62 results about "Bone spicules" patented technology

The invention provides a tibia transverse moving device based on a universal rotating joint, relates to the technical field of orthopedic medical instruments, and solves the problems that in the prior art, during an operation, a bone needle is obliquely installed, and due to a rigid frame and single-plane adjustment of a traditional device, the bone needle is not stably fixed, stress is concentrated, and complications occur frequently. The device is mainly composed of a main body support, a universal rotating joint device and a short bone needle fixing mechanism, the device is symmetrically distributed on the two sides with an adjusting rotary knob as the center, in the using process, transverse moving of bones can be completed only by controlling the adjusting rotary knob, and multi-direction adjusting is achieved through universal rotating joints.

The invention discloses a method for promoting skin repair by assisting exosome transdermal delivery through a sponge spicule. The method comprises the following steps: pretreating skin by using a composition containing the sponge spicule; mixing the exosome vesicle freeze-dried powder with a redissolving medium at 5-40 DEG C, and then applying the mixture to the skin; the exosome vesicle freeze-dried powder is obtained by performing membrane fusion on exosome and liposome to obtain exosome vesicles and then performing freeze drying. According to the invention, the skin is pretreated by using the composition containing the sponge bone needle, the skin barrier resistance is reduced, the skin repair response is stimulated, and then the exosome vesicles are re-dissolved and then applied to the skin surface, so that the transdermal utilization rate of exosome contents is promoted. The exosome vesicle provided by the invention has good in-vitro storage stability, and after the exosome vesicle is stored at 0-5 DEG C for 180 days, the activity retention rate after redissolution is 80% or above.

The invention relates to the technical field of orthopedic medical apparatuses and instruments, and discloses a bone broken end healing bridge which comprises an adjustable track; the two connecting seats are mounted at the two ends of the adjustable track respectively, mounting holes are formed in the connecting seats, each mounting hole comprises two arc parts and two plane parts, the two plane parts are parallel to each other, and the two ends of each arc part are connected with one ends of the two plane parts respectively; the fixing assembly is mounted on the adjustable track and used for driving the two connecting seats to be close to or away from each other; the bone needle penetrates through the mounting hole, two matching surfaces are arranged on the outer wall of the bone needle, and the matching surfaces are attached to the plane part; the number of the nuts corresponding to one bone needle is two, and the connecting base is fixedly installed between the two nuts. The anti-rotation capability of the bone needle can be improved.

The application discloses a guiding locking device and a fracture fixation system thereof, and relates to the technical field of medical devices. The guiding locking device comprises a guiding locking pipe and a locking piece, at least one strip-shaped slot is arranged on the pipe wall of the guiding locking pipe and communicates with the pipe cavity of the guiding locking pipe, the strip-shaped slot penetrates through the locking end, and the locking piece can drive the pipe wall of the locking end to contract. The fracture fixation system comprises a bone plate, a bone needle and the guiding locking device, a fixing through hole is arranged on the bone plate, the connecting end of the guiding locking pipe is fixedly connected with the fixing through hole, the guiding locking pipe is arranged perpendicularly to the bone plate, the bone needle is arranged in the pipe cavity of the guiding locking pipe, and the locking piece can drive the pipe wall of the locking end to contract and clamp the bone needle. The application reduces the risk of fracture displacement when the bone needle is used to fix the fracture; avoids the influence of the bone needle on the placement of the bone plate; shortens the length of the bone needle entering the medullary cavity, so that the application scene of the temporary fracture fixation technology of the bone needle is not limited in the treatment of the fracture by the intramedullary nail; and the stability is better than that of the multiple bone needles used to fix the fracture.

The invention relates to the technical field of orthopedic surgery medical instruments, and discloses a surgical tibia reduction support which comprises a bottom connecting plate, the upper portion of the bottom connecting plate is movably sleeved with a first telescopic rod, the end of the first telescopic rod is fixedly connected with a connecting plate, and the upper portion of the connecting plate is fixedly connected with a second telescopic rod. According to the tibia reduction support for the operation, a first round bone needle and a second round bone needle are installed in a bone, a second inclined rod and a first telescopic rod are sequentially connected to the outer portion of the first round bone needle and the outer portion of the second round bone needle in a sleeving mode, the first inclined rod and the first telescopic rod are installed on the two sides of a leg, and meanwhile a telescopic adjusting plate is rotated to adjust the angle of equipment; the first telescopic rod and the second telescopic rod installed at the two ends of the thigh are synchronously rotated, the length of the first telescopic rod and the length of the second telescopic rod are adjusted and controlled, the first telescopic rod and the second telescopic rod can drive the fracture part to be stretched, and therefore the staggered bone is driven to be stretched and positioned, and the bone positioning accuracy is improved.

The application relates to the technical field of medical devices, in particular to a calcaneus external fixing support, which comprises a first screw rod, a sliding base connected to the outer wall of the first screw rod in a sliding mode, a second screw rod connected to the first screw rod in a sliding mode, a sliding seat connected to the outer wall of the sliding base in a sliding mode, the sliding direction of the sliding seat is arranged at an angle with the moving direction of the sliding base, the second screw rod is arranged at an angle with the first screw rod, a limiting assembly for limiting the sliding of the sliding base is arranged on the outer wall of the first screw rod, a first locking piece for limiting the sliding of the sliding seat is arranged on the side wall of the sliding seat, a positioning assembly for limiting the sliding of the second screw rod is arranged on the first screw rod, a second locking piece for fixing a bone needle is arranged on the side wall of the moving seat, and a third locking piece for fixing the bone needle is arranged on the outer wall of the second screw rod. The application has the effects of conveniently adjusting the structure of the heel of a patient and reducing the dislocation of the heel structure in the process of fixing the support.

The invention discloses a bone needle and soft tissue interaction deformation testing device and testing method fusing multiple sensors, and belongs to the technical field of deformation testing. The deformation testing device comprises an optical platform, a spicule stress loading module, a spicule clamping module, an image method testing module, an NDI optical positioning tracking testing module and a spicule deformation testing module. The optical platform is fixed on the flat ground, the spicule stress loading module and the image method testing module are both installed on the optical platform, the spicule clamping module is installed on the spicule stress loading module, a spicule on the spicule clamping module is inserted into the tested object module, and the bottom of the tested object module is installed on the optical platform. The testing device has the remarkable advantages of being compact in structure, easy to operate and the like, integrates testing methods of various sensors, and has the remarkable advantages of being high in precision, good in stability, high in testing efficiency and the like.

The invention relates to the technical field of medical instruments, and discloses a tibia transverse moving device which comprises a traction mechanism, two connecting rod mechanisms connected to the two sides of the traction mechanism, a universal rotating mechanism arranged at the tail ends of the connecting rod mechanisms and a long bone needle clamping mechanism arranged at the tail end of the universal rotating mechanism. Wherein the traction mechanism is configured to drive a bone block to move transversely, the connecting rod mechanism comprises a length-adjustable telescopic unit, and the universal rotating mechanism realizes three-dimensional angle adjustment. Through the synergistic effect of all the components, the surgical suitability and the operation accuracy can be effectively improved.

The invention discloses an axial micro-motion and rigid locking dual-mode switchable fracture external fixation support, and relates to the technical field of orthopedic medical instruments, and the key points of the technical scheme are that the fracture external fixation support comprises two bone needle assemblies; the outer sleeve is connected with one bone needle assembly; the telescopic inner core rod is connected with the other bone needle assembly and is sleeved in the outer sleeve in an axial sliding manner; the elastic buffering assembly is arranged between the outer sleeve and the telescopic inner core rod; the mode switching assembly is arranged on the telescopic inner core rod and can be operably connected with or separated from the outer sleeve; when the mode switching assembly is separated from the outer sleeve, the telescopic inner core rod can axially slide relative to the outer sleeve and act on the elastic buffering assembly. When the mode switching assembly is connected with the outer sleeve, the telescopic inner core rod is rigidly connected with the outer sleeve through the mode switching assembly. Fixing modes can be conveniently switched according to different stages of fracture healing, secondary operation is not needed, and the fracture healing environment is optimized.

This invention provides a rapid positioning and clamping device for orthopedic surgery. The device includes a reflective positioning component, a reflective array fixation clamp component, and a bone pin fixation clamp component. The reflective positioning component includes a reflective positioning array, a first fastening magnet, and an array connector. The reflective array clamp component includes a spherical adjustment component, an array fixing base, a second fastening magnet, a magnet cover, a magnet locking screw, a first spring front-end fixing ball, a first spring, a first spring cover, and a connecting rod. The bone pin fixation clamp component includes a first bone pin clamp outer frame, a second bone pin clamp outer frame, a cylindrical support component, a third spring, a fixing screw, a second spring front-end fixing ball, a second spring, a second spring cover, a bone pin, and a bone pin fixing screw. The rapid positioning and clamping device provided by this invention allows for rapid installation and removal of the reflective positioning component, and allows for rapid adjustment of the reflective positioning component's position during surgery.

The utility model relates to an external fixing frame for treating hallux valgus through plane orthopedic treatment, which is fixed on a phalanx and comprises a fixing section, a transverse slide rail and a correcting section, the fixed section comprises a first vertical slide rail and a first bone needle; the first bone needle is arranged on the first vertical slide rail; the transverse sliding rail is arranged on the first vertical sliding rail in a sliding mode. The correction section comprises a second vertical slide rail and a second bone needle; the second vertical slide rail is arranged on the transverse slide rail in a sliding manner; the second bone needle is arranged on the second vertical slide rail; the first vertical sliding rail and the transverse sliding rail both protrude towards the side away from the phalanx and are bent in an arc shape. Through the first vertical sliding rail, the second vertical sliding rail and the transverse sliding rail, the position angle of the first bone needle and the position angle of the second bone needle are flexibly adjusted, the freedom degree of the external fixing frame for plane orthopedic treatment of hallux valgus is increased, higher flexibility and effectiveness are provided for treatment, and the rehabilitation requirement of a patient can be better met.

The application relates to the field of medical devices, in particular to a plaster device for bone traction needle hole nursing, which comprises a bone traction needle, a sticking base layer and an adjusting cylinder, one end of the adjusting cylinder is fixedly connected with a locking assembly used for fixing the adjusting cylinder on the bone traction needle, one end of the adjusting cylinder away from the locking assembly is provided with a liquid collecting groove, one side of the liquid collecting groove close to the locking assembly is provided with a bone needle channel penetrating through the locking assembly; a replacement ring is slidably matched with the outer surface of the adjusting cylinder, one end of the replacement ring is fixedly connected with a protective layer, and the protective layer is detachably connected with the sticking base layer; one end of the adjusting cylinder away from the locking assembly is provided with a drainage assembly used for guiding the liquid in the liquid collecting groove to flow to the protective layer; and the adjusting cylinder is internally provided with a ventilation assembly used for guiding the gas in the liquid collecting groove to exchange with the outside after passing through the protective layer. The detachable connection of the protective layer and the sticking base layer is used, the sticking base layer does not need to be torn off when the protective layer is replaced, and the discomfort of the patient is reduced.

The invention relates to the technical field of orthopedic surgical instruments, in particular to a bone connecting and fixing assembly for fixing a small-size fracture block. Firstly, a guide pipe of a guide fixing piece with a connecting part is aligned with a bone block, then the bone block and a connecting bone are drilled through the guide pipe, and a first drilled hole is obtained; the bone needle slightly retreats, but most of the bone needle is left in the first drill hole, so that the bone block is connected to the connecting bone; the guide pipe is lifted to form a certain space with the fracture block, and a bone needle surrounding the space between the bone block and the guide pipe is inserted into the bending auxiliary part; bending the bone needle by using a guide pipe to be parallel to the connecting bone, withdrawing the bending auxiliary piece, continuously inserting or knocking the bone needle into the connecting bone through the bone block to enable the guide pipe to be close to and in contact with the connecting bone, drilling the connecting bone through the connecting part to obtain a second drill hole, penetrating a connecting piece through the connecting part and embedding the connecting piece into the second drill hole to obtain a second drill hole; the whole guide fixing piece and the bone needle are stably fixed to the connecting bone, and stable fixation of a small-size fracture block is achieved.

The present application relates to a kind of bone traction automatic drill, including base, positioning ring and automatic hammer device, positioning ring is fixedly arranged on base, positioning ring is used to place the lower leg of patient, and fixed rod is installed on positioning ring and can be opened or closed;At least one bone needle enters the hole on the side of one side of positioning ring, at least one bone needle exits the hole on the side of the other side of positioning ring, and bone needle exits the hole and bone needle enters the hole same number and one-to-one coaxial correspondence;Automatic hammer device is installed on base, and automatic hammer device includes hammer frame, hammer shaft, hammer head, damping cylinder and reciprocating drive mechanism.The present application is ingenious in structure, and reasonable in design, by setting base, positioning ring and automatic hammer device, positioning ring is used to place the lower leg of patient, can make patient lower leg keep stable in bone traction drilling process;Automatic hammer device can hit the tail end of bone needle multiple times quickly, and efficiently and accurately complete the operation of bone needle driving in.

The invention discloses rhizoma coptidis toothpaste containing microneedles. The rhizoma coptidis toothpaste is prepared from the following components in parts by weight: 40 to 50 parts of a humectant, 20 to 30 parts of a friction agent, 1 to 2 parts of a thickening agent, 3 to 4 parts of a foaming agent, 0.1 to 0.3 part of a sweetening agent, 0.1 to 1 part of a rhizoma coptidis extract, 0.1 to 1 part of sponge spicules, 0.2 to 0.6 part of menthol, 0.2 to 0.6 part of peppermint oil, 0.1 to 0.6 part of fruit essence, 0.1 to 0.2 part of a preservative and 20 to 30 parts of ultrapure water, wherein the coptis chinensis extract is a 70% ethanol extract of coptis chinensis. The natural sponge spicule is introduced into a traditional Chinese medicine toothpaste system for the first time, adsorption slow release and physical cleaning effects generated by a porous structure of the natural sponge spicule are utilized to cooperate with heat clearing and fire purging effects of traditional coptis chinensis, and the toothpaste has the effects of cleaning teeth, relieving gingival discomfort and relieving oral cavity internal heat.

The invention discloses a knee joint osteotomy guide plate and a use method thereof, and relates to the field of knee joint replacement tools, the knee joint osteotomy guide plate comprises a thighbone osteotomy guide plate, the thighbone osteotomy guide plate comprises a thighbone guide plate main body and a thighbone insertion block, the thighbone guide plate main body and the thighbone insertion block are in insertion fit, and the thighbone guide plate main body is provided with a first binding surface, a first spicule fixing hole and a thighbone osteotomy groove; a second binding surface is arranged on the thighbone insertion block, and the first binding surface and the second binding surface are used for being attached to the thighbone surface or the thighbone osteophyte; the tibia osteotomy guide plate comprises a tibia guide plate main body and a tibia insertion block, the tibia guide plate main body and the tibia insertion block are matched in an inserted mode, the tibia guide plate main body is provided with a third attaching face, a second bone needle fixing hole and a tibia osteotomy groove, the tibia insertion block is provided with a fourth attaching face, and the third attaching face and the fourth attaching face are used for being attached to the tibia face or the tibia osteophyte; according to the osteotomy guide plate, an osteotomy plane is accurately positioned by utilizing a plurality of parts or osteophyte with obvious knee joint bone tissue characteristics, so that the osteotomy accuracy is improved, and the surgical risk can be reduced.

The invention belongs to the technical field of medical apparatus and instruments, particularly relates to a bone needle fracture passivation device and a use method thereof, and aims to solve the problems of low bone needle fracture passivation efficiency, difficulty in angle control, dust pollution and inconvenience in cleaning in a traditional method. According to the technical scheme, a grinding rod is arranged to grind bone needle fractures, and dust is prevented from polluting the operation environment through a dust collecting structure such as cooperation of a cup-shaped shell and a protective cover or cooperation of the cup-shaped shell and a grinding box; the bone needle is stably clamped by the clamping structure; the cleaning structure removes dust on the outer wall when the spicules are taken out; the driving structure synchronously drives grinding and cleaning operation; various structures are matched, the functions of efficient grinding, dust collection and automatic cleaning are achieved, bone needle fractures are passivated, and the operation efficiency and quality are improved.

The present invention relates to a pelvic clamping device using pneumatic variable-stiffness bone needles. The device comprises a pneumatic variable-stiffness module, an affected-side ball-hinged support module, and a healthy-side clamping module. The pneumatic variable-stiffness module is driven by pneumatic artificial muscles that are staggered horizontally and vertically. The stiffness of the bone needles is actively regulated by controlling the air pressure of the pneumatic artificial muscles, thereby achieving stable clamping of the bone needles, improving intraoperative stress distribution, and avoiding uneven deformation or stress concentration between the two bone needles during surgery. The affected-side ball-hinged support module adopts a ball-hinged structure for connection to the pneumatic variable-stiffness clamping module. The healthy-side clamping module is used to clamp the bone needles inserted into the healthy-side pelvis. The present invention has significant advantages such as a compact structure, convenient stiffness adjustment, stable clamping, and easy assembly and disassembly.

The application discloses a combined external fixation support for bone fracture and a use method thereof, and belongs to the technical field of medical devices, which comprises end support frames and support group frames, the end support frame comprises a first mounting plate, connecting rods and connecting holes, a plurality of connecting rods are fixedly and uniformly arranged in a circumferential array on the lower side of the first mounting plate, the connecting rods are provided with the connecting holes at equal intervals, the plurality of support group frames are connected through combination assemblies, the connecting rods and the support group frames are connected through the combination assemblies, the support group frames are located between the two first mounting plates, a plurality of bone pin supports for fixing bone pins are arranged on the first mounting plate and the support group frames, the bone pin support comprises a mounting assembly and a locking assembly, the mounting assembly is detachably mounted on the first mounting plate and the support group frame through a screw rod and a nut, and the locking assembly is mounted on the mounting assembly. Through the above mode, the deviation stress generated in the process of locking the bone pin is avoided, the stress is prevented from acting on the bone pin and the fractured bone of the patient, and the pain of the patient is increased.

The invention relates to a fracture reduction robot and a fracture reduction robot system. The fracture reduction robot comprises a fixed ring, a movable ring and at least three power arms, the fixed ring and the movable ring are both used for being fixed to the bone of a patient through bone needles. The same ends of all the power arms are fixedly connected with the fixing ring; the other ends of all the power arms are connected with the movable ring in a relatively movable manner; at least one actuating structure is arranged in each power arm; the at least three power arms are used for driving the movable ring to rotate relative to the fixed ring and get close to or away from the fixed ring.

The utility model relates to a ball head steering bone needle fixing device and an orthopedic surgery robot, and the ball head steering bone needle fixing device comprises a bone needle fixer which is provided with a bone needle hole; the ball head connecting joint comprises a ball head and a ball head fixing seat matched with the ball head, one of the ball head and the ball head fixing seat is connected with the spicule fixator through a connecting rod, and the other one of the ball head and the ball head fixing seat is connected with the optical tracker through the other connecting rod, so that the optical tracker can adjust the position in all directions around the ball head; the optical tracker can solve the technical problems that in the prior art, the position of the optical tracker is fixed, the optical tracker cannot be flexibly adjusted to any position expected by a doctor according to operation requirements, operation space is limited, and operation flexibility is affected.

The invention relates to the field of medical instruments, in particular to an automatic bone needle tensioning device. The bone needle automatic tensioning device comprises the clamping mechanism and the stretching mechanism, the clamping mechanism is used for clamping a bone needle, the stretching mechanism is used for stretching the bone needle, meanwhile, the driving motor drives the stretching mechanism to act through the speed reducing mechanism, in this way, automatic tensioning can be achieved, and operation is more convenient compared with a manual mode.

The invention discloses a bone fracture plate. The bone fracture plate comprises a tibia platform plate body, and the tibia platform plate body comprises a head part and a rod part; the head part is provided with a plurality of head spicule positioning holes and a plurality of head locking holes, and the plurality of head spicule positioning holes and the plurality of head locking holes are arranged along the width direction of the head part; the rod part is provided with a rod pressurizing hole and a plurality of rod locking holes; the area where the head locking hole is located is located between the area where the skull needle positioning hole and the area where the rod locking hole is located. The number of the rod locking holes is at least two, one rod locking hole is a first rod locking hole, and the other rod locking hole is a second rod locking hole. The axis of the first rod locking hole, the axis of the second rod locking hole and the axis of the head locking hole form a triangular structure. The bone fracture plate has the anti-rotation performance and higher stability, is precisely attached to the complex bone form of the outer side of a tibial plateau, can be combined with a locking bone fracture plate for fibula fracture, and is fixed in multiple directions.

The invention discloses a device for treating diabetic foot through ilium transport, which comprises a first transport plate and a second transport plate, the first transport plate and the second transport plate are connected through a transport stud, and the lower end of the transport stud is rotatably connected with the inside of the first transport plate left and right and fixedly connected with the inside of the first transport plate up and down. The carrying stud is in meshed connection with the second carrying plate through threads, first detachable bone needles are arranged at the two ends of the first carrying plate respectively, second detachable bone needles are arranged at the two ends of the second carrying plate respectively, and the problems that according to an existing operation for treating the diabetic foot through tibia transverse carrying, in the postoperative functional exercise and walking process of a patient, the patient is prone to disengagement and disengagement are solved. The problem of fracture of the tibia due to the fact that the local loading capacity is reduced after the tibia is windowed is solved, and the problem that the contact part of the bone needle and the shank is easily infected due to friction between the bone needle and the muscle on the tibia when the patient walks is also solved.

The utility model discloses a hand bone external use fixing device which comprises two bottom plates, an adjusting fixing structure is arranged at the upper ends of the two bottom plates, and a positioning structure is arranged between the two bottom plates. The adjusting and fixing structure comprises two supporting pillows, four adjusting grooves, four partition plates and eight fixing assemblies, according to the adjusting and fixing structure and the positioning structure, when the hand bone of a patient is externally fixed, the two arranged supporting pillows can be attached to the arm of the patient, and therefore the hand bone of the patient can be fixed through the adjusting and fixing structure and the positioning structure; according to different use requirements, the distance between the two supporting pillows can be adjusted, meanwhile, a lead screw adjusting mode is adopted, adjustment can be conducted according to different metal spicule positioning requirements, and the overall fixing effect of the metal spicules is guaranteed through the self-locking capacity of the lead screw.

The application discloses a medical high-strength titanium bone needle processing method, which comprises the following steps of material selection, upsetting and drawing processing, forging, grinding, square billet rolling, primary rod billet rolling, skin scraping and grinding, secondary rod billet rolling, wire drawing, annealing and high-frequency wire straightening. The titanium wire bone needle prepared by the application has a tensile strength greater than 1200 MPa, which is higher than that of a conventional titanium wire bone needle. The titanium bone needle prepared by the application can have a smaller outer diameter and ensure sufficient strength and smaller weight, so that more accurate treatment effect can be achieved, the excessive damage and discomfort caused by the treatment to the patient's body can be effectively reduced, the activity range of the patient after the treatment can be expanded, and the application can be widely applied to orthopedic treatment.

The application discloses a sponge bone needle with surface-adsorbed nanoparticles and a preparation method and application thereof, and comprises modified bee sponge bone needles with active silicon hydroxyl groups on surfaces as carriers and mesoporous silica nanoparticles loaded on the active silicon hydroxyl groups, and the average particle size of the mesoporous silica nanoparticles is 90-1000 nm. The sponge bone needle can pierce into the cuticle to open the skin barrier, and can be retained in the cuticle for a long time to form a large number of sustained microchannels (not less than 72 h), release the nanoparticles carrying more drugs, and enter the skin to release the drugs to play a role.

The application discloses a skeleton resetting device, a skeleton positioning method and device, computer equipment and a medium. The initial position coordinate system of a repaired skeleton before installation of a bone needle and the bone needle position coordinate system after installation of the bone needle are obtained, the initial position coordinate system and the bone needle position coordinate system are matched into one repaired coordinate system, the skeleton coordinate information and the bone needle coordinate information in the repaired coordinate system are added to the matching image of the repaired skeleton, and the matching image is displayed. The repaired skeleton image after matching and the coordinate information of each part of the repaired skeleton can be accurately and intuitively displayed, the existing skeleton positioning method in the prior art needs to continuously confirm multiple X-ray images, the mapping between the additional image and the actual position of the pelvis is not intuitive, the doctor needs to determine by experience, and the skeleton positioning is not accurate and the obtained skeleton coordinate information cannot be combined with the medical image of the repaired skeleton.

The invention relates to an electrically-driven external fixation support with manual adjustment and motion monitoring protection. The electrically-driven external fixation support comprises a near-end ring, a far-end ring, a telescopic supporting rod, a driving unit, a main control box, a secondary control box, a cable, a box supporting frame and a bone needle assembly. The near-end ring and the far-end ring are connected through the six telescopic supporting rods, the far-end ring is driven under cooperative control of the electric drive system, space six-degree-of-freedom movement is achieved, and the multi-degree-of-freedom adjusting requirements of malformation correction and fracture reduction traction are met. The telescopic supporting rod supports manual rapid adjustment and knob fine adjustment, and the device can be conveniently and rapidly matched with the size of the affected limb during initial installation. And the driving unit and the cable as well as the driving unit and the telescopic supporting rod adopt quick plugging connection structures, so that fault replacement or switching to a manual adjustment mode is facilitated, and the use flexibility and reliability are improved. In addition, a Hall sensor is arranged in the driving unit, redundancy monitoring and protection are carried out on the motion state of the telescopic supporting rod, and the safety of clinical application is improved.

The application provides a bone-cutting guide for knee joint replacement surgery navigation and a use method thereof. The bone-cuting guide comprises: a navigation array for calibrating the position of a saw blade in a navigation system; a saw blade fixing seat for fixing a bone needle and mounting the saw blade; a first direction adjusting structure for adjusting the movement of the saw blade fixing seat; and a bone needle for being fixed in a bone needle hole of the saw blade fixing seat. Compared with the prior art, the application can realize accurate positioning of the angle and position of bone cutting by calibrating the position of the saw blade in the navigation system in time. Compared with the scheme in which a doctor uses a traditional surgical tool to perform bone cutting, the bone-cuting guide and the bone-cutting method have high position accuracy and depend less on the experience of the doctor, and compared with the scheme in which bone cutting is performed by cooperation of full intelligent navigation technology and a mechanical arm, the application does not need the participation of the mechanical arm, the operation steps are simple, and the surgical cost is reduced.