Needle removal device and suturing device system

Abstract

A needle removal device and a suturing device system, the needle removal device comprising: a handle, a guide member and a puncture needle. The handle comprises a top cover and a bottom cover which are movably connected, and the top cover and the bottom cover enclose an assembly cavity in the handle. The guide member is located in the assembly cavity, and the guide member and the top cover are fixedly connected. The puncture needle is configured as at least two, and the puncture needle is fixed to the guide member. The top cover is used to move relative to the bottom cover to drive the puncture needle in the assembly cavity to move. A plurality of puncture needles are fixed to the guide member, and the guide member is fixed to the top cover. The top cover and the bottom cover are movably connected, and the top cover can be moved relative to the bottom cover to synchronously drive the plurality of puncture needles on the guide member to move, thereby achieving synchronous needle removal, improving the use efficiency of the needle removal device, shortening the operation time, and improving the success rate of the operation.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a needle removal device and a stapler system. Background Art

[0002] The foramen ovale is a physiological channel in the atrial septum of the heart during the embryonic period. In most cases, the foramen ovale closes on its own within one year after birth. For those who fail to close, a potential channel is formed in the middle of the atrial septum, namely patent foramen ovale (PFO). Patent foramen ovale (PFO) requires surgical suture to close the foramen ovale.

[0003] The existing foramen ovale suture device requires multiple punctures and sutures to completely close the foramen ovale in order to ensure the suturing effect. However, such multiple suturings prolong the operation time, which undoubtedly increases the risk of the operation. Summary of the invention

[0004] The present application provides a needle removal device and a suturing device system, the main purpose of which is to achieve synchronous needle removal.

[0005] An embodiment of the present application provides a needle removal device, characterized in that it includes:

[0006] A handle, comprising a top cover and a bottom cover that are movably connected, wherein the top cover and the bottom cover enclose an assembly cavity in the handle;

[0007] A guide member is located in the assembly cavity, and the guide member is fixedly connected to the top cover; and

[0008] a puncture needle, configured as at least two, wherein the puncture needle is fixed to the guide member;

[0009] The top cover is used to move relative to the bottom cover to drive the puncture needle in the assembly cavity to move.

[0010] It also includes a pushing body, a locking piece and at least two locking strips, the pushing body is fixed to the guide piece, and the locking strip is fixed to the pushing body; the locking piece has a first state and a second state, in the first state, the locking piece is used to lock at least two of the locking strips at the same time, and in the second state, the locking piece is used to release the lock of at least two of the locking strips.

[0011] Wherein, the locking member includes a locking rod and a slider pressure plate; a locking hole is provided on the top cover, the slider pressure plate is located in the assembly cavity, part of the locking rods pass through the locking hole and are threadedly connected to the slider pressure plate, and the rest of the locking rods are placed outside the assembly cavity; in the first state, the slider pressure plate and at least two of the locking strips are abutted, and in the second state, the slider pressure plate and at least two of the locking strips are separated, and the locking rod is used to change the position of the slider pressure plate relative to the at least two locking strips by rotation.

[0012] Among them, it also includes a limit block, a slide groove is provided in the top cover, the slider pressure plate and the slide groove are slidably connected, the locking strip is located between the slider pressure plate and the locking hole, and the limit block is fixed in the slide groove on the side of the slider pressure plate away from the locking strip; and / or, it also includes a knob, the knob is located outside the assembly cavity, the knob is connected to the locking rod; an annular track is provided in the locking hole, and a part of the structure of the knob can be rotatably placed in the annular track.

[0013] Wherein, the guide member comprises a first plate body, a second plate body, a third plate body and a cone body, and the cone body is fixed to a side of the first plate body away from the second plate body;

[0014] The pushing body comprises a first pushing body and a second pushing body, the first pushing body and the second pushing body are each configured in two pieces, and the locking strip is fixed on both the first pushing body and the second pushing body;

[0015] At least one first push shaft is disposed on the first push body, the first push body can be movably sleeved on the first push shaft, and two ends of the first push shaft are respectively fixed to the first plate body and the second plate body;

[0016] At least one second push shaft is disposed on the second push body, the second push body can be movably sleeved on the second push shaft, and two ends of the second push shaft are respectively fixed to the second plate body and the third plate body;

[0017] The puncture needle is fixed on the same side of the first pushing body and the second pushing body close to the cone, and one end of the puncture needle away from the third plate body penetrates into the cone, and the cone is used to guide the puncture needle into the main body tube;

[0018] The top cover is provided with a plurality of adjustment holes, and push rods are fixed to the first pushing body and the second pushing body on the side facing the top cover, the number of the adjustment holes and the number of the push rods are arranged in a one-to-one correspondence, and one end of the push rod away from the bottom cover passes through the adjustment hole and is placed outside the assembly cavity, and the push rod located outside the assembly cavity is used to move the puncture needle.

[0019] Wherein, the two first pushers and the two second pushers are symmetrically distributed on both sides of the axis of the cone;

[0020] The first pusher and the second pusher both include a main body block and an additional block, the main body block has a head end and a tail end, the head end is located near the top cover, and the tail end is located near the bottom cover;

[0021] The additional block on the first pusher is fixed to the side wall of the main block close to the head end, and the additional blocks on the two first pushers are located on the side walls of the two first pushers close to each other;

[0022] The additional block on the second pusher is fixed to the side wall of the main block close to the tail end, and the additional blocks on the two second pushers are located on the side walls of the two second pushers close to each other;

[0023] The additional block is provided with a through hole, and one end of the puncture needle is fixed in the through hole.

[0024] Among them, one end of the locking strip on the first pushing body is fixed to the end surface of the additional block close to the top cover; one end of the locking strip on the second pushing body is fixed to the end surface of the main block close to the top cover; multiple locking strips are arranged side by side in the assembly cavity, the locking piece is located on the side away from the conical body, and the locking piece and the guide piece are distributed at intervals.

[0025] Wherein, the guide member also includes a connecting plate, the first plate body, the second plate body and the third plate body are parallel to each other, the connecting plate and the first plate body are perpendicular, the connecting plate is arranged between the first plate body and the second plate body and between the second plate body and the third plate body, the connecting plate is provided with a convex plate on the side facing the top cover, the top cover is provided with a fixing groove, and the convex plate is fixed in the fixing groove; and / or, a guiding structure is arranged between the guide member and the bottom cover.

[0026] Among them, it also includes a plurality of push buttons, the number of which is arranged in one-to-one correspondence with the number of the push rods; the push buttons are fixed to the push rods located outside the assembly cavity, and the push buttons can cover the adjustment holes.

[0027] Wherein, button assemblies are symmetrically arranged on the side walls of both sides of the top cover, and the button assemblies include a button plate, an elastic member and a limit member, a first tooth portion is arranged on the side of the button plate away from the top cover, and a plurality of movable rods are arranged on the side of the button plate close to the top cover;

[0028] A plurality of assembly holes are provided on the side wall of the top cover, and one end of the movable rod away from the button plate passes through the assembly hole and is placed in the top cover;

[0029] The elastic member is arranged on the movable rod between the button plate and the top cover, the limiting member is fixed on the movable rod in the top cover, and the elastic member, the limiting member, the movable rod and the assembly hole are all arranged in a one-to-one correspondence;

[0030] The second tooth portions are symmetrically arranged on the side walls of both sides of the bottom cover, the first tooth portion is used to mesh with the second tooth portion, and the number of teeth on the first tooth portion is less than the number of teeth on the second tooth portion.

[0031] Wherein, the elastic member is a conical spring, the conical spring and the movable rod are sleeved together, the limiting member is an E-shaped retaining spring, the E-shaped retaining spring and the movable rod are clamped together; and / or, the top cover and the bottom cover are slidably connected.

[0032] A suturing device system is also provided in an embodiment of the present application, including a needle removal device and a suture device, wherein the needle removal device is the above-mentioned needle removal device; the needle removal device is used to push out or retract the puncture needle, and the suture device is used to push out or retract the suture.

[0033] According to the needle removal device in the above embodiment, multiple puncture needles are fixed to the guide member, the guide member is fixed to the top cover, and the top cover and the bottom cover are movably connected. By moving the top cover relative to the bottom cover, the multiple puncture needles on the guide member can be synchronously driven to move, thereby realizing synchronous needle removal, that is, multiple needle punctures can be completed simultaneously by removing the needle once. For the patent foramen ovale suture surgery, the foramen ovale closure surgery can be completed only by removing the needle once, thereby improving the use efficiency of the needle removal device, thereby shortening the operation time and improving the success rate of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the explosion structure of the needle ejection device in the embodiment of the present application;

[0035] Figure 2 Schematic diagram of the cross-sectional structure of the needle removal device in the embodiment of the present application;

[0036] Figure 3 This is a schematic diagram of the top cover structure in an embodiment of the present application;

[0037] Figure 4 This is a schematic diagram of the guide structure in an embodiment of the present application;

[0038] Figure 5 This is a schematic diagram of the structure of the first pusher in the embodiment of the present application;

[0039] Figure 6This is a schematic diagram of the structure of the second pusher in the embodiment of the present application;

[0040] Figure 7 This is a schematic diagram of the structure of the guide member application scenario in the embodiment of the present application;

[0041] Figure 8 This is a schematic diagram of the structure of the guide member application scenario in the embodiment of the present application;

[0042] Fig. 9 This is a schematic diagram of the button assembly structure in an embodiment of the present application;

[0043] Description of reference numerals: 10. handle, 11. top cover, 111. locking hole, 112. slide groove, 113. annular track, 114. loading port, 115. adjustment hole, 116. fixing groove, 117. assembly hole, 12. bottom cover, 121. guide plate, 122. second tooth portion, 20. guide member, 21. first plate body, 22. second plate body, 23. third plate body, 24. cone body, 241. puncture position, 25. connecting plate, 251. convex plate, 26. guide groove, 27. needle threading groove, 271. first needle threading groove, 272. second needle threading groove, 28. locking groove, 29. main body channel, 30. puncture needle, 40. pusher, 41. first pusher, 42. second pusher, 43. main block, 431. head end, 432. tail end, 44. additional block, 441. through hole, 50. locking member, 51. locking rod, 52. slider pressure plate, 53. limit block, 54. knob, 541. sleeve, 542. raised portion, 60. locking strip, 70. first push shaft, 80. second push shaft, 90. push rod, 100. push button, 110. button assembly, 1101. button plate, 1102. elastic member, 1103. limit member, 1104. first tooth portion, 1105. movable rod. DETAILED DESCRIPTION

[0044] The present application is further described in detail below through specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are labeled with related similar element numbers.

[0045] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0046] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0047] like Figure 1-Figure 9 As shown, an embodiment of the present invention provides a needle removal device, including: a handle 10 , a guide member 20 and a puncture needle 30 .

[0048] The handle 10 includes a top cover 11 and a bottom cover 12 which are movably connected, and the top cover 11 and the bottom cover 12 enclose an assembly cavity in the handle 10. The guide member 20 is located in the assembly cavity, and the guide member 20 and the top cover 11 are fixedly connected. There are at least two puncture needles 30, and the puncture needles 30 are fixed to the guide member 20. The top cover 11 is used to move relative to the bottom cover 12 to drive the puncture needles 30 in the assembly cavity to move.

[0049] By using the needle removal device in the embodiment of the present invention, multiple puncture needles 30 are fixed to the guide member 20, and the guide member 20 is fixed to the top cover 11. The top cover 11 and the bottom cover 12 are movably connected. By moving the top cover 11 relative to the bottom cover 12, the multiple puncture needles 30 on the guide member 20 can be synchronously driven to move, thereby realizing synchronous needle removal, improving the use efficiency of the needle removal device, thereby shortening the operation time and improving the success rate of the operation.

[0050] like Figure 1-Figure 2 As shown, the needle removal device further includes a pusher 40, a locking member 50 and at least two locking strips 60, wherein the pusher 40 is fixed to the guide member 20, and the locking strips 60 are fixed to the pusher 40. The locking member 50 has a first state and a second state, wherein the locking member 50 is used to lock at least two locking strips 60 at the same time in the first state, and wherein the locking member 50 is used to release the locking of at least two locking strips 60 in the second state.

[0051] Under the action of the pusher 40, the locking member 50 and the locking strip 60, the guide member 20 is fixed to the top cover 11 in a more flexible manner. For example, when the needle needs to be removed synchronously, the locking member 50 is in the first state, the guide member 20 is indirectly fixed to the top cover 11, and the guide member 20 and the puncture needle 30 thereon can move synchronously with the top cover 11. For another example, when the needle does not need to be removed synchronously but needs to be removed individually, the locking member 50 is in the second state.

[0052] like Figure 1-Figure 2As shown, the locking member 50 includes a locking rod 51 and a slider plate 52. A locking hole 111 is provided on the top cover 11, and the slider plate 52 is located in the assembly cavity. Part of the locking rod 51 passes through the locking hole 111 and is threadedly connected to the slider plate 52, and the remaining locking rod 51 is placed outside the assembly cavity. In the first state, the slider plate 52 and at least two locking strips 60 are both in contact, and in the second state, the slider plate 52 and at least two locking strips 60 are separated, and the locking rod 51 is used to change the position of the slider plate 52 relative to the at least two locking strips 60 by rotation. Figure 2 Take the state switching principle of the locking member 50 as an example. At this time, the locking member 50 is in the first state, and the slider pressure plate 52 and the multiple locking strips 60 are abutted against each other. By rotating the locking rod 51, the slider pressure plate 52 can be moved to the side away from the locking strip 60 to switch the state of the locking member 50 to the second state. The locking member 50 can be switched from the second state to the first state by rotating the locking rod 51 in the opposite direction.

[0053] Preferably, a rough surface is provided on the contact portion between the locking strip 60 and the slider pressure plate 52, and the rough surface can increase the locking force between the locking strip 60 and the slider pressure plate 52, thereby ensuring that the locking strip 60 and the slider pressure plate 52 can be firmly locked when the locking member 50 is in the first state.

[0054] like Figure 1-Figure 3 As shown, the needle ejection device further includes a stopper 53, a slide groove 112 is provided in the top cover 11, the slider plate 52 and the slide groove 112 are slidably connected, the locking strip 60 is located between the slider plate 52 and the locking hole 111, and the stopper 53 is fixed in the slide groove 112 on the side of the slider plate 52 away from the locking strip 60. And / or, it also includes a knob 54, the knob 54 is located outside the assembly cavity, and the knob 54 is connected to the locking rod 51. An annular track 113 is provided in the locking hole 111, and a part of the structure of the knob 54 can be rotatably placed in the annular track 113.

[0055] For example Figure 3 As shown, symmetrically distributed slide grooves 112 are provided in the side walls of the top cover 11, and a limit block 53 is provided in each slide groove 112. The two ends of the slider pressure plate 52 are respectively slidably connected to the slide grooves 112. The slide grooves 112 can limit and guide the movement of the slider pressure plate 52, and the limit blocks 53 can limit the travel of the slider pressure plate 52 to prevent the slider pressure plate 52 from being separated from the locking rod 51, or to prevent the slider pressure plate 52 from being separated from the slide grooves 112 and falling off.

