Conveying and releasing device and matching system with conveying and releasing device and part to be released

Abstract

The utility model relates to the technical field of medical instruments, and provides a conveying and releasing device and a matching system with the conveying and releasing device and a part to be released. The first release structure comprises a first release part and a rotating assembly, the rotating assembly is suitable for rotating to drive the first release part to reciprocate along the hollow cavity, and the first release part is suitable for driving the near end of the conveying part to move along the hollow cavity; the rear releasing structure comprises a rear releasing part and a blocking part, the rear releasing part is suitable for being arranged in the conveying channel, and when the pre-releasing part of the to-be-released part is folded in the conveying channel, the rear releasing wave band is connected with the blocking part in an inserted mode, the conveying and releasing device is high in conveying and releasing accuracy of the to-be-released part, meanwhile, the whole conveying and releasing device can be conveniently withdrawn, and the conveying and releasing efficiency is improved. The device is simple in structure and convenient to operate, the release mode of the pre-release part of the to-be-released part can release the first release wave band and the second release wave band in sequence, the instant impact force of the pre-release part on the blood vessel is reduced, and the safety of an operation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a delivery release device and a matching system with the delivery release device and a piece to be released. Background Art

[0002] The covered stent is a medical device for treating aortic diseases. It is mainly used for the treatment of aortic dissection, intramural hematoma of the aorta, aortic sinus rupture and other diseases. It is a stent coated with a special membrane material (polytetrafluoroethylene, polyester, polyester, polyurethane, etc.) on a metal stent. It not only retains the function of the metal stent, but also has the characteristics of the membrane material. During the operation, the covered stent is delivered to the aortic lesion site through the delivery system by cutting the femoral artery to protect the diseased blood vessels and repair the aortic lesions. Therefore, when the covered stent is released in the vascular segment that needs to be repaired, it needs to be coordinated with the delivery device. The specific operation is to first use the guide wire replacement technology to establish a surgical channel in the blood vessel, and then the delivery device carries the vascular stent along the guide wire into the blood vessel. Under the traction of the guide wire, the delivery device can pass through the iliac artery, abdominal aorta, thoracic aorta and other positions in turn with the vascular stent. After reaching the designated position, the delivery device releases the vascular stent to the lesion site to reshape the true lumen of the blood vessel. After the true lumen of the blood vessel is reshaped, the delivery device is withdrawn and the operation is completed.

[0003] The prior art discloses a stent delivery system, which makes the overall release structure more reliable through the structural design of its outer tube, rear release component, coated sleeve component and handle component and the connection structure design between these components. The use method of the delivery system provided by the utility model controls the outer tube, the coated sleeve component and the rear release component to release in sequence through the handle component, thereby realizing a gradual release process of coated sleeve release-stent initial release-stent complete release. However, the overall structure of the stent delivery system is relatively complex and inconvenient to operate. In addition, during the release of the stent, the bare segment at the distal end of the stent is directly and completely released, thereby causing a huge impact force on the blood vessels at the lesion, which may cause secondary damage to the blood vessels. In addition, the proximal end of the stent is also directly and synchronously released, which may also cause secondary damage to the blood vessels. Furthermore, the release process is also difficult to observe and inconvenient to use. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art that the overall structure of the stent delivery system is relatively complex and the operation is inconvenient. In the process of releasing the stent, the bare segment at the distal end of the stent is directly and completely released, which will cause a huge impact force on the blood vessels at the lesion, causing secondary damage to the blood vessels. In addition, the proximal end of the stent is also directly and synchronously released, which will also cause secondary damage to the blood vessels. Furthermore, the release process is also difficult to observe and inconvenient to use, so a delivery and release device and a matching system between the delivery and release device and the part to be released are provided.

[0005] A delivery release device, comprising: a delivery member, the delivery member having a delivery channel with two ends being open, a to-be-released member being suitable for being folded in the delivery channel, and the to-be-released member comprising a coating body and a pre-release portion, the pre-release portion being arranged at the distal end of the coating body, the pre-release portion being not coated, the pre-release portion comprising a first-release band and a rear-release band arranged at intervals, the proximal end of the coating body comprising a proximal wave ring, the proximal wave ring comprising a first-release wave chord and a rear-release wave chord arranged at intervals, the amplitude of the first-release wave chord being smaller than the amplitude of the rear-release wave chord;

[0006] The first release structure is suitable for releasing the first release band of the pre-release part, and the first release structure includes a first release member and a rotating assembly, wherein the rotating assembly has a hollow cavity with two ends being open, the first release member is arranged in the hollow cavity, and is connected to the proximal end of the conveying member, and the distal end of the conveying member is located outside the hollow cavity, and the rotating assembly is suitable for rotating to drive the first release member to reciprocate along the hollow cavity and the first release member is suitable for driving the proximal end of the conveying member to move along the hollow cavity; the rear release structure is suitable for the rear release of the pre-release part The rear release structure comprises a rear release member and a blocking member, wherein the rear release member is suitable for being arranged in the conveying channel, and the distal end of the rear release member is located inside the member to be released, and the proximal end of the rear release member is suitable for extending along the conveying member to the proximal end of the conveying release device, and the proximal end of the blocking member is connected with the distal end of the member to be released, and when the pre-release portion of the member to be released is retracted in the conveying channel, the rear release band is plugged into the blocking member; the conveying release device has the rotating assembly being suitable for rotating under the action of external force to drive The first release member is driven to move along the hollow cavity toward the proximal end of the hollow cavity, so as to drive the proximal end of the conveying member to move synchronously toward the proximal end of the hollow cavity. When the pre-release portion escapes from the distal end of the conveying channel, the first release band expands, and the blocking member is suitable for applying a blocking force to the rear release band to block the expansion of the rear release band. When the conveying release device is in the first release state, the rotating assembly continues to rotate under the action of an external force to drive the conveying member to move toward the proximal end, so that the coating body Each of the first-release wave chords of the proximal wave ring at the proximal end is released from the conveying channel of the conveying member before each of the rear-release wave chords, so as to fully release the coating body to a fully released state, and when the conveying release device is in the fully released state, the rear-release member is suitable for driving the blocking member to move along the member to be released toward the proximal end, so that the blocking member withdraws from the rear-release band to release the rear-release state in which the blocking member applies a blocking force to the rear-release band. In the rear-release state, the member to be released completes the release of the pre-release portion.

[0007] Optionally, in the above-mentioned conveying and releasing device, the rotating assembly includes a rotating member and a rotating matching member that are rotatably connected, wherein the rotating matching member and the rotating member both have a sub-hollow cavity with openings at both ends and coaxially arranged, and the two sub-hollow cavities form the hollow cavity, the first release member is arranged in the sub-hollow cavity of the rotating member, and the distal end of the rotating member extends into the sub-hollow cavity of the rotating matching member; a threaded groove is arranged on the inner wall surface of the sub-hollow cavity of the rotating member, and a threaded surface matching the threaded groove is arranged on the outer wall surface of the first release member. ; and at least one guide block is arranged on the inner wall surface of the sub-hollow cavity of the rotating matching member, and a guide block guide groove corresponding to the guide block is arranged on at least a portion of the outer wall surface of the distal end of the rotating member extending into the sub-hollow cavity of the rotating matching member. When subjected to external force, the rotating member is suitable for rotational movement relative to the rotating matching member so that the guide block at the distal end of the rotating member rotates and moves along the corresponding guide block guide groove to prevent the axial movement of the rotating member relative to the rotating matching member, and to make the first release member suitable for axial movement along the sub-hollow cavity of the rotating member.

[0008] Optionally, in the above-mentioned delivery release device, the first release structure further comprises at least one stopper, the distal end of each stopper is fixedly arranged on the rotating matching member, and the proximal end is suitable for extending out of the sub-hollow cavity of the rotating member to be fixedly arranged;

[0009] A limiting guide groove corresponding to the limiting member is provided on the main body of the first releasing member along the axial direction of the first releasing member. When the first releasing member moves along the hollow cavity of the rotating assembly, the first releasing member is suitable for moving relative to the limiting member.

[0010] Optionally, the above-mentioned conveying and releasing device also includes a fixing assembly, which includes a first fixing member and a second fixing member, the first fixing member is arranged in the sub-hollow cavity of the rotating matching member, the second fixing member is arranged at the proximal end of the rotating member, and the distal end of the second fixing member is rotatably connected to the proximal end of the rotating member.

[0011] Optionally, in the above-mentioned conveying release device, a stabilizing sleeve is further provided on the first release member, the proximal end of the conveying member is suitable for passing through the stabilizing sleeve to extend to the proximal end of the conveying release device, and the outer wall surface of the conveying member is pressed against the inner wall surface of the stabilizing sleeve.

[0012] Optionally, in the above-mentioned conveying and releasing device, the conveying member includes a first tube and a second tube, and the distal end of the first tube extends into the proximal end of the second tube; the stabilizing sleeve includes a first stabilizing tube and a second stabilizing tube, the first tube is sleeved in the first stabilizing tube, the first stabilizing tube is suitable for being inserted into the second stabilizing tube, and the second tube is sleeved in the second stabilizing tube.

[0013] Optionally, in the above-mentioned conveying and releasing device, the outer wall surface of the first stabilizing tube is arranged in the form of an inclined surface, and the inner wall surface of the second stabilizing tube has a matching inclined surface adapted to the inclined surface.

[0014] Optionally, in the above-mentioned conveying and releasing device, the blocking member includes a blocking portion corresponding one to the rear release band, the proximal end of the blocking portion is connected to the distal end of the rear release member and is located on one side of the rear release band, and the distal end of the blocking portion is located on the other side of the rear release band.

[0015] Optionally, in the above-mentioned conveying and releasing device, the blocking part is a rod-shaped structure, and all the blocking parts are configured in the same manner.

[0016] Optionally, in the above-mentioned conveying and releasing device, the rear release structure also includes a guide tube, which is located in the conveying channel of the conveying member, and the guide tube has a guide channel, the proximal end of the rear release member is located in the guide channel, and extends along the guide channel to the distal end of the conveying and releasing device, and is connected to the second fixing member.

[0017] Optionally, in the above-mentioned conveying and releasing device, the rear release structure further includes a rear release driving member connected to the proximal end of the rear release member, and under the action of external force, the rear release driving member is suitable for driving the rear release member to move along the guide channel.

[0018] Optionally, in the above-mentioned conveying and releasing device, the rear release structure also includes a fixed seat, which is arranged at the proximal end of the second fixing member, and a guide channel is opened on the body of the fixed seat, and when the rear release driving member drives the rear release member to move, the rear release driving member is suitable for moving along the guide channel.

[0019] Optionally, in the above-mentioned conveying release device, the rear release structure also includes a guide assembly, which is arranged at the distal end of the conveying member, and the guide assembly includes a guide member, and each blocking part of the blocking member is suitable for abutting against the guide member, and when the conveying release device is in the rear release state, the guide member is separated from the each blocking part of the blocking member.

[0020] Optionally, in the above-mentioned conveying and releasing device, the guide assembly further includes a pullback member, the pullback member is connected to the proximal end of the guide member, the rear release member has a pullback channel, and under the action of external force, the pullback member is suitable for moving along the pullback channel.

[0021] Optionally, the above-mentioned conveying and releasing device also includes a locking member, which is at least arranged at the connection between the rotating member and the rotating matching member, and the locking member has a locking portion, and a plurality of locking matching grooves are arranged on the rotating member. When the locking portion of the locking member is located in one of the locking matching grooves, the locking member applies a locking force to the rotating member to make the rotating matching member cooperate with the rotating member and prevent the rotating member from rotating relative to the rotating matching member; when the locking portion of the locking member exits the locking matching groove, the rotating member is allowed to rotate relative to the rotating matching member.

[0022] Optionally, in the above-mentioned conveying and releasing device, a movable groove is provided on the rotating fitting member, and the locking member is suitable for moving along the movable groove so that the locking portion enters or exits the locking fitting groove.

[0023] Optionally, in the above-mentioned conveying and releasing device, at least one observation portion is provided on the main body of the rotating member, and the observation portion is transparent.

[0024] A matching system of a conveying release device and a piece to be released, comprising:

[0025] A to-be-released member, wherein the distal end of the to-be-released member has a pre-release portion, the pre-release portion is not coated, and the pre-release portion comprises a first-release band and a second-release band that are spaced apart;

[0026] The conveying release device is the conveying release device as described above, wherein the member to be released is suitable for being retracted into the conveying channel of the conveying member in the conveying release device.

[0027] The technical solution of this utility model has the following advantages:

[0028] 1. The utility model provides a conveying and releasing device, comprising: a conveying member, the conveying member having a conveying channel with two ends being open, the member to be released is suitable for being retracted in the conveying channel, and the member to be released comprises a coating body and a pre-release portion, the pre-release portion is arranged at the distal end of the coating body, the pre-release portion is not coated, the pre-release portion comprises a first-release band and a rear-release band arranged at intervals, the proximal end of the coating body comprises a proximal wave ring, the proximal wave ring comprises a first-release wave chord and a rear-release wave chord arranged at intervals, the amplitude of the first-release wave chord is smaller than the amplitude of the rear-release wave chord; a first-release structure is suitable for releasing the first-release band of the pre-release portion, the first-release structure comprises a first-release member and a rotary The rotary assembly comprises a hollow cavity with openings at both ends, the first release member is arranged in the hollow cavity and connected to the proximal end of the conveying member, the distal end of the conveying member is located outside the hollow cavity, the rotary assembly is suitable for rotating to drive the first release member to reciprocate along the hollow cavity and the first release member is suitable for driving the proximal end of the conveying member to move along the hollow cavity; the rear release structure is suitable for releasing the rear release band of the pre-release portion, the rear release structure comprises a rear release member and a blocking member, the rear release member is suitable for being arranged in the conveying channel, and the distal end of the rear release member is located inside the member to be released, and the proximal end of the rear release member is suitable for extending along the conveying member to the conveying release band. The proximal end of the device, the proximal end of the blocking member is connected to the distal end of the member to be released, and when the pre-release portion of the member to be released is retracted in the conveying channel, the rear release band is plugged into the blocking member; the conveying release device has a rotating assembly that is suitable for rotating under the action of external force to drive the first release member to move along the hollow cavity toward the proximal end of the hollow cavity, so as to drive the proximal end of the conveying member to move synchronously toward the proximal end of the hollow cavity, when the pre-release portion escapes from the distal end of the conveying channel, the first release band expands, and the blocking member is suitable for applying a blocking force to the rear release band to block the expansion of the rear release band in the first release state, and when the conveying release device is in the In the first release state, under the action of external force, the rotating component continues to rotate to drive the conveying member to move toward the proximal end, so that the first release chords of the proximal wave ring at the proximal end of the coating body are released from the conveying channel of the conveying member before the rear release chords, so as to fully release the coating body to the full release state, and when the conveying release device is in the full release state, the rear release member is suitable for driving the blocking member to move along the to-be-released member toward the proximal end, so that the blocking member withdraws from the rear release band, so as to release the rear release state in which the blocking member applies a blocking force to the rear release band. In the rear release state, the to-be-released member completes the release of the pre-release portion.

[0029] The conveying and releasing device of this structure includes a conveying member, a first-release structure and a rear-release structure, wherein the conveying member has a conveying channel with openings at both ends, the member to be released is gathered in the conveying channel, and the distal end of the member to be released has a pre-release portion, the pre-release portion is not coated, the pre-release portion includes a first-release band and a rear-release band arranged at intervals, the first-release structure is used to release the first-release band of the pre-release portion, the first-release structure includes a first-release member and a rotating component, wherein the rotating component has a hollow cavity with openings at both ends, the first-release member is arranged in the hollow cavity, and is connected to the proximal end of the conveying member, the distal end of the conveying member is located outside the hollow cavity, the rotating component is suitable for rotating to drive the first-release member to reciprocate along the hollow cavity and the first-release member The invention is suitable for driving the proximal end of the conveying member to move along the hollow cavity, thereby completing the release of the conveying member to the first release band of the pre-release part of the member to be released, and utilizing the rear release structure to release the rear release band of the pre-release part, wherein the rear release structure comprises a rear release member and a blocking member, wherein the rear release member is arranged in the conveying channel, and the distal end of the rear release member is located inside the member to be released, the proximal end of the rear release member is suitable for extending along the conveying member to the proximal end of the conveying release device, the proximal end of the blocking member is connected with the distal end of the member to be released, and when the pre-release part of the member to be released is retracted in the conveying channel, the rear release band is plugged into the blocking member, and in actual use, the conveying release device has a rotating component that is suitable for rotating under the action of external force to drive the first release member to move along the hollow cavity toward the proximal end of the hollow cavity. , to drive the proximal end of the conveying member to move synchronously toward the proximal end of the hollow cavity. When the pre-release portion escapes from the distal end of the conveying channel, the first release band expands, and the blocking member is suitable for applying a blocking force to the rear release band to block the expansion of the rear release band in the first release state. In this first release state, the first release of the first release band of the pre-release portion of the member to be released is completed, and then on the basis of completing the first release of the first release band, that is, when the conveying release device is in the first release state, external force is continued to be applied to the rotating component, and the rotating component continues to rotate to drive the conveying member to continue to move toward the proximal end, so that each first release wave chord of the proximal end wave ring of the proximal end of the coating body is released from the conveying channel of the conveying member before each rear release wave chord, so as to fully release the coating body. The conveying and releasing device is in the fully released state, thereby completing the full release of the coating body, and when the conveying and releasing device is in the fully released state, a force is applied to the rear releasing member, so that the rear releasing member can drive the blocking member to move proximally along the member to be released, so that the blocking member can withdraw from the rear releasing band, so as to release the blocking force applied by the blocking member to the rear releasing band, thereby making the conveying and releasing device in the rear releasing state. In the rear releasing state, the member to be released completes the release of the pre-release part, and then the conveying member, the first releasing structure and the rear releasing structure are uniformly withdrawn to complete the full release of the member to be released and the effect of stably implanting it into the lesion. The conveying and releasing device has high accuracy in conveying and releasing the member to be released, and at the same time facilitates the withdrawal of the entire conveying and releasing device, and is easy to operate.Moreover, the release method of the pre-release part of the to-be-released component can release the first-release band and the second-release band successively, reducing the instantaneous impact force of the pre-release part on the blood vessel, ensuring the safety of the operation, and when releasing the coated body, the first-release wave chord and the second-release wave chord of the proximal wave coil at the proximal end of the coated body are also released successively, avoiding the situation where the proximal wave coil at the proximal end directly escapes from the delivery channel and causes damage to the blood vessel. The delivery release device achieves the effect of stably releasing the to-be-released component to the lesion while avoiding secondary damage to the blood vessel.

[0030] 2. In the conveying and releasing device provided by the utility model, the rotating assembly includes a rotating member and a rotating matching member which are rotatably connected, wherein the rotating matching member and the rotating member both have a sub-hollow cavity with openings at both ends and coaxially arranged, and the two sub-hollow cavities form the hollow cavity, the first release member is arranged in the sub-hollow cavity of the rotating member, and the distal end of the rotating member extends into the sub-hollow cavity of the rotating matching member; a threaded groove is arranged on the inner wall surface of the sub-hollow cavity of the rotating member, and a threaded groove adapted to the threaded groove is arranged on the outer wall surface of the first release member A grooved surface; and at least one guide block is arranged on the inner wall surface of the sub-hollow cavity of the rotating matching member, and a guide block guide groove corresponding to the guide block is arranged on at least a portion of the outer wall surface of the distal end of the rotating member extending into the sub-hollow cavity of the rotating matching member. When subjected to external force, the rotating member is suitable for rotational movement relative to the rotating matching member so that the guide block at the distal end of the rotating member rotates and moves along the corresponding guide block guide groove to prevent the axial movement of the rotating member relative to the rotating matching member, and to make the first release member suitable for axial movement along the sub-hollow cavity of the rotating member.

[0031] In the conveying and releasing device of this structure, the rotating assembly is arranged as a rotating member and a rotating matching member which are rotatably connected, and then the rotating matching member and the rotating member both have sub-hollow cavities with openings at both ends and coaxially arranged, and the two sub-hollow cavities form the hollow cavity of the rotating assembly, the first release member is arranged in the sub-hollow cavity of the rotating member, and the distal end of the rotating member extends into the sub-hollow cavity of the rotating matching member, a thread groove is arranged on the inner wall surface of the sub-hollow cavity of the rotating member, and a thread surface matching the thread groove is arranged on the outer wall surface of the first release member, and at least one guide block is arranged on the inner wall surface of the sub-hollow cavity of the rotating matching member, and a one-to-one contact with the guide block is arranged on at least a portion of the outer wall surface of the distal end of the rotating member extending into the sub-hollow cavity of the rotating matching member. Corresponding guide block and guide groove, when external force is applied to the rotating part, the rotating part will rotate relative to the rotating matching part, and since a guide block is provided at the far end of the rotating part, the guide block will rotate along the guide block guide groove, thereby preventing the rotating part from making axial relative movement relative to the rotating matching part. At the same time, the first release part and the rotating part are threadedly connected. Therefore, during the rotation of the rotating part, the first release part can make axial movement relative to the rotating part along the sub-hollow cavity of the rotating part, thereby driving the first release part to drive the proximal end of the conveying part to move along the hollow cavity, thereby completing the release of the conveying part to the pre-release band of the pre-release part of the part to be released. This driving method is stable and easy to operate, and further improves the release stability of the part to be released.

[0032] 3. In the conveying and releasing device provided by the present invention, at least one observation portion is provided on the body of the rotating member, and the observation portion is transparent.

[0033] In the conveying and releasing device of this structure, at least one observation portion is provided on the main body of the rotating member, and the observation portion is transparent, so that the operation is easy to observe, and the problem of difficulty in observation and inconvenience in use during the release process is further overcome. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 This is a schematic diagram of the overall structure of the delivery and release device provided in the first embodiment of the utility model;

[0036] Figure 2 It is a schematic diagram of the position structure of the conveying member, the guide tube, the rear release member and the guide member;

[0037] Figure 3 for Figure 2 The schematic diagram of the axial cross-sectional structure of the conveying member and the guide tube, the rear release member and the guide member shown;

[0038] Figure 4 It is a schematic diagram of the connection structure between the rear release driving member and the pull-back member, and between the rear release member and the guide member and the conveying member;

[0039] Figure 5 It is a schematic diagram of the connection structure between the rotating member and the rotating matching member and the second fixing member and the fixing seat;

[0040] Figure 6 for Figure 4 Schematic diagram of the axial cross-section structure;

[0041] Figure 7 It is a schematic diagram of the position structure of the to-be-released member and the blocking member;

[0042] Figure 8 It is a schematic diagram of the position structure in which both the to-be-released member and the blocking member are arranged in the conveying member;

[0043] Fig. 9 It is a schematic diagram of the position structure of the blocking member and the rear release band when the first release band of the member to be released is released;

[0044] Fig.10 A schematic diagram of the position structure of another angle between the blocking member and the rear release band when the first release band of the member to be released is released;

[0045] Fig.11 is a schematic diagram of the structure of the first release member;

[0046] Fig.12 Schematic diagram of the explosion structure for stabilizing the casing;

[0047] Fig.13 A schematic diagram of a structure in which a moving groove is provided on a rotating mating part;

[0048] Fig.14 It is a schematic diagram of the position structure of the thread groove on the inner wall surface of the rotating part and the guide block on the outer wall surface;

[0049] Fig.15 It is a structural schematic diagram of a guide channel provided on a fixed seat;

[0050] Fig.16 A schematic diagram of the structure of the member to be released completing the release of the pre-release portion at the lesion;

[0051] Fig.17 It is a schematic diagram of the structure of the rotating part, the rotating matching part and the locking part;

[0052] Fig.18 is a schematic diagram of the structure of the locking member;

[0053] Fig.19 It is a schematic diagram of the position structure of the locking part and the locking matching groove;

[0054] Fig. 20 for Figure 3 A is an enlarged schematic diagram;

[0055] Fig.21 for Figure 3 The enlarged schematic diagram of point B in FIG.

