技术领域technical field
本发明涉及一种输尿管扭曲专用辅助支撑导丝，属于医疗器械领域。The invention relates to a special auxiliary support guide wire for twisted ureter, which belongs to the field of medical equipment.
背景技术Background technique
输尿管结石是泌尿科最常见的疾病之一。随着近十余年来内镜技术的迅猛发展，输尿管镜下碎石术是治疗输尿管中、下段结石最为常用的方法之一，相比传统输尿管切开取石而言，输尿管镜下碎石术具有手术可重复性、手术无创性、术后恢复快、患者痛苦少等优势，现已经在县级医院开始大量推广使用。Ureteral calculus is one of the most common diseases in urology. With the rapid development of endoscopic technology in the past ten years, ureteroscopic lithotripsy is one of the most commonly used methods for the treatment of middle and lower ureteral stones. Compared with traditional ureterolithotomy, ureteroscopic lithotripsy It has the advantages of reproducible surgery, non-invasive surgery, fast postoperative recovery, and less pain for patients. It has been widely used in county-level hospitals.
目前制约输尿管镜下碎石术成功与否的关键点除了医生的操作水平外，主要是输尿管镜能否顺利到达输尿管结石部位。实际中，因输尿管较为狭窄，在进行输尿管镜碎石术时常遇到输尿管扭曲段，从而导致输尿管镜无法上行至结石部位。现有技术中，针对输尿管狭窄的问题，部分医院采用输尿管扩展器、球囊导管、冷刀切开等内镜下解决方式，而对于输尿管扭曲，一般通过超滑导丝等导向结构进行导向，导丝前端设置具有柔韧性的导向段，导向段后方的导丝部分柔韧性逐渐减小，以使导丝有足够纵向推力且方便转向，但是遇到输尿管扭曲程度较大时，上述导丝的导向段容易抵住扭曲段内壁导致导丝无法继续上行，从而影响手术的正常进行，增加患者的痛苦。据发明人统计，输尿管扭曲硬镜或软镜无法通过输尿管扭曲段在发明人所在医院发生的概率约为3%左右。故急需设计出一种结构简单、使用方便且能很好地协助输尿管镜顺利通过输尿管扭曲段的辅助器械。At present, the key point that restricts the success of ureteroscopic lithotripsy is whether the ureteroscope can reach the ureteral calculus smoothly in addition to the doctor's operation level. In practice, due to the relatively narrow ureter, a twisted section of the ureter is often encountered during ureteroscopic lithotripsy, resulting in the inability of the ureteroscope to ascend to the stone site. In the prior art, for the problem of ureteral stenosis, some hospitals adopt endoscopic solutions such as ureteral dilators, balloon catheters, and cold knife incision. For ureteral distortion, it is generally guided by guiding structures such as ultra-smooth guide wires. The front end of the guide wire is provided with a flexible guide segment, and the flexibility of the guide wire part behind the guide segment gradually decreases so that the guide wire has sufficient longitudinal thrust and is easy to turn. The guide segment is easy to resist the inner wall of the twisted segment, so that the guide wire cannot continue to go upward, thereby affecting the normal operation of the operation and increasing the pain of the patient. According to the inventor's statistics, the probability that the twisted ureteral mirror or soft mirror cannot pass through the twisted section of the ureter occurs in about 3% of the inventor's hospital. Therefore, there is an urgent need to design an auxiliary device that is simple in structure, easy to use, and can well assist the ureteroscope to pass through the twisted section of the ureter.
发明内容Contents of the invention
针对上述现有技术存在的不足，本发明的目的是提供一种结构设计更为合理输尿管扭曲专用辅助支撑导丝。In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a special auxiliary support guide wire for ureteral distortion with more reasonable structural design.
为实现上述目的，本发明采用的技术方案是：输尿管扭曲专用辅助支撑导丝，其特征在于，包括导丝外鞘、导丝内芯，其中导丝外鞘远端设计成钝头、封闭状，导丝外鞘近端开口，导丝内芯置于导向外鞘内部空心处且导丝内芯远端与导丝外鞘固定、导丝内芯近端伸出导向外鞘外；导丝外鞘是由靠近远端的导向段和靠近近端的竖直段构成，其中导丝外鞘的导向段是由软质的可拉伸壁与软质的不可拉伸壁围合而成且在推动导丝内芯时导向段整体向不可拉伸壁侧弯曲，导丝外鞘竖直段及导丝内芯均是采用硬质材料制作而成。In order to achieve the above purpose, the technical solution adopted in the present invention is: special auxiliary support guide wire for twisted ureter, which is characterized in that it includes a guide wire outer sheath and a guide wire inner core, wherein the distal end of the guide wire outer sheath is designed to be blunt and closed. , the proximal end of the guide wire outer sheath is open, the guide wire inner core is placed in the hollow inside the guide wire sheath and the distal end of the guide wire inner core is fixed with the guide wire outer sheath, and the proximal end of the guide wire inner core protrudes out of the guide wire sheath; the guide wire The outer sheath is composed of a guide section near the distal end and a vertical section near the proximal end, wherein the guide section of the guide wire outer sheath is surrounded by a soft stretchable wall and a soft non-stretchable wall. When the inner core of the guide wire is pushed, the whole guide section bends toward the non-stretchable wall side, and the vertical section of the guide wire outer sheath and the inner core of the guide wire are both made of hard materials.
上述可拉伸壁的制作材质选用软质橡胶并做成褶皱状，不可拉伸壁的制作材质也选用软质橡胶并做成平滑状，可拉伸壁与不可拉伸壁之间以粘接或是熔接或是其他方式连接在一起，导丝外鞘竖直段采用硬质橡胶制作而成，导丝内芯采用金属材质制作而成。The above-mentioned stretchable wall is made of soft rubber and made into a wrinkled shape, and the non-stretchable wall is also made of soft rubber and made into a smooth shape. The stretchable wall and the non-stretchable wall are bonded together. Either welded or connected together in other ways, the vertical section of the guide wire outer sheath is made of hard rubber, and the guide wire inner core is made of metal material.
上述可拉伸壁的制作材质选用软质橡胶并做成平滑状，不可拉伸壁的制作材质选用PVC、硅胶、TPE中的一种并做成平滑状，可拉伸壁与不可拉伸壁之间采用粘接或是熔接的方式连接在一起，导丝外鞘竖直段采用硬质橡胶制作而成，导丝内芯采用金属材质制作而成。The above-mentioned stretchable wall is made of soft rubber and made smooth. The non-stretchable wall is made of PVC, silica gel, and TPE and made smooth. The stretchable wall and the non-stretchable wall They are connected together by bonding or welding, the vertical section of the guide wire outer sheath is made of hard rubber, and the guide wire inner core is made of metal material.
上述可拉伸壁的制作材质选用软质橡胶并做成平滑状，不可拉伸壁的制作材质也选用软质橡胶并做成平滑状，但可拉伸壁的壁厚要小于不可拉伸壁的壁厚，导丝外鞘竖直段采用硬质橡胶制作而成，导丝内芯采用金属材质制作而成。The above-mentioned stretchable wall is made of soft rubber and made smooth, and the non-stretchable wall is also made of soft rubber and made smooth, but the thickness of the stretchable wall is smaller than that of the non-stretchable wall. The wall thickness of the guide wire outer sheath is made of hard rubber, and the guide wire inner core is made of metal material.
上述导丝外鞘的导向段长度为1cm，导丝外鞘的竖直段为40cm，导丝外鞘的直径为1-1.5mm。The length of the guiding section of the guide wire sheath is 1 cm, the vertical section of the guide wire sheath is 40 cm, and the diameter of the guide wire sheath is 1-1.5 mm.
与现有技术相比，本发明具备的有益效果是：通过导丝外鞘、导丝内芯等的特殊设计，不管是手术操作娴熟者还是手术操作初学者，均能够协助输尿管镜顺利通过输尿管弯曲部位，尤其是较为狭窄的扭曲部也能顺利通过，保证了手术的正常且安全进行，而且操作简单，造价低廉，值得大力推广。Compared with the prior art, the present invention has the beneficial effect that through the special design of the guide wire outer sheath and the guide wire inner core, it can assist the ureteroscope to pass through the ureter smoothly, regardless of whether it is a skilled operation or a beginner in operation. The curved part, especially the relatively narrow twisted part, can also pass through smoothly, which ensures the normal and safe operation of the operation, and is easy to operate and low in cost, so it is worthy of vigorous promotion.
附图说明Description of drawings
图1为本发明在不推动导丝内芯时的结构剖视图Fig. 1 is a cross-sectional view of the structure of the present invention when the inner core of the guide wire is not pushed
图2为本发明在推动导丝内芯时的结构剖视图Figure 2 is a cross-sectional view of the structure of the present invention when pushing the inner core of the guide wire
其中，1、导丝外鞘，1.1、导向段，1.11、可拉伸壁，1.12、不可拉伸壁，1.2、竖直段，2、导丝内芯。Wherein, 1. guide wire outer sheath, 1.1, guide section, 1.11, stretchable wall, 1.12, non-stretch wall, 1.2, vertical section, 2, guide wire inner core.
具体实施方式Detailed ways
现在结合附图，对本发明作进一步描述。显然，不能因此将本发明限制在所述的实施例范围之中。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，均应属于本发明的保护范围。需要说明的是，当组成部件被称为“固定于”另一部件，它可以直接在另一个部件上或者也可以存在居中的部件。当一个部件被认为是“连接”另一个部件，它可以是直接连接到另一个部件或者可能同时存在的居中部件。本说明书所使用的术语“左“、”右”、“前”、“后”以及类似的表达只是为了说明的目的，下述实施例中未注明型号、尺寸、条件，按照常规方法，或按照商品说明书选择。Now in conjunction with accompanying drawing, the present invention will be further described. Obviously, the invention is not to be restricted to the described embodiments thereby. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. It should be noted that when a component is said to be “fixed” to another component, it may be directly on the other component or there may be an intervening component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or may be an intervening component that exists at the same time. The terms "left", "right", "front", "rear" and similar expressions used in this specification are only for the purpose of illustration. The following examples do not indicate the model, size, condition, according to the conventional method, or Choose according to the product manual.
实施例一Embodiment one
如图1、图2所示，本发明的输尿管扭曲专用辅助支撑导丝，包括导丝外鞘1、导丝内芯2，其中导丝外鞘1远端设计成钝头、封闭状，导丝外鞘1近端开口，导丝内芯2置于导向外鞘1内部空心处且导丝内芯2远端与导丝外鞘1远端的中心点固定（固定的方式可在导丝外鞘1远端中心点内壁上加工筒状定位部，导丝内芯的远端卡设在筒状定位部内）、导丝内芯2近端伸出导向外鞘1外；导丝外鞘1是由靠近远端的导向段1.1和靠近近端的竖直段1.2构成，其中导丝外鞘1的导向段1.1是由软质的可拉伸壁1.11与软质的不可拉伸壁1.12围合而成且在推动导丝内芯2时导向段1.1整体向不可拉伸壁1.12侧弯曲，导丝外鞘1竖直段1.2采用硬质橡胶材质制作而成，导丝内芯2采用金属材质（比如铁）制作而成。As shown in Fig. 1 and Fig. 2, the special auxiliary support guide wire for ureteral distortion of the present invention comprises a guide wire sheath 1 and a guide wire inner core 2, wherein the distal end of the guide wire sheath 1 is designed to be blunt and closed, and the guide wire The proximal end of the wire outer sheath 1 is open, the guide wire inner core 2 is placed in the hollow inside the guide wire sheath 1 and the distal end of the guide wire inner core 2 is fixed at the central point of the distal end of the guide wire outer sheath 1 (the fixing method can be in the guide wire A cylindrical positioning part is processed on the inner wall of the center point of the distal end of the outer sheath 1, and the distal end of the guide wire inner core is clamped in the cylindrical positioning part), the proximal end of the guide wire inner core 2 protrudes outside the guiding outer sheath 1; the guide wire outer sheath 1 is composed of a guide section 1.1 near the distal end and a vertical section 1.2 near the proximal end, wherein the guide section 1.1 of the guide wire outer sheath 1 is composed of a soft stretchable wall 1.11 and a soft non-stretchable wall 1.12 It is enclosed and the guide section 1.1 bends toward the non-stretchable wall 1.12 as a whole when the guidewire inner core 2 is pushed. The vertical section 1.2 of the guidewire outer sheath 1 is made of hard rubber, and the guidewire inner core 2 is made of Made of metal material (such as iron).
可拉伸壁1.11的制作材质选用软质橡胶并做成褶皱状，不可拉伸壁1.12的制作材质也选用软质橡胶并做成平滑状，可拉伸壁1.11与不可拉伸壁1.12之间以粘接或是熔接或是现有技术中的其他方式连接在一起，若是以粘接或是熔接的方式，则需后期打磨，使最终的导丝外鞘外表光滑，导丝外鞘竖直段采用硬质橡胶制作而成，导丝内芯采用金属材质制作而成。同样，导丝外鞘导向段与竖直段之间也可采用熔接的方式连接在一起。可拉伸壁1.11的壁厚与不可拉伸壁1.12的壁厚一致。The stretchable wall 1.11 is made of soft rubber and made into a wrinkled shape, and the non-stretchable wall 1.12 is made of soft rubber and made smooth. Between the stretchable wall 1.11 and the non-stretchable wall 1.12 It is connected together by bonding or welding or other methods in the prior art. If it is by bonding or welding, it needs to be polished later to make the final guidewire sheath smooth and vertical. The section is made of hard rubber, and the inner core of the guide wire is made of metal. Similarly, the guide wire outer sheath guide section and the vertical section can also be connected together by welding. The wall thickness of the stretchable wall 1.11 corresponds to the wall thickness of the non-stretchable wall 1.12.
导丝外鞘的导向段长度为1cm，导丝外鞘的竖直段为40cm，导丝外鞘的直径为1-1.5mm。The length of the guiding section of the guide wire sheath is 1 cm, the vertical section of the guide wire sheath is 40 cm, and the diameter of the guide wire sheath is 1-1.5 mm.
实施例二Embodiment two
除以下不同外，其余均同实施例一：Except following difference, all the other are the same as embodiment one:
可拉伸壁1.11的制作材质选用软质橡胶并做成平滑状，不可拉伸壁1.12的制作材质选用PVC、硅胶、TPE中的一种并做成平滑状，不可拉伸壁1.12材质的弹性系数要大于可拉伸壁1.11材质的弹性系数，可拉伸壁1.11的壁厚与不可拉伸壁1.12的壁厚一致，可拉伸壁1.11与不可拉伸壁1.12之间采用粘接或是熔接的方式连接在一起。The stretchable wall 1.11 is made of soft rubber and made smooth; the non-stretchable wall 1.12 is made of PVC, silica gel, or TPE and made smooth; the non-stretchable wall 1.12 is elastic. The coefficient is greater than the elastic coefficient of the material of the stretchable wall 1.11, the wall thickness of the stretchable wall 1.11 is consistent with the wall thickness of the non-stretchable wall 1.12, and the stretchable wall 1.11 and the non-stretchable wall 1.12 are bonded or connected together by welding.
实施例三Embodiment three
除以下不同外，其余均同实施例一：Except following difference, all the other are the same as embodiment one:
可拉伸壁1.11的制作材质选用软质橡胶并做成平滑状，不可拉伸壁1.12的制作材质也选用软质橡胶并做成平滑状，但可拉伸壁1.11的壁厚要小于不可拉伸壁1.12的壁厚，一般控制可拉伸壁1.11的壁厚为不可拉伸壁1.12的1/4-1/2。可拉伸壁1.11与不可拉伸壁1.12之间一体成型方式连接在一起。The stretchable wall 1.11 is made of soft rubber and made smooth, and the non-stretchable wall 1.12 is made of soft rubber and smooth, but the thickness of the stretchable wall 1.11 is smaller than that of the non-stretchable wall. The wall thickness of the stretchable wall 1.12 is generally controlled to be 1/4-1/2 of the non-stretchable wall 1.12. The stretchable wall 1.11 is integrally connected with the non-stretchable wall 1.12.
使用时，将本发明的导丝置入输尿管内镜工作鞘，一同向输尿管推送，当本发明的导丝远端抵达输尿管弯曲部位时，推动导丝内芯，使导丝前端的导向段弯曲，然后沿着弯曲方向进入输尿管，待导丝的导向段进入扭曲段后，推动导丝外鞘，使导丝整体沿输尿管内壁上移1cm左右，回拉导丝，使导丝的导向段伸直，在导丝外鞘的引导下，输尿管镜通过输尿管扭曲段，完成入镜操作。本发明要避免暴力操作，以免损伤输尿管。When in use, put the guide wire of the present invention into the working sheath of the ureteroscope and push it to the ureter together. When the distal end of the guide wire of the present invention reaches the bending part of the ureter, push the inner core of the guide wire to bend the guide section at the front end of the guide wire , and then enter the ureter along the bending direction. After the guiding section of the guidewire enters the twisted section, push the outer sheath of the guidewire to move the whole guidewire up about 1 cm along the inner wall of the ureter, and then pull back the guidewire so that the guiding section of the guidewire stretches. Straight, under the guidance of the outer sheath of the guide wire, the ureteroscope passes through the twisted section of the ureter to complete the endoscopic operation. The present invention will avoid violent operation, so as not to damage ureter.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276300.2ACN107802943A (en) | 2017-12-06 | 2017-12-06 | The special Auxiliary support seal wire of ureteral distortion |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276300.2ACN107802943A (en) | 2017-12-06 | 2017-12-06 | The special Auxiliary support seal wire of ureteral distortion |
| Publication Number | Publication Date |
|---|---|
| CN107802943Atrue CN107802943A (en) | 2018-03-16 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711276300.2APendingCN107802943A (en) | 2017-12-06 | 2017-12-06 | The special Auxiliary support seal wire of ureteral distortion |
| Country | Link |
|---|---|
| CN (1) | CN107802943A (en) |
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| CN118717260A (en)* | 2024-04-15 | 2024-10-01 | 上海方润医疗科技股份有限公司 | A medical suture |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20180316 |