CA2547098A1 - Cannulated fastener system - Google Patents

Cannulated fastener system Download PDF

Info

Publication number
CA2547098A1
CA2547098A1 CA002547098A CA2547098A CA2547098A1 CA 2547098 A1 CA2547098 A1 CA 2547098A1 CA 002547098 A CA002547098 A CA 002547098A CA 2547098 A CA2547098 A CA 2547098A CA 2547098 A1 CA2547098 A1 CA 2547098A1
Authority
CA
Canada
Prior art keywords
screwdriver
bone
fastener
sleeve
screw
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
Application number
CA002547098A
Other languages
French (fr)
Other versions
CA2547098C (en
Inventor
Paul Ciccone
Steven F. Murray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Synthes USA LLC
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2547098A1 publication Critical patent/CA2547098A1/en
Application granted granted Critical
Publication of CA2547098C publication Critical patent/CA2547098C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
    • 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
    • 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
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
    • A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
    • 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
    • A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
    • 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
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8875—Screwdrivers, spanners or wrenches
    • A61B17/8877—Screwdrivers, spanners or wrenches characterised by the cross-section of the driver bit
    • A61B17/888—Screwdrivers, spanners or wrenches characterised by the cross-section of the driver bit the driver bit acting on the central region of the screw head
    • 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
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8875—Screwdrivers, spanners or wrenches
    • A61B17/8886—Screwdrivers, spanners or wrenches holding the screw head
    • A61B17/8891—Screwdrivers, spanners or wrenches holding the screw head at its periphery
    • 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
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
    • 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
    • A61B17/865—Packages or dispensers for bone screws or threaded wires

Abstract

A cannulated fastener system is provided for orthopedic applications that include attaching bone plates to bone. The bone fastener has a cannulation with an inner shape. One or more screwdrivers is provided with a shaft having a shape that matches the cannulation of the fastener to rotationally fix the fastener to the screwdriver. In addition, the screwdrivers have a cutting blade that begins the drilling of a hole for the bone fastener. The screwdrivers may either be for use with a single fastener or have multiple fasteners loaded within a retaining sleeve for automatic or controlled dispensing.

Claims (33)

1. A bone fastener system comprising:
at least a first cannulated fastener member;
a screwdriver member having first and second ends with an intermediate portion, the first end comprising a cutting blade configured to drill a hole in bone;
wherein the intermediate portion has an outer surface configured to be received within the cannulation of the fastener member, the outer surface and cannulation further configured so that when at least a portion of the intermediate portion is disposed within the cannulation, the fastener member and the screwdriver are rotationally fixed with respect to each other.
2. The bone fastener system of claim 1, wherein the cannulation of the fastener member and the intermediate portion of the screwdriver are both of a polygonal shape and the polygonal section of the screwdriver mates with the polygonal shaped cannulation of the fastener member such that the fastener member is mounted on the screwdriver and driven into the bone as the cutting blade drills the hole in the bone.
3. The bone fastener system of claim 1, wherein the fastener member has a head portion, said head portion comprising a flange having an underside configured to engage a bone or bone plate surface.
4. The bone fastener system of claim 1, wherein the fastener member has at least one cutting flute for engaging and cutting bone.
5. The bone fastener system of claim 1, wherein the fastener member comprises self-tapping threads.
6. The bone fastener system of claim 1, further comprising at least a second cannulated fastener member, the intermediate portion further comprising a first length, the first and second fasteners each comprising a second length, the first length being sufficient to allow at least the first and second fastener members to be received on the intermediate portion.
7. The bone fastener system of claim 6, wherein the screwdriver member is disposable.
8. The bone fastener system of claim 6, wherein the screwdriver member is reusable.
9. The bone fastener system of claim 6, wherein the screwdriver member further comprises a spring having first and second ends, the first end configured to engage the intermediate portion of the screwdriver member and second end configured to engage the head portion of the first or second fastener member, the spring member further configured to bias the first and second fastener members toward the screwdriver member first end.
10. The bone fastener system of claim 9, wherein the screwdriver member further comprises a sleeve for provisionally axially retaining the fastener members to the screwdriver.
11. The bone fastener system of claim 10, wherein at least a portion of the sleeve is at least partially transparent.
12. The bone fastener system of claim 10, wherein the sleeve has a lip disposed at one end, the lip configured for provisionally axially retaining each fastener member to the screwdriver.
13. The bone fastener system of claim 10, wherein the sleeve further comprises at least first and second legs configured to provisionally axially retain the fastener members to the screwdriver.
14. The bone fastener system of claim 6, wherein the screwdriver further comprises a ratchet system, the ratchet system comprising a sliding member having depressions or protrusions, a sleeve with depressions or protrusions surrounding the intermediate portion of the screwdriver, and a plunger having leg members configured to engage the depressions or protrusions of the sliding member and sleeve, wherein the sleeve member has a slot within which the sliding member is configured to slide for advancing the bone fastener members axially toward the first end of the screwdriver for insertion into bone.
15. The bone fastener system of claim 14, wherein the sleeve has a lip disposed at one end, the lip configured for provisionally axially retaining the fastener members to the screwdriver.
16. The bone fastener system of claim 14, wherein the sleeve further comprises at least first and second legs configured to provisionally axially retain the fastener members to the screwdriver.
17. A method of installing a bone screw in bone, the screw comprising a cannulated self-tapping bone screw having at least a portion of the cannulation formed in a polygonal shape; the method comprising:
providing a screwdriver with first and second ends, and a drilling tip and a shaft shaped to engage the polygonal portion of the cannulation of the screw;
inserting the screwdriver having first and second ends into the cannulation of the screw;
rotating the drilling blade of the screwdriver against the surface of a bone;
continuing rotation of the drilling blade until the screw is fully engaged in the bone; and removing the screwdriver from the cannulation of the screw.
18. The method of claim 17, wherein the screw has a head portion, said head portion comprising a flange having an underside configured to engage a bone or bone plate surface.
19. The method of claim 17, wherein the screw has at least one cutting flute for engaging and cutting bone.
20. The method of claim 17, wherein the polygonal section of the screwdriver is of sufficient length for accepting the loading of multiple screws prior to use.
21. The method of claim 20, wherein the screwdriver is disposable.
22. The method of claim 20, wherein the screwdriver is reusable.
23. The method of claim 20, wherein the screwdriver further comprises a shoulder on the shaft and a spring having a first end configured to engage the shoulder and a second end configured to engage the head portion of the at least one screw, the spring further configured to bias the at least one screw toward the screwdriver first end.
24. The method of claim 23, wherein the screwdriver further comprises a sleeve for provisionally axially retaining the screws to the screwdriver.
25. The method of claim 24, wherein the sleeve is transparent.
26. The method of claim 24, wherein the sleeve has a lip to maintain the screws until inserted into the bone.
27. The method of claim 20, wherein the sleeve further comprises legs configured to provisionally axially retain the screws to the screwdriver.
28. The method of claim 20, wherein the screwdriver has a ratchet system, the ratchet system comprising a sliding member with depressions or protrusions, a sleeve surrounding the intermediate portion of the screwdriver with depressions or protrusions, and a plunger with leg members for engaging the depressions or protrusions of the sliding member and sleeve member, wherein the sleeve member has a slot within which the sliding member slides for advancing the screws for insertion into the bone.
29. The method of claim 28, wherein the sleeve has a lip disposed at one end, the lip configured to provisionally axially retain the screws to the screwdriver.
30. The method of claim 28, wherein the sleeve further comprises legs configured to provisionally axially retain the screws to the screwdriver, the legs further configured to allow visualization of screws within the sleeve.
31. A cannulated screw system kit comprising:
at least one cannulated screw;
at least one screwdriver member having first and second ends and an intermediate portion, the first end comprising a cutting blade configured to drill a hole in bone and a shaft configured to be received within the cannulations of the at least one cannulated screws; and at least one bone plate.
32. The cannulated screw system kit of claim 31, wherein at least one screwdriver member is configured to receive a plurality of screws along the intermediate portion.
33. The cannulated screw system kit of claim 31, comprising at least a second screwdriver member having first and second ends and an intermediate portion, the intermediate portion being sized and configured to receive a plurality of cannulated screws thereon, the second screwdriver member further comprising a spring member having first and second ends, the first end configured to engage the intermediate portion of the screwdriver and the second end configured to engage a head portion of one of the screws to bias the screws toward the screwdriver first end.
CA2547098A 2003-11-26 2004-11-24 Cannulated fastener system Expired - Fee Related CA2547098C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US52488003P 2003-11-26 2003-11-26
US60/524,880 2003-11-26
PCT/US2004/039860 WO2005053753A2 (en) 2003-11-26 2004-11-24 Cannulated fastener system

Publications (2)

Publication Number Publication Date
CA2547098A1 true CA2547098A1 (en) 2005-06-16
CA2547098C CA2547098C (en) 2012-10-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2547098A Expired - Fee Related CA2547098C (en) 2003-11-26 2004-11-24 Cannulated fastener system

Country Status (11)

Country Link
US (2) US7766920B2 (en)
EP (1) EP1689303B1 (en)
JP (2) JP4851340B2 (en)
KR (1) KR101158495B1 (en)
CN (1) CN1905843B (en)
AU (1) AU2004294991A1 (en)
BR (1) BRPI0416951B1 (en)
CA (1) CA2547098C (en)
NZ (1) NZ547936A (en)
WO (1) WO2005053753A2 (en)
ZA (1) ZA200604622B (en)

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US7766920B2 (en) 2010-08-03
CA2547098C (en) 2012-10-09
EP1689303A4 (en) 2011-01-05
JP2007512100A (en) 2007-05-17
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US8282651B2 (en) 2012-10-09
EP1689303A2 (en) 2006-08-16
CN1905843B (en) 2012-09-26
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WO2005053753A2 (en) 2005-06-16
BRPI0416951A (en) 2007-02-13
BRPI0416951B1 (en) 2015-11-10
AU2004294991A1 (en) 2005-06-16
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US20050149031A1 (en) 2005-07-07
JP5416181B2 (en) 2014-02-12
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KR20070009539A (en) 2007-01-18
JP4851340B2 (en) 2012-01-11

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