WO2020103478A1 - Device for detaching axial-flow ventricular auxiliary pump tail guide component - Google Patents
Device for detaching axial-flow ventricular auxiliary pump tail guide componentInfo
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- WO2020103478A1 WO2020103478A1 PCT/CN2019/096754 CN2019096754W WO2020103478A1 WO 2020103478 A1 WO2020103478 A1 WO 2020103478A1 CN 2019096754 W CN2019096754 W CN 2019096754W WO 2020103478 A1 WO2020103478 A1 WO 2020103478A1
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- fixing plate
- auxiliary pump
- base
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
Definitions
- the invention belongs to the technical field of medical instruments, and in particular relates to a device for disassembling the tail guide component of an axial flow ventricular auxiliary pump.
- ventricular assist pumps are mainly used internationally to prolong the life of heart failure patients, and domestic ventricular assist pumps will soon form products.
- the more widely used ventricular assist pumps are divided into axial flow ventricular assist pumps and centrifugal ventricular assist pumps, which assist the pumping function of the heart in a continuous flow of blood to maintain the blood circulation of patients with heart failure.
- Axial flow ventricular assist pump has become the most used blood pump at present due to its small size and easy implantation.
- Tens of thousands of patients with severe heart failure abroad have prolonged their lives by installing the axial flow ventricular assist pump in the past few years .
- the pump body of a mechanical axial axial ventricular auxiliary pump includes a front guide, a front bearing, a rotor impeller, a shaft, a permanent magnet, a rear bearing, a rear guide, a casing, a coil, and a housing.
- the leading of the ventricular auxiliary pump regulates the inflow of the blood pump, the rotor impeller works on the blood, and the tail guide plays a role in increasing pressure and rectifying.
- the leading and tail guides are generally installed on the inner wall of the casing by means of interference fit. After completing the animal experiment or clinical implantation test, the ventricular auxiliary pump must be disassembled to observe and analyze the thrombosis and wear in the pump.
- leading blades are relatively short, and simple forceps, hemostatic forceps, etc.
- the disassembly can be completed by tools, and the blades of the tail guide are generally longer, with a large contact area with the inner wall of the casing and a large matching force, and the tail guide cannot be disassembled by a simple tool.
- connection between the shaft and the bearing is the location of high incidence of thrombosis in the mechanical axial axial ventricular auxiliary pump. It is one of the most serious parts of the thrombosis problem in the flow channel of the axial ventricular auxiliary pump. It is axial flow The most important observation part after disassembling the ventricular auxiliary pump, so when disassembling the ventricular auxiliary pump, the mechanical damage to the position should be minimized.
- the object of the present invention is to provide a device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump, which can realize the smooth disassembly of the tail guide of the mechanical axial-ventricular auxiliary pump, without destroying the tail during the disassembly The purpose of guiding and thrombosis.
- the present invention adopts the following technical solutions:
- a device for disassembling the tail guide component of an axial flow ventricular auxiliary pump including a base, an ejection mechanism and a fixing mechanism provided on the base;
- the ejecting mechanism includes a first support and a second support provided on the base in sequence; the first support is in a "convex" shape, two ends are fixed on the base by screws, and a screw hole is provided in the middle;
- the threaded hole is provided with a threaded front ejector rod, the outer end of the front ejector rod is provided with a hand wheel, and the inner end is provided with a cylindrical connecting portion;
- the second support includes a slide with a U-shaped cross section Groove, the inner wall opposite to the slide groove is provided with an inwardly recessed dovetail groove;
- the slide groove is provided with a slider, the slider has a rectangular parallelepiped body, and two sides of the body are provided with side arms corresponding to the dovetail groove , The side arm is located in the corresponding dovetail groove, so that the slide can slide along the slide groove;
- the side of the slide facing the first support is provided with a round hole, the connecting part is located in the round hole,
- the fixing mechanism includes a third support provided on the base, the third support is in a "convex" shape, two ends are fixed on the base by screws, and a through hole is provided in the middle; the first support, the The top surfaces of both sides of the second support and the third support are respectively fixedly connected by a beam; an upper fixing plate and a lower fixing plate are arranged between the two beams, and the upper fixing plate and the lower fixing plate are located on the second branch Between the seat and the third support; the middle of the upper fixing plate bulges upward to form a semi-circular convex portion, and the middle portion of the lower fixing plate dents downward to form a semi-circular concave portion, the convex portion and the concave portion are opposite A circular fixing portion is provided; the end of the rear ejection rod can pass through the fixing portion and the through hole in sequence.
- the outer end of the front ejector rod is provided with a cylindrical adapter part, and the adapter part is provided with a rib parallel to the axis of the front ejector rod; the middle part of the hand wheel is provided with a connecting hole, which is connected The inner wall of the hole is provided with a key slot corresponding to the convex edge.
