Handle, conveyor and medical device

Abstract

This invention provides a handle, a delivery device, and a medical device. The delivery device includes a handle, which comprises a housing, a first driving part, and a limiting assembly. The first driving part is used to drive a release tube to move in a predetermined direction. The limiting assembly includes a first limiting mechanism and a second limiting mechanism. The first limiting mechanism is disposed within the housing and can rotate about the axis of the release tube. The second limiting mechanism is configured to move simultaneously with the release tube. When the release tube moves to a predetermined position in the predetermined direction, the first limiting mechanism and the second limiting mechanism cooperate to prevent the release tube from continuing to move in the predetermined direction. When the first limiting mechanism rotates and disengages from the second limiting mechanism, the release tube is allowed to continue moving in the predetermined direction. This delivery device can temporarily prevent the release tube from continuing to move in the predetermined direction when it moves to a predetermined position using the limiting assembly, thereby facilitating the operator to perform other operations and meeting usage requirements.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a handle, a delivery device, and a medical device. Background Technology

[0002] Heart valves are the gateways to the heart's blood circulation. If they narrow or fail, the heart will lack sufficient power or fail, leading to symptoms such as chest tightness, shortness of breath, generalized edema, weakness, and chest pain. This poses a significant threat to the life and quality of life of the elderly. With population aging and advancements in medical technology, valvular heart disease (VHD) has become the third leading cause of cardiovascular disease, seriously endangering human health. Currently, traditional surgery remains the preferred treatment for this disease. However, for elderly patients, those with multiple organ diseases, those with a history of open-chest surgery, and those with poor recovery capabilities, traditional surgery carries high risks and mortality rates; some patients may not even have the opportunity to undergo surgery.

[0003] Interventional therapy is a novel treatment technique developed in recent years, a minimally invasive surgical method. Guided by medical imaging equipment, interventional therapy involves introducing specialized medical devices into the body via a delivery system to diagnose and treat lesions locally. Compared to traditional surgery, interventional therapy requires no incisions and offers advantages such as minimal trauma, rapid recovery, and better outcomes. Interventional therapy can be used to treat valvular heart disease, as well as other diseases. The specific medical devices used vary depending on the disease; for example, for valvular heart disease, artificial valves are used, while for vascular diseases, medical stents may be employed.

[0004] Delivery systems typically consist of a handle and a catheter assembly. The catheter assembly, including an inner and outer cannula, is used to load the medical device. The handle connects to the catheter assembly and controls the inner and / or outer cannula to allow the medical device to be introduced into the body. As the power source throughout the interventional procedure, the handle must ensure sufficient safety, effectiveness, and cost-effectiveness. Different stages of the interventional procedure present different operational needs for the handle. For example, during the control of outer cannula retraction to release the implant, the operator may need to pause retraction and perform other operations, such as adjusting the implant's position, once the outer cannula has retracted to the predetermined position. Therefore, further optimization of the handle's structure is necessary to meet these diverse usage requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a handle, a delivery device, and a medical device that, when delivering and releasing a medical implant using the delivery device, can pause the movement of the release tube when it reaches a predetermined position, thus meeting usage requirements.

[0006] To achieve the above objectives, the present invention provides a handle for controlling a catheter assembly, the catheter assembly including an outer tube and an inner tube partially passing through the outer tube, wherein one of the outer tube and the inner tube is a release tube; the handle includes:

[0007] case;

[0008] A first driving unit is used to drive the release tube to move in a predetermined direction; and

[0009] The limiting assembly includes a first limiting mechanism and a second limiting mechanism. The first limiting mechanism is partially disposed within and connected to the housing, and is configured to rotate about the axis of the release tube. The second limiting mechanism is disposed within the housing and is configured to move with the movement of the release tube.

[0010] The handle is configured such that when the first driving unit drives the release tube to move in a predetermined direction and the release tube reaches a predetermined position, the first limiting mechanism and the second limiting mechanism cooperate to prevent the release tube from continuing to move in the predetermined direction; when the first limiting mechanism rotates about the axial direction of the release tube and the first limiting mechanism and the second limiting mechanism are disengaged, the first driving unit is allowed to drive the release tube to continue to move in the predetermined direction.

[0011] Optionally, the handle further includes a first connecting component disposed within the housing and drivenly connected to the first driving part, and also used for connecting to the proximal end of the release tube; the second limiting mechanism is connected to the first connecting component.

[0012] Optionally, the first limiting mechanism includes a first positioning seat and a first limiting part; the first positioning seat is connected to the housing and configured to rotate about the axis of the release tube; the first limiting part is connected to the first positioning seat and at least partially protrudes from a predetermined end face of the first positioning seat; the second limiting mechanism includes a second limiting part.

[0013] The handle is configured such that the first limiting part and the second limiting part at least partially overlap in the circumferential direction, and when the first limiting part and the second limiting part abut against each other, the first limiting mechanism and the second limiting mechanism cooperate with each other. When the first positioning seat rotates about the axis of the release tube and causes the first limiting part to be misaligned with the second limiting part in the circumferential direction, the second limiting mechanism and the first limiting mechanism disengage.

[0014] Optionally, the first limiting portion is movably connected to the first positioning seat and is configured to move axially along the release tube to change the length of the portion of the first limiting portion protruding from a predetermined end face of the first positioning seat.

[0015] Optionally, the first positioning seat is provided with a screw hole extending through the axial direction of the release tube, and the first limiting part is a screw rod, which passes through the screw hole.

[0016] Optionally, the housing is provided with a first sliding groove extending circumferentially; the first limiting mechanism further includes a first lever, one end of which is connected to the first positioning seat, and the other end passes through the first sliding groove and extends out of the housing.

[0017] Optionally, the first limiting mechanism further includes a first elastic sleeve, which is fitted onto the first lever, and the outer wall of the first elastic sleeve contacts the groove wall of the first slide groove, causing the first elastic sleeve to deform.

[0018] Optionally, the first positioning seat is an annular structure with an inner hole, and the proximal end of the first connecting component passes through the inner hole and is connected to the first driving part.

[0019] Optionally, there are multiple first limiting portions, and the multiple first limiting portions are arranged sequentially along the circumference of the first positioning seat. The length of the portion of each first limiting portion protruding from the predetermined end face of the first positioning seat decreases sequentially along the first direction, so that the axial distance from each first limiting portion to the second limiting portion increases sequentially along the first direction.

