CN205885460U - Can regulate and control simple and easy cerebrospinal fluid collection device of measurable pressure - Google Patents
Can regulate and control simple and easy cerebrospinal fluid collection device of measurable pressure Download PDFInfo
- Publication number
- CN205885460U CN205885460U CN201620443803.9U CN201620443803U CN205885460U CN 205885460 U CN205885460 U CN 205885460U CN 201620443803 U CN201620443803 U CN 201620443803U CN 205885460 U CN205885460 U CN 205885460U
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- Prior art keywords
- hard tube
- pressure
- cerebrospinal fluid
- scale
- pressure measurement
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Abstract
The utility model discloses a can regulate and control simple and easy cerebrospinal fluid collection device of measurable pressure, main content is: including pjncture needle link, the simple and easy pressure measuring equipment of scale, stream speed adjusting festival ware, hose, left cavity hard tube, wooden plug, right cavity hard tube and collection test tube, the simple and easy pressure measuring equipment of scale is connected with the pjncture needle link, the simple and easy pressure measuring equipment of scale passes through the hose and flows speed adjusting festival ware to be connected, stream speed adjusting festival ware passes through the hose and is connected with right cavity hard tube top, the wooden plug is installed on collecting the test tube, left side cavity hard tube and right cavity hard tube are installed in the wooden plug. The utility model discloses can reduce danger surveing the intracranial pressure force variation regulate and control the speed that cerebrospinal fluid flows simultaneously in real time, reduce working hard of operator simultaneously, increase the comfort.
Description
Technical field
The utility model is related to a kind of cerebrospinal fluid collection device technical field, specifically, particularly to a kind of controllable
Can pressure measurement simple cerebrospinal fluid collection device.
Background technology
Intracranial pressure, that is, in cranial cavity cerebrospinal fluid pressure, can be surveyed by lumbar puncture.In general, Medical lumbar is worn
Thorn bag only has puncture needle and teat glass composition, the measurement pressure-measuring pipe (hereinafter referred to as pressure-measuring pipe) of intracranial pressure or pressure gauge and wear
Pricker separately, needs during pressure measurement to connect both, not only increases operator's workload, also increase during connection and transmission
Potential infection risk, can not show intracranial pressure in real time；Take during cerebrospinal fluid typically by glass after puncturing success
Test tube directly accesses from the afterbody of puncture needle.Although easy, Railway Project can be brought: the speed that (1) cerebrospinal fluid flows out is not
Can control, especially more need to control cerebrospinal fluid to flow out when the patient higher to intracranial pressure carries out puncturing and take cerebrospinal fluid
Speed, in order to avoid flow velocity is too fast and causes danger；(2) test tube leaving and taking cerebrospinal fluid is oversize, often accesses brain ridge after operation success
During liquid, operator must use hand steered test tube for a long time, during client need exchange cerebrospinal fluid especially after subarachnoid hemorrhage,
The time waiting is longer, and operator must keep same posture very arduous for a long time.
Utility model content
Technical problem to be solved in the utility model is that disclosing one kind can for above-mentioned deficiency of the prior art
Regulation and control can pressure measurement simple cerebrospinal fluid collection device, its not only by flow rate adjustment device and collect glass pipe end height change
Become the flow velocity of regulation and control cerebrospinal fluid, reduce the arduous of operator, convenient operation is additionally it is possible to show cerebrospinal pressure in real time.
The utility model solves its technical problem and be the technical scheme is that a kind of controllable can the simple cerebrospinal fluid of pressure measurement
Collection device, including puncture needle connection end, the simple device for pressure measurement of scale, flow regulator, flexible pipe, left sky hard tube, wood
Plug, right hollow hard tube and collection test tube；The simple device for pressure measurement of described scale is connected with puncture needle connection end, described scale letter
Easily device for pressure measurement is connected with flow regulator by flexible pipe, and described flow regulator passes through flexible pipe and right hollow hard tube top
Connect, described stopper is arranged on collection test tube, and described left sky hard tube and right hollow hard tube are arranged in stopper.
As a kind of preferred embodiment of the present utility model, the graduated device for pressure measurement of described band is by with quarter
The scale end of degree and rear portion bulb composition, scale end indicates cerebrospinal pressure reading, and rear portion bulb is the gas storage portion of hollow.
As a kind of preferred embodiment of the present utility model, described left sky hard tube top is communicated with air.