- the rear ejector rod includes a large-diameter portion and a small-diameter portion, and the two are connected through a tapered diameter-reducing variable-diameter portion, the large-diameter portion is fixedly connected to the slider, and the diameter of the small-diameter portion is smaller than State the inner diameter of the through hole.
- the beneficial effect of the present invention is that the device of the present invention for removing the tail guide component of the axial flow ventricular auxiliary pump can remove the tail guide component of the axial flow ventricular auxiliary pump without damaging the thrombus formed on the tail guide.
- the invention fixes the axial-flow ventricular auxiliary pump by the fixing mechanism, pushes the tail guide axial movement by the ejection mechanism, and pushes the tail guide out of the inner wall of the casing along the axial direction of the casing.
- the ejection mechanism mainly consists of two rotating parts Segment ejector rod, the ejector rod in contact with the tail guide has only axial movement and does not rotate, which can avoid the wear of the tail guide and the thrombus on the tail guide during the disassembly process, so as not to be observed after the ventricular auxiliary pump is disassembled
- the phenomenon in the pump is not real.
- FIG. 1 is a schematic structural view of the device for disassembling the tail guide component of an axial flow ventricular auxiliary pump according to the present invention.
- FIG. 2 is a schematic structural view of the base of the device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump of the present invention.
- FIG 3 is a schematic structural view of the first support of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
- FIG. 4 is a schematic structural view of the second support of the device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump of the present invention.
- FIG. 5 is a schematic structural view of the front ejector rod of the device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump of the present invention.
- FIG. 6 is a schematic structural view of the rear ejector rod of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
- FIG. 7 is a schematic structural view of a third support of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
- FIG. 8 is a schematic structural view of a beam of the device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump of the present invention.
- FIG. 9 is a schematic structural view of the upper fixing plate of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
- FIG. 10 is a schematic structural view of the lower fixing plate of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
- FIG. 11 is a schematic structural view of the hand wheel of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
- the present invention provides a device for disassembling the tail guide component of an axial flow ventricular auxiliary pump, which includes a base 1, an ejection mechanism 2 and a fixing mechanism 3 provided on the base 1.
- the ejecting mechanism 2 includes a first support 21 and a second support 22 that are provided on the base 1 in sequence.
- the first support 21 has a "convex" shape, and two ends are fixed on the base 1 by screws, and a screw hole 211 is provided in the middle.
- the screw hole 211 is provided with a threaded front ejector rod 23, a hand wheel 231 is provided at the outer end of the front ejector rod 23, and a cylindrical connecting portion 232 is provided at the inner end.
- the second support 22 includes a sliding groove 221 with a U-shaped cross section, and the inner walls opposite to the sliding groove 221 are all provided with a dovetail groove 222 recessed inward.
- the sliding groove 221 is provided with a slider 24.
- the slider 24 has a rectangular parallelepiped body 241. On both sides of the body 241, there are side arms 242 corresponding to the dovetail grooves 222. The side arms 242 are located in the corresponding dovetail grooves 222. Internally, the slider 24 can slide along the sliding groove 221.
- a side of the slider 24 facing the first support 21 is provided with a circular hole 243, the connecting portion 232 is located in the circular hole 243, and the other side of the slider 24 is provided with a rear ejection rod 25.
- Below the two ends of the sliding groove 221 are provided with inverted U-shaped legs 223, and the two legs 223 are fixed on the base 1 by screws.
- the fixing mechanism 3 includes a third support 31 provided on the base 1.
- the third support 31 has a “convex” shape, and both ends are fixed to the support by screws.
- a through hole 32 is provided in the middle.
- the first support 21, the second support 22, and the top surfaces of both sides of the third support 31 are fixedly connected by a beam 4 respectively.
- An upper fixing plate 41 and a lower fixing plate 42 are provided between the two beams 4.
- the upper fixing plate 41 and the lower fixing plate 42 are located between the second support 22 and the third support 31.
- a middle portion of the upper fixing plate 41 is raised upward to form a semi-circular convex portion 411, and a middle portion of the lower fixing plate 42 is depressed downward to form a semi-circular concave portion 421, and the convex portion 411 and the concave portion 421 are oppositely arranged to form a circle ⁇ ⁇ ⁇ ⁇ 43 ⁇ The fixed portion 43.
- the end of the rear ejector rod 25 can pass through the fixing portion and the through hole 32 in sequence.
- the axes of the screw hole 211, the connecting portion 232, the round hole 242, the fixing portion 43 and the through hole 32 coincide.
- the outer end of the front ejector rod 23 of the present invention is provided with a cylindrical adapter portion 233, and the adapter portion 233 is provided with a rib parallel to the axis of the front ejector rod 23 234.
- a connecting hole 235 is provided in the middle of the hand wheel 231, and an inner wall of the connecting hole 235 is provided with a key groove 236 corresponding to the convex edge 234.
