Cable connection structure and pump flow assist device

Abstract

The utility model discloses a cable connecting structure and pump flow auxiliary equipment. The cable connecting structure comprises a connecting device, a sheath tube assembly, a sleeve assembly and a cable. The connecting device comprises a shell and a connector assembly installed in the shell. The sheath tube assembly is installed at the far end of the shell. The sleeve assembly is installed at the near end of the shell. The cable comprises a first section and a second section, the far end of the first section penetrates through the sleeve assembly and extends into the shell, the near end of the second section penetrates through the sheath assembly and extends into the shell, and the near end of the second section is connected to the far end of the first section through the connector assembly; and the mounting positions of at least two of the joint assembly, the sheath assembly and the sleeve assembly relative to the shell are adjustable along the axial direction of the shell. According to the cable, the installation positions of at least two of the connector assembly, the sheath tube assembly and the sleeve assembly can be flexibly adjusted, the risk that the first section and the second section are stretched or extruded and bent after being connected is reduced, and the stability and identifiability of cable transmission signals are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, and in particular to a cable connection structure and a pump flow assist device. BACKGROUND

[0002] In a pump flow assist device, it is often necessary to use a cable to connect devices inside and outside a patient in communication. For example, when an interventional pump flow catheter is inserted and operated, due to high-speed driving of the impeller, the impeller will drive the entire motor to produce axial movement, and if the pump flow catheter is not completely fixed outside the body, the motor will deviate from the placement position, so a fiber optic pressure sensor or a differential pressure sensor is needed to provide feedback through a change in current converted from an optical signal / hydraulic pressure, to help the user adjust the relative position of the pump flow catheter in a timely manner.

[0003] Currently, the cable connecting the devices inside and outside the patient is relatively long, and has high requirements for manufacturing and cost. If the cable is divided into two parts, and the two parts of the cable are connected through a fixed plug-in structure, however, the length of each part of the cable may deviate, and the length of a certain part of the cable may be too short to cause the cable to be stretched, or the length of a certain part of the cable may be too long to cause the cable to be squeezed and bent. SUMMARY

[0004] The present application provides a cable connection structure and a pump flow assist device, which is beneficial to improve the stability and recognizability of cable signal transmission.

[0005] The present application provides a cable connection structure, which includes a connecting device, a sheath assembly, a sleeve assembly, and a cable. The connecting device includes a housing and a connector assembly mounted in the housing; the sheath assembly is mounted at the distal end of the housing; the sleeve assembly is mounted at the proximal end of the housing; the cable includes a first segment and a second segment, the distal end of the first segment extends into the housing through the sleeve assembly, the proximal end of the second segment extends into the housing through the sheath assembly, and the proximal end of the second segment is connected to the distal end of the first segment through the connector assembly; the mounting positions of at least two of the connector assembly, the sheath assembly, and the sleeve assembly relative to the housing are adjustable along the axial direction of the housing.

[0006] In some embodiments, the mounting positions of the connector assembly and the sheath assembly relative to the housing are adjustable along the axial direction of the housing.

[0007] In some implementations, the mounting positions of the connector assembly and the sheath assembly relative to the housing are adjustable along the axial direction of the housing, and the mounting position of the sleeve assembly relative to the housing is fixed along the axial direction of the housing.

[0008] In some embodiments, the joint assembly comprises a joint seat and a first plug, the first plug is plugged into the joint seat, one of the distal end of the first section and the proximal end of the second section is connected to the first plug, and the other is directly or indirectly connected to the joint seat; the joint seat is mounted on the housing, and the mounting position of the joint seat relative to the housing is adjustable along the axial direction of the housing.

[0009] In some implementations, the joint assembly further comprises a second plug, the distal end of the first section is connected to the first plug, and the proximal end of the second section is connected to the second plug, and the first plug and the second plug are plugged into the joint seat to realize the butt joint of the first section and the second section, thereby realizing the signal transmission between the two sections.

[0010] In some embodiments, the joint seat comprises a first limiting portion, the housing is provided with a plurality of fixing holes spaced along the axial direction of the housing, and the connecting device comprises at least one fixing pin, the fixing pin passes through the fixing hole and is in contact with the first limiting portion to limit the relative movement between the first limiting portion and the housing.

[0011] In some embodiments, the connecting device comprises a first radial limiting portion, the first radial limiting portion protrudes from the inner wall of the housing and extends along the axial direction of the housing, the first radial limiting portion has a first limiting surface away from the inner wall of the housing, and the joint seat is in contact with the first limiting surface; and / or, the connecting device comprises a second radial limiting portion, the second radial limiting portion protrudes from the inner wall of the housing and extends along the axial direction of the housing, the second radial limiting portion has a second limiting surface away from the inner wall of the housing, and the sheath assembly is in contact with the second limiting surface.

[0012] In some embodiments, the sheath assembly comprises a sheath and a sheath connector, the sheath connector is mounted in the housing, the sheath is fixedly connected to the sheath connector, at least part of the sheath extends out of the distal end of the housing, and a part of the second section passes through the sheath.

[0013] In some embodiments, the joint assembly comprises a first elastic member, the first elastic member is arranged inside the first plug, and the first elastic member can apply an axial force towards the second section to the first section connected to the first plug, or the first elastic member can apply an axial force towards the first section to the second section connected to the first plug.

[0014] In some embodiments, the connecting device comprises an adhesive member, and the sheath connector is adhered to the inner wall of the housing by the adhesive member.

[0015] In some embodiments, the shell comprises a shell body and a sheath protection shell connected to a distal end of the shell body; the sheath connector is inserted into the sheath protection shell, and the second axial limiting portion protrudes from the inner circumferential surface of the sheath protection shell; the shell comprises a first limiting wall protruding from the inner wall of the shell body; in the axial direction of the shell, the second axial limiting portion is located between the proximal end surface of the sheath protection shell and the first limiting wall; in the axial direction of the shell, the size of the second axial limiting portion is d1, and the distance between the proximal end surface of the sheath protection shell and the first limiting wall is d2, d1 < d2.

[0016] In some embodiments, the sleeve assembly comprises a sleeve and a sleeve connector, the sleeve connector is installed in the shell, and the protective sleeve is connected to the sleeve connector; the shell is provided with a limiting groove, and the third axial limiting portion of the sleeve connector is at least partially accommodated in the limiting groove.

[0017] In some embodiments, the shell comprises a shell body and a sheath protection shell connected to a distal end of the shell body; the sheath connector is inserted into the sheath protection shell, and the second axial limiting portion protrudes from the inner circumferential surface of the sheath protection shell; the shell comprises a first limiting wall protruding from the inner wall of the shell body; in the axial direction of the shell, the second axial limiting portion is located between the proximal end surface of the sheath protection shell and the first limiting wall; in the axial direction of the shell, the size of the second axial limiting portion is d1, and the distance between the proximal end surface of the sheath protection shell and the first limiting wall is d2, d1 < d2.

[0018] In the second aspect, the embodiments of the present application provide a pump flow auxiliary device, which comprises a pump flow guide tube and the cable connection structure according to any one of the embodiments of the first aspect, and the distal end of the sheath assembly and the distal end of the second section are both connected to the pump flow guide tube.

[0019] In some embodiments, the pump flow guide tube is a blood pump guide tube or a thrombus suction guide tube.

[0020] The embodiments of the present application divide the cable into the first section and the second section, which can be manufactured and transported in sections, reducing the length of the cable to be manufactured and transported, and facilitating to reduce the manufacturing difficulty and cost of the cable to a greater extent, thereby reducing the manufacturing difficulty and cost of the pump flow auxiliary device.

[0021] The embodiments of the present application can be provided that at least two of the sheath assembly, the sleeve assembly and the connector assembly are movably installed in the shell in the axial direction, which can flexibly adjust the installation position of the sheath assembly, the sleeve assembly and the connector assembly in the shell according to the actual length of the first section and the second section, thereby reducing the phenomenon that the first section and the second section are stretched or squeezed and bent after being connected, and facilitating to improve the stability and recognizability of the cable signal transmission, and further improve the accuracy of the pump flow auxiliary device. Attached Figure Description

[0022] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0023] Figure 1 This is an exploded structural diagram of the cable connection structure provided in some embodiments of this application.

[0024] Figure 2 This is a cross-sectional schematic diagram of a cable connection structure provided in some embodiments of this application in one state.

[0025] Figure 3 yes Figure 2 The diagram shown shows the cable connection structure with the shell structure partially hidden.

[0026] Figure 4 This is a cross-sectional schematic diagram of the cable connection structure provided in some embodiments of this application in another state.

[0027] Figure 5 yes Figure 4 The diagram shown shows the cable connection structure with the shell structure partially hidden.

[0028] Figure 6 yes Figure 4 A magnified structural diagram of region A in the middle.

[0029] Figure 7 yes Figure 4 A magnified structural diagram of region B in the middle.

[0030] Figure 8 yes Figure 4 A magnified structural diagram of region C in the middle.

[0031] Figure 9 yes Figure 1 The diagram shows a partial structural schematic of the cable connection structure.

[0032] Figure 10 yes Figure 1 An exploded view of the sheath connector and sheath protective shell of the cable connection structure shown.

[0033] Figure 11 This is a cross-sectional view of a pump flow auxiliary device provided in some embodiments of this application.

[0034] The reference numerals in the accompanying drawings for the specific embodiments are as follows:

[0035] Cable connection structure 1, sheath assembly 10, sheath 11, sheath connector 12, second axial limiting part 121, sheath connecting body 122, first circumferential limiting protrusion 123, sleeve assembly 20, sleeve 21, sleeve connector 22, third axial limiting part 221, sleeve connecting body 222, connecting device 30, shell 31, fixing hole 311, first limiting wall 312, shell body 313, first shell 3131, second shell 3132, sheath protection shell 314, first limiting recess 3141, first inner circumferential surface 314a, proximal end surface 314b, limiting groove 315, proximal end side wall 315a, distal end side wall 315b, sleeve protection shell 316, inner circumferential surface 316a, distal end surface 316b, inner wall 31a, joint assembly 33, joint seat 331, first limiting part 3311, seat body 3312, first plug 332, second plug 333, first elastic member 334, second elastic member 335, fixing pin 34, first radial limiting part 35, first limiting surface 351, adhesive 36, second radial limiting part 37, second limiting surface 371, cable 40, first section 41, second section 42, axial direction X;

[0036] Pump flow auxiliary device 2, pump flow conduit 3, driving member 301, sensor 302. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application.

[0038] The terms “first”, “second”, “third”, and the like in the specification and claims of the present application or in the above drawings are used to distinguish different objects, and are not used to describe a specific order or primary and secondary relationship. In the embodiments of the present application, the same reference signs represent the same components, and for brevity, detailed descriptions of the same components are omitted in different embodiments.

[0039] In the present application, “embodiment” means that the specific features, structures, or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiment, nor is it mutually exclusive or alternative to other embodiments.

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the embodiments of the present application, "parallel" not only includes the case of absolute parallel, but also includes the case of approximate parallel which is generally recognized in engineering; at the same time, "perpendicular" not only includes the case of absolute perpendicular, but also includes the case of approximate perpendicular which is generally recognized in engineering. Illustratively, the included angle between two directions is 85°-95°, which can be considered as perpendicular; the included angle between two directions is 0°-10°, which can be considered as parallel.

[0042] The heart is an important organ that provides power for blood circulation in the human body. When suffering from heart diseases such as heart failure, the cardiac output of the heart is difficult to meet the needs of the body, and blood pumping assistance equipment becomes an important treatment means.

[0043] The blood pumping catheter in the blood pumping assistance equipment passes through the skin surface, penetrates the access, and enters the target blood vessel or the appropriate position of the blood transfusion organ to provide auxiliary blood circulation support for the patient, reduce the heart burden and oxygen consumption of the patient, and help the recovery of heart function.

[0044] In the blood pumping assistance equipment, it is usually necessary to use a cable to communicate and connect the equipment inside and outside the patient to help the user monitor and timely adjust the blood pumping catheter inside the patient. At present, the cable connecting the equipment inside and outside the patient is relatively long, and the requirements for manufacturing and cost are high.

[0045] In order to reduce the manufacturing difficulty and reduce the cost, in some embodiments, the cable can be divided into two parts, and the two parts of the cable are connected through a plug-in structure fixed in the operating handle. However, in actual situation, the length of each part of the cable may have a size deviation, and the length of a certain part of the cable may be too short to cause the cable to be stretched after plugging, or the length of a certain part of the cable may be too long to cause the cable to be squeezed and bent after plugging. These phenomena may cause signal attenuation or interruption, so that the equipment outside the patient cannot recognize the communication signal and cannot monitor and adjust the blood pumping catheter inside the patient.

[0046] Therefore, this application provides a cable connection structure including a connecting device, a sheath assembly, a sleeve assembly, and a cable. The connecting device includes a housing and a connector assembly. A first segment of the cable passes through the sleeve assembly, and a second segment of the cable passes through the sheath assembly. The proximal end of the second segment is connected to the distal end of the first segment via the connector assembly. The mounting positions of at least two of the connector assembly, sheath assembly, and sleeve assembly relative to the housing are adjustable along the axial direction of the housing. The mounting positions of at least two of the connector assembly, sheath assembly, and sleeve assembly within the housing can be flexibly adjusted according to the actual lengths of the first and second segments, thereby reducing the phenomenon of stretching or bending after the first and second segments are connected, which is beneficial to improving the stability and identifiability of the cable transmission signal.

[0047] The cable connection structure provided in this application will be further described below with reference to the accompanying drawings.

[0048] Reference Figures 1 to 10 According to a first aspect of this application, an embodiment of this application provides a cable connection structure 1, which includes a sheath assembly 10, a sleeve assembly 20, a connecting device 30, and a cable 40. The connecting device 30 includes a housing 31 and a connector assembly 33 installed within the housing 31. The sheath assembly 10 is installed at the distal end of the housing 31. The sleeve assembly 20 is installed at the proximal end of the housing 31. The cable 40 includes a first segment 41 and a second segment 42, the distal end of the first segment 41 passing through the sleeve assembly 20 and extending into the housing 31. The proximal end of the second segment 42 passes through the sheath assembly and extends into the housing 31. The proximal end of the second segment 42 is connected to the distal end of the first segment 41 via the connector assembly 33. At least two of the connector assembly 33, the sheath assembly 10, and the sleeve assembly 20 are adjustable in position relative to the housing 31.

[0049] In this embodiment, the axial direction X of the housing 31 can be the direction in which the proximal end and the distal end of the housing 31 are opposite each other. Optionally, the axial direction X of the housing 31 can be parallel to the axis of the sheath 50. The central axis of the housing 31 can coincide with the central axis of the sheath 50. It should be noted that, in this embodiment, the distal end and proximal end are relative to the operator using the cable connection structure 1. The distal end can refer to the end away from the operator using the cable connection structure 1, and the proximal end can refer to the end close to the operator using the cable connection structure 1. This will not be described again below.

[0050] In this embodiment, the sheath assembly 10 may be connected to the end of the housing 31 furthest from the operator, and the cannula assembly 20 may be connected to the end of the housing 31 closest to the operator. The end of the second segment 42 furthest from the operator is used to connect to internal patient equipment, such as a blood pumping catheter or a thrombus aspiration catheter. The end of the second segment 42 closest to the operator is connected to the end of the first segment 41 furthest from the operator via a connector assembly 33. The end of the first segment 41 closest to the operator may be connected to other external devices, such as monitoring devices, display devices, or control devices. At least a portion of the sheath assembly 10 may be a partially flexible and bendable structure, which is percutaneously inserted into the corresponding target blood vessel or transfusion organ of the patient. The sheath assembly 10 is used to connect internal patient equipment to the external connection device 30.

[0051] The first segment 41 can be a section of the cable 40 for connection to equipment outside the patient's body. At least a portion of the first segment 41 is housed within the sheath assembly 20, which provides protection for the first segment 41. Optionally, the sheath assembly 20 can be an insulating sleeve made of rubber, silicone, or other suitable material, covering at least a portion of the first segment 41. The second segment 42 can be a section of the cable 40 for connection to equipment inside the patient's body. A portion of the second segment 42 is housed within the sheath assembly 10, which provides protection for the second segment 42.

[0052] The first segment 41 and the second segment 42 can be set coaxially, which helps to increase the connection area between them and improve the stability and accuracy of their signal connection.

[0053] Optionally, the sleeve assembly 20 is partially located inside and partially outside the housing 31 to fit over a portion of the first segment 41 inside the housing 31 and a portion of the first segment 41 extending near the end of the housing 31.

[0054] The distal end of the first segment 41 and the proximal end of the second segment 42 can be signal-connected inside the connector assembly 33, which can secure the connection between the first segment 41 and the second segment 42. The first segment 41 and the second segment 42 can establish a signal connection by abutment, plugging, or other suitable means. For example, the cable 40 can be an optical fiber, with the distal end face of the first segment 41 and the proximal end face of the second segment 42 positioned opposite each other and abutting.

[0055] In the embodiments of this application, "the mounting position of a component relative to the housing is adjustable along the axial direction of the housing" means that before the component is installed in the housing, its mounting position within the housing can be adjusted along the axial direction of the housing. It is understood that after the mounting position is determined, the component can be fixed relative to the housing. For example, "the mounting position of the connector assembly 33 relative to the housing is adjustable along the axial direction X of the housing 31" means that before installing the connector assembly 33 in the housing 31, its mounting position relative to the housing 31 can be adjusted along the axial direction of the housing 31. After the mounting position of the connector assembly 33 is determined, the connector assembly 33 can be fixed relative to the housing 31 to improve its installation stability.

[0056] In some examples, the mounting positions of the connector assembly 33 and the sheath assembly 10 relative to the housing 31 are adjustable along the axial direction X of the housing 31, while the mounting position of the sleeve assembly 20 within the housing 31 is fixed and cannot be adjusted. In actual use, the mounting position of the connector assembly 33 within the housing 31 can be determined according to the actual length of the first segment 41, so that the first segment 41 is in a naturally elongated state without being stretched, compressed, or bent. At this time, the position of the proximal end of the second segment 42 relative to the housing 31 is determined. Then, the mounting position of the sheath assembly 10 is adjusted according to the actual length of the second segment 42, so that the distal end of the second segment 42 moves synchronously along the axial direction X with the sheath assembly 10, ultimately so that the second segment 42, which passes through the sheath assembly 10, is in a naturally elongated state without being stretched, compressed, or bent.

[0057] In other examples, the mounting positions of the connector assembly 33 and the sleeve assembly 20 relative to the housing 31 are adjustable along the axial direction X of the housing 31, while the mounting position of the sheath assembly 10 within the housing 31 is fixed and cannot be adjusted. In actual use, the mounting position of the connector assembly 33 within the housing 31 can be determined according to the actual length of the second segment 42, so that the second segment 42 is in a naturally elongated state without being stretched, compressed, or bent. At this time, the position of the distal end of the first segment 41 relative to the housing 31 is determined. Then, the mounting position of the sleeve assembly 20 is adjusted according to the actual length of the first segment 41, so that the proximal end of the first segment 41 moves synchronously along the axial direction X with the sleeve assembly 20, ultimately so that the first segment 41, which passes through the sleeve assembly 20, is in a naturally elongated state without being stretched, compressed, or bent.

[0058] In some other examples, the mounting positions of the sheath assembly 10 and the sleeve assembly 20 relative to the housing 31 are adjustable along the axial direction X of the housing 31, while the mounting position of the connector assembly 33 within the housing 31 is fixed and cannot be adjusted. In actual use, the positions of the distal end of the first segment 41 and the proximal end of the second segment 42 relative to the housing 31 can be determined based on the mounting position of the connector assembly 33; then, the mounting position of the sleeve assembly 20 can be adjusted according to the actual length of the first segment 41, so that the proximal end of the first segment 41 moves synchronously along the axial direction X with the sleeve assembly 20, ultimately ensuring that the first segment 41, which passes through the sleeve assembly 20, is in a naturally elongated state without being stretched, compressed, or bent; then, the mounting position of the sheath assembly 10 within the housing 31 can be determined according to the actual length of the second segment 42, so that the second segment 42 is in a naturally elongated state without being stretched, compressed, or bent.

[0059] In some other examples, the mounting positions of the sheath assembly 10, sleeve assembly 20, and connector assembly 33 relative to the housing 31 are all adjustable along the axial direction X of the housing 31. In actual use, the position of one of them relative to the housing 31 can be determined first, and then the positions of the other two relative to the housing 31 can be adjusted according to the actual lengths of the first segment 41 and the second segment 42, so that the first segment 41 and the second segment 42 are in a naturally elongated state without being stretched, compressed, or bent.

[0060] Once the installation position of the sheath assembly 10 relative to the housing 31 is determined, it can be connected to the far end of the housing 31 by interference fit, insertion, bonding, fasteners or other suitable means, and fixed relative to the housing 31, so as to reduce the risk of axial movement of the sheath assembly 10 during use and improve the installation stability of the sheath assembly 10.

[0061] Once the installation position of the sleeve assembly 20 relative to the housing 31 is determined, it can be connected to the near end of the housing 31 by interference fit, insertion, bonding, fasteners or other suitable means, and fixed relative to the housing 31, so as to reduce the risk of axial movement of the sleeve assembly 20 during use and improve the installation stability of the sleeve assembly 20.

[0062] Once the installation position of the connector assembly 33 relative to the housing 31 is determined, it can be connected to the housing 31 by interference fit, plug-in, bonding, fasteners or other suitable means, and fixed relative to the housing 31, so as to reduce the risk of axial movement of the connector assembly 33 during use and improve the installation stability of the connector assembly 33.

[0063] The distal end of the first segment 41 and the proximal end of the second segment 42 can be connected to the connector assembly 33 by plugging, interference fit or other suitable means.

[0064] In this embodiment, the cable 40 is divided into a first segment 41 and a second segment 42. The first segment 41 and the second segment 42 can be manufactured and transported in segments, which reduces the length of the cable to be manufactured and transported. This helps to reduce the manufacturing difficulty and cost of the cable 40 to a large extent, thereby reducing the manufacturing difficulty and cost of the cable connection structure 1.

[0065] In this embodiment, the mounting position of at least two of the connector assembly 33, sheath assembly 10, and sleeve assembly 20 relative to the housing 31 is set to be adjustable along the axial direction X of the housing 31. The mounting position of at least two of the connector assembly 33, sheath assembly 10, and sleeve assembly 20 within the housing 31 can be flexibly adjusted according to the actual length of the first segment 41 and the second segment 42. This reduces the phenomenon of the first segment 41 and the second segment 42 being stretched or squeezed and bent after connection, which is beneficial to improving the stability and identifiability of the cable transmission signal.

[0066] In some embodiments, the mounting positions of the connector assembly 33 and the sheath assembly 10 relative to the housing 31 are adjustable along the axial direction X of the housing 31.

[0067] In some embodiments, refer to Figure 2 , Figure 4 and Figure 6 The connector assembly 33 includes a connector base 331 and a first plug 332. The first plug 332 is inserted into the connector base 331. One of the distal end of the first segment 41 and the proximal end of the second segment 42 is connected to the first plug 332, and the other is directly or indirectly connected to the connector base 331. The connector base 331 is mounted on the housing 31, and the mounting position of the connector base 331 relative to the housing 31 is adjustable along the axial direction X of the housing 31.

[0068] In some examples, the distal end of the first segment 41 is connected to the first plug 332, and the proximal end of the second segment 42 is directly or indirectly connected to the connector 331. In other examples, the distal end of the first segment 41 is directly or indirectly connected to the connector 331, and the proximal end of the second segment 42 is connected to the first plug 332.

[0069] One of the distal end of the first segment 41 and the proximal end of the second segment 42 can be connected to the first plug 332 by snap-fit, interference fit, plug-in or other suitable means, thereby indirectly connecting to the connector 331. The other of the distal end of the first segment 41 and the proximal end of the second segment 42 can be directly connected to the connector 331 by snap-fit, interference fit, plug-in or other suitable means, or can be indirectly connected to the connector 331 by other structures (e.g., plugs).

[0070] The mounting position of the connector 331 within the housing 31 is adjustable along the axial direction X, thereby making the positions of the first plug 332, the distal end of the first segment 41, and the proximal end of the second segment 42 adjustable along the axial direction X.

[0071] Optionally, one of the first plug 332 and the connector 331 may be provided with a latch, so that the first plug 332 is inserted into the connector 331 and latched onto the connector 331. This can improve the connection stability between the first plug 332 and the connector 331, reduce the risk of the first plug 332 becoming loose or shifting within the connector 331, and facilitate a more stable signal connection between the first segment 41 and the second segment 42.

[0072] The first plug 332 and the connector 331 can be any suitable connector structure. Optionally, the first plug 332 can be an LC connector, an SC connector or an FC connector, and the connector 331 is a connector that is adapted to the first plug 332.

[0073] In this embodiment, the connector assembly 33 is configured as two pluggable parts. The first segment 41 and the second segment 42 can be connected to the two parts of the connector assembly 33 respectively, which helps to reduce the connection difficulty of the first segment 41 and the second segment 42 and improve the connection and assembly efficiency of the first segment 41 and the second segment 42.

[0074] In some embodiments, refer to Figure 6 The connector assembly 33 also includes a second plug 333, which is inserted into the connector base 331. The distal end of the first segment 41 is connected to the first plug 332, and the proximal end of the second segment 42 is connected to the second plug 333.

[0075] The first plug 332 can be inserted into the connector 331 from the proximal end of the connector 331, and the second plug 333 can be inserted into the connector 331 from the distal end of the connector 331.

[0076] Optionally, one of the second plug 333 and the connector 331 may be provided with a latch, so that the second plug 333 is inserted into the connector 331 and latched onto it. This can improve the connection stability between the second plug 333 and the connector 331, reduce the risk of the second plug 333 becoming loose or shifting within the connector 331, and facilitate a more stable signal connection between the first segment 41 and the second segment 42.

[0077] The second plug 333 may have the same structure as the first plug 332 or it may have a different structure. Optionally, the first plug 332 and the second plug 333 may have the same structure and be symmetrically arranged, which is beneficial to improving the compatibility and replaceability of the first plug 332 and the second plug 333.

[0078] In this embodiment, the connector assembly 33 is configured to include a connector base 331 and two plugs. The two plugs are respectively connected to the far end of the first segment 41 and the near end of the second segment 42. The two plugs can be connected to the first segment 41 and the second segment 42 respectively and then plugged into the connector base 331. This simplifies the connection operation between the connector assembly 33 and the first segment 41, as well as between the connector assembly 33 and the second segment 42, and reduces the connection difficulty.

[0079] In some embodiments, refer to Figure 6 and Figure 9 The connector 331 includes a first limiting part 3311. The housing 31 is provided with a plurality of fixing holes 311 distributed at intervals along the axial direction of the housing 31. The connecting device 30 includes at least one fixing pin 34. The fixing pin 34 passes through the fixing hole 311 and connects with the first limiting part 3311 to limit the relative movement between the first limiting part 3311 and the housing 31.

[0080] The retaining pin 34 can be engaged with the first limiting portion 3311 by insertion, abutment, threaded connection or other suitable means. For example, the retaining pin 34 can abut against the first limiting portion 3311 along the axial direction X of the housing 31.

[0081] Optionally, the first limiting part 3311 can be a protrusion, and the fixing pin 34 abuts against the protrusion along the axial direction X. There is at least one first limiting part 3311 and at least two fixing pins 34, which abut against the first limiting part 3311 in two opposite directions parallel to the axial direction X, thereby restricting the movement of the connector seat 331 along the axial direction X.

[0082] The connector 331 may include a body 3312, to which a first limiting portion 3311 is connected. The first limiting portion 3311 may protrude from the outer surface of the body 3312 facing the fixing hole 311. The body 3312 may be generally a hollow cylinder, prism, or other suitable shape.

[0083] In some alternative embodiments, the first limiting portion 3311 may also be a recess or a through hole, with the fixing pin 34 inserted into the recess or through hole and abutting against the side wall of the recess or the hole wall of the through hole. In these examples, there may be one or more first limiting portions 3311 and fixing pins 34, with each first limiting portion 3311 and fixing pin 34 corresponding to each other.