[0020] The handle is configured such that when the first positioning seat rotates about the axis of the release tube in a second direction and one of the first limiting portions is offset from the second limiting portion in the circumferential direction, the other first limiting portion can at least partially overlap with the second limiting portion in the circumferential direction; the second direction is opposite to the first direction.

[0021] Optionally, the first drive unit is rotatably connected to the proximal end of the housing;

[0022] The inner wall of the first driving part is provided with an internal thread, the first connecting assembly includes a lead screw, the distal end of the lead screw is connected to the proximal end of the release tube, and the outer surface of the distal end of the lead screw is connected with a second limiting mechanism. The outer surface of the proximal end of the lead screw is provided with an external thread, which engages with the internal thread on the first driving part to perform helical transmission; or,

[0023] The first connecting assembly includes a threaded sleeve and a lead screw. The threaded sleeve is connected to the inner wall of the first driving part and is configured to rotate synchronously with the first driving part. The inner wall of the threaded sleeve is provided with an internal thread. The distal end of the lead screw is connected to the proximal end of the release tube, and a second limiting mechanism is connected to the outer surface of the distal end of the lead screw. The outer surface of the proximal end of the lead screw is provided with an external thread, which cooperates with the internal thread on the threaded sleeve to perform helical transmission.

[0024] Optionally, the housing is provided with an observation window for observing the movement of the lead screw.

[0025] Optionally, the release tube is the outer tube, and the predetermined direction is from the distal end to the proximal end; or,

[0026] The release tube is the inner tube, and the predetermined direction is from the proximal end to the distal end.

[0027] To achieve the above objectives, the present invention also provides a delivery device, including a catheter assembly and a handle as described in any of the preceding claims, the catheter assembly including an outer tube and an inner tube partially passing through the outer tube; the handle is connected to the proximal end of the catheter assembly and is used to control the catheter assembly to generate axial relative movement between the inner tube and the outer tube.

[0028] To achieve the above objectives, the present invention also provides a medical device comprising a medical implant and a delivery device as described above, wherein the medical implant is mounted on the distal end of the catheter assembly and compressed within the space between the outer tube and the inner tube.

[0029] To achieve the above objectives, the present invention also provides a delivery device, including a catheter assembly and a handle as described above, the catheter assembly including an outer tube and an inner tube partially passing through the outer tube, one of the outer tube and the inner tube being a release tube; the handle is connected to the proximal end of the catheter assembly and is used to control the release tube to move in a predetermined direction to cause axial relative movement between the inner tube and the outer tube; a second limiting mechanism is connected to the release tube.

[0030] To achieve the above objectives, the present invention also provides a medical device comprising a medical implant and a delivery device as described above, the medical implant being mounted on the distal end of the catheter assembly and compressed within the space between the outer tube mechanism and the inner tube mechanism.

[0031] Compared with the prior art, the handle, delivery device, and medical device of the present invention have the following advantages:

[0032] The aforementioned delivery device includes a conduit assembly and a handle; the conduit assembly includes an outer tube and an inner tube partially inserted within the outer tube, and the outer tube and the inner tube are capable of axial relative movement, one of the outer tube and the inner tube being a release tube; the handle includes a housing, a first drive unit, and a limiting assembly; wherein the first drive unit is used to drive the release tube to move in a predetermined direction; the limiting assembly includes a first limiting mechanism and a second limiting mechanism, the first limiting mechanism being partially disposed within the housing and connected to the housing, and configured to rotate about the axis of the release tube; the second limiting mechanism being disposed within the housing and configured to move simultaneously with the release tube; the handle is configured to move when the first drive unit drives the release tube along... When the release tube moves in the predetermined direction and reaches the predetermined position, the first limiting mechanism and the second limiting mechanism cooperate to prevent the release tube from continuing to move in the predetermined direction. When the first limiting mechanism rotates around the axis of the release tube and disengages from the first limiting mechanism and the second limiting mechanism, the release tube is allowed to continue moving in the predetermined direction. This conveyor can use the limiting components to temporarily prevent the release tube from continuing to move in the predetermined direction when the release tube moves to the predetermined position, so as to facilitate the operator to perform other operations and meet the usage requirements. Afterwards, the cooperation between the first limiting mechanism and the second limiting mechanism can be released by rotating the first limiting mechanism, and the first driving unit can continue to drive the release tube to move in the predetermined direction, which is simple and convenient to use.

[0033] The aforementioned delivery device includes a conduit assembly, a housing, a first drive unit, and a limiting assembly; the conduit assembly includes an outer tube mechanism and an inner tube mechanism, the inner tube mechanism being partially disposed within the outer tube mechanism, and one of the outer tube mechanism and the inner tube mechanism being a release tube mechanism; the housing is connected to the proximal end of the conduit assembly, the first drive unit is connected to the release tube mechanism, and is used to drive the release tube mechanism to move in a predetermined direction; the limiting assembly includes a first limiting mechanism and a second limiting mechanism, the first limiting mechanism being partially disposed within the housing and connected to the housing, and configured to be rotatable about the axis of the housing; the second limiting mechanism being disposed within the housing and connected to the release tube mechanism; the delivery device is configured to, when the release tube mechanism moves in a predetermined direction... When the device moves to a predetermined position in a fixed direction, the second limiting mechanism cooperates with the first limiting mechanism to prevent the release tube mechanism from continuing to move in the predetermined direction. When the first limiting mechanism rotates around the axis of the release tube mechanism and disengages the second limiting mechanism from the first limiting mechanism, the release tube mechanism is allowed to continue moving in the predetermined direction. This conveyor can temporarily prevent the release tube mechanism from continuing in the predetermined direction when it moves to the predetermined position using the limiting components, so as to facilitate the operator to perform other operations and meet the usage requirements. Afterwards, the cooperation between the first limiting mechanism and the second limiting mechanism can be released by rotating the first limiting mechanism, and the first driving part can continue to drive the release tube mechanism to retract in the predetermined direction, which is simple and convenient to use. Attached Figure Description

[0034] The accompanying drawings are provided to better understand the invention and are not intended to unduly limit the scope of the invention. Wherein:

[0035] Figure 1 This is a schematic diagram of the structure of a conveyor provided according to an embodiment of the present invention;

[0036] Figure 2 This is a partial structural schematic diagram of the conveyor provided by the present invention according to one embodiment;

[0037] Figure 3 This is a partial structural schematic diagram of a conveyor provided according to an embodiment of the present invention. Part of the housing is omitted in the figure, and the internal structure of the housing is shown.

