607 results about "Internal fixation" patented technology

The present disclosure discloses a limb bone fixation system capable of automatically transforming from AO (Association for Study of Internal Fixation) to BO (Bio-logical Osteosynthesis) elastic fixation. The system includes a bone nail, a bone bridge, and connecting pieces attached to the bone bridge. The bone bridge is divided into a plate-shaped bone bridge and a rod-shaped bone bridge. A gasket made of a rigid degradable biomaterial is added between all connecting pieces at a broken end of one side of a fracture and the bone bridge, which can form rigid fixation for the fracture at initial fixation.

The present invention relates to an external guiding frame for a percutaneous internal fixation and strengthening intramedullary nail around the acetabulum, belonging to the field of orthopedic medical devices. It includes a universal guiding frame, which consists of an anterior guiding frame and a posterior guiding frame, respectively applicable to the supine and prone positions of the patient. Each universal guiding frame includes an arc-shaped component, which includes a left arc-shaped guide plate, a middle guide plate, and a right arc-shaped guide plate. The two ends of the middle guide plate are detachably connected to the left arc-shaped guide plate and the right arc-shaped guide plate respectively to form the arc-shaped universal guiding frame; a cross-column nail catheter and an anterior column nail catheter are arranged on the left arc-shaped guide plate or the right arc-shaped guide plate; at least one arc-shaped rod is connected to the middle plate, and a posterior column nail catheter is fixed at the end of the arc-shaped rod; when the universal guiding frame is set on the patient, the cross-column nail catheter, the posterior column nail catheter, and the anterior column nail catheter are respectively opposite to the direction between the anterior superior iliac spine and the anterior inferior iliac spine around the patient's pelvis, the ischial tuberosity of the buttocks, and the pubic upper limb of the acetabular apex.

The invention discloses a fixing device for steel Yankee dryer processing, and relates to the technical field of Yankee dryer processing. Comprising a fixing seat, a fixing rod is slidably mounted in a middle inner wall cavity of the fixing seat in a limiting manner, and a first gear is mounted at the top edge of the left end of the fixing seat through a motor; the device further comprises a first gear ring, the first gear ring is concentrically and rotationally installed on the left end face of the fixing base through a bearing, the first gear ring is meshed with the first gear, a movable groove is formed in the left side wall of the first gear ring, an installation rod is connected into the movable groove through a first elastic telescopic rod, and an installation column is fixed into a cavity in the bottom of the installation base. The mounting column is sleeved with a positioning roller, and a positioning baffle is fixed to the bottom of the left end of the mounting base. The fixing device for machining the steel Yankee drying cylinder can connect and fix the cylinder body and the cylinder cover, clears are cleaned during circumferential welding, and meanwhile the fixing device is suitable for cylinder bodies of different specifications.

The utility model relates to a universal intramedullary nail for pelvis percutaneous internal fixation, which belongs to the technical field of orthopedic medical instruments and is characterized in that the tip of the universal intramedullary nail is a three-blade tip; a hollow channel is formed in the general intramedullary nail, penetrates through the two ends of the general intramedullary nail and is used for allowing a guide needle to penetrate through; threads are arranged on the outer wall of the universal intramedullary nail, and the sparse degree of the threads gradually changes from the nail tail of the universal intramedullary nail to the three-blade tip end to form gradually-changed threads. The general intramedullary nail for pelvic percutaneous internal fixation is widely applied to percutaneous nail placement internal fixation operations and is used for penetrating pelvic bones except for suprapubis ramus and part of iliac, including inferior pubis ramus, ischium, iliac, sacroiliac joints and sacroiliac vertebral bodies.

