US20020022803A1 - Compact needle shielding device - Google Patents
Compact needle shielding device Download PDFInfo
- Publication number
- US20020022803A1 US20020022803A1 US09/785,103 US78510301A US2002022803A1 US 20020022803 A1 US20020022803 A1 US 20020022803A1 US 78510301 A US78510301 A US 78510301A US 2002022803 A1 US2002022803 A1 US 2002022803A1
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- United States
- Prior art keywords
- needle
- catheter
- hub
- tether
- introducer
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Classifications
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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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0637—Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0618—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for protecting only the distal tip of the needle, e.g. a needle guard
- A61M25/0625—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for protecting only the distal tip of the needle, e.g. a needle guard with a permanent connection to the needle hub, e.g. a guiding rail, a locking mechanism or a guard advancement mechanism
-
- 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
- A61M2005/325—Means obstructing the needle passage at distal end of a needle protection sleeve
-
- 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
- A61M2005/3256—Constructional features thereof, e.g. to improve manipulation or functioning having folding ring sections
-
- 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
- A61M5/3275—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel being connected to the needle hub or syringe by radially deflectable members, e.g. longitudinal slats, cords or bands
Definitions
- the subject invention relates to a catheter and introducer needle assembly that includes a needle shield that will safely shield the sharp distal tip of the introducer needle after the needle has been used to insert the catheter into a patient.
- IV catheters are used for infusing fluid, such as normal saline solution, various medicaments and total parenteral nutrition, into a patient or withdrawing blood from a patient.
- Peripheral IV catheters tend to be relatively short, and are on the order of about one and one-half inches in length.
- the most common type of IV catheter is an over the needle peripheral IV catheter.
- an over the needle catheter is mounted over an introducer needle having a sharp distal tip. The catheter and the introducer needle are assembled so that the distal tip of the introducer needle extends beyond the distal tip of the catheter with the bevel of the needle facing up away from the patient's skin.
- the catheter and introducer needle assembly is inserted at a shallow angle through the patient's skin into a peripheral blood vessel. These are smaller blood vessels that are not connected directly to the heart but are the branches of the central blood vessels that are directly connected to the heart.
- the clinician confirms that there is flashback of blood in the needle and in a flashback chamber located at the proximal end of the needle.
- the flashback chamber is typically formed as part of the needle hub.
- a ported catheter includes a radially extending side port integral with the catheter hub.
- the fluid-handling device is connected to the side port.
- Such ported catheters are typically used in Europe.
- a straight catheter does not include a side port so that the fluid-handling device is connected to the proximal end of the catheter hub. Such straight catheters are typically used in the United States.
- an introducer needle has been used to place a catheter in the vein of an AIDS or hepatitis infected person, the introducer needle is a vehicle for the transmission of the disease.
- clinicians are aware of the need to properly handle “blood contaminated sharps”, unfortunately in certain medical environments, such as emergency situations or as a result of inattention or neglect, needlesticks with contaminated introducer needles still occur.
- needle shields As a result of the problem of accidental needlesticks by “blood contaminated sharps”, various needle shields have been developed. Generally, such needle shields work for their intended purpose but could be improved. For example, some needle shields are bulky, difficult to use or require special features or techniques to be operative or are ergonomically uncomfortable for the clinician to use. In addition, some needle shields cannot be used with both ported and straight catheters or would require a significant change in technique by the clinician in order to be used in both ported and straight catheters. Furthermore, certain needle shields prevent access through the introducer needle to the blood vessel during venipuncture.
- the catheter and introducer needle assembly with the needle shield and tether of this invention includes a catheter having a distal end and a proximal end connected to the distal end of a catheter hub.
- the introducer needle has a sharp distal tip and a proximal end connected to the distal end of a needle hub.
- a flashback chamber is defined in the needle hub.
- a vented plug may be located in the open proximal end of the flashback chamber to allow air to escape from the flashback chamber when blood enters the flashback chamber from the introducer needle. When the vented plug is removed during venipuncture, the clinician can gain access to the blood vessel through the introducer needle.
- the catheter is coaxially disposed over the introducer needle so the sharp distal tip of the introducer needle is distal of the distal end of the catheter.
- the needle shield is located substantially between the catheter and the needle hub and defines a longitudinally extending passage through which the introducer needle extends.
- the needle shield may include some barrier or other mechanism that prevents the sharp distal tip of the needle from being moved distally with respect to the needle shield after the sharp distal tip of the needle has been withdrawn into the needle shield. This prevents the sharp distal tip of the needle from being reexposed once it has been withdrawn into the needle shield.
- the needle shield is connected to the needle hub by a tether that prevents the needle shield from being moved distally past the sharp distal tip of the needle once the needle has been proximally withdrawn into the needle shield.
- the combination of the barrier or other mechanism associated with the needle shield and the tether prevents distal movement of the needle with respect to the needle shield. This ensures that the sharp distal tip of the needle remains trapped in the needle shield after the needle has been withdrawn proximally into the needle shield after use.
- the tether is folded over itself to form a plurality of pleats like an accordion. Each pleat or fold defines a central opening therein to allow the needle to extend through each pleat or fold no matter whether the tether is completely extended or completely folded with the needle shield adjacent to the needle hub. Because the tether can be folded into a small space so it is located between the needle shield and the needle hub, the overall device is compact. This makes the overall device easier to control by the clinician. In addition, the pleated configuration of the tether allows the clinician to better control the action of the needle shield.
- the tether is connected to the needle hub and the needle shield by a variety of mechanisms, such as by an adhesive, by heat-sealing or by mechanical engagement.
- FIG. 1 is a perspective view of a ported catheter and introducer needle assembly with the needle shield and tether of this invention prior to use;
- FIG. 2 is a perspective view of a ported catheter and introducer needle assembly with the needle shield and tether of this invention after the needle has been withdrawn from the catheter into the needle shield and the needle shield has been removed from the catheter hub;
- FIG. 3 is a top plan view of a ported catheter and introducer needle assembly with the needle shield and tether of this invention prior to use;
- FIG. 4 is a top plan view of a ported catheter and introducer needle assembly with the needle shield and tether of this invention after the needle has been withdrawn from the catheter into the needle shield and the needle shield has been removed from the catheter hub;
- FIG. 5 is an exploded bottom perspective view in partial cross section and partially in phantom of a portion of the needle shield, tether and the needle hub illustrating one method of connecting the tether to the needle shield and the needle hub;
- FIG. 6 is a bottom perspective view in partial cross section and partially in phantom of a portion of the needle shield, tether and the needle hub illustrating one method of connecting the tether to the needle shield and the needle hub;
- FIG. 7 is a cross sectional view of a portion of the introducer needle assembly showing the needle shield and tether prior to use and attached to a catheter hub;
- FIG. 8 is a cross sectional view of a portion of the introducer needle assembly showing the needle shield and tether after the sharp distal tip of the introducer needle has been withdrawn into the needle shield and the needle shield has been removed from the catheter hub;
- FIG. 9 is a perspective view of a straight catheter and introducer needle assembly with the needle shield and tether of this invention prior to use;
- FIG. 10 is a bottom perspective view of the needle shield, tether and the needle hub where the needle shield is adjacent to the needle hub illustrating a second method of connecting the tether to the needle hub with the proximal most pleat of the tether disengaged from the needle hub;
- FIG. 11 is a bottom perspective view of the needle shield, tether and the needle hub where the needle shield is adjacent to the needle hub illustrating a second method of connecting the tether to the needle hub with the proximal most pleat of the tether engaged with the needle hub;
- FIG. 12 is a bottom perspective view of introducer needle assembly with the needle shield and tether of this invention after the needle has been withdrawn from the catheter into the needle shield and the needle shield has been removed from the catheter hub illustrating a second method of connecting the tether to the needle hub.
