CN109985294A - A kind of diaphragm type draws back blood method and examines pipeline access self-resetting devices - Google Patents
A kind of diaphragm type draws back blood method and examines pipeline access self-resetting devices Download PDFInfo
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- CN109985294A CN109985294A CN201711489183.8A CN201711489183A CN109985294A CN 109985294 A CN109985294 A CN 109985294A CN 201711489183 A CN201711489183 A CN 201711489183A CN 109985294 A CN109985294 A CN 109985294A
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- negative pressure
- piston cylinder
- elastic membrane
- inlying catheter
- push rod
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- 239000008280 blood Substances 0.000 title claims abstract description 37
- 210000004369 blood Anatomy 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 239000012528 membrane Substances 0.000 claims abstract description 56
- 210000003462 vein Anatomy 0.000 claims abstract description 39
- 239000002775 capsule Substances 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 26
- 238000011084 recovery Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 230000000474 nursing effect Effects 0.000 abstract description 3
- 230000008676 import Effects 0.000 description 16
- 238000001802 infusion Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 238000007689 inspection Methods 0.000 description 6
- 210000004204 blood vessel Anatomy 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 210000001367 artery Anatomy 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- 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
-
- 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
- A61M2005/1401—Functional 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/70—General characteristics of the apparatus with testing or calibration facilities
Landscapes
- 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 present invention relates to the channel testers of inlying catheter, specifically a kind of diaphragm type draws back blood method and examines pipeline access self-resetting devices, elastic membrane is sealedly connected in piston cylinder, cavity in piston cylinder is divided into two parts space by elastic membrane, a portion space is connected in vein blood vessel between inlying catheter and liquid source capsule road, and another part space provides deformation space for elastic membrane；Elastic membrane is abutted with drive connection part, and elastic membrane forms negative pressure between inlying catheter in vein blood vessel and liquid source capsule road, whether have blood backflow at the detection of negative pressure inlying catheter by formation by pressing drive connection part flexible deformation in piston cylinder；Elastic membrane after detection restPoses after unclamping drive connection part.The present invention 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 present invention relates to the channel tester of inlying catheter, specifically a kind of diaphragm type draws back blood method and examines pipeline
Access 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.
Summary of the invention
In order to solve the above problem existing for manual operation detection path, the purpose of the present invention is to provide a kind of diaphragm types
It draws back blood method and examines pipeline access self-resetting devices.The inspection pipeline access self-resetting devices are connect for a long time with inlying catheter,
For checking whether inlying catheter is unobstructed before being infused, while blood operation is drawn back in simplification, manually-operated individual difference is reduced
Different problem significantly improves the efficiency and quality of inlying catheter nursing operation before being infused.
The purpose of the present invention is achieved through the following technical solutions:
The present invention includes piston cylinder, elastic membrane and drive connection part, is wherein sealedly connected with elastic membrane in piston cylinder, the work
Cavity in plug cylinder is divided into two parts space by elastic membrane, and a portion space is connected to inlying catheter and liquid in vein blood vessel
Between source capsule road, another part space provides deformation space for elastic membrane；The elastic membrane is abutted with drive connection part, the elasticity
Film is formed between inlying catheter in vein blood vessel and liquid source capsule road by pressing drive connection part flexible deformation in piston cylinder
Negative pressure, by whether having blood backflow at the detection of negative pressure inlying catheter of formation；The elastic membrane after detection is unclamping driving
It restPoses after connector；
Wherein: it presses the drive connection part and drives elastic membrane by original state during flexible deformation, and it is quiet
A part of spatial volume being connected between inlying catheter and liquid source capsule road in arteries and veins blood vessel increases, and then stays in vein blood vessel
It sets and forms negative pressure between conduit and liquid source capsule road；
The both ends for being connected in vein blood vessel a part of space between inlying catheter and liquid source capsule road are respectively to set
Two interfaces on piston cylinder are set, which is connected with inlying catheter in vein blood vessel and liquid source capsule road respectively；
The piston cylinder is equipped with interface, which is connected with threeway, and an interface of the threeway passes through the piston
The interface being arranged on cylinder is connected with a part of space being connected in vein blood vessel between inlying catheter and liquid source capsule road,
Other two interface of the threeway is connected with inlying catheter in vein blood vessel and liquid source capsule road respectively；
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 abut with elastic membrane, 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；
There are the space for negative pressure button pressed downwards between the negative pressure button and piston cylinder, the elastic membrane is driven negative by negative pressure button
It presses push rod to push and flexible deformation occurs；
It is equipped with resetting apparatus between the negative pressure button and piston cylinder, one end of the resetting apparatus is abutted with piston cylinder,
The other end is connected on negative pressure button；
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 elastic membrane abuts, and the other end is inserted in the through-hole that the piston cylinder bottom opens up, is arranged on the recovery push rod
Resetting apparatus, the both ends of the resetting apparatus are connected to the bottom for restoring push rod and piston cylinder respectively；
The protrusion limited to negative pressure push rod is equipped with inside the piston cylinder, one end of the negative pressure push rod is supported with the protrusion
It connects；There are the gaps for liquid communication between the protrusion and the inner wall of piston cylinder；
The negative pressure push rod is equipped with sealing ring, and the negative pressure push rod between sealing ring and piston cylinder internal cavity by realizing
Sealing；
The negative pressure button is equipped with multiple guide posts, and it is identical with guide post that the top of the piston cylinder offers quantity
Guide groove, each guide post are plugged in a guide groove.
