技术领域Technical Field
本发明属于医疗设备领域，具体涉及神经介入微导管及其使用方法。The present invention belongs to the field of medical equipment, and in particular relates to a neurointervention microcatheter and a method of using the same.
背景技术Background technique
神经介入中的颅内动脉瘤栓塞术需要使用微导管在颅内血管内到达动脉瘤的位置对瘤体进行栓塞，现有的神经介入微导管在使用时，摘除栓塞时所消耗的时间较长，导致工作效率低下，同时在摘除栓塞时，操作较为复杂且操作不便利，鉴于此，本发明提出神经介入微导管及其使用方法。Intracranial aneurysm embolization in neurointervention requires the use of a microcatheter to reach the location of the aneurysm in the intracranial blood vessels to embolize the tumor. When using existing neurointervention microcatheters, it takes a long time to remove the embolism, resulting in low work efficiency. At the same time, the operation is relatively complicated and inconvenient when removing the embolism. In view of this, the present invention proposes a neurointervention microcatheter and a method of using the same.
发明内容Summary of the invention
本发明的目的在于提供神经介入微导管及其使用方法，以解决上述背景技术中提出的问题。The object of the present invention is to provide a neurointervention microcatheter and a method of using the same to solve the problems raised in the above background technology.
为实现上述目的，本发明提供如下技术方案：神经介入微导管，包括有微导管中端和微导管前端，微导管前端内部的轴心处设置可沿其轴向往复移动的连接杆，连接杆的圆周面上固定套接有固定环，连接杆靠近微导管前端管口的一端连接有用于包裹栓塞的弹性片，连接杆的外侧沿其轴向限位滑动套接有滑动环，滑动环设置于弹性片和固定环之间且邻近固定环的位置处，滑动环的外侧对称的铰接有两个连杆，两个连杆的末端分别铰接于弹性片的背面，滑动环的外侧还固定连接有两个弹性杆，弹性杆沿连接杆的轴向向固定环方向延伸并形成有与固定环弹性卡接的挡块，微导管前端的内壁上沿水平方向连接有与挡块滑动配合的连接板，连接板靠近挡块的一侧依次形成有直面和第三斜面，连接杆带动弹性片移动至微导管前端外部的过程中，挡块经过第三斜面时产生形变并脱离固定环，以使处于拉直状态的弹性片恢复成弧形对栓塞形成包裹。To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a neurointervention microcatheter comprises a microcatheter middle end and a microcatheter front end, a connecting rod which can reciprocate along its axial direction is arranged at the axis center inside the front end of the microcatheter, a fixing ring is fixedly sleeved on the circumferential surface of the connecting rod, an elastic sheet for wrapping the embolism is connected to one end of the connecting rod close to the front end tube mouth of the microcatheter, a sliding ring is sleeved on the outer side of the connecting rod along its axial limiting sliding, the sliding ring is arranged between the elastic sheet and the fixing ring and at a position adjacent to the fixing ring, two connecting rods are symmetrically hinged on the outer side of the sliding ring, and the two connecting rods are fixedly sleeved on the circumferential surface of the connecting rod ... The ends are respectively hinged to the back side of the elastic sheet, and two elastic rods are fixedly connected to the outside of the sliding ring. The elastic rods extend along the axial direction of the connecting rod toward the fixed ring and form a stopper elastically engaged with the fixed ring. A connecting plate slidingly engaged with the stopper is connected to the inner wall of the front end of the microcatheter in a horizontal direction, and a straight surface and a third inclined surface are formed in sequence on one side of the connecting plate close to the stopper. When the connecting rod drives the elastic sheet to move to the outside of the front end of the microcatheter, the stopper is deformed and detached from the fixed ring when passing through the third inclined surface, so that the elastic sheet in the straightened state is restored to an arc shape to wrap the embolism.
优选的，微导管前端的内部转动安装有挡板，挡板的中部形成有可与弹性片截面相适配的通槽，弹性片可穿过该通槽延伸至微导管前端的外部，并且弹性片的截面为长宽不同的矩形，弹性片朝向挡板一侧的四角处均固定连接有固定块。Preferably, a baffle is rotatably installed inside the front end of the microcatheter, and a through groove that can be adapted to the cross-section of the elastic sheet is formed in the middle of the baffle. The elastic sheet can extend to the outside of the front end of the microcatheter through the through groove, and the cross-section of the elastic sheet is a rectangle with different lengths and widths. The four corners of the elastic sheet facing the baffle are fixedly connected to fixed blocks.
优选的，挡板的外侧固定连接有T形滑块，微导管前端的内壁上开设有T形滑槽，挡板通过T形滑块嵌入至T形滑槽与微导管前端转动连接；微导管前端的外壁上开设有与T形滑槽相连通的弧形滑槽，弧形滑槽所对应的圆心角为90°，弧形滑槽的内部滑动连接有连接件，连接件与T形滑块固定相连。Preferably, a T-shaped slider is fixedly connected to the outer side of the baffle, a T-shaped slot is provided on the inner wall of the front end of the microcatheter, and the baffle is embedded in the T-shaped slot and rotatably connected to the front end of the microcatheter through the T-shaped slider; an arc-shaped slot connected to the T-shaped slot is provided on the outer wall of the front end of the microcatheter, the central angle corresponding to the arc-shaped slot is 90°, and a connecting piece is slidably connected inside the arc-shaped slot, and the connecting piece is fixedly connected to the T-shaped slider.
优选的，弹性片与连接杆相背的侧面上矩形分布有多个第二钩刺，并且弹性片该侧的侧面中心处安装有摄像头。Preferably, a plurality of second hooks are distributed in a rectangular shape on the side of the elastic sheet opposite to the connecting rod, and a camera is installed at the center of the side of the elastic sheet.
优选的，微导管前端的内壁上且位于挡板的外侧环形分布有多个第一钩刺。Preferably, a plurality of first hooks are distributed in an annular manner on the inner wall of the front end of the micro-catheter and located outside the baffle.
优选的，连接杆的外侧沿其轴向开设有两个限位滑槽，滑动环的内侧固定连接有与限位滑槽相适配的限位块，滑动环与限位滑槽滑动连接。Preferably, two limiting sliding grooves are provided on the outer side of the connecting rod along its axial direction, a limiting block adapted to the limiting sliding groove is fixedly connected to the inner side of the sliding ring, and the sliding ring is slidably connected to the limiting sliding groove.
优选的，微导管前端的内部固定连接有活塞筒，连接杆背离弹性片的一端延伸至活塞筒内并固定连接有活塞板，活塞板与活塞筒滑动连接，活塞筒的端部安装有驱动活塞板滑动的气泵。Preferably, the front end of the microcatheter is fixedly connected to a piston cylinder, the end of the connecting rod away from the elastic sheet extends into the piston cylinder and is fixedly connected to a piston plate, the piston plate is slidably connected to the piston cylinder, and an air pump is installed at the end of the piston cylinder to drive the piston plate to slide.
本发明还提出一种如上述提及的神经介入微导管的使用方法，方法如下：The present invention also provides a method for using the above-mentioned neurointervention microcatheter, the method is as follows:
步骤一、对微导管前端进行消毒处理后，使其进入动脉，待微导管前端到达栓塞附近时，停止移动微导管；Step 1: After disinfecting the front end of the microcatheter, insert it into the artery, and stop moving the microcatheter when the front end of the microcatheter reaches the vicinity of the embolism;
步骤二、驱动连接杆在微导管前端内部向其管口处移动，连接杆带动弹性片、挡块、固定环同步移动，并且处于拉直状态的弹性片穿过通槽逐渐接近栓塞，当挡块经过第三斜面时，挡块向滑动环的中心处靠拢使弹性杆产生形变，当挡块从固定环上脱离后，在弹性片具有恢复成弧形的弹性势能下通过连杆拉动滑动环沿连接杆外侧滑动，弹性片恢复成弧形对栓塞进行包裹；Step 2: Drive the connecting rod to move inside the front end of the microcatheter toward the tube orifice thereof, the connecting rod drives the elastic sheet, the stopper, and the fixed ring to move synchronously, and the elastic sheet in a straightened state passes through the through slot and gradually approaches the embolism, when the stopper passes through the third inclined surface, the stopper moves toward the center of the sliding ring to deform the elastic rod, when the stopper is detached from the fixed ring, the sliding ring is pulled along the outer side of the connecting rod by the connecting rod under the elastic potential energy of the elastic sheet to restore to an arc shape, and the elastic sheet restores to an arc shape to wrap the embolism;
步骤三、驱动连接杆在微导管前端内部沿反方向移动至初始位置，栓塞处于微导管前端的内壁中，此时将微导管前端从动脉中拔出；Step 3: driving the connecting rod to move in the reverse direction inside the front end of the microcatheter to the initial position, so that the embolism is located in the inner wall of the front end of the microcatheter. At this time, the front end of the microcatheter is pulled out of the artery;
步骤四、再次驱动连接杆在微导管前端内部向其管口处移动，将栓塞从微导管前端中推出，随后医务人员将栓塞从弹性片上清除。Step 4: drive the connecting rod again to move inside the front end of the microcatheter toward the tube opening, push the embolism out of the front end of the microcatheter, and then the medical staff removes the embolism from the elastic sheet.
与现有技术相比，本发明提供了神经介入微导管及其使用方法，具备以下有益效果：Compared with the prior art, the present invention provides a neurointerventional microcatheter and a method of using the same, which has the following beneficial effects:
本发明通过气泵驱动活塞板会向微导管前端管口方向移动，挡块经过第三斜面时向连接杆的中心靠拢。在弹性片接触栓塞后，在弹性片具有恢复成弧形的弹性势能下，弹性片的两端拉动连杆微导管前端管口方向移动，连杆通过滑动环拉动弹性杆和挡块移动，挡块在拉力的作用下通过第一斜面脱离固定环，滑动环在该拉力的作用下向微导管前端管口方向移动，弹性片恢复成弧形状态对栓塞形成包裹，同时第二钩刺也会进入栓塞的内部，完成对栓塞的固定，之后将微导管取出即可将栓塞取出，进而完成对栓塞的摘除，操作简单且便利。The present invention drives the piston plate to move toward the front end of the microcatheter through an air pump, and the block moves toward the center of the connecting rod when passing through the third inclined plane. After the elastic sheet contacts the embolism, the two ends of the elastic sheet pull the connecting rod to move toward the front end of the microcatheter under the elastic potential energy of the elastic sheet to restore the arc shape. The connecting rod pulls the elastic rod and the block to move through the sliding ring. The block is separated from the fixing ring through the first inclined plane under the action of the pulling force. The sliding ring moves toward the front end of the microcatheter under the action of the pulling force. The elastic sheet restores to an arc state to wrap the embolism. At the same time, the second hook barb will also enter the interior of the embolism to complete the fixation of the embolism. After that, the microcatheter can be taken out to remove the embolism, thereby completing the removal of the embolism. The operation is simple and convenient.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明的实施例一起用于解释本发明，并不构成对本发明的限制，在附图中：The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
图1为实施例中微导管的结构示意图；FIG1 is a schematic diagram of the structure of a microcatheter in an embodiment;
图2为实施例中微导管前端的三维结构示意图FIG. 2 is a schematic diagram of the three-dimensional structure of the front end of the microcatheter in the embodiment
图3为实施例中微导管前端第一角度的三维结构示意图；FIG3 is a schematic diagram of the three-dimensional structure of the front end of the microcatheter at a first angle in an embodiment;
图4为实施例中微导管前端第二角度的三维剖面示意图；FIG4 is a schematic three-dimensional cross-sectional view of a second angle of the front end of the microcatheter in the embodiment;
图5为实施例中挡板的三维结构示意图；FIG5 is a schematic diagram of the three-dimensional structure of the baffle in the embodiment;
图6为实施例中弹性片的三维示意图；FIG6 is a three-dimensional schematic diagram of an elastic sheet in an embodiment;
图7为实施例中滑动环的三维示意图；FIG7 is a three-dimensional schematic diagram of a sliding ring in an embodiment;
图8为实施例中弹性杆的俯视剖面示意图；FIG8 is a schematic top cross-sectional view of an elastic rod in an embodiment;
图9为实施例中连接板的三维示意图。FIG. 9 is a three-dimensional schematic diagram of a connecting plate in an embodiment.
图中：1、微导管中端；2、微导管前端；3、第一钩刺；4、弹性片；5、第二钩刺；6、固定块；7、摄像头；8、连接杆；9、滑动环；10、限位滑槽；11、连杆；12、弹性杆；13、挡块；14、第一斜面；15、第二斜面；16、固定环；17、连接板；171、直面；172、第三斜面；18、活塞板；19、活塞筒；20、气泵；21、挡板；22、通槽；23、T形滑块；24、连接件；25、滑槽。In the figure: 1, middle end of microcatheter; 2, front end of microcatheter; 3, first hook barb; 4, elastic sheet; 5, second hook barb; 6, fixed block; 7, camera; 8, connecting rod; 9, sliding ring; 10, limiting slide groove; 11, connecting rod; 12, elastic rod; 13, stopper; 14, first inclined surface; 15, second inclined surface; 16, fixing ring; 17, connecting plate; 171, straight surface; 172, third inclined surface; 18, piston plate; 19, piston cylinder; 20, air pump; 21, baffle; 22, through groove; 23, T-shaped slider; 24, connecting piece; 25, slide groove.
具体实施方式Detailed ways
下面将结合本发明的实施例中附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.
请参阅图1-图9，本实施例提出神经介入微导管，包括有微导管中端1和微导管前端2。Please refer to FIG. 1 to FIG. 9 . This embodiment provides a neurointervention microcatheter, which includes a microcatheter middle end 1 and a microcatheter front end 2 .
微导管前端2内部的轴心处设置可沿其轴向往复移动的连接杆8，连接杆8的圆周面上固定套接有固定环16，连接杆8靠近微导管前端2管口的一端连接有用于包裹栓塞的弹性片4。微导管前端2的内部固定连接有活塞筒19，连接杆8背离弹性片4的一端延伸至活塞筒19内并固定连接有活塞板18，活塞板18与活塞筒19滑动连接，活塞筒19的端部安装有气泵20，通过气泵20驱动活塞板18在活塞筒19内滑动，当气泵20向活塞筒19内吹气时，活塞板18带动连接杆8向微导管前端2管口方向移动，当气泵20吸气时，活塞板18带动连接杆8向气泵20方向移动。另外，活塞筒19背离气泵20的一端顶部安装气管，该气管的一端在微导管前端2的内部并向背离其管口的方向延伸至微导管的外部，方便活塞板18在活塞筒19内滑动，避免活塞筒19内为密封空间而影响活塞板18滑动。A connecting rod 8 that can reciprocate along the axial direction is arranged at the axis center inside the front end 2 of the microcatheter, a fixing ring 16 is fixedly sleeved on the circumferential surface of the connecting rod 8, and an elastic sheet 4 for wrapping the embolism is connected to one end of the connecting rod 8 close to the pipe opening of the front end 2 of the microcatheter. A piston cylinder 19 is fixedly connected inside the front end 2 of the microcatheter, and the end of the connecting rod 8 that is away from the elastic sheet 4 extends into the piston cylinder 19 and is fixedly connected to a piston plate 18, which is slidably connected to the piston cylinder 19. An air pump 20 is installed at the end of the piston cylinder 19, and the piston plate 18 is driven by the air pump 20 to slide in the piston cylinder 19. When the air pump 20 blows air into the piston cylinder 19, the piston plate 18 drives the connecting rod 8 to move toward the pipe opening of the front end 2 of the microcatheter, and when the air pump 20 inhales air, the piston plate 18 drives the connecting rod 8 to move toward the air pump 20. In addition, an air pipe is installed on the top of the end of the piston cylinder 19 away from the air pump 20. One end of the air pipe is inside the front end 2 of the microcatheter and extends to the outside of the microcatheter in a direction away from its pipe mouth, so as to facilitate the sliding of the piston plate 18 in the piston cylinder 19 and avoid the sealing space in the piston cylinder 19 affecting the sliding of the piston plate 18.
连接杆8的外侧沿其轴向开设有两个限位滑槽10，滑动环9的内侧固定连接有与限位滑槽10相适配的限位块，滑动环9与限位滑槽10滑动连接，滑动环9设置于弹性片4和固定环16之间且邻近固定环16的位置处，滑动环9通过限位块和限位滑槽10的配合可限制其相对于连接杆8进行转动，即保证滑动环9在连接杆8上进行直线运动。The outer side of the connecting rod 8 is provided with two limit slots 10 along its axial direction, and the inner side of the sliding ring 9 is fixedly connected with a limit block adapted to the limit slot 10. The sliding ring 9 is slidably connected with the limit slot 10. The sliding ring 9 is arranged between the elastic sheet 4 and the fixed ring 16 and adjacent to the fixed ring 16. The sliding ring 9 can limit its rotation relative to the connecting rod 8 through the cooperation of the limit block and the limit slot 10, that is, it is ensured that the sliding ring 9 performs linear motion on the connecting rod 8.
滑动环9的外侧对称的铰接有两个连杆11，两个连杆11的末端分别铰接于弹性片4的背面，当弹性片4发生形变时会拉动连杆11，连杆11进而拉动滑动环9在连接杆8上进行滑动。滑动环9的外侧还固定连接有两个弹性杆12，弹性杆12沿连接杆8的轴向向固定环16方向延伸并形成有与固定环16弹性卡接的挡块13，如图8所示，挡块13上设有第一斜面14和第二斜面15。Two connecting rods 11 are symmetrically hinged on the outside of the sliding ring 9, and the ends of the two connecting rods 11 are respectively hinged on the back of the elastic sheet 4. When the elastic sheet 4 is deformed, the connecting rod 11 is pulled, and the connecting rod 11 then pulls the sliding ring 9 to slide on the connecting rod 8. Two elastic rods 12 are also fixedly connected to the outside of the sliding ring 9. The elastic rods 12 extend along the axial direction of the connecting rod 8 toward the fixed ring 16 and are formed with a stopper 13 that is elastically engaged with the fixed ring 16. As shown in FIG8 , the stopper 13 is provided with a first inclined surface 14 and a second inclined surface 15.
微导管前端2的内壁上沿水平方向连接有与挡块13滑动配合的连接板17，连接板17靠近挡块13的一侧依次形成有直面171和第三斜面172，连接杆8带动弹性片4移动至微导管前端2外部的过程中，挡块13经过第三斜面172时，第一斜面14与第三斜面172滑动摩擦使弹性杆12产生形变，当第一斜面14滑动至第三斜面172的末端时，挡块13脱离固定环16，此时处于拉直状态的弹性片4恢复成弧形对栓塞形成包裹。A connecting plate 17 that slides with the stopper 13 is connected to the inner wall of the front end 2 of the microcatheter in the horizontal direction. A straight surface 171 and a third inclined surface 172 are formed in sequence on one side of the connecting plate 17 close to the stopper 13. When the connecting rod 8 drives the elastic sheet 4 to move to the outside of the front end 2 of the microcatheter, when the stopper 13 passes the third inclined surface 172, the sliding friction between the first inclined surface 14 and the third inclined surface 172 causes the elastic rod 12 to deform. When the first inclined surface 14 slides to the end of the third inclined surface 172, the stopper 13 is separated from the fixing ring 16. At this time, the elastic sheet 4 in the straightened state returns to an arc shape to wrap the embolism.
为了能够使弹性片4恢复至拉直状态，本实施例中在微导管前端2的内部转动安装有挡板21，挡板21的中部形成有可与弹性片4截面相适配的通槽22，当处于拉直状态的弹性片4伸出微导管前端2对栓塞进行摘除时，弹性片4可穿过该通槽22延伸至微导管前端2的外部。弹性片4的截面为长宽不同的矩形，弹性片4朝向挡板21一侧的四角处均固定连接有固定块6，当弹性片4完成栓塞的摘除后，旋转挡板21使通槽22与弹性片4处于垂直状态，此时启动气泵20进行吹气，连接杆8带动弹性片4向微导管前端2管口方向移动，此时因弹性片4两端的固定块6被挡板21所阻挡，连接杆8继续推动弹性片4的中部，这时弹性片4会由弧形状态逐渐被拉直。在这个变化的过程中，弹性片4的两端会通过连杆11推动滑动环9沿连接杆8向固定环16方向移动，滑动环9带动弹性杆12和挡块13向固定环16方向移动，待第二斜面15与固定环16接触后，在第二斜面15的作用下，挡块13向连接杆8中心处靠拢，进而使弹性杆12和挡块13顺利通过固定环16，之后在弹性杆12的弹性作用下使挡块13卡在固定环16上。In order to restore the elastic sheet 4 to the straightened state, a baffle 21 is rotatably installed inside the front end 2 of the microcatheter in this embodiment, and a through slot 22 that can be adapted to the cross section of the elastic sheet 4 is formed in the middle of the baffle 21. When the elastic sheet 4 in the straightened state extends out of the front end 2 of the microcatheter to remove the embolism, the elastic sheet 4 can pass through the through slot 22 and extend to the outside of the front end 2 of the microcatheter. The cross section of the elastic sheet 4 is a rectangle with different lengths and widths. The four corners of the elastic sheet 4 facing the baffle 21 are fixedly connected with fixing blocks 6. When the elastic sheet 4 completes the removal of the embolism, the baffle 21 is rotated so that the through slot 22 and the elastic sheet 4 are in a vertical state. At this time, the air pump 20 is started to blow air, and the connecting rod 8 drives the elastic sheet 4 to move toward the tube opening of the front end 2 of the microcatheter. At this time, because the fixing blocks 6 at both ends of the elastic sheet 4 are blocked by the baffle 21, the connecting rod 8 continues to push the middle of the elastic sheet 4, and the elastic sheet 4 is gradually straightened from the arc state. During this change process, the two ends of the elastic sheet 4 will push the sliding ring 9 to move along the connecting rod 8 toward the fixed ring 16 through the connecting rod 11, and the sliding ring 9 will drive the elastic rod 12 and the stopper 13 to move toward the fixed ring 16. After the second inclined surface 15 contacts the fixed ring 16, under the action of the second inclined surface 15, the stopper 13 moves toward the center of the connecting rod 8, so that the elastic rod 12 and the stopper 13 can pass through the fixed ring 16 smoothly, and then the stopper 13 is stuck on the fixed ring 16 under the elastic action of the elastic rod 12.
具体的，本实施例中的挡板21的外侧固定连接有T形滑块23，微导管前端2的内壁上开设有T形滑槽，挡板21通过T形滑块23嵌入至T形滑槽与微导管前端2转动连接；微导管前端2的外壁上开设有与T形滑槽相连通的弧形滑槽25，弧形滑槽25所对应的圆心角为90°，弧形滑槽25的内部滑动连接有连接件24，连接件24与T形滑块23固定相连，医务人员可通过镊子推动连接件24旋转90度，连接件24通过T形滑块23带动挡板21旋转90度，通槽22与弹性片4之间的角度即可进行切换。Specifically, a T-shaped slider 23 is fixedly connected to the outer side of the baffle 21 in this embodiment, and a T-shaped slide groove is provided on the inner wall of the front end 2 of the microcatheter. The baffle 21 is embedded in the T-shaped slide groove and is rotatably connected to the front end 2 of the microcatheter through the T-shaped slide groove 23; an arcuate slide groove 25 connected to the T-shaped slide groove is provided on the outer wall of the front end 2 of the microcatheter, and the central angle corresponding to the arcuate slide groove 25 is 90°. A connecting piece 24 is slidably connected inside the arcuate slide groove 25, and the connecting piece 24 is fixedly connected to the T-shaped slider 23. Medical personnel can push the connecting piece 24 to rotate 90 degrees through tweezers, and the connecting piece 24 drives the baffle 21 to rotate 90 degrees through the T-shaped slider 23, and the angle between the through groove 22 and the elastic sheet 4 can be switched.
弹性片4与连接杆8相背的侧面上矩形分布有多个第二钩刺5，并且弹性片4该侧的侧面中心处安装有摄像头7，通过摄像头7可对栓塞的位置进行把控，当弹性片4恢复成弧形状态去包裹栓塞时，第二钩刺5也会进入栓塞的内部，完成对栓塞的固定。There are multiple second hooks 5 distributed in a rectangular shape on the side of the elastic sheet 4 opposite to the connecting rod 8, and a camera 7 is installed at the center of the side of the elastic sheet 4 on this side. The position of the embolism can be controlled by the camera 7. When the elastic sheet 4 returns to an arc state to wrap the embolism, the second hooks 5 will also enter the interior of the embolism to complete the fixation of the embolism.
微导管前端2的内壁上且位于挡板21的外侧环形分布有多个第一钩刺3，弹性片4将栓塞包覆固定后，此时可将微导管前端2拔出至动脉外，在拔出的过程中，第一钩刺3可避免栓塞从微导管前端2中滑脱。A plurality of first hooks 3 are distributed in a ring shape on the inner wall of the front end 2 of the microcatheter and located outside the baffle 21. After the elastic sheet 4 covers and fixes the embolism, the front end 2 of the microcatheter can be pulled out of the artery. During the pulling-out process, the first hooks 3 can prevent the embolism from slipping out of the front end 2 of the microcatheter.
本发明提出神经介入微导管，在初始状态时，如各附图所示，弹性片4处于接近被拉直的状态，在这个状态下，弹性片4具有恢复成弧形的弹性势能。通槽22的位置与弹性片4对应，通槽22的大小可供弹性片4穿过；挡块13卡在固定环16上，同时挡块13的端部与直面171接触。The present invention provides a neurointervention microcatheter. In the initial state, as shown in the drawings, the elastic sheet 4 is in a state close to being straightened. In this state, the elastic sheet 4 has elastic potential energy to restore to an arc shape. The position of the through slot 22 corresponds to the elastic sheet 4, and the size of the through slot 22 is large enough for the elastic sheet 4 to pass through; the stopper 13 is clamped on the fixing ring 16, and the end of the stopper 13 is in contact with the straight surface 171.
使用时，对微导管前端2进行消毒处理后，使微导管前端2进入动脉，通过摄像头7可对栓塞的位置进行把控。在微导管前端2到达栓塞的附近时，停止移动微导管。随后启动气泵20进行吹气，这时活塞板18会向微导管前端2管口方向移动，活塞板18带动连接杆8移动，连接杆8带动弹性片4、挡块13、固定环16向微导管前端2管口方向移动，弹性片4穿过通槽22并逐渐接近栓塞。同时挡块13的端部会在直面171和第三斜面172上滑动，在第三斜面172上滑动时，挡块13会向连接杆8中心处靠拢。在弹性片4接触栓塞时，第一斜面14也与固定环16接触，在弹性片4具有恢复成弧形的弹性势能下，弹性片4的两端会拉动连杆11微导管前端2管口方向移动，连杆11通过滑动环9拉动弹性杆12和挡块13移动，这时第一斜面14与固定环16接触，挡块13在拉力的作用下通过第一斜面14脱离固定环16，滑动环9在该拉力的作用下向微导管前端2管口方向移动。弹性片4恢复成弧形状态去包裹栓塞的外侧，同时第二钩刺5也会进入栓塞的内部，完成对栓塞的固定。When in use, after the front end 2 of the microcatheter is disinfected, the front end 2 of the microcatheter is allowed to enter the artery, and the position of the embolism can be controlled by the camera 7. When the front end 2 of the microcatheter reaches the vicinity of the embolism, the movement of the microcatheter is stopped. Then the air pump 20 is started to blow air, and at this time the piston plate 18 will move toward the pipe mouth of the front end 2 of the microcatheter, and the piston plate 18 drives the connecting rod 8 to move, and the connecting rod 8 drives the elastic sheet 4, the block 13, and the fixing ring 16 to move toward the pipe mouth of the front end 2 of the microcatheter, and the elastic sheet 4 passes through the through groove 22 and gradually approaches the embolism. At the same time, the end of the block 13 will slide on the straight surface 171 and the third inclined surface 172. When sliding on the third inclined surface 172, the block 13 will move closer to the center of the connecting rod 8. When the elastic sheet 4 contacts the plug, the first inclined surface 14 also contacts the fixed ring 16. When the elastic sheet 4 has the elastic potential energy to restore to an arc shape, the two ends of the elastic sheet 4 will pull the connecting rod 11 to move toward the tube mouth of the front end 2 of the microcatheter. The connecting rod 11 pulls the elastic rod 12 and the stopper 13 to move through the sliding ring 9. At this time, the first inclined surface 14 contacts the fixed ring 16. The stopper 13 is separated from the fixed ring 16 through the first inclined surface 14 under the action of the pulling force. The sliding ring 9 moves toward the tube mouth of the front end 2 of the microcatheter under the action of the pulling force. The elastic sheet 4 restores to an arc shape to wrap the outside of the plug, and at the same time, the second hook 5 will also enter the inside of the plug to complete the fixation of the plug.
然后控制气泵20进行吸气，使活塞板18向气泵20方向移动，活塞板18带动连接杆8向气泵20方向移动，连接杆8带动弹性片4、滑动环9、固定环16向气泵20方向移动，弹性片4和第二钩刺5带动栓塞向微导管前端2的内部移动。在这个移动的过程中，连接杆8通过滑动环9带动弹性杆12和挡块13移动会使第二斜面15与连接板17左端接触，在第二斜面15的作用下，弹性杆12过程中使挡块13向连接杆8中心处靠拢，弹性杆12和挡块13顺利通过两个连接板17的左端。Then the air pump 20 is controlled to inhale, so that the piston plate 18 moves toward the air pump 20, the piston plate 18 drives the connecting rod 8 to move toward the air pump 20, the connecting rod 8 drives the elastic sheet 4, the sliding ring 9, and the fixing ring 16 to move toward the air pump 20, and the elastic sheet 4 and the second hook 5 drive the plug to move toward the inside of the front end 2 of the microcatheter. In this moving process, the connecting rod 8 drives the elastic rod 12 and the stopper 13 to move through the sliding ring 9, which makes the second inclined surface 15 contact with the left end of the connecting plate 17. Under the action of the second inclined surface 15, the elastic rod 12 makes the stopper 13 move closer to the center of the connecting rod 8, and the elastic rod 12 and the stopper 13 pass through the left ends of the two connecting plates 17 smoothly.
在弹性片4向气泵20方向移动到初始位置时，暂时停止气泵20。此时栓塞处于微导管前端2的内壁中，向外拔出微导管前端2，随后再次启动气泵20进行吹气，使连接杆8带动弹性片4向微导管前端2管口方向移动将栓塞从微导管前端2中推出，最后医务人员将栓塞从弹性片4上清除。When the elastic sheet 4 moves to the initial position in the direction of the air pump 20, the air pump 20 is temporarily stopped. At this time, the embolism is in the inner wall of the front end 2 of the microcatheter, and the front end 2 of the microcatheter is pulled out, and then the air pump 20 is started again to blow air, so that the connecting rod 8 drives the elastic sheet 4 to move toward the tube opening of the front end 2 of the microcatheter to push the embolism out of the front end 2 of the microcatheter, and finally the medical staff removes the embolism from the elastic sheet 4.
接着控制气泵20吸气使弹性片4向气泵20方向移动，当弹性片4完全处于挡板21的内侧时，关闭气泵20。然后医务人员通过镊子推动连接件24旋转90度，连接件24通过T形滑块23带动挡板21旋转90度，这时通槽22与弹性片4处于垂直状态。再次启动气泵20进行吹气，使连接杆8带动弹性片4向微导管前端2管口方向移动，此时因弹性片4的两端的固定块6受挡板21的阻挡而不可移动，而连接杆8继续推动弹性片4的中部，使弹性片4会由弧形状态变成拉直状态。在这个变化的过程中，弹性片4的两端会通过连杆11推动滑动环9向气泵20方向移动，滑动环9带动弹性杆12和挡块13向气泵20方向移动靠近固定环16，待第二斜面15与固定环16接触后，在第二斜面15的作用下，挡块13向连接杆8中心靠拢，进而使弹性杆12和挡块13顺利通过固定环16，之后在弹性杆12的弹性作用下使挡块13卡在固定环16上。关闭气泵20，然后医务人员可通过镊子推动连接件24反向旋转90度，连接件24通过T形滑块23带动挡板21反向旋转90度，这时通槽22与弹性片4处于对应状态，此时微导管调试至初始状态，便于下次使用。Then, the air pump 20 is controlled to inhale air so that the elastic sheet 4 moves toward the air pump 20. When the elastic sheet 4 is completely inside the baffle 21, the air pump 20 is turned off. Then, the medical staff pushes the connecting piece 24 to rotate 90 degrees through forceps, and the connecting piece 24 drives the baffle 21 to rotate 90 degrees through the T-shaped slider 23. At this time, the through groove 22 and the elastic sheet 4 are in a vertical state. The air pump 20 is started again to blow air, so that the connecting rod 8 drives the elastic sheet 4 to move toward the tube opening of the front end 2 of the microcatheter. At this time, the fixing blocks 6 at both ends of the elastic sheet 4 are blocked by the baffle 21 and cannot move, and the connecting rod 8 continues to push the middle part of the elastic sheet 4, so that the elastic sheet 4 changes from the arc state to the straightened state. During this change, the two ends of the elastic sheet 4 will push the sliding ring 9 to move toward the air pump 20 through the connecting rod 11, and the sliding ring 9 drives the elastic rod 12 and the block 13 to move toward the air pump 20 and close to the fixed ring 16. After the second inclined surface 15 contacts the fixed ring 16, the block 13 moves toward the center of the connecting rod 8 under the action of the second inclined surface 15, so that the elastic rod 12 and the block 13 can pass through the fixed ring 16 smoothly, and then the block 13 is stuck on the fixed ring 16 under the elastic action of the elastic rod 12. Turn off the air pump 20, and then the medical staff can push the connector 24 to rotate 90 degrees in the opposite direction through tweezers. The connector 24 drives the baffle 21 to rotate 90 degrees in the opposite direction through the T-shaped slider 23. At this time, the through slot 22 and the elastic sheet 4 are in a corresponding state, and the microcatheter is debugged to the initial state for the next use.
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210084452.7ACN114948043B (en) | 2022-01-25 | 2022-01-25 | Nerve-in microcatheter and methods of use thereof |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210084452.7ACN114948043B (en) | 2022-01-25 | 2022-01-25 | Nerve-in microcatheter and methods of use thereof |
| Publication Number | Publication Date |
|---|---|
| CN114948043A CN114948043A (en) | 2022-08-30 |
| CN114948043Btrue CN114948043B (en) | 2024-07-30 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210084452.7AActiveCN114948043B (en) | 2022-01-25 | 2022-01-25 | Nerve-in microcatheter and methods of use thereof |
| Country | Link |
|---|---|
| CN (1) | CN114948043B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109938794A (en)* | 2019-04-10 | 2019-06-28 | 郑州大学第一附属医院 | A covered nerve intervention microcatheter |
| CN111658049A (en)* | 2020-06-27 | 2020-09-15 | 泰州品青医疗器械有限公司 | Disposable negative pressure haemorrhoids ligation device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6562052B2 (en)* | 1995-08-24 | 2003-05-13 | Sutura, Inc. | Suturing device and method |
| US7819892B2 (en)* | 2005-06-02 | 2010-10-26 | Codman & Shurtleff, Inc. | Embolic coil delivery system with spring wire release mechanism |
| CN113317825A (en)* | 2021-05-18 | 2021-08-31 | 阜外华中心血管病医院 | Atrial septal defect plugging and conveying device thereof |
| CN113796916A (en)* | 2021-11-19 | 2021-12-17 | 杭州康基医疗器械有限公司 | Repeating metal clamp |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109938794A (en)* | 2019-04-10 | 2019-06-28 | 郑州大学第一附属医院 | A covered nerve intervention microcatheter |
| CN111658049A (en)* | 2020-06-27 | 2020-09-15 | 泰州品青医疗器械有限公司 | Disposable negative pressure haemorrhoids ligation device |
| Publication number | Publication date |
|---|---|
| CN114948043A (en) | 2022-08-30 |
| Publication | Publication Date | Title |
|---|---|---|
| JP5584204B2 (en) | Device and method for removing occlusive material from body lumen | |
| US20240016506A1 (en) | Kidney stone suction device | |
| US10716586B2 (en) | Apparatus and methods for removing obstructive material from body lumens | |
| CN107280723B (en) | Medical tissue clamp releasing device | |
| CN106659512B (en) | Withdrawing device and associated method of use | |
| JP2018519912A (en) | Recovery device and method of use related thereto | |
| WO2015176361A1 (en) | Hemostatic clip | |
| CN104095668B (en) | Special-shaped ball bellows ureteral calculus stops extractor | |
| CN104095667A (en) | Covered basket type ureteral calculus blockage extractor | |
| CN114948043B (en) | Nerve-in microcatheter and methods of use thereof | |
| CN105852933B (en) | A braided ureteral stone blocking extractor | |
| CN107898487A (en) | A kind of universal thrombus with bionical jellyfish convergent-divergent broken takes device | |
| CN212490042U (en) | a clip device | |
| CN109700487A (en) | Conveyer and transportation system | |
| CN112998771B (en) | Plugging system | |
| CN219126617U (en) | Upper digestive tract hemostasis foreign matter removal assembly | |
| CN204336988U (en) | A kind of can the hemostatic clamp Clip Applier of non-return release | |
| CN212547090U (en) | Disposable calculus plugging device | |
| WO2022257542A1 (en) | Insertable tissue clamping apparatus and movement rod thereof | |
| CN102389325B (en) | A kind of surgical operation reinforced suturing device | |
| CN108079423B (en) | A propeller for surgical intubation | |
| CN217244656U (en) | A magnetic traction forceps | |
| CN221654443U (en) | A continuous hemostatic clip capable of opening and closing repeatedly | |
| CN206198005U (en) | Connectionless elastic separating plier | |
| CN118845153A (en) | A clamping device for removing thrombus on the inner wall of arteriovenous fistula |
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |