CN104721912B - A kind of disposable anti-blood vessel punch through style intravenous infusion needle - Google Patents
A kind of disposable anti-blood vessel punch through style intravenous infusion needle Download PDFInfo
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- CN104721912B CN104721912B CN201510135197.4A CN201510135197A CN104721912B CN 104721912 B CN104721912 B CN 104721912B CN 201510135197 A CN201510135197 A CN 201510135197A CN 104721912 B CN104721912 B CN 104721912B
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- needle
- conduit
- draw point
- catheter block
- blood vessel
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- 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
- A61M2005/1588—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body having means for monitoring, controlling or visual inspection, e.g. for patency check, avoiding extravasation
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of disposable anti-blood vessel punch through style intravenous infusion needle, it includes：It includes draw point component and conduit tube component, wherein：The draw point component includes the draw point of needle stand and tubulose, and the draw point is fixedly connected on the needle stand；The conduit tube component includes catheter block and conduit；The conduit is connected to the catheter block of tubular, and the draw point is through the catheter block and is inserted in the inside of the conduit；When axial movement of the needle stand along the conduit, being connected to the needle point of the draw point of the needle stand can stretch out or retract from the end of the conduit, and axial limit structure and radial direction position limiting structure are provided between the needle stand and the catheter block.So in infusion process, the inside of the needle point retraction conduit of draw point.The needle point of draw point will not wear out blood vessel.Disposable anti-blood vessel punch through style intravenous infusion needle is extracted after the completion of infusion, the needle point of draw point is still in the inside of conduit at this time, and the syringe needle of draw point will not injure medical staff and other staff in overall process.
Description
Technical field
The invention belongs to field of medical device, is related to a kind of disposable anti-blood vessel punch through style intravenous infusion needle.
Background technology
The intravenous infusion needle clinically now used is mainly made of helmet, draw point, needle stand, pin fin, connecting tube.Use
When, medical staff first removes the helmet covered on draw point, then carries out vein blood vessel puncture using draw point, sees blood back and confirms to wear
Infuse after piercing successfully, during the entire process of infusion, draw point stay in always it is intravascular, yet with draw point needle point very
Sharp keen, patient unfolds limbs in infusion, and it is very big to be worn out the probability of blood vessel by draw point, especially to children and mental patient；It is defeated
For liquid pin after infusion-completed, medical staff extracts draw point from the vein blood vessel of human body out, speckle with patient blood draw point it is exposed
Outside, easily causes the accidental injury and infection of medical staff and patient.
The content of the invention
The present invention provides a kind of disposable anti-blood vessel punch through style intravenous infusion needle, and the disposable anti-blood vessel punch through style vein is defeated
Liquid pin and it can solve the problems, such as that transfusion needle of the prior art is easily unexpected in use and stab.
Technical scheme includes a kind of disposable anti-blood vessel punch through style intravenous infusion needle, it include draw point component with
And conduit tube component, wherein：
The draw point component includes the draw point of needle stand and tubulose, and the draw point is fixedly connected on the needle stand；
The conduit tube component includes catheter block and conduit；The conduit is connected to the catheter block of tubular, and the draw point is worn
Cross the catheter block and be inserted in the inside of the conduit；When axial movement of the needle stand along the conduit, it is connected to
The needle point of the draw point of the needle stand can be stretched out or retracted from the end of the conduit, between the needle stand and the catheter block
It is provided with axial limit structure and radial direction position limiting structure.
The present invention it is disposable anti-blood vessel punch through style intravenous infusion needle further improvement lies in that：The axial limit structure
Including buckle and fixture block, the buckle is protrusively provided to be set in the needle stand close to the side of the catheter block, the fixture block
Put with the catheter block close to the side of the needle stand, the side of the buckle is provided with the card slot coordinated with the fixture block；When
When the needle stand is close to the catheter block, the needle point of the draw point is stretched out from the sleeve；When the fixture block is caught in the card
During groove, the inside of the needle point retraction conduit of the draw point.
The present invention it is disposable anti-blood vessel punch through style intravenous infusion needle further improvement lies in that：The axial limit structure
The deep card slot and shallow card slot plugged including fixture block and for the fixture block；The fixture block is arranged at the needle stand close to the conduit
The side of seat, the depth card slot and the shallow card slot are arranged at the catheter block close to the side of the needle stand, the deep card
The length of groove is more than the length of the shallow card slot；When the fixture block is inserted in the deep card slot completely, the needle point of the draw point
Stretched out from the conduit；When the fixture block is inserted in the shallow card slot completely, the needle point retraction conduit of the draw point.
The present invention it is disposable anti-blood vessel punch through style intravenous infusion needle further improvement lies in that：The radial direction position limiting structure
For columnar rubber plug, the radial direction position limiting structure is inserted in the inside of the catheter block of tubular, is set on the radial direction position limiting structure
There is the limiting through hole coaxial with the conduit, the draw point is arranged in the limiting through hole.
The present invention it is disposable anti-blood vessel punch through style intravenous infusion needle further improvement lies in that：The radial direction position limiting structure
Including needle holder core and at least two cushion rubbers, the cylindric needle holder core is connected to the needle stand close to the one of the catheter block
Side, the needle holder core are inserted in the inside of the catheter block of tubular；The cushion rubber is sheathed on the outside of the needle holder core, and
It is close to the inner wall of the catheter block.
The present invention it is disposable anti-blood vessel punch through style intravenous infusion needle further improvement lies in that：The axial limit structure
Including hemisphere and helical orbit, the helical orbit is arranged at the side of the needle holder core, is fixedly connected on the conduit
The hemisphere of the inner wall of seat is slidedly arranged on the helical orbit.
The present invention it is disposable anti-blood vessel punch through style intravenous infusion needle further improvement lies in that：The draw point component also wraps
The pin fin of sheet is included, the pin fin is connected to the side of the needle stand.
The present invention it is disposable anti-blood vessel punch through style intravenous infusion needle further improvement lies in that：The catheter tip is in circle
Taper.
The present invention it is disposable anti-blood vessel punch through style intravenous infusion needle further improvement lies in that：The inside of the catheter block
A lining core is provided with, the lining core is fixedly connected on the inner wall of the catheter block and the conduit, is offered in the lining core
The coaxial through hole with the conduit.
The present invention it is disposable anti-blood vessel punch through style intravenous infusion needle further improvement lies in that：The draw point component also wraps
Connecting tube is included, the connecting tube is connected to the needle stand, and the draw point and the connecting tube are interconnected, the connecting tube
End is connected with female Luer.
Technical scheme has the following technical effect that：Pin fin is pulled so that needle stand revolves after puncture of steel needles success
Turn, in the rotary course of needle stand, under the action of hemisphere and helical orbit, the needle point for being connected to the draw point of needle stand is retracted
The inside of conduit.So in infusion process, the needle point of draw point will not wear out blood vessel, reduce the fear of patient, improve comfortable
Degree.Disposable anti-blood vessel punch through style intravenous infusion needle is extracted after the completion of infusion, the needle point of draw point is still in conduit at this time
Portion, the syringe needle of draw point will not injure medical staff and other staff in overall process.
Brief description of the drawings
Fig. 1 is the three-dimensional view of the disposable anti-blood vessel punch through style intravenous infusion needle of the present invention in the first embodiment；
Fig. 2 is the stereopsis before disposable anti-blood vessel punch through style intravenous infusion needle of the invention in the first embodiment use
Figure；
Fig. 3 is the stereopsis after disposable anti-blood vessel punch through style intravenous infusion needle of the invention in the first embodiment use
Figure；
Fig. 4 is the three-dimensional view of the disposable anti-blood vessel punch through style intravenous infusion needle of the present invention in a second embodiment；
Fig. 5 is the three-dimensional view of the disposable anti-blood vessel punch through style intravenous infusion needle of the present invention in the third embodiment；
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
It is situated between below in conjunction with the accompanying drawings to the first embodiment of the disposable anti-blood vessel punch through style intravenous infusion needle of the present invention
Continue：
As shown in Figure 1, the disposable anti-blood vessel punch through style intravenous infusion needle of the present invention includes draw point component and conduit group
Part, wherein：
Draw point component includes the draw point 1-4 of connecting tube 1-10, needle stand 1-5 and tubulose.Draw point 1-4 and connecting tube 1-10 are equal
It is fixedly connected on needle stand 1-5, draw point 1-4 and connecting tube 1-10 to be interconnected, the end of connecting tube 1-10 is connected with female Luer
1-11.The pin fin 1-6 of sheet is connected with the side of needle stand 1-5.
Conduit tube component includes catheter block 1-3 and conduit 1-1.One end of conduit 1-1 is connected to the catheter block 1-3 of tubular,
Its other end is in coniform.Catheter block 1-3's is internally provided with a lining core 1-2, and lining core 1-2 is fixedly connected on catheter block 1-3's
Inner wall, while lining core 1-2 is also attached to conduit 1-1.Lining core 1-2 offers the through hole coaxial with conduit 1-1, the diameter of the through hole
Slightly larger than the diameter of draw point 1-4.
One end of the catheter block 1-3 of tubular is connected with conduit 1-1, its other end is opening.The steel of draw point component during installation
Pin 1-4 stretches into the inside of catheter block 1-3 by above-mentioned opening.Draw point 1-4 passes through the through hole of catheter block 1-3 and lining core 1-2 most
The inside of conduit 1-1 is inserted in eventually.When draw point component needle stand 1-5 along conduit 1-1 axial movement when, be connected to needle stand 1-5
Draw point 1-4 needle point can from the end of conduit 1-1 stretch out or retract.Axial direction is provided between needle stand 1-5 and catheter block 1-3
Position limiting structure and radial direction position limiting structure.
Radial direction position limiting structure includes needle holder core 1-7, the first cushion rubber 1-8 and the second cushion rubber 1-9 in the present embodiment.Cylinder
The needle holder core 1-7 of shape is highlightedly connected to needle stand 1-5 close to the side of catheter block 1-3.The axle center of needle holder core 1-7 is provided with for steel
The through hole that pin 1-4 is passed through, the diameter of the outer wall of needle holder core 1-7 are slightly less than the diameter of catheter block 1-3 inner walls.Needle holder core 1-7 passes through
The opening of catheter block 1-3 ends is inserted in the inside of the catheter block 1-3 of tubular.It is certain that two intervals are provided with needle holder core 1-7
The groove of distance.Above-mentioned two is individually fixed in around the first cushion rubber 1-8 and the second cushion rubber 1-9 for being sheathed on needle holder core 1-7
In groove.Above-mentioned groove can prevent the first cushion rubber 1-8 and the second cushion rubber 1-9 sliding axially along needle holder core.First cushion rubber
It is close to the inner wall of catheter block 1-3 on the outside of 1-8 and the second cushion rubber 1-9, the first cushion rubber 1-8 and the second cushion rubber 1-9 can be with
Play the role of sealing.If needle stand 1-5 along catheter block 1-3 radial motion when, the draw point 1-4 being inserted in conduit 1-1 is deposited
In the risk to fracture, the setting of radial limiting device can prevent axial-movements of the needle stand 1-5 along catheter block 1-3, so as to reduce
The risk that draw point 1-4 fractures.
Axial limit structure includes hemisphere 1-12 and helical orbit 1-13 in the present embodiment.Helical orbit 1-13 is set
The outer surface of needle holder core 1-7 side walls is placed in, the hemisphere 1-12 for being fixedly connected on the inner wall of catheter block 1-3 is slidedly arranged on helical orbit
1-13.Pulling pin fin 1-6 can cause needle stand 1-5 to be rotated along its axis, when needle stand 1-5 is rotatable around its axis, in needle stand
Under the action of the helical orbit and hemisphere 1-12 of core 1-7, axial movements of the needle holder core 1-7 along conduit 1-1.As needle stand 1-5
Along the axis of conduit 1-1 to catheter block move when, be connected to the needle point of draw point 1-4 of needle stand 1-5 from the coniform of conduit 1-1
End is stretched out.When opposite direction rotates needle stand 1-5, needle stand 1-5 is moved in the opposite direction, the needle point retraction conduit 1-1's of draw point 1-4
It is internal.
Implement below in conjunction with the accompanying drawings to the first of disposable anti-blood vessel punch through style intravenous infusion needle application method of the invention
Example is introduced：
As shown in Fig. 2, when the disposable anti-blood vessel punch through style intravenous infusion needle of the present embodiment is not used, needle stand 1-5 is tight
Catheter block 1-3 is affixed on, the needle point of draw point 1-4 is stretched out from the coniform end of conduit 1-1.In use, the needle point by draw point 1-4
Blood vessel is pierced into, the conduit 1-1 being placed on the outside of draw point 1-4 is simultaneously pierced into blood vessel in the lump.The end of conduit 1-1 is circular cone
Shape, this shape are easy to conduit 1-1 being together pierced into blood vessel with the needle point of draw point 1-4.
