12 results about "Osteotome" patented technology

This invention provides a coronoid process osteotomy knife for the ulna, comprising a first knife blade. The first knife blade includes a first blade body and a first handle. A first intersection point is formed at the connection between the first blade body and the first handle. The right side of the first blade body and the right side of the first handle intersect at the first intersection point, forming an angle α1 of 190-220°. In use, the first knife blade utilizes the right side of the first blade body to avoid obstruction by the protruding portion in the middle of the coronoid fossa, reaching the osteophyte on the coronoid process of the ulna. During the resection, the inner curved surface of the first blade body is used to remove the osteophyte into a smooth arc surface consistent with the arcuate contour of the coronoid process, leaving no step. This invention's coronoid process osteotomy knife for the ulna, by utilizing the right side of the first blade body to avoid obstruction by the wall of the coronoid fossa, reaches the "blind zone"; then, by using the inner curved surface of the first blade body to conform to the original arcuate contour of the coronoid process, it thoroughly removes the osteophyte, achieving complete cleaning of the inner and outer sides of the coronoid process, solving the problem of traditional knife blades being unable to completely remove osteophytes due to angle limitations.

This application relates to the field of medical device technology, specifically to an extramedullary positioning distal femoral osteotomy device for knee replacement, comprising an osteotomy plate, an axial indicator, a rotating component, and a reference plate. The osteotomy plate has a reference end face and an abutment end face, with a cutting suture and pin holes provided on the reference end face. The axial indicator is rotatably mounted on the reference end face; the rotating component is rotatably mounted on the reference end face; the reference plate is slidably mounted on the rotating component, and the reference plate can slide on the rotating component in a direction away from or close to the rotation axis of the rotating component, with the reference plate perpendicular to the reference end face. In this application, the axial indicator determines the direction of the patient's femoral axis, ensuring that the movement of the osteotomy plate is consistent with the direction of the femoral axis, thereby improving the accuracy of the cutting position during surgery. The rotating component and the reference plate allow the surgeon to adjust according to the preoperatively determined angle of the prosthesis articular surface, enabling precise matching of the cutting suture angle with the prosthesis articular surface, further improving the precision of the surgery.

An osteotome with replaceable blades. The osteotome includes a replaceable blade portion and a handle portion. The blade portion is detachably affixed to the handle portion. Replaceable blade portions are affixed to the reusable handle portion. The blade portions have a tool edge portion and blade shaft portion. The blade shaft portion extends between the base and a proximal end having an externally threaded portion. The handle portion has a hand grip portion and a handle shaft portion. A threaded coupler is provided. The proximal end of the blade shaft portion and the distal end of the handle shaft portion include complementary interlocking end pieces, which prevent rotation therebetween. An interior shaft and strike plate in the handle portion assure steel-to-steel contact from the strike plate to the sharp distal end.

The utility model relates to the technical field of bone cutting apparatus, and disclose a tibial plateau bone cutting apparatus, including bone shovel, the top fixed connection of bone shovel has the sleeve rod, the outer surface sliding connection of sleeve rod has the sleeve, the top thread connection of sleeve rod has the connecting rod, the top fixed connection of connecting rod has the top block, the top surface fixed connection of top block has the arc plate, the outer surface of connecting rod is sleeved with spring, the top fixed connection of sleeve has the top plate, the top surface of top plate is connected with the casing through screw, the utility model discloses through the eccentric wheel of frequency conversion motor drive, drive bone shovel vibration cutting osteophyte, compared with traditional bone rongeur manual operation, can quickly remove the redundant osteophyte on tibial plateau, effectively shorten the operation time, reduce patient anaesthesia risk and medical staff work intensity. Moreover, the arc blade of bone shovel bottom end cooperates vibration cutting, can get the regular shape inside tibial plateau, reduces the situation of the influence of subsequent operation because of the osteophyte removal shape is not good.

The utility model relates to medical instrument technical field, specifically disclose a kind of special depth-limiting bone chisel of endoscope channel, comprising: hand-held part;Knocking part;And bone chisel main part;Bone chisel main part one end is bone chisel head, and the other end is set in hand-held part, and the outside of the connection with hand-held part is equipped with the adjusting part of cylindrical shape, the adjusting part outside is sleeved with depth-limiting sleeve;Depth-limiting sleeve, depth-limiting sleeve is connected with the adjusting part outer thread by internal thread, and depth-limiting sleeve is close to bone chisel head end and is equipped with annular groove, and bone chisel head is embedded in annular groove by annular groove sleeve connection depth-limiting shell;Depth-limiting shell, the inside of depth-limiting shell is equipped with the groove that can pass through bone chisel main part, and it is equipped with the outer expansion baffle near bone chisel head, and it is equipped with the convex in annular groove away from bone chisel head end. The special depth-limiting bone chisel of endoscope channel is through the characteristics such as adjustable chisel depth, prevent the protection mechanism of chisel and go deep, easy to operate and durable stable structure, significantly improve the deficiency of traditional depth-limiting bone chisel.

The utility model relates to the technical field of elbow bone cutter, concretely is a combined elbow bone cutter, including the casing, the casing inside swing is provided with the shift control mechanism, the shift control mechanism includes fixed disc, threaded column, movable block, thread groove, clamping plate, fixed block and movable slot. The utility model user can rotate the rotary handle, makes the fixed disc rotate under the traction of movable column, because clamping plate is active and is inserted in the inside of fixed block, so movable block can freely move on threaded column, leads clamping plate to contract inwards, when clamping plate one end is in abutment in the limit groove bottom, can carry out the clamping fixed of support rod, if needing to replace the bone cutter head, the user fixes the fixed part with one hand, and the other hand rotates the bone cutter head and makes it separate from the fixed groove, can complete the combination installation and replacement of bone cutter, the device has the clamping mechanism of rotary type, and the user only needs to complete the clamping fixed of support rod through simple rotation, saves time and labour.

The utility model discloses a kind of split type ultrasonic osteotome suitable for surgical power equipment, it is related to medical equipment technical field;To solve the problem of resource waste and cumbersome operation caused by the incompatibility of ultrasonic host and ultrasonic osteotome power equipment in prior art, the following technical scheme is proposed: the utility model includes tool bit, tool bar, ultrasonic handle, connecting cable, adapter, locking piece, power handle, ultrasonic handle converts high-frequency electric energy into mechanical vibration, and mechanical vibration is transmitted to tool bit, tool bit is arranged at the end of tool bar, the end of tool bar away from tool bit is arranged on ultrasonic handle, one end of ultrasonic handle is connected to adapter by connecting cable, adapter is detachably connected on power handle, adapter and power handle are connected by locking piece, the utility model improves the energy transmission structure and adaptation interface of ultrasonic osteotome, so that it can share the same host with existing surgical power equipment.

This invention relates to the field of dental medical devices and discloses a dental ultrasonic bone scalpel working tip limiting wrench, comprising a wrench locking block, a wrench tightening block, a rubber pad, a tightening screw, and a rotating assembly. When it is necessary to install or remove the working tip, the operator aligns the wrench slot with and fits it onto the wrench part of the bone scalpel working tip. At this time, the clamping slot on the rubber pad is inserted into the working tip. Due to the elasticity of the rubber pad, its clamping slot expands elastically during insertion and generates a radial contraction clamping force, thereby stably and elastically clamping the working tip inside the wrench and preventing the working tip from falling off freely. When the working tip is completely removed from the handle, due to the continuous action of the elastic clamping force of the rubber pad, the working tip is held inside the wrench and will not accidentally slip to the ground or hard surface due to gravity, thereby effectively avoiding deformation or damage to the working tip caused by falling.

A method for separating an implant from a bone, includes interfacing a tool with an implant including a flange, the flange including a proximal surface and a distal surface, the distal surface bearing on or facing the bone, the flange including an aperture defined through the flange; inserting an elongate element through the aperture from the proximal surface to the distal surface and into the bone; and partially separating a bonding interface between the implant and the bone using the elongate element.

The utility model relates to the technical field of medical apparatus and instruments, especially to a compound motion's ultrasonic osteotome and ultrasonic operating handle, including sword stem and the sword head connected in sword stem front end, the sword stem includes the handle section and transition section gradually from back to front, and the transition section includes amplitude section and the extension section connected in amplitude section front end, the sword stem and the sword head form the suction passage of axis extension, the suction passage can be used for connecting negative pressure equipment to enable the front end of sword head to attract medium, the extension section is evenly opened with a plurality of twist grooves on the circumference, the extension direction of twist groove is consistent with the included angle of extension section axis after the outer wall of extension section is unfolded, and its beneficial effect is that under the action of twist groove, the sword stem not only can reciprocate axially after being connected with ultrasonic transducer, but also can twist axially, and further, the cutting efficiency is greatly improved. Through setting the angle as the consistent form, the twist balance and twist amplitude can be optimized, and further, the cutting effect of the ultrasonic osteotome is further improved.

The present application is directed to a Joint Revision Surgery Osteotome Blades and Surgical Chisel Blades which includes a surgical osteotome blade guide block which has a plurality of rearward blade guide slots, a central cavity and a plurality of forward guide slots having a two-way adjustable L-shaped guide plate. The surgical osteotome blade guide block central cavity houses a stem trunnion securing and is secured to the prothesis to be extracted. The guide blade block is secured to the trunnion of the prosthesis to be extracted using a stem trunnion securing member housed within the guide block. Straight, curved, flexible and rigid and compound curved osteotome blades are guided by the blade guide slots to cut the implant free from the bone. The Joint Revision Surgery Osteotome Blades and Surgical Chisel Blades facilitates rapid, efficient and complete removal of an existing prosthesis during joint revision surgery, and significantly increases positive medical outcomes for joint revision procedures.

The utility model relates to the technical field of ultrasonic operating knives, especially to a sawtooth ultrasonic bone knife and an ultrasonic operating handle, which comprise a rod body and a tool bit integrally formed at the head end of the rod body, the rod body comprises, in sequence along the direction from back to front, a base section, a first transition section, an amplitude variation section and a second transition section of an integral structure, the diameter of the first transition section is greater than that of the second transition section; further comprising cutting teeth integrally formed with the tool bit, a plurality of cutting teeth are continuously distributed on at least one edge of the tool bit in the width direction to form a first cutting section; the cutting teeth are symmetrical along the line connecting the tooth tip to the middle of the tooth root, so that the cutting force in the positive direction and the reverse direction can be balanced when the cutting section vibrates axially, and the beneficial effects are that the cutting teeth are symmetrical along the line connecting the tooth tip to the middle of the tooth root, the cutting force in the positive direction and the reverse direction can be balanced when the cutting section vibrates axially, and the cutting consistency of the first cutting section is improved when the ultrasonic bone knife vibrates, and the cutting effect is improved.