Blood thermostat

Abstract

The present invention relates to the technical field of medical devices, and provides a blood thermostat, which includes a thermostat body, the thermostat body having an exhaust groove, a cooling groove independent of the exhaust groove, a coolant inlet, a coolant outlet, a gas outlet connected to the exhaust groove, a blood inlet, and a blood outlet, a cooler with a cooling channel is arranged in the cooling groove, the blood inlet, the exhaust groove, the cooling channel, and the blood outlet are connected in sequence, and the coolant inlet, the cooling groove, and the coolant outlet are connected in sequence; the coolant inlet, the exhaust groove, the gas outlet, and the blood inlet are arranged at the top of the thermostat body, and the blood outlet and the coolant outlet are arranged at the bottom of the thermostat body. Compared with the prior art, the blood thermostat provided by the present invention has a compact structure, a small size, and is convenient to carry and use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a blood temperature changer. Background Art

[0002] The myocardial protective fluid perfusion device perfuses the heart with myocardial protective fluid during surgery to stop the heart and reduce its myocardial temperature and oxygen consumption to achieve a good myocardial protective effect, thereby improving the patient's quality of life. The myocardial protective fluid perfusion device usually consists of a blood temperature changer, a liquid storage part, and a pump tube.

[0003] At present, the conventional blood thermostat comprises a spiral cooling tube, which is placed in a barrel filled with water to form the cooling part of the blood thermostat. Therefore, the volume is too large and the cooling effect is poor. Summary of the invention

[0004] The object of the present invention is to provide a blood temperature changer to solve the technical problem in the prior art that the cooler of the existing temperature changer is arranged outside, the overall volume is large, and it is not convenient to carry and use.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a blood thermostat, the blood thermostat includes a thermostat body, the thermostat body has an exhaust groove, a cooling groove independent of the exhaust groove, a coolant inlet, a coolant outlet, a gas outlet connected to the exhaust groove, a blood inlet and a blood outlet, a cooler with a cooling channel is arranged in the cooling groove, the blood inlet, the exhaust groove, the cooling channel, and the blood outlet are connected in sequence, and the coolant inlet, the cooling groove, and the coolant outlet are connected in sequence; the coolant inlet, the exhaust groove, the gas outlet, and the blood inlet are arranged at the top of the thermostat body, and the blood outlet and the coolant outlet are arranged at the bottom of the thermostat body.

[0006] Furthermore, a guide plate is provided in the cooling groove of the thermostat body, and the guide plate divides the cooling groove into a guide chamber and a heat exchange chamber. Strip-shaped guide holes are formed on the guide plate for the cooler to pass through, and a preset gap is left between the inner wall of the guide hole and the outer wall of the cooler for the coolant to flow.

[0007] Furthermore, the cooler includes a plurality of hollow cooling plates parallel to each other and a connecting seat connected between two adjacent cooling plates, the connecting seat having a conducting cavity, the interior of the cooling plate being sequentially connected to the conducting cavity to form the cooling channel, the cooling channel having a cooling liquid inlet and a cooling liquid outlet located at both ends thereof, the cooling liquid inlet being connected to the exhaust groove, and the cooling liquid outlet being connected to the blood outlet.

[0008] Furthermore, the cooling plate has a plurality of strip-shaped prismatic structures to increase the contact area with the fluid; the cooling plate includes two cooling fins parallel to each other and two connecting fins connected between the two cooling fins, and a plurality of the prismatic structures are formed on each of the cooling fins; each cooling fin includes a plurality of first sheets and a plurality of second sheets, and the plurality of first sheets and the plurality of second sheets are alternately arranged, and adjacent first sheets and second sheets constitute the prismatic structure.

[0009] Furthermore, the connecting seat includes a seat body, which has a connecting groove for the end of the cooling plate to be placed in and sealed with the cooling plate; a plurality of convex protrusions are arranged in the connecting groove of the seat body to abut against the inner wall of the cooling plate.

[0010] Furthermore, the blood thermostat also includes an exhaust valve arranged on the top of the thermostat body, the exhaust valve has an air inlet, a first exhaust port and a second exhaust port, and the air inlet is connected to the gas outlet.

[0011] Further, the exhaust valve includes a valve body and an operating member connected to each other, the valve body includes a valve seat and an air intake connector, a first exhaust connector and a second exhaust connector respectively connected to the valve seat, the air intake connector is connected to the thermostat body, the air inlet is located at the outer end of the air intake connector, the first exhaust port is located at the outer end of the first exhaust connector, and the second exhaust port is located at the outer end of the second exhaust connector.

[0012] Furthermore, the thermostat body includes a top cover and an upper assembly seat, and the top cover and the upper assembly seat are connected and fixed to enclose the exhaust groove; the top cover includes a head, an annular foot located below the head and connected to the upper assembly seat, and an annular wall extending downward from the outer periphery of the head to the foot; the annular wall includes a straight wall portion extending vertically downward from the head to the foot and an inclined wall portion extending downward and outward from the head to the foot, and the blood inlet is formed on the straight wall portion.

