CA1198619A - X-ray marker device - Google Patents
X-ray marker deviceInfo
- Publication number
- CA1198619A CA1198619A CA000418107A CA418107A CA1198619A CA 1198619 A CA1198619 A CA 1198619A CA 000418107 A CA000418107 A CA 000418107A CA 418107 A CA418107 A CA 418107A CA 1198619 A CA1198619 A CA 1198619A
- Authority
- CA
- Canada
- Prior art keywords
- ray
- body member
- chamber
- suction cup
- marker
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
- G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
- G03B42/04—Holders for X-ray films
- G03B42/047—Holders for X-ray films provided with marking means
Abstract
"IMPROVED X-RAY MARKER DEVICE"
Abstract Of The Disclosure An X-ray marker device. The device comprises a body member and a single suction cup attached to the bottom of the body member. X-ray opaque indicia are formed on the face of the body member. The suction cup temporarily secures the body member to a substantially flat surface, such as an X-ray film holder.
Abstract Of The Disclosure An X-ray marker device. The device comprises a body member and a single suction cup attached to the bottom of the body member. X-ray opaque indicia are formed on the face of the body member. The suction cup temporarily secures the body member to a substantially flat surface, such as an X-ray film holder.
Description
\
" IMPROVED X-RAY MARKER DEVICE' Tec~nical Field The present invention relates to devices for marking X-ray negatives, particularly, such devices which can be temporarily secured to the substantially flat surface of an X-ray film holder or plate while the ilm is being exposed.
Background An X-ray negative is prepared by exposing a sheet o X-ray sensitive film to a so~rce of 25 X-ray radiation with the object of interest placed in alig~ment between the film and the X-ray source.
The object being X-rayed absorbs the radiation non~uniormly depending` on various criteria, such as type of material and material thickness or density. The radiation which i5 transmitted through the object to the film, accordingly~ is also non-uniform and results in a pattern of ligh~
and dark areas on the developed film (negative) corresponding to the absorptivity of the o~ject.
With proper trainingl the X-ray negative can be .,, ' , ~
. ., interpreted to reveal characteristics of the object _ not normally visible to the human eye.
Although X-rays have a wide variety of industrial uses, they are pro~ably most extensively used in the field of medicineO Regardless of the application of X-rays, it is helpful in interpreting an X-ray negative to know the orientation of the object X-rayed and the orientation of the film when exposed to the radiation. It has therefore been the typical practice for X-ray technicians to place X-ray opaque objects, such as lead letters, on the X-ray film holder during exposure~ so that the "shadow"
of the letters will appear on the X-ray negative and th~reby give a permanent visual indica~ion Of film and objec~ orientation at the time the X-ray was made. It i~ also often desirable to provi~3e an indication of the X-ray technician who prepared the X-ray. ~ccordingly, lead letters or numbers
" IMPROVED X-RAY MARKER DEVICE' Tec~nical Field The present invention relates to devices for marking X-ray negatives, particularly, such devices which can be temporarily secured to the substantially flat surface of an X-ray film holder or plate while the ilm is being exposed.
Background An X-ray negative is prepared by exposing a sheet o X-ray sensitive film to a so~rce of 25 X-ray radiation with the object of interest placed in alig~ment between the film and the X-ray source.
The object being X-rayed absorbs the radiation non~uniormly depending` on various criteria, such as type of material and material thickness or density. The radiation which i5 transmitted through the object to the film, accordingly~ is also non-uniform and results in a pattern of ligh~
and dark areas on the developed film (negative) corresponding to the absorptivity of the o~ject.
With proper trainingl the X-ray negative can be .,, ' , ~
. ., interpreted to reveal characteristics of the object _ not normally visible to the human eye.
Although X-rays have a wide variety of industrial uses, they are pro~ably most extensively used in the field of medicineO Regardless of the application of X-rays, it is helpful in interpreting an X-ray negative to know the orientation of the object X-rayed and the orientation of the film when exposed to the radiation. It has therefore been the typical practice for X-ray technicians to place X-ray opaque objects, such as lead letters, on the X-ray film holder during exposure~ so that the "shadow"
of the letters will appear on the X-ray negative and th~reby give a permanent visual indica~ion Of film and objec~ orientation at the time the X-ray was made. It i~ also often desirable to provi~3e an indication of the X-ray technician who prepared the X-ray. ~ccordingly, lead letters or numbers
2~ corresponding to .individual X-ray technicians or other information can be pl aced on the film holder in the same manner described above. The use of individual lead letters and the lack of a convenient method for attaching the letters to the film holder makes this method of marking X-rays awkward since the letters can be lost or fall off the f ilm holder when the r ilm holder is in a non-horizontal orienta~ion.
The foregoin~ problems were recognized in U,S~ Patent No. 4,1~7,774. That patent discloses an X-ray marker which includes lead indi.cia to provide an indication of righ~ or left orientation and operator ini-tials. A quantity of mercury contained
The foregoin~ problems were recognized in U,S~ Patent No. 4,1~7,774. That patent discloses an X-ray marker which includes lead indi.cia to provide an indication of righ~ or left orientation and operator ini-tials. A quantity of mercury contained
3~
3~
in an a6t~ri5k-shaped cavity provides an indication of vertical or horiæontal orienta~ion. Fur~hermore, the marker device îs securable to film holders by a multiplicity of suction cups on the back of the marker device. That device is not entirely satisfac~ory because of its size~ Moreover, since multiple suction cups are used, a relatively large flat surface is required to attach the marker device thereto and adhesion of the mar~er device can bP undependable despite the multiple suction cups and corresponding surface area covered by the ~ups .
Other patents which may b~ relevant to the subject matter of the present application l~ include U~S, Pat. Nos. 1j800,218 and 1,883,791 Although those patents disclose suction cup devices, they do not relate -to X-ray marker devices, and, thereEore, are not material to the s~lbject matter of the present invention.
Summary Of The ~nvention The present invention relates to an X-ray marker which can be temporarily secured to a substantially 1at surface, such as an X-ray film holder. The X ray marker comprises a body member having a single suction ~up attached thereto to temporarily secure the body member to substantially flat surfacesO At lea5t one X-ray opaque indicum is formed in the body member~
Accordingly, it is an object of the present invention to provide an improved X~ray markerO
Another object of the present invention ,, .
_ is to provide an X-ray marker which is easily attachable to flat surfaces.
Yet another object of the present inYention is to provide an X-ray marker which S carries interchangeable indicia, A further object of the present invention is to provide an X-ray marker mountable on a hanger for convenient storage.
These and other objec~s, eatures and advantages of the present invention will become apparen~ after a review of the following detailed description of the disclosed embodiment and the appended drawing and claimsg Brief Descri~t,ion.Qf The Drawin~
~ig. 1 is a pictoriai view of a disclosed embodiment of the X-ray marker of the present invention shown attached to an X-ray film holder.
Fig. 2 is a pictorial view of the X-ray marker shown in Fig. 10 Fig. 3 is a cross-sectional view taken along the line 3-3 of the X-ray marker shown in Fig~ 2.
FigO 4 is a pictorial view of a plurality of the X-ray markers shown in Fig. 1 secured to a plurality of hangers.
Fig. 5A is a schematic view of the image left on an exposed X-ray negative by the X-ray marker shown in Fig. 1 when the film holder is exposed in a vertical posi.tion.
Fig. 5~ is a sch~matic view of the imag~
left on an exposed X-ray nesative by the X-ray marker shown in FigO 1 when the film holder is exposed in a horiziontal position.
Fig. 6 is a top plan view of the x~ray marker shown in Fig. 2 with a card inserted into the edge opening shown partially in dotted line.
Detailed Description Of The Disclosed Embodiment ~ eferr~ing now to the drawing in which like numbers indicate like elements throughout the several ~iews, it will be seen that there is an X-ray marker ~0 in accordance with the present invention temporarily secured to a substantially 1at surface 12 of a conventional X-ray film holder 14. The X-ray marker 10 includes a disc-shaped body member 16 having a face 18, an edge 20 and a bottom 22 which define a centrally located chamber 24. At~ached to the bottom 22 of the body member 16 is a single conventional suction cup 26. The diameter o~ the body member 16 is approximately equal to the diameter of the suction cup 26 so that the size of the X ray marker is minimized.
