Abstract: 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.
Abstract: Disclosed are medical prosthetic devices or medical implants which exhibit improved biocompatitibly. The devices or implants include a metal material, e.g. titanium, in which the metal surface parts are coated with a corresponding hydride material that contains one or more biomolecule substance. This biomolecule substance may contain one or more biologically active molecules, e.g. bio-adhesives, biopolymers, blood proteins, enzymes, extra cellular matrix proteins, extra cellular matrix biomolecules, growth factors and hormones, peptide hormones, deoxyribonucleic acids, ribonucleic acids, receptors, enzyme inhibitors, drugs, biologically active anions and cations, vitamins, adenosine monophosphate (AMP), adenosine diphosphate (ADP), adenosine triphosphate (ATP), marker biomuolecules, amino acids, fatty acids, nucleotides (RNA and DNA bases), or sugars.
Type:
Grant
Filed:
December 6, 2001
Date of Patent:
March 20, 2007
Assignee:
Astra Tech AB
Inventors:
Jan Eirik Ellingsen, Staale Petter Lyngstadaas
Abstract: 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.
Abstract: A femur fixture for a hip-joint prosthesis comprising an intraosseous anchoring structure of a generally circular cross-section for screwing laterally into a complementary bore drilled laterally into the neck of a femur after resection of the femur head to an anchored position. The intraosseous anchoring structure has a proximal end, a distal end, a relatively short frusto-conical proximal section at the proximal end, and a proximal cylindrical section having a screw thread profile thereon. The proximal cylindrical section extends from the frusto-conical proximal section towards the distal end of the anchoring structure. The frusto-conical proximal section and the proximal cylindrical section each being dimensioned so as to bear against the cortex of the femur neck when the intraosseous anchoring structure is in the anchored position.
Type:
Grant
Filed:
October 6, 2000
Date of Patent:
January 2, 2007
Assignee:
Astra Tech AB
Inventors:
Tomas Albrektsson, Lars Carlsson, Magnus Jacobsson, Warren MacDonald, Stig Wennberg
Abstract: A use in a medical device of at least one salt of organic acid(s), and preferably a benzoate or a sorbate, as an antimicrobial agent is disclosed, and in particular for the manufacturing of an antimicrobial coating for a medical device for the prevention of bacterial infection. This is very useful in medical devices having a hydrophilic coating, such hydrophilic urinary catheters. It is further preferred that the pH of the hydrophilic coating is controlled to be in the range 4.0-8.0, and preferably in the range 5.0-6.0. It is also preferred that the pH of the hydrophilic coating is controlled to be below 7.0. The pH of the hydrophilic coating could be controlled by means of a pH buffer, and preferably a citrate or phosphate buffer. Specifically, the provision of the salt of organic acid in combination with a pH buffer has proven surprisingly efficient for inhibition of bacterial growth, and for prevention of bacterial infections.
Type:
Application
Filed:
April 20, 2006
Publication date:
October 26, 2006
Applicant:
Astra Tech AB
Inventors:
Jan Utas, Andrea Schmid, Agneta Nordholm, Martin Nyman
Abstract: A rectal insertion device (1) for the treatment of disorders of the digestive tract of a human or animal patient having a body (3, 5) comprises a forward section (8) which in an operative position of the device is disposed in the anal canal of the patient, a first passageway (9) which extends forward opening (11) in the forward section, a rearward section (3) having a forward end which in the operative position is disposed extra-coporeally and a second passageway (4) which extends rearwardly in the device from a second forward opening (7) in the forward end of the rearward section. The second passageway acts to catch faeces discharged from the anal canal not caught in the first passageway.
Abstract: A wetting apparatus (1) for wetting a hydrophilic urinary catheter (3), comprising: a wetting fluid container (4) containing a wetting fluid and being openable by the application of a pulling force thereto; a wetting receptacle (2); and a hydrophilic urinary catheter (3) to be wetted by said wetting fluid and being arranged within said wetting receptacle (2). The wetting fluid container (4) is arranged within the wetting receptacle (2), and the wetting receptacle is extendable, for opening the wetting container without rupturing a sealed condition of the wetting receptacle.
Type:
Grant
Filed:
December 18, 2000
Date of Patent:
June 27, 2006
Assignee:
Astra Tech AB
Inventors:
Daniel Nestenborg, Jan Utas, Agneta Pettersson
Abstract: The invention relates to components for an improved system for pick-up impression making at a dental implantation site, including an abutment, an abutment replica and an impression coping. The invention also relates to a series of abutments and to a set comprising an abutment and an impression coping. The impression coping has a through passage extending from a coronal end to an apical end of the impression coping and includes an abutment surrounding region for surrounding the abutment. The abutment surrounding region has a coronal end, an apical end and an inner wall. The inner wall includes at least one abutment contact surface for contact with the abutment, and at least one space forming surface for being spaced apart from the abutment in order to provide a space between the space forming surface and the abutment.
Abstract: The present invention relates to an apparatus (1) for reducing the fat content of blood and in particular to an apparatus (1) for reducing the fat content of pericardial suction blood. The apparatus (1) has a conduit for blood, an absorbing filter (42, 61, 168) located in the conduit and an associated temperature control means for adjusting the temperature of blood before it flows through the filter (42, 61, 168).
Abstract: A storage package (1) contains a medical device (7) having a coated surface (8 ) which exhibits a reduced friction when wetted with a wetting liquid and a supply of the wetting liquid (9). The package is adapted such that the coated surface of the medical device is maintained contact with the supply of wetting liquid during storage. A good shelf-life for the medical device is achieved an where the medical device is a urethral catheter the catheter is immediately “ready-for-use” after the package has been opened.
Type:
Grant
Filed:
February 14, 2000
Date of Patent:
February 1, 2005
Assignee:
Astra Tech AB
Inventors:
Anette Israelsson, Jan Utas, Agneta Pettersson