Connector and ventricular assist system

Abstract

The application relates to a connector and a blood pump, the connector comprising a first connecting seat and a second connecting seat, the first connecting seat being provided with a first end face, the second connecting seat comprising a main body part, an electric connection structure being arranged between the main body part and the first connecting seat to realize electric connection, the main body part being provided with a second end face, and a first shell comprising a first sleeve and an extension part connected with each other, the first sleeve being sleeved on the outer periphery of the main body part, the extension part being a soft rubber part and being arranged around the electric connection structure, the extension part comprising a first surface and a second surface arranged away from each other, the first surface being in abutment with the first end face, and the second surface being in abutment with the second end face. The above connector avoids the sealing failure problem caused by the displacement of a sealing ring during the connection of the first connecting seat and the second connecting seat, and improves the sealing effect between the first connecting seat and the second connecting seat.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a connector and a ventricular assist system. Background Technology

[0002] Cardiovascular disease has become a leading cause of death worldwide, and heart transplantation is an effective treatment for critically ill heart patients. However, in reality, there are far more heart recipients than heart donors, leading to patients dying while waiting for a heart transplant. Blood pumps assist the heart in pumping blood and are commonly used devices in the adjunctive treatment of cardiovascular diseases.

[0003] Once the blood pump is implanted in the human heart, it needs to be electrically connected to an external controller. Typically, the blood pump connects to one connector via a cable, and the external controller connects to another connector via a different cable. These two connectors are then connected together to establish the electrical connection between the blood pump and the controller. A sealing ring is usually placed between the two connectors to ensure a tight seal. However, when the two connectors are joined together, the sealing ring is prone to displacement due to sudden compression, resulting in a poor seal. Summary of the Invention

[0004] Therefore, it is necessary to provide a connector and ventricular assist system to address the issue of how to improve the sealing effect of the connector.

[0005] On one hand, this application provides a connector, including a first connector and a second connector, wherein the first connector has a first end face, and the second connector includes:

[0006] The main body portion, wherein an electrical connection structure is provided between the main body portion and the first connecting seat to achieve an electrical connection, the main body portion having a second end face; and,

[0007] The first housing includes a first sleeve and an extension connected to each other. The first sleeve is sleeved on the outer periphery of the main body. The extension is a soft rubber part and is arranged around the electrical connection structure. The extension includes a first surface and a second surface disposed opposite to each other. The first surface abuts against the first end face, and the second surface abuts against the second end face.

[0008] In one embodiment, one of the first end face and the extension is provided with a sealing groove, and the other is provided with a sealing protrusion. The sealing protrusion is sealed and inserted into the sealing groove. Both the sealing protrusion and the sealing groove are arranged around the electrical connection structure and are in a ring shape.

[0009] In one embodiment, the height of the sealing protrusion is greater than the depth of the sealing groove.

[0010] In one embodiment, the extension is provided with the sealing groove, and a thickened portion protrudes from the side of the extension away from the sealing groove. The position of the thickened portion corresponds to the position of the sealing groove in the axial direction of the first housing.

[0011] In one embodiment, the orthographic projection of the sealing groove on the side where the thickened portion is located is within the thickened portion.

[0012] In one embodiment, the inner and outer sides of the extension are flush with the inner and outer sides of the first end face.

[0013] In one embodiment, the first sleeve is a soft rubber part, and the first sleeve and the extension are integrally formed.

[0014] In one embodiment, the second end face is provided with a limiting protrusion, and the extension is provided with a first limiting groove, wherein the limiting protrusion and the first limiting groove are adapted to fit together.

[0015] In one embodiment, the thickened portion of the extension forms the first limiting groove between the thickened portion of the extension and the inner wall of the first sleeve.

[0016] In one embodiment, the inner peripheral wall of the first sleeve is stepped to form a first stepped surface, and the outer peripheral wall of the main body is stepped to form a second stepped surface. The second stepped surface is away from the second end face, and the first stepped surface and the second stepped surface abut against each other.

