Reusable proximal anastomosis combination instrument

Abstract

The present invention relates to the field of medical device technology, and in particular to a reusable proximal anastomosis assembly instrument, comprising an aortic puncher and a pusher, wherein the aortic puncher comprises a puncher housing and a punching mechanism movably arranged in the puncher housing, the punching mechanism being connected to a reset mechanism, the reset mechanism being used to reset the punching mechanism after the punching mechanism completes punching; the pusher comprises a pusher housing, a pusher tube and a pusher mechanism, a sealing assembly being arranged in the pusher tube, the pusher mechanism comprising a push state and a reset state, in which the pusher mechanism pushes the sealing assembly in the pusher tube, and in the reset state, the pusher mechanism returns to its initial state. This reusable proximal anastomosis assembly instrument of the present invention can be used for patients who require multiple coronary artery bypass grafting, and only the sealing assembly needs to be replaced to reuse the aortic puncher and the pusher to perform punching and sealing of multiple bridge vessel anastomoses, thereby greatly saving surgical costs.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a reusable proximal anastomosis assembly instrument. Background Art

[0002] During surgery, for smaller arterial defects following sharp incisions or debridement, direct end-to-end anastomosis can be performed. This procedure is often performed using a proximal aortic anastomosis device. The proximal aortic anastomosis device primarily consists of an aortic punch and a sealing assembly delivery device (the latter comprising a loading device, a delivery device, and a sealing assembly).

[0003] During the use of existing proximal aortic anastomosis instruments, the aortic punch and sealing component delivery device are both disposable tools. For some patients who need multiple coronary artery bypass grafting, in one operation, each coronary artery bypass grafting process requires end-to-end vascular anastomosis. After completing one end-to-end vascular anastomosis, a new aortic punch and sealing component delivery device need to be replaced. Therefore, for patients who need multiple coronary artery bypass grafting, multiple proximal aortic anastomosis instruments need to be used to complete one operation, which greatly increases the cost of the operation. Summary of the Invention

[0004] The present invention provides a reusable proximal anastomosis assembly instrument to solve the problem in the prior art that proximal aortic anastomosis instruments are all disposable tools, which leads to relatively high surgical costs for patients requiring multi-branch coronary artery bypass surgery. The present invention enables the proximal aortic anastomosis instrument to be reused in multi-branch coronary artery bypass surgery, thereby reducing surgical costs.

[0005] The present invention provides a reusable proximal anastomosis combination instrument, including an aortic puncher and a pusher, wherein the aortic puncher is used to punch a hole in the aorta to open an anastomosis, the aortic puncher includes a puncher shell and a punching mechanism movably arranged in the puncher shell, the punching mechanism is connected to a reset mechanism, and the reset mechanism is used to reset the punching mechanism after the punching mechanism completes the punching; the pusher is used to place a sealing component on the anastomosis opened by the aortic puncher to seal the anastomosis, the pusher includes a pusher shell, a pusher tube passing through one end of the pusher shell and a pusher mechanism arranged in the pusher shell, the sealing component is arranged in the pusher tube, and the pushing mechanism includes a pushing state and a reset state. In the pushing state, the pushing mechanism pushes the sealing component in the pusher tube, and in the reset state, the pushing mechanism returns to an initial state.

[0006] The reusable proximal anastomosis assembly device provided by the present invention further includes a crimper, which is used to crimp the sealing assembly into the push tube of the pusher.

[0007] The crimper includes a crimper housing, which is configured as an openable housing. One end of the crimper housing is provided with a mounting hole for inserting the pusher. A crimping handle is provided inside the crimper housing, and the crimping handle is located in the axial direction of the mounting hole.

[0008] According to a reusable proximal anastomosis combination instrument provided by the present invention, the punching mechanism includes a transmission core shaft, a first spring member, a puncture needle and a punching blade, the outer periphery of the transmission core shaft is provided with a protrusion, and the protrusion is engaged with the positioning groove of the inner wall of the punch housing; the first spring member is sleeved on the outer periphery of the transmission core shaft, one end of the first spring member is connected to the inner wall of the punch housing, and the other end is connected to the transmission core shaft; the first spring member stores mechanical energy so that after the protrusion disengages from the positioning groove, the transmission core shaft can move axially and circumferentially under the drive of the first spring member; the puncture needle is fixed to the center of the end face of one end of the transmission core shaft, and the punching blade is an annular blade, and the punching blade is arranged around the puncture needle.

[0009] According to a reusable proximal anastomosis combination instrument provided by the present invention, a locking plate is movably provided on the punch housing, and a through hole and a locking hole that are interconnected are constructed on the locking plate. The transmission core shaft is passed through the through hole or the locking hole, and a recessed portion is provided on the outer periphery of the transmission core shaft. The through cross-section of the transmission core shaft is adapted to the size of the through hole, and the cross-section of the recessed portion of the transmission core shaft is adapted to the size of the locking hole.

