US20050165330A1 - Needle type safety connector - Google Patents
Needle type safety connector Download PDFInfo
- Publication number
- US20050165330A1 US20050165330A1 US11/035,779 US3577905A US2005165330A1 US 20050165330 A1 US20050165330 A1 US 20050165330A1 US 3577905 A US3577905 A US 3577905A US 2005165330 A1 US2005165330 A1 US 2005165330A1
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- US
- United States
- Prior art keywords
- needle
- cylinder
- support sleeve
- proximal
- needle support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150992—Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings, valves
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
- A61B5/150519—Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150572—Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/15058—Joining techniques used for protective means
- A61B5/150595—Joining techniques used for protective means by snap-lock (i.e. based on axial displacement)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150732—Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150221—Valves
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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
- A61M5/34—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
Definitions
- the present invention relates to safety connectors for connecting a sampling container to a fluid tube.
- the invention relates in particular to connectors of the above kind for taking blood samples in applications in the health field.
- a fluid tube When taking blood samples, in particular for blood donations, the blood must be systematically analyzed by taking a small sample of blood in a sampling container.
- a fluid tube must be removably connected and sealed to a sampling container under conditions of absolute hygiene, necessitating minimum movement of the operator to connect the sampling container to the tube and to disconnect it therefrom.
- a safety needle connector as described in the document U.S. Pat. No. 4,784,650, comprising a hollow needle through which fluid can pass, a needle support sleeve and a protective cylinder.
- the needle support sleeve carries the needle and connects it and seals it to the fluid tube to which it is fixed.
- a protruding needle portion axially extends the needle support sleeve at the end opposite the fluid tube.
- the protective cylinder defines an interior space containing the projecting needle portion, with an open distal end for inserting the sampling container to be connected by the needle and a closed proximal end for connection to the needle support sleeve.
- the prior art devices comprise a safety connector in two main parts designed to be assembled together, namely a needle support sleeve and a protective cylinder, with connecting means for clipping the protective cylinder to the needle support sleeve.
- the connecting means comprise a large-diameter proximal cylinder with a proximal opening followed by a smaller diameter distal cylinder whose bottom communicates with the interior of the protective cylinder via a needle passage.
- Retaining means are provided for axially retaining the needle support sleeve engaged in the proximal cylinder and in the distal cylinder.
- the retaining means comprise clipping holes in the lateral wall of the distal cylinder in which engage protuberances on the needle support sleeve.
- the prior art needle type safety connectors have drawbacks that affect their safety in use.
- the resistance to tearing out of the needle is poor; sometimes drops of blood may flow out of the sampling phial during the movement of withdrawing the phial, and these drops of blood may flow through the clipping holes in the proximal cylinder; there is also a non-negligible risk of permanent deformation of the distal cylinder when the needle support sleeve is pushed into the distal cylinder and the proximal cylinder; this kind of permanent deformation further increases the risks of a defective seal and of blood flowing out of the protective cylinder; because of the small axial clipping travel, it is also difficult to control the clipping of the protective cylinder onto the needle support sleeve.
- the problem addressed by the present invention is that of designing a new safety needle connector structure that is easy to assemble to the needle support tube by simple clipping, that is sealed, that may be closed for safety after use, and that retains the needle sufficiently to prevent any movement caused by the axial force of pushing in the sampling phial.
- a safety needle connector comprising a hollow needle through which fluid can pass, a needle support sleeve, and a protective cylinder, the needle support sleeve carrying the needle and connecting it and sealing it to a fluid tube to which it is fixed, a projecting needle portion axially extending the needle support sleeve at the end opposite the fluid tube, the protective cylinder having an interior space containing the projecting needle portion, with an open distal end for inserting a sampling container to be connected by the needle, and with a closed proximal end with connection means for connecting it to the needle support sleeve; the connection means comprising a proximal cylinder with a large diameter and a proximal opening followed by a distal cylinder with a smaller diameter whose bottom communicates with the interior space of the protective cylinder via a needle passage and comprising retaining means for axially retaining the needle support sleeve engaged in the proximal cylinder and in the distal
- the locking tongue means comprise two diametrically opposite tongues.
- a closure sleeve is engaged around the projecting needle portion and passes through the needle passage in the bottom of the distal cylinder to provide a seal between the needle and the bottom of the distal cylinder. Simultaneously, the sleeve retracted by virtue of elastic deformation in the axial direction when the phial is engaged around the needle, and is axially deployed again around the needle to close off its distal orifice upon withdrawal of the sampling phial.
- the needle support sleeve comprises a sealing flange, offset in the upstream direction from the bearing flange, and bearing against the locking tongue means when the needle support sleeve is engaged in the protective cylinder.
- FIG. 1 is a diagrammatic general view of a blood sampling system using a safety needle connector of the present invention
- FIG. 2 is a partial detail view to a larger scale and in longitudinal section of one embodiment of a safety needle connector of the invention, prior to assembly;
- FIG. 3 is a view to a larger scale of the safety connector from FIG. 1 in longitudinal section taken along the line A-A in FIG. 4 and in the assembled state;
- FIG. 4 is an end view of the FIG. 3 safety connector.
- FIG. 1 shows the general structure of a blood sampling device using a safety connector of the present invention.
- tubes convey blood either to a series of sachets 2 , 3 and 4 or to a test sampling assembly 5 , according to the settings of valves 6 and 7 controlled by the operator.
- the test sampling assembly 5 comprises a buffer sachet 19 in series in a fluid tube 8 , for example.
- the end of the fluid tube 8 carries the safety needle connector 9 of the invention.
- the safety needle connector 9 comprises a hollow needle 10 through which fluid can pass, a needle sleeve 11 , and a protective cylinder 12 .
- the needle support sleeve 11 is fixed to the end of the fluid tube 8 and carries the needle 10 , which it connects and seals to the fluid tube 8 .
- the needle 10 has a projecting needle portion 10 a at the end opposite the fluid tube 8 that extends the needle support sleeve 11 axially.
- the protective cylinder 12 defines an interior space 12 a whose shape is adapted to contain the whole of the projecting needle portion 10 a to prevent any contact of an operator's hand with the sharp end portion 10 c of the needle 10 .
- the protective cylinder 12 further comprises an open distal end 12 b for inserting a sampling container 13 to be connected to the fluid tube 8 .
- the distal end 12 b may be closed off by a seal 14 adapted to be folded over.
- the sampling container 13 comprises a stopper 13 a made from a material that may be pierced by the projecting needle portion 10 a , and the shape of the sampling container 13 is adapted to fit into the interior space 12 a of the protective cylinder 12 .
- the stopper 13 a On applying pressure 13 b to push the sampling container 13 axially in the direction of the needle 10 , the stopper 13 a is pierced by the needle 10 , which establishes communication between the interior of the sampling container 13 and the fluid tube 8 to introduce an appropriate quantity of blood into the sampling container 13 , which may then simply be extracted axially from the protective cylinder 12 : the stopper 13 a closing elastically on itself to seal the sampling container 13 .
- the protective cylinder 12 has a closed proximal end 12 c with means for connecting it to the needle support sleeve 11 .
- the connecting means are adapted to enable the protective cylinder 12 and the needle support sleeve 11 to be assembled together by clipping them together by virtue of a simple movement in axial translation 11 e toward each other.
- the same movement in axial translation 11 e toward each other makes a seal that makes it impossible for blood to flow from the interior space 12 a of the protective cylinder 12 onto its exterior surface and onto the needle support sleeve 11 .
- the connecting means for the protective cylinder 12 comprise a proximal cylinder 12 d having an inside diameter D d larger than the diameter of the needle support sleeve 11 .
- the proximal cylinder 12 d is followed by a distal cylinder 12 e with a smaller inside diameter D e , with an intermediate shoulder 12 f which connects the proximal cylinder 12 d and the distal cylinder 12 e.
- the distal cylinder 12 e terminates at a bottom 12 g that communicates with the interior space 12 a of the protective cylinder 12 via a small diameter needle passage 12 h.
- the lateral walls of the proximal cylinder 12 d and the distal cylinder 12 e are fluid-tight, i.e. comprise no openings that would allow a fluid such as blood to pass through them.
