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CN-121987288-A - Acetabular bone file capable of continuously adjusting size

CN121987288ACN 121987288 ACN121987288 ACN 121987288ACN-121987288-A

Abstract

The invention relates to the technical field of orthopedic surgical instruments, in particular to an acetabular file capable of continuously adjusting the size, which is used for solving the problem that the existing acetabular file is difficult to adjust the size, the acetabular file comprises a transmission rod, the end part of the transmission rod is rotationally connected with a cutter seat, a plurality of blades are arranged on the cutter seat in an annular array, the blades are combined together to form a hemispherical acetabular file head, and the blades can synchronously and radially slide on the cutter seat to synchronously approach or separate from each other, so that the size of the hemispherical acetabular file head is adjusted; when the acetabulum is used for facing acetabulum with different sizes, the blades are synchronously adjusted to linearly move towards or away from the center of the cutter seat, so that the diameter of a hemispherical cutter head formed by the blades can be changed, and the acetabulum with different sizes or different polishing requirements can be met, and therefore, during operation, the acetabulum is not required to be used alternately.

Inventors

  • MENG DE
  • CHEN RUNBIN
  • WANG JINLI
  • Yang Yuanpan
  • HUANG JUNCHAO

Assignees

  • 蒙德

Dates

Publication Date
20260508
Application Date
20260309

Claims (10)

  1. 1. The acetabular file capable of continuously adjusting the size is characterized by comprising a transmission rod (100), wherein the end part of the transmission rod (100) is rotationally connected with a cutter holder (200), a plurality of blades (320) are annularly arranged on the cutter holder (200), the blades (320) are combined together to form a hemispherical acetabular file head, and the blades (320) can synchronously and radially slide in the cutter holder (200) to synchronously approach or separate from each other, so that the size of the hemispherical acetabular file head is adjusted.
  2. 2. The acetabular bone file of claim 1, wherein the end of the transmission rod (100) is axially and slidably connected with a conical block (310), a plurality of blades (320) are fixedly connected with a first sliding block (321) and a second sliding block (322), a plurality of sliding grooves matched with the first sliding block (321) are formed in the tool apron (200), a plurality of sliding grooves matched with the second sliding blocks (322) are formed in the side wall of the conical block (310), and the conical block (310) can drive the plurality of blades (320) to synchronously approach or separate when axially sliding.
  3. 3. The acetabular file according to claim 2, wherein the transmission rod (100) is internally and threadedly connected with a threaded rod (300), the end of the threaded rod (300) is rotationally connected with the conical block (310), and the threaded rod (300) can axially move on the transmission rod (100) when rotated, so as to drive the conical block (310) to axially move.
  4. 4. The acetabular file according to claim 3, wherein the tail end of the transmission rod (100) is rotatably connected with an adjusting ring (330), the threaded rod (300) is inserted into the adjusting ring (330), and the threaded rod (300) is slidably connected with the adjusting ring (330) through a key, so that the adjusting ring (330) can drive the threaded rod (300) to synchronously rotate, and the threaded rod (300) can axially slide in the adjusting ring (330).
  5. 5. The acetabular file according to claim 4, wherein the adjusting ring (330) is provided with a display window (333), and an indication scale is arranged at the tail end of the transmission rod (100) and can be displayed through the display window (333).
  6. 6. The acetabular file according to claim 5, wherein the tail end of the transmission rod (100) is fixedly connected with a handle (110) through two symmetrical semi-cylinders, two arc-shaped grooves are formed in the adjusting ring (330), and the two semi-cylinders are respectively inserted into the two arc-shaped grooves and can slide relative to the corresponding arc-shaped grooves.
  7. 7. The acetabular file according to claim 6, wherein a first positioning rod (331) is slidably connected to one surface of the handle (110) facing the adjusting ring (330), a spring is connected between the first positioning rod (331) and the handle (110), a round angle is formed at the end of the first positioning rod (331), and a plurality of first grooves (332) which are arranged in an annular array and matched with the first positioning rod (331) are formed in the end surface of the adjusting ring (330).
  8. 8. The acetabular file capable of continuously adjusting size according to claim 7, wherein a second positioning rod (340) is connected to the first sliding block (321) in a sliding manner, a spring is connected between the second positioning rod (340) and the first sliding block (321), a round angle is arranged at the end part of the second positioning rod (340), and a plurality of second grooves (341) matched with the second positioning rod (340) are formed in a linear array in a sliding groove of the tool apron (200).
  9. 9. The acetabular file capable of continuously adjusting size according to claim 8, wherein an annular groove (420) is formed in the tool holder (200), a plurality of blades (430) are installed on an annular array of the inner wall of the annular groove (420), a plurality of air openings (410) are formed in the end portion of the transmission rod (100), and the plurality of air openings (410) can blow the plurality of blades (430) so that the tool holder (200) rotates; The tail end of the handle (110) is provided with an interface (400), the interface (400) is used for being connected with an external high-pressure air source, and the transmission rod (100) and the handle (110) are jointly provided with an air channel which is communicated with the interface (400) and the air port (410).
  10. 10. The acetabular file according to claim 1, wherein the tool holder (200) is fixedly connected with a spherical mesh enclosure (210), and the spherical mesh enclosure (210) is positioned inside the hemispherical acetabular file.

Description

Acetabular bone file capable of continuously adjusting size Technical Field The invention relates to the technical field of orthopedic surgical instruments, in particular to an acetabular file capable of continuously adjusting the size. Background In the orthopedic clinical operation, hip joint related operations such as hip joint replacement operation, hip joint revision operation and the like are main means for treating severe pathological changes of the hip joint (such as femoral head necrosis, hip joint degeneration, acetabulum deformity and the like), and an acetabular file is used as a core medical instrument in the operation, and has the main functions of accurately filing and trimming the acetabular part of a patient, removing pathological cartilage, bone tissues and irregular bones, molding a hemispherical acetabular fossa matched with the acetabular prosthesis, providing a stable and fit installation basis for the implantation of the acetabular prosthesis, and directly influencing the stability and the adaptation degree of the prosthesis after the implantation and the function recovery effect of the hip joint of the patient after the operation. Currently, the acetabular files widely used in clinic are mainly divided into two major types of fixed size type and stepped adjustable size type, wherein the fixed size acetabular files are the most mainstream application form, the tool bit of the acetabular files is of an integrally formed hemispherical structure, each acetabular file only corresponds to a single fixed hemispherical diameter specification, the stepped adjustable size type acetabular files are of modularized combination or layered nested structures, only stepped size adjustment of limited gears can be realized, and continuous size adjustment cannot be realized. However, due to the obvious individual differences of the body types and the acetabular development conditions of different patients, the internal form of the acetabulum of the same patient may have irregularities, and the size of the acetabular rasp head needs to be adjusted in real time according to the actual size and the form of the acetabulum in the operation process so as to achieve the purpose of accurate trimming. On the one hand, the fixed size type acetabular bone file needs medical staff to prepare file heads with various different diameter specifications in advance, the file heads with different sizes need to be repeatedly detached and replaced according to the acetabulum trimming condition in the operation process, so that the preparation workload and the instrument cost of the operation instrument are increased, the operation time can be prolonged, the risk of bleeding and infection in the operation of a patient is increased, the continuity and the accuracy of the operation can be influenced by frequent replacement of the instrument, on the other hand, the stepped size type acetabular bone file can reduce the replacement times of the file heads, but only the size adjustment of a limited gear can be realized, continuous fine adjustment cannot be realized, the personalized form of the acetabulum is difficult to accurately adapt, the problem of excessive filing or insufficient trimming easily occurs, the fitting degree of an acetabular bone prosthesis and the acetabulum is further influenced, the long-term stability after the prosthesis is implanted is reduced, complications such as loosening and dislocation of the prosthesis can be even caused, and the postoperative recovery of the patient is influenced. Disclosure of Invention The invention provides an acetabular file capable of continuously adjusting the size, which solves the problem that the existing acetabular file is not easy to adjust the size. In order to alleviate the technical problems, the technical scheme provided by the invention is as follows: The utility model provides an acetabular bone file that can continuous adjustment size, includes the transfer line, the tip rotation of transfer line is connected with the blade holder, annular array is provided with a plurality of blades on the blade holder, a plurality of the blade is together to make up into hemispherical acetabular bone file head, a plurality of the blade can synchronous radial slip in the blade holder is in order to be close to each other or keep away from each other in step to adjust hemispherical acetabular bone file head size. Furthermore, the end part of the transmission rod is axially and slidably connected with a cone block, a plurality of blades are fixedly connected with a first sliding block and a second sliding block, a plurality of sliding grooves matched with the first sliding block are formed in the tool apron, a plurality of sliding grooves matched with the second sliding block are formed in the side wall of the cone block, and the cone block can drive a plurality of blades to synchronously approach or depart when axially sliding. Furthermore, the transmission rod is internally and