19 results about "Bone transport" patented technology

A bone transport device for transporting a bone segment is provided. The bone transport device includes an elongated shaft, a tubular housing surrounding the elongated shaft, a slider slidably mounted on the elongated shaft within the housing, an actuator configured to axially slide the slider along a sliding segment of the elongated shaft, and a first cable portion fixedly connected to a bone connector located outside the tubular housing. The first cable portion is also fixedly connected to the slider within the tubular housing, and the first cable portion is configured to transmit a sliding force to the bone connector as the slider moves along the sliding segment of the elongated shaft. The bone transport device is characterized in that the sliding segment is encircled by a solid portion of the tubular housing, and the first cable portion passes through a first hole in a tube wall of the tubular housing. The invention also provides a bone transport device characterized in that the slider is rotationally fixed relative to the tubular housing. The invention also provides a method of transporting a bone segment using the bone transport device.

The application discloses a skull arc motion bone moving external fixing frame, which comprises a threaded flat rod, an extension device connected to one end of the threaded flat rod, connecting rods arranged at the ends of the threaded flat rod and the extension device away from each other, and rotating needle clamps arranged at the ends of the connecting rods, wherein the threaded flat rod is hinged to the extension device, the two connecting rods are perpendicular to the plane where the threaded flat rod and the extension device are folded at an angle, and the rotating needle clamps are coaxially connected to the connecting rods; the threaded flat rod is provided with a sliding block, the sliding block is slidably connected to the threaded flat rod, two advancing nuts are arranged on the threaded flat rod, and the advancing nuts are threadedly connected to the threaded flat rod; the extension device comprises a lead screw, a connecting head arranged at one end of the lead screw, an adjusting knob arranged on the lead screw, and an extension pipe, wherein the lead screw is fixedly connected to the connecting head, the adjusting knob is threadedly connected to the lead screw, the extension pipe is slidably connected to the lead screw, and the extension pipe is coaxially connected to the adjusting knob.

This utility model discloses an internal fixation bone transport system comprising a slide rail, pulleys, and titanium cable structure, including: an internal fixation bone transport guide plate assembly and an adjusting sleeve for the internal fixation bone transport system disposed on the internal fixation bone transport guide plate assembly. The adjusting sleeve for the internal fixation bone transport system includes: a fixed tube, a base tube threaded to both ends of the fixed tube, and an adjusting tube. The fixed tube is sleeved on the sleeve base of the internal fixation bone transport guide plate assembly, and a locking device is sleeved at the distal end of the fixed tube of the adjusting tube. This utility model uses pulleys and titanium cables to pull the bone to be transported, and achieves bone transport by pulling the titanium cable through a detachable screw-type adjusting sleeve. Compared with traditional external fixation bone transport, this can be completed within the patient's skin and flesh tissue, avoiding long-term wearing of external fixation braces, reducing the burden on the patient, and facilitating limb movement during bone transport.

The present invention discloses a cable-based bone transport device, which connects a first bone and a second bone through an intramedullary nail; a fixing assembly is fixed to the first bone and the second bone, and the middle is connected by a transport assembly; then the cable is passed through the skin through the inner (outer) side of the distal end of the second bone into the second medullary cavity, and then fixed to the outside of the distal bone cortex after entering the first medullary cavity, and the outer part of the cable is connected to the transport assembly; the first bone is cut into the first bone fixed by the fixing assembly and the transport bone segment dragged by the cable. The moving parts on the transport assembly are driven regularly to drive the cable, thereby driving the transport bone segment to gradually move closer to the second bone, so that the transport bone segment finally contacts the second bone, completing the bone transport. By dragging the cable to pull the transport bone segment closer to the second bone along the intramedullary nail, a good force line can be maintained to avoid deformity; the skin and soft tissue structure of the transport bone segment is not damaged; and the dragging transport method is simpler than the traditional method.

A bone transport device may include a first support member, a second support member, a plurality of first rods, a cable, and a plurality of actuator assemblies. The cable may be configured to be received through a first bone segment. The bone transport device may further include a second rod that is configured to extend through the first bone segment such that the cable abuts a portion of the second rod within the first bone segment. The plurality of actuator assemblies may be attached to the first support member or the second support member. Each of the plurality of actuator assemblies may include a body, a spool, and an actuator. The actuator may be configured to rotate the spool to wind the cable onto the spool and translate a second bone segment with respect to the first support member and the second support member.

This utility model belongs to the field of medical device technology, specifically disclosing an integrated bone transport internal fixation plate, including a fixation plate body with several through-holes in a composite threaded pattern. Kirschner wire holes are symmetrically located at both ends of the fixation plate body. A fixation post is mounted on the left side of the fixation plate body via a connecting frame, and several C-clamps are fitted onto the fixation post. This utility model uses the composite threaded holes in conjunction with bone screws to internally fix bone defects in patients. The number of fixation screws can be selected according to the patient's specific condition. Simultaneously, the C-clamps, which can rotate on the fixation post, fix the free bone segment, allowing the free bone segment to be effectively fixed while sliding along the fixation post, facilitating bone transport and further reducing the degree of tissue damage caused by bone transport surgery.

The application relates to a tibial transverse bone distraction device and relates to the technical field of medical instruments. The tibial transverse bone distraction device comprises a distraction plate, a first locking screw rod for being fixedly connected with a tibia is arranged on the distraction plate, and the first locking screw rod is in sliding connection with the distraction plate; a balloon groove is arranged on the side surface of the distraction plate, an inflatable balloon is arranged in the balloon groove, a connecting catheter for injecting and extracting contrast agent into the inflatable balloon is connected with the inflatable balloon; the connecting catheter is respectively connected with a contrast agent infusion mechanism and a pressure detection mechanism for monitoring the pressure in the inflatable balloon; and a second locking screw rod for being fixedly connected with an osteotomy block is further arranged on the distraction plate. The distraction plate in the application can be embedded in subcutaneous soft tissue, and after the wound is sutured, the bone wound exposure can be greatly reduced, the nail channel trauma on the subcutaneous soft tissue is also reduced, the infection risk is greatly reduced, and the healing effect of the operation is improved.

A system for bone transport is provided, the system comprising: an adjustable length implant configured for intramedullary placement and comprising a first end configured to be coupled to bone and a second end configured to be coupled to bone, wherein the first end and the second end are displaceable relative to each other along a longitudinal axis; and a driving element configured to be non-invasively activated to displace the first and second ends relative to one another along the longitudinal axis; and a support member having distal and proximal ends, wherein the support member includes a longitudinally extending slot disposed between the distal and proximal ends of the support member, the slot having opposing ends, wherein the slot is configured to pass an elongate anchor such that the elongate anchor is slidable between the first end and the second end of the slot.

Systems, methods, and devices for lateral bone transport. A transverse bone transport system may include a template for measuring and cutting a bone segment, and a distractor for moving the bone segment. The template may include a plate including an opening configured to fit a needle cannula. The channel may extend from an opening in the plate to one side of the plate. The distraction device may include a first beam, a second beam, and an actuator including a knob configured to rotate in a first direction to increase a distance between the first beam and the second beam, and to rotate in a second direction to decrease the distance between the first beam and the second beam.

The present invention provides a 3D printing method for an osteotomy guide plate for transverse tibial bone transport surgery, which relates to the technical field of medical auxiliary equipment and includes the following steps: S1: CT scanning to obtain continuous tomographic data, perform three-dimensional reconstruction, and measure the diameter of the tibial medullary cavity; S2: reconstruct the overall structure of the instrument, design a transport navigation module, make it a rectangular parallelepiped, and set two bone circular needle guide columns in the middle; S3: divide the bone transport navigation module into two parts in the middle, and design a rectangular array of holes; S4: set a reference plane, use the reference plane to obtain a two-dimensional projection of the tibial plateau articular surface contour, and design a continuous guide groove. The present invention accurately measures the bone block to be cut, and can determine the height during surgery, so that accurate osteotomy can be performed, and the area to be osteotomized can be precisely planned to avoid damaging surrounding tissues. Continuous osteotomy can be performed with high osteotomy efficiency, and can be matched with different instruments and different osteotomy techniques, protecting the skin to the greatest extent and reducing the wound surface.

The invention belongs to the technical field of medical instruments, and particularly relates to an electromagnetic intramedullary nail bone carrying device which comprises an intramedullary nail. The first electromagnet is fixedly mounted at the top end of the intramedullary nail; the second electromagnet is fixedly mounted at the bottom of the intramedullary nail; the permanent magnet is installed on the intramedullary nail in a sliding mode and fixedly connected with the sliding bone block, and the permanent magnet is located between the first electromagnet and the second electromagnet; the magnetic pole at the lower end of the first electromagnet is the same as that at the upper end of the permanent magnet; the magnetic pole at the upper end of the second electromagnet is the same as that at the lower end of the permanent magnet; the power supply mechanism is provided with a controller, the power supply mechanism is electrically connected with the first electromagnet and the second electromagnet, and the controller is used for controlling the magnitude of current supplied to the first electromagnet and the second electromagnet by the power supply mechanism. The invention aims to solve the problem that the control precision is reduced due to the structural defects of the existing bone carrying device.