[0038] Figure 4 This is a partially enlarged schematic diagram of a conveyor provided according to an embodiment of the present invention, in which the outer tube is in a state before it moves from the distal end to the proximal end;

[0039] Figure 5 This is a partially enlarged schematic diagram of a conveyor provided according to an embodiment of the present invention, in which the outer tube moves from the distal end to the proximal end to a predetermined position and the first limiting mechanism and the second limiting mechanism cooperate with each other;

[0040] Figure 6 This is a partially enlarged schematic diagram of a conveyor provided according to an embodiment of the present invention, in which the first limiting mechanism and the second limiting mechanism are disengaged;

[0041] Figure 7 yes Figure 3 An enlarged schematic diagram of point A on the conveyor shown;

[0042] Figure 8 This is a schematic diagram of the structure of the second connecting assembly of the conveyor according to an embodiment of the present invention;

[0043] Figure 9 This is a schematic diagram of the structure of the third connecting component of the conveyor according to an embodiment of the present invention;

[0044] Figure 10 This is a schematic diagram of the anti-rotation component of a conveyor according to an embodiment of the present invention.

[0045] [The annotations in the attached figures are explained below]:

[0046] 1000 - Handle, 1101 - First fastening ring, 1102 - Second fastening ring, 1110 - Housing, 1111 - First slide groove, 1112 - Second slide groove, 1113 - Observation window, 1120 - First drive unit, 1130 - Second drive unit, 1131 - Third slide groove, 1210 - Threaded sleeve, 1220 - Lead screw, 1310 - First limiting mechanism, 1311 - First positioning seat, 1312 - First limiting part, 1320 - Second limiting mechanism, 1321 - Second limiting part, 1313 - First lever 1314-First elastic sleeve, 1410-Second positioning seat, 1411-First sub-positioning seat, 1412-Connecting arm, 1413-Second sub-positioning seat, 1420-Connecting tube, 1430-Third limiting part, 1510-Third positioning seat, 1511-First central through hole, 1512-Relief groove, 1520-Second lever, 1530-Second elastic sleeve, 1610-Auxiliary assembly plate, 1710-Anti-rotation component, 1711-Second central through hole, 1712-First anti-rotation part, 1713-Second anti-rotation part;

[0047] 2100 - outer tube, 2200 - inner tube. Detailed Implementation

[0048] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the actual number, shape, and size of components in the actual implementation. In the actual implementation, the type, quantity, and proportion of each component can be arbitrarily changed, and the component layout may also be more complex.

[0049] Furthermore, while each embodiment described below possesses one or more technical features, this does not imply that users of the present invention must simultaneously implement all technical features in any embodiment, or can only separately implement some or all technical features in different embodiments. In other words, provided it is feasible, those skilled in the art can, based on the disclosure of the present invention and depending on design specifications or implementation requirements, selectively implement some or all technical features in any embodiment, or selectively implement a combination of some or all technical features in multiple embodiments, thereby increasing the flexibility in implementing the present invention.

[0050] As used herein, the singular forms “a,” “an,” and “the” include plural objects, and the plural form “a plurality” includes two or more objects, unless otherwise expressly indicated. As used herein, the term “or” is generally used to include the meaning of “and / or,” unless otherwise expressly indicated, and the terms “install,” “connect,” and “link” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Connections can be mechanical or electrical. Connections can be direct or indirect through an intermediate medium, and can represent internal communication between two elements or an interaction between two elements. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] To make the objectives, advantages, and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clearly illustrate the objectives of the embodiments of the present invention. The same or similar reference numerals in the drawings represent the same or similar parts.

[0052] In this document, the terms "proximal" and "distal" refer to the relative orientation, position, or direction of components or actions relative to each other from the perspective of the operator using the medical device. Although "proximal" and "distal" are not restrictive, "proximal" generally refers to the end of the medical device that is closer to the operator during normal operation, while "distal" generally refers to the end that first enters the patient's body; that is, "proximal" is the end furthest from the patient, and "distal" is the end closest to the patient. The term "axial" refers to the direction that coincides with or is parallel to the central axis of the medical device; "radial" refers to the direction that is perpendicular to the central axis of the medical device.

[0053] <Example 1>

[0054] This embodiment provides a delivery device for delivering and releasing medical implants to a target location within a patient's body. The medical implants include, but are not limited to, medical stents, valve prostheses, and embolic coils.

[0055] Figure 1 A schematic diagram of the overall structure of the conveyor is shown. Figure 2 A schematic diagram of the structural appearance of the handle 1000 of the conveyor is shown. Figure 3 A schematic diagram of the handle 1000 with part of the housing omitted is shown.

[0056] Please refer to Figures 1 to 3 The delivery device includes a handle 1000 and a catheter assembly, wherein the catheter assembly may include an outer tube 2100 and an inner tube 2200 partially passing through the outer tube 2100, and the outer tube 2100 and the inner tube 2200 are capable of axial relative movement. One of the outer tube 2100 and the inner tube 2200 is a release tube, that is, when the medical implant is pressed between the outer tube 2100 and the inner tube 2200, the medical implant can be released by manipulating the release tube to move axially along the handle 1000. Specifically, when the outer tube 2100 is the release tube, the operator releases the medical implant by retracting the outer tube 2100 (i.e., moving the outer tube 2100 from distal to proximal). When the inner tube 2200 is the release tube, the operator releases the medical implant by pushing the inner tube 2200 (i.e., moving the inner tube 2200 from proximal to distal). Those skilled in the art will understand that the practitioner can also retrieve the medical implant by manipulating the release tube along the axial direction of the handle 1000. The following description uses the outer tube 2100 as the release tube as an example, but this should not be construed as limiting the scope of the invention.

[0057] The catheter assembly is used to load the medical implant and deliver it into the patient's body. A handle 1000 is connected to the proximal end of the catheter assembly and is used to control the catheter assembly to cause axial relative movement between the outer tube 2100 and the inner tube 2200, thereby releasing the medical implant at a target location within the patient's body. Specifically, the handle 1000 includes a housing 1110, a first drive unit 1120, and a limiting assembly. The first drive unit 1120 is preferably connected to the housing 1110 and is used to drive the outer tube 2100 to move axially relative to the inner tube 2200 to complete the release of the medical implant. The limiting assembly includes a first limiting mechanism 1310 and a second limiting mechanism 1320. The first limiting mechanism 1310 is partially disposed within the housing 1110 and can be connected to the inner wall of the housing 1110. It is configured to rotate about the axis of the outer tube 2100. It should be noted that the axis of the housing 1110 can coincide with the axis of the outer tube 2100. The second limiting mechanism 1320 is disposed within the housing and configured to move simultaneously with the outer tube 2100. In a preferred embodiment, the handle further includes the first connecting assembly, which is disposed within the housing 1110 and is throttle-connected to the first driving part 1120. It is also used to connect to the proximal end of the outer tube 2100. Thus, the first connecting assembly moves under the drive of the first driving part 1120, causing the outer tube 2100 to move axially relative to the inner tube 2200.

[0058] The handle 1000 is configured such that when the first drive unit 1120 drives the outer tube 2100 to move in a predetermined direction and the outer tube 2100 reaches a predetermined position, the first limiting mechanism 1310 and the second limiting mechanism 1320 cooperate to prevent the first drive unit 1120 from driving the outer tube 2100 to continue moving in the predetermined direction; when the first limiting mechanism 1310 rotates about the axis of the outer tube 2100 and the first limiting mechanism 1310 and the second limiting mechanism 1320 are disengaged, the first drive unit 1120 is allowed to drive the outer tube 2100 to continue moving in the predetermined direction. The predetermined direction is from the distal end to the proximal end.

[0059] In other words, before the delivery device is delivered into the body and before release begins, the first limiting mechanism 1310 and the second limiting mechanism 1320 are in a non-cooperative state. At this time, the first driving unit 1120 can drive the outer tube 2100 to move from the distal end to the proximal end and begin releasing the medical implant. For simplicity, the movement of the outer tube 2100 from the distal end to the proximal end will be referred to as retraction. When the outer tube 2100 moves to the predetermined position, the first limiting mechanism 1310 and the second limiting mechanism 1320 cooperate to pause the retraction of the outer tube 2100. At this time, the surgeon can perform other operations, such as adjusting the posture of the medical implant. After the surgeon completes the relevant operations, the cooperation between the first limiting mechanism 1310 and the second limiting mechanism 1320 can be released by rotating the first limiting mechanism 1310, thereby allowing the first driving unit 1120 to drive the outer tube 2100 to continue retraction. In this embodiment, by setting the limiting component and setting the predetermined position according to actual needs during assembly, the operator can pause and retract the outer tube 2100 at the predetermined position during operation, ensuring accurate operation and facilitating the smooth release of the medical implant.

[0060] It should be noted that the first drive unit 1120 can be a manual drive mechanism or an electric drive mechanism, and the embodiments of the present invention do not limit it in this regard.

[0061] Please refer to this carefully. Figures 3 to 6 In one exemplary embodiment, the first limiting mechanism 1310 includes a first positioning seat 1311 and a first limiting portion 1312. The first positioning seat 1311 is connected to the inner wall of the housing 1110 and is configured to rotate about the axis of the outer tube 2100. The first limiting portion 1312 is connected to the first positioning seat 1311 and at least partially protrudes from the distal end face of the first positioning seat 1311, and the first limiting portion 1312 moves synchronously with the first positioning seat 1311. The second limiting mechanism 1320 includes a second limiting portion 1321. The handle 1000 is configured such that, before the release of the medical implant begins, the second limiting portion 1321 is located on the distal side of the first limiting portion 1312, at least partially overlapping the first limiting portion 1312 circumferentially, and spaced axially from the first limiting portion 1312 by a predetermined distance (e.g., ...). Figure 4 (As shown); when the medical implant is released, the first driving part 1120 first drives the outer tube 2100 to retract a predetermined distance and bring the outer tube 2100 to the predetermined position, and causes the second limiting part 1321 to abut against the first limiting part 1312 (as shown). Figure 5As shown), so that the second limiting mechanism 1320 cooperates with the first limiting mechanism 1310, when the first positioning seat 1311 rotates about the axis of the outer tube 2100 and causes the first limiting part 1312 to be misaligned with the second limiting part 1321 in the circumferential direction (as shown). Figure 6 As shown), the second limiting mechanism 1320 disengages from the first limiting mechanism 1310. It can be understood that if the release tube is the inner tube, the predetermined direction is from the proximal end to the distal end, the first limiting part protrudes at least partially from the proximal end face of the first positioning seat, and the second limiting part is located on the proximal side of the first limiting part (not shown in the figure).

[0062] In this embodiment, the first positioning seat 1311 may be an annular structure with an inner hole. The first connecting component may pass through the inner hole and connect with the first driving part 1120. For ease of assembly, the first positioning seat 1311 may include two semi-circular positioning blocks spliced ​​together. Further, there are multiple first limiting parts 1312, which are arranged sequentially along the circumference of the first positioning seat 1311, and the length of the portion of the multiple first limiting parts 1312 protruding from the distal end face of the first positioning seat 1311 decreases sequentially along a first direction, thus the axial distance from each first limiting part 1312 to the second limiting part 1321 increases sequentially along the first direction. In this configuration, the handle 1000 is arranged such that when the first positioning seat 1311 rotates about the axis of the outer tube 2100 in a second direction and one of the first limiting portions 1312 is misaligned with the second limiting portion 1321 in the circumferential direction, the other first limiting portion 1312 can at least partially overlap with the second limiting portion 1321 in the circumferential direction. The second direction is opposite to the first direction; for example, if the first direction is clockwise, the second direction is correspondingly counterclockwise.

[0063] In practice, the rotation angle of the first positioning seat 1311 is determined based on the number of the first limiting parts 1312 and the distance between two adjacent first limiting parts 1312 in the circumferential direction of the first positioning seat 1311. In one embodiment, there are two first limiting parts (not shown in the figure), namely a first sub-limiting part and a second sub-limiting part. These two sub-limiting parts are arranged at intervals on the first positioning seat along the first direction, and the included angle between the two sub-limiting seats is Φ. When the first driving part drives the outer tube to retract, the second limiting part first abuts against the first sub-limiting part. At this time, the operator can rotate the first positioning seat around the axis of the outer tube in the second direction, and the rotation angle of the first positioning seat is Φ, so that the first sub-limiting part is offset from the second limiting part in the circumferential direction, and the second sub-limiting part at least partially overlaps the second limiting part in the circumferential direction. Thereafter, the first driving part can drive the outer tube to continue to retract until the second limiting part abuts against the second sub-limiting part. The practitioner can then rotate the first positioning seat again along the second direction to offset the second sub-limiting part from the second limiting part in the circumferential direction. It is understood that the number of the first limiting parts can also be three or more. For ease of description, the following description will always assume that the first limiting mechanism 1310 includes only one first limiting part 1312. However, those skilled in the art can modify the following description to adapt it to situations where the first limiting mechanism 1310 includes two or more first limiting parts 1312.

