193 results about "Plantaris tendon" patented technology

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.

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.

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.

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 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.

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 relates to the technical field of medical devices, and in particular to a tendon harvesting device. The tendon harvesting device comprises two tendon harvesting parts, both of which comprise an extension rod, a cylinder and a handle, the cylinder and the handle being arranged at both ends of the extension rod, the two ends of the cylinder being open, an opening being arranged on one side wall of the cylinder, the opening penetrating the wall along the thickness direction of the wall in which it is located to communicate with the inner cavity of the cylinder, and penetrating the wall in the length direction of the cylinder. The outer contour size of the cylinder of one of the two tendon harvesting parts is smaller than the inner cavity size of the cylinder of the other tendon harvesting part, so that the two cylinders can be sleeved together, and the openings on the two cylinders can be staggered. Closed-mouth tendon harvesting can be adopted while retaining the tendon bone end attachment point, reducing the risk of tendon rupture and damage to normal tissue during tendon harvesting. The device is simple to operate, easy to assemble and use, can reduce the difficulty of work, save working time, and has a simple structure, which is convenient for postoperative cleaning and disinfection.

The utility model discloses a positioning cone, which relates to the field of surgical instruments and comprises a positioning rod, and a knocking mechanism is arranged at the top of the positioning rod and used for knocking the positioning rod to enable the lower end of the positioning rod to generate indentations on the bone surface of a patient. The lower end of the positioning rod is a spherical surface, a guide groove is formed in the positioning rod and used for inserting tendon lines, and a strip-shaped seam is formed in the bottom of the positioning rod and communicated with the guide groove. The device has the beneficial effects that the optimal pulling direction and the optimal anchoring point of the tendon line can be explored and pre-determined through the matching of the positioning rod and the guide groove, after the optimal anchoring point is found, the positioning rod is knocked through the knocking mechanism, so that the positioning rod generates an indentation on the bone surface of a patient, and then a threaded hole is formed in the indentation by using an electric drill; finally, the tendon lines are fixed in the threaded holes through the outer row nails, so that the accuracy of nail placement points can be improved, and the operation effect is improved.

Disclosed is a tendon-sheath driving apparatus. A tendon-sheath driving apparatus according to an embodiment of the disclosure includes: a sheath having a predetermined length, being flexible and having a hollow shape; a tendon placed inside a hollow of the sheath; a rod coupled to an outer surface of a first side of the tendon, and having higher rigidity than the sheath; and a pipe coupled to an outer surface of a first side of the sheath, and having higher rigidity than the sheath, wherein the tendon is moved through the sheath and the pipe as the rod is moved being guided by the pipe while a portion of the rod is placed inside the pipe.

A tendon repair implant and related surgical instruments are disclosed. The tendon repair implant has an elongated substrate with a convex side and a concave side with a plurality of spikes protruding from the concave side at an angle that optimally retains a. tendon to the bone that the tendon repair implant is subsequently attached to. A surgical retainer for the tendon repair implant is also provided that releasably retains the tendon repair implant during surgery and implantation, A drill guide instrument for the tendon repair implant Is also provided that allows the surgeon to precisely place fastening holes in the bone prior to implantation of the tendon repair implant.

The utility model discloses a tendon repair material decellularization device which comprises a fixed top plate, the lower surface of the fixed top plate is fixedly connected with a supporting rod, the lower surface of the supporting rod is fixedly connected with a bottom plate, the upper surface of the bottom plate is fixedly connected with a protection box body, a rotating round block is arranged in the protection box body, and the rotating round block is fixedly connected with the bottom plate. A circular block groove is formed in the upper surface of the rotating circular block, an interaction container is arranged on the surface of the circular block groove, a limiting circular plate is arranged over the rotating circular block, and an electric push rod is fixedly connected to the lower surface of the fixed top plate. Through the structure, the limiting circular plate, the rotating circular block and the interaction container are arranged, the limiting circular plate can be moved to extrude and limit the interaction container on the rotating circular block, and the rotating circular block is rotated to drive the interaction container to quickly rotate, so that tendon decellularization in the interaction container is in full contact with a decellularization solution, and the decellularization efficiency is effectively improved.

Exemplary systems and methods encompass suture knot tools and suture knot tools pre-loaded with sutures for use in tendon repair and other surgical procedures. Related methods may include forming a nail knot between a suture and a tissue of a patient during a surgical procedure by drawing tissue into a port sleeve of an arthroscopic system, moving the port sleeve relative to a free end portion of the tissue and a nail knot cinch of a suture, to allow the nail knot cinch of the suture to contact the free end portion of the tissue; and tightening the nail knot cinch of the suture about the free end portion of the tissue, so as to form the nail knot with the suture and the tissue.

The utility model provides a novel tendon suturing instrument which comprises a clamping head, a sliding rod and a connecting rod, the clamping head is used for clamping a broken end of a tendon and is also used for needle suturing, the sliding rod is used for enabling the clamping head to be always in a parallel and aligned state in the clamping process, and stable contact of the clamping head and reliable alignment of needle holes in the two sides are ensured; the lock catch is arranged on the connecting rod to lock the clamping state, so that the suture operation of the broken end of the tendon is facilitated; the inner side surface of the clamping head is provided with symmetrically and uniformly distributed conical spines which are used for quickly clamping the surface of the smooth tendon; when the novel tendon suturing instrument is used for suturing tendons, the suturing effect does not depend on experience of operators, the requirement for early rehabilitation of patients can be met, operation is easy, and suturing efficiency is high.