Anchor hook assembly and anchor hook ejection device

Abstract

The application relates to an anchor hook ejection device, which comprises a sleeve, a pushing rod and an ejection part. The sleeve is internally provided with a pushing channel for accommodating an anchor hook. The pushing rod comprises an abutting table installed in the sleeve. The ejection part comprises a telescopic piece installed in the pushing channel and in contact with the abutting table. The ejection part is provided with an ejection block for pushing the telescopic piece and a control piece for pulling the ejection block. The sleeve, the pushing rod, the ejection part and the telescopic piece clamped between the pushing rod and the ejection part jointly form the ejection device. The device has simple structure and is easy to produce and manufacture. Furthermore, the structure formed after the sleeve is connected with the pushing rod effectively improves the stability of the ejection block during ejection, ensures that the anchor nail can be reliably and stably ejected to the distal end in the sleeve, and only needs to remove the force on the control piece during use to complete anchor nail launching. Moreover, the device has the advantages of good operability for the implement personnel in the field.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of surgical medical instruments, and particularly relates to an anchor hook assembly and an anchor hook ejection device. BACKGROUND

[0002] Heart blood flow reversal is usually caused by heart valve insufficiency. Heart valve insufficiency includes tricuspid valve insufficiency and mitral valve insufficiency.

[0003] Tricuspid valve insufficiency: Tricuspid valve insufficiency or tricuspid regurgitation (TR) is a structural heart valve disease in which the tricuspid valve between the right atrium and the right ventricle does not close completely (systole) when the right ventricle contracts. This allows blood to flow from the right ventricle to the right atrium, which increases the blood volume and pressure in the right atrium and right ventricle, and if severe enough, the central venous blood volume and pressure. The causes are divided into primary and secondary. Primary tricuspid valve insufficiency refers to defects only in the tricuspid valve, such as infective endocarditis; secondary tricuspid valve insufficiency refers to defects in the valve caused by some other pathology, such as left ventricular failure or pulmonary hypertension. The mechanism is that right ventricular dilation causes the valve base (annulus) to dilate, causing the three valve leaflets to be too far apart to contact each other; or one or more of the three valve leaflets is abnormal. Microscopic tricuspid regurgitation is found in about 50% to 60% of young people. About 15% of adults have mild tricuspid regurgitation. At least 1.6 million people in the United States have moderate or severe cases. It is estimated that about 70 million people worldwide have tricuspid regurgitation. Microscopic tricuspid regurgitation may not affect the body. However, as the condition becomes more severe, the impact will also increase. Moderate and severe tricuspid regurgitation changes the shape of the heart. This causes permanent heart damage, leading to heart failure and death (especially in people over 70 years old).

[0004] Mitral regurgitation: Mitral regurgitation or mitral valve regurgitation is a structural heart valve disease in which the mitral valve does not close properly when the heart pumps blood. That is, an abnormal phenomenon in which blood flows backward from the left ventricle into the left atrium through the mitral valve when the left ventricle contracts. Mitral regurgitation is the most common form of valvular heart disease. The causes are divided into primary and secondary. Caused by mitral valve problems, called primary mitral regurgitation. Secondary mitral regurgitation is mainly caused by left ventricular dilation, resulting in stretching of the mitral annulus and displacement of the papillary muscle. The prevalence of mitral regurgitation in the population is about 2%, and it affects men and women equally. It is one of the two most common heart valve diseases in the elderly, and is the most common type of heart valve disease in low-income countries. Mild mitral and tricuspid regurgitation is currently mainly treated with drugs. Severe cases mainly use replacement and repair surgery, and are mainly surgical. Although it has certain effects in clinical practice, there are still some limitations. Replacement surgery cuts off the subvalvular device, which can cause systolic dysfunction; requires anticoagulation; there is always a risk of artificial valve endocarditis and thromboembolism; mortality rate 2% to 8%. Repair surgery has a long operation time; difficult to teach and learn; annual failure rate 1% to 3%. The development of transcatheter interventional therapy is currently being vigorously developed, but the product is still immature. Surgical replacement and repair surgery are difficult, have a high failure rate, cause great trauma to patients, have a long postoperative healing time, and are often accompanied by postoperative complications. The replacement surgery of transcatheter intervention has some products on the market, but the essence of replacement surgery is to replace the function of the human body itself, which often leads to complications over time and is not a long-term effective treatment method. The repair surgery of transcatheter intervention has great difficulty in fixing and detaching the device at the lesion in the body, and there are currently few suitable products and technologies.

