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CN-122003214-A - Orthopedics adapter

CN122003214ACN 122003214 ACN122003214 ACN 122003214ACN-122003214-A

Abstract

The orthopedic adapter is detachably coupled to a rotary power tool and includes a tool coupling part that receives a rotational force from the rotary power tool, a shaft that rotates in conjunction with a rotational direction of the tool coupling part, a first striker transferring part that rotates in conjunction with the shaft only when the shaft rotates in a first direction, a first striker transferring part that can move backward by rotation of the first striker transferring part, a second striker transferring part that rotates in conjunction with the shaft only when the shaft rotates in a second direction, a second striker that can move forward by rotation of the second striker transferring part, a force transmitting part that can move backward by contact with the first striker and can move forward by contact with the second striker, and a force adjusting part that can adjust a force applied by the second striker to the force transmitting part by adjusting an acceleration force by which the second striker moves forward.

Inventors

  • LI BINGZHOU

Assignees

  • 爱美迪克株式会社

Dates

Publication Date
20260508
Application Date
20250424
Priority Date
20240702

Claims (16)

  1. 1. An orthopedic adapter detachably coupled to a rotary power tool, comprising: A housing portion; a tool coupling portion that receives a rotational force from the rotary power tool; A shaft that rotates in conjunction with a rotation direction of the tool coupling part; a first striker transfer unit that rotates in conjunction with the shaft only when the shaft rotates in a first direction; a first striker which can be moved backward by rotation of the first striker transfer section; a second striker transfer section that rotates in conjunction with the shaft only when the shaft rotates in a second direction; a second striker, which can move forward by rotation of the second striker transfer section; A force transmitting portion movable backward by contact with the first striking portion and movable forward by contact with the second striking portion, and And a force adjustment unit that can adjust the force applied to the force transmission unit by the second striking unit.
  2. 2. The orthopedic adapter of claim 1, wherein the force adjustment portion comprises: an outer ring mounted on an outer side of the housing portion, rotatable relative to the housing portion; An inner ring located inside the housing portion and rotating in association with rotation of the outer ring; a connecting pin connecting the outer ring and the inner ring to each other, and A second inner housing fixed to the housing portion between the outer ring and the inner ring inside the housing portion, and having a multi-stage needle hook hole through which the connection pin passes, a plurality of hook grooves being formed in the multi-stage needle hook hole, the connection pin being selectively captured in the hook grooves, and the multi-stage needle hook hole being formed to be inclined with respect to a central axis of the shaft.
  3. 3. The orthopedic adapter according to claim 2, wherein the second striker transfer portion comprises: A second elastic member having one end supported by the inner ring and the other end supported by the second striking portion, and A second body portion having a second through hole through which the shaft passes, a plurality of second screw thread portions, a second screw thread recessed portion formed between the plurality of second screw thread portions, and a second longitudinal groove portion extending in a longitudinal direction.
  4. 4. The orthopedic adapter according to claim 1, wherein the first striker transfer portion comprises: a first elastic member having one end supported by a first spring supporting member fixed to the housing portion and the other end supported by the first striking portion, and A first main body portion having a first through hole through which the shaft passes, a plurality of first screw thread portions, a first screw thread recessed portion formed between the plurality of first screw thread portions, and a first longitudinal groove portion extending in a longitudinal direction.
  5. 5. The orthopedic adapter according to claim 3, wherein: The shaft has a second shaft threaded portion and a second shaft recessed portion alternately positioned in a circumferential direction thereof; the second body portion having a second ratchet portion; The second ratchet part has a second hook part and a second pressing part for applying elastic force in the direction of always pressing the second hook part, and The second hook is capable of being caught in the second shaft recess portion, and is not disengaged from the second shaft recess portion when the shaft is rotated in the second direction, so that the second body portion is capable of being rotated in linkage with the shaft.
  6. 6. The orthopedic adapter according to claim 5, wherein when the shaft rotates in the first direction, the second hook overcomes the elastic force of the second pressing portion by the rotational force of the shaft and sequentially moves to another adjacent second shaft recess portion while rotating with respect to the shaft, whereby the second body portion is not interlocked with the rotation of the shaft.
  7. 7. The orthopedic adapter according to claim 4, wherein: The shaft further has first shaft threaded portions and second shaft recessed portions alternately positioned in a circumferential direction thereof; the first body portion having a first ratchet portion; the first ratchet part has a first hook part and a first pressing part for applying elastic force in a direction of always pressing the first hook part, and The first hook is capable of being captured in the first shaft recess portion, and when the shaft is rotated in the first direction, the first hook is not disengaged from the first shaft recess portion so that the first body portion is capable of rotating in conjunction with the shaft.
  8. 8. The orthopedic adapter according to claim 7, wherein when the shaft rotates in the second direction, the first hook overcomes the elastic force of the first pressing portion by the rotational force of the shaft and sequentially moves to another adjacent first shaft recess portion while rotating with respect to the shaft, whereby the first body portion is not interlocked with the rotation of the shaft.
  9. 9. The orthopedic adapter according to claim 4, wherein the first strike comprises: A first body portion having a first aperture formed therein; A first rod penetrating through a wall of the first body portion such that one end protrudes into the first hole and the other end protrudes outside the first body portion, and A first protruding portion connected to one end of the first body portion to form a step with the first body portion, Wherein two first bars facing each other at 180 ° intervals in the circumferential direction of the first body portion are provided.
  10. 10. The orthopedic adapter according to claim 9, wherein an end of the first rod moves along the first threaded recessed portion when the first body portion is rotated, and the first striker moves rearward by a restoring force of the first resilient member when the end of the first rod exits the first threaded recessed portion and reaches the first longitudinal recessed portion.
  11. 11. The orthopedic adapter of claim 3, wherein the second strike comprises: a second body portion having a second aperture formed therein; A second rod penetrating through a wall of the second body part such that one end protrudes into the second hole and the other end protrudes outside the second body part, and A second protruding portion connected to one end of the second body portion to form a step with the second body portion, Wherein two second bars facing each other at 180 ° intervals in the circumferential direction of the second body portion are provided.
  12. 12. The orthopedic adapter according to claim 11, wherein an end of the second rod moves along the second threaded recessed portion when the second body portion is rotated, and the second striker moves forward by a restoring force of the second elastic member when the end of the second rod leaves the second threaded recessed portion and reaches the second longitudinal groove portion.
  13. 13. The orthopedic adapter of claim 2, wherein the housing portion further comprises: a circumferential through hole through which the connection pin can move, and A front opening from which the force transmitting portion protrudes.
  14. 14. The orthopedic adapter of claim 13, wherein the force transmitting portion comprises: a tool attachment portion protruding through the front opening of the housing portion, and A frame relatively slidable along the shaft.
  15. 15. The orthopedic adapter according to claim 11, wherein the second inner housing further has a second slot through which the second rod moves.
  16. 16. The orthopedic adapter according to claim 9, wherein a first inner housing is provided that is secured within the housing portion and surrounds the first strike and the first strike transfer, and the first inner housing has a first slit through which the first rod moves.