Advantages of the present invention and good effect are as follows:
1. the present invention can be connect for a long time with inlying catheter, for checking whether pipeline is unobstructed before being infused, drawn back in simplification
Blood reduces manually-operated individual difference problem while operation, significantly improves the efficiency of inlying catheter nursing operation before being infused
And quality.
2. the configuration of the present invention 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 embodiment of the present invention one；
Figure 1B is the left view cross-sectional view of Figure 1A；
Fig. 2A is the front sectional view of the embodiment of the present invention two；
Fig. 2 B is the side view cutaway drawing of Fig. 2A；
Fig. 3 A is the front sectional view of the embodiment of the present invention three；
Fig. 3 B is the side view cutaway drawing of Fig. 3 A；
Fig. 4 A is the front sectional view of the embodiment of the present invention four；
Fig. 4 B is the left view cross-sectional view of Fig. 4 A；
Wherein: 1, which is negative, presses button, and 2 be elastic membrane, and 3 be piston cylinder, and 4 be negative pressure push rod, and 5 be spring, and 6 be lower cover, and 7 are
Sealing ring, 8 for outlet, 9 be import, and 10 be protrusion, and 11 is restore push rod, and 12 be gap, and 13 be through-hole, and 14 be guide post, 15
It is threeway for guide groove, 16,17 be flow channel for liquids.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
The present invention includes piston cylinder 3, elastic membrane 2 and drive connection part, is wherein sealedly connected with elastic membrane 2 in piston cylinder 3,
Cavity in the piston cylinder 3 is divided by elastic membrane 2 for two parts space, and a portion space is connected to indwelling in vein blood vessel and leads
Between pipe and liquid source capsule road, another part space is that elastic membrane 2 provides deformation space.Elastic membrane 2 is abutted with drive connection part, should
Elastic membrane 2 by pressing drive connection part flexible deformation in piston cylinder 3, in vein blood vessel inlying catheter and liquid source capsule road it
Between form negative pressure, the formation of the negative pressure be pressing drive connection part drive the flexible deformation by original state of elastic membrane 2
In the process, a part of spatial volume being connected between inlying catheter in vein blood vessel and liquid source capsule road increases, and then in vein
Negative pressure is formed in blood vessel between inlying catheter and liquid source capsule road.By whether having blood at the detection of negative pressure inlying catheter of formation
Reflux, the elastic membrane 2 after detection restPose after unclamping drive connection part.
The both ends for being connected to a part of space in vein blood vessel between inlying catheter and liquid source capsule road are respectively to be arranged
Two interfaces on piston cylinder 3, two interfaces are connected with inlying catheter in vein blood vessel and liquid source capsule road respectively.Alternatively,
Piston cylinder 3 is equipped with interface, which is connected with threeway 16, and an interface of threeway 16 passes through the interface being arranged on piston cylinder 3
It is connected with a part of space for being connected in vein blood vessel between inlying catheter and liquid source capsule road, other two of threeway 16 connects
Mouth is connected with inlying catheter in vein blood vessel and liquid source capsule road respectively.Lower cover 6 is detachably connected on piston cylinder 3, elasticity
Film 2 is sealedly attached between the lower cover 6 and piston cylinder 3.
