WO2018021134A1 - 骨手術用圧迫器具 - Google Patents
骨手術用圧迫器具 Download PDFInfo
- Publication number
- WO2018021134A1 WO2018021134A1 PCT/JP2017/026224 JP2017026224W WO2018021134A1 WO 2018021134 A1 WO2018021134 A1 WO 2018021134A1 JP 2017026224 W JP2017026224 W JP 2017026224W WO 2018021134 A1 WO2018021134 A1 WO 2018021134A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bone
- bone surgery
- tibia
- pressing
- compression
- Prior art date
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
- A61B17/8019—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones where the means are a separate tool rather than being part of the plate
-
- 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
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
-
- 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
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
-
- 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
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/808—Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
-
- 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
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/809—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with bone-penetrating elements, e.g. blades or prongs
-
- 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
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8095—Wedge osteotomy devices
-
- 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
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
-
- 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
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
Definitions
- the present invention relates to a compression device for bone surgery.
- osteotomy is indicated, for example, when the articular cartilage of the patella and femur is damaged.
- bone is fixed with an osteosynthesis material such as a plate until bone is fused after cutting the bone to correct the bending of the bone (see, for example, Patent Document 1).
- Patent Document 1 discloses a bone holder that can hold both a bone and an osteosynthesis material in a state where the osteosynthesis material is positioned with respect to the bone. According to this bone retainer, the screw for fixing the bone bonding material to the bone is passed through the through hole formed in the support portion that supports the bone bonding material, while holding the bone and the bone bonding material in the bone. Since it can be driven in, it is possible to easily fix the bone cement to the bone.
- the present invention has been made in view of the above-described circumstances, and applies a compression force in both the radial direction and the longitudinal axis direction of the bone so that the bone, the bone cement, and the osteotomy surfaces of the bone are in close contact with each other.
- An object of the present invention is to provide a compression device for bone surgery.
- One aspect of the present invention is formed in a substantially columnar pressure member having a pressing surface composed of a convex spherical surface at one end, and a hook shape that engages with a side surface of a bone, and the pressing surface is connected to the other end at the other end.
- a compression instrument for bone surgery that supports the pressure member so as to be movable in the longitudinal direction toward the protrusion side.
- the protrusions and the support portions provided at both ends of the hook member are the bone and the bone bonding material.
- the pressure member is supported by the support portion by engaging the hook member with the side surface of the bone so as to sandwich the wire in the radial direction of the bone, and fixing the projection portion to the side surface of the bone by causing the projection portion to bite into the side surface of the bone. Is moved toward the protrusion side, and the osteosynthesis is pressed toward the bone by the pressing surface. Thereby, the bone and the bone bonding material can be brought into close contact with each other by applying a compression force in the radial direction of the bone to the bone and the bone bonding material sandwiched between the protrusion and the pressure member.
- the direction of the compression force applied to the bone and the bone bonding material coincides with the longitudinal direction that is the moving direction of the pressing member. Therefore, by engaging the hook member with the side surface of the bone so that the longitudinal direction of the pressure member is inclined with respect to the longitudinal axis direction of the bone, the compression force in both the radial direction and the longitudinal axis direction of the bone and In addition to the osteosynthesis material, the bone, the osteosynthesis material, and the osteotomy surfaces of the bone can be brought into close contact with each other.
- the hook member even when the hook member is engaged with the bone so that the pressure member is inclined with respect to the longitudinal axis direction of the bone, the protrusion provided at the other end of the hook member is fixed to the side surface of the bone.
- a large compressive force can be stably applied to the bone and osteosynthesis material between the protrusion and the pressure member.
- the hook member since the pressing surface in contact with the bone cement is substantially spherical, the hook member can be turned in the longitudinal direction of the bone by rotating the pressing surface at the same position with respect to the bone bonding material. It can be easily changed.
- the pressure member includes a male screw and a head portion provided at one end of the male screw and having the pressing surface, and the support portion includes a screw hole to which the male screw is fastened. You may have. By doing so, rotation of the male screw in the screw hole is converted into movement in the longitudinal direction of the shaft portion, so that fine adjustment of the movement amount of the male screw is facilitated and added to the bone and the bone cement.
- the compression force can be easily controlled.
- the said projection part may be located on the extension line
- the said projection part may be located in the position offset in the direction which cross
- a moment that intersects the longitudinal direction of the pressure member and is opposite to the offset direction of the projection is also added to the osteosynthesis material, The material can be moved not only in the direction approaching the bone but also in the direction opposite to the offset direction of the protrusion.