[0056] Fig. 22 for Figure 3 The enlarged schematic diagram of point C in FIG.

[0057] Fig.23 for Figure 3 The enlarged schematic diagram of D in FIG.

[0058] Fig.24 for Figure 3 The enlarged schematic diagram of point E in FIG.

[0059] Fig.25 for Fig.24 The enlarged schematic diagram of G in FIG.

[0060] Fig.26 for Figure 3 The enlarged schematic diagram of F in FIG.

[0061] Fig. 27 It is a schematic diagram of the position structure of the first release member, the limit member and the fixing members at both ends;

[0062] Fig.28 is a schematic diagram of the structure of the part to be released;

[0063] Fig.29 Schematic diagram of the explosion structure of the anti-accidental collision part and the fixing seat;

[0064] Fig.30 A schematic diagram of the position structure of the anti-accidental collision member abutting against the rear release driving member when the anti-accidental collision portion and the anti-accidental collision matching portion are in the first abutting position;

[0065] Fig.31 It is another structural schematic diagram of a round base;

[0066] Fig.32 It is a schematic diagram of the exploded structure of the liquid guide member, the second fixing member and the guide tube;

[0067] Description of reference numerals:

[0068] 100, conveying member; 101, conveying channel; 102, first tube; 103, second tube;

[0069] 200, a to-be-released component; 201, a pre-release component; 2011, a first-release band; 2012, a second-release band;

[0070] 202, coating body; 2021, releasing the wave string first; 2022, releasing the wave string later;

[0071] 300, first release structure; 301, first release member; 3011, limit guide groove;

[0072] 302, rotating assembly; 3021, rotating member; 3022, rotating matching member; 3023, thread groove; 3024, thread surface; 3025, guide block; 3026, guide block guide groove;

[0073] 303, limiter;

[0074] 304, guide tube; 3041, guide channel; 3042, liquid guide channel;

[0075] 305. Observation Department;

[0076] 400, rear release structure;

[0077] 401, rear release member; 402, blocking member; 4021, blocking portion;

[0078] 403, rear release drive member;

[0079] 404, guide assembly; 4041, pull-back member; 4042, guide member;

[0080] 405, fixing seat; 4051, guide channel; 4052, through hole; 4053, anti-accidental collision part;

[0081] 500, fixing assembly; 501, first fixing member; 502, second fixing member;

[0082] 503, stabilizing sleeve; 5031, first stabilizing tube; 5032, second stabilizing tube;

[0083] 504, liquid guide member; 5041, liquid guide hole;

[0084] 600, locking member; 601, locking portion;

[0085] 701, locking matching groove; 703, moving groove;

[0086] 800, anti-accidental collision part; 801, anti-accidental collision matching part; 802, anti-accidental collision end; 803, anti-accidental collision matching end. DETAILED DESCRIPTION

[0087] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0088] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0089] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0091] It should be noted that the distal end and the proximal end in the present invention are relative to the operator. The distal end is the end away from the operator, that is, the end close to the lesion, and the proximal end is the end close to the operator, that is, the end away from the lesion.

[0092] Example 1

[0093] This embodiment describes a delivery release device, see Figure 1-Figure 27The delivery release device includes a delivery member 100, a first release structure 300 and a rear release structure 400. The delivery member 100, the first release structure 300 and the rear release structure 400 are used to accurately release the member to be released 200, including the release of the pre-release portion 201 at the far end of the member to be released 200 and the release of the member to be released 200 as a whole. The delivery member 100 has a delivery channel 101 with two ends being open. When the member to be released 200 is not released, the member to be released 200 is retracted in the delivery channel 101. The member to be released 200 includes a coating body 202 and a pre-release portion 201 disposed at the far end of the coating body 202, and the pre-release portion 201 is not coated. See Figure 7-10 as well as Fig.28 The pre-release portion 201 includes a plurality of first-release bands 2011 and a rear-release band 2012 that are spaced apart. The first-release structure 300 is used to release the first-release band 2011 of the pre-release portion 201. The proximal end of the coating body 202 includes a proximal wave ring, and the proximal wave ring includes a first-release wave chord 2021 and a rear-release wave chord 2022 that are spaced apart. The amplitude of the first-release wave chord 2021 is set to be smaller than the amplitude of the rear-release wave chord 2022.

[0094] Specifically, the first release structure 300 includes a first release member 301 and a rotating assembly 302, wherein the rotating assembly 302 has a hollow cavity with two ends being open, the first release member 301 is arranged in the hollow cavity, and the first release member 301 is connected to the proximal end of the conveying member 100, and the distal end of the conveying member 100 is located outside the hollow cavity, and a rotational force is applied to the rotating assembly 302 so that the rotating assembly 302 rotates to drive the first release member 301 to reciprocate along the hollow cavity. During the reciprocating movement, the first release member 301 can drive the proximal end of the conveying member 100 to move along the hollow cavity, and the first release member 301 can further drive the proximal end of the conveying member 100 to move along the hollow cavity. The rear release structure 400 releases the rear release band 2012 of the pre-release portion 201. The rear release structure 400 includes a rear release member 401 and a blocking member 402. The rear release member 401 is arranged in the conveying channel 101, and the proximal end of the rear release member 401 extends toward the proximal end of the conveying release device. The distal end of the rear release member 401 is arranged inside the to-be-released member 200. The proximal end of the blocking member 402 is connected to the distal end of the to-be-released member 200. When the pre-release portion 201 of the to-be-released member 200 is retracted in the conveying channel 101, the rear release band 2012 is plugged into the blocking member 402.

[0095] In the specific operation, the release operation of the release member 200 is as follows: first, the first release band 2011 of the pre-release portion 201 of the release member 200 is released. After the release of the first release band 2011 is completed, the rotating assembly 302 is continued to be operated to gradually release the distal end to the proximal end of the coating body 202. In the process of gradual release, the first release wave chord of the proximal wave ring at the proximal end of the coating body is released from the conveying channel before the rear release wave chord. When the first release wave chord and the rear release wave chord of the proximal wave ring are released, the first release wave chord and the rear release wave chord of the proximal wave ring are released from the conveying channel. After all the release strings are released from the conveying channel, the rear release band 2012 of the pre-release part at the distal end of the coating body is released, and finally the entirety of the part to be released 200 is released. This can be summarized as: a gradual release process of pre-release of the first release band at the distal end of the part to be released - pre-release of the first release string at the proximal end of the part to be released - complete release of the rear release string at the proximal end of the part to be released - complete release of the rear release band at the distal end of the part to be released, which makes each step of the release of the part to be released safer and more reliable.

[0096] In actual use, the delivery release device has a rotating assembly 302 that is suitable for rotating under the action of external force to drive the first release member 301 to move along the hollow cavity toward the proximal end of the hollow cavity, so as to drive the proximal end of the delivery member 100 to move synchronously toward the proximal end of the hollow cavity. When the pre-release portion 201 is output from the distal end of the delivery channel 101, the first release band 2011 expands, and the blocking member 402 is suitable for applying a blocking force to the rear release band 2012 to block the expansion of the rear release band 2012. In this first release state, the first release band 201 of the pre-release portion 201 of the to-be-released member 200 is completed. 1, and then, on the basis of completing the first release of the first release band 2011, that is, when the delivery release device is in the first release state, continue to apply external force to the rotating component to make the rotating component continue to rotate to drive the delivery member to continue to move toward the proximal end, so that each first release wave chord of the proximal end wave ring of the proximal end of the coating body is released from the delivery channel of the delivery member before each rear release wave chord, so as to fully release the coating body, and when the delivery release device is in the full release state, apply force to the rear release member 401, so that the rear release member 401 can drive the blocking member 402 along the to-be-released member 200 The transport release device is in a post-release state. In this post-release state, the member 200 to be released completes the release of the pre-release portion 201, and then the transport member 100, the pre-release structure 300 and the post-release structure 400 are uniformly withdrawn to complete the release of the member 200 to be released and the effect of stably implanting the member 200 into the lesion. The transport release device has high accuracy in transporting and releasing the member 200 to be released, and is convenient for the overall transport release device. The device can be withdrawn easily, and the operation is convenient. The release method of the pre-release part 201 of the part to be released 200 can release the first release band 2011 and the second release band 2012 successively, and in the interval operation of releasing the first release band 2011 and the second release band 2012 successively, the first release wave chord and the second release wave chord of the proximal wave coil at the proximal end of the coating body are released successively, thereby reducing the instantaneous impact force of the pre-release part 201 and the proximal wave coil on the blood vessel, ensuring the safety of the operation, and achieving the effect of stably releasing the part to be released 200 to the lesion while avoiding secondary damage to the blood vessel.

[0097] In order to operate the rotating component 302 stably and thus realize the stable release of the part 200 to be released, the rotating component 302 in this embodiment includes a rotating part 3021 and a rotating matching part 3022 that are rotatably connected, wherein the rotating matching part 3022 and the rotating part 3021 both have sub-hollow cavities that are open at both ends and coaxially arranged, and the two sub-hollow cavities form the above-mentioned hollow cavity, and the sub-hollow cavities of the rotating part 3021 and the rotating matching part 3022 are respectively defined as the first sub-hollow cavity and the second sub-hollow cavity, and the first release part 301 is arranged in the first sub-hollow cavity of the rotating part 3021, and the distal end of the rotating part 3021 extends into the second sub-hollow cavity of the rotating matching part 3022.

[0098] Then, a thread groove 3023 is provided on the inner wall surface of the first sub-hollow cavity of the rotating member 3021, and correspondingly, a thread surface 3024 adapted to the thread groove 3023 is provided on the outer wall surface of the first release member 301, and at least one guide block 3025 is provided on the inner wall surface of the sub-hollow cavity of the rotating matching member 3022, and a guide block guide groove 3026 corresponding to the guide block 3025 is provided on at least a portion of the outer wall surface of the second sub-hollow cavity of the rotating matching member 3022 extending from the distal end of the rotating member 3021. 025 is arranged in the guide block guide groove 3026 to apply a rotational force to the rotating member 3021. Under the action of the external force of the rotational force, the rotating member 3021 can rotate relative to the rotating matching member 3022 so that the guide block 3025 at the far end of the rotating member 3021 can rotate and move along the corresponding guide block guide groove 3026, thereby preventing the axial movement of the rotating member 3021 relative to the rotating matching member 3022, and further enabling the first release member 301 to be suitable for axial movement along the sub-hollow cavity of the rotating member 3021.

[0099] When external force is applied to the rotating member 3021, the rotating member 3021 will rotate relative to the rotating matching member 3022. Since a guide block 3025 is provided at the far end of the rotating member 3021, the guide block 3025 will rotate along the guide block guide groove 3026, thereby preventing the rotating member 3021 from performing axial relative movement relative to the rotating matching member 3022. At the same time, the first release member 301 and the rotating member 3021 are threadedly connected. Therefore, during the rotation of the rotating member 3021, the first release member 301 can perform axial movement along the sub-hollow cavity of the rotating member 3021 relative to the rotating member 3021, thereby driving the first release member 301 to drive the proximal end of the conveying member 100 to move along the hollow cavity, thereby completing the release of the first release band 2011 of the pre-release portion 201 of the member 200 to be released by the conveying member 100. This driving method is stable and easy to operate, and further improves the release stability of the member 200 to be released.

[0100] In order to further ensure that the first release member 301 can perform stable axial movement along the first sub-hollow cavity of the rotating member 3021, the first release structure 300 in the above-mentioned conveying and releasing device also includes at least one limiting member 303, the distal end of each limiting member 303 is fixedly set on the rotating matching member 3022, and the proximal end is suitable for extending out of the first sub-hollow cavity of the rotating member 3021 for fixed setting, and along the axial direction of the first release member 301, a limiting guide groove 3011 corresponding to the limiting member 303 is opened on the body of the first release member 301, and the limiting member 303 is passed through the limiting guide groove 3011. When the first release member 301 moves along the hollow cavity of the rotating component 302, the first release member 301 can also move relative to the limiting member 303.

[0101] The above-mentioned limiting member 303 can be set as a flat structure, and the number of the limiting members 303 is set to two.

[0102] In order to stably set the limit member 303 in the conveying and releasing device, the conveying and releasing device in this embodiment also includes a fixing component 500, which includes a first fixing component 501 and a second fixing component 502. The first fixing component 501 is set in the second sub-hollow cavity of the rotating matching component 3022, and the second fixing component 502 is set at the proximal end of the rotating component 3021, and the distal end of the second fixing component 502 is rotatably connected to the proximal end of the rotating component 3021. The distal end of the limit member 303 is connected to the first fixing component 501, and the proximal end of the limit member 303 is connected to the second fixing component 502. When the rotating component 3021 rotates relative to the rotating matching component 3022, the rotating component 3021 will also rotate relative to the second fixing component 502.

[0103] The proximal end of the rotating member 3021 can be rotatably connected to the distal end of the second fixed member 502, and a guide block 3025 can also be set on the outer wall surface of the second fixed member 502. Correspondingly, a guide block guide groove 3026 is set on the inner wall surface of the first sub-hollow cavity of the rotating member 3021. The guide block 3025 and the guide block guide groove 3026 are set in a one-to-one correspondence. During the rotation of the rotating member 3021 relative to the second fixed member 502, the guide block guide groove 3026 and the guide block 3025 perform relative rotational movement.

[0104] The guide block 3025 and the guide block guide groove 3026 in this embodiment are both arranged perpendicular to the axial direction of the conveying member 100 .

[0105] In the conveying and releasing device in this embodiment, a stabilizing sleeve 503 can also be provided on the first releasing member 301. The stabilizing sleeve 503 also has a cavity with openings at both ends. The proximal end of the conveying member 100 is suitable for passing through the cavity of the stabilizing sleeve 503 to extend toward the proximal end of the conveying and releasing device, and the outer wall surface of the conveying member 100 is pressed against the inner wall surface of the cavity of the stabilizing sleeve 503, thereby enabling the conveying member 100 to be stably placed on the first releasing member 301.

[0106] In order to facilitate the installation of the conveying member 100 and the first release member 301, see Fig.23 The above-mentioned conveying member 100 can include a first tube 102 and a second tube 103, and the distal end of the first tube 102 is extended into the proximal end of the second tube 103, and the stabilizing sleeve 503 includes a first stabilizing tube 5031 and a second stabilizing tube 5032. The first tube 102 is sleeved in the first stabilizing tube 5031, and the first stabilizing tube 5031 is suitable for being inserted into the second stabilizing tube 5032. The second tube 103 is sleeved in the second stabilizing tube 5032, thereby completing the installation of the conveying member 100 and the first release member 301. The installation method is simple. In actual use, the outer wall surface of the first stabilizing tube 5031 can be set as an inclined surface, and correspondingly, the inner wall surface of the second stabilizing tube 5032 can have a matching inclined surface adapted to the inclined surface, thereby the first stabilizing tube 5031 and the second stabilizing tube 5032 can be stably installed.

[0107] In order to better enable the blocking member 402 to block and release the rear release band 2012 of the pre-release portion 201, see Figure 7-10 The blocking member 402 in this embodiment includes a blocking portion 4021 corresponding to the rear release band 2012 one by one, and the proximal end of the blocking portion 4021 is connected to the distal end of the rear release member 401 and the proximal end of the blocking portion 4021 is arranged on one side of the rear release band 2012, and the distal end of the blocking portion 4021 is located on the other side of the rear release band 2012, so that each blocking portion 4021 is plugged into the corresponding rear release band 2012, completing the plugging of the blocking member 402 and the rear release band 2012. When the rear release band 2012 needs to be released, a force is applied to the rear release member 401 to move axially toward the proximal end of the conveying release device, and the blocking portion 4021 can be gradually withdrawn from the rear release band 2012, thereby completing the release of the rear release band 2012, and then completing the complete release of the pre-release portion 201 of the member 200 to be released.

[0108] In actual use, each of the above-mentioned blocking parts 4021 can be a rod-shaped structure, and all the blocking parts 4021 are configured in the same manner, see Fig.25The rear release member 401 in this embodiment can be provided in two parts, with the proximal end of one part extending into the distal end of the other part, thereby forming the rear release member 401. Of course, it can also be provided in an integral molding.

[0109] In order to complete the stable release of the rear release band 2012 when the rear release member 401 retreats, the rear release structure 400 in this embodiment also includes a guide tube 304, which is arranged in the conveying channel 101 of the conveying member 100, and the guide tube 304 has a guide channel 3041, and the proximal end of the rear release member 401 is arranged in the guide channel 3041, and will extend along the guide channel 3041 to the distal end of the conveying release device, and is connected to the second fixing member 502, and the outer diameter of the rear release member 401 is less than or equal to the inner diameter of the guide channel 3041, and is preferably slightly smaller than the inner diameter of the guide channel 3041.

[0110] During the process of the rear release member 401 retreating, the rear release member 401 can retreat along the guide channel 3041 of the guide tube 304, thereby driving the blocking portion 4021 of the blocking member 402 to withdraw from the rear release band 2012, thereby completing the release of the rear release band 2012 by the blocking member 402.

[0111] In order to more conveniently apply a retraction force to the rear release member 401, the rear release structure 400 in this embodiment also includes a rear release driving member 403 connected to the proximal end of the rear release member 401. Under the action of external force, the rear release driving member 403 is suitable for driving the rear release member 401 to move along the guide channel 3041. In actual use, the rear release driving member 403 can adopt a columnar structure, and force-applying parts are provided at both ends of the columnar structure. External force is applied to the force-applying part, and then the rear release driving member 403 is driven to approach and move away from the second fixing member 502, so as to drive the rear release member 401 to move along the guide channel 3041.

[0112] In this embodiment, in order to facilitate the operator to inject the drug solution into the lesion, see Fig.32 A liquid guiding member 504 may also be provided in the second fixing member 502, and a liquid guiding hole 5041 may be provided on the liquid guiding member 504, and an avoidance groove may be provided on the second fixing member 502 corresponding to the liquid guiding hole 5041, and then a plurality of liquid guiding channels 3042 may be provided in the axial direction of the main body of the guide tube 304, and the liquid guiding channels 3042 may be connected to the liquid guiding hole 5041, and liquid medicine may be injected into the liquid guiding channels 3042 through the liquid guiding hole 5041 on the liquid guiding member 504, and the liquid medicine may be output from the guide tube 304 along the liquid guiding channel 3042 and flow into the conveying member 100 and continue to flow toward the distal end of the conveying member 100, and finally flow to the lesion.

[0113] The rear release structure 400 in this embodiment also includes a fixing seat 405, which is arranged at the proximal end of the second fixing member 502 and is connected to the second fixing member 502. A guide channel 4051 is opened on the body of the fixing seat 405. When the rear release driving member 403 moves along the driving rear release member 401, the rear release driving member 403 is suitable for moving along the guide channel 4051.

[0114] See also Fig.15 The fixed seat 405 in this embodiment includes two semicircular seats that are butt-jointed, and a groove structure is provided at the joint of the two semicircular seats. After the two semicircular seats are butt-jointed and installed, the two groove structures can be butt-jointed to form the above-mentioned guide channel 4051, and the columnar structure of the rear release drive member 403 is located in the cavity formed by the two semicircular seats, and then the two force-applying parts are located outside the semicircular seats, so as to facilitate the application of force to the rear release drive member 403.

[0115] In order to avoid the situation that the rear release driving member 403 is accidentally hit and causes the rear release member 401 to retreat, driving the blocking portion 4021 of the blocking member 402 to accidentally withdraw from the rear release band 2012, an anti-accidental collision member 800 can also be provided on the rear release driving member 403, and a through hole 4052 is provided on the fixed seat 405. The anti-accidental collision member 800 can be rotatably arranged relative to the through hole 4052, and the anti-accidental collision end 802 of the anti-accidental collision member 800 passes through the through hole 4052 to extend into the interior of the two semicircular seats and extend toward the rear release driving member 403, and the other end remains outside the fixed seat 405, and an anti-accidental collision portion 4053 is provided on the inner wall surface of the through hole 4052, and correspondingly, an anti-accidental collision matching portion 801 is provided on the anti-accidental collision member 800. The through hole 4052 is rotatably arranged, so that the anti-accidental collision part 4053 can be rotated relative to the anti-accidental collision matching part 801 to a first abutting position and a separated second position. When the anti-accidental collision part 4053 and the anti-accidental collision matching part 801 are located at the first position, the anti-accidental collision end 802 of the anti-accidental collision part 800 will abut against the anti-accidental collision matching end 803 of the rear release drive member 403, thereby blocking the rear release drive member 403 from moving relative to the guide channel 4051. When the anti-accidental collision part 4053 and the anti-accidental collision matching part 801 are rotated and switched from the first position to the second position, the anti-accidental collision end 802 will also rotate, at this time giving way to the anti-accidental collision matching end 803 of the rear release drive member 403, so that the rear release drive member 403 can move relative to the guide channel 4051.

[0116] During specific use, referring to the figure, a groove can be opened on the end of the rear-release driving member 403 close to the anti-accidental collision member 800, and the main body of the groove is the anti-accidental collision matching end 803. The above-mentioned anti-accidental collision end 802 is plate-shaped. Along the moving direction of the rear-release driving member 403, part of the projection of the anti-accidental collision end 802 in the moving direction falls into the groove structure, and part is located outside the groove structure, thereby achieving blocking and giving way to the anti-accidental collision matching end 803 of the rear-release driving member 403.

[0117] It should be noted that the anti-accidental collision matching portion 801 and the anti-accidental collision portion 4053 in this embodiment are tooth-shaped portions that cooperate with each other.

[0118] In order to facilitate the smooth delivery of the overall structure of the delivery release device in the blood vessel, the rear release structure 400 in this embodiment also includes a guide component 404, which is arranged at the distal end of the delivery member 100, and the distal end of the guide component 404 is located outside the delivery channel 101 of the delivery member 100. The guide component 404 includes a guide member 4042, and each blocking portion 4021 of the blocking member 402 is abutted against the guide member 4042. When the delivery release device is in the rear release state, the guide member 4042 is separated from the each blocking portion 4021 of the blocking member 402.

[0119] See also Fig. 9 The guide member 4042 includes a tapered portion and a connecting portion, the connecting portion is connected to the tapered portion, and then when the member 200 to be released is in a completely unreleased state, the connecting portion is arranged in the conveying channel 101 of the conveying member 100, and the tapered portion is arranged outside the conveying channel 101 of the conveying member 100, and then the blocking portions 4021 of the blocking member 402 abut against the outer peripheral wall surface of the connecting portion, and when the conveying release component is first intervened into the blood vessel, the tapered portion will pre-expand the blood vessel when the conveying member 100 is conveyed in the blood vessel, so as to facilitate the smooth delivery of the overall structure of the conveying release device in the blood vessel.

[0120] The guide assembly 404 in this embodiment also includes a pullback member 4041, which is used to apply a retraction force to the guide frame. The rear release member 401 has a pullback channel, and then the distal end of the pullback member 4041 is connected to the proximal end of the guide member 4042. The proximal end of the pullback member 4041 extends along the pullback channel to the proximal end of the conveying release device and passes through the above-mentioned fixed seat 405. After the to-be-released member 200 completes the overall release, the pullback member 4041 is able to move along the pullback channel under the action of external force, thereby carrying the guide member 4042 to withdraw from the blood vessel along the cavity of the to-be-released member 200 that has been released.

[0121] The end of the fixing seat 405 in this embodiment is provided with a round base, and the round base and the two semicircular seats form a fixing seat with a cylindrical structure, see 1, and a nut end can be provided on the round base, as another convertible embodiment, see Fig.31 , wing-shaped ends can also be provided on the round base.

[0122] It should be noted that after the release member 200 is released as a whole, all components located in the blood vessel withdraw from the blood vessel. The pullback member 4041 in this embodiment is configured as a rod-shaped structure, and the conveying member 100 and the guide tube 304 can also be configured as a tubular structure.

[0123] In order to prevent the rotating member 3021 from rotating relative to the rotating matching member 3022 during the release process of the post-release band 2012 of the released member 200, causing the conveying member 100 to continue to move toward the proximal end, thereby causing part of the released member 200 to be released to be released, the conveying release device in this embodiment also includes a locking member 600. A locking member 600 can be arranged at the connection between the rotating member 3021 and the rotating matching member 3022, and a part of the locking member 600 is arranged in the second sub-hollow cavity of the rotating matching member 3022. The locking member 600 has a locking portion 601, and a plurality of locking matching grooves 701 are arranged on the rotating member 3021 at a position corresponding to the locking member 600. When the locking portion 601 of 600 is located in one of the locking fitting grooves 701, the locking member 600 applies a locking force to the rotating member 3021 to make the rotating fitting member 3022 cooperate with the rotating member 3021, and prevents the rotating member 3021 from rotating relative to the rotating fitting member 3022. At this time, the rotating member 3021 will no longer rotate relative to the rotating fitting member 3022, avoiding accidental touch by the operator. When subjected to external force, the locking portion 601 of the locking member 600 can withdraw from the locking fitting groove 701. When the locking portion 601 can withdraw from the locking fitting groove 701, the rotating member 3021 is allowed to rotate relative to the rotating fitting member 3022, and the entirety of the member 200 to be released continues to be released.

[0124] In this embodiment, a movable groove 703 may be provided on the rotating fitting member 3022 , and under the action of external force, the locking member 600 can reciprocate along the movable groove 703 so that the locking portion 601 enters or exits the locking fitting groove 701 .

[0125] See also Fig.18The locking member 600 in this embodiment includes a first half ring and a second half ring, and the ends of the first half ring and the second half ring are both provided with plug-in parts. The first half ring and the second half ring are plugged in accordingly to complete the installation of the locking member 600. It should be noted that the locking member 600 is sleeved on the outer peripheral wall surface of the second sub-hollow cavity of the rotating member 3021 extending into the rotating matching member 3022, and a locking portion 601 can be provided on at least one of the above-mentioned first half ring and the second half ring.

[0126] See also Fig.14 The rotating member 3021 in this embodiment includes a first section and a second section that are coaxially arranged. The second section extends into the second sub-hollow cavity of the rotating matching member 3022. The first section is located outside the second sub-hollow cavity of the rotating matching member 3022, and the outer diameter of the first section is greater than the outer diameter of the second section. The above-mentioned locking fitting groove 701 is opened at the intersection of the first section and the second section, and is arranged on the end of the first section. All the locking fitting grooves 701 are suitable for being arranged around the outer peripheral wall of the second section.

[0127] In order to better apply force to the locking member 600 , the two half rings of the locking member 600 also have force applying parts, which are located outside the moving groove 703 , that is, outside the rotating matching member 3022 .

[0128] In order to be able to observe the movement of the conveying member 100 along the blood vessel in real time, at least one observation portion 305 can be opened on the main body of the rotating member 3021. The observation portion 305 is transparent. By setting a transparent observation portion 305 on the main body of the rotating member 3021, the moving distance of the first release member 301 can be observed in real time, thereby confirming the moving distance of the conveying member 100 along the blood vessel, further overcoming the problem of difficulty in observation and inconvenience in use during the release process.

[0129] A distance marking ruler may also be provided on the side of the observation portion 305 to further confirm the moving distance of the conveyor 100 during movement, which is convenient for use.

[0130] The conveying release device in this embodiment can first release the first release band 2011 of the pre-release part 201 of the released member 200, and then continuously release the first release wave chord and the post-release wave chord of the coating body 202, and then perform post-release on the post-release band 2012, thereby completing the release of the pre-release part 201 and the release of the coating body, and finally withdraw the conveying member 100, the post-release structure 400 and the guide component 404 from the blood vessel.

[0131] Embodiment 2:

[0132] The present embodiment records a coordination system of a conveying and releasing device and a piece to be released 200, comprising a piece to be released 200 and a conveying and releasing device, wherein the distal end of the piece to be released 200 has a pre-release portion 201, and the pre-release portion 201 is not coated, that is, the pre-release portion 201 is a bare segment, and the pre-release portion 201 comprises a first release band 2011 and a rear release band 2012 which are arranged at intervals, and in actual use, the amplitude of the above-mentioned rear release band 2012 is less than or equal to the amplitude of the first release band 2011, and the amplitude of the rear release band 2012 in the present embodiment is equal to the amplitude of the first release band 2011, and the conveying and releasing device is the conveying and releasing device as described in Example 1, wherein the piece to be released 200 is suitable for being retracted in the conveying channel 101 of the conveying piece 100 in the conveying and releasing device.

[0133] The matching system in this embodiment adopts the conveying and releasing device in Example 1, and therefore has all the beneficial effects of the above-mentioned conveying and releasing device, and the matching system is easy to operate and can stably and accurately release the part 200 to be released.

[0134] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A conveying and releasing device, characterized in that: include: A conveying member (100), wherein the conveying member (100) has a conveying channel (101) with two ends being open, a to-be-released member (200) being adapted to be folded in the conveying channel (101), and the to-be-released member (200) comprising a coating body (202) and a pre-release portion (201), wherein the pre-release portion (201) is arranged at the distal end of the coating body (202), the pre-release portion (201) is not coated, the pre-release portion (201) comprises a first-release band (2011) and a rear-release band (2012) arranged at intervals, the proximal end of the coating body comprises a proximal wave ring, the proximal wave ring comprises a first-release wave chord and a rear-release wave chord arranged at intervals, the amplitude of the first-release wave chord being smaller than the amplitude of the rear-release wave chord; A first release structure (300) is suitable for releasing the first release band (2011) of the pre-release portion (201), the first release structure (300) comprising a first release member (301) and a rotating assembly (302), wherein the rotating assembly (302) has a hollow cavity with two ends being open, the first release member (301) is arranged in the hollow cavity and connected to the proximal end of the conveying member (100), the distal end of the conveying member (100) is located outside the hollow cavity, the rotating assembly (302) is suitable for rotating to drive the first release member (301) to reciprocate along the hollow cavity, and the first release member (301) is suitable for driving the proximal end of the conveying member (100) to move along the hollow cavity; A rear release structure (400) is suitable for releasing the rear release band (2012) of the pre-release portion (201), and the rear release structure (400) comprises a rear release member (401) and a blocking member (402), wherein the rear release member (401) is suitable for being arranged in the conveying channel (101), and the distal end of the rear release member (401) is located inside the to-be-released member (200), and the proximal end of the rear release member (401) is suitable for extending along the conveying member (100) to the proximal end of the conveying release device, and the proximal end of the blocking member (402) is connected to the distal end of the to-be-released member (200), and when the pre-release portion (201) of the to-be-released member (200) is retracted in the conveying channel (101), the rear release band (2012) is plugged into the blocking member (402); The conveying release device has a first release state in which the rotating component (302) is suitable for rotating under the action of external force to drive the first release component (301) to move along the hollow cavity toward the proximal end of the hollow cavity, so as to drive the proximal end of the conveying component (100) to move synchronously toward the proximal end of the hollow cavity; when the pre-release portion (201) escapes from the distal end of the conveying channel (101), the first release band (2011) expands, and the blocking component (402) is suitable for applying a blocking force to the rear release band (2012) to block the expansion of the rear release band (2012); and when the conveying release device is in the first release state, under the action of external force, the rotating component (302) continues to rotate to drive the conveying component (100) toward the proximal end Movement so that each of the first-release wave chords of the proximal wave ring at the proximal end of the coating body (202) is released from the conveying channel (101) of the conveying member (100) before each of the rear-release wave chords, so that the coating body (202) is fully released in a fully released state, and when the conveying release device is in the fully released state, the rear-release member (401) is suitable for driving the blocking member (402) to move along the to-be-released member (200) toward the proximal end, so that the blocking member (402) withdraws from the rear-release band (2012), so as to release the blocking member (402) from applying a blocking force to the rear-release band (2012), and in the rear-release state, the to-be-released member (200) completes the release of the pre-release portion (201).

2. The delivery and release device according to claim 1, characterized in that: The rotating assembly (302) comprises a rotating member (3021) and a rotating matching member (3022) which are rotatably connected, wherein the rotating matching member (3022) and the rotating member (3021) both have sub-hollow cavities with openings at both ends and arranged coaxially, and the two sub-hollow cavities form the hollow cavity, the first release member (301) is arranged in the sub-hollow cavity of the rotating member (3021), and the distal end of the rotating member (3021) extends into the sub-hollow cavity of the rotating matching member (3022); A thread groove (3023) is provided on the inner wall surface of the sub-hollow cavity of the rotating member (3021), and a thread surface (3024) adapted to the thread groove (3023) is provided on the outer wall surface of the first release member (301); and at least one guide block (3025) is provided on the inner wall surface of the sub-hollow cavity of the rotating matching member (3022), and a thread surface (3024) adapted to the guide block (3025) is provided on at least a portion of the outer wall surface of the sub-hollow cavity of the rotating matching member (3022) extending from the distal end of the rotating member (3021). 5) corresponding guide block guide grooves (3026), under the action of external force, the rotating member (3021) is suitable for rotating relative to the rotating matching member (3022) so that the guide block (3025) at the far end of the rotating member (3021) rotates and moves along the corresponding guide block guide groove (3026), so as to prevent the axial movement of the rotating member (3021) relative to the rotating matching member (3022), and make the first release member (301) suitable for axial movement along the sub-hollow cavity of the rotating member (3021).

3. The delivery and release device according to claim 2, characterized in that: The first release structure (300) further comprises at least one stopper (303), the distal end of each stopper (303) being fixedly arranged on the rotating matching member (3022), and the proximal end being adapted to extend out of the sub-hollow cavity of the rotating member (3021) for fixed arrangement; A limiting guide groove (3011) corresponding to the limiting member (303) is provided on the body of the first releasing member (301) along the axial direction of the first releasing member (301), so that when the first releasing member (301) moves along the hollow cavity of the rotating assembly (302), the first releasing member (301) is suitable for moving relative to the limiting member (303).

4. The delivery and release device according to claim 3, characterized in that: It also includes a fixing assembly (500), which includes a first fixing member (501) and a second fixing member (502), wherein the first fixing member (501) is arranged in the sub-hollow cavity of the rotating matching member (3022), and the second fixing member (502) is arranged at the proximal end of the rotating member (3021), and the distal end of the second fixing member (502) is rotatably connected to the proximal end of the rotating member (3021).

5. The delivery and release device according to claim 4, characterized in that: A stabilizing sleeve (503) is also provided on the first release member (301), and the proximal end of the conveying member (100) is suitable for passing through the stabilizing sleeve (503) to extend toward the proximal end of the conveying release device, and the outer wall surface of the conveying member (100) is pressed against the inner wall surface of the stabilizing sleeve (503).

6. The delivery and release device according to claim 5, characterized in that: The conveying member (100) comprises a first tube (102) and a second tube (103), and the distal end of the first tube (102) extends into the proximal end of the second tube (103); the stabilizing sleeve (503) comprises a first stabilizing tube (5031) and a second stabilizing tube (5032), the first tube (102) is sleeved in the first stabilizing tube (5031), the first stabilizing tube (5031) is suitable for being plugged into the second stabilizing tube (5032), and the second tube (103) is sleeved in the second stabilizing tube (5032).

7. The delivery and release device according to claim 6, characterized in that: The outer wall surface of the first stabilizing tube (5031) is arranged in the form of an inclined surface, and the inner wall surface of the second stabilizing tube (5032) has a matching inclined surface adapted to the inclined surface.

8. The delivery and release device according to any one of claims 1 to 7, characterized in that: The blocking member (402) includes a blocking portion (4021) corresponding one-to-one to the rear release band (2012), the proximal end of the blocking portion (4021) is connected to the distal end of the rear release member (401) and is located on one side of the rear release band (2012), and the distal end of the blocking portion (4021) is located on the other side of the rear release band (2012).

9. The delivery and release device according to claim 8, characterized in that: The blocking portion (4021) is a rod-shaped structure, and all the blocking portions (4021) are configured in the same manner.

10. The delivery and release device according to any one of claims 4 to 7, characterized in that: The rear release structure (400) also includes a guide tube (304), which is located in the conveying channel (101) of the conveying member (100), and the guide tube (304) has a guide channel (3041). The proximal end of the rear release member (401) is located in the guide channel (3041), and extends along the guide channel (3041) to the distal end of the conveying release device, and is connected to the second fixing member (502).

11. The delivery release device according to claim 10, characterized in that: The rear release structure (400) further comprises a rear release driving member (403) connected to the proximal end of the rear release member (401), and under the action of external force, the rear release driving member (403) is suitable for driving the rear release member (401) to move along the guide channel (3041).

12. The delivery release device according to claim 11, characterized in that: The rear release structure (400) also includes a fixing seat (405), which is arranged at the proximal end of the second fixing member (502), and a guide channel (4051) is opened on the body of the fixing seat (405). When the rear release driving member (403) drives the rear release member (401) to move, the rear release driving member (403) is suitable for moving along the guide channel (4051).

13. The delivery and release device according to any one of claims 2 to 7, characterized in that: The rear release structure (400) also includes a guide assembly (404), which is arranged at the distal end of the conveying member (100). The guide assembly (404) includes a guide member (4042). Each blocking portion (4021) of the blocking member (402) is suitable for abutting against the guide member (4042). When the conveying release device is in the rear release state, the guide member (4042) is separated from each blocking portion (4021) of the blocking member (402).

14. The delivery release device according to claim 13, characterized in that: The guide assembly (404) further includes a pullback member (4041), which is connected to the proximal end of the guide member (4042). The rear release member (401) has a pullback channel. Under the action of external force, the pullback member (4041) is suitable for moving along the pullback channel.

15. The delivery release device according to claim 13, characterized in that: The invention also comprises a locking member (600), wherein at least one locking member (600) is arranged at the connection between the rotating member (3021) and the rotating matching member (3022), the locking member (600) having a locking portion (601), and a plurality of locking matching grooves (701) are arranged on the rotating member (3021). When the locking portion (601) of the locking member (600) is located in one of the locking matching grooves (701), the locking member (600) is (600) applies a locking force to the rotating member (3021) to make the rotating matching member (3022) match with the rotating member (3021) and prevent the rotating member (3021) from rotating relative to the rotating matching member (3022); when the locking portion (601) of the locking member (600) withdraws from the locking matching groove (701), the rotating member (3021) is allowed to rotate relative to the rotating matching member (3022).

16. The delivery release device according to claim 15, characterized in that: A moving groove (703) is provided on the rotating fitting member (3022), and the locking member (600) is adapted to move along the moving groove (703) so that the locking portion (601) enters or exits the locking fitting groove (701).

17. The delivery and release device according to any one of claims 2 to 7, characterized in that: At least one observation portion (305) is provided on the body of the rotating member (3021), and the observation portion (305) is transparent.

18. A system for cooperating a delivery release device with a piece to be released (200), characterized in that: include: A to-be-released member (200), wherein the distal end of the to-be-released member (200) has a pre-release portion (201), the pre-release portion (201) is not coated, and the pre-release portion (201) comprises a first-release band (2011) and a second-release band (2012) that are arranged at intervals; The conveying release device is a conveying release device as claimed in any one of claims 1 to 17, wherein the member to be released (200) is suitable for being retracted into a conveying channel (101) of a conveying member (100) in the conveying release device.

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