[0084] Multiple fixing holes 311 are spaced apart along the axial direction X, facilitating flexible selection of fixing holes 311 that mate with fixing pin 34. Specifically, after determining the installation position of connector assembly 33, fixing pin 34 can be inserted into the fixing hole 311 at a suitable position according to the position of first limiting part 3311 in the axial direction X, so that fixing pin 34 abuts against first limiting part 3311 along the axial direction X.

[0085] In this embodiment, the first limiting part 3311 and the fixing pin 34 cooperate to limit the displacement of the connector seat 331 in the axial direction X, thereby limiting the connector seat 331 in the axial direction X and reducing the risk of axial movement after the installation position of the connector assembly 33 is determined.

[0086] In some embodiments, refer to Figures 2 to 5 ,as well as Figure 9 The connecting device 30 includes a first radial limiting part 35, which protrudes from the inner wall 31a of the housing 31 and extends along the axial direction X of the housing 31. The first radial limiting part 35 has a first limiting surface 351 away from the inner wall 31a of the housing 31, and the connector seat 331 abuts against the first limiting surface 351.

[0087] The connector seat 331 can abut against the first limiting surface 351 along the radial direction of the housing 31, and the radial direction of the housing 31 is perpendicular to the axial direction of the housing 31. It should be noted that, in the embodiments of this application, the radial direction of the housing 31 refers to the radial direction of the cylinder with the central axis of the housing 31 as the central axis.

[0088] The first radial limiting part 35 extends along the axial direction X, and the connector seat 331 is less likely to interfere with the first radial limiting part 35 when it moves axially. The connector seat 331 can move axially along the first radial limiting part 35, that is, the connector seat 331 moves along the extension direction of the first limiting surface 351. The first radial limiting part 35 can also guide the axial movement of the connector seat 331 to a certain extent.

[0089] Optionally, there can be multiple first radial limiting portions 35, which are distributed at intervals along the circumference of the housing 31 to radially limit the connector seat 331 at multiple different positions, thereby improving the radial limiting effect of the connector seat 331. It is understood that, in the embodiments of this application, the circumference of the housing 31 refers to the circumference of a cylinder with the central axis of the housing 31 as its central axis.

[0090] The first radial limiting part 35 can restrict the connector seat 331 radially along the housing 31, which helps to reduce the shaking of the connector seat 331, improve the installation stability of the connector seat 331, and thus improve the connection stability of the first section 41 and the second section 42.

[0091] In some embodiments, refer to Figure 6 The connector assembly 33 includes a first elastic element 334 disposed inside the first plug 332. The first elastic element 334 can apply an axial force toward the second segment 42 to the first segment 41 connected to the first plug 332, or the first elastic element 334 can apply an axial force toward the first segment 41 to the second segment 42 connected to the first plug 332.

[0092] The first elastic element 334 is capable of elastic expansion and contraction along the axial direction X. For example, the first elastic element 334 can be a spring.

[0093] Optionally, the distal end of the first segment 41 is connected to the first plug 332, and the first elastic member 334 is capable of applying an axial force toward the second segment 42 to the distal end of the first segment 41. In some examples, the distal end of the first elastic member 334 may be connected to an axial limiting portion on the first segment 41, and the proximal end of the first elastic member 334 may be connected to the first plug 332. The first elastic member 334 may be in a compressed state, thereby generating an elastic force toward the second segment 42 on the first segment 41. In other examples, the proximal end of the first elastic member 334 may be connected to an axial limiting portion on the first segment 41, and the distal end of the first elastic member 334 may be connected to the first plug 332. The first elastic member 334 may be in a stretched state, thereby generating an elastic force toward the second segment 42 on the first segment 41.

[0094] Alternatively, the proximal end of the second segment 42 can be connected to the first plug 332. The first elastic member 334 can apply an axial force toward the first segment 41 to the proximal end of the second segment 42. The connection relationship between the first elastic member 334 and the second segment 42, as well as the principle of generating the elastic force, are similar to those of the first segment 41, so they will not be described in detail here.

[0095] In this embodiment of the application, a first elastic element 334 is provided in the first plug 332. The first elastic element 334 can absorb the dimensional tolerances and assembly tolerances of the first segment 41 and / or the second segment 42 in the axial direction X, so that the connection between the first segment 41 and the second segment 42 is tighter (for example, the distal end face of the first segment 41 and the proximal end face of the second segment 42 fit more tightly), which is beneficial to stabilizing the communication signal between the first segment 41 and the second segment 42.

[0096] In some embodiments, refer to Figure 6 The connector assembly 33 includes a second elastic member 335 disposed inside the second plug 333. The first elastic member 334 is capable of applying an axial force toward the second segment 42 to the first segment 41 connected to the first plug 332, and the second elastic member 335 is capable of applying an axial force toward the first segment 41 to the second segment 42 connected to the second plug 333.

[0097] The second elastic element 335 is capable of elastic expansion and contraction along the axial direction X. For example, the second elastic element 335 can be a spring.

[0098] The second elastic element 335 and the first elastic element 334 may have the same or different structures.

[0099] The connection relationship between the second elastic element 335 and the second segment 42 can be the same as the connection relationship between the first elastic element 334 and the first segment 41, and will not be described again here. The connection relationship between the second elastic element 335 and the second plug 333 can be the same as the connection relationship between the first elastic element 334 and the first plug 332, and will not be described again here.

[0100] In this embodiment, the first elastic element 334 absorbs the dimensional and assembly tolerances of the first segment 41, and the second elastic element 335 absorbs the dimensional and assembly tolerances of the second segment 42. This can further improve the connection stability of the first segment 41 and the second segment 42 after both the first plug 332 and the second plug 333 are plugged into the connector 331, thereby improving the stability of signal transmission.

[0101] In some embodiments, the sheath assembly 10 includes a sheath 11 and a sheath connector 12, the sheath connector 12 being installed within the housing 31, the sheath 11 being fixedly connected to the sheath connector 12, at least a portion of the sheath 11 extending beyond the distal end of the housing 31, and a portion of the second segment 42 passing through the sheath 11.

[0102] The sheath tube 11 and the sheath tube connector 12 are separate structures. They can be connected and fixed relative to each other by interference fit, insertion, bonding, snap-fit ​​or other suitable methods.

[0103] Optionally, the sheath 11 is inserted into the sheath connector 12.

[0104] In this embodiment, the sheath assembly 10 is configured as a split structure, which helps to reduce assembly difficulty and improve assembly efficiency.

[0105] In some embodiments, refer to Figure 4 and Figure 7 The connecting device 30 includes an adhesive 36, and the sheath connector 32 is bonded to the inner wall of the housing 31 through the adhesive 36.

[0106] There can be one or more adhesive components 36. Optionally, there can be multiple adhesive components 36, which can bond the distal and proximal ends of the sheath connector 12 to the inner wall of the housing 31 at different locations to improve the installation stability of the sheath connector 12.

[0107] The adhesive 36 can be a solid adhesive or a liquid adhesive that has cured. Optionally, the adhesive 36 can be a UV adhesive, epoxy resin adhesive, or other suitable adhesive.

[0108] After the installation position of the sheath connector 12 within the housing 31 is determined, the sheath connector 12 and the housing 31 can be bonded together by the adhesive 36, thereby fixing the sheath connector 12 within the housing 31. This reduces the risk of the sheath connector 12 causing axial movement of the distal end of the sheath 11 and the second segment 42 relative to the housing 31, thereby reducing the risk of the second segment 42 being stretched or bent by compression, and improving the stability and accuracy of the signal transmission of the cable 40.

[0109] In some embodiments, refer to Figures 1 to 5 ,as well as Figure 7 The housing 31 includes a housing body 313 and a sheath protective shell 314, with the sheath protective shell 314 connected to the distal end of the housing body 313. A sheath connector 12 is movably inserted into the sheath protective shell 314 along the axial direction X of the housing 31. The sheath connector 12 has a second axial limiting portion 121, which protrudes from the first inner circumferential surface 314a of the sheath protective shell 314. The housing 31 includes a first limiting wall 312, which protrudes from the inner wall of the housing body 313. Along the axial direction X of the housing 31, the second axial limiting portion 121 is located between the proximal end face 314b of the sheath protective shell 314 and the first limiting wall 312. Along the axial direction X of the housing 31, the dimension of the second axial limiting portion 121 is d1, and the distance between the proximal end face of the sheath protective shell 314 and the first limiting wall 312 is d2, where d1 < d2.

[0110] The shell body 313 has an internal receiving space in which a portion of the sheath connector 12 (including at least the second axial limiting portion 121) and the connector assembly 33 are received. A fixing hole 311 is provided in the shell body 313. A first radial limiting portion 35 can be connected to the shell body 313 and protrudes from the inner wall of the shell body 313.

[0111] The housing body 313 may include a first housing 3131 and a second housing 3132 connected together, which together define an accommodating space. The first housing 3131 and the second housing 3132 may be connected by snap-fit, screw connection or other suitable means to facilitate the installation and adjustment of the position of the connector assembly 33 and the position of the second axial limiting part 321 within the housing body 313. A fixing hole 311 may be provided in one of the first housing 3131 and the second housing 3132.

[0112] The sheath protective shell 314 can be connected to the shell body 313 by interference fit, insertion, snap-fit ​​or other suitable means, and fixed relative to the shell body 313. Optionally, the proximal end of the sheath protective shell 314 can be inserted into the shell body 313 to increase the mating length between the sheath protective shell 314 and the shell body 313 and improve the connection stability between the two.

[0113] The sheath connector 12 is inserted into the sheath protective housing 314 and is movable relative to the sheath protective housing 314 along the axial direction X. The portion of the sheath 50 extending beyond the distal end of the sheath connector 12 can pass through the sheath protective housing 314 and protrude from the distal end of the sheath protective housing 314. The sheath protective housing 314 provides protection for the sheath 50 and guides the movement of the sheath connector 32 along the axial direction X.

[0114] The sheath protective shell 314 and the shell body 313 are separately configured, and the sheath protective shell 314 and the shell body 313 can be made of different materials. For example, the shell body 313 can be made of a harder material to improve its structural strength and reduce the risk of displacement or deformation of components located within the shell body 313. The sheath protective shell 314 can be made of a softer material to reduce the stress exerted by the sheath protective shell 314 on the sheath 50, thereby improving the protective effect on the sheath 50.

[0115] The inner wall 31a of the housing 31 may include the inner wall of the housing body 313 and the inner wall of the sheath protective shell 314, and the adhesive 36 may be adhered to at least one of the inner wall of the housing body 313 and the inner wall of the sheath protective shell 314.

[0116] The first limiting wall 312 may extend in a direction perpendicular to the axial direction X, and the first limiting wall 312 may be provided with a connecting portion for the second segment 42 to pass through.

[0117] There can be one or two first limiting walls 312. Optionally, a first limiting wall 312 is provided at the corresponding position of the first shell 3131 and the second shell 3132, and the two first limiting walls 312 are arranged opposite to each other to increase the contact area with the second axial limiting part 121 and improve the limiting effect.

[0118] The sheath connector 12 may include a sheath connector body 122, which is inserted into the sheath protective shell 314, and a second axial limiting portion 121 protruding from the outer peripheral surface of the sheath connector body 122. In some examples, the second axial limiting portion 121 may be an annular structure surrounding the sheath connector body 122. In other examples, the second axial limiting portion 121 may also be an arc-shaped or block-shaped structure provided along the outer periphery of the sheath connector body 122.

[0119] Since d1 < d2, the second axial limiting part 121 can move axially X between the proximal end face 314b of the sheath protective shell 314 and the first limiting wall 312. When the second axial limiting part 121 moves to its farthest point in the distal direction, it can abut against the proximal end face 314b of the sheath protective shell 314, and when the second axial limiting part 121 moves to its farthest point in the distal direction, it can abut against the first limiting wall 312.

[0120] The proximal end face 314b of the sheath protective shell 314 and the first limiting wall 312 can limit the movement range of the second axial limiting part 121 in the axial direction X. While meeting the requirement of flexibly adjusting the installation position of the sheath connector 12 according to the actual length of the cable 40, the risk of the sheath connector 12 detaching from the sheath protective shell 314 can be reduced, and the operation experience of adjusting the installation position of the sheath connector 32 can be improved.

[0121] In some embodiments, refer to Figure 10 The sheath connector 12 includes a first circumferential limiting protrusion 123, which is connected to the second axial limiting portion 121 and protrudes from the outer circumferential surface of the second axial limiting portion 121. The proximal end of the sheath protective shell 314 may be provided with a first limiting recess 3141, and the first circumferential limiting protrusion 123 may be at least partially accommodated in the first limiting recess 3141, so as to restrict the circumferential rotation of the sheath connector 1212 relative to the shell 31 through the cooperation of the first limiting recess 3141 and the first circumferential limiting protrusion 123.

[0122] Optionally, there can be multiple first circumferential limiting protrusions 123 and first limiting recesses 3141. Multiple first circumferential limiting protrusions 123 are arranged at circumferential intervals along the sheath connecting body 122 and are provided one-to-one in the corresponding first limiting recesses 3141.

[0123] In some embodiments, refer to Figures 2 to 5 ,as well as Figure 9 The connecting device 30 includes a second radial limiting part 37, which protrudes from the inner wall of the housing 31 and extends along the axial direction X of the housing 31. The second radial limiting part 37 has a second limiting surface 371 away from the inner wall of the housing 31, and the sheath assembly 10 abuts against the second limiting surface 371.

[0124] Optionally, the sheath connector 12 abuts against the second limiting surface 371.

[0125] The sheath connector 12 can abut against the second limiting surface 371 in the radial direction of the housing 31. As mentioned above, the radial direction of the housing 31 refers to the radial direction of the cylinder with the central axis of the housing 31 as its central axis.

[0126] The second radial limiting portion 37 extends along the axial direction X, making it less likely for the sheath assembly 10 to interfere with the second radial limiting portion 37 during axial movement. The sheath assembly 10 can move axially along the second radial limiting portion 37, that is, the sheath assembly 10 can move along the extension direction of the second limiting surface 371, and the second radial limiting portion 37 can also provide a certain guiding effect on the axial movement of the sheath assembly 10.

[0127] Optionally, there can be multiple second radial limiting parts 37, which are distributed circumferentially along the housing 31 to abut against different surfaces of the sheath connector 12 at multiple different positions, thereby better radially limiting the sheath connector 12 and improving the radial limiting effect of the sheath connector 12.

[0128] The second radial limiting part 37 can be connected to the shell body 313 and protrude from the inner wall of the shell body 313.

[0129] In the axial direction X of the housing 31, the second radial limiting part 37 may be located between the proximal end face 314b of the sheath protective shell 314 and the first limiting wall 312.

[0130] The second radial limiting part 37 can restrict the sheath assembly 10 radially along the housing 31, which can reduce the shaking of the sheath assembly 10, improve the installation stability of the sheath assembly 10, and facilitate the second segment 42 to extend more straight, thereby improving the connection stability of the first segment 41 and the second segment 42.

[0131] In some embodiments, refer to Figures 1 to 5 ,as well as Figure 8 and Figure 11 The sleeve assembly 20 includes a sleeve 21 and a sleeve connector 22. The sleeve connector 22 is installed inside the housing 31, and the sleeve 21 is connected to the sleeve connector 22. The housing 31 is provided with a limiting groove 315, and the sleeve connector 22 has a third axial limiting part 221, which is at least partially accommodated in the limiting groove 315.

[0132] The sleeve connector 22 may include a sleeve connector body 222, with a first segment 41 passing through the sleeve connector body 222. A third axial limiting portion 221 protrudes from the outer peripheral surface of the sleeve connector body 222. In some examples, the third axial limiting portion 221 may be an annular structure surrounding the sleeve connector body 222. In other examples, the third axial limiting portion 221 may also be an arc-shaped or block-shaped structure provided along the outer periphery of the sleeve connector body 222.

[0133] In some examples, the width of the limiting groove 315 along the axial direction X is approximately equal to the dimension of the third axial limiting portion 221 along the axial direction X, and the third axial limiting portion 221 can be precisely accommodated within the limiting groove 315, abutting against the side wall of the limiting groove 315 along the axial direction X. In these examples, the sleeve connector 22 can be fixedly installed within the housing 31.

[0134] In other examples, the width of the limiting groove 315 along the axial direction X may also be greater than the dimension of the third axial limiting portion 221 along the axial direction X. In these examples, the sleeve connector 22 can be movably installed within the housing 31 along the axial direction X of the housing 31. When the sleeve connector 22 moves to its farthest distance towards the proximal end, the third axial limiting portion 221 can abut against the proximal sidewall of the limiting groove 315; when the sleeve connector 22 moves to its farthest distance towards the distal end, the third axial limiting portion 221 can abut against the distal sidewall of the limiting groove 315. After the installation position of the sleeve connector 22 within the housing 31 is determined, the sleeve connector 22 can be fixed to the housing 31 by a retaining pin, adhesive, or other suitable means.

[0135] The sleeve assembly 20 can be connected to the sleeve connector 22 by interference fit, plug-in or other suitable means, and fixed relative to the sleeve assembly 20.

[0136] The limiting groove 315 can restrict the position and / or movement range of the third axial limiting part 221 in the axial direction X, reducing the risk of the sleeve connector 22 detaching from the housing 31 and improving the installation stability of the first section 41. Furthermore, when the width of the limiting groove 315 is large, it can also expand the adjustable range of the installation position of the connector assembly 33, thereby adapting it to first sections 41 of various sizes.

[0137] In some embodiments, refer to Figures 1 to 5 ,as well as Figure 8 The housing 31 includes a housing body 313 and a sleeve protective shell 316, with the sleeve protective shell 316 connected to the proximal end of the housing body 313. The sleeve protective shell 316 has a fourth axial limiting portion 3161, which is at least partially disposed in a limiting groove 315 and abuts against the proximal sidewall 315a of the limiting groove 315. A sleeve connector 22 is inserted into the sleeve protective shell 316, and a third axial limiting portion 221 protrudes from the inner circumferential surface 316a of the sleeve protective shell 316 and is located between the distal end face 316b of the sleeve protective shell 316 and the distal sidewall 315b of the limiting groove 315. Along the axial direction X of the housing 31, the dimension of the third axial limiting portion is d3, and the distance between the distal end face 316b of the sleeve protective shell 316 and the distal sidewall 315b of the limiting groove 315 is d4, where d3 ≤ d4.

[0138] The sleeve protective shell 316 can be connected to the shell body 313 by interference fit, plug-in, snap-fit ​​or other suitable means, and fixed relative to the shell body 313. Optionally, the distal end of the sleeve protective shell 316 can be inserted into the shell body 313 to increase the mating length between the sleeve protective shell 316 and the shell body 313 and improve the connection stability between the two.

[0139] The sleeve connector 22 is inserted into the sleeve protective housing 316 and is movable relative to the sleeve protective housing 316 along the axial direction X. The portion of the sleeve assembly 20 extending proximal to the sleeve connector 22 can pass through the sleeve protective housing 316 and protrude from the proximal end of the sleeve protective housing 316. The sleeve protective housing 316 provides protection for the sleeve assembly 20 and provides a mounting base for the sleeve connector 22.

[0140] The protective housing 316 and the housing body 313 are separately provided, and the protective housing 316 and the housing body 313 can be made of different materials. For example, the protective housing 316 can be made of soft material, which can reduce the stress generated by the protective housing 316 on the housing assembly 20 and the cable 40, and improve the protection effect on the cable 40.

[0141] In some examples, along the axial direction X, d3 = d4, and the third axial limiting portion 221 can be located between the distal end face 316b of the sleeve protective shell 316 and the distal sidewall 315b of the limiting groove 315, with the sleeve connector 22 fixedly installed inside the shell 31. In other examples, d3 < d4, and the sleeve connector 22 can be movably installed inside the shell 31 along the axial direction X. When the sleeve connector 22 moves to its farthest distance toward the proximal end, the third axial limiting portion 221 can abut against the distal end face 316b of the sleeve protective shell 316; when the sleeve connector 22 moves to its farthest distance toward the distal end, the third axial limiting portion 221 can abut against the distal sidewall 315b of the limiting groove 315.

[0142] In this embodiment, the cooperation of the fourth axial limiting part 3161 and the limiting groove 315 reduces the risk of the sleeve protective shell 316 detaching from the shell body 313, thereby improving the connection stability between the sleeve protective shell 316 and the shell body 313. The fourth axial limiting part 3161 and the limiting groove 315 also provide axial X-axis limiting for the sleeve connector 22, thereby reducing the axial movement of the sleeve connector 22 or its axial movable range, and further reducing the risk of the sleeve connector 22 falling off.

[0143] According to the second aspect of this application, referring to Figure 11 This application also provides a pump flow auxiliary device 2, which includes a pump flow conduit 3 and a cable connection structure 1 provided in any embodiment of the first aspect of this application. The distal end of the sheath assembly 10 and the distal end of the second segment 42 are both connected to the pump flow conduit 3.

[0144] In some embodiments, refer to Figures 1 to 5 The pump flow duct 3 includes a pump flow tube body, an impeller, a drive component 301, and a sensor 302. The sheath assembly 10 is fixedly connected to the drive component 301, and the sensor 302 is fixedly installed on the drive component 301 and connected to the distal end of the second segment 42.

[0145] The drive unit 301 is used to provide power for the operation of the blood pumping catheter. Exemplarily, the drive unit 301 can be used to drive the impeller of the blood pumping catheter to rotate, so as to realize the blood pumping function of the pumping tube. Optionally, the drive unit 301 can be an electric motor.

[0146] Sensor 302 is used to acquire data information about the surroundings of the actuator 301 and transmit it to an external device for the patient via cable 40. For example, sensor 302 can acquire data information that characterizes the position of the actuator 301 within the patient.

[0147] It is understood that the sensor 302 may also be located at other locations on the pump flow duct to obtain fluid parameters around other locations, and this application does not specifically limit this.

[0148] Sensor 302 can transmit information to the patient's external device by converting light signals and hydraulic signals into current changes. This allows operators to monitor the position and status of the drive unit 301 through the signals fed back by sensor 302, thereby making timely adjustments to the blood pumping catheter and facilitating the smooth progress of the interventional and operational procedures.

[0149] Alternatively, sensor 302 may be a fiber optic pressure sensor, a differential pressure sensor, or other suitable sensor.

[0150] The sheath assembly 10 is fixedly connected to the drive member 301, and the distal end of the second segment 42 is connected to the sensor 302. The sensor 302 is fixedly installed on the drive member 301. Therefore, when the sheath assembly 10 moves axially, it can drive the drive member 301 and the distal end of the second segment 42 to move synchronously, thereby adjusting the position of the distal end of the second segment 42, which is beneficial for the second segment 42 to be in a natural elongation state.

[0151] In this embodiment, a sensor 302 is installed on the drive component 301, and a cable 40 is connected to the sensor 302. The position of the drive component 301 can be monitored by the sensor 302, and the signal can be fed back to the patient's external device through the cable 40. As the operator adjusts the relative position of the drive component 301 in a timely manner, the intervention accuracy is improved.

[0152] In some embodiments, the pumping conduit 3 is a blood pumping conduit or a thrombus aspiration conduit.

[0153] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cable connection structure, characterized in that, include: A connecting device, including a housing and a connector assembly installed within the housing; A sheath assembly is mounted at the distal end of the housing; A sleeve assembly is installed at the proximal end of the housing; as well as The cable includes a first segment and a second segment, the distal end of the first segment passing through the sheath assembly and extending into the housing, the proximal end of the second segment passing through the sheath assembly and extending into the housing, and the proximal end of the second segment being connected to the distal end of the first segment via the connector assembly. The mounting position of at least two of the connector assembly, the sheath assembly, and the sleeve assembly relative to the housing is adjustable along the axial direction of the housing.

2. The cable connection structure according to claim 1, characterized in that, The mounting positions of the connector assembly and the sheath assembly relative to the housing are adjustable along the axial direction of the housing.

3. The cable connection structure according to claim 1 or 2, characterized in that, The connector assembly includes a connector base and a first plug, the first plug being inserted into the connector base, one of the distal end of the first segment and the proximal end of the second segment being connected to the first plug, and the other being directly or indirectly connected to the connector base. The connector seat is mounted on the housing, and the mounting position of the connector seat relative to the housing is adjustable along the axial direction of the housing.

4. The cable connection structure according to claim 3, characterized in that, The connector seat includes a first limiting part, the housing is provided with a plurality of fixing holes spaced apart along the axial direction of the housing, and the connecting device includes at least one fixing pin, which passes through the fixing holes and engages with the first limiting part to restrict the relative movement between the first limiting part and the housing.

5. The cable connection structure according to claim 3, characterized in that, The connecting device includes a first radial limiting portion, which protrudes from the inner wall of the housing and extends axially along the housing. The first radial limiting portion has a first limiting surface away from the inner wall of the housing, and the connector seat abuts against the first limiting surface; and / or The connecting device includes a second radial limiting portion that protrudes from the inner wall of the housing and extends axially along the housing. The second radial limiting portion has a second limiting surface away from the inner wall of the housing, and the sheath assembly abuts against the second limiting surface.

6. The cable connection structure according to claim 3, characterized in that, The connector assembly includes a first elastic element disposed inside the first plug. The first elastic element is capable of applying an axial force toward the second segment to the first segment connected to the first plug, or the first elastic element is capable of applying an axial force toward the first segment to the second segment connected to the first plug.

7. The cable connection structure according to claim 2, characterized in that, The sheath assembly includes a sheath and a sheath connector, the sheath connector being installed within the housing, the sheath being fixedly connected to the sheath connector, at least a portion of the sheath extending beyond the distal end of the housing, and a portion of the second section passing through the sheath.

8. The cable connection structure according to claim 7, characterized in that, The connecting device includes an adhesive component, through which the sheath connector is bonded to the inner wall of the housing.

9. The cable connection structure according to claim 7, characterized in that, The shell includes a shell body and a sheath protective shell, the sheath protective shell being connected to the distal end of the shell body; The sheath connector is inserted into the sheath protective shell, and the sheath connector has a second axial limiting part that protrudes from the inner circumferential surface of the sheath protective shell. The housing includes a first limiting wall that protrudes from the inner wall of the housing body. In the axial direction of the housing, a second axial limiting portion is located between the proximal end face of the sheath protective shell and the first limiting wall. Along the axial direction of the housing, the dimension of the second axial limiting portion is d1, and the distance between the proximal end face of the sheath protective shell and the first limiting wall is d2, where d1 < d2.

10. The cable connection structure according to claim 1, characterized in that, The sleeve assembly includes a sleeve and a sleeve connector, the sleeve connector being installed inside the housing, and the sleeve being connected to the sleeve connector; The housing is provided with a limiting groove, and the sleeve connector has a third axial limiting part, which is at least partially accommodated in the limiting groove.

11. The cable connection structure according to claim 10, characterized in that, The housing includes a housing body and a sleeve protective shell. The sleeve protective shell is connected to the proximal end of the housing body. The sleeve protective shell has a fourth axial limiting part, which is at least partially disposed in the limiting groove and abuts against the proximal sidewall of the limiting groove. The sleeve connector is inserted into the sleeve protective shell. The third axial limiting part protrudes from the inner circumferential surface of the sleeve protective shell and is located between the distal end face of the sleeve protective shell and the distal sidewall of the limiting groove. Along the axial direction of the shell, the dimension of the third axial limiting part is d3, and the distance between the distal end face of the sleeve protective shell and the distal sidewall of the limiting groove is d4, where d3≤d4.

12. A pump flow auxiliary device, characterized in that, include: Pump flow duct; as well as According to any one of claims 1-11, the distal end of the sheath assembly and the distal end of the second segment are both connected to the pump flow conduit.

13. The pump auxiliary device according to claim 12, characterized in that, The pumping conduit is a blood pumping conduit or a thrombus aspiration conduit.

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