Joint, handle assembly for medical instrument conveyor, and conveyor

Abstract

This invention discloses a connector, handle assembly, and conveyor for a medical device delivery system. The connector includes a connector body with three interconnected channels: a first channel, a second channel, and a third channel. The first channel has open ends, and the second and third channels are located on the sides of the first channel. The first channel allows the sheath core assembly of the conveyor to pass through, the second channel allows the release component of the conveyor to pass through, and the third channel is used for injecting liquid into the distal end of the conveyor. A first connecting portion is provided at the distal end of the connector body for connecting to the proximal end of the handle body of the conveyor. By integrating the first, second, and third channels into a single connector, this invention avoids interference between multiple operations, facilitates coordination between multiple operators in front-to-back positions, and improves space utilization in the operating room.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a connector, handle assembly, and conveyor for a medical device delivery system. Background Technology

[0002] Interventional therapy is a new technology that has been applied in clinical practice in recent years. It involves pre-loading an implantable medical device into a delivery system, then introducing it into the human body, and releasing the medical device to the lesion site under the monitoring of a fluoroscopic device to achieve the therapeutic purpose. For example, in the treatment of cardiovascular diseases, a stent is delivered to the lesion through a delivery system, and then the stent is released to expand and support the blood vessel wall.

[0003] This delivery system requires a guide wire to guide its movement. Therefore, the guide wire is inserted into the delivery system, typically entering the sheath from the proximal end and exiting from the distal end. Since the system also involves the restraint and release of the implantable medical device, a release mechanism is also installed within the delivery system. This release mechanism remains fixed during the delivery of the implantable medical device. Upon reaching the lesion location, the release mechanism needs to be operated at the proximal end of the delivery system to release the implantable medical device located at the distal end of the system.

[0004] As can be seen, multiple operations need to be performed on the handpiece of the delivery device, including but not limited to retracting the outer sheath, guiding the guidewire, retracting the sheath core, and retracting the release element. Different operating areas overlap and interfere with each other during the operation, making it difficult to perform simultaneous operations. Furthermore, the operator needs to change the operating position multiple times during the operation, making the entire process quite inconvenient. Summary of the Invention

[0005] The main objective of this invention is to provide a connector, handle assembly, and delivery device for implantable medical device delivery systems, in order to solve the problems in related technologies where different operating areas of the delivery device overlap and interfere with each other, making simultaneous operation difficult and requiring the operator to change the operating position multiple times during the operation, resulting in inconvenience throughout the entire process.

[0006] To achieve the above objectives, the present invention provides a connector for a medical device delivery device, comprising a connector body, wherein a first channel, a second channel, and a third channel are provided inside the connector body, the first channel having open ends, and the second channel and the third channel being located on the side of the first channel;

[0007] The first channel is for the sheath core assembly of the delivery device to pass through, the second channel is for the release element of the delivery device to pass through, and the third channel is for injecting liquid into the distal end of the delivery device;

[0008] The distal end of the connector body is provided with a first connecting part, which is used to connect to the proximal end of the handle body of the conveyor.

[0009] Furthermore, the second channel is configured as two or more, with different second channels used to pass through different release elements.

[0010] Furthermore, two or more of the second channels are distributed circumferentially along the connector body.

[0011] Furthermore, the axis of the first channel is coaxial with the axis of the sheath core assembly, and in the direction of movement of the release member, the axis of the second channel is at an obtuse angle to the axis of the first channel, so that the bending angle of the release member when it enters the first channel through the second channel is an obtuse angle.

[0012] Furthermore, the first connecting portion includes a connecting groove for assembling with a connecting plate near the proximal end of the handle body, thereby fixing the connector body to the proximal end of the handle body; or,

[0013] 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 to fix the connector body to the proximal end of the handle body.

[0014] Furthermore, the first channel includes a far-segment channel, a mid-segment channel, and a near-segment channel; among which,

[0015] The diameter of the distal channel is larger than that of the middle channel. The distal channel is used to pass through a rigid sleeve fitted outside the sheath core assembly in the conveyor. The inner end face of the distal channel is used to abut against the end face of the rigid sleeve.

[0016] The middle channel and the proximal channel are used for the portion of the sheath core assembly extending out of the rigid sleeve to pass through. The entrance of the second channel is located in the middle channel and close to the distal channel, and the entrance of the third channel is located in the middle channel and close to the proximal channel.

[0017] Furthermore, it also includes a guidewire connector, wherein 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 the guidewire connector is used to pass the guidewire into the sheath core of the sheath core assembly.

[0018] Furthermore, it also includes a first seal, which is disposed within the proximal channel and abuts against the end face of the guidewire connector. The first seal is used to seal the sheath core of the sheath core assembly.

[0019] Furthermore, the guide wire connector is provided with a second connecting part, which is used for fixed connection with the proximal end of the handle body.

[0020] Furthermore, it also includes a release element connection connector, which is detachably fixed to the connector body via a quick-release structure and corresponds to the second channel. The release element connection connector is used to fix the release element extending from the distal end of the second channel.

[0021] Furthermore, the release connector is detachably connected to the connector body via a quick-release structure.

[0022] According to another aspect of this application, a handle assembly for a medical device is provided, comprising the aforementioned connector and handle body; wherein,

[0023] The handle body has a third connecting part and a fourth connecting part at its proximal end. The third connecting part is connected to the first connecting part to fix the connector body.

[0024] When the connector also includes a guide wire connector, the fourth connecting part cooperates with the second connecting part on the guide wire connector to fix the guide wire connector.

[0025] Furthermore, the handle body also includes a first housing and a second housing, which are fastened together. The third connecting part is located inside the first housing and the second housing. The distal end of the connector body is located between the first housing and the second housing, and is fixed by the cooperation of the third connecting part and the first connecting part.

[0026] Furthermore, the second connecting portion includes a first snap fastener fixed to the guide wire connector, and the fourth connecting portion includes a second snap fastener. The first snap fastener is configured to be inserted between the first housing and the second housing and to be fixedly connected to the second snap fastener.

[0027] According to another aspect of this application, a handle assembly for a medical device is provided, comprising the aforementioned connector and handle body; wherein,

[0028] The handle body has a third connecting part and a fourth connecting part at its proximal end. The third connecting part is connected to the first connecting part to fix the connector body.

[0029] When the connector also includes a guide wire connector, the fourth connecting part cooperates with the second connecting part on the guide wire connector to fix the guide wire connector.

[0030] Furthermore, the handle body also includes a first housing and a second housing, which are fastened together. The third connecting part is located inside the first housing and the second housing. The distal end of the connector body is located between the first housing and the second housing, and is fixed by the cooperation of the third connecting part and the first connecting part.

[0031] Furthermore, the second connecting portion includes a first snap fastener fixed to the guide wire connector, and the fourth connecting portion includes a second snap fastener. The first snap fastener is configured to be inserted between the first housing and the second housing and to be fixedly connected to the second snap fastener.

[0032] According to another aspect of this application, a delivery device for a medical device is provided, comprising the aforementioned connector, and:

[0033] The outer sheath connector is located inside the handle body;

[0034] 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;

[0035] The sheath core assembly is movably inserted inside the outer sheath tube, and the proximal end of the sheath core assembly extends out of the outer sheath tube and the outer sheath tube connector and passes through the first channel;

[0036] A rigid sleeve is fitted over the sheath core assembly, the distal end of the rigid sleeve passes through the outer sheath tube connector, the outer sheath tube connector is drivably movable within the handle body along the axial direction of the rigid sleeve, the proximal end of the rigid sleeve is fixed in the first channel, there is a movable space between the rigid sleeve and the sheath core assembly, and the second channel and the third channel communicate with the movable space;

[0037] The second seal is fixed to the proximal end of the outer sheath connector and slidably sleeved on the rigid sleeve to seal the liquid flow channel between the sheath core assembly and the outer sheath connector during the movement of the outer sheath connector.

[0038] Furthermore, the proximal end of the outer sheath connector is provided with a sealing groove and a sealing block, the second sealing element is disposed in the sealing groove, and the sealing block is slidably sleeved on the rigid sleeve and fixed in the sealing groove to press the second sealing element.

[0039] Furthermore, it includes a release member attached to and movable relative to the sheath core assembly, the distal end of the release member extending between the sheath core assembly and the outer sheath tube and used to restrain the medical device on the sheath core assembly, the proximal end of the release member penetrating through the movable space into the second channel and extending out through the proximal end of the second channel, and the distal medical device being released by manipulating the proximal end of the release member.

[0040] This invention provides a connector comprising: a connector body, wherein a first channel, a second channel, and a third channel are interconnected within the connector body; the first channel has open ends, and the second and third channels are located on the sides of the first channel; the first channel is for the passage of the sheath core assembly of the delivery device, the second channel is for the passage of the release element of the delivery device, and the third channel is for injecting liquid into the distal end of the delivery device; a first connecting portion is provided at the distal end of the connector body, which is used to connect to the proximal end of the handle body of the delivery device. On one hand, by integrating the first, second, and third channels into a single connector body and installing the connector body at the proximal end of the handle body, the operating area on the handle body for controlling the retraction of the outer sheath is separated from the operating area for controlling the release element to release the medical device, the operating area for operating the guidewire, and the area for injecting liquid into the distal end of the delivery chamber, thus avoiding mutual interference. This also facilitates coordination between multiple operators operating simultaneously in front-and-back positions and improves space utilization in the operating room.

[0041] On the other hand, when the first, second, and third channels are integrated into a single connector body, the operating positions of the release element, the guidewire, and the injection position are also close to each other. During the operation, the operator does not need to change the operating position significantly, which can further reduce the difficulty of the operation.

[0042] Furthermore, after integrating the two channels into a single connector body, only one mounting position needs to be configured on the handle for installing the connector body. This reduces the number of mounting positions on the handle, thereby lowering the manufacturing cost of the handle and facilitating installation and disassembly. Ultimately, this solves the problem in related technologies where different operating areas of the conveyor overlap and interfere with each other, making simultaneous operation difficult and requiring the operator to change operating positions multiple times during operation, resulting in a relatively inconvenient operation process. Attached Figure Description

[0043] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention, making other features, objects, and advantages of the invention more apparent. The illustrative embodiments of the invention illustrated in the drawings and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0044] Figure 1 This is a schematic cross-sectional view of the assembly structure of the connector and handle according to an embodiment of the present invention;

[0045] Figure 2 This is an exploded view of the assembly structure of the connector and handle according to an embodiment of the present invention;

[0046] Figure 3 This is a partial structural schematic diagram of the conveyor assembly according to an embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of a structure in which two second channels are provided on the connector body according to an embodiment of the present invention;

[0048] Figure 5 yes Figure 4 A schematic diagram of the structure of the connector body assembled to the handle body;

[0049] The components include: 1. Handle body; 100. First housing; 101. Second housing; 102. Third connecting part; 103. Fourth connecting part; 2. Retractable drive mechanism; 3. Sheath core assembly; 30. Middle tube; 31. Sheath core; 4. Connector 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 component connecting connector; 6. Release component; 7. Guide wire connector; 70. Second connecting part; 8. First seal; 9. Second seal; 10. Sealing groove; 11. Sealing pressure block; 13. Slider; 14. Outer sheath tube connector; 200. Outer sheath tube; 23. Rigid sleeve. Detailed Implementation

[0050] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein.

[0052] In this invention, the terms "upper," "lower," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0053] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0054] Furthermore, the terms "set up," "equipped with," "connected," and "fixed" should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In addition, the term "multiple" should mean two or more.

[0056] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] To solve related technical problems, such as Figures 1 to 3 As shown, an embodiment of the present invention provides a connector for a medical device delivery device, suitable for installation at the proximal end of the handle body 1 of an implantable medical device delivery device. The connector includes:

[0058] The connector body 4 has a first channel 41, a second channel 42 and a third channel 43 that are interconnected. The two ends of the first channel 41 are open structures, and the second channel 42 and the third channel 43 are located on the side of the first channel 41.

[0059] The first channel 41 is for the sheath core assembly 3 of the delivery device to pass through, the second channel 42 is for the release part 6 of the delivery device to pass through, and the third channel 43 is for injecting liquid into the distal end of the delivery device.

[0060] The distal end of the connector body 4 is provided with a first connecting part 44, which is used to connect to the proximal end of the handle body 1 of the conveyor.

[0061] A medical device delivery system is used to deliver implantable medical devices to the lesion site within the human body and to release the implantable medical device. Taking a stent as an example of an implantable medical device, the delivery system mainly includes a handle body 1, an outer sheath 200 connected to the handle body 1, and a sheath core assembly 3. The sheath core assembly 3 may include a sheath core 31 and a middle layer tube 30 sleeved and fixed outside the sheath core 31. The stent can be loaded into the loading space at the distal end of the outer sheath 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 element 6. During the intervention, a guidewire inserted in the sheath core 31 guides the outer sheath 200 and the sheath core assembly 3 to move as a whole. The movement can be performed by operating the handle body 1. After reaching the lesion site, the outer sheath 200 is retracted by operating the handle body 1 to expose the stent constrained on the sheath core 31. Then, the release element 6 is operated to release the stent, which can be precisely placed at the target location.

[0062] In this embodiment, the connector is installed on the handle body 1 of the conveyor to create a channel for the release element 6 and a channel for the sheath core assembly 3, so as to facilitate the operation of the release element 6 and the insertion of the guide wire into the sheath core 31 of the sheath core assembly 3. Specifically, the connector is installed at the proximal end of the handle body 1 of the conveyor. The connector body 4 of the connector is provided with a first channel 41, a second channel 42 and a third channel 43 that are interconnected. The first channel 41 can mate with the proximal end of the sheath core assembly 3 and allow the sheath core assembly 3 to pass through. After the sheath core assembly 3 passes through the first channel 41, there is space between the sheath core assembly 3 and the first channel 41.

[0063] The second channel 42 is used for the passage of the release member 6 of the conveyor. 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 assembly 3 to constrain the bracket sleeved on the sheath core 31. The proximal end of the release member 6 disengages from the sheath core assembly 3 and enters the second channel 42. During the release of the bracket, the proximal end of the release member 6 needs to be manipulated to move it and release the distal bracket. During assembly, the distal end of the release member 6 passes through the second channel 42 into the space between the sheath core assembly 3 and the first channel 41 and extends toward the distal end of the conveyor to the location of the bracket.

[0064] The connector body 4 is also provided with a third channel 43, which is connected to the first channel 41. The third channel 43 is used to inject liquid into the distal end of the conveyor. After assembly, the third channel 43 is connected to the space between the sheath core assembly 3 and the wall of the first channel 41. This space is connected to the distal end of the conveyor, so the liquid injected into the third channel 43 can pass through this space and flow to the distal end of the conveyor.

[0065] In this embodiment, the first channel 41 can be arranged axially on the connector body 4, so that it is not easy to deform when the sheath core assembly 3 passes through. The second channel 42 and the third channel 43 are respectively located on both sides of the first channel 41. In some embodiments, the connector body 4 includes two arms, and the second channel 42 and the third channel 43 are respectively located in one arm.