This invention discloses a device and control method for rehabilitation exercises after bone transport surgery, including a support frame, a sliding plate, a foot pedal assembly, and a telescopic device. The support frame has a groove and a receiving notch; the sliding plate is slidably disposed within the receiving notch; the foot pedal assembly includes a pedal and a fixing frame, and the actuating end of the first telescopic device is connected to the pedal via a second hinge to drive the pedal to rotate in the dorsiflexion direction and / or plantarflexion direction around the first hinge. The tilt sensor is used to measure the angle between the support plane of the pedal and the horizontal plane, enabling patients to perform ankle joint functional exercises in the early postoperative period with the affected limb completely weightless, avoiding ankle stiffness caused by prolonged bed rest or immobilization. This device has wide applicability and broad application prospects.

This utility model belongs to the field of medical device technology, specifically disclosing a split-type bone transport internal fixation plate, including a fixation plate with several through-holes evenly spaced on it. Kirschner wire holes are located at both ends of the fixation plate. Several adjusting sleeves are fitted onto the fixation plate, each sleeve engaging with the fixation plate through internal holes. The width of the holes is greater than the width of the fixation plate. A through-hole cylindrical hole is located on the left side of each adjusting sleeve. A common guide cylinder is fitted into the cylindrical holes on the adjusting sleeves, and several C-clamps are fitted onto the guide cylinder. This utility model uses bone screws to fix the fixation plate to both ends of the bone defect within the patient's body. The rotatable C-clamps allow for more effective fixation of free bone segments. The distance between the free bone segments and the bone fixed by the fixation plate can be adjusted, facilitating flexible adjustment of the spacing of the free bone segments during bone transport surgery, resulting in more accurate tissue growth for the patient.

The invention relates to a bone transport system for a bone (4) comprising a first bone portion (4.4), a second bone portion (4.5) and at least a first bone segment (4.1) arranged between both bone portions (4.4, 4.5). The system (100) comprises a hollow carrier (3) configured for being secured to at least one of the bone portions (4.4, 4.5); at least one pulley (6) to be arranged inside the carrier (3); a first tension line (5.1) associated with the pulley (6) and secured to the first bone segment (4.1); and a driving line (7) associated with the pulley (6) and with the tension line (5.1) such that it causes the transport of the bone segment (4.1) when actuated.

A system, method, and apparatus for lateral bone transport. The lateral bone transport system may include a template for measuring and cutting a portion of bone, and a distractor for moving this portion. The template may include a plate including an opening configured to fit a pin sleeve. A channel may extend from the opening in the plate to the side of the plate. The distractor may include a first beam, a second beam, and an actuator including a knob configured to rotate in a first direction to increase the distance between the first beam and the second beam, and to rotate in a second direction to decrease the distance between the first beam and the second beam.

The invention belongs to the technical field of bone transport, and particularly discloses an internal fixation bone transport system integrating high-precision track guiding and non-cutting technologies. According to the internal fixation bone moving system, the internal fixation steel plates are fixed to healthy bone shafts at the upper end and the lower end of an osteotomy block, then bone screws penetrate through the fixing holes to connect the sliding blocks with the osteotomy block, and under the reversing action of the pulleys, the traction adjusting mechanism pulls the lower titanium cable to drive the sliding blocks to move, so that the osteotomy block can be moved; in the process, only the through pipe penetrates out of the skin tissue, other parts are all located in the skin tissue, secondary injury to a patient in the moving process is effectively reduced, bone moving is completed in the body, the patient does not need to wear an external fixing frame for moving for a long time, and the comfort level of the patient is improved while the appearance is attractive. And an upper titanium cable and a lower titanium cable are arranged, the sliding block can move upwards or downwards, and when the moving amount is too large, the osteotomy block can be retreated, so that the moving operation is safer and more accurate.

The skin protector of the external fixing frame for bone transport in the orthopedics department comprises a first protection main body II, a second protection main body II is fixedly installed on the side wall face of the first protection main body II, and the first protection main body II and the second protection main body II form a cylindrical structure. The first protection main body II comprises two fixing rings I and a semicircular cylinder I, the semicircular cylinder I is fixedly connected between the two fixing rings I, and a plurality of round holes are uniformly formed in the surface of the semicircular cylinder I. The second protection main body II comprises two fixing rings II and a semicircular cylinder II, the semicircular cylinder II is fixedly connected between the two fixing rings II, and a plurality of round holes are uniformly formed in the surface of the semicircular cylinder II. The steel needle fixing device has the advantages that a steel needle can be fixed, damage to the skin of a needle passage caused by shaking or friction stimulation of a patient is effectively prevented, meanwhile, the affected part of the patient can be protected, secondary damage to a wound caused by sweat erosion is prevented, and the safety performance is high.