Abstract: In some examples, a fluid ejection die includes a plurality of nozzles arranged in a plurality of nozzle columns, the plurality of nozzle columns distributed across a width of the fluid ejection die in a staggered manner, wherein nozzles of each respective nozzle column of the plurality of nozzle columns are spaced apart along a length of the fluid ejection die, wherein the plurality of nozzle columns includes a first pair of neighboring nozzle columns that are spaced by a first distance across the width. The plurality of nozzle columns includes a second pair of neighboring nozzle columns that are spaced by a second distance across the width, the second distance being larger than the first distance.

Abstract: A linear actuator includes permanent magnet annuli arranged about an armature core for axial movement in a tubular stator upon energization of coils arranged in concentric association with the armature. The stator has portions extending radially inwards of the coils and towards one another beneath each coil, which define a spacing between the coil and the armature. The annuli have a substantially radially magnetized structure and the coils are configured for single phase power input. In one embodiment (FIG. 6), two pairs of spaced annuli are arranged on the core, wherein the axial length of the outermost annuli is half the axial length of the inner annuli.

Abstract: A pumping system for blood for a patient includes a sensorless pump having no sensors disposed in the pump itself for moving the blood, a motor and a blood transport port through which blood is received from the patient and is pumped into the patient. The system also includes a controller connected to the pump for controlling the pump so a desired flow rate of blood can be maintained by the pump.

Abstract: A linear actuator includes permanent magnet annuli arranged about an armature core for axial movement in a tubular stator upon energisation of coils arranged in concentric association with the armature. The stator has portions extending radially inwards of the coils and towards one another beneath each coil, which define a spacing between the coil and the armature. The annuli have a substantially radially magnetised structure and the coils are configured for single phase power input. In one embodiment (FIG. 6), two pairs of spaced annuli are arranged on the core, wherein the axial length of the outermost annuli is half the axial length of the inner annuli.

Abstract: A blood pump device comprises a blood pump having blood transport ports, cannulae connected to the ports, and a coating material covering the junction between the inner surfaces of the ports and cannulae. This forms a smooth transition so blood can flow unimpeded therefrom and collection cavities for the blood are eliminated. Also included is a method for producing a smooth coating. The blood pump device comprises a second portion including a stator mechanism, a rotor mechanism, an impeller, a journal, and a seat member. The second portion is constructed to pump blood through the cannulae when power is provided. The blood pump device is also equipped with a safety occluder device, a sensor for detecting back emf in the stator mechanism, and a controller having the capability of indicating stator current and rotor speed.

Abstract: The present invention pertains to a circulatory system, such as a circulatory assist system for a patient. The system comprises a blood pump having tubing fluidically communicating with a person's blood vessel. The blood pump can be, for instance, a centrifugal blood pump but is not limited thereto. The system also comprises an occluder device for controlling flow of the blood pump. The occluder device is in contact with the tubing of the blood pump. The occluder device can be incorporated into an anti-kink sheath over the outlet graft tubing of the blood pump. Preferably, the system comprises control means for actuating the occluder device when the blood pump malfunctions. In this manner, potentially fatal retrograde blood due to pump failure is automatically prevented. In a preferred embodiment, the occluder device comprises a cylindrical tube and a bladder mechanism connected to the inside surface of the tube. Type bladder mechanism preferably comprises a bladder and means for inflating the bladder.

Abstract: A blood pump device which includes a blood pump having blood transport ports and cannulae connected to the ports. The blood pump device also includes a coating material covering the junction between the inner surfaces of the ports and cannulae. A method of producing a smooth coating. A blood pump device including a second portion having a stator mechanism and a rotor mechanism disposed adjacent to and driven by the stator mechanism. The second portion has a journal disposed about the rotor mechanism to provide support therewith. The second portion has an impeller disposed in the chamber and a seal member for sealing about a shaft of the impeller. The seal member is fixedly attached to the journal so that the seal member is supported by the journal. A mechanism for providing power to the blood pump so that blood can be pumped through a cannula.

Abstract: The present invention pertains to a circulatory system, such as a circulatory assist system for a patient. The system comprises a blood pump having tubing fluidically communicating with a person's blood vessel. The blood pump can be, for instance, a centrifugal blood pump but is not limited thereto. The system also comprises an occluder device for controlling flow of the blood pump. The occluder device is in contact with the tubing of the blood pump. The occluder device can be incorporated into an anti-kink sheath over the outlet graft tubing of the blood pump. Preferably, the system comprises control means for actuating the occluder device when the blood pump malfunctions. In this manner, potentially fatal retrograde blood due to pump failure is automatically prevented. In a preferred embodiment, the occluder device comprises a cylindrical tube and a bladder mechanism connected to the inside surface of the tube. The bladder mechanism preferably comprises a bladder and means for inflating the bladder.

Abstract: The present invention pertains to a blood pump device which comprises a blood pump having blood transport ports and cannulae connected to the ports. The blood pump device also comprises a coating material covering the junction between the inner surfaces of the ports and cannulae. This forms a smooth transition so blood can flow unimpeded therefrom and collection cavities for the blood are eliminated. The invention is also related to a method of producing a smooth coating. The present invention is a blood pump device comprising a second portion having a stator mechanism and a rotor mechanism disposed adjacent to and driven by the stator mechanism. The second portion has a journal disposed about the rotor mechanism to provide support therewith. The second portion has an impeller disposed in the chamber and a one-piece seal member for sealing about a shaft of the impeller. The seal member is fixedly attached to the journal so that the seal member is supported by the journal.

Abstract: A diaphragm pump has a magnetic actuator. A permanent magnetic assembly is secured to the outside face of the diaphragm of the pump and provides at least a pair of opposed magnetic pole faces directed away from the diaphragm. An electromagnet assembly has at least a pair of opposite poles located opposite but spaced from the pole faces of the permanent magnet assembly. Energizing the electromagnet with alternating current, alternately repels and attracts the permanent magnet assembly, thereby reciprocating the diaphragm to operate the pump.

Abstract: This relates to blow molded containers, and particularly to the formation of blow molded containers formed of a plastic material which is subjectable to a high degree of biaxial orientation for maximum strength. Two containers are formed in each blow molding operation with each container having throughout the stress areas thereof a high degree of biaxial orientation. A container may be in the form of a bottle having an as formed open bottom which is closed by a metal end unit seamed in place. Other containers will have open mouths closed by conventional closures including metal end units which are seamed to the container body or by closure caps which may be releasably interlocked with the neck finish of the container in several known modes. In every instance the containers are formed with a minimum of scrap. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.

Abstract: This relates to a method of forming a thermal/collapse-resistant highly oriented polyester container for use in hot fill applications. In accordance with the method of a polyester preform is reheated and then placed in a blow mold cavity whereat the preform is distended to match the blow mold cavity to form an intermediate article including a container having an oriented end unit receiving finish of a diameter materially greater than the diameter of the preform. The method is characterized in that in providing the preform the composition of the polyester, the draw ratio during distending of the preform and reheat conditions are all controlled to provide a container with a sidewall and finish density in the range of 1.350 to substantially but less than 1.370 grams/cubic centimeter.

Abstract: This relates to the blow molding of containers wherein the containers are formed of biaxially oriented plastic material. A multi-sided hollow member is blown within a convention blow mold using a conventional type of preform. Each side, when severed from the top and bottom of the hollow member and from each other forms a tray or box like container having a bottom, side walls and a peripheral sealing flange. The efficiency of the container from a weight to capacity standpoint is at a maximum due to the biaxial orientation of the plastic material.

Abstract: This relates to the forming of a blow molded polyester container wherein a bottle having a conventional upper neck portion and an intermediate body is provided with a lower portion which includes an annular seaming flange which is integrally connected to the lower end of the body and wherein, with the exception of the seaming flange, the lower portion is removed and the bottle is closed by a separately formed bottom double seamed to the lower end of the body utilizing the annular seaming flange. During the interim between the removal of the bottle lower portion and the application of a separate bottom, the bottle is fully open so as to be readily commercially interiorly coated with a barrier coating. The separately formed bottom may be readily formed of metal and may be so constructed as to provide a large diameter base for supporting the bottle in upstanding position. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.

Abstract: This relates to the cutting or trimming of a blow molded polyester resin article utilizing a CO.sub.2 laser. The article is axially positioned and rotated while the laser beam is focused and concentrated on a preselected portion of the article. The laser beam beneficially vaporizes the polyester resin in the cutting thereof as opposed to forming a dust. Further, the action of the laser is one wherein a certain melting occurs so that the resultant cut edge of the retained part of the article is rounded and sealed.

Abstract: A plastic jar is formed by blow molding a combination adapter and jar and thereafter the jar is cut from the adapter utilizing a laser beam. The jar may be blow molded from a preform which is of an injection molded laminated construction so that the wall of the jar is formed of plural layers. The head generated by the laser beam will melt and bond together these layers as opposed to permitting delamination as would occur should the jar be cut from the adapter by a knife or the like. The cut surface of the jar forms the mouth defining surface of the jar and it is preferred that the cut be inclined at a slight angle to a plane normal to the axis of the jar. Damage to the diametrically opposite surface of the jar by portions of the laser beam being utilized for cut off passing through the jar is prevented by a pressurized gas supply tube which is in the path of the laser beam and serves as an absorber for stray rays. This abstract is not to be construed as limiting the claims of the application.

Abstract: This relates to the blow molding of containers wherein the containers are formed of biaxially oriented plastic material. A multi-sided hollow member is blown within a convention blow mold using a conventional type of preform. Each side, when severed from the top and bottom of the hollow member and from each other forms a tray or box like container having a bottom, side walls and a peripheral sealing flange. The efficiency of the container from a weight to capacity standpoint is at a maximum due to the biaxial orientation of the plastic material.

Abstract: This relates to the provision of a snap-in closure for plastic beverage bottles. The neck of a conventional bottle is foreshortened through the elimination of the customary closure threads and the extreme end of the neck is reformed by way of an ultrasonic tool to define a radially inwardly turned sealing flange having a pour opening of a preselected controlled diameter therethrough. A snap-in closure is provided with the closure including a plug with a radially outwardly directed flange, the plug and flange being snapable through the pour opening in the sealing flange and the closure flange and thereafter engaging the sealing flange to seal the bottle. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.

Abstract: Sheet materials for cardiovascular and other prosthetic implants are fabricated of synthetic elastomers. These materials are characterized by molecular configurations that produce a nonlinear tensile modulus characteristic similar in shape to that of natural tissue. Selected elastomers, when formed as sheet material of appropriate geometrical configuration, promote the formation of natural tissue thereon which is appropriate for the mechanical characteristics desired.

Abstract: A frame system for heart valve prosthesis. A first frame has at least three generally parallel legs each comprising a pair of rod portions connected at one end and diverging at the other end as lobes respectively connecting with rod portions of others of said legs. The lobes form an aperture therebetween and the legs are adapted to receive the margin of a valve leaflet between the rod portions thereof. Thus, the leaflet may be secured to two adjacent legs and the interconnecting lobe so as to have a free edge extending between said adjacent legs. A second frame is adapted to nest with the first frame and comprises a rod formed to be substantially congruent with the interconnecting lobes, whereby the leaflets may be secured to and between the frames.