WO2022165967A1 - 连续神经阻滞导管输送系统及方法 - Google Patents

连续神经阻滞导管输送系统及方法 Download PDF

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Publication number
WO2022165967A1
WO2022165967A1 PCT/CN2021/084563 CN2021084563W WO2022165967A1 WO 2022165967 A1 WO2022165967 A1 WO 2022165967A1 CN 2021084563 W CN2021084563 W CN 2021084563W WO 2022165967 A1 WO2022165967 A1 WO 2022165967A1
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WO
WIPO (PCT)
Prior art keywords
catheter
conveyor
nerve block
continuous nerve
delivery sheath
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PCT/CN2021/084563
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English (en)
French (fr)
Inventor
徐军美
崔宇龙
齐欣
余丰伶
刘政
Original Assignee
中南大学湘雅二医院
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Application filed by 中南大学湘雅二医院 filed Critical 中南大学湘雅二医院
Publication of WO2022165967A1 publication Critical patent/WO2022165967A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3401—Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors

Definitions

  • the invention relates to the technical field of medical devices, in particular to a continuous nerve block catheter delivery system and method.
  • a needle and a continuous nerve block catheter are used to perform the operation.
  • a soft continuous nerve block catheter is used to place the potential interstitial space. If a stiffer catheter is selected, it is often easy to pierce the serosa Or fascia, the drug solution will be injected into other anatomical layers, and the operation will fail. Because the continuous nerve block catheter is extremely soft, the diameter of the catheter is very small, and the supporting force is lacking. During delivery, the catheter is placed by hand, and it is easy to place a finger at the end of the puncture needle. Bending in the space between the needle tail and the needle tail, making it difficult to place the tube.
  • the nerve block catheter is often delivered to the patient to a certain amount, and then the nerve block catheter is withdrawn and placed in a predetermined suitable position, which cannot be placed in the patient. Precise control of the depth of the catheter at the entry stage, and the method of retraction after insertion will increase the possibility of tissue damage and the occurrence of complications such as bleeding.
  • the object of the present invention is to provide a flexible continuous nerve block catheter that is easy to give according to the shortcomings of the existing soft continuous nerve block catheter, which is easy to bend during delivery due to its softness and lack of supporting force, resulting in difficulty in catheter placement.
  • the supporting force makes it difficult to bend during delivery, improves the speed of cannulation, and further facilitates the continuous nerve block catheter delivery device for cannulation.
  • a continuous nerve block catheter delivery system comprising a hollow puncture needle and a tubular conveyor, the puncture needle is provided with a handle at one end away from the needle tip, and the handle is far away from the puncture needle needle tip.
  • One side is fixedly connected with a hollow connecting head, a connecting needle is sleeved in the connecting head, a conveyor is fixedly connected at one end of the connecting needle away from the connecting head, and a delivery sheath is sleeved at one end of the conveyer away from the connecting needle, The delivery sheath is sleeved with a continuous nerve block catheter, and the continuous nerve block catheter sequentially extends through the delivery sheath, the conveyor and the connecting needle into the puncture needle.
  • the surface of the conveyor is provided with a through groove, so the A pressing block is movably arranged in the through groove, and the pressing block is overlapped with the surface of the continuous nerve blocking catheter.
  • At least one limit line is provided on the surface of the conveyor, and the other end of the limit line is fixedly connected to the surface of the delivery sheath.
  • the surface of the conveyor is provided with an observation hole
  • the surface of the continuous nerve block catheter is provided with a colored ring mark
  • the distance from the colored ring mark to the foremost end of the continuous nerve block catheter is equal to the distance from the observation hole to the needle tip of the puncture needle the distance.
  • a light-transmitting hole is opened on the surface of the conveyor on the side opposite to the observation hole.
  • the surface of the conveyor is provided with a scale
  • the scale is located on the surface of the conveyor close to a section of the delivery sheath and is provided with an annular limit protrusion
  • the limit protrusion is located at the zero scale of the scale
  • the length of the delivery sheath is no greater than the length from the side of the pressing block away from the connecting needle to the end face of the conveyor at one end away from the connecting needle
  • the outer diameter of the limiting protrusion is smaller than the inner diameter of the delivery sheath.
  • a ring sleeve is sleeved on the surface of the conveyor, a connecting rod is fixedly connected to the surface of the ring sleeve, and the other end of the connecting rod is fixedly connected with the top of the pressing block.
  • a plurality of elastic protrusions are provided on the inner wall of the delivery sheath.
  • the side of the pressing block facing the continuous nerve block catheter is an arc shape suitable for the continuous nerve block catheter, and the side is a non-slip surface, and the outer wall surface of the delivery sheath is a non-slip surface.
  • the inner wall of the inner cavity of the puncture needle near the connector and the inner wall of the end of the delivery sheath away from the conveyor are provided with chamfers, and the inner wall of the end of the conveyor located inside the delivery sheath is provided with chamfers.
  • the delivery sheath includes a detachable first part and a second part, the first part and the second part are both semicircular tubes, the first part and the second part are clamped
  • the buckle connection forms a delivery sheath, the contact surface of the first part and the second part is provided with at least one inwardly recessed J-shaped chute, and the contact surface of the second part and the first part is provided with at least one A J-shaped clamping block protruding outward, the J-shaped clamping block is arranged corresponding to the J-shaped chute.
  • the present invention also provides a continuous nerve block catheter delivery method, comprising the following steps:
  • the continuous nerve block catheter delivery system of the present invention has the following beneficial effects: simple structure, small volume, convenient operation and strong adaptability, the continuous nerve block catheter is tightly wrapped by the conveyor and the delivery sheath, and a supporting force is provided to make the catheter It will not bend, which is convenient for catheter placement; through the cooperation of the delivery sheath and the scale, the delivery distance of the continuous nerve block catheter can be precisely controlled to achieve the purpose of precise catheter placement; after the continuous nerve block catheter is delivered to the predetermined position, the The device separates the continuous nerve block catheter from the protrusions in the delivery sheath to facilitate needle withdrawal.
  • Fig. 1 is the structural representation of the present invention
  • Fig. 2 is the exploded view of Fig. 1;
  • Fig. 3 is the enlarged view at B in Fig. 1;
  • Fig. 4 is the enlarged view of C place in Fig. 1;
  • Fig. 5 is the A-A sectional view of the present invention.
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of the present invention.
  • a continuous nerve block catheter delivery system includes a hollow puncture needle 1 and a tubular conveyor 2.
  • the end of the puncture needle 1 away from the needle tip is provided with a handle 3, and the handle 3 is far from the needle tip of the puncture needle 1.
  • a hollow connecting head 4 is fixedly connected, a connecting needle 5 is sleeved in the connecting head 4, the surface of the connecting needle 5 is movably connected with the inner wall of the connecting head 4, and a certain friction force is maintained between the two, which can effectively prevent the connecting needle 5 slippage, and then avoid the slippage of the conveyor 2,
  • the connecting needle 5 is fixedly connected with one end of the conveyor 2 away from the connector 4,
  • the other end of the conveyor 2 is sleeved with a delivery sheath 6, and the delivery sheath 6 slides with the conveyor 2 Connection
  • the delivery sheath 6 is sleeved with a continuous nerve block catheter 7, and the continuous nerve block catheter 7 runs through the delivery sheath 6, the conveyor 2 and the connecting needle 5 in turn and extends into the puncture needle 1, and the continuous nerve block catheter 7.
  • the 7 is slidably connected with the delivery sheath 6 , the delivery device 2 , the connecting needle 5 and the puncture needle 1 .
  • the surface of the delivery device 2 is provided with a through groove 8 , and a pressing block 9 is movably arranged in the through groove 8 .
  • the pressing block 9 is kept at a certain distance from the surface of the continuous nerve block catheter 7, and the connecting needle 5 and the conveyor 2 are integrally formed.
  • the conveyor 2 and the delivery sheath 6 are both made of hard materials, through the cooperation of the conveyor 2 and the delivery sheath 6, the continuous nerve block catheter 7 slides inside the conveyor 2 and the delivery sheath 6, The conveyor 2 and the delivery sheath 6 tightly wrap the continuous nerve block catheter 7 to give a supporting force, so that the continuous nerve block catheter 7 is not easily bent, so that the flexible continuous nerve block catheter 7 is easily transported into the puncture needle 1, and then Delivered to the patient for easy catheter placement.
  • At least one limit wire 10 is provided on the surface of the conveyor 2 , and the other end of the limit wire 10 is fixedly connected to the surface of the delivery sheath 6 .
  • a ring sleeve 11 is sleeved on the surface of the conveyor 2 , a connecting rod 12 is fixedly connected to the surface of the ring sleeve 11 , and the other end of the connecting rod 12 is fixedly connected to the top of the pressing block 9 .
  • the fixing of the pressing block 9 is facilitated by the ring sleeve 11 and the connecting rod 12 .
  • the surface of the conveyor 2 is provided with an observation hole 16, and the surface of the continuous nerve block catheter 7 is provided with a colored circular mark 17, and the distance from the colored circular mark 17 to the foremost end of the continuous nerve block catheter 7 is equal to the distance from the observation hole 16 to the puncture needle 1 needle tip distance.
  • the observation hole 16 is located between the surface of the conveyor 2, the ring sleeve 11 and the connecting needle 5, the width of the colored marking ring 17 is not less than the diameter of the observation hole or the light-transmitting hole, and the color of the colored marking ring 17 is bright color Depends on the color, such as crimson, bright orange, golden yellow, emerald green, etc., by setting the observation hole 16, it can be checked in real time whether there is a colored marking ring 17 on the surface of the continuous nerve block catheter 7.
  • the colored ring mark 17 is observed in the observation hole 16 That is, when the colored ring mark 17 is located at the observation hole 16 , the front end of the continuous nerve block catheter 7 is exactly flush with the front end of the needle tip of the puncture needle 1 .
  • the surface of the conveyor 2 and the side opposite to the observation hole 16 may also be provided with a light-transmitting hole 18 .
  • the observation hole 16 and the light-transmitting hole 18 are symmetrically arranged with the center line of the conveyor 2 as the axis of symmetry.
  • the light-transmitting hole 18 it is convenient to enhance the brightness inside the conveyor 2, thereby enhancing the brightness in the observation hole, which is convenient for Observe the colored ring marker 17.
  • the surface of the conveyor 2 is provided with a scale
  • the scale is located on the surface of the conveyor 2 close to a section of the delivery sheath 6
  • the surface of the conveyor 2 is provided with an annular limit protrusion
  • the limit protrusion 15 is located at zero of the scale.
  • the length of the delivery sheath 6 is not greater than the length from the side of the pressing block 9 away from the connecting needle 5 to the end face of the conveyor 2 away from the connecting needle 5
  • the outer diameter of the limiting protrusion 15 is smaller than the inner diameter of the delivery sheath 6 .
  • the outer diameter of the limiting protrusion 15 is two-thirds of the inner diameter of the delivery sheath 6, and the scale on the surface of the conveyor 2 is a millimeter scale.
  • the protrusion 15 is zero scale and extends away from the pressing block 9. Press the pressing block 9, and push the delivery sheath 6 towards the end of the pressing block 9 to a predetermined scale position, such as 30mm. After adjustment, release the pressing block 9.
  • the delivery sheath 6 push forward the end of the delivery sheath 6 towards the pressing block 9 to the zero scale, under the obstruction of the annular limit protrusion 15, the end of the delivery sheath 6 towards the pressing block 9 cannot easily cross the zero scale, because the delivery sheath
  • the bulge 13 in the 6 has a clamping effect on the continuous nerve block catheter 7, and the delivery sheath 6 drives the continuous nerve block catheter 7 to move 30mm in the direction of the puncture needle 1, which realizes the precise delivery of the continuous nerve block catheter 7, and can
  • the depth to which the front end of the continuous nerve block catheter is sent into the body can be precisely controlled, and the delivery length of the continuous nerve block catheter 7 can also be calculated according to the length of each delivery and the number of times of delivery.
  • the frictional force between the surface of the protrusion 13 and the surface of the continuous nerve blocking catheter 7 is less than the force of penetrating the pleura
  • the protrusion 13 is an elastic body
  • the cross section of the protrusion 13 is a triangle or an arc
  • the lifter 13 has excellent elasticity and is deformed by force, which is convenient for the conveyor 2 to slide inside the delivery sheath 6, and also facilitates the delivery sheath 6 to clamp the continuous nerve block catheter 7.
  • the protrusions 13 are clamped and move with the delivery sheath 6 .
  • the side of the pressing block 9 facing the continuous nerve block catheter 7 is an arc shape suitable for the continuous nerve block catheter 7, and the side is a non-slip surface, and the outer wall surface of the delivery sheath 6 is a non-slip surface.
  • the outer wall surfaces of the pressing block 9 and the delivery sheath 6 are provided with anti-slip silicone or anti-slip patterns.
  • the connecting rod 12 is an elastic rod.
  • the shape of the connecting rod is an arc or ⁇ shape, which is convenient for pressing the pressing block 9, and when the finger is released, the pressing block 9 is reset and out of contact with the continuous nerve block catheter 7.
  • the inner wall of the inner cavity of the puncture needle 1 near the connector and the inner wall of the end of the delivery sheath 6 away from the conveyor 2 are provided with a chamfer 14
  • the inner wall of the end of the conveyor 2 located inside the delivery sheath 6 is provided with a chamfer 14 .
  • the chamfer 14 is provided to facilitate the insertion of the continuous nerve block catheter 7 .
  • the present invention also provides a continuous nerve block catheter delivery method, comprising the following steps:
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a continuous nerve block catheter delivery system includes a hollow puncture needle 1 and a tubular conveyor 2, and a delivery sheath 6 is sleeved at one end of the conveyor 2 away from the puncture needle 1.
  • the delivery sheath 6 includes The detachable first part 601 and the second part 602, the first part 601 and the second part 602 are both semi-circular tubes, and the inner walls of the first part 601 and the second part 602 are provided with several elastic protrusions 13 , the first part 601 and the second part 602 are snap-connected to form the delivery sheath 6, the contact surface between the first part 601 and the second part 602 is provided with at least one inwardly recessed J-shaped chute 603, and the second part 602 The contact surface with the first part 601 is provided with at least one J-shaped blocking block 604 protruding outward, the J-shaped blocking block 604 is arranged corresponding to the J-shaped sliding groove 603, and the J-shaped blocking block 604 can be movably
  • the first part 601 and the second part 602 are connected in the J-shaped chute 603 through the J-shaped clamping block 604, so as to realize the circumferential closure of the delivery sheath 6; push the first part 601 forward,
  • the J-shaped block 604 is slid out from the J-shaped chute 603, the first part 601 is separated from the second part 602, the delivery sheath 6 is separated into two pieces, and is separated from the continuous nerve block catheter 7, other structures and embodiments one is the same.
  • the continuous nerve block catheter delivery system of the present invention tightly wraps the continuous nerve block catheter through the conveyor and the delivery sheath to give a supporting force, so that the catheter will not be bent, which is convenient for catheter placement and improves catheter placement.
  • the success rate reduces the risk of intubation.

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Abstract

一种连续神经阻滞导管输送系统，包括中空的穿刺针(1)和输送器(2)，穿刺针(1)远离针尖一端设有手柄(3)，手柄(3)远离穿刺针(1)针尖一侧固定连接有中空的连接头(4)，连接头(4)内套接有连接针(5)，连接针(5)远离连接头(4)一端固定连接有输送器(2)，输送器(2)远离连接针(5)一端套接有输送鞘管(6)，输送鞘管(6)内套接有连续神经阻滞导管(7)，输送器(2)的表面开设有通槽(8)，通槽(8)内活动设有按压块(9)；连续神经阻滞导管输送系统结构简单，操作方便，通过设置输送器(2)和输送鞘管(6)，使连续神经阻滞导管(7)不会弯曲，克服了徒手置管过程中，因连续神经阻滞导管(7)柔软，易于弯曲，无法置管的困难，便于置管，提高置管速度，提高置管成功率，并且可以精确控制置管深度，且由于使用的连续神经阻滞导管(7)柔软，降低了置管穿破所需解剖层次的风险。

Description

连续神经阻滞导管输送系统及方法 技术领域
本发明涉及医用器械技术领域，尤其涉及连续神经阻滞导管输送系统及方法。
 背景技术
目前的连续神经阻滞中，使用穿刺针和连续神经阻滞导管进行操作，使用柔软的连续神经阻滞导管置入潜在的组织间间隙，如果选择较硬的导管，则常容易刺穿浆膜或筋膜，药液会注入其它解剖层次，并且导致操作失败，由于连续神经阻滞导管极其柔软，管径非常细，缺乏支撑力，在输送时，徒手置管，容易在穿刺针尾端手指与针尾之间的空间中弯折，造成置管困难。
另外，传统的神经阻滞导管置管操作中，常将神经阻滞导管向病人体内输送达到一定余量后，再回撤神经阻滞导管，进而将其置于预定的合适位置，无法在置入阶段精确控制置管深度，置入后回撤的方法，会增加人体组织损伤的可能性，增加出血等并发症的出现概率。
 技术解决方案
本发明的目的是根据现有的柔软的连续神经阻滞导管，由于柔软，缺乏支撑力，在输送时容易弯折，导致置管困难的缺点，提供一种便于给予柔软的连续神经阻滞导管支撑力，使其在输送时不易弯折，提高置管速度，进而便于置管的连续神经阻滞导管输送装置。
为实现上述目的，本发明提供如下技术方案：一种连续神经阻滞导管输送系统，包括中空的穿刺针和管状输送器，所述穿刺针远离针尖一端设有手柄，所述手柄远离穿刺针针尖一侧固定连接有中空的连接头，所述连接头内套接有连接针，所述连接针远离连接头一端固定连接有输送器，所述输送器远离连接针一端套接有输送鞘管，所述输送鞘管内套接有连续神经阻滞导管，所述连续神经阻滞导管依次贯穿输送鞘管、输送器和连接针延伸至穿刺针内，所述输送器的表面开设有通槽，所述通槽内活动设有按压块，所述按压块与连续神经阻滞导管的表面搭接。
优选的，所述输送器表面设有至少一根限位线，所述限位线的另一端与输送鞘管的表面固定连接。
优选的，所述输送器的表面开设有观察孔，所述连续神经阻滞导管表面设有有色环形标记，所述有色环形标记到连续神经阻滞导管最前端的距离等于观察孔到穿刺针针尖的距离。
优选的，所述输送器的表面、与观察孔相对的一侧开设有透光孔。
优选的，所述输送器的表面设有刻度，所述刻度位于输送器靠近输送鞘管一段的表面上设有环状限位凸起，所述限位凸起位于刻度的零刻度，所述输送鞘管的长度不大于按压块远离连接针的侧面到输送器远离连接针一端端面的长度，所述限位凸起的外径小于输送鞘管的内径。
优选的，所述输送器的表面套接有环套，所述环套的表面固定连接有连杆，所述连杆的另一端与按压块的顶部固定连接。
优选的，所述输送鞘管的内壁上设有若干弹性凸起。
优选的，所述按压块朝向连续神经阻滞导管的侧面为与连续神经阻滞导管相适配的弧形，且该侧面为防滑面，所述输送鞘管的外壁表面为防滑面。
优选的，所述穿刺针内腔靠近连接头一端和输送鞘管远离输送器一端内壁均设有倒角，所述输送器位于输送鞘管内部一端内壁设有倒角。
作为另一种优选，所述输送鞘管包括可拆装的第一部件和第二部件，所述第一部件和第二部件均为半圆形管，所述第一部件和第二部件卡扣连接形成输送鞘管，所述第一部件与第二部件的接触面上设有至少一个向内凹陷的J形滑槽，所述第二部件与第一部件的接触面上设有至少一个向外凸出的J形卡块， 所述J形卡块与J形滑槽对应设置。
本发明还提供了一种连续神经阻滞导管输送方法，包括以下步骤：
a、穿刺针穿刺好后，通过连接头4和连接针5将输送器2与穿刺针1连接，然后将输送鞘管从输送器远离连接针一端向连接针方向移动，直至输送鞘管远离连接针一端的端面越过输送器远离连接针一端的端面；
b、将连续神经阻滞导管插入输送器至按压块的位置处，根据连续神经阻滞导管需要输送的长度，按压按压块使连续神经阻滞导管固定，移动输送鞘管到预定刻度处；
c、松开按压块，将输送导管向按压块方向推送至零刻度，在环状限位凸起的阻碍下，输送鞘管朝向按压块的一端不能轻易越过零刻度，由于输送鞘管内的凸起对连续神经阻滞导管的夹持作用，输送导管带动神经阻滞导管向穿刺针方向同步精确移动预定刻度的长度，如此反复操作直至精确将连续神经阻滞导管输送到预定位置；
d、同时通过观察孔观察有无连续神经阻滞导管表面设有的有色环形标记；
e、连续神经阻滞导管输送到预定位置后，按压按压块，将连续神经阻滞导管固定，将输送鞘管向按压块方向移动，当输送鞘管朝向按压块的一端抵达环状限位凸起位置时，加大推力使输送鞘管朝向按压块的一端越过环状限位凸起继续向按压块方向移动直至输送鞘管内的凸起与连续神经阻滞导管完全脱离；
f、退针，完成置管。
 有益效果
本发明的连续神经阻滞导管输送系统，具备以下有益效果：结构简单，体积小，操作方便，适应性强，通过输送器和输送鞘管紧密包裹连续神经阻滞导管，给予支撑力，使导管不会弯折，便于置管；通过输送鞘管和刻度的配合，可以精确控制连续神经阻滞导管的输送距离，达到精确置管的目的；连续神经阻滞导管输送至预定位置后，通过输送器将连续神经阻滞导管和输送鞘管内的凸起间隔开，便于退针。
 附图说明
图1为本发明的结构示意图；
图2为图1的分解图；
图3为图1中B处的放大图；
图4为图1中C处的放大图；
图5为本发明的A-A向剖面图；
图6为本发明实施例二的结构示意图。
图中：1、穿刺针；2、输送器；3、手柄；4、连接头；5、连接针；6、输送鞘管；7、连续神经阻滞导管；8、通槽；9、按压块；10、喇叭口；11、环套；12、连杆；13、凸起；14、倒角；15、环状限位凸起；16、观察孔；17、有色环形标记；18、透光孔；601、第一部件；602、第二部件；603、J形滑槽；604、J形卡块。
 本发明的最佳实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一：
如图1-5所示，一种连续神经阻滞导管输送系统，包括中空的穿刺针1和管状输送器2，穿刺针1远离针尖一端设有手柄3，手柄3远离穿刺针1针尖一侧固定连接有中空的连接头4，连接头4内套接有连接针5，连接针5的表面与连接头4的内壁活动连接，且二者之间保持一定的摩擦力，可有效防止连接针5滑脱，进而避免输送器2滑脱，连接针5远离连接头4一端与输送器2的一端固定连接，输送器2的另一端套接有输送鞘管6，输送鞘管6与输送器2滑动连接，输送鞘管6内套接有连续神经阻滞导管7，连续神经阻滞导管7依次贯穿输送鞘管6、输送器2和连接针5并延伸至穿刺针1内，连续神经阻滞导管7与输送鞘管6、输送器2、连接针5和穿刺针1均滑动连接，输送器2的表面开设有通槽8，通槽8内活动设有按压块9。
本实施方案中，按压块9与连续神经阻滞导管7的表面保持一定的间距，连接针5与输送器2一体成型，连接针5也可以通过螺纹连接结构或热熔焊接的方式与输送器2固定连接，输送器2和输送鞘管6均由硬质材料制成，通过输送器2和输送鞘管6的配合，连续神经阻滞导管7在输送器2和输送鞘管6内部滑动，输送器2和输送鞘管6紧密包裹连续神经阻滞导管7，给予支撑力，使连续神经阻滞导管7不易弯折，便于将柔软的连续神经阻滞导管7输送至穿刺针1内，进而输送至患者体内，便于置管。
具体的，输送器2表面设有至少一根限位线10，限位线10的另一端与输送鞘管6的表面固定连接。
本实施方案中，限位线10拉直时，输送鞘管6朝向按压块9一端依然套接在输送器2远离连接针5一端，通过设置限位线10，便于对输送鞘管6进行限位，避免其与输送器2脱离。
具体的，输送器2的表面套接有环套11，环套11的表面固定连接有连杆12，连杆12的另一端与按压块9的顶部固定连接。
本实施方案中，通过环套11和连杆12便于固定按压块9。
具体的，输送器2的表面开设有观察孔16，连续神经阻滞导管7表面设有有色环形标记17，有色环形标记17到连续神经阻滞导管7最前端的距离等于观察孔16到穿刺针1针尖的距离。
本实施方案中，观察孔16位于输送器2的表面、环套11和连接针5之间，有色标记环17的宽度不小于观察孔或透光孔的直径，有色标记环17的颜色为亮色系颜色，如绯红、亮橙、金黄、翠绿等，通过设置观察孔16可以实时查看连续神经阻滞导管7表面是否有有色标记环17，当在观察孔16内观察到有色环形标记17时，即当有色环形标记17位于观察孔16处时，连续神经阻滞导管7前端与穿刺针1针尖前端正好平齐。
具体的，输送器2的表面、与观察孔16相对的一侧还可以开设有透光孔18。
本实施方案中，观察孔16和透光孔18以输送器2的中心线为对称轴对称设置，通过设置透光孔18便于增强输送器2内部的亮度，进而增强观察孔内的亮度，便于观察有色环形标记17。
具体的，输送器2的表面设有刻度，刻度位于输送器2靠近输送鞘管6一段的表面上，输送器2的表面设有环状限位凸起，限位凸起15位于刻度的零刻度，输送鞘管6的长度不大于按压块9远离连接针5的侧面到输送器2远离连接针5一端端面的长度，限位凸起15的外径小于输送鞘管6的内径。
本实施方案中，限位凸起15的外径为输送鞘管6内径的三分之二，输送器2表面的刻度为毫米刻度，本实施例中的刻度长为40mm，该刻度以限位凸起15为零刻度并向远离按压块9方向延伸，压住按压块9，将输送鞘管6朝向按压块9一端推送至预定的刻度位置，如30mm，调节好以后，松开压块9，向前推送输送鞘管6朝向按压块9的一端至零刻度，在环状限位凸起15的阻碍下，输送鞘管6朝向按压块9的一端不能轻易越过零刻度，由于输送鞘管6内的凸起13对连续神经阻滞导管7的夹持作用，输送鞘管6带动连续神经阻滞导管7向穿刺针1方向移动30mm，实现了连续神经阻滞导管7的精确输送，可以精确控制连续神经阻滞导管前端送入体内的深度，还可以根据每次输送的长度和输送次数计算出连续神经阻滞导管7的输送长度。
具体的，输送鞘管6的内壁上设有若干弹性凸起13，凸起13的表面与连续神经阻滞导管7的表面接触且二者之间保持一定的摩擦力。
本实施方案中，凸起13的表面与连续神经阻滞导管7的表面之间的摩擦力小于穿破胸膜的力，凸起13为弹性体，凸起13的截面为三角形或弧形，凸起13弹性优良，受力变形，便于输送器2在输送鞘管6的内部滑动，还便于输送鞘管6夹持连续神经阻滞导管7，连续神经阻滞导管7被输送鞘管6内的凸起13夹持，会随输送鞘管6移动。
具体的，按压块9朝向连续神经阻滞导管7的侧面为与连续神经阻滞导管7相适配的弧形，且该侧面为防滑面，输送鞘管6的外壁表面为防滑面。
本实施方案中，按压块9和输送鞘管6的外壁表面均设有防滑硅胶或防滑纹。
具体的，连杆12为弹性杆。
本实施方案中，连杆的形状为弧形或Π形，便于按压按压块9，并在手指松开时使按压块9复位与连续神经阻滞导管7脱离接触。
具体的，穿刺针1内腔靠近连接头一端和输送鞘管6远离输送器2一端内壁均设有倒角14，输送器2位于输送鞘管6内部一端内壁设有倒角14。
本实施方案中，设置倒角14，便于连续神经阻滞导管7插入。
本发明还提供了一种连续神经阻滞导管输送方法，包括以下步骤：
a、穿刺针1穿刺好后，通过连接头4和连接针5将输送器2与穿刺针1连接，然后将输送鞘管6从输送器2远离连接针5一端向连接针5方向移动，直至输送鞘管6远离连接针5一端的端面越过输送器2远离连接针5一端的端面；
b、将连续神经阻滞导管7插入输送器2至按压块9的位置处，根据连续神经阻滞导管7需要输送的长度，按压按压块9，按压块9与连续神经阻滞导管7的表面挤压接触，使连续神经阻滞导管7固定，移动输送鞘管6朝向按压块9一端到预定刻度处，如30mm处；
c、松开按压块9，将输送导管6向按压块9方向推送至零刻度，在环状限位凸起15的阻碍下，输送鞘管6朝向按压块9的一端不能轻易越过零刻度，由于输送鞘管6内的凸起13对连续神经阻滞导管7的夹持作用，输送导管6带动神经阻滞导管7向穿刺针1方向同步精确移动预定刻度的长度，如30mm长度，如此反复操作直至精确将连续神经阻滞导管7输送到预定位置；
d、同时通过观察孔16观察有无连续神经阻滞导管7表面设有的有色环形标记17；
e、连续神经阻滞导管7输送到预定位置后，按压按压块9，将连续神经阻滞导管7固定，将输送鞘管6向按压块9方向移动，当输送鞘管6朝向按压块9的一端抵达环状限位凸起15位置时，加大推力使输送鞘管6朝向按压块9的一端越过环状限位凸起15继续向按压块9方向移动直至输送鞘管6内的凸起13与连续神经阻滞导管7完全脱离；
f、退针，完成置管。
实施例二：
如图6所示，一种连续神经阻滞导管输送系统，包括中空的穿刺针1和管状输送器2，输送器2远离穿刺针1的一端套接有输送鞘管6，输送鞘管6包括可拆装的第一部件601和第二部件602，第一部件601和第二部件602均为半圆形管，第一部件601和第二部件602的内壁上均设有若干弹性凸起13，第一部件601和第二部件602卡扣连接形成输送鞘管6，第一部件601与第二部件602的接触面上设有至少一个向内凹陷的J形滑槽603，第二部件602与第一部件601的接触面上设有至少一个向外凸出的J形卡块604， J形卡块604与J形滑槽603对应设置，J形卡块604可活动卡接在J形滑槽603内，第一部件601和第二部件602通过J形卡块604卡接于J形滑槽603内进行连接，以实现输送鞘管6圆周向闭合；向前推动第一部件601，使J形卡块604从J形滑槽603内滑出，第一部件601与第二部件602分离，输送鞘管6分开成两片，与连续神经阻滞导管7分离，其他结构与实施例一相同。
综上所述，本发明的连续神经阻滞导管输送系统，通过输送器和输送鞘管紧密包裹连续神经阻滞导管，给予支撑力，使导管不会弯折，便于置管，提高了置管成功率，降低了置管风险。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (10)

  1. 连续神经阻滞导管输送系统，包括中空的穿刺针（1）和管状输送器（2），其特征在于：所述穿刺针（1）远离针尖一端设有手柄（3），所述手柄（3）远离穿刺针（1）针尖一侧固定连接有中空的连接头（4），所述连接头（4）内套接有连接针（5），所述连接针（5）远离连接头（4）一端与输送器（2）的一端固定连接，所述输送器（2）的另一端套接有输送鞘管（6），所述输送鞘管（6）内套接有连续神经阻滞导管（7），所述连续神经阻滞导管（7）依次贯穿输送鞘管（6）、输送器（2）和连接针（5）并延伸至穿刺针（1）内，所述输送器（2）的表面开设有通槽（8），所述通槽（8）内活动设有按压块（9）。
  2. 根据权利要求1所述的连续神经阻滞导管输送系统，其特征在于：所述输送器（2）表面设有至少一根限位线（10），所述限位线（10）的另一端与输送鞘管（6）的表面固定连接。
  3. 根据权利要求1所述的连续神经阻滞导管输送系统，其特征在于：所述输送器（2）的表面套接有环套（11），所述环套（11）的表面固定连接有连杆（12），所述连杆（12）的另一端与按压块（9）的顶部固定连接。
  4. 根据权利要求1所述的连续神经阻滞导管输送系统，其特征在于：所述输送器（2）的表面开设有观察孔（16），所述连续神经阻滞导管（7）表面设有有色环形标记（17），所述输送器（2）的表面、与观察孔（16）相对的一侧开设有透光孔（18）。
  5. 根据权利要求1所述的连续神经阻滞导管输送系统，其特征在于：所述输送器（2）的表面设有刻度，所述刻度位于输送器（2）靠近输送鞘管（6）一段的表面上，所述输送器（2）的表面设有环状限位凸起（15），所述限位凸起（15）位于刻度的零刻度，所述输送鞘管（6）的长度不大于按压块（9）远离连接针（5）的侧面到输送器（2）远离连接针（5）一端端面的长度，所述限位凸起（15）的外径小于输送鞘管（6）的内径。
  6. 根据权利要求1所述的连续神经阻滞导管输送系统，其特征在于：所述输送鞘管（6）的内壁上设有若干弹性凸起（13）。
  7. 根据权利要求1所述的连续神经阻滞导管输送系统，其特征在于：所述按压块（9）朝向连续神经阻滞导管（7）的侧面为与连续神经阻滞导管（7）相适配的弧形，且该侧面为防滑面，所述输送鞘管（6）的外壁表面为防滑面。
  8. 根据权利要求1所述的连续神经阻滞导管输送系统，其特征在于：所述穿刺针（1）内腔靠近连接头一端和输送鞘管（6）远离输送器一端均设有倒角（14），所述输送器（2）位于输送鞘管（6）内部一端设有倒角（14）。
  9. 根据权利要求1所述的连续神经阻滞导管输送系统，其特征在于：所述输送鞘管（6）包括可拆装的第一部件（601）和第二部件（602），所述第一部件（601）和第二部件（602）均为半圆形管，所述第一部件（601）和第二部件（602）卡扣连接形成输送鞘管（6），所述第一部件（601）与第二部件（602）的接触面上设有至少一个向内凹陷的J形滑槽（603），所述第二部件（602）与第一部件（601）的接触面上设有至少一个向外凸出的J形卡块（604）， 所述J形卡块（604）与J形滑槽（603）对应设置。
  10. 一种连续神经阻滞导管输送方法，其特征在于：所述方法包括以下步骤：
    a、穿刺针（1）穿刺好后，通过连接头4和连接针5将输送器2与穿刺针1连接，将输送鞘管（6）从输送器（2）远离连接针（5）一端向连接针（5）方向移动，直至输送鞘管（6）远离连接针（5）一端的端面越过输送器（2）远离连接针（5）一端的端面；
    b、将连续神经阻滞导管（7）插入输送器（2）至按压块（9）的位置处，根据连续神经阻滞导管（7）需要输送的长度，按压按压块（9）使连续神经阻滞导管（7）固定，移动输送鞘管（6）到预定刻度处；
    c、松开按压块（9），将输送导管（6）向按压块（9）方向推送至零刻度，输送导管（6）带动神经阻滞导管（7）向穿刺针（1）方向同步精确移动预定刻度的长度，如此反复操作直至精确将连续神经阻滞导管（7）输送到预定位置；
    d、同时通过观察孔（16）观察有无连续神经阻滞导管（7）表面设有的有色环形标记（17）；
    e、连续神经阻滞导管（7）输送到预定位置后，按压按压块（9），将连续神经阻滞导管（7）固定，将输送鞘管（6）向按压块（9）方向移动，当输送鞘管（6）朝向按压块（9）的一端抵达环状限位凸起位置时，加大推力使输送鞘管（6）朝向按压块（9）的一端越过环状限位凸起（15）继续向按压块（9）方向移动直至输送鞘管（6）内的凸起（13）与连续神经阻滞导管（7）完全脱离；
    f、退针，完成置管。
PCT/CN2021/084563 2021-02-03 2021-03-31 连续神经阻滞导管输送系统及方法 WO2022165967A1 (zh)

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