- proximal refers to a location on the catheter and introducer needle assembly with the needle shield and tether of this invention that is closest to the clinician using the device and farthest from the patient in connection with whom the device is used when the device is used in its normal operation.
- distal refers to a location on the catheter and introducer needle assembly with the needle shield and tether of this invention that is farthest from the clinician using the device and closest to the patient in connection with whom the device is used when the device is used in its normal operation.
- the catheter and introducer needle assembly of this invention is identified generally by the numeral 10 . It includes a catheter assembly 20 and an introducer needle assembly 30 that includes a needle shield 40 and a tether 44 .
- Catheter assembly 20 includes a catheter 21 that has a proximal end and a distal end.
- a catheter hub 24 is affixed to the proximal end of catheter 21 .
- Suitable materials for catheter 21 include, but are not limited to, thermoplastic resins such as polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP), polyurethane and the like.
- catheter 21 is formed from thermoplastic hydrophilic polyurethane that softens with exposure to physiological conditions present in the patient's body.
- Suitable materials for catheter hub 24 include, but are not limited to, thermoplastic polymeric resins such as polycarbonate, polystyrene, polypropylene and the like.
- Catheter hub 24 may include a radially outwardly extending side port 25 , which is useful for connecting a fluid handling device to catheter 21 for infusing fluids into the patient's blood vessel. See FIG. 1.
- side port 25 extends upwardly away from the patient when catheter 21 is inserted into the patient.
- a pair of wings 26 may be attached to or integrally formed with catheter hub 24 . Wings 26 are useful to stabilize catheter 21 in the patient and provide a surface that facilitates taping of catheter assembly 20 to the patient to fix catheter 21 properly in the patient's vasculature.
- catheter and introducer needle assembly 10 of this invention is directed to a catheter having a side port, it is to be understood that this invention can also be used with a straight catheter. See for example, FIG. 9.
- a cover 27 may be used to cover catheter 21 and the introducer needle 31 prior to use.
- cover 27 is formed from a hard polymeric material such as thermoplastic polymeric resins, which include polycarbonate, polystyrene, polypropylene and the like. Of course other materials may also be used for cover 27 .
- Introducer needle assembly 30 includes introducer needle 31 having a sharp distal tip defined by a bevel.
- the proximal end of introducer needle 31 is connected to a needle hub 34 .
- Introducer needle 31 is preferably formed from stainless steel.
- Needle hub 34 can include an integrated flashback chamber having an open proximal end. Needle hub 34 is preferably formed from the same types of materials that are used to form catheter hub 24 .
- the open proximal end of needle hub 34 is closed to fluid flow by a vented plug 35 which allows air but not fluid to flow therethrough. This facilitates blood flow into the flashback chamber but prevents blood from leaking out.
- Vented plug 35 may be removably connected to the open proximal end of needle hub 34 . This allows a clinician to gain access to the patient's blood vessel during venipuncture. In this way, a syringe could be attached to the open proximal end of needle hub 34 for aspiration during insertion of catheter and introducer needle assembly 10 .
- Needle hub 34 may also include a radially extending tab 36 , which may be grasped in combination with side port 25 to facilitate insertion of assembly 10 into the patient. Tab 36 may also be useful for withdrawing introducer needle 31 from catheter 21 after catheter 21 has been properly located in the patient's vasculature.
- needle hub 34 may include a pair of longitudinally extending fingers 39 . These fingers 39 frictionally engage needle shield 40 . In this way, needle hub 34 is held in place adjacent to catheter hub 24 so that the sharp distal tip of introducer needle 31 extends distally of the distal end of catheter 21 .
- the proximally directed force needed to overcome the frictional engagement between fingers 39 and needle shield 40 is less than the proximally directed force needed to overcome the removable connection between needle shield 40 and catheter hub 24 .
- introducer needle assembly 30 also includes needle shield 40 .
- suitable materials for needle shield 40 include, but are not limited to, thermoplastic polymeric resins such as polycarbonate, polystyrene, polypropylene and the like.
- Needle shield 40 includes main body portion 41 , which defines a longitudinally extending passage 42 therethrough. Longitudinally extending passage 42 allows introducer needle 31 to extend longitudinally through main body portion 41 .
- the diameter of longitudinally extending passage 42 is slightly larger than the diameter of the main portion of introducer needle 31 . This allows the main portion of introducer needle 31 to easily pass through longitudinally extending passage 42 .
- An annular lip 43 is located along the distal portion of longitudinally extending passage 42 .
- lip 43 is integrally formed with needle shield 40 and contacts the main portion of introducer needle 31 .
- lip 43 acts as a fluid seal along the main portion of introducer needle 31 .
- blood flow between introducer needle 31 and needle shield 40 is minimized to minimize blood leakage from the device.
- transverse barrier 49 located in needle shield 40 to act as a barrier to reexposure of the sharp distal tip of introducer needle 31 after it has been withdrawn into main body portion 41 .
- Transverse barrier 49 is preferably formed as an integral member from a resilient metal, such as stainless steel.
- transverse barrier is formed as a generally cylindrical main body portion 49 b with two lips 49 a in the configuration of a duckbill extending generally proximally from the distal end of main body portion 49 b .
- the longitudinal dimension of main body portion 49 b and lips 49 a can be any value but preferably, main body portion 49 b is longer than lips 49 a . This relationship facilitates the manufacture of this device and makes for a more robust design.
- lips 49 a Prior to use, lips 49 a extend toward the proximal end of introducer needle 31 and generally parallel to the main body portion of introducer needle 31 . See FIG. 7. After proper placement of catheter 21 into a patient's blood vessel, lips 49 a ride along the main body portion of introducer needle 31 when introducer needle 31 is being withdrawn from catheter 21 . Once the sharp distal tip of introducer needle 31 is withdrawn to a position proximal of lips 49 a , the resilient nature of lips 49 a causes them to return to a position that is transverse to introducer needle 31 . The configuration of lips 49 a as shown in FIG. 8 prevents reexposure of the sharp distal tip that could occur if introducer needle 31 were thereafter moved distally with respect to needle shield 40 . See FIG. 8.
- transverse barriers could also be used.
- a transverse barrier having a single arm could be used in place of the pair of lips 49 a forming a duckbill as described above.
- Main body portion 41 also includes a plurality of longitudinally extending fingers 47 . Fingers 47 engage catheter hub 24 to hold introducer needle assembly 30 together with catheter assembly 20 . Thus, as needle hub 34 is moved proximally with respect to catheter hub 24 , needle shield 40 remains adjacent to catheter hub 24 . As described in more detail below, tether 44 has a length that maintains the sharp distal tip of introducer needle 31 in main body portion 41 of needle shield when tether 44 is fully extended. Thus, once the sharp distal tip of introducer needle 31 is moved into main body portion 41 of needle shield 40 , any additional proximally directed movement applied to needle hub 24 will overcome the friction force between fingers 47 and catheter hub 24 . In this way, needle shield 40 can be removed from catheter hub 24 . If desired, main body portion 41 may be configured so that the exterior surface of the distal portion of main body portion 41 frictionally engages the interior surface of catheter hub 24 to help hold needle shield 40 with catheter hub 24 .
- Fingers 47 may also include radially inwardly directed projections 48 .
- Projections 48 are sized to mechanically engage catheter hub 24 by a snap fit. If projections 48 are used, the force needed to remove main body portion 41 from catheter hub 24 may be more precisely controlled than if only fingers 47 or a friction fit are used. Once the proper proximally directed force is applied to main body portion 41 , projections 48 override catheter hub 24 and main body portion 41 can be removed from catheter hub 24 . Again, tether 44 maintains main body portion 41 in the proper location so that the sharp distal tip of introducer needle 31 is safely located within main body portion 41 of needle shield 40 .
- Tether 44 has a length that is comparable to the exposed length of introducer needle 31 . This length maintains the sharp distal tip of introducer needle 31 in main body portion 41 of needle shield 40 when tether 44 is fully extended. Tether 44 is folded over itself to form a plurality of pleats 44 a like an accordion. Each pleat 44 a defines a central opening 45 therein to allow introducer needle 31 to extend through each pleat 44 a whether tether 44 is completely extended, see FIG. 4, or completely folded with main body portion 41 of needle shield 40 adjacent to needle hub 34 , see FIG. 3. By forming tether 44 in this way, a compact design is achieved for catheter and introducer needle assembly 10 .
- Tether 44 can be made of any relatively stiff yet flexible material.
- PET polyethylene terephthalate
- One benefit of using PET is that it is relatively stiff so that when it is folded into a pleated or an accordion-like configuration, it provides a slight biasing force to help maintain tether 44 in the completely extended position. This in turn aids in maintaining needle shield 40 in position over the sharp distal tip of introducer needle 31 .
- Tether 44 can be connected to needle hub 34 and needle shield 40 by any standard means, such as by an adhesive or by heat-sealing.
- tether 44 is connected to needle hub 34 and needle shield 4 o through mechanical engagement as well as by an adhesive.
- a slot 37 may be formed along a distal portion of needle hub 34 where one end of tether 44 can be placed. Slot 37 thus provides an edge along which a proximal pleat 44 b of tether 44 can mechanically engage needle hub 34 to prevent tether 44 from being removed from needle hub 34 during use. See FIGS. 5 and 6.
- a radially extending button 32 defining a slot 33 therein can be formed along a bottom portion of needle hub 34 .
- tether 44 can be located about button 32 so that slot 33 provides an edge along which a proximal pleat 44 b can mechanically engage needle hub 34 . See FIGS. 10 - 12 .
- a distal pleat 44 c can be looped around main body portion 41 of needle shield 40 to prevent tether 44 from being removed from main body portion 41 during use. See FIGS. 5 and 6.
- the clinician In order to place catheter 21 into a patient's blood vessel, the clinician substantially longitudinally aligns introducer needle 31 and catheter 21 with the target blood vessel.
- the bevel defining the sharp distal tip of introducer needle 31 should be facing substantially away from the skin surface during venipuncture.
- the clinician inserts introducer needle 31 and catheter 21 at a shallow angle, preferably less than about 35 degrees, into the skin so that the sharp distal tip of introducer needle 31 enters the target blood vessel.
- the clinician then preferably observes a blood flashback in the flashback chamber.
- the clinician After confirming placement of introducer needle 31 and catheter 21 in the target blood vessel, the clinician advances catheter 21 distally axially along introducer needle 31 into position in the blood vessel. After proper placement of catheter 21 is achieved, the clinician places a finger from her other hand on the patient's skin over the blood vessel distal of distal end of catheter 21 and the sharp distal tip of introducer needle 31 . By placing her finger on the patient's skin and applying sufficient pressure on the skin, the clinician thereby minimizes blood flow through catheter 21 . The clinician then withdraws introducer needle 31 from catheter 21 by pulling needle hub 34 in a proximal direction.
- main body portion 41 of needle shield 40 Once sharp distal tip of introducer needle 31 is located within main body portion 41 of needle shield 40 , continued proximal movement of needle hub 34 will result in a force sufficient to overcome the force holding fingers 47 to catheter hub 24 so that main body portion 41 can be removed from catheter hub 24 . Thereafter, the clinician may attach any desired fluid-handling device to side port 25 , if a ported catheter is used, or to catheter hub 24 , if a straight catheter is used, and commence the planned treatment. Main body portion 41 of needle shield 40 with the sharp distal tip of introducer needle 31 shielded therein may then be disposed of according to the facility's disposal protocol.
- a catheter and introducer needle assembly with a needle shield and tether is provided that is compact, simple and easy to use, that requires no special features or technique to be operative, that is ergonomically comfortable for the clinician to use, that can be used with both ported and straight catheters without any change in technique by the clinician, and that allows access through the introducer needle to the blood vessel during venipuncture.
Abstract
Description
- This application is a continuation-in-part of pending U.S. patent application Ser. No. 09/483,914 filed on Jan. 18, 2000.
- The subject invention relates to a catheter and introducer needle assembly that includes a needle shield that will safely shield the sharp distal tip of the introducer needle after the needle has been used to insert the catheter into a patient.
- Catheters, particularly intravenous (IV) catheters, are used for infusing fluid, such as normal saline solution, various medicaments and total parenteral nutrition, into a patient or withdrawing blood from a patient. Peripheral IV catheters tend to be relatively short, and are on the order of about one and one-half inches in length. The most common type of IV catheter is an over the needle peripheral IV catheter. As its name implies, an over the needle catheter is mounted over an introducer needle having a sharp distal tip. The catheter and the introducer needle are assembled so that the distal tip of the introducer needle extends beyond the distal tip of the catheter with the bevel of the needle facing up away from the patient's skin.
- The catheter and introducer needle assembly is inserted at a shallow angle through the patient's skin into a peripheral blood vessel. These are smaller blood vessels that are not connected directly to the heart but are the branches of the central blood vessels that are directly connected to the heart. In order to verify proper placement of the assembly in the blood vessel, the clinician confirms that there is flashback of blood in the needle and in a flashback chamber located at the proximal end of the needle. The flashback chamber is typically formed as part of the needle hub. Once proper placement is confirmed, the clinician applies pressure to the blood vessel by pressing down on the patient's skin over the distal tip of the introducer needle and the catheter. This finger pressure occludes further blood flow through the introducer needle. The clinician withdraws the introducer needle, leaving the catheter in place, and attaches a fluid-handling device to the catheter hub.
- Clinicians typically use a specific technique when inserting over the needle catheters into a patient. This technique varies depending on whether a ported over the needle catheter or a straight over the needle catheter is used. A ported catheter includes a radially extending side port integral with the catheter hub. In a ported catheter, the fluid-handling device is connected to the side port. Such ported catheters are typically used in Europe. A straight catheter does not include a side port so that the fluid-handling device is connected to the proximal end of the catheter hub. Such straight catheters are typically used in the United States.
- Once the introducer needle is withdrawn from the catheter, it is a “blood contaminated sharp” and must be properly handled. In recent years, there has been great concern over the contamination of clinicians with a patient's blood and a recognition that “blood contaminated sharps” must be immediately disposed. This concern has arisen because of the advent of currently incurable and fatal diseases, such as Acquired Immunosuppressive Deficiency Syndrome (“AIDS”) and hepatitis, which can be transmitted by the exchange of body fluids from an infected person to another person. Thus, contact with the body fluid of an AIDS or hepatitis infected person must be avoided to prevent the transmission of such diseases to a healthy person. As noted above, if an introducer needle has been used to place a catheter in the vein of an AIDS or hepatitis infected person, the introducer needle is a vehicle for the transmission of the disease. Although clinicians are aware of the need to properly handle “blood contaminated sharps”, unfortunately in certain medical environments, such as emergency situations or as a result of inattention or neglect, needlesticks with contaminated introducer needles still occur.
- As a result of the problem of accidental needlesticks by “blood contaminated sharps”, various needle shields have been developed. Generally, such needle shields work for their intended purpose but could be improved. For example, some needle shields are bulky, difficult to use or require special features or techniques to be operative or are ergonomically uncomfortable for the clinician to use. In addition, some needle shields cannot be used with both ported and straight catheters or would require a significant change in technique by the clinician in order to be used in both ported and straight catheters. Furthermore, certain needle shields prevent access through the introducer needle to the blood vessel during venipuncture.
- It is therefore an object of this invention to provide a needle shield that is compact.
- It is another object of this invention to provide a needle shield that is simple and easy to use.
- It is still another object of this invention to provide a needle shield that requires no special features or technique to be operative.
- It is yet another object of this invention to provide a needle shield that is ergonomically comfortable for the clinician to use.
- It is a further object of this invention to provide a needle shield that can be used with both ported and straight catheters so that the clinician does not need to change her insertion technique.
- It is yet a further object of this invention to provide a needle shield that will allow access through the introducer needle to the blood vessel during venipuncture.
- The catheter and introducer needle assembly with the needle shield and tether of this invention includes a catheter having a distal end and a proximal end connected to the distal end of a catheter hub. The introducer needle has a sharp distal tip and a proximal end connected to the distal end of a needle hub. A flashback chamber is defined in the needle hub. A vented plug may be located in the open proximal end of the flashback chamber to allow air to escape from the flashback chamber when blood enters the flashback chamber from the introducer needle. When the vented plug is removed during venipuncture, the clinician can gain access to the blood vessel through the introducer needle. The catheter is coaxially disposed over the introducer needle so the sharp distal tip of the introducer needle is distal of the distal end of the catheter.
- The needle shield is located substantially between the catheter and the needle hub and defines a longitudinally extending passage through which the introducer needle extends. The needle shield may include some barrier or other mechanism that prevents the sharp distal tip of the needle from being moved distally with respect to the needle shield after the sharp distal tip of the needle has been withdrawn into the needle shield. This prevents the sharp distal tip of the needle from being reexposed once it has been withdrawn into the needle shield.
- The needle shield is connected to the needle hub by a tether that prevents the needle shield from being moved distally past the sharp distal tip of the needle once the needle has been proximally withdrawn into the needle shield. The combination of the barrier or other mechanism associated with the needle shield and the tether prevents distal movement of the needle with respect to the needle shield. This ensures that the sharp distal tip of the needle remains trapped in the needle shield after the needle has been withdrawn proximally into the needle shield after use.
- The tether is folded over itself to form a plurality of pleats like an accordion. Each pleat or fold defines a central opening therein to allow the needle to extend through each pleat or fold no matter whether the tether is completely extended or completely folded with the needle shield adjacent to the needle hub. Because the tether can be folded into a small space so it is located between the needle shield and the needle hub, the overall device is compact. This makes the overall device easier to control by the clinician. In addition, the pleated configuration of the tether allows the clinician to better control the action of the needle shield. The tether is connected to the needle hub and the needle shield by a variety of mechanisms, such as by an adhesive, by heat-sealing or by mechanical engagement.
- The preferred embodiments are illustrated in the drawings in which like reference numerals refer to like elements and in which:
- FIG. 1 is a perspective view of a ported catheter and introducer needle assembly with the needle shield and tether of this invention prior to use;
- FIG. 2 is a perspective view of a ported catheter and introducer needle assembly with the needle shield and tether of this invention after the needle has been withdrawn from the catheter into the needle shield and the needle shield has been removed from the catheter hub;
- FIG. 3 is a top plan view of a ported catheter and introducer needle assembly with the needle shield and tether of this invention prior to use;
- FIG. 4 is a top plan view of a ported catheter and introducer needle assembly with the needle shield and tether of this invention after the needle has been withdrawn from the catheter into the needle shield and the needle shield has been removed from the catheter hub;
- FIG. 5 is an exploded bottom perspective view in partial cross section and partially in phantom of a portion of the needle shield, tether and the needle hub illustrating one method of connecting the tether to the needle shield and the needle hub;
- FIG. 6 is a bottom perspective view in partial cross section and partially in phantom of a portion of the needle shield, tether and the needle hub illustrating one method of connecting the tether to the needle shield and the needle hub;
- FIG. 7 is a cross sectional view of a portion of the introducer needle assembly showing the needle shield and tether prior to use and attached to a catheter hub;
- FIG. 8 is a cross sectional view of a portion of the introducer needle assembly showing the needle shield and tether after the sharp distal tip of the introducer needle has been withdrawn into the needle shield and the needle shield has been removed from the catheter hub;
- FIG. 9 is a perspective view of a straight catheter and introducer needle assembly with the needle shield and tether of this invention prior to use;
- FIG. 10 is a bottom perspective view of the needle shield, tether and the needle hub where the needle shield is adjacent to the needle hub illustrating a second method of connecting the tether to the needle hub with the proximal most pleat of the tether disengaged from the needle hub;
- FIG. 11 is a bottom perspective view of the needle shield, tether and the needle hub where the needle shield is adjacent to the needle hub illustrating a second method of connecting the tether to the needle hub with the proximal most pleat of the tether engaged with the needle hub; and
- FIG. 12 is a bottom perspective view of introducer needle assembly with the needle shield and tether of this invention after the needle has been withdrawn from the catheter into the needle shield and the needle shield has been removed from the catheter hub illustrating a second method of connecting the tether to the needle hub.
- As used herein, the term “proximal” refers to a location on the catheter and introducer needle assembly with the needle shield and tether of this invention that is closest to the clinician using the device and farthest from the patient in connection with whom the device is used when the device is used in its normal operation. Conversely, the term “distal” refers to a location on the catheter and introducer needle assembly with the needle shield and tether of this invention that is farthest from the clinician using the device and closest to the patient in connection with whom the device is used when the device is used in its normal operation.
- The catheter and introducer needle assembly of this invention is identified generally by the numeral10. It includes a
catheter assembly 20 and anintroducer needle assembly 30 that includes aneedle shield 40 and atether 44. -
Catheter assembly 20 includes acatheter 21 that has a proximal end and a distal end. Acatheter hub 24 is affixed to the proximal end ofcatheter 21. Suitable materials forcatheter 21 include, but are not limited to, thermoplastic resins such as polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP), polyurethane and the like. Preferably,catheter 21 is formed from thermoplastic hydrophilic polyurethane that softens with exposure to physiological conditions present in the patient's body. Suitable materials forcatheter hub 24 include, but are not limited to, thermoplastic polymeric resins such as polycarbonate, polystyrene, polypropylene and the like. -
Catheter hub 24 may include a radially outwardly extendingside port 25, which is useful for connecting a fluid handling device tocatheter 21 for infusing fluids into the patient's blood vessel. See FIG. 1. Preferably,side port 25 extends upwardly away from the patient whencatheter 21 is inserted into the patient. In addition, a pair ofwings 26 may be attached to or integrally formed withcatheter hub 24.Wings 26 are useful to stabilizecatheter 21 in the patient and provide a surface that facilitates taping ofcatheter assembly 20 to the patient to fixcatheter 21 properly in the patient's vasculature. - Although, the majority of the description of catheter and
introducer needle assembly 10 of this invention is directed to a catheter having a side port, it is to be understood that this invention can also be used with a straight catheter. See for example, FIG. 9. - A
cover 27 may be used to covercatheter 21 and theintroducer needle 31 prior to use. Preferably cover 27 is formed from a hard polymeric material such as thermoplastic polymeric resins, which include polycarbonate, polystyrene, polypropylene and the like. Of course other materials may also be used forcover 27. -
Introducer needle assembly 30 includesintroducer needle 31 having a sharp distal tip defined by a bevel. The proximal end ofintroducer needle 31 is connected to aneedle hub 34.Introducer needle 31 is preferably formed from stainless steel.Needle hub 34 can include an integrated flashback chamber having an open proximal end.Needle hub 34 is preferably formed from the same types of materials that are used to formcatheter hub 24. Preferably, the open proximal end ofneedle hub 34 is closed to fluid flow by a ventedplug 35 which allows air but not fluid to flow therethrough. This facilitates blood flow into the flashback chamber but prevents blood from leaking out. - Vented
plug 35 may be removably connected to the open proximal end ofneedle hub 34. This allows a clinician to gain access to the patient's blood vessel during venipuncture. In this way, a syringe could be attached to the open proximal end ofneedle hub 34 for aspiration during insertion of catheter andintroducer needle assembly 10. -
Needle hub 34 may also include aradially extending tab 36, which may be grasped in combination withside port 25 to facilitate insertion ofassembly 10 into the patient.Tab 36 may also be useful for withdrawingintroducer needle 31 fromcatheter 21 aftercatheter 21 has been properly located in the patient's vasculature. - In addition,
needle hub 34 may include a pair of longitudinally extendingfingers 39. Thesefingers 39 frictionally engageneedle shield 40. In this way,needle hub 34 is held in place adjacent tocatheter hub 24 so that the sharp distal tip ofintroducer needle 31 extends distally of the distal end ofcatheter 21. The proximally directed force needed to overcome the frictional engagement betweenfingers 39 andneedle shield 40 is less than the proximally directed force needed to overcome the removable connection betweenneedle shield 40 andcatheter hub 24. - As noted above,
introducer needle assembly 30 also includesneedle shield 40. Likecatheter hub 24 andneedle hub 34, suitable materials forneedle shield 40 include, but are not limited to, thermoplastic polymeric resins such as polycarbonate, polystyrene, polypropylene and the like.Needle shield 40 includesmain body portion 41, which defines alongitudinally extending passage 42 therethrough.Longitudinally extending passage 42 allowsintroducer needle 31 to extend longitudinally throughmain body portion 41. The diameter of longitudinally extendingpassage 42 is slightly larger than the diameter of the main portion ofintroducer needle 31. This allows the main portion ofintroducer needle 31 to easily pass through longitudinally extendingpassage 42. - An
annular lip 43 is located along the distal portion of longitudinally extendingpassage 42. Preferably,lip 43 is integrally formed withneedle shield 40 and contacts the main portion ofintroducer needle 31. In this way,lip 43 acts as a fluid seal along the main portion ofintroducer needle 31. During venipuncture, blood flow betweenintroducer needle 31 andneedle shield 40 is minimized to minimize blood leakage from the device. - A
transverse barrier 49 located inneedle shield 40 to act as a barrier to reexposure of the sharp distal tip ofintroducer needle 31 after it has been withdrawn intomain body portion 41.Transverse barrier 49 is preferably formed as an integral member from a resilient metal, such as stainless steel. Preferably, transverse barrier is formed as a generally cylindricalmain body portion 49 b with twolips 49 a in the configuration of a duckbill extending generally proximally from the distal end ofmain body portion 49 b. The longitudinal dimension ofmain body portion 49 b andlips 49 a can be any value but preferably,main body portion 49 b is longer thanlips 49 a. This relationship facilitates the manufacture of this device and makes for a more robust design. - Prior to use,
lips 49 a extend toward the proximal end ofintroducer needle 31 and generally parallel to the main body portion ofintroducer needle 31. See FIG. 7. After proper placement ofcatheter 21 into a patient's blood vessel,lips 49 a ride along the main body portion ofintroducer needle 31 whenintroducer needle 31 is being withdrawn fromcatheter 21. Once the sharp distal tip ofintroducer needle 31 is withdrawn to a position proximal oflips 49 a, the resilient nature oflips 49 a causes them to return to a position that is transverse to introducerneedle 31. The configuration oflips 49 a as shown in FIG. 8 prevents reexposure of the sharp distal tip that could occur ifintroducer needle 31 were thereafter moved distally with respect toneedle shield 40. See FIG. 8. - Other types of transverse barriers could also be used. For example, a transverse barrier having a single arm could be used in place of the pair of
lips 49 a forming a duckbill as described above. -
Main body portion 41 also includes a plurality of longitudinally extendingfingers 47.Fingers 47 engagecatheter hub 24 to holdintroducer needle assembly 30 together withcatheter assembly 20. Thus, asneedle hub 34 is moved proximally with respect tocatheter hub 24,needle shield 40 remains adjacent tocatheter hub 24. As described in more detail below,tether 44 has a length that maintains the sharp distal tip ofintroducer needle 31 inmain body portion 41 of needle shield whentether 44 is fully extended. Thus, once the sharp distal tip ofintroducer needle 31 is moved intomain body portion 41 ofneedle shield 40, any additional proximally directed movement applied toneedle hub 24 will overcome the friction force betweenfingers 47 andcatheter hub 24. In this way,needle shield 40 can be removed fromcatheter hub 24. If desired,main body portion 41 may be configured so that the exterior surface of the distal portion ofmain body portion 41 frictionally engages the interior surface ofcatheter hub 24 to help holdneedle shield 40 withcatheter hub 24. -
Fingers 47 may also include radially inwardly directedprojections 48.Projections 48 are sized to mechanically engagecatheter hub 24 by a snap fit. Ifprojections 48 are used, the force needed to removemain body portion 41 fromcatheter hub 24 may be more precisely controlled than ifonly fingers 47 or a friction fit are used. Once the proper proximally directed force is applied tomain body portion 41,projections 48override catheter hub 24 andmain body portion 41 can be removed fromcatheter hub 24. Again,tether 44 maintainsmain body portion 41 in the proper location so that the sharp distal tip ofintroducer needle 31 is safely located withinmain body portion 41 ofneedle shield 40. -
Tether 44 has a length that is comparable to the exposed length ofintroducer needle 31. This length maintains the sharp distal tip ofintroducer needle 31 inmain body portion 41 ofneedle shield 40 whentether 44 is fully extended.Tether 44 is folded over itself to form a plurality ofpleats 44 a like an accordion. Eachpleat 44 a defines acentral opening 45 therein to allowintroducer needle 31 to extend through eachpleat 44 a whethertether 44 is completely extended, see FIG. 4, or completely folded withmain body portion 41 ofneedle shield 40 adjacent toneedle hub 34, see FIG. 3. By formingtether 44 in this way, a compact design is achieved for catheter andintroducer needle assembly 10. -
Tether 44 can be made of any relatively stiff yet flexible material. However, polyethylene terephthalate (PET) is the preferred material. One benefit of using PET is that it is relatively stiff so that when it is folded into a pleated or an accordion-like configuration, it provides a slight biasing force to help maintaintether 44 in the completely extended position. This in turn aids in maintainingneedle shield 40 in position over the sharp distal tip ofintroducer needle 31. -
Tether 44 can be connected toneedle hub 34 andneedle shield 40 by any standard means, such as by an adhesive or by heat-sealing. Preferably,tether 44 is connected toneedle hub 34 and needle shield 4o through mechanical engagement as well as by an adhesive. For example, aslot 37 may be formed along a distal portion ofneedle hub 34 where one end oftether 44 can be placed.Slot 37 thus provides an edge along which aproximal pleat 44 b oftether 44 can mechanically engageneedle hub 34 to preventtether 44 from being removed fromneedle hub 34 during use. See FIGS. 5 and 6. Alternatively, a radially extendingbutton 32 defining aslot 33 therein can be formed along a bottom portion ofneedle hub 34. One end oftether 44 can be located aboutbutton 32 so thatslot 33 provides an edge along which aproximal pleat 44 b can mechanically engageneedle hub 34. See FIGS. 10-12. As tomain body portion 41, adistal pleat 44 c can be looped aroundmain body portion 41 ofneedle shield 40 to preventtether 44 from being removed frommain body portion 41 during use. See FIGS. 5 and 6. Although it is preferred to havetether 44 connected toneedle hub 34 andneedle shield 40 as described above, it is to be understood that other well known methods for joining two pieces together may be used. - The combination of the material for
tether 44, the pleated configuration oftether 44, and the specific connection ofdistal pleat 44 c tomain body portion 41 causes the longitudinal axis ofmain body portion 41 to form an oblique angle with respect tointroducer needle 31 whentether 44 is fully extended. This helps to ensure that the sharp distal tip ofintroducer needle 31 remains trapped insideneedle shield 40 ifintroducer needle 31 were to subsequently be moved distally with respect tomain body portion 41 and prevents the sharp distal tip ofintroducer needle 31 from being reexposed after use. - In order to place
catheter 21 into a patient's blood vessel, the clinician substantially longitudinally alignsintroducer needle 31 andcatheter 21 with the target blood vessel. The bevel defining the sharp distal tip ofintroducer needle 31 should be facing substantially away from the skin surface during venipuncture. The clinician insertsintroducer needle 31 andcatheter 21 at a shallow angle, preferably less than about 35 degrees, into the skin so that the sharp distal tip ofintroducer needle 31 enters the target blood vessel. The clinician then preferably observes a blood flashback in the flashback chamber. - After confirming placement of
introducer needle 31 andcatheter 21 in the target blood vessel, the clinician advancescatheter 21 distally axially alongintroducer needle 31 into position in the blood vessel. After proper placement ofcatheter 21 is achieved, the clinician places a finger from her other hand on the patient's skin over the blood vessel distal of distal end ofcatheter 21 and the sharp distal tip ofintroducer needle 31. By placing her finger on the patient's skin and applying sufficient pressure on the skin, the clinician thereby minimizes blood flow throughcatheter 21. The clinician then withdrawsintroducer needle 31 fromcatheter 21 by pullingneedle hub 34 in a proximal direction. Once sharp distal tip ofintroducer needle 31 is located withinmain body portion 41 ofneedle shield 40, continued proximal movement ofneedle hub 34 will result in a force sufficient to overcome theforce holding fingers 47 tocatheter hub 24 so thatmain body portion 41 can be removed fromcatheter hub 24. Thereafter, the clinician may attach any desired fluid-handling device to sideport 25, if a ported catheter is used, or tocatheter hub 24, if a straight catheter is used, and commence the planned treatment.Main body portion 41 ofneedle shield 40 with the sharp distal tip ofintroducer needle 31 shielded therein may then be disposed of according to the facility's disposal protocol. - Thus, it is seen that a catheter and introducer needle assembly with a needle shield and tether is provided that is compact, simple and easy to use, that requires no special features or technique to be operative, that is ergonomically comfortable for the clinician to use, that can be used with both ported and straight catheters without any change in technique by the clinician, and that allows access through the introducer needle to the blood vessel during venipuncture.
Claims (10)
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1338299A1 (en) * | 2002-02-26 | 2003-08-27 | Becton, Dickinson and Company | Compact needle shielding device |
US20050119627A1 (en) * | 2003-12-01 | 2005-06-02 | Becton, Dickinson And Company | Selectively passive forward shielding medical needle device |
AU783791B2 (en) * | 2001-02-16 | 2005-12-08 | Becton Dickinson & Company | Compact needle shielding device |
US8486024B2 (en) | 2011-04-27 | 2013-07-16 | Covidien Lp | Safety IV catheter assemblies |
US8512295B2 (en) | 2010-08-19 | 2013-08-20 | West Pharmaceutical Services, Inc. | Rigid needle shield |
US8628497B2 (en) | 2011-09-26 | 2014-01-14 | Covidien Lp | Safety catheter |
US8715250B2 (en) | 2011-09-26 | 2014-05-06 | Covidien Lp | Safety catheter and needle assembly |
US8834422B2 (en) | 2011-10-14 | 2014-09-16 | Covidien Lp | Vascular access assembly and safety device |
US8939938B2 (en) | 2006-10-12 | 2015-01-27 | Covidien Lp | Needle tip protector |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7125397B2 (en) * | 1997-08-20 | 2006-10-24 | B. Braun Melsungen Ag | Protective device for an injection needle |
US6749588B1 (en) | 1998-04-09 | 2004-06-15 | Becton Dickinson And Company | Catheter and introducer needle assembly with needle shield |
CA2282989C (en) * | 1999-09-21 | 2006-07-04 | Royal Group Technologies Limited | Window frame and method of fabricating same |
US6558354B1 (en) * | 2000-08-04 | 2003-05-06 | Becton Dickinson And Company | Adapter for connecting an introducer needle assembly to a catheter introducer |
US6761706B2 (en) * | 2001-04-04 | 2004-07-13 | Patricia B. Vaillancourt | Needle guard |
US6527747B2 (en) * | 2001-05-25 | 2003-03-04 | Becton Dickinson And Company | Introducer needle assembly having a tethered needle shield |
JP4333363B2 (en) * | 2001-08-17 | 2009-09-16 | ベクトン・ディキンソン・アンド・カンパニー | Blood collection assembly |
US6984223B2 (en) | 2001-11-13 | 2006-01-10 | Becton, Dickinson And Company | Needle safety device |
CA2422307A1 (en) * | 2002-03-20 | 2003-09-20 | Stefanie Livanos | Blood collection device |
US6918891B2 (en) * | 2002-03-21 | 2005-07-19 | Becton Dickinson Co | Safety device |
EP1381175A1 (en) * | 2002-07-11 | 2004-01-14 | Agilent Technologies, Inc. - a Delaware corporation - | Apparatus and method for data tag signal recovery |
US20050107226A1 (en) * | 2003-07-03 | 2005-05-19 | Monda Alan J. | Encased resistance cable portable exercise apparatus |
FR2867082B1 (en) | 2004-03-02 | 2006-05-26 | Vygon | TILTING DEVICE FOR POSITIONING A CANNULA INTO A VEIN |
US20050251092A1 (en) * | 2004-05-10 | 2005-11-10 | Becton, Dickinson And Company | Needle assembly with tether |
US7704229B2 (en) * | 2005-02-03 | 2010-04-27 | Medtronic Minimed, Inc. | Insertion device |
US20070060905A1 (en) * | 2005-08-16 | 2007-03-15 | Becton Dickinson And Company | Needle tether |
US20070060890A1 (en) * | 2005-09-08 | 2007-03-15 | Cuppy Medical Products, Inc. | Catheter safety tube needle retraction system |
US7722569B2 (en) * | 2006-05-22 | 2010-05-25 | Becton, Dickinson And Company | Catheter assembly with tip shield closure |
US9056188B2 (en) * | 2006-11-22 | 2015-06-16 | Becton, Dickinson And Company | Needle shielding flag structures |
US9220871B2 (en) * | 2006-11-22 | 2015-12-29 | Becton, Dickinson And Company | Needle shielding pawl structures |
US8057431B2 (en) | 2006-12-21 | 2011-11-15 | B. Braun Melsungen Ag | Hinged cap for needle device |
US7806869B2 (en) * | 2007-03-29 | 2010-10-05 | Anders Bengt Erik Nilsson | Blood exposure prevention in vascular access devices |
WO2009009799A1 (en) * | 2007-07-12 | 2009-01-15 | Volcano Corporation | Catheter for in vivo imaging |
WO2009034579A1 (en) * | 2007-09-06 | 2009-03-19 | Manoj Kumar Maan | Safety i. v. cannula |
US8858503B2 (en) * | 2007-12-21 | 2014-10-14 | Becton, Dickinson And Company | Tip shield with gripping surfaces and guard features |
US20100152646A1 (en) * | 2008-02-29 | 2010-06-17 | Reshma Girijavallabhan | Intravitreal injection device and method |
JP5352579B2 (en) * | 2008-03-31 | 2013-11-27 | テルモ株式会社 | Indwelling needle assembly |
US8357121B2 (en) * | 2009-03-26 | 2013-01-22 | Becton, Dickinson And Company | Systems and methods for providing a safety integrated catheter with universal grip |
WO2012075402A1 (en) | 2010-12-02 | 2012-06-07 | Erskine Medical Llc | Needle shield assembly with hub engagement member for needle device |
CN103354754B (en) * | 2010-12-02 | 2016-02-24 | 厄斯金医学有限公司 | For the relieving mechanism used together with pin masking device |
CA2828741C (en) | 2011-04-07 | 2016-06-07 | Erskine Medical Llc | Needle shielding device |
US8747360B2 (en) * | 2011-12-07 | 2014-06-10 | Becton, Dickinston And Company | Adhesive backed IV catheter with auto release liner |
US9415190B2 (en) * | 2013-02-13 | 2016-08-16 | Interrad Medical, Inc. | Systems and methods for anchoring medical devices |
US10500376B2 (en) | 2013-06-07 | 2019-12-10 | Becton, Dickinson And Company | IV catheter having external needle shield and internal blood control septum |
US20150238733A1 (en) * | 2014-02-25 | 2015-08-27 | Mohamad Yasin bin Abdulla | Catheter devices and related methods |
CN106456904A (en) | 2014-04-18 | 2017-02-22 | 贝克顿·迪金森公司 | Needle capture safety interlock for catheter |
US11511052B2 (en) | 2014-11-10 | 2022-11-29 | Becton, Dickinson And Company | Safety IV catheter with V-clip interlock and needle tip capture |
GB2529270B (en) | 2015-01-02 | 2016-07-27 | Becton Dickinson Co | Safety intravenous catheter with friction-based retention and disabling feature |
EP3576829B1 (en) * | 2018-03-05 | 2021-01-06 | Poly Medicure Limited | Intravenous catheter assembly |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4725267A (en) | 1987-05-06 | 1988-02-16 | Vaillancourt Vincent L | Post-injection needle sheath |
US4790828A (en) | 1987-08-07 | 1988-12-13 | Dombrowski Mitchell P | Self-capping needle assembly |
US4935013A (en) | 1988-02-23 | 1990-06-19 | Habley Medical Technology Corporation | Collapsible needle cover |
US4846809A (en) | 1988-02-29 | 1989-07-11 | Winifred Sims | Needle tip protective device |
US4978344A (en) | 1988-08-11 | 1990-12-18 | Dombrowski Mitchell P | Needle and catheter assembly |
US4955866A (en) | 1988-10-19 | 1990-09-11 | University Of Florida | Hypodermic needle recapping device |
US5059180A (en) | 1989-11-21 | 1991-10-22 | Mclees Donald J | Automatic needle tip guard |
US5051109A (en) | 1990-07-16 | 1991-09-24 | Simon Alexander Z | Protector for catheter needle |
SE9101102D0 (en) | 1991-04-11 | 1991-04-11 | Viggo Spectramed Ab | NEEDLE PROTECTION DEVICE |
GB9120416D0 (en) | 1991-09-25 | 1991-11-06 | Sterimatic Holdings Ltd | Catheter placement units |
CA2131323A1 (en) | 1992-03-10 | 1993-09-16 | Thomas C. Kuracina | Medical injection devices with safety features |
WO1994000172A1 (en) | 1992-06-22 | 1994-01-06 | Wong Henry C C | Automatic disposable needle guard |
US5549570A (en) * | 1993-01-27 | 1996-08-27 | Rogalsky; Alena | Medical needle unit |
CA2127206A1 (en) * | 1993-07-23 | 1995-01-24 | Charles W. Daugherty | Self contained needle and shield |
US5419766A (en) | 1993-09-28 | 1995-05-30 | Critikon, Inc. | Catheter with stick protection |
US5348544A (en) | 1993-11-24 | 1994-09-20 | Becton, Dickinson And Company | Single-handedly actuatable safety shield for needles |
US5478313A (en) | 1994-08-18 | 1995-12-26 | White; Jennifer A. | Needle shield |
US5549571A (en) * | 1995-04-18 | 1996-08-27 | Sak; Robert F. | Butterfly assembly with retractable needle cannula |
US5569202A (en) | 1995-06-07 | 1996-10-29 | Johnson & Johnson Medical, Inc. | Catheter needle tip protector |
US5685860A (en) | 1995-06-07 | 1997-11-11 | Johnson & Johnson Medical, Inc. | Self-capping needle assembly |
US5879337A (en) | 1997-02-27 | 1999-03-09 | Injectimed, Inc. | Needle tip guard for hypodermic needles |
IL118223A0 (en) | 1996-05-12 | 1996-09-12 | Popov Sergey | Catheter placement unit |
SE507732C2 (en) | 1996-11-04 | 1998-07-06 | Hydracine Develop Ab | Infusion cannula with needle guard |
JP3835882B2 (en) | 1997-03-31 | 2006-10-18 | テルモ株式会社 | Indwelling needle assembly |
US5910132A (en) | 1998-01-06 | 1999-06-08 | B. Braun Medical Inc. | Safety IV catheter guard |
US5957892A (en) | 1998-03-12 | 1999-09-28 | Specialized Health Products, Inc. | Safety catheter insertion apparatus and methods |
-
2000
- 2000-01-18 US US09/483,914 patent/US6234999B1/en not_active Expired - Lifetime
-
2001
- 2001-01-16 WO PCT/US2001/001286 patent/WO2001052929A2/en active IP Right Grant
- 2001-01-16 EP EP01942572A patent/EP1248658A2/en not_active Withdrawn
- 2001-01-16 JP JP2001552975A patent/JP4689922B2/en not_active Expired - Lifetime
- 2001-01-16 AU AU29486/01A patent/AU777939B2/en not_active Expired
- 2001-02-16 US US09/785,103 patent/US6425884B1/en not_active Expired - Lifetime
Cited By (13)
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AU783791B2 (en) * | 2001-02-16 | 2005-12-08 | Becton Dickinson & Company | Compact needle shielding device |
EP1338299A1 (en) * | 2002-02-26 | 2003-08-27 | Becton, Dickinson and Company | Compact needle shielding device |
US20050119627A1 (en) * | 2003-12-01 | 2005-06-02 | Becton, Dickinson And Company | Selectively passive forward shielding medical needle device |
EP1537890A1 (en) * | 2003-12-01 | 2005-06-08 | Becton, Dickinson and Company | Medical needle device with automatic shielding |
US8939938B2 (en) | 2006-10-12 | 2015-01-27 | Covidien Lp | Needle tip protector |
US9084854B2 (en) | 2010-08-19 | 2015-07-21 | West Pharmaceutical Services, Inc. | Rigid needle shield |
US8512295B2 (en) | 2010-08-19 | 2013-08-20 | West Pharmaceutical Services, Inc. | Rigid needle shield |
US8926563B2 (en) | 2011-04-27 | 2015-01-06 | Covidien Lp | Safety IV catheter assemblies |
US8486024B2 (en) | 2011-04-27 | 2013-07-16 | Covidien Lp | Safety IV catheter assemblies |
US8715250B2 (en) | 2011-09-26 | 2014-05-06 | Covidien Lp | Safety catheter and needle assembly |
US8628497B2 (en) | 2011-09-26 | 2014-01-14 | Covidien Lp | Safety catheter |
US9375552B2 (en) | 2011-09-26 | 2016-06-28 | Covidien Lp | Safety needle assembly |
US8834422B2 (en) | 2011-10-14 | 2014-09-16 | Covidien Lp | Vascular access assembly and safety device |
Also Published As
Publication number | Publication date |
---|---|
US6425884B1 (en) | 2002-07-30 |
US6234999B1 (en) | 2001-05-22 |
JP4689922B2 (en) | 2011-06-01 |
AU777939B2 (en) | 2004-11-04 |
JP2003520109A (en) | 2003-07-02 |
WO2001052929A2 (en) | 2001-07-26 |
AU2948601A (en) | 2001-07-31 |
EP1248658A2 (en) | 2002-10-16 |
WO2001052929A3 (en) | 2002-01-17 |
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