GB2465390A - Syringe needle cover remover - Google Patents

Syringe needle cover remover Download PDF

Info

Publication number
GB2465390A
GB2465390A GB0820967A GB0820967A GB2465390A GB 2465390 A GB2465390 A GB 2465390A GB 0820967 A GB0820967 A GB 0820967A GB 0820967 A GB0820967 A GB 0820967A GB 2465390 A GB2465390 A GB 2465390A
Authority
GB
United Kingdom
Prior art keywords
boot
syringe
needle
lip
grip
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.)
Withdrawn
Application number
GB0820967A
Other versions
GB0820967D0 (en
Inventor
Christopher William Hudson
Clive Nicholls
Robert Anthony Dix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Owen Mumford Ltd
Original Assignee
Owen Mumford Ltd
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 Owen Mumford Ltd filed Critical Owen Mumford Ltd
Priority to GB0820967A priority Critical patent/GB2465390A/en
Publication of GB0820967D0 publication Critical patent/GB0820967D0/en
Priority to JP2011543821A priority patent/JP5559198B2/en
Priority to PCT/GB2009/051557 priority patent/WO2010055357A1/en
Priority to CN200980152099.4A priority patent/CN102264419B/en
Priority to US13/129,418 priority patent/US8998855B2/en
Priority to EP09756554.3A priority patent/EP2355874B1/en
Publication of GB2465390A publication Critical patent/GB2465390A/en
Withdrawn legal-status Critical Current

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
    • 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
    • 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
    • A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
    • A61M2005/3215—Tools enabling the cap placement
    • 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
    • A61M5/3204—Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices

Abstract

Apparatus for facilitating the removal of a boot3from a pre-filled syringe1, the boot3providing a sterile cover for a needle of the syringe, and the syringe being configured to be loaded into an injection device. The apparatus comprises a hollow cylindrical body for substantially enclosing a boot3, a lip or lips6, 105projecting inwardly from an open end4, 104of said body and configured to engage with a junction between the boot3and a proximal end of the syringe body, and a grip107extending axially from said body and configured to project outwardly through an open end of an injecting device. This arrangement allows a user to remove the boot from the syringe by holding and pulling on said grip. The apparatus may be formed from interlocking portions5a, 5band these portions may have a hinged and/ or a connecting interlocking arrangement7.

Description

SYRINGE NEEDLE COVER REMOVER
Technical field
The present invention relates to syringe needle cover removers and to injection devices incorporating such removers.
Background
Various types of injection devices are available for assisting with the injection of a medicament into a patient (human or animal), and which are configured to receive a standard, pre-filled glass or plastic syringe tipped with an injection needle. These devices may have a dose setting mechanism and a main drive spring for driving a plunger into the syringe so as to expel the medicament out through the needle. Injection devices may comprise a further spring for driving the needle out of the device housing into the patients skin, prior to activation of the main drive spring to expel the medicament.
In order to maintain sterility prior to use, and to avoid "sticking" injuries, the pre-filled syringe is supplied to the injection device assembler with a rubber or plastic cap or "boot" covering the needle. The boot has an interior space for containing the needle, and a sealing end that abuts the adjacent end of the syringe body to seal that inner space. Immediately prior to use, a user (e.g. healthcare professional or patient) must remove the boot to uncover the needle.
This is typically achieved using a boot removal tool that is inserted by a user into the injecting end of the device. The tool comprises a set of sprung fingers that ride over and along the boot as the tool is pushed into the device. The fingers then snap into the junction between the syringe end and the boot. The user can the pull out the tool, bringing the cap with it.
Particularly in the case of expensive medicaments, it is extremely important to minimise the failure rate of assembled injection devices. Considering the boot removal solution outlined in the previous paragraph, it may be difficult to achieve exactly the right degree of flexibility in the fingers to ensure that they can ride over the boot whilst still providing sufficient force to close over the junction at the rear of the boot.
Summary
It is an object of the present invention to provide a boot removal mechanism that is both easy to use and reliable, reducing the failure rate of assembled injection devices.
According to a first aspect of the present invention there is provided apparatus for facilitating the removal of a boot from a pre-filled syringe, the boot providing a sterile cover for a needle of the syringe, and the syringe being configured to be loaded into an injection device, the apparatus comprising: a hollow cylindrical body for substantially enclosing a boot; a lip or lips projecting inwardly from an open end of said body and configured to engage with a junction between the boot and a proximal end of the syringe body; and a grip extending axially from said body and configured to project outwardly through an open end of an injecting device, wherein a user can remove the boot from a syringe by holding and pulling on said grip.
The apparatus may be of a substantially rigid material, e.g. a rigid plastics material.
The grip may be provided with a waist or undercut to aid gripping by a user and/or to allow the grip to be engaged by a secondary boot removal tool held by a user.
The apparatus is preferably dimensioned to allow the syringe and apparatus to be inserted through a casing part of an injection device.
In one embodiment of the invention, the apparatus may comprise two substantially identical portions provided with complimentary interlocking features such that the portions can be placed around a boot covering a needle, and snapped together to cause the lip or lips to engage said junction.
In a second embodiment of the invention the apparatus comprises a single moulded component provided with a slot extending in an axial direction along said body from said lip or lips, the slot being dimensioned to allow a boot to be loaded into the opening within the body in a transverse direction such that said lip or lips engage the junction between the boot and a proximal end of the syringe body.
According to a second aspect of the present invention there is provided an injection device comprising a pre-filled syringe having a needle and a boot providing a sterile cover for the needle, and means for assisting with the injection of medicament from the syringe, the device further comprising apparatus according to the above first aspect of the present invention for facilitating removal of the boot from the needle by a user.
Brief Description of the Drawings
Figure 1 illustrates boot removal apparatus according to a first embodiment of the present invention, the apparatus being assembled about a boot of a pre-filled syringe; Figure 2 illustrates an intermediate stage in the assembly of an injection device comprising the boot removal apparatus of Figure 1; Figure 3 illustrates an assembled state of the injection device of Figure 1; Figure 4 illustrates a step of removing the boot removal apparatus, and captured boot, from the assembled device of Figure 3; Figure 5 illustrates boot removal apparatus according to a second embodiment of the present invention, the apparatus being assembled about a boot of a pre-filled syringe; Figure 6 illustrates the boot removal apparatus of Figure 5 following loading of a pre-filled syringe; and Figure 7 illustrates a further embodiment of a boot removal apparatus.
Detailed Description
Apparatus will now be described that enables the easy and reliable removal of a boot or cap covering a needle of a pre-filled syringe. As has already been outlined above, an assembler of injection devices (e.g. auto-injectors and the like) will obtain pre-filled syringes from a supplier. The assembler may have little or no influence over the design of the syringes including the boots, and may therefore have to ensure that its device design and assembly process is compatible with the syringe design.
A typical syringe comprises a body containing the medicament, a plunger located within the body and extending outwardly therefrom, and a hypodermic needle coupled to the opposite end of the body. A rubber or plastics boot covers the needle and seals around a shoulder portion of the body. Figure 1 illustrates such a syringe 1 with body 2 and boot 3. At the junction between the boot 3 and the distal end of the body 2, a small axial gap 4 exists.
Figure 1 also shows two substantially identical boot remover "halves" 5a and Sb. Each half is moulded as a single piece from a rigid plastics material. Figure 1 shows a lower half 5b placed around the underside of the syringe boot 2.
Each of the proximal ends of the halves are provided with an inwardly projecting lip 6, extending around the circumference of the end. In the assembly state of Figure 1, the lip 6 of the lower half Sb engages with the gap 4 formed between the boot 3 and the end of the syringe. During assembly, the upper half 5a is pressed down onto the lower half 5b such that a series of dimples and cooperating projections 7, formed along the lengths of the halves, snap together, causing the boot remover to completely surround the boot.
Figure 2 illustrates the syringe 1 being inserted into the casing 8 of an injection device 9. The injection device is not shown in any detail, other than an internal mechanism 10. The outer diameters of the syringe 1 and the boot 3 are such that the syringe can be inserted through the casing from an upper opening in the casing until the syringe arrives at some lower stop. This position is illustrated in Figure 3. It can be seen from the Figure that a grip or knob 11 formed at the end of the boot 3 projects through an opening 12 at an end of the casing. The grip 11 is undercut to assist a user in grasping the grip. Although not illustrated in the Figures, the end of the casing through which the syringe is inserted is subsequently closed to secure the syringe in place.
Figure 4 illustrates in turn the injection device following removal of the cap by a user, i.e. by grasping and pulling on the grip 11. The needle 13 is then exposed although, at this stage and prior to firing the device, it remains within the casing.
Figure 5 illustrates an alternative boot remover apparatus 100. The syringe 1 is identical to the syringe described above and like reference numerals are used to identify its various components. The boot remover apparatus 100 is formed as a single, moulded plastics member. A body portion 101 is generally cylindrical, having a hollow interior space 102. A proximal end 103 of the body is provided with an opening 104. A lip 105 extends around the circumference of the opening 104, projecting slightly inwards. A slot 106 extends from the opening 105, to a point about midway along the length of the apparatus 100. At this point, the body 101 extends into a grip 107 which may be hollow or solid.
The grip 107 narrows slightly into a waist section 108. The outer surfaces of the waist are provided with ridges 109 to improve a user's grip.
It will be appreciated from Figure 5 that the boot 3 of the syringe 1 can be pressed through the slot 106 provided in the body, into the interior space 102, providing that the width of the slot is greater than the narrowed diameter of the junction between the syringe end and the boot. In some cases, the width of the slot may be slightly less than this diameter, so that once pressed into the body the boot (and syringe) are held in place. However, this may not be necessary as, once the syringe and remover are installed in the injection device, the boot is prevented from falling out of the remover by the interior configuration of the injection device. Figure 6 illustrates the syringe following pressing of the boot into the boot remover.
As with the apparatus described with reference to Figures 1 to 4, the syringe and boot remover arrangement are subsequently loaded into an injection device, by insertion through a loading opening of the device. Once installed, the grip 107 projects through an injection end opening of the device, allowing a user to remove the remover by gripping and pulling on the grip 107.
Figure 7 illustrates a further embodiment of a boot removal apparatus 200. This is similar to the apparatus of Figure 1, except that the two halves of the device 201a, 201b are hingeably coupled together along one side by a pair of hinges 202. During assembly, a first of the halves 201a is placed beneath the syringe body, following which the second half 201 b is folded over and snapped into place.
It will be appreciated by the person of skill in the art that various modifications may be made to the above described embodiments without departing from the scope of the invention.

Claims (8)

  1. CLAIMS: 1. Apparatus for facilitating the removal of a boot from a pre-filled syringe, the boot providing a sterile cover for a needle of the syringe, and the syringe being configured to be loaded into an injection device, the apparatus comprising: a hollow cylindrical body for substantially enclosing a boot; a lip or lips projecting inwardly from an open end of said body and configured to engage with a junction between the boot and a proximal end of the syringe body, the lip or lips being substantially rigid with respect to said body; and a grip extending axially from said body and configured to project outwardly through an open end of an injecting device, wherein a user can remove the boot from a syringe by holding and pulling on said grip.
  2. 2. Apparatus according to claim 1, the apparatus being of a substantially rigid material.
  3. 3. Apparatus according to claim I or 2, said grip being provided with a waist or undercut to aid gripping by a user and/or to allow the grip to be engaged by a secondary boot removal tool held by a user.
  4. 4. Apparatus according to any one of the preceding claims, the apparatus being dimensioned to allow the syringe and apparatus to be inserted through a casing part of an injection device.
  5. 5. Apparatus according to any one of the preceding claims, the apparatus being formed as two substantially identical portions provided with complimentary interlocking features such that the portions can be placed around a boot covering a needle, and snapped together to cause the lip or lips to engage said junction.
  6. 6. Apparatus according to claim 5, wherein said two substantially identical portions are hingeably connected together.
  7. 7. Apparatus according to any one of claims 1 to 4, the apparatus comprising a single moulded component provided with a slot extending in an axial direction along said body from said lip or lips, the slot being dimensioned to allow a boot to be loaded into the opening within the body in a transverse direction such that said lip or lips engage the junction between the boot and a proximal end of the syringe body.
  8. 8. An injection device comprising a pre-filled syringe having a needle and a boot providing a sterile cover for the needle, and means for assisting with the injection of medicament from the syringe, the device further comprising apparatus according to any one of the preceding claims to facilitate removal of the boot from the needle by a user.
GB0820967A 2008-11-17 2008-11-17 Syringe needle cover remover Withdrawn GB2465390A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB0820967A GB2465390A (en) 2008-11-17 2008-11-17 Syringe needle cover remover
JP2011543821A JP5559198B2 (en) 2008-11-17 2009-11-17 Syringe and needle cover remover
PCT/GB2009/051557 WO2010055357A1 (en) 2008-11-17 2009-11-17 Syringe and needle cover remover
CN200980152099.4A CN102264419B (en) 2008-11-17 2009-11-17 Syringe and needle cover remover
US13/129,418 US8998855B2 (en) 2008-11-17 2009-11-17 Syringe and needle cover remover
EP09756554.3A EP2355874B1 (en) 2008-11-17 2009-11-17 Syringe and needle cover remover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0820967A GB2465390A (en) 2008-11-17 2008-11-17 Syringe needle cover remover

Publications (2)

Publication Number Publication Date
GB0820967D0 GB0820967D0 (en) 2008-12-24
GB2465390A true GB2465390A (en) 2010-05-19

Family

ID=40194727

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0820967A Withdrawn GB2465390A (en) 2008-11-17 2008-11-17 Syringe needle cover remover

Country Status (6)

Country Link
US (1) US8998855B2 (en)
EP (1) EP2355874B1 (en)
JP (1) JP5559198B2 (en)
CN (1) CN102264419B (en)
GB (1) GB2465390A (en)
WO (1) WO2010055357A1 (en)

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WO2014031521A1 (en) * 2012-08-20 2014-02-27 West Pharmaceutical Services, Inc. Needle shield removal tool

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CN107106280A (en) 2014-12-23 2017-08-29 奥特梅德私人有限公司 Conveying equipment, system and associated method
CN108290008B (en) * 2015-12-08 2024-03-08 贝克顿迪金森法国公司 Cap with hemispherical portion for medical injector
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CN102264419B (en) 2013-09-04
US20120029439A1 (en) 2012-02-02
JP2012508634A (en) 2012-04-12
US8998855B2 (en) 2015-04-07
EP2355874A1 (en) 2011-08-17
CN102264419A (en) 2011-11-30
JP5559198B2 (en) 2014-07-23
WO2010055357A1 (en) 2010-05-20
GB0820967D0 (en) 2008-12-24

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