51 results about "Prosthesis Implantation" patented technology

To provide a sleeve for a prosthetic implant having an anatomical profile.SOLUTION: The invention relates to: a sleeve (10) for a prosthetic implant (100) implantable in bone such as a femur; and related modular prosthetic assembly (200) including at least a rod (110), an intermediate neck component (112) and a sleeve (10).SELECTED DRAWING: Figure 1

The application discloses a channel type mitral valve prosthesis implantation system, which comprises a plurality of deformable biological ring guide wires, the end of each of the biological ring guide wires is provided with a bendable hook, the hooks are used for forming a guideable channel, and the channel is annular in shape; a biological ring which is in the shape of a strip when freely stretched, two free ends of the biological ring are configured to be locked when a main body part of the biological ring is pushed along the channel to form a biological ring locking buckle; and a mitral valve prosthesis support which is fixed in the biological ring. The system is simple to operate, saves operation time, and enables safe and efficient completion of the operation.

Heart valve prosthesis implantation apparatus (10), comprising: - a prosthesis catheter (11) with a heart valve prosthesis (12) to be implanted, - an ICE catheter (9) - for insertion into a surrounding area of ​​a heart valve (HC) to be treated, - for detecting a relative position (RPHC) and / or a relative orientation direction (ROHC) of the heart valve (HC) to the ICE catheter (9) by means of an ultrasound image (USHC) of the heart valve (HC) through the ICE catheter (9), and - preferably for performing ultrasound images (USPC) of the prosthesis catheter (11), wherein the ICE catheter (9) is configured to determine an absolute reference position (ARPHC) and / or an absolute reference orientation direction (AROHC) of the heart valve, 2D ultrasound images in multiple planes, and / or 3D ultrasound images of the heart valve (HK) to create- a navigation system (51) for determining an absolute position (APICE) and an absolute orientation direction (AOICE) of the ICE catheter (9), - a control device (52) for controlling the insertion of the heart valve prosthesis (12) into the annulus of the heart valve (HC) based on the ultrasound images (USHK, USPK, USHKP) of the ICE catheter (9) and position and orientation direction information (APICE, AOICE, APPK, AOPK, APHKP, AOHKP) from the navigation system (51), - a display (53) for simultaneously displaying information (APHKP, AOHKP) regarding the position and / or orientation of the heart valve prosthesis (12) and the 2D ultrasound images and / or 3D ultrasound images for monitoring the insertion of the heart valve prosthesis (12) into the annulus of the heart valve, wherein the control device (52) is set up toto verify the correct insertion of the heart valve prosthesis (12) based on a comparison of the current position (APHKP) and / or the current orientation direction (ORHKP) of the heart valve prosthesis (12) with the determined absolute reference position (ARPHK) and the reference orientation direction (AROHK) of the heart valve (HC).

The embodiment of the invention is suitable for the technical field of medical treatment, and provides a joint postoperative simulation image generation method, electronic equipment and a computer program product, and the method comprises the steps: obtaining preoperative data for a to-be-operated joint; determining a correction reference point of the preoperative original CT image; based on a preset skeleton coordinate system and the correction reference point, correcting the preoperative original CT image to obtain a corrected original CT image; based on a preset skeleton coordinate system and the correction reference point, correcting the preoperative skeleton CT image to obtain a corrected skeleton CT image; based on a preset skeleton coordinate system, the correction reference point and the virtual skeleton prosthesis, generating a correction prosthesis CT image; generating a joint postoperative simulation image according to the corrected original CT image, the corrected skeleton CT image and the corrected prosthesis CT image; the joint post-operation simulation image is an X-ray image, the X-ray effect of prosthesis implantation and image correction can be simulated, and a basis is provided for surgical planning and selection of a proper prosthesis and placement position.

The invention relates to an ankle joint tibia prosthesis, an ankle joint prosthesis and a navigation system.The ankle joint tibia side prosthesis comprises a prosthesis body and a sliding part, the sliding part is arranged on the rear side of the prosthesis body, the position of the sliding part relative to the prosthesis body in the front-back direction of the prosthesis body is adjustable, and the sliding part is arranged on the back side of the prosthesis body. And the prosthesis main body and the sliding piece are in contact with a tibia osteotomy surface. The ankle joint tibia prosthesis can adapt to tibia anatomical structure differences of different patients, the covering effect of the ankle joint tibia prosthesis and the tibia osteotomy surface is good, the stability of the ankle joint tibia prosthesis after implantation is improved, and adverse reactions of postoperative patients are reduced.

The invention provides an assembled radial head prosthesis, and belongs to the technical field of medical instruments. The invention provides an assembled radial head prosthesis which comprises a radial head, a radial handle and a plurality of sets of filling parts, a joint nest is formed in the upper end of the radial head, and a mounting groove is formed in the lower end of the radial head; a mounting head is arranged at the upper end of the radial handle and is arranged in the mounting groove; the multiple sets of filling parts are sequentially arranged in a stacked mode and all arranged on the outer side of the radial handle in a sleeving mode, the inner side walls of the filling parts are matched with the outer side wall of the radial handle in shape, and the filling part at the lowermost end is located above the osteotomy bone surface of the radius of the patient. According to the assembled radial head prosthesis, the number of the filling pieces is selected according to the actual situation, the filling pieces are arranged between the radial head and the osteotomy bone surface of a patient, the osteotomy bone surface is supported, the position of the radial head is limited, the stability of the prosthesis after implantation is improved, and the risks that the prosthesis is loosened and fractures occur around the prosthesis are reduced.

The subtalar joint prosthesis comprises a talus assembly, a gasket and a calcaneus assembly, and the talus assembly and the calcaneus assembly are connected through the gasket to form a joint structure; by means of the split structure of the talus assembly, the gasket and the calcaneus assembly, all the assemblies are detachably clamped, step-by-step implantation and assembly in the operation process are facilitated, and therefore the adaptability of the prosthesis under different anatomical conditions is improved. The gasket is arranged between the talus assembly and the calcaneus assembly, a relative motion interface is formed between the talus assembly and the calcaneus assembly, the gasket is made of the low-friction material, direct friction between metal assemblies can be effectively reduced, abrasion is reduced, and the joint movement performance is improved. By means of the structural design, dependence of prosthesis implantation on accurate matching of bone surfaces is reduced, surgical operation is simplified, and meanwhile a feasible solution is provided for rebuilding after joint fusion operation.

The invention provides an acetabular cup prosthesis implantation position optimization method based on a bone mineral density evaluation result. The acetabular cup prosthesis implantation position optimization method comprises the steps that an acetabular cup prosthesis model is placed at a to-be-implanted position in a CT image; extracting grid data of the model outer spherical shell; according to the grid data, determining a pixel gray value of a part attached to the outer spherical shell of the model in the CT image, and binding the pixel gray value with the grid data of the outer spherical shell; according to a set pixel gray threshold value and a pixel gray value corresponding to the grid data of the outer spherical shell, the bone density distribution condition of the prosthesis implantation position is quantitatively evaluated, and if the evaluation result does not meet the implantation requirement, the posture of the acetabular cup prosthesis model is automatically and finely adjusted based on a gradient descent method. According to the method, the bone density distribution condition of the prosthesis implantation position is quantitatively evaluated, a doctor does not need to read a multi-layer CT image, and the preoperative planning efficiency is improved; and the implant pose of the prosthesis can be quickly optimized according to a bone mineral density evaluation result, so that the efficiency and accuracy of implant pose planning of the prosthesis are improved.