- the needle support sleeve 11 comprises a bearing flange 11 a shaped to penetrate into the proximal cylinder 12 d and to abut against the intermediate shoulder 12 f when the needle support sleeve 11 is engaged on the protective cylinder 12 in the assembly position, as shown in FIG. 3 .
- the proximal cylinder 12 d comprises elastically flexible locking tongue means, for example two diametrically opposite tongues 12 i and 12 j , that cooperate with the bearing flange 11 a to provide the clipping means opposing separation of the needle support sleeve 11 and the protective cylinder 12 when they are assembled together.
- the elastically flexible locking tongues 12 i and 12 j are, starting from an intermediate region of the proximal cylinder 12 d , oriented obliquely toward the proximal end 12 k of the proximal cylinder 12 d , as may be seen in FIG. 2 , and their free ends are at a distance from each other less than the diameter of the bearing flange 11 a .
- the bearing flange 11 a bears on the free ends of the locking tongues 12 i and 12 j , pushing them back toward the shoulder 12 f .
- the locking tongues 12 i and 12 j then flex until they assume an opposite oblique orientation toward the shoulder 12 f , as may be seen in FIG. 3 .
- the bearing flange 11 a may continue its travel until it abuts against the intermediate shoulder 12 f , the locking tongues 12 i and 12 j then bearing against the proximal face of the bearing flange 11 a , as may be seen in FIG. 3 .
- the locking tongues 12 i and 12 j also bear on the adjacent cylindrical portion 11 b of the needle support sleeve 11 , this cylindrical portion 11 b having a diameter that is sufficient to maintain the locking tongues 12 i and 12 j oriented obliquely toward the shoulder 12 f .
- the locking tongues 12 i and 12 j then oppose withdrawal of the needle support sleeve 11 from the protective cylinder 12 .
- a closure seal 15 is fitted around the protecting needle portion 10 a and passes through the needle passage 12 h in the bottom 12 g of the distal cylinder 12 e , providing the seal between the needle 10 and the bottom 12 g of the distal cylinder 12 e .
- the closure sleeve 15 is simultaneously made from an elastically retractable material and closes the free end 10 c of the needle 10 when there is no sampling phial 13 engaged over the needle 10 .
- a proximal end portion 15 a of the closure sleeve 15 is compressed axially between the distal end 11 c of the needle support sleeve 11 and the bottom 12 g of the distal cylinder 12 e . This improves the seal.
- the needle support sleeve 11 further comprises a sealing flange 11 d offset in the upstream direction from the bearing flange 11 a and adapted to bear against the locking tongues 12 i and 12 j when the needle support sleeve 11 is engaged in the protective cylinder 12 .
- the protective cylinder 12 may advantageously be molded from a first plastic material such as polypropylene.
- the needle support sleeve 11 may be molded from a second plastic material such as polycarbonate.
- the closure sleeve 15 is advantageously made from a closed cell resilient foam or an elastically flexible elastomer such as latex.
Abstract
A safety needle connector according to the invention comprises a hollow needle through which fluid may pass fastened to a needle support sleeve itself connected to a fluid tube. The needle support sleeve may be connected by clipping it axially into a receiving structure of a protective cylinder that surrounds a projecting needle portion. The receiving structure comprises receiving cylinders in which the needle support sleeve is engaged and comprising locking tongues that cooperate with a bearing flange to allow penetration of the needle support sleeve and prevent its withdrawal. A closure sleeve is engaged around the projecting needle portion to form a sealed connection in the needle passage.
Description
- The present invention relates to safety connectors for connecting a sampling container to a fluid tube. The invention relates in particular to connectors of the above kind for taking blood samples in applications in the health field.
- When taking blood samples, in particular for blood donations, the blood must be systematically analyzed by taking a small sample of blood in a sampling container. To this end, a fluid tube must be removably connected and sealed to a sampling container under conditions of absolute hygiene, necessitating minimum movement of the operator to connect the sampling container to the tube and to disconnect it therefrom.
- At the same time, the operator must be protected against all risks of injury and contamination by the blood sample.
