Retinal blood vessel syringe for ophthalmologic operation robot

A retinal vascular and ophthalmic surgery technology, applied in ophthalmic surgery and other directions, can solve the problems of low operation and positioning efficiency, limited needle tip movement, etc., to achieve the effect of improving efficiency, avoiding assembly errors and accurate positioning

Inactive Publication Date: 2019-10-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of limited movement of the needle tip of the existing syringe device, which can only achieve linear translation and circumferential change, resulting in the need for multiple positioning to find a suitable posture, and the problem of low operation and positioning efficiency

Method used

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  • Retinal blood vessel syringe for ophthalmologic operation robot
  • Retinal blood vessel syringe for ophthalmologic operation robot
  • Retinal blood vessel syringe for ophthalmologic operation robot

Examples

Experimental program
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specific Embodiment approach 1

[0017] Specific implementation mode one: combine Figure 1 to Figure 5 Describe this embodiment, a retinal blood vessel drug injector for an ophthalmic surgery robot in this embodiment includes an actuator fixing base 4, which also includes a needle tube group module 1, a feed module 2 and a rotation module 3, and the needle tube group module 1 Installed on the feed module 2 and driven by the feed module 2, the feed module 2 is installed on the front of the rotation module 3, and the needle tube group module 1 and the feed module 2 are driven by the rotation module 3. Rotation, the rotation module 3 is installed on the actuator fixing seat 4; the needle tube set module 1 includes a needle tip 1-1, an inner tube 1-2, an outer tube 1-3, an outer tube connector 1-4, an inner tube connector 1- 5. Bragg fiber grating 1-6, lead screw 1-7, lead screw nut 1-8, stepper motor 1-9, injection hose 1-10 and installation frame 1-11, the installation frame 1-11 is installed in the For the f...

specific Embodiment approach 2

[0021] Specific implementation mode two: combination Figure 1 to Figure 3 and Figure 5 The present embodiment will be described. The tip 1-1 of this embodiment has an upward bend of 45° at its end, and the diameter of the needle tip 1-1 is 0.4 mm. Such setting facilitates accurate oblique insertion into blood vessels during operation. Other compositions and connections are the same as in the first embodiment.

[0022] When the needle of this embodiment is inserted into the blood vessel, it generally needs to be inserted at a certain angle. If it is inserted vertically into the blood vessel, it is very easy to puncture the whole blood vessel. Experiments have proved that the best inclination angle is generally 25-35 degrees. For this purpose, the needle tip designed in this project has a 45-degree angle bend, which is matched with the angle difference between the inner and outer tubes and the blood vessel, so that the angle between the needle tip and the blood vessel during...

specific Embodiment approach 3

[0023] Specific implementation mode three: combination Figure 1 to Figure 3 Describe this embodiment, the feed module 2 of this embodiment includes a feed connector 2-1 and a direct-motion inertia piezoelectric motor 2-2, the feed connector 2-1 is connected to the mounting frame 1-11, and the direct-motion inertia The piezoelectric motor 2-2 is installed on the feeding connector 2-1 and drives the needle tube group module 1 to complete the linear feeding action. In this way, the direct-motion inertial piezoelectric motor 2-2 is connected to the feed connector 2-1 through bolts. The feed connector is connected with the needle tube set module 1 at the same time, so as to achieve the purpose of pushing the entire needle tube set to complete the linear feed motion through the inertial piezoelectric motor 2-2. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

[0024] The upper end surface of the feed connector 2-1 in this embodiment is pr...

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Abstract

The invention relates to a retinal blood vessel syringe, and particularly provides a retinal blood vessel syringe for an ophthalmologic operation robot. In order to solve the problems that the movement of the needle tip of an existing syringe device is limited, only linear translation and circumferential change can be achieved, consequently, a proper posture can be found by multi-time positioning,and the operation efficiency and the positioning efficiency are low, the retinal blood vessel syringe comprises an actuator fixing base (4), and further comprises a needle tube group module (1), a feeding module (2) and a rotating module (3), wherein the needle tube group module (1) is installed on the feeding module (2) and driven by the feeding module (2) to achieve feeding, the feeding module(2) is installed on the front portion of the rotating module (3), the needle tube group module (1) and the feeding module (2) are driven by the rotating module (3) to achieve rotation, and the rotating module (3) is installed on the actuator fixing base (4). The retinal blood vessel syringe is used on the ophthalmologic operation robot.

Description

technical field [0001] The invention relates to a blood vessel drug injector, in particular to a retinal blood vessel drug injector used for an ophthalmic surgery robot. Background technique [0002] When the blood vessels on the fundus retina are blocked or pathological, the simplest and most effective method is to inject drugs at the diseased blood vessels to achieve the effect of prescribing the right medicine and clearing the blockage. Due to the small size of the eyeball and the fine and fragile tissue structure of the eyeball, the diameter of the retinal vein to be injected is generally less than 400 μm, and the amplitude of the physiological hand tremor of a retinal surgeon is about 180 μm. This work cannot be done, and the small force during the operation is difficult for people to perceive, so the doctor alone cannot know whether the blood vessel is successfully punctured, and the patient is prone to postoperative complications due to the small trauma during the ope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
CPCA61F9/00736
Inventor 张赫李治廷赵杰
Owner HARBIN INST OF TECH
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