CN116549837A - Connectors and Ventricular Assist Systems - Google Patents

Abstract

The application relates to a connector and blood pump, the connector includes first connecting seat and second connecting seat, first connecting seat has first terminal surface, the second connecting seat includes: the main body part is provided with an electric connection structure between the main body part and the first connecting seat to realize electric connection, and the main body part is provided with a second end face; the first shell comprises a first sleeve and an extension part which are connected with each other, and the first sleeve is sleeved on the periphery of the main body part; the extension part is a soft rubber piece and surrounds the electric connection structure, the extension part comprises a first surface and a second surface which are arranged in a deviating mode, the first surface is abutted to the first end face, and the second surface is abutted to the second end face. The connector avoids the problem of sealing failure caused by displacement of the sealing ring in the process of connecting the first connecting seat with the second connecting seat, and improves the sealing effect between the first connecting seat and the second connecting seat.

Description

Connectors and Ventricular Assist Systems

technical field

The present application relates to the technical field of medical devices, in particular to a connector and a ventricular assist system.

Background technique

Cardiovascular disease has become a major cause of human death, and heart transplantation is an effective means of treating critical heart disease patients. However, in reality, there are far more heart recipients than heart donors, resulting in the death of patients waiting for a heart transplant. The blood pump can assist the heart to pump blood and is a common device for assisting the treatment of cardiovascular diseases.

After the blood pump is implanted in the human heart, the blood pump needs to be electrically connected to the external controller. Usually, the blood pump is connected to one connection socket through a connection wire, and the external controller is connected to another connection socket through another connection wire. Connecting the two connection sockets together enables the blood pump to be electrically connected to the controller. Usually, a sealing ring needs to be provided between the two connection seats to ensure the tightness of the connection. However, when the two connecting seats are butted together, the sealing ring is easily displaced due to instantaneous extrusion, resulting in poor sealing effect.

Contents of the invention

Based on this, it is necessary to provide a connector and a ventricular assist system aiming at how to improve the sealing effect of the connector.

In one aspect, the present application provides a connector, including a first connection seat and a second connection seat, the first connection seat has a first end surface, and the second connection seat includes:

a main body, an electrical connection structure is provided between the main body and the first connecting seat to realize electrical connection, and the main body has a second end surface; and,

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

In one of the embodiments, one of the first end surface and the extension part is provided with a sealing groove, and the other is provided with a sealing protrusion, and the sealing protrusion is sealingly inserted into the sealing groove, so that Both the sealing protrusion and the sealing groove are arranged around the electrical connection structure and form a ring structure.

In one of the embodiments, the height of the sealing protrusion is greater than the depth of the sealing groove.

In one of the embodiments, the extension part is provided with the sealing groove, and the side of the extension part facing away from the sealing groove is protruded with a thickened part, and the position of the thickening part is the same as that of the sealing groove. The positions correspond in the axial direction of the first housing.

In one of the embodiments, the orthographic projection of the sealing groove on the side where the thickened portion is located is located in the thickened portion.

In one embodiment, the inner and outer sides of the extension part are correspondingly flush with the inner and outer sides of the first end surface.

In one of the embodiments, the first sleeve is a soft rubber part, and the first sleeve and the extension part are integrally formed.

In one of the embodiments, the second end surface is provided with a limiting protrusion, the extension part is provided with a first limiting groove, and the limiting protrusion is fitted into the first limiting groove.

In one of the embodiments, the first limiting groove is formed between the thickened part of the extension part and the inner side wall of the first sleeve.

In one embodiment, the inner peripheral wall of the first sleeve is stepped to form a first stepped surface, the outer peripheral wall of the main body is stepped to form a second stepped surface, and the second stepped surface is away from The second end surface, and the first stepped surface abuts against the second stepped surface.

In one of the embodiments, the main body includes a second housing and an electrical connector disposed in the second housing, the second housing includes a second sleeve and a first boss, and the first a boss protrudes from the outer peripheral wall of the second sleeve, the first boss has the second end surface and the second step surface;

The first housing is provided with a second limiting groove, the first boss is adapted to the second limiting groove, and one of the groove walls of the second limiting groove constitutes the first stepped surface A groove wall of the second limiting groove opposite to the first stepped surface constitutes a surface of the extension portion.

In one of the embodiments, the hardness of the second shell is greater than that of the first shell.

On the other hand, the present application also provides a ventricular assist system, including:

blood pump;

controller; and,

connectors as described above;

The first connection seat of the connector is electrically connected to one of the blood pump and the controller through a cable, and the second connection seat of the connector is connected to the blood pump and the controller through another cable. The other of the controllers is electrically connected.

In the embodiment of the present application, the connector configures the second connecting seat to include a main body and a first shell covering the main body, and configures the extension of the first shell as a soft rubber piece, so that when the second After the first connecting seat and the second connecting seat are connected and fixed, the first end surface of the first connecting seat and the second end surface of the second connecting seat can jointly press the extension part of the first shell, so that the extension of the first shell The part can be sealed against the first end surface and the second end surface, so as to realize the sealing connection between the first connection seat and the second connection seat, and then provide sealing protection for the electrical connection structure between the main body part and the first connection seat . Compared with the traditional solution of using a separate sealing ring, the connector of the present application plays a sealing role through the extension of the first housing, and no additional sealing ring is required, which reduces the arrangement of components and facilitates the simplification of the assembly process. At the same time, since the extension part is connected and fixed to the first sleeve sleeved outside the main body part, and the position of the first sleeve is limited by the main body part, it is equivalent to the extension part being limited by the first sleeve, thus having a relatively Good stability, when the first connecting seat is connected to the second connecting seat, the extension part will not be displaced, thereby ensuring the sealing effect between the first connecting seat and the second connecting seat.

Description of drawings

Fig. 1 is a schematic structural diagram of a ventricular assist system according to an embodiment.

Fig. 2a is a schematic structural diagram of the connector shown in Fig. 1 .

Figure 2b is a front view of the connector shown in Figure 1 .

Fig. 3 is a cross-sectional view of the connector shown in Fig. 2b at section A-A.

Fig. 4a is a partially enlarged view of the point B shown in Fig. 3 .

Fig. 4b is a partial enlarged view of the first connecting seat shown in Fig. 4a at the sealing protrusion.

Figure 5 is another cross-sectional view of the connector shown in Figure 2b.

FIG. 6 is a partial enlarged view of point C shown in FIG. 5 .

Fig. 7 is a further partial enlarged view of the structure shown in Fig. 6, but the main body is not shown.

FIG. 8 is a further partial enlarged view of the second housing shown in FIG. 6 .

FIG. 9 is a schematic structural diagram of a second connecting seat according to an embodiment.

FIG. 10 is a front view of the second connecting seat shown in FIG. 9 .

FIG. 11 is a cross-sectional view of the second connecting seat shown in FIG. 10 at the D-D section.

Fig. 12 is a cross-sectional view of a second connecting seat of another embodiment.

Fig. 13 is a schematic structural view of the first connecting seat according to an embodiment.

Fig. 14 is a front view of the first connecting seat shown in Fig. 13 .

FIG. 15 is a cross-sectional view of the first connecting seat shown in FIG. 14 at the section E-E.

Explanation of reference signs:

10. The second connecting seat; 11. The main body; 111. The limit protrusion; 112. The first boss; 113. The second sleeve; 114. The second end face; 115. The second step surface; 12. The first Shell; 121, sealing groove; 122, extension; 1221, first surface; 1222, second surface; 123, thickened part; 124, first limiting groove; 125, second limiting groove; 126, second 127, the second step; 128, the escape hole; 129, the first sleeve; 1291, the first step surface; 13, the third shell; 14, the electrical connection structure; 15, the second shell; 20. First connection seat; 21. Sealing protrusion; 211. Guide surface; 22. Shell; 23. Electric component; 24. First end face; 30. Locking sleeve; 31. Limiting protrusion; 100. Connector ; 200, a blood pump; 300, a controller.

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

In the description of the present application, it should be understood that if any of these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", " Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application.

In addition, if these terms "first" and "second" appear, these terms are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, unless otherwise clearly specified and limited, if any terms such as "mounted", "connected", "connected" and "fixed" appear, these terms should be interpreted in a broad sense. For example, it can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection, or it can be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be the internal communication of two components Or the interaction relationship between two elements, unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In this application, unless otherwise clearly specified and limited, if there is a similar description that the first feature is "on" or "under" the second feature, the meaning may be that the first and second features are in direct contact, or The first and second features are in indirect contact through an intermediary. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

It should be noted that, if an element is referred to as being “fixed on” or “disposed on” another element, it may 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 intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions are used for purposes of illustration only and are not intended to be exclusive implementation.

Referring to FIG. 1 , an embodiment of the present application provides a connector 100 for connecting a controller 300 and a blood pump 200 in a ventricular assist system, so that the controller 300 and the blood pump 200 can be electrically connected through the connector 100, thereby Realize the control and power supply of the blood pump 200 . Understandably, in other embodiments, the connector 100 can also be used to connect two other detachable components.

Specifically, referring to FIGS. 2a to 4a, the connector 100 in the embodiment of the present application includes a first connection seat 20 and a second connection seat 10, and an electrical connection structure is provided between the first connection seat 20 and the second connection seat 10. 14 to achieve electrical connection. Wherein, the first connection base 20 can be connected to the blood pump 200 through a cable, and the second connection base 10 can be connected to the controller 300 through another cable. Understandably, in other embodiments, the first connection base 20 can also be used to connect to the controller 300 , and the second connection base 10 can also be used to connect to the blood pump 200 .

In the embodiment of the present application, the cross-sections of the first connecting seat 20 and the second connecting seat 10 may be substantially circular.

Since the first connection base 20 can be electrically connected to the second connection base 10 through the electrical connection structure 14, it is necessary to seal and protect the position of the electrical connection structure 14 to prevent liquids, solid particles and other substances from the first The connection position between the connection base 20 and the second connection base 10 enters into the electrical connection structure 14 to cause a short circuit or other problems.

In view of this, the second connection base 10 in the embodiment of the present application 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 connection base 20 to realize electrical connection, and the main body 11 has a second end surface 114 (as shown in FIG. 8 ), the first connecting seat 20 has a first end surface 24 (as shown in FIG. 4 b ), and the first end surface 24 is opposite to the second end surface 114 . The first casing 12 wraps around 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 sleeved on the outer periphery of the main body 11, and the extension 122 is located on the second end surface 114 and surrounds the electrical connection structure. 14 , the side of the extension portion 122 facing away from the second end surface 114 is in sealing contact with the first end surface 24 . Wherein, the extension part 122 is a soft rubber part, that is, the extension part 122 is made of soft rubber material.

As shown in FIG. 12 , specifically, the extension portion 122 includes a first surface 1221 and a second surface 1222 that are set apart from each other, the first surface 1221 is in contact with the first end surface 24, and the second surface 1222 is in contact with The second end surface 114 abuts against.

In the embodiment of the present application, the connector 100 configures the second connecting seat 10 to include the main body 11 and the first housing 12 covering the main body 11, and the first housing 12 is configured as a soft rubber, Therefore, after the first connecting seat 20 is connected and fixed to the second connecting seat 10 , the first end surface 24 of the first connecting seat 20 and the second end surface 114 of the second connecting seat 10 jointly contact the extension portion 122 of the first housing 12 . Squeeze, so that the extension 122 of the first shell 12 can seal against the first end surface 24 and the second end surface 114, thereby realizing the sealing connection between the first connecting seat 20 and the second connecting seat 10, and further The electrical connection structure 14 between the main body 11 and the first connection seat 20 is sealed and protected. Compared with the traditional solution of using a sealing ring, the connector 100 of the present application plays a sealing role through the extension part 122 of the first housing 12, and no additional sealing ring is required, which reduces the setting of parts and facilitates the simplification of assembly process. At the same time, since the extension part 122 is connected and fixed to the first sleeve 129 sleeved outside the main body part 11, and the position of the first sleeve 129 is limited by the main body part 11, it is equivalent to that the extension part 122 passes through the first sleeve 129. The position is limited so that it has better stability. When the first connecting seat 20 and the second connecting seat 10 are connected, the extension part 122 will not be displaced, thereby ensuring that the first connecting seat 20 and the second connecting seat 20 are connected to each other. The sealing effect between the connecting seats 10.

Optionally, referring to Fig. 4a, Fig. 4b, Fig. 9 to Fig. 11, in one embodiment, one of the first end surface 24 and the first surface 1221 of the extension part 122 is provided with a sealing groove 121, and the other is provided with The sealing protrusion 21 is sealed and inserted in the sealing groove 121 . For example, in this embodiment, the first end surface 24 is provided with a sealing protrusion 21 , and the extension portion 122 is provided with a sealing groove 121 . The sealing protrusion 21 is inserted into the sealing groove 121, which increases the contact area between the first end surface 24 and the extension part 122, and further improves the sealing effect between the first connecting seat 20 and the second connecting seat 10 . At the same time, the cooperation of the sealing protrusion 21 and the sealing groove 121 can also achieve a better positioning effect, which improves the connection stability and sealing performance between the first connecting seat 20 and the second connecting seat 10 .

Certainly, in some other embodiments, the sealing protrusion 21 may also be disposed on the extension portion 122 , and correspondingly, the sealing groove 121 is disposed on the first end surface 24 .

In this embodiment, both the sealing protrusion 21 and the sealing groove 121 are arranged around the electrical connection structure 14 to form a ring structure. In this way, through the cooperation of the annular sealing groove 121 and the annular sealing protrusion 21, a closed annular sealing structure can be formed between the first connecting seat 20 and the second connecting seat 10, further improving the sealing performance between the first connecting seat 20 and the second connecting seat 10. Sealing effect between 10.

Optionally, in an embodiment, there are multiple sealing grooves 121 , and the multiple sealing grooves 121 are arranged at intervals in the radial direction of the connector 100 . Correspondingly, the number of sealing protrusions 21 is also multiple, and the plurality of sealing protrusions 21 are arranged at corresponding intervals, and the sealing protrusions 21 are inserted in the sealing groove 121 one by one, so that the first connecting seat 20 and Multiple seals are formed between the second connecting seats 10 .

In some embodiments, the shape of the sealing protrusion 21 matches the shape of the sealing groove 121, so that the sealing protrusion 21 and the sealing groove 121 can fit each other without leaving a gap, thereby achieving a better sealing effect, and at the same time It can also play a better positioning effect.

In some other embodiments, since the extension part 122 itself has elasticity, the shape of the sealing protrusion 21 may not completely match the shape of the sealing groove 121 in the initial state, but after being assembled in place, the sealing protrusion 21 may By extruding the extension part 122 , the sealing groove 121 is deformed and adapted to the shape of the sealing protrusion 21 .

Specifically, in a specific 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 surface 24, and the depth H2 of the sealing groove 121 refers to the depth of the sealing groove 121 recessed in the extension part 122, In this way, 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 groove bottom wall of the sealing groove 121, so that the groove bottom wall of the sealing groove 121 is deformed and depressed, thereby making the sealing protrusion The force between 21 and the groove bottom wall of the sealing groove 121 is greater, and the sealing effect is better.

Please refer to FIG. 11 again, in some embodiments, the sealing groove 121 is in a flaring shape. Specifically, the sealing groove 121 has a groove bottom wall and two groove side walls oppositely disposed on both sides of the groove bottom wall. Along the opening direction of the sealing groove 121 , the distance between the two groove side walls gradually increases. That is, the side wall of the groove is inclined relative to the bottom wall of the groove, so that the opening of the sealing groove 121 forms a flaring structure, which makes it easier for the sealing protrusion 21 to be inserted into the sealing groove 121 . The groove side walls may be inclined straight walls or curved walls.

Please refer to Fig. 4b again, the two opposite sides of the end of the sealing protrusion 21 are provided with guide surfaces 211 for matching with the side walls of the groove, along the direction where the first end surface 24 points to the second end surface 114, between the two guide surfaces 211 The distance between them gradually decreases, making it easier for the sealing protrusion 21 to be inserted into the sealing groove 121 . Likewise, the guiding surface 211 may be an inclined flat surface or an arcuate surface.

Further, please refer to Fig. 5, Fig. 6 and Fig. 11 in combination. After the sealing groove 121 is set on the extension part 122, the thickness of the extension part 122 is small and the strength is relatively weak. The abutment of the spring 21 will be subject to a relatively large force, resulting in the groove bottom wall of the sealing groove 121 being easily pierced. Therefore, in order to prevent the groove bottom wall of the sealing groove 121 from being pierced, in some embodiments, the side of the extension portion 122 away from the sealing groove 121, that is, the second surface 1222 is protrudingly provided with a thickened portion 123, and the position of the thickened portion 123 is the same as The position of the seal groove 121 corresponds to the axial direction of the first housing 12, thereby increasing the thickness of the extension part 122 at the position where the seal groove 121 is opened, improving the structural strength, and avoiding the groove bottom wall of the seal groove 121 being damaged by Risk of being pierced and damaged by excessive force.

The position of the thickened part 123 and the position of the sealing groove 121 correspond to the axial direction of the first housing 12, which means that the orthographic projection of the sealing groove 121 on the side where the thickened part 123 is located is at least partly located in the thickened part 123 . Optionally, the orthographic projection of the seal groove 121 on the side where the thickened portion 123 is located is all located in the thickened portion 123, so that the thickened portion 123 can increase the thickness of the entire area where the seal groove 121 is located, avoiding the The sealing groove 121 causes the phenomenon of thin wall fracture.

In the embodiment of the present application, the thickened portion 123 is also arranged in a ring shape around the electrical connection structure 14 . Along the radial direction of the first housing 12 , the width of the sealing groove 121 is smaller than or equal to the width of the thickened portion 123 .

Referring to FIG. 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 surface 114 of the main body 11, and the contact area between the wider thickened portion 123 and the second end surface 114 of the main body 11 is also larger, which is equivalent to increasing the extension portion 122 and the main body. 11 connection stability and tightness, and also has a better supporting effect on the first connection seat 20.

In the embodiment of the present application, the extension portion 122 is disposed around the electrical connection structure 14 , which means that the extension portion 122 surrounds and forms an escape hole 128 , and the escape hole 128 passes through the power connection structure 14 . Wherein, the thickened portion 123 may constitute a part of the hole wall of the escape hole 128 , that is, the thickened portion 123 extends to the edge of the avoidance hole 128 in the radial direction of the first housing 12 .

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 in the first housing 12 in the axial direction, so that while preventing the groove bottom wall of the sealing groove 121 from being penetrated due to excessive force, the smaller thickened portion 123 can undergo relatively large elastic deformation, forcing the sealing to protrude 21 is more closely combined with the sealing groove 121, further improving the sealing effect.

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

In some embodiments, the inner and outer sides of the extension portion 122 are correspondingly flush with the inner and outer sides of the first end surface 24 . It should be noted that the inside and outside in this embodiment refer to the radial direction of the first casing 12 , the side close to the escape hole 128 is inside, and the side where the first sleeve 129 is located is outside. Specifically, referring to Fig. 3 Fig. 4a, Fig. 13 to Fig. 15, the first connection seat 20 includes a cylindrical shell 22 and an electrical element 23 arranged in the shell, the first end surface 24 is located at the end of the shell 22, and the extension part The inner side wall of 122 is flush with the inner peripheral wall of the casing 22 facing the electric element 23, and the outer side wall of the extension part 122 is flush with the outer peripheral wall of the casing 22 away from the electric element 23, so that the radial width of the extension part 122 is larger, ensuring There is a larger contact area between the extension portion 122 and the first end surface 24 , thereby achieving a better sealing effect.