As a kind of preferred embodiment of the present utility model, the bottom of described left sky hard tube bottom and right hollow hard tube
All connect with collection test tube.
Operation principle: the link of puncture needle connection end punctures Aculeata, this end is Internal and external cycle double braid covering installing meter, and inner ring is permissible
Stretch into inside puncture needle tail end, and outer ring then can surround the tail end of puncture needle, and be tightened by screw thread thereon
The tail end of puncture needle.Out link glass three-way pipe from puncture needle connection end, one end connects the graduated pressure of easy band and surveys
Amount device, what the other end connected is flow rate adjustment device.Graduated device for pressure measurement is carried to be by the graduated scale end of band
Form with rear portion bulb, scale end indicates cerebrospinal pressure reading, rear portion is the gas storage portion of hollow, two parts cumulative volume is
18.9ml, using The Ideal-Gas Equation principle, pressure change, gas compression cause the change of gas volume to carry out reaction pressure
Size, the change of intracranial pressure can be observed in real time, other end contact is flow rate adjustment device, and this device is by t type
Regulation and control stalk, hollow ball-type valve element, cast valve pocket composition, realize flow velocity regulation by changing cross section cerebrospinal fluid by area
, lower even flexible pipe, the flexible pipe other end passes through the hard tube collected on test tube cork, and hard tube stretches in collection test tube, can pass through
The test tube of hard tube is inner to observe flow velocity speed；One hard tube is also equipped with stopper, connects in collecting pipe and air, when cerebrospinal fluid flows into
When collecting test tube, this hard tube can exclude examination inner air tube, keeps air pressure balance, such that it is able to by raising or reducing flexible pipe
Collect test tube end, part energy is converted to potential energy, thus reducing or increasing kinetic energy, adjust flow velocity.After chain connects, operator
Can will collect test tube forward direction or slant setting one side, adjust the rate of outflow of cerebrospinal fluid by flow rate adjustment device, also may be used
By the artificial height adjusting and collecting test tube, to realize the regulation and control purpose of cerebrospinal fluid flow velocity by the change of pressure.
Pressure tester principle:
When the perfect gas of certain volume is in the case of mutually synthermal, the change of pressure can cause this gas volume
Change is pv=nrt, the gas of equal in quality, mutually synthermal when nrt identical, so p raises, v can diminish, when the body of change
When amassing in the pipe be reflected in uniform diameter, the change of pressure and length of tube have positive correlation, in other words it is simply that length l is permissible
The size of reflection pressure.
Because the puncture needle connection end of this device, pressure tester connection end, cerebrospinal fluid collecting terminal three end are in parallel, three
Pressure is equal.Assume ideally (to disregard frictional force, and flow velocity is comparatively small, therefore put aside that fluid affects),
That is: pPin end=pOutflow end=pPressure measurement end；
Record the definition of intracranial pressure: p according to lumbar puncturePin end=p0+ρgh (1)；
The Ideal-Gas Equation: pv=nrt；
Because mutually synthermal, same substance amount, nrt can be considered constant herein, so then having before and after pressure change: pBeforevBefore
=nrt (2), pAfterwardsvAfterwards=nrt (3)；
Can be derived from p by 2,3BeforevBefore=pAfterwardsvAfterwards(4)；
Again because pressure tester is communicated with air before being not connected with, so pBeforevBefore=p0v0(5)；
After connecting puncture needle, the pressure of cerebrospinal fluid can make gas in pressure-measuring pipe be compressed, so there being pAfterwardsvAfterwards=pPin endvAfterwards
(6)；
Equation 1,5,6 is substituted into 4 obtain: p0v0=(p0+ρgh)vAfterwards(7)；
Solve equation 7 and obtain vAfterwards=p0v0/(p0+ρgh) (8)；
After must being connected by 8, pressure tester gas changeable volume is: δ v=ρ ghv0/(p0+ρgh) (9)；
Again because the volume of pressure tester change is identical with scale akrencephalon spinal fluid inflow volume, can be derived from δ v=π r2l
(10)；
Again 10 are substituted in 9 and obtain: π r2L=ρ ghv0/(p0+ρgh) (11)；
Solve equation 11 to obtain: v0=π r2l(p0+ρgh)/ρgh (12)；
pBefore、vBeforeRepresent the pressure before pressure change and volume, p respectivelyAfterwards、vAfterwardsRepresent the pressure after pressure change and body respectively
Long-pending, p0For atmospheric pressure, take 1.01*105Pa, v0It is under conditions of an atmospheric pressure, the volume unit of pressure tester is ml, and ρ is
Fluid density, the density herein fetched water, ρ=103Kg/m3, g are acceleration of gravity, and g=9.8n/kg in formula, because lumbar puncture
The intracranial pressure recording generally is represented with cm water column, so h reads water-column for gravity pressure-measuring pipe herein, unit is cm, and v is reason
Think the volume of gas, n represents the amount of gaseous matter, and t then represents the thermodynamic temperature of perfect gas；Also constant a: r is
Ideal gas constant, π is pi, and r has the pipe diameter at scale end for pressure tester, and unit is mm, and l is survey after link puncture needle
The length that pressure device scale akrencephalon spinal fluid flows through, unit is cm.
