CN104470437A - Needle seat assembly for syringe-type vacuum blood collector - Google Patents

Needle seat assembly for syringe-type vacuum blood collector Download PDF

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Publication number
CN104470437A
CN104470437A CN201280074566.8A CN201280074566A CN104470437A CN 104470437 A CN104470437 A CN 104470437A CN 201280074566 A CN201280074566 A CN 201280074566A CN 104470437 A CN104470437 A CN 104470437A
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China
Prior art keywords
syringe
blood
needle
tube
type vacuum
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Granted
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CN201280074566.8A
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Chinese (zh)
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CN104470437B (en
Inventor
张建铭
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Bestway Changting Medical Devices Co ltd
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Individual
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Publication of CN104470437B publication Critical patent/CN104470437B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/14—Devices for taking samples of blood ; Measuring characteristics of blood in vivo, e.g. gas concentration within the blood, pH-value of blood
    • A61B5/1405—Devices for taking blood samples
    • A61B5/1438—Devices for taking blood samples using pre-evacuated means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150015—Source of blood
    • A61B5/15003—Source of blood for venous or arterial blood
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150473—Double-ended needles, e.g. used with pre-evacuated sampling tubes
    • A61B5/150496—Details of construction of hub, i.e. element used to attach the double-ended needle to a piercing device or sampling device
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150503—Single-ended needles
    • A61B5/150519—Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
    • A61B5/150641—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves comprising means to impede repositioning of protection sleeve from covering to uncovering position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150732—Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
    • A61B5/154—Devices using pre-evacuated means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/155—Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

A needle seat assembly for a syringe-type vacuum blood collector comprises a vascular puncturing needle (11), a puncturing needle seat (13), a blood collection needle tube (12), a blood collection needle seat (14), and a soft connection tube (15). The puncturing needle seat (13) is positioned at a front end of a chamber in a syringe (3) of the vacuum blood collector, the blood collection needle seat (14) is fixedly connected with the syringe (3), and a rear end of the blood collection needle tube (12) and most part of the needle tube extend backwards and are interposed in a tube plug of a blood sample collection tube (2) of the syringe (3). One end of the soft connection tube (15) is fixedly connected with the puncturing needle seat (13), the other end is fixedly connected with the blood collection needle seat (14), and the core of the soft connection tube (15), as a sealed chamber, is in communication with a cavity of the puncturing needle seat (13) and a cavity (142) of the blood collection needle seat (14). When the operation of inserting the blood sample collection tube (2) into the syringe (3) is performed, an operating force transferred from the blood sample collection tube (2) is transferred to the syringe (3) through the blood collection needle seat (14) because the blood collection needle seat (14) is fixedly connected with the syringe (3). The flexibility of the soft connection tube (15) ensures that the operating force is not transferred to the puncturing needle seat (13) or the vascular puncturing needle (11). As a result, the operating force transferred from the blood sample collection tube (2) does not pose any impact on the vascular puncturing needle (11).

