Connector for medical instrument conveyor, handle assembly and conveyor

Abstract

The connector comprises a connector body, a first channel, a second channel and a third channel which are communicated with one another are arranged in the connector body, the two ends of the first channel are of opening structures, and the second channel and the third channel are located on the side face of the first channel; the first channel is used for a sheath core assembly of the conveyor to pass through, the second channel is used for a release piece of the conveyor to pass through, and the third channel is used for injecting liquid to the far end of the conveyor; a first connecting part is arranged at the far end of the connector body and used for being connected with the near end of a handle body of the conveyor. The first channel, the second channel and the third channel are integrated into one connector, so that mutual interference among various operations can be avoided, convenience of mutual cooperation of multiple persons in front and back standing positions during simultaneous operation is facilitated, and space utilization in an operating room is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to a joint for a medical instrument delivery device, a handle assembly and the delivery device. BACKGROUND

[0002] Interventional therapy is a new technology applied in clinical in recent years, which is to pre-install an interventional medical instrument into a delivery device, then introduce the delivery device into a human body, and under the monitoring of a perspective device, release the medical instrument to a lesion site to achieve a treatment purpose, for example, in the treatment of cardiovascular diseases, a stent is delivered to a lesion site through a delivery device, and then the stent is released to expand and support the blood vessel wall.

[0003] In the delivery device, a guide wire needs to be used to guide the movement of the delivery device, so the guide wire needs to be inserted into the delivery device, and the guide wire is generally inserted into the sheath core of the delivery device from the proximal end of the delivery device and is pulled out from the distal end. Since the constraint and release of the interventional medical instrument are also involved, a release member is also arranged in the delivery device, which is fixed during the delivery process of the interventional medical instrument, and when the lesion site is reached, the release member needs to be operated at the proximal end of the delivery device to move to release the interventional medical instrument located at the distal end of the delivery device.

[0004] Therefore, a plurality of operations need to be performed on the handle of the delivery device, including but not limited to sheath tube retreat, guide wire guiding, sheath core retreat, release member retreat, etc. During the operation, different operation areas are crossed and interfered, which makes it difficult to operate simultaneously, and the operator needs to change the operation position many times during the operation process, and the whole operation process is relatively inconvenient. SUMMARY

[0005] The main purpose of the present application is to provide a joint for an interventional medical instrument delivery device, a handle assembly and the delivery device, so as to solve the problem that in the related art, different operation areas of the delivery device are crossed and interfered, which makes it difficult to operate simultaneously, and the operator needs to change the operation position many times during the operation process, and the whole operation process is relatively inconvenient.

[0006] In order to achieve the above-mentioned purpose, the present application provides a joint for a medical instrument delivery device, comprising a joint main body, a first channel, a second channel and a third channel are arranged in the joint main body and are communicated with each other, both ends of the first channel are open structures, the second channel and the third channel are located on the side surface of the first channel; The first channel is used for the sheath core subassembly of the delivery device to pass through, the second channel is used for the release member of the delivery device to pass through, and the third channel is used for liquid injection to the distal end of the delivery device. A first connecting portion is arranged at the distal end of the joint main body, and the first connecting portion is used for connecting the proximal end of the handle main body of the delivery device.

[0007] Further, the second channel is provided in two or more, and different second channels are used to pass different release members.

[0008] Further, the two or more second channels are distributed along the circumference of the joint body.

[0009] Further, the axis of the first channel is coaxial with the axis of the sheath core subassembly, and in the moving direction of the release member, the axis of the second channel forms an obtuse angle with the axis of the first channel, so that the bending angle of the release member when entering the first channel through the second channel is an obtuse angle.

[0010] Further, the first connecting part includes a connecting groove, which is used to assemble with a connecting plate at the proximal end of the handle body, so as to fix the joint body at the proximal end of the handle body; or, The first connecting part includes a connecting plate, which is used to assemble with a connecting groove at the proximal end of the handle body, so as to fix the joint body at the proximal end of the handle body.

[0011] Further, the first channel includes a distal segment channel, a middle segment channel and a proximal segment channel; wherein, The diameter of the distal segment channel is larger than that of the middle segment channel, and the distal segment channel is used to pass a rigid sleeve outside the sheath core subassembly in the delivery device, and the inner end face of the distal segment channel is used to abut against the end face of the rigid sleeve; The middle segment channel and the proximal segment channel are used for the part of the sheath core subassembly extending out of the rigid sleeve to pass through, the inlet of the second channel is located in the middle segment channel and close to the distal segment channel, and the inlet of the third channel is located in the middle segment channel and close to the proximal segment channel.

[0012] Further, it further includes a guide wire joint, the diameter of the proximal segment channel is larger than that of the middle segment channel, the guide wire joint is connected to the proximal segment channel, and the guide wire joint is used to pass a guide wire into the sheath core of the sheath core subassembly.

[0013] Further, it further includes a first sealing member, which is arranged in the proximal segment channel and abuts against the end face of the guide wire joint, and the first sealing member is used to seal the sheath core of the sheath core subassembly.

[0014] Further, a second connecting part is arranged on the guide wire joint, and the second connecting part is used for fixed connection with the proximal end of the handle body.

[0015] Further, it further includes a release member connecting joint, which is detachably fixed on the joint body through a quick release structure and corresponds to the second channel, and the release member connecting joint is used to fix the release member extending out of the distal end of the second channel.

[0016] Further, the release member is detachably connected with the joint body through a quick release structure.

[0017] According to another aspect of the present application, there is provided a handle assembly for a medical instrument, comprising the joint and the handle body as described above; wherein, The proximal end of the handle body is provided with a third connecting part and a fourth connecting part, the third connecting part is connected with the first connecting part to fix the joint body; When the joint further comprises a guide wire joint, the fourth connecting part cooperates with a second connecting part on the guide wire joint to fix the guide wire joint.

[0018] Further, the handle body further comprises a first housing and a second housing, the first housing and the second housing are fixed relative to each other, the third connecting part is arranged inside the first housing and the second housing, and the distal end of the joint body is located between the first housing and the second housing and is fixed by cooperation of the third connecting part and the first connecting part.

[0019] Further, the second connecting part comprises a first buckle fixed on the guide wire joint, and the fourth connecting part comprises a second buckle, the first buckle is arranged to be capable of being inserted between the first housing and the second housing and fixedly connected with the second buckle.

[0020] According to another aspect of the present application, there is provided a handle assembly for a medical instrument, comprising the joint and the handle body as described above; wherein, The proximal end of the handle body is provided with a third connecting part and a fourth connecting part, the third connecting part is connected with the first connecting part to fix the joint body; When the joint further comprises a guide wire joint, the fourth connecting part cooperates with a second connecting part on the guide wire joint to fix the guide wire joint.

[0021] Further, the handle body further comprises a first housing and a second housing, the first housing and the second housing are fixed relative to each other, the third connecting part is arranged inside the first housing and the second housing, and the distal end of the joint body is located between the first housing and the second housing and is fixed by cooperation of the third connecting part and the first connecting part.

[0022] Further, the second connecting part comprises a first buckle fixed on the guide wire joint, and the fourth connecting part comprises a second buckle, the first buckle is arranged to be capable of being inserted between the first housing and the second housing and fixedly connected with the second buckle.

[0023] According to another aspect of the present application, there is provided a delivery device for a medical instrument, comprising the joint as described above, and: an outer sheath tube connector arranged in the handle main body; an outer sheath tube, a proximal end of which is movably inserted into the handle main body and fixedly connected with the outer sheath tube connector; a sheath core sub-assembly movably inserted into the outer sheath tube, a proximal end of which extends out of the outer sheath tube and the outer sheath tube connector and passes through the first channel; a rigid sleeve sleeved on the sheath core sub-assembly, a distal end of which is inserted into the outer sheath tube connector, the outer sheath tube connector being drivenly movable in the handle main body along an axial direction of the rigid sleeve, a proximal end of the rigid sleeve being fixed in the first channel, the rigid sleeve and the sheath core sub-assembly having a moving space therebetween, the second channel and the third channel being in communication with the moving space; a second seal fixedly arranged at a proximal end of the outer sheath tube connector and slidably sleeved on the rigid sleeve to seal a liquid flow channel between the sheath core sub-assembly and the outer sheath tube connector during movement of the outer sheath tube connector.

[0024] Further, the proximal end of the outer sheath tube connector is provided with a sealing groove and a sealing pressing block, the second seal is arranged in the sealing groove, and the sealing pressing block is slidably sleeved on the rigid sleeve and fixed in the sealing groove to press the second seal.

[0025] Further, a release member is attached to the sheath core sub-assembly and movable relative to the sheath core sub-assembly, a distal end of the release member extending between the sheath core sub-assembly and the outer sheath tube and used to constrain the medical instrument on the sheath core sub-assembly, a proximal end of the release member passing through the moving space and inserted into the second channel and extending out of a proximal end of the second channel, the medical instrument at the distal end being released by operating the proximal end of the release member.

[0026] In the embodiment of the present application, a joint is provided, which comprises a joint body, a first channel, a second channel and a third channel are arranged in the joint body and communicate with each other, both ends of the first channel are open structures, the second channel and the third channel are located on the side of the first channel; the first channel is used for conveying the sheath core subassembly of a delivery device, the second channel is used for conveying the release member of the delivery device, and the third channel is used for injecting liquid into the distal end of the delivery device; a first connecting part is arranged at the distal end of the joint body, and the first connecting part is used for connecting the proximal end of the handle body of the delivery device. On the one hand, by integrating the first channel, the second channel and the third channel into one joint body, and mounting the joint body at the proximal end of the handle body, the operation area on the handle body for controlling the rearward movement of the outer sheath, the operation area for controlling the release member to release the medical device, the operation area for guiding the guide wire, and the area for injecting liquid into the distal end of the delivery cavity are separated, thereby avoiding mutual interference, facilitating the cooperation of multiple people when operating from front and rear positions, and utilizing the space in the operating room; On the other hand, when the first channel, the second channel and the third channel are integrated into one joint body, the operation position of the release member, the operation position of the guide wire and the injection position are close to each other, so that the operator does not need to change the operation position greatly during the operation process, and the operation difficulty can be further reduced. Moreover, after integrating the two channels into one joint body, only one mounting position needs to be arranged on the handle for mounting the joint body, so that the number of mounting positions arranged on the handle can be reduced, thereby reducing the production cost of the handle part, facilitating the mounting and dismounting, and finally solving the problems in the related art that the different operation areas of the delivery device interfere with each other, it is difficult to operate simultaneously, and the operator needs to change the operation position multiple times during the operation process, and the whole operation process is relatively inconvenient. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and make the purpose, features and advantages of the present application more apparent. The schematic embodiment drawings of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings: Figure 1 is a schematic view of the assembly structure of the joint and the handle according to the embodiment of the present application; Figure 2 is a schematic view of the assembly explosion structure of the joint and the handle according to the embodiment of the present application; Figure 3 is a schematic view of the local structure of the delivery device assembly according to the embodiment of the present application; Figure 4 is a schematic view of the structure in which two second channels are arranged on the joint body according to the embodiment of the present application; Figure 5 isFigure 4 Structure diagram of the joint body in the handle body assembling structure; 1, handle body; 100, first shell; 101, second shell; 102, third connecting part; 103, fourth connecting part; 2, retraction driving mechanism; 3, sheath core subassembly; 30, middle layer tube; 31, sheath core; 4, joint body; 41, first channel; 410, distal channel; 411, middle channel; 412, proximal channel; 42, second channel; 43, third channel; 44, first connecting part; 5, release piece connecting joint; 6, release piece; 7, guide wire joint; 70, second connecting part; 8, first sealing piece; 9, second sealing piece; 10, sealing groove; 11, sealing pressing block; 13, sliding block; 14, outer sheath connecting piece; 200, outer sheath; 23, rigid sleeve. DETAILED DESCRIPTION

