53 results about "Artificial hip joints" patented technology

The invention relates to the technical field of medical instruments, and discloses an angle-adjustable artificial hip joint prosthesis structure which comprises a thighbone connecting assembly, an acetabulum connecting assembly and a movable part movably connected between the thighbone connecting assembly and the acetabulum connecting assembly. The thighbone connecting assembly comprises a first connecting unit fixedly connected with the movable part, a thighbone stem detachably connected to the lower end of the first connecting unit, and a connecting screw fixedly connected to the upper end of the thighbone stem and in threaded connection with the first connecting unit. The acetabulum connecting assembly comprises a second connecting unit fixedly connected with the movable part and an acetabulum fixedly connected to the second connecting unit. Stable rotating connection is achieved through the double-shaft moving part, and a traditional easily-abraded spherical surface structure is replaced; the locking assembly is matched to realize personalized angle adjustment and locking; the femoral stem can be detached and replaced, and adaptability is improved; the surface composite coating promotes osseointegration and improves biocompatibility, the overall structure stability is high, adaptability is high, and postoperative recovery is fast.

The simulation experiment device for the frictional wear behavior of the surface of the artificial hip joint sample comprises a rack, a hydraulic loading mechanism, a hip joint simulation opposite-grinding pair mechanism, a composite motion mechanism, a lubricating liquid adding mechanism and an abrasive dust adding mechanism, and the simplification of the opposite-grinding pair structure and the simulation of an opposite-grinding track are both considered; a lubricating liquid adding mechanism and an abrasive dust adding mechanism are introduced in combination with actual conditions, artificial hip joint friction wear simulation under different lubricating conditions and abrasive dust forming conditions can be better simulated, and the artificial hip joint friction wear simulation device is more suitable for artificial joint material performance evaluation and selection under laboratory conditions.

The invention provides a numerical control machine tool spindle vibration real-time monitoring and automatic restraining method which comprises the steps that spindle vibration parameters of a titanium alloy artificial hip joint femoral stem bionic structure in the numerical control machine tool machining process are obtained, the vibration parameters comprise the vibration frequency and the vibration amplitude, and meanwhile porosity distribution information of a machining area is collected; according to the porosity distribution information, the processing area is divided into a surface layer loose bone structure area and a deep layer compact bone structure area, vibration parameters of different areas in the processing process are extracted respectively, and the mapping relation between the vibration parameters and porosity distribution is established; and according to the vibration parameter change rule of the deep compact bone structure area, a collaborative change model of the vibration parameters and the cutting state is established, and the vibration trend of the main shaft during machining in the low-porosity area is predicted and obtained.

The invention discloses a micro-arc oxidation coating for an artificial hip joint Ti6Al4V alloy and a preparation method of the micro-arc oxidation coating. The preparation method comprises the following steps that S1, pretreatment is conducted; s2, preparing a micro-arc oxidation electrolyte; s3, preparing a micro-arc oxidation coating; s4, cleaning and drying treatment; a preparation method of the electrolyte comprises the steps that 6 g of sodium metaaluminate solid powder, 4 g of potassium hydroxide solid powder, 2 g of sodium hexametaphosphate solid powder, 4 g of sodium silicate solid powder and 4 g of yttrium oxide nanoparticles are sequentially weighed and added into a beaker, then 980 mL of ultrapure water at the temperature of 60 DEG C is added into the beaker, and stirring is conducted for 2 min while the temperature is kept; the yttrium oxide particles are approximately spherical or ellipsoidal, the particle size range is 20-50 nm, and the purity is 99.99%. The yttrium oxide nanoparticles are introduced into the electrolyte, the micro-arc oxidation coating containing the yttrium oxide is prepared on the surface of the Ti6Al4V alloy, and compared with a traditional micro-arc oxidation coating, the surface porosity of the micro-arc oxidation coating containing the yttrium oxide is remarkably reduced, and the compactness is remarkably improved.

The acetabular cup removal device for artificial hip joints according to an embodiment of the present invention comprises a main shaft and a cutter section that cuts the acetabular region while being rotated by the main shaft. The cutter section includes a cutter tilting unit capable of tilting along the acetabular region around an imaginary tilting axis, a cutter mounting unit coupled to the cutter tilting unit in a manner that allows relative sliding toward or away from the imaginary tilting axis, and a cutter detachably mounted on the cutter mounting unit. The cutter tilting unit comprises a first through-hole penetrating along the imaginary tilting axis, a connecting bar fixed at both ends to the cutter mounting unit, and a leaf spring fixed at both ends to the connecting bar with a central portion between the two ends.

The artificial hip joint wear test system comprises a first linear motor; the first clamp is used for clamping a contrast sample and can be driven by the first linear motor to reciprocate up and down in the vertical direction; the first load sensor is arranged between the first linear motor and the first clamp; the follow-up platform is arranged between the first clamp and the micro-separation platform and is connected with the balancing weight through a steel wire rope bypassing the fixed pulley so as to just counteract the preset weight, so that the control sample and the test sample are subjected to the same vertical downward load; a micro-separation platform; the second clamp is used for clamping a test sample; the second load sensor is arranged between the micro-separation platform and the second clamp; and the three-axis rotating mechanism is connected with the second clamp and is used for applying rotating force to the test sample in at least one of the X-axis direction, the Y-axis direction and the Z-axis direction. The control sample provides a reference that can be observed over time, which helps to compare and differentiate the long-term wear characteristics of new materials or designs of the test sample.

Systems and methods receive pre-operative, volume data for a patient's pelvis and a femur. A three-dimensional (3D) model is generated of the patient's pelvis and femur. A hologram of the patient's native hip is generated from the 3D model. The patient's pelvis is registered relative to a pelvic coordinate system. The hologram is displayed and the patient is aligned with the hologram. The 3D coordinates of a selected point on the femur is determined relative to the pelvic coordinate system. Following implantation of prosthetic hip components, the hologram of the patient's native hip is displayed again and the patient is aligned with the hologram. The 3D coordinates of the selected point on the patient's femur are again determined. One or more changes to leg length, offset, or Anterior-Posterior (AP) position are determined based on the two 3D coordinates determined for the selected point. The one or more changes to leg length, offset, or Anterior-Posterior (AP) position are displayed

The utility model discloses an artificial joint intelligent spraying device convenient to fix, and relates to the technical field of artificial joint processing, the artificial joint intelligent spraying device comprises a protection frame, a limiting table and a limiting part used for automatically limiting an artificial joint, the limiting table is installed in the protection frame, a built-in installation box is arranged below the limiting table, and the built-in installation box is connected with the limiting table. And the limiting part is arranged in the limiting table, an air cylinder is arranged below the limiting part, a plurality of containing grooves are formed in the upper portion of the limiting table at equal intervals, and a plasma spraying mechanical arm is installed on the front side of the protection frame. According to the spraying device provided by the utility model, manual hip joints are automatically limited and fixed by adopting the limiting part in the limiting table, and after a worker places the hip joints in the middle of the placing groove of the limiting table, the hip joints can be synchronously limited by controlling the air cylinder; and therefore, workers do not need to manually limit the spraying equipment one by one, and the efficiency of the spraying equipment is further improved.

The application discloses a kind of artificial hip joint fatigue test device, including frame, it is characterized in that: the bottom of the frame is provided with Z direction oil cylinder, the top of Z direction oil cylinder is connected with the bottom of simulated acetabulum seat, the middle part of frame is provided with middle support plate, the middle support plate is provided with guide sleeve, the simulated acetabulum seat is slidably connected between linear bearing and guide sleeve, the top of the simulated acetabulum seat is provided with lubricating liquid cup and simulated acetabulum, the simulated acetabulum is located inside lubricating liquid cup, the simulated acetabulum is connected with artificial femoral head spherical surface in artificial hip joint, the top of the frame is provided with top support plate, top support plate is provided with horizontal displacement mechanism, and the execution end of horizontal displacement mechanism is movably connected with the top of artificial femoral stem in artificial hip joint by universal joint.