Description

The hub assemblies of syringe-type vacuum blood collector Technical field
The present invention relates to vacuum blood collection apparatus, particularly a kind of hub assemblies of syringe-type vacuum blood collector outside a kind of human body in clinical treatment.
Background technology
A kind of syringe-type vacuum blood collector of the prior art is as shown in Fig. 1, Fig. 2, including vascular puncture needle tubing 11, blood-collecting needle tube 12 , blood sample collection pipe 2 and a kind of syringe 3, the inside of syringe 3 has an annular seal space 16 and a cylindrical cavity 31, and wherein annular seal space 16 is located at before cylindrical cavity 31.Puncture needle tubing 11 It is fixed on the annular seal space antetheca, its tube core is connected with the annular seal space 16.The front end of blood-collecting needle tube 12 is installed with the annular seal space rear wall, and its rear end and needle tubing largely extend back and be plugged on blood sample collection pipe 2 Pipe close in, the tube core of blood-collecting needle tube 12 is connected with the annular seal space 16.The rear and its rear end that cylindrical cavity 31 is located at annular seal space are opened, blood sample collection pipe 2 Pipe close is nested with the cylindrical cavity 31 preceding in removable mode.Blood sample collection pipe pipe close aft bulkhead has a sealant 21 that can be pierced through by the rear end of blood-collecting needle tube 12, blood sample collection pipe 2 The cylindrical cavity 31 of front end face has the space that the preceding blood sample collection tube capacity pushed away is put for this sealant of puncture.Vascular puncture needle tubing tube core, annular seal space 16, blood-collecting needle tube tube core and pierced sealant 21 Blood sample collection pipe tube chamber afterwards constitutes a kind of blood channel.
Capsule walls not only as Paracentesis needle holder 13 but also are used as blood sampling needle stand 14 herein, puncture needle tubing 11 and blood-collecting needle tube 12 It is connected respectively with its front and rear wall again, therefore, the Paracentesis needle holder 13, blood sampling needle stand 14, annular seal space 16, puncture needle tubing 11 and blood-collecting needle tube 12 constitute a kind of hub assemblies.
Due to capsule walls not only as Paracentesis needle holder 13 but also be used as blood sampling needle stand 14 , while be in again all around a kind of ghost shape, and such construction is completed in this narrow space of syringe inner chamber again, certainly will bring the problem of packaging technology is bad.
The prior art second is disadvantageous in that：Not with syringe is affixed and the vacant hub assemblies in syringe cavity, easily swung in operation, not only influence the stability of operation but also the puncture needle tubing of swing will likely result in puncture failure.Importantly, when blood sample collection pipe is to enter syringe inner chamber with screw joining manner rotation set, the spin resistance produced by piercing through sealant due to blood-collecting needle tube rear end will misplace whole needle tubing component, or even directly damage whole needle tubing component.
The content of the invention
It is an object of the invention to overcome weak point of the prior art, and provide that a kind of structure simplifies and packaging technology is preferable The hub assemblies of syringe-type vacuum blood collector, it is a further object of the present invention to provide it is a kind of be connected with syringe it is stronger, while again can relative syringe do relative motion freely syringe-type vacuum blood collector hub assemblies.
The purpose of the present invention is realized by following approach.
The hub assemblies of syringe-type vacuum blood collector, the syringe-type vacuum blood collector Including vascular puncture needle tubing, Paracentesis needle holder, blood-collecting needle tube, blood sampling needle stand, blood sample collection pipe and a kind of syringe, there is an annular seal space and a cylindrical cavity inside syringe, the rear end of blood-collecting needle tube and needle tubing largely extend back and are plugged in the pipe close of blood sample collection pipe, the rear and its rear end that cylindrical cavity is located at annular seal space are opened, blood sample collection pipe pipe close is nested with the cylindrical cavity preceding in removable mode, and blood sample collection pipe pipe close aft bulkhead has a sealant that can be pierced through by blood-collecting needle tube rear end , The cylindrical cavity of blood sample collection pipe front end face has the space that the preceding blood sample collection tube capacity pushed away is put for this sealant of puncture, puncture the blood sample collection pipe tube chamber after needle tubing tube core, annular seal space, blood-collecting needle tube tube core and pierced sealant and constitute a kind of blood channel, needle tubing, the Paracentesis needle holder for planting connecting puncture needle pipe, annular seal space, blood-collecting needle tube and a kind of hub assemblies of blood sampling needle stand composition for planting connection blood-collecting needle tube are punctured, its composition is characterized by：Hub assemblies also include a kind of hose connector, Paracentesis needle holder is located at the front end of syringe inner chamber, hose connector one end and the Paracentesis needle holder are affixed, the other end and blood sampling needle stand are affixed, blood sampling needle stand and syringe are affixed, and hose connector tube core is connected with Paracentesis needle holder cavity and blood sampling needle stand cavity respectively as annular seal space.
So, the capsule walls of ghost shape are replaced with hose connector, without the assembly operation for all around being built capsule walls, structure simplifies, and assembly operation is also simplified and easily implemented.
And make blood sampling needle stand and syringe affixed, when implementation blood sample collection pipe sleeve inserts the operation of cylindrical cavity, the operating physical force passed over from blood sample collection pipe passes to syringe by needle stand of taking a blood sample, and the flexibility of hose connector ensure that the operating physical force is not transferred to Paracentesis needle holder and punctures needle tubing, so as to ensure that the operating physical force transmitted from blood sample collection pipe does not interfere with puncture needle tubing.
The purpose of the present invention can also be realized by following approach.
Paracentesis needle holder and syringe are connected with various ways, and following two connected modes decides whether puncture needle tubing can be retracted in syringe inner chamber：
One kind is：
Paracentesis needle holder is fixed in syringe inner chamber.
Now, when puncturing needle tubing from human body recession, fixed due to puncturing needle tubing with respect to syringe, puncture needle tubing and dropped back together with syringe.
It is another to be：
Paracentesis needle holder in the way of syringe movement can be arranged in syringe inner chamber, there is the accommodating needle tubing that punctures to be set back in space therein in syringe inner chamber, hub assemblies also include a kind of needle stand pushing hands, a kind of sliding groove is extended axially by the syringe side wall corresponding with the Paracentesis needle holder, needle stand pushing hands on syringe lateral wall is affixed by its horizontal handle and Paracentesis needle holder, and hose connector has the extension length that the stroke being set back in puncturing needle tubing in syringe matches.
So, when implementing to puncture needle tubing from human body recession, only needle stand pushing hands need to be promoted backward, driven by horizontal handle, Paracentesis needle holder and puncture needle tubing, the puncture needle tubing of recession is allowed to retract in syringe inner chamber, now, hose connector will be stretched slowly, and its extension length matched, which ensure that, punctures the stroke that needle tubing is retracted in syringe inner chamber.
This technical scheme generates a unexpected effect：Puncture needle tubing from human body drop back when, it is not necessary to linked with blood sample collection pipe, but relative blood sample collection pipe is individually dropped back so that the recession for puncturing needle tubing operate it is lighter, from the burden of blood sample collection pipe.
The connecting portion of hose connector and Paracentesis needle holder, needle stand of taking a blood sample has multiple choices, is preferably several as follows：
Dashed forward upwards on the upper side wall of Paracentesis needle holder it is convex have a kind of hose connector connecting seat, dashed forward upwards on the upper side wall of needle stand of taking a blood sample it is convex have a kind of hose connector connecting seat, hose connector two ends are connected with corresponding connecting seat sleeve from top to bottom；
Dashed forward to the left on the left side wall relative with horizontal handle on Paracentesis needle holder it is convex have a kind of hose connector connecting seat, dashed forward to the left on the left side wall of needle stand of taking a blood sample it is convex have a kind of hose connector connecting seat, hose connector two ends are connected with corresponding connecting seat sleeve.
On take a blood sample needle stand specific configuration the following is optimization one kind：
Blood taking needle seat is located at the centre of syringe inner chamber, and its front end and syringe front end be affixed or Construction integration, and its rear end is extended in parallel backward along syringe axial line.
Needle stand of taking a blood sample is in a kind of column, and its position being connected with hose connector is located on the side wall of the column, and hose connector is wound in the syringe inner chamber of column blood sampling needle stand periphery.
The front end of column blood sampling needle stand has positioning key, and this positioning key sleeve is in the positioning spline of syringe inner chamber front bulkhead.
This construction can position the position of hose connector connecting seat on blood sampling needle stand.
The rear portion outer wall manufacture of column blood sampling needle stand has external screw thread, the internal thread matching connection of this external screw thread and blood sample collection pipe pipe close.
A kind of smooth flexible pipe of hose connector or a kind of snake-like hose.
Needle stand pushing hands madial wall is in a kind of arc corresponding with syringe periphery wall, and needle stand pushing hands lateral wall is in annular knurl on a kind of arcs of recesses corresponding with finger face, this concave arc surface.
So, needle stand pushing hands can compacter patch be trapped among outside syringe, while the cancave cambered surface of annular knurl can obtain preferable sense of touch.