[0056] like Figure 1As shown, the locking rod 51 is, for example, a hexagonal bolt, and a hexagonal hole is provided on the knob 54. The head of the hexagonal bolt is fixed in the hexagonal hole, so that the locking rod 51 and the knob 54 are fixedly connected. The locking rod 51 can be rotated by rotating the knob 54. The slider pressure plate 52 is threadedly connected through an internal thread and an external thread of the hexagonal bolt. A sleeve 541 is provided on the side of the knob 54 facing the top cover 11, and a protrusion 542 is provided on the outer wall of the sleeve 541, for example, two protrusions 542 are arranged opposite to each other. The locking hole 111 of the top cover 11 is provided with a loading port 114 at a location corresponding to the annular track 113, for example, two loading ports 114 are provided, and the protrusion 542 on the sleeve 541 enters the annular track 113 through the loading port 114, and the knob 54 is rotatably fixed on the top cover 11. When the knob 54 is rotated, the protrusion 542 rotates in the annular track 113. When the knob 54 needs to be removed, the protrusion 542 is aligned with the loading port 114, and the knob 54 can be removed from the top cover 11. Preferably, the protrusion 542 on the sleeve 541 is provided with a cutout to increase the elasticity of the protrusion 542, so that the protrusion 542 can enter the loading port 114.

[0057] like Figure 4-Figure 8 As shown, the guide member 20 includes a first plate body 21 , a second plate body 22 , a third plate body 23 and a cone body 24 . The cone body 24 is fixed to a side of the first plate body 21 away from the second plate body 22 .

[0058] The pusher 40 includes a first pusher 41 and a second pusher 42 . The first pusher 41 and the second pusher 42 are both configured in two. The locking strips 60 are fixed on the first pusher 41 and the second pusher 42 . At this time, the number of the locking strips 60 is configured as four.

[0059] At least one first pushing shaft 70 is disposed on the first pushing body 41 . The first pushing body 41 can be movably sleeved on the first pushing shaft 70 . Two ends of the first pushing shaft 70 are respectively fixed to the first plate body 21 and the second plate body 22 .

[0060] At least one second push shaft 80 is disposed on the second push body 42 . The second push body 42 can be movably sleeved on the second push shaft 80 . Two ends of the second push shaft 80 are respectively fixed to the second plate body 22 and the third plate body 23 .

[0061] The first pusher 41 and the second pusher 42 are both fixed with a puncture needle 30 on the same side close to the cone 24. At this time, there are four puncture needles 30, and one end of the puncture needle 30 away from the third plate 23 penetrates the cone 24. The cone 24 is used to guide the puncture needle 30 into the main tube. Figure 4As shown, four puncture sites 241 distributed around the axis of the cone 24 are provided on the circumference of the cone 24 . The puncture sites 241 may be groove-shaped or hole-shaped, and there is no specific limitation as long as the puncture sites 241 can guide the puncture needle 30 .

[0062] A plurality of adjustment holes 115 are provided on the top cover 11, and push rods 90 are fixed on the first pusher 41 and the second pusher 42 facing the top cover 11. The number of the adjustment holes 115 and the number of the push rods 90 are arranged in a one-to-one correspondence. One end of the push rod 90 away from the bottom cover 12 passes through the adjustment hole 115 and is placed outside the assembly cavity. The push rod 90 located outside the assembly cavity is used to move the puncture needle 30.

[0063] The locking strip 60 is a stainless steel strip, and the locking strip 60 can be fixed to the pusher 40 by screws or welding. The push rod 90 can also be fixed to the pusher 40 by screws or welding.

[0064] Taking the first pusher 41 as an example, when the puncture needle 30 and the locking strip 60 are fixed on the first pusher 41 at the same time, at this time, the locking member 50 and the locking strip 60 cooperate to switch the needle removal mode. For example, when the locking member 50 is in the first state, the puncture needle 30 on the first pusher 41 is in a fixed state relative to the guide member 20 and cannot be moved independently, but at this time, multiple puncture needles 30 can move synchronously with the guide member 20. For another example, when the locking member 50 is in the second state, the puncture needle 30 on the first pusher 41 is in a movable state relative to the guide member 20, and the puncture needle 30 can be moved independently according to demand. The use principle of the puncture needle 30 on the second pusher 42 is the same as that of the puncture needle 30 on the first pusher 41, so it will not be repeated here.

[0065] In order to ensure the suturing effect, the existing oval foramen suture device needs to bend the main tube placed at the oval foramen of the human body to ensure better suturing effect, so that the puncture needle 30 can better puncture the tissue around the oval foramen. After the main tube is bent, multiple puncture needles 30 will produce different puncture effects after being synchronously ejected. For example, some puncture needles 30 have already passed through the tissue around the oval foramen, but some puncture needles 30 have not yet passed through the tissue around the oval foramen. At this time, it is necessary to adjust the position of a single needle to ensure the puncture and suturing effect.

