技术领域technical field
本发明涉及医疗器械领域，更具体地说，涉及一种输尿管支架装置。The invention relates to the field of medical instruments, and more specifically, relates to a ureter stent device.
背景技术Background technique
输尿管支架管一种医疗器械，外形为一根细长的软管。当输尿管因结石、瘢痕狭窄、肿瘤等造成梗阻时，可以通过将输尿管支架管植入病人体内，用以支撑输尿管，从而使尿液能够从肾脏引流到膀胱。同时，输尿管手术(包括输尿管镜检、碎石和输尿管开放手术)和肾盂手术(例如：肾盂切开取石、肾盂整形、经皮肾镜碎石等)常规也需要放置输尿管支架管。目前还没有任何一种输尿管支架管可以永久的留置在体内，在使用一段时间后，需要通过侵入性操作来拔除输尿管支架管，通常为膀胱镜操作。膀胱镜操作虽然算不上大手术，但会对病人带来较大的痛苦，对于男性病人尤其明显，手术过程中需要对病人进行局部麻醉或全身麻醉以减轻痛苦。而且，拔管时会对尿路组织造成程度不一的损伤，使其发生感染和水肿，一些病例常常需急诊治疗。A ureteral stent is a medical device in the form of a long, thin tube. When the ureter is obstructed by stones, scar stenosis, tumor, etc., a ureteral stent can be implanted in the patient to support the ureter so that urine can drain from the kidney to the bladder. At the same time, ureteral surgery (including ureteroscopy, lithotripsy, and open ureteral surgery) and renal pelvis surgery (eg, pyelolithotomy, pelvis plasticity, percutaneous nephrolithotomy, etc.) routinely require placement of ureteral stents. At present, there is no ureteral stent that can be permanently placed in the body. After a period of use, it is necessary to remove the ureteral stent through an invasive operation, usually by cystoscopy. Although cystoscopic operation is not a major operation, it will bring great pain to the patient, especially for male patients. During the operation, the patient needs to be given local or general anesthesia to relieve the pain. Moreover, extubation will cause varying degrees of damage to the urinary tract tissue, causing infection and edema, and some cases often require emergency treatment.
为了解决上述的问题，本领域技术人员研究出了一种带有牵引线的输尿管支架管。请参考图1，该输尿管支架管包括支架管本体1和牵引线2，其中，支架管本体1的结构与现有的输尿管支架管相同，牵引线2的一端与支架管本体1固定相连，另一端为自由端与支架管本体相分离，牵引线2的自由端缠绕在支架管本体1的端部，外部涂有可降解涂层3。In order to solve the above problems, those skilled in the art have developed a ureteral stent with a pull wire. Please refer to Fig. 1, the ureteral stent includes a stent body 1 and a pulling wire 2, wherein the structure of the stent body 1 is the same as that of an existing ureteral stent, one end of the pulling wire 2 is fixedly connected to the stent body 1, and the other One end is a free end that is separated from the stent tube body, the free end of the pull wire 2 is wound around the end of the stent tube body 1 , and the outside is coated with a degradable coating 3 .
这种带有牵引线的输尿管支架管在植入病人体内时与普通输尿管支架管相同，但连接有牵引线的一端朝向病人体外。该输尿管支架管在植入病人体内一段时间后，可降解涂层逐渐分解，牵引线失去可降解涂层的包裹后会随尿液的流动逐渐伸展开，其自由端最终随尿液排出体外，此时如果需要取出输尿管支架管，即可从尿道口牵拉牵引线，进而将植入体内的输尿管支架管取出。This ureteral stent with pulling wire is the same as the common ureteral stent when it is implanted in the patient's body, but the end connected with the pulling wire faces outside the patient's body. After the ureteral stent is implanted in the patient for a period of time, the degradable coating gradually decomposes, and the traction wire will gradually stretch out with the flow of urine after losing the wrapping of the degradable coating, and its free end will eventually be excreted with the urine. At this time, if the ureteral stent needs to be taken out, the traction wire can be pulled from the urethral opening, and then the ureteral stent implanted in the body can be taken out.
但是，在使用上述的输尿管支架管时，牵引线在可降解涂层分解后随尿液排出体外。此时如果还没有达到取出输尿管支架管的条件，不论从给病人带来新的痛苦的角度，还是从经济成本的角度来说，都不宜向病人体内再次植入新的输尿管支架管。而已经排出病人体外的牵引线的自由端悬于尿道口，首先，从卫生的角度来说，露出的线头容易沾染污物，污物如果经牵引线进入病人体内，容易造成感染；其次，牵引线露出的线头容易引起病人的不适。However, when the above-mentioned ureteral stent is used, the pull wire is excreted with urine after the degradable coating is decomposed. If the condition for taking out the ureteral stent has not been reached at this time, no matter from the perspective of bringing new pain to the patient or from the perspective of economic cost, it is not suitable to reimplant a new ureteral stent in the patient's body. And the free end of the traction line that has been discharged from the patient's body is suspended at the urethral opening. First, from a hygienic point of view, the exposed thread end is easily contaminated with dirt. If the dirt enters the patient's body through the traction line, it is easy to cause infection; The exposed thread end of the thread is likely to cause discomfort to the patient.
由以上所述，如何提供一种输尿管支架装置，在实现现有输尿管支架管功能的前提下，解决现有输尿管支架管的牵引线容易沾染污物造成感染及容易引起病人不适的问题。From the above, how to provide a ureteral stent device, on the premise of realizing the function of the existing ureteral stent tube, solve the problem that the pulling wire of the existing ureteral stent tube is easily contaminated with dirt, causing infection and causing discomfort to the patient.
发明内容Contents of the invention
有鉴于此，本发明提供一种输尿管支架装置，在实现现有输尿管支架管功能的前提下，解决现有输尿管支架管的牵引线容易沾染污物造成感染及容易引起病人不适的问题。In view of this, the present invention provides a ureteral stent device. On the premise of realizing the function of the existing ureteral stent, it solves the problem that the pulling wire of the existing ureteral stent is easily contaminated with dirt, causing infection and causing discomfort to the patient.
为实现上述目的，本发明提供如下技术方案：To achieve the above object, the present invention provides the following technical solutions:
一种输尿管支架装置，包括：A ureteral stent device comprising:
输尿管支架管，输尿管支架管包括支架管本体和牵引线，其中，牵引线包括磁性吸附段和处于自由展开状态时使牵引线长度小于在植入病人体内后支架管本体尾部至病人尿道口的长度的弹性段，弹性段为弹性丝线或螺旋状弹力线，弹性段设置在支架管本体与磁性吸附段之间，磁性吸附段为设置有间断铁芯的丝线；和Ureteral stent tube, the ureteral stent tube includes a stent tube body and a traction line, wherein the traction line includes a magnetic adsorption segment and is in a freely unfolded state so that the length of the traction line is less than the length from the tail of the stent tube body to the patient's urethral opening after being implanted in the patient's body an elastic section, the elastic section is an elastic thread or a spiral elastic thread, the elastic section is arranged between the bracket tube body and the magnetic adsorption section, and the magnetic adsorption section is a silk thread provided with an intermittent iron core; and
导尿管，导尿管包括外鞘和内芯，内芯可滑动地套装于外鞘内，外鞘的头部内表面和内芯的外表面围成牵引线固定腔，内芯靠近自身头部处设置有磁性部。Urinary catheter, the catheter includes an outer sheath and an inner core, the inner core is slidably sleeved in the outer sheath, the inner surface of the head of the outer sheath and the outer surface of the inner core form a traction line fixed cavity, and the inner core is close to its own head A magnetic part is provided at the part.
优选地，在上述的输尿管支架装置中，螺旋状弹力线为高分子生物相容性材料制成的螺旋形弹力线。Preferably, in the above ureteral stent device, the helical elastic thread is a helical elastic thread made of polymer biocompatible material.
优选地，在上述的输尿管支架装置中，磁性吸附段还包括箍在丝线外部的铁质材料环。Preferably, in the above-mentioned ureteral stent device, the magnetic adsorption segment further includes an iron material ring hooped outside the wire.
优选地，在上述的输尿管支架装置中，导尿管为柔性硅胶导尿管。Preferably, in the above ureteral stent device, the catheter is a flexible silicone catheter.
优选地，在上述的输尿管支架装置中，牵引线规则盘绕在支架管本体的尾部，牵引线外由可降解材料包裹。Preferably, in the above-mentioned ureteral stent device, the pulling wire is regularly coiled at the tail of the stent tube body, and the outside of the pulling wire is wrapped with a degradable material.
优选地，在上述的输尿管支架装置中，内芯的头部设置有导引头，导引头为柔软的椭圆球体，椭圆球体的横截面最大半径大于导尿管其它部位横截面的最大半径。Preferably, in the above ureteral stent device, the head of the inner core is provided with a guide head, the guide head is a soft ellipsoid, and the maximum radius of the cross section of the ellipsoid is greater than the maximum radius of the cross section of other parts of the catheter.
优选地，在上述的输尿管支架装置中，磁性部为磁性橡胶块。Preferably, in the above ureteral stent device, the magnetic part is a magnetic rubber block.
本发明提供了一种输尿管支架装置，包括输尿管支架管和导尿管，其中，输尿管支架管包括支架管本体和牵引线，牵引线包括磁性吸附段和处于自由展开状态时使牵引线长度小于在植入病人体内后支架管本体尾部至病人尿道口的长度的弹性段，弹性段为弹性丝线或螺旋状弹力线，弹性段设置在支架管本体与磁性吸附段之间，磁性吸附段为设置有间断铁芯的丝线；导尿管包括外鞘和内芯，内芯可滑动地套装于外鞘之中，外鞘头部的内表面与内芯的外表面围成牵引线固定腔，内芯靠近自身头部处设置有磁性部。The invention provides a ureteral stent device, comprising a ureteral stent tube and a urinary catheter, wherein the ureteral stent tube includes a stent tube body and a pulling wire, and the pulling wire includes a magnetic adsorption section and the length of the pulling wire is less than that in a freely expanded state. After being implanted in the patient's body, the elastic section is the length from the tail of the stent tube body to the patient's urethra. The elastic section is an elastic thread or a helical elastic line. The silk thread of the intermittent iron core; the urinary catheter includes an outer sheath and an inner core, the inner core is slidably sleeved in the outer sheath, the inner surface of the outer sheath head and the outer surface of the inner core enclose a traction wire fixing cavity, and the inner core A magnetic part is provided near the head.
在使用本发明所提供的输尿管支架装置时，首先，将输尿管支架管植入病人体内，其植入过程与现有的输尿管支架管相同；输尿管支架管在植入病人体内一定时间后，牵引线在病人体内依靠尿液的流动展开，由于弹性段此时处于自由展开状态，牵引线的长度小于支架管本体尾部到病人尿道口的长度，因此牵引线不会露出。需要将输尿管支架管取出时，利用本发明提供的导尿管，采用常规留置导尿管操作将导尿管送入前尿道，利用磁性部吸附牵引线后，通过向后拉动内芯使牵引线被嵌入牵引线固定腔，然后整体向外拉动导尿管，可使牵引线顺利引出尿道口，此时即可通过拉拽牵引线，将输尿管支架管从病人体内取出。When using the ureteral stent device provided by the present invention, at first, the ureteral stent is implanted in the patient, and the implantation process is the same as that of the existing ureteral stent; Rely on the flow of urine in the patient's body to unfold, because the elastic section is in a freely unfolded state at this time, the length of the traction wire is less than the length from the tail of the stent tube body to the patient's urethra, so the traction wire will not be exposed. When it is necessary to take out the ureteral stent tube, use the urinary catheter provided by the present invention to send the catheter into the anterior urethra by using the conventional indwelling catheter operation, use the magnetic part to absorb the traction wire, and pull the inner core backward to make the traction wire It is embedded in the traction wire fixing cavity, and then the catheter is pulled outward as a whole, so that the traction wire can be smoothly led out of the urethral opening. At this time, the ureteral stent can be taken out of the patient's body by pulling the traction wire.
与现有的牵引线相比，本发明所提供的输尿管支架装置在使用过程中牵引线完全停留在病人体内，不会沾染外界污物，也就不会因牵引线的污染而导致病人感染，同时，病人也不会因露出体外的线头而感到不适。Compared with the existing pulling wire, the pulling wire of the ureteral stent device provided by the present invention completely stays in the patient's body during use, and will not be contaminated with external dirt, and will not cause infection of the patient due to the pollution of the pulling wire. At the same time, the patient will not feel uncomfortable due to the thread exposed outside the body.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1为现有技术中带有牵引线的输尿管支架管的结构示意图；Fig. 1 is the structural representation of the ureteral stent tube that has pulling wire in the prior art;
图2为本发明实施例所提供的输尿管支架装置的结构示意图；2 is a schematic structural view of a ureteral stent device provided by an embodiment of the present invention;
图3为本发明实施例所提供设置有铁质材料环的牵引线的结构示意图。Fig. 3 is a schematic structural diagram of a pulling wire provided with an iron material ring according to an embodiment of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，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。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动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 following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
本发明实施例公开了一种输尿管支架装置，在实现现有输尿管支架管功能的前提下，解决现有输尿管支架管的牵引线容易沾染污物造成感染及容易引起病人不适的问题。The embodiment of the invention discloses a ureteral stent device. On the premise of realizing the functions of the existing ureteral stent tube, it solves the problem that the pulling wire of the existing ureteral stent tube is easily contaminated with dirt, causing infection and causing discomfort to patients.
一种输尿管支架装置，如图2所示，包括输尿管支架管和导尿管。A ureteral stent device, as shown in Figure 2, includes a ureteral stent tube and a urinary catheter.
其中，输尿管支架管包括支架管本体21和牵引线22，支架管本体21为中空的管状结构，其材料采用医用高分子材料，例如：聚乙烯、硅树脂、硅酮为基础的嵌段共聚物、苯乙烯/乙烯/丁烯的嵌段共聚物等。在支架管本体21的管壁上设置有若干个导尿孔211。另外，支架管本体的两端均弯曲成圆弧形，支架管本体的两端和分别向相反的方向弯曲，弯曲后，支架管本体的一端弯曲成的圆弧形和支架管本体的另一端弯曲成的圆弧形分别位于支架管本体的两侧。Wherein, the ureteral stent includes a stent body 21 and a pulling wire 22. The stent body 21 is a hollow tubular structure, and its material is made of medical polymer materials, such as polyethylene, silicone resin, and silicone-based block copolymers. , Block copolymers of styrene/ethylene/butylene, etc. Several urinary catheterization holes 211 are provided on the tube wall of the stent tube body 21 . In addition, both ends of the stent tube body are bent into an arc shape, and the two ends of the stent tube body are bent in opposite directions respectively. After bending, one end of the stent tube body is bent into an arc shape and the other end of the stent tube body The curved arcs are respectively located on both sides of the stent tube body.
牵引线22包括磁性吸附段和弹性段，磁性吸附段为设置有间断铁芯的丝线，弹性段为弹性丝线或螺旋状弹力线，弹性段设置在支架管本体21与磁性吸附段之间，弹性段处于自由展开状态时，牵引线22的长度小于支架管本体21在植入后其尾部到病人尿道口的长度。牵引线22缠绕在支架管本体21的尾部，缠绕后在支架管本体21上的长度在4-6cm。牵引线22的一端与支架管本体21的尾部相固定，另一端从支架管本体21的中部向支架管本体21的尾部开始缠绕，牵引线22的这种缠绕方向与支架管本体21放入人体后，尿液排出的方向一致，即牵引线22可以随着尿液的流动而松开，并且可以防止牵引线22在体内打结。牵引线22可以在支架管本体21上缠绕一层，另外，也可以根据牵引线22的粗细情况，在支架管本体21上缠绕多层。同时，牵引线外部包裹有可降解材料，以保证规则缠绕的牵引线在植入过程中不会散乱。The traction wire 22 includes a magnetic adsorption section and an elastic section, the magnetic adsorption section is a silk thread provided with an intermittent iron core, the elastic section is an elastic silk thread or a helical elastic line, the elastic section is arranged between the support tube body 21 and the magnetic adsorption section, and the elastic section is When the segment is in a freely expanded state, the length of the pulling wire 22 is less than the length from the tail of the stent tube body 21 to the patient's urethral orifice after implantation. The pulling wire 22 is wound around the tail of the stent tube body 21, and the length on the stent tube body 21 after winding is 4-6 cm. One end of the pull wire 22 is fixed to the tail of the support tube body 21, and the other end starts to wind from the middle of the support tube body 21 to the tail of the support tube body 21. Finally, the direction of urine discharge is consistent, that is, the pulling wire 22 can be loosened along with the flow of urine, and the pulling wire 22 can be prevented from being knotted in the body. The pulling wire 22 can be wound on the stent tube body 21 in one layer, and also can be wound on the stent tube body 21 in multiple layers according to the thickness of the pulling wire 22 . At the same time, the traction wire is wrapped with degradable materials to ensure that the regularly wound traction wire will not be scattered during the implantation process.
导尿管23包括外鞘231和内芯232，内芯232可滑动地套装于外鞘231内。外鞘23 1的头部内表面为圆锥状斜面，圆锥状斜面与内芯232的外表面围成了牵引线固定腔。内芯由柔软的硅胶制成；内芯头部靠后位置设置有磁性部2321。优选的，磁性部2321为与内芯外形相同的磁性橡胶块。外鞘同样由柔软的硅胶制成。The urinary catheter 23 includes an outer sheath 231 and an inner core 232 , and the inner core 232 is slidably sleeved in the outer sheath 231 . The inner surface of the head of the outer sheath 231 is a conical inclined surface, and the outer surface of the conical inclined surface and the inner core 232 surrounds a traction wire fixing cavity. The inner core is made of soft silica gel; a magnetic part 2321 is provided at the position behind the head of the inner core. Preferably, the magnetic part 2321 is a magnetic rubber block having the same shape as the inner core. The outer sheath is also made of soft silicone.
在使用本发明所提供的输尿管支架装置时，首先，将输尿管支架管植入病人的体内，其植入过程与现有的输尿管支架管相同；输尿管支架管在植入病人体内一定时间后，牵引线在病人体内依靠尿液的流动展开，由于弹性段此时处于自由展开的状态，牵引线的长度小于支架管本体尾部到病人尿道口的长度，因此牵引线不会露出。在需要将输尿管支架管取出时，利用本发明所提供的导尿管，采用常规留置导尿管操作将导尿管送入前尿道，利用磁性部吸附牵引线后，向后拉动内芯，使牵引线嵌入牵引线固定腔，然后整体向外拉动导尿管，可使牵引线顺利引出尿道口，此时即可通过拉拽牵引线，将输尿管支架管从病人体内取出。When using the ureteral stent device provided by the present invention, at first, the ureteral stent is implanted in the body of the patient, and the implantation process is the same as that of the existing ureteral stent; The wire is deployed in the patient's body by the flow of urine. Since the elastic section is in a state of free expansion at this time, the length of the pulling wire is less than the length from the tail of the stent tube body to the patient's urethral opening, so the pulling wire will not be exposed. When it is necessary to take out the ureteral stent tube, use the urinary catheter provided by the present invention to send the catheter into the anterior urethra by using conventional indwelling catheter operation, use the magnetic part to absorb the traction wire, and then pull the inner core backward to make The traction wire is embedded in the traction wire fixing cavity, and then the catheter is pulled outward as a whole, so that the traction wire can be smoothly drawn out of the urethral opening. At this time, the ureteral stent can be taken out of the patient's body by pulling the traction wire.
与现有的输尿管支架管相比，本发明实施例所提供的输尿管支架装置采用了具有磁性吸附部，且自由展开时长度小于支架管本体末端到病人尿道口长度的牵引线，还包括具有磁性段和牵引线固定腔的导尿管。在使用过程中，牵引线始终处于病人的体内，在需要取出输尿管支架管时，通过导尿管磁性部和输尿管支架管牵引线的磁性吸附部的互相吸引确定牵引线的位置，并利用导尿管上的牵引线固定腔将牵引线与导尿管固定，从病人体内引出牵引线，最终通过拉拽牵引线将输尿管支架管从病人体内取出。Compared with the existing ureteral stent tube, the ureteral stent device provided by the embodiment of the present invention adopts a pull wire with a magnetic adsorption part, and the length is less than the length from the end of the stent tube body to the patient's urethral opening when it is freely deployed, and also includes a magnetic Segments and pull wires fix the lumen of the catheter. During use, the pulling wire is always in the patient's body. When it is necessary to take out the ureteral stent tube, the position of the pulling wire is determined by the mutual attraction between the magnetic part of the catheter and the magnetic adsorption part of the pulling wire of the ureteral stent tube. The traction wire fixing chamber on the tube fixes the traction wire and the urinary catheter, draws the traction wire out of the patient's body, and finally removes the ureteral stent tube from the patient's body by pulling the traction wire.
优选的，在上述实施例的基础上，本发明实施例采用螺旋状弹力线作为牵引线的弹性段，弹力线的螺旋半径略大于支架管本体半径，弹力线可以依靠自身的螺旋套装与支架管本体外侧，有利于输尿管支架管的制作。同时，螺旋状弹力线在被拉伸时通过解开螺旋以增加长度，此过程中弹力线的横截面直径变化较小，抗拉伸强度更高。Preferably, on the basis of the above-mentioned embodiments, the embodiment of the present invention uses a helical elastic wire as the elastic section of the pulling wire. The helical radius of the elastic wire is slightly larger than the radius of the stent tube body, and the elastic wire can rely on its own spiral sleeve and the stent tube. The outside of the body is conducive to the production of ureteral stents. At the same time, the helical elastic thread increases in length by unwinding the helix when it is stretched. During this process, the cross-sectional diameter of the elastic thread changes less and the tensile strength is higher.
优选地，在上述实施例中，螺旋状弹力线为由高分子生物相容性材料制成的螺旋状弹力线，高分子生物相容性材料保证了在植入病人体内后，牵引线不会引起病人的不良反应。Preferably, in the above embodiments, the helical elastic thread is a helical elastic thread made of a biocompatible polymer material, which ensures that the traction thread will not cause adverse reactions in patients.
在上述实施例的基础上，本发明所提供的输尿管支架装置的磁性吸附段还包括箍设在丝线外部的铁质材料环。On the basis of the above embodiments, the magnetic adsorption section of the ureteral stent device provided by the present invention further includes an iron material ring hooped outside the wire.
请参考图3，为了保证牵引线能够被顺利取出，在上述实施例的基础上，本实施例所提供的牵引线22在磁性吸附段的外部箍有多个铁质材料环2211。在使用配套医疗器械吸引牵引线的吸附段时，箍在磁性吸附段丝线外的铁质材料环增大了牵引线与医疗器械之间的磁力，使得在取出牵引线时牵引线能够更容易被医疗器械所吸引。Please refer to FIG. 3 , in order to ensure that the pulling wire can be taken out smoothly, on the basis of the above embodiments, the pulling wire 22 provided in this embodiment has a plurality of ferrous material rings 2211 around the outside of the magnetic adsorption section. When using supporting medical equipment to attract the suction section of the traction wire, the iron material ring hooped outside the magnetic adsorption section wire increases the magnetic force between the traction wire and the medical device, making it easier for the traction wire to be pulled out when the traction wire is taken out. Attracted by medical devices.
优选的，丝线上相邻两个铁质材料环之间的距离不小于丝线半径与铁质材料环半径之和，以保证丝线具有良好的可弯曲性。Preferably, the distance between two adjacent ferrous material rings on the wire is not less than the sum of the radius of the wire and the radius of the ferrous material ring, so as to ensure that the wire has good bendability.
为了便于输尿管支架管的安装和减轻病人在植入输尿管支架管后的不适感觉，本发明实施例所提供的输尿管支架装置利用柔性硅胶制成，能够任意弯曲改变形状，以更好的贴合输尿管、前尿道的形状。In order to facilitate the installation of the ureteral stent and reduce the patient’s discomfort after implanting the ureteral stent, the ureteral stent provided by the embodiment of the present invention is made of flexible silica gel, which can be bent and changed at will to better fit the ureter , The shape of the anterior urethra.
同时，导尿管内芯的头部设置有椭圆球体状的导引头，其横截面的最大半径大于导尿管其它部位的最大半径。导尿管在病人尿道中进行操作时，导引头能够起到保护作用，避免尿道粘膜被导尿管其它部位损伤。At the same time, the head of the inner core of the urinary catheter is provided with an ellipsoid-shaped guide head, and the maximum radius of its cross section is larger than that of other parts of the urinary catheter. When the urinary catheter is operated in the patient's urethra, the guide head can play a protective role to prevent the urethral mucosa from being damaged by other parts of the urinary catheter.
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210055494.4ACN102579171B (en) | 2012-03-05 | 2012-03-05 | Ureteral stent device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210055494.4ACN102579171B (en) | 2012-03-05 | 2012-03-05 | Ureteral stent device |
| Publication Number | Publication Date |
|---|---|
| CN102579171A CN102579171A (en) | 2012-07-18 |
| CN102579171Btrue CN102579171B (en) | 2015-03-18 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210055494.4AExpired - Fee RelatedCN102579171B (en) | 2012-03-05 | 2012-03-05 | Ureteral stent device |
| Country | Link |
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| CN (1) | CN102579171B (en) |
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