264 results about "Internal fixation" patented technology

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.

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 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 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 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 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.

This utility model relates to a multi-channel working device for minimally invasive surgery, belonging to the field of minimally invasive surgical equipment technology. It includes a base plate, a tray mounted on top of the base plate, an electric rail mounted on the side of a support column on the tray, a slide on the electric rail, and a support arm connected to the slide. A platform and a hanging plate are respectively mounted at both ends of the support arm. A medication tube is fixedly placed on the platform. A disinfection tube is fixedly installed on the top outer side of the hanging plate, and a tube plate is fixedly installed on the bottom outer side of the hanging plate. A medication delivery tube, a disinfection tube, and a vertical rod are fixedly installed inside the tube plate. A endoscopic probe is fixedly installed at the bottom of the vertical rod. This utility model allows for medication delivery, disinfection, and surgical image control during minimally invasive surgery, greatly reducing the number of medical staff involved and making surgical scheduling more timely and flexible. Simultaneously, this utility model significantly improves the efficiency of medical team collaboration, thereby ensuring high-quality surgical completion and reducing the failure rate of minimally invasive surgery.

The utility model relates to a trachea cannula intraoral fixator, belongs to medical instruments, and solves the problems that in the prior art, after being fixed, a trachea cannula is inconvenient to move and easy to fall off during an operation, teeth are damaged, and the pollution risk is high when the trachea cannula is sleeved with the intraoral fixator. A trachea cannula intraoral fixator comprises a base, a hollow inner core and an air bag. A through hole is formed in the center of the base, and one side of the base is fixedly connected with the hollow inner core. An air bag is adhered to the inner wall of the hollow inner core; the base comprises a left base body and a right base body which are symmetrical and buckled, and the buckling position of the left base body and the buckling position of the right base body are rotationally connected through a flexible connecting part and connected through an opening and closing connecting part. The hollow inner core comprises a left semicircular shell and a right semicircular shell which are symmetrical and buckled, and the buckling position of the left semicircular shell and the buckling position of the right semicircular shell are rotationally connected through a flexible connecting part and connected through an openable connecting part. And the endotracheal intubation is fixed in the mouth.

The utility model relates to the technical field of medical instruments, and discloses an anti-disengagement drainage tube which comprises a fixing block fixedly connected to the outer side wall of the drainage tube. The fixing frame is arranged outside the fixing block; the straps are fixedly connected to the outer side wall of the fixed frame; the threaded rod penetrates through and is in threaded connection with the fixed frame; the limiting block is rotationally connected to the bottom of the threaded rod; the limiting groove is formed in the top of the fixing block. The straps are worn on the body of a patient, the drainage tube and the fixing block are inserted into the fixing frame, then the threaded rod is rotated, after the threaded rod is rotated, the threaded rod is affected by threaded connection with the fixing frame to drive the limiting block to move downwards, the limiting block is gradually inserted into the limiting groove, the fixing frame is connected with the fixing block, and the drainage tube is prevented from falling off from the fixing frame during drainage.

The invention provides a fixing steel plate for proximal humerus comminuted fracture, and relates to the technical field of proximal humerus fracture, the fixing steel plate comprises a main steel plate with a connecting hole and a branch steel plate fixed with the main steel plate through the connecting hole; a plurality of extending claws are arranged on the side, away from the main steel plate, of the branch steel plate, and fixing structures are arranged at the ends of the extending claws and can connect bone fragments and make the bone fragments tightly attached to the main bone. The branch steel plates can be strip-shaped or ring-shaped, and the extension claws can be integrally formed or detachably combined. The problems that a traditional steel plate can only be placed on the outer side, and when fractures are smashed, the upper rear large nodule and the inner fracture blocks are difficult to fix and prone to displacement or internal fixation fails are solved, all-directional fixation is achieved, the steel plate is suitable for different fracture scenes, operative wounds are reduced, and shoulder joint function recovery is assisted.

This utility model discloses a steel box-type truss that is easy to assemble and connect, including crossbars symmetrically distributed at four corners and a first hollow plate welded to the inner side of the middle of the crossbars; it also includes: a second hollow plate and a third hollow plate fixedly connected to the outer sides of the front and rear ends of the crossbars respectively, and a definable docking structure provided between the second hollow plate and the third hollow plate; a first reinforcing rib fixedly connected to the first hollow plate and fitted to the outside of the crossbar, and the first reinforcing ribs are evenly distributed within the first hollow plate; a receiving plate fixedly welded to the crossbars is provided on both the front and rear sides of the first hollow plate, and a second reinforcing rib fixedly connected to the receiving plate and fitted to the crossbar, and both the receiving plate and the second reinforcing rib have an "X" shaped structure. This steel box-type truss that is easy to assemble and connect facilitates high load-bearing capacity, prevents detachment, and allows for rapid assembly and docking of the steel box-type truss.

