Soft tip cannula and methods for use thereof

• US 6,800,076 B2
• Filed: 10/18/2001
• Issued: 10/05/2004
• Est. Priority Date: 10/18/2000
• Status: Expired due to Term

• Current Assignee: Iridex Corporation
• Original Assignee: Retinalabs, Inc. (Iridex Corporation)
• Inventors: Humayun, Mark
• Primary Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US09/982,549
• Publication Number:
  US 20020121281A1
• Time in Patent Office: 1,083 Days
• Field of Search: 606/1, 606/2, 606/4-6, 606/107, 128/898
• US Class Current: 606/4
• CPC Class Codes: A61B 2090/3614 using optical fibre
• CPC Class Codes: A61B 2090/3937 Visible markers
• CPC Class Codes: A61F 9/007 Methods or devices for eye surgery
• CPC Class Codes: A61M 1/84 Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 13/003 Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing
• CPC Class Codes: A61M 2210/0612 Eyes

Abstract

A surgical device having a body portion that is gripped by a user, the body portion having a distal end equipped with a soft tip and the proximal end optionally connected to an external vacuum or gas/air source. The surgical device is particularly suitable for use in ophthalmic surgical procedures to remove fluid from the eye or introduce gas/air into the eye. The soft tip is fabricated to protect the delicate tissues if the eye and is further modified so as to enhance a user'"'"'s visibility of the device in the surgical field.

Claims

1. A method for performing an ophthalmic surgical procedure comprising the steps of:

(a) providing a surgical device comprising;

an elongate body portion;

the elongate body portion having a proximal end and a distal end;

a soft tip at the distal end of the body portion;

wherein the soft tip is at least partially colored so as to enhance a user'"'"'s visibility of the soft tip in the surgical area;

(b) making an incision in the eye of a patient to access the treatment area;

(c) inserting the surgical device into the treatment area through the incision;

(d) performing the ophthalmic surgical procedure using the surgical device; and

(e) removing the delivery device from the treatment area

wherein the ability to visualize the soft tip during the ophthalmic surgical procedure is enhanced.

2. The method of claim 1, further comprising the step of shining a light onto the soft tip while performing the ophthalmic surgical procedure.

3. The method of claim 2, wherein a fiber optic probe is used to shine the light onto the soft tip.

4. The method of claim 1, further comprising the step of causing the soft tip to glow or fluoresce.

5. The method of claim 4, wherein a light is shone on the soft tip to cause the soft tip to glow or fluoresce.

6. The method of claim 1, wherein the surgical device further comprises a light source in connection with the soft tip and wherein the method further comprises illuminating the soft tip with the light source.

7. The method of claim 6, further comprising the step of illuminating the surgical site with the light source.

8. The method of claim 1, wherein the soft tip is formed of a soft material at least partially colored to enhance a user'"'"'s visibility of the soft tip.

9. The method of claim 7, wherein the soft tip material has one or more markings to enhance a user'"'"'s visibility of the soft tip.

10. The method of claim 9, wherein the one or more markings is a fiducial ring.

11. The method of claim 8, wherein the soft tip material is at least partially colored with a fluorescent material.

12. The method of claim 1, the body portion of the device is hollow and the device is an aspirating device and wherein the method of performing an ophthalmic surgical procedure comprises a vitreoretinal surgical procedure comprising the steps of:

cutting the vitreous body away from the retina;

removing the a vitreous body from the eye;

pushing the retina back against the wall of the eye;

draining any subretinal fluid present between the retina and the back wall of the eye; and

allowing clear fluid from the blood to fill the vitreous cavity.

13. The method of claim 12, wherein the surgical device is an aspirating device and the surgical device is used to introduce air or gas into the vitreous cavity to push the retina back against the wall of the eye.

14. The method of claim 12, wherein the soft tip of the surgical device is used to push the retina back against the wall of the eye.

15. The method of claim 12, wherein the surgical device is an aspirating device and the surgical device is used to drain any subretinal fluid present between the retina and the back wall of the eye.

16. The method of claim 12, wherein the soft tip is embedded with abrasive materials and wherein the method further comprises the step of scraping scar tissue and eye tissues to increase visual acuity outcomes.

17. A method for performing an ophthalmic surgical procedure comprising the steps of:

(a) providing a surgical device comprising;

an elongate body portion;

the elongate body portion having a proximal end and a distal end;

a soft tip at the distal end of the body portion;

wherein the soft tip is at least partially colored so as to enhance a user'"'"'s visibility of the soft tip in the surgical area;

(b) making an incision in the eye of a patient to access the treatment area;

(c) inserting the surgical device into the treatment area through the incision;

(d) performing the ophthalmic surgical procedure; and

(e) removing the surgical device from the treatment area

wherein the ability to visualize the soft tip during the ophthalmic surgical procedure is enhanced.