CA2388672A1 - Over-the-needle catheter insertion device - Google Patents
Over-the-needle catheter insertion device Download PDFInfo
- Publication number
- CA2388672A1 CA2388672A1 CA002388672A CA2388672A CA2388672A1 CA 2388672 A1 CA2388672 A1 CA 2388672A1 CA 002388672 A CA002388672 A CA 002388672A CA 2388672 A CA2388672 A CA 2388672A CA 2388672 A1 CA2388672 A1 CA 2388672A1
- Authority
- CA
- Canada
- Prior art keywords
- needle
- catheter
- hub
- pushing
- catheter device
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—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of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
-
- 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
Landscapes
- 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)
- 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 a t its forward end, the means for pushing the hub having a shield at its forwar d end in which the needle tip locates when the pushing means is arrested by sa id stop means.
Description
-I-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.
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 I 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.
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 I 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 11 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.
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 11 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.
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 (13)
1. A catheter device of the kind referred to comprising a needle extending from a support means, a catheter extending from a catheter hub, and means for pushing the hub over the needle from a retracted position to advance the catheter forwardly from the needle and slidable along guide means, the guide means extending forwardly of the hub when the latter is in the retracted position and having stop means at its forward end, and the means for pushing the hub having a shield at its forward end in which the needle tip is adapted to locate 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 of the kind referred to comprising a needle extending from a support means, a catheter extending from a catheter hub, and means for pushing the hub over the needle to advance the catheter forwardly from the needle and slidable along guide means, the guide means extending forwardly of the hub and 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 is adapated to locate when the pushing means is arrested by said stop means and the guide means comprising a pair of spaced parallel fingers.
5. A catheter device according to any one of claims 1 to 4 wherein the means for pushing the hub is adapted to engage the guide means such that reverse movement can be prevented.
6. A catheter device according to claim 5 when dependent on Claim 3 or 4 wherein the fingers incorporate ramped teeth which are adapted to engage the apertures to prevent reverse movement of the means for pushing the hub.
7. A catheter device according to claim 3, 4 or 6 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.
8. A catheter device according to claim 7 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.
9. A catheter device according to claim 7 or claim 8 wherein there is a single camped tooth behind the stop means on each finger to prevent reverse movement of the pushing means after its forward stroke has been completed.
10. 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.
11. 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.
12. 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.
13. A catheter according to any preceding claims in which the needle tip is located forwardly of the forward end of the guide means.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9925890A GB2355933B (en) | 1999-11-03 | 1999-11-03 | Catheter Device |
| GB9925890.7 | 1999-11-03 | ||
| PCT/GB2000/003967 WO2001032253A1 (en) | 1999-11-03 | 2000-10-16 | Over-the-needle catheter insertion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2388672A1 true CA2388672A1 (en) | 2001-05-10 |
Family
ID=10863785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002388672A Abandoned CA2388672A1 (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) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10100102C2 (en) * | 2001-01-03 | 2003-05-28 | Eckert Rosemarie | Catheter puncture set |
| US7922696B2 (en) | 2007-01-24 | 2011-04-12 | Access Scientific, Inc. | Access device |
| EP2152348B1 (en) * | 2007-04-18 | 2015-02-25 | 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 |
| US9526846B2 (en) | 2009-08-19 | 2016-12-27 | Safety Syringes, Inc. | Patient-contact activated needle stick safety device |
| JP6009943B2 (en) | 2010-02-08 | 2016-10-19 | アクセス サイエンティフィック、インク． | Access device |
| US9566087B2 (en) | 2013-03-15 | 2017-02-14 | Access Scientific, Llc | Vascular access device |
| CA2956460A1 (en) | 2014-07-31 | 2016-02-04 | Dow Global Technologies Llc | In-line dynamic mixing apparatus for flocculating and dewatering oil sands fine tailings |
| WO2016176065A1 (en) | 2015-04-30 | 2016-11-03 | Access Scientific, Llc | Vascular access device |
| CN107530525B (en) | 2015-05-15 | 2021-02-26 | 泰尔茂株式会社 | 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 |
| US20190233310A1 (en) | 2016-07-25 | 2019-08-01 | Dow Global Technologies Llc | Acoustic mixing for flocculant addition to mineral suspensions |
| CA3038070A1 (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 |
| JP6953541B2 (en) * | 2017-03-01 | 2021-10-27 | シー・アール・バード・インコーポレーテッドＣ Ｒ Ｂａｒｄ Ｉｎｃｏｒｐｏｒａｔｅｄ | Catheter insertion device |
| CA3054069A1 (en) * | 2017-03-17 | 2018-09-20 | 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4944728A (en) * | 1988-10-17 | 1990-07-31 | Safe Medical Devices, Inc. | Intravenous catheter placement device |
| US5192275A (en) * | 1991-09-18 | 1993-03-09 | Becton, Dickinson And Company | IV infusion or blood collection guard assembly |
| IT227968Y1 (en) * | 1992-11-17 | 1998-01-21 | Moris Baroni | NEEDLE FOR INTRAVENOUS AND EXTRACTABLE, SELF-GLOBAL WITHDRAWALS TO AVOID STITCHES AND CONTACTS TO PEOPLE AND ENVIRONMENTS AFTER USE |
| US5562631A (en) * | 1995-06-07 | 1996-10-08 | Johnson & Johnson Medical, Inc. | Catheter arrangement with interlocking sequenced guarding members for protecting cannula |
| GB9512531D0 (en) * | 1995-06-20 | 1995-08-23 | Boc Group Plc | Medical devices |
| WO1998057689A1 (en) * | 1997-06-16 | 1998-12-23 | Becton Dickinson And Company | Shield for catheter introducer needles |
-
1999
- 1999-11-03 GB GB9925890A patent/GB2355933B/en not_active Expired - Fee Related
-
2000
- 2000-10-16 CA CA002388672A patent/CA2388672A1/en not_active Abandoned
- 2000-10-16 CN CN00815200A patent/CN1387448A/en active Pending
- 2000-10-16 WO PCT/GB2000/003967 patent/WO2001032253A1/en not_active Application Discontinuation
- 2000-10-16 MX MXPA02004396A patent/MXPA02004396A/en not_active Application Discontinuation
- 2000-10-16 KR KR1020027005687A patent/KR20020071857A/en not_active Application Discontinuation
- 2000-10-16 AU AU78070/00A patent/AU7807000A/en not_active Abandoned
- 2000-10-16 EP EP00968115A patent/EP1225947A1/en not_active Withdrawn
- 2000-10-16 JP JP2001534456A patent/JP2003512903A/en not_active Withdrawn
-
2002
- 2002-05-02 NO NO20022106A patent/NO20022106L/en not_active Application Discontinuation
- 2002-05-31 ZA ZA200204369A patent/ZA200204369B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB2355933A (en) | 2001-05-09 |
| MXPA02004396A (en) | 2004-09-10 |
| AU7807000A (en) | 2001-05-14 |
| ZA200204369B (en) | 2003-04-30 |
| JP2003512903A (en) | 2003-04-08 |
| KR20020071857A (en) | 2002-09-13 |
| NO20022106L (en) | 2002-07-01 |
| WO2001032253A1 (en) | 2001-05-10 |
| EP1225947A1 (en) | 2002-07-31 |
| GB2355933B (en) | 2003-08-13 |
| GB9925890D0 (en) | 1999-12-29 |
| CN1387448A (en) | 2002-12-25 |
| NO20022106D0 (en) | 2002-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |