WO2012014017A1 - Introducteur de cathéter - Google Patents

Introducteur de cathéter Download PDF

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Publication number
WO2012014017A1
WO2012014017A1 PCT/IB2010/053988 IB2010053988W WO2012014017A1 WO 2012014017 A1 WO2012014017 A1 WO 2012014017A1 IB 2010053988 W IB2010053988 W IB 2010053988W WO 2012014017 A1 WO2012014017 A1 WO 2012014017A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
introducer
hub
safety device
jaws
Prior art date
Application number
PCT/IB2010/053988
Other languages
English (en)
Inventor
Rishi Baid
Original Assignee
Poly Medicure Limited
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 Poly Medicure Limited filed Critical Poly Medicure Limited
Publication of WO2012014017A1 publication Critical patent/WO2012014017A1/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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • A61M25/0618—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for protecting only the distal tip of the needle, e.g. a needle guard
    • 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
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • A61M2005/325—Means obstructing the needle passage at distal end of a needle protection sleeve
    • 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
    • A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
    • 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
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3273—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel freely sliding on needle shaft without connection to syringe or needle

Definitions

  • the present invention relates to a catheter introducer, in particular an over- the-needle-peel-away catheter introducer.
  • the present invention relates to a catheter introducer, in particular an over- the-needle-peel-away catheter introducer, comprising a tube-like introducer sheath; an introducer hub having a distal section and a proximal section, wherein the distal section is joined to a proximal end of the introducer sheath and the proximal section defines a chamber; a needle extending through the introducer hub and the introducer sheath and having opposite proximal and distal ends, wherein the distal end forms a needle tip; and a needle hub attached to the proximal end of the needle.
  • proximal refers to a location on the device closest to, for example, a clinician using the device.
  • distal refers to a location on the device farthest from the clinician, such as the distal needle tip to be inserted into a patient's vein.
  • a catheter introducer is generally known and typically used to facilitate insertion and placement of a catheter or another medical device into a patient's vasculature.
  • a conventional peel-away catheter introducer which is also referred to as a peelable or splittable or a tear-away catheter introducer comprises a pair of wings extending transversely from the introducer hub.
  • a clinician grabs the needle hub along with the introducer hub and inserts the distal portions of the needle and of the introducer sheath at a selected site into a patient's skin.
  • the clinician advances the device until venipuncture has been confirmed, for example, when blood enters a flashback chamber formed in the needle hub.
  • the clinician advances the distal end portion of the introducer sheath into the patient's vein and withdraws the needle.
  • the clinician can then insert a medical device, such as a catheter, into the proximal opening of the introducer sheath and advance the medical device through the introducer sheath until it is properly placed in the patient's vasculature.
  • a medical device such as a catheter
  • the clinician withdraws the introducer sheath out of the venipuncture site.
  • the clinician then splits the introducer hub and introducer sheath into two respective separate halves by a combination of twisting and/or pulling apart of the wings along tear lines provided in the introducer hub and introducer sheath until the two halves of the introducer hub and introducer sheath split apart.
  • the clinician can thus remove the introducer hub and introducer sheath while the catheter inserted into the patient's vein remains in place.
  • HIV human immunodeficiency virus
  • HBV hepatitis B virus
  • HCV hepatitis C virus
  • the catheter introducer of the invention comprises a tube-like introducer sheath; an introducer hub having a distal section and a proximal section, wherein the distal section is joined to a proximal end of the introducer sheath and the proximal section defines a chamber; a needle extending through the introducer hub and the introducer sheath and having opposite proximal and distal ends, wherein the distal end forms a needle tip; a needle hub attached to the proximal end of the needle; and a needle safety device slidably arranged on the needle, wherein the needle safety device is retained in the chamber of the introducer hub when the needle extends through the introducer hub and the introducer sheath and removable from the introducer hub once the needle tip is received in the needle safety device upon withdrawal of the needle from the introducer sheath.