[0028] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without making creative efforts should belong to the protection scope of the present application.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so as to describe the embodiments of the present application described herein.

[0030] In the present application, the terms "upper", "lower", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Moreover, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For the person skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0032] In addition, the terms "set", "provided with", "connected", "fixed" and the like should be interpreted broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection via an intermediate medium, or internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood according to the specific circumstances by those skilled in the art.

[0033] In addition, the term "a plurality of" should mean two and more than two.

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] To solve the related technical problems, as shown in Figures 1 to 3 The embodiment of the present application provides a joint for a medical instrument delivery device, which is suitable for being mounted at the proximal end of a handle main body 1 of an interventional medical instrument delivery device, and the joint comprises: A joint main body 4 is provided with a first channel 41, a second channel 42 and a third channel 43 which are in communication with each other, both ends of the first channel 41 are open structures, and the second channel 42 and the third channel 43 are located at the side of the first channel 41; The first channel 41 is used for the sheath core subassembly 3 of the delivery device to pass through, the second channel 42 is used for the release member 6 of the delivery device to pass through, and the third channel 43 is used for liquid injection to the distal end of the delivery device; The distal end of the joint main body 4 is provided with a first connecting portion 44, which is used for connecting with the proximal end of the handle main body 1 of the delivery device.

[0036] The medical instrument delivery device is used for delivering an interventional medical instrument to a lesion position in the human body and releasing the interventional medical instrument. Taking a stent as an example, the delivery device mainly comprises a handle main body 1, an outer sheath tube 200 connected to the handle main body 1, a sheath core subassembly 3 and the like, the sheath core subassembly 3 can comprise a sheath core 31 and a middle layer tube 30 sleeved and fixed outside the sheath core 31, the stent can be loaded in a loading space at the distal end of the outer sheath tube 200 and the sheath core 31, at this time the stent is in a compressed state and is constrained by the distal end of the release member 6. In the intervention process, the guide wire worn in the sheath core 31 guides the movement of the outer sheath tube 200 and the sheath core subassembly 3 as a whole, and the movement process can be carried out by operating the handle main body 1. After reaching the lesion position, the outer sheath tube 200 is operated on the handle main body 1 to retreat and expose the stent constrained on the sheath core 31, and then the release member 6 is operated to release the stent through the release member 6, so that the stent can be precisely placed at the target position.

[0037] In the embodiment, the joint is used to be mounted on the handle body 1 of the delivery device, to build the passage for the release member 6, and the passage for the sheath core subassembly 3, to facilitate the operation of the release member 6 and the passing of the guide wire into the sheath core 31 of the sheath core subassembly 3. Specifically, the joint is mounted on the proximal end of the handle body 1 of the delivery device, and the first passage 41, the second passage 42 and the third passage 43 are arranged in the joint body 4 of the joint and are in communication with each other, the first passage 41 can be docked with the proximal end of the sheath core subassembly 3 and pass the sheath core subassembly 3, and there is a space between the sheath core subassembly 3 and the first passage 41 after the sheath core subassembly 3 passes through the first passage 41.

[0038] The second passage 42 is used for the release member 6 of the delivery device to pass through, specifically, the distal end of the release member 6 needs to extend to the distal end of the sheath core 31 in the sheath core subassembly 3 to constrain the stent sleeved on the sheath core 31, and the proximal end of the release member 6 is separated from the sheath core subassembly 3 and enters the second passage 42, and the proximal end of the release member 6 needs to be operated to move to release the stent at the distal end during the process of releasing the stent. When assembled, the distal end of the release member 6 passes through the second passage 42 into the space between the sheath core subassembly 3 and the first passage 41 and extends towards the distal end of the delivery device to the position where the stent is located.

[0039] The third passage 43 is also arranged in the joint body 4, the third passage 43 is in communication with the first passage 41, and the third passage 43 is used for injecting liquid to the distal end of the delivery device. After assembly, the third passage 43 is in communication with the space between the sheath core subassembly 3 and the wall of the first passage 41, and the space is communicated to the distal end of the delivery device, so that the liquid injected into the third passage 43 can pass through the space and flow to the distal end of the delivery device.

[0040] In the embodiment, the first passage 41 can be arranged in the axial direction of the joint body 4, so that the deformation is not easy to occur when the sheath core subassembly 3 passes through, and the second passage 42 and the third passage 43 are respectively located on the two sides of the first passage 41. In some embodiments, the joint body 4 includes two arms, and the second passage 42 and the third passage 43 are respectively located in one arm.

