CN106267521A - Safety device, conduit and introducing needle assembly and remaining needle - Google Patents
Safety device, conduit and introducing needle assembly and remaining needle Download PDFInfo
- Publication number
- CN106267521A CN106267521A CN201610770722.4A CN201610770722A CN106267521A CN 106267521 A CN106267521 A CN 106267521A CN 201610770722 A CN201610770722 A CN 201610770722A CN 106267521 A CN106267521 A CN 106267521A
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- China
- Prior art keywords
- needle
- pin
- introducing
- gobo
- introducing pin
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
-
- 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
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
-
- 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
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0082—Catheter tip comprising a tool
- A61M25/0084—Catheter tip comprising a tool being one or more injection needles
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- 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
-
- 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
- A61M25/065—Guide needles
-
- 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
- A61M25/0662—Guide tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/12—Blood circulatory system
Abstract
Present invention is disclosed a kind of safety device, there is the conduit of this safety device and introduce needle assembly and remaining needle.Described safety device introduces pin for clearance fit, including: needle housing, surround the passage by proximate longitudinal extension and the containing cavity intersected with channel part, passage is configured such that introducing pin passes through；The alligator clamp being arranged in containing cavity, including being relatively arranged on the first arm and second arm of passage both sides and being respectively arranged at the first gobo on the first arm and the second arm and the second gobo；Locating part, for after introducing pin and extracting out, the distal needle limiting introducing pin proximally removes outside needle housing；Wherein, before introducing pin extraction, introduce pin and compress the first gobo and the second gobo so that alligator clamp is positioned at compact model；After introducing pin and extracting out, at least the first gobo is released and moves to the far-end of needle point and introduces pin outside far-end removal needle housing to limit.The present invention can reduce needle point leak outside cause stab risk and infection risk.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to a kind of safety device, there is the conduit of this safety device and draw
Enter needle assembly and remaining needle.
Background technology
Catheter in blood vessel, particularly venous duct, be normally used for patient's infusion fluid, the most common saline solution, each
Plant medicine and injection nutriment etc., or be used for extracting blood from the patient.Systemic vein conduit is the most comparatively short, size
General at two inches or shorter.The conduit of most common type is to be enclosed within a systemic vein conduit introduced on pin.
This systemic vein conduit introduced on pin that is enclosed within is to be assemblied on an introducing pin with sharpened tip.Conduit
Being assembled into introducing pin, the needle point introducing pin extends beyond the tip of conduit, and introduces the inclined plane of pin needle tip upward.
Conduit and introducing needle assembly are pierced through the skin of patient by the angle shallow with and enter in peripheral vessel, described
Peripheral vessel be not joined directly together with heart, but one of central vessel branch being joined directly together with heart is connected.
After conduit and introducing needle assembly are inserted in blood vessel, important is to need to confirm that whether this assembly is at blood
Pipe is in correct location.In order to confirm whether described assembly is properly positioned, medical worker needs to be confirmed whether introducing pin
Be positioned at introduce pin proximal end back cavity in the presence of backflow blood.In prior art, introducing pin can be on its distal portions
It is provided with a groove or opening, as such, it is possible to observe blood backflow in the annular space introduced between pin and conduit.The most just
True be positioned to confirm after, medical worker extracts introducing pin out and conduit is stayed original place, then by liquid transporting apparatus such as
Unfractionated heparin cap or skull is connected to conduit.Once introducing pin to extract out from conduit, it will be with " the pin of contamination blood
Point ", it is necessary to correctly dispose.
In recent years, the blood that may be infected with patient for medical worker has had the biggest concern, has recognized
Have to dispose immediately to " needle point of contamination blood ".This concern is increasing, can't treat at present because occurring in that
Fatal disease, such as acquired immune deficiency syndrome (AIDS), these diseases may be delivered to another one by the exchange of body fluid from an infected person
People.Therefore, the bioresorbable with AIDSinfected patient have to be avoided.As described above, if introducing pin
It is used for being placed in the blood vessel of AIDSinfected patient a conduit, then this introduces pin is exactly the matchmaker transmitting disease
It is situated between.Although the already known needs of medical worker correctly process " needle point of contamination blood ", but unfortunately at some medical treatment ring
Under border, the most in emergency circumstances or owing to not noticing or neglecting, still there is the introducing pin being infected with and stab medical worker
Situation.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of safety device, there is this safety device
Conduit and introducing needle assembly and remaining needle, can be closed needle point by safety device, the meaning caused to solve needle point to expose
Stab outward or the problem of courses of infection.