  • the needle safety device is operative as a guard for the needle tip by automatically covering the needle tip during withdrawal of the needle from a patient and subsequently from the introducer sheath.
  • the needle safety device thereby serves to prevent accidental pricking of, for example, a clinician by the needle tip after removal of the needle from the introducer sheath. Hence, the needle can be safely disposed of after use.
  • a part of the needle safety device is, seen in a radial direction, arranged between the introducer hub and the needle hub.
  • a not only a safe seat of the needle safety device in the chamber of the introducer hub but also a secure connection between the introduce hub and the needle hub are achieved prior to withdrawal of the needle from the introducer sheath.
  • the arrangement of a part of the needle safety device between the introducer hub and the needle hub facilitates a correct positioning of the needle safety device in the introducer hub and thus makes the assembly and ultimately the manufacture of the catheter in- troducer easier and less expansive.
  • the needle safety device comprises two generally L-shaped extensions formed on opposite sides of the needle safety device, preferably in the region of a proximal end thereof.
  • Each L-shaped extension may have an axial section extending generally in an axial direction at a distance from a base portion or a reinforced jaw portion of the needle safety device.
  • the axial direction is defined by the longitudinal axis of the introducer sheath and of the needle extending therethrough.
  • the proximal section of the introducer hub is configured to be received between the axial sections and the base portion or the reinforced jaw portions of the needle safety device.
  • the proximal section of the introducer hub is formed from two opposite proximal tube sections extending in the axial direction.
  • the needle hub may comprise a main body and two opposite tube sections extending in the axial direction from a distal end of the main body.
  • the tube sections of the needle hub are configured to engage between the proximal tube sections of the introducer hub such that the tube sections of the needle hub and the proximal tube sections of the introducer hub together form a substantially closed tube. Because of this substantially closed tube the chamber defined by the proximal section of the introducer hub is also substantially closed, such that the needle safety device received in the chamber is protected from outside influences. This helps to permanently maintain a reliable functioning of the needle safety device.
  • the main body of the needle hub comprises a tube-like portion configured to receive both a base portion of the needle safety device and a portion of the proximal section of the introducer hub.
  • the tube-like portion of the main body of the needle hub hence surrounds a part of the needle safety device as well as a part of the proximal section of the introducer hub, thereby not only protecting the needle safety device but also preventing the introducer hub and consequently the introducer sheath from accidentally splitting in halves.
  • locking means are provided to hold the portion of the proximal section of the introducer hub in place between the axial sections and the base portion or the reinforced jaw portions of the needle safety device.
  • the locking means help to secure the needle safety device at the introducer hub as long as the needle has not been fully withdrawn from the introducer sheath and the needle tip has not been received in the needle safety device.
  • the needle can move relative to the needle safety device until the needle tip is safely received in the needle safety device.
  • the locking means thus ensure a correct functioning of the needle safety device.
  • locking means are provided to hold the proximal section of the introducer hub in place in the tube-like portion of the needle hub.
  • the locking means ensure a safe connection between the introducer hub and needle hub and thereby prevent the needle from being accidentally withdrawn from the introducer sheath.
  • both the locking means operating between the introducer hub and the needle safety device and the locking means operating between the introducer hub and the needle hub comprise a locking protrusion on the respective one part and a corresponding locking depression in the respective other part.
  • respective locking protrusions may be provided in the region of the proximal ends of the proximal tube sections of the introducer hub, whereas corresponding grooves may be provided at the inner side of the tube-like portion of the needle hub and of the generally L-shaped extensions of the needle safety device.
  • the needle safety device may comprise first and second jaws extending from the base portion in a generally axial direction.
  • the first jaw is integrally formed with the base portion and, preferably, substantially rigid. Due to the first jaw being formed integrally with the base portion, the number of parts in the needle safety device is reduced and the simplicity thereof increased. Forming the base portion, and thus preferably also the first jaw, from a plastic material helps to reduce the costs of manufacturing the needle safety device. The first jaw being substantially rigid increases the integrity of the needle safety device. At the same time, a reliable functioning of the needle safety device can be ensured by a suitable deflectability of the second jaw.
  • the second jaw may include a strip of material having spring-like properties, for example a strip of sheet metal or a strip of a suitable plastic material. Because of the first and second jaws being made from two separate parts, the needle safety device can easily be adapted to needles of different thicknesses. Furthermore, due to its simple design the needle safety device and, thus, the entire catheter introducer can be manufactured at low cost. Due to its spring-like properties the second jaw may be deflected against a restoring force by the needle extending all the way through the needle safety device, such that the second jaw snaps in front of the needle tip as soon as the needle tip is moved inbetween the two jaws, thereby safely guarding the needle tip.
  • the first and second jaws may be formed integrally with the base portion, wherein preferably both jaws have spring-like properties.
  • the second jaw may have a distal end section which extends towards the first jaw such that it sits on the needle when the needle extends through the needle safety device, thereby deflecting the second jaw outwardly against a restoring force, and blocks the needle tip from protruding from the needle safety device when the needle tip is received between the jaws, thereby safely guarding the needle tip in the needle safety device.
  • an elastic element in particular a tension ring, surrounds the first and second jaws in order to positively collapse the jaws when the needle tip is received between the jaws.
  • the elastic element and the jaws are configured such that the second jaw can be spread away from the first jaw against a restoring force of the elastic element in order to allow the needle to extend all the way through the needle safety device.
  • the elastic element ensures that the spread apart jaws will snap together and guard the needle tip upon withdrawal of the needle from the introducer sheath even after a longer shelf time, thereby continuously ensuring a correct functioning of the needle safety device.
  • the elastic element prevents the jaws from becoming loose when the needle safety device slides along the needle, thereby further adding to a correct functioning of the needle safety device.
  • the elastic element helps prevent the needle tip from protruding sideways out of the needle safety device, thereby further increasing the protective function of the needle safety device.
  • the needle extends through an axial bore in the base portion of the needle safety device, wherein the cross section of the bore is adapted to the main profile of the needle, and the needle has an enlargement near the needle tip rendering the outer diameter of the needle, seen in at least one direction, greater than the diameter of the bore.
  • the enlargement prevents the needle safety device from sliding off the needle when the needle tip is received between the jaws, thereby even further improving the protective function of the needle safety device.
  • a needle safety device for guarding the tip of a needle of a medical apparatus, for example, a catheter introducer of the above described type or an intravenous catheter apparatus, which comprises a base portion and two jaws extending therefrom and defining an axial direction and two generally reshaped extensions formed on opposite sides of the needle safety device, wherein each L- shaped extension has an axial section extending generally in the axial direction at a distance from the base portion or from reinforced portions of the jaws.
  • the needle safety device may be configured similar to the needle safety device of the above described catheter introducer.
  • Fig. la to lc show (a) a first longitudinal sectional view of a catheter introducer according to the invention, (b) a second longitudinal sectional view of the catheter introducer, and (c) an enlargement of a portion of Fig. la;
  • FIG. 2a and 2b show a perspective views of an introducer hub of the catheter introducer of Fig. 1 and of the introducer hub attached to an introducer sheath;
  • FIG. 3a and 3b show (a) perspective view of a needle hub of the catheter introducer of Fig. 1 and (b) a side view of the needle hub attached to a needle;
  • Fig. 4a to 4f show (a) a perspective view of a needle safety device of the catheter introducer of Fig. 1, (b) a longitudinal sectional view of the needle safety device, (c) a side view of the needle safety device, (d) a plan view of the needle safety device, (e) a side view of the needle safety device guarding the tip of a needle, and (f) a longitudinal sectional view of the needle safety device guarding the needle tip; and
  • Fig 5a to 5f show (a) a perspective view, (b) a side view, (c) a longitudinal sectional view, and (d) a plan view of an alternative needle safety device for the catheter introducer of Fig. 1, and (e) a side view and (f) a longitudinal sectional view of the needle safety device guarding the tip of a needle.
  • Figs, la and lb show longitudinal sectional views of an over-the-needle-peel-away catheter introducer of the invention.
  • the catheter introducer comprises a tube-like introducer sheath 10 having a proximal end region 12 that is joined to an introducer hub 14.
  • the catheter introducer comprises a needle 16 having a distal end that forms a needle tip 18 and a proximal end that is attached to a needle hub 20.
  • the needle hub 20 Prior to use of the catheter introducer, the needle hub 20 is connected to the introducer hub 14 such that the needle 16 extends all the way through the introducer hub 14 and the introducer sheath 10 and the needle tip 18 protrudes beyond a distal end of the introducer sheath 10.
  • an elongate cap 22 or protective tube is mounted to the introducer hub 14, which covers the length of the introducer sheath 10 and also the needle tip 18 protruding therefrom.
  • the introducer hub 14 includes a distal section 24 and a proximal section 26.
  • the distal section 24 has smaller inner and outer diameters than the proximal section 26 and is joined to the proximal end region 12 of the introducer sheath 10.
  • a funnel-like structure 28 is formed in the introducer hub 14, which helps to facilitate the introducing of a medical device, for example a catheter, into the introducer sheath 10 after the introducer sheath 10 has been inserted into the vein of a patient.
  • two wings 30 extend transversely from the introducer hub 14 in the transition region between the distal section 24 and the proximal section 26.
  • Both the distal section 24 and the proximal section 26 of the introducer hub 14 are formed from pairs of opposite axially extending tube sections 32, 34 which define first and second halves of the introducer hub 14. Prior to use, the first and second halves of the introducer hub 14 are connected to each other by the funnel-like structure 28.
  • a medical device such as a catheter
  • the person handling the catheter introducer withdraws the introducer sheath 10 from the venipuncture site.
  • the clinician withdraws the introducer sheath 10 from the venipuncture site.
  • tear lines 36 may by provided in the funnel-like structure 28 and also in the introducer sheath 10.
  • the needle hub 16 comprises a main body 38 and two
  • the tube sections 40 of the needle hub 20 are configured to engage between the proximal tube sections 34 of the introducer hub 14 such that the proximal tube sections 34 of the introducer hub 14 and the tube sections 40 of the needle hub 20 form a substantially closed tube.
  • the tube sections 40 of the needle hub 20 and the proximal tube sections 34 of the introducer hub 14 have substantially the same length and curvature, and the tube sections 40 of the needle hub 20 have a width corresponding to the gap between the proximal tube sections 34 of the introducer hub 14.
  • the proximal tube sections 34 of the introducer hub 14 and the tube sections 40 of the needle hub 20 together form a chamber 42, for a needle safety device 44 which is slidably arranged on the needle 16.
  • the needle safety device 44 comprises a main part 46, a clip 48 and a tension ring 50.
  • the main part 46 is made from a plastic material and comprises a base portion 52 and an elongate portion 54 forming a first jaw 55.
  • the base portion 52 is of substantially cylindrical shape and has a bore 56 extending therethrough in the axial direction for receiving the needle 16.
  • the elongate portion 54 is of semi-cylindrical shape and extends from the base portion 52 in the axial direction.
  • the elongate portion 52 has a groove 58 formed in its flat side 60, which extends in the axial direction along the entire length of the elongate portion 54 and forms an extension of the bore 56 in the base portion 52. While the bore 56 has a generally circular cross section that is adapted to the main outer profile of the needle 16, the groove 58 has a generally semi-circular cross section.
  • the clip 48 is formed from a strip of sheet metal having spring-like properties, such as steel or the like.
  • the clip 48 could be formed from a plastic material which has suitable spring-like properties.
  • the clip 48 forms a second jaw 62 and comprises a base section 64 and a deflectable section 66.
  • the base section 64 includes an axial section part 68 and a radial section part 70. It is adapted to engage with the base portion 52 of the main part 46 such that the axial section part 68 lies against the outer surface of the base portion 52 while the radial section part 70 lies against a rear or proximal end face of the base portion 52, when the clip 48 is attached to the main part 46.
  • the base portion 52 is provided with a guide 74 for the clip 48.
  • the clip 48 is secured to the main part 46 by means of a heat sealing connection.
  • the main part 46 initially has a pillar or pin 76 formed at its proximal end face and extending generally in the axial direction.
  • the clip 48 has a corresponding opening 78 formed in its radial section part 70 for receiving the pillar or pin 76 when the clip 48 is mounted on the main part 46.
  • the clip 48 is safely fixed at the main part 46.
  • the clip 48 could be secured to the main part 46 by means of gluing or welding or any other suitable type of connection.
  • the base section 64 of the clip 48 passes into the deflectable section 66 via a steplike bending of the sheet metal strip.
  • the deflectable section 66 includes a straight section part 80 which is reinforced by two elongate wings 82 that extend on either side of the straight section part 80 and are bent inwards, i.e. towards the elongate portion 54, by an angle of substantially 90°.
  • the straight section part 80 does not exactly extend in the axial direction, but is bent slightly towards the elongate portion 54 of the main part 46.
  • the straight section part 80 passes into a head section part 84 which extends beyond the free end of the elongate portion 54 of the main part 46.
  • the head section part 84 has a generally V-like shape with the peak of the V pointing in the axial direction and the free leg 86 of the V extending towards the elongate portion 54.
  • the tension ring 50 surrounds the elongate portion 54 of the main part 46 and the straight section part 80 of the clip 48 in the region of the elongate wings 82.
  • the tension ring 50 is made from a material having elastic properties, for example rubber.
  • the tension ring 50 is configured so that the deflectable section 66 of the clip 48 is deflected against a restoring force of the tension ring 50, when the needle 16 extends all the way through the needle safety device 44. This situation is called the deflected state of the needle safety device 44 and is shown in Fig. lb.
  • the deflectable section 66 of the clip 48 is drawn towards the elongate portion 54 of the main part 46 by the tension ring 50.
  • the head section part 84 of the clip 48 overlaps with or extends over at least a portion of the distal end face 90 of the elongate portion 54, thereby preventing the needle tip 18 from protruding out of the needle safety device 44 at the distal end thereof.
  • the bore 56 provided in the base portion 52 of the main part 46 of the needle safety device 44 is adapted to the main outer profile of the needle 16.
  • the needle 16 is provided with an enlargement 92 near the needle tip 18, which renders the outer diameter of the needle 16, seen in at least one direction, greater than the diameter of the bore 56.
  • the enlargement 92 prevents the needle safety device 44 from sliding off the needle 16 when the needle tip 18 is received between the first and second jaws 55, 62 as is shown in Figs. 4e and 4f.
  • each L-shaped extension 94 has an axial section 96 which extends in the axial direction at a distance from the base portion 52 of the needle safety device 44.
  • the L-shaped extensions 94 are dimensioned such that proximal end portions 98 of the proximal tube sections 34 of the introducer hub 14 are tightly received between the axial section 96 of the L-shaped extensions and the base portion 52 of the needle safety device 44 when the needle safety device 44 is received in the chamber 42 defined by the tube sections 34, 44 of the introducer hub 14 and the needle hub 20, as shown in Fig. la and lc.
  • locking grooves 100 are provided in the inner surfaces of the axial sections 96 of the L-shaped extensions 94 and corresponding locking protrusions 102 are provided at the outer surfaces of the proximal tube sections 34 of the introducer hub 14 (Figs, lc and 2).
  • the tube sections 40 of the needle hub 20 pass into a tubelike portion 104 of the main body 38 of the needle hub 20.
