WO2021008448A1 - 牵引芯以及用于内窥镜手术的牵引装置 - Google Patents

牵引芯以及用于内窥镜手术的牵引装置 Download PDF

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Publication number
WO2021008448A1
WO2021008448A1 PCT/CN2020/101251 CN2020101251W WO2021008448A1 WO 2021008448 A1 WO2021008448 A1 WO 2021008448A1 CN 2020101251 W CN2020101251 W CN 2020101251W WO 2021008448 A1 WO2021008448 A1 WO 2021008448A1
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WO
WIPO (PCT)
Prior art keywords
traction
core
rear end
outer tube
endoscopic surgery
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PCT/CN2020/101251
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English (en)
French (fr)
Inventor
张强
Original Assignee
张强
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Publication of WO2021008448A1 publication Critical patent/WO2021008448A1/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
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
    • A61B2017/0225—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery flexible, e.g. fabrics, meshes, or membranes

Definitions

  • the present invention relates to the field of endoscopic surgery, in particular to a traction core, and a traction device for endoscopic surgery.
  • the traction core is applied to the traction device.
  • the minimally invasive endoscopic technique is less traumatic, simple and quick, but there are limitations.
  • the endoscopes used in minimally invasive surgery under endoscopy are flexible endoscopes and single-port endoscopes.
  • the operation of the endoscopist is similar to that of a single-arm operation, so this is not as good as surgery and laparoscopic surgery in the multi-channel arms. Flexibility and maneuverability under operation.
  • Tissue traction device can solve this limitation well. Through tissue traction, the surgical site is fully exposed, which can improve the efficiency of surgery and reduce the risk of surgery. This helps more endoscopic operating rooms to master and proficiently perform endoscopy. Minimally invasive surgery will benefit more patients. Although some endoscopic surgical tissue traction devices have appeared in the clinic, they all have limitations, especially the limited use range and poor maneuverability, and it is difficult to popularize. Through the device described in this patent, these limitations are solved, and the endoscopic surgery can be effectively assisted by tissue traction, and the endoscopic surgery can be completed more safely and effectively.
  • the present invention provides a traction core, which includes a core body, the core body includes a first body and a second body, the second body is located at the rear end of the first body, and the diameter of the second body is larger than the diameter of the first body.
  • the second body is formed with a second limiting portion, and the diameter of the second limiting portion is larger than the diameter of the second body.
  • the first body is formed with a first limiting portion, and the diameter of the first limiting portion is larger than the diameter of the first body.
  • the rear end of the core body is formed with a third limiting portion, and the diameter of the third limiting portion is larger than the diameter of the rear end of the core body.
  • a large ring is arranged at the front end of the core body, and a small ring is arranged at the large ring.
  • a plurality of small rings are arranged at the front end of the core body.
  • the hardness of the second body is greater than the hardness of the first body.
  • the core body includes a third body, the third body is located at the rear end of the second body, and the diameter of the third body is larger than the diameter of the second body.
  • the present invention provides a traction device for endoscopic surgery, which includes a first handle, a sliding part, an outer tube, and a traction core.
  • the outer tube is located at the front end of the first handle, and a sliding part capable of moving the sliding part is formed in the first handle. Slot, the traction core passes through the outer tube, and the rear end of the traction core is installed on the sliding part.
  • the sliding part is formed with a first through hole through which the traction core can pass.
  • the traction core can be drawn out from the rear end of the sliding part.
  • the front end of the sliding part is formed with two first mounting parts, a fourth limiting part is arranged between the two first mounting parts, and the fourth limiting part is formed with a second through hole through which the traction core can pass.
  • the fourth limiting part prevents the traction core from coming off the front end of the sliding part.
  • a fifth limiting portion is arranged at the rear end of the sliding portion, and the fifth limiting portion prevents the traction core from falling out of the rear end of the sliding portion.
  • the front end of the first handle is arranged with a second mounting part, and the outer tube is arranged at the second mounting part.
  • the first handle includes two first side plates, the two first side plates are arranged oppositely, and the area between the two first side plates is a sliding groove.
  • a bottom cover is arranged at the rear end of the first handle.
  • the inner wall of the front end of the outer tube is formed with a sixth limiting portion.
  • the invention provides a traction device for endoscopic surgery, which includes a third handle, an outer tube and a traction core.
  • the outer tube is located at the front end of the third handle, and the traction core passes through the outer tube and the third handle.
  • a pull ring is arranged at the rear end of the traction core.
  • the present invention provides a traction device for endoscopic surgery, which includes a fourth handle, an outer tube, an inner tube, and a traction core.
  • the outer tube is located at the front end of the fourth handle, the inner tube passes through the outer tube and the fourth handle, and the traction core Through the inner tube.
  • the rear end of the inner tube is formed with a seventh limiting portion.
  • the rear end of the traction core is equipped with a hand-held part.
  • the handle is formed with a mounting groove for fixing the rear end of the traction core.
