16 results about "Tarsal Bone" patented technology

The utility model discloses an expansion type subtalar joint brake which is characterized by comprising an outer nail body and an inner nail body which are matched with each other, the inner nail body is of a circular truncated cone structure, the outer nail body comprises a columnar nail head and a plurality of expansion pieces fixedly connected with the nail head, the expansion pieces are distributed along the circumference to form a cavity, and the cavity is used for containing the inner nail body. And the outer nail body is made of a polymer based on lactic acid. According to the expansion type subtalar joint brake, the inner nail body and the outer nail body are matched, the nail head of the outer nail body is implanted into a tarsal bone tube, fixation can be firmer, and tissue cannot be cut by the outer nail body.

Surgical instruments and methods of minimally invasive surgery are provided. The device may include two proximal handles each sized for a surgeon's hand, the two handles in fixed relative positions, and a distal probe attached to the handles. The probe can include a distal cutting member and contain or receive an imaging device. The system can be used for cutting anatomic members, such as ligaments, during minimally invasive surgical procedures, for example, performing endoscopic ligament release surgery, such as carpal tunnel release, plantar fasciotomy, gastrocnemius release, cubital tunnel release, and tarsal tunnel release surgery, and similar surgical procedures on anatomic members.

A core material with a three-point support structure and tarsal bone correction shape is provided under the body temperature responsive polymer layer to achieve "responsiveness to the soles of each user's feet" and "improved tarsal bone correction effect." [Solution] Insole 1 has a substantially flat core material 3 beneath a body temperature responsive polymer layer 2. The body temperature responsive polymer layer 2 softens and deforms to fit the shape of the sole of the foot due to the user's body temperature, and core material 3 has a three-point support structure 4 and a tarsal bone correction shape 5. Furthermore, core material 3 is made of nylon 6 resin, and body temperature responsive polymer layer 2 has a non-slip portion 6, body temperature responsive polymer layer 2 returns to its initial shape after use, an elastic buffer layer 7 is provided between body temperature responsive polymer layer 2 and core material 3, core material 3 has a pressure dispersion shape, core material 3 has a vibration detection structure, and insole 1 does not have to have a built-in sensor, drive circuit, or drive power source. Insole 1 may also be used in footwear.

A frog jumping imitating device comprises a rack, a front supporting mechanism, a rear jumping mechanism and a power mechanism, and the front supporting mechanism comprises a front leg big arm, a front leg small arm and a front sole; the backward jumping mechanism comprises a thighbone simulating rod piece, a tibiofibula simulating rod piece, a thighbone simulating matching rod piece, a tibiofibula simulating matching rod piece and a tarsal bone simulating rod piece which are hinged to one another, the upper ends of the two thighbone simulating rod pieces are connected through a pull rod, a jumping tension spring is assembled on the pull rod, and the lower end of the tarsal bone simulating rod piece is hinged to a rear sole. A joint tension spring is connected between the lower part of the thighbone-imitating rod piece and the upper part of the thighbone-imitating matching rod piece; the power mechanism comprises a gear motor, an incomplete gear, a matching gear and a belt pulley, and the belt pulley is connected with an inhaul cable which is connected with the pull rod. According to the device, intermittent rotation is provided for the belt pulley through intermittent meshing between the incomplete gear and the matched gear, the backward jumping mechanism is stretched to complete jumping in cooperation with the jumping tension spring, the good obstacle crossing capacity is achieved, operation is stable, transmission force is large, and mechanical abrasion is small.

Devices, systems, and methods for surgical treatment of mid-foot disorders such as osteoarthritis, spacing disorders, or alignment disorders, including mid-foot arthroplasty devices and systems for the 2nd and 3rd tarsometatarsal (TMT) joint, implants for post-osteotomy spacing and realignment, arthroplasty articular implants, dowel grafts for TMT arthrodesis or fusion, dowel grafts for navicular cuneiform (NC) arthrodesis, dowel grafts for intercuneiform arthrodesis, and / or locking dowels for joint fusion.

The utility model belongs to the technical field of medical instruments, and discloses a metatarsal bone fixing device which is used for fixing and repairing a metatarsal bone, a tarsal bone and / or a phalanx after fracture, the metatarsal bone fixing device comprises an intramedullary nail and a fixing mechanism, the intramedullary nail is used for being placed into bone marrow of fracture and can be connected with a guiding and positioning piece, and the fixing mechanism is used for fixing and repairing the metatarsal bone, the tarsal bone and the phalanx. The guiding device is used for guiding the implantation position of the intramedullary nail; the intramedullary nail comprises a near end and a far end, the near end of the intramedullary nail is connected to the near end of the corresponding fracture bone marrow, the far end of the intramedullary nail is connected to the far end of the corresponding fracture bone marrow, and at least one of the near end and the far end of the intramedullary nail is provided with a first low incisura part; the fixing mechanism is used for fixing and pressurizing the intramedullary nail and the bone marrow of the fracture in multiple directions so as to facilitate fusion of the bone marrow of the fracture. According to the metatarsal bone fixing device, the surgical wound surface is reduced, the intramedullary nail can be guided, the implantation stability is improved, meanwhile, the metatarsal bone fixing device is better attached to the bone surface, and the stability of the postoperative healing process is improved.

