291 results about "Plantaris tendon" patented technology

A manipulation device includes an appendage extending from a base, the appendage comprising a flexible material having a resting pose and adapted to be deformed into a plurality of different poses, and at least one tendon attached to an end of the appendage and passing through the base or a portion of the appendage between the base and the distal end, such that actuation of the at least one tendon causes deformation of the appendage from the resting pose to a new pose. Systems and methods for fabricating and optimizing a manipulation device are also provided.

The gait assistance mechanism according to one example of the present invention may comprise one or more tendons connecting an upper limb, a trunk, and a lower limb of a wearer and a fixing part fixing the one or more tendons to the body of the wearer, and the one or more tendons may comprise a driving tendon connecting the lower limb and the upper limb on the same side of the wearer.

The invention relates to the technical field of medical instruments, in particular to a tendon suture auxiliary device which comprises a first clamping assembly and a second clamping assembly, the first clamping assembly and the second clamping assembly adopt the same structural design, the first clamping assembly comprises a lower clamping plate and an upper clamping plate, and fixing needles are fixedly arranged on the inner walls of the lower clamping plate and the upper clamping plate; a magnetic buckle protrusion is arranged on the outer wall of the upper clamping plate, a magnetic buckle groove corresponding to the magnetic buckle protrusion in position is fixedly formed in the outer wall of the lower clamping plate, the hinge is fixedly connected with a supporting arm, the supporting arm is movably sleeved with a threaded pull rod, the outer surface of the threaded pull rod is in threaded connection with a magnetic nut, and an arc-shaped handle is fixedly arranged on the outer wall of the upper clamping plate. The telescopic positioner is arranged on the inner wall of the pin sleeve in a sleeved mode, the distance between the first clamping assembly and the near-end tendon and the distance between the second clamping assembly and the far-end tendon are adjusted to be shortened through rotation of the magnetic attraction nut, and the telescopic positioner is arranged to limit the clamping assemblies to ensure good involution of the broken ends of the tendons.

Described herein are rigidizing apparatuses (e.g., devices, system, etc.) and methods of using them that may rigidize over a long length of the device from a highly flexible and maneuverable configuration to a highly rigid configuration, while maintaining a relatively small diameter. In particular, described herein are apparatuses and methods including pressure-compression tendons that may be used in conjunction with a second rigidizing layer to enhance stiffness, particularly at the distal end region.

An Achilles tendon repair device comprises a handle for physician gripping and base having a first set of tendon rods disposed in an arcuate or U-shaped pattern about the base to engage the posterior surface of the tendon and impart a contour, or drape, the tendon in the posterior-anterior plane to increase the surface area for suturing. A second set of suture guide rods extend from the sides of the base and are spaced apart to allow insertion of suture needles along the entire length of the suture guide rods, and at any angle. A suture needle housing guide can be slidingly attached to the suture guide rods and includes sidewalls with predefined suture holes / angles. An adjustable clamping arm can engage the tendon's posterior surface such that the device grasps the tendon on both the anterior and posterior tendon surfaces simultaneously, while increasing posterior-anterior plane surface area to facilitate suturing.

The utility model discloses a tendon rupture auxiliary stitching instrument which comprises a tendon clamping mechanism, a tendon butt joint mechanism and a clamping adjusting mechanism, and the surface of the tendon clamping mechanism is connected with the tendon butt joint mechanism used for being connected with the tendon clamping mechanism. The middle of the tendon clamping mechanism is connected with a clamping adjusting mechanism used for clamping the tendon in an auxiliary mode, the tendon clamping mechanism comprises a first fixing ring, a second fixing ring, a third fixing ring, a fourth fixing ring, an auxiliary suture opening and a combining and fixing assembly, and the second fixing ring is hinged to the bottom face of the first fixing ring. According to the auxiliary suturing instrument for tendon rupture, the tendon clamping mechanism and the tendon butt joint mechanism are matched with each other, after the tendon clamping mechanism clamps and fixes fractured tendons on the two sides, a rack is inserted into the middle of an inserting groove, a clamping block limits the rack, then breakpoints of the fractured tendons on the two sides are folded, and then the tendons on the two sides are sutured. And then, the tendon can be sutured.

Multiple systems are described for repairing or replacing anatomic ligaments and tendons utilizing toothed straps and bony anchors incorporating rotatable discs that lock the straps in an axial fashion. Specialized instrumentation is used to prepare the bone and to insert the anchor into the bone while providing proper orientation of the locking disc for accepting the toothed strap.

Methods and devices for the repair of a torn or injured ligament or tendon are provided. The methods include the use of multiple scaffolds, e.g., beads. The multiple scaffolds may be positioned along a suture or other device such that they are moveable with respect to one another or the injured tissue.

The invention discloses a bioreactor for stretching culture of artificial tendons, and relates to the technical field of bioreactors, the bioreactor comprises an incubator, a supporting plate and a rectangular sliding groove formed in the supporting plate, one side of the incubator is fixedly provided with a rotary swing mechanism, one end of the rotary swing mechanism is connected in series with a plurality of groups of stretching culture modules, and the stretching culture modules are arranged in the rectangular sliding groove. When a strip-shaped toothed plate slides in a reciprocating mode, a push-pull rod on a culture solution balancing mechanism and a piston assembly can be driven to move in a reciprocating mode in a cylinder through a connecting rod piece, and when the piston assembly moves in the cylinder in a reciprocating mode, culture solutions at all positions in a rectangular culture dish can be sucked into the cylinder to be mixed through a liquid suction pipe fitting; then the mixed culture solution in the cylinder can be circularly discharged into each part in the rectangular culture dish through the liquid outlet pipe fitting, so that the hydrodynamic environment in the reactor can be improved, and the influence on the stretching culture effect of the artificial tendon due to non-uniform deposition and distribution of the culture solution can be effectively avoided.

A method of repairing a damaged bone-tendon interface in a subject generally includes contacting the damaged bone-tendon interface with an effective amount of a composition that includes purified exosome product (PEP) and a pharmaceutically acceptable carrier. In one or more embodiments, the damaged bone-tendon interface includes complete separation of tendon from bone and the method further includes surgically reattaching the tendon to the bone. In one or more embodiments, the damaged tendon-bone interface comprises partial separation of tendon from bone and the method includes implanting the PEP composition at a site effective for contacting the PEP composition with the damaged tendon-bone interface.

A system for harvesting a tendon graft is disclosed, the system including a retractor, a guide and at least one harvesting tool. The retractor holds open an anatomic space in a patient above the tendon. The guide assembles with the retractor to orient a guide shaft along the retractor and thereby the anatomic space. A first harvesting tool and the guide include a plurality of surfaces that cooperate with each other to transect the tendon and form at least one side of the tendon graft, the plurality of surfaces cooperating to limit a trajectory and a depth of cut into the tendon and also limiting both ends of the translational extent of the harvesting tool along the tendon. A second harvesting tool may extend along the anatomic space formed by the retractor and form both a posterior cut along the tendon and transect a tendon graft end.

The invention discloses a preparation method of a growth factor gradient bionic scaffold for tendon-bone interface regeneration and repair, and belongs to the technical field of biomedical materials. The composite scaffold is constructed by adopting a coaxial electrospinning and self-assembly technology, and is compounded by a core-shell oriented nanofiber layer and a non-oriented nanofiber layer through a gelatin adhesive to respectively simulate tendon phase and bone phase structures of a tendon-bone interface; a shell layer of the tendon-phase-simulated core-shell oriented nanofiber is a PCL layer containing CTGF, a core layer of the tendon-phase-simulated core-shell oriented nanofiber is a PVA layer containing TGF-beta1, and a bone-phase-simulated non-oriented nanofiber layer is a PCL / Gel co-spun layer containing BMP-2 polylactic acid microspheres and nano-hydroxyapatite. The scaffold can realize secondary controlled release of early-stage release of CTGF, slow release of TGF-beta1 in the middle and later periods and continuous release of BMP-2, and cooperates with a fiber orientation structure to induce graded differentiation of mesenchymal stem cells and promote integrated repair of a tendon-bone interface gradient structure, so that the problems of poor healing of a tendon-bone interface and high repeated fracture rate in a traditional repair method are solved, and the scaffold has good application prospects. The important application value is realized in the field of tendon-bone injury treatment in sports medicine.