  • the tube-like portion 104 is configured to receive not only the base portion 52 of the needle safety device 44 but also a part of the proximal tube sections 34 of the introducer hub 14 (Figs, la and lc).
  • the locking engagement of the locking protrusions 102 with the locking grooves 100 secure the needle safety device 44 at the introducer hub 14, thereby preventing the needle safety device 44 from being accidentally withdrawn from the introducer hub 14 before the needle tip 18 has been received between the first and second jaws 55, 62 of the needle safety device 44.
  • FIG. 5 shows an alternative embodiment of a needle safety device 44.
  • the needle safety device 44 shown in Fig. 5 comprises a main part 46 and a tension ring 50.
  • the needle safety device 44 shown in Fig. 5 does not have any separate clip 48.
  • the main part 46 comprises a base portion 52 and two elongate portions 110, 112 that extend from the base portion 52 generally in the axial direction to form the first and second jaws 55, 62.
  • the base portion 52 and the two elongate portions 110, 112 are integrally formed and made, for example, from a plastic material.
  • the base portion 52 is of substantially cylindrical shape and has a bore 56 extending therethrough in the axial direction for receiving the needle 16.
  • the bore 56 has a generally circular cross section that is adapted to the main outer profile of the needle 16.
  • the elongate portions 110, 112 each have a proximal section 114 and a distal section 116. While the proximal sections 114 extend generally parallel to each other, the distal sections 116 are inclined towards each other in the collapsed state of the needle safety device 44 (Figs. 5e and 5f) or when no needle 16 extends through the needle safety device 44 (Figs. 5a to 5d).
  • the distal section 116 of the second jaw 62 passes into a head section part 84 which extends beyond the free end of the first jaw 55.
  • the head section part 84 includes an end section 118 which extends in a radial direction towards the first jaw 55.
  • the length of the end section 118 is such that it covers at least a portion of the free end of the first jaw 55 when the needle safety device 44 is in its collapsed state in order to prevent the needle tip 18 from protruding out of the needle safety device 44 (Figs. 5e and 5f).
  • the tension ring 50 surrounds the first and second jaws 55, 62 in the region of their distal sections 116.
  • the tension ring 50 is made from a material having elastic properties, for example rubber.
  • the tension ring 50 is configured so that the first and second jaws 55, 62 are deflected against a restoring force of the tension ring 50, when the needle 16 extends all the way through the needle safety device 44.
  • Two generally L-shaped extensions 94 are formed on opposite sides of the needle safety device 44.
  • the L-shaped extensions 94 emerge from reinforced portions 120 of the first and second jaws 55, 62 in the proximal end region of the first and second jaws 55, 62.
  • Each L-shaped extension 94 has an axial section 96 which extends in the axial direction at a distance from the respective reinforced portion 120.
  • the L-shaped extensions 94 are dimensioned such that proximal end portions 98 of the proximal tube sections 34 of the introducer hub 14 are tightly received between the axial sections 96 of the L-shaped extensions and the reinforced portions 120 of the needle safety device 44 when the needle safety device 44 is received in the chamber 42 defined by the tube sections 34, 44 of the introducer hub 14 and the needle hub 20, as shown in Figs, la and lc.
  • the L-shaped extensions 94 of the needle safety device 44 shown in Fig. 5 do not have any locking grooves 100 in the inner surfaces of the axial sections 96 of the L-shaped extensions 94. Instead, the reinforced portions 120 are provided with locking shoulders 122 for retaining the proximal tube sections 34 of the introducer hub 14 between the axial sections 96 of the L-shaped extensions and the reinforced portions 120 of the needle safety device 44. Accordingly, the proximal tube sections 34 of the introducer hub 14 should be provided with corresponding locking means at their inner surfaces, for example, suitable depressions.