- To this end, there has already been designed a safety needle connector as described in the document U.S. Pat. No. 4,784,650, comprising a hollow needle through which fluid can pass, a needle support sleeve and a protective cylinder. The needle support sleeve carries the needle and connects it and seals it to the fluid tube to which it is fixed. A protruding needle portion axially extends the needle support sleeve at the end opposite the fluid tube. The protective cylinder defines an interior space containing the projecting needle portion, with an open distal end for inserting the sampling container to be connected by the needle and a closed proximal end for connection to the needle support sleeve.
- In practice, it is necessary to produce the needle support sleeve and the protective cylinder as separate components, in order to be able to use different components having satisfactory properties in respect of clipping, on the one hand, and firm retention of the needle in the needle support sleeve, on the other hand.
- To this end, the prior art devices comprise a safety connector in two main parts designed to be assembled together, namely a needle support sleeve and a protective cylinder, with connecting means for clipping the protective cylinder to the needle support sleeve.
- The connecting means comprise a large-diameter proximal cylinder with a proximal opening followed by a smaller diameter distal cylinder whose bottom communicates with the interior of the protective cylinder via a needle passage. Retaining means are provided for axially retaining the needle support sleeve engaged in the proximal cylinder and in the distal cylinder.
- In the prior art devices, the retaining means comprise clipping holes in the lateral wall of the distal cylinder in which engage protuberances on the needle support sleeve.
- The prior art needle type safety connectors have drawbacks that affect their safety in use. In particular, the resistance to tearing out of the needle is poor; sometimes drops of blood may flow out of the sampling phial during the movement of withdrawing the phial, and these drops of blood may flow through the clipping holes in the proximal cylinder; there is also a non-negligible risk of permanent deformation of the distal cylinder when the needle support sleeve is pushed into the distal cylinder and the proximal cylinder; this kind of permanent deformation further increases the risks of a defective seal and of blood flowing out of the protective cylinder; because of the small axial clipping travel, it is also difficult to control the clipping of the protective cylinder onto the needle support sleeve.
- The problem addressed by the present invention is that of designing a new safety needle connector structure that is easy to assemble to the needle support tube by simple clipping, that is sealed, that may be closed for safety after use, and that retains the needle sufficiently to prevent any movement caused by the axial force of pushing in the sampling phial.
- To achieve the above and other objects, the invention proposes a safety needle connector comprising a hollow needle through which fluid can pass, a needle support sleeve, and a protective cylinder, the needle support sleeve carrying the needle and connecting it and sealing it to a fluid tube to which it is fixed, a projecting needle portion axially extending the needle support sleeve at the end opposite the fluid tube, the protective cylinder having an interior space containing the projecting needle portion, with an open distal end for inserting a sampling container to be connected by the needle, and with a closed proximal end with connection means for connecting it to the needle support sleeve; the connection means comprising a proximal cylinder with a large diameter and a proximal opening followed by a distal cylinder with a smaller diameter whose bottom communicates with the interior space of the protective cylinder via a needle passage and comprising retaining means for axially retaining the needle support sleeve engaged in the proximal cylinder and in the distal cylinder; according to the invention:
-
- the lateral walls of the proximal cylinder and the distal cylinder are fluid-tight,
- the needle support sleeve comprises a bearing flange conformed to penetrate with appropriate peripheral clearance into the proximal cylinder and to abut against an intermediate shoulder connecting the proximal cylinder and the distal cylinder,
- the proximal cylinder comprises elastically flexible locking tongue means which when at rest, and starting from an intermediate region of the protective cylinder, are oriented in an oblique direction toward the proximal end to bear against the distal face of the bearing flange, and then, following flexing in the downstream direction of the locking tongue means upon penetration of the needle support sleeve, to bear against the proximal face of the bearing flange, thereby opposing withdrawal of the needle support sleeve from the protective cylinder.
- In one advantageous embodiment of the invention the locking tongue means comprise two diametrically opposite tongues.
- To provide an effective seal for the needle after removing the sampling phial, a closure sleeve is engaged around the projecting needle portion and passes through the needle passage in the bottom of the distal cylinder to provide a seal between the needle and the bottom of the distal cylinder. Simultaneously, the sleeve retracted by virtue of elastic deformation in the axial direction when the phial is engaged around the needle, and is axially deployed again around the needle to close off its distal orifice upon withdrawal of the sampling phial.