Description

Orthopedics adapter Technical Field The present invention relates to an orthopedic adapter, and in particular to an adapter for a striker used in orthopedic surgery. Background As the population aging phenomenon increases worldwide, there is an increasing demand for hip replacement surgery. In addition, recently, even in young patients, cases of receiving hip surgery due to various inflammations or tumors, intense exercise, and the like are increasing. An artificial hip joint replacement surgery is a surgery for replacing one or both sides of a joint with an artificial joint when an abnormality occurs in the joint or bone connecting the hip bone (acetabulum) and the femur (femur). Meanwhile, in such a surgical procedure, the process of inserting a stem (femoral stem) into a correct position within a femur (Femur) is one of the factors that determine the prognosis of the operation. Conventionally, in order to insert a stem into a femur, a intramedullary pin is first inserted into the femur, then removed to form a space into which the stem is then inserted. However, as shown in fig. 24, a method is used in which a doctor directly and manually applies a blow to the intramedullary pin (300) using a tool such as a hammer (M) to insert it into the femur (400) and form a space for stem insertion. However, in this case, the magnitude and direction of the striking applied to the intramedullary pin (300) and the like are not constant, and thus an abnormal space is formed in the femur. As a result, when the stem is inserted into the space, the prognosis of the operation becomes poor, causing a problem of causing a re-operation. To improve this, the applicant has developed an orthopedic impactor disclosed in korean registered patent No. 2,343,886 (see fig. 25 and 26). For reference, fig. 25 and 26 correspond to fig. 1 and 4 of korean registered patents owned by the applicant, respectively, and reference numerals used in korean registered patents, which are not modified, are used for convenience of explanation, and it is clarified that even if these reference numerals overlap with those used in the description of the present invention described later, they do not refer to the same parts. Such a conventional striker includes a rotary power tool (200) and an adapter (100) removably coupled thereto. As shown in fig. 24, the adapter (100) includes a housing portion (6), a tool coupling portion (5) that receives a rotational force from a rotary power tool, a first rotating portion (7) that rotates in association with rotation of the tool coupling portion only in one of a plurality of rotational directions of the tool coupling portion, a striker transferring portion (4) that rotates in association with rotation of the first rotating portion, a striker (3) that moves in a first direction while compressing a first spring (2) by rotation of the striker transferring portion and then moves in a second direction opposite to the first direction by a restoring force of the first spring, and a force transmitting portion (1) that moves in the second direction by contact with the striker. However, conventional adapters may apply force to strike the needle to insert the needle, but only strike the needle when it is inserted, and there are limitations in that they cannot be used to remove the needle. Furthermore, since the conventional adapter cannot adjust the force applied to the intramedullary pin, there is a problem in that it may cause fracture of the femur due to excessive force. Disclosure of Invention Technical problem The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an orthopedic adapter capable of adjusting an impact force for inserting a surgical instrument such as a spinal needle, and also capable of generating not only an impact force for inserting a surgical instrument but also a force for removing a surgical instrument. Technical proposal In order to achieve the above object, an orthopedic adapter according to an embodiment of the present invention is detachably coupled to a rotary power tool, and is characterized by comprising a housing portion, a tool coupling portion that receives a rotational force from the rotary power tool, a shaft that rotates in conjunction with a rotational direction of the tool coupling portion, a first striker transfer portion that rotates in conjunction with the shaft only when the shaft rotates in a first direction, a first striker that can move backward by rotation of the first striker transfer portion, a second striker transfer portion that rotates in conjunction with the shaft only when the shaft rotates in a second direction, a second striker that can move forward by rotation of the second striker transfer portion, a force transmitting portion that can move backward by contact with the first striker and can move forward by contact with the second striker, and a force adjusting portion that can adjust a force appl