CA2416117A1 - Cranial flap clamp and instrument for use therewith - Google Patents

Cranial flap clamp and instrument for use therewith Download PDF

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Publication number
CA2416117A1
CA2416117A1 CA002416117A CA2416117A CA2416117A1 CA 2416117 A1 CA2416117 A1 CA 2416117A1 CA 002416117 A CA002416117 A CA 002416117A CA 2416117 A CA2416117 A CA 2416117A CA 2416117 A1 CA2416117 A1 CA 2416117A1
Authority
CA
Canada
Prior art keywords
clamping
clamping member
clamp
extension member
cranial flap
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
CA002416117A
Other languages
French (fr)
Other versions
CA2416117C (en
Inventor
John H. Manthorp
James P. Hearn
Sean H. Kerr
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22826552&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2416117(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to CA2696262A priority Critical patent/CA2696262C/en
Publication of CA2416117A1 publication Critical patent/CA2416117A1/en
Application granted granted Critical
Publication of CA2416117C publication Critical patent/CA2416117C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • A61B17/688—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for reattaching pieces of the skull
    • 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
    • A61B17/8869—Tensioning devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00862—Material properties elastic or resilient

Abstract

A cranial flap clamp (10, 110) includes a first clamping member (12; 112), an extension member (16; 116), and a second clamping member (14; 114). At least a portion of the inner surface (18; 118) of the first clamping member (12; 112) is positionable against inferior surfaces of a bone flap (36) and skull (38) and at least a portion of the inner surface (28; 128) of the second clamping member (14; 114) is positionable against superior surfaces of the bone flap (36) and skull (38). The extension member (16; 116) extends from the first clamping member (12; 112) and fits between the bone flap (36) and skull (38).
The second clamping member (14; 114) has a through opening (32; 132) for receiving the extension member (16; 116). A stop (52; 152) provided by mechanical deformation for which an instrument is disclosed of the extension member (16; 116) at any location along its length and adjacent the outer surface (30; 130) of the second clamping member (14; 114) secures the clamping member (12; 112) against the bone flap (36) and skull (38).

Claims (26)

1. A cranial flap clamp (10;110) for fixing a bone flap to a skull comprising:
A) a first clamping member (12;112) having inner and outer surfaces (18;20;118;120), at least a portion of the inner surface (18;118) positionable against inferior surfaces of the bone flap (36) and skull (38);
B) an extension member (16;116) extending from the first clamping member (12;112) and configured and dimensioned to fit between the bone flap (36) and the skull (38);
C) a second clamping member (14;114) having inner and outer surfaces (28;30;128;130) and an opening (32;132) through the inner and outer surfaces (28;30;128;130) for slidably receiving the extension member (16;116), with at least a portion of the inner surface (28;128) positionable against superior surfaces of the bone flap (36) and skull (38), D) wherein movement of at least one of the first and second clamping members (12;14;112;114) from a first position with the second clamping member (14;114) distal to the first clamping member (12;112) to a second position with the second clamping member (14;114) proximal to the first clamping member (12;112) urges the inner surface (18;118) of the first clamping member (12;112) against the inferior surfaces of the bone flap (36) and skull (38) and urges the inner surface (28;128) of the second clamping member (14;114) against the superior surfaces of the bone flap (36) and skull (38);
and D) a stop (52;152) provided by mechanical deformation of the extension member (16;116) at a surgeon selected location along its length and adjacent the outer surface (30;130) of the second clamping member (14;114) when the first and second clamping members (12;14;112;114) are in the second position to secure the inner surface (18;118) of the first clamping member (12;112) against the inferior surfaces of the bone flap and skull and the inner surface (28;128) of the second clamping member (14;114) against the superior surfaces of the bone flap (36) and skull (38).
2. The cranial flap clamp of claim 1 wherein the inner surfaces (18;28;118;128) of the first and second clamping members (12;14;112;114) are substantially smooth.
3. The cranial flap clamp of claim 2 wherein the inner surfaces (18;28;118;128) of the first and second clamping members (12;14;112;114) are concave with the first and second clamping members (12;14;112;114) in the first position and the inner surfaces (18;28;118;128) of the first and second clamping members (12;14;112;114) flatten out when the first and second clamping members (12;14;112;114) are in the second position.
4. The cranial flap clamp of claim 3 wherein the second clamping member (14;114) has a disk shape with a plurality of cutouts extending radially from the opening (32;132).
5. The cranial flap clamp of claim 1 wherein the extension member (16;116) is a tube and the stop (52;152) comprises a crimp in the tube.
6. The cranial flap clamp of claim 5 wherein the extension member (16) includes a head (24) located at a distal end and the first clamping member (12) includes a bore for slidably receiving the extension member (16), the head (24) engaging edges of the bore to prevent the first clamping member (16) from sliding off the extension member (16).
7. The cranial flap clamp of claim 6 wherein the tube has an enlarged portion (26) near the inner surface (18) of the first clamping member (12) for preventing movement of the first clamping member (12) along the tube away from the head (24).
8. The cranial flap clamp of claim 5 wherein, when the first and second clamping members (12;14) are in the first position, the tube includes a flared proximal portion (34) for preventing the second clamping member (14) from sliding off the tube.
9. The cranial flap clamp of claim 5 wherein the opening (32;132) has a substantially circular shape which is smaller than the crimp.
10. The cranial flap clamp of claim 9 wherein the opening (32;132) includes a countersink for receiving the stop (52;152) and the stop (52;152) fits substantially within the countersink.
11. The cranial flap clamp of claim 1 wherein the extension member (16;116) is a ribbon and the opening (32;132) of the second clamping member (14;114) has a rectangular shape.
12. The cranial flap clamp of claim 11 wherein the stop (52;152) comprises a twisted portion of the ribbon.
13. The cranial flap clamp of claim 12 wherein the second clamping member (14;114) is provided with a recessed area surrounding the opening (32;132), wherein the stop (52;152) fits substantially within the recessed area.
14. The cranial flap clamp of claim 13 wherein the recessed area has a width that increases from the center of the opening (32;132), a depth that increases from the center of the opening (32;132) and edges which form a cutting surface so that the stop (52;152) may be formed by twisting and shearing of the ribbon.
15. The cranial flap clamp of claim 11 wherein the extension member (116) is integral with the first clamping member (112).
16. The cranial flap clamp of claim 11 wherein the second clamping member (14;114) has at least one fastener hole for receiving a fastener.
17. A securing instrument (210) for the cranial flap clamp of claim 1 comprising:
a) first and second pivotally connected handles (212;214), each of said handles (212;214) having proximal and distal portions;
b) a gripping arm (224) operatively connected with the first handle (212) and having proximal and distal portions;
c) a tensioning arm (226) operatively connected with the second handle (214) and having proximal and distal portions, the gripping and tensioning arms (224;226) movable in response to movement of the first and second handles (212;214);
d) a slot (228) extending through the distal portions of the gripping and tensioning arms (224;226) for receiving the extension member (16;116) of the cranial flap clamp (10;110);
e) a clamping element (230) operatively associated with the slot (228) and having active and inactive configurations, the inactive configuration allowing sliding of the extension member (16;116) through the slot (228) and the active configuration clamping a portion of the extension member (16;116) against a wall of the slot (228) to inhibit sliding of the extension member (16;116) through the slot (228); and f) a crimping assembly (238) operatively associated with at least one of the gripping and tensioning arms (224;226) for crimping the extension member (16;116), g) wherein pivoting of the first and second handles (212;214) causes the gripping and tensioning arms (224;226) to separate with the tensioning arm (226) engaging the outer surface (30;130) of the second clamping member (14;114) and the clamping element (230;
in the active position thereby moving the first and second clamping members (12;14;112;114) from the first position to the second position.
18. The securing instrument of claim 17 wherein the clamping element (230) comprise a clamp (232) rotatably coupled to the gripping arm (224) and wherein rotation of the clamp (232) within the slot (228) upon separation of the gripping and tensioning arms (224;226) moves the clamping element (230) from the inactive configuration to the active configuration.
19. The securing instrument of claim 18 further comprising a resilient member biasing the clamping element (230) in the active configuration when the gripping and tensioning arms (224;226) are separated.
20. The securing instrument of claim 19 wherein the tensioning arm (226) includes a foot maintaining the clamping element (230) in the inactive configuration when the gripping and tensioning arms (224;226) are in contact.
21. The securing instrument of claim 20 wherein the foot includes a ramped surface.
22. The securing instrument of claim 17 wherein the distal portion of the tensioning arm (226) includes a grooved end and the crimping assembly comprises (238):
A) a slider (240) having a crimping edge for crimping the extension member (16;116) and sides (244) configured and dimensioned for sliding in the grooved end of the tensioning arm (226);
B) a link (246) operatively associated with the tensioning arm (226) for sliding movement with respect thereto, the link (246) having a distal end coupled to the slider (240) and a proximal end with teeth (248); and 17~

