9 results about "Implant surface" patented technology

A device (25) for drilling holes in bone and configured to determine bone screw length, the device (25) including a surgical power drill (2) comprising: a) a housing (12) and; b) a measuring device (1) releasably attached or fixed to the housing (12), wherein the measuring device (1) is configured to measure the distance (x) covered by the housing (12) in the direction of the longitudinal axis (7) and relative to a surface of an implant (26) or a bone during a drilling process, wherein the measuring device (1) comprises a processing unit (14) to record the distance (x) covered with respect to time; the processing unit (14) comprises one or more differentiators to determine at least the first and second derivatives of the distance (x) covered with respect to time; and the processing unit (14) further comprises a peak detector to analyze one or more peaks occurring in the graph of the highest derivative with respect to time, and wherein the measuring device (1) comprises a laser device or an ultrasound position sensor for displacement assessment.

The invention relates to a dental implant comprising an implant surface having at least partially a contact angle of less than 20°, which is at least partially covered by a protective layer comprising a keratin hydrolysate.

The application discloses a multifunctional composite coating for a zinc-based implant, which is prepared on the surface of the zinc-based implant, and is prepared by using poly-tannic acid as a bottom layer and grafting epsilon-polylysine on the bottom layer through a covalent bond; the application also discloses a preparation method of the composite coating, which comprises the following steps: preparing a poly-tannic acid bottom layer on the surface of the zinc implant, and then grafting epsilon-polylysine to obtain a zinc-based implant with the multifunctional composite coating, and the zinc-based implant is applied to the field of implants related to biological and pharmaceutical materials. The multifunctional composite coating can induce platelet adhesion and activation, trigger a blood coagulation cascade reaction, and quickly form a stable blood coagulation layer to provide an ideal microenvironment for bone repair; meanwhile, the introduction of epsilon-polylysine enables the coating to have a strong and long-lasting contact antibacterial capacity, and the two can synergistically promote early osteogenesis; the preparation process is simple, the conditions are mild, the raw materials have good biocompatibility, and the multifunctional composite coating is suitable for surface functionalization modification of various implant instruments such as zinc-based bone nails, bone plates and bone scaffolds.

A system or kit includes a rotating tool and a guide. The rotating tool includes an elongated shaft with at least one cutting edge. The rotating tool is configured to remove bone from a patient. The guide includes a body comprising a contact surface and a guide channel. The contact surface is configured to position the guide relative to a patient or an implant. The guide channel is configured to receive the elongated shaft and to allow the cutting edge to be swept along a path. The path corresponds to a portion of the bone to be removed. A method of removing an implant includes forming an incision in a patient. The method further includes inserting a rotating tool into the incision such that a cutting edge of the rotating tool is adjacent to a surface of the implant. The method further includes sweeping the cutting edge along a first path adjacent to the surface of the implant to remove bone adjacent to the implant.

The utility model discloses a kind of six-leaf spherical bone drill, it is related to medical instrument field, wherein, six-leaf spherical bone drill includes: front end spherical tool bit, middle straight rod body and rear end limiting connection structure composition, wherein, the front end spherical tool bit includes six-leaf helical cutting edge, the structure of helical cutting edge is spherical helix structure;The diameter of the front end spherical tool bit is D1, wherein, 1.60mm≤D1≤4.40mm;The helix angle of six-leaf helical cutting edge set in the front end spherical tool bit is angle1, wherein, 27°≤angle1≤33°;Six-leaf spherical bone drill provided by the utility model is used for the bone in fresh tooth extraction nest, uneven alveolar ridge top to take out bone mud can be used in periodontal surgery to cover exposed tooth root, assist tooth firmness;The bone mud removed can be used in implant surgery to increase, widen in operation area, cover exposed implant surface, improve the survival rate of implant.

This invention belongs to the field of medical implant surface modification technology, specifically disclosing an antibacterial coating for ePTFE implants, its preparation method, and its application. The method includes the following steps: plasma etching of ePTFE material, followed by immersion of the plasma-etched ePTFE material in a conductive organic polymer dispersion to form a conductive coating on the ePTFE material surface; using the ePTFE material with the conductive coating as the working electrode, a platinum mesh as the counter electrode, and an Ag / AgCl electrode as the reference electrode to construct a three-electrode system; and performing an electropolymerization reaction in a working solution containing antibacterial active substances to form an antibacterial active substance layer on the outer layer of the ePTFE material. This invention features a simple and low-cost process, produces a uniform, stable, non-toxic, and environmentally friendly coating with extremely high antibacterial rate and biocompatibility.

This invention belongs to the field of surface modification technology for medical materials, specifically relating to a medical implant with a multifunctional coating and its preparation method. The multifunctional coating comprises, from bottom to top, a SiO2 transition layer, an antibacterial layer, and a superhydrophilic layer. The preparation method involves plasma cleaning of the implant substrate under a protective gas atmosphere; depositing a SiO2 transition layer onto the cleaned implant substrate using a vacuum evaporation process; applying an antibacterial material to the surface of the implant substrate with the SiO2 transition layer to form an antibacterial layer; applying a superhydrophilic material to the implant substrate with the antibacterial layer to form a superhydrophilic layer; and finally, low-temperature curing to obtain the medical implant with the multifunctional coating. This invention solves the technical problems of existing medical implant surface coatings, such as an imbalance between antibacterial properties and biocompatibility, uncontrolled release of heavy metal ions, poor adhesion, and insufficient durability under body fluid environments and disinfection processes.

The present invention relates to an ampoule for implant storage and, more particularly, to an ampoule for implant storage with a function of bidirectional humidity maintenance that can suppress excessive moisture supply from a hydrophilic carrier in the ampoule to the implant surface, thereby solving the problem of the coating solution coming off due to external impacts. The ampoule for implant storage with a function of bidirectional humidity maintenance according to the present invention includes an ampoule container and a separator, which is accommodated in the ampoule container. The separator separates the inside of the ampoule container into a first space and a second space and has at least one through hole that allows moisture to move between the first and second spaces. An implant is accommodated in the first space and has a hydrophilic coating layer formed on at least a portion of the surface thereof. A hydrophilic carrier is accommodated in the second space and supplies moisture to the hydrophilic coating layer formed on the implant surface. Since the hydrophilic coating layer on the implant surface and the hydrophilic carrier contain one or more organic zwitterionic buffering materials having a sulfonic acid group, a moisture balance is maintained therebetween.