WO2016160397A1 - Montage de lame d'écarteur - Google Patents

Montage de lame d'écarteur Download PDF

Info

Publication number
WO2016160397A1
WO2016160397A1 PCT/US2016/023409 US2016023409W WO2016160397A1 WO 2016160397 A1 WO2016160397 A1 WO 2016160397A1 US 2016023409 W US2016023409 W US 2016023409W WO 2016160397 A1 WO2016160397 A1 WO 2016160397A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
stem member
retractor blade
stem
groove
Prior art date
Application number
PCT/US2016/023409
Other languages
English (en)
Inventor
Daniel Bass
Thomas T. TERRAMANI
Adam B. YOUNG
Original Assignee
Tedan Surgical Innovations, LLC.
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 Tedan Surgical Innovations, LLC. filed Critical Tedan Surgical Innovations, LLC.
Priority to PCT/US2016/023409 priority Critical patent/WO2016160397A1/fr
Publication of WO2016160397A1 publication Critical patent/WO2016160397A1/fr

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

Definitions

  • the invention relates to a retractor blade assembly. More particularly, the invention relates to a retractor blade assembly having a connector and retractor blade and pin member configuration for facilitating use in both a locked mode and an unlocked swivel mode.
  • Surgical procedures often require the creation of a surgical exposure to allow a surgeon to reach deeper regions of the body.
  • the surgical exposure is usually started with an incision of a suitable depth.
  • Surgical instruments known as retractors are then inserted into the incision and used to pull back skin, muscle and other soft tissue to permit access to the desired area.
  • a typical retractor is made up of a retractor body attached to one or more retractor blades.
  • Retractor blades are smooth, thin plates with dull edges that are inserted into the incision to pull back the tissue.
  • Retractor blades come in many different sizes depending on the particular application and physical characteristics of the patient.
  • Retractor blades may be slightly curved or completely flat and may have end prongs of various configurations to make it easier to pull back tissue.
  • the retractor blades may be attached to a wide variety of retractor bodies, such as for hand-held and self-retaining retractors.
  • Hand-held retractors are made up of a simple grip attached to a retractor blade.
  • the retractor blade may be fixed or interchangeable.
  • the retractor blade is inserted into the incision and then the grip is used to pull back the blade to create the surgical exposure.
  • the grip may be attached at an angle to the retractor blade to make it easier to pull back on the blade.
  • Hand-held retractors must be held in place by hand in order to maintain the surgical exposure.
  • Self-retaining retractors have specialized retractor bodies that allow them to maintain a surgical exposure without needing to be held in place by hand. Two common self-retaining retractors are longitudinal retractors and transverse retractors.
  • Longitudinal retractors have a retractor body made up of two seesawing arms with a pair of opposed retractor blades on their respective ends.
  • the retractor body typically has a ratcheting mechanism to lock apart the two opposed retractor blades and hold them in place. This maintains the surgical exposure without the need for the retractor to be held in place by hand.
  • the two arms may be hinged to facilitate access to the retraction site.
  • the retractor blades may be either fixed or interchangeable.
  • Transverse retractors have a retractor body made up of a transverse rack with a fixed arm and a sliding arm.
  • the fixed arm and sliding arm have opposed retractor blades on their respective ends.
  • the sliding arm typically has a turnkey that operates a ratcheting mechanism, which ratchets the sliding arm away from the fixed arm and locks apart the retractor blades.
  • the two arms may be hinged to facilitate access to the retraction site.
  • the retractor blades may be either fixed or interchangeable.
  • the retractor blade assembly includes an arm member and a retractor blade having stem member provided at the top of the blade.
  • the stem member including a first pin member, provided at an upper portion of the stem member, having at least one abutment extending outward from the stem member.
  • the stem member further includes a first groove provided below the first pin member, provided about the circumference of the stem member.
  • the stem member further includes a second groove provided below the first groove, provided about the circumference of the stem member, and a second pin member having at least one abutment extending from the second groove.
  • the retractor blade assembly further includes a blade connector including a body including a first aperture and at least one notch, extending from a top surface of the body through a bottom surface of the body and configured to receive insertion of the stem member therein.
  • the blade connector further includes a second aperture extending from a side wall into the interior of the body in communication with the first aperture, and a locking assembly provided in the second aperture configured to selectively engage the first groove and the second groove of the stem member in an inserted position.
  • the locking assembly engages the first groove of the stem member.
  • the first pin member is located above the top surface of the blade connector and the second pin is located below the bottom surface of the blade connector, permitting the stem member and connected retractor blade to rotate.
  • the locking assembly engages the second groove of the stem member preventing vertical movement of the stem member, and at least one of the abutments of the second pin member is located in at least one of the notches of the blade connector, thereby locking the blade member in a locked position.
  • the stem member is in an inserted position with the blade connector, the abutment of first pin member permits removal of the stem member from the blade connector when aligned with at least one notch of the blade connector and prevents removal of the stem member when misaligned aligned.
  • FIG. 1 is a side perspective view of a retractor blade assembly with a retractor blade in an unlocked rotatable mode
  • FIG. 2A is an exploded top perspective view of the retractor blade assembly of FIG.l illustrating the connection between a blade connector and the retractor blade;
  • FIG. 2B is a top sectional view of the retractor blade of FIG. 1, illustrating the offset relationship of a first pin member and a second pin member.
  • FIG. 3A is a top perspective view of the retractor blade assembly of FIG.l, illustrating the blade connector and the retractor blade in an engaged position;
  • FIG. 3B is a top view of the retractor blade assembly of FIG. 1
  • FIG. 3C is a side sectional view of the retractor assembly of FIG. 1, illustrating the blade connector and retractor blade connection;
  • FIG. 4 is a top sectional view of the retractor blade assembly of FIG. 1, in a swivel mode;
  • FIG. 5 is an elevational perspective view of the retractor blade assembly of FIG. 1, illustrating the retractor blade operatively connected to the retractor arm;
  • FIG. 6 is an elevational perspective view of the retractor blade assembly, illustrating the retractor blade, in a locked mode
  • FIG. 7 is a top view of the retractor blade assembly of FIG. 6, in a locked mode
  • FIG. 8 is a side sectional view of the retractor blade assembly of FIG. 6 in a locked mode
  • FIG. 9 is a top sectional view of the retractor blade assembly of FIG. 6 in a locked mode
  • the retractor blade assembly 10 generally includes a retractor arm 14, a blade connector 16 having an aperture 32 and one or more notches 34a, 34b extending through the connector 16.
  • the blade connector 16 is operatively connected to the retractor arm 14, and the retractor blade 12 is removably connected to the blade connector 16, and is capable of being selectively moved by a user between a rotatable swivel mode and a locked mode.
  • the retractor blade 12 generally includes a stem member 20, which extends in a generally upward direction from a generally top portion 18 of the retractor blade 12.
  • the stem member 20 is configured to facilitate locking and rotatable engagement of the retractor blade 12 with the connector 16.
  • the stem member 20 may have a generally cylindrical body 42 to facilitate rotation of retractor blade 12 relative to the blade connector 16.
  • the body 42 may have a variety of shapes, sizes and dimensions to facilitate locking engagement, as well as, rotatable or slidable movement with respect to the blade connector 16.
  • the stem member 20 further includes a first pin member 22, provided at a generally upper or top portion of the stem member 20.
  • the first pin member 22 may include one or more abutments 23a, 23b, adapted for locking engagement with the first aperture 32 and respective notches 34a and 34b formed in the blade connector 16, which will be further described later herein.
  • the first pin member 22 provides dual abutment members 23a, 23b.
  • the retractor assembly 10 may function with the first pin member 22 having a singular abutment member 23, as well as more than two abutment members 23, for facilitating operative engagement with the first aperture 32 and notches 34a, 34b of the blade connector 16.
  • the stem member 20 may further include a first groove 24 or top groove, formed on the stem member 20 generally below the first pin member 22.
  • the first groove 24 is generally formed around the circumference of the stem member 20, providing a cut-out surface to receivably engage components provided in the interior of the blade connector 16.
  • the stem member 20 further includes a second groove 26 or bottom groove portion, spaced generally below the first groove 24.
  • the second groove 26 is provided around the circumference of the stem member 20, and is also configured to receivably engage components provided in the interior of the blade connector 16, when the stem member 20 is inserted in the blade connector 16.
  • the stem member 20 mounted within the second groove 26, the stem member 20 includes a second pin member 28, extending generally outward therefrom.
  • the second pin member 28 generally includes one or more abutments 25a, 25b, which extend in generally opposing directions, and are configured for operative engagement with the aperture 32 and notches 34a, 34 of the blade connector 16 to lock the retractor blade 12 at a selected position or angle relative to the locking arm 14.
  • the retractor blade 12 includes a first portion 30, an opposing second portion 36 and a top portion 18.
  • the second portion 36 has outer edges 37a, 37b which define a plane P t .
  • One of the abutments 25b of the second pin member 28 extend generally outward from the body 42 perpendicular to the plane P l5 .
  • the abutment 25b on generally the same side of the second portion 36 of the retractor blade 12.
  • the opposing abutment 25a extends generally outward from the body 42 in an opposite direction from the body 42, outward from the first portion 30 of the retractor blade 12.
  • the first pin member 22 and abutment 23a and second pin member 28 and abutment 25a are offset from each other about the circumference of the stem member 20 by approximately 90 degrees.
  • the first pin member 22 and abutment 23a define a plane P 2 which is parallel to the plane P l5 and as such the first pin member and respective abutments are parallel to the plane P
  • the first pin member 22 and second pin member 28 may individually and/ or collectively be configured at different selected locations on the stem member 20, to facilitate locking engagement of the retractor blade 12 with the blade connector 16 aperture 32 and respective notches 34a, 34b at various positions.
  • the blade connector 16 is provided generally at an end portion of the retractor arm 14.
  • the blade connector 16 includes a pivot 38 or hinge connection between the blade connector 16 and locking arm 14, permitting the blade connector 16, and connected retractor blade 12, to be rotated in a generally upward and downward movement with respect to the locking arm 14 by the user.
  • the blade connector 16 has a first aperture 32 formed in a generally central portion of the connector 16.
  • the first aperture 32 extends through the blade connector 16 from a top portion 44 to the bottom portion 46, and is configured to receive the stem member 20 therein.
  • the first aperture 32 has a generally cylindrical shape with a generally circular cross-section to receive the stem member 20 therein.
  • the blade connector 16 further includes one or more notches 34a, 34b provided about the outer edge of the first aperture 32.
  • the notches 34a, 34b are configured to cooperatively receive the pin members 22 and 28 therein, to permit the rotator blade 12 to operate in both in a swivel or rotatable mode, with respect to the retractor arm 14. Similar to the first aperture 32, the notches 34a, 34b extend from the top surface 44 to the bottom surface 46 of the blade connector 16.
  • dual notches 34a, 34b permit for slidable movement of the respective abutments 23a, 23b and 25a, 25b therein.
  • the notches 34a, 34b are also configured to prevent rotatable movement of the stem member 20 once inserted in the first aperture 32 and the abutments 25a, 25b of the second pin member 28 are positioned in the respective notches 34a, 34b.
  • the second pin member 28 is positioned such that when the abutments 25a, 25b engage respective notches 34a, 34b, the retractor blade 12 may be locked with the outer surface 30 of the retractor blade 12 at approximately 90 degrees relative to the locking arm 14.
  • the notches 34a, 34b it is contemplated that the retractor blade 12, may be locked at any selected angle with respect to the locking arm 14.
  • the blade connector 16 further includes a second aperture 60 formed generally along a sidewall 62 of the blade connector 16.
  • the second aperture 60 extends from an outer wall 62, through the connector 16, and into communication with the first aperture 32.
  • the second aperture 60 is configured to retain a control assembly 64 therein for selectively locking the stem member 20 vertically within the first aperture 32, when the retractor assembly 10 is in the locked mode, and for facilitating rotation of the stem member 20 of the retractor blade 12 in the unlocked swivel mode.
  • control assembly 64 generally includes a fastener 66 or adjustment member, a biasing member 68, such as a spring, for example, and a ball member 70.
  • the control assembly 64, and specifically the ball member 70 engages the first groove 24 of the stem member 20 in a rotatable mode, and the second groove 26 in a locked mode.
  • the retractor blade 12 is aligned with the blade connector 16, such that the stem member 20 is aligned with the first aperture 32.
  • the stem member 20 is inserted vertically into the first aperture 32, such that the first pin member 22 is aligned with a first notch member 34a and second notch member 34b.
  • the stem member 20 is slid through the first aperture 32 until the ball member 70 of the control assembly 64 is aligned with the first groove 24 and, the first pin member 22 is positioned generally above the surface 44 of the blade connector 16.
  • the second pin member 28 is positioned below the connector 16, proximate to the lower surface 46 of the blade connector 16 and the control assembly 64 engages the first groove 24.
  • the ball member operatively engages the first groove 24, permitting the stem member 20, within the first aperture 20, to rotate or swivel the retractor blade 12 freely with respect to the retractor arm 14.
  • the retractor blade 12 is swiveled such that the second pin member 26 and respective abutment 25a, 25b align with the respective notches 34a, 34b, permitting the stem member 20 to be moved vertically upward into the first aperture 20.
  • the blade 12 is prevented from rotation, and is locked at a selected angle relative to the locking arm 14, which in this case is a 90 degree angle relative to the locking arm 14.
  • the blade member and notch may be provided at any desired angle or at multiple angles, permitting the blade member to be locked at a selected angle.
  • the retractor blade 12 In the inserted position, the retractor blade 12 is moved vertically until the ball member 70 engages the second groove 26 preventing further vertical movement upward and downward of the stem member 20 within the first aperture 20.
  • the biasing member 68, and pressure applied by the ball member 70 on the second groove 26 may be adjusted by moving the adjustment fastener 66.
  • the adjustable screw To release the stem member 20 from the first aperture 20, the adjustable screw is engaged by the user, releasing pressure from the biasing member 68 acting on the ball member 70 and second groove 26.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (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

Un montage de lame d'écarteur comprend un élément de bras, un connecteur de lame et une lame d'écarteur ayant un élément de tige prévu au niveau de la partie supérieure de la lame. L'élément de tige comprend un premier élément de broche, prévu au niveau d'une partie supérieure de l'élément de tige. Le premier élément de broche a au moins une butée s'étendant vers l'extérieur depuis l'élément de tige, une première rainure prévue au-dessous du premier élément de broche, une seconde rainure prévue au-dessous de la première rainure, prévue autour de la circonférence de l'élément de tige, et un deuxième élément de broche ayant au moins une butée s'étendant depuis la deuxième rainure. Le connecteur de lame s'engage de manière solidaire avec l'élément de tige, permettant à la lame d'écarteur de fonctionner dans un mode rotatif et un mode verrouillé.
PCT/US2016/023409 2015-04-03 2016-03-21 Montage de lame d'écarteur WO2016160397A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2016/023409 WO2016160397A1 (fr) 2015-04-03 2016-03-21 Montage de lame d'écarteur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/678,444 2015-04-03
PCT/US2016/023409 WO2016160397A1 (fr) 2015-04-03 2016-03-21 Montage de lame d'écarteur

Publications (1)

Publication Number Publication Date
WO2016160397A1 true WO2016160397A1 (fr) 2016-10-06

Family

ID=57013638

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2016/023409 WO2016160397A1 (fr) 2015-04-03 2016-03-21 Montage de lame d'écarteur

Country Status (1)

Country Link
WO (1) WO2016160397A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5902233A (en) * 1996-12-13 1999-05-11 Thompson Surgical Instruments, Inc. Angling surgical retractor apparatus and method of retracting anatomy
US5984865A (en) * 1998-09-15 1999-11-16 Thompson Surgical Instruments, Inc. Surgical retractor having locking interchangeable blades
US6042540A (en) * 1997-08-18 2000-03-28 Pacific Surgical Innovations, Inc. Side-loading surgical retractor
US20030069478A1 (en) * 2001-10-05 2003-04-10 Burns Phillips Retractor blade connector head
US20100217089A1 (en) * 2009-02-24 2010-08-26 Thompson Surgical Instruments, Inc. Surgical Retractor with Locking Blade
US20110201897A1 (en) * 2009-10-21 2011-08-18 Rudolf Bertagnoli Retractor System for Anterior Cervical Spine Surgery
US20120088979A1 (en) * 2010-10-08 2012-04-12 K2M, Inc Lateral access system and method of use

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5902233A (en) * 1996-12-13 1999-05-11 Thompson Surgical Instruments, Inc. Angling surgical retractor apparatus and method of retracting anatomy
US6042540A (en) * 1997-08-18 2000-03-28 Pacific Surgical Innovations, Inc. Side-loading surgical retractor
US5984865A (en) * 1998-09-15 1999-11-16 Thompson Surgical Instruments, Inc. Surgical retractor having locking interchangeable blades
US20030069478A1 (en) * 2001-10-05 2003-04-10 Burns Phillips Retractor blade connector head
US20100217089A1 (en) * 2009-02-24 2010-08-26 Thompson Surgical Instruments, Inc. Surgical Retractor with Locking Blade
US20110201897A1 (en) * 2009-10-21 2011-08-18 Rudolf Bertagnoli Retractor System for Anterior Cervical Spine Surgery
US20120088979A1 (en) * 2010-10-08 2012-04-12 K2M, Inc Lateral access system and method of use

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