47 results about "Tibia osteotomy" patented technology

The invention relates to a proximal tibia osteotomy device. The device includes a connecting rod with a pointer mounted on a condyle-holding device connecting rod, a tibia osteotomy guide plate mounted on the connecting rod with the pointer, and two osteotomy thickness restrictors mounted on the tibia osteotomy guide plate, the tibia osteotomy guide plate comprises a tibial fixing plate matching with the curvature of the tibia and a connecting plate fixed on the tibial fixing plate, the connecting plate and the pointer end of the connecting rod with the pointer are connected by a pressure screw so as to enable the connecting plate to rotate relative to the connecting rod with the pointer, the tibia fixing plate is provided with an osteotomy saw blade guiding groove, positioning circular holes and nail holes, and the two positioning circular holes are formed in the tibia fixing plate with central symmetry along the center line of the long side of the osteotomy saw blade guiding groove.The device is convenient to adjust, and can determine and limit the thickness of the osteotomy in the vertical direction when the tibia osteotomy guide plate is varus. The osteotomy angle is the physiological varus and valgus angle of the patient, and the device realizes the dynamic alignment of the knee arthroplasty, and facilitates rapid recovery of the patient in order to improve the satisfaction for the knee joint activity of the patient after the replacement.

The invention relates to a tibia osteotomy guider, which belongs to the technical field of orthopedic medical instruments and comprises an osteotomy guide part, a driving component for driving the osteotomy guide part to move and a retroversion adjusting component for adjusting a tibia retroversion angle. The osteotomy guiding piece comprises an arc-shaped plate and a fixing plate, and the arc-shaped plate and the fixing plate are perpendicularly arranged and fixedly connected. The arc-shaped plate is provided with a transverse osteotomy guide groove extending in the length direction of the arc-shaped plate, and the transverse osteotomy guide groove penetrates through the two sides of the arc-shaped plate. A longitudinal osteotomy guide groove is formed in the fixing plate and penetrates through the two sides of the fixing plate. The tibia osteotomy guider has the effects of quickly adjusting the osteotomy position and accurately adjusting the retroverted angle during knee joint unicompartmental knee arthroplasty and facilitating a doctor to quickly and accurately cut off a tibia lesion part, the success rate of an operation is increased, the pain of a patient is reduced, and the satisfaction degree of the patient is guaranteed.

The invention provides a tibia guide plate for total knee arthroplasty and a use method thereof. The tibia guide plate for total knee arthroplasty comprises a tibia guide plate body, a tibia osteotomy groove is formed in the first side of the tibia guide plate body, the tibia osteotomy groove penetrates through one end of the tibia guide plate body, and a sickle blade is inserted into the tibia osteotomy groove; a fitting groove is formed in the second side of the tibia guide plate body; and a force line rod fixing plate parallel to the tibia osteotomy groove is arranged at one end of the tibia guide plate body, and a force line rod inserting hole capable of allowing a force line rod to be inserted is formed in the end, away from the tibia guide plate body, of the force line rod fixing plate. By arranging the fitting groove, alignment fitting with the front inner side of the tibia is achieved, accurate positioning assembly of the tibia guide plate and the tibia is guaranteed, the tibia osteotomy groove is aligned with the tibia osteotomy face, the sickle blade is inserted into the tibia osteotomy groove, the tibia osteotomy amount is accurately verified, and accurate positioning of osteotomy of an operation is guaranteed; and the safety and success rate of a sugery are improved, and the tibia guide plate is simple in structure, convenient to operate and accurate in positioning.

The invention relates to a unicondylar osteotomy guide plate. The unicondylar osteotomy guide plate is designed to match a cutting tool to achieve unicondylar quantitative osteotomy of a knee joint. The unicondylar osteotomy guide plate comprises a thighbone drilling guide plate and a tibia osteotomy guide plate. The thighbone drilling guide plate is provided with a femoral condyle far-end positioning surface, an intercondylar fossa positioning surface and a femoral condyle preartis positioning surface which are designed in a customized mode through CT scanning reconstruction and attached to the femoral condyle far-end, the intercondylar fossa and the femoral condyle preartis respectively. The tibia osteotomy guide plate is provided with a tibial plateau positioning surface which is designed in a customized mode through CT scanning reconstruction and attached to the front side face of a tibial plateau, a longitudinal osteotomy guide groove which is suitable for limiting the cutting tool in a longitudinal osteotomy plane longitudinally extending along the tibia, and a horizontal osteotomy limiting groove which is suitable for limiting the cutting tool in a horizontal osteotomy planewhich transversely extends along the tibia. The invention further relates to a positioning method of the unicondylar osteotomy guide plate.

The invention provides a tibia osteotomy extramedullary and intramedullary multifunctional positioning system. The tibia osteotomy extramedullary and intramedullary multifunctional positioning systemcomprises a main body mechanism, wherein an ankle holding device is arranged at the bottom of the main body mechanism, an ankle joint can be held by the ankle holding device, an extramedullary positioning mechanism capable of moving and rotating in the axial direction of the main body mechanism is arranged on the main body mechanism, and the extramedullary positioning mechanism can be positioned on osteotomy extramedullary parts. An intramedullary positioning mechanism capable of moving in the radial direction and rotating in the axial direction of the main body mechanism is arranged on the main body mechanism and can be positioned in osteotomy intramedullary parts. The intramedullary positioning mechanism and the extramedullary positioning mechanism are integrated on the main body mechanism to form a set of positioning system, during tibia osteotomy positioning, intramedullary measurement and extramedullary measurement can be realized only by utilizing the positioning system disclosedby the embodiment, other tools do not need to be replaced, the operation is simple, the surgery time is shortened, the surgery precision and the surgery completion effect are improved, and the positioning is accurate.

The invention discloses a gap balance measurer, which comprises a femur spreading plate and a tibia spreading plate, wherein a femur osteotomy reference plate is arranged at one end of the femur spreading plate; a tibia osteotomy reference plate is arranged at one end of the tibia spreading plate; an indication surface plate is arranged at the end, which is far away from the femur osteotomy reference plate, of the femur spreading plate; a gap between the femur spreading plate and the tibia spreading plate can be adjusted through a gap adjusting mechanism; a locking mechanism is arranged on one side, which is far away from the femur osteotomy reference plate, of the tibia spreading plate; a balance angle indicating mechanism is arranged between the femur osteotomy reference plate and the indication surface plate; a gap indicating mechanism is arranged on one side of the indication surface plate; and a tension indication mechanism is also arranged on one side of the indication surface plate. According to the gap balance measurer disclosed by the invention, whether the balance of soft tissues at the knee joint is met in an osteotomy process or not can be verified in a plurality of steps in a knee joint operation process, the balance state of the soft tissues is quantified, and a doctor is assisted in finding and placing the most accurate knee joint prosthesis.

The invention discloses an adjustable tibia probe. The adjustable tibia probe comprises a vertical rod, a rotating rod is arranged at the upper end of the vertical rod, a sleeve is arranged outside the rotating rod, a probe is arranged in the middle of the vertical rod, a guide rod is arranged at the lower end of the vertical rod, a height adjusting mechanism is arranged in the middle of the rotating rod, a prompting mechanism is arranged at the lower end of the rotating rod, and a connecting mechanism is arranged on one side of the guide rod; the height adjusting mechanism can accurately adjust the height of the probe, the prompting mechanism makes a sound every time when the probe is adjusted by 1 mm, a doctor can conveniently and accurately judge the adjusting height of the probe, the measuring precision is improved, the connecting mechanism can be very conveniently connected with a tibia osteotomy module, and the operation time is shortened.

The invention relates to the field of medical instruments, and particularly relates to a construction method of a high tibial osteotomy guide plate model. The construction method of the high tibial osteotomy guide plate model comprises the steps that a three-dimensional tibia model is obtained; the upper and lower boundary interfaces of the guide plate are obtained; a rotating reference shaft is obtained; the inner and outer side boundaries of the defined guide plate area are formed with the rotating reference shaft acting as the axis; the defined guide plate area is formed; the point set of the defined guide plate area is obtained; a guide plate initial surface is obtained through fitting; a guide plate body model is constructed; multiple transverse osteotomy guide holes are constructed;and multiple ascending osteotomy guide holes are constructed. According to the high tibial osteotomy guide plate and the design method thereof, the accuracy of tibia osteotomy can be effectively enhanced, and the effects of reducing the operation time, reducing the radiation dose to the doctor and the patient and ensuring accurate implementation of preoperative planning of osteotomy can be realized.

The invention discloses a tibia osteotomy positioning system and an ankle mortise working platform and an osteotomy plate fixing platform. The osteotomy plate fixing platform comprises an osteotomy working platform, an osteotomy plate and a laser device, wherein an adjustable angle is formed between the osteotomy plate and the osteotomy working platform, the laser device is arranged on the lower surface of the osteotomy working platform, and the laser device is a laser transmitter or a laser rangefinder. Laser alignment principle and a beam splitter prism are adopted to determine a reclining angle between the working planes of the osteotomy plate and an ankle holding device. The tibia osteotomy positioning system and the osteotomy plate fixing platform and the ankle mortise working platform improve alignment accuracy, simplify operation, improve operation efficiency, and reduce burden of doctors and patients.

The invention provides an integrated primary ankle joint tibial plateau prosthesis, which comprises a tibia support body, wherein a clamping groove matched with a tibia liner is formed in the tibia support body; a hollow cylinder used for being implanted into a tibia osteotomy position and fixing the tibia osteotomy position; a connecting piece the two ends of which are connected with the tibia support body and the hollow cylinder respectively, so that the connecting piece and the hollow cylinder are implanted into the tibia osteotomy; wherein the hollow cylinder is arranged along the length direction of the tibia support body; the tibia support body, the connecting piece and the hollow cylinder are integrally formed. The prosthesis has the advantages that the operation of mounting the tibia handle in an operation is reduced, the operation steps are simplified, the operation time is shortened, and the operation experience is improved.

The invention discloses a fixing and supporting piece for tibia osteotomy, the fixing and supporting piece for tibia osteotomy can fill a gap appearing at a tibia cut-off position, specifically, a fixing steel plate is fixed to a tibia firstly, then a first supporting block is embedded into the gap appearing at the tibia cut-off position, and a second supporting block is embedded into the gap appearing at the tibia cut-off position; then, a second wedge-shaped block can be driven to slide by rotating a first rotating rod, then a first wedge-shaped block is pushed to ascend and descend, an ejector rod is pushed, then a second supporting plate is driven to move in the direction away from a first supporting block, and therefore the purpose of expanding the thickness of the first supporting block is achieved, that is, the first supporting block can support a larger gap; therefore, the osteotomy support is suitable for osteotomy gaps of different sizes and plays a better role in supporting the tibia. By filling the gap at the tibia cut-off position, the overall strength of the tibia is guaranteed, and complications such as fracture of the osteotomy hinge, postoperative fixing angle loss and non-healing at the cut-off position are avoided.

The invention relates to the technical field of medical instruments, in particular to a proximal tibia auxiliary osteotomy device. The device comprises a fine adjustment assembly mounted at one end, away from an ankle holding device, of a vertical line rod, the fine adjustment assembly comprises a mounting column fixedly connected to one end of the vertical line rod, an adjusting button rotationally arranged on the mounting column and a square fine adjustment rod arranged on the mounting column, the mounting column and the adjusting button are both coaxially arranged with the vertical line rod, a mounting groove is formed in the mounting column, the adjusting button is rotationally arranged in the mounting groove, a limiting groove which communicates with the mounting groove is formed in one end, away from the vertical line rod, of the mounting column, the fine adjustment rod is matched in the limiting groove in a sliding mode, a screw fixedly connected with one end of the fine adjustment rod is arranged inside the mounting column, and the screw penetrates through a rotary knob and is in threaded fit with the rotary knob. The device has the effects that the tibia osteotomy amount is improved by adjusting the fine adjustment assembly and a tibia fixing plate, and the problem that a retroversion angle of an osteotomy module cannot be adjusted is solved.

The invention discloses a tibia osteotomy positioning device for knee joint replacement. The positioning device comprises an L-shaped handle and an osteotomy guide plate; the L-shaped handle comprisesa head part and a handheld part; the head of the L-shaped handle comprises a first connecting part and a first laser; the osteotomy guide plate comprises a second connecting part and an osteotomy positioning part; the first connecting part is matched with the second connecting part; the handheld part is provided with a second laser; and a laser beam emitted by the first laser is perpendicular toa laser beam emitted by the second laser. The tibia osteotomy positioning device is good in positioning effect, easy to operate, low in cost and easy to popularize and use on a large scale.

The invention discloses a tibia osteotomy tool system. The tibia osteotomy tool system comprises a wing-shaped osteotome, wherein an osteotomy guider is arranged at the lower end of the wing-shaped osteotome, and a tibia platform test mold is arranged at the lower end of the osteotomy guider; the wing-shaped osteotome comprises a guide rod, wing-shaped osteotome bodies, a lock catch and a spring,wherein the wing-shaped osteotome bodies are located in the middle of the guide rod; and the lock catch is located at the upper part of the guide rod, the spring is located at the position, corresponding to the lock catch, in the guide rod, two cutting edges are arranged on one side, away from the guide rod, of each wing-shaped osteotome body, and a groove is formed between every two cutting edges. After the wing-shaped osteotome completes osteotomy through the osteotomy guider, the osteotomy guider can be integrally brought out, and operation steps are simplified; the number of the cutting edges is increased, besides, each groove is additionally formed between every two cutting edges, and bone fractures during osteotomy can be avoided under the condition that sharpness of the cutting edges is guaranteed; and in addition, arranged fixing nails can fix the osteotomy guider and the tibia platform test mold to the tibia bone surface together, and instrument displacement during osteotomy is prevented.

The invention discloses a knee joint gap measuring method and device, terminal equipment and a readable storage medium, and the method comprises the steps: determining a real-time target pose relationship between a to-be-measured femur osteotomy plane and a tibia osteotomy plane according to a pose relationship among a visual sensor, a femur measuring plate, a femur tracker, a tibia measuring plate and a tibia tracker; attaching the femur measuring plate to the to-be-measured femur osteotomy plane, and attaching the tibia measuring plate to the tibia osteotomy plane; calculating a real-time normal included angle between the normal of the to-be-measured thighbone osteotomy plane and the normal of the tibia osteotomy plane according to the real-time target pose relationship; and when the real-time normal included angle is equal to zero, calculating the distance between the tibia osteotomy plane and the to-be-measured thighbone osteotomy plane according to the current target pose relationship. The knee joint gap measuring process is very simple, errors are not prone to being generated, and the measuring precision is higher.

According to the tibia osteotomy system and the osteotomy amount adjusting device thereof, the osteotomy amount adjusting device comprises a first rod piece, a second rod piece and an adjusting piece, the first rod piece is provided with a first guide groove, the second rod piece is connected with the first rod piece, the second rod piece is connected with a first shaft, the first shaft is inserted into the first guide groove, and the adjusting piece is connected with a second shaft; the adjusting piece is rotationally connected with the second rod piece through a first shaft, a second guide groove is formed in the adjusting piece, the first rod piece is provided with a second shaft, and when the adjusting piece rotates around the first shaft relative to the first rod piece, the second shaft moves along the second guide groove and gets close to or away from the first shaft; the relative positions of the first rod piece and the second rod piece in the length direction of the first rod piece are adjusted. According to the tibia osteotomy system and the osteotomy amount adjusting device thereof, the second guide groove in the adjusting part is used for restraining the second shaft, so that the second shaft can precisely move relative to the first shaft when moving along the second guide groove, and the osteotomy position can be precisely and finely adjusted.

The invention provides a navigation device for total knee arthroplasty of knee fusion. The navigation device comprises an osteotomy guide plate; a thighbone osteotomy slot, a wedge-shaped osteotomy slot and a tibia osteotomy slot which penetrate through the guide plate are formed in the osteotomy guide plate sequentially from top to bottom; the osteotomy guide plate is provided with a verification hole and a verification face; the verification surface is used for extramedullary observation and verification of an osteotomy surface; a metal nail is put in the verification holes and is used for verifying the osteotomy surface in a perspective view field; fastening via holes are formed in each of the upper end and the lower end of the osteotomy guide plate; and the fastening via holes are used for screws penetrate through to be fixed to a joint. According to the navigation device, whether the guide plate is in a horizontal state or not is observed through the verification surface, thereby judging whether the guide plate is consistent with an actual desired osteotomy direction or not; the Kirschner wire is put in the verification hole, and whether the Kirschner wire is consistent with a designed osteotomy direction or not can be observed in an operation, thereby implementing a design conception of intramedullary design and extramedullary verification; the guide plate can be accurately placed, and navigation is provided for osteotomy operation, thus guaranteeing the osteotomy accuracy.