[0013] Furthermore, it also includes a fixing device, which includes a fixing seat for fixing the thermostat body on a first columnar external support, a hanging bracket for hanging the thermostat body on a second external support, and an external fixing plate fixed to the thermostat body; the external fixing plate is respectively connected and fixed to the fixing seat and the hanging bracket.

[0014] Furthermore, the thermostat body includes an upper assembly seat, an outer frame and a lower assembly seat, and the upper assembly seat, the outer frame and the lower assembly seat are connected in sequence to enclose the cooling groove; the upper assembly seat has an inlet for coolant to enter the cooling groove and an upper assembly port for connecting to one end of the cooling channel, and the lower assembly seat has an outlet for coolant to flow out of the cooling groove and a lower assembly port for connecting to the other end of the cooling channel; an upper clamping portion is formed on the upper assembly seat, a lower clamping portion is formed on the lower assembly seat, an upper clamping fitting portion that cooperates with the upper clamping portion and a lower clamping fitting portion that cooperates with the lower clamping portion are formed on the side wall of the outer frame, and sealing components are provided between the upper assembly seat and the outer frame and between the lower assembly seat and the outer frame.

[0015] Compared with the prior art, the blood thermostat provided by the present invention includes a thermostat body, which has an exhaust groove, a cooling groove independent of the exhaust groove, a coolant inlet, a coolant outlet, a gas outlet connected to the exhaust groove, a blood inlet and a blood outlet, and a cooler with a cooling channel is arranged in the cooling groove. In this way, the structure is compact, the volume is small, and it is convenient to carry and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of a blood temperature changer provided by an embodiment of the present invention;

[0017] Figure 2 is a cross-sectional schematic diagram of a blood temperature changer provided by an embodiment of the present invention;

[0018] Figure 3 It is a three-dimensional schematic diagram of the upper assembly seat, the outer frame and the lower assembly seat after being assembled according to an embodiment of the present invention;

[0019] Figure 4 It is a three-dimensional schematic diagram of an upper assembly seat, an outer frame and a lower assembly seat provided by an embodiment of the present invention when they are disassembled;

[0020] Figure 5 for Figure 3 Sectional view of the middle PP surface;

[0021] Figure 6 is a schematic front view of a blood temperature changer provided by an embodiment of the present invention;

[0022] Figure 7 is a side view schematic diagram of a blood temperature changer provided by an embodiment of the present invention;

[0023] Figure 8 is a schematic top view of a blood temperature changer provided by an embodiment of the present invention;

[0024] Fig. 9 for Figure 8Schematic cross-sectional view of the AA plane;

[0025] Fig.10 for Figure 8 Schematic cross-sectional view of the middle BB surface;

[0026] Fig.11 is a three-dimensional schematic diagram of a guide plate provided in an embodiment of the present invention;

[0027] Fig.12 is an exploded schematic diagram of a thermostat body provided by an embodiment of the present invention;

[0028] Fig.13 for Fig.12 Enlarged view of the middle C part;

[0029] Fig.14 is a three-dimensional schematic diagram of a blood temperature changer provided by an embodiment of the present invention being supported on an external support;

[0030] Fig.15 It is a three-dimensional schematic diagram of an external support, an outer frame of a thermostat body and a fixing device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the implementation of the present invention is described in detail below with reference to specific drawings.

[0033] For the convenience of description, the terms “front”, “rear”, “left”, “right”, “up” and “down” mentioned below are consistent with the front, rear, left, right, up and down directions of the drawings themselves, but do not limit the structure of the present invention.

[0034] Unless otherwise defined, the technical or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but indicate the existence of at least one.

[0035] See also Figure 1 and2 In this embodiment, the blood thermostat 100 includes a thermostat body 10 and an exhaust valve 30. The thermostat body 10 has an exhaust groove 103, a gas outlet 104, a blood inlet 105 and a blood outlet 106. The gas outlet 104, the blood inlet 105 and the blood outlet 106 are respectively connected to the exhaust groove 103. The exhaust groove 103 and the blood inlet 105 are located at the top of the thermostat body 10. The blood outlet 106 is located at the bottom of the thermostat body 10. A cooler is provided in the thermostat body 10. The blood enters the exhaust groove 103 through the blood inlet 105 and then flows out from the blood outlet 106 after passing through the cooler. The cooler can cool the blood. The gas generated when the blood flows can be discharged from the outside of the thermostat body 10 through the gas outlet 104.

[0036] In other embodiments, the blood inlet 105 and the blood outlet 106 are both disposed on the top of the thermostat body 10 , and the blood inlet 105 and the blood outlet 106 may be disposed on the same side, adjacent sides, or opposite sides of the thermostat body 10 , respectively.

[0037] In other embodiments, the blood inlet 105 and the blood outlet 106 may also be disposed at any position at the bottom or middle of the thermostat body 10 .

[0038] 1 and 2, the exhaust valve 30 has an air inlet 30a, a first exhaust port 30b and a second exhaust port 30c, and the air inlet 30a is connected to the gas outlet 104. In this embodiment, the first exhaust port 30b and the second exhaust port 30c are both normally closed, and the first exhaust port 30b is located below the second exhaust port 30c, that is, the height of the second exhaust port 30c (referring to the distance from the thermostat body 10) is higher than the height of the first exhaust port 30b (referring to the distance from the thermostat body 10). It is easy to understand that the high-low position design is adopted to facilitate the effective isolation of the two exhaust ports, which is safe and reliable.