One of for achieving the above object, an embodiment of the present invention provides a kind of safety device, joins for activity
Closing and introduce pin, described safety device includes:
Needle housing, surrounds the passage by proximate longitudinal extension and the containing cavity intersected with described channel part, described
Passage is configured such that described introducing pin passes through；
Alligator clamp, is arranged in described containing cavity, including be relatively arranged on the first arm of described passage both sides and the second arm,
And it is respectively arranged at the first gobo on described first arm and described second arm and the second gobo；
Locating part, after extracting out at described introducing pin, the distal needle limiting described introducing pin proximally removes institute
State outside needle housing；
Wherein, described introducing pin extract out before, described introducing pin compress described first gobo and described second gobo with
Described alligator clamp is made to be positioned at compact model；After described introducing pin is extracted out, the most described first gobo is released and moves to
The far-end of described needle point is to limit described introducing pin outside far-end removes described needle housing.
As the further improvement of an embodiment of the present invention, after described introducing pin is extracted out, described second gobo is executed
Being added on a resist force on described introducing pin, described resist force has the component of the most described first arm.
As the further improvement of an embodiment of the present invention, described alligator clamp also includes location division, and described location division is used
It is connected in engaging with the medial wall of described needle housing, to limit the length travel of the most described needle housing of described alligator clamp.
As the further improvement of an embodiment of the present invention, it is connected to the near-end of conduit tube component, described conduit tube component bag
Including conduit and be connected to the catheter block of described catheter proximal end, the near-end of described catheter block is provided with connecting portion, described needle housing remote
End is provided with holding section, and described holding section can be engaged to described connecting portion so that far-end and described catheter block near of described needle housing
End is the most mutually socketed.
As the further improvement of an embodiment of the present invention, the near-end of described catheter block is socketed on the far-end of described needle housing
Outside, the far-end of described needle housing is set to some elastic components separated from one another；Before described introducing pin is extracted out, described introducing
Pin supports some described elastic components；After described introducing pin is extracted out, described elastic component can move so that described radially inward
Described connecting portion is deviate from holding section.
As the further improvement of an embodiment of the present invention, described alligator clamp also includes being vertically installed in described first arm
With a pair the 3rd gobos at least one of described second arm, described in a pair, the 3rd gobo is respectively arranged at described introducing pin
Opposite sides.
One of for achieving the above object, an embodiment of the present invention additionally provides a kind of conduit and introduces needle assembly,
Including:
Introduce needle assembly, including introducing pin and being fixed on the needle stand of described introducing pin near-end, described introducing pin include shank,
At the needle point of described shank far-end and be arranged at the sudden change portion between described needle point and described shank near-end；
Conduit tube component, including conduit and the catheter block that is connected to described catheter proximal end；It is characterized in that,
Safety device as above, is movably connected on the near-end of described conduit tube component.
As the further improvement of an embodiment of the present invention, the near-end of described catheter block is provided with connecting portion, described pin
The far-end of cover is provided with holding section, and described holding section can be engaged to described connecting portion so that far-end and the described conduit of described needle housing
The near-end of seat is the most mutually socketed.
As the further improvement of an embodiment of the present invention, the near-end of described catheter block is socketed on the far-end of described needle housing
Outside, the far-end of described needle housing is set to some elastic components separated from one another；Before described introducing pin is extracted out, described introducing
Pin supports some described elastic components；After described introducing pin is extracted out, described elastic component can move radially inward so that described card
Described connecting portion is deviate from portion of holding.
One of for achieving the above object, an embodiment of the present invention additionally provides a kind of remaining needle, described remaining needle
Including safety device as above or conduit as above with introduce needle assembly.
Compared with prior art, the method have the advantages that and support the of described introducing pin respectively by arranging
One gobo and the second gobo and locating part, after making described introducing pin extract out, its needle point is closed by described safety device, subtracts
Little needle point leak outside cause stab risk and infection risk.
Accompanying drawing explanation
Fig. 1 is the structural representation of the remaining needle of an embodiment of the present invention；
Fig. 2 is conduit and the structural representation of introducing needle assembly of an embodiment of the present invention, and it also illustrates alligator clamp
State diagram before triggering；
Fig. 3 is conduit and the structural blast figure of introducing needle assembly of an embodiment of the present invention；
Fig. 4 is the longitudinal section of line A-A along Fig. 2；
Fig. 5 is the enlarged drawing of the alligator clamp of an embodiment of the present invention；
The close-up schematic view in Tu6Shi Tu4Zhong B district；
The conduit of Fig. 7 an embodiment of the present invention and the state diagram after alligator clamp triggers of the introducing needle assembly；
Fig. 8 is the longitudinal section of line C-C along Fig. 7；
Fig. 9 is the structural representation of the safety device of another embodiment of the present invention；
Figure 10 is the safety device schematic diagram by far-end proximally visual angle of another embodiment of the present invention.
Detailed description of the invention
Describe the present invention below with reference to detailed description of the invention shown in the drawings.But these embodiments are also
It is not intended to the present invention, structure that those of ordinary skill in the art is made, method or functionally according to these embodiments
Conversion is all contained in protection scope of the present invention.
For clearly expressing position described in the application and direction, using exercises on apparatus author as reference, near operation
One end of person is near-end, and the one end away from operator is far-end.Meanwhile, in this application, the direction proximally and distally limited is fixed
Justice is longitudinally, and the axis parallel of conduit and introducing needle assembly is in described longitudinal direction；Vertically the direction away from described axis is defined as
Outward, in the vertical direction near described axis is defined as；The inside and outside direction limited is defined as radially, being perpendicular to described longitudinal
Plane definition is cross section.
Referring to Fig. 1, the remaining needle 100 that an embodiment of the present invention provides, including conduit and introducing needle assembly 1, extension 2
With positive pressure needle-free connector 3.Described conduit and introducing needle assembly 1 are for puncturing tissue, so that described remaining needle 100 is even
It is passed through Ink vessel transfusing.Described extension 2 is connected to described conduit and introduces between needle assembly 1, described positive pressure needle-free connector 3.Logical
Cross described positive pressure needle-free connector 3 and can carry out the input of medicine or nutriment.
Conduit tube component 10, safety dress is included referring to Fig. 2 and Fig. 3, the conduit of an embodiment of the present invention and introducing needle assembly 1
Put 20 and introduce needle assembly 30.
Described introducing needle assembly 30 includes introducing pin 31 and needle stand 32.Described introducing pin 31 has the pin extended longitudinally
Bar, it is positioned at the needle point 311 of described shank far-end, blood back groove 312 and sudden change portion 313.Wherein, described needle point 311 in sharp bevel,
Puncture for tissue.Described sudden change portion 313 is arranged between described needle point 311 and described shank near-end and near institute
Stating needle point 311 to arrange, described sudden change portion 313 specifically can be set to the increase position that diameter increases as shown in accompanying drawing embodiment,
Or may be configured as at least at a flat position that width is bigger in the radial direction.It addition, described needle stand 32 is fixedly installed on described
Introduce the near-end of pin 31, and be provided with a gripping tab 321, for gripping and driving described introducing pin 31 by described needle stand 32
Along lengthwise movement.Further, described introducing pin 31 is located substantially on the axis of described conduit and introducing needle assembly 1.
Described conduit tube component 10 includes conduit 11 and catheter block 12.Described conduit 11 extends longitudinally, and its near-end is fixing even
It is connected to described catheter block 12.Described introducing pin 31 can be placed through the described interior and described needle point 311 of conduit 11 and protrude out institute to far-end
State the far-end of conduit 11.Preferably, described conduit 11 is set to transparent or semitransparent material to observe at described blood back groove 312
Blood backflow situation.
In an embodiment of the present invention, described safety device 20 is slideably positioned in described introducing needle assembly 30 and described leads
Between pipe assembly 10, it includes needle housing 21, alligator clamp 22 and locating part 23.
Concrete, referring to Fig. 4 to Fig. 8, described needle housing 21 surrounds passage 202 and containing cavity 201.Described passage 202 is along vertical
To extending and described introducing pin 31 can be made through described needle housing 21.Preferably, the cross section of described passage 202 be provided in round and
Diameter is more than the diameter of described introducing pin 31.Described containing cavity 201 is overlapping with described passage 202 partial intersection.