- In practice, the needle support sleeve comprises a sealing flange, offset in the upstream direction from the bearing flange, and bearing against the locking tongue means when the needle support sleeve is engaged in the protective cylinder.
- Other objects, features and advantages of the present invention will emerge from the following description of particular embodiments of the invention, which is given with reference to the appended drawings, in which
-
FIG. 1 is a diagrammatic general view of a blood sampling system using a safety needle connector of the present invention; -
FIG. 2 is a partial detail view to a larger scale and in longitudinal section of one embodiment of a safety needle connector of the invention, prior to assembly; -
FIG. 3 is a view to a larger scale of the safety connector fromFIG. 1 in longitudinal section taken along the line A-A inFIG. 4 and in the assembled state; and -
FIG. 4 is an end view of theFIG. 3 safety connector. -
FIG. 1 shows the general structure of a blood sampling device using a safety connector of the present invention. - From a
blood source 1 shown diagrammatically, for example a catheter inserted into the venous system of a patient, tubes convey blood either to a series ofsachets test sampling assembly 5, according to the settings ofvalves - The
test sampling assembly 5 comprises abuffer sachet 19 in series in afluid tube 8, for example. The end of thefluid tube 8 carries thesafety needle connector 9 of the invention. - The
safety needle connector 9 comprises ahollow needle 10 through which fluid can pass, aneedle sleeve 11, and aprotective cylinder 12. Theneedle support sleeve 11 is fixed to the end of thefluid tube 8 and carries theneedle 10, which it connects and seals to thefluid tube 8. Theneedle 10 has a projectingneedle portion 10 a at the end opposite thefluid tube 8 that extends theneedle support sleeve 11 axially. - The
protective cylinder 12 defines aninterior space 12 a whose shape is adapted to contain the whole of the projectingneedle portion 10 a to prevent any contact of an operator's hand with thesharp end portion 10 c of theneedle 10. Theprotective cylinder 12 further comprises an opendistal end 12 b for inserting asampling container 13 to be connected to thefluid tube 8. Thedistal end 12 b may be closed off by aseal 14 adapted to be folded over. In a manner that is known in the art, thesampling container 13 comprises astopper 13 a made from a material that may be pierced by the projectingneedle portion 10 a, and the shape of thesampling container 13 is adapted to fit into theinterior space 12 a of theprotective cylinder 12. On applyingpressure 13 b to push thesampling container 13 axially in the direction of theneedle 10, thestopper 13 a is pierced by theneedle 10, which establishes communication between the interior of thesampling container 13 and thefluid tube 8 to introduce an appropriate quantity of blood into thesampling container 13, which may then simply be extracted axially from the protective cylinder 12: thestopper 13 a closing elastically on itself to seal thesampling container 13. - Consider now the details of the structure of the
safety connector 9, as shown in FIGS. 2 to 4. - These figures show again the
needle support sleeve 11, theneedle 10 and theprotective cylinder 12. - The
protective cylinder 12 has a closedproximal end 12 c with means for connecting it to theneedle support sleeve 11. The connecting means are adapted to enable theprotective cylinder 12 and theneedle support sleeve 11 to be assembled together by clipping them together by virtue of a simple movement inaxial translation 11 e toward each other. At the same time, the same movement inaxial translation 11 e toward each other makes a seal that makes it impossible for blood to flow from theinterior space 12 a of theprotective cylinder 12 onto its exterior surface and onto theneedle support sleeve 11. - The connecting means for the
protective cylinder 12 comprise aproximal cylinder 12 d having an inside diameter Dd larger than the diameter of theneedle support sleeve 11. Theproximal cylinder 12 d is followed by adistal cylinder 12 e with a smaller inside diameter De, with anintermediate shoulder 12 f which connects theproximal cylinder 12 d and thedistal cylinder 12 e. - The
distal cylinder 12 e terminates at abottom 12 g that communicates with theinterior space 12 a of theprotective cylinder 12 via a smalldiameter needle passage 12 h. - The lateral walls of the
proximal cylinder 12 d and thedistal cylinder 12 e are fluid-tight, i.e. comprise no openings that would allow a fluid such as blood to pass through them. - The
needle support sleeve 11 comprises abearing flange 11 a shaped to penetrate into theproximal cylinder 12 d and to abut against theintermediate shoulder 12 f when theneedle support sleeve 11 is engaged on theprotective cylinder 12 in the assembly position, as shown inFIG. 3 . - The
