JPH01175834A - Method for measuring intestinal pressure - Google Patents
Method for measuring intestinal pressureInfo
- Publication number
- JPH01175834A JPH01175834A JP33398387A JP33398387A JPH01175834A JP H01175834 A JPH01175834 A JP H01175834A JP 33398387 A JP33398387 A JP 33398387A JP 33398387 A JP33398387 A JP 33398387A JP H01175834 A JPH01175834 A JP H01175834A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- intestinal
- balloon
- intestine
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000968 intestinal effect Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims description 10
- 210000000936 intestine Anatomy 0.000 claims abstract description 25
- 239000003814 drug Substances 0.000 claims abstract description 24
- 229940079593 drug Drugs 0.000 claims abstract description 21
- 210000000436 anus Anatomy 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 27
- 239000007924 injection Substances 0.000 claims description 27
- 210000002429 large intestine Anatomy 0.000 claims description 16
- 230000000112 colonic effect Effects 0.000 claims description 6
- 210000000664 rectum Anatomy 0.000 claims description 4
- 210000001072 colon Anatomy 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 abstract description 16
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract description 16
- 241000792859 Enema Species 0.000 abstract description 6
- 239000007920 enema Substances 0.000 abstract description 6
- 229940095399 enema Drugs 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 101100491857 Columba livia ASL gene Proteins 0.000 abstract 2
- 208000036366 Sensation of pressure Diseases 0.000 abstract 1
- 230000029142 excretion Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 150000001552 barium Chemical class 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、直腸カテーテルの腸内バルーンを膨張した時
点の腸内バルーンの内圧ＰＯと、同直腸カテーテルを介
して大腸内に薬剤・エア等を注入、又は同大腸内から薬
剤・エア等を排泄している時点の腸内バルーンの内圧Ｐ
とを測定してその差圧を算出することで薬剤・エアの注
入、又は排泄することにより大腸内壁に掛かる圧力を測
定する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is based on the internal pressure PO of the intestinal balloon of a rectal catheter when the intestinal balloon is inflated, and the control of the internal pressure PO of the intestinal balloon of the rectal catheter, and the control of the internal pressure PO of the intestinal balloon of the rectal catheter, and the control of the internal pressure PO of the intestinal balloon of the rectal catheter, and the control of the internal pressure PO of the intestinal balloon of the rectal catheter. Internal pressure P of the intestinal balloon at the time of injecting or expelling drugs, air, etc. from the large intestine
The present invention relates to a method of measuring the pressure exerted on the inner wall of the large intestine by injecting or excreting a drug or air by measuring the pressure and calculating the differential pressure between the two.
（従来の技術）
直腸カテーテルを使用した注腸法大腸検査では、バリウ
ム等の薬剤注入やエアの注入、又これ等の排泄がある。(Prior Art) In colon examination using the enema method using a rectal catheter, there are injections of drugs such as barium, injection of air, and excretion of these substances.
これ等は機器を使用して注入、排泄を行うが、常に圧力
又は負圧をもって行うので大きな圧力、負圧が大腸に作
用すれば危険を伴うことになる。従って、大腸内への薬
剤やエア等の注入、排泄時は常に腸内圧を監視しておか
なければならない。These devices use equipment for infusion and excretion, but this is always done under pressure or negative pressure, which can be dangerous if large pressure or negative pressure acts on the large intestine. Therefore, it is necessary to constantly monitor the intestinal pressure when injecting or excreting drugs, air, etc. into the large intestine.
従来ではこの薬剤やエアの注入、排泄時の大腸内の圧力
を測定器でもって計測するのでなく、患者からの訴え、
側についた看護婦等の目視會こよる観察、腸内Ｘ線透過
中のモーターの監視等により医師等が経験的に腸内圧を
想定していた。Conventionally, the pressure inside the large intestine during injection and excretion of drugs and air was not measured using a measuring device, but based on complaints from patients,
Physicians and others had estimated the intestinal pressure empirically through visual observation by nurses and others who were nearby, and by monitoring the motor during intestinal X-ray transmission.
（発明が解決しようとする問題点）
この従来の方法では、正確な腸内圧は知ることができず
、これでは圧力の過大、又は大きな負圧が作用すること
により大腸を損傷させる危険性がある。又、腸内圧の不
適切さからＸ線透過中にも看護婦等が患者の側に寄って
注入、排泄等の手直しをする場合があり、これにより看
護婦等がＸ線を被曝してしまうという問題点があった。(Problems to be solved by the invention) With this conventional method, accurate intestinal pressure cannot be determined, and there is a risk of damaging the large intestine due to excessive pressure or large negative pressure. . Additionally, due to inadequate intestinal pressure, nurses and others may approach the patient during X-ray transmission to make adjustments such as injecting and excreting the patient, resulting in nurses and others being exposed to X-rays. There was a problem.
