WO2020177149A1 - Blood pump and cardiopulmonary bypass system - Google Patents

Abstract

A blood pump (1). The blood pump (1) comprises a pump head driving device (10), a pump head (11) and a pump head adapter (12). The pump head adapter has a first identification element (14). The pump head driving device has a second identification element (15). The second identification element identifies the first identification element and generates an identification result. The pump head driving device controls a manner in which the pump head operates according to the identification result. Also disclosed is a cardiopulmonary bypass system using the blood bump. The device can assist operations performed by medical personnel, and facilitate reducing erroneous operations.

Description

Blood pump and cardiopulmonary bypass system Technical field

The invention relates to the field of medical equipment used for extracorporeal life support, and in particular to a blood pump and a cardiopulmonary bypass system.

Background technique

The cardiopulmonary bypass system, also known as extracorporeal membrane oxygenation (ECMO), is a mechanical circulation assist technology that can be inserted percutaneously. The cardiopulmonary bypass system usually consists of three parts: a control host, a centrifugal pump head and a membrane oxygenator. The control host controls and monitors the operation of the cardiopulmonary bypass system. The centrifugal pump head is used to circulate the blood inside and outside the body, and the membrane oxygenator is used to provide oxygen and exchange carbon dioxide in the blood discharged from the body. The cardiopulmonary bypass system mainly drains the venous blood in the patient's body to the outside of the body, and the blood that passes through the membrane oxygenator to oxygen and remove carbon dioxide from the blood is returned to the patient's body. According to the different ways of blood reinfusion, the cardiopulmonary bypass system mainly has two forms: vein to vein (venovenous ECMO, VV-ECMO) and vein to artery (venous-arterial ECMO, VA-ECMO). The former only has a respiratory assist function. The latter has both circulation and breathing assistance.

At present, the blood pump includes a pump head driver and a pump head. The pump head is connected with the pump head driver, but there are many specifications of the pump head. Each type of pump head has a corresponding pump head driver, that is, each type of pump head Form a set of blood pumps with the corresponding pump head driver. Each type of pump head has different usage rules, such as rotation direction or rotation speed. As the specifications of the pump head increase, blood pumps of multiple specifications will be formed. Medical personnel need to spend a long time familiar with the specifications of multiple blood pumps, and misoperation problems may easily occur during use.

Summary of the invention

The embodiment of the present invention provides a blood pump and a cardiopulmonary bypass system to solve the problem of multiple specifications of blood pumps. Medical personnel need to be familiar with the operation of each specification of blood pumps, which is prone to misoperation.

In order to solve the above technical problems, the present invention is implemented as follows:

In a first aspect, a blood pump is provided, which includes a pump head driver, a pump head, and a pump head adapter. The pump head adapter connects the pump head driver and the pump head. The pump head adapter has a first identification element. The head driver has a second identification element corresponding to the first identification element. The second identification element recognizes the first identification element and generates an identification result. The pump head driver controls the action of the pump head according to the identification result.

In the second aspect, a cardiopulmonary bypass system is provided, which uses the blood pump described in the first aspect.

In the embodiment of the present invention, the blood pump of the present invention is provided with a first identification element on the pump head adapter, and a second identification element on the pump head driver. The first identification element is identified by the second identification element to control the pump head The driver drives the pump head to move, which can assist medical personnel in operation and reduce the problem of misoperation.

Description of the drawings

The drawings described here are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Figure 1 is a perspective view of a blood pump according to a first embodiment of the present invention;

Figure 2 is an exploded view of the blood pump of the first embodiment of the present invention;

Figure 3 is a cross-sectional view of the blood pump of the first embodiment of the present invention;

4 is a cross-sectional view of the blood pump according to the second embodiment of the present invention;

Fig. 5 is a cross-sectional view of a blood pump according to a third embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Please refer to Figures 1 and 2, which are a perspective view and an exploded view of the blood pump of the first embodiment of the present invention; as shown in the figure, the blood pump 1 of this embodiment includes a pump head driver 10, a pump head 11, and a pump head The pump head adapter 12 of the driver 10 and the pump head 11 has a first connecting piece 121 and a second connecting piece 122, and the first connecting piece 121 penetrates the second connecting piece 122. The first connector 121 is connected with the pump head driver 10, and the second connector 122 is connected with the pump head 11. The first connecting member 121 is driven by the pump head driver 10, and the first connecting member 121 can rotate relative to the second connecting member 122, so that the pump head 11 starts to operate. The structure of the pump head adapter 12 is determined according to the specifications of the pump head 11. When replacing the pump head 11 of another specification, only the pump head 11 and the pump head adapter 12 need to be replaced, and there is no need to replace the new pump head driver 10. . The structure corresponding to the structure of each pump head adapter 12 and the pump head 11 is different according to the specifications of the pump head 11, and the connection structure of each pump head adapter 12 and the pump head driver 10 is fixed.

The above-mentioned pump head adapter 12 has a first identification element 14, and the pump head driver 10 has a second identification element 15. The second identification element 15 is used to identify the first identification element 14 and generate an identification result, which shows the pump head 11 The operating rules of the system, such as the direction of rotation, the speed of rotation, the parameters of pulsation drive, or the parameters of automatically achieving zero flow. The pump head driver 10 controls the action of the first connector 121 according to the identification result, and then controls the action of the pump head 11. The blood pump 1 further includes a controller 13 which is electrically connected to the motor 102 of the pump head driver 10 and the second identification element 15. The controller 13 controls the action of the motor 102 according to the identification result. The controller 13 can be optionally arranged in the drive housing 101 of the pump head driver 10, or can be arranged separately from the pump head driver 10, and transmits signals with the motor 102 and the second identification element 15 in a wired or wireless manner.

In this embodiment, the first identification element 14 is an electronic tag, such as an RFID tag or a two-dimensional code, which is disposed on the surface of the pump head adapter 12 facing the pump head driver 10. The second identification element 15 is determined according to the specifications of the first identification element 14. It can be an RFID reader or a two-dimensional code reader, which is provided in the pump head driver 10 and corresponds to the first identification element 14 to identify the first identification element 14. Identification element 14. Of course, the above is only an embodiment of the present invention. The positions of the first identification element 14 and the second identification element 15 can be changed according to requirements, as long as the first identification element 14 is installed on the pump head adapter 12, and the second identification element 15 Just set it on the pump head driver 10.

The second identification element 15 identifies the first identification element 14 and generates an identification signal. The second identification element 15 transmits the identification signal to the controller 13. The controller 13 generates a control signal according to the identification signal and transmits the control signal to the motor 102. According to the control signal, the first connecting member 121 is driven to rotate, and the first connecting member 121 drives the pump head 11 to act.

Please also refer to FIG. 3, which is a cross-sectional view of the blood pump according to the first embodiment of the present invention; as shown in the figure, the pump head 11 includes a housing 111 and an impeller 112 arranged in the housing 111. The housing 111 has a blood input The tube 1111 and the blood output tube 1112, the blood input tube 1111 is located above the impeller 112, and the blood output tube 1112 is located on the periphery of the impeller 112. The operation of the pump head 11 is that blood enters the housing 111 from the blood input tube 1111, the blood passes through the rotating impeller 112 to produce centrifuged blood, and the centrifuged blood flows out from the blood output tube 1112. The rotation of the impeller 112 in the pump head 11 is driven by the pump head driver 10.

The bottom of the impeller 112 has a driving part 1121, which is only an embodiment of the present invention. The driving part 1121 is not limited to be disposed at the bottom of the impeller 112, and it can be disposed on the side of the impeller 112. When the pump head 11 is arranged in the second connecting member 122, the driving portion 1121 of the pump head 11 and the first connecting member 121 are in contact connection or non-contact connection, and the contact connection is the driving portion of the pump head 11. 1121 and the first connecting member 121 are connected by a mechanical structure. For example, the driving part 1121 is a convex post, and the first connecting part 121 has a groove corresponding to the driving part 1121. The driving part 1121 which is a convex post is inserted in the In the groove of a connecting member 121, the first connecting member 121 is connected with the driving portion 1121 of the pump head 11 to drive the impeller 112 of the pump head 11 to rotate. The non-contact connection is magnetic coupling or electromagnetic coupling. For example, the driving part 1121 has a magnetic body (not shown), and the first connecting member 121 has a plurality of magnetic bodies 1210 corresponding to the driving part 1121. The polarity relationship between the plurality of magnetic bodies 1210 of the element 121 and the magnetic bodies of the driving portion 1121 drives the impeller 112 of the pump head 11 to rotate. In this embodiment, a magnetic coupling is adopted between the driving portion 1121 of the pump head 11 and the first connecting member 121.

The second connecting member 122 in this embodiment is a fixed base body, the fixed base body has an accommodating groove 1221, and the bottom of the accommodating groove 1221 has a perforation 1222. The first connecting member 121 includes a driving turntable 1211 and a connecting rotating shaft 1212. The connecting rotating shaft 1212 is disposed on the surface of the driving turntable 1211, and the center point of the driving turntable 1211 is located on the central axis of the connecting rotating shaft 1212. A plurality of magnetic bodies 1210 are embedded in the driving turntable 1211. In this embodiment, the driving turntable 1211 has a positioning groove 1214, and the plurality of magnetic bodies 1210 are arranged in the sidewall of the positioning groove 1214 at intervals.

The pump head driver 10 includes a drive housing 101 and a motor 102. The drive housing 101 has a mounting portion 1011. In this embodiment, the mounting portion 1011 is an opening. The motor 102 is disposed in the drive housing 101, the motor 102 has a core shaft 1021, and the core shaft 1021 faces the mounting portion 1011. A connecting joint 103 is provided on one end of the mandrel 1021 facing the mounting portion 1011, and both ends of the connecting joint 103 have connecting holes 1031 respectively. The end of the mandrel 1021 facing the mounting portion 1011 is inserted into the connecting hole 1031 at one end of the connecting joint 103, so that the connecting joint 103 is installed on the end of the mandrel 1021 facing the mounting portion 1011.

When the pump head adapter 12 is connected to the pump head driver 10, the second connecting member 122 is first set on the pump head driver 10 and is set on the mounting portion 1011, and the through hole 1222 corresponds to the other connecting hole 1031 of the connecting joint 103. The connecting shaft 1212 of the first connecting member 121 passes through the through hole 1222 and is inserted into the corresponding connecting hole 1031, while the drive turntable 1211 is located in the accommodating groove 1221, and the central axis of the connecting shaft 121 and the central axis of the core shaft 1021 are located at the same on-line. The connection between the spindle 1021 of the motor 102 and the connecting shaft 1212 of the first connecting member 121 is through the connection joint 103. Of course, the spindle 1021 and the connecting shaft 1212 can be directly connected, for example, the spindle 1021 is inserted into one end of the connecting shaft 1212 . The connection method of this embodiment can increase the stability of the connection between the core shaft 1021 and the connecting shaft 1212.

After completing the connection between the pump head adapter 12 and the pump head driver 10, the pump head 11 is assembled in the pump head adapter 12, and the bottom surface of the housing 111 of the pump head 11 abuts the surface around the receiving groove 1221 of the second connector 122 Above, the driving part 1121 of the impeller 112 enters the positioning groove 1214 of the first connecting part 121 through the receiving groove 1221 of the second connecting part 122. The second connecting part 122 is used to support the pump head 11 so that the driving part 1121 and the first The driving part 1121 capable of non-contact driving of the pump head 11 between the rotating discs 1211 of the connecting member 121 is located in the positioning groove 1214. The polarity, number, and position of the magnetic body 1210 of the drive turntable 1211 are determined by the polarity, position, and number of the magnetic body embedded in the drive portion 1121. The magnetic body 1210 of the drive turntable 1211 is only set up here. An embodiment of the invention should not be limited thereto.

After completing the assembly of the blood pump 1, the motor 102 of the pump head driver 10 drives the first connecting member 101 to rotate through the connection of the spindle 1021 and the connecting shaft 1212. The multiple magnetic bodies 1210 of the first connecting member 121 and the driving part 1121 A plurality of magnetic bodies act to drive the impeller 112 of the pump head 11 to rotate. The above-mentioned positioning groove 1214 mainly prevents the pump head 11 from easily detaching from the first connecting member 121 during operation.

In specific applications, the bottom of the second connecting member 122 also has a positioning protrusion 1223, and the perforation 1222 at the bottom of the accommodating groove 1221 penetrates the positioning protrusion 1223. When the second connecting member 122 is disposed on the drive housing 101 of the pump head driver 10 , The positioning convex portion 1223 is directly arranged in the mounting portion 1011, and no additional positioning action is required. A bearing 1224 is provided between the connecting shaft 1212 and the through hole 1222 of the first connecting member 121, so that the connecting shaft 1212 can smoothly rotate in the through hole 1222.

There is a gap between the side surface of the driving part 1121 and the side wall of the positioning groove 1214 and between the side surface of the turntable 1211 and the side wall of the accommodating groove 1221, so as to avoid friction and friction between the driving part 1121 and the positioning groove 1214 during rotation. The turntable 1211 generates friction with the receiving groove 1221 during the rotation.

The top of the second connecting member 122 is provided with a limiting protrusion 1225. The limiting protrusion 1225 and the surface of the accommodating groove 1221 form a limiting groove 1226. The limiting groove 1226 is used for accommodating the casing 111 of the pump head 11 to avoid the pump The housing 111 of the head 11 rotates with the impeller 112. The limiting protrusion 1225 has a gap 12251 through which the blood output tube 1112 of the casing 111 of the pump head 11 penetrates. The limiting protrusion 1225 has a slot 12252 for accommodating the limiting member 1227. The end of the limiting member 1227 away from the slot 12252 is pressed against the surface of the casing 111 of the pump head 11 to prevent the pump head 11 from running along The direction perpendicular to the direction of rotation of the impeller 112 is separated from the pump head adapter 12. In specific applications, the outer periphery of the casing 111 of the pump head 11 is also provided with an abutting convex portion 1113, and the end of the limiting member 1227 away from the slot 12252 directly presses on the abutting convex portion 1113 to prevent the pump head 11 from being separated from the pump头Adapter12. The driving housing 101 of the pump head driver 10 of this embodiment is also provided with a carrying handle 1012, and the user holds the pump head driver 10 or the blood pump 1 through the carrying handle 1012, so as to achieve the effect of being portable.

Please refer to Figures 4 and 5, which are cross-sectional views of the blood pump of the second embodiment of the present invention; as shown in the figure, the blood pump 1 of this embodiment is different from the blood pump of the above-mentioned embodiment in that the pump head of the above-mentioned embodiment The action of the driver is electric drive, and the action of the pump head driver 10 of the present embodiment is manual drive, so the pump head 11 of the present embodiment can be driven by the manual pump head driver 10 in a power failure state. The mounting portion 1011 of the drive housing 101 of the pump head driver 10 of this embodiment is a groove, and the bottom of the mounting portion 1011 has an opening 10111. A rotating member 104 is installed in the driving housing 101 of the pump head driver 10, and the center point of the rotating member 104 and the center point of the opening 10111 are on the same line. The pump head driver 10 also includes a hand crank 105. The hand crank 105 has a connecting end 1051 and a driving end 1052 connected to the connecting end 1051. The connecting end 1051 of the hand crank 105 is connected to the rotating member 104, and the driving end The portion 1052 is located outside the driving housing 101, and the center point of the rotating member 104 is located on the central axis of the connecting end portion 1051.

When the pump head 11 is to be installed in the hand-operated pump head driver 10, the pump head adapter 12 is first installed in the mounting portion 1011 of the drive housing 101 of the pump head driver 10. The connection of the first connector 121 of the pump head adapter 12 The rotating shaft 1212 passes through the opening 10111 and is connected to the rotating member 104. Then set the pump head 11 in the pump head adapter 12. The above completes the assembly of the blood pump 1. The user only needs to drive the connecting end 1051 to rotate by driving the end 1052, the connecting end 1051 drives the rotating member 104 to rotate, and the rotating member 104 drives the first connecting member 121 of the pump head adapter 12 to rotate , The rotating first connecting member 121 drives the impeller 112 of the pump head 11 to rotate. A speed-increasing gear box (planetary gear structure) can also be arranged between the connecting end 1051 and the rotating member 104 to increase the rotating speed of the rotating member 104, so that the rotating speed of the first connecting member 121 driven by the rotating member 104 is increased to Meet the speed of the pump head 11 rotation.

The inner side of the mounting portion 1011 is provided with a positioning protrusion 10112. The positioning protrusion 10112 is used to press against the second connector 122 of the pump head adapter 12 to restrict the pump head adapter 12 in the mounting portion 1011 and avoid the pump head adapter. 12 is separated from the mounting part 1011 when in use. The number of the positioning protrusions 10112 is multiple. At least one of the positioning protrusions 10112 is fixed on the mounting portion 1011. The remaining positioning protrusions 10112 can be provided separately from the mounting portion 1011, and are provided on the positioning protrusion separately from the mounting portion 1011. The block 10112 can be installed at a predetermined position on the installation portion 1011 after the pump head adapter 12 is installed on the installation portion 1011. The structure separately provided on the positioning protrusion 10112 from the mounting portion 1011 may be the same as the structure of the stopper in the first embodiment or another structure, so that the pump head adapter 12 does not separate from the mounting portion 1011.

Since the rotation direction of the pump head 11 of each specification may be forward or reverse, the user must control the rotation direction of the rotating member 104 according to the specification of the pump head 11 in use. The drive housing 101 of the pump driver 10 of this embodiment is also provided with a steering restricting structure 106 that controls the steering of the rotating member 104. The steering restricting structure 106 is located on one side of the rotating member 104 to restrict the rotating member 104 from rotating in a single direction. . The turning restriction structure 106 is the second identification element and corresponds to the positioning protrusion 1223 of the pump head adapter 12, and the positioning protrusion 1223 is the first identification element located at the bottom of the second connector 122. The contact relationship between the first identification element and the second identification element changes the connection relationship between the second identification element and the rotating part 104 in the pump head driver 10, and the pump head driver 10 is based on the connection relationship between the second identification element and the rotating part 104 Drive the action of the pump head 11.

The steering restricting structure 106 has a first steering restricting member 1061 and a second steering restricting member 1062, and the first steering restricting member 1061 or the second steering restricting member 1062 is connected to the rotating member 104 according to the specifications of the pump head 11. The steering restricting structure 106 of this embodiment can automatically control the rotation direction of the rotating member 104 according to the specifications of the pump head 11. The following describes how the steering restricting structure 106 recognizes the specifications of the pump head 11.

In this embodiment, the inner edge of the mounting portion 1011 of the drive housing 101 also has a stepped portion 10113. The space in the mounting portion 1011 is divided into a first containing space 10115 and a second containing space 10116 by the stepped portion 10113. The space 10116 is located above the first accommodating space 10115, and the first accommodating space 10115 is connected to the second accommodating space 10116. When the pump head adapter 12 is installed in the mounting portion 1011, the second connector 122 of the pump head adapter 12 is located in the second receiving space 10116, and its bottom surface abuts on the body portion 10113, and the positioning protrusion at the bottom of the second connector 122 The portion 1223 (the first identification element) enters the first containing space 10115.

The steering restriction structure 106 also includes a linkage rod 1063. The linkage rod 1063 is connected in series with the first steering restriction member 1061 and the second steering restriction member 1062. The center points of the first steering restriction member 1061 and the second steering restriction member 1062 are located in the linkage The rod 1063 is on the center axis. The linkage rod 1063 can drive the first steering restricting member 1061 and the second steering restricting member 1062 to move in a direction parallel to the central axis of the rotating member 104 in the drive housing 101. One end of the linkage rod 1063 protrudes from the bottom of the mounting portion 1011 and is located in the first receiving space 10115. The height of the linkage rod 1063 protruding from the bottom of the mounting portion 1011 is smaller than the height of the side wall of the first receiving space 10115. The initial position of the steering restricting structure 106 is that one end of the linkage rod 1063 protrudes from the bottom of the mounting portion 1011, the first steering restricting member 1061 is connected to the rotating member 104, and the first steering restricting member 1061 restricts the rotating member 104 in the first direction ( Clockwise) rotate.

If the rotation direction of the pump head 11 is to rotate along the first direction, the initial position of the steering restricting structure 106 must be maintained, which also means that the positioning protrusion 1223 located in the first accommodating space 10115 cannot push the position in the first accommodating space 10115 The linkage rod 1063, in other words, the height of the positioning protrusion 1223 parallel to the central axis of the limiting protrusion is less than or equal to the height of the side wall of the first accommodation space 10115 and the height of the linkage rod 1063 protruding from the bottom of the mounting portion 1011 The difference. If the rotation direction of the pump head 11 is to rotate in the second direction (counterclockwise), the linkage rod 1063 must drive the second steering restricting member 1062 to move away from the mounting portion 1011, so that the second steering restricting member 1062 and The rotating member 104 is connected, and the second turning restricting member 1062 restricts the rotating member 104 from rotating in the second direction. In order to enable the linkage rod 1063 to drive the second steering restriction member 1062 to move away from the mounting portion 1011, one end of the linkage rod 1063 is pushed by the positioning protrusion 1223 located in the first accommodation space 10115, so the positioning protrusion 1223 is parallel to The height of the central axis of the positioning protrusion 1223 is greater than the difference between the height of the side wall of the first accommodating space 10115 and the height of the linkage rod 1063 protruding from the bottom of the mounting portion 1011, and is even equal to the height of the side wall of the first accommodating space 10115. In summary, the pump head driver 10 drives the rotation direction of the impeller 112 according to the connection relationship between the steering restricting structure 106 and the rotating member 104. The connecting relationship between the steering restricting structure 106 and the rotating member 104 is through the contact relationship between the positioning protrusion 1223 and the steering restricting structure 106. And change.

It can be seen from the above that the height design of the positioning protrusion 1223 realizes that the steering restriction structure 106 automatically restricts the rotation direction of the rotating member 104 according to the specifications of the pump head 11, in other words, the steering restriction is converted by the positioning protrusion 1223 of the second connecting member 122 The structure 106 restricts the rotation direction of the rotating member 104. The rotating member 104 in this embodiment is a gear, the first steering limiting member 1061 and the second steering limiting member 1062 are each one-way bearings, and the first steering limiting member 1061 or the second steering limiting member 1062 is meshed and connected with the rotating member 104, The first steering restricting member 1061 or the second steering restricting member 1062 restricts the rotation of the rotating member 104 in a single direction. The rotating member 104, the first steering restricting member 1061, and the second steering restricting member 1062 may have other structures, such as a ratchet wheel and a pawl, which only need to achieve the above-mentioned functions.

The end of the linkage rod 1063 of this embodiment away from the mounting portion 1011 is further provided with an elastic member 1064. The end of the elastic member 1064 away from the linkage rod 1063 is fixed in the drive housing 1011. When the linkage rod 1063 passes through the positioning protrusion 1223 When the drive housing 101 is pushed inside, the linkage rod 1063 compresses the elastic member 1064. After the positioning convex portion 1223 leaves the first receiving space 10115, the elastic force generated by the compression of the elastic member 1064 drives the linkage rod 1063 to move to the mounting portion 1011, so that the steering restricting structure 106 returns to its original position and achieves an automatic reset function.

The present invention also provides a cardiopulmonary bypass system. The cardiopulmonary bypass system includes the blood pump using the above-mentioned embodiments.

In summary, the present invention provides a blood pump and a cardiopulmonary bypass system. The structure of the pump head adapter is determined by the specifications of the pump head, that is, each pump head of each specification has a corresponding pump head adapter. The blood pump of the present invention is provided with a first identification element on the pump head adapter and a second identification element on the pump head driver. The first identification element is identified by the second identification element to control the pump head driver to drive the pump head to act. This can assist medical personnel in operation and reduce the problem of misoperation.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element.

The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, without departing from the purpose of the present invention and the scope of protection of the claims, many forms can be made, which all fall within the protection of the present invention.

Claims (15)

A blood pump, characterized in that it comprises a pump head driver, a pump head and a pump head adapter, the pump head adapter connects the pump head driver and the pump head, the pump head adapter has a first identification element, and The pump head driver has a second identification element that recognizes the first identification element and generates an identification result, and the pump head driver controls the action of the pump head according to the identification result. The blood pump according to claim 1, wherein the second identification element reads the first identification element, the second identification element generates an identification signal, and the pump head driver controls according to the identification signal The action of the pump head. The blood pump according to claim 2, further comprising a controller electrically connected to the motor of the pump head driver and the second identification element, and the controller receives the identification signal , And control the action of the motor according to the identification signal to control the action of the pump head. The blood pump according to claim 2, wherein the first identification element is an electronic tag, and the second identification element is an electronic tag reader. The blood pump according to claim 1, wherein the contact relationship between the first identification element and the second identification element changes the connection between the second identification element and the rotating member in the pump head driver The pump head driver drives the pump head according to the connection relationship between the second identification element and the rotating part. The blood pump according to claim 5, wherein the pump head adapter comprises a first connecting piece and a second connecting piece, the first connecting piece passes through the second connecting piece, and the first connecting piece A connecting piece is connected with the pump head driver, the second connecting piece is connected with the pump head, and the pump head driver drives the first connecting piece to rotate relative to the second connecting piece. The connecting piece drives the pump head to act, the first identification element is arranged at the bottom of the second connecting piece, the pump head driver includes a drive housing, the drive housing has a mounting portion, and the rotating piece Is arranged in the drive housing, the rotating member corresponds to the mounting portion, the second identification element is arranged in the drive housing, is connected to the rotating member, and protrudes from the bottom of the mounting portion Out, the second identification element corresponds to the first identification element. The blood pump according to claim 6, wherein the mounting portion has a first accommodating space and a second accommodating space located above the first accommodating space, and the second connecting member is located in the second accommodating space. In the accommodation space, the first identification element is located in the first accommodation space, and an end of the second identification element protruding from the bottom of the mounting portion is located in the first accommodation space. The blood pump according to claim 7, wherein the height of the first identification element is less than or equal to the height of the side wall of the first accommodation space and the second identification element protrudes from the bottom of the mounting portion The first identification element is not in contact with the second identification element, and the second identification element restricts the rotation of the rotating member in the first direction. The blood pump according to claim 7, wherein the height of the first identification element is greater than the height of the side wall of the first containing space and the height of the second identification element protruding from the bottom of the mounting portion The height difference, the first identification element is in contact with the second identification element, and the second identification element restricts the rotation of the rotating member in the second direction. The blood pump according to claim 6, wherein the second identification element includes a linkage rod, a first steering restriction member and a second steering restriction member, and the linkage rod is connected in series with the first steering restriction One end of the second steering restricting member and the second steering restricting member is located in the first accommodating space and corresponds to the first identification element. The rotating member is based on the connection relationship between the first identification element and the linkage rod Connected to the first steering restricting member or the second steering restricting member, the first steering restricting member is used to restrict the rotation of the rotating member in a first direction, and the second steering restricting member is used to restrict the The rotating member rotates in a second direction, and the first direction is opposite to the second direction. The blood pump of claim 10, wherein an end of the linkage rod away from the mounting portion is provided with an elastic member, and an end of the elastic member away from the linkage rod is fixed to the drive housing bottom of. The blood pump according to claim 6, wherein the pump head driver further comprises a hand crank, one end of the hand crank is connected to the rotating part, and one end of the hand crank is away from the rotating part Located outside the drive housing. The blood pump according to claim 1, wherein the pump head comprises a housing and an impeller arranged in the housing, the impeller has a driving part, and the pump head is arranged at the second connecting member Inside, there is a non-contact connection or a contact connection between the driving part and the first connecting member. The blood pump according to claim 13, wherein the non-contact connection is magnetic coupling or electromagnetic coupling. A cardiopulmonary bypass system, characterized in that the blood pump according to any one of claims 1-14 is used.

Images