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Memory guide wire combined type lacrimal probe

A lacrimal duct probe and combined technology, applied in medical science, surgery, ophthalmic surgery, etc., can solve the problems of insufficient extension, easy breakage, insufficient needle core toughness, etc., and achieve easy operation, not easy to break, and improve memory. Effect

Inactive Publication Date: 2010-03-17
项小珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent of the present invention has made significant improvements to the heat treatment process of the memory material and the guide wire. Insufficient toughness is easy to break, causing inconvenience, and even suspending surgery and other problems

Method used

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  • Memory guide wire combined type lacrimal probe
  • Memory guide wire combined type lacrimal probe
  • Memory guide wire combined type lacrimal probe

Examples

Experimental program
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Effect test

Embodiment Construction

[0015] The following combined with the best implementation steps shown in the accompanying drawings:

[0016] A combined lacrimal duct probe plus memory guide wire, such as Figures 1 to 5 As shown, it includes a probe 1 and a memory guide wire 2 that is inversely placed in the probe tube and can be pulled freely therein. The needle tip 105 of the probe tube 1 is closed in a conical shape, and there is a solid section of a certain length in it. 101, the upper end surface 102 of the solid section is inclined downward, and a side wall hole 103 is opened on the pipe wall connected to the upper end surface, and the side wall hole is close to the lower edge of the inclined surface, and the above-mentioned inclination and the side wall hole The rear wall of the solid section 101 is at an obtuse angle, and the length of the solid section 101 is 3-7 mm.

[0017] In order not to damage the nasal mucous membrane, and to guide the Y-shaped lacrimal duct expansion drainage tube pulling w...

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Abstract

The invention discloses a memory guide wire combined type lacrimal probe. The lacrimal probe comprises a memory guide wire which can be inserted and pulled up and down in a tube of a probe body. The memory guide wire is formed by an alloy consisting of 50% of titanium and 50% of nickel, and is subjected to a heat treatment technology of a self-research test so as to enhance memorability, elasticity and tenacity thereof. The memory guide wire is in a flat shape. The mixture ratio of the titanium and the nickel is more scientific and the memory guide wire is subjected to the heat treatment of the self-research test, thus greatly improving the memorability, the elasticity and the tenacity thereof, and being easy to operate and not easy to fracture; moreover, the J shape and front spoon-shapedbending using function of the guild wire as well as the arranging angle of a side wall hole of the lacrimal probe are improved, thus being easier for the memory guide wire to extend to the position of nasal vestibule.

Description

Technical field: [0001] The patent of the invention relates to the field of ophthalmology in clinical medicine, and relates to a surgical instrument for probing the lacrimal duct and minimally invasive retrograde catheterization technical background: [0002] Retrograde catheterization in the treatment of lacrimal duct obstruction disease was originally referred to as "nasal dacryocystectomy" and "canalicular anastomosis". In recent years, it has become a hotspot in the treatment of lacrimal duct obstruction. The same principle, different tools and methods of lacrimal duct catheterization can be seen in clinical reports for the treatment of lacrimal duct obstruction. But the lacrimal duct retrograde catheterization device in the prior art has the following deficiencies: the ophthalmologist who requires the catheterization operation has the operating technique of an otolaryngologist; Take out the guide wire or guide tube from the lower mouth. To complete this operation, eve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007A61L31/02
Inventor 项小珍
Owner 项小珍
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