Embodiment one
As shown in Figure 1A, Figure 1B, the drive connection part of the present embodiment includes negative pressure button 1 and negative pressure push rod 4, which pushes away
In inverted "T"-shaped, "T"-shaped horizontal edge is located in piston cylinder 3 axial cross section of bar 4, is connected to the upper surface of elastic membrane 2.Negative pressure
The other end (i.e. " T " shaped vertical edge) of push rod 4 is located at the outside of piston cylinder 3, and is connected with negative pressure button 1.The present embodiment is born
Button 1 is pressed with a top plate, is equipped with multiple guide posts 14 in the lower surface of top plate；The top of piston cylinder 3 offers quantity and leads
To the identical guide groove 15 of column 14, each guide post 14 is plugged in a guide groove 15.Negative pressure button 1 and piston cylinder 3 it
Between there are the spaces pushed for negative pressure button 1.Negative pressure push rod 4 is equipped with sealing ring 13, guarantees in negative pressure push rod 14 and piston cylinder 3
Sealing is realized between portion's cavity.
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, and the import 9, outlet 8 and flow channel for liquids 17, which constitute, is connected to inlying catheter and liquid source in vein blood vessel
A part of space between pipeline；Import 9 is connected with liquid source capsule road, and outlet 8 is connected with inlying catheter in vein blood vessel.Liquid
The top position that body runner 17 is located at elastic membrane 2 be downwardly extending protrusion 10, the protrusion 10 be in it is inverted pyramidal, with piston
There are the gaps 12 for liquid communication between the inner wall of cylinder 3.One end of negative pressure push rod 4 is abutted with protrusion 10, passes through the protrusion 10
Negative pressure push rod 4 is limited.The liquid flowed through in liquid source capsule road of the invention can be medical fluid, washing pipe liquid or tube-sealing solution.
In self-resetting devices and vein blood vessel of the invention inlying catheter for a long time connect, before infusion check pipeline or
Occur checking whether pipeline is unobstructed when medical fluid flow velocity is slow in infusion process.When detection, liquid flowing does not occur for import 9.Finger
Negative pressure button 1 is pressed, elastic membrane 2 is pushed by negative pressure push rod 4, makes the downward flexible deformation of elastic membrane 2, and then make in elastic membrane 2
The airtight cavity volume of side increases, and forms local decompression, realizes intravascular a small amount of blood backflow to inlying catheter, to check indwelling
Whether conduit is unobstructed.After detection, unclamp negative pressure button 1, elastic membrane 2 automatically resets, make the airtight cavity in piston cylinder 3 restore to
A small amount of blood of original state, compressing pumpback to inlying catheter is back in blood vessel, is completed the whether unobstructed inspection operation of pipeline, is opened
Begin to be infused or restores to be infused.When infusion, liquid is flowed by one end of import 9, flows to vein blood vessel through flow channel for liquids 17, outlet 8
Middle inlying catheter.According to circumstances, it can repeatedly press, reach observing effect.When needing to carry out tube sealing to inlying catheter, import 9
It is connected with sealing liquid pipeline, tube-sealing solution is flowed by import 9, inlying catheter in vein blood vessel is flowed to through flow channel for liquids 17, outlet 8,
Tube sealing is carried out to inlying catheter.
Embodiment two
As shown in Fig. 2A, Fig. 2 B, the difference between this embodiment and the first embodiment lies in: the present embodiment is on the top of negative pressure button 1
Plate and piston cylinder are equipped with resetting apparatus between 3 outer surface, which is spring 5, one end and the piston cylinder 3 of elasticity 5
Outer surface abuts, and the other end is connected to the top plate lower surface of negative pressure button 1.Remaining is identical with embodiment one.
When detection, liquid flowing does not occur for import 9.Finger presses negative pressure button 1, need to overcome the elastic force of spring 5, make negative pressure
Push rod 4 pushes, and pushes elastic membrane 2 by negative pressure push rod 4, makes the downward flexible deformation of elastic membrane 2, and then makes 2 top of elastic membrane
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, negative pressure push rod 4 resets under the collective effect of spring 5 and elastic membrane 2, elasticity
Film 2 also automatically resets, and restores the airtight cavity in piston cylinder 3 to original state, oppresses a small amount of blood of pumpback to inlying catheter
Liquid is back in blood vessel, is completed the whether unobstructed inspection operation of pipeline, is started infusion of being infused or restore.When infusion, liquid is by import 9
One end flow into, 8 flow to inlying catheter in vein blood vessel through flow channel for liquids 17, outlet.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,
Inlying catheter in vein blood vessel is flowed to through flow channel for liquids 17, outlet 8, tube sealing is carried out to inlying catheter.
Embodiment three
As shown in Fig. 3 A, Fig. 3 B, the difference between the present embodiment and the second embodiment lies in that: the present embodiment is in negative pressure push rod 4 and lives
It is equipped in space between the bottom (i.e. lower cover 6) of plug cylinder 3 and restores push rod 11, one end and the elastic membrane 2 of the recovery push rod 11 are supported
It connects, the other end is inserted in the through-hole 13 that 3 bottom of piston cylinder opens up.Spring 5, which is set in, to be restored on push rod 11, and both ends abut respectively
In the bottom for restoring push rod 11 and piston cylinder 3.Remaining is identical with embodiment two.
When detection, liquid flowing does not occur for import 9.Finger presses negative pressure button 1, pushes elastic membrane by negative pressure push rod 4
2, make the downward flexible deformation of elastic membrane 2, and then increase the airtight cavity volume of 2 top of elastic membrane, forms local decompression, realize
Intravascular a small amount of blood backflow is to inlying catheter, to check whether inlying catheter is unobstructed.Flexible deformation occurs downwards for elastic membrane 2
Meanwhile the lower end for restoring push rod 11 is moved in through-hole 13, further functions as guiding role.After detection, negative pressure button 1 is unclamped,
The elastic force of spring 5 makes to restore the elastic membrane 2 that push rod 11 pushes up deformation, so that elastic membrane 2 is automatically reset, makes 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.Elastic membrane 2 is also pushed away pushing up negative pressure during reset
Bar 4 resets.When infusion, liquid is flowed by one end of import 9, is flowed to indwelling in vein blood vessel through flow channel for liquids 17, outlet 8 and is led
Pipe.According to circumstances, it can repeatedly press, reach observing effect.When needing to carry out tube sealing to inlying catheter, import 9 and dip tube
Road is connected, and tube-sealing solution is flowed by import 9, flows to inlying catheter in vein blood vessel through flow channel for liquids 17, outlet 8, leads to indwelling
Pipe carries out tube sealing.
Example IV
As shown in Fig. 4 A, Fig. 4, the difference between this embodiment and the first embodiment lies in: it is arranged one on the piston cylinder 3 of the present embodiment
A interface exports 8, which is connected with threeway 16, an interface of threeway 16 by the outlet 8 that is opened up on piston cylinder 3 with
It is connected to a part of space in vein blood vessel between inlying catheter and liquid source capsule road to be connected, other two interface of threeway 16
It is connected respectively with inlying catheter in vein blood vessel and liquid source capsule road.Remaining is identical with embodiment one.
When detection, liquid flowing does not occur in threeway 16 with an interface of liquid source pipeline connection.Finger pressing negative pressure is pressed
Button 1 pushes elastic membrane 2 by negative pressure push rod 4, makes the downward flexible deformation of elastic membrane 2, and then makes the closed chamber of 2 top of elastic membrane
Body volume increases, and forms local decompression, realizes intravascular a small amount of blood backflow to inlying catheter, to check whether inlying catheter leads to
Freely.After detection, unclamp negative pressure button 1, negative pressure push rod 4 resets under the collective effect of spring 5 and elastic membrane 2, elastic membrane 2 also from
It is dynamic to reset, restore the airtight cavity in piston cylinder 3 to original state, 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 flows to quiet through threeway 16
Inlying catheter in arteries and veins blood vessel is no longer flow through the inside of piston cylinder 3.According to circumstances, it can repeatedly press, reach observing effect.When need
When carrying out tube sealing to inlying catheter, an interface in threeway 16 is connected with sealing liquid pipeline, and tube-sealing solution should by threeway 16
Interface flow into, flow to inlying catheter in vein blood vessel through second interface in flow channel for liquids 17, threeway 16, to inlying catheter into
Row tube sealing.
The operation of inspection inlying catheter access of the invention is that these three steps are unclamped in pressing-inspection-, is greatly reduced
Operating procedure.
Claims (10)
1. a kind of diaphragm type draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: including piston cylinder (3), elasticity
Film (2) and drive connection part are wherein sealedly connected with elastic membrane (2) in piston cylinder (3), and the cavity in the piston cylinder (3) is by bullet
Property film (2) is divided into two parts space, and a portion space is connected in vein blood vessel between inlying catheter and liquid source capsule road, separately
A part of space is that elastic membrane (2) provide deformation space；The elastic membrane (2) abuts with drive connection part, and the elastic membrane (2) is logical
Pressing drive connection part is crossed in piston cylinder (3) interior flexible deformation, is formed between inlying catheter in vein blood vessel and liquid source capsule road
Negative pressure, by whether having blood backflow at the detection of negative pressure inlying catheter of formation；The elastic membrane (2) after detection is unclamping drive
It restPoses after follower link.
2. diaphragm type according to claim 1 draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: pressing
The drive connection part drives elastic membrane (2) during flexible deformation, to lead with indwelling in vein blood vessel by original state
A part of spatial volume being connected between pipe and liquid source capsule road increases, and then inlying catheter and liquid source capsule in vein blood vessel
Negative pressure is formed between road.
3. diaphragm type according to claim 1 draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: connection
The both ends in a part of space in vein blood vessel between inlying catheter and liquid source capsule road are respectively to be arranged in piston cylinder (3)
On two interfaces, which is connected with inlying catheter in vein blood vessel and liquid source capsule road respectively.
4. diaphragm type according to claim 1 draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: described
Piston cylinder (3) is equipped with interface, which is connected with threeway (16), and an interface of the threeway (16) passes through the piston cylinder
(3) interface being arranged on is connected with a part of space being connected in vein blood vessel between inlying catheter and liquid source capsule road
Logical, other two interface of the threeway (16) is connected with inlying catheter in vein blood vessel and liquid source capsule road respectively.
5. diaphragm type according to claim 1 draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: described
Drive connection part includes negative pressure button (1) and negative pressure push rod (4), and one end of the negative pressure push rod (4) is located at the piston cylinder (3)
It is interior and abutted with elastic membrane (2), the other end of the negative pressure push rod (4) be located at the outside of piston cylinder (3) and with the negative pressure
Button (1) is connected；There are the space pushed for negative pressure button (1), the bullets between the negative pressure button (1) and piston cylinder (3)
Property film (2) by negative pressure button (1) drive negative pressure push rod (4) push occur flexible deformation.
6. diaphragm type according to claim 5 draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: described
It is equipped with resetting apparatus between negative pressure button (1) and piston cylinder (3), one end of the resetting apparatus is abutted with piston cylinder (3), another
End is connected on negative pressure button (1).
7. diaphragm type according to claim 5 draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: described
It is equipped in space between negative pressure push rod (4) and the bottom of piston cylinder (3) and restores push rod (11), one end of the recovery push rod (11)
It is abutted with the elastic membrane (2), the other end is inserted in the through-hole (22) that the piston cylinder (3) bottom opens up, in the recovery
Push rod is arranged with resetting apparatus on (15), and the both ends of the resetting apparatus are connected to respectively restores push rod (11) and piston cylinder (3)
Bottom.
8. diaphragm type according to claim 6 or 7 draws back blood method and examines pipeline access self-resetting devices, it is characterised in that:
Be equipped with the protrusion (10) limited to negative pressure push rod (4) inside the piston cylinder (3), one end of the negative pressure push rod (4) with should
Raised (10) abut；There are the gaps (12) for liquid communication between the protrusion (10) and the inner wall of piston cylinder (3).
9. diaphragm type according to claim 5 draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: described
Negative pressure push rod (4) is equipped with sealing ring (7), which passes through between sealing ring (7) and piston cylinder (3) internal cavity
Realize sealing.
10. diaphragm type according to claim 5 draws back blood method and examines pipeline access self-resetting devices, it is characterised in that: institute
Negative pressure button (1) is stated equipped with multiple guide posts (23), the top of the piston cylinder (3) offers quantity and guide post (23) phase
Same guide groove (21), each guide post (23) are plugged in a guide groove (21).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489183.8A CN109985294B (en) | 2017-12-30 | 2017-12-30 | Self-recovery device for checking pipeline passage by diaphragm type blood drawing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489183.8A CN109985294B (en) | 2017-12-30 | 2017-12-30 | Self-recovery device for checking pipeline passage by diaphragm type blood drawing method |
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| CN109985294A true CN109985294A (en) | 2019-07-09 |
| CN109985294B CN109985294B (en) | 2023-12-26 |
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| CN201711489183.8A Active CN109985294B (en) | 2017-12-30 | 2017-12-30 | Self-recovery device for checking pipeline passage by diaphragm type blood drawing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110251116A (en) * | 2019-07-15 | 2019-09-20 | 河北医科大学第一医院 | A kind of vascular access flow detector and its calculation method |
| CN113018577A (en) * | 2021-03-29 | 2021-06-25 | 四川大学华西医院 | Venous catheter flushing device |
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| CN110251116A (en) * | 2019-07-15 | 2019-09-20 | 河北医科大学第一医院 | A kind of vascular access flow detector and its calculation method |
| CN113018577A (en) * | 2021-03-29 | 2021-06-25 | 四川大学华西医院 | Venous catheter flushing device |
| CN113018577B (en) * | 2021-03-29 | 2022-07-08 | 四川大学华西医院 | Intravenous catheter flushing device |
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| CN109985294B (en) | 2023-12-26 |
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