又、直腸カテーテルは腸内バルーン、同腸内バルーンの
エア注入路、腸内への薬剤の注入、エアの注入等に夫々
独立した注入路を必要とし、しかも肛門から直腸内に挿
入して使用するためできるだけプンパクトに形成しなけ
ればならない。このようにした従来の直腸カテーテルの
先端（こは圧力測定用のセンサー等を取り込む余裕はな
く、又、製作も困難である等の問題点があった。In addition, rectal catheters require independent injection paths for the intestinal balloon, air injection path for the intestinal balloon, injection of drugs into the intestines, injection of air, etc., and are used by being inserted into the rectum from the anus. In order to do this, it must be formed as compactly as possible. The tip of the conventional rectal catheter has problems such as there is no room to incorporate a pressure measurement sensor, etc., and it is difficult to manufacture.
（問題点を解決するための手段）
本発明はかかる従来の問題点を解決するためになされた
もので、直腸カテーテルの先端（こ腸内圧測定用のセン
サー等を組み込む必要がなく、従来の直腸カテーテルが
そのまま使用でき、薬剤・エア等の腸内への注入、又は
腸内から排泄しているときの腸内圧を簡単に又、正確に
測定できる大腸内圧の測定方法を提供する。(Means for Solving the Problems) The present invention has been made to solve the problems of the conventional art. To provide a method for measuring colonic pressure in which a catheter can be used as is and the intestinal pressure can be simply and accurately measured when drugs, air, etc. are injected into the intestine or excreted from the intestine.
その要旨は、肛門から直腸内に先端を差し込みエア注入
路からエフを注入して腸内で膨張させる腸内バルーンを
有する直腸カテーテルを使用し、同腸内で膨張させた時
点の同腸内バルーンの内圧りと、同直腸カテーテルを介
して大腸内に薬剤・エア等を注入し、又は同腸内から薬
剤・エア等を排泄している時点の腸内バルーンの内圧Ｐ
とを腸内バルーンにエアを注入するエア注入路に設けた
圧力センナで感知して算出したその差圧値を大腸内壁に
かかる圧力としたことを特徴とする大腸内圧の測定方法
暑こある。The gist of this method is to use a rectal catheter with an intestinal balloon whose tip is inserted into the rectum from the anus and injected with F through the air injection channel to inflate it in the intestine. and the internal pressure P of the intestinal balloon at the time of injecting drugs, air, etc. into the large intestine through the same rectal catheter, or expelling drugs, air, etc. from the same intestine.
A method for measuring colonic pressure is hot, which is characterized in that the pressure applied to the inner wall of the colon is determined by the differential pressure value detected by a pressure sensor installed in an air injection path for injecting air into an intestinal balloon and calculated.
（作用）
本発明の大腸内圧の測定方法では、先端に腸内バルーン
を有する直腸カテーテルを使用する。(Function) In the method for measuring colonic pressure of the present invention, a rectal catheter having an intestinal balloon at its tip is used.
そしてこの腸内バルーンのエア注入路に圧力センサーを
取付けて測定する。A pressure sensor is then attached to the air injection path of this intestinal balloon to measure the pressure.
直腸カテーテルの先端を肛門から直腸内に挿入し、腸内
バルーンのエフ注入路から注射器等を使用してエアを注
入し、腸内バルーンを大腸内で膨張させる。この時点の
大腸内壁の受ける圧力は腸内バルーンの内圧Ｐｏに同一
とみて、この腸内バルーンの内圧ＰＯを薬剤やエアを注
入、排泄しないときの腸内圧とする。The tip of the rectal catheter is inserted into the rectum through the anus, and air is injected from the F injection path of the intestinal balloon using a syringe or the like to inflate the intestinal balloon within the large intestine. The pressure exerted on the inner wall of the large intestine at this point is considered to be the same as the internal pressure Po of the intestinal balloon, and this internal pressure PO of the intestinal balloon is taken as the intestinal pressure when no medicine or air is injected or excreted.
前記状態で薬−割注入管よりバリウムを注入するとバリ
ウムは、直腸カテーテルの先端をこ穿孔した薬剤注入孔
より大腸内に注入される。大腸内はバリウムの注入によ
り内圧が上るが、同時に腸内バルーンの前面側もこのバ
リウムをこよって圧力を受けるから腸内バルーンの内圧
は大きくなる。この時点の腸内バルーンの内圧Ｐから前
記薬剤を注入していない時点の腸内バルーンの内圧Ｐｏ
を差引いた値が実際の大腸内が受けている圧力値となる
。When barium is injected from the drug injection tube in the above state, the barium is injected into the large intestine through the drug injection hole made at the tip of the rectal catheter. The internal pressure in the large intestine increases due to barium injection, but at the same time, the front side of the intestinal balloon also receives pressure through this barium, so the internal pressure of the intestinal balloon increases. From the internal pressure P of the intestinal balloon at this point to the internal pressure Po of the intestinal balloon at the time when the drug is not injected.
The value obtained by subtracting this value is the actual pressure value inside the large intestine.
直腸カテーテルの薬剤排泄管側を負正にして腸内の圧力
を負正にすることにより腸内のバリウムやエアを吸引す
ると腸内は負圧となることから腸内バルーンは減圧する
。この時点の腸内バルーンの内圧Ｐから前記薬剤を注入
しない時点の腸内バルーンの内圧Ｐｏを差引いた値が実
際に大腸内が受けている負圧値となる。By setting the drug evacuation tube side of the rectal catheter to negative and positive to make the pressure inside the intestine negative and positive, barium and air in the intestine are aspirated, resulting in a negative pressure in the intestine, and therefore the intestinal balloon is decompressed. The value obtained by subtracting the internal pressure Po of the intestinal balloon at the time when the drug is not injected from the internal pressure P of the intestinal balloon at this point becomes the negative pressure value actually applied to the large intestine.
この検知した圧力値・負圧値を表示して医師・看護婦等
の目安とし、又、制御装置を作動させてバリウムの加圧
部、エアポンプ等の駆動を制御することができる。The detected pressure value/negative pressure value can be displayed as a reference for doctors, nurses, etc., and the control device can be operated to control the driving of the barium pressurizing section, the air pump, etc.
（実施例） 以下、本発明の詳細な説明する。(Example) The present invention will be explained in detail below.
本第１実施例では、腸内バルーンは場外バルーンと共に
肛門に密着して薬剤・エア等の漏り防止用としたバルー
ンを利用する。In the first embodiment, the intestinal balloon is a balloon that fits closely to the anus to prevent leakage of medicine, air, etc. together with an off-site balloon.
使用する直腸カテーテル（１）は、従来の腸内バルーン
（２）、場外バルーン（３）、ＩＩｉ内バルーン用エフ
注入路（４）、場外バルーン用エア注入路（５）、それ
に薬剤注入口（６）、薬剤注入路（７）、腸内（８）へ
のエフ注入路（９）、薬剤排泄路（１１等からなるもの
で、この腸内バルーン用エフ注入路（４）に圧力センサ
ー（１０を取付けている。The rectal catheter (1) used includes a conventional intestinal balloon (2), an off-site balloon (3), an F injection path for the IIi intra-balloon (4), an air injection path for the off-site balloon (5), and a drug injection port ( 6), a drug injection path (7), an F injection path (9) to the intestine (8), a drug excretion path (11, etc.), and a pressure sensor ( 10 is installed.
腸内バルーン（２）までを肛門（Ｉ２から腸内（８）へ
挿入し、圧力センサー（ｌｏを覧視しながら腸内バルー
ン用エフ注入路（４）に接続した注射器（１１を押圧し
て腸内バルーン（２）を規定圧力Ｐｏまで膨張させ圧力
を固定する。次に場外バルーン（３）も膨張させて両バ
ルーンを肛門０４に密着させる。Insert the intestinal balloon (2) into the intestine (8) from the anus (I2), and press the syringe (11) connected to the F injection path (4) for the intestinal balloon while checking the pressure sensor (lo). The intestinal balloon (2) is inflated to a specified pressure Po and the pressure is fixed.Next, the off-site balloon (3) is also inflated to bring both balloons into close contact with the anus 04.
この後注腸器０４のバリウム加圧部（ｌを作動してバリ
ウム（１１を腸内（８）へ注入する。このとき腸内バル
ーン（２）の前面は注入したバリウム（１→により大腸
内壁と同じ圧力りを受けるため腸内バルーンの内圧が上
昇する。これによって圧力センサー（１０は腸内バルー
ン用エア注入路（４）を通じて腸内バルーン（２）の上
昇した内圧を検知する。After this, operate the barium pressurizing part (l) of the enema device 04 to inject barium (11) into the intestine (8). At this time, the front surface of the intestine balloon (2) The internal pressure of the intestinal balloon increases because it receives the same pressure as the internal pressure of the intestinal balloon.As a result, the pressure sensor (10) detects the increased internal pressure of the intestinal balloon (2) through the intestinal balloon air injection path (4).
腸内（８）からバリウム（ｌ・を排泄するときは、注腸
器（１４のエア排出用のエフポンプ（１７１を駆動し密
閉容器（１１を負圧にする。直腸カテーテル（１）の薬
剤排泄路（ＩＩはこの密閉容器（１４と接続されており
、このため腸内のバリウムは密閉容器（１１内に吸引さ
れる。When excreting barium (L) from the intestine (8), drive the enema device (14) F-pump (171) to create a negative pressure in the sealed container (11).Drug excretion from the rectal catheter (1). The tract (II) is connected to this closed container (14), so that the barium in the intestines is sucked into the closed container (11).
このとき腸内（８）は負圧となり腸内バルーン（２）は
膨張し、負圧となることから圧力センサー（１１）は腸
内バルーン（２）の負圧を検知する。At this time, the intestine (8) becomes negative pressure, the intestinal balloon (2) expands, and the pressure sensor (11) detects the negative pressure in the intestinal balloon (2).
（１１ン
第１図中（ＩＩは圧力センサー。により注腸器（ｔ４を
自動制御するようにした算出・制御回路部で、＠Ｑはア
ンプ、ＱｏはＡ／Ｄ変換器、（財）は記憶回路、（転）
は差分回路、シ４は比較回路、（２）は設定回路、（財
）は開閉制御器、Ｑｌはセットボタンである。前記差分
回路（２３で内圧の変化分ΔＰ ＝ Ｐ −Ｐｏを算出
し、設定回路（２）で設定した腸内圧の変化量の最高値
ΔＰＨと最低値−ΔＰＬを基に比較回路Ｑ４で一ΔＰＬ
＜ΔＰくΔＰＨを比較する。そして条件に合った時点で
開閉制御＠ｅ→を作動してバリウム加圧部（１時やエア
排出用のエアポンプ（１力、エア注入用のエフポンプ（
ハ）等を制御する。(11) In Figure 1 (II is the pressure sensor. It is the calculation/control circuit that automatically controls the enema (t4), @Q is the amplifier, Qo is the A/D converter, Memory circuit, (transformation)
4 is a differential circuit, 4 is a comparison circuit, (2) is a setting circuit, 2 is a switching controller, and Ql is a set button. The difference circuit (23) calculates the change in internal pressure ΔP = P - Po, and the comparison circuit Q4 calculates - ΔPL based on the maximum value ΔPH and minimum value -ΔPL of the amount of change in intestinal pressure set in the setting circuit (2).
<ΔP>Compare ΔPH. Then, when the conditions are met, the opening/closing control @e is activated to activate the barium pressurization section (1 o'clock), the air pump for air discharge (1 o'clock), and the F pump for air injection (1 o'clock).
c) Control etc.
第２実施例の腸内バルーン翰は肛門密着用の腸内バルー
ン（２）よりも更に直腸カテーテル（１）の先端側に腸
内圧力測定専用として設けたものである。The intestinal balloon holder of the second embodiment is provided specifically for measuring intestinal pressure further toward the distal end of the rectal catheter (1) than the intestinal balloon (2) for anal sealing.
但しエフ注入路は腸内バルーン（２）と共用とし、圧力
センサー（１１）も同様にエフ注入路（４）に取付けて
測定する。腸内バルーン（ＩＩは測定専用であるので漏
れ防止用の腸内バルーン（２）程大きくする必要はなく
、腸内の検査範囲を縮小したりすることがない。尚、腸
内バルーン（２）用のエア注入給は腸内圧の検査専用の
みに別途設けるようにしてもよい。However, the F injection path is shared with the intestinal balloon (2), and the pressure sensor (11) is similarly attached to the F injection path (4) for measurement. Since the intestinal balloon (II) is used only for measurement, it does not need to be as large as the intestinal balloon (2) for leak prevention, and it does not reduce the examination range inside the intestine.In addition, the intestinal balloon (2) A separate air injection supply may be provided exclusively for testing intestinal pressure.
（発明の効果）
以上の様に本発明によれば、腸内バルーン内圧を利用し
て大腸内の圧力を測定するようにしたので、今まで医師
や看護婦等の経験や患者の訴えに頼って判断していたも
のが、個人差や曖昧さがなく機械的に、又連続して正確
に検知できるので適正で安全な腸内圧を保らながら検査
することができる。又、取扱いも大変簡単で特別の技術
も必要とせず、安定して作動することから医師、看護婦
等がＸ線透過中に手直しして被曝するようなこともなく
安全である。それに従来の直腸カテーテルも利用できる
ので大変経済的である。(Effects of the Invention) As described above, according to the present invention, the pressure inside the large intestine is measured using the internal pressure of the intestinal balloon. What was previously determined can be accurately detected mechanically and continuously without individual differences or ambiguity, making it possible to perform tests while maintaining appropriate and safe intestinal pressure. In addition, it is very easy to handle, does not require any special skills, and operates stably, so it is safe because doctors, nurses, etc. do not have to make adjustments during X-ray transmission and are exposed to radiation. Additionally, conventional rectal catheters can also be used, making it very economical.
第１図は本発明第１実施例の使用状態を示す説明図、第
２図は第２実施例の直腸カテーテルを示す説明図である
。FIG. 1 is an explanatory diagram showing the state of use of the first embodiment of the present invention, and FIG. 2 is an explanatory diagram showing the rectal catheter of the second embodiment.
Claims (1)
アを注入して腸内で膨張させる腸内バルーンを有する直
腸カテーテルを使用し、同腸内で膨張させた時点の同腸
内バルーンの内圧Ｐｏと、同直腸カテーテルを介して大
腸内に薬剤・エア等を注入し、又は同腸内から薬剤・エ
ア等を排泄している時点の腸内バルーンの内圧Ｐとを腸
内バルーンにエアを注入するエア注入路に設けた圧力セ
ンサで感知して算出したその差圧値を大腸内壁にかかる
圧力としたことを特徴とする大腸内圧の測定方法。 ２）圧力を測定する腸内バルーンが腸外バルーンと共に
肛門に密着して薬剤・エア等の漏れ防止用としたバルー
ンである特許請求の範囲第１項記載の大腸内圧の測定方
法。 ３）圧力を測定する腸内バルーンが漏れ防止用のバルー
ンと別体とした腸内圧測定専用のバルーンである特許請
求の範囲第１項記載の大腸内圧の測定方法。[Claims] 1) Use a rectal catheter with an intestinal balloon whose tip is inserted into the rectum from the anus and inflated in the intestine by injecting air from the air injection path, and when the catheter is inflated in the intestine. The internal pressure Po of the intestinal balloon and the internal pressure P of the intestinal balloon at the time when drugs, air, etc. are injected into the large intestine through the same rectal catheter, or when drugs, air, etc. are excreted from the large intestine. A method for measuring colonic pressure, characterized in that the differential pressure value detected and calculated by a pressure sensor provided in an air injection path for injecting air into an intestinal balloon is used as the pressure applied to the inner wall of the colon. 2) The method for measuring colonic pressure according to claim 1, wherein the intestinal balloon for measuring the pressure is a balloon that fits closely to the anus together with an extraintestinal balloon to prevent leakage of medicine, air, etc. 3) The method for measuring colonic pressure according to claim 1, wherein the intestinal balloon for measuring pressure is a balloon dedicated to measuring intestinal pressure, which is separate from a balloon for preventing leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33398387A JPH01175834A (en) | 1987-12-31 | 1987-12-31 | Method for measuring intestinal pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33398387A JPH01175834A (en) | 1987-12-31 | 1987-12-31 | Method for measuring intestinal pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01175834A true JPH01175834A (en) | 1989-07-12 |
| JPH0349498B2 JPH0349498B2 (en) | 1991-07-29 |
Family
ID=18272177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33398387A Granted JPH01175834A (en) | 1987-12-31 | 1987-12-31 | Method for measuring intestinal pressure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01175834A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5743260A (en) * | 1990-08-22 | 1998-04-28 | Nellcor Puritan Bennett Incorporated | Fetal pulse oximetry apparatus and method of use |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722895U (en) * | 1980-07-15 | 1982-02-05 | ||
| JPS6092503U (en) * | 1983-11-28 | 1985-06-24 | 土田 正義 | Urethral pressure detection device |
| JPS6092502U (en) * | 1983-11-28 | 1985-06-24 | 土田 正義 | Urethral pressure detection device |
-
1987
- 1987-12-31 JP JP33398387A patent/JPH01175834A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722895U (en) * | 1980-07-15 | 1982-02-05 | ||
| JPS6092503U (en) * | 1983-11-28 | 1985-06-24 | 土田 正義 | Urethral pressure detection device |
| JPS6092502U (en) * | 1983-11-28 | 1985-06-24 | 土田 正義 | Urethral pressure detection device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5743260A (en) * | 1990-08-22 | 1998-04-28 | Nellcor Puritan Bennett Incorporated | Fetal pulse oximetry apparatus and method of use |
| US6671530B2 (en) | 1990-08-22 | 2003-12-30 | Nellcor Puritan Bennett Incorporated | Positioning method for pulse oximetry fetal sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0349498B2 (en) | 1991-07-29 |
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