WO2017157442A1 - Pince à os médicale - Google Patents

Pince à os médicale Download PDF

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Publication number
WO2017157442A1
WO2017157442A1 PCT/EP2016/055757 EP2016055757W WO2017157442A1 WO 2017157442 A1 WO2017157442 A1 WO 2017157442A1 EP 2016055757 W EP2016055757 W EP 2016055757W WO 2017157442 A1 WO2017157442 A1 WO 2017157442A1
Authority
WO
WIPO (PCT)
Prior art keywords
bone
lever
bone clamp
profile
clamp
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/EP2016/055757
Other languages
English (en)
Inventor
Julia Maier
Laura SCHOLZE
Rupert Heigl
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.)
Brainlab SE
Original Assignee
Brainlab SE
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 Brainlab SE filed Critical Brainlab SE
Priority to PCT/EP2016/055757 priority Critical patent/WO2017157442A1/fr
Priority to EP16775515.6A priority patent/EP3247297B1/fr
Priority to PCT/EP2016/072197 priority patent/WO2017157485A1/fr
Priority to US15/522,685 priority patent/US10231759B2/en
Publication of WO2017157442A1 publication Critical patent/WO2017157442A1/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
    • A61B17/56—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 or setting implements
    • 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, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7047—Clamps comprising opposed elements which grasp one vertebra between them
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8866—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices for gripping or pushing bones, e.g. approximators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A61B2017/00407—Ratchet means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3904—Markers, e.g. radio-opaque or breast lesions markers specially adapted for marking specified tissue
    • A61B2090/3916—Bone tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3983—Reference marker arrangements for use with image guided surgery