Horizontal handle one end and Paracentesis needle holder be affixed or Construction integration, and the other end is in a kind of positioning key-like, and termination is provided with barb-shaped buckle, and the termination passes across after sliding groove and snapped connection with the positioning spline and neck on needle stand pushing hands madial wall.
The section of not rounded can serve as positioning key.
In summary, the present invention has the following advantages that compared with prior art：Make blood sampling needle stand and syringe affixed, when implementation blood sample collection pipe sleeve inserts the operation of cylindrical cavity, the operating physical force passed over from blood sample collection pipe passes to syringe by needle stand of taking a blood sample, and the flexibility of hose connector ensure that the operating physical force is not transferred to Paracentesis needle holder and punctures needle tubing, so as to ensure that the operating physical force passed from blood sample collection pipe does not interfere with puncture needle tubing.
Brief description of the drawings
Fig. 1 is a kind of structural representation front view of syringe-type vacuum blood collection tube device in the prior art.
Fig. 2 is that a kind of syringe-type vacuum blood collection tube device blood sample collection pipe withdraws from view in the prior art.
Fig. 3 is the structural representation front view of syringe-type vacuum blood collector in the embodiment of the present invention one.
Fig. 4 is the outward appearance schematic isometric of syringe-type vacuum blood collector in the embodiment of the present invention one.
Fig. 5 is the structural representation stereogram of the hub assemblies of syringe-type vacuum blood collector in the embodiment of the present invention one.
Fig. 6 is blood sampling needle stand structure schematic isometric in the embodiment of the present invention one.
Fig. 7 is blood sampling needle stand structure schematic sectional view in the embodiment of the present invention one.
Fig. 8 is syringe cylinder structure schematic sectional front view in the embodiment of the present invention one.
Fig. 9 is syringe cylinder structure schematic sectional left view in the embodiment of the present invention one.
Figure 10 is syringe cylinder structure schematic isometric in the embodiment of the present invention one.
Figure 11 is Paracentesis needle holder, horizontal handle, needle stand pushing hands connection signal stereogram in the embodiment of the present invention one.
Figure 12 is the structural representation sectional plan view of syringe-type vacuum blood collector in the embodiment of the present invention two.
More description in detail is carried out to the utility model below in conjunction with the accompanying drawings.
Label declaration：
11 puncture the cavity 15 of 12 blood-collecting needle tube of needle tubing, 13 141 positioning key of the blood sampling needle stand of Paracentesis needle holder 14 142 The positioning spline of 16 annular seal space of hose connector, 17 needle stand pushing hands, 18 32 sliding groove of horizontal 181 buckle of handle 2 blood sample collection pipe, 21 sealant, 3 syringe, 31 cylindrical cavity 33 35 chutes
Embodiment
Embodiment one：
Reference picture 3, Fig. 4, syringe-type vacuum blood collector, including hub assemblies, blood sample collection pipe 2 and syringe 3.Syringe 3 It is a hollow barrel-type housing, is made up of medical transparent material, syringe 3 Leading section intersects in the downwardly extending wedge shape that contracted in one kind, the upper contracting end of the tapered ramp and the outer peripheral face of syringe, and the lower extending end of the tapered ramp is close to syringe outer peripheral face（I.e. close to case inside edge）Position form a kind of small boss, boss center, which is set, punctures needle tubing 11 installation through-holes, puncture the tail end of needle tubing 11 so that with being plugged in the way of the center parallel of syringe 3 on the Paracentesis needle holder 13, the needle point of the needle tubing and the major part of needle tubing are exposed outside syringe 3.Syringe 3 Inside has an annular seal space and a cylindrical cavity 31, and wherein annular seal space is located at syringe front end, and the tube core for puncturing needle tubing 11 is connected with the annular seal space.Blood-collecting needle tube 12 and cylindrical cavity 31 are coaxial.Blood-collecting needle tube 12 Blood sampling sealing shroud is coated with, blood sample collection pipe pipe close is provided centrally with axially extending to the core bore of sealant 21, this core bore internal diameter is more slightly larger than blood sampling sealing shroud external diameter.So, blood-collecting needle tube 12 is with blood sampling sealing shroud 15 When penetrating pipe close along this core bore, blood sampling sealing shroud 15 is compressed radial distorted dilatating and deformable by axial compression, just with this core bore inner hole wall extrusion friction, will not more allow blood-collecting needle tube 12 to deviate from blood sample collection pipe pipe close.Cylindrical cavity 31 rears and its rear end for being located at annular seal space are opened, and the pipe close of blood sample collection pipe 2 is in preceding sleeve in the cylindrical cavity 31, and the length of cylindrical cavity 31 is less than blood sample collection pipe 2 Length, the afterbody for the blood sample collection pipe 2 being nested with cylindrical cavity 31 is exposed outside cylindrical cavity.The pipe close aft bulkhead of blood sample collection pipe 2 has a sealant 21 that can be pierced through by the rear end of blood-collecting needle tube 12, The thickness of sealant 21 is 1.5MM, and the cylindrical cavity 31 of the front end face of blood sample collection pipe 2 has the accommodating space of the blood sample collection pipe 2 pushed away to pierce through this sealant 21 before spiral.
Reference picture 3, Fig. 5, the hub assemblies of syringe-type vacuum blood collector, including puncture needle tubing 11, plant connecting puncture needle pipe 11 Paracentesis needle holder 13, annular seal space, blood-collecting needle tube 12, plant connection blood-collecting needle tube 12 blood sampling needle stand 14, hose connector 15, needle stand pushing hands 17 and horizontal handle 18.Paracentesis needle holder 13 Being arranged in the way of it can be moved relative to syringe 3 in the inner chamber leading section of syringe 3, the inner chamber of syringe 3, there is the accommodating needle tubing that punctures to be set back in space therein.Syringe 3 and the Paracentesis needle holder 13 A kind of sliding groove 32 is extended axially by corresponding side wall, the needle stand pushing hands 17 on the lateral wall of syringe 3 is affixed by its horizontal handle 18 and Paracentesis needle holder 13, hose connector 15 has with puncturing needle tubing The extension length that 11 strokes being set back in syringe match.Dashed forward upwards on the upper side wall of Paracentesis needle holder 13 it is convex have a kind of hose connector connecting seat, needle stand 14 of taking a blood sample Upper side wall on dash forward upwards it is convex have a kind of hose connector connecting seat, the two ends of hose connector 15 are connected with corresponding connecting seat sleeve from top to bottom.Needle stand 14 of taking a blood sample is located at the centre of the inner chamber of syringe 3, its front end and syringe 3 Front end Construction integration, its rear end is extended in parallel backward along the axial line of syringe 3.Hose connector is a kind of smooth flexible pipe.
Reference picture 5, Fig. 6, Fig. 7 blood sampling needle stand 14 are in a kind of column, and the front end of column blood sampling needle stand has positioning key 141 , this sleeve of positioning key 141 is in the positioning spline 33 of syringe inner chamber front bulkhead.Column blood sampling needle stand 14 The manufacture of rear portion outer wall have external screw thread, this external screw thread be a kind of double thread and with the internal thread matching connection of blood sample collection pipe pipe close.The blood sampling heart of needle stand 14 has issued cavity 142.Equally, Paracentesis needle holder 13 Heart has also issued cavity, and the tube core of hose connector 15 is connected with Paracentesis needle holder cavity and blood sampling needle stand cavity 142 respectively as annular seal space.So, needle tubing tube core, Paracentesis needle holder cavity, hose connector tube core, blood sampling needle stand cavity are punctured 142nd, the blood sample collection pipe tube core after blood-collecting needle tube tube core and pierced sealant 21 constitutes a kind of blood channel.
Reference picture 5, Figure 11, the madial wall of needle stand pushing hands 17 are in a kind of arc corresponding with syringe periphery wall, needle stand pushing hands 17 Lateral wall is in annular knurl on a kind of arcs of recesses corresponding with finger face, this concave arc surface.Horizontal one end of handle 18 and the Construction integration of Paracentesis needle holder 13, the other end is square in one kind, and termination is provided with barb-shaped buckle 181 , the termination passes across after sliding groove 32 and snapped connection with the square groove and neck 171 on the madial wall of needle stand pushing hands 17.
It is axially extending on reference picture 8, Fig. 9, Figure 10, syringe 3 to have sliding groove 32.Syringe 3 The manufacture of inner chamber leading section has the blood sampling fixing hole 34 of needle stand 14 and positioning spline 33.Syringe intracavity bottom issues the chute 35 that a kind of section is arc, Paracentesis needle holder 13 vertically The arc of bottom is matched with the arc, is slided backward so as to be able to allow Paracentesis needle holder 13 to be sitting on this chute 35.
In use, when implementing to puncture needle tubing 11 from human body recession, only need to promote needle stand pushing hands 17 backward, pass through horizontal handle 18, Paracentesis needle holder 13 Drive and puncture needle tubing 11, allow the puncture needle tubing 11 of recession to retract in the inner chamber of syringe 3, now, hose connector 15 will be stretched slowly, its extension length matched ensure that puncture needle tubing 11 The stroke retracted in syringe inner chamber.
The not described part of the present embodiment is same as the prior art.
Most preferred embodiment：
Reference picture 5, Figure 10, the hub assemblies of syringe-type vacuum blood collector by puncture needle tubing 11, plant connecting puncture needle pipe 11 Paracentesis needle holder 13, annular seal space, blood-collecting needle tube 12, plant connection blood-collecting needle tube 12 blood sampling needle stand 14 and hose connector 15 constitute.Paracentesis needle holder 13 is fixed on syringe 3 In inner chamber.
In use, when implementing to puncture needle tubing 11 from human body recession, promoting syringe that puncture needle tubing 11 can be allowed to withdraw from human body backward.
The present embodiment is without the needle stand pushing hands 17 in embodiment one, horizontal handle 18, sliding groove 32, chute 35 grades construct and construct the construction matched with the grade.In addition, the not described part of the present embodiment is identical with embodiment one.