[0039] Referring to 1 and 2, in this embodiment, the exhaust valve 30 includes a valve body 31 and an operating member 32 connected to each other, the valve body 31 includes a valve seat 311 and an air intake connector 312, a first exhaust connector 313 and a second exhaust connector 314 respectively connected to the valve seat 311, the air intake connector 312 is connected to the thermostat body 10, the air intake port 30a is located at the outer end of the air intake connector 312, the first exhaust port 30b is located at the outer end of the first exhaust connector 313, and the second exhaust port 30c is located at the outer end of the second exhaust connector 314. The operating member 32 has a valve core portion built into the valve seat 311, and the first exhaust port 30b and the second exhaust port 30c can be opened and closed by turning the operating member 32 relative to the valve body 31. In particular, when exhaust is required, the first exhaust port 30b, which is lower than the second exhaust port 30c, is generally opened first to exhaust, and after the first exhaust port 30b is blocked, the second exhaust port 30c can be opened to exhaust.

[0040] Referring to 1 and 2, in the present embodiment, the air intake connector 312 has a circular cross-section, the first exhaust connector 313 extends outward from the valve seat 311, and the extension direction of the first exhaust connector 313 is arranged orthogonally to the axial direction of the air intake connector 312, and the second exhaust connector 314 extends upward from the valve seat 311 along the axial direction of the air intake connector 312. It is easy to understand that the first exhaust connector 313 is arranged roughly horizontally and the second connector is arranged roughly vertically, so that the first exhaust port 30b and the second exhaust port 30c are effectively separated, and the horizontal first exhaust connector 313 can prevent foreign matter from entering.

[0041] In other embodiments, the first exhaust connector 313 and / or the second exhaust connector 314 may be arranged tilted, horizontally, or vertically, respectively.

[0042] Referring to 1 and 2, in this embodiment, the air inlet connector 312 is connected and fixed to the thermostat body 10 via a connecting sleeve 33, and the connecting sleeve 33 and the thermostat body 10 are threadedly connected, so that the air inlet connector 312 is removably fixed to the thermostat body 10.

[0043] As a further optimization, a valve sealing component is provided between the air inlet connector 312 and the thermostat body 10 to seal the gap therebetween, thereby preventing external gas from entering the exhaust groove 103 .

[0044] Referring to 1 and 2, in this embodiment, the thermostat body 10 includes a top cover 40 and an upper assembly seat 50, which are connected and fixed to enclose a gas exhaust groove 103, and a gas outlet 104 and a blood inlet 105 are formed on the top cover 40. The upper assembly seat 50 has an upper assembly port connected to the inlet of the cooler, and the blood in the gas exhaust groove 103 flows into the inlet of the cooler from the upper assembly port.

[0045] See also Figure 1 and 2 In this embodiment, the top cover 40 includes a head 41, an annular foot 42 located below the head 41 and connected to the upper assembly seat 50, and an annular wall 43 extending downward from the outer periphery of the head 41 to the foot 42. The gas outlet 104 is formed on the head 41, and the blood inlet 105 is formed on the annular wall 43. The foot 42 of the top cover 40 can be connected and fixed to the upper assembly seat 50 by any existing fixing method such as snap-fitting and tight fitting. In this way, it is convenient to install and disassemble.

[0046] See also Figure 1 and 2In this embodiment, the annular wall portion 43 includes a straight wall portion 431 extending vertically downward from the head portion 41 to the foot portion 42 and an inclined wall portion 432 extending downward and outwardly from the head portion 41 to the foot portion 42, and the blood inlet 105 is formed on the straight wall portion 431. It can be understood that the top cover 40 adopts a conical structure with a cross section that is small at the top and large at the bottom, and the inner wall of the inclined wall portion 432 has a guiding slope, so that the gas can effectively rise to the liquid surface of the blood along the guiding slope under the action of buoyancy, thereby improving the exhaust efficiency.

[0047] See also Figure 1 and 2 The thermostat body 10 is made of transparent glass or plastic material so as to observe the blood in the exhaust groove 103 of the thermostat body 10 and to select whether exhaust is needed according to the gas content in the blood.

[0048] See also Figure 1 and 2 In this embodiment, a scale line corresponding to the exhaust groove 103 is formed on the outer wall of the top cover 40 of the thermostat body 10. The scale line can be used to determine whether exhaust is required according to the liquid level.

[0049] See also Figures 3 to 5 The blood thermostat 100 of the present embodiment includes a thermostat body 10, which includes an upper assembly seat 50, an outer frame 60 and a lower assembly seat 70. The upper assembly seat 50, the outer frame 60 and the lower assembly seat 70 are connected in sequence to form a cooling groove 101 for placing a cooler with a cooling channel. The upper assembly seat 50, the outer frame 60 and the lower assembly seat 70 are all but not limited to transparent plastic parts. The upper assembly seat 50 and the outer frame 60 and the lower assembly seat 70 and the outer frame 60 are clamped and fixed, and are sealed. The upper assembly seat 50 has an inlet 51 for coolant to enter the cooling groove and an upper assembly port 52 for connecting to one end of the cooling channel. The lower assembly seat 70 has a lead-out port 71 for coolant to flow out of the cooling groove and a lower assembly port 72 for connecting to the other end of the cooling channel. The inlet 51, the cooling groove 101 and the lead-out port 71 are connected in sequence. In this way, the plastic material is used for molding, the cost is low, the upper assembly seat 50, the outer frame 60 and the lower assembly seat 70 are connected and fixed by clamping, the installation is convenient, and the structure is simple and reliable. It is worth mentioning that the blood flows into the cooler from the upper assembly port 52 of the upper assembly seat 50, and then flows out through the lower assembly port 72 of the lower assembly seat 70, and the coolant with a lower temperature flows into the cooling tank 101 from the introduction port 51, contacts with the cooler and exchanges heat, and the coolant with a higher temperature after the heat exchange flows out from the outlet 71, thereby cooling the blood in the cooler.

[0050] See also Figures 3 to 5An upper engaging portion 53 is formed on the upper assembly seat 50, a lower engaging portion 73 is formed on the lower assembly seat 70, an upper engaging portion 61 engaging with the upper engaging portion 53 and a lower engaging portion 62 engaging with the lower engaging portion 73 are formed on the side wall of the outer frame 60, and a sealing component 102 is provided between the upper assembly seat 50 and the outer frame 60 and between the lower assembly seat 70 and the outer frame 60. In this embodiment, the upper assembly seat 50 includes an upper base 54 and an annular upper side wall portion 55 connected to the upper base 54, the inlet 51 and the upper assembly port 52 are both formed on the upper base 54, the lower assembly seat 70 includes a lower base 74 and an annular lower side wall portion 75 connected to the lower base 74, the outlet 71 and the lower assembly port 72 are both formed on the lower base 74; a sealing member 102 is provided between the upper side wall portion 55 and the outer frame 60 and between the lower side wall portion 75 and the outer frame 60. That is to say, during assembly, the upper side wall portion 55 of the upper assembly seat 50 and the lower side wall portion 75 of the lower assembly seat 70 are respectively inserted into the outer frame 60, and the upper clamping portion 53 of the upper assembly seat 50 is engaged with the upper clamping portion 61 of the outer frame 60, thereby the upper assembly seat 50 is fixed on the outer frame 60, and the gap between the two is sealed by the sealing member 102, so as to avoid the cooling liquid in the cooling groove 101 from flowing out from the upper end (the upper end shown in the figure) of the outer frame 60. The lower clamping portion 73 of the lower assembly seat 70 is engaged with the lower clamping portion 62 of the outer frame 60, thereby the lower assembly seat 70 is fixed on the outer frame 60, and the gap between the two is sealed by the sealing member 102, so as to avoid the cooling liquid in the cooling groove 101 from flowing out from the lower end (the lower end shown in the figure) of the outer frame 60.

[0051] In other embodiments, both ends of the outer frame 60 may also be placed in the upper side wall portion 55 and the lower side wall portion 75 respectively.

[0052] See also Figures 3 to 5 In this embodiment, the sealing member 102 is but not limited to a sealing ring, an upper mounting groove 56 for fixing the sealing member 102 is formed on the outer side wall of the upper side wall portion 55, and a lower mounting groove 76 for fixing the sealing member 102 is formed on the outer side wall of the lower side wall portion 75. The two sealing members 102 can be respectively installed in the upper mounting groove 56 and the lower mounting groove 76 by tight fit and adhesive, the upper clamping portion 53 of the upper assembly seat 50 is located between the sealing member 102 of the upper mounting groove 56 and the upper base 54, and the lower clamping portion 73 of the lower assembly seat 70 is located between the sealing member 102 of the lower mounting groove 76 and the lower base 74.

[0053] In other embodiments, the sealing member 102 may also be a sealing gasket. The sealing member 102 of the upper assembly seat 50 is installed on the upper base 54 and wrapped around the upper side wall 55. The sealing member 102 of the lower assembly seat 70 is installed on the lower base 74 and wrapped around the lower side wall 75.

[0054] See also Figures 3 to 5 In this embodiment, the upper engaging portion 53 is convexly provided on the outer side wall of the upper side wall portion 55, and the lower engaging portion 73 is convexly provided on the outer side wall of the lower side wall portion 75. The upper engaging portion 61 has an upper engaging hole 611 for the upper engaging portion 53 to be engaged; the lower engaging portion 62 has a lower engaging hole 621 for the lower engaging portion 73 to be engaged. The number of the upper engaging holes 611 is, but not limited to, four, and they are arranged along the circumference of the outer frame 60, and the upper engaging portions 53 correspond to the upper engaging holes 611 one by one. The number of the lower engaging holes 621 is, but not limited to, four, and they are arranged along the circumference of the outer frame 60, and the lower engaging portions 73 correspond to the lower engaging holes 621 one by one.

[0055] In other embodiments, the upper engaging portion 61 has an upper engaging groove for the upper engaging portion 53 to be engaged with; and the lower engaging portion 62 has a lower engaging groove for the lower engaging portion 73 to be engaged with.

[0056] See also Figures 3 to 5 In this embodiment, both the upper assembly seat 50 and the lower assembly seat 70 are provided with support ribs 50a for positioning and supporting the cooler. The support ribs 50a are used to position and support the cooler, thereby maintaining the position of the cooler, making the structure more stable and highly reliable.

[0057] See also Figures 6 to 10 In this embodiment, the blood thermostat 100 includes a thermostat body 10, which includes a top cover 40, an upper assembly seat 50, an outer frame 60, a lower assembly seat 70, a bottom cover 80 and a cooler 90. The top cover 40, the upper assembly seat 50, the outer frame 60, the lower assembly seat 70 and the bottom cover 80 are made of but not limited to transparent plastic. The top cover 40, the upper assembly seat 50, the outer frame 60, the lower assembly seat 70 and the bottom cover 80 are connected and fixed in sequence. The upper assembly seat 50, the outer frame 60 and the lower assembly seat 70 enclose a cooling groove 101, and the cooler 90 is built in the cooling groove 101.

[0058] Of course, the top cover 40, the upper assembly seat 50, the outer frame 60, the lower assembly seat 70, and the bottom cover 80 can also be integrally formed.

[0059] from Figures 6 to 8It can be seen that a blood inlet 105 and a coolant inlet 107 are provided on the top cover 40 of the thermostat body 10, and a blood outlet 106 and a coolant outlet 108 are provided on the bottom cover 80. The blood inlet 105 and the blood outlet 106 are respectively connected to the interior of the cooler 90, and the coolant inlet 107 and the coolant outlet 108 are respectively connected to the cooling tank 101. It can be understood that the coolant inlet 107 and the coolant outlet 108 are respectively at the upper and lower ends of the thermostat body 10 (the upper and lower directions shown in the figure), and the coolant with a lower temperature enters the cooling tank 101 from the coolant inlet 107 and exchanges heat with the cooler 90. The coolant with a higher temperature after the heat exchange flows out from the coolant outlet 108, thereby cooling the blood in the cooler 90. The coolant inlet 107 and the coolant outlet 108 arranged above and below can increase the flow range of the coolant, thereby improving the cooling effect.

[0060] from Figure 4 and 9 It can be seen that, in particular, an upper liquid guide tube 111 is provided in the top cover 40, the outer end of the upper liquid guide tube 111 extends to the outside of the top cover, and its inner end extends into the guide cavity of the cooling tank 101 through the inlet 51, and the coolant inlet 107 is formed on the outer end of the upper liquid guide tube 111; a lower liquid guide tube 112 is provided in the bottom cover 80, the outer end of the lower liquid guide tube 112 extends to the outside of the bottom cover 80, and its inner end extends into the heat exchange cavity of the cooling tank 101 through the outlet 71, and the coolant outlet 108 is formed on the outer end of the lower liquid guide tube 112. The upper liquid guide tube 111 and the top cover 40 can be integrally formed, or they can be separately formed and then sealed and assembled; the lower liquid guide tube 112 and the bottom cover 80 can be integrally formed, or they can be separately formed and then sealed and assembled.

[0061] In this embodiment, the coolant inlet 107 can be connected to the liquid outlet of an external pump (not shown), and the coolant outlet 108 can be connected to the liquid inlet of the external pump. In this way, the coolant can circulate, the heat diffusion rate is increased, and the cooling effect is ensured to be stable and lasting.

[0062] See also Fig. 9 and 10A cooler 90 and a guide plate 109 are arranged in the cooling groove 101 of the thermostat body 10. The guide plate 109 divides the cooling groove 101 into a guide chamber 101a and a heat exchange chamber 101b. A strip-shaped guide hole 1091 is formed on the guide plate 109 for the cooler 90 to pass through. A preset gap 109a for the coolant to flow is left between the inner wall of the guide hole 1091 and the outer wall of the cooler 90. The coolant inlet 107, the guide chamber 101a, the preset gap 109a, the heat exchange chamber 101b, and the coolant outlet 108 are connected in sequence. In this embodiment, the guide plate 109 is roughly a square plate. The guide plate 109 is fixed on the upper assembly seat 50 and divides the cooling groove 101 into a guide chamber 101a and a heat exchange chamber 101b arranged up and down (up and down directions as shown in the figure). Only a small part of the cooler 90 is located in the guide chamber 101a, and the remaining part is located in the heat exchange chamber 101b. It can be understood that after the coolant enters the guide chamber 101a from the coolant inlet 107, it will diffuse and flow around under the obstruction of the guide plate 109, and then flow into the heat exchange chamber 101b through the above-mentioned preset gap 109a left between the inner wall of the guide hole 1091 and the outer wall of the cooler 90. In this way, the coolant can evenly enter the heat exchange chamber 101b of the cooling groove 101, and fully contact and cool the cooler 90, so as to circulate close to the outer wall of the cooler 90, thereby improving the cooling effect.

[0063] Please continue to see Fig. 9 and 10 The upper assembly seat 50 has an annular mounting groove on its bottom surface for the guide plate 109 to be placed in. In this embodiment, an adhesive is provided between the guide plate 109 and the upper assembly seat 50 to connect and fix the two.

[0064] See also Fig.10 and 11 The shape of the guide hole 1091 on the guide plate 109 matches the cross-sectional shape of the cooler 90, and the inner wall of the guide hole 1091 is serrated. In the present embodiment, the guide hole 1091 on the guide plate 109 has two guide longitudinal walls parallel to each other, and each guide longitudinal wall is provided with a plurality of ribs arranged along the extension direction of the guide hole 1091.

[0065] Of course, the inner wall of the guide hole 1091 may also be wavy or straight.

[0066] See also Figures 9 to 13 The cooler 90 of this embodiment is held in the cooling groove 101 , and a supporting rib 50 a is provided in the thermostat body 10 for positioning and supporting the cooler 90 .

[0067] Please continue to see Figures 9 to 13The cooler 90 includes a plurality of hollow cooling plates 91 parallel to each other and a connecting seat 92 connected between two adjacent cooling plates 91. The connecting seat 92 has a conducting cavity 921. The interior of the cooling plate 91 is sequentially connected with the conducting cavity 921 to form a cooling channel. The cooling channel has a cooling liquid inlet 90a and a cooling liquid outlet 90b located at both ends thereof. The cooling liquid inlet 90a is connected to the upper assembly port, and the cooling liquid outlet 90b is connected to the lower assembly port 72. The cooling plate 91 has a plurality of strip-shaped prismatic structures 90c to increase the contact area with the fluid. In this embodiment, the number of multiple cooling plates 91 is but not limited to five, which are divided into a cooling head plate 91a, a cooling tail plate 91b and three cooling middle plates 91c therebetween. The cooling liquid inlet 90a is located at the upper end of the cooling head plate 91a (the upper end shown in the figure), and the cooling liquid outlet 90b is located at the lower end of the cooling tail plate 91b (the lower end shown in the figure). The cooling head plate 91a, the cooling tail plate 91b and the cooling middle plate 91c have the same shape, but the lengths of the cooling head plate 91a and the cooling tail plate 91b are longer than the cooling middle plate 91c. The cooling head plate 91a is sealed and docked with the upper assembly seat 50, and the cooling tail plate 91b is sealed and docked with the lower assembly seat 70. The number of the guide holes 1091 is but not limited to five, which correspond one-to-one to the five cooling plates 91 respectively.

[0068] from Fig.12 and 13 It can be seen that in this embodiment, the cooling plate 91 is but not limited to an aluminum alloy plate, and the cooling plate 91 includes two cooling fins 911 parallel to each other and two connecting fins 912 connected between the two cooling fins 911. The cooling fins 911 and the connecting fins 912 enclose a cooling plate 91 with a square cross section, and a plurality of the prismatic structures 90c are formed on each cooling fin 911. It is easy to understand that by providing a plurality of strip-shaped prismatic structures 90c, the contact area with the coolant and blood can be increased, the cooling area can be increased, and the cooling effect can be improved.

[0069] Of course, the cross section of the cooling fin 911 may also be wavy.

[0070] See also Fig.12 and 13 In this embodiment, the surface of the cooling fin 911 has a transverse direction (the X-axis direction shown in the figure, hereinafter collectively referred to as the transverse direction) and a longitudinal direction (the Z-axis direction shown in the figure, hereinafter collectively referred to as the longitudinal direction) perpendicular to each other, and a plurality of prismatic structures 90c are arranged side by side in a direction parallel to the transverse direction, and each prismatic structure 90c is extended in a direction parallel to the longitudinal direction. It can be understood that a plurality of prismatic structures 90c are connected to form the cooling fin 911, and the strip-shaped prismatic structures 90c extend in parallel to the longitudinal direction, and their outer surface can guide the cooling liquid flowing from top to bottom, and the inner surface can move the blood flowing up and down to ensure the stability of the fluid flow.

[0071] In other embodiments, a plurality of prismatic structures 90c are arranged side by side in a direction parallel to the longitudinal direction, and each prismatic structure 90c is extended in a direction parallel to the transverse direction.

[0072] Specifically, each cooling fin 911 includes a plurality of first sheets 913 and a plurality of second sheets 914, and an angle is formed between the first sheets 913 and the second sheets 914; the plurality of first sheets 913 and the plurality of second sheets 914 are alternately arranged and fixedly connected, and adjacent first sheets 913 and second sheets 914 constitute a prismatic structure 90c, and an edge is formed at the connection between the first sheets 913 and the second sheets 914.

[0073] In other embodiments, adjacent prismatic structures 90c are arranged at intervals.

[0074] from Fig.10 , 12 As can be seen from Figures 13, in this embodiment, the connection seat 92 includes a seat body 922, and the seat body 922 has a connection groove 923 for the end of the cooling plate 91 to be placed and sealed with the cooling plate 91. In this embodiment, a cover plate 924 is connected to the seat body 922, and the cover plate 924 is connected to the seat body 922 and encloses to form a conduction cavity 921. The cover plate 924 and the seat body 922 can be tightly fitted or bonded, so that the structure is compact and easy to install.

[0075] from Fig.10 , 12 As can be seen from Figures 13, in this embodiment, a plurality of protruding pieces 925 are arranged in the connection groove 923 of the seat body 922 to abut against the inner wall of the cooling plate 91. The protruding pieces 925 are integrally formed on the seat body 922, and the plurality of protruding pieces 925 are arranged at intervals in a direction parallel to the transverse direction. When the seat body 922 is connected to the cooling plate 91, the protruding pieces 925 are placed in the cooling plate 91 to prevent the cooling plate 91 from collapsing.

[0076] See also Fig.14 and 15 The blood thermostat 100 of this embodiment includes a thermostat body 10 and a fixing device 20. The thermostat body 10 includes an outer frame 60. The outer frame 60 can be made of transparent glass or plastic material to facilitate observation of the interior of the thermostat body 10.

[0077] See also Fig.14 and 15The fixing device 20 includes a fixing seat 21, a hanging bracket 22 and an external fixing plate 23. The external fixing plate 23 is connected and fixed to the outer frame 60 of the thermostat body 10 by screws, buckles and other existing fixing methods. The fixing seat 21 is used to fix the thermostat body 10 on the first columnar external support 201, and the hanging bracket 22 is used to hang the thermostat body 10 on the (horizontally extendable) second external support 202; the external fixing plate 23 is connected and fixed to the fixing seat 21 and the hanging bracket 22 respectively. It can be understood that the blood thermostat 100 is fixed and supported on the external support in a clinical environment by a selected method through the fixing seat 21 and the hanging bracket 22 of the fixing device 20, thereby realizing the installation and fixation of the blood thermostat 100.

[0078] See also Fig.14 and 15 The fixing seat 21 has a locking groove 211 for the first external support 201 to slide in and out, and a main fastener 24 is provided on the fixing seat 21 to connect with the first external support 201 in the locking groove 211 and keep the fixing seat 21 on the first external support 201. In this embodiment, the first external support 201 is but not limited to a cylinder, which is arranged vertically (i.e., arranged perpendicular to the ground), and the diameter of the first external support 201 is 20 to 36 mm. The fixing seat 21 has a locking groove 211 for the first external support 201 to slide in and out, and a main fastener 24 is provided on the fixing seat 21 to connect with the first external support 201 in the locking groove 211 and keep the fixing seat 21 on the first external support 201, and the main fastener 24 is but not limited to a screw, and the main fastener 24 is threadedly connected to the fixing seat 21. It is easy to understand that by twisting the main fastener 24 to rotate, the first external support 201 is compressed or loosened, so that the height position of the blood thermostat 100 can be adjusted up and down, and the installation and fixing are convenient.

[0079] In other embodiments, the main fastener 24 is elastically mounted on the fixing seat 21 , and a hole for inserting the main fastener 24 is formed on the first external support 201 .

[0080] See also Fig.14 and 15The outer fixing plate 23 includes a first plate body 231 fixed on the outer wall of the thermostat body 10 and a second plate body 232 connected to the first plate body 231 and bent outward from the first plate body 231. The fixing seat 21 is provided with a slot 212 for the second plate body 232 to slide in and out. The fixing seat 21 is provided with an auxiliary fastener for connecting with the second plate body 232 in the slot 212 and holding the second plate body 232 on the fixing seat 21. In this embodiment, the first plate body 231 is semi-enclosedly sleeved on the outer wall fixed to the outer frame 60, and the second plate body 232 is placed in the slot 212 of the fixing seat 21, and then fixed by the auxiliary fastener 25, which is but not limited to a screw, and the auxiliary fastener 25 is threadedly connected with the fixing seat 21. It can be understood that by twisting the auxiliary fastener 25 to rotate, the second plate 232 is tightened or loosened. In this way, the frame connected to the external fixing plate 23 can be fixed and detached independently of the fixing base 21. When the thermostat body 10 needs to be removed, the auxiliary fastener 25 can be twisted to separate it from the fixing base 21, and there is no need to remove the fixing base 21 from the first external support 201, which is convenient for use.

[0081] In other embodiments, the first plate body 231 may also be a straight plate or a frame.

[0082] See also Fig.14 and 15 The second external support 202 may be a hook with a circular cross section, or a horizontally arranged circular steel wire strip, and the diameter of the second external support 202 is 2 mm to 10 mm. In this embodiment, the hanging bracket 22 is made of but not limited to metal, and includes two fastening parts 221 respectively connected and fixed to the external fixing plate 23 and a hanging part 222 connected between the two fastening parts 221. The operator can conveniently hang the blood thermostat 100 at a suitable position through the hanging bracket 22, so as to facilitate the carrying and storage of the blood thermostat 100.

[0083] See also Fig.14 and 15 In this embodiment, the fastening portion 221 is arched and includes two fastening legs 223 respectively connected and fixed to the outer fixing plate 23. In this way, the thermostat body 10 and the suspension bracket 22 can be prevented from rotating, thereby providing structural stability.

[0084] See also Fig.14 and 15 In this embodiment, an inner fixing plate 26 is provided inside the outer frame 60 of the thermostat body 10, and the thermostat body 10, the suspension bracket 22, the outer fixing plate 23, and the inner fixing plate 26 are connected and fixed by a suspension fastener 27, and the suspension fastener 27 is but not limited to a screw. It should be noted that by adding an additional inner fixing plate 26, the thickness of the outer frame 60 can be reduced and the connection reliability can be ensured.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A blood temperature changer, characterized in that: The blood thermostat comprises a thermostat body, the thermostat body having an exhaust groove, a cooling groove independent of the exhaust groove, a cooling liquid inlet, a cooling liquid outlet, a gas outlet connected to the exhaust groove, a blood inlet and a blood outlet, a cooler having a cooling channel is arranged in the cooling groove, the blood inlet, the exhaust groove, the cooling channel and the blood outlet are connected in sequence, and the cooling liquid inlet, the cooling groove and the cooling liquid outlet are connected in sequence; The cooling liquid inlet, the exhaust groove, the gas outlet, and the blood inlet are arranged at the top of the thermostat body, and the blood outlet and the cooling liquid outlet are arranged at the bottom of the thermostat body; The cooler comprises a plurality of hollow cooling plates parallel to each other and a connecting seat connected between two adjacent cooling plates, the connecting seat having a conduction cavity, the interior of the cooling plates being connected with the conduction cavity in sequence to form the cooling channel, the cooling channel having a cooling liquid inlet and a cooling liquid outlet located at both ends thereof, the cooling liquid inlet being connected to the exhaust groove, and the cooling liquid outlet being connected to the blood outlet; The plurality of cooling plates are divided into a cooling head plate, a cooling tail plate and a cooling middle plate therebetween. The cooling liquid inlet is located at the cooling head plate, and the cooling liquid outlet is located at the cooling tail plate.

2. The blood temperature changer according to claim 1, characterized in that: A guide plate is provided in the cooling groove of the thermostat body, and the guide plate divides the cooling groove into a guide cavity and a heat exchange cavity. Strip-shaped guide holes are formed on the guide plate for the cooler to pass through, and a preset gap for the coolant to flow is left between the inner wall of the guide hole and the outer wall of the cooler.

3. The blood temperature changer according to claim 1, characterized in that: The cooling plate has a plurality of strip-shaped prismatic structures to increase the contact area with the fluid; the cooling plate includes two cooling fins parallel to each other and two connecting fins connected between the two cooling fins, and a plurality of the prismatic structures are formed on each of the cooling fins; each cooling fin includes a plurality of first sheets and a plurality of second sheets, and the plurality of first sheets and the plurality of second sheets are alternately arranged, and adjacent first sheets and second sheets constitute the prismatic structure.

4. The blood temperature changer according to claim 1, characterized in that: The connecting seat comprises a seat body, wherein the seat body has a connecting groove for the end of the cooling plate to be placed therein and sealedly connected to the cooling plate; a plurality of convex protrusions are arranged in the connecting groove of the seat body for abutting against the inner wall of the cooling plate.

5. The blood temperature changer according to claim 1, characterized in that: The blood thermostat further comprises an exhaust valve arranged on the top of the thermostat body, wherein the exhaust valve comprises an air inlet, a first exhaust port and a second exhaust port, and the air inlet is connected to the gas outlet.

6. The blood temperature changer according to claim 5, characterized in that: The exhaust valve includes a valve body and an operating member connected to each other, the valve body includes a valve seat and an air intake connector, a first exhaust connector and a second exhaust connector respectively connected to the valve seat, the air intake connector is connected to the thermostat body, the air inlet is located at the outer end of the air intake connector, the first exhaust port is located at the outer end of the first exhaust connector, and the second exhaust port is located at the outer end of the second exhaust connector.

7. The blood temperature changer according to claim 1, characterized in that: The thermostat body includes a top cover and an upper assembly seat, and the top cover and the upper assembly seat are connected, fixed and enclosed to form the exhaust groove; the top cover includes a head, an annular foot located below the head and connected to the upper assembly seat, and an annular wall extending downward from the outer periphery of the head to the foot; the annular wall includes a straight wall portion extending vertically downward from the head to the foot and an inclined wall portion extending downward and outward from the head to the foot, and the blood inlet is formed on the straight wall portion.

8. The blood temperature changer according to claim 1, characterized in that: It also includes a fixing device, which includes a fixing seat for fixing the thermostat body on a first columnar external support, a hanging bracket for hanging the thermostat body on a second external support, and an external fixing plate fixed to the thermostat body; the external fixing plate is respectively connected and fixed to the fixing seat and the hanging bracket.

9. The blood temperature changer according to claim 1, characterized in that: The thermostat body comprises an upper assembly seat, an outer frame and a lower assembly seat, wherein the upper assembly seat, the outer frame and the lower assembly seat are connected in sequence to enclose the cooling groove; the upper assembly seat has an inlet for coolant to enter the cooling groove and an upper assembly port for connecting to one end of the cooling channel, and the lower assembly seat has an outlet for coolant to flow out of the cooling groove and a lower assembly port for connecting to the other end of the cooling channel; an upper clamping portion is formed on the upper assembly seat, a lower clamping portion is formed on the lower assembly seat, an upper clamping fitting portion that is engaged with the upper clamping portion and a lower clamping fitting portion that is engaged with the lower clamping portion are formed on the side wall of the outer frame, and sealing components are provided between the upper assembly seat and the outer frame and between the lower assembly seat and the outer frame.

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