技术领域Technical Field
本实用新型涉及医疗器械技术领域，特别涉及一种用于输送装置的密封组件。The utility model relates to the technical field of medical equipment, in particular to a sealing component for a conveying device.
背景技术Background Art
介入治疗是介于外科、内科治疗之间的新兴治疗方法，是一种利用现代高科技手段进行的微创疗法。介入治疗可以在影像医学的引导下，经由体表切开的微小通道(直径几毫米)、或人体原有的器官、血管腔道，利用导管将影像设备、植入物或致动器输送至目标部位，以进行诊断造影、治疗或人体组织采集。由于介入治疗具有适用范围大、创伤小、简便安全、效果好、并发症少等优点，具有广阔的发展前景。Interventional therapy is an emerging treatment method between surgical and internal medicine treatments. It is a minimally invasive therapy using modern high-tech means. Under the guidance of medical imaging, interventional therapy can use catheters to deliver imaging equipment, implants or actuators to the target site through tiny channels (a few millimeters in diameter) cut on the body surface, or existing organs and blood vessels in the human body, for diagnostic imaging, treatment or human tissue collection. Interventional therapy has broad development prospects due to its wide range of applications, low trauma, simplicity and safety, good results, and few complications.
对于介入治疗，通常需要用输送装置将植入物(例如支架假体)、致动器(例如电刀、剪刀)送到目标的位置进行治疗。一般而言，输送装置包括导管组件，导管组件包括鞘管和可移动地容纳于鞘管内的内管，将植入物、致动器输送到目标位置后，鞘管和内管之间相对位移以释放植入物、致动器。For interventional treatment, a delivery device is usually required to deliver implants (such as stent prostheses) and actuators (such as electric knives and scissors) to the target location for treatment. Generally speaking, the delivery device includes a catheter assembly, which includes a sheath and an inner tube movably accommodated in the sheath. After the implant and actuator are delivered to the target location, the sheath and the inner tube are relatively displaced to release the implant and the actuator.
在此过程中，输送装置一方面需要具有位置锁定功能，以在向目标位置前进时锁定鞘管与内管之间的相对位置、并在到达目标位置时解除锁定而允许鞘管与内管相对运动，实现相关功能；另一方面也需要具有密封功能，以阻止在输送乃至植入过程中，血液经由鞘管和内管之间的缝隙流出。目前的输送装置来说，位置锁定和密封需要两套组件来实现，这导致了输送装置的结构复杂和臃肿，而且操作不便而影响操作效率和安全。In this process, the delivery device needs to have a position locking function on the one hand, so as to lock the relative position between the sheath and the inner tube when advancing to the target position, and unlock when reaching the target position to allow the sheath and the inner tube to move relative to each other, so as to realize related functions; on the other hand, it also needs to have a sealing function to prevent blood from flowing out through the gap between the sheath and the inner tube during delivery or even implantation. For current delivery devices, position locking and sealing require two sets of components to achieve, which makes the delivery device complex and bulky, and inconvenient to operate, affecting the operating efficiency and safety.
因此，如何设计一种新的密封组件成为重要的研究课题。Therefore, how to design a new sealing component becomes an important research topic.
实用新型内容Utility Model Content
本实用新型实施方式的目的在于提供一种用于输送装置的密封组件，能够兼具密封、锁定功能，且结构简单，易于操作。The purpose of the embodiment of the utility model is to provide a sealing assembly for a conveying device, which can have both sealing and locking functions, and has a simple structure and is easy to operate.
为解决上述技术问题中的一个或多个，本实用新型的实施方式提供了一种用于输送装置的密封组件，输送装置包括鞘管和可移动地容纳于所述鞘管的内管，所述密封组件包括：止血阀，包括壳体，设置于所述壳体上的第一卡接部和设置于所述壳体内的阀体通道，所述阀体通道用于供所述内管通过，且所述阀体通道的远端用于与所述鞘管的近端密封固定；弹性密封圈，设置在所述阀体通道内，具有的内孔供所述内管通过，并分别与所述阀体通道的内壁、所述内管的外表面过盈配合；锁紧接头，包括第二卡接部和抵接部，所述抵接部用于轴向挤压所述弹性密封圈，使所述弹性密封圈形变，所述第二卡接部用于与所述第一卡接部卡接，以使所述抵接部持续对所述弹性密封圈轴向挤压，进而使所述内管和所述止血阀均与形变后的所述弹性密封圈保持轴向相对静止。To solve one or more of the above-mentioned technical problems, an embodiment of the utility model provides a sealing assembly for a conveying device, the conveying device includes a sheath tube and an inner tube movably accommodated in the sheath tube, the sealing assembly includes: a hemostatic valve, including a shell, a first clamping portion arranged on the shell and a valve body channel arranged in the shell, the valve body channel is used for the inner tube to pass through, and the distal end of the valve body channel is used to seal and fix with the proximal end of the sheath tube; an elastic sealing ring, arranged in the valve body channel, having an inner hole for the inner tube to pass through, and respectively interference fit with the inner wall of the valve body channel and the outer surface of the inner tube; a locking joint, including a second clamping portion and an abutting portion, the abutting portion is used to axially squeeze the elastic sealing ring to deform the elastic sealing ring, the second clamping portion is used to clamp with the first clamping portion, so that the abutting portion continues to axially squeeze the elastic sealing ring, thereby keeping the inner tube and the hemostatic valve relatively stationary with the deformed elastic sealing ring.
相比于现有技术而言，本申请实施例提供的密封组件，其弹性密封圈一方面以过盈配合的方式与止血阀的阀体通道的内壁配合、另一方面以过盈配合的方式套设在内管外表面，从而能够密封内管和阀体通道之间的缝隙，再结合鞘管的近端与阀体通道密封连接，使流入鞘管和内管的缝隙之间的血液无法外漏，起到密封作用；并且，当锁紧接头的第二卡接部与止血阀的第一卡接部卡接时，抵接部能够轴向挤压弹性密封圈并使弹性密封圈产生径向扩张，弹性密封圈径向扩张带来的摩擦力增加能够阻止内管在轴向方向上在阀体通道内移动，而阀体通道与鞘管又是固定连接关系，进而实现内管与鞘管之间的锁定。如此，通过密封组件同时实现了密封功能和位置锁定功能，而不需要分别配备上述功能的两套组件，因而密封组件能够兼具密封、锁定功能，具有结构简单、易于操作的优点。进一步，在需要将内管和鞘管相对移动时，解除锁紧接头的第二卡接部与所述止血阀的第一卡接部之间的卡接关系，抵接部失去外力后，弹性密封圈恢复形状，径向收缩，进而与内管、阀体通道之间的摩擦力变小，阀体通道中的内管在轴向方向上可相对于阀体通道移动，从而解除锁定，允许鞘管和内管之间的相对移动。Compared with the prior art, the sealing assembly provided in the embodiment of the present application has an elastic sealing ring which, on the one hand, cooperates with the inner wall of the valve body channel of the hemostatic valve in an interference fit manner, and on the other hand, is sleeved on the outer surface of the inner tube in an interference fit manner, so as to seal the gap between the inner tube and the valve body channel, and then the proximal end of the sheath tube is sealed and connected with the valve body channel, so that the blood flowing into the gap between the sheath tube and the inner tube cannot leak out, thereby playing a sealing role; and when the second clamping part of the locking joint is clamped with the first clamping part of the hemostatic valve, the abutting part can axially squeeze the elastic sealing ring and cause the elastic sealing ring to expand radially, and the increase in friction caused by the radial expansion of the elastic sealing ring can prevent the inner tube from moving in the valve body channel in the axial direction, and the valve body channel and the sheath tube are in a fixed connection relationship, thereby realizing the locking between the inner tube and the sheath tube. In this way, the sealing function and the position locking function are simultaneously realized by the sealing assembly, without the need to equip two sets of assemblies with the above functions respectively, so the sealing assembly can have both sealing and locking functions, and has the advantages of simple structure and easy operation. Furthermore, when the inner tube and the sheath tube need to be moved relative to each other, the clamping relationship between the second clamping part of the locking joint and the first clamping part of the hemostatic valve is released. After the abutting part loses external force, the elastic sealing ring restores its shape and contracts radially, thereby reducing the friction between the inner tube and the valve body channel. The inner tube in the valve body channel can move relative to the valve body channel in the axial direction, thereby releasing the lock and allowing relative movement between the sheath tube and the inner tube.