[0010] According to a reusable proximal anastomosis assembly instrument provided by the present invention, a first external thread is provided on the outer periphery of the end of the punch housing away from the puncture needle, a connecting hole is opened on the end of the transmission core shaft away from the puncture needle, and a first internal thread is provided on the inner wall of the connecting hole.

[0011] The reset mechanism includes a reset handle and a reset auxiliary nut. The reset auxiliary nut is provided with a second internal thread and a third internal thread. The end of the reset handle is provided with a second external thread. The outer peripheral surface of the reset handle is provided with a third external thread.

[0012] The first internal thread is used to cooperate with the second external thread to form a first screw-on portion, the second internal thread is used to cooperate with the first external thread to form a second screw-on portion, and the third internal thread is used to cooperate with the third external thread to form a third screw-on portion. The first screw-on portion and the second screw-on portion have the same rotation direction, and the rotation direction is opposite to that of the third screw-on portion.

[0013] According to a reusable proximal anastomosis assembly device provided by the present invention, the pushing mechanism includes a pushing shaft, a second spring member, a locking member, a guide rail sleeve, a pressure rod and a pushing handle, the first end of the pushing shaft is passed through the pushing tube; the second spring member is sleeved on the pushing shaft, one end of the second spring member is connected to the inner wall of the pusher housing, and the other end is connected to the pushing shaft; the locking member is rotatably sleeved on the second end of the pushing shaft, and a plurality of strip-shaped protrusions are distributed at intervals along the circumferential direction on the outer circumference of the locking member, and the end of the strip-shaped protrusion away from the pushing shaft is constructed as an inclined surface; the guide rail sleeve is fixed Fixed on the inner wall of the pusher housing, a plurality of guide rail grooves are distributed circumferentially inside the guide rail sleeve and cooperate with the strip-shaped protrusions, and the end of the protrusion formed between two adjacent guide rail grooves is constructed as an inclined surface that cooperates with the end face of the strip protrusion; the first end of the pressure rod is constructed with a sharp tooth protrusion along the circumferential direction, and the sharp tooth protrusion is used to cooperate with the inclined surface end of the strip protrusion so that the locking member rotates under the squeezing of the pressure rod; a plurality of guide blocks that cooperate with the guide rail grooves are distributed circumferentially on the outer circumference of the pressure rod; the pushing handle is connected to the second end of the pressure rod.

[0014] According to a reusable proximal anastomosis assembly instrument provided by the present invention, a positioning hole is provided on the push tube, and a spring pin is passed through the pusher housing and connected to the positioning hole, so that the push tube can be detachably connected to the pusher housing.

[0015] A marking line is provided on the push tube, and the marking line is aligned with the positioning hole along the axial direction of the push tube.

[0016] According to a reusable proximal anastomosis combination instrument provided by the present invention, the crimper shell includes a base plate and an upper shell detachably connected to the base plate, the base plate and the upper shell constitute an inner cavity of the crimper shell, the mounting hole is formed at one end of the inner cavity of the crimper shell, and curling operation ports are respectively formed on both sides of the inner cavity of the crimper shell away from the mounting hole, for operating the curling handle at the curling operation port.

[0017] According to a reusable proximal anastomosis combination instrument provided by the present invention, the curling handle includes an elastic tensioning part fixed on the center line of the base plate and an extrusion part respectively connected to the two ends of the elastic tensioning part. The two extrusion parts are symmetrically arranged along the center line of the base plate and are respectively located at the two curling operation ports to form a curling operation area between the two extrusion parts. Arc-surface extrusion blocks are relatively arranged on the sides of the two extrusion parts facing the curling operation area.

[0018] According to a reusable proximal anastomosis assembly instrument provided by the present invention, the outer peripheral surfaces of the aortic punch and the pusher are both detachably provided with a splash-proof protective cover, the splash-proof protective cover is a transparent acrylic disc, and the splash-proof protective cover is provided with a hydrophobic coating.

[0019] The reusable proximal anastomosis assembly instrument provided by the present invention mainly includes an aortic puncher for punching a hole in the aorta to open an anastomosis and a pusher for placing a sealing component on the anastomosis, wherein the aortic puncher and the pusher are both reusable surgical instruments. The aortic puncher punches the aorta through a punching mechanism, and after the punching is completed, the punching mechanism is reset by a reset mechanism so that the punching can be performed next time. The pusher can deliver the sealing component in the push tube into the anastomosis through the push mechanism. After the sealing component is pushed, the push mechanism can be reset to restore the initial state so that it can be used next time. This reusable proximal anastomosis assembly instrument of the present invention can be used for patients who need multiple coronary artery bypass grafting. Only the sealing component needs to be replaced to reuse the aortic puncher and the pusher to punch and seal multiple bridge vessel anastomoses, which greatly saves surgical costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the axial structure of the aorta punch provided by the present invention.

[0022] Figure 2 It is a schematic diagram of the explosion structure of the aorta punch provided by the present invention.

[0023] Figure 3 It is a structural schematic diagram of the transmission core shaft provided by the present invention.

[0024] Figure 4 It is a schematic diagram of the internal structure of the punch housing provided by the present invention.

[0025] Figure 5 It is a structural schematic diagram of the locking plate provided by the present invention.

[0026] Figure 6 It is a schematic diagram of the installation structure of the reset mechanism provided by the present invention.

[0027] Figure 7 It is a schematic diagram of the reset principle of the reset mechanism provided by the present invention.

[0028] Figure 8 It is a schematic diagram of the axial side structure of the pusher provided by the present invention.

[0029] Figure 9 It is a schematic diagram of the explosion structure of the pusher provided by the present invention.

[0030] Figure 10 It is a structural schematic diagram of the guide rail sleeve provided by the present invention.

[0031] Figure 11 It is a structural schematic diagram of the pressure rod provided by the present invention.

[0032] Figure 12 It is a structural schematic diagram of the locking member provided by the present invention.

[0033] Figure 13 It is a schematic diagram of the axial side structure of the crimper provided by the present invention.

[0034] Figure 14 It is a schematic diagram of the coordinated structure of the crimper and pusher provided by the present invention.

[0035] Figure 15 It is a schematic diagram of the explosion structure of the crimper provided by the present invention.

[0036] Figure 16 It is a schematic diagram of the axial side structure of the curling handle provided by the present invention.

[0037] Reference numerals: 1. aortic puncher; 11. puncher housing; 111. positioning groove; 12. punching mechanism; 121. transmission spindle; 1211. raised portion; 1212. recessed portion; 1213. connecting hole; 122. first spring member; 123. puncture needle; 124. punching blade; 125. locking plate; 1251. through-hole; 1252. locking hole; 13. reset mechanism; 131. reset handle; 132. reset auxiliary nut; 133. first screw connection; 134. second screw connection; 135. third screw connection; 2. pusher; 21. Pusher housing; 22. Pusher tube; 221. Positioning hole; 222. Marking line; 23. Pusher mechanism; 231. Pusher shaft; 232. Second spring member; 233. Locking member; 234. Guide rail sleeve; 235. Pressure rod; 236. Pusher handle; 24. Spring pin; 3. Sealing assembly; 4. Crimper; 41. Crimper housing; 411. Bottom plate; 412. Upper shell; 42. Mounting hole; 43. Crimping handle; 431. Elastic tensioning portion; 432. Extrusion portion; 433. Arc-surface extrusion block; 44. Crimping operation port; 5. Splash-proof protective cover. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0039] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the embodiments of the present invention.

[0040] In describing the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0041] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature 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. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0043] The following combination Figures 1 to 16 The specific structure and working principle of the reusable proximal anastomosis assembly instrument of the present invention are described.

[0044] One embodiment of the present invention provides a reusable proximal anastomosis assembly instrument, comprising Figure 1 The aortic punch 1 and Figure 8 The pusher 2 shown in FIG. 1 and the aortic punch 1 are used to punch a hole in the aorta to create an anastomosis. Figure 2 As shown, the aortic puncher 1 includes a puncher housing 11 and a punching mechanism 12 movably arranged in the puncher housing 11. The punching mechanism 12 is connected to a reset mechanism 13. The reset mechanism 13 is used to reset the punching mechanism 12 after the punching mechanism 12 completes the punching. The pusher 2 is used to place the sealing component 3 on the anastomosis opened by the aortic puncher 1 to seal the anastomosis. Figure 9 As shown, the pusher 2 includes a pusher housing 21, a pusher tube 22 passing through one end of the pusher housing 21, and a pusher mechanism 23 arranged in the pusher housing 21. A sealing component 3 is arranged in the pusher tube 22. The pusher mechanism 23 includes a pushing state and a reset state. In the pushing state, the pusher mechanism 23 pushes the sealing component 3 in the pusher tube 22. In the reset state, the pusher mechanism 23 returns to its initial state.

[0045] It is understandable that the reusable proximal anastomosis assembly instrument of this embodiment mainly includes an aortic puncher 1 for punching a hole in the aorta to open an anastomosis and a pusher 2 for placing a sealing component 3 on the anastomosis. The aortic puncher 1 and the pusher 2 are both reusable surgical instruments. The aortic puncher 1 punches the aorta through a punching mechanism 12. After the punching is completed, the punching mechanism 12 is reset by a reset mechanism 13 so that the punching can be performed next time. The pusher 2 can push the sealing component 3 in the push tube 22 into the anastomosis through a push mechanism 23. After the sealing component 3 is pushed, the push mechanism 23 can be reset to its initial state so that it can be used next time. The reusable proximal anastomosis assembly instrument of this embodiment can be used for patients who need multiple coronary artery bypass grafting. Only the sealing component 3 needs to be replaced to reuse the aortic puncher 1 and the pusher 2 to punch and seal multiple bridge vessel anastomoses, which greatly saves surgical costs.

[0046] In some embodiments of the reusable proximal anastomosis assembly instrument of the present invention, the assembly instrument further comprises Figure 13 The crimper 4 shown is used to crimp the sealing assembly 3 into the push tube 22 of the pusher 2. Specifically, the crimper 4 includes a crimper housing 41, which is configured as an openable housing. One end of the crimper housing 41 is provided with a mounting hole 42 for inserting the pusher 2. A crimping handle 43 is provided inside the crimper housing 41 and is located in the axial direction of the mounting hole 42.

[0047] It is understood that the crimper 4 of this embodiment can be used to crimp the sealing component 3 and then send it into the push tube 22 of the pusher 2, so that the pusher 2 can place the sealing component 3 at the anastomosis to achieve sealing. It should be understood that the sealing component 3 used in the present invention includes a metal expansion rod that can be rolled and folded and a sealing umbrella connected to both ends of the metal expansion rod. When the metal expansion rod is expanded, the sealing umbrella is opened to achieve sealing of the anastomosis. The sealing component 3 is an existing device, and its structure can be seen in Figure 14 , and no detailed description is given here.

[0048] In some specific embodiments of the reusable proximal anastomosis assembly device of the present invention, the punching mechanism 12 includes a drive core shaft 121, a first spring member 122, a puncture needle 123 and a punching blade 124, see Figure 3 As shown, the outer periphery of the transmission core shaft 121 is provided with a protrusion 1211, and the protrusion 1211 is engaged with the positioning groove 111 on the inner wall of the punch housing 11 (see Figure 4As shown); the first spring member 122 is sleeved on the outer circumference of the transmission core shaft 121, one end of the first spring member 122 is connected to the inner wall of the punch housing 11, and the other end is connected to the transmission core shaft 121; the first spring member 122 stores mechanical energy so that after the protrusion 1211 is separated from the positioning groove 111, the transmission core shaft 121 can move axially and circumferentially under the drive of the first spring member 122; the puncture needle 123 is fixed to the center of the end face of one end of the transmission core shaft 121, and the punching blade 124 is an annular blade, and the punching blade 124 is arranged around the puncture needle 123.

[0049] It is understandable that in the punching mechanism 12 of this embodiment, in the initial state, the transmission core shaft 121 is engaged with the positioning groove 111 on the inner wall of the punch housing 11 through the protrusion 1211 provided on the periphery, thereby positioning the transmission core shaft 121. The first spring member 122 on the transmission core shaft 121 has obtained a certain torque through reverse rotation, and is in a state of enlarged diameter and shortened length. When using the aortic puncher 1 for punching, after finding the punching position, the puncture needle 123 at the end of the transmission core shaft 121 is inserted into the aorta and positioned at the expected anastomotic position; then, the circumferential position of the transmission core shaft 121 is adjusted so that the protrusion 1211 of the transmission core shaft 121 is disengaged from the positioning groove 111 on the inner wall of the punch housing 11, and the transmission core shaft 121 is freed from the restriction of the punch housing 11. The torque in the first spring member 122 is released, and the transmission core shaft 121 rotates and moves axially along with the first spring member 122 . The punching blade 124 at the end of the transmission core shaft 121 rotates downward to cut the aorta to achieve anastomotic perforation.

[0050] In some specific examples, a locking plate 125 is movably provided on the punch housing 11, see Figure 5As shown, the locking plate 125 is constructed with a through hole 1251 and a locking hole 1252 that are interconnected. The transmission core shaft 121 is inserted into the through hole 1251 or the locking hole 1252. A recessed portion 1212 is provided on the outer periphery of the transmission core shaft 121. The through cross section of the transmission core shaft 121 is adapted to the size of the through hole 1251, and the cross section of the recessed portion 1212 of the transmission core shaft 121 is adapted to the size of the locking hole 1252. It can be understood that the locking plate 125 in this example is used to lock the position of the transmission core shaft 121. In the initial state, the locking plate 125 and the transmission core shaft 121 are in a locked state. The transmission core shaft 121 is inserted into the locking plate 125, and the recessed portion 1212 of the transmission core shaft 121 is engaged with the locking hole 1252 on the locking plate 125, so that the transmission core shaft 121 cannot rotate. When punching is required, the locking plate 125 is pulled outward on the punch housing 11 so that the recessed portion 1212 of the transmission core shaft 121 is in the through hole 1251 on the locking plate 125. Since the inner diameter of the through hole 1251 is larger than the size of the recessed portion 1212 of the transmission core shaft 121, the locking plate 125 can no longer lock the transmission core shaft 121. When the protrusion 1211 on the outer periphery of the transmission core shaft 121 is disengaged from the positioning groove 111, the transmission core shaft 121 can move axially and circumferentially under the drive of the first spring member 122.

[0051] After the aortic anastomosis is punched through the punching mechanism 12 of the aortic puncher 1, the punching mechanism 12 needs to be reset through the reset mechanism 13. In some embodiments of the reusable proximal anastomosis assembly instrument of the present invention, a first external thread is provided on the outer periphery of the end of the puncher housing 11 away from the puncture needle 123, a connecting hole 1213 is provided on the end of the transmission core shaft 121 away from the puncture needle 123, and a first internal thread is provided on the inner wall of the connecting hole 1213. The reset mechanism 13 includes a reset handle 131 and a reset auxiliary nut 132. The reset auxiliary nut 132 is provided with a second internal thread and a third internal thread. The end of the reset handle 131 is provided with a second external thread, and the outer peripheral surface of the reset handle 131 is provided with a third external thread. See Figure 6 As shown, the first internal thread is used to cooperate with the second external thread to form a first screw-on portion 133, the second internal thread is used to cooperate with the first external thread to form a second screw-on portion 134, and the third internal thread is used to cooperate with the third external thread to form a third screw-on portion 135. The first screw-on portion 133 and the second screw-on portion 134 have the same rotation direction and are opposite to the rotation direction of the third screw-on portion 135.

[0052] It is understandable that after completing the first punching, when punching is required again, the punching mechanism 12 needs to be reset for reuse. Figure 6 and Figure 7As shown, in the first step, the reset handle 131 and the reset auxiliary nut 132 are assembled, and the third internal thread of the reset auxiliary nut 132 cooperates with the third external thread of the reset handle 131 to form a third screw-on portion 135, so that the reset auxiliary nut 132 is screwed counterclockwise to the upper part of the reset handle 131; the second step is to cooperate with the second internal thread of the reset auxiliary nut 132 and the first external thread of the punch housing 11 to form a second screw-on portion 134, and the reset auxiliary nut 132 is tightened clockwise on the threaded connection part of the punch housing 11; the third step is to rotate the reset handle 131 clockwise to make it screw-on with the transmission core shaft 121, that is, the first internal thread is used to cooperate with the second external thread to form a first screw-on portion 133; the fourth step is to continue to rotate the reset handle 131 clockwise and pull it up slightly at the same time. At this time, due to the reset auxiliary nut 132 The end of the punch housing 11 is fixed, and under the action of the third screw connection 135, the reset handle 131 moves outward relative to the reset auxiliary nut 132. At the same time, during the rotation of the reset handle 131, the transmission spindle 121 is driven by the reset handle 131 to rotate and rise at a fixed pitch, thereby restoring the first spring member 122 to the punch state. In the fifth step, when the external thread of the reset handle 131 is screwed out of the internal thread of the reset auxiliary nut 132, the transmission spindle 121 is carefully positioned and gently pulled so that the protrusion 1211 on the transmission spindle 121 is just stuck in the positioning groove 111, pushing the locking plate 125 to lock the transmission spindle 121. In the sixth step, the reset auxiliary nut 132 is rotated counterclockwise to unscrew it from the punch housing 11, and the reset handle 131 is simultaneously rotated counterclockwise to unscrew it from the transmission spindle 121. At this point, the punching mechanism 12 is reset, and the first spring member 122 has completed the torque energy storage again, ready for the next punching.

[0053] Furthermore, the punch housing 11 is also equipped with a kill button. After the last punching operation is completed and no further punching operations are to be performed, the kill button on the punch housing 11 can be pressed to disable the device's function once and for all to avoid cross-use. During normal operation, the kill button is located outside the drive shaft 121, which can move up and down normally. When the kill button is pressed, it moves inward and is located in the up and down movement path of the drive shaft 121. At this time, the drive shaft 121 cannot be reset and fixed, and the aortic punch 1 cannot function normally, thus achieving the self-destruction function.

[0054] In other embodiments of the reusable proximal anastomosis assembly device of the present invention, Figure 8 and Figure 9As shown, the pushing mechanism 23 includes a pushing shaft 231, a second spring member 232, a locking member 233, a guide rail sleeve 234, a pressure rod 235 and a pushing handle 236. The first end of the pushing shaft 231 is passed through the pushing tube 22; the second spring member 232 is sleeved on the pushing shaft 231, one end of the second spring member 232 is connected to the inner wall of the pusher housing 21, and the other end is connected to the pushing shaft 231; the locking member 233 is rotatably sleeved on the second end of the pushing shaft 231, and a plurality of strip-shaped protrusions are distributed along the circumferential direction on the outer periphery of the locking member 233. The end of the strip-shaped protrusion away from the pushing shaft 231 is constructed as an inclined surface; the guide rail sleeve 234 is fixed to the inner wall of the pusher housing 21, and a plurality of guide rail grooves that cooperate with the strip-shaped protrusions are distributed circumferentially inside the guide rail sleeve 234, and the end of the protrusion formed between two adjacent guide rail grooves is constructed as an inclined surface that cooperates with the end face of the strip-shaped protrusion; the first end of the pressure rod 235 is constructed with a sharp tooth protrusion along the circumferential direction, and the sharp tooth protrusion is used to cooperate with the inclined surface end of the strip-shaped protrusion so that the locking member 233 rotates under the squeezing of the pressure rod 235; a plurality of guide blocks that cooperate with the guide rail grooves are distributed circumferentially on the outer circumferential surface of the pressure rod 235; the pushing handle 236 is connected to the second end of the pressure rod 235.

[0055] It is understood that after the anastomosis is punched using the aortic punch 1, the sealing assembly 3 is inserted through the pusher 2 to seal the anastomosis. In this embodiment, after the anastomosis is formed, the pusher 2 with the sealing assembly 3 inserted is held and aimed at the anastomosis at a certain angle. The finger pressing the anastomosis is removed and the push handle 236 is pressed forward to push the sealing assembly 3 in the push tube 22 into the anastomosis via the push shaft 231. The sealing assembly 3 separated from the push tube 22 will be tensioned by its own elastic components and reopened in the aorta. Under the blood pressure in the aorta, it will adhere to the aortic wall, forming a sealed area for anastomosis of the target blood vessel.

[0056] It should be understood that in this embodiment, by pressing the push handle 236 forward, the sealing assembly 3 in the push tube 22 can be sent into the anastomosis through the push shaft 231. Figure 10 、 Figure 11 and Figure 12 As shown, the pushing handle 236 is pressed, and the pushing handle 236 acts on the pressure rod 235. The guide blocks distributed circumferentially on the pressure rod 235 move in the guide grooves in the guide sleeve 234. The sharp teeth constructed along the circumference of the first end of the pressure rod 235 act on the multiple strip-shaped protruding inclined surfaces on the periphery of the locking member 233, causing the locking member 233 to rotate. The strip-shaped protrusion of the locking member 233 cooperates with the inclined surface at the end of the protrusion formed between the two guide grooves of the guide sleeve 234, causing the locking member 233 to move forward, pushing the pushing shaft 231 and compressing the second spring member 232. The pushing shaft 231 pushes the sealing component 3 in the pushing tube 22, and sends the sealing component 3 from the pushing tube 22 into the anastomotic opening.

[0057] After the sealing assembly 3 is pushed into the anastomosis, the pushing handle 236 is pressed again. Figure 10 、 Figure 11 and Figure 12 As shown, the pushing handle 236 acts on the pressure rod 235, and the sharp tooth protrusion constructed along the circumference of the first end of the pressure rod 235 continues to act on the multiple strip-shaped protrusion inclined surfaces on the periphery of the locking member 233, so that the locking member 233 rotates, and the strip-shaped protrusion of the locking member 233 enters the guide rail groove in the guide rail sleeve 234. Under the reset action of the second spring member 232, the pushing shaft 231, the locking member 233 and the pressure rod 235 are pushed back to realize the reset of the pushing mechanism 23. At this time, the sealing assembly 3 can be placed back in the pushing tube 22 for the next time the pusher 2 is used to push the sealing assembly 3 to seal the anastomosis.

[0058] In some examples, a positioning hole 221 is provided on the push tube 22, and a spring pin 24 is provided on the pusher housing 21 to cooperate with the positioning hole 221, so that the push tube 22 can be detachably connected to the pusher housing 21. A marking line 222 is provided on the push tube 22, and the marking line 222 is aligned with the positioning hole 221 along the axial direction of the push tube 22. It is understandable that in this example, the push tube 22 can be pulled out from the push mechanism 23, and the sealing assembly 3 is curled into the push tube 22 to form a new set of sealing parts. The new set of sealing parts is inserted into the push mechanism 23. During the insertion process, the marking line 222 on the push tube 22 is aligned with the spring pin 24 on the pusher housing 21 until the spring pin 24 is engaged with the positioning hole 221 on the push tube 22, thus completing the reset installation of the push mechanism 23.

[0059] In other embodiments of the reusable proximal anastomosis assembly device of the present invention, see Figure 15 As shown, the curler housing 41 includes a base plate 411 and an upper shell 412 detachably connected to the base plate 411. The base plate 411 and the upper shell 412 constitute an inner cavity of the curler housing 41. A mounting hole 42 is formed at one end of the inner cavity of the curler housing 41. Curling operation ports 44 are respectively formed on both sides of the inner cavity of the curler housing 41 away from the mounting hole 42, which are used to operate the curling handle 43 at the curling operation port 44.

[0060] Understandably, see Figure 14As shown, the sealing assembly 3 is located within the push tube 22 before being crimped (with the metal expansion rod retracted within the tube and the sealing umbrella open externally), and the pusher 2 is pre-installed within the crimper 4. The sides of the crimping handles 43 are pressed inward from the crimping operation ports 44 on both sides of the crimper 4, and the sealing umbrella of the sealing assembly 3 is curled via the crimping handles 43. Maintaining the crimping handles 43 in place, the pusher 2 moves within the mounting hole 42 toward the inner cavity of the crimper housing 41, allowing the curled sealing umbrella of the sealing assembly 3 to be placed within the push tube 22 of the pusher 2, completing a new round of installation of the sealing assembly 3 within the pusher 2.

[0061] Specifically, see Figure 16 As shown, the curling handle 43 includes an elastic tensioning portion 431 fixed on the center line of the base plate 411 and an extrusion portion 432 respectively connected to both ends of the elastic tensioning portion 431. The two extrusion portions 432 are symmetrically arranged along the center line of the base plate 411 and are respectively located at the two curling operation ports 44, so that a curling operation area is formed between the two extrusion portions 432. Arc-surface extrusion blocks 433 are relatively arranged on the sides of the two extrusion portions 432 facing the curling operation area.

[0062] It is understood that after the first curling of the sealing umbrella of the sealing assembly 3 is completed, when the second set of curling of the sealing umbrella of the sealing assembly 3 is required, the upper shell 412 of the curler 4 needs to be disassembled from the bottom plate 411 and placed in the reset pusher 2, and the upper shell 412 is re-covered to perform the curling operation again. The metal expansion rod of the sealing assembly 3 is folded and placed in the push tube 22 of the pusher 2. The sealing umbrella of the sealing assembly 3 is located in the curling operation area between the two squeezing parts 432 of the curling handle 43. After the two squeezing parts 432 are pressed, the two opposing arc-shaped squeezing blocks 433 squeeze and curl the sealing umbrella of the sealing assembly 3, and then enter the push tube 22 when the pusher 2 moves forward, completing the curling installation of the sealing assembly 3 in the pusher 2.

[0063] Based on the structures of the above-mentioned embodiments and examples, in other embodiments of the reusable proximal anastomosis combination instrument of the present invention, a splash-proof protective cover 5 can be detachably provided on the outer peripheral surfaces of the aortic puncher 1 and the pusher 2. The splash-proof protective cover 5 is a transparent acrylic disc and is provided with a hydrophobic coating.

[0064] It is understandable that the splash shield 5 can allow the splashed blood to flow down the surface of the splash shield 5 quickly without forming any droplets that block the field of vision. Figure 1 As shown, a splash shield 5 is vertically installed on the outer peripheral surface of the aortic punch 1 near the punching end. During the punching process of the aortic punch 1, a small amount of blood will splash out. At this time, the splash shield 5 can prevent the sprayed blood from splashing onto the operator's face or body, causing occupational exposure risks. Similarly, see Figure 8 As shown, a splash shield 5 is detachably connected to the push tube 22 of the pusher 2 at a certain angle to prevent blood from splashing when pushing the sealing assembly 3. The provision of the splash shield 5 in this embodiment effectively prevents blood from splashing during aortic puncture and sealing assembly placement, greatly protecting the operator from exposure risks and ensuring a clear surgical field of view.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A reusable proximal anastomosis assembly device, characterized in that: include: An aortic puncher (1) is used for punching a hole in the aorta to create an anastomosis. The aortic puncher (1) comprises a puncher housing (11) and a punching mechanism (12) movably arranged in the puncher housing (11). The punching mechanism (12) is connected to a reset mechanism (13). The reset mechanism (13) is used to reset the punching mechanism (12) after the punching mechanism (12) completes the punching. The punching mechanism (12) comprises a transmission core shaft (121), a first spring member (122), a puncture needle (123) and a punching blade (124). The transmission core shaft (121) is provided with a protrusion (1211) on its outer periphery. The protrusion (1211) is engaged with the inner wall of the puncher housing (11). The first spring member (122) is sleeved on the outer periphery of the transmission core shaft (121), one end of the first spring member (122) is connected to the inner wall of the punch housing (11), and the other end is connected to the transmission core shaft (121); the first spring member (122) stores mechanical energy so that after the protrusion (1211) is separated from the positioning groove (111), the transmission core shaft (121) can move in the axial and circumferential directions under the drive of the first spring member (122); the puncture needle (123) is fixed to the center of the end face of one end of the transmission core shaft (121), and the punching blade (124) is an annular blade, and the punching blade (124) is arranged around the puncture needle (123); A pusher (2) is used to place a sealing component (3) on the anastomosis opened by the aortic punch (1) to seal the anastomosis. The pusher (2) includes a pusher shell (21), a pusher tube (22) passing through one end of the pusher shell (21), and a pusher mechanism (23) arranged in the pusher shell (21). The pusher tube (22) is provided with the sealing component (3). The pusher mechanism (23) includes a push state and a reset state. In the push state, the pusher mechanism (23) pushes the sealing component (3) in the pusher tube (22). In the reset state, the pusher mechanism (23) returns to its initial state.

2. The reusable proximal anastomosis assembly according to claim 1, characterized in that: It also includes a crimper (4), which is used to crimp the sealing assembly (3) into the push tube (22) of the pusher (2); The crimper (4) includes a crimper housing (41), which is configured as an openable housing. One end of the crimper housing (41) is provided with a mounting hole (42) for inserting the pusher (2). A crimping handle (43) is provided inside the crimper housing (41), and the crimping handle (43) is located in the axial direction of the mounting hole (42).

3. The reusable proximal anastomosis assembly device according to claim 1, characterized in that: A locking plate (125) is movably provided on the punch housing (11), and a through hole (1251) and a locking hole (1252) are constructed on the locking plate (125), which are interconnected. The transmission core shaft (121) is provided through the through hole (1251) or the locking hole (1252), and a recessed portion (1212) is provided on the outer periphery of the transmission core shaft (121). The through cross section of the transmission core shaft (121) is adapted to the size of the through hole (1251), and the cross section of the recessed portion (1212) of the transmission core shaft (121) is adapted to the size of the locking hole (1252).

4. The reusable proximal anastomosis assembly according to claim 3, characterized in that: A first external thread is provided on the outer periphery of the end of the punch housing (11) away from the puncture needle (123); a connecting hole (1213) is provided on the end of the transmission core shaft (121) away from the puncture needle (123); and a first internal thread is provided on the inner wall of the connecting hole (1213); The reset mechanism (13) comprises a reset handle (131) and a reset auxiliary nut (132); a second internal thread and a third internal thread are provided inside the reset auxiliary nut (132); a second external thread is provided at the end of the reset handle (131); and a third external thread is provided on the outer peripheral surface of the reset handle (131); The first internal thread is used to cooperate with the second external thread to form a first screw-on portion (133), the second internal thread is used to cooperate with the first external thread to form a second screw-on portion (134), and the third internal thread is used to cooperate with the third external thread to form a third screw-on portion (135). The first screw-on portion (133) and the second screw-on portion (134) have the same rotation direction, and the rotation direction is opposite to that of the third screw-on portion (135).

5. The reusable proximal anastomosis assembly device according to claim 1, characterized in that: The pushing mechanism (23) comprises: A pushing shaft (231), wherein a first end portion of the pushing shaft (231) is passed through the pushing tube (22); a second spring member (232), the second spring member (232) being sleeved on the pushing shaft (231), one end of the second spring member (232) being connected to the inner wall of the pusher housing (21), and the other end being connected to the pushing shaft (231); A locking member (233), the locking member (233) being rotatably fitted on the second end of the pushing shaft (231), a plurality of strip-shaped protrusions being distributed at intervals along the circumferential direction on the outer periphery of the locking member (233), and the ends of the strip-shaped protrusions away from the pushing shaft (231) being constructed as inclined surfaces; A guide rail sleeve (234), the guide rail sleeve (234) is fixed to the inner wall of the pusher housing (21), a plurality of guide rail grooves are distributed circumferentially and matched with the strip-shaped protrusions, and the end of the protrusion formed between two adjacent guide rail grooves is constructed as an inclined surface that matches the end face of the strip-shaped protrusion; A pressure rod (235), wherein a first end portion of the pressure rod (235) is formed with a sharp tooth protrusion along the circumferential direction, and the sharp tooth protrusion is used to cooperate with the inclined surface end portion of the strip-shaped protrusion, so that the locking member (233) rotates under the squeezing of the pressure rod (235); a plurality of guide blocks that cooperate with the guide rail groove are distributed at intervals along the circumferential direction on the outer circumferential surface of the pressure rod (235); A pushing handle (236) is connected to the second end of the pressing rod (235).

6. The reusable proximal anastomosis assembly device according to claim 5, characterized in that: A positioning hole (221) is provided on the push tube (22), and a spring pin (24) is provided on the pusher housing (21) and is connected to the positioning hole (221), so that the push tube (22) can be detachably connected to the pusher housing (21); A marking line (222) is provided on the push tube (22), and the marking line (222) is aligned with the positioning hole (221) along the axial direction of the push tube (22).

7. The reusable proximal anastomosis assembly device according to claim 2, characterized in that: The curler housing (41) includes a base plate (411) and an upper shell (412) detachably connected to the base plate (411); the base plate (411) and the upper shell (412) form an inner cavity of the curler housing (41); one end of the inner cavity of the curler housing (41) forms the mounting hole (42); curling operation ports (44) are respectively formed on both sides of the inner cavity of the curler housing (41) away from the mounting hole (42), for operating the curling handle (43) at the curling operation port (44).

8. The reusable proximal anastomosis assembly device according to claim 7, characterized in that: The curling handle (43) comprises an elastic tensioning portion (431) fixed on the center line of the base plate (411) and extrusion portions (432) respectively connected to both ends of the elastic tensioning portion (431). The two extrusion portions (432) are symmetrically arranged along the center line of the base plate (411) and are respectively located at the two curling operation ports (44) so ​​that a curling operation area is formed between the two extrusion portions (432). Arc-surface extrusion blocks (433) are relatively arranged on the sides of the two extrusion portions (432) facing the curling operation area.

9. The reusable proximal anastomosis assembly according to any one of claims 1 to 8, characterized in that: The outer circumferences of the aortic puncher (1) and the pusher (2) are both detachably provided with a splash-proof protective cover (5), the splash-proof protective cover (5) being a transparent acrylic disc and provided with a hydrophobic coating.

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