[0017] In one embodiment, the main body includes a second housing and an electrical connector disposed within the second housing. The second housing includes a second sleeve and a first boss. The first boss protrudes from the outer peripheral wall of the second sleeve and has a second end face and a second stepped surface.

[0018] The first housing is provided with a second limiting groove, the first boss is adapted to the second limiting groove, one of the groove walls of the second limiting groove forms the first stepped surface, and the groove wall of the second limiting groove opposite to the first stepped surface forms a surface of the extension.

[0019] In one embodiment, the hardness of the second housing is greater than that of the first housing.

[0020] On the other hand, this application also provides a ventricular assist system, comprising:

[0021] Blood pump;

[0022] Controller; and,

[0023] The connector as described above;

[0024] The first connector is electrically connected to one of the blood pump and the controller via a cable, and the second connector is electrically connected to the other of the blood pump and the controller via another cable.

[0025] In this embodiment, the connector configures the second connector to include a main body and a first housing covering the main body, with the extension of the first housing being a soft rubber component. When the first and second connectors are connected and fixed, the first end face of the first connector and the second end face of the second connector can jointly press against the extension of the first housing, allowing the extension to seal against both the first and second end faces, thus achieving a sealed connection between the first and second connectors and providing sealing protection for the electrical connection structure between the main body and the first connector. Compared to traditional solutions using a separate sealing ring, the connector in this application achieves a sealing effect through the extension of the first housing, eliminating the need for an additional sealing ring, reducing the number of components, and simplifying the assembly process. Furthermore, since the extension is connected and fixed to the first sleeve fitted outside the main body, and the position of the first sleeve is restricted by the main body, the extension is effectively limited by the first sleeve, resulting in better stability. During the connection process between the first and second connectors, the extension will not shift, ensuring a proper seal between them. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a ventricular assist system according to one embodiment.

[0027] Figure 2a for Figure 1 The diagram shows the structure of the connector.

[0028] Figure 2b for Figure 1 The front view of the connector shown.

[0029] Figure 3 for Figure 2b The connector shown is a cross-sectional view at section AA.

[0030] Figure 4a for Figure 3 The enlarged view of point B shown in the image.

[0031] Figure 4b for Figure 4a The first connecting seat shown is partially enlarged at the sealing protrusion.

[0032] Figure 5 for Figure 2b Another cross-sectional view of the connector shown.

[0033] Figure 6 for Figure 5 The enlarged view of point C shown in the image.

[0034] Figure 7 for Figure 6 The diagram shows a further enlarged view of the structure, although the main body is not shown.

[0035] Figure 8 for Figure 6 A further enlarged view of the second housing shown.

[0036] Figure 9 This is a schematic diagram of the structure of the second connector in one embodiment.

[0037] Figure 10 for Figure 9 The front view of the second connector shown.

[0038] Figure 11 for Figure 10 The second connecting seat shown is in a cross-sectional view at section DD.

[0039] Figure 12 This is a cross-sectional view of the second connector according to another embodiment.

[0040] Figure 13 This is a schematic diagram of the structure of the first connector in one embodiment.

[0041] Figure 14 for Figure 13 The front view of the first connector shown.

[0042] Figure 15 for Figure 14 The first connector shown is in a cross-sectional view of section EE.

[0043] Explanation of reference numerals in the attached figures:

[0044] 10. Second connecting seat; 11. Main body; 111. Limiting protrusion; 112. First boss; 113. Second sleeve; 114. Second end face; 115. Second stepped surface; 12. First housing; 121. Sealing groove; 122. Extension; 1221. First surface; 1222. Second surface; 123. Thickened part; 124. First limiting groove; 125. Second limiting groove; 126. First stepped part; 27. Second step; 128. Clearance hole; 129. First sleeve; 1291. First step surface; 13. Third housing; 14. Electrical connection structure; 15. Second housing; 20. First connecting seat; 21. Sealing protrusion; 211. Guide surface; 22. Outer shell; 23. Electrical component; 24. First end face; 30. Locking sleeve; 31. Limiting protrusion; 100. Connector; 200. Blood pump; 300. Controller. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] See Figure 1 This application provides a connector 100 for connecting a controller 300 and a blood pump 200 in a ventricular assist system, enabling the controller 300 and the blood pump 200 to be electrically connected via the connector 100, thereby achieving control and power supply to the blood pump 200. Understandably, in other embodiments, the connector 100 can also be used to connect two other detachable components.

