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CN-121987298-A - Medical ultrasonic blade, medical ultrasonic blade system and robot-assisted ultrasonic blade system

CN121987298ACN 121987298 ACN121987298 ACN 121987298ACN-121987298-A

Abstract

The application provides a medical ultrasonic knife, a medical ultrasonic knife system and a robot-assisted ultrasonic knife system, and belongs to the technical field of medical appliances. The medical ultrasonic knife comprises a knife bar, a connecting component and a knife head. The cutter bar extends along a first direction, the cutter bar is provided with a first end and a second end which are distributed along the first direction, the connecting component is connected with the first end of the cutter bar, the cutter head abuts against the first end of the cutter bar, and the cutter head is rotatably connected with the connecting component. The tool bit is rotatable about at least one central axis, the direction of extension of the central axis intersecting the first direction. The tool bit can rotate around at least one central shaft intersected with the first direction, and the operation angle and the direction of the tool bit can be adjusted, so that the tool bit can reach a special patient part which is difficult to touch by the straight tool bit, the difficulty of inconvenient bone cutting operation of the special part is solved, and the application range of the medical ultrasonic knife is enlarged.

Inventors

  • CAO QUN
  • ZHAN SONGTAO
  • Fang Yingfei
  • DAI ZHILING

Assignees

  • 北京水木天蓬医疗设备有限公司

Dates

Publication Date
20260508
Application Date
20260330

Claims (14)

  1. 1. A medical ultrasonic blade, the medical ultrasonic blade comprising: A cutter bar extending along a first direction, the cutter bar having a first end and a second end arranged along the first direction; The connecting component is connected with the first end of the cutter bar; The cutter head is propped against the first end of the cutter bar and is rotatably connected with the connecting assembly, the cutter head can rotate around at least one central shaft, and the extending direction of the central shaft is intersected with the first direction.
  2. 2. The medical ultrasonic blade of claim 1, wherein the length of the connection portion of the connection assembly to the blade bar is adjustable in the first direction to adjust the abutment force of the blade head to the blade bar.
  3. 3. The medical ultrasonic blade of claim 2, wherein the coupling assembly is threadably coupled to the blade bar.
  4. 4. The medical ultrasonic blade of any one of claims 1 to 3, wherein the first end of the blade bar has a first recess, the bottom and side surfaces of the first recess being located within the same sphere; the tool bit is provided with a first bulge at one end facing the first end, and the top surface and the side surface of the first bulge are positioned in the same spherical surface; At least part of the first protrusion is attached to the first groove, and at least part of the first protrusion can rotate in the first groove.
  5. 5. The medical ultrasonic blade of claim 4, wherein the first end of the blade bar has a first external thread, and wherein the coupling assembly comprises: the connecting sleeve is provided with a first penetrating cavity extending along a first direction, the inner side wall of the first penetrating cavity is provided with a first internal thread, and the first external thread is connected with the first internal thread; A first connecting pin extending in a second direction, the second direction intersecting the first direction; The first bulge is located in the first penetrating cavity and is abutted to the inner side wall of the first penetrating cavity, the other end of the cutter head protrudes out of the first penetrating cavity, and the first connecting pin penetrates through the first connecting pin and the cutter head and is connected with the first connecting pin and the cutter head.
  6. 6. The medical ultrasonic blade of claim 5, wherein the connecting sleeve has first avoidance notches on both sides along a third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the width of the first avoidance notches along the second direction is greater than or equal to the width of the blade.
  7. 7. The medical ultrasonic blade of claim 5 or 6, wherein the blade bar has a first cooling channel extending in a first direction, the first cooling channel extending through a bottom surface of the first recess, the blade bar further having a first cooling hole adjacent to the first recess in the first direction, the first cooling hole extending in a direction intersecting the first direction, the first cooling hole in communication with the first cooling channel.
  8. 8. The medical ultrasonic blade of claim 4, wherein the first end of the blade bar has a second external thread, the connecting assembly has a second through cavity extending along the first direction, the inner side wall of the second through cavity has a second internal thread, the second external thread is connected with the second internal thread, the inner side wall of the second through cavity away from the first end is positioned in the same sphere; The first bulge is located in the second penetrating cavity, the annular bulge is attached to and abutted against the inner side wall of the second penetrating cavity, the other end of the cutter head protrudes out of the second penetrating cavity, and the annular bulge can be attached to the inner side wall of the second penetrating cavity to rotate.
  9. 9. The medical ultrasonic blade of claim 8, wherein the blade bar has a second recess located on a side of the first recess remote from the first projection, the second recess extending through a bottom surface of the first recess, the blade bar having a second cooling channel extending in a first direction, the second cooling channel extending through a bottom surface of the second recess; the cutter head is provided with a third cooling channel extending along the extending direction of the cutter head, the third cooling channel penetrates through the top surface of the first bulge, a part of the cutter head is positioned in the second groove, the cutter head is further provided with a second cooling hole, the extending direction of the second cooling hole is intersected with the extending direction of the third cooling channel, and the second cooling hole is communicated with the third cooling channel.
  10. 10. The medical ultrasonic blade of claim 4, wherein the blade bar has a third recess located on a side of the first recess remote from the first projection, the third recess extending through a bottom surface of the first recess, an inner wall of the third recess having a third internal thread, the coupling assembly comprising: the connecting piece is provided with a third external thread at one end, and the third external thread is connected with the third internal thread; a second connecting pin extending in a second direction, the second direction intersecting the first direction; The tool bit is provided with a fourth groove, the fourth groove penetrates through the top surface of the first bulge, the other end of the connecting piece is located in the fourth groove, and the second connecting pin penetrates through the connecting piece and the tool bit and is connected with the connecting piece and the tool bit.
  11. 11. The medical ultrasonic blade of claim 10, wherein the fourth groove further extends through both sides of the first protrusion in a third direction, the first direction, the second direction, and the third direction being perpendicular to each other.
  12. 12. The medical ultrasonic blade of claim 10 or 11, wherein the blade bar has a fourth cooling channel extending in a first direction, the blade bar further having a third cooling hole located on a side of the first recess remote from the first end, the third cooling hole extending in a direction intersecting the first direction, the third cooling hole in communication with the fourth cooling channel.
  13. 13. A medical ultrasonic blade system comprising a vibration source and the medical ultrasonic blade of any one of claims 1 to 12; the vibration source is connected with the medical ultrasonic knife and is used for generating vibration.
  14. 14. A robotic-assisted ultrasonic blade system comprising a robotic-assisted surgical device and the medical ultrasonic blade system of claim 13; The robot-assisted surgery device is connected with a medical ultrasonic knife in the medical ultrasonic knife system so as to control the movement of the medical ultrasonic knife.

Description

Medical ultrasonic blade, medical ultrasonic blade system and robot-assisted ultrasonic blade system Technical Field The application relates to the technical field of medical instruments, in particular to a medical ultrasonic knife, a medical ultrasonic knife system and a robot-assisted ultrasonic knife system. Background Along with the development of ultrasonic technology and the combination of the ultrasonic technology and modern medicine, medical ultrasonic cutters are also gradually applied to surgical operations, for example, the medical ultrasonic cutters can be used for performing operations of cutting bones, drilling bones or grinding bones on bone tissues, so that the purpose of treating the bone tissues is achieved. In some surgical scenes, there are often cases where bone tissue to be removed is blocked by other tissue, and an operator needs to bypass the blocked tissue to perform a bone cutting operation, and avoid damage to surrounding tissue, where such operations have high requirements on flexibility and suitability of the operating instrument. In the related art, most of the tool bits of the medical ultrasonic knife are designed in a straight head mode, the tool bits of the straight head design are difficult to reach the target affected part, and bone cutting operation of the special part cannot be effectively achieved. Disclosure of Invention The present application aims to solve at least one of the technical problems existing in the background art. It is, therefore, an object of the present application to provide a medical ultrasonic blade, a medical ultrasonic blade system, and a robot-assisted ultrasonic blade system for performing a bone-cutting operation of a medical ultrasonic blade on a specific site. An embodiment of the first aspect of the application provides a medical ultrasonic blade, which comprises a blade bar extending along a first direction, the blade bar having a first end and a second end arranged along the first direction, a connecting assembly connected with the first end of the blade bar, a blade head abutting against the first end of the blade bar, the blade head being rotatably connected with the connecting assembly, the blade head being rotatable about at least one central axis, the central axis extending in a direction intersecting the first direction. In some embodiments, the length of the connection portion of the connection assembly and the cutter bar is adjustable in the first direction to adjust the abutment force of the cutter head and the cutter bar. In some embodiments, the connection assembly is threadably coupled to the tool bar. In some embodiments, the first end of the tool bar has a first recess, the bottom and side surfaces of the first recess are located in the same sphere, the end of the tool bit facing the first end has a first protrusion, the top and side surfaces of the first protrusion are located in the same sphere, at least part of the first protrusion is attached to the first recess, and at least part of the first protrusion is rotatable in the first recess. In some embodiments, the first end of the tool bar has a first external thread, the connecting assembly comprises a connecting sleeve with a first through cavity extending along a first direction, the inner side wall of the first through cavity is provided with a first internal thread, the first external thread is connected with the first internal thread, a first connecting pin extends along a second direction, the second direction intersects the first direction, wherein a first bulge is positioned in the first through cavity and is abutted with the inner side wall of the first through cavity, the other end of the tool bit protrudes out of the first through cavity, and the first connecting pin penetrates through the first connecting pin and the tool bit and is connected with the first connecting pin and the tool bit. In some embodiments, the connecting sleeve has first avoidance notches on two sides along the third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the width of the first avoidance notches along the second direction is greater than or equal to the width of the cutter head. In some embodiments, the tool bar has a first cooling channel extending in a first direction, the first cooling channel extending through a bottom surface of the first recess, the tool bar further having a first cooling hole adjacent the first recess in the first direction, the first cooling hole extending in a direction intersecting the first direction, the first cooling hole in communication with the first cooling channel. In some embodiments, the first end of the cutter bar is provided with a second external thread, the connecting component is provided with a second penetrating cavity extending along the first direction, the inner side wall of the second penetrating cavity is provided with a second internal thread, the second external thre