Surgical retractors and methods for using surgical retractors

Abstract

The present invention provides a surgical retractor configured to allow access to a surgical site, such as a portion of the patient's spine, and a method for using the surgical retractor. [Solution] A surgical retractor comprising a base portion and two retractor blades, and a method of using such a surgical retractor are disclosed herein. The base portion has (a) two extension portions, each having a receiving area, and (b) one or more engaging portions. Each retractor blade has both a blade portion having a proximal end and a distal end, and an arm portion extending from the proximal end of the blade portion. Each arm portion is received by its respective receiving area.

Claims

1. A first receiving area which is a first passage passing through the base portion, a second receiving area which is a second passage passing through the base portion, and the base portion having one or more engaging portions, A rear retractor blade having a proximal end and a distal end, the rear retractor blade having a first retractor arm extending from the proximal end and configured to slide and be received by a first receiving region of the base portion, A first auxiliary retractor blade having a proximal end and a distal end, the first auxiliary retractor blade having a retractor arm slidably received by a first housing configured to be detachably attached to the first retractor arm, A front retractor blade having a proximal end and a distal end, the front retractor blade having a second retractor arm extending from the proximal end and configured to slide and be received by a second receiving region of the base portion, A second auxiliary retractor blade having a proximal end and a distal end, the second auxiliary retractor blade having a retractor arm that is slidably received by a second housing configured to be detachably attached to the second retractor arm, and It is equipped with, The rear retractor blade, the first auxiliary retractor blade, the front retractor blade, and the second auxiliary retractor blade together form an adjustable surgical passage. A surgical retractor, wherein the rear retractor blade, the first auxiliary retractor blade, the front retractor blade, and the second auxiliary retractor blade are independently adjustable relative to the base portion.

2. The surgical retractor according to claim 1, wherein the rear retractor blade and the front retractor blade are fixed at an angle to the base portion.

3. The surgical retractor according to claim 1, wherein the first auxiliary retractor blade and the second auxiliary retractor blade are fixed to the first housing and the second housing at an angle to each other.

4. The surgical retractor according to claim 1, wherein the first retractor arm and the second retractor arm are each movable parallel to each other through the first receiving region and the second receiving region, respectively.

5. The surgical retractor according to any one of claims 1 to 4, wherein at least one of the rear retractor blade and the front retractor blade is integrated with the first retractor arm or the second retractor arm.

6. The rear retractor blade has an axis that is substantially perpendicular to the axis determined by the first retractor arm, The front retractor blade has an axis that is substantially perpendicular to the axis determined by the second retractor arm, The surgical retractor according to any one of claims 1 to 4, wherein the axes of the rear retractor blade and the front retractor blade are substantially parallel to each other and remain substantially parallel when the rear retractor blade and the front retractor blade are independently adjusted relative to the base portion to adjust the size of the surgical passage.

7. The surgical retractor according to any one of claims 1 to 4, wherein at least one of the rear retractor blade and the front retractor blade has at least one alignment function at its proximal end to indicate whether or not at least one of the rear retractor blade and the front retractor blade of the surgical retractor is oriented perpendicular to the surgical site, which is the intervertebral disc space of the patient's spine.

8. The surgical retractor according to claim 7, wherein the alignment function is identifiable by X-ray imaging.

9. The surgical retractor according to claim 7, wherein a through hole is provided in the base of the first retractor arm or the second retractor arm as the alignment function.

10. The surgical retractor according to claim 7, wherein, as the alignment function, a through hole with a triangular opening shape is provided at the base of the first retractor arm or the second retractor arm, and the vertex of the triangle points toward the surgical passage.

11. The surgical retractor according to claim 7, wherein when the surgical retractor enters a lateral position of the patient's spine, the surgical retractor is oriented perpendicular to the intervertebral disc space.

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