Disposable blood sampling collection from heel deviceTechnical field
The utility model belongs to medical instruments field, and in particular to a kind of disposable blood sampling collection from heel device.
Background technique
Neonatal heel blood screening refers to acquires the inspection that Heel blood carries out after baby due 72 hours.Mainly for hairSick rate is higher, early stage non-evident sympton but has laboratory positive indication, can make a definite diagnosis and treatable disease.China at presentThe project for being included in screening range has congenital hypothyroidism and phenylketonuria.
In some cases, such as from neonatal palm root it extracts small part blood or requires more volume hereWhen blood, it may be necessary to different blood sampling movements.It can be for cutting off capillary instead of the cutoff action of linearly piercing movementIt is beneficial.Therefore there are a variety of designs of hemostix, the hemostix uses blade rather than needle, and substantially described in rotationBlade to promote blade by the hole in the shell of hemostix, with cut skin generate blood in skin can be by skin tableThe short slit or notch in face.In the hemostix of rear seed type, construction generally it is more complicated, using blade rather than needle, andAnd the hemostix also typically uses the arrangement that the pivot to promote blade to follow curved path is driven by torque spring.
The patent of the U.S. the 4157086th discloses a kind of arrangement, and wherein torque spring is predetermined and can to promoting blade to carry outIt repeats mobile pin and applies rotation driving.
The patent of the U.S. the 5527333rd discloses a kind of arrangement, and wherein user presses trigger member element, the trigger member memberPart extends the spring not stressed initially, to stretch the spring against the biasing of the spring, with blade prominent from shell.CauseThis, blade presses trigger member by user rather than is moved forward by the strain energy of release storage in the spring.
The patent of the U.S. the 2823677th discloses a kind of hemostix driven by torque spring.
The patent of the U.S. the 2007/0095178th discloses blade and is connected to crank connector by the spring of crosswise movementHemostix.Triggering hemostix is covered in trigger member by pressing, the trigger member lid biases and then discharges connector.
The patent of the U.S. the 5571132nd discloses a kind of arrangement, wherein applying input power without passing through release by userStrain energy pushes ahead blade along scheduled path.
The patent of the U.S. the 4643189th discloses a kind of arrangement, wherein spring rotate or crosswise movement drives bladeTo realize notch.
Application number: 201380016334.1 utility model discloses a kind of hemostix, including blood taking needle main body, described to adoptBlood needle main body is elongated form and has the pointed tip being located at its front end；Driving spring, the driving spring are used forLongitudinal movement is substantially sent to the blood taking needle main body and shell, the shell receives the blood taking needle main body and at itThere is hole, when hemostix is triggered, it is prominent that the pointed tip of blood taking needle main body passes through the hole when in use at front end.Blood samplingDevice includes laterally being moved from the movement of hole control blood taking needle main body when prominent with promoting the tip of blood taking needle to execute for tipDynamic device.Cutoff action is applied to the tool with cut edge and properly uses portrait orientation by the hemostixSpring, the spring occurs to strain so that forward motion power is applied to blood taking needle, to drive the blood taking needle to realize notch, thusBenefit from many benefits of previously mentioned hemostix.The other target of the utility model, which is to provide, uses improved needle sectionRealize the hemostix of cutoff action.
Application number: the utility model of 201420410955.X discloses disposable newborn vola hemostix, including blood samplingNeedle installs shell, and driving lever, blood sampling blade are provided in mounting shell body, and driving lever passes through central axis and installation inner walls centerRotation connection, driving lever includes shift lever end, the body of rod, and shift lever end exposure is external in mounting shell, it is characterised in that: the blood taking needle installationBe arranged on shell and the shell of shift lever end opposite end it is fluted, bottom portion of groove be provided with blood sampling hole, the body of rod by elastic support withBlade of taking a blood sample connects, and blood sampling blade passes through limit guide rail and compresses fixation.The utility model efficiently solves traditional blood taking needle, in babyIt in child's blood collection procedure, can not be accurately positioned, it is sometimes desirable to blood sampling be repeated several times, reduce blood sampling efficiency, also increase simultaneouslyThe feeling of pain of patient.