- a distance between an extension line of an axis along which the pressure member moves and an intermediate portion of the hook member may be 15 mm or more and 35 mm or less.
- the said projection part may have one or more cone-shaped protrusions which have a pointed end.
- the hook member is formed in a direction along the central axis of the screw hole while communicating the inner side of the screw hole and the outer side of the support portion in the radial direction of the screw hole.
- a slit may be inserted into the guide pin in the radial direction.
- a plug having a receiving portion having a concave receiving surface that supports the pressing surface, and a connecting portion connectable to an osteosynthesis material fixed to the side surface of the bone is provided. Also good.
- the said plug may have the through-hole which opens in the approximate center of the said receiving surface and the guide pin penetrates.
- the solid angle of the said receiving surface of the said receiving part may be 4 steradians or more.
- the solid angle of the receiving surface is more preferably 2 ⁇ steradians or more so that more than half of the outer surface of the head can be supported by the receiving surface.
- the present invention it is possible to apply a compressive force in both the radial direction and the longitudinal axis direction of the bone so that the bone, the bone cement, and the osteotomy surfaces of the bone can be brought into close contact with each other.
- the bone surgery compression instrument 1 excises a bone fragment from the outside of the tibia X and closes the excision site Y of the bone fragment to deform the tibia X. It is used in the high tibial osteotomy (CWHTO) by the closed wedge method in which the tibia X is corrected and fixed with the bone plate (bone cement) 10.
- FIGS. 1A to 1D show an example of a hybrid HTO that combines a closed wedge method and an open wedge method in which a cut is formed on the inner surface of the tibia X to open the cut.
- the bone plate 10 is an elongated strip-like member disposed on the side surface of the tibia X in a direction along the longitudinal axis of the tibia X.
- a plurality of screw holes 10a into which screws 20 for fixing the bone plate 10 to the tibia X are inserted are provided in the bone plate 10 at intervals in the longitudinal direction.
- Reference numeral 30 denotes a drill sleeve.
- the compression device 1 for bone surgery presses the hook member 2 that engages the side surface of the tibia X and the bone plate 10 toward the side surface of the tibia X so that the tibia X And a push screw (pressure member) 3 for applying a compression force to the bone plate 10.
- the hook member 2 and the push screw 3 are made of a high-strength metal such as titanium or stainless steel.
- the hook member 2 is curved in a substantially bowl shape and can be engaged with the side surface of the tibia X, a support portion 5 provided at one end of the bending portion 4 and supporting the push screw 3, and the other end of the bending portion 4. And a protrusion 6 that can be fixed to the side surface of the tibia X.
- the curved portion 4 is formed of a long and narrow columnar member, and is curved in a substantially bowl shape that surrounds the side surface of the tibia X from the outside to the inside of the tibia X over a substantially half circumference. With the curved portion 4 engaged with the side surface of the tibia X along the circumferential direction, the support portion 5 is disposed outside the tibia X, and the projection portion 6 is disposed inside the tibia X.
- the support portion 5 has a cylindrical shape having a cylindrical screw hole 5a penetrating in the longitudinal direction and having a thread groove formed on the inner surface.
- the screw hole 5a extends along a line connecting one end and the other end of the bending portion 4, and the protrusion 6 is located on an extension line of the central axis (axis line) A of the screw hole 5a.
- a thick bone such as the tibia X or the femur
- one end of the bending portion 4 and the other are arranged so that the push screw 3 is disposed at a position suitable for compression against the outer surface of the bone.
- the distance D between the intermediate portion and the extension line of the central axis A of the screw hole 5a is preferably 15 mm or more and 35 mm or less.
- the protruding portion 6 protrudes from the other end of the bending portion 4 toward the support portion 5 side. As shown in FIG. 3, a V-shaped groove is formed at the center of the tip of the projection 6, and thereby two cone-shaped projections each having a tip 6 b at the tip of the projection 6. 6a is formed.
- the protrusion 6 can be fixed to the tibia X by biting the tip 6 b of the protrusion 6 a into the side surface of the tibia X.
- the number of protrusions 6a provided at the tip of the protrusion 6 is not limited to two, and may be only one or three or more.
- one relatively large protrusion 6a may be provided, and as shown in FIG. 5, three or more protrusions 6a arranged in a circle are provided. Also good.
- the push screw 3 includes a straight cylindrical shaft portion 3a and a substantially spherical head portion 3b provided at one end of the shaft portion 3a.
- the surface of the head 3b opposite to the shaft portion 3a is a pressing surface 3c that is fitted in the screw hole 10a of the bone plate 10 and applies a pressing force to the bone plate 10, and is formed in a convex substantially spherical surface.
- the shaft portion 3a is a male screw that is threaded on the side surface and can be fastened to the screw hole 5a of the support portion 5.
- the shaft portion 3a is fastened in the screw hole 5a so that the pressing surface 3c of the head portion 3b faces the protruding portion 6 side.
- the push screw 3 moves in the longitudinal direction on the central axis (axis line) of the screw hole 5a, and the head 3b is screwed in a direction approaching or separating from the protruding portion 6. It moves on the extension line of the central axis A of the hole 5a.
- the bone surgery compression instrument 1 configured as described above.
- the bone plate 10 is disposed on the outer surface of the tibia X so as to straddle the resection site Y of the bone fragment, and the upper end of the bone plate 10 is positioned higher than the resection site Y.
- the part is fixed to the tibia X with the screw 20.
- the curved portion 4 of the hook member 2 is engaged with the side surface of the tibia X, and the tip 6b of the projection 6a is bitten into the inner side surface of the tibia X so that the projection portion 6 is brought into contact with the tibia X.
- the support portion 5 that supports the push screw 3 is arranged so that the bone plate 10 is sandwiched between the outer surface of the tibia X and the support portion 5.
- the pressing surface 3c of the head 3b is fitted into the screw hole 10a located on the lower side of the excision site Y, and the pressing screw 3 is advanced toward the bone plate 10 by rotating the shaft portion 3a.
- the distance between the head 3b and the protrusion 6 is reduced, and the tibia X and the bone plate 10 sandwiched between the head 3b and the protrusion 6 are mutually connected by the head 3b and the protrusion 6. It is pressed in the approaching direction.
- the center of the screw hole 5a that is the moving direction of the push screw 3 is formed on the tibia X and the bone plate 10. Only the compression force in the direction of the axis A is applied, and the tibia X and the bone plate 10 move only in the direction of the central axis A. 1D, after rotating the shaft portion 3a until the bone plate 10 comes into close contact with the outer surface of the tibia X, the screw 20 is inserted into the remaining screw hole 10a of the bone plate 10 to remove the bone plate 10. Fix to tibia X.
- the direction of the compression force applied to the tibia X and the bone plate 10 coincides with the direction of the central axis A of the screw hole 5a, and therefore, as shown in FIG.
- the direction of the compression force can be easily controlled in a desired direction.
- the tip 6b biting into the tibia X is once separated from the tibia X, the position of the projection 6 is shifted in the longitudinal axis direction of the tibia X, and then the tip 6b is moved again to the tibia X. You just need to let it bite into.
- the pressing surface 3c of the head 3b is spherical, by rotating the head 3b within the screw hole 10a, the position of the protrusion 6 can be easily shifted with the head 3b as a fulcrum.
- the direction of the compression force applied to the tibia X and the bone plate 10 can be easily changed.
- the shaft portion 3a is rotated in the opposite direction to push the push screw 3 into the bone plate.
- the compression screw 1 for bone surgery is attached to the push screw 3 and the central axis of the shaft portion 3 a so that it can be used in combination with the guide pin 40 of the screw 20.
- a through-hole 3d that penetrates along the guide pin 40 may be formed.
- the diameter of the through hole 3d is preferably 2 mm or more.
- a slit 2 a for inserting and removing the guide pin 40 in the support portion 5 in the radial direction may be formed in the hook member 2.
- the slit 2a penetrates from the outer peripheral surface to the inner peripheral surface of the support portion 5 so as to communicate the inside of the screw hole 5a and the outside of the support portion 5, and is formed over the entire length in the longitudinal direction.
- the hook member 2 having such a slit 2a after the guide pin 40 is inserted into the tibia X, the guide pin 40 is inserted into the support portion 5 through the slit 2a, whereby the hook member 2 is inserted into the tibia X. And can be easily placed relative to the bone plate 10.
- the slit 2 a may be formed so that the guide pin 40 is inserted into and removed from the screw hole 5 a through the bending portion 4. That is, the slit 2a may be formed over the entire length from the tip of the projection 6 to the screw hole 5a so as to divide the curved portion 4 and the projection 6 into two.
- the head 3b of the push screw 3 is directly fitted into the screw hole 10a of the bone plate 10, but instead, it can be attached to the screw hole 10a as shown in FIG.
- a plug 7 that supports the head 3b may be further provided.
- the plug 7 includes a connecting portion 7a made of a male screw that can be fastened to the screw hole 10a of the bone plate 10, and a receiving portion 7b that is provided on one end side of the connecting portion 7a and receives the head 3b. It has.
- the receiving portion 7b has a receiving surface 7c, which is formed of a concave substantially spherical surface complementary to the substantially spherical pressing surface 3c of the head 3b and supports the pressing surface 3c on the side opposite to the connection portion 7a.
- the solid angle of the receiving surface 7c is preferably 4 steradians or more, and more preferably 2 ⁇ steradians or more.
- the pressing surface 3c of the head 3b can be stably supported by the receiving surface 7c, and the head 3b can be rotated when the head 3b is rotated in the receiving surface 7c when adjusting the direction of the pressing force. It is possible to prevent the portion 3b from coming off from the receiving surface 7c.
- the shape of the receiving surface 7c is not necessarily limited to the concave spherical surface, and may be another shape that circumscribes the pressing surface 3c of the head 3b, for example, a polyhedral shape.
- a through hole 7 d through which the guide pin 40 can be passed may be formed in the plug 7 so that the plug 7 can be used in combination with the guide pin 40.
- the through hole 7d passes through the plug 7 along the central axis of the connection portion 7a and opens at the center of the receiving surface 7c.
- the diameter of the through hole 7d is preferably 2 mm or more, like the diameter of the through hole 3d of the push screw 3.
- the protrusion 6 is positioned on the extension line of the central axis A of the screw hole 5a, but instead, as shown in FIG. 11, the extension of the central axis A of the screw hole 5a.
- the protrusion 6 may be located at a position offset from the line in a direction intersecting the extension line. In this case, a moment in the direction opposite to the offset direction of the projection 6 is applied to the bone plate 10 so as to intersect the central axis A of the screw hole 5a. By this moment, the position of the bone plate 10 can be adjusted by moving the bone plate 10 in the width direction of the bone plate 10 with respect to the tibia X.
- the operator's human power is used as the driving force for advancing and retracting the push screw 3.
- the push screw 3 may be moved using hydraulic pressure or water pressure.
- An electric motor may be used.
- the press screw 3 is used as a pressurizing member for pressing the bone plate 10 to generate a compression force.
- another pressurizing member is used. May be.
- the pressing member 31 may include a shaft portion 31a having a smooth side surface instead of the male screw 3a.
- the support portion 51 may have a guide hole 51a that has a smooth inner surface and that fits the shaft portion 31a of the pressure member so as to be movable in the longitudinal direction.
- the shaft portion 31a may be driven using an instrument that converts a predetermined motion of the operator into a motion in the longitudinal direction of the shaft portion 31a.