[0064] Preferably, the first limiting portion 1312 is movably connected to the first positioning seat 1311 and configured to move axially along the outer tube 2100, changing the length of the portion of the first limiting portion 1312 protruding from the distal end face of the first positioning seat 1311, thereby changing the predetermined distance between the first limiting portion and the second limiting portion. This arrangement allows the predetermined distance to be adjusted according to the specific type and size of the medical implant during assembly of the delivery device, enhancing the universal applicability of the delivery device. Optionally, the first positioning seat 1311 has a threaded hole extending through it axially, and the first limiting portion 1312 can be formed by a screw, which passes through the threaded hole. Using a screw to form the first limiting portion 1312 is advantageous because screw adjustment is simple and convenient, with a wide adjustment range. Even with large machining errors, compensation can be made by rotating the screw, ensuring effective limiting. A fastening screw can be used to fix the first limiting portion 1312, further improving reliability.

[0065] Furthermore, the housing 1110 is also provided with a first groove 1111 extending circumferentially therefrom. The first limiting mechanism 1310 also includes a first lever 1313, one end of which is connected to the first positioning seat 1311, and the other end passes through the first groove 1111 and extends out of the housing 1110. The first lever 1313 can be used to receive external force provided by the practitioner and drive the first positioning seat 1311 to rotate around the axis of the outer tube 2100, facilitating operation.

[0066] Furthermore, the first limiting mechanism 1310 also includes a first elastic sleeve 1314, which is fitted onto the first lever 1313, and preferably detachably fitted onto the first lever 1313. The outer wall of the first elastic sleeve 1314 contacts the groove wall of the first slide groove 1111, causing the first elastic sleeve 1314 to deform. That is, there is a compressive force between the first elastic sleeve 1314 and the groove wall of the first slide groove 1111, so that when the first lever 1313 moves under the action of external force to drive the first positioning seat 1311 to rotate, resistance is generated between the first elastic sleeve 1314 and the groove wall of the first slide groove 1111. The advantage of this design is that it enhances the operator's feel on the one hand, and on the other hand, it requires the operator to provide a certain amount of external force to move the first lever 1313, avoiding misoperation. The resistance of the first lever 1313 when moving can be adjusted by adjusting the size of the first elastic sleeve 1314, and the first elastic sleeve 1314 can be directly replaced after wear, making maintenance convenient.

[0067] When the first limiting mechanism 1310 includes only one first limiting part 1312, the specific position of the first slide groove 1111 and its circumferential length in the housing 1110 can be determined based on the circumferential dimensions of the first limiting part 1312 and the second limiting part 1321 in the housing 1110. Preferably, when the first lever 1313 is located at one end of the first slide groove 1111, the first limiting part 1312 at least partially overlaps with the second limiting part 1321 in the circumferential direction, while when the first lever 1313 is located at the other end of the first slide groove 1111, the first limiting part 1312 is offset from the second limiting part 1321 in the circumferential direction, which facilitates the determination of whether the first positioning seat 1311 has rotated into place and is simple to use.

[0068] In this embodiment, the first driving unit 1120 is, for example, a manual driving mechanism, and it is rotatably connected to the proximal end of the housing 1110. When the first driving unit 1120 rotates under the action of an external force, the first connecting assembly moves accordingly and drives the outer tube 2100 to move axially. To achieve this purpose, please refer to the reference. Figure 3 The first connecting assembly includes a threaded sleeve 1210 and a lead screw 1220. The outer wall of the threaded sleeve 1210 is connected to the inner wall of the first driving part 1120 (i.e., the threaded sleeve 1210 is located on the proximal side of the first positioning seat 1311) and can rotate synchronously with the first driving part 1120. The inner wall of the threaded sleeve 1210 is also provided with an internal thread. The distal end of the lead screw 1220 is connected to the outer tube 2100, and the second limiting mechanism 1320 is connected to the outer surface of the distal end of the lead screw 1220. The outer surface of the proximal end of the lead screw 1220 is provided with an external thread, which engages with the internal thread of the threaded sleeve 1210 to perform helical transmission. Alternatively, in an alternative embodiment, the inner wall of the first driving part has an internal thread, and the first connecting assembly only includes a lead screw. The external thread on the proximal end of the lead screw engages with the internal thread of the first driving part to perform helical transmission (not shown in the figure). It is understood that the lead screw 1220 can be integrally formed with the second limiting mechanism 1320, or they can be formed separately and then connected together.

[0069] The housing 1110 is also provided with an observation window 1113 extending along its axial direction. The operator can observe the movement of the lead screw 1220 through the observation window 1113, thereby knowing the movement of the outer tube 2100 and determining the direction and distance of the outer tube's movement. Furthermore, the lead screw 1220 can also be provided with scale lines, which are visible to the outside through the observation window 1113, so that the operator can monitor the movement distance of the outer tube 2100 in real time.

[0070] For further information, please refer back to the reference section. Figures 1 to 3 When the outer tube 2100 serves as the release tube, the handle 1000 preferably also includes a second drive portion 1130, which is arranged proximal to the first drive portion 1120. The proximal end of the inner tube 2200 extends from the proximal end of the outer tube 2100 and extends to the second drive portion 1130, and is directly or indirectly connected to the second drive portion 1130, so that the second drive portion 1130 can drive the inner tube 2200 to move axially under the action of external force.

[0071] Please refer to this carefully. Figure 3 and combined Figure 9In a non-limiting embodiment, the handle 1000 further includes a second connecting component and a third connecting component. The second connecting component is disposed within the housing 1110 and connected to the inner wall of the housing 1110. The third connecting component is partially disposed within the second drive portion 1130 and connected to the second drive portion 1130. The third connecting component is configured to rotate about the axis of the second drive portion 1130 and is used for selective connection with the second connecting component. The handle 1000 is configured such that when the third connecting assembly is connected to the second connecting assembly, the second drive portion 1130 remains axially stationary relative to the housing 1110 and the first drive portion 1120, and is prevented from driving the inner tube 2200 to move axially. When the third connecting assembly rotates about the axis of the second drive portion 1130 and disconnects from the second connecting assembly, the second drive portion 1130 is allowed to move under external force in a direction away from the housing 1110 and the first drive portion 1120, driving the inner tube 2200 to move from distal to proximal (i.e., driving the inner tube 2200 to retract). Thus, after the medical implant is released, the operator can disconnect the third connecting assembly from the second connecting assembly, and then move the second drive portion 1130 in a direction away from the housing 1110, thereby driving the inner tube 2200 to quickly retract back into the outer tube 2100, reducing adverse effects on the patient. The second drive unit 1130 can be manually driven by the practitioner or driven by an electric device.

[0072] Please refer to this carefully. Figures 7 to 9The second connecting assembly includes a second positioning seat 1410, a connecting tube 1420, and a third limiting portion 1430. The second positioning seat 1410 is connected to the inner wall of the housing 1110. The connecting tube 1420 is connected to the second positioning seat 1410, and its proximal end extends toward the second driving portion 1130. The third limiting portion 1430 is connected to the connecting tube 1420, preferably to its proximal end, and extends radially outward along the connecting tube 1420. Here, the third limiting portion 1430 extending radially outward along the connecting tube 1420 includes the case where the third limiting portion 1430 extends strictly radially, and also includes the case where it extends substantially radially, as long as the third limiting portion 1430 protrudes from the outer peripheral surface of the connecting tube 1420. The third connecting assembly includes a third positioning seat 1510, which is movably connected to the inner wall of the second driving part 1130 and configured to rotate about the axis of the second driving part 1130. The third positioning seat 1510 has a first central through hole 1511 and a recessed groove 1512. The first central through hole 1511 allows the proximal end of the connecting tube 1420 to pass through, and the recessed groove 1512 communicates with the first central through hole 1511 and allows the third limiting part 1430 to pass through.

[0073] When the third limiting part 1430 is located near the proximal end of the third positioning seat 1510 and is offset from the relief groove 1512 in the circumferential direction, and the third limiting part 1430 presses against the third positioning seat 1510, the third connecting assembly is connected to the second connecting assembly. At this time, the third limiting part 1430 and the third positioning seat 1510 limit each other to prevent the second driving part 1130 from moving axially under the action of external force, thus preventing the second driving part 1130 from driving the inner tube 2200 to move axially. When the third positioning seat 1510 rotates around the axis of the second driving part 1130 under the action of external force until the relief groove 1512 at least partially overlaps with the third limiting part 1430 in the circumferential direction, allowing the third limiting part 1430 to pass through, the third connecting assembly is disconnected from the second connecting assembly. At this point, the third limiting part 1430 and the third positioning seat 1510 are no longer mutually limiting, and no longer obstruct the movement of the second driving part 1130 from the distal end to the proximal end. Therefore, the practitioner can pull back the second driving part 1130 and drive the inner tube 2200 back, while the third positioning seat 1510 moves from the distal end to the proximal end, and the connecting tube 1420 and the third limiting part 1430 simultaneously pass through the third positioning seat 1510 and move to the distal end of the third positioning seat 1510.

[0074] It is understood that during the assembly of the conveyor, the proximal end of the inner tube 2200 passes through the first positioning seat 1311 and the connecting tube 1420 and is directly or indirectly connected to the second drive unit 1130.

[0075] In this embodiment, the shape and size of the recess 1512 preferably match the shape and size of the third limiting part 1430. Figure 8 and Figure 9 As shown in the example, both the third limiting portion 1430 and the relief groove 1512 are fan-shaped, and the size of the relief groove 1512 is slightly larger than the size of the third limiting portion 1430, so that the third limiting portion 1430 can pass through the relief groove 1512. In other embodiments, the shapes of the third limiting portion 1430 and the relief groove 1512 can also be square, irregular, etc. Furthermore, a guide surface (not shown in the figure) is formed on the distal end of the third limiting portion 1430, and the distance from the guide surface to the connecting tube 1420 gradually increases along the direction from the distal end to the proximal end, so that the third limiting portion 1430 can smoothly pass through the relief groove 1512.

[0076] Preferably, there are multiple third limiting portions 1430, which are evenly arranged circumferentially along the connecting tube 1420 to improve the force balance of the third positioning seat 1510 when the third connecting component and the second connecting component are connected, thereby increasing its service life. The number of relief grooves 1512 can be equal to the number of third limiting portions 1430, and the two are arranged correspondingly. Those skilled in the art will understand that the number and arrangement of the third limiting portions 1430 determine the rotation angle of the third positioning seat 1510 when the third connecting component and the second connecting component switch from a connected state to a non-connected state (i.e., the two are deconnected). For example, when there are two first limiting portions 1430, and the two third limiting portions 1430 are evenly arranged circumferentially along the connecting tube 1420, the third positioning seat 1510 can rotate 90° in a predetermined direction (clockwise or counterclockwise) to switch the third connecting component and the second connecting component from a connected state to a non-connected state.

[0077] For ease of operation, the second drive unit 1130 is provided with a third groove 1131 extending circumferentially along the position of the third positioning seat 1510. The third connecting assembly also includes a second lever 1520, one end of which is connected to the third positioning seat 1510, and the other end passes through the third groove 1131 and extends out of the second drive unit 1130 to receive external force applied by the practitioner and drive the third positioning seat 1510 to rotate. The position and length of the third slide groove 1131 (i.e., the circumferential dimension of the third slide groove 1131 in the second drive part 1130) are determined according to the number and arrangement of the third limiting parts 1430. However, usually when the third connecting component is connected to the second connecting component, the second lever 1520 is located at one end of the third slide groove 1131, and when the third connecting component is disconnected from the second connecting component, the second lever 1520 is located at the other end of the third slide groove, which facilitates the determination of whether the third positioning seat 1510 has rotated into place.

[0078] Furthermore, the third connecting assembly also includes a second elastic sleeve 1530. The first elastic sleeve 1530 is preferably detachably fitted onto the second lever 1520, and the outer wall of the second elastic sleeve 1530 contacts the groove wall of the third slide groove 1131, causing the second elastic sleeve 1530 to deform. In other words, there is a mutual compressive force between the second elastic sleeve 1530 and the groove wall of the third slide groove 1131. When the practitioner applies external force to move the second lever 1520 along the third slide groove 1131, resistance is generated between the second elastic sleeve 1530 and the groove wall of the third slide groove 1131. This resistance enhances the practitioner's feel and requires the practitioner to apply greater force to move the second lever 1520, thus preventing misoperation. The resistance during the movement of the second lever 1520 can be adjusted by adjusting the size of the second elastic sleeve 1530, and the second elastic sleeve 1520 can be directly replaced after wear, facilitating maintenance.

[0079] Furthermore, since the second positioning seat 1410 is connected to the housing 1110, the proximal end of the connecting tube 1420 needs to extend to the second driving part 1130, meaning the second connecting assembly spans the first driving part 1120. To avoid interference between the second connecting assembly and the connection between the first connecting assembly and the first driving part 1120, the structure of the second connecting assembly needs to be rationally designed. Please refer to [reference needed]. Figure 10The second positioning seat 1410 includes a first sub-positioning seat 1411, a connecting arm 1412, and a second sub-positioning seat 1413. The first sub-positioning seat 1411 is connected to the inner wall of the housing 1110. The two ends of the connecting arm 1412 are respectively connected to the first sub-positioning seat 1411 and the second sub-positioning seat 1413. The number of connecting arms 1412 is at least two, preferably two, and the two connecting arms 1412 are arranged circumferentially spaced along the first sub-positioning seat 1411. The connecting tube 1420 is connected to the proximal end face of the second sub-positioning seat 1413. Understandably, both the first sub-positioning seat 1411 and the second sub-positioning seat 1413 are provided with channels communicating with the inner cavity of the connecting tube 1413, so that the lead screw 1220 and the inner tube 2200 can pass through (specifically, the proximal end of the lead screw 1220 passes through the channel on the first sub-positioning seat 1411, and the proximal end of the inner tube 2200 passes through the channel on the second sub-positioning seat 1413) when assembling the conveyor, the external thread on the lead screw 1220 engages with the internal thread on the threaded sleeve 1210 (or on the inner wall of the first drive part 1120) through the gap between the two connecting arms 1412.

[0080] Preferably, the area of ​​the distal end face of the connecting tube 1420 is smaller than the area of ​​the proximal end face of the second sub-positioning seat 1413. Please refer to... Figure 9 The handle 1000 further includes an auxiliary assembly plate 1610, which is preferably circular in shape and has a circular third sliding groove on its distal end face. The auxiliary assembly plate 1610 is fitted onto the connecting tube 1420, and the distal end of the auxiliary assembly plate 1610 presses against the proximal end face of the second sub-positioning seat 1413. Simultaneously, the proximal end of the first driving part 1120 is inserted into the third sliding groove and can rotate along the third sliding groove under external force. When the third connecting assembly is connected to the second connecting assembly, the distal end of the second driving part 1130 presses against the proximal end face of the auxiliary assembly plate 1610. Alternatively, an annular groove matching the distal end of the second driving part 1130 can be provided on the proximal end face of the auxiliary assembly plate 1610.

[0081] Please continue to refer to this. Figure 7 and combined Figure 10The handle 1000 further includes a fourth connecting assembly, which is connected to the inner wall of the second drive portion 1130 and is also used to connect to the proximal end of the inner tube 2200 (i.e., the inner tube 2200 is indirectly connected to the second drive portion 1130 through the fourth connecting assembly). Optionally, the fourth connecting assembly includes an anti-rotation member 1710, which has a second central through hole 1711 through which the inner tube 2200 passes. The anti-rotation member 1710 includes a first anti-rotation portion 1712 and a second anti-rotation portion 1713. The first anti-rotation portion 1712 is connected to the inner wall of the second drive portion 1130 and is configured to remain circumferentially stationary with respect to the second drive portion 1130. The second anti-rotation portion 1713 is at least partially inserted into the inner cavity of the connecting tube 1420 and is configured to remain circumferentially stationary with respect to the connecting tube 1420. Specifically, both the first anti-rotation part 1712 and the second anti-rotation part 1713 have a non-rotational shape; for example, the cross-sections of both the first anti-rotation part 1712 and the second anti-rotation part 1713 are rectangular. The shape of the cross-section of at least a portion of the inner cavity of the connecting tube 1420 matches the shape of the second anti-rotation part 1713, that is, the cross-section of at least a portion of the inner cavity of the connecting tube 1420 is also rectangular. By providing the anti-rotation member 1710, the practitioner avoids rotation of the inner tube 2200 when pulling the second drive part 1130 to drive the inner tube 2200 to move from the distal end to the proximal end.

[0082] Furthermore, the proximal end of the inner tube 2200 passes through the second drive section 1130 and is connected to a Luer connector for connection to a syringe or other external device.

[0083] It should also be noted that, for ease of assembly of the conveyor, the housing 1110 is preferably a modular structure, including a first sub-housing and a second sub-housing. The first drive unit 1120 and the third drive unit 1130 are also modular structures. The first drive unit 1120 includes a third sub-housing and a fourth sub-housing, and the second drive unit 1130 includes a fifth sub-housing and a sixth sub-housing. Furthermore, the handle 1000 also includes a first fastening ring 1101 and a second fastening ring 1102 (e.g., ...). Figure 1 (As indicated). The first fastening ring 1101 is disposed between the housing 1110 and the first driving part 1120 to ensure a firm connection between the two. The second fastening ring 1102 is disposed near the end of the second driving part 1130 to ensure a firm connection between the fifth sub-housing and the sixth sub-housing.

[0084] It should also be noted that the conveyor provided in the embodiments of the present invention is provided with an empty pipe, and the arrangement of the empty pipe is in accordance with the prior art.

[0085] Furthermore, this embodiment also provides a handle, which is the handle 1000 as described above.

[0086] Furthermore, this embodiment also provides a medical device including a medical implant and the aforementioned delivery device, wherein the medical implant is loaded at the distal end of the catheter assembly and compressed within the space between the inner tube 2200 and the outer tube 2100.

[0087] <Example 2>

[0088] This embodiment provides a conveyor. The difference between this embodiment and Embodiment 1 is that the second limiting mechanism is connected to the release tube.

[0089] Furthermore, this embodiment also provides a medical device including a medical implant and the delivery device, wherein the medical implant is mounted on the distal end of the catheter assembly and compressed within the space between the outer tube mechanism and the inner tube mechanism.

[0090] While the present invention has been disclosed above, it is not limited thereto. Those skilled in the art can make various modifications and variations to the present invention without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, the present invention also intends to include such modifications and variations.

Claims

1. A handle for controlling a catheter assembly, the catheter assembly comprising an outer tube and an inner tube partially passing through the outer tube, wherein one of the outer tube and the inner tube is a release tube; characterized in that, The handle includes: case; A first driving unit is used to drive the release tube to move in a predetermined direction; and The limiting assembly includes a first limiting mechanism and a second limiting mechanism. The first limiting mechanism is partially disposed within and connected to the housing, and is configured to rotate about the axis of the release tube. The second limiting mechanism is disposed within the housing and is configured to move with the movement of the release tube. The handle is configured such that when the first driving unit drives the release tube to move in a predetermined direction and the release tube reaches a predetermined position, the first limiting mechanism and the second limiting mechanism cooperate to prevent the release tube from continuing to move in the predetermined direction; when the first limiting mechanism rotates about the axial direction of the release tube and the first limiting mechanism and the second limiting mechanism are disengaged, the first driving unit is allowed to drive the release tube to continue to move in the predetermined direction. The first limiting mechanism includes a first positioning seat and a first limiting portion; the first positioning seat is connected to the housing and configured to rotate about the axis of the release tube; the first limiting portion is connected to the first positioning seat and at least partially protrudes from a predetermined end face of the first positioning seat; the first limiting portion is configured to move axially along the release tube to change the length of the portion of the first limiting portion protruding from the predetermined end face of the first positioning seat; the second limiting mechanism includes a second limiting portion. The handle is configured such that the first limiting part and the second limiting part at least partially overlap in the circumferential direction, and when the first limiting part and the second limiting part abut against each other, the first limiting mechanism and the second limiting mechanism cooperate with each other. When the first positioning seat rotates around the axis of the release tube and causes the first limiting part to be misaligned with the second limiting part in the circumferential direction, the second limiting mechanism and the first limiting mechanism disengage.

2. The handle according to claim 1, characterized in that, The handle further includes a first connecting component disposed within the housing and drivenly connected to the first driving part, and also used for connecting to the proximal end of the release tube; the second limiting mechanism is connected to the first connecting component.

3. The handle according to claim 2, characterized in that, The first positioning seat is provided with a screw hole extending through the axial direction of the release tube, and the first limiting part is a screw rod, which passes through the screw hole.

4. The handle according to claim 2, characterized in that, The housing is provided with a first sliding groove extending circumferentially; the first limiting mechanism further includes a first lever, one end of which is connected to the first positioning seat, and the other end passes through the first sliding groove and extends out of the housing.

5. The handle according to claim 4, characterized in that, The first limiting mechanism further includes a first elastic sleeve, which is fitted onto the first lever, and the outer wall of the first elastic sleeve contacts the groove wall of the first slide groove, causing the first elastic sleeve to deform.

6. The handle according to any one of claims 2-5, characterized in that, The first positioning seat is an annular structure with an inner hole, and the proximal end of the first connecting component passes through the inner hole and is connected to the first driving part.

7. The handle according to claim 6, characterized in that, The number of the first limiting parts is multiple, and the multiple first limiting parts are arranged sequentially along the circumference of the first positioning seat. The length of the portion of each first limiting part protruding from the predetermined end face of the first positioning seat decreases sequentially along the first direction, so that the axial distance from each first limiting part to the second limiting part increases sequentially along the first direction. The handle is configured such that when the first positioning seat rotates about the axis of the release tube in a second direction and one of the first limiting portions is misaligned with the second limiting portion in the circumferential direction, the other first limiting portion can at least partially overlap with the second limiting portion in the circumferential direction. The second direction is opposite to the first direction.

8. The handle according to any one of claims 2-5, characterized in that, The first drive unit is rotatably connected to the proximal end of the housing; The inner wall of the first driving part is provided with an internal thread, the first connecting assembly includes a lead screw, the distal end of the lead screw is connected to the proximal end of the release tube, and the outer surface of the distal end of the lead screw is connected with a second limiting mechanism. The outer surface of the proximal end of the lead screw is provided with an external thread, which engages with the internal thread on the first driving part to perform helical transmission; or, The first connecting assembly includes a threaded sleeve and a lead screw. The threaded sleeve is connected to the inner wall of the first driving part and is configured to rotate synchronously with the first driving part. The inner wall of the threaded sleeve is provided with an internal thread. The distal end of the lead screw is connected to the proximal end of the release tube, and a second limiting mechanism is connected to the outer surface of the distal end of the lead screw. The outer surface of the proximal end of the lead screw is provided with an external thread, which cooperates with the internal thread on the threaded sleeve to perform helical transmission.

9. The handle according to claim 8, characterized in that, The housing is provided with an observation window for observing the movement of the lead screw.

10. The handle according to any one of claims 1-5, characterized in that, The release tube is the outer tube, and the predetermined direction is from the distal end to the proximal end; or... The release tube is the inner tube, and the predetermined direction is from the proximal end to the distal end.

11. A conveyor, characterized in that, The device includes a catheter assembly and a handle as described in any one of claims 1-10, the catheter assembly comprising an outer tube and an inner tube partially passing through the outer tube; the handle is connected to the proximal end of the catheter assembly and is used to control the catheter assembly to cause axial relative movement between the inner tube and the outer tube.

12. A medical device, characterized in that, It includes a medical implant and a delivery device as claimed in claim 11, wherein the medical implant is mounted on the distal end of the catheter assembly and compressed within the space between the outer tube and the inner tube.

13. A conveyor, characterized in that, The device includes a catheter assembly and a handle as described in claim 1, the catheter assembly including an outer tube and an inner tube partially passing through the outer tube, one of the outer tube and the inner tube being a release tube; the handle is connected to the proximal end of the catheter assembly and is used to control the release tube to move in a predetermined direction to cause axial relative movement between the inner tube and the outer tube; a second limiting mechanism is connected to the release tube.

14. A medical device, characterized in that, It includes a medical implant and a delivery device as described in claim 13, the medical implant being mounted at the distal end of the catheter assembly and compressed within the space between the outer tube and the inner tube.

Images