TROCAR AND TROCAR-NEEDLE INTEGRATED SYSTEM FOR GLAUCOMA DRAINAGE SURGERY

• US 20140171852A1
• Filed: 12/11/2013
• Published: 06/19/2014
• Est. Priority Date: 12/19/2012
• Status: Abandoned Application

• Current Assignee: Ophthalmic Implants Private Limited
• Original Assignee: Ophthalmic Implants Private Limited
• Inventors: Khor, Eugene
• Application Number:
  US14/103,166
• Publication Number:
  US 20140171852A1
• Time in Patent Office: Days
• US Class Current: 604/8
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61B 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• CPC Class Codes: A61F 9/00781 Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment drainage implants in general A61M27/002

Abstract

A trocar comprising a hollow barrel having an open side extending along the hollow barrel, the hollow barrel terminating at a first end with a pointed tip for incision of the trocar through tissue and having a needle connecting part. The open side may extend through the needle connecting part. The needle connecting part may be a collar. The trocar is used in combination with a needle. A method of use of the trocar is disclosed.

Claims

1. A trocar comprising;

a hollow barrel having an open side extending along the hollow barrel, the hollow barrel terminating at a first end with a tip for placement of the trocar through tissue.

2. The trocar of claim 1 in which the tip is rounded.

3. The trocar of claim 1 having a needle connecting part at an opposed end to the first end.

4. The trocar of claim 3 in which the open side extends through the needle connecting part.

5. The trocar of claim 3 in which the needle connecting part is a collar.

6. The trocar of claim 1 in combination with a needle.

7. The trocar of claim 6, in combination with the needle, in which the needle has a slot for receiving the trocar.

8. A trocar and needle assembly, comprising:

a needle having a handle;

a trocar having a hollow barrel with an open side extending along the hollow barrel, the hollow barrel terminating at a first end with a tip for placement of the trocar through tissue, the trocar having a needle connecting part at an end opposed to the first end; and

the handle having a connecting part for holding the trocar around the needle.

9. The trocar and needle assembly of claim 8 in which the handle comprising parts that slide relative to each other to disengage the trocar from the handle.

10. The trocar and needle assembly of claim 8 in which the tip is rounded.

11. The trocar and needle assembly of claim 8 in which the needle connecting part is a collar.

12. A method of placing a drainage tube in an eye, comprising;

placing a trocar on the eye, where the trocar has a trough shape and a base, with the trough opening in a direction that allows access for insertion of a drainage tube;

placing a drainage tube in the trocar ready for insertion of the tube;

turning the trocar to allow removal of the trocar; and

removing the trocar leaving the tube in place on the eye.