JPS598973A - Cathetel - Google Patents
CathetelInfo
- Publication number
- JPS598973A JPS598973A JP57118406A JP11840682A JPS598973A JP S598973 A JPS598973 A JP S598973A JP 57118406 A JP57118406 A JP 57118406A JP 11840682 A JP11840682 A JP 11840682A JP S598973 A JPS598973 A JP S598973A
- Authority
- JP
- Japan
- Prior art keywords
- catheter
- present
- permanent magnetic
- magnetic member
- target site
- 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.)
- Pending
Links
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は診断の丸めの医療機器の分野に属し、さらに詳
しくは、被検体の体腔や空胴性臓器の中に挿入して計測
等を行う中空の管（以下カテーテルという）に関するも
のである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention belongs to the field of medical equipment for diagnosis, and more specifically, it is inserted into a body cavity or hollow organ of a subject to perform measurements, etc. This relates to a hollow tube (hereinafter referred to as a catheter).
従来よりカテーテル全体内に挿入することにより、体液
や分泌液の導出、薬液や造影剤等の注入。Conventionally, by inserting the entire catheter into the catheter, body fluids and secretions can be drawn out, and medicines and contrast agents can be injected.
狭窄の改善や作成、血圧、溶存ガス、血流などの計測、
臓器への電気刺激などが行なわれている。Improving or creating stenosis, measuring blood pressure, dissolved gas, blood flow, etc.
Electrical stimulation of organs is performed.
このカテーテルを体内の目的部位へ到達させる窺めに１
種々の異なった方法が提案されているが、一般には誘導
糸を用いてカテーテル先端の操作を行いながら目的部位
への案内を行なっている。カテーテルが目的部位へ到達
した後には、前記誘導糸は抜き取られ、造影剤の注入、
血圧の測定、温度の測定等の各種のカテーテルの目的に
応じた検査が行なわれる。In order to get this catheter to the target site in the body,
Although various different methods have been proposed, generally a guiding thread is used to guide the catheter to the target site while manipulating the tip of the catheter. After the catheter reaches the target site, the guide thread is removed and a contrast agent is injected.
Various tests are performed depending on the purpose of the catheter, such as blood pressure measurement and temperature measurement.
しかしながら、一般にカテーテル全目的部位に固定して
おくことは困難であシ、特に血管内、臓器内においては
血液あるいは臓器内の液流等の影響によってカテーテル
の設定が不安定な状態となっている。このような状態に
おいて各種のカテーテル検査を行うことは、測定精度の
悪化、再現性の低下を伴い、信頼性の高い定量的な結果
金得ることが困難となっている０このため、安定した状
態でカテーテル検査を行い得ることが切に望まれている
。However, it is generally difficult to keep the catheter fixed at all target sites, and especially in blood vessels and organs, the catheter settings are unstable due to the influence of blood or fluid flow within the organ. . Performing various catheter tests in such conditions is accompanied by deterioration of measurement accuracy and reproducibility, making it difficult to obtain reliable quantitative results. It is highly desirable to be able to perform catheter examinations in Japan.
本発明は前記事情に鑑みてなされたものであり、体内の
目的部位において安定に設定保持することができるカテ
ーテルを提供することを目的とするものである。The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a catheter that can be stably set and held at a target site within the body.
前記目的を達成するための本発明の概要は、被検体の体
内に挿入して計測等を行うカテーテルにおいて、先端部
に永久磁性部材を有すること全特卆とするものである。The outline of the present invention for achieving the above object is that a catheter that is inserted into the body of a subject to perform measurements, etc. is characterized by having a permanent magnetic member at its tip.
以下、本発明の一実施例を図面全参照して説明する。第
１図、第２図は本発明の一実施例であるカテーテルの正
面図、横断面図である。第１図。Hereinafter, one embodiment of the present invention will be described with reference to all the drawings. FIGS. 1 and 2 are a front view and a cross-sectional view of a catheter that is an embodiment of the present invention. Figure 1.
第２図において、本発明に係るカテーテルが従来のカテ
ーテルと相違する点は、カテーテル１の先端に永久磁性
部材２全設は几ことである。前記カテーテル１は既知の
ごとく中空部６を有する管状を成し、材質、太さ、長さ
、形状等は用途に応じて多種多様である。材質をその用
途に応じて必要とされる硬さに基づいて大別すると、硬
性の場合には金属が、たわみ性の場合には合成樹脂が用
いられる。又、カテーテルの太さについては、１冒以下
の細いものから１側根度の太いものまである。In FIG. 2, the catheter according to the present invention differs from conventional catheters in that the permanent magnetic member 2 is completely disposed at the tip of the catheter 1. As is known, the catheter 1 has a tubular shape with a hollow portion 6, and its material, thickness, length, shape, etc. may vary depending on the purpose. Materials can be roughly classified based on the hardness required depending on the application. Metals are used for hard materials, and synthetic resins are used for flexible materials. In addition, the diameter of the catheter ranges from one as thin as one side to as thick as one side.