[0005] At present, the repair surgery of transcatheter intervention has a unique shape and structure of most medical devices, and the production and preparation cost is relatively high, which increases the amount of surgery for patients, and there is a lack of a simple and useful anchor hook implantation device in the prior art. SUMMARY

[0006] Therefore, the present application provides an anchor hook assembly, which comprises a sleeve and an anchor hook; the sleeve is provided with a push channel for accommodating the anchor hook, and a proximal end of the sleeve is provided with a sleeve connecting portion for detachable connection with a delivery system.

[0007] In a possible implementation manner, the sleeve connecting portion is a threaded connecting portion.

[0008] On the other hand, the present application also provides an anchor hook launching device, which comprises a sleeve, a push rod detachably connected with the sleeve, and a launching assembly; the sleeve is provided with a push channel for accommodating the anchor hook; the launching assembly comprises an elastic member for launching the anchor hook and a control member for controlling the elastic member.

[0009] In a possible implementation, the push rod is provided with an abutting table abutting against the elastic member.

[0010] In a possible implementation, the ejecting assembly comprises an ejecting block abutting against the elastic member at a distal end; and a distal end of the control member is connected with the ejecting block.

[0011] In a possible implementation, the control member is a string member, and the push rod is provided with two or more first string holes; and the control member is arranged in the two or more first string holes.

[0012] In a possible implementation, the ejecting block is in a cylindrical structure, and the ejecting block is provided with two or more second string holes; and the control member is arranged in the two or more second string holes.

[0013] In a possible implementation, the push rod is provided with a limiting groove accommodating the elastic member on an end surface of the abutting table, and a depth of the limiting groove is less than an initial length of the elastic member.

[0014] In a possible implementation, the push rod is provided with two or more first string holes along an axial direction of the push rod, and the ejecting block is provided with two or more string holes along the axial direction of the push rod; the control member is arranged in the corresponding first string holes and second string holes; the push rod is provided with an abutting table abutting against the elastic member, and an end surface of the abutting table is provided with a limiting groove accommodating the elastic member, and a depth of the limiting groove is less than an initial length of the elastic member; the first string holes are located in the limiting groove and do not interfere with each other; and a projection of an inner ring structure of the push rod provided with the limiting groove in an ejecting direction is consistent with a projection of the ejecting block in the ejecting direction.

[0015] In a possible implementation, the push rod is threadedly connected with the sleeve; and a first outer thread is arranged on an outer sidewall of a distal end of the push rod, and a first inner thread matched with the first outer thread is arranged on an inner sidewall of a proximal end of the sleeve.

[0016] In a possible implementation, the push rod is in a cylindrical structure; and the push rod extends a pull rod to a proximal side, and a diameter length of the pull rod is less than a diameter length of the push rod.

[0017] In a possible implementation, the pull rod is coaxially arranged with the push rod.

[0018] In a possible implementation, the sleeve is in a cylindrical tube structure, and the sleeve is provided with a sliding groove in communication with the push channel.

[0019] In a possible implementation, the sliding groove is arranged along the axial direction of the sleeve, and the sliding groove is in communication with the distal end side of the sleeve.

[0020] In a possible implementation, the number of sliding grooves is more than two, and the sliding grooves are arranged at equal intervals on the side wall of the sleeve.

[0021] In a possible implementation, the anchor hook is arranged in the pushing channel, and the end of the anchor hook can be in contact with the ejecting block.

[0022] In a possible implementation, the elastic member is a spring.

[0023] In a possible implementation, the control member is an elastic rope.

[0024] The anchor hook assembly has the following beneficial effects: the pushing channel is arranged in the sleeve, and the sleeve connecting part is arranged on the proximal end side of the sleeve, so that, when the surgical personnel perform delivery in the patient, after the delivery is completed, the sleeve can be directly withdrawn and disassembled in a detachable manner at the proximal end, and then the sleeve to be released from the anchor hook is reinstalled, thereby realizing a high-efficiency multiple release process, optimizing redundant steps and minimizing the operation time.

[0025] The anchor hook ejecting device has the following beneficial effects: the pushing rod is detachably installed in the sleeve, and the distal end of the pushing rod has an abutting table located in the sleeve and in contact with the ejecting part, the control member is pulled from the proximal end by the implementer in the field, the control member acts on the ejecting block, the elastic potential energy stored in the elastic member is converted into kinetic energy for pushing the ejecting block to the distal end after the control member is released, so as to facilitate the launching of the anchor into the target tissue of the human body. The sleeve, the pushing rod, the ejecting part and the elastic member arranged between the pushing rod and the ejecting part together constitute the ejecting device, which has a simple structure and is easy to produce and manufacture. Furthermore, the structure formed after the sleeve is connected with the pushing rod effectively improves the stability of the ejecting block during the ejection, ensures the reliable and stable ejection of the anchor to the distal end in the sleeve, and can balance the good operability of the implementer in the field.

[0026] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the application and serve to explain the principles of the application.

[0028] Figure 1A cross-sectional view showing a ready-to-use state of the anchor hook ejection device of the embodiment of the present application;

[0029] Figure 2 A side view showing a ready-to-use state of the anchor hook ejection device of the embodiment of the present application;

[0030] Figure 3 A cross-sectional view showing a ready-to-eject state of the anchor hook ejection device of the embodiment of the present application;

[0031] Figure 4 A side view showing an ejection state of the anchor hook ejection device of the embodiment of the present application;

[0032] Figure 5 A perspective view showing a ready-to-use state of the anchor hook ejection device of the embodiment of the present application;

[0033] Figure 6 A perspective view showing a ready-to-use state of the anchor hook ejection device of the embodiment of the present application;

[0034] Figure 7 A perspective view showing a ready-to-use state of the anchor hook ejection device of the embodiment of the present application;

[0035] Figure 8 A perspective view showing a ready-to-use state of the anchor hook ejection device of the embodiment of the present application;

[0036] Figure 9 A perspective view showing a ready-to-use state of the anchor hook ejection device of the embodiment of the present application. DETAILED DESCRIPTION

[0037] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in different drawings represent the same or similar elements. Although various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0038] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used only for the convenience of description of the present application or simplification of description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] The term "distal end" refers to the end close to the target tissue in the patient's body. The term "proximal end" refers to the end close to the medical personnel operating.

[0040] Furthermore, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the technical features indicated. Thus, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0041] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0042] In addition, for the purpose of convenience and brevity, specific details of implementations are set forth in the description below. It will be appreciated that the present application can be practiced without some or all of these specific details. In some instances, well known methods, structures, and techniques have not been described in detail in order to avoid obscuring the present application.

[0043] Figure 1 A cross-sectional view showing a state of the anchor hook launching device of the embodiment of the present application before use; Figure 2 A side view showing a state of the anchor hook launching device of the embodiment of the present application before use; Figure 3 A cross-sectional view showing a state of the anchor hook launching device of the embodiment of the present application before launching; Figure 4 A side view showing a state of the anchor hook launching device of the embodiment of the present application after launching; Figure 5 A perspective view showing a state of the anchor hook launching device of the embodiment of the present application before use; Figure 6 A perspective view showing a structure of the push rod of the embodiment of the present application; Figure 7 A perspective view showing a structure of the sleeve of the embodiment of the present application; Figure 8 A perspective view showing a structure of the launching block of the embodiment of the present application; Figure 9 A perspective view showing a structure of the anchor hook of the embodiment of the present application.

[0044] As Figures 1-9 shown, the present application proposes an anchor hook assembly, comprising a sleeve 1 and an anchor hook 2; the sleeve 1 is provided with a push channel for accommodating the anchor hook 2, and a proximal end of the sleeve 1 is provided with a sleeve connecting part for detachable connection with a delivery system.

[0045] In this embodiment, by providing the push channel in the sleeve 1 and the sleeve connecting part at the proximal end side of the sleeve 1, the surgical personnel can directly withdraw and detach the sleeve 1 with the anchor hook released after the delivery in the patient's body, and then reinstall the sleeve 1 to be used for releasing the anchor hook 2, so as to realize a higher efficiency of the multiple release process, optimize the redundant steps and minimize the operation time.

[0046] In one embodiment, the sleeve connection is a threaded connection.

[0047] In this embodiment, the sleeve 1 connection is a threaded connection, which can be provided with an internal thread at the proximal end of the sleeve 1, and the pushing member of the delivery system can be detachably connected to the distal end of the pushing member, i.e. the distal end of the pushing member has an external thread structure that matches the internal thread structure.

[0048] The anchor hook launching device comprises a sleeve 1, a pushing rod 5, and a launching portion. The sleeve 1 is provided with a pushing channel 12 for accommodating the anchor hook 2. The pushing rod 5 comprises an abutting table 53 installed in the sleeve 1. The launching portion comprises an extension member 4 installed in the pushing channel 12 and in contact with the abutting table 53. The launching portion further comprises a launching block 3 for pushing the extension member 4 and a control member 6 for pulling the launching block 3. The launching block 3, the extension member 4, and the pushing rod 5 are sequentially arranged from the distal end to the proximal end of the sleeve 1.

[0049] In this embodiment, the pushing rod 5 is detachably installed in the sleeve 1, and the distal end of the pushing rod 5 has an abutting table 53 located in the sleeve 1 and in contact with the launching portion. A person skilled in the art can pull the control member 6 from the proximal end. The control member 6 acts on the launching block 3, which can compress the extension member 4. After the control member 6 is released, the elastic potential energy stored in the extension member 4 is converted into kinetic energy for pushing the launching block 3 in the distal direction. The launching block 3 can be launched in the distal direction along the pushing channel 12, pushing the anchor hook 2 to be launched into the target tissue of the human body. The sleeve 1, the pushing rod 5, the launching portion, and the extension member 4 arranged between the pushing rod 5 and the launching portion collectively form the launching device. The device has a simple structure and is easy to produce. Moreover, the structure formed after the sleeve 1 is connected to the pushing rod 5 effectively improves the stability of the launching block 3 during launching, ensuring that the anchor hook can be reliably and stably launched in the distal direction in the sleeve 1. During use, the anchor hook can be launched only by removing the force on the control member 6, which can take into account the better operability of a person skilled in the art.

[0050] It should be noted that the proximal end in this application refers to the end close to the medical personnel, and the distal end refers to the end close to the target tissue in the patient's body.

[0051] In one embodiment, the end face of the pushing rod 5 where the abutting table 53 is arranged is provided with a limiting groove 51 for accommodating the extension member 4.

[0052] In this embodiment, the end face of the pushing rod 5 close to the distal end is provided with a limiting groove 51. The structure of the limiting groove 51 matches the structure of the extension member 4. It is only necessary to ensure that the length of the extension member 4 in the initial state is greater than the depth of the limiting groove 51, and the extension member 4 can be extended out of the limiting groove 51.

[0053] Preferably, a ring-shaped limiting groove 51 is formed on the distal end face of the push rod 5.

[0054] In one embodiment, two or more first rope holes 52 are formed on the push rod 5, and the control member 6 is arranged in the two or more first rope holes 52.

[0055] In this embodiment, two or more first rope holes 52 are formed on the push rod 5, and the first rope holes 52 are usually arranged at equal intervals on the distal end face of the push rod 5. The force applying and ejecting part is arranged in the two or more first rope holes 52 so as to pull the ejecting block 3 at the distal end.

[0056] In one embodiment, the ejecting block 3 has a cylindrical structure, and two or more second rope holes 31 are formed on the ejecting block 3, and the control member 6 is arranged in the two or more second rope holes 31.

[0057] In this embodiment, the ejecting block 3 has a cylindrical structure, and two or more second rope holes 31 are formed on the ejecting block 3, and the second rope holes 31 are arranged at equal intervals on the ejecting block 3. The force applying part can pull the ejecting block at the distal end.

[0058] In one embodiment, two or more first rope holes 52 are formed on the push rod 5 along the axial direction, two or more second rope holes 31 are formed on the ejecting block 3 along the axial direction of the push rod 5, the control member 6 is arranged in the corresponding first rope hole 52 and second rope hole 31, the end face of the push rod 5 provided with the abutting table 53 is provided with a limiting groove 51 for accommodating the telescopic member 4, the depth of the limiting groove 51 is less than the initial length of the telescopic member 4, the first rope hole 52 is located in the limiting groove 51 and does not interfere with each other, and the inner circle structure of the push rod 5 provided with the limiting groove 51 is consistent with the projection of the ejecting block 3 in the ejecting direction.

[0059] In this embodiment, more specifically, the first rope hole 52 formed on the push rod 5 corresponds to the second rope hole 31 formed on the ejecting block 3, so that the control member 6 can be smoothly arranged in the corresponding first rope hole 52 and second rope hole 31. Further, after the limiting groove 51 is formed, the circular limiting groove 51 divides the distal end face of the push rod 5 into an inner circle structure and an outer circle structure, and the projection of the inner circle structure of the push rod 5 in the axial direction of the push rod 5 is the same as the projection structure of the ejecting block 3 in the axial direction of the push rod 5.

[0060] In one embodiment, the push rod 5 is threadedly connected with the sleeve 1, wherein a first external thread is formed on the distal end outer side wall of the push rod 5, and a first internal thread matched with the first external thread is formed on the proximal end inner side wall of the sleeve 1.

[0061] In this embodiment, the first external thread formed on the distal end outer wall of the push rod 5 is screwed with the first internal thread formed on the proximal end inner wall of the sleeve 1, and the detachable connection of the push rod 5 and the sleeve 1 facilitates the replacement of each component and facilitates the installation of the anchor in the sleeve 1 by the person skilled in the art.

[0062] In one specific embodiment, the push rod 5 has a cylindrical structure, and the pull rod 7 is extended to the proximal side of the push rod 5, and the diameter of the pull rod 7 is smaller than the diameter of the push rod 5.

[0063] In this embodiment, the push rod 5 has a cylindrical structure, and the pull rod 7 is extended to the proximal side of the push rod 5, and the diameter of the pull rod 7 is smaller than the diameter of the push rod 5.

[0064] In one specific embodiment, the pull rod 7 is coaxially arranged with the push rod 5.

[0065] In one specific embodiment, the sleeve 1 has a cylindrical tube structure, and the sleeve 1 is provided with a sliding groove 11 communicating with the push channel 12.

[0066] In this embodiment, the sleeve 1 is provided with a sliding groove 11, and the sliding groove 11 is mainly used to prevent the anchor from rotating in the sleeve 1, and a wire can be threaded on the sliding groove 11 and the perforation at the rear end of the anchor to facilitate the positioning and guiding of the anchor, and the wire threaded at the rear end of the anchor also facilitates the recovery of the anchor after use.

[0067] More specifically, the specific structure of the sliding groove 11 is not limited, as long as the sliding groove 11 can guide the ejection of the anchor, which is usually a square groove and communicates with the distal end face of the sleeve 1.

[0068] In one specific embodiment, the sliding groove 11 is arranged in the axial direction of the sleeve 1, and the sliding groove 11 communicates with the sleeve 1 on the distal side.

[0069] In one specific embodiment, the number of sliding grooves 11 is two or more, and the sliding grooves 11 are arranged at equal intervals on the side wall of the sleeve 1.

[0070] In one specific embodiment, it further includes an anchor hook 2 arranged in the push channel 12, and the distal end of the anchor hook 2 can contact the ejection block 3.

[0071] In this embodiment, the end of the anchor hook 2 is provided with a third rope hole, the force applying and ejecting part 6 is arranged in the first rope hole 52 of the pushing rod 5, the second rope hole 31 of the ejecting block 3 and the third rope hole of the anchor hook 2. When the anchor hook is not completely ejected or the fixed position deviates, the anchor hook 2 can be pulled out and re-ejected by the force applying and ejecting part 6, which is easy to recover the anchor hook 2 and improve the fault tolerance of the operator when operating the anchor hook ejecting device.

[0072] The anchor hook 2 can be made of stainless steel. Further, the anchor hook 2 has a single-layer or double-layer conical tip structure. Specifically, the anchor hook 2 has one or two rings of conical pieces arranged around the main rod, and the conical tip part is connected to the main rod. The included angle between the conical piece and the main rod is not limited, and is usually 45° or 30°. In the case of ensuring the fixing effect of the anchor hook 2 and facilitating ejection, the structure is more reasonable, and the single-layer or double-layer conical tip structure is easy to mass-produce. The double-layer conical tip structure of the anchor hook 2 has a loose tower structure, and the two layers of conical tip structures are stacked in the same direction and coaxially, so that the two layers of conical tip structures can be fixed to the ventricle and atrium, respectively.

[0073] In one embodiment, the distal end of the sleeve 1 is provided with a blocking part for blocking the ejecting block 3. The specific structure of the blocking part is not limited, as long as it does not hinder the ejection of the anchor hook 2 from the sleeve 1, and can prevent the anchor hook 2 from sliding out of the distal end of the sleeve 1, which will not adversely affect the operation.

[0074] In one embodiment, the telescopic member 4 is a spring.

[0075] In one embodiment, the control member 6 is a spring wire.

[0076] The above has described the embodiments of the present application. The above description is exemplary and is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles, practical applications or improvements to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. An anchor hook launching device, characterized by, The anchor hook, the sleeve, the push rod and the ejecting assembly are detachably connected; The sleeve is provided with a push channel for accommodating the anchor hook; The ejecting assembly comprises an elastic member for ejecting the anchor hook, a control member for controlling the elastic member, and an ejecting block for pushing the distal end of the elastic member; The push rod is provided with an abutting platform for pushing the elastic member, and an end surface of the push rod is provided with a limiting slot for accommodating the elastic member, and the depth of the limiting slot is less than the initial length of the elastic member; The push rod has a cylindrical structure, and a pull rod extends towards the proximal end side, and the diameter of the pull rod is less than that of the push rod, and the pull rod is coaxially arranged with the push rod; The push rod is threadedly connected with the sleeve, and a first external thread is formed on the outer wall of the distal end of the push rod, and a first internal thread matched with the first external thread is formed on the inner wall of the proximal end of the sleeve; The proximal end of the sleeve is provided with a sleeve connecting portion for detachable connection with a delivery system, and the sleeve connecting portion is a threaded connecting portion; The sleeve has a cylindrical structure, and is provided with a sliding groove in communication with the push channel; The sliding groove is arranged along the axial direction of the sleeve, and is in communication with the sleeve on the distal end side, and the number of the sliding grooves is two or more, and the sliding grooves are arranged at equal intervals on the side wall of the sleeve; The anchor hook is arranged in the push channel, and the distal end of the anchor hook can be in contact with the ejecting block; After the delivery is completed, the sleeve with the anchor hook released is withdrawn and detached in a detachable manner, and then the sleeve to be used for releasing the anchor hook is reinstalled.

2. The hook launching device of claim 1, wherein The control member can drive the movement of the ejecting block.

3. The hook launching device of claim 2, wherein, The control member is a string member, and the push rod is provided with a first string hole, and the control member is arranged in the first string hole.

4. The hook launching device of claim 2, wherein The ejecting block has a cylindrical structure, and is provided with a second string hole, and the control member is arranged in the second string hole.

5. The hook launching device of claim 4, wherein, The push rod is provided with a first string hole along the axial direction thereof, and the ejecting block is provided with two or more second string holes along the axial direction of the push rod, and the control member is arranged in the corresponding first string hole and second string hole. The first string hole is located in the limiting slot, and the first string hole does not interfere with the limiting slot. The inner ring structure of the push rod provided with the limiting slot is projected in the ejecting direction, and the projection of the ejecting block in the ejecting direction is consistent.

6. The hook launching device of claim 1, wherein, The elastic member is a spring.

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