Assume under ideal conditions, when intracranial pressure is 40cm water column pressure, pressure tester scale end after link puncture needle
Length l that cerebrospinal fluid flows through is 10cm, and pipe diameter, in the case of 3mm, above-mentioned numerical value is substituted into equation 12 and obtains: v0=
18.9ml；I.e. when under above-mentioned condition, when pressure tester initial volume is 18.9ml, when intracranial pressure is for 40cm water column pressure,
The length that cerebrospinal fluid flows through at pressure tester scale end is 10cm；When setting pressure tester initial volume as 18.9ml, length l with
H relation be: l=26.22h/ (101+9.8h) (13), the relation between l and h can be drawn according to above-mentioned formula 13, will
Different h are marked at corresponding l, you can in intracranial pressure change, read the big of the intracranial pressure that lumbar puncture reflects in real time
Little.
The utility model compared with prior art has the advantage that
A kind of controllable disclosed in the utility model can pressure measurement simple cerebrospinal fluid collection device, it can be in real-time monitored cranium
The change of interior pressure regulates and controls the speed of cerebrospinal fluid outflow simultaneously, reduces dangerous, reduces the arduous of operator simultaneously, increases comfortable
Sense.
Brief description
Fig. 1 is a kind of structural representation of specific embodiment of the present utility model；
Fig. 2 is a kind of structural representation of specific embodiment puncture needle connection end of the present utility model；
Fig. 3 is a kind of structural representation of the simple device for pressure measurement of specific embodiment scale of the present utility model；
Fig. 4 is a kind of structural representation of specific embodiment flow regulator of the present utility model.
Description of reference numerals:
1: puncture needle connection end, 2: the simple device for pressure measurement of scale, 3: flow regulator, 4: flexible pipe, 5: left empty hard
Pipe, 6: stopper, 7: right hollow hard tube, 8: collect test tube.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment describes the utility model specific embodiment:
It should be noted that the structure of in figure signal, ratio, size etc. appended by this specification, all only in order to coordinate explanation
Content disclosed in book, so that those skilled in the art understands and reads, is not limited to the utility model enforceable
Qualifications, the adjustment of the modification of any structure, the change of proportionate relationship or size, can be generated by not affecting the utility model
Effect and the purpose that can reach under, the technology contents that all should still fall disclosed in the utility model obtain the scope that can cover
Interior.
Meanwhile, in this specification cited as " on ", D score, "left", "right", " middle " and " one " etc. term, also
Only understanding for ease of narration, and it is not used to limit the enforceable scope of the utility model, being altered or modified of its relativeness,
Under no essence change technology contents, when being also considered as the enforceable category of the utility model.
As shown in Figure 1 to 4, it illustrates specific embodiment of the present utility model；As illustrated, the utility model is public
A kind of controllable opened can pressure measurement simple cerebrospinal fluid collection device, including puncture needle connection end 1, the simple device for pressure measurement of scale
2nd, flow regulator 3, flexible pipe 4, left sky hard tube 5, stopper 6, right hollow hard tube 7 and collection test tube 8；The simple pressure of described scale
Measurement apparatus 2 are connected with puncture needle connection end 1, and the simple device for pressure measurement 2 of described scale passes through flexible pipe 4 and flow regulator 3
Connect, described flow regulator 3 is connected with right hollow hard tube 7 top by flexible pipe 4, described stopper 6 is arranged on collection test tube 8
On, described left sky hard tube 5 and right hollow hard tube 7 be arranged in stopper 6.
Preferably, the graduated device for pressure measurement 2 of described band is made up of the graduated scale end of band and rear portion bulb,
Scale end indicates cerebrospinal pressure reading, and rear portion bulb is the gas storage portion of hollow.
