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CN-122005046-A - Device for fracture reduction fixation and navigation and application method thereof

CN122005046ACN 122005046 ACN122005046 ACN 122005046ACN-122005046-A

Abstract

The invention discloses a device for fracture reduction fixation and navigation and a use method thereof, and in particular relates to the technical field of medical appliances, comprising a first spherical member, a second spherical member, a first spherical member and a second spherical member, wherein the first spherical member is arranged on the screw rod, and the adjacent first spherical members are connected through a connecting sleeve; the screw rod penetrates through the base and is in threaded connection with a second spherical part and a positioning part which are used for clamping the base, a first ball socket matched with the second spherical part is formed on one side of the base, a spherical crown-shaped bulge is formed on the other side of the base, and a second ball socket matched with the positioning part is formed on the positioning part. According to the invention, through the cooperation of the second spherical member, the first ball socket and the spherical crown-shaped bulge with the second ball socket and the superposition of the three ball centers, the multi-degree-of-freedom universal adjustment of the fixing frame is realized, the traction reset, mechanical fixing and physical navigation functions are integrated, the operation flow is simplified, and the single operation can be realized.

Inventors

  • SHANG XIFU
  • LI GUOYUAN
  • XU MINGYOU
  • LI LI

Assignees

  • 安徽省立医院(中国科学技术大学附属第一医院)

Dates

Publication Date
20260512
Application Date
20260327

Claims (10)

  1. 1. A device for fracture reduction, fixation and navigation, comprising: The support rods (100) comprise a screw rod (110) and first spherical members (120) which are connected with the outer surface of the screw rod (110) in a threaded mode, wherein two adjacent first spherical members (120) are fixedly connected through a connecting sleeve (200); The fixing frame (300) comprises a base (310) and a fixing seat (320) fixedly connected with the base (310), wherein a mounting groove (321) which penetrates through and is used for guiding the implantation direction of steel nails is formed in the fixing seat (320); The screw rod (110) passes through the base (310), a second spherical part (400) and a positioning part (500) for clamping the base (310) are connected with the outer surface of the screw rod (110) in a threaded mode, the outer surface of the second spherical part (400) is set to be a spherical surface, a first ball socket (311) matched with the second spherical part (400) is arranged on one side of the base (310) facing the second spherical part (400), the first ball socket (311) is sleeved outside the second spherical part (400), a spherical crown-shaped protrusion (312) is arranged on one side of the base (310) facing the positioning part (500), a second ball socket (510) matched with the spherical crown-shaped protrusion (312) is arranged on one side of the positioning part (500) facing the base (310), and the second ball socket (510) is sleeved outside the spherical crown-shaped protrusion (312); The center line of the screw (110) is respectively overlapped with the center line of the second spherical member (400) and the center line of the positioning member (500) along the extending direction of the screw (110), and the center of the second spherical member (400) and the center of the first ball socket (311) are overlapped with the center of the second ball socket (510).
  2. 2. The device for fracture reduction, fixation and navigation according to claim 1, wherein the connecting sleeve (200) comprises two clamps (210) which are matched with each other, the two clamps (210) are connected through at least two locking screws (220), spherical crown-shaped clamping grooves (211) matched with the first spherical member (120) are formed on the sides, close to each other, of the two clamps (210), the depth of each spherical crown-shaped clamping groove (211) is smaller than the radius of the first spherical member (120), and the two matched spherical crown-shaped clamping grooves (211) are sleeved on the first spherical member (120).
  3. 3. A device for fracture reduction, fixation and navigation according to claim 2, characterized in that the outer surface of the first ball-shaped member (120) and the outer surface of the second ball-shaped member (400) are provided with receptacles (410) for assisting rotation.
  4. 4. A device for fracture reduction, fixation and navigation according to claim 2, characterized in that at least two spherical crown shaped clamping grooves (211) are provided on each clamp (210).
  5. 5. The device for fracture reduction, fixation and navigation according to claim 1, wherein the center of the spherical crown-shaped bulge (312) is provided with a through adjusting through groove (313), the adjusting through groove (313) is communicated with the first ball socket (311) and the second ball socket (510), the screw (110) is arranged in the adjusting through groove (313) in a penetrating way, and the diameter of the adjusting through groove (313) is larger than that of the screw (110).
  6. 6. A device for fracture reduction, fixation and navigation according to claim 1, characterized in that the outer surface of the first ball member (120), the outer surface of the second ball member (400) and the outer surface of the spherical crown-shaped protrusion (312) are each provided with a rough surface.
  7. 7. The device for fracture reduction, fixation and navigation according to claim 1, wherein the fixing base (320) is C-shaped or semi-circular, the mounting groove (321) is formed along the arc direction of the fixing base (320), and the opening direction of the mounting groove (321) is directed to the center direction of the fixing base (320).
  8. 8. A method of using a device for fracture reduction, fixation and navigation comprising a device for fracture reduction, fixation and navigation according to any of claims 1-7, characterized in that it comprises the steps of: traction reduction, namely adjusting the relative angles of two adjacent support rods (100) through the connecting sleeve (200), so that the support rods (100) drive the far and near ends of the fracture to carry out multidimensional traction, and the reduction of the fracture is completed; Rotating the positioning piece (500) and/or the second spherical piece (400), loosening the positioning piece (500) and the second spherical piece (400) from the base (310), enabling the spherical crown-shaped bulge (312) of the base (310) to rotate in the second ball socket (510), simultaneously enabling the first ball socket (311) of the base (310) to rotate around the second spherical piece (400), and adjusting the fixing frame (300) to a preset angle to enable the fixing frame (300) to be matched with a fracture anatomical form; locking the angle of the fixing frame (300) by rotating the positioning piece (500) and/or the second spherical piece (400) to enable the positioning piece (500) and the second spherical piece (400) to move relatively along the axial direction of the screw (110) and clamp the base (310), and locking the angle of the fixing frame (300); And (3) implanting steel nails for fixation, namely implanting steel nails into the fracture end by using the mounting groove (321) on the fixing seat (320) as navigation to finish the fixation of the fracture.
  9. 9. The method of claim 8, wherein in the step of adjusting the angle of the mount (300), the second ball member (400) is rotated in an assisted manner by inserting a tool into a receptacle (410) in the outer surface of the second ball member (400) to loosen or clamp the base (310).
  10. 10. The method of claim 8, wherein in the step of distraction reduction, the two clamps (210) clamp the first ball member (120) by tightening a locking screw (220) on the connection sleeve (200), locking the angle of rotation of the first ball member (120) within the connection sleeve (200).

Description

Device for fracture reduction fixation and navigation and application method thereof Technical Field The invention relates to the technical field of medical appliances, in particular to a device for fracture reduction fixation and navigation and a use method thereof. Background Fractures, particularly fractures of long bones of the extremities (e.g., femur), are known to be one of the most common trauma in orthopedics clinics. External fixation frames are the preferred, non-alternative treatment options for cases with severe soft tissue injury, open fractures, or poor local conditions. The basic principle of the traditional external fixation technology, such as an Ilizarov annular external fixation frame or a unilateral external fixation frame, is to implant a steel needle at the far and near ends of a fracture end and connect an external rigid supporting structure to construct a stable mechanical system so as to maintain alignment of the fracture end and create conditions for fracture healing. However, existing external fixation techniques have significant limitations in clinical applications. Firstly, the existing device has single function, is mainly used for fixation, and accurate reduction of fracture is finished by independent instruments such as a traction bed, bone holding forceps and the like, and the reduction and fixation operation are separated, so that the flow is complex and the time consumption is long. Secondly, the complex structure represented by the Ilizarov ring frame consists of a plurality of rings, rods and a large number of hinges, the adjustment dimension is limited, and particularly when complex fracture accompanied by multi-dimensional displacement such as shrinkage, angulation, rotation and the like is treated, flexible and rapid universal adjustment is difficult to realize, doctors often need to carry out complicated combined adjustment and even need to repeatedly disassemble and assemble, so that the surgical wound and infection risk are increased, and extremely high requirements are put forward on the operation experience of the doctors. In order to solve the problems of separation of the reduction and fixation functions and limited adjustment dimension in the prior art, the invention provides a device for fracture reduction fixation and navigation and a use method thereof, the device is integrated with three functions of universal traction reduction, mechanical fixation and physical navigation into a whole so as to simplify the operation flow, realize multidimensional adjustment, reduce soft tissue injury and improve the accuracy of fracture reduction. Disclosure of Invention In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a device for fracture reduction fixation and navigation and a method of using the same, which solve the above-mentioned problems of the prior art. In order to achieve the above purpose, the invention provides a technical scheme that the device for fracture reduction, fixation and navigation comprises: The support rods comprise a screw rod and first spherical members which are connected to the outer surface of the screw rod in a threaded manner, and two adjacent first spherical members are fixedly connected through a connecting sleeve; The fixing frame comprises a base and a fixing seat fixedly connected with the base, wherein the fixing seat is provided with a through mounting groove for guiding the implantation direction of steel nails; The screw rod passes through the base, a second spherical part and a positioning part are in threaded connection with the outer surface of the screw rod, the outer surface of the second spherical part is provided with a spherical surface, a first ball socket matched with the second spherical part is arranged on one side of the base, which faces the second spherical part, of the base, a spherical crown bulge is arranged on one side of the base, which faces the positioning part, a second ball socket matched with the spherical crown bulge is arranged on one side of the positioning part, and the second ball socket is sleeved on the outer part of the spherical crown bulge; The center line of the screw rod is respectively overlapped with the center line of the second spherical member and the center line of the positioning member along the extending direction of the screw rod, and the center of the second spherical member, the center of the first ball socket and the center of the second ball socket are overlapped. Further, the connecting sleeve comprises two clamps which are matched with each other, the two clamps are connected through at least two locking screws, spherical crown-shaped clamping grooves matched with the first spherical member are formed in one sides, close to each other, of the two clamps, the depth of each spherical crown-shaped clamping groove is smaller than the radius of the first spherical member, and the two matched spherical crown-shaped clam