前記カテーテル１の末端部の外周にはネジ部が形成され
ている。前記永久磁性部材２は、非腐食性の永久磁性体
よシなシ、前記カテーテル１のネジ部に螺合された際に
、前記中空部ろと連通する同一径の中空部４を有してい
る。A threaded portion is formed on the outer periphery of the distal end of the catheter 1 . The permanent magnetic member 2 is made of a non-corrosive permanent magnetic material and has a hollow portion 4 of the same diameter that communicates with the hollow portion when screwed into the threaded portion of the catheter 1. There is.
以上のように構成されたカテーテルの作用について説明
する。このカテーテルを被検体内の目的部位へ到達させ
るためには、従来のごとく例えば誘導糸を用いて行なわ
れる。カテーテルが目的部位へ到達した後、前記誘導糸
は抜き取られるが、この際、目的部位が血管内あるいは
臓器内であれば血液等の流動によシカチーチルの設定位
置が極めて不安定である。そこで、被検体における前記
目的部位に対して外部よシ磁界をかけると、前記カテー
テル１の先端に取シ付けられた永久磁性部材２を外部磁
場によシ磁気的に半固定することができる。従って、外
部からの磁界が作用している限シカチーチル１を目的部
位に対して安定に設定保持することができる。この間に
各種のカテーテル検査例えば前記中空部６，４全介して
体液１分泌液の導出又は薬液や造影剤の注入等を行えば
、測定精度の向上を図ることができ、かつ、信頼性の高
い定量的な結果を得ることができる。The operation of the catheter configured as above will be explained. In order to reach the target site within the subject, this catheter is conventionally carried out using, for example, a guiding thread. After the catheter reaches the target site, the guide thread is pulled out, but at this time, if the target site is inside a blood vessel or an organ, the position of the guide thread is extremely unstable due to the flow of blood or the like. Therefore, when an external magnetic field is applied to the target region of the subject, the permanent magnetic member 2 attached to the tip of the catheter 1 can be semi-magnetically fixed by the external magnetic field. Therefore, it is possible to stably set and hold the limiting member 1 relative to the target area on which an external magnetic field is applied. During this time, if various catheter tests are performed, for example, the discharge of body fluid 1 secretion or the injection of drug solution or contrast medium through the hollow parts 6 and 4, the measurement accuracy can be improved and the reliability can be improved. Quantitative results can be obtained.
本発明は前記実施例に限定されるものではなく、本発明
の要旨の範囲内で種々の変形例を包含することは言う寸
でもない。前述したように、カテーテルはその用途に応
じて種々の形状があるが、本発明はそれら全てに適用で
きることは言うまでもない。例えば、カテーテル検査が
血圧等の測定であれば、第５図に示すように、カテーテ
ル５の先端近傍に圧力計６を設け、中空部７より信号線
８を引き出すと共に、カテーテル５の先端部に永久磁性
部材９′ｆ、挿着すればよい。この際、永久磁性部材９
には中空部を設ける必要がない。尚、永久磁性部材をカ
テーテルに取り付ける手段はネジ止め、圧入に限定され
るものではなく、又、必ずしも脱着可能であることを要
しない。It goes without saying that the present invention is not limited to the embodiments described above, and includes various modifications within the scope of the gist of the present invention. As mentioned above, catheters have various shapes depending on their uses, and it goes without saying that the present invention can be applied to all of them. For example, if the catheter test is to measure blood pressure or the like, as shown in FIG. The permanent magnetic member 9'f may be inserted and attached. At this time, the permanent magnetic member 9
There is no need to provide a hollow part. Note that the means for attaching the permanent magnetic member to the catheter is not limited to screwing or press-fitting, and it does not necessarily have to be removable.
以上説明１７たように、この発明によるとカテーテル先
端に永久磁性部材全敗り付けたことによシ、カテーテル
検査中外部磁場の作用によシカチーチルを目的部位に対
して安定に設定保持することができる。従って、血液の
流れの速い目的部位又は心臓のように激しい動きを伴う
目的部位に対してもカテーテル全安定に設定保持するこ
とができ、カテーテル検査の測定精度及び再現性の向上
を図ると共に信頼性の高い定量的な結果を得ることが可
能となる。As explained above, according to the present invention, since the permanent magnetic member is completely attached to the tip of the catheter, the catheter can be stably set and held at the target site by the action of an external magnetic field during catheter examination. . Therefore, the catheter can be set and maintained completely stably even for target areas with fast blood flow or intense movement such as the heart, which improves measurement accuracy and reproducibility of catheter examinations and improves reliability. It becomes possible to obtain highly quantitative results.
第１図、第２図は本発明の一実施例であるカテーテルの
正面図、横断面図、第６図は本発明の変形例として圧力
計を有するカテーテルの横断面図である。
１．５・・・カテーテル、 ２，９・・・永久磁性部材
、３．４．７・・・中空部、 ６・・・圧力側、
８・・・信号線０1 and 2 are a front view and a cross-sectional view of a catheter according to an embodiment of the present invention, and FIG. 6 is a cross-sectional view of a catheter having a pressure gauge as a modified example of the present invention. 1.5...Catheter, 2,9...Permanent magnetic member, 3.4.7...Hollow part, 6...Pressure side,
8...Signal line 0
Claims (1)
て、先端部に永久磁性部材を有することを特徴とするカ
テーテル。A catheter that is inserted into a subject's body to perform measurements, etc., and is characterized by having a permanent magnetic member at its tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57118406A JPS598973A (en) | 1982-07-09 | 1982-07-09 | Cathetel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57118406A JPS598973A (en) | 1982-07-09 | 1982-07-09 | Cathetel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS598973A true JPS598973A (en) | 1984-01-18 |
Family
ID=14735854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57118406A Pending JPS598973A (en) | 1982-07-09 | 1982-07-09 | Cathetel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS598973A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61100439U (en) * | 1984-12-04 | 1986-06-26 | ||
| JPS62125542U (en) * | 1986-01-31 | 1987-08-10 | ||
| JP2000512873A (en) * | 1996-06-17 | 2000-10-03 | ルーセント メディカル システムズ，インコーポレイテッド | Medical tube inserted and detected in the patient's body |
-
1982
- 1982-07-09 JP JP57118406A patent/JPS598973A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61100439U (en) * | 1984-12-04 | 1986-06-26 | ||
| JPS62125542U (en) * | 1986-01-31 | 1987-08-10 | ||
| JPH0425140Y2 (en) * | 1986-01-31 | 1992-06-16 | ||
| JP2000512873A (en) * | 1996-06-17 | 2000-10-03 | ルーセント メディカル システムズ，インコーポレイテッド | Medical tube inserted and detected in the patient's body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4665925A (en) | Doppler catheter | |
| US5058595A (en) | Judkins-type angiographic catheter with Doppler crystal, and method of use | |
| US4922912A (en) | MAP catheter | |
| US4889128A (en) | Doppler catheter | |
| DE69226371T2 (en) | TRANSPORT CATHETER AND ULTRASONIC PROBE FOR USE WITH THE SAME | |
| US4024873A (en) | Balloon catheter assembly | |
| US3810459A (en) | Transcutaneous blood vessel probe with relocation marker | |
| US4941473A (en) | Guide for mechanical guiding of a catheter in connection with cardio and vascular examination | |
| DE69132220T2 (en) | CATHETER FOR IMAGE GENERATION USING ACOUSTIC ENERGY | |
| US4108165A (en) | Transducer probe for pulse-echo ultrasonic exploration | |
| US6165127A (en) | Acoustic imaging catheter and the like | |
| US4105022A (en) | Method of determining cardiac output by thermodilution principles and utilization of a catheter assembly | |
| US4384470A (en) | Method and apparatus for testing blood vessel catheters | |
| EP0132344A2 (en) | Improved catheter based cardiac output sensor | |
| US3565056A (en) | Body fluid pressure measuring apparatus | |
| JPS5838540A (en) | Optical fiber ph probe for physiological investigation | |
| JP2001104315A (en) | Ultrasonic-guided paracentesis system device | |
| US3249103A (en) | Method and apparatus for measuring bioelectronic parameters | |
| CN216876522U (en) | Puncture instrument | |
| JPS61162956A (en) | Leak balloon catheter | |
| EP1202757A1 (en) | Microdialysis probe | |
| JP2017500127A (en) | Invasive medical needle and needle assembly | |
| JPS598973A (en) | Cathetel | |
| CN219127921U (en) | Novel microcatheter with DSA nerve intervention gold marking function | |
| CN216876521U (en) | Puncture instrument |