Preferably, described left sky hard tube 5 top is communicated with air.
Puncture needle connection end 1 link punctures Aculeata, and cerebrospinal fluid flows out along pipeline, through threeway glass tube, a part
Flow in the simple device for pressure measurement of scale 2, another part flows to flow regulator 3；Flow to the simple device for pressure measurement of scale 2
Cerebrospinal fluid air compression can be made in pipe according to principle, when reaching pressure equilibrium, that is, the pressure of side pressure inner air tube is equal to
During intracranial pressure, the length that cerebrospinal fluid flows through can read intracranial pressure size, and flowing through flow regulator 3 can be by changing cerebrospinal fluid
Regulation and control cerebrospinal fluid flow velocity is amassed by effective cross section, collecting the stopper 6 on test tube 8 has a double glazing pipe, and balance collects examination
Pressure inside and outside pipe 8, when cerebrospinal fluid flows into and collects test tube 8, can raise collection test tube height, increase and collect test tube and puncture
Difference in height between point, and slow down flow velocity；Reduce the height collecting test tube, increase cerebrospinal fluid flow velocity.
Above in conjunction with accompanying drawing, the utility model preferred embodiment is explained in detail, but the utility model is not limited to
Above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also be without departing from the utility model
Make a variety of changes on the premise of objective.
Many other can be made without departing from spirit and scope of the present utility model to change and remodeling.It should be appreciated that this reality
It is not limited to specific embodiment with new, scope of the present utility model is defined by the following claims.
Claims (4)
1. a kind of controllable can pressure measurement simple cerebrospinal fluid collection device it is characterised in that: include puncture needle connection end, scale simple
Device for pressure measurement, flow regulator, flexible pipe, left sky hard tube, stopper, right hollow hard tube and collection test tube；Described scale letter
Easily device for pressure measurement is connected with puncture needle connection end, and the simple device for pressure measurement of described scale is by flexible pipe and flow regulator
Connect, described flow regulator is connected with right hollow hard tube top by flexible pipe, described stopper is arranged on collection test tube, described
Left sky hard tube and right hollow hard tube are arranged in stopper.
2. as claimed in claim 1 a kind of controllable can pressure measurement simple cerebrospinal fluid collection device it is characterised in that: described carry
By carrying graduated scale end and rear portion bulb to form, scale end indicates cerebrospinal pressure and reads the device for pressure measurement of scale
Number, rear portion bulb is the gas storage portion of hollow.
3. as claimed in claim 1 a kind of controllable can pressure measurement simple cerebrospinal fluid collection device it is characterised in that: described left
Empty hard tube top is communicated with air.
4. as claimed in claim 1 a kind of controllable can pressure measurement simple cerebrospinal fluid collection device it is characterised in that: described left
Empty hard tube bottom is all connected with collection test tube with the bottom of right hollow hard tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620443803.9U CN205885460U (en) | 2016-05-16 | 2016-05-16 | Can regulate and control simple and easy cerebrospinal fluid collection device of measurable pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620443803.9U CN205885460U (en) | 2016-05-16 | 2016-05-16 | Can regulate and control simple and easy cerebrospinal fluid collection device of measurable pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205885460U true CN205885460U (en) | 2017-01-18 |
Family
ID=57765374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620443803.9U Expired - Fee Related CN205885460U (en) | 2016-05-16 | 2016-05-16 | Can regulate and control simple and easy cerebrospinal fluid collection device of measurable pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205885460U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523937A (en) * | 2018-05-25 | 2018-09-14 | 予果生物科技（北京）有限公司 | Cerebrospinal fluid extraction device |
| CN110522478A (en) * | 2019-09-20 | 2019-12-03 | 中国人民解放军陆军军医大学第一附属医院 | A kind of cerebrospinal fluid extraction tool |
-
2016
- 2016-05-16 CN CN201620443803.9U patent/CN205885460U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523937A (en) * | 2018-05-25 | 2018-09-14 | 予果生物科技（北京）有限公司 | Cerebrospinal fluid extraction device |
| CN108523937B (en) * | 2018-05-25 | 2023-09-19 | 予果生物科技（北京）有限公司 | cerebrospinal fluid extractor |
| CN110522478A (en) * | 2019-09-20 | 2019-12-03 | 中国人民解放军陆军军医大学第一附属医院 | A kind of cerebrospinal fluid extraction tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20180516 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |