JPH0354726Y2 - - Google Patents
Info
- Publication number
- JPH0354726Y2 JPH0354726Y2 JP1984158179U JP15817984U JPH0354726Y2 JP H0354726 Y2 JPH0354726 Y2 JP H0354726Y2 JP 1984158179 U JP1984158179 U JP 1984158179U JP 15817984 U JP15817984 U JP 15817984U JP H0354726 Y2 JPH0354726 Y2 JP H0354726Y2
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- head
- lesion
- rod
- puncture needle
- 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
- 230000003902 lesion Effects 0.000 claims description 19
- 238000003325 tomography Methods 0.000 claims description 8
- 210000004556 brain Anatomy 0.000 claims description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000001356 surgical procedure Methods 0.000 claims description 3
- 238000002591 computed tomography Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 7
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 206010018852 Haematoma Diseases 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000414 obstructive effect Effects 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はCTスキヤナを用いた定位脳手術用病
変部測定器に関する。[Detailed description of the invention] [Industrial field of application] The present invention relates to a lesion measurement device for stereotactic brain surgery using a CT scanner.
CT（computed tomography）スキヤナを用い
た定位脳手術装置はベツド上に仰臥した患者の頭
部をベツド上の頭部固定装置に固定させ、CTス
キヤナにより頭部の輪切り状Ｘ線断層撮影を行つ
て病変部即ち標的の位置を計測し、対いで頭部固
定装置に穿刺針支持装置を取付けこの穿刺針の先
端が正しく標的に達するよう針調節機構を上記計
測値に応じた調節量をもつて調節し、これによつ
て穿刺針の先端が標的に一致するはずであるがこ
の位置決めを再度断層撮影によつて確認してから
穿刺針により脳内の例えば血腫を吸引除去する装
置である。
Stereotactic neurosurgery equipment using a CT (computed tomography) scanner fixes the patient's head supine on a bed to a head fixation device on the bed, and performs slice-shaped X-ray tomography of the head using a CT scanner. The position of the lesion, that is, the target, is measured, and the puncture needle support device is attached to the head fixation device, and the needle adjustment mechanism is adjusted by an adjustment amount according to the above measurement value so that the tip of the puncture needle correctly reaches the target. However, this should align the tip of the puncture needle with the target, but the device confirms this positioning again by tomography and then uses the puncture needle to suction out, for example, a hematoma in the brain.
この装置において標的計測には測定器が用いら
れる。この測定器は枠状の測定棒を有していて、
これを取付けた状態で断層撮影されるためマーク
点として標的と共に画像に表われ、標的との相対
位置データを与える。穿刺針支持装置は穿刺針を
Ｘ，Ｙ，Ｚ軸方向へ移動調節できるように支持す
る構成になつていてその調節量は上記相対位置デ
ータに従つて決められる。 In this device, a measuring device is used for target measurement. This measuring device has a frame-shaped measuring rod,
Since a tomographic image is taken with this attached, it appears as a mark point in the image along with the target, and provides data on the relative position with the target. The puncture needle support device is configured to support the puncture needle so that it can be moved and adjusted in the X, Y, and Z axis directions, and the amount of adjustment is determined in accordance with the above-mentioned relative position data.
従来の測定器の測定棒は金属例えばステンレス
材により形成されているため、標的計測のための
CTスキヤナによる断層撮影時にＸ線に対して妨
害物、勿論妨害物となつて画像にマーク点として
表われることが必要であるが、それが過度な妨害
物となり画像が不鮮明になることがある。
The measuring rod of conventional measuring instruments is made of metal, such as stainless steel, so it is difficult to measure the target.
During tomography using a CT scanner, objects that interfere with X-rays, of course, need to appear as mark points on the image, but they may become excessively obstructive and cause the image to become unclear.
本考案は上記の欠点を除去し、病変部の位置計
測のためのCTスキヤナにによる断層撮影時にＸ
線撮影を妨害してしまうことを防止できる定位脳
手術用病変部測定器を提供することを目的とす
る。
The present invention eliminates the above-mentioned drawbacks and makes it possible to use
It is an object of the present invention to provide a lesion measuring instrument for stereotactic brain surgery that can prevent radiography from being obstructed.
測定棒をカーボン或いはセラミツクにより直径
２〜mmの丸棒状に形成し、この測定棒を頭部固定
装置に取付けられる台座に患者の頭頂方向に延び
且つ三角形の二辺を構成するように設けたことを
特徴とするもので、これにより測定棒がＸ線に対
して過度な妨害物とならず、鮮明な画像を得るこ
とができると共に、その画像に測定棒を鮮明なマ
ーク点として表わすことができるようにしたもの
である。
A measuring rod is formed from carbon or ceramic into a round rod shape with a diameter of 2 to mm, and this measuring rod is installed on a pedestal attached to a head fixation device so as to extend in the direction of the top of the patient's head and form two sides of a triangle. As a result, the measuring rod does not become an excessive obstruction to X-rays, making it possible to obtain a clear image, and also making it possible to represent the measuring rod as a clear mark point on the image. This is how it was done.
以下本考案の一実施例について図面を参照しな
がら説明する。固定装置１は第１図に示すように
ベツドに仰臥した患者の頭部を固定するためのも
のであり、ベツドに固定されHz本体フレーム２か
らなる。この本体フレーム２は第３図に示すよう
に内側が円形で外側が略四角形の枠状をなしたア
ルミ製のもので、その下辺には後頭部を仮支えす
るアクリル製の頭受板３が設けられ、また四隅部
分に予め形成してある各ロツド固着部４には頭部
固定部材５の棒状脚部６が挿入され、これをねじ
締手段４ａによつて適宜の挿入量位置に固定でき
るようになつている。また本体フレーム２の上辺
及び右辺には４個の病変部測定器７が着脱可能に
取付けられるようになつている。この測定器７
は、第２図に示すように、台座８に二本の測定棒
９及び１０を患者の頭頂方向に延び且つ二等辺三
角形の二つの等辺を構成するように取着してい
る。尚、二等辺三角形の高さＨは底辺の長さＬの
２倍に設定されている。また台座８には測定棒９
及び１０が構成する二等辺三角形の中心線を通る
中心棒１１を取着すると共に、この中心棒１１と
平行で且つ二等辺三角形の底辺の両端を通る線に
一致するようにして二本の平行棒１２及び１３を
取着している。尚、平行棒１２及び１３の間隔寸
法は10cmに設定されている。そして、測定棒９及
び１０、中心棒１１、平行棒１２及び１３の各先
端部を一本の連結棒１４に取着している。更に台
座８には本体フレーム２に固着したピン１５に嵌
合によつて固定される取付キヤツプ１６が設けら
れている。斯様な測定器７は、取付キヤツプ１６
をピン１５に嵌着することによつて本体フレーム
２の上辺及び右辺に取付けたとき、各測定器７に
おいて測定棒９，１０及び中心棒１１の交点Ｍが
本体フレーム２中央の基準点Ｇを通るＸ軸上及び
Ｙ軸上に位置するように構成されている。そし
て、以上の構成において、測定棒９，１０、中心
棒１１及び平行棒１２，１３はカーボンフアイバ
ーにより形成され、またＸ線の散乱を少なくする
と共に画像上に直径0.5〜１mmのマーク点として
表われるように外径２〜３mmの丸棒状に形成して
いる。
An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the fixing device 1 is for fixing the head of a patient lying supine on the bed, and is fixed to the bed and consists of a Hz body frame 2. As shown in Fig. 3, the main body frame 2 is made of aluminum and has a frame shape with a circular inner side and a substantially square outer side, and an acrylic head support plate 3 is provided on the lower side of the frame to temporarily support the back of the head. The rod-shaped leg portions 6 of the head fixing member 5 are inserted into the respective rod fixing portions 4 preformed at the four corners, and the rod-shaped leg portions 6 of the head fixing member 5 can be fixed at appropriate insertion positions by the screw tightening means 4a. It's getting old. Furthermore, four lesion measuring instruments 7 are detachably attached to the upper and right sides of the main body frame 2. This measuring device 7
As shown in FIG. 2, two measuring rods 9 and 10 are attached to a base 8 so as to extend toward the top of the patient's head and form two equal sides of an isosceles triangle. Note that the height H of the isosceles triangle is set to twice the length L of the base. Also, on the pedestal 8 there is a measuring rod 9.
A center rod 11 passing through the center line of the isosceles triangle constituted by 12 and 13 are attached. Note that the distance between the parallel bars 12 and 13 is set to 10 cm. The ends of the measuring rods 9 and 10, the center rod 11, and the parallel rods 12 and 13 are attached to a single connecting rod 14. Further, the pedestal 8 is provided with a mounting cap 16 which is fixed by fitting onto a pin 15 fixed to the main body frame 2. Such a measuring device 7 has a mounting cap 16
When attached to the upper and right sides of the main body frame 2 by fitting them into the pins 15, the intersection point M of the measuring rods 9, 10 and the center rod 11 of each measuring device 7 points to the reference point G at the center of the main body frame 2. It is configured to be located on the X-axis and Y-axis passing through it. In the above configuration, the measuring rods 9 and 10, the center rod 11, and the parallel rods 12 and 13 are made of carbon fiber, which reduces scattering of X-rays and appears as marked points with a diameter of 0.5 to 1 mm on the image. It is formed into a round bar shape with an outer diameter of 2 to 3 mm.
一方、第３図において、１７は穿刺針支持装置
であり、コ字状の可動枠１８と摺動装置１９とを
回動部２０にて第３図中矢印２１方向に回動調節
可能に連結して成る。一方、２２は摺動装置１９
の第１の摺動部材であり、これは前記本体フレー
ム２の両側に設けたレール部材２３に沿いＹ軸方
向即ち上下動自在であり、その所望の高さ位置に
摘みねじ手段２４によつて固定化できるようにな
つている。尚、２５は図示を省略しているが摺動
部材２２を上下動調節させるためにレール部材２
３に形成されたラツクに噛合するラツクピニオン
に直結された回動操作摘みである。この摺動部材
２２の上面にはレール溝２６が設けられ、このレ
ール溝２６に前記回動部２０を支持した脚部材２
７の下端が患者体軸方向であるＺ軸方向に摺動自
在に嵌合され、その適宜の摺動位置に摘みねじ手
段２８によつて固定化されるようになつている。
２９は穿刺針ホルダーであり、これは円弧状レー
ル部材３０に円弧移動可能に且つ適宜の位置に固
定化できるように設けられ、またその円弧状レー
ル部材３０はコ字状の可動枠１８の共通辺に体軸
に対して直角な左右方向、即ちＸ軸方向に移動可
能で且つ適宜の位置に固定化可能な第２の摺動部
材３１に設けられている。 On the other hand, in FIG. 3, reference numeral 17 denotes a puncture needle support device, which connects a U-shaped movable frame 18 and a sliding device 19 so as to be rotatably adjustable in the direction of arrow 21 in FIG. It consists of On the other hand, 22 is a sliding device 19
This is a first sliding member which is movable in the Y-axis direction, that is, up and down, along rail members 23 provided on both sides of the main body frame 2, and is moved to a desired height position by means of a thumbscrew means 24. It has become possible to fix it. Although not shown, 25 is a rail member 2 for adjusting the vertical movement of the sliding member 22.
This is a rotary operation knob that is directly connected to a rack pinion that meshes with the rack formed in 3. A rail groove 26 is provided on the upper surface of this sliding member 22, and the leg member 2 supports the rotating part 20 in this rail groove 26.
The lower end of 7 is fitted so as to be slidable in the Z-axis direction, which is the axial direction of the patient's body, and is fixed at an appropriate sliding position by a thumbscrew means 28.
Reference numeral 29 denotes a puncture needle holder, which is provided on an arcuate rail member 30 so as to be movable in an arc and fixed at an appropriate position. A second sliding member 31 is provided on the side, which is movable in the left-right direction perpendicular to the body axis, that is, in the X-axis direction, and which can be fixed at an appropriate position.
次に上記構成の作用について説明する。穿刺針
支持装置１７は穿刺針ホルダー２９に保持された
穿刺針３２（第３図に２点鎖線で図示）を所定量
進出させるとその先端が脳内の標的に正しく達す
るようにするために用いられる。これは回動部２
０の回動中心に設けられたマーク部材２０ａ，２
０ａ間を結ぶ直線（目視によつて確認）と穿刺針
３２の先端とが交差する点（以下これを単に仮想
標点と称す）を脳内標点とに一致させるようにし
ておけば、穿刺針３２を仮想標点形成時に得られ
た設定量進出させるのみでその先端が自ずと標点
（病変部）に達せられる原理のものである。仮想
標点のＸ，Ｙ，Ｚ座標は測定器７を本体フレーム
２に装着して行うCTスキヤナによる断層撮影画
像を実測することによつて与えられる。 Next, the operation of the above configuration will be explained. The puncture needle support device 17 is used to ensure that when the puncture needle 32 (indicated by the two-dot chain line in FIG. 3) held by the puncture needle holder 29 advances a predetermined amount, the tip thereof correctly reaches the target in the brain. It will be done. This is rotating part 2
Mark members 20a, 2 provided at the rotation center of 0
If the point where the straight line connecting 0a (confirmed visually) and the tip of the puncture needle 32 intersect (hereinafter simply referred to as the virtual reference point) matches the intracerebral reference point, the puncture will be easier. This principle is based on the principle that the tip of the needle 32 can reach the target point (lesioned part) by itself simply by advancing the needle 32 by the set amount obtained when forming the virtual target point. The X, Y, and Z coordinates of the virtual reference point are given by actually measuring a tomographic image using a CT scanner using a measuring device 7 attached to the main body frame 2.
即ち、本体フレーム２の上辺及び右辺に測定器
７を取付けて断層撮影を行なうと、その画像には
測定棒９，１０、中心棒１１、平行棒１２，１３
が直径0.5〜１mmの小さなマーク点として表われ
る。第４図は病変部Ｔが表われた断層撮影画像を
示すものであるが、この撮影画像から病変部Ｔの
Ｘ，Ｙ，Ｚ座標を求めるには、まず平行棒１２，
１３のマーク点１２′，１３′間の距離Ａを実測し
てこの画像の縮尺率を求める。仮にＡが５cmであ
つたとすると、平行棒１２，１３間の距離の実寸
法は10cmであるから、本画像の縮尺率は１／２と
いうことなる。次に左右両側の中心棒１１のマー
ク点１１′間を結ぶ直線Ｂと上下両側の中心棒１
１のマーク点１１′間を結ぶ直線Ｃとの交点Ｄは
Ｚ軸上に存在するから、各直線Ｂ，Ｃから病変部
Ｔまでの距離ｘ，ｙを実測し、その実測値を縮尺
率で除けば、その値が基準点Ｇから病変部Ｔまで
のＸ，Ｙ軸方向の実距離となる。また、基準点Ｇ
から病変部Ｚまでの軸方向の実距離を求めるに
は、まず例えば右側の両測定棒９，１０のマーク
点９′，１０′間の距離Ｅを実測する。この距離Ｅ
は両測定棒９，１０が構成する三角形と相似形の
三角形の底辺の長さに相当し、その三角形の高さ
は本実施例では底辺の２倍に設定されているか
ら、Ｅを２倍すればその値が基準点Ｇから病変部
ＴまでのＺ軸方向の実距離となる。 That is, when tomography is performed with the measuring device 7 attached to the upper and right sides of the main body frame 2, the image includes the measuring rods 9 and 10, the center rod 11, and the parallel rods 12 and 13.
appears as a small mark point with a diameter of 0.5 to 1 mm. FIG. 4 shows a tomographic image in which the lesion T appears. In order to determine the X, Y, and Z coordinates of the lesion T from this photographed image, first the parallel bars 12,
The distance A between the 13 mark points 12' and 13' is actually measured to determine the scale factor of this image. Assuming that A is 5 cm, the actual distance between the parallel bars 12 and 13 is 10 cm, so the scale ratio of the main image is 1/2. Next, the straight line B connecting the mark points 11' of the center rods 11 on both the left and right sides and the center rods 1 on both the upper and lower sides
Since the intersection D with the straight line C connecting between the mark points 11' of 1 exists on the Z-axis, the distances x and y from each straight line B and C to the lesion T are actually measured, and the measured values are calculated using the scale factor. Otherwise, the value becomes the actual distance from the reference point G to the lesion T in the X and Y axis directions. Also, the reference point G
To determine the actual distance in the axial direction from to the lesion Z, first, for example, the distance E between the mark points 9' and 10' of the right measuring rods 9 and 10 is actually measured. This distance E
corresponds to the length of the base of a triangle similar to the triangle formed by both measuring rods 9 and 10, and the height of the triangle is set to twice the base in this embodiment, so E is doubled. Then, this value becomes the actual distance from the reference point G to the lesion T in the Z-axis direction.
このようにして病変部ＴのＸ，Ｙ，Ｚ軸上の位
置を求めた後、測定器７を取外して穿刺針支持装
置１７を本位フレーム２に装着し、そして求めら
れた座標計測値に従い、まず第１の摺動装置２２
によつてＹ軸方向位置を定めると共に、脚部材２
７によつてＺ軸方向位置を定める。この状態で再
確認のためのCTスキヤナによる断層撮影を行い、
マーク部材２０ａの点状画像が病変部Ｔの画像内
に位置していることを確認し、この後に前記座標
計測値によつて第２の摺動部材３１を摺動して穿
刺針ホルダー２９のＸ軸方向位置を定め、この後
穿刺針３２を前記設定量進出させればその先端が
脳内の病変部Ｔに正確に達することになる。尚、
可動枠１８が回動部２０にて回動できるように、
及び穿刺針ホルダー２９が円弧状レール部材３０
上で円弧移動できるようにしている理由は穿刺針
３２の脳内への侵入角度を選択できるようにする
ためである。 After determining the position of the lesion T on the X, Y, and Z axes in this manner, the measuring device 7 is removed, the puncture needle support device 17 is attached to the main frame 2, and according to the determined coordinate measurement values, First, the first sliding device 22
The position in the Y-axis direction is determined by the leg member 2.
7 determines the position in the Z-axis direction. In this state, we performed tomography using a CT scanner for reconfirmation.
After confirming that the dotted image of the mark member 20a is located within the image of the lesion T, the second sliding member 31 is slid according to the coordinate measurement values to adjust the position of the puncture needle holder 29. By determining the position in the X-axis direction and then advancing the puncture needle 32 by the predetermined amount, its tip will accurately reach the lesion T in the brain. still,
So that the movable frame 18 can be rotated by the rotating part 20,
and the puncture needle holder 29 is connected to the arcuate rail member 30
The reason why the puncture needle 32 is allowed to move in an arc above is to enable selection of the angle at which the puncture needle 32 enters the brain.
以上のように構成した測定器７によれば、CT
スキヤナによる断層撮影時において、Ｘ線の通過
路中に介在する各棒９乃至１３をＸ線にとつて妨
害作用のほとんどないカーボンフアイバーにより
形成し、しかもＸ線を散乱させる角部のない丸棒
状にしているので鮮明な画像が得られると共に、
各棒９乃至１３の直径を２〜３mmに定めているの
で、これらが画像上に0.5〜１mmの鮮明なマーク
点として表われるようになり、また各棒９乃至１
３はカーボンフアイバー製で強度的に強いから撓
みの問題がなく、総じて病変部Ｔの位置をより容
易に且つより正確に測定できる。ちなみにカーボ
フアイバーとステンレスとについて対比すると、
比強度は前者が140〜200Kg／mm2に対して後者が20
〜32Kg／mm2、以下同様の順で弾性率は24000〜
35000Kg／mm2に対して19000Kg／mm2、比弾性率は
13600〜19500Kg／mm2に対して2400Kg／mm2、比重は
1.7〜1.8に対して7.9である。 According to the measuring instrument 7 configured as described above, CT
During tomography using a scanner, each rod 9 to 13 interposed in the path of X-rays is formed of carbon fiber that has almost no interference with X-rays, and is shaped like a round rod without corners that scatter X-rays. , so you can get clear images and
Since the diameter of each rod 9 to 13 is set to 2 to 3 mm, these appear as clear mark points of 0.5 to 1 mm on the image, and each rod 9 to 1
3 is made of carbon fiber and has strong strength, so there is no problem with bending, and overall the position of the lesion T can be measured more easily and accurately. By the way, when comparing carbophore and stainless steel,
The specific strength of the former is 140-200Kg/ mm2 , while the latter is 20
〜32Kg/mm 2 , and in the same order, the elastic modulus is 24000〜
35000Kg/mm 2 vs. 19000Kg/mm 2 , the specific modulus is
The specific gravity is 2400Kg/ mm2 compared to 13600~19500Kg/ mm2 .
It is 7.9 compared to 1.7-1.8.
また本実施例のように、中心棒１１を設けてお
けば、線Ｂ，Ｃを簡単に求めることができ、更に
平行棒１２，１３を設けておけば画像の縮尺率が
簡単に求まるし、画像の歪のチエツクができる。 Further, as in this embodiment, if the center bar 11 is provided, lines B and C can be easily determined, and if parallel bars 12 and 13 are provided, the scale of the image can be easily determined, and the You can check for distortion.
尚、二本の測定棒９，１０の中点を求めること
で線Ｂ，Ｃが求まるので、中心棒１１はなくとも
よく、また画像の縮尺率が予め分つておれば、平
行棒１２，１３はなくともよい。更に測定棒９，
１０で構成する三角形は二等辺三角形に限られ
ず、またセラミツクはカーボンと同様にＸ線に対
する妨害作用が少ないから、各棒９乃至１３をセ
ラミツク製としてもよい。 Note that lines B and C can be found by finding the midpoint of the two measuring rods 9 and 10, so the center rod 11 is not necessary, and if the scale of the image is known in advance, the parallel rods 12 and 13 can be It is not necessary. Furthermore, the measuring rod 9,
The triangle constituted by 10 is not limited to an isosceles triangle, and each of the rods 9 to 13 may be made of ceramic, since ceramic, like carbon, has little interference with X-rays.
本考案は以上説明したように、病変部の位置計
測のためのCTスキヤナによる断層撮影時に測定
棒がＸ線の過度な妨害物となることを防止して鮮
明な画像を得ることができると共に、測定棒が測
定に適した大きさのマーク点となつて画像に表わ
れるから、病変部の位置を容易且つ正確に測定で
きるという優れた効果を奏するものである。
As explained above, the present invention prevents the measurement rod from becoming an excessive obstruction to X-rays during tomography using a CT scanner to measure the position of a lesion, and can obtain clear images. Since the measuring stick appears on the image as a mark point of a size suitable for measurement, the position of the lesion can be easily and accurately measured, which is an excellent effect.
図面は本考案の一実施例を示すもので、第１図
は使用状態の斜視図、第２図は拡大側面図、第３
図は分解斜視図、第４図は断層撮影画像図であ
る。
図中、１は頭部固定装置、７は病変部測定器、
８は台座、９，１０は測定棒、１１は中心棒、１
２，１３は平行棒、１７は穿刺針支持装置であ
る。
The drawings show one embodiment of the present invention, in which Figure 1 is a perspective view of the device in use, Figure 2 is an enlarged side view, and Figure 3 is an enlarged side view.
The figure is an exploded perspective view, and FIG. 4 is a tomographic image. In the figure, 1 is a head fixation device, 7 is a lesion measuring device,
8 is a pedestal, 9 and 10 are measuring rods, 11 is a center rod, 1
2 and 13 are parallel bars, and 17 is a puncture needle support device.
Claims (1)
部固定装置に固定し、頭部の輪切り状Ｘ線断層撮
影を行つて病変部の位置を計測するものにおい
て、前記頭部固定装置に取付けられる台座と、こ
の台座に患者の頭頂方向に延び且つ三角形の二辺
を構成するように設けられた測定棒とから成り、
前記測定棒をカーボン或いはセラミツクにより直
径２〜３mmの丸棒状に形成したことを特徴とする
定位脳手術用病変部測定器。 In a device for fixing the head of a patient lying supine on a bed to a head fixing device on the bed and performing slice-shaped X-ray tomography of the head to measure the position of the lesion, the device is attached to the head fixing device. consisting of a pedestal, and a measuring rod provided on the pedestal so as to extend in the direction of the top of the patient's head and form two sides of a triangle,
A lesion measuring device for stereotactic brain surgery, characterized in that the measuring rod is formed of carbon or ceramic into a round rod shape with a diameter of 2 to 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984158179U JPH0354726Y2 (en) | 1984-10-19 | 1984-10-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984158179U JPH0354726Y2 (en) | 1984-10-19 | 1984-10-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6173305U JPS6173305U (en) | 1986-05-19 |
| JPH0354726Y2 true JPH0354726Y2 (en) | 1991-12-04 |
Family
ID=30716162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984158179U Expired JPH0354726Y2 (en) | 1984-10-19 | 1984-10-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0354726Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005137489A (en) * | 2003-11-05 | 2005-06-02 | Foundation For Biomedical Research & Innovation | Head fixing device for brain surgery |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4991579A (en) * | 1987-11-10 | 1991-02-12 | Allen George S | Method and apparatus for providing related images over time of a portion of the anatomy using fiducial implants |
| JPH02299639A (en) * | 1989-05-16 | 1990-12-11 | Toshiba Corp | Brain stereotaxy apparatus and treatment place coordinates output device utilizing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6194639A (en) * | 1984-10-15 | 1986-05-13 | ラウリ ライテイネン | Adaptor |
-
1984
- 1984-10-19 JP JP1984158179U patent/JPH0354726Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6194639A (en) * | 1984-10-15 | 1986-05-13 | ラウリ ライテイネン | Adaptor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005137489A (en) * | 2003-11-05 | 2005-06-02 | Foundation For Biomedical Research & Innovation | Head fixing device for brain surgery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6173305U (en) | 1986-05-19 |
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