CA2315490A1 - Bone plate - Google Patents
Bone plate Download PDFInfo
- Publication number
- CA2315490A1 CA2315490A1 CA 2315490 CA2315490A CA2315490A1 CA 2315490 A1 CA2315490 A1 CA 2315490A1 CA 2315490 CA2315490 CA 2315490 CA 2315490 A CA2315490 A CA 2315490A CA 2315490 A1 CA2315490 A1 CA 2315490A1
- Authority
- CA
- Canada
- Prior art keywords
- bone
- plate
- bioabsorbable
- bone plate
- implant
- 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.)
- Abandoned
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
- A61B17/80—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
- A61B17/8028—Cushions, i.e. elements forming interface between bone plate and bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00004—(bio)absorbable, (bio)resorbable, 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)
- Materials For Medical Uses (AREA)
Abstract
There is described an improved bone plate comprising implant human bone and bioabsorbable polymer.
Description
BONE PLATE
Backgroand Currently it is standard practice to reduce bone fractures and in some cases provide internal fixation with metal plates arid screws. The common materials currently used are stainless steel, chrorae cobalt, titanium and various alloys of such metals. 'The bone plates arc designed to support fA-actured bones in place so that they may heal in an appropriate position. The bone plates are superior to immobilization of the bone using simple casting techniques since they eliminate the inconvenience of long casting periods and thus permits earlier mobility to the patient.
Many metallic bone plates were designed over the years for varying purposes.
In general, the design consists of a bar of the particular metal which is curved on the surface, and the device is then placed against the borxe. Series of screws are then introduced into available screw holes on the plate to secure the plate to the bone.
It has been suggested that it would be desirable to form such bone plates ;6~om materials which would be absorbed by the body. Such materials are called bioabsorbable materials. Examples of such bioabsorbables are: poly(hydroxy acids), polyorthoesters, polydioxanone, polyanhydrides, polyphosphoesters,, and poly(E-caprolactone). Bioabsozbable fracture fixation devices offer three major advantages over conventional metallic implants: the need for removal surgery is obviated, the degradation products are biocompatible in contrast to harmful metallic iozts, and the elastic modulus is closer to that of bone, which could minimize stress concentrations near the extremeities of the irnplaztt and reduce, if not eliminate, stress protection atrophy of the bone.
However, current bioabsorbables are inadequate in strength in comparison to their metallic counterparts. Xt is possible to simply increase the bioabsorbable thickness td meet rraechanical requirements, but such method is not desirable. In order to compensate for the lack of strength, a stronger material can be combined and bonded with the bioabsorbable to for~oa a complete device.
Sunnnuary of the Invention '1'l~e present invention provides a bone plate made from two different materials bonded together:
implant human bone and bioabsorbable polymer. This plate can be used in the fixation of bones without fear of the bone plate breaking. The device can he a sandwich design in which multiple alternate layers of bones and bioabsorbables are bonded together. Example combinations of layering rn:ay be: bone and bioabsorbable, or bone, bioabsozbable and bone.
Brief Description of the Drawings Figure 1 is a perspective exploded view of the present invention comprising one layer of bone and two layers of bio-absorbable material;
Figure 2 is a perspective view of the present invention comprising two layers of bone and one layer of bio-absorbable material;
Figure 3 is a perspective view of the present invention having an inner layerof bone and an outer layer of bio-absorbable material; and Figure 4 is a perspective view of the present invention having an inner layer of bio-absorbable material and an outer layer of bone.
DetaiXed Aescriptioa of the Invention The bone plate of the present invention is made from a bioabsorbable polymer (e.g. absorbable polylactide polymer disclosed in U.S. Pat. Nos. 4,539,981 and 4,550,449).
Zznplant human bones obtained from parents themselves or the bone bank will be bonded with bioabsorbable polymers to produce hone plates and other internal fixation devices. Screws can be made of either znetal.lic or bioabsorbable matezials. The construct will maintain its strengti~ for an appropriate period of time for the bone, onto which it is placed, to heal. Over tiute, the bioabsorbable compbncnt will be absorbed while the implant bone will fuse with the fractured bone. A,s the bioabsorbable is absorbed, the bone plate will lose its s~ength. At the same ti~~ e, tl'te fiactured bone :will ba healing and eventually be capable of aESUming its normal load.
Backgroand Currently it is standard practice to reduce bone fractures and in some cases provide internal fixation with metal plates arid screws. The common materials currently used are stainless steel, chrorae cobalt, titanium and various alloys of such metals. 'The bone plates arc designed to support fA-actured bones in place so that they may heal in an appropriate position. The bone plates are superior to immobilization of the bone using simple casting techniques since they eliminate the inconvenience of long casting periods and thus permits earlier mobility to the patient.
Many metallic bone plates were designed over the years for varying purposes.
In general, the design consists of a bar of the particular metal which is curved on the surface, and the device is then placed against the borxe. Series of screws are then introduced into available screw holes on the plate to secure the plate to the bone.
It has been suggested that it would be desirable to form such bone plates ;6~om materials which would be absorbed by the body. Such materials are called bioabsorbable materials. Examples of such bioabsorbables are: poly(hydroxy acids), polyorthoesters, polydioxanone, polyanhydrides, polyphosphoesters,, and poly(E-caprolactone). Bioabsozbable fracture fixation devices offer three major advantages over conventional metallic implants: the need for removal surgery is obviated, the degradation products are biocompatible in contrast to harmful metallic iozts, and the elastic modulus is closer to that of bone, which could minimize stress concentrations near the extremeities of the irnplaztt and reduce, if not eliminate, stress protection atrophy of the bone.
However, current bioabsorbables are inadequate in strength in comparison to their metallic counterparts. Xt is possible to simply increase the bioabsorbable thickness td meet rraechanical requirements, but such method is not desirable. In order to compensate for the lack of strength, a stronger material can be combined and bonded with the bioabsorbable to for~oa a complete device.
Sunnnuary of the Invention '1'l~e present invention provides a bone plate made from two different materials bonded together:
implant human bone and bioabsorbable polymer. This plate can be used in the fixation of bones without fear of the bone plate breaking. The device can he a sandwich design in which multiple alternate layers of bones and bioabsorbables are bonded together. Example combinations of layering rn:ay be: bone and bioabsorbable, or bone, bioabsozbable and bone.
Brief Description of the Drawings Figure 1 is a perspective exploded view of the present invention comprising one layer of bone and two layers of bio-absorbable material;
Figure 2 is a perspective view of the present invention comprising two layers of bone and one layer of bio-absorbable material;
Figure 3 is a perspective view of the present invention having an inner layerof bone and an outer layer of bio-absorbable material; and Figure 4 is a perspective view of the present invention having an inner layer of bio-absorbable material and an outer layer of bone.
DetaiXed Aescriptioa of the Invention The bone plate of the present invention is made from a bioabsorbable polymer (e.g. absorbable polylactide polymer disclosed in U.S. Pat. Nos. 4,539,981 and 4,550,449).
Zznplant human bones obtained from parents themselves or the bone bank will be bonded with bioabsorbable polymers to produce hone plates and other internal fixation devices. Screws can be made of either znetal.lic or bioabsorbable matezials. The construct will maintain its strengti~ for an appropriate period of time for the bone, onto which it is placed, to heal. Over tiute, the bioabsorbable compbncnt will be absorbed while the implant bone will fuse with the fractured bone. A,s the bioabsorbable is absorbed, the bone plate will lose its s~ength. At the same ti~~ e, tl'te fiactured bone :will ba healing and eventually be capable of aESUming its normal load.
Claims (3)
1. A bone plate for the treatment of bone fractures comprising implant human bone and bioasbsorbable polymer.
2. The bone plate of claim 1 wherein said human bone implant and said bioabsorbable polymer are bonded together in alternate layers.
3 A method of fixating a bone fraction, comprising the steps of applying a bone plate across said fracture for immobilization thereof; said plate comprising a combination of implant human bone and bioabsorbable polymer
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2315490 CA2315490A1 (en) | 2000-08-11 | 2000-08-11 | Bone plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2315490 CA2315490A1 (en) | 2000-08-11 | 2000-08-11 | Bone plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2315490A1 true CA2315490A1 (en) | 2002-02-11 |
Family
ID=4166870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2315490 Abandoned CA2315490A1 (en) | 2000-08-11 | 2000-08-11 | Bone plate |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2315490A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103654928A (en) * | 2013-12-10 | 2014-03-26 | 徐斌 | Self-releasing-type internal fracture fixation system |
-
2000
- 2000-08-11 CA CA 2315490 patent/CA2315490A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103654928A (en) * | 2013-12-10 | 2014-03-26 | 徐斌 | Self-releasing-type internal fracture fixation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bos et al. | Bio-absorbable plates and screws for internal fixation of mandibular fractures: A study in six dogs | |
| Bos et al. | Bone-plates and screws of bioabsorbable poly (L-lactide) An animal pilot study | |
| US20050261780A1 (en) | Form-fitting bioabsorbable mesh implant | |
| US9173688B2 (en) | Bone implants | |
| Bessho et al. | A bioabsorbable poly-L-lactide miniplate and screw system for osteosynthesis in oral and maxillofacial surgery | |
| US4338926A (en) | Bone fracture prosthesis with controlled stiffness | |
| EP1709921B1 (en) | Bone plate with suture loops | |
| US5466262A (en) | Malleable fracture stabilization device with micropores for directed drug delivery | |
| ES2264254T3 (en) | BIOABSORBIBLE DEFORMABLE FIXING PLATE. | |
| Wehbé et al. | Ulnar shortening using the AO small distractor | |
| EP2039311A1 (en) | Orthopaedic Bone Plate and Spacer | |
| EP0149540A2 (en) | Improvements in or relating to bone fracture fixation plates | |
| Kim et al. | Treatment of mandible fractures using bioabsorbable plates | |
| ATE419021T1 (en) | BIOACTIVE, ABSORBABLE SURGICAL COMPOSITE MATERIALS AND DEVICES | |
| Lin et al. | The merit of sintered PDLLA/TCP composites in management of bone fracture internal fixation | |
| Habal et al. | Key points in the fixation of the craniofacial skeleton with absorbable biomaterial | |
| Waris et al. | Self-reinforced bioabsorbable versus metallic fixation systems for metacarpal and phalangeal fractures: a biomechanical study | |
| Suuronen et al. | New generation biodegradable plate for fracture fixation: Comparison of bending strengths of mandibular osteotomies fixed with absorbable self-reinforced multi-layer poly-L-lactide plates and metallic plates—An experimental study in sheep | |
| CA2318862A1 (en) | Process to pretreat copper surfaces | |
| KR101826590B1 (en) | Self-detaching layer for easy implant removal | |
| CA2315490A1 (en) | Bone plate | |
| JP3029266B2 (en) | Osteosynthesis material | |
| JP3177848B2 (en) | Osteosynthesis material | |
| Stendel et al. | Biodegradable implants in neurosurgery | |
| Kellman et al. | Bioresorbable screws for facial bone reconstruction: a pilot study in rabbits |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |