52 results about "Direct vision" patented technology

The invention provides a balloon endoscopic system for intravascular direct vision examination, and relates to the technical field of medical instruments, the balloon endoscopic system comprises a catheter, a balloon capable of being filled and discharged, an endoscope lens, a light source assembly and an image transmission processing module, a cavity channel used for containing the endoscope lens and a conduction component of the light source assembly is formed in a catheter body of the catheter, and the catheter body of the catheter is internally provided with a cavity channel used for containing the endoscope lens and the conduction component of the light source assembly; the filling pipeline is used for supplying liquid to the inflatable and deflatable balloon; the inflatable and deflatable balloon is fixedly connected to the outer surface of the front end of the catheter, and the inflatable and deflatable balloon is used for bulging after being conveyed to a target position in a blood vessel. The inflatable and deflatable balloon can block blood flow and open the blood vessel wall after bulging and is matched with transparent filling liquid injected into the filling pipeline, residual blood can be further removed, a blood-free observation window is formed, interference of blood on imaging is avoided, and a foundation is laid for clearly observing the condition of the blood vessel wall. The inner wall of the balloon is coated with a nano anti-fog coating, so that the penetrability of a light source is ensured, and the fogging surface influence caused by blood residue or temperature difference can be avoided.

The utility model discloses a direct-viewing pressure feedback type radial artery compressor, and belongs to the field of medical instruments. A direct-view pressure feedback type radial artery compressor comprises a fixing plate, a pressure feedback device and a pressure feedback device. The bandage is arranged at one end of the fixing plate and binds the fixing plate to the arm of the patient; the direct-viewing pressure feedback type radial artery compressor further comprises a pressure applying piece and a pressure feedback piece, wherein the pressure applying piece is movably arranged on the fixing plate; the driving group is arranged on the fixed plate and is used for driving the pressure applying piece to move; the air bag is arranged on the pressure applying piece, located at the lower end of the pressure applying piece and abutted against the arm of the patient; the pressure indicating piece is arranged on the pressure applying piece in an up-down sliding manner; an air hole communicated with the air bag is formed in the pressure applying piece; the pressure indicating piece is arranged in the air hole in an up-down sliding mode. The direct-view pressure feedback type radial artery compressor has the beneficial effect that the direct-view pressure feedback type radial artery compressor with the indication function is provided.

The invention relates to an imbedding device for a nerve microvascular nerve decompression operation gasket under direct vision. The imbedding device comprises a tube assembly, a guide wire assembly, a decompression gasket and a pushing component, the tube assembly comprises a sheathing canal, a balloon and a gas transmission component, the balloon is arranged on the sheathing canal and close to the front end of the sheathing canal, and the gas transmission component is arranged on the sheathing canal and communicated with the balloon; the guide wire assembly is contained in the sheath tube, the guide wire assembly comprises a guide wire, at least two pull wires and a camera, a snake bone mechanism is arranged on the guide wire, the front end of the guide wire extends out of the front end of the sheath tube, the pull wires are connected to the snake bone mechanism, and the camera is arranged at the front end of the guide wire; the decompression gasket is of a cylindrical hollow structure and is arranged outside the sheath tube in a sleeving mode. The pushing component is arranged outside the sheathing canal in a sleeving mode and used for pushing the pressure reduction gasket towards the front end of the sheathing canal. The implantation device does not need to enter and exit from the opening repeatedly, operation of a doctor is simplified, the surgical operation difficulty is reduced, the surgical time is shortened, and the surgical risk is reduced.

The abdominal wall retractor for the observation hole of the laparoscope comprises a first retraction arm and a second retraction arm, the first retraction arm and the second retraction arm are hinged through a hinged shaft, and the first retraction arm comprises a first retraction arm front section, a first retraction arm middle section and a first retraction arm rear section. The end part of the rear section of the first retraction arm is fixedly connected with a first operation ring; the second retraction arm comprises a second retraction arm front section, a second retraction arm middle section and a second retraction arm rear section, the end part of the second retraction arm rear section is fixedly connected with a second operation ring, and the end part of the first retraction arm front section is movably connected with a first retraction rod and a second retraction rod; and the end part of the front section of the second retracting arm is movably connected with a third retracting rod and a fourth retracting rod. The utility model has the beneficial effects that the abdominal wall of the observation hole and the subcutaneous fat layer can be expanded, and the anterior sheath layer and the peritoneal layer can be better exposed, so that the peritoneal layer and the anterior sheath layer can be better sutured under direct vision, related complications of a puncture hole are avoided, the use is safe and reliable, and the operation time of medical personnel is saved.

