Support for fluid infusion tube for use during eye surgery

• US 5,685,841 A
• Filed: 08/14/1995
• Issued: 11/11/1997
• Est. Priority Date: 08/14/1995
• Status: Expired due to Term

• Current Assignee: Novartis Ag
• Original Assignee: Richard J. Mackool
• Inventors: Mackool, Richard J.
• Primary Examiner(s): McDermott, Corrine M.
• Assistant Examiner(s): BLYVEIS, DEBORAH
• Application Number:
  US08/514,555
• Time in Patent Office: 820 Days
• Field of Search: 604/22, 604/27, 604/30, 604/36, 604/138, 604/264, 604/280, 604/282, 604/35, 138/172-174
• US Class Current: 604/22
• CPC Class Codes: A61B 2017/320084 Irrigation sleeves
• CPC Class Codes: A61F 9/00745 using mechanical vibrations, e.g. ultrasonic
• CPC Class Codes: A61M 25/0043 characterised by structural features
• CPC Class Codes: A61M 25/005 with embedded materials for reinforcement, e.g. wires, coils, braids
• CPC Class Codes: A61M 25/0054 with regions for increasing flexibility

Abstract

A support for reinforcing a fluid infusion tube to prevent it from kinking during a surgical operation. The support runs to the distal end of the tube and is either embedded in the wall of the tube, adhered or heat sealed to the tube either on the tube'"'"'s interior surface or on the exterior surface, or loosely retained within the lumen. The support may be coiled about the exterior or interior of the tube to provide the desired rigidity to prevent kinking.

Claims

1. A fluid conveying device that resists kinking, comprising:

an elongated tube that is compressible and pliable and which has a lumen;

a handpiece with an interior containing an aspiration needle and a sleeve defining an irrigation channel between the needle and the sleeve, said elongated tube extending exteriorly of said handpiece and being connected to said handpiece in operative fluid communication with said interior so that fluid flows between the lumen of said tube and said interior of said handpiece; and

a support reinforcing said tube, said support extending in a direction of elongation of said tube and being rigid to resist kinking of said tube and thereby being less compressible and pliable than said tube.

2. A device as in claim 1, further comprising an adhesive material adhering said support to said tube.

3. A device as in claim 2, wherein said adhesive material is between an exterior of said support and an interior of said tube.

4. A device as in claim 2, wherein said adhesive is between an exterior of said tube and an exterior of said support.

5. A device as in claim 1, wherein said support is heat sealed to said tube.

6. A device as in claim 1, wherein said support is embedded within a wall of said tube.

7. A device as in claim 1, wherein said tube is split longitudinally to define a slit, said support closing said slit.

8. A device as in claim 1, wherein said support coils about an exterior of said tube.

9. A device as in claim 1, wherein said support is arranged within said lumen of said tube.

10. A device as in claim 9, wherein said support is loose within said lumen and free of adherence to said tube.

11. A device as in claim 1, wherein said support is a rigid strip.

12. A method of preventing inadvertent kinking, comprising the steps of:

conveying fluid through an elongated tube to an interior of a handpiece having irrigation and aspiration channels within said interior, the tube being connected to and in fluid communication with said interior of the handpiece; and

reinforcing said tube with a support to prevent kinking of said tube, said tube being compressible and pliable, said support being rigid to resist the kinking of said tube and thereby being less compressible and pliable than said tube, said support extending in a direction of elongation of said tube.

13. A method as in claim 12, wherein said irrigation channel is defined by a hollow needle, further comprising the step of vibrating the hollow needle within the handpiece and channeling the fluid exteriorly of said hollow needle and interiorly of said hollow needle such that the fluid travels within said hollow needle in a direction opposite to that traveled by the fluid exteriorly of said hollow needle, the step of conveying including channeling the fluid to flow exteriorly of said hollow needle before the fluid flows interiorly of said hollow needle.

14. A flow apparatus that prevents inadvertent kinking during eye surgery, comprising:

an elongated tube;

a phacoemulsification handpiece connected to and in operative fluid communication with said tube for the conveyance of fluid between said tube and said phacoemulsification handpiece; and

a support that reinforces said tube to prevent kinking of said tube, said tube being compressible and pliable, said support being rigid to resist kinking of said tube and thereby being less compressible and pliable than said tube and extending in a direction of elongation of said tube.

15. An apparatus as in claim 14, further comprising a vibratory hollow needle within the phacoemulsification handpiece;

and a channel arranged exteriorly of said hollow needle within said handpiece, said tube being in fluid communication with said channel so that the fluid flows from said tube and into said channel before flowing within said vibrating hollow needle.

16. An apparatus as in claim 14, further comprising a fluid supply vessel, said tube extending between said fluid supply vessel and said handpiece.

17. An apparatus as in claim 14, wherein said support is a rigid strip.

18. An apparatus as in claim 17, wherein said strip is on an exterior of said tube.

19. An apparatus as in claim 17, wherein said tube defines a lumen, said strip being within said lumen.

20. An apparatus as in claim 17, wherein said strip is embedded within said tube.