The utility model relates to the technical field of artificial hip joint prostheses, in particular to a hip joint femoral stem hollow conical head. Comprising a cone head surface (1), a cone side surface (2), a cone inner cavity (3) and a powder cleaning channel (5) which are connected in sequence, the conical head face (1) is used for sealing the in-conical cavity (3), the conical side face (2) is matched with a ceramic ball head or a metal ball head, the conical side face (2) is provided with a plurality of small protrusions (4) so that the femoral stem conical head can be matched with the ceramic ball head or the metal ball head more tightly, and the in-conical cavity (3) is used for increasing elastic deformation of the conical head. The small bulges (4) generate plastic deformation when the ceramic ball head or the metal ball head is assembled with the conical head, so that the contact area between the ball head and the conical head is increased, and the friction force is increased; and the powder cleaning channel (5) is used for cleaning unmelted powder in the cavity in additive manufacturing.

The present invention relates to an antibiotic spacer for an artificial hip joint using a carbon fiber, the antibiotic spacer being entirely made of a carbon fiber and being temporarily used in a hip joint region until an artificial joint revision surgery is performed. According to the present invention, an antibiotic spacer for an artificial hip joint comprises: an inner support part formed in a curved shape which is bent in one direction; an outer support part disposed outside the inner support part and formed in a curved shape which is bent in the same direction as that of the inner support part; a middle support part which connects the inner support part and the outer support part, which are spaced apart from each other, to be inclined toward each other; a core part formed to connect one end of the inner support part and one end of the outer support part to each other; and an extension support which connects the other end of the inner support part and the other end of the outer support part to each other and extends to be long downward, wherein the antibiotic spacer for an artificial hip joint includes multiple carbon fiber sheets laminated on and coupled to each other; and the inner support part and the outer support part have more carbon fiber sheets laminated thereon and coupled thereto than, and thus have a higher density of carbon fiber sheets per unit area than the middle support part and the extension support.

An artificial hip joint prosthesis and a method for mounting the same are provided. The artificial hip joint prosthesis includes a spherical chamber and a ball head. An outer spherical surface of the ball head fits with an inner spherical surface of the spherical chamber to form a spherical hinge. An inner spherical surface of the spherical chamber has an opening in an elliptical shape or a similar shape with a long axis and a short axis, to allow insertion of the ball head. The long axis of the opening in the elliptical shape or the similar shape has a length A, and the short axis of the opening has a length B. The ball head is mounted inside the spherical chamber and has a diameter C, in which B<A≤C.

The program causes the computer to execute the following processes: acquiring a perspective image of a patient to be subjected to a process relating to the artificial hip joint; identifying an inner plate line in the pelvis of the patient in the acquired perspective image, the inner plate line representing a maximum cutting site when cutting the pelvis in order to configure an acetabular cup included in the artificial hip joint; identifying a bid line in the patient's pelvis, the bid line representing a minimum cutting site when cutting the pelvis in order to configure the acetabular cup; deriving the CE angle of the acetabular cup when the disposition of the acetabular cup is assumed in a state in which the pelvis of the patient is cut with a bone digging reamer for the treatment related to the artificial hip joint; displaying the identified inner plate line and the identified necessary line on the perspective image in an overlapping manner; and attaching the exported CE angle of the acetabular cup to the perspective image for displaying.

The invention discloses a method for determining the installation position of an artificial hip joint acetabular cup, which quantifies the hip joint motion range corresponding to each acetabular cup potential installation position of a patient, and compared with the existing disclosed method, the method has the advantages that the hip joint motion range can not be met even if all acetabular cup installation positions cannot meet the hip joint motion range requirement; according to the method disclosed by the invention, the acetabular cup mounting position enabling the hip joint to have relatively large range of motion can also be obtained. Meanwhile, when a doctor adjusts the imaging abduction angle RI and the imaging front inclination angle RA of the acetabular cup, the doctor can clearly know the influence of adjustment of the position of the acetabular cup on the motion range of the hip joint of the patient through the obtained patient acetabular cup installation position map.

The utility model relates to the technical field of medical instruments, and discloses an artificial hip replacement surgery side position body position support which comprises a body position plate, an arc-shaped plate used for fixing is fixedly installed on one side of the body position plate, a fixing belt used for positioning is fixedly installed on one side of the arc-shaped plate, and a connecting plate used for fixing is fixedly installed on one side of the arc-shaped plate. A thigh supporting plate used for supporting is fixedly installed on one side of the connecting plate, and an elastic belt used for fixing is fixedly installed on one side of the thigh supporting plate. According to the artificial hip joint replacement surgery lateral position body position support, through cooperative arrangement of the connecting plate, the thigh supporting plate and the elastic belt, the body position plate and the thigh supporting plate can be fixedly connected through the connecting plate, meanwhile, the angle of the device can be adjusted according to needs so as to meet the use requirement, the thigh supporting plate can fixedly install the elastic belt, and the elastic belt is not prone to falling off. And the device has certain elasticity, so that the device is fixed more firmly, and the risk of an operation is reduced.

The invention relates to the technical field of artificial hip joint prostheses, in particular to an additive-manufactured hollow acetabular cup prosthesis and a manufacturing method thereof. The additive-manufactured hollow acetabular cup prosthesis comprises a plug pin, a cup body and a porous structure which are sequentially connected. The inner molded surface of the cup body comprises an inner end surface, an inner spherical surface, a conical surface, an anti-rotation lug mounting groove and a clamping groove, and the inner molded surface of the cup body is used for mounting the mortar lining; the conical surface of the cup body is used for mounting the ceramic lining, and the inner end surface, the inner spherical surface, the anti-rotation lug mounting groove and the clamping groove are not in contact with the ceramic lining; the porous structure is attached to the outer molded surface of the cup body, and the outer molded surface of the porous structure is hemispherical or semi-ellipsoidal and stops on a long axis; the porous structure and a cup body rotating shaft are short half shafts; the top end of the cup body is provided with a threaded hole used for installation in an operation, the end face of the cup body is provided with at least one powder discharging hole, and a blocking pin is installed after powder discharging. The inner spherical surface of the cup body is not provided with or is provided with at least one titanium nail hole for installing and implanting a titanium nail for initial fixation; and a communicated cavity is arranged between the end face and the outer molded surface.

The utility model relates to the technical field of medical instruments, and discloses a portable folding chair for an artificial hip replacement postoperative patient, which comprises a chair seat, a back cushion plate and a seat cushion plate are arranged on the chair seat, the included angle between the back cushion plate and the seat cushion plate is greater than 90 degrees, and a chest frame for restraining the upper body of the patient is connected onto the back cushion plate; leg clamps which can be folded and stored are arranged on the cushion plate; a foot stool used for restraining the feet of the patient is arranged at the bottom of the front portion of the chair seat, and two rubber bands are fixedly connected to the foot stool. The positions of the upper body, the two legs and the soles of the patient are limited and restrained in sequence from top to bottom through the angle structure of the chair seat, the chest frame arranged on the back cushion plate and used for restraining the upper body of the patient, the leg clamps arranged on the seat cushion plate and used for limiting and unfolding the two legs, and the foot stool matched with the two legs for restraining the lower limbs, so that the posture of the patient is kept correct, and rehabilitation is facilitated; meanwhile, the leg clamp can be folded and stored, so that the leg clamp can be normally used by other people or can be normally used by a patient after rehabilitation, and the use convenience is improved.

The invention relates to the technical field of medical apparatuses and instruments, and discloses an auxiliary device for artificial hip joint replacement, which comprises a limiting seat, a placement seat with a cavity structure is connected to the limiting seat, an inferior arc placement groove is formed in the placement seat, and a plurality of pressure sore prevention assemblies are mounted in the placement seat. An inflation and deflation mechanism is installed in the containing base and connected with a pressure sore prevention assembly, the pressure sore prevention assembly comprises an arc-shaped plate, a plurality of supporting air bags are fixedly connected to the arc-shaped plate at equal intervals, and the supporting air bags are arranged on the containing groove. According to the auxiliary device for artificial hip joint replacement, the contact area between the auxiliary device and the limbs of a patient can be increased through cooperation of the multiple expanded supporting air bags, so that bearing pressure increase caused by too small contact area is avoided, meanwhile, the two sets of supporting air bags alternately change, the contact part between the auxiliary device and the limbs of the patient can be changed, and the pressure sore prevention effect is further improved.

The utility model discloses a tool for measurement in artificial hip joint replacement. The tool comprises an eccentric distance measuring assembly and a height measuring assembly arranged on the eccentric distance measuring assembly. The eccentric distance measuring assembly is in a T shape and comprises a transverse section and a vertical section arranged at one end of the transverse section in the length direction, the transverse section is provided with a first scale groove, and the bottom end of the vertical section is provided with an arc-shaped face tangent to the bottom face of the transverse section and matched with the arc face of the top end of the thighbone greater trochanter. The device can adapt to different conditions of different patients and improve the measurement accuracy during prosthesis mold testing in an operation, meanwhile, due to the determined right-angle relation among the transverse section, the vertical section and the measurement ruler, an operator can be prevented from finding a vertical line in the operation, the height of a rotation center can be directly measured, and the measurement accuracy is improved. The purpose of noninvasive measurement in an operation is achieved through arc-shaped surface positioning.

The acetabular cup removal device for artificial hip joints according to an embodiment of the present invention includes a main shaft and a cutter unit that cuts the acetabular portion while rotating around the main shaft. The cutter unit includes a cutter tilt unit that can be tilted along the acetabular portion around a virtual tilt axis, a cutter mounting unit that is slidably coupled to the cutter tilt unit in a direction approaching or moving away from the virtual tilt axis, and a cutter detachably mounted on the cutter mounting unit. The cutter tilt unit includes a first through hole penetrating along the virtual tilt axis, a connecting bar having both ends fixed to the cutter mounting unit, and a leaf spring fixed to both ends of the connecting bar and having a central portion between both ends.

The present invention discloses an automated artificial hip joint spraying device and its spraying method. The device includes a spraying platform, which is an openable and closable airtight structure with a spraying chamber inside and a ventilation duct on the top; a rotary worktable, which is arranged on the horizontal plane of the spraying chamber of the spraying platform and can clamp and rotate the artificial hip joint; a spraying robotic arm, which is arranged in front of the rotary worktable and outside the spraying platform and can pick up, place and spray the artificial hip joint; a workbench, which is arranged within the moving radius of the spraying robotic arm; and a material tray, which is horizontally arranged on the workbench. By using automated mechanical equipment to spray the artificial hip joint, compared with manual spraying, the present invention not only sprays more evenly, but also greatly reduces the occupation and consumption of labor, improves the spraying quality and efficiency of the artificial hip joint, effectively protects producers from the intrusion of dust, high temperature and noise, and optimizes the production environment of the artificial hip joint.

This program causes a computer to execute processing for: acquiring a fluoroscopic image of a patient to whom a treatment related to an artificial hip joint including a cup is to be applied; and inputting the acquired fluoroscopic image to a trained model that has been trained to output, when a fluoroscopic image is inputted thereto, positional information on the anterior wall of the acetabulum and the posterior wall of the acetabulum of the patient, thereby deriving the positional information on the anterior wall of the acetabulum and the posterior wall of the acetabulum of the patient.

The acetabular cup removal device for artificial hip joints according to an embodiment of the present invention includes a main shaft and a cutter unit that cuts the acetabular portion while rotating around the main shaft. The cutter unit includes a cutter tilt unit that can be tilted along the acetabular portion around a virtual tilt axis, a cutter mounting unit that is slidably coupled to the cutter tilt unit in a direction approaching or moving away from the virtual tilt axis, and a cutter detachably mounted on the cutter mounting unit. The cutter tilt unit includes a first through hole penetrating along the virtual tilt axis, a connecting bar having both ends fixed to the cutter mounting unit, and a leaf spring fixed to both ends of the connecting bar and having a central portion between both ends.

An inner plate line indicating a maximum shaving point when shaving a pelvis to arrange a cup included in an artificial hip joint is displayed in a superimposed manner.SOLUTION: Acquiring, by a computer, a fluoroscopic image of a patient to be subjected to a procedure related to an artificial hip joint, recognizing, in a pelvis of the patient in the acquired fluoroscopic image, an inner plate line indicating a maximum cutting point when cutting the pelvis to arrange a cup included in the artificial hip joint, and recognizing, in the pelvis of the patient, an indispensable line indicating a minimum cutting point when cutting the pelvis to arrange the cup; And deriving a cup CE angle when the cup is assumed to be placed in a state in which the pelvis of the patient has been shaved by the bone drilling reamer used in the treatment related to the artificial hip joint, superimposing and displaying the recognized medial plate line and the requisite line on the fluoroscopic image, and displaying the derived cup CE angle in association with the fluoroscopic image.SELECTED DRAWING: Figure 1

The present invention relates to the technical field of sputtering coating, and discloses a coating device for artificial hip joint processing, including a box body, and also including: a coating component, the coating component is arranged at the top of the box body, the coating component is used to coat the artificial hip joint, the coating component is composed of a protective mechanism and a coating mechanism; the protective mechanism is composed of a baffle and a ring; a continuous feeding component, the continuous feeding component is arranged at the bottom of the box body and the outside of the box body, the continuous feeding component runs through the side of the box body, and the continuous feeding component is used to continuously feed the artificial hip joint. The present invention can make the baffle receive the ions bombarded by the target material during the first rotation of the target material when the silver target material is used for the first time, and will no longer receive the bombarded ions of the silver target material from the second rotation, thereby avoiding the silver oxide layer on the surface of the silver target material being coated on the surface of the artificial hip joint, resulting in poor coating quality of the artificial hip joint, thereby improving the use effect of the equipment.

The utility model discloses an alarm stopper for preventing artificial hip joint postoperative dislocation, which comprises a positioning waistband, an alarm is arranged on the positioning waistband, a contact device is arranged in the upper part of a first arc-shaped pipe, the upper part of the first arc-shaped pipe and the upper part of the contact device are both arranged below a connecting block, one end of the connecting block is arranged below the side surface of the alarm, and the other end of the connecting block is arranged below the side surface of the alarm. Alarms are arranged on the two sides of a positioning waistband, a positioning plate and a movable plate are arranged below the alarms respectively, an L-shaped rotating rod, a limiting plate and a leg binding belt are arranged below the movable plate, and a first arc-shaped pipe, a second arc-shaped pipe and an arc-shaped column are arranged between the side face of the movable plate and a connecting block respectively; meanwhile, a contact device is arranged in the top of the first arc-shaped pipe, and the patient is prevented from continuously bending the hip by utilizing the warning effect of an alarm when the hip joint of the patient is bent by 90 degrees through the limiter, so that the postoperative rehabilitation effect is achieved.

The present invention discloses an artificial hip joint acetabulum prosthesis rotary cutting and extracting device, comprising a push rod, a telescopic device is provided on the top of the push rod, a connecting device is provided above the top of the push rod, the top of the fixing rod extends into the bottom circular hole of the push rod and is connected to the telescopic device, the bottom of the fixing rod is fixedly connected with a positioning ball head, the first connecting rod and the third connecting rod are hinged on both sides of the bottom circular hole of the push rod respectively, the other end of the first connecting rod is hinged on one end of the second connecting rod, the other end of the third connecting rod is hinged on one end of the fourth connecting rod, the other end of the second connecting rod and the other end of the fourth connecting rod are respectively located on both sides of the center of the positioning ball head, and are respectively hinged to the two ends of a rotating shaft arranged through the center of the positioning ball head, a first rotary cutting blade is provided at the hinged connection between the other end of the first connecting rod and one end of the second connecting rod, and a second rotary cutting blade is provided at the hinged connection between the other end of the third connecting rod and one end of the fourth connecting rod. The device is easy to operate.

This invention belongs to the field of friction-reducing and antibacterial coating technology, and discloses a friction-reducing and antibacterial titanium alloy coating, its preparation method, and its application. The method includes the following steps: preparing an interlaced elliptical microtexture on the surface of a titanium alloy; sequentially performing N-ion implantation and Cu-ion implantation; and then chemically plating copper onto the titanium alloy surface after ion implantation to obtain the friction-reducing and antibacterial titanium alloy coating. The textured surface prepared by this invention, combined with the metallic copper layer, results in better protein adhesion to the sample surface, significantly improved lubrication and antibacterial properties. The friction coefficient is 0.362-0.483 in the atmosphere, 0.222-0.326 in simulated body fluids, and 0.196-0.236 in serum, with an antibacterial rate of 98-100%. This invention features high preparation precision, regular shape, adjustable coating thickness, and a unique surface texture that can support at least one year of human activity, making it applicable to surgical implants such as artificial hip joints.