The invention discloses a scalpel assembly special for tendon sheath release. The scalpel assembly comprises a grip and a scalpel body. The front end of the grip is rotationally connected with the cutter body; the upper portion of the knife body is provided with a covering end, the lower portion is provided with a tendon end, and the middle of the rear end is provided with a connecting rod rotationally connected with the handle. The front end of the tendon end is fusiform, and a binding surface is arranged on one surface far away from the knife body; the binding face is arranged to be an inwards-concave curved face. In the tendon sheath release operation, the binding face can be tightly attached to the surface of the tendon, the situation that due to the fact that a traditional scalpel is difficult to be tightly attached to the tendon, the tendon is cut by mistake due to slight deviation in the operation process is effectively avoided, the operation risk is greatly reduced, and the occurrence probability of postoperative tendon dysfunction and other serious complications is reduced.

The invention belongs to the technical field of medical instrument evaluation, particularly relates to a tendon cross-sectional area measuring device and a tendon cross-sectional area measuring method, and provides the tendon cross-sectional area measuring device and the tendon cross-sectional area measuring method on the basis of a volumetric method and a die forming technology. The long and thin cylindrical measuring cylinder is used for containing normal saline, the pressure sensor is used for measuring the hydraulic pressure change caused by the fact that the tendon is immersed in the normal saline, then the liquid volume change is obtained, and the average cross sectional area of the tendon under the corresponding displacement is obtained based on the displacement of the tendon immersed in the liquid. Further, the minimum point of the tendon cross section area is accurately measured, and a reference is provided for a later tensile test.

The invention relates to an energy-absorbing bionic lattice structure design method, which belongs to the technical field of bionics, and is characterized in that a bionic tendon wave lattice structure is designed by referring to an ostrich metatarsophalangeal joint tendon collagenous fiber bundle microstructure in nature; the energy absorption characteristic of the structure is analyzed through tests and simulation, and optimal structure parameters are obtained in combination with a genetic algorithm; the superelastic material and the bionic tendon wave lattice structure are selected to be combined, the diversified requirements of different products for mechanical properties can be effectively met, and in multiple application occasions, impact energy can be efficiently dispersed and absorbed, movement impact force can be effectively dispersed, and a high-quality damping effect can be provided.

The invention belongs to the field of ankle assisting and training devices, and particularly discloses a bionic external tendon device and method for ankle cooperative assisting and training, and the bionic external tendon device comprises a front sole sheath, a rear heel sheath, a shank sheath, an external tendon rope group, a limiting mechanism and a power mechanism; one ends of the two first outer tendon ropes are connected with the two sides of the bottom of the front sole bandage respectively, sequentially penetrate through guide holes in the rear sides of the heel protective sleeve and the shank protective sleeve and then are connected with the power mechanism; one end of the second external tendon rope is connected to the top of the front sole bandage, and is connected with the power mechanism after penetrating through a guide hole in the front side of the shank sheath. Multi-dimensional cooperative movement of the foot and the ankle joint and hierarchical control over the plantar tension and the ankle joint auxiliary force can be achieved, the assisting and training effect is improved through cooperative movement of the ankle, the two first outer tendon ropes of the plantar are arranged in a crossed mode, when the first outer tendon ropes are pulled, the foot arch is extruded, and the ankle joint auxiliary force is increased. And the arch training is enhanced.

The invention provides a high-porosity bionic tendon repair patch as well as a preparation method and application thereof. The preparation method comprises the following steps: adding human-derived recombinant collagen into a poly-L-lactic acid solution to prepare an electrospinning solution, carrying out electrostatic spinning, putting into a cross-linking solution, carrying out soaking cross-linking, and finally carrying out freeze forming to obtain the bionic tendon repair patch. A degradable polymer PLLA and a natural high polymer material human-derived recombinant collagen are used for preparing a degradable spinning raw material with high biocompatibility, and the prepared bionic tendon repair patch has good biomechanical properties, large porosity, good biocompatibility, good biocompatibility and good biocompatibility through the cooperation of an electrostatic spinning technology and a controllable freeze-drying process, and can be used for preparing the bionic tendon repair patch for the human-derived recombinant collagen-based bionic tendon repair patch for the human-derived recombinant collagen-based bionic tendon repair patch for the human-derived recombinant collagen-based bionic tendon repair patch for the human-derived recombinant collagen-based bionic tendon repair patch. The bionic tendon transplantation material has excellent water absorption, has a bionic microfiber structure, effectively makes up for the defects of traditional tendon transplantation, and has very wide application prospects.

