31 results about "Pullout strength" patented technology

A suture anchor includes a threaded anchor body having a first central bore in communication with a second central bore. The suture anchor includes an internal eyelet formed of a loop disposed at least partially inside the first central bore. The ends extending from the loop are tied together to form at least one knot which is housed in the second central bore provided at the distal end of the anchor body. The knot increases the pullout strength of the suture even in soft bone, provides increased suture fixation, and eliminates the anchor “pull back.”

A suture anchor includes a body having a distal end and a proximal end. Projections in the form of ribs or threads are formed on the body for retaining the anchor in a hole formed in bone. An eyelet formed on the distal end of the body accepts suture. The eyelet preferably is formed by a loop of suture. Where the body of the anchor is formed of a polymer, the suture loop can be formed by insert-molding the suture into the body. Tissue is reattached to bone using the suture anchor by securing a length of suture to the tissue, and threading the length of suture through the eyelet on the distal end of the anchor, leaving lengths of suture extending from either side of the eyelet. Installing the suture anchor into the bone wedges the lengths of suture between the suture anchor and the bone, thereby securing the tissue without the need for tying knots. Pullout strength can be enhanced by twisting the lengths of suture prior to installation of the anchor into the bone.

Absorbable implants for breast surgery that conform to the breast parenchyma and surrounding chest wall have been developed. These implants support newly lifted breast parenchyma, and/or a breast implant. The implants have mechanical properties sufficient to support a reconstructed breast, and allow the in-growth of tissue into the implant as it degrades. The implants have a strength retention profile allowing the support of the breast to be transitioned from the implant to regenerated host tissue, without significant loss of support. Three-dimensional implants for use in minimally invasive mastopexy/breast reconstruction procedures are also described, that confer shape to a patient's breast. These implants are self-reinforced, can be temporarily deformed, implanted in a suitably dissected tissue plane, and resume their preformed three-dimensional shape. The implants are preferably made from poly-4-hydroxybutyrate (P4HB) and copolymers thereof. The implants have suture pullout strengths that can resist the mechanical loads exerted on the reconstructed breast.

A sheet membrane containing a layer of oriented biopolymeric fibers. The membrane has a thickness of 0.1 mm to 3.0 mm, a density of 0.1 g/cm.sup.3 to 1.2 g/cm.sup.3, a hydrothermal shrinkage temperature of 50.degree. C. to 85.degree. C., a suture pullout strength of 0.1 kg to 5 kg, a tensile strength of 10 kg/cm.sup.2 to 150 kg/cm.sup.2, and permeability to molecules having molecular weights of 200 to 300,000 daltons.

A bone anchoring device for securing suture or cable within a bone hole of a bone includes an anchor member and a cable. The anchor member includes engagement ribs and an axial cutout. The axial cutout further includes a cutout surface and at least one pin that extends radially outward from the cutout surface. The cable is secured to the anchor member by penetrating the cable with the pins that extend radially from the axial cutout surface, such that the cable distal end aligns with the anchor distal end and that the cable proximal end extends beyond the anchor proximal end. This results in a bone anchoring device in which failure due to low pullout strength of the cable is greatly minimized or eliminated.

A cell occlusion sheet membrane adapted for repairing a damaged meningeal tissue. The sheet membrane contains a layer of cross-linked, oriented biopolymeric fibers that has a thickness of 0.1 mm to 3.0 mm, a density of 0.1 g/cm³ to 1.2 g/cm³, a hydrothermal shrinkage temperature of 45° C. to 80° C., a suture pullout strength of 0.1 kg to 5 kg, a tensile strength of 10 kg/cm² to 150 kg/cm², and permeability to molecules having molecular weights of 200 to 300,000 daltons. Also disclosed is a method for making the membrane.

The present invention provides an internal thread member and an external thread member that can achieve stable finishing accuracy, can assure a desirable thread overlap, and have sufficient breaking strength and pullout strength. This invention also provides a cutter which can machine internal threads with stable finishing accuracy and can assure improved durability.

The present invention provides a permeable member which can attain both a pullout strength and following property (sealing property) and provides a permeable casing and an electrical component using the permeable member. The present invention includes a permeable film through which a gas passing an opening passes when the permeable film is fixed to the opening of a casing, and a tubular support that supports the permeable film. The support includes a first resin part that contacts the casing with the support fixed to the opening, and a second resin part composed of a material having a higher elastic modulus than that of a material constituting the first resin part, and the first resin part and the second resin part are laminated at least partly in a transverse section of the support.

