A method for regulating the compression degree of left and right hearts during extracorporeal circulation

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By connecting the suction pump on the external circulation device and clamping the connecting tube with a pipe clamp, and measuring the loudness with the volume measuring device, the precise adjustment of the left and right heart compression of the external circulation device is achieved, and the problems of low adjustment accuracy and low efficiency in the prior art are solved.

CN119756564APending Publication Date: 2025-04-04BEIJING ANZHEN HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV

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Patent Information

Application Number: CN202411930916.7
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Filing Date: 2024-12-25
Publication Date: 2025-04-04

AI Technical Summary

Technical Problem

In the prior art, the adjustment of left and right cardiac compression of the extracorporeal circulation device has problems of low accuracy and low adjustment efficiency, and the degree of adjustment depends on personal experience.

Method used

By connecting the suction pump to the left and right center connecting pipes of the external circulation device, and installing joints at the inlet and outlet of the suction pump, using pipe jaws to clamp the connection pipe, the volume measuring device measures the loudness of the pipe jaws when clamping, and achieving accurate adjustment of the tightness of the left and right centers.

Benefits of technology

This method makes the adjustment of left and right heart compression of the extracorporeal circulation device simpler and more convenient, with more controllable and reliable accuracy, and does not require personal experience, and is suitable for novice and experienced operators.

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Abstract

The present invention discloses a method for adjusting the compression degree of the left and right hearts of an extracorporeal circulation device, comprising the following steps: S1: connecting a suction pump to the left and right heart connecting tubes of an extracorporeal circulation device, installing a first joint at the pump inlet of the suction pump, and installing a second joint at the pump outlet of the suction pump; S2: using a first connecting tube to connect a sterile saline bag on the first joint, and using a second connecting tube to connect a membrane lung on the second joint; S3: using a pipe clamp to clamp the first connecting tube and the second connecting tube; S4: measuring the spring sound generated when the pipe clamp clamps the tube body, and the spring sound when the pipe clamp is compressed is 45 decibels-85 decibels, indicating that the compression degree is accurate. Compared with the existing adjustment method, it is simpler and more convenient, and the precision adjustment is more controllable and reliable, which can effectively ensure that the adjustment compression degree is within the precise range, and the adjustment of the compression degree of the left and right hearts can be achieved without relying on personal experience. Both novice operators and experienced operators can quickly master the adjustment operation of the compression degree of the left and right hearts.

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Description

Technical Field

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

[0002] Extracorporeal circulation surgery in China has become increasingly mature, and many large cardiac diagnosis and treatment centers have their own routine medical diagnosis and treatment operations. However, some operational details are difficult to quantify and standardize. For example, for the adjustment of the compression degree of the left and right hearts in the extracorporeal circulation device, almost every perfusionist has his or her own operating experience and adjustment standards.

[0003] Since the suction of the left and right hearts is an important factor affecting the incidence of hemoglobinuria, the adjustment of the compression degree of the left and right hearts is of vital importance. In current practice, the inlets of the left and right hearts are generally clamped, and then the rolling pump is turned to listen to the sound to adjust the compression degree of the left and right hearts of the extracorporeal circulation device. However, this can only achieve the effect of coarse adjustment, because there is no liquid in the left and right hearts of the extracorporeal circulation device before the transfer, and thus fine adjustment is impossible. Therefore, the accuracy of adjusting the compression degree of the left and right hearts of the extracorporeal circulation device is extremely low, and the degree of adjustment depends on the personal experience of the perfusionist. The adjustment efficiency is low, which is very inconvenient and extremely unfriendly to novice perfusionists.

