Retractor Tool For Minimally Invasive Hip Replacement Surgery

Inactive Publication Date: 2015-06-25
WILSON GREATBATCH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]Both retractor embodiments comprise a shaft that connects the handle portion to the wound contact portion and distal portion of the retractor. In addition to reducing tissue necrosis, the curved cross-sectional profile of

Problems solved by technology

The usual reasons for hip replacement are osteoarthritis, rheumatoid arthritis and traumatic arthritis, all of which can cause pain and stiffness that limit mobility and the ability to perform daily living activities.
However, such procedures require a longer recovery period and rehabilitation time for the patient.
However, the use of co

Method used

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  • Retractor Tool For Minimally Invasive Hip Replacement Surgery
  • Retractor Tool For Minimally Invasive Hip Replacement Surgery
  • Retractor Tool For Minimally Invasive Hip Replacement Surgery

Examples

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Embodiment Construction

[0036]Now turning to the figures, FIGS. 1-3 illustrate some features of the musculoskeletal anatomy, specifically the hip region 10 of a human. FIGS. 4-18 illustrate embodiments of orthopedic retractor tools of the present invention. As shown in FIGS. 1-3, there are several muscles that act to stabilize the femoral head of a femur bone 12 in the acetabulum (FIG. 2). These muscles include the short external rotator muscles (i.e., the piriformis 14, the superior gemellus 16, the obturator internus 18, the inferior gemellus 20, the obturator externus (not shown) and the quadratus femoris 22). The gluteus maximus (not shown) extends over these short external rotator muscles. The femoral head 26 is enclosed in a fibrous capsule 28, which attaches to the hip bone outside the acetabular lip 30 and to the base of the neck of the femoral head 26.

[0037]The MIS posterior hip replacement approach has traditionally involved first a skin incision, followed by an incision in the fascia lata, and t...

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Abstract

A retractor system, kit and method of use includes a plurality of retractors for use in retracting a wound during a minimally-invasive hip replacement surgery to define an access space to a surgical site is discussed. Each of the retractors comprises a handle portion configured to be held by a user, a curved bend portion distal of the handle portion, and a wound contact portion attached to the curved bend portion. The wound contact portion is configured to contact tissue of the wound when at least a portion of the retractor is inserted through a skin incision that defines the wound. Each retractor also has a distal portion disposed distally of the wound contact portion, wherein the wound contact portion has a generally curved cross-sectional profile perpendicular to its length that is configured to prevent necrosis of the tissue during retraction. In addition, the cross-sectional profile provides an improved line of sight during the surgical procedure. Furthermore, the cross-sectional profile prevents the jamming of a cutting device, such as a reamer inserted through the incision, while the retractors retract the wound.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from U.S. Provisional Patent Application Ser. Nos. 61 / 368,754, filed Jul. 29, 2010; 61 / 368,761, filed Jul. 29, 2010; and 61 / 368,768 filed Jul. 29, 2010.FIELD OF THE INVENTION[0002]The present invention is directed to minimally invasive surgery, and more particularly to retractor tools for use in minimally invasive hip replacement surgery.PRIOR ART[0003]Approximately 200,000 hip replacements are performed each year in the United States and the number is expected to continue to grow as the population continues to age. The usual reasons for hip replacement are osteoarthritis, rheumatoid arthritis and traumatic arthritis, all of which can cause pain and stiffness that limit mobility and the ability to perform daily living activities. Hip replacement surgery is usually performed where other measures (e.g. physical therapy, medications, and walking aids) are unable to overcome the chronic pain and disability ass...

Claims

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Application Information

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IPC IPC(8): A61B17/02A61F2/46A61B19/00
CPCA61F2/46A61B17/0218A61B17/025A61B2017/0088A61B2017/0275
Inventor RYSHKUS, CHADROGER, DOUGLAS J.CRANDALL, JONATHAN P.
Owner WILSON GREATBATCH LTD
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