技术领域technical field
本发明涉及医疗鞘管技术领域，具体涉及一种远端可调弯鞘管，用于人体微创介入诊断治疗手术中，建立通道，导入或导出诊疗器械、药物或体液。The invention relates to the technical field of medical sheaths, in particular to an adjustable distal-end sheath, which is used in minimally invasive interventional diagnosis and treatment operations on the human body to establish channels and import or export medical instruments, medicines or body fluids.
背景技术Background technique
目前，介入类诊疗鞘管已经被广泛应用于人体介入诊疗手术中，通常需要借助各种不同结构、形状、尺寸的介入类诊疗鞘管来建立患者体内病变部位与外界操作端的通道，以导入各种各样的诊疗器械、药物或植入器械至病患的病变部位，或者导出病变部位的体液等，达到避免使用外科手术即可到达病变部位的目的。鞘管由管体和手柄组成，管体较长，并且具有一个用作通道的内腔，管体具有远端和近端，远端可以方便进入人体管腔(如血管)，近端则用于连接手柄供操作者操作。例如：导引导管、输送鞘管、导引鞘管等。At present, interventional diagnosis and treatment sheaths have been widely used in human interventional diagnosis and treatment operations. It is usually necessary to use interventional diagnosis and treatment sheaths of various structures, shapes, and sizes to establish a channel between the diseased part of the patient and the external operating end, so as to introduce various Various medical devices, drugs or implanted devices can be delivered to the diseased part of the patient, or the body fluid of the diseased part can be exported, so as to achieve the purpose of avoiding the use of surgery to reach the diseased part. The sheath tube is composed of a tube body and a handle. The tube body is long and has a lumen used as a channel. The tube body has a distal end and a proximal end. It is connected to the handle for the operator to operate. For example: guiding catheter, delivery sheath, guiding sheath, etc.
在使用时，鞘管的远端一般先插入到血管内，然后继续插入管体使远端到达预定位置(如病变部位)，药物、体液或器械等从鞘管的内腔通过。管体的内腔直径越大则越容易输送器械和药物，管体的外径越小则对人体管腔的创伤越小。手术操作者一般需要在X光机的引导下，通过体外对手柄的操作将鞘管的远端送到预定位置。由于人体内的管路迂回曲折的特性和体外到体内远距离操作的影响下，往往给操作带来较大困难，而使微创介入鞘管技术的应用范围受到限制。因此，较好的鞘管设计应该同时具备：良好的导向性、扭控性、足够的轴向与径向支撑力、以及内径与外径比率的最大化即薄壁化。When in use, the distal end of the sheath is generally inserted into the blood vessel first, and then continues to be inserted into the tube body so that the distal end reaches a predetermined position (such as a lesion), and drugs, body fluids or instruments pass through the lumen of the sheath. The larger the inner diameter of the tube body, the easier it is to transport instruments and medicines, and the smaller the outer diameter of the tube body, the less trauma to the human body lumen. The operator generally needs to send the distal end of the sheath to a predetermined position by operating the handle outside the body under the guidance of the X-ray machine. Due to the tortuous characteristics of the pipeline in the human body and the influence of long-distance operations from outside the body to the inside of the body, it often brings great difficulties to the operation, which limits the application range of the minimally invasive interventional sheath technology. Therefore, a better sheath design should have: good guiding, torsion control, sufficient axial and radial support force, and maximization of the ratio of inner diameter to outer diameter, that is, thin wall.
另外，在鞘管的设计制造过程中，会根据鞘管预期用途的不同，而将鞘管远端预塑形成不同的弯曲形状，使其与特定病变部位的解剖学形态相适应，便于鞘管远端在人体内对准该病变部位。近年来，各种形状和角度的远端预塑形介入类诊疗鞘管被陆续开发，并被投放到临床上使用。这就要求医院的仓库必须备齐所有鞘管的形状与规格，无疑增加了医院的备货型号和数量，增加了医院的使用成本。In addition, during the design and manufacture of the sheath, the distal end of the sheath will be pre-molded into different curved shapes according to the different intended uses of the sheath, so that it can adapt to the anatomical shape of the specific lesion and facilitate the sheath. The distal end is aligned with the lesion within the human body. In recent years, distal pre-shaped interventional diagnostic sheaths of various shapes and angles have been developed and put into clinical use. This requires the hospital's warehouse to prepare all the shapes and specifications of the sheath tubes, which undoubtedly increases the type and quantity of the hospital's stocking, and increases the hospital's use cost.
然而，即使开发出各种形状和角度的远端预塑形介入类诊疗鞘管，在临床使用中也频繁出现以下情况：当人体生理解剖结构出现个体化差异的情况时，即使是根据特定的人体生理解剖结构而设计的远端预塑形鞘管，也无法与个体化的生理解剖结构一一适应，进而影响手术效果。当手术过程中出现此类问题时，医生通常会将鞘管撤出并再次选择其它形状的预塑形鞘管，如此，无疑增加了病患所承担的费用，也增加了病患的管腔组织受到损伤的几率，甚至会延长患者受辐射时间。However, even though distal pre-shaped interventional diagnostic sheaths with various shapes and angles have been developed, the following situations frequently occur in clinical use: when there are individual differences in human physiological and anatomical structures, even according to specific The distal pre-shaped sheath designed for the physiological and anatomical structure of the human body cannot adapt to the individual physiological and anatomical structure one by one, thereby affecting the surgical effect. When such problems occur during the operation, the doctor usually withdraws the sheath and chooses another pre-shaped sheath again, which undoubtedly increases the cost borne by the patient and increases the patient's lumen. The probability of tissue damage may even prolong the patient's exposure to radiation.
此外，在手术现场，有时还需要根据病患的生理解剖结构，将鞘管远端通过热处理的方式，重新塑形成所需的大致形状，但这并不是每个医生都能掌握的操作技巧，而且这种重新塑形的操作会对鞘管造成损坏，比如折断、内腔丢失等。另外，鞘管通常需要借助导丝以及扩张器的帮助才可准确到达病变部位，导丝由于其柔软的特性可以较易进入到病变部位；预塑成一定形状的扩张器插入管体的内腔，鞘管和扩张器在沿着导丝前进并到达病变部位时，会受到导丝的强制作用而指向靶位置。但是，当扩张器和导丝从鞘管中抽出后，鞘管远端将无法保持原来预塑形的形状，而使鞘管的远端偏离靶位置。在此过程中，鞘管会首先给导丝一个扭力，导丝撤出后的鞘管会出现一个反弹力，上述两种作用力均会对靶位置周围的组织造成损伤。In addition, at the surgical site, sometimes it is necessary to reshape the distal end of the sheath into the desired approximate shape through heat treatment according to the patient's physiological and anatomical structure, but this is not an operation skill that every doctor can master. Moreover, this reshaping operation will cause damage to the sheath, such as fracture, loss of lumen, and the like. In addition, the sheath usually requires the help of a guide wire and a dilator to accurately reach the lesion. The guide wire can easily enter the lesion due to its soft characteristics; the dilator pre-shaped into a certain shape is inserted into the lumen of the tube body , when the sheath and dilator advance along the guide wire and reach the lesion, they will be forced by the guide wire to point to the target position. However, when the dilator and guide wire are withdrawn from the sheath, the distal end of the sheath cannot maintain the original pre-shaped shape, and the distal end of the sheath deviates from the target position. During this process, the sheath will first give a torque to the guide wire, and the sheath will have a rebound force after the guide wire is withdrawn. Both of the above two forces will cause damage to the tissues around the target position.
基于上述状况，目前开发了鞘管远端可调弯技术，可以通过体外的调节操作使鞘管远端反复的在不同角度间变化，以适应于不同的生理解剖学形态。Based on the above situation, the adjustable bending technology of the distal end of the sheath has been developed, which can repeatedly change the distal end of the sheath between different angles through external adjustment operations, so as to adapt to different physiological and anatomical shapes.
现有技术中的可调弯鞘管的手柄具有不同的特点。文献US6945956介绍的可调弯鞘管具有Y型分叉的手柄，如图1所示，其中，可调弯鞘管具有Y型分叉的手柄，该手柄包括主支82和侧枝79，牵引丝78从管体77的接近近端的侧壁穿出来，牵引丝78的近端穿过手柄侧枝79并与锁控滑块80连接，通过锁控滑块80拉动或放松牵拉丝78就能改变鞘管远端弹性段76的弯曲形状，但是必须直接用手来控制锁控滑块80。由于手柄不能进入人体，管体77插入手柄的那段长度必须留在人体以外，因此从管体77导入人体的器械也必须延长相应的长度。分叉形手柄的主支82不需要提供手握的位置，因此缩短了管体77插入手柄的那一段长度(最短可至2cm左右)，有利于匹配较短的器械。The handles of the adjustable curved sheaths of the prior art have different characteristics. The adjustable curved sheath tube introduced in document US6945956 has a Y-shaped bifurcated handle, as shown in Figure 1, wherein the adjustable curved sheath tube has a Y-shaped bifurcated handle, the handle includes a main branch 82 and a side branch 79, and the pulling wire 78 passes through the side wall close to the proximal end of the tube body 77, and the proximal end of the pulling wire 78 passes through the side branch 79 of the handle and is connected with the lock control slider 80, and the pull wire 78 can be pulled or loosened by the lock control slider 80. Change the curved shape of the elastic section 76 at the distal end of the sheath tube, but must directly control the locking slider 80 by hand. Since the handle cannot enter the human body, the length of the pipe body 77 inserted into the handle must remain outside the human body, so the instruments that are introduced into the human body from the pipe body 77 must also be extended by a corresponding length. The main branch 82 of the bifurcated handle does not need to provide a holding position, so the length of the tube body 77 inserted into the handle is shortened (the shortest can be about 2 cm), which is conducive to matching shorter instruments.
文献US7678074中介绍的可调弯鞘管具有直形手柄，如图2所示，其中，可调弯鞘管具有直形手柄，牵引丝55从管体51的接近近端的侧壁引出来并固定在一个可以滑动的锁控装置上，该锁控装置包括扳机52、固定块57、下齿块59和弹片58，下齿块59与手柄上的齿条56咬合。按下扳机52以推动下齿块59与齿条56分离，这时即可前后滑动扳机52，整个锁控装置可以沿管体51的轴向移动，牵拉或放松牵引丝55并实现调弯功能。若松开扳机52，则弹片58使下齿块59弹起，下齿块59与手柄的齿条56咬合，锁控装置被固定在手柄的预定位置，从而锁定了鞘管远端的角度，方便医生进行其他的手术操作。The adjustable curved sheath tube introduced in the document US7678074 has a straight handle, as shown in Figure 2, wherein the adjustable curved sheath tube has a straight handle, and the pulling wire 55 is drawn out from the side wall near the proximal end of the tube body 51 and It is fixed on a slidable lock control device, which includes a trigger 52, a fixed block 57, a lower tooth block 59 and a shrapnel 58, and the lower tooth block 59 is engaged with the rack 56 on the handle. Press the trigger 52 to push the lower tooth block 59 to separate from the rack 56. At this time, the trigger 52 can be slid back and forth, and the entire locking control device can move along the axial direction of the pipe body 51, pull or loosen the traction wire 55 and realize bending adjustment. Function. If the trigger 52 is released, the shrapnel 58 will make the lower tooth block 59 pop up, and the lower tooth block 59 will engage with the rack 56 of the handle, and the locking control device will be fixed at the predetermined position of the handle, thereby locking the angle of the distal end of the sheath tube, which is convenient Doctors perform other surgical procedures.
文献US7402151描述了另一种远端可调弯鞘管，其手柄采用杠杆机构来牵拉牵引丝，从而使鞘管的远端调弯。Document US7402151 describes another kind of sheath tube with adjustable distal end, the handle of which uses a lever mechanism to pull the traction wire, so that the distal end of the sheath tube can be bent.
现有技术中的可调弯鞘管均是通过手柄的操作来实现远端弯曲角度的变化。管体的大部分长度需插入人体血管或者其他管路才能到达预定的位置，操作者必须通过X射线透视来随时监测人体内的管体形状和位置以保证安全和效果，如果可调弯鞘管的操作不方便或者不够精确，则会延长病人暴露于X射线中的时间，增加患者和操作者的风险。上述现有技术中的可调弯鞘管存在以下缺陷：All the adjustable curved sheaths in the prior art realize the change of the bending angle of the distal end through the operation of the handle. Most of the length of the tube body needs to be inserted into human blood vessels or other pipelines to reach the predetermined position. The operator must monitor the shape and position of the tube body in the human body at any time through X-ray fluoroscopy to ensure safety and effectiveness. The inconvenient or inaccurate operation of the X-ray will prolong the patient's exposure to X-rays and increase the risks of the patient and the operator. The adjustable curved sheath in the above-mentioned prior art has the following defects:
文献US6945956中的可调弯鞘管的手柄缺乏位置标识和自锁装置，操作者必须一边调节手柄一边在X射线下观察管体远端角度的变化，以使管体远端指向靶位置，而且必须保持牵引丝的拉力稳定不变，才能保持鞘管远端的调弯角度不变。牵引丝的拉力一般会高达40N，用手直接拖曳就很难平稳控制，影响鞘管远端的精确定位。由于手柄既不能精确调整角度也不能锁定角度，牵引丝的拉力稍微变化，则调弯角度将发生比较大的变化，操作者需要始终小心用力才能保持角度不变，导入或者导出其他器械或者药物就很不方便，势必延长X射线辐照时间。The handle of the adjustable curved sheath tube in document US6945956 lacks position identification and self-locking device, the operator must adjust the handle while observing the change of the angle of the distal end of the tube body under X-ray, so that the distal end of the tube body points to the target position, and The pulling force of the pulling wire must be kept stable so as to keep the bending angle of the distal end of the sheath unchanged. The pulling force of the pull wire is generally as high as 40N, and it is difficult to control it smoothly by direct dragging by hand, which affects the precise positioning of the distal end of the sheath. Since the handle can neither precisely adjust the angle nor lock the angle, if the pulling force of the pulling wire changes slightly, the bending angle will change greatly. The operator needs to be careful all the time to keep the angle constant. Very inconvenient, it is bound to prolong the X-ray irradiation time.
对于文献US7678074所述的可调弯鞘管，虽然手柄具有自锁功能以固定远端调弯角度，但是直形手柄长度必须比较长(至少为10cm)，才能适于安稳手握并且剩余足够的长度来安装便于操作的按钮和滑动锁控装置，而过长的直形手柄不利于匹配输送较短的器械。此外，由于手柄中的齿合机构的齿距导致级差，管体远端的弯曲角度不能连续调节，从一个齿牙移动到相邻齿牙，就会造成管体远端弯曲角度的跳跃式变化，不便于操作。牵引丝的拉力一般会高达40N，用手指一边按下按钮一边还要移动按钮来拉动牵引丝，这种多向操作也很难平稳控制，影响鞘管远端的精确定位。鞘管进入体内后，由于弯曲迂回的管路，在行进的过程中或者到达病变部位后可能需要管体远端弯向不同的方向，那就需要轴向扭转手柄。虽然手柄的按钮位置能够提示鞘管远端的弯度角度，但是按钮位于手柄的一侧，一旦手柄转到妨碍操作者视线的一面，则不便于通过观察手柄来判断鞘管远端弯曲角度，必须开启X射线透视才能判断，此时操作者的手指也不方便控制按钮移动的距离。For the adjustable curved sheath tube described in the document US7678074, although the handle has a self-locking function to fix the distal bending angle, the length of the straight handle must be relatively long (at least 10cm) to be suitable for a stable hand and have enough remaining The length is used to install the easy-to-operate button and sliding lock control device, while the straight handle is too long to match the delivery of shorter instruments. In addition, due to the step difference caused by the tooth pitch of the toothing mechanism in the handle, the bending angle of the distal end of the tube body cannot be continuously adjusted. Moving from one tooth to the adjacent tooth will cause a jumping change in the bending angle of the distal end of the tube body , is not easy to operate. The pulling force of the pull wire is generally as high as 40N, and the pull wire must be moved while pressing the button with a finger. This multi-directional operation is also difficult to control smoothly and affects the precise positioning of the distal end of the sheath. After the sheath tube enters the body, due to the curved and circuitous pipeline, the distal end of the tube body may need to be bent in different directions during the process of advancing or after reaching the lesion site, so the handle needs to be twisted axially. Although the position of the button on the handle can indicate the bending angle of the distal end of the sheath, the button is located on one side of the handle. Once the handle is turned to the side that hinders the operator's sight, it is not convenient to judge the bending angle of the distal end of the sheath by observing the handle. Turn on the X-ray fluoroscopy to judge, and it is also inconvenient for the operator's fingers to control the moving distance of the button.
此外，现有技术中采用杠杆式手柄的可调弯鞘管，虽然降低了手部拉力而有助于操作的稳定性，但难于精确控制管体远端的角度，不能通过观察手柄来初步判断鞘管远端的弯曲角度，会延长X射线辐照时间。In addition, in the prior art, the adjustable curved sheath tube with a lever-type handle reduces the hand tension and contributes to the stability of the operation, but it is difficult to accurately control the angle of the distal end of the tube body, and a preliminary judgment cannot be made by observing the handle. The bending angle of the distal end of the sheath will prolong the X-ray irradiation time.
通过上述分析可知，现有技术中的可调弯鞘管在调整角度时的用力不均匀，连续性和准确性不好；调弯操作不方便，不利于观察和校准手柄的调弯部件；对于直形手柄的可调弯鞘管而言，直形手柄太长，不适合输送较短的器械。Through the above analysis, it can be seen that the force of the adjustable curved sheath in the prior art is uneven when adjusting the angle, and the continuity and accuracy are not good; the bending operation is inconvenient, and it is not conducive to observing and calibrating the bending parts of the handle; For adjustable curved sheaths with straight handles, straight handles are too long to deliver shorter instruments.
发明内容Contents of the invention
本发明的主要目的在于提供一种远端可调弯鞘管，在保证手柄具有尽量小的有效长度的前提下，提高鞘管远端弯曲角度控制的精确度，使操作过程方便易控，以提高手术的安全性。The main purpose of the present invention is to provide a distal adjustable bending sheath, which improves the accuracy of the control of the bending angle of the distal end of the sheath on the premise of ensuring that the handle has an effective length as small as possible, and makes the operation process convenient and easy to control. Improve the safety of surgery.
为了达到上述目的，本发明提出一种可调弯鞘管，包括管体、牵引丝和手柄，所述牵引丝能够在所述管体和所述手柄内滑动，所述管体具有近端和远端，所述管体的近端与所述手柄连接，所述手柄包括一分支，所述分支位于所述管体的近端附近的一侧，所述分支上设有一可沿该分支平移的活动部件，所述牵引丝的近端固定于所述活动部件上，所述牵引丝的远端固定于所述管体的远端；所述管体的远端附近具有一弹性段，所述活动部件在所述分支上平移时改变所述弹性段的弯曲角度，所述活动部件与所述分支之间通过螺纹连接。In order to achieve the above object, the present invention proposes an adjustable curved sheath tube, comprising a tube body, a pulling wire and a handle, the pulling wire can slide in the tube body and the handle, the tube body has a proximal end and a The distal end, the proximal end of the tubular body is connected to the handle, the handle includes a branch, the branch is located on one side near the proximal end of the tubular body, and the branch is provided with a The movable part, the proximal end of the traction wire is fixed on the movable part, the distal end of the traction wire is fixed on the distal end of the tubular body; there is an elastic section near the distal end of the tubular body, so The bending angle of the elastic section is changed when the movable part translates on the branch, and the movable part is connected with the branch through a thread.
优选地，所述活动部件在无外力作用时保持自锁状态；在外力驱动下移动时解除自锁状态。Preferably, the movable part maintains a self-locking state when there is no external force, and releases the self-locking state when it moves under the drive of an external force.
优选地，所述活动部件为锁控滑块，所述锁控滑块的单侧或双侧具有齿牙；所述分支包括侧支柱以及套在所述侧支柱上并可自由转动的旋筒，所述侧支柱设有沿其轴线的一导槽，所述锁控滑块置于所述旋筒及所述导槽内，且可沿所述导槽平移；所述旋筒的内壁上设有与所述锁控滑块的齿牙匹配的螺旋形的齿槽。Preferably, the movable part is a lock control slider, and one or both sides of the lock control slider have teeth; the branch includes a side support and a rotating cylinder that is sleeved on the side support and can rotate freely , the side pillar is provided with a guide groove along its axis, the lock control slider is placed in the rotating cylinder and the guiding groove, and can translate along the guiding groove; on the inner wall of the rotating cylinder There are spiral tooth grooves matched with the teeth of the lock control slider.
优选地，所述导槽具有一对平整的侧壁，所述锁控滑块具有一对平整的侧面，所述导槽的一对侧壁分别与所述锁控滑块的一对平整的侧面接触，所述锁控滑块可在所述导槽内滑动。Preferably, the guide groove has a pair of flat side walls, and the lock control slider has a pair of flat side walls, and the pair of side walls of the guide slot are respectively connected to the pair of flat side walls of the lock control slider. The side contact, the lock control slider can slide in the guide groove.
优选地，所述旋筒的至少一部分为透明材料制成。Preferably, at least a part of the drum is made of transparent material.
优选地，所述侧支柱的根部设置有一限位装置，所述旋筒的内径小于所述限位装置的最大直径。Preferably, the root of the side pillar is provided with a limiting device, and the inner diameter of the rotating cylinder is smaller than the maximum diameter of the limiting device.
优选地，所述活动部件为移动旋筒，所述移动旋筒的内壁设有螺纹，所述移动旋筒具有尾部；所述手柄的所述分支为螺杆，所述螺杆与所述移动旋筒的螺纹匹配，所述移动旋筒套于所述螺杆上；所述螺杆设有线腔，所述牵引丝的近端穿过所述线腔并固定于所述移动旋筒的尾部。Preferably, the movable part is a moving drum, the inner wall of the moving drum is provided with threads, and the moving drum has a tail; the branch of the handle is a screw, and the screw is connected to the moving drum The screw thread is matched, the moving drum is sleeved on the screw rod; the screw rod is provided with a wire cavity, and the proximal end of the pulling wire passes through the wire cavity and is fixed to the tail of the moving drum.
优选地，所述移动旋筒的尾部的中心设有可以自由转动的销钉，所述牵引丝的近端固定在所述销钉上。Preferably, a freely rotatable pin is provided at the center of the tail of the moving drum, and the proximal end of the pulling wire is fixed on the pin.
优选地，若所述活动部件为锁控滑块并且所述分支包括可自由转动的旋筒，则所述旋筒上设有用于指示所述锁控滑块的位置的刻度；若所述活动部件为移动旋筒并且所述分支为螺杆，则所述螺杆上设有用于指示所述移动旋筒的位置的刻度。Preferably, if the movable part is a lock control slider and the branch includes a freely rotatable cylinder, the cylinder is provided with a scale for indicating the position of the lock control slider; if the movable If the component is a moving drum and the branch is a screw, then the screw is provided with a scale for indicating the position of the moving drum.
优选地，若所述活动部件为锁控滑块并且所述分支包括可自由转动的旋筒，则所述旋筒的内壁直径D和其上的螺纹的螺距d满足关系d＜πμD，其中μ为所述锁控滑块与所述旋筒之间的接触面的最大静摩擦系数；若所述活动部件为移动旋筒并且所述分支为螺杆，则所述移动旋筒的内壁直径D和其上的螺纹的螺距d满足关系d＜πμD，其中μ为所述螺杆与所述移动旋筒之间的接触面的最大静摩擦系数。Preferably, if the movable part is a locking slider and the branch includes a freely rotatable barrel, the diameter D of the inner wall of the barrel and the pitch d of the thread on it satisfy the relationship d<πμD, where μ is the maximum static friction coefficient of the contact surface between the lock control slider and the rotary drum; if the movable part is a moving rotary drum and the branch is a screw, then the inner wall diameter D of the moving rotary drum and its The pitch d of the screw thread on the above satisfies the relationship d<πμD, where μ is the maximum static friction coefficient of the contact surface between the screw and the moving drum.
本发明提出的一种可调弯鞘管，鞘管的操作手柄采用分叉结构，能够最大限度的缩短手柄长度，保证了可调弯鞘管与其他器械的适配性，并可输送更大长度范围的其他器械，而且比现有技术中的分叉形手柄更适于抓握操作，符合人体工学要求；手柄上设置了用于调节鞘管远端弯曲角度的活动部件，利用了斜面静摩擦原理，活动部件与牵引丝连接，将牵引丝的短距离直线运动转换为易控的连续大角度旋转，活动部件与手柄其它部件之间的螺纹啮合实现了自锁功能，随时自动锁定管体远端的弯曲角度，即使牵引丝的拉力很大，轻轻转动手柄上的旋筒即可解锁，不需进行任何附加操作即可在锁定与解锁两种状态之间自由转换，不会因为用力过大而使管体抖动或弯曲角度突变，而且调节或锁定的角度可以连续平稳地改变，便于操作者进行输送其它器械或者药物的操作，提高操作的便捷和精确程度；此外，本发明进一步采用透明材料制作手柄的旋筒，采用颜色醒目的材料制作手柄的锁控滑块，并可在旋筒外表面上标识全向可视的刻度，指示锁控滑块移动的距离，用以方便判断管体的远端弹性段的弯曲角度的相对大小，即使不开启X射线，不管手柄上的旋管被旋转多大的角度，操作者都易观察到锁控滑块移动的距离以推断鞘管远端弹性段的大致弯曲角度，减少病人和医生在X射线中的暴露时间，降低危害。An adjustable curved sheath proposed by the present invention, the operating handle of the sheath adopts a bifurcated structure, which can shorten the length of the handle to the greatest extent, ensures the adaptability of the adjustable curved sheath to other instruments, and can transport larger It is more suitable for grasping operation than the bifurcated handle in the prior art, which meets the requirements of ergonomics; the handle is provided with movable parts for adjusting the bending angle of the distal end of the sheath, which utilizes the static friction of the inclined plane The principle is that the movable part is connected with the drawing wire, and the short-distance linear motion of the drawing wire is converted into an easy-to-control continuous large-angle rotation. The thread engagement between the moving part and other parts of the handle realizes the self-locking function, and the tube body is automatically locked at any time. The bending angle of the end, even if the pulling force of the traction wire is very large, it can be unlocked by gently turning the drum on the handle, and can be freely switched between the locked and unlocked states without any additional operations, and will not be caused by excessive force. Large enough to make the tube shake or bend suddenly, and the angle of adjustment or locking can be changed continuously and smoothly, which is convenient for the operator to carry out the operation of delivering other instruments or medicines, and improves the convenience and accuracy of the operation; in addition, the present invention further adopts transparent The rotary cylinder of the handle is made of materials, and the lock control slider of the handle is made of eye-catching materials, and the omnidirectional visible scale can be marked on the outer surface of the rotary cylinder to indicate the moving distance of the lock control slider, which is convenient for judging the tube The relative size of the bending angle of the distal elastic section of the body, even if the X-ray is not turned on, no matter how much the coil on the handle is rotated, the operator can easily observe the moving distance of the locking slider to infer the distal end of the sheath The approximate bending angle of the elastic section reduces the exposure time of patients and doctors to X-rays and reduces the harm.
因此，相比现有技术，本发明的可调弯鞘管可缩短手柄的有效长度、提高角度控制的精确度以及使操作过程方便易控。Therefore, compared with the prior art, the adjustable curved sheath tube of the present invention can shorten the effective length of the handle, improve the accuracy of angle control, and make the operation process convenient and easy to control.
附图说明Description of drawings
图1为现有技术中的一种可调弯鞘管的示意图；Fig. 1 is a schematic diagram of an adjustable curved sheath in the prior art;
图2为现有技术中的另一种可调弯鞘管的直形手柄的剖面结构图；Fig. 2 is a cross-sectional structure diagram of another straight handle of an adjustable curved sheath in the prior art;
图3为本发明第一实施例的可调弯鞘管的管体示意图；Fig. 3 is a schematic diagram of the tube body of the adjustable curved sheath tube according to the first embodiment of the present invention;
图4为图3所示的管体的远端弯曲时的示意图；Fig. 4 is a schematic diagram when the distal end of the tubular body shown in Fig. 3 is bent;
图5为本发明第一实施例的可调弯鞘管的示意图；Fig. 5 is a schematic diagram of the adjustable curved sheath according to the first embodiment of the present invention;
图6为图5所示的可调弯鞘管的远端弯曲后的示意图；Fig. 6 is a schematic diagram after the distal end of the adjustable curved sheath shown in Fig. 5 is bent;
图7为图5所示的可调弯鞘管的组装分解示意图；Fig. 7 is a schematic diagram of assembly and disassembly of the adjustable curved sheath shown in Fig. 5;
图8为图5所示的可调弯鞘管的手柄结构示意图；Fig. 8 is a schematic structural view of the handle of the adjustable curved sheath shown in Fig. 5;
图9为图8所示的手柄的侧支柱的剖面示意图；Fig. 9 is a schematic cross-sectional view of the side pillar of the handle shown in Fig. 8;
图10为图8所示的手柄的Y型接头的剖面示意图；Fig. 10 is a schematic cross-sectional view of the Y-shaped joint of the handle shown in Fig. 8;
图11为图8所示的手柄的Y型接头与锁控滑块装配示意图；Fig. 11 is a schematic diagram of the assembly of the Y-shaped joint of the handle shown in Fig. 8 and the lock control slider;
图12为图5所示的可调弯鞘管处于初始状态时的手柄刻度示意图；Fig. 12 is a schematic diagram of the scale of the handle when the adjustable curved sheath shown in Fig. 5 is in the initial state;
图13为图5所示的可调弯鞘管的远端弯角达60°时的手柄刻度示意图；Fig. 13 is a schematic diagram of the scale of the handle when the distal end of the adjustable curved sheath shown in Fig. 5 reaches 60°;
图14为图5所示的可调弯鞘管的远端弯成U型时的手柄刻度示意图；Fig. 14 is a schematic diagram of the scale of the handle when the distal end of the adjustable curved sheath shown in Fig. 5 is bent into a U shape;
图15为本发明第二实施例的可调弯鞘管的示意图；Fig. 15 is a schematic diagram of an adjustable curved sheath according to a second embodiment of the present invention;
图16为图15所示的可调弯鞘管的手柄在初始状态的剖面示意图；Fig. 16 is a schematic cross-sectional view of the handle of the adjustable curved sheath shown in Fig. 15 in its initial state;
图17为图15所示的可调弯鞘管的手柄在调弯状态的剖面示意图。FIG. 17 is a schematic cross-sectional view of the handle of the adjustable bending sheath shown in FIG. 15 in a bending state.
为了使本发明的技术方案更加清楚、明了，下面将结合附图作进一步详述。In order to make the technical solution of the present invention clearer and clearer, it will be further described below in conjunction with the accompanying drawings.
具体实施方式Detailed ways
本发明实施例的解决方案主要是：可调弯鞘管的手柄采用分叉结构，在手柄的分支上设置与该分支具有螺纹连接的活动部件，能够最大限度的缩短手柄的有效长度(沿着管体纵向的长度)，并可提高鞘管远端弯曲角度控制的精确度，通过自锁功能使操作过程方便易控。The solution of the embodiment of the present invention is mainly: the handle of the adjustable curved sheath tube adopts a bifurcated structure, and the branch of the handle is provided with a movable part that is threadedly connected with the branch, so that the effective length of the handle can be shortened to the greatest extent (along the The longitudinal length of the tube body), and can improve the accuracy of the control of the bending angle of the distal end of the sheath, and the self-locking function makes the operation process convenient and easy to control.
本发明提出的一种可调弯鞘管，包括管体、牵引丝和手柄，管体具有近端和远端，管体的近端与手柄连接，手柄包括一分支，该分支位于管体的一侧，管体上设有用于穿套牵引丝的细丝腔，分支上设有一可沿该分支平移的活动部件，牵引丝的近端固定于活动部件上，牵引丝的远端固定于管体的远端；管体的远端具有一弹性段，活动部件在分支上平移时可改变弹性段的弯曲角度，其中，活动部件与分支之间通过螺纹连接。且活动部件在不受外力作用时保持自锁状态；在外力驱动下移动时，可解除自锁状态。An adjustable curved sheath tube proposed by the present invention includes a tube body, a pulling wire and a handle, the tube body has a proximal end and a distal end, the proximal end of the tube body is connected to the handle, the handle includes a branch, and the branch is located at the On one side, the tube body is provided with a filament cavity for threading the pulling wire, and the branch is provided with a movable part that can translate along the branch. The proximal end of the pulling wire is fixed on the moving part, and the distal end of the pulling wire is fixed on the tube. The distal end of the body; the distal end of the pipe body has an elastic section, and the bending angle of the elastic section can be changed when the movable part translates on the branch, wherein the movable part and the branch are connected by threads. And the movable part maintains the self-locking state when it is not subjected to external force; when it moves under the drive of external force, the self-locking state can be released.
具体地，请参照图1～图14所示，其为本发明第一实施例提出的一种可调弯鞘管，本实施例中的活动部件为锁控滑块18，本实施例中的可调弯鞘管包括管体1、牵引丝4和手柄8。管体1主要用高分子材料制成，现有技术中已有其制作方法和尺寸要求，在此不再赘述。Specifically, please refer to Figures 1 to 14, which are an adjustable curved sheath proposed in the first embodiment of the present invention. The movable part in this embodiment is a locking slider 18. The adjustable curved sheath includes a tube body 1 , a pulling wire 4 and a handle 8 . The pipe body 1 is mainly made of polymer materials, and its manufacturing method and size requirements are already known in the prior art, and will not be repeated here.
如图3所示，管体1的原状为长直管。靠近所述管体1的管体的远端2，有在一定弧度范围内可自由弯曲并主动恢复原状的弹性段5。在弹性段5与管体的近端3之间为较长且较硬的硬段7。所述管体的远端2设置有一个具有光滑外形的头部6，以减少管体的远端2对人体管腔的损伤。管体1包含至少一个输送内腔和至少一个牵引丝腔道。输送内腔从管体的远端2连续贯穿到管体的近端3。牵引丝4穿过牵引丝腔道并且包埋在管体1的管壁中间，至少一个锚31埋在靠近头部6的管壁内，牵引丝4的远端固定在所述的锚31上，牵引丝4的近端从管体的近端3附近的侧壁引出来。在管体的近端3附近用力拉紧牵引丝4，实现弹性段5在一定角度范围内弯曲的功能，如图4所示。若撤销对牵引丝4的拉力，弹性段5将会在塑料自身弹性的作用下恢复至图3所示的直形原状。As shown in Figure 3, the original shape of the pipe body 1 is a long straight pipe. Near the distal end 2 of the tube body 1, there is an elastic section 5 that can be bent freely within a certain arc range and actively restores to its original shape. Between the elastic section 5 and the proximal end 3 of the tube body is a longer and harder hard section 7 . The distal end 2 of the tubular body is provided with a head 6 with a smooth shape, so as to reduce the damage of the distal end 2 of the tubular body to the lumen of the human body. The tube body 1 includes at least one delivery lumen and at least one pulling wire lumen. The delivery lumen runs continuously from the distal end 2 of the tube body to the proximal end 3 of the tube body. The pulling wire 4 passes through the pulling wire lumen and is embedded in the middle of the tube wall of the tubular body 1, at least one anchor 31 is embedded in the tube wall close to the head 6, and the distal end of the pulling wire 4 is fixed on the anchor 31 , the proximal end of the pulling wire 4 is drawn out from the side wall near the proximal end 3 of the tubular body. The traction wire 4 is tightened near the proximal end 3 of the tubular body to realize the function of bending the elastic section 5 within a certain angle range, as shown in FIG. 4 . If the pulling force on the pulling wire 4 is removed, the elastic section 5 will return to the straight original shape shown in FIG. 3 under the action of the elasticity of the plastic itself.
手柄8包括Y型接头9、旋筒12、端盖14和T型接头10，如图5所示。可选的，T型接头10与软管15和三通阀16连接，在T型接头10的近端设置一个环盖11，可以通过注射器或者其他器械连接三通阀16向管体1的输送内腔中注入液体或者抽取体液。操纵旋筒12可以带动牵引丝4并改变弹性段5的弯角，如图6所示。The handle 8 includes a Y-shaped joint 9, a rotary cylinder 12, an end cap 14 and a T-shaped joint 10, as shown in FIG. 5 . Optionally, the T-joint 10 is connected to the hose 15 and the three-way valve 16, and a ring cap 11 is provided at the proximal end of the T-joint 10, and the delivery of the three-way valve 16 to the tube body 1 can be connected through a syringe or other instruments. Fluid is injected into the lumen or body fluid is extracted. Manipulating the rotary drum 12 can drive the pulling wire 4 and change the bending angle of the elastic section 5, as shown in FIG. 6 .
Y型接头9具有一个用于安装管体1的1～2cm长的管腔，从Y型接头9的一侧延伸出长度约5～10cm且直径约0.5～1cm的侧支柱24，Y型接头9的管腔的轴线与侧支柱24的轴线之间有10°～70°的夹角。沿着侧支柱24的轴线设置一个宽度约0.2～0.5cm的导槽22，优选导槽22的长度占侧支柱24长度的30％～90％，导槽22最好是穿透侧支柱24的相对两侧而形成狭长的框状。锁控滑块18置于该22导槽内，且可沿导槽22平移。The Y-shaped joint 9 has a lumen of 1-2 cm long for installing the pipe body 1, and a side pillar 24 with a length of about 5-10 cm and a diameter of about 0.5-1 cm extends from one side of the Y-shaped joint 9. There is an included angle of 10° to 70° between the axis of the lumen of 9 and the axis of the side strut 24 . A guide groove 22 with a width of about 0.2 to 0.5 cm is set along the axis of the side pillar 24, the length of the preferred guide groove 22 accounts for 30% to 90% of the length of the side pillar 24, and the guide groove 22 is preferably to penetrate the side pillar 24 The opposite sides form a long and narrow frame shape. The lock control slider 18 is placed in the guide groove 22 and can translate along the guide groove 22 .
所述Y型接头9的管腔、侧支柱24和导槽22可一次注塑成型，如图7所示。其中，本实施例的手柄8的分支主要由上述侧支柱24及套在该侧支柱24上的旋筒12构成，旋筒12与锁控滑块18之间通过螺纹连接。The lumen, side pillars 24 and guide grooves 22 of the Y-shaped joint 9 can be injection molded at one time, as shown in FIG. 7 . Wherein, the branch of the handle 8 in this embodiment is mainly composed of the above-mentioned side pillar 24 and the rotary cylinder 12 sleeved on the side pillar 24 , and the rotary cylinder 12 is connected to the lock control slider 18 through threads.