The invention discloses a laparoscopic cholecystectomy superfine auxiliary instrument and relates to the technical field of medical instruments, the laparoscopic cholecystectomy superfine auxiliary instrument comprises a handle, a superfine puncture part and a head, the superfine puncture part comprises an outer sleeve and a puncture needle, the two ends of the outer sleeve are connected with the handle and the head respectively, the puncture needle is arranged in the outer sleeve, and the front end of the puncture needle is provided with a puncture tip; the handle controls the puncture needle to slide back and forth so as to control the opening and closing of the head part. According to the scheme, ultramicro-invasive puncture is achieved through the detachable head and the superfine puncture part, firstly, the superfine puncture part can conduct ultramicro-invasive opening on the abdomen of a patient through the puncture tip at the front end of the puncture needle, so that the superfine puncture part enters the abdominal cavity of the patient, and then the superfine puncture part penetrates out of the body of the patient under the guide of a converter of an umbilical laparoscope opening; the head assembly is accurately completed under in-vitro direct vision, then the head assembly is returned to the abdomen of a patient to complete an operation, and under the condition that the opening and closing distance and the clamping force of the head are proper, ultramicro-wound trepanning is completed, postoperative scars are eliminated, and the pain of the patient is relieved.

The nanopowder includes a nanoparticle having a core particle with a thin film coating. The core particle is formed independently of the thin film coating from at least one of a rare earth metal-containing oxide, a rare earth metal-containing fluoride, a rare earth metal-containing oxyfluoride, or a combination thereof. Thin film coatings may be formed using non-direct vision techniques such as atomic layer deposition (ALD). Also disclosed herein are nanoceramic materials formed from the nanopowders and methods of making and using the nanopowders.

The utility model relates to the technical field of deciduous tooth root canal treatment, in particular to a flushing auxiliary instrument for deciduous tooth root canal treatment, which comprises an injection needle body, a cylinder is arranged at the mounting end of the injection needle body, external threads are arranged on the outer surface of the cylinder, and a plug is arranged in the cylinder. The interior of the plug is of a hollow structure and is installed on the inner wall of the injection needle body in a communicated mode, the injection end of the injection needle body is arranged to be an oval pointed end, a plurality of flushing holes are evenly formed in the outer side wall of the oval pointed end, and the installation end of the injection needle body is installed on an externally-connected injector body. According to the utility model, the resistance mood of children can be avoided, a threaded retention syringe or a pluggable retention syringe can be selected according to clinical practice, and meanwhile, the bending angle of the syringe needle body can be adjusted according to different orientations of the root canals of the deciduous molar teeth for pre-bending, so that the flushing efficiency of the root canals in different orientations under non-direct vision is improved.

The utility model relates to the technical field of detection, in particular to a pointer parallelism detection device, which comprises a base and a host with a display screen, a mounting bracket and a positioning seat are arranged on the base, the mounting bracket comprises a first plate and a second plate, the base, the first plate and the second plate jointly enclose to form an accommodating space, a camera is fixedly arranged in the accommodating space, and the positioning seat is arranged on the base. A lens of the camera faces the positioning seat, a mounting groove is formed in the top of the positioning seat, a positioning tool is placed in the mounting groove, the camera is electrically connected with the host, and the central axis of the lens of the camera and the top face of the cylinder are located on the same horizontal plane. According to the utility model, through the arrangement of the positioning tool and the camera located on the same horizontal plane with the positioning tool, the hour hand, the minute hand and the second hand on the clock point to the same direction, and the hour hand, the minute hand and the second hand on the clock are shot and amplified to the display screen of the host in equal proportion. The detection efficiency is relatively high, and the measurement precision is relatively high.

