Retractor support with adjustable retractor blades

• US 5,688,223 A
• Filed: 11/08/1995
• Issued: 11/18/1997
• Est. Priority Date: 11/08/1995
• Status: Expired due to Term

• Current Assignee: Minnesota Scientific Incorporated (Integra LifeSciences Holdings Corporation)
• Original Assignee: Minnesota Scientific Incorporated (Integra LifeSciences Holdings Corporation)
• Inventors: Rosendahl, Peter R.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): FLANAGAN, BEVERLY MEINDL
• Application Number:
  US08/555,265
• Time in Patent Office: 741 Days
• Field of Search: 600/201, 600/203, 600/206, 600/208, 600/210, 600/214, 600/215, 600/216, 600/217, 600/219, 600/224, 600/225, 600/227, 600/231, 600/233, 600/245, 600/246
• US Class Current: 600/215
• CPC Class Codes: A61B 17/0293 with ring member to support retractor elements

Abstract

A retractor apparatus for use in conducting a surgical operation through an incision in a patient. The retractor includes a retractor support, a plurality of surgical retractors, and a stretchable sleeve. The surgical retractors are mounted to the retractor support such that at least two of the surgical retractors are facing each other. The stretchable sleeve encircles the surgical retractors to form a continuous surface around the surgical retractors for engagement of tissue.

Claims

1. A retractor apparatus for use in conducting a surgical operation through an incision made in a patient, the retractor apparatus comprising:

a retractor support; and

a plurality of surgical retractors mounted to the retractor support such that at least two of the surgical retractors are facing each other, wherein at least one surgical retractor comprises;

a threaded rod mounted to the retractor support;

a retractor blade mounted to the threaded rod; and

an adjusting mechanism for adjusting the threaded rod radially with respect to the retractor support, wherein the adjusting mechanism includes an engagement portion having an aperture that is capable of receiving the threaded rod, wherein the aperture has a threaded surface section and a smooth surface section.

2. The retractor apparatus of claim 1 wherein each surgical retractor comprises:

a retaining mechanism for retaining the threaded rod and the adjusting mechanism in an assembled configuration with respect to the retractor support.

3. The retractor apparatus of claim 2 wherein the plurality of surgical retractors includes a first pair of surgical retractors and a second pair of surgical retractors, and wherein the second pair of surgical retractors is nestable between the first pair of surgical retractors when the first pair of surgical retractors and the second pair of surgical retractors are radially moved toward a central axis of the retractor support.

4. The retractor apparatus of claim 3 wherein each of the retractor blades in the second pair of surgical retractors is pivotable side to side with respect to the threaded rod to which the retractor blade is mounted.

5. The retractor apparatus of claim 2 wherein the retractor blade is pivotable with respect to the threaded rod to which the retractor blade is mounted to adjust a pitch of the retractor blade.

6. The retractor apparatus of claim 5 and further comprising a pitch control mechanism for adjusting the pitch of the retractor blade.

7. The retractor apparatus of claim 6 wherein the retractor blade is attached to the threaded rod with a blade swivel joint, the blade swivel joint being mounted to the retractor blade and having an angled surface opposite the retractor blade, wherein the threaded rod includes a central bore, and wherein the pitch control mechanism comprises a pitch control rod extending through the central bore and contacting the angled surface.

8. The retractor apparatus of claim 1 wherein the adjusting mechanism is in a fine adjustment mode when the threaded surface section is adjacent to the threaded rod and wherein the adjusting mechanism is in a coarse adjustment mode when the substantially smooth section is adjacent to the threaded rod.

9. The retractor apparatus of claim 8 wherein the adjusting mechanism is biased to the fine adjustment mode.

10. The retractor apparatus of claim 9 wherein the adjusting mechanism comprises:

a casing portion having an aperture that is capable of receiving the threaded rod; and

a spring portion for biasing the threaded surface section of the engagement portion in communication with the threaded rod.

11. The retractor apparatus of claim 1 wherein the retractor support includes a port that is adapted to receive a light source.

12. The retractor apparatus of claim 11 wherein the port includes a directing mechanism for directing light from the light source into the incision.

13. The retractor apparatus of claim 1, and further comprising a stretchable sleeve encircling the surgical retractors to form a continuous surface around the surgical retractors for engagement of tissue.

21. The retractor apparatus of claim 13 and further comprising a stretchable sleeve encircling the surgical retractors to form a continuous surface between the surgical retractors for retraction of tissue within the incision.

22. The retractor apparatus of claim 13 wherein the retractor support includes a port that is adapted to receive a light source.

23. The retractor apparatus of claim 22 wherein the port includes a directing mechanism for directing light from the light source into the incision.

14. A retractor apparatus for use in conducting surgical operations through an incision in a patient, the retractor apparatus comprising:

a retractor support;

a first pair of surgical retractors mounted to the retractor support for radial movement within the retractor support, wherein the first pair of surgical retractors each comprise;

a first threaded rod mounted to the retractor support; and

a first retractor blade mounted to the first threaded rod; and

a second pair of surgical retractors mounted to the retractor support for radial movement within the retractor support, wherein the second pair of surgical retractors each comprise;

a second threaded rod mounted to the retractor support; and

a second retractor blade pivotally mounted to the second threaded rod so that the second retractor blades are pivotable side to side with respect to the second threaded rod to which the second retractor blade is mounted, wherein pivoting the second retractor blades permits the second retractor blades to nest between the first retractor blades when the first and second retractor blades are radially moved toward a central axis of the retractor support and thereby reduces a profile of the first and second retractor blades when the first and second retractor blades are in a nested position.

15. The retractor apparatus of claim 14 wherein each surgical retractor in the first pair of surgical retractors comprises:

an adjusting mechanism for adjusting the first threaded rod radially with respect to the retractor support; and

a retaining mechanism for retaining the first threaded rod and the adjusting mechanism in an assembled configuration with respect to the retractor support.

16. The retractor apparatus of claim 15 wherein the first retractor blades are selected with a width that is greater than the second retractor blades.

17. The retractor apparatus of claim 15 wherein the adjusting mechanism comprises:

a casing portion having an aperture that is capable of receiving the first threaded rod;

an engagement portion operable within at least a portion of the casing portion, the engagement portion having an aperture that is capable of receiving the first threaded rod, the aperture having a threaded surface section and a substantially smooth surface section; and

a spring portion for biasing the threaded surface section of the engagement portion in communication with the first threaded rod.

18. The retractor apparatus of claim 15 wherein at least one of the first retractor blades is pivotable with respect to the first threaded rod to which the first retractor blade is mounted to adjust a pitch of the first retractor blade.

19. The retractor apparatus of claim 18 and further comprising a pitch control mechanism for adjusting the pitch of the first retractor blade.

20. The retractor apparatus of claim 19 wherein the first retractor blade is attached to the first threaded rod with a blade swivel joint, the blade swivel joint being mounted to the first retractor blade and having an angled surface opposite the first retractor blade, wherein the first threaded rod includes a central bore, and wherein the pitch control mechanism comprises a pitch control rod extending through the central bore and contacting the angled surface.

24. A retractor apparatus for use in conducting surgical operations through an incision in a patient, the retractor apparatus comprising:

a retractor support; and

a plurality of surgical retractors mounted to the retractor support, at least one surgical retractor comprising;

a threaded rod mounted to the retractor support, wherein the threaded rod has a first end and a second end;

a retractor blade mounted to the first end of the threaded rod, wherein the retractor blade is pivotable with respect to the threaded rod to adjust a pitch of the retractor blade; and

a pitch control mechanism for adjusting the pitch of the retractor blade, wherein the control mechanism includes a handle mounted with respect to the threaded rod proximate to the second end of the threaded rod, and wherein the handle permits the pitch of the retractor blade to be adjusted.

25. The retractor apparatus of claim 24 and further comprising:

an adjusting mechanism for adjusting the threaded rod radially with respect to the retractor support; and

a retaining mechanism for retaining the threaded rod and the adjusting mechanism in an assembled configuration with respect to the retractor support.

26. The retractor apparatus of claim 25 wherein the adjusting mechanism comprises:

a casing portion having an aperture that is capable of receiving the threaded rod;

an engagement portion operable within at least a portion of the casing portion, the engagement portion having an aperture that is capable of receiving the threaded rod, the aperture having a threaded surface section and a substantially smooth surface section; and

a spring portion for biasing the threaded section of the engagement portion in communication with the threaded rod.

27. The retractor apparatus of claim 25 wherein the plurality of surgical retractors includes a first pair of surgical retractors and a second pair of surgical retractors, and wherein the second pair of surgical retractors is nestable within the first pair of surgical retractors when the first pair of surgical retractors and the second pair of surgical retractors are radially moved toward a central axis of the retractor support for facilitating insertion of the surgical retractors within the incision.

28. The retractor apparatus of claim 27 wherein each of the retractor blades in the second pair of surgical retractors is pivotable side to side with respect to the threaded rod to which the retractor blade is mounted.

29. The retractor apparatus of claim 25 wherein the retractor blade is mounted to the threaded rod with a blade swivel joint, the blade swivel joint being mounted to the retractor blade and having an angled surface opposite the retractor blade, wherein the threaded rod includes a central bore, and wherein the pitch control mechanism comprises a pitch control rod extending through the central bore and contacting the angled surface.

30. The retractor apparatus of claim 25 and further comprising a stretchable sleeve encircling the surgical retractors to form a continuous surface around the surgical retractors for engagement of tissue.

31. The retractor apparatus of claim 25 wherein the retractor support includes a port that is adapted to receive a light source.

32. The retractor apparatus of claim 31 wherein the port includes a directing mechanism for directing light from the light source into the incision.