WO2001032253A1 - Over-the-needle catheter insertion device - Google Patents

Over-the-needle catheter insertion device Download PDF

Info

Publication number
WO2001032253A1
WO2001032253A1 PCT/GB2000/003967 GB0003967W WO0132253A1 WO 2001032253 A1 WO2001032253 A1 WO 2001032253A1 GB 0003967 W GB0003967 W GB 0003967W WO 0132253 A1 WO0132253 A1 WO 0132253A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
catheter
pushing
hub
catheter device
Prior art date
Application number
PCT/GB2000/003967
Other languages
French (fr)
Inventor
Christopher John Clarke
Original Assignee
Nmt 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 Nmt Group Plc filed Critical Nmt Group Plc
Priority to JP2001534456A priority Critical patent/JP2003512903A/en
Priority to EP00968115A priority patent/EP1225947A1/en
Priority to MXPA02004396A priority patent/MXPA02004396A/en
Priority to CA002388672A priority patent/CA2388672A1/en
Priority to KR1020027005687A priority patent/KR20020071857A/en
Priority to AU78070/00A priority patent/AU7807000A/en
Publication of WO2001032253A1 publication Critical patent/WO2001032253A1/en
Priority to NO20022106A priority patent/NO20022106L/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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—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
    • A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle

Definitions

  • This invention concerns a catheter device of the kind (hereinafter termed "of the kind referred to") wherein a catheter is introduced into a blood vessel by being advanced over a needle which has previously penetrated the vessel. After the catheter is in position the needle and its support means is removed and discarded.
  • a catheter device of the kind referred to comprising a needle extending from a support means, a catheter extending from a catheter hub, means for pushing the hub over the needle to advance the catheter forwardly from the needle and slidable along guide means having stop means at its forward end, the means for pushing the hub having a shield at its forward end in which the needle tip locates when the pushing means is arrested by said stop means.
  • the means for pushing the hub may engage the guide means such that reverse movement is prevented.
  • the support means may comprise a finger grip from which the guide means extends.
  • the fingers may be upwardly bowed at their forward ends to tilt the shield at the end of its forward stroke whereby the needle tip locates behind a lip in the shield.
  • Figure 1 shows a perspective view of a first form of device at an initial position
  • Figure 2 shows a perspective view of the device of Figure 1 at an intermediate position
  • Figure 3 shows a perspective view of the needle of the device of Figure 1 and its support means after removal from the catheter hub;
  • Figures 4 to 6 show perspective views similar to those of Figures 1 to 3, but of a second form of device
  • the first form of catheter device comprises a finger grip 10 which mounts a forwardly extending hollow needle 11 which passes through a catheter 12 and catheter hub 13 from which the catheter 12 extends.
  • Spaced parallel guide fingers 16 extend forwardly from the finger grip 10 and pass through apertures 17 in the pusher 14.
  • Ramped teeth 18 on the fingers 16 co-operate with the apertures 17 to prevent reverse movement of the pusher 14.
  • the finger grip 10 is manipulated to introduce the tip of the needle 11 into a blood vessel.
  • the needle 11 has an aperture in its wall behind its open forward end so that blood will be visible within the catheter 12 when the needle 11 has penetrated the vessel as an aid to correct insertion of the needle.
  • the pusher 14 is now moved forwardly to advance the catheter 12 into the blood vessel.
  • the second form of device is of generally similar construction.
  • the fingers 16 are upwardly bowed at their forward ends to cause the shield 15 to tilt at the end of its forward stroke to locate the needle tip behind a lip 20 at the forward end of the shield 15.
  • the upward bow of the forward ends of the fingers is such that when they are parallel to the skin the needle will be at the correct angle for penetration of a blood vessel.
  • the clearance between the needle 11 and the rearward end of the pusher 14 on both embodiments is no more than to provide a sliding fit whereby advancement of the pusher 14 serves to wipe blood from the needle 11 into a cavity 40 within the pusher 14.
  • Each embodiment may include means for indicating that blood has reached that end of the needle (flash back) proximate the finger grip 10.
  • This may be implemented by providing the finger grip 10 with a chamber (not shown) into which the needle opens so that blood passing along the length of the needle enters into the chamber.
  • the chamber may include an observation window, or alternatively it may be defined at least in part by a wall composed of material which is sufficiently transparent that blood entering the chamber can be observed by the person carrying out the fitting of the catheter to a patient.

Landscapes

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

Abstract

There is disclosed a catheter device of the kind referred to comprising a needle extending from a support means, a catheter extending from a catheter hub, means for pushing the hub over the needle to advance the catheter forwardly from the needle and slidable along guide means having stop means at its forward end, the means for pushing the hub having a shield at its forward end in which the needle tip locates when the pushing means is arrested by said stop means.

Description

OVER-THE-NEEDLE CATHETER INSERTION DEVICE
This invention concerns a catheter device of the kind (hereinafter termed "of the kind referred to") wherein a catheter is introduced into a blood vessel by being advanced over a needle which has previously penetrated the vessel. After the catheter is in position the needle and its support means is removed and discarded.
It is an object of the invention to provide a catheter device of the kind referred to wherein the tip of the needle is automatically shielded at the end of the catheter insertion to minimise the risk of accidental needle-stick injuries and the attendant risk of infection of health workers with such as the hepatitis and AIDS viruses.
According to the present invention there is provided a catheter device of the kind referred to comprising a needle extending from a support means, a catheter extending from a catheter hub, means for pushing the hub over the needle to advance the catheter forwardly from the needle and slidable along guide means having stop means at its forward end, the means for pushing the hub having a shield at its forward end in which the needle tip locates when the pushing means is arrested by said stop means.
The means for pushing the hub may engage the guide means such that reverse movement is prevented.
The support means may comprise a finger grip from which the guide means extends.
The guide means may comprise a pair of spaced parallel fingers which pass through apertures in the means for pushing the hub. The fingers may incorporate ramped tooth means which engage the apertures to prevent reverse movement of the means for pushing the hub.
The fingers may be upwardly bowed at their forward ends to tilt the shield at the end of its forward stroke whereby the needle tip locates behind a lip in the shield.
The invention will be further apparent from the following description with reference to the several figures of the accompanying drawings, which show, by way of example only, two forms of catheter device embodying same.
Of the drawings :-
Figure 1 shows a perspective view of a first form of device at an initial position;
Figure 2 shows a perspective view of the device of Figure 1 at an intermediate position;
Figure 3 shows a perspective view of the needle of the device of Figure 1 and its support means after removal from the catheter hub;
Figures 4 to 6 show perspective views similar to those of Figures 1 to 3, but of a second form of device;
and Figure 7 shows a cross-section through the pushing means on the line VII-VII of Figure 6. Referring now to Figures 1 to 3 of the drawings, it will be seen that the first form of catheter device comprises a finger grip 10 which mounts a forwardly extending hollow needle 11 which passes through a catheter 12 and catheter hub 13 from which the catheter 12 extends.
A hub pusher 14 having a forwardly extending cylindrical shield 15 is slidable over the needle 11 to advance the catheter 12 and hub 13 forwardly.
Spaced parallel guide fingers 16 extend forwardly from the finger grip 10 and pass through apertures 17 in the pusher 14.
Ramped teeth 18 on the fingers 16 co-operate with the apertures 17 to prevent reverse movement of the pusher 14.
Stops 19 at the forward ends of the fingers 16 arrest forward movement of the pusher 14 when the hub 13 has cleared the needle 1 1 and in this position the shield 15 encloses the needle tip.
In use the finger grip 10 is manipulated to introduce the tip of the needle 11 into a blood vessel. The needle 11 has an aperture in its wall behind its open forward end so that blood will be visible within the catheter 12 when the needle 11 has penetrated the vessel as an aid to correct insertion of the needle.
The pusher 14 is now moved forwardly to advance the catheter 12 into the blood vessel.
At the forward end of the stroke the hub 13 is released from the needle and the needle tip is enclosed by the shield 15 and remains protected since the pusher cannot be retracted. The needle and all parts shown in Figure 3 are removed and discarded leaving the catheter and hub in position.
Referring now to Figures 4 to 7 wherein like parts are indicated by like reference numerals it will be seen that the second form of device is of generally similar construction. In this embodiment the fingers 16 are upwardly bowed at their forward ends to cause the shield 15 to tilt at the end of its forward stroke to locate the needle tip behind a lip 20 at the forward end of the shield 15.
The upward bow of the forward ends of the fingers is such that when they are parallel to the skin the needle will be at the correct angle for penetration of a blood vessel.
Also, in this embodiment, there is a single tooth 18 behind the stop 19 on each finger 16.
As with the previously described embodiment there is an aperture 30 in the needle 11 behind its tip as can be seen in Figure 7.
The clearance between the needle 11 and the rearward end of the pusher 14 on both embodiments is no more than to provide a sliding fit whereby advancement of the pusher 14 serves to wipe blood from the needle 11 into a cavity 40 within the pusher 14.
It will be appreciated that it is not intended to limit the invention to the above examples only, many variations, such as might readily occur to one skilled in the art, being possible, without departing from the scope thereof as defined by the appended claims. Thus, for example, a single guide finger may be provided instead of a pair of parallel fingers.
Each embodiment may include means for indicating that blood has reached that end of the needle (flash back) proximate the finger grip 10. This may be implemented by providing the finger grip 10 with a chamber (not shown) into which the needle opens so that blood passing along the length of the needle enters into the chamber. The chamber may include an observation window, or alternatively it may be defined at least in part by a wall composed of material which is sufficiently transparent that blood entering the chamber can be observed by the person carrying out the fitting of the catheter to a patient.

Claims

1. A catheter device of the kind referred to comprising a needle extending from a support means, a catheter extending from a catheter hub, means for pushing the hub over the needle to advance the catheter forwardly from the needle and slidable along guide means having stop means at its forward end, the means for pushing the hub having a shield at its forward end in which the needle tip locates when the pushing means is arrested by said stop means.
2. A catheter device according to claim 1 wherein the support means comprises a finger grip from which the guide means extends.
3. A catheter device according to claim 1 or claim 2 wherein the guide means comprises a pair of spaced parallel fingers which pass through apertures in the means for pushing the hub.
4. A catheter device according to any one of claims 1 to 3 wherein the means for pushing the hub engages the guide means such that reverse movement is prevented.
5. A catheter according to claim 4 wherein the fingers incorporate ramped teeth which engage the apertures to prevent reverse movement of the means for pushing the hub.
6. A catheter device according to claim 3 wherein the forward ends of the fingers are upwardly bowed to tilt the shield at the end of its forward stroke whereby the needle tip locates behind a lip in the shield.
7. A catheter device according to claim 6 wherein the upward bow of the forward ends of the fingers is such that when they are parallel to the skin the needle will be at the correct angle for penetration of a blood vessel.
8. A catheter device according to claim 6 or claim 7 wherein there is a single ramped tooth behind the stop means on each finger to prevent reverse movement of the pushing means after its forward stroke has been completed.
9. A catheter device according to any preceding claim wherein there is an aperture in the wall of the needle rearwardly of its tip whereby blood will be visible within the catheter when the needle has penetrated a blood vessel.
10. A catheter device according to any preceding claim wherein there is a sliding fit between the pusher and needle whereby advancement of the pusher wipes blood from the needle into a cavity within the pusher.
11. A catheter device according to any preceding claim wherein means is provided for visualisation of blood flow to the vicinity of the supported end of the hollow needle.
PCT/GB2000/003967 1999-11-03 2000-10-16 Over-the-needle catheter insertion device WO2001032253A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2001534456A JP2003512903A (en) 1999-11-03 2000-10-16 Device for inserting a catheter along the needle
EP00968115A EP1225947A1 (en) 1999-11-03 2000-10-16 Over-the-needle catheter insertion device
MXPA02004396A MXPA02004396A (en) 1999-11-03 2000-10-16 Over the needle catheter insertion device.
CA002388672A CA2388672A1 (en) 1999-11-03 2000-10-16 Over-the-needle catheter insertion device
KR1020027005687A KR20020071857A (en) 1999-11-03 2000-10-16 Over-the-Needle Catheter Insertion Device
AU78070/00A AU7807000A (en) 1999-11-03 2000-10-16 Over-the-needle catheter insertion device
NO20022106A NO20022106L (en) 1999-11-03 2002-05-02 Kateterinnföringsinnretning

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9925890A GB2355933B (en) 1999-11-03 1999-11-03 Catheter Device
GB9925890.7 1999-11-03

Publications (1)

Publication Number Publication Date
WO2001032253A1 true WO2001032253A1 (en) 2001-05-10

Family

ID=10863785

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/003967 WO2001032253A1 (en) 1999-11-03 2000-10-16 Over-the-needle catheter insertion device

Country Status (11)

Country Link
EP (1) EP1225947A1 (en)
JP (1) JP2003512903A (en)
KR (1) KR20020071857A (en)
CN (1) CN1387448A (en)
AU (1) AU7807000A (en)
CA (1) CA2388672A1 (en)
GB (1) GB2355933B (en)
MX (1) MXPA02004396A (en)
NO (1) NO20022106L (en)
WO (1) WO2001032253A1 (en)
ZA (1) ZA200204369B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016019213A1 (en) 2014-07-31 2016-02-04 Dow Global Technologies Llc In-line dynamic mixing apparatus for flocculating and dewatering oil sands fine tailings
US9526846B2 (en) 2009-08-19 2016-12-27 Safety Syringes, Inc. Patient-contact activated needle stick safety device
WO2018022352A1 (en) 2016-07-25 2018-02-01 Dow Global Technologies Llc Acoustic mixing for flocculant addition to mineral suspensions
WO2018057325A1 (en) 2016-09-23 2018-03-29 Dow Global Technologies Llc Process for tailings remediation
WO2018063810A1 (en) 2016-09-27 2018-04-05 Dow Global Technologies Llc Process for dewatering an aqueous process stream

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10100102C2 (en) * 2001-01-03 2003-05-28 Eckert Rosemarie Catheter puncture set
WO2008092029A2 (en) 2007-01-24 2008-07-31 Access Scientific, Inc. Access device
US8105286B2 (en) 2007-04-18 2012-01-31 Access Scientific, Inc. Access device
US8357121B2 (en) * 2009-03-26 2013-01-22 Becton, Dickinson And Company Systems and methods for providing a safety integrated catheter with universal grip
US8337461B2 (en) * 2009-03-26 2012-12-25 Becton, Dickinson And Company Systems and methods for providing a conventional integrated catheter with universal grip
US8956327B2 (en) 2010-02-08 2015-02-17 Access Scientific, Llc Access device
US9566087B2 (en) 2013-03-15 2017-02-14 Access Scientific, Llc Vascular access device
US11027099B2 (en) 2015-04-30 2021-06-08 Smiths Medical Asd, Inc. Vascular access device
WO2016185950A1 (en) 2015-05-15 2016-11-24 テルモ株式会社 Catheter assembly
CN105056370B (en) * 2015-08-31 2018-11-16 青岛华仁医疗用品有限公司 A kind of peripheral venous catheter and its application method
JP6712481B2 (en) * 2016-03-30 2020-06-24 テルモ株式会社 Catheter assembly
AU2017401073B2 (en) * 2017-03-01 2022-06-02 C. R. Bard, Inc. Catheter insertion device
US11285298B2 (en) * 2017-03-17 2022-03-29 Becton, Dickinson And Company Midline catheter placement device
US10569059B2 (en) 2018-03-01 2020-02-25 Asspv, Llc Guidewire retention device
WO2021095807A1 (en) * 2019-11-14 2021-05-20 テルモ株式会社 Catheter assembly
KR102110729B1 (en) * 2020-02-05 2020-05-13 이병훈 Easy catheter assembly
KR102120615B1 (en) * 2020-05-02 2020-06-08 이병훈 Easy catheter assembly

Citations (4)

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Publication number Priority date Publication date Assignee Title
US4944728A (en) * 1988-10-17 1990-07-31 Safe Medical Devices, Inc. Intravenous catheter placement device
WO1994011050A1 (en) * 1992-11-17 1994-05-26 Moris Baroni Catheter introducer assembly including needle shield
EP0606695A1 (en) * 1991-09-18 1994-07-20 Becton, Dickinson and Company IV infusion or blood collection guard assembly
EP0749761A1 (en) * 1995-06-20 1996-12-27 The BOC Group plc Medical devices

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US5562631A (en) * 1995-06-07 1996-10-08 Johnson & Johnson Medical, Inc. Catheter arrangement with interlocking sequenced guarding members for protecting cannula
WO1998057689A1 (en) * 1997-06-16 1998-12-23 Becton Dickinson And Company Shield for catheter introducer needles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944728A (en) * 1988-10-17 1990-07-31 Safe Medical Devices, Inc. Intravenous catheter placement device
EP0606695A1 (en) * 1991-09-18 1994-07-20 Becton, Dickinson and Company IV infusion or blood collection guard assembly
WO1994011050A1 (en) * 1992-11-17 1994-05-26 Moris Baroni Catheter introducer assembly including needle shield
EP0749761A1 (en) * 1995-06-20 1996-12-27 The BOC Group plc Medical devices

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9526846B2 (en) 2009-08-19 2016-12-27 Safety Syringes, Inc. Patient-contact activated needle stick safety device
US10314985B2 (en) 2009-08-19 2019-06-11 Safety Syringes, Inc. Patient-contact activated needle stick safety device
US11400234B2 (en) 2009-08-19 2022-08-02 Safety Syringes, Inc. Patient-contact activated needle stick safety device
WO2016019213A1 (en) 2014-07-31 2016-02-04 Dow Global Technologies Llc In-line dynamic mixing apparatus for flocculating and dewatering oil sands fine tailings
WO2018022352A1 (en) 2016-07-25 2018-02-01 Dow Global Technologies Llc Acoustic mixing for flocculant addition to mineral suspensions
WO2018057325A1 (en) 2016-09-23 2018-03-29 Dow Global Technologies Llc Process for tailings remediation
WO2018063810A1 (en) 2016-09-27 2018-04-05 Dow Global Technologies Llc Process for dewatering an aqueous process stream

Also Published As

Publication number Publication date
NO20022106L (en) 2002-07-01
EP1225947A1 (en) 2002-07-31
GB2355933A (en) 2001-05-09
CN1387448A (en) 2002-12-25
NO20022106D0 (en) 2002-05-02
MXPA02004396A (en) 2004-09-10
GB9925890D0 (en) 1999-12-29
JP2003512903A (en) 2003-04-08
ZA200204369B (en) 2003-04-30
KR20020071857A (en) 2002-09-13
CA2388672A1 (en) 2001-05-10
GB2355933B (en) 2003-08-13
AU7807000A (en) 2001-05-14

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