The utility model discloses a minimally invasive long tail spine internal fixing system, which relates to the technical field of medical apparatus and instruments, and comprises a fixer main body, the top of the fixer main body is provided with a positioning component, the fixer main body comprises a fixing screw, the top of the fixing screw is provided with a mounting seat, the outside of the mounting seat is provided with an extension seat, and the extension seat is provided with a fixing component. A clamping groove is formed in the middle of the side wall of the extension seat, and a correcting rod is arranged in the middle of the clamping groove. According to the minimally invasive long-tail spine internal fixing system, positioning connection of the correcting rod is achieved through the arranged positioning assembly, the correcting rod is connected into the arc-shaped connecting base through the arranged threaded rod, the arranged positioning block is inserted into the threaded rod, and when the threaded rod descends, the positioning block is driven to be clamped to the outer portion of the correcting rod, so that the correcting rod is fixed to the position of the correcting rod. The arc-shaped clamping groove in the bottom of the positioning block is arranged outside the correcting rod in a sleeving mode, limiting connection of the correcting rod is achieved, the correcting rod is prevented from deviating in the using process, and the using stability of the device is improved.

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.

This utility model discloses a collagen mask soaking device, relating to the field of mask soaking technology. It includes a soaking box with fixed plates fixedly connected to both sides. Limit grooves are formed on the inner surfaces of both sides of the fixed plates. A servo motor is detachably connected to the bottom of one fixed plate, and a threaded rod is detachably connected to the output shaft of the servo motor. A guide rod is fixedly connected inside the other fixed plate. A U-shaped lifting frame is installed on the threaded rod and the guide rod. Two limit blocks are fixedly connected to both sides of the U-shaped lifting frame. Two columns are symmetrically fixedly connected to the lower end of the U-shaped lifting frame, and a reinforcing rib is fixedly connected to one side of each column. This collagen mask soaking device uses a servo motor to drive the lifting frame to rise and fall, improving soaking uniformity and efficiency. A circular groove positions the mask, and a drain hole cooperates with a drain plate to drain the liquid. The cover plate snap-fit ​​structure facilitates installation and removal, ensuring the mask does not shift.

The invention discloses a pericardium thoracocentesis effusion drainage device and method, and relates to the field of medical care, the pericardium thoracocentesis effusion drainage device comprises a liquid storage device, a liquid storage cavity is formed in the liquid storage device, a positioning frame is fixedly mounted at the top of the liquid storage device, a fixing pipe is fixedly inserted in the positioning frame, the bottom end of the fixing pipe extends into the liquid storage cavity, and the top of the fixing pipe is fixedly sleeved with a mounting cylinder; a threaded opening is formed in an inner ring of the mounting cylinder, a drainage tube is inserted into the inner ring of the mounting cylinder, external threads are arranged at one end of the drainage tube, the drainage tube is inserted into the threaded opening in a threaded mode, a sponge block is fixedly mounted in the liquid storage cavity, a flow guide plate is obliquely arranged in the liquid storage cavity, a fixing plate is fixedly arranged in the liquid storage cavity, and a drainage opening is formed in the fixing plate; according to the pericardium and thoracocentesis effusion drainage device, people do not need to frequently put on and take off the device, drainage can be conveniently conducted no matter a patient walks or lies flat, great convenience is brought to the patient, the effusion amount of word drainage of the patient can be automatically controlled, and safety is improved.

The utility model discloses a minimally invasive intramedullary fixing device for clavicle fracture, which comprises a near-end intramedullary nail and a far-end intramedullary nail, the front surface of the near-end intramedullary nail is fixedly connected with an upper connecting plate, the front surface of the far-end intramedullary nail is fixedly connected with a lower connecting plate, the near-end intramedullary nail is provided with a positioning hole, and the near-end intramedullary nail is provided with a lower connecting plate. A positioning cylinder is slidably connected into the positioning hole, a supporting plate is fixedly connected to the end, away from the positioning hole, of the positioning cylinder, a near-end reset nail is slidably connected to the supporting plate, a sliding rod is slidably connected into the supporting plate, and the device further comprises a connecting assembly, a driving assembly and a limiting assembly. The L-shaped rods on the two sides are driven by the pressing rod to move downwards, the inserting rod is inserted into the far-end intramedullary nail, the L-shaped rods are driven to be inserted into the inserting holes under the action of the spring, the far-end intramedullary nail and the near-end intramedullary nail are pulled out of the clavicle through the handle, and a doctor does not need to detach fixing screws one by one.

Ultrasonic cleaning device for implants with multiple grooves, comprising an ultrasonic cleaning container (1), characterized in that: a cleaning groove (2) made of stainless steel is fixedly installed inside the ultrasonic cleaning vessel (1), wherein an implant placement basket (3) is installed inside the cleaning groove (2) made of stainless steel, wherein several circular recesses (4) are formed on a top surface of the implant placement basket (3) in a uniformly spaced arrangement, and wherein circular positioning holes (5) are formed on a bottom surface inside the several circular recesses (4), wherein two mounting cavities (6) are formed symmetrically on an inner wall of the circular recesses (4), and wherein the two mounting cavities (6) are provided inside with movable push rods (7), and wherein a spring (8) is fixedly installed on an inner side wall of the mounting cavities (6). wherein one end of the spring (8) facing away from the inner side wall of the mounting cavities (6) is attached to the movable push rod (7), wherein a clamping plate (9) is fixedly installed on one end of the movable push rod (7) facing away from the spring (8).

The present application belongs to the technical field of biological bionics, polymer, hydrogel material and the like, and particularly relates to a preparation method of a porous surface fracture internal fixation plate. The gentamicin-chitosan-acetic acid mixed solution is placed in an air compressor, the porous surface of the 3D printed fracture internal fixation plate is sprayed, after completion, the calcium chloride-collagen mixed solution is sprayed, then the fracture internal fixation plate is immersed in sodium hydroxide solution and sodium carbonate solution in sequence, and then freeze-drying is performed, so that the mussel shell bionic porous surface fracture internal fixation plate is obtained. The fracture internal fixation plate obtained by the present application has good biocompatibility, stable performance, mechanical properties close to natural bone and can realize drug loading for local prevention of fracture infection.

The utility model relates to the technical field of medical instruments, and discloses a urine catheterization device for nursing, which comprises a urinary catheter, an expansion mechanism is arranged at one end of the urinary catheter, a corrugated pipe can be extended by pulling a pull ring on a support frame to achieve the effect of container expansion, and when the urine catheterization device is not used, the corrugated pipe can be contracted to reduce the volume of a container, so that the urine catheterization device is convenient to use. A lower fixing seat and an upper fixing seat are installed on one sides of the two supporting frames, the lower fixing seat and the upper fixing seat are rotationally connected through a hinge, and inner fixing seats are slidably installed in the lower fixing seat and the upper fixing seat, so that during use, a pull ring extends out through a first limiting hole and rotates by 90 degrees to achieve connection of the supporting frames and the inner fixing seats; when the pull ring is pulled, the inner fixing seat moves synchronously with the transverse plate, and meanwhile, the inner fixing seat is fixed under the action of a limiting groove and a rubber pad, so that the situation that the corrugated pipe is collided or urine flows back due to natural recovery can be avoided.

The invention relates to the technical field of medical instruments, and discloses a blood pumping device and a heart assisting device.A notch is formed in the inner wall of a machine shell, a lining is fixed to the inner wall of the machine shell, and an outer flow path groove is defined by the lining and the notch; the stator assembly is fixed to the inner wall of the lining, the rotor assembly comprises a rotating shaft and magnetic steel, and an inner flow path groove is formed in the interval between the stator assembly and the magnetic steel. The far-end bearing is fixedly arranged at the far end of the machine shell; the outer fixing piece is fixedly arranged at the near end of the machine shell, a communicating groove communicating with the outer flow path groove and a flow path hole penetrating through the communicating groove are formed in the outer fixing piece, and an outer side pipeline is fixed to the position of the flow path hole; an inner ring of the near-end bearing is fixedly connected with the near end of the rotating shaft, and an outer ring of the near-end bearing is fixedly connected with the outer fixing part; one end of the inner fixing piece is fixedly connected with the outer fixing piece, and the pipe wall directly faces the outer ring of the near-end bearing; and an inner side pipeline is fixed at the other end of the inner fixing piece. The outer side pipeline and the inner side pipeline are located on the same side of the device, perfusate flowing into the body of a patient can be reduced, and the safety and applicability of the device are improved.