Abstract: The invention concerns a medical puncture instrument for the relocation of drains and catheters, in order to initiate and/or channel the fluid in the body, whereby its components are already assembled, so that an immediate usage capable instrument is delivered in a sterile packaging. The puncture instrument consists at least of a puncture tube, a handling medium for maneuvering of puncture tube and a longitudinal movable cylindrical body enclosed in the puncture instrument. In a further arrangement, the puncture instrument consists of a lock chamber for the introducing or rather the suction of the fluid. For the fixation of the cylindrical body in a desired position in the puncture instrument, a braking element can be incorporated. The handling element is open in a section, so that the cylindrical body here lies free and can be suspended.

Abstract: Corpuscles for implantation into or at body tissue have carriers of biologically inert material, and such carriers contain medicine which is distributed therein for release into body tissue upon completion of the implanting operation. The configuration of the carriers departs from a spherical or an exact spheroidal shape. The end sections of the carriers can have conical, frustoconical, semiellipsoidal, or semispherical shapes and can consist of pairs of identical or different segments. The central sections of the carriers can resemble barrels, or their central longitudinal cross sections can have conical, elliptical, straight or other outlines. The carriers have central or substantially central longitudinal passages for a filament which supports a surgically implantable composition constituting a row or file or string of two or more identical and/or different carriers. The transverse cross sections of the carriers can have circular, elliptical, polygonal and/or other outlines.

Abstract: An artificial (namely synthetic) bone material is made up of a strength sustaining first component and of a biointegration promoting second component. The first component is made, for example of a bioceramic material providing a material strength, especially a compression strength, of at least 1000 N/cm.sup.2. The second component is made also of bioceramic material or even of bone tissue or it may contain bone tissue in combination with other biointegration enhancing components. Biointegration is greatly improved if the material of the second component comprises a specific surface of at least 1.5 m.sup.2 /gram. The second component is incorporated in accessible voids such as open cells, pores, bores, holes and/or other cavities of the first component, whereby the first component forms a frame or matrix for the second component and imparts to the artificial bone the required strength prior to, during, and after implantation.

Abstract: A tool having a profile for the forming or shaping of a complementary thread in and/or on a fastener which can be utilized with advantage as a bone screw or another osteosynthetic force transmitting member, instrument or accessory. The thread which is formed by the profile of the tool has two flanks each having a first section adjacent the crest and a second section adjacent the root of the thread. The second sections jointly include or consist of at least four concave portions having different radii of curvature and gradually merging into each other. The first sections make angles of less than 40.degree. with a plane which is normal to the longitudinal axis of the thread. The first and second sections of each flank are separated from each other by an imaginary cylinder having a diameter which matches the pitch diameter of the thread and a longitudinal axis which coincides with or is at least close to the longitudinal axis of the thread.

Abstract: A prosthesis which can be implanted into the cavity of a bone or between spaced apart bones defines a passage with ports for evacuation of air and/or other matter from the cavity or cavities which are to receive bone cement or other cement. The prosthesis is inserted and centered prior to introduction of cement, and its passage or passages are connected to a suction generating device during admission of cement. If necessary, the prosthesis can be confined in a jacket to prevent overheating of adjacent tissue during polymerization of the introduced mass of cement. The passage or passages in the prosthesis can be filled with cement and/or with medications which penetrate into the adjacent tissue subsequent to implantation of the prosthesis.

Abstract: An osteosynthetic member, such as a bone screw, is provided with a weakened zone which breaks in response to the application of excessive bending, shearing and/or other stresses. The location of the weakened zone is selected in such a way that it is spaced apart from a bone into which an externally threaded section of the member extends. This ensures that the protruding part of the externally threaded section can be engaged by pliers, by a screwdriver or another suitable tool to withdraw the externally threaded section from the bone.

Abstract: There is provided set of at least two externally threaded bodies each of which has a cylindrical external surface provided with a screw thread. The screw threads have identical pitches, and the crest diameter or diameters of one or more helices of one of the screw threads is or are larger than the crest diameters of helices of the other screw thread. The externally threaded bodies can constitute screws or taps for use in osteosynthesis. If a screw becomes loose, it is removed and the hole for such screw is tapped with a larger tap prior to insertion of a screw having helices with crest diameters larger than the crest diameters of helices of the removed screw. The core diameters of the screw threads of a set of externally threaded bodies need not be the same.