[0066] Correspondingly, in the needle removal device in the embodiment of the present invention, two first pushers 41 are arranged between the first plate body 21 and the second plate body 22, and the two first pushers 41 are both movably sleeved with the first pusher shaft 70. Two second pushers 42 are arranged between the second plate body 22 and the third plate body 23, and the two second pushers 42 are both movably sleeved with the second pusher shaft 80. A push rod 90 and a puncture needle 30 are fixed on each first pusher 41, and a push rod 90 and a puncture needle 30 are also fixed on each second pusher 42. The pusher 90 and the puncture needle 30 are arranged one by one. In this way, when the needle needs to be removed, the pusher 90 corresponding to the puncture needle 30 can be used to drive the puncture needle 30 to move, that is, the purpose of removing the needle separately is achieved, so that when the needle removal device of the present invention is used, multiple needles can be controlled according to actual needs to achieve almost the same needle removal effect. The needle removal distance of each needle is limited by the space between the first plate 21 and the second plate 22 or the space between the second plate 22 and the third plate 23 to prevent the puncture needle 30 from over-puncturing and ensure the safety of the needle removal device. The four needles are integrated and guided by the guide 20, so that the designed needle removal device has a compact structure, saves volume, and is easy for users to operate. At the same time, when the simultaneous needle removal during the operation cannot meet the surgical needs, a single needle can be used for needle removal puncture to complete the oval foramen closure surgery, which expands the scope of use of the needle removal device and improves the success rate of the operation.

[0067] like Figure 4 As shown, puncture grooves corresponding to the positions are provided on the first plate 21, the second plate 22 and the third plate 23, so that the puncture needle 30 can pass through the puncture position 241 of the cone 24. For example, two first needle-threading grooves 271 are provided on the side of the first plate 21, the second plate 22 and the third plate 23 close to the top cover 11, and the two first needle-threading grooves 271 are symmetrically distributed on both sides of the axis of the cone 24. Two second needle-threading grooves 272 are provided on the side of the first plate 21, the second plate 22 and the third plate 23 away from the top cover 11, and the two second needle-threading grooves 272 are symmetrically distributed on both sides of the axis of the cone 24. Two locking grooves 28 corresponding to the positions are provided on the side of the second plate 22 and the third plate 23 close to the top cover 11, and the two locking grooves 28 are symmetrically distributed about the axis of the cone 24, and the locking grooves 28 are used to receive part of the locking strip 60. The guide member 20 is provided with a main body channel 29 that passes through the first plate body 21, the second plate body 22, the third plate body 23 and the cone body 24, and the axis of the main body channel 29 coincides with the axis of the cone body 24. For example, the main body channel 29 is for the main body tube to pass through. In other embodiments, the puncture groove may also be a puncture hole, as long as the puncture needle 30 can pass through and enter the cone body 24. The locking groove 28 may also be a hole, as long as the locking strip 60 can pass through or can accommodate the locking strip 60.

[0068] Specifically, in the embodiment of the present invention, the two first pushers 41 and the two second pushers 42 are symmetrically distributed on both sides of the axis of the cone 24. The first pusher 41 and the second pusher 42 each include a main block 43 and an additional block 44. The main block 43 has a head end 431 and a tail end 432. The head end 431 is located on the side close to the top cover 11, and the tail end 432 is located on the side close to the bottom cover 12. The additional block 44 on the first pusher 41 is fixed to the side wall of the main block 43 on the side close to the head end 431. The additional blocks 44 on the two first pushers 41 are located on the side walls of the two first pushers 41 on the side close to each other. Figure 5 As shown, the first pusher 41 is roughly in the shape of a 7. The additional block 44 on the second pusher 42 is fixed to the side wall of the main block 43 near the tail end 432, and the additional blocks 44 on the two second pushers 42 are located on the side walls of the two second pushers 42 near each other, as shown in FIG. Figure 6 As shown, the second pusher 42 is roughly L-shaped. A through hole 441 is formed on the additional block 44, and one end of the puncture needle 30 is fixed in the through hole 441, for example, one end of the puncture needle 30 is fixed in the through hole 441 by welding.

[0069] like Figure 5-Figure 8 As shown, two bearing holes are provided on the main body block 43, and a linear bearing is fixed in each bearing hole. At this time, two first push shafts 70 can be movably sleeved on the first pusher 41, and two second push shafts 80 can be movably sleeved on the second pusher 42. The linear bearing on the first pusher 41 facilitates the first pusher 41 to move or slide relative to the first push shaft 70, and the linear bearing on the second pusher 42 facilitates the second pusher 42 to move or slide relative to the second push shaft 80. The first push shaft 70 and the second push shaft 80 can be two independent structures or an integrated structure. For example, when the first push shaft 70 and the second push shaft 80 are an integrated structure, they pass through and are fixed to the first plate body 21, the second plate body 22 and the third plate body 23 in sequence.

[0070] Among them, one end of the locking strip 60 on the first pusher 41 is fixed to the end surface of the additional block 44 close to the top cover 11. One end of the locking strip 60 on the second pusher 42 is fixed to the end surface of the main block 43 close to the top cover 11. One end surface of the main block 43 and the additional block 44 in the first pusher 41 close to the top cover 11, and one end surface of the main block 43 in the second pusher 42 close to the top cover 11 are all on the same plane. Multiple locking strips 60 are arranged side by side in the assembly cavity, and the locking member 50 is located on the side away from the cone 24, and the locking member 50 and the guide member 20 are arranged at intervals. The locking member 50 and the guide member 20 are arranged at intervals, leaving enough space for the guide member 20 to move, so as to avoid the locking member 50 interfering with the movement of the guide member 20. Multiple (for example, four) locking strips 60 are arranged side by side in the assembly cavity, so that one slider pressure plate 52 can press multiple locking strips 60 at the same time, which can simplify the structure and simplify the locking or unlocking operation.

