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WO1997042989A1 - Dispositif de placement d'un catheter - Google Patents

Dispositif de placement d'un catheter Download PDF

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Publication number
WO1997042989A1
WO1997042989A1 PCT/IL1997/000155 IL9700155W WO9742989A1 WO 1997042989 A1 WO1997042989 A1 WO 1997042989A1 IL 9700155 W IL9700155 W IL 9700155W WO 9742989 A1 WO9742989 A1 WO 9742989A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
catheter
placement device
catheter placement
hub
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.)
Ceased
Application number
PCT/IL1997/000155
Other languages
English (en)
Inventor
Sergey Popov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO1997042989A1 publication Critical patent/WO1997042989A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • 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
    • 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
    • A61M2005/3249—Means to disalign the needle tip and the distal needle passage 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
    • A61M2005/3247—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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
    • 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 present invention relates generally to apparatus for the placement of catheters in blood vessels by use of a needle, and, particularly, to such apparatus which includes safety devices for preventing accidental pricking of another person by the needle, after withdrawal from a subject.
  • US Patent No. 5,215,528 describes an assembly for introducing a catheter into a blood vessel.
  • the assembly includes a needle hub having a needle secured thereto.
  • the needle includes an elongate shaft having a beveled tip.
  • a portion of the needle shaft adjacent to the tip has a relatively large outside diameter. The shaft diameter of this portion exceeds the diameter, of the shaft portion adjoining the tip and the diameter of the shaft portion extending between the enlarged shaft portion and the needle hub.
  • a catheter is mounted over the shaft of the needle, and includes an inner surface which bears against the enlarged shaft portion.
  • a substantially leak-proof seal is thereby provided between the catheter and the needle shaft.
  • a needle tip cover is slidably mounted to the needle shaft and is engageable with the enlarged portion of the shaft to prevent its removal therefrom.
  • the catheter is releasably mounted to the needle tip cover.
  • the described catheter placement device comprises an introducing needle having a pointed tip for introducing a catheter into a desired position in a patient's body; a needle hub for mounting the needle so that the needle extends through an axial bore in the catheter during introduction of the catheter into the patient's body and so that the needle can subsequently be withdrawn from the catheter bore leaving the catheter in position in the patient's body; and a needle tip protector on the needle for shielding the needle tip when the needle has been withdrawn from the catheter bore.
  • the needle tip protector includes a guard element which is held against a resilient bias in a cocked position to one side of the catheter while the catheter is introduced into the patient's body and which, on subsequent withdrawal of the needle from the catheter bore, is moved laterally by resilient action from the cocked position into a guard position in which it shields the needle tip.
  • the present invention seeks to provide an improved catheter placement device which is characterized by a simplified construction, and improved safety over known devices.
  • a catheter placement device having a catheter unit which includes a catheter for insertion into a blood vessel and having front and rear ends and a longitudinal axis; and catheter hub apparatus attached to the rear end of the catheter; and a needle unit having initial, intermediate and final positions with respect to the catheter unit, in the initial position the needle unit being in operative association with the catheter unit for introduction of the catheter tube into a patient's blood vessel, and in the final position, the needle unit not being in operative association with the catheter unit.
  • the needle unit includes a catheter introduction needle having a longitudinal axis; a needle hub attached to the rear end of the needle and operative to support the needle in the catheter tube, in coaxial alignment therewith, when the needle unit is in the initial position; a needle tip capping element for selectable positioning in overlapping relation with the needle tip, and having front shielding apparatus and lateral shielding apparatus associated therewith; and resilient locking apparatus arranged in force transfer association with the capping element and a predetermined one of the needle hub and the needle.
  • the needle In the initial position of the needle unit, the needle is supported by the needle hub in the catheter tube, such that the needle tip protrudes from the front end of the catheter tube, and the front shielding apparatus is located laterally with respect to the needle in non-overlapping relation with the needle tip, and in response to a rearward withdrawal force applied to the needle hub, the needle is operative to move in a rearward direction relative to the capping element so as to tension the resilient locking apparatus, wherein, as the needle tip moves rearwardly of the capping element, the locking apparatus is operative to cause a relative lateral movement between the needle tip and at least the front shielding apparatus so that the front shielding apparatus intersects with the longitudinal axis of the needle, such that the needle unit is in the intermediate position.
  • the resilient locking apparatus In response to the rearward movement of the needle tip relative to the capping element, the resilient locking apparatus is operative to apply a generally rearward locking force to the capping element, thereby to position the lateral shielding apparatus in the overlapping position with respect to the needle tip, such that the front shielding portion and the lateral shielding portion overlap the needle tip, such that the needle unit is in the final position.
  • the needle unit also includes linkage apparatus associated with the needle hub and the capping element, and operative, in response to the tensioning of the locking apparatus, to apply a lateral displacement force to a predetermined one of the capping element and the needle, thereby causing the relative lateral movement between the needle tip and at least the front shielding apparatus.
  • the linkage apparatus is further operative, when the needle unit is in the intermediate and final positions, to prevent substantial forward movement of the capping element relative to the needle tip.
  • the linkage apparatus includes an elongate linkage element having front and rear ends, wherein the front end is connected to the capping element, and the rear end is associated with the needle hub, and preferably is connected thereto,
  • At least one of the elongate linkage member, the needle hub, and the needle is flexible, preferably resilient, thereby permitting the relative lateral movement between the needle tip and at least the front shielding apparatus.
  • the first lateral shielding portion is rigid
  • the capping element has a generally tubular shape having a front end in which is defined an opening through which the needle extends when the needle unit is in the initial position, and wherein the second lateral shielding portion defines a rearward facing ledge.
  • the elongate linkage element is connected to the capping element at a predetermined lever arm distance from the cover axis such that the tensioning of the locking apparatus gives rise to a rotation of the capping element, thereby to cause the relative lateral movement between the needle tip and at least the front shielding apparatus.
  • the first lateral shielding portion is resilient, and the first shielding portion is operative to urge the second lateral shielding portion so as to apply an inward urging force to the needle when the needle is in the initial position, such that, as the needle tip moves rearwardly of the second lateral shielding portion, the front shielding apparatus and the second lateral shielding portion undergoes a lateral movement relative to the needle tip so that the front shielding apparatus intersects with the longitudinal axis of the needle.
  • the first and second lateral shielding portions define a shielding plane and the needle unit further includes guide apparatus for preventing the needle from moving laterally with respect to the plane.
  • the needle hub has a protruding portion in which is formed a guide opening through which the elongate linkage element extends, and the rear end of the elongate linkage member is arranged for selectable engagement with the needle hub, and includes a resilient portion disposed between the rear end of the linkage member and the needle hub which is operative to elastically resist a rearward withdrawal force and to permit completion of a rearward stroke in the presence of a rearward force of greater magnitude, and which, upon removal of the rearward force, is operative to urge the needle in a generally forward direction, thereby to cause the mutual locking engagement of the needle tip and the capping element.
  • Fig. 1A is a side-sectional view of a catheter placement device, constructed and operative in accordance with a preferred embodiment of the invention, seen in an initial position, prior to placement of the catheter;
  • Figs. 1 B and 1C are further views of the device of Fig. 1A, but wherein the needle and needle hub are shown in a intermediate positions;
  • Fig. 1 D is a side view of a needle unit seen in Figs. 1A-1C, in a final, capped position;
  • Fig. 2 is an enlarged side-sectional view of the capping element seen in Figs. 1A-1D;
  • Fig. 3 is a side view of a capped needle, constructed in accordance with an alternative embodiment of the invention, in which the needle hub is flexible;
  • Fig. 4 is a side-sectional view of a catheter placement device, constructed and operative in accordance with an additional embodiment of the invention, in which the needle is flexible, and wherein the needle and needle hub are shown in a partially withdrawn position;
  • Fig. 5 is a side view of the needle unit of Fig. 4, seen in a capped position after withdrawal from the catheter and catheter hub;
  • Fig. 6 is a side-sectional view of a catheter placement device, constructed and operative in accordance with yet a further embodiment of the invention, in which a linkage element and capping element are provided as an integral, elongate member, and wherein the needle and needle hub are shown in an initial position; and
  • Fig. 7 is a side view of the needle unit of Fig. 6, seen in a capped position after withdrawal from the catheter and catheter hub.
  • a catheter placement device constructed and operative in accordance with a preferred embodiment of the invention.
  • Device 10 has an introducing needle 12, which may be of a conventional type, having a needle tip 14 at its front end, and a needle tip cap or capping element 16, shown in detailed cross-section in Fig. 2, located in association with a rear portion of needle 12, shown at 18 (Fig. 1A). Needle 12 is movable relative to needle tip cap 16 between an initial position, shown in Fig.
  • needle tip 14 protrudes from a front end 19 of catheter 20, in order to provide introduction thereof into a selected blood vessel of a patient's body, and a final position, shown in Fig. 1D. In this position, needle tip 14 is covered by needle tip cap 16.
  • Catheter 20 is attached to a hub 21 , which may be of any known type.
  • cap 16 is tubular shaped, having an interior opening 22, through which needle 12 extends.
  • Cap 16 has a rear opening 24 of a relatively large diameter, and a front shielding portion 26, whose purpose will be understood from the following description.
  • Front shielding portion 26 is formed at the front end of cap 16, in which is also provided an opening 28 of a smaller diameter, typically slightly larger than that of needle 12, so that the needle is just able to pass therethrough.
  • Front shielding portion 26 is formed, as seen, so as to define first and second lateral shielding portions, referenced 30 and 31.
  • first lateral shielding portion 30 is a generally cylindrical side wall of cap 16, while second lateral shielding portion 31 is a truncated generally conical portion terminating in a rearward facing ledge 32. Lateral shielding portions 30 and 31 define therebetween a V-shaped notch 34.
  • front shielding portion 26 is provided to shield or cover needle tip 14, the described V-notch preventing lateral displacement of cap 16 relative to needle tip 14, once the needle tip 14 has become fully engaged therewith.
  • Cap 16 preferably is formed with a flange 38 on its rear end, serving to position cap 16 axially within the catheter hub 21 , and further serving to prevent dislodgment of the cap 16 during a rearward stroke of the needle 12, during withdrawal of the needle from catheter 20, until completion of the rearward stroke. This is described below in greater detail.
  • FIG. 1 D There is also provided apparatus for preventing rear displacement of cap 16 relative to needle 12, when in the position, as seen in Fig. 1 D.
  • This is provided by way of an elongate, flexible linkage element or drawbar 40, attached by its front end 42 to flange 38 of cap 16, and by its rear end 44, to a needle hub 46, which, in turn, is rigidly attached to rear portion 18 of needle 12.
  • the front end 42 of linkage element 40 is anchored to cap 16 at an anchor location 48 which is located eccentrically with respect to the longitudinal axis 50 (Fig. 2) of cap 16.
  • flexible linkage element 40 and cap 16 are formed as an integral molded plastic member, although element 40 may alternatively be formed as a nylon thread or cord element, for example, appropriately fastened to needle hub 46 and cap 16.
  • catheter placement device 10 is as follows:
  • catheter placement device 10 is in the position shown in Fig. 1A, such that needle tip 14 protrudes from the front end 17 of catheter 20.
  • catheter 20 is then introduced into a selected blood vessel using needle 12 as a carrier.
  • needle 12 is withdrawn from catheter 20 by grasping catheter hub 21 in one hand, while exerting a rearward pulling force on the needle 12, via needle hub 46.
  • Application of this rearward force to needle hub 46 causes it to disengage from catheter hub 21, as seen in the drawing, and further causes a gradual longitudinal sliding withdrawal of needle 12 through catheter 20 and through opening 28 of cap 16, while cap 16 is fully retained in its initial position, as seen in Figs. 1A and 1B, by virtue of the frictional engagement between flange 38 and catheter hub 21, in the present example.
  • needle hub 46 and needle 12 continue to be withdrawn linkage element 40 is extended, until it becomes taut, as shown in Figs. 1 B and 1C.
  • linkage element 40 The length of linkage element 40 is such that as it becomes completely extended, the needle tip 14 passes to the rear of ledge 32 in cap 16, as seen in Fig. 1C. Due to the flexibility in linkage element 40, needle 12 is permitted to drop slightly inside cap 16, towards first shielding portion 30, defined by the side wall of cap 16. At this intermediate stage, the pulling force applied to needle 12 and linkage element 40 is of a magnitude that is sufficient to completely withdraw cap 16 from the catheter hub 21, such that the entire needle unit, referenced generally 52, which includes the needle 12, needle hub 46, linkage element 40 and cap 16, becomes completely separated from catheter unit 19, which includes catheter 20 and catheter hub 21.
  • linkage element 40 is made of a resilient material, such that, upon release of the cap from the catheter hub 21, linkage element 40 retracts slightly, thereby applying a "locking force" which causes a locking engagement of needle tip 14 in the V-notch 34 of cap 16.
  • linkage element 40 were not resilient, such that the described locking force were not to be applied, as soon as needle tip 14 passes to the rear side of ledge 32, such that the needle tip drops, a relative longitudinal displacement of either the needle 12 or the cap 16 so as to cause engagement therebetween, would cause needle tip 14 to engage a rearward facing portion of the cap 16, so as to prevent the needle tip 14 from passing forward through the front opening 26.
  • a needle unit referenced generally 152, which is generally similar to that shown and described above in conjunction with Figs. 1A-1 D, and is thus not specifically described again herein except as required for description of differences between needle unit 52 and the needle unit 152. Accordingly, portions of the needle unit 152 having counterpart portions in the embodiment of Figs. 1A-1D, are denoted in Fig. 3 by reference numerals having an additional prefix "1 ,” and are not specifically described again herein.
  • Needle unit 152 is constructed and operates similarly to unit 52 (Figs. 1A-1D), except that, in the present embodiment, a resilient locking force, as described above, is applied by providing needle hub 146 as a flexible, resilient member. This is done by forming needle hub 146 of a suitable polymer material, and, preferably, by providing therein a weakened portion, such as by means of a notch 154, thereby forming an integral hinge. Accordingly, application of a pulling force so as to cause withdrawal of the entire needle unit 152 from the catheter hub (not shown), causes an upper protruding portion 156 of hub 146 to bend forwardly, as seen in outline in Fig. 3. A subsequent removal of the pulling force enables upper hub portion 156 to straighten, thereby applying a rearward force to cap 116 so as to force it into locking engagement with needle tip 114.
  • a catheter placement device 210 having a needle unit 252, shown in Fig. 5 in a fully withdrawn, locked position.
  • Device 210 is generally similar to that shown and described above in conjunction with Figs. 1A-1 D, and is thus not specifically described again herein except as required for description of differences between needle unit 252 and the needle unit 52 (Figs. 1A-1 D). Accordingly, portions of the catheter placement device 210 having counterpart portions in the embodiment of Figs. 1A-1D, are denoted in Figs. 4 and 5 by reference numerals having an additional prefix "2,” and are not specifically described again herein, except as necessary to understand the present embodiment.
  • Device 210 and needle unit 252 are constructed and operate similarly to device 10 and needle unit 52 (Figs. 1A-1D), except that, in the present embodiment, a resilient locking force, as described above, is applied by providing forming needle 212 from a flexible material, such as a suitable polymer. Accordingly, application of a pulling force so as to cause withdrawal of the entire needle unit 252 from catheter hub 221 , as shown in Fig. 4, causes needle 212 to flex, as shown. Subsequent removal of the pulling force enables a partial straightening of needle 212, thereby bringing the cap 216 and needle tip 214 into locking engagement.
  • a resilient locking force as described above
  • needle 212 flexes upon withdrawal, and the extent to which it is permitted to straighten, depend on the length of linkage element 240 which, in the present embodiment, is flexible, but has no significant elasticity. In the present embodiment, due to the fact that needle 212, itself, flexes, and the locking force is thus applied therealong, and due to the relative shortness of linkage element 240, it may not be necessary to form a V-notch in the rearward facing surface 230 (Fig. 5) of cap 216, although it is preferable.
  • a catheter placement device referenced generally 310, constructed and operative in accordance with yet a further embodiment of the present invention.
  • Components of the illustrated device 310 having counterpart components that have been shown and described hereinabove in conjunction with any of devices 10, 110 or 210, are denoted in Figs. 6 and 7 by similar reference numerals, but with the addition of a prefix "3", and are not specifically described again herein.
  • Catheter placement device 310 is provided with a movably mounted flexible linkage rod or drawbar 360 which, as opposed to previous embodiments of the invention described above, is not attached to needle hub 346. Rather, needle hub 346 has a protrusion 362 having a guide opening 364 formed therein which is large enough to permit free sliding motion of rod 360 therethrough. There is also provided a resilient urging portion 366, which, in the present embodiment, is provided as an integral portion of linkage rod 360.
  • a front portion 368 of rod 360 has a wavelike configuration, and has formed therein openings 370, 372 and 374, which serve as a guide for needle 312.
  • a front portion 376 of rod 360 is configured as an integral cap portion, and defines a first, resilient, lateral shielding portion 330 and a second lateral shielding portion 331 , which form between them a rear facing V-notch 334, which serves for selectable engagement and locking of needle tip 314.
  • Rod 360 is formed so that in an at rest position, front portion 376 extends generally inwardly, such that, once rod 360, needle 312 and needle hub 346 are assembled, and in an initial position, ledge 332 is in generally inwardly urging abutting engagement with a rear portion 318 of the needle 312.
  • rod 360 is initially locked in an axial opening 378 of catheter hub 321, by virtue of frictional engagement of outward facing rod portions 380 and 382 with an inward-facing surface of catheter hub 321.
  • rod 360, front portion 376, and resilient urging portion 366 are made integrally from a single portion of flexible metal, or from a suitable plastic molding.
  • needle hub 346 moves rearwardly along rod 360 until hub protrusion 362 engages a front portion 384 of urging portion 366.
  • the needle tip 314 is still located forwardly of front portion 376, such that ledge 332 thereof presses laterally against a side portion of needle 312, under the urging force of resilient first lateral shielding portion 330.
  • a force has to be applied so as to overcome the forward urging force providing by urging portion 366 onto needle hub protrusion 362.
  • front portion 384 of urging portion 366 extends so as to slightly recover its original shape, thereby applying a forward force onto the needle hub 346.
  • This force is transferred to needle 312, causing a forward displacement thereof relative to ledge 332, thereby locking together needle tip 314 and rod front portion 376.
  • the first and second lateral shielding portions 330 and 331 define a shielding plane, and openings 370, 372 and 374, formed in front portion 368 of rod 360, and which serve as a guide for needle 312, serve also to prevent needle 312 from moving laterally with respect to the shielding plane, thereby preventing needle tip 314 from being accidentally released sideways, once the needle tip 314 and needle unit 352 are locked in a final position.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

Cette invention se rapporte à un dispositif (10) de placement d'une cathéter, qui comprend une unité cathéter constituée par un cathéter (20) destiné à être introduit dans un vaisseau sanguin, une embase de cathéter (21) fixée au cathéter, une unité à aiguille constituée par une aiguille (12) introduite dans l'unité cathéter, et une embase d'aiguille (46) fixée à l'aiguille, laquelle est protégée contre tout retrait de l'unité cathéter.
PCT/IL1997/000155 1996-05-12 1997-05-11 Dispositif de placement d'un catheter Ceased WO1997042989A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL11822396A IL118223A0 (en) 1996-05-12 1996-05-12 Catheter placement unit
IL118223 1996-05-12

Publications (1)

Publication Number Publication Date
WO1997042989A1 true WO1997042989A1 (fr) 1997-11-20

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ID=11068858

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1997/000155 Ceased WO1997042989A1 (fr) 1996-05-12 1997-05-11 Dispositif de placement d'un catheter

Country Status (2)

Country Link
IL (1) IL118223A0 (fr)
WO (1) WO1997042989A1 (fr)

Cited By (27)

* Cited by examiner, † Cited by third party
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US6117108A (en) * 1997-08-20 2000-09-12 Braun Melsungen Ag Spring clip safety IV catheter
US6234999B1 (en) 2000-01-18 2001-05-22 Becton, Dickinson And Company Compact needle shielding device
US6595955B2 (en) 2001-03-15 2003-07-22 Specialized Health Products, Inc. Safety shield for medical needles
US6902546B2 (en) 2001-03-15 2005-06-07 Specialized Health Products, Inc. Safety shield for medical needles
US6984213B2 (en) 2001-03-15 2006-01-10 Specialized Health Products, Inc. Biopsy needle device
US7004927B2 (en) 2001-03-15 2006-02-28 Specialized Health Products, Inc. Safety shield for medical needles
US7125397B2 (en) 1997-08-20 2006-10-24 B. Braun Melsungen Ag Protective device for an injection needle
US7160269B2 (en) 1999-12-01 2007-01-09 B. Braun Melsungen Ag Short catheter
US7179244B2 (en) 2001-03-15 2007-02-20 Specialized Health Products, Inc. Resettable safety shield for medical needles
US7226434B2 (en) 2003-10-31 2007-06-05 Tyco Healthcare Group Lp Safety shield
US7264613B2 (en) 1997-08-20 2007-09-04 B. Braun Melsungen Ag Spring clip safety IV catheter
US7341573B2 (en) 2001-03-15 2008-03-11 Specialized Health Products Inc. Safety shield for medical needles
US7413562B2 (en) 2001-03-15 2008-08-19 Specialized Health Products, Inc. Safety shield for medical needles
US7458954B2 (en) 2002-11-07 2008-12-02 Specialized Health Products, Inc. Safety shield for medical needles
US7611499B2 (en) 1997-08-20 2009-11-03 B. Braun Melsungen Ag Spring clip safety IV catheter
US7828773B2 (en) 2005-07-11 2010-11-09 Covidien Ag Safety reset key and needle assembly
US7850650B2 (en) 2005-07-11 2010-12-14 Covidien Ag Needle safety shield with reset
US7905857B2 (en) 2005-07-11 2011-03-15 Covidien Ag Needle assembly including obturator with safety reset
US7963943B2 (en) 2007-09-27 2011-06-21 Tyco Healthcare Group Lp I.V. catheter assembly and needle safety device
US7988664B2 (en) 2004-11-01 2011-08-02 Tyco Healthcare Group Lp Locking clip with trigger bushing
US8357104B2 (en) 2007-11-01 2013-01-22 Coviden Lp Active stylet safety shield
US8376994B2 (en) 2001-02-26 2013-02-19 B. Braun Melsungen Ag Protective device for an injection needle
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US7125397B2 (en) 1997-08-20 2006-10-24 B. Braun Melsungen Ag Protective device for an injection needle
US6287278B1 (en) 1997-08-20 2001-09-11 B. Braun Melsungen, Ag Spring dip safety IV catheter
US7611499B2 (en) 1997-08-20 2009-11-03 B. Braun Melsungen Ag Spring clip safety IV catheter
US9289237B2 (en) 1997-08-20 2016-03-22 B. Braun Melsungen Ag Spring clip safety IV catheter
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US7611487B2 (en) 1997-08-20 2009-11-03 B. Braun Melsungen Ag Protective device for an injection needle
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US8100858B2 (en) 1997-08-20 2012-01-24 B. Braun Melsungen Ag Protective device for an injection needle
US7264613B2 (en) 1997-08-20 2007-09-04 B. Braun Melsungen Ag Spring clip safety IV catheter
US6117108A (en) * 1997-08-20 2000-09-12 Braun Melsungen Ag Spring clip safety IV catheter
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US7806849B2 (en) 1999-12-01 2010-10-05 B. Braun Melsungen Ag Short catheter
US6425884B1 (en) 2000-01-18 2002-07-30 Becton, Dickinson And Company Compact needle shielding device
US6234999B1 (en) 2000-01-18 2001-05-22 Becton, Dickinson And Company Compact needle shielding device
US8376994B2 (en) 2001-02-26 2013-02-19 B. Braun Melsungen Ag Protective device for an injection needle
US9022979B2 (en) 2001-02-26 2015-05-05 B. Braun Melsungen Ag Protection device for an injection needle
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US8845584B2 (en) 2001-03-15 2014-09-30 Specialized Health Products, Inc. Safety shield for medical needles
US9539398B2 (en) 2001-03-15 2017-01-10 Specialized Health Products, Inc. Safety shield for medical needles
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US6595955B2 (en) 2001-03-15 2003-07-22 Specialized Health Products, Inc. Safety shield for medical needles
US6902546B2 (en) 2001-03-15 2005-06-07 Specialized Health Products, Inc. Safety shield for medical needles
US7618395B2 (en) 2001-03-15 2009-11-17 Specialized Health Products, Inc. Methods for shielding medical needles
US6984213B2 (en) 2001-03-15 2006-01-10 Specialized Health Products, Inc. Biopsy needle device
US7004927B2 (en) 2001-03-15 2006-02-28 Specialized Health Products, Inc. Safety shield for medical needles
EP1368077A4 (fr) * 2001-03-15 2008-10-22 Specialized Health Prod Inc Protection de surete pour aiguilles medicales
US7008402B2 (en) 2001-03-15 2006-03-07 Specialized Health Products, Inc. Safety shield for medical needles
US7179244B2 (en) 2001-03-15 2007-02-20 Specialized Health Products, Inc. Resettable safety shield for medical needles
US7413562B2 (en) 2001-03-15 2008-08-19 Specialized Health Products, Inc. Safety shield for medical needles
US7357784B2 (en) 2001-03-15 2008-04-15 Specialized Health Products Inc. Safety shield for medical needles
US7458954B2 (en) 2002-11-07 2008-12-02 Specialized Health Products, Inc. Safety shield for medical needles
US8506528B2 (en) 2003-10-31 2013-08-13 Covidien Lp Locking clip with trigger bushing
US7736332B2 (en) 2003-10-31 2010-06-15 Tyco Healthcare Group Lp Safety shield
US9089673B2 (en) 2003-10-31 2015-07-28 Covidien Lp Locking clip with trigger bushing
US7226434B2 (en) 2003-10-31 2007-06-05 Tyco Healthcare Group Lp Safety shield
US7988664B2 (en) 2004-11-01 2011-08-02 Tyco Healthcare Group Lp Locking clip with trigger bushing
US8834417B2 (en) 2005-06-06 2014-09-16 Covidien Ag Needle assembly with removable depth stop
US8348894B2 (en) 2005-07-11 2013-01-08 Covidien Lp Needle assembly including obturator with safety reset
US8162889B2 (en) 2005-07-11 2012-04-24 Covidien Ag Safety reset key and needle assembly
US7905857B2 (en) 2005-07-11 2011-03-15 Covidien Ag Needle assembly including obturator with safety reset
US7850650B2 (en) 2005-07-11 2010-12-14 Covidien Ag Needle safety shield with reset
US7828773B2 (en) 2005-07-11 2010-11-09 Covidien Ag Safety reset key and needle assembly
US7976498B2 (en) 2005-07-11 2011-07-12 Tyco Healthcare Group Lp Needle assembly including obturator with safety reset
US8313469B2 (en) 2007-09-27 2012-11-20 Tyco Healthcare Group Lp I.V. catheter assembly and needle safety device
US7963943B2 (en) 2007-09-27 2011-06-21 Tyco Healthcare Group Lp I.V. catheter assembly and needle safety device
US8357104B2 (en) 2007-11-01 2013-01-22 Coviden Lp Active stylet safety shield
US9877771B2 (en) 2009-09-10 2018-01-30 Covidien Lp System and method for power supply noise reduction
US9440052B2 (en) 2011-02-28 2016-09-13 Injectimed, Inc. Needle guard
US9238104B2 (en) 2011-02-28 2016-01-19 Injectimed, Inc. Needle guard
US9610403B2 (en) 2011-02-28 2017-04-04 Injectimed, Inc. Needle guard
US9399119B2 (en) 2011-02-28 2016-07-26 Injectimed, Inc. Needle guard
US11344671B2 (en) 2011-02-28 2022-05-31 Injectimed, Inc. Needle guard

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