DK174737B1 - Stift til indsætning i knogle - Google Patents
Stift til indsætning i knogle Download PDFInfo
- Publication number
- DK174737B1 DK174737B1 DK198902744A DK274489A DK174737B1 DK 174737 B1 DK174737 B1 DK 174737B1 DK 198902744 A DK198902744 A DK 198902744A DK 274489 A DK274489 A DK 274489A DK 174737 B1 DK174737 B1 DK 174737B1
- Authority
- DK
- Denmark
- Prior art keywords
- pin
- bone
- polymer
- drill
- cutting
- Prior art date
Links
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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/842—Flexible wires, bands or straps
-
- 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
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
- A61B17/8635—Tips of screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/04—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints
-
- 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
- A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface
- A61B17/848—Kirschner wires, i.e. thin, long nails
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S606/00—Surgery
- Y10S606/907—Composed of particular material or coated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S606/00—Surgery
- Y10S606/907—Composed of particular material or coated
- Y10S606/908—Bioabsorbable material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S606/00—Surgery
- Y10S606/907—Composed of particular material or coated
- Y10S606/91—Polymer
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Neurology (AREA)
- Nursing (AREA)
- Vascular Medicine (AREA)
- Materials For Medical Uses (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Description
DK 174737 B1 I
Den foreliggende opfindelse angår en benstift, som kan anvendes til at I
holde små benfragmenter sammen, og som er udført af polymermateriale, I
fortrinsvis en polymer, som er absorberbar i et animalsk legeme. Ifølge H
opfindelsen har benstiften en skære- eller boreindretning fastgjort til den ene I
5 ende af stiftens polymerdel, så stiften kan indsættes direkte i en knogle eller et H
knoglefragment.
Benstifter fremstilles normalt af metal af medicinsk kvalitet, som kan
anbringes i et animalsk legeme over længere tidsrum uden generende H
bivirkninger. De metalliske benstifter fjernes normalt fra legemet, efter knoglen I
10 er helet. Metalliske benstifter, navnlig en benstiftindretning, som kaldes en I
Kirschner-tråd, kan have en tilspidset ende, der kan anvendes som borespids H
til at bore stiften igennem knoglen. H
I DE-A-2721G75 er beskrevet en fikseringsstift til en knoglefraktur, I
hvilken stift er fremstillet med en ståldel, der frembringer en borespids, samt en 15 legeringsdel med et drænhul og dannende fikseringsstiftemnet. Den anden del
fremstillet af legeringen forbliver i knoglen, når først boredelen er fjernet, idet H
der anbringes en beskyttelsestap over den anden del for at forhindre, at der I
indføres urenheder i drænhullet. I
Brugen af formstof såsom polyethylen som benstift er blevet foreslået. H
20 Benstifter af polymermaterialer, som er absorberbare i legemet, er også blevet I
foreslået. Disse benstifter kan fremstilles af polyglukolid eller polylactid polymer I
eller copolymer eller glykolid og laktid eller af polydioxanon eller af andre I
absorberbare polymerer. En benstift fremstillet af polydioxanon som beskrevet i H
US patentskrift nr. 4 052 988 har været i handelen i nogen tid. I
25 Polydioxanonbenstiften anvendes ved at bore et hul gennem et H
knoglefragment og ind i massivt ben eller mellem eller gennem to ved siden af
* hinanden beliggende knoglefragmenter, der skal holdes sammen. Efter der er I
boret et hul af passende diameter gennem knoglen, fjernes boret, og H
polydioxanonstiften indsættes gennem hullet, og den del af stiften, der rager ud H
30 over benoverfladen, fjernes ved afskæring med en skalpel eller andet H
instrument. H
Problemet ved denne fremgangsmåde er, at benfragmenterne, når det H
første hul bores gennem knoglen, ligger på linie, mens fragmenterne, efter H
I DK 174737 B1 I boret er fjernet for indsætning af stiften, kan forrykkes i forhold til indstillingen, I hvorved der kan blive vanskelighed ved rigtig indsætning af stiften.
I Ifølge opfindelsen tilvejebringes en polymerbenstift, hvor der er fastgjort en borespids til polymerstiften. Med polymerbenstifiten ifølge opfindelsen I 5 frembringes således en simplere konstruktion end den, som kendes fra I ovennævnte tyske offentliggørelsesskrift. Opfindelsen er særlig nyttig ved procedurer, hvor en stift skal forløbe hele vejen fra den ene side af en knogle til I den modsatte side. Benstiften ifølge opfindelsen kan placeres ved brug af et hult bor. Stiftens borespids bores gennem knoglerne, der skal holdes sammen.
10 Borespidsen forløber forbi eller helt igennem knoglens distale overflade. Stiften I skubbes igennem knoglerne, og de polymere dele af stiften og borespidsen, I der rager ud forbi knogleoverfladen, fjernes. Denne procedure med benstiften I ifølge opfindelsen overvinder fuldstændig problemerne med forrykning af I indstillingen af benfragmenter, idet stiften følger lige efter borespidsen igennem I 15 benet. Opfindelsen fremgår nærmere af den følgende detaljerede beskrivelse I under henvisning til tegningen, hvorpå I fig. 1 viser to benfragmenter, som holdes sammen ved, at stiften I er skubbet igennem fragmenterne, I 20 fig. 2 viser benstiften med borespidsen påsat, og fig. 3 viser stiftens polymerdel fastgjort i en knogle.
I Fig. 1 illustrerer brugen af benstiften ifølge opfindelsen. Stiften anvendes til sammenholdning af dele af knoglen 10. Stiften 11 omfatter en polymer del 25 12, hvortil der er fastgjort en boredel 13. Boredelen har en borespids 14 og er I fastgjort til polymerdelen ved sammensmeltning, med klæbestof eller på anden I måde. * I Den foretrukne ikke-absorberbare polymer til polymerdelene af stiften er I polyethylen, og den foretrukne absorberbare polymer er polydioxanon som I 30 beskrevet i US patentskrift nr. 4 052 988.
Stiftens polymerdel er tilspidset med en spidsning på mellem 0,005-0,05 mm pr. mm-længde. Stiften 11 har generelt en længde på mellem 100-200 mm.
Stiftens polymerdel har en længde på omtrent 50-100 mm, og indretningens
DK 174737 B1 I
skæredel har en længde på omkring 50-100 mm. Skæreindretningen er I
fastgjort til den ende af stiftens polymerdel, som har mindst diameter. I
Indretningens polymerdel kan fastgøres til skæredelen ved sammensmeltning H
eller til en forbindelsesstift ved at sammenkitte de to dele med epoxy eller I
5 andet hensigtsmæssigt forbindelsesmateriale eller ved en kombination af disse I
procedurer. Skæredelen kan være et stykke Kirschner-tråd, hvor der er boret et H
t hul i trådens bagende til at omslutte den absorberbare del af indretningen. I
Borespidsen 14 på indretningens skæredel kan bore gennem knoglen, når den I
bruges i kombination med et hult, kirurgisk bor. Under brugen af det hule, H
10 kirurgiske bor fastholdes stiftens skæredel af borepatronen, og stiftens H
polymerdel forløber ind i borets legeme til bagenden af patronen. Som vist på H
tegningen har indretningens absorberbare del en spidsning imellem ca. 0,005- H
0,05 mm pr. mm-længde. Spidsningen er forskellen i diameter pr. tusindedel af H
længden. Det bemærkes, at indretningens skæredei har en diameter, som er H
15 større end den mindste diameter af indretningens polymerdel, men ikke så stor H
som den største diameter af indretningens polymerdel. Stiftens tilspidsning H
tillader gradvis indtrykning af stiften i hullet boret gennem knoglen. H
Stiftdiameteren er til sidst lige så stor som eller større end hullet i knoglen og H
kan prespasses inden i knoglen for at fastholde stiften i knoglen. H
20 Efter stiften er på plads, bortskæres de dele af stiften, som rager uden H
for knoglen som vist i fig. 3 med en skalpel eller andet egnet skæreværktøj, så H
stiften flugter med knogleoverfladen. H
Claims (5)
1. Benstift (11) omfattende en implanterbar stift med en i hovedsagen I cylindrisk del (12) og en skærende del (13), der er fastgjort til den ene ende af I 5 den i hovedsagen cylindriske del, kendetegnet ved, at den cylindriske del (12) I er fremstillet af et polymermateriale og har en tilspidsning på mellem 0,005 og 0,05 mm pr. mm-længde, idet den skærende del (13) er fastgjort til den ende af , polymerdelen (12), hvor stiften har den mindste diameter. I 10
2. Benstift ifølge krav 1, KENDETEGNET ved, AT polymerdelen (12) I af stiften er fremstillet af en polymer, der er absorberbar i et animalsk legeme.
3. Stift ifølge krav 1, KENDETEGNET ved, AT borespidsdelens spids I er af metal.
4. Stift ifølge krav 2, KENDETEGNET ved, AT stiftens polymerdel (12) I er sammensmedet med indretningens skæredel (13).
5. Benstift ifølge krav 2, KENDETEGNET ved, AT den absorberbare I 20 polymer er polydioxanon.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/202,602 US4858603A (en) | 1988-06-06 | 1988-06-06 | Bone pin |
US20260288 | 1988-06-06 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK274489D0 DK274489D0 (da) | 1989-06-02 |
DK274489A DK274489A (da) | 1989-12-07 |
DK174737B1 true DK174737B1 (da) | 2003-10-13 |
Family
ID=22750551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK198902744A DK174737B1 (da) | 1988-06-06 | 1989-06-02 | Stift til indsætning i knogle |
Country Status (14)
Country | Link |
---|---|
US (1) | US4858603A (da) |
EP (1) | EP0346033B1 (da) |
JP (1) | JPH0263450A (da) |
KR (1) | KR0162634B1 (da) |
AU (1) | AU611032B2 (da) |
DE (1) | DE68909497T2 (da) |
DK (1) | DK174737B1 (da) |
ES (1) | ES2044116T3 (da) |
FI (1) | FI92143C (da) |
IE (1) | IE63870B1 (da) |
MY (1) | MY104033A (da) |
NO (1) | NO167957C (da) |
NZ (1) | NZ229431A (da) |
PH (1) | PH25893A (da) |
Families Citing this family (129)
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JP2935708B2 (ja) * | 1987-02-20 | 1999-08-16 | ドレナート,クラウス | 骨ネジ |
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CA2013539C (en) * | 1989-03-31 | 1999-07-06 | Thomas W. Sander | Absorbable surgical fastener with bone penetrating elements |
CA2048414C (en) * | 1990-08-13 | 1999-05-25 | Thomas W. Sander | Absorbable surgical fastener with bone penetrating elements |
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US5269783A (en) * | 1991-05-13 | 1993-12-14 | United States Surgical Corporation | Device and method for repairing torn tissue |
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US5425776A (en) * | 1992-05-07 | 1995-06-20 | Cohen; Michael | Method of using absorbable joint implants for the lesser digits and metatarsal phalangeal joints in the surgical correction of the foot |
US5207712A (en) * | 1992-05-07 | 1993-05-04 | Michael Cohen | Absorbable joint implants for the lesser digits and metatarsal phalangeal joints in the surgical correction of the foot |
CA2437777C (en) | 1992-09-21 | 2006-11-28 | United States Surgical Corporation | Device for applying a meniscal staple |
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- 1988-06-06 US US07/202,602 patent/US4858603A/en not_active Expired - Lifetime
-
1989
- 1989-06-02 DK DK198902744A patent/DK174737B1/da not_active IP Right Cessation
- 1989-06-05 EP EP89305627A patent/EP0346033B1/en not_active Expired - Lifetime
- 1989-06-05 NO NO892301A patent/NO167957C/no not_active IP Right Cessation
- 1989-06-05 KR KR1019890007693A patent/KR0162634B1/ko not_active IP Right Cessation
- 1989-06-05 AU AU36043/89A patent/AU611032B2/en not_active Expired
- 1989-06-05 DE DE89305627T patent/DE68909497T2/de not_active Expired - Lifetime
- 1989-06-05 ES ES89305627T patent/ES2044116T3/es not_active Expired - Lifetime
- 1989-06-05 FI FI892743A patent/FI92143C/fi active IP Right Grant
- 1989-06-06 JP JP1142302A patent/JPH0263450A/ja active Granted
- 1989-06-06 PH PH38750A patent/PH25893A/en unknown
- 1989-06-06 MY MYPI89000763A patent/MY104033A/en unknown
- 1989-06-06 NZ NZ229431A patent/NZ229431A/xx unknown
- 1989-06-12 IE IE181889A patent/IE63870B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NO892301D0 (no) | 1989-06-05 |
FI92143B (fi) | 1994-06-30 |
IE63870B1 (en) | 1995-06-14 |
DE68909497T2 (de) | 1994-05-11 |
DK274489D0 (da) | 1989-06-02 |
PH25893A (en) | 1991-12-19 |
US4858603A (en) | 1989-08-22 |
AU3604389A (en) | 1989-12-07 |
NO167957B (no) | 1991-09-23 |
DK274489A (da) | 1989-12-07 |
NO892301L (no) | 1989-12-07 |
EP0346033A1 (en) | 1989-12-13 |
NZ229431A (en) | 1990-10-26 |
FI92143C (fi) | 1994-10-10 |
AU611032B2 (en) | 1991-05-30 |
JPH0560757B2 (da) | 1993-09-02 |
MY104033A (en) | 1993-10-30 |
FI892743A0 (fi) | 1989-06-05 |
NO167957C (no) | 1992-01-02 |
EP0346033B1 (en) | 1993-09-29 |
JPH0263450A (ja) | 1990-03-02 |
IE891818L (en) | 1989-12-06 |
FI892743A (fi) | 1989-12-07 |
KR0162634B1 (ko) | 1999-02-18 |
ES2044116T3 (es) | 1994-01-01 |
KR910000093A (ko) | 1991-01-29 |
DE68909497D1 (de) | 1993-11-04 |
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