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WO2007068128A1 - Paire de pinces configurees pour l'ecartement de tissus mous - Google Patents

Paire de pinces configurees pour l'ecartement de tissus mous Download PDF

Info

Publication number
WO2007068128A1
WO2007068128A1 PCT/CH2005/000753 CH2005000753W WO2007068128A1 WO 2007068128 A1 WO2007068128 A1 WO 2007068128A1 CH 2005000753 W CH2005000753 W CH 2005000753W WO 2007068128 A1 WO2007068128 A1 WO 2007068128A1
Authority
WO
WIPO (PCT)
Prior art keywords
pair
soft tissue
tongs
blades
lever
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CH2005/000753
Other languages
English (en)
Inventor
Martin Kaufmann
Daniel Fluri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Synthes GmbH
Original Assignee
Synthes GmbH
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 Synthes GmbH filed Critical Synthes GmbH
Priority to PCT/CH2005/000753 priority Critical patent/WO2007068128A1/fr
Publication of WO2007068128A1 publication Critical patent/WO2007068128A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
    • A61B17/0206—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; 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
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B17/2909—Handles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/0046—Surgical instruments, devices or methods with a releasable handle; with handle and operating part separable
    • A61B2017/00464—Surgical instruments, devices or methods with a releasable handle; with handle and operating part separable for use with different instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A61B17/2812—Surgical forceps with a single pivotal connection
    • A61B17/2833—Locking means
    • A61B2017/2837—Locking means with a locking ratchet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A61B17/2812—Surgical forceps with a single pivotal connection
    • A61B17/2841—Handles
    • A61B2017/2845—Handles with a spring pushing the handle back

Definitions

  • the present invention relates to a pair of tongs apt for spreading soft tissue.
  • a surgical lamina spreader instrument for treatment of the spine is known from US 5,019,081 WATANABE.
  • This known spreader instrument comprises a ratcheting device to fasten the levers of the spreader instrument in a desired mutual position. Furthermore, a leaf spring is provided by means of which the two levers are spreaded when the ratcheting device is disengaged.
  • This known spreader instrument has the disadvantage that the ratcheting device must be operated with a second hand.
  • a pair of tongs with tissue-gripping pincer points that are held in their position relative to each other by means of a ratchet bar assembly is known from US 5,997,545 DOHERTY.
  • the ratchet bar assembly comprises a telescoping cross bar which moves against the restraining force of an extension spring to register the spreading force exerted on the pincer arms by the tissue under tension.
  • the disadvantage of these known tongs is that the surgeon needs one hand to move the handles of the tongs relative to each other and additionally needs a second hand to lock or unlock the ratchet bar assembly in order to fix the pincers in their gripping position.
  • the present invention is related to a pair of tongs apt for soft tissue spreading.
  • a first lever and a second lever are jointedly connected in a mutually rotatable manner by means of a swivel joint.
  • a locking mechanism is attached which connects the first and second lever and by means of which said first and second lever are reversibly fastenable in a desired mutual position.
  • Each of said first and second lever includes a handle portion directed towards the rear ends of the first and second levers such that said pair of tongs may be single- handedly grasped.
  • the locking mechanism is provided with a release button which is located at one of said first and second levers between the respective handle portion and the swivel joint such permitting an actuation of the release button with the same hand as the handle portions are being grasped.
  • the locking mechanism Upon actuating the release button the locking mechanism is brought in its disengaged position.
  • the pair of tongs according to the invention further comprises a resilient member by means of which said first and second levers are being resiliently spread apart when said locking mechanism is disengaged.
  • said locking mechanism comprises a retention means permitting to reversibly keep the release member in a position where said locking mechanism is permanently disengaged.
  • the resilient member may be configured as a compression or tension spring depending on the configuration of the first and second lever.
  • said first and second lever comprise a free end each being located oppositely to the handle portion. Furthermore, the free ends are provided with attachment means, e.g. a snap-fit by means of which a pair of soft tissue retracting blades is attachable to said free ends. This allows to mount different pairs of soft tissue retracting blades (e.g. different length, shape) in order to better adapt said pair of tongs to a particular use.
  • said attachment means comprise a detent portion configured to form a releasable fixation to a soft tissue retracting blade.
  • said locking mechanism comprises a toothed bar with a longitudinal axis, whereby a first end portion of said toothed bar is hingedly connected to one of said first and second levers while a second end portion of said toothed bar is connected to the release member in such way that the toothed bar may slide parallel to its longitudinal axis within the release member when the locking mechanism is in its disengaged position.
  • the assembly for spreading soft tissue essentially comprises a pair of tongs and a set of soft tissue retracting blades.
  • said set of soft tissue retracting blades comprises M > 2 pairs of soft tissue retracting blades each pair having a different length.
  • a set of trocars is included, each of said trocars being insertable between blades of a corresponding pair of soft tissue retracting blades.
  • the surgeon performs a stab incision at the body portion of a patient to be treated.
  • the operator selects a pair of soft tissue retraction blades being appropriate to the soft tissue and the surgical procedure to be performed and attaches the selected pair of soft tissue retraction blades to a pair of tongs.
  • the operator selects a trocar which is appropriate to the pair of soft tissue retraction blades and inserts the pair of soft tissue retraction blades together with the trocar into the stab incision by means of the pair of tongs untU the desired insertion depth is reached.
  • surgical devices e.g. bone screw through the opening between the soft tissue retraction blades
  • Fig. 1 shows a perspective view of an embodiment of the pair of tongs according to the present invention
  • Fig. 2 shows a magnified cross section along the line Il - Il in fig. 1 ;
  • Fig. 3 shows a perspective view of an assembly for soft tissue spreading according to one embodiment of the invention
  • Fig. 4 shows a perspective view of a further embodiment of the pair of tongs according to the invention.
  • Fig. 5 shows a cross-sectional view along the line III - Ml in Fig. 5.
  • the pair of tongs 1 shown in fig. 1 essentially comprises a first lever 2 and a second lever 3 being joined in a mutually rotatable manner by means of a swivel joint 10, said first and second lever 2;3 each having a handle portion 4;5 and oppositely arranged a free end 8;9 being provided with attachment means 17 by means of which soft tissue retracting blades 18 are attachable to said free ends 8;9 e.g. by means of a snap-fit.
  • a reversibly engageable locking mechanism 12 is provided by means of which said first and second lever 1 ;2 are reversibly fastenable in a desired mutual position.
  • the locking mechanism 12 includes a toothed bar 13 and a release member 14 with a transverse opening 24 (fig. 2) formed as a leadthrough for the toothed bar 13, the wall of said transverse opening 24 having serrations 22 (fig. 2) which are in engagement with the toothed bar 13 when said locking mechanism 12 is in its engaged position.
  • the first end portion 15 of the toothed bar 13 is connected to the first lever 2 by means of a hinge joint 21 having a rotation axis perpendicular to a plane defined by the first and second lever 2;3.
  • the second end 16 of the toothed bar 13 penetrates the second lever 3 such that the longitudinal axis 11 of the toothed bar 13 extends between the swivel joint 10 and the handle portions 4;5 of the first and second lever 2;3.
  • the release member 14 is configured as a flush type push-button which is integrated in the second lever 3.
  • the resilient member 7 is configured as a helical compression spring apt to spread said first and second lever 2;3 when said locking mechanism 12 is in a disengaged position.
  • the locking mechanism 12 is illustrated in more detail in Fig. 2.
  • a pocket hole 32 penetrates into the second lever 3, whereby the longitudinal axis 31 of the pocket hole 32 is parallel to the swivelling axis 6 of the swivel joint 10 (fig. 1).
  • the release member 14 which is configured as a flush type push-button is inserted in the pocket hole 32 and has a longitudinal transverse opening 24 apt as a leadthrough for the toothed bar 13, whereby the long axis of said longitudinal transverse opening 24 extends parallel to the longitudinal axis of the pocket hole 32.
  • the wall of said transverse opening 24 is provided with serrations 22 at a portion of its periphery towards the front end 33 of the release member 14, whereby said serrations 22 engage the corresponding teeth 25 of the toothed bar 13 when the locking mechanism 12 is in the engaged position, i.e. when the release member 14 is not pressed down.
  • the opposite peripheral portion of the wall of the transverse opening 24 is smooth such that upon pressing the release member 14 down, i.e.
  • the serrations 22 disengage from the teeth 25 of the toothed bar 13 and the locking mechanism 12 is put in its disengaged position such that the toothed bar 13 may slide parallel to its longitudinal axis 11 through the transverse opening 24 in the release member 14 as well as through the transverse bore 23 in the second lever 3.
  • a compression spring 36 coaxially disposed in a recess 34 at the front end 33 of the release member 14 and abutting the bottom 35 of the pocket hole 32 the release member 14 is pushed into the position in which the serrations 22 engage the teeth 25 of the toothed bar 13.
  • the serrations 22 as well as the teeth 25 are asymmetrically configured, i.e.
  • This configuration of the flanks of to the serrations 22 and of the teeth 25 permit a relative displacement of the first and second lever 2;3 towards each other without the need of disengaging the locking mechanism 12.
  • FIG. 3 illustrates a device for soft tissue spreading comprising one embodiment of the pair of tongs 1 , a set of soft tissue retracting blades 18 (drawing shows only blades for one lever) and a set of trocars 19.
  • the set of soft tissue retracting blades 18 essentially comprises blades 18 with different blade lengths I each being provided with second attachment means forming e.g. as a snap-fit together with the corresponding attachment means 17 at the free ends 8;9 of the first and second lever (fig. 1).
  • the soft tissue retracting blades 17 each comprise a flared flange 37 at their free ends 42, said flared flange 37 permitting a self-fixation of the retracting blades 17 in the soft tissue.
  • the retracting blades 17 have a contour of a circular arc when viewed parallel to the swivelling axis 6 of the swivel joint 10 of the pair of tongs 1 , whereby the central angle of the circular arc is smaller than 180° such that the retracting blades 17 form an oval when tightly pressed against each other.
  • a trocar 19 is selected from a set of trocars with different lengths and inserted between the retracting blades 17. After insertion of the retracting blades 17 into the soft tissue the pair of tongs 1 is spreaded and the trocar 19 removed.
  • the tip 38 of the trocar 19 is cone like such that the retracting blades 17 abut the rear end 39 of the tip 38 such allowing the soft tissue to be protected against injuries through the retracting blades 17 during insertion of the device.
  • Fig. 4 illustrates an embodiment of the pair of tongs 1 which differs from the embodiment shown in fig. 1 only therein that the release member 14 is disposed in a separate casing 40 which is connected to the second lever 3. Such the toothed bar 13 does not penetrate the second lever 3. Furthermore, the locking mechanism 12 is provided with a retention means 20 (fig. 5) which permits to keep said release member 14 in a position where the locking mechanism 12 is disengaged.
  • the retention means 20 comprises a first and a second transverse opening 24';24" which are orthogonally arranged whereby the first transverse opening 24' is coaxial to the first transverse axis 27 of the release member 14 while the second transverse opening 24" is coaxial to the second transverse axis 26 of the release member 14.
  • the first transverse opening 24' is provided with serrations 22 apt to engage the teeth 25 of the toothed bar 13 while the second transverse opening 24" is circular cylindrical.
  • two diametrally located apertures 41 are provided, each having a cross section of a quadrant viewed parallel to the swivelling axis 6 (fig. 1).
  • the release member 14 is rotatable about an axis parallel to the swivelling axis 6 (fig. 1) such allowing a reversible permanent disengagement of the locking mechanism 12 in a position of the release member 14 (as shown in fig. 5) and a rotation of the release member 14 in the direction as indicated by arrow Z until the serrations 22 in the first transverse opening 24' engage the teeth 25 of the toothed bar 13.

Landscapes

  • 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

Paire de pinces (1) configurées pour l'écartement de tissus mous et comportant : A) un premier levier (2) et un deuxième levier (3) joints de manière à pivoter l'un par rapport à l'autre au moyen d'un joint pivotant (10) ; B) un mécanisme (12) de verrouillage susceptible d'être enclenché de façon réversible, au moyen duquel lesdits premier et deuxième leviers (2, 3) peuvent être fixés de façon réversible dans une position relative souhaitée ; caractérisée en ce que C) lesdits premier et deuxième leviers (1, 2) comprennent chacun une partie (4, 5) poignée au moyen de laquelle ladite paire de pinces (1) peut être saisie d'une main ; D) ledit mécanisme (12) de verrouillage comprenant un organe (14) de relâchement au moyen duquel ledit mécanisme (12) de verrouillage peut être désenclenché et qui est disposé au niveau d'un desdits premier et deuxième leviers (2, 3) entre la partie (4, 5) poignée et ladite articulation pivotante (10) correspondantes; et E) un organe (7) élastique apte à écarter lesdits premier et deuxième leviers (2, 3) lorsque ledit mécanisme (12) de verrouillage est en position désenclenché.
PCT/CH2005/000753 2005-12-15 2005-12-15 Paire de pinces configurees pour l'ecartement de tissus mous Ceased WO2007068128A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CH2005/000753 WO2007068128A1 (fr) 2005-12-15 2005-12-15 Paire de pinces configurees pour l'ecartement de tissus mous

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2005/000753 WO2007068128A1 (fr) 2005-12-15 2005-12-15 Paire de pinces configurees pour l'ecartement de tissus mous

Publications (1)

Publication Number Publication Date
WO2007068128A1 true WO2007068128A1 (fr) 2007-06-21

Family

ID=36660677

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2005/000753 Ceased WO2007068128A1 (fr) 2005-12-15 2005-12-15 Paire de pinces configurees pour l'ecartement de tissus mous

Country Status (1)

Country Link
WO (1) WO2007068128A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009022887A2 (fr) 2007-08-10 2009-02-19 Girius Antanaitis Ecarteur chirurgical
US20120232351A1 (en) * 2009-11-02 2012-09-13 Ehud Assia Iris retractor
CN104161565A (zh) * 2014-06-27 2014-11-26 张家港市海鑫五金制品有限公司 一种用于重病手术的手术钳
US20150065809A1 (en) * 2009-11-02 2015-03-05 Apx Ophthalmology Ltd. Iris retractor
CN108451629A (zh) * 2018-04-19 2018-08-28 苏州欣荣博尔特医疗器械有限公司 自锁式复位钳

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1506032A (en) * 1921-08-15 1924-08-26 Joseph L Stevens Surgical instrument
DE2951664A1 (de) * 1979-12-21 1981-07-02 Max Bernhard 7900 Ulm Ulrich Aerztliches instrument mit zwei im abstand gegeneinander verstellbaren instrumentenarmen
US5019081A (en) 1986-12-10 1991-05-28 Watanabe Robert S Laminectomy surgical process
US5997545A (en) 1998-11-06 1999-12-07 Johnson & Johnson Professional, Inc. Knee incision tensile gauge
US6309349B1 (en) * 1996-04-10 2001-10-30 Endoscopic Technologies, Inc. Surgical retractor and stabilizing device and method for use
WO2004024005A1 (fr) * 2002-09-11 2004-03-25 Nuvasive, Inc. Systemes et procedes servant a extraire un tissu corporel
US20050177173A1 (en) * 1998-10-02 2005-08-11 Max Aebi Spinal disc space distractor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1506032A (en) * 1921-08-15 1924-08-26 Joseph L Stevens Surgical instrument
DE2951664A1 (de) * 1979-12-21 1981-07-02 Max Bernhard 7900 Ulm Ulrich Aerztliches instrument mit zwei im abstand gegeneinander verstellbaren instrumentenarmen
US5019081A (en) 1986-12-10 1991-05-28 Watanabe Robert S Laminectomy surgical process
US6309349B1 (en) * 1996-04-10 2001-10-30 Endoscopic Technologies, Inc. Surgical retractor and stabilizing device and method for use
US20050177173A1 (en) * 1998-10-02 2005-08-11 Max Aebi Spinal disc space distractor
US5997545A (en) 1998-11-06 1999-12-07 Johnson & Johnson Professional, Inc. Knee incision tensile gauge
WO2004024005A1 (fr) * 2002-09-11 2004-03-25 Nuvasive, Inc. Systemes et procedes servant a extraire un tissu corporel

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009022887A2 (fr) 2007-08-10 2009-02-19 Girius Antanaitis Ecarteur chirurgical
WO2009022887A3 (fr) * 2007-08-10 2009-05-22 Girius Antanaitis Ecarteur chirurgical
US8562522B2 (en) 2007-08-10 2013-10-22 Girius Antanaitis Surgical retractor
US20120232351A1 (en) * 2009-11-02 2012-09-13 Ehud Assia Iris retractor
US20150065809A1 (en) * 2009-11-02 2015-03-05 Apx Ophthalmology Ltd. Iris retractor
US9610072B2 (en) * 2009-11-02 2017-04-04 Apx Opthalmology Ltd. Iris retractor
US9788824B2 (en) * 2009-11-02 2017-10-17 Apx Opthalmology Ltd. Iris retraction method
US10045767B2 (en) 2009-11-02 2018-08-14 Apx Opthalmology Ltd. Iris retractor
CN104161565A (zh) * 2014-06-27 2014-11-26 张家港市海鑫五金制品有限公司 一种用于重病手术的手术钳
CN108451629A (zh) * 2018-04-19 2018-08-28 苏州欣荣博尔特医疗器械有限公司 自锁式复位钳

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