摘要:
The invention provides a robot hand that can mimic the movements of a human hand in operation. The robot hand includes a thumb and at least one opposing finger having at least two phalanxes connectable to each other by a distal phalanx joint. The thumb of the robot hand also includes a joint which allows the thumb to move transversely with respect to the opposing fingers. The robot hand can also include one or more additional fingers disposed on an opposite side of the thumb. The robot hand can be operated mechanically or electrically through controlling motors.
摘要:
The subject invention pertains to a method and apparatus for placing a minimally-invasive access with respect to a patient's bone or other non-soft tissue. The subject invention can use a drilling machine incorporating an ultrasound motor. The subject drilling machine can be applied to sample, for example, bone biopsies under MRI control. In a specific embodiment, the subject ultrasound motor can be completely manufactured of non-magnetic materials, such as plastics, titanium, and titanium alloy, or ceramics and piezoceramics. The subject drilling apparatus can be placed into an MRI near field without influencing the image quality, and without the drilling apparatus itself being disturbed by the MRI magnet, gradient, or high-frequency field. The subject invention can incorporate good shielding with the subject drilling apparatus use of these materials, and can achieve minimal, if any, image distortions or so-called artifacts. Thus, the subject invention can involve the problem by use of non-magnetic materials of low magnetic susceptibility for the design of an actuation unit.
摘要:
The invention provides a device for correlating the internal location of an anatomical point of a human or animal patient with a location on the external body contours of the patient. In one embodiment, the invention is particularly suited for external positioning of a medical instrument for insertion into the patient's body to contact the anatomical point
摘要:
An endoscopic gripper consists of a guide tube with an operating device arranged at the proximal end and a pair of gripper jaws located at the distal end, which pair of gripper jaws are connected to each other by joint means in such a way that an opening and closing of the gripper jaws via tension or pressure means is made possible. Each of the gripper jaws is formed from segments and the segments are linked together by joints in such a way that a swivelling of the individual segments among each other between an unfolded position guaranteeing the operability of the gripper and a folded-together position is made possible. The segments are unfoldable by another tension means or by a pressure means after the positioning of the gripper at the surgical object.
摘要:
An elongate device, such as a catheter, for interventional MRI has one or more passive LC-circuits attached to its distal tip portion for position tracking. The LC-circuits includes an inductor winding and a three-dimensional “trench” capacitor. The LC-circuits are integrated in a piece of silicon. Optical fibers may be included in the device for optical probing of tissue surrounding the distal tip portion.
摘要:
The subject invention pertains to a method and apparatus for MR-guided biopsy. The subject invention can be applied to, for example, prostate biopsy. In a specific embodiment, the subject invention can provide a mechanical tool for stabilizing the patient in prone position and to guide a biopsy needle into defined targeted lesions in the prostate gland. The patient can lay prone in the MRI. The subject apparatus can guide an MR-visible, sterile needle sleeve, which can have a hollow tube filled with contrast media, through the anus onto the inner wall of the colon. Due to the visibility of the contrast media in the sleeve, the apparatus can be guided to the exact position. The sleeve can incorporate a tube within the contrast media filled sleeve to insert the biopsy needle and to push this needle forward into the prostate. The subject apparatus can utilize various mechanical means to stereotactically move the needle or needle sleeve in various directions.
摘要:
The subject invention pertains to a device for inserting medical instruments into the human body. In a specific embodiment, the subject device can be made from a material which is invisible under Magnetic Resonance Imaging (MRI). The subject device can incorporate three or more MRI compatible marks. The imaging of these three or more markers can allow the determination of the orientation of the device. A virtual image of the device can then be shown in an MRI image.
摘要:
The subject invention pertains to a tissue marker. The subject invention also relates to methods and apparatus for deploying a tissue marker. In a specific embodiment, the subject marker is magnetic resonance imaging (MRI) compatible. In additional embodiment, various components of the subject marker deploying apparatus are MRI compatible. A specific marker in accordance with the subject invention is flexible such that the marker has an equilibrium shape, which the marker will have when deployed in tissue to be marked, and an elongated shape, which the marker can be bent into to be inserted into a marker needle.
摘要:
The subject invention pertains instruments for use in nuclear spin tomography comprising a metal alloy comprising aluminum, vanadium, and titanium. In a specific embodiment, the subject invention relates to cardiovascular stents which can exhibit a low incidence of artifacts and are viewable in a nuclear spin tomography unit. The subject invention also pertains to a method for processing instruments for use in nuclear spin tomography. Such processing can comprise application of a wet chemical etching solution. In a specific embodiment, the wet chemical etching solution can comprise three parts hydrochloric acid and two parts saltpeter acid.
摘要:
A needle is proposed including a cannula or hollow shaft with a multilumen insert inside. The insert comprises at least two lumen. Both the insert as well as the cannula have bevelled ends. In the insert substantially straight cleaved fibers are present that may be connected at the proximal end to a console. At least one of the distal fiber ends in the insert may protrude more than half the fiber diameter out of the insert. Furthermore, the bevel angle of the insert is different from the bevel angle of the cannula such that combination cannula and insert is such that the fiber ends do not protrude the bevel surface of the cannula.