JPH0866410A - Separable screw - Google Patents
Separable screwInfo
- Publication number
- JPH0866410A JPH0866410A JP6239747A JP23974794A JPH0866410A JP H0866410 A JPH0866410 A JP H0866410A JP 6239747 A JP6239747 A JP 6239747A JP 23974794 A JP23974794 A JP 23974794A JP H0866410 A JPH0866410 A JP H0866410A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- ligament
- present
- fixing
- tip
- 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.)
- Pending
Links
- 210000003041 ligament Anatomy 0.000 claims abstract description 23
- 210000000988 bone and bone Anatomy 0.000 abstract description 8
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 239000012634 fragment Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000003127 knee Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 210000000426 patellar ligament Anatomy 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
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/686—Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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
- 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 or setting implements
- 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
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
- A61B17/8635—Tips of screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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
- A61B17/8645—Headless screws, e.g. ligament interference screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00004—(bio)absorbable, (bio)resorbable or resorptive
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
【０００１】［産業上の利用分野］本発明は、医療分野
の主として、整形外科領域で再建靭帯の固定用に用いる
スクリューに関するものである。特に、膝靭帯再建を、
骨片付き膝蓋腱を用いて行なうときに使用する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a screw used for fixing a reconstructed ligament in the orthopedic region, mainly in the medical field. In particular, knee ligament reconstruction,
Used when using a patellar tendon with bone fragments.
【０００２】［従来の技術］従来のスクリュー（例えば
黒坂スクリュー）は、先端が、円錐状でありかつ、ネジ
山があり、スクリューを入れすぎると移植された靭帯か
動くとき、スクリューの先端やねじ山で切れる可能性が
あった。[Prior Art] A conventional screw (for example, a Kurosaka screw) has a conical tip and has a thread, and when the implanted ligament moves when the screw is inserted too much, the tip or the screw of the screw is moved. There was a possibility of cutting in the mountains.
【０００３】［本発明が解決しようとする課題］スクリ
ューの内部２が、靭帯の固定後外せることで、移植され
た靭帯の切れる可能性を減らすことである。[Problems to be solved by the present invention] The inside 2 of the screw is to be removed after the ligament is fixed, thereby reducing the possibility of cutting the transplanted ligament.
【０００４】［課題を解決するための手段］スクリュー
は、内部２及び、外部３から構成されており、靭帯４の
固定後、スクリューの内部２が外せることで、従来のよ
うな形状に比べ、靭帯が切れにくくする。[Means for Solving the Problems] The screw is composed of an inner part 2 and an outer part 3. By fixing the ligament 4 and removing the inner part 2 of the screw, the screw has a shape different from the conventional one. Makes ligaments difficult to cut.
【０００５】［作用］このスクリューを用いることによ
り、移植された靭帯が動いても、スクリューの内部２が
外せるので靭帯が切れる可能性が減る。[Operation] By using this screw, even if the transplanted ligament moves, the inside 2 of the screw can be removed, so that the possibility of the ligament being cut is reduced.
【０００６】［実施例］内部２は外部３への挿入部５を
有しており挿入することで一体となるスクリューであ
る。挿入部５は、図１においては、断面が六角形をして
おり、内部２の外部３に挿入される部分の断面も六角形
なら外部３をドライバーで挿入するとき、２者は、一体
となって挿入される。内部２のテーパー部分１によりス
クリューは骨孔６への侵入を開始するが、ねじ山部７
で、靭帯４を固定した後、内部２をスクリューの挿入方
向と逆方向に外す。外部３はねじ山部７を持っている
が、先端８は、靭帯４へのストレスを減らすため、鈍な
構造になってもよい。内部２にはガイドワイヤ９が通る
穴１０があり、ガイドワイヤ９下に、スクリューを通す
ことでスクリューの方向性を安定させる。外部３の後端
１１は、鈍な構造になっていても良くこのとき、この部
が、骨孔６より皮下に出ても、神経を刺激しにくく、痛
みを出しにくい。内部２および外部３の外面のねじ山
は、連続性がなくても良く、大きさが違っても良い。テ
ーパー部分１は、図３のごとく、ねじ山が切られていな
くても良い。図４のごとく、内部２と外部３の挿入部５
の断面１２は、円でも良いし、ねじ山がかみ合う形でも
よく、形状は問わない。図５のごとく、ガイドワイヤ９
の先端 １３が穴１０の直径より大きければ、ガイドワ
イヤ９を手前に引き抜くことで、内部２を抜ける。他の
抜き方として、図６のごとく、内部２にねじ山１４をき
っておいて器具１５で抜く方法や図７のごとく、引っ掛
かり１６を作っておいて抜く方法がある。内部２を抜い
た後、外部３の空間を埋めるために、図８のように、外
部３にねじ山１７を作っておき、ブロッカー２１をねじ
込んでも良いし、他の方法で空間を埋めても良い。図９
から図１１に於て使用例の概略を示す。骨孔６内に、靭
帯４を移植し、靭帯４の骨片１９をガイドワイヤ９下に
挿入した本スクリューでとめる。ガイドワイヤ９の先端
１３が、穴１０より大きいとき、ガイドワイヤ９を挿入
方向と逆に引き抜くことにより、内部２が抜ける。これ
により靭帯４が動いても、従来に比べスクリュー先端で
靭帯４を傷付ける可能性が減る。図１１の様に、ブロッ
カー１８を挿入すれば、外部３がつくる死腔を減らすこ
とができる。[Embodiment] The inner portion 2 is a screw which has an insertion portion 5 into the outer portion 3 and is integrated by being inserted. In FIG. 1, the insertion part 5 has a hexagonal cross section. If the cross section of the part to be inserted into the outer part 3 of the inner part 2 is also hexagonal, when the outer part 3 is inserted with a screwdriver, the two parts are integrated. Is inserted. The screw begins to enter the bone hole 6 due to the tapered portion 1 of the inner portion 2, but the screw thread portion 7
Then, after fixing the ligament 4, the inside 2 is removed in the direction opposite to the screw insertion direction. The exterior 3 has threads 7, but the tip 8 may have a blunt structure to reduce stress on the ligament 4. The inside 2 has a hole 10 through which the guide wire 9 passes, and by passing the screw under the guide wire 9, the directionality of the screw is stabilized. The rear end 11 of the outer part 3 may have a blunt structure. At this time, even if this part goes out subcutaneously from the bone hole 6, it is difficult to stimulate nerves and cause pain. The threads on the outer surface of the inner 2 and outer 3 may not be continuous and may be of different sizes. The tapered portion 1 may not be threaded as shown in FIG. As shown in FIG. 4, the insertion portion 5 of the inside 2 and the outside 3
The cross section 12 may be circular or may have a shape in which threads are engaged with each other, and the shape is not limited. As shown in FIG. 5, the guide wire 9
If the tip 13 of the above is larger than the diameter of the hole 10, the guide wire 9 is pulled out toward the front to exit the inside 2. As another method of pulling out, as shown in FIG. 6, there are a method of cutting a screw thread 14 in the inside 2 and pulling it out with an instrument 15, and a method of making a hook 16 and pulling it out as shown in FIG. 7. In order to fill the space of the exterior 3 after removing the interior 2, as shown in FIG. 8, a thread 17 may be formed in the exterior 3 and the blocker 21 may be screwed in, or the space may be filled by another method. good. Figure 9
11 to 11 show the outline of the usage example. The ligament 4 is implanted in the bone hole 6, and the bone fragment 19 of the ligament 4 is fixed by the main screw inserted under the guide wire 9. When the tip 13 of the guide wire 9 is larger than the hole 10, the inner wire 2 is pulled out by pulling out the guide wire 9 in the opposite direction to the insertion direction. As a result, even if the ligament 4 moves, the possibility of damaging the ligament 4 at the screw tip is reduced as compared with the conventional case. By inserting the blocker 18 as shown in FIG. 11, the dead space created by the outside 3 can be reduced.
【０００７】［発明の効果］本スクリューを用いること
により、スクリュー先端での、再建靭帯の断裂の可能性
を減らせる。[Advantages of the Invention] By using the present screw, the possibility of rupture of the reconstructed ligament at the tip of the screw can be reduced.
【図１】本発明の斜視図FIG. 1 is a perspective view of the present invention.
【図２】本発明の断面図FIG. 2 is a sectional view of the present invention.
【図３】本発明の斜視図FIG. 3 is a perspective view of the present invention.
【図４】本発明の底面図FIG. 4 is a bottom view of the present invention.
【図５】本発明の断面図FIG. 5 is a sectional view of the present invention.
【図６】本発明の断面図FIG. 6 is a sectional view of the present invention.
【図７】本発明の断面図FIG. 7 is a sectional view of the present invention.
【図８】本発明の断面図FIG. 8 is a sectional view of the present invention.
【図９】本発明の使用摸式図FIG. 9 is a schematic view of a working model of the present invention.
【図１０】本発明の使用摸式図FIG. 10 is a schematic view of a working model of the present invention.
【図１１】本発明の使用摸式図FIG. 11 is a schematic view of a working model of the present invention.
１はテーパー部分、２は内部、３は外部、４は靭帯、５
は挿入部、６は骨孔、７はねじ山部、８は先端、９はガ
イドワイヤ、１０は穴、１１は後端、１２は断面、１３
は先端、１４はねじ山、１５は器具、１６は引っ掛か
り、１７はねじ山、１８はブロッカー、１９は骨片1 is a tapered portion, 2 is an internal portion, 3 is an external portion, 4 is a ligament, 5
Is an insertion portion, 6 is a bone hole, 7 is a threaded portion, 8 is a tip, 9 is a guide wire, 10 is a hole, 11 is a rear end, 12 is a cross section, 13
Is a tip, 14 is a screw thread, 15 is an instrument, 16 is a hook, 17 is a screw thread, 18 is a blocker, 19 is a bone fragment
Claims (1)
クリューのテーパー部分１を持つ内部２と靭帯の固定部
分を持つ外部３からなる、外部３に内部２が挿入式にな
ったスクリューで、一体となって挿入された後、移植さ
れた靭帯４を傷付けないように、内部２をスクリューの
挿入方向と逆方向に外すことができるもの。テーパー部
分１は必ずしもねじ山が切られていなくても良い。1. A screw for fixing a reconstructed ligament, which comprises an inner portion 2 having a tapered portion 1 of the screw and an outer portion 3 having a fixed portion of the ligament, wherein the inner portion 2 is insertable into the outer portion 3. After being inserted as a unit, the inside 2 can be removed in the direction opposite to the screw inserting direction so as not to damage the transplanted ligament 4. The tapered portion 1 does not necessarily have to be threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6239747A JPH0866410A (en) | 1994-08-26 | 1994-08-26 | Separable screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6239747A JPH0866410A (en) | 1994-08-26 | 1994-08-26 | Separable screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0866410A true JPH0866410A (en) | 1996-03-12 |
Family
ID=17049334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6239747A Pending JPH0866410A (en) | 1994-08-26 | 1994-08-26 | Separable screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0866410A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009529368A (en) * | 2006-03-09 | 2009-08-20 | タイコ ヘルスケア グループ リミテッド パートナーシップ | Suture fixing system with cannula |
| JP2011520512A (en) * | 2008-05-14 | 2011-07-21 | スミス アンド ネフュー インコーポレーテッド | Joint affinity biceps tendon fixation treatment |
| US8226714B2 (en) | 2006-09-29 | 2012-07-24 | Depuy Mitek, Inc. | Femoral fixation |
| US8403957B2 (en) | 2006-03-09 | 2013-03-26 | Covidien Lp | Cannulated suture anchor system |
| CN105078526A (en) * | 2015-09-21 | 2015-11-25 | 中南大学湘雅医院 | Device for repairing ligament or tendon defect |
| US9259307B2 (en) | 2008-12-09 | 2016-02-16 | Smith & Nephew, Inc. | Tissue repair assembly |
| US9408690B2 (en) | 2008-12-09 | 2016-08-09 | Smith & Nephew, Inc. | Tissue repair assembly |
| CN111820968A (en) * | 2020-07-18 | 2020-10-27 | 北京中安泰华科技有限公司 | An expansion pin |
-
1994
- 1994-08-26 JP JP6239747A patent/JPH0866410A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009529368A (en) * | 2006-03-09 | 2009-08-20 | タイコ ヘルスケア グループ リミテッド パートナーシップ | Suture fixing system with cannula |
| JP4922316B2 (en) * | 2006-03-09 | 2012-04-25 | タイコ ヘルスケア グループ リミテッド パートナーシップ | Suture fixing system with cannula |
| US8403957B2 (en) | 2006-03-09 | 2013-03-26 | Covidien Lp | Cannulated suture anchor system |
| US8226714B2 (en) | 2006-09-29 | 2012-07-24 | Depuy Mitek, Inc. | Femoral fixation |
| US9265602B2 (en) | 2006-09-29 | 2016-02-23 | Depuy Mitek, Llc | Femoral fixation |
| JP2011520512A (en) * | 2008-05-14 | 2011-07-21 | スミス アンド ネフュー インコーポレーテッド | Joint affinity biceps tendon fixation treatment |
| US9241783B2 (en) | 2008-05-14 | 2016-01-26 | Smith & Nephew, Inc. | Arthroscopic biceps tenodesis repair |
| US9259307B2 (en) | 2008-12-09 | 2016-02-16 | Smith & Nephew, Inc. | Tissue repair assembly |
| US9408690B2 (en) | 2008-12-09 | 2016-08-09 | Smith & Nephew, Inc. | Tissue repair assembly |
| CN105078526A (en) * | 2015-09-21 | 2015-11-25 | 中南大学湘雅医院 | Device for repairing ligament or tendon defect |
| CN111820968A (en) * | 2020-07-18 | 2020-10-27 | 北京中安泰华科技有限公司 | An expansion pin |
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