WO2016152496A1 - Aiguille flexible à usage médical - Google Patents

Aiguille flexible à usage médical Download PDF

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Publication number
WO2016152496A1
WO2016152496A1 PCT/JP2016/057097 JP2016057097W WO2016152496A1 WO 2016152496 A1 WO2016152496 A1 WO 2016152496A1 JP 2016057097 W JP2016057097 W JP 2016057097W WO 2016152496 A1 WO2016152496 A1 WO 2016152496A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
groove
flexible needle
flexible
catheter
Prior art date
Application number
PCT/JP2016/057097
Other languages
English (en)
Japanese (ja)
Inventor
中島　弘明
保臣 田中
英昭 請関
Original Assignee
メディキット株式会社
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 メディキット株式会社 filed Critical メディキット株式会社
Priority to JP2017508177A priority Critical patent/JPWO2016152496A1/ja
Publication of WO2016152496A1 publication Critical patent/WO2016152496A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09—Guide wires

Definitions

  • the present invention relates to a medical flexible needle, and more particularly to a flexible needle that is used in a needle assembly for introducing a catheter to facilitate a procedure.
  • a catheter may be introduced into a patient's blood vessel using a needle assembly for the purpose of infusion or dialysis.
  • the catheter is put on the needle of the needle assembly, punctured into the patient's body together with the needle, and the catheter is left in the blood vessel by removing only the needle.
  • the needle of the needle assembly often has a hollow structure similar to an injection needle.
  • reverse blood passes through the needle (flashback), but if this is pulled out to an appropriate part of the needle assembly and visually confirmed, it can be confirmed that the needle tip has captured the inside of the blood vessel. .
  • the catheter since the catheter is left in the patient's body for a certain period of time, it needs to be inserted deeper into the blood vessel than the injection needle.
  • the needle of the needle assembly since the needle of the needle assembly is covered with the catheter, the outer diameter is necessarily smaller than the inner diameter of the catheter. That is, the needle of the needle assembly is often longer and thinner than the needle.
  • Patent Documents 1 and 2 disclose related techniques related to a needle assembly used for introducing a catheter.
  • the needle of the needle assembly is extremely long compared to a normal injection needle, it is not an easy procedure for medical staff to accurately position the needle tip deep inside the blood vessel.
  • the needle tip can penetrate the blood vessel and pierce unintended parts of the patient's body tissue.
  • the present invention has been made in view of such a discovery, and an object thereof is to provide a medical flexible needle that can easily introduce a needle tip into a blood vessel.
  • a flexible needle for introducing a catheter into a blood vessel includes a needle tip that can be used for puncturing, a surface on which the catheter is slidably fitted and guided, and the needle A pipe portion having a flow path that communicates first and penetrates the inside; a spiral that continuously circulates the surface one or more times; a plurality of discontinuous spirals that circulate around the surface; A plurality of arc-shaped grooves of less than one turn.
  • FIG. 1 is a perspective view of a needle assembly including a flexible needle according to one embodiment.
  • FIG. 2A is an elevational view of a flexible needle according to one embodiment.
  • FIG. 2B is an elevation view of a flexible needle according to another embodiment.
  • FIG. 2C is an elevational view of a flexible needle according to yet another embodiment.
  • FIG. 3A is an elevational view of a flexible needle according to a different embodiment.
  • FIG. 3B is an elevational view of a flexible needle according to yet another embodiment.
  • FIG. 4A is an elevation view illustrating a process of manufacturing a flexible needle according to one embodiment.
  • FIG. 4B is an elevational view illustrating a process for manufacturing a flexible needle according to another embodiment.
  • FIG. 4C is an elevational view illustrating a process for manufacturing a flexible needle according to yet another embodiment.
  • FIG. 5A is an elevation view illustrating a spiral state when the flexible needle is bent.
  • FIG. 5B is an elevation view illustrating a state where the flexible needle is bent in the flexible needle according to another embodiment.
  • FIG. 6 is a schematic cross-sectional view showing how a catheter is guided into a blood vessel, and is a case where a rigid needle is used.
  • FIG. 7 is a schematic cross-sectional view showing how a catheter is guided into a blood vessel, and is a case using a flexible needle.
  • the medical flexible needle according to an embodiment of the present invention is not necessarily limited to this, but is used by being incorporated into the needle assembly 1 shown in FIG.
  • the needle assembly 1 generally comprises a handle 3 and a flexible needle 9 for puncture extending forward from the handle 3.
  • the catheter 7 is put on the flexible needle 9 and introduced into the blood vessel by being punctured with the flexible needle 9 into the patient's body.
  • the flexible needle 9 can be retracted by a spring mechanism after use, and the button 5 for operating the spring mechanism has its head looked into the side surface of the handle 3.
  • the flexible needle 9 can be used for a manual retraction type or a fixed needle assembly.
  • the flexible needle 9 is made of an appropriate metal such as stainless steel.
  • an appropriate elastic material including a resin may be used instead of the metal. Examples of such a resin include polyether ketone (PEEK), polycarbonate (PC), polyphenylene sulfide (PPS), and a liquid crystal polymer.