Definitions

  • the present invention relates to a bone clamp for being attached to a bone.
  • Bone clamps in particular specialized spine clamps or spinal clamps, are often used in the medical field.
  • a typical application is a fixation of the bone to which the clamp is attached.
  • Another typical application is using the bone clamp as a mechanical interface for attaching an object, such as a marker device, to the bone.
  • the advantage of a clamp over other types of fixation units is that damage to the bone is minimized, in particular compared to devices which require one or more screws to be screwed into the bone.
  • Known bone clamps have a screw mechanism for fixing the bone clamp to the bone.
  • a bone clamp for being attached to a bone comprises two levers which are connected via a pivot joint in a scissor-like manner.
  • Each lever has a first lever arm from a first end of the respective lever to the pivot joint and a second lever arm from a second end of the respective lever to the pivot joint.
  • the second end of a lever is opposite to the first end of the lever.
  • the first end is to get in contact with the bone. This means that the bone is clamped between the two first ends of the two levers.
  • the first end of a lever is not limited to the very end of the lever, but also comprises a portion extending towards the pivot joint.
  • the two levers being connected in a scissor-like manner means that the two levers basically form an X. If the two second ends of the two levers are moved towards each other, the pivot joint also causes the first end of the two levers to move towards each other.
  • the pivot joint is a joint which enables a relative rotation between the two levers about an axis which is also referred to as pivot axis or joint axis.
  • the lengths of the second lever arms are equal to or less than two times the lengths of the corresponding first arms. In other words, the distance between the very end of a second lever arm of a lever to the pivot joint is at most twice the distance between the very end of the first lever arm of the same lever to the pivot joint.
  • the lengths of the second lever arms are less than 1.5 times or 1 .2 times the lengths of the corresponding first lever arms. In another example, the lengths of the second lever arms are even less than the lengths of the corresponding first lever arms.
  • the bone clamp according to the present invention further comprises a ratchet mechanism provided at the second lever arms, wherein the ratchet mechanism comprises a profile at each of the second lever arms and the profiles are adapted to engage with each other when the bone clamp is closed.
  • the profiles engaging with each other means that the profiles prevent the bone clamp from opening and thus from detaching from the bone.
  • ratchet mechanism instead of a screw mechanism, the time and efforts for applying the bone clamp can be significantly reduced. Operating a screw mechanism can also be more difficult, in particular in scenarios with limited working space. In addition, a screw mechanism is typically heavier and larger than a ratchet mechanism.
  • the profiles are tooth profiles, each comprising a plurality of teeth. The closer the two second ends of the two lever arms are, the more teeth of the two profiles engage with each other.
  • each tooth of a profile extends linearly in a plane which is perpendicular to the axis of the pivot joint.
  • the prolongations of all teeth of a profile intersect at a vanishing point. This vanishing point is a virtual point, since the actual extent of a tooth is limited.
  • each tooth extends radially along a line which passes through the vanishing point.
  • the teeth of a profile are not exactly parallel.
  • the vanishing point has a non-zero distance to the axis of the pivot joint. With such a non-zero distance, which is defined for a state in which the levers are not deformed, for example when the bone clamp is not attached to a bone, a deformation of the levers during the application of the bone clamp can be compensated.
  • the two levers rotate relative to each other about the pivot joint until the first ends of the levers contact the bone.
  • the non-zero distance of the vanishing point to the axis of the pivot joint is selected such that the deformation of the second lever arm during the application shifts the vanishing point such that it lies or in the proximity of the axis of the pivot joint when the bone clamp is closed.
  • the teeth of the profile are then aligned with the axis of the pivot joint, such that the two profiles securely engage with each other.
  • the non-zero distance is adjustable, for example by a mechanism for adjusting an angle between the profile and the corresponding second lever arm.
  • the bone clamp can thus be adapted to different bone dimensions.
  • each tooth of a profile extends linearly in a plane which is perpendicular to the axis of the pivot joint, but the teeth are parallel to each other.
  • the profile of at least one lever is rotatable relative to the lever about an axis parallel to the axis of the pivot joint. The other profile then aligns the rotatable profile relative to the lever such the profile securely engage with each other.
  • the profile of at least one lever is moveable relative to the lever.
  • the word "moveable" means a translational shift. If the bone clamp is opened in order to detach it from the bone, the moveable profile is dragged by the other profile and does therefore not hinder the process of opening the bone clamp.
  • the relative movement of the profile has a tangential component with respect to a rotation of the lever about the pivot joint.
  • the other profile can thus pull the moveable profile away from its lever. This facilitates the process of opening the bone clamp.
  • the relative movement of the profile is curved on a circular arc, for example centered about the axis of the pivot joint.
  • a curved movement of the profile has the advantage that there is no relative movement between the profiles in a direction perpendicular to the axis of the pivot joint.
  • the relative movement occurs in a plane which is orthogonal to the axis of the pivot joint.
  • the relative movement of the profile has a linear component in the direction of the axis of the pivot joint.
  • the relative movement of the profile can have components in at least two different directions, in one example, the trajectory of the movement of the profile relative to its lever can have the shape of at least a part of a helix, wherein the longitudinal axis of the helix is preferably parallel to the axis of the pivot joint.
  • the moveable profile automatically disengages from the other profile, thus facilitating the process of opening the bone clamp.
  • the bone clamp for example comprises a guidance structure which guides the movement of the profile relative to the lever.
  • This guidance structure for example comprises a surface on which the profile can glide relative to the lever.
  • the bone clamp further comprises a releasable locking mechanism for the moveable profile.
  • the locking mechanism is locked while the bone clamp is attached to the bone and / or in the process of being attached to the bone, and is released for detaching the bone clamp from the bone.
  • the locking mechanism hinders or even prevents the relative movement between the profile and the lever.
  • the locking mechanism comprises a release lever. In one position of the release lever, the locking mechanism is locked, and in another position of the release lever, the locking mechanism is released.
  • the release lever is coupled to the profile. This means that a movement of the profile relative to the lever translates into a movement of the release lever and vice versa. With this configuration, the relative movement between the profile and the lever can be controlled via the release lever, such that an operator of the bone clamp can control the process of opening the bone clamp.
  • the two profiles form an undercut. This strengthens the engagement of the profiles and prevents an unintended release of the bone clamp.
  • the bone clamp further comprises at least one bone pin on a first lever arm.
  • a bone pin is a component, like a cone, which is pushed against and/or into the bone in order to improve the contact between the clamp and the bone.
  • the bone pins may be located at or close to the first end of a lever. So if a first end of a lever contacts the bone, this may mean that a bone pin contacts the bone and optionally subsequently penetrates the bone.
  • the bone clamp further comprises a mechanical interface for attaching a marker device to the bone clamp.
  • the bone clamp can thus be used for attaching a marker to the bone, for example for tracking the bone with a medical tracking system or medical navigation system.
  • the present invention further relates to a bone clamp system comprising a bone clamp as described herein and an applicator tool for attaching the bone clamp to a bone. Due to the limited length of the second lever arm compared to the first lever arm, it might be difficult to apply the force or moment which is required to attach and tighten the bone clamp. This required force or moment can be applied by use of the applicator.
  • the applicator can thus be understood as acting like pliers.
  • the applicator tool indicates the force or moment it applies to the bone clamp.
  • a force sensor which indicates the force or a moment sensor which indicates the moment via an indication instrument and / or transmits the force or moment to an external display system, such as a medical tracking system or a medical navigation system.
  • a force indicator or moment indicator indicates a deformation of the applicator tool which corresponds to the force or moment applied to the bone clamp.
  • the lever can include a scale on one side of the incision and a pointer on the opposite side of the incision, such that the pointer indicates the applied force or moment on the scale.
  • the applicator tool comprises a force limiting mechanism which limits the force or a moment limiting mechanism which limits the moment that can be applied to the bone clamp by the applicator tool.
  • the force limiting mechanism, the moment limiting mechanism and / or the infeed limiting mechanism prevent a maloperation of the applicator tool which could result in damage of the bone to which the bone clamp is being attached.
  • a marker detection device for example, a camera or an ultrasound receiver or analytical devices such as CT or MRI devices
  • the detection device is for example part of a navigation system.
  • the markers can be active markers.
  • An active marker can for example emit electromagnetic radiation and/or waves which can be in the infrared, visible and/or ultraviolet spectral range.
  • a marker can also however be passive, i.e. can for example reflect electromagnetic radiation in the infrared, visible and/or ultraviolet spectral range or can block x-ray radiation.
  • the marker can be provided with a surface which has corresponding reflective properties or can be made of metal in order to block the x-ray radiation. It is also possible for a marker to reflect and/or emit electromagnetic radiation and/or waves in the radio frequency range or at ultrasound wavelengths.
  • a marker preferably has a spherical and/or spheroid shape and can therefore be referred to as a marker sphere; markers can however also exhibit a cornered, for example cubic, shape.
  • a marker device can for example be a reference star or a pointer or a single marker or a plurality of (individual) markers which are then preferably in a predetermined spatial relationship.
  • a marker device comprises one, two, three or more markers, wherein two or more such markers are in a predetermined spatial relationship. This predetermined spatial relationship is for example known to a navigation system and is for example stored in a computer of the navigation system.
  • a marker device comprises an optical pattern, for example on a two-dimensional surface.
  • the optical pattern might comprise a plurality of geometric shapes like circles, rectangles and/or triangles.
  • the optical pattern can be identified in an image captured by a camera, and the position of the marker device relative to the camera can be determined from the size of the pattern in the image, the orientation of the pattern in the image and the distortion of the pattern in the image. This allows to determine the relative position in up to three rotational dimensions and up to three translational dimensions from a single two-dimensional image.
  • Figure 2 a bone clamp with contact surfaces for an applicator tool
  • Figure 3 an applicator tool for the bone clamp of Figure 2;
  • Figure 4 vanishing points of profiles of a bone clamp
  • Figure 5 the vanishing points of Figure 4 for a tightened bone clamp
  • FIG. 7 the bone clamp of Figure 6 with the locking mechanism being released
  • FIG. 1 shows a bone clamp 1 according to the present invention in an open state.
  • the bone clamp 1 comprises two levers 2 and 3 which are connected via a pivot joint 7 in a scissor-like manner. This means that the two levers 2 and 3 can rotate relative to each other about the pivot joint 7.
  • the axis of the pivot joint 7 about which the two levers 2 and 3 rotate relative to each other is orthogonal to the drawing plane. The location of this axis, which is also referred to as pivot axis or joint axis, is in the center of the pivot joint 7.
  • the lever 2 has a first lever arm 2a from a first end of the lever 2 to the pivot joint 7, in particular to the center of the pivot joint 7, and a second lever arm 2b from a second end of the lever 2 to the pivot joint 7, in particular the center of the pivot joint 7.
  • the lever 3 has a first lever arm 3a from a first end of the lever 3 to the pivot joint 7, in particular the center of the pivot joint 7, and a second lever arm 3b from a second end of the lever 3 to the pivot joint 7, in particular the center of the pivot joint 7.
  • the first end and the second end of a lever 2 or 3 are at different ends of the respective lever 2 or 3.
  • the first ends of the levers 2 and 3 are the lower ends and the second ends are the upper ends.
  • the first lever 2 has a tooth profile 4.
  • the lever 3 has a tooth profile 5.
  • the tooth profiles 4 and 5 engage with each other such that an automatic opening of the bone clamp 1 is prevented.
  • the second ends of the levers 2 and 3 move towards each other, such that the tooth profiles 4 and 5 glide over each other. The tighter the bone clamp 1 is closed, the further the two profiles 4 and 5 overlap.
  • the first lever arms 2a and 3a each have a length L1 and the second lever arms 2b and 3b each have a length L2.
  • L2 / L1 ⁇ _2 for example L2 / L1 ⁇ _1.5, L2 / L1 ⁇ 1.2 or even L2 / L1 ⁇ 1.
  • the levers 2 and 3 each have a plurality of bone pins 6 which are to get in contact with a bone in order to prevent a relative motion between the bone clamp 1 and the bone once the bone clamp 1 is attached to the bone.
  • the bone clamp 1 in this exemplary embodiment is a spinal clamp. It has a clamping width, which represents the largest size of a bone to which it can be attached, of 0mm to 20mm.
  • the arm length L1 +L2 is between 70mm and 100mm, and the maximum clamping force exerted on the bone is 400N.
  • the tooth profiles 4 and 5 are designed such that the steps in which the clamping force can be adjusted is 50N wide or less.
  • Figure 2 schematically shows the bone clamp 1 of Figure 1 with additional functional surfaces 8 and 9 at the second ends of the levers 2 and 3, respectively.
  • the functional surfaces 8 and 9 are contact surfaces for contact with an applicator tool which can be used for applying the bone clamp 1 to a bone.
  • the functional surfaces 8 and 9 are protrusions which protrude from the second ends of the levers 2 and 3, respectively, basically in the direction of the joint axis of the pivot joint 7.
  • Figure 3 shows an applicator tool 10 for use with the bone clamp 1 shown in Figure 2.
  • the applicator tool 10 can be understood as pliers for exerting a force or a moment on the second ends of the levers 2 and 3.
  • the applicator tool 10 has long arms for being operated by a user and short arms carrying functional surfaces 1 for interacting with the functional surfaces 8 and 9 of the levers 2 and 3, respectively.
  • the functional surfaces 8, 9 and 11 can for example be hemispheric, but can have other shapes, such as shapes which result in a form fit between the functional surfaces. This form fit might allow only one relative orientation between the applicator tool 10 and the bone clamp 1.
  • Figure 4 shows the bone clamp 1 of Figure 1 with a modified lever arm 2.
  • the tooth profile 4 shown in Figure 4 is moveable relative to the lever 2.
  • the bone clamp 1 of Figure 4 further has a locking mechanism which locks the movement of the tooth profile 4 relative to the lever 2.
  • the locking mechanism includes a release lever 12. In the position of the release lever 12 as shown in Figure 4, the movement of the tooth profile 4 relative to the lever 2 is blocked. This blocking can be released by turning the release lever 12 counter-clockwise.
  • the teeth of the tooth profiles 4 and 5 are not parallel, but fall in line at vanishing points V1 and V2, respectively. This has the effect that the tooth profiles 4 and 5 securely engage with each other, even if they approach each other on a curved path rather than on a straight path.
  • the vanishing points V1 and V2 have a non- zero distance from the joint axis of the pivot joint 7.
  • the bone clamp 1 When the bone clamp 1 is being attached to a bone, first the first ends of the levers 2 and 3 contact the bone. If a further force or moment is applied to the second ends of the levers 2 and 3, the bone hinders that the first ends of the levers 2 and 3 further approach each other, such that this further applied force or moment rather leads to a deformation of the second lever arms 2b and 3b. Due to this deformation, the vanishing points V1 and V2 are shifted towards the joint axis of the pivot joint 7.
  • the vanishing points V1 and V2 preferably lie near or on the joint axis of the pivot joint 7. This state is shown in Figure 5.
  • the closed bone clamp 1 is shown without a bone, such that the first ends of the levers 2 and 3 contact each other.
  • the non-zero distance of the vanishing points V1 and V2 from the joint axis of the pivot joint 7 can be adapted to the size of the bone to which the bone clamp 1 is to be attached.
  • the deformation of the second lever arms 2b and 3b when the tooth profiles 4 and 5 fully overlap as shown in Figure 5 depends on the size of the bone to which the bone clamp 1 is to be attached.
  • Figure 6 shows the illustration of Figure 5, wherein the lever 3 is only indicated by a dashed line, such that the tooth profile 4 of the lever 2 and the release lever 12 can be seen.
  • the deformed second lever arms 2b and 3b act as springs which urge the second ends of the levers 2 and 3 to move away from each other.
  • the arrow in Figure 6 indicates the direction into which the tooth profile 5 of the lever 3 would pull the tooth profile 4 of the lever 2.
  • a movement of the tooth profile 4 relative to the lever 2 is prevented by the release lever 12.
  • the release lever 12 is opened and thus releases the tooth profile 4.
  • Figure 8 shows an implementation in which the tooth profile 4 slides along a slanted guidance surface 13, which has a non-zero angle with a plane perpendicular to the joint axis of the pivot joint 7.
  • the tooth profile 5 of the lever 3 does not only pull the tooth profile 4 to the right, but also causes a movement in a direction parallel to the joint axis of the pivot joint 7.
  • This implementation has the additional advantage that the bone clamp 1 cannot be locked in its closed state if the release lever 12 is in a release position. In this case, the tooth profiles 4 and 5 cannot engage with each other, such that the bone clamp 1 does not remain closed automatically.
  • the lever 2 can comprise a guidance structure, such as at least one guidance rail, which restricts the movement of the tooth profile 4 to a gliding movement on the surface 13.
  • a guidance structure such as at least one guidance rail, which restricts the movement of the tooth profile 4 to a gliding movement on the surface 13.
  • the tooth profile 4 is moved relative to the lever 2 only by the tooth profile 5 once the release lever 12 is opened.
  • Figure 9 shows an alternative implementation in which the release lever 12 is coupled to the tooth profile 4. This means that the position of the release lever 12 corresponds to the position of the tooth profile 4 relative to the lever 2. With this configuration, a user of the bone clamp 1 can manually control the process of opening the bone clamp 1.
  • release lever 12 in Figures 8 and 9 is rotated by 90 degrees compared to Figure 4 to 7. This is for illustrative purposes only in order to clearly depict the function of the release lever 12.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (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)
  • Neurology (AREA)
  • Pathology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne une pince à os destinée à être fixée sur un os, comprenant deux leviers qui sont reliés par l'intermédiaire d'une articulation pivotante à la manière de ciseaux, chaque levier étant doté d'un premier bras de levier d'une première extrémité du levier respectif à l'articulation pivotante et d'un second bras de levier d'une seconde extrémité du levier respectif opposée à la première extrémité à l'articulation pivotante, la première extrémité est destinée à être en contact avec l'os et les longueurs des seconds bras de levier sont égales ou inférieures à deux fois les longueurs des premiers bras correspondants, la pince à os comprenant en outre un mécanisme à cliquet présent sur chacun des seconds bras de levier, le mécanisme à cliquet comprenant un profil sur chacun des seconds bras de levier. Les profils sont adaptés pour venir en prise l'un avec l'autre lorsque la pince à os est fermée.
PCT/EP2016/055757 2016-03-17 2016-03-17 Pince à os médicale Ceased WO2017157442A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/EP2016/055757 WO2017157442A1 (fr) 2016-03-17 2016-03-17 Pince à os médicale
EP16775515.6A EP3247297B1 (fr) 2016-03-17 2016-09-19 Pince à os
PCT/EP2016/072197 WO2017157485A1 (fr) 2016-03-17 2016-09-19 Pince à os
US15/522,685 US10231759B2 (en) 2016-03-17 2016-09-19 Bone clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2016/055757 WO2017157442A1 (fr) 2016-03-17 2016-03-17 Pince à os médicale

