WO2008036309A2 - Codified depth gauge - Google Patents

Codified depth gauge Download PDF

Info

Publication number
WO2008036309A2
WO2008036309A2 PCT/US2007/020287 US2007020287W WO2008036309A2 WO 2008036309 A2 WO2008036309 A2 WO 2008036309A2 US 2007020287 W US2007020287 W US 2007020287W WO 2008036309 A2 WO2008036309 A2 WO 2008036309A2
Authority
WO
WIPO (PCT)
Prior art keywords
reading unit
rings
drill bit
male component
hole
Prior art date
Application number
PCT/US2007/020287
Other languages
French (fr)
Other versions
WO2008036309A3 (en
Inventor
Alberto Angel Fernandez Dell'oca
Original Assignee
Synthes (U.S.A)
Synthes Gmbh
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 Synthes (U.S.A), Synthes Gmbh filed Critical Synthes (U.S.A)
Publication of WO2008036309A2 publication Critical patent/WO2008036309A2/en
Publication of WO2008036309A3 publication Critical patent/WO2008036309A3/en

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
    • A61B17/16—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
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1633—Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06—Measuring instruments not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06—Measuring instruments not otherwise provided for
    • A61B2090/062—Measuring instruments not otherwise provided for penetration depth

Definitions

  • Embodiments of the present invention relate to orthopedic measuring devices. More particularly, embodiments of the present invention relate to an apparatus and method for determining the depth of pre-drilled holes in bone that allow a surgeon to determine the required length of a screw to be used in the pre-drilled hole.
  • Known devices used to determine the depth of pre-drilled holes in bone include drill bits provided with markings or figures printed on the drill bit surface that identify the depth of the drilled hole. Also known are systems having a slotted drilling sleeve with depth markings adjacent the slot. These systems further include a drill bit with a narrow ring printed on the drill bit surface. In use, the drill bit is inserted into the drilling sleeve and the hole is drilled. The narrow ring on the drill bit aligns with the markings on the slotted drilling sleeve, thereby identifying the depth of the hole and thus, the required length of screw to be used.
  • problems with these known devices and systems include, but are not limited to: the markings or figures on the drill surface are often too small to be easily read by a surgeon during surgery; often times, in order to read the markings or figures on the drill bit, the drill must be rotated so that the surgeon can read the markings, which can be cumbersome and problematic during surgery; and the depth markings on the drilling sleeve are usually situated deep inside the incision or wound and are often covered in bodily fluids such as blood, making the depth markings difficult to read. [0006] Accordingly, there is a need for a simple, yet practical device or system that allows a surgeon to more easily and more accurately determine the depth of a drilled hole in bone, in order to select and use a screw having the required or proper length.
  • a codified depth gauge comprises a drill bit that includes a cutting portion and a shaft portion having a plurality of rings provided thereon.
  • the depth gauge also includes a drilling sleeve and a reading unit that comprises a female component and a male component having a front end, a rear end and a plurality of rings provided at the rear end.
  • the plurality of rings on the drill bit are spaced according to a code and the plurality of rings on the reading unit are spaced according to the same code as the plurality of rings on the drill bit.
  • the female component of the reading unit further comprises a hole and a groove to accommodate the male component, a rear end, and a flat front portion having a plurality of markings or figures thereon.
  • Another aspect of embodiments of the present invention is directed to a method of determining the length of a screw to be used in a hole drilled in a bone.
  • the method comprises the steps of providing a codified depth gauge that comprises: a drill bit including a cutting portion and a shaft portion having a plurality of differently shaded or colored rings spaced according to a code provided thereon; a drilling sleeve having a back end; and a reading unit comprising a male component having a front end, a rear end and a plurality of differently shaded or colored rings spaced according to the same code as the plurality of rings on the drill bit provided at the rear end, and a female component having a hole and a groove to slidingly receive and accommodate the male component, a rear end and a flat front portion having a plurality of markings or figures thereon.
  • the method also includes drilling the hole in the bone to a desired depth with the drill bit inserted in the drilling sleeve; viewing the shaft of the drill bit to determine the number of rings as well as the color or shade of the rings remaining at the back end of the drilling sleeve; adjusting the male component of the reading unit to correspond with the number of differently shaded or colored rings that remain showing on the drill bit; and reading the markings or figures on the flat front end portion of the female component of the reading unit that corresponds to the front end of the male component thereby obtaining the length of screw to be used in the hole.