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

Abstract

L'invention porte sur un introducteur de cathéter comprenant une gaine d'introducteur (10) de type tube ; une embase d'introducteur (14) ayant une section distale (24) et une section proximale (26), la section distale (24) étant assemblée à la gaine d'introducteur (10) et la section proximale (26) définissant une chambre (42) ; une aiguille (16) s'étendant à travers l'embase d'introducteur (14) et la gaine d'introducteur (10) et ayant des extrémités proximale et distale opposées, l'extrémité distale formant une pointe d'aiguille (18) ; un raccord d'aiguille (20) fixé à l'extrémité proximale de l'aiguille (16) ; et un dispositif de sécurité d'aiguille (44) disposé de manière coulissante sur l'aiguille (16), le dispositif de sécurité d'aiguille (44) étant retenu dans la chambre (42) de l'embase d'introducteur (14) lorsque l'aiguille (16) s'étend à travers l'embase d'introducteur (14) et la gaine d'introducteur (10), et pouvant être enlevé de l'embase d'introducteur (14) une fois que la pointe d'aiguille (18) est reçue dans le dispositif de sécurité d'aiguille (44) lors du retrait de l'aiguille (16) de la gaine d'introducteur (10), le dispositif de sécurité d'aiguille (44) comprenant une partie de base (52) et des première et seconde mâchoires (55, 62) s'étendant à partir de la partie de base (52) dans une direction généralement axiale ; et un élément élastique entourant les première et seconde mâchoires (55, 62) de façon à affaisser les mâchoires (55, 62) de manière positive lorsque la pointe d'aiguille (18) est reçue entre les mâchoires (55, 62).
PCT/IB2010/053988 2010-07-30 2010-09-04 Introducteur de cathéter WO2012014017A1 (fr)

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WO2014104757A1 (fr) 2012-12-28 2014-07-03 크리스탈지노믹스(주) Dérivé 2,3-dihydro-isoindole-1-one utilisé comme suppresseur de kinase btk, et composition pharmaceutique associée
USD844774S1 (en) 2015-01-30 2019-04-02 Smiths Medical Asd, Inc. Catheter assembly design
US10548522B2 (en) 2015-01-30 2020-02-04 Smiths Medical Asd, Inc. Releaseable catheter hub retainer
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WO2009116080A2 (fr) * 2008-03-17 2009-09-24 Poly Medicure Limited Dispositif de sécurité d'aiguille
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EP2016963A1 (fr) * 2007-07-17 2009-01-21 Poly Medicure Ltd. Dispositif de sécurité d'aiguille
WO2009116080A2 (fr) * 2008-03-17 2009-09-24 Poly Medicure Limited Dispositif de sécurité d'aiguille
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014104757A1 (fr) 2012-12-28 2014-07-03 크리스탈지노믹스(주) Dérivé 2,3-dihydro-isoindole-1-one utilisé comme suppresseur de kinase btk, et composition pharmaceutique associée
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EP3428161A1 (fr) 2012-12-28 2019-01-16 Crystalgenomics, Inc. Dérivé 2,3-dihydro-isoindole-1-one utilisé comme suppresseur de kinase btk, et composition pharmaceutique associée
US10604508B2 (en) 2012-12-28 2020-03-31 Crystalgenomics, Inc. 2,3-dihydro-isoindole-1-one derivative as BTK kinase suppressant, and pharmaceutical composition including same
US11230539B2 (en) 2012-12-28 2022-01-25 Crystalgenomics, Inc. 2,3-dihydro-isoindole-1-one derivative as BTK kinase suppressant, and pharmaceutical composition including same
USD844774S1 (en) 2015-01-30 2019-04-02 Smiths Medical Asd, Inc. Catheter assembly design
US10548522B2 (en) 2015-01-30 2020-02-04 Smiths Medical Asd, Inc. Releaseable catheter hub retainer
US12048541B2 (en) 2018-06-08 2024-07-30 Smiths Medical Asd, Inc. Blood sequestration device and method

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