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73 results about "Nasal duct" patented technology
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The nasolacrimal duct (sometimes called the tear duct) carries tears from the lacrimal sac of the eye into the nasal cavity. The duct begins in the eye socket between the maxillary and lacrimal bones, from where it passes downwards and backwards.
Punctal plugs for the delivery of active agents
The invention provides punctal plugs for the delivery of active agent to one or both of the tear fluid of the eye and to the nasolacrimal duct. The plugs of the invention have a body, a reservoir contained within the body, and optionally a collarette. The reservoir has at least one opening and contains a polymeric material and at least one active agent.
Owner:JOHNSON & JOHNSON VISION CARE INC
Aqueous humor drainage implant for treatment glaucoma
A first tube (3) and second tube (7) for guiding aqueous humor to the exterior of the eye are connected to each other in the vicinity of a surface of conjunctiva (14) via a first joint (5) and second joint (6). A filter part (9) provided to prevent reflux infection from the exterior to interior of the eye is connected to the second tube (7) via a third tube (8) positioned inside a lower lacrimal canaliculus (23). This enables an aqueous humor drainage implant (1) to be positioned in the eye and the exterior of the conjunctiva with reduced invasiveness. With the aqueous humor drainage implant for glaucoma treatment, the aqueous humor in the eye can be drained to the exterior of the conjunctiva while preventing reflux infection at the viral level, and the intraocular pressure reducing effect can be sustained for extended time periods over the lifespan of the patient. Further, the aqueous humor drainage implant can be readily positioned with reduced surgical invasiveness, while posing no danger of damaging the eye or nasolacrimal duct after the installation.
Owner:JAPAN SCI & TECH CORP
Punctal plugs for the delivery of active agents
The invention provides punctal plugs for the delivery of active agent to one or both of the tear fluid of the eye and to the nasolacrimal duct that comprise a body, at least one cap, and optionally a collarette.
Owner:JOHNSON & JOHNSON VISION CARE INC
Nasolacrimal duct tube used for lacrimal duct reformation operation, and nasolacrimal duct tube instrument
A nasolacrimal stent device illuminates a dark nasal cavity so that the interior of the nasal cavity can be directly observed to facilitate and ensure the correct insertion of a nasolacrimal stent into the nasal duct. Flexible, transparent probe tube segments (21) are connected to the opposite ends of a flexible detention tube segment (2) having a diameter that permits the flexible detention tube segment (2) to be inserted in a lacrimal passage, respectively. The respective extremities of distal end parts (21a, 21b) of the probe tube segments (21) are closed. The probe tube segments (21) are provided in their base end parts with openings (23), respectively. When inserting each probe tube segment (21) into the nasal cavity, an illuminating device, such as an optical fiber (30) is inserted through the opening (23) into the probe tube segment (21) to illuminate the interior of the nasal cavity through the transparent probe tube segment (21). The probe tube segment (21) can be surely caught with a hook and can be pulled out from the nasal cavity. An ultrasonic probe or an endoscope may be used instead of the illuminating device to find the position of the nasolacrimal stent in the nasal cavity.
Owner:TORAY IND INC +1
Degradable medical composite conduit containing functional nano coating and preparation method thereof
InactiveCN101947353AControl release speedImprove toughnessCatheterOther medical devicesDrug releaseMelt extrusion
The invention discloses a degradable medical composite conduit containing a functional nano coating and a preparation method thereof, which is characterized in that the composite conduit is in a three-layer structure, wherein an inner layer and a middle layer are formed through the melt extrusion compounding by a medical-conduit precision extruder, an outer layer is formed by spraying a degradable high-molecular material dissolved with an effective quantity of active medicaments to the outside of a double-layer composite pipe, and the thickness of the outer layer does not exceed 300nm. The conduit not only overcomes the deficiencies of a metal medical conduit, but also well controls the medicament releasing speed and the conduit degrading speed through a composite structure, is mainly applied to the interventional therapies of trachea, bronchus, esophagus, alimentary canals, bile ducts, nasolacrimal ducts and the like and has broad application prospect.
Owner:苏州同科生物科技有限公司
Hydrogel and application thereof
ActiveCN107793579AGood biocompatibilityGood biological stabilityProsthesis(Hydroxyethyl)methacrylatePolyethylene glycol
The invention discloses hydrogel. The hydrogel comprises the following preparation raw materials in parts by weight: 10 to 80 parts of hydroxyethyl methylacrylate, 1 to 20 parts of a crosslinking agent, 10 to 80 parts of water and 0.042 to 36 parts of a reaction releaser, wherein the crosslinking agent is at least one of polyethylene glycol diacrylate, ethylene glycol dimethacrylate and isocyanuric acid triallyl ester; and the reaction releaser is a mixture of a thermal initiator and a catalyst or a photoinitiator. The hydrogel has high hydrophilic performance, has high mechanical property andhas high biocompatibility and stability in a human body. The invention also provides an artificial nasolacrimal duct containing the hydrogel. The artificial nasolacrimal duct has high tear guide efficiency, high biocompatibility and stability, can obtain longer implanting cycle and is not liable to cause rejection and inflammatory response after long-term implantation; and the artificial nasolacrimal duct can be expanded by absorbing water and can achieve the self-fixing effect; and the implanting mode is simple and easy to operate.
Owner:广州锐澄医疗技术有限公司
Artificial nasolacrimal duct and preparation method thereof
ActiveCN107698720AHigh tear guiding efficiencyGood biocompatibilityStentsProsthesis(Hydroxyethyl)methacrylatePolyethylene glycol
The invention discloses an artificial nasolacrimal duct. The artificial nasolacrimal duct comprises the following preparation raw materials in parts by weight: 10 to 80 parts of hydroxyethyl methylacrylate, 1 to 20 parts of a crosslinking agent, 10 to 80 parts of water and 0.042 to 36 parts of a reaction initiator, wherein the crosslinking agent is at least one of polyethylene glycol diacrylate, ethylene glycol dimethacrylate and triallyl isocyanurate; the reaction initiator is a mixture of a thermal initiator and a catalyst or a photoinitiator. The invention further provides a preparation method of the artificial nasolacrimal duct. The artificial nasolacrimal duct has relatively high tear guide efficiency, high biocompatibility and high stability, can obtain longer implantation cycle, andis not liable to cause rejection or inflammatory reaction during long-time implantation; the artificial nasolacrimal duct can be expanded when absorbing water, and achieves a self-fixing effect; theimplantation mode is simple and the operation is facilitated.
Owner:广州锐澄医疗技术有限公司
Apparatus for holding nasal tubes
The present invention relates to a nasal tube holder comprising a conformable body having a nose section and a forehead section, at least one means for holding at least one nasal tube inserted into a patient's nose to the conformable body, and at least one means for holding the conformable body to a patient's forehead. Also disclosed is a method for securing at least one nasal tube to a patient's nose and forehead.
Owner:MASELLA STEPHEN J +1
A dry type food used for aged pet dogs
InactiveCN105519795ALess discomfortKeep healthyAnimal feeding stuffAccessory food factorsGastric DistentionBud
The invention relates to animal feed, particularly a dry type food used for aged pet dogs. The food comprises following components by mass: 1-2% of a black sesame extract product, 2-3% of an oat extract product, 1-2% of a barbary wolfberry fruit extract product, 0.5-1% of a honeysuckle bud and flower extract product, 0.5-1% of a wild chrysanthemum flower extract product, 5-10% of egg white powder, 1-3% of bovine bone powder, 2-5% of pig liver, 1-3% of threonine, 1-6% of calcium lactate, 0.5-1.5% of lysine, 40-60% of meat, 2-5% of vegetables, 1-6% of potassium sorbate, 1-3% of deep-sea fish oil, 0.5-1.5% of animal oil, 0.5-1.5% of a carrot extract product, 3-6% of gelatin, 0.5-0.8% of toosendanin, 1-2% of insect proteins, 1-5% of vitamin C and 1-3% of a food additive, with the balance being corn flour. The food is capable of preventing gastric distention, reducing the occurrence rate of cardiovascular disease, improving baldness, reducing lacrimal gland and nasolacrimal duct abnormity, lowering blood pressure and preventing thrombosis.
Owner:QINGDAO BEIDOUXINGYUN COMM TECH CO LTD
Otolaryngology department patient nasal part medicine applying nursing device
The invention discloses an otolaryngology department patient nasal part medicine applying nursing device. The device comprises a nasal duct, wherein the side face of the right end of the nasal duct isprovided with side holes, the right end of an inner cavity of the nasal duct is provided with a stop part, the outer side face of the left end of the nasal duct is sleeved with a blocking sleeve, theleft end of the nasal duct is transitionally connected with the right end of an end duct, and an external diameter of the end duct is less than that of the nasal duct. The otolaryngology department patient nasal part medicine applying nursing device has the advantages that the structure is simple, the device is matchedly installed through a clamping seat and a needle cylinder, an elastic sleeve presses a syringe needle of the needle cylinder, the sealing performance is strong, the device is not easy to fall off, the stop part can control the switching of the side holes and right end opening,the side holes and the right end opening apply medicine to mucous membrane of the side wall of a nasal cavity and a deep portion of the nasal cavity respectively, the the side holes and the right endopening are switched through a slide seat, the control is convenient, the accuracy of the position of applying medicine is ensured, the waste of medicine liquid is avoided, at the same time, the treatment effect is ensured, the blocking sleeve can support an ala nasi, thereby the depth of medicine applying is controlled, the adjustment is convenient, and the device is applied to nasal part medicine applying nursing of otolaryngology departments.
Owner:苏州创力波科技有限公司
Novel application and preparation method of biological retina
The invention provides a biological retina, which is applied to tissue repair in the field of ophthalmological department. The tissue repair includes glaucoma trabeculectomy, a neovascular glaucoma surgery, uveitic glaucoma, a pterygium surgery, a strabismus surgery, a nasolacrimal duct operation, an orbital surgery, an ocular plastic surgery, a conjunctival scar tissue reconstruction surgery, a burn repair surgery and a corneal ulcer surgery; and the preparation method comprises the following steps: preparing a high-purity type I collagen and glacial acetic acid water solution according to a preset proportion and emulsifying; and vacuumizing the emulsified slurry and freeze-drying the slurry so as to obtain a collagen film having a three-dimensional porous structure. The biological retina disclosed by the invention has beneficial effects that the prepared biological retina, which takes the collagen, as a major ingredient, is good in biocompatibility and biodegradability and is capable of controlling an inflammatory reaction; the high-purity collagen is free from antigenicity and repellency; by virtue of the three-dimensional porous structure, the random and discrete hyperplasia of fibroblasts is guided; and the biological retina can inhibit conjunctival scars and conjunctival contraction, and can keep normal intraocular pressure.
Owner:TIANXINFU (BEIJING) MEDICAL APPLIANCE CO LTD
Punctal plugs for the delivery of active agents
The invention provides punctal plugs for the delivery of active agent to one or both of the tear fluid of the eye and to the nasolacrimal duct. The plugs of the invention have a body, a reservoir contained within the body, and optionally a collarette. The reservoir has at least one opening and contains a polymeric material and at least one active agent.
Owner:JOHNSON & JOHNSON VISION CARE INC
Pet tear stain removal composition, pet tear stain removal product and preparation method thereof
InactiveCN108669333AImprove immunityInhibition of reproductionAnimal feeding stuffEuphrasia pectinataCompanion animal
Relating to the technical field of pet products, the invention discloses a pet tear stain removal composition, a pet tear stain removal product and a preparation method thereof. The pet tear stain removal composition comprises a marigold extract, a green tea extract, a Chinese wolfberry extract, a cranberry extract, a grape seed extract and a euphrasia pectinata extract. The pet tear stain removalproduct comprises the pet tear stain removal composition and an auxiliary material. Through compatibility of the antioxidant substances of the marigold extract, the green tea extract, the Chinese wolfberry extract, the cranberry extract, the grape seed extract and the euphrasia pectinata extract, the pet tear stain removal composition provided by the invention has bacteriostatic properties, can effectively alleviate the pet eye stress, inhibit inflammation, dredge nasolacrimal ducts, mitigate the symptoms of pet tear stains fundamentally, and improve the beauty of pets.
Owner:佛山市雷米高动物营养保健科技有限公司
Periodically degrading type tear drainage rebuilding system
InactiveCN101347365AWith bending resistanceMaintain pressure resistanceStentsEye implantsDiseaseP-dioxanone
The invention relates to a tear drainage reconstruction system that can be regularly degraded. The reconstruction system is made by adopting polydioxanone (PDO) that is a degradable polymeric biomaterial. The system comprises an upper lacrimal duct part, a lower lacrimal dust part, a main lacrimal duct, a concave dacryocyst part and a nasolacrimal duct part. The system has good flexibility, certain elasticity, extensibility, breaking strength and compression strength performance and is a lamella micro-porous tubular structure that integrates stable nasolacrimal duct supporting function, 'tears pump' function, dacryocyst drainage function, 'drug control-release' function, the function of accelerating the fade-away of chronic inflammation of a lacrimal duct and the repairing function of mucous membrane injury of the lacrimal duct together. The reconstruction system has the advantages that an implanting method is a simple and convenient, the fixation in the lacrimal duct is the stable and reliable and the iatrogenic lacrimal duct injury can not appear, the regular degradation can be realized without secondary take-out and the reconstruction system is suitable for various lacrimal duct obstruction diseases and has high curative ratio of the lacrimal duct obstruction, especially, the reconstruction system has the stable and reliable medium-to-long term effect. The tears drainage reconstruction system currently is the only perfect material for high-degree lacrimal duct reconstruction that combines the physiological drainage of the tears with the pathological mechanism of lacrimal injury repair.
Owner:吴文灿 +1
Apparatus for holding nasal tubes
Owner:MASELLA STEPHEN J +1
Venturi negative pressure mask
PendingCN111480906AIncrease the areaInhale easilyProtective garmentSpecial outerwear garmentsAir filtrationExhaust valve
The invention discloses a venturi negative pressure mask. The nose mask comprises filter cloth, a right nasal tube opening, a right nasal tube, a left nasal tube opening, a left nasal tube, a mouth front tube opening, a mouth front tube, a one-way exhaust valve, a nose tip blocking piece and a mask belt. The mask is mainly characterized in that a one-way exhaust valve is arranged in the middle ofthe filter cloth; a mouth front tube is arranged on the inner side of the one-way exhaust valve; the mouth front tube is designed into a venturi tube with a certain gap from the lip of a wearer; certain gaps or gaps are formed between the mouth front tube and the left nasal tube as well as between the right nasal tube and the mouth and nose of a person; according to the venturi principle, during expiration, strong air flow enables negative pressure to be formed around the mouth front tube, the left nasal tube and the right nasal tube. No matter how large the volume of a cavity in front of themouth is, waste gas cannot be diffused in the cavity all the time, the contradiction that the cavity in front of the mouth is small in volume, unsmooth in air filtration, large in volume and low in waste gas replacement rate is well solved, and the ideal wearing effects that the waste gas is completely replaced, and air suction is particularly easy are achieved.
Owner:华子瑞
Bridle system for placing and securing a nasal tube in a patient
A bridle system for placing and securing a medical tube in a patient includes a flexible member having a magnet attached to a first end for insertion into a patient's nose, and a magnetic probe for insertion into a second nare of the nose. The magnetic probe attracts the flexible member magnet to assist in retrieving the first end of the flexible member through the second nare of the nose. The system further includes a receiver for securing the medical tube and the flexible member externally, adjacent the nose to prevent dislodgement by the patient or otherwise. The receiver includes a main body and a cantilever arm extending from the main body, forming an arcuate recess for receiving the tube.
Owner:KIRN DAVID S +1
First aid device
The invention discloses a first aid device. The first aid device comprises a body (1), a display screen (2), a flow control meter (3), a flow setting button (4) and a humidification bottle (5), wherein the humidification bottle (5) is provided with a humidification bottle safety valve (6) and an oxygen uptake pipe joint (7); a nasal duct joint (8), a congestion suction pipe joint (9) and an air guide pipe joint (10) are also arranged above the body (1); the display screen (2) is positioned on the upper part of the body (1). The first aid device has the characteristics of convenience in use and high safety and is suitable for popularization and application.
Owner:董爱芝
Single-row waste gas mask
PendingCN111713772AReduce areaSmooth in and outGarment special featuresProtective garmentMouth skinOral problems
The invention discloses a single-row waste gas mask. The single-row waste gas mask comprises mask filter cloth, a right nasal tube opening, a right nasal tube, a mouth support, a mouth front tube, a mouth front tube opening, a mouth front single-row valve, a nose front single-row valve, a left nasal tube, a left nasal tube opening, a nose support and an elastic mask belt. The single-row waste gasmask is mainly characterized in that a certain gap is formed between the nase support and the left and right nasal tube openings; a certain gap is formed between the mouth support and the mouth fronttube opening; according to the principle of the Venturi effect, when people exhale with mouths or nostrils, waste gas cannot be emitted into the front cavity of the mouth; when people inhale with mouths or nostrils, people can only inhale fresh air entering from the gap between the mouth skin and the mouth front tube opening or fresh air coming from the gap between the nostrils and the left nasaltube opening and the right nasal tube opening, and the problems that an existing mask is difficult to breathe, waste gas circulates, the face is scorched and glasses are atomized are well solved.
Owner:华子瑞
Endopharyngeal airway positive pressure ventilation device
ActiveUS20200101251A1Improve airway patencyEnough timeRespiratory masksMedical devicesSurgical operationNasopharyngeal airway
An endopharyngeal airway positive pressure ventilation device and method of use for ventilating a patient through a nasopharyngeal airway in surgical settings that is incapable of normal ventilation with current anesthetic techniques due to a risk for airway obstruction in surgical procedures requiring conscious sedation monitored anesthesia care (MAC). The invention includes a single-lumen endopharyngeal nasal tube with an eye shaped opening at its distal end and a cylindrical proximal end used as an adaptor for anesthetic applications such as positive airway pressure via JACKSON-REESE modified ambu-bag or other various anesthesiology applications. Contiguous to the distal end of the nasal tube is an end-tidal CO2 monitoring port (ETCO2). On the distal end of the flexible nasal ventilation tube is an eye opening allowing air flow to the posterior pharynx. The device further includes a modified JACKSON-REESE ambu bag which allows for controlled airflow to the patient during a procedure.
Owner:THOMAS DIANA B
Air-injection type lacrimal stent supporting device
The invention relates to an air-injection type lacrimal stent supporting device. The lacrimal stent supporting device comprises a lacrimal stent and an air-injection needle. The lacrimal stent comprises an upper lacrimal ductule part, a lower lacrimal ductule part, a lacrimal sac part, a nasolacrimal duct part and an air-injection hole; the upper lacrimal ductule part and the lower lacrimal ductule part are both of a hollow structure and are communicated with the lacrimal sac part; the lacrimal sac part is communicated with the nasolacrimal duct part; one end of the nasolacrimal duct part is communicated with the lacrimal sac part, and the air-injection hole is formed in the other end of the nasolacrimal duct part. The air-injection needle comprises an air-injection needle body, an air-injection cylinder, an LED lamp, a piston and an LED lamp switch. The air-injection type lacrimal stent supporting device has the advantages that by adjusting the thickness of the stent, inflammatory substances in a lacrimal passage are helped to be washed, and the functions of the sphincter of the lacrimal passage are exercised; the operation is simple and convenient, a patient can operate the supporting device by himself / herself at home, the medical cost is greatly reduced, the epiphora state of the patient can be better improved, the life quality of the patient is improved, and meanwhile, therecurrence rate of obstruction of the lacrimal passage is reduced.
Owner:SHANGHAI TONGJI HOSPITAL
Punctal plugs for the delivery of active agents
The invention provides punctal plugs for the delivery of active agent to one or both of the tear fluid of the eye and to the nasolacrimal duct that comprise a body, at least one cap, and optionally a collarette.
Owner:JOHNSON & JOHNSON VISION CARE INC
Artificial nasolacrimal duct capable of achieving self-expanding fixation
ActiveCN107789093ASelf-fixing effectAchieve a fixed purposeTubular organ implantsTissue regenerationMedicineNasolacrimal duct
The invention discloses an artificial nasolacrimal duct capable of achieving self-expanding fixation. The artificial nasolacrimal duct is of a hollow tubular structure. The inner diameter of the hollow tubular structure is 0.5-1.5 mm, and the outer diameter of the hollow tubular structure is 0.6-4.0 mm: the artificial nasolacrimal duct is made of water absorbent and expansible materials. The artificial nasolacrimal duct is simple in structure, and does not need to be set into a structure with the end size larger than the physiological size of the lacrimal passage so as to achieve the purpose of fixation, the fixation effect is good, and the duct is not easy to fall off after absorbing water and expanding.
Owner:GUANGZHOU SUN SHING BIOTECH CO LTD
Lacrimal canal bracket with aliform fixing part
InactiveCN101406419AGuaranteed uniform shapeShorten the lengthStentsArchitectural engineeringNasolacrimal duct
The invention discloses a nasolacrimal duct bracket for wing-shaped fixed parts, which comprises a drainage tube and at least two wing-shaped fixed parts, wherein one end of the wing-shaped fixed part is fixed at the head end of the drainage tube, while the other end extends radically and obliquely. The nasolacrimal duct bracket for the wing-shaped fixed parts has the advantages that the bracket is convenient to collect tears and drain, can maintain smooth movement of the nasolacrimal duct, has simple manufacture, and so on.
Owner:肖满意
A nursing device for applying medicine to the nose of patients in the department of otolaryngology
ActiveCN108175928BSimple structureGuaranteed accuracySurgeryMedical devicesOtolaryngology/ENTNasal Cavity Epithelium
Owner:苏州创力波科技有限公司
Ophthalmic gel containing travoprost and timolol and preparation method thereof
ActiveCN103977011BHigh clarityImprove stabilityOrganic active ingredientsSenses disorderSide effectIrritation
Owner:SHENYANG XINGQI PHARM CO LTD
Airway and Eye Taping System and Method of Its Use
An airway holder for use in holding an airway device, such as an air or nose tube, has a first pair of wings symmetrically disposed about a center portion and a second pair of wings asymmetrically disposed about the center portion. One of the wings of the second pair of wings has an offset to facilitate that wing wrapping about a portion of the other wing of that pair about the airway device, before then, preferably being adhered to the face of the patient. The airway holder may be provided as a portion of a kit with eye protectors in an effort to remove surgical tape (and subsequent reuse with other procedures to potentially spread contamination).
Owner:KELCOR LLC
Artificial nasolacrimal duct and preparation method thereof
ActiveCN107915812AHigh tear guiding efficiencyGood biocompatibilityProsthesis(Hydroxyethyl)methacrylatePolyethylene glycol
The invention discloses hydrogel. The hydrogel is prepared from the following preparation raw materials in parts by weight: 10 to 80 parts of hydroxyethyl methacrylate, 1 to 40 parts of glycerol, 1 to20 parts of a crosslinking agent, 10 to 40 parts of water and 0.013 to 36 parts of an initiator, wherein the crosslinking agent is at least one of polyethylene glycol diacrylate, ethylene glycol dimethacrylate and triallyl isocyanurate. The hydrogel disclosed by the invention has good hydrophilic performance and relatively strong mechanical properties, and has relatively good biocompatibility andstability in human bodies. The invention further provides an artificial nasolacrimal duct containing the hydrogel disclosed by the invention. The artificial nasolacrimal duct prepared from the hydrogel disclosed by the invention has relatively high tear guiding efficiency and relatively good biocompatibility and stability; a longer implanting period can be obtained and rejection and inflammatoryresponses are not easily caused after the artificial nasolacrimal duct is implanted for a long period; the artificial nasolacrimal duct can be expanded after absorbing water and a self-fixing effect can be realized; an implanting manner is simple and easy to operate.
Owner:广州锐澄医疗技术有限公司
Nasal air filtration device
A nasal air filtration device for filtering air inhaled by a user is disclosed. The nasal air filtration device includes a pair of nostril tubes including a filter at one end and an ionic plate at other end. Each of the nostril tubes includes a cup having a plurality of openings. The nasal air filtration device includes a base tube coupled to the nostril tubes. The base tube includes an exhaust channel. The base tube includes a first housing having a battery and a second housing having a fan. In order to filter the air inhaled by a user, the nostril tubes are placed inside nostrils of the user. When the user inhales, the fan is operated to draw the air into the base tube, and the air is made to pass through the filter and the ionic plate provided at the nostril tubes into the nostrils via the openings. When the user exhales, the air is released into the atmosphere through the exhaust channel via the nostril tubes.
Owner:GRAY ERICK
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