EP1469897A1 - Housing for retractable needle with means for disinfecting the skin at the puncture site - Google Patents

Housing for retractable needle with means for disinfecting the skin at the puncture site

Info

Publication number
EP1469897A1
EP1469897A1 EP20020781637 EP02781637A EP1469897A1 EP 1469897 A1 EP1469897 A1 EP 1469897A1 EP 20020781637 EP20020781637 EP 20020781637 EP 02781637 A EP02781637 A EP 02781637A EP 1469897 A1 EP1469897 A1 EP 1469897A1
Authority
EP
European Patent Office
Prior art keywords
housing
syringe
needle
end wall
layer
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Withdrawn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
EP20020781637
Other languages
German (de)
French (fr)
Inventor
Michael Jemec
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1469897A1 publication Critical patent/EP1469897A1/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Withdrawn legal-status Critical Current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
    • A61M5/001—Apparatus specially adapted for cleaning or sterilising syringes or needles
    • 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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3232—Semi-automatic needle retraction, i.e. in which triggering of the needle retraction requires a deliberate action by the user, e.g. manual release of spring-biased retraction means
    • 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
    • A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
    • A61M2005/3118—Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a needle cannula
    • 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
    • A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • 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
    • A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • A61M5/285—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle with sealing means to be broken or opened
    • A61M5/286—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle with sealing means to be broken or opened upon internal pressure increase, e.g. pierced or burst
    • 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
    • A61M5/3287—Accessories for bringing the needle into the body; Automatic needle insertion

Definitions

  • the present invention relates to medical appliances, and more particularly to the area of retractable needles that are housed, together with an elastic pusher, in a usually cylindrical housing, which may be independent or may be part of a pen-type syringe for subcutaneous injections or for making punctures for the purpose of examining the blood.
  • retractable needles avoids the risk of inadvertent needle sticks and the associated risks, and reduces the emotional tension of the person receiving the injection, which would be aggravated by the sight of a fixed needle.
  • retractable needles and the associated syringes are often used directly by patients who have to undergo long-term or indefinite therapies, such as insulin therapy.
  • the inventor of the present invention has devised a cylindrical housing for a retractable needle, in which there is applied to its surface that it is to be pressed against the skin a layer of absorbent material soaked with disinfectant and covered by a removable impermeable membrane to protect it over time.
  • the said disinfectant-soaked layer must necessarily be pressed against the skin in the area where the needle is to be inserted. This guarantees that this area is disinfected, more especially if facilitated and enhanced by local rubbing by the patient.
  • the point of the local rubbing is also to disinfect that area of the skin which is immediately opposite the centre of the said disinfectant-containing layer, in cases in which there is a hole in this layer for the needle to pass through.
  • the subject of the present invention is therefore a housing as described in the appended Claim 1.
  • Figure 1 a longitudinal section through a housing according to the invention in the case in which it coincides with the end part of a pen-type syringe for subcutaneous injections; in Figure 2 a longitudinal section through another housing according to the invention in the case in which it is an independent part housed in the end part of a syringe capable of containing it in the interior of its end part; and - in Figure 3 an end view of that part of the housing seen in Fig. 2 which is adjacent to the interior of a syringe, fitted with a membrane with predefined breakage lines.
  • FIG 1 shows a cylindrically shaped housing 1 consisting of the end part 3t of a "pen” type syringe 3 for subcutaneous injections, which contains in its interior a retractable needle 2 with the associated elastic return means 22 (a simple spring in the case depicted).
  • the abovementioned housing ends in an end wall 4 with a central hole 5 for the needle 2 to pass through, to the outer face 4e of which there is applied, by adhesives or other methods of known type, a layer 7 of absorbent material, preferably of spongy type to give it a certain softness, and impregnated with one of the numerous types of disinfectant in the fluid or liquid state.
  • This layer 7 is completely covered by an impermeable membrane 6 cut for example from aluminium foil, and attached to the housing 1 by adhesives, heat-welding or other such system. Projecting from this membrane 6 is a tab 6e that can be used to pull the said membrane 6 off when the syringe 3 is to be used to make an injection by pressing onto the retractable needle 2 a cartridge 10 containing the liquid 12 to be injected.
  • the said layer 7 preferably itself has a hole 7f for the retractable needle 2 to pass through.
  • the end wall 4 and consequently the abovementioned layer 7 is placed against the area of the skin where the needle is to penetrate, thus achieving the result that the mere contact, especially if accompanied by slight local rubbing, results in disinfection of the said area such as to reduce the risk of infection and the harmful consequences which can be occasioned thereby.
  • FIG. 2 Another illustrative embodiment of a housing 11 according to the invention, with identical aims and functions, is drawn in Figure 2.
  • the housing 11 of the invention containing in its interior a retractable needle 2 with its elastic return means 22, forms an independent part and is inserted in the open end part 13t of a pen-type syringe 13.
  • This system was devised by the same inventor, and is disclosed in another Swiss patent application) .
  • the cylindrical housing 11 has an end wall 4 containing a hole 5, to the outer face 4e of which there is applied, in exactly the same way as described with respect to the previous example, a layer 7 impregnated with disinfectant and covered by a membrane 7, which seals it to maintain its effectiveness over time, and this membrane can be pulled off using a tab 7e projecting from it.
  • This additional membrane 26 comprises (as can be seen in Fig. 3) a number of predefined breakage lines Li so that it can be torn by the cartridge 10 containing the liquid 12 to be injected when the cartridge is pressed against it in the course of an injection.

Abstract

A description is given of a housing (1, 11) capable of containing in its interior a retractable needle for a 'pen' type syringe (3, 13) for subcutaneous injections or punctures, terminating in an end wall (4) with a central hole (5) for the said needle (2) to pass through. There is applied to the outer face (4e) of the said end wall (4) a layer (7) of absorbent material impregnated with disinfectant and completely covered by an impermeable membrane (6, 16) attached securely to and removably from the said cylindrical housing (1, 11).

Description

HOUSING FOR RETRACTABLE NEEDLE WITH MEANS FOR DISINFECTING THE SKIN AT THE PUNCTURE SITE
The present invention relates to medical appliances, and more particularly to the area of retractable needles that are housed, together with an elastic pusher, in a usually cylindrical housing, which may be independent or may be part of a pen-type syringe for subcutaneous injections or for making punctures for the purpose of examining the blood.
For example, in an injection syringe, as is well known, when the syringe plunger is operated, a cartridge containing the liquid to be injected is pushed onto the needle and pushes the needle out of the above-described housing to make an injection. After this operation, the needle is withdrawn into the abovementioned cylindrical housing by the said elastic striker, which usually consists of a spring or suchlike member.
The same operation, with other mechanisms and component parts, is performed with the above-described puncture syringes .
The use of retractable needles, as is known to those skilled in the art, avoids the risk of inadvertent needle sticks and the associated risks, and reduces the emotional tension of the person receiving the injection, which would be aggravated by the sight of a fixed needle.
It is important to bear in mind that retractable needles and the associated syringes are often used directly by patients who have to undergo long-term or indefinite therapies, such as insulin therapy.
These patients often forget, or are unable, to disinfect the area of the epidermis where the injection is to be performed, so there is a risk of local infections .
To avoid this problem and its potential harmful effects on the patient's health, the inventor of the present invention has devised a cylindrical housing for a retractable needle, in which there is applied to its surface that it is to be pressed against the skin a layer of absorbent material soaked with disinfectant and covered by a removable impermeable membrane to protect it over time.
To perform an injection, the said disinfectant-soaked layer must necessarily be pressed against the skin in the area where the needle is to be inserted. This guarantees that this area is disinfected, more especially if facilitated and enhanced by local rubbing by the patient.
The point of the local rubbing is also to disinfect that area of the skin which is immediately opposite the centre of the said disinfectant-containing layer, in cases in which there is a hole in this layer for the needle to pass through.
When using a housing according to the invention there is therefore almost absolute certainty that the area of the skin where the injection is performed is disinfected, thereby fulfilling the result which the inventor set out to achieve.
The subject of the present invention is therefore a housing as described in the appended Claim 1.
A description will now be given of two preferred illustrative embodiments of the housing of the invention, selected from the various embodiments open to a person skilled in the art when putting into practice the teachings of the abovementioned Claim 1. This description will also make reference to the appended drawings, which show:
- in Figure 1 a longitudinal section through a housing according to the invention in the case in which it coincides with the end part of a pen-type syringe for subcutaneous injections; in Figure 2 a longitudinal section through another housing according to the invention in the case in which it is an independent part housed in the end part of a syringe capable of containing it in the interior of its end part; and - in Figure 3 an end view of that part of the housing seen in Fig. 2 which is adjacent to the interior of a syringe, fitted with a membrane with predefined breakage lines.
Turning first to Figure 1, this shows a cylindrically shaped housing 1 consisting of the end part 3t of a "pen" type syringe 3 for subcutaneous injections, which contains in its interior a retractable needle 2 with the associated elastic return means 22 (a simple spring in the case depicted).
The abovementioned housing ends in an end wall 4 with a central hole 5 for the needle 2 to pass through, to the outer face 4e of which there is applied, by adhesives or other methods of known type, a layer 7 of absorbent material, preferably of spongy type to give it a certain softness, and impregnated with one of the numerous types of disinfectant in the fluid or liquid state.
This layer 7 is completely covered by an impermeable membrane 6 cut for example from aluminium foil, and attached to the housing 1 by adhesives, heat-welding or other such system. Projecting from this membrane 6 is a tab 6e that can be used to pull the said membrane 6 off when the syringe 3 is to be used to make an injection by pressing onto the retractable needle 2 a cartridge 10 containing the liquid 12 to be injected.
The said layer 7 preferably itself has a hole 7f for the retractable needle 2 to pass through.
After the membrane 6 has been removed, the end wall 4 and consequently the abovementioned layer 7 is placed against the area of the skin where the needle is to penetrate, thus achieving the result that the mere contact, especially if accompanied by slight local rubbing, results in disinfection of the said area such as to reduce the risk of infection and the harmful consequences which can be occasioned thereby.
Another illustrative embodiment of a housing 11 according to the invention, with identical aims and functions, is drawn in Figure 2. In this case the housing 11 of the invention, containing in its interior a retractable needle 2 with its elastic return means 22, forms an independent part and is inserted in the open end part 13t of a pen-type syringe 13. (This system was devised by the same inventor, and is disclosed in another Swiss patent application) .
As before, the cylindrical housing 11 has an end wall 4 containing a hole 5, to the outer face 4e of which there is applied, in exactly the same way as described with respect to the previous example, a layer 7 impregnated with disinfectant and covered by a membrane 7, which seals it to maintain its effectiveness over time, and this membrane can be pulled off using a tab 7e projecting from it.
All the observations made with respect to the previous example also apply in this case. The only difference is that on the rear end 11s of the housing 11 adjacent to the interior of the syringe 13 is another impermeable membrane 26 to prevent the ingress of air and potential air-borne germs into the housing 11 when the latter is not contained in a syringe, and is therefore exposed to this risk.
This additional membrane 26 comprises (as can be seen in Fig. 3) a number of predefined breakage lines Li so that it can be torn by the cartridge 10 containing the liquid 12 to be injected when the cartridge is pressed against it in the course of an injection.
As before, when using a housing 11 according to the invention, that area of the cutis where an injection is to be carried out is disinfected by acting as described in the previous case. The same applies to the type of instrument already mentioned (not illustrated) for making simple punctures, the only difference being that, because such instruments are usually used by doctors or specialist personnel, there is almost no risk of disinfection not being done or being done inadequately, and the housing of the invention chiefly has the (not insignificant) advantage of simplifying and reducing the operations of disinfection, which no longer require the use of cotton wool having to be soaked in disinfectant.
It will be obvious that both the shape and the nature of the disinfectant-impregnated layer and of the membranes described above can be modified to suit design requirements and can differ from those illustrated and described herein.

Claims

Claims
1. Housing (1, 11) capable of containing in its interior a retractable needle for a "pen" type syringe (3, 13) for subcutaneous injections or punctures, terminating in an end wall (4) with a central hole (5) for the said needle (2) to pass through, characterized in that there is applied to the outer face (4e) of the said end wall (4) a layer (7) of absorbent material impregnated with disinfectant and completely covered by an impermeable membrane (6, 16) attached securely to and removably from the said cylindrical housing (1, 11).
2. Housing (1, 11) according to Claim 1, characterized in that the said membrane (6, 16) is attached to the said end wall (4) and can be pulled off by a tab (6e, 16e) projecting from it.
3. Housing (11) according to Claim 1, capable of being inserted into the end part (13t) of a syringe (13) for subcutaneous injections, characterized in that another membrane (26) covers the end (11s) thereof adjacent to the interior of the syringe (13), and has predefined breakage lines (Li) capable of being torn by the cartridge (10) containing the liquid (12) to be injected when it is pushed into the said syringe (13) to perform an injection.
4. Housing according to one of the preceding claims, in which the said membranes (6, 16, 26) are made of aluminium foil.
5. Housing according to one of the preceding claims, in which the said layer (7) of absorbent material has a spongy consistency.
EP20020781637 2002-01-25 2002-12-12 Housing for retractable needle with means for disinfecting the skin at the puncture site Withdrawn EP1469897A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH1222002 2002-01-25
CH1222002 2002-01-25
CH1482002 2002-01-29
CH1482002 2002-01-29
PCT/IB2002/005351 WO2003061735A1 (en) 2002-01-25 2002-12-12 Housing for retractable needle with means for disinfecting the skin at the puncture site

Publications (1)

Publication Number Publication Date
EP1469897A1 true EP1469897A1 (en) 2004-10-27

Family

ID=27614053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020781637 Withdrawn EP1469897A1 (en) 2002-01-25 2002-12-12 Housing for retractable needle with means for disinfecting the skin at the puncture site

Country Status (2)

Country Link
EP (1) EP1469897A1 (en)
WO (1) WO2003061735A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2006127590A (en) * 2006-08-01 2008-02-10 Владислав Анатольевич Кропачев (RU) DISPOSABLE SYRINGE "OPTIONS"
CN102802701B (en) * 2009-06-17 2015-06-17 尤尼特拉克特注射器公司 Syringe adapter
CN104768598B (en) 2012-10-25 2018-04-06 诺和诺德股份有限公司 Pre-filled disposable syringe device
CN106890382B (en) * 2017-03-16 2023-03-14 珠海凯生医用科技有限公司 Intelligent insulin injection pen
CN107998482A (en) * 2018-01-25 2018-05-08 厦门大学嘉庚学院 Disposable infusion needle and application method
CA3103681A1 (en) * 2018-07-24 2020-01-30 Amgen Inc. Delivery devices for administering drugs

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2080689B (en) * 1980-07-29 1984-10-31 Dent Hugh Robert Sterilising fitments for injection devices
FR2580179A2 (en) * 1985-04-15 1986-10-17 Reveillon Jean Device for parenteral injection
FR2571972A1 (en) * 1984-10-18 1986-04-25 Reveillon Jean Parenteral injection device
US5163908A (en) * 1989-10-16 1992-11-17 Lambert William S Fail safe composite hypodermic syringe with reversible needle and guard assembly
US5267974A (en) * 1992-06-04 1993-12-07 Lambert William S Hypodermic syringe with foam sponge reservoir

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03061735A1 *

Also Published As

Publication number Publication date
WO2003061735A1 (en) 2003-07-31

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