Devices that can control the angle of the needle
By designing injection needle adjustment microcatheter and pushing equipment, the problem of twisting due to resistance when the catheter enters the eye is solved, and the accuracy and success rate of needle injection is improved.
CN116602815BActive Publication Date: 2025-03-25INST OF AUTOMATION CHINESE ACAD OF SCI
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Patent Information
- Application Number
- CN202310671162.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-07
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2043-06-07
AI Technical Summary
Technical Problem
When intraocular injection is performed, the catheter is prone to twist due to resistance when entering the sclera of the eye, causing the needle to be unable to maintain a suitable angle, affecting the accuracy of the drug injection.
Method used
An injection needle adjustment microcatheter is designed, including an outer catheter, an alloy wire assembly, an inner catheter and a cover plate. The tension force of the alloy wire assembly is adjusted through the push device so that the needle can be adjusted to a suitable angle to ensure the smooth entry of the catheter into the eyes.
Benefits of technology
It effectively avoids the problem of catheter twisting due to resistance, improves the accuracy of needle injection, and ensures the success of intraocular injection.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention relates to the technical field of medical equipment, and in particular to an injection needle adjustment microcatheter and a pushing device, wherein the injection needle adjustment microcatheter comprises: an outer catheter, comprising a head rotating part, a skeleton support component and a rotation support assembly, wherein one end of the head rotating part is connected to one end of the skeleton support component, one end of the rotation support assembly is connected to the head rotating part, and the other end of the rotation support assembly abuts against the skeleton support component, the skeleton support component is connected to a pushing device, and the skeleton support component is slidably connected to the pushing device; an alloy wire assembly is supported by the skeleton support component, and both ends in the length direction are respectively connected to the head rotating part and the pushing device; an inner catheter is supported by the skeleton support component, abuts against the pushing device, and is connected to a drug injection device; a cover plate is slidably connected to the skeleton support component, and the pushing device drives the cover plate to slide.
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