Cable structure and ventricle auxiliary device

Abstract

The utility model belongs to the field of cable sealing, and discloses a cable structure and a ventricle auxiliary device, the cable structure comprises a cable body and a connecting piece, the cable body comprises an outer tube and an inner core arranged in the outer tube, the far end of the outer tube is provided with a notch end face, and one end of the inner core extends out of the notch end face; the connecting piece is arranged at the far end of the cable body, the connecting piece is provided with a via hole in the axial direction, the inner diameter of the via hole is larger than the outer diameter of the outer pipe, the end, provided with the notch end face, of the cable body is arranged in the via hole, the inner core extends out of the far end face of the via hole, the notch end face is provided with a sealing layer, and the sealing layer is arranged on the inner core. The sealing layer adheres to the end face of the notch in an attached mode, and the inner core adheres to the sealing layer and penetrates through the sealing layer. By forming multiple sealing layers, the sealing effect of the end face of the cable can be improved, and bacteria are prevented from spreading and breeding to pollute a product.

Description

Technical Field

[0001] The utility model relates to the technical field of cable sealing, in particular to a cable structure and a ventricular assist device. Background Art

[0002] The ventricular assist device includes a blood pump placed in the body, a control host outside the body, and a cable for connecting the blood pump and the control host. The cable is divided into multiple sections, including an optoelectronic hybrid cable (the optoelectronic hybrid cable includes conductive wires, optical fibers, etc.), a junction box, a cable conduit, etc. that are connected in sequence.

[0003] One end of the optoelectronic hybrid cable is a customized plug, and the other end is a loose wire extending out of the outer tube of the optoelectronic hybrid cable. The customized plug of the optoelectronic hybrid cable is connected to the matching control host, and the loose wire end of the optoelectronic hybrid cable is connected to the junction box through a connector, and the junction box is connected to the blood pump, thereby realizing the connection between the control host and the blood pump. When the loose wire end of the optoelectronic hybrid cable is connected to the junction box, the loose wire extending out of the outer tube of the optoelectronic hybrid cable is connected to the electronic components inside the junction box. After assembly, the loose wire extending out of the outer tube of the optoelectronic hybrid cable is sealed inside the junction box. Compared with the existing external plug-in connection method, the loose wire is directly sealed in the junction box to avoid affecting the reliability of the product due to plug-in. However, the loose wire needs to extend out of the outer tube of the cable, and the commonly used medical product sterilization method cannot penetrate the cable epidermis, making it impossible to completely eliminate bacteria and other microorganisms inside the cable. The exposed cable interior (loose wire) will overflow with bacteria during long-term storage in the junction box, polluting the sterile environment of the product. Therefore, how to prevent the spread and reproduction of bacteria inside the cable and contaminate the product is a problem that needs to be solved at present. Utility Model Content

[0004] The purpose of this application is to provide a cable structure and a ventricular assist device to improve the sealing effect of the cable end face and prevent bacteria from spreading and multiplying and contaminating the product.

[0005] The technical solutions provided by this application are as follows:

[0006] In one aspect, a cable structure is provided, comprising:

[0007] The cable body comprises an outer tube and an inner core arranged in the outer tube, wherein the distal end of the outer tube is provided with a cut end surface, and one end of the inner core extends out of the cut end surface;

[0008] A connector is arranged at the distal end of the cable body, the connector is provided with a through hole along the axial direction, the inner diameter of the through hole is larger than the outer diameter of the outer tube, the cable body is provided with an end of the cut end face and is arranged in the through hole, the inner core extends out of the distal end face of the through hole, the cut end face is provided with a sealing layer, the sealing layer is bonded to the cut end face, and the inner core is bonded to the sealing layer and passes through the sealing layer.

[0009] In some embodiments, the sealing layer is not adhered to the inner wall surface of the via hole.

[0010] In some embodiments, the sealing layer includes at least a first sealing layer and a second sealing layer, the first sealing layer is bonded to the cut end surface, and the second sealing layer is bonded to a side of the first sealing layer away from the cut end surface.

[0011] In some embodiments, a shaping space for molding the first sealing layer and the second sealing layer is formed between the cut end surface, the distal end surface of the via hole, and the inner wall surface of the via hole close to the distal end surface.

[0012] In some embodiments, the second sealing layer is located outside the distal end surface of the connector; or;

[0013] The first sealing layer and the second sealing layer are both located outside the distal end surface of the connecting member.