The invention relates to an artificial turf as well as a gum application process and a production device thereof. The gum application process comprises the following steps of: (1) winding the artificial turf and a base fabric on a drying barrel, transmission rollers and a cooling barrel; (2) spraying gum to the back of the artificial turf; (3) flattening and fixing root parts of grass filaments after heating the drying barrel; and (4) cooling the composited artificial turf through the cooling barrel. The gum application production device comprises a spraying device, a driving device, a control device, a transmission device, the drying barrel and the cooling barrel, wherein the drying barrel is arranged between a composite transmission roller and a first transmission roller, the cooling barrel is arranged between a second transmission roller and a third transmission roller, and a glue spraying device is arranged in front of the drying barrel. The artificial turf comprises a base layer and the grass filaments, wherein the root parts of the grass filaments are fixedly connected with the base layer and the base fabric by using the gum, and the root parts of the grass filaments are of a flat structure. According to the invention, gum consumption is reduced, pullout strength of the grass filaments is increased, drying time is short, production field is reduced, and raw materials and energy sources are saved. The artificial turf provided by the invention has the advantages of high strength, thick gum layer, light weight, low cost, convenience for paving and long service life.

The present invention relates in general to implantable compositions, and method for preparing same, containing a calcium salt-containing component, optionally demineralized bone, a plurality of discrete fibers, optionally a flow additive, and optionally continuous reinforcing fibers or an array of organized fibers in the form of mesh. Advantageously, the discrete fibers have a specific aspect ratio (length/diameter) from about 50:1 to about 1000:1. The addition of a small amount of discrete fibers and/or the continuous reinforcing fibers or fiber mesh can cause drastic increases in certain mechanical properties including flexural strength, flexural strength, flexural toughness, and/or screw pullout strength.

The invention relates to a device that provides enhanced mechanical stabilization, as well as methods for its use. In various embodiments, the device is configured in a manner similar to a conventional screw, but with mechanical elements that afford greater fixation and stability and that lessen the likelihood that the device loosens after insertion into a substrate and/or falls out of the substrate entirely or releases its interaction with the substrate. Moreover, the device may have better pullout strength as compared with conventional screws and screw-type devices used in a range of applications.

A self-drilling anchor for use in a friable material comprises a body having an axis, a flanged rear end, a drilling front end and a generally cylindrical portion therebetween having an outer surface with a thread disposed thereon, wherein the body forks, beginning at a predetermined distance from the flanged rear end, into a first leg and a second leg, the first leg extending forwardly into a drilling tip, wherein the first leg may have a generally rearward facing shoulder angled obtusely outwardly with respect to the axis, wherein the body has an axial bore for receiving an elongate fastener, the axial bore extending substantially through the flanged end and leading to the generally rearward facing shoulder, wherein the anchor is adapted so that the first leg pivots apart from the second leg when the elongate fastener deflects the generally rearward facing shoulder and the predetermined distance is selected to increase pullout strength when the first leg is pivoted apart from the second leg and the anchor is installed in the friable material.

The invention discloses a fracture reduction lifting needle which comprises a needle bar with a tip. The needle bar is provided with a clamping portion, an insertion hole which is matched with the tail of the needle bar is formed in one end of the clamping portion, a handle is arranged at the other end of the clamping portion, threads are arranged at the end, where the tip is arranged, of the needle bar, buckles are arranged in the insertion hole, and a clamp groove which is matched with the buckles is formed in the tail of the needle bar. The cross section of the tip is triangular. The clamping portion comprises a core bar and a sleeve, the insertion hole is formed in the core bar, the sleeve sleeves the core bar, at least two through holes which are perpendicular to the insertion hole are formed in the middle of the core bar, and the buckles are collision beads which are inlaid in the through holes. The fracture reduction lifting needle has the advantages that the tip is prismatic, is high in sharpness and can be driven into the femoral cortical bone of a patient easily, and accordingly the operation time can be saved; a needle head is provided with the threads, so that the fracture reduction lifting needle is high in pullout strength, and is not easy to loosen or fall off during reduction operation.