Method for comparing implants or prostheses. Method for comparing implants or prostheses, and / or surgical contexts, from a population of individuals each carrying an implant or prosthesis, the method comprising: A) for each individual: - information on the type of implants or prostheses, and / or at least one parameter of the surgical context of placement of the implant or prosthesis; - acquisition of clinical parameters; and - determination of a score (GS) quantifying a benefit provided to the individual by the intervention; B) classification of individuals so as to obtain at least two risk profile categories indicative of a ratio between a benefit provided and the risk incurred; C) for each category, calculation of a reference GS, the reference GS being a quantile of the GSs of the individuals in the category; after step C), comparison, within each category, of the types of implants or prostheses and / or surgical contexts according to the GS.Figure for the abridged version: Fig. 1.

The invention relates to a surgical navigation system and a thighbone force line verification method thereof, and the method comprises the steps: collecting point cloud data through employing a probe to carry out the conical motion around a thighbone force line axis in an operation, and carrying out the fitting of a plane, and calculating the normal direction; according to the method, the real-time deviation angle between the preoperative planned femoral force line and the intraoperative actual femoral force line can be directly and quantitatively calculated, so that a doctor can timely find and correct the force line deviation exceeding a safety threshold value before key steps such as prosthesis implantation, and the accuracy and reliability of surgical navigation and the success rate of the whole operation are greatly improved.

The invention provides an instrument for repairing femoral head defects, and belongs to the technical field of medical instruments. A guide pin, a guider, a chamfering cutter and a reamer; a guider cutting edge is arranged at the lower end of the guider, a center hole matched with the guide pin is formed in the guider, and the upper end of the guider is fixedly connected with a quick connector C; the guide needle is used as a common positioning reference to penetrate through the whole operation process, it is ensured that each step of operation from cartilage pre-cutting and defect area cutting forming to final reaming is accurately carried out along the preset axis, positioning deviation possibly occurring in a traditional method is effectively avoided, and due to the design of an observation hole in the guider and scale marks of a reamer rod body, the accuracy of the reamer is improved. Real-time and visual operation feedback and depth control are provided for doctors, visual and quantitative management of the operation process is achieved, and the accuracy of the prosthesis implantation position and the matching degree of bone bed forming are improved.

The invention discloses a navigation method and device for hip replacement surgery and electronic equipment, and relates to the field of medical engineering. The method comprises the following steps: acquiring a three-dimensional skeleton model of a patient before a hip joint replacement operation and a first target position of a to-be-implanted prosthesis of the patient in the three-dimensional skeleton model; establishing a mark coordinate system according to the plurality of reference mark points; acquiring a patient position of the patient and a tool position of the handheld tool in the surgical space; a mapping relation between a mark coordinate system and an image coordinate system is established through image registration, the image registration comprises coarse registration and fine registration, and the image coordinate system is a coordinate system where the three-dimensional skeleton model is located; determining a second target position of the to-be-implanted prosthesis in the operation space according to the mapping relation; and combining the patient position, the tool position and the second target position to guide the doctor to perform hip replacement surgery. By implementing the technical scheme provided by the invention, the accuracy of image registration is improved through coarse registration and fine registration, and then the accuracy of prosthesis implantation is improved.

A docking station for a prosthetic heart valve includes a radially expandable and collapsible frame with a first plurality of struts, an inflow end portion, an outflow end portion, and a longitudinal axis. A sealing member is disposed on the outflow end portion and configured to form a seal between the docking station and a body lumen. The docking station further includes a valve seat coupled to the frame and configured to receive an expandable prosthetic valve. The valve seat includes a second plurality of struts coupled to the frame and extending in a downstream direction and angled inwardly toward the longitudinal axis of the frame.

The invention discloses a prosthesis, a prosthesis installer and a prosthesis implantation system.The prosthesis installer comprises an installation assembly and a driving assembly, the installation assembly comprises a supporting piece and a connecting structure, and the connecting structure is arranged at one end, in the first direction, of the supporting piece and comprises a connecting part used for being inserted into an installation hole of the prosthesis; the driving assembly is arranged on the supporting piece and used for driving the connecting part to move between the opening position and the folding position, the connecting part is inserted into the mounting hole and can abut against the inner circumferential face of the mounting hole when located at the opening position, and therefore the connecting structure and the prosthesis are relatively fixed and can drive the prosthesis to move; the connecting part is inserted into the mounting hole and can be separated from the inner circumferential surface of the mounting hole and separated from the mounting hole when in the folding position, so that the connecting structure is separated from the prosthesis. According to the prosthesis, the prosthesis installer and the prosthesis implantation system provided by the embodiment of the invention, the problem that the prosthesis is easily driven to generate displacement in a skeleton in the process of separating the prosthesis installer from the prosthesis can be solved.

This invention provides an auxiliary device for lacrimal duct prosthesis placement in cases of lacrimal punctum stenosis. The device includes a guide tube and a tapered guide head located at the lower end of the guide tube. The guide tube comprises a left half and a right half disposed opposite each other, with an elastic clamping portion connected above the left and right half tubes. The left and right half tubes are openable and closeable via the elastic clamping portion. An arc-shaped left groove and a right groove are formed along the length direction on opposite sides of the left and right half tubes, respectively. The left and right grooves can be joined to form a receiving cavity. The tapered guide head includes a left guide head and a right guide head connected to the lower ends of the left and right half tubes, respectively. The left and right guide heads can be closed and connected. Compared to existing lacrimal duct prosthesis implantation aids, this invention's lacrimal duct prosthesis placement auxiliary device is simple to operate and allows for gentle, stepwise expansion, effectively reducing damage to ocular tissues.

A heart valve prosthesis and methods of its implantation are described herein. The prosthesis can be implanted in a heart of a patient by positioning an upper support of an anchoring element into a left atrium of the patient. The upper support can expand adjacent to a native valve structure of the patient. Further, the upper support can be moved against the native valve structure in a direction toward a left ventricle of the patient. A lower support of the anchoring element can be positioned into the left ventricle, spaced apart from the upper support, the lower support being separate from the upper support and coupled to the upper support by a flexible connector. Finally, the lower support can expand within the left ventricle, and engagement members of the lower support can engage with tissue of the native valve structure.

The application discloses a split type anatomical radial head joint prosthesis, which comprises a radial head and a radial medullary needle, the radial medullary needle comprises a connecting head and a nail body, the connecting head is connected with the nail body, the axis of the connecting head intersects with the axis of the nail body, and the axes of the connecting head and the nail body are located in the same plane, the included angle between the axis of the connecting head and the axis of the nail body is consistent with the anatomical form of the human radial head, the connecting head is rotationally connected with the radial head, and the rotationally connected surface of the connecting head and the radial head is a spherical surface. The connecting head and the nail body have a certain included angle between the axes, so that the prosthesis is consistent with the anatomical form of the human radial head; meanwhile, the connecting head and the radial head are rotationally connected in the application, and the rotationally connected surface of the connecting head and the radial head is a spherical surface, so that the prosthesis can better adjust the connecting angle of the radial head and the radial medullary needle when implanted in an individual, and the individual difference of the case is maximally adapted, thereby improving the success rate of prosthesis implantation.

The invention discloses a prosthesis, a prosthesis installer and a prosthesis implantation system.The prosthesis installer comprises a connecting assembly and a driving assembly, the connecting assembly comprises two connecting parts which are oppositely arranged, each connecting part comprises an inner side face and an outer side face which are opposite, and the inner side faces of the two connecting parts are opposite to each other; the driving assembly is connected with the two connecting parts and used for driving the two connecting parts to move relatively between the unfolding position and the folding position. A bulge is convexly arranged on the inner side surface or the outer side surface of at least one connecting part; when the two connecting parts are inserted into the two mounting holes of the prosthesis respectively and located in the opening position or the closing position, the protrusions retreat from the corresponding grooves, so that the connecting parts can be separated from the corresponding mounting holes, and the connecting assembly is separated from the prosthesis. According to the prosthesis installer provided by the embodiment of the invention, the problem that the prosthesis rotates and displaces relative to the skeleton when the connecting assembly is separated from the prosthesis can be solved.

The utility model provides a cup placing mechanism and a surgical prosthesis implantation auxiliary tool. The cup placing mechanism comprises a cup placing rod shaft and a switching part arranged at one end of the cup placing rod shaft, wherein the cup placing rod shaft is provided with an adapting groove and an unlocking groove penetrating through the groove wall of the adapting groove, one end of the adapting part is provided with a threaded part used for being in threaded connection with a prosthesis implant, the other end of the adapting part is provided with an inserting part used for being inserted into the adapting groove, and the inserting part is provided with a locking groove; the unlocking groove is provided with a switching part button and a switching part elastic piece. The switching part button is provided with a limiting protrusion used for being clamped into the locking groove to limit the insertion part. The switching part elastic piece is connected with the switching part button and used for driving the limiting protrusion to be clamped into the locking groove. And the limiting bulge can be separated from the locking groove when the switching part button is pressed down, so that the insertion part can be separated from the switching groove. By the adoption of the technical scheme, the cup placing mechanism can be compatible with prosthesis implants of different manufacturers, and meanwhile high-efficiency disassembly and assembly of the prosthesis implants are achieved.

The invention discloses a knee joint replacement prosthesis, and relates to the technical field of medical instruments. The knee joint replacement prosthesis comprises a patella connecting assembly, the patella connecting assembly comprises a patella supporting platform and a supporting rod, and one end of the supporting rod is fixedly connected with the patella supporting platform; the tibia oversleeve is arranged on the supporting rod in a sleeving manner; one end of the medullary cavity handle is fixedly connected with the other end of the supporting rod through a connecting assembly, a separation groove is formed in the other end of the medullary cavity handle, the forming direction of the separation groove is the same as the axial direction of the medullary cavity handle, and the end of the medullary cavity handle is divided into a plurality of elastic sections through the separation groove. The diameter of the end of the medullary cavity handle is variable, the medullary cavity handle can smoothly stretch into the preset position of the medullary cavity, the resilience force generated by deformation of the elastic section can increase the friction force between the medullary cavity handle and the medullary cavity, and therefore the stability of fixation between the medullary cavity handle and the medullary cavity is enhanced; therefore, the knee joint replacement prosthesis improves the stability after the prosthesis is implanted into the bone.

The utility model relates to the technical field of surgical auxiliary instruments, in particular to a novel positioning device for prosthesis implantation in hip replacement surgery, which comprises a telescopic support rod, an adjusting pad is connected to the end of the telescopic support rod, and rotating columns are connected to two sides of the adjusting pad; one side of the adjusting sleeve is provided with a movable hole for the telescopic supporting rod to move close to one end of the adjusting pad, the adjusting pad is arranged in the adjusting sleeve, and the two sides of the adjusting sleeve are provided with strip-shaped holes for the rotating column to move; any point can be selected as a fixing point only by exposing acetabulum edge bone, then the positioning device is installed, an acetabulum test mold with the minimum size is placed at the acetabulum bottom, after forward inclination and abduction angles are evaluated, the telescopic supporting rod is adjusted to be consistent with the acetabulum test mold rod at the moment in direction, and the telescopic supporting rod is firmly fixed through the screw plug. The positioning device is an effective aiming device in the operation, is simple, convenient and practical, can be removed after the acetabular prosthesis is placed, and can be disinfected for use or used in a disposable mode.

The invention provides an auxiliary positioning device for hip joint replacement prosthesis implantation, a hip joint replacement prosthesis at least comprises an acetabular cup, the auxiliary positioning device comprises a lining body, a supporting structure and an optical positioning array, the lining body comprises a first surface and a second surface, and the first surface of the lining body is attached to the inner surface of the acetabular cup; one end of the supporting structure is mounted on the second surface of the lining body, and a supporting surface is formed at the other end of the supporting structure; the optical positioning array is installed on the supporting face, and the implantation state of the acetabular cup in the hip replacement surgery is verified based on collected pose data of the optical positioning array. The auxiliary positioning device provided by the invention can be arranged in an acetabular cup in an operation, is compatible with a navigation system of an orthopedic robot, captures pose data in real time, shortens verification time, improves verification precision through data measurement of a three-dimensional space, is simple to operate, and contributes to improving the precision of prosthesis implantation execution of the orthopedic robot.

The utility model relates to the technical field of medical instruments, and discloses a 3D printing humerus prosthesis retaining a shoulder joint, which comprises a prosthesis body, the proximal end of the prosthesis body is used for being connected with the humerus head of the shoulder joint, the proximal end of the prosthesis body is in a bulb shape, the top of the proximal end of the prosthesis body is provided with a connecting area, and the connecting area is provided with a plurality of nail-shaped protrusions; a through nail hole is further formed in the near end of the prosthesis body, and the nail hole is perpendicular to the connecting area. The near end of the prosthesis body is in the ball head shape, is provided with the connecting area and is connected with the humerus head of the shoulder joint, the shoulder joint can be reserved, the natural movement range and functions of a patient can be maintained, damage to surrounding tissue is reduced, recovery of more natural movement and daily activities is facilitated, and postoperative functions are improved; the contact area of the bulb-shaped connection is large, and the nail-shaped bulge structure is arranged in the near-end connection area of the prosthesis body, so that the contact area can be further increased, and the connection is more stable; and the initial and long-term stability of prosthesis implantation is facilitated.

The application discloses a kind of bone model manufacturing methods based on 3D printing technology, it is related to medical technology field, including, the multimodal image data of patient bone is collected, image segmentation and reconstruction are carried out, and the digital three-dimensional model of patient bone is generated;Mechanical optimization and material distribution adjustment are carried out to digital three-dimensional model using topological optimization algorithm, and bionic microstructure is designed, and the three-dimensional bone model optimized and bionic designed is output;The bone model for generating personalized mold is detected and qualified, and the prosthesis that is completely matched with patient bone is customized through mold personalized;Preoperative simulation and prosthesis implantation scheme design are carried out based on bone model, and the personalized prosthesis and surgical plan that adapt to patient bone are obtained;The topological optimization algorithm is used to maximize the structural stiffness and minimize the material usage, so that the bone model can better meet the biomechanical requirements of patients, and the bionic characteristics and mechanical properties of the model are enhanced through bionic microstructure design.

This invention relates to the field of medical device technology, and discloses a 3D-printed humeral prosthesis that preserves the shoulder joint. The prosthesis includes a prosthesis body, with a proximal end for connecting to the humeral head of the patient's own shoulder joint. The proximal end of the prosthesis body is ball-shaped, and a connection area is provided at the top of the proximal end, with multiple nail-like protrusions. The proximal end of the prosthesis body also has through-holes perpendicular to the connection area. The ball-shaped proximal end of the prosthesis body of this invention, with its connection area, connects to the humeral head of the patient's own shoulder joint, preserving the patient's own shoulder joint, maintaining the patient's natural range of motion and function, reducing damage to surrounding tissues, facilitating more natural movement and recovery of daily activities, and improving postoperative function. The ball-shaped connection has a large contact area, and the nail-like protrusion structure in the connection area of ​​the proximal end of the prosthesis body further increases the contact area, making the connection more stable; this contributes to the initial and long-term stability of the prosthesis implantation.

The application relates to the technical field of orthopedic artificial joint, in particular to an integrated unicompartmental prosthesis system and a preparation method of the integrated unicompartmental prosthesis system. The integrated unicompartmental prosthesis system comprises a femoral condyle prosthesis, a tibial plateau prosthesis and a tibial plateau pad prosthesis; the femoral condyle prosthesis and the tibial plateau prosthesis are both made of a zirconium niobium alloy 3D printing; the tibial plateau pad prosthesis is made of a zirconium niobium alloy 3D printing or a zirconium niobium alloy forging; the upper surface of the femoral condyle prosthesis is in contact with the tibial plateau pad prosthesis, and the upper surface of the tibial plateau prosthesis is in contact with the lower surface of the tibial plateau pad prosthesis. The bone integration interfaces of the integrated unicompartmental prosthesis system are all formed by zirconium niobium alloy trabecular structures, and the friction contact surfaces between the prostheses are all metal ceramic interfaces formed by zirconium niobium surface oxidation, so that the bone resection amount of the tibial plateau can be reduced, the wear resistance of the friction interface can be improved, the wear debris of the friction interface can be greatly reduced, and the stability of the prosthesis in the later period is improved.

Disclosed in the present application are a method and apparatus for mirroring processing-based determination of acetabular cup prosthesis information. The present application relates to the field of information processing. The method comprises: acquiring a three-dimensional bone model of a patient, and establishing a coordinate system in the three-dimensional bone model according to target feature points in the three-dimensional bone model, wherein the three-dimensional bone model at least comprises a three-dimensional model of the pelvis of the patient; when the affected-side acetabular fossa is incomplete, performing mirroring processing on a healthy-side pelvis model in the three-dimensional bone model according to the coordinate system, and determining information of the affected-side acetabular fossa according to the mirrored healthy-side pelvis model; and determining prosthesis information of an acetabular cup prosthesis according to the information of the affected-side acetabular fossa, wherein the prosthesis information comprises at least one of the following: a prosthesis model and a prosthesis implantation position. The present application solves the technical problem in the related art where the accuracy of prosthesis information is low when determining prosthesis information of an acetabular cup prosthesis according to the affected-side acetabular fossa of a patient.

Provided are a biological trochlear groove replacement assembly and a method for using same. The biological trochlear groove replacement assembly comprises a prosthesis (10), a test model (20), and a cushion block (30). The test model (20) has an upper surface generally fitting with the prosthesis (10) and a height identical to the prosthesis (10), and is configured for simulating the mounting posture of the prosthesis (10). An adjustment hole (22) provided on the test model (20) can facilitate the adjustment of the posture of the test model (20) while the test model (20) is preliminarily positioned. A positioning hole (21), a first positioning hole (31), and a second positioning hole (32) provided on the test model (20) and the cushion block (30) are configured for drilling mounting holes with a drill rod, such that the mounting of the cushion block (30) and the prosthesis (10) can be accurately directed, and the matching extent between the positions of the first mounting hole and the second mounting hole provided on the femoral section and a prosthesis mounting column is ensured, thereby ensuring that the prosthesis (10) can be mounted at the posture where the test model (20) is positioned, and effectively improving the success rate of the prosthesis implantation surgery.

The invention relates to the technical field of orthopedic surgery auxiliary instruments, and discloses reverse shoulder joint prosthesis implantation auxiliary equipment which comprises a fixing part, two positioning parts, two guiding parts and two clamping parts, the two positioning parts are symmetrically and rotatably arranged on the fixing part, the two guiding parts are symmetrically and rotatably arranged on the fixing part, and the two clamping parts are symmetrically and rotatably arranged on the fixing part. By arranging the symmetrically-distributed fixing piece, the positioning piece, the guiding piece and the clamping piece, accurate and stable implantation of the reverse shoulder joint prosthesis is achieved, the fixing piece is attached to the humerus through the bent U-shaped bottom support and is matched with an extrusion structure to achieve stable fixation of the device, the angle of the positioning piece can be flexibly adjusted, accurate positioning is achieved by attaching the positioning plate to the sectioning plane of the humerus, and the device is simple in structure and convenient to use. The angle of the guiding piece can be flexibly adjusted, the guiding piece is stably fixed through friction locking, it is ensured that the axis of the prosthesis is aligned with a bone hole, the clamping piece can be adjusted in a sliding mode, the prosthesis is stably clamped without being damaged by being matched with a limiting structure, and the problems that in the prior art, the prosthesis is prone to skewing during implantation, and bone cement wrapping is uneven are solved.