WO1988003816A1 - Improved catheter assembly - Google Patents

Improved catheter assembly Download PDF

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Publication number
WO1988003816A1
WO1988003816A1 PCT/GB1987/000836 GB8700836W WO8803816A1 WO 1988003816 A1 WO1988003816 A1 WO 1988003816A1 GB 8700836 W GB8700836 W GB 8700836W WO 8803816 A1 WO8803816 A1 WO 8803816A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
membrane
cannula tube
passageway
catheter assembly
Prior art date
Application number
PCT/GB1987/000836
Other languages
French (fr)
Inventor
Ulf Harry Wahlberg
Lars Åke LINDGREN
Ragnar HANÅS
Original Assignee
The Boc Group Plc
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 The Boc Group Plc filed Critical The Boc Group Plc
Publication of WO1988003816A1 publication Critical patent/WO1988003816A1/en

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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M39/0606—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof without means for adjusting the seal opening or pressure
    • 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
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M2039/062—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof used with a catheter
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M2039/0633—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof the seal being a passive seal made of a resilient material with or without an opening

Definitions

  • the present invention relates to catheter assemblies and in particular to catheter assemblies for use by patients for the self administration of drugs such as insulin in the case of diabetics or other suitable me icaments.
  • Catheter assemblies are know which incorporate a sealing member to prevent or inhibit the ingress of foreign bodies or bacteria into the catheter assembly.
  • United States Patent No. 4496348 discloses a catheter assembly comprising an elongate housing with a passageway extending longitudinally therethrough.
  • a cannula tube is connected to the housing and extends outwardly from the distal end of the passageway.
  • the passageway has mounted therein an elastic sealing member to prevent or inhibit the ingress of foreign bodies and bacteria into the interior of the catheter assembly.
  • a puncture unit includes a needle having attached thereto a gripping head, the needle extends through the membrane, passageway and the cannula tube such that its spiculated end extends from the distal end of the cannula tube.
  • the puncture unit is adapted for insertion and removal from the housing and the cannula tube.
  • Means are provided for compressing the elastic sealing member to reseal the opening through said sealing member created by the withdrawal of the needle when the puncture unit is removed from the housing and the cannula tube.
  • This known catheter assembly suffers from the disadvantage that the needle puncturing surface of the membrane is relatively inaccessible and therefore cannot easily be cleaned. Furthermore, the compressing means necessary for resealing the sealing member is complicated which renders the catheter assembly relatively expensive to manufacture. It is an aim of the present invention to provide a catheter assembly which is suitable for the self-administration of drugs or other medicaments by a patient in which the sealing member is self-sealing and is relatively easy to keep clean.
  • a catheter assembly comprises an elongate housing with a passageway extending longitudinally therethrough, a cannula tube connected to the housing and extending outwardly from the distal end of the passageway, the passageway at its proximal end having mounted therein a sealing member, .and a puncture unit including a needle having attached thereto a gripping head, the needle extending through the membrane, passageway and the ⁇ annula tube with its spiculated end extending from the distal end of the cannula tube, the puncture unit being adapted for insertion and removal from the housing and the cannula tube, characterised in that the sealing member is a self sealing membrane which is mounted in the passageway and maintained therein at the proximal end of the housing by forming the proximal end of the housing on to the peripheral area of the membrane such that a surface of the membrane is made flush with the proximal end of the housing.
  • Figure 1 is a cross section through a catheter assembly
  • Figures 2A and 2B are cross sections illustrating schematically a method whereby a housing forming part of the cannula assembly of Figure 1 is formed over a membrane also forming part of the catheter assembly of Figure 1;
  • Figure 2C is a cross section of a hot forming tool for performing the operation illustrating in Figures 2A and 2B;
  • Figure 3 is a schematic cross section on an enlarged scale showing openings in a cannula tube forming part of the catheter assembly of Figure 1;
  • Figure 4 is a cross section illustrating a cannula tube forming part of the catheter assembly of Figure 1 assembled to a bushing;
  • Figure 5A is a cross section of a gripping head forming part of a puncture unit, said puncture unit forming part of the catheter assembly of Figure 1;
  • Figure 5B is an end view of the gripping member of Figure 5A;
  • Figures 6 to 8 are schematic views illustrating how the catheter assembly is handled prior to its use'by a patient.
  • a catheter assembly includes an elongate housing (2) having an internal passageway extending from one end of the housing to the opposite end in the longitudinal sense.
  • a cannula tube (1) made, for example of TEFLON, is connected to the housing (2) and extends from the distal end of the passageway.
  • the cannula tube (1) is connected to the housing (2) by means of a bushing (2a) best illustrated in Figure 4, which bushing is located in an enlarged portion of the passageway.
  • a self-seal.ing silicon membrane (5) is also located in the enlarged portion of the passageway immediately adjacent to the proximal (right) end as shown in Figure 1 .
  • the membrane (5) when inserted in the passageway is in the form of plug which engages the rear (right hand end as shown in Figure 2a) of the bushing (2a) .
  • the membrane (5) is fixed in the passageway by the thermo-forming or ultrasonic-forming of the rear end or the housing (2) .
  • the Figures 2a, 2b and 2c illustrate the case of thermo-forming.
  • the rear end of the housing (2) is formed over the rear end of the membrane (5) by means of a forming tool and engages the peripheral area of the membrane with such a force that the membrane (5) is caused to bulge at its centre such that a needle-puncturing surface (5a) is made flush with the proximal end of the housing (2) which surface (5a) is readily accessible for cleaning.
  • the rear portion of the bushing (2a) has a conical bore.
  • the largest cross section of the conical bore at its rear end being larger than the coaxial needle puncturing surface (5a) of the membrane (5) and serves as a guide means for a hypodermic needle passing through the membrane (5) .
  • a portion of the tube (1) adjacent its distal end is coated with silicone (6) .
  • the catheter assembly also includes a puncture unit which comprises a puncture member in the form of a hollow needle (3) and a gripping head (4) secured thereto.
  • the needle extends through the membrane (5) passageway and cannula tube (1) such that its spiculated end extends from the distal end of the cannula tube (1) .
  • the gripping head (4) is formed at one end (right hand as shown) with a tapered bore and at its opposite end with an arcuate shaped flange (4a).
  • the proximal or right hand end of the housing (2) in the assembled condition of the catheter assembly is located within the flange (4a) as shown in Figure 1.
  • the flange (4a) in effect, encloses to a large extent the rear end of the housing (2) and thus protects the membrane (5) against contamination.
  • a protective tubular member (7) is a press fit over a portion of the housing (2) and thereby covers and protects the cannula tube (1) and needle (3) .
  • the tubular member (7) has a tapered outer surface which is reduced at its distal end as shown in Figure 1. The reduced portion of the tubular member (7) is so dimensioned that it can fit within the tapered bore of gripping head (4) as will be explained.
  • the cannula tube (1) is provided in its wall with through openings or slots (8) which when the cannula tube (1) is placed in the body of a patient and medicament injected therethrough allows the spreading of the medicament.
  • the openings or slots (8) can also be used for sterilising the interior of the cannula tube. Such sterilisation is otherwise difficult to carry out since the membrane (5) effectively seals the cannula tube at its rear end and the engagement between cannula tube (1) and the needle (3) effectively seals the catheter tube (1) at its front or distal end.
  • the catheter assembly is packed in a sterile manner with the protective tubular member (7) mounted on the housing (2) thereby protecting the cannula tube (1) and the needle (3) as shown in Figure 1.
  • the protective tubular member (7) is removed and inserted in the rear end of the gripping head (4) as shown in Figure 6 without any fingers touching the cannula tube (1) .
  • pinching the gripping head (4) with the thumb and index finger the user then inserts the needle (3) and the cannula tube (1) into the skin.
  • the puncture unit together with the protective tube member (7) is then separated from the housing (2) by the user holding the housing (2) with one hand and withdrawing the needle (3) by means of the gripping head (4) and the tubular member (7) with the other hand.
  • the housing (2) together with the cannula tube (1) inserted under the skin is thereafter fixed to the skin by an adhesive PUR-foam disc 9 having a recess (10) for the hous.ing (2) .
  • the medicament for example insulin
  • the medicament spreads throughout a large area due to the openings (8) in the cannula tube (1) .
  • the membrane (5) is self-sealing and the needle puncturing surface (5a) is relatively easy to keep clean since it is flush with the proximal end of the housing (2).
  • the protective tubular member (7) provides the double function of protecting the cannula tube (1) and needle (3) as well as the users fingers before use and during use of effectively increasing the length of the gripping head (4) . This second function is particularly important if the user is self-administering a drug and is in a weakened condition or unaccustomed to injecting himself.
  • the openings (8) in the cannula tube (1) also have a double function namely:-

Abstract

A catheter assembly includes a self-sealing membrane (5) mounted within a passageway of a housing (2). The membrane (5) is maintained within the passageway by forming the proximal end of the housing (2) on to the peripheral area of the membrane (5) thereby causing the centre of the membrane (5) to bulge such that a surface (5a) is made flush with said proximal end of the housing (2).

Description

IMPROVED CATHETER ASSEMBLY
The present invention relates to catheter assemblies and in particular to catheter assemblies for use by patients for the self administration of drugs such as insulin in the case of diabetics or other suitable me icaments.
Catheter assemblies are know which incorporate a sealing member to prevent or inhibit the ingress of foreign bodies or bacteria into the catheter assembly. United States Patent No. 4496348 discloses a catheter assembly comprising an elongate housing with a passageway extending longitudinally therethrough. A cannula tube is connected to the housing and extends outwardly from the distal end of the passageway. At its proximal end the passageway has mounted therein an elastic sealing member to prevent or inhibit the ingress of foreign bodies and bacteria into the interior of the catheter assembly. A puncture unit includes a needle having attached thereto a gripping head, the needle extends through the membrane, passageway and the cannula tube such that its spiculated end extends from the distal end of the cannula tube. The puncture unit is adapted for insertion and removal from the housing and the cannula tube. Means are provided for compressing the elastic sealing member to reseal the opening through said sealing member created by the withdrawal of the needle when the puncture unit is removed from the housing and the cannula tube.
This known catheter assembly suffers from the disadvantage that the needle puncturing surface of the membrane is relatively inaccessible and therefore cannot easily be cleaned. Furthermore, the compressing means necessary for resealing the sealing member is complicated which renders the catheter assembly relatively expensive to manufacture. It is an aim of the present invention to provide a catheter assembly which is suitable for the self-administration of drugs or other medicaments by a patient in which the sealing member is self-sealing and is relatively easy to keep clean.
According to the present invention a catheter assembly comprises an elongate housing with a passageway extending longitudinally therethrough, a cannula tube connected to the housing and extending outwardly from the distal end of the passageway, the passageway at its proximal end having mounted therein a sealing member, .and a puncture unit including a needle having attached thereto a gripping head, the needle extending through the membrane, passageway and the αannula tube with its spiculated end extending from the distal end of the cannula tube, the puncture unit being adapted for insertion and removal from the housing and the cannula tube, characterised in that the sealing member is a self sealing membrane which is mounted in the passageway and maintained therein at the proximal end of the housing by forming the proximal end of the housing on to the peripheral area of the membrane such that a surface of the membrane is made flush with the proximal end of the housing.
An embodiment of the invention will now be described, by way of example, with reference to the Figures of the accompanying diagrammatic drawings in which:-
Figure 1 is a cross section through a catheter assembly;
Figures 2A and 2B are cross sections illustrating schematically a method whereby a housing forming part of the cannula assembly of Figure 1 is formed over a membrane also forming part of the catheter assembly of Figure 1;
Figure 2C is a cross section of a hot forming tool for performing the operation illustrating in Figures 2A and 2B; Figure 3 is a schematic cross section on an enlarged scale showing openings in a cannula tube forming part of the catheter assembly of Figure 1;
Figure 4 is a cross section illustrating a cannula tube forming part of the catheter assembly of Figure 1 assembled to a bushing;
Figure 5A is a cross section of a gripping head forming part of a puncture unit, said puncture unit forming part of the catheter assembly of Figure 1;
Figure 5B is an end view of the gripping member of Figure 5A;
Figures 6 to 8 are schematic views illustrating how the catheter assembly is handled prior to its use'by a patient.
As shown, a catheter assembly includes an elongate housing (2) having an internal passageway extending from one end of the housing to the opposite end in the longitudinal sense. A cannula tube (1) made, for example of TEFLON, is connected to the housing (2) and extends from the distal end of the passageway. The cannula tube (1) is connected to the housing (2) by means of a bushing (2a) best illustrated in Figure 4, which bushing is located in an enlarged portion of the passageway. Also located in the enlarged portion of the passageway immediately adjacent to the proximal (right) end as shown in Figure 1 is a self-seal.ing silicon membrane (5) .
Referring in particular to Figure 2a, 2b and 2c, the membrane (5) when inserted in the passageway is in the form of plug which engages the rear (right hand end as shown in Figure 2a) of the bushing (2a) . In this way, there is only a minimum of dead space, that is, internal volume in the passageway of the housing (2) . The membrane (5) is fixed in the passageway by the thermo-forming or ultrasonic-forming of the rear end or the housing (2) . The Figures 2a, 2b and 2c illustrate the case of thermo-forming. The rear end of the housing (2) is formed over the rear end of the membrane (5) by means of a forming tool and engages the peripheral area of the membrane with such a force that the membrane (5) is caused to bulge at its centre such that a needle-puncturing surface (5a) is made flush with the proximal end of the housing (2) which surface (5a) is readily accessible for cleaning.
The rear portion of the bushing (2a) has a conical bore. The largest cross section of the conical bore at its rear end being larger than the coaxial needle puncturing surface (5a) of the membrane (5) and serves as a guide means for a hypodermic needle passing through the membrane (5) .
A portion of the tube (1) adjacent its distal end is coated with silicone (6) .
Extending from each side of the housing (2) in a manner known per se are wings best illustrated in Figure 6.
The catheter assembly also includes a puncture unit which comprises a puncture member in the form of a hollow needle (3) and a gripping head (4) secured thereto. The needle extends through the membrane (5) passageway and cannula tube (1) such that its spiculated end extends from the distal end of the cannula tube (1) .
As shown in Figure (5a) , the gripping head (4) is formed at one end (right hand as shown) with a tapered bore and at its opposite end with an arcuate shaped flange (4a). The proximal or right hand end of the housing (2) in the assembled condition of the catheter assembly is located within the flange (4a) as shown in Figure 1. The flange (4a) , in effect, encloses to a large extent the rear end of the housing (2) and thus protects the membrane (5) against contamination. A protective tubular member (7) is a press fit over a portion of the housing (2) and thereby covers and protects the cannula tube (1) and needle (3) . The tubular member (7) has a tapered outer surface which is reduced at its distal end as shown in Figure 1. The reduced portion of the tubular member (7) is so dimensioned that it can fit within the tapered bore of gripping head (4) as will be explained.
Referring in particular to Figure (3) the cannula tube (1) is provided in its wall with through openings or slots (8) which when the cannula tube (1) is placed in the body of a patient and medicament injected therethrough allows the spreading of the medicament.
The openings or slots (8) can also be used for sterilising the interior of the cannula tube. Such sterilisation is otherwise difficult to carry out since the membrane (5) effectively seals the cannula tube at its rear end and the engagement between cannula tube (1) and the needle (3) effectively seals the catheter tube (1) at its front or distal end.
In use, the catheter assembly is packed in a sterile manner with the protective tubular member (7) mounted on the housing (2) thereby protecting the cannula tube (1) and the needle (3) as shown in Figure 1. After the package has been opened .and just before the assembly is used, the protective tubular member (7) is removed and inserted in the rear end of the gripping head (4) as shown in Figure 6 without any fingers touching the cannula tube (1) . By pinching the gripping head (4) with the thumb and index finger the user then inserts the needle (3) and the cannula tube (1) into the skin. The puncture unit together with the protective tube member (7) is then separated from the housing (2) by the user holding the housing (2) with one hand and withdrawing the needle (3) by means of the gripping head (4) and the tubular member (7) with the other hand. The housing (2) together with the cannula tube (1) inserted under the skin is thereafter fixed to the skin by an adhesive PUR-foam disc 9 having a recess (10) for the hous.ing (2) .
The medicament, for example insulin, can thereafter be injected into the body by means of a hypodermic needle run through the needle puncturing surface (5a) of the membrane (5) and guided by the bushing (2a) . The medicament spreads throughout a large area due to the openings (8) in the cannula tube (1) .
The embodiment of the invention described above has a number of advantageous features. For example, the membrane (5) is self-sealing and the needle puncturing surface (5a) is relatively easy to keep clean since it is flush with the proximal end of the housing (2). Further, the protective tubular member (7) provides the double function of protecting the cannula tube (1) and needle (3) as well as the users fingers before use and during use of effectively increasing the length of the gripping head (4) . This second function is particularly important if the user is self-administering a drug and is in a weakened condition or unaccustomed to injecting himself.
The openings (8) in the cannula tube (1) also have a double function namely:-
a) Spreading the medicament within the body; and b) permitting sterilization of the interior of the cannula tube (1)
Finally, the passageway in the housing (2) has very little dead space due to the location of the membrane (5) immediately adjacent the bushing 2a.

Claims

1. A catheter assembly comprising an elongate housing (2) with a passageway extending longitudinally therethrough, a cannula tube (1) connected to the housing (2) and extending outwardly from the distal end of the passageway, the passageway at its proximal end having mounted therein a sealing member (5) , and a puncture unit including a needle (3) having attached thereto a gripping head (4) , the needle (3) extending through the membrane (5) , passageway and the cannula tube J(l) with its spiculated end extending from the distal end of the cannula tube (1) , the puncture unit being adapted for insertion and removal from the housing (2) and the cannula tube (1) , characterised in that the sealing member is a self-sealing membrane (5) which is mounted in the passageway and maintained therein at the proximal end of the housing (2) by forming the proximal end of the housing (2) on to the peripheral area of the membrane (5) such that a surface (5a) of the membrane is made flush with the proximal end of the housing (2) .
2. A catheter assembly as claimed in claim 1, characterised in that the gripping head (4) has an arcuate flange (4a) which, when the puncture unit is inserted in the housing (2) , substantially encloses the proximal end of the housing (2) thereby protecting the membrane (5) from contamination.
3. A catheter assembly as claimed in claim 1 or claim 2, characterised in that a tubular member (7) is provided which is a press fit over a portion of the housing (2) and thereby covers and protects the cannula tube (1) and the needle (3) , a portion of the outer surface of the tubular member (7) being tapered and so dimensioned that it can fit within a tapered bore at the proximal end of the gripping head (4) to effectively increase the length of the gripping head (4) .
4. A catheter assembly as claimed in claim 1, 2 or 3 characterised in that the cannula tube (1) has through open.ings (8) for spreading medicament within the body into which the cannula tube (1) is inserted.
PCT/GB1987/000836 1986-11-24 1987-11-23 Improved catheter assembly WO1988003816A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8605026-7 1986-11-24
SE8605026A SE8605026L (en) 1986-11-24 1986-11-24 Needle catheter

Publications (1)

Publication Number Publication Date
WO1988003816A1 true WO1988003816A1 (en) 1988-06-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1987/000836 WO1988003816A1 (en) 1986-11-24 1987-11-23 Improved catheter assembly

Country Status (3)

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FR (1) FR2607012B3 (en)
SE (1) SE8605026L (en)
WO (1) WO1988003816A1 (en)

Cited By (8)

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US6673440B2 (en) 2000-11-06 2004-01-06 Sterling Medivations, Inc. Subcutaneous injection set tubing with solvent bonding
US6685674B2 (en) 2001-03-04 2004-02-03 Sterling Medivations, Inc. Infusion hub assembly and fluid line disconnect system
US6749589B1 (en) 2000-01-18 2004-06-15 Sterling Medications, Inc. Subcutaneous injection set for use with a reservoir that has a septum
US7338465B2 (en) 2002-07-02 2008-03-04 Patton Medical Devices, Lp Infusion device and method thereof
WO2014131987A1 (en) 2013-03-01 2014-09-04 Aptar Stelmi Sas Needle protection device
US8956330B2 (en) 2006-02-07 2015-02-17 Techpharma Licensing Ag Infusion set
US9039660B2 (en) 2005-11-03 2015-05-26 Medtronic Minimed, Inc. Fluid delivery devices, systems and methods
US11654221B2 (en) 2003-11-05 2023-05-23 Baxter International Inc. Dialysis system having inductive heating

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RU2440831C2 (en) 2005-08-22 2012-01-27 Паттон Медикал Дивайсиз, Лп Devices, systems and methods of liquid introduction

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EP0139091A1 (en) * 1983-07-18 1985-05-02 Abbott Laboratories Catheter flashback indicator
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Publication number Priority date Publication date Assignee Title
FR1048549A (en) * 1951-07-09 1953-12-22 Plastic syringe usable in particular for injecting a drug
US4294249A (en) * 1979-10-18 1981-10-13 Cutter Laboratories, Inc. Swage-molded injection site
GB2063679A (en) * 1979-11-29 1981-06-10 Abbott Lab Venipuncture device
EP0137061A1 (en) * 1981-05-07 1985-04-17 John M. Clarke Thoracentesis device
US4511356A (en) * 1983-02-22 1985-04-16 Edward C. Froning Cannula, obturator, stylet and needle hub connectors for lumbar disc puncture
EP0139091A1 (en) * 1983-07-18 1985-05-02 Abbott Laboratories Catheter flashback indicator
US4601703A (en) * 1984-01-27 1986-07-22 Intermedicat Gmbh Injector for an infusion or transfusion system
US4601701A (en) * 1985-02-25 1986-07-22 Argon Medical Corp. Multi-purpose multi-lumen catheter

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6749589B1 (en) 2000-01-18 2004-06-15 Sterling Medications, Inc. Subcutaneous injection set for use with a reservoir that has a septum
US6673440B2 (en) 2000-11-06 2004-01-06 Sterling Medivations, Inc. Subcutaneous injection set tubing with solvent bonding
US6685674B2 (en) 2001-03-04 2004-02-03 Sterling Medivations, Inc. Infusion hub assembly and fluid line disconnect system
US9486575B2 (en) 2002-07-02 2016-11-08 Medtronic Minimed, Inc. Infusion device
US7338465B2 (en) 2002-07-02 2008-03-04 Patton Medical Devices, Lp Infusion device and method thereof
US11654221B2 (en) 2003-11-05 2023-05-23 Baxter International Inc. Dialysis system having inductive heating
US11771823B2 (en) 2005-11-03 2023-10-03 Medtronic Minimed, Inc. Fluid delivery devices, systems and methods
US9039660B2 (en) 2005-11-03 2015-05-26 Medtronic Minimed, Inc. Fluid delivery devices, systems and methods
US10342919B2 (en) 2005-11-03 2019-07-09 Medtronic Minimed, Inc. Fluid delivery devices, systems and methods
US8956330B2 (en) 2006-02-07 2015-02-17 Techpharma Licensing Ag Infusion set
CN105025966A (en) * 2013-03-01 2015-11-04 阿普塔斯黛美简易股份公司 Needle protection device
CN105025966B (en) * 2013-03-01 2018-03-30 阿普塔斯黛美简易股份公司 Needle guard mechanisms
US10183122B2 (en) 2013-03-01 2019-01-22 Aptar Stelmi Sas Needle protection device
JP2016512049A (en) * 2013-03-01 2016-04-25 アプター ステルミ エスアーエスＡｐｔａｒ Ｓｔｅｌｍｉ Ｓａｓ Needle protector
FR3002740A1 (en) * 2013-03-01 2014-09-05 Transformation Des Elastomeres A Usages Medicaux Et Ind Soc D NEEDLE PROTECTION DEVICE.
WO2014131987A1 (en) 2013-03-01 2014-09-04 Aptar Stelmi Sas Needle protection device

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FR2607012B3 (en) 1989-02-03
SE8605026D0 (en) 1986-11-24
FR2607012A1 (en) 1988-05-27
SE8605026L (en) 1988-05-25

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