CN112755291A - Metal tube diversion temperature changing device and oxygenator for ECMO - Google Patents
Metal tube diversion temperature changing device and oxygenator for ECMO Download PDFInfo
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- CN112755291A CN112755291A CN202011608860.5A CN202011608860A CN112755291A CN 112755291 A CN112755291 A CN 112755291A CN 202011608860 A CN202011608860 A CN 202011608860A CN 112755291 A CN112755291 A CN 112755291A
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- metal
- temperature
- changing
- pipe
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- 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
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
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- 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
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/367—Circuit parts not covered by the preceding subgroups of group A61M1/3621
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Cardiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
The invention discloses a metal pipe flow-guide temperature change device, which comprises a metal pipe flow-guide temperature change device and a metal pipe flow-guide temperature change structure, wherein the metal pipe flow-guide temperature change device comprises a core shaft body and the metal pipe flow-guide temperature change structure, the metal pipe flow-guide temperature change structure comprises a plurality of metal flow-guide temperature change pipes, each metal flow-guide temperature change pipe is spirally wound on the outer wall of the core shaft body, the plurality of metal flow-guide temperature change pipes are sequentially arranged at intervals along the peripheral direction of the core shaft body, and a flow-guide channel is formed between every; the invention also discloses an oxygenator for ECMO. This application is as metal pipe water conservancy diversion alternating temperature structure of blood water conservancy diversion usefulness, it is direct to wind around locating core axis body outer wall and forming through a plurality of metal water conservancy diversion alternating temperature pipe helices for the space between core axis body and the metal pipe water conservancy diversion alternating temperature structure obtains make full use of, thereby it is littleer to make whole metal pipe water conservancy diversion temperature-sensing device volume, when its cooperation forms the oxygenator for the ECMO, can make the whole volume of oxygenator more small and exquisite, the medical application of being convenient for.
Description
Technical Field
The invention relates to the technical field of oxygenators, in particular to a metal tube diversion temperature changing device and an oxygenator for ECMO.
Background
A patent entitled "spiral flow guide integrated membrane oxygenator," publication No. CN208893292U, "discloses a spiral flow guide integrated membrane oxygenator. An oxygenator for ECMO is disclosed in a patent publication No. CN111744065A entitled "oxygenating filament membrane material, oxygenating unit, and oxygenator for ECMO. In order to prevent blood from directly flowing to the lower part of the oxygenator along the shortest path under the self gravity and flowing out from the outlet, the utilization rate of the temperature changing membrane on the upper part of the oxygenator is greatly reduced, in the two oxygenators, blood flow guiding is realized through the spiral flow guide groove arranged on the inner wall of the flow guide plate of the core shaft part, the core shaft part comprises the core shaft part and the flow guide body, the flow guide plate of the flow guide body is in a hollow cylindrical shape, the flow guide plate is sleeved outside the core shaft part, the structure also indirectly increases the overall volume of the oxygenator, the pre-charging amount is increased, the forming process of arranging the spiral flow guide groove on the inner wall of the flow guide plate is.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a metal tube diversion temperature changing device and an oxygenator for ECMO.
The invention discloses a metal pipe diversion temperature changing device, which comprises:
a core shaft body; and
the metal pipe flow guide temperature changing structure comprises a plurality of metal flow guide temperature changing pipes; each metal diversion temperature-changing pipe is spirally wound on the outer wall of the core shaft body, a plurality of metal diversion temperature-changing pipes are sequentially arranged at intervals along the peripheral direction of the core shaft body, and a diversion channel is formed between every two adjacent metal diversion temperature-changing pipes.
According to one embodiment of the invention, the metal diversion temperature change pipe is in a hollow pipe shape.
According to one embodiment of the invention, the device further comprises a metal pipe temperature changing structure; the metal pipe temperature changing structure is sleeved outside the metal pipe flow guiding temperature changing structure.
According to one embodiment of the invention, the metal tube temperature changing structure comprises at least two metal temperature changing layers; at least two metal temperature change layers are sleeved from inside to outside in sequence.
According to an embodiment of the present invention, the metal temperature changing layer includes a plurality of metal temperature changing pipes, the plurality of metal temperature changing pipes are sequentially arranged at intervals, and the metal temperature changing pipes in two adjacent metal temperature changing layers are arranged in a mutually intersecting manner, so that the plurality of metal temperature changing pipes in two adjacent metal temperature changing layers are matched to form a plurality of flow passing pores.
According to one embodiment of the present invention, the plurality of flow passage apertures are different in size.
According to one embodiment of the invention, the size of the plurality of flow through holes gradually changes from large to small along the flowing direction of the metal diversion temperature change pipe.
According to one embodiment of the present invention, the metal temperature change tube is a hollow tube.
According to an embodiment of the present invention, the metal diversion temperature changing pipe and the metal temperature changing pipe are made of stainless steel.
According to one embodiment of the present invention, the surfaces of the metal diversion temperature change tube and the metal temperature change tube are provided with medical coatings.
According to one embodiment of the present invention, a mandrel body includes a first end and a second end integrally connected to the first end; the diameter of the second end is larger than that of the first end; the metal diversion temperature changing pipe is spirally wound on the outer wall of the second end part.
An oxygenator for ECMO, the metal tube diversion temperature changing device thereof.
The beneficial effect of this application lies in: as the metal pipe water conservancy diversion alternating temperature structure of blood water conservancy diversion usefulness, direct through a plurality of metal water conservancy diversion alternating temperature pipe spiral wind locate the core axis body outer wall and form for the space between core axis body and the metal pipe water conservancy diversion alternating temperature structure obtains make full use of, thereby makes whole metal pipe water conservancy diversion temperature-changing device volume littleer, when its cooperation forms the oxygenator for the ECMO, can make the whole volume of oxygenator more small and exquisite, the medical application of being convenient for. Moreover, heat exchange water can be discharged from the metal diversion temperature changing pipe, so that the metal diversion temperature changing pipe can carry out heat exchange on blood, and the temperature changing device of the oxygenator for ECMO can have higher heat exchange efficiency and lower precharge quantity.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a top view of a mandrel body and a metal tube heat conducting structure in this embodiment;
FIG. 2 is a top view of the mandrel body, the metal tube temperature-varying structure and the metal tube temperature-varying structure in this embodiment;
fig. 3 is a schematic structural view of a metal pipe diversion temperature changing structure and a metal pipe temperature changing structure in this embodiment;
fig. 4 is a schematic cross-sectional structure diagram of the mandrel body, the metal tube temperature-conducting structure and the metal tube temperature-changing structure in this embodiment.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
It should be noted that all the directional indications such as up, down, left, right, front and rear … … in the embodiment of the present invention are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
For further understanding of the contents, features and effects of the present invention, the following embodiments are enumerated in conjunction with the accompanying drawings, and the following detailed description is given:
referring to fig. 1 to 4, fig. 1 is a top view of a core shaft body and a metal tube diversion temperature change structure in the present embodiment, fig. 2 is a top view of the core shaft body, the metal tube diversion temperature change structure and the metal tube temperature change structure in the present embodiment, fig. 3 is a schematic structural diagram of the metal tube diversion temperature change structure and the metal tube temperature change structure in the present embodiment, and fig. 4 is a schematic structural cross-sectional diagram of the core shaft body, the metal tube diversion temperature change structure and the metal tube temperature change structure in the present embodiment. The metal pipe flow-guiding temperature-changing device in this embodiment includes a mandrel body 1 and a metal pipe flow-guiding temperature-changing structure 2. The metal pipe flow guide temperature change structure 2 comprises a plurality of metal flow guide temperature change pipes 21, each metal flow guide temperature change pipe 21 is spirally wound on the outer wall of the core shaft body 1, the plurality of metal flow guide temperature change pipes 21 are sequentially arranged at intervals along the peripheral direction of the core shaft body 1, and a flow guide channel is formed between every two adjacent metal flow guide temperature change pipes 21.
As the metal pipe heat conduction structure 2 that blood conductance used, directly form through a plurality of metal water conduction temperature change pipe 21 spiral windings locate core axis body 1 outer wall for the space between core axis body 1 and the metal pipe heat conduction structure 2 obtains make full use of, thereby makes whole metal pipe heat conduction temperature change device volume littleer, when its cooperation forms the oxygenator for the ECMO, can make the whole volume of oxygenator more small and exquisite, the medical application of being convenient for. Moreover, heat exchange water can be discharged from the metal diversion temperature change pipe 21, so that the metal diversion temperature change pipe 21 can exchange heat with blood, and the temperature change device of the oxygenator for ECMO can have higher heat exchange efficiency and lower priming volume.
It can be understood that the metal diversion temperature change tubes 21 are spirally wound on the outer wall of the core shaft body 1, so that a diversion channel formed between two adjacent metal diversion temperature change tubes 21 is also of a spiral structure, and the diversion channel of the spiral structure is convenient for diversion of blood so as to help uniform dispersion of the blood.
Referring back to fig. 1, 2 and 4, further, the mandrel body 1 comprises a first end portion 11 and a second end portion 12 integrally connected with the first end portion 11. The diameter of the second end portion 12 is larger than the diameter of the first end portion 11. The metal diversion temperature changing pipe 21 is spirally wound on the outer wall of the second end part 12. Specifically, one end of the first end portion 11 is integrally connected to one end of the second end portion 12, and the first end portion 11 overlaps with the central axis of the second end portion 12. The first end portion 11 is cylindrical, and the diameter of the first end portion 11 gradually increases from the end of the first end portion 11 far away from the second end portion 12 to the end of the first end portion 11 close to the second end portion 12, so that the outer wall of the first end portion 11 forms a diversion arc surface 111. The second end portion 12 is cylindrical, and the end portion of the first end portion 11 is transited to the second end portion 12 in a cambered structure. The metal temperature-changing diversion pipe 21 is spaced from the first end portion 11, and the spacing between the metal temperature-changing diversion pipe 21 and the first end portion 11 is gradually reduced from the end of the first end portion 11 far away from the second end portion 12 to the end of the first end portion 11 close to the second end portion 12.
The metal diversion temperature change pipes 21 are spirally wound on the outer wall of the second end portion 12, and the metal diversion temperature change pipes 21 are spirally wound on the outer side of the first end portion 11, so that spiral diversion channels formed between two adjacent metal diversion temperature change pipes 21 are formed on the outer side of the first end portion 11 and the outer wall of the second end portion 12. The distance between the flow guiding arc surface 111 of the first end portion 11 and the flow guiding channel is gradually reduced, so that blood smoothly and uniformly enters the flow guiding channel. The circumferential direction of the mandrel body 1 in this embodiment is the circumferential edge of the cross section of the mandrel body 1, that is, the circumferential direction of the cross section of the second end portion 12.
Referring to fig. 1 to 4 again, further, the metal diversion temperature changing pipe 21 in this embodiment is a hollow pipe. The metal diversion temperature changing pipe 21 in this embodiment is made of stainless steel, and the metal diversion temperature changing pipe 21 made of stainless steel is easier for heat exchange, so that the realization of the temperature changing structure of the metal pipe diversion temperature changing structure 2 is facilitated. Preferably, the surface of the metal diversion temperature change pipe 21 is provided with a medical coating. The medical coating is formed on the metal diversion temperature change pipe 21, so that the biocompatibility of the metal diversion temperature change pipe 21 can be enhanced, and the service life of the oxygenator is prolonged.
Referring to fig. 2 to 4 again, further, the metal pipe diversion temperature changing device in this embodiment further includes a metal pipe temperature changing structure 3. The metal pipe temperature changing structure 3 is sleeved outside the metal pipe flow guiding temperature changing structure 2. The temperature changing layer of the oxygenator is formed by the metal pipe temperature changing structure 3 made of metal materials so as to enhance the temperature changing effect.
Specifically, the metal tube temperature changing structure 3 includes at least two metal temperature changing layers 31, and the at least two metal temperature changing layers 31 are sequentially sleeved from inside to outside. The metal temperature changing layer 31 includes a plurality of metal temperature changing pipes 311, the plurality of metal temperature changing pipes 311 are sequentially arranged at intervals, and the metal temperature changing pipes 311 in two adjacent metal temperature changing layers 31 are arranged in a mutually crossing manner, so that the plurality of metal temperature changing pipes 311 in two adjacent metal temperature changing layers 31 are matched to form a plurality of flow passing pores. It should be noted that the sizes of the plurality of through-flow pores may be the same or different. Furthermore, the size of the plurality of flow holes gradually changes from large to small along the flowing direction of the metal diversion temperature changing pipe 21. The metal temperature changing pipe 311 in this embodiment is a hollow pipe, and the metal temperature changing pipe 311 is disposed in an inclined manner, so that an inclined included angle is formed between the metal temperature changing pipe 311 and the central axis of the core shaft body 1. The metal temperature changing pipe 311 is made of stainless steel. The metal temperature change pipe can exchange heat more quickly, and compared with a traditional plastic temperature change membrane, the metal temperature change structure 3 formed by the metal temperature change pipe 311 with the same volume has a higher temperature change effect, that is, if the same temperature change requirement is to be met, the oxygenator for ECMO adopting the metal temperature change structure 3 can be set to have a smaller volume. And because the metal heat exchange effect is good, the whole pre-charging amount of the oxygenator is lower, and the blood dilution can be reduced. Preferably, the surface of the metal temperature change tube 311 has a medical coating. The biocompatibility of the metal temperature changing tube 311 can be enhanced, thereby prolonging the service time of the oxygenator.
In this embodiment, the process of diversion and temperature change of the metal pipe diversion and temperature change device is as follows: after entering the oxygenator, human blood falls from above the first end portion 11 of the mandrel body 1, after falling on the first end portion 11, the blood is firstly dispersed around through the diversion arc surface 111, and then enters the diversion channel formed between two adjacent metal diversion temperature change tubes 21, then continues to uniformly flow towards the metal tube temperature change structure 3 on the outer side under the forced diversion action of the spiral diversion channel, and then passes through the overflow pores formed by the matching of the plurality of metal temperature change tubes 311, and the metal temperature change tubes 311 heat or cool the blood; furthermore, when blood flows along the metal guided temperature change tube 21 and passes through the flow passing hole, since the size of the flow passing holes gradually changes from large to small along the flowing direction of the metal guided temperature change tube 21, the flow passing hole at the uppermost layer (i.e. the initial blood entering end) is the largest, the power required by the blood to cross is the smallest, and conversely, the power required by the lowermost layer of the blood is the largest, so that the metal temperature change tubes 311 at the upper layer can be further fully utilized, and the phenomenon that most of the blood rapidly falls to the lowermost layer under the action of gravity and then passes through the flow passing hole at the lowermost layer to enter an oxygenating silk membrane (not shown) is avoided. The blood after temperature change will continue to enter the oxygenating silk membrane of the oxygenator to complete oxygen exchange, which is not described herein again.
In summary, the metal tube diversion and temperature change device in this embodiment forms a diversion structure by winding the plurality of metal diversion and temperature change tubes and the plurality of metal temperature change tubes around the mandrel body, so as to realize the effects of forced diversion, effective diversion and the like on blood, and achieve the purpose of effectively improving the utilization efficiency of the temperature change device; and then the metal material of higher heat exchange efficiency forms the alternating temperature structure to reach the same alternating temperature effect with less metal alternating temperature pipe, and then can reduce the metal pipe water conservancy diversion alternating temperature device volume, thereby the oxygenator overall structure volume for the ECMO that the cooperation was designed is more small and exquisite. Moreover, the metal diversion temperature changing pipe and the metal temperature changing pipe can realize the temperature changing function, and the same temperature changing effect can be achieved by less pre-charging amount.
The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A metal pipe heat conduction flow temperature control device is characterized by comprising:
a mandrel body (1); and
the metal pipe diversion temperature changing structure (2) comprises a plurality of metal diversion temperature changing pipes (21); each metal diversion temperature change pipe (21) is spirally wound on the outer wall of the core shaft body (1), a plurality of metal diversion temperature change pipes (21) are sequentially arranged at intervals along the peripheral direction of the core shaft body (1), and a diversion channel is formed between every two adjacent metal diversion temperature change pipes (21).
2. The metal pipe temperature diversion and change device according to claim 1, wherein the metal pipe temperature diversion and change tube (21) is in a hollow tubular shape.
3. The metal tube flow-guiding temperature-changing device according to claim 1, further comprising a metal tube temperature-changing structure (3); the metal pipe temperature changing structure (3) is sleeved outside the metal pipe flow guiding temperature changing structure (2).
4. A metal tube temperature-changing device according to claim 3, wherein the metal tube temperature-changing structure (3) comprises at least two metal temperature-changing layers (31); at least two metal temperature change layers (31) are sequentially sleeved from inside to outside.
5. The metal pipe flow-guiding temperature-changing device according to claim 4, wherein the metal temperature-changing layer (31) comprises a plurality of metal temperature-changing pipes (311), the plurality of metal temperature-changing pipes (311) are sequentially arranged at intervals, and the metal temperature-changing pipes (311) in two adjacent metal temperature-changing layers (31) are arranged in a mutually crossing manner, so that the plurality of metal temperature-changing pipes (311) in two adjacent metal temperature-changing layers (31) are matched to form a plurality of flow-through pores.
6. The metal pipe flow-guiding temperature change device according to claim 5, wherein the metal temperature change pipe (311) is in a hollow pipe shape.
7. The metal pipe diversion temperature changing device according to claim 5, wherein the metal diversion temperature changing pipe (21) and the metal temperature changing pipe (311) are made of stainless steel.
8. The metal pipe temperature-changing device according to claim 7, wherein the surfaces of the metal temperature-changing pipe (21) and the metal temperature-changing pipe (311) are provided with medical coatings.
9. The metal pipe diverter temperature changing device according to claim 1, wherein the mandrel body (1) comprises a first end portion (11) and a second end portion (12) integrally connected to the first end portion (11); the diameter of the second end (12) is greater than the diameter of the first end (11); the metal diversion temperature changing pipe (21) is spirally wound on the outer wall of the second end part (12).
10. An oxygenator for ECMO, comprising the metal tube flow-directing temperature changing device of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011608860.5A CN112755291B (en) | 2020-12-30 | 2020-12-30 | Metal tube diversion temperature changing device and oxygenator for ECMO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011608860.5A CN112755291B (en) | 2020-12-30 | 2020-12-30 | Metal tube diversion temperature changing device and oxygenator for ECMO |
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| Publication Number | Publication Date |
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| CN112755291A true CN112755291A (en) | 2021-05-07 |
| CN112755291B CN112755291B (en) | 2022-08-02 |
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| CN202011608860.5A Active CN112755291B (en) | 2020-12-30 | 2020-12-30 | Metal tube diversion temperature changing device and oxygenator for ECMO |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065264A (en) * | 1976-05-10 | 1977-12-27 | Shiley Laboratories, Inc. | Blood oxygenator with integral heat exchanger for regulating the temperature of blood in an extracorporeal circuit |
| DE2736489A1 (en) * | 1977-08-12 | 1979-02-22 | Linde Ag | Heat exchanger with helically wound tube layers - has equal tube length in layers separated by wire mesh fabric |
| US20120193289A1 (en) * | 2011-01-27 | 2012-08-02 | Medtronic, Inc. | De-Airing Oxygenator for Treating Blood in an Extracorporeal Blood Circuit |
| CN111701103A (en) * | 2020-06-29 | 2020-09-25 | 广东省心血管病研究所 | Pump-free artificial membrane lung for ECMO |
-
2020
- 2020-12-30 CN CN202011608860.5A patent/CN112755291B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065264A (en) * | 1976-05-10 | 1977-12-27 | Shiley Laboratories, Inc. | Blood oxygenator with integral heat exchanger for regulating the temperature of blood in an extracorporeal circuit |
| DE2736489A1 (en) * | 1977-08-12 | 1979-02-22 | Linde Ag | Heat exchanger with helically wound tube layers - has equal tube length in layers separated by wire mesh fabric |
| US20120193289A1 (en) * | 2011-01-27 | 2012-08-02 | Medtronic, Inc. | De-Airing Oxygenator for Treating Blood in an Extracorporeal Blood Circuit |
| CN111701103A (en) * | 2020-06-29 | 2020-09-25 | 广东省心血管病研究所 | Pump-free artificial membrane lung for ECMO |
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| CN112755291B (en) | 2022-08-02 |
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