71 results about "Inner Cannula" patented technology

The invention relates to the technical field of medical instruments, in particular to a split type hemorrhoid artery ligation hemorrhoid suspension operation positioning device and application thereof. The device comprises an outer sleeve and an inner sleeve, the inner sleeve is movably and / or rotatably arranged in a cavity of the outer sleeve, the outer sleeve is provided with an outer sleeve operation window, the inner sleeve is provided with an inner sleeve operation window, and the outer sleeve operation window and the inner sleeve operation window can be moved or rotated. The outer sleeve operating window and the inner sleeve operating window are at least partially aligned with each other at at least one operating window position; the outer sleeve and the inner sleeve longitudinally extend to at least partially form a cylindrical or conical or truncated cone-shaped structure, the outer sleeve forms a tubular shell main body and a shell split body along the longitudinal extension direction, and the side edges of the tubular shell main body and the shell split body are detachably connected; an optical unit is arranged on the shell split body so as to irradiate the cavity of the outer sleeve.

The embodiment of the utility model provides a nasopharynx flusher with an inner sleeve structure, and relates to the technical field of flushers, the nasopharynx flusher comprises a main machine and a bottom shell, the bottom shell is installed on the bottom surface of the main machine, a fixing pipe is fixedly connected to the top surface of the main machine, a connecting pipe connected with the main machine is fixedly connected to the fixing pipe, and the connecting pipe is connected with the inner sleeve structure. A first lens is fixedly connected in the fixing pipe, a camera is fixedly connected to the side wall of the fixing pipe, and an inner sleeve is arranged in the fixing pipe in a sleeved mode. During use, one end of the inner sleeve is inserted into the nostril of a patient, the lamp bead is turned on, the flushing function can be achieved during operation of the main machine, in the flushing process, light is reflected to the first lens through the second lens, the camera is used for shooting the first lens, and the shot picture is displayed on the display screen; at the moment, an operator can visually observe the flushing condition through a display screen, and the accuracy and convenience of flushing the nasopharynx of the patient are improved.

An arthroscopic cutting probe includes an outer sleeve having a longitudinal bore and an outer cutting window at its distal end. An inner sleeve is rotationally disposed in a bore of the outer sleeve, and the inner sleeve has a distal end, a proximal end, a longitudinal passageway, and an inner cutting window at its distal. An active electrode sleeve is disposed on an outer surface of the inner sleeve in a position opposed to the inner cutting window. Rotation of the inner sleeve relative to the outer sleeve causes the inner cutting window to rotate past the outer cutting window to resect tissue received through the cutting windows as they pass each other. Radiofrequency current can be applied to the active electrode to enhance tissue cutting then the cutting windows are being rotated or to able or cauterize tissue when the cutting windows are held stationary with the active electrode disposed through the outer cutting window.

The utility model relates to the field of medical equipment, in particular to a metal tracheal cannula capable of being connected with a breathing machine, which comprises a metal cannula, a connector arranged at one end of the metal cannula, a metal inner cannula mounted in the metal cannula and used for being connected with the breathing machine, and a connecting ring mounted on the periphery of one end of the metal inner cannula. The metal inner sleeve is provided with a fixing assembly used for fixing the metal inner sleeve in the metal sleeve. Through the matching design of the metal sleeve, the metal inner sleeve and the connector, a connection mode which is stable in structure and convenient to operate is provided, the metal inner sleeve is fixed in the metal sleeve through the fixing assembly, stability and strength of connection are ensured, and in addition, due to the design of the heating pipe on the fixing ring, the heating efficiency is improved. And the heating pipe is connected with the heating and humidifying functions of the breathing machine, so that gas in the pipeline can be conveniently heated and humidified.

This utility model discloses a multi-segment gradient telescopic needle gauge, including a housing handle with a blind hole at one end, within which a needle gauge assembly is housed. The needle gauge assembly includes an outer tube, inside which multiple inner tubes are sequentially fitted. The inner tubes can extend and retract axially within the outer tube, and the outer tube can also extend and retract axially within the housing handle. A first and second sliding groove are axially offset on the side wall of the housing handle, and a connecting groove is provided on the side wall of the housing handle. A locking block is provided on the side wall of the outer tube, with one end extending out of the housing handle. The locking block can slide within the first and second sliding grooves, and can abut against the end faces of the first and second sliding grooves respectively. A single needle gauge in this utility model can cover multiple sizes, reducing changeover time and making it easy to carry. Furthermore, it eliminates the need for external tools, allowing for size switching with one hand, thus improving operational convenience.

This invention discloses an anti-fog and heat-insulating puncture device for thoracoscopic surgery, belonging to the field of medical device technology. Its key technical features include: an outer sheath, with a puncture assembly on its inner wall, the puncture assembly including a puncture needle core that slides through the inner wall of the outer sheath, a needle core handle fixedly connected to the upper end of the puncture needle core, a needle tip fixedly connected to the lower end of the puncture needle core, an outer sheath seat fixedly connected to the upper outer wall of the outer sheath, a fixing handle fixedly connected to the outer wall of the outer sheath seat, and a sealing assembly on the outer wall of the outer sheath seat. This invention achieves heat insulation through a double-layer structure formed by the outer and inner sheaths; gas circulation is formed through the cooperation of the air inlet and outlet holes, effectively expelling fog from the inner wall of the inner sheath and ensuring a clear surgical field; the sealing valve and sealing sleeve achieve internal sealing of the outer sheath to prevent gas leakage; the sealing ring is precisely positioned by positioning pins and positioning holes, and the sealing cap is stably installed by locking blocks and protruding pins, providing double sealing to prevent gas leakage and impurity entry, reducing the risk of infection.

The perfused endoluminal suction inner cannula system for tracheostomy tubes can be a suction-powered system that can be used to suction tracheostomy tubes alone or in combination with rinsing and endoluminal suction, replacing traditional catheter-based endoluminal suction. The inner cannula contains chambers, or regions, and holes that facilitate endoluminal suction and irrigation at multiple locations within the tracheostomy tube. It can be applied / activated by the patient, a healthcare professional, a caregiver, or via an electronic system in either an inpatient / hospital or outpatient / ambulatory care setting, on an as-needed basis, or periodically or at set activation intervals.

An optical sleeve system may include a sleeve, a body, a first tube, a second tube, and a valve assembly. An outer sleeve wall may define an internal space extending along the axis of the sleeve. One or more inner sleeve walls within the outer sleeve wall may divide the internal space into a first channel and a second channel. A proximal portion of the sleeve may be received within the body. The first and second tubes may extend from the body. The valve assembly may have a first configuration in which the first tube is in fluid communication with the first channel and the second tube is in fluid communication with the second channel. The valve assembly may have a second configuration in which the first tube is in fluid communication with the second channel and the second tube is in fluid communication with the first channel.

The grouting assembly of the grouting sleeve comprises the grouting sleeve, a grouting pipe is arranged at the bottom of one end of the grouting sleeve, a grouting device is installed on the grouting pipe, a grout outlet pipe is arranged on the portion, above the grouting pipe, of the grouting sleeve, and a plugging device is installed on the grout outlet pipe. Compared with the prior art, the utility model has the following beneficial effects: through the arrangement of the outer sleeve and the inner insertion pipe, when in use, the inner insertion pipe is accurately inserted into a grout outlet pipe or a grouting pipe, and meanwhile, the outer sleeve is tightly sleeved on the outer side of the grout outlet pipe or the grouting pipe, so that the design of the double-sealing structure is very exquisite, and the inner insertion pipe is tightly attached to the inner wall of a pipeline; and the outer sleeve is further wrapped from the outside to effectively prevent slurry from seeping, so that material waste caused by slurry leakage can be avoided, the cleanliness of a construction site environment can be ensured, and the difficulty of subsequent cleaning work is reduced.

The utility model relates to the technical field of medical instruments, and provides a turbinate blood taking needle guard which comprises a three-edged needle, and an inner sleeve used for fixing the three-edged needle is arranged on the outer side of the three-edged needle in a sleeved mode. According to the turbinate blood taking needle sleeve, a three-edged needle inserted into the inner sleeve can be more conveniently fixed through the clamping plate in the inner sleeve, the three-edged needle can be more conveniently replaced, the three-edged needle is driven by the inner sleeve to slide in the outer sleeve, the exposed length of the three-edged needle is adjusted, and due to the fact that tail thorns on the inner sleeve are clamped through the adjusting ring, the tail thorns can be conveniently fixed and replaced. When the adjusting ring slides on the outer sleeve, the inner sleeve can be driven to slide to a proper distance in the outer sleeve, and the adjusting ring can be fixed on the outer sleeve through the fixing assembly on the adjusting ring, so that the outward leakage length of the three-edged needle is fixed, and the distance of the three-edged needle in the outer sleeve through the inner sleeve can be checked through the visual window. The convenience of adjusting the push-out distance of the three-edged needle by the whole needle sleeve is improved.

The invention belongs to the technical field of medical instruments, and discloses an articular cavity continuous lavage device which comprises a double-cavity drainage perfusion assembly and a fixing lantern ring. The double-cavity drainage perfusion assembly comprises an inner sleeve, the outer side of the inner sleeve is coaxially connected with an outer sleeve in a sleeving mode, a drainage channel is defined between the outer wall of the inner sleeve and the inner wall of the outer sleeve, and a flow channel in the inner sleeve is a perfusion channel; a plurality of lateral micropores are formed in one end of the inner sleeve, the other end of the inner sleeve is detachably connected with the perfusion device through a first connector, and the end, away from the lateral micropores, of the drainage channel is detachably connected with a drainage bag through a second connector; the fixing lantern ring is arranged on the outer side of the outer sleeve in a sleeving mode, fixing wings are arranged on the two sides of the fixing lantern ring, and suture holes are formed in the fixing wings. The technical problems that a catheter of an existing lavage device is prone to being blocked, fixation is not firm, and the joint fluid drainage extraction efficiency is low are solved.

The application relates to a blocking device, which comprises a first part, the first part comprising a plurality of braided wires and a convergence element, one end of the plurality of braided wires being fixed to the convergence element, the first part having at least one disc surface, the convergence element comprising a hollow and sleeved inner sleeve and outer sleeve, at least a part of the disc surface of the proximal end of the first part near the convergence element being perpendicular to the central axis of the convergence element, so that a relatively flat disc surface is formed near the convergence element. The blocking device of the application can form a relatively flat disc surface near the convergence element, that is to say, there is no obvious convex part on the surface of the disc surface, blood flow near the convergence element is prevented from forming a thrombus, and the safety of the blocking device is improved.

A single-port surgical device includes a housing and one or more cannulas. The housing includes a proximal port and a distal port, the one or more cannulas include an inner cannula section and an outer cannula section, the inner cannula section is located in the housing and communicates with the distal port of the housing, the outer cannula section is located outside the proximal port of the housing, and at least a portion of the outer cannula section of at least one cannula of the one or more cannulas is deformable in a radial direction, an axial direction or the radial direction and the axial direction of the outer cannula section.

The present application relates to intervertebral fusion holder medical instrument technology field, specifically speaking, a kind of holder and holding method, the holder includes screw rod, inner sleeve, outer sleeve, knob, locking block, the front end of the outer sleeve is equipped with with the inner support block of fusion ware middle clamping connector, the outer sleeve is equipped with inner sleeve, inner sleeve and outer sleeve sliding do not rotate connection, inner sleeve rear end stretches out outer sleeve and is connected with knob screw, the rear end surface of inner sleeve is equipped with fixed tooth, screw rod is inserted into inner sleeve, the front end of screw rod stretches out outer sleeve, the rear end of screw rod stretches out inner sleeve and is equipped with locking block, the front end surface of the locking block is equipped with with the locking tooth of fixed tooth meshing, by the assembly of holder, fixed inner support block, fixed outer expansion block, locking, inner support block advance, disengage, bone grafting etc. Step is used, with simple structure, holding effect is good, holding operation is simple, and it has advantages such as improving bone grafting efficiency.