The invention relates to the technical field of medical instruments, in particular to anti-leakage drainage equipment for general surgery clinical operations, which comprises a drainage tube, a fixing ring is sleeved on the drainage tube, a positioning component is fixedly connected between the fixing ring and the peripheral skin of a drainage part of a patient, a fixing component is coaxially arranged in the fixing ring, and a first partition plate is fixedly connected in the fixing ring. A second partition plate is further slidably connected into the fixing ring, the interior of the fixing ring is divided into a gel cavity and a triggering cavity by the first partition plate and the second partition plate, pH gel used for triggering a locking mechanism of the fixing assembly through expansion after seepage according to the pH value of seepage is arranged in the gel cavity, and the bottom of the pH gel penetrates through the fixing ring and is fixedly connected with the positioning assembly. By combining the automatic response of the pH gel, the dual induction mechanism of the memory metal and the pressure sensor and the dynamic self-locking function of the cam assembly, the drainage tube is stably clamped and fixed, the drainage tube is effectively prevented from falling off, the infection risk is reduced, and the operation safety is improved.

The invention provides a method, a system, a medium and equipment for monitoring orthopedic force of a spinal orthopedic surgery, and belongs to the technical field of medical instruments. The spine orthopedic system comprises an inner fixing rod and an outer fixing rod, the fixing structure and the locking structure are fixed to the inner fixing rod; the opening structure slides on the outer side wall of the inner fixing rod; the elastic structure is arranged on the outer side wall of the inner fixing rod in a sleeving mode, is located in an interval limited by the locking structure and the opening structure and drives the opening structure to move in the direction away from the locking structure; the standby bolt is used for connecting the opening structure and the inner fixing rod; the sensor module is located at any end or two ends of the elastic structure and used for measuring elastic force data of the elastic structure and motion data of the inner fixing rod; and the wireless communication module is used for transmitting the elastic force data and the motion data to an external receiver. The problems that in the prior art, when a spring fails, overall replacement is needed, and the correction state, the spring function and spring stress cannot be monitored in real time can be solved.

A method of making a teeth-only, gingiva-free dental restoration device for a full-arch dental replacement of a replacement arch of a patient may include using a computing device for: receiving a model of a replacement arch of a patient having post-extraction tooth sockets defined by a substantially original interdental and interradicular ridge of the patient; generating a model of a teeth-only, gingiva-free dental restoration device having individual replacement teeth portions each having a tooth axis extending between a gingival section and an incisal / occlusal section; designating individual replacement teeth portions to include abutment holes based on a location in the model of the replacement arch of straight implants secured within corresponding post-extraction tooth sockets; modifying at least one of a location, shape, and size of one or more of the teeth portions; and outputting information regarding the model for fabricating a teeth-only, gingiva-free dental restoration device.

The invention relates to the technical field of intelligent medical treatment, in particular to an orthopedic internal fixation screw looseness prediction method and system based on finite element analysis, and the method comprises the steps: analyzing a bone image of a patient in a historical collection period, and determining an abnormal sub-period in the historical collection period according to the displacement of a screw key node and a bone tissue key node; analyzing the number of abnormal sub-periods in the historical acquisition period and an interface slip ratio, and identifying a fastening screw; analyzing the change rate of the interface slip value of the fastening screw in the historical acquisition time period, judging whether the change rate is uniform or not, and outputting a prediction time point according to a change rate uniformity judgment result; according to the method, the adjustment remaining time is determined through processing and analysis according to the predicted time period point, the doctor can select to tighten the screw again or replace the screw according to the specific condition of the patient before the adjustment remaining time is calculated, a clear and scientific time basis is provided for the clinical decision of the doctor, and the timeliness and effectiveness of treatment are improved.

The utility model provides a first suturing instrument and a suturing system.The first suturing instrument comprises a conveying catheter, a fixing piece, a push rod, a puncture needle and an anchoring piece, the fixing piece is connected to the far end of the conveying catheter, an opening and closing arm used for bearing tissue is installed on the fixing piece, and a needle outlet hole used for the puncture needle to penetrate out is formed in the fixing piece; a first hole for a puncture needle to penetrate through is formed in the opening and closing arm; the push rod is arranged in the conveying catheter, is connected with the opening and closing arm and is used for opening or closing the opening and closing arm; the puncture needle is arranged in the conveying catheter; the anchoring piece is arranged at the far end of the puncture needle or connected with the far end of the puncture needle, and a suture is fixedly connected into the anchoring piece. According to the suture instrument, by arranging the conveying catheter, the fixing piece, the push rod, the puncture needle and the anchoring piece connected with the suture, the suture can be easily anchored to the tissue, and the technical problem that the suture instrument cannot anchor the suture to the tissue easily is solved.

The rib plate feeding device of the pipe section flange rib plate welding machine comprises a strip-shaped groove which can be adjusted and fixed in the extending direction of a strip-shaped base, the extending direction of the strip-shaped groove is perpendicular to the strip-shaped base, the top of the strip-shaped groove is open, and a rib plate containing frame is placed at the top of the strip-shaped groove; the rib plate containing frame moves in the extending direction of the strip-shaped groove through a transmission wheel arranged on the edge of the top of the strip-shaped groove, a rib plate feeding motor in transmission connection with the transmission wheel is fixedly arranged in the strip-shaped groove, and a feeding groove moving up and down is formed in the position, corresponding to the position under the straight line where the axis of the conical connector A is located, in the range of the strip-shaped groove. According to the rib plate feeding device of the pipe section flange rib plate welding machine, through the vertical groove structure arranged on the rib plate feeding device and the correspondingly matched rib plate placing frame, a rib plate to be welded, which is placed on the rib plate placing frame in advance, can be automatically fed to the bottom of a flange joint of a pipe section; and automatic spot welding fixation of the spot welding robot is facilitated.

The invention relates to the field of orthopedic surgery risk assessment, in particular to an orthopedic surgery risk assessment method and system. The method comprises the following steps: acquiring preoperative data and intra-operative data of an orthopedic surgery of a patient, performing data preprocessing on the preoperative data and the intra-operative data, and extracting bone microstructure spatial features in initial orthopedic surgery data by using a cascade feature extraction network; calculating an association weight of the image data and the biological signal through a cross-modal attention mechanism, and constructing a patient specific skeleton model based on finite element analysis to perform real-time scene simulation on the characteristic orthopedic surgery data; the influence of joint contact stress distribution under different osteotomy angles, a bone implant interface micro-motion threshold after implantation of an internal fixation instrument and hemodynamic changes on a bone healing microenvironment is simulated in real time, complications caused by misoperation are remarkably reduced, and the success rate of an operation is increased.

The invention provides a sleeve combined type tension pressurization internal fixation screw, and belongs to the technical field of medical devices. Comprising an outer screw sleeve, an inner core fixing screw is slidably connected to an inner cavity of the outer screw sleeve, and an arc-shaped sleeve plate is fixedly connected to the middle of the inner cavity of the outer screw sleeve; and the limiting and locking assembly is used for shortening the distance between the outer screw sleeve and the two ends of the fracture, and the limiting and locking assembly is connected with the outer screw sleeve. Through the limiting locking assembly, sliding of the inner core fixing screw is facilitated, the sliding resistance of the inner core fixing screw is reduced, in the state, the inner core fixing screw is in the most stable state, different distances can be selected according to the severity degree of the fracture broken end, and therefore different pressurization effects are changed, and the fracture broken end is more stable. The holding force of the inner core fixing screw at the fracture broken end is greatly improved, and therefore it is ensured that the inner core fixing screw can exert the pressurizing effect on the fracture broken end.

The utility model discloses an MASHDPE hollow plastic steel drainage pipe which comprises an outer pipe, a special-shaped steel belt and an inner pipe formed by spirally winding a special-shaped MASHDPE belt. The two ends of the special-shaped MASHDPE belt are upwards and vertically provided with supporting parts in a protruding mode, the top ends of the supporting parts are inwards and vertically provided with horizontal parts, a set of buckles are symmetrically arranged on the surface of the special-shaped MASHDPE belt with the central axis as the center, the special-shaped steel belt is in an arch bridge shape, the bottoms of the two ends of the special-shaped steel belt are inserted into the buckles to be fixed and spirally wound along with the special-shaped MASHDPE belt, and the top end of the special-shaped steel belt is flush with the horizontal parts. The outer pipe is fixedly arranged outside the special-shaped steel belt and the inner pipe in a sleeving mode. According to the supporting part, the spiral winding bonding area can be increased, a spiral supporting rib is formed after bonding, and the supporting part is connected with the outer pipe to form a hollow pipe wall with a spiral cavity. The horizontal parts are bonded to form a supporting platform, the bonding area of the ribs and the outer pipe is increased, and the inner and outer wall structures of the pipeline are stable. The spiral supporting ribs and the special-shaped steel strips greatly improve the ring stiffness, and the collapse rate of the cavity can be effectively reduced.