[0041] As shown in Figure 1 and Figure 3 In order to facilitate the connection of the joint body 4 and the proximal end of the handle body 1, a first connecting part 44 is arranged at the first end of the joint body 4 (i.e. the distal end of the joint) in the embodiment, and the first connecting part 44 can be matched with the proximal end of the handle body 1 to fix the joint body 4. In one embodiment, the first connecting part 44 can be inserted and matched with the proximal end of the handle body 1, and is fixed by buckling or the like. In another embodiment, the first connecting part 44 can be buckled and fixed on the proximal end of the handle body 1. The specific connection structure of the first connecting part 44 and the proximal end of the handle body 1 is not limited in the embodiment, and can be designed according to actual needs.

[0042] In one aspect, by integrating the first channel 41, the second channel 42 and the third channel 43 into one joint, and installing the joint at the proximal end of the handle body 1, the operation area for controlling the rearward movement of the outer sheath 200 on the handle body 1 is arranged separately from the operation area for controlling the release of the medical device by the release member 6, the operation area for guiding the guide wire, and the area for liquid injection, avoiding interference between the rearward movement of the outer sheath and other operations, and facilitating the cooperation of multiple people when operating from front and rear positions, and space utilization in the operating room. On the other hand, when the first channel 41, the second channel 42 and the third channel 43 are close to each other, the operation position of the release member 6, the operation position of the guide wire and the liquid injection position are also close to each other, so that the operator does not need to change the operation position during the operation, and the operation difficulty can be further reduced. Moreover, after integrating the three channels into one joint body 4, only one mounting position is needed on the handle body 1 for mounting the joint body 4, which can reduce the number of mounting positions on the handle body 1, thereby reducing the production cost of the handle body 1 part, facilitating installation and disassembly, and solving the problems of inconvenient operation of the delivery device in the related art, and high production cost and difficult installation of the handle body 1 part of the delivery device.

[0043] In some embodiments, the position where the second channel 42 communicates with the first channel 41 is close to the distal end of the first channel 41, so as to minimize the contact area of the release member 6 in the first channel 41 and reduce the friction. The position where the third channel 43 communicates with the first channel 41 is close to the proximal end of the first channel 41, so as to facilitate the discharge of internal air by means of liquid injection.

[0044] According to the needs, the release member 6 can be provided as two or more, so as to better constrain the stent at the distal end of the sheath core 31. In one embodiment, the release member 6 is provided as two, and the two release members 6 can be located on the first side and the second side of the sheath core 31 respectively, one of which has a longer length and can be connected with the distal end of the stent, and the other has a shorter length and can be connected with the proximal end of the stent, so as to stably constrain the stent on the sheath core 31. Accordingly, as shown in Figure 4 and Figure 5 two second channels 42 are needed to be arranged in the joint body 4, and the two second channels 42 are distributed along the circumference of the joint body 4, and the two second channels 42 respectively lead into one release member 6, so as to be able to operate different release members 6 in a certain order during the release process. Of course, the release member 6 can also be provided as more, and accordingly, more second channels 42 are needed to be arranged in the joint body 4, and the specific number thereof is not limited in the present embodiment.

[0045] In one embodiment, as shown in Figure 1 andFigure 3 As shown, the axis of the first channel 41 is coaxial with the axis of the proximal end portion of the sheath-core subassembly 3, and the axis of the second channel 42 is at an obtuse angle with the axis of the first channel 41 in the direction of movement of the release member 6. Specifically, taking the case of the delivery device being laid horizontally, the axis of the first channel 41 is in the horizontal direction, thereby facilitating the connection of the sheath-core subassembly 3 and the entry of the guide wire into the sheath-core subassembly 3 and the movement of the guide wire. The second channel 42 is located at the side of the first channel 41 and is arranged at an angle, and in the direction of movement of the release member 6, the second channel 42 is at an obtuse angle (i.e., the obtuse angle between the first channel 41 and the second channel 42 is at the distal end), thereby making the angle of bending of the release member 6 at the junction of the second channel 42 and the first channel 41 smaller, reducing the resistance to movement of the release member 6 and facilitating the movement of the release member 6 during release. In some embodiments, the angle can be 120° to 160°.

[0046] In one embodiment of the first connecting portion 44, the first connecting portion 44 comprises a connecting slot for fitting with a connecting plate at the proximal end of the handle body 1 to fix the joint body 4 at the proximal end of the handle body 1.

[0047] Specifically, the handle body 1 of the delivery device can comprise two parts, i.e., a first housing 100 and a second housing 101 that can be relatively buckled, and a connecting plate is arranged at the inner proximal end of the first housing 100 and the second housing 101, and the connecting plate is clamped into the connecting slot of the joint body 4 by buckling of the first housing 100 and the second housing 101, thereby fixing the joint body 4 at the proximal end of the handle body 1.

[0048] Of course, in another embodiment, the first connecting portion 44 comprises a connecting plate for fitting with a connecting slot at the proximal end of the handle body 1 to fix the joint body 4 at the proximal end of the handle body 1.

[0049] In one embodiment, the delivery device to which the joint is applicable comprises an outer sheath connecting member 14 arranged in the handle body 1, and the outer sheath connecting member 14 is capable of connecting the outer sheath 200 and being driven to move rearward. The sheath-core subassembly 3 comprises a sheath core 31 and a middle layer tube 30, and the proximal end of the middle layer tube 30 is located in the outer sheath connecting member 14, and the proximal end of the sheath core 31 extends out of the middle layer tube 30, the outer sheath connecting member 14 and into the first channel 41 of the joint body 4. In order to construct a liquid flow channel and to support and guide the movement of the outer sheath connecting member 14, a rigid sleeve 23, such as a stainless steel sleeve, is sleeved on the sheath core 31 in this embodiment. The distal end of the rigid sleeve 23 extends into the outer sheath connecting member 14, and the proximal end extends into the first channel 41.