  • the entire flexible needle 9 is generally a hollow tube, but the needle tip is sharply pointed so that it can be used for puncture.
  • the catheter 7 is guided by being slidably fitted to the tube portion.
  • the cavity inside the tube portion communicates with the needle tip and penetrates the entire tube portion, and acts as a flow path for flowing reverse blood when the needle tip catches a blood vessel.
  • the surface of the tube portion of the flexible needle 9 includes a spiral groove 9S that goes around the surface one or more times.
  • the groove 9S may reach the needle tip at the front and may reach the rear end at the rear.
  • the groove 9S may draw a spiral with an equal pitch throughout the groove 9S, or may draw a spiral with a pitch different from that of the other part in a specific part 9P as referred to by reference numeral 9S ′ in FIG. 2B. .
  • the pitch may change continuously.
  • the pitch of the grooves 9S ' may be shorter or longer than the others.
  • the groove 9S may be limited to a specific portion 9P '.
  • Flexibility depends on the pitch of the spiral, and the narrower the pitch, the easier it is to flex. Therefore, the ease of bending can be adjusted by the pitch of the spiral.
  • the pitch can be changed at the specific part or the groove can be limited to the specific part as shown in FIGS. 2B and 2C.
  • the groove 9S is discontinuous and may be composed of a plurality of small spiral portions.
  • FIG. 3A is an example thereof, and each spiral portion ends around the flexible needle 9 in one round.
  • Each spiral portion may of course have one or more rounds or less than one round.
  • the groove 9S is not a spiral, but may be an arc of less than one round surrounding the flexible needle 9, as illustrated in FIG. 3B.
  • Each arc may be deviated in the circumferential direction with respect to the adjacent arc. In the example of FIG. 3B, each arc is deviated by 90 degrees, but the deviation may be an arbitrary angle.
  • the groove 9S is a portion that is easily deformed, the flexible needle 9 is urged to bend flexibly. If the groove 9S extends over the entire flexible needle 9 as shown in FIG. Will not concentrate.
  • the groove 9S may be a groove that does not penetrate toward the inside of the flexible needle, but may be a penetration groove.
  • a through-groove may be always open, or may be normally closed and open only when the pipe portion is bent, and the surface thereof communicates with the internal flow path. In the latter case, the bending of the flexible needle is absorbed exclusively by the opening and closing of the through-groove, and the space between the spirals hardly needs to be deformed.
  • the groove 9S as described above can be formed by utilizing machining, laser processing, water jet processing, etching, or the like.
  • rotation R and translational motion F are given to the flexible needle 9 while irradiating the flexible needle 9 with the laser beam L.
  • a groove is formed at the irradiation point S, and the irradiation point S advances spirally on the surface of the flexible needle 9, so that a spiral groove 9S can be formed.
  • a tension T may be applied to the flexible needle 9 as shown in FIG. 4B.
  • the flexible needle 9 tends to shrink like a spring, so that the open groove 9S is closed, so that the groove 9S can be formed only when the flexible needle 9 is bent.
  • a similar structure can be formed by winding the steel strip 19 in a spiral shape.
  • coating may be applied to the entire flexible needle 9 or limited to the groove 9S.
  • the open groove 9S it can be closed with a coating and can be opened only when the flexible needle 9 is bent.
  • a coating may be applied for lubrication or other purposes.
  • the flexible needle 9 may be made of a shape memory alloy or a shape memory resin.
  • the groove 9S can be closed or opened by the shape memory effect.
  • the groove 9S narrows on the inner periphery side of the bend, and the groove 9S expands or opens on the outer periphery side of the bend. Accordingly, the groove 9S prompts the flexible needle 9 to bend flexibly. Furthermore, since the bending is absorbed exclusively by the groove 9S, the other portions can easily maintain their shapes. This prevents the flexible needle 9 from being crushed in the radial direction, thereby preventing the internal cavity from becoming narrow.
  • the groove 9AS generally has a spiral shape, but may partially include an S-shaped or N-shaped structure 9AC.
  • the structure 9AC engages with each other when the groove 9AS is about to spread and prevents the part from spreading.
  • the catheter 7 is used by being put on the needle 9.
  • the medical staff operates the needle assembly 1 with the finger 11 to puncture the needle 9 into the patient's body (arm) 13 and attempt to guide the needle tip into the blood vessel 15. If the medical staff is immature and the needle 9 is rigid, the needle tip may penetrate the blood vessel 15 and reach deeper into the patient's body 13.
  • the flexible needle 9 after puncturing, the flexible needle 9 is easily bent along the blood vessel 15, thereby preventing the needle tip from penetrating the blood vessel.
  • the spiral groove 9 ⁇ / b> S prompts the flexible needle 9 to bend flexibly, and prevents the internal flow path from becoming narrow. It is confirmed that the needle tip is caught in the blood vessel by being drawn out to an appropriate part of the needle assembly 1 without being blocked by the reverse blood passing through the flexible needle 9 or by seeping out from the groove 9S. To help.
  • a flexible medical needle that is easy to bend and prevents the internal cavity from being narrowed even if it is bent is provided.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Anesthesiology (AREA)
  • Public Health (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Vascular Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

