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CN-121971191-A - Oral implant bone split chisel and use method

CN121971191ACN 121971191 ACN121971191 ACN 121971191ACN-121971191-A

Abstract

The invention discloses an oral cavity bone-planting split chisel and a use method thereof, the chisel comprises a holding part, a buffer area and a working head part, wherein the holding part, the buffer area and the working head part are distributed in a T-shaped structure, the holding part is a rod body, the surface of the holding part is provided with an anti-slip structure, the axis of the working head part is vertically and fixedly connected with the axis of the buffer area, the working head part comprises a guide surface and a guide blade, the splitting blade is in a wedge-shaped structure, the cutting edge is in an arc shape, both sides of the cutting edge are provided with arc-shaped transition surfaces, the tip end is provided with a round angle transition, the thickness of the cutting edge is gradually increased from the tip end to the root end, and the holding part and the buffer area are in an integral or detachable structure. The invention improves the holding stability through a T-shaped structure, reduces the friction and damage of bone tissues by designing the arc-shaped cutting edge and the round angle, can adapt to the requirements of different operation areas (a straight neck for an anterior tooth area and a bent neck for a posterior tooth area) and realize multi-direction accurate bone fracture, and the application method adapts to different alveolar bone forms and cortical thicknesses, has standard and controllable operation steps, effectively controls the fracture range, reduces the operation risk, improves the safety and convenience of implantation operation, and is suitable for various oral implantation bone fracture operations.

Inventors

  • LIU KUN
  • SI YUANCHUN
  • HOU YONGFU
  • WANG CHUN
  • WANG JING

Assignees

  • 合肥市口腔医院

Dates

Publication Date
20260505
Application Date
20260317

Claims (8)

  1. 1. The oral cavity planting bone splitting chisel is characterized by comprising a holding part (1), a buffer area (2) and a working head part (3), wherein the holding part (1) is in a T-shaped structure, the surface of the holding part is provided with an anti-slip structure, the axis of the holding part (1) is perpendicular to the axis of the buffer area (2) and is fixedly connected with the axis of the buffer area, the working head part (3) comprises a guide surface (12) and a guide blade (4), the working head part (3) is connected with the buffer area (2) through a semicircular stretching area (8), the splitting blade of the working head part (3) is in a wedge-shaped structure, and the cutting edge (321) of the splitting blade is in an arc shape.
  2. 2. The dental implant bone split chisel according to claim 1, wherein the holding part (1) is a cylindrical rod body, the anti-slip structure is one or two of a spiral line and an anti-slip groove, the length of the holding part (1) is 110mm, and the diameter is 5mm.
  3. 3. The dental implant bone splitting chisel according to claim 1, wherein the buffer zone (2) is of a solid structure, the cross-sectional shape of the buffer zone is the same as the cross-sectional shape of the tail end of the working head (3), the length of the buffer zone (2) is 9mm, the diameter of the buffer zone is 4-6mm, and the buffer zone (2) and the working head (3) are of an integral structure.
  4. 4. The oral implant bone splitting chisel of claim 1, wherein the two sides of the cutting edge of the splitting blade are provided with arc transition surfaces, the tip of the splitting blade is provided with rounded transition, the thickness of the cutting edge gradually increases from the tip to the root, and the guiding surface (12) is a lingual guiding surface with a length of 10mm and a thickness of 0.5mm.
  5. 5. The oral implant bone splitting chisel according to claim 1, wherein the holding part (1) and the buffer area (2) are made of 316L medical stainless steel or titanium metal, the working head (3) is made of Ti6Al4V medical titanium alloy or 316L medical stainless steel, and each part is sterilized.
  6. 6. The dental implant bone split chisel according to claim 1, characterized in that the working end (working head (3) +buffer zone (2)) is of unitary construction, and the working ends (2, 3) of different specifications can be integrally selected according to the required splitting width and bone tissue hardness of the surgery.
  7. 7. A method of using the oral implant bone split chisel of any one of claims 1 and 6, comprising the steps of: S1, preoperative evaluation, namely determining a bone fracture surgery scheme according to the alveolar bone morphology, cortical bone thickness and the bone bed width required by the implantation surgery of a patient, and selecting working ends (2 and 3) and a holding part (1) with the adaptation specification; S2, preparing bone cuts, namely cutting T-shaped cuts on the tops of the alveolar ridges and the cheek sides by adopting an ultrasonic bone knife if the bone cortex on the labial side of the patient is thicker, wherein the cheek side cuts are guide expansion openings, and the tops of the alveolar ridges are bone cleavage entrance openings; S3, bone splitting operation, namely sequentially using I, II, III, IV T-shaped bone splitting chisels with gradually increased specification, aligning a guide blade (4) of the bone splitting chisels with a bone splitting entrance, holding a holding part (1) by two hands of an operator, slowly applying axial or lateral force according to the shape of an alveolar bone, guiding the bone splitting chisels to enter the way through a guide surface (12), and gradually widening the alveolar bone until the width of a bone bed required by implantation operation is reached; S4, after the postoperative treatment, taking out the chisel from the oral cavity after the bone fracture operation is finished, and cleaning and sterilizing the holding part (1) and the working ends (2 and 3), so that the bone fracture surgical instrument is convenient to reuse.
  8. 8. The use method according to claim 7, wherein in step S3, the thickness of the leading edge (4) of the labial chisel of the I, II, III, IV T-shaped chisel with increasing specification increases sequentially, so as to realize gradual widening of the alveolar bone and avoid fracture of bone tissue.

Description

Oral implant bone split chisel and use method Technical Field The invention relates to the technical field of medical instruments for oral implant surgery, in particular to an oral implant bone split chisel and a use method thereof. Background In the oral implant surgery, the defect of insufficient alveolar bone width is a common clinical problem, and the bone bed space is required to be enlarged through a bone cleavage technology so as to meet the implant adaptation requirement of an implant. The bone splitting chisel in the prior art is of a straight rod type or simple L-shaped structure, has the technical defects that firstly, the force application direction is single, splitting force can be applied only along the axial direction, multidirectional accurate splitting is difficult to achieve, fracture of bone tissues or uncontrolled splitting range is easy to cause, surgical risks are greatly increased, secondly, slipping and deviation are easy to occur in the surgical process due to lack of a special guide blade and a guide surface, the operation precision is seriously affected, particularly when complex bone forms are processed, the labor intensity of operators is obviously increased, thirdly, the design of a splitting cutting edge is unreasonable, the contact area with the bone tissues is too large or too small, uneven stress on the bone tissues is easy to be caused due to too large contact area, and the bone healing effect after surgery is influenced due to too small contact area. Therefore, a bone split chisel which can realize multidirectional accurate force application, stable holding, guide in an approach and small damage to bone tissues, and a use method which is matched with specifications and is adapted to different operation scenes is needed in the art, so that the defects in the prior art are overcome. Disclosure of Invention The invention aims to overcome the defects of single force application, unstable holding, lack of guidance in an approach, high risk of bone injury and no standard use method adapting to different operation scenes of the existing bone splitting chisel, and provides an oral cavity planting bone splitting chisel and a use method thereof, so that multidirectional accurate bone splitting is realized, the operation safety and the operation convenience are improved, and the operation requirements of different alveolar bone forms and bone cortex thicknesses are adapted. The oral cavity planting bone splitting chisel comprises a holding part, a buffer area and a working head part, wherein the cross sections of the working head part and the buffer area are distributed in a T-shaped structure, the holding part is in a rod body structure, an anti-slip structure is arranged on the surface of the holding part, the axis of the holding part is perpendicular to the axis of the buffer area and is fixedly connected with the axis of the buffer area, the working head part comprises a guide surface and a guide blade, the working head part is connected with the buffer area through a semicircular opening area, the splitting blade of the working head part is in a wedge-shaped structure, and the cutting edge of the splitting blade is arc-shaped. Further, the holding part is a cylindrical rod body, the length is 110mm, the diameter is 4-6mm, the anti-slip structure is one or two of spiral lines and anti-slip grooves, the stability of an operator during holding is improved, and slipping in the operation process is avoided. Further, the buffer zone is of a solid structure, the length is 9mm, the diameter is 4-6mm, the cross section shape of the buffer zone is the same as the cross section shape of the tail end of the working head, the effective transmission of force is ensured, and the buffer zone and the working head are of an integrated structure. Further, arc transition surfaces are arranged on two sides of the cutting edge of the splitting blade, a rounded corner transition is arranged at the tip end, the thickness of the cutting edge is gradually increased from the tip end to the root end, friction damage to bone tissues in the splitting process is reduced, meanwhile, the bone tissues or soft tissues are prevented from being scratched by a sharp end, the guiding surface is a tongue side guiding surface, the length is 10mm, the thickness is 0.5mm, accurate guiding is provided for a chisel access, and operation deviation is prevented. Furthermore, the holding part and the buffer area are made of 316L medical stainless steel or titanium metal, the working head is made of Ti6Al4V medical titanium alloy or 316L medical stainless steel, and all parts are sterilized, so that the medical instrument biocompatibility requirements are met, and the medical instrument is corrosion-resistant, high in strength and long in service life. Furthermore, the working end is of a fixed or replaceable structure, the working heads with different specifications can be replaced according to the required splitting width a