A device and method for accurately adjusting the compression of left and right hearts during extracorporeal circulation

Abstract

The present invention discloses a device and method for accurately adjusting the compression tightness of the left and right hearts during extracorporeal circulation, and relates to the technical field of medical devices. The device for accurately adjusting the compression tightness of the left and right hearts during extracorporeal circulation comprises a first connector, a sterile saline bag, a first pipeline, a first flow stopper, a second connector, and a second pipeline; the first connector is suitable for being installed on the liquid inlet pipeline of a roller pump; the liquid outlet end of the sterile saline bag is connected to the first connector through the first pipeline; the first flow stopper is suitable for being arranged on the liquid inlet pipeline of the roller pump and clamping the blood inlet end of the first connector; the second connector is suitable for being installed on the liquid outlet pipeline of the roller pump, and the second connector is detachably connected to the pulmonary membrane through the second pipeline; the second flow stopper is suitable for being arranged on the liquid outlet pipeline of the roller pump and clamping the bleeding end of the second connector. The present invention provides a device and method for accurately adjusting the compression tightness of the left and right hearts during extracorporeal circulation, which greatly improves the accuracy and convenience of adjusting the compression tightness of the left and right hearts during extracorporeal circulation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a device for regulating the compression degree of left and right hearts during extracorporeal circulation. Background Art

[0002] With the rapid development of extracorporeal circulation technology in China, the quality of extracorporeal circulation is also rapidly improving. However, cardiac surgery is becoming increasingly complex, and the requirements for perfusionists' operation are becoming more and more sophisticated. Adjusting the compression of the roller pump for extracorporeal circulation is becoming increasingly important. If it is too tight, it will cause blood damage; if it is too loose, it will cause ineffective circulation.

[0003] The main pump is relatively easy to control, requiring coarse adjustments followed by fine adjustments. This is relatively accurate, and the adjustment techniques are relatively mature. However, the compression of the left and right heart roller pumps varies from one perfusionist to another, resulting in varying compression levels. This discrepancy between the left and right heart compression levels is a key cause of hemoglobinuria during extracorporeal circulation.

[0004] In view of this, it is necessary to standardize the compression adjustment method of the roller pump to improve the accuracy and convenience of adjusting the compression of the left and right hearts during extracorporeal circulation. Summary of the Invention

[0005] The main purpose of the present invention is to provide a device and method for accurately adjusting the compression degree of the left and right hearts during extracorporeal circulation, aiming to improve the accuracy and convenience of adjusting the compression degree of the left and right hearts during extracorporeal circulation.

[0006] To achieve the above objectives, the present invention provides a device and method for accurately adjusting the compression of the left and right hearts during extracorporeal circulation, the device comprising:

[0007] The first connector is suitable for installation on the liquid inlet pipeline of the roller pump;

[0008] a sterile saline bag, the liquid outlet of which is connected to the first connector via a first pipe;

[0009] a first flow stopper, adapted to be disposed on the liquid inlet pipeline of the roller pump and to clamp the blood inlet end of the first connector;

[0010] a second connector adapted to be mounted on the liquid outlet pipeline of the roller pump, the second connector being detachably connected to the pulmonary membrane via a second pipeline; and

[0011] The second flow-stopping member is suitable for being arranged on the liquid outlet pipeline of the roller pump and clamping the bleeding end of the second connector.

[0012] Optionally, the sterile saline bag and the first pipe connected thereto are arranged perpendicular to a horizontal plane.

[0013] Optionally, the second pipe is at least partially arranged perpendicular to the horizontal plane.

[0014] Optionally, the first flow stopper and the second flow stopper are both pipe clamps.

[0015] Optionally, the second pipe is a double-male infusion tube.

[0016] Optionally, the sterile saline bag is provided with a scale line for observing the current liquid level height.

[0017] Optionally, the device further comprises a controller, which is electrically connected to the motor of the roller pump and is used to control the operation of the roller pump.

[0018] Optionally, the device further comprises a pressure sensor electrically connected to the controller, and the pressure sensor is provided on the liquid inlet pipeline of the roller pump.

[0019] To achieve the above-mentioned object, the present invention further proposes a compression adjustment method, based on the above-mentioned device for accurately adjusting the compression of the left and right hearts during extracorporeal circulation, the compression adjustment method comprises the following steps:

[0020] A first connector and a second connector are installed on the liquid inlet pipe and the liquid outlet pipe of the roller pump respectively;

[0021] connecting a sterile saline bag to the first connector via a first pipe;

[0022] Connecting the first end of the second conduit to the second connector, and connecting the second end of the second conduit to the membrane lung;

[0023] Clamping the first flow stopper and the second flow stopper on the liquid inlet pipe and the liquid outlet pipe of the roller pump respectively;

[0024] rotating the roller pump until the saline in the sterile saline bag flows into the second pipe and fills it;

[0025] detaching the second end of the second tube from the membrane lung;

[0026] erecting the entire second pipeline;

[0027] The compression of the roller pump is adjusted until the liquid level in the second pipeline remains unchanged.

[0028] Optionally, after the step of adjusting the compression of the roller pump until the liquid level in the second pipeline remains unchanged, the method further includes:

[0029] Reversing the roller pump to allow the saline in the inlet and outlet pipes of the roller pump, the first pipe, and the second pipe to flow back into the sterile saline bag;

[0030] Remove the sterile saline bag and discard it.

[0031] In the technical solution of the present invention, the device for accurately adjusting the compression degree of the left and right hearts during extracorporeal circulation includes a first connector, a sterile saline bag, a first pipeline, a first flow stop, a second connector and a second pipeline; the first connector is suitable for being installed on the liquid inlet pipeline of the roller pump; the liquid outlet end of the sterile saline bag is connected to the first connector through the first pipeline; the first flow stop is suitable for being arranged on the liquid inlet pipeline of the roller pump and clamping the blood inlet end of the first connector; the second connector is suitable for being installed on the liquid outlet pipeline of the roller pump, and the second connector is detachably connected to the plenum through the second pipeline; the second flow stop is suitable for being arranged on the liquid outlet pipeline of the roller pump and clamping the bleeding end of the second connector. It can be understood that when adjusting the compression of the roller pump, the first connector and the second connector can be installed on the inlet and outlet pipes of the roller pump respectively; then the sterile saline bag is connected to the first connector through the first pipe; then the first end of the second pipe is connected to the second connector, and the second end of the second pipe is connected to the membrane lung; then the first stopper and the second stopper are clamped on the inlet and outlet pipes of the roller pump respectively to prevent the blood flowing out of the vein from flowing into the roller pump through the first connector; then the roller pump is rotated until the saline in the sterile saline bag flows into the second pipe and fills it; the second end of the second pipe is removed from the membrane lung; then the entire second pipe is erected; finally, the compression of the roller pump is adjusted until the liquid level height of the second pipe remains unchanged, and the compression adjustment is completed. It can be seen that the present invention standardizes the pressure regulation method of the roller pump by adopting the above scheme, and greatly improves the accuracy and convenience of adjusting the compression of the left and right hearts of the extracorporeal circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0033] Figure 1 This is a schematic structural diagram of an embodiment of a device for accurately adjusting the compression of the left and right hearts during extracorporeal circulation according to the present invention;

[0034] Figure 2 The present invention is a flow chart of a compression adjustment method of an embodiment of a device for accurately adjusting the compression of the left and right hearts during extracorporeal circulation.

[0035] Description of Figure Numbers:

[0036] 100. Roller pump; 200. Membrane lung; 10. First connector; 20. Sterile saline bag; 30. First pipeline; 40. First flow stop; 50. Second connector; 60. Second flow stop; 70. Second pipeline.

[0037] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The present invention provides a device for accurately adjusting the compression degree of the left and right hearts during extracorporeal circulation.

[0043] Reference Figure 1 In one embodiment of the present invention, the device for accurately adjusting the compression degree of the left and right hearts during extracorporeal circulation includes a first connector 10, a sterile saline bag 20, a first pipe 30, a first flow stopper 40, a second connector 50 and a second pipe 70; the first connector 10 is suitable for installation on the liquid inlet pipe of the roller pump 100; the liquid outlet end of the sterile saline bag 20 is connected to the first connector 10 through the first pipe 30; the first flow stopper 40 is suitable for installation on the liquid inlet pipe of the roller pump 100 and clamps the blood inlet end of the first connector 10; the second connector 50 is suitable for installation on the liquid outlet pipe of the roller pump 100, and the second connector 50 is detachably connected to the pulmonary membrane through the second pipe 70; the second flow stopper 60 is suitable for installation on the liquid outlet pipe of the roller pump 100 and clamps the bleeding end of the second connector 50.

[0044] In this embodiment, the first connector 10 and the second connector 50 can both be 1 / 4 connectors and medical connectors with side holes, which is not limited here.

[0045] Preferably, the first flow stopper 40 and the second flow stopper 60 can be pipe clamps, or other flow-stopping devices or structures capable of preventing the flow of fluid in the pipeline, which is not limited here.

[0046] The first pipe 30 can be a pipe structure with a puncture needle at one end that can cooperate with the sterile saline bag 20, and the second pipe 70 can be a double-male infusion tube to facilitate the connection between the second connector 50 and the connector on the membrane lung 200, which is not limited here.

