JPH0119927Y2 - - Google Patents
Info
- Publication number
- JPH0119927Y2 JPH0119927Y2 JP1983017401U JP1740183U JPH0119927Y2 JP H0119927 Y2 JPH0119927 Y2 JP H0119927Y2 JP 1983017401 U JP1983017401 U JP 1983017401U JP 1740183 U JP1740183 U JP 1740183U JP H0119927 Y2 JPH0119927 Y2 JP H0119927Y2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- sensor
- needle
- type sensor
- insertion 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
- 230000037431 insertion Effects 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 210000003722 extracellular fluid Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Description
【考案の詳細な説明】
(1) 技術分野
本発明は導線を有するワイヤ型センサを、直接
生体に導入するために使用する挿入針に関する。[Detailed Description of the Invention] (1) Technical Field The present invention relates to an insertion needle used to directly introduce a wire-type sensor having a conducting wire into a living body.
(2) 従来技術と問題点
生体情報を直接生体から取出すセンサを生体内
に導入する手段として留置針を使用するか、また
は、挿入針を使用している。この挿入針によつ
て、筋肉また血管に導入するセンサとして、さき
に本考案者らは細い導線を有するワイヤ型センサ
を関発した。このようなセンサは、細い金属線の
先端に電極を設け、この金属線は絶縁被覆してあ
るが、ヤング率が小さいので、単独では体内に挿
入することが困難である。(2) Prior Art and Problems An indwelling needle or an insertion needle is used as a means for introducing a sensor into a living body to directly extract biological information from the living body. The inventors of the present invention have previously developed a wire-type sensor having a thin conducting wire as a sensor to be introduced into muscles or blood vessels using this insertion needle. In such a sensor, an electrode is provided at the tip of a thin metal wire, and this metal wire is coated with insulation, but since the Young's modulus is small, it is difficult to insert the wire alone into the body.
(3) 考案の目的
本考案の目的は、ワイヤ型センサを生体内に導
入して、これを留置することができる挿入針を提
供することである。(3) Purpose of the invention The purpose of the invention is to provide an insertion needle that can introduce and indwell a wire-type sensor into a living body.
本考案の他の目的は、ワイヤ型センサを生体内
に導入するときに導線の絶縁被覆を損傷すること
のない挿入針を提供することである。 Another object of the present invention is to provide an insertion needle that does not damage the insulation coating of the conductor when introducing a wire type sensor into a living body.
(4) 考案の構成
本考案の上記目的は、針管部と刃先部とからな
る注射針の刃先部の刃面の後端部分の少なくとも
内側の周縁が樹脂層によつて被覆されていること
を特徴とする生体用ワイヤ型センサ挿入針によつ
て達成することができる。(4) Structure of the invention The above object of the invention is to provide a system in which at least the inner periphery of the rear end portion of the cutting surface of the cutting edge of a hypodermic needle consisting of a needle tube part and a cutting edge part is covered with a resin layer. This can be achieved using a biological wire-type sensor insertion needle with the following characteristics.
ワイヤ型センサの検知部は導線の先端部におけ
る所定面積の部分が絶縁被覆より露出しており、
この露出部分が通常多孔質薄膜によつて覆われて
いる。検知部を生体内に挿入したときに、この薄
膜を拡散透過して電極面に到達する生体成分の量
にもとずく電極反応によつて発生する電気量を測
定して、生体成分の濃度等を定量することができ
る。 In the detection part of a wire type sensor, a predetermined area at the tip of the conductor is exposed from the insulation coating.
This exposed portion is usually covered with a porous thin film. When the detection part is inserted into a living body, the amount of electricity generated by the electrode reaction based on the amount of biological components that diffuse through this thin film and reach the electrode surface is measured, and the concentration of the biological components is determined. can be quantified.
本考案で使用する樹脂は、生体組織のなかで血
液または組織液によつて膨潤、軟化、溶出しない
ものであり、かつ生物学的毒性を有しないもので
あれば、どの樹脂でもよく、エポキシ樹脂、ウレ
タン樹脂、シリコン樹脂などが適当である。この
樹脂の付着量は、針管の内径とセンサの大きさで
決められるが、刃先部の後端部分において刃面の
１／２〜1/3を被覆し、その厚みは500μｍ以下が好
ましい。 The resin used in the present invention may be any resin as long as it does not swell, soften, or elute with blood or interstitial fluid in living tissues, and does not have biological toxicity, such as epoxy resin, Urethane resin, silicone resin, etc. are suitable. The amount of resin deposited is determined by the inner diameter of the needle tube and the size of the sensor, but it is preferable that it covers 1/2 to 1/3 of the blade surface at the rear end portion of the blade tip and has a thickness of 500 μm or less.
(5) 実施例
第１図はワイヤ型センサを取付けた本考案の挿
入針の断面図であり、針管部１の先端に位置する
刃先部２の刃面の後端部分の周縁を被覆する樹脂
層３が設けてある。(5) Embodiment Figure 1 is a cross-sectional view of the insertion needle of the present invention with a wire-type sensor attached. Layer 3 is provided.
ワイヤ型センサは導線４の先端に検知部５を有
し、他端に端子６を有する。センサを筋肉に挿入
するときは、導線４の挿入針の樹脂層３に沿つて
曲げて、針の外に出るように取付ける。センサを
血管に挿入するときは、このように曲げないで、
刃先部の内側に止まるようにして挿入するが、こ
のとき、刃先部の後端部分と接触しても樹脂層３
があるので、検知部５の薄膜、またはその近傍の
絶縁被覆を損傷して、電極面に到達する生体成分
の量を変化させることがない。 The wire type sensor has a detection part 5 at the tip of a conducting wire 4 and a terminal 6 at the other end. When inserting the sensor into a muscle, the conductor 4 is bent along the resin layer 3 of the insertion needle and attached so that it comes out of the needle. When inserting the sensor into a blood vessel, do not bend it like this.
It is inserted so that it stays inside the blade tip, but at this time, even if it comes into contact with the rear end of the blade tip, the resin layer 3
Therefore, the thin film of the detection section 5 or the insulating coating in the vicinity thereof will not be damaged and the amount of biological components reaching the electrode surface will not be changed.
(6) 考案の効果
本考案の挿入針を使用することによつて、直接
生体内に挿入することができない細い導線を有す
るワイヤ型センサを、導線の絶縁被覆を損傷する
ことなく、最小の侵襲で生体内に導入して留置す
ることができる。(6) Effects of the invention By using the insertion needle of the invention, wire-type sensors with thin conductive wires that cannot be directly inserted into living bodies can be inserted in a minimally invasive manner without damaging the insulation coating of the conductive wires. It can be introduced into a living body and left in place.
第１図はワイヤ型センサの導線を刃面の後端部
分の周縁を被覆する樹脂層に沿つて曲げて取付け
た本考案の挿入針の断面図である。
１……針管部、２……刃先部、３……樹脂層、
４……センサの導線、５……センサの検知部、６
……センサの端子。
FIG. 1 is a cross-sectional view of the insertion needle of the present invention in which the conductive wire of the wire type sensor is bent and attached along the resin layer covering the peripheral edge of the rear end portion of the blade surface. 1... Needle tube part, 2... Blade tip part, 3... Resin layer,
4...Sensor conductor, 5...Sensor detection section, 6
...Sensor terminal.
Claims (1)
面の後端部分の少なくとも内側の周縁が樹脂層に
よつて被覆されていることを特徴とする生体用ワ
イヤ型センサ挿入針。 1. A wire-type sensor insertion needle for living body, characterized in that at least the inner periphery of the rear end portion of the cutting surface of the injection needle consisting of a needle tube portion and a cutting edge portion is covered with a resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983017401U JPS59124503U (en) | 1983-02-10 | 1983-02-10 | Biological wire type sensor insertion needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983017401U JPS59124503U (en) | 1983-02-10 | 1983-02-10 | Biological wire type sensor insertion needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59124503U JPS59124503U (en) | 1984-08-22 |
| JPH0119927Y2 true JPH0119927Y2 (en) | 1989-06-09 |
Family
ID=30148624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983017401U Granted JPS59124503U (en) | 1983-02-10 | 1983-02-10 | Biological wire type sensor insertion needle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59124503U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4914470U (en) * | 1972-05-11 | 1974-02-06 |
-
1983
- 1983-02-10 JP JP1983017401U patent/JPS59124503U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4914470U (en) * | 1972-05-11 | 1974-02-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59124503U (en) | 1984-08-22 |
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