Described alligator clamp 22 is arranged in described containing cavity 201, including compact model and open pattern.When described introducing pin
31 when proximally being extracted out by far-end, described alligator clamp 22 can from described compact model move to described in open pattern, for limit
Make described needle point 311 distal movement.Wherein, define described alligator clamp 22 from described compact model move to described in open pattern
The triggering that process is described alligator clamp 22.
Concrete, described alligator clamp 22 includes first arm the 222, second arm 223, be arranged on described first arm 222 the
One gobo 2221 and be arranged at the second gobo 2231 on described second arm 223.Wherein, described first arm 222 and described second
Arm 223 is relatively arranged on the both sides of described passage 202, when described introducing pin 31 by described passage 202 through described needle housing 21
Time, described first arm 222 both sides that separate from described introducing pin 31 relative with described second arm 223.
Described first gobo 2221, described second gobo 2231 are connected to described first arm 222, described with an angle respectively
On second arm 223.Before described introducing pin 31 is extracted out, described introducing pin 31 compresses described first gobo 2221 and described second
Gobo 2231, so that the most described first gobo 2221 is by compressive deformation, described alligator clamp 22 is positioned at described compact model.Institute
State after introducing pin 31 extracts out, described alligator clamp 22 be positioned at described in open module, namely the most described first gobo 2221 is released
Put the far-end upspringing and moving to described needle point 311, to limit described introducing pin 311 outside far-end removes described needle housing 21.
Further, described alligator clamp 22 includes connecting the of described first arm 222 near-end and described second arm 223 near-end
Three arms 221, described 3rd arm 221 is roughly parallel to cross section.Described 3rd arm 221 includes the first through hole 2210, described introducing
Pin 31 may pass through described first through hole 2210 and is held between described first arm 222 and described second arm 223.
Further, described alligator clamp 22 also includes that location division 224, described location division 224 are used for and described needle housing 21
Medial wall engagement connects, and then at least limits described alligator clamp 22 in the upper relative motion with described needle housing 21.So, may be used
Described alligator clamp 22 is avoided to depart from its predeterminated position.
In an embodiment of the present invention, the opposite sides that described location division 224 is set in described keeper 224 is outside
The medial wall interference fit of two flexure strips protruded out, described flexure strip and described needle housing 21.So, described alligator clamp 22 can be made
Position more stable.
Further, described first gobo 2221, described second gobo 2231 respectively towards described second arm 223, described
One arm 222 extends, so that described first gobo 2221 and described second gobo 2231 are held in the phase of described introducing pin 31 respectively
To both sides.Preferably, described first gobo 2221 and described second gobo 2231 have a spacing, described second flag in the vertical
Plate 2231 is located relatively at the near-end of described first gobo 2221.Before described introducing pin 31 is extracted out, described first gobo 2221
With described second gobo 2231 all by compressive deformation.After described introducing pin 31 is extracted out, described first gobo 2221 is released
To the described passage 202 closing described needle point 311 far-end；And described second gobo 2231 still supports described introducing pin 31, and
Putting on a resist force on described introducing pin 31, described resist force has the component of the most described first arm 222.So,
The needle point 311 making described introducing pin 31 has and bends with the trend away from described passage 202 towards described first arm 222, can enter
One step ensures described first gobo 2221 sealing effect to described introducing pin 31.
Further, in an embodiment of the present invention, described first arm 222 and at least one of described second arm 223
On be vertically installed with a pair the 3rd gobos.In accompanying drawing embodiment, described first arm 222 is provided with the 3rd gobo described in a pair
2222, the 3rd gobo 2222 described in a pair separates from the opposite sides of described introducing pin 31 and each described 3rd gobo 2222 edge
The longitudinally perpendicular plane in described first arm 222 extends；Described second arm 223 is provided with the 3rd gobo 2232 described in a pair, and one
Opposite sides and each described 3rd gobo 2232 that described 3rd gobo 2232 separates from described introducing pin 31 hang down along longitudinal
Directly the plane in described second arm 223 extends.So, described introducing pin 31 can be limited by described 3rd gobo 2222,2232
Skew.
Further, after described introducing pin 31 is extracted out, described locating part 23 is used for limiting described needle point 311 proximally
Remove outside described needle housing 21.
Specifically, described needle housing 21 includes that the second containing cavity 212, described locating part 23 are arranged in described containing cavity 212.
The middle part of described locating part 23 has the second through hole 231, and described second through hole 231 is positioned on described passage 202 and be set to can
Allow that described shank passes through, but do not allow described sudden change portion 313 to pass through.That is, the internal diameter of described second through hole 231 is slightly larger than institute
State the external diameter of shank and be less than the external diameter in described sudden change portion 313.
Further, in an embodiment of the present invention, described safety device 20 is releasably attached to described conduit set
On part 10.The far-end 211 of described needle housing 21 is provided with holding section 2111, and the near-end 121 of described catheter block 12 is provided with connecting portion
1211, described holding section 2111 can be engaged to described connecting portion 1211 so that described far-end 211 be socketed on separatably described closely
On end 121.So, after described introducing pin 31 is extracted out, described safety device 20 is lighter with the pull-off of described conduit tube component 10
The most laborsaving.
In accompanying drawing embodiment, described holding section 2111 is set to protrude out the annular projection of described far-end 211 outer surface, institute
State connecting portion 1211 and be set to recessed in the annular recess of described near-end 121 inner surface, so that described far-end 211 is socketed on described
Near-end 121 is internal.
Referring to Fig. 9 and Figure 10, which illustrating the safety device 20 ' of another embodiment of the present invention, present embodiment is with upper
The distinctive points of one embodiment is: the structure of the far-end 211 ' of needle housing 21 ' is different.In addition to this distinctive points, other structures with
A upper embodiment is identical, does not repeats them here.Below this distinctive points is described in detail.
The far-end 211 ' of described needle housing 21 ' is set to some elastic components separated from one another, described elastic component can radially to
Interior motion.Before described introducing pin is extracted out, described introducing pin passes described needle housing 20 ', described introducing in described passage 202 '
Pin supports described elastic component, moves radially inward, so that described safety device 20 ' is connected to institute limiting described elastic component
State conduit tube component；After described introducing pin is extracted out, described elastic component can move radially inward so that described holding section 2111 '
Deviate from described connecting portion (not shown), so, can make that described safety device 20 ' is more smooth must depart from described conduit tube component.
Specifically, described needle housing 21 ' includes orthogonal first separation trough 2101 ' and the second separation trough 2102 ', so that
Described far-end 211 ' forms the described elastic component of separated from one another four.Four described elastic components are surrounded on the week of described passage 202 '
Enclosing, before described introducing pin is extracted out, described introducing pin is in described passage 202 ' through described needle housing 20 ', and described introducing pin supports
Hold described elastic component, move radially inward limiting described elastic component；Described introducing pin extract out after, described introducing pin to
Near-end departs from described far-end 211 ' and no longer supports described elastic component, and described elastic component can move radially inward so that described card
Hold portion 2111 ' and depart from described connecting portion.So, described safety device 20 ' can be made the most laborsaving more suitable with the pull-off of described catheter block
Freely.
Certainly, at other embodiments, the number of described elastic component may also be configured to two or other, its shape does not limits
Fan-shaped in the right angle of present embodiment.
Compared with prior art, the method have the advantages that and support the of described introducing pin respectively by arranging
One gobo and the second gobo and locating part, after making described introducing pin extract out, its needle point is closed by described safety device, subtracts
Little needle point leak outside cause stab risk and infection risk.
Those listed above detailed description is only for illustrating of the feasibility embodiment of the present invention, and they are also
Being not used to limit the scope of the invention, all equivalent implementations or changes made without departing from skill of the present invention spirit all should
Within being included in protection scope of the present invention.
Claims (10)
1. a safety device, introduces pin for clearance fit, it is characterised in that described safety device includes:
Needle housing, surrounds the passage by proximate longitudinal extension and the containing cavity intersected with described channel part, described passage
It is configured such that described introducing pin passes through；
Alligator clamp, is arranged in described containing cavity, including be relatively arranged on the first arm of described passage both sides and the second arm and
It is respectively arranged at the first gobo on described first arm and described second arm and the second gobo；
Locating part, after extracting out at described introducing pin, the distal needle limiting described introducing pin proximally removes described pin
Outside cover；
Wherein, before described introducing pin is extracted out, described introducing pin compresses described first gobo and described second gobo so that institute
State alligator clamp and be positioned at compact model；After described introducing pin is extracted out, the most described first gobo is released and moves to described
The far-end of needle point is to limit described introducing pin outside far-end removes described needle housing.
Safety device the most according to claim 1, it is characterised in that after described introducing pin is extracted out, described second flag
Plate puts on a resist force on described introducing pin, and described resist force has the component of the most described first arm.
Safety device the most according to claim 1, it is characterised in that described alligator clamp also includes location division, described location
Portion is connected for engaging with the medial wall of described needle housing, to limit the length travel of the most described needle housing of described alligator clamp.
Safety device the most according to claim 1, is connected to the near-end of conduit tube component, described conduit tube component include conduit,
And it being connected to the catheter block of described catheter proximal end, it is characterised in that the near-end of described catheter block is provided with connecting portion, described needle housing
Far-end be provided with holding section, described holding section can be engaged to described connecting portion so that far-end and the described catheter block of described needle housing
Near-end be the most mutually socketed.
Safety device the most according to claim 4, it is characterised in that the near-end of described catheter block is socketed on described needle housing
The outside of far-end, the far-end of described needle housing is set to some elastic components separated from one another；Before described introducing pin is extracted out, described
Introduce pin and support some described elastic components；Described introducing pin extract out after, described elastic component can move radially inward so that
Described connecting portion is deviate from described holding section.
Safety device the most according to claim 1, it is characterised in that described alligator clamp also includes being vertically installed in described
A pair the 3rd gobos at least one of one arm and described second arm, described in a pair, the 3rd gobo is respectively arranged at described introducing
The opposite sides of pin.
7. conduit and an introducing needle assembly, including:
Introducing needle assembly, including introducing pin and being fixed on the needle stand of described introducing pin near-end, described introducing pin includes shank, is positioned at
The needle point of described shank far-end and be arranged at the sudden change portion between described needle point and described shank near-end；
Conduit tube component, including conduit and the catheter block that is connected to described catheter proximal end；It is characterized in that,
Safety device as described in any one of claim 1～6, is movably connected on the near-end of described conduit tube component.
Conduit the most according to claim 7 and introducing needle assembly, it is characterised in that the near-end of described catheter block is provided with even
Meeting portion, the far-end of described needle housing is provided with holding section, and described holding section can be engaged to described connecting portion so that described needle housing remote
The near-end with described catheter block is held the most mutually to be socketed.
Conduit the most according to claim 8 and introducing needle assembly, it is characterised in that the near-end of described catheter block is socketed on institute
Stating the outside of the far-end of needle housing, the far-end of described needle housing is set to some elastic components separated from one another；Extract out at described introducing pin
Before, described introducing pin supports some described elastic components；After described introducing pin is extracted out, described elastic component can be transported radially inward
It is dynamic so that described connecting portion is deviate from described holding section.
10. a remaining needle, it is characterised in that described remaining needle includes the safety device as described in any one of claim 1～6
Or as claimed in claim 7 conduit and introduce needle assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610770722.4A CN106267521B (en) | 2016-08-30 | 2016-08-30 | Safety device, catheter, introducer needle assembly, and indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610770722.4A CN106267521B (en) | 2016-08-30 | 2016-08-30 | Safety device, catheter, introducer needle assembly, and indwelling needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106267521A true CN106267521A (en) | 2017-01-04 |
| CN106267521B CN106267521B (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610770722.4A Active CN106267521B (en) | 2016-08-30 | 2016-08-30 | Safety device, catheter, introducer needle assembly, and indwelling needle |
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Cited By (3)
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| CN110446520A (en) * | 2017-03-17 | 2019-11-12 | 贝克顿·迪金森公司 | Midline catheter apparatus for placing |
| CN110582318A (en) * | 2017-05-15 | 2019-12-17 | 福建省百仕韦医用高分子股份有限公司 | Needle puncture subassembly is kept somewhere to spacing formula safety type of stay cord |
| CN111132719A (en) * | 2017-07-19 | 2020-05-08 | 贝克顿·迪金森公司 | Extension piece for accommodating probe or intravenous catheter |
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| Publication number | Publication date |
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| CN106267521B (en) | 2023-04-07 |
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