WO2019095593A1 - Variable-diameter acetabulum file - Google Patents

Variable-diameter acetabulum file Download PDF

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Publication number
WO2019095593A1
WO2019095593A1 PCT/CN2018/079354 CN2018079354W WO2019095593A1 WO 2019095593 A1 WO2019095593 A1 WO 2019095593A1 CN 2018079354 W CN2018079354 W CN 2018079354W WO 2019095593 A1 WO2019095593 A1 WO 2019095593A1
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WO
WIPO (PCT)
Prior art keywords
acetabulum
edge
sliding block
shank
variable diameter
Prior art date
Application number
PCT/CN2018/079354
Other languages
French (fr)
Chinese (zh)
Inventor
王成勇
江文涛
陈志桦
张月
Original Assignee
广东工业大学
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Publication date
Application filed by 广东工业大学 filed Critical 广东工业大学
Publication of WO2019095593A1 publication Critical patent/WO2019095593A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1659—Surgical rasps, files, planes, or scrapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
    • A61B17/1666—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the acetabulum
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B2017/564—Methods for bone or joint treatment

Definitions

  • the invention relates to the field of medical equipment, and in particular to a variable diameter acetabulum.
  • the acetabulum is an essential surgical tool for the treatment of acetabular fossa in hip replacement surgery.
  • the main subjects are acetabular cartilage and a small amount of subchondral bone.
  • the size of the acetabulum was estimated according to the patient's X-ray, and the acetabulum with a diameter of 4 mm smaller than the size of the acetabulum was used for acetabular reconstruction.
  • the necrotic tissue at the hip joint of the patient is removed, and the apical tooth edge simultaneously cuts two different tissues of the acetabular cartilage and the subchondral bone.
  • the acetabulum was progressively honed each time the knife body diameter was increased by 2 mm. The body should be completely seated in the acetabulum, so that the patient's acetabulum is cut to the size of the prosthesis. The acetabulum must be ground to a sufficient depth until the acetabulum reaches the final required size for acetabular reconstruction.
  • a variable diameter acetabulum comprising a shank and a shank disposed at a lower end of the shank, wherein the arbor has a plurality of side blades with an axial array of the arbor, and the shank is slidably provided with a sliding Block, the sliding block is movably connected to the side blade through a connecting rod, the connecting rod is in one-to-one correspondence with the side blade, and one side of the sliding block is provided with an adjustable locking screw, and the bottom of the seat is along the rotating direction thereof At least two lower cutting edges are opened, and the side blades are provided with side cutting edges on a radial surface in the rotating direction of the arbor.
  • the lower cutting edge and the side cutting edge are approximately on the same spherical surface.
  • the arbor is provided with at least one guiding protrusion along its length direction, and the sliding block is provided with a sliding groove matching the guiding protrusion.
  • the guide protrusions are provided with scales corresponding to different diameters of the corresponding side edges.
  • the shank is provided with a card position corresponding to the scale and corresponding to the locking screw.
  • the base surface on the outer side of the side blade is a spherical surface, a curved surface or a plane; the side cutting edge is a hole edge, a straight edge, a curved edge or a variable curvature edge.
  • the base surface of the bottom of the knife seat is a spherical surface, a curved surface or a plane; the lower cutting edge is a hole edge, a straight edge or a curved edge.
  • the lower end of the side blade is provided with a finite position protrusion
  • the knife seat is provided with a limiting groove respectively matched with the limiting protrusion, and the limiting protrusion is hinged in the limiting groove.
  • the upper end of the side blade is provided with a receiving groove for receiving the end of the connecting rod, the connecting rod is hinged in the receiving groove, and the other end of the connecting rod is hinged with the sliding block.
  • the upper end of the arbor is provided with a transmission portion, and the transmission portion includes a clamping groove disposed at an end of the shank and a positioning surface disposed at one end of the shank end.
  • the invention realizes the expansion of the side blades by the mechanism formed by the connecting rod and the sliding block, and the locking nut realizes the locking.
  • the maximum diameter of the variable diameter acetabulum is used, the effective cutting position of the blade is on the same desired spherical surface.
  • the positions of the acetabulum with different diameters are different.
  • the small diameter cuts the bottom and the large diameter cuts the outer edge, and the curvature of the effective cutting part of the acetabulum with different diameters is not much different, even if there is a deviation.
  • the deviation is also corrected for the maximum boring diameter, so that the side insert can be expanded to obtain the desired prosthetic mounting spherical surface.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a schematic partial view of the structure of the present invention.
  • Figure 3 is a schematic side view of the structure of the present invention.
  • a variable diameter acetabulum includes a shank 1 and a shank 2 disposed at a lower end of the shank 1.
  • the knives 2 have a plurality of annular arrays of arbor 1 a side blade 3, the shank 1 is slidably provided with a sliding block 4, the sliding block 4 is movably connected to the side blade 3 through a connecting rod 5, and the connecting rod 5 is in one-to-one correspondence with the side blade 3,
  • An adjustable locking screw 6 is arranged on one side of the sliding block 4, and the bottom of the seat 2 has at least two lower cutting edges 7 along its rotational direction, and the side blades 3 are along a radial plane in the direction of rotation of the shank 1.
  • a side cutting edge 8 is provided.
  • the number of the side blades 3 is 2-5 pieces, and the lower cutting edge 7 is centered on the arbor 1 and has an annular array on the seat 2.
  • the lower cutting edge 7 and the side cutting edge 8 are approximately on the same spherical surface, and the diameter of the acetabulum is gradually enlarged during the cutting process.
  • the lower cutting edge 7 and the side cutting edge 8 are on the same spherical surface. The patient's acetabulum is cut to approximate the size of the prosthesis.
  • the shank 1 is provided with at least one guiding protrusion 9 along its length direction
  • the sliding block 4 is provided with a sliding groove (not shown) matching the guiding protrusion 9 , and the realization form of the sliding groove It can be implemented using any of the prior art.
  • the sliding block 4 slides axially on the shank 1, and the sliding block 4 is movably connected to the side blade 3 through the connecting rod 5, in order to ensure smooth operation, the guiding protrusion 9 is matched with the sliding groove to ensure sliding.
  • the uniformity of the axial movement of the block 4 prevents the sliding block 4 from rotating, and can relieve the torque force during the cutting process of the side blade 3 and improve the stability of the acetabulum.
