CN111068133B - Hollow fiber membrane winding and compressing device - Google Patents
Hollow fiber membrane winding and compressing device Download PDFInfo
- Publication number
- CN111068133B CN111068133B CN201811230215.7A CN201811230215A CN111068133B CN 111068133 B CN111068133 B CN 111068133B CN 201811230215 A CN201811230215 A CN 201811230215A CN 111068133 B CN111068133 B CN 111068133B
- Authority
- CN
- China
- Prior art keywords
- hollow fiber
- fiber membrane
- rolling wheel
- winding
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1698—Blood oxygenators with or without heat-exchangers
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1621—Constructional aspects thereof
Abstract
The invention relates to a hollow fiber membrane winding and compressing device which comprises a wire winding mechanism, wherein the wire winding mechanism is provided with a wire winding part and a driving part, the wire winding part is used for arranging a hollow fiber membrane, and the driving part is used for driving the wire winding part to rotate; and a compression mechanism comprising a pressure supply part and a rolling wheel, wherein the pressure supply part is used for applying pressure to the rolling wheel; the wheel surface of the rolling wheel is parallel to the rotating shaft of the wire winding part; wherein the rolling wheel presses the hollow fiber membranes in a direction perpendicular to the rotation axis of the filament winding part when the pressure supply part applies pressure to the rolling wheel. The application discloses hollow fiber membrane winding compressor arrangement extrudees the hollow fiber membrane through compression mechanism, extrudees the circular cross section of the hollow fiber pipe in the hollow fiber membrane for non-circular cross section, and the hollow fiber membrane of constituteing with non-circular cross section hollow fiber pipe is applied to membrane oxygenator, reduces the blood precharge volume.
Description
Technical Field
The invention relates to the technical field of medical instrument products, in particular to a hollow fiber membrane winding and compressing device.
Background
The membrane oxygenator is a medical appliance for replacing lungs with cardioplegia, has the functions of regulating blood temperature and exchanging oxygen and carbon dioxide gas, is a necessary medical appliance for cardiovascular surgery, and is also a necessary medical appliance for treating acute respiratory diseases and waiting for lung transplantation. The principle of the membrane oxygenator is that venous blood in a human body is led out of the human body, passes through the membrane oxygenator, is subjected to temperature regulation and exchange of oxygen and carbon dioxide to become arterial blood, and then is returned to an arterial system of a patient to maintain the supply of oxygenated blood of visceral tissues of the human body. In the membrane oxygenator, temperature regulation is realized through a hollow fiber temperature changing membrane, and exchange of oxygen and carbon dioxide in blood is realized through a hollow fiber oxygen pressing membrane.
Please refer to fig. 1 and 2, which are a cross-sectional view of two adjacent hollow fiber tubes of a conventional hollow fiber membrane and a cross-sectional view of the hollow fiber tubes, respectively. A gap L1 is formed between two adjacent hollow fiber tubes 1, the hollow fiber tubes 1 are woven to form a sheet-shaped hollow fiber membrane 2 as shown in figure 2, and the sheet-shaped hollow fiber membrane 2 is wound into a roll-shaped hollow fiber membrane with a proper specification through a wire winding mechanism. Aiming at the improvement of the conventional hollow fiber membrane, a membrane structure and a membrane oxygenator are disclosed in the Chinese invention patent application number 201710817387.3, as shown in fig. 3, the section of the hollow fiber tube of the roll-shaped hollow fiber membrane 3 is a non-circular closed section (with a minimum circumcircle and a maximum inscribed circle), the precharge volume of blood can be effectively reduced, the blood flow pressure is reduced, and the blood is prevented from being damaged.
In view of the above, there is a need for a hollow fiber membrane winding compression device by which a circular cross-section of a conventional hollow fiber membrane is compressed into a non-circular closed cross-section.
Disclosure of Invention
The invention aims to provide a hollow fiber membrane winding and compressing device, which comprises:
the winding mechanism is provided with a winding part and a driving part, wherein the winding part is used for arranging the hollow fiber membrane, and the driving part is used for driving the winding part to rotate; and
the compression mechanism comprises a pressure supply part and a rolling wheel, wherein the pressure supply part is used for applying pressure to the rolling wheel; the wheel surface of the rolling wheel is parallel to the rotating shaft of the filament winding part; wherein the rolling wheel presses the hollow fiber membranes in a direction perpendicular to the rotation axis of the filament winding part when the pressure supply part applies pressure to the rolling wheel.
According to an embodiment of the application, the compression mechanism further comprises a flexible member; the flexible piece is coated on the wheel surface of the rolling wheel.
