of the support, symmetrical connecting frames are arranged on the outer side of the guide ring, the expansion layer is sleeved outside the guide ring, and one end close to a skeleton is of an involute pipeline structure. After the Kirschner wire fixes the bone, the guide ring slides towards the bone along the Kirschner wire, the involute pipeline structure of the expansion layer enters the space between the Kirschner wire and the muscle layer, and the muscle layer is pushed away outwards to form an operation space. The protective layer can reduce direct friction between the muscle layer and the expansion layer, and the lubricant arranged in the protective layer can assist operation; the traction rod can stably control the expansion layer to be opened. The device is made of a biocompatible material and is provided with a buffer structure, the operation space can be flexibly adjusted, the operation safety, adaptability and efficiency are effectively improved, and the use pain point of a traditional kirschner wire sleeve device is solved.

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.

A uniquely structured cannula and an instrument to efficiently and effectively deploy and remove the cannula is provided. In particular, the present disclosure is directed to inventive cannula device embodiments structured and / or configured to have a working portal (for delivery of biologics or use by other surgical devices), and a method to easily deploy and remove the cannula while reducing the area of the surgical site required for insertion therein.

A radially expandable trocar, port or cannula system is provided for use in minimally invasive surgeries. The cannula creates a port access with an initial small internal diameter. The passage of the cannula devices is defined by a plurality of elongate rigid members. A number of mechanisms are provided for expanding the passage of the cannula devices, by moving the plurality of elongate rigid members towards a larger radial location, thereby creating a larger internal diameter for the port. The elongate rigid members can be prevented from unintended movement when the system is at the un-expanded state, during expansion and when it is expanded to the desired larger diameter. Exemplary embodiments include methods of preventing gas loss from the tissue that would occur through the gaps created during expansion.

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 invention discloses a negative pressure sleeve device, which comprises a film fixing mechanism, a sealing chamber, a pressure gauge, a sensor, a high-performance vacuum pump, a pedal and a power supply, and relates to the technical field of negative pressure fixing sleeves, a high-molecular plastic film coated on the outer layer of a metal pipe enables the metal pipe to enter a human body more smoothly, and the harm is effectively avoided; the device can remarkably improve the detection and inspection effect, and can better assist in detection and improve accuracy and intuition compared with a traditional catheter; the sleeve part is excellent in performance, has high tensile strength and yield strength, and is oil-resistant, wear-resistant and aging-resistant; the clamping part is reasonable in design, convenient to operate and firm in structure, and an embedded structure and an elastic sheet are adopted, so that a sleeve is convenient to insert.

The utility model is applicable to the field of medical supplies, and discloses a tracheostomy cannula device capable of preventing pressure injury and extubation, which comprises a tracheostomy cannula and a tracheostomy lacing. Perforated holes are formed in the left side and the right side of the tracheostomy sleeve respectively, the tracheostomy tying belt is a flexible waterproof belt, the middle section of the tracheostomy tying belt is an abutting part, one end of the tracheostomy tying belt is a first contact part, the other end of the tracheostomy tying belt is a second contact part, and a clamping groove with an outward opening is formed in the abutting part of the tracheostomy tying belt. When the tracheostomy tube is fixed, the tracheostomy tube is placed into the trachea, the first contact part and the second contact part penetrate through the penetrating holes respectively and are turned over outwards again, then the first contact part and the second contact part move towards the abutting part and are finally connected and fixed in the clamping groove, and therefore the tracheostomy tube is completely fixed. By means of the structure, the tracheostomy cannula can be fixed to the trachea of a patient, the tracheostomy tying belt is fixed to the rear portion of the neck of the patient, the whole process is easy to operate and firm in installation, liquid cannot be infiltrated, and soft materials protect the skin.

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 discloses a multifunctional visual trachea cannula device and relates to the field of medical devices.The device comprises a handle assembly, a guide core body connected to the handle assembly, a joint segment installed at the end of the guide core body, and a display screen and a wave wheel assembly installed on the handle assembly; a folding mechanism is installed on the handle assembly, and the display screen is installed on the folding mechanism.It is to be noted that in the application, when the handle assembly is detached, the folding frame drives the display screen to turn into the folding groove, and the handle assembly is quickly separated from the guide core body, effectively avoiding the problem that the handle assembly is pulled when falling off, causing damage to the patient's body, and the blocking cover can shield the wave wheel assembly, effectively avoiding the problem of accidental touch, further ensuring the safety of the trachea cannula.

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 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.

The utility model relates to the technical field of medical surgical instruments, and discloses a self-locking laparoscope cannula device which comprises a laparoscope sheathing canal, a fixing seat and a locking mechanism, a first through hole is formed in the fixing seat, and the laparoscope sheathing canal is connected to one end of the fixing seat and is communicated with the first through hole in a right opposite mode; the locking mechanism comprises a retaining locking piece and an unlocking piece, the retaining locking piece is fixed in the first through hole, the laparoscope with the preset diameter range sequentially penetrates through the retaining locking piece and the first through hole and then extends into the laparoscope sheathing canal, and when the retaining locking piece is in a one-way locking state, the laparoscope can be stressed to move in the first direction; and the retaining locking piece limits the movement of the laparoscope in the second direction, the first direction is the direction from the first through hole to the laparoscope sheathing canal, when the retaining locking piece is in the unlocking state, the laparoscope can be stressed to move in the first direction or the second direction, and the unlocking piece is used for switching the retaining locking piece to be in the one-way locking state or the unlocking state. Assembly is convenient and fast, and universality is good.

A nasal cannula is described herein for respiratory therapy which includes a first gas supply tub with a distal end terminating in a first connector, and a nasal cannula body which includes a first end rotatably coupled to the first connector, a second end opposite the first end, a longitudinal axis extending from the first end to the second end, and a first nasal prong in fluid communication with the first gas supply tube. The first nasal prong is rotatable relative to the first gas supply tube about the longitudinal axis of the nasal cannula body.

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.