  • FIG. 1 is a perspective view of a drill bit, according to an embodiment of the present invention.
  • FIG. 2 is a perspective view of a drilling sleeve, according to an embodiment of the present invention.
  • FIG. 3 is a perspective view of a reading unit, according to an embodiment of the present invention.
  • FIG. 4 is a perspective view of the drill bit of FIG. 1 inserted into the drilling sleeve of FIG. 2;
  • FIG. 5 is a perspective view of a reading unit, according to an embodiment of the present invention.
  • an embodiment of the present invention relates to a codified depth gauge for determining the depth of a pre-drilled hole in a bone in order to allow a surgeon to choose the appropriate length screw to be used in the hole.
  • an embodiment of the present invention comprises three components: a drill bit 1 having a plurality of differently shaded or colored rings 4 on its surface; a drilling sleeve 5; and a reading unit 6 that, in combination with the differently shaded or colored rings on the surface of the drill bit, is used to determine the depth of the drilled hole and hence, the required screw length to be used.
  • the drill bit 1 includes a cutting portion 3 and a shaft portion 2.
  • the shaft portion 2 is provided with a plurality of differently shaded or colored rings 4 that are spaced apart according to a code.
  • the drilling sleeve 5 which is of a known length, includes a hollow inner cavity 20 that is configured and adapted to receive the drill bit 1 therein and a back end 21.
  • the reading unit 6 comprises a male component 7 having a front end 9 and a rear end 22, and a female component 10.
  • the female component 10 includes a hole or hollow cavity 1 1 and groove 12 adapted and configured to slidingly receive and accommodate the male component 7, a rear end 13 and a front portion 23 having a plurality of markings or identifiers 14 associated with screw lengths or screw types included thereon, where the front portion 23, as shown in the figures, may be flat.
  • These plurality of markings or identifiers 14, for example can be length measurements in millimeters, inches or any other units or, they can identify specific types of screws to be used for the depth of the hole drilled.
  • the male component 7 of the reading unit 6 includes a plurality of differently shaded or colored rings 8 spaced according to the same code as the plurality of rings 4 on the shaft portion 2 of the drill bit 1 or, calibrated to correspond to the plurality of rings 4 on the drill bit 1. Accordingly, when the male component 7 is inserted into the female component 10 and the number of differently shaded or colored rings 8 at the rear end 22 of the male component 7 is set to correspond to the number of differently shaded or colored rings 4 on the shaft portion 2 of the drill bit 1, the front end 9 of the male component 7 indicates the required screw length or screw type on the front portion 23 of the female component 10 of the reading unit 6, to be used in the drilled hole. [0022] Operation of the present invention will now be described.
  • a surgeon inserts the coded drill bit 1 into the drilling sleeve 5 and drills the required hole in the bone. It is important that the surgeon use the coded drill bit 1 with the drilling sleeve 5 of the present invention together because the particular drilling sleeve's 5 length is important in obtaining or determining the correct depth of the drilled hole.
  • the surgeon views the shaft 2 of the drill bit 1 to determine how many rings 4 remain showing at the back end 21 of the drilling sleeve 5 as well as the color or shade of the remaining rings 4. This configuration is depicted in FIG. 4.
  • the surgeon communicates this information to a nurse so that he or she can feed the number and color or shade of rings to the reading unit 6 in order to determine the required screw length or type.
  • the nurse slidingly adjusts the male component 7 of the reading unit 6 to have the same number and/or color/shade of rings 8 extending from the back end 13 of the female component 10.
  • the nurse simply looks at the front portion 23 of female component 10 of the reading unit 6 to determine which marking or identifier 14 the front end 9 of the male component 7 is aligned with. This number 14, will be the required screw length or screw type.
  • An example of the present invention in use is as follows. After drilling a hole in a bone, the surgeon may see that one and a half dark rings 4 remain showing at the back end 21 of the drilling sleeve 5. This information is communicated to the nurse who then slidingly feeds the male component 7 of the reading unit 6 into the female component 10 such that one and a half dark rings 8 on the male component 7 remain visible at the back end 13 of the female component 10 of the reading unit 6. The nurse then simply reads the marking or identifier 14 on the front portion 23 of the reading unit 6 that corresponds to front end 9 of the male component 7 to determine the proper screw length or screw type. As shown in FIG. 5, in this example, the screw length would be 20 millimeters. After determining the correct screw length or screw type, the nurse simply hands the selected screw to the surgeon for use in the bone. Now, and only now, does the surgeon remove the drill bit 1 from the drilled hole in the bone to insert the selected screw.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Dentistry (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Pathology (AREA)
  • Earth Drilling (AREA)
  • Surgical Instruments (AREA)