Claims (12)

  1. The hub assemblies of syringe-type vacuum blood collector, the syringe-type vacuum blood collector includes vascular puncture needle tubing, Paracentesis needle holder, blood-collecting needle tube, blood sampling needle stand, blood sample collection pipe and a kind of syringe, there is an annular seal space and a cylindrical cavity inside syringe, the rear end of blood-collecting needle tube and needle tubing largely extend back and are plugged in the pipe close of blood sample collection pipe, the rear and its rear end that cylindrical cavity is located at annular seal space are opened, blood sample collection pipe pipe close is nested with the cylindrical cavity preceding in removable mode, blood sample collection pipe pipe close aft bulkhead has a sealant that can be pierced through by blood-collecting needle tube rear end, The cylindrical cavity of blood sample collection pipe front end face has the space that the preceding blood sample collection tube capacity pushed away is put for this sealant of puncture, puncture needle tubing tube core, annular seal space, blood sample collection pipe tube chamber after blood-collecting needle tube tube core and pierced sealant constitutes a kind of blood channel, puncture needle tubing, plant the Paracentesis needle holder of connecting puncture needle pipe, annular seal space, blood-collecting needle tube and a kind of hub assemblies of blood sampling needle stand composition for planting connection blood-collecting needle tube, it is characterized in that, hub assemblies also include a kind of hose connector, Paracentesis needle holder is located at the front end of syringe inner chamber, hose connector one end and the Paracentesis needle holder are affixed, the other end and blood sampling needle stand are affixed, blood sampling needle stand and syringe are affixed, hose connector tube core is connected with Paracentesis needle holder cavity and blood sampling needle stand cavity respectively as annular seal space.
  2. The hub assemblies of syringe-type vacuum blood collector according to claim 1, it is characterised in that Paracentesis needle holder is fixed in syringe inner chamber.
  3. The hub assemblies of syringe-type vacuum blood collector according to claim 1, it is characterised in that Paracentesis needle holder in the way of syringe movement can be arranged in syringe inner chamber, there is the accommodating needle tubing that punctures to be set back in space therein in syringe inner chamber, hub assemblies also include a kind of needle stand pushing hands, a kind of sliding groove is extended axially by the syringe side wall corresponding with the Paracentesis needle holder, needle stand pushing hands on syringe lateral wall is affixed by its horizontal handle and Paracentesis needle holder, and hose connector has the extension length that the stroke being set back in puncturing needle tubing in syringe matches.
  4. According to claim 1 The hub assemblies of described syringe-type vacuum blood collector, it is characterized in that, being dashed forward upwards on the upper side wall of Paracentesis needle holder convex has a kind of hose connector connecting seat, take a blood sample dash forward upwards on the upper side wall of needle stand it is convex have a kind of hose connector connecting seat, hose connector two ends are connected with corresponding connecting seat sleeve from top to bottom.
  5. According to claim 1 The hub assemblies of described syringe-type vacuum blood collector, it is characterized in that, being dashed forward to the left on the left side wall relative with horizontal handle on Paracentesis needle holder convex has a kind of hose connector connecting seat, take a blood sample dash forward to the left on the left side wall of needle stand it is convex have a kind of hose connector connecting seat, hose connector two ends are connected with corresponding connecting seat sleeve.
  6. According to claim 1 or 4 or 5 The hub assemblies of described syringe-type vacuum blood collector, it is characterised in that blood taking needle seat is located at the centre of syringe inner chamber, its front end and syringe front end be affixed or Construction integration, and its rear end is extended in parallel backward along syringe axial line.
  7. The hub assemblies of syringe-type vacuum blood collector according to claim 1 or 4 or 5, it is characterised in that Needle stand of taking a blood sample is in a kind of column, and its position being connected with hose connector is located on the side wall of the column, and hose connector is wound in the syringe inner chamber of column blood sampling needle stand periphery.
  8. According to claim 7 The hub assemblies of described syringe-type vacuum blood collector, it is characterised in that the front end of column blood sampling needle stand has positioning key, and this positioning key sleeve is in the positioning spline of syringe inner chamber front bulkhead.
  9. The hub assemblies of syringe-type vacuum blood collector according to claim 7, it is characterised in that The rear portion outer wall manufacture of column blood sampling needle stand has external screw thread, the internal thread matching connection of this external screw thread and blood sample collection pipe pipe close.
  10. The hub assemblies of syringe-type vacuum blood collector according to claim 7, it is characterised in that A kind of smooth flexible pipe of hose connector or a kind of snake-like hose.
  11. According to claim 3 The hub assemblies of described syringe-type vacuum blood collector, it is characterised in that needle stand pushing hands madial wall is in a kind of arc corresponding with syringe periphery wall, needle stand pushing hands lateral wall is in annular knurl on a kind of arcs of recesses corresponding with finger face, this concave arc surface.
  12. According to claim 3 The hub assemblies of described syringe-type vacuum blood collector, it is characterized in that, horizontal handle one end and Paracentesis needle holder be affixed or Construction integration, the other end is in a kind of positioning key-like, and termination is provided with barb-shaped buckle, the termination passes across after sliding groove and snapped connection with the positioning spline and neck on needle stand pushing hands madial wall.
CN201280074566.8A 2012-09-03 2012-09-03 The hub assemblies of syringe-type vacuum blood collector Active CN104470437B (en)

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PCT/CN2012/080901 WO2014032299A1 (en) 2012-09-03 2012-09-03 Needle seat assembly for syringe-type vacuum blood collector

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CN104470437B CN104470437B (en) 2016-09-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0968682A1 (en) * 1998-07-03 2000-01-05 Altair Blood sampling device for a vacuum evacuated tube
WO2005092174A1 (en) * 2004-03-23 2005-10-06 Safe-T Limited A needle assembly for a body fluids sampling device
CN202776323U (en) * 2012-08-02 2013-03-13 张建铭 Integral type vacuum blood collecting device with indwelling catheter
CN202776326U (en) * 2012-09-03 2013-03-13 张建铭 Needle bed assembly of syringes type vacuum blood collection device
CN202776322U (en) * 2012-08-02 2013-03-13 张建铭 Vacuum blood collector with indwelling catheter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625810B1 (en) * 1988-01-08 1990-12-21 Allflex Europ Sa DEVICE FOR TAKING LIQUIDS FOR SINGLE USE
AT400802B (en) * 1993-12-16 1996-03-25 Greiner & Soehne C A HOLDING DEVICE FOR A BLOOD SAMPLING TUBE OF A BLOOD SAMPLING DEVICE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0968682A1 (en) * 1998-07-03 2000-01-05 Altair Blood sampling device for a vacuum evacuated tube
WO2005092174A1 (en) * 2004-03-23 2005-10-06 Safe-T Limited A needle assembly for a body fluids sampling device
CN202776323U (en) * 2012-08-02 2013-03-13 张建铭 Integral type vacuum blood collecting device with indwelling catheter
CN202776322U (en) * 2012-08-02 2013-03-13 张建铭 Vacuum blood collector with indwelling catheter
CN202776326U (en) * 2012-09-03 2013-03-13 张建铭 Needle bed assembly of syringes type vacuum blood collection device

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CN104470437B (en) 2016-09-14

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Denomination of invention: Needle base assembly of syringe vacuum blood sampler

Effective date of registration: 20230227

Granted publication date: 20160914

Pledgee: Changting Rural Credit Cooperative Association

Pledgor: Zhang Jianming

Registration number: Y2023990000132

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Effective date of registration: 20230918

Address after: Building S3 #, Medical Equipment Industrial Park, Industrial New Area, No. 66 Tingzhou Avenue South Road, Cewu Town, Changting County, Longyan City, Fujian Province, 366309

Patentee after: Bestway (Changting) Medical Devices Co.,Ltd.

Address before: No. 27, Lane 45, Kaohsiung Road, Huangpu District, Shanghai, 200011

Patentee before: Zhang Jianming