CN1302214A - Needle stick protection apparatus - Google Patents

Needle stick protection apparatus Download PDF

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Publication number
CN1302214A
CN1302214A CN 99804713 CN99804713A CN1302214A CN 1302214 A CN1302214 A CN 1302214A CN 99804713 CN99804713 CN 99804713 CN 99804713 A CN99804713 A CN 99804713A CN 1302214 A CN1302214 A CN 1302214A
Authority
CN
China
Prior art keywords
mentioned
sheath
syringe
locking member
protection apparatus
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.)
Pending
Application number
CN 99804713
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Chinese (zh)
Inventor
布鲁斯·利·基恩
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.)
JIREH TECH PTY Ltd
Original Assignee
JIREH TECH PTY 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
Priority claimed from AUPP2739A external-priority patent/AUPP273998A0/en
Priority claimed from AUPP5795A external-priority patent/AUPP579598A0/en
Priority claimed from AUPP6791A external-priority patent/AUPP679198A0/en
Priority claimed from AUPP7980A external-priority patent/AUPP798098A0/en
Priority claimed from AUPP7979A external-priority patent/AUPP797998A0/en
Priority claimed from AUPP8333A external-priority patent/AUPP833399A0/en
Priority claimed from AUPP8332A external-priority patent/AUPP833299A0/en
Application filed by JIREH TECH PTY Ltd filed Critical JIREH TECH PTY Ltd
Publication of CN1302214A publication Critical patent/CN1302214A/en
Pending legal-status Critical Current

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    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3253—Constructional features thereof, e.g. to improve manipulation or functioning disconnecting the needle hub from the syringe barrel during removal of the sleeve from the syringe barrel
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/581—Means for facilitating use, e.g. by people with impaired vision by audible feedback
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback
    • 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
    • A61M5/3129—Syringe barrels
    • A61M5/3137—Specially designed finger grip means, e.g. for easy manipulation of the syringe rod
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3271—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/348—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub snap lock, i.e. upon axial displacement of needle assembly

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

This invention relates to a needle stick protection apparatus including a shield (30) having an internal through bore which is capable of receiving the barrel of a syringe (10), said bore including a spline (32) or a rib which extends along part of the length of said bore and wherein there is provided a discontinuity (33) in said spline which is adapted to receive a portion (57) of a locking member (50) that is associated with the syringe and which extends laterally beyond the barrel, said discontinuity being aligned with an aperture (34) formed in a side wall of said shield.