proximal cylinder 12 d comprises elastically flexible locking tongue means, for example two diametricallyopposite tongues bearing flange 11 a to provide the clipping means opposing separation of theneedle support sleeve 11 and theprotective cylinder 12 when they are assembled together. - To this end, when at rest, the elastically
flexible locking tongues proximal cylinder 12 d, oriented obliquely toward theproximal end 12 k of theproximal cylinder 12 d, as may be seen inFIG. 2 , and their free ends are at a distance from each other less than the diameter of thebearing flange 11 a. As a result, when theneedle support sleeve 11 is moved toward theprotective cylinder 12, thebearing flange 11 a bears on the free ends of thelocking tongues shoulder 12 f. Thelocking tongues shoulder 12 f, as may be seen inFIG. 3 . - Because an appropriate peripheral clearance is provided between the
bearing flange 11 a and the peripheral wall of theproximal cylinder 12 d, or because of the elasticity of the material constituting theproximal cylinder 12 d, which is able to spread slightly when thebearing flange 11 a passes between thelocking tongues bearing flange 11 a may continue its travel until it abuts against theintermediate shoulder 12 f, thelocking tongues bearing flange 11 a, as may be seen inFIG. 3 . In this position, thelocking tongues cylindrical portion 11 b of theneedle support sleeve 11, thiscylindrical portion 11 b having a diameter that is sufficient to maintain thelocking tongues shoulder 12 f. Thelocking tongues needle support sleeve 11 from theprotective cylinder 12. - In the embodiment shown in
FIGS. 1, 3 and 4, aclosure seal 15 is fitted around the protectingneedle portion 10 a and passes through theneedle passage 12 h in thebottom 12 g of thedistal cylinder 12 e, providing the seal between theneedle 10 and thebottom 12 g of thedistal cylinder 12 e. Theclosure sleeve 15 is simultaneously made from an elastically retractable material and closes thefree end 10 c of theneedle 10 when there is no samplingphial 13 engaged over theneedle 10. - In the assembled position shown in
FIG. 3 , aproximal end portion 15 a of theclosure sleeve 15 is compressed axially between thedistal end 11 c of theneedle support sleeve 11 and the bottom 12 g of thedistal cylinder 12 e. This improves the seal. - In the embodiment shown in
FIGS. 1 and 3 , theneedle support sleeve 11 further comprises a sealingflange 11 d offset in the upstream direction from the bearingflange 11 a and adapted to bear against the lockingtongues needle support sleeve 11 is engaged in theprotective cylinder 12. - The
protective cylinder 12 may advantageously be molded from a first plastic material such as polypropylene. - Simultaneously, the
needle support sleeve 11 may be molded from a second plastic material such as polycarbonate. - The
closure sleeve 15 is advantageously made from a closed cell resilient foam or an elastically flexible elastomer such as latex. - The present invention is not limited to the embodiments that have been explicitly described and includes variants and generalizations thereof within the scope of the following claims.
Claims (7)
1. A safety needle connector comprising a hollow needle through which fluid can pass, a needle support sleeve, and a protective cylinder, the needle support sleeve carrying the needle and connecting it and sealing it to a fluid tube to which it is fixed, a projecting needle portion axially extending the needle support sleeve at the end opposite the fluid tube, the protective cylinder having an interior space containing the projecting needle portion, with an open distal end for inserting a sampling container to be connected by the needle and with a closed proximal end with connection means for connecting it to the needle support sleeve, the connection means comprising a proximal cylinder with a large diameter and a proximal opening followed by a distal cylinder with a smaller diameter whose bottom communicates with the interior space of the protective cylinder via a needle passage and comprising retaining means for axially retaining the needle support sleeve engaged in the proximal cylinder and in the distal cylinder,
wherein
the lateral walls of the proximal cylinder and the distal cylinder are fluid-tight,
the needle support sleeve comprises a bearing flange conformed to penetrate with appropriate peripheral clearance into the proximal cylinder and to abut against an intermediate shoulder connecting the proximal cylinder and the distal cylinder,
the proximal cylinder comprises elastically flexible locking tongue means which when at rest, and starting from an intermediate region of the protective cylinder, are oriented in an oblique direction toward the proximal end to bear against the distal face of the bearing flange, and then, following flexing in the downstream direction of the locking tongue means upon penetration of the needle support sleeve, to bear against the proximal face of the bearing flange, thereby opposing withdrawal of the needle support sleeve from the protective cylinder.
2. A safety connector according to claim 1 , wherein the locking tongue means comprise two diametrically opposite tongues.
3. A safety connector according to claim 1 , wherein a closure sleeve is engaged around the projecting needle portion and passes through the needle passage in the bottom of the distal cylinder to provide a seal between the needle and the bottom of the distal cylinder.
4. A safety connector according to claim 1 , wherein the needle support sleeve comprises a sealing flange, offset in the upstream direction from the bearing flange, and bearing against the locking tongue means when the needle support sleeve is engaged in the protective cylinder.
5. A safety connector according to claim 1 , wherein the protective cylinder is molded from a first plastic material such as polypropylene.
6. A safety connector according to claim 1 , wherein the needle support sleeve is molded from a second plastic material such as polycarbonate.
7. A safety connector according to claim 1 , wherein the closure sleeve is made from a closed cell resilient foam or an elastically flexible elastomer such as latex.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0400681 | 2004-01-22 | ||
FR0400681A FR2865408B1 (en) | 2004-01-22 | 2004-01-22 | SAFETY CONNECTOR NEEDLE |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050165330A1 true US20050165330A1 (en) | 2005-07-28 |
Family
ID=34630670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/035,779 Abandoned US20050165330A1 (en) | 2004-01-22 | 2005-01-14 | Needle type safety connector |
Country Status (7)
Country | Link |
---|---|
US (1) | US20050165330A1 (en) |
EP (1) | EP1557124B1 (en) |
AT (1) | ATE355014T1 (en) |
CA (1) | CA2492951A1 (en) |
DE (1) | DE602005000600T2 (en) |
ES (1) | ES2282985T3 (en) |
FR (1) | FR2865408B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150216465A1 (en) * | 2012-08-31 | 2015-08-06 | Terumo Kabushiki Kaisha | Blood Sampling Device and Blood Bag System |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3034001B1 (en) * | 2015-03-25 | 2017-03-24 | P2A Medical | SAFETY CONNECTOR NEEDLE |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4784650A (en) * | 1987-03-23 | 1988-11-15 | Coburn Timothy J | Needle holder |
US5084034A (en) * | 1990-06-08 | 1992-01-28 | Tufts University | Method for sampling body fluids |
US5104533A (en) * | 1987-07-08 | 1992-04-14 | Andreas Szabados | Filtration unit with pressure compensation |
US20010041866A1 (en) * | 1998-07-29 | 2001-11-15 | Richard J. Rodrick | Single-use syringe |
US6395233B1 (en) * | 2000-01-03 | 2002-05-28 | Quest Diagnostics Investments, Inc. | Rapid dialysis cell and method for automated instrumentation |
US20030163063A1 (en) * | 2002-02-25 | 2003-08-28 | Yoshio Higaki | Blood collecting needle |
US20030176813A1 (en) * | 1999-07-29 | 2003-09-18 | Jean-Marie Mathias | Biological fluid sampling apparatus |
US20030208161A1 (en) * | 2002-05-02 | 2003-11-06 | Becton, Dickinson And Company | Needle holder for use with safety needle assembly |
US20040215107A1 (en) * | 2003-01-31 | 2004-10-28 | Sarstedt Ag & Co. | Blood collection device with a holder having a cannula for venipuncture |
US6979307B2 (en) * | 1997-06-24 | 2005-12-27 | Cascade Medical Enterprises Llc | Systems and methods for preparing autologous fibrin glue |
US20060200077A1 (en) * | 2002-11-18 | 2006-09-07 | Nardino Righi | Guard mechanism attachable to standard syringe to transform it into a safety syringe |
US7226432B2 (en) * | 2004-05-03 | 2007-06-05 | Clear View Patient Safety Products, Llc | Blood drawing device |
US7261698B2 (en) * | 2003-04-24 | 2007-08-28 | Sherwood Services Ag | Transfer needle safety apparatus |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2120348A5 (en) * | 1970-12-30 | 1972-08-18 | Jintan Terumo Co | |
CN1083706C (en) * | 1997-09-16 | 2002-05-01 | 陈隆雄 | Human engineering safe vacuumatic hemospat |
-
2004
- 2004-01-22 FR FR0400681A patent/FR2865408B1/en not_active Expired - Fee Related
-
2005
- 2005-01-14 US US11/035,779 patent/US20050165330A1/en not_active Abandoned
- 2005-01-19 ES ES05356012T patent/ES2282985T3/en active Active
- 2005-01-19 AT AT05356012T patent/ATE355014T1/en not_active IP Right Cessation
- 2005-01-19 CA CA002492951A patent/CA2492951A1/en not_active Abandoned
- 2005-01-19 EP EP05356012A patent/EP1557124B1/en not_active Not-in-force
- 2005-01-19 DE DE602005000600T patent/DE602005000600T2/en not_active Expired - Fee Related
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4784650A (en) * | 1987-03-23 | 1988-11-15 | Coburn Timothy J | Needle holder |
US5104533A (en) * | 1987-07-08 | 1992-04-14 | Andreas Szabados | Filtration unit with pressure compensation |
US5084034A (en) * | 1990-06-08 | 1992-01-28 | Tufts University | Method for sampling body fluids |
US6979307B2 (en) * | 1997-06-24 | 2005-12-27 | Cascade Medical Enterprises Llc | Systems and methods for preparing autologous fibrin glue |
US20010041866A1 (en) * | 1998-07-29 | 2001-11-15 | Richard J. Rodrick | Single-use syringe |
US20030176813A1 (en) * | 1999-07-29 | 2003-09-18 | Jean-Marie Mathias | Biological fluid sampling apparatus |
US6395233B1 (en) * | 2000-01-03 | 2002-05-28 | Quest Diagnostics Investments, Inc. | Rapid dialysis cell and method for automated instrumentation |
US20030163063A1 (en) * | 2002-02-25 | 2003-08-28 | Yoshio Higaki | Blood collecting needle |
US20030208161A1 (en) * | 2002-05-02 | 2003-11-06 | Becton, Dickinson And Company | Needle holder for use with safety needle assembly |
US20060200077A1 (en) * | 2002-11-18 | 2006-09-07 | Nardino Righi | Guard mechanism attachable to standard syringe to transform it into a safety syringe |
US20040215107A1 (en) * | 2003-01-31 | 2004-10-28 | Sarstedt Ag & Co. | Blood collection device with a holder having a cannula for venipuncture |
US7261698B2 (en) * | 2003-04-24 | 2007-08-28 | Sherwood Services Ag | Transfer needle safety apparatus |
US7226432B2 (en) * | 2004-05-03 | 2007-06-05 | Clear View Patient Safety Products, Llc | Blood drawing device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150216465A1 (en) * | 2012-08-31 | 2015-08-06 | Terumo Kabushiki Kaisha | Blood Sampling Device and Blood Bag System |
US10517519B2 (en) * | 2012-08-31 | 2019-12-31 | Terumo Kabushiki Kaisha | Blood sampling device and blood bag system |
Also Published As
Publication number | Publication date |
---|---|
ES2282985T3 (en) | 2007-10-16 |
ATE355014T1 (en) | 2006-03-15 |
DE602005000600D1 (en) | 2007-04-12 |
DE602005000600T2 (en) | 2007-11-22 |
FR2865408A1 (en) | 2005-07-29 |
CA2492951A1 (en) | 2005-07-22 |
EP1557124B1 (en) | 2007-02-28 |
EP1557124A1 (en) | 2005-07-27 |
FR2865408B1 (en) | 2006-03-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: P2A MEDICAL, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ORLU, ALAIN;COMMARET, PIERRE-ANDRE;REEL/FRAME:016180/0077 Effective date: 20050106 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |