Aesculap Ag

Franz-Peter Firmbach

Roland-Alois Högerle

Svenja Anhorn

Martin Nonnenmann

Michael Utz

Berna Richter

Roland Boettiger

William Mihalko

Housseyn Zouaghi

Lilli Stoffels

Jana Bork

Roland BÖTTIGER

Svenja Anhorm

An alignment device for a tibial resection guide includes a clamping device having at least two clamping elements acting against one another for clamping the distal end of a tibia of a patient. A contact device for contacting the proximal end of the tibia includes a tool guiding device for guiding a tool during the resection of the tibia. A telescopic device is separably connected to the contact device and adjustably connected to the clamping device. The telescopic device is designed to align the contact device and clamping device with respect to the tibia. The telescopic device has a decoupling device configured to separate the contact device from the telescopic device when activated. The clamping elements are designed such that the telescopic device can be removed from the tibia with one hand after the decoupling device is activated.

Alignment device for a tibial resection guide

A surgical instrument for use in a knee-replacement operation includes a main body configured for releasable fastening on a tibia-cutting block for guiding cutting on a proximal tibia. A first stylus and a second stylus are each mounted on the main body so as to be movable relative to the main body. The first and second styluses each extend along a longitudinal axis between a first end and a second end. The first ends are each designed to make contact with a tibial plateau of the tibia. The first stylus is mounted on the main body so as to be pivotable about a first pivot axis relative to the main body and the second stylus. The second stylus is mounted on the main body so as to be pivotable about a second pivot axis relative to the main body and the first stylus.

Surgical instrument

A modular instrument system for use in a knee joint replacement operation includes a tibial component, a first femoral component, a second femoral component and at least one spacer element. The different components of the modular instrument system are releasably connectable to one another to form different instrument configurations.

Modular instrument system for use in a knee joint replacement operation

A surgical instrument and system for use in a knee joint replacement operation. The instrument has a main body fastenable to a tibial cutting block. A first stylus and second stylus are each mounted on and movable relative to the main body, and are elongate between a first end and a second end. The first ends each have a reference surface for contacting a tibial plateau of the tibia. A compensation element is attachable to one of the styluses and has a plug-in section and a contact surface. The first ends each have a complementary plug-in section configured for releasable connection to the plug-in section. The contact surface is configured—when the compensation element is attached to the respective stylus—for contacting the tibial plateau instead of the respective reference surface and is spaced apart from the respective reference surface by a thickness dimension.

A surgical instrument for use in a knee joint replacement operation having a first fastening device, a second fastening device, a guiding device connected at one end to the first fastening device and at the other end to the second fastening device and by which the second fastening device is pivotably movable in a manner guided relative to the first fastening device in a sagittal guiding plane, and an alignment rod configured for alignment with respect to an anterior edge of a tibia. The alignment rod is releasably connected to the second fastening device in a rigid manner.

Surgical instrument and surgical instrument system

A surgical instrument includes a cutting block with a rear face configured to bear on a distal end face of a resected femur. The cutting block has a guide slot extending from the rear face to a front face. The guide slot is configured to receive and guide a saw blade. A reference foot is mountable on a lower face of the cutting block, and has an anteriorly oriented foot upper face that, in a mounted state of the reference foot, protrudes beyond the rear face and is configured to bear on posterior condyles of the femur. A probe is mountable on the cutting block, in a region of a block upper face lying opposite the block lower face, and has a probe tip which, in a mounted state of the probe, protrudes beyond the rear face and is configured to bear on an anterior face of the femur.

A surgical instrument and surgical instrument system for use in a knee replacement operation. The surgical instrument includes a fastening device configured for direct or indirect releasable fastening to a cutting block for the distal resection of a femur, a sensing device with a posteriorly oriented reference plane configured to bear against an anterior surface of the femur, and a bearing device for positioning the reference plane. The bearing device includes at least one pivoting bearing with an anteroposteriorly oriented pivot axis, about which the reference plane can be moved pivotably relative to the fastening device.

A surgical instrument for use in knee joint replacement surgery includes a first fastening device for fastening to a reference component attached to a distal femur, a second fastening device spaced apart distally from the first fastening device for fastening to a tibial cutting block for cutting guidance on a proximal tibia, a circular arc guide connected to the first and second fastening devices by which the second fastening device is movable relative to the first fastening device and guided in a sagittal guide plane, a first linear guide by which the circular arc guide is connected to the first fastening device and movable relative thereto guided in the guide plane along a first guide path, and a second linear guide by which the second fastening device is connected to the circular arc guide and movable relative thereto and guided in the guide plane along a second guide path.

A surgical instrument for use in a knee joint replacement operation includes a reference block with a block rear face configured to bear on a resected femur, a stylus arranged on the reference block, a stylus tip configured to bear on the femur, and two reference feet that are spaced apart mediolaterally from one another and arranged on the reference block. Each reference foot has a foot upper face protruding beyond the block rear face. The foot upper faces are arranged in a common reference plane and are configured to bear on the femur. At least two reference bores extend from the block rear face. Each reference bore is configured to receive a reference pin. A compensation element is configured for form-fitting and/or force-fitting releasable connection to one of the reference feet. The compensation element has an upper face which comes to bear against a posterior condyle.

A surgical instrument system for use in a total knee arthroplasty includes an intramedullary rod and a reference block. The intramedullary rod is elongated between a proximal rod end and a distal rod end and is adapted for introduction into the medullary space of a femur. The reference block is or can be slid onto the distal rod end and has a block rear side oriented in a proximal direction. The block rear side is adapted to bear on distal condyles of the femur. The reference block is mounted to or mountable on the distal rod end by a bearing element having a reception bore for coaxial and radially form-fit reception of the distal rod end. The bearing element is mounted on the reference block so as to be pivotable relative thereto at least about a pivot axis oriented in an anteroposterior direction.

Surgical instrument system

A measurement instrument for use in knee-joint replacement includes a rod and a first jaw. The first jaw has a first inner surface that bears on a front face of a bone resection. A slide is guided on the rod and has a second jaw. The second jaw has a second inner surface oriented counter to the first inner surface. The second inner surface bears on a rear face of the bone resection. A scale between the rod and slide indicates a thickness of the bone resection. A continuation part is connected to the first jaw and has a third inner surface that bears on a proximal tibia. The second jaw has a second outer surface oriented counter to the second inner surface. The second outer surface bears on a distal femur. The scale indicates a longitudinal distance between the distal femur and the proximal tibia.

Multipurpose measurement instrument for use in a knee-joint replacement operation

The invention relates to a medical sawing template system, comprising an aligning apparatus for aligning a medical sawing template relative to a human or animal bone, which aligning apparatus comprises at least one fastening element receptacle for a fastening element fixable in bone, a first coupling member which is coupleable or coupled to a sawing template, a distance-changing device for varying a distance between the fastening element receptacle and the first coupling member, and an angle-changing device for varying an angle between the fastening element receptacle and the first coupling member, wherein the distance-changing device comprises a distance-setting member which is rotatable about a distance-setting member rotational axis, and/or wherein the angle-changing device comprises an angle-setting member which is rotatable about an angle-setting member rotational axis.

Medical sawing template system

The invention relates to a medical system, in particular for implanting a knee joint endoprosthesis, which comprises at least one medical referencing unit whose position in space is detectable using a surgical navigation system. The referencing unit comprises at least one surgical marker element that is arranged or formed on a carrier element and is detectable using a detection device of the surgical navigation system. The at least one referencing unit comprises a base body that carries the carrier element. The base body comprises at least one patient-specific bone contact face faces away from the base body and deviates from being a sector of a surface of a sphere and from being a planar surface. The at least one bone contact face is formed in a manner corresponding to a bone surface of the patient.

Medical system

In a first aspect of the invention relates to a medical guide device for working on a bone. This guide device includes a holding arrangement, which is holdable firmly against a bone, for holding the guide device firmly against the bone and a saw template with a guide slot for a saw blade. In an adjustment position, the holding arrangement and the saw template engage with one another and are arranged to be movable in relation to one another. The holding arrangement and the saw template are movable from the adjustment position into a sawing position in which they are held firmly and immovably in relation to one another. Said guide device includes a coupling arrangement for coupling the holding arrangement and the saw template in the adjustment position and in the sawing position.

Growing community of inventors

Emmingen-Liptingen, Germany

Franz-Peter Firmbach