Une aiguille flexible servant à l'introduction d'un cathéter dans un vaisseau sanguin comporte : une section de tube comprenant une pointe d'aiguille qui peut être utilisée pour percer, une surface sur laquelle le cathéter est monté de manière coulissante et guidé, et un trajet d'écoulement qui communique avec la pointe de l'aiguille et passe à travers l'intérieur de celle-ci ; et une rainure en forme de spirale qui s'enroule autour de la surface en au moins une boucle continue, une pluralité de rainures en forme de spirale qui s'enroulent autour de la surface et qui sont discontinues, ou une pluralité de rainures en arc qui s'enroulent autour de la surface sans l'entourer complètement.
PCT/JP2016/057097 2015-03-23 2016-03-08 Aiguille flexible à usage médical WO2016152496A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017508177A JPWO2016152496A1 (ja) 2015-03-23 2016-03-08 医療用可撓針

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015059412 2015-03-23
JP2015-059412 2015-03-23

Publications (1)

Publication Number Publication Date
WO2016152496A1 true WO2016152496A1 (fr) 2016-09-29

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PCT/JP2016/057097 WO2016152496A1 (fr) 2015-03-23 2016-03-08 Aiguille flexible à usage médical
PCT/JP2016/057100 WO2016152497A1 (fr) 2015-03-23 2016-03-08 Corps flexible à usage médical

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/057100 WO2016152497A1 (fr) 2015-03-23 2016-03-08 Corps flexible à usage médical

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WO (2) WO2016152496A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019070076A1 (fr) * 2017-10-06 2019-04-11 株式会社アルチザンラボ Aiguille à demeure et méthode d'utilisation d'une aiguille à demeure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011078525A (ja) * 2009-10-06 2011-04-21 Olympus Corp ガイド装置
JP2011125632A (ja) * 2009-12-21 2011-06-30 Terumo Corp 超音波ガイド穿刺針及び留置針
JP2011125389A (ja) * 2009-12-15 2011-06-30 Terumo Corp 留置針
JP2012515016A (ja) * 2009-01-12 2012-07-05 ベクトン・ディキンソン・アンド・カンパニー 柔軟な特徴部を備える内在の硬いカテーテル及び／又は柔軟なカテーテルアタッチメントの少なくとも１つを有する輸液セット及び／又はパッチポンプ
JP2013176559A (ja) * 2012-02-28 2013-09-09 Spiration Inc 肺生検針
JP2014200551A (ja) * 2013-04-08 2014-10-27 オリンパス株式会社 穿刺針

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005329062A (ja) * 2004-05-20 2005-12-02 Terumo Corp イントロデューサーシース
US20110054487A1 (en) * 2009-09-02 2011-03-03 Circulite, Inc. Coaxial transseptal guide-wire and needle assembly
JP5392783B2 (ja) * 2010-06-11 2014-01-22 朝日インテック株式会社 医療用ガイドワイヤ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012515016A (ja) * 2009-01-12 2012-07-05 ベクトン・ディキンソン・アンド・カンパニー 柔軟な特徴部を備える内在の硬いカテーテル及び／又は柔軟なカテーテルアタッチメントの少なくとも１つを有する輸液セット及び／又はパッチポンプ
JP2011078525A (ja) * 2009-10-06 2011-04-21 Olympus Corp ガイド装置
JP2011125389A (ja) * 2009-12-15 2011-06-30 Terumo Corp 留置針
JP2011125632A (ja) * 2009-12-21 2011-06-30 Terumo Corp 超音波ガイド穿刺針及び留置針
JP2013176559A (ja) * 2012-02-28 2013-09-09 Spiration Inc 肺生検針
JP2014200551A (ja) * 2013-04-08 2014-10-27 オリンパス株式会社 穿刺針

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WO2016152497A1 (fr) 2016-09-29
JPWO2016152496A1 (ja) 2018-01-18
JPWO2016152497A1 (ja) 2018-01-11

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