[0050] After the above arrangement, the outer sheath connector 14 can be moved rearward along the rigid sleeve 23, thus improving the stability and accuracy of the rearward movement of the outer sheath connector 14, and a channel can be formed between the rigid sleeve 23 and the sheath core 31, the distal end of the channel being in communication with the inner space of the outer sheath connector 14 and the space between the outer sheath 200 and the middle layer tube 30, and the proximal end of the channel being in communication with the space between the sheath core 31 and the first channel 41, i.e., the second channel 42 and the third channel 43. Therefore, the release member 6 inserted from the second channel 42 can extend distally through the channel in the rigid sleeve 23, and the liquid injected from the third channel 43 can also flow distally through the channel in the rigid sleeve 23.

[0051] For the convenience of assembling the rigid sleeve 23, as shown in Figure 3 , in the embodiment, the first channel 41 includes a distal section channel 410, a middle section channel 411 and a proximal section channel 412; the diameter of the distal section channel 410 is greater than that of the middle section channel 411, the distal section channel 410 is used for the rigid sleeve 23 to be sleeved outside the sheath core subassembly 3 in the delivery device, and the inner end face of the distal section channel 410 is used for abutting against the end face of the rigid sleeve 23; the middle section channel 411 and the proximal section channel 412 are used for the part of the sheath core subassembly 3 extending out of the rigid sleeve 23 to pass through, the inlet of the second channel 42 is located in the middle section channel 411 and close to the distal section channel 410, and the inlet of the third channel 43 is located in the middle section channel 411 and close to the proximal section channel 412.

[0052] Specifically, the diameter of the distal section channel 410 matches the diameter of the rigid sleeve 23, the diameter of the middle section channel 411 matches the diameter of the sheath core 31, the end face of the rigid sleeve 23 abuts against the end face of the distal section channel 410 during installation, and the sheath core 31 enters the middle section channel 411 and can extend into the proximal section channel. The relative positions of the joint body 4 and the rigid sleeve 23 can be positioned through the distal section channel 410, thus facilitating the release member 6 to be inserted into the rigid sleeve 23 through the second channel 42.

[0053] For the convenience of the access of the guide wire, an additional guide wire joint 7 needs to be configured, as shown in Figure 1 and Figure 3 , the guide wire joint 7 can be installed at the proximal end of the joint body 4 and correspond to the first channel 41. For the convenience of the connection of the guide wire joint 7 and the joint body 4, in the embodiment, the diameter of the proximal section channel 412 is greater than that of the middle section channel 411, and the proximal section channel 412 is used for connecting the guide wire joint 7. The diameter of the proximal section channel 412 matches the diameter of the distal end of the guide wire joint 7, and the distal end of the guide wire joint 7 can be in butt joint with the proximal section channel 412 in a plug-in manner. The sheath core 31 can be plugged into the guide wire joint 7 and fixed, so as to facilitate the guide wire to be inserted into the sheath core 31.

[0054] In an embodiment, as shown inFigure 3 As shown, the guide wire connector 7 is detachably connected to the connector body 4 and corresponds to the first channel 41, and the guide wire connector 7 is used for the guide wire to pass into the sheath core 31.

[0055] Specifically, the guide wire connector 7 in the embodiment can be connected to the proximal end of the first channel 41, and specifically can be connected into the proximal segment channel 412 of the first channel 41. The sheath core 31 in the sheath core subassembly 3 is butted into the guide wire connector 7, and the guide wire can pass into the guide wire connector 7 and enter the sheath core 31.

[0056] In an embodiment, the guide wire connector 7 is a luer connector, and the connector body 4 is a double luer connector.

[0057] After the third channel 43 is configured on the connector body 4 for liquid injection, it is necessary to avoid the liquid from flowing out of the proximal end of the connector body 4, and for this purpose, as shown, Figure 3 the connector in the embodiment further includes a first sealing member 8, which is arranged in the proximal segment channel 412 and abuts against the end face of the guide wire connector 7, and the first sealing member 8 is used for sealing the sheath core 31 of the sheath core subassembly 3.

[0058] Specifically, the first sealing member 8 can be a sealing ring, which is sleeved on the sheath core 31, and after the guide wire connector 7 is installed to the proximal end of the connector body 4, the first sealing member 8 is pressed against the end face of the proximal segment channel 412, so as to seal the proximal end of the first channel 41 through the first sealing member 8, and avoid the liquid injected through the third channel 43 from flowing out.

[0059] As shown, Figure 3 In order to facilitate the fixation of the guide wire connector 7, a second connecting part 70 is arranged on the guide wire connector 7 in the embodiment, and the second connecting part 70 is used for fixedly connecting with the proximal end of the handle body 1. In an embodiment, the second connecting part 70 can also adopt a connecting groove, and correspondingly, a connecting plate corresponding to the connecting groove is arranged on the handle body 1 of the delivery device, and when the two shells of the handle body 1 are buckled, the connecting plate is clamped into the connecting groove, thereby fixing the guide wire connector 7. In another embodiment, the second connecting part 70 can be inserted and matched with the proximal end of the handle body 1 for fixation, for example, the second connecting part 70 is arranged as a buckle, and a clamping groove is arranged at the proximal end of the handle body 1, and the buckle can be inserted into the clamping groove and fixed.