[0004] The existing adjustment method is to install a joint at the left and right heart pump inlet, connect a soft bag of sterile saline to the outside, install a joint at the pump outlet, connect the double male tube to the membrane lung, clamp the distal end of the saline installation and the distal end of the double male tube at the pump outlet, and then gently turn the roller pump until the liquid fills the double male tube, then remove the double male tube from the membrane lung and stretch it to a certain height, then the compression of the left and right hearts can be accurately adjusted. This method can be considered a "gold standard" for adjusting the compression of the left and right hearts, but the above method is more troublesome and the adjustment efficiency is low. Summary of the invention

[0005] Therefore, the present invention aims to solve the problem of low adjustment accuracy and low adjustment efficiency in adjusting the compression degree of the left and right hearts of the extracorporeal circulation device in the prior art, thereby providing a method for adjusting the compression degree of the left and right hearts of the extracorporeal circulation.

[0006] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0007] A method for adjusting the compression degree of left and right hearts during extracorporeal circulation, comprising the following steps:

[0008] S1: Perform an in vitro experiment, connect a suction pump to the left and right heart connecting tubes of the extracorporeal circulation device, install a first connector at the pump inlet of the suction pump, and install a second connector at the pump outlet of the suction pump;

[0009] S2: Connect the sterile saline bag using a first connecting tube on the first connector, and connect the membrane lung using a second connecting tube on the second connector;

[0010] S3: clamping the first connecting pipe and the second connecting pipe in step S2 with a pipe clamp;

[0011] S4: A volume measuring device is provided. When the pipe clamp is clamped on the second connecting pipe in step S3, the volume measuring device is used to measure the spring loudness generated when the pipe clamp clamps the second connecting pipe. When the compression of the left and right centers is precisely adjusted, the spring loudness of the pipe clamp when compressed is between 45 decibels and 85 decibels.

[0012] Furthermore, in the step S3, the pipe clamp comprises a left clamp and a right clamp which are hinged to each other, and fastening teeth are provided on the sides of the hand-held ends of the left clamp and the right clamp which are close to each other. When the pipe clamp is clamped, the two fastening teeth will approach and collide with each other and make a snapping sound.

[0013] Furthermore, a plurality of clamping teeth arranged side by side are provided on one side of the clamping sections of the left clamp and the right clamp that are suitable for clamping the pipe body.

[0014] Furthermore, in the step S1, the suction pump is a single-head suction pump, and in the step S4, when the compression of the left and right centers is precisely adjusted, the spring noise level of the pipe clamp when compressed is between 48.6 decibels and 83.6 decibels.

[0015] Furthermore, in the step S1, the suction pump is a double-head suction pump, and in the step S4, when the compression of the left and right centers is precisely adjusted, the spring noise level of the pipe clamp when compressed is between 50.3 decibels and 72.5 decibels.

[0016] Furthermore, the second connecting tube is a double-male infusion tube.

[0017] Furthermore, the clamping teeth are hemispherical.

[0018] Furthermore, the size of the single-head suction pump is 6 inches.

[0019] Furthermore, the size of the double-head suction pump is 3 inches.

[0020] Furthermore, the method further comprises the following steps:

[0021] S5: After tightening the tube clamp, rotating the roller pump on the extracorporeal circulation device to allow the liquid in the sterile saline bag to fill the second connecting tube in step S4;

[0022] S6: After step S5, the rolling pump in step S5 is reversed to allow the liquid in the second connecting tube to flow back into the sterile saline bag.

[0023] The technical solution of the present invention has the following advantages:

[0024] 1. The method for adjusting the compression degree of the left and right hearts during extracorporeal circulation provided by the present invention is simpler and more convenient than the existing adjustment method, and the precision adjustment degree is more controllable and reliable, which can effectively ensure that the adjustment compression degree is within a precise range, and the compression degree of the left and right hearts can be adjusted without relying on personal experience. Both novice operators and experienced operators can quickly master the adjustment operation of the left and right heart compression degree.

[0025] 2. The method for adjusting the compression degree of the left and right heart of the extracorporeal circulation provided by the present invention has a hemispherical clamping tooth. With such a configuration, the tube body can be clamped between two adjacent hemispherical clamping teeth, ensuring that the tube body is squeezed while allowing the liquid in the tube body to pass through; clamping the tube body at the top of the hemispherical clamping tooth can also allow the liquid in the side of the tube body that is not clamped by the clamping tooth to continue to flow, without directly blocking the liquid flow after the tube body is clamped, thereby ensuring the adjustment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a structure for adjusting the compression degree of the left and right hearts of an extracorporeal circulation system using a tube clamp provided in an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the structure of the pipe clamp in this embodiment.

[0029] Explanation of the accompanying reference numerals: 1. Extracorporeal circulation device; 2. Left and right heart connecting tubes; 3. Tube clamp; 4. Fastening tooth; 5. Clamping tooth. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below 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. Based on the 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.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] like Figure 1-Figure 2 A method for adjusting the compression degree of left and right hearts in extracorporeal circulation is shown, comprising the following steps:

[0035] S1: Conduct an in vitro experiment, connect a suction pump to the left and right heart connecting tubes 2 of the extracorporeal circulation device 1, install a first connector at the pump inlet of the suction pump, and install a second connector at the pump outlet of the suction pump;

[0036] S2: Use the first connecting tube to connect the sterile saline bag on the first connector, and use the second connecting tube to connect the membrane lung on the second connector;

[0037] S3: clamping the first connecting pipe and the second connecting pipe in step S2 with a pipe clamp 3;

[0038] S4: A volume measuring device is provided. When the pipe clamp 3 is clamped on the second connecting pipe in step S3, the volume measuring device is used to measure the spring loudness generated when the pipe clamp 3 clamps the second connecting pipe. When the compression of the left and right centers is precisely adjusted, the spring loudness when the pipe clamp 3 is compressed is between 45 decibels and 85 decibels.

[0039] This method of adjusting the compression degree of the left and right hearts during extracorporeal circulation is simpler and more convenient than the existing adjustment methods, and the precision adjustment degree is more controllable and reliable. It can effectively ensure that the adjustment compression degree is within a precise range, and the compression degree of the left and right hearts can be adjusted without relying on personal experience. Both novice operators and experienced operators can quickly master the adjustment operation of the left and right heart compression degree.

[0040] In this embodiment, the following steps are also included:

[0041] S5: After tightening the tube clamp 3, rotating the roller pump on the extracorporeal circulation device 1, so that the liquid in the sterile saline bag fills the second connecting tube in step S4;

[0042] S6: After step S5, reverse the rolling pump in step S5 to allow the liquid in the second connecting tube to flow back into the sterile saline bag.

[0043] In this embodiment, the first connector and the second connector are both 1 / 4LL connectors. The second connecting tube is a double-male infusion tube.

[0044] In this embodiment, in step S1, the suction pump is a single-head suction pump, and in step S4, when the compression of the left and right centers is precisely adjusted, the spring sound of the pipe clamp 3 when compressed is between 48.6 dB and 83.6 dB, with an average of 62.5 dB. Specifically, the size of the single-head suction pump is 6 inches.

[0045] In an alternative embodiment, in step S1, the suction pump is a double-head suction pump, and in step S4, when the compression of the left and right centers is precisely adjusted, the spring sound of the pipe clamp 3 when compressed is 50.3 decibels to 72.5 decibels, with an average of 64.8 decibels. Specifically, the size of the double-head suction pump is 3 inches.

[0046] In this embodiment, in step S3, the pipe clamp 3 includes a left clamp and a right clamp that are hinged to each other, and fastening teeth 4 are provided on the sides of the hand-held ends of the left clamp and the right clamp that are close to each other. When the pipe clamp 3 is clamped, the two fastening teeth 4 will approach each other and collide with each other and make a snapping sound.

[0047] In this embodiment, a plurality of clamping teeth 5 arranged side by side are provided on the clamping sections of the left clamp and the right clamp on one side suitable for clamping the tube body. Specifically, the clamping teeth 5 are hemispherical. With such arrangement, the tube body can be clamped between two adjacent hemispherical clamping teeth 5, ensuring that the tube body is squeezed while allowing the liquid in the tube body to pass through; clamping the tube body at the top of the hemispherical clamping teeth 5 can also allow the liquid in the side of the tube body that is not clamped by the clamping teeth 5 to continue to flow, without directly blocking the liquid flow after the tube body is clamped, thereby ensuring the adjustment accuracy.

[0048] To sum up, this method of adjusting the compression degree of the left and right hearts during extracorporeal circulation is simpler and more convenient than the existing adjustment methods, and the precision adjustment degree is more controllable and reliable. It can effectively ensure that the adjustment compression degree is within the precise range, and the compression degree of the left and right hearts can be adjusted without relying on personal experience. Both novice operators and experienced operators can quickly master the adjustment operation of the left and right heart compression degree.

[0049] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for adjusting the compression of left and right hearts during extracorporeal circulation, characterized in that: The following steps are involved: S1: Conducting an in vitro experiment, connecting a suction pump to the left and right heart connecting tubes (2) of the extracorporeal circulation device (1), installing a first connector at the pump inlet of the suction pump, and installing a second connector at the pump outlet of the suction pump; S2: Connect the sterile saline bag using a first connecting tube on the first connector, and connect the membrane lung using a second connecting tube on the second connector; S3: using a pipe clamp (3) to clamp the first connecting pipe and the second connecting pipe in step S2; S4: a volume measuring device is provided. When the pipe clamp (3) is clamped on the second connecting pipe in step S3, the volume measuring device is used to measure the spring loudness generated when the pipe clamp (3) clamps the second connecting pipe. When the compression of the left and right centers is precisely adjusted, the spring loudness of the pipe clamp (3) when compressed is between 45 decibels and 85 decibels.

2. The method for adjusting the compression degree of left and right heart during extracorporeal circulation according to claim 1, characterized in that: In the step S3, the pipe clamp (3) comprises a left clamp and a right clamp which are hinged to each other, and fastening teeth (4) are provided on the sides of the hand-held ends of the left clamp and the right clamp which are close to each other. When the pipe clamp (3) is clamped, the two fastening teeth (4) will collide with each other and make a snapping sound.

3. The method for adjusting the compression degree of left and right heart during extracorporeal circulation according to claim 2, characterized in that: A plurality of clamping teeth (5) arranged side by side are provided on one side of the clamping sections of the left clamp and the right clamp that are suitable for clamping the pipe body.

4. The method for adjusting the compression degree of left and right heart during extracorporeal circulation according to claim 1, characterized in that: In the step S1, the suction pump is a single-head suction pump. In the step S4, when the compression of the left and right centers is precisely adjusted, the spring noise of the pipe clamp (3) when compressed is between 48.6 decibels and 83.6 decibels.

5. The method for adjusting the compression degree of left and right heart during extracorporeal circulation according to claim 1, characterized in that: In the step S1, the suction pump is a double-head suction pump. In the step S4, when the compression of the left and right centers is precisely adjusted, the spring noise of the pipe clamp (3) when compressed is between 50.3 decibels and 72.5 decibels.

6. The method for adjusting the compression degree of left and right heart during extracorporeal circulation according to claim 1, characterized in that: The second connecting tube is a double-male infusion tube.

7. The method for adjusting the compression degree of left and right heart during extracorporeal circulation according to claim 3, characterized in that: The clamping teeth (5) are hemispherical.

8. The method for adjusting the compression degree of left and right heart during extracorporeal circulation according to claim 4, characterized in that: The single-head suction pump has a size of 6 inches.

9. The method for adjusting the compression degree of left and right heart during extracorporeal circulation according to claim 5, characterized in that: The size of the double-head suction pump is 3 inches.

10. The method for adjusting the compression degree of left and right heart during extracorporeal circulation according to claim 1, characterized in that: The following steps are also included: S5: After tightening the tube clamp (3), rotating the roller pump on the extracorporeal circulation device (1) to allow the liquid in the sterile saline bag to fill the second connecting tube in step S4; S6: After step S5, the rolling pump in step S5 is reversed to allow the liquid in the second connecting tube to flow back into the sterile saline bag.