Lacrimal point dilator for flushing lacrimal passage

Abstract

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.

Description

Technical Field

[0001] This invention relates to the field of ophthalmic medical device technology, and more particularly to a punctal dilator for lacrimal duct irrigation. Background Technology

[0002] In lacrimal duct irrigation, if the patient has lacrimal punctum stenosis or occlusion, the irrigation needle cannot smoothly enter the lacrimal canaliculus, which will cause the irrigation fluid to backflow and fail to reach the lesion site. This not only affects the treatment effect, but may also cause complications such as lacrimal punctum mucosal damage, bleeding, and infection due to forced needle insertion. Therefore, lacrimal punctum dilation is an important pretreatment step before lacrimal duct irrigation, and lacrimal punctum dilators have become an indispensable ophthalmic medical device in this pretreatment process.

[0003] The structural design or installation location optimization of the expansion component on existing punctal dilators is not reasonable enough, which means that the expansion component needs to be moved to the eye or even directly above the punctum during use. This will block and occupy the operating space above the punctum for rinsing the lacrimal duct, hindering the normal and smooth progress of rinsing treatment and causing inconvenience to the rinsing treatment. Summary of the Invention

[0004] In view of this, the present invention provides a punctal dilator for lacrimal duct irrigation to solve the problem that the dilator needs to be moved to the eye or even directly above the lacrimal punctum during use, which would block and occupy the operating space above the lacrimal punctum for rinsing the lacrimal duct.

[0005] The technical solution proposed in this invention is as follows: a punctal dilator for lacrimal duct irrigation, specifically comprising a rectangular retaining frame, on which two dilator components are slidably mounted, and two rows of positioning slots are provided at the top of the rectangular retaining frame; each dilator component includes two sliding sleeves, a longitudinal guide plate, and a longitudinal track plate, on which two symmetrical L-shaped sliding plates are slidably mounted, and two sliding sleeves are slidably mounted on the longitudinal guide plate by spring push; each sliding sleeve has an integrally formed positioning rod and a lever, the positioning rod passing through the sliding sleeve and engaging with the positioning slot; The first end of the horizontal plate of the L-shaped sliding plate is connected to a traction wire, and the first end of the traction wire is fixed to an adhesive block. Adhesive patches are glued and fixed on the adhesive block. Two corresponding adhesive patches on the same side are glued and fixed to the upper and lower eyelids near the lacrimal punctum. A double-threaded rod is rotatably installed below the expansion component. The two reverse-oriented threads on the double-threaded rod are respectively threaded through to the vertical plates of the two L-shaped sliding plates. When the upper and lower eyelids are pulled in opposite directions to expand the lacrimal punctum, the two traction wires are in an oblique state, and at this time, there is an operating space between the two traction wires for flushing the lacrimal duct.

[0006] When in use, the two traction wires are angled when the lacrimal duct is exposed by dilation, creating a flushing space between them. Medical staff can use this relatively open space to flush the lacrimal duct without obstruction. This prevents the dilation structure, consisting of the dilation component and L-shaped slide plate, from being moved to the area directly above the eye or lacrimal punctum during use, thus avoiding obstruction of normal flushing treatment. This helps ensure the smooth and efficient implementation of lacrimal duct flushing treatment. The dilation component is slidably installed via a sliding sleeve and can slide back and forth along the length of the rectangular retaining frame to adjust the distance between the traction wires and the adhesive patch and the lacrimal punctum. This allows the adhesive patch to be attached to the eyelids (near the lacrimal punctum) of patients with different face shapes and different interocular distances. It pulls and dilates the upper and lower eyelids near the lacrimal punctum to expose the lacrimal duct for flushing. This helps improve the wearability of the dilator to different patients, making the dilator more widely applicable.

[0007] Furthermore, a rotating post is rotatably mounted through the first end of the L-shaped skateboard's transverse plate, and the tail end of the pulling steel wire is fixedly connected to the rotating post.

[0008] Furthermore, the sliding sleeve slides into the long side plate of the rectangular retaining frame, and the spring that pushes the sliding sleeve is mounted on the longitudinal track plate and is compressed and clamped between the two sliding sleeves.

[0009] Furthermore, a lug is welded to the bottom end of the sliding sleeve, and the double-threaded rod is rotatably assembled with the lug through it. Furthermore, two P-shaped side frames are symmetrically welded to the bottom of the left and right ends of the rectangular retaining frame. The lower half of the inner end of the P-shaped side frame is slidably installed with a rectangular clamping frame by a spring push. The rectangular clamping frame, the notched rectangular frame of the lower half of the P-shaped side frame, and the two U-shaped sliding frames together form a cage-shaped earmuff. This earmuff is adapted to fit the ear and accommodates it. This avoids the lack of an ear-accommodating mechanism (such as an earmuff) on the clamping and fixing component, which would cause the clamping and fixing component to directly press against the ear when fixing the expander, resulting in discomfort or even damage to the ear under long-term pressure. This helps to improve the comfort of wearing and using the expander.

[0010] Furthermore, a wearing space is formed between the two P-shaped side frames, through which the expander is inserted and worn on the head. After the expander is in place, the rectangular retaining frame is located directly above the eyes, and the two rectangular clamping frames press against the area around the ears on both sides of the head to clamp and position the expander on the head.

[0011] Furthermore, two U-shaped sliding frames are symmetrically welded onto the rectangular clamping frame, and the U-shaped sliding frames slide through and engage with the lower half of the P-shaped side frame.

[0012] Furthermore, a limiting ring is fixedly fitted on the transverse side axis of the U-shaped sliding frame, and the limiting ring abuts against the outer end of the P-shaped side frame. A spring that pushes the rectangular clamping frame is fitted on the transverse side axis of the U-shaped sliding frame and compressed between the rectangular clamping frame and the P-shaped side frame. The two rectangular clamping frames act as clamping components, using spring-driven clamping. Simply sliding the two rectangular clamping frames back-to-back compresses the spring on the U-shaped sliding frame, expanding the wearing space between them for wearing the expander, or controlling the two rectangular clamping frames to separate from the sides of the head to remove the expander. This makes the wearing and removal of the expander simple and efficient, improving its practicality.

[0013] Furthermore, two lugs are welded to the bottom of the sliding sleeve, and the two ends of the double-threaded rod are respectively rotatably assembled with the two lugs.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, when the lacrimal duct is expanded and exposed, the two traction wires are in an oblique state, and a flushing operation space is formed between them. Medical staff can use this relatively open flushing operation space to flush the lacrimal duct without obstruction and in a convenient manner. This can prevent the expansion structure composed of expansion components and L-shaped slides from being transferred to the area directly above the eye or lacrimal punctum during use, thus blocking and hindering normal flushing treatment. This helps to ensure the smooth and efficient implementation of lacrimal duct flushing treatment.

[0015] 2. In this invention, the expansion component is slidably installed via a sliding sleeve, and can slide back and forth along the length of the rectangular retaining frame to adjust the distance between the traction wire and the adhesive patch and the lacrimal punctum. This allows the adhesive patch to be attached to the eyelids (the part near the lacrimal punctum) of patients with different face shapes and different interocular distances. The upper and lower eyelids near the lacrimal punctum are pulled and expanded to expose the lacrimal duct for flushing. This helps to improve the wearability of the expander to different patients and enables the expander to be used more widely.

[0016] 3. In this invention, the rectangular clamping frame, the notched rectangular frame of the lower half of the P-shaped side frame, and the two U-shaped sliding frames together form a cage-shaped earmuff. The earmuff is adapted to the ear to accommodate the ear. This avoids the lack of an ear-accommodating mechanism (such as an earmuff) on the clamping and fixing components, which would cause the clamping and fixing components to directly press against the ear when fixing the expander, resulting in discomfort or even damage to the ear under long-term pressure. This helps to improve the comfort of wearing and using the expander.

[0017] 4. In this invention, two rectangular clamping frames serve as clamping components and are clamped by spring push. Simply sliding the two rectangular clamping frames in opposite directions can compress the spring on the U-shaped sliding frame, expanding the wearing space between them for wearing the expander. Alternatively, the two rectangular clamping frames can be controlled to separate from the sides of the head to remove the expander. This makes the wearing and removal of the expander simple and efficient, and helps to improve its practicality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram: Figure 1 A schematic diagram of the overall structure of the present invention is shown; Figure 2 A bottom-view schematic diagram of the entire invention is shown; Figure 3 A schematic diagram showing the disassembled state of the rectangular clamping frame in this invention is shown; Figure 4 A schematic diagram of the expansion component in this invention is shown; Figure 5 A bottom-view schematic diagram of the expansion component in this invention is shown; Figure 6 A schematic diagram showing the disassembled state of the expansion component in this invention is provided. Figure 7 A schematic diagram of the rectangular clamping frame in this invention is shown; Figure 8 The present invention is shown Figure 1 Enlarged structural diagram of section A.

