技术领域technical field
本发明涉及腹腔镜术中止血领域，具体地涉及一种腹腔镜术中止血粉喷洒用导管总成。The invention relates to the field of hemostasis during laparoscopic surgery, in particular to a catheter assembly for spraying hemostasis powder during laparoscopic surgery.
背景技术Background technique
腹腔镜是一种带有微型摄像头的器械。腹腔镜手术就是利用腹腔镜及其相关器械进行的手术：使用冷光源提供照明，将腹腔镜镜头(直径为3-10mm) 插入腹腔内，运用数字摄像技术使腹腔镜镜头拍摄到的图像通过光导纤维传导至后级信号处理系统，并且实时显示在专用监视器上。然后医生通过监视器屏幕上所显示患者器官不同角度的图像，对病人的病情进行分析判断，并且运用特殊的腹腔镜器械进行手术。腹腔镜手术多采用2-4孔操作法，其中一个开在人体的肚脐眼上，避免在病人腹腔部位留下长条状的伤疤，恢复后，仅在腹腔部位留有1-3个0.5-1厘米的线状疤痕，可以说是创面小，痛楚小的手术，因此也有人称之为“钥匙孔”手术。腹腔镜手术的开展，减轻了病人开刀的痛楚，同时使病人的恢复期缩短，并且相对降低了患者的支出费用，是近年来发展迅速的一个手术项目。A laparoscope is an instrument with a tiny camera. Laparoscopic surgery is the use of laparoscopy and its related instruments: using a cold light source to provide illumination, inserting a laparoscopic lens (3-10mm in diameter) into the abdominal cavity, and using digital camera technology to make the image captured by the laparoscopic lens pass through the light guide The fibers are conducted to the post-stage signal processing system and displayed on a dedicated monitor in real time. Then the doctor analyzes and judges the patient's condition through the images of different angles of the patient's organs displayed on the monitor screen, and uses special laparoscopic instruments for surgery. Laparoscopic surgery mostly adopts 2-4 hole operation method, one of which is opened on the belly button of the human body to avoid leaving long scars in the abdominal cavity of the patient. After recovery, only 1-3 holes of 0.5- A 1 cm linear scar can be said to be a small wound and less painful operation, so some people call it "keyhole" surgery. The development of laparoscopic surgery relieves the pain of surgery, shortens the patient's recovery period, and relatively reduces the patient's expenses. It is a surgical project that has developed rapidly in recent years.
随着腹腔镜技术发展和器械的改进，腹腔镜手术在临床应用中日益增多。腹腔镜下可吸收性止血材料广泛应用，止血粉作为其中一种技术，在临床中广泛应用，可以确保手术视野清晰，减少术后引流，防止术后粘连和感染，促进组织修复愈合，促骨生长，广泛用于所有手术科室：神经外科、胸外科、心血管外科、骨科、肝胆外科、普外科、妇产科、泌尿科、腔镜外科、耳鼻喉及颜面部、烧伤科、整形美容科等。With the development of laparoscopic technology and the improvement of instruments, laparoscopic surgery is increasingly used in clinical applications. Absorbable hemostatic materials under laparoscopy are widely used. As one of the technologies, hemostatic powder is widely used in clinical practice, which can ensure a clear surgical field, reduce postoperative drainage, prevent postoperative adhesion and infection, promote tissue repair and healing, and promote bone. Growth, widely used in all surgical departments: Neurosurgery, Thoracic Surgery, Cardiovascular Surgery, Orthopedics, Hepatobiliary Surgery, General Surgery, Obstetrics and Gynecology, Urology, Laparoscopic Surgery, ENT and Facial, Burns, Plastic and Aesthetics Wait.
在腹腔镜手术中，一般采用喷洒止血粉进行止血。止血粉的特点是直接作用伤口时具有选择性的吸收血液中的水分子，而不吸收血液中其他成分，导致血小板和血凝因子的浓缩；同时吸水后产生的热量增强了血小板的凝聚速度和凝聚能力，从而达到快速止血。In laparoscopic surgery, hemostatic powder is generally used to stop bleeding. The characteristic of hemostatic powder is that it selectively absorbs water molecules in the blood when it directly acts on the wound, but does not absorb other components in the blood, resulting in the concentration of platelets and blood coagulation factors; at the same time, the heat generated after absorbing water enhances the aggregation speed of platelets. Coagulation ability, so as to achieve rapid hemostasis.
现有技术中，止血材料在腹腔镜术中喷洒需要借助一个导管，目前所用导管为塑料软导管，内径约2mm，外径约3mm，在使用过程中，该导管存在易弯折、易堵塞、无法准确直达目标区域等缺点。In the prior art, the spraying of the hemostatic material in laparoscopy requires the use of a catheter, and the catheter currently used is a plastic flexible catheter with an inner diameter of about 2 mm and an outer diameter of about 3 mm. The disadvantage of not being able to reach the target area accurately.
发明内容SUMMARY OF THE INVENTION
本发明的目的是为了克服现有技术存在的腹腔镜术中止血粉喷洒导管易弯折、易堵塞、无法准确直达目标区域等问题，提供一种导管总成，该腹腔镜术中止血粉喷洒用导管总成，具有便于止血粉喷洒导管顺利到达出血部位的优点。The purpose of the present invention is to overcome the problems of the prior art that the hemostatic powder spraying catheter in laparoscopic surgery is easy to bend, easy to block, and cannot reach the target area accurately, and provides a catheter assembly, which is a catheter for hemostatic powder spraying during laparoscopy. The assembly has the advantage of facilitating the hemostatic powder spraying catheter to reach the bleeding site smoothly.
为了实现上述目的，本发明提供一种腹腔镜术中止血粉喷洒用导管总成，包括导管外鞘和导管；所述导管外鞘包括鞘体及其内的导管通道，所述导管通道具有通道入口和通道出口，所述导管贯穿于所述导管通道；所述鞘体的前端部具有弹性插入导向结构，用于将所述导管引导至出血部位，所述通道出口位于所述弹性插入导向结构的前端；所述导管的后端具有导管接口，前端具有导管出口，所述导管接口固定在所述通道入口外侧，所述导管出口固定在所述通道出口外侧。In order to achieve the above purpose, the present invention provides a catheter assembly for hemostatic powder spraying during laparoscopic surgery, comprising a catheter outer sheath and a catheter; the catheter outer sheath includes a sheath body and a catheter channel in it, and the catheter channel has a channel inlet and a channel outlet, the catheter runs through the catheter channel; the front end of the sheath body has an elastic insertion guide structure for guiding the catheter to the bleeding site, and the channel outlet is located at the elastic insertion guide structure. Front end; the rear end of the conduit has a conduit interface, the front end has a conduit outlet, the conduit interface is fixed outside the channel inlet, and the conduit outlet is fixed outside the channel outlet.
优选地，所述鞘体与所述弹性插入导向结构为一体结构；或者，所述鞘体与所述弹性插入导向结构为分体结构，所述弹性插入导向结构安装在所述鞘体的前端；所述导管通道沿所述鞘体和所述弹性插入导向结构的轴向贯穿其内。Preferably, the sheath body and the elastic insertion guide structure are integral structures; alternatively, the sheath body and the elastic insertion guide structure are separate structures, and the elastic insertion guide structure is installed at the front end of the sheath body ; The conduit passage runs through it along the axial direction of the sheath body and the elastic insertion guide structure.
优选地，所述弹性插入导向结构为沿其轴向从邻近所述鞘体的一端至另一端径向截面积逐渐线性缩小的回转体。Preferably, the elastic insertion guide structure is a rotary body whose radial cross-sectional area gradually decreases linearly along its axial direction from one end adjacent to the sheath body to the other end.
优选地，所述导管外鞘的径向截面呈环形或C型。Preferably, the radial cross-section of the outer sheath of the catheter is annular or C-shaped.
优选地，所述弹性插入导向结构与所述鞘体的衔接部位，以及所述弹性插入导向结构的前端面与外周面的衔接部位均设有过渡圆弧部。Preferably, a transition arc portion is provided at the joint portion between the elastic insertion guide structure and the sheath body, and the joint portion between the front end surface and the outer peripheral surface of the elastic insertion guide structure.
优选地，所述弹性插入导向结构上邻近前端面的外周面上形成有用于压迫出血部位周边组织的凸缘。Preferably, a flange for compressing the peripheral tissue of the bleeding site is formed on the outer peripheral surface of the elastic insertion guide structure adjacent to the front end surface.
优选地，所述凸缘与出血部位周边组织的接触面为弧形面。Preferably, the contact surface between the flange and the surrounding tissue of the bleeding site is an arc surface.
优选地，所述弹性插入导向结构的外周面上上设有用于排出液体的导流孔。Preferably, a guide hole for discharging liquid is provided on the outer peripheral surface of the elastic insertion guide structure.
优选地，所述导管的径向截面呈封闭的环形。Preferably, the radial section of the conduit is in the form of a closed ring.
优选地，所述导管接口上设有紧固组件。Preferably, a fastening component is provided on the conduit interface.
通过上述技术方案，由导管外鞘和导管组成了导管总成，克服了现有技术中导管在插入时容易被堵塞和弯折的缺点，可以让止血粉快速高效的到达出血部位，对腹腔镜术中止血起到良好的作用。Through the above technical solution, the catheter assembly is composed of the catheter sheath and the catheter, which overcomes the shortcomings of the prior art that the catheter is easily blocked and bent during insertion, and allows the hemostatic powder to reach the bleeding site quickly and efficiently. Intraoperative hemostasis plays a good role.
附图说明Description of drawings
图1是本发明一个实施例的结构示意图；1 is a schematic structural diagram of an embodiment of the present invention;
图2是本发明另一个实施例的结构示意图；2 is a schematic structural diagram of another embodiment of the present invention;
图3是本发明又一个实施例的结构示意图。FIG. 3 is a schematic structural diagram of another embodiment of the present invention.
附图标记说明Description of reference numerals
1导管外鞘，2导管，3弹性插入导向结构，4过渡圆弧部，5凸缘，6 导流孔，7紧固组件，11鞘体，12导管通道，21导管接口，22导管出口， 121通道入口，122通道出口。1 catheter outer sheath, 2 catheter, 3 elastic insertion guide structure, 4 transition arc portion, 5 flange, 6 guide hole, 7 fastening component, 11 sheath body, 12 catheter channel, 21 catheter interface, 22 catheter outlet, 121 channel inlet, 122 channel outlet.
具体实施方式Detailed ways
在本发明中，在未作相反说明的情况下，使用的方位词如“上、下、左、右、前、后、内、外、远、近”通常是指图示的方位。In the present invention, unless otherwise stated, the orientation words used such as "up, down, left, right, front, rear, inner, outer, far, near" generally refer to the orientation shown in the drawings.
以下结合附图对本发明的具体实施方式进行详细说明，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，本发明的保护范围并不局限于下述的具体实施方式。The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the following specific embodiments. .
实施例1Example 1
如图1所示，一种腹腔镜术中止血粉喷洒用导管总成，其特征在于，包括导管外鞘1和导管2；所述导管外鞘1包括鞘体11及其内的导管通道12，所述导管通道12具有通道入口121和通道出口122，所述导管2贯穿于所述导管通道12；所述鞘体11的前端部具有弹性插入导向结构3，用于将所述导管2引导至出血部位，所述通道出口122位于所述弹性插入导向结构3的前端；所述导管2的后端具有导管接口21，前端具有导管出口22，所述导管接口21固定在所述通道入口121外侧，所述导管出口22固定在所述通道出口122外侧。As shown in Figure 1, a catheter assembly for spraying hemostatic powder during laparoscopic surgery is characterized in that it comprises a catheter outer sheath 1 and a catheter 2; the catheter outer sheath 1 includes a sheath body 11 and a catheter channel 12 in it, The catheter channel 12 has a channel inlet 121 and a channel outlet 122, and the catheter 2 runs through the catheter channel 12; the front end of the sheath body 11 has an elastic insertion guide structure 3 for guiding the catheter 2 to the At the bleeding site, the channel outlet 122 is located at the front end of the elastic insertion guide structure 3; the rear end of the catheter 2 has a catheter interface 21, and the front end has a catheter outlet 22, and the catheter interface 21 is fixed outside the channel inlet 121 , the conduit outlet 22 is fixed outside the channel outlet 122 .
具体的，为了克服现有技术中，止血粉导管过于柔软，以至于在插入过程中容易弯折和阻塞的缺点，将导管2贯穿在导管外鞘1的导管通道12内，并通过但不限于粘结，螺纹连接、焊接和插接等方式，将导管接口21和导管通道的入口121连接。连接的效果可以是封闭连接，使得导管2的外壁和导管通道12的内壁形成一个封闭的空间，以增加该导管总成的结构强度，适用于相应的腹腔镜手术中，也可以是部分连接，使得导管2的外壁和导管通道12的内壁形成一个开放的空间，减轻该导管总成的重量，为进一步的适用留下改进的空间。Specifically, in order to overcome the shortcomings of the prior art that the hemostatic powder catheter is too soft, so that it is easy to bend and block during the insertion process, the catheter 2 is inserted into the catheter channel 12 of the catheter sheath 1, and is passed through but not limited to The conduit interface 21 is connected with the inlet 121 of the conduit channel by means of bonding, screw connection, welding and plugging. The effect of the connection can be a closed connection, so that the outer wall of the catheter 2 and the inner wall of the catheter channel 12 form a closed space, so as to increase the structural strength of the catheter assembly, which is suitable for the corresponding laparoscopic operation, and can also be a partial connection, The outer wall of the conduit 2 and the inner wall of the conduit passage 12 form an open space, which reduces the weight of the conduit assembly and leaves room for improvement for further application.
需要说明的是，该导管总成中，导管2和导管外鞘1的长度没有限制，它们之间的长度比例也没有限制，而且，该导管总成中，通道入口121可以突出于导管接口21，也可以内缩于导管接口21，同样的，通道出口122可以突出于导管出口22，也可以内缩于导管出口22。导管2的外径小于导管通道12的内径，但具体比例不做限制。It should be noted that, in the catheter assembly, the lengths of the catheter 2 and the catheter sheath 1 are not limited, and the length ratio between them is also not limited. Moreover, in the catheter assembly, the channel inlet 121 can protrude from the catheter interface 21. , can also be retracted in the conduit interface 21 , and similarly, the channel outlet 122 can protrude from the conduit outlet 22 , and can also be retracted inwardly at the conduit outlet 22 . The outer diameter of the catheter 2 is smaller than the inner diameter of the catheter channel 12, but the specific ratio is not limited.
具体的，为适用于不同的手术环境，所述鞘体11与所述弹性插入导向结构3为一体结构；或者，所述鞘体11与所述弹性插入导向结构3为分体结构，所述弹性插入导向结构3安装在所述鞘体11的前端；所述导管通道 12沿所述鞘体11和所述弹性插入导向结构3的轴向贯穿其内。在分体结构的情况下，弹性插入导向结构3通过但不限于粘接、螺纹、卡扣和焊接的方式与鞘体11的一端连接，从而形成了前后方向上贯通所述鞘体11和所述弹性插入导向结构3的导管通道12。Specifically, in order to be suitable for different surgical environments, the sheath body 11 and the elastic insertion guide structure 3 are integral structures; alternatively, the sheath body 11 and the elastic insertion guide structure 3 are separate structures, and the The elastic insertion guide structure 3 is installed at the front end of the sheath body 11 ; the catheter channel 12 runs through the sheath body 11 and the elastic insertion guide structure 3 along the axial direction thereof. In the case of the split structure, the elastic insertion guide structure 3 is connected to one end of the sheath body 11 by, but not limited to, bonding, threading, snapping and welding, thereby forming a front-to-rear direction through the sheath body 11 and all Said elastically inserted into the catheter channel 12 of the guide structure 3 .
具体的，所述导管通道12沿前后方向贯通所述导管外鞘，其中所述通道入口121位于所述鞘体11的后端面，所述鞘体11和所述弹性插入导向结构3均为中空结构，所述导管通道12包括位于所述鞘体11内的主通道和位于所述弹性插入导向结构3内的导向部通道。需要说明的是，所述通道入口 121可以根据具体的使用情况，设置在鞘体11的其他部位，方便从不同角度和方位插入止血粉导管。Specifically, the catheter channel 12 passes through the catheter outer sheath in the front-rear direction, wherein the channel inlet 121 is located at the rear end surface of the sheath body 11 , and the sheath body 11 and the elastic insertion guide structure 3 are both hollow Structure, the catheter channel 12 includes a main channel located in the sheath body 11 and a guide channel located in the elastic insertion guide structure 3 . It should be noted that the channel inlet 121 can be arranged in other parts of the sheath body 11 according to the specific use conditions, so as to facilitate the insertion of the hemostatic powder catheter from different angles and orientations.
具体的，所述弹性插入导向结构3为沿其轴向从邻近所述鞘体11的一端至另一端径向截面积逐渐线性缩小的回转体。该回转体包括但不限于圆锥体、球体、半球体和其他多面体。需要说明的是，所述弹性插入导向结构3 用于引导导管外鞘通过组织器官的间隙，顺利抵达出血部位，并在穿插的过程中，减小外鞘前端面对组织器官的压力，避免因导管外鞘的插入过程不当，而引起组织器官的损伤。Specifically, the elastic insertion guide structure 3 is a rotary body whose radial cross-sectional area gradually decreases linearly along its axial direction from one end adjacent to the sheath body 11 to the other end. The bodies of revolution include, but are not limited to, cones, spheres, hemispheres and other polyhedrons. It should be noted that the elastic insertion guide structure 3 is used to guide the outer sheath of the catheter through the gap between tissues and organs to reach the bleeding site smoothly. Improper insertion of the catheter sheath may cause damage to tissues and organs.
具体的，所述导管外鞘1的径向截面呈环形或C型。需要说明的是，所述环形包括但不限于圆环和其他多边形环。由于止血粉导管在腹腔镜术中无法被直接观察到，其在手术过程中的实时状态需要借助腹腔镜的摄像头进行跟踪拍摄，C型结构所特有的缺口，给腹腔镜的摄像头留下了充足的观察视角，可以满足腹腔镜操作者，在手术过程中对外鞘内导管的具体情况进行实时的检查分析，并采取相应的措施。Specifically, the radial section of the catheter outer sheath 1 is annular or C-shaped. It should be noted that the ring includes, but is not limited to, a circular ring and other polygonal rings. Since the hemostatic powder catheter cannot be directly observed during laparoscopic surgery, its real-time state during the operation needs to be tracked and photographed by the laparoscopic camera. The unique gap of the C-shaped structure leaves sufficient space for the laparoscopic camera. The observation angle of view can meet the needs of laparoscopic operators to conduct real-time inspection and analysis of the specific situation of the intrathecal catheter during the operation, and take corresponding measures.
具体的，所述弹性插入导向结构3与所述鞘体11的衔接部位，以及所述弹性插入导向结构3的前端面与外周面的衔接部位均设有过渡圆弧部4。利用过渡圆弧部3的结构特点，减少外鞘插入过程中对组织器官的损伤，并引导外鞘到达出血部位。Specifically, a transition arc portion 4 is provided at the connection portion between the elastic insertion guide structure 3 and the sheath body 11 , and the connection portion between the front end surface and the outer peripheral surface of the elastic insertion guide structure 3 . By utilizing the structural features of the transition arc portion 3, the damage to tissues and organs during the insertion of the outer sheath is reduced, and the outer sheath is guided to reach the bleeding site.
具体的，所述导管2的径向截面呈封闭的环形。需要说明的是，所述环形包括但不限于圆环和其他多边形环。该环形为封闭结构，以保障在手术的过程中，适量的止血粉能够通过个导管2快速的到达止血部位。Specifically, the radial section of the conduit 2 is a closed annular shape. It should be noted that the ring includes, but is not limited to, a circular ring and other polygonal rings. The ring is a closed structure to ensure that an appropriate amount of hemostatic powder can quickly reach the hemostatic site through the catheter 2 during the operation.
实施例2Example 2
如图2所示，在实施例1的基础上，在所述弹性插入导向结构3的邻近前端面的外周面还形成有用于压迫出血部位周边组织的凸缘5。因为腹腔镜手术的复杂性和组织器官的不同构造，在手术中，出血量的大小，血液的流速和血压也是不可控的因素，当出血点的出血量大、血液流速快、血压高的时候，需要利用凸缘5对出血部位附近的组织进行压迫止血，以使得止血粉不被血流冲散，达到快速止血的目的。As shown in FIG. 2 , on the basis of Embodiment 1, a flange 5 for compressing the peripheral tissue of the bleeding site is also formed on the outer peripheral surface of the elastic insertion guide structure 3 adjacent to the front end surface. Because of the complexity of laparoscopic surgery and the different structures of tissues and organs, the amount of bleeding, blood flow rate and blood pressure are also uncontrollable factors during the operation. , it is necessary to use the flange 5 to compress the tissue near the bleeding site to stop bleeding, so that the hemostatic powder is not scattered by the blood flow, and the purpose of rapid hemostasis is achieved.
具体的，所述凸缘5与出血部位周边组织的接触面为弧形面。利用弧面的结构特性，减少凸缘5对组织器官的不当损伤，并引导外鞘顺利抵达出血点。Specifically, the contact surface between the flange 5 and the surrounding tissue of the bleeding site is an arc surface. Utilizing the structural characteristics of the arc surface, the improper damage to the tissues and organs by the flange 5 is reduced, and the outer sheath is guided to reach the bleeding point smoothly.
实施例3Example 3
如图3所示，在实施例2的基础上，在所述弹性插入导向结构3上设置有用于液体排出的导流孔6。当手术中，出血点无法采取压迫止血或者压迫止血也不能让止血粉充分发挥作用的时候，让血液经导流孔6进行分流，从而减少血液对止血粉的冲击，有利于止血粉的快速止血。As shown in FIG. 3 , on the basis of Embodiment 2, a guide hole 6 for liquid discharge is provided on the elastic insertion guide structure 3 . During the operation, when the bleeding point cannot be controlled by compression or the hemostasis powder cannot fully exert its effect, the blood is diverted through the diversion hole 6, thereby reducing the impact of the blood on the hemostasis powder, which is conducive to the rapid hemostasis of the hemostasis powder. .
实施例4Example 4
如图1-图3所示，所述导管接口21上设有紧固组件7。在使用过程中，导管总成需要连接到外部的止血粉供给管线上，通过导管接口21与止血粉供给管线的出口相连接。连接方式包括但不限于插接、螺纹连接、粘接和卡扣连接等，通过紧固组件7的作用，使得导管接口21与止血粉供给管线的出口连接更加紧密，保障手术过程中的安全。紧固组件7包括但不限于卡扣、螺母、粘结条和插接扣等。As shown in FIGS. 1-3 , the conduit interface 21 is provided with a fastening component 7 . During use, the catheter assembly needs to be connected to the external hemostatic powder supply line, and is connected to the outlet of the hemostatic powder supply line through the catheter interface 21 . The connection methods include but are not limited to plug-in, threaded connection, bonding and snap connection, etc. Through the action of the fastening component 7, the catheter interface 21 and the outlet of the hemostatic powder supply pipeline are connected more closely, ensuring the safety during the operation. The fastening components 7 include, but are not limited to, snaps, nuts, adhesive strips, and plug-in buckles.
以上图1-图3详细描述了本发明的优选实施方式，但是，本发明并不限于此。在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型，包括各个具体技术特征以任何合适的方式进行组合。为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。但这些简单变型和组合同样应当视为本发明所公开的内容，均属于本发明的保护范围。The preferred embodiments of the present invention are described in detail in FIGS. 1 to 3 above, but the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed in the present invention, and all belong to the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810420812.XACN108543195B (en) | 2018-05-04 | 2018-05-04 | Catheter assembly for hemostatic powder spraying during laparoscopic surgery |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810420812.XACN108543195B (en) | 2018-05-04 | 2018-05-04 | Catheter assembly for hemostatic powder spraying during laparoscopic surgery |
| Publication Number | Publication Date |
|---|---|
| CN108543195A CN108543195A (en) | 2018-09-18 |
| CN108543195Btrue CN108543195B (en) | 2019-04-30 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810420812.XAActiveCN108543195B (en) | 2018-05-04 | 2018-05-04 | Catheter assembly for hemostatic powder spraying during laparoscopic surgery |
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