537results about "Muscles" patented technology

A cannula system and method for tissue repair includes a cannula defining a central lumen and a divider removably coupled to the cannula. The divider has a divider shaft to separate the central lumen into at least two discrete working channels.

A weft yarn for an artificial ligament (1), a weft yarn preparation method, and an artificial ligament (1). The artificial ligament (1) is of a round rod structure; a first woven part (102), an in-joint free filament part (103), and a second woven part (104) which are sequentially connected are formed in the round rod structure in the axial direction thereof; the in-joint free filament part (103) comprises a plurality of weft yarns (201), and the weft yarns (201) extend in the axial direction of the round rod structure; and each weft yarn (201) has a fineness of 1000 D-3000 D / 1-100 F, and a mechanical strength of 75-300 N. By increasing the mechanical strength of a single yarn formed in the in-joint free filament part (103) of the artificial ligament (1), the number of yarns in the in-joint free filament part (103) is decreased. The present invention can eliminate a knee joint synovial membrane inflammatory response caused by chippings of the artificial ligament (1) in the reconstruction process of the artificial ligament (1), reduce the degree of contact adhesion between the in-joint free filament part (103) and the tissue, reduce the probability of adhesion, and solve the clinical problems of the inflammatory response and the prolonged surgery time which are caused by difficult removal due to adhesion of the free filaments and the tissue in the revision surgery.

A fluidic artificial muscle actuator may include at least one inflatable bladder defining a first inflatable segment coupled to a first member and to a second member arranged at opposite ends of the first inflatable segment, and a second inflatable segment coupled to a third member and to a fourth member arranged at opposite ends of the second inflatable segment, and an effector coupled to the first inflatable segment and to the second inflatable segment for providing an actuator output. The first inflatable segment is configured to contract in a longitudinal direction with increase in fluid pressure in the first inflatable segment and the second inflatable segment is configured to extend in the longitudinal direction with increase in fluid pressure in the second inflatable segment.

A tool kit for minimally invasive implantation of a tendon fixation implant in the field of arthroscopic human medicine is provided. The tendon fixation implant includes a medial anchor, a lateral anchor, and a base plate. The tool kit includes a medial anchor inserter having a medial anchor drive mandrel and a medial anchor release tube. The medial anchor release tube is designed to receive the medial anchor drive mandrel. The medial anchor drive mandrel is designed both to receive a medial anchor and to introduce the medial anchor into bone by driving it into the latter. The medial anchor drive mandrel has a locking head for locking the medial anchor drive mandrel to the medial anchor release tube. The tool kit includes a base-plate inserter having a handpiece and a base-plate inserter tube designed to receive the base plate of the tendon fixation plate.

Electromechanical implantable device for actuating a patient's eyelid (11), comprising an actuator (2) for activating the opening or closing of the eyelid. The actuator is a dielectric elastomer actuator. The device may comprise a rod (3). The actuator is intended to be implanted under the skin of the patient's forehead, and linked to the eyelid via said rod.

Systems and methods for preparing a ligament graft for a ligament reconstruction procedure are provided. In general, the described techniques utilize a graft holder construct having a graft preparation holder and a suture assembly removably coupled thereto. The graft preparation holder includes an elongate support rail having a longitudinal axis, and a plurality of leaf segments positioned along the longitudinal axis in a spaced relationship and extending laterally from the support rail. The leaf segments can bend to a graft holding configuration so as to define a graft receiving channel configured to receive a graft therethrough. The holder also has at least one support structure configured to mate with the leaf segments to provide stability and rigidity to the segments. The suture assembly has at least one suture tail that can be pulled to affix the suture assembly to a graft without penetrating the graft.

A conductive hydrogel fiber including a hydrogel network formed from a water-soluble hydrogel polymer and conductive fillers dispersed therein is provided. The hydrogel network includes a porous structure having nanofibrillar network walls, the surfaces of which are provided with interconnected crystallized nanofibrils formed by concentration and aggregation of the hydrogel polymer. The conductive hydrogel fiber exhibits high electrical conductivity, excellent tensile strength, large elongation at break, high toughness, and low swelling in water.

Surgical constructs, assemblies, kits and methods of tissue fixation are disclosed. Soft tissue augmentation is conducted with a simple device that allows a surgeon to augment poor tissue in a most expedient and straightforward manner. The device includes an implant in the form of a molded part which has one or more barbs that are angled generally in a retrograde fashion. The implant is affixed to the graft desired to be augmented onto patient's tissue. The surgeon needs only “hook” the distal portion of the graft / implant device into patient's tissue and pull to fix the graft in contact.

The invention discloses a spiral reinforced composite structure artificial ligament with a bundle characteristic and a preparation method thereof, and belongs to the technical field of biomedical materials. The artificial ligament is of a composite structure, is composed of a plurality of units and has a bundle-shaped characteristic. When the artificial ligament is stretched in the axial direction, the negative Poisson's ratio effect is achieved in the direction perpendicular to the axial direction. The structure of each unit is a spiral reinforced knitted structure and is prepared and formed by adopting a textile technology. The artificial ligament is formed by weaving a medical-grade fiber material or a surface-modified fiber material with biocompatibility. The physical characteristics such as the size, the surface roughness, the surface mesh size, the tensile mechanical behavior and the rigidity of the artificial ligament can be regulated and controlled through the design of a textile weave structure and process parameters. The physical performance of the artificial ligament can be regulated and controlled by changing the preparation process, tissue growth is better promoted so as to be better combined with a marrow tract interface, and the nonlinear stretching mechanical behavior of a natural ligament under the stress working condition is simulated.

The present application relates to a kind of composite rotator cuff patch and its preparation method and application, belong to the field of biomaterials technology.The structure layer and biological layer are all biological medical materials, do not need to introduce crosslinking agent, and by the structure layer and biological layer alternate composite design, avoid the problem that traditional synthetic material is not degradable or short degradation period, with controllable degradation period, improve the tear resistance and mechanical support of patch, effectively reduce the risk of inflammatory response, improve the biocompatibility and safety of patch, finally realize the applicability and effect of improving composite rotator cuff patch in clinical application.

A three-dimensional (“3D”) printed orthopedic fixation implant can reduce stress shielding and / or enhance osseointegration. The implant can include: a head defining a proximal end of the implant; a tip defining a distal end of the implant; a core extending from the head to the tip, the core being elongate; and threads extending along at least a portion of the core. One or more functionally graded lattice structures can be propagated longitudinally and / or radially in at least portions of the core. A density of the one or more functionally graded lattice structures can have a varying longitudinal gradient and a varying radial gradient.

An adjustable construct for fixation of a tendon or ligament graft in a tunnel. The construct comprises a flexible, adjustable loop connected to tissue (for example, graft, ligament or tendon). The adjustable loop may be integrated with an additional tissue supporting device (for example, a wedge or a plug). The tissue is secured within a bone socket / tunnel by adjusting the length of the flexible adjustable loop.

Implant delivery systems are disclosed. One implant delivery system includes an outer shaft, an inner shaft movable within the outer shaft, a yoke coupled to the distal end of the inner shaft, and an implant retainer pivotably coupled to the yoke. The implant retainer is configured to retain a sheet-like implant for implantation at a treatment site. Another implant delivery system includes a handle, a delivery sheath extending from the handle, and a delivery shaft extending through the delivery sheath to a frame attachable to a sheet-like implant. A tether extends from the frame within the lumen of the delivery shaft. An actuation member is translatable within a channel of the handle to deploy the frame from the delivery sheath. A tether clamp, positioned within the handle, is manipulatable by the actuation member to selectively unlock the tether within the handle.

A device for interfacing at least one filamentous structure, with real or simulated biological tissue, comprising at least one body (10, 20) for anchoring the filamentous structure, said device being characterized in that said body (10, 20) comprises: at least one capstan (12, 22, 22', 22'), said capstan (12, 22, 22') being configured for wrapping the filamentous structure; at least one porous portion (13, 13', 24) having a trabecular structure (300); and system for regeneration, or repair, or replacement, or simulation of tendon and / or ligamentous tissue comprising said device and at least one filamentous structure comprising a plurality of nanofiber assemblies obtained by electrospinning, said plurality of assemblies being arranged to form a single bundle; said bundle being wrapped to the capstan (12).

A surgical delivery device for delivering a patch to a surgical site, wherein the surgical delivery device comprises: a shaft having a proximal end and a distal end; a deployment subassembly at the shaft distal end, the deployment subassembly having a plurality of connection stations removably couplable to the patch, the deployment subassembly transitionable between a first configuration in which the patch is collapsed and a second configuration in which the patch is expanded; and a handle at the shaft proximal end, the handle including an actuator for effecting movement of the deployment subassembly between the first configuration and the second configuration.

A graft preparation system includes a fixation implant including a strand of suture wrapped around a graft preparation card. A tenaculum includes a first arm having a first tooth and a second arm having a second tooth that are pivotally connected at a pivot. The first arm includes a slot between the first tooth and the pivot that receives the graft preparation card. A tape suture assembly includes a tape suture and a first suture strand. The tape suture is positioned on a graft, and the tape suture is attached to the graft with a stitch formed with the first suture strand.

A method of orthopedic treatment includes steps of: by using a computer aided design (CAD) tool based on profile data that is related to a to-be-treated part of a bone of a patient, obtaining a model of a preliminary instrument that substantially fits the to-be-treated part; by using the CAD tool, obtaining a model of a patient specific instrument (PSI) based on the model of the preliminary instrument; producing the PSI based on the model of the PSI, the PSI being adjustable; performing medical operation on the to-be-treated part, and then attaching the PSI to the to-be-treated part; after attaching the PSI to the to-be-treated part, adjusting the PSI such that the PSI is adapted to real conditions of the to-be-treated part.

This invention discloses a multi-stimulation bidirectional actuation composite film and its preparation method. The multi-stimulation bidirectional actuation composite film comprises upper and lower films; the lower film is cast from a polyvinylidene fluoride solution, and the upper film is prepared by mixing and dissolving graphene and polydimethylsiloxane in a solution, followed by casting. During the preparation process, the two films naturally adhere to form the composite film. The composite film of this invention has advantages such as fast response speed, large deformation range, excellent mechanical properties, low cost, and simple preparation. The actuator prepared from the composite film of this invention has broad applications in the field of biomimetic soft robots.

A packaging system (10b) is provided that includes a packaging body defining a cavity (14b) and a seal (18b) configured to be joined to the packaging body to fluidly seal the cavity. The packaging system may also include at least one tissue cradle (16b) configured to be disposed within the cavity. A cavity having a single size may be configured to accommodate differently sized tissue cradles. In addition to the cavity the packaging system may include one or more additional reservoirs configured for holding a volume of liquid. Such packaging systems may be used in the storage of wet-preserved or dry-preserved human or animal tissue. Also provided are a packaged tissue specimen and a method for packaging tissue.

A cannula system and method for tissue repair includes a cannula defining a central lumen and a divider removably coupled to the cannula. The divider has a divider shaft to separate the central lumen into at least two discrete working channels.

The utility model discloses a micro motor control type artificial stomach tube sphincter which comprises a stomach bag, the top end of the stomach bag is connected with a stomach tube, a bandage is movably installed on the outer surface of the stomach tube, a rope ring groove is formed in the bandage, a tightening rope is movably installed in the rope ring groove, the bandage is made of silica gel, and the tightening rope is connected with the stomach bag. The bandage is spirally wound on the surface of the stomach tube, and the tightening rope is attached to the surface of the stomach tube. Through the cooperation of the tightening rope and the push-pull type electromagnet, when the device is used, the push-pull type electromagnet can be controlled through external remote control to drive the T-shaped connecting rod to retract, so that the two ends of the tightening rope are pulled through the connector, the tightening rope is tightened towards the inner side, and then the stomach tube is extruded to contract towards the inner side; and then the push-pull type electromagnet drives the T-shaped connecting rod to be pushed out, the tightening rope is loosened, then the stomach tube is loosened, relaxation and contraction of the sphincter are achieved, and then the feeding requirement is met.

A transplantable prosthesis for covering a peritoneal defect. The prosthesis includes a body (22) of a transplantable biocompatible material having a first surface (24) and a second surface (26). The first surface is tissue-permeable and the second surface has adhesion resistance. The body includes a grip region adjacent to the outer periphery of the body having tissue grips (28) projecting outwardly away from the second surface. The prosthesis may be disposed between the peritoneum and a separate hernia repair fabric located within the preperitoneal pocket to repair tissue or muscular wall defects such as abdominal wall hernias.

A bone anchor (400), comprising: a bone engaging member (410) comprising: a first proximal bone engaging portion (418) and a second distal bone engaging portion (422); and an expansion feature configured to allow radial expansion of the first bone engaging portion (418) and the second bone engaging portion (422); an expander (700, 800) having: a first proximal expansion portion (710, 810) and a second distal expansion portion (712, 812) the expander (700, 800) being displaceable between a first position relative to the bone engaging member (410) and a second position relative to the bone engaging member (410); a tissue capture feature; wherein the first expansion portion (710, 810) of the expander (700, 800) is configured to expand the first bone engaging portion (418) of the bone engaging member (410) and the second expansion portion (712, 812) of the expander (700, 800) is configured to expand the second bone engaging portion (422) of the bone engaging member (410) when the expander (700, 800) is in the second position, wherein the bone engaging member (410) has two or more types of teeth (428).

A method for attaching tissue to bone includes the steps of inserting a first anchor into bone, advancing a first limb of a first suture from the first anchor through the tissue and a scaffold, and advancing a second limb of the first suture from the first anchor though the tissue. Alternate methods for attaching tissue to bone are also disclosed.

A suture construct includes a single filament of suture forming two cinchable loops from separate finger trap arrangements, with a fixed-length spanning portion extending between fixed portions of the two finger traps. A tail of the suture extends from each finger trap and is slidably disposed therein to cinch the respective loop. The construct can include an anchor slidably coupled to each of the first and second loops. An inserter for the construct includes first and second insertion devices, each having a proximal handle and distal insertion shaft. The two handles couple together to dispose the insertion shafts alongside each other, with a first shaft extending through the second handle shaft and beyond the second shaft. The first handle is coupled proximal to the second such that the first device can be decoupled from the second by removing it proximally, which withdraws the first shaft from the second handle.

An arthroscopic system for the repair of a ruptured ligament is provided. Aspects of the invention include a scaffold surrounding a graft and attached by a suture to an fixation device and inserted into a repair site via arthroscopic equipment. The scaffold, the graft, and suture are further secured near or at the repair site via arthroscopic equipment having an elongated delivery member that contains the scaffold, graft, and suture prior to inserting the scaffold, graft, and suture into the repair site.

The disclosure is directed to a tension indicator (1) suitable to be interconnected to at least one ligament (2, 3) in a patient's body, the tension indicator (1) comprising a deformation zone (4) configured to be deformed in relation to the tension in at least one ligament (2, 3) and a read-out element (5) for determining the tension in at least one ligament.

The invention relates to a composite rotator cuff patch and a preparation method and application thereof, and belongs to the technical field of biological materials. The structural layer and the biological layer are all-biomedical materials, a cross-linking agent does not need to be introduced, the problem that a traditional synthetic material is non-degradable or short in degradation period is solved through the alternate composite design of the structural layer and the biological layer, the degradation period is controllable, the tear resistance and mechanical support of the patch are improved, and the application prospect is wide. The risk of inflammatory reaction is effectively reduced, the biocompatibility and safety of the patch are improved, and finally the applicability and effect of the composite rotator cuff patch in clinical application are improved.