另外，所述抵接部包括位于近端的收纳段以及位于远端的容纳段，当所述第一卡接部和所述第二卡接部卡接时，所述收纳段抵接于所述阀体通道的近端外侧；所述容纳段可移动地容纳于所述阀体通道的近端，并用于轴向挤压所述弹性密封圈，使所述弹性密封圈形变。该种设置能够在容纳段伸入阀体通道、挤压弹性密封圈时，利用收纳段保持在阀体通道的近端外侧，限制容纳段伸入阀体通道的长度，避免容纳段进入阀体通道过深。In addition, the abutting portion includes a receiving section located at the proximal end and a containing section located at the distal end. When the first clamping portion and the second clamping portion are clamped, the receiving section abuts against the proximal outer side of the valve body channel; the containing section is movably contained in the proximal end of the valve body channel and is used to axially squeeze the elastic sealing ring to deform the elastic sealing ring. This arrangement can use the receiving section to remain at the proximal outer side of the valve body channel when the containing section extends into the valve body channel and squeezes the elastic sealing ring, thereby limiting the length of the containing section extending into the valve body channel and preventing the containing section from entering the valve body channel too deeply.
另外，所述第二卡接部包括支撑臂、自所述支撑臂朝近端延伸的按压臂、以及位于所述支撑臂远端的卡块，所述按压臂被外力按压向下移动时带动所述卡块向上移动，以实现和解除所述第一卡接部与所述第二卡接部的卡接。如此设置，第二卡接部构成以支撑臂为支点的跷跷板结构，通过外力对按压臂的释放和按压，能够实现卡块对壳体上第一卡接部的卡持与解除卡持，进而达成对容纳段在阀体通道内的位置锁止和释放。In addition, the second clamping part includes a support arm, a pressing arm extending from the support arm toward the proximal end, and a clamping block located at the distal end of the support arm. When the pressing arm is pressed downward by an external force, the clamping block is driven to move upward to realize and release the clamping of the first clamping part and the second clamping part. In this way, the second clamping part constitutes a seesaw structure with the support arm as a fulcrum. By releasing and pressing the pressing arm by an external force, the clamping block can realize the clamping and release of the first clamping part on the shell, thereby achieving the locking and release of the position of the accommodating section in the valve body channel.
另外，所述支撑臂的纵切面呈L形，所述支撑臂与所述收纳段的近端外边缘相连，所述按压臂从所述支撑臂的近端水平延伸设置，所述卡块自所述支撑臂的远端向内侧延伸。In addition, the longitudinal section of the support arm is L-shaped, the support arm is connected to the proximal outer edge of the storage section, the pressing arm extends horizontally from the proximal end of the support arm, and the blocking block extends inward from the distal end of the support arm.
另外，所述L形的支撑臂具有拐点，所述支撑臂在拐点处与所述收纳段的近端外边缘连接。如此，结构更加紧凑，而且所述支撑臂轴向部分不易发生掰弯。In addition, the L-shaped support arm has an inflection point, and the support arm is connected to the proximal outer edge of the storage section at the inflection point. In this way, the structure is more compact, and the axial part of the support arm is not easy to bend.
另外，所述第一卡接部为锁止槽，用于容纳所述卡块，以实现所述第一卡接部与所述第二卡接部之间卡接。In addition, the first clamping portion is a locking groove, which is used to accommodate the clamping block to achieve clamping between the first clamping portion and the second clamping portion.
另外，所述壳体上还设置有位于所述锁止槽近端的收纳槽，所述收纳槽用于容纳所述卡块，以阻止所述锁紧接头相对于所述止血阀轴向移动。如此，在需要鞘管和内管之间可相对轴向移动时防止锁紧接头被误操作将鞘管和内管锁定，提高密封组件的可靠性。In addition, the housing is also provided with a receiving groove located at the proximal end of the locking groove, and the receiving groove is used to accommodate the block to prevent the locking joint from axially moving relative to the hemostatic valve. In this way, when the sheath tube and the inner tube need to be relatively axially movable, the locking joint is prevented from being locked by mistake, thereby improving the reliability of the sealing assembly.
另外，所述收纳槽与所述锁止槽之间的轴向距离小于所述锁止槽与所述弹性密封圈之间的轴向距离。如此，在内管轴向移动而带动弹性密封圈轴向移动时，弹性密封圈不会过于向近端移动，以避免血液从锁止槽中流出。In addition, the axial distance between the receiving groove and the locking groove is smaller than the axial distance between the locking groove and the elastic sealing ring. In this way, when the inner tube moves axially and drives the elastic sealing ring to move axially, the elastic sealing ring will not move too proximally to prevent blood from flowing out of the locking groove.
另外，所述锁紧接头还包括设置于所述抵接部外围的外壳部，所述外壳部在周向上与所述第二卡接部相邻。In addition, the locking joint further comprises a shell portion disposed at the periphery of the abutting portion, and the shell portion is adjacent to the second clamping portion in the circumferential direction.
另外，所述外壳部包括延伸壁、自所述延伸壁朝近端延伸的握持壁，所述延伸壁设置于所述抵接部外围，且与所述收纳段连接，用于保护所述抵接部，所述握持壁用于供操作者握持。由于锁紧接头的容纳段伸入阀体通道、而仅仅剩下收纳段保持在阀体通道的近端外侧，通过该外壳部的结构可以增大供操作者握持的面积，方便握持外壳部来操作抵接部的轴向移动和转动，其中，握持壁能够供操作者接触、便于握持，延伸壁能够在容纳段向近端轴向移动时、遮蔽从阀体通道内移出的容纳段表面而保护所述抵接部。In addition, the shell portion includes an extension wall and a gripping wall extending from the extension wall toward the proximal end. The extension wall is arranged at the periphery of the abutment portion and connected to the receiving section to protect the abutment portion. The gripping wall is used for the operator to grip. Since the receiving section of the locking joint extends into the valve body channel, and only the receiving section is left outside the proximal end of the valve body channel, the structure of the shell portion can increase the area for the operator to grip, making it convenient to grip the shell portion to operate the axial movement and rotation of the abutment portion, wherein the gripping wall can be contacted by the operator and is convenient for gripping, and the extension wall can shield the surface of the receiving section that moves out of the valve body channel when the receiving section moves axially toward the proximal end to protect the abutment portion.
另外，所述延伸壁的纵切面呈L形，横截面呈扇形；所述握持壁的纵切面呈线形，横截面呈扇形。In addition, the longitudinal section of the extension wall is L-shaped, and the cross section is fan-shaped; the longitudinal section of the holding wall is linear, and the cross section is fan-shaped.
另外，所述延伸壁的远端内表面上设置有第一阻止部，所述壳体上设置有第二阻止部，所述第二阻止部位于所述收纳槽的近端一侧，所述第一阻止部与第二阻止部被配置为所述锁紧接头相对于所述止血阀朝近端移动过程中，所述第二阻止部与所述第一阻止部抵接以阻止所述锁紧接头自所述止血阀脱落。In addition, a first blocking portion is provided on the inner surface of the distal end of the extension wall, and a second blocking portion is provided on the shell, the second blocking portion is located on the proximal side of the storage groove, and the first blocking portion and the second blocking portion are configured so that when the locking connector moves toward the proximal end relative to the hemostatic valve, the second blocking portion abuts against the first blocking portion to prevent the locking connector from falling off the hemostatic valve.
另外，所述第一阻止部的内径小于所述第二阻止部外径；在所述第一阻止部的远端以及所述第二阻止部的近端分别设有倒角；在第一阻止部的近端以及所述第二阻止部的远端分别设有抵接面。In addition, the inner diameter of the first blocking portion is smaller than the outer diameter of the second blocking portion; chamfers are provided at the distal end of the first blocking portion and the proximal end of the second blocking portion; and abutment surfaces are provided at the proximal end of the first blocking portion and the distal end of the second blocking portion.
另外，所述外壳部和所述第二卡接部均为多个，多个所述外壳部与多个所述第二卡接部环绕轴向交替间隔设置。该种结构设置，抵接部以及止血阀受力均匀，而且符合人手操作习惯。In addition, the outer shell and the second clamping part are both multiple, and the multiple outer shells and the multiple second clamping parts are alternately arranged around the axial direction. With this structural arrangement, the abutting part and the hemostatic valve are evenly stressed and conform to the manual operation habits.
另外，还包括设置在所述阀体通道内、并位于所述弹性密封圈的近端侧的垫片，所述垫片的刚度大于所述弹性密封圈的刚度，所述容纳段经由所述垫片挤压所述弹性密封圈。通过刚性较大的垫片能够更加均匀的将容纳段产生的挤压力传递至弹性密封圈，使弹性密封圈产生更加均匀的形变而在弹性密封圈接触的各个位置更加均匀增加摩擦力，增大整个密封组件的可靠性。In addition, it also includes a gasket disposed in the valve body channel and located on the proximal side of the elastic sealing ring, the rigidity of the gasket is greater than the rigidity of the elastic sealing ring, and the accommodating section squeezes the elastic sealing ring through the gasket. The gasket with greater rigidity can more evenly transmit the squeezing force generated by the accommodating section to the elastic sealing ring, so that the elastic sealing ring produces more uniform deformation and the friction force is more evenly increased at each position where the elastic sealing ring contacts, thereby increasing the reliability of the entire sealing assembly.
另外，所述阀体通道近端的直径大于所述阀体通道中间部分的直径，以在两者的连接处形成第二抵接肩部，所述弹性密封圈位于所述第二抵接肩部的近端，所述第二抵接肩部用于阻止所述弹性密封圈在受到轴向挤压力时向远端移动。In addition, the diameter of the proximal end of the valve body channel is larger than the diameter of the middle part of the valve body channel to form a second abutment shoulder at the connection between the two. The elastic sealing ring is located at the proximal end of the second abutment shoulder, and the second abutment shoulder is used to prevent the elastic sealing ring from moving distally when subjected to axial extrusion force.
另外，所述止血阀还设有对应所述阀体通道中部部位、并位于所述壳体外侧的分支管，所述分支管与软管密封固定连接，所述软管用于连接注射器，以便于注射器将生理盐水注入所述鞘管和所述内管之间的缝隙内，进而排出该缝隙内的空气，所述分支管具有沿其轴向延伸的连接通道，所述连接通道的一端与所述阀体通道连通，另一端与所述软管的内腔连通。In addition, the hemostatic valve is also provided with a branch tube corresponding to the middle part of the valve body channel and located on the outside of the shell. The branch tube is sealed and fixedly connected to the hose. The hose is used to connect a syringe so that the syringe can inject physiological saline into the gap between the sheath tube and the inner tube, and then discharge the air in the gap. The branch tube has a connecting channel extending along its axial direction, one end of the connecting channel is connected to the valve body channel, and the other end is connected to the inner cavity of the hose.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.
图1是根据本实用新型实施例提供的密封组件、内管和鞘管的立体组装结构示意图；FIG1 is a schematic diagram of a three-dimensional assembly structure of a sealing assembly, an inner tube and a sheath tube according to an embodiment of the present utility model;
图2是图1所示的密封组件、内管和鞘管的剖面结构示意图；FIG2 is a schematic cross-sectional view of the sealing assembly, inner tube and sheath tube shown in FIG1 ;
图3是根据本实用新型实施例提供的锁紧接头的立体结构示意图；FIG3 is a schematic diagram of the three-dimensional structure of a locking joint provided according to an embodiment of the utility model;
图4是图3所示锁紧接头沿竖直方向的剖面结构示意图；FIG4 is a schematic diagram of the cross-sectional structure of the locking joint shown in FIG3 along the vertical direction;
图5是图3所示锁紧接头沿水平方向的剖面结构示意图；FIG5 is a schematic diagram of the cross-sectional structure of the locking joint shown in FIG3 along the horizontal direction;
图6是根据本实用新型实施例提供的止血阀的立体结构示意图；FIG6 is a schematic diagram of the three-dimensional structure of a hemostatic valve provided according to an embodiment of the utility model;
图7是根据本实用新型实施例提供的止血阀的剖面图；FIG7 is a cross-sectional view of a hemostatic valve provided according to an embodiment of the utility model;
图8是根据本实用新型实施例提供的设有分支管的密封组件与软管以及冲洗阀的配合示意图。FIG8 is a schematic diagram of the cooperation between a sealing assembly with a branch pipe, a hose and a flushing valve provided according to an embodiment of the utility model.
附图标记：Reference numerals:
10密封组件10 Sealing components
11止血阀11Hemostatic valve
110壳体110 Shell
1100第一卡接部1100 first clamping portion
1101第二阻止部1101 Second blocking unit
1102收纳槽1102 Storage Slot
1103阀体通道1103 valve body channel
1104远端通道1104 Remote Channel
1105中间通道1105 Middle Channel
1106近端通道1106 Near-end channel
1107第二抵接肩部1107 second abutment shoulder
1108第一抵接肩部1108 first abutment shoulder
12弹性密封圈12 Elastic sealing ring
13锁紧接头13 Locking connector
130抵接部130 contact portion
131收纳段131 Storage Section
132容纳段132 Accommodation Section
133锁紧接头通道133 Locking connector channel
14第二卡接部14 second clamping portion
141支撑臂141 Support arm
142按压臂142 Pressing Arm
1420按压凸起1420 Press the bulge
143卡块143 card blocks
1431第三阻止部1431 The Third Blocking Department
15外壳部15 Shell
151延伸壁151 Extension Wall
152握持壁152 Holding Wall
1520防滑凸起1520 anti-slip bumps
153第一阻止部153 First Blocking Section
16垫片16 Spacers
17分支管17 branch pipe
18软管18 Hose
19冲洗阀19 Flush valve
20鞘管20 Sheath
30内管30 inner tube
具体实施方式DETAILED DESCRIPTION
为使本实用新型实施例的目的、技术方案和优点更加清楚，下面将结合附图对本实用新型的各实施方式进行详细的阐述。然而，本领域的普通技术人员可以理解，在本实用新型各实施方式中，为了使读者更好地理解本申请而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施方式的种种变化和修改，也可以实现本申请所要求保护的技术方案。In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, each embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. However, it can be understood by those skilled in the art that in each embodiment of the utility model, many technical details are proposed in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented.
在本实用新型实施方式中，术语“上”、“下”、“左”、“右”、“前”、“后”、“顶”、“底”、“内”、“外”、“中”、“竖直”、“水平”、“横向”、“纵向”等指示方位或位置关系为基于附图所示的方位或位置关系。这些术语主要是为了更好地描述本实用新型及其实施方式，并非用于限定所指示的装置、元件或组成部分必须具有特定方位，或以特定方位进行构造和操作。In the embodiments of the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
并且，上述部分术语除了可以用于表示方位或位置关系以外，还可能用于表示其他含义，例如术语“上”在某些情况下也可能用于表示某种依附关系或连接关系。对于本领域普通技术人员而言，可以根据具体情况理解这些术语在本实用新型中的具体含义。In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.
此外，术语“安装”、“设置”、“设有”、“开设”、“连接”、“相连”应做广义理解。例如，可以是固定连接，可拆卸连接，或整体式构造；可以是机械连接，或电连接；可以是直接相连，或者是通过中间媒介间接相连，又或者是两个装置、元件或组成部分之间内部的连通。对于本领域普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。In addition, the terms "installed", "set", "provided with", "opened", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
此外，术语“第一”、“第二”等主要是用于区分不同的装置、元件或组成部分(具体的种类和构造可能相同也可能不同)，并非用于表明或暗示所指示装置、元件或组成部分的相对重要性和数量。除非另有说明，“多个”的含义为两个或两个以上。In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.
在本实用新型中，“近端”、“近侧”是指输送装置的各组件、部件、零件上靠近操作者、远离患者的一端，“远端”、“远侧”是指输送装置的各组件、部件、零件上远离操作者、靠近患者的一端。“轴向”是指从远端至近端的方向或者从近端至远端的方向，即轴向非单向。“周向”是指以沿轴向延伸的直线为轴线的转动方向，同样，周向非单向。In the present invention, "proximal end" and "proximal side" refer to the end of each component, part, or part of the delivery device that is close to the operator and away from the patient, and "distal end" and "distal side" refer to the end of each component, part, or part of the delivery device that is away from the operator and close to the patient. "Axial" refers to the direction from the distal end to the proximal end or from the proximal end to the distal end, that is, the axial direction is not unidirectional. "Circumferential" refers to the direction of rotation with a straight line extending along the axial direction as the axis, and similarly, the circumferential direction is not unidirectional.
参见图1及图2，本实用新型实施例提供一种用于输送装置的密封组件10，输送装置包括鞘管20和可移动容纳于鞘管20的内管30。所述密封组件10包括：止血阀11，包括壳体110，设置于所述壳体110上的第一卡接部1100和设置于所述壳体110内的阀体通道1103，所述阀体通道1103用于供所述内管30通过，且所述阀体通道1103的远端用于与所述鞘管20的近端密封固定；弹性密封圈12，设置在所述阀体通道1103内，具有的内孔供所述内管30通过，并分别与所述阀体通道1103的内壁、所述内管30的外表面过盈配合；锁紧接头13，包括第二卡接部14和抵接部130，所述抵接部130用于容纳在所述阀体通道1103，并轴向挤压所述弹性密封圈12，使所述弹性密封圈12形变，所述第二卡接部14用于与所述第一卡接部1100卡接，以使所述抵接部130持续对所述弹性密封圈12轴向挤压，进而使所述内管30和所述止血阀11均与形变后的所述弹性密封圈12保持轴向相对静止。Referring to Fig. 1 and Fig. 2, an embodiment of the utility model provides a sealing assembly 10 for a delivery device, the delivery device comprising a sheath tube 20 and an inner tube 30 movably accommodated in the sheath tube 20. The sealing assembly 10 comprises: a hemostatic valve 11, comprising a housing 110, a first clamping portion 1100 disposed on the housing 110, and a valve body channel 1103 disposed in the housing 110, the valve body channel 1103 being used for allowing the inner tube 30 to pass through, and the distal end of the valve body channel 1103 being used for sealing and fixing with the proximal end of the sheath tube 20; an elastic sealing ring 12, disposed in the valve body channel 1103, having an inner hole for allowing the inner tube 30 to pass through, and respectively engaging with the inner wall of the valve body channel 1103 and the inner tube 30. The outer surface of 30 has an interference fit; the locking joint 13 includes a second clamping portion 14 and an abutting portion 130, the abutting portion 130 is used to be accommodated in the valve body channel 1103, and axially squeeze the elastic sealing ring 12 to deform the elastic sealing ring 12, the second clamping portion 14 is used to clamp with the first clamping portion 1100, so that the abutting portion 130 continues to axially squeeze the elastic sealing ring 12, thereby making the inner tube 30 and the hemostatic valve 11 maintain axial relative stillness with the deformed elastic sealing ring 12.