6 to 8, the second end surface 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 part 122 is provided with a first limiting groove 124. Optionally, the second A limiting slot 124 is formed between the thickened portion 123 and the inner peripheral wall of the first sleeve 129 . The limiting protrusion 111 fits into the first limiting groove 124 , so as to improve the combination stability between the main body 11 and the first housing 12 , so that the first housing 12 is better wrapped around the main body 11 .

Optionally, in one embodiment, the inner peripheral wall of the first sleeve 129 is stepped to form the first stepped surface 1291, the outer peripheral wall of the main body 11 is stepped to form the second stepped surface 115, and the second stepped surface 115 faces away from the second end surface 114 , and the first stepped surface 1291 abuts against the second stepped surface 115 , thereby restricting the movement of the first housing 12 relative to the main body 11 toward the first connecting seat 20 .

The main body 11 includes a second housing 15 and an electrical connector 14 disposed in the second housing 15, the second housing 15 includes a second sleeve 113 and a first boss 112, and the first boss 112 protrudes on the On the peripheral wall of the second sleeve 113 , the first boss 112 has a second end surface 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, and one of the groove walls of the second limiting groove 125 constitutes a first stepped surface 1291, A groove wall of the second limiting groove 125 opposite to the first stepped surface 1291 constitutes a surface of the extension portion 122 , that is, the second surface 1222 . In this way, by embedding the first boss 112 in the second limiting groove 125, the movement of the first casing 12 relative to the main body 11 along both sides in the axial direction can be restricted, and at the same time, the size of the main body 11 and the first casing 12 can be enlarged. The contact area enables the first housing 12 to better cover the outside of the main body 11 and enhances the stability of the connection between the first housing 12 and the main body 11 .

Furthermore, the inner peripheral wall of the first sleeve 129 and the outer peripheral wall of the main body 11 respectively have uneven structures, and the inner peripheral wall of the first sleeve 129 and the outer peripheral wall of the main body 11 are fitted together. For example, as shown in FIG. 3 , the axial cross-section of the inner peripheral wall of the first sleeve 129 includes a plurality of connected line segments distributed sequentially in the axial direction, and the line segments are not collinearly arranged, so that the inner peripheral wall of the first sleeve 129 forms concavities and convexities. Uneven structure. Correspondingly, the outer peripheral wall of the main body portion 11 is provided with matching uneven structures. In this way, the contact area between the first sleeve 129 and the main body 11 is increased through the fit and fit of the inner peripheral wall of the first sleeve 129 and the outer peripheral wall of the main body 11 , so that the distance between the first sleeve 129 and the main body 11 There are more interfitting structures between them, thereby improving the sealing performance of the connector 100 .

Further, 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 part 122 . By covering the outer periphery of the main body 11 with the first sleeve 129 made of soft rubber, the appearance of the second connecting seat 10 can be made soft, and the second connecting seat 10 can avoid scratching the patient when it is in direct contact with the patient, thereby improving safety. sex.

Optionally, in an embodiment, the first sleeve 129 and the extension part 122 of the first housing 12 are integrally formed by injection molding. Preferably, the first sleeve 129 and the extension part 122 are made of the same soft rubber material, such as PP (polypropylene, polypropylene) material, PE (polyethylene, polyethylene) or liquid silicone and other elastic polymer materials. . Understandably, in other embodiments, the first sleeve 129 and the extension part 122 are also made of different soft rubber materials. Certainly, in another embodiment, the first sleeve 129 and the extension part 122 may also be formed independently first, and then glued together.

Further, the hardness of the second shell 15 is greater than that of the first shell 12 . For example, the second housing 15 can be made of hard rubber or metal, so as to support the first housing 12 made of soft rubber, and meanwhile, the hard main body 11 can also stably support the internal electrical connector structure.

Further, referring to FIG. 6 , the second connection base 10 also includes a third housing 13 , one end of the third housing 13 is passed through the first housing 12 and docked with the end of the main body 11 away from the first connection base 20 . The third housing 13 is used for passing cables. Optionally, the third shell 13 is also made of soft rubber material, so that it can be bent according to the bending of the cable to avoid breaking the cable, and at the same time, the third shell 13 can also avoid scratching the patient when it is in direct contact with the patient. Optionally, the third housing 13 and the first housing 12 are integrally injection-molded, that is, the first housing 12 has a larger length.

In some embodiments, the electrical connection structure 14 includes a plug and a socket, the plug can be set on the first connection seat 20, the socket can be set on the main body 11, and the first connection can be realized by inserting the plug and the socket. The electrical connection between the socket 20 and the second connection socket 10. In other embodiments, the electrical connection structure 14 may also be implemented in the form of metal sheets and plugs.

Further, the outer peripheral wall of the housing 22 is provided with external threads, the connector 100 also includes a locking sleeve 30, the locking sleeve 30 is sleeved on the first connecting seat 10 and the second connecting seat 20, and the locking sleeve 30 is provided with an outer thread. The internal threads that are threaded can fix the locking sleeve 30 through the cooperation of the internal threads and the external threads, thereby realizing locking the first connecting seat 20 and the second connecting seat 10 .

Further, the outer sidewall of the extension part 22 is flush with the surface where the small diameter of the external thread is located, so as to avoid interference between the outer sidewall of the extension part and the inner thread of the locking sleeve 30 .

5 and 6, the outer wall of the first housing 12 is formed with a first step portion 126, and the inner wall of the locking sleeve 30 is protruded with a limiting convex portion 31, when assembled in place, the limiting convex portion 31 and the first step part 126 abuts, thereby restricting the movement of the locking sleeve 30 from the second connecting seat 10 to the direction of the first connecting seat 20, and the locking sleeve 30 is screwed with the first connecting seat 20, thus jointly restricting the locking sleeve 30 It is separated 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.

Further, the outer wall of the first casing 12 is further provided with a second stepped portion 127 , and the first stepped portion 126 and the second stepped portion 127 are arranged at intervals along the axial direction of the first casing 12 . Referring to FIG. 9 , the limiting convex portion 31 is disposed between the first stepped portion 126 and the second stepped portion 127 , and the width of the limiting convex portion 31 along the axial direction of the locking sleeve 30 is smaller than that of the first stepped portion 126 and the second stepped portion 126 . The distance between the steps 127 makes the stopper 31 have a certain space between the first step 126 and the second step 127. When the locking sleeve 30 is rotated, the locking sleeve 30 faces the first connecting seat. When the locking sleeve 30 is moved in the direction of the second connecting seat 10 , the second step portion 127 can restrict the locking sleeve 30 from completely detaching from the first housing 12 in the axial direction.

Further, the embodiment of the present application also provides a ventricular assist system. Specifically, the ventricular assist system includes a blood pump 200, a controller 300, and the connector 100 of any one of the foregoing embodiments. Wherein, in this embodiment, the first connecting seat 20 of the connector 100 is electrically connected to the blood pump 200 through a cable, and the second connecting seat 10 of the connector 100 is electrically connected to the controller 300 through another cable.

The ventricular assist system is connected to the blood pump 200 and the controller 300 through the connector 100, wherein the connector 100 configures the second connection base 10 to include a main body 11 and a first housing 12 covering the main body 11, and The first shell 12 is configured as a soft rubber piece, so that when the first connecting seat 20 is connected and fixed to the second connecting seat 10, the extension part 122 of the first shell 12 can be sealed against the first connecting seat 20. One end surface 24 , so as to realize the sealed connection between the first connecting seat 20 and the second connecting seat 10 , and further seal and protect the electrical connection structure 14 between the main body 11 and the first connecting seat 20 . Compared with the traditional solution of using a sealing ring, the connector 100 of the present application plays a sealing role through the extension part 122 of the first housing 12, and no additional sealing ring is required, which reduces the setting of parts and facilitates the simplification of assembly process. At the same time, since the extension part 122 is connected to the first sleeve 129 sleeved outside the main body part 11, the stability is good, and the displacement of the sealing ring during the connection process between the first connection seat 20 and the second connection seat 10 is avoided. The problem of sealing failure is improved, and the sealing effect between the first connecting seat 20 and the second connecting seat 10 is improved. At the same time, by covering the outer periphery of the main body 11 with the first sleeve 129 of soft rubber material, the appearance of the second connecting seat 10 can be made soft. When the second connecting seat 10 directly contacts with the patient, it can avoid scratching the patient, improving the safety.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (13)

1. A connector, comprising a first connecting seat and a second connecting seat, wherein the first connecting seat is provided with a first end surface; wherein, the second connecting seat includes:

the main body part is provided with an electric connection structure between the main body part and the first connecting seat to realize electric connection, and the main body part is provided with a second end face facing the first end face; the method comprises the steps of,

the first shell comprises a first sleeve and an extension part which are connected with each other, and the first sleeve is sleeved on the periphery of the main body part; the extension part is a soft rubber piece and surrounds the electric connection structure, the extension part comprises a first surface and a second surface which are arranged in a deviating mode, the first surface is abutted to the first end face, and the second surface is abutted to the second end face.

2. The connector of claim 1, wherein one of the first end face and the first surface is provided with a sealing groove, the other one is provided with a sealing protrusion, the sealing protrusion is inserted into the sealing groove in a sealing manner, and the sealing protrusion and the sealing groove are arranged around the electrical connection structure and are in an annular structure.

3. The connector of claim 2, wherein a height of the seal protrusion is greater than a depth of the seal groove.

4. The connector according to claim 2, wherein the first surface is provided with the seal groove, and the second surface is convexly provided with a thickened portion, and a position of the thickened portion corresponds to a position of the seal groove in an axial direction of the first housing.

5. The connector of claim 4, wherein an orthographic projection of the seal groove on a side of the thickened portion is located within the thickened portion.

6. The connector of claim 1, wherein the second end face is provided with a limit protrusion, the extension is provided with a first limit groove, and the limit protrusion and the first limit groove are adapted to be inserted.

7. The connector of claim 6, wherein the first limit groove is formed between a thickened portion of the extension and an inner peripheral wall of the first sleeve.

8. The connector according to claim 1, wherein an inner peripheral wall of the first sleeve is stepped to form a first stepped surface, an outer peripheral wall of the main body portion is stepped to form a second stepped surface, the second stepped surface faces away from the second end surface, and the first stepped surface and the second stepped surface abut.

9. The connector of claim 8, wherein the body portion includes a second housing and an electrical connector disposed within the second housing, the second housing including a second sleeve and a first boss protruding from an outer peripheral wall of the second sleeve, the first boss having the second end face and the second step face;

the first shell is provided with a second limit groove, the first boss is matched with the second limit groove, one groove wall of the second limit groove forms the first step surface, and the other groove wall of the second limit groove opposite to the first step surface forms the second surface.

10. The connector of claim 9, wherein the second housing has a hardness greater than the hardness of the first housing.

11. The connector of claim 1, wherein the first end face is disposed around the electrical connection structure; the inner side and the outer side of the extension part are correspondingly flush with the inner side and the outer side of the first end face.

12. The connector of any one of claims 1 to 11, wherein the first sleeve is a flexible glue piece and the first sleeve and the extension are of an integrally formed construction.

13. A ventricular assist system, comprising:

a blood pump;

a controller; the method comprises the steps of,

the connector of any one of claims 1 to 12;

the first connecting seat of the connector is electrically connected with one of the blood pump and the controller through a cable, and the second connecting seat of the connector is electrically connected with the other one of the blood pump and the controller through another cable.