Anchor hook assembly and auger therefor

Abstract

The application relates to an anchor hook assembly and a screw conveying device thereof, which comprises a sleeve and an anchor hook, the sleeve comprises a main body part and a piercing part at the distal end of the main body part, the main body part is provided with a pushing channel for accommodating the anchor hook and a sliding groove communicated with the pushing channel, a pushing part is arranged in the pushing channel, a limiting part is arranged in the sliding groove, a pushing sleeve is provided with a pushing part for pushing the pushing part, and a pushing rod is provided with a pushing connecting part detachably connected with the sleeve. The piercing part is fixed by being pierced into target tissue, the pushing sleeve is screwed, the pushing part at the distal end of the pushing sleeve pushes the pushing part to move to the distal end, the device structure is relatively simple, large-scale mass production is easy, and the device is convenient for operation of the person skilled in the art. More specifically, the piercing part is pressed against the target tissue, the main body part is prevented from rotating together, the pushing sleeve is rotated, the pushing sleeve pushes the pushing part to move to the distal end of the sleeve together, and the pushing part completely releases the anchor hook in front of the pushing part to the target tissue.

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 a spiral conveying device thereof. 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 sub-valve device, which can cause systolic dysfunction; requires anticoagulation; there is always a risk of artificial valve endocarditis and thromboembolism; mortality rate 2%~8%. Repair surgery has a long operation time; difficult to teach and learn; annual failure rate 1%~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. Transcatheter interventional replacement has some products on the market, but the essence of replacement 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. Transcatheter interventional repair 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, most of the medical devices for transcatheter interventional repair have unique shapes and structures, and the production and preparation cost is 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 comprises a main body portion and a piercing portion located at the distal end of the main body portion, and the main body portion is provided with a pushing channel for accommodating the anchor hook and a sliding groove communicating with the pushing channel.

[0007] In one possible implementation, the pushing member for pushing the anchor hook comprises a pushing portion mounted in the pushing channel and a limiting portion slidable in the sliding groove.

[0008] In a possible implementation, the pushing part is in a cylindrical structure, and the axial direction of the pushing part is consistent with the direction from the proximal end to the distal end of the sleeve; and the limiting part is in a sheet shape and arranged on the side wall of the pushing part in the axial direction of the pushing part.

[0009] In a possible implementation, the limiting part is flush with the pushing part in the axial direction of the pushing part.

[0010] In a possible implementation, the number of limiting parts is more than two, and the limiting parts are arranged at equal angles in the circumferential direction of the pushing part.

[0011] In a possible implementation, the main part is in a cylindrical shape, the number of the protruding parts is more than two, the protruding parts are arranged at equal angles in the circumferential direction of the main part at the distal end of the main part, and the protruding parts do not interfere with the anchor hook.

[0012] In a possible implementation, the chute is arranged in parallel with the axial direction of the main part, the chute is in communication with the distal end of the main part, and the chute is not in communication with the proximal end of the main part.

[0013] In a possible implementation, the number of the protruding parts is two, and the protruding parts are arranged oppositely at the distal end of the main part; the number of the chutes is two, or the number of the chutes is two and the chutes are arranged oppositely on the side wall of the main part; and the straight line connected by the two protruding parts is perpendicular to the straight line connected by the two chutes.

[0014] In a possible implementation, the distal end of the protruding part is contracted towards the center of the main part, or the inner diameter of the distal end of the main part is smaller than the inner diameter of the proximal end of the main part.

[0015] In another aspect, the application discloses a spiral conveying device of an anchor hook assembly, which comprises the anchor hook assembly in any possible implementation, a pushing part used for pushing the anchor hook, a pushing sleeve, and a pushing rod; the pushing part comprises a pushing part arranged in the pushing channel and a limiting part which can slide in the chute; the pushing sleeve has an abutting part used for abutting the pushing part; and the pushing rod has a pushing connecting part which is detachably connected with the sleeve.

