19 results about "Lacrimal punctum" patented technology

Disclosed herein are embodiments of a plug for occluding the lacrimal drainage system. The plug can have a body portion having a first end and a second end, a tapered portion extending away from the second end of the body portion, the tapered portion having a conical shape, and a rounded distal tip. The body portion can have a continuous cylindrical shape between the first end and the second end thereof, and can be shaped such that the first end is planar and is orthogonal to a plug's longitudinal axis. Additionally, in some embodiments, the plug can be configured to occlude a vertical canaliculi of the lacrimal drainage system. For example and without limitation, some embodiments of the plug can be configured to be inserted completely within the vertical canaliculi of the lacrimal drainage system so that no portion extends outside of punctal opening.

The present disclosure provides devices and methods for the treatment of ophthalmological conditions such as dry eye. Among the devices provided are punctal plugs and devices for inserting punctal plugs. The punctal plugs may be shaped for insertion in the punctum and / or the canaliculus. They may also be coated with a bioadhesive. Methods for inserting the punctal plugs are provided, as well as methods for preparing bioadhesive-coated punctal plugs. A method is also provided to treat dry-eye using a bioadhesive without use of a punctal plug.

The utility model relates to the technical field of medical instruments, in particular to a lacrimal passage flushing device with a drainage function. In the process of flushing the lacrimal passage of a patient, the flushing pipe and the drainage pipe enter the lacrimal passage of the patient at the same time. The flushing fluid is conveyed to the lacrimal passage of the patient through the flushing pipe by an external pumping device, so that the lacrimal passage of the patient is flushed by the flushing fluid. In the process of flushing the lacrimal passage of the patient, backflow flushing fluid enters the drainage tube through the drainage inlet and then flows out of the lacrimal passage of the patient from the drainage outlet through the drainage tube. The flushing fluid is drained through the drainage tube, so that the flushing fluid is prevented from flowing out of the punctum of the patient. In this way, flushing fluid is drained in the lacrimal passage flushing process, so that the flushing fluid is prevented from making contact with the eyes of a patient again, and the risks of inflammation and infection of the eyes of the patient are reduced.

The application provides an anastomotic orifice shaping tube for dacryocystorhinostomy, which comprises a lacrimal passage guide tube and an inflatable support sleeve, one end of the lacrimal passage guide tube is fixedly connected with a probe, the other end is provided with a lacrimal point fixing plug which is detachably connected, a positioning point and a fissure are arranged in the middle of the lacrimal passage guide tube, the fissure is arranged between the positioning point and the lacrimal point fixing plug, the inflatable support sleeve comprises a hollow main shaft and an inflatable layer which is wrapped on the shaft surface of the hollow main shaft, and the lacrimal passage guide tube penetrates through the hollow main shaft in the use state; the anastomotic orifice shaping tube can be fixed to the anastomotic orifice and conveniently taken out, can provide sufficient support for the anastomotic orifice, and can be micro-plastic shaped according to the shape of the anastomotic orifice to make the lacrimal sac mucosa and the nasal mucosa produce sufficient contact, which is beneficial to incision healing and anastomotic orifice formation.

This invention provides an auxiliary device for lacrimal duct prosthesis placement in cases of lacrimal punctum stenosis. The device includes a guide tube and a tapered guide head located at the lower end of the guide tube. The guide tube comprises a left half and a right half disposed opposite each other, with an elastic clamping portion connected above the left and right half tubes. The left and right half tubes are openable and closeable via the elastic clamping portion. An arc-shaped left groove and a right groove are formed along the length direction on opposite sides of the left and right half tubes, respectively. The left and right grooves can be joined to form a receiving cavity. The tapered guide head includes a left guide head and a right guide head connected to the lower ends of the left and right half tubes, respectively. The left and right guide heads can be closed and connected. Compared to existing lacrimal duct prosthesis implantation aids, this invention's lacrimal duct prosthesis placement auxiliary device is simple to operate and allows for gentle, stepwise expansion, effectively reducing damage to ocular tissues.

The invention provides a self-anchored lacrimal passage drainage device for lacrimal ductule fracture repair, which comprises a skeleton probe, the skeleton probe comprises a nickel-titanium alloy skeleton, and one end of the nickel-titanium alloy skeleton is located in an inner hole of a lacrimal passage drainage tube main body; a lacrimal point fornix part is arranged at one end of the lacrimal passage drainage tube body, a handle and a lacrimal point expansion conical head are sequentially arranged at the end, away from the lacrimal point fornix part, of the nickel-titanium alloy framework, one end of a short tube is arranged on the lacrimal passage drainage tube body, the short tube is close to the lacrimal point fornix part, and a right angle is formed between the short tube and the axis of the lacrimal passage drainage tube body. The other end of the short tube is provided with an anchoring end, the anchoring end is of an umbrella-shaped valve structure, the center of the anchoring end is provided with a lacrimal point administration hole, and the lacrimal point administration hole is communicated with an inner hole of the lacrimal passage drainage tube body through the short tube. The three-dimensional mechanical lock catch type anchor section at the head end of the silica gel drainage tube is adopted, and single-step permanent fixation is achieved at the punctum fornix part; a nickel-titanium skeleton-lacrimal passage drainage tube body preassembled design is adopted, and one-time precise implantation is achieved.

The present invention discloses a minimally invasive lacrimal punctum dilator, comprising: a conical head end and an expansion cone; the expansion cone has a large head end and a small head end along its axis, the conical head end is arranged at the small head end of the expansion cone; the large head end of the expansion cone is connected to the inner cylindrical section of the lacrimal punctum cannula, and the inner cylindrical section of the lacrimal punctum cannula is connected to a gripping portion; and the lacrimal punctum cannula, which includes a lacrimal punctum cannula wall and a lacrimal punctum cannula adaptation surface; the lacrimal punctum cannula wall is sleeved and arranged on the inner cylindrical section of the lacrimal punctum cannula; the lacrimal punctum cannula wall has a lacrimal punctum cannula adaptation surface near the expansion cone end. Through the above-mentioned method, after the lacrimal punctum is expanded, the lacrimal punctum cannula is supported in place, has high stability, and is free of friction resistance caused by lacrimal punctum contraction. The lacrimal duct probe is easy to enter and exit without resistance, so that the resistance position is clear when the lacrimal duct is probed, and the blockage position is easy to determine. At the same time, the lacrimal punctum is expanded in one step as needed, without additional damage to the lacrimal punctum, and tissue damage is reduced.

A punctum plug or lacrimal insert is constructed of a monolithic material, such that the punctum plug is configured to turn approximately 90 degrees upon insertion into a canaliculus of an eye. The punctum plug or lacrimal insert may include high-molecular-weight polysaccharide and added plasticizers.

The utility model provides a lacrimal passage flusher for the ophthalmology department. The lacrimal passage flusher for the ophthalmology department solves the problems that an existing lacrimal passage flusher for the ophthalmology department is inconvenient to operate and long in flushing time. The lacrimal passage flusher for the ophthalmology department comprises an injector, a flushing pipe connected with the injector and an expansion head arranged at the liquid outlet end of the flushing pipe, the expansion head is of a conical structure, the conical top of the expansion head is a smooth arc-shaped blunt end, the outer surface of the expansion head is in smooth transition with the outer surface of the flushing pipe, and a liquid guide structure communicated with the flushing pipe is arranged on the expansion head. After the expansion head expands the lacrimal punctum, flushing fluid in the injector can enter the lacrimal passage through the flushing pipe and the liquid guide structure. Due to the fact that the liquid guide structure is arranged on the expansion head, after the expansion head expands the lacrimal punctum, flushing liquid can be injected into the lacrimal passage without retreating the expansion head, and the cleaning efficiency is greatly improved.

The present disclosure provides devices and methods for the treatment of ophthalmological conditions such as dry eye. Among the devices provided are punctal plugs and devices for inserting punctal plugs. The punctal plugs may be shaped for insertion in the punctum and / or the canaliculus. They may also be coated with a bioadhesive. Methods for inserting the punctal plugs are provided, as well as methods for preparing bioadhesive-coated punctal plugs. A method is also provided to treat dry-eye using a bioadhesive without use of a punctal plug.

1. Name of the designed product: slippers (tearful eyes). 2. Use of the designed product: for daily wear. 3. Design points of the designed product: in shape. 4. Picture or photo best showing the design points: perspective view.

The utility model discloses a punctum plug, which relates to the technical field of medical machinery and comprises a middle shaft, a conical head is arranged at one end of the middle shaft, an arc top is arranged at the other end of the middle shaft, a concave hollow groove is arranged between the conical head and the middle shaft, and a lower cambered surface with a slope-shaped cross section is arranged on one side of the conical head, which is positioned on the hollow groove. A spherical groove with a circular cross section is formed in the root of the hollow groove; a concave upper cambered surface is arranged on one side, corresponding to the conical head, of the arc top. The thickened lower cambered surface is arranged in the hollow groove, the spherical groove is formed in the bottom of the hollow groove, the supporting strength of the side portion of the conical head can be effectively improved, deformation of the conical head is avoided, the risk of cracking of the conical head is reduced, and the lacrimal point plug can be conveniently placed into the lacrimal passage. The upper portion of the conical head and the lower portion of the arc top can be tightly clamped and attached to the lacrimal passage tissue, and the risk that the punctum plug falls off can be reduced.

The invention relates to the technical field of lacrimal passage irrigation, in particular to a lacrimal passage irrigation needle head with a hose, which comprises a holding outer tube, an irrigation needle assembly and an expander, the expander is arranged in the holding outer tube along the axial direction of the holding outer tube, a containing through hole is formed in the expander along the axial direction in a penetrating manner, and the expander comprises a main body part and a rotating part; the rotating part is rotatably connected to the front end of the main body part, the main body part can axially move along the holding outer tube, and the flushing needle assembly is arranged in the containing through hole; the front end of the rotating part is used for opening the lacrimal punctum by rotating the rotating part, the front end of the flushing needle assembly can be exposed by moving the main body part towards the rear end, and the flushing needle assembly can flush the lacrimal passage. According to the technical scheme, the front end of the rotating part finds the lacrimal punctum by adjusting the rotating part, and when the lacrimal punctum is found and opened, the front end of the flushing needle assembly is exposed by moving the position of the main body part in the holding outer tube, so that a lacrimal passage is flushed through the flushing needle assembly.

Disclosed in certain embodiments is a cannular injection applicator device comprising a body forming a cavity and a cannula coupled to a first distal end of the body. The cannula forms a channel aligned with the cavity of the body. The cannula is configured to store an intra-cannular injection in the channel. The intra-cannular injection applicator device further includes a tip structure coupled to the body. A tip structure is disposed about at least a portion of the cannula. The distal end of the tip structure is configured to dilate the punctum by inserting the distal end of the tip structure into the tubule via the punctum. The intra-cannular injection applicator device further includes an actuation structure configured to push an intra-cannular injection through the channel and the distal end of the tip structure into the tubule via the punctum.

The utility model relates to the technical field of punctum dilators, and discloses a punctum dilator with scales, which comprises a handle, a cone and a connecting structure, an inner tube is fixedly mounted in the handle, the cone is detachably mounted at the end of the inner tube through the connecting structure, a limit tube sleeve is slidably arranged in the handle, and the limit tube sleeve is detachably mounted at the end of the inner tube through the connecting structure. A communicating groove is formed in the top of the handle, the cone is sleeved with the limiting pipe sleeve, a connecting piece is fixedly installed at the end, away from the cone, of the limiting pipe sleeve, and the end, away from the limiting pipe sleeve, of the connecting piece extends out of the communicating groove. And the friction force between the friction plate and the friction pipe can provide a damping sense when the anti-skid grip is pulled to adjust the position of the limiting pipe sleeve, so that the situation that the limiting pipe sleeve cannot be adjusted in place for many times due to hand shaking during adjustment is avoided.

The utility model belongs to the technical field of medical instruments, and provides a lacrimal passage probe matched with a traction guide wire for use, which comprises a tubular probe and the traction guide wire which is folded and arranged in the tubular probe in a penetrating manner, and two ends of the tubular probe are respectively provided with an insertion port and a penetrating port which are communicated with an internal channel of the tubular probe. The folded closed end of the traction guide wire enters the inner cylinder channel through the insertion opening and extends out through the penetration opening; the tube diameter of the tube body of the tubular probe is uniform and unchanged. The lacrimal passage probe used in cooperation with the traction guide wire overcomes the defects that an existing lacrimal passage probe can only conduct probing in the vertical direction from top to bottom and can return and be pulled out of the lacrimal passage along the original path, the traction guide wire can only be pulled to place a supporting object upwards from the nasal cavity through the lacrimal ductule, and the supporting object cannot be placed downwards from the lacrimal point into the nasal cavity conveniently. Bidirectional pulling and bidirectional taking-out operation can be achieved, so that the operation difficulty is effectively reduced, and damage to normal parts of the lacrimal passage in the operation process is reduced.

A lacrimal cannula includes a hollow tubular body having a dispensing end, a loading end, and an injection lumen running from the loading end to the dispensing end. The dispensing end terminates in a distal tip configured to engage and seal against a punctal os in a patient's eye while being inhibited from entering a horizontal portion of the lacrimal canaliculus. The distal tip has an outer diameter selected to allow limited entry into an upper region of a vertical portion of the lacrimal canaliculus. A region of the hollow tubular body proximal of distal tip is sufficiently large to block advancement of the distal tip beyond a short distance into the vertical portion of the lacrimal canaliculus, typically no more than 2 mm.

The invention provides a lacrimal point dilator for lacrimal passage flushing, and relates to the technical field of ophthalmology medical instruments, the lacrimal point dilator comprises a rectangular retaining frame, two dilating assemblies are slidably mounted on the rectangular retaining frame, and two rows of positioning slots are formed in the top end of the rectangular retaining frame; the expansion assembly comprises two sliding sleeves, a longitudinal guide plate and a longitudinal track plate, two L-shaped sliding plates are slidably installed on the longitudinal guide plate, and the two sliding sleeves are slidably installed on the longitudinal guide plate in a spring pushing mode; a positioning inserting rod and a shifting plate are integrally formed on the sliding sleeve, adhesive patches are fixed to the pasting block in an adhesive mode, and the two corresponding adhesive patches on the same side are fixed to the upper eyelids and the lower eyelids, close to the punctum, of the eyes in an adhesive mode respectively; and a double-rotation-direction threaded rod is rotationally mounted below the expansion assembly. According to the lacrimal passage flusher, when the lacrimal passage is expanded and exposed, the two traction steel wires are in an inclined pulling state, and a flushing operation space is formed between the two traction steel wires, so that medical personnel can conveniently flush the lacrimal passage without barriers by utilizing the relatively wide flushing operation space.

The present invention relates to an endoscopic device for lacrimal duct diagnosis and treatment and a method of use, comprising a nasal auxiliary mechanism and an endoscopic mechanism. When in use, the nasal auxiliary mechanism guides the endoscopic mechanism to enter from the nasolacrimal duct, the nasal auxiliary mechanism comprises a rotatably connected straight cylinder and a steering cylinder, the steering cylinder is rotated by a handle and a control guide wire, the endoscopic mechanism comprises an auxiliary catheter and a diagnostic and treatment tool detachably connected to the auxiliary catheter, when in use, the endoscopic mechanism extends into the nasal auxiliary mechanism, the nasal auxiliary mechanism is inserted from the nostril, the rotating cylinder is rotated to align the front end of the endoscopic mechanism with the lower end opening of the nasolacrimal duct, the endoscopic mechanism is manually pushed into the nasolacrimal duct, and the lacrimal duct is diagnosed and treated by the diagnostic and treatment tool. The endoscope of the present invention is easy to operate, avoids damage to the lacrimal canaliculi and lacrimal puncta, has more treatment methods that can be used, and has better treatment effects.