Abstract

A codified depth gauge having a drill bit that includes a cutting portion and a shaft portion having a plurality of rings provided thereon. The codified depth gauge also includes a drilling sleeve and a reading unit having a female component and a male component having a front end and a rear end and a plurality of rings provided at the rear end.

Description

CODIFIED DEPTH GAUGE
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional Application No. 60/845,510, filed on September 19, 2006, the entire contents of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
Field of the Invention
[0002] Embodiments of the present invention relate to orthopedic measuring devices. More particularly, embodiments of the present invention relate to an apparatus and method for determining the depth of pre-drilled holes in bone that allow a surgeon to determine the required length of a screw to be used in the pre-drilled hole.
Description of the Related Art
[0003] When fixing bone fractures, it is often necessary to pre-drill the bone for insertion of a screw. Once pre-drilled, it is useful to know the depth of the hole to determine the length of the screw required to be used in the pre-drilled hole.
[0004] Known devices used to determine the depth of pre-drilled holes in bone include drill bits provided with markings or figures printed on the drill bit surface that identify the depth of the drilled hole. Also known are systems having a slotted drilling sleeve with depth markings adjacent the slot. These systems further include a drill bit with a narrow ring printed on the drill bit surface. In use, the drill bit is inserted into the drilling sleeve and the hole is drilled. The narrow ring on the drill bit aligns with the markings on the slotted drilling sleeve, thereby identifying the depth of the hole and thus, the required length of screw to be used.
[0005] However, problems with these known devices and systems include, but are not limited to: the markings or figures on the drill surface are often too small to be easily read by a surgeon during surgery; often times, in order to read the markings or figures on the drill bit, the drill must be rotated so that the surgeon can read the markings, which can be cumbersome and problematic during surgery; and the depth markings on the drilling sleeve are usually situated deep inside the incision or wound and are often covered in bodily fluids such as blood, making the depth markings difficult to read. [0006] Accordingly, there is a need for a simple, yet practical device or system that allows a surgeon to more easily and more accurately determine the depth of a drilled hole in bone, in order to select and use a screw having the required or proper length.
SUMMARY OF THE INVENTION
[0007] It is an object of embodiments of the present invention to provide a device for determining the length of a screw or screw type to be used in a drilled hole in a bone. [0008] It is a further object of embodiments of the present invention to provide a method of determining the length of a screw to be used in a hole drilled in a bone [0009] In accordance with embodiments of the present invention, a codified depth gauge is provided. The codified depth gauge comprises a drill bit that includes a cutting portion and a shaft portion having a plurality of rings provided thereon. The depth gauge also includes a drilling sleeve and a reading unit that comprises a female component and a male component having a front end, a rear end and a plurality of rings provided at the rear end. The plurality of rings on the drill bit are spaced according to a code and the plurality of rings on the reading unit are spaced according to the same code as the plurality of rings on the drill bit. The female component of the reading unit further comprises a hole and a groove to accommodate the male component, a rear end, and a flat front portion having a plurality of markings or figures thereon.
[0010] Another aspect of embodiments of the present invention is directed to a method of determining the length of a screw to be used in a hole drilled in a bone. The method comprises the steps of providing a codified depth gauge that comprises: a drill bit including a cutting portion and a shaft portion having a plurality of differently shaded or colored rings spaced according to a code provided thereon; a drilling sleeve having a back end; and a reading unit comprising a male component having a front end, a rear end and a plurality of differently shaded or colored rings spaced according to the same code as the plurality of rings on the drill bit provided at the rear end, and a female component having a hole and a groove to slidingly receive and accommodate the male component, a rear end and a flat front portion having a plurality of markings or figures thereon. The method also includes drilling the hole in the bone to a desired depth with the drill bit inserted in the drilling sleeve; viewing the shaft of the drill bit to determine the number of rings as well as the color or shade of the rings remaining at the back end of the drilling sleeve; adjusting the male component of the reading unit to correspond with the number of differently shaded or colored rings that remain showing on the drill bit; and reading the markings or figures on the flat front end portion of the female component of the reading unit that corresponds to the front end of the male component thereby obtaining the length of screw to be used in the hole. [0011] The various features of novelty that characterize the present invention are pointed out in particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects obtained by its uses, reference is made to the accompanying descriptive matter in which embodiments of the present invention are illustrated in the accompanying drawings in which corresponding components are identified by the same reference numerals.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The following detailed description, given by way of example and not intended to limit the present invention solely thereto, will best be appreciated in conjunction with the accompanying drawings, wherein like reference numerals denote like elements and parts, in which:
[0013] FIG. 1 is a perspective view of a drill bit, according to an embodiment of the present invention;