Description

Needle stick protection apparatus
The present invention relates to needle stick protection apparatus.
The present invention is particularly suitable for but is not limited to be applied in needle stick protection apparatus, is not subjected to because of the caused shank of hypodermic needle injures with the protection people, but for explanatory purposes will be with this application as a reference.Yet, be appreciated that the present invention also can be used to prevent the repeated use of hypodermic needle.
Syringe comprises a tubular body or tube usually, and this has a narrow outlet that links to each other with the one end, and this outlet is communicated with an external nozzle liquid, can optionally connect a hypodermic needle or analog on the nozzle.The other end of tube can comprise a finger bearing, for example a pair of opposite outside flange, and also syringe can also comprise a piston, and it can be used for injecting the liquid that is stored in tube by nozzle.
The syringe that hypodermic needle is housed is through being usually used in medicine and other liquid infusion in the blood of humans and animals.The syringe that hypodermic needle is housed also is used for extracting liquid out from the blood flow of humans and animals, comprises blood.
Use a special consequence of hypodermic needle to be, may be infected with various infectious microorganisms, comprise and microorganism such as disease associations such as acquired immune deficiency syndrome (AIDS) (acquired immune deficiency syndrome (AIDS)), hepatitis, tetanus and tuberculosis.
Since reuse being infected with of other people hypodermic needle, or owing to pin thrusts in a people's the skin accidentally, this situation in back may take place when the personnel of health care industry handle syringe, infectious microorganism, for example foregoing microorganism can propagate into other people from the people who infects.
In order to prevent the shank injury and/or to reuse hypodermic needle, someone has developed multiple tubular sheath, sheath is used for slidably being installed in syringe body, and can between an off position and an operating position, move, at off position, the tip of pin exposes, and at operating position, the tip of pin is surrounded by the free end of sheath.Several examples of sheath are disclosed in U.S. Patent No. 5,595, in 566 (Vallelunga, in January, 1997).
Sheath comprises a hole that has inside groove usually, and inside groove is used to receive a position that is installed in the locking member on the syringe.Sheath is usually by injection-molded technology manufacturing, and an independent instrument is used for cutting out a circumferential groove on the drum type inner surface in hole.The generation of inside groove is a complicated operations process and relates to additional treatments to sheath.Therefore the manufacturing cost of sheath is very high.
In order to overcome and the relevant shortcoming of inside groove processing, the sheath of being produced by Becton Dickinson that is used for syringe comprises one group of internal projections as bearing.These bearings evenly and are closely arranged at interval along the circumferencial direction of pipe.These bearings are also arranged with staggered relation on the both sides of an imaginary circumference band, and the separated region between the adjacent bearing is used to receive a flange shape locking member that is installed on the syringe.
Though the manufacturing of this sheath is simpler than foregoing, manufacture process needs two cores, and they are recalled from the end opposite of sheath respectively.Therefore, the internal diameter of the opening that links to each other with the sheath free end that is used for around needle tip must be greater than the external diameter of locking member flange, and this flange extends beyond the outer surface of syringe body.Consequently, the free-ended internal diameter of sheath is enough big, and like this, the people can insert a finger in the sheath, thereby the danger of being wounded by stabbing is arranged.When the child of curiosity runs into by the entry needle of this unit protection, be extrahazardous.
In order to address this problem, Becton Dickinson provides a kind of medicated cap recently, and it can lock the free end of sheath as required.Yet, be appreciated that medicated cap itself is put into sheath just might make the people injured.
In addition, we notice, the intensity that the bearing of tight spacing provides for the surrounding wall portion of sheath stoped sheath when flange locking member and the bearing slip interlock the distortion that should occur.Consequently, when being moved with respect to locking member, sheath exists very big resistance, and for this reason, people always as far as possible firmly do not retract syringe body enough far away so that return sheath, thereby the flanged limits of locking member is being tilted between the opposed adjacent bearing.
Also observe, applying one to the sheath free end during roughly along the power of syringe direction, being limited in the locking member that tilts to be separated by between the bearing can easily split away off.Consequently, pin and syringe can reuse, and perhaps may injure other people after abandoning.
In addition, unless the existing syringe that the front is related to type carries out some transformation, otherwise previously described many sheaths can not use with these syringes.Outward flange is for example added in this transformation, will relate to change usually and/or replaces existing mould or instrument and/or carry out additional treatments in the course of processing, and this will increase cost, consuming time and at least temporarily interrupt the supply of syringe.
We are also noted that sheath mobile two handss of use that need between off position and operating position.Usually, sheath is held by one, and the another hands is used to keep syringe.
We notice that the personnel of implementation and operation will use hypodermic needle in many medical procedures, and their hand channel regular meeting is coated with and expired such as liquid such as blood, thereby generally very smooth.Because being everlasting, their hand channel slides on the sheath, therefore the sharp end that when the operation hypodermic needle, may can touch hypodermic needle accidentally.
Past attempts is found, uses the people of hypodermic needle often will keep the skin of patient around being needled into a little with the finger of a hands, so that any damage that may cause when being needled into people's skin or extraction minimizes.Therefore can utilize a hand operated and can be when pin be extracted out from people's skin the cover cap sheath of pin be optimal.
Target of the present invention is to eliminate one or more above-mentioned shortcomings, and a kind of needle stick protection apparatus reliably and efficiently in use is provided.
In view of noted earlier, one aspect of the present invention relates to a kind of needle stick protection apparatus, and it comprises:
A sheath, it has an interior bone that can receive syringe cylinder, and above-mentioned hole comprises a spline or rib, has formed a discontinuous segment in the spline, and in order to receive a position of a locking member, locking member links to each other with syringe and horizontal expansion exceeds tube.
Another aspect of the present invention relates to a kind of needle stick protection apparatus, and it comprises:
A sheath, it has an interior bone that can receive syringe cylinder, above-mentioned hole comprises the spline or the rib that extend along the partial-length at least in above-mentioned hole, and in above-mentioned spline, provide a discontinuous segment, in order to receive a position of a locking member, locking member links to each other with syringe and horizontal expansion exceeds tube, and above-mentioned discontinuous segment is aimed at a perforate in the sidewall that is formed on above-mentioned sheath.
Preferably employing is, discontinuous segment is formed by a part in a moulding process, and this part is recalled by the above-mentioned perforate that is formed in the sheath sidewall.
What preferably adopt is, sheath comprises one group of spline of along the circumferential direction being separated by, formed a discontinuous segment respectively in they each, this discontinuous segment is aimed at a corresponding perforate that is formed in the sheath sidewall, and these discontinuous segments lateral alignment in above-mentioned sheath.
Spline can extend along most of length of sheath or the selected part of sheath.
The spline of sheath is preferred for the frictional constraint locking member, and can change shape by sheath or the selected part of sheath at least in part in order to the resistance that stops locking member to slide with respect to above-mentioned sheath and reduce.Specifically, at least some in the spline are separated by the wall portion of an easy strain.For example, sheath can be made as high density poly propylene by a kind of elastically deformable plastics, and compares with the combination thickness of spline with the sidewall in the sheath, and wall portion can be a laminate structure.
In certain embodiments, can comprise a small amount of several spline in the hole, two or three splines for example, they along the circumferencial direction homogeneous phase in hole every, and each spline is all separated by the wall part of an elastically deformable.
In further embodiments, can comprise independently many group splines in the hole, and these groups can along the circumferencial direction homogeneous phase in hole every.The adjacent spline group is preferably separated by the wall part of an elastically deformable, and the circle spacing between the adjacent set is preferably greater than one group of circle spacing that spline is occupied.For example, in a preferred embodiment, comprise two pairs of opposed splines in the hole, and the circle spacing between the every pair of spline is greater than every pair of circle spacing that spline is occupied.
Sheath can also comprise outside gripping device, so that people hold sheath, particularly when hope navigates to operating position with sheath.Gripping device can comprise a rough surface, as knurled surface.Perhaps, gripping device can comprise the one or more ribs that extend around at least a portion of sheath lateral wall.In addition, gripping device can be positioned near the discontinuous segment.For example, in a preferred embodiment, sheath comprises two outside circumferential ribs or flange, and they lay respectively at the both sides that are formed on the perforate in the sheath.
In yet another aspect, the present invention relates to a kind of method that is used to make following type sheath, this sheath has an interior bone that can receive syringe cylinder, above-mentioned hole comprises a spline that extends along the partial-length at least in above-mentioned hole, and spline comprises a discontinuous segment, discontinuous segment is used to receive a position of a locking member that links to each other with syringe, and said method comprises:
Two pieces are provided, and each piece has a stayed surface respectively, has formed a complementary die cavity of the profile with manufactured sheath in the stayed surface, and discontinuous segment is by forming from an outward extending projection of above-mentioned die cavity;
A main core is provided, the interior shape complementation of itself and manufactured sheath, above-mentioned main core has a groove, the shape complementarity of this groove and spline;
Two pieces are put together, so that two stayed surfaces are leaning mutually, and two die cavity cooperations to be forming a hole, and main core is supported in the above-mentioned hole, and a free end of projection is received and is engaged in the surface of groove of main core;
A kind of curable plastics are passed through a runnerless injection that is communicated with the hole in the hole;
Separate two pieces, and
Plastic sheath is peeled off from core.
