Method and apparatus for trabeculectomy and suprachoroidal shunt surgery

• US 9,795,503 B2
• Filed: 10/18/2013
• Issued: 10/24/2017
• Est. Priority Date: 10/18/2013
• Status: Active Grant

• Current Assignee: Rodolfo Alfredo Perez Grossmann
• Original Assignee: Rodolfo Alfredo Perez Grossmann
• Inventors: Perez Grossmann, Rodolfo Alfredo
• Primary Examiner(s): Miles, Jonathan
• Application Number:
  US14/057,653
• Publication Number:
  US 20150112372A1
• Time in Patent Office: 1,467 Days
• CPC Class Codes: A61B 17/3205 Excision instruments
• CPC Class Codes: A61B 17/34 Trocars; Puncturing needles pointed biopsy instruments A61B10/0233; devices for piercing the ear-lobes A44C7/001; seals or hemostasis valves A61M39/06
• CPC Class Codes: A61F 9/00 Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand caps with means for protecting the eyes A42B1/018; visors for helmets A42B3/22; retractors A61B17/02; manipulators specially adapted for use in surgery A61B34/70; appliances to aid invalids to move about A61H3/00; exercisers for the eyes A61H5/00; eye baths A61H35/02; sunglasses or goggles having the same features as spectacles G02C
• CPC Class Codes: A61F 9/00781 Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment drainage implants in general A61M27/002

Abstract

A medical device and surgical procedure for the treatment of glaucoma in patients with primary open angle glaucoma, secondary open angle glaucoma, closed angle glaucoma, and refractory glaucoma. The device is inserted between two scleral flaps, cutting the trabecular meshwork and the sclera. When the device is removed, a proximal-facing cutting edge forms a tunnel allowing the aqueous humor to flow out of the anterior chamber into the suprachoroidal space.

Claims

1. A bent surgical device, comprising:

an elongate cannula including a cannula wall defining a cannula lumen;

a distal beveled end of the cannula including a long side and a short side;

a notch through the cannula wall, open to the cannula lumen and disposed proximally adjacent to the distal beveled end;

wherein the notch includes a proximal-facing cutting edge and the cannula forms a bend proximal to said notch,

wherein the notch is generally centered in parallel alignment with the long axis of the device at a point about half-way between the long side and the short side and about half-way between an outer side of the bend and an inner side of the bend, and

wherein the cannula lumen extends longitudinally starting from the distal beveled end and ending at the bend whereby the device is solid material proximal to the bend.

2. The bent surgical device according to claim 1, wherein the bend is between about 20 and 40 degrees.

3. The bent surgical device according to claim 1, wherein the bend is about 30degrees.

4. The bent surgical device according to claim 1, wherein the distal beveled end of the cannula is closed.

5. The bent surgical device according to claim 1, wherein the notch occupies 240 degrees of the circumference of the cannula wall.

6. The bent surgical device according to claim 1, wherein the device is solid steel proximal to the bend.

7. The bent surgical device according to claim 1, wherein the device has the dimensions of a 22 gauge needle.