- the rear ejector rod 25 includes a large-diameter portion 251 and a small-diameter portion 252, which are connected by a reduced-diameter variable-diameter portion 253.
- the large-diameter portion 251 is fixedly connected to the slider 24.
- the diameter of the small diameter portion 253 is smaller than the inner diameter of the through hole 32.
- the present invention uses the outer surface of the pump body of the ventricular auxiliary pump 5 as a clamping and fixing surface, and the ejection mechanism acts on the hub of the tail guide, and the tail guide is pushed along the ventricular auxiliary pump casing by pushing the end surface of the hub of the tail guide
- the inner wall is ejected axially.
- the rotation of the hand wheel is transmitted to the two-stage ejector rod through the thread and key structure.
- the dovetail groove structure of the rear ejector rod restricts the rotation of the rear ejector rod.
- the rear ejector rod has only axial movement.
- the invention can be used for disassembling the tail guide part of the mechanical axial axial flow ventricular auxiliary pump, which can avoid damaging the tail guide part and the thrombus on it during the disassembly process.
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Abstract
A device for detaching an axial-flow ventricular auxiliary pump tail guide component, comprising a base as well as an ejection mechanism and a fixing mechanism arranged on the base. The ejection mechanism comprises a first support and a second support; a front ejection rod penetrates through a screw hole of the first support, and a connecting part is arranged at the inner end of the front ejection rod; the second support comprises a sliding groove, and dovetail grooves are arranged on the inner wall of the sliding groove; inverted U-shaped support legs are respectively arranged under two ends of the sliding groove, a sliding block is arranged in the sliding groove, and side arms of the sliding block are located in the dovetail grooves; a round hole is formed on one side of the sliding block, the connecting part is located in the round hole, and a rear ejection rod is arranged on the other side; the fixing mechanism comprises a third support, and an upper fixing plate and a lower fixing plate are arranged between the second support and the third support; the top surfaces of the first support, the second support, and the third support on either side are fixedly connected separately by means of a crossbeam; the tail end of the rear ejection rod can penetrate through a fixing part between the upper fixing plate and the lower fixing plate and a through hole of the third support in sequence.
Description
本发明属于医疗器械技术领域，具体涉及一种用于拆卸轴流式心室辅助泵尾导部件的装置。The invention belongs to the technical field of medical instruments, and in particular relates to a device for disassembling the tail guide component of an axial flow ventricular auxiliary pump.
在缺少心脏移植供体的背景下，目前国际上主要采用安装心室辅助泵的方法延长心衰患者的生命，国内的心室辅助泵也即将形成产品。应用较广泛的心室辅助泵分为轴流式心室辅助泵和离心式心室辅助泵，以血液连续流动的方式辅助心脏的泵血功能，维持心衰病人的人体血液循环。轴流式心室辅助泵以其体积小、易植入的特点成为目前应用最多的血泵，国外已有上万例重症心衰患者在过去几年里通过安装轴流式心室辅助泵延长了生命。Against the background of lack of donors for heart transplantation, currently the method of installing ventricular assist pumps is mainly used internationally to prolong the life of heart failure patients, and domestic ventricular assist pumps will soon form products. The more widely used ventricular assist pumps are divided into axial flow ventricular assist pumps and centrifugal ventricular assist pumps, which assist the pumping function of the heart in a continuous flow of blood to maintain the blood circulation of patients with heart failure. Axial flow ventricular assist pump has become the most used blood pump at present due to its small size and easy implantation. Tens of thousands of patients with severe heart failure abroad have prolonged their lives by installing the axial flow ventricular assist pump in the past few years .
传统上，机械轴式轴流心室辅助泵的泵体包括前导、前轴承、转子叶轮、轴、永磁体、后轴承、尾导、机匣、线圈和外壳。这种心室辅助泵的前导调节血泵的入流，转子叶轮对血液做功，尾导起提高压力、整流的作用，前导和尾导一般都是采用过盈配合的方式安装于机匣内壁。完成动物实验或临床植入试验后的心室辅助泵都要被拆解开以观察分析泵内的血栓形成、磨损等情况，一般来讲前导的叶片都比较短，通过镊子、止血钳等简单的工具即可完成拆卸，而尾导的叶片一般较长，与机匣内壁接触面积大，配合力大，无法通过简单的工具完成尾导的拆卸。Traditionally, the pump body of a mechanical axial axial ventricular auxiliary pump includes a front guide, a front bearing, a rotor impeller, a shaft, a permanent magnet, a rear bearing, a rear guide, a casing, a coil, and a housing. The leading of the ventricular auxiliary pump regulates the inflow of the blood pump, the rotor impeller works on the blood, and the tail guide plays a role in increasing pressure and rectifying. The leading and tail guides are generally installed on the inner wall of the casing by means of interference fit. After completing the animal experiment or clinical implantation test, the ventricular auxiliary pump must be disassembled to observe and analyze the thrombosis and wear in the pump. Generally speaking, the leading blades are relatively short, and simple forceps, hemostatic forceps, etc. The disassembly can be completed by tools, and the blades of the tail guide are generally longer, with a large contact area with the inner wall of the casing and a large matching force, and the tail guide cannot be disassembled by a simple tool.