The utility model relates to the technical field of medical instruments, and particularly discloses a fracture external fixation splint which comprises a splint body, an external fixation strip and an internal fixation strip. The plate body comprises a fixing plate and a protective pad, the fixing plate is connected with the protective pad through a fastener, one side of the fixing plate away from the protective pad is connected with a retaining ring, an outer fixing strip penetrates through the retaining ring, one side of the retaining ring away from the fixing plate is provided with an inner fixing strip, and the outer fixing strip is connected through a bonding piece A; one ends, close to each other, of the outer fixing strip and the inner fixing strip are connected with first fixing cloth, one ends, close to each other, of the other sides of the outer fixing strip and the inner fixing strip are connected with second fixing cloth, and the first fixing cloth and the second fixing cloth are connected through a bonding piece B; the first fixing cloth and the second fixing cloth are connected through the bonding piece B, the splint can be conveniently fixed to the outer side of the fracture position to play a supporting role, the first fixing cloth and the second fixing cloth are convenient to connect and adjust, use is convenient, and fixation is stable.

The present application relates to the field of pipeline repair equipment, and discloses a pipeline pulling repair device. In the present application, the outer surfaces of both ends of the main support rod are movably connected with side support rods, and the outer surface of the side support rod close to the main support rod is provided with a tightening knob, and the outer surface of the side support rod away from the main support rod is welded with a threaded rod, and the outer surface of the threaded rod is movably connected with an inner reference ring, and the outer surface of the inner reference ring is welded with an outer fixed rod. The outer extrusion ring is adjusted by the inner fixed rod and the outer fixed rod, and cooperates with the internal extrusion pipeline to facilitate the pulling of the pipeline. The equipment is loosened by rotating the tightening knob, and then the main support rod and the side support rod can be telescopically movable. After the adjustment is completed, tighten and fix, and the rotation of the threaded rod drives the inner reference ring and the outer extrusion ring to act simultaneously, thereby completing the pulling repair operation, quickly repairing the pipeline, ensuring the sealing of the pipeline, and preventing the pipeline from leaking and causing waste of water resources.

The present invention discloses a ventricular volume reduction puncture device, which includes a puncture structure and a control structure; the puncture structure includes a puncture catheter and a mapping catheter. A first limiting member is provided at the proximal end of the puncture catheter, and a puncture needle is provided at the distal end of the puncture catheter. The mapping catheter is sleeved outside the puncture catheter; the control structure includes a fixed sleeve. The proximal end of the mapping catheter is fixed in the fixed sleeve, and a guide groove adapted to the first limiting member is provided on the fixed sleeve so that the first limiting member moves axially along the guide groove, thereby driving the puncture catheter to move axially.

The utility model belongs to the field of building formwork supporting structures, and particularly relates to a plate buckle type steel pipe frame formwork supporting structure. Comprising a vertical rod, a cross rod, a connecting disc and a fixing device, the fixing device comprises a sliding assembly, the sliding assembly comprises a fixing block, the fixing block is fixed to the top of the cross rod, a tooth block capable of sliding left and right is arranged in the fixing block, a tooth column capable of sliding up and down is arranged in the fixing block, and when the tooth block slides to the right position, the tooth column can slide up and down. When the tooth block slides to the left position, the tooth column is separated from the tooth block, the bottom of the tooth column is connected with an insertion bolt rod, the insertion bolt rod is inserted into the insertion hole of the connecting disc, and a window used for shifting the tooth block is formed in the fixing block. And the tooth columns are engaged with the teeth of the tooth blocks, so that the bolt rods can be effectively prevented from slipping from the insertion holes of the connecting disc, and the safety is high.

The invention relates to the technical field of medical equipment, in particular to a short and small penis therapeutic apparatus with a heating function. Comprising a mounting cylinder, a fixing frame, a treatment cylinder, a fixing assembly, a negative pressure pump, a connecting pipe, a first fixing ring, an elastic piece, a moving plate, a second fixing ring and the like. A fixing frame is arranged on the mounting cylinder, a treatment cylinder is slidably arranged on the fixing frame, a fixing assembly is arranged between the fixing frame and the treatment cylinder, a connecting pipe is arranged on the mounting cylinder, the connecting pipe is connected with a negative pressure pump, a first fixing ring and a second fixing ring are fixed in the mounting cylinder, an elastic piece is connected to the first fixing ring, and the elastic piece is connected with a moving plate. The moving plate is attached to the inner wall of the mounting cylinder. Negative pressure is generated through the negative pressure pump, so that a stable negative pressure environment is formed in the treatment cylinder, a mild suction effect is applied to the penis, local blood circulation can be promoted, tissue oxygen supply can be improved, and penis development can be assisted; and the heating wire can heat the treatment cylinder, so that the treatment cylinder is kept at a proper temperature.

The utility model relates to the technical field of steel structures, in particular to a safety type steel structure node component which comprises a fixed steel structure, a connecting mechanism is arranged on one side of the fixed steel structure, an adjusting mechanism is arranged between the fixed steel structure and the connecting mechanism, and a limiting supporting plate is fixedly connected to one side of the fixed steel structure. The locking screw groove is formed in one side of the limiting supporting plate in a penetrating mode, the movable groove is formed in one side, where the steel structure is fixed, in the limiting supporting plate, and the connecting steel plug is inserted into the limiting supporting plate in a sliding mode. According to the safety type steel structure node component, two sets of connecting mechanisms are arranged on one side of a fixed steel structure, a connecting steel plug and a movable block which are connected with one end of a transverse plate are arranged in a limiting supporting plate and a movable groove which are arranged on one side of the fixed steel structure correspondingly, and a locking bolt which is in threaded connection with the interior of a locking screw groove formed in the limiting supporting plate makes contact with the connecting steel plug; therefore, the distance between the two groups of connecting mechanisms can be adjusted and locked conveniently.

The application provides an exoskeleton steel wire pressurizing type diamond anvil cell device, and belongs to the field of high-pressure scientific research. The upper diamond press anvil of an upper diamond mounting table is oppositely arranged with the lower diamond press anvil of a lower diamond mounting table. One end of a pressurizing steel wire is fixed to the lower part of a moving sleeve in an upper pressurizing table and is fixed through a steel wire locking screw on the side of the moving sleeve. The other end of the pressurizing steel wire is fixed in a fixed hole of a lower pressurizing table and is fixed through a pressurizing steel wire locking screw on the side of the lower pressurizing table. The pressurizing mode of the press is changed to fine steel wire tensioning pressurizing, and the support column structure is cancelled. The diameter of the steel wire is in the millimeter level, and the imaging angle range of the press is maximally improved. The current scheme all adopts the support column structure, and the maximum imaging angle is 152°. The steel wire tensioning pressurizing mode is adopted in the application, the imaging angle exceeds 170°, and no other alternative scheme can complete the purpose of the application.

The utility model discloses a wearing type drainage tube fixing and protecting device capable of preventing the tube from being pulled out mistakenly in the technical field of drainage tube protection, which comprises a fixing sleeve and an internal part, the fixing sleeve comprises an elastic sheet, a fixing sheet and a connecting sheet, the fixing sheet and the connecting sheet are fixedly connected with two ends of the elastic sheet respectively, and a transparent window is arranged on the fixing sheet close to the end. The inner part comprises a protective ring, one end of the protective ring is fixedly connected with an extension section, the side wall of the protective ring is fixedly connected with a positioning sheet, one side of the extension section is fixedly connected with a fixing winding belt, one side of the fixing winding belt is fixedly connected with a tensioning sheet, the tensioning sheet is fixed with a connecting sheet in a matched mode, and the positioning sheet is fixedly connected with a fixing sheet; the cannula position can be cushioned through the protective ring to avoid compression, the front face of the abdomen is in a full-wrapping state, unconscious extubation of a patient can be avoided, and overall wearing is light, convenient and easy.

The application provides a controllable self-expanding intramedullary nail internal fixation system for long bone fracture, belonging to the technical field of orthopedic medical instruments, and comprising a self-expanding intramedullary nail, a visible controllable self-expanding platform and a locking nail; the self-expanding intramedullary nail comprises a locking hole and an expandable support; the locking hole is arranged at the proximal end of the self-expanding intramedullary nail and is matched with the locking nail to fix the proximal end of the self-expanding intramedullary nail; the expandable support is arranged at the distal end of the self-expanding intramedullary nail after expansion to fix the distal end of the self-expanding intramedullary nail. The visible controllable self-expanding platform is in communication with the expandable support and can display the expansion size, and the self-expanding intramedullary nail can be prevented from being expanded too large to affect the medullary cavity by precalculating the expansion size.

The utility model discloses a variable-diameter expansion puncture cannula device, which belongs to the technical field of medical equipment and comprises an air closed valve cover, an expansion variable-diameter main body, an inner fixing support, a variable-diameter support and a variable-diameter rubber sleeve. The inner fixing support and the bottom wall of the expansion variable-diameter body sequentially penetrate to form a through hole, and a plurality of grooves are formed in the bottom wall of the inner fixing support in the circumferential direction. The variable-diameter support is defined by a plurality of variable-diameter pieces, and each variable-diameter piece comprises a fixing part and an expanding part. And after one end of the reducing rubber sleeve is fixed in the expansion reducing main body, the other end of the reducing rubber sleeve extends out of the expansion reducing main body from the through hole and covers the peripheries of the expansion parts. The expansion part of the puncture cannula device is composed of a plurality of variable-diameter pieces and a variable-diameter rubber sleeve wrapping the variable-diameter support. Due to the fact that the variable-diameter support and the variable-diameter rubber sleeve are arranged in a split mode, the puncture cannula can play a rigid role of the variable-diameter support and a flexible role of the variable-diameter rubber sleeve at the same time, and the application range of the puncture cannula device is enlarged.

This bone fixation member is fixed to a reception hole of a base member at a discretionary inclination angle within a prescribed range, and includes: a rod part that is inserted into the reception hole; and a head part that is insertion fit into the reception hole. The outer peripheral surface of the head part includes a plurality of pressure bonding outer peripheral surface sections that can pressure bond with the inner peripheral surface of the reception hole. The plurality of pressure bonding outer peripheral surface sections are each coordinated with different positions in the direction of a virtual axis and with different pitches in the circumferential direction of said axis.

The invention discloses an idiopathic knee joint deformity correction method based on combination of growth curve prediction and absorbable material time gradient regulation and control, and is applied to the technical field of biomedical materials. Comprising the following steps: acquiring lower limb bone length data of a normal child, and drawing a growth curve; constructing and fitting a lower limb bone length model by using the growth curve data, and constructing a mathematical model for correcting idiopathic knee varus and valgus; constructing a prediction model to calculate the time of implanting the child patient with idiopathic genu varum into the steel plate for fixation during the semi-epiphyseal fixation; the absorbable zinc-magnesium alloy internal fixation nail plate with different in-vivo absorption time gradients is developed; the zinc-magnesium alloy internal fixation nail plate with the corresponding absorption time is selected for correction according to the time required by different child patients to be implanted into the steel plate for fixation. After a child patient receives a semi-epiphyseal block operation to achieve the correction effect, the internal fixation steel plate can be automatically absorbed and broken, the operation of taking out internal fixation again is omitted, the operation risk and pain are reduced, and the treatment cost is reduced.

The utility model discloses a circuit connector plug base body, which comprises a base body shell, a reinforcing framework is implanted in the base body shell, a plurality of uniformly distributed heat dissipation notches are formed in the upper outer surface and the lower outer surface of the base body shell, heat conduction holes are formed in the outer walls of the two sides of the base body shell, and heat conduction columns are fixedly mounted in the heat conduction holes. According to the utility model, the internal structural strength of the base body shell can be effectively improved through the embedded reinforcing framework, the impact resistance and the use reinforcing effect are better, and in actual use, the heat conduction column is made of a high-heat-conduction silica gel material, and the heat conduction column is made of a high-heat-conduction silica gel material, and a plurality of terminal grooves which are linearly distributed at equal intervals are formed in the base body shell. According to the utility model, the metal framework in the base body shell can be effectively reinforced and supported, so that the condition that the base body is cracked due to over-concentrated stress when the plug base body is plugged and unplugged can be avoided, the overall structural strength of the plug base body is comprehensively improved, the service life of the plug base body is comprehensively prolonged, and the stress damage when the plug is plugged and unplugged can be effectively resisted.

The invention relates to the technical field of medical instruments, in particular to a device and method for testing the fixing strength of a wired anchor, and the device comprises a lower tool which comprises a sliding seat and two clamping assemblies, the two clamping assemblies are arranged on the sliding seat in a sliding manner, and the clamping assemblies move oppositely to clamp a test block; the test block is a polyurethane block, a through hole is formed in the test block, four groups of tendon ligament simulants vertically penetrate through the through hole, anchor nails with lines are fixed in the through hole, and the anchor nails with lines are screwed into or knocked into the through hole and extrude and fix the tendon ligament simulants; the upper tool comprises a box body and a balance assembly, the balance assembly is arranged in the box body, the lower end of the balance assembly is provided with a chuck for clamping a tendon ligament simulant, the lower tool clamps a test block for simulating a human skeleton, and the upper tool clamps the tendon ligament simulant located at the upper end of an anchor nail with a line in the test block; the problems that an independent anchor is difficult to clamp due to the appearance and clamping is prone to deformation due to the material strength of the anchor with the line are solved.

The invention discloses a method for removing a bacterial biofilm on the surface of an internally-fixed titanium implant through an electrochemical anodic oxidation method, and relates to the technical field of medical instruments, the method comprises the following steps: (1) placing the titanium implant with the bacterial biofilm adhered on the surface as an anode in an electrolyte for anodic oxidation treatment; (2) carrying out glycine air sandblasting on the titanium implant; and (3) standing and soaking the titanium implant in deionized water, and then taking out and drying the titanium implant. According to the method, the electrochemical anodic oxidation technology and the sand blasting technology are combined, efficient removal of the biological membrane on the surface of the titanium implant is achieved, and the problem that bacterial biological membranes are not thoroughly removed through an existing technical method is solved.

This invention provides a fixation device and assembly method for pericondylar fractures of the knee joint prosthesis. The knee joint prosthesis includes a femoral condyle, a tibial plateau, and a tibial pad. The femoral condyle includes an anterior condyle, two posterior condyles, and an intercondylar fossa. A fixation device is installed in the intercondylar fossa, comprising an intramedullary fixation pin and a connecting fixation block. The connecting fixation block is installed within the intercondylar fossa and engages with the force-applying end of the intramedullary fixation pin. The connecting fixation block includes a main body with a top surface facing the tibial pad and a bottom surface opposite the top surface. The bottom surface extends away from the top surface to form a protrusion, and a through hole is formed within the protrusion, which is used to accommodate and fix the force-applying end of the intramedullary fixation pin. This invention embeds the entire connecting fixation block within the intercondylar fossa, fully utilizing the existing intercondylar fossa space of the PS-type prosthesis to establish a precise channel for the intramedullary fixation pin, thereby fixing the pericondylar fracture through structural fit.

The invention relates to a continuous needle placement device and a continuous needle placement robot system. The continuous needle placing device is mounted at the tail end of the mechanical arm and is used for storing and automatically supplying one or more internal fixing needles; and the inner fixing needles are conveyed according to the poses of the inner fixing needles, so that one or more inner fixing needles are sequentially placed into the target object. According to the device, continuous and automatic needle placement of the multiple internal fixing needles can be achieved, and continuous placement of the multiple internal fixing needles can be conducted at a time.