CN114659703A - Blood line pressure detection system of blood separator - Google Patents
Blood line pressure detection system of blood separator Download PDFInfo
- Publication number
- CN114659703A CN114659703A CN202210307305.1A CN202210307305A CN114659703A CN 114659703 A CN114659703 A CN 114659703A CN 202210307305 A CN202210307305 A CN 202210307305A CN 114659703 A CN114659703 A CN 114659703A
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- rotating
- blood
- block
- detection
- arc surface
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Links
- 239000008280 blood Substances 0.000 title claims abstract description 84
- 210000004369 blood Anatomy 0.000 title claims abstract description 84
- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 239000000523 sample Substances 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 7
- 210000004204 blood vessel Anatomy 0.000 description 5
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 230000002572 peristaltic effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 239000012503 blood component Substances 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000002874 hemostatic agent Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/003—Fluidic connecting means using a detachable interface or adapter between the process medium and the pressure gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L15/00—Devices or apparatus for measuring two or more fluid pressure values simultaneously
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
Abstract
The invention relates to a blood pipeline pressure detection system of a blood separator, which comprises: the fixed assembly is provided with a rotating assembly and a detection assembly; the rotating assembly comprises a rotating block, the rotating block is rotationally connected with the fixed assembly, and the rotating block is provided with an outer arc surface; the detection assembly comprises a detection fixture block, the detection fixture block is fixedly connected with the fixing assembly, the detection fixture block is provided with an inner arc surface, and the inner arc surface and the outer arc surface are concentrically arranged; the blood pipeline is held between the inner arc surface and the outer arc surface, and the inner arc surface is provided with a detection probe for detecting the pressure of the blood pipeline. The blood pipeline pressure detection method of the blood separator can reliably and stably clamp the blood pipeline, is convenient to operate and has more accurate measurement precision.
Description
Technical Field
The invention relates to the technical field of blood separation, in particular to a blood pipeline pressure detection system of a blood separator.
Background
The clinical blood is widely used in the field of modern medicine, and the blood collection and separation have strict application requirements on blood component separation or collection consumables. For example, during blood collection, blood flows out of a venous blood vessel, enters a blood collection line, and is mixed with blood anticoagulant in the blood collection line; the blood collection line continuously draws blood from the venous blood vessel under the squeezing of the peristaltic pump. In order to smoothly collect more blood, the pressure in the blood collection pipeline needs to be detected in the continuous working process of the peristaltic pump; the peristaltic pump adjusts the rotation speed according to the detected pressure, so that discomfort caused by the fact that the difference between the body blood pressure and the pressure in the blood collection pipeline is too large is prevented from occurring to a hemostat.
However, in the existing blood line pressure detecting system, the operations of clamping and removing the blood line are not convenient enough, and the pressure detection is generally performed by pressing the outer wall of the blood line through a single detecting probe.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a blood pipeline pressure detection system of a blood separator, which can reliably and stably clamp a blood pipeline, is convenient to operate and has more accurate measurement precision.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a hemoseparator bloodline pressure sensing system comprising:
the fixed assembly is provided with a rotating assembly and a detection assembly;
the rotating assembly comprises a rotating block, the rotating block is rotationally connected with the fixed assembly, and the rotating block is provided with an outer arc surface;
the detection assembly comprises a detection fixture block, the detection fixture block is fixedly connected with the fixing assembly, the detection fixture block is provided with an inner arc surface, and the inner arc surface and the outer arc surface are concentrically arranged;
the blood pipeline is held between the inner arc surface and the outer arc surface, and the inner arc surface is provided with a detection probe for detecting the pressure of the blood pipeline.
Furthermore, the inner concave groove has been seted up to the interior cambered surface, and outer recess has been seted up to the outer cambered surface, and the blood pipeline is by the centre gripping between inner concave groove and outer recess and flattened.
Further, fixed subassembly includes the base plate, is provided with fixed fixture block and center pin on the base plate, and the commentaries on classics piece rotates with the center pin to be connected, and fixed fixture block is seted up and is used for holding the circular arc groove of commentaries on classics piece.
Furthermore, the rotating assembly is provided with a positioning device, and the positioning device is used for fixing the rotating angle of the rotating assembly.
Furthermore, the rotating block is provided with a rotating hole and an inner cavity, a rotating shaft is rotatably arranged in the rotating hole and comprises a rotating frame and a shaft cylinder, the shaft cylinder is rotatably sleeved on the central shaft, and the rotating frame is arranged in the inner cavity;
a sliding block is arranged in the rotating frame and is connected with the rotating block in a sliding mode, a first connecting plate and a second connecting plate are arranged on two sides of the sliding block, the first connecting plate is rotationally connected with the second connecting plate, and the second connecting plate is rotationally connected with the rotating block; the joint of the first connecting plate and the second connecting plate is pressed on the inner side surface of the rotating frame;
a positioning spring is arranged between the rear end of the sliding block and the rotating block, a positioning convex shaft is arranged at the front end of the sliding block, a plurality of positioning holes are formed in the central shaft, and the positioning convex shaft can be inserted into the positioning holes.
Furthermore, guide grooves are formed in the upper side surface and the lower side surface of the inner cavity, guide strips are formed in the upper side surface and the lower side surface of the sliding block, and the guide strips are arranged in the guide grooves in a sliding mode.
Furthermore, the upper end of the shaft cylinder is provided with a shifting lever, the upper end of the rotating block is provided with a concave table, the shifting lever is arranged in the concave table in a swinging mode, and the concave table is provided with a protrusion used for limiting the swinging angle of the shifting lever.
Furthermore, the number of the detection probes is multiple.
Furthermore, a cavity for accommodating the detection probe is formed in the detection clamping block;
the detection probe comprises a top block which can slide in the cavity, and the outer end of the top block can be pressed on the outer wall of the blood pipeline; the inner end of the top block is provided with a pressure sensor, and a detection spring is arranged between the pressure sensor and the cavity.
A blood line pressure detection method of a blood separator comprises the following steps:
a. placing a blood pipeline between the rotating assembly and the detecting assembly;
b. the rotating frame rotates relative to the inner cavity, the rotating frame drives the sliding block to slide backwards through the first connecting plate and the second connecting plate, and the positioning convex shaft is disengaged from the positioning hole;
c. the rotating block synchronously rotates along with the shifting rod until the outer arc surface of the rotating block is opposite to the inner arc surface of the detection clamping block, and the blood pipeline is clamped between the outer arc surface and the inner arc surface;
d. the detection probe presses on the outer wall of the blood pipeline and detects the pressure of the blood pipeline.
The invention has the beneficial effects that:
(1) can be fixed in the blood pipeline between rotating assembly and the determine module through rotating the commentaries on classics piece, the simple operation.
(2) The blood pipeline is by the centre gripping between inner groovy and outer recess and squashed, and the flat pipe wall that test probe can detect the blood pipeline compares in circular pipe wall, can effectively reduce the influence of pipe wall elasticity to pressure measurement result.
(3) The rotating block can be driven to rotate when the shifting lever is rotated, and the position of the rotating block can be locked when the shifting lever is not rotated, so that the operation is convenient and safe and reliable.
(4) Have a plurality of test probe, and test probe can be reliable press in blood pipeline's outer wall, and the testing result is more accurate reliable.
Drawings
The invention is further illustrated by the following examples in conjunction with the drawings.
FIG. 1 is a schematic structural view of the working state of the present invention;
FIG. 2 is a schematic structural view of the present invention in a non-operating state;
FIG. 3 is an exploded view of the structure of the present invention;
FIG. 4 is a schematic structural diagram of a rotary block of the present invention;
FIG. 5 is a schematic view of the construction of the spindle of the present invention;
FIG. 6 is a cross-sectional view of a rotor of the present invention;
FIG. 7 is a schematic view of the positioning assembly of the present invention;
FIG. 8 is a schematic view of the construction of the rotating assembly of the present invention;
fig. 9 is a schematic structural view of the detecting unit of the present invention.
In the figure:
1. fixed subassembly, 2. rotating assembly, 3. detection component, 4. blood pipeline
101. Base plate, 102, fixed block, 103, central shaft, 104, positioning hole
201. Rotating block 202, rotating shaft 203, sliding block 204, guide bar 205, positioning spring 206, first connecting plate 207, second connecting plate 208 and positioning convex shaft
301. Detection fixture block 302, inner arc surface 303, detection probe 304, inner groove
2011. The inner cavity of the
2021. Driving lever 2022, rotating frame 2023, axle tube
3031. And a top block 3032, a pressure sensor 3033, a detection spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a blood separating centrifuge blood line pressure detecting system, concrete structure is provided with rotating assembly 2 and determine module 3 including fixed subassembly 1 on the fixed subassembly 1.
The specific structure of the rotating assembly 2 comprises a rotating block 201, the rotating block 201 is rotatably connected with the fixed assembly 1, and the rotating block 201 is provided with an outer arc surface 2014; the specific structure of the detection assembly 3 comprises a detection fixture block 301, the detection fixture block 301 is fixedly connected with the fixing assembly 1, the detection fixture block 301 is provided with an inner arc surface 302, and the inner arc surface 302 and the outer arc surface 2014 are concentrically arranged; the blood line 4 is clamped between the inner arc surface 302 and the outer arc surface 2014, and the inner arc surface 302 is provided with a detection probe 303 for detecting the pressure of the blood line 4.
In order to make blood pipe 4 fix a position more accurately and improve pressure detection's precision, inner circular arc face 302 has seted up inner groove 304, and outer concave groove 2015 has been seted up to outer circular arc face 2014, and detecting probe 303 is located inner groove 304's flat surface, and blood pipe 4 is by the centre gripping between inner groove 304 and outer concave groove 2015 and flattened. The detection probe 303 can detect the flat tube wall of the blood tube 4, and compared with a circular tube wall, the influence of the elasticity of the tube wall on the pressure measurement result can be effectively reduced.
The fixing assembly 1 comprises a base plate 101, a fixing clamping block 102 and a central shaft 103 are arranged on the base plate 101, a rotating block 201 is rotatably connected with the central shaft 103, and an arc groove used for accommodating the rotating block 201 is formed in the fixing clamping block 102.
In order to lock the rotation angle of the rotating assembly 2 and prevent it from being displaced during use, the rotating assembly 2 is provided with a positioning device for fixing the rotation angle of the rotating assembly 2. The specific structure of the positioning device is as follows: the rotating block 201 is provided with a rotating hole 2011 and an inner cavity 2016, the rotating hole 2011 is rotatably provided with a rotating shaft 202, the rotating shaft 202 comprises a rotating frame 2022 and a shaft tube 2023, the shaft tube 2023 is rotatably sleeved on the central shaft 103, and the rotating frame 2022 is arranged in the inner cavity 2016;
a sliding block 203 is arranged in the rotating frame 2022, the upper side surface and the lower side surface of the inner cavity 2016 are provided with guide grooves 2018, the upper side surface and the lower side surface of the sliding block 203 are provided with guide strips 204, the guide strips 204 are arranged in the guide grooves 2018 in a sliding manner, the two sides of the sliding block 203 are provided with a first connecting plate 206 and a second connecting plate 207, the first connecting plate 206 is rotatably connected with the sliding block 203, the first connecting plate 206 is rotatably connected with the second connecting plate 207, an end shaft 2019 is arranged in the inner cavity 2016, and the second connecting plate 207 is rotatably connected with the rotating block 201 through the end shaft 2019; the connection position of the first connecting plate 206 and the second connecting plate 207 is pressed on the inner side surface of the rotating frame 2022, when the rotating frame 2022 rotates in one direction relative to the inner cavity 2016, the distance between the inner side surface of one side of the rotating frame 2022 and the slider 203 is reduced, the included angle between the first connecting plate 206 and the second connecting plate 207 is increased, and the slider 203 is driven by the first connecting plate 206 to slide backwards due to the rotary connection between the second connecting plate 207 and the rotating block 201; and when the rotating frame 2022 rotates in any direction relative to the inner cavity 2016, the driving slider 203 can slide backwards.
An end plate 2017 is arranged in the inner cavity 2016, the end plate 2017 is located at the rear end of the sliding block 203, a positioning spring 205 is arranged between the sliding block 203 and the end plate 2017, a positioning convex shaft 208 is arranged at the front end of the sliding block 203, a plurality of positioning holes 104 are formed in the central shaft 103, due to the existence of the positioning spring 205, when external force is not applied to the rotating shaft 202, the positioning convex shaft 208 can be inserted into the positioning holes 104, the sliding block 203 automatically returns to be located at the central position of the rotating frame 2022, and the positions of the first connecting plate 206 and the second connecting plate 207 on the two sides of the sliding block 203 are symmetrical.
For convenience of operation, a shifting rod 2021 is arranged at the upper end of the shaft tube 2023, a concave platform 2012 is arranged at the upper end of the rotating block 201, the shifting rod 2021 is arranged in the concave platform 2012 in a swinging mode, a protrusion 2013 used for limiting the swinging angle of the shifting rod 2021 is arranged on the concave platform 2012, and when the shifting rod 2021 swings to the position of the protrusion 2013, the rotating block 201 and the shifting rod 2021 can rotate together.
In order to improve the measurement accuracy, the number of the detection probes 303 is several. A plurality of cavities for accommodating the detection probes 303 are formed in the detection fixture block 301 and are arranged at equal intervals; the specific structure of the detection probe 303 comprises a top block 3031 which can slide in the cavity, and the outer end of the top block 3031 is provided with a bulge which can be pressed on the outer wall of the blood pipeline 4; the inner end of the top block 3031 is provided with a pressure sensor 3032, a detection spring 3033 is arranged between the pressure sensor 3032 and the cavity, the detection spring 3033 can enable the top block 3031 to be always pressed on the outer wall of the blood pipeline 4, and the pressure applied to the pressure sensor 3032 always corresponds to the pressure in the blood pipeline 4. The average of the measurement values of the plurality of detection probes 303 can make the detection precision of the device higher and more reliable.
A blood line pressure detection method of a blood separator comprises the following steps:
a. when the blood vessel is not in use, the rotating block 201 is located in the arc groove formed in the fixed fixture block 102 and used for accommodating the rotating block 201, and when the blood vessel is in use, the blood vessel 4 is placed between the rotating assembly 2 and the detecting assembly 3.
b. The rotating frame 2022 rotates relative to the inner cavity 2016 by rotating the shift lever 2021, the sliding block 203 is driven by the rotating frame 2022 through the first connecting plate 206 and the second connecting plate 207 to slide backwards, and the positioning protruding shaft 208 is pulled out of the positioning hole 104.
c. The rotary block 201 synchronously rotates along with the shifting rod 2021 until the outer arc 2014 of the rotary block 201 completely faces the inner arc 302 of the detection fixture block 301, at this time, relative to the non-use state, the rotary block 201 is rotated by 180 degrees, then the shifting rod 2021 is released, the rotary block 201 is fixed, at this time, the blood pipeline 4 is clamped between the outer arc 2014 and the inner arc 302, and the blood pipeline 4 is clamped between the inner groove 304 and the outer groove 2015 and is flattened.
d. The outer wall of blood pipe way 4 is pressed in to test probe 303 and detects its pressure, and test probe 303 can detect the flat pipe wall of blood pipe way 4, compares in circular pipe wall, can effectively reduce the influence of pipe wall elasticity to the pressure measurement result, gets the average of a plurality of test probe 303's measured value, can make this device's detection precision higher more reliable.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A blood line pressure detection system of a blood separator, comprising:
the device comprises a fixed assembly (1), wherein a rotating assembly (2) and a detecting assembly (3) are arranged on the fixed assembly (1);
the rotating assembly (2) comprises a rotating block (201), the rotating block (201) is rotatably connected with the fixed assembly (1), and the rotating block (201) is provided with an outer arc surface (2014);
the detection assembly (3) comprises a detection clamping block (301), the detection clamping block (301) is fixedly connected with the fixing assembly (1), the detection clamping block (301) is provided with an inner arc surface (302), and the inner arc surface (302) and the outer arc surface (2014) are concentrically arranged;
the blood pipeline (4) is clamped between the inner arc surface (302) and the outer arc surface (2014), and a detection probe (303) for detecting the pressure of the blood pipeline (4) is arranged on the inner arc surface (302).
2. The system of claim 1, wherein the pressure sensor is configured to detect a pressure in the blood line of the hemo-separator,
the blood tube (4) is clamped between the inner groove (304) and the outer groove (2015) and is flattened.
3. The blood line pressure detection system of a hemo-separator according to claim 1,
the fixing assembly (1) comprises a base plate (101), a fixing clamping block (102) and a central shaft (103) are arranged on the base plate (101), the rotating block (201) is rotatably connected with the central shaft (103), and an arc groove used for containing the rotating block (201) is formed in the fixing clamping block (102).
4. The system of claim 1, wherein the pressure sensor is configured to detect a pressure in the blood line of the hemo-separator,
the rotating assembly (2) is provided with a positioning device, and the positioning device is used for fixing the rotating angle of the rotating assembly (2).
5. The system of claim 4, wherein the pressure sensor is configured to detect a pressure in the blood line of the hemo-separator,
the rotating block (201) is provided with a rotating hole (2011) and an inner cavity (2016), the rotating hole (2011) is rotatably provided with a rotating shaft (202), the rotating shaft (202) comprises a rotating frame (2022) and a shaft barrel (2023), the shaft barrel (2023) is rotatably sleeved on the central shaft (103), and the rotating frame (2022) is arranged in the inner cavity (2016);
a sliding block (203) is arranged in the rotating frame (2022), the sliding block (203) is in sliding connection with the rotating block (201), a first connecting plate (206) and a second connecting plate (207) are arranged on two sides of the sliding block (203), the first connecting plate (206) is in rotating connection with the second connecting plate (207), and the second connecting plate (207) is in rotating connection with the rotating block (201); the joint of the first connecting plate (206) and the second connecting plate (207) is pressed on the inner side surface of the rotating frame (2022);
a positioning spring (205) is arranged between the rear end of the sliding block (203) and the rotating block (201), a positioning convex shaft (208) is arranged at the front end of the sliding block (203), a plurality of positioning holes (104) are formed in the central shaft (103), and the positioning convex shaft (208) can be inserted into the positioning holes (104).
6. The blood line pressure detection system of claim 5, wherein,
guide slot (2018) have been seted up to the upper and lower side of inner chamber (2016), conducting bar (204) have been seted up to the upper and lower side of slider (203), conducting bar (204) slide to set up in guide slot (2018).
7. The system of claim 5, wherein the pressure sensor is configured to detect a pressure in the blood line of the hemo-separator,
the upper end of the shaft tube (2023) is provided with a shifting lever (2021), the upper end of the rotating block (201) is provided with a concave table (2012), the shifting lever (2021) is arranged in the concave table (2012) in a swinging mode, and the concave table (2012) is provided with a protrusion (2013) used for limiting the swinging angle of the shifting lever (2021).
8. The system of claim 1, wherein the pressure sensor is configured to detect a pressure in the blood line of the hemo-separator,
the number of the detection probes (303) is several.
9. The system of claim 1, wherein the pressure sensor is configured to detect a pressure in the blood line of the hemo-separator,
a cavity for accommodating the detection probe (303) is formed in the detection clamping block (301);
the detection probe (303) comprises a top block (3031) which can slide in the cavity, and the outer end of the top block (3031) can be pressed on the outer wall of the blood pipeline (4); the inner end of the top block (3031) is provided with a pressure sensor (3032), and a detection spring (3033) is arranged between the pressure sensor (3032) and the cavity.
10. A blood line pressure detection method of a blood separator, which is based on the blood line pressure detection system of the blood separator as claimed in claim 7, and is characterized by comprising the following steps:
a. placing a blood line (4) between the rotating component (2) and the detecting component (3);
b. the rotating rod (2021) is rotated, the rotating frame (2022) rotates relative to the inner cavity (2016), the rotating frame (2022) drives the sliding block (203) to slide backwards through the first connecting plate (206) and the second connecting plate (207), and the positioning protruding shaft (208) is disengaged from the positioning hole (104);
c. the rotating block (201) synchronously rotates along with the shifting rod (2021) until the outer arc surface (2014) of the rotating block (201) is opposite to the inner arc surface (302) of the detection clamping block (301), and at the moment, the blood pipeline (4) is clamped between the outer arc surface (2014) and the inner arc surface (302);
d. the detection probe (303) is pressed on the outer wall of the blood pipeline (4) and detects the pressure of the blood pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307305.1A CN114659703B (en) | 2022-03-25 | 2022-03-25 | Blood line pressure detection system of blood separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307305.1A CN114659703B (en) | 2022-03-25 | 2022-03-25 | Blood line pressure detection system of blood separator |
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| Publication Number | Publication Date |
|---|---|
| CN114659703A true CN114659703A (en) | 2022-06-24 |
| CN114659703B CN114659703B (en) | 2024-04-30 |
Family
ID=82032461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210307305.1A Active CN114659703B (en) | 2022-03-25 | 2022-03-25 | Blood line pressure detection system of blood separator |
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| Country | Link |
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| CN (1) | CN114659703B (en) |
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| Publication number | Publication date |
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| CN114659703B (en) | 2024-04-30 |
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