CN110664523B - Conveyor for delivering interventional medical devices - Google Patents
Conveyor for delivering interventional medical devicesDownload PDFInfo
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- CN110664523B CN110664523BCN201810716154.9ACN201810716154ACN110664523BCN 110664523 BCN110664523 BCN 110664523BCN 201810716154 ACN201810716154 ACN 201810716154ACN 110664523 BCN110664523 BCN 110664523B
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
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Abstract
Description
Translated fromChinese技术领域technical field
本发明涉及介入医疗器械技术领域，尤其涉及一种用于输送介入医疗器械的输送器。The present invention relates to the technical field of interventional medical instruments, in particular to a conveyor for delivering interventional medical instruments.
背景技术Background technique
人体的主动脉分为升主动脉、主动脉弓、胸降主动脉和腹主动脉。由于各种病理改变，如炎症、溃疡等，会造成主动脉血管内膜或血管壁损伤，在血流冲击的作用下，容易发生动脉瘤疾病。动脉瘤一旦破裂，大量血液将会流出血管，当病人血液循环的血量供应不足时，会造成人体休克或死亡。The human aorta is divided into ascending aorta, aortic arch, descending thoracic aorta, and abdominal aorta. Due to various pathological changes, such as inflammation and ulcers, the intima or vascular wall of the aorta will be damaged. Once the aneurysm ruptures, a large amount of blood will flow out of the blood vessel. When the blood supply of the patient's blood circulation is insufficient, it will cause the body to shock or die.
对于动脉瘤疾病的治疗方法，常见的为手术治疗和药物治疗。目前的治疗方式以手术治疗为主，传统的手术治疗也就是开刀手术，是在建立体外血液循环后，将动脉瘤病变血管进行切除，再利用人造血管连接血管，以实现动脉血液的正常循环。由于采用传统手术治疗动脉瘤疾病的方式，手术风险高，对人体创伤较大，且术后需要较长的时间恢复，尤其会对老年人或小孩儿等体弱人群，造成较大的身体创伤。For the treatment of aneurysm disease, surgery and drug therapy are common. The current treatment method is mainly surgical treatment. The traditional surgical treatment is open surgery. After the establishment of extracorporeal blood circulation, the aneurysm diseased blood vessels are excised, and artificial blood vessels are used to connect the blood vessels to achieve normal arterial blood circulation. Due to the traditional surgical treatment of aneurysm disease, the surgical risk is high, the trauma to the human body is relatively large, and it takes a long time to recover after surgery, especially for the elderly or children and other frail people, causing greater physical trauma .
近年来，利用介入治疗方式治疗心血管疾病已成为发展趋势。随着介入技术的不断发展，采用覆膜支架治疗主动脉瘤和动脉夹层疾病的优势日显突出，覆膜支架是指与血管大小相适应的人工血管，它主要由覆膜和支撑覆膜的支架组成，覆膜一般是由涤纶或e-PTFE膜制成，支撑支架主要由不锈钢丝或镍钛合金丝编织而成。覆膜支架在使用输送器输送到病变部位进行治疗时，是先将支架压缩进输送器的鞘管内，一般选择在股动脉或髂动脉位置穿刺血管，利用导丝建立轨道，将输送器经髂动脉—腹主动脉—胸主动脉—主动脉弓—升主动脉建立输送路径，进而输送到病变指定位置，然后释放支架，支架展开并紧贴动脉瘤管壁，支架的覆膜从而将血流和病变部位隔绝，消除了血流对病变部位动脉瘤壁的冲击，重新建立起血液循环的正常通道，最后撤出导丝和输送器，从而实现对动脉瘤和动脉夹层的介入治疗。In recent years, the use of interventional therapy to treat cardiovascular disease has become a development trend. With the continuous development of interventional technology, the advantages of using stent-grafts in the treatment of aortic aneurysm and arterial dissection have become increasingly prominent. It consists of a stent, the covering is generally made of polyester or e-PTFE membrane, and the support stent is mainly woven from stainless steel wire or nickel-titanium alloy wire. When the stent-graft is transported to the lesion site by a conveyor for treatment, the stent is first compressed into the sheath of the conveyor. Generally, the blood vessel is punctured at the position of the femoral artery or iliac artery, and a guide wire is used to establish a track, and the conveyor is passed through the iliac artery. Artery - abdominal aorta - thoracic aorta - aortic arch - ascending aorta to establish a delivery path, and then transport to the designated location of the lesion, and then release the stent, the stent is deployed and close to the aneurysm wall, the stent is covered to reduce blood flow and lesions. Partial isolation eliminates the impact of blood flow on the aneurysm wall of the diseased part, re-establishes the normal channel of blood circulation, and finally withdraws the guide wire and the delivery device, thereby realizing the interventional treatment of aneurysm and arterial dissection.
采用覆膜支架介入治疗方法的成本低、治疗周期短、对人体创伤小，因而逐渐成为治疗主动脉瘤疾病的主流。覆膜支架的输送器在覆膜支架介入治疗过程中起着重要作用。然而现有的大多数输送器，由于其导杆的韧性较差且其轴向设有长条形的开口，而导杆在使用过程中在受到径向挤压时，会导致导杆发生径向收缩或者导杆的开口两侧朝该开口的内部发生变形，使得导杆和滑动手柄之间的间隙变大，在临床操作过程中极易造成操作者的衣服、手套、床单等手术物品被夹进滑动手柄与导杆之间的间隙内，从而影响临床医生操作，甚至有可能造成临床失败。The use of stent-graft interventional therapy has the advantages of low cost, short treatment period and less trauma to the human body, so it has gradually become the mainstream of the treatment of aortic aneurysm diseases. The delivery device of the stent-graft plays an important role in the interventional treatment of the stent-graft. However, for most of the existing conveyors, due to the poor toughness of the guide rod and the elongated opening in the axial direction, when the guide rod is radially squeezed during use, it will cause the guide rod to have diameters. It shrinks or deforms toward the inside of the opening on both sides of the guide rod, so that the gap between the guide rod and the sliding handle becomes larger. Clamp into the gap between the sliding handle and the guide rod, thereby affecting the clinician's operation, and may even cause clinical failure.
发明内容SUMMARY OF THE INVENTION
基于此，有必要针对输送器的导杆在受到径向挤压时容易发生变形，进而导致滑动手柄与导杆之间的间隙变大，而容易夹到操作者的衣服、手套、床单等手术物品的问题提供一种新的用于输送介入医疗器械的输送器。Based on this, it is necessary for the guide rod of the conveyor to be easily deformed when it is radially squeezed, which in turn causes the gap between the sliding handle and the guide rod to become larger, and it is easy to clip the operator's clothes, gloves, bed sheets and other operations. The problem of articles provides a new delivery device for delivering interventional medical devices.
一种用于输送介入医疗器械的输送器，包括导杆和套设于所述导杆上的滑动手柄，所述导杆设有一腔体且轴向设有至少一个开口，所述至少一个开口与所述导杆的腔体连通，在所述导杆的腔体内设有至少一个支撑件，所述支撑件对所述导杆的周向侧壁提供径向支撑，所述支撑件的一部分穿过所述导杆的所述开口并与所述滑动手柄连接。A conveyor for delivering interventional medical instruments, comprising a guide rod and a sliding handle sleeved on the guide rod, the guide rod is provided with a cavity and axially provided with at least one opening, the at least one opening communicated with the cavity of the guide rod, at least one support member is provided in the cavity of the guide rod, the support member provides radial support to the circumferential side wall of the guide rod, and a part of the support member Pass through the opening of the guide rod and connect with the sliding handle.
在其中一个实施例中，所述支撑件包括内部中空的支撑部和至少一个凸起，所述至少一个凸起连接在所述支撑部的外侧，所述导杆的内径与所述支撑部的外径的差值的取值范围为[0.05,0.20]毫米，所述至少一个凸起的远离所述支撑部的一端穿过所述导杆的所述开口并与所述滑动手柄连接。In one embodiment, the support member includes an inner hollow support portion and at least one protrusion, the at least one protrusion is connected to the outer side of the support portion, and the inner diameter of the guide rod is the same as that of the support portion. The difference of the outer diameters ranges from [0.05, 0.20] mm, and one end of the at least one protrusion away from the support portion passes through the opening of the guide rod and is connected with the sliding handle.
在其中一个实施例中，还包括鞘管，所述鞘管与所述支撑件连接。In one of the embodiments, a sheath is also included, the sheath is connected to the support.
在其中一个实施例中，所述支撑件的轴向长度小于或等于所述滑动手柄的轴向长度。In one of the embodiments, the axial length of the support is less than or equal to the axial length of the sliding handle.
在其中一个实施例中，所述滑动手柄的内部设有两个筋板，所述凸起夹设于两个所述筋板之间。In one embodiment, two ribs are arranged inside the sliding handle, and the protrusion is sandwiched between the two ribs.
在其中一个实施例中，所述支撑件固设在所述滑动手柄的近端和/或远端。In one of the embodiments, the support member is fixed at the proximal end and/or the distal end of the sliding handle.
在其中一个实施例中，所述凸起的厚度小于或等于所述导杆的所述开口的宽度。In one of the embodiments, the thickness of the protrusion is less than or equal to the width of the opening of the guide rod.
在其中一个实施例中，所述凸起的一端设有凸台，所述凸台的径向长度小于所述凸起的径向长度。In one embodiment, a boss is provided at one end of the protrusion, and the radial length of the boss is smaller than the radial length of the protrusion.
在其中一个实施例中，所述支撑件上设有两个所述凸起，且所述两个所述凸起围绕所述支撑部对称设置。In one embodiment, the support member is provided with two protrusions, and the two protrusions are symmetrically arranged around the support portion.
在其中一个实施例中，所述凸起的远离所述支撑部的一端设有突出部。In one of the embodiments, a protruding portion is provided at one end of the protrusion away from the supporting portion.
上述用于输送介入医疗器械的输送器，在导杆的腔体内设有至少一个支撑件，且支撑件能够对导杆的周向侧壁提供径向支撑，因而当导杆的与滑动手柄重叠的部位受到径向挤压时，导杆内部的支撑件能够给与导杆足够的径向支撑力，从而避免导杆径向受力而变形，由此解决了当导杆受到径向挤压而变形，导致导杆与滑动手柄之间的空隙变大，而容易夹到操作者的衣服、手套、床单等手术物品的问题。The above-mentioned conveyor for delivering interventional medical instruments is provided with at least one support member in the cavity of the guide rod, and the support member can provide radial support to the circumferential side wall of the guide rod, so when the guide rod overlaps with the sliding handle When the part of the guide rod is radially squeezed, the support inside the guide rod can give the guide rod enough radial support force, so as to avoid the guide rod from being deformed by radial force, thus solving the problem when the guide rod is radially squeezed. The deformation causes the gap between the guide rod and the sliding handle to become larger, and it is easy to clip the operator's clothes, gloves, sheets and other surgical items.
附图说明Description of drawings
图1为实施例1的输送器的结构示意图；Fig. 1 is the structural representation of the conveyor of embodiment 1;
图2为实施例1的输送器的滑动手柄的沿导杆轴向的一个剖视图；2 is a cross-sectional view of the sliding handle of the conveyor according to Embodiment 1 along the axial direction of the guide rod;
图3为实施例1的输送器的滑动手柄在另一观察视角下的沿导杆轴向的剖视图；3 is a cross-sectional view of the sliding handle of the conveyor of Embodiment 1 along the axial direction of the guide rod from another viewing angle;
图4为实施例1的输送器的支撑件的结构示意图；4 is a schematic structural diagram of a support member of the conveyor of Embodiment 1;
图5为实施例1的输送器的支撑件的另一结构示意图；5 is another structural schematic diagram of the support member of the conveyor of Embodiment 1;
图6为实施例2的输送器的滑动手柄沿导杆轴向的一个剖视图；6 is a cross-sectional view of the sliding handle of the conveyor of Embodiment 2 along the axial direction of the guide rod;
图7为实施例2的输送器的支撑件的结构示意图；Fig. 7 is the structural schematic diagram of the support member of the conveyor of Embodiment 2;
图8为实施例2的输送器的支撑件的另一结构示意图；Fig. 8 is another structural schematic diagram of the support member of the conveyor of Embodiment 2;
图9为实施例3的输送器的滑动手柄沿导杆轴向的一个剖视图；9 is a cross-sectional view of the sliding handle of the conveyor according to Embodiment 3 along the axial direction of the guide rod;
图10为实施例3的输送器的支撑件的结构示意图；10 is a schematic structural diagram of a support member of the conveyor of Embodiment 3;
图11为实施例3的设有另一支撑件的输送器的滑动手柄沿导杆轴向的一个剖视图；11 is a cross-sectional view of the sliding handle of the conveyor provided with another support according to Embodiment 3 along the axial direction of the guide rod;
图12为实施例3的输送器的另一支撑件的结构示意图。FIG. 12 is a schematic structural diagram of another support member of the conveyor of Embodiment 3. FIG.
具体实施方式Detailed ways
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
需要说明的是，在介入医疗器械领域，一般将植入人体或动物体内的医疗器械的距离操作者较近的一端称为近端，将距离操作者较远的一端称为远端，并依据此原理定义医疗器械的任一部件的近端和远端。It should be noted that, in the field of interventional medical devices, the end of the medical device implanted in the human body or animal body that is closer to the operator is generally called the proximal end, and the end that is farther away from the operator is called the distal end. This principle defines the proximal and distal ends of any component of a medical device.
以下将结合具体实施例进一步详细说明本发明的技术方案。The technical solutions of the present invention will be further described in detail below with reference to specific embodiments.
实施例1Example 1
实施例1提供一种医用输送器，可用于输送和释放支架等介入医疗器械。本实施例以支架为例详细介绍输送器的结构，但输送器并不限定于仅输送支架。请参考图1及图2，输送器100包括由内至外同轴依次套设的鞘芯管110、推杆120、鞘管130、导杆140和设于鞘芯管110远端端部的端头150，还包括与导杆140的远端相连的固定手柄160、套设于导杆140上的滑动手柄170；导杆140设有一腔体(图未示)且轴向设有至少一个开口141，各个开口141与导杆140的腔体连通，导杆140的腔体内设有至少一个支撑件180，支撑件180对导杆140的周向侧壁提供径向支撑，支撑件180的一部分穿过导杆140的开口141并与滑动手柄170连接。Embodiment 1 provides a medical delivery device that can be used to deliver and release interventional medical devices such as stents. In this embodiment, a stent is used as an example to describe the structure of the conveyor in detail, but the conveyor is not limited to only conveying stents. Please refer to FIG. 1 and FIG. 2 , the
具体地，请一并参考图2-图4，支撑件180包括内部中空的支撑部181和两个凸起182，各个凸起182连接在支撑部181的外侧，优选地，导杆140上设有两个对称的开口141，支撑件180上对应设有两个凸起182，且两个凸起182围绕支撑部181对称设置，这样的两个凸起182类似支撑部181的两个侧翼。支撑部181的外径(外接圆的直径)略小于导杆140的内径(内切圆的直径)，具体地，导杆140的内径与支撑部181的外径的差值的取值范围为[0.05,0.20]毫米，优选地，差值的取值为0.1毫米，支撑部181的周向对导杆140的周向侧壁提供径向支撑，各个凸起182的远离支撑部181的一端穿过导杆140的开口141并与滑动手柄170连接。需要说明的是，以下任一实施例中所涉及的“连接”，均表示直接连接或者间接连接。Specifically, please refer to FIG. 2 to FIG. 4 together, the
端头150和鞘芯管110均为中心呈腔体的部件，端头150可以为TIP头，且端头150与鞘芯管110的远端固为一体作为导丝的通道，以保证穿有导丝的输送器100能够在导丝的引导下顺利进入血管。推杆120为管材型部件，推杆120与鞘芯管110的轴向位置相对静止，且推杆120的内径大于鞘芯管110的外径。当鞘芯管110进行轴向滑动时，推杆120与鞘芯管110一起做同步移动。可以理解的是，其他实施例中，根据需要输送的医疗器械的实际需要，推杆120也可以相对鞘芯管110沿导杆140轴向移动。The
鞘管130为套在推杆120外缘且可以相对推杆120进行轴向滑动的部件。当鞘管130的远端与端头150的近端接触时，鞘管130、鞘芯管110和推杆120的远端端面配合，形成收容支架(图未示)的空间，且支架的近端抵靠在推杆120的远端端面上，推杆120的远端端面在支架释放过程中对支架的轴向移动起限位作用。由于导杆140的远端与固定手柄160固定连接，且滑动手柄170套设于导杆140上，因而滑动手柄170能够沿着导杆140相对于固定手柄160进行轴向移动。当滑动手柄170朝向固定手柄160靠拢时，在推杆120与端头150之间有部分鞘芯管110裸露在推杆120外面，且裸露长度为支架压缩后的有效长度，也即滑动手柄170朝远离固定手柄160的方向运动的最大距离。当向近端拉动滑动手柄170时，鞘管130后撤，支架会失去鞘管130的约束，从而被释放打开。The
固定手柄160为壳体结构，是输送器100的一个固定部件，目的是方便医生在临床操作过程中握持，从而使输送器100整体处于一个稳定状态。鞘芯管110和推杆120贯穿固定手柄160和滑动手柄170。导杆140为支架轴向释放的导向机构，其远端固定在固定手柄160内，近端自滑动手柄170穿出。滑动手柄170套在导杆140上，导杆140的内部中空从而形成一腔体，导杆140的外表面沿长度方向(也即轴向)设有至少一个长条形的开口141，这些开口141均与导杆140的腔体连通。滑动手柄170与鞘管130的近端通过一鞘管接头131固定连接，鞘管接头131自导杆140的内部从其开口141穿出，且一端与鞘管130的近端固定连接，另一端与滑动手柄170连接。鞘管130的近端固定在滑动手柄170内，其远端自固定手柄160穿出。滑动手柄170沿导杆140的轴向滑动可以带动鞘管130和鞘管接头131做同步滑动，进而实现通过鞘管130的后撤使支架释放打开。The fixed
在另一实施例中，可通过设置鞘管130的近端与支撑件180连接进而取代鞘管接头131，能够简化输送器100的内部结构并节省耗材。由于支撑件180与滑动手柄170直接或间接连接且两者均能够沿导杆140的轴向做同步移动(也即两者不会发生相对移动)，而鞘管接头131的作用是将鞘管130的近端固定在滑动手柄170内部，从而使鞘管130能够与滑动手柄170一起沿导杆140的轴向做同步移动，因而，通过将鞘管130的近端与支撑件180固定连接即可实现鞘管130与滑动手柄170沿导杆140的轴向做同步移动。例如，可将鞘管130的近端连接在支撑件180的远端或近端，或者支撑件180内部的任一位置处，在此不做限制，只要能够使鞘管130的近端固定连接在支撑件180上，且不会对其他部件造成影响即可。In another embodiment, the proximal end of the
本实施例中，滑动手柄170的内部设有至少两个筋板171，同一个凸起182的远端和近端分别与两个筋板171连接，也即同一个凸起182夹设在两个筋板171之间，从而通过设置的若干筋板171能够更加容易地将支撑件180与滑动手柄170固定连接起来，使得两者能够沿着导杆140的轴向做同步移动。可以理解，鞘管接头131也可通过与筋板171的直接或间接连接而使鞘管130与滑动手柄170也能够沿着导杆140的轴向进行同步移动。本实施例中，每个凸起182均卡设在相邻的两个筋板171之间，滑动手柄170的两个相互配合的筋板171足以将相应的凸起182牢固地卡接在滑动手柄170上。在另一实施例中，凸起182的远端和近端分别与滑动手柄170的两个筋板171固定连接。在另一实施例中，如果滑动手柄上未设有筋板171，则凸起182的远离支撑部181的一端可直接连接在滑动手柄170的内壁上，从而将支撑件180与滑动手柄170固定连接起来。In this embodiment, at least two
可在导杆140的内部设置一个或多个支撑件180，每个支撑件180上凸起182的个数和设置位置可根据导杆140上的开口141的个数和设置位置而定，且每个支撑件180上凸起182的总数小于或等于导杆140上开口141的总数，每个凸起182需能够自导杆140的内部穿过导杆140上相应的开口141。One or
支撑件180可设置在滑动手柄170的近端和/或远端。本实施例中，在滑动手柄170的近端和远端分别设有一个支撑件180，因而当导杆140的与滑动手柄170重叠的部位受到径向挤压时，导杆140内部的支撑部181能够给与导杆140足够的径向支撑力，从而避免导杆140径向受力变形，由此解决了当导杆140受到径向挤压而变形，导致导杆140与滑动手柄170之间的空隙变大，而容易夹到操作者的衣服、手套、床单等手术物品的问题。
支撑部181可以为环形结构，也可以为内部中空的多边形结构，形状在此不做限制。支撑部181的外表面的周向长度小于或等于导杆140的内表面的周向长度。本实施例中，支撑部181的外表面的周向长度略小于导杆140的内表面的周向长度，支撑部181为周向封闭的环状结构，此时，支撑部181的外表面的面积最大，且能够保证支撑部181能够随着滑动手柄170的轴向移动而顺畅地做同步移动。可以理解，支撑部181的外表面上沿其轴向，可以有部分的周向长度小于导杆140的内表面的周向长度，也可以是所有的周向长度均小于导杆140的内表面的周向长度，只要支撑部181的周向足以支撑导杆140受到的径向挤压而不使其变形即可，由此便可减轻支撑件180的重量。The
设于滑动手柄170近端的支撑部181的腔体的内切圆的直径大于推杆120的外径，设于滑动手柄170远端的支撑部181的腔体的内切圆直径大于鞘管130的外径，从而能够保证支撑件180在随着滑动手柄170沿导杆140的轴向进行滑动时，不会出现滑动不顺畅的现象。The diameter of the inscribed circle of the cavity of the
凸起182的远离支撑部181的一端从导杆140的开口141穿出，凸起182的厚度(也即垂直于开口141的轴向的长度)小于或等于导杆140的开口141的宽度。本实施例中，凸起182的远离支撑部181的一端从导杆140的开口141穿出，以能够与滑动手柄170连接，凸起182的厚度略小于导杆140的开口141的宽度，因而，当导杆140的临近开口141的部位受到径向挤压时，凸起182也能够对导杆140的开口141的两侧提供足够的支撑，从而保持导杆140的开口141的宽度几乎不变。在另一实施例中，请参考图5，凸起182的远离支撑部181的一端设有突出部183，突出部183的形状不限，只要能够增大凸起182与滑动手柄170内部的接触面积，进而增强凸起182与滑动手柄170之间的连接即可。此外，凸起182的自与支撑部181连接的一端至与突出部183相交的部分的长度略大于导杆140的开口141的径向长度，避免了对滑动手柄170在轴向移动时的影响。The end of the
实施例2Example 2
实施例2的输送器200与实施例1的输送器100相同的部分在此不再赘述，两者的不同之处主要在于，输送器200的凸起282的一端设有凸台284，请一并参考图6-图8，凸台284的径向长度小于凸起282的径向长度，优选地，凸台284的径向长度不大于导杆240的开口241的径向长度，从而使凸台284不会影响滑动手柄270的轴向移动。当支撑件280设置在滑动手柄270的近端或远端时，凸起282穿过导杆240的开口241并与相邻的两个筋板271连接，同时，凸台284的远离支撑部281的一端与滑动手柄270的近端或远端的壳体内侧的边缘部分抵接，从而给与滑动手柄270壳体的两端一定的径向支撑力。The same parts of the
实施例3Example 3
实施例3的输送器300与实施例1的输送器100相同的部分在此不再赘述，请一并参考图9-图10，两者的不同之处主要在于，输送器300的支撑件380的轴向长度略小于滑动手柄370的轴向长度，也即滑动手柄370的轴向长度与支撑件380的轴向长度的差值约为滑动手柄370的壳体在近端的壳体末端372和远端的壳体末端372的轴向厚度之和。导杆340内部仅设置一个支撑件380，且支撑件380的轴向长度(也即支撑部381的轴向长度)与滑动手柄370的轴向长度相当。此时，鞘管的近端可直接与支撑件380连接，连接位置不限，而无需使用鞘管接头。The same parts of the
可以理解，在另一实施例中，可在支撑件380的凸起382上设置一个如实施例2所描述的凸台。请一并参考图11-图12，可在支撑件380的凸起382的远离支撑部381的一端设置突出部383。突出部383的形状不限，只要能够增大凸起382与滑动手柄370内部的接触面积，进而增强凸起382与滑动手柄370之间的连接即可。此外，凸起382的自与支撑部381连接的一端至与突出部383相交的部分的长度略大于导杆340的开口341的径向长度，避免了对滑动手柄370在轴向移动时的影响。It can be understood that, in another embodiment, a boss as described in Embodiment 2 may be provided on the
在另一实施例中，可在支撑部381的周向上设置一开口，使得鞘管接头能够依次穿过支撑部381的开口和导杆340的开口而与滑动手柄370连接，从而将鞘管的近端与滑动手柄370连接起来。支撑部381上与鞘管接头配合使用的开口的位置，可设置在支撑部381的近端或远端，或介于近端和远端之间不同于凸起382所在位置的其他任一位置。当支撑部381上的开口设置在支撑部381的近端时，鞘管接头于滑动手柄370的近端将鞘管与滑动手柄370连接起来。In another embodiment, an opening can be provided in the circumferential direction of the
本实施例的输送器300中，支撑部381的轴向长度与滑动手柄370的轴向长度相当，因而支撑部381能够给与被滑动手柄370所覆盖的导杆340部分足够的支撑力，使得滑动手柄370在沿导杆340的轴向进行移动时，与滑动手柄370进行配合的导杆340部分不会因受到径向挤压而变形，从而解决了当导杆340受到径向挤压而变形，导致导杆340与滑动手柄370之间的空隙变大，而容易夹到操作者的衣服、手套、床单等手术物品的问题。In the
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.
Claims (9)
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