The application discloses a kind of micro-pixel group and micro-lens array near-eye display lens, belong to augmented reality and near-eye display technical field.The near-eye display lens includes: optical lens, micro-pixel group array arranged thereon, micro-lens array, and substrate thin layer material, transparent optical adhesive layer, protective layer;Micro-pixel group contains micro-nano pixel, micro-nano pixel is composed of micro-nano pixel element, and micro-nano pixel element is micron / nanometer order independent driving monochromatic light emitting unit, integrates micro-nano light emitting, driving and other devices and functional layer;Micro-lens covers one or more micro-pixel groups and is arranged close to one side of human eye, realizes light collimation focusing and deflection into eye.The application discards traditional complex relay optical system, directly integrates display and optical control unit in optical lens, can realize digital image display, real scene direct vision and accurate fusion of virtual and real image, with high transparency, high optical efficiency, large field angle characteristics, lens can realize light and thin design, and wearing comfort is high.

The invention discloses application of a hydrogel microneedle capable of being implanted into an abdominal cavity in colorectal cancer abdominal wall infiltration focus, and relates to the field of medicine. The traditional Chinese medicine composition is applied to clinical treatment of rectal cancer abdominal wall infiltration lesions, and a mouse subcutaneous tumor model and the abdominal wall infiltration lesions are verified, and the specific application method comprises the following steps that 1, after a mouse is subjected to general anesthesia, the abdomen of the mouse is opened, and the position of the abdominal wall infiltration lesions is detected and determined; step 2, clamping the sterilized micro-needle sheet by using noninvasive forceps and feeding the sterilized micro-needle sheet into an abdominal cavity; 3, attaching the microneedle substrate to the surface of a focus under direct view, and pressing to enable the needle body to penetrate through the peritoneum; and 4, flushing with normal saline to confirm that the microneedle is fixed, withdrawing the instrument, and suturing the incision. The microneedle physically penetrates through the surface layer of the peritoneum, the medicine is directly delivered to the deep layer of an infiltrating focus, the problem of low efficiency caused by the peritoneum barrier in the traditional therapy is solved, and the GelMA / hyaluronic acid hydrogel is gradually swelled and degraded in body fluid, so that collagenase, a macrophage scavenger and an anti-tumor medicine are continuously released, and the local effective concentration can be maintained for more than two weeks.

The embodiment of the present application provides a stent delivery device for use with a medical endoscope, and relates to the field of medical equipment, and the stent delivery device comprises a non-stent accommodating part and a stent accommodating part, the non-stent accommodating part is detachably connected with the stent accommodating part, and the non-stent accommodating part and the stent accommodating part cooperate to release a stent located in the stent accommodating part; the non-stent accommodating part can pass through a channel of the endoscope, and the outer diameter of the stent accommodating part is greater than that of the non-stent accommodating part. The stent accommodating part at the distal end can accurately and safely release the stent under the direct vision of the endoscope. When the stent in the stent delivery device needs to be replaced, the stent accommodating part and the non-stent accommodating part are detached, and then the stent accommodating part can be directly replaced, so that the replacement operation is convenient.

The present application provides a kind of spine surgery minimally invasive operation visual channel endoscope, including visual channel, lens, light source, guide rod, expansion pipe;Visual channel includes surgical operation channel, lens card slot, fixed connection part.Lens card slot is used to fix camera component part, and there is a light source hole on the two sides of lens card slot, for fixing cold light source head.Surgical operation channel is the channel of equal size up and down with external thread, it is convenient for surgeon to screw in and screw out soft tissue, reduce the extrusion and damage of channel to tissue.The visual channel endoscope, the visual field of surgeon can be directly operated under direct vision through surgical operation channel, also can be operated under mirror under the monitoring of camera.The double visual field of surgeon provides convenience and safety for operation, also is conducive to the observation and learning of assistant and learner, improves learning interest, is conducive to the promotion and development of spine minimally invasive surgery career.

The invention provides a multi-arm open-type implantation guide plate, and relates to the technical field of dental implantation, the multi-arm open-type implantation guide plate comprises a body fixed on upper and lower jaw dentitions or jaw bones and a guide plate sleeving the outer side of the body and used for positioning, and the middle of the guide plate is provided with a central platform for realizing stable positioning by using a multi-point plane stabilization principle. By means of a unique stable guide mode supported by multiple guide rails on the guide plate, implanting is completed under whole-course direct vision of a doctor, hard and soft tissue interference can be found in time in a fully-open implanting operation area, meanwhile, due to the strong supporting force of the multiple guide rails, the effect of correcting implanting drill bit deflection caused by different bone mineral densities in the implanting operation area is achieved, and the implanting efficiency is improved. The common planting hole type preparation difficulty caused by the friction resistance of the guide ring of the existing single-hole guide ring is avoided, and the heat generated in an operation area is reduced; secondly, a guide plate of a fully-open operation area formed by the device is combined with a water supply system on the implant dental handpiece to be matched with a water injection hole formed in the central platform to automatically spray water in multiple directions, so that the cooling efficiency is greatly improved, the implant cavity can be effectively prevented from being overheated, and the preparation efficiency is improved.

The invention discloses an endoscopic three-finger type hard supporting water bag structure, and relates to the field of medical instruments, the endoscopic three-finger type hard supporting water bag structure comprises a mounting column, a first mounting groove is formed in the inner top wall of the mounting column, an adjusting assembly is arranged in the mounting column, a first supporting assembly connected through the adjusting assembly is arranged in the mounting column, and a driving assembly is arranged in the first mounting groove; through combination of three-finger type unfolding design and water bag flexible supporting, a traditional rigid traction stress conduction mode is changed, an adjusting assembly drives a first mounting cylinder and second mounting cylinders on the two sides to form a finger-like distributed layout, and a water bag which is expanded by injecting water in a first supporting assembly is matched; supporting force is transmitted to the surface of a tender organ such as the liver through three independent and flexible contact areas, the contact area is greatly enlarged, precise adaptation of supporting postures is achieved through a multi-stage adjusting mechanism, the view exposure requirements under different operation scenes are met, a clear and stable direct view is provided for operation instruments, and the operation efficiency is improved. And the accuracy of surgical operation is improved.

The invention relates to the technical field of digital twinning, in particular to a chemical fiber doffing machine traveling wheel diameter wear detection and maintenance strategy generation method, which comprises the following steps: collecting wheel diameter direct vision measurement data, indirect measurement data and working condition data; then constructing a geometric model, a physical model and a multi-source data fusion model, and inputting collected data for fusion processing to obtain an optimal wear estimation value; diagnosing a wear state based on the estimated value, and predicting a wear trend and residual life in combination with a physical model; and finally, generating an intelligent maintenance decision in combination with the production plan and visually displaying the decision. And executing maintenance operation and feeding back the data optimization model. Through multi-source data fusion and digital twin modeling, micron-sized wear detection, precise life prediction and maintenance decision of production adaptation are realized, the operation stability of equipment is improved, and the risk of production interruption is reduced.

The invention relates to a device (100) for tracking elements that is configured to be manipulated by an operator and that comprises a foot (30), a body (20) and a head (10), the tracking device (100) comprising at least a first sensor and second sensor configured to measure the rotation of the body (20), the head (10) comprising a sighting device (11) and optionally a rangefinder (13), the tracking device (100) further comprising a processing unit (31) able to process the data generated by the first sensor and second sensor in order to calculate the three-dimensional coordinates of the sighted element of interest, the tracking device (100) further comprising a transmitting unit configured to transmit the three-dimensional coordinates calculated by the processing unit (31) to a control console.

A dual vision device designed to generate a second vision in addition to a direct vision of a user, independent of the direct vision and located in the upper part of the field of vision of the user. The dual vision device includes a display assembly carried by a support, the display assembly including two display units designed to generate the second vision in the upper part of the field of vision of the user, each display unit including an eyepiece and a screen chosen so that each display unit forms an image clearly viewable by a distinct eye of the user under the following conditions: the support is inclined so that the image formed by each display unit is viewable only in the upper part of the field of vision of the user when the user looks upwards, and the distance between the eyes of the user and the entrance of the eyepieces is greater than or equal to a predetermined distance, the predetermined distance being chosen so as to enable the insertion of glasses between the eyes of the user and the display unit.

A kind of tissue isolator instrument of liquid-filled component embedding in skin, including isolation balloon, liquid-filled structure and fixed structure, isolation balloon includes balloon body and connecting pipe;Liquid-filled structure includes port body, closure structure and connecting head;Port body has cavity inside, and the tail end of cavity is equipped with closure structure, such as puncture film or closed valve structure;Port body other end is provided with connecting head, and connecting head can be extended into and communicate with the connecting pipe of isolation balloon;Liquid-filled structure and connecting pipe are detachably connected;Fixed structure is arranged in the middle of port body, and is provided with suture hole on it, and the side of it facing skin is provided with adhesive layer, and is fixed on the surface of skin around incision by suture and adhesive.The above setting embeds and fixes the liquid-filled structure of the instrument on the surface of skin, and can be completed under direct vision balloon filling and discharging operation, greatly reduces the size of liquid-filled structure, reduces surgical incision and patient trauma;At the same time, it can avoid repeatedly cutting skin within a short time for implanting and removing balloon.

The utility model provides outdoor laser lamp uses luminous point shielding device and the outdoor laser lamp of preventing insect collision belongs to outdoor laser lamp technical field, outdoor laser lamp uses luminous point shielding device, including shading cover main part, shading cover main part along the local cover of luminous point periphery is equipped, the three -dimensional light barrier is with vertical inclination in luminous direction and is slidably arranged on shading cover main part, is used for adjusting the direct vision area range of luminous point, the plane light shield is with vertical perpendicular to luminous direction and is slidably arranged in the inside of shading cover main part, the utility model discloses utilize shading cover main part to the both sides and the area of right above of luminous point are shielded, through the movement of three -dimensional light barrier and plane light barrier, realize the size adjustment of luminous point visible area range, like this in the reduction luminous point visible area range, realize the protection of window mirror and the flying small organism, avoid the many malpractices of traditional foreign matter handling mode.

The utility model discloses a light spot forming device for light source detection, which comprises a lens plate, a box body, an optical lens, a zoom lens, a focusing lens and a light source, the lens plate is obliquely arranged and is arranged above the box body in a height-adjustable manner, the optical lens is fixed at the top end of the box body, the zoom lens is fixed at the top end of the box body, and the focusing lens is fixed at the top end of the box body. The zoom lens, the focusing lens and the light source are all arranged in the box body from bottom to top, the zoom lens and the focusing lens are connected with the box body in a vertically adjustable mode, and the optical lens, the zoom lens, the focusing lens and the light source are all located on the same axis; according to the utility model, the spectrograph can be adjusted without directly looking at a light source by human eyes, so that the damage to the human eyes is avoided, the adjustment during testing can be facilitated, the accuracy of test data is ensured, the test efficiency can be accelerated, and convenience and rapidness are realized.

The invention discloses a projection direct vision multiplexing near-to-eye display device, and relates to the technical field of photoelectric display. The device comprises a glasses body, a direct vision display module, a projection display module and a light path modulation structure. The direct-view display module is integrated in the central area of the lens and comprises a first transparent display array and a focusing and diverging optical structure matched with the focal length; the projection display module is arranged on the lens frame body and projects light rays to the edges or the central areas of the lenses, and the light rays are projected to human eyes through the light path modulation structure (comprising deflection and focusing optical elements). The optical path modulation structure adopts a metasurface and other micro-nano optical design, and can integrate a compensation optical device to correct diopter or optimize ambient light. The direct vision and projection module can work independently or cooperatively, the resolution is improved through pixel compensation, the AR / MR function is achieved, and artificial intelligence interaction is supported. The device has high integration, transparent display characteristic and real-time regulation and control capability, and is suitable for near-to-eye display equipment.

The invention discloses a visual instrument capable of being integrated with a bronchoscope and an integrated system, and relates to the technical field of medical instruments.The visual instrument comprises a flexible catheter, an image obtaining unit, an executing mechanism and a control mechanism; the flexible catheter is used for stretching into a working clamp channel of the bronchoscope, and the far end of the flexible catheter can stretch out of an instrument outlet in the far end of the bronchoscope. The image acquisition unit is arranged at the far end and used for being in communication connection with the image processing module, and the image acquisition unit is used for acquiring tissue image information and sending the tissue image information to the image processing module; the executing mechanism is arranged at the far end head and is used for sampling or one or more of treatment; the control mechanism is connected to the near end of the flexible catheter and connected with the executing mechanism so that the action of the executing mechanism can be controlled. According to the visual instrument capable of being integrated with the bronchoscope and the integrated system, operation and treatment of entering a deeper position under direct vision are facilitated.

The application discloses a left auricle occluder for direct vision surgery, which belongs to the technical field of medical devices, and comprises a closing disc and an occluder. The lower end of the occluder is fixedly provided with an upper connecting pipe. The upper middle of the closing disc is fixedly provided with a lower connecting pipe. The middle of the lower connecting pipe and the upper connecting pipe is provided with a fixing cavity. The fixing cavity in the lower connecting pipe is fixedly provided with an extension pipe. The extension pipe extends to the upper side of the lower connecting pipe. The extension pipe is screw-connected with the fixing cavity of the upper connecting pipe. The upper end of the extension pipe is fixedly provided with an upper tooth. The upper end of the driving rod extends to the occluder. The upper end of the driving rod is fixedly connected with an upper screw rod. The upper screw rod is screw-connected with a dilating disc. The closing disc and the occluder can be automatically adjusted when being introduced into the atrium of a patient, so that the occluder is introduced into the atrium of the patient.

The invention relates to the field of vascular interventional therapy equipment, and discloses a balloon-assisted endoscopic system for intravascular direct vision examination, which comprises a catheter, a double-layer capsule pulse assembly arranged at one end of the catheter, a spraying assembly and a dosing and exhausting assembly. An endoscopic device used for imaging and an internal capsule layer used for isolating vibration are arranged in the double-layer capsule pulse assembly, and a high-permeability compliance balloon body used for transmitting energy and a pulse vibration device are arranged outside the double-layer capsule pulse assembly. By arranging the double-layer envelope pulse assembly, mechanical vibration generated by pulse treatment is isolated from the working environment of the endoscopic equipment, and real-time direct-view monitoring is carried out while pulse fragmentation of calcified plaques is realized. Meanwhile, the system integrates the front-end medicine spraying function and the near-end exhaust function, so that multiple steps such as diagnosis, pretreatment and treatment can be completed through single-time instrument operation, the operation process is simplified, and the accuracy and safety of the treatment process are improved.

The device comprises a vomit cup, a collecting bag and two fixing blocks, an opening and closing assembly and a one-way valve are sequentially arranged in the vomit cup from top to bottom, a movable block and a limiting block are sequentially arranged on the outer wall of the lower portion of the vomit cup from top to bottom, and a bag opening of the collecting bag is clamped between the movable block and the limiting block. The upper portions of the two fixed blocks are attached to the movable block, attaching blocks are arranged on the lower portions of the fixed blocks, the attaching blocks of the two fixed blocks are attached to each other to form an annular ring, the collecting bag is located between the annular ring and the vomiting cup, and the bottoms of the attaching blocks are flush with a lower opening of the vomiting cup. The device has the advantages that the opening and closing assembly and the one-way valve can reduce smell diffusion and avoid direct view of vomitus; the movable block and the limiting block are matched to clamp and fix the bag opening of the collecting bag, and are attached to the outer side through the fixing block, so that the vomiting cup is tightly attached to the position close to the bag opening of the collecting bag, vomitus is not prone to being contaminated, and replacement is more convenient and faster.

The utility model provides an impacted tooth extraction bur with length scales, which comprises a bur handle and a bur head, a first scale line, a second scale line, a third scale line and a fourth scale line are respectively arranged on the surface of the bur handle, the bur head is fixedly connected with the bur handle, a groove is arranged on the surface of the bur head, and the first scale line, the second scale line, the third scale line and the fourth scale line are arranged in the groove. A notch is formed in the surface of the needle head at the edge of the cutter groove. Length scales are marked on the impacted tooth extraction bur, so that the working length is accurately evaluated, the depth of the bur sinking into tissues is determined, too shallow cutting is prevented, the cutting efficiency is improved, important anatomical structures such as inferior alveolar nerves and maxillary sinus mucosa are protected, the important anatomical structures are prevented from being damaged by the bur entering too deep positions, and the impacted tooth extraction bur is safe and reliable. And the scales at different intervals are adopted, so that better observation is facilitated, the problem of visual fatigue caused by long-time direct vision is avoided, the working length can be accurately evaluated, and the operation safety is greatly improved.