In yet another aspect, the present invention relates to a kind of method that is used to make following type sheath, this sheath has an interior bone that can receive syringe cylinder, above-mentioned hole comprises a spline that extends along the partial-length at least in above-mentioned hole, and spline comprises a discontinuous segment, discontinuous segment is used to receive a position that is installed in the locking member on the syringe, and said method comprises:
Two pieces are provided, and each piece has a stayed surface respectively, has formed a complementary die cavity of the profile with manufactured sheath in the stayed surface;
A main core is provided, the interior shape complementation of itself and manufactured sheath, above-mentioned main core has a groove, the shape complementarity of this groove and spline, and a pin is provided, it can optionally stretch in the above-mentioned groove, so that form discontinuous segment in spline;
Two pieces are put together, so that two stayed surfaces are leaning mutually, and two die cavity cooperations to be forming a hole, and main core is supported in the above-mentioned hole, and a pin part of having blocked groove;
A kind of curable plastics are passed through a runnerless injection that is communicated with the hole in the hole;
Separate two pieces;
Recall pin, and
Plastic sheath is peeled off from core.
In yet another aspect; the present invention relates to a kind of needle stick protection apparatus; below it can be installed to after assembling on the syringe of type; this syringe comprises a tubular body or tube; tube has a cylinder side wall and one and is formed on the end wall and the narrow openings that is communicated with an external nozzle liquid; optionally hypodermic needle of operability connection on the nozzle, above-mentioned needle stick protection apparatus comprises:
A cover tubular sheath, it can be installed in the tube portion of syringe, thereby can between an off position and an operating position, move, at off position, the exposed tip of hypodermic needle can be thrust in people's the skin, and at operating position, above-mentioned sheath can prevent that the tip of hypodermic needle from touching people's skin, and above-mentioned sheath has one and is positioned at the intermediary inner discontinuous segment of its opposite ends;
A locking member, it is placed in, and above-mentioned sheath is inner also can be moved with respect to above-mentioned sheath, have on the above-mentioned locking member and be used for locking member is installed in erecting device on the syringe, above-mentioned locking member has a marginal portion, it helps above-mentioned sheath is limited in an operating position when being arranged in above-mentioned discontinuous segment, above-mentioned edge be suitable for along substantial transverse stretch out from syringe exceed the cylinder side wall of syringe, and
Clamping device, it is placed in above-mentioned sheath inside, so that above-mentioned locking member is limited on the syringe.
Sheath is preferably made by the plastic material of elastically deformable, and is generally type noted earlier.Preferred construction is that discontinuous segment is one and is formed on along the fracture in the most of spline that extends of sheath endoporus.Preferred construction is that discontinuous segment is aimed at a perforate that is formed in the sheath sidewall.Preferred construction is, discontinuous segment is formed by a part in a moulding process, and this part is recalled by above-mentioned perforate subsequently.
Sheath preferably comprises the positioner that links to each other with the one end, and it is used for receiving or leaning support member in the process that above-mentioned locking member is arranged on the syringe.For example, positioner can comprise a base or annular lip, and it can link to each other with a contraction section that is formed on sheath one end.Perhaps, positioner can comprise one group of bearing, they around the jacket inner wall homogeneous phase every, locking member can lean on these bearings.
Locking member preferably comprises a perforate or hole, to pass the part of syringe, as tube or nozzle.For example, locking member can be a packing ring, and packing ring can be made and comprised an installing hole that is used for fanging noz(zle) by the material of elastically deformable.Perhaps, packing ring can be an open washer so that packing ring can shrink and expand so that can make sheath by in it with any contraction section and expand in the discontinuous segment.
Preferred construction is that after packing ring was installed on the nozzle, the major part of nozzle was to expose with freely, with the hub of interlock hypodermic needle.
In a replaceability embodiment, locking member can comprise a body, and it has an outside horizontal expansion part that is used for interlock sheath discontinuous segment, as the annular lip of a directed outside, also has a hole that is used to receive syringe nozzle.
Body can comprise clamp device, is fastened on the locking member with the hub with hypodermic needle.In one embodiment, clamp device can optionally releasably be installed in hypodermic needle on the locking member.Yet, in other embodiments, clamp device interlock hypodermic needle in some way, this mode needs sizable power hypodermic needle could be separated from locking member.For example, clamp device can comprise a groove, and it is used to receive the pin hub, and an attachment device, and it links to each other with above-mentioned groove, to keep the pin hub attached in the groove.Attachment device can comprise one group and point to inboard projection, and as one group of barb, flange or threaded portion, the flange or the marginal portion of hub can functionally be limited in the attachment device back.
In certain embodiments, locking member can comprise a coupling part, and it is used for fluid connection pin hub or helps to make syringe nozzle fluid connection pin hub.For example, the coupling part can by above-mentioned groove around, and can rub and be placed in the pin hub.The coupling part preferably is communicated with the hole that syringe nozzle is housed.
In one embodiment, clamping device can constitute one with locking member or link to each other, and an adjacent part on can the interlock syringe, as tube or nozzle.For example, clamping device can comprise and the inner one or more barb-like projection that links to each other of perforate or hole.
In another embodiment, clamping device can comprise a part of locking member, and this part is used for a threaded portion on the screw-threaded engagement syringe.
In another embodiment, clamping device can comprise a part of locking member, and this part is used to embed between the opposed part on the syringe.
Yet, be further appreciated that in other embodiments clamping device can comprise the various combining forms of said structure.For example, the part that being used on the locking member embeds between the opposed part of syringe can also comprise one or more barbs, with a surface on the interlock syringe.
Perhaps, clamping device can comprise a clamping packing ring, this packing ring can, for example, be installed on the nozzle, and packing ring comprises a perforate, perforate has one or morely points to inboard barb or analog so that when nozzle passes above-mentioned perforate the interlock nozzle.
Preferred construction is, is used for moving or throws off clamping device so that locking member separates required power greater than sheath is applied to power on the locking member from sheath when mobile between off position and operating position with syringe.
In yet another aspect, the present invention relates to a kind of needle stick protection apparatus that is used for type noted earlier and be connected to method on the syringe nozzle, it comprises:
A needle stick protection apparatus that assembles is provided, and
Syringe cylinder is inserted in the sheath, so that locking member is placed on the syringe and the interlock by syringe and clamping device is limited on the syringe.
In yet another aspect, the present invention relates to a kind of needle stick protection apparatus that uses type noted earlier to avoid the method for shank injury, needle stick protection apparatus is installed on the syringe, and injector operations is connecting a hypodermic needle, and said method comprises:
By sheath with respect to the moving and the tip of shielding needle of hypodermic needle, so that pin is surrounded by sheath and be maintained at an operation shield position by position of locking member and the interlock between the discontinuous segment in the sheath.
Be appreciated that user can shield hypodermic needle by sheath is moved to pin.
Perhaps, in order to shield hypodermic needle, user can determine to remain in the hands sheath is static, draw back syringe simultaneously and with pin attached in the sheath.
Yet preferred what adopt is that after the tip of pin was thrust in people's the skin, sheath was shifted to pin, so that the sheath end is leaning people's skin.Afterwards, when keeping sheath leaning people's skin, pin is drawn back backward.Consequently, the tip of pin can not exposed, thereby has avoided because of the injured probability of accidental contact tip.
In yet another aspect, the present invention relates to a kind of locking member that can be installed on the syringe, above-mentioned locking member comprises:
The sidepiece of a directed outside, it extends beyond syringe cylinder when locking member is installed on the syringe;
Erecting device, it is used for locking member is installed to syringe;
Clamping device, it links to each other with locking member, separates with syringe to prevent locking member, and
Clamp device, it is used for a hub in the hypodermic needle is fastened on locking member, it is characterized in that, and the pin hub can be communicated with the nozzle of syringe after being fastened on the locking member.
Preferred construction is, erecting device comprises a through hole, and it is used to receive a part of syringe, as tube or nozzle.
Clamping device can comprise a female thread portion in the hole, with a complementary threads part on the engagement syringe, for example threaded nozzle or thread barrel.Perhaps, clamping device can comprise the one or more barbs that link to each other with the hole, they in use with the interlock syringe the tube or nozzle.
Clamp device can comprise a groove, and it is used to receive the pin hub.Groove can comprise a female thread portion, and it is used for a marginal portion on the screw-threaded engagement pin hub.Perhaps, groove can comprise one or more projections, and they stretch in the groove and can be substituted by hub when the hypodermic needle hub is arranged in the above-mentioned groove and be positioned at above-mentioned projection back.Yet, preferably make projection can resist people and attempt hub is taken off from groove.In other embodiments, groove can comprise one or more projections, and they stretch in the groove and a marginal portion of hub can be limited in their back.Groove can also comprise guide block and block, to help the operability location of marginal portion in the flange back.
In certain embodiments, locking member can also comprise connecting device, and it is used for nozzle and pin hub fluid connection.For example, connecting device can comprise a coupling part, its by above-mentioned groove around and be used for friction and be positioned the pin hub.The coupling part preferably is communicated with the hole that syringe nozzle is housed.
Locking member preferably uses with the sheath of the above-mentioned type, for example, the sheath that is holding locking member can be provided, so that be installed on the syringe of following type, this syringe comprises a circular cylindrical tubular body or tube, tube has one and is formed on the end wall and the narrow openings that is communicated with an external nozzle liquid, optionally hypodermic needle of operability connection on the nozzle.
In yet another aspect, the present invention relates to a kind of needle stick protection apparatus, it can use with the syringe of following type, this syringe comprises: a tubular body, it has a narrow outlet that links to each other with the one end, outlet is communicated with a nozzle liquid, is connecting on the nozzle or can optionally connect a hypodermic needle; A finger bearing, it links to each other with the other end of body; And a piston, above-mentioned needle stick protection apparatus comprises:
A tubular sheath, its can be installed on the body of syringe and can make between off position that the subcutaneous injection needle tip exposes and the operating position at one mobile so that the tip of hypodermic needle by the free end of sheath around, and
The finger engagement device, it links to each other with above-mentioned sheath, it is characterized in that, when body is supported on two of user when leaning between the finger of pointing bearing, can utilize the thumb on user the same hand to exert pressure, thereby realize above-mentioned sheath moving between off position and operating position to the finger engagement device.
The finger engagement device can be placed on the part of sheath or near, after sheath was installed on the syringe, this part was adjacent to the finger bearing.
In one embodiment, the finger engagement device can comprise a rough surface on the sheath simply, as knurled surface, and a perhaps part on the sheath, this part comprises one or more irregular surfaces, as a kind of processing graphic pattern or one group of rib.
In a replaceability embodiment, the finger engagement device can comprise a pit that is formed on jacket wall portion, and pit is used to receive a position of user thumb.Therefore, the shape of pit can with the shape complementarity of user thumb.
In another embodiment, sheath can comprise a flange or baffle plate, and it stretches out and may stretch to the finger bearing of syringe from sheath.Sheath can also comprise positioner or guider, and it makes user can locate the finger engagement device when being installed to sheath on the syringe, so that the latter rests in a side of finger bearing.For example, positioner can comprise a bearing that is positioned on the sheath, to lean with respect to the correct localized finger bearing of sheath.
In yet another aspect, the present invention relates to a kind of use method of needle stick protection apparatus to avoid shank to injure of type as previously mentioned, needle stick protection apparatus is installed on the syringe, this syringe comprises: a tubular body, it has a narrow outlet that links to each other with the one end, outlet is communicated with a nozzle liquid, is connecting on the nozzle or can optionally connect a hypodermic needle; A finger bearing, it links to each other with the other end of body; And a piston, said method comprises:
Syringe is supported between two fingers of a hands of user, so that described finger is leaning the finger bearing;
Thumb on user the same hand is placed on the engagement device, and
Move sheath with respect to syringe so that the tip of hypodermic needle by the free end of sheath around, above-mentioned move to exert pressure to engagement device and finger bearing respectively by thumb and above-mentioned finger realize.
In order more to be expressly understood the present invention and it dropped into practical application that below with reference to each accompanying drawing, they have shown a preferred embodiment of the present invention and have comprised:
Fig. 1 is the side view of a standard syringe;
Fig. 2 is the side view of a standard hypodermic needle;
Fig. 2 a is the schematic plan of the hub of hypodermic needle shown in Figure 2;
Fig. 3 is the side view of syringe shown in Figure 1, wherein also demonstrates the hypodermic needle shown in Figure 2 that is installed on the said syringe;
Fig. 4 is the side view of a kind of sheath constructed according to the invention;
Fig. 5 is the end-view of sheath shown in Figure 4;
Fig. 6 is the opposite side end-view of sheath shown in Figure 4;
Fig. 6 a is the axonometric chart of an end of sheath shown in Figure 4;
Fig. 7 is the side cross-sectional view of sheath shown in Figure 4;
Fig. 8 is the vertical view of a kind of locking member constructed according to the invention;
Fig. 9 is the side cross-sectional view of locking member shown in Figure 8;
Figure 10 is the side cross-sectional view of needle stick protection apparatus shown in Figure 4;
Figure 11 is the side cross-sectional view of needle stick protection apparatus shown in Figure 4 when being installed on the sheath shown in Figure 3, and wherein above-mentioned protector is positioned at its off position;
Figure 12 is the side cross-sectional view of needle stick protection apparatus shown in Figure 4 when being installed on the sheath shown in Figure 3, and wherein above-mentioned protector is positioned at its operation shield position;
Figure 13 is the above-mentioned protector schematic side elevation before needle stick protection apparatus shown in Figure 4 is installed on the syringe;
Figure 14 a is the schematic side elevation of needle stick protection apparatus shown in Figure 4 when being installed on the syringe;
Figure 14 b is the schematic end of needle stick protection apparatus shown in Figure 4 when being installed on the syringe;
Figure 15 is the schematic side elevation of needle stick protection apparatus shown in Figure 4 when being installed on the syringe, and wherein syringe is not installed hypodermic needle as yet;
Figure 16 is the schematic side elevation of needle stick protection apparatus shown in Figure 4 when being installed on the syringe, and wherein hypodermic needle installs;
Figure 17 is the schematic side elevation of needle stick protection apparatus shown in Figure 4 when being installed on the syringe, and wherein hypodermic needle installs and medicated cap is removed;
Figure 18 is the schematic side elevation of needle stick protection apparatus shown in Figure 4 when being installed on the syringe, and wherein hypodermic needle installs;
Figure 19 is the schematic side elevation of needle stick protection apparatus shown in Figure 4 when being installed on the syringe, and wherein hypodermic needle installs and sheath is positioned at the operation shield position;
Figure 20 and 21 is respectively the schematic side elevation of needle stick protection apparatus shown in Figure 4 when being installed on the syringe, and wherein hypodermic needle installs and syringe loads stand-by;
Figure 22 is the schematic side elevation of needle stick protection apparatus shown in Figure 4 when being installed on the syringe, and wherein hypodermic needle installs and contents in the syringe have been provided;
Figure 23 and 24 is respectively the schematic side elevation of needle stick protection apparatus shown in Figure 4 when being installed on the syringe, and wherein hypodermic needle installs and sheath is shifted to operating position (Figure 24) from off position (Figure 23);
Figure 25 be being operated property of locking member the schematic side elevation when being limited in the discontinuous segment of sheath;
Figure 26 is that syringe separates with needle stick protection apparatus shown in Figure 4 and the schematic side elevation of hypodermic needle when being limited in the above-mentioned protector;
Figure 27 is the vertical view of a kind of replaceability locking member constructed according to the invention;
Figure 28 is the side cross-sectional view of locking member shown in Figure 27;
Figure 29 is the side view of another kind of syringe;
Figure 30 is the amplification side cross-sectional view of the nozzle of syringe shown in Figure 29;
Figure 31 is a kind of side view of standard hypodermic needle;
Figure 32 is the side cross-sectional view of a kind of locking member constructed according to the invention;
Figure 33 is the vertical view of locking member shown in Figure 32;
Figure 34 be shown in the side cross-sectional view of locking member when being installed on the end of syringe;
Figure 35 is the side cross-sectional view of a kind of sheath constructed according to the invention;
Figure 36 is the end-view of sheath shown in Figure 35;
Figure 37 is the opposite side end-view of sheath shown in Figure 35;
Figure 38 is the side cross-sectional view of sheath shown in Figure 35;
Figure 39 is the side cross-sectional view of a kind of needle stick protection apparatus constructed according to the invention;
Figure 40 is the side cross-sectional view of needle stick protection apparatus shown in Figure 39 when being installed on the syringe shown in Figure 29, and wherein above-mentioned protector is positioned at its off position, and
Figure 41 is the side cross-sectional view of needle stick protection apparatus shown in Figure 39 when being installed on the syringe shown in Figure 29, and wherein above-mentioned protector is positioned at its operation shield position.
Fig. 1 has shown a standard syringe 10 of being made by transparent plastic.Syringe 10 comprises a columnar tubular body or tube 11, and this has a narrow outlet that links to each other with one end 12, and this outlet and external nozzle 13 fluid connections can optionally connect a hypodermic needle 14 on the nozzle.The outer surface of nozzle has tapering, and this tapering is commonly referred to as road E Shi tapering (Luer taper).
The other end of tube 11 comprises a finger bearing 9, and it is made of a pair of opposite outside flange 8.
Syringe 10 also comprises a piston 15, and it has one and slidably is placed in the head 16 of tube in 11, and piston 15 be used for oppressing be stored in tube 11 liquid by nozzle 13.
Hypodermic needle 14 shown in Fig. 2 comprises the hub 17 of the conical shaped of a hollow, and it is around a bottom or a base portion 18 with the end of tubular needle 19 at tip 20.Hub 17 comprises the groove 21 of a conical shaped usually, and it is used for receiving and frictional constraint nozzle 13, shown in Fig. 3 and 9.Hub 17 also comprises a substantially elliptical flange 5, and it has relative end 6.
Syringe 10 and hypodermic needle 14 are loaded in the packing separately usually, and the tip 20 of pin 14 is being protected by a unshowned detachable shell or medicated cap usually.
Fig. 4 to 7 has shown the sheath 30 of a general cylindrical shape, and it can be installed on the tube 11 of syringe 10.Sheath 30 is made as the high density poly propylene material preferably by a kind of transparent plastic of elastically deformable.
Sheath 30 comprises the endoporus 31 of a both ends open.Hole 31 comprises a main body or body part 44, and its internal diameter is slightly larger than the external diameter of the tube 11 of syringe 10.
Hole 31 comprises two pairs of parallel splines 32, and they are along most of length longitudinal extension of body part 44, and distance equates between the two pairs of splines.In addition, preferably make two splines 32 that constitute every pair of spline 32 closer to each other and be separated by, and occupied circle spacing of any a pair of spline in the two pairs of splines is more much smaller than the circle spacing between two pairs of splines.Consequently, wall portion 45 easy deformation of separating two splines 32.Also preferably make spacing distance between the spline 32 of diametrically contraposition be slightly larger than the external diameter of the tube 11 of syringe 10.
Spline 32 is disconnected by a discontinuous segment 33 along their length direction respectively, and these discontinuous segments that are in alignment with each other have formed an internal annular groove 33a.The discontinuous segment 33 of each spline 32 also is communicated with a perforate 34 that is formed on the sheath sidewall 35 respectively.
Described perforate 34 by the circumferential rib 36 of two outside horizontal expansions and 37 around.With each rib 36 and 37 respectively opposed be an inner pit 38 and 39, they are respectively formed in the spline 32.
Sheath 30 also comprises a cylindrical ends 40, and its internal diameter is less than the internal diameter of opposite ends 41 and the external diameter of tube 11.End 40 comprise four inner homogeneous phases every rib 42, to help to improve the intensity of above-mentioned end, also comprise eight adjacent ribs 43, they are along the sub-fraction longitudinal extension of sheath body part 44.
Sheath 30 also comprises finger engagement device 100, and it comprises an outward extending flange 101, shown in Fig. 6 a.The back edge 102 of flange 101 forms a bearing, to lean the finger bearing 9 of syringe.
Sheath 30 is preferably by injection-molded technology manufacturing, and mould preferably comprises two, and every forms a shape and the complementary die cavity of sheath 30 profiles respectively.Mould also comprises the core of a general cylindrical shape, and it is placed between the die cavity that piece constituted after the assembling, and shape complementations in the shape of core and the sheath 30.Each perforate 34 and the discontinuous segment 33 that is connected are shaped out by a corresponding projection respectively, each projection respectively with described die cavity in the given shape that links to each other and have with the interlock core.One with described die cavity in a runner that is connected be used for to the enough molten plastic of mould inside supply forming sheath, and behind plastics solidification, formed sheath 30 will strip down from core.Pit 38 and 39 formation are that the rate of cooling of rib 36 and 37 is with the slow result that compares of adjacent wall portion.
Fig. 8 and 9 has shown a locking member that is made of plastics 50.Locking member 50 comprises a general cylindrical shape body part 51 and an outer annular flange 57, and the external diameter of flange 57 is slightly larger than the spacing distance between the spline 32 of tube 11 external diameter and diametrically contraposition.Also preferably make the locking member height of showing arrow 58 expressions greatly less than the spacing distance between the spline 32 of diametrically contraposition.
Locking member 50 also comprises an endoporus 52 that is positioned at the center, and endoporus determined by a continuous wall 53, and this wall has an identical tapering of tapering with the nozzle 13 of syringe 10.Wall 53 comprises one group and points to inboard barb 54.Hole 52 is communicated with a groove 55 that is positioned at the center, and groove 55 comprises one group of projection 56 that points to inboard and below.
It is contemplated that sheath 30 and locking member 50 will constitute a needle stick protection apparatus 60, offer user with the assembling dormant state and use, as shown in figure 10.This protector can optionally be installed in before existing syringe is packed hypodermic needle 14 on the existing syringe 10.Locking member 50 preferably is placed in the hole 31 of body part 41 of sheath 30, and has an instrument to be used for locking member is pushed until adjoining constricted end portion 40, as shown in figure 10 along sheath.Preferably make annular lip 57 lean the end 61 of rib 43.
In use, by earlier with nozzle again with in tube 11 patchholes 31, needle stick protection apparatus 60 can be installed in the tube 11 of syringe 10, as shown in figure 13.Nozzle 13 preferably is pushed in the hole 52 of locking member 50, so that tapered wall 53 and nozzle external wall friction constrain in together, shown in Figure 14 a.Locking member 50 also is limited on the nozzle 13 by the interlock between barb 54 and the nozzle outer wall.
Preferably make finger bearing 9 adjoin finger flange 101, and the lateral edge portions 7 of finger on the bearing leaning with bearing 102, shown in Figure 14 a and 14b.
17 of the hubs of hypodermic needle 14 can promote projection 56 and the latter is shifted temporarily, and can hub be fastened on the nozzle by the frictional constraint between the tapered sidewalls of nozzle outer wall and cone-shaped groove 21, as shown in figure 15.The medicated cap 90 that is covered with pin can take off, as shown in figure 17.
The assembly of syringe of Xing Chenging and pin is very similar to the structure of assembly 70 shown in Figure 11 and 17 like this.
Should be pointed out that sheath 30 is positioned at its off position, and the major part of pin 19, comprise tip 20, all expose.
By immersing tip 20 in the liquid and twitching piston 15 backward, can be in the tube with liquid suction syringe, as shown in figure 18 by hypodermic needle 19.
If pin be not will be immediately to people's injection, but with fluid preservation in tube 11, sheath 30 can move between its extreme off position and operating position, thus the tip that makes pin 20 by end 40 around, as shown in figure 19.Yet when needed, sheath 30 can retreat or return its extreme off position once more, as shown in figure 20, like this user can be in needs with the contents in the syringe to patient infusion.
By people's skin being thrust at the tip 20 of pin 14 and utilizing the thumb 120 of user to promote the free end 6 of pistons 15, two that simultaneously syringe 10 are supported on user are leaning between the finger 121 of pointing bearing 8, can will be contained in the liquid infusion of tube in 11 in patient's blood flow.
After having implemented injection, sheath 30 can slide along tube 11, so that the end 40 of sheath is leaning people's skin.Afterwards, keep end 40 to abut against people's skin, pin 19 can also be housed in the sheath 30 subsequently from people's subcutaneous extraction.
Because the frictional constraint between annular lip 57 and the spline 32, therefore sheath 30 will cause sheath some local deformations to occur with respect to moving of tube 11, but will be appreciated that above-mentioned some resistance that is run into that moves will be overcome by the flexibility of wall portion 45 at least in part.
When annular lip 57 with after pit 38 is aimed at, flange 57 is with interlock pit 38, and above-mentioned interlock will be sent the loud noise that can hear.Because pit 38 is very shallow, so flange 57 and pit 38 can easily throw off, and like this, user can stretch the tip 20 of pin and exceed the restriction of sheath when needed, thereby guarantee that assembly can use with injection as required for the second time or extracts liquid.As example, when the liquid of planning to utilize syringe will be contained in wherein in a medical procedure is expelled in the human body with low dose in different phase, but wish that above-mentioned this point is not important when tip 20 make-up shieldings of pin are in end 40 time spent at assembly 70.
Yet, if do not wish to reuse syringe 10, then by annular lip 57 is aimed at discontinuous segment 33, so that the stops limit that flange 57 is constituted by the opposed edge 75 of each spline 32 is in discontinuous segment, thereby sheath 30 is placed on its operation shield position, as shown in figure 12.The interlock of annular lip 57 in discontinuous segment can be sent second loud noise that can hear.See that by perforate 34 annular lip 57 also can provide a kind of visual pathway, whether be limited in the discontinuous segment 33 to judge flange 57.
Relatively moving between sheath 30 and the syringe 10 preferably utilizes a hands to realize, being about to syringe 10 is supported between two fingers 121, leaning finger bearing 9 so that point 121, simultaneously thumb 120 is abutted against finger flange 101, exert pressure to finger flange 101 and finger bearing 9 by thumb 120 and finger 121 respectively again, shown in Figure 23 and 24.
This just makes that implementing the injector can utilize the another hands keeping the skin of patient around pin 14 thrusts a little.
Can believe, the constricted end portion 40 of sheath is enough narrow, thereby can prevent the shank injury, this injury mainly is that the finger insertion hole 31 owing to the people causes, yet, except said process, user can also determine with hypodermic needle with medicated cap be inverted and, be used for further locking the opening of end 40 with enlarged base medicated cap with in the above-mentioned medicated cap patchhole 31.
As the consequence of a voluntary action,, be appreciated that then locking member 50 will be limited in the sheath 30, as shown in figure 26 with hypodermic needle 14 if locking member 50 has separated with syringe 10.Can also believe that barb 54 will cause enough infringements to the outer surface of nozzle 30, so that syringe 10 can not reuse.
Figure 27 and 28 has shown a replaceability locking member 200 of locking member 50 shown in Fig. 8 and 9.The same with locking member 50, locking member 200 also is made of plastics.Locking member 200 comprises a general cylindrical shape body part 201 and an outer annular flange 202, and the external diameter of flange 57 is slightly larger than the spacing distance between the spline 32 of tube 11 external diameter and diametrically contraposition.Also preferably make the locking member height of showing arrow 203 expressions greatly less than the spacing distance between the spline 32 of diametrically contraposition.
Locking member 200 also comprises an endoporus 204 that is positioned at the center, and endoporus is determined a continuous wall 205, and this wall has an identical tapering of tapering with the nozzle 13 of syringe 10.In use, wall 205 is used for the outer surface of frictional constraint nozzle 13.
Hole 204 is communicated with a groove 206 that is positioned at the center, and this groove is determined by a continuous side walls 207.Groove 206 comprise one downward and intilted last week edge 208 and 209, two inclined-planes, inclined-plane of two diametrically contrapositions all from above-mentioned last week the edge 208 inwardly and downwards and stretch out from wall 207.Each inclined-plane 209 comprises a bottom guide surface 210 and bottom or trailing edge part 211 respectively, and it adjoins a horizontally disposed flange 212 settles, and this flange has a lower support surface 213.
Groove 206 also comprises two vertically-oriented bearings 214 that extend from trailing edge part 211 downwards.Groove 206 also comprises the inclined-plane 215 of two diametrically contrapositions, and they inwardly and upwards and from wall 207 stretch out from the base plate 220 of groove.Each inclined-plane 215 comprises a top guide surface 216 respectively; The leading part 218 on a top leading part 217 and an adjacent inclined-plane 209 is separated by about 90 °, and bottom traction element 219 almost is positioned at leading part 218 belows on another inclined-plane 209.
200 two of locking members radially be separated by and be positioned at the outside vertically-oriented bearing 250, they are protruding from sidewall 201.
Locking member 200 allows user that hypodermic needle 14 releasably is directly installed on it in use.This is achieved in that promptly that at first the flange 5 with hub 17 is placed in the groove 206, so that each end 6 lays respectively between the opposed inclined-plane 209 and rests on the leading part 217 on a corresponding inclined-plane 215.This may also need the each several part that is slightly grasping on the sidewall 207 of end 6 is pushed open slightly.Next, about 90 ° of hub 17 rotation so that end 6 moves past guide surface 210 and 216, leans on corresponding bearing 214 until the end 4 of hub 17; Flange 212 is superimposed upon on the end 6, and the surface 213 that is leaning end 6 helps to keep the nozzle 13 operability interlocks of hub 17 and syringe 10, as previously mentioned.In the process that hypodermic needle is locked on the syringe, can be by preventing that against constraint locking member 200 is with respect to 10 rotations of sheath 30 and/or syringe between bearing 250 and the respective rib 43.
, can easily hypodermic needle 14 be taken off from locking member 200 in the opposite direction with respect to the hub 17 of locking member 200 rotation pins 14 by the side when being installed on the above-mentioned locking member 200 with pin 14.
Hypodermic needle 14 can be installed together with locking member 200 or separate, and the protective cap that is had usually on the pin is again simultaneously hiding.
Be appreciated that when the contents in sealing that utilizes the bigger hypodermic needle of external diameter 14 breakthrough medicine bottles and the extraction medicine bottle, use locking member 200 useful especially.Afterwards, as needs, it is less to thrust " tiny " hypodermic needle 14 of patient skin that " greatly " hypodermic needle 14 can be replaced by external diameter.
Figure 29 has shown the another kind of standard syringe of being made by transparent plastic 310.Syringe 310 comprises a columnar tubular body or tube 311, and this has a narrow outlet that links to each other with one end 312, this outlet and Frusto-conical external nozzle 313 fluid connections.The outer surface of nozzle 313 has tapering, and this tapering is commonly referred to as road E Shi tapering.
Nozzle 313 by a cylindrical wall 314 around, this wall comprises a female thread portion 315.
Syringe 310 also comprises a piston 316 that has head 317, and this head seal is placed in the tube 311, and piston 316 is used for oppressing and is stored in tube 311 liquid by nozzle 313.
Shown a hypodermic needle 320 among Figure 31, it can optionally be installed on the nozzle 313 when needed.Hypodermic needle 320 comprises the hub 321 of the conical shaped of a hollow, and it is around a bottom or a base portion 322 with the end of tubular needle 323 at tip 324.
Hub 321 comprises the groove 325 of a conical shaped usually, and it is used for frictional constraint nozzle 313, also comprises an annular lip 326, and it is used for the female thread portion 315 of screw-threaded engagement cylindrical wall 314.
Syringe 310 and hypodermic needle 320 are loaded in the packing separately usually, and the tip 324 of pin 320 is being protected by a unshowned detachable shell or medicated cap usually.
Up to now, wish for own or other people injecting fluid need per capita hypodermic needle 320 is fastened on the nozzle 313 of syringe 310.
Figure 35 to 38 has shown the sheath 330 of a general cylindrical shape, and it can be installed on the tube 311 of syringe 310.Sheath 330 is made as the high density poly propylene material preferably by a kind of transparent plastic of elastically deformable.
Sheath 30 comprises the endoporus 331 of a both ends open.Hole 331 comprises a main body or body part 344, and its internal diameter is slightly larger than the external diameter of the tube 311 of syringe 310.
Hole 331 comprises two pairs of parallel splines 332, and they are along most of length longitudinal extension of body part 344, and distance equates between the two pairs of splines.In addition, preferably make two splines 332 that constitute every pair of spline 332 closer to each other and be separated by, and occupied circle spacing of any a pair of spline in the two pairs of splines is more much smaller than the circle spacing between two pairs of splines.Consequently, wall portion 345 easy deformation of separating two splines 332.Also preferably make spacing distance between the spline 332 of diametrically contraposition be slightly larger than the external diameter of the tube 311 of syringe 310.
Spline 332 is disconnected by a discontinuous segment 333 along their length direction respectively, and these discontinuous segments that are in alignment with each other have formed an internal annular groove 333a.The discontinuous segment 333 of each spline 332 also is communicated with an alignment apertures 334 that is formed on the sheath sidewall 335 respectively.
Described perforate 334 by the circumferential rib 336 of two outside horizontal expansions and 337 around.With each rib 336 and 337 respectively opposed be an inner pit 338 and 339, they are respectively formed in the spline 332.
Sheath 330 also comprises a cylindrical ends 340, and its internal diameter is less than the internal diameter of opposite ends 341 and the external diameter of tube 311.End 340 comprise four inner homogeneous phases every rib 342, to help to improve the intensity of above-mentioned end, also comprise eight adjacent ribs 343, they are along a fraction longitudinal extension of sheath body part 344.
Sheath 330 is preferably by injection-molded technology manufacturing, and mould preferably comprises two, and every forms a shape and the complementary die cavity of sheath 330 profiles respectively.Mould also comprises the core of a general cylindrical shape, and it is placed between the die cavity that piece constituted after the assembling, and shape complementations in the shape of core and the sheath 330.Each perforate 334 and the discontinuous segment 333 that is connected are shaped out by a corresponding projection respectively, each projection respectively with described die cavity in the given shape that links to each other and have with the interlock core.One with described die cavity in a runner that is connected be used for to the enough molten plastic of mould inside supply constituting sheath, and behind plastics solidification, formed sheath 330 will strip down from core.Can believe that pit 338 and 339 formation are that the rate of cooling of rib 336 and 337 is with the slow result that compares of adjacent wall portion.
Figure 32 and 33 has shown a locking member that is made of plastics 350.Locking member 350 comprises a main body 351, has the through hole 352 of an axial location in the main body.
Locking member 350 also comprises the coupling part 353 of an axial location, and the coupling part is conical butt and has a successive tapered sidewalls 354, (road E Shi tapering).The cylindrical wall 355 that coupling part 353 is had a female thread portion 356 around.
Locking member 350 also comprises the annular edge of part 357 of a directed outside, and it has the lateral margin 358 that dangles, and this lateral margin is towards clamping device 359 resilient bias, and clamping device is used for the nozzle 313 and the peripheral cylindrical wall 314 of interlock syringe 310.Clamping device 359 comprises the frusto-conical portion 360 of a directed downwards and axial location, and the latter has a continuous lateral wall 361 of taper and the continuous medial wall 362 of taper, (road E Shi tapering).
Locking member 350 also comprises eight grooves 363 along the circumference equidistant placement, and they are formed in the upper wall of annular edge of part 357.Each groove 363 is respectively applied for the end 364 that receives a respective rib 343.
It is contemplated that; sheath 330 and locking member 350 will constitute a needle stick protection apparatus 370; offer user with the assembling dormant state and use, this protector can optionally be installed in before existing syringe is packed hypodermic needle 320 on the existing syringe 310, as shown in figure 39.Locking member 350 preferably is inserted in the hole 331, so that the serrated end of sheath 330 is pointed in coupling part 353.The elasticity of marginal portion 357 makes locking member to be pushed by the length direction of a suitable instrument along sheath, therefore so that the end 364 with each rib 343 is placed in respectively in the corresponding grooves 363 subsequently, and provide certain support for the locking member 350 that is placed in the sheath 330.Should also be noted that a little endless belt friction on the marginal portion 357 is leaning spline 332, and therefore help locking member 350 is limited in the sheath 330.
In use, by earlier with nozzle again with in tube 311 patchholes 331, needle stick protection apparatus 370 can be installed in the tube 331 of syringe 310.Nozzle 313 preferably is pushed in the hole 352 of locking member 350, so that the conical inboard wall 362 of the conical surface of nozzle 313 (road E Shi tapering) frictional constraint tapered segment 360, this inwall 362 is embedded between the conical surface of the threaded portion 315 of cylindrical wall 314 and nozzle 313.
The top 366 of cylindrical wall 314 also frictional constraint the lateral margin 358 of marginal portion 357, and this lateral margin outwards moves owing to contact top 366, as shown in figure 34.
Be further appreciated that in the nozzle 313 the hole therefore and with the mode of sealing and a part of fluid connection in hole 352, this part extends through locking member coupling part 353.
Annular lip 326 on the hub 321 of hypodermic needle 320 can screw-threaded engagement the threaded portion 356 of locking member 350, so that hub 321 is because of being limited with coupling part 353 liquid seal interlocks, shown in Figure 40 and 41.
The assembly of syringe of Xing Chenging and pin is very similar to the structure of assembly 390 shown in Figure 40 like this, and the inner chamber of syringe can charge into and a kind ofly will be expelled to the intravital liquid of patient in normal way.Should be pointed out that sheath 330 is positioned at its off position, and the major part of pin 323, comprise tip 324, all expose.
The tip 324 of pin 323 can be inserted below the patient skin, and by piston 316 roughly along pointing to moving of nozzle 313 directions, the liquid that is contained in the inner chamber can emit from pin.Perhaps, roughly along the moving of faces away from nozzle 313 directions, assembly 390 can be extracted liquid out from human body by piston 316.
After having finished injection or having extracted liquid, sheath 330 can slide along tube 311, so that the end 340 of sheath is leaning people's skin.Afterwards, tube 340 is retracted from the end, and keep sheath 330 static, preferably utilize rib 336 and 337, the tip 320 of pin 319 can be extracted out below people's skin as grasping the position with the another hands with a hands.
Because annular edge of part 357 with spline 332 frictional constraints, therefore sheath 330 will cause sheath some local deformations to occur with respect to moving of tube 311, but will be appreciated that above-mentioned some resistance that is run into that moves will be overcome by the flexibility of wall portion 345 at least in part.
When annular lip 357 with after inner pit 338 is aimed at, flange 57 is with interlock pit 338, and above-mentioned interlock will be sent the loud noise that can hear.Because pit is very shallow, so flange 357 and pit 338 can easily throw off, and like this, user can stretch the tip 324 of pin exceed the restriction of sheath, thereby guarantee that assembly can use with injection for the second time or extracts liquid.As example, when the liquid of planning to utilize syringe will be contained in wherein in a medical procedure is expelled in the human body with low dose in different phase, but wish that above-mentioned this point is not important when tip 324 make-up shieldings of pin are in end 340 time spent at assembly 390.
Yet, if do not wish to reuse syringe 310, then by annular lip 357 is aimed at discontinuous segment 333, so that the stops limit that flange 357 is constituted by the opposed edge 375 of each spline 332 is in discontinuous segment, thereby sheath 330 is placed on its operation shield position, as shown in figure 41.The interlock of annular lip 357 in discontinuous segment can be sent second loud noise that can hear.In addition, see that by perforate 334 annular lip 357 also can provide a kind of visual pathway, whether be limited in the discontinuous segment 333 to judge flange 357.
Can believe that the constricted end portion 340 of sheath is enough narrow, thereby can prevent that shank injury, this injury from mainly being that finger insertion hole 331 owing to the people causes.Yet, except said process, user can also determine with hypodermic needle with medicated cap be inverted and, be used for further locking the opening of end 340 with enlarged base medicated cap with in the above-mentioned medicated cap patchhole 331.
As the consequence of a voluntary action,, be appreciated that then locking member 350 will be limited in the sheath 330 with hypodermic needle 320 if locking member 350 has separated with syringe 310.
Certainly, can recognize, though the front has provided illustrative examples of the present invention, for the person of ordinary skill of the art, obviously all these and other remodeling and modification all are included in the appended claims book in the determined broad range of the present invention and field.