[0014] In some embodiments, the sum of the thicknesses of the first sealing layer and the second sealing layer along the axial direction of the cable body is 3 to 6 mm; or;

[0015] The sealing layer further includes a third sealing layer connected to the second sealing layer, and the sum of the thicknesses of the first sealing layer, the second sealing layer and the third sealing layer along the axial direction of the cable body is 3 to 6 mm.

[0016] In some embodiments, the outer surface of the outer tube is provided with scale lines along the axial direction corresponding to the proximal region of the connector.

[0017] In some embodiments, a glue layer is filled between the inner wall of the connecting member and the outer wall of the outer tube to fixedly connect the connecting member and the cable body.

[0018] In some embodiments, a glue injection port is provided on a side wall of the connector, the glue injection port is communicated with the via hole, and a distance from the glue injection port to a distal end surface of the via hole is greater than a thickness of the sealing layer.

[0019] On the other hand, a ventricular assist device is also provided, comprising a junction box, a blood pump, a control host and the cable structure described in any of the above embodiments, the distal end of the connector is connected to the proximal end of the junction box, the blood pump is connected to the distal end of the junction box, and the proximal end of the cable body is connected to the control host.

[0020] The technical effect of the present application is that by forming a sealing layer on the incision end surface, the incision end surface can be completely sealed, so that bacteria and other microorganisms inside the outer tube will not spread outward from the incision end surface of the cable, so as to avoid contamination of products such as blood pumps.

[0021] In a preferred embodiment, the sealing layer is not adhered to the inner wall surface of the through hole of the connector, and after the end surface sealing of the cut is completed, the relative position of the cable body and the connector can be adjusted to better assemble with the components of the junction box.

[0022] In a preferred embodiment, the sealing layer is not adhered to the inner wall surface of the through hole of the connector, so that the cable body can move relative to the connector for multiple potting, and then the sealing layer forms a first sealing layer and a second sealing layer in batches, thereby preventing incomplete sealing due to a single potting process, avoiding the presence of bubbles in a single-layer sealing layer that affects the sealing effect, and improving the sealing effect of the incision end face. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present application is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0024] Figure 1 It is a structural schematic diagram of a cable structure provided in a specific embodiment of the present application;

[0025] Figure 2 It is a structural schematic diagram of the connection between the cable structure and the junction box provided in a specific embodiment of the present application.

[0026] Description of Figure Numbers:

[0027] 100, cable body; 110, outer tube; 111, cut end surface; 120, inner core; 200, connector; 210, distal end surface; 220, glue filling port; 300, sealing layer; 310, first sealing layer; 320, second sealing layer; 400, junction box. DETAILED DESCRIPTION

[0028] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0029] In order to more clearly illustrate the application embodiments or technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0030] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0031] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

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

[0033] In the embodiments shown in the drawings, directional indications (such as up, down, left, right, front, and back, etc.) are not absolute but relative when describing the structure and movement of each component, and are not used to limit the direction of the product in actual use.

[0034] In addition, in the description of the present application, ordinal numbers, such as "first", "second", etc., are only used to distinguish and describe related objects, and cannot be understood as indicating or implying the relative importance or order between the related objects.

[0035] In one embodiment of the present application, Figure 1 As shown, a cable structure includes a cable body 100 and a connector 200, the cable body 100 includes an outer tube 110 and an inner core 120 arranged in the outer tube 110, the distal end of the outer tube 110 is provided with a cut end face 111, and one end of the inner core 120 extends out of the cut end face 111; the connector 200 is arranged at the distal end of the cable body 100, the connector 200 is axially provided with a through hole, the inner diameter of the through hole is larger than the outer diameter of the outer tube 110, one end of the cable body 100 provided with the cut end face 111 is arranged in the through hole, the inner core 120 extends out of the distal end face 210 of the through hole, the cut end face 111 is provided with a sealing layer 300, the sealing layer 300 is bonded to the cut end face 111, and the inner core 120 is bonded to the sealing layer 300 and passes through the sealing layer 300.

[0036] In this embodiment, Figure 2As shown, the distal end of the cable body 100 refers to the end connected to the junction box 400, and the distal end of the connector 200 is also the end connected to the junction box 400; the proximal end of the cable body 100 is the end connected to the control host (not shown in the figure), that is, the proximal end of the cable body 100 refers to the end away from the junction box 400, and the proximal end of the connector 200 is the end away from the junction box 400.

[0037] The cable body 100 may be an optoelectronic hybrid cable or other cables that can achieve signal transmission. The cable body 100 includes an outer tube 110 and an inner core 120 disposed in the outer tube 110. The inner core 120 can achieve signal transmission. The inner core 120 may include a conductive wire and an optical fiber connector. Optionally, the cable body 100 also includes a filling material, which is disposed in the outer tube 110 and is flush with the cut end face 111 of the outer tube 110. The filling material may include filling materials such as cotton thread for buffering and shielding nets for anti-interference. The filling material exposed at the cut end face 111 will affect the filling effect of the sealant. Therefore, it is necessary to clean up the debris other than the inner core 120 in the sealing section near the cut end face 111 to obtain a relatively clean and flat cut end face 111, that is, after the sealing is finally completed, there is no filling material such as cotton thread and shielding net in the sealing section to improve the sealing effect of the cable.

[0038] A connector 200 is provided at the far end of the cable body 100. The connector 200 may be an existing structure on the cable. The cable body 100 is connected to the junction box 400 via the connector 200. A through hole is provided on the connector 200. The through hole penetrates the connector 200 axially. The ratio of the inner diameter of the through hole to the outer diameter of the outer tube 110 is less than 1.2, that is, the inner diameter of the through hole is slightly larger than the outer diameter of the outer tube 110, so that the cable body 100 can move axially along the through hole relative to the connector 200 when it is passed through the through hole.

[0039] In this embodiment, the sealing layer 300 is formed by glue injection on the cut end surface 111 of the cable body 100, which can achieve complete sealing of the cable cut end surface 111, so that bacteria and other microorganisms inside the outer tube 110 will not spread outward from the cut end surface 111 of the cable, thereby avoiding contamination of products such as blood pumps.

[0040] In one embodiment, the sealing layer 300 is not adhered to the inner wall surface of the through hole of the connector 200. After the sealing of the cut end surface 111 is completed, the relative position of the cable body 100 and the connector 200 can be adjusted to better assemble with the components in the junction box 400.

[0041] The sealing layer 300 at least includes a first sealing layer 310 and a second sealing layer 320. The first sealing layer 310 is bonded to the cut end face 111, and the second sealing layer 320 is bonded to the side of the first sealing layer 310 away from the cut end face 111. The sealing layer 300 is not bonded to the inner wall surface of the through hole of the connector 200, so that the cable body 100 can move relative to the connector 200 to perform multiple potting, and then the sealing layer 300 forms the first sealing layer 310 and the second sealing layer 320 in batches, so as to prevent the situation that the sealing is not completely completed due to the one-time potting process, and avoid the bubbles in the single-layer sealing layer affecting the sealing effect, so as to improve the sealing effect of the cut end face 111.

[0042] Specifically, the first sealing layer 310 and the second sealing layer 320 are not adhered to the connector 200 after curing, so that after the first sealing layer 310 is formed, the cable body 100 can move relative to the connector 200 in the axial direction in the through hole to perform secondary potting to form a multi-layer sealing layer 300. Exemplarily, the material of the connector 200 is silicone, and the first sealing layer 310 and the second sealing layer 320 are formed by curing a light-curing adhesive, and the model of the light-curing adhesive can be Dymax 1-CN0024 or LOCTITE 3921UV, etc., the light-curing glue does not adhere to the silicone after curing, so that the cable body 100 can move axially relative to the connector 200. Of course, the sealing layer of this embodiment can also use other glues that do not adhere to silicone, as long as the first sealing layer 310 and the second sealing layer 320 can be fixed without adhering to the connector 200. The first sealing layer 310 and the second sealing layer 320 are not adhered to the connector 200, and the relative positions of the first sealing layer 310, the second sealing layer 320 and the connector 200 can be adjusted. For example, the second sealing layer 320 can be located outside the distal surface 210 of the connector 200; or the first sealing layer 310 and the second sealing layer 320 are both located outside the distal surface 210 of the connector 200; or a portion of the first sealing layer 310 is located in the through hole of the connector 200, another portion of the first sealing layer 310 is located outside the distal surface 210 of the connector 200, and the second sealing layer 320 is located outside the distal surface 210 of the connector 200; so as to adjust the relative positions of the cable body 100 and the connector 200, thereby facilitating the connection between the connector 200 and the junction box 400.

[0043] In another embodiment, an isolating member that is not adhered to the first sealing layer 310 and the second sealing layer 320 can be placed on the inner wall of the connector 200. After the first sealing layer 310 is fixed to form a sealing layer, the cable body 100 can be moved axially relative to the isolating member to facilitate the movement of the cable body 100 to form a multi-layer sealing layer 300. After the multi-layer sealing layer 300 is solidified, the isolating member is taken out of the connector 200. At this time, the first sealing layer 310 and the second sealing layer 320 are not adhered to the connector 200. The first sealing layer 310 and the second sealing layer 320 can be moved axially relative to the connector 200 to adjust the relative position of the cable body 100 and the connector 200.

