WO2018087736A1 - Surgical retractor with connection to pedicle screws - Google Patents

Surgical retractor with connection to pedicle screws Download PDF

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Publication number
WO2018087736A1
WO2018087736A1 PCT/IB2017/057109 IB2017057109W WO2018087736A1 WO 2018087736 A1 WO2018087736 A1 WO 2018087736A1 IB 2017057109 W IB2017057109 W IB 2017057109W WO 2018087736 A1 WO2018087736 A1 WO 2018087736A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
foot blade
surgical retractor
foot
blade
Prior art date
Application number
PCT/IB2017/057109
Other languages
French (fr)
Inventor
Steven DELUCA
Rafi HAZIZA
Original Assignee
Premia Spine Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Premia Spine Ltd. filed Critical Premia Spine Ltd.
Publication of WO2018087736A1 publication Critical patent/WO2018087736A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/025—Joint distractors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
    • A61B17/7077—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for moving bone anchors attached to vertebrae, thereby displacing the vertebrae
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/0206—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with antagonistic arms as supports for retractor elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/025—Joint distractors
    • A61B2017/0256—Joint distractors for the spine

Definitions

  • the present invention relates generally to surgical retractors, and particularly to a retractor with a foot blade that connects to a pedicle screw, tower and the like.
  • the present invention seeks to provide a retractor with a blade that connects to a pedicle screw, tower and the like, as is described more in detail hereinbelow.
  • FIGs. 1A-1C are simplified front, side and sectional illustrations of a surgical retractor, respectively, in accordance with a non-limiting embodiment of the present invention, Fig. 1C being taken along lines A-A in Fig. IB;
  • Fig. 2 is a simplified illustration of the retractor with its foot blade connected to a tower (that is used to install rods and pedicle screws and the like), in accordance with a non-limiting embodiment of the present invention
  • Fig. 3 is a simplified illustration of the surgical retractor, a close-up view of Fig. 2, showing the foot blade of the retractor under a set screw of the pedicle screw and the bottom of the tower on the foot blade;
  • Fig. 4 is a simplified illustration of retractor blades connected to neighboring pedicle screw heads, in accordance with a non-limiting embodiment of the present invention.
  • FIG. 1A-1C illustrate a surgical retractor 10, in accordance with a non-limiting embodiment of the present invention.
  • the retractor 10 may include a shaft 12 with a length L, such as but not limited to, 50-120 mm.
  • Shaft 12 may optionally have a flat side 13 and an opposing side 14 that is rounded with a diameter B (Fig. 1A), such as but not limited to, 5-12 mm.
  • both sides of shaft 12 may be flat or curved or have other shapes.
  • a first (e.g., upper) end of shaft 12 may include a connector 16, which may be threaded or not, connectable to a system frame (not shown).
  • a second (e.g., lower) end of shaft 12 may have a foot blade 18 which is connectable to a pedicle screw head or tower and the like.
  • Foot blade 18 may extend perpendicular to shaft 12 and have an overall length C, such as but not limited to, 10-20 mm. Foot blade 18 has a toe 20 that may be perpendicular to foot blade 18 and parallel to shaft 12. Toe 20 may have a length E, such as but not limited to, 10-20 mm. Foot blade 18 preferably has a flat (upper) surface 22 that extends between shaft 12 and toe 20. The flat surface 22 may have a length D, such as but not limited to, 7-19 mm. As seen in Fig. 1A, the bottom of toe 20 may be rounded with a radius R, such as but not limited to, 3-10 mm.
  • FIGs. 2 and 3 illustrates retractor 10 with its foot blade 18 connected to a tower 24.
  • foot blade 18 is placed under a set screw 26 of a pedicle screw 28.
  • Set screw 26 sits on flat surface 22.
  • the bottom of the tower 24 can abut against foot blade 18.
  • FIG. 4 illustrates retractor blades 10 connected to neighboring pedicle screws 28 with the foot blades 18 underneath heads 30 of the pedicle screws 28.
  • the foot blade 18 connects firmly to the pedicle screw head 30 and provides significantly better ease and force of retraction.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Neurology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

A surgical retractor (10) includes a shaft (12). A first end of the shaft (12) includes a connector (16) connectable to a system frame. A second end of the shaft (12) includes a foot blade (18). The foot blade (18) includes a toe (20) parallel to the shaft (12) and perpendicular to the foot blade (18). The foot blade (18) of the surgical retractor (10) is connectable to a pedicle screw (28).

Description

SURGICAL RETRACTOR WITH CONNECTION TO PEDICLE SCREWS
FIELD OF THE INVENTION
The present invention relates generally to surgical retractors, and particularly to a retractor with a foot blade that connects to a pedicle screw, tower and the like.
BACKGROUND OF THE INVENTION
Many types of surgical retractors are used in surgery to retract tissues, bones and other anatomical structure during surgical procedures.
SUMMARY OF THE INVENTION
The present invention seeks to provide a retractor with a blade that connects to a pedicle screw, tower and the like, as is described more in detail hereinbelow.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be understood and appreciated more fully from the following detailed description taken in conjunction with the drawings in which:
Figs. 1A-1C are simplified front, side and sectional illustrations of a surgical retractor, respectively, in accordance with a non-limiting embodiment of the present invention, Fig. 1C being taken along lines A-A in Fig. IB;
Fig. 2 is a simplified illustration of the retractor with its foot blade connected to a tower (that is used to install rods and pedicle screws and the like), in accordance with a non-limiting embodiment of the present invention;
Fig. 3 is a simplified illustration of the surgical retractor, a close-up view of Fig. 2, showing the foot blade of the retractor under a set screw of the pedicle screw and the bottom of the tower on the foot blade; and
Fig. 4 is a simplified illustration of retractor blades connected to neighboring pedicle screw heads, in accordance with a non-limiting embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENTS
Reference is now made to Figs. 1A-1C, which illustrate a surgical retractor 10, in accordance with a non-limiting embodiment of the present invention.
The retractor 10 may include a shaft 12 with a length L, such as but not limited to, 50-120 mm. Shaft 12 may optionally have a flat side 13 and an opposing side 14 that is rounded with a diameter B (Fig. 1A), such as but not limited to, 5-12 mm. Alternatively, both sides of shaft 12 may be flat or curved or have other shapes. A first (e.g., upper) end of shaft 12 may include a connector 16, which may be threaded or not, connectable to a system frame (not shown). A second (e.g., lower) end of shaft 12 may have a foot blade 18 which is connectable to a pedicle screw head or tower and the like. Foot blade 18 may extend perpendicular to shaft 12 and have an overall length C, such as but not limited to, 10-20 mm. Foot blade 18 has a toe 20 that may be perpendicular to foot blade 18 and parallel to shaft 12. Toe 20 may have a length E, such as but not limited to, 10-20 mm. Foot blade 18 preferably has a flat (upper) surface 22 that extends between shaft 12 and toe 20. The flat surface 22 may have a length D, such as but not limited to, 7-19 mm. As seen in Fig. 1A, the bottom of toe 20 may be rounded with a radius R, such as but not limited to, 3-10 mm.
Reference is now made to Figs. 2 and 3, which illustrates retractor 10 with its foot blade 18 connected to a tower 24. As seen best in Fig. 3, foot blade 18 is placed under a set screw 26 of a pedicle screw 28. Set screw 26 sits on flat surface 22. The bottom of the tower 24 can abut against foot blade 18.
Reference is now made to Fig. 4, which illustrates retractor blades 10 connected to neighboring pedicle screws 28 with the foot blades 18 underneath heads 30 of the pedicle screws 28.
Unlike prior art retractors, which have no connection to a pedicle screw head, in the present invention the foot blade 18 connects firmly to the pedicle screw head 30 and provides significantly better ease and force of retraction.

Claims

CLAIMS What is claimed is:
1. Apparatus comprising:
a surgical retractor (10) comprising a shaft (12), a first end of said shaft (12) comprising a connector (16) connectable to a system frame and a second end of said shaft (12) comprising a foot blade (18), wherein said foot blade (18) comprises a toe (20) parallel to said shaft (12) and perpendicular to said foot blade (18).
2. The apparatus according to claim 1, wherein said foot blade (18) extends perpendicular to said shaft (12).
3. The apparatus according to claim 1, wherein said foot blade (18) has a flat surface (22) that extends between said shaft (12) and said toe (20).
4. The apparatus according to claim 1, wherein a bottom of said toe (20) is rounded.
5. The apparatus according to claim 1, wherein said surgical retractor (10) is connected to a pedicle screw (28), said pedicle screw (28) comprising a head (30) and a set screw (26), and said foot blade (18) is placed under said set screw (26).
6. The apparatus according to claim 3, wherein said surgical retractor (10) is connected to a pedicle screw (28), said pedicle screw (28) comprising a head (30) and a set screw (26), and said foot blade (18) is placed under said set screw (26) and said set screw (26) sits on said flat surface (22).
7. The apparatus according to claim 5, further comprising a tower (24) that abuts against said foot blade (18).
8. The apparatus according to claim 6, further comprising a tower (24) that abuts against said foot blade (18).
PCT/IB2017/057109 2016-11-14 2017-11-14 Surgical retractor with connection to pedicle screws WO2018087736A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662421453P 2016-11-14 2016-11-14
US62/421,453 2016-11-14

Publications (1)

Publication Number Publication Date
WO2018087736A1 true WO2018087736A1 (en) 2018-05-17

Family

ID=60937804

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2017/057109 WO2018087736A1 (en) 2016-11-14 2017-11-14 Surgical retractor with connection to pedicle screws

Country Status (1)

Country Link
WO (1) WO2018087736A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11826031B2 (en) 2020-12-09 2023-11-28 Alphatec Spine, Inc. Surgical retractors and methods of using the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030149341A1 (en) * 2002-02-06 2003-08-07 Clifton Guy L. Retractor and/or distractor for anterior cervical fusion
US20060247645A1 (en) * 2005-04-29 2006-11-02 Wilcox Bryan S Orthopedic instrument
US20080262318A1 (en) * 2007-04-17 2008-10-23 K2M, Inc. Minimally open interbody access retraction device and surgical method
WO2011059491A1 (en) * 2009-11-10 2011-05-19 Nuvasive Inc. Method and apparatus for performing spinal surgery
EP2705799A1 (en) * 2012-09-06 2014-03-12 Medacta International S.A. Surgical device for minimally invasive spinal fusion and surgical system comprising the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030149341A1 (en) * 2002-02-06 2003-08-07 Clifton Guy L. Retractor and/or distractor for anterior cervical fusion
US20060247645A1 (en) * 2005-04-29 2006-11-02 Wilcox Bryan S Orthopedic instrument
US20080262318A1 (en) * 2007-04-17 2008-10-23 K2M, Inc. Minimally open interbody access retraction device and surgical method
WO2011059491A1 (en) * 2009-11-10 2011-05-19 Nuvasive Inc. Method and apparatus for performing spinal surgery
EP2705799A1 (en) * 2012-09-06 2014-03-12 Medacta International S.A. Surgical device for minimally invasive spinal fusion and surgical system comprising the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11826031B2 (en) 2020-12-09 2023-11-28 Alphatec Spine, Inc. Surgical retractors and methods of using the same

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