WO1996018429A1 - Canule pour ponctions dans les vaisseaux - Google Patents

Canule pour ponctions dans les vaisseaux Download PDF

Info

Publication number
WO1996018429A1
WO1996018429A1 PCT/EP1995/004940 EP9504940W WO9618429A1 WO 1996018429 A1 WO1996018429 A1 WO 1996018429A1 EP 9504940 W EP9504940 W EP 9504940W WO 9618429 A1 WO9618429 A1 WO 9618429A1
Authority
WO
WIPO (PCT)
Prior art keywords
cannula
inlet opening
tip
puncture
needle
Prior art date
Application number
PCT/EP1995/004940
Other languages
German (de)
English (en)
Inventor
Xiaomeng Liu
Rainer Dietz
Original Assignee
Xiaomeng Liu
Rainer Dietz
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 Xiaomeng Liu, Rainer Dietz filed Critical Xiaomeng Liu
Priority to AU43449/96A priority Critical patent/AU4344996A/en
Publication of WO1996018429A1 publication Critical patent/WO1996018429A1/fr

Links

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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/065—Guide needles
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3286—Needle tip design, e.g. for improved penetration

Definitions

  • the invention relates to a cannula for vascular puncture according to the preambles of claims 1, 8, 12 and 16.
  • Cannulas are hollow needles that are used in particular for injection, infusion and puncture on the living organism. Puncture is the puncture of a cannula into blood vessels, organs, tissues or cavities for the purpose of diagnosis and therapy.
  • the puncture of arteries requires a particularly sensitive approach, since due to the relatively high blood pressure in arteries, long-lasting consequential damage can occur if the cannula is not optimally placed.
  • the known cannulas for vascular puncture consist of a hollow needle and a cannula holder.
  • the end of the needle opposite the needle holder is a flat beveled ground point.
  • An entry opening is provided in the area of the tip, the shape and size of which directly depends on the angle of the bevel with respect to the cannula axis and on the inside diameter of the cannula.
  • the bevel is oriented at an acute angle to the cannula axis.
  • this puncture is usually carried out in the groin area, since it is possible from there to insert a cardiac catheter into the heart area, for example.
  • the bevels of the previously known cannulas for vascular puncture have an oval shape, with one end of the oval basic shape being designed as a ground tip, which enables particularly easy penetration into the skin tissue and passage through the vessel wall.
  • the oval shape results from the oblique cut of the cylindrical body of the cannula.
  • the bevel surface formed at an acute angle to the cannula axis is essentially flat. This creates a maximum entry opening for the blood.
  • the angle that the beveled surface forms with the cannula axis is often not more than 30 °.
  • a non-optimal puncture can lead to the blood vessel being pierced by means of these known cannulas or the cannula only partially penetrating the vessel wall.
  • incomplete penetration or partial puncturing of the vessel with the cannula also leads to blood flow. Due to the relatively large inlet opening, this blood flow cannot always be distinguished from the blood flow of an optimally oriented inlet opening, that is to say that the inlet opening is completely placed in the vessel lumen, so that the puncturing doctor cannot correctly assess the optimal position of the cannula opening based on the blood flow can.
  • the puncture is undetected, part of the inlet opening of the cannula is outside the Blood vessel, blood can leak into the surrounding tissue. This situation can arise if the inlet opening is only partially inserted into the vessel or if the vessel wall on the opposite side has been pierced and part of the inlet opening is outside the vessel.
  • the invention is based on the object of offering a cannula for vascular punctures, with the aid of which it is possible to easily bring the puncture cannula into an optimal position with its inlet opening and to enable a reliable indication of the optimal position based on the blood flow. Furthermore, injury to surrounding tissues, vessels and nerves should be avoided as far as possible. When a guidewire is advanced through the cannula, the risk of injury to the vessel walls and surrounding tissue should be minimized.
  • a cannula the inlet opening of which is greatly reduced compared to the inlet openings of the conventional cannulas, and with a cannula, the tip of which is conical. Furthermore, according to the invention, a cannula is provided which has a deflection surface in the region of the entry opening for a guide wire to be inserted.
  • the reduction in the size of the inlet opening essentially means that after the puncture of the vessel wall, blood flow does not occur until the entire inlet opening is in the lumen of the vessel. A partial penetration of the inlet opening would significantly hamper blood flow.
  • a deflection surface provided in the area of the inlet opening enables a change in direction of the tip of the guide wire even in the case of an unfavorable insertion angle, so that more of the guide wire can now be advanced safely, the dilator and sluice inserted one after the other and further diagnosis and / or treatment can be carried out.
  • the resulting safer puncturing with a reduced risk of vascular injuries and bleeding is a great advantage of the invention.
  • the further conical design of the cannula tip provided according to the invention largely prevents injuries to the vessel wall, veins and nerves and the surrounding tissue due to its predominantly dilating, less cutting effect.
  • the bevel consists of several partial bevels arranged at an angle to each other, makes it possible to choose another technological variant of the manufacture of cannulas that have a small inlet opening.
  • the manufacturing method according to the invention of a cannula tip according to claims 16 and 17 makes it possible to produce a cannula with a reduced inlet opening and a deflection surface for the guide wire in a particularly effective manner.
  • FIG. 10 is a sectional view of the tip of FIG. 9,
  • Fig. 11 puncture cannula with a conical tip
  • Fig. 12 puncture cannula with a conical tip and bevel
  • Fig. 13 deflection of a guide wire.
  • Figures 1 to 4 show in different representations a puncture cannula 1 with a wall reinforcement 9. Die
  • Cannula 1 essentially consists of a needle 2 and a cannula holder 4.
  • the needle 2 has a tip 3 which has a bevel 7.
  • An inlet opening 5 is formed by a wall 8 of the needle 2 and by the wall reinforcement 9.
  • the angle of the bevel 7 with a cannula axis 6 is an acute angle that in the
  • the wall reinforcement 9 is in
  • Puncture area of the tip 3 arranged.
  • Bevel 7 in the area of wall reinforcement 9 has a bevel.
  • FIGS. 5 and 6 show another embodiment of the bevel 7.
  • the bevel 7 consists of an upper partial bevel 11 and a lower partial bevel 12. Both partial bevels are arranged at an angle to one another. This increases the angle between the lower partial bevel 12 and the cannula axis 6. As a result, the inlet opening 5 is reduced.
  • FIG. 7 shows a cannula 1 with a curved tip 3.
  • a curvature 10 of the tip 3 actually leads to an increase in the angle between the bevel 7 and the cannula axis 6.
  • the puncture characteristics of this cannula are determined by the curvature of the tip 3.
  • FIGS. 11 and 12 show an embodiment of the invention with a conical tip 3, in FIG. 12 the puncture area having a bevel 17.
  • the inlet opening 5 is only partially arranged in the cone jacket 13.
  • FIGS 8, 9 and 10 show a further embodiment of the invention.
  • the tip 3 of the cannula 1 is conical.
  • a conical jacket 13 has a radial constriction 14 in the puncture area of the tip 3 and in the area of the inlet opening.
  • FIG. 13 shows the mode of operation of a deflection surface 15.
  • the cannula 1 which penetrates the skin 18 and a vessel wall 19 at an obtuse angle, is placed with its inlet opening 5 in the vessel lumen 20. Due to the presence of a deflection surface 15, a guide wire can be optimally inserted into the vessel lumen 20.

Landscapes

  • 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)
  • Vascular Medicine (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Surgical Instruments (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

La présente invention concerne une canule destinée aux ponctions dans les vaisseaux. Elle est constituée par une aiguille à pointe oblique, présentant une ouverture d'entrée, et un porte-canule placé dessus. Du fait que la position des vaisseaux sanguins ne se distingue pas toujours de l'extérieur, l'angle et la profondeur d'enfoncement de l'aiguille, lorsqu'on procède à une ponction, sont difficiles à déterminer avant d'enfoncer l'aiguille, et cela exige beaucoup de sensibilité et d'expérience. C'est ainsi qu'une ponction exécutée d'une façon non optimale peut avoir pour effet que, avec les canules connues, le vaisseau soit percé de part en part ou que la canule ne traverse que partiellement la paroi du vaisseau, ou qu'un fil de guidage, introduit ensuite, provoque des lésions. Le but de l'invention est de réaliser une canule pour ponctions dans les vaisseaux, dont l'ouverture d'entrée puisse être mise sans difficulté dans une position optimale, et avec laquelle le sang qui s'écoule donne une indication sûre de la position optimale. En outre, il s'agit d'éviter, dans toute la mesure du possible, de léser des tissus, des vaisseaux et des nerfs situés à proximité. Ce but est atteint avec une canule dont l'ouverture d'entrée est beaucoup plus petite que celles des canules classiques, dont la pointe est conique et qui est pourvue, près de l'ouverture d'entrée, d'une surface de déflexion pour le fil de guidage.
PCT/EP1995/004940 1994-12-14 1995-12-14 Canule pour ponctions dans les vaisseaux WO1996018429A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU43449/96A AU4344996A (en) 1994-12-14 1995-12-14 Vessel-puncturing cannula

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4446677.3 1994-12-14
DE19944446677 DE4446677C2 (de) 1994-12-14 1994-12-14 Kanüle für die Gefäßpunktion

Publications (1)

Publication Number Publication Date
WO1996018429A1 true WO1996018429A1 (fr) 1996-06-20

Family

ID=6537183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/004940 WO1996018429A1 (fr) 1994-12-14 1995-12-14 Canule pour ponctions dans les vaisseaux

Country Status (3)

Country Link
AU (1) AU4344996A (fr)
DE (1) DE4446677C2 (fr)
WO (1) WO1996018429A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012000239A (ja) * 2010-06-16 2012-01-05 Terumo Corp 医療用穿刺針
JP2014097102A (ja) * 2012-11-13 2014-05-29 Jms Co Ltd 高流量型瓶針
US20190030290A1 (en) * 2017-07-28 2019-01-31 Aaron Ginster Vascular Access Needle for Guidewire Insertion
CN112971936A (zh) * 2021-02-23 2021-06-18 祝恒 一种适用于经皮介入后的穿刺器具

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2762517B1 (fr) * 1997-04-25 1999-07-16 Ordicam Rech Et Dev Aiguille et seringue d'injection sous-cutanee de puce transpondeur
DE10247022B4 (de) * 2002-10-09 2016-09-08 Disetronic Licensing Ag Nadelspitze
DE10307829A1 (de) * 2003-02-24 2004-09-09 Cell Center Cologne Gmbh Medizinische Drahtpistole
US7651482B2 (en) * 2005-02-04 2010-01-26 Boston Scientific Scimed, Inc. Non-coring needles and methods of manufacturing same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788119A (en) * 1972-08-17 1974-01-29 Baxter Laboratories Inc Method of forming spinal needle
US4411657A (en) * 1980-05-19 1983-10-25 Anibal Galindo Hypodermic needle
US4721506A (en) * 1986-11-07 1988-01-26 Teves Leonides Y Flat-inclined tip needle
US4767407A (en) * 1986-07-14 1988-08-30 Foran Scot J Hypodermic needle, catheter and method
DE3922406C1 (fr) * 1989-07-07 1990-10-11 B. Braun Melsungen Ag, 3508 Melsungen, De
WO1992005816A1 (fr) * 1990-09-28 1992-04-16 Gebrüder Sulzer Aktiengesellschaft Canule pour utilisation medicale et procede pour la fabrication de telles canules

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE265972C (fr) *
EP0301246B1 (fr) * 1987-07-10 1992-02-05 B. Braun Melsungen AG Canule
GB9126396D0 (en) * 1991-12-12 1992-02-12 Univ Manchester A hollow needle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788119A (en) * 1972-08-17 1974-01-29 Baxter Laboratories Inc Method of forming spinal needle
US4411657A (en) * 1980-05-19 1983-10-25 Anibal Galindo Hypodermic needle
US4767407A (en) * 1986-07-14 1988-08-30 Foran Scot J Hypodermic needle, catheter and method
US4721506A (en) * 1986-11-07 1988-01-26 Teves Leonides Y Flat-inclined tip needle
DE3922406C1 (fr) * 1989-07-07 1990-10-11 B. Braun Melsungen Ag, 3508 Melsungen, De
WO1992005816A1 (fr) * 1990-09-28 1992-04-16 Gebrüder Sulzer Aktiengesellschaft Canule pour utilisation medicale et procede pour la fabrication de telles canules

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012000239A (ja) * 2010-06-16 2012-01-05 Terumo Corp 医療用穿刺針
JP2014097102A (ja) * 2012-11-13 2014-05-29 Jms Co Ltd 高流量型瓶針
US20190030290A1 (en) * 2017-07-28 2019-01-31 Aaron Ginster Vascular Access Needle for Guidewire Insertion
WO2020014295A1 (fr) * 2017-07-28 2020-01-16 Aaron Ginster Aiguille d'accès vasculaire pour insertion de fil-guide
CN112971936A (zh) * 2021-02-23 2021-06-18 祝恒 一种适用于经皮介入后的穿刺器具
CN112971936B (zh) * 2021-02-23 2022-11-08 江西侨明医疗器械有限公司 一种适用于经皮介入后的穿刺器具

Also Published As

Publication number Publication date
DE4446677C2 (de) 1997-05-07
DE4446677A1 (de) 1996-07-04
AU4344996A (en) 1996-07-03

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