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Retrobulbar drug injection device

A technology of injecting medicine and behind the ball, applied in ophthalmic surgery, ophthalmic treatment, etc., can solve problems such as intraocular infection of intraocular drugs, improper operation of injection needles, and toxic reactions

Active Publication Date: 2016-10-26
颜繁诚 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

9) Improper operation or the injection needle is too sharp to pierce the eyeball, resulting in a drop in intraocular pressure, intraocular infection, or intraocular drug toxicity, etc.

Method used

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  • Retrobulbar drug injection device

Examples

Experimental program
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Effect test

Embodiment approach

[0114] 1. A retrobulbar drug injection device, comprising: a syringe and an outer sheath that accommodates the syringe, wherein the syringe includes a syringe barrel, a piston push rod, a piston, a first protrusion, a first needle, and a syringe barrel. a first support plate disposed about the syringe barrel at the proximal end of the; and

[0115] The sheath includes a sheath barrel, a second protrusion, a second needle, and a second support plate disposed about the sheath barrel at a proximal end of the sheath barrel;

[0116] wherein a groove is provided on the second support plate, the groove being sized to receive the first support plate;

[0117] Internal thread or external thread is provided on the distal inner wall of the outer sheath cylinder, and the distal outer wall of the syringe cylinder is provided with the internal thread or external thread on the outer sheath cylinder. corresponding external or internal threads threadedly engaged, and the first support plate ...

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Abstract

The invention discloses a retrobulbar drug injection device. The device comprises a syringe and a sheath, the syringe comprises a syringe cylinder, a piston push rod, a piston, a first protrusion portion, a first needle, and a first support plate, the sheath includes a sheath cylinder, a second protrusion portion, a second needle, and a second support plate, an inner wall at a far side of the sheath cylinder is provided with internal threads, and an outer wall at a far side of the syringe cylinder is provided with external threads; the end at a far side of the first needle is blunt, and the end at a far side of the second needle is pointed; the portion at the far end of the first needle is provided with one or more drug injection openings; and the bottom surface of the sheath cylinder is provided with one or more air holes. By using the retrobulbar drug injection device, the second needle and the first needle respectively perform the puncture function and the stripping function, and the drug injection openings of the first needle can be employed for drug injection so that the depth of the drug injection position, the drug injection amount, and the drug injection speed can be actively controlled.

Description

technical field [0001] The invention relates to an eye drug injection device, in particular to a retrobulbar eye drug injection device. Background technique [0002] Retrobulbar injection is to inject drugs into the muscle cone behind the eyeball to achieve therapeutic and anesthesia effects. This operation is mainly used for ciliary ganglion block anesthesia in intraocular surgery, inflammation of the back of the eye, such as retrobulbar optic neuritis, choroiditis, retinitis and central retinal artery occlusion, and it can also be used as a local treatment for severe pain in glaucoma Route of administration. [0003] However, retrobulbar injections with conventional needles (eg, 1.25-inch, 25- or 27-G needles or short-beveled, blunt retrobulbar needles) require more skill. Even with proficient operating skills, the inherent disadvantages of conventional needles and the complex anatomical structure of the retrobulbar injection still have a non-negligible complication rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/00A61F9/007
CPCA61F9/0008A61F9/00736
Inventor 颜繁诚李树宁王宁利纪晓峰
Owner 颜繁诚
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