相比于现有技术而言，本申请实施例提供的密封组件10，其弹性密封圈12一方面以过盈配合的方式与止血阀11的阀体通道1103的壁面配合、另一方面以过盈配合的方式套设在内管30外表面，从而能够密封内管30和阀体通道1103之间的缝隙，再结合鞘管20的近端与阀体通道1103密封固定连接，使流入鞘管20和内管30的缝隙之间的血液无法外漏，起到密封作用；并且，当锁紧接头13的第二卡接部14与所述止血阀11的第一卡接部1100卡接时，抵接部130能够轴向挤压弹性密封圈12并使弹性密封圈12产生径向扩张，弹性密封圈12径向扩张带来的摩擦力增加能够阻止内管30在轴向方向上在阀体通道1103内移动，而阀体通道1103与鞘管20又是固定连接关系，进而实现内管30与鞘管20之间的锁定。如此，通过密封组件10同时实现了密封功能和位置锁定功能，而不需要分别配备上述功能的两套组件，因而密封组件10具有结构简单、易于操作的优点。进一步，在需要将内管30和鞘管20相对移动时，解除锁紧接头13的第二卡接部14与所述止血阀11的第一卡接部1100之间的卡接关系，抵接部130失去外力后，弹性密封圈12恢复形状，径向收缩，进而与内管30、阀体通道1103之间的摩擦力变小，阀体通道1103中的内管20在轴向方向上可相对于阀体通道1103移动，从而解除锁定，允许鞘管20和内管30之间的相对移动。Compared with the prior art, the sealing assembly 10 provided in the embodiment of the present application has an elastic sealing ring 12 that, on the one hand, cooperates with the wall surface of the valve body channel 1103 of the hemostatic valve 11 in an interference fit manner, and on the other hand, is sleeved on the outer surface of the inner tube 30 in an interference fit manner, thereby being able to seal the gap between the inner tube 30 and the valve body channel 1103, and then combined with the proximal end of the sheath tube 20 and the valve body channel 1103, the blood flowing into the gap between the sheath tube 20 and the inner tube 30 cannot leak out, thereby playing a role. Sealing effect; and, when the second clamping portion 14 of the locking joint 13 is clamped with the first clamping portion 1100 of the hemostatic valve 11, the abutting portion 130 can axially squeeze the elastic sealing ring 12 and cause the elastic sealing ring 12 to expand radially. The increased friction caused by the radial expansion of the elastic sealing ring 12 can prevent the inner tube 30 from moving in the valve body channel 1103 in the axial direction, and the valve body channel 1103 and the sheath tube 20 are in a fixed connection relationship, thereby achieving the locking between the inner tube 30 and the sheath tube 20. In this way, the sealing component 10 simultaneously realizes the sealing function and the position locking function without the need to equip two sets of components with the above functions respectively, so the sealing component 10 has the advantages of simple structure and easy operation. Furthermore, when the inner tube 30 and the sheath tube 20 need to be moved relative to each other, the clamping relationship between the second clamping portion 14 of the locking joint 13 and the first clamping portion 1100 of the hemostatic valve 11 is released. After the abutment portion 130 loses the external force, the elastic sealing ring 12 restores its shape and contracts radially, thereby reducing the friction between the inner tube 30 and the valve body channel 1103. The inner tube 20 in the valve body channel 1103 can move in the axial direction relative to the valve body channel 1103, thereby releasing the lock and allowing relative movement between the sheath tube 20 and the inner tube 30.
具体的，参见图1，所述内管30从所述输送装置的近端延伸到所述输送装置的远端，所述鞘管20布置在所述输送装置的远端。所述鞘管20的直径大于所述内管30的直径，以使所述内管30可移动地容纳于所述鞘管20。在所述输送装置到达目标位置时，通过所述鞘管20和所述内管30的相对移动实现植入物或者致动器的释放。例如，驱动所述鞘管20回撤实现血管支架的释放。进一步，请一并参见图2，在所述内管30从所述输送装置的近端延伸到所述输送装置的远端时，依次通过了锁紧接头13、阀体通道1103，并在阀体通道1103的近端穿过了弹性密封圈12，并在阀体通道1103的远端穿入鞘管20的近端进入鞘管20内。在一些实施例中，所述内管30还从鞘管20的远端伸出。Specifically, referring to FIG. 1 , the inner tube 30 extends from the proximal end of the delivery device to the distal end of the delivery device, and the sheath tube 20 is arranged at the distal end of the delivery device. The diameter of the sheath tube 20 is larger than the diameter of the inner tube 30, so that the inner tube 30 can be movably accommodated in the sheath tube 20. When the delivery device reaches the target position, the implant or actuator is released by the relative movement of the sheath tube 20 and the inner tube 30. For example, the sheath tube 20 is driven to withdraw to release the vascular stent. Further, please refer to FIG. 2 , when the inner tube 30 extends from the proximal end of the delivery device to the distal end of the delivery device, it passes through the locking joint 13 and the valve body channel 1103 in sequence, passes through the elastic sealing ring 12 at the proximal end of the valve body channel 1103, and penetrates the proximal end of the sheath tube 20 at the distal end of the valve body channel 1103 to enter the sheath tube 20. In some embodiments, the inner tube 30 also extends from the distal end of the sheath tube 20.
参见图2、图7，所述阀体通道1103包括位于远端的远端通道1104，位于近端的近端通道1106以及位于两者之间的中间通道1105。2 and 7 , the valve body channel 1103 includes a distal channel 1104 located at the distal end, a proximal channel 1106 located at the proximal end, and a middle channel 1105 located therebetween.
如上所述，所述远端通道1104用于与鞘管20的近端密封固定连接，以防止从鞘管20与内管30之间缝隙流入的血液从鞘管与阀体通道1103之间的结合处流出。本实施例对密封固定的具体方法没有特别的限制，例如粘结、焊接等方法。示范性地，所述远端通道1104的直径稍大于或等于所述鞘管20的外径，并在两者之间涂敷生物胶水以实现粘结。进一步，所述中间通道1105的直径小于所述远端通道1104的直径，以在两者的连接处形成第一抵接肩部1108，使鞘管20的近端可以抵接于所述第一抵接肩部1108，阻止鞘管20相对于所述远端通道1104向近端移动，以进一步增加固定效果。本实施例对所述中间通道1105的直径没有特别的限制，只要大于所述内管30的外径即可。As described above, the distal channel 1104 is used to seal and fix with the proximal end of the sheath tube 20 to prevent the blood flowing in from the gap between the sheath tube 20 and the inner tube 30 from flowing out from the joint between the sheath tube and the valve body channel 1103. This embodiment has no particular restrictions on the specific method of sealing and fixing, such as bonding, welding and the like. Exemplarily, the diameter of the distal channel 1104 is slightly larger than or equal to the outer diameter of the sheath tube 20, and biological glue is applied between the two to achieve bonding. Further, the diameter of the intermediate channel 1105 is smaller than the diameter of the distal channel 1104, so as to form a first abutting shoulder 1108 at the connection between the two, so that the proximal end of the sheath tube 20 can abut against the first abutting shoulder 1108, preventing the sheath tube 20 from moving proximally relative to the distal channel 1104, so as to further increase the fixing effect. This embodiment has no particular restrictions on the diameter of the intermediate channel 1105, as long as it is larger than the outer diameter of the inner tube 30.
