Thermo-sensitive chitosan special hydrogel syringe for lacrimal injection

A syringe and temperature-sensitive technology, applied in the field of special hydrogel syringes for temperature-sensitive chitosan, can solve the problems of affecting the injection accuracy, lack of stability, limited viewing angle of the syringe scale, etc. Needle insertion, the effect of reducing space

Pending Publication Date: 2019-06-25
SHANGHAI QISHENG BIOLOGICAL PREPARATION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention provides a special thermo-sensitive chitosan hydrogel syringe for lacrimal duct injection to solve the problems in the prior art that the scale viewing angle of the syringe is relatively limited, affects the accuracy of injection, and lacks stability

Method used

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  • Thermo-sensitive chitosan special hydrogel syringe for lacrimal injection
  • Thermo-sensitive chitosan special hydrogel syringe for lacrimal injection
  • Thermo-sensitive chitosan special hydrogel syringe for lacrimal injection

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] see Figure 1-4 , the present invention provides a technical solution:

[0028] A thermosensitive chitosan hydrogel syringe for lacrimal duct injection, comprising an injection needle 1, an injection needle tube 3 and a piston part 5; the diameter of the injection needle tube 3 is 1 / 2 of a standard 1ml syringe.

[0029] The diameter of the needle of injection needle 1 is reduced to 1 / 2 of the standard No. 5 needle, which can facilitate the insertion of...

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Abstract

The invention relates to the technical field of ophthalmic medical devices, in particular to a thermo-sensitive chitosan special hydrogel syringe for lacrimal injection, which comprises a syringe needle, a syringe needle tube and a piston portion; The syringe needle tube is 1 / 2 the diameter of a standard 1 ml syringe. The outer surface of the syringe needle tube is provided with a ring-shaped scale line, and the ring-shaped scale line adopts a 360-degree ring design. The piston portion is composed of a conical head and a cylindrical body, and a piston scale line is arranged at the boundary between the conical head and the cylindrical body. The diameter of the syringe needle of the syringe needle is reduced to 1 / 2 of the standard No.5 syringe needle. The syringe of the present invention hasan increased tube length at the same injection amount, which is advantageous for increasing an operable distance of an operator at the time of injection, moreover, the head section of the piston is also marked with the scale line, which is convenient for the operator to make a scale reference when injecting at different positions.

Description

technical field [0001] The invention relates to the technical field of ophthalmic medical devices, and specifically relates to a special hydrogel syringe for temperature-sensitive chitosan. Background technique [0002] Dry eye disease is a common disease in ophthalmology, and its prevalence rate is relatively high in our country. According to research data from Beijing Academy of Ophthalmology, 21% of Chinese adults suffer from dry eye symptoms. Dry eye affects work and life in mild cases, and can lead to repeated damage to the ocular surface, and even corneal ulcers in severe cases. If it is not intervened in time, it will seriously affect the patient's vision, cause great pain to the patient and reduce the quality of life. The latest dry eye work report (DEWS II) released by the International Tear Film and Ocular Surface Society in 2017 divides the treatment of dry eye caused by tear deficiency into three strategies: artificial tear replacement therapy, lacrimal duct emb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
Inventor 龚岚
Owner SHANGHAI QISHENG BIOLOGICAL PREPARATION CO LTD
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