WO1998055169A1 - Aiguille anesthesique spinale - Google Patents

Aiguille anesthesique spinale Download PDF

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Publication number
WO1998055169A1
WO1998055169A1 PCT/JP1997/001870 JP9701870W WO9855169A1 WO 1998055169 A1 WO1998055169 A1 WO 1998055169A1 JP 9701870 W JP9701870 W JP 9701870W WO 9855169 A1 WO9855169 A1 WO 9855169A1
Authority
WO
WIPO (PCT)
Prior art keywords
slider
needle
knob
rear end
needle tube
Prior art date
Application number
PCT/JP1997/001870
Other languages
English (en)
Japanese (ja)
Inventor
Ryochi Enishi
Akio Higuchi
Hayato Hyugaji
Original Assignee
Soken Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Soken Co., Ltd. filed Critical Soken Co., Ltd.
Priority to PCT/JP1997/001870 priority Critical patent/WO1998055169A1/fr
Publication of WO1998055169A1 publication Critical patent/WO1998055169A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3401—Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00115—Electrical control of surgical instruments with audible or visual output

Definitions

  • Known spinal anesthesia needles consist of a needle tube, a needle base attached to the rear end of the needle tube, a mandolin inserted through the needle tube from the needle base, and a knob attached to the rear end of the mandolin. It had been.
  • the tip of the needle tube was a lancet point force formed by diagonally cutting a cylindrical needle tube body, or a pencil point formed in a non-perforated cone.
  • the hole at the Lancet point was at the tip of the needle tube, and the hole at the pencil point was at the peripheral surface behind the leading end of the needle tube.
  • the lancet point is good in that the hole is at the tip of the needle tube, and the cerebrospinal fluid flows into the needle tube as soon as the mandolin is removed, so that the time required to confirm the cerebrospinal fluid reflux is short. Since the tip becomes a sharp cutting edge, the dura was damaged during puncture, and there was a problem in that headache was likely to occur after spinal anesthesia.
  • the pencil point is good in that the tip of the needle tube is not a sharp cutting edge and does not damage the dura at the time of puncture, thereby reducing the occurrence of headache after spinal anesthesia. However, there is a problem that the time to check the cerebrospinal fluid may be prolonged even if the tip reaches the subarachnoid space but does not reach the hole. Disclosure of the invention
  • the present invention has been made to solve the above-mentioned problem, and an object of the present invention is to make it possible to objectively confirm that the tip of the needle tube has reached the subarachnoid space, not by touch.
  • An object of the present invention is to provide a spinal anesthesia needle which has no possibility of damaging the dura at the time of puncture and has a quick confirmation of CSF reflux.
  • Means adopted by the present invention to achieve the above object include a needle tube, a needle base attached to the rear end of the needle tube, a mandolin inserted from the needle base into the needle tube, and a mandrel of the mandrel.
  • a spinal anesthesia needle consisting of a knob attached to the rear end and connected to the needle base
  • a slider is fixed to the rear end of the mandolin, and the slider is reciprocated between the advanced position and the retracted position.
  • the slider is provided with a knob for urging the slider forward or backward.
  • the tip of the needle tube is formed in a truncated cone shape with a hole at the top center, and the tip of the mandolin is formed in a cone shape.
  • the vertex angle of the conical mandolin tip ranges from 15 degrees to 50 degrees.
  • the tip of the needle should be skin, subcutaneous tissue, supraspinatus
  • the ligament, the interspinous ligament, the yellow ligament, the epidural space, the dura, and the arachnoid sequentially pass to the subarachnoid space, but the puncture resistance is relatively large because the other tissues are relatively dense except the subarachnoid space.
  • This piercing resistance pushes the mandolin backwards, causing the slider integral with the mandolin to move to the retracted position against the spring.
  • the puncture resistance decreases sharply, so when urging the slider forward, the spring extends and pushes out the mandlin with the slider.
  • the knob is made transparent, the displacement of this slider can be easily observed. Therefore, whether the needle tip has reached the subarachnoid space can be confirmed by visually observing that the slider has moved to the retracted position.
  • the slider be colored in a clear color such as red or blue, and that the knob be transparent or that the colored portion of the slider protrude from the knob.
  • the puncture resistance is high until the needle tip reaches the subarachnoid space, so the slider does not advance even if the pin is pushed forward with a little force, but when the needle reaches the subarachnoid space, the puncture resistance sharply decreases, so it is slightly stronger
  • the slider moves to the advanced position, so it can be confirmed that the needle tip has reached the subarachnoid space.
  • pull the knob to withdraw the mandolin from the needle tube and allow the spinal fluid in the subarachnoid space to flow back into the needle tube.
  • the hole in the needle tube opens at the tip, so that mandulin is removed and spinal fluid flows into the needle tube at the same time. Therefore, the time to confirm CSF reflux is short.
  • a syringe containing a local anesthetic is connected to the needle base, and the anesthetic is injected into the subarachnoid space through the hole in the needle tube. Since the hole opens at the tip of the needle tube located in the subarachnoid space, the local anesthetic is reliably injected into the subarachnoid space, similar to the lancet point.
  • FIG. 1 is a plan view showing the appearance of the spinal anesthesia needle of the present invention.
  • FIG. 2 is an enlarged view showing a cross section of a main part of the spinal anesthesia needle of FIG. 1, in which the slider is at a forward position.
  • FIG. 3 is a view corresponding to FIG. 2 showing a state where the slider is at a retracted position.
  • FIG. 4 is a view corresponding to FIG. 2, showing a state in which the slider is pulled out together with the mandolin.
  • FIG. 5 is a diagram corresponding to FIG. 2 of the second embodiment.
  • FIG. 6 is a diagram corresponding to FIG. 3 of the second embodiment.
  • FIG. 7 is a diagram corresponding to FIG. 2 of the third embodiment.
  • FIG. 8 is a diagram corresponding to FIG. 3 of the third embodiment.
  • FIG. 9 is a diagram corresponding to FIG. 2 of the fourth embodiment.
  • FIG. 10 is a diagram corresponding to FIG. 3 of the fourth embodiment.
  • the spinal anesthesia needle of the first embodiment shown in FIG. 1 comprises a circular needle tube 1, a needle base fixed to the rear end of the needle tube 1, a mandolin 3 penetrating the needle tube 1 from the needle base, and
  • the slider 4 includes a slider 4 fixed to the rear end of the mandrel 3 and a knob 5 that slidably supports the slider 4.
  • the tip 31 of the mandolin 3 is formed in a conical shape, for example, a cone having an apex angle of 15 to 50 degrees
  • the tip 11 of the needle tube 1 is a cone having the same inclination angle as the tip 31 of the mandolin. It is formed in a trapezoidal shape.
  • the knob 5 is made of a transparent resin, and the slider 4 inside can be easily recognized from the outside.
  • the rear end of the needle tube 1 is inserted into a metal base 6 housed in a synthetic resin needle base 2, and the needle tube 1, the needle base 2 and the base 6 are integrated via an adhesive resin.
  • Fixed to The base 6 guides the insertion of the mandolin 3 into the needle tube 1.
  • a shaft hole 7 extends from the rear end of the base 6 to the rear end surface of the needle base 2, and the shaft portion 8 of the slider 4 is slidably inserted into the shaft hole 7.
  • a threaded protrusion 9 is formed on the rear outer peripheral surface of the needle base 2, and the protrusion 9 is formed on the inner peripheral surface of the front part of the knob 5 so that it is screwed into the threaded recess 10 and the knob 5 is attached to and detached from the needle base 1.
  • a slider plate 17 is formed in the knob 5 to abut the rear end face of the needle base 2, and a shaft hole 12 of the same diameter as the shaft hole 7 of the needle base 2 is made in the partition plate 17 to move the slider. Pass the shaft 8 of 4. Behind the partition 17 of the knob 5, the collar 13 is fitted over the shaft 8 of the slider 4 and fixed. Attach the coil spring 14 to the rear shaft 8 of the collar 13, and attach the lid 15 to the rear end of the knob 5 detachably. The coil spring 14 compressed between the collar 13 and the lid 15 presses the collar 13 against the partition 17 to hold the slider 4 in the forward position.
  • the rear end of the conical tip 3 1 of the mandolin 3 is the needle tube 1 Protrudes by a length a from the front end of the frusto-conical tip 1 1.
  • This spinal anesthesia needle is set so as to be compressed by the length b by the puncture resistance of the mandolin 3 before the coil spring 14 reaches the subarachnoid space.
  • the distal end 3 1 The rear end is exposed from the distal end of the needle tube 1 by the length a from the front end.However, when penetrating the human body, the puncture resistance pushes the mandolin 3 backward and is integrated with the mandolin 3.
  • the slider 4 moves to the retracted position. However, since a ⁇ b, the entire conical tip 31 of the mandolin 3 is always located ahead of the frustoconical tip 11 of the needle tube 1. As a result, as shown in FIG. 3, the mandolin tip 31 and the needle tube tip 11 form a substantially flush cone.
  • the reaching of the spinal anesthesia needle to the subarachnoid space can be easily confirmed by the movement of the collar 13 seen from the knob 5 from the retracted position to the advanced position.
  • the judgment based on the position of the collar 13 is more reliable than the conventional judgment based on touch.
  • the advancing position of the mandolin 3 was defined by bringing the slider 13 of the slider 4 into contact with the diaphragm 17 provided on the knob 5, but without the diaphragm, the collar 13 was not provided. Can be brought into contact with the rear end face of the needle base 2 to define the advance position of the mandolin 3.
  • a mask 18 partially opening on the inner peripheral surface of the transparent knob 5 is fitted, and the collar 13 of the slider 4 is formed in a cylindrical shape.
  • the portion exposed from the opening of the mask 18 on the outer peripheral surface of the collar 13 is colored 19.
  • Fig. 5 As shown in Fig. 6, when the slider 4 moves forward, the coloring 19 of the color 13 is visible from the outside, and in the retracted position of the slider 4 shown in Fig. 6, the coloring 19 of the color 13 becomes invisible. By doing so, they can be confirmed.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Anesthesiology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne une aiguille anesthésique spinale comprenant un mandrin (3) s'étendant à travers un tube (1) à aiguille ainsi qu'une base (2) d'aiguille, et un manche (5) monté à l'extrémité arrière du mandrin, et servant à effectuer une anesthésie spinale par une traction exercée sur le mandrin (3) avec le manche (5) après que l'extrémité (11) de la pointe du tube à aiguille ait percé l'espace sous-arachnoïdien, et au lieu d'insérer une aiguille d'une seringue, contenant un anesthésique local. On a prévu un ressort (14) destiné à fixer une coulisse (4) à l'extrémité arrière du mandrin (3), afin que le manche (5) contienne la coulisse (4) pour que celle-ci coulisse entre une position avant et une position arrière et pour permettre son déplacement pouvant être observé visuellement, et afin de faire venir la coulisse (4) dans le manche (5). Lorsque l'extrémité (11) de la pointe du tube à aiguille et une extrémité (31) de la pointe du mandrin passent à travers un tissu soumis à une résistance à la piqûre, le ressort (14) est contracté afin de rétracter la coulisse (4) en position arrière. Lorsque l'extrémité (11) de la pointe du tube à aiguille et l'extrémité (31) de la pointe du mandrin atteignent l'espace sous-arachnoïdien, où ils ne rencontrent plus de résistance à la piqûre, le ressort (14) repousse la coulisse (4) en position avant, laquelle peut être reconnue rapidement.
PCT/JP1997/001870 1997-06-02 1997-06-02 Aiguille anesthesique spinale WO1998055169A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/001870 WO1998055169A1 (fr) 1997-06-02 1997-06-02 Aiguille anesthesique spinale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/001870 WO1998055169A1 (fr) 1997-06-02 1997-06-02 Aiguille anesthesique spinale

Publications (1)

Publication Number Publication Date
WO1998055169A1 true WO1998055169A1 (fr) 1998-12-10

Family

ID=14180615

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/001870 WO1998055169A1 (fr) 1997-06-02 1997-06-02 Aiguille anesthesique spinale

Country Status (1)

Country Link
WO (1) WO1998055169A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004091702A1 (fr) * 2003-04-15 2004-10-28 Doctor Japan Co., Ltd. Aiguille medicale anesthesique
WO2014015648A1 (fr) * 2012-07-23 2014-01-30 上海市同济医院 Aiguille de cathéter à demeure de blocage de nerf ayant un dispositif de mesure de résistance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0536436Y2 (fr) * 1990-06-05 1993-09-14
JPH0630205Y2 (ja) * 1991-01-30 1994-08-17 方希 百合野 持続局所麻酔セット
JP3018360U (ja) * 1995-05-19 1995-11-21 株式会社八光電機製作所 スパイナル針

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0536436Y2 (fr) * 1990-06-05 1993-09-14
JPH0630205Y2 (ja) * 1991-01-30 1994-08-17 方希 百合野 持続局所麻酔セット
JP3018360U (ja) * 1995-05-19 1995-11-21 株式会社八光電機製作所 スパイナル針

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MASAYOSHI FURUHASHI, EMI SASAMOTO, "All About Operative Apparatus, Illustrated. Part 3. Anesthetic Apparatus (Including Apparatus for First Aid and Resuscitation) (in Japanese)", ISHIYAKU SHUPPAN K.K., 25 July 1968, p. 99. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004091702A1 (fr) * 2003-04-15 2004-10-28 Doctor Japan Co., Ltd. Aiguille medicale anesthesique
WO2014015648A1 (fr) * 2012-07-23 2014-01-30 上海市同济医院 Aiguille de cathéter à demeure de blocage de nerf ayant un dispositif de mesure de résistance

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