Publications (1)

Publication Number Publication Date
WO2017157442A1 true WO2017157442A1 (fr) 2017-09-21

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PCT/EP2016/055757 Ceased WO2017157442A1 (fr) 2016-03-17 2016-03-17 Pince à os médicale

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112370144A (zh) * 2020-10-13 2021-02-19 皖南医学院第一附属医院（皖南医学院弋矶山医院） 一种骨科固定钳
WO2024187245A1 (fr) * 2023-03-16 2024-09-19 Viortec Pty Ltd Clamp chirurgical

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475544A (en) * 1982-02-23 1984-10-09 Reis Norman I Bone gripping forceps
US4944739A (en) * 1989-03-24 1990-07-31 Torre Randall J Bone gripping fixation clamp
EP1044653A2 (fr) * 1999-04-12 2000-10-18 Accurate Surgical & Scientific Instruments Corporation Clamp pour compression dynamique et non-dynamique des fractures osseuses
GB2490220A (en) * 2011-04-19 2012-10-24 Biomet Mfg Corp Patient-specific fracture fixation instrument
WO2013191819A1 (fr) * 2012-06-20 2013-12-27 DePuy Synthes Products, LLC Pince de réduction osseuse utilisable sur tissus mous

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475544A (en) * 1982-02-23 1984-10-09 Reis Norman I Bone gripping forceps
US4944739A (en) * 1989-03-24 1990-07-31 Torre Randall J Bone gripping fixation clamp
EP1044653A2 (fr) * 1999-04-12 2000-10-18 Accurate Surgical & Scientific Instruments Corporation Clamp pour compression dynamique et non-dynamique des fractures osseuses
GB2490220A (en) * 2011-04-19 2012-10-24 Biomet Mfg Corp Patient-specific fracture fixation instrument
WO2013191819A1 (fr) * 2012-06-20 2013-12-27 DePuy Synthes Products, LLC Pince de réduction osseuse utilisable sur tissus mous

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112370144A (zh) * 2020-10-13 2021-02-19 皖南医学院第一附属医院（皖南医学院弋矶山医院） 一种骨科固定钳
CN112370144B (zh) * 2020-10-13 2021-11-19 皖南医学院第一附属医院（皖南医学院弋矶山医院） 一种骨科固定钳
WO2024187245A1 (fr) * 2023-03-16 2024-09-19 Viortec Pty Ltd Clamp chirurgical

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