Dual vision device and associated method The present invention relates to a dual vision device (10) capable of generating, in addition to the direct vision of a user (18), a second vision, independent of the direct vision and located in the upper part of the user's field of vision (18), the device comprising a display assembly (14) carried by a support (12), the display assembly comprising two display units (32) capable of generating the second vision in the upper part of the user's field of vision,Each display unit (32) comprises an eyepiece (36) and a screen (38) chosen such that each display unit (32) forms an image clearly viewable by a separate eye of the user (18) under the following conditions: • the support (12) is inclined such that the image formed by each display unit (32) is viewable only in the upper part of the user's (18) field of vision when the user looks up, and • the distance between the user's (18) eyes and the entrance of the eyepieces (36) is greater than or equal to a predetermined distance, the predetermined distance being chosen to allow the insertion of eyeglasses between the user's eyes and the display unit. Figure for the abstract: Figure 2,

The invention belongs to the technical field of medical instruments, and particularly relates to a disposable uterine curette and a using method thereof.The disposable uterine curette comprises a disposable uterine curette body and a visual instrument, the disposable uterine curette body comprises a handle, a curette rod and a curette head, and the visual instrument comprises a lantern ring, a shifting disc, a connecting piece, a lighting source and a micro camera; the handle is fixed to the right end of the spoon rod, the scraping head is welded and fixed to the left end of the spoon rod, and an arc-shaped groove is formed in the surface of the handle; an arc-shaped groove is formed in the outer side of the handle, an elastic protruding block is integrally formed on the inner wall of the lantern ring, the lantern ring is connected to the outer side of the handle in a sleeving mode and embedded into the arc-shaped groove through the elastic protruding block, the safety, accuracy and thoroughness of the uterine curettage operation are greatly improved through conversion from blind curettage to direct vision, complications such as uterine perforation, incomplete uterine curettage and excessive uterine curettage are effectively avoided, and the uterine curettage effect is improved. Meanwhile, the sterile safety of a disposable instrument is achieved, and remarkable clinical value and popularization prospects are achieved.

The present application relates to a kind of direct vision nerve microvascular nerve decompression operation pad insertion device, and insertion device includes: tube component, guide wire component, decompression pad and push part;Tube component includes sheath tube, balloon and gas delivery component, balloon is set on sheath tube and is close to the front end of sheath tube, gas delivery component is set on sheath tube and is communicated with balloon;Guide wire component is housed in sheath tube, guide wire component includes guide wire, traction line and camera, guide wire is set up snake bone mechanism, the front end of guide wire is stretched from the front end of sheath tube, traction line is at least set up as two, traction line is connected to snake bone mechanism, camera is set to the front end of guide wire;Decompression pad is cylindrical hollow structure, and decompression pad is sleeved on the outside of sheath tube;Push part is sleeved on the outside of sheath tube, for pushing decompression pad towards the front end of sheath tube direction.This application insertion device does not need to repeatedly from opening in and out, simplify the operation of doctor, reduce the operation difficulty, reduce the operation time and reduce the risk of operation.

The invention discloses a manufacturing process of a direct-view mesh basket with a hollow working clamp channel, the mesh basket and a split type mesh basket mold, and relates to the field of lithotripsy instruments.The manufacturing process of the direct-view mesh basket with the hollow working clamp channel comprises the steps that one ends of a plurality of metal wires are fixed to the periphery of a metal shaft core and wound to form a tubular structure, and the other ends of the metal wires are fixed to the periphery of the metal shaft core; the other ends of the metal wires extend out from the end part of the metal shaft core; sleeving an outer layer material on the periphery of the tubular structure and carrying out heat treatment to form a hollow inner tube with a working clamp channel; and winding the metal wires extending out of the metal shaft core in a fixing groove outside the split type mesh basket mold at the end part of the metal shaft core, and shaping to form a mesh basket part. According to the manufacturing process, integrated seamless connection of the mesh basket part and the tube body can be achieved, the radial size of the instrument is optimized to the maximum extent, meanwhile, stone sleeving and stone breaking are synchronously carried out, stone sleeving and stone breaking operation is carried out under direct vision, and the operation efficiency is improved.