[0014] FIG. 2 is a perspective view of a drilling sleeve, according to an embodiment of the present invention;
[0015] FIG. 3 is a perspective view of a reading unit, according to an embodiment of the present invention;
[0016] FIG. 4 is a perspective view of the drill bit of FIG. 1 inserted into the drilling sleeve of FIG. 2; and
[0017] FIG. 5 is a perspective view of a reading unit, according to an embodiment of the present invention.
DESCRIPTION
[0018] The instant invention will now be described more fully hereinafter with reference to the accompanying drawings in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the illustrated embodiments set forth herein. Rather, these illustrated embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0019] One embodiment of the present invention relates to a codified depth gauge for determining the depth of a pre-drilled hole in a bone in order to allow a surgeon to choose the appropriate length screw to be used in the hole. Referring to the drawings, as depicted in FIGS. 1-3, an embodiment of the present invention comprises three components: a drill bit 1 having a plurality of differently shaded or colored rings 4 on its surface; a drilling sleeve 5; and a reading unit 6 that, in combination with the differently shaded or colored rings on the surface of the drill bit, is used to determine the depth of the drilled hole and hence, the required screw length to be used.
[0020] As can be seen in FIG. 1, the drill bit 1 includes a cutting portion 3 and a shaft portion 2. The shaft portion 2 is provided with a plurality of differently shaded or colored rings 4 that are spaced apart according to a code. As depicted in FIG. 2, the drilling sleeve 5, which is of a known length, includes a hollow inner cavity 20 that is configured and adapted to receive the drill bit 1 therein and a back end 21.
[0021] As depicted in FIG. 3, the reading unit 6 comprises a male component 7 having a front end 9 and a rear end 22, and a female component 10. The female component 10 includes a hole or hollow cavity 1 1 and groove 12 adapted and configured to slidingly receive and accommodate the male component 7, a rear end 13 and a front portion 23 having a plurality of markings or identifiers 14 associated with screw lengths or screw types included thereon, where the front portion 23, as shown in the figures, may be flat. These plurality of markings or identifiers 14, for example, can be length measurements in millimeters, inches or any other units or, they can identify specific types of screws to be used for the depth of the hole drilled. At its rear end 22, the male component 7 of the reading unit 6 includes a plurality of differently shaded or colored rings 8 spaced according to the same code as the plurality of rings 4 on the shaft portion 2 of the drill bit 1 or, calibrated to correspond to the plurality of rings 4 on the drill bit 1. Accordingly, when the male component 7 is inserted into the female component 10 and the number of differently shaded or colored rings 8 at the rear end 22 of the male component 7 is set to correspond to the number of differently shaded or colored rings 4 on the shaft portion 2 of the drill bit 1, the front end 9 of the male component 7 indicates the required screw length or screw type on the front portion 23 of the female component 10 of the reading unit 6, to be used in the drilled hole. [0022] Operation of the present invention will now be described. During surgery, a surgeon inserts the coded drill bit 1 into the drilling sleeve 5 and drills the required hole in the bone. It is important that the surgeon use the coded drill bit 1 with the drilling sleeve 5 of the present invention together because the particular drilling sleeve's 5 length is important in obtaining or determining the correct depth of the drilled hole. After the surgeon has drilled the hole to the desired depth, the surgeon views the shaft 2 of the drill bit 1 to determine how many rings 4 remain showing at the back end 21 of the drilling sleeve 5 as well as the color or shade of the remaining rings 4. This configuration is depicted in FIG. 4. [0023] After determining the number of rings 4 and their color or shade, the surgeon communicates this information to a nurse so that he or she can feed the number and color or shade of rings to the reading unit 6 in order to determine the required screw length or type. For example, the nurse slidingly adjusts the male component 7 of the reading unit 6 to have the same number and/or color/shade of rings 8 extending from the back end 13 of the female component 10. Once the male component 7 is adjusted such that the correct number and/or color/shade of rings extend from the back end 13 of the reading unit 6, the nurse simply looks at the front portion 23 of female component 10 of the reading unit 6 to determine which marking or identifier 14 the front end 9 of the male component 7 is aligned with. This number 14, will be the required screw length or screw type.
[0024] An example of the present invention in use is as follows. After drilling a hole in a bone, the surgeon may see that one and a half dark rings 4 remain showing at the back end 21 of the drilling sleeve 5. This information is communicated to the nurse who then slidingly feeds the male component 7 of the reading unit 6 into the female component 10 such that one and a half dark rings 8 on the male component 7 remain visible at the back end 13 of the female component 10 of the reading unit 6. The nurse then simply reads the marking or identifier 14 on the front portion 23 of the reading unit 6 that corresponds to front end 9 of the male component 7 to determine the proper screw length or screw type. As shown in FIG. 5, in this example, the screw length would be 20 millimeters. After determining the correct screw length or screw type, the nurse simply hands the selected screw to the surgeon for use in the bone. Now, and only now, does the surgeon remove the drill bit 1 from the drilled hole in the bone to insert the selected screw.
[0025] Although embodiments of the present invention and modifications thereof have been described in detail herein, it is to be understood that the present invention is not limited to these precise embodiments and modifications, and that other modifications and variations may be affected by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

WHAT IS CLAIMED IS:
1. A codified depth gauge comprising: a drill bit comprising a cutting portion and a shaft portion having a plurality of rings provided thereon; a drilling sleeve; and a reading unit comprising a female component and a male component having a front end, a rear end and a plurality of rings provided at the rear end.
2. The codified depth gauge of claim 1, wherein the plurality of rings on the drill bit are spaced according to a code.
3. The codified depth gauge of claim 2, wherein the plurality of rings on the reading unit are spaced according to the same code as the plurality of rings on the drill bit.
4. The codified depth gauge of claim 3, wherein the plurality of rings on the drill bit are differently shaded or colored.
5. The codified depth gauges of claim 4, wherein the plurality of rings on the depth gauge are differently shaded or colored.
6. The codified depth gauge of claim 1 , wherein the female component of the reading unit further comprises: a hole and a groove to accommodate the male component; a rear end; and a flat front portion having a plurality of markings or figures thereon.
7. The codified depth gauge of claim 6, wherein the male component of the reading unit is slidably disposed within the female component of the reading unit.
8. The codified depth gauge of claim 5, wherein the female component of the reading unit further comprises: a hole and a groove to receive and accommodate the male component; a rear end; and a flat front portion having a plurality of markings or figures thereon.
9. The codified depth gauge of claim 8, wherein the male component of the reading unit is slidably disposed within the female component of the reading unit.
10. The codified depth gauge of claim 9, wherein adjusting the male component of the reading unit to correspond with the number of differently shaded or colored rings that remain showing on the drill bit after the hole is drilled, indicates the length of screw to be used in the drilled hole.
11. The codified depth gauge of claim 10, wherein adjusting the male component of the reading unit with respect to the female component of the reading unit cause the front end of the male component to be adjusted in a corresponding manner on the flat front end portion of the female component thereby allowing a user to read the plurality of markings or figures on the flat front end portion of the female component that corresponds to the front end of the male component to obtain the length of screw to be used.
12. A device for determining a screw to be used in a hole drilled in a bone, the device comprising: a drill bit comprising a cutting portion and a shaft portion having a plurality of differently shaded or colored rings on its surface; a drilling sleeve of known length having a hollow inner cavity that is adapted and configured to receive the drill bit therein; and a reading unit comprising: a male component having a front end, a rear end a plurality of differently shaded or colored rings at its rear end; and a female component having a hollow cavity and a groove adapted and configured to slidingly receive the male component therein; a back end; and a front portion having a plurality of markings or identifies thereon; wherein the plurality of differently shaded or colored rings on the male component of the reading unit are calibrated to the plurality of differently shaded or colored rings on the drill bit.
13. The device of claim 12, wherein the plurality of markings or identifiers correspond to a screw length or screw type.
14. The device of claim 13, wherein the plurality of plurality of differently shaded or colored rings on the male component of the reading unit and the plurality of differently shaded or colored rings on the drill bit are calibrated to each other such that setting the male component of the reading unit to correspond to the number of differently shaded or colored rings remaining at the back end of the drilling sleeve after the hole in the bone is drilled, results in the reading unit identifying the length or type of screw to be used in the drilled hole.
15. The device of claim 13, wherein adjusting the male component of the reading unit to correspond with the number of differently shaded or colored rings that remain showing on the drill bit after the hole is drilled, indicates the length or type of screw to be used in the drilled hole.
16. The device of claim 15, wherein adjusting the male component of the reading unit with respect to the female component of the reading unit causes the front end of the male component to be adjusted in a corresponding manner on the front end portion of the female component thereby allowing a user to read the markings or figures on the flat front end portion of the female component that corresponds to the front end of the male component to obtain the length or type of screw to be used.
17. The device of claim 12, wherein the front portion of the female component is flat.
18. A method of determining the length of a screw to be used in a hole drilled in a bone, the method comprising the steps of: providing a codified depth gauge comprising: a drill bit comprising a cutting portion and a shaft portion having a plurality of differently shaded or colored rings spaced according to a code provided thereon; a drilling sleeve having a back end; and a reading unit comprising a male component having a front end, a rear end and a plurality of differently shaded or colored rings spaced according to the same code as the plurality of rings on the drill bit provided at the rear end, and a female component having a hole and a groove adapted and configured to slidingly receive and accommodate the male component therein, a rear end and a flat front portion having a plurality of markings or figures thereon; drilling the hole in the bone to a desired depth with the drill bit inserted in the drilling sleeve; viewing the shaft of the drill bit to determine the number of rings as well as the color or shade of the rings remaining at the back end of the drilling sleeve; adjusting the male component of the reading unit to correspond with the number of differently shaded or colored rings that remain showing on the drill bit; and reading the markings or figures on the flat front end portion of the female component of the reading unit that corresponds to the front end of the male component thereby obtaining the length of screw to be used in the hole.
19. A method of determining a screw to be used in a hole drilled in a bone, the method comprising the steps of: providing a device comprising: a drill bit comprising a cutting portion and a shaft portion having a plurality of differently shaded or colored rings on its surface; a drilling sleeve of known length having a hollow inner cavity that is adapted and configured to receive the drill bit therein and a rear end; and a reading unit comprising: a male component having a front end, a rear end a plurality of differently shaded or colored rings at its rear end; and a female component having a hollow cavity and a groove adapted and configured to slidingly receive and accommodate the male component therein; a back end; and a front portion having a plurality of markings or identifies thereon; wherein the plurality of differently shaded or colored rings on the male component of the reading unit are calibrated to the plurality of differently shaded or colored rings on the drill bit; drilling the hole in the bone to a desired depth with the drill bit inserted in the drilling sleeve; viewing the shaft of the drill bit to determine the number of rings as well as the color or shade of the rings remaining at the back end of the drilling sleeve; adjusting the male component of the reading unit to correspond with the number of differently shaded or colored rings that remain showing on the drill bit; and reading the plurality of markings or figures on the front end portion of the female component of the reading unit that corresponds to the front end of the male component thereby obtaining the screw to be used in the hole.
20. The device of claim 19, wherein the markings or identifiers correspond to a screw length or screw type.
21. The device of claim 19, wherein the plurality of rings on the male component .of the reading unit and the plurality of differently shaded or colored rings on the drill bit are calibrated to each other such that setting the male component of the reading unit to
" correspond to the number of differently shaded or colored rings remaining at the back end of the drilling sleeve after the hole in the bone is drilled results in the reading unit identifying the length or type of screw to be used in the drilled hole.
22. The device of claim 19, wherein the front end portion of the female component is flat.
PCT/US2007/020287 2006-09-19 2007-09-18 Codified depth gauge WO2008036309A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US84551006P 2006-09-19 2006-09-19
US60/845,510 2006-09-19

Publications (2)

Publication Number Publication Date
WO2008036309A2 true WO2008036309A2 (en) 2008-03-27
WO2008036309A3 WO2008036309A3 (en) 2008-06-19

Family

ID=39201071

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/020287 WO2008036309A2 (en) 2006-09-19 2007-09-18 Codified depth gauge

Country Status (1)

Country Link
WO (1) WO2008036309A2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010094846A1 (en) 2009-02-19 2010-08-26 Biotech International (Société Par Actions Simplifiée) Device to assist with the placement of screws in bone tissue and instrument applying said device, in particular for performing osteosynthesis of bone fragments
WO2011087379A1 (en) * 2010-01-12 2011-07-21 Pranesh Kumar Drill bit incorporating depth gauge
EP2777553A2 (en) * 2013-03-11 2014-09-17 DePuy (Ireland) Instrument assembly for implanting a stem component of a knee prosthesis
WO2024020176A1 (en) * 2022-07-22 2024-01-25 Stryker Corporation Systems and methods for sizing an electrode probe in an ablation procedure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3622676A1 (en) * 1985-08-28 1987-03-12 Werner Scholz Surgical drill
US20030130664A1 (en) * 1998-08-14 2003-07-10 Kyphon Inc. Systems and methods for treating vertebral bodies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3622676A1 (en) * 1985-08-28 1987-03-12 Werner Scholz Surgical drill
US20030130664A1 (en) * 1998-08-14 2003-07-10 Kyphon Inc. Systems and methods for treating vertebral bodies

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010094846A1 (en) 2009-02-19 2010-08-26 Biotech International (Société Par Actions Simplifiée) Device to assist with the placement of screws in bone tissue and instrument applying said device, in particular for performing osteosynthesis of bone fragments
WO2011087379A1 (en) * 2010-01-12 2011-07-21 Pranesh Kumar Drill bit incorporating depth gauge
EP2777553A2 (en) * 2013-03-11 2014-09-17 DePuy (Ireland) Instrument assembly for implanting a stem component of a knee prosthesis
JP2014171892A (en) * 2013-03-11 2014-09-22 Depuy (Ireland) Instrument assembly for implanting stem component of knee prosthesis and orthopaedic surgical procedure for using the same
EP2777553A3 (en) * 2013-03-11 2014-11-12 DePuy (Ireland) Instrument assembly for implanting a stem component of a knee prosthesis
US9247945B2 (en) 2013-03-11 2016-02-02 Depuy (Ireland) Instrument assembly for implanting a stem component of a knee prosthesis and orthopaedic surgical procedure for using the same
WO2024020176A1 (en) * 2022-07-22 2024-01-25 Stryker Corporation Systems and methods for sizing an electrode probe in an ablation procedure

Also Published As

Publication number Publication date
WO2008036309A3 (en) 2008-06-19

Similar Documents

Publication Publication Date Title
AU719598B2 (en) Drilling guide and measuring instrumentation
US9724171B2 (en) Methods, systems, and devices for gauging a bone tunnel
EP1567070B1 (en) Adjustable length tap and method for drilling and tapping a bore in bone
JP6208233B2 (en) Drill guide
US9839464B2 (en) Device and method for use during ligament reconstruction
JP2020073221A (en) Surgical guide for use in ligament repair procedures
US7771143B2 (en) Drill bit assembly with adjustable drill stop sleeve
JP5749333B2 (en) Intramedullary nail aiming device
CN101146564B (en) Tube placement apparatus
EP3545878A2 (en) System and method for identifying a landmark
EP3435909B1 (en) Offset reference guide for orthopedic surgical applications
US20170181753A1 (en) Automatic measuring trauma drill
JP5699092B2 (en) An instrument for mounting screws in bone tissue, and a tool for cooperating with the instrument, particularly for use in joint operations of multiple bone fragments
JPH04231947A (en) Pinning apparatus for bone
CN102014771A (en) System and method for identifying a landmark
WO2008036309A2 (en) Codified depth gauge
US20170189036A1 (en) Drilling Assembly and a Method for Preparing Graft Socket for Ligament Reconstruction
US20150119943A1 (en) Systems and methods for securing a bone plate
US20160022388A1 (en) Surgical Instruments
KR102549687B1 (en) Easy Start Cannulated Bone Screw
CN103845105A (en) Graduated guide pin for use in medical treatment
KR100941614B1 (en) Bone cutting guide used in a medical navigation system
CN1087164C (en) Bauge for the medullary cavity
CA2138473C (en) Medullary cavity template
CN106535786A (en) Retrogade reamer depth tube gage

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07838491

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07838491

Country of ref document: EP

Kind code of ref document: A2