所述近端通道1106的直径同样大于所述中间通道1105的直径(也即阀体通道1103近端的直径大于阀体通道1103中间部分的直径)，以在两者的连接处形成第二抵接肩部1107，所述弹性密封圈12位于所述第二抵接肩部1107的近端，所述第二抵接肩部1107用于阻止所述弹性密封圈12在受到轴向挤压力时向远端移动。同时，所述近端通道1106的直径需要能容纳所述锁紧接头13的抵接部。The diameter of the proximal channel 1106 is also larger than the diameter of the middle channel 1105 (that is, the diameter of the proximal end of the valve body channel 1103 is larger than the diameter of the middle part of the valve body channel 1103), so as to form a second abutting shoulder 1107 at the connection between the two. The elastic sealing ring 12 is located at the proximal end of the second abutting shoulder 1107, and the second abutting shoulder 1107 is used to prevent the elastic sealing ring 12 from moving toward the distal end when subjected to axial extrusion force. At the same time, the diameter of the proximal channel 1106 needs to be able to accommodate the abutting portion of the locking joint 13.
在本实施例中，弹性密封圈12用弹性材料制作，例如硅胶，橡胶。弹性密封圈12其大体呈环状结构。弹性密封圈12的外缘尺寸略大于阀体通道1103近端的近端通道1106的直径，从而与阀体通道1103的壁面过盈配合，通过适度的形变以密闭自然状态下的弹性密封圈12与近端通道1106之间的缝隙。类似地，弹性密封圈12的内缘尺寸(即内孔的尺寸)略小于内管30的外径，从而与内管30过盈配合，通过适度的形变以密闭自然状态下的弹性密封圈12内缘与内管30外表面之间的缝隙。如此以来，弹性密封圈12以过盈配合的方式填充了内管30和阀体通道1103之间的缝隙，当通过鞘管20和内管30之间的缝隙流入的血液经由中间通道1105到达弹性密封圈12的远端侧(也即图2所示弹性密封圈12的右侧)时，无法进一步通过内管30、阀体通道1103与弹性密封圈12之间的缝隙继续流到输送装置的近端。In this embodiment, the elastic sealing ring 12 is made of elastic material, such as silicone, rubber. The elastic sealing ring 12 is generally annular. The outer edge size of the elastic sealing ring 12 is slightly larger than the diameter of the proximal channel 1106 at the proximal end of the valve body channel 1103, so that it has an interference fit with the wall surface of the valve body channel 1103, and the gap between the elastic sealing ring 12 and the proximal channel 1106 in the natural state is sealed by appropriate deformation. Similarly, the inner edge size (i.e., the size of the inner hole) of the elastic sealing ring 12 is slightly smaller than the outer diameter of the inner tube 30, so that it has an interference fit with the inner tube 30, and the gap between the inner edge of the elastic sealing ring 12 and the outer surface of the inner tube 30 in the natural state is sealed by appropriate deformation. In this way, the elastic sealing ring 12 fills the gap between the inner tube 30 and the valve body channel 1103 in an interference fit manner. When the blood flowing in through the gap between the sheath tube 20 and the inner tube 30 reaches the distal side of the elastic sealing ring 12 (that is, the right side of the elastic sealing ring 12 shown in Figure 2) via the intermediate channel 1105, it cannot continue to flow to the proximal end of the conveying device through the gap between the inner tube 30, the valve body channel 1103 and the elastic sealing ring 12.
继续参见图2，一并参见图4-5，抵接部130的外表呈漏斗状。抵接部具有锁紧接头通道133，同样，锁紧接头通道133也为漏斗状。具体而言，抵接部130包括位于近端的收纳段131和位于远端的容纳段132。收纳段131的外表面从近端到远端逐渐变小，且远端的尺寸大于近端通道1106的内径。当第一卡接部1100和第二卡接部14卡接时，收纳段131抵接于近端通道1106的近端外侧。如此以来，收纳段131能够以线接触的方式限制抵接部130进入近端通道1106的深度，避免抵接部130过于挤压弹性密封圈12，进而导致弹性密封圈12产生塑性形变而失效。位于收纳段131的锁紧接头通道133同样是从近端到远端逐渐变小。如此，可以便于引导内管30进入锁紧接头通道133。容纳段132的外表面直径小于近端通道1106的直径，以便于容纳段132可移动地容纳于近端通道1106中，轴向挤压弹性密封圈12，使弹性密封圈12形变。位于容纳段132的锁紧接头通道133的直径大于或等于内管30的直径，以能容纳内管30。进一步，容纳段132的长度被配置为当第一卡接部1100和第二卡接部14卡接时，使抵接部130轴向挤压弹性密封圈12，使弹性密封圈12轴向收缩，径向向内管30、近端通道1106延伸，进而产生足够的摩擦力阻止内管30、近端通道1106相对弹性密封圈12轴向移动。Continuing to refer to FIG. 2 and FIG. 4-5 , the outer appearance of the abutment portion 130 is funnel-shaped. The abutment portion has a locking joint channel 133, and similarly, the locking joint channel 133 is also funnel-shaped. Specifically, the abutment portion 130 includes a receiving section 131 located at the proximal end and a receiving section 132 located at the distal end. The outer surface of the receiving section 131 gradually decreases from the proximal end to the distal end, and the size of the distal end is larger than the inner diameter of the proximal channel 1106. When the first clamping portion 1100 and the second clamping portion 14 are clamped, the receiving section 131 abuts against the proximal outer side of the proximal channel 1106. In this way, the receiving section 131 can limit the depth of the abutment portion 130 entering the proximal channel 1106 in a linear contact manner, thereby preventing the abutment portion 130 from over-extruding the elastic sealing ring 12, thereby causing the elastic sealing ring 12 to produce plastic deformation and fail. The locking joint channel 133 located in the receiving section 131 also gradually decreases from the proximal end to the distal end. In this way, it is convenient to guide the inner tube 30 into the locking joint channel 133. The outer surface diameter of the accommodating section 132 is smaller than the diameter of the proximal channel 1106, so that the accommodating section 132 can be movably accommodated in the proximal channel 1106, axially squeeze the elastic sealing ring 12, and deform the elastic sealing ring 12. The diameter of the locking joint channel 133 located in the accommodating section 132 is greater than or equal to the diameter of the inner tube 30, so as to accommodate the inner tube 30. Further, the length of the accommodating section 132 is configured so that when the first clamping portion 1100 and the second clamping portion 14 are clamped, the abutting portion 130 axially squeezes the elastic sealing ring 12, so that the elastic sealing ring 12 axially shrinks and radially extends toward the inner tube 30 and the proximal channel 1106, thereby generating sufficient friction to prevent the inner tube 30 and the proximal channel 1106 from axially moving relative to the elastic sealing ring 12.
继续参见图3-5，在本实施例中，所述第二卡接部14包括支撑臂141、自所述支撑臂141朝近端延伸的按压臂142、以及位于支撑臂141远端的卡块143。所述按压臂142被外力按压向下(即靠近阀体通道1103)移动时，带动所述卡块143向上(即远离阀体通道1103方向)移动，以实现和解除所述第一卡接部1100与所述第二卡接部14的卡接。例如，需要解除所述第一卡接部1100与所述第二卡接部14的卡接时，所述按压臂142被外力向内按压，带动所述卡块143向外移动，进而所述卡块143与所述第一卡接部1100分离，以解除所述第一卡接部1100与所述第二卡接部14的卡接。又例如，当所述第二卡接部14与收纳槽1102(具体见下)卡接，而需要实现第一卡接部1100与所述第二卡接部14的卡接时，所述按压臂142被外力向内按压，带动所述卡块143向外移动，然后抵接部130和止血阀11相向移动；在所述抵接部130轴向挤压所述弹性密封圈12后，释放外力使所述按压臂142在弹性力作用下恢复形状向外移动，带动所述卡块143向内移动，进而所述卡块143与所述第一卡接部1100卡接，以实现所述第一卡接部1100与所述第二卡接部14的卡接。这里的弹性力可以是第二卡接部14采用弹性材料而产生，也可以是在弹性件(例如扭簧)作用下产生的。具体地，所述支撑臂141的纵切面呈L形，即所述支撑臂141的近端向外侧延伸，以为按压臂142的移动提供更大的空间；所述支撑臂141的远端沿轴向向远端延伸。所述支撑臂141与收纳段131的近端外边缘连接，并以收纳段131的近端外边缘作为支点。优选，L形的所述支撑臂141具有拐点，所述支撑臂141在拐点处与收纳段131的近端外边缘连接。如此，结构更加紧凑，而且所述支撑臂141轴向部分不易发生掰弯。所述按压臂142从所述支撑臂141的近端水平延伸设置。优选，为了方便操作者施加外力按压，并起到防滑作用、提升使用便利性，按压臂142上可以设置有朝外部延伸的按压凸起1420。卡块143从所述支撑臂141远端向内侧(靠近阀体通道1103方向)延伸。Continuing to refer to FIGS. 3-5 , in this embodiment, the second clamping portion 14 includes a support arm 141, a pressing arm 142 extending from the support arm 141 toward the proximal end, and a clamping block 143 located at the distal end of the support arm 141. When the pressing arm 142 is pressed downward (i.e., close to the valve body channel 1103) by an external force, the clamping block 143 is driven to move upward (i.e., away from the valve body channel 1103) to achieve and release the clamping of the first clamping portion 1100 and the second clamping portion 14. For example, when it is necessary to release the clamping of the first clamping portion 1100 and the second clamping portion 14, the pressing arm 142 is pressed inward by an external force, driving the clamping block 143 to move outward, and then the clamping block 143 is separated from the first clamping portion 1100 to release the clamping of the first clamping portion 1100 and the second clamping portion 14. For another example, when the second clamping portion 14 is clamped with the receiving groove 1102 (see below for details), and the first clamping portion 1100 needs to be clamped with the second clamping portion 14, the pressing arm 142 is pressed inward by an external force, driving the clamping block 143 to move outward, and then the abutting portion 130 and the hemostatic valve 11 move toward each other; after the abutting portion 130 axially squeezes the elastic sealing ring 12, the external force is released to make the pressing arm 142 restore its shape and move outward under the action of the elastic force, driving the clamping block 143 to move inward, and then the clamping block 143 is clamped with the first clamping portion 1100, so as to realize the clamping of the first clamping portion 1100 with the second clamping portion 14. The elastic force here can be generated by the second clamping portion 14 using an elastic material, or it can be generated under the action of an elastic member (such as a torsion spring). Specifically, the longitudinal section of the support arm 141 is L-shaped, that is, the proximal end of the support arm 141 extends outward to provide a larger space for the movement of the pressing arm 142; the distal end of the support arm 141 extends axially toward the distal end. The support arm 141 is connected to the proximal outer edge of the storage section 131, and the proximal outer edge of the storage section 131 is used as a fulcrum. Preferably, the L-shaped support arm 141 has an inflection point, and the support arm 141 is connected to the proximal outer edge of the storage section 131 at the inflection point. In this way, the structure is more compact, and the axial part of the support arm 141 is not easy to bend. The pressing arm 142 is horizontally extended from the proximal end of the support arm 141. Preferably, in order to facilitate the operator to apply external force to press, and to play an anti-slip role and improve the convenience of use, a pressing protrusion 1420 extending outward can be provided on the pressing arm 142. The block 143 extends from the distal end of the support arm 141 toward the inside (towards the valve body passage 1103 ).
继续参见图2，图6-7，所述第一卡接部1100为锁止槽，所述卡块143可以容纳(也即，卡入)于所述锁止槽，从而实现第二卡接部14与第一卡接部1100之间卡接，进而限制止血阀11与锁紧接头13之间的相对位置。并且，锁止槽在轴向上的位置被配置为所述卡块143容纳于所述锁止槽时，抵接部130轴向挤压弹性密封圈12，使弹性密封圈12径向形变足以使得内管30、阀体通道1103均无法相对于弹性密封圈12轴向移动。所以，锁止槽在轴向上的位置与内管30、阀体通道1103、弹性密封圈12的材质相关。至少轴向上，所述锁止槽的尺寸与所述卡块143的尺寸相等，以阻止锁紧接头13与止血阀11之间轴向相对移动。Continuing to refer to FIG. 2 and FIG. 6-7, the first clamping portion 1100 is a locking groove, and the clamping block 143 can be accommodated (i.e., clamped) in the locking groove, so as to realize the clamping connection between the second clamping portion 14 and the first clamping portion 1100, thereby limiting the relative position between the hemostatic valve 11 and the locking joint 13. In addition, the axial position of the locking groove is configured so that when the clamping block 143 is accommodated in the locking groove, the abutting portion 130 axially presses the elastic sealing ring 12, so that the radial deformation of the elastic sealing ring 12 is sufficient to prevent the inner tube 30 and the valve body channel 1103 from axially moving relative to the elastic sealing ring 12. Therefore, the axial position of the locking groove is related to the material of the inner tube 30, the valve body channel 1103, and the elastic sealing ring 12. At least in the axial direction, the size of the locking groove is equal to the size of the clamping block 143, so as to prevent the axial relative movement between the locking joint 13 and the hemostatic valve 11.
在本实施例中，所述第二卡接部14以收纳段131的近端外边缘作为支点，按压臂142被外力按压时，所述第二卡接部14另一端的卡块143向外侧移动，以便于抵接部130进入并容纳于阀体通道1103的近端通道1106，并且通过其中的容纳段132轴向挤压弹性密封圈12，使弹性密封圈12径向形变。进一步，将按压臂142释放，将卡块143容纳于锁止槽中，第二卡接部14与第一卡接部1100卡接，同时锁定抵接部130在阀体通道1103内的位置，实现抵接部130的容纳段132一直对弹性密封圈12轴向挤压，同时在此过程中可以调整抵接部130给予弹性密封圈12的轴向挤压力至合适的程度，避免装配过程出现误差。在输送装置远端到达人体目标位置需要内管30和鞘管20之间相对移动时，可以再次按压按压臂142，卡块143与锁止槽分离，抵接部130的容纳段132可以向近端移动进而撤去对对弹性密封圈12轴向的挤压，弹性密封圈12对内管30的摩擦力减少，进而内管30可以相对于壳体110，鞘管30轴向移动。本实施例中，支撑臂141的远端端部位于容纳段132的远端端部的近侧。如此，可以将锁止槽设置在弹性密封圈12的近侧，避免弹性密封圈12向近端窜动，导致锁止槽与近端通道1106连通，进而使血液从此处流出。In this embodiment, the second clamping part 14 uses the proximal outer edge of the receiving section 131 as a fulcrum. When the pressing arm 142 is pressed by an external force, the block 143 at the other end of the second clamping part 14 moves outward, so that the abutting part 130 enters and is accommodated in the proximal channel 1106 of the valve body channel 1103, and the elastic sealing ring 12 is axially pressed by the accommodating section 132 therein, so that the elastic sealing ring 12 is radially deformed. Further, the pressing arm 142 is released, the block 143 is accommodated in the locking groove, the second clamping part 14 is clamped with the first clamping part 1100, and the position of the abutting part 130 in the valve body channel 1103 is locked, so that the accommodating section 132 of the abutting part 130 always axially presses the elastic sealing ring 12. At the same time, in this process, the axial pressing force of the abutting part 130 on the elastic sealing ring 12 can be adjusted to a suitable degree to avoid errors in the assembly process. When the distal end of the conveying device reaches the target position of the human body and the inner tube 30 and the sheath tube 20 need to move relative to each other, the pressing arm 142 can be pressed again, the block 143 is separated from the locking groove, and the accommodating section 132 of the abutment portion 130 can move proximally to remove the axial squeezing of the elastic sealing ring 12, and the friction force of the elastic sealing ring 12 on the inner tube 30 is reduced, so that the inner tube 30 can move axially relative to the housing 110 and the sheath tube 30. In this embodiment, the distal end of the support arm 141 is located proximal to the distal end of the accommodating section 132. In this way, the locking groove can be set on the proximal side of the elastic sealing ring 12 to prevent the elastic sealing ring 12 from moving proximally, causing the locking groove to be connected with the proximal channel 1106, thereby allowing blood to flow out from here.
可以理解的是，卡块与锁止槽的位置可以互换，例如，在支撑臂141上开设锁止槽、在壳体110上设置卡块，同样能够达成上述效果。It is understandable that the positions of the card block and the locking groove can be interchanged. For example, the locking groove can be provided on the support arm 141 and the card block can be provided on the housing 110, which can also achieve the above-mentioned effect.
优选地，在一些实施例中，壳体110还设置有位于锁止槽近端的收纳槽1102。收纳槽1102同样用于容纳卡块143，通过与第二卡接部14卡接，以阻止锁紧接头13相对于止血阀11轴向移动，在需要鞘管和内管之间可相对轴向移动时防止锁紧接头13被误操作将鞘管和内管锁定，提高密封组件的可靠性。在本实施例中，收纳槽1102与锁止槽的形状、大小类似。进一步，收纳槽1102与锁止槽之间的轴向距离小于锁止槽与弹性密封圈12之间的轴向距离。如此，在内管30轴向移动而带动弹性密封圈12轴向移动时，弹性密封圈12不会过于向近端移动，以避免血液从锁止槽中流出。Preferably, in some embodiments, the housing 110 is further provided with a receiving groove 1102 located at the proximal end of the locking groove. The receiving groove 1102 is also used to accommodate the card block 143, and is engaged with the second engaging portion 14 to prevent the locking joint 13 from axially moving relative to the hemostatic valve 11, and prevent the locking joint 13 from being misoperated to lock the sheath and the inner tube when the sheath and the inner tube need to be relatively axially movable, thereby improving the reliability of the sealing assembly. In this embodiment, the receiving groove 1102 is similar in shape and size to the locking groove. Furthermore, the axial distance between the receiving groove 1102 and the locking groove is less than the axial distance between the locking groove and the elastic sealing ring 12. In this way, when the inner tube 30 moves axially and drives the elastic sealing ring 12 to move axially, the elastic sealing ring 12 will not move too proximally to avoid blood flowing out of the locking groove.
不难理解，在锁紧接头13上制作第二卡持部14时，可以将抵接部130和第二卡持部14一体成型，例如一体注塑成型。如此，能够简化密封组件10的结构并免去抵接部130和第二卡持部14的装配工序，使得制作更加方便。此外，抵接部130和第二卡持部14一体成型还使得二者的相对位置固定不变，从而抵接部130与第二卡持部14能够同步移动而使它们的相对位置不存在任何偏差，当二者同时与止血阀11配合时，能够同步实现高精度匹配。例如，前述开设锁止槽和收纳槽1102的实施例中，抵接部130和第二卡持部14一体成型，可以使抵接部130和第二卡持部14的相对位置恒定不变第二卡持部14卡入锁止槽时，抵接部130轴向挤压弹性密封圈12使弹性密封圈12发生径向形变，而阻止内管30、阀体通道1103移动，实现高精度匹配。当然在其他可行实施例中，对高精度匹配要求不高的情形下，抵接部130和限位部14也可以分开制作后再装配为一体。It is not difficult to understand that when the second clamping portion 14 is made on the locking joint 13, the abutting portion 130 and the second clamping portion 14 can be integrally formed, for example, integrally injection molded. In this way, the structure of the sealing component 10 can be simplified and the assembly process of the abutting portion 130 and the second clamping portion 14 can be eliminated, making the manufacturing more convenient. In addition, the abutting portion 130 and the second clamping portion 14 are integrally formed so that the relative positions of the two are fixed, so that the abutting portion 130 and the second clamping portion 14 can move synchronously without any deviation in their relative positions, and when the two are matched with the hemostatic valve 11 at the same time, they can synchronously achieve high-precision matching. For example, in the above-mentioned embodiment in which the locking groove and the receiving groove 1102 are provided, the abutting portion 130 and the second holding portion 14 are integrally formed, so that the relative position of the abutting portion 130 and the second holding portion 14 can be kept constant. When the second holding portion 14 is inserted into the locking groove, the abutting portion 130 axially presses the elastic sealing ring 12 to cause the elastic sealing ring 12 to deform radially, thereby preventing the inner tube 30 and the valve body channel 1103 from moving, thereby achieving high-precision matching. Of course, in other feasible embodiments, when the requirements for high-precision matching are not high, the abutting portion 130 and the limiting portion 14 can also be made separately and then assembled into one.
为了符合人体工学、方便操作者的握持习惯，如图3、图4所示，第一卡接部1100、第二卡接部14的数量均为两个，两个第一卡接部1100、第二卡接部14相对设置，这样可以满足人们使用两个手指捏持柱状部件以及两指相对用力按压的施力习惯，方便操作者握持以及按压。In order to conform to ergonomics and facilitate the operator's holding habits, as shown in Figures 3 and 4, the number of the first clamping parts 1100 and the second clamping parts 14 are both two, and the two first clamping parts 1100 and the second clamping parts 14 are relatively arranged. This can meet people's habit of using two fingers to pinch the columnar component and pressing the two fingers relatively hard, which is convenient for the operator to hold and press.
继续参阅图3-5，锁紧接头13还包括设置于抵接部130外围的外壳部15，且外壳部15在周向上与第二卡接部14相邻。具体而言，外壳部15包括延伸壁151、自延伸壁151朝近端延伸的握持壁152。其中，延伸壁151设置于所述抵接部130外围，且与收纳段131连接以保护抵接部130，握持壁152用于供操作者握持。为了保持整个锁紧接头13的表面光洁，延伸壁151的横截面形状与支撑臂141的纵切面形状类似，均为呈L形。且延伸壁151与收纳段131连接，优选延伸壁151在拐点处与收纳段131连接。握持壁152的纵切面呈线形。优选，握持壁152与按压臂142类似沿轴向延伸。进一步，延伸壁151、握持壁152均环绕锁紧接头13的轴线延伸，进而横截面呈扇形。由于锁紧接头13的容纳段132伸入阀体通道1103、而仅仅剩下收纳段131保持在阀体通道1103的近端外侧，该外壳部15的结构可以增大供操作者握持的面积，方便握持外壳部15来操作抵接部130的轴向移动和转动。其中，握持壁152能够供操作者接触、便于握持，延伸壁151能够在容纳段向近端轴向移动时、遮蔽从阀体通道1103内移出的容纳段132表面而则起到保护抵接部130的作用。可以理解，握持壁152上可以设置有朝远离收纳段131延伸(也即沿径向向外延伸)、并用于防滑的防滑凸起1520，如图3及图5所示。Continuing to refer to Figures 3-5, the locking connector 13 also includes a shell portion 15 disposed on the periphery of the abutment portion 130, and the shell portion 15 is adjacent to the second clamping portion 14 in the circumferential direction. Specifically, the shell portion 15 includes an extension wall 151 and a gripping wall 152 extending from the extension wall 151 toward the proximal end. The extension wall 151 is disposed on the periphery of the abutment portion 130 and is connected to the storage section 131 to protect the abutment portion 130, and the gripping wall 152 is used for the operator to grip. In order to keep the surface of the entire locking connector 13 smooth, the cross-sectional shape of the extension wall 151 is similar to the longitudinal section shape of the support arm 141, both of which are L-shaped. The extension wall 151 is connected to the storage section 131, and preferably the extension wall 151 is connected to the storage section 131 at the inflection point. The longitudinal section of the gripping wall 152 is linear. Preferably, the gripping wall 152 extends axially similar to the pressing arm 142. Furthermore, the extension wall 151 and the gripping wall 152 both extend around the axis of the locking joint 13, and thus the cross section is fan-shaped. Since the accommodating section 132 of the locking joint 13 extends into the valve body channel 1103, and only the receiving section 131 is left outside the proximal end of the valve body channel 1103, the structure of the shell portion 15 can increase the area for the operator to hold, and it is convenient to hold the shell portion 15 to operate the axial movement and rotation of the abutment portion 130. Among them, the gripping wall 152 can be contacted by the operator and is easy to hold, and the extension wall 151 can shield the surface of the accommodating section 132 that moves out of the valve body channel 1103 when the accommodating section moves axially toward the proximal end, thereby protecting the abutment portion 130. It can be understood that the gripping wall 152 can be provided with an anti-skid protrusion 1520 that extends away from the receiving section 131 (that is, extends radially outward) and is used for anti-skid, as shown in Figures 3 and 5.
需要说明的是，外壳部15和第二卡接部14可以均为多个，多个外壳部15与多个第二卡接部14环绕轴向交替间隔设置，该种结构设置能使抵接部130以及止血阀11受力均匀，而且符合人手操作习惯。如图3所示，两个第二卡接部14对称布置，一个外壳部15位于图中两个第二卡接部14的左侧，另一个外壳部15位于图中两个第二卡接部14的右侧。优选地，抵接部130与外壳部15一体成型，或者，外壳部15、第二卡接部14以及抵接部130能够一体注塑成型制作，工艺简单，方便制作。在其他实施例中，还可以将第二卡接部14与其余部分分别注塑然后再组成形成紧接头13。It should be noted that the shell part 15 and the second clamping part 14 can both be multiple, and the multiple shell parts 15 and the multiple second clamping parts 14 are arranged alternately and spaced around the axial direction. This structural arrangement can make the abutting part 130 and the hemostatic valve 11 evenly stressed, and it is in line with the manual operation habits. As shown in Figure 3, the two second clamping parts 14 are symmetrically arranged, one shell part 15 is located on the left side of the two second clamping parts 14 in the figure, and the other shell part 15 is located on the right side of the two second clamping parts 14 in the figure. Preferably, the abutting part 130 and the shell part 15 are integrally formed, or the shell part 15, the second clamping part 14 and the abutting part 130 can be integrally injection molded, which is simple in process and convenient to manufacture. In other embodiments, the second clamping part 14 and the remaining parts can also be injection molded separately and then assembled to form the tight joint 13.
继续参考图6，在一些实施例中，为了防止锁紧接头13在相对于止血阀11朝近端移动过程中脱离，在壳体110上还设有第二阻止部1101，在外壳部15的延伸壁151远端的内表面上设有可与第二阻止部1101相抵接的第一阻止部153。如图2及图6-7所示，第二阻止部1101位于收纳槽1102近端一侧。优选，第二阻止部1101围绕壳体110一圈，能够确保其具有足够的机械强度，不易因受力过大而损坏，提升可靠性。且，第一阻止部153呈弧形，周向上从延伸壁的一侧延伸至另一侧。所述第一阻止部153与第二阻止部1101被配置为锁紧接头13相对于止血阀11朝近端移动过程中，第一阻止部153在与第二阻止部1101抵靠以阻止锁紧接头13继续移动而避免其自止血阀11脱落。更具体地，第一阻止部153的内径略小于第二阻止部1101外径。在第一阻止部153的远端以及第二阻止部1101的近端分别设有倒角。同时，在第一阻止部153的近端以及第二阻止部1101的远端分别设有抵接面。如此，在将抵接部130置入阀体通道1103时，可以在轴向方向上额外施加大一些力，令第二阻止部1101的近端面挤压第一阻止部153的远端面、并通过倒角使第一阻止部153持续变形而张大内径，之后通过第二阻止部1101，并在到达第二阻止部1101的远端侧之后恢复原来内径，从而第一阻止部153恢复后的内径略小于第二阻止部1101的外径。当锁紧接头13在相对于止血阀11持续朝近端移动时，第一阻止部153的抵接面以及第二阻止部1101的抵接面相抵接，阻止锁紧接头13在相对于止血阀11继续朝近端移动，而能起到防脱落的作用。Continuing to refer to FIG. 6, in some embodiments, in order to prevent the locking joint 13 from being disengaged during the process of moving toward the proximal end relative to the hemostatic valve 11, a second blocking portion 1101 is further provided on the housing 110, and a first blocking portion 153 that can abut against the second blocking portion 1101 is provided on the inner surface of the distal end of the extension wall 151 of the outer shell 15. As shown in FIG. 2 and FIG. 6-7, the second blocking portion 1101 is located on the proximal side of the receiving groove 1102. Preferably, the second blocking portion 1101 surrounds the housing 110 in one circle, which can ensure that it has sufficient mechanical strength and is not easily damaged due to excessive force, thereby improving reliability. Moreover, the first blocking portion 153 is arc-shaped and extends from one side of the extension wall to the other side in the circumferential direction. The first blocking portion 153 and the second blocking portion 1101 are configured so that during the process of the locking joint 13 moving toward the proximal end relative to the hemostatic valve 11, the first blocking portion 153 abuts against the second blocking portion 1101 to prevent the locking joint 13 from continuing to move and prevent it from falling off from the hemostatic valve 11. More specifically, the inner diameter of the first blocking portion 153 is slightly smaller than the outer diameter of the second blocking portion 1101. Chamfers are provided at the distal end of the first blocking portion 153 and the proximal end of the second blocking portion 1101. At the same time, abutment surfaces are provided at the proximal end of the first blocking portion 153 and the distal end of the second blocking portion 1101. In this way, when the abutment portion 130 is placed in the valve body channel 1103, a larger force can be applied in the axial direction to make the proximal end surface of the second blocking portion 1101 squeeze the distal end surface of the first blocking portion 153, and the first blocking portion 153 is continuously deformed and enlarged in inner diameter by chamfering, and then passes through the second blocking portion 1101, and restores the original inner diameter after reaching the distal end side of the second blocking portion 1101, so that the restored inner diameter of the first blocking portion 153 is slightly smaller than the outer diameter of the second blocking portion 1101. When the locking connector 13 continues to move proximally relative to the hemostatic valve 11, the abutting surface of the first blocking portion 153 and the abutting surface of the second blocking portion 1101 abut against each other, preventing the locking connector 13 from continuing to move proximally relative to the hemostatic valve 11, thereby preventing it from falling off.
此外，第二卡接部14的按压臂142内侧(面向抵接部130的一侧)也可以设置有第三阻止部1431，第三阻止部1431位于第二阻止部1101轴向近端，且能够与第二阻止部1101抵接，避免抵接部130置入阀体通道1103内过深，进而过于轴向挤压弹性密封圈12，导致弹性密封圈120失效。同时由于，第三阻止部1431与第二阻止部1101之间抵接时可以形成面接触，更加安全可靠。In addition, a third blocking portion 1431 may also be provided on the inner side of the pressing arm 142 of the second clamping portion 14 (the side facing the abutting portion 130), and the third blocking portion 1431 is located at the axial proximal end of the second blocking portion 1101 and can abut against the second blocking portion 1101 to prevent the abutting portion 130 from being inserted too deeply into the valve body channel 1103, thereby excessively squeezing the elastic sealing ring 12 in the axial direction, causing the elastic sealing ring 120 to fail. At the same time, since the third blocking portion 1431 and the second blocking portion 1101 can form a surface contact when abutting, it is safer and more reliable.
在一些实施例中，密封组件还可以包括设置在阀体通道1103内的垫片16。如图2所示，垫片16位于弹性密封圈12的近端侧。垫片16的刚度大于弹性密封圈12的刚度，锁紧接头13经由垫片16轴向挤压弹性密封圈12。通过刚性较大的垫片16能够更加均匀的将锁紧接头13产生的挤压力传递至弹性密封圈12，使弹性密封圈12产生更加均匀的形变而在弹性密封圈12接触的各个位置更加均匀增加摩擦力，增大整个密封组件10的可靠性。优选地，垫片16的远端侧设置有朝向弹性密封圈12延伸的凸出(图未标示)，弹性密封圈12的近端侧设置有朝向垫片16的凹槽，垫片16的远端侧抵靠弹性密封圈12的近端侧、且垫片16的凸出卡持在弹性密封圈12的容纳部内。凸出和凹槽的嵌合设计，能够保证垫片16和弹性密封圈12的同轴度，方便二者组装且使二者稳定接合。In some embodiments, the sealing assembly may further include a gasket 16 disposed in the valve body channel 1103. As shown in FIG. 2 , the gasket 16 is located at the proximal side of the elastic sealing ring 12. The rigidity of the gasket 16 is greater than that of the elastic sealing ring 12, and the locking joint 13 axially squeezes the elastic sealing ring 12 via the gasket 16. The gasket 16 with greater rigidity can more evenly transmit the extrusion force generated by the locking joint 13 to the elastic sealing ring 12, so that the elastic sealing ring 12 is deformed more evenly and the friction force is more evenly increased at each position where the elastic sealing ring 12 contacts, thereby increasing the reliability of the entire sealing assembly 10. Preferably, the distal side of the gasket 16 is provided with a protrusion extending toward the elastic sealing ring 12 (not shown in the figure), the proximal side of the elastic sealing ring 12 is provided with a groove toward the gasket 16, the distal side of the gasket 16 abuts against the proximal side of the elastic sealing ring 12, and the protrusion of the gasket 16 is clamped in the accommodating portion of the elastic sealing ring 12. The interlocking design of the protrusion and the groove can ensure the coaxiality of the gasket 16 and the elastic sealing ring 12, facilitate the assembly of the two and ensure stable connection between the two.
继续参见图1-2以及图6-8，在对应中间通道1105(即阀体通道1103中部)部位的壳体110外侧，止血阀11还设有分支管17，分支管17与软管18密封固定连接。软管18用于连接注射器，以便于注射器将生理盐水注入鞘管30和内管20之间的缝隙内，进而排出该缝隙内的空气。分支管17具有沿其轴向延伸的连接通道，连接通道的一端与阀体通道1103的中间通道1105连通，另一端与软管18的内腔连通。软管18的另一端设有冲洗阀19，作为与注射器连接的接口，并控制生理盐水的注入。Continuing to refer to Figs. 1-2 and 6-8, the hemostatic valve 11 is further provided with a branch tube 17 on the outside of the housing 110 corresponding to the middle channel 1105 (i.e., the middle of the valve body channel 1103), and the branch tube 17 is sealed and fixedly connected to the hose 18. The hose 18 is used to connect a syringe so that the syringe can inject saline into the gap between the sheath tube 30 and the inner tube 20, and then exhaust the air in the gap. The branch tube 17 has a connecting channel extending along its axial direction, one end of the connecting channel is connected to the middle channel 1105 of the valve body channel 1103, and the other end is connected to the inner cavity of the hose 18. The other end of the hose 18 is provided with a flushing valve 19, which serves as an interface for connecting with the syringe and controls the injection of saline.
以上对本实用新型实施方式提供的密封组件进行了详细地介绍，本文中应用了具体个例对本实用新型的原理及实施方式进行了阐述，以上实施方式的说明只是用于帮助理解本实用新型的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书的内容不应理解为对本实用新型的限制。The sealing assembly provided by the implementation method of the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above implementation method is only used to help understand the idea of the utility model. There may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.
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| CN202420144109.1UActiveCN221808095U (en) | 2023-10-26 | 2024-01-19 | Delivery device and delivery kit of TIPS covered stent |
| CN202420143882.6UActiveCN221712362U (en) | 2023-10-26 | 2024-01-19 | A sealing assembly for a conveying device |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420144109.1UActiveCN221808095U (en) | 2023-10-26 | 2024-01-19 | Delivery device and delivery kit of TIPS covered stent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117179979A (en)* | 2023-10-26 | 2023-12-08 | 应脉医疗科技(上海)有限公司 | Conveying device and conveying suite of TIPS tectorial membrane support |
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| CN221808095U (en) | 2024-10-08 |
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