470 results about "Internal fixation" patented technology

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 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 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 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.

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.

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.

The utility model discloses a liquid snore-stopping stabilizer spraying device, which relates to the technical field of medical auxiliary devices, and comprises a snore-stopping device body, a spraying assembly is arranged at the top of the snore-stopping device body, the spraying assembly comprises a pressing piece, a fixing cylinder is arranged at the top of the snore-stopping device body, the pressing piece is connected in the fixing cylinder in a sliding manner, and a connecting pipe is arranged at the bottom of the fixing cylinder. A spring is arranged in the connecting pipe, the bottom of the spring is connected with a guide pipe, the side, close to the top, of the pressing piece is connected with a nozzle pipe, the nozzle pipe communicates with a sleeve, the sleeve is connected with an injection pipe, the injection pipe is provided with a stabilizing assembly, and the stabilizing assembly comprises a second sleeve; the side, away from the second sleeve, of the connecting rod is provided with a connecting piece, the side, away from the connecting rod, of the connecting piece is provided with an arc-shaped abutting plate, and by arranging the stabilizing assembly, auxiliary limiting is conducted on the two sides of the nose, and shaking in the spraying process and non-uniform spraying in the nasal cavity are prevented.

The embedded invisible socket comprises a mounting plate and a socket body, the middle part of the mounting plate is provided with a socket hole, and the front surface of the mounting plate is provided with a circular avoidance recessed area concentric with the socket hole; installation positioning holes are formed in the two ends of the diameter of the circular receding concave area. The socket body comprises a circular socket shell, a functional module and an adjusting ring; an external thread is arranged on the outer wall of the circular socket shell, and conductive hardware is fixed in the circular socket shell; the circular socket shell penetrates through the socket hole, the adjusting ring is in threaded connection with the circular socket shell, and the mounting plate is located between the functional module and the adjusting ring and is clamped and positioned through the functional module and the adjusting ring. According to the utility model, the structure arrangement is reasonable, the position of the circular socket shell on the mounting plate can be adjusted as required, the requirements of different mounting positions are met, the adjustment operation is convenient, the mounting is convenient, the application range is improved, the invisible effect can be realized after the mounting, the aesthetic property of the whole appearance is improved, and the practicability is strong.

1. The name of this design product: Combined internal fixation bracket (special-shaped femoral block 05). 2. Application of this product design: Used for fixation and reduction of fractures in the body. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The invention relates to the technical field of differential shell machining equipment manufacturing, and particularly discloses a cutting and grinding integrated device for a differential shell, which comprises a base, and a machine table and a controller are mounted on the base; the cutting assembly comprises a transverse moving truss and a cutting piece, and the cutting piece can cut the blank piece; the grinding assembly comprises a mounting frame and a grinding piece, the grinding piece is arranged on the mounting frame, and the grinding piece can grind the cut notch of the differential shell; the fixing assembly comprises an inner fixing part, an outer fixing part and a first driving part, a fixing seat is rotationally arranged on the machine table and corresponds to the cutting part or the polishing part, the first driving part, the inner fixing part and the outer fixing part are all installed on the fixing seat, the first driving part is connected with the inner fixing part, and the inner fixing part is in transmission connection with the outer fixing part. The blank piece is fixed to the fixing base through the combined action of the inner fixing piece and the outer fixing piece. The method has the effect of improving the working efficiency and the product consistency.

The utility model discloses a laparoscopic surgery nursing auxiliary device, and relates to the field of postoperative nursing, the laparoscopic surgery nursing auxiliary device comprises a swing mechanism and two mounting racks, the swing mechanism can swing the two mounting racks, and rollers are rotatably arranged on the mounting racks; two connecting plates are fixed in the roller, connecting sleeves are fixed on the connecting plates, and the two connecting sleeves are rotationally connected with the mounting frame; a massage assembly is arranged in the roller and comprises a plurality of massage heads capable of reciprocating in the radial direction of the roller. The device has the beneficial effects that the mounting frame is swung upwards through the swing mechanism, the mounting frame can lift up the legs of a patient through the roller to promote exhaust, the mounting frame is driven to swing back and forth through the swing mechanism, the roller rotates along the legs of the patient, and in the rotating process of the roller, the massage assembly can be triggered through the transmission assembly to massage the legs of the patient. The massage assembly is used for massaging the legs of the patient, massage is carried out while the legs are lifted for exhausting, and the patient can recover quickly after an operation.

The invention relates to the technical field of medical materials, and discloses a preparation method of a multifunctional fiber patch for bone nail fixation postoperative care. The fiber patch adopts a three-layer composite structure design, and comprises an anti-allergic silica gel substrate layer, a drug-loaded nanofiber functional layer and a waterproof breathable layer. The preparation method comprises the following steps: (1) preparing the anti-allergic silica gel substrate layer from platinum cured silica gel and a pressure-sensitive adhesive; (2) preparing a medicine-carrying nanofiber functional layer containing phellinus igniarius polysaccharide through electrostatic spinning; (3) mixing waterborne polyurethane with polytetrafluoroethylene to prepare a waterproof breathable layer; and (4) sequentially compounding the substrate layer, the functional layer and the waterproof breathable layer into the multifunctional fiber patch. The fiber patch has the comprehensive effects of resisting bacteria, resisting inflammation, resisting allergy and easing pain, meanwhile has excellent air permeability and comfort, can effectively promote postoperative wound recovery and reduce infection risks, is particularly suitable for wound nursing after orthopedic internal fixation, and has remarkable clinical application value.

A human body forearm fracture external fixing device comprises a cloth bag, an inner fixing sleeve and an adjustable sling, the cloth bag is in a U shape, the front end and the rear end of the adjustable sling are respectively connected with a connecting buckle, the top of the cloth bag is open, the two side walls of the front end of the top opening of the cloth bag are respectively connected with a front-end sling, and the front-end sling is connected with a rear-end sling. The two side walls of the rear end of an opening in the top of the cloth bag are connected with the rear-end hanging belts, the adjustable hanging belts are connected with the front-end hanging belts and the rear-end hanging belts through connecting buckles respectively, and the inner fixing sleeve adheres to the bottom of the cloth bag and can be unfolded into a rectangle or rolled into a sleeve shape. The fixing device is compact in structure, the inner fixing sleeve and the cloth bag are detachably connected, the cloth bag is convenient to detach and clean, the inner fixing sleeve is tightly wrapped on the forearm, the inner fixing sleeve is prevented from moving freely on the forearm, it is guaranteed that the elbow joint bends by 90 degrees, then the fracture position is placed in front of the chest to be suspended, and fixation of the fracture of the forearm is guaranteed.

The invention relates to the field of medical instruments, and provides a conicity-locked osseointegration prosthesis. The osseointegration prosthesis comprises an implantation prosthesis, a percutaneous device and an abutment screw, a plurality of fixing ridges are arranged on the periphery of the implantation prosthesis, intraosseous fixation is achieved in a press-fit mode, a taper locking structure is combined to prevent the implantation prosthesis from sinking, and it is ensured that the position of the implantation prosthesis is fixed after implantation; a flushing hole communicated with the internal flushing cavity is further formed in the periphery of the implant prosthesis, and the implant prosthesis can be used for injecting medicine into the medullary cavity, implanting bone materials and the like or used for follow-up flushing treatment for intramedullary infection possibly occurring in the later period. The percutaneous device and the implanted prosthesis are connected through the anti-rotation structure and the taper locking structure, the percutaneous section has the surface state formed through surface treatment, stimulation to surrounding soft tissue is reduced, the anti-infection capacity is improved, and the percutaneous sealing effect is improved. By optimizing the implantation structure and the percutaneous interface design, the intraoperative operation difficulty is reduced, the intraoperative time is shortened, meanwhile, the percutaneous stoma is reduced, and the infection risk is reduced.

The invention discloses a tool clamp for flange pipe fitting welding, and relates to the technical field of flange pipe fitting welding, the tool clamp comprises a hollow carrier plate and a pipe fitting body mounted on the upper surface of the hollow carrier plate, and further comprises a spherical hammer which is arranged on the upper surface of the hollow carrier plate and can knock the welding seam position of the pipe fitting body, the driving mechanism is arranged in the middle of the upper surface of the hollow carrying plate, used for being connected with the spherical hammer and capable of controlling the spherical hammer to move along a set path, and the driving mechanism can drive the spherical hammer to track the welding gun in real time, so that just-molten melt permeates into the deep layer of a welding seam of the pipe fitting body, and synchronous fixing is achieved through the outer fixing plate and the inner fixing rod; a spherical hammer tracks a welding gun to knock a welding seam in real time and timely eliminates stress; an inner fixing rod is switched into a dynamic positioning mode in the knocking process; the pipeline is released at the knocking moment; a permeation space is created for melt;

The utility model relates to medical auxiliary instrument technical field provides a kind of bone injury patient implant screw's taking-out device, including ring main body, internal fixation assembly and external fixation assembly.The internal fixation assembly includes expansion cylinder and expansion column, the expansion cylinder is set along the inner ring side of ring main body Circumferentially, expansion column can pass through the inner ring of ring main body, and expansion cylinder is expanded tightly.One end of expansion column located outside expansion cylinder is equipped with a rotating head.The external fixation assembly includes tightening cylinder and hoop ring, tightening cylinder is circumferentially arranged at the outer edge of ring main body, hoop ring can be sleeved on tightening cylinder, and tightening cylinder can be tightened.The bone injury patient implant screw's taking-out device proposed in the utility model can greatly improve the friction between it and implant screw, in the process of taking out implant screw, it can effectively avoid the problem of skidding, especially suitable for the case that the internal hexagonal groove of implant screw is rounded, and it is difficult to take out.

An embodiment of a body bead for a bone fracture fixation device, such as a rodscrew, includes at least one pocket and at least one tab. Each of the at least one pocket is configured to engage a respective one of at least one tab of an adjacent body bead and to withstand, without being significantly deformed, a torque of at least three N·m while rotating with the adjacent body bead. And each of the at least one tab is configured to engage a respective one of at least one pocket of another adjacent body bead and to withstand, without being significantly deformed, a torque of at least three N·m while rotating with the other adjacent body bead.

The invention belongs to the technical field of medical instruments, and particularly relates to a head stability maintaining and fixing device for a stroke ischemic patient, which comprises a headrest and two side supporting pillows arranged on the headrest, the device further comprises a supporting adjusting mechanism. The supporting adjusting mechanism comprises a containing cavity formed in the side supporting pillow, an electric push rod with a fixing plate is fixedly installed in the containing cavity, and one face of the fixing plate is connected with a sliding block sliding in the containing cavity; the face, away from the fixing plate, of the sliding block is connected with an arc-shaped clamping plate through a ball head, and a buffering pad is arranged on one face of the clamping plate. Through the designed structure, the posture of the head of a patient can be changed when the patient lies in bed, the patient does not only lie flat any more, the head of the patient can be efficiently and stably fixed when the patient inclines, appropriate adjustment is conducted according to the actually needed angle, and therefore oral secretions and vomituses are naturally discharged through gravity; and inhalation pneumonia caused by the fact that oral secretions and vomituses flow back to the airway is avoided.