According to one embodiment of the present application, the flexible member includes a bag body and a fluid contained in the bag body; the bag body is coated on the wheel surface of the rolling wheel.
According to an embodiment of the present application, the rolling wheel is one of a rubber roller, a silica gel roller, and a polyurethane roller.
According to an embodiment of the present application, a pressure supply portion includes a pressure supply assembly and a pressing arm; the pressure supply assembly is connected to one end of the pressing arm, and the other end of the pressing arm is rotatably connected to the rolling wheel.
According to an embodiment of the present application, the pressure supply assembly includes a pressure regulating valve, a connecting line, and a cylinder; the pressure regulating valve is arranged on the connecting pipeline; the cylinder is communicated with one end of the connecting pipeline; one end of the pressing arm is linked with the air cylinder, and the other end of the pressing arm is rotatably connected with the rolling wheel.
According to an embodiment of the application, the pressure supply assembly further comprises a controller and a pressure sensor, wherein the controller is connected with the pressure regulating valve; the pressure sensor is arranged on the rolling wheel and is connected with the controller; the pressure sensor detects the pressure value of the rolling wheel and outputs the pressure value to the controller, and the controller controls the opening of the pressure regulating valve according to the pressure value.
According to an embodiment of the application, the pressure supply assembly comprises an elastic piece, the elastic piece is connected to one end of the pressing arm, and the other end of the pressing arm is rotatably connected with the rolling wheel.
According to one embodiment of the present application, a hold-down arm includes a connecting arm, a first hold-down arm, and a second hold-down arm; the pressure supply assembly is connected to the middle of the connecting support arm, two ends of the connecting support arm are respectively connected with one end of the first pressing support arm and one end of the second pressing support arm, and the other end of the first pressing support arm and the other end of the second pressing support arm are respectively rotatably connected to two ends of the rolling wheel.
According to one embodiment of the present application, the wire winding portion includes a first wire winding clamp seat and a second wire winding clamp seat that are disposed opposite to each other, and the first wire winding clamp and the second wire winding clamp have a gap therebetween; the hollow fiber membrane is wound in the space between the first wire winding clamp seat and the second wire winding clamp seat; the driving part drives the first wire winding clamp seat and the second wire winding clamp seat to rotate.
Compared with the prior art, the application can obtain the following technical effects:
the utility model provides a hollow fiber membrane winding compression device extrudees the hollow fiber membrane through compression mechanism, extrude hollow fiber pipe circular cross section in the hollow fiber membrane for non-circular cross section, the hollow fiber membrane that will constitute by non-circular cross section hollow fiber pipe is applied to membrane oxygenator, because the interval between the adjacent hollow fiber pipe reduces in the hollow fiber membrane, the blood flow space reduces, effectively reduce blood prefill volume, reduce blood pressure and avoid blood to suffer destruction. Furthermore, in order to avoid the rigid element from pressing the hollow fiber membrane and causing damage to the hollow fiber tube in the hollow fiber membrane, the compression mechanism is further provided with a flexible piece, or the rolling wheel is arranged as one of a rubber roller, a silica gel roller and a polyurethane roller, so as to flexibly press the hollow fiber membrane.
Drawings
FIG. 1 is a schematic cross-sectional view of two adjacent hollow fiber tubes of the background art;
FIG. 2 is a structural view of a sheet-like hollow fiber membrane of the background art;
FIG. 3 is a structural view of a prior art rolled hollow fiber membrane having a non-circular closed cross section of a hollow fiber tube;
FIG. 4 is a schematic front cross-sectional view of a hollow fiber membrane wound compression device according to an embodiment of the present application;
FIG. 5 is a schematic front cross-sectional view of a hollow fiber membrane wound compression device according to another embodiment of the present application;
FIG. 6 is a schematic side view of a hollow fiber membrane wound compression device according to one embodiment of the present application;
FIG. 7 is a cross-sectional view of an adjacent non-circular cross-section hollow fiber tube according to an embodiment of the present application;
fig. 8 is a cross-sectional view of the flexible member wrapping the rolling wheel tread in the compression mechanism according to an embodiment of the present application.
Detailed Description
In the following description, numerous implementation details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these implementation details should not be taken to limit the application. That is, in some embodiments of the present application, such practical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another.
Fig. 4 to 6 are schematic sectional views illustrating a hollow fiber membrane winding and compressing device according to an embodiment of the present invention, and fig. 4 and 5 are schematic side views illustrating the hollow fiber membrane winding and compressing device according to the embodiment of the present invention. As shown in the drawings, the present embodiment provides a hollow fiber membrane winding and compressing device, in which a compression mechanism 20 is mainly used to press a rolled hollow fiber membrane 3 on a filament winding mechanism 10, so that the cross section of a hollow fiber tube 1 in the rolled hollow fiber membrane 3 is changed from a circular cross section to a non-circular cross section, such as an elliptical cross section, when the rolled hollow fiber membrane 3 is applied to a membrane oxygenator, in the rolled hollow fiber membrane 3 having a non-circular cross section of the hollow fiber tube 1, gaps between a plurality of hollow fiber tubes 1 are reduced, and the priming volume of blood can be effectively reduced.
Referring to fig. 4 to 6, the hollow fiber membrane winding and compressing device of the present embodiment includes a filament winding mechanism 10 and a compressing mechanism 20. The winding mechanism 10 is used for winding and unwinding the sheet-like hollow fiber membrane 2 to wind the sheet-like hollow fiber membrane 2 into the roll-like hollow fiber membrane 3. The winding mechanism 10 includes a winding portion 101 and a driving portion 102, the winding portion 101 has a rotation axis 1011, the driving portion 102 drives the winding portion 101 to rotate around the rotation axis 1011, and the sheet-like hollow fiber membrane 2 is continuously wound around the winding portion 101 during the rotation of the winding portion 101. The compressing mechanism 20 is disposed on the filament winding mechanism 10 and includes a pressure supply portion 201 and a rolling wheel 202, the pressure supply portion 201 applies pressure to the rolling wheel 202, the wheel surface of the rolling wheel 202 is disposed parallel to the rotation axis 1011 of the filament winding portion 101, and when the pressure supply portion 201 applies pressure to the rolling wheel 202, the rolling wheel 202 presses the rolled hollow fiber membrane 3 wound on the filament winding portion 101 in the direction perpendicular to the rotation axis 1011 of the filament winding portion 101. The pressure supply unit 201 may apply pressure to the rolling wheel 202 after the sheet-shaped hollow fiber membrane 2 is completely wound, the rolling wheel 202 presses the rolled hollow fiber membrane 3 wound around the filament winding unit 101, the pressure supply unit 201 may apply pressure to the rolling wheel 202 during the winding process of the sheet-shaped hollow fiber membrane 2, and the rolling wheel 202 presses the rolled hollow fiber membrane 3 wound around the filament winding unit 101. When the filament winding mechanism 10 completes the winding of the sheet-shaped hollow fiber membrane 2, the sheet-shaped hollow fiber membrane 2 is wound into the rolled hollow fiber membrane 3 conforming to the specification, the driving part 102 drives the filament winding part 101 to rotate continuously around the rotating shaft 1011, during the rotation, the pressure supply part 201 continuously applies pressure to the rolling wheel 202, the rolling wheel 202 continuously presses the rolled hollow fiber membrane 3, and the rolling wheel 202 presses the rolled hollow fiber membrane 3 wound on the filament winding part 101, at least the multilayer rolled hollow fiber membrane 3 near the surface layer of the rolled hollow fiber membrane 3 is compressed, the cross section of the hollow fiber tube 1 in the multilayer rolled hollow fiber membrane 3 near the surface layer of the rolled hollow fiber membrane 3 is pressed from a circle to a non-circle, as shown in fig. 7, which is a cross section view of the adjacent non-circle cross-section hollow fiber tube 1, the cross section of the hollow fiber tube 1 is pressed from a circle to an ellipse, and the gap L2 between the adjacent two hollow fiber tubes 1 with non-circle cross sections is smaller than the gap L1 between the adjacent two hollow fiber tubes with circle cross sections. When the driving unit 102 drives the winding unit 101 to rotate around the rotation axis 1011, and the sheet-like hollow fiber membranes 2 are stacked and wound around the winding unit 101 during the rotation, the pressure supply unit 201 continuously applies pressure to the rolling wheel 202, the rolling wheel 202 sequentially presses each of the layers of the rolled hollow fiber membranes 3 wound around the winding unit 101 to press the cross section of the hollow fiber tube 1 in each of the layers of the rolled hollow fiber membranes 3 from a circular shape to a non-circular shape, and when the sheet-like hollow fiber membranes 2 are pressed during the winding process, each of the layers of the rolled hollow fiber membranes 3 can be compressed, and the thickness of the rolled hollow fiber membranes 3 wound around the winding unit 101 increases as the sheet-like hollow fiber membranes 2 are wound, and the pressure supply unit 201 of the compressing mechanism 20 is continuously retracted by the reverse thrust of the rolled hollow fiber membranes 3 to match the thickness of the rolled hollow fiber membranes 3.
In order to uniformly press the rolled hollow fiber membranes 3 while preventing the hollow fiber tubes 1 of the rolled hollow fiber membranes 3 from being damaged by the pressure directly generated by the rigid elements when the rolling wheel 202 presses the rolled hollow fiber membranes 3, in one embodiment, the compressing mechanism 20 further includes a flexible member 203. Please refer to fig. 8, which is a cross-sectional view of the flexible member 203 of the compressing mechanism 20 wrapped around the wheel surface of the rolling wheel 202. The compressing mechanism 20 further comprises a flexible member 203, and the flexible member 203 is wrapped on the wheel surface of the rolling wheel 202. In one example, the flexible member 203 includes a bag 2031 and a fluid 2032 filled in the bag 2031, the bag 2031 covers the surface of the rolling wheel 202, wherein the fluid 2032 may be a liquid such as water or a gas such as air, but the disclosure is not limited thereto. In another example, the flexible member 203 may be a soft rubber body, the soft rubber body is attached to the wheel surface of the rolling wheel 202, and the soft rubber body may be rubber or silica gel with a suitable thickness. When the rolling wheel 202 presses the rolled hollow fiber membrane 3 wound around the filament winding part 101, the pressure applied by the rolling wheel 202 perpendicular to the rotation axis 1011 of the filament winding part 101 is uniformly dispersed by the flexible member 203 and uniformly acts on the rolled hollow fiber membrane 3, so as to flexibly and uniformly compress the rolled hollow fiber membrane 3 and prevent the rolled hollow fiber membrane 3 from being damaged by the pressing action of the rolling wheel 202.
In another embodiment, the rolling wheel 202 is one of a rubber roller, a silica gel roller, and a polyurethane roller, and when the pressure supply unit 201 applies pressure to the rubber roller, the silica gel roller, or the polyurethane roller, an interaction force is generated between the rubber roller, the silica gel roller, or the polyurethane roller and the rolled hollow fiber membrane 3, and the rolling wheel 202 flexibly presses the rolled hollow fiber membrane 3 due to elasticity of the rubber roller, the silica gel roller, or the polyurethane roller at normal temperature.
Referring to fig. 4 to 5, the pressure supply part 201 includes a pressure supply assembly 2011 and a pressing arm 2012, and the pressure supply assembly 2011 and the pressing arm 2012 are both disposed on the filament winding mechanism 10. The pressure supply assembly 2011 is connected to one end of the pressing arm 2012, and the other end of the pressing arm 2012 is rotatably connected to the rolling wheel 202, wherein the pressure supply assembly 2011 applies pressure to the pressing arm 2012, and the pressing arm 2012 applies pressure to the rolling wheel 202. When the driving part 102 drives the wire winding part 101 to rotate, the rolled hollow fiber membrane 3 synchronously rotates with the wire winding part 101, when the rolling wheel 202 applies pressure to the rolled hollow fiber membrane 3 wound on the wire winding part 101, a friction force is generated between the rolling wheel 202 and the rolled hollow fiber membrane 3 due to relative motion between the rolling wheel 202 and the rolled hollow fiber membrane 3, while the other end of the pressing arm 2012 is rotatably connected to the rolling wheel 202, under the action of the friction force, the rolling wheel 202 rotates, and the rotation direction of the rolling wheel 202 is opposite to the rotation direction of the wire winding part 101. When the rolling wheel 202 is rotatably connected to the other end of the pressing arm 2012, the frictional acting force generated between the rolling wheel 202 and the rolled hollow fiber membrane 3 is far smaller than the frictional acting force generated between the rolling wheel 202 and the rolled hollow fiber membrane 3 when the rolling wheel 202 is fixedly connected to the other end of the pressing arm 2012, so that the hollow fiber tube 1 of the rolled hollow fiber membrane 3 is effectively prevented from being damaged due to the action of larger frictional force when the frictional force is too large. Further, as shown in fig. 4 and 5, the pressing arm 2012 includes a connecting arm 20121, a first pressing arm 20122 and a second pressing arm 20123, and the first pressing arm 20122 and the second pressing arm 20123 are disposed on the filament winding mechanism 10 through a guide seat 20124; the pressure supply assembly 2011 is connected to the middle of the connecting arm 20121, one end of the connecting arm 20121 is connected to one end of the first pressing arm 20122, the other end of the connecting arm 20121 is connected to one end of the second pressing arm 20123, the other end of the first pressing arm 20122 is rotatably connected to one end of the rolling wheel 202, and the other end of the second pressing arm 20123 is rotatably connected to the other end of the rolling wheel 202. Since the pressure supply part 201 applies pressure to the middle of the connecting arm 20121, the distance from the first pressing arm 20122 to the middle of the connecting arm 20121 is equal to the distance from the second pressing arm 20123 to the middle of the connecting arm 20121, according to the equal-arm lever principle, the pressure applied by the first pressing arm 20122 to the rolling wheel 202 is equal to the pressure applied by the second pressing arm 20123 to the rolling wheel 202, so that the pressing force applied by the rolling wheel 202 to the rolled hollow fiber membrane 3 is more uniform, and uniform compression of the rolled hollow fiber membrane 3 is realized.
