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CN-121971285-A - Punctum dilator for lacrimal passage irrigation

CN121971285ACN 121971285 ACN121971285 ACN 121971285ACN-121971285-A

Abstract

The invention provides a punctum expander for lacrimal passage irrigation, which relates to the technical field of ophthalmic medical instruments and comprises a rectangular holding frame, wherein two expansion assemblies are slidably arranged on the rectangular holding frame, two row positioning slots are formed in the top end of the rectangular holding frame, each expansion assembly comprises two sliding sleeves, a longitudinal guide plate and a longitudinal track plate, two L-shaped sliding plates are slidably arranged on the longitudinal guide plate, two sliding sleeves are slidably arranged in a spring pushing mode on the longitudinal guide plate, a positioning inserting rod and a poking plate are integrally formed on the sliding sleeve, adhesive patches are fixedly adhered on a pasting block, two adhesive patches corresponding to the same side are respectively adhered and fixed with upper and lower eyelid close to a lacrimal passage, and a double-rotation threaded rod is rotatably arranged below each expansion assembly. According to the invention, when the lacrimal passage is expanded and exposed, the two traction steel wires are in a diagonal state, and a flushing operation space is formed between the two traction steel wires, so that medical staff can use the relatively wide flushing operation space to perform barrier-free and convenient flushing on the lacrimal passage.

Inventors

  • HUANG CAICUI
  • ZHANG LAN
  • ZHOU JINMEI

Assignees

  • 中国人民解放军陆军特色医学中心

Dates

Publication Date
20260505
Application Date
20260318

Claims (9)

  1. 1. A punctum expander for lacrimal passage irrigation comprises a rectangular holding frame (1), wherein two expansion components (3) are slidably arranged on the rectangular holding frame (1), two positioning slots (101) are formed in the top end of the rectangular holding frame (1), The expansion assembly (3) comprises two sliding sleeves (301), a longitudinal guide plate (302) and a longitudinal track plate (303), wherein two symmetrical L-shaped sliding plates (4) are slidably arranged on the longitudinal guide plate (302), two sliding sleeves (304) are slidably arranged on the longitudinal guide plate (302) in a spring pushing mode, a positioning inserting rod (3041) and a poking plate (3042) are integrally formed on the sliding sleeves (304), and the positioning inserting rod (3041) penetrates through the sliding sleeve (301) and is in plug-in fit with the positioning slot (101); The eye-shaped lacrimal passage flushing device is characterized in that the head end of the transverse plate body of the L-shaped sliding plate (4) is connected with a traction steel wire (402), the head end of the traction steel wire (402) is fixedly connected with a posting block (4021), an adhesive patch (403) is fixedly adhered to the posting block (4021), two adhesive patches (403) corresponding to the same side are respectively fixedly adhered to upper and lower eyelid close to a lacrimal passage, a double-rotation threaded rod (305) is rotatably arranged below the expansion assembly (3), two sections of threads reversely arranged on the double-rotation threaded rod (305) are respectively in threaded fit with the vertical plate bodies of the two L-shaped sliding plates (4), and when the upper eyelid and the lower eyelid are reversely pulled to expand the lacrimal passage, the two traction steel wires (402) are in a diagonal state, and an operation space for flushing the lacrimal passage is reserved between the two traction steel wires (402).
  2. 2. The punctal dilator for lacrimal passage irrigation according to claim 1, wherein the front end portion of the transverse plate body of the L-shaped sliding plate (4) is rotatably provided with a rotary column (401) through the transverse plate body, and the tail end of the pulling steel wire (402) is fixedly connected with the rotary column (401).
  3. 3. The punctal dilator for lacrimal passage irrigation according to claim 1, wherein the sliding sleeve (301) is slidingly engaged with the long side plate of the rectangular holding frame (1), and the spring pushing the sliding sleeve (301) is sleeved on the longitudinal track plate (303) and is compressed and clamped between the two sliding sleeves (301).
  4. 4. The punctal dilator for lacrimal passage irrigation according to claim 1, wherein two P-shaped side frames (2) are symmetrically welded at bottoms of left and right ends of the rectangular holding frame (1), and a rectangular clamping frame (201) is slidably installed on a lower half part of an inner side end of the P-shaped side frame (2) in a spring pushing mode.
  5. 5. The punctal dilator for lacrimal passage irrigation according to claim 4, wherein a wearing space is formed between the two P-shaped side frames (2), the dilator is integrally worn on the head through the wearing space, the rectangular holding frame (1) is positioned right above the eyes after the dilator is worn in place, and the two rectangular clamping frames (201) are pressed and fit at positions around ears at two sides of the head for clamping and positioning the dilator integrally on the head.
  6. 6. The punctal dilator for lacrimal passage irrigation according to claim 4, wherein two U-shaped sliding frames (202) are symmetrically welded on the rectangular clamping frame (201), and the U-shaped sliding frames (202) are in sliding fit with the lower half parts of the P-shaped side frames (2) in a penetrating manner.
  7. 7. The punctal dilator for lacrimal passage irrigation according to claim 6, wherein the lateral side shaft of the U-shaped sliding frame (202) is fixedly sleeved with a limiting ring (2021), and the limiting ring (2021) is in abutting contact with the outer side end of the P-shaped side frame (2).
  8. 8. The punctal dilator for lacrimal passage irrigation according to claim 4, wherein the spring pushing the rectangular clamping frame (201) is sleeved on the lateral side shaft of the U-shaped sliding frame (202) and is compressed and clamped between the rectangular clamping frame (201) and the P-shaped side frame (2).
  9. 9. The punctal dilator for lacrimal passage irrigation according to claim 1, wherein two ear blocks (3011) are welded at the bottom end of the sliding sleeve (301), and two ends of the double-rotation-direction threaded rod (305) are respectively assembled with the two ear blocks (3011) in a penetrating and rotating manner.

Description

Punctum dilator for lacrimal passage irrigation Technical Field The invention relates to the technical field of ophthalmic medical appliances, in particular to a punctum dilator for lacrimal passage irrigation. Background In the lacrimal passage irrigation treatment, if a patient has the condition of narrow or blocked punctum, an irrigation needle cannot smoothly enter a lacrimal canaliculus, so that an irrigation fluid can flow back and cannot reach a lesion part, the diagnosis and treatment effect is not only affected, but also complications such as damage, bleeding, infection and the like of a mucous membrane of the punctum can be caused by a strong advancing needle, so that punctum expansion is an important pretreatment step before lacrimal passage irrigation, and a punctum expander becomes an indispensable ophthalmic medical instrument in the pretreatment process. The structural design or the installation position optimization design of the expansion assembly on the existing punctum expander is unreasonable, so that the expansion assembly needs to be transferred to eyes or even right above the punctum when in use, which can prevent the operation space above the punctum from being occupied for flushing the lacrimal passage, prevent the normal and smooth progress of flushing treatment, and bring inconvenience to flushing treatment. Disclosure of Invention In view of the above, the present invention provides a punctal dilator for lacrimal passage irrigation, so as to solve the problem that the dilating component needs to be transferred to the eyes and even directly above the punctum when in use, and can block the operation space occupied above the punctum for lacrimal passage irrigation. The technical scheme includes that the punctal dilator for lacrimal passage irrigation comprises a rectangular retaining frame, wherein two dilating assemblies are slidably arranged on the rectangular retaining frame, two positioning slots are formed in the top end of the rectangular retaining frame, each dilating assembly comprises two sliding sleeves, a longitudinal guide plate and a longitudinal track plate, two symmetrical L-shaped sliding plates are slidably arranged on the longitudinal guide plate, two sliding sleeves are slidably arranged on the longitudinal guide plate in a spring pushing mode, and a positioning inserting rod and a poking plate are integrally formed on the sliding sleeve, penetrate through the sliding sleeves and are in plug-in fit with the positioning slots; the device comprises an L-shaped sliding plate, a traction steel wire, a pasting block, two adhesive patches, a double-rotation threaded rod, a left-handed operation space and a right-handed operation space, wherein the traction steel wire is connected with the head end of the L-shaped sliding plate, the traction steel wire is fixedly connected with the head end of the traction steel wire, the pasting block is fixedly adhered to the pasting block, the two adhesive patches corresponding to the same side are respectively adhered to the upper eyelid and the lower eyelid of the eye, which are close to the punctum, the double-rotation threaded rod is rotatably arranged below the expansion assembly, two sections of threads reversely arranged on the double-rotation threaded rod are respectively matched with the vertical plate through threads of the two L-shaped sliding plates, and when the upper eyelid and the lower eyelid are reversely pulled to expand the punctum, the two traction steel wires are in a diagonal state, and an operation space for flushing a lacrimal passage is reserved between the two traction steel wires. When the lacrimal passage is expanded and exposed, two traction steel wires are in an inclined pulling state, a flushing operation space is formed between the traction steel wires and the lacrimal passage, medical staff can use the relatively open flushing operation space to perform barrier-free convenient flushing on the lacrimal passage, an expansion structure comprising an expansion assembly, an L-shaped sliding plate and the like can be prevented from being transferred to the position right above eyes or punctum in the using process, normal flushing treatment operation is prevented from being hindered, smooth and efficient implementation of lacrimal passage flushing treatment is facilitated, the expansion assembly can slide back and forth along the length direction of a rectangular retaining frame through sliding sleeve in a sliding mode, the distance between the traction steel wires and a glue paste sheet and the lacrimal punctum is adjusted, the glue paste sheet can be adhered to eyelid (a part close to the lacrimal punctum) of different face types of patients, the traction expansion is performed on upper eyelid and lower eyelid close to the lacrimal passage to enable the lacrimal passage to be exposed and washed, the suitability of the expander and different patients is facilitated, and the expander can be widely applied. Fu