The invention provides a high-porosity and anti-adhesion tendon repair material, and relates to the field of medical biomaterials.The high-porosity and anti-adhesion tendon repair material is prepared through the following steps that animal tendons are obtained, degreased and rinsed; decellularization and rinsing are carried out; performing disinfection; performing rinsing; stretching and freeze-drying: clamping two ends by using a clamp, stretching and fixing, and freeze-drying to form pores in the tendon; soaking adsorption: taking out the freeze-dried tendon, putting the tendon into a tubular mold, pouring the anti-adhesion hydrogel precursor solution into the tubular mold, and performing soaking treatment for 12-24 hours; and performing irradiation crosslinking: performing irradiation treatment on the tubular mold filled with the tendon and the anti-adhesion hydrogel precursor solution to obtain the tendon repair material. The tendon repair material not only can effectively prevent the tendon from adhering to normal tissues, but also can control the pore size of the tendon, is beneficial to infiltration and proliferation of fibroblasts and tendons, promotes blood vessel ingrowth and metabolite exchange, and provides a good basis for tissue repair and regeneration.

The utility model relates to a novel tendon taking device, and relates to the technical field of medical instruments, the novel tendon taking device comprises a first main body and a second main body which are hinged to each other through a pin, and a locking assembly for preventing the first main body and the second main body from being away from each other, the first main body or the second main body is elastically deformed, so that the first helical teeth and the second helical teeth are mutually buckled; the limiting piece is used for preventing the ends close to the tendon from transversely moving in the axis direction of the pin when the first body and the second body deform. A user enables the first main body and the second main body to get close to each other and fixedly clamp the tendon, and the first helical teeth and the second helical teeth are buckled with each other under the elastic deformation action of the first main body and the second main body, so that the first main body and the second main body are locked; meanwhile, the limiting piece prevents the ends, close to the tendon, of the first main body and the second main body from transversely moving when the first main body and the second main body deform, so that the probability that the tendon is disengaged or damaged in the clamping process of the tendon taking device is reduced.

The invention discloses a dynamic path planning method and system for anterior cruciate ligament tendon dissection, and relates to the technical field of ligament tendon dissection, and the method comprises the following steps: obtaining anatomical structure data of an anterior cruciate ligament tendon and tissue characteristic parameters of a to-be-dissected region; marking key monitoring points in the to-be-stripped area to obtain stripping monitoring points; counting the space distance and the tissue density difference value between the adjacent stripping monitoring points to obtain a to-be-measured space parameter; historical tissue stress distribution characteristics of different anatomical structure types are extracted from historical anterior cruciate ligament tendon dissection operation data, and according to the historical tissue stress distribution characteristics, a dissection path deviation value in the historical operation data and a path correction correlation factor between the to-be-measured spatial parameters are counted; according to the anatomical structure data and the tissue characteristic parameters of the current tendon to be stripped, the effects are that operation errors caused by path deviation are reduced, and the accuracy of operation is improved.

The present disclosure relates to a surgical device configured for the release and resection of harvested tendons that can be used in a variety of orthopedic surgical procedures, such as ACL, PCL, and UCL reconstruction.

The present invention relates to the field of medical device technology, and discloses a tendon anchor implantation system. The tendon anchor implantation system includes a drill rod, an inner core rod, and an implantation rod, wherein the implantation rod is provided with a first guide hole; the tendon anchor is provided with a penetrating second guide hole, the first end of the inner core rod is passed through the first guide hole and the second guide hole, one end of the drill rod is connected to the first end of the inner core rod, and the other end is conical and extends out of the second guide hole; the tendon anchor includes a fixing seat and a nail body that are connected to each other, the implantation rod abuts against the fixing seat, the fixing seat is used to fix the patch, and the side wall of the nail body is provided with a barbed protrusion. Compared with the prior art, the present invention does not need to set a pre-piercing point on the rotator cuff, does not need to pull the lead wire, reduces damage to the rotator cuff, and realizes the fixation of the patch. The tendon anchor can quickly and conveniently complete the implantation process in conjunction with the implanter, thereby improving the efficiency of the operation and shortening the operation time.

A method may comprise applying a magnetic field to an internal region of a tendon; acquiring a set of magnetic measurements at a surface proximal to the internal region; acquiring a set of electrical impedance measurements at the surface; calculating a set of expected filler defect-free impedance values for the surface from the set of magnetic measurements using a kernel; comparing the expected filler defect-free impedance values to the set of electrical impedance measurements; and identifying a filler defect within the tendon based on the comparison.

The present invention provides a pharmaceutical composition, comprising: i) isolated skeletal or tendon stem cells, wherein the skeletal or tendon stem cells are Itm2a-positive; and ii) a pharmaceutically acceptable carrier. The present invention also provides a method for isolating Itm2a-positive skeletal or tendon stem cells and a method for treating a skeletal or tendon injuries or defects using Itm2a-positive skeletal or tendon stem cells.

Bone transplant made of a cortical bone substance having a screw shank and a screw head for introducing a screwing-in torque. Both the screw shank and the screw head are provided with an external thread, in which at least the external thread of the screw shank is a multi-start thread. Due to the design, on the one hand a certain stroke can be achieved with fewer revolutions or in a shorter time, whereby the screwing-in behavior is improved and the tendon tissue is protected. On the other hand, the use of multiple threads provides a high surface area for the tendon tissue to grow on the tendon anchor, which improves fixation of the tendon and increases rotational stability. The bone transplant according to the invention thus ensures good fixation of the tendon and can be implanted quickly.

An anchor system (10) comprises an anchor (16) and a tendon arrangement (18). The anchor (16) has an attaching formation (22) to attach the tendon arrangement (18) to the anchor (16). The tendon arrangement (18) extends from the attaching formation (22) as first and second passes (28, 30) of the tendon arrangement (18). The tendon arrangement (18) has opposite first and second end portions (24A, 26A). The system further includes a joining arrangement (32, 34) to join the first and second end portions (24A, 26A) to each other. The tendon arrangement (18) comprises a looped region (36) through which a securing article (38) can extend. The tendon arrangement (18) extends from the attaching formation (22) to the looped region (36).

A composition and methods of making or use thereof include a plurality of fibers forming a shape for augmenting tendon to bone repair. The physical presence of the plurality of fibers provides initial fixation, while the use of an osteoinductive material provides long term enhancement of bone formation around the site of the tendon to bone repair.

The invention is suitable for the field of sports trauma repair and rehabilitation physical therapy instruments, and provides a real-time image monitoring and regulating system and device in tendon trauma treatment. In the embodiment provided by the invention, the system acquires real-time images in the pulsed electric field tendon functional wound repair and rehabilitation treatment process through the image acquisition module, and then determines a dynamic time evolution curve of the tendon repair and healing process according to the radioactive drug concentration through the image analysis module; and finally, performing high-intensity and low-intensity nanosecond pulse electric fields on target tendon anastomotic stoma and peritendon in different healing states according to the curve so as to realize differential stimulation regulation and control. Therefore, the intelligence and the accuracy of performing differential stimulation treatment on the tendon through the nanosecond pulse electric field are improved.

The present invention provides methods, devices and systems for repairing a torn soft-tissue, such as a tendon, while allowing better contact between the torn soft-tissue and the bone, for a better healing process.

The invention relates to a device and method for detecting the needle and thread connection strength of an animal tendon suture, and belongs to the technical field of detection device.The device for detecting the needle and thread connection strength of the animal tendon suture comprises a supporting rod, a testing rod, a clamping piece, a support and a measuring block, the other end of the supporting rod is hinged to the testing rod, the measuring block is arranged at one end of the testing rod in a sliding mode and can be connected with a suture line, a connecting piece is arranged at the end, away from the measuring block, of the testing rod, the connecting piece is installed on the testing rod and connected with the clamping piece, and the clamping piece is arranged on the connecting piece and can turn over up and down relative to the testing rod. The support is installed on the supporting rod and used for enabling the testing rod to be in a horizontal state. The method has the effect of reducing the detection cost.