  • the traction core has a structure of different thicknesses, the thicker part is harder, which is convenient for pushing and pulling, and the thinner part is softer, which is convenient for bending, ensuring the safety of pushing and pulling;
  • the sliding part in the traction device is designed to facilitate the pushing and pulling of the traction core during surgery;
  • the traction device is designed to pass through the outer tube and the third handle in turn.
  • the structure is simple and easy to operate, and the traction core can be drawn out or inserted flexibly according to surgical needs;
  • the traction device is designed to achieve multi-stage expansion and contraction of the traction core, inner tube and outer tube. It is convenient to adjust the hardness of the outer tube and the bending of the front end of the traction core during the operation.
  • the invention has reasonable structure, can realize tissue traction more safely and effectively to expose the surgical field of vision, effectively assists in completing endoscopic surgery, and can be widely used in the field of endoscopic surgery.
  • Figure 1 is a structural diagram of the traction core in the first embodiment
  • Figure 2 is a structural diagram of the traction core in the second embodiment
  • Figure 3 is a structural diagram of the traction core in the third embodiment
  • Figure 4 is a structural diagram of the traction core in the fourth embodiment
  • Figure 5 is a structural diagram of the front end of a traction core with a large ring and a small ring;
  • Figure 6 is a structural diagram of the front end of a traction core with multiple small rings
  • Figure 7 is a structural diagram of the traction device in the first embodiment
  • Figure 8 is an exploded view of the structure in Figure 7;
  • Figure 9 is an internal structure diagram of the traction device in the first embodiment
  • Figure 10 is an exploded view of the traction device in the second embodiment
  • Figure 11 is an internal structure diagram of the traction device in the second embodiment
  • Figure 12 is a partial view of area A in Figure 11;
  • Figure 13 is a partial view of area B in Figure 11;
  • Figure 14 is a structural diagram of the first handle
  • Figure 15 is a left side view of the structure in Figure 14;
  • Figure 16 is a front view of the second mounting part
  • Figure 17 is a left view of the structure in Figure 16;
  • Figure 18 is a top view of the structure in Figure 16;
  • Figure 19 is a structural diagram of the second mounting part
  • Figure 20 is a front view of the bottom cover
  • Figure 21 is a left side view of the structure in Figure 20;
  • Figure 22 is a top view of the structure in Figure 20;
  • Figure 23 is a structural diagram of the bottom cover
  • Figure 24 is a front view of the sliding part
  • Figure 25 is a left side view of the structure in Figure 24;
  • Figure 26 is a top view of the structure in Figure 24;
  • Figure 27 is a structural diagram of the sliding part
  • Figure 28 is a structural diagram of the traction device in the third embodiment.
  • Figure 29 is an exploded view of the structure in Figure 28;
  • Figure 30 is the internal structure diagram of the traction device in the third embodiment
  • Figure 31 is a structural diagram of the traction device in the fourth embodiment.
  • Figure 32 is an exploded view of the structure in Figure 31;
  • Figure 33 is a diagram of the internal structure of the traction device in the fourth embodiment.
  • Figure 34 is a partial view of area C in Figure 33;
  • Fig. 35 is a partial view of area D in Fig. 33;
  • Figure 36 is a schematic diagram of the head structure when the traction device pulls the tissue
  • Figure 37 is the second schematic diagram of the head structure when the traction device pulls the tissue
  • Fig. 38 is a structural diagram of the handheld part.
  • the invention relates to a traction core.
  • the traction core is slender, elastic, bendable, and not easily deformed.
  • the traction core includes a core body.
  • the core body includes a first body 11 and a second body 12.
  • the second body 12 is located at the rear end of the first body 11, and the front end of the first body 11 is the front end of the core body.
  • the length of the second body 12 is greater than the length of the first body 11, and the diameter of the second body 12 is greater than the diameter of the first body 11.
  • the hardness of the second body 12 is greater than that of the first body 11.
  • the first body 11 is softer and thinner, which is convenient for bending and adjusting the position of the traction tissue during surgery and preventing tissue damage.
  • the second body 12 is harder, which is convenient for pushing and traction during surgery. core.
  • the diameter involved in the present invention can be regarded as the diameter of a circle, or as the diameter of the circumscribed circle where the structure described is located.
  • the second body 12 is formed with a second limiting portion 13, and the diameter of the second limiting portion 13 is larger than the diameter of the second body 12.
  • the first body 11 is formed with a first limiting portion 14, and the diameter of the first limiting portion 14 is larger than the diameter of the first body 11.
  • the rear end of the core body is formed with a third limiting portion 15, and the diameter of the third limiting portion 15 is larger than the diameter of the rear end of the core body.
  • the rear end of the core body is the first The rear end of the second body 12 and the third limiting portion 15 are located at the rear end of the second body 12.
  • a large ring 16 is arranged on the front end of the core body, a small ring 17 is arranged on the large ring 16, and the large ring 16 is arranged on the front end of the first body 11.
  • a plurality of small rings 17 are arranged at the front end of the core body, and each small ring 17 is arranged at the front end of the first body 11.
  • the core body includes a third body 33, the third body 33 is located at the rear end of the second body 12, the diameter of the third body 33 is greater than the diameter of the second body 12, and the hardness of the third body 33 is greater than that of the For the hardness of the body 12, the design of the traction core is a multi-stage structure with different hardness, which is convenient to push the traction core during the operation, effectively realizes the traction and ensures the safety during the traction process.
  • the rear end of the core body is the rear end of the third body 33, and the third limiting portion 15 is located at the rear end of the third body 33.
  • the invention relates to a traction device used for endoscopic surgery, and the traction device is used for traction tissue.
  • the traction device includes a first handle, a sliding part 18, an outer tube 19, and a traction core.
  • the outer tube 19 is located at the front end of the first handle.
  • the outer tube 19 has a small outer diameter and is flexible, flexible, and not easy to be compressed due to pressure.
  • a sliding groove capable of moving the sliding part 18 is formed in the first handle, the traction core passes through the outer tube 19, and the rear end of the traction core is installed on the sliding part 18.
  • the sliding part 18 moves in the sliding groove to drive the traction core to expand and contract in the outer tube 19.
  • the first body 11 of the traction core can extend from the front end of the outer tube 19, and the traction core is fixed with the tissue to be traction through the endoscopic tissue clip.
  • the sliding part 18 adjusts the traction core in real time to pull or push the tissue of the surgical site to expose the surgical wound.
  • the second body 12 of the traction core is formed with a second limiting portion 13, and the diameter of the second limiting portion 13 is larger than the diameter of the second body 12.
  • the sliding portion 18 is formed with a first through hole through which the traction core can pass, and the rear end of the traction core is located in the first through hole, where the rear end of the traction core is the rear end of the second body 12.
  • the diameter of the second limiting portion 13 is smaller than the diameter of the first through hole. Therefore, the front end of the traction core can be inserted through the rear end port of the first through hole, and the rear end of the traction core can also be drawn out from the rear end of the sliding portion 18. Since the traction core can be inserted and withdrawn in real time, the traction core can be extracted or inserted as needed during the operation, and other specifications of the traction core can be replaced after extraction to meet the needs of the operation.
  • the traction core has a certain hardness, for some surgical sites, such as the deep colon, in order to ensure the safety of the operation, the traction core can be withdrawn first, the outer tube is first inserted into the deep colon, and then the traction core is inserted into the outer tube. The risk of conveying towing devices.
  • the front end of the sliding portion 18 is formed with two first mounting portions 20, and the two first mounting portions 20 are respectively located on both sides of the front end port of the first through hole.
  • a fourth limiting portion 21 is arranged between the two first mounting portions 20, and the two first mounting portions 20 are respectively formed with third through holes for mounting the ends of the fourth limiting portion 21.
  • the fourth limiting portion 21 is formed with a second through hole through which the traction core can pass. After the traction core passes through the second through hole, the second limiting portion 13 is located between the front end of the sliding portion 18 and the fourth limiting portion 21 between.
  • the diameter of the second through hole is smaller than the diameter of the second limiting portion 13, and the fourth limiting portion 21 prevents the traction core from escaping from the front end of the sliding portion 18.
  • a fifth limiting portion 22 is arranged at the rear end of the sliding portion 18, and the fifth limiting portion 22 is installed at the rear end of the sliding portion 18 by means of threads, snaps or sleeves, and the fifth limiting portion 22 is located at the port at the rear end of the first through hole, and the fifth limiting portion 22 prevents the traction core from escaping from the rear end of the sliding portion 18.
  • the traction core can be drawn out after the fifth limit part is removed, and the rear end of the traction core can be restricted in the sliding part 18 after the fifth limit part is installed.
  • the fifth limiting portion 22 can be designed as a cap, a sleeve 36 is formed at the rear end of the sliding portion 18, and the cap is sleeved on the sleeve 36.
  • the front end of the first handle is provided with a second mounting part 23, the outer tube 19 is arranged at the second mounting part 23, and the rear end of the outer tube 19 is screwed at the front end of the second mounting part 23.
  • the first handle includes two first side plates 24, the two first side plates 24 are arranged oppositely, and the area between the two first side plates 24 is a sliding groove.
  • the front parts of the two first side plates 24 are respectively fixed to the second mounting part 23 by buckles, the rear ends of the two first side plates 24 are connected as a whole, and the two first side plates are connected as an integral rear end forming There are perforations for the traction core to pass through.
  • a bottom cover 25 is arranged at the rear end of the first handle.
  • the bottom cover 25 is a hollow structure.
  • the bottom cover 25 is installed with the rear end of the first handle by means of snaps or threads.
  • the bottom cover 25 is formed with a Perforations for the traction core to pass through.
  • a large ring 16 is arranged at the front end of the traction core, and a small ring 17 is arranged on the large ring 16. Since the small ring 17 on the large ring 16 is not easily slipped by the endoscope clamp, after the traction device is transferred into the body, the small ring 17 is first clamped with the endoscope clamp to quickly send the traction device to the position of the tissue that needs traction And fixed, so the small ring 17 plays a role of guiding and pre-fixing. Then, the large ring 16 is fixed to the tissue to be traction through the endoscope clip to achieve further traction.
  • a plurality of small rings 17 are arranged at the front end of the traction core.
  • the traction device is additionally provided with the following structure on the basis of the first embodiment: the inner wall of the front end of the outer tube 19 is formed with a sixth limiting portion 26, and the sixth limiting portion 26 is a perforated ring structure.
  • a body 11 passes through the through hole of the sixth limiting portion 26; the first body 11 is formed with a first limiting portion 14, the diameter of the first limiting portion 14 is larger than the diameter of the first body 11, and the first limiting portion 14
  • the diameter of is larger than the diameter of the perforation of the sixth limiting portion 26, and the end surface of the sixth limiting portion 26 facing the front end port of the outer tube 19 is used to withstand the first limiting portion 14.
  • the sliding part 18 When the traction device in the second embodiment is in use, the sliding part 18 is moved backwards. After the first limiting part 14 abuts the sixth limiting part 26, the sliding part 18 continues to move backwards, and the traction core can drive the outer tube 19
  • the curved front end can increase the diversity of the direction of traction tissue during surgery and realize effective tissue traction.
  • the present invention relates to a traction device for endoscopic surgery, which can be regarded as the third embodiment.
  • the traction device includes a third handle 27, an outer tube 19 and a traction core.
  • the outer tube 19 is located at the front end of the third handle 27.
  • the outer tube 19 is screwed on the front end of the third handle 27.
  • the traction core passes through the outer tube 19 and
  • a pull ring 28 is arranged at the rear end of the traction core, through which the traction core can be pulled to expand and contract freely.
  • a big ring 16 is arranged at the front end of the traction core, and a small ring 17 is arranged on the big ring 16.
  • a big ring 16 is arranged at the front end of the traction core, and a small ring 17 is arranged on the big ring 16.
  • it can also be designed such that a plurality of small rings 17 are arranged at the front end of the traction core.
  • the core body includes a third body 33, the third body 33 is located at the rear end of the second body 12, the diameter of the third body 33 is greater than the diameter of the second body 12, and the hardness of the third body 33 is greater than that of the second body.
  • the design of the traction core is a multi-section structure with different hardness. The harder second body and the third body are convenient for pushing the traction core during surgery, and the softer first body ensures the safety of the traction process.
  • the present invention relates to a traction device for endoscopic surgery, which can be regarded as the fourth embodiment.
  • the traction device includes a fourth handle 29, an outer tube 19, an inner tube 30 and a traction core.
  • the outer tube 19 is located at the front end of the fourth handle 29, the inner tube 30 passes through the outer tube 19 and the fourth handle 29, and the traction core passes through the inner tube. 30.
  • the inner tube 30 is designed to achieve multi-stage expansion and contraction, and the hardness of the outer tube and the bending of the front end of the traction core are adjusted by the expandable inner tube 30.
  • the rear end of the inner tube 30 is formed with a seventh limiting portion 31, the diameter of the seventh limiting portion 31 is larger than the diameter of the perforation of the fourth handle 29, and the seventh limiting portion 31 prevents the inner tube 30 from The rear end enters the fourth handle 29.
  • the rear end of the core body is formed with a third limiting portion 15, and the diameter of the third limiting portion 15 is larger than the diameter of the rear end of the core body.
  • the rear end of the traction core is installed with a hand-held part 32, which is formed with a mounting groove 34 for fixing the rear end of the traction core.
  • the side wall of the mounting groove 34 is formed with a stepped surface 35.
  • the third limiting part 15 extends from one end of the mounting groove 34. After insertion, the stepped surface 35 abuts the third limiting portion 15 so that the third limiting portion 15 can only be taken out from the port of the installation groove 34.
  • the core body includes a third body 33, the third body 33 is located at the rear end of the second body 12, the diameter of the third body 33 is greater than the diameter of the second body 12, and the hardness of the third body 33 is greater than that of the second body.
  • the traction core is designed with multiple sections of different hardness structures, which is convenient for pushing the traction core during surgery.
  • a big ring 16 is arranged at the front end of the traction core, and a small ring 17 is arranged on the big ring 16.
  • a big ring 16 is arranged at the front end of the traction core, and a small ring 17 is arranged on the big ring 16.
  • it can also be designed such that a plurality of small rings 17 are arranged at the front end of the traction core.
  • the front end of the traction core is thin, and the other parts of the traction core are thick, and a small loop is designed to achieve effective tissue traction.

Abstract

牵引芯以及用于内窥镜手术的牵引装置，牵引芯包括芯本体，芯本体包括第一本体(11)和第二本体(12)，第二本体(12)位于第一本体(11)的后端，第二本体(12)的直径大于第一本体(11)的直径。牵引芯具有不同粗细的结构，较粗的部分较硬，方便推拉，较细的部分较软，方便弯曲和保证牵引的安全性；牵引装置中设计滑动部(18)便于手术中推拉牵引芯；牵引装置设计牵引芯依次穿过外管(19)和第三手柄(27)，牵引芯方便插入和抽出，结构简易方便操作；牵引装置设计牵引芯、内管(30)和外管(19)实现多级伸缩，手术时方便调整外管(19)的硬度和牵引芯前端的弯曲。牵引芯以及用于内窥镜手术的牵引装置结构合理，可更安全有效的实现组织牵引以暴露手术视野，有效的辅助完成内窥镜手术，可广泛应用于内窥镜手术领域。

Description

牵引芯以及用于内窥镜手术的牵引装置 技术领域
本发明涉及内窥镜手术领域，特别涉及牵引芯，以及用于内窥镜手术的牵引装置，牵引装置中应用了该牵引芯。
背景技术
随着内窥镜微创技术发展，一些消化道病变，比如早期消化道肿瘤，可以在内窥镜下微创切除。相对于外科手术，内窥镜微创技术创伤小及简单快捷，然而也存在局限。目前，内窥镜下微创手术使用的内镜属于软式内镜及单孔道内镜，内镜医师的操作类似于单臂操作，因此这不如外科手术及腹腔镜手术在多孔道的双臂操作下的灵活性及可操控性。
组织牵引装置可以很好的解决这一局限，通过组织牵拉使得手术部位充分暴露，能提高手术效率、降低手术风险，这有助于让更多内窥镜手术室掌握并熟练进行内窥镜微创手术，让更多患者获益。虽然临床上已经出现了一些内窥镜手术组织牵引装置，但都存在局限性，尤其使用范围受限与可操控性差，难以推广普及。通过本专利所述装置，以解决这些局限性，并且通过组织牵引有效地辅助内窥镜手术，更安全更有效地完成内窥镜手术。
发明内容
为解决上述技术问题，辅助内窥镜手术更安全有效的完成，本发明所采用的技术方案如下：
本发明提供牵引芯，其包括芯本体，芯本体包括第一本体和第二本体，第二本体位于第一本体的后端，第二本体的直径大于第一本体的直径。
进一步，第二本体成型有第二限位部，第二限位部的直径大于第二本体的直径。
进一步，第一本体成型有第一限位部，第一限位部的直径大于第一本体的直径。
进一步，芯本体的后端成型有第三限位部，第三限位部的直径大于芯本体后端的直径。
进一步，芯本体的前端布置有一大环，大环布置有一小环。
进一步，芯本体的前端布置有多个小环。
进一步，第二本体的硬度大于第一本体的硬度。
进一步，芯本体包括第三本体，第三本体位于第二本体的后端，第三本体的直径大于第二本体的直径。
本发明提供用于内窥镜手术的牵引装置，其包括第一手柄、滑动部、外管以及牵引芯，外管位于第一手柄的前端，第一手柄中成型有可供滑动部移动的滑动槽，牵引芯穿过外管，牵引芯的后端安装在滑动部。
进一步，滑动部成型有可供牵引芯穿过的第一通孔。
进一步，牵引芯可从滑动部的后端抽出。
进一步，滑动部的前端成型有两个第一安装部，两个第一安装部之间布置有第四限位部，第四限位部成型有可供牵引芯穿过的第二通孔，第四限位部防止牵引芯从滑动部的前端脱出。
进一步，滑动部后端布置有第五限位部，第五限位部防止牵引芯从滑动部的后端脱出。
进一步，第一手柄的前端布置有第二安装部，外管布置在第二安装部。
进一步，第一手柄包括两个第一侧板，两个第一侧板相对布置，两个第一侧板之间的区域为滑动槽。
进一步，两个第一侧板的后端连为一体。
进一步，第一手柄的后端布置有底盖。
进一步，外管前端的内壁成型有第六限位部。
本发明提供用于内窥镜手术的牵引装置，其包括第三手柄、外管和牵引芯，外管位于第三手柄的前端，牵引芯穿过外管和第三手柄。
进一步，牵引芯的后端布置有拉环。
本发明提供用于内窥镜手术的牵引装置，其包括第四手柄、外管、内管和牵引芯，外管位于第四手柄的前端，内管穿过外管和第四手柄，牵引芯穿过内管。
进一步，内管的后端成型有第七限位部。
进一步，牵引芯的后端安装有手持部。
进一步，手持部成型有用于固定牵引芯后端的安装槽。
有益效果：牵引芯具有不同粗细的结构，较粗的部分较硬，方便推拉，较细的部分较软，方便弯曲，保证了推拉的安全；牵引装置中设计滑动部便于手术中推拉牵引芯；牵引装置设计牵引芯依次穿过外管和第三手柄，结构简易方便操作，并且能灵活地根据手术需要将牵引芯抽出或插入；牵引装置设计牵引芯、内管和外管实现多级伸缩，手术时方便调整外管的硬度和牵引芯前端的弯曲。本发明结构合理，可更安全有效的实现组织牵引以暴露手术视野，有效的辅助完成内窥镜手术，可广泛应用于内窥镜手术领域。
附图说明
图1为实施例一中牵引芯的结构图；
图2为实施例二中牵引芯的结构图；
图3为实施例三中牵引芯的结构图；
图4为实施例四中牵引芯的结构图；
图5为具有大环和小环的牵引芯的前端的结构图；
图6为具有多个小环的牵引芯的前端的结构图；
图7为实施例一中牵引装置的结构图；
图8为图7中结构的分解图；
图9为实施例一中牵引装置的内部结构图；
图10为实施例二中牵引装置的分解图；
图11为实施例二中牵引装置的内部结构图；
图12为图11中A区域的局部视图；
图13为图11中B区域的局部视图；
图14为第一手柄的结构图；
图15为图14中结构的左视图；
图16为第二安装部的主视图；
图17为图16中结构的左视图；
图18为图16中结构的俯视图；
图19为第二安装部的结构图；
图20为底盖的主视图；
图21为图20中结构的左视图；
图22为图20中结构的俯视图；
图23为底盖的结构图；
图24为滑动部的主视图；
图25为图24中结构的左视图；
图26为图24中结构的俯视图；
图27为滑动部的结构图；
图28为实施例三中牵引装置的结构图；
图29为图28中结构的分解图；
图30为实施例三中牵引装置的内部结构图
图31为实施例四中牵引装置的结构图；
图32为图31中结构的分解图；
图33为实施例四中牵引装置的内部结构图；
图34为图33中C区域的局部视图；
图35为图33中D区域的局部视图；
图36为牵引装置牵拉组织时头部结构的示意图一；
图37为牵引装置牵拉组织时头部结构的示意图二；
图38为手持部的结构图。
具体实施方式
下面结合图1至图38对本发明做进一步的说明。
本发明涉及牵引芯，牵引芯为细长状，具有弹性，可弯曲，且不易变形。牵引芯包括芯本体，芯本体包括第一本体11和第二本体12，第二本体12位于第一本体11的后端，第一本体11的前端为芯本体的前端。第二本体12的长度大于第一本体11的长度，第二本体12的直径大于第一本体11的直径。第二本体12的硬度大于第一本体11的硬度，第一本体11较软较细，方便手术时弯曲调整牵拉组织的位置及防止损伤组织，第二本体12较硬，方便手术时推动牵引芯。
本发明中所涉及的直径可以视为圆的直径，也可以视为所描述结构所在外接圆的直径。
在某些实施例中，第二本体12成型有第二限位部13，第二限位部13的直径大于第二本体12的直径。
在某些实施例中，第一本体11成型有第一限位部14，第一限位部14的直径大于第一本体11的直径。
在某些实施例中，芯本体的后端成型有第三限位部15，第三限位部15的直径大于芯本体后端的直径，在这些实施例中，芯本体的后端即为第二本体12的后端，第三限位部15位于第二本体12的后端。
在某些实施例中，芯本体的前端布置有一大环16，大环16布置有一小环17，大环16布置在第一本 体11的前端。
在某些实施例中，芯本体的前端布置有多个小环17，各小环17布置在第一本体11的前端。
在某些实施例中，芯本体包括第三本体33，第三本体33位于第二本体12的后端，第三本体33的直径大于第二本体12的直径，第三本体33的硬度大于第二本体12的硬度，设计牵引芯为多段不同硬度的结构，方便手术时推动牵引芯，有效实现牵引及保证牵引过程中的安全性。在这些实施例中，芯本体的后端即为第三本体33的后端，第三限位部15位于第三本体33的后端。
本发明涉及用于内窥镜手术的牵引装置，牵引装置用于牵引组织。牵引装置包括第一手柄、滑动部18、外管19以及牵引芯，外管19位于第一手柄的前端，外管19的外径较小具有弹性，可弯曲，不容易因受压而被压瘪，第一手柄中成型有可供滑动部18移动的滑动槽，牵引芯穿过外管19，牵引芯的后端安装在滑动部18。滑动部18在滑动槽中移动可带动牵引芯在外管19中伸缩，牵引芯的第一本体11可从外管19的前端伸出，牵引芯通过内窥镜组织夹与需要牵引的组织固定，通过滑动部18实时调控牵引芯来牵拉或者推送手术部位的组织，以暴露手术创面。
在实施例一中，牵引芯的第二本体12成型有第二限位部13，第二限位部13的直径大于第二本体12的直径。
在实施例一中，滑动部18成型有可供牵引芯穿过的第一通孔，牵引芯的后端位于第一通孔，此处牵引芯的后端为第二本体12的后端。第二限位部13的直径小于第一通孔的直径，因此，牵引芯的前端可从第一通孔的后端端口插入，牵引芯的后端也可从滑动部18的后端抽出。由于牵引芯可以实时插入及抽出，因此手术时可以根据需要抽出或插入牵引芯，抽出后可更换其他规格的牵引芯，以适应手术需要。另外，由于牵引芯具有一定硬度，对于一些手术部位，比如深部结肠，为了保证操作安全，可先将牵引芯抽出，将外管先置入深部结肠，再将牵引芯插入外管，这避免了传送牵引装置的风险。
