CN101137405A

CN101137405A - Winged needle with needle shield

Info

Publication number: CN101137405A
Application number: CNA2006800074850A
Authority: CN
Inventors: 蒂莫西·J·厄斯金
Original assignee: Erskine Medical LLC
Current assignee: Erskine Medical LLC
Priority date: 2005-03-07
Filing date: 2006-03-06
Publication date: 2008-03-05
Anticipated expiration: 2026-03-06
Also published as: TW200702006A; ZA200707218B; CN101137404B; ZA200707220B; ZA200707219B; CN101137407A; CN101137406B; TWI375578B; CN101137405B; CN101137407B; CN101137406A; CN101137404A; ZA200707248B

Abstract

The present invention discloses a flutter pinhead device, which is arranged with tract and opposite alar plate; the alar plate can be grasped among fingers so as to insert the pinhead into human body. The flutter pinhead device is arranged with finned component which can rotate around the pinhead axes. The finned component drives the pinhead shielding piece towards the rotation of an alar plate, the pinhead shielding piece moves towards far side along the pinhead. In one embodyment instance, the pinhead shielding piece includes blockage (such as ball), biasing spring and holding machine for blockage.

Description

Winged needle with needle shield

The cross reference of related application

Present patent application requires the priority of following temporary patent application, and present patent application clearly comprises these temporary patent applications by the reference mode:

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 JIUYUE in 2005 7 days.

Background technology

Present patent application relates to the medical treatment device that is used to collect blood or other body fluid or infused fluid, and this device uses syringe needle to pierce through human body or animal body.It comprises the device that is used to shield this syringe needle.

Summary of the invention

One embodiment of the present of invention are a kind of flutter pinhead device, and it has housing, and this housing has at least one outwardly directed wing plate (preferably two).Fin component is fixed on the housing.Fin component is oriented roughly radially outward with respect to the longitudinal axis of syringe needle, and can rotate to the secondary shielding position from the first non-screening-off position with respect to housing.Needle shield assemblies is mounted to respect to housing and makes that needle shield assemblies can be along the syringe needle longitudinal sliding motion.When fin component when the first non-screening-off position rotates to the secondary shielding position, needle shield assemblies is come release by relieving mechanism, and can slide with respect to housing along needle shaft, thus the shielding syringe needle.In the first non-screening-off position, fin component is oriented near normal to becoming to be similar to 60 degree with vertical direction.Wing plate is movable, and can shift to fin component (perhaps rotation or folding) when fin component is in the first non-screening-off position.Spring with the needle shield assemblies bias voltage to the secondary shielding position.Wing plate can be with respect to the housing rotation so that when fin component be in the first non-screening-off position, and wing plate can be shifted to fin component.

Description of drawings

Fig. 1 comprises that device of the present invention is at needle shield deployment (deployment) isometric view before;

Fig. 2 comprises the isometric view of device of the present invention after needle shield is disposed;

Fig. 3 comprises the cutaway view of device of the present invention before needle shield is disposed;

Fig. 4 comprises the isometric cross-sectional view of device of the present invention before needle shield is disposed;

Fig. 5 comprises the sectional side view of device of the present invention after needle shield is disposed;

Fig. 6 comprises the isometric cross-sectional view of device of the present invention after needle shield is disposed;

Fig. 7 comprises the side view of device of the present invention before needle shield is disposed;

Fig. 8 is the cutaway view that passes the section A-A among Fig. 7;

Fig. 9 is the isometric view of a part that comprises the needle shield actuator of device of the present invention;

Figure 10 is the isometric view of far-end of part that is used for comprising the needle shield of device of the present invention.

The specific embodiment

Introduce the preferred embodiment of the present invention that is used for blood collection device below.Similar structures can be used for infused fluid.The purposes of blood collection device 5 is to use syringe needle 10 to thrust blood vessel (or other organ), and by pipe 15 blood (or other fluid) is taken out in the container.This device uses the technology described in U.S. Provisional Patent Application No.60/659213,60/659217 and 60/659226, and they all are incorporated herein by reference.

The preferred embodiment of device is made up of the following basic element of character:

Housing 20 has

wing plate

225 and 230;

Syringe needle 10, this syringe needle 10 is fixed on the needle hub 50, and is communicated with pipe 15 fluids;

Needle shield assemblies 110; And

Actuator assemblies 30, this actuator assemblies 30 has rotatable fin 300.

Housing 20 has roughly cylindrical body 200, this roughly cylindrical body 200 far-end 205 and near-end 210 are arranged.Far-end 205 has opening 215.Near-end 210 has opening 220.Passage 236 extends between the opening of near-end and far-end.Passage 236 is sized to make shield assembly 110 to adapt to wherein vertically, and shield assembly 110 can endwisely slip along it.Housing 20 is provided with

wing plate

225 and 230, and this

wing plate

225 and 230 can make progress toward each other and fin 300 bendings on the actuator assemblies 30.Fillet piece 227 is convenient to

wing plate

225 and 230 and housing 20 molded.Be provided with identical fillet piece and come stabilizing fin 230.

Wing plate

225 and 230 is respectively arranged with recessed portion 250 and 255.Their shape and size are suitable for holding fin 300.Enclosure body 200 is provided with slit 260, and this slit 260 is designed to be contained in the key 190 (back will be introduced) on the shield assembly 110.The far-end 205 (slit 260 in this far-end 205 places sealing) of slit 260 from near-end 210 (slit 260 is at these near-end 210 openings) towards enclosure body 200 extends.Slit 260 has near-end 265 and far-end 270.

Needle hub 50 has stepped proximal end 550, and this stepped proximal end 550 forms hollow opening cylinder 555, and the opening 215 in the near-end 210 of this hollow opening cylinder 555 and enclosure body 200 cooperates.Step forms flange 570.Stepped proximal end 550 is provided with slit 560 (see figure 6)s, and this slit 560 aligns with slit 260, and from flange 570 along cylinder 555 openings that extend to it.Slit 560 also holds key 190.Slit 560 is opening forwardly, so that make the key 190 can be at its internal motion, and this slit 560 leaves it in rear closure so that prevent key 190.

The near-end 75 of syringe needle 10 is adhesive in the needle hub 50.Rear end 565 is opening cylinders that proximad extends, and this opening cylinder design Cheng Yuguan 15 cooperates, and collects thereby make fluid can flow through syringe needle 10 and pipe 15 and flow into container.

Fin component 30 has cylindrical body section 350, and this cylindrical body section 350 has near-end 365 and far-end 360.Near-end 365 and far-end 360 are respectively arranged with opening 366 and 367.Passage 370 extends between near-end and far-end.Passage 370 has inner surface 372.Fin component 30 is assemblied on the cylindrical body 200 with one heart, and can be around the axis rotation of cylindrical body 200, and this rotation is subjected to the restriction of wing plate 225 and 230.Inner surface 372 is being provided with circumferential rim 375 near near-end 365 places.Have part to be removed on the wheel rim 375, thereby form opening 380 and 382 (only having represented that 380,382 is similar with 380 substantially), this opening 380 and 382 is sized to allow key 190 to pass through.These openings start from becoming approximately+70 to spend and-70 degree with vertical direction, and have formed the circular arcs of about 30 degree.When fin component 30 is in primary importance, wheel rim 375 blocks key 190.In this primary importance, when key 190 was subjected to wheel rim 375 and stops, fin 300 was vertical.When fin 300 clockwise or when being rotated counterclockwise, cylindrical body section 350 (so wheel rim 375) is around the axis rotation of body part 200.When fin component 30 rotated to the second position (becoming about 60 degree clockwise or counterclockwise with vertical direction to the position that becomes about 90 degree with vertical direction) that makes key 190 and opening 380 or 382 (deciding according to direction of rotation) align, key 190 was freely distad advanced in slit 260.When such, under the effect of the helical spring 180 of cylindrical body 112 inwalls 114, needle shield assemblies 110 is moved along distal direction, thus the shielding syringe needle.

Therefore, the part that is combined to form trigger mechanism of wheel rim 375 and key 190, this excitation mechanism make shield assembly can be in the time will shielding syringe needle 10 release and move along distal direction.

When fin 300 rotated to position against wing plate 225 or fin 230, fin 300 can be fixed on patient's the skin.For this reason, fin 300 can be provided with splicing tape.Needle shield assemblies 110 has cylindrical body 112, and this cylindrical body 112 has near-end 120 and far-end 115.Tube chamber 117 extends between near-end 120 and far-end 115, and is sized to be suitable for axially hold syringe needle 10 so that it can slide on syringe needle 10.Needle shield assemblies 110 axially is assembled in the enclosure body 200 so that it can endwisely slip along passage 236.Near-end 120 is provided with key 190.As mentioned above, key 190 is assembled in slit 260 and the slit 560.Key 190 prevents that shield assembly 110 is with respect to enclosure body 200 rotations.When it during against the far-end of slit 260, it prevents that also shield assembly 110 from leaving the opening 220 of enclosure body 200 along proximal direction.

There is stop mechanism 116 at far-end 115 places in needle shield assemblies, in case be used for making syringe needle 70 shieldings just to prevent that shield assembly from sliding backward.Near-end 115 has stepped portion 150, promptly with all the other cylindrical sections of cylindrical body 112 zone of reducing of diameter group mutually.Tube chamber 117 diameter in stepped portion 150 also reduces (comparing with the diameter of tube chamber 117).In this zone, tube chamber 117 is called tube chamber 118.The diameter of tube chamber 118 is the external diameter less times greater than syringe needle 10.Helical spring 111 is through on the stepped portion 150.The rear end of helical spring 111 is resisted against on the wall 114 of the intersection that is formed at stepped portion 150 and cylindrical body 112 remainders.Helical spring 111 is compression springs, and this compression spring applies axial force along proximad and distal direction.Stepped portion 150 also is provided with opening 160, and the form of 160 one-tenth special shape slits of this opening is along approximate far-end 115 (see figure 10)s that extend to cylindrical body 112 from the mid point of stepped portion 150 of distal direction.The size and dimension of this opening 160 is arranged so that ball 122 is placed in one, and the part of ball 122 stretches in the tube chamber 118 of cylindrical body 112 and the outer surface 11 of abuts needle 10.Power in the helical spring 111 makes ball 122 keep being pressed against on the syringe needle 10.Like this, shield assembly 110 can be in very situation lower edge syringe needle 10 slips of less friction.The size and dimension of opening 160 also is arranged so that when ball 122 no longer during abuts needle 10 (be top through ball 122), ball 122 can be distad towards far-end 115 motions of cylindrical body 112, and further radially enter in the tube chamber 118, thereby stop the axially-movable of syringe needle 10 along distal direction.This is described in greater detail below.

Medicated cap 100 is a metallic stamping pieces, is sized to be sleeved on the stepped portion 150, thus sealing helical spring 111.Medicated cap 100 is provided with opening 170, and this opening 170 is sized to make that the part of ball 122 can be assemblied in wherein when syringe needle 10 abut ball 122, but ball 122 can not be escaped from by it.The size of medicated cap 100 can be restricted, so that be sleeved on the far-end 115 of cylindrical body 110, perhaps it can extend along the whole length of cylindrical body 115, as a whole sheath.

In the back of stepped portion 150, helical spring 180 is in the tube chamber 117 of cylindrical body 112.Helical spring 180 is the compression spring, and the power of this compression spring axially applies along proximal direction and distal direction.The far-end 191 of helical spring 180 is resisted against on the back side of inwall 114 and just in the back of stepped portion 150.The proximal face 552 of the near-end 195 abuts needle hub sleeves 50 of helical spring 180 (promptly in flange 570 zones) still in cylinder 555 inside.Therefore, helical spring 180 is stuck in cylindrical body 112 interior and housing 20 inside of shield assembly 110.When shield assembly 110 was in its non-activation point, helical spring 180 was a compressive state.

To introduce the operation of stop mechanism 116 below.Needle tip 70 has the beveled top, has two inclined-planes, i.e. first inclined-plane 71 and second inclined-plane 72.When needle shield assemblies 110 when the length distal direction of syringe needle 10 is slided, ball 122 aligns with inclined-plane 71.When ball 122 ran into inclined-plane 71, it still less was subjected to the radially restriction of syringe needle 10, and its radial axis towards syringe needle 10 under the effect of the power of helical spring 111 is moved.Like this, ball 122 leaves the opening 170 in the medicated cap 100, and further radially inwardly enters in the tube chamber 118.Edge 155 pivots that ball 122 gets around mouth 170 rotate, and distad slide along the length of opening 160.When second inclined-plane alignd with ball 122, it moved far as far as possible in opening product 160 and is located immediately at above second inclined-plane 72.At this moment, it enters in the tube chamber 117 as far as possible far, is subjected to the constraint of the far-end 101 of the size of opening 160 and medicated cap 100.Spring 111 expands, and radial constraint ball 122 at this moment.Ball 122 is occludes lumen 118 partly, thereby stop needle tip 70 by with prevent that thereby shield assembly 110 from back being spurred exposed needle top 70.

At this moment, key 190 arrives the far-end 270 of slit 260, like this, prevents that shield assembly 110 is with respect to syringe needle 10 further distal motion.70 distance is arranged so that when align with ball 122 in top 70 from key 190 to needle tip, has enough spaces to be used for making ball 122 to move at opening 160 below medicated cap 100.When the local at least position of stopping up tube chamber 118 that ball 122 moves to it, the upper surface 136 of the far-end 101 of medicated cap 100 (be needle shield assemblies 110, just in the part of the radial outside of ball 122, ball 122 is against this part when shielding part is disposed) and ball 122 tangent angulation α.This can see in Fig. 5.This angle [alpha] is set to the value less than the smallest bevel angle beta of needle tip 70 (being inclined-plane 72 in this example).Among the described here embodiment, be about zero degree in the upper surface 136 and the angle [alpha] between the ball 122 of far-end 101.When this angle is too big with respect to angle beta, ball 122 will can not be stuck.The far-end 158 of stepped area 155 and medicated cap 100 are sized to protruding so that top 70 can not be exposed from shield assembly 110.Also can use a plurality of balls, these balls are arranged in a plurality of openings identical with opening 160 and 170.Like this, protruding length can reduce.

After disposing but before syringe needle 10 distal motion, the part of ball 122 is in the tube chamber 118, and its part is pushed against far-end 101 inboards of medicated cap 100 by spring 111.The top of ball 122 be in medicated cap 100 far-end 101 upper surface 136 below.In optional embodiment, expansible spring 111 is sealed opening 170.When syringe needle 10 distal motion, it is with abut ball 122, and this ball 122 will press 101 inboards, end of medicated cap 100.Therefore will prevent syringe needle 10 further distal motion like this, and prevent that needle tip 70 from exposing from shield assembly 110.

Tube chamber 118 is sized to make syringe needle 10 to be assemblied in wherein closely.Like this, when syringe needle 10 distal motion (being shield assembly 110 proximal motion) and ball 122 abut needle tip 70, syringe needle 10 will can not leave ball 122.Like this, tube chamber 170 provides the supporting relative with ball 122, so that prevent syringe needle 10 swings, thereby and prevents that top 70 motions from thrusting in the wall of tube chamber 118.

In optional embodiment, ball 122 enters in the tube chamber 118 fully.At this moment, the diameter of ball 122 is less times greater than the diameter of tube chamber 118.Then, ball 122 is subjected to the axial constraint of tube chamber 118 and syringe needle 10.In this example, the size of tube chamber 118 also is arranged to provide and ball 122 supportings relative, that be used for syringe needle 10, thereby prevents syringe needle swing and prevent that top 70 from thrusting in the wall of tube chamber 118.

The distance of ball 122 motions equals the amount that its opening 155 from medicated cap 100 protrudes at least.When shielding part was disposed, the amount that ball 122 stretches in the tube chamber 118 was approximately equal to this distance.This makes the part of tube chamber 118 not block.When the syringe needle that uses than small dimension, need bigger ball, so that enough occludes lumen 118, thereby prevent top 70 from passing the not obstruction part of tube chamber 118 and stretch out, and make ball 122 to stretch into the opening 160 from the surface of syringe needle 10.By making medicated cap 100 littler and use the ball of same size, also can obtain same effect.When using the syringe needle of big specification (when syringe needle has than major diameter), ball can be littler.

Device 5 is assembling as follows:

1. needle shield assemblies 110 enters the housing 20 from the near-end 210 of housing 20.Key 190 aligns with the slit 260 of housing 20.

2. fin component 30 near-end 210 from housing 20 on housing 20 begins to slide.In this step process, fin 300 becomes about 60-90 degree with vertical direction, thereby opening 380 or opening 382 are alignd with key 190.Fin component 30 rotates to the upright position again, key 190 is locked in the back of wheel rim 375.

3. spring 180 also places tube chamber 117 inside of shield assembly 110 from the near-end 210 of housing 20.The rear portion of the wall 114 of the far-end 190 abuts needle shielding parts of spring 180.

4. needle hub 50 is stuck in or is adhesive on the near-end 210 of housing 20, thus compression spring 180.Slit 570 in the cylindrical wall of hub sleeve 50 aligns with slit 260 on the housing 20.

5. syringe needle 10 penetrates in the hole 113 of needle shield assemblies 110 by tube chamber 118,117 and spring 180, and is adhesive in the needle hub 55.

6. managing 15 is adhesive in the near-end 555 of needle hub 55.

Device uses as follows:

The user catches

wing plate

225 and 230 between his or her finger tip, and they are drawn close, thereby they are contacted with fin 300.Also can select, device can be simply by catching fin 300 to maintain between finger tip.Therefore, in fin 300, provide fingerhold portion.When coming holding device with in these two kinds of methods any one under the situation that is in vertical (first) position at fin 300, the user utilizes needle tip 70 to thrust patient skin and blood vessel.Can flow through syringe needle in case thrust in the blood vessel with blood, the user just makes fin 300 downwards towards

wing plate

225 or 230 rotations, thereby decontrols key 190 (second position).Like this, needle shield assemblies 110 is freely endwisely slipped on syringe needle along distal direction by spring 180 pushings.Fin 300 is arranged in

otch

250 or 255, and like this, it is concordant with relevant wing plate.When collecting blood,

wing plate

225 and 230 and fin 300 can be connected on the patient skin.

In this blood collecting (second) position, needle shield assemblies 110 endwisely slips along distal direction owing to the power of spring 180.The far-end 115 of needle shield assemblies leans against on the patient skin.When needle tip 70 was return, the far-end 115 of needle shield assemblies was still in the motion of the effect lower edge of spring 180 distal direction, till it is shielded fully when take out in the patient body on top 70.

Prevent that at the shielding body of needle tip needle shield assemblies 110 from sliding and needle tip 70 is exposed once more along proximal direction.Key 190 is against the far-end 270 of slit 260, thereby prevents needle shield assemblies 110 distal motion.Like this, syringe needle 10 is shielded fully.Even when fin 300 back rotated to primary importance (so that take out syringe needle 10) in the patient body, shield assembly 110 can not be return, stop and prevent proximal motion because it is subjected to ball 122.Key 190 moves to the distally with respect to circumferential rim 375.

Although introduced especially and represented winged needle assemblies, their parts and the limited embodiment of their application on the differing needles head unit, these explanations are not meant to limit basic scope of invention.Those skilled in the art will know a lot of variations and change.Therefore, should also be appreciated that winged needle assemblies that constitutes according to the principle of the invention and their parts can be to implement with described especially different mode here.The present invention also limits in below the claim.

Claims

1. medical needle assembly comprises:

Syringe needle, this syringe needle comprises longitudinal axis, near-end, sharp distal and outer surface;

Housing, this housing have at least one outward extending wing plate;

Fin component, this fin component are fixed on the housing so that fin component roughly radially outwards is oriented with respect to the longitudinal axis of syringe needle, and can rotate to the secondary shielding position from the first non-screening-off position with respect to housing;

Needle shield assemblies, this needle shield assemblies are mounted to respect to housing and make that needle shield assemblies can be along the syringe needle longitudinal sliding motion;

Relieving mechanism, this relieving mechanism be associated with fin component and needle shield assemblies so that when fin component when the first non-screening-off position rotates to the secondary shielding position, the needle shield assemblies release, and can slide with respect to housing along needle shaft, thereby the shielding syringe needle.

2. needle assembly according to claim 1, wherein: in the first non-screening-off position, fin component is oriented near normal to becoming to be similar to 60 degree with vertical direction.

3. needle assembly according to claim 1, wherein: wing plate is movable so that wing plate can be shifted to fin component when fin component is in the first non-screening-off position.

4. needle assembly according to claim 3, wherein: wing plate can rotate towards fin component.

5. needle assembly according to claim 3, wherein: wing plate can be folding towards fin component.

6. needle assembly according to claim 1, wherein: housing is provided with the second outward extending wing plate.

7. needle assembly according to claim 1 also comprises: spring, this spring with the needle shield assemblies bias voltage to the secondary shielding position.

8. needle assembly according to claim 6, wherein: wing plate can be with respect to the housing rotation so that when fin component be in the first non-screening-off position, and wing plate can be shifted to fin component.

9. medical needle assembly comprises:

Housing, this housing have a pair of outward extending wing plate, and this is arranged to toward each other wing plate, and can move toward each other with respect to housing;

10. needle assembly according to claim 9, wherein: in the first non-screening-off position, fin component is oriented near normal to becoming to be similar to 60 degree with vertical direction.

11. needle assembly according to claim 9, wherein: wing plate is movable so that wing plate can be shifted to fin component when fin component is in the first non-screening-off position.

12. needle assembly according to claim 11, wherein: wing plate can rotate towards fin component.

13. needle assembly according to claim 11, wherein: wing plate can be folding towards fin component.

14. needle assembly according to claim 9 also comprises: spring, this spring with the needle shield assemblies bias voltage to the secondary shielding position so that when fin component rotated to the secondary shielding position, needle shield moved on syringe needle.

15. needle assembly according to claim 9, wherein: wing plate can be with respect to the housing rotation so that when fin component be in the first non-screening-off position, and wing plate can be shifted to fin component.

16. a medical needle assembly comprises:

Housing, this housing have at least one outward extending wing plate;

Needle shield assemblies, this needle shield assemblies are mounted to respect to housing and make that needle shield assemblies can be along the syringe needle longitudinal sliding motion, and this needle shield assemblies comprises whole sheath;