An apparatus for detecting anchor bolt pullout strength. The apparatus includes circuitry configured to process ultrasonic measurement signals using at least one of a direct, an indirect, and a semi-direct measurement technique. Further, the apparatus comprises a first probe and a second probe connected to the circuitry, and memory for storing data detected by the first and the second probe. The memory is connected to the circuitry and a data connection connected to the circuitry and configured to communicate with an external network. An ultrasonic signal is transmitted by the circuitry through the first probe and rebounded by the second prob. The circuitry detects a time duration to receive the rebounded signal, storing the time duration to the memory, and comparing the time duration to reference measurement data. The reference measurement data may be stored in at least one of the memory and the external network.

The invention belongs to the technical field of carbon fiber product, and especially relates to a preparation method of a carbon fiber connecting ring. The preparation method comprises steps of gluing, winding, solidifying, and demoulding. In the preparation process, an appropriate premixed glue material is adopted, and the solidification temperature and the solidification time are adjusted at the same time so as to provide the obtained carbon fiber connecting ring with excellent comprehensive performance. The tensile modulus is 88Gpa, the compression strength is 212MPa, the average loosening torque is larger than 13.5N*m, the single bolt static load pullout strength is higher than 1t; and static test is carried out after bonding of the carbon fiber connecting ring with a antenna housing after cabin assembling, and it is found that the performance indexes are capable of satisfying requirements on missile total design index requirements.

A coated article is described, including a substrate with a coating composition applied thereon to provide a coated article with a textured surface. In one aspect, the coated article is a steel rebar used to reinforce concrete. The textured surface provides optimal surface roughness and demonstrates superior pullout strength relative to an uncoated standard.

The invention discloses a resin and corundum composite grinding wheel provided with brazed diamond insert pieces and a manufacturing process thereof and belongs to the field of steel grinding. The grinding wheel is a composite grinding wheel combining brazed diamond and a resin grinding wheel. The manufacturing process comprises the following steps that firstly, the brazed diamond insert pieces are manufactured; secondly, a resin mixture is prepared according to the size of the manufacturing grinding wheel, and the insert pieces with the corresponding number are placed into the resin mixture;and thirdly, subsequent grinding wheel manufacturing is conducted. The high pullout strength of a single-layer brazed diamond tool, the high exposed degree and high sharpness of the diamond and the original certain toughness of the resin grinding wheel are combined, multilayer composite grinding of the brazed diamond is achieved, and the defects that the thickness of a work layer of the single-layer brazed diamond tool is limited, and iron is likely to be stuck to grinding steel are remedied; according to the differences of the number of the insert pieces and the placement modes, the working life of the original resin grinding wheel is prolonged through the additionally-arranged brazed diamond insert pieces; and the quality of the grinding surface is improved, and in the aspect of comprehensive effectiveness, environment pollution is reduced.

The invention discloses a threaded type tension nail which comprises a body. A through center hole is formed in the axis of the body, the body comprises a threaded portion and a rod, the threaded portion and the rod are axially integrally formed, a plurality elongated grooves are axially uniformly formed in the outer surface of the rod, the widths of the elongated grooves are gradually increased from the rod to the threaded portion, tips are formed at two ends of each elongated groove, threads with equal crest widths are formed on the outer surface of the threaded portion, the end surface, which is far away from the rod, of the threaded portion is flat, and two V-shaped cutting edges are formed at the front end of each thread. The threaded type tension nail has the advantages that the threaded type tension nail can be smoothly screwed into bones and is good in bone pullout strength and applicable to young patients or patients with good bone quality, and conditions such as nail withdrawal can be prevented.

The invention relates to a high pullout strength building reinforced polyacrylonitrile short-cut fiber, a preparation method and applications thereof. A purpose of the present invention is to mainly solve the problem of poor compressive performance of the fiber in the building reinforced material in the prior art. According to the present invention, the building reinforced polyacrylonitrile short-cut fiber is prepared from polyacrylonitrile-based precursor, wherein the middle of the fiber is a straight section, both ends are coiling sections, the coiling density of the coiling section is 0.1-2/mm, and the total length of the coiling section is 1-10 mm. With the technical scheme, the problem in the prior art is well solved. The high pullout strength building reinforced polyacrylonitrile short-cut fiber of the present invention has good compressive performance, and can be used in the industrial application of building reinforced materials.