C) a lever (250) having a distal end rotatably coupled to the proximal portion of the tensioning arm (226), the distal end having teeth (252) engaging the teeth (248) of the distal end of the link (246).
23. The securing instrument of claim 22 wherein the crimping assembly (238) includes a cutting stop (254), the cutting stop (254) cooperating with the crimping edge (242) of the slider (240) to crimp and cut the extension member (16;116).
24. The securing instrument of claim 17 wherein:
a) the gripping arm (224) further comprises an intermediate portion located between the gripping arm proximal and distal portions with the gripping arm proximal portion extending from the distal portion of the first handle (212), the distal portion of the gripping arm (224) extending from the intermediate portion substantially parallel to the proximal portion, and the intermediate portion angling from the gripping arm proximal portion and;
b) the tensioning arm (226) further comprises an intermediate portion located between the tensioning arm proximal and distal portions with the tensioning arm proximal portion extending from the distal portion of the second handle (214), the distal portion of the tensioning arm (226) extending from the intermediate portion substantially parallel to the proximal portion, and the intermediate portion angling from the tensioning arm proximal portion.
25. The securing instrument of claim 17 further comprising a resilient element (216) located between the first and second handles (212;214) biasing the first and second handles (212;214) away from each other.
26. The securing instrument of claim 25 further comprising:
A) a locking bar (220) having a first end pivotably coupled to the first handle (212) and a curved body portion with a plurality of teeth (222); and B) a locking clip (218) pivotably coupled to the second handle (214) and having a through channel, C) wherein the locking clip (218) is movable between a free position in which the locking bar (220) is moveable in and out of the channel and a ratchet position in which the teeth (222) of the locking bar (220) engage an edge of the channel to prohibit the locking bar (220) from moving out of the channel.
CA2416117A 2000-07-26 2001-06-07 Cranial flap clamp and instrument for use therewith Expired - Fee Related CA2416117C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2696262A CA2696262C (en) 2000-07-26 2001-06-07 Cranial flap clamp and instrument for use therewith

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US22114800P 2000-07-27 2000-07-27
US60/221,148 2000-07-27
PCT/CH2001/000349 WO2002009602A1 (en) 2000-07-27 2001-06-07 Cranial flap clamp and instrument for use therewith

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2696262A Division CA2696262C (en) 2000-07-26 2001-06-07 Cranial flap clamp and instrument for use therewith

Publications (2)

Publication Number Publication Date
CA2416117A1 true CA2416117A1 (en) 2002-02-07
CA2416117C CA2416117C (en) 2010-06-01

Family

ID=22826552

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2696262A Expired - Fee Related CA2696262C (en) 2000-07-26 2001-06-07 Cranial flap clamp and instrument for use therewith
CA2416117A Expired - Fee Related CA2416117C (en) 2000-07-26 2001-06-07 Cranial flap clamp and instrument for use therewith

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2696262A Expired - Fee Related CA2696262C (en) 2000-07-26 2001-06-07 Cranial flap clamp and instrument for use therewith

Country Status (15)

Country Link
US (1) US7361178B2 (en)
EP (1) EP1303223B2 (en)
JP (1) JP4871485B2 (en)
AR (1) AR030437A1 (en)
AT (2) ATE302569T1 (en)
AU (2) AU2001260010B2 (en)
BR (2) BR0117289B1 (en)
CA (2) CA2696262C (en)
DE (2) DE60112945T3 (en)
DK (1) DK1303223T3 (en)
ES (2) ES2245692T5 (en)
HK (1) HK1062877A1 (en)
MX (1) MXPA02012950A (en)
WO (1) WO2002009602A1 (en)
ZA (1) ZA200300151B (en)

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