A coronary artery perfusion device and a cardiopulmonary bypass device

Abstract

This utility model relates to the field of medical device technology and discloses a coronary artery perfusion device and an extracorporeal circulation device, comprising: a perfusion base tube with a connecting portion at one end; a perfusion head assembly including at least two perfusion heads, each perfusion head including a connecting mating portion and a perfusion portion; the connecting mating portion of each perfusion head is adapted to be detachably and limitingly connected to the connecting portion; the perfusion portion of each perfusion head has at least two different sizes; the perfusion base tube has: a working state in which it is limitedly connected to the connecting mating portion of one of the perfusion heads in the perfusion head assembly, and a standby state away from the perfusion head assembly. With this configuration, medical personnel do not need to replace the perfusion base tube during surgery; they can achieve corresponding matching with the coronary artery opening simply by replacing the perfusion head. Replacing a single perfusion head is less costly than replacing the entire perfusion base tube and perfusion head, and facilitates the use of multiple spare parts by medical personnel.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a coronary artery perfusion device and an extracorporeal circulation device. Background Technology

[0002] Today, cardiac surgery is becoming increasingly complex, and the procedures and instruments required for cardiopulmonary bypass (CPR) are becoming more precise. Effective protection of the myocardium is crucial during CPR, and one method of this is by perfusing the coronary arteries with a cardioplegic solution. This is especially important during aortic valve surgery, where it is often necessary to perfuse the left and right coronary arteries with cardioplegic solution separately.

[0003] Currently, the main devices for infusing cardioplegic solution are infusion tubing with an infusion head. The size and model of the infusion head must match the coronary artery orifice; otherwise, leakage or excessive infusion resistance may occur. However, in practice, because the infusion head and infusion tubing are designed as a single unit, the entire infusion tubing with the infusion head needs to be replaced to match different coronary artery orifices. This not only results in high replacement costs but also easily leads to a shortage of spare parts for less commonly used models due to cost issues. Utility Model Content

[0004] In view of this, the present invention provides a coronary artery perfusion device and an extracorporeal circulation device to solve the problem of high replacement cost of coronary artery perfusion tubing in the prior art.

[0005] In a first aspect, this utility model provides a coronary artery perfusion device, comprising: a perfusion base tube with a connecting portion at one end; a perfusion head assembly including at least two perfusion heads, each of the perfusion heads including a connecting mating portion and a perfusion portion; the connecting mating portion of each of the perfusion heads being adapted to be detachably and limitingly connected to the connecting portion; the perfusion portion of each of the perfusion heads having at least two different sizes; the perfusion base tube having: a working state in which it is limitedly connected to the connecting mating portion of one of the perfusion heads in the perfusion head assembly, and a standby state away from the perfusion head assembly.

[0006] Beneficial effects:

[0007] When the perfusion base tube is in working condition, an perfusion head with a perfusion portion matching the size of the corresponding coronary artery opening is selected from the perfusion head assembly. The perfusion head is then connected to the connecting portion of the perfusion base tube via a connecting mating part. When the perfusion base tube is in standby condition, the connecting mating part and the connecting portion are disassembled to separate the perfusion base tube and the perfusion head, so that the perfusion base tube is away from the perfusion head assembly. With this setup, medical staff do not need to replace the perfusion base tube during surgery. They can achieve matching with the coronary artery opening simply by replacing the perfusion head. Replacing a single perfusion head is less costly than replacing the entire perfusion base tube and perfusion head, and it is convenient for medical staff to have multiple types of spare parts.

[0008] In one alternative embodiment, the various connecting mating parts are homogeneous and of equal size; and / or, the sizes of the infusion portions on each of the infusion heads are different.

[0009] Beneficial effects:

[0010] When the shape and size of the connecting parts on different infusion heads are the same, the shape of the corresponding connecting parts on the infusion base tube can be simplified, requiring only a single structure to be matched, eliminating the need for redundant multi-form mating structures and reducing the design difficulty of the connecting parts. At the same time, setting different sizes of the infusion parts on different infusion heads can effectively expand the range of infusion head models required for different coronary artery openings, increasing the options available to medical staff. In addition, it can also avoid the mistaken reuse or replacement of infusion heads with the same size infusion parts due to difficulty in distinguishing them.

[0011] In one optional embodiment, the infusion part includes: a head body having an infusion hole thereon, the head body being fixedly connected to the connecting fitting part, the infusion hole being connected to the infusion base tube through the connecting fitting part; and a limiting ring correspondingly disposed on the outer side of the head body and protruding along the circumference of the head body.

[0012] Beneficial effects:

[0013] The setting of the limiting ring can prevent the part of the limiting ring facing away from the coronary artery opening from extending into the opening, thus playing a limiting and blocking role and preventing the perfusion base tube from damaging the coronary artery.

[0014] In one optional embodiment, the injection base pipe includes: a first straight pipe section; a second straight pipe section, and a bend pipe section is provided between the first pipe section and the second straight pipe section, wherein the included angle between the first straight pipe section and the second straight pipe section is A, and 45°≤A≤180°.

[0015] In one alternative implementation, A is 90° or 135°.

[0016] Beneficial effects:

[0017] When A is 90° or 135°, the bending shape of the perfusion base tube is a common instrument bending angle for medical staff during surgery, as well as a common operating angle for surgery applicable to extracorporeal circulation technology. This setting improves the familiarity of medical staff when using it, reduces the risk of errors, and expands the applicability of the device.

[0018] In one alternative embodiment, the connecting portion and the connecting mating portion are threaded or detachably snap-fitted together.

[0019] In one alternative embodiment, the connecting portion and the connecting mating portion are combined into a Luer connector.

[0020] Beneficial effects:

[0021] Both the connecting part and the connecting mating part are Luer joints, and their medical applications comply with national medical device standards, further improving the versatility of their structures.

[0022] Secondly, this utility model also provides an extracorporeal circulation device, including the aforementioned coronary artery perfusion device. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is an exploded view of the coronary artery perfusion device according to an embodiment of the present invention at an angle of 90°.

[0025] Figure 2 This is an exploded view of the coronary artery perfusion device according to another embodiment of the present invention at an angle of 135°.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Injection base pipe; 11. Connecting part; 12. First straight pipe section; 13. Bend section; 14. Second straight pipe section; 2. Injection head; 21. Connecting part; 22. Injection part; 221. Head body; 222. Limiting ring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] The following is combined Figures 1 to 2 The following describes embodiments of the present invention.

[0030] In a first aspect, this embodiment provides a coronary artery perfusion device, including: a perfusion base tube 1 and a perfusion head assembly.

[0031] In this embodiment, the infusion base tube 1 is a single tube with openings at both ends. One end is provided with a connecting part 11, and the other end can be connected to other components of the extracorporeal circulation device. Understandably, the infusion base tube 1 may also have branch tubes.

[0032] The infusion head assembly includes two or more infusion heads 2. The infusion heads 2 are also hollow. Each infusion head 2 includes a connecting part 21 and an infusion part 22. The connecting part 21 is used to connect with the connecting part 11, and the infusion part 22 is used to drain the fluid required for the operation in the infusion base tube 1, such as anti-skid fluid.

[0033] In this embodiment, the connecting parts 21 of each infusion head 2 are all adapted to be detachably and limitedly connected to the connecting part 11, which facilitates the user to replace different infusion heads 2 with different infusion heads 2 for the infusion base tube 1. The infusion parts 22 on each infusion head 2 have at least two different sizes. Providing two or more sizes of infusion parts 22 makes it convenient for the user to select an infusion head 2 with a corresponding size of infusion part 22 according to different sizes of coronary artery openings.

[0034] The injection base tube 1 has a working state and a standby state. In the working state, the injection base tube 1 is in a limiting connection with the connection and mating part 21 of one of the injection heads 2 included in the injection head assembly. In the standby state, the injection base tube 1 is away from the injection head assembly.

[0035] When the perfusion base tube 1 is in working condition, an perfusion head 2 with a perfusion portion 22 matching the size of the corresponding coronary artery opening is selected from the perfusion head group. The perfusion head 2 is connected to the connecting portion 11 of the perfusion base tube 1 through the connecting mating portion 21 on the perfusion head 2. When the perfusion base tube 1 is in standby condition, the connecting mating portion 21 and the connecting portion 11 are disassembled to separate the perfusion base tube 1 and the perfusion head 2, so that the perfusion base tube 1 is away from the perfusion head group. With this setting, medical staff do not need to replace the perfusion base tube 1 during the operation. They can achieve matching with the coronary artery opening by replacing the perfusion head 2. The replacement of the single perfusion head 2 is less costly than the overall replacement of the perfusion base tube 1 and the perfusion head 2, and it is convenient for medical staff to have multiple spare parts.

[0036] In this embodiment, preferably, each connecting and mating part 21 is the same shape and the same size, while the size of the injection part 22 on each injection head 2 is different.

[0037] When the shape and size of the connecting parts 21 on different infusion heads 2 are the same, the shape of the corresponding connecting parts 11 on the infusion base tube 1 can be simplified, and only a single structure needs to be matched. There is no need to add redundant multi-form matching structures, which reduces the design difficulty of the connecting parts 11. At the same time, the size of the infusion parts 22 on different infusion heads 2 are different, which can effectively expand the range of infusion head 2 models required for different coronary artery openings, improve the selection range for medical staff, and also avoid the incorrect reuse or replacement of infusion heads 2 with the same size infusion parts 22 due to difficulty in distinguishing them.

[0038] As a possible implementation, either of the following two options can be used: "each connecting and mating part 21 is the same shape and the same size" or "the size of the injection part 22 on each injection head 2 is different".

[0039] As a variable implementation, when a single connecting part 11 on the injection base pipe 1 can be used for two or more types of connecting mating parts 21, the connecting mating parts 21 can be set to be non-isomorphic or non-equal in size. For example, the connecting part 11 has two sleeved ring cylinders that both have internal threads, and the connecting mating part 21 is a cylinder with external threads and a ring cylinder with external threads.

[0040] As a variable implementation, when the number of injection heads 2 is three or more, there may be two or more injection heads 2 with the same size injection portion 22, provided that a distinguishing mark is set.

[0041] In this embodiment, the injection section 22 includes a head 221 and a limiting ring 222.

[0042] The head body 221 has an arc or rounded end and an infusion hole on its side wall. The head body 221 is fixedly connected to the connecting fitting part 21, preferably integrally formed. The infusion hole communicates with the infusion base tube 1 through the connecting fitting part 21. A limiting ring 222 is correspondingly disposed on the outside of the head body 221 and protrudes circumferentially along the head body 221. The limiting ring 222 prevents the part of the limiting ring 222 facing away from the coronary artery opening from extending into the opening, thus limiting and blocking the infusion base tube 1 from damaging the coronary artery.

[0043] As an alternative implementation, when the procedure requires the perfusion section 22 to extend entirely into the coronary artery ostium, the limiting ring 222 may not be provided.

[0044] The injection base pipe 1 has a fixed shape and is a rigid or resilient elastic structure, including: a first straight pipe section 12, a bend section 13, and a second straight pipe section 14. The bend section 13 is located between the first straight pipe section 12 and the second straight pipe section 14, and its inner and outer edges are rounded. The included angle between the first straight pipe section 12 and the second straight pipe section 14 is A, where 45°≤A≤180°. Specifically, it can be 45°, 60°, 75°, 90°, 120°, 150°, 180°, etc. Preferably, A is 90° or 135°.

[0045] When A is 90° or 135°, the bending shape of the perfusion base tube 1 is a common instrument bending angle for medical staff during surgery, as well as a common operating angle for surgery applicable to extracorporeal circulation technology. This setting improves the familiarity of medical staff when using it, reduces the risk of error, and expands the applicability of the device.

[0046] As an alternative implementation, the straight and curved sections of the injection base pipe 1 can be combined or arranged individually as needed. As another alternative implementation, the injection base pipe 1 can be configured as a flexible pipe.

[0047] Preferably, the connecting part 11 and the connecting mating part 21 are threadedly connected, or they can be detachably engaged by means of a slot or locking block. Specifically, the connecting part 11 and the connecting mating part 21 are combined into a Luer connector. In this embodiment, the connecting part 11 is provided with an internal thread, and the connecting mating part 21 is provided with an external thread that mates with it. As an alternative implementation, the connecting part 11 is provided with an external thread, and the connecting mating part 21 is provided with an internal thread that mates with it.

[0048] Both the connecting part 11 and the connecting mating part 21 are Luer connectors, and their medical applications comply with national medical device standards, further improving the versatility of their structures.

[0049] Secondly, this utility model also provides an extracorporeal circulation device, including the aforementioned coronary artery perfusion device.

[0050] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A coronary perfusion device, characterized by, include: The injection base pipe (1) has a connecting part (11) at one end; The infusion head assembly includes at least two infusion heads (2), each of the infusion heads (2) including a connecting part (21) and an infusion part (22); The connecting parts (21) of each of the infusion heads (2) are all adapted to be detachably and limitingly connected to the connecting parts (11); The injection portion (22) on each of the injection heads (2) has at least two different sizes; The infusion base tube (1) has a working state in which it is limitedly connected to the connection mating part (21) of one of the infusion heads (2) of the infusion head group, and a standby state in which it is far away from the infusion head group.

2. The coronary artery perfusion device according to claim 1, characterized in that, Each of the aforementioned connecting and mating parts (21) is identical in shape and equal in size; and / or, The size of the injection section (22) on each injection head (2) is different.

3. The coronary perfusion device of claim 1 or 2, wherein, The infusion section (22) includes: The head body (221) is provided with an injection hole. The head body (221) is fixedly connected to the connecting fitting part (21). The injection hole is connected to the injection base tube (1) through the connecting fitting part (21). A limiting ring (222) is correspondingly disposed on the outside of the head body (221) and protrudes along the circumference of the head body (221). The injection hole is disposed on the side of the limiting ring (222) away from the injection base tube (1).

4. The coronary perfusion device of claim 3, wherein, The infusion base tube (1) includes: First straight pipe section (12); The second straight pipe section (14) is connected to the first straight pipe section (12) by a bend section (13), and the angle between the first straight pipe section (12) and the second straight pipe section (14) is A, 45°≤A≤180°.

5. The coronary perfusion device of claim 4, wherein, A is 90° or 135°.

6. The coronary perfusion device of any of claims 1-2, 4-5, wherein, The connecting part (11) and the connecting mating part (21) are threaded or detachably snap-fitted together.

7. The coronary perfusion device of claim 6, wherein, The connecting part (11) and the connecting mating part (21) are combined into a Luer joint.

8. An extracorporeal circulation device, characterized by, include: The coronary artery perfusion device according to any one of claims 1-7.

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