Abstract: A fastener which can be utilized with advantage as a bone screw or another osteosynthetic force transmitting member, instrument or accessory has a thread with two flanks each having a first section adjacent the crest and a second section adjacent the root of the thread. The second sections jointly include or consist of at least four concave portions having different radii of curvature and gradually merging into each other. The first sections make angles of at least 40.degree. with a plane which is normal to the longitudinal axis of the thread. The first and second sections of each tooth flank are separated from each other by an imaginary cylinder having a diameter which matches the pitch diameter of the thread and a longitudinal axis which coincides with or is at least close to the longitudinal axis of the thread.

Abstract: A self-locking connection between the external thread of a bolt and the internal thread of a nut is established by providing at least one face of the internal and/or external thread with a self-locking portion which is adjacent the root of the respective thread. The self-locking portion has a first facet which makes with the central axis of the respective thread an angle of between 5.degree. and 30.degree., preferably an angle of between 8.degree. and 15.degree., and at least one additional facet which is adjacent the first facet and is inclined relative to the central axis at a greater second angle. The self-locking action is established in that the crest of the other thread is urged toward and is deformed against the self-locking portion of the at least one face in response to adequate axial stressing of the nut and/or the bolt. The polygonal peripheral surface of the nut has an odd number of sections not a single one of which is parallel to any other section.

Abstract: A self-locking connection between a bolt and a nut is obtained by making at least one face of at least one flight of the external thread of the bolt and/or the internal thread of the nut incongruous with the adjacent face of the other thread. This results in a clamping action along a helix at the root and/or at the crest of the other thread. The connection is self-locking in two directions if both faces of one or more flights of one of the threads are incongruous with the adjacent faces of the other thread.

Abstract: An osteosynthetic force transmitting and positioning apparatus has two force transmitting members one of which is slidably telescoped into the other and each of which or at least one of which is connected or is connectable to one or more connecting components for bone screws, bone pins and/or other types of fasteners which secure the connectors to discrete bones, to fragments of bones or to osteosynthetic plates. The connections between the force transmitting members and the connecting components are such that the orientation of the fasteners can be altered in the direction of any one of three axes which are disposed at right angles to each other. Such connections can include fulcra, hinges, pivots, pin-and-hole couplings or others.

Abstract: An osteosynthetic screw for the setting of bones or bone fragments has an osteological thread zone and a handle. Stability at the so-called stress points of the screw is improved and the design of the screw is changed to obtain better contact. Finally, angularly stable attachment to the osteological plate is possible.

Abstract: The invention proposes a surgical aid which contains pharmaceutical active compounds in support materials which permit protracted release of the active compounds, this aid being designed in the form of a flat article provided with free spaces, and, as a rule, the individual free spaces having, at least predominantly, an area of at least 0.1 cm.sup.2.

Abstract: An aspirator for withdrawal of secretions from wounds has an evacuated vessel wherein the subatmospheric pressure prior to admission of secretions into its interior is maintained at a level of between about 0.8 and 1 bar. The vessel carries indicia denoting (e.g., in percent or in milliliters) the known-in-advance maximum quantity if secretions which can be sucked into the vessel by way of a cannula as well as lesser quantities which accumulate in the vessel while the pressure rises above the predetermined level as a result of admission of secretions.

Abstract: The application discloses an operation aspirator with which, without provoking contamination of the aspirator opening, fine-metering of the vacuum that is available at the aspirator opening is possible and actuation of the valve apparatus closing off the suctioning line is simultaneously made easier.

Abstract: An aspiration instrument for the aspiration of liquids in a surgical operation takes the form of an aspiration pipe. This aspiration pipe has a check valve, which may be opened by way of a lever, button or the like and by which the aspiration effect may be shut off when the lever or the like is let go of.

Abstract: The invention relates to a collecting vessel for medical purposes, i.e. medical fluids, which, in one-piece construction, forms a fluid collecting and measuring system and two pouch parts that can be joined together and with which inflow of the fluid, e.g. urine, can simultaneously be checked from the outside.

Abstract: A suction bottle for evacuating secretions from wounds is disclosed. The bottle includes a vacuum indicator arrangement located over a pressure opening 6 in the bottle, a sealing tube 7, a return spring 9, and a graduated scale bearer 10. In response to changes in pressure within the bottle, abutment 8 is caused to travel within graduated scale bearer 10, thus indicating the pressure within the bottle.

Abstract: An aid for osteosynthesis has a bone plate containing a plurality of bores for receiving a carrier material containing an antibiotic. Grooves along the center and sides of the plate may also receive antibiotic carrier material. The outside of the carrier material may be roughened to improve fixation of the bone or tissue. Carrier material free areas may be provided on the plate to permit bending. These may be subsequently covered by caps.