CN208598958U - A kind of left heart suction tube of adjustable pressure limiting - Google Patents
A kind of left heart suction tube of adjustable pressure limiting Download PDFInfo
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- CN208598958U CN208598958U CN201720767161.2U CN201720767161U CN208598958U CN 208598958 U CN208598958 U CN 208598958U CN 201720767161 U CN201720767161 U CN 201720767161U CN 208598958 U CN208598958 U CN 208598958U
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- suction tube
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Abstract
The utility model relates to department of cardiac surgery's medical instruments field, specifically a kind of left heart suction tube of adjustable pressure limiting, including attract tube body, described one end for attracting tube body is provided with 1/4 connector of proximal end, and the other end is provided with distal end and attracts tube head；It is described to attract the tube body inner core that strip is provided on the inside of 1/4 connector of tubular body proximal end；Described that tube body middle and upper part is attracted to be provided with the cavity switch for opening or closing attraction tube body, the tube body inner core is passed through out of cavity switch；The pressure limiting valve system for being provided on attraction tube wall between the cavity switch and 1/4 connector of proximal end and tube cavity being attracted to be connected to, the left heart suction tube of the adjustable pressure limiting of the utility model, the handling of suction tube is improved, while avoiding gas and enters a left side and feeling concerned about system；Increased pressure limiting valve system realizes that negative pressure multiscale pressure limiting is adjusted in suction tube body, continuous, varying strength attraction negative pressure can be obtained, and can fully meet different suction pressure needs in clinical position.
Description
Technical field
The utility model relates to department of cardiac surgery's medical instruments field, specifically a kind of left heart suction tube of adjustable pressure limiting.
Background technique
In cardiac operation under direct vision, a large amount of left heart blood can make heart full, and cardiac muscle cell's tension increases, and seriously affects
Cardiac function, while the stagnant influence of the left heart blood stasis of blood operates visual area, increases operating difficulty and risk.Therefore in cardiac operation under direct vision
In, placing left heart venting is routine operation, and the whether unobstructed pith for being not only myocardial preservation of left heart venting, and is to protect
Card operation visual area clearly important measures.But the left heart of tradition attracts the negative pressure generally generated by occlusion pump, through piping remote
It holds suction port to generate attraction, there is a problem of what attraction was difficult to control.Blood cannot be sufficiently sucked out in too small attraction, unfavorable
In myocardial preservation, visual area is also unintelligible, increased operation risk and time.It is intracardiac that excessive attraction will lead to suction port absorption
Film or endocardial tissue such as valve, key rope are inhaled into suction port, block suction port, so as to cause extravasated blood in the chambers of the heart, and meanwhile it is right
Tissue generates very big destruction.In surgical procedure, the repeated multiple times left heart suction tube of adjustment, the side at most used at present are often needed
Formula is lifting suction tube, and violence makes endocardial tissue be detached from suction port.Particularly with the infant that the age is small, cardiac muscle is tender, works as attraction
When mouth absorption endocardial tissue, tissue avulsion can be made by blindly pulling suction tube, and damage is bigger, and left heart attraction is obstructed to will lead to operation
The main reason for time increases, and the complication generated is also perioperative deaths.
Left heart suction tube used in clinic at present, does not enter a left side by suction tube to gas and feels concerned about system and protect, increasing
The complication and risk of aerating bolt, the suction tube of inner core is not softer, and operation controlling is bad, is not easy for suction tube head end to be put into
Suitable position, and then increase operating difficulty.Therefore, a kind of effective and safe left heart suction device how is developed, to reduce
Operating difficulty increases success rate of operation, reduces medical treatment damage and expense, becomes that there is an urgent need in the art to solve.
Utility model content
The goal of the invention of the utility model is to overcome defect described in background technique, thus realize a kind of manufacture at
This is low, and small to patient tissue organ damage, attraction is flexibly adjustable, and the left heart of adjustable pressure limiting for being applicable in various crowd's operations attracts
Pipe.
For achieving the above object, the technical solution of the utility model is: a kind of left heart suction tube of adjustable pressure limiting, including
Attract tube body, described one end for attracting tube body is provided with 1/4 connector of proximal end, and the other end is provided with distal end and attracts tube head, and proximal end
It is drainage lumens that 1/4 connector and distal end, which attract the attraction tubular body between tube head, and the distal end attracts tube head to be provided with medium pore
And side opening；It is described to attract the tube body inner core that strip is provided on the inside of 1/4 connector of tubular body proximal end；On in the attraction tube body
Portion, which is provided with, opens or closes the cavity switch for attracting tube body, and the tube body inner core is passed through out of cavity switch；The cavity is opened
Close the pressure limiting valve system for being provided on the attraction tube wall between 1/4 connector of proximal end and tube cavity being attracted to be connected to.
As the optimal technical scheme of the utility model, the pressure limiting valve system includes having externally threaded thread core, band
Internal thread thread cap, pressure spring and valve plates, the thread core inner cavity are connected to tube cavity is attracted, the outer spiral shell of thread core
Line and the installation of thread cap screw-internal thread fit, thread cap outer end are provided with pressure regulation through-hole, and the valve plates are located in pressure regulation through-hole
Side, the diameter of valve plates is greater than the diameter of pressure regulation through-hole, and the diameter of valve plates is less than the internal diameter of thread cap, guarantees gas circulation
While realize excellent sealing, pressure spring one end is fixedly installed on inside thread core, pressure spring other end fixed valve door-plate,
Threadingly cap length direction is provided with graduation mark for the periphery of the thread cap.
As the optimal technical scheme of the utility model, pressure spring and valve plates are made of stainless steel material.
As the optimal technical scheme of the utility model, the distal end attracts tube head internal activity to be provided with interior core plug, institute
It is tapered to state interior core plug bottom, and inner core plug tip end is by the way that outside centre bore protruding tube, the tube body inner core is set to proximal end 1/4 and connects
In suction tube body between head and interior core plug.
As the optimal technical scheme of the utility model, tube body inner core is made of metal material in the suction tube body, tool
There are certain compliance and support force.
The working principle of the left heart suction tube of the adjustable pressure limiting of the utility model:
When in use, according to the chambers of the heart position that distal end attracts tube head that need to be placed in, with the help of tube body inner core, by drainage tube
Body is adjusted to different shapes, fixed to attract tube body after distal end attracts tube head to reach expected chambers of the heart position by merging notch, to
Outer extraction tube body inner core closes cavity switch after tube body inner core is switched by cavity, so that drainage lumens be closed, then will
1/4 connector is connected on extracorporal circulatory system pipeline, is opened cavity switch, is normally attracted.
When the operation for needing to adjust negative pressure in suction tube body: when thread cap left end scale is directed at thread core entrance, valve
Door-plate is separated with the pressure regulation through-hole of thread cap, and pressure regulation through-hole is open, and negative pressure is 0cmH in suction tube body2O；Rotate clockwise screw thread
When cap, valve plates rely on the elastic force of pressure spring, the pressure regulation through-hole of sealing thread cap；When the negative pressure in thread core is more than pressure regulation bullet
When the corresponding pressure of spring, the pressure regulation through-hole automatic opening of thread cap, atmosphere is entered in thread core by pressure regulation through-hole, thread core and
The intracorporal negative pressure decline of suction tube；When the pressure corresponding lower than pressure spring of the negative pressure in thread core, valve plates and thread cap
The contact of pressure regulation through-hole, pressure regulation through-hole is re-closing off, and is limited to negative pressure in pressure limiting valve system in the range of needs；With such
It pushes away, when thread cap right end scale is directed at thread core entrance, valve plates are extruded between thread core and thread cap, pressure regulation through-hole
Choke-out, negative pressure can be infinitely great in pressure limiting valve system, rotates clockwise thread cap as a result, negative pressure limit value can in pressure limiting valve system
By 0cmH2O continuously changes between infinity；When rotation thread cap counterclockwise, valve plates reduce the pressure of thread cap, limit
Negative pressure limit value can be from infinity to 0cmH in valve mechanism2Continuously change between O.
The left heart suction tube of the adjustable pressure limiting of the utility model the utility model has the advantages that
1. the left heart suction tube of the adjustable pressure limiting of the utility model attracts tubular body to have the tube body inner core of strip, improve
The compliance of suction tube and handling；Increased interior core plug can completely enclose the drainage lumens of suction tube, be avoided that attraction process
Middle gas enters a left side and feels concerned about system, into coronary artery or entocranial artery, forms coronary artery or entocranial artery aeroembolism, causes acute
Myocardial infarction or acute cerebral infarction greatly reduce openheart surgery risk.
2. the left heart suction tube of the adjustable pressure limiting of the utility model attracts and is provided on tube wall and attracts tube cavity company
Logical pressure limiting valve system, in suction tube body negative pressure can multiscale adjust, when negative pressure is more than preset pressure index, pressure limiting valve machine in pipe
Structure just opens, and communicates in suction tube body with atmosphere, gently mentions attraction tube body, and the tissue being inhaled into can be deviate from, as tissue is deviate from,
Negative pressure multiscale pressure limiting in suction tube body may be implemented to adjust, continuous, varying strength attraction negative pressure can be obtained, can fully meet
Different suction pressures need in clinical position.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the left heart suction tube of adjustable pressure limiting of the utility model；
Fig. 2 is that the left heart suction tube of adjustable pressure limiting of the utility model removes the structural schematic diagram of tube body inner core and interior core plug.
Attract tube body, 1/4 connector of the proximal end 2- referring to Fig. 1-2: 1-, the distal end 3- attracts tube head, 301- medium pore, the side 302-
Hole, core plug in 303-, 4- tube body inner core, 5- cavity switch, 6- pressure limiting valve system, 601- thread core, 602- thread cap, 603- tune
Pressing spring, 604- valve plates, 605- pressure regulation through-hole.
Specific embodiment
The left heart suction tube of the adjustable pressure limiting of the utility model is done more with reference to the accompanying drawing and by specific embodiment
Add detailed description.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Embodiment 1:
The left heart suction tube of the adjustable pressure limiting of the utility model, including attract tube body 1, described one end for attracting tube body is provided with
1/4 connector 2 of proximal end, the other end is provided with distal end and attracts tube head 3, and 1/4 connector 2 of proximal end and distal end attract the suction between tube head 3
It is drainage lumens inside skirt body 1, the distal end attracts tube head 3 to be provided with medium pore 301 and side opening 302；In the attraction tube body 1
The tube body inner core 4 of strip is provided on the inside of 1/4 connector 2 of portion proximal end；1 middle and upper part of attraction tube body, which is provided with, to be opened or closed
Attract the cavity switch 5 of tube body 1, the tube body inner core 4 is passed through out of cavity switch 5；The cavity switch 5 and proximal end 1/4 connect
The pressure limiting valve system 6 for being provided on attraction 1 side wall of tube body between first 2 and 1 inner cavity of tube body being attracted to be connected to；The distal end suction tube
First 3 internal activity is provided with interior core plug 303, and interior 303 bottom of core plug is tapered, and 303 tip of interior core plug passes through centre bore
Outside 301 protruding tubes, the tube body inner core 4 is set in the attraction tube body 1 between 1/4 connector 2 of proximal end and interior core plug 303.
The pressure limiting valve system 6 includes with externally threaded thread core 601, band internal thread thread cap 602, pressure regulation bullet
Spring 603 and valve plates 604,601 inner cavity of thread core are connected to 1 inner cavity of tube body is attracted, 601 external screw thread of thread core and thread cap
The installation of 602 screw-internal thread fits, 602 outer end of thread cap are provided with pressure regulation through-hole 605, and the valve plates 604 are located at pressure regulation through-hole
605 insides, the diameter of valve plates 604 is greater than the diameter of pressure regulation through-hole 605, and the diameter of valve plates 604 is less than thread cap 602
Internal diameter, guarantee gas realize excellent sealing while circulation, and 603 one end of pressure spring is fixedly installed on inside thread core 601, is adjusted
603 other end fixed valve door-plate 604 of pressing spring, threadingly 602 length direction of cap is provided with scale for the periphery of the thread cap 602
Line, pressure spring 603 and valve plates 604 are made of stainless steel material.
The 1 interior tube body inner core 4 of attraction tube body is made of metal material, and has certain compliance and support force.
The above descriptions are merely exemplary embodiments of the present utility model, the model being not intended to limit the utility model
Enclose, the equivalent variations that any those skilled in the art is made under the premise of not departing from the utility model conceptions and principles with
Modification should belong to the range of the utility model protection.
Claims (6)
1. a kind of left heart suction tube of adjustable pressure limiting, including attract tube body, described one end for attracting tube body is provided with proximal end 1/4 and connects
Head, the other end is provided with distal end and attracts tube head, and it is to draw that 1/4 connector of proximal end and distal end, which attract the attraction tubular body between tube head,
Flow chamber, it is characterised in that: the distal end attracts tube head to be provided with medium pore and side opening；The attraction tubular body proximal end 1/4 connects
Head inside is provided with the tube body inner core of strip；It is described that tube body middle and upper part is attracted to be provided with the cavity for opening or closing and attracting tube body
Switch, the tube body inner core are passed through out of cavity switch；Attraction tube wall between the cavity switch and 1/4 connector of proximal end
On be provided with and attract the pressure limiting valve system that is connected to of tube cavity.
2. the left heart suction tube of adjustable pressure limiting according to claim 1, it is characterised in that: the pressure limiting valve system includes having
Externally threaded thread core, band internal thread thread cap, pressure spring and valve plates, in the thread core inner cavity and suction tube body
Chamber connection, thread core external screw thread and the installation of thread cap screw-internal thread fit, thread cap outer end is provided with pressure regulation through-hole, the valve
Plate is located on the inside of pressure regulation through-hole, and the diameter of valve plates is greater than the diameter of pressure regulation through-hole, and the diameter of valve plates is less than thread cap
Internal diameter, pressure spring one end are fixedly installed on inside thread core, pressure spring other end fixed valve door-plate.
3. the left heart suction tube of adjustable pressure limiting according to claim 1, it is characterised in that: the distal end attracts living inside tube head
Dynamic to be provided with interior core plug, the interior core plug bottom is tapered, and inner core plug tip end passes through outside centre bore protruding tube, in the tube body
Core is set in the suction tube body between 1/4 connector of proximal end and interior core plug.
4. the left heart suction tube of adjustable pressure limiting according to claim 3, it is characterised in that: tube body inner core in the suction tube body
It is made of metal material.
5. the left heart suction tube of adjustable pressure limiting according to claim 2, it is characterised in that: the periphery of the thread cap is threadingly
Cap length direction is provided with graduation mark.
6. the left heart suction tube of adjustable pressure limiting described in -5 any one claims according to claim 1, it is characterised in that: pressure regulation
Spring and valve plates are made of stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720767161.2U CN208598958U (en) | 2017-06-29 | 2017-06-29 | A kind of left heart suction tube of adjustable pressure limiting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720767161.2U CN208598958U (en) | 2017-06-29 | 2017-06-29 | A kind of left heart suction tube of adjustable pressure limiting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208598958U true CN208598958U (en) | 2019-03-15 |
Family
ID=65658730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720767161.2U Active CN208598958U (en) | 2017-06-29 | 2017-06-29 | A kind of left heart suction tube of adjustable pressure limiting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208598958U (en) |
-
2017
- 2017-06-29 CN CN201720767161.2U patent/CN208598958U/en active Active
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