[0047] It can be understood that when adjusting the compression of the roller pump 100, the first connector 10 and the second connector 50 can be installed on the liquid inlet and outlet pipes of the roller pump 100 respectively; then the sterile saline bag 20 is connected to the first connector 10 through the first pipe 30; then the first end of the second pipe 70 is connected to the second connector 50, and the second end of the second pipe 70 is connected to the membrane lung 200; then the first flow stop 40 and the second flow stop 60 are clamped on the liquid inlet and outlet pipes of the roller pump 100 respectively to prevent blood and / or air in the pipes from flowing into the roller pump 100 through the first connector 10; then the roller pump 100 is rotated until the saline in the sterile saline bag 20 flows into the second pipe 70 and fills it; the second end of the second pipe 70 is removed from the membrane lung 200; then the entire second pipe 70 is erected; finally, the compression of the roller pump 100 is adjusted until the liquid level height of the second pipe 70 remains unchanged, and the compression adjustment is completed. It can be seen that the present invention standardizes the pressure regulation method of the roller pump 100 by adopting the above solution, and greatly improves the accuracy and convenience of adjusting the left and right heart pressure tightness during extracorporeal circulation.

[0048] In order to allow the liquid to flow in the pressure regulating pipeline by gravity, refer to Figure 1In one embodiment, the sterile saline bag 20 and the first conduit 30 connected thereto are arranged perpendicular to the horizontal plane. Similarly, the second conduit 70 may be arranged at least partially perpendicular to the horizontal plane.

[0049] Reference Figure 1 In one embodiment, the sterile saline bag 20 may be provided with a scale line for observing the current liquid level height, so that medical staff can timely understand the remaining amount of saline during the pressure adjustment process to avoid excessive liquid outflow.

[0050] In one embodiment, the device may further include a controller, which is electrically connected to the motor of the roller pump 100 and is used to control the operation of the roller pump 100 .

[0051] In this embodiment, the device further includes a pressure sensor electrically connected to the controller, and the pressure sensor is disposed on the liquid inlet pipe of the roller pump 100. This can help improve the therapeutic effect of extracorporeal circulation and the accuracy of the roller pump 100's pressure adjustment.

[0052] The present invention also proposes a compression adjustment method, based on the above-mentioned device for accurately adjusting the compression of the left and right hearts of the extracorporeal circulation, combined with Figure 1 and Figure 2 In one embodiment, the compression adjustment method includes the following steps:

[0053] S10, installing a first connector 10 and a second connector 50 on the liquid inlet pipe and the liquid outlet pipe of the roller pump 100 respectively;

[0054] S20, connecting the sterile saline bag 20 to the first connector 10 through the first pipe 30;

[0055] S30, connecting the first end of the second pipe 70 to the second connector 50, and connecting the second end of the second pipe 70 to the membrane lung 200;

[0056] S40, clamping the first flow stopper 40 and the second flow stopper 60 on the liquid inlet pipe and the liquid outlet pipe of the roller pump 100 respectively to prevent the blood flowing out of the vein from flowing into the roller pump 100 through the first connector 10;

[0057] S50, rotating the roller pump 100 until the saline in the sterile saline bag 20 flows into the second pipe 70 and fills it;

[0058] S60, removing the second end of the second pipe 70 from the membrane lung 200;

[0059] S70, erecting the entire second pipe 70;

[0060] S80: Adjust the compression of the roller pump 100 until the liquid level in the second pipe 70 remains unchanged.

[0061] In the present invention, when the compression of the roller pump 100 needs to be adjusted, the first connector 10 and the second connector 50 can be installed on the liquid inlet and liquid outlet pipes of the roller pump 100 respectively; the sterile saline bag 20 is then connected to the first connector 10 through the first pipe 30; the first end of the second pipe 70 is then connected to the second connector 50, and the second end of the second pipe 70 is connected to the membrane lung 200; the first flow stopper 40 and the second flow stopper 60 are then clamped on the liquid inlet and liquid outlet pipes of the roller pump 100 respectively to prevent the blood flowing out of the vein from flowing into the roller pump 100 through the first connector 10; the roller pump 100 is then rotated until the saline in the sterile saline bag 20 flows into the second pipe 70 and fills it; the second end of the second pipe 70 is removed from the membrane lung 200; and the entire second pipe 70 is then erected; and finally, the compression of the roller pump 100 is adjusted until the liquid level in the second pipe 70 remains unchanged, and the compression adjustment is completed. It can be seen that the present invention standardizes the pressure regulation method of the roller pump 100 by adopting the above solution, and greatly improves the accuracy and convenience of adjusting the left and right heart pressure tightness during extracorporeal circulation.

[0062] Furthermore, in one embodiment, after the step S80 of adjusting the compression of the roller pump 100 until the liquid level of the second pipe 70 remains unchanged, the following steps may be further included:

[0063] S90, reversing the roller pump 100 to allow the saline in the liquid inlet and outlet pipes of the roller pump 100, the first pipe 30, and the second pipe 70 to flow back into the sterile saline bag 20;

[0064] S100, remove the sterile saline bag 20 and discard it.

[0065] During operation, a connector is first installed at the left and right heart pump inlets, connected to a sterile saline bag 20, and another connector is installed at the pump outlet. This connector is connected to the membrane lung 200 with a double-male infusion tube. Then, a pipe clamp is used to clamp the distal end of the saline installation point and the distal end of the double-male infusion tube at the pump outlet. Then, the roller pump 100 is gently rotated until the double-male infusion tube is filled with liquid. The double-male infusion tube is then removed from the membrane lung 200 and stretched (erected) to a certain height. At this time, the compression of the left and right hearts can be accurately adjusted (rotating the adjustment knob of the roller pump 100) until the liquid level height does not change, that is, the pressure adjustment is completed. As can be seen from this, by adopting the above-mentioned pressure adjustment method, the accuracy of the compression of the left and right hearts during extracorporeal circulation is greatly improved.

[0066] In addition, after the adjustment is completed, the left and right hearts can be turned upside down to recover the saline in the left and right heart tubes into the sterile saline bag 20, and finally the sterile saline bag 20 can be discarded to prevent cross infection caused by reuse.

[0067] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present description and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A device for accurately adjusting the compression of the left and right hearts during extracorporeal circulation, characterized in that: The device comprises: The first connector is suitable for installation on the liquid inlet pipeline of the roller pump; a sterile saline bag, the liquid outlet of which is connected to the first connector via a first pipe; a first flow stopper, adapted to be disposed on the liquid inlet pipeline of the roller pump and to clamp the blood inlet end of the first connector; a second connector adapted to be mounted on the liquid outlet pipeline of the roller pump, the second connector being detachably connected to the pulmonary membrane via a second pipeline; and The second flow-stopping member is suitable for being arranged on the liquid outlet pipeline of the roller pump and clamping the bleeding end of the second connector.

2. The device for accurately adjusting the compression of the left and right heart during extracorporeal circulation according to claim 1, characterized in that: The sterile saline bag and the first pipeline connected thereto are arranged perpendicular to a horizontal plane.

3. The device for accurately adjusting the compression of the left and right heart during extracorporeal circulation according to claim 1, characterized in that: The second pipe is at least partially arranged perpendicular to the horizontal plane.

4. The device for accurately adjusting the compression of the left and right heart during extracorporeal circulation according to claim 1, characterized in that: The first flow stopper and the second flow stopper are both pipe clamps.

5. The device for accurately adjusting the compression of the left and right heart during extracorporeal circulation according to claim 1, characterized in that: The second pipeline is a double-male infusion tube.

6. The device for accurately adjusting the compression of the left and right heart during extracorporeal circulation according to claim 1, characterized in that: The sterile saline bag is provided with a scale line for observing the current liquid level height.

7. The device for accurately adjusting the compression of the left and right heart during extracorporeal circulation according to claim 1, characterized in that: The device further comprises a controller, which is electrically connected to the motor of the roller pump and is used to control the operation of the roller pump.

8. The device for accurately adjusting the compression of the left and right heart during extracorporeal circulation according to claim 7, characterized in that: The device further comprises a pressure sensor electrically connected to the controller, and the pressure sensor is arranged on the liquid inlet pipeline of the roller pump.

9. A method for adjusting compression, based on the device for accurately adjusting the compression of left and right hearts during extracorporeal circulation according to any one of claims 1 to 8, characterized in that: The compression adjustment method comprises the following steps: A first connector and a second connector are installed on the liquid inlet pipe and the liquid outlet pipe of the roller pump respectively; connecting a sterile saline bag to the first connector via a first pipe; Connecting the first end of the second conduit to the second connector, and connecting the second end of the second conduit to the membrane lung; Clamping the first flow stopper and the second flow stopper on the liquid inlet pipe and the liquid outlet pipe of the roller pump respectively; rotating the roller pump until the saline in the sterile saline bag flows into the second pipe and fills it; detaching the second end of the second tube from the membrane lung; erecting the entire second pipeline; The compression of the roller pump is adjusted until the liquid level in the second pipeline remains unchanged.

10. The method for adjusting the compression according to claim 9, wherein: After the step of adjusting the compression of the roller pump until the liquid level in the second pipeline remains unchanged, the method further includes: Reversing the roller pump to allow the saline in the inlet and outlet pipes of the roller pump, the first pipe, and the second pipe to flow back into the sterile saline bag; Remove the sterile saline bag and discard it.

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