GB1558965A - Orthopaedic stables - Google Patents
Orthopaedic stables Download PDFInfo
- Publication number
- GB1558965A GB1558965A GB3666875A GB3666875A GB1558965A GB 1558965 A GB1558965 A GB 1558965A GB 3666875 A GB3666875 A GB 3666875A GB 3666875 A GB3666875 A GB 3666875A GB 1558965 A GB1558965 A GB 1558965A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arms
- staple
- bone
- shape
- facing surfaces
- 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.)
- Expired
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
- A61B17/064—Surgical staples, i.e. penetrating the tissue
- A61B17/0642—Surgical staples, i.e. penetrating the tissue for bones, e.g. for osteosynthesis or connecting tendon to bone
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Rheumatology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (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)
Description
(54) ORTHOPAEDIC STAPLES
(71) We, NATIONAL RESEARCH
DEVELOPMENT CORPORATION, a
British Corporation established by Statute, of Kingsgate House, 66 - 74 Victoria Street,
London, S.W.1, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:
Orthopaedic staples in current surgical usage are of a conventional form consisting of an elongate metal member having a generally U-shape with the free end portions of its arms uniformly tapered. Such staples are employed for various purposes, one purpose being to secure adjacent fragments of a fractured bone in a desired relationship while the fragments re-unite. However, these staples do not, in themselves, exert any compressive forces between the bone fragments in a transverse direction relative to the staple arms. This is disadvantageous insofar as bone fragment union is speeded by compression and there is an increasing recognition of this factor in fracture fixation techniques.
According to the present invention there is provided an orthopaedic staple comprising an elongate member of biocompatible metal formed to a generally U-shape with parallel arms, the free end portions of said arms being tapered predominantly on their mutually facing surfaces, said arms being formed with retraction-resisting barbs by notches in said facing surfaces, and the staple being of sufficiently greater rigidity relative to bone to be substantially unyielding in shape when penetrated into bone to bridge a fracture, whereby such penetration exerts compressive force across said fracture to reduce the same by the action of said tapering, and bone material is urged into said notches by said force.
Normally the free end portions of both arms will be tapered only on their mutually facing surfaces and wholly across their respective widths.
One embodiment of an orthopaedic staple according to the invention is illustrated, by way of example, in the accompanying drawings.
The illustrated staple comprises a length of stainless steel of chrome-cobaltmolybdenum alloy rod 10 having a circular cross-section and formed to a U-shape. This shape has two parallel arms 11 of equal length bridged at one pair of ends by a base 12 extending substantially perpendicularly to the arms. The free end portions of the arms 11 have their mutually facing surfaces tapered by planar chambers 13 extending wholly across the widths of the arms to provide cutting edges 14 at the free ends.
The remaining feature of the illustrated staple is the provision of a respective
V-shaped notch 15 in each arm. These notches are located in the mutually facing surfaces of the arms adjacent the free end portions and are inclined similarly to their respective chamfers 13 to provide barbs 16.
Use of the illustrated staple is indicated relative to two fragments 17 of a bone fractured at 18. The fragments are reduced to the desired positional relationship and then the staple is located as shown to bridge the fracture and driven into the bone with the staple arms penetrating respective fragments. As the free end portions of the staple arms enter the bone, the chamfers are effective to force the fragments together at the fracture and so the staple secures the fragments in the desired relationship under compression. The compressive forces cause bone material to enter the notches 15, and the barbs 16 serve to inhibit undesired retraction of the staple from the bones.
While the invention has been described with more particular reference to the illustrated embodiment, which represents a preferred form of the invention for many specific applications in orthopaedic surgery, other forms may be used. For example, it may be advantageous for the base of the
U-shape to be of non-symmetrical, inclined disposition relative to the arms or of stepped configuration, these different forms being suited to application to an inclined bone surface such as may arise in arthrodesis.
WHAT WE CLAIM IS:
1. An orthopaedic staple comprising an elongate member of biocompatible metal formed to a generally U-shape with parallel arms, the free end portions of said arms being tapered predominantly on their mutually facing surfaces, said arms being formed with retraction-resisting barbs by notches in said facing surfaces. and the staple being of sufficiently greater rigidity relative to bone to be substantially unyielding in shape when penetrated into bone to bridge a fracture, whereby such penetration exerts compressive force across said fracture to reduce the same by the action of said tapering, and bone material is urged into said notches by said force.
2. A staple according to Claim 1 wherein said arms are tapered only on their mutually facing surfaces.
3. A staple according to Claim 2 wherein said tapers extend wholly across each of said arms to provide cutting edges at the free end thereof.
4. A staple according to any preceding claim wherein the base of said U-shape is of non-symmetrical inclined disposition relative to said arms, or is of stepped configuration.
5. A staple substantially as herein described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (5)
1. An orthopaedic staple comprising an elongate member of biocompatible metal formed to a generally U-shape with parallel arms, the free end portions of said arms being tapered predominantly on their mutually facing surfaces, said arms being formed with retraction-resisting barbs by notches in said facing surfaces. and the staple being of sufficiently greater rigidity relative to bone to be substantially unyielding in shape when penetrated into bone to bridge a fracture, whereby such penetration exerts compressive force across said fracture to reduce the same by the action of said tapering, and bone material is urged into said notches by said force.
2. A staple according to Claim 1 wherein said arms are tapered only on their mutually facing surfaces.
3. A staple according to Claim 2 wherein said tapers extend wholly across each of said arms to provide cutting edges at the free end thereof.
4. A staple according to any preceding claim wherein the base of said U-shape is of non-symmetrical inclined disposition relative to said arms, or is of stepped configuration.
5. A staple substantially as herein described with reference to the accompanying drawing.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3666875A GB1558965A (en) | 1975-09-05 | 1975-09-05 | Orthopaedic stables |
IE195176A IE43291B1 (en) | 1975-09-05 | 1976-09-01 | Orthopaedic staples |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3666875A GB1558965A (en) | 1975-09-05 | 1975-09-05 | Orthopaedic stables |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1558965A true GB1558965A (en) | 1980-01-09 |
Family
ID=10390196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3666875A Expired GB1558965A (en) | 1975-09-05 | 1975-09-05 | Orthopaedic stables |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1558965A (en) |
IE (1) | IE43291B1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4278091A (en) * | 1980-02-01 | 1981-07-14 | Howmedica, Inc. | Soft tissue retainer for use with bone implants, especially bone staples |
WO1983000010A1 (en) * | 1981-06-22 | 1983-01-06 | Minnesota Mining & Mfg | Internal fixation of bone, tendon, and ligaments |
GB2118662A (en) * | 1982-04-15 | 1983-11-02 | Techmedica Inc | Osteal medical staple |
GB2238591A (en) * | 1989-11-22 | 1991-06-05 | Jonathan Francis Fletcher | Thatching spar |
WO1992016152A1 (en) * | 1991-03-22 | 1992-10-01 | John Cumming | Staple applicator for use in the surgical treatment of female stress incontinence |
US5352229A (en) * | 1993-05-12 | 1994-10-04 | Marlowe Goble E | Arbor press staple and washer and method for its use |
CN104758018A (en) * | 2015-03-25 | 2015-07-08 | 天津万和医疗器械有限公司 | Suturing nail |
-
1975
- 1975-09-05 GB GB3666875A patent/GB1558965A/en not_active Expired
-
1976
- 1976-09-01 IE IE195176A patent/IE43291B1/en not_active IP Right Cessation
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4278091A (en) * | 1980-02-01 | 1981-07-14 | Howmedica, Inc. | Soft tissue retainer for use with bone implants, especially bone staples |
WO1983000010A1 (en) * | 1981-06-22 | 1983-01-06 | Minnesota Mining & Mfg | Internal fixation of bone, tendon, and ligaments |
US4414967A (en) * | 1981-06-22 | 1983-11-15 | Minnesota Mining And Manufacturing Company | Internal fixation of bone, tendon, and ligaments |
GB2118662A (en) * | 1982-04-15 | 1983-11-02 | Techmedica Inc | Osteal medical staple |
GB2154688A (en) * | 1982-04-15 | 1985-09-11 | Techmedica Inc | Osteal medical staple |
GB2238591A (en) * | 1989-11-22 | 1991-06-05 | Jonathan Francis Fletcher | Thatching spar |
GB2238591B (en) * | 1989-11-22 | 1993-03-24 | Jonathan Francis Fletcher | Thatching spur |
WO1992016152A1 (en) * | 1991-03-22 | 1992-10-01 | John Cumming | Staple applicator for use in the surgical treatment of female stress incontinence |
US5352229A (en) * | 1993-05-12 | 1994-10-04 | Marlowe Goble E | Arbor press staple and washer and method for its use |
CN104758018A (en) * | 2015-03-25 | 2015-07-08 | 天津万和医疗器械有限公司 | Suturing nail |
Also Published As
Publication number | Publication date |
---|---|
IE43291B1 (en) | 1981-01-28 |
IE43291L (en) | 1977-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19960722 |