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Retinal blood vessel injector and injection method thereof for ophthalmic surgery robot

A technique for retinal blood vessels and ophthalmic surgery, applied in ophthalmic surgery, etc., can solve problems such as limited needle tip movement, secondary injury, and patients with failed injections, and achieve the effects of simplifying the transmission structure, avoiding assembly errors, and positioning accurately

Active Publication Date: 2021-05-04
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 that the needle tip of the existing syringe device has limited movement and can only achieve linear translation and circumferential change, resulting in the need for multiple placements to find a suitable posture, which has the problem of low efficiency of surgery and placement, and The existing injection method must puncture the sclera because the needle tube enters the inside of the eyeball. If a curved needle tip is used to puncture the sclera directly, the wound will be too large, and it cannot even be directly inserted into the human eye. The risk of secondary injury

Method used

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  • Retinal blood vessel injector and injection method thereof for ophthalmic surgery robot
  • Retinal blood vessel injector and injection method thereof for ophthalmic surgery robot
  • Retinal blood vessel injector and injection method thereof for ophthalmic surgery robot

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specific Embodiment approach 1

[0029] 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

[0033] Specific implementation mode two: combination Figure 1 to Figure 3 with 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.

[0034] 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 durin...

specific Embodiment approach 3

[0035] 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 feeding connector is connected with the needle tube group module 1 at the same time, so as to achieve the purpose of pushing the entire needle tube group to complete the linear feed motion through the direct-motion inertial piezoelectric motor 2-2. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

[0036] The upper end surface of the feed connector 2-1 in ...

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Abstract

A retinal blood vessel injector and an injection method thereof for an ophthalmic surgery robot relate to a retinal blood vessel injector and an injection method thereof. The present invention aims to solve the problems of low operation and positioning efficiency in the existing syringe device, as well as the inability to directly insert into human eyes, and the problems of injection failure or secondary injury. The present invention includes an actuator fixing seat (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) is installed on the feed module (2) and The feeding is realized under the drive of the feeding module (2). The feeding module (2) is installed on the front part of the rotating module (3), and the needle tube group module (1) and the feeding module (2) The rotation is realized under the drive, and the rotation module (3) is installed on the actuator fixing seat (4). The invention is used on an ophthalmic surgery robot.

Description

technical field [0001] The invention relates to a retinal blood vessel drug injector and an injection method thereof, in particular to a retinal blood vessel drug injector used for an ophthalmic surgery robot and an injection method thereof. 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 pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F9/007
CPCA61F9/00736
Inventor 张赫易浩然赵杰
Owner HARBIN INST OF TECH
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