This invention discloses a shoe last assembly, including a shoe last comprising a front part and a rear part. The front and rear parts of the shoe last form a detachable connection, with the connection point between them defined at a position corresponding to the tarsal bone of the foot. The foremost point along the length direction and the two lateral ends along the width direction of the shoe last are both located at the front part. One of the rear end of the front part and the front end of the rear part of the shoe last has a boss, and the other has a recess. Both the rear end of the front part and the front end of the rear part of the shoe last have contact surfaces. A screw passes between the front and rear parts of the shoe last. This invention's shoe last assembly allows for changing the style and size of the front end of the shoe last by disassembling and replacing the front part. It features a simple connection structure, convenient disassembly and replacement, a small gap at the connection point, and a smoother shoe last surface.

The utility model discloses a hallux valgus correcting device, and belongs to the technical field of correctors. Mainly comprises a foot tarsal bone and a metatarsal bone, an inner cuneiform bone is arranged at the joint of the metatarsal bone and the foot tarsal bone, two cuneiform bone holes are formed in the surface of the cuneiform bone, an artificial ligament is arranged on the surfaces of the cuneiform bone holes, the artificial ligament penetrates through the two cuneiform bone holes, a belt carrier steel plate is arranged at the other end of the metatarsal bone, and the belt carrier steel plate is arranged at the other end of the metatarsal bone. A steel plate hole is formed in the surface of the belt carrier steel plate, the surface of the cuneiform bone hole is in threaded connection with an interface screw, an ankle protection pad is installed on the surface of the ankle, a hook-and-loop fastener is fixedly installed at the joint of the ankle protection pad, a supporting strip is fixedly installed at the lower end of the ankle protection pad, and a toe protection pad is fixedly installed at the front end of the supporting strip. A first retaining ring is fixedly installed at one end of the toe protection pad, and a second retaining ring is fixedly installed at the other end of the toe protection pad. The hallux valgus correction device achieves the purpose of fixing the sole and toes, is good in correction stability, and enables a patient to wear the hallux valgus correction device more comfortably.

The utility model belongs to the technical field of medical instruments, and discloses a metatarsal bone fusion nail. The metatarsal bone fusion nail comprises a bone nail body and a cross nail, one end of the bone nail body is a screwing-in part used for being screwed into a metatarsal bone, the other end of the bone nail body is a fixing part, a matching hole and an injection hole are formed in the fixing part, the injection hole is used for injecting bone cement, and the cross nail is used for fixing the bone nail body. An injection flow channel communicated with the injection hole is formed in the bone nail main body, and an overflow port communicated with the injection flow channel is formed in at least the screwing-in part of the bone nail main body; the cross nail is arranged in the matching hole in a penetrating mode and used for being connected with the metatarsal bone or the tarsal bone. The metatarsal fusion nail can solve the problems that a bone nail is weak in pull-out resistance and prone to displacement, complications are caused, and the risk of a secondary operation is increased.

An insole core material for foot support. On the upper surface of the core material, multiple tarsal support portions are formed by three-dimensional ridges that provide corrective support for the skeletal alignment of the foot, corresponding to the positions and heights of multiple tarsal bones. When the upper, lower, or both surfaces of the core material have following grooves or following ridges that follow the movement between the tarsal support portions, it can flexibly accommodate flexion, internal rotation, and external rotation movements. A protruding structure, functioning as a corrective fulcrum, can be provided at a position corresponding to the lower part of the cuboid bone. On the lower, upper, or both surfaces of the core material, one or more reinforcing grooves can be provided to adjust the balance between the overall rigidity and flexural flexibility of the core material and to distribute pressure on the sole of the foot. Optimal support height is achieved by utilizing a structure extending to the base of the metatarsals and a setting based on a mathematical formula using correction coefficients.

This invention relates to the field of medical device technology, specifically to an osteotomy surgical device, comprising a fixable guide pin, a fixing nut, an osteotomy guide plate, a slotter, an oscillating saw slot, and a retractor. In use, the fixable guide pin is first inserted through the tarsal canal, and the fixing nut is installed on the medial side of the foot. The depth of the entire tarsal canal is read using the first graduation mark on the fixable guide pin. The osteotomy guide plate is placed on the fixable guide pin, and 1.5mm Kirschner wires are inserted into the fixing holes on both sides for auxiliary fixation. Osteotomy is precisely performed with the assistance of the osteotomy guide plate. After osteotomy, the fixable guide pin and osteotomy guide plate are removed. The slotter is inserted into the osteotomy site and its bottom is tapped. The oscillating saw slot is inserted according to the length of the tarsal canal, and the oscillating saw is used. The retractor is inserted, and the handle is used to open the tarsal canal to the required angle, which is read from a graduated slide rail. This allows for precise positioning of the tarsal canal while meeting the osteotomy depth and opening angle requirements.

Devices, systems and methods for surgical treatment of mid-foot disorders such as osteoarthritis, spacing disorders, or alignment disorders, including mid-foot arthroplasty devices and systems for the 2nd and 3rd tarsometatarsal (TMT) joint, implants for post-osteotomy spacing and realignment, arthroplasty articular implants, dowel grafts for TMT arthrodesis or fusion, dowel grafts for navicular cuneiform (NC) arthrodesis, dowel grafts for intercuneiform arthrodesis, and / or locking dowels for joint fusion.

The present application discloses a tarsal sinus stabilizer for talus flipping, comprising a main nail body, the axis of the main nail body forms a cylindrical through cavity, the two ends of the cylindrical through cavity expand outwards to form a first truncated cone cavity and a second truncated cone cavity, and also comprising a first nail body and a second nail body, the first nail body comprises a first truncated cone body and a first screw rod connected to each other, the second nail body comprises a second truncated cone body and a second screw rod connected to each other, the side wall of the first truncated cone body fits the inner wall of the first truncated cone cavity, the side wall of the second truncated cone body fits the inner wall of the second truncated cone cavity, the first screw rod and the second screw rod are respectively inserted from the two ends of the cylindrical through cavity, the second screw rod is inserted into the axial through cavity formed by the first screw rod, and the outer wall of the second screw rod is connected to the inner wall of the axial through cavity by a thread. The present invention expands the main nail body to a desired diameter by continuously tightening the threads of the two screw rods.

The invention provides a bionic frog leg structure based on a multi-connecting-rod mechanism, and belongs to the field of bionic frog leg structures, the bionic frog leg structure comprises two groups of bilaterally symmetrical multi-connecting-rod rear leg mechanisms, each multi-connecting-rod rear leg mechanism comprises a driving connecting rod R1, a frame connecting rod R2, a thighbone-imitating connecting rod R3, a connecting rod R4, a connecting rod R5, a tibiofibula-imitating connecting rod R6, a connecting rod R7, a connecting rod R8, a tarsal bone-imitating connecting rod R9, a connecting rod r6 and a connecting rod r9, one end of the driving connecting rod R1 is rotationally connected to the driving end, the other end of the driving connecting rod R1 is connected to one end of the frame connecting rod R2, the other end of the frame connecting rod R2 is rotationally connected with one end of the thighbone-imitating connecting rod R3, the other end of the thighbone-imitating connecting rod R3 simulates a hip joint, one end of the tibiofibula-imitating connecting rod R6 is rotationally connected to one end of the thighbone-imitating connecting rod R3, and the other end of the tibiofibula-imitating connecting rod R6 is rotationally connected to the other end of the one end of the humanoid tarsal bone connecting rod R9 is rotationally connected with the other end of the humanoid tibiofibula connecting rod R6; the structure is simple, and miniaturization and light weight are achieved.

A technique for correcting a bone deformity, such as a bunion, may be performed using a fulcrum. In some examples, the technique involves inserting a fulcrum between a first metatarsal that is anatomically misaligned with respect to a second metatarsal. The technique further includes preparing an end of the first metatarsal and preparing an end of a medial cuneiform opposing the end of the first metatarsal. In addition, a distal portion of the first metatarsal is moved toward the second metatarsal in a transverse plane, thereby pivoting a proximal portion of the first metatarsal about the fulcrum and reducing an intermetatarsal angle between the first metatarsal and the second metatarsal.

The utility model relates to the technical field of animal experiment auxiliary devices, solves the problem that in the prior art, the animal fixing mode is low in efficiency, and discloses a rat intramuscular injection auxiliary device which comprises a bottom plate, a plurality of fixing assemblies and a plurality of tarsal bone fixing parts. The fixing assembly comprises a base and two fixing frames. The fixing frame is arc-shaped; one end of each fixing frame is connected with one side of the base, and the other end of each fixing frame extends away from the base; a fixing space for wrapping the trunk of the rat is formed between the two fixing frames; the plurality of bases are arranged on the bottom plate at intervals; one fixing assembly and two tarsal bone fixing parts form one group; in each group, the tarsal bone fixing pieces are arranged on the bottom plate at intervals. Through combined use of the multiple fixing assemblies and the tarsal bone fixing part, stable fixing of multiple rats is achieved.