[0021] List of reference numerals in the attached diagram: 1. Rectangular retaining frame; 101. Positioning slot; 2. P-shaped side frame; 201. Rectangular clamping frame; 202. U-shaped sliding frame; 2021. Limiting ring; 3. Expansion assembly; 301. Sliding sleeve; 3011. Ear block; 302. Longitudinal guide plate; 303. Longitudinal track plate; 304. Sliding sleeve; 3041. Positioning rod; 3042. Dial plate; 305. Double-threaded rod; 4. L-shaped sliding plate; 401. Rotating column; 402. Pulling wire; 4021. Posting block; 403. Adhesive patch. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the described embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] Please refer to Figures 1 to 8 Example 1: This embodiment proposes a punctal dilator for lacrimal duct irrigation, comprising a rectangular retaining frame 1, on which two opposing dilator components 3 are slidably mounted. The top of the rectangular retaining frame 1 has two rows of symmetrically distributed positioning slots 101. Each dilator component 3 includes two symmetrically distributed sliding sleeves 301, and a longitudinally positioned guide plate 302 and a longitudinally positioned track plate 303 welded between the two sliding sleeves 301. Two L-shaped sliding plates 4 are symmetrically slidably mounted on the longitudinally positioned guide plate 302, and springs push the longitudinally positioned guide plate 302. Two sliding sleeves 304 are symmetrically slidably installed; the first and last ends of the sliding sleeve 304 are integrally formed with positioning rods 3041 and levers 3042, respectively. The positioning rods 3041 pass through the sliding sleeves 301 and are inserted into the positioning slots 101; the first end of the horizontal plate of the L-shaped slide plate 4 is connected to a pulling steel wire 402, and the first end of the pulling steel wire 402 is fixedly connected to an adhesive block 4021. Adhesive patches 403 are glued and fixed on the adhesive block 4021, and two corresponding adhesive patches 403 on the same side are glued and fixed to the upper and lower eyelids near the tear duct.

[0024] A double-threaded rod 305 is rotatably installed below the expansion component 3. The two reverse-oriented threads on the double-threaded rod 305 are respectively threaded through to the vertical plates of the two L-shaped sliding plates 4. When the upper and lower eyelids are pulled in opposite directions to expand the lacrimal punctum, the two traction wires 402 are in an oblique state, and at this time, there is an operating space between the two traction wires 402 for rinsing the lacrimal duct.

[0025] Preferably, a rotating post 401 is rotatably mounted through the first end of the horizontal plate of the L-shaped slide plate 4, and the tail end of the pulling steel wire 402 is fixedly connected to the rotating post 401.

[0026] Preferably, the sliding sleeve 301 is slidably engaged with the long side plate of the rectangular retaining frame 1, and the spring that pushes the sliding sleeve 301 is mounted on the longitudinal track plate 303 and compressed and clamped between the two sliding sleeves 301.

[0027] Preferably, the bottom end of the sliding sleeve 301 is welded with two lugs 3011, and the two ends of the double-threaded rod 305 are respectively rotatably assembled with the two lugs 3011.

[0028] Implementation 2: This embodiment is based on Implementation 1, but with the following additions: Two P-shaped side frames 2 are symmetrically welded to the bottom of the left and right ends of the rectangular retaining frame 1. A rectangular clamping frame 201 is slidably installed on the lower half of the inner end of the P-shaped side frame 2 by means of spring push. The two rectangular clamping frames 201 are symmetrically arranged on the left and right. A wearing space is formed between the two P-shaped side frames 2. The expander is worn on the head through this wearing space. After the expander is worn in place, the rectangular retaining frame 1 is located directly above the eyes, and the two rectangular clamping frames 201 press against the position around the ears on both sides of the head to clamp and position the expander on the head. Two U-shaped sliding frames 202 are symmetrically welded on the rectangular clamping frames 201. The U-shaped sliding frames 202 slide through and engage with the lower half of the P-shaped side frame 2.

[0029] Preferably, a limiting ring 2021 is fixedly mounted on the horizontal side shaft of the U-shaped slide frame 202, and the limiting ring 2021 abuts against the outer end of the P-shaped side frame 2.

[0030] Preferably, the spring that pushes the rectangular clamping frame 201 is mounted on the horizontal side axis of the U-shaped slide frame 202 and is compressed and clamped between the rectangular clamping frame 201 and the P-shaped side frame 2.

[0031] The working principle, specific details, implementation steps, functions and interrelationships of the features in the above embodiments, and the roles these features play in realizing this technical solution will be described and explained in detail below: The two adhesive patches 403, L-shaped sliding plates 4, and traction wires 402 are all arranged in pairs. In use, the expander is worn on the head and clamped in place by two rectangular clamping frames 201, with the bottom of the rectangular clamping frames 1 facing the front of the eye. Then, the two adhesive patches 403 are glued to the upper and lower eyelids near the tear duct, respectively. Next, the double-threaded rod 305 is rotated clockwise. When the double-threaded rod 305 rotates clockwise, it pushes the two L-shaped sliding plates 4 to slide backwards, pulling the two traction wires 402 in the opposite direction. When the traction is tightened, the upper and lower eyelids are pulled by two adhesive patches 403 arranged in a group to expand the lacrimal punctum and expose the lacrimal duct for irrigation treatment. When the lacrimal duct is expanded and exposed, the two traction wires 402 are in an oblique state, and an irrigation operation space is formed between them. Medical staff can use this relatively open irrigation operation space to perform unobstructed and convenient irrigation of the lacrimal duct. This can prevent the expansion structure composed of expansion component 3 and L-shaped slide plate 4 from being transferred to the eye or lacrimal punctum during use, which would obstruct and hinder normal irrigation treatment. This helps to ensure the smooth and efficient implementation of lacrimal duct irrigation treatment.

[0032] The expansion component 3 is slidably installed via the sliding sleeve 301 and can slide back and forth along the left and right length direction of the rectangular retaining frame 1 to adjust the distance between the traction wire 402 and the adhesive patch 403 and the lacrimal punctum. This allows the adhesive patch 403 to be attached to the eyelids (the part near the lacrimal punctum) of patients with different face shapes and different interocular distances. It pulls and expands the upper and lower eyelids near the lacrimal punctum to expose the lacrimal duct for irrigation. This helps to improve the wearability of the expander to different patients and enables the expander to be used more widely.

[0033] When the positioning rod 3041 is inserted into the positioning slot 101, the expansion component 3 can be positioned in the sliding adjustment position. The positioning rod 3041 is indirectly pushed by the spring on the longitudinal track plate 303 to maintain the insertion and positioning state. The sliding sleeve 304 is slid away from the sliding sleeve 301 by the lever 3042, which can drive the positioning rod 3041 to be pulled out from the positioning slot 101, unlock and release the expansion component 3, and slide the expansion component 3 for adjustment.

[0034] The two U-shaped sliding frames 202, along with the springs and rectangular clamping frames 201 on them, form a clamping and fixing assembly. The rectangular clamping frame 201, the notched rectangular frame of the lower half of the P-shaped side frame 2, and the two U-shaped sliding frames 202 together form a cage-shaped earmuff. This earmuff is adapted to fit the ear and is used to accommodate the ear. This avoids the clamping and fixing assembly lacking a mechanism to accommodate the ear (such as an earmuff), which would cause the clamping and fixing assembly to directly press against the ear when fixing the expander, resulting in discomfort or even damage to the ear under long-term pressure. This helps to improve the comfort of wearing and using the expander.

[0035] Two rectangular clamping frames 201 serve as clamping components, using spring-driven clamping. Simply sliding the two rectangular clamping frames 201 in opposite directions compresses the spring on the U-shaped sliding frame 202, expanding the wearing space between them for wearing the expander. Alternatively, the two rectangular clamping frames 201 can be controlled to separate from the sides of the head to remove the expander. This makes the wearing and removal of the expander simple and efficient, enhancing its practicality.

[0036] Working principle: In use, the expander is worn on the head and clamped in place by two rectangular clamping frames 201, with the bottom of the rectangular clamping frame 1 facing the front of the eye. Then, two sets of adhesive patches 403 are attached to the upper and lower eyelids near the lacrimal punctum. Next, the double-rotating threaded rod 305 is rotated forward. When the double-rotating threaded rod 305 rotates forward, it pushes and drives two sets of L-shaped sliding plates 4 to slide backward, pulling the two sets of traction wires 402 in the opposite direction. When the two traction wires 402 are pulled and tightened in the opposite direction, they begin to pull the upper and lower eyelids through the two sets of adhesive patches 403 to expand the lacrimal punctum and expose the lacrimal duct, facilitating the irrigation treatment of the lacrimal duct. When the lacrimal duct is expanded and exposed, the two traction wires 402 are in an oblique state, and an irrigation operation space is formed between them. Medical staff can use this relatively open irrigation operation space to perform unobstructed and convenient irrigation of the lacrimal duct.

Claims

1. A punctal dilator for lacrimal duct irrigation, comprising a rectangular retaining frame (1), on which two dilators (3) are slidably mounted, and two rows of positioning slots (101) are provided at the top of the rectangular retaining frame (1); characterized in that, The expansion assembly (3) includes two sliding sleeves (301), a longitudinal guide plate (302), and a longitudinal track plate (303). Two symmetrical L-shaped sliding plates (4) are slidably mounted on the longitudinal guide plate (302), and two sliding sleeves (304) are slidably mounted on the longitudinal guide plate (302) in the form of spring push. A positioning rod (3041) and a lever plate (3042) are integrally formed on the sliding sleeve (304). The positioning rod (3041) passes through the sliding sleeve (301) and is inserted into the positioning slot (101). The first end of the horizontal plate of the L-shaped slide (4) is connected to a traction wire (402), and the first end of the traction wire (402) is fixed to an adhesive block (4021). An adhesive patch (403) is glued and fixed on the adhesive block (4021). Two adhesive patches (403) on the same side are glued and fixed to the upper and lower eyelids near the tear duct. A double-threaded rod (305) is rotatably installed below the expansion component (3). Two reverse threads on the double-threaded rod (305) are threaded through the vertical plates of the two L-shaped slides (4). When the upper and lower eyelids are pulled in opposite directions to expand the tear duct, the two traction wires (402) are in a diagonal state, and at this time, there is an operating space between the two traction wires (402) for rinsing the tear duct.

2. A punctal dilator for lacrimal duct irrigation according to claim 1, characterized in that, The first end of the horizontal plate of the L-shaped slide (4) is rotatably mounted with a rotating column (401), and the tail end of the pulling steel wire (402) is fixedly connected to the rotating column (401).

3. A punctal dilator for lacrimal duct irrigation according to claim 1, characterized in that, The sliding sleeve (301) slides in cooperation with the long side plate of the rectangular retaining frame (1). The spring that pushes the sliding sleeve (301) is mounted on the longitudinal track plate (303) and is compressed and clamped between the two sliding sleeves (301).

4. A punctal dilator for lacrimal duct irrigation according to claim 1, characterized in that, The rectangular retaining frame (1) has two P-shaped side frames (2) symmetrically welded to the bottom of its left and right ends. The lower half of the inner end of the P-shaped side frame (2) is slidably installed with a rectangular clamping frame (201) in the form of spring push.

5. A punctal dilator for lacrimal duct irrigation according to claim 4, characterized in that, A wearing space is formed between the two P-shaped side frames (2). The entire expander is inserted into the head through the wearing space. After the expander is put in place, the rectangular retaining frame (1) is located directly above the eyes, and the two rectangular clamping frames (201) press against the position around the ears on both sides of the head to clamp and position the entire expander on the head.

6. A punctal dilator for lacrimal duct irrigation according to claim 4, characterized in that, Two U-shaped sliding frames (202) are symmetrically welded on the rectangular clamp (201), and the U-shaped sliding frames (202) slide through and engage with the lower half of the P-shaped side frame (2).

7. A punctal dilator for lacrimal duct irrigation according to claim 6, characterized in that, A limiting ring (2021) is fixedly mounted on the horizontal side shaft of the U-shaped sliding frame (202), and the limiting ring (2021) abuts against the outer end of the P-shaped side frame (2).

8. A punctal dilator for lacrimal duct irrigation according to claim 4, characterized in that, The spring that pushes the rectangular clamp (201) is mounted on the horizontal side axis of the U-shaped slide frame (202) and is compressed and clamped between the rectangular clamp (201) and the P-shaped side frame (2).

9. A punctal dilator for lacrimal duct irrigation according to claim 1, characterized in that, The bottom end of the sliding sleeve (301) is welded with two lugs (3011), and the two ends of the double-helix threaded rod (305) are respectively connected to the two lugs (3011) for rotational assembly.

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