Biogel delivery device

Abstract

The biological glue delivery device can be operated by one hand and comprises a cavity, a glue injection push rod, a pressing structure and a fixing piece, and a rack part is arranged on the glue injection push rod; the pressing structure comprises a sliding block, an elastic piece, a rotating rod, an elastic piece and a gland, the far end of the rotating rod is rotationally connected with the sliding block, the elastic piece is arranged at the far end of the rotating rod, the far end of the gland is rotationally connected with the cavity, the near end of the gland is rotationally connected with the near end of the rotating rod, and the gland has an open state and a closed state relative to the cavity; the fixing piece is used for locking the gland in a closed state; in response to the fact that the gland is in the closed state and is separated from the fixing piece, the elastic piece drives the sliding block to move towards the near end of the cavity, so that the near end of the rotating rod drives the elastic piece to be separated from the rack part, and the gland is reset to the open state; and in response to the gland from the open state to the closed state, the rotating rod pushes the sliding block to move towards the far end of the cavity, and the rack part propped against the elastic sheet pushes the glue injection push rod to move towards the far end of the cavity.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a bio-glue delivery device. Background Art

[0002] Varicose veins of the lower extremities are common and frequently occurring diseases in vascular surgery. This disease is mostly caused by the loss of the "one-way valve" function of the great saphenous vein valve, which causes blood to flow backwards, causing congestion in the great saphenous vein and presenting a worm-like venous mass or a purple-lined blood vessel.

[0003] Currently, the treatment of varicose veins includes: conservative treatment and surgical treatment. Conservative treatment includes: elastic stockings treatment and venous active drug treatment; surgical treatment includes: high ligation and stripping of the great saphenous vein, laser treatment of the great saphenous vein, radiofrequency closure of the great saphenous vein, and sclerotherapy and biological glue bonding therapy between the two.

[0004] At present, the bio-glue injection process is inconvenient for doctors to operate with one hand, and multiple people are needed to assist in the treatment. When using bio-glue to treat varicose veins of the lower limbs, one hand is required to hold the ultrasound probe and press the intersection of the great saphenous vein and the femoral vein, and the other hand is required to complete the injection, withdrawal, and pressing of the injection position of the bio-glue. Among them, the traditional gun-type handle is bulky, and it is necessary to hold the injection during operation, and then put down the handle to withdraw the catheter, which can easily cause the connection between the catheter and the handle to be broken. After the withdrawal is completed, it is necessary to press the injection position with your hand or ultrasound probe, which can easily cause the glue to adhere to the catheter, affecting the normal use of the catheter and increasing the operation time. Summary of the invention

[0005] Based on this, it is necessary to propose a bio-glue delivery device that can be operated with one hand.

[0006] According to one aspect of the present application, a bioglue delivery device comprises: a cavity having a proximal end and a distal end in the axial direction; a glue injection push rod which can be axially slidably arranged in the cavity, the distal and proximal ends of the glue injection push rod respectively extend out of the cavity, and the glue injection push rod is provided with a rack portion located in the cavity; a pressing structure, the pressing structure comprises a slider, an elastic member, a rotating rod, a spring sheet and a pressure cover, the slider is slidably fitted on the glue injection push rod along the axial direction, the slider and the cavity are slidably fitted along the axial direction, the elastic member is arranged between the slider and the cavity, the elastic member provides a force to move the slider toward the proximal end of the cavity, the distal end of the rotating rod is rotatably connected to the slider, the spring sheet is arranged at the distal end of the rotating rod, and the distal end of the pressure cover is rotatably connected to the cavity. The proximal end of the pressure cover is connected to the proximal end of the rotating rod so as to be relatively rotatable, and the pressure cover has an open state and a closed state relative to the cavity; a fixing member is provided at the proximal end of the cavity, and the fixing member is configured to selectively cooperate with or separate from the pressure cover, and the fixing member is used to lock the pressure cover in the closed state; wherein, when the pressure cover is in the closed state, in response to the separation of the fixing member from the pressure cover, the elastic member drives the slider to move toward the proximal end of the cavity, so that the proximal end of the rotating rod drives the spring sheet to separate from the rack portion and the pressure cover is reset to the open state; in response to the pressure cover changing from the open state to the closed state: the rotating rod pushes the slider to move toward the distal end of the cavity, the spring sheet abuts against the rack portion and pushes the injection push rod to move toward the distal end of the cavity.

[0007] In some embodiments, a mounting groove is further provided at the distal end of the cavity, wherein the mounting groove is provided with a channel connected to the internal space of the cavity, and the channel is used to assemble a syringe; the distal end of the injection push rod extends into the channel.

[0008] In some embodiments, a baffle is provided at the distal end of the injection push rod, and the baffle is used to abut against the end surface of the distal end of the cavity to limit the movement of the injection push rod toward the proximal end of the cavity.

[0009] In some embodiments, the proximal end of the injection push rod extends out of the proximal end of the cavity.

[0010] In some embodiments, the side wall of the cavity is provided with an opening; the distal end of the gland is rotatably connected to the inner wall of the distal end of the opening, and in the closed state, the gland is at least partially accommodated in the opening.

[0011] In some embodiments, a plurality of retaining walls are provided in the cavity along the axial direction, and an axial groove is provided on the top of the retaining wall; the glue injection push rod is slidably supported in the axial groove.

[0012] In some embodiments, the inner wall of the cavity is provided with three axial grooves, and the three axial grooves are spaced apart in the circumferential direction defined by the axis of the cavity. The slider is provided with three circumferential bosses, and the three circumferential bosses are slidably matched with the three axial grooves in a one-to-one correspondence.

[0013] In some embodiments, the slider is provided with two first axial bosses spaced apart from each other, the distal end of the rotating rod is provided with a second axial boss, the second axial boss is located between the two first axial bosses, and is connected to the two first axial bosses via a first pivot.

[0014] In some embodiments, a groove is provided at the distal end of the rotating rod, and the elastic sheet is clamped in the groove.

[0015] In some embodiments, the fixing member is an elastic ring that can be sleeved on the proximal end of the cavity.

[0016] When the biological glue delivery device in the present application is used, the glue injection can be achieved by continuously pressing the pressure cover with one hand, which is simple and convenient to operate.

[0017] In addition, the spring sheet is used to push the injection push rod toward the distal end of the cavity; when the elastic member drives the slider to move axially toward the proximal end of the cavity, the spring sheet can easily slide over the teeth on the input rack part and then separate from the rack part when it rotates. The spring sheet will not push the injection push rod to move, thereby avoiding damage caused by a hard collision with the rack part.

[0018] In addition, in the present application, the syringe can be fixed on the cavity, and the cavity can be held to complete the injection while being withdrawn to drive the catheter on the syringe to withdraw together. At the same time, the proximal end of the cavity can be used to press the injection site, which is convenient and quick and reduces misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of a bio-glue delivery device according to an embodiment of the present application, wherein a syringe is mounted at the distal end of the cavity.

[0020] FIG. 2 is a schematic diagram of the structure of the upper cover of the hidden cavity shown in FIG. 1 .

[0021] FIG. 3 is a schematic diagram of the structure shown in FIG. 1 further hiding the gland.

[0022] FIG. 4 is a schematic diagram of the structure of FIG. 1 in which a lower cover further hides the cavity.

[0023] FIG. 5 is a schematic diagram of the partial structure of the cavity and the mounting groove in the bio-glue delivery device according to an embodiment of the present application.

[0024] FIG. 6 is a schematic diagram of the structure of a slider in a bio-glue delivery device according to an embodiment of the present application.

[0025] FIG. 7 is a schematic diagram of the structure of a rotating rod in a bio-glue delivery device according to an embodiment of the present application.

[0026] Reference numerals:

[0027] 100, bio-glue delivery device; 10, cavity; 101, opening; 110, upper cover; 120, lower cover; 130, retaining wall; 140, axial slot; 141, first slot; 142, second slot; 150, axial groove; 20, glue injection push rod; 210, rack; 220, baffle; 230, first boss; 240, second boss; 30, pressing structure; 310, slider; 311, peripheral axial boss; 312, first axial boss; 320, elastic member; 330, rotating rod; 331, second axial boss; 332, groove; 340, spring piece; 350, gland; 40, fixing member; 510, first pivot; 520, second pivot; 530, third pivot; 60, mounting groove; 610, groove; 620, card slot; 200, syringe; 201, injection rod; 202, ear. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application.

[0030] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] As shown in Figures 1 to 4, the embodiment of the present application provides a bio-glue delivery device 100 for delivering the bio-glue in the syringe 200. Specifically, the bio-glue delivery device 100 of the present application is used to deliver the vascular sealing glue in the syringe 200 to the catheter, and then inject it into the affected part.

[0032] It should be understood that the terms "near", "back" and "distal", "front" used herein are relative to the clinician (operator) manipulating the bio-glue delivery device 100. The terms "near" and "back" refer to the part close to the clinician, and the terms "distal" and "front" refer to the part away from the clinician.

[0033] As shown in FIGS. 1 to 4 , the embodiment of the present application provides a bio-glue delivery device 100 including a cavity 10 , a glue injection push rod 20 , a pressing structure 30 and a fixing member 40 .

[0034] The cavity 10 has a proximal end and a distal end in the axial direction. The cavity 10 is hollow. Specifically in FIG1 , the axial direction is the left-right direction. The right end of the cavity 10 is the proximal end, and the left end is the distal end.

[0035] Optionally, in the present application, the cavity 10 includes an upper cover 110 and a lower cover 120 that are buckled together, and the upper cover 110 and the lower cover 120 are buckled together to enclose the internal space of the cavity 10.

[0036] The injection push rod 20 can be axially slidably disposed in the cavity 10, and the distal and proximal ends of the injection push rod 20 extend out of the cavity 10 respectively. The injection push rod 20 is provided with a rack portion 210 located in the cavity 10. The distal end of the injection push rod 20 is used to axially push the injection rod 201 of the syringe 200, so that the injection moves toward the distal end of the syringe 200, and then pushes the biological glue in the syringe 200 into the catheter (not shown).

[0037] The pressing structure 30 is used to drive the injection push rod 20 to move toward the distal end of the cavity 10, so that the injection push rod 20 pushes the injection rod 201 of the syringe 200 to move toward the distal end of the syringe 200. The pressing structure 30 includes a slider 310, an elastic member 320, a rotating rod 330, a spring 340 and a pressure cover 350.

[0038] The slider 310 is sleeved on the injection push rod 20 in an axially sliding fit, and the slider 310 and the cavity 10 are axially sliding fit. The elastic member 320 is arranged between the slider 310 and the cavity 10, and the elastic member 320 provides a force to move the slider 310 toward the proximal end of the cavity 10. The distal end of the rotating rod 330 is connected to the slider 310 so as to be relatively rotatable. The spring piece 340 is arranged at the distal end of the rotating rod 330. The distal end of the gland 350 is connected to the cavity 10 so as to be relatively rotatable, and the proximal end of the gland 350 is connected to the proximal end of the rotating rod 330 so as to be relatively rotatable, and the gland 350 has an open state and a closed state relative to the cavity 10.

[0039] In the present application, the slider 310 is sleeved on the injection push rod 20 with a gap so as to be able to slide relative to the injection push rod 20, and the slider 310 is guided and matched with the inner wall of the cavity 10. The elastic member 320 is specifically sleeved on the spring on the injection push rod 20, and is arranged between the distal end of the slider 310 and the distal end of the cavity 10. In other embodiments, the elastic member 320 can also be arranged between the proximal end of the slider 310 and the proximal end of the cavity 10. The distal end of the rotating rod 330 is rotatably connected to the slider 310 through the first pivot 510. The proximal end of the rotating rod 330 is rotatably connected to the proximal end of the pressure cover 350 through the second pivot 520. The distal end of the pressure cover 350 is rotatably connected to the cavity 10 through the third pivot 530.

[0040] The gland 350 has an open state and a closed state relative to the cavity 10. The fixing member 40 is provided at the proximal end of the cavity 10, and the fixing member 40 is configured to selectively cooperate with or separate from the gland 350, and the fixing member 40 is used to lock the gland 350 in the closed state. As shown in Figures 1 to 3, the position of the gland 350 when it is in the closed state is illustrated, and at this time, the proximal end of the gland 350 is close to the cavity 10 in the radial direction of the cavity 10. The fixing member 40 locks the proximal end of the gland 350. When the fixing member 40 no longer locks the gland 350, the gland 350 can rotate around the third pivot 530, so that the proximal end of the gland 350 can be radially away from the cavity 10, and then the gland 350 is in the open state.

[0041] Optionally, the fixing member 40 is an elastic ring that can be sleeved on the proximal end of the cavity 10. However, the fixing member 40 is not limited to a ring-shaped structure. For example, in other embodiments, the fixing member 40 can be a buckle disposed at the proximal end of the cavity 10, which can cooperate with the proximal buckle of the gland 350, thereby locking the gland 350 in a closed state.

[0042] In the present application, when the pressure cover 350 is in a closed state, in response to the separation of the fixing member 40 from the pressure cover 350, the elastic member 320 drives the slider 310 to move toward the proximal end of the cavity 10, so that the proximal end of the rotating rod 330 drives the spring piece 340 to separate from the rack portion 210 and the pressure cover 350 is reset to the open state; in response to the pressure cover 350 changing from an open state to a closed state: the rotating rod 330 pushes the slider 310 to move toward the distal end of the cavity 10, the spring piece 340 abuts against the rack portion 210 and pushes the injection push rod 20 to move toward the distal end of the cavity 10.

[0043] Specifically, referring to FIG. 1 to FIG. 3 , the working principle of the bio-glue delivery device 100 of the present application is as follows:

[0044] The initial state can be set as the pressure cover 350 being in a closed state; at this time, the elastic member 320 is in an energy storage state, and the direction of the elastic force acting on the slider 310 is toward the proximal end of the cavity 10 .

[0045] When using the bio-glue delivery device 100, first remove the fixing member 40 to unlock the gland 350. When the fixing member 40 is separated from the gland 350, the elastic member 320 drives the slider 310 to move axially toward the proximal end of the cavity 10; when the slider 310 moves axially toward the proximal end of the cavity 10, the slider 310 drives the rotating rod 330 to rotate counterclockwise around the first pivot 510, and separates the spring sheet 340 from the rack portion 210, and the rotating rod 330 causes the gland 350 to rotate counterclockwise around the third pivot 530 and reset to the open state.

[0046] In the open state, the proximal end of the cover 350 is pressed, and the cover 350 rotates clockwise around the third pivot 530, while driving the rotating rod 330 to rotate clockwise around the first pivot 510, and then the rotating rod 330 drives the slider 310 to move axially toward the distal end of the cavity 10 and compress the spring; at the same time, the spring sheet 340 rotates with the rotating rod 330 to extend between the teeth on the rack portion 210. As the proximal end of the cover 350 is continuously pressed, the spring sheet 340 will push the injection push rod 20 to move toward the distal end of the cavity 10.

[0047] It is easy to understand that before pressing the proximal end of the pressure cover 350, it should be determined whether the injection push rod 20 needs to be pulled proximally to reset it according to the position of the injection push rod 20. When the injection push rod 20 is pulled proximally, since the spring sheet 340 has been separated from the rack portion 210, it will not affect the movement of the injection push rod 20.

[0048] When the bio-glue delivery device 100 in the present application is used, the glue can be injected by continuously pressing the pressure cover 350 with one hand, which is simple and convenient to operate.

[0049] In addition, in the present application, the spring piece 340 is used to push the injection push rod 20 to move toward the distal end of the cavity 10; when the elastic member 320 drives the slider 310 to move axially toward the proximal end of the cavity 10, the spring piece 340 can easily slide over the teeth on the rack portion 210 when it rotates and then separate from the rack portion 210. The spring piece 340 will not push the injection push rod to move, thereby avoiding damage caused by a hard collision with the rack portion 210.

[0050] In some embodiments, as shown in Figures 1 and 4, in order to facilitate use with the syringe 200, the distal end of the cavity 10 is also provided with a mounting groove 60, and the mounting groove 60 is provided with a groove 610 connected to the internal space of the cavity 10, and the groove 610 is used to assemble the syringe 200; the distal end of the injection push rod 20 extends into the groove 610.

[0051] The channel 610 extends axially, and is used for inserting the proximal end of the syringe 200 and positioning the syringe 200. Furthermore, two clamping grooves 620 are provided on the inner wall of the channel 610, and the two clamping grooves 620 are used to clamp with the ear 202 at the proximal end of the syringe 200, so as to fix the syringe 200 more conveniently and reliably.

[0052] Optionally, the mounting groove 60 is integrally formed with the cavity 10. When the cavity 10 includes an upper cover 110 and a lower cover 120, the mounting groove 60 also includes two parts, which are respectively formed on the upper cover 110 and the lower cover 120.

[0053] The syringe 200 can be fixed on the cavity, so it can be withdrawn while holding the cavity to complete the injection, so as to drive the catheter on the syringe to withdraw together. At the same time, the proximal end of the cavity can also be used to press the injection site, which is convenient and fast and reduces misoperation.

[0054] In some embodiments, a baffle 220 is provided at the distal end of the glue injection push rod 20 , and the baffle 220 is used to abut against the end surface of the distal end of the cavity 10 to limit the glue injection push rod 20 from moving toward the proximal end of the cavity 10 .

[0055] As shown in FIG1 , the baffle 220 fits with the end surface of the distal end of the cavity 10 to play a limiting role. When the injection push rod 20 needs to be pulled toward the proximal end, the baffle 220 fits with the end surface of the distal end of the cavity 10 to ensure that the injection push rod 20 is successfully reset. The baffle 220 also prevents the injection push rod 20 from being accidentally pulled out from the proximal end of the cavity 10.

[0056] In some embodiments, the proximal end of the injection push rod 20 extends out of the proximal end of the cavity 10. The proximal end of the injection push rod 20 extends out of the proximal end of the cavity 10, so that the user can easily pull the injection push rod 20. Optionally, the proximal end of the injection push rod 20 is provided with a pull ring for finger insertion or gripping.

[0057] In some embodiments, as shown in FIG1 , the side wall of the cavity 10 is provided with an opening 101 . The distal end of the pressure cover 350 is rotatably connected to the inner wall of the distal end of the opening 101 , and in the closed state, the pressure cover 350 is at least partially accommodated in the opening 101 .

[0058] Specifically, the opening 101 is specifically provided on the upper cover 110. The opening 101 also provides a space for the rotation rod 330 to move. In the closed state, the pressure cover 350 is completely hidden in the opening 101, and the top surface of the pressure cover 350 is flush with the top surface of the upper cover 110, thereby reducing the volume of the device. In other embodiments, in the closed state, the pressure cover 350 may be hidden in the opening 101 only at the bottom.

[0059] In some embodiments, a plurality of retaining walls 130 are axially disposed in the cavity 10 , and an axial slot 140 is disposed on the top of the retaining wall 130 ; the injection push rod 20 is slidably supported in the axial slot 140 .

[0060] As shown in Fig. 3 and Fig. 5, the glue injection push rod 20 is slidably matched with a plurality of axial slots 140 at the same time. The shape of the axial slot 140 is consistent with the shape of the bottom of the glue injection push rod 20. Specifically, the axial slot 140 is a stepped slot, including a first slot 141 and a second slot 142 connected along the height direction of the retaining wall 130, and the area of ​​the second slot 142 is smaller than the area of ​​the first slot 141. The bottom of the glue injection push rod 20 is correspondingly provided with a first boss 230 and a second boss 240, the first boss 230 cooperates with the first slot 141, and the second boss 240 cooperates with the second slot 142, and guides the glue injection push rod 20 at the same time. In this way, the glue injection push rod 20 has better stability when sliding axially.

[0061] In some embodiments, as shown in Figures 2, 5 and 6, the inner wall of the cavity 10 is provided with three axial grooves 332150, and the three axial grooves 332150 are spaced apart in the circumferential direction defined by the axis of the cavity 10, and the slider 310 is provided with three circumferential bosses 311, and the three circumferential bosses 311 are slidably matched with the three axial grooves 332150 in a one-to-one correspondence.

[0062] The cavity 10 specifically includes an upper cover 110 and a lower cover 120. In FIG5, only one axial groove 332150 at the bottom of the lower cover 120 is illustrated. The upper cover 110 and the lower cover 120 are buckled together to form the above-mentioned other two axial grooves 332150. The three axial grooves 332150 are evenly distributed in the semicircle of the circumference of the cavity 10. The slider 310 is correspondingly provided with three circumferential bosses 311. The three circumferential bosses 311 are matched with the three axial grooves 332150 in a one-to-one correspondence.

[0063] In some embodiments, as shown in Figures 3, 6 and 7, the slider 310 is provided with two first axial bosses 312 arranged at intervals, and the distal end of the rotating rod 330 is provided with a second axial boss 331, the second axial boss 331 is located between the two first axial bosses 312, and is connected to the two first axial bosses 312 through a first pivot 510.

[0064] The two first axial bosses 312 are provided at the proximal end of the slider 310, and there is a gap between the two. The second axial boss 331 extends into the gap. The first pivot 510 is simultaneously provided through the two first axial bosses 312 and the second axial bosses 331.

[0065] As shown in FIG3 and FIG7 , a groove 332 is provided at the distal end of the rotating rod 330, and the spring piece 340 is clamped in the groove 332. The spring piece 340 is specifically arranged in an L shape. One end of the spring piece 340 is inserted and clamped in the groove 332, and the other end is suspended outside the groove 332. The spring piece 340 is connected to the rotating rod 330 in a plug-in manner, which is convenient for assembling and replacing the spring piece 340.

[0066] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0067] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0069] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A bio-glue delivery device, characterized in that: include: a cavity having a proximal end and a distal end in an axial direction; A glue injection push rod is axially slidably arranged in the cavity, the distal end and the proximal end of the glue injection push rod respectively extend out of the cavity, and the glue injection push rod is provided with a rack portion located in the cavity; A pressing structure, the pressing structure comprising a slider, an elastic member, a rotating rod, a spring sheet and a pressure cover, the slider is sleeved on the injection push rod in a sliding cooperation along the axial direction, the slider and the cavity are sliding cooperation along the axial direction, the elastic member is arranged between the slider and the cavity, the elastic member provides a force to make the slider move toward the proximal end of the cavity, the distal end of the rotating rod and the slider are connected to be relatively rotatable, the spring sheet is arranged at the distal end of the rotating rod, the distal end of the pressure cover and the cavity are connected to be relatively rotatable, the proximal end of the pressure cover and the proximal end of the rotating rod are connected to be relatively rotatable, and the pressure cover has an open state and a closed state relative to the cavity; A fixing member, disposed at the proximal end of the cavity, the fixing member being configured to selectively cooperate with or separate from the gland, and the fixing member being used to lock the gland in the closed state; Wherein, when the gland is in the closed state, in response to the fixing member being separated from the gland, the elastic member drives the slider to move toward the proximal end of the cavity, so that the proximal end of the rotating rod drives the spring sheet to separate from the rack portion, and the gland is reset to the open state; In response to the gland changing from the open state to the closed state, the rotating rod pushes the slider to move toward the far end of the cavity, and the elastic sheet abuts against the rack portion and pushes the injection push rod to move toward the far end of the cavity.

2. The bio-glue delivery device according to claim 1, characterized in that: The distal end of the cavity is also provided with a mounting groove, and the mounting groove is provided with a channel communicating with the internal space of the cavity, and the channel is used to assemble a syringe; the distal end of the injection push rod extends into the channel.

3. The bio-glue delivery device according to claim 2, characterized in that: A baffle is provided at the distal end of the injection push rod, and the baffle is used to abut against the end surface of the distal end of the cavity to limit the injection push rod from moving toward the proximal end of the cavity.

4. The bio-glue delivery device according to claim 1, characterized in that: The proximal end of the glue injection push rod extends out of the proximal end of the cavity.

5. The bio-glue delivery device according to claim 1, characterized in that: The side wall of the cavity is provided with an opening; the distal end of the gland is rotatably connected to the inner wall of the distal end of the opening, and in the closed state, the gland is at least partially accommodated in the opening.

6. The bio-glue delivery device according to claim 1, characterized in that: A plurality of retaining walls are arranged in the cavity along the axial direction, and an axial slot is arranged on the top of the retaining wall; the glue injection push rod is slidably supported in the axial slot.

7. The bio-glue delivery device according to claim 1, characterized in that: The inner wall of the cavity is provided with three axial grooves, and the three axial grooves are spaced apart in the circumferential direction defined by the axis of the cavity. The slider is provided with three circumferential bosses, and the three circumferential bosses are slidably matched with the three axial grooves in a one-to-one correspondence.

8. The bio-glue delivery device according to claim 1, characterized in that: The slider is provided with two first axial bosses which are spaced apart from each other. The distal end of the rotating rod is provided with a second axial boss. The second axial boss is located between the two first axial bosses and is connected to the two first axial bosses via a first pivot.

9. The bio-glue delivery device according to claim 1, characterized in that: The distal end of the rotating rod is provided with a groove, and the elastic sheet is clamped in the groove.

10. The bio-glue delivery device according to claim 1, characterized in that: The fixing member is an elastic ring which can be sleeved on the proximal end of the cavity.

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