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CN-224206861-U - Steering hollow scraping tooth

CN224206861UCN 224206861 UCN224206861 UCN 224206861UCN-224206861-U

Abstract

The utility model relates to the field of medical scraping teeth, in particular to a steering hollow scraping tooth, which comprises a handle, wherein a connecting rod is rotationally arranged at the end part of the handle, a first scraping tooth is fixed at the end part of the connecting rod, a pair of second scraping teeth with adjustable spacing are arranged at one side of the first scraping tooth, a pair of connecting seats are fixed at the end part of the handle, the end part of the connecting rod is rotationally arranged between the pair of connecting seats, a clamping gear is fixed at the outer side of a rotating shaft, a clamping assembly matched with the clamping gear is arranged at the end part of the handle, and an adjusting assembly is arranged at the end part of the connecting rod and used for adjusting the spacing of the pair of second scraping teeth. This tooth easy operation is scraped to hollow, through the angle of adjusting connecting rod and handle to adjust the operating angle who scrapes the tooth, the user can be nimble adjust according to actual demand, simultaneously, still can set up a pair of adjustable interval's second in the first tooth outside of scraping and scrape the tooth, alright adjust the holistic cutting edge width of tooth of scraping, thereby increase the intervertebral space of handling.

Inventors

  • CHEN CHAO

Assignees

  • 华中科技大学同济医学院附属协和医院

Dates

Publication Date
20260508
Application Date
20250123

Claims (8)

  1. 1. The utility model provides a turn to hollow tooth of scraping, its characterized in that includes handle (1), the tip rotation of handle (1) is equipped with connecting rod (2), the tip of connecting rod (2) is fixed with first tooth (3) of scraping, one side of tooth (3) is scraped to first tooth (3) of scraping is equipped with and scrapes tooth (4) with first tooth (3) side laminating and a pair of second of adjustable interval.
  2. 2. The steering hollow scraping tooth according to claim 1, wherein a pair of mounting seats (5) are fixed at the end part of the handle (1), the end part of the connecting rod (2) is rotatably arranged between the pair of mounting seats (5) through a rotating shaft (6), a clamping gear (7) is fixed at the outer side of the rotating shaft (6), and a clamping assembly (8) matched with the clamping gear (7) is arranged at the end part of the handle (1).
  3. 3. The steering hollow scraping tooth according to claim 2, wherein the clamping assembly (8) comprises a pair of limit grooves (81) formed in the end portions of the handle (1), a limit rod (82) is fixed on the inner wall of the limit groove (81), a connecting plate (83) is sleeved on the outer side of the limit rod (82), a clamping rod (84) extending to a position between a pair of mounting seats (5) is fixed on the connecting plate (83), a limit block (85) is further fixed on the end portions of the limit rod (82), and a reset spring (86) located between the limit block (85) and the inner wall of the limit groove (81) is sleeved on the outer side of the limit rod (82).
  4. 4. A turning hollow scraping tooth as claimed in claim 3, characterized in that the outer thread of the end of the handle (1) is connected with a sliding ring (87), the sliding ring (87) being abutted against the same side face of a pair of connecting plates (83).
  5. 5. The steering hollow scraping tooth according to claim 1, wherein the connecting rod (2) is detachably connected by two rod parts (21), a threaded connector (22) is fixed at the end part of the rod part (21) on the left side, and a thread groove (23) in threaded connection with the threaded connector (22) is formed at the end part of the rod part (21) on the right side.
  6. 6. The steering hollow scraping tooth according to claim 1, wherein the first scraping tooth (3) is in a T shape, an adjusting component (9) is arranged at the end part of the connecting rod (2) and used for adjusting the distance between a pair of second scraping teeth (4), and the inner side surfaces of the two second scraping teeth (4) are fixed with the first scraping tooth (3) through a telescopic rod (10).
  7. 7. The steering hollow scraping tooth according to claim 6, wherein the adjusting component (9) comprises a pair of positioning grooves (91) formed in the end portions of the connecting rods (2), positioning rods (92) extending to the inner sides of the second scraping teeth (4) are movably arranged in the positioning grooves (91), moving blocks (93) are fixed on the positioning rods (92), first U-shaped connecting seats (94) are fixed on the end portions of the positioning rods (92), connecting rods (95) are hinged to the first U-shaped connecting seats (94), second U-shaped connecting seats (96) fixed to the inner sides of the second scraping teeth (4) are hinged to the other ends of the connecting rods (95), and positioning springs (97) located between the moving blocks (93) and the inner side walls of the positioning grooves (91) are sleeved on the outer sides of the positioning rods (92).
  8. 8. The steering hollow scraping tooth as claimed in claim 7, characterized in that the outer side of the end of the connecting rod (2) is connected with a moving ring (98) in a threaded manner, and the moving ring (98) is abutted against the same side surfaces of a pair of moving blocks (93).

Description

Steering hollow scraping tooth Technical Field The utility model relates to the field of medical scraping teeth, in particular to a steering hollow scraping tooth. Background In some spinal endoscopic procedures, the need to resect portions of bone creates a relatively free working channel for the procedure. Particularly in the most common lumbar transforaminal approach herniated disc nuclectomy, an expansion molding of the foramen is often required, simply by cutting or grinding off part of the superior articular processes by means of a step-by-step trepan, bone file or under-the-lens grinding drill, etc., so as to remove the obstruction or the obstruction to the changing angle of the endoscope, thereby completing more complex surgical operations. Generally in operation in-process, grind the part and go up the articular process and get rid of through the trepan step by step, to the wound after having first trepan, when adopting the second grade trepan, the efficiency of grinding of second grade trepan will be less than the whole efficiency of cutting of wound relatively, can make operation time extension, extension medical personnel's operation time, because scrape the tooth structure less, adopt and scrape tooth effect half the time this moment, but the tooth structure of scraping commonly used is inconvenient to adjust the cutting edge of scraping the tooth according to the demand when using, runs into the blind area that is difficult to the stretching of exploring simultaneously, inconvenient angle of scraping the tooth of changing. Therefore, there is a need to design a steering hollow wiper to solve the above problems. Disclosure of Invention In order to overcome the defects in the prior art, the utility model provides the steering hollow scraping tooth, the angle of the connecting rod and the handle is adjusted, so that the operation angle of the scraping tooth is adjusted, a user can flexibly adjust according to actual requirements, and meanwhile, a pair of second scraping teeth with adjustable intervals are arranged outside the first scraping tooth, so that the whole blade width of the scraping tooth can be adjusted, and the processed intervertebral space is enlarged. The utility model provides a steering hollow scraping tooth which comprises a handle, wherein a connecting rod is rotatably arranged at the end part of the handle, a first scraping tooth is fixed at the end part of the connecting rod, and a pair of second scraping teeth which are attached to the side surface of the first scraping tooth and can adjust the distance are arranged on one side of the first scraping tooth. Through adjusting the angle of connecting rod and handle to adjust the operating angle who scrapes the tooth, the user can be nimble adjust according to actual demand, through scraping the tooth through the second that sets up a pair of adjustable interval in the first tooth outside of scraping again, alright adjust the holistic cutting edge width of scraping the tooth, thereby increase the intervertebral space of handling. As a further technical scheme, the end part of the handle is fixedly provided with a pair of connecting seats, the end part of the connecting rod is rotatably arranged between the pair of connecting seats through a rotating shaft, the outer side of the rotating shaft is fixedly provided with a clamping gear, and the end part of the handle is provided with a clamping assembly matched with the clamping gear. Through stirring the angle of connecting rod to adjust the operating angle who scrapes the tooth, rethread joint subassembly and the mutual joint cooperation of joint gear can maintain the connecting rod in this angle unchanged, the convenience of customers operation. As a further technical scheme, the joint subassembly is including seting up in a pair of spacing groove of handle tip, the inner wall of spacing groove is fixed with the gag lever post, the outside cover of gag lever post has the link plate, be fixed with the card pole that extends to between a pair of connecting seat on the link plate, the tip of gag lever post still is fixed with the stopper, the outside cover of gag lever post is equipped with the reset spring that is located between stopper and the spacing groove inner wall. After the connecting rod is stirred to a certain angle, the connecting plate is pushed, so that the clamping rod moves and is clamped in the gap between adjacent tooth blocks of the clamping gear, the clamping gear is maintained to be unchanged at a certain angle, and the reset spring can be extruded in the process of pushing the connecting plate, so that the connecting plate can be reset by itself. As a further technical scheme, the outside thread connection of handle tip has the slip ring, the slip ring butt is in the homonymy of a pair of link plate. The sliding ring is rotated, so that the sliding ring simultaneously pushes the connecting plate to move leftwards until the clamping rod is clamped into a gap be