JP4268260B2 - Luminescent injection needle - Google Patents

Luminescent injection needle Download PDF

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Publication number
JP4268260B2
JP4268260B2 JP12340899A JP12340899A JP4268260B2 JP 4268260 B2 JP4268260 B2 JP 4268260B2 JP 12340899 A JP12340899 A JP 12340899A JP 12340899 A JP12340899 A JP 12340899A JP 4268260 B2 JP4268260 B2 JP 4268260B2
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Prior art keywords
needle
tube
injection
rear end
branch pipe
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JP12340899A
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JP2000312719A (en
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和博 石坂
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石坂 和博
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  • Surgical Instruments (AREA)
  • Endoscopes (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、内視鏡手術に用いる注入針、特に内視鏡観察しながら臓器の壁部に差し込まれる注入針に関する。
【0002】
【従来の技術】
例えば膀胱尿管逆流(膀胱から尿管及び腎臓への尿の逆流)の治療には、膀胱内に内視鏡を差し入れ、内視鏡に装着された注入針を膀胱内から膀胱壁内に差し込み、この注入針を通して、膀胱に開口している尿管口周囲の膀胱壁内に注入剤(例えば脂肪やコラーゲン等)を注入して尿管口を狭めることが行われる。また、このような膀胱内からの注入の他に、膀胱内からの内視鏡による観察を行いながら、膣壁や会陰部等の体外から注入針を差し込み、膀胱の外側から注入剤を注入することも行われている。
【0003】
従来、上記のような内視鏡手術に用いられる注入針は、太さや長さに違いはあるものの、一般の注射器や点滴で使用されている針と基本的には同じで、先端が鋭利な細管が使用されている。
【0004】
【発明が解決しようとする課題】
更に上記膀胱尿管逆流の治療を例に説明すると、注入針の差し込みは、注入時及び注入後に針穴から注入剤が漏れ出るのを防止するため、注入位置から離れた位置に対して行われる。即ち、注入針は尿管口から離れた位置で膀胱壁内に差し込まれ、その後膀胱壁内に沿って尿管口付近まで突き進められる。
【0005】
内視鏡に装着された注入針を用いる場合、あらかじめ設定された角度と長さで、内視鏡本体から注入針が突出して膀胱壁内に差し込まれる。この場合、注入針の差し込み開始位置は内視鏡で視認することができるが、差し込み開始位置から膀胱壁内に沿って尿管口付近まで突き進められる針先の位置は、注入剤の注入による膨らみを認めるまで、膀胱壁内のどこに位置しているか判別できない問題がある。
【0006】
一方、体外から注入針を差し込む場合、膀胱壁への注入針の差し込み開始位置は、体外から差し込んだ針を膀胱外面に押し当てた時に、膀胱内の内視鏡で観察される膀胱内面の突き上がり位置から知ることができる。
【0007】
しかしながら、針を膀胱外面に押し当てるまでの間、どのあたりに針が位置しているのかが判別できず、針の誘導を医師の経験と勘に頼らざるを得ない問題がある。また、針を膀胱壁内に沿って尿管口付近へと進める時は上記内視鏡に装着された注入針の場合と同様に針先の位置を判別できず、やはり針の誘導を医師の経験と勘に頼らざるを得ない問題がある。
【0008】
特に注入剤の注入による膀胱尿管逆流治療は、注入時の針先の位置が成否にかかわる重要な問題となることから、正確な針先の位置が容易に確認できるようになることがことが望まれている。
【0009】
本発明はこのような従来の問題点にかんがみてなされたもので、臓器内から内視鏡観察しながら、臓器の壁部に注入針を差し込む場合に、内視鏡によって針先の位置を正確かつ容易に確認できるよにすることを目的とする。
【0010】
【課題を解決するための手段】
本発明は、上記目的を達成するために、内視鏡手術に用いられる注入針において、針が外管と内管で二重に構成されており、この外管と内管の間に、光源からの光が後端から入射される光ファイバーが、針の後端部側から針内を通って先端を針先に臨ませて挟み込まれており、内管内が注入剤を導く注入路となっており、外管の後端より突出した内管の後端部を外側から覆って、後端部に注入器接続部が連結されたチューブの先端が嵌め込まれていることを特徴とする発光型注入針を提供するものである。
【0011】
また、本発明は、上記発光型注入針において、注入剤を送り出す注入器への接続側である第一の分岐管と、光源からの光を導く光ケーブルへの接続側である第二の分岐管とに分岐された分岐管が針の後端部に取り付けられており、第一の分岐管にはチューブが通され、第二の分岐管には光ファイバーの後端部が束ねられて収容されていることをその好ましい態様として含むものである。
【0012】
【発明の実施の形態】
本発明に係る発光型注入針の一例を図1〜図4に基づいて説明する。
【0013】
図中1は針、2は分岐管、3はチューブ、4は注入器接続部である。
【0014】
図1に示されるように、針1は、外観上は従来と同様に、先端が鋭利な細管によって構成されたものとなっているが、ほぼ全長に亙って外管5と内管6とで二重に構成されており、しかも両者間に光ファイバー7が挟み込まれたものとなっている。
【0015】
外管5と内管6はそれぞれ従来と同様の金属製の細管(断面円筒形)で構成されているもので、内管6内が注入剤を導く注入路8となっている。また、図2及び図3に示されるように、外管5の内径と内管6の外径は、外管5の内周壁と内管6の外周壁との間に隙間が残される大きさとなっており、この隙間内に光ファイバー7が挟み込まれている。この光ファイバー7は、針1の後端部から上記隙間内に入り、先端を針先に臨ませているものである。
【0016】
図1に示されるように、針1の後端部には、第一の分岐管9と第二の分岐管10とに分岐した分岐管2が取り付けられている。この分岐管2は金属製でもよいが、合成樹脂製とすると容易に製造することができる。
【0017】
第一の分岐管9は、注入剤を送り出すための注射器等の注入器(図示されていない)への連結側で、チューブ3が接続されている。このチューブ3は、例えば点滴等に用いられているものと同様の柔軟なもので、先端(針1側)は、図4に示されるように、第一の分岐管9内を通って前記針1の内管6に接続されている。即ち、内管6の後端部は外管5の後端部より若干突出しており、この部分をチューブ3の先端部に差し込むことで両者が接続されている。また、チューブ3の後端には、注入器を接続するための注入器接続部4が取り付けられている。図1に示される注入器接続部4は、注射器の先端部を嵌め込む連結孔11を有するものとなっている。
【0018】
上記のように、第一の分岐管9に接続されたチューブ3の先端を直接針1の内管6に接続しておくと、注入される注入剤が接触する部品がチューブ3と針1の内管6だけとなり、衛生状態を保ちやすい利点がある。また、チューブ3を介して注入器12を接続できるようにしておくと、注入器を操作する時の動きが直接針1に伝わらないので、注入器の操作がしやすくなる。
【0019】
第二の分岐管10は、光源からの光を導く光ケーブル(図示されていない)への接続側で、図4に示されるように、各光ファイバー7の後端部は束ねられてこの第二の分岐管10内に収納されている。各光ファイバー7の後端面は第二の分岐管10の軸方向外方を向いており、第二の分岐管10に光ケーブルを接続した時に、光ケーブルから出射される光がこの後端面から各光ファイバー7に入射されるものとなっている。そして、各光ファイバー7に入射された光源からの光は、針1の先端に臨む各光ファイバー7の先端面から出射されるものである。
【0020】
、針1を外管5と内管6二重構造とはせず、外管5のみで構成すると、外管5の後端部において、注入器側への接続処理と各光ファイバー7の引き出し処理とがしにくくなることから、これらが容易な上記例のような二重構造とする。
【0021】
また、図面に基づいて説明した例は体外から差し込んで使用するタイプのものであるが、例えば、分岐管2を設けずに直接内管6にチューブ3を接続すると共に、このチューブ3と、針1の後部から引き出された光ファイバー7を内視鏡の管に沿って配置する構成とすることにより、内視鏡に装着するタイプの注入針とすることもできる。
【0022】
【発明の効果】
本発明は、以上説明した通りのものであり、光源からの光を光ファイバー7を介して針先から出射させることができるので、例えば膀胱尿管逆流の治療において、膀胱壁から透けて見えるこの光の位置から針先の位置を内視鏡で把握することができ、経験や勘にたよらず、容易に正確な針先の位置を知ることができる。従って、注入剤の注入位置を治療に最適な位置に容易に調整することが可能となるものである。
【0023】
尚、本発光型注入針は、例示した膀胱尿管逆流の治療の他、傍尿道部に注入を行う尿失禁の治療にも有効であるばかりか、例えば胃、腸等、内視鏡を差し込むことができる臓器の各種治療に応用することもできるものである。
【図面の簡単な説明】
【図1】本発明に係る発光型注入針の一例を示す斜視図である。
【図2】針先部分の断面図である。
【図3】針先の正面図である。
【図4】分岐管部分の断面図である。
【符号の説明】
1 針
2 分岐管
3 チューブ
4 注入器接続部
5 外管
6 内管
7 光ファイバー
8 注入路
9 第一の分岐管
10 第二の分岐管
11 連結孔
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an injection needle used for endoscopic surgery, and more particularly to an injection needle that is inserted into a wall of an organ while observing the endoscope.
[0002]
[Prior art]
For example, for the treatment of vesicoureteral reflux (urine reflux from the bladder to the ureter and kidney), an endoscope is inserted into the bladder and an injection needle attached to the endoscope is inserted into the bladder wall from the bladder. Through the injection needle, an injecting agent (for example, fat or collagen) is injected into the bladder wall around the ureteral opening that opens to the bladder to narrow the ureteral opening. In addition to the injection from the bladder, the injection needle is inserted from outside the bladder by inserting an injection needle from outside the body such as the vagina wall or perineum while observing with an endoscope from the inside of the bladder. Things are also done.
[0003]
Conventionally, infusion needles used for endoscopic surgery as described above are basically the same as needles used in general syringes and infusions, although there are differences in thickness and length, and the tip is sharp. Capillaries are used.
[0004]
[Problems to be solved by the invention]
Further, the treatment of the above vesicoureteral reflux will be described as an example. Insertion of the injection needle is performed at a position away from the injection position in order to prevent the injection agent from leaking from the needle hole during and after the injection. . That is, the injection needle is inserted into the bladder wall at a position away from the ureteral opening, and then pushed forward to the vicinity of the ureteral opening along the bladder wall.
[0005]
When using an infusion needle attached to an endoscope, the infusion needle protrudes from the endoscope body and is inserted into the bladder wall at a preset angle and length. In this case, the insertion start position of the injection needle can be visually confirmed with an endoscope, but the position of the needle tip that is advanced from the insertion start position to the vicinity of the ureteral opening along the bladder wall is swollen by injection of the injection. Until it is recognized, there is a problem that it is impossible to determine where it is located in the bladder wall.
[0006]
On the other hand, when the injection needle is inserted from outside the body, the insertion start position of the injection needle into the bladder wall is determined by pushing the inner surface of the bladder observed with an endoscope inside the bladder when the needle inserted from outside the body is pressed against the outer surface of the bladder. You can know from the up position.
[0007]
However, until the needle is pressed against the outer surface of the bladder, it is impossible to determine where the needle is located, and there is a problem that the guidance of the needle must be relied on the experience and intuition of the doctor. In addition, when the needle is advanced along the bladder wall to the vicinity of the ureteral opening, the position of the needle tip cannot be determined as in the case of the injection needle attached to the endoscope, and the needle is guided by the doctor. There is a problem that depends on experience and intuition.
[0008]
In particular, vesicoureteral reflux treatment by infusion is an important issue related to the success or failure of the needle tip at the time of injection, so the correct needle tip position can be easily confirmed. It is desired.
[0009]
The present invention has been made in view of such conventional problems. When an injection needle is inserted into the wall of an organ while observing the endoscope from inside the organ, the position of the needle tip is accurately determined by the endoscope. The purpose is to make it easy to confirm.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in an injection needle used for endoscopic surgery, the needle is doubled by an outer tube and an inner tube, and a light source is provided between the outer tube and the inner tube. optical fiber light is incident from the rear end of the can from the rear end side of the needle through the inner needle are sandwiched so as to face the tip needle point, become the injection path whose inner tube leads to infusate A light-emitting type injection, characterized in that the rear end portion of the inner tube protruding from the rear end of the outer tube is covered from the outside, and the distal end of the tube connected to the injector connection portion is fitted into the rear end portion. A needle is provided.
[0011]
Further, in the above-emitting type injection needle, note a first branch pipe Irizai a side connected to the injector for feeding a second is a connection side to the optical cable for guiding light from the light source branch A branch pipe branched into a pipe is attached to the rear end of the needle, the tube is passed through the first branch pipe, and the rear end of the optical fiber is bundled and accommodated in the second branch pipe. and that a call is intended to include as preferred embodiments thereof.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An example of the light emitting injection needle according to the present invention will be described with reference to FIGS.
[0013]
In the figure, 1 is a needle, 2 is a branch tube, 3 is a tube, and 4 is an injector connection.
[0014]
As shown in FIG. 1, the needle 1 is formed of a thin tube with a sharp tip, as in the prior art. However, the outer tube 5 and the inner tube 6 are almost entirely extended. The optical fiber 7 is sandwiched between the two.
[0015]
Each of the outer tube 5 and the inner tube 6 is composed of a thin metal tube (cylindrical cross-sectional shape) similar to the conventional one, and the inside of the inner tube 6 serves as an injection path 8 for introducing an injection agent. As shown in FIGS. 2 and 3, the inner diameter of the outer tube 5 and the outer diameter of the inner tube 6 are such that a gap is left between the inner peripheral wall of the outer tube 5 and the outer peripheral wall of the inner tube 6. The optical fiber 7 is sandwiched in the gap. The optical fiber 7 enters the gap from the rear end of the needle 1 and has its tip facing the needle tip.
[0016]
As shown in FIG. 1, a branch pipe 2 branched to a first branch pipe 9 and a second branch pipe 10 is attached to the rear end portion of the needle 1. The branch pipe 2 may be made of metal, but can be easily manufactured if it is made of synthetic resin.
[0017]
The first branch pipe 9 is connected to the tube 3 on the connection side to an injector (not shown) such as a syringe for delivering an injection. The tube 3 is a flexible one similar to that used for infusion, for example, and the tip (needle 1 side) passes through the first branch tube 9 as shown in FIG. 1 to the inner pipe 6. That is, the rear end portion of the inner tube 6 slightly protrudes from the rear end portion of the outer tube 5, and the two are connected by inserting this portion into the distal end portion of the tube 3. Further, an injector connecting portion 4 for connecting an injector is attached to the rear end of the tube 3. The injector connecting portion 4 shown in FIG. 1 has a connecting hole 11 into which the tip of the syringe is fitted.
[0018]
As described above, when the tip of the tube 3 connected to the first branch pipe 9 is directly connected to the inner pipe 6 of the needle 1, the parts that come into contact with the injected infusate are the tube 3 and the needle 1. Only the inner pipe 6 is provided, and there is an advantage that hygiene can be easily maintained. If the injector 12 can be connected via the tube 3, since the movement when operating the injector is not directly transmitted to the needle 1, it becomes easier to operate the injector.
[0019]
The second branch tube 10 is connected to an optical cable (not shown) that guides light from the light source. As shown in FIG. 4, the rear ends of the optical fibers 7 are bundled together. It is stored in the branch pipe 10. The rear end face of each optical fiber 7 faces outward in the axial direction of the second branch pipe 10. When an optical cable is connected to the second branch pipe 10, light emitted from the optical cable is transmitted from the rear end face to each optical fiber 7. It is incident on. The light from the light source incident on each optical fiber 7 is emitted from the tip surface of each optical fiber 7 facing the tip of the needle 1.
[0020]
Note that the needle 1 without the double structure of the outer tube 5 and inner tube 6, if you configured only by the outer tube 5, at the rear end of the outer tube 5, the process of connecting to the injector side and the optical fiber 7 withdrawal process and that is less likely to, and shall be the double structure like these easy above example.
[0021]
The example described with reference to the drawings is of a type that is used by being inserted from outside the body. For example, the tube 3 is connected directly to the inner tube 6 without providing the branch tube 2, and the tube 3 and the needle By adopting a configuration in which the optical fiber 7 drawn out from the rear part of 1 is arranged along the tube of the endoscope, an injection needle of the type attached to the endoscope can be obtained.
[0022]
【The invention's effect】
The present invention is as described above, and since the light from the light source can be emitted from the needle tip via the optical fiber 7, for example, in the treatment of vesicoureteral reflux, this light that can be seen through the bladder wall The position of the needle tip can be grasped from the position of the needle with an endoscope, and the accurate needle tip position can be easily known without depending on experience and intuition. Therefore, the injection position of the injection can be easily adjusted to the optimal position for treatment.
[0023]
In addition to the illustrated treatment of vesicoureteral reflux, the present luminescent injection needle is effective not only for the treatment of urinary incontinence that is injected into the paraurethral region, but also for insertion of an endoscope such as the stomach and intestine. It can also be applied to various treatments of organs that can be used.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a light-emitting injection needle according to the present invention.
FIG. 2 is a cross-sectional view of a needle tip portion.
FIG. 3 is a front view of a needle tip.
FIG. 4 is a cross-sectional view of a branch pipe portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Needle 2 Branch pipe 3 Tube 4 Injector connection part 5 Outer pipe 6 Inner pipe 7 Optical fiber 8 Injection path 9 First branch pipe 10 Second branch pipe 11 Connection hole

Claims (2)

内視鏡手術に用いられる注入針において、針が外管と内管で二重に構成されており、この外管と内管の間に、光源からの光が後端から入射される光ファイバーが、針の後端部側から針内を通って先端を針先に臨ませて挟み込まれており、内管内が注入剤を導く注入路となっており、外管の後端より突出した内管の後端部を外側から覆って、後端部に注入器接続部が連結されたチューブの先端が嵌め込まれていることを特徴とする発光型注入針。In an injection needle used for endoscopic surgery, the needle is composed of an outer tube and an inner tube, and an optical fiber through which light from a light source is incident from the rear end is interposed between the outer tube and the inner tube. The inner tube protrudes from the rear end of the outer tube through the needle from the rear end side of the needle, with the tip facing the needle tip, and the inner tube serves as an injection path for introducing the injection agent. A light emitting injection needle characterized in that a distal end of a tube that covers the rear end portion of the tube from the outside and has a syringe connecting portion connected to the rear end portion is fitted . 注入剤を送り出す注入器への接続側である第一の分岐管と、光源からの光を導く光ケーブルへの接続側である第二の分岐管とに分岐された分岐管が針の後端部に取り付けられており、第一の分岐管にはチューブが通され、第二の分岐管には光ファイバーの後端部が束ねられて収容されていることを特徴とする請求項の発光型注入針。A branch pipe branched into a first branch pipe which is a connection side to an injector for delivering an injection and a second branch pipe which is a connection side to an optical cable for guiding light from a light source is a rear end portion of the needle The light-emitting injection device according to claim 1, wherein a tube is passed through the first branch pipe, and a rear end portion of the optical fiber is bundled and accommodated in the second branch pipe. needle.
JP12340899A 1999-04-30 1999-04-30 Luminescent injection needle Expired - Lifetime JP4268260B2 (en)

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CN102921076A (en) * 2012-11-13 2013-02-13 江台安 Injection sleeve group
KR101699229B1 (en) * 2015-09-03 2017-01-25 부산대학교 산학협력단 Light guide injection device
KR102463739B1 (en) * 2020-12-29 2022-11-07 주식회사 솔메딕스 Portable Light Guide Injection Device
CN113208706B (en) * 2021-04-30 2022-06-03 哈尔滨工业大学 Steerable pjncture needle with shape perception function

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