CN208541635U - It draws back blood method and examines pipeline access self-resetting devices - Google Patents
It draws back blood method and examines pipeline access self-resetting devices Download PDFInfo
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- CN208541635U CN208541635U CN201721922089.2U CN201721922089U CN208541635U CN 208541635 U CN208541635 U CN 208541635U CN 201721922089 U CN201721922089 U CN 201721922089U CN 208541635 U CN208541635 U CN 208541635U
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Abstract
The utility model relates to the channel testers of inlying catheter, specifically one kind draws back blood method and examines pipeline access self-resetting devices, including piston cylinder, piston, drive connection part and resetting apparatus, piston is equipped in piston cylinder, the accommodating space of piston is connected in vein blood vessel between inlying catheter and liquid source capsule road, piston is connected with drive connection part, and resetting apparatus is equipped between drive connection part and piston cylinder；Piston is moved in piston cylinder by pressing drive connection part, forms negative pressure between inlying catheter in vein blood vessel and liquid source capsule road, whether has blood backflow at the detection of negative pressure inlying catheter by formation；Piston after detection is resetted after unclamping drive connection part by the active force of resetting apparatus.The utility model can be connect for a long time with inlying catheter, for checking whether pipeline is unobstructed before being infused, reduce manually-operated individual difference problem while simplifying and drawing back blood operation, significantly improve the efficiency and quality of inlying catheter nursing operation before being infused.
Description
Technical field
The utility model relates to the channel tester of inlying catheter, it is logical to draw back blood method inspection pipeline for specifically one kind
Road self-resetting devices.
Background technique
The Ministry of Public Health, China in 2014 promulgated newest " infusion care operation specification ", clear stipulaties center
Ductus venosus (CVC) includes that Peripherally Inserted Central Catheter (PICC) all must determine that conduit exists by drawing back blood
Intravenously.INS is in " 2016 infusion treatment practice standard " washing pipe and tube sealing standard: before each infusion, Ying Chongxi blood vessel is logical
Road device, and blood is drawn back, to assess catheter functions, prevent complication.In clinical infusion work, common test mode is first
Syringe ozzle is connected to perfusion tube, pulls injector push-rod, whether observation inlying catheter front end has blood return phenomenon, has obvious
Blood back then show that pipeline is unobstructed, then by syringe salt water be pushed into conduit；If no blood back or blood back slowly if show pipeline
In there is plugging, need to set pipe again.It is this to pull injector push-rod manually by medical staff, need medical staff's both hands to grasp
Make, step is more, and efficiency is lower, and pumpback dynamics have differences with apart from meeting because of operating habit difference.
Utility model content
In order to solve the above problem existing for manual operation detection path, the purpose of this utility model is to provide a kind of pumpings
Blood back method examines pipeline access self-resetting devices.The inspection pipeline access self-resetting devices are connect for a long time with inlying catheter, are used
In infusion before check inlying catheter it is whether unobstructed, simplify draw back blood operation while, reduce manually-operated individual difference
Problem significantly improves the efficiency and quality of inlying catheter nursing operation before being infused.
The purpose of this utility model is achieved through the following technical solutions:
The utility model includes piston cylinder, piston, drive connection part and resetting apparatus, is wherein equipped with work in piston cylinder
Plug, the accommodating space of the piston are connected in vein blood vessel between inlying catheter and liquid source capsule road, the piston and drive connection
Part is connected, and resetting apparatus is equipped between the drive connection part and piston cylinder；The piston is by pressing drive connection part in work
It is moved in plug cylinder, forms negative pressure between inlying catheter in vein blood vessel and liquid source capsule road, pass through the detection of negative pressure indwelling of formation
Whether there is blood backflow at conduit；The piston after detection passes through the effect of the resetting apparatus after unclamping drive connection part
Power resets；
Wherein: pressing the drive connection part band piston by original state during movement, with vein blood vessel
Spatial volume in the piston cylinder being connected between middle inlying catheter and liquid source capsule road increases, and then the indwelling in vein blood vessel
Negative pressure is formed between conduit and liquid source capsule road；
The piston cylinder is equipped with the interface with inlying catheter in vein blood vessel and liquid source pipeline connection respectively, two interfaces
It is interconnected, two interfaces are arranged on the piston cylinder or in which an interface is arranged on piston cylinder, the other end
Interface is formed by being inserted into the puncture pipe passed through in the piston cylinder and by piston；
The drive connection part includes negative pressure button and piston seat, and the middle part of the piston seat is located in the piston cylinder, simultaneously
It is connected with the piston, the opposite two sides of the piston seat are pierced by by the strip-shaped hole that piston cylinder opposite sides opens up respectively, respectively
It is connected to the negative pressure button；It is stayed respectively between the negative pressure button and piston cylinder and between piston seat and the bottom of piston cylinder
Have a space mobile with piston for negative pressure button pressed downwards and piston seat, the resetting apparatus be located at negative pressure button and piston cylinder it
Between space in or the space between piston seat and the bottom of piston cylinder in, one end and the piston cylinder of the resetting apparatus support
It connects, the other end is connected on negative pressure button or is connected to piston seat；
It is connected with threeway on the piston cylinder, an interface of the threeway passes through the interface and appearance that open up on the piston cylinder
The space for setting piston is connected, other two interface of the threeway respectively with inlying catheter in vein blood vessel and liquid source capsule road phase
Connection；
The drive connection part includes compression bar and piston rod, and one end of the piston rod is inserted into the piston cylinder, simultaneously
It is connected with the piston, the other end is located at outside piston cylinder；The compression bar is articulated on piston cylinder, one end and the piston rod
The other end it is hinged, the other end of the compression bar is free end；There are for piston between one end and piston cylinder of the piston rod
The connecting rod space mobile with piston, the resetting apparatus are located in this space, and the both ends of the resetting apparatus are connected to work respectively
One end of plug cylinder and piston rod；
The drive connection part is piston driving lever, one end of the piston driving lever be located at the piston cylinder it is interior and with piston phase
Even, the other end of the piston driving lever is pierced by by the strip-shaped hole opened up on piston cylinder；It is stayed between the piston driving lever and piston cylinder
There is the space mobile with piston for piston driving lever, the resetting apparatus is located in this space, the both ends difference of the resetting apparatus
It is connected to one end of piston cylinder and piston driving lever；
The drive connection part includes negative pressure button and negative pressure push rod, and one end of the negative pressure push rod is located at the piston cylinder
Interior and be connected with piston, the other end of the negative pressure push rod is located at the outside of piston cylinder and is connected with the negative pressure button；Institute
The protrusion for being equipped with inside piston cylinder and being limited to negative pressure push rod is stated, one end of the negative pressure push rod is abutted with the protrusion；It is described negative
It presses between button and piston cylinder and is respectively kept between one end of negative pressure push rod and the bottom of piston cylinder for negative pressure button pressed downwards
And the space that negative pressure push rod is mobile with piston, in the space between negative pressure button and piston cylinder or position of the resetting apparatus
In space between negative pressure push rod and the bottom of piston cylinder, one end of the resetting apparatus is abutted with piston cylinder, and the other end abuts
In on negative pressure button or being connected to piston；
In space between the negative pressure push rod and the bottom of piston cylinder be equipped with restore push rod, one end of the recovery push rod with
The piston abuts, and the other end is inserted in the through-hole that the piston cylinder bottom opens up, and the resetting apparatus is set in the recovery
On push rod, both ends are connected to the bottom for restoring push rod and piston cylinder respectively；
The section of the piston is " U "-shaped, and the inward flange of the " u "-shaped open end extends internally, and is formed and is connected with the driving
The extension of fitting connection；The piston is that sealing is slidably connected with the piston inside wall of cylinder.
The advantages of the utility model and good effect are as follows:
1. the utility model can be connect for a long time with inlying catheter, for checking whether pipeline is unobstructed before being infused, in simplification
Manually-operated individual difference problem is reduced while drawing back blood operation, significantly improves inlying catheter nursing operation before being infused
Efficiency and quality.
2. the utility model structure is simple, easy to operate, securely and reliably, and production cost is low.