A drainage tube assembly with an inner sleeve for flushing relates to the technical field of medical instruments and comprises an outer sleeve and the inner sleeve, the head of the far end of the outer sleeve is closed inwards in an arc shape, a plurality of side holes used for draining seepage are formed in the tube wall of the far end of the outer sleeve, a drainage bag connector and a manifold communicated with a tube cavity of the drainage bag connector are arranged at the near end of the outer sleeve, and the manifold is communicated with the drainage bag connector. A steering strip is fixed in a far-end tube cavity of the outer sleeve, a cross-shaped silica gel valve is arranged at a manifold opening, a pull rope is wound on the steering strip, the two ends of the pull rope penetrate through the cross-shaped silica gel valve and extend to the outside of the manifold, a pull ring is fixed to one end of the pull rope, the other end of the pull rope is fixedly connected with the inner sleeve, the inner sleeve is provided with two tube cavities, and the two tube cavities are communicated with each other. The two cavities are respectively a liquid inlet cavity and a liquid extraction cavity. The assembly provided by the utility model is suitable for clinical drainage.

The invention discloses a pipeline elbow protection system and a working method thereof. The pipeline elbow protection system comprises a protection sleeve and a bending sensor. The protective sleeve comprises an inner sleeve and an outer sleeve shell, the elbow is sleeved with the inner sleeve, the inner sleeve is tightly attached to the outer wall of the elbow, a buffering cavity is formed between the outer sleeve shell and the inner sleeve, and a supporting frame and a buffering base body are arranged in the buffering cavity; the support frame has bending deformation in the buffer cavity, the buffer cavity is provided with an open port communicated with the outside, and the bending sensor is connected with the support frame through the open port; a locking assembly is arranged on the outer sleeve shell, and when the locking assembly is loosened, the bending sensor can measure the bending change of the supporting frame. The supporting frame is composed of a plurality of separating rings and a plurality of connecting ribs, and the extending direction of the connecting ribs is consistent with the extending direction of the elbow. The support frame with bending deformation is arranged in the protective sleeve, and the bending change of the support frame is detected through the bending sensor, so that whether the protective sleeve is loosened or not is judged.

The invention relates to the technical field of tip caps, in particular to a tip cap of a digestive endoscopy, which comprises an endoscope lens, an auxiliary tube is fixedly arranged on one side of the endoscope lens, the height of the auxiliary tube is lower than that of the endoscope lens, an inner sleeve is mounted on the outer surface of the endoscope lens in an inserting manner, and the inner sleeve is sleeved on the outer surface of the endoscope lens. An outer soft end cap is installed outside the inner sleeve in an inserted mode, and a buckle extrusion mechanism is arranged between the outer soft end cap and the inner sleeve. According to the tip cap of the digestive endoscope, when the tip cap is installed, the inner sleeve needs to be inserted into the endoscope head in advance, the inner plastic sleeve is inserted into the inner sleeve, the inner sleeve can be extruded and deformed by the inner plastic sleeve, the anti-skid tooth points can be inserted into the outer surface of the endoscope head so as to increase firmness, and the positioning teeth and the inner plastic sleeve are clamped so that the tip cap can be installed conveniently. The inner sleeve and the inner plastic sleeve can be fixed together, the outer soft end cap can be firmly fixed to the outer surface of the endoscope head, and the possibility that the outer soft end cap falls off in the using process is reduced.

A joint fusion preparation assembly having a self-centering, non-rigid, "floating"cutting blade deployable to a target site in a minimally invasive procedure is disclosed herein. The joint fusion preparation assembly includes an outer cannula or access conduit, an inner sleeve, a cutter component, and a bone drill component. The outer cannula includes a distal abutment surface configured to register the distal end of the outer cannula against a bony surface and a spring-loaded locking element configured to securely engage with the inner sleeve to maintain the inner sleeve at a desired position. The inner sleeve is configured for insertion into the outer cannula and includes a spring-loaded locking element configured to securely engage with the cutter component and / or the bone drill component to maintain the cutter and / or bone drill in a desired position during use.

The utility model discloses an air lift reverse circulation double-wall drilling tool used in cooperation with an air compressor, and relates to the field of drilling equipment. The device comprises an outer pipe and an inner pipe which are coaxially arranged, the inner pipe comprises an inner sleeve and an outer sleeve which are coaxially and detachably connected in a sleeved mode, the bottom face of the inner sleeve protrudes out of the bottom face of the outer sleeve, the top face of the outer sleeve protrudes out of the top face of the inner sleeve, and the protruding height of the top face of the outer sleeve is not larger than that of the bottom face of the inner sleeve; alignment rings are evenly arranged on the outer sleeve in the height direction, the alignment rings are in threaded connection with the inner pipe wall of the outer pipe, and circulation holes are evenly formed in the alignment rings in the circumferential direction. The utility model has the beneficial effects that the inner pipe is formed by sleeving the outer sleeve and the inner sleeve, the strength of the inner pipe is enhanced, and the outer convex structures of the outer sleeve and the inner sleeve form a plug-in structure, so that the inner pipe is convenient to disassemble and maintain, the disassembly and maintenance efficiency is improved, and the use flexibility and high efficiency are ensured.

The present disclosure provides medical devices and methods for using said medical devices. In particular, the present disclosure provides biopsy devices wherein the protrusion distance of the inner sty let can be selected and an integrated depth stop member is configured to allow the device to align with a single length guide cannula in accordance with the selected protrusion distance.

The utility model relates to the field of medical instruments, in particular to a suturing device for a ciliary body operation, which comprises a sleeve and a push rod movably arranged in the sleeve. The device further comprises a thin hook assembly, a thin tube is arranged on the sleeve, and the thin hook assembly is connected with the push rod and movably arranged in the thin tube. A telescopic operation tool similar to a syringe is composed of a sleeve and a push rod, the thin tube is used for puncturing the sclera, the provided telescopic driving thin hook assembly grabs and pulls an operation line, a traditional sclera operation incision is abandoned, sclera trauma in the operation and the bleeding probability in the operation are greatly reduced, the influence on corneal refraction is reduced, the operation speed is increased, and the operation efficiency is improved. The operation time is shortened, the occurrence probability of postoperative complications and the postoperative nursing difficulty are reduced, and the postoperative recovery speed is increased.

The invention relates to the technical field of medical instruments, in particular to an ultrasonic probe. The device comprises an inner sleeve and an outer sleeve which are provided with tubular shells, each tubular shell is of a hollow structure with at least one open end, the inner sleeve and the outer sleeve can be independently or jointly inserted into the anal tube rectum of a patient, and an ultrasonic transducer is arranged on the inner sleeve or the outer sleeve. The inner sleeve is rotatably and detachably sleeved in the inner cavity of the outer sleeve, and the outer circumferential surface of the inner sleeve is in clearance fit with the inner circumferential surface of the outer sleeve; a lock-catch-free magnetic attraction coupling structure is arranged at one end, corresponding to the opening, of the inner sleeve and the outer sleeve, and the lock-catch-free magnetic attraction coupling structure keeps the inner sleeve in the inner cavity of the outer sleeve through magnetic attraction acting force. The ultra-short-distance wide-angle effect is achieved through the lock-catch-free magnetic attraction coupling structure of the inner sleeve and the outer sleeve, the conical sleeve structure and the optimized included angle design, the operation distance is shortened to 65 mm, and the chopstick effect is avoided.

The utility model discloses a fallopian tube interventional therapy suite, which relates to the field of fallopian tube interventional therapy and comprises an outer sleeve, a guide nozzle is integrally formed at one end of the outer sleeve, an inner cavity of the guide nozzle is communicated with an inner cavity of the outer sleeve, a transition conical surface is formed at the connection position of one end of the guide nozzle and the outer sleeve, and the transition conical surface is communicated with the guide nozzle. A balloon is integrally formed on the outer wall of the other end of the outer sleeve, an inner sleeve is inserted into the inner wall of the outer sleeve, a corrugated pipe is fixedly connected to one end of the inner sleeve, a straight pipe is fixedly connected to one end of the corrugated pipe, and a wire feeding assembly is connected to one side of the inner wall of the inner sleeve, one side of the inner wall of the corrugated pipe and one side of the inner wall of the straight pipe. A memory assembly is connected to one side of the inner wall of each of the inner sleeve, the corrugated pipe and the straight pipe. By arranging the wire feeding assembly and the memory assembly, the angle of the straight pipe can be actively adjusted by medical staff, the adjusting process is convenient, and the applicability is further improved.

The application relates to the technical field of medical devices, and discloses a catheter device with a function of measuring pharyngeal cavity pressure, which comprises a control console, a filling pipe is slidably arranged on the left inner wall of the control console, the left end of a plug pipe is fixedly connected to the right end face of the filling pipe, and a detection assembly is arranged in the control console. The catheter device with the function of measuring pharyngeal cavity pressure is provided with the detection assembly, the air pipe arranged between the catheter and the inner sleeve pipe is matched, the injected water is separately controlled from the opening and closing inside the balloon, the independence of the water injection in the balloon is ensured, the pressure sensor can be arranged in the balloon, the measurement accuracy is improved, the conduction range of the water in the balloon after being pressed can be limited, the measurement of the pressure sensor is more accurate, and the treatment effect and efficiency are improved.

This utility model relates to the field of plastic fastener technology, and more particularly to a snap-fit ​​plastic part that is easy to assemble. The snap-fit ​​plastic part includes an outer tube, an expansion head, a guide assembly, a trapezoidal push block, and a drive assembly. An inner tube is installed inside the outer tube, and an expansion head for easy assembly is installed at the end of the outer tube. A guide assembly is installed between the inner tube and the expansion head. The snap-fit ​​plastic part provided by this utility model significantly reduces the initial alignment difficulty through the synergistic effect of the expansion head and the guide assembly. The expansion design of the expansion head increases the inlet area of ​​the outer tube, allowing the guide rod of the inner tube to enter the guide groove under the guidance of the expansion ramp even with slight angular deviations. The smooth transition between the tapered guide groove and the slide groove achieves automatic centering of the inner tube, completing pre-positioning without precise manual adjustment, shortening the single assembly time, significantly improving assembly efficiency, and reducing labor costs.

An intermittent-catheter assembly (100) includes an intermittent catheter and a catheter housing (102). The intermittent catheter includes a funnel and a catheter tube fluidly coupled to the funnel. The catheter housing (102) includes the intermittent catheter disposed in the catheter housing while in a packaged state of the intermittent-catheter assembly. The catheter housing includes an inner sleeve (104) and an outer sleeve (102). The inner sleeve (104) includes a longitudinal cavity containing a majority of the intermittent catheter in the packaged state of the intermittent-catheter assembly. The outer sleeve (106) is slidably disposed over the inner sleeve (104). The catheter housing (102) is configured to expose the intermittent catheter for removal from the catheter housing (102) when the outer sleeve (106) is grasped and slid toward an exposed end of the inner sleeve (104) in opposition to a force applied to the exposed end of the inner sleeve (104).

The utility model discloses a sealing and distributing integrated device, and belongs to the technical field of oilfield water injection. The device is provided with an upper joint, an inner inserting pipe and an upper connecting sleeve connected to the lower part of the upper joint, the inner inserting pipe is sleeved with the center pipe, the center pipe is connected to the bottom end of the upper connector, and the lower connector is arranged at the bottom end of the center pipe. The sealing assembly and the piston are sequentially connected to the lower portion of the upper connecting sleeve. The inner wall of the piston is hermetically connected with the outer wall of the lower joint; the sealing assembly is provided with a supporting pipe, the outer wall of the supporting pipe is sleeved with a rubber sleeve capable of being extruded by axial force to deform, and a locking mechanism is arranged at the bottom end of the supporting pipe. In the working state, under the driving of the central pipe, the piston moves upwards to generate axial force to extrude the rubber sleeve to seal an oil sleeve annulus in a diameter expanding mode, the rubber sleeve is locked through the locking mechanism, the rubber sleeve can be kept in the sealing state, and the sealing and matching integrated device can meet the purpose of effectively packing a water injection well section in a shaft.

The invention relates to the technical field of medical instruments, in particular to a hemorrhoid artery ligation hemorrhoid suspension operation device. The device comprises a sleeve shell, the sleeve shell is composed of an inner sleeve and an outer sleeve, an ultrasonic transducer is arranged on the sleeve shell, and the inner sleeve is movably and / or rotatably arranged in a cavity of the outer sleeve; an outer sleeve operation window penetrating through the side wall is formed in the side wall of the outer sleeve, and an inner sleeve operation window penetrating through the side wall is formed in the side wall of the inner sleeve; the inner and outer sleeve operation windows can be moved or rotated to form a ligation window or a hemorrhoid suspension fixing operation window; a rotary fixing part is arranged at the near end of the outer sleeve and / or the near end of the inner sleeve, so that the inner sleeve rotates in the cavity of the outer sleeve and is fixed in the cavity of the outer sleeve, and the inner sleeve is prevented from moving in the length direction of the inner sleeve. By ingeniously arranging the rotary fixing part, the inner sleeve and the outer sleeve can rotate relatively to achieve flexible hanging and fixing of the hemorrhoids, meanwhile, it can be guaranteed that the inner sleeve and the outer sleeve are not separated from each other in the operation, and safety is guaranteed.

The embodiment of the application provides a nasal introducer and surgical instrument, relates to the technical field of implanting instrument, and solves the problem that the front end of the eustachian balloon is easy to scratch the human body tissue in the pushing process in the prior art. The nasal introducer comprises a fixing device, a pushing tube and an elastic piece, the fixing device comprises a sliding part and an inner sleeve, the inner sleeve is provided with a containing chamber, the pushing tube is in plug-in cooperation with the fixing device, a groove is formed in the wall of the pushing tube, the sliding part is used for sliding in the groove, the elastic piece is arranged in the groove, one end of the elastic piece is connected with the bottom wall of the groove, and the other end of the elastic piece is connected with the top end of the sliding part. When the front end of the eustachian balloon in the embodiment of the application touches the human body tissue, the front end of the eustachian balloon will rebound, and the human body tissue will not be directly scratched, so that when the pre-detection is inaccurate, the human body tissue is directly scratched, the eustachian tube tissue is protected, and the risk of the operation is effectively reduced.

An irrigated endoluminal aspiration inner cannula system for a tracheostomy tube may be an aspiration drive system that may be used alone for aspiration, or in combination with irrigation and endoluminal aspiration for a tracheostomy tube, instead of traditional catheter endoluminal aspiration. The inner cannula includes a plurality of chambers (or regions) and apertures that facilitate intraluminal aspiration and cleaning at a plurality of locations within the tracheotomy tube. The system can be operated / driven by a patient, a medical person, a caregiver or on demand, at regular or at trigger intervals through an electronic system in a hospitalization / hospital or outpatient / daytime care environment.