FR2528315A1 - Medical needle point with stepped chamfers in series - to facilitate entry and withdrawal for analytical samples for haematology etc. - Google Patents
Medical needle point with stepped chamfers in series - to facilitate entry and withdrawal for analytical samples for haematology etc. Download PDFInfo
- Publication number
- FR2528315A1 FR2528315A1 FR8210000A FR8210000A FR2528315A1 FR 2528315 A1 FR2528315 A1 FR 2528315A1 FR 8210000 A FR8210000 A FR 8210000A FR 8210000 A FR8210000 A FR 8210000A FR 2528315 A1 FR2528315 A1 FR 2528315A1
- Authority
- FR
- France
- Prior art keywords
- needle
- probe according
- probe
- electrodes
- conductive elements
- 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.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14542—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring blood gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1468—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using chemical or electrochemical methods, e.g. by polarographic means
- A61B5/1473—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using chemical or electrochemical methods, e.g. by polarographic means invasive, e.g. introduced into the body by a catheter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
- A61B5/150396—Specific tip design, e.g. for improved penetration characteristics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
- A61B5/150511—Details of construction of shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
- A61B5/283—Invasive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6848—Needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/157—Devices characterised by integrated means for measuring characteristics of blood
Abstract
Description
SONDE DE PRELEVEDENT ET D'INJECTION
La présente invention est du domaine des sondes ou aiguilles d'injection, notamment utilisées dans les systèmes de transfert de préparations d'échantillons pour le dosage de particules ou de constituants dans l'analyse hématologique, sérologique, biochimique, microbiologique, bactériochimique, écologique ou industrielle.Elle vise plus précisément une sonde de ce type plus spécialement conformée pour être utilisée dans des systèmes automatisés et/ou programmes
La présente invention vise donc le produit industriel nouveau que constitue une sonde ou aiguille médicale, notamment utilisable pour l'injection ou le prélèvement de liquides homogènes ou hétérogènes, de façon aseptique ou également septique, caractérisée par le fait que l'extrémité biseautée de l'aiguille présente un double épaulement effacé destiné à faciliter sa pénétration et son extraction en cas d'injec tion à travers un bouchon d'étanchéité, par exemple un bouchon en élastomère, cette forme permettant également d'améliorer les conditions de prélèvement et/ou d'injection aseptique, et élimine les phénomènes a) d' "emporte-pièce" observé avec les aiguilles et sondes de l'art antérieur; b) de goutte due à des différences de tension superficielle.SAMPLING AND INJECTION PROBE
The present invention is in the field of injection probes or needles, in particular used in transfer systems for sample preparations for the determination of particles or constituents in hematological, serological, biochemical, microbiological, bacteriochemical, ecological or It is more specifically aimed at a probe of this type more specially shaped for use in automated systems and / or programs.
The present invention therefore relates to the new industrial product that constitutes a medical probe or needle, in particular usable for the injection or the sampling of homogeneous or heterogeneous liquids, in an aseptic or also septic manner, characterized in that the bevelled end of the the needle has a double erased shoulder intended to facilitate its penetration and extraction in the event of injection through a sealing plug, for example an elastomer plug, this shape also making it possible to improve the conditions of sampling and / or aseptic injection, and eliminates the phenomena a) of "cookie cutter" observed with the needles and probes of the prior art; b) drop due to differences in surface tension.
Selon une forme de réalisation préférée de l'invention, l'aiguille est constituée d'un substrat métallique recouvert extérieurement et/ ou intérieurement, d'une couche ou d'une pellicule de matière plastique électriquement isolante biologiquement compatible, la matière plastique est du polytétrafluoroéthylène. According to a preferred embodiment of the invention, the needle consists of a metal substrate covered externally and / or internally with a layer or a film of biologically compatible electrically insulating plastic material, the plastic material is polytetrafluoroethylene.
Dans une variante de réalisation de la sonde ou aiguille de pré-lèvement et/ou injection selon l'invention, au moins une paire d'électro des superficielles sont disposées extérieurement ou intérieurement sur la sonde, des éléments conducteurs étant prévus à l'intérieur de la couche superficielle correspondante en plastique isolant et agencés de façon à relier les électrodes superficielles à des appareils de mesure et/ou de controle. In an alternative embodiment of the probe or needle for sampling and / or injection according to the invention, at least one pair of electro surface are disposed externally or internally on the probe, conductive elements being provided inside of the corresponding surface layer of insulating plastic and arranged so as to connect the surface electrodes to measuring and / or monitoring devices.
Dans la variante de réalisation précitée, l'extrémité non biseautée de l'aiguille comporte une structure périphérique d'enfichage à laquelle aboutissent les éléments conducteurs noyés à l'intérieur des couches isolantes périphériques de l'aiguille. On peut également utiliser le substrat métallique de l'aiguille comme électrode
Ces éléments conducteurs sont avantageusement constitués par des feuilles ou filaments en or, en platine, en acier inoxydable et alliages analogues. In the aforementioned variant embodiment, the non-bevelled end of the needle comprises a peripheral insertion structure to which the conductive elements embedded inside the peripheral insulating layers of the needle end. You can also use the metal substrate of the needle as an electrode
These conductive elements are advantageously constituted by sheets or filaments made of gold, platinum, stainless steel and similar alloys.
D'autres avantages et caractéristiques de l'invention apparaî- tront à la lecture de la description non limitative suivante de formes de réalisation d'aiguilles ou sondes d'injection et/ou de prélèvement selon l'invention, en référence au dessin annexé dans lequel
- la figure 1 représente à grande échelles en élévation latérale, une sonde selon l'invention;
- la figure 2 est une vue en coupe selon la ligne II-II de la figure 1;
- la figure 3 est une vue de dessus d'une variante de réalisation de l'aiguille de la figure 1; et
- la figure 4 est une vue en coupe transversale selon la ligne
IV-IV de la figure 3.Other advantages and characteristics of the invention will appear on reading the following nonlimiting description of embodiments of injection or sampling needles or probes according to the invention, with reference to the accompanying drawing in which
- Figure 1 shows at large scales in side elevation, a probe according to the invention;
- Figure 2 is a sectional view along the line II-II of Figure 1;
- Figure 3 is a top view of an alternative embodiment of the needle of Figure 1; and
- Figure 4 is a cross-sectional view along the line
IV-IV of figure 3.
L'aiguille des figures 1 à 4 est réalisée à partir d'un profilé tubulaire creux en métal inoxydable, par exemple en acier, dont les faces interne et-externe ont été recouvertes d'une couche ou pellicule en matériau plastique isolant. Comme matériau de ce type, on utilise avantageusement du polytétrafluoroéthylène tel celui commercialisé sous la dénomination Teflon par la firme Du Pont de Nemours. The needle of FIGS. 1 to 4 is produced from a hollow tubular profile made of stainless metal, for example steel, the internal and external faces of which have been covered with a layer or film of insulating plastic material. As material of this type, polytetrafluoroethylene such as that sold under the name Teflon by the company Du Pont de Nemours is advantageously used.
Cette aiguille, référencée dans sa totalité par 1, présente une extrémité biseautée conformée de façon à définir deux épaulements successifs 2a, 2b; 3a, 3b. Les couches, externe et interne en plastique isolant sont respectivement référencées 4 et 5 L'extrémité non biseautée de l'aiguille 1 est pourvue d'un manchon périphérique 6 qui y est fixé et constitue par exemple un moyen de préhension et/ou de limitation d'enfoncement. This needle, referenced in its entirety by 1, has a beveled end shaped so as to define two successive shoulders 2a, 2b; 3a, 3b. The layers, external and internal, of insulating plastic are respectively referenced 4 and 5. The non-bevelled end of the needle 1 is provided with a peripheral sleeve 6 which is fixed to it and constitutes, for example, a gripping and / or limiting means. of depression.
Dans la variante de réalisation de la figure 3, l'aiguille 7 est de forme sensiblement identique à celle des figures 1 et 2, sauf que dans les couches de plastique isolant externe 8 et interne 9 sont respectivement incrustées des électrodes iota, 10b; 11a, 11b. Ces électrodes ont la formule de petites plaquettes et sont reliées par des éléments conducteurs respectifs 12a, tob, ssaS 13b, qui sont noyés respectivement dans les couches externe 8 et interne 9 prévues sur toute la périphérie de l'aiguille 7.Ces éléments conducteurs sont raccordés à une structure d'enfichage 14 prévue avantageusement à i'in- teneur d'un moyen de préhension ou de limitation de course de la sondes qui est fixé à l'extrémité de l'aiguille 7, non biseautée. In the alternative embodiment of FIG. 3, the needle 7 is of substantially identical shape to that of FIGS. 1 and 2, except that in the layers of external insulating plastic 8 and internal 9 are respectively encrusted iota, 10b electrodes; 11a, 11b. These electrodes have the formula of small plates and are connected by respective conductive elements 12a, tob, ssaS 13b, which are embedded respectively in the external layers 8 and internal 9 provided on the entire periphery of the needle 7. These conductive elements are connected to a plug-in structure 14 advantageously provided at the content of a means for gripping or limiting the travel of the probes which is fixed to the end of the needle 7, not bevelled.
Les sondes ou aiguilles de ce type sont caractérisées par leur rigidité et leur résistarWe Xlecanique amliorés qui leur permettent de pénétrer à travers des opercules élasto-plastiques de l'épaisseur requise. Elles peuvent être fabriquées facilement par un procédé de fabrication approprié, quel que soit leur diamètre. Leur extrémité en biseau de pénétration présente, comme spécifié ci-dessus, un double épaulement effacé qui leur permet de ne faire en aucun cas emportepièce et de pénétrer à travers des opercules élasto-plastiques de toutes tailles et de toutes natures.Les électrodes et leurs éléments conducteurs sont avantageusement constitués en un matériau noble inoxydable suffisamment ductile pour être étiré en fil très fin ou en lame très mince, facilement noyé dans les couches externe et interne en plastique isolant, par exemple en Teflon, ce métal étant avantageusement de l'or, qui possède en outre une très bonne conductivité. La présence de ces électrodes permet de suivre les sondes dans leur progression à travers un milieu fractionné et de les arrêter au niveau de la stase à prélever. Probes or needles of this type are characterized by their improved rigidity and resistance, which allow them to penetrate through elastoplastic lids of the required thickness. They can be easily manufactured by an appropriate manufacturing process, whatever their diameter. Their penetration bevel end has, as specified above, a double erased shoulder which allows them in no case to take away a part and to penetrate through elastoplastic lids of all sizes and of all kinds. conductive elements are advantageously made of a noble stainless material sufficiently ductile to be drawn into very fine wire or very thin blade, easily embedded in the outer and inner layers of insulating plastic, for example Teflon, this metal being advantageously gold , which also has very good conductivity. The presence of these electrodes makes it possible to follow the probes in their progression through a fractionated medium and to stop them at the level of the stasis to be sampled.
Ces sondes peuvent également être traitées superficiellement par un produit non mouillable et nettoyable par simple rinçage. Dans une forme plus particulièrement avantageuse de sondes, leur pointe est constituée par un cône d'angle au sommet à 170 plus ou moins 100 et elles sont pourvues d'un échappement latéral.These probes can also be treated superficially with a non-wettable product that can be cleaned by simple rinsing. In a more particularly advantageous form of probes, their point is constituted by a cone of angle at the top at 170 plus or minus 100 and they are provided with a lateral exhaust.
Par son bloc d'enfichage d'extrémité, l'aiguille ou sonde selon la présente invention peut être connectée à n'importe quel appareil de mesure ou de contrôle mettant en oeuvre des moyens électriques, électroniques ou informatiques et destinés à des analyses ou traitements. By its end plug block, the needle or probe according to the present invention can be connected to any measurement or control device using electrical, electronic or computer means and intended for analyzes or treatments. .
Il est clair que 1 invention n'est nullement limitée aux formes de réalisation décrites ci-dessus en référence au dessin annexé, mais qu'elle englobe toutes les modifications ou variantes, à la portée de l'homme de l'art, issues du même principe de base. C'est ainsi que la sonde peut être fermée à son extrémité biseautée et comporter au moins un échappement latéral de prélèvement et d'injection, conformé pour y fixer des capteurs en pointe. It is clear that the invention is in no way limited to the embodiments described above with reference to the appended drawing, but that it encompasses all modifications or variants, within the reach of the skilled person, from the same basic principle. Thus the probe can be closed at its beveled end and include at least one lateral exhaust for sampling and injection, shaped to attach point sensors to it.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8210000A FR2528315A1 (en) | 1982-06-09 | 1982-06-09 | Medical needle point with stepped chamfers in series - to facilitate entry and withdrawal for analytical samples for haematology etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8210000A FR2528315A1 (en) | 1982-06-09 | 1982-06-09 | Medical needle point with stepped chamfers in series - to facilitate entry and withdrawal for analytical samples for haematology etc. |
Publications (1)
Publication Number | Publication Date |
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FR2528315A1 true FR2528315A1 (en) | 1983-12-16 |
Family
ID=9274785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8210000A Pending FR2528315A1 (en) | 1982-06-09 | 1982-06-09 | Medical needle point with stepped chamfers in series - to facilitate entry and withdrawal for analytical samples for haematology etc. |
Country Status (1)
Country | Link |
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FR (1) | FR2528315A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0206531A2 (en) * | 1985-06-13 | 1986-12-30 | The Regents Of The University Of California | Electrochemical cell sensor for continuous, short-term use in tissues and blood |
EP0275390A1 (en) * | 1987-01-03 | 1988-07-27 | Institut für Diabetestechnologie Gemeinnützige Forschungs - und Entwicklungsgesellschaft mbH | Implantable electrochemical sensor |
WO2001079422A2 (en) * | 2000-04-18 | 2001-10-25 | Amersham Biosciences Ab | Improved spot picker head |
-
1982
- 1982-06-09 FR FR8210000A patent/FR2528315A1/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0206531A2 (en) * | 1985-06-13 | 1986-12-30 | The Regents Of The University Of California | Electrochemical cell sensor for continuous, short-term use in tissues and blood |
EP0206531A3 (en) * | 1985-06-13 | 1988-07-13 | The Regents Of The University Of California | Electrochemical cell sensor for continuous, short-term use in tissues and blood |
AU591677B2 (en) * | 1985-06-13 | 1989-12-14 | Regents Of The University Of California, The | Electrochemical cell sensor for continuous, short-term use in tissues and blood |
EP0275390A1 (en) * | 1987-01-03 | 1988-07-27 | Institut für Diabetestechnologie Gemeinnützige Forschungs - und Entwicklungsgesellschaft mbH | Implantable electrochemical sensor |
US4919141A (en) * | 1987-01-03 | 1990-04-24 | Institute fur Diabetestechnologie Gemeinnutzige Forschungs- und Entwicklungsgesellschaft mbH | Implantable electrochemical sensor |
WO2001079422A2 (en) * | 2000-04-18 | 2001-10-25 | Amersham Biosciences Ab | Improved spot picker head |
WO2001079422A3 (en) * | 2000-04-18 | 2002-05-16 | Amersham Biosciences Ab | Improved spot picker head |
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