Detailed description of the invention
Figure 1A is the front sectional view of the utility model embodiment one；
Figure 1B is the left view cross-sectional view of Figure 1A；
Fig. 2A is the front sectional view of the utility model embodiment two；
Fig. 2 B is the side view cutaway drawing of Fig. 2A；
Fig. 3 is the front sectional view of the utility model embodiment three；
Fig. 4 A is the front sectional view of the utility model embodiment four；
Fig. 4 B is the left view cross-sectional view of Fig. 4 A；
Fig. 5 A is the front sectional view of the utility model embodiment five；
Fig. 5 B is the side view cutaway drawing of Fig. 5 A；
Fig. 6 A is the front sectional view of the utility model embodiment six；
Fig. 6 B is the left view cross-sectional view of Fig. 6 A
Fig. 7 A is the front sectional view of the utility model embodiment seven；
Fig. 7 B is the side view cutaway drawing of Fig. 7 A；
Fig. 8 A is the front sectional view of the utility model embodiment eight；
Fig. 8 B is the side view cutaway drawing of Fig. 8 A；
Fig. 9 A is the front sectional view of the utility model embodiment nine；
Fig. 9 B is the side view cutaway drawing of Fig. 9 A；
Figure 10 is the section view of the utility model piston；
Wherein: 1, which is negative, presses button, and 2 be piston, and 3 be piston cylinder, and 4 be piston seat, and 5 be spring, and 6 be lower cover, and 7 be puncture
Pipe, 8 be outlet, and 9 be import, and 10 be compression bar, and 11 be piston rod, and 12 be piston driving lever, and 13 be sealing ring, and 14 push away for negative pressure
Bar, 15 is restore push rod, and 16 be extension, and 17 be flow channel for liquids, and 18 be threeway, and 19 be strip-shaped hole, and 20 be groove, and 21 be guiding
Slot, 22 be through-hole, and 23 be guide post, and 24 be protrusion, and 25 be gap.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
The utility model includes piston cylinder 3, piston 2, drive connection part and resetting apparatus, is wherein equipped in piston cylinder 3
Piston 2, the accommodating space of the piston 2 are connected in vein blood vessel between inlying catheter and liquid source capsule road, piston 2 and drive connection
Part is connected, and resetting apparatus is equipped between the drive connection part and piston cylinder 3.Piston 2 is by pressing drive connection part in piston
It is moved in cylinder 3, forms negative pressure between inlying catheter in vein blood vessel and liquid source capsule road, the formation of the negative pressure is driven in pressing
During connector band piston 2 is mobile by original state, between inlying catheter in vein blood vessel and liquid source capsule road
Spatial volume in the piston cylinder 3 of connection increases, and then forms negative pressure between inlying catheter in vein blood vessel and liquid source capsule road
's.By whether having blood backflow at the detection of negative pressure inlying catheter of formation, the piston 2 after detection is after unclamping drive connection part
It is resetted by the active force of resetting apparatus.
Piston cylinder 3 is equipped with the interface with inlying catheter in vein blood vessel and liquid source pipeline connection respectively, two interface phases
Intercommunicated, two interfaces are arranged on piston cylinder 3 or in which an interface is arranged on piston cylinder 3, and another end interface is by inserting
Enter the puncture pipe 7 passed through in piston cylinder 3 and by piston 2 to be formed.Lower cover 6 is detachably connected on piston cylinder 3.
The section of piston 2 is " U "-shaped, and the inward flange of the " u "-shaped open end extends internally, and formation is connect with drive connection part
Extension 16.Piston 2 is that sealing is slidably connected with 3 inner wall of piston cylinder.
Embodiment one
As shown in Figure 1A, Figure 1B, the drive connection part of the present embodiment includes negative pressure button 1 and piston seat 4, the piston seat 4
Middle part be located in piston cylinder 3, circumferentially offer annular groove, 16 grafting of extension on piston 2 in a ring groove, makes piston
The middle part of seat 4 is connected with piston 2.It is worn respectively by the strip-shaped hole 19 that 3 opposite sides of piston cylinder opens up the opposite two sides of piston seat 4
Out, and it is connected to negative pressure button 1；The negative pressure button 1 has a top plate, and top plate two sides are to connect with 4 two sides of piston seat
Side plate.Divide between the top plate and piston cylinder 3 of negative pressure button 1 and between piston seat 4 and the bottom (i.e. lower cover 6) of piston cylinder 3
Not there are the space pushed for negative pressure button 1 and piston seat 4 is mobile with piston 2, resetting apparatus is located at negative pressure button 1 and piston
In space in space between cylinder 3 or between piston seat 4 and the bottom of piston cylinder 3, one end of the resetting apparatus and work
Plug cylinder 3 abuts, and the other end is connected on negative pressure button 1 or is connected to piston seat 4.The resetting apparatus of the present embodiment is spring 5, should
For spring 5 in the space between piston seat 4 and lower cover 6, both ends are connected to piston seat 4 and lower cover 6 respectively；In piston seat 4
The lower surface in portion and the upper surface of lower cover 6, open up fluted 20 respectively, the upper and lower ends of spring 5 be respectively contained in piston seat 4 and
In groove 20 on lower cover 6.
The piston cylinder 3 of the present embodiment is equipped with an interface, that is, exports 8, another interface is formed by puncture pipe 7；The thorn
Poling 7 is penetrated by lower cover 6, and keeps relative position constant with lower cover 6, piston seat 4 and piston 2 is sequentially passed through, in piston cylinder 3
The flow channel for liquids 17 opened up is connected；It is the relatively-movable connection of sealing between piston 2 and puncture pipe 7.It pierces through pipe 7 and is located at work
One end outside plug cylinder 3 can be considered another interface on piston cylinder 3, be connected with liquid source capsule road；It pierces through pipe 7 and is located at piston cylinder
The other end inside 3 is connected by flow channel for liquids 17 with outlet 8, and outlet 8 is connected with inlying catheter in vein blood vessel.Piston cylinder
The interface being arranged on 3 can be attached by way of 6% Rule cone joint with pipeline, can also by bonding, welding, insert
Forms and the piping connection such as connect.The liquid flowed through in the liquid source capsule road of the utility model can be medical fluid, washing pipe liquid or tube-sealing solution.
Inlying catheter connects for a long time in the self-resetting devices and vein blood vessel of the utility model, and pipeline is checked before infusion
Or occur checking whether pipeline is unobstructed when medical fluid flow velocity is slow in infusion process.Puncture pipe 7 when detection, as an interface
Liquid flowing does not occur inside.Finger presses negative pressure button 1, is moved down by piston seat 4 with piston 2, makes 2 top of piston
Airtight cavity volume increases, and forms local decompression, realizes intravascular a small amount of blood backflow to inlying catheter, to check inlying catheter
It is whether unobstructed.After detection, negative pressure button 1 is unclamped, piston 2 and piston seat 4 reset under the action of spring 5, make in piston cylinder 3
Airtight cavity restores to original state, and a small amount of blood for oppressing pumpback to inlying catheter is back in blood vessel, completes whether pipeline leads to
Smooth inspection operation, starts infusion of being infused or restore.When infusion, liquid by puncture pipe 7 one end flow into, through flow channel for liquids 17,
Outlet 8 flows to inlying catheter in vein blood vessel.According to circumstances, it can repeatedly press, reach observing effect.When needing to inlying catheter
When carrying out tube sealing, the puncture pipe 7 as an interface is connected with sealing liquid pipeline, and tube-sealing solution is flowed by one end of puncture pipe 7, warp
Flow channel for liquids 17, outlet 8 flow to inlying catheter in vein blood vessel, carry out tube sealing to inlying catheter.
Embodiment two
As shown in Fig. 2A, Fig. 2 B, the difference between this embodiment and the first embodiment lies in: it is arranged on the piston cylinder 3 of the present embodiment
Two interfaces, respectively import 9 and outlet 8, two interfaces are connected by flow channel for liquids 17；Import 9 and liquid source capsule road phase
Connection, outlet 8 are connected with inlying catheter in vein blood vessel；The present embodiment, which eliminates, pierces through pipe 7.Remaining is complete with embodiment one
It is exactly the same.
When detection, liquid flowing does not occur for import 9.Finger presses negative pressure button 1, downward with piston 2 by piston seat 4
It is mobile, increase the airtight cavity volume of 2 top of piston, form local decompression, realizes intravascular a small amount of blood backflow to indwelling
Conduit, to check whether inlying catheter is unobstructed.After detection, negative pressure button 1, piston 2 and piston seat 4 are unclamped in the effect of spring 5
Lower reset restores the airtight cavity in piston cylinder 3 to original state, and a small amount of blood for oppressing pumpback to inlying catheter is back to blood
Guan Zhong completes the whether unobstructed inspection operation of pipeline, starts infusion of being infused or restore.When infusion, liquid is flowed by one end of import 9
Enter, flows to inlying catheter in vein blood vessel through flow channel for liquids 17, outlet 8.According to circumstances, it can repeatedly press, reach observing effect.
When needing to carry out tube sealing to inlying catheter, import 9 is connected with sealing liquid pipeline, and tube-sealing solution is flowed by import 9, through flow channel for liquids
17, outlet 8 flows to inlying catheter in vein blood vessel, carries out tube sealing to inlying catheter.
Embodiment three
It is connect as shown in figure 3, being provided with two on the piston cylinder 3 of the present embodiment, respectively import 9 and outlet 8, two connect
Mouth is connected by flow channel for liquids 17；Import 9 is connected with liquid source capsule road, and outlet 8 is connected with inlying catheter in vein blood vessel.
The drive connection part of the present embodiment includes compression bar 10 and piston rod 11, and one end of the piston rod 11 is inserted into piston cylinder 3, edge
Annular groove circumferentially is offered, 16 grafting of extension on piston 2 in a ring groove, makes one end of piston rod 11 and 2 phase of piston
Even；The other end of piston rod 11 is located at outside piston cylinder 3.Compression bar 10 is articulated on piston cylinder 3, one end and piston rod 11
The other end is hinged, and the other end of the compression bar 10 is free end.There are connect for piston between one end and piston cylinder 3 of piston rod 11
The space mobile with piston 2 of bar 11, the resetting apparatus of the present embodiment is spring 5, and spring 5 is located in this space, both ends difference
It is connected to one end of piston cylinder 3 and piston rod 11.
When detection, liquid flowing does not occur for import 9.Finger presses moulded rod 10, upward with piston 2 by piston rod 11
It is mobile, increase the airtight cavity volume of 2 lower section of piston, form local decompression, realizes intravascular a small amount of blood backflow to indwelling
Conduit, to check whether inlying catheter is unobstructed.After detection, compression bar 10, piston 2 and piston rod 11 are unclamped in the effect of spring 5
Lower reset restores the airtight cavity in piston cylinder 3 to original state, and a small amount of blood for oppressing pumpback to inlying catheter is back to blood
Guan Zhong completes the whether unobstructed inspection operation of pipeline, starts infusion of being infused or restore.When infusion, liquid is flowed by one end of import 9
Enter, flows to inlying catheter in vein blood vessel through flow channel for liquids 17, outlet 8.According to circumstances, it can repeatedly press, reach observing effect.
When needing to carry out tube sealing to inlying catheter, import 9 is connected with sealing liquid pipeline, and tube-sealing solution is flowed by import 9, through flow channel for liquids
17, outlet 8 flows to inlying catheter in vein blood vessel, carries out tube sealing to inlying catheter.
Example IV
As shown in Fig. 4 A, Fig. 4 B, the difference between this embodiment and the first embodiment lies in: the spring 5 of the present embodiment is located at negative pressure
In space between 3 outer surface of top plate and piston cylinder of button 1, both ends are connected to the top plate and piston cylinder 3 of negative pressure button 1 respectively
Outer surface.Remaining is identical with embodiment one.
Embodiment five
As shown in Fig. 5 A, Fig. 5 B, the difference between the present embodiment and the second embodiment lies in that: the spring 5 of the present embodiment is located at negative pressure
In space between 3 outer surface of top plate and piston cylinder of button 1, both ends are connected to the top plate and piston cylinder 3 of negative pressure button 1 respectively
Outer surface.Remaining is identical with embodiment two.
Embodiment six
As shown in Fig. 6 A, Fig. 6 B, the difference between this embodiment and the first embodiment lies in: it is arranged on the piston cylinder 3 of the present embodiment
One interface exports 8, which is connected with threeway 18, and an interface of threeway 18 passes through the outlet 8 opened up on piston cylinder 3
With accommodating piston 2 space be connected, other two interface of threeway 18 respectively with inlying catheter in vein blood vessel and liquid source capsule
Road is connected.The present embodiment, which eliminates, pierces through pipe 7.Remaining is identical with embodiment one.
When detection, liquid flowing does not occur in threeway 18 with an interface of liquid source pipeline connection.Finger presses moulded rod 10,
It is moved down by piston seat 4 with piston 2, increases the airtight cavity volume of 2 top of piston, form local decompression, realize
Intravascular a small amount of blood backflow is to inlying catheter, to check whether inlying catheter is unobstructed.After detection, negative pressure button 1, piston are unclamped
2 and piston seat 4 resetted under the action of spring 5, restore the airtight cavity in piston cylinder 3 to original state, oppress pumpback extremely
A small amount of blood of inlying catheter is back in blood vessel, is completed the whether unobstructed inspection operation of pipeline, is started infusion of being infused or restore.It is defeated
When liquid, liquid flows to inlying catheter in vein blood vessel through threeway 18, is no longer flow through the inside of piston cylinder 3.It according to circumstances, can be multiple
Pressing, reaches observing effect.When needing to carry out tube sealing to inlying catheter, an interface in threeway 18 is connected with sealing liquid pipeline
Logical, tube-sealing solution is flowed by the interface of threeway 18, is flowed in vein blood vessel through second interface in flow channel for liquids 17, threeway 18
Inlying catheter carries out tube sealing to inlying catheter.
Embodiment seven
As shown in Figure 7 A, 7 B, the difference between this embodiment and the first embodiment lies in: the drive connection part of the present embodiment be live
Driving lever 12 is filled in, one end of the piston driving lever 12 is located in piston cylinder 3, circumferentially offers annular groove, the extension 16 on piston 2
Grafting in a ring groove, makes one end of piston driving lever 12 be connected with piston 2；The other end of piston driving lever 12 on piston cylinder 3 by opening
If strip-shaped hole 19 be pierced by.Between the lower cover 6 of 3 bottom of piston driving lever 12 and piston cylinder there are for piston driving lever 12 with piston 2
Mobile space, spring 5 are located in this space, and both ends are connected to one end of lower cover 6 and piston driving lever 12 respectively.Remaining with reality
It is identical to apply example one.
Embodiment eight
As shown in Fig. 8 A, Fig. 8 B, the drive connection part of the present embodiment includes negative pressure button 1 and negative pressure push rod 14, the negative pressure
The axial cross section of push rod 14 is in inverted "T"-shaped, and "T"-shaped horizontal edge is located in piston cylinder 3, and the extension 16 on piston 2 is stuck in " T "
The top of shape horizontal edge makes negative pressure push rod 14 be connected with piston 2.The other end (i.e. " T " shaped vertical edge) of negative pressure push rod 14, which is located at, lives
The outside of plug cylinder 3, and be connected with negative pressure button 1.The negative pressure button 1 of the present embodiment has a top plate, sets in the lower surface of top plate
There are multiple guide posts 23；The top of piston cylinder 3 offers quantity guide groove 21 identical with guide post 23, and each guide post 23 is
It is plugged in a guide groove 21.There are the space pushed for negative pressure button 1 between negative pressure button 1 and piston cylinder 3,5, spring
In space between negative pressure button 1 and piston cylinder 3, both ends are connected to negative pressure button 1 and piston cylinder 3 respectively.Negative pressure push rod 14
It is equipped with sealing ring 13, guarantees to realize sealing between negative pressure push rod 14 and 3 internal cavity of piston cylinder.
Two interfaces, respectively import 9 and outlet 8 are provided on the piston cylinder 3 of the present embodiment, two interfaces pass through liquid
Runner 17 is connected；Import 9 is connected with liquid source capsule road, and outlet 8 is connected with inlying catheter in vein blood vessel.Flow channel for liquids 17
It is downwardly extending protrusion 24 positioned at the top position of piston 2, which is in inverted pyramidal, the inner wall with piston cylinder 3
Between there are the gaps 25 for liquid communication.One end of negative pressure push rod 14 is abutted with protrusion 24, is pushed away by 24 pairs of negative pressure of the protrusion
Bar 14 is limited.
When detection, liquid flowing does not occur for import 9.Finger presses negative pressure button 1, by negative pressure push rod 14 with piston 2
It moves down, increases the airtight cavity volume of 2 top of piston, form local decompression, realize intravascular a small amount of blood backflow extremely
Inlying catheter, to check whether inlying catheter is unobstructed.After detection, negative pressure button 1 is unclamped, piston 2 and negative pressure push rod 14 are in spring 5
Under the action of reset, restore the airtight cavity in piston cylinder 3 to original state, oppress a small amount of blood of pumpback to inlying catheter
It is back in blood vessel, completes the whether unobstructed inspection operation of pipeline, start infusion of being infused or restore.When infusion, liquid is by import 9
One end flows into, and flows to inlying catheter in vein blood vessel through flow channel for liquids 17, outlet 8.According to circumstances, it can repeatedly press, reach sight
Examine effect.When needing to carry out tube sealing to inlying catheter, import 9 is connected with sealing liquid pipeline, and tube-sealing solution is flowed by import 9, warp
Flow channel for liquids 17, outlet 8 flow to inlying catheter in vein blood vessel, carry out tube sealing to inlying catheter.
Embodiment nine
As shown in Fig. 9 A, Fig. 9 B, the present embodiment and the difference of embodiment eight are: the present embodiment is in negative pressure push rod 14 and lives
It being equipped in space between the bottom (i.e. lower cover 6) of plug cylinder 3 and restores push rod 15, one end of the recovery push rod 15 is abutted with piston 2,
The other end is inserted in the through-hole 22 that 3 bottom of piston cylinder opens up.Spring 5, which is set in, to be restored on push rod 15, and both ends are connected to respectively
Restore the bottom of push rod 15 and piston cylinder 3.
When detection, liquid flowing does not occur for import 9.Finger presses negative pressure button 1, by negative pressure push rod 14 with piston 2
It moves down, increases the airtight cavity volume of 2 top of piston, form local decompression, realize intravascular a small amount of blood backflow extremely
Inlying catheter, to check whether inlying catheter is unobstructed.When negative pressure push rod 14 is moved down with piston 2, restore under push rod 15
End is moved in through-hole 22, further functions as guiding role.After detection, negative pressure button 1, piston 2, negative pressure push rod 14 and extensive are unclamped
Multiple push rod 15 resets under the action of spring 5, restores the airtight cavity in piston cylinder 3 to original state, oppresses pumpback to staying
The a small amount of blood for setting conduit is back in blood vessel, is completed the whether unobstructed inspection operation of pipeline, is started infusion of being infused or restore.Infusion
When, liquid is flowed by one end of import 9, flows to inlying catheter in vein blood vessel through flow channel for liquids 17, outlet 8.According to circumstances, may be used
Repeatedly pressing, reaches observing effect.When needing to carry out tube sealing to inlying catheter, import 9 is connected with sealing liquid pipeline, tube-sealing solution
It is flowed by import 9, flows to inlying catheter in vein blood vessel through flow channel for liquids 17, outlet 8, tube sealing is carried out to inlying catheter.
The operation of the inspection inlying catheter access of the utility model is that these three steps are unclamped in pressing-inspection-, is subtracted significantly
Operating procedure is lacked.
Claims (10)
1. one kind draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: including piston cylinder (3), piston (2), drive
Follower link and resetting apparatus are wherein equipped with piston (2) in piston cylinder (3), and the accommodating space of the piston (2) is connected to vein
In blood vessel between inlying catheter and liquid source capsule road, the piston (2) is connected with drive connection part, in the drive connection part and piston
Resetting apparatus is equipped between cylinder (3)；The piston (2) is moved in piston cylinder (3) by pressing drive connection part, in venous blood
Negative pressure is formed between inlying catheter and liquid source capsule road in pipe, by whether there is blood to return at the detection of negative pressure inlying catheter of formation
Stream；The piston (2) after detection is resetted after unclamping drive connection part by the active force of the resetting apparatus.
2. blood method according to claim 1 of drawing back examines pipeline access self-resetting devices, it is characterised in that: press the drive
During follower link band piston (2) is mobile by original state, with inlying catheter in vein blood vessel and liquid source capsule road
Between spatial volume in the piston cylinder (3) that is connected to increase, and then in vein blood vessel inlying catheter and liquid source capsule road it
Between form negative pressure.
3. blood method according to claim 1 of drawing back examines pipeline access self-resetting devices, it is characterised in that: the piston cylinder
(3) it is equipped with the interface with inlying catheter in vein blood vessel and liquid source pipeline connection respectively, which is interconnected, two institutes
State that interface is arranged on the piston cylinder (3) or in which interface is arranged on piston cylinder (3), another end interface is by inserting
Enter the puncture pipe (7) passed through in the piston cylinder (3) and by piston (2) to be formed.
4. blood method according to claim 1 of drawing back examines pipeline access self-resetting devices, it is characterised in that: the driving connects
Fitting includes negative pressure button (1) and piston seat (4), the middle part of the piston seat (4) be located in the piston cylinder (3) and with it is described
Piston (2) is connected, and the opposite two sides of the piston seat (4) are worn by the strip-shaped hole (19) that piston cylinder (3) opposite sides opens up respectively
Out, it is connected to the negative pressure button (1)；Between the negative pressure button (1) and piston cylinder (3) and piston seat (4) and living
The space mobile with piston (2) for negative pressure button (1) pushing and piston seat (4), institute are respectively kept between the bottom of plug cylinder (3)
It states in the space that resetting apparatus is located between negative pressure button (1) and piston cylinder (3) or is located at piston seat (4) and piston cylinder (3)
In space between bottom, one end of the resetting apparatus is abutted with piston cylinder (3), the other end be connected on negative pressure button (1) or
It is connected to piston seat (4).
5. blood method according to claim 3 of drawing back examines pipeline access self-resetting devices, it is characterised in that: the piston cylinder
(3) threeway (18) are connected on, an interface of the threeway (18) is lived by the interface opened up on the piston cylinder (3) and accommodating
Plug (2) space be connected, other two interface of the threeway (18) respectively with inlying catheter in vein blood vessel and liquid source capsule
Road is connected.
6. blood method according to claim 1 of drawing back examines pipeline access self-resetting devices, it is characterised in that: the driving connects
Fitting includes compression bar (10) and piston rod (11), one end of the piston rod (11) be inserted into the piston cylinder (3) and with institute
It states piston (2) to be connected, it is external that the other end is located at piston cylinder (3)；The compression bar (10) is articulated on piston cylinder (3), one end and institute
The other end for stating piston rod (11) is hinged, and the other end of the compression bar (10) is free end；One end of the piston rod (11)
There are the space mobile with piston (2) for piston rod (11) between piston cylinder (3), the resetting apparatus is located at the space
In, the both ends of the resetting apparatus are connected to one end of piston cylinder (3) and piston rod (11) respectively.
7. blood method according to claim 1 of drawing back examines pipeline access self-resetting devices, it is characterised in that: the driving connects
Fitting is piston driving lever (12), and one end of the piston driving lever (12) is located in the piston cylinder (3) and is connected with piston (2), institute
The other end for stating piston driving lever (12) is pierced by by the strip-shaped hole (19) opened up on piston cylinder (3)；The piston driving lever (12) and work
There are the space mobile with piston (2) for piston driving lever (12) between plug cylinder (3), the resetting apparatus is located in this space,
The both ends of the resetting apparatus are connected to one end of piston cylinder (3) and piston driving lever (12) respectively.
8. blood method according to claim 1 of drawing back examines pipeline access self-resetting devices, it is characterised in that: the driving connects
Fitting includes negative pressure button (1) and negative pressure push rod (14), and one end of the negative pressure push rod (14) is located in the piston cylinder (3), simultaneously
Be connected with piston (2), the other end of the negative pressure push rod (14) be located at the outside of piston cylinder (3) and with the negative pressure button (1)
It is connected；It is equipped with the protrusion (24) limited to negative pressure push rod (14) inside the piston cylinder (3), the one of the negative pressure push rod (14)
End is abutted with the protrusion (24)；Between the negative pressure button (1) and piston cylinder (3) and one end and the piston of negative pressure push rod (14)
The space mobile with piston (2) for negative pressure button (1) pushing and negative pressure push rod (14) is respectively kept between the bottom of cylinder (3),
The resetting apparatus is located in the space between negative pressure button (1) and piston cylinder (3) or is located at negative pressure push rod (14) and piston cylinder
(3) in the space between bottom, one end of the resetting apparatus is abutted with piston cylinder (3), and the other end is connected to negative pressure button (1)
Above or it is connected to piston (2).
9. blood method according to claim 8 of drawing back examines pipeline access self-resetting devices, it is characterised in that: the negative pressure pushes away
It is equipped in space between bar (14) and the bottom of piston cylinder (3) and restores push rod (15), one end of the recovery push rod (15) and institute
Piston (2) abutting is stated, the other end is inserted in the through-hole (22) that the piston cylinder (3) bottom opens up, and the resetting apparatus is arranged
On the recovery push rod (15), both ends are connected to the bottom for restoring push rod (15) and piston cylinder (3) respectively.
10. blood method according to claim 1 of drawing back examines pipeline access self-resetting devices, it is characterised in that: the piston
(2) section is " U "-shaped, and the inward flange of the " u "-shaped open end extends internally, and forms the extension connecting with the drive connection part
Portion (16)；The piston (2) is that sealing is slidably connected with piston cylinder (3) inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721922089.2U CN208541635U (en) | 2017-12-30 | 2017-12-30 | It draws back blood method and examines pipeline access self-resetting devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721922089.2U CN208541635U (en) | 2017-12-30 | 2017-12-30 | It draws back blood method and examines pipeline access self-resetting devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208541635U true CN208541635U (en) | 2019-02-26 |
Family
ID=65417056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721922089.2U Active CN208541635U (en) | 2017-12-30 | 2017-12-30 | It draws back blood method and examines pipeline access self-resetting devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208541635U (en) |
-
2017
- 2017-12-30 CN CN201721922089.2U patent/CN208541635U/en active Active
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Effective date of registration: 20200710 Address after: No.14, building 32, Jiefang East Road, Linghe District, Jinzhou City, Liaoning Province Patentee after: Yang Hui Address before: The big 121200 Jinzhou city of Liaoning Province Jin Cun Dalinghe Linghai City Subdistrict Office 102, Daling Industrial Park on the north side of the line Patentee before: JINZHOU NUODE MEDICAL INSTRUMENT TECHNOLOGY Co.,Ltd. |