Patent ID: 11872160
Assignee: WENZHOU MEDICAL UNIVERSITY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 1:
2. The method for continuously balancing the trans-lamina cribrosa pressure difference by utilizing a trans-lamina cribrosa pressure balance maintainer of claim 1, further comprising the following steps of:
inserting a trocar into the eye at an 8 o'clock position, and 3.5 mm away from a corneal limbal of the eye;
removing a handle of the trocar and placing a sealing cap on the trocar to ensure the sealing integrity of the eye;
inserting trocars at a 2 o'clock and a 10 o'clock position, respectively;
placing sealing caps on the trocars at the trocars at the 2 o'clock and a 10 o'clock positions;
removing the trocar at the 8 o'clock position, and
performing intraocular infusing to maintain a balance of intraocular pressure;
removing the sealing caps of the trocars at the 2 o'clock and 10 o'clock positions;
inserting a vitrectomy instrument and an optical fiber for performing a vitrectomy;
extracting the vitrectomy instrument after vitrectomy;
causing the trans-lamina cribrosa pressure balance maintainer to enter the vitreous cavity of the excised vitreous body from the 2 o'clock position and to be located in the optic papilla;
puncturing the lamina cribrosa while avoiding blood vessels;
after placement of the trans-lamina cribrosa pressure balance maintainer, withdrawing the puncture instrument; and
using normal saline to fill the eye to ensure normal intraocular pressure.