Claims (23)

1. needle stick protection apparatus, it comprises:
A sheath, it has an interior bone that can receive syringe cylinder, and above-mentioned hole comprises a spline or rib, has formed a discontinuous segment in the spline, and in order to receive a position of a locking member, locking member links to each other with syringe and horizontal expansion exceeds tube.
2. needle stick protection apparatus, it comprises:
A sheath, it has an interior bone that can receive syringe cylinder, above-mentioned hole comprises the spline or the rib that extend along the partial-length at least in above-mentioned hole, and in above-mentioned spline, provide a discontinuous segment, in order to receive a position of a locking member, locking member links to each other with syringe and horizontal expansion exceeds tube, and above-mentioned discontinuous segment is aimed at a perforate in the sidewall that is formed on above-mentioned sheath.
3. needle stick protection apparatus as claimed in claim 2 is characterized in that, above-mentioned discontinuous segment is formed by a part in a moulding process, and this part is recalled by above-mentioned perforate.
4. as claim 2 or 3 described needle stick protection apparatus, it is characterized in that above-mentioned sheath comprises one group of spline of along the circumferential direction being separated by, all formed a discontinuous segment in they each, above-mentioned discontinuous segment is lateral alignment in above-mentioned sheath.
5. as the described needle stick protection apparatus of the arbitrary claim in front; it is characterized in that; above-mentioned one or above-mentioned a plurality of spline are respectively applied for the frictional constraint locking member, change shape by the selected part in the above-mentioned sheath, and locking member reduces at least in part with respect to the resistance that above-mentioned sheath slides.
6. needle stick protection apparatus as claimed in claim 4 is characterized in that, at least some in above-mentioned a plurality of splines are separated by an elastically deformable wall portion in the above-mentioned sheath.
7. as the described needle stick protection apparatus of the arbitrary claim in front, it is characterized in that above-mentioned sheath is made by a kind of plastics of elastically deformable.
8. method that is used to make following type sheath, this sheath has an interior bone that can receive syringe cylinder, above-mentioned hole comprises a spline that extends along the partial-length at least in above-mentioned hole, and spline comprises a discontinuous segment, discontinuous segment is used to receive a position of a locking member that links to each other with syringe, and said method comprises:
Two pieces are provided, and each piece has a stayed surface respectively, has formed a complementary die cavity of the profile with manufactured sheath in the stayed surface, and discontinuous segment is by forming from an outward extending projection of above-mentioned die cavity;
A main core is provided, the interior shape complementation of itself and manufactured sheath, above-mentioned main core has a groove, the shape complementarity of this groove and spline;
Two pieces are put together, so that two stayed surfaces are leaning mutually, and two die cavity cooperations to be forming a hole, and main core is supported in the above-mentioned hole, and a free end of projection is received and is engaged in the surface of groove of main core;
A kind of curable plastics are passed through a runnerless injection that is communicated with the hole in the hole;
Separate two pieces, and
Plastic sheath is peeled off from core.
9. method that is used to make following type sheath, this sheath has an interior bone that can receive syringe cylinder, above-mentioned hole comprises a spline that extends along the partial-length at least in above-mentioned hole, and spline comprises a discontinuous segment, discontinuous segment is used to receive a position that is installed in the locking member on the syringe, and said method comprises:
Two pieces are provided, and each piece has a stayed surface respectively, has formed a complementary die cavity of the profile with manufactured sheath in the stayed surface;
A main core is provided, the interior shape complementation of itself and manufactured sheath, above-mentioned main core has a groove, the shape complementarity of this groove and spline, and a pin is provided, it can optionally stretch in the above-mentioned groove, so that form discontinuous segment in spline;
Two pieces are put together, so that two stayed surfaces are leaning mutually, and two die cavity cooperations to be forming a hole, and main core is supported in the above-mentioned hole, and a pin part of having blocked groove;
A kind of curable plastics are passed through a runnerless injection that is communicated with the hole in the hole;
Separate two pieces;
Recall pin, and
Plastic sheath is peeled off from core.
10. needle stick protection apparatus; below it can be installed to after assembling on the syringe of type; this syringe comprises a tubular body or tube; tube has a cylinder side wall and one and is formed on the end wall and the narrow openings that is communicated with an external nozzle liquid; optionally hypodermic needle of operability connection on the nozzle, above-mentioned needle stick protection apparatus comprises:
A cover tubular sheath, it can be installed in the tube portion of syringe, thereby can between an off position and an operating position, move, at off position, the exposed tip of hypodermic needle can be thrust in people's the skin, and at operating position, above-mentioned sheath can prevent that the tip of hypodermic needle from touching people's skin, above-mentioned sheath has one and is positioned at the intermediary inner discontinuous segment of its opposite ends, and above-mentioned discontinuous segment is aimed at a perforate in the sidewall that is formed on above-mentioned sheath;
A locking member, it is placed in, and above-mentioned sheath is inner also can be moved with respect to above-mentioned sheath, have on the above-mentioned locking member and be used for locking member is installed in erecting device on the syringe, above-mentioned locking member has a marginal portion, it helps above-mentioned sheath is limited in an operating position when being arranged in above-mentioned discontinuous segment, above-mentioned edge be suitable for along substantial transverse stretch out from syringe exceed the cylinder side wall of syringe, and
Clamping device, it is placed in above-mentioned sheath inside, so that above-mentioned locking member is limited on the syringe.
11. needle stick protection apparatus as claimed in claim 10 is characterized in that, above-mentioned discontinuous segment is formed by a part in a moulding process, and this part is recalled by above-mentioned perforate.
12. as claim 10 or 11 described needle stick protection apparatus; it is characterized in that; above-mentioned sheath comprises the positioner that links to each other with the one end, and it is used for also providing support for support member at the above-mentioned support member of process reception that above-mentioned locking member is arranged on the syringe.
13. needle stick protection apparatus as claimed in claim 12 is characterized in that, above-mentioned positioner comprises one group of bearing, and the above-mentioned marginal portion of above-mentioned locking member can lean on these bearings.
14., it is characterized in that above-mentioned locking member comprises a perforate as the described needle stick protection apparatus of the arbitrary claim 10 to 13 in front, the nozzle of syringe extends through this perforate.
15. needle stick protection apparatus as claimed in claim 14 is characterized in that, above-mentioned locking member comprises clamp device, and it is used for the hub of hypodermic needle is fastened on above-mentioned locking member.
16. as the described needle stick protection apparatus of the arbitrary claim 10 to 15 in front, it is characterized in that above-mentioned locking member comprises clamping device, it is used for an adjacent part on the interlock syringe.
17. one kind is used for the needle stick protection apparatus that the arbitrary claim 10 to 16 in front is determined is connected to method on the syringe nozzle, it comprises:
A needle stick protection apparatus that assembles is provided, and
Syringe cylinder is inserted in the sheath, so that locking member is placed on the syringe and the interlock by syringe and clamping device is limited on the syringe.
18. the locking member that can be installed on the syringe, above-mentioned locking member comprises:
The sidepiece of a directed outside, it extends beyond syringe cylinder when locking member is installed on the syringe;
Erecting device, it is used for locking member is installed to syringe;
Clamping device, it links to each other with locking member, separates with syringe to prevent locking member, and
Clamp device, it is used for a hub in the hypodermic needle is fastened on locking member, it is characterized in that, and the pin hub can be communicated with the nozzle of syringe after being fastened on the locking member.
19. the needle stick protection apparatus of type described in the arbitrary claim 1 to 7 of use such as front or 10 to 17 is to avoid the method for shank injury; needle stick protection apparatus is installed on the syringe; injector operations is connecting a hypodermic needle, and said method comprises:
By sheath with respect to the moving and the tip of shielding needle of hypodermic needle, so that pin is surrounded by sheath and be maintained at an operation shield position by position of locking member and the interlock between the discontinuous segment in the sheath.
20. needle stick protection apparatus, it can use with the syringe of following type, this syringe comprises: a tubular body, it has a narrow outlet that links to each other with the one end, outlet is communicated with a nozzle liquid, is connecting on the nozzle or can optionally connect a hypodermic needle; A finger bearing, it links to each other with the other end of body; And a piston, above-mentioned needle stick protection apparatus comprises:
A tubular sheath, its can be installed on the body of syringe and can make between off position that the subcutaneous injection needle tip exposes and the operating position at one mobile so that the tip of hypodermic needle by the free end of sheath around, and
The finger engagement device, it links to each other with above-mentioned sheath, it is characterized in that, when body is supported on two of user when leaning between the finger of pointing bearing, can utilize the thumb on user the same hand to exert pressure, thereby realize above-mentioned sheath moving between off position and operating position to the finger engagement device.
21. the needle stick protection apparatus described in use such as the claim 20 is to avoid the method for shank injury, needle stick protection apparatus is installed on the syringe, this syringe comprises: a tubular body, it has a narrow outlet that links to each other with the one end, outlet is communicated with a nozzle liquid, is connecting on the nozzle or can optionally connect a hypodermic needle; A finger bearing, it links to each other with the other end of body; And a piston, said method comprises:
Syringe is supported between two fingers of a hands of user, so that described finger is leaning the finger bearing;
Thumb on user the same hand is placed on the engagement device, and
Move sheath with respect to syringe so that the tip of hypodermic needle by the free end of sheath around, above-mentioned move to exert pressure to engagement device and finger bearing respectively by thumb and above-mentioned finger realize.
22. basically as the needle stick protection apparatus of front by describing with reference to the accompanying drawings.
23. basically as the locking member of front by describing with reference to the accompanying drawings.
CN 99804713 1998-04-01 1999-04-01 Needle stick protection apparatus Pending CN1302214A (en)

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
AUPP7979 1997-07-12
AUPP2739A AUPP273998A0 (en) 1998-04-01 1998-04-01 A protection apparatus
AUPP2739 1998-04-01
AUPP5795 1998-09-09
AUPP5795A AUPP579598A0 (en) 1998-09-09 1998-09-09 Needlestick protection apparatus
AUPP6791A AUPP679198A0 (en) 1998-10-28 1998-10-28 Needlestick protection apparatus
AUPP6791 1998-10-28
AUPP7980 1998-12-31
AUPP7980A AUPP798098A0 (en) 1998-12-31 1998-12-31 Needle stick protection apparatus
AUPP7979A AUPP797998A0 (en) 1998-12-31 1998-12-31 Needle stick protection apparatus
AUPP8333A AUPP833399A0 (en) 1999-01-25 1999-01-25 Needle stick protection apparatus
AUPP8332A AUPP833299A0 (en) 1999-01-25 1999-01-25 Needle stick protection apparatus
AUPP8333 1999-01-25
AUPP8332 1999-01-25

Publications (1)

Publication Number Publication Date
CN1302214A true CN1302214A (en) 2001-07-04

Family

ID=27560728

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99804713 Pending CN1302214A (en) 1998-04-01 1999-04-01 Needle stick protection apparatus

Country Status (5)

Country Link
EP (1) EP1067977A4 (en)
JP (1) JP2002510534A (en)
CN (1) CN1302214A (en)
CA (1) CA2329780A1 (en)
WO (1) WO1999051289A1 (en)

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CN100418592C (en) * 2004-11-09 2008-09-17 陈昌慈 Syringe needle protecting structure

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Publication number Priority date Publication date Assignee Title
CN100418592C (en) * 2004-11-09 2008-09-17 陈昌慈 Syringe needle protecting structure

Also Published As

Publication number Publication date
EP1067977A1 (en) 2001-01-17
EP1067977A4 (en) 2001-10-31
WO1999051289A1 (en) 1999-10-14
JP2002510534A (en) 2002-04-09
CA2329780A1 (en) 1999-10-14

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