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
Description
本発明の一態様は、一端に凸状の略球面からなる押圧面を有する略柱状の加圧部材と、骨の側面に係合する鉤状に形成され、一端に、前記押圧面を他端側に向けて前記加圧部材を支持する支持部を有し、前記他端に、前記支持部側へ向かって突出し前記骨の側面に食い込む突起部を有するフック部材とを備え、前記支持部が、前記加圧部材を前記突起部側に向かって長手方向に移動可能に支持する骨手術用圧迫器具である。
このようにすることで、ネジ孔内での雄ネジの回転が軸部の長手方向の移動に変換されるので、雄ネジの移動量の微調整が容易になり、骨および骨接合材に加える圧迫力の制御が容易になる。
このようにすることで、骨接合材に加圧部材の長手方向の押圧力のみを加えることができる。
このようにすることで、加圧部材の長手方向の押圧力に加えて、加圧部材の長手方向に交差し突起部のオフセット方向とは反対方向のモーメントも骨接合材に加えて、骨接合材を、骨に近接する方向のみならず、突起部のオフセット方向とは反対方向にも移動させることができる。
このようにすることで、フック部材の寸法を、大腿骨や脛骨等の大きな骨に好適な寸法とすることができる。
このようにすることで、骨の表面を覆う硬い皮質骨にも突起の尖端を食い込ませて容易に突起部を固定することができる。
このようにすることで、骨に予め挿入されたガイドピンに対してフック部材を容易に配置することができる。
このようにすることで、骨接合材に接続されたプラグの受部の受け面内に押圧面を嵌めることで、骨接合材に押圧面を直接押し当てる場合と比べて、骨接合材に対する押圧面の位置を安定させることができ、押圧面から骨接合材へ押圧力をより効率的に加えることができる。
このようにすることで、骨に挿入されたガイドピンを骨接合材、プラグおよび加圧部材に貫通させることで、骨に対して骨接合材、プラグおよび加圧部材の位置を安定させることができる。プラグの貫通孔の直径は、骨切り術で一般に使用されるガイドピンの直径を考慮して、2mm以上であることが好ましい。
このようにすることで、頭部の軸部とは反対側の面を受け面によってより安定的に支持することができ、加圧部材から骨接合材へ確実に押圧力を加えることができる。頭部の外面の半分以上を受け面で支持することができるように、受け面の立体角は2πステラジアン以上であることがより好ましい。
本実施形態に係る骨手術用圧迫器具1は、図1Aから図1Dに示されるように、脛骨Xの外側から骨片を切除し、骨片の切除部位Yを閉じることで脛骨Xの変形を矯正し、脛骨Xを骨プレート(骨接合材)10で固定するクローズドウェッジ法による高位脛骨骨切り術(CWHTO)において使用されるものである。図1Aから図1Dには、クローズドウェッジ法と、脛骨Xの内側面に切り込みを形成して切り込みを開大するオープンウェッジ法とを組み合せたハイブリッドHTOの例を示している。
本実施形態に係る骨手術用圧迫器具1を用いてハイブリッドHTO法により変形性膝関節症を治療するためには、脛骨Xの高位外側面から内側に向かって、脛骨Xの長手軸に対して傾斜する方向に2つの切り込みを形成し、2つの切り込み間の骨片を所定の器具を用いて除去する。次に、図1Aおよび図1Bに示されるように、骨片の切除部位Yを跨ぐように脛骨Xの外側面に骨プレート10を配置し、切除部位Yよりも高位側において骨プレート10の上端部を脛骨Xにスクリュ20で固定する。
図1Dに示されるように、骨プレート10が脛骨Xの外側面に密着するまで軸部3aを回転させた後、骨プレート10の残りのネジ孔10aにスクリュ20を挿入して骨プレート10を脛骨Xに固定する。
このようにすることで、貫通孔3d内に挿入されたガイドピン40に沿って押しネジ3が案内されるので、脛骨Xおよび骨プレート10に対する押しネジ3の位置および向きを安定させることができる。
このようなスリット2aを有するフック部材2によれば、ガイドピン40を脛骨Xに挿入した後に、スリット2aを介してガイドピン40を支持部5内に挿入することで、フック部材2を脛骨Xおよび骨プレート10に対して簡単に配置することができる。
プラグ7は、図10に示されるように、骨プレート10のネジ孔10aに締結可能な雄ネジからなる接続部7aと、接続部7aの一端側に設けられ頭部3bを受け入れる受部7bとを備えている。受部7bは、接続部7aとは反対側に、頭部3bの略球状の押圧面3cと相補的な凹状の略球面からなり押圧面3cを支持する受け面7cを有している。
受け面7cの立体角は4ステラジアン以上であることが好ましく、2πステラジアン以上であることがより好ましい。このようにすることで、頭部3bの押圧面3cを受け面7cによって安定的に支持することができ、圧迫力の向きの調整に際して受け面7c内で頭部3bを回転させたときに頭部3bが受け面7c内から外れてしまうことを防止することができる。
受け面7cの形状は、必ずしも凹球面に限定されるものではなく、頭部3bの押圧面3cに外接する他の形状、例えば多面体形状であってもよい。
このようにすることで、ネジ孔10aおよび貫通孔7d,3dを貫通するガイドピン40によって、骨プレート10、プラグ7および押しネジ3の脛骨Xに対する位置をより安定させることができる。
この場合、骨プレート10には、ネジ孔5aの中心軸Aに交差し突起部6のオフセット方向とは反対方向のモーメントが作用する。このモーメントによって、脛骨Xに対して骨プレート10を該骨プレート10の幅方向にも移動させて骨プレート10の位置調整を行うことができる。
また、本実施形態においては、骨プレート10を押圧して圧迫力を発生させるための加圧部材として、押しネジ3を使用することとしたが、これに代えて、他の加圧部材を使用してもよい。例えば、図12に示されるように、加圧部材31が、雄ネジ3aに代えて、滑らかな側面を有する軸部31aを備えていてもよい。この場合、支持部51は、ネジ孔5aに代えて、滑らかな内面を有し加圧部材の軸部31aが長手方向に移動可能に嵌合するガイド穴51aを有していてもよい。軸部31aは、術者の所定の運動を軸部31aの長手方向の運動に変換する器具を使用して駆動されてもよい。
Fo=Fi×α (α≧1)
すなわち、器具50は、グリップ50aに与えられた力Fiを増幅して加圧部材31に伝達するように、構成されていることが好ましい。
グリップ50aが意図せずに反対方向に戻ることがないように、グリップ50aの戻りを防止するための機構が設けられていてもよい。このようにすることで、安定的に圧迫力を脛骨Xおよび骨プレート10に加え続けることができる。
2 フック部材
2a スリット
3 押しネジ(加圧部材)
3a 軸部
3b 頭部
3c 押圧面
3d 貫通孔
4 湾曲部
5 支持部
5a ネジ孔
6 突起部
6a 突起
6b 尖端
7 プラグ
7a 接続部
7b 受部
7c 受け面
7d 貫通孔
10 骨プレート(骨接合材)
10a ネジ孔
20 スクリュ
30 ドリルスリーブ
40 ガイドピン
A ネジ孔の中心軸(軸線)
X 脛骨
X1 高位側部分
X2 低位側部分
Y 骨片の切除部位
Y1,Y2 骨切り面
Claims (10)
- 一端に凸状の略球面からなる押圧面を有する略柱状の加圧部材と、
骨の側面に係合する鉤状に形成され、一端に、前記押圧面を他端側に向けて前記加圧部材を支持する支持部を有し、前記他端に、前記支持部側へ向かって突出し前記骨の側面に食い込む突起部を有するフック部材とを備え、
前記支持部が、前記加圧部材を前記突起部側に向かって長手方向に移動可能に支持する骨手術用圧迫器具。 - 前記加圧部材が、雄ネジと、該雄ネジの一端に設けられ前記押圧面を有する頭部とを有し、
前記支持部は、前記雄ネジが締結されるネジ孔を有する請求項1に記載の骨手術用圧迫器具。 - 前記突起部は、前記加圧部材が移動する軸線の延長線上に位置する請求項1または請求項2に記載の骨手術用圧迫器具。
- 前記突起部は、前記加圧部材が移動する軸線の延長線から該延長線に交差する方向にオフセットした位置に位置する請求項1または請求項2に記載の骨手術用圧迫器具。
- 前記加圧部材が移動する軸線の延長線と前記フック部材の中間部との間の距離が、15mm以上35mm以下である請求項1から請求項4のいずれかに記載の骨手術用圧迫器具。
- 前記突起部が、尖端を有する錐状の突起を1つ以上有する請求項1から請求項5のいずれかに記載の骨手術用圧迫器具。
- 前記フック部材が、前記ネジ孔の内側と前記支持部の外側とを該ネジ孔の径方向に連通するとともに前記ネジ孔の中心軸に沿う方向に形成され、前記ネジ孔内に前記径方向にガイドピンを挿入可能なスリットを有する請求項2に記載の骨手術用圧迫器具。
- 前記押圧面を支持する凹状の受け面を有する受部と、該受部を前記骨の側面に固定される骨接合材に接続可能な接続部とを有するプラグを備える請求項1から請求項7のいずれかに記載の骨手術用圧迫器具。
- 前記プラグが、前記受け面の略中央に開口しガイドピンが貫通する貫通孔を有する請求項8に記載の骨手術用圧迫器具。
- 前記受部の前記受け面の立体角が、4ステラジアン以上である請求項8または請求項9に記載の骨手術用圧迫器具。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17834142.6A EP3488804A4 (en) | 2016-07-25 | 2017-07-20 | PRESSING INSTRUMENT FOR USE IN BONE SURGERY |
JP2018529821A JP6936799B2 (ja) | 2016-07-25 | 2017-07-20 | 骨手術用圧迫器具 |
SG11201900308PA SG11201900308PA (en) | 2016-07-25 | 2017-07-20 | Pressing tool for bone surgery |
KR1020197001480A KR102263943B1 (ko) | 2016-07-25 | 2017-07-20 | 뼈 수술용 압박 기구 |
CN201780045650.XA CN109475376B (zh) | 2016-07-25 | 2017-07-20 | 骨手术用压迫器具 |
US16/254,669 US11076899B2 (en) | 2016-07-25 | 2019-01-23 | Pressing tool for bone surgery |
PH12019500164A PH12019500164A1 (en) | 2016-07-25 | 2019-01-23 | Pressing tool for bone surgery |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662366153P | 2016-07-25 | 2016-07-25 | |
US62/366153 | 2016-07-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/254,669 Continuation US11076899B2 (en) | 2016-07-25 | 2019-01-23 | Pressing tool for bone surgery |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018021134A1 true WO2018021134A1 (ja) | 2018-02-01 |
Family
ID=61016190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/026224 WO2018021134A1 (ja) | 2016-07-25 | 2017-07-20 | 骨手術用圧迫器具 |
Country Status (8)
Country | Link |
---|---|
US (1) | US11076899B2 (ja) |
EP (1) | EP3488804A4 (ja) |
JP (1) | JP6936799B2 (ja) |
KR (1) | KR102263943B1 (ja) |
CN (1) | CN109475376B (ja) |
PH (1) | PH12019500164A1 (ja) |
SG (1) | SG11201900308PA (ja) |
WO (1) | WO2018021134A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113453634A (zh) * | 2019-02-20 | 2021-09-28 | 史密夫和内修有限公司 | 用于胫骨高位截骨的***和方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021504060A (ja) * | 2017-11-30 | 2021-02-15 | デピュイ・シンセス・プロダクツ・インコーポレイテッド | 骨リモデリング適応性を有する骨折固定クランプ |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6579296B1 (en) * | 1998-03-13 | 2003-06-17 | Theodore I. Macey | Method and apparatus for clamping |
JP2004527339A (ja) * | 2001-05-29 | 2004-09-09 | ジンテーズ アクチエンゲゼルシャフト クール | 骨整列レバー |
US20090216242A1 (en) * | 2008-01-22 | 2009-08-27 | Stryker Trauma Gmbh | Kirschner wire clamp |
JP4493618B2 (ja) | 2006-03-23 | 2010-06-30 | ノアスメディカル株式会社 | 骨保持器 |
US20130345762A1 (en) * | 2012-06-20 | 2013-12-26 | DePuy Synthes Products, LLC | Soft tissue bone reduction forceps |
JP2014054543A (ja) * | 2012-09-12 | 2014-03-27 | Michael Sutherland Walker Peter | 股関節置換術のための改良された方法および装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2583896A (en) * | 1949-09-06 | 1952-01-29 | Siebrandt Inc | Bone clamp |
US7951176B2 (en) | 2003-05-30 | 2011-05-31 | Synthes Usa, Llc | Bone plate |
US7776076B2 (en) | 2004-05-11 | 2010-08-17 | Synthes Usa, Llc | Bone plate |
CN101103936A (zh) * | 2006-07-12 | 2008-01-16 | 张长青 | 一种用于骨骼固定板的夹持器 |
BRPI0914752A2 (pt) | 2008-07-29 | 2015-10-20 | Synthes Gmbh | fórceps ósseo para segurar placas e método de uso |
KR101711003B1 (ko) | 2009-11-27 | 2017-02-28 | 신세스 게엠바하 | 원위 요골 골절용 플레이팅 구조 |
AU2013228016A1 (en) | 2012-09-12 | 2014-03-27 | Peter Michael Sutherland Walker | Improved method and apparatus for hip replacements |
CN203970526U (zh) * | 2013-12-20 | 2014-12-03 | 山东省立医院 | 一种可调节定位点的骨科用*** |
CN103735306B (zh) * | 2014-01-04 | 2016-08-31 | 黄洪欣 | 一种骨科用架式加压多用导向器 |
US20150313640A1 (en) * | 2014-04-30 | 2015-11-05 | Andres Eduardo O'DALY | Surgical instrument with movable guide and sleeve |
US10299806B2 (en) * | 2016-03-21 | 2019-05-28 | Alexander D. Kim | Bone clamp |
-
2017
- 2017-07-20 EP EP17834142.6A patent/EP3488804A4/en active Pending
- 2017-07-20 WO PCT/JP2017/026224 patent/WO2018021134A1/ja unknown
- 2017-07-20 SG SG11201900308PA patent/SG11201900308PA/en unknown
- 2017-07-20 JP JP2018529821A patent/JP6936799B2/ja active Active
- 2017-07-20 KR KR1020197001480A patent/KR102263943B1/ko active IP Right Grant
- 2017-07-20 CN CN201780045650.XA patent/CN109475376B/zh active Active
-
2019
- 2019-01-23 US US16/254,669 patent/US11076899B2/en active Active
- 2019-01-23 PH PH12019500164A patent/PH12019500164A1/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6579296B1 (en) * | 1998-03-13 | 2003-06-17 | Theodore I. Macey | Method and apparatus for clamping |
JP2004527339A (ja) * | 2001-05-29 | 2004-09-09 | ジンテーズ アクチエンゲゼルシャフト クール | 骨整列レバー |
JP4493618B2 (ja) | 2006-03-23 | 2010-06-30 | ノアスメディカル株式会社 | 骨保持器 |
US20090216242A1 (en) * | 2008-01-22 | 2009-08-27 | Stryker Trauma Gmbh | Kirschner wire clamp |
US20130345762A1 (en) * | 2012-06-20 | 2013-12-26 | DePuy Synthes Products, LLC | Soft tissue bone reduction forceps |
JP2014054543A (ja) * | 2012-09-12 | 2014-03-27 | Michael Sutherland Walker Peter | 股関節置換術のための改良された方法および装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3488804A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113453634A (zh) * | 2019-02-20 | 2021-09-28 | 史密夫和内修有限公司 | 用于胫骨高位截骨的***和方法 |
Also Published As
Publication number | Publication date |
---|---|
EP3488804A1 (en) | 2019-05-29 |
PH12019500164A1 (en) | 2019-10-28 |
CN109475376B (zh) | 2022-03-22 |
KR102263943B1 (ko) | 2021-06-11 |
EP3488804A4 (en) | 2020-04-08 |
CN109475376A (zh) | 2019-03-15 |
US20190175235A1 (en) | 2019-06-13 |
KR20190020051A (ko) | 2019-02-27 |
JPWO2018021134A1 (ja) | 2019-05-09 |
US11076899B2 (en) | 2021-08-03 |
SG11201900308PA (en) | 2019-02-27 |
JP6936799B2 (ja) | 2021-09-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11844533B2 (en) | Pivotable bone cutting guide useful for bone realignment and compression techniques | |
US6827722B1 (en) | Method and apparatus for use of a guide wire capturing surgical instrument | |
US7645282B2 (en) | Method and device for cutting surgical wire or cable | |
EP1987784B1 (en) | Device for preparing a non-rotational-symmetric recess in a bone | |
JP2017515591A (ja) | 仙骨固定システム | |
JP2010000335A (ja) | 超音波処置具 | |
JP2008541970A (ja) | 支持体に固定される装置、同装置に用いる組立部品および装置を支持体に固定する方法 | |
JPS5820628B2 (ja) | 骨の破片を接合する装置 | |
WO2018021134A1 (ja) | 骨手術用圧迫器具 | |
JP2017531497A (ja) | 髄内骨固定のためのシステムおよび方法 | |
JP2012528677A (ja) | 髄内固定具アセンブリ及び関連方法 | |
AU759901B2 (en) | Repositioning device for bone fragments | |
TWI705792B (zh) | 骨科手術用器具 | |
US6921404B2 (en) | Universal device and method for supporting bones and surgery tools in orthopaedic surgery | |
CN106236228B (zh) | 加压骨板***及其加压装置 | |
US20210220017A1 (en) | System comprising a medical apparatus and a medical device, medical apparatus and surgical method | |
US20210393307A1 (en) | Compression/reduction drivers for performing surgical methods | |
JP2010000104A (ja) | 髄内釘及び髄内釘本体 | |
CN108814675B (zh) | 一种髌骨微骨折手术装置 | |
CN109788961B (zh) | 包括破碎工具的手术器械 | |
KR102345219B1 (ko) | 구부려 사용 가능한 의료용 공구 | |
KR102210692B1 (ko) | 의료 골접합 플레이트용 컷팅 도구 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17834142 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2018529821 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20197001480 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2017834142 Country of ref document: EP Effective date: 20190225 |