在实施例一中，滑动部18的前端成型有两个第一安装部20，两个第一安装部20分别位于第一通孔前端端口的两侧。两个第一安装部20之间布置有第四限位部21，两个第一安装部20分别成型有用于安装第四限位部21端部的第三通孔。第四限位部21成型有可供牵引芯穿过的第二通孔，牵引芯穿过第二通孔后，第二限位部13位于滑动部18的前端与第四限位部21之间。第二通孔的直径小于第二限位部13的直径，第四限位部21防止牵引芯从滑动部18的前端脱出。
在实施例一中，滑动部18后端布置有第五限位部22，第五限位部22通过螺纹或卡扣或者套接的方 式安装在滑动部18的后端，第五限位部22位于第一通孔后端的端口处，第五限位部22防止牵引芯从滑动部18的后端脱出。拆下第五限位部后可以抽出牵引芯，安装第五限位部后可以将牵引芯的后端限制在滑动部18中。
在实施例一中，第五限位部22可设计为一帽盖，滑动部18的后端成型有一套筒36，帽盖套在套筒36上。
在实施例一中，第一手柄的前端布置有第二安装部23，外管19布置在第二安装部23，外管19的后端通过螺纹的方式安装在第二安装部23的前端。
在实施例一中，第一手柄包括两个第一侧板24，两个第一侧板24相对布置，两个第一侧板24之间的区域为滑动槽。两个第一侧板24的前部分别通过卡扣与第二安装部23固定，两个第一侧板24的后端连为一体，且两个第一侧板连为一体的后端成型有可供牵引芯穿过的穿孔。
在实施例一中，第一手柄的后端布置有底盖25，底盖25为镂空结构，底盖25通过卡扣或螺纹的方式与第一手柄的后端安装，底盖25成型有一可供牵引芯穿过的穿孔。
在实施例一中，牵引芯的前端布置有大环16，大环16布置有一小环17。由于内镜夹夹住大环16上的小环17不易滑脱，在牵引装置被传送置体内后，先用内镜夹夹住小环17，将牵引装置快捷地送至需要牵引的组织的位置并且固定住，因此小环17起到引导与预固定的作用。然后通过内镜夹将大环16固定到需要牵引的组织上，以实现进一步牵引的作用。
在实施例一中也可设计为牵引芯的前端布置有多个小环17。
在实施例二中，牵引装置在实施例一的基础上增设有如下结构：外管19前端的内壁成型有第六限位部26，第六限位部26为一具有穿孔的环形结构，第一本体11穿过第六限位部26的穿孔；第一本体11成型有第一限位部14，第一限位部14的直径大于第一本体11的直径，且第一限位部14的直径大于第六限位部26穿孔的直径，第六限位部26上朝向外管19前端端口的端面用于顶住第一限位部14。
实施例二中的牵引装置在使用时，向后移动滑动部18，当第一限位部14抵住第六限位部26后，继续向后移动滑动部18，牵引芯可带动外管19的前端弯曲，可增加手术时牵引组织的方向的多样性，实现有效的组织牵引。
本发明涉及用于内窥镜手术的牵引装置，此可视为实施例三。牵引装置包括第三手柄27、外管19和牵引芯，外管19位于第三手柄27的前端，外管19通过螺纹的方式安装在第三手柄27的前端，牵引芯穿 过外管19和第三手柄27，牵引芯的后端布置有拉环28，通过拉环28可拉动牵引芯自由伸缩。
在实施例三中，牵引芯的前端布置有大环16，大环16布置有一小环17。或者也可设计为牵引芯的前端布置有多个小环17。
在实施例三中，芯本体包括第三本体33，第三本体33位于第二本体12的后端，第三本体33的直径大于第二本体12的直径，第三本体33的硬度大于第二本体12的硬度。设计牵引芯为多段不同硬度的结构，较硬的第二本体和第三本体方便手术时推动牵引芯，较软的第一本体保证了牵引过程的安全。
本发明涉及用于内窥镜手术的牵引装置，此可视为实施例四。牵引装置包括第四手柄29、外管19、内管30和牵引芯，外管19位于第四手柄29的前端，内管30穿过外管19和第四手柄29，牵引芯穿过内管30。通过设计内管30实现多级伸缩，通过可伸缩的内管30调整外管的硬度和牵引芯前端的弯曲。
在实施例四中，内管30的后端成型有第七限位部31，第七限位部31的直径大于第四手柄29的穿孔的直径，第七限位部31防止内管30的后端进入第四手柄29。
在实施例四中，芯本体的后端成型有第三限位部15，第三限位部15的直径大于芯本体后端的直径。牵引芯的后端安装有手持部32，手持部32成型有用于固定牵引芯后端的安装槽34，安装槽34的侧壁成型有一台阶面35，第三限位部15从安装槽34的一端插入后，台阶面35抵住第三限位部15，从而第三限位部15只能从安装槽34的端口取出。
在实施例四中，芯本体包括第三本体33，第三本体33位于第二本体12的后端，第三本体33的直径大于第二本体12的直径，第三本体33的硬度大于第二本体12的硬度，设计牵引芯为多段不同硬度的结构，方便手术时推动牵引芯。
在实施例四中，牵引芯的前端布置有大环16，大环16布置有一小环17。或者也可设计为牵引芯的前端布置有多个小环17。
上述四个实施例的牵引装置中，牵引芯的前端较细，牵引芯的其他部位较粗，设计小环，以实现有效的组织牵引。
以上结合附图对本发明的实施方式作了详细说明，但是本发明不限于上述实施方式，在所述技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。

Claims (24)

  1. 牵引芯，其特征在于：包括芯本体，芯本体包括第一本体(11)和第二本体(12)，第二本体(12)位于第一本体(11)的后端，第二本体(12)的直径大于第一本体(11)的直径。
  2. 根据权利要求1所述的牵引芯，其特征在于：第二本体(12)成型有第二限位部(13)，第二限位部(13)的直径大于第二本体(12)的直径。
  3. 根据权利要求1所述的牵引芯，其特征在于：第一本体(11)成型有第一限位部(14)，第一限位部(14)的直径大于第一本体(11)的直径。
  4. 根据权利要求1所述的牵引芯，其特征在于：芯本体的后端成型有第三限位部(15)，第三限位部(15)的直径大于芯本体后端的直径。
  5. 根据权利要求1所述的牵引芯，其特征在于：芯本体的前端布置有一大环(16)，大环(16)布置有一小环(17)。
  6. 根据权利要求1所述的牵引芯，其特征在于：芯本体的前端布置有多个小环(17)。
  7. 根据权利要求1所述的牵引芯，其特征在于：第二本体(12)的硬度大于第一本体(11)的硬度。
  8. 根据权利要求1所述的牵引芯，其特征在于：芯本体包括第三本体(33)，第三本体(33)位于第二本体(12)的后端，第三本体(33)的直径大于第二本体(12)的直径。
  9. 用于内窥镜手术的牵引装置，其特征在于：包括第一手柄、滑动部(18)、外管(19)以及如权利要求1至8任一项所述的牵引芯，外管(19)位于第一手柄的前端，第一手柄中成型有可供滑动部(18)移动的滑动槽，牵引芯穿过外管(19)，牵引芯的后端安装在滑动部(18)。
  10. 根据权利要求9所述的用于内窥镜手术的牵引装置，其特征在于：滑动部(18)成型有可供牵引芯穿过的第一通孔。
  11. 根据权利要求10所述的用于内窥镜手术的牵引装置，其特征在于：牵引芯可从滑动部(18)的后端抽出。
  12. 根据权利要求10所述的用于内窥镜手术的牵引装置，其特征在于：滑动部(18)的前端成型有两个第一安装部(20)，两个第一安装部(20)之间布置有第四限位部(21)，第四限位部(21)成型有可供牵引芯穿过的第二通孔，第四限位部(21)防止牵引芯从滑动部(18)的前端脱出。
  13. 根据权利要求12所述的用于内窥镜手术的牵引装置，其特征在于：滑动部(18)后端布置有第 五限位部(22)，第五限位部(22)防止牵引芯从滑动部(18)的后端脱出。
  14. 根据权利要求9所述的用于内窥镜手术的牵引装置，其特征在于：第一手柄的前端布置有第二安装部(23)，外管(19)布置在第二安装部(23)。
  15. 根据权利要求9所述的用于内窥镜手术的牵引装置，其特征在于：第一手柄包括两个第一侧板(24)，两个第一侧板(24)相对布置，两个第一侧板(24)之间的区域为滑动槽。
  16. 根据权利要求15所述的用于内窥镜手术的牵引装置，其特征在于：两个第一侧板(24)的后端连为一体。
  17. 根据权利要求9所述的用于内窥镜手术的牵引装置，其特征在于：第一手柄的后端布置有底盖(25)。
  18. 根据权利要求9所述的用于内窥镜手术的牵引装置，其特征在于：外管(19)前端的内壁成型有第六限位部(26)。
  19. 用于内窥镜手术的牵引装置，其特征在于：包括第三手柄(27)、外管(19)和如权利要求1或5或6或7或8所述的牵引芯，外管(19)位于第三手柄(27)的前端，牵引芯穿过外管(19)和第三手柄(27)。
  20. 根据权利要求19所述的用于内窥镜手术的牵引装置，其特征在于：牵引芯的后端布置有拉环(28)。
  21. 用于内窥镜手术的牵引装置，其特征在于：包括第四手柄(29)、外管(19)、内管(30)和如权利要求1或4或5或6或7或8所述的牵引芯，外管(19)位于第四手柄(29)的前端，内管(30)穿过外管(19)和第四手柄(29)，牵引芯穿过内管(30)。
  22. 根据权利要求21所述的用于内窥镜手术的牵引装置，其特征在于：内管(30)的后端成型有第七限位部(31)。
  23. 根据权利要求21所述的用于内窥镜手术的牵引装置，其特征在于：牵引芯的后端安装有手持部(32)。
  24. 根据权利要求23所述的用于内窥镜手术的牵引装置，其特征在于：手持部(32)成型有用于固定牵引芯后端的安装槽(34)。
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