Multifunctional Cataract Surgery Assistive Instruments Used in Cataract Surgery

NCT ID: NCT06182605

Last Updated: 2025-05-15

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 1000 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-01-01
• Study Completion Date: 2026-12-30

Brief Summary

In order to better cope with complex situations of cataract surgery, we designed and improved a new set of multi-functional cataract surgery auxiliary devices, including ophthalmic surgery auxiliary hooks, eye retractor hooks and membranous cataract scissors. Their common feature is that they have the function of 2-3 traditional surgical instruments, which can be switched in operations, reducing the replacement of different surgical instruments, lowing the number of surgical instruments in and out of the incision, reducing trauma and improving surgical efficiency. The purpose of this multi-center prospective clinical study is to verify the advantages of this new group of multifunctional devices and further summarize the experience and improvement by comparing the safety and effectiveness of traditional cataract surgical instruments combined with new multifunctional cataract assisted surgical instruments and traditional cataract surgical instruments alone.

Detailed Description

Cataract is the number one cause of blindness, and the main treatment method is surgery to remove the cloudy lens and install an intraocular lens. The operation relies on ophthalmic micromanipulative instruments, but in complex cases such as abnormal lens capsule, ocular trauma, etc., the difficulty of surgery increases, so that conventional instruments are often unable to complete the operation well. In order to better cope with these complex situations, we designed and improved a new set of multi-functional cataract surgery auxiliary devices, including ophthalmic surgery auxiliary hooks, eye retractor hooks and membranous cataract scissors, which have obtained utility model patents and first-class medical device filings. Their common feature is that they have the function of 2-3 traditional surgical instruments, which can be switched intraoperatively, reduce the replacement of different surgical instruments, reduce the number of surgical instruments in and out of the incision, reduce trauma and improve surgical efficiency. The purpose of this multi-center prospective clinical study is to verify the advantages of this new group of multifunctional devices and further summarize the experience and improvement by comparing the safety and effectiveness of traditional cataract surgical instruments combined with new multifunctional cataract assisted surgical instruments and traditional cataract surgical instruments alone.

Conditions

Cataract

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

Multi-functional instruments

Patients undergoing cataract with lens subluxation surgery with Multifunctional cataract-assisted retractor

Group Type: EXPERIMENTAL

multifunctional instruments

Intervention Type: DEVICE

Ophthalmic retractors can be used to lift the lens during surgery to assist in lens sucking or resection; Intraoperative injection of reagent, which has the advantage of retractable, micro-incision. Ophthalmic hooks can be used to secure support capsular bags; auxiliary cleavage; polishing capsule; Viscoelastic agent is injected as needed. The front end of the membranous cataract scissor is a capsular tearing forceps, and the capsule tearing and capsule scissors can be flexibly switched. All three instruments have the functions of two or three traditional instruments, which can be designed to reduce the number of times the instruments enter and exit the incision during surgery, improve surgical efficiency,

Traditional instruments

Patients undergoing cataract with lens subluxation surgery with traditional capsule retractor

Group Type: ACTIVE_COMPARATOR

traditional instruments

Intervention Type: DEVICE

traditional Cataract-assisted instruments for cataract operation.Puncture knives, microscissors, microscopic forceps, nucleus hooks, lens graft forceps, are used to cut the cornea, assist in removing the cloudy lens, suturing wounds.

Interventions

multifunctional instruments

Ophthalmic retractors can be used to lift the lens during surgery to assist in lens sucking or resection; Intraoperative injection of reagent, which has the advantage of retractable, micro-incision. Ophthalmic hooks can be used to secure support capsular bags; auxiliary cleavage; polishing capsule; Viscoelastic agent is injected as needed. The front end of the membranous cataract scissor is a capsular tearing forceps, and the capsule tearing and capsule scissors can be flexibly switched. All three instruments have the functions of two or three traditional instruments, which can be designed to reduce the number of times the instruments enter and exit the incision during surgery, improve surgical efficiency,

Intervention Type: DEVICE

traditional instruments

traditional Cataract-assisted instruments for cataract operation.Puncture knives, microscissors, microscopic forceps, nucleus hooks, lens graft forceps, are used to cut the cornea, assist in removing the cloudy lens, suturing wounds.

Intervention Type: DEVICE

Other Intervention Names

A set of available instruments including ophthalmic retractor, ophthalmic hook and membranous cataract scissors,; commonly used instruments for cataract surgery

Eligibility Criteria

Inclusion Criteria

• Clinical diagnosis of cataract Patients need to undergo cataract surgery

Exclusion Criteria

• Active intraocular inflammation The intraocular pressure (IOP) was higher than 25 mmHg The endothelial cell count (ECC) was less than 1,200 cells/mm2 Combined with other eye diseases Combined with other serious systemic diseases

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 80 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Second Affiliated Hospital, School of Medicine, Zhejiang University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Second Affiliated Hospital, Zhejiang University School of Medicine

Hangzhou, Zhejiang, China

Site Status: RECRUITING

Countries

China

Central Contacts

xu wen, PHD

Role: CONTACT

xuwen2003@zju.edu.cn

13858185223

Facility Contacts

Wen Xu

Role: primary

xuwen2003@zju.edu.cn

13858185223

Other Identifiers

2023-0370

Identifier Type: -

Identifier Source: org_study_id