[0071] like Figure 4 as well as Figure 7-Figure 8 As shown, the guide member 20 further includes a connecting plate 25, the first plate body 21, the second plate body 22 and the third plate body 23 are parallel to each other, the connecting plate 25 and the first plate body 21 are perpendicular, the connecting plate 25 is arranged between the first plate body 21 and the second plate body 22 and between the second plate body 22 and the third plate body 23, the connecting plate 25 is provided with a convex plate 251 on the side facing the top cover 11, the top cover 11 is provided with a fixing groove 116, the convex plate 251 is fixed in the fixing groove 116, so that the position of the guide member 20 relative to the top cover 11 remains unchanged, and when the top cover 11 moves relative to the bottom cover 12, the guide member 20 can be driven to move synchronously. And / or, a guiding structure is arranged between the guide member 20 and the bottom cover 12. A guiding structure, for example, a guide groove 26 is provided on the side of the guide member 20 facing the bottom cover 12, and a guide plate 121 is provided on the side of the bottom cover 12 facing the guide member 20. The guide groove 26 and the guide plate 121 are matched in a concave-convex manner, and limiting structures, such as a plate body, a block body, etc., can also be provided at both ends of the guide plate 121 to limit the movement range of the guide member 20, thereby limiting the movement range of the puncture needle 30 when the needle is removed synchronously.

[0072] like Figure 1-Figure 2 As shown, the needle removal device further includes a plurality of push buttons 100, and the number of push buttons 100 is arranged in a one-to-one correspondence with the number of push rods 90. The push button 100 is fixed to the push rod 90 located outside the assembly cavity, and the push button 100 can cover the adjustment hole 115. The push button 100 facilitates the user to push the push rod 90, and the push button 100 covers the adjustment hole 115, which can also prevent dust from entering the space inside the handle 10.

[0073] like Figure 1 and Fig. 9As shown, button assemblies 110 are symmetrically arranged on the side walls of both sides of the top cover 11, and the button assembly 110 includes a button plate 1101, an elastic member 1102 and a stopper 1103. A first tooth portion 1104 is arranged on the side of the button plate 1101 away from the top cover 11, and a plurality of movable rods 1105 are arranged on the side of the button plate 1101 close to the top cover 11. A plurality of assembly holes 117 are provided on the side wall of the top cover 11, and one end of the movable rod 1105 away from the button plate 1101 passes through the assembly hole 117 and is placed in the top cover 11. The elastic member 1102 is arranged on the movable rod 1105 between the button plate 1101 and the top cover 11, and the stopper 1103 is fixed on the movable rod 1105 in the top cover 11. The elastic member 1102, the stopper 1103, the movable rod 1105 and the assembly hole 117 are all arranged one by one, for example, they are all arranged in four. The second tooth portions 122 are symmetrically arranged on the side walls of the bottom cover 12 . The first tooth portion 1104 is used to mesh with the second tooth portion 122 . The number of teeth on the first tooth portion 1104 is less than the number of teeth on the second tooth portion 122 .

[0074] The plurality of movable rods 1105 can ensure the stability of the button plate 1101 when pressed, and prevent the button plate 1101 from tilting. The plurality of movable rods 1105 and the plurality of elastic members 1102 can also assist the first tooth portion 1104 in meshing with the second tooth portion 122. The meshing state of the first tooth portion 1104 and the second tooth portion 122 can be switched through the button assembly 110. For example, when the needle needs to be removed synchronously, the button plate 1101 is pressed, the first tooth portion 1104 and the second tooth portion 122 are separated, and the top cover 11 can be moved. When the needle does not need to be removed simultaneously, the button plate 1101 is released, and under the action of the elastic member 1102, the first tooth portion 1104 and the second tooth portion 122 are meshed, and the position of the top cover 11 relative to the bottom cover 12 can be locked, that is, the position of the puncture needle 30 on the locking guide 20 is locked, so that the designed needle removal device can be instantly locked within the travel range.

[0075] like Figure 1 As shown, when the needle removal device is used, when the user pinches the button plates 1101 on both sides of the handle 10, the first tooth portion 1104 on the button plate 1101 and the second tooth portion 122 on the bottom cover 12 are disengaged, and the top cover 11 can be operated to drive the guide member 20 and the parts fixed on the guide member 20 to move forward and backward. This design is to set the button assembly 110 at the position where the thumb and index finger will normally be placed when the doctor pushes the top cover 11, and cleverly use the strength of the doctor's fingers when holding the top cover 11 to achieve unlocking. After the doctor's hand is separated from the top cover 11, the button plate 1101 and the bottom cover 12 can automatically engage and lock the position of the puncture needle 30, eliminating the steps of unlocking and locking, and saving a certain amount of operation time.

[0076] The number of teeth on the first tooth portion 1104 is smaller than the number of teeth on the second tooth portion 122. For example, N serrations are arranged on the first tooth portion 1104, and M serrations are arranged on the side wall of the bottom cover 12, where M>N. This facilitates the engagement of the serrated structure on the outer side of the button plate 1101 with the serrated structure on the inner wall of the bottom cover 12, and the first tooth portion 1104 of the button plate 1101 and the second tooth portion 122 of the bottom cover 12 can be separated by pressing two buttons at the same time, so that the top cover 11 can move forward and backward along the bottom cover 12, thereby achieving the effect of pushing the pins at the same time.

[0077] More preferably, the elastic member 1102 is a conical spring, the conical spring and the movable rod 1105 are sleeved together, and the limiting member 1103 is an E-shaped retaining spring, the E-shaped retaining spring and the movable rod 1105 are clamped together. And / or, the top cover 11 and the bottom cover 12 are slidably connected.

[0078] The conical spring can have a large compression range when pressing the button plate 1101, which is convenient for reducing the space between the side wall of the top cover 11 and the button plate 1101, and is conducive to the miniaturization and compact design of the needle removal device. The E-shaped retaining spring is provided to fix the movable rod 1105 to prevent the movable rod 1105 from separating from the top cover 11. In other embodiments, the stopper 1103 can also be a structure such as a latch.

[0079] The top cover 11 and the bottom cover 12 are slidably connected. For example, a slide rail is provided on the side of the bottom cover 12 facing the top cover 11, and a slide rod is provided on the side of the top cover 11 facing the bottom cover 12. The slide rod and the slide rail cooperate to realize the sliding connection between the top cover 11 and the bottom cover 12.

[0080] like Figure 1 and Figure 7 As shown, in the initial state of the needle removal device, the four locking strips 60 on the guide member 20 are in a locked state, and the top cover 11 cannot move relative to the bottom cover 12. The application of the needle removal device to foramen ovale closure surgery is taken as an example to illustrate the use principle of the needle removal device designed by the present invention. It should be noted that the needle removal device and suture system in the present invention, in addition to being used in structural heart disease surgery, such as atrial septal defect suture surgery, ventricular septal defect suture surgery, and mitral valve suture surgery, can also be used in other fields that require suturing, such as arteriovenous suture surgery.

[0081] The principle of use of the needle removal device is as follows: the doctor pinches the button plates 1101 on both sides of the top cover 11 with his hands to release the meshing state of the first tooth portion 1104 and the second tooth portion 122, and pushes the top cover 11 to drive the guide member 20 and the puncture needle 30 and the locking strip 60 on the guide member 20 to move synchronously, thereby realizing synchronous needle removal. After the synchronous needle removal is completed, the button plate 1101 is released, so that the first tooth portion 1104 and the second tooth portion 122 can be restored to the meshing state, and the top cover 11 cannot move relative to the bottom cover 12. At this time, the penetration of the puncture needle 30 in the human body is observed in combination with the developing device, and the puncture needle 30 that has not punctured in place (i.e., the puncture needle 30 that has not penetrated or has not passed through the tissue around the oval foramen) is moved out separately, so that all the puncture needles 30 can be punctured to the appropriate position. When the puncture needle 30 is moved separately, the locking state of the locking strip 60 by the locking member 50 can be released. When moving a certain puncture needle 30 alone, you can try to find the puncture needle 30 that is not in the right position by pushing the push button 100 backward. For example, push a certain push button 100, and find that the puncture needle 30 that is pulled back is the puncture needle 30 that is not in the right position in the developing device. Then, you can operate the push button 100 to adjust the position of the puncture needle 30. If the puncture needle 30 that is pulled back does not correspond to the puncture needle 30 that is not in the right position in the developing device, continue to try until you find the push button 100 that corresponds to the puncture needle 30 that is not in the right position. Push the push button 100 forward to make the puncture needle 30 that is not in the right position continue to move forward to the right position. After the needle is removed alone, the locking member 50 is used to restore the locking state of the locking strip 60.

[0082] In an embodiment of the present invention, a suture system is further provided, comprising a needle ejection device and a suture device, wherein the needle ejection device is the needle ejection device in the above embodiment. The needle ejection device is used to push out or retract the puncture needle 30, and the suture device is used to push out or retract the suture. The suture system adopts the needle ejection device in the above embodiment, and therefore also has the advantages of the needle ejection device in the above embodiment, so it will not be described here.

[0083] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A needle removal device, characterized in that: include: A handle, comprising a top cover and a bottom cover that are movably connected, wherein the top cover and the bottom cover enclose an assembly cavity in the handle; A guide member, located in the assembly cavity, wherein the guide member is fixedly connected to the top cover; as well as a puncture needle, configured as at least two, wherein the puncture needle is fixed to the guide member; The top cover is used to move relative to the bottom cover to drive the puncture needle in the assembly cavity to move; It also includes a pushing body, a locking member and at least two locking strips, wherein the pushing body is fixed to the guide member, and the locking strip is fixed to the pushing body; the locking member has a first state and a second state, in the first state, the locking member is used to simultaneously lock at least two of the locking strips for synchronous needle removal, and in the second state, the locking member is used to release the locking of at least two of the locking strips for single needle removal; The locking member includes a locking rod and a slider pressure plate; a locking hole is provided on the top cover, the slider pressure plate is located in the assembly cavity, part of the locking rods pass through the locking hole and are threadedly connected to the slider pressure plate, and the rest of the locking rods are placed outside the assembly cavity; in the first state, the slider pressure plate and at least two of the locking strips are abutted, and in the second state, the slider pressure plate and at least two of the locking strips are separated, and the locking rod is used to change the position of the slider pressure plate relative to the at least two locking strips by rotation.

2. The needle removal device according to claim 1, characterized in that: It also includes a limit block, a slide groove is provided in the top cover, the slider pressure plate and the slide groove are slidably connected, the locking strip is located between the slider pressure plate and the locking hole, and the limit block is fixed in the slide groove on the side of the slider pressure plate away from the locking strip; and / or, it also includes a knob, the knob is located outside the assembly cavity, the knob is connected to the locking rod; an annular track is provided in the locking hole, and a partial structure of the knob can be rotatably placed in the annular track.

3. The needle removal device according to claim 1, characterized in that: The guide member includes a first plate body, a second plate body, a third plate body and a cone body, wherein the cone body is fixed to a side of the first plate body away from the second plate body; The pushing body comprises a first pushing body and a second pushing body, the first pushing body and the second pushing body are each configured in two pieces, and the locking strip is fixed on both the first pushing body and the second pushing body; At least one first push shaft is disposed on the first push body, the first push body can be movably sleeved on the first push shaft, and two ends of the first push shaft are respectively fixed to the first plate body and the second plate body; At least one second push shaft is disposed on the second push body, the second push body can be movably sleeved on the second push shaft, and two ends of the second push shaft are respectively fixed to the second plate body and the third plate body; The puncture needle is fixed on the same side of the first pushing body and the second pushing body close to the cone, and one end of the puncture needle away from the third plate body penetrates into the cone, and the cone is used to guide the puncture needle into the main body tube; The top cover is provided with a plurality of adjustment holes, and push rods are fixed to the first pushing body and the second pushing body on the side facing the top cover, the number of the adjustment holes and the number of the push rods are arranged in a one-to-one correspondence, and one end of the push rod away from the bottom cover passes through the adjustment hole and is placed outside the assembly cavity, and the push rod located outside the assembly cavity is used to move the puncture needle.

4. The needle removal device according to claim 3, characterized in that: The two first pushers and the two second pushers are symmetrically distributed on both sides of the axis of the cone; The first pusher and the second pusher both include a main body block and an additional block, the main body block has a head end and a tail end, the head end is located near the top cover, and the tail end is located near the bottom cover; The additional block on the first pusher is fixed to the side wall of the main block close to the head end, and the additional blocks on the two first pushers are located on the side walls of the two first pushers close to each other; The additional block on the second pusher is fixed to the side wall of the main block close to the tail end, and the additional blocks on the two second pushers are located on the side walls of the two second pushers close to each other; The additional block is provided with a through hole, and one end of the puncture needle is fixed in the through hole.

5. The needle removal device according to claim 4, characterized in that: One end of the locking strip on the first pusher is fixed to the end surface of the additional block close to the top cover; one end of the locking strip on the second pusher is fixed to the end surface of the main block close to the top cover; a plurality of the locking strips are arranged side by side in the assembly cavity, the locking piece is located on the side away from the conical body, and the locking piece and the guide piece are spaced apart.

6. The needle removal device according to claim 3, characterized in that: The guide member also includes a connecting plate, the first plate body, the second plate body and the third plate body are parallel to each other, the connecting plate and the first plate body are perpendicular, the connecting plate is arranged between the first plate body and the second plate body and between the second plate body and the third plate body, the connecting plate is provided with a convex plate on the side facing the top cover, a fixing groove is provided in the top cover, and the convex plate is fixed in the fixing groove; and / or a guiding structure is arranged between the guide member and the bottom cover.

7. The needle removal device according to claim 3, characterized in that: It also includes a plurality of push buttons, the number of which is arranged in one-to-one correspondence with the number of the push rods; the push buttons are fixed to the push rods located outside the assembly cavity, and the push buttons can cover the adjustment holes.

8. The needle removal device according to any one of claims 1 to 7, characterized in that: The button assembly is symmetrically arranged on the side walls of both sides of the top cover, and the button assembly includes a button plate, an elastic member and a limit member. The button plate is provided with a first tooth portion on a side away from the top cover, and a plurality of movable rods are provided on a side of the button plate close to the top cover; A plurality of assembly holes are provided on the side wall of the top cover, and one end of the movable rod away from the button plate passes through the assembly hole and is placed in the top cover; The elastic member is arranged on the movable rod between the button plate and the top cover, the limiting member is fixed on the movable rod in the top cover, and the elastic member, the limiting member, the movable rod and the assembly hole are all arranged in a one-to-one correspondence; The second tooth portions are symmetrically arranged on the side walls of both sides of the bottom cover, the first tooth portion is used to mesh with the second tooth portion, and the number of teeth on the first tooth portion is less than the number of teeth on the second tooth portion.

9. The needle removal device according to claim 8, characterized in that: The elastic member is a conical spring, the conical spring and the movable rod are sleeved together, the limiting member is an E-shaped retaining spring, the E-shaped retaining spring and the movable rod are clamped together; and / or the top cover and the bottom cover are slidably connected.

10. A stapler system, characterized in that: It comprises a needle removal device and a suture device, wherein the needle removal device is the needle removal device as described in any one of claims 1 to 9; the needle removal device is used to push out or retract the puncture needle, and the suture device is used to push out or retract the suture.

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