Osteosynthesis material

Zhang, Bo Osteosynthesis material Abstract: In particular, Osteosynthesis material term Osteosynthesis material cord" must be understood in the broadest possible sense, covering any suitable threadlike flexible cord, able to have a braided structure as described above but also a single-thread structure, or able to be a cable.

The method of claim 12 wherein said reinforcement element is in the form of fiber, thread, twist, cord, film, ribbon, or woven fabric. This bar 3, this yoke 4 and this nut 5 are well known elements and are not part of the invention in themselves.

The initial mechanical strength of surgical absorbable osteosynthesis materials has been improved. Intramedullary nail dimensions were mm length and 10mm in diameter. According to the invention, the material comprises stop means 6 able to engage against one of said other members 4, 5 when these other members 4, 5 are engaged on the flexible cord 15these stop means 6 being equipped with anti-reversing means 20 presenting an obstacle to their movement along the flexible cord 15 in the direction moving away from the bone anchoring member 2.

Said instrument can be in the form of a clamp with two pivoting branches, each equipped with a stop means as previously cited; the pivoting of the branches in the direction bringing Osteosynthesis material two stop means closer to each other leads a first of these two stop means to be immobilized relative to the flexible cord and the second stop means to advance along the flexible cord, and the consecutive pivoting of these branches in the direction of the separation of the two stop means leads to immobilizing said second stop means in relation to the flexible cord and allowing said first stop means to advance along the flexible cord.

This value was increased with increase in the value of Ds. It may involve a non-reversible connection Osteosynthesis material than by cutting the flexible cord, in particular a connection by crimping of a wall which may be comprised by the bone anchoring member, or by engagement of the flexible cord through the bone anchoring member and arrangement of a stop means at the end of the flexible cord having gone through this bone anchoring member.

There was a problem providing the content you requested

This material can be applied to manufacture osteosynthesis devices or their components plates, balks, rods, medullary nails, pins, screws or corresponding structures. It is intended to rest against the wall 11being gripped against said wall by the nut 5, intended to be screwed on the slug The Osteosynthesis material thus formed makes it possible to cause said other members to advance along the flexible cord only in the direction coming closer to the bone anchoring member; it thus makes it possible to perform a vertebral osteosynthesis with progressive placement of one or two connecting rods on a series of bone anchoring members connected to a series of vertebrae.

The tensile strength of corresponding non-reinforced rods manufactured from polyglycolide melt was 60 MPa. Zhang, Bo Liao Abstract: Under the pressure the softened or melted surface of fibers, threads or corresponding structures are coalesced together and when the mold is cooled, a self-reinforced composite structure is obtained.

The invention also concerns a vertebral osteosynthesis method using said vertebral osteosynthesis material or said assembly. The sutures were partially fused together and the mold was cooled to room temperature rapidly.

It is natural that Osteosynthesis material self-reinforced absorbable surgical material can include, in addition to the matrix and reinforcement Osteosynthesis material, auxiliary additives, such as colors, powder-like fillers or other additives. Figure 6 shows still another embodiment of the connection of the proximal end of a slug 10 with a cord The material can Osteosynthesis material also at least part of an osteosynthesis implant.

The tensile strength of the corresponding carbon fiber reinforced material manufactured from polyglycolide melt-carbon fiber mixture was MPa. The stop piece 6 is, in the embodiment shown in figure 1made up by a single piece in the form of a sphere, pieced all the way through by a hole allowing the straight engagement of this piece 6 on the cord The present study has investigated plasticity-induced martensitic phase transformation in fatigue of unnotched SUS plates.

Osteosynthesis composite material as claimed in claim 1, characterized in that the reinforcement elements are in the form of fibers, threads, twists, cords, films, ribbons, woven fabrics or corresponding material. In the illustrated example, this flexible cord 15 is in the form of a cord in a textile material, in particular in braided polyester.

Yoshifumi Iwasaki, Yuji Nakasone Abstract: According to the invention, the material comprises stop means able to be engaged on the flexible cord and to bear against one of said other members when these other members are engaged on the flexible cord, these stop means being able to be moved along the flexible cord in the direction of the bone anchoring member and being equipped with anti-reversing means forming an obstacle to their movement along the flexible cord in the direction moving away from this bone anchoring member.

Each mobile jaw can in particular comprise teeth, claws, sharp protrusions or similar, intended to penetrate into the material of the flexible cord when the stop means tend to be moved in the direction of separation from the bone anchoring member, and, in so doing, bringing each mobile jaw into the active position.

The present study has investigated plasticity-induced martensitic phase transformation in fatigue of unnotched SUS plates. Around technical operations are performed in order to make a high-quality metal frame, and there are to operations to make a plastic frame.

Self-reinforced absorbable rods with the shear strength of MPa were obtained. Although the Asian manufacturers of optical frames are prevailing in the world market, a relatively rudimentary trial-and-error method is being used. The shear strength of these self-reinforced absorbable composite rods was MPa.

The following non-limiting examples illustrate the present invention. These advancement means thereby make it possible to advance said other members in the direction coming closer to the bone anchoring member.

For simplification, the parts or elements of one embodiment which are found identically or similarly in another embodiment will be identified by the same numerical references and will not be described again.

Therefore good adhesion between matrix and reinforcement units of different chemical origin is difficult to achieve. On the contrary, with the material according to the invention, all of the lengths of the cords 15 can be put to use to guide the yokes 4 and the nuts 5 toward the slugs 10, the pieces 6 making it possible to gradually bring these yokes 4 and nuts 5 onto these slugs 10, closer and closer, during the correction of the position of the vertebrae According to another possibility, illustrated in figures 8 and 9, the material according to the invention comprises an instrument making it possible to advance a stop piece 6 as shown in figure 1 along the cord The reinforcement embedded in the matrix can be in the form of fibers, threads, cords, twists, films, woven fabrics, ribbons, or corresponding structures.

The osteosynthesis being done on several consecutive vertebraethe operating field is in particular cluttered by the extension rods 5OA given the reduced travel of the proximal slugs 10A. Osteosynthesis is the reduction and internal fixation of a bone fracture with implantable devices that are usually made of metal.

It is a surgical procedure with an open or per cutaneous approach to. The time between insertion and removal of the osteosynthesis material was 71 days, days and days, respectively. The mean time to removal was days. In the eight patients that received fixation with Champy plates, no removal of osteosynthesis material was necessary.

To reach these objectives, the materials used in the manufacture of orthopedic implants must meet standard requirements. These requirements include primarily standard chemical composition, microstructure and macroscopic appearance.

In this paper we present a study to determine the cause of degradation of osteosynthesis material. Osteosynthesis material products are most popular in Domestic Market, South America, and Mid East.

You can ensure product safety by selecting from certified suppliers, including with ISO, with Other, and 82 with ISO certification. The "weakening" of bone theory (if osteosynthesis material and steel screws are left in the body) is based upon that the hardware is taking up long load term, which had been confirmed to not be the case in a number of studies throughout the body.

material for osteosynthesis

Osteosynthesis is reduction and internal fixation of bone fracture among implantable devices that are often made of metal. It is a surgical method with a release or per cutaneous loom to the fractured bone.

Osteosynthesis material
Rated 0/5 based on 13 review
Osteosynthesis Material Failure: Poor Fixation or Material Defect