The present disclosure relates to an arrangement (21, 71) for minimal invasive intervention, the arrangement (21, 71) comprising a rotation body (23, 73), a retaining device (25, 75) and at least one position sensor (27, 77, 79). The rotation body is adapted to receive a medical instrument (3, 5, 7, 9, 33), or the rotation body forms a part of a medical instrument (83). The medical instrument comprises a shaft (31, 81). At least a portion of a surface of the rotation body comprises a pattern (35, 87, 91). The retaining device is adapted to at least partly surround the rotation body, such that the rotation body is retained by the retaining device in a manner allowing rotational movement of the rotation body in relation to the retaining device. The at least one position sensor is adapted for determining a position in at least two coordinates of the pattern of the rotation body. The at least one position sensor is located at, in or on the retaining device. The disclosure further relates to a medical instrument (3, 5, 7, 9, 33, 83), a kit (63) comprising the arrangement, a system (65) for follow-up of a minimal invasive intervention and a method for determining a position of a medical instrument by means of the arrangement or kit.

The present invention relates to an ultrasound calibration device comprising a body portion having at least one echogenic fiducial; a marker portion having at least one tracking marker which can be detected by a medical tracking system; and a hook-shaped mounting portion extending from the body portion.

The present invention also relates to a method for calibrating an ultrasound probe, comprising the steps of filling a container with a fluid, in particular a physiologic salt solution; placing an ultrasound calibration device in accordance with the invention into the container; comparing, with the aid of a medical navigation system, a calculated position of at least one fiducial with a determined position of the at least one fiducial which is determined using a tracked ultrasound probe.

A surgical system includes a robotic device, and a surgical tool coupled to the robotic device and comprising a distal end. The system further includes a neural monitor configured to generate an electrical signal and apply the electrical signal to the distal end of the surgical tool, wherein the electrical signal causes innervation of a first portion of a patient's anatomy which generates an electromyographic signal, and a sensor configured to measure the electromyographic signal. The neural monitor is configured to determine a distance between the distal end of the surgical tool and a portion of nervous tissue based on the electrical signal and the electromyographic signal, and cause feedback to be provided to a user based on the distance.

Disclosed is a fixation system and method. The system and method may fix a selected member to a subject during a procedure. The selected member may include a tracking device or registration member.

A system for performing a computer-aided surgical procedure is disclosed. Using a computer program, optical sensors detect and record the location of one or more optical tracking devices. The computer program then generates navigational reference information regarding position and orientation information of one or more specific body parts of a patient. The tracking device is mounted to the patient using a tracking frame and a coupler base, wherein the coupler base has a plurality of surfaces to which the tracking frame is configured to be removably attached. Because the characteristics of the coupler base are known to the computer program, all potential locations of the tracking frame, when attached to the coupler base, are known. Thus, the tracking frame's axis and orientation may be altered to allow movement of the patient during the surgical procedure without compromising position and orientation information of the body parts.

A device for checking post cut plane accuracy and alignment following bone removal in a bone of a patient during a computer-assisted surgical procedure to create a bone surface is provided. The device includes a body having an axis and adapted to contact the bone surface. One or more alignment features are associated with the body and are accessible when the body is in contact with the bone surface. Each of the one or more alignment features has a known orientation and position relative to the axis. A method for checking post cut plane accuracy and alignment following removal of bone from a patient to create a bone surface during a computer-assisted surgical procedure is also provided. A computer-assisted surgical system is provided that includes a tracking system, a tracked digitizer probe, the aforementioned device, a tracked surgical device, and one or more computers with software for determining the orientation.

A registration system including a bone pin guide and a bone pin clamp. The bone pin guide may include a guide body, a first guide including a first guide through-hole having a first longitudinal axis, and a second guide including a second guide through-hole having a second longitudinal axis. The bone pin guide may guide first and second bone pins into a bone via the first and second guides. The bone pin clamp may include a clamp body, first, second, and third clamp through-holes extending through the clamp body, a plurality of registration indents defined on the clamp body, and a clamping mechanism including at least one adjustable fastener. The bone pin clamp may receive the first and second bone pins in the first and third clamp through-holes and guide a third bone pin into the bone via the second clamp through-hole.

Surgical systems and methods are disclosed for creating a 3D model of a patient's affected area using an imaging device, using the model to determine an implant orientation and position, creating patient-matched instrumentation, placing the patient-matched instrumentation on the patient's anatomy, registering a computer-assisted surgical tool, and acquiring registration information. The methods and systems also include associating the surgical tool with a computer to perform a computer assisted surgery. Also disclosed are embodiments of patient-matched instrumentation to acquire registration information.

A fixation device for fixing a first part of a surgical instrument to a second part of the surgical instrument. The fixation device has a longitudinal axis and includes a fixation body configured to accommodate a portion of the first instrument part and a portion of the second instrument part therein. A first fastening member and at least one movable first clamping member are configured to clampingly engage at least the first instrument part so as to fix at least the first instrument part to the fixation device. A first actuation member is configured to receive at least a portion of the fixation body. The first actuation member includes a second fastening member configured to engage with the first fastening member. The first actuation member is configured to exert a clamping force on the first clamping member when the second fastening member is in engagement with the first fastening member.

Systems and methods for validating a pose of a marker are provided. First pose information and second pose information of the marker may be received. A pose difference between the first pose information and the second pose information may be determined. A pose of the marker may be validated in response to determining that the pose difference is less than a pose threshold.