[0016] In a possible implementation, the pushing sleeve is sleeved outside the main part and movably connected with the main part; and the abutting part abuts the proximal end of the limiting part.

[0017] In a possible implementation, the main part is threadedly connected with the pushing sleeve; the outer side wall of the main part is provided with a first outer thread, and the inner wall of the pushing sleeve is provided with a first inner thread matched with the first outer thread.

[0018] In a possible implementation, the push connecting part is arranged at the distal end of the push rod and detachably connected with the proximal end of the main body part.

[0019] In a possible implementation, the main body part is threadedly connected with the push rod; wherein a second inner thread is arranged on the inner wall of the proximal end of the main body part, and a second outer thread matching the second inner thread is arranged on the distal end of the push rod.

[0020] In a possible implementation, the push sleeve is made of soft material.

[0021] In a possible implementation, the push rod is made of soft material.

[0022] In a possible implementation, a protective hose is arranged outside the push sleeve.

[0023] The anchor hook assembly has the following beneficial effects: the main body part is internally hollow, the protruding part at the distal end of the main body part is used to stab into the vicinity of the target tissue of the human body, to ensure that the whole sleeve is fixed and immovable, thereby playing a fixing role, the hollow part in the main body part is a push channel for accommodating the anchor hook, and a sliding groove is arranged on the side wall of the main body part and communicates with the main body part, which facilitates guiding the anchor hook when pushing the anchor hook to the distal end.

[0024] The anchor hook assembly has the following beneficial effects: the main body part is internally hollow, the protruding part at the distal end of the main body part is used to stab into the vicinity of the target tissue of the human body, to ensure that the whole sleeve is fixed and immovable, thereby playing a fixing role, the hollow part in the main body part is a push channel for accommodating the anchor hook, and a sliding groove is arranged on the side wall of the main body part and communicates with the main body part, which facilitates guiding the anchor hook when pushing the anchor hook to the distal end.

[0025] Other features and aspects of the present application will become apparent from a detailed description of exemplary embodiments with reference to the following drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and serve to explain the principles of the present application.

[0027] Figure 1 A cross-sectional view of the anchor screw conveyor device of the present application embodiment is shown;

[0028] Figure 2 A perspective view of the sleeve of the present application embodiment is shown;

[0029] Figure 3 A perspective view of the pusher of the present application embodiment is shown;

[0030] Figure 4 A perspective view of the pusher rod of the present application embodiment is shown;

[0031] Figure 5 A perspective view of the pusher sleeve of the present application embodiment is shown;

[0032] Figure 6 A side view of the anchor screw conveyor device of the present application embodiment is shown;

[0033] Figure 7 A perspective view of the sleeve of the present application embodiment from another angle is shown. DETAILED DESCRIPTION

[0034] Various exemplary embodiments, features, and aspects of the present application will be described in detail 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.

[0035] Wherein it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application or simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] 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 operator's operating end.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Figure 1 A cross-sectional view of the anchor spiral conveying device according to an embodiment of the present application is shown; Figure 2 A perspective view of the sleeve according to an embodiment of the present application is shown; Figure 3 A perspective view of the pusher according to an embodiment of the present application is shown; Figure 4 A perspective view of the push rod according to an embodiment of the present application is shown; Figure 5 A perspective view of the push sleeve according to an embodiment of the present application is shown; Figure 6 A side view of the anchor spiral conveying device according to an embodiment of the present application is shown; Figure 7 A perspective view of the sleeve according to another embodiment of the present application is shown.

[0041] As shown in Figures 1-7 The present application provides an anchor assembly, which comprises a sleeve 2 and an anchor 1; the sleeve 2 comprises a main body 21 and a piercing portion 22 at the distal end of the main body 21, and the main body 21 is provided with a push channel 211 for accommodating the anchor 1 and a sliding groove 212 in communication with the push channel 211.