旋筒12是一个比导槽22略长或等长的圆筒，其可以套在侧支柱24上自由转动并且将导槽22封闭。在侧支柱24的末端固定有一个端盖14，防止旋筒12脱离侧支柱24，但不妨碍旋筒12的自由转动。埋在管体1中的牵引丝4的一端从管体1的侧壁穿出后，与锁控滑块18连接。如图9所示，锁控滑块18安装于导槽22内，锁控滑块18表面具有齿牙25。旋筒12的内壁上设有与锁控滑块18的齿牙25匹配的螺旋形的齿槽26，锁控滑块18由转动的旋筒12驱动做直线往复运动，拉动与锁控滑块18连接的牵引丝4，使管体1的弹性段5的弯曲角度改变。The rotary drum 12 is a cylinder slightly longer or equal in length than the guide groove 22 , which can be sleeved on the side pillar 24 to rotate freely and close the guide groove 22 . An end cap 14 is fixed at the end of the side pillar 24 to prevent the spinner 12 from breaking away from the sidestay 24, but does not hinder the free rotation of the spinner 12. One end of the pulling wire 4 buried in the tube body 1 passes through the side wall of the tube body 1 and is connected with the lock control slider 18 . As shown in FIG. 9 , the lock control slider 18 is installed in the guide groove 22 , and the surface of the lock control slider 18 has teeth 25 . The inner wall of the rotary cylinder 12 is provided with a spiral tooth groove 26 matching with the teeth 25 of the locking control slider 18, and the locking control slider 18 is driven by the rotating rotary cylinder 12 to perform linear reciprocating motion, and the pulling and locking control slider 18 connects the pulling wire 4 to change the bending angle of the elastic section 5 of the tubular body 1.
优选地，旋筒12采用透明材料制成，比如PC、PS、PET等透明的塑料，可以透过旋筒12看到侧支柱24，并保证从不同方向都可以透过旋筒12看到旋筒12内的锁控滑块18。Preferably, the rotary drum 12 is made of transparent materials, such as transparent plastics such as PC, PS, PET, etc., the side pillars 24 can be seen through the rotary drum 12, and the rotary drum 12 can be seen from different directions. The lock control slider 18 in the cylinder 12.
可以采用染色、注塑加工或者机械加工方式，在透明的旋筒12的侧表面制作刻度17(比如点、线或其它符号)，用于指示锁控滑块18在导槽22中的位置。为了从不同方向都能观察到刻度17，每一个刻度17最好以圆周状分布于旋筒12的侧表面。Scales 17 (such as dots, lines or other symbols) can be made on the side surface of the transparent drum 12 by means of dyeing, injection molding or machining to indicate the position of the locking slide 18 in the guide groove 22 . In order to observe the scales 17 from different directions, each scale 17 is preferably distributed on the side surface of the rotary drum 12 in a circumferential shape.
优选地，当刻度17与旋筒12的齿槽26的螺距对应时，锁控滑块18移动一个刻度17，旋筒12刚好旋转一圈，使操作更方便。可选地，螺距是刻度17的间距的整数倍，可以更精确地观测锁控滑块18移动的距离。Preferably, when the scale 17 corresponds to the pitch of the tooth groove 26 of the rotary cylinder 12, the lock control slider 18 moves one scale 17, and the rotary cylinder 12 just rotates one circle, which makes the operation more convenient. Optionally, the screw pitch is an integer multiple of the pitch of the scale 17, so that the moving distance of the locking slider 18 can be observed more accurately.
锁控滑块18可以用金属(如不锈钢)或高分子材料制作。锁控滑块18的颜色异于侧支柱24的颜色。优选地，侧支柱24用浅色(如白色或浅蓝色)材料制作；锁控滑块18使用颜色较深(如红色、黑色或深蓝色)的材料制作而成，最好是硬度较高的塑料(POM，PA，ABS等)，采用机械加工或者注塑加工方式成型。The lock control slider 18 can be made of metal (such as stainless steel) or polymer material. The lock slider 18 is a different color than the side struts 24 . Preferably, the side pillars 24 are made of light-colored (such as white or light blue) materials; the lock control slider 18 is made of darker-colored (such as red, black or dark blue) materials, preferably with higher hardness Plastics (POM, PA, ABS, etc.) are formed by machining or injection molding.
T型接头10长约1～2cm，具有用于对接管体1的纵向内腔。可选的，T型接头10的内腔侧壁上横向连通软管15，所述纵向内腔与软管15构成三通式连接。图7中的管体1、Y型接头9和T型接头10可按以下方法组装在一起，将管体的近端3扩张成喇叭口19，将管体的远端2穿过Y型接头9的所述管腔，使Y型接头9的管腔近端套住喇叭口19，然后将T型接头10的远端压入Y型接头9的管腔近端，T型接头10远端的锥面20压紧喇叭口19的内表面，产生压紧力将管体1固定在Y型接头9上，使管体1的输送内腔与T型接头10的内腔对接并连通，同时起到密封防侧漏的作用。T型接头10的内腔直径最好是与管体1的输送内腔的直径一致，便于器械或者药物的通过。可选的，中部有孔的环盖11固定于T型接头10的近端，例如：环盖11与T型接头10通过卡扣或螺纹连接，并且二者之间夹紧硅胶垫片21，硅胶垫片21仅密封住T型接头10的内腔的近端。硅胶垫片21的中间有裂缝但是通常保持闭合状态，与可调弯鞘管配合的扩张器或者其他器械都可以穿过环盖11和硅胶垫片21的裂缝进入到管体1的输送内腔，当扩张器或者其他器械撤出管体1和硅胶垫片21时，硅胶垫片21因自身弹性可以恢复到原始闭合状态而起到密封的作用。The T-shaped joint 10 is about 1-2 cm long and has a longitudinal lumen for connecting the pipe body 1 . Optionally, the inner cavity side wall of the T-shaped joint 10 is horizontally connected with the flexible tube 15 , and the longitudinal inner cavity and the flexible tube 15 form a three-way connection. The tubular body 1, Y-shaped joint 9 and T-shaped joint 10 in Fig. 7 can be assembled together in the following way, the proximal end 3 of the tubular body is expanded into a bell mouth 19, and the distal end 2 of the tubular body is passed through the Y-shaped joint 9, the proximal end of the lumen of the Y-joint 9 covers the bell mouth 19, and then the far-end of the T-joint 10 is pressed into the proximal end of the lumen of the Y-joint 9, and the far-end of the T-joint 10 is The tapered surface 20 of the cone presses the inner surface of the bell mouth 19 to generate a compressive force to fix the tube body 1 on the Y-shaped joint 9, so that the delivery lumen of the tube body 1 is connected to and communicated with the inner cavity of the T-shaped joint 10, and at the same time It plays the role of sealing and preventing side leakage. The diameter of the lumen of the T-shaped joint 10 is preferably consistent with the diameter of the delivery lumen of the tube body 1 to facilitate the passage of instruments or medicines. Optionally, the ring cover 11 with a hole in the middle is fixed to the proximal end of the T-joint 10, for example: the ring cover 11 and the T-joint 10 are connected by buckles or threads, and a silicone gasket 21 is clamped between them, The silicone gasket 21 only seals the proximal end of the lumen of the T-joint 10 . There is a crack in the middle of the silicone gasket 21 but it is usually kept closed, and the dilator or other instruments matched with the adjustable curved sheath can pass through the crack of the ring cover 11 and the silicone gasket 21 and enter the delivery lumen of the tube body 1 , when the dilator or other instruments are withdrawn from the tube body 1 and the silicone gasket 21, the silicone gasket 21 can return to the original closed state due to its own elasticity and play a sealing role.
图8为Y型接头9的局部剖视图，其中，侧支柱24的根部有一个基本顺着侧支柱24轴向的线孔29，Y型接头9的管腔与线孔29的一端连通，线孔29的另一端通向导槽22，从管体1的侧壁穿出的牵引丝4则可以通过线孔29进入导槽22再固定于锁控滑块18上。在安装时，在牵引丝4的一端与锁控滑块18连接之前，先将管体1插入Y型接头9的管腔，再使牵引丝4穿过线孔29。Fig. 8 is a partial sectional view of the Y-shaped joint 9, wherein the root of the side support 24 has a line hole 29 substantially along the axial direction of the side support 24, and the lumen of the Y-shaped joint 9 communicates with one end of the line hole 29, and the line hole The other end of 29 leads to the guide groove 22, and the traction wire 4 passing through the side wall of the pipe body 1 can enter the guide groove 22 through the wire hole 29 and then be fixed on the lock control slider 18. During installation, before one end of the pulling wire 4 is connected to the lock control slider 18 , the tube body 1 is first inserted into the lumen of the Y-shaped joint 9 , and then the pulling wire 4 passes through the wire hole 29 .
侧支柱24和旋筒12的局部纵剖面如图9所示，其剖面沿着侧支柱24的中轴线并且穿过整个导槽22。如图9和图10所示，侧支柱24基本是导槽22的侧壁，锁控滑块18位于旋筒12和导槽22之内。在锁控滑块18的不同侧面上分别设置固定孔23、齿牙25和销子28。牵引丝4插入固定孔23并与销子28接触，通过销子28将牵引丝4的一端与锁控滑块18固定。销子28的固定方式可以是螺纹或其等同替换，能够承受牵引丝4的最大拉力。固定孔23最好是正对着线孔29以便于牵引丝4插入，销子28最好是垂直于固定孔23以便于固定牵引丝4。旋筒12的内壁上有螺旋形的齿槽26，所述的齿牙25与齿槽26匹配，转动旋筒12则能驱动锁控滑块18做直线往复运动，锁控滑块18拉动牵引丝4从而改变弹性段5的弯曲角度。A partial longitudinal section of the side pillar 24 and the rotary drum 12 is shown in FIG. 9 , the section is along the central axis of the side pillar 24 and passes through the entire guide groove 22 . As shown in FIG. 9 and FIG. 10 , the side pillar 24 is basically the side wall of the guide groove 22 , and the lock control slider 18 is located inside the rotary cylinder 12 and the guide groove 22 . Fixing holes 23 , teeth 25 and pins 28 are respectively provided on different sides of the lock control slider 18 . The pulling wire 4 is inserted into the fixing hole 23 and contacts the pin 28 , and one end of the pulling wire 4 is fixed to the lock control slider 18 through the pin 28 . The fixing method of the pin 28 can be screw thread or its equivalent replacement, which can withstand the maximum pulling force of the pulling wire 4 . The fixing hole 23 is preferably facing the wire hole 29 so as to facilitate the insertion of the pulling wire 4 , and the pin 28 is preferably perpendicular to the fixing hole 23 so as to facilitate fixing the pulling wire 4 . There are spiral tooth grooves 26 on the inner wall of the rotating cylinder 12, and the teeth 25 match the tooth grooves 26. Rotating the rotating cylinder 12 can drive the lock control slider 18 to do linear reciprocating motion, and the lock control slider 18 pulls the traction The wire 4 thus changes the bending angle of the elastic section 5 .
锁控滑块18最好是长方体，其一对平行的侧面分别与导槽22的侧壁接触，其另一对平行的侧面分别设置齿牙25，因此锁控滑块18可以沿着导槽22和旋筒12所共同限制的轨道方向平稳滑动且不能旋转。导槽22也可以只有一侧开口，此时导槽22的底部与锁控滑块18的底部(无齿牙)保持光滑接触，只在锁控滑块18的顶部(单侧)设置齿牙25并与齿槽26匹配，但是，前述的双侧设置的齿牙25受力平衡而更利于锁控滑块18的平稳移动。此外，在侧支柱24的根部可以设置一个限位装置，该限位装置可以为限位盘27，旋筒12的内径小于限位盘27的最大直径，转动旋筒12时，限位盘27托住旋筒12以抵抗牵引丝4的拉力，保证旋筒12的平稳自由旋转。The lock control slider 18 is preferably a cuboid, and its pair of parallel sides are respectively in contact with the side walls of the guide groove 22, and its other pair of parallel sides are respectively provided with teeth 25, so the lock control slider 18 can be moved along the guide groove. 22 and the track direction jointly limited by the rotating cylinder 12 slide smoothly and cannot rotate. The guide groove 22 also can have only one side opening, and now the bottom of the guide groove 22 keeps in smooth contact with the bottom (no teeth) of the lock control slider 18, and the teeth are only set on the top (one side) of the lock control slider 18 25 and match with the tooth groove 26, but the force balance of the teeth 25 provided on both sides is more conducive to the smooth movement of the lock control slider 18. In addition, a limit device can be set at the root of the side pillar 24, and the limit device can be a limit disc 27. The inner diameter of the rotary drum 12 is smaller than the maximum diameter of the limit disc 27. When the rotary drum 12 is rotated, the limit disc 27 The drum 12 is supported to resist the pulling force of the drawing wire 4 to ensure the smooth and free rotation of the drum 12 .
另一方面，管体1的初始形状一般是自然笔直，此时牵引丝4不能松弛而只有微弱的拉力，稍微用力拉动牵引丝4就开始改变管体的远端2附近的弹性段5的弯角，这可以通过销子28和侧支柱24上的装配孔30来实现。当锁控滑块18在导槽22的一端并且最靠近限位盘27时，刚好可以通过装配孔30来安装销子28以适当设定牵引丝4的初始状态，如图10的Y型接头9的剖面所示，从装配孔30的正面看则如图11所示。在固定牵引丝4的时候，锁控滑块18应当最靠近限位盘27，然后将牵引丝4插入固定孔23内，一边稍用力拉动牵引丝4同时保持管体1的自然笔直状态，一边使用小型工具(如螺丝刀)穿过装配孔30来安装销子28并固定牵引丝4，此时牵引丝4的拉力最小。On the other hand, the initial shape of the tubular body 1 is generally natural and straight. At this time, the pulling wire 4 can not be relaxed but only has a weak pulling force. Pulling the pulling wire 4 with a little force just begins to change the bend of the elastic section 5 near the distal end 2 of the tubular body. corners, this is accomplished through the pins 28 and mounting holes 30 in the side struts 24 . When the lock control slider 18 is at one end of the guide groove 22 and is closest to the limit plate 27, the pin 28 can be installed through the assembly hole 30 to properly set the initial state of the pulling wire 4, as shown in the Y-shaped joint in Figure 10 9, from the front of the assembly hole 30 as shown in Figure 11. When fixing the drawing wire 4, the lock control slider 18 should be closest to the limit plate 27, then insert the drawing wire 4 into the fixing hole 23, pull the drawing wire 4 with a little force while keeping the natural straight state of the tube body 1, while Use a small tool (such as a screwdriver) to pass through the assembly hole 30 to install the pin 28 and fix the pulling wire 4, and the pulling force of the pulling wire 4 is minimum at this time.
优选地，齿槽26连续延伸至旋筒12两端，导槽22延伸至限位盘27的位置，安装完毕的锁控滑块18也贴着限位盘27，此时侧支柱24可以直接插入旋筒12内，使锁控滑块18的齿牙25直接嵌入齿槽26的入口。在限位盘27抵住旋筒12之前，锁控滑块18不会接触齿槽26，也就不会阻碍旋筒12相对侧支柱24的移动，安装完成后如图12所示。Preferably, the tooth grooves 26 extend continuously to the two ends of the rotary cylinder 12, the guide grooves 22 extend to the position of the limit plate 27, and the installed lock control slider 18 is also attached to the limit plate 27. At this time, the side pillar 24 can be directly Insert it into the rotating cylinder 12 so that the teeth 25 of the lock control slider 18 are directly inserted into the entrance of the tooth groove 26 . Before the limit disc 27 is against the rotating cylinder 12, the lock control slider 18 will not contact the tooth groove 26, and will not hinder the movement of the opposite side pillar 24 of the rotating cylinder 12, as shown in FIG. 12 after installation.
操作者仅需旋转旋筒12，此时齿槽26与锁控滑块18的齿牙25保持咬合，锁控滑块18在导槽22的限制下只沿旋筒12的轴向移动，旋筒12两端分别被限位盘27和端盖14限制，齿槽26随着旋筒12转动但无法沿旋筒12的轴向平移，也就是说，齿牙25沿旋筒12轴线平移而齿槽26绕旋筒12轴线转动，齿牙25相对于齿槽26做螺旋形滑动，旋筒12的内壁直径D和齿槽26的螺距d决定了齿槽26(及旋筒12)转动角度与齿牙25(及锁控滑块18)平移量之间的同步关系。当旋筒12做正向转动时，锁控滑块18从限位盘27移向端盖14，牵引丝4中的拉力增大，迫使弹性段5的弯角增大。锁控滑块18离开限位盘27越远，则弹性段5的弯角越大。当旋筒12做反向转动时，锁控滑块18向限位盘27返回，牵引丝4中的拉力减小，由于弹性段5的弹性回复力，弹性段5的弯角减小。锁控滑块18回到限位盘27，则弹性段5自动恢复初始的自然状态。The operator only needs to rotate the rotary drum 12, at this moment, the teeth grooves 26 and the teeth 25 of the lock control slider 18 keep engaging, and the lock control slider 18 only moves along the axial direction of the rotary drum 12 under the restriction of the guide groove 22, and the rotation The two ends of the barrel 12 are respectively limited by the limit plate 27 and the end cap 14, the tooth groove 26 rotates with the barrel 12 but cannot translate along the axial direction of the barrel 12, that is to say, the teeth 25 translate along the axis of the barrel 12 The tooth groove 26 rotates around the axis of the rotary cylinder 12, and the teeth 25 slide in a spiral shape relative to the tooth groove 26. The inner wall diameter D of the rotary cylinder 12 and the pitch d of the tooth groove 26 determine the rotation angle of the tooth groove 26 (and the rotary cylinder 12). Synchronous relationship with the translational amount of the tooth 25 (and the lock control slider 18). When the rotary drum 12 rotates in the forward direction, the lock control slider 18 moves from the limit plate 27 to the end cover 14, and the pulling force in the pulling wire 4 increases, forcing the bending angle of the elastic section 5 to increase. The farther the lock control slider 18 is away from the limit plate 27, the larger the bending angle of the elastic section 5 is. When the rotary drum 12 rotates in the opposite direction, the lock control slider 18 returns to the limit disc 27, the pulling force in the pulling wire 4 decreases, and the bending angle of the elastic segment 5 decreases due to the elastic restoring force of the elastic segment 5. When the lock control slider 18 returns to the limit plate 27, the elastic section 5 automatically returns to its original natural state.
根据公知的斜面摩擦静力学分析，对于齿牙25与齿槽26之间的最大静摩擦系数μ，只要旋筒12的内径D和齿槽26的螺距d满足物理关系式：d＜πμD，则牵引丝4中的拉力会使齿牙25与齿槽26之间保持静摩擦状态，此时，旋筒12和锁控滑块18都静止平衡，这就是自锁状态。当管体的远端2弯曲到所需的状态时，操作者可以直接松开旋筒12，而管体的远端2附近的弯角保持不变，不需要其它辅助动作就能实现自锁功能，这非常便于医生同时操作其它配套的器械。当外力转动旋筒12，打破齿牙25与齿槽26之间的静摩擦平衡，就能改变管体的远端2附近的弯角。不受外力的旋筒12在任意位置都有自锁功能，而且转动旋筒12就能随时解除自锁，这给手术操作带来很大的便利。According to the known static analysis of inclined plane friction, for the maximum static friction coefficient μ between the tooth 25 and the tooth groove 26, as long as the inner diameter D of the rotary drum 12 and the pitch d of the tooth groove 26 satisfy the physical relation: d<πμD, the traction The tension in the wire 4 will keep the state of static friction between the teeth 25 and the alveolar 26. At this moment, both the rotating cylinder 12 and the locking slider 18 are in static equilibrium, which is the self-locking state. When the distal end 2 of the tubular body is bent to the desired state, the operator can directly loosen the rotary cylinder 12, while the bending angle near the distal end 2 of the tubular body remains unchanged, and self-locking can be realized without other auxiliary actions Function, which is very convenient for doctors to operate other supporting equipment at the same time. When the rotating cylinder 12 is rotated by external force, the static friction balance between the teeth 25 and the tooth grooves 26 is broken, and the bending angle near the distal end 2 of the pipe body can be changed. The rotary drum 12 free from external force has a self-locking function at any position, and the self-locking function can be released at any time by rotating the rotary drum 12, which brings great convenience to the operation.
旋筒12上的每一个刻度17分别对应锁控滑块18的一个位置，因此刻度17与管体的远端2附近的弹性段5的弯曲角度形成一定的对应关系，从而通过旋筒12上的刻度17能够大致判断管体的远端2附近的弹性段5的调弯角度。优选地，管体1的弹性段5具有初始形状时，锁控滑块18位于刻度17的原点，在牵引丝4中刚好产生微弱的张力。当弹性段5的弯曲程度调节到合适状态，记下此时锁控滑块18对应的刻度17，就可以继续调整鞘管，只要鞘管的其它部分的位置和形状不变，以后将锁控滑块18移回至原来记下的刻度17，就能使弹性段5的弯曲程度回到合适状态。Each scale 17 on the rotary drum 12 corresponds to a position of the lock control slider 18 respectively, so the scale 17 forms a certain corresponding relationship with the bending angle of the elastic section 5 near the distal end 2 of the tube body, so that through the rotary drum 12 The scale 17 can roughly judge the bending angle of the elastic section 5 near the distal end 2 of the tubular body. Preferably, when the elastic section 5 of the tubular body 1 has an initial shape, the lock control slider 18 is located at the origin of the scale 17 , and a weak tension is just generated in the pulling wire 4 . When the bending degree of the elastic section 5 is adjusted to a suitable state, write down the scale 17 corresponding to the lock control slider 18 at this time, and then continue to adjust the sheath tube. The slide block 18 moves back to the original marked scale 17, and the bending degree of the elastic section 5 can be returned to a proper state.
螺距d的优选范围为0.5～5mm。如果管体1较长或其内径较大时，或者弹性段5的弯角变化范围很大时，可以选择相对较大的螺距d，这样旋筒12就不需要转动太多的圈数，然后选择合适的旋筒内径D以满足静摩擦的要求。如果管体1较短或其内径较小时，或者弹性段5的弯角变化范围较小时，可以选择相对较小的螺距d和旋筒内径D，以提高弯角的可控精度，这时，通过旋筒12转过的圈数来判断弹性段5的调弯角度会更方便。The preferred range of pitch d is 0.5-5mm. If the pipe body 1 is long or its internal diameter is large, or when the bending angle of the elastic section 5 varies greatly, a relatively large pitch d can be selected, so that the rotary drum 12 does not need to rotate too many turns, and then Select the appropriate drum inner diameter D to meet the requirements of static friction. If the pipe body 1 is short or its inner diameter is small, or when the bending angle of the elastic section 5 varies in a small range, a relatively small pitch d and the inner diameter of the drum D can be selected to improve the controllable precision of the bending angle. At this time, It will be more convenient to judge the bending angle of the elastic section 5 by the number of turns that the rotary drum 12 has turned.
例如，当管体1的内径为3mm且长度为1000mm，弹性段5长度为50mm时，选择螺距d为2mm，使锁控滑块18相对于刻度17的初始值移动约6mm，旋筒12从初始位置旋转约三圈，则管体的远端2相对于管体1偏转60°，如图13所示。若锁控滑块18相对于刻度17的初始值移动约10mm，旋筒12从初始位置旋转约五圈，则管体的远端2与管体1的夹角变为0°，即弯角变化了180°，弹性段5弯曲成U形，如图14所示。这样，可以给操作者一个明确的指示信息，方便了手术操作，也减少了X辐射危害。当管体的远端2在人体内被定位到靶区附近时，操作者转动旋筒12并观察旋转圈数或锁控滑块18对应的刻度17，不需要开启X射线透视人体内的管体的远端2，就可以将管体的远端2调节到预先用X射线校对的位置。For example, when the inner diameter of the pipe body 1 is 3 mm and the length is 1000 mm, and the length of the elastic section 5 is 50 mm, the pitch d is selected to be 2 mm, so that the lock control slider 18 moves about 6 mm relative to the initial value of the scale 17, and the rotary cylinder 12 moves from When the initial position is rotated about three times, the distal end 2 of the tube body is deflected by 60° relative to the tube body 1 , as shown in FIG. 13 . If the lock control slider 18 moves about 10 mm relative to the initial value of the scale 17, and the rotary cylinder 12 rotates about five times from the initial position, the angle between the distal end 2 of the tube body and the tube body 1 becomes 0°, that is, the bending angle Changed by 180°, the elastic section 5 is bent into a U shape, as shown in FIG. 14 . In this way, a clear instruction information can be given to the operator, which facilitates the operation and reduces the hazards of X-radiation. When the distal end 2 of the tube body is positioned near the target area in the human body, the operator rotates the rotary drum 12 and observes the number of rotations or the scale 17 corresponding to the locking slider 18, without opening the X-ray to see through the tube in the human body. The far-end 2 of body just can adjust the far-end 2 of tubular body to the position that checks with X-ray in advance.
本实施例具有以下有益效果：可调弯鞘管的操作手柄8采用分叉结构，能够最大限度的缩短手柄8的有效长度，保证了可调弯鞘管与其他器械的适配性，比直形手柄更适于输送一些较短的其他器械，而且比现有技术中的分叉形手柄更适于抓握操作，符合人体工学要求；手柄8上设置了用于调节弹性段5的弯曲角度的锁控滑块18和旋筒12，将牵引丝4的短距离直线运动转换为任意手指易控的连续大角度旋转，不仅能显著减小手动操作的用力，而且具有角度调节的自锁功能，具体而言，利用斜面静摩擦原理，锁控滑块18与牵引丝4连接，锁控滑块18与旋筒12之间的螺纹啮合实现该自锁功能，随时自动锁定弹性段5的弯曲角度，即使牵引丝4的拉力很大，轻轻转动旋筒12即可解锁，不需进行任何附加操作即可在锁定与解锁两种状态之间自由转换，不会因为用力过大而使管体1抖动或使弹性段5的弯曲角度突变，而且调节或锁定的弹性段5的弯曲角度可以连续平稳地改变，便于操作者进行输送其它器械或者药物的操作，提高操作的便捷和精确程度；此外，本实施例进一步采用透明材料制作手柄8的旋筒12，采用颜色醒目的材料制作手柄8的锁控滑块18，并可在旋筒12外表面上标识全向可视的刻度17以指示锁控滑块18移动的距离，用以方便判断弹性段5的弯曲角度的相对大小，即使不开启X射线，不管手柄8被扭转到哪个方向，操作者都易观察到锁控滑块18移动的距离以推断弹性段5的大致弯曲角度，减少病人和医生在X射线中的暴露时间，降低危害。This embodiment has the following beneficial effects: the operating handle 8 of the adjustable curved sheath adopts a bifurcated structure, which can shorten the effective length of the handle 8 to the greatest extent, and ensures the adaptability of the adjustable curved sheath to other instruments. Shaped handle is more suitable for transporting some shorter other instruments, and is more suitable for grasping operation than the bifurcated handle in the prior art, which meets the ergonomic requirements; the handle 8 is provided with a bending angle for adjusting the elastic section 5 The lock control slider 18 and the rotary drum 12 convert the short-distance linear motion of the pulling wire 4 into continuous large-angle rotation that is easy to control with any finger, which not only can significantly reduce the manual operation force, but also has a self-locking function for angle adjustment , specifically, using the principle of static friction on an inclined plane, the lock control slider 18 is connected to the traction wire 4, and the threaded engagement between the lock control slider 18 and the rotary cylinder 12 realizes the self-locking function, and automatically locks the bending angle of the elastic section 5 at any time , even if the pulling force of the pulling wire 4 is very large, it can be unlocked by gently turning the rotary drum 12, and can be freely switched between the locked and unlocked states without any additional operations, and the tube body will not be damaged due to excessive force. 1 Shake or make the bending angle of the elastic section 5 change suddenly, and the bending angle of the adjusted or locked elastic section 5 can be changed continuously and smoothly, which is convenient for the operator to transport other devices or medicines, and improves the convenience and accuracy of the operation; in addition , the present embodiment further adopts transparent material to make the rotary cylinder 12 of the handle 8, adopts the material with eye-catching color to make the lock control slider 18 of the handle 8, and can mark the omnidirectional visible scale 17 on the outer surface of the rotary cylinder 12 to indicate The moving distance of the locking slider 18 is used to conveniently judge the relative size of the bending angle of the elastic section 5. Even if the X-ray is not turned on, no matter which direction the handle 8 is twisted, the operator can easily observe the movement of the locking slider 18. The approximate bending angle of the elastic section 5 can be deduced to reduce the exposure time of patients and doctors to X-rays and reduce the harm.
请参照图15～图17所示，本发明第二实施例提出的一种可调弯鞘管，本实施例中的活动部件为移动旋筒35，该移动旋筒35具有尾部，本实施例中手柄8的分支的主要部件为螺杆37。Please refer to Figures 15 to 17, an adjustable curved sheath proposed in the second embodiment of the present invention, the movable part in this embodiment is a moving drum 35, and the moving drum 35 has a tail. The main part of the branch of the middle handle 8 is the screw rod 37 .
本实施例与上述第一实施例基本类似，主要不同之处在于其手柄8的结构。本实施例中，Y型接头34的一侧是螺杆37，在移动旋筒35的内壁设置螺纹以套在螺杆37上，当移动旋筒35转动时就沿轴向移动而使管体1弯曲，如图15所示。为了使移动旋筒35绷紧牵引丝4以带动管体1弯曲，沿螺杆37的轴线设置一个线腔32，牵引丝4的近端穿过线腔32并固定于移动旋筒35的底部，移动旋筒35和螺杆37在起始位置的纵剖面如图16所示。This embodiment is basically similar to the above-mentioned first embodiment, the main difference lies in the structure of the handle 8 . In this embodiment, one side of the Y-shaped joint 34 is a screw rod 37, and the inner wall of the moving drum 35 is threaded to fit on the screw rod 37. When the moving drum 35 rotates, it moves in the axial direction to make the pipe body 1 bend. , as shown in Figure 15. In order to make the moving drum 35 tighten the pulling wire 4 to drive the tubular body 1 to bend, a wire chamber 32 is arranged along the axis of the screw rod 37, the proximal end of the pulling wire 4 passes through the wire chamber 32 and is fixed on the bottom of the moving drum 35, The longitudinal section of the moving drum 35 and the screw rod 37 at the starting position is shown in FIG. 16 .
优选地，移动旋筒35的尾部具有一个底面，在所述底面的中心设置一个可自由转动的销钉33，牵引丝4的近端固定在销钉33上，这样不仅便于组装，当移动旋筒35转动而牵引丝4的近端和销钉33都不转动，还可以避免牵引丝4在很大张力下被扭转而绞断。Preferably, the tail portion of the moving drum 35 has a bottom surface, a freely rotatable pin 33 is arranged at the center of the bottom surface, and the proximal end of the pulling wire 4 is fixed on the pin 33, which is not only convenient for assembling, but when the moving drum 35 Rotate without the proximal end of the pulling wire 4 and the pin 33 not rotating, which can also prevent the pulling wire 4 from being twisted and broken under a large tension.
优选地，去掉螺杆37侧面的一小部分螺纹，形成图16所示的平坦而狭长的刻度平面36，沿轴向从限位盘27开始标出一系列刻度17，用于指示移动旋筒35的顶端位置。Preferably, a small part of thread on the side of the screw rod 37 is removed to form a flat and narrow scale plane 36 as shown in FIG. top position.
优选地，可以在螺杆37的轴对称位置设置多个相同的刻度平面36，以便从不同方向都看得到刻度17，同时也不影响移动旋筒35与螺杆37的稳定配合。Preferably, a plurality of identical scale planes 36 can be provided at the axially symmetrical positions of the screw 37 , so that the scale 17 can be seen from different directions without affecting the stable cooperation between the moving drum 35 and the screw 37 .
如果需要加大管体1的弯角，则需用力拉动牵引丝4，也就是移动旋筒35要远离限位盘27，暴露出来的刻度17可显示移动旋筒35的顶端位置并可用于推测管体1的弯角，因此移动旋筒35不必用透明的材质，如图17所示。If it is necessary to increase the bending angle of the pipe body 1, the pulling wire 4 needs to be pulled hard, that is, the moving drum 35 should be far away from the limit plate 27, and the exposed scale 17 can display the top position of the moving drum 35 and can be used for speculation The bend of the pipe body 1, therefore the moving drum 35 needn't be made of transparent material, as shown in Figure 17.
如果操作者需要扭转手柄8来调整管体1的方位，由于从多个方向上均能观察到刻度17和移动旋筒35的平移距离，因此可便于判断弹性段5的弯曲角度。If the operator needs to twist the handle 8 to adjust the orientation of the tube body 1, since the translation distance of the scale 17 and the moving cylinder 35 can be observed from multiple directions, it is convenient to judge the bending angle of the elastic section 5.
需要说明的是，前述第一实施例中的锁控滑块18的齿牙25采用的原理和设计要求，也适用于螺杆37上的齿牙25。通过螺杆37上的齿牙25与移动旋筒35内壁的齿槽26之间的静摩擦，实现移动旋筒35的自锁而保持管体1的弯角不变，再稍用力转动又可解除自锁状态。当移动旋筒35往回转时，由于管体1的弹性恢复力，牵引丝4也往回退，可调弯鞘管会自动回直。It should be noted that the principles and design requirements adopted by the teeth 25 of the lock control slider 18 in the aforementioned first embodiment are also applicable to the teeth 25 on the screw rod 37 . Through the static friction between the teeth 25 on the screw rod 37 and the tooth grooves 26 on the inner wall of the moving drum 35, the self-locking of the moving drum 35 is realized and the bending angle of the pipe body 1 is kept constant, and the self-locking can be released by turning it a little harder. lock state. When the moving drum 35 turns back, due to the elastic restoring force of the tube body 1, the pulling wire 4 also retreats, and the adjustable curved sheath tube will automatically return to straight.
与现有技术相比，本发明实施例的可调弯鞘管同时实现多种技术效果：缩短手柄8的有效长度、提高角度控制的精确度和使操作过程方便易控。具体如下，Compared with the prior art, the adjustable curved sheath of the embodiment of the present invention achieves multiple technical effects at the same time: shortening the effective length of the handle 8, improving the accuracy of angle control and making the operation process convenient and easy to control. details as follows,
第一，因为Y型的手柄8的牵引调节机构被斜向置于管体1的侧面，相对于直形手柄，Y型的手柄8的纵向部分可以很短，所以本发明的可调弯鞘管能输送的辅助器械可具有更大的长度范围；First, because the traction adjustment mechanism of the Y-shaped handle 8 is obliquely placed on the side of the tubular body 1, relative to the straight handle, the longitudinal part of the Y-shaped handle 8 can be very short, so the adjustable curved sheath of the present invention Auxiliary devices that can be delivered by tubes can have a greater range of lengths;
第二，手柄8利用了斜面静摩擦原理，活动部件与牵引丝4连接，活动部件与手柄8上的其它部件之间的螺纹啮合实现了自锁功能，随时自动锁定管体的远端2附近的弹性段5的弯曲角度，即使牵引丝4的拉力很大，轻轻转动旋筒12或移动旋筒35即可解锁，不需进行任何附加操作即可在锁定与解锁这两种状态之间自由转换，不会因为用力过大而使管体1抖动或弹性段5的弯曲角度突变，而且调节或锁定的角度可以连续平稳地改变，便于操作者进行输送其它器械或者药物的操作，提高操作的便捷和精确程度；Second, the handle 8 utilizes the principle of inclined surface static friction, the movable part is connected with the traction wire 4, and the threaded engagement between the movable part and other parts on the handle 8 realizes the self-locking function, and automatically locks near the far end 2 of the pipe body at any time. The bending angle of the elastic section 5, even if the pulling force of the traction wire 4 is very large, it can be unlocked by gently rotating the rotary drum 12 or moving the rotary drum 35, and can freely switch between the locked and unlocked states without any additional operations. Switching will not cause the tube body 1 to vibrate or the bending angle of the elastic section 5 to change suddenly due to excessive force, and the angle of adjustment or locking can be changed continuously and smoothly, which is convenient for the operator to transport other devices or medicines, and improves the operating efficiency. Convenience and accuracy;
第三，在手柄8的分支上设置了刻度17，即使扭转手柄8的朝向，从不同方向都容易观察活动部件的实际位置和移动距离，以在暂时关闭X射线时推测管体的远端2附近的弹性段5的弯曲角度，减少病人和医生在X射线中的暴露时间，降低危害。Third, scales 17 are provided on the branches of the handle 8. Even if the orientation of the handle 8 is reversed, it is easy to observe the actual position and moving distance of the movable parts from different directions, so as to estimate the distal end 2 of the tube when the X-ray is temporarily turned off. The bending angle of the nearby elastic segment 5 reduces the exposure time of patients and doctors in X-rays and reduces the harm.
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本发明的专利保护范围内。The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all included in the scope of patent protection of the present invention in the same way.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210030145.7ACN102580225B (en) | 2012-02-10 | 2012-02-10 | adjustable curved sheath |
| PCT/CN2013/071106WO2013117138A1 (en) | 2012-02-10 | 2013-01-30 | Sheathing canal that can be adjusted so as to be bent |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210030145.7ACN102580225B (en) | 2012-02-10 | 2012-02-10 | adjustable curved sheath |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410099311.8ADivisionCN103877660A (en) | 2012-02-10 | 2012-02-10 | Adjustable bent sheath |
| Publication Number | Publication Date |
|---|---|
| CN102580225A CN102580225A (en) | 2012-07-18 |
| CN102580225Btrue CN102580225B (en) | 2014-07-30 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210030145.7AActiveCN102580225B (en) | 2012-02-10 | 2012-02-10 | adjustable curved sheath |
| Country | Link |
|---|---|
| CN (1) | CN102580225B (en) |
| WO (1) | WO2013117138A1 (en) |
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| CN1093933A (en)* | 1992-11-16 | 1994-10-26 | 鲍兹·阿夫托尔 | Catheter deflection control |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information | Inventor after:Fu Weiguo Inventor after:Zhang Tingchao Inventor after:Chen Yilong Inventor before:Zhang Tingchao Inventor before:Chen Yilong Inventor before:Fu Weiguo | |
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right | Effective date of registration:20221021 Address after:No.136, Medical College Road, Xuhui District, Shanghai 200030 Patentee after:ZHONGSHAN HOSPITAL, FUDAN University Patentee after:LIFETECH SCIENTIFIC (SHENZHEN) Co.,Ltd. Address before:F1-3, Saiba Scientific Research Building, Langshan Second Road, Nanshan District, Shenzhen, Guangdong 518000 Patentee before:LIFETECH SCIENTIFIC (SHENZHEN) Co.,Ltd. |