Application number: 201610705561.0 patent discloses a kind of blood sampling collection from heel device, comprising: shell, front end are equipped withThe edge of a knife out, one side are equipped with installing port；Setting in installing port location triggered part, trigger member in a manner of inwardly moveable forward withShell forms connection；Rack member and excitation gear, rack member including engagement connection are installed in shell along front and back is slideable,The rear end connection excitation spring of rack member, excites the rear end of spring to connect with the intracorporal spring structure of shell is located at, excitation gear is logicalThe the first support axis connection crossing connection long hole and being immobilized in the shell is equipped with limit opening in the rear end of excitation gear, in shellIt is equipped with limit inserted block in vivo, blade is installed in the front end of excitation gear；Swing arm is controlled including triggering, triggering control swing arm can turnDynamic formula be installed on be arranged in intracorporal second support shaft of shell, using second support shaft position as separation, triggering control swing arm byFirst arm section and the second arm section are constituted.It is excellent that this blood sampling collection from heel device has that easy to operate, feed velocity is fast, pain in collecting sense is lowPoint.
Utility model content
The utility model provides that a kind of structure is simple, easy to use and laborsaving, pain is few after blood sampling, wound healing is fast oneSecondary property uses blood sampling collection from heel device.
The technical solution of the utility model includes:
Disposable blood sampling collection from heel device, including shell, torsional spring, trigger member, four-bar linkage structure and blade；The shell byTwo half shells are fastened and connected to be formed, and the lower end surface of the shell is equipped with the edge of a knife, and the side of shell upper end is equipped with installing port.
The trigger member includes triggering push handle and push handle block, and in the state of to be excited, the rear end trigger arm is located at shellIt is connected together in vitro with the formation of push handle block；The installing port position of shell is arranged in and with inwardly removable forward in the triggering push handleDynamic mode and shell, which is formed, to be connected, and triggering push handle includes hand touching push handle part and triggering arm section outside shell；It is describedTriggering arm section includes front end trigger arm and rear end trigger arm.
In the state of to be excited, the rear end trigger arm is located at outer formed with push handle block of shell and is connected together, and reducesThe risk that maloperation causes blood taking needle to fail.
The corresponding part of the medial surface on the top of described two half shells is respectively equipped with positioning support muscle, the shell, shellThe positioning support muscle on installing port and two half shells on body forms aligning receptacle, and the triggering arm section is inserted along interior positioningMouth is mobile.
Support shaft and spring structure are equipped in one of half shell, the upper end of the torsional spring is hook, the torsionThe lower end of spring is straight torsion arm, and the lower end of the torsional spring is fixed by spring structure；The support shaft includes the first supportAxis and the second support shaft；The torsion spring set is in the first support shaft；The spring structure includes two limited blocks, described two limitsPosition block is located on the inner surface of shell, card slot is formed between two limited blocks, the straight torsion arm is located in card slot.
The four-bar linkage structure includes active push rod, driven push rod and articulated linkage, and the active push rod is rotatably setTorsional spring upper end is set in the first support shaft and is located at, the lower surface at the rear portion of the active push rod is equipped with the first circular cylindrical projectionIt rises, torsional spring hooks first cylindrical protrusions；The upper surface at the rear portion of the active push rod and the front of driven push rodHinge, the upper surface hinge at the rear portion of the lower surface and articulated linkage at the rear portion of the driven push rod, before the articulated linkagePortion is spindle rotationally arranged in the second support shaft, and the blade is embedded in the upper surface of driven push rod；
Preferably, first support shaft includes the cylinder that shell inner surface is arranged in and the roundlet that cylindrical center is arranged inColumn, for the torsion spring set on cylinder, the middle part of the active push rod is equipped with first through hole corresponding with small column.
Preferably, the upper surface at the rear portion of the active push rod be equipped with the second cylindrical protrusions, the driven push rodFront is equipped with the second through-hole corresponding with the second cylindrical protrusions, and the left side of the lower surface at the rear portion of the driven push rod is equipped withThird cylindrical protrusions, the front of the articulated linkage is equipped with third through-hole corresponding with the second support shaft, described hingedly to connectThe middle part of bar is equipped with fourth hole corresponding with third cylindrical protrusions；The upper end at the driven push rod rear portion is equipped with and bladeThe vertical section of the groove that shape matches, the driven push rod is Z-shaped, facilitates installation, also can preferably realize that double leval jib drivesIt is dynamic.
Preferably, it is provided with multiple inserting columns on the edge of a half shell, is set on the edge of another half shellThere are multiple plug-in openings, two half shells cooperatively form detachable be fixedly connected with tight insert of plug-in opening by inserting column；It is describedThe lower end surface of shell is plane.
Two half shells are detachable, which to be fixedly connected, can make to install very convenient, and the lower end surface of the shell is plane,Hemostix can be made preferably to contact with infant skin.
The medial surface on the top of described two half shells is equipped with rectangular preiection, can when blood sampling collection from heel device, which excites, to be completedTo prevent triggering push handle from taking out out of shell, prevent blood sampling collection from heel device from reusing.
The triggering push handle is located at the width of the touching of the hand outside shell push handle part, the width of push handle block and shell upper surfaceEquivalent width, the height of hand touching push handle part is greater than the height of installing port, not only easy to use, but also adopts heelBlood device is more aesthetically pleasing.
The utility model have the advantage that and the utility model has the advantages that
1. the utility model drives four-bar linkage structure by torque spring to promote blade that curved path arrangement is followed to complete oneSecondary property uses blood sampling collection from heel device, has many advantages, such as that easy to operate, wound restores fast and reduces pain in collecting sense；
2. the utility model be it is disposable, have the function of preventing from reusing；
3. at low cost and installation is more convenient；
4. rear end trigger arm is connected together with the formation of push handle block, reduce maloperation, reduces the wind of blood taking needle failureDanger.
Detailed description of the invention
Fig. 1 is the explosive view of the disposable blood sampling collection from heel device of the utility model；
Fig. 2 is the main view of the disposable one of shell of blood sampling collection from heel device of the utility model；
Fig. 3 is structural schematic diagram when the disposable blood sampling collection from heel device of the utility model is to be excited；
Fig. 4 is the structural schematic diagram after the completion of the disposable blood sampling collection from heel device excitation of the utility model；
In figure:
1, shell 2, torsional spring 3, blade 4, inserting column
5, plug-in opening 6, upper surface 7, lower end surface 8, the out edge of a knife
9, installing port 10, positioning support muscle 11, hook 12, straight torsion arm
13, limited block 14, card slot 15, triggering push handle 16, push handle block
17, hand touching push handle part 18, triggering arm section 19, the first support shaft 20, the second support shaft
21, active push rod 22, driven push rod 23, articulated linkage 24, rectangular preiection
101, aligning receptacle 191, cylinder 192, small column 211, the first cylindrical protrusions
212, first through hole 213, the second cylindrical protrusions 221, the second through-hole 222, the second cylindrical protrusions
223, groove 231, third through-hole 232, fourth hole
Specific embodiment
As shown in Figure 1, disposable blood sampling collection from heel device, including shell 1, torsional spring 2, trigger member, four-bar linkage structure and knifePiece 3.
As depicted in figs. 1 and 2, the shell 1 is fastened and connected by two half shells and is formed, on the edge of a half shellMultiple inserting columns 4 are provided with, multiple plug-in openings 5 are equipped on the edge of another half shell, two half shells pass through inserting column 4Detachable be fixedly connected is cooperatively formed with tight insert of plug-in opening 5；The upper surface 6 and lower end surface 7 of the shell 1 are plane；The lower end of the shell 1 is equipped with the edge of a knife 8, and the side of 1 upper end of shell is equipped with installing port 9；The top of described two half shellsThe corresponding part of medial surface is respectively equipped with positioning support muscle 10, on the installing port 9 and two half shells on the shell 1, shell 1Positioning support muscle 10 form aligning receptacle 101.
As shown in Fig. 2, being equipped with support shaft and spring structure, the torsional spring 2 in one of half shell of the shell 1Upper end be hook 11, the lower end of the torsional spring 2 is straight torsion arm 12, and the lower end of the torsional spring 2 is consolidated by spring structureIt is fixed；Preferably, the spring structure includes two limited blocks 13, and described two limited blocks 13 are located on the inner surface of shell 1, and twoCard slot 14 is formed between a limited block 13, the straight torsion arm 12 is located in card slot 14.
The trigger member includes triggering push handle 15 and push handle block 16, and the installation of shell 1 is arranged in the triggering push handle 15Mouthful 9 positions and being formed in a manner of inwardly moveable forward with shell 1 connect, and triggering push handle 15 includes the hand outside shell 1Touch push handle part 17 and triggering arm section 18；The triggering arm section 18 is moved along aligning receptacle 101, the triggering arm section packetInclude front end trigger arm and rear end trigger arm, as shown in figure 3, in the state of to be excited, the rear end trigger arm be located at shell 1 it is outer withThe formation of push handle block 16 is connected together；Rear end trigger arm is located at outside shell 1, the medial surface and rear end trigger arm of push handle block 16Upper end face contact formed insurance institution, prevent blood sampling collection from heel device maloperation；As shown in figure 4, in hemostix excitation process, it is describedRear end trigger arm enters inside shell 1 along aligning receptacle 101.
As shown in Figure 3, it is preferred that the triggering push handle 15 is located at the width of the touching of the hand outside shell 1 push handle part 17, push handleThe height of the width of block 16 and the equivalent width of 1 upper surface 6 of shell, hand touching push handle part 17 is greater than installing port 9Highly.
As shown in Figure 1, the support shaft includes the first support shaft 19 and the second support shaft 20；Second support shaft 20Height less than the first support shaft 19 height；2 sets of the torsional spring in the first support shaft 19；Preferably, first supportAxis 19 includes that the cylinder 191 of 1 inner surface of shell is arranged in and the small column 192 at 191 center of cylinder, 2 sets of the torsional spring is arranged inOn cylinder 191.
As shown in Figure 1, the four-bar linkage structure includes active push rod 21, driven push rod 22 and articulated linkage 23, it is described fromThe vertical section of dynamic push rod 22 is Z-shaped, and the active push rod 21 is spindle rotationally arranged in the first support shaft 19 and is located at torsional spring 2The lower surface of upper end, the rear portion of the active push rod 21 is equipped with the first cylindrical protrusions 211, and the hook 11 of torsional spring 2 hooks instituteState the first cylindrical protrusions 211；The front hinge of the upper surface at the rear portion of the active push rod 21 and driven push rod 22, it is describedThe upper surface hinge at the rear portion of the lower surface and articulated linkage 23 at the rear portion of driven push rod 22, the front of the articulated linkage 23 canIn the second support shaft 20, the blade 3 is embedded in the upper surface of driven push rod 22 for the setting of rotation.
Preferably, the middle part of the active push rod 21 is equipped with first through hole 212 corresponding with small column 192, and described theThe rotatable set of one through-hole 212 is on small column 192；The upper surface at the rear portion of the active push rod 21 is equipped with the second cylinderProtrusion 213；The front of the driven push rod 22 is equipped with second through-hole 221 corresponding with the second cylindrical protrusions 213, describedThe left side of the lower surface at the rear portion of driven push rod 22 is equipped with third cylindrical protrusions 222；The front of the articulated linkage 2323 is setThere is third through-hole 231 corresponding with the second support shaft 20, the middle part of the articulated linkage 23 is equipped with and third cylindrical protrusions222 corresponding fourth holes 232；The upper surface at 22 rear portion of driven push rod is equipped with the groove matched with 3 shape of blade223, the blade 3 is embedded in the groove 223 of driven push rod 22.
Rectangular preiection 24, the side of the rectangular preiection 24 are respectively equipped on the medial surface on the top of described two half shellsFace is connected with the medial surface on half shell top, as shown in figure 3, front end trigger arm can not be from shell 1 because of the blocking of rectangular preiection 24Interior extraction, it is therefore prevented that blood sampling collection from heel device reuses.
The course of work of the utility model: as shown in figure 3, in the state that blood sampling collection from heel device is in be excited, rear end touchingHair arm is located at outer formed with push handle block 16 of shell 1 and is connected together；The front end of front end trigger arm and 21 front end of active push rodSide compresses contact in the formation of rear end working position, and the first cylindrical protrusions 211 of 21 lower end of active push rod hook the hook of torsional spring 211 make torsional spring 2 be in twisting to extended state, and the point of a knife on blade 3 is located in shell 1.
When needing to excite, 3 exit of blade of blood sampling collection from heel device lower end surface is resisted to the heel of baby, extracts push handle block16, it is pushed away to stop with finger and touches push handle part 17, rear end trigger arm enters inside shell 1 along aligning receptacle 101, front end trigger armIt is disengaged with active push rod 21, four-bar linkage structure band cutting blade 3 forms arc designated port in baby's heel.
As shown in figure 4, the first cylindrical protrusions 211 and the hook 11 of torsional spring 2 are detached from after blood sampling collection from heel device is in excitation,Torsional spring 2 is set to be in normal condition, blade 3 after driven 22 rotary camber designated port of push rod with being retracted in shell 1.
One embodiment of the utility model is described in detail above, but the content is only the utility modelPreferred embodiment should not be considered as limiting the scope of the present invention.It is all to be made according to application scope of the utility modelAll the changes and improvements etc., should still belong within the patent covering scope of the utility model.