Screw implantation device

Abstract

This invention discloses an implant device, comprising a transmission assembly and a guide pin assembly. The transmission assembly includes a hollow transmission shaft and a transmission connector. The hollow transmission shaft has a first end and a second end, the first end having a plurality of limiting members. The transmission connector is rotatably fitted onto the first end. The transmission connector has two snap-fit ​​protrusions on both sides, each snap-fit ​​protrusion having a recess. The guide pin assembly is detachably assembled onto the first end of the hollow transmission shaft. The guide pin assembly includes a sleeve, a connector, and a guide pin. The connector is hollow and detachably connected to the sleeve, while the hollow transmission shaft is fitted around the sleeve and connected to the connector. The connector has two first protrusions on both sides. The guide pin passes through the connector and is connected to the sleeve.

Claims

1. A nail implantation device, comprising: A transmission assembly includes: a hollow transmission shaft having a first end and a second end, the first end having a plurality of limiting members; a transmission connector rotatably sleeved on the first end, the transmission connector having two snap-fit ​​protrusions on both sides, each snap-fit ​​protrusion having a recess; and a guide pin assembly detachably assembled to the first end of the hollow transmission shaft, the guide pin assembly including: a sleeve; a hollow connector detachably connected to the sleeve, the hollow transmission shaft being sleeved around the sleeve and connected to the connector, the connector having two first protrusions on both sides; and a guide pin passing through the connector and connected to the sleeve; wherein, when the guide pin assembly is assembled to the hollow transmission shaft, the transmission connector is used to rotate axially along one axis of the hollow transmission shaft, causing the two first protrusions to respectively engage with the two recesses and be stopped by the two snap-fit ​​protrusions, thereby fixing the guide pin assembly.

2. The staple implantation device as described in claim 1, wherein, The plurality of limiting members consists of four, which are respectively arranged in pairs on opposite sides of the first end, and along the circumferential direction, the distance between the outer walls of each pair of limiting members is greater than the width of the buckle protrusion.

3. The staple implantation device as described in claim 2, wherein, The connector is also provided with two second protrusions on both sides, which are respectively adjacent to the two first protrusions. When the guide pin assembly is assembled on the hollow drive shaft, each of the second protrusions is engaged between the corresponding pair of limiting members.

4. The implantation device as described in claim 1 further includes a pedicle screw assembly having a U-shaped connector, and the transmission assembly further includes a hollow connecting shaft sleeved on the hollow transmission shaft, the transmission connector being disposed between the plurality of limiting members and the hollow connecting shaft; wherein, The hollow connecting shaft has an external thread on its outer wall, and the U-shaped connector has an internal thread on its inner wall. When the pedicle screw assembly is assembled at the first end of the hollow drive shaft, the hollow connecting shaft and the U-shaped connector are connected by the engagement of the internal thread and the external thread.

5. The staple implantation device as described in claim 4 further includes: a drive motor; a central shaft poweredly connected to the drive motor, wherein, The hollow drive shaft of the transmission assembly is sleeved around the central shaft and coaxially configured with the central shaft. The drive motor is adjacent to the second end of the hollow drive shaft, and the hollow drive shaft is poweredly connected to the drive motor. A reducer assembly is disposed between the drive motor and the second end of the hollow drive shaft. The reducer assembly is used to connect the drive motor and the hollow drive shaft. A quick-release connector is connected to the reducer assembly. The quick-release connector has a engagement groove, and the second end of the hollow drive shaft has an engagement portion. The engagement portion engages with the engagement groove, thereby axially positioning the hollow drive shaft and transmitting the torque provided by the drive motor.

6. The staple implantation device as claimed in claim 5, wherein, The pedicle screw assembly is detachably assembled to the first end of the hollow drive shaft and connected to the guide pin assembly; wherein the pedicle screw assembly includes a hollow pedicle screw, and the hollow drive shaft, the connector and the hollow pedicle screw are coaxially configured.

7. The staple implantation device as claimed in claim 6, wherein, The U-shaped connector has a through hole through which the hollow pedicle screw passes and is engaged with the U-shaped connector.

8. The staple implantation device as claimed in claim 7, wherein, When the guide needle assembly and the pedicle screw assembly are assembled at the first end of the hollow drive shaft, the guide needle passes through the hollow pedicle screw, and the connector abuts against the hollow pedicle screw.

9. The nail-planting device as claimed in claim 7 further includes a retaining member sleeved around the transmission assembly and connected to the U-shaped connector.

10. The staple implantation device as claimed in claim 5, wherein, The central shaft, the sleeve, and the guide pin are coaxially configured, and the sleeve engages with the central shaft.

11. The staple implantation device as claimed in claim 1, wherein, The inner wall of the sleeve has an internal thread, and the surface of the guide pin has an external thread. The sleeve and the guide pin are connected to each other by the engagement of the internal thread and the external thread.

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