[0066] like Figure 1 and Figure 3 As shown, to facilitate the connection between the connector body 4 and the proximal end of the handle body 1, a first connecting portion 44 is provided at the first end (i.e., the distal end of the connector) of the connector body 4. The first connecting portion 44 can cooperate with the proximal end of the handle body 1 to fix the connector body 4. In one embodiment, the first connecting portion 44 can be inserted into the proximal end of the handle body 1 and fixed by a snap-fit, etc. In another embodiment, the first connecting portion 44 can be snapped and fixed to the proximal end of the handle body 1. In this embodiment, the specific connection structure between the first connecting portion 44 and the proximal end of the handle body 1 is not limited and can be designed according to actual needs.

[0067] In this embodiment, by integrating the first channel 41, the second channel 42, and the third channel 43 into a single connector and installing the connector on the proximal end of the handle body 1, the operating area on the handle body 1 for controlling the retraction of the outer sheath 200 is separated from the operating area for controlling the release of the medical device by the release element 6, the operating area for operating the guidewire, and the area for injection. This avoids interference between the retraction of the outer sheath and other operations, facilitates coordination between multiple people operating simultaneously in front and behind positions, and improves space utilization in the operating room.

[0068] On the other hand, when the first channel 41, the second channel 42, and the third channel 43 are close to each other, the operating positions of the release element 6, the guidewire, and the injection position are also close to each other. During the operation, the operator does not need to change the operating position, which can further reduce the difficulty of operation. Moreover, after integrating the three channels into a connector body 4, only one installation position needs to be configured on the handle body 1 for installing the connector body 4. This reduces the number of installation positions on the handle body 1, thereby reducing the manufacturing cost of the handle body 1 and making it easier to install and disassemble. This solves the problems of inconvenient operation of the delivery device and the high manufacturing cost and complicated installation of the handle body 1 in the related technology.

[0069] In some embodiments, the second channel 42 is positioned close to the distal end of the first channel 41 to minimize the contact area of ​​the release member 6 within the first channel 41 and reduce friction. The third channel 43 is positioned close to the proximal end of the first channel 41 to facilitate the removal of internal air by means of liquid injection.

[0070] Depending on the requirements, two or more release members 6 can be provided to better constrain the stent to the distal end of the sheath core 31. In one embodiment, two release members 6 are provided, which can be located on a first side and a second side of the sheath core 31, respectively. One release member 6 is longer and can connect to the distal end of the stent, while the other release member 6 is shorter and can connect to the proximal end of the stent, thereby stably constraining the stent to the sheath core 31. Accordingly, as Figure 4 and Figure 5 As shown, in this embodiment, two second channels 42 need to be configured inside the connector body 4. The two second channels 42 are distributed circumferentially around the connector body 4, and each of the two second channels 42 leads to a release element 6, so that different release elements 6 can be operated in a certain order during the release process. Of course, there can be more release elements 6, and correspondingly, more second channels 42 need to be configured inside the connector body 4. In this embodiment, the specific number is not limited.

[0071] In one implementation, such as Figure 1 and Figure 3 As shown, the axis of the first channel 41 is coaxial with the axis of the proximal portion of the sheath core assembly 3. In the direction of movement of the release member 6, the axis of the second channel 42 forms an obtuse angle with the axis of the first channel 41. Specifically, taking a horizontally placed conveyor as an example, the axis of the first channel 41 is horizontal, which facilitates connection to the sheath core assembly 3 and also facilitates the entry of the guide wire into the sheath core assembly 3 and the movement of the guide wire. The second channel 42 is located to the side of the first channel 41 and is inclined. In the direction of movement of the release member 6, the second channel 42 forms an obtuse angle (i.e., the angle between the first channel 41 and the second channel 42 at the distal end is obtuse), thus making the bending angle of the release member 6 at the junction of the second channel 42 and the first channel 41 smaller, reducing the resistance encountered by the release member 6 during movement, and facilitating the pulling of the release member 6 during release. In some embodiments, this angle can be 120° to 160°.

[0072] In one embodiment of the first connecting part 44, the first connecting part 44 includes a connecting groove for assembling with a connecting plate near the end of the handle body 1 to fix the connector body 4 to the near end of the handle body 1.

[0073] Specifically, the handle body 1 of the conveyor may include two parts, namely a first housing 100 and a second housing 101 that can be fastened to each other. A connecting plate is provided on the inner proximal end of the first housing 100 and the second housing 101. The connecting plate is inserted into the connecting groove of the connector body 4 by the fastening of the first housing 100 and the second housing 101, thereby fixing the connector body 4 to the proximal end of the handle body 1.

[0074] Of course, in another embodiment, the first connecting part 44 includes a connecting plate for fitting with a connecting groove at the proximal end of the handle body 1 to fix the connector body 4 to the proximal end of the handle body 1.

[0075] In one embodiment, the delivery device suitable for the connector includes an outer sheath connector 14 disposed within the handle body 1. The outer sheath connector 14 is capable of connecting to the outer sheath 200 and can be retracted by a drive. The sheath core assembly 3 includes a sheath core 31 and a middle tube 30. The proximal end of the middle tube 30 is located within the outer sheath connector 14, and the proximal end of the sheath core 31 extends out of the middle tube 30, the outer sheath connector 14, and into a first channel 41 of the connector body 4. To create a liquid flow channel and to support and guide the movement of the outer sheath connector 14, a rigid sleeve 23, such as a stainless steel sleeve, is fitted onto the sheath core 31 in this embodiment. 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.

[0076] With this configuration, the outer sheath connector 14 can retract along the rigid sleeve 23, thus improving the stability and accuracy of its retraction. Simultaneously, a channel can be formed between the rigid sleeve 23 and the sheath core 31. The distal end of this channel communicates with the internal space of the outer sheath connector 14 and the space between the outer sheath 200 and the middle tube 30. The proximal end of this channel communicates with the space between the sheath core 31 and the first channel 41, i.e., with the second channel 42 and the third channel 43. Therefore, the release member 6, inserted through the second channel 42, can extend distally through the channel within the rigid sleeve 23, and the liquid injected through the third channel 43 can also flow distally through the channel within the rigid sleeve 23.

[0077] To facilitate the assembly of the rigid sleeve 23, such as Figure 3 As shown, in this embodiment, the first channel 41 includes a distal channel 410, a middle channel 411, and a proximal channel 412; wherein, the diameter of the distal channel 410 is larger than the diameter of the middle channel 411, the distal channel 410 is used to pass through the rigid sleeve 23 sleeved outside the sheath core assembly 3 in the conveyor, and the inner end face of the distal channel 410 is used to abut against the end face of the rigid sleeve 23;

[0078] The middle channel 411 and the proximal portion are used for the portion of the sheath core assembly 3 extending out of the rigid sleeve 23 to pass through. The entrance of the second channel 42 is located in the middle channel 411 and close to the distal channel 410. The entrance of the third channel 43 is located in the middle channel 411 and close to the proximal channel 412.

[0079] Specifically, the diameter of the distal channel 410 matches the diameter of the rigid sleeve 23, and the diameter of the intermediate channel 411 matches the diameter of the sheath core 31. During installation, the end face of the rigid sleeve 23 abuts against the end face of the distal channel 410, while the sheath core 31 enters the intermediate channel 411 and can extend into the proximal channel. The distal channel 410 allows for positioning of the relative positions of the connector body 4 and the rigid sleeve 23, facilitating the insertion of the release element 6 into the rigid sleeve 23 via the second channel 42.

[0080] To facilitate guidewire insertion, an additional guidewire connector 7 is required, such as... Figure 1 and Figure 3 As shown, the guidewire connector 7 can be installed at the proximal end of the connector body 4 and corresponds to the first channel 41. To facilitate the connection between the guidewire connector 7 and the connector body 4, in this embodiment, the diameter of the proximal channel 412 is larger than the diameter of the middle channel 411, and the proximal channel 412 is used to connect the guidewire connector 7. The diameter of the proximal channel 412 matches the diameter of the distal end of the guidewire connector 7, and the distal end of the guidewire connector 7 can be inserted into the proximal channel 412. The sheath core 31 can be inserted into the guidewire connector 7 and fixed to facilitate the guidewire entering the sheath core 31.

[0081] In one implementation, such as Figure 3 As shown, the guide wire connector 7 is detachably connected to the connector body 4 and corresponds to the first channel 41. The guide wire connector 7 is used to guide the wire into the sheath core 31.

[0082] Specifically, in this embodiment, the guidewire connector 7 can be connected to the proximal end of the first channel 41, specifically to the proximal channel 412 of the first channel 41. The sheath core 31 in the sheath core assembly 3 is mated to the guidewire connector 7, and the guidewire can enter the sheath core 31 through the guidewire connector 7.

[0083] In one embodiment, the guide wire connector 7 is a Luer connector, and the connector body 4 is a double Luer connector.

[0084] After configuring a third channel 43 on the connector body 4 for liquid injection, it is necessary to prevent liquid from flowing out from the proximal end of the connector body 4. Therefore, as follows... Figure 3 As shown, the connector in this embodiment also includes a first sealing element 8. The first sealing element 8 is disposed in the proximal channel 412 and abuts against the end face of the guide wire connector 7. The first sealing element 8 is used to seal the sheath core 31 of the sheath core assembly 3.

[0085] Specifically, the first sealing element 8 can be a sealing ring, which is fitted onto the sheath core 31. After the guide wire connector 7 is installed to the proximal end of the connector body 4, it presses the first sealing element 8 against the end face of the proximal channel 412, thereby sealing the proximal end of the first channel 41 through the first sealing element 8 and preventing the liquid injected through the third channel 43 from flowing out.

[0086] like Figure 3 As shown, to facilitate the fixing of the guide wire connector 7, a second connecting part 70 is provided on the guide wire connector 7 in this embodiment. The second connecting part 70 is used for fixed connection with the proximal end of the handle body 1. In one embodiment, the second connecting part 70 can also be a connecting groove. Correspondingly, a connecting plate corresponding to the connecting groove is provided on the handle body 1 of the conveyor. When the two shells of the handle body 1 are fastened together, the connecting plate is inserted into the connecting groove to fix the guide wire connector 7. In another embodiment, the second connecting part 70 can be inserted into the proximal end of the handle body 1 for fixation. For example, the second connecting part 70 can be set as a buckle, and a slot is provided at the proximal end of the handle body 1. The buckle can be inserted into the slot and fixed.

[0087] When releasing the bracket, the release component 6 needs to be pulled back. This process needs to be performed on the connector body 4. To facilitate pulling the release component 6, as follows: Figure 1 and Figure 3 As shown, the connector assembly in this embodiment also includes a release member connecting connector 5, which is detachably fixed to the connector body 4 and corresponds to the second channel 42. The release member connecting connector 5 is used to fix the release member 6 extending from the distal end of the second channel 42.

[0088] Specifically, after the bracket is loaded, the proximal end of the release element 6 can be fixed to the release element connecting joint 5 after passing through the second channel 42. The release element connecting joint 5 can then be fixed to the joint body 4, thereby fixing the release element 6. When it is necessary to release the bracket, the release element connecting joint 5 can be removed from the joint body 4. At this time, the release element connecting joint 5 can be held and pulled outward to pull the release element 6 to release the bracket.

[0089] In one embodiment, the release element connecting joint 5 and the joint body 4 are detachably connected via a quick-release structure. Specifically, the release element connecting joint 5 and the joint body 4 can be connected by threads or snap-fit, thereby facilitating installation and disassembly, and consequently, the loading and release of the bracket. The release element 6 and the release element connecting joint 5 can be bolted or welded together, etc., but this embodiment does not impose any limitations.

[0090] According to another aspect of this application, such as Figure 1 As shown, a handle assembly for implantable medical devices is provided, including the aforementioned connector and handle body 1; wherein,

[0091] The handle body 1 has a third connecting part 102 and a fourth connecting part 103 at its proximal end. The third connecting part 102 is connected to the first connecting part 44 to fix the connector body 4, and the fourth connecting part 103 is connected to the second connecting part 70 to fix the guide wire connector 7.

[0092] In this embodiment, as described above, as... Figure 2As shown, the first connecting part 44 and the second connecting part 70 can be configured as connecting grooves, and the third connecting part 102 and the fourth connecting part 103 can be configured as connecting plates. The second connecting part 70 can also be configured as a snap-fit, and the fourth connecting part 103 can also be configured as a slot.

[0093] In one embodiment, the handle body 1 further includes a first housing 100 and a second housing 101, which are fastened together. A third connecting part 102 is disposed inside the first housing 100 and the second housing 101. The distal end of the connector body 4 is located between the first housing 100 and the second housing 101 and is fixed by mutual cooperation between the third connecting part 102 and the first connecting part 44. The third connecting part 102 may be a connecting plate located inside the first housing 100 and the second housing 101, and the first connecting part 44 may be a connecting groove disposed at the distal end of the connector body 4. After the first housing 100 and the second housing 101 are fastened together, the connecting plate is inserted into the connecting groove to fix the connector body 4.

[0094] In one implementation, such as Figure 3 As shown, the second connecting part 70 includes a first buckle fixed to the guide wire connector 7, and the fourth connecting part 103 includes a second buckle. The first buckle can be inserted between the first housing 100 and the second housing 101 and is fixedly connected to the second buckle.

[0095] Specifically, the first snap-fit ​​can be located at one end of the guide wire connector 7 near the connector body 4, and the second connecting part 70 can be two and symmetrically distributed. The first housing 100 and the second housing 101 are fastened together at their proximal ends to form an insertion port. The first snap-fit ​​can be inserted between the first housing 100 and the second housing 101 through the insertion port and is snapped together with the second snap-fit. The guide wire connector 7 has a sealing part, which closes the end face of the insertion port after the first snap-fit ​​and the second snap-fit ​​are connected.

[0096] In one implementation, such as Figure 1 As shown, the handle assembly also includes:

[0097] The retraction drive mechanism 2 is located inside the handle body 1. The retraction drive mechanism 2 includes a drive end and an operating end. The operating end can control the movement of the drive end inside the handle body 1.

[0098] Slider 13 is disposed inside handle body 1. Slider 13 is connected to drive end and is driven by drive end to move slider 13 backward relative to handle body 1.

[0099] The outer sheath tube connector 14 is located inside the handle body 1 and can move along the axial direction of the handle body 1. The outer sheath tube connector 14 is used to fix the outer sheath tube 200 that passes through the handle body 1. The outer sheath tube connector 14 is connected to the slider 13. During the backward movement of the slider 13, the outer sheath tube connector 14 is pushed to move backward.

[0100] The retraction drive mechanism 2, the slider 13, and the outer sheath connector 14 are all located at the far end of the handle body 1.

[0101] Specifically, in this embodiment, the retraction drive assembly is responsible for being operated to drive the slider 13 to move backward within the handle body 1. The retraction drive assembly can adopt various structural forms, such as including a gear and a rack. The rack can slide back and forth within the handle body 1, and the slider 13 is mounted on the rack. The gear meshes with the rack, and rotating the gear drives the rack to slide back and forth, thereby driving the slider 13 to move linearly. Therefore, this embodiment does not limit the specific structure of the retraction drive assembly and can be designed according to actual needs.

[0102] According to another aspect of this application, such as Figure 1 and Figure 3 As shown, a delivery device for a medical device is provided, including the aforementioned handle assembly, and:

[0103] The outer sheath connector 14 is located inside the handle body 1;

[0104] The outer sheath 200 has its proximal end movably inserted into the handle body 1 and fixedly connected to the outer sheath connector 14.

[0105] The sheath core assembly 3 is movably inserted inside the outer sheath tube 200, and the proximal end of the sheath core assembly 3 extends out of the outer sheath tube 200 and the outer sheath tube connector 14 and passes through the first channel 41;

[0106] A rigid sleeve 23 is sleeved on the outside of the sheath core assembly 3. The distal end of the rigid sleeve 23 passes through the outer sheath tube connector 14. The outer sheath tube connector 14 can be driven to move along the axial direction of the rigid sleeve 23 within the handle body 1. The proximal end of the rigid sleeve 23 is fixed in the first channel 41. There is a movable space between the rigid sleeve 23 and the sheath core assembly 3. The second channel 42 and the third channel 43 are connected to the movable space.

[0107] The second sealing element 9 is fixed to the proximal end of the outer sheath tube connector 14 and slidably sleeved on the rigid sleeve 23 to seal the liquid flow channel between the sheath core assembly 3 and the outer sheath tube connector 14 during the movement of the outer sheath tube connector 14, thereby preventing blood from flowing out of the body.

[0108] In this embodiment, the outer sheath connector 14 is disposed within the handle body 1. The outer sheath connector 14 can connect to the outer sheath 200 and can be retracted and moved by a drive. The sheath core assembly 3 includes a sheath core 31 and a middle tube 30. The proximal end of the middle tube 30 is located within the outer sheath connector 14, and the proximal end of the sheath core 31 extends out of the middle tube 30 and the outer sheath connector 14 and enters the first channel 41 of the connector body 4. To construct a liquid flow channel and to support and guide the movement of the outer sheath connector 14, a rigid sleeve 23, such as a stainless steel sleeve, is fitted onto the sheath core 31 in this embodiment. 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.

[0109] With this configuration, the outer sheath connector 14 can retract along the rigid sleeve 23, thus improving the stability and accuracy of its retraction. Simultaneously, a channel can be formed between the rigid sleeve 23 and the sheath core 31. The distal end of this channel communicates with the internal space of the outer sheath connector 14 and the space between the outer sheath 200 and the middle tube 30. The proximal end of this channel communicates with the space between the sheath core 31 and the first channel 41, i.e., with the second channel 42 and the third channel 43. Therefore, the release member 6, inserted through the second channel 42, can enter the outer sheath connector 14 through the channel within the rigid sleeve 23. Liquid injected from the third channel 43 can also flow into the outer sheath connector 14 through the channel within the rigid sleeve 23 and flow distally through the space between the outer sheath 200 and the middle tube 30.

[0110] Since liquid needs to be injected distally through the third channel 43, the liquid needs to flow through the internal space of the outer sheath connector 14. Therefore, it is necessary to prevent the liquid from leaking from the proximal end of the outer sheath connector 14. It is also necessary to prevent blood entering the outer sheath 200 during delivery from leaking from the proximal end of the outer sheath connector 14. In this embodiment, a second sealing element 9 is provided. The second sealing element 9 is fixed to the proximal end of the outer sheath connector 14 and slidably sleeved on the rigid sleeve 23. The gap between the proximal end of the outer sheath connector 14 and the rigid sleeve 23 is sealed by the second sealing element 9, thereby preventing the liquid inside the outer sheath connector 14 from flowing out. Simultaneously, since the outer sheath connector 14 needs to move along the rigid sleeve 23, the second sealing element 9 needs to be slidably sleeved on the rigid sleeve 23. Therefore, the second sealing element 9 achieves a dynamic sealing function in this embodiment.

[0111] In addition, based on the sealing concept, the rigid sleeve 23 in this embodiment can withstand greater compressive force without deformation, which can improve the sealing performance without affecting the movement of the outer sheath connector 14.

[0112] In one embodiment, for ease of sealing, such as Figure 3As shown, a sealing groove 10 is provided at the proximal end of the outer sheath connector 14, and a second sealing element 9 is disposed within the sealing groove 10. A sealing block 11 is also provided, which is slidably sleeved on the sheath core assembly 3 and fixed within the sealing groove 10 to press the second sealing element 9. The sealing block 11 and the sealing groove 10 can be interference-fitted to press and fix the second sealing element 9.

[0113] In one embodiment, a release member 6 is also included. The release member 6 is attached to the outside of the sheath core assembly 3 and is movable relative to the sheath core assembly 3. The distal end of the release member 6 extends between the sheath core assembly 3 and the outer sheath tube 200 and is used to restrain the medical device on the sheath core assembly 3. The proximal end of the release member 6 passes through the movable space into the second channel 42 and extends out through the proximal end of the second channel 42. The distal medical device is released by operating the proximal end of the release member 6.

[0114] Specifically, in this embodiment, the release element 6 can be a slender rod-shaped or filamentous structure. The sheath core assembly 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 element 6 is connected to a medical device sleeved on the sheath core 31, such as a stent, thereby constraining the medical device to the distal end of the sheath core 31. The proximal end of the release element 6 extends into the second channel 42. The proximal end of the release element 6 needs to be fixed, so the proximal end of the release element 6 can further extend out of the second channel 42 and be fixedly connected to the release element 6 connecting connector 5. During release, the release element 6 connecting connector 5 is operated to separate from the connector body 4, thereby pulling the release element 6 to move, separating the distal end of the release element 6 from the medical device, and realizing the precise release of the medical device.

[0115] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A delivery device for a medical device, characterized in that, include: The connector body has a first channel, a second channel and a third channel that are interconnected. The two ends of the first channel are open structures, and the second channel and the third channel are located on the side of the first channel. The first channel is for the sheath core assembly of the delivery device to pass through, the second channel is for the release element of the delivery device to pass through, and the third channel is for injecting liquid into the distal end of the delivery device; The distal end of the connector body is provided with a first connecting part, which is used to connect to the proximal end of the handle body of the conveyor. The outer sheath connector is located inside 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; The sheath core assembly is movably inserted inside the outer sheath tube, and the proximal end of the sheath core assembly extends out of the outer sheath tube and the outer sheath tube connector and passes through the first channel; A rigid sleeve is fitted over the sheath core assembly, the distal end of the rigid sleeve passes through the outer sheath tube connector, the outer sheath tube connector is drivably movable within the handle body along the axial direction of the rigid sleeve, the proximal end of the rigid sleeve is fixed in the first channel, there is a movable space between the rigid sleeve and the sheath core assembly, and the second channel and the third channel communicate with the movable space; The second seal is fixed to the proximal end of the outer sheath connector and slidably sleeved on the rigid sleeve to seal the liquid flow channel between the sheath core assembly and the outer sheath connector during the movement of the outer sheath connector.

2. The conveyor of claim 1, wherein, The proximal end of the outer sheath connector is provided with a sealing groove and a sealing block. The second sealing element is disposed in the sealing groove. The sealing block is slidably sleeved on the rigid sleeve and fixed in the sealing groove to press the second sealing element.

3. The conveyor of claim 1, wherein, It also includes a release member attached to and movable relative to the sheath core assembly, the distal end of the release member extending between the sheath core assembly and the outer sheath tube and used to restrain the medical device on the sheath core assembly, the proximal end of the release member passing through the movable space into the second channel and extending out through the proximal end of the second channel.

4. The conveyor of claim 1, wherein, The second channel is configured to have two or more channels, and different second channels are used to pass through different release elements.

5. The conveyor of claim 4, wherein, Two or more of the second channels are distributed circumferentially along the connector body.

6. The conveyor of claim 1, wherein, The axis of the first channel is coaxial with the axis of the sheath core assembly. In the direction of movement of the release member, the axis of the second channel is at an obtuse angle to the axis of the first channel, so that the bending angle of the release member when it enters the first channel through the second channel is an obtuse angle.

7. The conveyor according to claim 1, characterized in that, The first connecting portion includes a connecting groove for assembling with a connecting plate near the proximal end of the handle body, thereby fixing the connector body to 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 to fix the connector body at the proximal end of the handle body.

8. The conveyor of claim 6, wherein, The first channel includes a far-segment channel, a mid-segment channel, and a near-segment channel; wherein, The diameter of the distal channel is larger than that of the middle channel. The distal channel is used to pass through a rigid sleeve fitted outside the sheath core assembly in the conveyor. The inner end face of the distal channel is used to abut against the end face of the rigid sleeve. The middle channel and the proximal channel are used for the portion of the sheath core assembly extending out of the rigid sleeve to pass through. The entrance of the second channel is located in the middle channel and close to the distal channel, and the entrance of the third channel is located in the middle channel and close to the proximal channel.

9. The conveyor of claim 8, wherein, It also includes a guidewire connector, wherein 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 the guidewire connector is used to pass the guidewire into the sheath core of the sheath core assembly.

10. The conveyor of claim 9, wherein, It also includes a first seal, which is disposed within the proximal channel and abuts against the end face of the guidewire connector. The first seal is used to seal the sheath core of the sheath core assembly.

11. The conveyor of claim 9, wherein, The guide wire connector is provided with a second connecting part, which is used to fix and connect to the proximal end of the handle body.

12. The conveyor according to claim 1, characterized in that, It also includes a release element connection connector, which is detachably fixed to the connector body via a quick-release structure and corresponds to the second channel. The release element connection connector is used to fix a release element extending from the distal end of the second channel.

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