388results about "Ligaments" 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 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.

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.

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.

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 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.

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.

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.

A process for producing a multifilament collagen fiber bundle involves treating a multifilament support polymer-collagen fiber bundle having a plurality of monofilaments of collagen supported on a support polymer with a series of liquid media having a decreasing concentration of the support polymer to remove the support polymer from the multifilament support polymer-collagen fiber bundle. The support polymer is more soluble than the collagen in the liquid media and the gradual removal of the support polymer provides enough time for collagen molecules to self-assemble into fibrils. The resulting multifilament collagen fiber bundle has a D-band structure similar to natural collagen but shifted by 1 / 6th of the D-band. The multifilament collagen fiber bundle can be crosslinked with ultraviolet light in the absence of photo-initiator to provide a crosslinked collagen product with superior tensile strength and Young's modulus making the product useful in collagen-based biomaterials for tissue repair and regeneration.

A knotless tensionable fixation system including a base, a locking element, and a lock screw. The system enables a user to achieve complex soft tissue-to-bone or bone-to-bone repair by first placing the base against a first bone segment (or fixation plate or prosthesis) and then provisionally securing multiple tensionable fixation members that may be attached to the same or different tissue or bone to be repaired. Once all tensionable fixation members have been provisionally secured to the base under the desired tension to achieve reduction of the repair, the locking element may be coupled to the base and secured by the lock screw under compression to provide a secondary or final lock simultaneously to all tensionable fixation members to securely lock all tensionable fixation members under tension at the same time and with one single locking element.

The present disclosure relates to a medical felting system (1). The medical felting system comprises a felting device (200) and a power unit (100). The felting device comprises at least one felting needle (203) configured to move back and forth between two end positions. The power unit comprises a battery (155) storing electrical energy, an electric motor (165) and a controller (164). The electric motor is configured to actuate the at least one felting needle. The electric motor is electrically connected to the battery. The controller is configured to control the electric motor and to actuate the motor to drive the felting needle. The felting device and the power unit are separable from each other. The felting system comprises a mechanical coupler (300) operably and releasably connecting the power unit to the felting device. The mechanical coupler transfers rotational motion from the motor to the at least one felting needle.

Implant systems and related methods for joining bone and / or tissue portions is disclosed. The implant systems include a first flexible anchor tube comprising a first annular side wall defining a first internal cavity, a first longitudinal end and a second longitudinal end, and a second flexible anchor tube comprising a second annular side wall defining a second internal cavity, a first longitudinal end and a second longitudinal end. The implant systems also comprise at least one suture that passes through the first and second side walls a plurality of times. The at least one suture extends along a pattern that prevents the second anchor tube from translating along the at least one suture and allows the first anchor tube to translate along the at least one suture toward the second anchor tube when first and second end portions of the at least one suture are tensioned.

The disclosure provides systems, methods, and devices for making attachments to bone. Bone anchor systems use tools that have elongated shafts useful in arthroscopic or keyhole surgeries. In the bone anchor system, a tool is taken to the site once and used to both make the hole into the bone or tissue and simultaneously carry the anchor into the hole that is being made.

The invention relates to a muscle membrane intended to be affixed to a muscle of a human or animal body, the membrane being capable of at least partially surrounding the muscle, the muscle comprising fibres covered with an outer tissue, the positioned membrane having a shape that is identical to that of the muscle. The membrane is characterised in that it exhibits anisotropic behaviour so as to reproduce the mechanical behaviour of the muscle, the membrane comprising: -a matrix designed in a biocompatible material having an elasticity similar to that of the outer tissue of the muscle, -one or more reinforcing strips rigidly attached to the matrix, each strip being designed in a biocompatible material having an elasticity similar to that of the fibres it covers and each strip being oriented according to membrane stiffening requirements and according to the expected muscle correction.

The invention relates to a tendon knitter supporting device and a knitting method with the tendon knitter supporting device, and belongs to the technical field of medical instruments, the tendon knitter supporting device comprises a supporting assembly and a limiting assembly, the supporting assembly comprises a supporting frame, a top plate and a long-strip-shaped supporting body, one end of the supporting body is detachably connected with a fixing base, and the fixing base is detachably connected to the supporting frame; the top plate is detachably connected to the top end of the fixing base, and an insertion gap arranged in the length direction of the supporting body is reserved between the top plate and the supporting body. The limiting assembly comprises a limiting piece and a limiting belt. The limiting piece is detachably connected to the other end of the supporting body and provided with a limiting end. One end of the limiting belt is limited at one end, close to the supporting frame, of the first braided plate, and the other end of the limiting belt is limited at the limiting end of the limiting piece. The insertion gap is formed by the supporting body and the top plate, stable supporting can be provided for the first weaving plate and the second weaving plate, deviation staggered weaving is avoided, and the weaving efficiency is improved.

The invention generally relates to an arrangement for regulated dispensing of suture implant for soft tissue repairs The arrangement includes two-part channel 1 having a first part having an elongated cylindrical sleeve 3 and a second part having an extended lip 5. The extended lip 5 houses one or more suture implants. The elongated cylindrical sleeve 3 is mounted to a detachable head 13 having a slot 15. The two-part channel 1 and the slot 15 accommodate a plunger 17 configured for a horizontal movement. The detachable head 13 further includes one or more stoppers 19 provided at a regular intervals along the slot 15. The arrangement further includes an outer sleeve 13 provided with a plurality of regulating means 25. The regulating means 25 facilitates locking and / or unlocking of the suture 11 while operating the plunger 17 thus enabling regulated dispensing of the suture implant 7.

The described system designed to promote the biological attachment of fibrous connective tissue to a bone implant features a bone implant with a scaffold defining a porous attachment surface, a suction port, and a manifold that distributes a negative pressure gradient across the attachment surface. The system also includes an extracorporeal vacuum pump and a percutaneous suction hose connecting the suction port of the implant to the vacuum pump. The implant is placed in the patient's body with connective tissue applied over the attachment surface, and the suction hose is attached and connected to the vacuum pump. The vacuum pump, operating outside the body, creates a negative pressure gradient over an extended period, promoting the growth of slow growing Sharpey's fibres for superior biological integration. A highly vascularised tissue graft, such as a pedicled muscle flap, may be applied adjacent to the avascular tendon to enhance endogenous growth factor migration.

A cartridge may be secured to or near a bone of a patient, e.g., a tibia, optionally via a securing structure such as a threaded screw. In one aspect, a cartridge includes an electronics assembly, a housing enclosing the electronics assembly, and a cartridge coupling feature configured to couple to the securing structure. The electronics assembly includes at least one sensor and a controller having a joint-specific modules. A joint-specific module is configured to collect kinematic data resulting from movement of a specific joint sensed by the at least one sensor. In another aspect, a cartridge includes an electronics assembly comprising at least one sensor and a housing enclosing the electronics assembly. The cartridge has a form factor that is configured to be at least partially inserted into a receptacle in a bone of a patient.