技术领域technical field
本发明属于医疗器械领域，具体涉及一种内窥镜下自引导球囊导管。The invention belongs to the field of medical devices, in particular to an endoscopic self-guiding balloon catheter.
背景技术Background technique
现有的气管镜引导下三腔球囊导管止血的操作：经鼻/口/气管插管通道置入支气管镜，确定活动性出血部位，经支气管镜活检通道置入引导丝至活动性出血的段/叶支气管管腔，缓慢退出支气管镜，沿导丝置入球囊导管，再次经鼻/口/气管插管通道置入支气管镜，直视下观察球囊导管置入出血的段/叶支气管管腔过程，确认球囊位置后，通过近端鲁尔接头打气充填球囊膨胀固定至出血停止，避免血液从患侧涌向其他正常的健侧段支气管，可通过球囊导管近端药物注射口注入凝血酶至出血的管腔，确定无出血后再次退出支气管镜。从上述的过程描述可知，目前的三腔球囊导管止血操作复杂，需要反复交换气管镜置入，急切需要有一种可以简化上述操作的球囊导管。The operation of the existing bronchoscope-guided three-lumen balloon catheter hemostasis: insert a bronchoscope through the nasal/oral/tracheal intubation channel to determine the active bleeding site, and insert a guide wire to the active bleeding site through the bronchoscope biopsy channel. Slowly exit the bronchoscope, insert a balloon catheter along the guide wire, insert the bronchoscope again through the nasal/oral/tracheal intubation channel, and observe the bleeding segment/lobe under direct vision In the bronchial lumen process, after confirming the position of the balloon, inflate the balloon through the proximal Luer connector and fix it until the bleeding stops, so as to prevent blood from rushing from the affected side to other normal healthy side bronchi, and drugs can be passed through the proximal end of the balloon catheter. Inject thrombin into the bleeding lumen through the injection port, and withdraw the bronchoscope again after confirming that there is no bleeding. From the above description of the process, it can be known that the hemostasis operation of the current three-lumen balloon catheter is complicated, requiring repeated replacement of the bronchoscope, and there is an urgent need for a balloon catheter that can simplify the above operation.
发明内容Contents of the invention
本发明在于为了克服现有三腔球囊导管止血操作复杂，需要反复交换气管镜置入的不足，而提供一种内窥镜下自引导球囊导管，使用该球囊导管，气管镜操作无须退出气道便可进行球囊封堵，且置入时无需导丝引导，避免了以往需要反复交换引入球囊导管的复杂操作。The present invention aims to overcome the disadvantages of complicated hemostasis operation of the existing three-chamber balloon catheter and the need to repeatedly exchange the bronchoscope for insertion, and provides a self-guiding balloon catheter under the endoscope. Using the balloon catheter, the bronchoscope operation does not need to be withdrawn The airway can be occluded by the balloon, and no guide wire is required for insertion, which avoids the complicated operation of repeatedly exchanging and introducing the balloon catheter in the past.
为了实现上述目的，本发明采用的技术方案是：包括导管主体及设置在靠近导管主体远端上的球囊，其特征在于：所述导管主体中轴向设有一条充气通道，所述充气通道进口设置在导管主体近端上，充气通道的远端与所述球囊联通，所述导管主体的近端与球囊之间的充气通道中设有防止充气通道漏气的密封阀，所述导管主体的相对于球囊的远端部分构成引导头，所述引导头前段较软，后段稍硬，形成前软后硬的软硬结合结构。In order to achieve the above object, the technical solution adopted by the present invention is: comprising a catheter body and a balloon arranged near the distal end of the catheter body, characterized in that: the catheter body is axially provided with an inflation channel, and the inflation channel The inlet is arranged on the proximal end of the catheter body, the far end of the inflation channel communicates with the balloon, and a sealing valve is provided in the inflation channel between the proximal end of the catheter body and the balloon to prevent the inflation channel from leaking. The distal part of the catheter main body relative to the balloon constitutes a guide head, the front part of the guide head is relatively soft, and the rear part is slightly harder, forming a soft-hard combination structure with soft front and hard rear.
作为本发明进一步设置，所述密封阀包括整体呈圆柱状阀体，所述阀体直径与所述充气通道孔径过盈配合，由弹性材料制成，所述阀体设有贯通至另一端的通道。As a further setting of the present invention, the sealing valve includes a cylindrical valve body as a whole, the diameter of the valve body is in interference fit with the aperture of the inflation channel, and it is made of elastic material. aisle.
作为本发明进一步设置，所述阀体进气的端面设有导向凹槽。As a further configuration of the present invention, a guide groove is provided on the air intake end surface of the valve body.
作为本发明进一步设置，所述通道为设有贯通至另一端的槽缝，所述槽缝入口端设有三角凹槽构成所述导向凹槽。As a further configuration of the present invention, the channel is provided with a slot penetrating to the other end, and the entrance end of the slot is provided with a triangular groove to form the guide groove.
作为本发明进一步设置，所述导管主体的近端上还设有用于封闭充气通道进口的密封帽，所述密封帽与导管主体的近端之间呈可拆卸密封连接。As a further configuration of the present invention, the proximal end of the catheter body is further provided with a sealing cap for closing the inlet of the inflation channel, and the sealing cap is in a detachable sealing connection with the proximal end of the catheter body.
作为本发明进一步设置，所述密封帽7包括前端开口的管状主体、前端帽及弹性密封环，所述前端帽端面设有与导管主体的近端间隙配合的导管穿孔，所述弹性密封环设置在前端帽的内腔底部，弹性密封环的中心孔与导管主体的近端间隙配合，所述导管主体近端穿过所述导管穿孔及导管穿孔至前端帽的内腔，所述密封帽的开口端插入所述前端帽中并构成螺纹连接，所述密封帽的端部抵压在所述弹性密封环上构成所述与导管主体的近端之间可拆卸密封连接。As a further setting of the present invention, the sealing cap 7 includes a tubular main body with an open front end, a front end cap, and an elastic sealing ring. At the bottom of the lumen of the front-end cap, the central hole of the elastic sealing ring is matched with the proximal end of the catheter body, the proximal end of the catheter body passes through the catheter perforation and the catheter perforates to the inner cavity of the front-end cap, and the sealing cap The open end is inserted into the front end cap to form a threaded connection, and the end of the sealing cap presses against the elastic sealing ring to form a detachable sealing connection with the proximal end of the catheter main body.
与现有技术相比，使用本发明的内窥镜下自引导球囊导管进行止血的操作时，经鼻/口/气管插管通道置入支气管镜，通过气管镜活检通道置入本内窥镜下自引导球囊导管，在气管镜的观察下，通过引导头的引导作用，使球囊导管到达出血的位置，因此置入时无需导丝引导。然后在所述充气通道的进口上，用充气装置如不带针（或带针）的注射器通过的充气通道给球囊充气，使球囊充盈紧贴气道，锚固在段支气管，然后撤去充气装置，由于在充气通道的近端设有密封阀，因此球囊不会泄气，然后退出气管镜。因此可以满足大出血时气管镜操作无须退出气道便可进行球囊封堵，避免了以往需要反复交换引入球囊导管的复杂操作，在操作上具有简便、快捷的到达出血部位，把原来的插入导丝和球囊导管两步骤合二为一，达到更高效、更精准的止血目的。同时，球囊前段的引导头结构为软硬结合，可以确保插入性较好，并且可以避免戳伤气管，提高安全性。Compared with the prior art, when using the self-guiding balloon catheter under the endoscope of the present invention for hemostasis operation, the bronchoscope is inserted through the nasal/mouth/tracheal intubation channel, and the endoscope is inserted through the biopsy channel of the bronchoscope. The self-guiding balloon catheter under the microscope, under the observation of the bronchoscope, through the guiding function of the guide head, the balloon catheter reaches the position of bleeding, so there is no need for a guide wire to guide the insertion. Then, at the inlet of the inflation channel, use an inflation device such as a syringe without a needle (or with a needle) to inflate the balloon through the inflation channel, so that the balloon is inflated and close to the airway, anchored in the segmental bronchus, and then the inflation is removed device, the balloon does not deflate due to a sealing valve at the proximal end of the inflation channel, and then exits the bronchoscope. Therefore, it can meet the requirement of balloon occlusion without withdrawing from the airway during bronchoscopic operation, avoiding the complicated operation of repeatedly exchanging and introducing the balloon catheter in the past, and it is easy and fast to reach the bleeding site in operation. The two steps of guide wire and balloon catheter are combined into one to achieve more efficient and precise hemostasis. At the same time, the structure of the guide head at the front part of the balloon is a combination of soft and hard, which can ensure better insertion performance, avoid puncture of the trachea, and improve safety.
下面将结合附图及具体实施例对本发明作进一步描述。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
附图说明Description of drawings
附图1为本发明具体实施例外观示意图；Accompanying drawing 1 is the appearance schematic diagram of the specific embodiment of the present invention;
附图2为本发明具体实施例内部结构剖视图；Accompanying drawing 2 is a sectional view of the internal structure of a specific embodiment of the present invention;
附图3为附图2 I 部局部放大图；Accompanying drawing 3 is accompanying drawing 2 Part I partial enlarged view;
附图4为本发明配有密封帽具体实施例（未充气状态）外观示意图；Accompanying drawing 4 is a schematic diagram of the appearance of the specific embodiment (uninflated state) equipped with a sealing cap of the present invention;
附图5为本发明配有密封帽具体实施例（充气状态）外观示意图；Accompanying drawing 5 is the appearance schematic diagram of the specific embodiment (inflated state) equipped with sealing cap of the present invention;
附图6为本发明配有密封帽具体实施例主视图；Accompanying drawing 6 is a front view of a specific embodiment of the present invention equipped with a sealing cap;
附图7为附图6 A-A 结构剖视图；Accompanying drawing 7 is the structural sectional view of accompanying drawing 6 A-A;
附图8为附图7 I 部局部放大图；Accompanying drawing 8 is a partial enlarged view of part I of accompanying drawing 7;
附图9为附图7 II 部局部放大图；Accompanying drawing 9 is a partial enlarged view of part II of accompanying drawing 7;
附图10为本发明密封帽具体实施例外观示意图；Accompanying drawing 10 is the appearance schematic diagram of the specific embodiment of sealing cap of the present invention;
附图11为本发明密封帽具体实施例主视图；Accompanying drawing 11 is the front view of the specific embodiment of sealing cap of the present invention;
附图12为附图11 B-B结构剖视图；Accompanying drawing 12 is the sectional view of accompanying drawing 11 B-B structure;
附图13为本发明密封阀具体实施例外观示意图；Accompanying drawing 13 is the appearance schematic diagram of the specific embodiment of sealing valve of the present invention;
附图14为本发明密封阀具体实施例主视图；Accompanying drawing 14 is the front view of the embodiment of sealing valve of the present invention;
附图15为附图14 C-C 结构剖视图。Accompanying drawing 15 is the sectional view of the C-C structure of accompanying drawing 14.
具体实施方式Detailed ways
如图1-3所示，本发明的内窥镜引导下球囊导管包括导管主体1，所述导管主体1的远端设有引导头3。所述导管主体1为轴向设有一条充气通道5的管状构件，采用材料及直径可以与现有导管相同，可以有不同规格，直径以不大于2.8mm为宜，所述导管主体1上靠近远端的位置设有球囊2。为了防止远端的引导头3意外退出预定位置，球囊2之前的引导头3（远段）软硬结合部分不易过短，通常长度应在10cm以上，以10-30cm为宜，引导头前段301较软（长度约为5-20cm），引导头后段302稍硬（长度约为10-20cm），形成前软后硬的软硬结合结构，较软部分可以由略有弹性和柔性材料，采用如硅胶、TPU聚氨酯、PEBAX嵌段聚醚酰胺树脂等制成，硬度约在邵氏硬度50A-50D之间，以防止戳伤气管；稍硬部分同样可以采用硬度较高的TPU（聚氨酯）、PEBAX（嵌段聚醚酰胺树脂）、PE、PA等制成，硬度约在邵氏硬度50D-90D之间。所述充气通道进口501设置在导管主体1近端上，充气通道的远端（即充气通道出口502）与所述球囊2联通，所述导管主体1的近端与球囊2之间的充气通道5中设有密封阀4防止充气通道5漏气。球囊2可以与现有球囊2导管上的相同，球囊2鼓起后优选为圆柱状，可以降低及均匀对气管壁的压力，并有利于提高封堵效果，球囊2的轴向长度以8-15mm为宜，充气后球囊2的直径以10-30mm为宜，优选为15-25mm。As shown in FIGS. 1-3 , the endoscope-guided balloon catheter of the present invention includes a catheter body 1 , and a guide head 3 is provided at the distal end of the catheter body 1 . The catheter main body 1 is a tubular member axially provided with an inflatable passage 5. The materials and diameters used can be the same as those of existing catheters, and can have different specifications. The diameter is preferably not greater than 2.8 mm. A balloon 2 is provided at the distal end. In order to prevent the guide head 3 at the distal end from accidentally withdrawing from the predetermined position, the hard and soft part of the guide head 3 (distal section) in front of the balloon 2 should not be too short. Usually, the length should be more than 10 cm, preferably 10-30 cm. 301 is relatively soft (about 5-20cm in length), and 302 at the rear of the guide head is slightly harder (about 10-20cm in length), forming a combination of soft and hard at the front and hard at the back. The softer part can be made of slightly elastic and flexible materials , made of silica gel, TPU polyurethane, PEBAX block polyether amide resin, etc., the hardness is between Shore hardness 50A-50D to prevent the trachea from being stabbed; the slightly harder part can also use higher hardness TPU (polyurethane ), PEBAX (block polyether amide resin), PE, PA, etc., the hardness is between 50D-90D Shore hardness. The inlet 501 of the inflation channel is arranged on the proximal end of the catheter body 1, the far end of the inflation channel (that is, the outlet 502 of the inflation channel) communicates with the balloon 2, and the distance between the proximal end of the catheter body 1 and the balloon 2 A sealing valve 4 is provided in the inflation passage 5 to prevent the inflation passage 5 from leaking. The balloon 2 can be the same as that on the catheter of the existing balloon 2. The balloon 2 is preferably cylindrical after swelling, which can reduce and evenly press the pressure on the trachea wall, and is beneficial to improve the blocking effect. The axial direction of the balloon 2 The length is preferably 8-15mm, and the diameter of the balloon 2 after inflation is preferably 10-30mm, preferably 15-25mm.
本具体实施例中，如图13-15所示，所述密封阀4包括整体呈圆柱状阀体401，所述阀体401直径与所述充气通道5孔径过盈配合，由弹性材料制成，所述阀体401进气的端面设有凹槽402，所述凹槽402底部设有贯通至另一端（即出气端）的槽缝403，设置所述凹槽402，所述凹槽402优选为三角凹槽402，是为了对球囊2进行充气时，将气流汇聚在槽缝403的入口处使槽缝403扩张开，有利于气流经过槽缝403，也可以通过针头插入穿过槽缝402对球囊3进行充气。这样的密封阀4适合在导管这种狭小空间中应用，且结构较为简单，便于制作。In this specific embodiment, as shown in Figures 13-15, the sealing valve 4 includes a cylindrical valve body 401 as a whole, the diameter of the valve body 401 is interference fit with the aperture of the inflation channel 5, and is made of elastic material , the end surface of the valve body 401 is provided with a groove 402, and the bottom of the groove 402 is provided with a slot 403 that passes through to the other end (ie, the air outlet end), the groove 402 is set, and the groove 402 Preferably, it is a triangular groove 402, in order to gather the airflow at the entrance of the slot 403 to expand the slot 403 when the balloon 2 is inflated, which is beneficial for the airflow to pass through the slot 403, and can also be inserted through the slot by a needle The slit 402 inflates the balloon 3 . Such a sealing valve 4 is suitable for application in such a narrow space as a conduit, and has a relatively simple structure and is easy to manufacture.
所述密封阀4设置在充气通道5的近端，所述充气通道5的近端口（即充气通道进口501）中固定设置有环形挡圈6，防止所述密封阀4脱出。具体地，在充气通道5的近端设置一段直径及长度与密封阀4的阀体401及环形挡圈6相适配的容腔，容腔的直径较充气通道5其余部分直径略大使得内侧端形成限位肩阶，所述阀体401和环形挡圈6依次置入固定。The sealing valve 4 is arranged at the proximal end of the inflation channel 5 , and an annular retaining ring 6 is fixedly installed in the near port of the inflation channel 5 (ie, the inlet 501 of the inflation channel 5 ) to prevent the sealing valve 4 from falling out. Specifically, at the proximal end of the inflation channel 5, a cavity with a diameter and length compatible with the valve body 401 of the sealing valve 4 and the annular retaining ring 6 is provided. The diameter of the cavity is slightly larger than the diameter of the rest of the inflation channel 5 so that A limiting shoulder is formed at the end, and the valve body 401 and the annular retaining ring 6 are sequentially placed and fixed.
为了进一步提高密封性能，以提高止血效果，如图4-9所示，所述导管主体1的近端上优选还设有用于封闭充气通道进口501的密封帽7，所述密封帽7与导管主体1的近端之间呈可拆卸密封连接。In order to further improve the sealing performance and improve the hemostatic effect, as shown in Figures 4-9, the proximal end of the catheter body 1 is preferably also provided with a sealing cap 7 for closing the inlet 501 of the inflation channel, and the sealing cap 7 is connected to the catheter The proximal ends of the main body 1 are in a detachable sealing connection.
如图10-12所示，所述密封帽7包括前端开口的管状主体701、前端帽702及弹性密封环703，所述前端帽702端面设有与导管主体1的近端间隙配合的导管穿孔704，所述弹性密封环703设置在前端帽702的内腔底部，弹性密封环703的中心孔与导管主体1的近端间隙配合，所述导管主体1近端穿过所述导管穿孔704及弹性密封环703的中心孔至前端帽702的内腔，所述密封帽7的开口端插入所述前端帽702中并构成螺纹连接，所述密封帽7的端部抵压在所述弹性密封环703上，使得所述弹性密封环703弹性变形而箍紧导管主体1，由此构成所述与导管主体1的近端之间可拆卸密封连接。As shown in Figures 10-12, the sealing cap 7 includes a tubular body 701 with an open front end, a front end cap 702 and an elastic sealing ring 703, and the end surface of the front end cap 702 is provided with a catheter perforation that fits with the proximal end of the catheter body 1. 704, the elastic sealing ring 703 is arranged at the bottom of the inner cavity of the front end cap 702, the central hole of the elastic sealing ring 703 is matched with the proximal end of the catheter main body 1, and the proximal end of the catheter main body 1 passes through the catheter perforation 704 and The central hole of the elastic sealing ring 703 is connected to the inner cavity of the front end cap 702, the opening end of the sealing cap 7 is inserted into the front end cap 702 and forms a threaded connection, and the end of the sealing cap 7 is pressed against the elastic sealing On the ring 703, the elastic sealing ring 703 is elastically deformed to tighten the catheter body 1, thereby forming a detachable sealing connection with the proximal end of the catheter body 1.
作为优选方案，所述球囊2后段的导管主体1优选依次由一段略有刚性的导管和一段柔软的导管相连接组成，使球囊2之后的导管主体1为软硬结合结构，这样既确保略有刚性插入效果，又降低对病人造成鼻腔异物感，柔软部分导管的长度略长于两倍气管镜的钳道长度，以方便气管镜退出。其中所述导管主体1的略有刚性部分同样可以采用硬度较高的TPU（聚氨酯）、PEBAX（嵌段聚醚酰胺树脂）、PE、PA等制成，硬度约在邵氏硬度50D-90D之间，而柔软部分导管采用如硅胶、TPU聚氨酯、PEBAX嵌段聚醚酰胺树脂等制成，硬度约在邵氏硬度50A-50D之间。As a preferred solution, the catheter body 1 at the back section of the balloon 2 is preferably composed of a slightly rigid catheter connected with a soft catheter in turn, so that the catheter body 1 behind the balloon 2 is a combination of soft and hard structures, so that both To ensure a slightly rigid insertion effect and reduce the nasal foreign body sensation to the patient, the length of the soft part of the catheter is slightly longer than twice the length of the clamp channel of the bronchoscope to facilitate the withdrawal of the bronchoscope. The slightly rigid part of the catheter body 1 can also be made of TPU (polyurethane), PEBAX (block polyether amide resin), PE, PA, etc. with a hardness of about 50D-90D on the Shore hardness. The soft part of the catheter is made of silica gel, TPU polyurethane, PEBAX block polyether amide resin, etc., and its hardness is about 50A-50D in Shore hardness.
本发明的内窥镜引导下球囊2导管的使用方法如下：以止血的操作为例，使用本发明的可拆卸球囊2导管进行止血的操作时，经鼻/口/气管插管通道置入支气管镜，通过气管镜活检通道置入本球囊2导管，在气管镜的观察下，引导球囊2导管到达出血的位置后，此时在所述充气通道进口501上，用充气装置如不带针（或带针）的注射器通过的充气通道5给球囊2充气，使球囊2充盈紧贴气道，锚固在段支气管，然后撤去充气装置，由于在充气通道5的近端设有密封阀4，因此球囊2不会泄气，然后退出气管镜。因此可以满足大出血时气管镜操作无须退出气道便可进行球囊2封堵，避免了以往需要反复交换引入球囊2导管的复杂操作，在操作上具有简便、快捷的到达出血部位，把原来的插入导丝和球囊2导管两步骤合二为一，达到更高效、更精准的止血目的。The method of using the balloon 2 catheter under the guidance of the endoscope of the present invention is as follows: taking the operation of hemostasis as an example, when using the detachable balloon 2 catheter of the present invention to perform the operation of hemostasis, place it through the nasal/oral/tracheal intubation channel Enter the bronchoscope, insert the balloon 2 catheter through the biopsy channel of the bronchoscope, and guide the balloon 2 catheter to the bleeding position under the observation of the bronchoscope. The inflation channel 5 through which the syringe without a needle (or with a needle) passes inflates the balloon 2, so that the balloon 2 is inflated close to the airway, anchored in the segmental bronchus, and then the inflation device is removed. There is a sealing valve 4 so that the balloon 2 does not deflate and exit the bronchoscope. Therefore, it can meet the requirement of balloon 2 occlusion without withdrawing from the airway during bronchoscopic operation, avoiding the complicated operation of repeatedly exchanging and introducing the balloon 2 catheter in the past, and it is easy and fast to reach the bleeding site in operation, and the original The two steps of inserting the guide wire and the balloon 2 catheter are combined into one to achieve more efficient and precise hemostasis.
本发明不局限于上述具体实施方式，本领域普通技术人员根据本发明公开的内容，可以采用其他多种具体实施方式实施本发明的，或者凡是采用本发明的设计结构和思路，做简单变化或更改的，都落入本发明的保护范围。The present invention is not limited to the specific embodiments described above. Those skilled in the art can adopt various other specific embodiments to implement the present invention according to the content disclosed in the present invention, or make simple changes or All changes fall within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635282.5ACN110339463B (en) | 2019-07-15 | 2019-07-15 | Self-guiding saccule catheter under endoscope |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635282.5ACN110339463B (en) | 2019-07-15 | 2019-07-15 | Self-guiding saccule catheter under endoscope |
| Publication Number | Publication Date |
|---|---|
| CN110339463Atrue CN110339463A (en) | 2019-10-18 |
| CN110339463B CN110339463B (en) | 2024-05-17 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910635282.5AActiveCN110339463B (en) | 2019-07-15 | 2019-07-15 | Self-guiding saccule catheter under endoscope |
| Country | Link |
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| CN (1) | CN110339463B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120259175A1 (en)* | 2011-04-05 | 2012-10-11 | Boris Reydel | Balloon access device for endoscope |
| JP2017018209A (en)* | 2015-07-08 | 2017-01-26 | 日本ゼオン株式会社 | Endoscopic treatment tool and method of manufacturing the same |
| WO2017111164A1 (en)* | 2015-12-24 | 2017-06-29 | 日本ゼオン株式会社 | Endoscope treatment instrument |
| CN211357363U (en)* | 2019-07-15 | 2020-08-28 | 温州医科大学附属第一医院 | Self-guiding balloon catheter under endoscope |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120259175A1 (en)* | 2011-04-05 | 2012-10-11 | Boris Reydel | Balloon access device for endoscope |
| JP2017018209A (en)* | 2015-07-08 | 2017-01-26 | 日本ゼオン株式会社 | Endoscopic treatment tool and method of manufacturing the same |
| WO2017111164A1 (en)* | 2015-12-24 | 2017-06-29 | 日本ゼオン株式会社 | Endoscope treatment instrument |
| CN211357363U (en)* | 2019-07-15 | 2020-08-28 | 温州医科大学附属第一医院 | Self-guiding balloon catheter under endoscope |
| Publication number | Publication date |
|---|---|
| CN110339463B (en) | 2024-05-17 |
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