Abstract:
An apparatus and method are provided for manufacturing articles, such as syringe barrels (126), substantially free from contaminants. The apparatus is an enclosure (10) defining at least a class 100 and MCB-3 environment, and includes a molding isolation module (12) and a packaging isolation module (14). Any contaminants that may exist within the enclosure (10) are removed by the use of horizontal and vertical laminar airflows directed by air filter units (50). Further, the molding temperature may be selected such that it renders the fabricated articles substantially free from contaminants. The molding isolation module (12) and packaging isolation module (14) keep the fabricated articles substantially free from contaminants from the time the articles are molded to the time the articles are placed in sealed containers (128a, 130, 132, 134) for shipment.
Abstract:
A luer connector (10) is provided with a tactile and audible torque indicator. The indicator comprises a detent incorporated between the female cylindrical component (14) of the luer connector and a rotatable collar (32) mounted thereon. As the collar (32) is turned in a clockwise direction, the collar is impeded by the detent formed by opposingly projecting protuberances (34, 38) between the inside of the collar and the outside of the female cylindrical luer component (14). As the threaded luer connection is tightened, requiring additional torque to tighten it further, the additional torque overcomes the resistance of the detent, allowing the collar protuberance to slip past the cylinder protuberance. The female luer component may also be provided with a color patch or pattern (40), to indicate by its rotation, when the detent has been overcome, that the luer connection has been appropriately tightened.
Abstract:
An insertable intracavity probe (10) for use in magnetic resonance imaging of an area of interest in a relatively inaccessible region of the body is disclosed. The probe has an internal pickup coil (18) carried at the distal end of a shaft (12) for rectal insertion of the coil and an inflatable anti-migration cuff (72) to hold the probe in position and prevent outward migration thereof during a procedure. The anti-migration cuff (72) is carried on an outer sleeve (16) which is slidably and rotatably mounted on the shaft. The coil (18) is carried on a resilient tip structure (38) at the distal end of the shaft which is flexible in the plane normal to the plane of the coil. Deflection of the coil assembly is controlled by a pair of control lines (46 and 48) attached to the distal end of the tip structure. The lines may be selectively tensioned to deflect the coil in the direction of tension by a thumb wheel control (56) at the handle (26) of the probe.
Abstract:
An insertable intracavity probe (10) for use in magnetic resonance imaging of an area of interest in a body cavity particularly the colon, has an elongate shaft with a handle (18) at its proximal end and an inflatable balloon structure (16) at its distal end. The balloon structure has an outer balloon (26) containing a loop-type pickup coil (20) for connection to an interfacing network (12). The coil is sandwiched between two internal separately inflatable balloons (22 and 24), and when the probe is inserted, the coil can be optimally positioned relative to the area of interest by controlled differential inflation of the balloons. The probe also has an insertable rod-like mandrel (56) for providing twisting orbital-type movement of the balloon structure on the shaft, by rotation of the mandrel, useful to steer the probe along curves or bends in the body cavity when it is being inserted. In a modified form of the probe, the mandrel can be used to rotate the coil and the internal balloons as a unit within the outer balloon for optimal in situ angular positioning of the coil.
Abstract:
A film feeding mechanism for use during medical x-ray techniques, particularly angiography. Sheets of film (46) are fed sequentially at high speed into a film exposure device (34), in a manner so as to reduce damage to the films, including the build-up and discharge of static charge on the films. In the film exposure device (34), a free-floating lower clamping assembly (144) clamps each film (46) from the center of the film progressively outward towards its leading and trailing ends, to eliminate wrinkling of the film.
Abstract:
The present invention provides a syringe and a powered injector for use therewith in which the syringe is attachable to a powered drive member of an injector over a range of relative axial positions of the syringe plunger and the drive member. The syringe comprises a plunger, and a plunger extension connected thereto and extending rearward from the plunger, such that the syringe may be operated manually or by a powered injector. By providing a plurality of cooperating attachment members over a range of axial positions on at least one of the plunger extension or the powered drive member, operative attachment of the plunger and the drive member is made possible at multiple axial positions of the plunger (within the syringe) for each axial position of the drive member over at least a range of possible plunger axial positions. Attachment of the plunger to the drive member at various axial positions of the plunger thus becomes an easier task than previously possible with current powered injector systems.
Abstract:
The present invention provides a number of pumping systems and injection systems particularly useful for injecting a liquid medium into a patient. In general, the pumping systems comprise a removable pumping unit. The removable pumping unit includes means for pressurizing the liquid medium via the rotational displacement of the liquid medium. The present invention also provides a pumping system comprising a pumping unit for pressurizing the liquid medium and a feedback-controlled drive means in connection with the pumping unit for providing a controlled powered drive to the pumping unit. The pumping system further comprises a flow meter for measuring the flow rate of the pressurized liquid medium exiting the pumping system and control means in communicative connection with the drive means for providing a control signal to control the powered drive provided to the pumping unit. The control means is suitable to receive a feedback signal from the flow meter corresponding to the flow rate of the pressurized liquid medium exiting the pumping unit. The control signal provided to the drive means is a function of the feedback signal.
Abstract:
This invention is an apparatus and process for injection of a multiple number of patients with a sterile fluid while assuring sterility by providing means which control the fluid flow (35) in such ways that injection means (31) are isolated from each other, as well as from the source of sterile fluid, such as by use of selective valving means and disposable dosing units.
Abstract:
The present syringe adapter (100), which permits use of syringes (40) of various types, sizes and configurations to be used with a front-loading injector (10), includes a removable injector face plate (120) having a releasable mounting mechanism (122a, 122b) for attaching the adapter face plate (120) to a front-load injector (10), a reducing sleeve (140) having a recess (190) for receiving the distal flange (44) of syringe (40), locking pivot arms (220, 240) pivotly attached to the reducing sleeve (140) to releasably engage syringe flange (44), and a piston extension (320) provided for extending the injector drive piston (16) for engagement with syringe plunger (46).