Patents Assigned to Astra Tech AB
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Patent number: 8267919Abstract: A catheter assembly is disclosed comprising: a hydrophilic catheter; a wetting fluid for wetting of the catheter; and a receptacle enclosing at least the insertable part of the catheter and the wetting fluid. Further, the wetting fluid is a solution incorporating at least one osmolality-increasing compound, and the total concentration of the osmolality-increasing compound(s) is very high, preferably exceeding 600 mOsm/dm3. The wetting fluid could either be arranged in contact with the hydrophilic surface layer of the catheter in the receptacle, for preservation of the hydrophilic surface layer in a wetted state during accommodation in said receptacle and provision of a ready-to-use catheter assembly, or be arranged to keep the wetting fluid separated from the hydrophilic surface layer of the catheter during storage, but to be brought into contact with said hydrophilic surface layer upon activation before an intended use of the catheter. A similar method and wetting fluid is disclosed as well.Type: GrantFiled: December 22, 2004Date of Patent: September 18, 2012Assignee: Astra Tech ABInventors: Jan Utas, Kristina Kull
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Patent number: 8267894Abstract: A self-contained portable apparatus for administration of a drug solution includes a housing having an enclosure for receiving a flexible pouch containing a drug solution, the output of which is connectable to a conduit for delivering the drug solution to a recipient. A pressurization system is arranged for providing a constant and controllable gas pressure to the housing in order to obtain a controllable delivery of the drug solution. The pressurization system includes a pressure source for delivering positive pressure gas; a pressure accumulation tank connected to the source and the second chamber; a one-way valve arranged between the pressure source and the pressure accumulation tank; and a mechanical pressure regulator arranged between the pressure accumulation tank and the housing. Hereby, an extremely stable and well controllable output pressure and output flow is obtainable.Type: GrantFiled: October 10, 2008Date of Patent: September 18, 2012Assignee: Astra Tech ABInventors: Martin Nilsson, Erik Andreen
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Patent number: 8241264Abstract: An apparatus for collecting and salvaging blood includes: a first chamber with a below atmosphere internal pressure for continuous collection of blood through an inlet port; a second chamber for receiving blood from the first chamber through a connection channel; a channel valve manually controllable to close the connection channel; and a control for simultaneously controlling the channel valve and the internal pressure of the second chamber between an internal pressure corresponding to the internal pressure of the first chamber and ambient air pressure, wherein the control is arranged to provide an internal pressure corresponding to the internal pressure of the first chamber to the second chamber through a passageway separated from the connection channel for providing blood from the first chamber to the second chamber.Type: GrantFiled: October 14, 2005Date of Patent: August 14, 2012Assignee: Astra Tech ABInventors: Johan Sjogren, Erik Andreen, Sanna Grange-Jansson, Martin Nilsson
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Publication number: 20120178049Abstract: The present invention relates to a dental component, which can only be connected in one indexing position in one type of dental fixture, but in any one of a plurality of indexing positions with another type of dental fixture. The dental component is provided with primary projections which are not completely evenly distributed around the circumference of an engagement portion of the dental component. The invention also relates to a dental fixture, a dental implant assembly and a dental implant system.Type: ApplicationFiled: October 19, 2011Publication date: July 12, 2012Applicant: ASTRA TECH ABInventors: JOHAN HOLMSTROM, MATTIAS MARKLUND, MATS WENDEL
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Publication number: 20120172848Abstract: A catheter, and preferably a urinary catheter, is disclosed, comprising an elongate shaft, an insertable end formed in or connected to one end of the elongate shaft, and a discharge end formed in or connected to the opposite end of the elongate shaft. Further, the catheter further comprises an insertion aid at least partly encircling the discharge end, and being integrally and releasably connected to the discharge end. Hereby, easy production is achieved, and at the same time, the insertion aid may easily be removed for use as an insertion aid when using the catheter.Type: ApplicationFiled: December 20, 2011Publication date: July 5, 2012Applicant: ASTRA TECH ABInventors: Evelina Gustavsson, Daniel Nestenborg
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Publication number: 20120165791Abstract: A urinary catheter is disclosed comprising an elongate shaft with an insertion end, a handle connected to the elongate shaft at a distance from the aid insertion end, and a discharge end extending past the handle in a direction opposite the insertion end. The elongate shaft is provided with at least one discharge channel having an elongate opening extending along the elongate shaft, wherein the discharge channel(s), including the elongate opening, further extends at least partly into the discharge end.Type: ApplicationFiled: December 20, 2011Publication date: June 28, 2012Applicant: ASTRA TECH ABInventors: Martin Lovmar, Niklas Dahlberg
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Publication number: 20120164599Abstract: The present invention relates to a dental fixture for insertion into a jawbone, said fixture comprising a holding portion which is arranged and configured for holding an engagement portion of a dental component, the holding portion being provided with an indexing section, wherein the shape of the mating contour of the indexing section in a first plane differ from the shape of the mating contour of the indexing section in a second plane being taken at a different height as seen in the apical-coronal extension of said fixture, and wherein the shapes of the mating contours of the indexing section at said first and second planes together allow a received dental component to be positioned in only one or two positions in relation to the fixture. The present invention also relates to a corresponding dental component and to dental implant assemblies.Type: ApplicationFiled: October 19, 2011Publication date: June 28, 2012Applicant: ASTRA TECH ABInventors: JOHAN HOLMSTROM, BJORN BENGTZELIUS
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Publication number: 20120165790Abstract: A catheter assembly is disclosed, comprising a catheter, such as a urinary catheter, which at least a partly is provided with a hydrophilic coating. The catheter assembly further comprises a wetting fluid. The receptacle is in direct contact with the hydrophilic coating of the catheter over essentially the entire length of the part of the catheter being provided with the hydrophilic coating. This may e.g. be achieved by using a shrink wrap material. In order to accomplish adequate wetting, channels or the like may be provided on the inner surface of the receptacle or the outer surface of the catheter.Type: ApplicationFiled: December 20, 2011Publication date: June 28, 2012Applicant: ASTRA TECH ABInventors: Evelina GUSTAVSSON, Jan UTAS
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Patent number: 8168249Abstract: A medical device is disclosed, comprising a substrate, having on its surface, on at least a part thereof, a hydrophilic surface layer providing low-friction surface character of the medical device when wetted by a wetting fluid. The substrate is made of a polymer blend comprising a polyolefin and a composition having molecules with active hydrogen(s), such as polyamide or polyurethane. The hydrophilic surface layer is preferably adhered to the substrate by a polyurea network, whereby said polyurea network forms a covalent bond to said active hydrogen(s) in the substrate. The new substrate material is environmentally acceptable and cost effective, has adequate mechanical and chemical properties and enables the hydrophilic coating to be adequately adhered.Type: GrantFiled: July 18, 2006Date of Patent: May 1, 2012Assignee: Astra Tech ABInventors: Jan Utas, Fredrik Andersson
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Patent number: 8127922Abstract: A catheter assembly (110, 210) comprising a catheter (130, 230) and a receptacle (120, 220) is disclosed. The receptacle is arranged to accommodate at least part of said catheter and having at least one opening (123) for withdrawal of said catheter. Further, the receptacle is provided with an antimicrobial compound (301) at least in the vicinity of the opening and at least on the outer surface of the receptacle, said antimicrobial compound inhibiting microbes from being transferred to said catheter while being withdrawn through said at least one opening.Type: GrantFiled: October 3, 2008Date of Patent: March 6, 2012Assignee: Astra Tech ABInventors: Agneta Nordholm, Martin Nyman, Daniel Holm
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Publication number: 20110306016Abstract: The invention relates to a dental fixture for insertion into a human jawbone. The fixture comprises a bone-contacting surface, wherein at least 15% of the bone-contacting surface is designed such that when a Gaussian 50 ?m high-pass filter and a Gaussian 3 ?m low-pass filter is applied to an original unfiltered set of measurement data which represents a topography of said surface and which is obtained at 50 times magnification by white light interferometry, the resulting filtered set of data presents a surface roughness having the roughness average parameter Sa?1 ?m and the two-dimensional mean slope parameter Rsl?tan 30°.Type: ApplicationFiled: June 1, 2011Publication date: December 15, 2011Applicant: Astra Tech ABInventor: Stig Hansson
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Publication number: 20110295239Abstract: A catheter assembly comprising: a catheter having on at least part of its surface a hydrophilic surface layer intended to produce a low-friction surface character of the catheter by treatment with a wetting fluid prior to use of the catheter; a wetting fluid pouch comprising first and second layers of flexible material joined by a seal to form a sealed closure accommodating said wetting fluid; a receptacle forming a cavity for accommodation of said catheter and said wetting fluid pouch, said wetting fluid pouch being openable by compression of said wetting fluid pouch, thereby enabling the wetting fluid to be discharged into the receptacle, wherein at least one of said first and second layers of said wetting fluid pouch extends beyond the seal of the sealed closure to form an attachment area outside the sealed closure, wherein said wetting fluid pouch is attached to an inner surface of said receptacle, said attachment being provided solely between the receptacle and said attachment area.Type: ApplicationFiled: May 24, 2011Publication date: December 1, 2011Applicant: ASTRA TECH ABInventor: Evelina GUSTAVSSON
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Patent number: 8057229Abstract: At least one embodiment of the present invention relates to a dental implant for supporting a coronal component. In at least one embodiment, the implant includes a fixture part forming an apical bone contact part of the implant, an abutment part forming a coronal component support part of the implant, and an abutment screw, wherein said abutment part is arranged to, in an assembled state of said dental implant, be fixed to the fixture part by the abutment screw, and wherein a coronal end portion of the abutment screw is arranged to, in the assembled state, be positioned coronally of a coronal end portion of the abutment part. At least one embodiment of the present invention also relates to abutment structures and methods for implanting a dental implant.Type: GrantFiled: March 3, 2008Date of Patent: November 15, 2011Assignee: Astra Tech ABInventors: Kent Engström, Anders Halldin
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Patent number: 8052673Abstract: A catheter assembly is disclosed comprising a catheter and a receptacle enclosing said catheter. The receptacle has a first part and a second part, which parts are foldable over each other. Further, at least one sticky adhesive area is arranged on the surface of one of the parts of the receptacle in such a way that the sticky adhesive area is covered by the other part when the receptacle is in a folded disposition, and exposed to the environment when the receptacle is in an unfolded disposition.Type: GrantFiled: July 15, 2005Date of Patent: November 8, 2011Assignee: Astra Tech ABInventor: Daniel Nestenborg
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Patent number: 8029285Abstract: The present invention relates to a screw implant (1) for insertion into a bore hole (50) arranged in bone tissue, said implant having a cancellous portion (3), and a cortical portion (2) having an axial length such that, when installed in the bore hole (50), the engagement of said cortical portion (2) with the bone tissue will generally be confined to the cortical bone tissue layer (52). Said cortical portion (2) presents an outer surface which is threaded for accomplishing said engagement, and has an outer design such that, when being screwed into said bore hole under action of a screwing torque, said cortical portion (2) acts so as to increase the compression of the cortical bone tissue only, in essentially radial directions of the implant, resulting in a distinct increase of the screwing torque needed for screwing the implant (1). Said increase is usable as an indication that the implant (1) is in place or nearly in place in the bore hole.Type: GrantFiled: August 14, 2002Date of Patent: October 4, 2011Assignee: Astra Tech ABInventors: Anders Holmen, Lars Rasmusson, Mats Wendel
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Publication number: 20110151026Abstract: The present invention is based on that local administration of lithium ions in bone tissue has been found to improve the bone formation and bone mass upon implantation of a bone tissue implant in said bone tissue. In particular, the invention relates to a bone tissue implant having an implant surface covered by an oxide layer comprising lithium ions and a method for the manufacture thereof. A blasting powder comprising lithium ions, a method for locally increasing bone formation, and the use of lithium ions or a salt thereof for manufacturing a pharmaceutical composition for locally increasing bone formation are also provided by the present invention.Type: ApplicationFiled: July 8, 2008Publication date: June 23, 2011Applicant: Astra Tech ABInventors: Stig Hansson, Ingela Petersson
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Patent number: 7959440Abstract: A self-tapping dental implant includes a shaft including a coronal end, an apical end, self-tapping structure at the apical end, and an outer surface having a first axial section and a second axial section. The first axial section may be located coronally of the second axial section. Each of the first and second axial sections may include a series of peaks being axially spaced apart by troughs. In addition, the axial spacing between the adjacent peaks in the first axial section may be different than the axial spacing between adjacent peaks in the second axial section. Substantially all of the troughs in the first axial section may lie on an axial plane parallel to a main axis of the dental implant. Furthermore, the self-tapping structure may extend coronally from the apical end into the first axial section. A coronal end portion of the shaft may include the first axial section of the outer surface, and an apical end portion of the shaft may include the second axial section of the outer surface.Type: GrantFiled: July 26, 2007Date of Patent: June 14, 2011Assignee: Astra Tech ABInventor: Stig Hansson
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Patent number: 7883336Abstract: Implant (10) having a shaft which is adapted in use to be embedded in bone tissue and which has an outer surface provided with a circumferentially-oriented roughness. The circumferentially-oriented roughness has first and second axial sections (19, 21) with each section comprising a series of circumferentially-oriented peaks which have a crest and which are axially spaced apart by troughs. The axial spacing (d) between the crests of adjacent peaks in the first axial section (19) is less than the axial spacing (3d) between the crests of adjacent peaks in the second axial section (21). Although the axial spacing between the crests of adjacent peaks in the first and second axial sections of circumferentially-oriented roughness differs, the first and second axial sections of circumferentially-oriented roughness are adapted in use to provide the same or substantially the same pitch.Type: GrantFiled: July 26, 2007Date of Patent: February 8, 2011Assignee: Astra Tech ABInventor: Stig Hansson
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Patent number: D626648Type: GrantFiled: April 22, 2009Date of Patent: November 2, 2010Assignee: Astra Tech ABInventor: Urban Ahlgren
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Patent number: D630733Type: GrantFiled: February 22, 2010Date of Patent: January 11, 2011Assignee: Astra Tech ABInventor: Urban Ahlgren