JPH03158150A - Inplant for thighbone fracture treatment - Google Patents
Inplant for thighbone fracture treatmentInfo
- Publication number
- JPH03158150A JPH03158150A JP1296616A JP29661689A JPH03158150A JP H03158150 A JPH03158150 A JP H03158150A JP 1296616 A JP1296616 A JP 1296616A JP 29661689 A JP29661689 A JP 29661689A JP H03158150 A JPH03158150 A JP H03158150A
- Authority
- JP
- Japan
- Prior art keywords
- bayonet
- insertion tube
- plate
- screw
- femoral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 206010017076 Fracture Diseases 0.000 title claims description 4
- 210000001694 thigh bone Anatomy 0.000 title abstract 6
- 208000010392 Bone Fractures Diseases 0.000 title description 2
- 238000003780 insertion Methods 0.000 claims abstract description 52
- 230000037431 insertion Effects 0.000 claims abstract description 52
- 210000000988 bone and bone Anatomy 0.000 claims description 22
- 239000007943 implant Substances 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 17
- 238000001356 surgical procedure Methods 0.000 claims description 9
- 208000008924 Femoral Fractures Diseases 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 210000002436 femur neck Anatomy 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 210000000689 upper leg Anatomy 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 46
- 210000003275 diaphysis Anatomy 0.000 description 8
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 206010016454 Femur fracture Diseases 0.000 description 2
- 206010020100 Hip fracture Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000020089 femoral neck fracture Diseases 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
- A61B17/74—Devices for the head or neck or trochanter of the femur
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
- A61B17/746—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to a plate opposite the femoral head
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00477—Coupling
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)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、大腿骨骨折治療のためのインプラントに関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an implant for treating femoral fractures.
第７図に示すように、プレート５１は、骨頭部固定スク
リュー挿入穴５１ａを有し、圧迫ネジ挿入穴５１ｂを有
し、前幹部固定スクリュー配設穴５１ｃを配設する。As shown in FIG. 7, the plate 51 has a femoral head fixation screw insertion hole 51a, a compression screw insertion hole 51b, and an anterior trunk fixation screw installation hole 51c.
骨頭部固定スクリュー５２は手術の際の前記スクリュー
案内穴５２ａを有し、先端部に骨頭を固定せしめるため
のネジ部５２ｂを配設し、後端部には圧迫ネジ５４と係
合せしめる女ネジ部５２ｃを配設する。The femoral head fixing screw 52 has the screw guide hole 52a for use in surgery, has a threaded portion 52b at its distal end for fixing the femoral head, and has a female thread at its rear end that engages with the compression screw 54. A section 52c is provided.
前記インプラントは、先ず大腿骨転子部から骨頭にかけ
て穴明け、タッピングを行い、前記固定スクリュー５２
を挿入し、骨頭部にネジ固定する。The implant is prepared by first drilling and tapping a hole from the femoral trochanter to the femoral head, and then attaching the fixing screw 52.
Insert and fix with screws to the femoral head.
次に５プレート５１を、チューブ５１ｄを挿入せしめな
がら大腿骨骨幹部に沿わせ前幹部固定スクリューＳ５に
て固定する・
次に、圧迫ネジ５４を前記プレート５１の圧迫ネジ挿入
穴５１ｂに入れ、前記固定スクリュー５２の女ネジ部６
２ｏにネジ固定せしめ、締め付けることにより、骨頭部
を大腿骨骨幹部に整復、固定せしめる。Next, insert the tube 51d and fix the plate 51 along the femoral shaft with the anterior trunk fixing screw S5.Next, insert the compression screw 54 into the compression screw insertion hole 51b of the plate 51, Female threaded portion 6 of fixing screw 52
By fixing screws to 2o and tightening, the femoral head is reduced and fixed to the femoral shaft.
〔発明が解決しようとする問題点及び目的〕かかる従来
の構成では、プレート５１はチューブ５１ｄと一体を成
すため嵩が大きくなることで手術の際の大腿部の切開部
を大きく取らざるを得す、患者にかける負担は大きくな
る。又、プレート５１はチューブ部分連合めた厚み寸法
をカバーする厚みの材料からの成形加工をせざるを得ず
、しかもチューブ長さ５１ｅは患者により必要サイズが
異なるため、プレート５１の種類は多種用、意すること
が必要となり、結果的にコスト高、且つ手術現場に多数
のプレートを用意せざるを得ないことのわずられしさを
掛けることになる。[Problems and Objectives to be Solved by the Invention] In this conventional configuration, the plate 51 is integrated with the tube 51d, which increases its bulk, which necessitates a large incision in the thigh during surgery. This increases the burden on patients. In addition, the plate 51 must be molded from a material with a thickness that covers the combined thickness of the tube parts, and the required tube length 51e differs depending on the patient, so the plate 51 is available in many different types. This results in high costs and the burden of having to prepare a large number of plates at the surgical site.
本発明は、このような問題点を解決するもので、その目
的とするところは、シンプルで扱い易く安価な大腿骨骨
折治療のためのインプラントを提供せんとするものであ
る。The present invention solves these problems and aims to provide a simple, easy-to-handle, and inexpensive implant for treating femur fractures.
本発明の大腿骨骨折治療のためのインプラントは、（１
）大腿骨頸部及び転子部の骨折治療のため、大腿骨骨幹
部に沿わせ固定せしめるプレートと、大腿骨骨頭部に挿
入し、骨頭部を大腿骨骨幹部に整復、固定せしめる前記
プレー１−に配設せるスクリューから成る大腿骨骨折治
療のためのインプラントに於いて、該インプラントはバ
ヨネッ１−を配設せるプレート及び骨頸部挿入チューブ
を保持配設せる骨頭部固定スクリューの２体構造を成す
。The implant for femoral fracture treatment of the present invention includes (1
) For the treatment of fractures of the femoral neck and trochanteric region, the plate is fixed along the femoral shaft, and the plate 1 is inserted into the femoral head to reduce and fix the femoral head to the femoral shaft. - In an implant for treating femoral fractures, the implant has a two-piece structure: a plate on which the bayonet 1 is placed, and a femoral head fixation screw on which the bone neck insertion tube is held and placed. to accomplish.
プレートは骨頸部挿入チューブ配設穴を有し、プレート
裏側にはバヨネット配設穴を有し、バヨネットを配設す
る。該バヨネットは管類部挿入チューブの外径に接する
位置に引掛はツバを構成し、該ツバの外径は前記バヨネ
ットの回転角４５°〜１８０°の範囲で前記管類部挿入
チューブの外径との無接触部を構成するようカットせし
める。前記バヨネットは度決め突起を配設し、プレート
は裏面の前記度決め突起に対応する位置に度決めサライ
を構成せしめ、前記バヨネットの回転角を規制せしめる
。The plate has a bone neck insertion tube installation hole, and a bayonet installation hole on the back side of the plate, in which a bayonet is installed. The bayonet has a collar at a position where it contacts the outer diameter of the tubing insertion tube, and the outer diameter of the collar is the same as the outer diameter of the tubing insertion tube within the rotation angle of 45° to 180° of the bayonet. It is cut to form a non-contact part. The bayonet is provided with a degree-determining protrusion, and the plate has a degree-determining plate formed on the back surface at a position corresponding to the degree-determining protrusion, thereby regulating the rotation angle of the bayonet.
管類部挿入チューブは骨頭部固定スクリュー配設穴を有
し、該穴は前記固定スクリューを所定位置で保持せしめ
るための穴径差を有する段部を構成し、前記管類部挿入
チューブの外径部は前記プレートに配設せるバヨネット
の引掛はツバの接する位置に引掛は溝を構成し、前記挿
入チューブの上部端末には前記バヨネットの上部に配設
せる位置決め固定突起に係合せしめる回転止め固定溝を
構成する。骨頭部固定スクリューは手術の際の前記スク
リュー挿入位置案内のための案内穴を有し。The tubing section insertion tube has a femoral head fixation screw installation hole, and the hole constitutes a stepped portion having a hole diameter difference for holding the fixing screw in a predetermined position. The diameter portion of the bayonet hook is arranged on the plate, and the hook forms a groove at the position where the collar contacts, and the upper end of the insertion tube has a rotation stopper that engages with the positioning and fixing protrusion arranged on the upper part of the bayonet. Configure a fixing groove. The femoral head fixation screw has a guide hole for guiding the insertion position of the screw during surgery.
先端部に骨頭を固定せしめるためのネジ部を配設し、後
部端末部には前記固定スクリューをネジ回しするための
角穴及び引張り圧をかけるための引掛は女ネジ部を配設
し、外径部には前記挿入チューブの骨頭部固定スクリュ
ー配設穴の段部に対応する位置に抜け防止のための外径
差を有する引掛は段部を構成する。前記構造により、骨
頭部固定スクリューは管類部挿入チューブに挿入した状
態で一体を成し、前記挿入チューブはプレートに挿入し
、位置決めし、バヨネットにより固定せしめられた後、
大腿骨骨幹部に沿わせ固定せしめるプレートと大腿骨骨
頭部に挿入せる骨頭部固定スクリューにより、骨頭部を
大腿骨骨幹部に整復、固定せしめる機構を成すことを特
徴とする。A threaded portion for fixing the femoral head is provided at the distal end, a square hole for screwing the fixing screw and a female threaded portion for applying tension pressure are provided at the rear end. In the radial portion, a hook having a difference in outer diameter for preventing slippage constitutes a stepped portion at a position corresponding to the stepped portion of the femoral head fixing screw installation hole of the insertion tube. With the above structure, the femoral head fixation screw is integrated into the tubular part insertion tube when inserted, and after the insertion tube is inserted into the plate, positioned, and fixed by a bayonet,
It is characterized by forming a mechanism for reducing and fixing the femoral head to the femoral diaphysis by a plate that is fixed along the femoral diaphysis and a femoral head fixing screw that is inserted into the femoral head.
（２）前記骨頭部固定スクリューは固定スクリュー本体
とキャップの２体構造を成し、固定スクリュー本体後部
端末にはキャップ固定溝を配設し、キャップは前記キャ
ップ固定溝に対応する位置に内径差を有するキャップ固
定段部を配設せしめ、キャップの前端の一部に割り溝を
配設せしめ、該割り溝によるバネ効果を利用してキャッ
プを前記固定スクリュー本体に挿入せしめ、前記固定溝
とキャップ固定段部の係合によりキャップと固定スクリ
ュー本体を固定せしめた後、前記割り溝を溶接により永
久固定せしめることを特徴とする。(2) The femoral head fixation screw has a two-piece structure consisting of a fixation screw body and a cap, and a cap fixation groove is provided at the rear end of the fixation screw body, and the cap has an inner diameter difference at a position corresponding to the cap fixation groove. A split groove is provided in a part of the front end of the cap, and a spring effect of the split groove is used to insert the cap into the fixing screw body, and the fixing groove and the cap After the cap and the fixing screw body are fixed by engagement of the fixing step, the split groove is permanently fixed by welding.
本発明の上記の構成によれば、プレートと管類部挿入チ
ューブは２体構造を成すため、シンプルで扱い易く手術
の際の大腿切開部も小さくできることで、より良い手術
結果を期待出来る。又、効率的な材料取りの効果及び加
工性の向上により安価に製造することが可能となり、加
えて前記プレート及び挿入チューブは互換性を持つため
、手術現場で用意するべき種類を大幅に減少することに
なり、取扱いが容易になる。According to the above-described configuration of the present invention, since the plate and the tubular part insertion tube form a two-piece structure, it is simple and easy to handle, and the thigh incision during surgery can be made small, so that better surgical results can be expected. In addition, it is possible to manufacture it at a low cost due to efficient material collection and improved processability, and in addition, since the plate and insertion tube are compatible, the number of types that need to be prepared at the surgical site can be significantly reduced. This makes handling easier.
以下、本発明について実施例に基づき詳細に説明する。 Hereinafter, the present invention will be described in detail based on examples.
第１図は本発明実施例の組立平面図、第２図は第１図の
断面図、第３図は第１図の一部裏面図である。１はプレ
ート、１ａは骨頸部挿入チューブ配設穴、１ｂはバヨネ
ット配設穴、１ｃは前幹部固定スクリュー配設穴、１ｄ
は度決めサライ、２は管類部挿入チューブ、２ａは骨頭
部固定スクリュー配設穴、２ｂは骨頭部固定スクリュー
保持段部、２ｃは回転止め固定溝、２ｄはバヨネット引
掛は溝、３は骨頭部固定スクリュー ３ａは案内穴、３
ｂは骨頭固定ネジ部、３Ｇは挿入チューブ引掛は段部、
３ｄはスクリュー締め付は角穴、３ｅは引掛は女ネジ部
、４はバヨネット、４ａは位置決め固定突起、４ｂは引
掛はツバ、４ｃはバヨネット回し溝、４ｄは度決め突起
である。骨頭部固定スクリュー３は管類部挿入チューブ
２の骨頭部固定スクリュー配設穴２ａに挿入せしめ、夫
々の、引掛は段部３ｃと保持段部２ｂにより互いに抜け
防止せしめられた状態で一体を成し、プレート１の骨頸
部挿入チューブ配設穴１ａに挿入せしめられ、前記管類
部挿入チューブ２の上端に配設せる回転止め固定溝２ｃ
とバヨネット４の上部に配設せる位置決め固定突起４ａ
を係合し、位置決めせしめられた状態で前記プレート１
のバヨネット配設穴１ｂに配設せるバヨネット４をバヨ
ネット回し溝４Ｃを用いて４５°〜１８０’回転せしめ
、引掛はツバ４ｂが前記挿入チューブ２の外径に配設せ
るバヨネット引掛け１１２ｄに係合せしめられることで
、プレート１と、骨頭部固定スクリュー３と一体を成す
骨頸部挿入チューブ２は組立てられ、インプラントを構
成せしめる。1 is an assembled plan view of an embodiment of the present invention, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a partial back view of FIG. 1. 1 is a plate, 1a is a bone neck insertion tube installation hole, 1b is a bayonet installation hole, 1c is an anterior trunk fixation screw installation hole, 1d
2 is the diaphragm for adjusting the tension, 2 is the tubing part insertion tube, 2a is the femoral head fixing screw installation hole, 2b is the femoral head fixing screw holding step, 2c is the rotation stopper fixing groove, 2d is the bayonet hook groove, 3 is the femoral head Part fixing screw 3a is the guide hole, 3
b is the femoral head fixation screw part, 3G is the insertion tube hook at the stepped part,
3d is a square hole for screw tightening, 3e is a female screw part for a hook, 4 is a bayonet, 4a is a positioning and fixing protrusion, 4b is a collar for a hook, 4c is a bayonet turning groove, and 4d is a degree setting protrusion. The femoral head fixing screw 3 is inserted into the femoral head fixing screw installation hole 2a of the tubing part insertion tube 2, and each hook is integrally formed with the step portion 3c and the holding step portion 2b preventing each other from coming off. and a rotation stopper fixing groove 2c inserted into the bone neck insertion tube installation hole 1a of the plate 1 and arranged at the upper end of the tubular part insertion tube 2.
and a positioning fixing protrusion 4a disposed on the top of the bayonet 4.
said plate 1 in a state where it is engaged and positioned.
The bayonet 4 installed in the bayonet installation hole 1b is rotated from 45° to 180' using the bayonet rotation groove 4C, and the hook 4b is engaged with the bayonet hook 112d installed on the outer diameter of the insertion tube 2. By being brought together, the plate 1 and the bone neck insertion tube 2, which is integral with the bone head fixation screw 3, are assembled to form an implant.
その際、バヨネット４の回転は、度決め突起４ｄと前記
プレート１の裏側に配設せる度決めサライ１ｄにより規
制せしめられる。At this time, the rotation of the bayonet 4 is regulated by a centering protrusion 4d and a centering slide 1d provided on the back side of the plate 1.
前記インプラントの使用方法を第４図にて細説する。３
０ａは大腿骨骨頭、３０ｂは大腿骨顕部３０ｃは大腿骨
転子部、３０ｄは転子骨折部。The method of using the implant will be explained in detail with reference to FIG. 3
0a is the femoral head, 30b is the femoral bone region, 30c is the femoral trochanteric region, and 30d is the trochanteric fracture region.
３０ｅは大腿骨骨幹部、３５は骨幹部固定スクリューで
ある。先ず、大腿骨の骨幹部３０ｅより骨折状態にある
転子部３０ｃと骨頭部３０．ｂを通し骨頭部３０ａに穴
を明けた後タッピングを行う。30e is a femoral diaphysis, and 35 is a diaphysis fixing screw. First, the trochanteric part 30c and the femoral head 30, which are in a fractured state, are removed from the diaphyseal shaft 30e of the femur. After making a hole in the bone head 30a through hole b, tapping is performed.
次に、前記穴にガイドピンを通し、該ピンを案内に前記
インプラントの、一体を成す骨頭部固定スクリュー３及
び骨頸部挿入チューブ２を、案内穴３ａを用いて前記骨
頭部の穴に挿入せしめながら前記スクリュー３の骨頭固
定ネジ部３ｂを、締め付は角穴３ｄに角頭ドライバーを
用いて回し、ネジ込みながら骨頭部に固定せしめる。次
にプレート１を骨頸部挿入チューブ２に挿入し、バヨネ
ット４を回転し前記プレート１と骨頸部挿入チューブ２
を固定せしめた後、プレート１を骨幹部に沿わせしめた
状態で更に前記スクリュー３を回し、骨頭部を大腿骨骨
幹部に整復する。その際、前記スクリュー３に配設せる
引掛は女ネジ部３ｅに引掛は治具をネジ込み引張り力を
加え骨頭部の位置を正しく復元し、前記プレート１に配
設せる骨幹部固定スクリュー配設穴１ｄを用いて、骨幹
部固定スクリュー３５により前記プレート１を骨幹部３
０ｅに固定せしめる。Next, a guide pin is passed through the hole, and using the pin as a guide, the femoral head fixing screw 3 and bone neck insertion tube 2 of the implant, which are integrated, are inserted into the hole of the femoral head using the guide hole 3a. Tighten the femoral head fixing screw part 3b of the screw 3 using a square head screwdriver in the square hole 3d, and fix it to the femoral head while tightening the screw. Next, insert the plate 1 into the bone neck insertion tube 2, rotate the bayonet 4, and rotate the plate 1 and the bone neck insertion tube 2.
After fixing, the screw 3 is further turned while the plate 1 is placed along the diaphysis of the femur to reduce the femoral head to the diaphysis of the femur. At that time, the hook disposed on the screw 3 is screwed into the female threaded part 3e, a jig is screwed in, a tensile force is applied to correctly restore the position of the femoral head, and the diaphyseal fixing screw is disposed on the plate 1. Using the holes 1d, the plate 1 is attached to the diaphysis 3 using the diaphysis fixing screw 35.
Fix it to 0e.
第５図は、プレート１に配設せるバヨネット４の組立拡
大断面図である。FIG. 5 is an enlarged sectional view of the bayonet 4 disposed on the plate 1.
プレート１に配設せる前頭部挿入チューブ配設穴１ａに
骨頸部挿入チューブ２が挿入せしめられ、該チューブの
外径に配設せるバヨネット引掛は溝２ｄにバヨネット４
の引掛はツバ４ｂが係合せしめられ、前記挿入チューブ
２とプレート１がバヨネット４により固定せしめられて
いる。前記引掛はツバ４ｂの反対側には、バヨネットツ
バ部が一部カットせしめられ、前記挿入チューブ２との
無接触部４ｅを構成し、バヨネット４の４５°〜１８０
’の回転により前記挿入チューブ２を脱着せしめられる
構造を成す。The bone neck insertion tube 2 is inserted into the forehead insertion tube installation hole 1a provided in the plate 1, and the bayonet hook provided on the outer diameter of the tube is inserted into the bayonet 4 in the groove 2d.
The hook is engaged with the collar 4b, and the insertion tube 2 and plate 1 are fixed by a bayonet 4. On the opposite side of the hook 4b, a part of the bayonet flange part is cut off, forming a non-contact part 4e with the insertion tube 2, and the bayonet 4 has a 45° to 180° angle.
It has a structure in which the insertion tube 2 can be attached and detached by rotation of '.
第６図は本発明の他の実施例の骨頭部固定スクリューの
断面図である。１３は骨頭部固定スクリュー ２３は固
定キャップ、１３ａは案内穴、１３ｂは骨頭固定ネジ部
、２３ｃは挿入チューブ引掛は段部、１３ｄはスクリュ
ー締め付は角穴、１３ｅは引掛は女ネジ部、２３ｆは割
り溝、２３ｇはキャップ固定段部、１３ｈはキャップ固
定溝である。骨頭部固定スクリュー１３は固定キャップ
２３との２体構造を成し、前記骨頭部固定スクリュー１
３の頭部に固定キャップ２３を挿入し、夫々の、キャッ
プ固定段部２３ｇとキャップ固定溝１３ｈを係合せしめ
固定する。その際、前記骨頭部固定スクリューの頭部外
径１３ｊとキャップ内径２３ｊの寸法差は割り溝２３ｆ
により固定キャップにバネ性を生じさせ挿入せしめる。FIG. 6 is a sectional view of a femoral head fixation screw according to another embodiment of the present invention. 13 is a screw for fixing the femoral head; 23 is a fixing cap; 13a is a guide hole; 13b is a threaded portion for fixing the femoral head; 23c is a step for hooking the insertion tube; 13d is a square hole for tightening the screw; 13e is a female thread for hooking; 23f 23g is a cap fixing step, and 13h is a cap fixing groove. The femoral head fixing screw 13 has a two-piece structure with a fixing cap 23, and the femoral head fixing screw 1
The fixing cap 23 is inserted into the head of the cap 3, and the cap fixing step 23g and the cap fixing groove 13h are engaged and fixed. At that time, the dimensional difference between the head outer diameter 13j and the cap inner diameter 23j of the femoral head fixing screw is equal to the split groove 23f.
This causes the fixed cap to have spring properties and is inserted into the fixed cap.
前記骨頭部固定スクリュー１３は、固定キャップ２３を
挿入固定せしめた後１割り溝２３ｆ部を溶接することに
より永久固定せしめる。The femoral head fixing screw 13 is permanently fixed by welding the split groove 23f after the fixing cap 23 is inserted and fixed.
大腿骨頸部及び転子部の骨折手術における、前記インプ
ラントの狙いは、シンプルな構造による簡便な操作性の
実現とインプラント各部材の互換性を持たせることによ
る取扱い性の改善、加えて大腿切開部を小さく出来得る
構造の実現により患者の負担を少なく、且つ手術時間を
短縮することが最大のポイントである。The aims of this implant in femoral neck and trochanteric fracture surgery are to realize easy operability due to its simple structure and to improve handling by making each implant component compatible, as well as to improve ease of handling through femoral incision. The most important point is to reduce the burden on the patient and shorten the surgical time by creating a structure that can be made smaller.
かかる実施例の構成によれば、プレートと骨頸部挿入チ
ューブは２体構造を成すためシンプルで扱い易く、この
ことが５手術の際の大腿切開部をより小さ（することに
つながり、又、より効果的な加工性の実現と各部材の互
換性による手術現場での取扱い易さとなり、結果として
安価で扱い易い大腿骨骨折治療のためのインプラントを
提供出来る。According to the configuration of this embodiment, since the plate and the bone neck insertion tube form a two-piece structure, it is simple and easy to handle, which leads to a smaller thigh incision during surgery, and The realization of more effective workability and the compatibility of each component makes it easier to handle at the surgical site, and as a result, it is possible to provide an inexpensive and easy-to-handle implant for treating femur fractures.
以上述べたように１本発明によれば大腿骨頸部及び転子
部の骨折手術において、安価でシンプルなインプラント
構造により、技術的にも経済的にも患者の負担を軽減し
、総合的な手術のより良い成果を得ることを可能にする
。As described above, according to the present invention, in fracture surgery of the femoral neck and trochanter, the inexpensive and simple implant structure reduces the burden on the patient both technically and economically, and provides comprehensive Allows to obtain better results of surgery.
第１図は本発明実施例の組立平面図、第２図は第１図の
断面図、第３図は第１図の一部裏面図である。
第４図は本発明のインプラントの使用方法を説明する断
面図、第５図は本発明のバヨネット部分の機能を示す組
立拡大断面図である。
第６図は本発明の他の実施例の骨頭部固定スクリューの
断面図である。
第７図は従来の実施例の断面図である。
１．５１ ・・・・・・・・・・・・・・・プレートｌ
ｃ、５１ｃ・・・・・・・・・前幹部固定スクリュー配
設穴２ ・・・・・・・・・・・・・・・・・・・・・
・・・・・・骨頸部挿入チューブ３．１３，６２・・・
・・・・・・骨頭部固定スクリュー３ａ、１３ａ、５２
ａ・・・案内穴
３ｂ、１３ｂ、５２ｂ・・・骨頭固定ネジ部３ｃ、２３
ｃ・・・・・・・・・・・・・・・挿入チューブ引掛は
段部３ｄ、１３ｄ・・・・・・・・・・・・・・・スク
リュー締め付は角穴３ｅ、１３ｅ・・・・・・・・・・
・・・・・引掛は女ネジ部４ ・・・・・・・・・・・
・・・・・・・・・・・・・・・・バヨネット２３・・
・・・・・・・・・・・・・・・・・・・・・・・・・
固定キャップ３５．５５・・・・・・・・・・・・・・
・・・・前幹部固定スクリュー５４・・・・・・・・・
・・・・・・・・・・・・・・・・・・圧迫ネジ以上
特許出原人 早野喜十部
冨ｉ口
ＦＪ４０
’Ｊｉ＆’１1 is an assembled plan view of an embodiment of the present invention, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a partial back view of FIG. 1. FIG. 4 is a cross-sectional view illustrating how to use the implant of the present invention, and FIG. 5 is an enlarged assembled cross-sectional view showing the function of the bayonet portion of the present invention. FIG. 6 is a sectional view of a femoral head fixation screw according to another embodiment of the present invention. FIG. 7 is a sectional view of a conventional embodiment. 1.51 ・・・・・・・・・・・・Plate l
c, 51c......Front trunk fixing screw installation hole 2......
...Bone neck insertion tube 3.13,62...
...Female head fixation screws 3a, 13a, 52
a...Guide holes 3b, 13b, 52b...Female head fixing screw parts 3c, 23
c・・・・・・・・・・・・Insertion tube hook is stepped part 3d, 13d・・・・・・・・・・・・Screw tightening is square hole 3e, 13e・・・・・・・・・・
・・・・・・The hook is female screw part 4 ・・・・・・・・・・・・
・・・・・・・・・・・・・・・Bayonet 23...
・・・・・・・・・・・・・・・・・・・・・・・・
Fixed cap 35.55・・・・・・・・・・・・・・・
...Front trunk fixing screw 54...
・・・・・・・・・・・・・・・・・・Patented by Kijube Hayano FJ40 'Ji&'1
Claims (2)
骨幹部に沿わせ固定せしめるプレートと、大腿骨骨頭部
に挿入し、骨頭部を大腿骨骨幹部に整復、固定せしめる
前記プレートに配設せるスクリューから成る大腿骨骨折
治療のためのインプラントに於いて、該インプラントは
バヨネットを配設せるプレート及び骨頸部挿入チューブ
を保持配設せる骨頭部固定スクリューの２体構造を成す
。 プレートは骨頸部挿入チューブ配設穴を有し、プレート
裏側にはバヨネット配設穴を有し、バヨネットを配設す
る。該バヨネットは骨頸部挿入チューブの外径に接する
位置に引掛けツバを構成し、該ツバの外径は前記バヨネ
ットの回転角４５°〜１８０°の範囲で前記骨頸部挿入
チューブの外径との無接触部を構成するようカットせし
める。前記バヨネットは度決め突起を配設し、プレート
は裏面の前記度決め突起に対応する位置に度決めサライ
を構成せしめ、前記バヨネットの回転角を規制せしめる
。 骨頸部挿入チューブは骨頭部固定スクリュー配設穴を有
し、該穴は前記固定スクリューを所定位置で保持せしめ
るための穴径差を有する段部を構成し、前記骨頸部挿入
チューブの外径部は前記プレートに配設せるバヨネット
の引掛けツバの接する位置に引掛け溝を構成し、前記挿
入チューブの上部端末には前記バヨネットの上部に配設
せる位置決め固定突起に係合せしめる回転止め固定溝を
構成する。 骨頭部固定スクリューは手術の際の前記スクリユー挿入
位置案内のための案内穴を有し、先端部に骨頭を固定せ
しめるためのネジ部を配設し、後部端末部には前記固定
スクリューをネジ回しするための角穴及び引張り圧をか
けるための引掛け女ネジ部を配設し、外径部には前記挿
入チューブの骨頭部固定スクリュー配設穴の段部に対応
する位置に、抜け防止のための外径差を有する引掛け段
部を構成する。前記構造により、骨頭部固定スクリュー
は骨頸部挿入チューブに挿入した状態で一体を成し、前
記挿入チューブはプレートに挿入し位置決めし、バヨネ
ットにより固定せしめられた後、大腿骨骨幹部に沿わせ
固定せしめるプレートと大腿骨骨頭部に挿入せる骨頭部
固定スクリューにより、骨頭部を大腿骨骨幹部に整復、
固定せしめる機構を成すことを特徴とする、大腿骨骨折
治療のためのインプラント。(1) For the treatment of fractures in the femoral neck and trochanteric region, a plate is installed along the femoral shaft and fixed, and the plate is inserted into the femoral head to reduce and fix the femoral head to the femoral shaft. In an implant for femoral fracture treatment consisting of a screw placed in a plate, the implant has a two-piece structure: a plate on which a bayonet is placed and a bone head fixation screw on which a bone neck insertion tube is held and placed. . The plate has a bone neck insertion tube installation hole, and a bayonet installation hole on the back side of the plate, in which a bayonet is installed. The bayonet has a hooking collar at a position in contact with the outer diameter of the bone neck insertion tube, and the outer diameter of the collar is equal to the outer diameter of the bone neck insertion tube within the rotation angle of 45° to 180° of the bayonet. It is cut to form a non-contact part. The bayonet is provided with a degree-determining protrusion, and the plate has a degree-determining plate formed on the back surface at a position corresponding to the degree-determining protrusion, thereby regulating the rotation angle of the bayonet. The bone neck insertion tube has a femoral head fixation screw installation hole, and the hole forms a stepped portion having a hole diameter difference for holding the fixation screw in a predetermined position. The diameter portion forms a hooking groove at a position where it contacts the hooking collar of the bayonet disposed on the plate, and the upper end of the insertion tube has a rotation stopper that engages with the positioning and fixing protrusion disposed on the upper part of the bayonet. Configure a fixing groove. The femoral head fixation screw has a guide hole for guiding the insertion position of the screw during surgery, a threaded portion for fixing the femoral head is provided at the distal end, and the fixation screw is inserted into the rear end with a screwdriver. A square hole is provided to prevent the insertion tube from slipping out, and a hook female screw part is provided to apply tension pressure. A hooking stepped portion having a difference in outer diameter is configured. With the above structure, the femoral head fixation screw is integrated into the bone neck insertion tube when inserted into the bone neck insertion tube, and the insertion tube is inserted into the plate, positioned, and fixed by a bayonet, and then placed along the femoral shaft. The femoral head is reduced to the femoral shaft using a fixation plate and a femoral head fixation screw inserted into the femoral head.
An implant for treating femoral fractures, characterized by forming a fixation mechanism.
とキャップの２体構造を成し、固定スクリュー本体後部
端末にはキャップ固定溝を配設し、キャップは前記キャ
ップ固定溝に対応する位置に内径差を有するキャップ固
定段部を配設せしめ、キャップの前端の一部に割り溝を
配設せしめ、該割り溝によるバネ効果を利用してキャッ
プを前記固定スクリュー本体に挿入せしめ、前記固定溝
とキャップ固定段部の係合によりキャップと固定スクリ
ュー本体を固定せしめた後、前記割り溝を溶接により永
久固定せしめることを特徴とする、特許請求の範囲第一
項記載の大腿骨骨折治療のためのインプラント(2) The femoral head fixation screw has a two-piece structure consisting of a fixation screw body and a cap, and a cap fixation groove is provided at the rear end of the fixation screw body, and the cap has an inner diameter difference at a position corresponding to the cap fixation groove. A split groove is provided in a part of the front end of the cap, and a spring effect of the split groove is used to insert the cap into the fixing screw body, and the fixing groove and the cap An implant for treating femoral fractures according to claim 1, characterized in that after the cap and the fixing screw body are fixed by engagement of the fixing step, the split groove is permanently fixed by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1296616A JPH03158150A (en) | 1989-11-15 | 1989-11-15 | Inplant for thighbone fracture treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1296616A JPH03158150A (en) | 1989-11-15 | 1989-11-15 | Inplant for thighbone fracture treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03158150A true JPH03158150A (en) | 1991-07-08 |
| JPH0581254B2 JPH0581254B2 (en) | 1993-11-12 |
Family
ID=17835860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1296616A Granted JPH03158150A (en) | 1989-11-15 | 1989-11-15 | Inplant for thighbone fracture treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03158150A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2841459A1 (en) * | 2002-06-28 | 2004-01-02 | Sanortho | MINIMALLY INVASIVE OSTEOSYNTHESIS DEVICE, PARTICULARLY HIP SCREWS |
| WO2004110292A3 (en) * | 2003-06-12 | 2005-03-17 | Disc O Tech Medical Tech Ltd | Plate device |
| US7951176B2 (en) | 2003-05-30 | 2011-05-31 | Synthes Usa, Llc | Bone plate |
| WO2017007382A1 (en) * | 2015-07-06 | 2017-01-12 | Swemac Innovation Ab | Device for fixation of bone fragments |
| US10335211B2 (en) | 2004-01-26 | 2019-07-02 | DePuy Synthes Products, Inc. | Highly-versatile variable-angle bone plate system |
| US10342586B2 (en) | 2003-08-26 | 2019-07-09 | DePuy Synthes Products, Inc. | Bone plate |
| US10624686B2 (en) | 2016-09-08 | 2020-04-21 | DePuy Synthes Products, Inc. | Variable angel bone plate |
| US10772665B2 (en) | 2018-03-29 | 2020-09-15 | DePuy Synthes Products, Inc. | Locking structures for affixing bone anchors to a bone plate, and related systems and methods |
| US10820930B2 (en) | 2016-09-08 | 2020-11-03 | DePuy Synthes Products, Inc. | Variable angle bone plate |
| US10905476B2 (en) | 2016-09-08 | 2021-02-02 | DePuy Synthes Products, Inc. | Variable angle bone plate |
| US10925651B2 (en) | 2018-12-21 | 2021-02-23 | DePuy Synthes Products, Inc. | Implant having locking holes with collection cavity for shavings |
| US11013541B2 (en) | 2018-04-30 | 2021-05-25 | DePuy Synthes Products, Inc. | Threaded locking structures for affixing bone anchors to a bone plate, and related systems and methods |
| US11026727B2 (en) | 2018-03-20 | 2021-06-08 | DePuy Synthes Products, Inc. | Bone plate with form-fitting variable-angle locking hole |
| US11259851B2 (en) | 2003-08-26 | 2022-03-01 | DePuy Synthes Products, Inc. | Bone plate |
| US11291484B2 (en) | 2004-01-26 | 2022-04-05 | DePuy Synthes Products, Inc. | Highly-versatile variable-angle bone plate system |
-
1989
- 1989-11-15 JP JP1296616A patent/JPH03158150A/en active Granted
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2841459A1 (en) * | 2002-06-28 | 2004-01-02 | Sanortho | MINIMALLY INVASIVE OSTEOSYNTHESIS DEVICE, PARTICULARLY HIP SCREWS |
| WO2004002343A1 (en) * | 2002-06-28 | 2004-01-08 | Sanortho | Mini-invasive osteosynthesis device, in particular for metaphyseal fractures |
| US10653466B2 (en) | 2003-05-30 | 2020-05-19 | DePuy Synthes Products, Inc. | Bone plate |
| US11419647B2 (en) | 2003-05-30 | 2022-08-23 | DePuy Synthes Products, Inc. | Bone plate |
| US7951176B2 (en) | 2003-05-30 | 2011-05-31 | Synthes Usa, Llc | Bone plate |
| US9931148B2 (en) | 2003-05-30 | 2018-04-03 | DePuy Synthes Products, Inc. | Bone plate |
| US10231768B2 (en) | 2003-05-30 | 2019-03-19 | DePuy Synthes Products, Inc. | Methods for implanting bone plates |
| WO2004110292A3 (en) * | 2003-06-12 | 2005-03-17 | Disc O Tech Medical Tech Ltd | Plate device |
| US10342586B2 (en) | 2003-08-26 | 2019-07-09 | DePuy Synthes Products, Inc. | Bone plate |
| US11259851B2 (en) | 2003-08-26 | 2022-03-01 | DePuy Synthes Products, Inc. | Bone plate |
| US10335211B2 (en) | 2004-01-26 | 2019-07-02 | DePuy Synthes Products, Inc. | Highly-versatile variable-angle bone plate system |
| US11291484B2 (en) | 2004-01-26 | 2022-04-05 | DePuy Synthes Products, Inc. | Highly-versatile variable-angle bone plate system |
| WO2017007382A1 (en) * | 2015-07-06 | 2017-01-12 | Swemac Innovation Ab | Device for fixation of bone fragments |
| US11141203B2 (en) | 2015-07-06 | 2021-10-12 | Swemac Innovation Ab | Device for fixation of bone fragments |
| US10624686B2 (en) | 2016-09-08 | 2020-04-21 | DePuy Synthes Products, Inc. | Variable angel bone plate |
| US10820930B2 (en) | 2016-09-08 | 2020-11-03 | DePuy Synthes Products, Inc. | Variable angle bone plate |
| US10905476B2 (en) | 2016-09-08 | 2021-02-02 | DePuy Synthes Products, Inc. | Variable angle bone plate |
| US11529176B2 (en) | 2016-09-08 | 2022-12-20 | DePuy Synthes Products, Inc. | Variable angle bone plate |
| US11026727B2 (en) | 2018-03-20 | 2021-06-08 | DePuy Synthes Products, Inc. | Bone plate with form-fitting variable-angle locking hole |
| US10772665B2 (en) | 2018-03-29 | 2020-09-15 | DePuy Synthes Products, Inc. | Locking structures for affixing bone anchors to a bone plate, and related systems and methods |
| US11013541B2 (en) | 2018-04-30 | 2021-05-25 | DePuy Synthes Products, Inc. | Threaded locking structures for affixing bone anchors to a bone plate, and related systems and methods |
| US10925651B2 (en) | 2018-12-21 | 2021-02-23 | DePuy Synthes Products, Inc. | Implant having locking holes with collection cavity for shavings |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0581254B2 (en) | 1993-11-12 |
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