[0060] When the stent is released, the release member 6 needs to be pulled back, and this process needs to be operated on the connector body 4, and in order to facilitate the pulling of the release member 6, as shown, Figure 1 and Figure 3 the connector assembly in the embodiment further includes a release member connecting connector 5, which is detachably fixed on the connector body 4 and corresponds to the second channel 42, and the release member connecting connector 5 is used for fixing the release member 6 extending out of the distal end of the second channel 42.

[0061] Specifically, after the stent is loaded, the proximal end of the release member 6 can be fixed on the release member connecting joint 5 after passing through the second channel 42, and the release member connecting joint 5 can be fixed on the joint body 4, so as to fix the release member 6. When the stent needs to be released, the release member connecting joint 5 can be detached from the joint body 4, at which time the release member connecting joint 5 can be held by hand and pulled outward, so as to pull the release member 6 to release the stent.

[0062] In an embodiment, the release member connecting joint 5 and the joint body 4 are detachably connected through a quick release structure. Specifically, the release member connecting joint 5 and the joint body 4 can be connected through a threaded connection or a buckle connection, etc., so as to facilitate installation and disassembly, and thus facilitate loading and releasing of the stent. The release member 6 and the release member connecting joint 5 can be fixed through bolting or welding, etc., which is not limited in this embodiment.

[0063] According to another aspect of the present application, as shown in Figure 1 , a handle assembly for an interventional medical instrument is provided, which comprises the above-mentioned joint and a handle body 1; wherein, The proximal end of the handle body 1 is provided with a third connecting part 102 and a fourth connecting part 103, the third connecting part 102 is connected with the first connecting part 44 to fix the joint body 4, and the fourth connecting part 103 is connected with the second connecting part 70 to fix the guide wire joint 7.

[0064] In this embodiment, as above, as shown in Figure 2 , the first connecting part 44 and the second connecting part 70 can be provided as connecting grooves, and the third connecting part 102 and the fourth connecting part 103 can be provided as connecting plates. The second connecting part 70 can also be provided as a buckle, and the fourth connecting part 103 can also be provided as a clamping groove.

[0065] In an embodiment, the handle body 1 further comprises a first housing 100 and a second housing 101, the first housing 100 and the second housing 101 are fixed by relative buckling, the third connecting part 102 is located inside the first housing 100 and the second housing 101, and the distal end of the joint body 4 is located between the first housing 100 and the second housing 101 and is fixed by cooperation of the third connecting part 102 and the first connecting part 44. The third connecting part 102 can be a connecting plate located inside the first housing 100 and the second housing 101, and the first connecting part 44 can be a connecting groove provided at the distal end of the joint body 4. After the first housing 100 and the second housing 101 are buckled, the connecting plate is clamped into the connecting groove to fix the joint body 4.

[0066] In an embodiment, as shown in Figure 3As shown, the second connecting part 70 includes a first buckle fixed on the guide wire connector 7, and the fourth connecting part 103 includes a second buckle, and the first buckle can be inserted between the first shell 100 and the second shell 101 and fixedly connected with the second buckle.

[0067] Specifically, the first buckle can be arranged on the guide wire connector 7 near one end of the connector main body 4, and the second connecting part 70 can be arranged in two and symmetrically distributed. The first shell 100 and the second shell 101 are buckled at the proximal end to form an insertion port, and the first buckle can be inserted between the first shell 100 and the second shell 101 through the insertion port and buckled with the second buckle. The guide wire connector 7 has a blocking part, and after the first buckle and the second buckle are connected, the blocking part is closed on the end face of the insertion port.

[0068] In one embodiment, as Figure 1 shown, the handle assembly further comprises: a retraction driving mechanism 2 arranged in the handle main body 1, the retraction driving mechanism 2 comprising a driving end and an operating end, the operating end being capable of controlling the driving end to move in the handle main body 1; a sliding block 13 arranged in the handle main body 1, the sliding block 13 being connected with the driving end and driven by the driving end to move rearward relative to the handle main body 1; an outer sheath connecting piece 14 arranged in the handle main body 1 and movable along the axial direction of the handle main body 1, the outer sheath connecting piece 14 being used for fixedly connecting an outer sheath 200 penetrating into the handle main body 1, the outer sheath connecting piece 14 being connected with the sliding block 13, and the sliding block 13 pushing the outer sheath connecting piece 14 to move rearward during the rearward movement of the sliding block 13; The retraction driving mechanism 2, the sliding block 13 and the outer sheath connecting piece 14 are all arranged at the distal end of the handle main body 1.

[0069] Specifically, in the embodiment, the retraction driving assembly is responsible for being operated to drive the sliding block 13 to move rearward in the handle main body 1. The retraction driving assembly can adopt various structural forms, for example, comprising a gear and a rack, the rack being capable of sliding forward and backward in the handle main body 1, the sliding block 13 being mounted on the rack, the gear being engaged with the rack, and the rack being driven to slide forward and backward by rotating the gear, thereby driving the sliding block 13 to move linearly. Based on this, the specific structure of the retraction driving assembly is not limited in the embodiment, and can be designed according to actual needs.

[0070] According to another aspect of the present application, as Figure 1 and Figure 3 shown, a delivery device for a medical instrument is provided, comprising the above-mentioned handle assembly, and: an outer sheath connecting piece 14 arranged in the handle main body 1; an outer sheath 200, a proximal end of the outer sheath 200 being movably penetrated into the handle main body 1 and fixedly connected with the outer sheath connecting piece 14; The sheath core subassembly 3 is movably arranged in the outer sheath 200, and the proximal end of the sheath core subassembly 3 extends out of the outer sheath 200 and the outer sheath connector 14 and through the first channel 41; The rigid sleeve 23 is sleeved on the sheath core subassembly 3, and the distal end of the rigid sleeve 23 is arranged in the outer sheath connector 14, the outer sheath connector 14 is drivenly movable in the handle main body 1 along the axial direction of the rigid sleeve 23, the proximal end of the rigid sleeve 23 is fixed in the first channel 41, and the rigid sleeve 23 has a space with the sheath core subassembly 3, and the second channel 42 and the third channel 43 are communicated with the space; The second seal 9 is fixedly arranged at the proximal end of the outer sheath connector 14 and is sleeved on the rigid sleeve 23, so as to seal the liquid flow channel between the sheath core subassembly 3 and the outer sheath connector 14 during the movement of the outer sheath connector 14 and prevent blood from flowing out of the body.

[0071] In the embodiment, the outer sheath connector 14 is arranged in the handle main body 1 and can be connected with the outer sheath 200 and drivenly moved rearward. The sheath core subassembly 3 includes a sheath core 31 and a middle layer tube 30, the proximal end of the middle layer tube 30 is arranged in the outer sheath connector 14, and the proximal end of the sheath core 31 extends out of the middle layer tube 30, the outer sheath connector 14 and into the first channel 41 of the connector main body 4. In order to construct the liquid flow channel and support and guide the movement of the outer sheath connector 14, the rigid sleeve 23, for example, a stainless steel sleeve, is sleeved on the sheath core 31. The distal end of the rigid sleeve 23 extends into the outer sheath connector 14, and the proximal end extends into the first channel 41.

[0072] After being arranged in this way, the outer sheath connector 14 can move rearward along the rigid sleeve 23, so that the stability and accuracy of the rearward movement of the outer sheath connector 14 can be improved. Meanwhile, a channel can be constructed between the rigid sleeve 23 and the sheath core 31, the distal end of the channel can be communicated with the inner space of the outer sheath connector 14 and the space between the outer sheath 200 and the middle layer tube 30, and the proximal end of the channel can be communicated with the space between the sheath core 31 and the first channel 41, that is, the second channel 42 and the third channel 43. Therefore, the release member 6 passing through the second channel 42 can enter the outer sheath connector 14 through the channel in the rigid sleeve 23. The liquid injected from the third channel 43 can also flow into the outer sheath connector 14 through the channel in the rigid sleeve 23 and flow to the distal end through the space between the outer sheath 200 and the middle layer tube 30.

[0073] In order to prevent the liquid in the outer sheath connecting member 14 from leaking out, the second sealing member 9 is arranged on the proximal end of the outer sheath connecting member 14 and is sleeved on the rigid sleeve 23. The second sealing member 9 seals the gap between the proximal end of the outer sheath connecting member 14 and the rigid sleeve 23, thereby preventing the liquid in the outer sheath connecting member 14 from leaking out. At the same time, since the outer sheath connecting member 14 needs to move along the rigid sleeve 23, the second sealing member 9 needs to be sleeved on the rigid sleeve 23, so that the second sealing member 9 realizes the function of dynamic sealing in this embodiment.

[0074] In addition, based on the sealing concept, the rigid sleeve 23 in this embodiment can withstand greater extrusion pressure without deforming, which can improve the sealing performance without affecting the movement of the outer sheath connecting member 14.

[0075] In an embodiment, in order to facilitate sealing, as shown in Figure 3 the proximal end of the outer sheath connecting member 14 is provided with a sealing groove 10, the second sealing member 9 is arranged in the sealing groove 10, and a sealing pressing block 11 is arranged, which is sleeved on the sheath core subassembly 3 and is fixed in the sealing groove 10 to press the second sealing member 9. The sealing pressing block 11 and the sealing groove 10 can be interference fit, so as to press and fix the second sealing member 9.

[0076] In an embodiment, a release member 6 is further included, which is attached to the sheath core subassembly 3 and is movable relative to the sheath core subassembly 3. The distal end of the release member 6 extends between the sheath core subassembly 3 and the outer sheath 200 and is used to constrain the medical device on the sheath core subassembly 3. The proximal end of the release member 6 passes through the active space and enters the second channel 42, and extends out through the proximal end of the second channel 42. The medical device at the distal end is released by operating the proximal end of the release member 6.

[0077] Specifically, in this embodiment, the release member 6 can be an elongated rod or wire structure, and the sheath core subassembly 3 can include a sheath core 31 and a middle layer tube 30 sleeved and fixed outside the sheath core 31. The distal end of the release member 6 is connected to the medical device sleeved on the sheath core 31, such as a stent, so as to constrain the medical device at the distal end of the sheath core 31. The proximal end of the release member 6 extends into the second channel 42. The proximal end of the release member 6 needs to be fixed, so the proximal end of the release member 6 can be further extended out of the second channel 42 and fixedly connected with the release member 6 connecting joint 5. The release member 6 connecting joint 5 is separated from the joint body 4 when releasing, so as to pull the release member 6 to move, so that the distal end of the release member 6 is separated from the medical device, thereby realizing the accurate release of the medical device.

[0078] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A connector for a medical device conveyor, characterized in that: include: A connector body, wherein a first channel, a second channel, and a third channel are provided in the connector body, the first channel has openings at both ends, and the second channel and the third channel are located on the sides of the first channel; The first channel is used for the sheath core subassembly of the conveyor to pass through, the second channel is used for the release member of the conveyor to pass through, and the third channel is used for injecting liquid into the distal end of the conveyor; The distal end of the joint body is provided with a first connecting portion, and the first connecting portion is used to be connected to the proximal end of the handle body of the conveyor.

2. The connector according to claim 1, wherein There are two or more second channels, and different second channels are used to pass through different releasing members.

3. The joint according to claim 2, characterized in that Two or more second channels are distributed along the circumference of the joint body.

4. The connector according to claim 1, wherein The axis of the first channel is coaxial with the axis of the sheath core subassembly. In the moving direction of the release member, the axis of the second channel forms an obtuse angle with the axis of the first channel, so that the bending angle of the release member when entering the first channel through the second channel is an obtuse angle.

5. The connector according to claim 1, wherein The first connecting portion includes a connecting groove, and the connecting groove is used to assemble with the connecting plate at the proximal end of the handle body to fix the connector body to the proximal end of the handle body; or, The first connecting portion includes a connecting plate, and the connecting plate is used to be assembled with the connecting groove at the proximal end of the handle body to fix the joint body to the proximal end of the handle body.

6. The joint according to claim 4, characterized in that The first channel includes a distal channel, a middle channel and a proximal channel; wherein, The diameter of the distal channel is larger than that of the middle channel, and the distal channel is used to pass through a rigid sleeve sleeved on the outside of the sheath-core subassembly in the conveyor, and the inner end surface of the distal channel is used to abut against the end surface of the rigid sleeve; The middle section channel and the near section channel are used for the portion of the sheath core subassembly extending out of the rigid sleeve to pass through. The entrance of the second channel is located in the middle section channel and close to the far section channel. The entrance of the third channel is located in the middle section channel and close to the near section channel.

7. The connector according to claim 6, wherein: It also includes a guidewire connector. The diameter of the proximal channel is larger than the diameter of the middle channel. The guidewire connector is connected to the proximal channel and is used to pass the guidewire into the sheath core of the sheath core subassembly.

8. The joint according to claim 7, characterized in that It also includes a first sealing member, which is arranged in the proximal channel and abuts against the end face of the guidewire connector. The first sealing member is used for sealingly sleeved on the sheath core of the sheath core subassembly.

9. The joint according to claim 7, characterized in that The guidewire connector is provided with a second connecting portion, which is used to be fixedly connected to the proximal end of the handle body.

10. The joint according to claim 1, wherein It also includes a release member connecting joint, which is detachably fixed to the joint body through a quick-release structure and corresponds to the second channel. The release member connecting joint is used to fix the release member extending from the distal end of the second channel.

11. A handle assembly for a medical device, characterized in that: comprising a joint and a handle body as claimed in any one of claims 1 to 10; wherein, The proximal end of the handle body is provided with a third connecting portion and a fourth connecting portion, and the third connecting portion is connected to the first connecting portion to fix the connector body; When the connector further includes a guidewire connector, the fourth connecting portion cooperates with the second connecting portion on the guidewire connector to fix the guidewire connector.

12. The handle assembly according to claim 11, wherein: The handle body also includes a first shell and a second shell, the first shell and the second shell are relatively snap-fitted and fixed, the third connecting portion is arranged on the inner side of the first shell and the second shell, the distal end of the connector body is located between the first shell and the second shell, and is fixed to each other through the third connecting portion and the first connecting portion.

13. The handle assembly according to claim 12, wherein: The second connecting portion includes a first buckle fixed on the guide wire connector, and the fourth connecting portion includes a second buckle. The first buckle is configured to be inserted between the first shell and the second shell and fixedly connected to the second buckle.

14. A conveyor for medical devices, characterized in that: Comprising the joint according to any one of claims 1 to 10, and: An outer sheath connector is disposed in the handle body; an outer sheath tube, the proximal end of which is movably inserted into the handle body and fixedly connected to the outer sheath tube connector; a sheath-core subassembly movably disposed in the outer sheath tube, wherein a proximal end of the sheath-core subassembly extends out of the outer sheath tube and the outer sheath tube connector and passes through the first channel; a rigid sleeve, sleeved on the outside of the sheath-core subassembly, the distal end of the rigid sleeve being inserted into the outer sheath connector, the outer sheath connector being driven to move axially along the rigid sleeve within the handle body, the proximal end of the rigid sleeve being fixed in the first channel, a movable space being defined between the rigid sleeve and the sheath-core subassembly, and the second channel and the third channel being in communication with the movable space; The second sealing member is fixedly arranged at the proximal end of the outer sheath tube connector and is slidably sleeved on the rigid sleeve to seal the liquid flow channel between the sheath core subassembly and the outer sheath tube connector during the movement of the outer sheath tube connector.

15. The conveyor according to claim 14, characterized in that The proximal end of the outer sheath connector is provided with a sealing groove and a sealing pressing block, the second sealing member is provided in the sealing groove, the sealing pressing block is slidably sleeved on the rigid sleeve and fixed in the sealing groove to compress the second sealing member.

16. The conveyor according to claim 14, characterized in that It also includes a release member, which is attached to the outside of the sheath core subassembly and can move relative to the sheath core subassembly, the distal end of the release member extends between the sheath core subassembly and the outer sheath tube, and is used to constrain the medical device on the sheath core subassembly, the proximal end of the release member passes through the active space into the second channel, and extends out through the proximal end of the second channel.

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