[0052] Specifically, in combination Figures 2a to 4aThe connector 100 in this embodiment includes a first connector 20 and a second connector 10, with an electrical connection structure 14 between them to achieve electrical connection. The first connector 20 can be connected to the blood pump 200 via a cable, and the second connector 10 can be connected to the controller 300 via another cable. Understandably, in other embodiments, the first connector 20 can also be used to connect to the controller 300, and the second connector 10 can also be used to connect to the blood pump 200.

[0053] In this embodiment, the cross-sections of the first connecting seat 20 and the second connecting seat 10 can be generally circular.

[0054] Since the first connector 20 can be electrically connected to the second connector 10 through the electrical connection structure 14, the location of the electrical connection structure 14 needs to be sealed and protected to prevent liquids, solid particles and other substances from entering the electrical connection structure 14 from the connection position between the first connector 20 and the second connector 10, causing short circuits or other problems.

[0055] To address this, the second connecting seat 10 in this embodiment includes a main body 11 and a first housing 12. An electrical connection structure 14 is provided between the main body 11 and the first connecting seat 20 to achieve an electrical connection. The main body 11 has a second end face 114 (e.g., Figure 8 As shown), the first connecting seat 20 has a first end face 24 (as shown). Figure 4b As shown, the first end face 24 and the second end face 114 are arranged facing each other. The first housing 12 surrounds the outer periphery of the main body 11. Specifically, the first housing 12 includes a first sleeve 129 and an extension 122 connected to each other. The first sleeve 129 is fitted around the outer periphery of the main body 11, and the extension 122 is located on the second end face 114 and surrounds the electrical connection structure 14. The side of the extension 122 facing away from the second end face 114 is sealed and abuts against the first end face 24. The extension 122 is a soft rubber part, that is, the extension 122 is made of soft rubber material.

[0056] like Figure 12 As shown, specifically, the extension 122 includes a first surface 1221 and a second surface 1222 disposed opposite to each other. The first surface 1221 abuts against the first end face 24, and the second surface 1222 abuts against the second end face 114.

[0057] In this embodiment, the connector 100 configures the second connecting seat 10 to include a main body 11 and a first housing 12 covering the main body 11. The first housing 12 is made of soft rubber. When the first connecting seat 20 and the second connecting seat 10 are connected and fixed, the first end face 24 of the first connecting seat 20 and the second end face 114 of the second connecting seat 10 jointly press against the extension 122 of the first housing 12. This allows the extension 122 of the first housing 12 to seal against the first end face 24 and the second end face 114, thereby achieving a sealed connection between the first connecting seat 20 and the second connecting seat 10, and thus sealing and protecting the electrical connection structure 14 between the main body 11 and the first connecting seat 20. Compared to the traditional method using a sealing ring, the connector 100 of this application achieves a sealing effect through the extension 122 of the first housing 12, eliminating the need for an additional sealing ring, reducing the number of components, and simplifying the assembly process. Meanwhile, since the extension 122 is connected and fixed to the first sleeve 129 sleeved outside the main body 11, and the position of the first sleeve 129 is restricted by the main body 11, the extension 122 is effectively limited by the first sleeve 129, thus having good stability. When the first connecting seat 20 is connected to the second connecting seat 10, the extension 122 will not shift, thus ensuring the sealing effect between the first connecting seat 20 and the second connecting seat 10.

[0058] Optionally, see Figure 4a , Figure 4b , Figures 9 to 11 In one embodiment, one of the first end face 24 and the first surface 1221 of the extension 122 is provided with a sealing groove 121, and the other is provided with a sealing protrusion 21, which is sealed and inserted into the sealing groove 121. For example, in this embodiment, the first end face 24 is provided with a sealing protrusion 21, and the extension 122 is provided with a sealing groove 121. By using the method of sealing the protrusion 21 sealed and inserted into the sealing groove 121, the contact area between the first end face 24 and the extension 122 is increased, further improving the sealing effect between the first connecting seat 20 and the second connecting seat 10. At the same time, the cooperation between the sealing protrusion 21 and the sealing groove 121 can also achieve a better positioning effect, improving the connection stability and sealing performance of the first connecting seat 20 and the second connecting seat 10.

[0059] Of course, in other embodiments, the sealing protrusion 21 may also be provided on the extension 122, and correspondingly, the sealing groove 121 is provided on the first end face 24.

[0060] In this embodiment, both the sealing protrusion 21 and the sealing groove 121 are arranged in annular shape around the electrical connection structure 14. In this way, the annular sealing groove 121 and the annular sealing protrusion 21 cooperate to form a closed annular sealing structure between the first connecting seat 20 and the second connecting seat 10, further improving the sealing effect between the first connecting seat 20 and the second connecting seat 10.

[0061] Optionally, in one embodiment, there are multiple sealing grooves 121, which are arranged at intervals in the radial direction of the connector 100. Correspondingly, there are also multiple sealing protrusions 21, which are arranged at intervals and inserted into the sealing grooves 121 one-to-one, thereby forming a multiple seal between the first connector 20 and the second connector 10.

[0062] In some embodiments, the shape of the sealing protrusion 21 is adapted to the shape of the sealing groove 121, so that the sealing protrusion 21 and the sealing groove 121 can fit together without gaps, thereby achieving a better sealing effect and also achieving a better positioning effect.

[0063] In other embodiments, since the extension 122 itself is elastic, the shape of the sealing protrusion 21 may not be completely adapted to the shape of the sealing groove 121 in the initial state. After assembly, the sealing protrusion 21 can be deformed by pressing the extension 122 to adapt to the shape of the sealing groove 121.

[0064] Specifically, in one embodiment, the height H1 of the sealing protrusion 21 is greater than the depth H2 of the sealing groove 121. In this embodiment, the height H1 of the sealing protrusion 21 refers to the height of the sealing protrusion 21 protruding from the first end face 24, and the depth H2 of the sealing groove 121 refers to the depth of the sealing groove 121 recessed into the extension 122. Thus, when the first connecting seat 20 and the second connecting seat 10 are connected in place, the sealing protrusion 21 can be forced to press down on the bottom wall of the sealing groove 121, causing the bottom wall of the sealing groove 121 to deform and become recessed. This results in a greater force between the sealing protrusion 21 and the bottom wall of the sealing groove 121, and a better sealing effect.

[0065] Please refer to the reference again. Figure 11 In some embodiments, the sealing groove 121 has a flared structure. Specifically, the sealing groove 121 has a bottom wall and two side walls disposed opposite to each other on both sides of the bottom wall. The distance between the two side walls gradually increases along the opening direction of the sealing groove 121. That is, the side walls are inclined relative to the bottom wall, so that the opening of the sealing groove 121 forms a flared structure, which makes it easier for the sealing protrusion 21 to be inserted into the sealing groove 121. The side walls can be inclined straight walls or curved walls.

[0066] Please refer to the reference again. Figure 4b The sealing protrusion 21 has guide surfaces 211 on both opposite sides of its end for engaging with the sidewall of the groove. The distance between the two guide surfaces 211 gradually decreases along the direction from the first end face 24 to the second end face 114, making it easier for the sealing protrusion 21 to be inserted into the sealing groove 121. Similarly, the guide surface 211 can be an inclined flat surface or an arc-shaped surface.

[0067] Furthermore, please refer to the references. Figure 5 , Figure 6 and Figure 11 Because the extension 122 has a relatively small thickness and weak strength after the sealing groove 121 is formed, the bottom wall of the sealing groove 121 is subjected to a relatively large force when it comes into contact with the sealing protrusion 21, making the bottom wall of the sealing groove 121 easy to be punctured. Therefore, in order to avoid the bottom wall of the sealing groove 121 being punctured, in some embodiments, a thickened portion 123 is provided on the second surface 1222 of the extension 122 opposite to the sealing groove 121. The position of the thickened portion 123 corresponds to the position of the sealing groove 121 in the axial direction of the first housing 12, thereby increasing the thickness of the extension 122 at the location where the sealing groove 121 is formed, improving the structural strength, and avoiding the risk of the bottom wall of the sealing groove 121 being punctured and damaged due to excessive force.

[0068] The correspondence between the position of the thickened portion 123 and the position of the sealing groove 121 in the axial direction of the first housing 12 means that the orthographic projection of the sealing groove 121 on the side where the thickened portion 123 is located is at least partially located within the thickened portion 123. Optionally, the orthographic projection of the sealing groove 121 on the side where the thickened portion 123 is located is entirely located within the thickened portion 123. This allows the thickened portion 123 to increase the thickness of the entire area where the sealing groove 121 is located, thus preventing thin-walled fractures due to the sealing groove 121.

[0069] In this embodiment, the thickened portion 123 is also arranged in a ring around the electrical connection structure 14. Along the radial direction of the first housing 12, the width of the sealing groove 121 is less than or equal to the width of the thickened portion 123.

[0070] See Figure 11 In some embodiments, the width L1 of the thickened portion 123 in the radial direction of the connector 100 is greater than the width L2 of the sealing groove 121. The thickened portion 123 abuts against the second end face 114 of the main body portion 11. The wider thickened portion 123 has a larger contact area with the second end face 114 of the main body portion 11, which is equivalent to increasing the connection stability and sealing between the extension portion 122 and the main body portion 11, while also providing better support for the first connecting seat 20.

[0071] In this embodiment, the extension 122 is disposed around the electrical connection structure 14, which is equivalent to the extension 122 forming a clearance hole 128 through which the power connection structure 14 passes. The thickened portion 123 can form part of the hole wall of the clearance hole 128, that is, the thickened portion 123 extends to the edge of the clearance hole 128 in the radial direction of the first housing 12.

[0072] See Figure 12 In other embodiments, the width L1 of the thickened portion 123 in the radial direction of the connector 100 is substantially equal to the width L2 of the sealing groove 121, and the thickened portion 123 and the sealing groove 121 are aligned in the axial direction of the first housing 12. In this way, while avoiding the bottom wall of the sealing groove 121 from being punctured due to excessive force, the smaller thickened portion 123 can undergo greater elastic deformation, forcing the sealing protrusion 21 to fit more tightly with the sealing groove 121, thereby further improving the sealing effect.

[0073] In this embodiment, the thickened portion 123 does not extend inward to the clearance hole 128, that is, the diameter of the clearance hole 128 is smaller than the diameter of the inner hole formed around the thickened portion 123.

[0074] In some embodiments, the inner and outer sides of the extension 122 are flush with the inner and outer sides of the first end face 24. It should be noted that in this embodiment, "inner and outer" refers to the radial direction along the first housing 12; the side closer to the clearance hole 128 is the inner side, and the side where the first sleeve 129 is located is the outer side. Specifically, see... Figure 3 Figure 4a , Figures 13 to 15 The first connecting seat 20 includes a cylindrical outer shell 22 and an electrical component 23 disposed inside the outer shell. The first end face 24 is located at the end of the outer shell 22. The inner side wall of the extension 122 is flush with the inner peripheral wall of the outer shell 22 facing the electrical component 23, and the outer side wall of the extension 122 is flush with the outer peripheral wall of the outer shell 22 away from the electrical component 23. This results in a larger radial width of the extension 122, ensuring a larger contact area between the extension 122 and the first end face 24, thereby achieving a better sealing effect.

[0075] See Figures 6 to 8 The second end face 114 of the main body 11 is provided with a limiting protrusion 111 protruding along the axial direction of the main body 11, and the extension 122 is provided with a first limiting groove 124. Optionally, the first limiting groove 124 is formed between the thickened portion 123 and the inner peripheral wall of the first sleeve 129. The limiting protrusion 111 and the first limiting groove 124 are adapted to fit together, thereby improving the stability of the connection between the main body 11 and the first housing 12, so that the first housing 12 can better cover the outside of the main body 11.

[0076] Optionally, in one embodiment, the inner peripheral wall of the first sleeve 129 is stepped to form a first stepped surface 1291, and the outer peripheral wall of the main body 11 is stepped to form a second stepped surface 115. The second stepped surface 115 is away from the second end face 114, and the first stepped surface 1291 and the second stepped surface 115 abut against each other, thereby restricting the first housing 12 from moving relative to the main body 11 toward the direction of the first connecting seat 20.

[0077] The main body 11 includes a second housing 15 and an electrical connection structure 14 disposed within the second housing 15. The second housing 15 includes a second sleeve 113 and a first boss 112. The first boss 112 protrudes from the outer peripheral wall of the second sleeve 113 and has a second end face 114 and a second stepped surface 115. Further, the first housing 12 is provided with a second limiting groove 125. The first boss 112 is adapted to the second limiting groove 125. One of the groove walls of the second limiting groove 125 forms a first stepped surface 1291, and the groove wall of the second limiting groove 125 opposite to the first stepped surface 1291 forms a surface of the extension 122, namely the second surface 1222. Thus, by embedding the first boss 112 into the second limiting groove 125, the movement of the first housing 12 relative to the main body 11 along both sides of the axial direction can be restricted. At the same time, the contact area between the main body 11 and the first housing 12 is increased, so that the first housing 12 can better cover the main body 11 and strengthen the connection stability between the first housing 12 and the main body 11.

[0078] Furthermore, the inner peripheral wall of the first sleeve 129 and the outer peripheral wall of the main body 11 are respectively of uneven structure, and the inner peripheral wall of the first sleeve 129 and the outer peripheral wall of the main body 11 fit together. For example Figure 3 As shown, the axial section of the inner peripheral wall of the first sleeve 129 includes multiple interconnected line segments distributed sequentially along the axial direction. These segments are not collinear, thus creating an uneven structure on the inner peripheral wall of the first sleeve 129. Correspondingly, the outer peripheral wall of the main body 11 has a matching uneven structure. In this way, the contact area between the first sleeve 129 and the main body 11 is increased through the fitting and contact between their inner peripheral walls, resulting in more interlocking structures and improving the sealing performance of the connector 100.

[0079] Furthermore, the first sleeve 129 can also be made of soft rubber, and the material of the first sleeve 129 can be the same as that of the extension 122. By covering the outer periphery of the main body 11 with the soft rubber first sleeve 129, the surface of the second connector 10 can be made soft, and the second connector 10 can avoid scratching the patient when it comes into direct contact with the patient, thus improving safety.

[0080] Optionally, in one embodiment, the first sleeve 129 and the extension 122 of the first housing 12 are integrally injection molded structures. Preferably, the first sleeve 129 and the extension 122 are made of the same soft rubber material, such as PP (polypropylene), PE (polyethylene), or liquid silicone, which are elastic polymer materials. Understandably, in other embodiments, the first sleeve 129 and the extension 122 may also be made of different soft rubber materials. Of course, in another embodiment, the first sleeve 129 and the extension 122 may also be molded separately first and then bonded together.

[0081] Furthermore, the second housing 15 has a higher hardness than the first housing 12. For example, the second housing 15 can be made of hard plastic or metal, thereby supporting the soft plastic first housing 12, while the rigid main body 11 can also provide stable support for its internal electrical connection structure.

[0082] Further, see Figure 6 The second connector 10 also includes a third housing 13, one end of which passes through the first housing 12 and abuts against the end of the main body 11 away from the first connector 20. The third housing 13 is used to thread cables. Optionally, the third housing 13 is also made of soft rubber, so that it can bend to conform to the curvature of the cable, avoiding breakage, and also preventing scratches to the patient when the third housing 13 comes into direct contact with the patient. Optionally, the third housing 13 and the first housing 12 are integrally injection molded, which means that the first housing 12 has a larger length.

[0083] In some embodiments, the electrical connection structure 14 includes a plug and a slot. The plug may be disposed in the first connector 20, and the slot may be disposed in the main body 11. By inserting the plug and the slot, an electrical connection can be achieved between the first connector 20 and the second connector 10. In other embodiments, the electrical connection structure 14 may also be implemented in the form of a metal sheet and a plug.

[0084] Furthermore, the outer peripheral wall of the housing 22 is provided with external threads, and the connector 100 also includes a locking sleeve 30. The locking sleeve 30 is sleeved on the first connecting seat 20 and the second connecting seat 10. The locking sleeve 30 is provided with an internal thread that mates with the external thread. The locking sleeve 30 can be fixed by the mating of the internal thread and the external thread, thereby locking the first connecting seat 20 and the second connecting seat 10.

[0085] Furthermore, the outer wall of the extension 122 is flush with the surface where the minor diameter of the external thread is located, thereby avoiding interference between the outer wall of the extension and the internal thread of the locking sleeve 30.

[0086] See Figure 5 and Figure 6The outer wall of the first housing 12 has a first step portion 126, and the inner wall of the locking sleeve 30 has a limiting protrusion 31. When assembled in place, the limiting protrusion 31 abuts against the first step portion 126, thereby restricting the locking sleeve 30 from moving from the second connecting seat 10 to the first connecting seat 20. The locking sleeve 30 is also threadedly connected to the first connecting seat 20. In this way, the locking sleeve 30 is restricted from disengaging from the first connecting seat 20 and the second connecting seat 10, so that the first connecting seat 20 and the second connecting seat 10 are well fixed together.

[0087] Furthermore, the outer wall of the first housing 12 is also provided with a second stepped portion 127, and the first stepped portion 126 and the second stepped portion 127 are spaced apart along the axial direction of the first housing 12. (Refer to reference) Figure 9 The limiting protrusion 31 is disposed between the first step portion 126 and the second step portion 127. The width of the limiting protrusion 31 along the axial direction of the locking sleeve 30 is less than the distance between the first step portion 126 and the second step portion 127, so that the limiting protrusion 31 can have a certain amount of room for movement between the first step portion 126 and the second step portion 127. When the locking sleeve 30 is rotated and the locking sleeve 30 moves in the direction from the first connecting seat 20 to the second connecting seat 10, the second step portion 127 can axially restrict the locking sleeve 30 from completely disengaging from the first housing 12.

[0088] Furthermore, this application also provides a ventricular assist system. Specifically, the ventricular assist system includes a blood pump 200, a controller 300, and a connector 100 from any of the foregoing embodiments. In this embodiment, the first connector 20 of the connector 100 is electrically connected to the blood pump 200 via a cable, and the second connector 10 of the connector 100 is electrically connected to the controller 300 via another cable.

[0089] The aforementioned ventricular assist system connects the blood pump 200 and the controller 300 via connector 100. Connector 100 configures the second connecting seat 10 to include a main body 11 and a first housing 12 covering the main body 11. The first housing 12 is made of soft rubber, so that when the first connecting seat 20 and the second connecting seat 10 are connected and fixed, the extension 122 of the first housing 12 can seal against the first end face 24 of the first connecting seat 20, thereby achieving a sealed connection between the first connecting seat 20 and the second connecting seat 10, and thus sealing and protecting the electrical connection structure 14 between the main body 11 and the first connecting seat 20. Compared to the traditional solution using a sealing ring, the connector 100 of this application achieves a sealing function through the extension 122 of the first housing 12, eliminating the need for an additional sealing ring, reducing the number of components, and simplifying the assembly process. Meanwhile, since the extension 122 is connected to the first sleeve 129 fitted outside the main body 11, the stability is good, avoiding the sealing failure caused by the displacement of the sealing ring during the connection between the first connecting seat 20 and the second connecting seat 10, thus improving the sealing effect between the first connecting seat 20 and the second connecting seat 10. Furthermore, by covering the outer periphery of the main body 11 with the soft rubber first sleeve 129, the surface of the second connecting seat 10 becomes soft, preventing scratches to the patient when the second connecting seat 10 comes into direct contact with the patient, thus improving safety.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A connector, characterized in that, The system includes a first connecting seat and a second connecting seat, wherein the first connecting seat has a first end face; and the second connecting seat includes: The main body portion, wherein an electrical connection structure is provided between the main body portion and the first connecting seat to achieve an electrical connection, the main body portion having a second end face facing the first end face; and, A first housing includes a first sleeve and an extension connected to each other. The first sleeve covers the outer periphery of the main body. The extension is a soft rubber part and is disposed around the electrical connection structure. The extension includes a first surface and a second surface disposed opposite to each other. The second surface abuts against a second end face, such that the first sleeve and the extension of the first housing both cover the outside of the main body. The first surface abuts against the first end face. The first surface is provided with a sealing groove, and the first end face is provided with a sealing protrusion, the sealing protrusion being sealed and inserted into the sealing groove; the second surface is provided with a thickened part, the position of the thickened part corresponding to the position of the sealing groove in the axial direction of the first housing; The second end face is provided with a limiting protrusion that protrudes along the axial direction of the main body; the extension is provided with a first limiting groove, which is formed between the thickened part and the inner peripheral wall of the first sleeve, and the limiting protrusion and the first limiting groove are adapted to fit together.

2. The connector according to claim 1, characterized in that, Both the sealing protrusion and the sealing groove are arranged around the electrical connection structure and form a ring structure.

3. The connector according to claim 1, characterized in that, The height of the sealing protrusion is greater than the depth of the sealing groove.

4. The connector according to claim 1, characterized in that, The number of sealing grooves is multiple, and the multiple sealing grooves are arranged at intervals in the radial direction of the connector; the number of sealing protrusions is multiple, and the sealing protrusions are inserted into the sealing grooves one by one.

5. The connector according to claim 1, characterized in that, The orthographic projection of the sealing groove on the side where the thickened portion is located is within the thickened portion.

6. The connector according to claim 1, characterized in that, The sealing groove has a bottom wall and two side walls opposite to each other on both sides of the bottom wall. The distance between the two side walls gradually increases along the opening direction of the sealing groove. The two opposite sides of the sealing protrusion end are provided with guide surfaces for cooperating with the side walls. The distance between the two guide surfaces gradually decreases along the direction from the first end face to the second end face.

7. The connector according to claim 1, characterized in that, The width of the thickened portion in the radial direction of the connector is greater than the width of the sealing groove.

8. The connector according to claim 1, characterized in that, The inner peripheral wall of the first sleeve is stepped to form a first stepped surface, and the outer peripheral wall of the main body is stepped to form a second stepped surface. The second stepped surface is away from the second end face, and the first stepped surface and the second stepped surface abut against each other.

9. The connector according to claim 8, characterized in that, The main body includes a second housing and an electrical connector disposed within the second housing. The second housing includes a second sleeve and a first boss. The first boss protrudes from the outer peripheral wall of the second sleeve and has a second end face and a second stepped surface. The first housing is provided with a second limiting groove, the first boss is adapted to the second limiting groove, one of the groove walls of the second limiting groove forms the first stepped surface, and the other groove wall of the second limiting groove opposite to the first stepped surface forms the second surface.

10. The connector according to claim 9, characterized in that, The hardness of the second shell is greater than that of the first shell.

11. The connector according to claim 1, characterized in that, The first end face is arranged around the electrical connection structure; the inner and outer sides of the extension are flush with the inner and outer sides of the first end face.

12. The connector according to any one of claims 1 to 11, characterized in that, The first sleeve is a soft rubber part, and the first sleeve and the extension are integrally formed.

13. A ventricular assist system, characterized in that, include: Blood pump; Controller; as well as, The connector as described in any one of claims 1 to 12; The first connector is electrically connected to one of the blood pump and the controller via a cable, and the second connector is electrically connected to the other of the blood pump and the controller via another cable.

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