根据动物实验和临床试验结果统计，轴与轴承连接处是机械轴式轴流心室辅助泵内血栓高发的位置，是轴流心室辅助泵流道内血栓形成问题最严重的部位之一，是轴流式心室辅助泵拆解后最重要的观察部位，所以在拆解心室辅助泵时要尽量减少对该位置的机械破坏。因此，目前急需一种拆卸装置，以解决机械轴式轴流心室辅助泵的复杂叶型尾导的非破坏性拆卸问题，同时克服拆卸过程中容易磨损尾导和其上血栓的缺陷。According to the statistics of animal experiments and clinical trials, the connection between the shaft and the bearing is the location of high incidence of thrombosis in the mechanical axial axial ventricular auxiliary pump. It is one of the most serious parts of the thrombosis problem in the flow channel of the axial ventricular auxiliary pump. It is axial flow The most important observation part after disassembling the ventricular auxiliary pump, so when disassembling the ventricular auxiliary pump, the mechanical damage to the position should be minimized. Therefore, there is an urgent need for a disassembly device to solve the problem of non-destructive disassembly of the complex vane-shaped tail guide of the mechanical axial axial ventricular auxiliary pump, and at the same time overcome the defects of the tail guide and the thrombus on it that are easy to wear during the disassembly process.
发明内容Summary of the invention
鉴于上述问题，本发明的目的是提供一种用于拆卸轴流式心室辅助泵尾导部件的装置，其可以实现机械轴式轴流心室辅助泵尾导的顺畅拆卸、拆卸过程 中不破坏尾导及其上血栓的目的。In view of the above problems, the object of the present invention is to provide a device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump, which can realize the smooth disassembly of the tail guide of the mechanical axial-ventricular auxiliary pump, without destroying the tail during the disassembly The purpose of guiding and thrombosis.
为实现上述目的，本发明采取以下技术方案：To achieve the above objectives, the present invention adopts the following technical solutions:
一种用于拆卸轴流式心室辅助泵尾导部件的装置，包括底座及设于该底座上的顶出机构和固定机构；A device for disassembling the tail guide component of an axial flow ventricular auxiliary pump, including a base, an ejection mechanism and a fixing mechanism provided on the base;
该顶出机构包括依次设于该底座上的第一支座和第二支座；该第一支座呈“凸”字型，两端通过螺钉固定在该底座上，中部设有螺孔；该螺孔内穿设有带螺纹的前顶出杆，该前顶出杆外端设有手轮，内端设有圆柱型的连接部；该第二支座包括一个截面呈U型的滑槽，该滑槽相对的内壁均设有向内凹陷的燕尾槽；该滑槽内设有滑块，该滑块具有长方体型的本体，该本体两侧设有与该燕尾槽对应的侧臂，该侧臂位于对应的燕尾槽内，使该滑块能沿该滑槽滑动；该滑块朝向该第一支座的一侧设有圆孔，该连接部位于该圆孔内，该滑块的另一侧设有后顶出杆；该滑槽两端下方分别设有倒U型的支腿，两个支腿通过螺钉固定在该底座上；The ejecting mechanism includes a first support and a second support provided on the base in sequence; the first support is in a "convex" shape, two ends are fixed on the base by screws, and a screw hole is provided in the middle; The threaded hole is provided with a threaded front ejector rod, the outer end of the front ejector rod is provided with a hand wheel, and the inner end is provided with a cylindrical connecting portion; the second support includes a slide with a U-shaped cross section Groove, the inner wall opposite to the slide groove is provided with an inwardly recessed dovetail groove; the slide groove is provided with a slider, the slider has a rectangular parallelepiped body, and two sides of the body are provided with side arms corresponding to the dovetail groove , The side arm is located in the corresponding dovetail groove, so that the slide can slide along the slide groove; the side of the slide facing the first support is provided with a round hole, the connecting part is located in the round hole, the slide The other side of the block is provided with a rear ejection rod; the lower sides of the chute are provided with inverted U-shaped legs, and the two legs are fixed on the base by screws;
该固定机构包括设于该底座上的第三支座，该第三支座呈“凸”字型，两端通过螺钉固定在该底座上，中部设有通孔；该第一支座、该第二支座与该第三支座的两侧顶面分别通过一个横梁固定连接；两个横梁之间设有上固定板和下固定板，该上固定板和下固定板位于该第二支座和第三支座之间；该上固定板中部向上隆起形成半圆形的凸起部，该下固定板的中部向下凹陷形成半圆形的凹陷部，该凸起部和凹陷部相对设置形成圆形的固定部；该后顶出杆末端能依次穿过该固定部和该通孔。The fixing mechanism includes a third support provided on the base, the third support is in a "convex" shape, two ends are fixed on the base by screws, and a through hole is provided in the middle; the first support, the The top surfaces of both sides of the second support and the third support are respectively fixedly connected by a beam; an upper fixing plate and a lower fixing plate are arranged between the two beams, and the upper fixing plate and the lower fixing plate are located on the second branch Between the seat and the third support; the middle of the upper fixing plate bulges upward to form a semi-circular convex portion, and the middle portion of the lower fixing plate dents downward to form a semi-circular concave portion, the convex portion and the concave portion are opposite A circular fixing portion is provided; the end of the rear ejection rod can pass through the fixing portion and the through hole in sequence.
进一步的，所述螺孔、连接部、圆孔、固定部和通孔的轴线重合。Further, the axes of the screw hole, the connecting part, the round hole, the fixing part and the through hole coincide.
进一步的，所述前顶出杆外端设有圆柱型的转接部，该转接部设有与该前顶出杆轴线平行的凸棱；所述手轮中部设有连接孔，该连接孔内壁设有与该凸棱对应的键槽。Further, the outer end of the front ejector rod is provided with a cylindrical adapter part, and the adapter part is provided with a rib parallel to the axis of the front ejector rod; the middle part of the hand wheel is provided with a connecting hole, which is connected The inner wall of the hole is provided with a key slot corresponding to the convex edge.
进一步的，所述后顶出杆包括大径部和小径部，二者之间通过直径渐缩的变径部连接，该大径部与所述滑块固定连接，该小径部的直径小于所述通孔的内径。Further, the rear ejector rod includes a large-diameter portion and a small-diameter portion, and the two are connected through a tapered diameter-reducing variable-diameter portion, the large-diameter portion is fixedly connected to the slider, and the diameter of the small-diameter portion is smaller than State the inner diameter of the through hole.
本发明的有益效果是：本发明用于拆卸轴流式心室辅助泵尾导部件的装置，可以在拆卸轴流式心室辅助泵的尾导部件的同时不会破坏尾导上形成的血 栓。本发明通过固定机构将轴流式心室辅助泵固定，通过顶出机构推动尾导轴向运动，将尾导沿机匣轴向顶出机匣内壁，顶出机构主要是相互之间转动的两段顶出杆，与尾导接触的顶出杆仅有轴向运动，没有转动，可以避免在拆卸过程中磨损尾导和尾导上的血栓，以免在心室辅助泵被拆卸泵后观察到的泵内现象不真实。The beneficial effect of the present invention is that the device of the present invention for removing the tail guide component of the axial flow ventricular auxiliary pump can remove the tail guide component of the axial flow ventricular auxiliary pump without damaging the thrombus formed on the tail guide. The invention fixes the axial-flow ventricular auxiliary pump by the fixing mechanism, pushes the tail guide axial movement by the ejection mechanism, and pushes the tail guide out of the inner wall of the casing along the axial direction of the casing. The ejection mechanism mainly consists of two rotating parts Segment ejector rod, the ejector rod in contact with the tail guide has only axial movement and does not rotate, which can avoid the wear of the tail guide and the thrombus on the tail guide during the disassembly process, so as not to be observed after the ventricular auxiliary pump is disassembled The phenomenon in the pump is not real.
图1是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的结构示意图。FIG. 1 is a schematic structural view of the device for disassembling the tail guide component of an axial flow ventricular auxiliary pump according to the present invention.
图2是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的底座的结构示意图。2 is a schematic structural view of the base of the device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump of the present invention.
图3是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的第一支座的结构示意图。3 is a schematic structural view of the first support of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
图4是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的第二支座的结构示意图。4 is a schematic structural view of the second support of the device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump of the present invention.
图5是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的前顶出杆的结构示意图。5 is a schematic structural view of the front ejector rod of the device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump of the present invention.
图6是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的后顶出杆的结构示意图。6 is a schematic structural view of the rear ejector rod of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
图7是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的第三支座的结构示意图。7 is a schematic structural view of a third support of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
图8是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的横梁的结构示意图。8 is a schematic structural view of a beam of the device for disassembling the tail guide component of the axial-flow ventricular auxiliary pump of the present invention.
图9是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的上固定板的结构示意图。9 is a schematic structural view of the upper fixing plate of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
图10是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的下固定板的结构示意图。10 is a schematic structural view of the lower fixing plate of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
图11是本发明用于拆卸轴流式心室辅助泵尾导部件的装置的手轮的结构示意图。11 is a schematic structural view of the hand wheel of the device for disassembling the tail guide component of the axial flow ventricular auxiliary pump of the present invention.
以下仅以实施例说明本发明可能的实施形式，然而并非用以限制本发明所要保护的范畴。The following only illustrates the possible implementation forms of the present invention with examples, but it is not intended to limit the scope of the present invention.
如图1所示，本发明提供一种用于拆卸轴流式心室辅助泵尾导部件的装置，包括底座1及设于该底座1上的顶出机构2和固定机构3。As shown in FIG. 1, the present invention provides a device for disassembling the tail guide component of an axial flow ventricular auxiliary pump, which includes a base 1, an ejection mechanism 2 and a fixing mechanism 3 provided on the base 1.
如图1-6所示，该顶出机构2包括依次设于该底座1上的第一支座21和第二支座22。该第一支座21呈“凸”字型，两端通过螺钉固定在该底座1上，中部设有螺孔211。该螺孔211内穿设有带螺纹的前顶出杆23，该前顶出杆23外端设有手轮231，内端设有圆柱型的连接部232。该第二支座22包括一个截面呈U型的滑槽221，该滑槽221相对的内壁均设有向内凹陷的燕尾槽222。该滑槽221内设有滑块24，该滑块24具有长方体型的本体241，该本体241两侧设有与该燕尾槽222对应的侧臂242，该侧臂242位于对应的燕尾槽222内，使该滑块24能沿该滑槽221滑动。该滑块24朝向该第一支座21的一侧设有圆孔243，该连接部232位于该圆孔243内，该滑块24的另一侧设有后顶出杆25。该滑槽221两端下方分别设有倒U型的支腿223，两个支腿223通过螺钉固定在该底座1上。As shown in FIGS. 1-6, the ejecting mechanism 2 includes a first support 21 and a second support 22 that are provided on the base 1 in sequence. The first support 21 has a "convex" shape, and two ends are fixed on the base 1 by screws, and a screw hole 211 is provided in the middle. The screw hole 211 is provided with a threaded front ejector rod 23, a hand wheel 231 is provided at the outer end of the front ejector rod 23, and a cylindrical connecting portion 232 is provided at the inner end. The second support 22 includes a sliding groove 221 with a U-shaped cross section, and the inner walls opposite to the sliding groove 221 are all provided with a dovetail groove 222 recessed inward. The sliding groove 221 is provided with a slider 24. The slider 24 has a rectangular parallelepiped body 241. On both sides of the body 241, there are side arms 242 corresponding to the dovetail grooves 222. The side arms 242 are located in the corresponding dovetail grooves 222. Internally, the slider 24 can slide along the sliding groove 221. A side of the slider 24 facing the first support 21 is provided with a circular hole 243, the connecting portion 232 is located in the circular hole 243, and the other side of the slider 24 is provided with a rear ejection rod 25. Below the two ends of the sliding groove 221 are provided with inverted U-shaped legs 223, and the two legs 223 are fixed on the base 1 by screws.
如图1、图7-图10所示，该固定机构3包括设于该底座1上的第三支座31，该第三支座31呈“凸”字型，两端通过螺钉固定在该底座1上，中部设有通孔32。该第一支座21、该第二支座22与该第三支座31的两侧顶面分别通过一个横梁4固定连接。两个横梁4之间设有上固定板41和下固定板42，该上固定板41和下固定板42位于该第二支座22和第三支座31之间。该上固定板41中部向上隆起形成半圆形的凸起部411，该下固定板42的中部向下凹陷形成半圆形的凹陷部421，该凸起部411和凹陷部421相对设置形成圆形的固定部43。该后顶出杆25末端能依次穿过该固定部和该通孔32。优选的，该螺孔211、连接部232、圆孔242、固定部43和通孔32的轴线重合。As shown in FIGS. 1, 7 and 10, the fixing mechanism 3 includes a third support 31 provided on the base 1. The third support 31 has a “convex” shape, and both ends are fixed to the support by screws. On the base 1, a through hole 32 is provided in the middle. The first support 21, the second support 22, and the top surfaces of both sides of the third support 31 are fixedly connected by a beam 4 respectively. An upper fixing plate 41 and a lower fixing plate 42 are provided between the two beams 4. The upper fixing plate 41 and the lower fixing plate 42 are located between the second support 22 and the third support 31. A middle portion of the upper fixing plate 41 is raised upward to form a semi-circular convex portion 411, and a middle portion of the lower fixing plate 42 is depressed downward to form a semi-circular concave portion 421, and the convex portion 411 and the concave portion 421 are oppositely arranged to form a circle形 的 固定 部 43。 The fixed portion 43. The end of the rear ejector rod 25 can pass through the fixing portion and the through hole 32 in sequence. Preferably, the axes of the screw hole 211, the connecting portion 232, the round hole 242, the fixing portion 43 and the through hole 32 coincide.
具体来说，如图5所示，本发明的该前顶出杆23外端设有圆柱型的转接部233，该转接部233设有与该前顶出杆23轴线平行的凸棱234。如图11所示，该手轮231中部设有连接孔235，该连接孔235内壁设有与该凸棱234对应的键槽236。如图6所示，该后顶出杆25包括大径部251和小径部252，二者之间通过直径渐缩的变径部253连接，该大径部251与该滑块24固定连接，该小径部253的直径小于该通孔32的内径。Specifically, as shown in FIG. 5, the outer end of the front ejector rod 23 of the present invention is provided with a cylindrical adapter portion 233, and the adapter portion 233 is provided with a rib parallel to the axis of the front ejector rod 23 234. As shown in FIG. 11, a connecting hole 235 is provided in the middle of the hand wheel 231, and an inner wall of the connecting hole 235 is provided with a key groove 236 corresponding to the convex edge 234. As shown in FIG. 6, the rear ejector rod 25 includes a large-diameter portion 251 and a small-diameter portion 252, which are connected by a reduced-diameter variable-diameter portion 253. The large-diameter portion 251 is fixedly connected to the slider 24. The diameter of the small diameter portion 253 is smaller than the inner diameter of the through hole 32.
如图1所示，本发明以心室辅助泵5的泵体外表面作为装夹固定面，顶出 机构作用于尾导的轮毂，通过推动尾导的轮毂端面位置将尾导沿心室辅助泵机匣内壁轴向顶出，手轮转动通过螺纹和键结构传递给两段式顶出杆，后顶出杆的燕尾槽结构限制了后顶出杆的旋转，后顶出杆仅有轴向运动而自身并不转动，这样后顶出杆和尾导轮毂端面是相对静止的，后顶出杆只给尾导一个向前的推动力，可以避免后顶出杆和尾导轮毂端面之间存在旋转运动而导致的在拆卸过程中磨损掉尾导及其上血栓的情况出现。本发明可以用于拆卸机械轴式轴流心室辅助泵的尾导部件，可以避免在拆卸过程中损伤尾导部件及其上的血栓。As shown in FIG. 1, the present invention uses the outer surface of the pump body of the ventricular auxiliary pump 5 as a clamping and fixing surface, and the ejection mechanism acts on the hub of the tail guide, and the tail guide is pushed along the ventricular auxiliary pump casing by pushing the end surface of the hub of the tail guide The inner wall is ejected axially. The rotation of the hand wheel is transmitted to the two-stage ejector rod through the thread and key structure. The dovetail groove structure of the rear ejector rod restricts the rotation of the rear ejector rod. The rear ejector rod has only axial movement. It does not rotate by itself, so that the rear ejector rod and the end surface of the tail guide hub are relatively stationary, and the rear ejector rod only gives the tail guide a forward urging force, which can avoid rotation between the rear ejector rod and the end surface of the tail guide hub The movement leads to the wear of the tail guide and the thrombus on it during disassembly. The invention can be used for disassembling the tail guide part of the mechanical axial axial flow ventricular auxiliary pump, which can avoid damaging the tail guide part and the thrombus on it during the disassembly process.
本发明是以所述的权利要求所限定的。但基于此，本领域的普通技术人员可以做出种种显然的变化或改动，都应在本发明的主要精神和保护范围之内。The invention is defined by the claims. However, based on this, a person of ordinary skill in the art can make various obvious changes or modifications, which should fall within the main spirit and protection scope of the present invention.
Claims (4)
- 一种用于拆卸轴流式心室辅助泵尾导部件的装置，其特征在于，包括底座及设于该底座上的顶出机构和固定机构；A device for disassembling the tail guide component of an axial flow ventricular auxiliary pump, characterized in that it includes a base, an ejection mechanism and a fixing mechanism provided on the base;该顶出机构包括依次设于该底座上的第一支座和第二支座；该第一支座呈“凸”字型，两端通过螺钉固定在该底座上，中部设有螺孔；该螺孔内穿设有带螺纹的前顶出杆，该前顶出杆外端设有手轮，内端设有圆柱型的连接部；该第二支座包括一个截面呈U型的滑槽，该滑槽相对的内壁均设有向内凹陷的燕尾槽；该滑槽内设有滑块，该滑块具有长方体型的本体，该本体两侧设有与该燕尾槽对应的侧臂，该侧臂位于对应的燕尾槽内，使该滑块能沿该滑槽滑动；该滑块朝向该第一支座的一侧设有圆孔，该连接部位于该圆孔内，该滑块的另一侧设有后顶出杆；该滑槽两端下方分别设有倒U型的支腿，两个支腿通过螺钉固定在该底座上；The ejecting mechanism includes a first support and a second support provided on the base in sequence; the first support is in a "convex" shape, two ends are fixed on the base by screws, and a screw hole is provided in the middle; The threaded hole is provided with a threaded front ejector rod, the outer end of the front ejector rod is provided with a hand wheel, and the inner end is provided with a cylindrical connecting portion; the second support includes a slide with a U-shaped cross section Groove, the inner wall opposite to the slide groove is provided with an inwardly recessed dovetail groove; the slide groove is provided with a slider, the slider has a rectangular parallelepiped body, and two sides of the body are provided with side arms corresponding to the dovetail groove , The side arm is located in the corresponding dovetail groove, so that the slide can slide along the slide groove; the side of the slide facing the first support is provided with a round hole, the connecting part is located in the round hole, the slide The other side of the block is provided with a rear ejection rod; the lower sides of the chute are provided with inverted U-shaped legs, and the two legs are fixed on the base by screws;该固定机构包括设于该底座上的第三支座，该第三支座呈“凸”字型，两端通过螺钉固定在该底座上，中部设有通孔；该第一支座、该第二支座与该第三支座的两侧顶面分别通过一个横梁固定连接；两个横梁之间设有上固定板和下固定板，该上固定板和下固定板位于该第二支座和第三支座之间；该上固定板中部向上隆起形成半圆形的凸起部，该下固定板的中部向下凹陷形成半圆形的凹陷部，该凸起部和凹陷部相对设置形成圆形的固定部；该后顶出杆末端能依次穿过该固定部和该通孔。The fixing mechanism includes a third support provided on the base, the third support is in a "convex" shape, two ends are fixed on the base by screws, and a through hole is provided in the middle; the first support, the The top surfaces of both sides of the second support and the third support are respectively fixedly connected by a beam; an upper fixing plate and a lower fixing plate are arranged between the two beams, and the upper fixing plate and the lower fixing plate are located on the second branch Between the seat and the third support; the middle of the upper fixing plate bulges upward to form a semi-circular convex portion, and the middle portion of the lower fixing plate dents downward to form a semi-circular concave portion, the convex portion and the concave portion are opposite A circular fixing portion is provided; the end of the rear ejection rod can pass through the fixing portion and the through hole in sequence.
- 根据权利要求1所述的用于拆卸轴流式心室辅助泵尾导部件的装置，其特征在于：所述螺孔、连接部、圆孔、固定部和通孔的轴线重合。The device for disassembling the tail guide part of the axial flow ventricular auxiliary pump according to claim 1, wherein the axes of the screw hole, the connecting portion, the round hole, the fixing portion and the through hole coincide.
- 根据权利要求1或2所述的用于拆卸轴流式心室辅助泵尾导部件的装置，其特征在于：所述前顶出杆外端设有圆柱型的转接部，该转接部设有与该前顶出杆轴线平行的凸棱；所述手轮中部设有连接孔，该连接孔内壁设有与该凸棱对应的键槽。The device for disassembling the tail guide component of an axial flow ventricular auxiliary pump according to claim 1 or 2, characterized in that: the outer end of the front ejector rod is provided with a cylindrical adapter portion, and the adapter portion is provided with There is a rib parallel to the axis of the front ejector rod; a connection hole is provided in the middle of the hand wheel, and an inner wall of the connection hole is provided with a keyway corresponding to the rib.
- 根据权利要求1或2所述的用于拆卸轴流式心室辅助泵尾导部件的装置，其特征在于：所述后顶出杆包括大径部和小径部，二者之间通过直径渐缩的变径部连接，该大径部与所述滑块固定连接，该小径部的直径小于所述通孔 的内径。The device for disassembling the tail guide component of an axial flow ventricular auxiliary pump according to claim 1 or 2, characterized in that the rear ejector rod includes a large-diameter portion and a small-diameter portion, and the diameter is gradually reduced between the two The variable-diameter portion is connected, the large-diameter portion is fixedly connected to the slider, and the diameter of the small-diameter portion is smaller than the inner diameter of the through hole.
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| CN201811381997.4 | 2018-11-20 | ||
| CN201811381997.4A CN109227468B (en) | 2018-11-20 | 2018-11-20 | Device for disassembling axial-flow type ventricular assist pump tail guide part |
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| WO2020103478A1 true WO2020103478A1 (en) | 2020-05-28 |
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| PCT/CN2019/096754 WO2020103478A1 (en) | 2018-11-20 | 2019-07-19 | Device for detaching axial-flow ventricular auxiliary pump tail guide component |
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| WO (1) | WO2020103478A1 (en) |
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| CN112692778A (en) * | 2020-11-30 | 2021-04-23 | 沪东重机有限公司 | Disassembling tool for top buffer piston of hydraulic piston |
| TWI789152B (en) * | 2021-12-09 | 2023-01-01 | 立晏企業有限公司 | Removal and installation tool |
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| CN109227468B (en) * | 2018-11-20 | 2023-12-05 | 中国医学科学院阜外医院 | Device for disassembling axial-flow type ventricular assist pump tail guide part |
| CN110480569B (en) * | 2019-08-23 | 2021-03-26 | 李花 | Cam rotor pump rotor detacher |
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| CN109227468A (en) | 2019-01-18 |
| CN109227468B (en) | 2023-12-05 |
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