  • the guide projections 9 described herein are preferably annularly arranged outside the shank 1 to ensure uniformity of force.
  • the guide protrusions 9 are provided with scales (shown in the drawings) in which the corresponding side blades 8 are opened with different diameters, and the scales described herein can be realized by any prior art.
  • the prior art acetabulum starts from the small acetabulum during the operation, and the acetabulum is progressively honed each time the knife body diameter is increased by 2 mm, so the scale on the guide protrusion 9 is preferably The scale corresponds to the expansion diameter of the cutter body of 2 mm.
  • the shank 1 is provided with a card position (shown in the figure) corresponding to the scale and corresponding to the locking screw 6.
  • a clamping position corresponding to the scale is arranged on the arbor 1 for cooperation with the locking screw 6, to ensure stable positioning, and at the same time, it is convenient to adjust and position, and the precision is high.
  • the card position described here only has to function as a limit, and can be implemented by any technique, such as forming a groove on the shank 1.
  • the base surface 10 on the outer side of the side blade 3 is a spherical surface, a curved surface or a plane.
  • the shape of the base surface 10 on the outer side of the side blade 3 has little effect on the use of the acetabulum, and only the path of the base surface 10 is not required to be cut with the side cutting edge 8.
  • the side cutting edge 8 is a hole edge, a straight edge, a curved edge or a variable curvature edge, but the outer edge of the blade edge of the side cutting edge 8 is curved, so that the acetabulum is opened to the maximum diameter and the outer edge of the blade edge It is on the same spherical surface as the lower blade 7.
  • the side cutting edge 8 should be turned outwards such that the edge outer edge of the side cutting edge 8 is outside the base surface 10 of the side blade 3 in any state.
  • the base surface 11 at the bottom of the seat 2 is a spherical surface, a curved surface or a plane; the lower cutting edge 7 is a hole edge, a straight edge or a curved edge.
  • the base surface 11 at the bottom of the seat 2 has little effect on the use of the acetabulum. It is only required that the shape of the base 11 does not interfere with the path of the lower cutting edge 7, but the outer edge of the lower edge of the lower cutting edge 7 is open at the acetabulum. After the maximum diameter, it should be on the same spherical surface as the outer edge of the blade edge of the side cutting edge 8.
  • the lower end of the side blade 3 is provided with a limiting protrusion 12, and the holder 2 is provided with a limiting groove 13 respectively matched with the limiting protrusion 12, and the limiting protrusion 12 is hinged in the limiting groove 13 .
  • the upper end of the side blade 3 is provided with a receiving groove 14 for receiving the end of the connecting rod 5, the connecting rod 5 is hinged in the receiving groove 14, and the other end of the connecting rod 5 is hinged with the sliding block 4.
  • the upper end of the arbor 1 is provided with a transmission portion 15 including a clamping groove 16 disposed at an end of the shank 1 and a positioning surface 17 disposed at one end of the shank 1 .
  • the transmission can be connected to any prior art drive mechanism to rotate the shank for cutting.
  • a variable diameter acetabulum includes a shank 1 and a shank 2 disposed at a lower end of the shank 1.
  • the knives 2 have a plurality of annular arrays of arbor 1 a side blade 3, the shank 1 is slidably provided with a sliding block 4, the sliding block 4 is movably connected to the side blade 3 through a connecting rod 5, and the connecting rod 5 is in one-to-one correspondence with the side blade 3,
  • An adjustable locking screw 6 is arranged on one side of the sliding block 4, and the bottom of the seat 2 has at least two lower cutting edges 7 along its rotational direction, and the side blades 3 are along a radial plane in the direction of rotation of the shank 1.
  • a side cutting edge 8 is provided.
  • the number of the side blades 3 is 2-5 pieces, and the lower cutting edge 7 is centered on the arbor 1 and has an annular array on the seat 2.
  • the lower cutting edge 7 and the side cutting edge 8 are approximately on the same spherical surface, and the diameter of the acetabulum is gradually enlarged during the cutting process.
  • the lower cutting edge 7 and the side cutting edge 8 are on the same spherical surface. The patient's acetabulum is cut to approximate the size of the prosthesis.
  • the shank 1 is provided with at least one guiding protrusion 9 along its length direction
  • the sliding block 4 is provided with a sliding groove (not shown) matching the guiding protrusion 9 , and the realization form of the sliding groove It can be implemented using any of the prior art.
  • the sliding block 4 slides axially on the shank 1, and the sliding block 4 is movably connected to the side blade 3 through the connecting rod 5, in order to ensure smooth operation, the guiding protrusion 9 is matched with the sliding groove to ensure sliding.
  • the uniformity of the axial movement of the block 4 prevents the sliding block 4 from rotating, and can relieve the torque force during the cutting process of the side blade 3 and improve the stability of the acetabulum.
  • the guide projections 9 described herein are preferably annularly arranged outside the shank 1 to ensure uniformity of force.
  • the guide protrusions 9 are provided with scales (shown in the drawings) in which the corresponding side blades 8 are opened with different diameters, and the scales described herein can be realized by any prior art.
  • the prior art acetabulum starts from the small acetabulum during the operation, and the acetabulum is progressively honed each time the knife body diameter is increased by 2 mm, so the scale on the guide protrusion 9 is preferably The scale corresponds to the expansion diameter of the cutter body of 2 mm.
  • the shank 1 is provided with a card position (shown in the figure) corresponding to the scale and corresponding to the locking screw 6.
  • a clamping position corresponding to the scale is arranged on the arbor 1 for cooperation with the locking screw 6, to ensure stable positioning, and at the same time, it is convenient to adjust and position, and the precision is high.
  • the card position described here only has to function as a limit, and can be implemented by any technique, such as forming a groove on the shank 1.
  • the base surface 10 on the outer side of the side blade 3 is a spherical surface, a curved surface or a plane.
  • the shape of the base surface 10 on the outer side of the side blade 3 has little effect on the use of the acetabulum, and only the path of the base surface 10 is not required to be cut with the side cutting edge 8.
  • the side cutting edge 8 is a hole edge, a straight edge, a curved edge or a variable curvature edge, but the outer edge of the blade edge of the side cutting edge 8 is curved, so that the acetabulum is opened to the maximum diameter and the outer edge of the blade edge It is on the same spherical surface as the lower blade 7.
  • the side cutting edge 8 should be turned outwards such that the edge outer edge of the side cutting edge 8 is outside the base surface 10 of the side blade 3 in any state.
  • the base surface 11 at the bottom of the seat 2 is a spherical surface, a curved surface or a plane; the lower cutting edge 7 is a hole edge, a straight edge or a curved edge.
  • the base surface 11 at the bottom of the seat 2 has little effect on the use of the acetabulum. It is only required that the shape of the base 11 does not interfere with the path of the lower cutting edge 7, but the outer edge of the lower edge of the lower cutting edge 7 is open at the acetabulum. After the maximum diameter, it should be on the same spherical surface as the outer edge of the blade edge of the side cutting edge 8.
  • the lower end of the side blade 3 is provided with a limiting protrusion 12, and the holder 2 is provided with a limiting groove 13 respectively matched with the limiting protrusion 12, and the limiting protrusion 12 is hinged in the limiting groove 13 .
  • the upper end of the side blade 3 is provided with a receiving groove 14 for receiving the end of the connecting rod 5, the connecting rod 5 is hinged in the receiving groove 14, and the other end of the connecting rod 5 is hinged with the sliding block 4.
  • the upper end of the arbor 1 is provided with a transmission portion 15 including a clamping groove 16 disposed at an end of the shank 1 and a positioning surface 17 disposed at one end of the shank 1 .
  • the transmission can be connected to any prior art drive mechanism to rotate the shank for cutting.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
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Abstract

A variable-diameter acetabulum file comprises a cutter shaft (1) and a cutter holder (2) disposed at the lower end of the cutter shaft (1). Multiple side cutter blades (3) are circumferentially arranged on the cutter holder (2) around the axial center of the cutter shaft (1). A sliding block (4) is slidably disposed on the cutter shaft (1), and is movably connected to the side cutter blades (3) by means of connecting rods (5). The connecting rods (5) and the side cutter blades (3) are in a one-to-one correspondence. An adjustable locking screw (6) is disposed at one side of the sliding block (4). At least two lower cutter edges (7) are formed at the bottom of the cutter holder (2) in the rotating direction of the cutter holder (2). Side cutter edges (8) are formed on the radial surface of the side cutter blades (3) in the rotating direction of the cutter shaft (1). The steps of an acetabulum rebuilding operation can be completed in a single entry to the body of the variable-diameter acetabulum file; operation time and surgeon burden are reduced; off-centering, loss of coaxiality, and tissue injury due to acetabulum file replacement are reduced.

Description

一种变径髋臼锉Variant acetabular 技术领域Technical field
本发明涉及医学设备领域，具体涉及一种变径髋臼锉。The invention relates to the field of medical equipment, and in particular to a variable diameter acetabulum.
背景技术Background technique
髋臼锉是髋关节置换手术中处理髋臼窝必备的手术工具，主要的切削对象是髋臼软骨和少量的软骨下骨。在手术中，根据患者X光照推测髋臼的尺寸，选用刀体直径比髋臼尺寸小4mm的髋臼锉进行髋臼重建。通过髋臼锉表面的干切削齿在一定压力作用条件下的低转速运动，切除患者髋关节处的坏死组织，顶端的齿刃同时会对髋臼软骨与软骨下骨两种不同组织进行切削。由小号髋臼锉开始，每次增加刀体直径2mm对髋臼进行递进磨锉。刀体应完全座入髋臼内，使患者的髋臼切削成与假体外形尺寸相接近。必须使得髋臼锉磨到足够的深度，直到髋臼达到最后要求的尺寸，从而实现髋臼重建。The acetabulum is an essential surgical tool for the treatment of acetabular fossa in hip replacement surgery. The main subjects are acetabular cartilage and a small amount of subchondral bone. During the operation, the size of the acetabulum was estimated according to the patient's X-ray, and the acetabulum with a diameter of 4 mm smaller than the size of the acetabulum was used for acetabular reconstruction. Through the low-speed movement of the dry cutting teeth on the acetabular surface under certain pressure conditions, the necrotic tissue at the hip joint of the patient is removed, and the apical tooth edge simultaneously cuts two different tissues of the acetabular cartilage and the subchondral bone. Starting from the small acetabulum, the acetabulum was progressively honed each time the knife body diameter was increased by 2 mm. The body should be completely seated in the acetabulum, so that the patient's acetabulum is cut to the size of the prosthesis. The acetabulum must be ground to a sufficient depth until the acetabulum reaches the final required size for acetabular reconstruction.
在临床使用时，需要不断的更换大小不一的髋臼锉（直径从小到大），临床不断更换手术器械不但会提高医生的负担、增加手术时间，而且容易导致髋臼重建过程中对心不准，导致假体安装位置不合适，影响手术效果，严重时直接导致手术失败。In clinical use, it is necessary to constantly change the acetabulum of different sizes (small to large diameter). The continuous replacement of surgical instruments in the clinic will not only increase the burden on the doctor, increase the operation time, but also easily lead to the acetabular reconstruction process. Accurate, resulting in improper installation of the prosthesis, affecting the surgical effect, and directly lead to surgery failure.
技术问题technical problem
在临床使用时，需要不断的更换大小不一的髋臼锉（直径从小到大），临床不断更换手术器械不但会提高医生的负担、增加手术时间，而且容易导致髋臼重建过程中对心不准，导致假体安装位置不合适，影响手术效果，严重时直接导致手术失败。In clinical use, it is necessary to constantly change the acetabulum of different sizes (small to large diameter). The continuous replacement of surgical instruments in the clinic will not only increase the burden on the doctor, increase the operation time, but also easily lead to the acetabular reconstruction process. Accurate, resulting in improper installation of the prosthesis, affecting the surgical effect, and directly lead to surgery failure.
技术解决方案Technical solution
本发明所要解决的技术问题采用以下技术方案来实现 ：The technical problem to be solved by the present invention is implemented by the following technical solutions:
一种变径髋臼锉，包括刀杆及设置于刀杆下端的刀座，所述刀座上以刀杆为轴心环形阵列有多个侧刀片，所述刀杆上可滑动设置有滑动块，所述滑动块通过连接杆与侧刀片活动连接，所述连接杆与侧刀片一一对应，所述滑动块一侧设置有可调节的锁紧螺丝，所述刀座底部沿其转动方向至少开有两个下刀刃，所述侧刀片沿刀杆转动方向的径向面上开设有侧刀刃。A variable diameter acetabulum comprising a shank and a shank disposed at a lower end of the shank, wherein the arbor has a plurality of side blades with an axial array of the arbor, and the shank is slidably provided with a sliding Block, the sliding block is movably connected to the side blade through a connecting rod, the connecting rod is in one-to-one correspondence with the side blade, and one side of the sliding block is provided with an adjustable locking screw, and the bottom of the seat is along the rotating direction thereof At least two lower cutting edges are opened, and the side blades are provided with side cutting edges on a radial surface in the rotating direction of the arbor.
所述下刀刃与侧刀刃近似在同一球面上。The lower cutting edge and the side cutting edge are approximately on the same spherical surface.
所述刀杆上沿其长度方向设置有至少一个导向凸起，所述滑动块上设置有与导向凸起匹配的滑动凹槽。The arbor is provided with at least one guiding protrusion along its length direction, and the sliding block is provided with a sliding groove matching the guiding protrusion.
所述导向凸起上设置有对应侧刀刃张开不同直径的刻度。The guide protrusions are provided with scales corresponding to different diameters of the corresponding side edges.
所述刀杆上设置有分别与刻度对应且与锁紧螺丝对应的卡位。The shank is provided with a card position corresponding to the scale and corresponding to the locking screw.
所述侧刀片外侧的基面为球面、曲面或平面；所述侧刀刃为孔刃、直刃、弧形刃或变曲率刃。The base surface on the outer side of the side blade is a spherical surface, a curved surface or a plane; the side cutting edge is a hole edge, a straight edge, a curved edge or a variable curvature edge.
所述刀座底部的基面为球面、曲面或平面；所述下刀刃为孔刃、直刃或弧形刃。The base surface of the bottom of the knife seat is a spherical surface, a curved surface or a plane; the lower cutting edge is a hole edge, a straight edge or a curved edge.
所述侧刀片下端设置有限位凸起，所述刀座设置有分别与限位凸起匹配的限位凹槽，所述限位凸起铰接于限位凹槽内。The lower end of the side blade is provided with a finite position protrusion, and the knife seat is provided with a limiting groove respectively matched with the limiting protrusion, and the limiting protrusion is hinged in the limiting groove.
所述侧刀片上端设置有容纳连接杆端部的容纳槽，所述连接杆铰接于容纳槽内，所述连接杆另一端与滑动块铰接。The upper end of the side blade is provided with a receiving groove for receiving the end of the connecting rod, the connecting rod is hinged in the receiving groove, and the other end of the connecting rod is hinged with the sliding block.
所述刀杆上端设置有传动部，所述传动部包括设置于刀杆端部的卡紧槽及设置于刀杆端部一侧的定位面。The upper end of the arbor is provided with a transmission portion, and the transmission portion includes a clamping groove disposed at an end of the shank and a positioning surface disposed at one end of the shank end.
具体使用步骤：根据所需直径选取一定规格的可变径髋臼锉（最大直径就是髋臼重建假体的配合直径），将髋臼锉与动力装置连接，旋松锁紧螺丝，调整滑动块的位置，使得可变径髋臼锉的直径为所需的大小，旋紧锁紧螺丝、整个髋臼锉就被锁定了，进行手术操作；下一步，再次调整可变径髋臼锉的大小，进行下一步操作，直至重建手术结束。Specific use steps: Select a certain size variable diameter acetabulum according to the required diameter (the maximum diameter is the matching diameter of the acetabular reconstruction prosthesis), connect the acetabulum with the power unit, loosen the locking screw, and adjust the sliding block. The position of the variable diameter acetabulum is the required size, the locking screw is tightened, the entire acetabulum is locked, and the operation is performed; next, the size of the variable diameter acetabulum is adjusted again. , proceed to the next step until the end of the reconstruction surgery.
有益效果Beneficial effect
本发明通过连接杆与滑动块构成的机构实现侧刀片的扩展，锁定螺母实现锁定。可变径髋臼锉的最大直径时，刀刃的有效切削部位是在同一所需球面上。在髋臼锉的实际应用中，不同直径的髋臼锉切削的位置不同，小直径切底部、大直径切外缘，且不同直径的髋臼锉有效切削部分曲率相差不大，即使有偏差最后也会在最大锉削直径时将偏差进行切削修正，因而将侧刀片进行扩展也能够得到所需要的假体安装球面。The invention realizes the expansion of the side blades by the mechanism formed by the connecting rod and the sliding block, and the locking nut realizes the locking. When the maximum diameter of the variable diameter acetabulum is used, the effective cutting position of the blade is on the same desired spherical surface. In the actual application of the acetabulum, the positions of the acetabulum with different diameters are different. The small diameter cuts the bottom and the large diameter cuts the outer edge, and the curvature of the effective cutting part of the acetabulum with different diameters is not much different, even if there is a deviation. The deviation is also corrected for the maximum boring diameter, so that the side insert can be expanded to obtain the desired prosthetic mounting spherical surface.
能够在一次进入体内完成髋臼重建手术步骤，减少手术时间和医生操作负担，减少因更换髋臼锉导致的不同心不同轴和组织损伤。It can complete the acetabular reconstruction procedure in one go, reduce the operation time and doctor's operation burden, and reduce the different shaft and tissue damage caused by the replacement of the acetabulum.
附图说明DRAWINGS
图1是本发明的结构示意图。Figure 1 is a schematic view of the structure of the present invention.
图2是本发明的局部结构示意图。Figure 2 is a schematic partial view of the structure of the present invention.
图3是本发明的侧视结构示意图。Figure 3 is a schematic side view of the structure of the present invention.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
如图1-图3所示，一种变径髋臼锉，包括刀杆1及设置于刀杆1下端的刀座2，所述刀座2上以刀杆1为轴心环形阵列有多个侧刀片3，所述刀杆1上可滑动设置有滑动块4，所述滑动块4通过连接杆5与侧刀片3活动连接，所述连接杆5与侧刀片3一一对应，所述滑动块4一侧设置有可调节的锁紧螺丝6，所述刀座2底部沿其转动方向至少开有两个下刀刃7，所述侧刀片3沿刀杆1转动方向的径向面上开设有侧刀刃8。As shown in FIG. 1 to FIG. 3, a variable diameter acetabulum includes a shank 1 and a shank 2 disposed at a lower end of the shank 1. The knives 2 have a plurality of annular arrays of arbor 1 a side blade 3, the shank 1 is slidably provided with a sliding block 4, the sliding block 4 is movably connected to the side blade 3 through a connecting rod 5, and the connecting rod 5 is in one-to-one correspondence with the side blade 3, An adjustable locking screw 6 is arranged on one side of the sliding block 4, and the bottom of the seat 2 has at least two lower cutting edges 7 along its rotational direction, and the side blades 3 are along a radial plane in the direction of rotation of the shank 1. A side cutting edge 8 is provided.
优选的，所述侧刀片3的数量为2-5块，所述下刀刃7以刀杆1为轴心，在刀座2上呈环形阵列。Preferably, the number of the side blades 3 is 2-5 pieces, and the lower cutting edge 7 is centered on the arbor 1 and has an annular array on the seat 2.
所述下刀刃7与侧刀刃8近似在同一球面上，在切削过程中逐步扩大髋臼锉的直径，当髋臼锉张开至最大直径时，下刀刃7与侧刀刃8在同一球面上，使患者的髋臼切削成与假体外形尺寸相接近。The lower cutting edge 7 and the side cutting edge 8 are approximately on the same spherical surface, and the diameter of the acetabulum is gradually enlarged during the cutting process. When the acetabulum is opened to the maximum diameter, the lower cutting edge 7 and the side cutting edge 8 are on the same spherical surface. The patient's acetabulum is cut to approximate the size of the prosthesis.
所述刀杆1上沿其长度方向设置有至少一个导向凸起9，所述滑动块4上设置有与导向凸起9匹配的滑动凹槽（图中未出示），滑动凹槽的实现形式可采用任一现有技术实现。考虑到滑动块4在刀杆1上轴向滑动，同时滑动块4通过连接杆5与侧刀片3活动连接，为保证运作的顺畅性，设置导向凸起9与滑动凹槽相匹配，确保滑动块4轴向运动的一致性，防止滑动块4产生转动，在侧刀片3切割过程中能够缓解扭矩力，提高髋臼锉的稳定性。这里所述的导向凸起9最好环形阵列于刀杆1外侧，以确保受力的均匀性。The shank 1 is provided with at least one guiding protrusion 9 along its length direction, and the sliding block 4 is provided with a sliding groove (not shown) matching the guiding protrusion 9 , and the realization form of the sliding groove It can be implemented using any of the prior art. Considering that the sliding block 4 slides axially on the shank 1, and the sliding block 4 is movably connected to the side blade 3 through the connecting rod 5, in order to ensure smooth operation, the guiding protrusion 9 is matched with the sliding groove to ensure sliding. The uniformity of the axial movement of the block 4 prevents the sliding block 4 from rotating, and can relieve the torque force during the cutting process of the side blade 3 and improve the stability of the acetabulum. The guide projections 9 described herein are preferably annularly arranged outside the shank 1 to ensure uniformity of force.
所述导向凸起9上设置有对应侧刀刃8张开不同直径的刻度（图中为出示），这里所述的刻度可采用任一现有技术实现。现有技术的髋臼锉在手术进行时，由小号髋臼锉开始，每次增加刀体直径2mm对髋臼进行递进磨锉，因此所述的导向凸起9上的刻度优选为每个刻度对应刀体扩张直径2mm。 The guide protrusions 9 are provided with scales (shown in the drawings) in which the corresponding side blades 8 are opened with different diameters, and the scales described herein can be realized by any prior art. The prior art acetabulum starts from the small acetabulum during the operation, and the acetabulum is progressively honed each time the knife body diameter is increased by 2 mm, so the scale on the guide protrusion 9 is preferably The scale corresponds to the expansion diameter of the cutter body of 2 mm.
所述刀杆1上设置有分别与刻度对应且与锁紧螺丝6对应的卡位（图中为出示）。考虑到采用锁紧螺丝6进行固定存在的稳固性问题，在刀杆1上设置与刻度对应的卡位用于与锁紧螺丝6配合，确保定位稳固，同时便于调节定位，精准度高。这里所述的卡位仅要起到限位作用，可选用任一技术实现，如在刀杆1上开设凹槽。The shank 1 is provided with a card position (shown in the figure) corresponding to the scale and corresponding to the locking screw 6. Considering the stability problem of fixing by using the locking screw 6, a clamping position corresponding to the scale is arranged on the arbor 1 for cooperation with the locking screw 6, to ensure stable positioning, and at the same time, it is convenient to adjust and position, and the precision is high. The card position described here only has to function as a limit, and can be implemented by any technique, such as forming a groove on the shank 1.
所述侧刀片3外侧的基面10为球面、曲面或平面，侧刀片3外侧的基面10形状对髋臼锉的使用影响不大，仅要求基面10形状不与侧刀刃8切割的路径相干涉；所述侧刀刃8为孔刃、直刃、弧形刃或变曲率刃，但侧刀刃8的刃锋外缘呈弧形，使髋臼锉张开至最大直径后刃锋外缘与下刀刃7在同一球面上。优选的，所述侧刀刃8应向外翻起，使侧刀刃8的刃锋外缘在任何状态均处于侧刀片3的基面10以外。The base surface 10 on the outer side of the side blade 3 is a spherical surface, a curved surface or a plane. The shape of the base surface 10 on the outer side of the side blade 3 has little effect on the use of the acetabulum, and only the path of the base surface 10 is not required to be cut with the side cutting edge 8. Interference; the side cutting edge 8 is a hole edge, a straight edge, a curved edge or a variable curvature edge, but the outer edge of the blade edge of the side cutting edge 8 is curved, so that the acetabulum is opened to the maximum diameter and the outer edge of the blade edge It is on the same spherical surface as the lower blade 7. Preferably, the side cutting edge 8 should be turned outwards such that the edge outer edge of the side cutting edge 8 is outside the base surface 10 of the side blade 3 in any state.
所述刀座2底部的基面11为球面、曲面或平面；所述下刀刃7为孔刃、直刃或弧形刃。刀座2底部的基面11对髋臼锉的使用影响不大，仅要求基面11形状不与下刀刃7切割的路径相干涉，但下刀刃7的刃锋外缘在髋臼锉张开至最大直径后应与侧刀刃8的刃锋外缘处于同一球面上。The base surface 11 at the bottom of the seat 2 is a spherical surface, a curved surface or a plane; the lower cutting edge 7 is a hole edge, a straight edge or a curved edge. The base surface 11 at the bottom of the seat 2 has little effect on the use of the acetabulum. It is only required that the shape of the base 11 does not interfere with the path of the lower cutting edge 7, but the outer edge of the lower edge of the lower cutting edge 7 is open at the acetabulum. After the maximum diameter, it should be on the same spherical surface as the outer edge of the blade edge of the side cutting edge 8.
上述所说的孔刃、直刃、弧形刃、变曲率刃均可选用任一现有技术实现。The above-mentioned hole edge, straight edge, curved edge and variable curvature edge can be realized by any prior art.
所述侧刀片3下端设置有限位凸起12，所述刀座2设置有分别与限位凸起12匹配的限位凹槽13，所述限位凸起12铰接于限位凹槽13内。The lower end of the side blade 3 is provided with a limiting protrusion 12, and the holder 2 is provided with a limiting groove 13 respectively matched with the limiting protrusion 12, and the limiting protrusion 12 is hinged in the limiting groove 13 .
所述侧刀片3上端设置有容纳连接杆5端部的容纳槽14，所述连接杆5铰接于容纳槽14内，所述连接杆5另一端与滑动块4铰接。The upper end of the side blade 3 is provided with a receiving groove 14 for receiving the end of the connecting rod 5, the connecting rod 5 is hinged in the receiving groove 14, and the other end of the connecting rod 5 is hinged with the sliding block 4.
所述刀杆1上端设置有传动部15，所述传动部15包括设置于刀杆1端部的卡紧槽16及设置于刀杆1端部一侧的定位面17。传动部可连接任一现有技术的驱动机构，使刀杆转动实现切削。The upper end of the arbor 1 is provided with a transmission portion 15 including a clamping groove 16 disposed at an end of the shank 1 and a positioning surface 17 disposed at one end of the shank 1 . The transmission can be connected to any prior art drive mechanism to rotate the shank for cutting.
具体使用步骤：根据所需直径选取一定规格的可变径髋臼锉（最大直径就是髋臼重建假体的配合直径），将髋臼锉与动力装置连接，旋松锁紧螺丝，调整滑动块的位置，使得可变径髋臼锉的直径为所需的大小，旋紧锁紧螺丝、整个髋臼锉就被锁定了，进行手术操作；下一步，再次调整可变径髋臼锉的大小，进行下一步操作，直至重建手术结束。Specific use steps: Select a certain size variable diameter acetabulum according to the required diameter (the maximum diameter is the matching diameter of the acetabular reconstruction prosthesis), connect the acetabulum with the power unit, loosen the locking screw, and adjust the sliding block. The position of the variable diameter acetabulum is the required size, the locking screw is tightened, the entire acetabulum is locked, and the operation is performed; next, the size of the variable diameter acetabulum is adjusted again. , proceed to the next step until the end of the reconstruction surgery.
本发明的实施方式Embodiments of the invention
如图1-图3所示，一种变径髋臼锉，包括刀杆1及设置于刀杆1下端的刀座2，所述刀座2上以刀杆1为轴心环形阵列有多个侧刀片3，所述刀杆1上可滑动设置有滑动块4，所述滑动块4通过连接杆5与侧刀片3活动连接，所述连接杆5与侧刀片3一一对应，所述滑动块4一侧设置有可调节的锁紧螺丝6，所述刀座2底部沿其转动方向至少开有两个下刀刃7，所述侧刀片3沿刀杆1转动方向的径向面上开设有侧刀刃8。As shown in FIG. 1 to FIG. 3, a variable diameter acetabulum includes a shank 1 and a shank 2 disposed at a lower end of the shank 1. The knives 2 have a plurality of annular arrays of arbor 1 a side blade 3, the shank 1 is slidably provided with a sliding block 4, the sliding block 4 is movably connected to the side blade 3 through a connecting rod 5, and the connecting rod 5 is in one-to-one correspondence with the side blade 3, An adjustable locking screw 6 is arranged on one side of the sliding block 4, and the bottom of the seat 2 has at least two lower cutting edges 7 along its rotational direction, and the side blades 3 are along a radial plane in the direction of rotation of the shank 1. A side cutting edge 8 is provided.
优选的，所述侧刀片3的数量为2-5块，所述下刀刃7以刀杆1为轴心，在刀座2上呈环形阵列。Preferably, the number of the side blades 3 is 2-5 pieces, and the lower cutting edge 7 is centered on the arbor 1 and has an annular array on the seat 2.
所述下刀刃7与侧刀刃8近似在同一球面上，在切削过程中逐步扩大髋臼锉的直径，当髋臼锉张开至最大直径时，下刀刃7与侧刀刃8在同一球面上，使患者的髋臼切削成与假体外形尺寸相接近。The lower cutting edge 7 and the side cutting edge 8 are approximately on the same spherical surface, and the diameter of the acetabulum is gradually enlarged during the cutting process. When the acetabulum is opened to the maximum diameter, the lower cutting edge 7 and the side cutting edge 8 are on the same spherical surface. The patient's acetabulum is cut to approximate the size of the prosthesis.
所述刀杆1上沿其长度方向设置有至少一个导向凸起9，所述滑动块4上设置有与导向凸起9匹配的滑动凹槽（图中未出示），滑动凹槽的实现形式可采用任一现有技术实现。考虑到滑动块4在刀杆1上轴向滑动，同时滑动块4通过连接杆5与侧刀片3活动连接，为保证运作的顺畅性，设置导向凸起9与滑动凹槽相匹配，确保滑动块4轴向运动的一致性，防止滑动块4产生转动，在侧刀片3切割过程中能够缓解扭矩力，提高髋臼锉的稳定性。这里所述的导向凸起9最好环形阵列于刀杆1外侧，以确保受力的均匀性。The shank 1 is provided with at least one guiding protrusion 9 along its length direction, and the sliding block 4 is provided with a sliding groove (not shown) matching the guiding protrusion 9 , and the realization form of the sliding groove It can be implemented using any of the prior art. Considering that the sliding block 4 slides axially on the shank 1, and the sliding block 4 is movably connected to the side blade 3 through the connecting rod 5, in order to ensure smooth operation, the guiding protrusion 9 is matched with the sliding groove to ensure sliding. The uniformity of the axial movement of the block 4 prevents the sliding block 4 from rotating, and can relieve the torque force during the cutting process of the side blade 3 and improve the stability of the acetabulum. The guide projections 9 described herein are preferably annularly arranged outside the shank 1 to ensure uniformity of force.
所述导向凸起9上设置有对应侧刀刃8张开不同直径的刻度（图中为出示），这里所述的刻度可采用任一现有技术实现。现有技术的髋臼锉在手术进行时，由小号髋臼锉开始，每次增加刀体直径2mm对髋臼进行递进磨锉，因此所述的导向凸起9上的刻度优选为每个刻度对应刀体扩张直径2mm。 The guide protrusions 9 are provided with scales (shown in the drawings) in which the corresponding side blades 8 are opened with different diameters, and the scales described herein can be realized by any prior art. The prior art acetabulum starts from the small acetabulum during the operation, and the acetabulum is progressively honed each time the knife body diameter is increased by 2 mm, so the scale on the guide protrusion 9 is preferably The scale corresponds to the expansion diameter of the cutter body of 2 mm.
所述刀杆1上设置有分别与刻度对应且与锁紧螺丝6对应的卡位（图中为出示）。考虑到采用锁紧螺丝6进行固定存在的稳固性问题，在刀杆1上设置与刻度对应的卡位用于与锁紧螺丝6配合，确保定位稳固，同时便于调节定位，精准度高。这里所述的卡位仅要起到限位作用，可选用任一技术实现，如在刀杆1上开设凹槽。The shank 1 is provided with a card position (shown in the figure) corresponding to the scale and corresponding to the locking screw 6. Considering the stability problem of fixing by using the locking screw 6, a clamping position corresponding to the scale is arranged on the arbor 1 for cooperation with the locking screw 6, to ensure stable positioning, and at the same time, it is convenient to adjust and position, and the precision is high. The card position described here only has to function as a limit, and can be implemented by any technique, such as forming a groove on the shank 1.
所述侧刀片3外侧的基面10为球面、曲面或平面，侧刀片3外侧的基面10形状对髋臼锉的使用影响不大，仅要求基面10形状不与侧刀刃8切割的路径相干涉；所述侧刀刃8为孔刃、直刃、弧形刃或变曲率刃，但侧刀刃8的刃锋外缘呈弧形，使髋臼锉张开至最大直径后刃锋外缘与下刀刃7在同一球面上。优选的，所述侧刀刃8应向外翻起，使侧刀刃8的刃锋外缘在任何状态均处于侧刀片3的基面10以外。The base surface 10 on the outer side of the side blade 3 is a spherical surface, a curved surface or a plane. The shape of the base surface 10 on the outer side of the side blade 3 has little effect on the use of the acetabulum, and only the path of the base surface 10 is not required to be cut with the side cutting edge 8. Interference; the side cutting edge 8 is a hole edge, a straight edge, a curved edge or a variable curvature edge, but the outer edge of the blade edge of the side cutting edge 8 is curved, so that the acetabulum is opened to the maximum diameter and the outer edge of the blade edge It is on the same spherical surface as the lower blade 7. Preferably, the side cutting edge 8 should be turned outwards such that the edge outer edge of the side cutting edge 8 is outside the base surface 10 of the side blade 3 in any state.
所述刀座2底部的基面11为球面、曲面或平面；所述下刀刃7为孔刃、直刃或弧形刃。刀座2底部的基面11对髋臼锉的使用影响不大，仅要求基面11形状不与下刀刃7切割的路径相干涉，但下刀刃7的刃锋外缘在髋臼锉张开至最大直径后应与侧刀刃8的刃锋外缘处于同一球面上。The base surface 11 at the bottom of the seat 2 is a spherical surface, a curved surface or a plane; the lower cutting edge 7 is a hole edge, a straight edge or a curved edge. The base surface 11 at the bottom of the seat 2 has little effect on the use of the acetabulum. It is only required that the shape of the base 11 does not interfere with the path of the lower cutting edge 7, but the outer edge of the lower edge of the lower cutting edge 7 is open at the acetabulum. After the maximum diameter, it should be on the same spherical surface as the outer edge of the blade edge of the side cutting edge 8.
上述所说的孔刃、直刃、弧形刃、变曲率刃均可选用任一现有技术实现。The above-mentioned hole edge, straight edge, curved edge and variable curvature edge can be realized by any prior art.
所述侧刀片3下端设置有限位凸起12，所述刀座2设置有分别与限位凸起12匹配的限位凹槽13，所述限位凸起12铰接于限位凹槽13内。The lower end of the side blade 3 is provided with a limiting protrusion 12, and the holder 2 is provided with a limiting groove 13 respectively matched with the limiting protrusion 12, and the limiting protrusion 12 is hinged in the limiting groove 13 .
所述侧刀片3上端设置有容纳连接杆5端部的容纳槽14，所述连接杆5铰接于容纳槽14内，所述连接杆5另一端与滑动块4铰接。The upper end of the side blade 3 is provided with a receiving groove 14 for receiving the end of the connecting rod 5, the connecting rod 5 is hinged in the receiving groove 14, and the other end of the connecting rod 5 is hinged with the sliding block 4.
所述刀杆1上端设置有传动部15，所述传动部15包括设置于刀杆1端部的卡紧槽16及设置于刀杆1端部一侧的定位面17。传动部可连接任一现有技术的驱动机构，使刀杆转动实现切削。The upper end of the arbor 1 is provided with a transmission portion 15 including a clamping groove 16 disposed at an end of the shank 1 and a positioning surface 17 disposed at one end of the shank 1 . The transmission can be connected to any prior art drive mechanism to rotate the shank for cutting.
具体使用步骤：根据所需直径选取一定规格的可变径髋臼锉（最大直径就是髋臼重建假体的配合直径），将髋臼锉与动力装置连接，旋松锁紧螺丝，调整滑动块的位置，使得可变径髋臼锉的直径为所需的大小，旋紧锁紧螺丝、整个髋臼锉就被锁定了，进行手术操作；下一步，再次调整可变径髋臼锉的大小，进行下一步操作，直至重建手术结束。Specific use steps: Select a certain size variable diameter acetabulum according to the required diameter (the maximum diameter is the matching diameter of the acetabular reconstruction prosthesis), connect the acetabulum with the power unit, loosen the locking screw, and adjust the sliding block. The position of the variable diameter acetabulum is the required size, the locking screw is tightened, the entire acetabulum is locked, and the operation is performed; next, the size of the variable diameter acetabulum is adjusted again. , proceed to the next step until the end of the reconstruction surgery.
工业实用性Industrial applicability
能够在一次进入体内完成髋臼重建手术步骤，减少手术时间和医生操作负担，减少因更换髋臼锉导致的不同心不同轴和组织损伤,适合临床使用。It can complete the acetabular reconstruction operation step in one body, reduce the operation time and the doctor's operation burden, reduce the different shaft and tissue damage caused by the replacement of the acetabulum, and is suitable for clinical use.
 

Claims (10)

  1. 一种变径髋臼锉，其特征在于：包括刀杆及设置于刀杆下端的刀座，所述刀座上以刀杆为轴心环形阵列有多个侧刀片，所述刀杆上可滑动设置有滑动块，所述滑动块通过连接杆与侧刀片活动连接，所述连接杆与侧刀片一一对应，所述滑动块一侧设置有可调节的锁紧螺丝，所述刀座底部沿其转动方向至少开有两个下刀刃，所述侧刀片沿刀杆转动方向的径向面上开设有侧刀刃。A variable diameter acetabulum, comprising: a shank and a shank disposed at a lower end of the shank, wherein the arbor has a plurality of side blades with an axial array of the arbor, and the arbor can be The sliding block is provided with a sliding block, and the sliding block is movably connected to the side blade through a connecting rod, the connecting rod is in one-to-one correspondence with the side blade, and one side of the sliding block is provided with an adjustable locking screw, the bottom of the holder At least two lower cutting edges are opened along the direction of rotation thereof, and the side blades are provided with side cutting edges on a radial surface in the rotating direction of the cutter bar.
  2. 根据权利要求1所述的一种变径髋臼锉，其特征在于：所述下刀刃与侧刀刃近似在同一球面上。A variable diameter acetabulum according to claim 1, wherein said lower cutting edge and said side cutting edge are approximately on the same spherical surface.
  3. 根据权利要求1所述的一种变径髋臼锉，其特征在于：所述刀杆上沿其长度方向设置有至少一个导向凸起，所述滑动块上设置有与导向凸起匹配的滑动凹槽。A variable diameter acetabulum according to claim 1, wherein the arbor is provided with at least one guiding protrusion along its length direction, and the sliding block is provided with a sliding matching with the guiding protrusion. Groove.
  4. 根据权利要求3所述的一种变径髋臼锉，其特征在于：所述导向凸起上设置有对应侧刀刃张开不同直径的刻度。A variable diameter acetabulum according to claim 3, wherein the guide projections are provided with scales corresponding to different diameters of the respective side edges.
  5. 根据权利要求4所述的一种变径髋臼锉，其特征在于：所述刀杆上设置有分别与刻度对应且与锁紧螺丝对应的卡位。A variable diameter acetabulum according to claim 4, wherein the knife bar is provided with a card position corresponding to the scale and corresponding to the locking screw.
  6. 根据权利要求2所述的一种变径髋臼锉，其特征在于：所述侧刀片外侧的基面为球面、曲面或平面；所述侧刀刃为孔刃、直刃、弧形刃或变曲率刃。The invention relates to a variable diameter acetabulum according to claim 2, wherein the base surface on the outer side of the side blade is a spherical surface, a curved surface or a plane; the side cutting edge is a hole edge, a straight edge, a curved edge or a change Curvature edge.
  7. 根据权利要求2所述的一种变径髋臼锉，其特征在于：所述刀座底部的基面为球面、曲面或平面；所述下刀刃为孔刃、直刃或弧形刃。The invention relates to a variable diameter acetabulum according to claim 2, wherein the base surface of the bottom of the seat is a spherical surface, a curved surface or a plane; and the lower cutting edge is a hole edge, a straight edge or a curved edge.
  8. 根据权利要求1所述的一种变径髋臼锉，其特征在于：所述侧刀片下端设置有限位凸起，所述刀座设置有分别与限位凸起匹配的限位凹槽，所述限位凸起铰接于限位凹槽内。The invention relates to a variable diameter acetabulum according to claim 1, wherein: the lower end of the side blade is provided with a finite position protrusion, and the knife seat is provided with a limiting groove respectively matched with the limiting protrusion. The limit protrusion is hinged in the limiting groove.
  9. 根据权利要求1所述的一种变径髋臼锉，其特征在于：所述侧刀片上端设置有容纳连接杆端部的容纳槽，所述连接杆铰接于容纳槽内，所述连接杆另一端与滑动块铰接。The invention relates to a variable diameter acetabulum according to claim 1, wherein the upper end of the side blade is provided with a receiving groove for receiving the end of the connecting rod, the connecting rod is hinged in the receiving groove, and the connecting rod is further One end is hinged to the sliding block.
  10. 根据权利要求1-9任一项所述的一种变径髋臼锉，其特征在于：所述刀杆上端设置有传动部，所述传动部包括设置于刀杆端部的卡紧槽及设置于刀杆端部一侧的定位面。The adjustable acetabulum according to any one of claims 1-9, wherein the upper end of the arbor is provided with a transmission portion, and the transmission portion includes a clamping groove disposed at an end of the shank and A positioning surface provided on one side of the end of the shank.
PCT/CN2018/079354 2017-11-14 2018-03-16 Variable-diameter acetabulum file WO2019095593A1 (en)

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CN112842449B (en) * 2020-12-23 2022-02-25 中国人民解放军空军军医大学 Medical surgical drill bit
CN113116476A (en) * 2021-04-20 2021-07-16 杨丽俊 Cerebral hemorrhage puncture drainage device with adjustable suction angle

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