The curvature of the suction cup 26 is directed away from the bottom 22 of the body member 16 so that an annular groove 28 is formed between the body member and the suction cup. The groove 28 is sized and shaped to receive a hanger member, such as a heavy gauge wire 30 (Fig. 43.
A plurality of such wires 30 are shown attached to a board 32. The wire 30 is bent so that a plurality of loops 34 each having an open end 36 are provided. Thus, it will be appreciated by those skilled in the art that the X~ray marker 10 can be slipped into a loop 34 through the open end 36 thereof and the wire 3D received in the groove 28. The wire 10 is spaced outwardly from the surface o the board 32 a distance approximately 3~
~ - ~ ~
_ equal to or 51 ightly greater than the distance from the bottom surface 22 to tne bottom 34 of the suction cup 26 so that when the wirP is received in the groove 28, the suction cup 26 is captured between the wire and the surface of the board. To remove the X-ray marker 70 from the wire 30, the wire is disengaged from the groove by merely slipping it out the open end 36 of the loop 34, Thus, the X-ray marker 10 can be conveniently stored and retrieved from the hangers on the board 32, when not actually applied to a film holder 14.
Formed in the face 18 of the body member 16 is an X-ray opaque indicia, such hS the letter "L" 38 or the letter "R" which may stand for "left'l or "right~" The indicia can conveniently be made of lead, which is both relatively easy to form into a desired ~shape and which is also substantially X-r ay opaque Disposed within the chamber 24 is a ball 40 which is also made o an X-ray opaque material, such as lead. The ball 40 is of a size such that it is free to move about the chamber 24. The botto~ 22 of the body member 16 is sloped downwardly from the edges 20 toward ~he central portion ~hereof~ The bottom of the chamber 24 therefore has a cPntrally located depression toward which the ball 40 will roll when the marker 10 is in a horizontal position. When the marker 10 is in a non-horizontal position, the effect of gravity on the ball 40 will displace it from the central portion toward the edges 20~
Formed in the edge 20 of the body member 16 is a slit 42. The slit 42 extends through the edge 20 into the chamber 24. The slit 42 is sized ., g and shaped to receive a tab or card 44 having an X-ray opaque indiciar such as a "K" 46y prin~ed thereon. The slit, however, is not large enough to permit the ball 40 to pass therethrGugh. When the card 40 is inserted into the slot, as shown in Fi~.
6, a second X-ray opaque indicia can be orien~ed adjacent the first indicia formed in the face 180 Operation of the X-ray marker device will now be considered. A piece of X ray film (not shown) is placed in the X-ray film holder 14 in the conventional manner. One of the X-ray markers 10 is removed from the hanger board 32 by slipping it out of the open end 36 of the loop 34. The X-ray marker 10 is then placed on the flat surface 12 of the film holder 14 ih a desired location, such as the lower right hand corner, with the suction cup 26 in contact therewith. The X-ray marker 10 is then pushed downwardly toward the fi1m holder 14 so that the suction cup 26 is slightly flatten~d. When the X-ray marker 10 is released, a partial vacuum is created between the suction cup 26 and the surface 12 of the film holder 14, thereby temporarily attaching the X-ray marker thereto. It has been found that the use of only a single suction cup, as in the present X-ray marker, provides signi~icantly improved adhesion of the marker to th~ X-ray film holder compared with prior art markers which rely on multiple suctîon cups.
It is believed that the several suction cups of multiple-cup markers can become misaligned or distor~ed as the marker is pressed against the f ilm holder, with the result that the misaligned or distorted suction cups produce forces tendency to dislodge adjacent suction cups and weaken the , securement of the overall marker to the film holder.
The X-ray film holder 14 can then be used in the normal fashionO That is, the holder can be placed in alignment with an object to be X-rayed and a source of X-rays so that the shadow of th~
ob~ect will fall on the X-ray film. When the film has been th~sly exposed to X-rays and properly developed not only will the shadow of the object X-rayed be visible on the film, but the shadow of.
the X-ray opaque portions of the X-ray marker will also be visible. Specifically, the indicia on the face 18 of the X ray marker will be visible as will the bal 1 4 O .
.lS Fig. 5A shows the image created by the X-ray marker on a developed film. The image of an "L" 38l and the image of a ball 40' are left on the - film, The position of the film holder 14 when it was exposed to the X-rays was substantially vertical, therefore the ball 40 rolled toward the lower edge 20 of the chamber 24 thereby leaving its image 40' displaeed from the center of the X~ray image below the "L" 38'. Fig. 5B shows the image left on the film when exposed in a substantia1ly horizontal position~ Note that in this case the image of the ball 40' is centrally located.
. If it is desired that an additional indicia be provided on the film, such as the initial of the X-ray technician taking the X-ray, 3~ the card 44 bearing a second X-ray opaque indicia, such as a "K" 46, can be slipped into the slot 42 in the edge of the body member 16 of the X-ray marker 10., The image left on the film in such a case includes not only the images of the first _ indicia 38 and the ball 40, but also the imag~ of the second indicia 46~
When the X~ray has been exposed t the X-ray marker 10 can be removed from the surface 12 of the film holder 14 by grasping the body member 16 and pulling sufficiently strongly to overcome the partial vacuum between the suction cup 26 and the surface of the film holder~ The X-ray marker 10 can then be conveniently.stored by slipping it through the open end 36 o the loop 34 so that the wire 30 engages the groove 28 between the suction cup 26 and the body member 16.
It should be understood, of course, tha~
the foregoing relates only to preferred embodiments of the presen~ invention and that numerous mod if ications or al terations may be made therein without departing from the spirit and scope of the . invention as set forth in the appended claims.
~5
3~
in an a6t~ri5k-shaped cavity provides an indication of vertical or horiæontal orienta~ion. Fur~hermore, the marker device îs securable to film holders by a multiplicity of suction cups on the back of the marker device. That device is not entirely satisfac~ory because of its size~ Moreover, since multiple suction cups are used, a relatively large flat surface is required to attach the marker device thereto and adhesion of the mar~er device can bP undependable despite the multiple suction cups and corresponding surface area covered by the ~ups .
Other patents which may b~ relevant to the subject matter of the present application l~ include U~S, Pat. Nos. 1j800,218 and 1,883,791 Although those patents disclose suction cup devices, they do not relate -to X-ray marker devices, and, thereEore, are not material to the s~lbject matter of the present invention.
Summary Of The ~nvention The present invention relates to an X-ray marker which can be temporarily secured to a substantially 1at surface, such as an X-ray film holder. The X ray marker comprises a body member having a single suction ~up attached thereto to temporarily secure the body member to substantially flat surfacesO At lea5t one X-ray opaque indicum is formed in the body member~
Accordingly, it is an object of the present invention to provide an improved X~ray markerO
Another object of the present invention ,, .
_ is to provide an X-ray marker which is easily attachable to flat surfaces.
Yet another object of the present inYention is to provide an X-ray marker which S carries interchangeable indicia, A further object of the present invention is to provide an X-ray marker mountable on a hanger for convenient storage.
These and other objec~s, eatures and advantages of the present invention will become apparen~ after a review of the following detailed description of the disclosed embodiment and the appended drawing and claimsg Brief Descri~t,ion.Qf The Drawin~
~ig. 1 is a pictoriai view of a disclosed embodiment of the X-ray marker of the present invention shown attached to an X-ray film holder.
Fig. 2 is a pictorial view of the X-ray marker shown in Fig. 10 Fig. 3 is a cross-sectional view taken along the line 3-3 of the X-ray marker shown in Fig~ 2.
FigO 4 is a pictorial view of a plurality of the X-ray markers shown in Fig. 1 secured to a plurality of hangers.
Fig. 5A is a schematic view of the image left on an exposed X-ray negative by the X-ray marker shown in Fig. 1 when the film holder is exposed in a vertical posi.tion.
Fig. 5~ is a sch~matic view of the imag~
left on an exposed X-ray nesative by the X-ray marker shown in FigO 1 when the film holder is exposed in a horiziontal position.
Fig. 6 is a top plan view of the x~ray marker shown in Fig. 2 with a card inserted into the edge opening shown partially in dotted line.
Detailed Description Of The Disclosed Embodiment ~ eferr~ing now to the drawing in which like numbers indicate like elements throughout the several ~iews, it will be seen that there is an X-ray marker ~0 in accordance with the present invention temporarily secured to a substantially 1at surface 12 of a conventional X-ray film holder 14. The X-ray marker 10 includes a disc-shaped body member 16 having a face 18, an edge 20 and a bottom 22 which define a centrally located chamber 24. At~ached to the bottom 22 of the body member 16 is a single conventional suction cup 26. The diameter o~ the body member 16 is approximately equal to the diameter of the suction cup 26 so that the size of the X ray marker is minimized.
The curvature of the suction cup 26 is directed away from the bottom 22 of the body member 16 so that an annular groove 28 is formed between the body member and the suction cup. The groove 28 is sized and shaped to receive a hanger member, such as a heavy gauge wire 30 (Fig. 43.
A plurality of such wires 30 are shown attached to a board 32. The wire 30 is bent so that a plurality of loops 34 each having an open end 36 are provided. Thus, it will be appreciated by those skilled in the art that the X~ray marker 10 can be slipped into a loop 34 through the open end 36 thereof and the wire 3D received in the groove 28. The wire 10 is spaced outwardly from the surface o the board 32 a distance approximately 3~
~ - ~ ~
_ equal to or 51 ightly greater than the distance from the bottom surface 22 to tne bottom 34 of the suction cup 26 so that when the wirP is received in the groove 28, the suction cup 26 is captured between the wire and the surface of the board. To remove the X-ray marker 70 from the wire 30, the wire is disengaged from the groove by merely slipping it out the open end 36 of the loop 34, Thus, the X-ray marker 10 can be conveniently stored and retrieved from the hangers on the board 32, when not actually applied to a film holder 14.
Formed in the face 18 of the body member 16 is an X-ray opaque indicia, such hS the letter "L" 38 or the letter "R" which may stand for "left'l or "right~" The indicia can conveniently be made of lead, which is both relatively easy to form into a desired ~shape and which is also substantially X-r ay opaque Disposed within the chamber 24 is a ball 40 which is also made o an X-ray opaque material, such as lead. The ball 40 is of a size such that it is free to move about the chamber 24. The botto~ 22 of the body member 16 is sloped downwardly from the edges 20 toward ~he central portion ~hereof~ The bottom of the chamber 24 therefore has a cPntrally located depression toward which the ball 40 will roll when the marker 10 is in a horizontal position. When the marker 10 is in a non-horizontal position, the effect of gravity on the ball 40 will displace it from the central portion toward the edges 20~
Formed in the edge 20 of the body member 16 is a slit 42. The slit 42 extends through the edge 20 into the chamber 24. The slit 42 is sized ., g and shaped to receive a tab or card 44 having an X-ray opaque indiciar such as a "K" 46y prin~ed thereon. The slit, however, is not large enough to permit the ball 40 to pass therethrGugh. When the card 40 is inserted into the slot, as shown in Fi~.
6, a second X-ray opaque indicia can be orien~ed adjacent the first indicia formed in the face 180 Operation of the X-ray marker device will now be considered. A piece of X ray film (not shown) is placed in the X-ray film holder 14 in the conventional manner. One of the X-ray markers 10 is removed from the hanger board 32 by slipping it out of the open end 36 of the loop 34. The X-ray marker 10 is then placed on the flat surface 12 of the film holder 14 ih a desired location, such as the lower right hand corner, with the suction cup 26 in contact therewith. The X-ray marker 10 is then pushed downwardly toward the fi1m holder 14 so that the suction cup 26 is slightly flatten~d. When the X-ray marker 10 is released, a partial vacuum is created between the suction cup 26 and the surface 12 of the film holder 14, thereby temporarily attaching the X-ray marker thereto. It has been found that the use of only a single suction cup, as in the present X-ray marker, provides signi~icantly improved adhesion of the marker to th~ X-ray film holder compared with prior art markers which rely on multiple suctîon cups.
It is believed that the several suction cups of multiple-cup markers can become misaligned or distor~ed as the marker is pressed against the f ilm holder, with the result that the misaligned or distorted suction cups produce forces tendency to dislodge adjacent suction cups and weaken the , securement of the overall marker to the film holder.
The X-ray film holder 14 can then be used in the normal fashionO That is, the holder can be placed in alignment with an object to be X-rayed and a source of X-rays so that the shadow of th~
ob~ect will fall on the X-ray film. When the film has been th~sly exposed to X-rays and properly developed not only will the shadow of the object X-rayed be visible on the film, but the shadow of.
the X-ray opaque portions of the X-ray marker will also be visible. Specifically, the indicia on the face 18 of the X ray marker will be visible as will the bal 1 4 O .
.lS Fig. 5A shows the image created by the X-ray marker on a developed film. The image of an "L" 38l and the image of a ball 40' are left on the - film, The position of the film holder 14 when it was exposed to the X-rays was substantially vertical, therefore the ball 40 rolled toward the lower edge 20 of the chamber 24 thereby leaving its image 40' displaeed from the center of the X~ray image below the "L" 38'. Fig. 5B shows the image left on the film when exposed in a substantia1ly horizontal position~ Note that in this case the image of the ball 40' is centrally located.
. If it is desired that an additional indicia be provided on the film, such as the initial of the X-ray technician taking the X-ray, 3~ the card 44 bearing a second X-ray opaque indicia, such as a "K" 46, can be slipped into the slot 42 in the edge of the body member 16 of the X-ray marker 10., The image left on the film in such a case includes not only the images of the first _ indicia 38 and the ball 40, but also the imag~ of the second indicia 46~
When the X~ray has been exposed t the X-ray marker 10 can be removed from the surface 12 of the film holder 14 by grasping the body member 16 and pulling sufficiently strongly to overcome the partial vacuum between the suction cup 26 and the surface of the film holder~ The X-ray marker 10 can then be conveniently.stored by slipping it through the open end 36 o the loop 34 so that the wire 30 engages the groove 28 between the suction cup 26 and the body member 16.
It should be understood, of course, tha~
the foregoing relates only to preferred embodiments of the presen~ invention and that numerous mod if ications or al terations may be made therein without departing from the spirit and scope of the . invention as set forth in the appended claims.
~5
Claims (3)
1. An X-ray marker device comprising:
a body member;
a single suction cup attached to said body member to temporarily secure said body member to a substantially flat surface; and an X-ray opaque indicum formed in said body member.
a body member;
a single suction cup attached to said body member to temporarily secure said body member to a substantially flat surface; and an X-ray opaque indicum formed in said body member.
2. An X ray marker device comprising:
a body member defining a chamber therein, said body member having a face, a bottom and an edge;
a single suction cup attached to said bottom of said body member for temporarily securing said body member to a substantially flat surface;
a first X-ray opaque indicia formed on said face of said body members;
said edge of said body member defining an opening into said chamber, said opening being sized and shaped to selectively receive a second X-ray opaque indicia at a location adjacent said first indicia; and an annular groove formed between said body member and said suction cup for selectively receiving a hanger member.
a body member defining a chamber therein, said body member having a face, a bottom and an edge;
a single suction cup attached to said bottom of said body member for temporarily securing said body member to a substantially flat surface;
a first X-ray opaque indicia formed on said face of said body members;
said edge of said body member defining an opening into said chamber, said opening being sized and shaped to selectively receive a second X-ray opaque indicia at a location adjacent said first indicia; and an annular groove formed between said body member and said suction cup for selectively receiving a hanger member.
3. The device of Claim 2, further comprising a ball formed of X-ray opaque material disposed in said chamber, said ball being of a size so that it is free to move within said chamber and wherein the portion of the body member defining said chamber adjacent said bottom is conically shaped such that the bottom of said chamber slopes from said edge to a central portion of said chamber, so that the position of the ball in said chamber depends on whether said body member is oriented horizontally or vertically.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/332,508 US4426723A (en) | 1981-12-21 | 1981-12-21 | X-Ray marker device |
| US332,508 | 1989-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1198619A true CA1198619A (en) | 1985-12-31 |
Family
ID=23298530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000418107A Expired CA1198619A (en) | 1981-12-21 | 1982-12-20 | X-ray marker device |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4426723A (en) |
| CA (1) | CA1198619A (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4698836A (en) * | 1984-10-24 | 1987-10-06 | Minasian John L | Means and techniques useful in marking X-ray film |
| US4953193A (en) * | 1988-08-25 | 1990-08-28 | Robinson Norman L | Fastening combination having special utility in affixing an X-ray marking device to a cassette adapted to hold X-ray film |
| US5086445A (en) * | 1990-09-13 | 1992-02-04 | E. I. Du Pont De Nemours And Company | Method and apparatus for referencing a cassette and/or an intensifying screen on a radiograph |
| FR2679360B1 (en) * | 1991-07-19 | 1995-09-15 | Gen Electric Cgr | INDICATION MARKING DEVICE. |
| US5592527A (en) * | 1993-01-19 | 1997-01-07 | Ray; Michael A. | Identification marker for x-ray film with carrying case |
| US5714215A (en) | 1994-03-14 | 1998-02-03 | Sheffield; Douglas | Unitary flexible information presentation board having self-suction |
| US5640438A (en) * | 1996-01-29 | 1997-06-17 | Sensiquest, Inc. | Radiographic film marker assembly |
| US6160870A (en) * | 1998-11-27 | 2000-12-12 | Jacobson; Donald R | X-ray markers |
| GB2363859A (en) * | 2000-03-16 | 2002-01-09 | Hem Chandra Dutta | X-ray film safety feature |
| US20040116802A1 (en) * | 2002-10-05 | 2004-06-17 | Jessop Precision Products, Inc. | Medical imaging marker |
| US7092492B2 (en) * | 2003-11-24 | 2006-08-15 | Regents Of The University Of Michigan | Universal radiologic patient positioning marker |
| US20080035818A1 (en) * | 2006-07-24 | 2008-02-14 | We-Flex, Llc | Portable item holder and method for using the holder |
| US20080017769A1 (en) * | 2006-07-24 | 2008-01-24 | We-Flex, Llc | Vacuum mountable display device |
| US7740221B2 (en) * | 2006-07-24 | 2010-06-22 | Sheffield Jr Douglas M | Suction-mountable display device having a periphery and a bend adjacent the periphery |
| US7641167B2 (en) * | 2006-07-24 | 2010-01-05 | We-Flex, Llc | Portable item holder, display device, and aromatic device |
| US20080087955A1 (en) * | 2006-10-17 | 2008-04-17 | We-Flex, Llc | Suction-Mountable Display Device |
| US20080105760A1 (en) * | 2006-11-08 | 2008-05-08 | We-Flex, Llc | Suction-Mountable Aromatic Device and Method for Using the Same |
| US20080134421A1 (en) * | 2006-12-08 | 2008-06-12 | We-Flex, Llc | Plunger device |
| USD639952S1 (en) | 2010-05-26 | 2011-06-14 | Ruth Elizabeth Dutschmann | X-ray marker |
| USD739022S1 (en) | 2014-10-23 | 2015-09-15 | Ruth Elizabeth Dutschmann | X-ray marker |
| USD737977S1 (en) | 2014-12-01 | 2015-09-01 | Ruth Elizabeth Dutschmann | X-ray marker |
| GB2533956A (en) * | 2015-01-08 | 2016-07-13 | Louise Glaysher Emma | Suction anatomical side marker (SASM) |
| US9588412B1 (en) | 2015-02-10 | 2017-03-07 | Jerusalmi Streete | X-ray film image marker |
| US11278367B1 (en) * | 2019-10-31 | 2022-03-22 | The United States Of America As Represented By The Secretary Of The Navy | Portable and collapsible apparatus for holding fiducial markers |
-
1981
- 1981-12-21 US US06/332,508 patent/US4426723A/en not_active Expired - Fee Related
-
1982
- 1982-12-20 CA CA000418107A patent/CA1198619A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4426723A (en) | 1984-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |