WO2024140219A1 - 输送器 - Google Patents

输送器 Download PDF

Info

Publication number
WO2024140219A1
WO2024140219A1 PCT/CN2023/138480 CN2023138480W WO2024140219A1 WO 2024140219 A1 WO2024140219 A1 WO 2024140219A1 CN 2023138480 W CN2023138480 W CN 2023138480W WO 2024140219 A1 WO2024140219 A1 WO 2024140219A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
proximal end
sheath tube
distal end
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/138480
Other languages
English (en)
French (fr)
Inventor
吕成
刘奎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lifetech Scientific Shenzhen Co Ltd
Original Assignee
Lifetech Scientific Shenzhen Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lifetech Scientific Shenzhen Co Ltd filed Critical Lifetech Scientific Shenzhen Co Ltd
Priority to EP23910149.6A priority Critical patent/EP4643828A4/en
Publication of WO2024140219A1 publication Critical patent/WO2024140219A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • 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
    • A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
    • A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
    • A—HUMAN NECESSITIES
    • 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
    • A—HUMAN NECESSITIES
    • 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
    • A61F2/9517—Instruments specially adapted for placement or removal of stents or stent-grafts handle assemblies therefor
    • A—HUMAN NECESSITIES
    • 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
    • A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
    • A—HUMAN NECESSITIES
    • 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
    • A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
    • A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
    • A61F2002/9665—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod with additional retaining means

Definitions

  • the tooth block’s interaction surface is reduced when it passes through the catheter gap, which makes it easy for the teeth to slip during slow release. This will make slow release impossible, seriously affecting the doctor’s operation.
  • the present invention provides a conveyor, comprising a sheath core component and a conveying handle, wherein the sheath core component comprises a sheath tube and a sheath tube joint connected to the proximal end of the sheath tube, and the conveying handle comprises a shell, a screw and a tooth block located in the shell, and a locking device connected to the tooth block;
  • the screw comprises an upper screw and a lower screw arranged in radial engagement, and both sides of the upper screw and the lower screw are provided with spacing grooves extending in the axial direction at the engagement positions on both sides, the proximal end of the sheath tube extends into the screw of the conveying handle, and both sides of the sheath tube joint in the radial direction extend out from the spacing grooves on both sides respectively;
  • the tooth block is provided with at least two, to At least two tooth blocks are spaced apart along the circumferential direction of the screw, and the tooth blocks have a first state of engagement with the external thread outside the screw and a second
  • three tooth blocks are provided, and the three tooth blocks are spaced apart along the circumferential direction of the screw rod, so that at least one tooth block is always not opposite to the spacing groove.
  • the locking device also includes a spring top sleeve axially arranged relative to the proximal end of the screw sleeve, and the proximal surface of the spring top sleeve radially extends out to form an annular blocking surface.
  • the locking device also includes a return spring sleeved on the screw sleeve and the spring top sleeve, one end of the return spring abuts against the proximal surface of the trigger sleeve, and the other end abuts against the blocking surface.
  • the return spring is used to provide elastic force to return the retracted trigger sleeve to an initial first state.
  • the elastic member is sleeved on the screw rod, and the proximal end of the elastic member abuts against the blocking platform located at the proximal end, and the distal end of the elastic member abuts against the proximal end surface of the sheath tube connector extending out of the spacing groove.
  • the conveyor of the present invention effectively ensures the effective meshing area between the tooth blocks and the screw by making the multiple tooth blocks not simultaneously face the spacing grooves of the screw, thereby ensuring the stability of the device in use. Furthermore, an elastic member is provided on the proximal side of the sheath tube joint, and the sheath tube joint can move toward the distal end under the elastic force of the elastic member, thereby compensating for the shortening of the sheath tube joint due to the treatment, and preventing the head from having a step difference when the sheath tube is shortened.
  • FIG5 is a schematic diagram of a partial structure of a conveyor according to an exemplary embodiment of the present invention when multiple tooth blocks are in different axial positions;
  • FIG7 is a schematic diagram of the layout when the sheath tube is shortened
  • FIG. 8 is a partial cross-sectional view of another exemplary arrangement of elastic members in a conveyor according to the present invention.
  • first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as “first”, “second” and other numerical terms do not imply a sequence or order when used herein. Therefore, the following discussion A first element, component, region, layer or section could be termed a second element, component, region, layer or section without departing from the teachings of example embodiments.
  • the housing 21 includes a fixed handle 211 and a movable handle 212 which are arranged opposite to each other in the axial direction.
  • the movable handle 212 is located at the proximal side.
  • the fixed handle 211 and the movable handle 212 are both structures which are matched with each other from top to bottom.
  • the fixed handle 211 includes a matched upper fixed portion 211a.
  • the movable handle 212 includes an upper movable part 212a and a lower movable part 212b.
  • the screw rod 22 passes through the fixed handle 211 and the movable handle 212.
  • the tooth block 23 and the sheath tube connector 12 are located in the movable handle 212.
  • the two tooth blocks 23 are arranged asymmetrically.
  • the other one must not be opposite.
  • the three tooth blocks 23 are distributed at equal angles in the circumference, so that at least two tooth blocks 23 are always not opposite to the spacing groove 22a, that is, when one of the tooth blocks 23 is opposite to the spacing groove 22a arranged symmetrically, the other two are necessarily not opposite to the spacing groove 22a, and the two tooth blocks 23 are meshed with the external thread of the screw rod 22, further increasing the meshing area, avoiding slipping teeth and improving the overall stability.
  • the locking device is used to keep the tooth block 23 in a first meshed state without the action of external force, and to put the tooth block 23 in a second disengaged state under the action of external force.
  • the tooth block 23 is placed between the screw sleeve 24 and the trigger sleeve 25, and in a first state, the distal end of the tooth block 23 passes through the first through hole 24a and engages with the external thread on the screw rod 22, and the proximal end of the tooth block 23 is suspended relative to the distal end and extends into the second through hole 25a; in a second state, the trigger sleeve 25 is retreated toward the proximal end under the action of an external force, and the retreated trigger sleeve 25 presses the proximal end of the tooth block 23 so that the distal end of the tooth block 23 is tilted and suspended, thereby disengaging from the meshing with the screw rod 22.
  • the locking device further comprises a spring top sleeve 27 axially arranged at the proximal end of the screw sleeve 24, the proximal end surface of the spring top sleeve 27 radially extending to form an annular blocking surface 27a, and the locking device further comprises a return spring 26 sleeved on the screw sleeve 24 and the spring top sleeve 27, one end of the return spring 26 abuts against the proximal end surface of the trigger sleeve 25, and the other end abuts against the blocking surface 27a, and the return spring 26 is used to provide elastic force to return the retreated trigger sleeve 25 to the initial first state.
  • a plurality of V-shaped grooves are concavely provided on the distal end surface of the spring top sleeve 27.
  • the trigger sleeve 25 moves backward, driving the tooth block 23 away from the center.
  • the movable handle 212 can move linearly on the screw rod 22; no force is applied to the trigger sleeve 25, and the return spring 26 applies a forward force to the trigger sleeve 25, and the tooth block 23 is engaged with the screw rod 22.
  • the movable handle 212 and the screw rod 22 can only rotate spirally but not linearly.
  • a connecting protrusion 25b is protruding from the outer wall of the trigger sleeve 25
  • a through hole (not shown) is provided on the housing 21, and the locking device also includes a trigger 28.
  • the connecting protrusion 25b passes through the through hole and is relatively fixed to the trigger 28. Under the action of external force, the trigger 28 drives the trigger sleeve 25 to retreat axially.
  • the treatment in this embodiment refers to any process that can cause the sheath 11 to shorten, such as sterilization.
  • the distal end face of the sheath 11 abuts against the tip head 13 of the inner sheath core, and the distal end of the sheath connector 12 is a certain distance h1 from the distal blocking platform, the distance h1 is greater than zero, and the elastic member 30 is in a compressed state, wherein the sheath 11 resists bending under the elastic abutment of the elastic member 30, that is, the elastic force provided by the elastic member 30 cannot cause the sheath 11 to bend; after the conveyor 100 is treated, the elastic member 30 pushes the sheath connector 12 toward the distal end until the distal end face of the sheath connector 12 abuts against the tip head 13 again, at this time, since both the sheath connector 12 and the sheath 11 move toward the distal end, h1 is reduced or h1 is reduced to zero.
  • the conveyor 100 also includes a stopper 40, a limit block is protruding from the inner wall of the shell 21, and two limit blocks are axially spaced apart, the two limit blocks are 2123 and 2124, and the stopper 40 is axially upper limited between the two limit blocks 2123 and 2124.
  • the stopper 40 extends into the screw 22 through the spacing groove 22a, and the elastic member 30 is disposed in the screw 22.
  • the proximal end of the elastic member 30 disposed in the screw 22 abuts against the stopper 40, and the distal end of the elastic member 30 abuts against the proximal end surface of the sheath connector 12.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Feeding And Watering For Cattle Raising And Animal Husbandry (AREA)
  • Surgical Instruments (AREA)

Abstract

一种输送器（100），包括鞘芯组件（10）及输送手柄（20），鞘芯组件（10）包括鞘管（11）及连接于鞘管（11）近端的鞘管接头（12），输送手柄（20）包括壳体（21）、位于壳体（21）内的螺杆（22）和牙块（23）、以及与牙块（23）连接的锁紧装置；螺杆（22）包括径向对合设置的上螺杆（221a）和下螺杆（221b），上螺杆（221a）和下螺杆（221b）的两侧对合处均设有沿轴向方向延伸的间隔槽（22a），鞘管（11）的近端伸入输送手柄（20）的螺杆（22）内且鞘管接头（12）径向上的两侧分别自两侧的间隔槽（22a）伸出；牙块（23）设有至少两个，至少两个牙块（23）沿螺杆（22）周向方向上间隔设置，所有的牙块（23）不同时与所有的间隔槽（22a）相对。该输送器通过使多个牙块不同时与螺杆的间隔槽相对，从而有效保证了牙块与螺杆的有效啮合面积，保证了器械的使用稳定性。

Description

输送器 技术领域
本发明涉及介入医疗器械技术领域，尤其涉及一种输送器。
背景技术
随着科技的进步，采用微创手术治疗各种疾病越来越普及化。微创手术一般是通过输送器将医疗器械(如支架)经器官或血管植入到人体内。
介入临床手术中，术者在手术台上操作定位释放器械过程，偶尔也会遇到一种尴尬的情况。以重建左锁骨下动脉LSA为举例，一般主动脉降主动脉由于存在夹层或动脉瘤，通过输送器将支架经各级外周血管如股、髂、腹主、胸主、肱、腋等动脉血管送至主动脉弓部。人体血管解剖结构弯曲复杂，释放过程阻力较大，在慢速释放过程中由于牙块数量、排布及尺寸的限制，在牙块经过导管缝隙时与牙块作用面减小，从而导致慢速释放时容易出现滑齿。这会导致慢速释放无法进行，严重影响医生的操作。
发明内容
基于此，本发明提出一种输送器，以至少解决牙块出现滑齿的问题。
为达此目的，本发明采用以下技术方案：
本发明提供一种输送器，包括鞘芯组件及输送手柄，所述鞘芯组件包括鞘管及连接于所述鞘管近端的鞘管接头，所述输送手柄包括壳体、位于所述壳体内的螺杆和牙块、以及与所述牙块连接的锁紧装置；所述螺杆包括径向对合设置的上螺杆和下螺杆，所述上螺杆和所述下螺杆的两侧对合处均设有沿轴向方向延伸的间隔槽，所述鞘管的近端伸入所述输送手柄的所述螺杆内且所述鞘管接头径向上的两侧分别自两侧的所述间隔槽伸出；所述牙块设有至少两个，至 少两个所述牙块沿所述螺杆周向方向上间隔设置，所述牙块具有与所述螺杆外的外螺纹啮合的第一状态以及与所述螺杆外的外螺纹脱离啮合的第二状态，其中，所有的所述牙块不同时与所有的所述间隔槽相对；所述锁紧装置用于在非外力作用下保持所述牙块处于啮合的第一状态、并在外力作用下使得所述牙块处于脱离啮合的第二状态。
在其中一个实施例中，所述牙块设有三个，三个所述牙块沿所述螺杆周向方向上间隔设置，使得始终至少有一个所述牙块不与所述间隔槽相对。
在其中一个实施例中，三个所述牙块周向上等角度分布，使得始终至少有两个所述牙块不与所述间隔槽相对。
在其中一个实施例中，在三个所述牙块轴向上位置相同时，所述螺杆上的外螺纹采用三螺纹结构；在三个所述牙块轴向上位置不完全相同或完全不相同时，所述螺杆上的外螺纹采用双螺纹结构或单螺纹结构。
在其中一个实施例中，所述锁紧装置包括套设于所述螺杆上的螺杆套及套设于所述螺杆套上的扳机套，所述螺杆套的靠近远端侧的侧壁上开设有可供所述牙块的远端伸入的第一通孔，所述扳机套的侧壁上开设有可供所述牙块的近端伸入的第二通孔，所述牙块置于所述螺杆套与所述扳机套之间，且在第一状态下，所述牙块的远端穿过所述第一通孔与所述螺杆上的外螺纹啮合，所述牙块的近端相对所述远端呈悬空状并伸入所述第二通孔；在第二状态下，所述扳机套受外力作用朝向近端后撤，后撤的所述扳机套抵压所述牙块的近端使得所述牙块的远端翘起呈悬空状，从而脱离与所述螺杆的啮合。
在其中一个实施例中，所述锁紧装置还包括轴向上相对设于所述螺杆套近端的弹簧顶套，所述弹簧顶套的近端面处径向伸出形成一环形的阻挡面，所述锁紧装置还包括套设于所述螺杆套和所述弹簧顶套上的回位弹簧，所述回位弹簧的一端与所述扳机套的近端面相抵，另一端与所述阻挡面相抵，所述回位弹簧用于提供弹力使后撤的所述扳机套回位至初始的第一状态。
在其中一个实施例中，所述扳机套的外壁上凸设有一连接凸起，所述壳体上设有一穿孔，所述锁紧装置还包括扳机，所述连接凸起穿过所述穿孔与所述 扳机相对固定，外力作用下所述扳机带动所述扳机套轴向后撤。
在其中一个实施例中，所述鞘芯组件还包括穿设于所述鞘管内的内鞘芯，所述内鞘芯的远端设有一tip头，所述壳体的内壁上凸设有阻挡台，所述阻挡台至少轴向间隔设有两个，自两侧的所述间隔槽伸出的所述鞘管接头介于两所述阻挡台之间，所述输送器还包括弹性件，所述弹性件的近端与所述壳体相对固定，所述弹性件的远端与所述鞘管接头的近端相抵；在所述输送器未经处理前，所述鞘管远端面与所述内鞘芯的tip头相抵，所述鞘管接头的远端距离远端的所述阻挡台一定间距，且所述弹性件处于压缩状态；在所述输送器经处理后，所述弹性件朝向远端推抵所述鞘管接头直至使所述鞘管接头的远端面与所述tip头再次相抵。
在其中一个实施例中，所述弹性件套设于所述螺杆上，且所述弹性件的近端与位于近端的所述阻挡台抵接，所述弹性件的远端与伸出所述间隔槽的所述鞘管接头的近端面抵接。
在其中一个实施例中，所述输送器还包括挡块，所述壳体的内壁上凸设有限位块，所述限位块轴向间隔设有两个，所述挡块被轴向上限位于两所述限位块之间，所述挡块穿过所述间隔槽伸入所述螺杆内，所述弹性件置于所述螺杆内，置于所述螺杆内的所述弹性件的近端与所述挡块之间相抵，所述弹性件的远端与所述鞘管接头的近端面相抵。
本发明的输送器通过使多个牙块不同时与螺杆的间隔槽相对，从而有效保证了牙块与螺杆的有效啮合面积，保证了器械的使用稳定性。且进一步通过在鞘管接头的近端侧设置弹性件，且鞘管接头可在弹性件的弹力作用下朝向远端移动，从而补偿鞘管接头由于经过处理而造成的短缩，防止鞘管短缩时头部出现段差。
附图说明
图1为本发明示例性的输送器的局部爆炸结构示意图；
图2为本发明示例性的输送器中牙块与螺杆的局部连接示意图；
图3为本发明示例性的输送器的截面示意图；
图4为本发明示例性的输送器中多个牙块轴向上位置相同时的局部结构示意图；
图5为本发明示例性的输送器中多个牙块轴向上位置不同时的局部结构示意图；
图6为本发明示例性的输送器的局部半剖示意图；
图7为鞘管出现短缩时的布局示意图；
图8为本发明示例性的输送器中弹性件的另一种设置方式的局部剖视图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，下面将参照附图更详细地描述本公开的示例性实施方式。虽然附图中显示了本公开的示例性实施方式，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施方式所限制。相反，提供这些实施方式是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
应理解的是，文中使用的术语仅出于描述特定示例实施方式的目的，而无意于进行限制。除非上下文另外明确地指出，否则如文中使用的单数形式“一”、“一个”以及“所述”也可以表示包括复数形式。术语“包括”、“包含”、“含有”以及“具有”是包含性的，并且因此指明所陈述的特征、步骤、操作、元件和/或部件的存在，但并不排除存在或者添加一个或多个其它特征、步骤、操作、元件、部件、和/或它们的组合。文中描述的方法步骤、过程、以及操作不解释为必须要求它们以所描述或说明的特定顺序执行，除非明确指出执行顺序。还应当理解，可以使用另外或者替代的步骤。
尽管可以在文中使用术语第一、第二、第三等来描述多个元件、部件、区域、层和/或部段，但是，这些元件、部件、区域、层和/或部段不应被这些术语所限制。这些术语可以仅用来将一个元件、部件、区域、层或部段与另一区域、层或部段区分开。除非上下文明确地指出，否则诸如“第一”、“第二”之类的术语以及其它数字术语在文中使用时并不暗示顺序或者次序。因此，以下讨论 的第一元件、部件、区域、层或部段在不脱离示例实施方式的教导的情况下可以被称作第二元件、部件、区域、层或部段。
为了便于描述，可以在文中使用空间相对关系术语来描述如图中示出的一个元件或者特征相对于另一元件或者特征的关系，这些相对关系术语例如为“内部”、“外部”、“内侧”、“外侧”、“下面”、“下方”、“上面”、“上方”等。这种空间相对关系术语意于包括除图中描绘的方位之外的在使用或者操作中装置的不同方位。例如，如果在图中的装置翻转，那么描述为“在其它元件或者特征下面”或者“在其它元件或者特征下方”的元件将随后定向为“在其它元件或者特征上面”或者“在其它元件或者特征上方”。因此，示例术语“在……下方”可以包括在上和在下的方位。装置可以另外定向(旋转90度或者在其它方向)并且文中使用的空间相对关系描述符相应地进行解释。
还需要说明的是，在介入医疗器械领域，近端是指距离操作者较近的一端，而远端是指距离操作者较远的一端；将柱体、管体等一类物体的旋转中心轴的方向定义为轴向；周向为围绕柱体、管体等一类物体的轴线的方向(垂直于轴线，同时垂直于截面半径)；径向指沿直径或半径的方向。值得注意的是，无论“近端”、“远端”、“一端”、“另一端”、“第一端”、“第二端”、“初始端”、“末端”、“两端”、“自由端”、“上端”、“下端”等词语中所出现的“端”，并不仅限于端头、端点或端面，也包括自端头、端点、或端面在端头、端点、或端面所属元件上延伸一段轴向距离和/或径向距离的部位。上述定义只是为了表述方便，并不能理解为对本实用新型的限制。
参照图1和图2，本方面示例性的提供一种输送器100，所述输送器100包括鞘芯组件10及输送手柄20，鞘芯组件10包括鞘管11及连接于鞘管11近端的鞘管接头12，输送手柄20包括壳体21、位于壳体21内的螺杆22和牙块23、以及与牙块23连接的锁紧装置。
其中，参照图1所示，壳体21包括轴向上相对设置的固定手柄211和移动手柄212，移动手柄212位于近端侧，为了便于拆装，固定手柄211和移动手柄212均为上下对合的结构，如图1所示，固定手柄211包括对合的上固定部211a 和下固定部211b，移动手柄212包括对合的上移动部212a和下移动部212b。所述螺杆22穿过固定手柄211和移动手柄212，牙块23和鞘管接头12位于移动手柄212内。
继续参照图1和图2，螺杆22包括径向对合设置的上螺杆221a和下螺杆221b，上螺杆221a和下螺杆221b的两侧对合处均设有沿轴向方向延伸的间隔槽22a，使得对合后的螺杆22上设有两条对称设置的间隔槽22a，鞘管11的近端伸入输送手柄20的螺杆22内且鞘管接头12径向上的其中两侧分别自两侧的间隔槽22a伸出，鞘管接头12与鞘管11相对固定，鞘管接头12可沿间隔槽22a轴向移动，鞘管11随鞘管接头12的移动而轴向移动。
其中，牙块23设有至少两个，至少两个牙块23沿螺杆22周向方向上间隔设置，牙块23具有与螺杆22外的外螺纹啮合的第一状态以及与螺杆22外的外螺纹脱离啮合的第二状态，所有的牙块23不同时与所有的间隔槽22a相对，该设置，使得始终至少有一个牙块23不与间隔槽22a相对，这样保证了牙块23与螺杆22的外螺纹始终有有效啮合面积，从而避免滑齿。一般的，两间隔槽22a径向上相对称设置，即位于两侧，因此，若牙块23设有两个，那么，为了避免两个牙块23同时与两个间隔槽22a相对，则两个牙块23为非对称设置，在其中一个牙块23与间隔槽22a相对时，则另一个必然不相对。
具体的，在本实施例中，如图1和图2所示，牙块23设有三个，三个牙块23沿螺杆22周向方向上间隔设置，使得始终至少有一个牙块23不与间隔槽22a相对。在设置三个牙块23时，三个牙块23之间的角度可根据需要进行设置，只需要保证始终至少有一个牙块23不与间隔槽22a相对即可。较佳的，如图3所示，为了保证转动以及移动的稳定性，三个牙块23周向上等角度分布，这样可以使得始终至少有两个牙块23不与间隔槽22a相对，即在其中一个牙块23与对称设置的间隔槽22a相对时，另外两个必然不与间隔槽22a相对，两个牙块23均与螺杆22的外螺纹啮合，进一步增大了啮合面积，避免滑齿的同时提高整体的稳定性。
如图4所示，在三个牙块23轴向上位置相同时，螺杆22上的外螺纹采用三螺纹结构；如图5所示，在三个牙块23轴向上位置不完全相同或完全不相同 时，螺杆22上的外螺纹采用双螺纹结构或单螺纹结构。
锁紧装置用于在非外力作用下保持牙块23处于啮合的第一状态、并在外力作用下使得牙块23处于脱离啮合的第二状态。
具体的，参见图1和图6所示，锁紧装置包括套设于螺杆22上的螺杆套24及套设于螺杆套24上的扳机套25，螺杆套24的靠近远端侧的侧壁上开设有可供牙块23的远端伸入的第一通孔24a，扳机套25的侧壁上开设有可供牙块23的近端伸入的第二通孔25a，牙块23置于螺杆套24与扳机套25之间，且在第一状态下，牙块23的远端穿过第一通孔24a与螺杆22上的外螺纹啮合，牙块23的近端相对远端呈悬空状并伸入第二通孔25a；在第二状态下，扳机套25受外力作用朝向近端后撤，后撤的扳机套25抵压牙块23的近端使得牙块23的远端翘起呈悬空状，从而脱离与螺杆22的啮合。
进一步的，锁紧装置还包括轴向上相对设于螺杆套24近端的弹簧顶套27，弹簧顶套27的近端面处径向伸出形成一环形的阻挡面27a，锁紧装置还包括套设于螺杆套24和弹簧顶套27上的回位弹簧26，回位弹簧26的一端与扳机套25的近端面相抵，另一端与阻挡面27a相抵，回位弹簧26用于提供弹力使后撤的扳机套25回位至初始的第一状态。其中，为了便于安装，弹簧顶套27的远端面上凹设有多个V字形凹槽。
参照图6，扳机套25向后运动，带动牙块23远离中心，此时移动手柄212可以在螺杆22上线性运动；不对扳机套25施力，回位弹簧26对扳机套25施加向前的力，牙块23与螺杆22啮合，此时移动手柄212与螺杆22只能螺旋转动而不可以线性运动。
继续参照图1和图6，为了便于施加外力作用于扳机套25上，扳机套25的外壁上凸设有一连接凸起25b，壳体21上设有一穿孔(未示出)，锁紧装置还包括扳机28，连接凸起25b穿过穿孔与扳机28相对固定，外力作用下扳机28带动扳机套25轴向后撤。
本发明上述输送器，通过使多个牙块不同时与螺杆的间隔槽相对，从而有效保证了牙块与螺杆的有效啮合面积，保证了器械的使用稳定性。
然而由于鞘管11主体为高分子材料，如图7所示，在灭菌及存储过程中材料在自身应力的作用下会出现长度缩短的现象，在鞘管11近端与TIP头13形成段差。此时如果进行手术鞘管11头部会与血管产生刮蹭，严重时会刮伤血管。
鉴于此，在上述的基础上，本发明进一步对输送器进行改进，参照图6所示，鞘芯组件10还包括穿设于鞘管11内的内鞘芯，内鞘芯的远端设有一tip头13，壳体21的内壁上凸设有阻挡台，阻挡台至少轴向间隔设有两个，两个阻挡台分别为阻挡台2121和阻挡台2122，自两侧的间隔槽22a伸出的鞘管接头12介于阻挡台2121和阻挡台2122之间，输送器100还包括弹性件30，弹性件30的近端与壳体21相对固定，弹性件30的远端与鞘管接头12的近端相抵。
在输送器100未经处理前，本实施例的所述处理指任何能够引起鞘管11短缩的过程，例如灭菌处理。参照图6所示，未处理前，鞘管11远端面与内鞘芯的tip头13相抵，鞘管接头12的远端距离远端的阻挡台一定间距h1，间距h1大于零，且弹性件30处于压缩状态，其中，鞘管11在弹性件30的弹性抵持状态下抗弯折，即弹性件30提供的弹力不能够使鞘管11发生弯折；在输送器100经处理后，弹性件30朝向远端推抵鞘管接头12直至使鞘管接头12的远端面与tip头13再次相抵，此时由于鞘管接头12与鞘管11均朝向远端发生了移动，因此h1减小或者h1减小为零。
继续参照图6所示，作为弹性件30的近端与壳体21相对固定的一种实施方式，输送器100还包括挡块40，壳体21的内壁上凸设有限位块，限位块轴向间隔设有两个，两个限位块分别为2123和2124，挡块40被轴向上限位于两限位块2123和2124之间，挡块40穿过间隔槽22a伸入螺杆22内，弹性件30置于螺杆22内，置于螺杆22内的弹性件30的近端与挡块40之间相抵，弹性件30的远端与鞘管接头12的近端面相抵。
参照图8所示，作为弹性件30的近端与壳体21相对固定的另一种实施方式，弹性件30套设于螺杆22上，且弹性件30的近端与位于近端的阻挡台2122抵接，弹性件30的远端与伸出间隔槽22a的鞘管接头12的近端面抵接。
在进一步的方案中，通过在鞘管接头的近端侧设置弹性件，且鞘管接头可 在弹性件的弹力作用下朝向远端移动，从而补偿鞘管接头由于经过处理而造成的短缩，防止鞘管短缩时头部出现段差。本实施例将鞘管接头与手柄的固定结构设计为活动结构，弹性件给鞘管接头一定的弹力，由于支架端鞘管与支架紧配，鞘管远端具有一定的摩擦力固定，而鞘管接头端因为弹性件给鞘管接头弹力，并且鞘管接头有一定的自由活动空间，当鞘管有短缩的趋势时，鞘管接头端会向近端移动，从而避免鞘管近端短缩。另外也能防止鞘管短缩后，内鞘芯不能完全收回到鞘管中。
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。
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。

Claims (10)

  1. 一种输送器，其特征在于，包括鞘芯组件及输送手柄，所述鞘芯组件包括鞘管及连接于所述鞘管近端的鞘管接头，所述输送手柄包括壳体、位于所述壳体内的螺杆和牙块、以及与所述牙块连接的锁紧装置；所述螺杆包括径向对合设置的上螺杆和下螺杆，所述上螺杆和所述下螺杆的两侧对合处均设有沿轴向方向延伸的间隔槽，所述鞘管的近端伸入所述输送手柄的所述螺杆内且所述鞘管接头径向上的两侧分别自两侧的所述间隔槽伸出；所述牙块设有至少两个，至少两个所述牙块沿所述螺杆周向方向上间隔设置，所述牙块具有与所述螺杆外的外螺纹啮合的第一状态以及与所述螺杆外的外螺纹脱离啮合的第二状态，其中，所有的所述牙块不同时与所有的所述间隔槽相对；所述锁紧装置用于在非外力作用下保持所述牙块处于啮合的第一状态、并在外力作用下使得所述牙块处于脱离啮合的第二状态。
  2. 根据权利要求1所述的输送器，所述牙块设有三个，三个所述牙块沿所述螺杆周向方向上间隔设置，使得始终至少有一个所述牙块不与所述间隔槽相对。
  3. 根据权利要求2所述的输送器，三个所述牙块周向上等角度分布，使得始终至少有两个所述牙块不与所述间隔槽相对。
  4. 根据权利要求2或3所述的输送器，在三个所述牙块轴向上位置相同时，所述螺杆上的外螺纹采用三螺纹结构；在三个所述牙块轴向上位置不完全相同或完全不相同时，所述螺杆上的外螺纹采用双螺纹结构或单螺纹结构。
  5. 根据权利要求1～3任一所述的输送器，所述锁紧装置包括套设于所述螺杆上的螺杆套及套设于所述螺杆套上的扳机套，所述螺杆套的靠近远端侧的侧壁上开设有可供所述牙块的远端伸入的第一通孔，所述扳机套的侧壁上开设有可供所述牙块的近端伸入的第二通孔，所述牙块置于所述螺杆套与所述扳机套之间，且在第一状态下，所述牙块的远端穿过所述第一通孔与所述螺杆上的外螺纹啮合，所述牙块的近端相对所述远端呈悬空状并伸入所述第二通孔；在第二状态下，所述扳机套受外力作用朝向近端后撤，后撤的所述扳机套抵压所述牙块的近端使得所述牙块的远端翘起呈悬空状，从而脱离与所述螺杆的啮合。
  6. 根据权利要求5所述的输送器，所述锁紧装置还包括轴向上相对设于所述螺杆套近端的弹簧顶套，所述弹簧顶套的近端面处径向伸出形成一环形的阻挡面，所述锁紧装置还包括套设于所述螺杆套和所述弹簧顶套上的回位弹簧，所述回位弹簧的一端与所述扳机套的近端面相抵，另一端与所述阻挡面相抵，所述回位弹簧用于提供弹力使后撤的所述扳机套回位至初始的第一状态。
  7. 根据权利要求5所述的输送器，所述扳机套的外壁上凸设有一连接凸起，所述壳体上设有一穿孔，所述锁紧装置还包括扳机，所述连接凸起穿过所述穿孔与所述扳机相对固定，外力作用下所述扳机带动所述扳机套轴向后撤。
  8. 根据权利要求1～3任一所述的输送器，所述鞘芯组件还包括穿设于所述鞘管内的内鞘芯，所述内鞘芯的远端设有一tip头，所述壳体的内壁上凸设有阻挡台，所述阻挡台至少轴向间隔设有两个，自两侧的所述间隔槽伸出的所述鞘管接头介于两所述阻挡台之间，所述输送器还包括弹性件，所述弹性件的近端与所述壳体相对固定，所述弹性件的远端与所述鞘管接头的近端相抵；在所述输送器未经处理前，所述鞘管远端面与所述内鞘芯的tip头相抵，所述鞘管接头的远端距离远端的所述阻挡台一定间距，且所述弹性件处于压缩状态；在所述输送器经处理后，所述弹性件朝向远端推抵所述鞘管接头直至使所述鞘管接头的远端面与所述tip头再次相抵。
  9. 根据权利要求8所述的输送器，所述弹性件套设于所述螺杆上，且所述弹性件的近端与位于近端的所述阻挡台抵接，所述弹性件的远端与伸出所述间隔槽的所述鞘管接头的近端面抵接。
  10. 根据权利要求8所述的输送器，所述输送器还包括挡块，所述壳体的内壁上凸设有限位块，所述限位块轴向间隔设有两个，所述挡块被轴向上限位于两所述限位块之间，所述挡块穿过所述间隔槽伸入所述螺杆内，所述弹性件置于所述螺杆内，置于所述螺杆内的所述弹性件的近端与所述挡块之间相抵，所述弹性件的远端与所述鞘管接头的近端面相抵。
PCT/CN2023/138480 2022-12-30 2023-12-13 输送器 Ceased WO2024140219A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23910149.6A EP4643828A4 (en) 2022-12-30 2023-12-13 Conveyor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211730472.3A CN118267214A (zh) 2022-12-30 2022-12-30 输送器
CN202211730472.3 2022-12-30

Publications (1)

Publication Number Publication Date
WO2024140219A1 true WO2024140219A1 (zh) 2024-07-04

Family

ID=91643456

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/138480 Ceased WO2024140219A1 (zh) 2022-12-30 2023-12-13 输送器

Country Status (3)

Country Link
EP (1) EP4643828A4 (zh)
CN (1) CN118267214A (zh)
WO (1) WO2024140219A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120570724A (zh) * 2025-07-09 2025-09-02 广东迈迪健通科技有限公司 用于医疗器械输送器的鞘管后撤结构、手柄组件及输送器
CN120789435A (zh) * 2025-07-18 2025-10-17 广东迈迪健通科技有限公司 用于医疗器械输送器的接头、手柄组件及输送器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180200496A1 (en) * 2017-01-19 2018-07-19 Cook Medical Technologies Llc Prosthesis delivery device with detachable connector assembly
WO2019128806A1 (zh) * 2017-12-26 2019-07-04 杭州唯强医疗科技有限公司 主动脉支架的输送释放装置
CN110974502A (zh) * 2019-11-14 2020-04-10 先健科技(深圳)有限公司 输送器以及植入件输送系统
CN113855354A (zh) * 2020-06-30 2021-12-31 上海微创心脉医疗科技(集团)股份有限公司 一种输送装置
US20220323216A1 (en) * 2019-09-03 2022-10-13 Shanghai Microport Cardioflow Medtech Co., Ltd. Medical implant conveying device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7105016B2 (en) * 2002-04-23 2006-09-12 Medtronic Vascular, Inc. Integrated mechanical handle with quick slide mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180200496A1 (en) * 2017-01-19 2018-07-19 Cook Medical Technologies Llc Prosthesis delivery device with detachable connector assembly
WO2019128806A1 (zh) * 2017-12-26 2019-07-04 杭州唯强医疗科技有限公司 主动脉支架的输送释放装置
US20220323216A1 (en) * 2019-09-03 2022-10-13 Shanghai Microport Cardioflow Medtech Co., Ltd. Medical implant conveying device
CN110974502A (zh) * 2019-11-14 2020-04-10 先健科技(深圳)有限公司 输送器以及植入件输送系统
CN113855354A (zh) * 2020-06-30 2021-12-31 上海微创心脉医疗科技(集团)股份有限公司 一种输送装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4643828A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120570724A (zh) * 2025-07-09 2025-09-02 广东迈迪健通科技有限公司 用于医疗器械输送器的鞘管后撤结构、手柄组件及输送器
CN120570724B (zh) * 2025-07-09 2025-11-18 广东迈迪健通科技有限公司 用于医疗器械输送器的鞘管后撤结构、手柄组件及输送器
CN120789435A (zh) * 2025-07-18 2025-10-17 广东迈迪健通科技有限公司 用于医疗器械输送器的接头、手柄组件及输送器

Also Published As

Publication number Publication date
CN118267214A (zh) 2024-07-02
EP4643828A1 (en) 2025-11-05
EP4643828A4 (en) 2026-04-08

Similar Documents

Publication Publication Date Title
US20100022951A1 (en) Detachable hub/luer device and processes
WO2024140219A1 (zh) 输送器
US9039676B2 (en) Apparatus and methods for catheter steerability
US8435249B2 (en) Flexible connection catheter tunneler and methods for using the same
US8328759B2 (en) Intraluminal cannula placement apparatus utilizing a specialized cannula for use with a previously inserted I.V. catheter
US8162905B2 (en) Delivery system
CN101384293A (zh) 导丝
CN111053634A (zh) 植入器械的释放组件、植入器械输送器及输送系统
JP6657079B2 (ja) 弁器具への医療用装置の固定
JP2014520621A (ja) 薬物送達装置およびアダプタ
CN105640620A (zh) 介入医疗器械、输送装置及介入医疗系统
CN110638488A (zh) 连接可靠的植入物推送装置及植入物输送系统
WO2020151538A1 (zh) 植入物的装载工具、压缩装置及装载系统
WO2015146408A1 (ja) カテーテル組立体および内カテーテル
CN106333774A (zh) 管腔支架输送系统
CN109771111B (zh) 一种自膨胀支架的推送系统
CN211156010U (zh) 一种植入物的输送装置和管腔植入系统
JP2022549609A (ja) ストレインリリーフ構成部及びその製造方法
TWI798147B (zh) 一種醫用裝置
US20260061167A1 (en) Vascular puncture sheath facilitating fixation and redirection and vascular puncture device
CN112971900B (zh) 输送装置
CN221732047U (zh) 一种导丝固定夹持组件及介入器械输送装置
CN110638489A (zh) 快速释放的植入物推送装置及植入物输送系统
CN112438769A (zh) 一种植入物的输送装置和管腔植入系统
CN209392164U (zh) 输送系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23910149

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202517070865

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2023910149

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2023910149

Country of ref document: EP

Effective date: 20250730

ENP Entry into the national phase

Ref document number: 2023910149

Country of ref document: EP

Effective date: 20250730

WWP Wipo information: published in national office

Ref document number: 202517070865

Country of ref document: IN

WWP Wipo information: published in national office

Ref document number: 2023910149

Country of ref document: EP