[0044] In one embodiment, a shaping space formed by the first sealing layer 310 and the second sealing layer 320 can be formed between the cut end surface 111 of the cable body 100, the distal end surface 210 of the via hole, and the inner wall surface of the via hole close to the distal end surface 210. The sealant is slowly injected into the shaping space with a syringe and a needle until the sealant is flush with the distal end surface 210 of the via hole, so that the sealant fills the gaps between the inner cores 120, between the inner core 120 and the outer tube 110, or fills the gaps between the inner cores 120, between the inner core 120 and the outer tube 110, and between the outer tube 110 and the inner wall of the connector 200, and bubbles are driven out; then wait for the sealant to be fixed The curing method includes but is not limited to light curing, curing box curing, etc. After fixing, a first sealing layer 310 can be formed. The sealing layer refers to a layer of glue that can play a sealing role formed after the filled sealant is cured. After the first sealing layer 310 is formed, the cut end face 111 of the cable body 100 continues to be moved into the via hole, that is, the cable body 100 is moved toward the proximal end face of the via hole, and the above glue pouring operation is repeated to form a second sealing layer 320 at the far end of the first sealing layer 310, that is, the glue pouring is completed in multiple times to form a multi-layer sealing layer. The multi-layer sealing layer refers to a multi-layer structure formed by the first sealing layer 310 and the second sealing layer 320 being adhered together. After a plurality of sealing layers 300 are formed on the cut end surface 111 of the cable body 100, the cable body 100 can still move axially relative to the connector 200. In this embodiment, the number of sealing layers 300 can be set according to actual sealing requirements, and this embodiment does not specifically limit it. For example, glue can be poured 2, 3 or more times to form two, three or more sealing layers, respectively.

[0045] Preferably, the thickness of the multi-layer sealing layer along the axial direction of the cable body 100 is 3 to 6 mm, that is, when the multi-layer sealing layer includes the first sealing layer 310 and the second sealing layer 320, the sum of the thickness of the first sealing layer 310 and the second sealing layer 320 is 3 to 6 mm; when the multi-layer sealing layer 300 includes the first sealing layer 310, the second sealing layer 320 and the third sealing layer arranged in sequence along the axial direction, the sum of the thickness of the first sealing layer 310, the second sealing layer 320 and the third sealing layer is 3 to 6 mm; and by analogy, when the multi-layer sealing layer 300 is a four-layer sealing layer, the sum of the thickness of the four-layer sealing layer is 3 to 6 mm. The sealing layer 300 of this thickness can not only ensure the good sealing of the cut end face 111 of the cable body 100, but also prevent the waste of sealant caused by the overly thick sealing layer 300. In this embodiment, when the multi-layer sealing layer 300 seals the cut end face 111, the first sealing layer 310 is located at the distal end of the cut end face 111, and can wrap a small area of ​​the outer tube 110 located at the proximal end of the cut end face 111 to improve the sealing effect of the cut end face 111. In this embodiment, the existing connector 200 structure on the cable is used as the shaping space of the first sealing layer 310 and the second sealing layer 320 to achieve the glue injection sealing of the cable cut end face 111, without the need for an additional injection mold, thereby reducing production costs.

[0046] In a preferred embodiment, the outer surface of the outer tube 110 is provided with scale lines along the axial direction corresponding to the proximal region of the connector 200. The scale lines are provided on the surface of the outer tube 110 of the cable body 100 near the proximal end of the connector 200, so that the relative position of the cable body 100 and the connector 200 can be determined during the potting process, ensuring that the thickness of the final sealing layer 300 meets the requirements, and improving the sealing effect of the cut end surface 111 of the cable body 100.

[0047] In a preferred embodiment, after the multi-layer sealing layer 300 is formed, the space between the inner wall of the connector 200 and the outer wall of the outer tube 110 is filled with a potting compound to fix the connector 200 and the cable body 100. Figure 1 As shown, the side wall of the connector 200 is provided with a glue injection port 220 , which is connected to the via hole. The distance from the glue injection port 220 to the distal end surface 210 of the via hole is greater than the thickness of the multi-layer sealing layer 300 .

[0048] After the cut end face 111 of the cable body 100 is sealed with glue, the cable body 100, the connector 200 and the junction box 400 are pre-assembled, the relative positions of the various components are adjusted, and then the glue injection port 220 on the side wall of the connector 200 and / or the gap near the through hole are injected with potting glue. The potting glue is a glue that can adhere to the connector 200 and the outer tube 110, or the connector 200 and the outer tube 110 are bonded and fixed by AB glue. After the potting glue is cured, the connector 200 and the cable body 100 can be fixed to fix the relative positions of the connector 200 and the cable body 100. The distance between the glue injection port 220 on the side wall of the connector 200 and the far end face 210 of the through hole is greater than the thickness of the multi-layer sealing layer 300, so as to prevent the sealant from flowing out of the glue injection port 220 on the side wall of the connector 200 when the sealant is injected.

[0049] The present application also provides an embodiment of a ventricular assist device, such as Figure 2 As shown, it includes a junction box 400, a blood pump, a control host and a cable structure as described in any of the above embodiments, the cable structure is as shown in Figure 1 As shown, the distal end of the connector 200 is connected to the proximal end of the junction box 400, the blood pump is connected to the distal end of the junction box 400, and the proximal end of the cable body 100 is connected to the control host.

[0050] The connector 200 connects the cable body 100 and the junction box 400. The connector 200 and the junction box 400 can be connected by means of threads or buckles. The connector 200 is the structure of the cable itself. The sealing of the cut end face 111 of the cable body 100 is achieved by the connector 200, which can save additional potting molds and reduce production costs. The cut end face 111 of the cable body 100 is potted in stages to form a multi-layer sealing layer 300, which can improve the sealing effect to prevent bacteria inside the cable from spreading and multiplying and contaminating the blood pump.

[0051] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0052] It should be noted that the above embodiments can be freely combined as needed. The above is only the preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A cable structure, characterized in that: include: The cable body comprises an outer tube and an inner core arranged in the outer tube, wherein the distal end of the outer tube is provided with a cut end surface, and one end of the inner core extends out of the cut end surface; A connector is arranged at the distal end of the cable body, the connector is provided with a through hole along the axial direction, the inner diameter of the through hole is larger than the outer diameter of the outer tube, the cable body is provided with an end of the cut end face and is arranged in the through hole, the inner core extends out of the distal end face of the through hole, the cut end face is provided with a sealing layer, the sealing layer is bonded to the cut end face, and the inner core is bonded to the sealing layer and passes through the sealing layer.

2. A cable structure according to claim 1, characterized in that: The sealing layer is not adhered to the inner wall surface of the via hole.

3. A cable structure according to claim 2, characterized in that: The sealing layer at least includes a first sealing layer and a second sealing layer, wherein the first sealing layer is bonded to the cut end surface, and the second sealing layer is bonded to a side of the first sealing layer away from the cut end surface.

4. A cable structure according to claim 3, characterized in that: A shaping space for molding the first sealing layer and the second sealing layer is formed between the cut end surface, the distal end surface of the via hole, and the inner wall surface of the via hole close to the distal end surface.

5. A cable structure according to claim 3, characterized in that: The second sealing layer is located outside the distal end surface of the connecting member; or; The first sealing layer and the second sealing layer are both located outside the distal end surface of the connecting member.

6. A cable structure according to claim 3, characterized in that: The sum of the thickness of the first sealing layer and the second sealing layer along the axial direction of the cable body is 3 to 6 mm; or; The sealing layer further includes a third sealing layer connected to the second sealing layer, and the sum of the thicknesses of the first sealing layer, the second sealing layer and the third sealing layer along the axial direction of the cable body is 3 to 6 mm.

7. A cable structure according to any one of claims 1 to 6, characterized in that: The outer surface of the outer tube is provided with scale lines along the axial direction corresponding to the proximal end area of ​​the connecting piece.

8. A cable structure according to claim 1, characterized in that: A glue layer is filled between the inner wall of the connecting piece and the outer wall of the outer tube to fix the connecting piece and the cable body.

9. A cable structure according to claim 8, characterized in that: A glue injection port is provided on the side wall of the connector, the glue injection port is communicated with the via hole, and the distance from the glue injection port to the distal end surface of the via hole is greater than the thickness of the sealing layer.

10. A ventricular assist device, characterized in that: It comprises a junction box, a blood pump, a control host and the cable structure according to any one of claims 1 to 9, wherein the distal end of the connector is connected to the proximal end of the junction box, the blood pump is connected to the distal end of the junction box, and the proximal end of the cable body is connected to the control host.

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