In another embodiment, referring to fig. 4, the pressure supply assembly 2011 includes a pressure regulating valve 20111, a connecting line 20112 and a cylinder 20113, wherein the pressure regulating valve 20111 is disposed on the connecting line 20112; the cylinder 20113 is communicated with one end of the connecting pipeline 20112; one end of the pressing arm 2012 is linked to the air cylinder 20113, and the other end of the pressing arm 2012 is rotatably connected to the rolling wheel 202. One end of the connecting pipeline 20112 is connected with the cylinder 20113, the other end of the connecting pipeline is connected with an external air source, by adjusting the pressure regulating valve 20111 to a proper pressure, for example, less than or equal to 0.5kg/cm2, the cylinder 20113 generates a pressure with a proper magnitude and applies the pressure to one end of the pressing arm 2012, the other end of the pressing arm 2012 applies the pressure to the rolling wheel 202, and the rolling wheel 202 presses the rolled hollow fiber membrane 3 along a direction perpendicular to the rotating shaft 1011 of the winding part 101. In another embodiment, the pressure supply assembly 2011 further includes a controller (not shown) and a pressure sensor 20114, the controller is disposed on the wire winding mechanism 10, and the controller is connected to the pressure regulating valve 20111; pressure sensor 20114 sets up on rolling wheel 202, and connect the controller, and wherein pressure sensor 20114 is used for detecting rolling wheel 202 and applies the pressure value to roll-like hollow fiber membrane 3 to transmit the pressure value that detects to the controller, the controller is according to the aperture of pressure value adjustment air-vent valve 20111, so can adjust the pressure magnitude that compressing mechanism 20 applyed for roll-like hollow fiber membrane 3 according to actual conditions.
Referring to fig. 5, in another embodiment of the present application, the pressure supply assembly 2011 includes an elastic member 20115, the elastic member 20115 is connected to one end of the pressing arm 2012, and the other end of the pressing arm 2012 is rotatably connected to the rolling wheel 202. In a specific implementation, the elastic member 20115 may be a spring, such as a coil spring or a truncated cone spiral spring, and when the elastic member 20115 is a spring, the spring is sleeved on the elastic cylindrical colloid 20116, and the elastic cylindrical colloid 20116 plays a guiding role in compressing the spring; alternatively, the resilient member 20115 may be a resilient elastomer 20116, such as a thermoplastic elastomer, and the resilient elastomer 20116 is connected to one end of the pressing arm 2012.
Referring to fig. 4-5, in another embodiment, the winding portion 101 includes a first winding clamp seat 1012 and a second winding clamp seat 1013 disposed opposite to each other, the first winding clamp seat 1012 and the second winding clamp seat 1013 having a spacing 1014; the sheet-shaped hollow fiber membrane 2 is wound in the space 1014 between the first wire winding clamp seat 1012 and the second wire winding clamp seat 1013; the driving unit 102 drives the first winding jig base 1012 and the second winding jig base 1013 to rotate. The driving part 102 comprises a motor fixing seat 1021, a servo motor 1022, a bearing fixing seat 1023, a compression elastic component 1024 and a driven shaft 1025; the servo motor 1022 is fixed to the motor fixing seat 1021 and connected to the first winding clamp seat 1012, the bearing fixing seat 1023 is fixed to the second winding clamp seat 1013, one end of the driven shaft 1025 penetrates through the bearing fixing seat 1023 and is connected to the second winding clamp seat 1013, the other end of the driven shaft 1025 abuts against the elastic pressing part 1024, and the elastic pressing part 1024 is a spring.
When the pressure supply section 201 applies pressure to the rolling wheel 202 after the sheet-shaped hollow fiber membranes 2 are completely rolled, and the rolling wheel 202 presses the rolled hollow fiber membranes 3 wound on the filament winding section 101, the hollow fiber membrane winding compression device of the present application operates in the following principle: the inner partition plate 4 is installed in a space 1024 between the first winding clamp seat 1012 and the second winding clamp seat 1023, the starting end of the sheet-shaped hollow fiber membrane 2 is drawn and wound on the inner partition plate 4, the servo motor 1022 drives the first winding clamp seat 1012 to rotate, the first winding clamp seat 1012 drives the inner partition plate 4 to rotate, the second winding clamp seat 1013 is driven by the inner partition plate 4 to rotate around the driven shaft 1025, the sheet-shaped hollow fiber membrane 2 is wound on the inner partition plate 4, after the sheet-shaped hollow fiber membrane 2 is wound into a roll-shaped hollow fiber membrane 3 according to a proper specification, the driving part 102 continues to drive the first winding clamp seat 1012 and the second winding clamp seat 1013 to rotate, and the roll-shaped hollow fiber membrane 3 continues to rotate. If the pressure supply part 201 comprises the air cylinder 20113, the connecting pipeline 20112 is communicated with an external air source, the pressure of the pressure regulating valve 20111 is regulated, the air cylinder 20113 is actuated, the push rod of the air cylinder 20113 pushes the middle part of the connecting support arm 20121, the thrust of the air cylinder 20113 acts on the two ends of the rolling wheel 202 through the first pressing support arm 20122 and the second pressing support arm 20123, the wheel surface of the rolling wheel 202 is vertically downwards wound on the rolled hollow fiber membrane 3 of the inner partition plate 4, the rolled hollow fiber membrane 3 synchronously rotates along with the first wire winding clamp seat 1012 and the second wire winding clamp seat 1013, the rolling wheel 202 rotates along the direction opposite to the rotating direction of the rolled hollow fiber membrane 3, and during the rotation of the rolled hollow fiber membrane 3 and the rolling wheel 202, the rolling wheel 202 presses at least the multilayer rolled hollow fiber membrane 3 close to the surface layer of the rolled hollow fiber membrane 3, and extrudes the circular section of the hollow fiber tube 1 in the multilayer rolled hollow fiber membrane 3 close to the surface layer of the rolled hollow fiber membrane 3 into a non-circular section. If the pressure supply unit includes the elastic member 20115, the elastic member 20115 is in a compressed state, the elastic member 20115 generates an elastic force for recovering a free state, the elastic force of the elastic member 20115 acts on the middle portion of the connecting arm 20121, the elastic force of the elastic member 20115 acts on the two ends of the rolling wheel 202 through the first pressing arm 20122 and the second pressing arm 20123, the rolling wheel 202 abuts against the rolled hollow fiber membrane 3 under the elastic force of the elastic member 20115, and the rolling wheel 202 vertically presses the rolled hollow fiber membrane 3. The structure and operation of the winding mechanism 10 and the pressing process of the rolled hollow fiber membranes 3 by the rolling wheel 202 are the same as those described above, and are not described herein again.
When the pressure supply section 201 applies pressure to the rolling wheel 202 during the process of winding the sheet-shaped hollow fiber membrane 2, and the rolling wheel 202 presses each layer of the rolled hollow fiber membrane 3 wound on the filament winding section 101, the operation principle of the hollow fiber membrane winding and compressing apparatus of the present application is as follows: the inner partition plate 4 is installed in the space 1014 between the first winding clamp seat 1012 and the second winding clamp seat 1013, the starting end of the sheet-like hollow fiber membrane 2 is pulled and wound on the inner partition plate 4, the servo motor 1022 drives the first winding clamp seat 1012 to rotate, the first winding clamp seat 1012 drives the inner partition plate 4 to rotate, the second winding clamp seat 1013 drives the inner partition plate 4 to rotate around the driven shaft 1025, and the sheet-like hollow fiber membrane 2 starts to be laminated and wound on the inner partition plate 4. If the pressure supply part 201 comprises the air cylinder 20113, the connecting pipeline 20112 is communicated with an external air source, the pressure of the pressure regulating valve 20111 is regulated, the air cylinder 20113 is actuated, the push rod of the air cylinder 20113 pushes the middle part of the connecting support arm 20121, the thrust of the air cylinder 20113 acts on the two ends of the rolling wheel 202 through the first pressing support arm 20122 and the second pressing support arm 20123, the wheel surface of the rolling wheel 202 vertically presses and downwards the first layer of rolling hollow fiber membrane 3 wound on the inner partition plate 4, the first layer of rolling hollow fiber membrane 3 synchronously rotates along with the first wire winding clamp seat 1012 and the second wire winding clamp seat 1013, the rolling wheel 202 rotates along the direction opposite to the rotating direction of the first layer of rolling hollow fiber membrane 3, the first layer of the rolled hollow fiber membrane 3 is extruded, the circular section of the hollow fiber tube 1 in the first layer of the rolled hollow fiber membrane 3 is extruded into a non-circular section, when one layer of the rolled hollow fiber membrane 3 is wound on the inner partition plate 4, the rolling wheel 202 can extrude the layer and the rolled hollow fiber membrane 3 stacked below the layer, the winding thickness of the rolled hollow fiber membrane 3 is increased along with the increase of the number of layers of the rolled hollow fiber membrane 3 on the inner partition plate 4, and the push rod of the air cylinder 20113 gradually retracts along with the increase of the number of the layers of the rolled hollow fiber membrane 3 under the reverse acting force of the rolled hollow fiber membrane 3 until the winding and the bundling of the sheet hollow fiber membrane 2 are completed. If the pressure supply unit 201 includes the elastic member 20115, the elastic member 20115 is in a compressed state, the elastic member 20115 generates an elastic force for recovering the free state, the elastic force of the elastic member 20115 acts on the middle portion of the connecting arm 20121, the elastic force of the elastic member 20115 acts on both ends of the rolling wheel 202 through the first pressing arm 20122 and the second pressing arm 20123, the rolling wheel 202 abuts against the rolled hollow fiber membrane 3 under the elastic force of the elastic member 20115, the rolling wheel 202 vertically presses the rolled hollow fiber membrane 3, the thickness of the rolled hollow fiber membrane 3 wound on the filament winding unit 101 is continuously increased as the rolled hollow fiber membrane 3 is continuously wound, and the elastic member 20115 is continuously compressed. The structure and operation of the filament winding mechanism 10 and the pressing process of the rolling wheel 202 for each layer and the roll-shaped hollow fiber membranes 3 stacked under the layer are the same as described above, and will not be described again. The compression effect of the rolled hollow fiber membrane 3 is better when the compression mechanism 20 compresses the rolled hollow fiber membrane 3 for each layer of the rolled hollow fiber membrane 3 than when the compression mechanism 20 compresses the rolled hollow fiber membrane 3 after the sheet-like hollow fiber membrane 2 is completely wound.
To sum up, the hollow fiber membrane winding compression device of this application extrudees the hollow fiber membrane through compression mechanism, extrudees the hollow fiber pipe circular cross-section of hollow fiber membrane for non-circular cross-section, and the interval between the adjacent hollow fiber pipe in the hollow fiber membrane reduces, therefore is applied to the membrane oxygenator when the hollow fiber membrane that has non-circular cross-section hollow fiber pipe, reduces the blood precharge volume, reduces blood pressure and avoids blood to suffer destruction. In order to avoid the rigid element from extruding the hollow fiber membrane and damaging the hollow fibers in the hollow fiber membrane, the compression mechanism is also provided with a flexible piece, or the rolling wheel is set to be one of a rubber roller, a silica gel roller and a polyurethane roller, so that the hollow fiber membrane is flexibly pressed.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.
The above description is only an embodiment of the present application, and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims (4)
1. A hollow fiber membrane wound compression device, comprising: the winding mechanism is provided with a winding part and a driving part, wherein the winding part is used for arranging the hollow fiber membrane, and the driving part is used for driving the winding part to rotate; and a compacting mechanism comprising a pressure supply for applying pressure to the rolling wheels and rolling wheels; the wheel surface of the rolling wheel is parallel to the rotating shaft of the wire winding part; wherein the rolling wheel presses the hollow fiber membranes in a direction perpendicular to a rotation axis of the filament winding part when the pressure supply part applies pressure to the rolling wheel;
the compression mechanism further comprises a flexible member; the flexible piece is coated on the wheel surface of the rolling wheel;
the flexible piece comprises a bag body and fluid arranged in the bag body; the bag body is coated on the wheel surface of the rolling wheel;
the rolling wheel is one of a rubber roller, a silica gel roller and a polyurethane roller;
the pressure supply part comprises a pressure supply assembly and a pressing arm; the pressure supply assembly is connected to one end of the pressing arm, and the other end of the pressing arm is rotatably connected to the rolling wheel;
the pressure supply assembly comprises a pressure regulating valve, a connecting pipeline and a cylinder; the pressure regulating valve is arranged on the connecting pipeline; the cylinder is communicated with one end of the connecting pipeline; one end of the pressing arm is linked with the air cylinder, and the other end of the pressing arm is rotationally connected with the rolling wheel;
the pressure supply assembly further comprises a controller and a pressure sensor, and the controller is connected with the pressure regulating valve; the pressure sensor is arranged on the rolling wheel and is connected with the controller; the pressure sensor detects the pressure value of the rolling wheel and outputs the pressure value to the controller, and the controller controls the opening degree of the pressure regulating valve according to the pressure value.
2. The wound hollow fiber membrane compression device of claim 1, wherein the pressure supply assembly comprises an elastic member connected to one end of the pressing arm, and the other end of the pressing arm is rotatably connected to the rolling wheel.
3. The hollow fiber membrane wound compression device of claim 1, wherein the hold-down arm comprises a connecting arm, a first hold-down arm, and a second hold-down arm; the pressure supply assembly is connected to the middle of the connecting support arm, the two ends of the connecting support arm are respectively connected with one end of the first pressing support arm and one end of the second pressing support arm, and the other end of the first pressing support arm and the other end of the second pressing support arm are respectively and rotatably connected to the two ends of the rolling wheel.
4. The hollow fiber membrane winding compression device according to claim 1, wherein the winding portion comprises a first winding clamp seat and a second winding clamp seat which are oppositely arranged, and the first winding clamp seat and the second winding clamp seat are spaced; the hollow fiber membrane is wound in the space between the first wire winding clamp seat and the second wire winding clamp seat; the driving part drives the first wire winding clamp seat and the second wire winding clamp seat to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230215.7A CN111068133B (en) | 2018-10-22 | 2018-10-22 | Hollow fiber membrane winding and compressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230215.7A CN111068133B (en) | 2018-10-22 | 2018-10-22 | Hollow fiber membrane winding and compressing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111068133A CN111068133A (en) | 2020-04-28 |
| CN111068133B true CN111068133B (en) | 2022-11-04 |
Family
ID=70309837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811230215.7A Active CN111068133B (en) | 2018-10-22 | 2018-10-22 | Hollow fiber membrane winding and compressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111068133B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000102985A (en) * | 1998-09-28 | 2000-04-11 | Toyota Autom Loom Works Ltd | Filament winding apparatus |
| CN101591840A (en) * | 2009-05-31 | 2009-12-02 | 广东溢达纺织有限公司 | Pneumatic wire clamp |
| CN102090343A (en) * | 2009-12-15 | 2011-06-15 | 程建民 | Flexible milking cup |
| CN202070999U (en) * | 2011-04-07 | 2011-12-14 | 江阴索利德数控科技有限公司 | Feeding adjusting mechanism of full-automatic pipe cutting machine |
| JP5776784B2 (en) * | 2011-11-04 | 2015-09-09 | ニプロ株式会社 | Yarn bundle body packaging method and apparatus, and hollow fiber bundle production method and apparatus |
-
2018
- 2018-10-22 CN CN201811230215.7A patent/CN111068133B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111068133A (en) | 2020-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5281112A (en) | Self regulating blood pump with controlled suction | |
| US5711296A (en) | Continuous positive airway pressure system | |
| US8747084B2 (en) | Peristaltic pump | |
| US20030124009A1 (en) | Hydrophilic polymer actuators | |
| CA2117061A1 (en) | Sealing means for endotracheal tubes | |
| US5222880A (en) | Self-regulating blood pump | |
| CN111068133B (en) | Hollow fiber membrane winding and compressing device | |
| CN105084083B (en) | A kind of parallel expansion film covering device and technique of easy wide cut ultrathin membrane | |
| US20110245806A1 (en) | Reinforced multi-lumen catheter and methods for making same | |
| CN114362054B (en) | Multi-cable active unreeling type laying equipment | |
| CN110435188B (en) | Continuous production system and process for glass fiber pipeline | |
| TW201121865A (en) | Prepreg winding method and apparatus thereof | |
| CN208326848U (en) | A kind of diaphragm winding flattening device | |
| JP5042059B2 (en) | Aging device and aging method for flexible tube for endoscope | |
| CN116274756B (en) | Winding equipment for producing composite pipeline and control method thereof | |
| CN210260609U (en) | EVA glued membrane automatic winding device | |
| CN114225182A (en) | Interventional catheter fixing device for cardiovascular and cerebrovascular treatment | |
| CN210635926U (en) | Closely-attached damping foam attaching equipment | |
| CN106044324B (en) | For manufacturing the up- coiler of lap spool and method for winding lap | |
| CN101700841B (en) | Winding device of activated carbon fiber filter | |
| KR20190110664A (en) | the double pressing roller of automated prepreg placement apparatus for composite materials | |
| CN116022592B (en) | Automatic die-cutting product receiving device and receiving method | |
| CN116834420B (en) | Fabric compounding device based on pre-shrinking structure | |
| CN219688820U (en) | Uninterrupted winding equipment for PVC film | |
| CN208617109U (en) | It is a kind of with gas extrusion alarm the anti-optical fiber that extends out around winding apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |