CN101137407B - Needle shielding device - Google Patents
Needle shielding device Download PDFInfo
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- CN101137407B CN101137407B CN2006800075904A CN200680007590A CN101137407B CN 101137407 B CN101137407 B CN 101137407B CN 2006800075904 A CN2006800075904 A CN 2006800075904A CN 200680007590 A CN200680007590 A CN 200680007590A CN 101137407 B CN101137407 B CN 101137407B
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- syringe needle
- needle
- obturator
- longitudinal axis
- screening
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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
- A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- 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)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The present invention discloses a pinhead subassembly with pinhead shielding piece. The shielding piece includes: tube cavity, which can slide on the pinhead; holding machine; and pinhead blockage, which enter the tube cavity at least partly so as to block the pinhead from sliding far away. A spring presses the blockage towards the pinhead axes with certain angle. The pinhead is blocked by a limiter moving to near end relative to the blockage, the limiter is fixed with the mode of discontinuous part (the discontinuous part contacts the shielding piece) on the pinhead, tether or contacting pinhead hub cover. When the pinhead shielding piece moves to the shielding position from the non shielding position, the pinhead blockage enters the tube cavity partly at least. The pinhead blockage is restricted at the shielding position in radial direction and axial direction. The holding machine also can prevent the blockage from moving in radial, vertical and cycle direction. In one embodyment instance, the pinhead blockage is a small ball. The canal adapter and tube can be habited in the pinhead. The pinhead blockage also can lock the canal adapter on the pinhead shielding piece, so as to ensure the canal adapter be released only when the pinhead has been shielded.
Description
The cross reference of related application
The present invention requires the priority of following provisional application, and these provisional application are incorporated herein by reference:
The 60/659226-Shielding Apparatus for Locking onto a Needle-applying date is on March 7th, 2005;
The 60/659217-Needle shielding Apparatus with Tubular NeedleCover-applying date is on March 7th, 2005;
The 60/659213-Needle Shielding Apparatus with Tether to NeedleHub-applying date is on March 7th, 2005;
The 60/714954-Blood Collection Device with Needle Shield-applying date is on JIUYUE 7th, 2005.
Background technology
The application relates to the medical treatment device that uses syringe needle, for example spinal needles, venous duct introducer, blood collection device and syringe.It comprises the device that is used at the exhausted syringe needle of this device shielding.
Summary of the invention
The first embodiment of the present invention is medical treatment device-needle assembly (for example catheter introducer, syringe, band wing syringe needle or a Huber syringe needle).This assembly comprises syringe needle and the needle shield that can on this syringe needle, slide.The housing that forms the part of this shielding part is loaded with obturator (preferably bead), and this obturator is by the spring bias voltage.Housing has interior lumen, and needle fits is to this interior lumen, and like this, housing can slide along syringe needle.In the first non-screening-off position that makes that needle tip exposes, spring is with the longitudinal axis of obturator bias voltage to syringe needle.In the secondary shielding position that makes needle tip shielding, the local at least interior lumen that is arranged in housing of obturator, thus stop that sharp distal exposes from needle shield assemblies.Limiter prevents that needle shield assemblies motion from leaving the syringe needle sharp distal.Limiter can between the discontinuous part of syringe needle and the needle shield against form, be resisted against the pipe on the flange of needle hub or be fixed on the tether (tether) on the needle hub.
The shielding part that constitutes the obturator carrier partly be configured the restriction obturator towards, around or move along the longitudinal axis of syringe needle.Therefore, obturator is written in the opening of first housing, and this opening is suitable shape and size, and extends to interior lumen from outer wall.Local at least first housing that covers of medicated cap.
Medicated cap has side holes, and bead is protruding to the first non-screening-off position through this side holes.Spring is the compression spring, but also can be for reversing or other type spring.It is preferably coaxial with housing and syringe needle, and is installed in the outside of housing, is roughly parallel to the longitudinal axis of syringe needle.
Also provide extension, it also radially limits obturator with respect to the longitudinal axis of the syringe needle of secondary shielding position.Also can select or in addition, spring radially limits obturator with respect to the longitudinal axis of syringe needle.Shielding part also provides the wall in the obturator distally, and this wall limits obturator along the longitudinal direction in the secondary shielding position.Opening in the obturator carrier is arranged to prevent that obturator from getting into tube chamber fully.Tube chamber supports syringe needle facing to the obturator of secondary shielding position.In the secondary shielding position, obturator part at least is in the tube chamber, and this obturator axis runout needle axis.
The invention still further relates to the method for shielding needle tip.The obturator that is carried by the housing with tube chamber remains on non-screening-off position, radially moves and towards the syringe needle bias voltage with respect to the longitudinal axis of syringe needle.Syringe needle slides with respect to obturator.Needle shield moves to screening-off position from non-screening-off position, and like this, the top of syringe needle is through obturator, and obturator is local at least to get into tube chamber, thus the sharp-pointed distal top of blocking syringe needle.In non-screening-off position, obturator contacts with the outer surface of syringe needle, and spring with the obturator bias voltage on the outer surface of syringe needle.Obturator radially, vertical and/or circumferential motion all is restricted.In screening-off position, the longitudinal axis of the axis runout syringe needle of obturator.
To introduce these and further feature of the present invention below in more detail.
Description of drawings
Figure 1A, B and C are the cutaway view of the expression embodiment of the invention when being used for catheter introducer;
Fig. 2 is the cutaway view that is passed in the needle shield of deployment (deployed) position;
Fig. 3 is the vertical sectional view that is illustrated in the angle between needle slope and the shielding wall
Fig. 4 is the vertical sectional view of passing catheter introducer, and wherein needle shield is in non-deployed position;
Fig. 5 is the vertical sectional view of passing catheter introducer, and wherein needle shield is in deployed position;
Fig. 6 is the isometric cross-sectional view of passing catheter introducer, and wherein needle shield is in non-deployed position;
Fig. 7 is the isometric cross-sectional view of passing catheter introducer, and wherein needle shield is in deployed position;
Fig. 8 is the exploded view of the parts of needle shield and needle hub;
Fig. 9 is the vertical sectional view of passing catheter introducer, and wherein needle shield is in non-deployed position;
Figure 10 is the vertical sectional view of passing catheter introducer, and wherein needle shield is in deployed position;
Figure 11 is the isometric cross-sectional view of passing catheter introducer, and wherein needle shield is in non-deployed position;
Figure 12 is the isometric cross-sectional view of passing catheter introducer, and wherein needle shield is in deployed position;
Figure 13 is the exploded view of the parts of needle shield and needle hub;
Figure 14 is the isometric view that is used for the extruding polymerization property management of one embodiment of the invention;
Figure 15 is the vertical sectional view of passing catheter introducer, and wherein needle shield is in non-deployed position;
Figure 16 is the vertical sectional view of passing catheter introducer, and wherein needle shield is in deployed position;
Figure 17 is the isometric cross-sectional view of passing catheter introducer, and wherein needle shield is in non-deployed position;
Figure 18 is the isometric cross-sectional view of passing catheter introducer, and wherein needle shield is in deployed position;
Figure 19 is the exploded view of the parts of needle shield and needle hub;
Figure 20 is the isometric view with catheter introducer of needle shield, and wherein, the shielding part housing is processed by the polymer pipe of extruding;
Figure 21 is the cutaway view of housing that passes the embodiment of Figure 20;
Figure 22 is the vertical sectional view of housing of the embodiment of Figure 20;
Figure 23 is the vertical sectional view of passing the syringe needle screening arrangement, and wherein needle shield is in non-deployed position;
Figure 24 is the vertical sectional view of passing the syringe needle screening arrangement, and wherein needle shield is in deployed position;
Figure 25 is the isometric cross-sectional view of syringe needle screening arrangement, and wherein needle shield is in non-deployed position;
Figure 26 is the exploded view of the parts of syringe needle screening arrangement;
Figure 27-the 30th is equipped with the isometric view of the wing catheter introducer of needle shield;
Figure 31-the 32nd is equipped with the isometric view of the wing catheter introducer of needle shield;
Figure 33-the 34th is used for the isometric view of the needle shield of Huber syringe needle, and this Huber syringe needle is used for implantable inlet port;
Figure 35 is the isometric view with blood collection device of needle shield;
Figure 36-the 51st, the right-angle view of the optional embodiment of the present invention.
The specific embodiment
To introduce the embodiment of the invention when being used for catheter introducer, syringe or other below based on the device of syringe needle.The scope that it is not intended to limit the invention.
The present invention can be used for various devices based on syringe needle, for example catheter introducer, syringe, Winged needle and Huber syringe needle.Under nearly all situation, the shielding syringe needle comprises needle shield is provided, and guarantees it can not leave sharp distal or the proximal motion of syringe needle and expose sharp distal again.Therefore, the locking mechanism of some types must just prevent that shielding part distad and proximal movement in case shield syringe needle.
In the present invention, prevent the shielding part proximal motion through the assembly among Figure 1A, B and C and Fig. 2.Assembly 1 comprises syringe needle 10, and this syringe needle 10 has longitudinal axis 11, outer surface 12 and sharp distal 15.Needle shield assemblies 90 has interior lumen 93, and this interior lumen 93 is coaxial with syringe needle 10.Needle shield assemblies 90 is expressed as the inside at the catheter adapter of Figure 1A or hub sleeve 23.Shield assembly 90 is made up of first housing 95, and this first housing 95 is covered by medicated cap 100.First housing 95 has the stepped area that reduces diameter 105, and spring 2 is through on this stepped area.First housing 95 has opening 18, and this opening forms the keeper or the carrier 16 (shown in Figure 1A and 4) of bead 3 with first housing 95.Opening 18 passes from outer wall 19 and extends to tube chamber 93.Opening 18 is arranged to like this, and promptly bead 3 can move in this opening, but bead 3 with respect to axis 11 radially, vertically and circumferential movement all be restricted.
In the non-screening-off position of Figure 1A, bead 3 passes the hole 21 in the medicated cap 100 and protrudes.Spring 2 applies power on bead 3, this power has axial component and radially towards the component of axis 11.In non-screening-off position, bead 3 contacts with the outer surface 12 of syringe needle 10.Therefore, the biasing force of spring 2 will make bead 3 towards axis 11 motions.
When shield assembly 90 when syringe needle 10 slides, it is near far-end 15.When the inclined-plane of syringe needle 10 during through bead 3, the biasing force in the spring 2 part is pressed into bead 3 in the tube chamber 93 at least, and it leaves hole 21, and in opening 18, radially moves towards axis 11.Because therefore the geometry of opening 18 works as the inclined-plane through out-of-date, bead 3 lies at least partially in the tube chamber 93.Axis 24 off-axis 11 of bead 3.The radial motion of bead 3 receives the restriction of the roof 20 of spring 2 and medicated cap 100.The axially-movable of bead receives the restriction of the antetheca 22 of opening 18.The distal motion of syringe needle 10 is pressed against bead 3 on the wall 22.When shielding part 90 proximads slips (being that syringe needle 10 distad slides) at this moment, syringe needle 10 will be stopped that this bead 3 part at least is in the tube chamber 15 by bead 3, and the motion of this bead receives the restriction of spring 2 and wall 20,22.
With reference to figure 3, when the local at least position of stopping up tube chamber 93 that bead 3 moves to it, the wall 20 of medicated cap 100 (tangent) angulation α with bead 3.This angle [alpha] is set to the value less than needle tip 15 smallest bevel angle beta.Among the described here embodiment, the angle between wall 20 and bead 3 is about zero degree.When this angle is too big with respect to angle beta, bead 3 will can not be stuck.
Aforesaid operations will be more in detail introduced, and will change a little at the remainder (about catheter introducer, syringe and other medical treatment device based on syringe needle) of description.Here three kinds of catheter introducers have been represented.In first kind, the distal motion that needle shield leaves the syringe needle sharp end receives the restriction against (abutment) between the discontinuous part on needle shield and the introducer syringe needle.In second kind, needle shield is in the end of tubular member, the distal motion of this needle shield receive and be installed in parts on the needle hub against restriction.In the third, needle shield ties up on the needle hub, thereby prevents that needle shield from leaving the sharp end distal motion of syringe needle.This is used for syringe too.In all cases, all will prevent proximal motion and therefore retract the sharp end of syringe needle through said apparatus with exposed needle.
Introduce the present invention when being used for first kind catheter introducer below, wherein, the distal motion of needle shield assembly receives the restriction of the discontinuous part on syringe needle, for example projection or fold.Following with reference to figure 4-8.
The purpose of catheter introducer 5 is through syringe needle puncture human or animal body, forms opening, conduit is inserted this opening neutralization remove syringe needle then.In order to prevent that infectious disease from propagating through acupuncture, the top of syringe needle in case take out just should shield.
Through syringe needle 10 health that punctures.This syringe needle 10 has outer surface 12, near-end 15, far-end 20 and tube chamber 22.Far-end 20 has pointed tip or tip 25.Far-end tilts.Be expressed as two inclined-planes among the figure, formed the surface 30 and 40 on the slope of extending from sharp point 25 along proximal direction.Also can use than two more or less inclined-planes.Near-end 15 is fixed on the needle hub 45.Syringe needle 10 has near enlarged cross section 14 zones that are positioned at the far-end 20.This enlarged cross section can be the form of annular ring, expansion syringe needle 10 diameters, grading ring or discontinuous part, projection or fold on syringe needle.Enlarged cross section can be through being formed on the syringe needle 10 playing pleat, grinding, distortion or deposition materials on the needle surface.In the diameter and the difference between its enlarged cross section very little (about 0.004 inch) of syringe needle 10, and its length has only about 0.03 inch.
Towards first housing, 95 far-ends, 97 places (but still in stepped area 105), first housing 95 provides opening 120, this opening 120 be sized to hold bead 122.Second housing or medicated cap 100 have near-end 130 and far-end 135.Near-end 130 provides opening 140, this opening 140 be sized to make its diameter less times greater than syringe needle 10, but be slightly smaller than the diameter of area of enlarged cross section 14.Like this, second housing can be axially 15 slides towards far-end 20 along syringe needle from near-end, up to its opening 140 abuts area of enlarged cross section 14, at this moment, its further distal direction slip.When first and second housings 95 and 100 assemblings, second housing 100 covers the major part of first housing 95, except the far-end 97 of this first housing.Like this, second housing 100 covers spring 110.Second housing 100 provides opening 150, and being sized to of this opening 150 makes the part of bead 122 be protruding in the groove 75 through it.
When before needle shield assemblies 90 is being disposed, being in the catheter hub 52, the part of bead 122 is protruded through opening 150, and is in the groove 75.This is locked in needle shield assemblies 90 on the catheter hub 52; Make that simultaneously catheter hub 52 can be according to the extent of groove 75 (promptly; No matter this groove is a circumferential slot, still because it is not merely able to carry out finite motion around the whole interior Zhou Yanshen of catheter hub) and with respect to needle shield assemblies 90 rotations.The part of bead 122 also is in the tube chamber 93 of first housing 95, and the outer surface 12 of abuts needle 10 (being the outer wall 12 of bead 122 contact needles 10).Syringe needle 10 can slide relative to one another under very low friction situation and rotate with shield assembly 90.Bead 122 receives the radially restriction of groove 75 and syringe needle 10.Therefore, needle shield assemblies 90 is locked in the catheter hub 52.Spring 110 axial application of force and on bead 122 along distal direction.And the syringe needle of abut ball 122 10 is constrains ball 122 radially, and prevents that it from leaving groove 75.
In case conduit 65 places in the patient body, syringe needle 10 is pulled (that is to say that needle shield assemblies 90 is towards top 25 motions of syringe needle 10) along proximal direction.When first inclined- plane 30 and 40 facing to bead 122, when first inclined-plane 40 aligns with bead 122, bead 122 still less receives the radially restriction of syringe needle 10 then, and is pushed by spring 110, it begins distad and radially to move in the opening 120.Like this, bead 122 leaves opening 150 and groove 75, and further radially inwardly gets in the tube chamber 93 of shield assembly 90, (wall of the opening 150 in second housing 100) pivoted around edge 155, and distad slide along the length of opening 120.When syringe needle 10 continued its proximal motion, it no longer radially limited, and bead 122 leaves groove 75 fully.When bead 122 was located such that edge 155 is higher than it, bead 122 as far as possible far leading thread received the restriction and the partial occlusion tube chamber 93 of the size of opening 120 in getting into tube chamber 93.
When inclined- plane 30 and 40 facing to bead 122 or local during facing to bead 122, device is worked in a similar manner.That is to say that when needle tip 25 process beads 122, syringe needle 10 is constrains ball 122 no longer.Spring 110 is along opening 120 urges ball 122, and like this, bead 122 leaves groove 75, and around the edge 155 pivoted.Bead 122 receive opening 120 size and geometry restriction and prevent to get into tube chamber 93.Like this, bead 122 partial occlusion tube chambers 93.
Represented among Fig. 5 in opening 120 and the position of the bead 122 of partial occlusion tube chamber 93.When bead 122 moved to the point of said partial occlusion tube chamber 93, area of enlarged cross section 14 was against the rear aperture 140 of medicated cap 100, and further spurred syringe needle 10 and will make shield assembly 90 leave catheter hub 52 (because bead 122 no longer is in the groove 75).The power that is acted on the bead 122 by groove 75 because proximal direction spurs syringe needle can radially push bead 122 in the tube chamber 93.
The interaction of the area of enlarged cross section 14 on the syringe needle 10 and the rear aperture 140 of second housing 100 will prevent the motion (like this, shield assembly 90 slides off the far-end 20 of syringe needle) of shield assembly distal direction.Prevent shield assembly proximal direction motion (so that exposing needle tip 25) through far-end 20 abut ball 122 that make syringe needle 10.
Be arranged to like this from the distance on area of enlarged cross section 14 to top 25, when align with bead 122 in top 25, have enough spaces to be used for bead and below second housing 100, move at opening 120.By the angle that forms with bead 122 tangent upper surfaces 136 and top said identical with reference to figure 3.Being sized to of the far-end 97 of first housing 95 and medicated cap 100 is protruding, and like this, top 25 can not be exposed from the far-end 97 of shielding part 90.Can also use a plurality of beads, these beads place a plurality of openings identical with opening 120 and 150.If like this, far-end 97 can reduce with the protruding of medicated cap 100, thereby makes shield assembly 90 compacter.
After disposing but before syringe needle 10 distal motion, the part of bead 122 is in the tube chamber 93, and its part is pushed against on the distal wall 157 of opening 120 through spring 110.The top of bead 122 be in second housing 100 far-end 135 below.In optional embodiment, expansible spring 110 is sealed the top of opening 120.Therefore, bead 122 radial and axial being limited in the opening 120.When syringe needle 10 distal motion, it is with abut ball 122, and this bead 122 will press the distal wall 157 and surface 136 of second housing 100.Therefore will prevent syringe needle 10 further distal motion like this, and prevent that needle tip 25 from exposing from shield assembly.
Being sized to of tube chamber 93 makes syringe needle 10 be assemblied in its inside relatively closely.Therefore, when syringe needle 10 distal motion (being shielding part 90 proximal motion) and bead 122 abut needle tip 25, syringe needle 10 will can not leave bead 122.Therefore, tube chamber 93 provides the supporting relative with bead 122, so that prevent syringe needle 10 swings, and prevents that top 25 from moving into and thrusts first housing 95.Also help shielding part 90 is through (far-end that is shielding part 90 is through on the near-end of syringe needle) on (threading) syringe needle 10 in the snug fit between tube chamber 93 and the syringe needle 10.Snug fit means that shielding part guides and becomes to make the near-end 15 of syringe needle 10 to get in the opening 140 in the near-end 130 of medicated caps 100.This is very important, because opening 140 is only big 0.001 inch than the diameter of syringe needle 10 usually.
In optional embodiment, bead 122 gets in the tube chamber 93 fully.The diameter of bead 122 is less times greater than the diameter of tube chamber 93.Then, bead 122 receives the axial restraint of tube chamber 93 and syringe needle 10.At this moment, the size of tube chamber 93 also is arranged to provide and bead 122 supportings relative, that be used for syringe needle 10, thereby prevents syringe needle swing and prevent that top 25 from thrusting first housing 95.
In order to leave groove 75, the distance of bead 122 motions equals it adds medicated cap 100 from the amount of opening 150 protrusions wall thickness (about 0.003 " to 0.005 ") at least.When shielding part was disposed, the amount that bead 122 stretches in the tube chamber 93 was approximately equal to this distance.This makes the part of tube chamber 93 block.When the syringe needle that uses than small dimension, need bigger bead, so that enough occludes lumen 93, thereby prevent needle tip 25 from passing the not obstruction part of tube chamber 93 and stretch out.When using the syringe needle of big specification, bead can littler (that is, when syringe needle had than major diameter, bead can be littler).
Above-mentioned explanation comprises the operation of the needle shield 90 with conduit tube component 50, except the syringe needle function of shielding, also provides to be used for shielding part 90 is locked on the conduit tube component 50 and the mechanism that it is unblanked.This provides attendant advantages, guarantees that promptly shielding part 90 can not remove up to making needle tip 25 conductively-closeds from catheter hub 52.When not needing catheter lock regularly, medicated cap 100 can be closed (promptly not having opening 120), and enlarges so that hold the whole diameter of bead 122 a little.
Introduce below and use the second type catheter introducer of the present invention.In this second type catheter introducer, when syringe needle shielded, pipe covered the whole length of syringe needle, and the further distal motion of restriction needle shield.With reference to figure 9-14.
Thrust health by syringe needle 210, this syringe needle 210 has outer surface 212, near-end 215, far-end 220 and tube chamber 222.Far-end 220 has sharp point 225.Far-end tilts, and the surface 230 and 240 on two inclined-plane-formation, 225 slopes of stretching out along proximal direction from sharp point is arranged.Also can use than two more or less inclined-planes.Near-end 215 is fixed on the needle hub 245.
Needle hub 245 has the pipe 250 that extends backward, and it is fixed on the near-end 215 of syringe needle 210 from this.Needle hub tube 250 has near-end 254 and far-end 252 (syringe needle 210 is fixed on this far-end 252).Needle hub tube 250 has tube chamber 260, and this tube chamber 260 is coaxial with the tube chamber 220 of syringe needle 210, and like this, fluid can flow in the tube chamber 260 along tube chamber 222.Needle hub tube 250 is integrally formed with coaxial with another pipe 255, and this pipe 255 forms handle, and near-end 258 and far-end 256 are arranged.Pipe 250 is located to be connected at the back 275 of assembly (near-end) with 255.That is to say that 275 places are connected the near-end 254 of syringe needle tube 250 at the back with the near-end 258 of handle tube 255.Needle hub 250 is in open back (porose 270), and this needle hub 250 is equipped with breather plug, allows air to overflow when getting into tube chamber 222 and flowing into tube chamber 260 with convenient fluid but does not allow liquid to overflow.Pipe 250 and 255 all transparent (perhaps having transparent part at least), like this, fluid stream can be seen by the user.Pipe 255 has the peripheral outer lips 272 that is positioned at far-end 256 places, these peripheral outer lips 272 approximate near-ends 215 with syringe needle 210 be fixed on the needle hub 245 the zone in line.All flanges 274 in pipe 255 also has, basic and external flange 272 of all flange 274 in line in this.The combination of needle hub tube 250 and handle tube 255 can be thought two concentric cylinders.Between pipe 250 and 255 is the annular space 276 that extends to back 275 from far-end 256.
When needle shield assemblies 2110 was installed on the catheter hub 282 (part that is the medicated cap 2100 and first housing 295 is in the catheter hub 282), before disposing, the part of bead 2122 was protruded through opening 2150, and is in the groove 293.This is locked in needle shield assemblies 2110 on the catheter hub 282; Make that simultaneously catheter hub 282 can be according to the extent of groove 293 (promptly; No matter this groove is a circumferential slot, still because it is not merely able to carry out finite motion around the whole interior Zhou Yanshen of catheter hub) and with respect to needle shield assemblies 2110 rotations.The part of bead 2122 also is in the tube chamber 2112 of first shield assembly 2110, and the outer surface 212 of abuts needle 210 (being the outer wall 212 of bead 2122 contact needles 210).Syringe needle 210 can slide relative to one another under very low friction situation and rotate with shield assembly 2110.Bead 2122 receives the radially restriction of groove 293 and syringe needle 210.Therefore, needle shield assemblies 2110 is locked in the catheter hub 282.Spring 2111 axial application of force and on bead 2122 along distal direction.And the syringe needle of abut ball 2,122 210 is constrains ball 2122 radially, and prevents that it from leaving groove 293.This also is shown in Figure 11.
In case conduit 286 places in the patient body, syringe needle 210 is pulled (that is to say that needle shield assemblies 2110 is towards top 225 motions of syringe needle 210, perhaps needle hub 245 proximads are pulled) along proximal direction.When inclined- plane 230 and 240 facing to bead 2122, when first inclined-plane 240 aligns with bead 2122, bead 2122 still less receives the radially restriction of syringe needle 10 then, and is pushed by spring 2111, it begins distad and radially to move in the opening 2120.Like this; Bead 2122 leaves the groove 293 in opening 2150 and the catheter hub 282 in the medicated cap 2100; And further radially inwardly get in the tube chamber 2112 of shield assembly 2110, (wall of the opening 2150 in medicated cap 2100) pivoted around edge 2155, and distad slide along the length of opening 2120.When second inclined-plane 230 alignd with bead 2122, syringe needle 210 no longer radially limited it, and bead leaves groove 293 fully.When bead 2122 was located such that edge 2155 is higher than it, bead 2122 as far as possible far leading thread received the restriction and the partial occlusion tube chamber 2112 of the size of opening 2120 in getting into tube chamber 1212.
When inclined- plane 230 and 240 facing to bead 2122 or local during facing to bead 2122, device is to work with above-mentioned similar mode.Spring 2111 is along opening 2120 urges ball 2122, and like this, bead 2122 leaves groove 293, and around the edge 2155 pivoted.Bead 2122 receive opening 2120 size and geometry restriction and prevent to get into tube chamber 293.Like this, bead 2122 partial occlusion tube chambers 2112.
After bead 2122 moves to the point that makes its partial occlusion tube chamber 2112 (as stated); The flange 2117 of shield assembly 2110 is against the inner flange 274 of pipe 255; And further spur syringe needle 210 and will make shield assembly 2110 leave catheter hub 282, because bead 2122 no longer is in the groove 293.Because the power that is acted on the bead 2122 by groove 293 along proximal direction pulling syringe needle also radially inwardly pushes bead 2122 in the tube chamber 2112.
Interaction through flange 274 and 2117 prevents that shield assembly is along distal direction move (thereby making shield assembly 2110 finally skid off the far-end 220 of syringe needle).Through making syringe needle 210 far-ends 220 abut ball 2122 (this bead 2122 is against the wall 2157 of first housing 295 and the upper inside wall 2136 or the medicated cap 2100 of second housing) prevent shield assembly move (so that exposed needle top 225) along proximal direction.
Be arranged to like this from the distance of flange 2117 to needle tip 225, when align with bead 2122 in top 225, have enough spaces to make bead motion in opening 2120 below medicated cap 2100.Can consider the setting of angle [alpha] and β (promptly being formed at the angle of contingence and smallest bevel angle between bead 2122 and the surface 2136) such as top said about Fig. 3.
After the deployment but before syringe needle 210 distal motion, the part of bead 2122 is in the tube chamber 2112, and its part is pushed against on the distal wall 2157 of opening 2120 through spring 2111.The top of bead 2122 be in medicated cap 2100 far-end 2135 upper surface 2136 below.The far-end 299 of first housing 295 and the size of medicated cap also are arranged to protruding, and like this, top 225 can not be exposed from far-end 2115.Also can use a plurality of beads.Previous designs also provides aforementioned conduit lock-in feature.
In a single day shielding part disposes (but before syringe needle 210 distal motion), and the part of bead 2122 just is in the tube chamber 2112, and its part is pushed against on the wall 2157 of opening 2120 through spring 2111.The top of bead 2122 be in medicated cap 2100 far-end 2135 upper surface 2136 below.Opening 2120 can be sealed by spring 2111.Bead 2122 radial and axial being limited in the opening 212.When syringe needle 210 distal motion, it is abut ball 2122, and this bead 2122 will be pressed against on the wall 2136 of distal wall 2157 and medicated cap 2100 of first housing 295.Like this, syringe needle 210 can not expose from shielding part in the distally.
The tube portion of first housing 295 and shielding part 2110 can be processed by extruding polymerization property management 950, (also sees Figure 20-22) as shown in Figure 14.Polymer pipe 950 is relatively thin and flexibility arranged.This (and it extrude process) make it very light with make simply, and compare with harder moulding part, make its required quantity of material and reduce.For hardness and intensity are provided, polymer pipe can strengthen through the tinsel of extruding jointly 956.Tinsel 956 is expressed as the longitudinal metallic wire that extends along the length of pipe 955.Longitudinal metallic wire also may be selected to be fabric, net, grid or the helix of extruding jointly.
Introduce below and use catheter introducer of the present invention, wherein, the distal motion of needle shield receives the restriction that is fixed on the tether on the needle hub.With reference to figure 15-19.Needle hub 45 has the pipe 50 that extends backward, and it is fixed on the near-end 15 of syringe needle 10 from this pipe.Needle hub tube 50 has near-end 54 and far-end 52 (syringe needle 10 is fixed on this far-end 52).Needle hub tube 50 has tube chamber 60, and this tube chamber 60 is coaxial with the tube chamber 22 of syringe needle 10, and like this, fluid can flow in the tube chamber 60 along tube chamber 22.Needle hub tube 50 forms handle, and the user can catch conduit tube component 5 through this handle, so that syringe needle 10 is inserted in the patient body.
When needle shield assemblies 110 was installed on the catheter hub 82 (part that is the medicated cap 100 and first housing 95 is in the catheter hub 82), before disposing, the part of bead 122 was protruded through opening 150, and is in the groove 93.This is locked in needle shield assemblies 110 on the catheter hub 82; Make that simultaneously catheter hub 82 can be according to the extent of groove 93 (promptly; No matter this groove is a circumferential slot, still because it is not merely able to carry out finite motion around the whole interior Zhou Yanshen of catheter hub) and with respect to needle shield assemblies 110 rotations.The part of bead 122 also is in the tube chamber 112 of first shield assembly 110, and the outer surface 12 of abuts needle 10 (being the outer wall 12 of bead 122 contact needles 10).Syringe needle 10 can slide relative to one another under very low friction situation and rotate with shield assembly 110.Bead 122 receives the radially restriction of groove 93 and syringe needle 10.Spring 111 axial application of force and on bead 122 along distal direction.And the syringe needle of abut ball 122 10 is constrains ball 122 radially, and prevents that it from leaving groove 93.
In case conduit 86 places in the patient body, syringe needle 10 is pulled (that is to say that needle shield assemblies 110 is towards top 25 motions of syringe needle 10, perhaps needle hub 45 proximads are pulled) along proximal direction.When first inclined-plane 40 and second inclined-plane 30 facing to bead 122, when first inclined-plane 40 aligns with bead 122, bead 122 still less receives the radially restriction of syringe needle 10 then, and is pushed by spring 111, it begins distad and radially to move in the opening 120.Like this; Bead 122 leaves the groove 93 in opening 150 and the catheter hub 82 in the medicated cap 100; And further radially inwardly get in the tube chamber 112 of shield assembly 110, (distal wall of the opening 150 in medicated cap 100) pivoted around edge 155, and distad slide along the length of opening 120.When second inclined-plane 30 alignd with bead 122, syringe needle 10 no longer radially limited it, and bead leaves groove 93 fully.When bead 122 was located such that edge 155 is higher than it, bead 122 will radially get in the tube chamber 112 as far as possible far, received the restriction and the partial occlusion tube chamber 112 of the size of opening 120.This as shown in Figure 6.When inclined-plane 30 and 40 did not face toward bead 122, aforesaid operations was also similar, as top said in another embodiment.
When needle hub 45 proximal motion, tether 73 is emitted through opening 74, like this, and arm 79 distal motion.When bead 122 moves to the point that makes its partial occlusion tube chamber 112 (as stated), the arm 79 of tether 73 is against flange 72, and further spurs syringe needle 10 and will make shield assembly 110 leave catheter hub 82, because bead 122 no longer is in the groove 93.The power that is acted on the bead 122 by groove 93 because proximal direction spurs syringe needle also can radially push bead 122 in the tube chamber 112.
Interaction through arm 79 and flange 72 prevents that shield assembly is along the moving of distal direction (shield assembly 110 will finally slide off syringe needle far-end) like this.Syringe needle 10 far-ends 20 through abut ball 122 (this bead 122 is against the wall 157 of opening 120) prevent that shield assembly is along proximal direction move (to expose needle tip 25).
Be arranged to like this from the distance of tether arm 79 to needle tip 25, when align with bead 122 in top 25, have enough spaces to make bead motion in opening 120 below medicated cap 100.Relation between angle [alpha] (being formed at the angle of contingence between the upper surface 136 of bead 122 and medicated cap 100 far-ends 135) and the β (minimum needle slope angle) is as described above; Also considering provides the supporting relative with bead 122 by tube chamber 112; So that prevent syringe needle 10 swing, and prevent that top 25 from moving into and thrust first housing 95.Relation between bead and needle gauge size also as stated.
As shown in Figure 20, the needle hub 45 in Figure 15-19 illustrated embodiment can be made up of hard plastic component 940, and this needle hub 45 has the barb 945 at its near-end 947 places.Barb 945 cooperates with extruding polymerization property management 950, as shown in Figure 22.Polymer pipe 950 is extruded with lower tube 960 jointly, and this lower tube 960 forms conduit, and tether 73 extends along this conduit.Polymer pipe 950 and 960 is thinner relatively and soft.This is extruded manufacturing with them makes device extremely light simple with manufacturing together, and compares with hard molded part, makes its required quantity of material and reduces.For hardness and intensity are provided, polymer pipe can strengthen through tinsel, fabric, silk screen, wire grid lattice or the helix of extruding jointly.This as shown in Figure 14.
Introduce needle shield below and be used for hypodermic syringe (, not having conduit to be through above it) based on the device of syringe needle.With reference to figure 23-26.Syringe and needle assembly 5 are made up of syringe body 502, and this syringe body 502 has convex luer adapter 506, and female needle adapter 508 cooperates with this convex luer adapter 506.Needle adapter 508 has hub sleeve 512, and the near-end 505 of syringe needle 510 glues in this hub sleeve 512.Syringe needle 510 has sharp-pointed far-end 525.
Second housing or medicated cap 910 have near-end 930 and far-end 935.Near-end 930 provides opening 937, this opening 937 be sized to make its diameter less times greater than syringe needle 510.Like this, second housing 910 can be along syringe needle from near-end 505 slides towards far-end 525 vertically.When first and second housings 905 and 910 assembled, second housing 910 covered the major part of first housing 905, except near-end.Like this, second housing covers spring 911.Second housing 910 provides opening 940, and being sized to of this opening 940 makes that the part of bead 922 can be through its protrusion.This makes needle shield assemblies 900 very compact.But, second housing 910 can be made for a little bigger or provide bubble, so that hold bead 922, like this, bead 922 is covered fully.
When needle shield assemblies is in 512 last times of needle hub, before disposing, the part of bead 922 is through opening 940 protrusions.The part of bead 922 also is in the tube chamber 913 of first housing 905, and the outer surface 522 of abuts needle 510 (being the outer wall 522 of bead 922 contact needles 510).Shield assembly 900 can the 510 distal direction slip from this position along syringe needle under very low friction situation.Bead 922 receives the radially restriction of the diameter of opening 940, and being sized to of this opening 940 makes bead 922 not overflow and leave shielding part 900 through opening 940.Bead 922 also receives the radially restriction of syringe needle 510 on other direction.Spring 911 applies axial force along distal direction on bead 922.
Tether or band 800 are installed on the near-end 909 of first housing 905.It is preferably made in molded identical with first housing 905, but must be so.Tether 800 have far-end 802 (being installed on the near-end 909 of first housing 905) and near-end 804 (this near-end 804 from shielding part 900 backward with stretch out).At near-end 804 place's jugs 806, this handle 806 can be held by the user.Molded with band 800 like this, but also can be mounted in the separate part on the band 800.Tether or band 800 by flexible, semi-rigid material for example nylon process.Any can be crooked but provide the material of some vertical compressive strengths all suitable, as long as it can be exerted all one's strength and be applied on the shielding part 900 through tether 800.
In case syringe needle 510 has used and will shield, the user catches handle 806 simply and promotes it, and like this, needle shield 900 distad slides along syringe needle 510.When needle shield 900 arrival made that needle tip 525 is passed through the point of beads 922, bead 922 still less received the radially restriction of syringe needle 510, and by spring 911 pushings, it begins distad and radially to move in the opening 920.Like this, bead 922 leaves opening 940, and further radially inwardly gets in the tube chamber 913 of shield assembly 900, (this edge 955 is walls of the opening 940 in second housing 910) pivoted around edge 955.When needle tip 525 process beads 922, syringe needle 510 is constrains ball 922 no longer.Spring 911 is along opening 920 urges ball 922, and like this, bead 922 is 955 pivoted around the edge.Bead 922 receive opening 920 size and geometry restriction and prevent to get in the tube chamber 913 of first housing 905.Like this, bead 922 partial occlusion tube chambers 913.
When bead 922 moves to the point that makes its partial occlusion tube chamber 913, handle 806 contact retainers 518, thus prevent further to promote handle 806 and therefore promote tether 800.Through retainer 518 and handle 806 against preventing that shield assembly 900 is along distal direction move (shield assembly 900 will slide off syringe needle far-end 525) like this.Prevent shield assembly proximal direction motion (to expose needle tip 525) through syringe needle 510 far-ends 525 abut ball 922.
Compare with the length of first housing 905, the length of tether 800 (to the top 525) is arranged to when align with bead 922 in top 525, have enough spaces to be used for making the local at least tube chamber 913 that gets into of bead.When be chosen in bead 922 and needle shield 900 parts (this part is just at the radial outside of bead 922, and when shielding part is disposed bead 922 against this part) between angle the time, consider equally with above-mentioned catheter introducer.Being sized to of the near-end 909 of first housing 905 is protruding, and like this, can not be from the distally 907 expose on top 525.
When shielding part 900 was disposed, the part of bead 922 was in the tube chamber 913, and its part be in second housing 910 far-end 935 below, this second housing 910 radially limits it.When shield assembly 900 proximal motion, bead 922 is abut needle tip 525, and presses the distally and the upper inside walls of second housing 910.Therefore will prevent the further proximal motion of shield assembly like this and prevent that needle tip 25 from exposing.
Being sized to of tube chamber 913 makes syringe needle 510 be assembled to relatively closely in the tube chamber 913.Like this, when needle shield 900 is moved proximally into deployed position, and during bead 922 abut needle tip 525, syringe needle 510 will can not leave bead 922.Like this, tube chamber 913 provides the supporting relative with bead 922, so that prevent syringe needle 510 swings, and prevents that top 525 from moving into and makes it thrust first housing 905.
In optional embodiment, bead 922 gets into tube chamber 913 fully.The diameter of bead 922 is less times greater than tube chamber 913.At this moment, the size of tube chamber 913 also is arranged to provide and bead 922 supportings relative, that be used for syringe needle 910, thereby prevents syringe needle swing and prevent that top 525 from thrusting first housing 905.
Figure 27 and 28 has represented that the present invention is used for Winged needle.In this embodiment, shield assembly 6110 (its type is as said with reference to figure 9-13) is installed on the sheath 600.Sheath 600 has slit 603, and this slit makes sheath to slide with managing on 606 at wing plate 602.Slit 603 backs 604 against wing plate 602 will prevent shield assembly 6110 distal motion.
Figure 29 and 30 has represented another Winged needle purposes.In this purposes, needle assembly 7110 (its type is also as said with reference to figure 9-13) provides wing plate 702.Needle hub 45 is extruded between finger, so that it is discharged from body tube 704.Flange on the pipe 700 is resisted against the axle collar at 706 places, so that prevent needle hub 45 further proximal motion, disposes needle shield assemblies at this point, thereby prevents top 25 distal motion.
In Figure 31 and 32, represented another Winged needle of the present invention (being with or without conduit).In this embodiment, needle hub 845 is installed on first and second wing plates 802 and 804. Wing plate 802 and 804 surrounding tubes 806 are arranged.Wing plate 802 and 804 each has convexity 812,814 and 808,810, and they are as hinge, so that make wing plate 802 and 804 carry out some rotations around pipe 806.Convexity 808 is installed at near-end 8120 places or is resisted against on the needle assembly 8110, and provides than the short tube chamber, and like this, protruding 808 can slide along syringe needle 10 vertically, so wing plate 804 can slide along syringe needle 10 vertically.Protruding 810 also have tube chamber, and this tube chamber can make it slide vertically along pipe 806.The motion of wing plate 804 is limited between the convexity 812 and 814 of wing plate 802.
Move to its screening-off position (as stated) when bead; Thereby when preventing shield assembly 8110 proximal motion; The convexity 810 of wing plate 804 is against the convexity 812 of wing plate 802, thereby prevents wing plate 804 distal motion, and therefore prevents shield assembly 8110 distal motion.
Represented Huber syringe needle of the present invention among Figure 33 and 34.In this embodiment, needle hub 1045 has roughly L shaped, and tether 1075 is roughly parallel to syringe needle 1010, and difference is that it is owing to gravity is somewhat arc.Wing plate 1004 has opening 1002, and needle shield assemblies 10110 (its type is said with reference to figure 16-19) was in this opening 1002 locks in place through bead 10122 before disposing.When needle tip 1025 shielded, bead 10122 made shield assembly to remove from opening 1002.At this moment, tether 1075 is emitted fully, and prevents shield assembly 10110 distal motion.
Figure 35 has represented to comprise the blood collection unit of the shielding part shown in Figure 23-26.Figure 36-48 has represented some optional embodiment.Figure 36 representes that spring 111 is in a side of syringe needle 10, is parallel to needle axis, rather than around syringe needle 10.In Figure 37, spring 111 is a torsionspring, and it provides the twisting resistance around the axis of syringe needle 10.This applies peripheral force on bead 122.Opening 120 is arranged so that bead 122 can carry out circumferential movement towards tube chamber 93.Figure 38 has represented that spring 111 is arranged in the outside of first housing 95.Figure 39 has represented that piston 101 places between spring 111 and the bead 122.In Figure 40, piston 101 is for placing the form of the medicated cap between spring 111 and the bead 122.In this embodiment, spring 111 and can't help medicated cap 100 sealing.
Figure 41 has represented the spring 111 of flap form, and this spring 111 is integral with medicated cap 100.Spring 111 can be and medicated cap 100 separated components perhaps can form with medicated cap 100.Figure 42 has represented to become the spring 111 of insertion waves shim form, and it is enclosed within on the syringe needle 10.
Although sphere is the preferred selection of bead 122, the preferred spheres shaped object is also unnecessary.In the embodiment of Figure 43, roller 102 replaces bead 122.
In Figure 44, groove 75 is lined with metal, so that higher pullout forces is provided, and reduces the undercutting in the conduit 52, thus easier molded catheter hub 52.In this embodiment, metal lining 750 is extensions of metal wedge shape 751, and it makes conduit 86 be fixed on needle hub.Metal lining 750 certainly is independent ring or local ring.
In the embodiment of Figure 48, bead 122 places on the piston 800, this piston 800 abuts needle 10 when non-deployed position.When shielding part was disposed, piston 800 was with bead 122 motions.The size of piston 800 changes according to the specification of syringe needle.Like this, this embodiment makes the bead of a size can be used in various needle sizes.
In the embodiment of Figure 49-51, above-mentioned shield assembly is used for Y shape catheter introducer, and wherein, syringe needle 10 is pulled through barrier film 6000.
Although by the agency of with represented needle shield assemblies, their parts and their application on the differing needles head unit, these explanations are not limited to basic scope of invention.It should be apparent to those skilled in the art that a lot of variations and change.Therefore, needle shield assemblies that constitutes according to the principle of the invention and their parts can be to implement with said especially different mode here.The present invention also limits in accessory claim.
Claims (74)
1. needle assembly comprises:
Syringe needle, this syringe needle comprises longitudinal axis, near-end, sharp distal and outer surface;
Needle shield assemblies, this needle shield assemblies comprises
First housing, this first housing has outer wall and interior lumen, and interior lumen has longitudinal axis; And be sized to make the housing of winning longitudinally to slide along the outer surface of syringe needle; First housing comprises an opening, and first housing forms carrier with this opening, is used to carry the syringe needle obturator;
This syringe needle obturator is carried by carrier;
Spring, this spring is so positioned, and promptly in non-screening-off position, spring is with the longitudinal axis of syringe needle obturator bias voltage to syringe needle;
Wherein, in screening-off position, syringe needle obturator part at least is in the interior lumen, thereby stops sharp distal from needle shield assemblies, to be exposed, and the said opening restriction syringe needle obturator of said carrier is with respect to the radial motion of syringe needle longitudinal axis;
Limiter, this limiter links to each other with needle shield assemblies, is used to prevent that the needle shield assemblies motion from leaving the sharp distal of syringe needle.
2. needle assembly according to claim 1, wherein: carrier is arranged to allow the syringe needle obturator to carry out finite motion towards the longitudinal axis of syringe needle.
3. needle assembly according to claim 1, wherein: carrier is arranged to allow the syringe needle obturator to carry out limited circumferential movement with respect to the longitudinal axis of syringe needle.
4. needle assembly according to claim 1, wherein: carrier is arranged to allow the syringe needle obturator to carry out limited lengthwise movement with respect to the longitudinal axis of syringe needle.
5. needle assembly according to claim 1, wherein: carrier is included in the opening in first housing, is used to hold the syringe needle obturator.
6. needle assembly according to claim 5, wherein: opening extends to interior lumen from outer wall.
7. needle assembly according to claim 5, wherein: the shape and size of opening are arranged to allow the syringe needle obturator to carry out limited radial motion with respect to the longitudinal axis of syringe needle.
8. needle assembly according to claim 5, wherein: the shape and size of opening are arranged to allow the syringe needle obturator to carry out limited circumferential movement with respect to the longitudinal axis of syringe needle.
9. needle assembly according to claim 5, wherein: the shape and size of opening are arranged to allow the syringe needle obturator to carry out limited lengthwise movement with respect to the longitudinal axis of syringe needle.
10. needle assembly according to claim 1, wherein: needle shield assemblies also comprises medicated cap, local at least first housing that covers of this medicated cap.
11. needle assembly according to claim 10, wherein: medicated cap is provided with side holes, and in the first non-screening-off position, the syringe needle obturator is through this side holes protrusion.
12. needle assembly according to claim 1, wherein: spring is the compression spring.
13. needle assembly according to claim 1, wherein: spring is a torsionspring.
14. needle assembly according to claim 1, wherein: spring is coaxial with first housing.
15. needle assembly according to claim 1, wherein: spring is installed on the outer wall of first housing.
16. needle assembly according to claim 1, wherein: spring is arranged to be roughly parallel to the longitudinal axis of syringe needle.
17. needle assembly according to claim 1, wherein: spring is coaxial with syringe needle.
18. needle assembly according to claim 1, wherein: in screening-off position, spring radially limits the syringe needle obturator with respect to the longitudinal axis of syringe needle.
19. needle assembly according to claim 1, wherein: needle shield assemblies comprises extension, and in screening-off position, this extension radially limits the syringe needle obturator with respect to the longitudinal axis of syringe needle.
20. needle assembly according to claim 1, wherein: needle shield assemblies comprises distal wall, and in screening-off position, this distal wall is with respect to the lengthwise movement of the longitudinal axis restriction syringe needle obturator of syringe needle.
21. needle assembly according to claim 5, wherein: the opening in first housing is arranged to prevent that the syringe needle obturator from getting into tube chamber fully.
22. needle assembly according to claim 1, wherein: in screening-off position, tube chamber provides supporting relative with the syringe needle obturator, that be used for syringe needle.
23. needle assembly according to claim 1 also comprises: conduit.
24. needle assembly according to claim 1 also comprises: syringe.
25. needle assembly according to claim 1 also comprises: flutter pinhead device.
26. needle assembly according to claim 1 also comprises: the Huber syringe needle.
27. needle assembly according to claim 1, wherein: the syringe needle obturator is a bead.
28. needle assembly according to claim 1, wherein: the syringe needle obturator is a roller.
29. needle assembly according to claim 1, wherein: syringe needle obturator right and wrong are spherical.
30. needle assembly according to claim 1, wherein: the syringe needle obturator is a bead, and the diameter of bead and syringe needle diameter change with being inversely proportional to.
31. medical treatment device comprises:
Syringe needle, this syringe needle has longitudinal axis, outer surface and sharp distal;
Needle shield, this needle shield comprises:
First housing, this first housing can slide on the outer surface of syringe needle, and comprise outer wall and with the co-axial tube chamber of the longitudinal axis of syringe needle;
The syringe needle obturator;
Be used to carry the carrier of said syringe needle obturator, said first housing comprises an opening, and first housing forms said carrier with this opening;
Spring, this spring apply on the syringe needle obturator radially towards the biasing force of the longitudinal axis of syringe needle;
Wherein, in non-screening-off position, said carrier remains on the syringe needle obturator position of the longitudinal axis that radially leaves syringe needle;
Wherein, When needle shield moves to screening-off position from non-screening-off position, thus the sharp-pointed distal top that makes syringe needle during through the syringe needle obturator, the local at least tube chamber that gets into of syringe needle obturator; Thereby the sharp-pointed distal top of blocking syringe needle; Wherein, in screening-off position, the said opening restriction syringe needle obturator of said carrier is with respect to the radial motion of syringe needle longitudinal axis.
32. medical treatment device according to claim 31, wherein: in non-screening-off position, the syringe needle obturator contacts with the outer surface of syringe needle.
33. medical treatment device according to claim 31, wherein: in non-screening-off position, spring is with the outer surface of syringe needle obturator bias voltage to syringe needle.
34. medical treatment device according to claim 31, wherein: in screening-off position, spring restriction syringe needle obturator prevents that it from radially moving outside the longitudinal axis of syringe needle.
35. medical treatment device according to claim 31; Wherein: needle shield is included in the sidewall of radial outside of the longitudinal axis of syringe needle; When needle shield was in screening-off position, this sidewall restriction syringe needle obturator prevented its radially outwards motion of longitudinal axis with respect to syringe needle.
36. medical treatment device according to claim 31, wherein: shielding part is included in the antetheca in syringe needle obturator distally, and when needle shield was in screening-off position, this antetheca restriction syringe needle obturator prevented its lengthwise movement.
37. medical treatment device according to claim 31, wherein: said carrier restriction syringe needle obturator is with respect to the lengthwise movement of syringe needle longitudinal axis.
38. medical treatment device according to claim 31, wherein: said carrier restriction syringe needle obturator is with respect to the circumferential movement of syringe needle longitudinal axis.
39. medical treatment device according to claim 31, wherein: said carrier restriction syringe needle obturator is with respect to the radial motion of syringe needle longitudinal axis.
40. medical treatment device according to claim 31, wherein: said carrier is included in the opening in first housing, and this opening extends to tube chamber from outer wall.
41. medical treatment device according to claim 31, wherein: needle shield also comprises second housing, local at least first housing and the syringe needle obturator of covering of this second housing.
42. according to the described medical treatment device of claim 41, wherein: second housing comprises opening, when shielding part was in non-screening-off position, the syringe needle obturator was through this opening protrusion.
43. medical treatment device according to claim 31, wherein: the syringe needle obturator has axis, and wherein, when shielding part was in screening-off position, the syringe needle obturator was in the tube chamber, syringe needle obturator axis runout needle axis.
44. medical treatment device according to claim 31, wherein: the syringe needle obturator is a bead.
45. medical treatment device according to claim 31, wherein: the syringe needle obturator is a roller.
46. medical treatment device according to claim 31, wherein: the syringe needle obturator is non-sphere.
47. medical treatment device according to claim 31, wherein: the syringe needle obturator is a bead, and the diameter of bead and syringe needle diameter change with being inversely proportional to.
48. a needle assembly comprises:
Syringe needle, this syringe needle has near-end, sharp distal, longitudinal axis and outer surface;
Needle shield assemblies, this needle shield assemblies comprises:
First housing, this first housing has interior lumen, can on the outer surface of syringe needle, slide;
The syringe needle obturator, this syringe needle obturator has syringe needle obturator axis;
Be used to carry the carrier of said syringe needle obturator, this carrier selectively remains on non-screening-off position and screening-off position with the syringe needle obturator;
First housing comprises an opening, and first housing forms said carrier with this opening, and wherein, in screening-off position, the said opening restriction syringe needle obturator of said carrier is with respect to the radial motion of the longitudinal axis of syringe needle; And
Wherein, in screening-off position, syringe needle obturator part at least is in the interior lumen, and the longitudinal axis of syringe needle obturator axis runout syringe needle.
49. according to the described needle assembly of claim 48, wherein: carrier comprises spring, so that on the syringe needle obturator, provide towards the biasing force of the longitudinal axis of syringe needle.
50. according to the described needle assembly of claim 49, wherein: in non-screening-off position, spring is with the outer surface of syringe needle obturator bias voltage to syringe needle.
51. according to the described needle assembly of claim 48, wherein: in screening-off position, carrier restriction syringe needle obturator prevents that it from radially leaving the longitudinal axis of syringe needle.
52. according to the described needle assembly of claim 48, wherein: in screening-off position, spring restriction syringe needle obturator prevents that it from radially leaving the longitudinal axis of syringe needle.
53. according to the described needle assembly of claim 51, wherein: second housing comprises wall, in screening-off position, this wall restriction syringe needle obturator prevents that it from radially leaving the longitudinal axis of syringe needle.
54. according to the described needle assembly of claim 48, wherein: carrier restriction syringe needle obturator is with respect to the circumferential movement of syringe needle longitudinal axis.
55. according to the described needle assembly of claim 48, wherein: carrier restriction syringe needle obturator is with respect to the lengthwise movement of syringe needle longitudinal axis.
56. according to the described needle assembly of claim 49, wherein: spring is basic coaxial with syringe needle.
57. according to the described needle assembly of claim 48, wherein: the syringe needle obturator is a bead.
58. according to the described needle assembly of claim 48, wherein: the syringe needle obturator is a roller.
59. according to the described needle assembly of claim 48, wherein: syringe needle obturator right and wrong are spherical.
60. according to the described needle assembly of claim 48, wherein: the syringe needle obturator is a bead, the diameter of bead and syringe needle diameter change with being inversely proportional to.
61. a method that in medical treatment device, is used to shield the sharp-pointed distal top of syringe needle, this syringe needle has longitudinal axis, and this method may further comprise the steps:
The syringe needle obturator is provided;
Needle shield assemblies is provided, and this needle shield assemblies comprises first housing, and first housing has an opening, and said first housing is formed for carrying the carrier of said syringe needle obturator with this opening;
Make the syringe needle obturator remain on the non-screening-off position that radially departs from respect to longitudinal axis;
Syringe needle is slided with respect to the syringe needle obturator;
With the syringe needle obturator with respect to the longitudinal axis of syringe needle bias voltage radially;
Make needle shield assemblies move to screening-off position from non-screening-off position, like this, the sharp-pointed distal top of syringe needle is through the syringe needle obturator, and the syringe needle obturator is local at least to be got in the tube chamber, thus the sharp-pointed distal top of blocking syringe needle;
Wherein, in screening-off position, the opening of carrier restriction syringe needle obturator is with respect to the radial motion of syringe needle longitudinal axis.
62. according to the described method of claim 61, wherein: in non-screening-off position, the syringe needle obturator contacts with the outer surface of syringe needle.
63. according to the described method of claim 61, wherein: in non-screening-off position, spring with syringe needle obturator bias voltage to the syringe needle outer surface.
64. according to the described method of claim 61, wherein: keep step to comprise the step of restriction syringe needle obturator with respect to the radial motion of the longitudinal axis of syringe needle.
65. according to the described method of claim 61, wherein: keep step to comprise the step of restriction syringe needle obturator with respect to the lengthwise movement of syringe needle longitudinal axis.
66. according to the described method of claim 61, wherein: keep step to comprise the step of restriction syringe needle obturator with respect to the circumferential movement of syringe needle longitudinal axis.
67. according to the described method of claim 61, wherein: the syringe needle obturator has axis, and in screening-off position, the longitudinal axis of the axis runout syringe needle of syringe needle obturator.
68. a method that in needle shield assemblies, is used to shield the sharp-pointed distal top of syringe needle, this syringe needle has longitudinal axis, and this method may further comprise the steps:
The syringe needle obturator is provided;
First housing is provided, and this first housing has an opening, and first housing is formed for carrying the carrier of syringe needle obturator with this opening;
Make the syringe needle obturator remain on non-screening-off position;
Syringe needle is slided with respect to the syringe needle obturator;
Make the syringe needle obturator move to screening-off position from non-screening-off position, in this screening-off position, the syringe needle obturator departs from the longitudinal axis of syringe needle;
In screening-off position, the said opening restriction syringe needle obturator through carrier moves with respect to the syringe needle longitudinal axis in screening-off position;
Radially move with respect to the syringe needle longitudinal axis through restriction syringe needle obturator and to make the syringe needle obturator remain on screening-off position.
69., also comprise: with the step of syringe needle obturator bias voltage to the longitudinal axis of syringe needle according to the described method of claim 68.
70. according to the described method of claim 68, also comprise: restriction syringe needle obturator is with respect to the step of the circumferential movement of syringe needle longitudinal axis.
71. according to the described method of claim 68, also comprise: restriction syringe needle obturator is with respect to the step of the lengthwise movement of syringe needle longitudinal axis.
72., also comprise:, roughly relatively support the step of syringe needle with the syringe needle obturator in screening-off position according to the described method of claim 69.
73. according to the described method of claim 69, also comprise: select the step of syringe needle diameter and the step of selecting the size of syringe needle obturator, the size of this syringe needle obturator and syringe needle diameter change with being inversely proportional to.
74. according to the described method of claim 69, wherein: the syringe needle obturator is a bead, and this method also comprises the step of selecting the syringe needle diameter and the step of selecting little bulb diameter, the diameter of this bead and syringe needle diameter change with being inversely proportional to.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65921705P | 2005-03-07 | 2005-03-07 | |
| US65922605P | 2005-03-07 | 2005-03-07 | |
| US65921305P | 2005-03-07 | 2005-03-07 | |
| US60/659,217 | 2005-03-07 | ||
| US60/659,226 | 2005-03-07 | ||
| US60/659,213 | 2005-03-07 | ||
| US71495405P | 2005-09-07 | 2005-09-07 | |
| US60/714,954 | 2005-09-07 | ||
| PCT/US2006/007910 WO2006096634A1 (en) | 2005-03-07 | 2006-03-06 | Needle shielding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101137407A CN101137407A (en) | 2008-03-05 |
| CN101137407B true CN101137407B (en) | 2012-09-05 |
Family
ID=39161044
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800074846A Expired - Fee Related CN101137404B (en) | 2005-03-07 | 2006-03-06 | Catheter introducer with needle shield |
| CN2006800075904A Expired - Fee Related CN101137407B (en) | 2005-03-07 | 2006-03-06 | Needle shielding device |
| CN2006800075482A Expired - Fee Related CN101137406B (en) | 2005-03-07 | 2006-03-06 | Method of producing needle shield |
| CN2006800074850A Expired - Fee Related CN101137405B (en) | 2005-03-07 | 2006-03-06 | Winged needle with needle shield |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800074846A Expired - Fee Related CN101137404B (en) | 2005-03-07 | 2006-03-06 | Catheter introducer with needle shield |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800075482A Expired - Fee Related CN101137406B (en) | 2005-03-07 | 2006-03-06 | Method of producing needle shield |
| CN2006800074850A Expired - Fee Related CN101137405B (en) | 2005-03-07 | 2006-03-06 | Winged needle with needle shield |
Country Status (3)
| Country | Link |
|---|---|
| CN (4) | CN101137404B (en) |
| TW (1) | TWI375578B (en) |
| ZA (4) | ZA200707220B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2806667C (en) * | 2010-07-15 | 2018-08-07 | Sanjiv Kumar | I.v. infusion or blood collection apparatus |
| JP2014517729A (en) * | 2011-04-07 | 2014-07-24 | アースキン メディカル エルエルシー | Needle shield |
| GB2498772A (en) * | 2012-01-27 | 2013-07-31 | Owen Mumford Ltd | Lancing device moving lancet needle in longitudinal and lateral directions, lancet needle and lancing device with anti-recocking means |
| ITMO20130211A1 (en) * | 2013-07-22 | 2015-01-23 | Delta Med Spa Unipersonale | BUTTERFLY NEEDLE WITH PROTECTION DEVICE |
| US20160008582A1 (en) * | 2014-07-08 | 2016-01-14 | Becton, Dickinson And Company | Peripheral intravenous catheter with winged grip |
| CN105363098B (en) * | 2015-12-18 | 2018-10-19 | 杭州富善医疗器械有限公司 | A kind of anti-venous indwelling needle |
| US20180140321A1 (en) | 2016-11-23 | 2018-05-24 | C. R. Bard, Inc. | Catheter With Retractable Sheath And Methods Thereof |
| KR20210006932A (en) * | 2018-05-01 | 2021-01-19 | 벡톤 디킨슨 앤드 컴퍼니 | Blood collection set operated by compression |
| CN110694141A (en) * | 2019-10-15 | 2020-01-17 | 苏州林华医疗器械股份有限公司 | Needle-prick-proof and damage-free needle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059180A (en) * | 1989-11-21 | 1991-10-22 | Mclees Donald J | Automatic needle tip guard |
| US5322517A (en) * | 1989-02-01 | 1994-06-21 | Sero-Guard Corporation | Disposable automatic hypodermic needle guard |
| US5697907A (en) * | 1993-07-20 | 1997-12-16 | Graphic Controls Corporation | Safety catheter |
| US6860871B2 (en) * | 2001-04-30 | 2005-03-01 | Injectimed, Inc. | Needle tip guard for percutaneous entry needles |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4596563A (en) * | 1983-06-09 | 1986-06-24 | Cordis Corporation | Thin-walled multi-layered catheter having a fuseless tip |
| US5215528C1 (en) * | 1992-02-07 | 2001-09-11 | Becton Dickinson Co | Catheter introducer assembly including needle tip shield |
| US5300045A (en) * | 1993-04-14 | 1994-04-05 | Plassche Jr Walter M | Interventional needle having an automatically capping stylet |
| CN2181300Y (en) * | 1993-12-07 | 1994-11-02 | 黄嘉欣 | Safety cover for butterfly needle |
| JP3245843B2 (en) * | 1994-01-21 | 2002-01-15 | ニプロ株式会社 | Indwelling needle with wing |
| US5879337A (en) * | 1997-02-27 | 1999-03-09 | Injectimed, Inc. | Needle tip guard for hypodermic needles |
-
2006
- 2006-03-06 CN CN2006800074846A patent/CN101137404B/en not_active Expired - Fee Related
- 2006-03-06 CN CN2006800075904A patent/CN101137407B/en not_active Expired - Fee Related
- 2006-03-06 CN CN2006800075482A patent/CN101137406B/en not_active Expired - Fee Related
- 2006-03-06 CN CN2006800074850A patent/CN101137405B/en not_active Expired - Fee Related
- 2006-03-07 TW TW95107587A patent/TWI375578B/en not_active IP Right Cessation
-
2007
- 2007-08-27 ZA ZA200707220A patent/ZA200707220B/en unknown
- 2007-08-27 ZA ZA200707218A patent/ZA200707218B/en unknown
- 2007-08-27 ZA ZA200707248A patent/ZA200707248B/en unknown
- 2007-08-27 ZA ZA200707219A patent/ZA200707219B/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5322517A (en) * | 1989-02-01 | 1994-06-21 | Sero-Guard Corporation | Disposable automatic hypodermic needle guard |
| US5328482A (en) * | 1989-02-01 | 1994-07-12 | Sero-Guard Corporation | Catheter with automatic needle guard |
| US5059180A (en) * | 1989-11-21 | 1991-10-22 | Mclees Donald J | Automatic needle tip guard |
| US5697907A (en) * | 1993-07-20 | 1997-12-16 | Graphic Controls Corporation | Safety catheter |
| US6860871B2 (en) * | 2001-04-30 | 2005-03-01 | Injectimed, Inc. | Needle tip guard for percutaneous entry needles |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200707218B (en) | 2008-09-25 |
| CN101137404A (en) | 2008-03-05 |
| ZA200707219B (en) | 2008-12-31 |
| CN101137406B (en) | 2010-11-24 |
| CN101137404B (en) | 2010-11-24 |
| CN101137405B (en) | 2010-10-20 |
| TW200702006A (en) | 2007-01-16 |
| ZA200707220B (en) | 2008-10-29 |
| CN101137406A (en) | 2008-03-05 |
| TWI375578B (en) | 2012-11-01 |
| ZA200707248B (en) | 2008-09-25 |
| CN101137405A (en) | 2008-03-05 |
| CN101137407A (en) | 2008-03-05 |
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