Abstract:
The surgical instrument comprises a handle (10), which bears a blade (20) having a scraping edge (21), and a collection chamber (R) of shaved material. In the invention, the collection chamber (R) exhibits a mouth (S) for communication with an external environment, located in proximity of the scraping edge (21), for inlet of the shaved material. The mouth (S) is normally closed in order to prevent passage of material contained in the collection chamber (R). At least a portion (11a) of the instrument is elastically deformable in order for the communication mouth (S) to be opened during a scraping operation by the scraping edge (21). In particular a wall (30) is exhibited, which, together with the handle (10) delimits the collection chamber (R); the wall (30) having an end portion (31) in proximity of the blade (20), which end portion (31) is separate and not constrained to the handle (10), the communication mouth (S) being located at a front end of the end portion (31). A portion (11a) of the handle is, at least in part, elastically deformable in order to distance the end portion (31) of the wall (30) from the handle (10) when the instrument is pressed, with the blade (20), against a bone, and to near the handle (10) when the instrument is not subject to mechanical solicitation.
Abstract:
An apparatus includes one or more die groups which are movable independently of one another, each including a female part having a matrix cavity and a male part destined to penetrate into the cavity such as to define a forming chamber of the product, the cavity configured to contain a batch of material. The apparatus further includes a heating station having a heater to bring the plastic material to the fluid state, and a die group cooling station downstream of the heating station. The die groups are free to be cyclically inserted in the heating station and subsequently transferred to the cooling station. A thrust group is associated to a respective die group and is configured to provide a thrust for penetrating the male part into the cavity during the stage of forming the product, the thrust group being integral with the respective die-group in displacements during the operations performed.
Abstract:
A surgical bone milling instrument, suited to operate in a hole formed in a bone, comprising a milling element (10), with longitudinal axis (A) and with the forward end portion (11) rotating around a longitudinal axis (A), and milling the bone. The instrument comprises a tubular element (30) of circular external cross-section and provided with a thread engaging, by helical coupling, a hole formed in the bone. The milling element (10) is associated with the tubular element (30), arranged so that the forward end portion (11) thereof is located ahead of the tubular element (30) and can rotate around the longitudinal axis (A) thereof and translate axially relative to the tubular element (30). The milling element (10) has a rear portion (14) which passes coaxially through the tubular element (30), while the forward end portion (11) projects beyond the front of the tubular element (30). The milling procedure of a bone cavity can be completed while maintaining control of the position of the device relative to the hole. Furthermore, in each phase in which the milling element is rotated, while the instrument is axially stationary inside the hole, a groove is created on the end of the hole (or an extension of the entire hole) the depth of which is constant and predetermined. Further, by way of axial pressure applied to the milling head by the drive element, a detachment of residual bone wall can be achieved as soon as this has reached a breaking resistance which is lower than a force applied by the drive element.
Abstract:
A device having a protection cap defining a concavity, and a thin sharp-ended tubular stem joined to the cap and projecting into the concavity; the tubular stem being connected to elements for penetration into the human body or into body liquid containers; the device being also suitable for use in combination with sample tubes to be inserted into the concavity in the cap and having their interior chamber under vacuum and closed by a yieldable elastomeric plug able to seal an aperture produced by the tubular stem; the tubular stem being joined at one end to the interior concavity of the cap and constructed of a synthetic resinous material in one piece with the cap.
Abstract:
A surgical bone milling instrument, for operating in a hole formed in a bone, comprising a milling element (10) having a longitudinal axis (A) and a forward portion rotating around an axis (A) for milling bone. The instrument comprises an elongate probe element (20) located internally of and being coaxial with a milling element (10), and sliding longitudinally through the milling element (19), with a forward portion projecting relative to a forward portion of the milling element (10). Means are provided for axially pushing the probe element (20), with the forward portion thereof being made to project beyond the forward portion of the milling element (10). With the invention it is possible to complete the milling procedure of a bone hole, maintaining control of the position of the device relative to the hole. The action of the probe element enables an operator to perceive, also visually, the moment in which the milling head of the instrument reaches the end of a previously-formed hole, or the end of the cavity excavated by the milling head. Operations of further axial advance of the milling head can be monitored with the probe element. Furthermore, by way of axial pressure applied to the probe element, the detachment of the residual bone wall can be achieved as soon as this has reached a breaking resistance lower than the force applied by the probe element.
Abstract:
A method for realising thermoplastic products, comprising: use of a granular material comprising granules of thermoplastic polymers; inserting a dose (M) of the granular material internally of the chamber (11) of a mold (10); compression of the dose (M) of granular material contained in a chamber (11) of the mold (10); heating an internal surface of the chamber (11) of the mold (10) during the compression up to producing a softening of the thermoplastic granules at least of a most external layer of the dose (M) of granular material compressed in the chamber (11); before the stage of compression and heating, the method includes covering at least a portion of an external surface of the dose (M) of granular material with an opaque film, which film comprises at least an opaque portion such as visually to hide the material covered thereby.
Abstract:
An apparatus includes one or more die groups which are movable independently of one another, each including a female part having a matrix cavity and a male part destined to penetrate into the cavity such as to define a forming chamber of the product, the cavity configured to contain a batch of material. The apparatus further includes a heating station having a heater to bring the plastic material to the fluid state, and a die group cooling station downstream of the heating station. The die groups are free to be cyclically inserted in the heating station and subsequently transferred to the cooling station. A thrust group is associated to a respective die group and is configured to provide a thrust for penetrating the male part into the cavity during the stage of forming the product, the thrust group being integral with the respective die-group in displacements during the operations performed.
Abstract:
A device for withdrawing flakes or shavings from a donor bone by scraping, comprising an internally hollow handle composed of a hollow body with a cavity and of a slidable closure, rendering the cavity accessible, respectively. The scraper is positioned at the front end of the slidable closure and has a gap for the passage of bone flakes or shavings into the cavity. The scraper also comprises a blade positioned at the front end of the slidable plate, and has an active surface perpendicular or nearly perpendicular to the longitudinal axis of the front portion of the handle. The slidable closure comprises an upper plate, positioned at the upper side of the hollow body to close the cavity and slidable on this latter portion, its front portion not joined to the hollow body and being elastically deformable to move away from the front edge of this latter portion when under load.
Abstract:
A protection device for medical needles connected to a portion of tube comprises: a protection casing (20) arranged to enclose and cover the needle after use, it being initially applied in a position to the rear of the point (11) of the needle; a front end (25) facing the point of the needle, to be rested against a foreign body (D3) for reaction in extracting the needle from the patient's body; means (30) for securing the device to the tube (15); and thrust means (21, 22) which when operated by the operator's finger (D1, D2) increase the distance between the securing means (30) and said front end (25) in order to cause the needle (10) to move towards the protection casing (20) until it lies inside the interior of this latter (20). During the extraction of the needle (10) from the patient's body (P), the device (1) is rigidly secured to the tube (15) in proximity to the needle (10), and the operator, by operating on the device, is able to direct the needle (10) as he wishes, to achieve its correct extraction.