86 results about "Needle guidance" patented technology

A compact ultrasound needle guidance system and method of use is described. The needle guidance system has components to adjustably target a needle's destination in the plane of a two-dimensional ultrasound image before insertion of a needle into a patient. Needle movement is tracked using a position detector that provides a visual display of the needle path on the ultrasonic image.

The invention relates to a needle guidance system provided by a needle with a steerable tip. The needle has a cannula and a stylet. The stylet adjacent to its tip has a naturally curved portion The stylet is movable in two degrees of freedom with respect to the cannula-axial translation and axial rotation with respect to the cannula axis. When extended, the stylet curves off-axis and provides cannula tip steering. Driving and/or steering systems may be provided to the orientation and relatively move the stylet.

A needle guidance device for use with an ultrasound transducer is made up of a frame for housing the transducer, a needle guide unit which has a sleeve in line with an ultrasound beam and two arms which affix the frame to the needle guide unit.

A vascular access device ultrasound guidance system which provides a novel ultrasound imaging head interface for vessel access. The system comprises a fitted basket/VAD guide for attachment to a hand held ultrasound transducer. The VAD guide, being integrally molded to the fitted basket, comprises a releasible guide assembly for a VAD needle guide. In addition, the needle guide assembly comprises means for anchoring the VAD to a patient's skin following successful insertion. A magnetic needle guide system is disclosed. A fluid sampling device which integrates needle guidance and, safety needle capture in a single guide head is also disclosed.

The invention relates generally to biopsy needle guidance which employs an x-ray/gamma image spatial co-registration methodology. A gamma camera is configured to mount on a biopsy needle gun platform to obtain a gamma image. More particular, the spatially co-registered x-ray and physiological images may be employed for needle guidance during biopsy. Moreover, functional images may be obtained from a gamma camera at various angles relative to a target site. Further, the invention also generally relates to a breast lesion localization method using opposed gamma camera images or dual opposed images. This dual head methodology may be used to compare the lesion signal in two opposed detector images and to calculate the Z coordinate (distance from one or both of the detectors) of the lesion.

A method and apparatus of ultrasound guidance for interventional procedures involving a needle includes acquiring ultrasound data from a region of interest, positioning the needle with respect to the region of interest, displaying an image based on the ultrasound data, calculating a risk of bending for the needle, and presenting the risk of bending for the needle.

A delivery system for dispensing sterile liquids into the oral cavity using a novel pre-angled needle guidance assembly attached to a conventional anesthetic needle and conventional anesthetic syringe loaded with a novel cartridge ampule containing a certain liquid solution. This system substantially improves the efficiency of delivering small amounts of sterile fluid to the oral cavity by hypodermic means or by irrigation means using pre-angled needle guidance assemblies to temporarily bend needles or cannulas in order to reach otherwise impossible-to-reach locations within the oral cavity while also providing the ability to dispose of used needles without re-bending and thus complying with federal OSHA, state OSHA, and state regulatory disposal regulations.

A patient mountable robot includes a four link mechanism, three actuators, and a first robot base. The mechanism includes four links that form a closed loop structure. The four links include a base link that includes a spherical joint. The mechanism provides two rotational degrees of freedom about the spherical joint for a needle that is configured to pass through the spherical joint. A first actuator is attached to the mechanism and moves the mechanism to provide the first of the two rotational degrees of freedom. A second actuator is attached to the mechanism and moves the mechanism to provide the second of the two rotational degrees of freedom. The base link of the mechanism passes through the first robot base. A third actuator is attached to the first robot base and linearly translates the base link so that a translational degree of freedom is provided for the needle.

A mechanism for aligning a hypodermic needle or other probe with a predetermined location within a patient has a radio-transparent guide with a lengthwise slot for accommodating the needle. A pair of radiopaque rings spaced at opposite ends of the guide enables the surgeon to align the needle with the predetermined location and advance the needle in a continuous and steady movement toward the predetermined location in spite of the intermittent activation and deactivation of a two-dimensional x-ray apparatus. A slot in each of the rings, moreover, forming gaps in alignment with the lengthwise guide slot permit the guide to be removed as the needle approaches the predetermined location.

The invention relates generally to biopsy needle guidance which employs an x-ray/gamma image spatial co-registration methodology. A gamma camera is configured to mount on a biopsy needle gun platform to obtain a gamma image. More particular, the spatially co-registered x-ray and physiological images may be employed for needle guidance during biopsy. Moreover, functional images may be obtained from a gamma camera at various angles relative to a target site. Further, the invention also generally relates to a breast lesion localization method using opposed gamma camera images or dual opposed images. This dual head methodology may be used to compare the lesion signal in two opposed detector images and to calculate the Z coordinate (distance from one or both of the detectors) of the lesion.

Disclosed are method and apparatus for guiding a needle during an interventional radiology procedure. The target and skin entry point are pre-determined in three-dimensional medical imaging scans. The needle trajectory is defined by the target and skin entry point, which is physically marked on the skin. A dual-headed laser emitting two laser beams is positioned and aligned such that one laser beam is aimed at the skin entry point and the other laser beam is aimed at an external reference point, which is determined such that the axis of the laser beam aimed at the skin entry point is substantially collinear with the needle trajectory. The needle is inserted while maintaining the axis of the needle substantially collinear with the axis of the laser beam aimed at the skin entry point.

The invention relates to the technical field of medical ultrasounds, in particular to an ultrasound intervention puncture needle guidance monitoring system and method. The ultrasound intervention puncture needle guidance monitoring system comprises a medical ultrasonic transducer, a puncture needle positioning frame, an axial optical displacement sensor, a radial angle optical displacement sensor and an ultrasonic image monitoring device. Due to the design of the axial optical displacement sensor and the radial angle optical displacement sensor, the advantage that the displacement is detected through the optical displacement sensors in a non-contact and high-precision mode can be used; the axial displacement value and the radial angle value of a puncture needle are automatically fed back in real time, and the problems that in the prior art, an angle-fixed guidance puncture frame does not completely covert the distribution area range of a target spot, and the needle tip position and the needle path route of the puncture needle can not be calculated are solved; medical workers are helped to adjust the needle inlet angle in advance, and damage caused by multiple times of puncture to patients is effectively reduced.

The invention discloses an automatic seed implantation device. The device comprises a mounting base, a push needle, a first driving mechanism, a second driving mechanism, a feeding mechanism and a puncture needle guide mechanism, wherein a first track and a second track are arranged on the mounting base side by side; a push needle mounting seat is arranged on the first track; a puncture needle guide mechanism mounting seat is arranged on the second track; the push needle and the puncture needle guide mechanism are arranged on the push needle mounting seat and the puncture needle guide mechanism mounting seat; the push needle and the puncture needle guide mechanism are driven to move through the first driving mechanism and the second driving mechanism; the puncture needle guide mechanism comprises a driving assembly and a clamping assembly; the driving assembly drives the clamping assembly to clamp and loosen; the feeding mechanism is arranged at one end of the mounting base, and seedsin the feeding mechanism are pushed out through a push needle; and an external mechanical interface is arranged on the mounting base and is used for controlling the whole movement of the seed implanter. Seed implantation can be automatically executed by a machine, and ionizing radiation and implantation deviation of doctors in an operation are avoided.

Disclosed is a coinjection nozzle for a two-component injection molding tool, which is used for producing parisons. The inventive nozzle comprises a nozzle holder (1) and an nozzle tip (4) that is mounted therein. A shut-off needle (11) is directed within a needle guide (3) at least in a top portion (K) of the needle tip (4). An additional nozzle sleeve (2) is disposed between the needle guide (3) and the nozzle tip (4). A first tubular delivery duct (A) extends between the nozzle sleeve (2) and the nozzle tip (4) while a second tubular delivery duct (B) extends between the nozzle sleeve (2) and the needle guide (3). The needle guide (3) is provided with a conical needle-guiding head (3a) located in the top portion (K) of the nozzle. A throat is provided in the first tubular delivery duct (A) in the area (E) of the nozzle. The needle-guiding head (3a) and the nozzle sleeve (2) are shaped in such a way that the second tubular delivery duct (B) narrows in a final area so as to form a shear edge (F).

Biopsy of the prostate using 2D transrectal ultrasound (TRUS) guidance is the current gold standard for diagnosis of prostate cancer; however, the current procedure is limited by using 2D biopsy tools to target 3D biopsy locations. We have discovered a technique for patient-specific 3D prostate model reconstruction from a sparse collection of non-parallel 2D TRUS biopsy images. Our method can be easily integrated with current TRUS biopsy equipment and could be incorporated into current clinical biopsy procedures for needle guidance without the need for expensive hardware additions. We have demonstrated the model reconstruction technique using simulated biopsy images from 3D TRUS prostate images of 10 biopsy patients. This technique of model reconstruction is not limited to the prostate, but can be applied to the reconstruction of any tissue acquired with non-parallel 2-dimensional ultrasound images.

The invention relates generally to biopsy needle guidance which employs an x-ray/gamma image spatial co-registration methodology. A gamma camera is configured to mount on a biopsy needle gun platform to obtain a gamma image. More particular, the spatially co-registered x-ray and physiological images may be employed for needle guidance during biopsy. Moreover, functional images may be obtained from a gamma camera at various angles relative to a target site. Further, the invention also generally relates to a breast lesion localization method using opposed gamma camera images or dual opposed images. This dual head methodology may be used to compare the lesion signal in two opposed detector images and to calculate the Z coordinate (distance from one or both of the detectors) of the lesion.

A medical device is provided, configured to access a target site within a patient body. The device may be provided as a kit including pre-assembled components. Embodiments of the device include an elongate flexible access needle including a needle lumen disposed through at least a longitudinal length of the needle; an elongate wire guide pre-loaded into at least a lengthwise portion of the needle lumen and extending to at least near a distal end of the needle end; and a needle sheath including a longitudinal sheath lumen through which the access needle is disposed; where the distal needle end comprises a piercing tip configured for penetrating tissue to access a target site. A method of use is provided where the needle may be withdrawn over the pre-loaded wire guide after it has been directed to a target site and the sheath as been advanced over the needle's distal end, in a manner freeing the wire guide for further guidance or direction, and for introduction of another device along the wire guide.

It is an object of the invention to provide for a system that can be used to improve a cancer related clinical workflow compared to the current cancer related clinical workflow. This object is achieved by an image guided system configured for supporting a combined biopsy and treatment procedure using image guidance to bring a needle from a defined location to a predetermined end location in a subject of interest. The image guidance system comprises a medical imaging system (580) configured for acquisition of medical images of a region of interest (403) in the subject of interest, wherein the medical images are used to determine a current position of the predetermined end location (404). The image guidance system further comprises needle guidance system (402, 403) configured for defining a needle position in space and thereby defining the defined location (405, 406) and configured for guiding a biopsy and treatment needle into the region of interest. The image guidance system also comprises a user interface system (530) configured for supporting both the biopsy and treatment procedure, such that a patient setup needs to be executed only once. The user interface system (530) comprises a calibration unit (540) for aligning the needle guidance system (402, 403) with the medical images.