As shown in Figures 2 and 3, pin fin 1-6 is pulled after draw point 1-4 is punctured successfully causes needle stand 1-5 to rotate, in needle stand
In the rotary course of 1-5, under the action of hemisphere 1-12 and helical orbit 1-13, it is connected to the draw point 1-4's of needle stand 1-5
The inside of needle point retraction conduit 1-1.So in infusion process, the needle point of draw point 1-4 will not wear out blood vessel, reduce fearing for patient
Fear sense, improve comfort level.Disposable anti-blood vessel punch through style intravenous infusion needle is extracted after the completion of infusion, at this time the pin of draw point 1-4
Point is still in the inside of conduit 1-1, and the syringe needle of draw point 1-4 will not injure medical staff and other staff in overall process.
It is situated between below in conjunction with the accompanying drawings to the second embodiment of the disposable anti-blood vessel punch through style intravenous infusion needle of the present invention
Continue：
As shown in figure 4, the disposable anti-blood vessel punch through style intravenous infusion needle of the present invention includes draw point component and conduit group
Part, wherein：
Draw point component includes the draw point 2-4 of needle stand 2-5 and tubulose.Draw point 2-4 is fixedly connected on needle stand 2-5.In needle stand
The side of 2-5 is connected with the pin fin 2-6 of sheet.
Conduit tube component includes catheter block 2-3 and conduit 2-1.One end of conduit 2-1 is connected to the catheter block 2-3 of tubular,
Its other end is in coniform.Catheter block 2-3's is internally provided with a lining core 2-2, and lining core 2-2 is fixedly connected on catheter block 2-3's
Inner wall, while lining core 2-2 is also attached to conduit 2-1.Lining core 2-2 offers the through hole coaxial with conduit 2-1, the diameter of the through hole
Slightly larger than the diameter of draw point 2-4.
One end of the catheter block 2-3 of tubular is connected with conduit 2-1, its other end is opening.The steel of draw point component during installation
Pin 2-4 stretches into the inside of catheter block 2-3 by above-mentioned opening.Draw point 2-4 passes through the through hole of catheter block 2-3 and lining core 2-2 most
The inside of conduit 2-1 is inserted in eventually.When draw point component needle stand 2-5 along conduit 2-1 axial movement when, be connected to needle stand 2-5
Draw point 2-4 needle point can from the end of conduit 2-1 stretch out or retract.Axial direction is provided between needle stand 2-5 and catheter block 2-3
Position limiting structure and radial direction position limiting structure 2-22.
Radial direction position limiting structure 2-22 is columnar rubber plug in the present embodiment, and radial direction position limiting structure 2-22 is inserted in tubular
The inside of catheter block 2-3, the side wall of radial direction position limiting structure 2-22 are close to the inner wall of catheter block 2-3.Radial direction position limiting structure 2-22
On be provided with the limiting through hole coaxial with conduit 2-1, the diameter of the limiting through hole is slightly larger than the diameter of draw point 2-4, and draw point 2-4 is worn
Limiting through hole is lived arranged on business.If needle stand 2-5 along catheter block 2-3 radial motion when, the draw point 2-4 that is inserted in conduit 2-1
In the presence of the risk to fracture, the setting of radial direction position limiting structure 2-22 can prevent axial-movements of the needle stand 2-5 along catheter block 2-3, from
And reduce the risk that draw point 2-4 fractures.
In the present embodiment axial limit structure include fixture block 2-12 and the deep card slot 2-13 that plugs for fixture block 2-12 and
Shallow card slot 2-14.Fixture block 2-12 is protrusively provided in needle stand 2-5 close to the side of catheter block 2-3.Deep card slot 2-13 and shallow card
Groove 2-14 is arranged at catheter block 2-3 close to the side of needle stand 2-5.The length of deep card slot 2-13 along catheter block 2-3 axial directions is more than shallow
Length of the card slot 2-14 along catheter block 2-3 axial directions.When fixture block 2-12 is inserted in deep card slot 2-13 completely, the needle point of draw point 2-4
Stretched out from conduit 2-1.When fixture block 2-12 is inserted in shallow card slot 2-14 completely, one is kept between needle stand 2-5 and catheter block 2-3
The needle point retraction conduit 2-1 of set a distance, at this time draw point 2-4.
Implement below in conjunction with the accompanying drawings to the second of disposable anti-blood vessel punch through style intravenous infusion needle application method of the invention
Example is introduced：
When the disposable anti-blood vessel punch through style intravenous infusion needle of the present embodiment is not used, the fixture block 2-12 on needle stand 2-5
The inside of deep card slot 2-13 is inserted in, the needle point of draw point 2-4 is stretched out from the coniform end of conduit 2-1.In use, by draw point
The needle point of 2-4 is pierced into blood vessel, and the conduit 2-1 being placed on the outside of draw point 2-4 is simultaneously pierced into blood vessel in the lump.The end of conduit 2-1
Portion is coniform, and this shape is easy to conduit 2-1 being together pierced into blood vessel with the needle point of draw point 2-4.
Pin fin 2-6 is pulled after draw point 2-4 is punctured successfully, by the fixture block 2-12 on needle stand 2-5 from deep card slot 2-13
Extract, then fixture block 2-12 is inserted into shallow card slot 2-14.After the fixture block 2-12 of needle stand 2-5 is inserted into shallow card slot 2-14, connection
In the inside of the needle point retraction conduit 2-1 of the draw point 2-4 of needle stand 2-5.So in infusion process, the needle point of draw point 2-4 will not
Blood vessel is worn out, reduces the fear of patient, improves comfort level.It is defeated that disposable anti-blood vessel punch through style vein is extracted after the completion of infusion
Liquid pin, the needle point of draw point 2-4 is still in the inside of conduit 2-1 at this time, and the syringe needle of draw point 2-4 will not injure medical care in overall process
Personnel and other staff.
It is situated between below in conjunction with the accompanying drawings to the 3rd embodiment of the disposable anti-blood vessel punch through style intravenous infusion needle of the present invention
Continue：
As shown in figure 5, the main distinction of 3rd embodiment and first embodiment is axial limit structure.In the present embodiment
In, axial limit structure includes buckle 3-13 and fixture block 3-12.Buckle 3-13 is protrusively provided in needle stand 3-5 close to catheter block
The side of 3-3, fixture block 3-12 are arranged at catheter block 3-3 close to the side of needle stand 3-5.The side of buckle 3-13 is provided with and fixture block
The card slot 3-14 that 3-12 coordinates.When needle stand 3-5 is close to catheter block 3-3, the needle point of draw point 3-4 is stretched out from conduit 3-1；Work as card
When block 3-12 is caught in the card slot 3-14 of buckle 3-13 sides, needle stand 3-5 and catheter block 3-3 are maintained a certain distance, at this time draw point
The inside of the needle point retraction conduit 3-1 of 3-4.
Implement below in conjunction with the accompanying drawings to the 3rd of disposable anti-blood vessel punch through style intravenous infusion needle application method of the invention the
Example is introduced：
When the disposable anti-blood vessel punch through style intravenous infusion needle of the present embodiment is not used, needle stand 3-5 is close to catheter block
The needle point of 3-3, draw point 3-4 are stretched out from the coniform end of conduit 3-1.In use, the needle point of draw point 3-4 is pierced into blood vessel,
The conduit 3-1 being placed on the outside of draw point 3-4 is simultaneously pierced into blood vessel in the lump.The end of conduit 3-1 is coniform, this shape
Easy to which conduit 3-1 is together pierced into blood vessel with the needle point of draw point 3-4.
Pin fin 3-6, mobile needle stand 3-5 so that the fixture block 3- on catheter block 3-3 are pulled after draw point 3-4 is punctured successfully
12 are caught in the card slot 3-14 of buckle 3-13 sides.After fixture block 3-12 is caught in card slot 3-14 inside, needle stand 3-5 and catheter block 3-3
Between maintain a certain distance, be connected to the inside of the needle point retraction conduit 3-1 of the draw point 3-4 of needle stand 3-5.So infusing
The needle point of Cheng Zhong, draw point 3-4 will not wear out blood vessel, reduce the fear of patient, improve comfort level.One is extracted after the completion of infusion
The secondary anti-blood vessel punch through style intravenous infusion needle of property, the needle point of draw point 3-4 is still in the inside of conduit 3-1, the steel in overall process at this time
The syringe needle of pin 3-4 will not injure medical staff and other staff.
The above is only presently preferred embodiments of the present invention, and limitation in any form is not done to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, in the range of technical solution of the present invention is not departed from, when the technology contents using the disclosure above make a little change or repair
The equivalent embodiment for equivalent variations is adornd, as long as being the content without departing from technical solution of the present invention, the technology according to the present invention is real
Any simple modification, equivalent change and modification that confrontation above example is made, still falls within the scope of technical solution of the present invention
It is interior.
Claims (5)
- A kind of 1. disposable anti-blood vessel punch through style intravenous infusion needle, it is characterised in that including draw point component and conduit tube component, its In:The draw point component includes the draw point of needle stand and tubulose, and the draw point is fixedly connected on the needle stand；The conduit tube component includes catheter block and conduit；The conduit is connected to the catheter block of tubular, and the draw point passes through institute State catheter block and be inserted in the inside of the conduit；When axial movement of the needle stand along the conduit, it is connected to described The needle point of the draw point of needle stand can be stretched out or retracted from the end of the conduit, be set between the needle stand and the catheter block There are axial limit structure and radial direction position limiting structure；The radial direction position limiting structure includes needle holder core and at least two cushion rubbers, and the needle holder core is connected to the needle stand close to institute The side of catheter block is stated, the needle holder core is inserted in the inside of the catheter block of tubular；The cushion rubber is sheathed on the needle stand The outside of core, and it is close to the inner wall of the catheter block；The axial limit structure includes hemisphere and helical orbit, and the helical orbit is arranged at the side of the needle holder core Face, the hemisphere for being fixedly connected on the inner wall of the catheter block are slidedly arranged on the helical orbit.
- 2. disposable anti-blood vessel punch through style intravenous infusion needle as claimed in claim 1, it is characterised in that:The draw point component is also Pin fin including sheet, the pin fin are connected to the side of the needle stand.
- 3. disposable anti-blood vessel punch through style intravenous infusion needle as claimed in claim 1, it is characterised in that:The catheter tip is in It is coniform.
- 4. disposable anti-blood vessel punch through style intravenous infusion needle as claimed in claim 1, it is characterised in that:The catheter block it is interior Portion is provided with a lining core, and the lining core is fixedly connected on the inner wall of the catheter block and the conduit, is opened up in the lining core There is the through hole coaxial with the conduit.
- 5. disposable anti-blood vessel punch through style intravenous infusion needle as claimed in claim 1, it is characterised in that:The draw point component is also Including connecting tube, the connecting tube is connected to the needle stand, and the draw point and the connecting tube are interconnected, the connecting tube End is connected with female Luer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135197.4A CN104721912B (en) | 2015-03-26 | 2015-03-26 | A kind of disposable anti-blood vessel punch through style intravenous infusion needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135197.4A CN104721912B (en) | 2015-03-26 | 2015-03-26 | A kind of disposable anti-blood vessel punch through style intravenous infusion needle |
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| CN104721912A CN104721912A (en) | 2015-06-24 |
| CN104721912B true CN104721912B (en) | 2018-04-27 |
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| CN201510135197.4A Active CN104721912B (en) | 2015-03-26 | 2015-03-26 | A kind of disposable anti-blood vessel punch through style intravenous infusion needle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106924839A (en) * | 2015-12-30 | 2017-07-07 | 江苏阳普医疗科技有限公司 | A kind of safe intravenous infusion needle and its implementation |
| CN107789040B (en) * | 2016-08-31 | 2024-01-16 | 上海长征医院 | Safe medical trocar with limit structure |
| CN107789702B (en) * | 2016-08-31 | 2023-07-18 | 上海长征医院 | Safe medical trocar with back-pumping guiding structure |
| CN107049600B (en) * | 2017-05-26 | 2023-09-22 | 西安医学院第二附属医院 | Eardrum membrane treatment device |
| CN110141255A (en) * | 2019-06-19 | 2019-08-20 | 北京光耀世纪医疗科技有限公司 | Hemostix |
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| JP2910916B2 (en) * | 1995-03-16 | 1999-06-23 | ベクトン・ディキンソン・アンド・カンパニー | Assembly of catheter and guide needle |
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| CN104721912A (en) | 2015-06-24 |
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Address after: 225000, Tongxin County, Yangzhou Town, Guangling District, Jiangsu Co-patentee after: Army Medical Univ. No.2, Chinese PLA Patentee after: Jiangsu Weimao Medical Technology Co., Ltd. Address before: 225000, Tongxin County, Yangzhou Town, Guangling District, Jiangsu Co-patentee before: Army Medical Univ. No.2, Chinese PLA Patentee before: Jiangsu Yang Pu medical science and technology company limited |
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