[0042] In this embodiment, the sleeve 2 comprises a main body 21 and a piercing portion 22 at the distal end of the main body 21, the main body 21 is hollow, and the piercing portion 22 at the distal end of the main body 21 is used to ensure that the sleeve 2 is fixed after being pierced into the vicinity of the target tissue of the human body, thereby playing a fixing role. The hollow portion in the main body 21 is a push channel 211 for accommodating the anchor 1, and a sliding groove 212 in communication with the main body 21 is formed on the side wall of the main body 21. The sliding groove 212 is used to guide the anchor 1 when the anchor 1 is pushed to the distal end.

[0043] Further, the anchor hook 1 is arranged in the pushing channel 211, the distal end of the anchor hook 1 extends out of the sleeve 2, and the proximal end can be in contact with the pushing member 3.

[0044] In this embodiment, the anchor hook 1 in the present application can directly use the anchor in the prior art, and no improvement is made to the anchor hook 1 in the present application. It is only required to ensure that most of the anchor hook 1 or the proximal end of the anchor hook 1 can be installed into the sleeve 2 and can be smoothly delivered to the target tissue, and thus no more description is made herein.

[0045] It is also particularly emphasized that the distal end in the present application refers to the end close to the target tissue of the patient when the anchor hook spiral delivery device is used, and the proximal end is the operating end of the operator.

[0046] In one specific embodiment, the pushing member 3 for pushing the anchor hook 1 is provided, and the pushing member 3 comprises a pushing part 31 arranged in the pushing channel 211 and a limiting part 32 which can slide in the sliding groove 212.

[0047] In this embodiment, the limiting part 32 is arranged on the side wall of the pushing member 3, and the arrangement of the limiting part 32 plays a good guiding role in the movement of the pushing part 31 to the distal end of the sleeve 2, so as to ensure the stable movement of the pushing member 3 to the distal end in the pushing channel 211, thereby ensuring the precision of the anchor hook assembly in the present application during the delivery of the anchor hook 1.

[0048] In one specific embodiment, the pushing part 31 has a cylindrical structure, the axial direction of the pushing part 31 is consistent with the direction from the proximal end to the distal end of the sleeve 1, and the limiting part 32 has a sheet shape and is arranged on the side wall of the pushing part 31 along the axial direction of the pushing part 31.

[0049] In one specific embodiment, the limiting part 32 is flush with the pushing member 3 in the axial direction of the pushing member 3.

[0050] In one specific embodiment, the number of the limiting parts 32 is two or more, and the limiting parts 32 are arranged at equal angles along the circumference of the pushing member 3.

[0051] In this embodiment, two or more limiting parts 32 are arranged along the circumference of the pushing member 3, and the limiting parts 32 are matched with the corresponding sliding grooves 212 on the sleeve 2, so that the two or more points guide the forward movement of the pushing member 3, the forward movement is more stable, the precision of the operation is reasonably improved, the operation of the operator in the field is more stable, and it is also beneficial to the operator in the field. It is also pointed out that, preferably, the number of the limiting parts 32 is two, and the two limiting parts 32 extend outward on the opposite sides of the circumference of the pushing member 3 and are arranged at equal angles. The extension to the opposite sides of the limiting parts 32 with the sheet shape refers to the extension of the limiting parts 32 in the opposite directions along the circumference of the cylindrical pushing member 3.

[0052] In one of the specific embodiments, the main body 21 is cylindrical, the number of the protruding parts 22 is two or more, and the protruding parts 22 are arranged at equal angles along the circumference of the distal end of the main body 21 and do not interfere with the anchor hook 1.

[0053] In this embodiment, the distal end of the main body 21 continues to extend forward with two or more protruding parts 22 in the shape of sharp structures, which can facilitate the penetration of the sleeve 2 into the target tissue and have a better fixing effect, and the protruding parts 22 do not interfere with the pushing member 3.

[0054] In one of the specific embodiments, the sliding groove 212 is arranged parallel to the axial direction of the main body 21, and the sliding groove 212 is in communication with the distal end of the main body 21 and is not in communication with the proximal end of the main body 21.

[0055] In this embodiment, preferably, the ratio of the length of the sliding groove 212 arranged in the axial direction of the main body 21 to the length of the main body 21 itself is greater than two-thirds.

[0056] In one of the specific embodiments, the number of the protruding parts 22 is two, and the two protruding parts 22 are arranged oppositely at the distal end of the main body 21, and the number of the sliding grooves 212 is two, and the two sliding grooves 212 are arranged oppositely on the side wall of the main body 21, and the straight line connected by the two protruding parts 22 is perpendicular to the straight line connected by the two sliding grooves 212.

[0057] In this embodiment, the number of the protruding parts 22 arranged at the distal end of the main body 21 and the number of the sliding grooves 212 arranged on the side wall of the main body 21 are both two, and the straight line connected by the two protruding parts 22 is perpendicular to the straight line connected by the two sliding grooves 212, which ensures that the arrangement positions of the protruding parts 22 and the sliding grooves 212 on the main body 21 are more stable during the pushing of the anchor hook 1, and makes the design of the sleeve 2 more reasonable.

[0058] In one of the specific embodiments, the distal end of the protruding part 22 is contracted toward the center of the main body 21 or the inner diameter of the distal end of the main body 21 is smaller than the inner diameter of the proximal end of the main body 21.

[0059] On the other hand, the present application discloses a spiral conveying device for an anchor hook assembly, which comprises the anchor hook assembly of any of the above embodiments, a pushing member 3 for pushing the anchor hook 1, a pushing sleeve 5, and a pushing rod 4, the pushing member 3 comprises a pushing part 31 installed in the pushing channel 211 and a limiting part 32 which can slide in the sliding groove 212, the pushing sleeve 5 has a pushing part 51 for pushing the pushing member 3, and the pushing rod 4 has a pushing connecting part 41 which can be detachably connected with the sleeve 2.

[0060] Based on any one of the anchor hook assemblies described above, the present application further provides an anchor hook assembly spiral delivery device, wherein the anchor hook assembly spiral delivery device of the present application comprises the anchor hook assembly described above. By movably connecting the anchor hook assembly described above with the push sleeve 5, when the anchor hook 1 is delivered, the piercing part 22 of the sleeve 2 pierces into the vicinity of the target tissue of the human body and is fixed, the push sleeve 5 can move to the distal end relative to the sleeve 2, and the push member 3 pushes the anchor hook 1 to the distal end.

[0061] Specifically, the anchor hook spiral delivery device comprises the sleeve 2, the push member 3, and the push sleeve 5; the push channel 211 is pre-opened in the inside of the sleeve 2, and the distal end of the sleeve 2 is suitable for mounting the anchor hook 1; the push member 3 is arranged in the push channel 211 and can slide relative to the sleeve 2; the push sleeve 5 is sleeved outside the sleeve 2 and movably connected with the sleeve 2, and the distal end of the push sleeve 5 can contact the push member 3.

[0062] In this embodiment, the sleeve 2 and the push sleeve 5 sleeved outside the sleeve 2 are movably connected, and the two can move relative to each other in the front and back directions, and the matching push member 3 is arranged in the push channel 211 of the sleeve 2, and the anchor hook 1 is arranged in front of the anchor hook 1 to be released, and the person skilled in the art only needs to move the push sleeve 5 forward, so that the pushing part 51 of the push sleeve 5 pushes the push member 3 to move forward, and the push member 3 pushes the anchor hook 1, thereby smoothly implanting the anchor hook 1 into the target tissue. The device itself has fewer components and a relatively simple structure, is easy to produce, and can be mass-produced at a lower cost, and the device is easy to operate for the person skilled in the art and has many advantages such as high operability. More specifically, the sleeve 2 is abutted to the target tissue and cannot move, at this time, the push sleeve 5 is rotated to move the push sleeve forward, the proximal end surface of the push member 3 in the inside of the sleeve 2 abuts against the distal end surface of the push sleeve 5, so that the position of the push member 3 in the push channel 211 gradually approaches the distal end, and the push member 3 completely releases the anchor hook 1 in front of the anchor hook 1 to the target tissue.

[0063] In one specific embodiment, the push sleeve 5 is sleeved outside the main body 21 and movably connected with the main body 21, and the pushing part 51 abuts against the proximal end of the limiting part 32.

[0064] In this embodiment, the push member 3 has a cylindrical structure with the limiting part 32 outward on the opposite sides, the limiting part 32 is usually a sheet structure, and the extension length of the limiting part 32 extends out of the maximum outer diameter of the sleeve 2, so that when the push sleeve 5 moves forward, the pushing part 51 of the push sleeve 5 can contact the part of the limiting part 32 extending out of the sleeve 2, thereby pushing the push member 3 forward.

[0065] In one embodiment, the main body 21 is threadedly connected with the pushing sleeve 5, wherein the outer side wall of the main body 21 is provided with a first outer thread 23, and the inner wall of the pushing sleeve 5 is provided with a first inner thread 52 matched with the first outer thread 23. The protruding part 22 at the distal end of the sleeve 2 can be inserted into the target tissue. The pushing sleeve 5 can push the pushing member 3 to move forward by rotating the pushing sleeve 5.

[0066] In this embodiment, the sleeve 2 is provided with a first outer thread 23, and the pushing sleeve 5 is provided with a first inner thread 52 matched with the first outer thread 23. In actual operation, in order to ensure that the subsequent rotation operation can be reasonably and stably realized, the operator in the field needs to first press the sleeve 2 against the target tissue, and then rotate the pushing sleeve 5. At this time, the sleeve 2 is fixed, and the pushing sleeve 5 gradually moves to the distal end under the action of the inner and outer threads, that is, it is close to the target tissue. The distal end of the pushing sleeve 5 pushes the pushing member 3 to move forward, and the pushing member 3 gradually releases the anchor hook 1 along the pushing channel 211 of the sleeve 2, until the anchor hook 1 is completely released to the target tissue, and the implantation of the anchor hook 1 into the corresponding target tissue is completed.

[0067] More specifically, the first outer thread 23 on the main body 21 is threadedly connected with the first inner thread 52 on the inner wall of the pushing sleeve 5. After the protruding part 22 is inserted into the target tissue of the human body, the operator in the field only needs to rotate the pushing sleeve 5, so that the pushing sleeve 5 relatively moves to the distal end with respect to the fixed main body 21, thereby pushing the pushing member 3 and the anchor hook 1 to move to the distal end. By rotating the pushing sleeve 5, the pushing member 3 and the anchor hook 1 are fed in a threaded feeding manner, which is compared with the sliding connection between the pushing sleeve 5 and the main body 21. Therefore, the feeding precision of the pushing member 3 and the anchor hook 1 is higher, thereby effectively improving the precision of the anchor hook 1 delivery.

[0068] In one embodiment, the pushing connecting part 41 is arranged at the distal end of the pushing rod 4, and is detachably connected with the proximal end of the main body 21.

[0069] In this embodiment, the pushing rod 4 is arranged at the proximal end of the sleeve 2 in a detachable manner. The pushing rod 4 greatly increases the operation distance of the operator in the field. Only by pushing the pushing rod 4 forward, the operator in the field can complete the insertion of the small part of the sleeve 2 in front of the pushing rod 4 into the target tissue, thereby providing more space for the medical personnel to operate, and facilitating the medical personnel to complete the operation together with other medical devices from the side close to the operator, thereby effectively improving the operation efficiency.

[0070] Furthermore, after completing the release of the anchor hook 1 as described above, the operator in the field can quickly recycle the anchor hook spiral delivery device except the implanted anchor hook 1, replace the sleeve 2, and install another distal anchor hook assembly at the distal end of the pushing rod 4. Replacing the anchor hook assembly can facilitate the medical personnel to quickly implant multiple anchor hooks 1.

[0071] In one embodiment, the main body 21 is threadedly connected to the push rod 4, wherein a second inner thread 24 is formed on the inner wall of the proximal end of the main body 21, and a second outer thread 42 is formed on the distal end of the push rod 4, which matches the second inner thread 24.

[0072] In this embodiment, the second outer thread 42 on the distal end of the push rod 4 is threadedly connected to the second inner thread 24 on the proximal end of the sleeve 2, which is convenient and fast to disassemble when replacing, and is not easy to damage.

[0073] In one embodiment, the distal end of the sleeve 2 extends forwardly with two or more protruding parts 22, which are in a pointed structure.

[0074] In this embodiment, the pointed structure at the distal end of the sleeve 2 is contracted towards the center of the sleeve 2, or the inner diameter of the distal end of the sleeve 2 is smaller than that of the proximal end of the sleeve 2.

[0075] In this embodiment, the pointed structure at the distal end of the sleeve 2 is contracted towards the center of the sleeve 2, which mainly serves as a limiting structure for the pusher 3, i.e. avoiding the pusher 3 from being pushed forward, or when the anchor hook 1 is released and the overall device is recovered, avoiding the situation that the distal end of the sleeve 2 has no limiting structure and the pusher 3 may fall out of the distal end of the sleeve 2 along the push channel 211, thus causing unnecessary safety hazards. Furthermore, the limiting structure can also be achieved by making the inner diameter of the distal end of the sleeve 2 smaller, so that the pusher 3 is stuck at the inner diameter of the distal end of the sleeve 2. In summary, only a limiting structure for the pusher 3 needs to be added at the distal end of the sleeve 2, so that the pusher 3 will not fall out of the sleeve 2 or fall near the target tissue of the human body. Therefore, it is not limited in this application.

[0076] In one embodiment, the push sleeve 5 is made of soft material.

[0077] In one embodiment, the push rod 4 is made of soft material.

[0078] In this embodiment, the push sleeve 5 and the push rod 4 are both surgical precision instruments when operated by the person skilled in the art. The soft material of the push sleeve 5 and the push rod 4 has a certain flexibility under the premise that their lengths are suitable for surgical operation, ensuring that they can be bent as much as possible under the premise of the above-mentioned operation, and also avoiding damage to the human body.

[0079] In one embodiment, a protective hose 6 is provided, which is sleeved on the push sleeve 5.

[0080] The operator needs to connect the second internal thread 24 on the sleeve 2 with the second external thread 42 at the distal end of the push rod 4 when using the sleeve 2, the anchor hook 1 and the pusher 3 together as a distal implant assembly. Then the assembly can be assembled into a state for use. After the operator implants an anchor hook 1, the operator can rotate the sleeve 2 out of the push rod 4, and then replace a complete distal implant assembly to facilitate the quick implantation of multiple anchor hooks 1.

[0081] In summary, the specific operation process of the anchor hook spiral conveying device of the present application is as follows: during implantation, the operator first places the protective hose 6 against the tissue position to be implanted, and pushes the push rod 4 forward, so that a small part of the distal end of the sleeve 2 penetrates into the target tissue. Then the operator rotates the push sleeve 5 from the proximal end, and the push sleeve 5 moves to the distal end close to the target tissue under the action of the thread, and contacts the part of the pusher 3 that extends out of the sleeve, thereby driving the pusher 3 in the push channel 211 in the sleeve 2 to move forward together, until the anchor hook 1 in front of the pusher 3 is completely pushed out of the sleeve 2, the implantation of the anchor hook 1 into the target tissue is completed, and then the operator pulls the push rod 4 distally to withdraw the sleeve 2, the pusher 3, the push rod 4 and the push sleeve 5 from the protective hose 6 to complete the recovery, thereby realizing a complete surgical operation of implanting the anchor hook 1 using the anchor hook spiral conveying device of the present application. Further, if the next anchor hook 1 implantation operation is required, the push rod 4 is twisted and separated from the sleeve 2, and another sleeve 2 for releasing the anchor hook 1 is installed, so that the next anchor hook 1 release operation can be quickly and conveniently started.

[0082] The above has described the embodiments of the present application, and the above description is exemplary, 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 the terms used herein is intended to best explain the principles, practical applications or improvements to the technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. An anchor hook assembly, characterized by, The anchor hook assembly comprises a sleeve and an anchor hook; the sleeve comprises a main body and a piercing part at the distal end of the main body; the main body is provided with a pushing channel for accommodating the anchor hook and a sliding groove communicating with the pushing channel; The main body is cylindrical; the number of the piercing parts is two; the piercing parts are arranged at equal angles along the circumference of the distal end of the main body; the piercing parts do not interfere with the anchor hook; the distal end of the piercing part is contracted towards the center of the main body or the inner diameter of the distal end of the main body is smaller than the inner diameter of the proximal end of the main body; The sliding groove is arranged parallel to the axial direction of the main body; the sliding groove communicates with the distal end of the main body and does not communicate with the proximal end of the main body; the number of the sliding grooves arranged on the side wall of the main body is two and the sliding grooves are arranged oppositely on the side wall of the main body; the straight line connecting the two piercing parts is perpendicular to the straight line connecting the two sliding grooves; The anchor hook assembly further comprises a pushing member for pushing the anchor hook; the pushing member comprises a pushing part arranged in the pushing channel and a limiting part slidable in the sliding groove; the pushing part is cylindrical; the axial direction of the pushing part is consistent with the direction from the proximal end to the distal end of the sleeve; the limiting part is sheet-shaped; the limiting part is arranged on the side wall of the pushing part along the axial direction of the pushing part; the limiting part is flush with the pushing part at both ends in the axial direction of the pushing part; the number of the limiting parts is two; the limiting parts are arranged at equal angles along the circumference of the pushing part.

2. A hooftul assembly screw conveyor apparatus, characterized by, The anchor hook assembly comprises the anchor hook assembly of claim 1, a pushing member for pushing the anchor hook, a pushing sleeve and a pushing rod; The pushing member comprises a pushing part arranged in the pushing channel and a limiting part slidable in the sliding groove; The pushing sleeve has an abutting part for abutting the pushing member; The pushing rod has a pushing connecting part detachably connected with the sleeve.

3. The grappling hook assembly auger of claim 2, wherein, The pushing sleeve is arranged outside the main body and is movably connected with the main body; The abutting part abuts the proximal end of the limiting part.

4. The anchor assembly screw conveyor of claim 3, wherein, The main body is threadedly connected with the pushing sleeve; The outer side wall of the main body is provided with a first outer thread; the inner wall of the pushing sleeve is provided with a first inner thread matched with the first outer thread.

5. The hooκ assembly screw conveyor of claim 2, wherein, The pushing connecting part is arranged at the distal end of the pushing rod and is detachably connected with the proximal end of the main body.

6. The hooκ assembly screw conveyor of claim 5, wherein, The main body is threadedly connected with the pushing rod; The proximal end of the main body is provided with a second inner thread; the distal end of the pushing rod is provided with a second outer thread matched with the second inner thread.

7. The hooκ assembly screw conveyor of claim 2, wherein, The pushing sleeve is made of soft material.

8. The anchor assembly screw conveyor of claim 2, wherein, The pushing rod is made of soft material.

9. The anchor assembly auger conveyor of claim 2, wherein, The protective hose is arranged outside the pushing sleeve.

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