技术领域Technical Field
本发明涉及医疗器械技术领域，具体涉及一种等离子双极黏膜切开刀。The invention relates to the technical field of medical devices, and in particular to a plasma bipolar mucosal incision knife.
背景技术Background Art
内镜黏膜下剥离术(Endoscopic submucosal dissection,ESD)是指利用高频器械对大于2cm的病变进行黏膜下剥离的内镜微创技术。与传统外科手术相比，ESD在根治肿瘤的基础上，较好地保留消化道生理功能，明显改善了患者术后的生活质量，目前已成为了包括食管在内的消化道早期癌及癌前病变的首选治疗方法。Endoscopic submucosal dissection (ESD) is a minimally invasive endoscopic technique that uses high-frequency instruments to perform submucosal dissection on lesions larger than 2 cm. Compared with traditional surgical procedures, ESD can better preserve the physiological function of the digestive tract on the basis of radical tumor treatment, significantly improving the patient's quality of life after surgery. It has now become the preferred treatment for early digestive tract cancer and precancerous lesions, including esophageal cancer.
目前用于内镜粘膜下剥离术的高频刀按其电流形成回路方式可分为两类，一种是单极高频电刀，另一种是双极高频电刀。单极高频电刀的缺点是高频电流会通过人体大部份面积。而双极高频电刀的高频电流仅流经最小的人体组织区域，即仅流经病变组织周围，由于高频电流通过人体的面积小，且不会伤害粘膜肌层，被认为是最安全的高频电刀。但双极高频电刀也存在局限性，例如CN 106214247 A的专利，目前的双极高频电刀的产品设计很难保证在手术过程中活性电极与惰性电极同时与组织接触，尤其是在人体自然腔道一些难于操作的部位，很难保证电流回路的形成，导致切割不可靠且不稳定，直接影响手术的效率及病人的安全。可见，仍需改进切开刀来实现稳定可靠的切割，提高手术效率及保证病人的安全。The high-frequency knives currently used for endoscopic submucosal dissection can be divided into two categories according to the way their current forms a loop, one is a monopolar high-frequency electric knife, and the other is a bipolar high-frequency electric knife. The disadvantage of a monopolar high-frequency electric knife is that the high-frequency current will pass through a large area of the human body. The high-frequency current of a bipolar high-frequency electric knife only flows through the smallest area of human tissue, that is, only flows around the diseased tissue. Since the high-frequency current passes through a small area of the human body and does not damage the mucosal muscularis, it is considered to be the safest high-frequency electric knife. However, bipolar high-frequency electric knives also have limitations. For example, in the patent CN 106214247 A, the current product design of bipolar high-frequency electric knives is difficult to ensure that the active electrode and the inert electrode are in contact with the tissue at the same time during the operation, especially in some difficult-to-operate parts of the natural cavity of the human body. It is difficult to ensure the formation of a current loop, resulting in unreliable and unstable cutting, which directly affects the efficiency of the operation and the safety of the patient. It can be seen that there is still a need to improve the incision knife to achieve stable and reliable cutting, improve surgical efficiency and ensure patient safety.
发明内容Summary of the invention
本发明的目的在于提供一种等离子双极黏膜切开刀，以解决现有双极高频电刀难以保证在手术过程中活性电极与惰性电极同时与组织接触，以至无法形成电流回路，降低切割的稳定性和可靠性，影响手术的效率及病人的安全的问题。The purpose of the present invention is to provide a plasma bipolar mucosal incision knife to solve the problem that the existing bipolar high-frequency electric knife is difficult to ensure that the active electrode and the inert electrode are in contact with the tissue at the same time during the operation, so that a current loop cannot be formed, the stability and reliability of the cutting are reduced, and the efficiency of the operation and the safety of the patient are affected.
本发明解决上述技术问题的技术方案如下：The technical solution of the present invention to solve the above technical problems is as follows:
一种等离子双极黏膜切开刀，其包括：顺次连接的电极头、柔性连接管和手柄；A plasma bipolar mucosal incision knife comprises: an electrode head, a flexible connecting tube and a handle connected in sequence;
电极头包括活性电极、绝缘陶瓷头以及惰性电极，绝缘陶瓷头上沿周向设置第一卡接部，惰性电极上沿周向设置第二卡接部，活性电极可活动地设置于绝缘陶瓷头前端，惰性电极通过第二卡接部与第一卡接部之间的配合而固定设置于绝缘陶瓷头后端，惰性电极与绝缘陶瓷头之间形成供生理盐水流出的空隙。The electrode head includes an active electrode, an insulating ceramic head and an inert electrode. A first clamping portion is circumferentially arranged on the insulating ceramic head, and a second clamping portion is circumferentially arranged on the inert electrode. The active electrode can be movably arranged at the front end of the insulating ceramic head, and the inert electrode is fixedly arranged at the rear end of the insulating ceramic head by the cooperation between the second clamping portion and the first clamping portion. A gap is formed between the inert electrode and the insulating ceramic head for physiological saline to flow out.
优选的，绝缘陶瓷头上沿周向还设置有第三卡接部，第一卡接部和第三卡接部沿绝缘陶瓷头周向均匀间隔设置，第三卡接部与惰性电极的前端相抵接。Preferably, a third clamping portion is further provided on the circumferential upper edge of the insulating ceramic head, the first clamping portion and the third clamping portion are evenly spaced along the circumferential direction of the insulating ceramic head, and the third clamping portion abuts against the front end of the inert electrode.
优选的，第一卡接部为多个沿绝缘陶瓷头径向向外凸出的凸柱，第二卡接部为多个沿惰性电极周向均匀设置的L形缺口，第三卡接部为多个沿绝缘陶瓷头轴向延伸并沿径向向外凸出的脊梁。Preferably, the first clamping portion is a plurality of protruding columns protruding radially outward along the insulating ceramic head, the second clamping portion is a plurality of L-shaped notches uniformly arranged along the circumference of the inert electrode, and the third clamping portion is a plurality of ridges extending axially along the insulating ceramic head and protruding radially outward.
优选的，柔性连接管包括双腔管，绝缘陶瓷头包括管状的尾部，管状的尾部伸入双腔管的第一腔管内，双腔管的第二腔管内设置有第一钢丝，第一钢丝一端与惰性电极电性连接，另一端与负极线缆连接。Preferably, the flexible connecting tube includes a double-lumen tube, the insulating ceramic head includes a tubular tail portion, the tubular tail portion extends into the first lumen of the double-lumen tube, a first steel wire is arranged in the second lumen of the double-lumen tube, one end of the first steel wire is electrically connected to the inert electrode, and the other end is connected to the negative electrode cable.
优选的，柔性连接管还包括钢丝绳，绝缘陶瓷头内部中空，活性电极在绝缘陶瓷头内部以及双腔管的第一腔管内通过压接管与钢丝绳压接，钢丝绳的末端与第二钢丝压接，第二钢丝与正极线缆连接。Preferably, the flexible connecting tube also includes a steel wire rope, the insulating ceramic head is hollow inside, the active electrode is crimped to the steel wire rope through a crimping tube inside the insulating ceramic head and in the first cavity of the double cavity tube, the end of the steel wire rope is crimped to the second steel wire, and the second steel wire is connected to the positive cable.
优选的，柔性连接管还包括外部绝缘套管，外部绝缘套管套设于惰性电极的尾段，且惰性电极与外部绝缘套管之间形成过盈配合。Preferably, the flexible connecting tube further comprises an external insulating sleeve, which is sleeved on the tail section of the inertial electrode, and an interference fit is formed between the inertial electrode and the external insulating sleeve.
优选的，在柔性连接管外与手柄相接处还设置有软管，在双腔管外与手柄相接处还套设有金属件，金属件的外表面均匀设置多组沿径向朝外的倒刺，倒刺中的其中一部分将外部绝缘套管卡入软管内，倒刺中的剩余部分卡入手柄的外壳内。Preferably, a hose is provided outside the flexible connecting tube where it connects with the handle, and a metal piece is sleeved outside the double-lumen tube where it connects with the handle. A plurality of groups of radially outward barbs are evenly provided on the outer surface of the metal piece, and a part of the barbs clamps the external insulating sleeve into the hose, and the remaining part of the barbs clamps into the outer shell of the handle.
优选的，在软管内的第二钢丝外设置有第一钢管，在手柄内的第一钢管外设置有第二钢管。Preferably, a first steel tube is arranged outside the second steel wire in the hose, and a second steel tube is arranged outside the first steel tube in the handle.
优选的，手柄后端设有拉环，拉环与第二钢丝连接，手柄主体中空以形成滑轨，拉环沿滑轨前后滑动以带动活性电极从绝缘陶瓷头前端伸出或缩回。Preferably, a pull ring is provided at the rear end of the handle, the pull ring is connected to the second steel wire, the handle body is hollow to form a slide rail, and the pull ring slides back and forth along the slide rail to drive the active electrode to extend or retract from the front end of the insulating ceramic head.
优选的，绝缘陶瓷头的内部形成有限位台阶，活性电极在伸出状态下，压接管与限位台阶相抵；活性电极在缩回状态下，活性电极的头部被绝缘陶瓷头阻挡。Preferably, a limiting step is formed inside the insulating ceramic head, and when the active electrode is in an extended state, the crimping tube abuts against the limiting step; when the active electrode is in a retracted state, the head of the active electrode is blocked by the insulating ceramic head.
本发明具有以下有益效果：The present invention has the following beneficial effects:
1.精确切割与安全性提升：通过活性电极与惰性电极在生理盐水环境下产生等离子体进行切割，切割效果精准，并保证手术过程中活性电极与惰性电极同时与组织接触，形成稳定的电流回路，提高手术的安全性和患者恢复速度。1. Precise cutting and improved safety: The active electrode and the inert electrode are used to generate plasma for cutting in a saline environment. The cutting effect is precise and the active electrode and the inert electrode are in contact with the tissue at the same time during the operation to form a stable current loop, thereby improving the safety of the operation and the patient's recovery speed.
2.操作灵活性：活性电极的伸缩设计使得该器械能够在内镜引导下灵活进入体内深部组织进行操作。在未展开状态下，刀头体积小，易于通过狭窄通道，到达目标位置后再伸出电极进行切割，增加了手术的可操作性和适用范围。2. Operational flexibility: The telescopic design of the active electrode enables the device to flexibly enter deep tissues in the body for operation under endoscopic guidance. In the unfolded state, the blade is small in size and easy to pass through narrow channels. After reaching the target position, the electrode is extended for cutting, which increases the operability and scope of application of the operation.
3.结构稳定性与耐用性：绝缘陶瓷头与惰性电极的卡接结构设计，确保了电极的稳定定位，避免了手术过程中的松动，提高了器械的耐用性和可靠性。此外，外部绝缘套管与惰性电极的过盈配合以及金属件的倒刺固定机制进一步增强了整体结构的稳固性。3. Structural stability and durability: The clamping structure design of the insulating ceramic head and the inert electrode ensures the stable positioning of the electrode, avoids loosening during surgery, and improves the durability and reliability of the instrument. In addition, the interference fit between the external insulating sleeve and the inert electrode and the barb fixing mechanism of the metal parts further enhance the stability of the overall structure.
4.简易操控性：手柄设计包含拉环和滑轨机构，使得医生可以通过简单的手动操作控制活性电极的伸缩，无需复杂操作即可实现切割功能的启停，提升了手术效率和医生的操作便利性。4. Easy to operate: The handle design includes a pull ring and a slide rail mechanism, which allows the doctor to control the extension and retraction of the active electrode through simple manual operation, and the cutting function can be started and stopped without complicated operations, which improves the surgical efficiency and the doctor's operating convenience.
5.定位准确性：绝缘陶瓷头内部的限位台阶设计确保了活性电极在伸出状态下的位置精确，避免过度伸出造成意外损伤，同时也保证了在缩回状态时电极的妥善保护，延长了工具的使用寿命。5. Positioning accuracy: The limiting step design inside the insulating ceramic head ensures the accurate position of the active electrode when extended, avoiding accidental damage caused by excessive extension. It also ensures proper protection of the electrode when retracted, extending the service life of the tool.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明等离子双极黏膜切开刀的整体结构图；FIG1 is an overall structural diagram of a plasma bipolar mucosal incision knife according to the present invention;
图2为本发明活性电极在缩回状态下的电极头的结构图；FIG2 is a structural diagram of the electrode head of the active electrode of the present invention in a retracted state;
图3为本发明活性电极在伸出状态下的电极头的结构图；FIG3 is a structural diagram of the electrode head of the active electrode of the present invention in an extended state;
图4为本发明电极头的截面图；FIG4 is a cross-sectional view of an electrode tip of the present invention;
图5为本发明手柄与柔性连接管相接处的截面图；FIG5 is a cross-sectional view of the connection between the handle and the flexible connecting tube of the present invention;
图6为本发明手柄前半部分的截面图；Fig. 6 is a cross-sectional view of the front half of the handle of the present invention;
图7为本发明手柄中部的截面图；Fig. 7 is a cross-sectional view of the middle portion of the handle of the present invention;
图1至图7中所示附图标记分别表示为：1-电极头；11-活性电极；111-电极头部；112-钢丝绳；113-压接管；115-第一钢管；116-第二钢管；12-绝缘陶瓷头；121-第三卡接部；122-第一卡接部；13-惰性电极；131-第二卡接部；132-第一钢丝；133-第二钢丝；14-双腔管；15-外部绝缘套管；16-注水口；The reference numerals shown in Figs. 1 to 7 are respectively represented as follows: 1-electrode head; 11-active electrode; 111-electrode head; 112-steel wire rope; 113-pressing tube; 115-first steel tube; 116-second steel tube; 12-insulating ceramic head; 121-third clamping part; 122-first clamping part; 13-inert electrode; 131-second clamping part; 132-first steel wire; 133-second steel wire; 14-double-lumen tube; 15-external insulating sleeve; 16-water injection port;
2-柔性连接管；3-手柄；4-软管；5-金属件；6-稳定套；7-拉环；8-金属卡接结构；9-负极线缆；10-正极线缆；17-密封圈。2-flexible connecting tube; 3-handle; 4-hose; 5-metal parts; 6-stabilizing sleeve; 7-pull ring; 8-metal clamping structure; 9-negative cable; 10-positive cable; 17-sealing ring.
具体实施方式DETAILED DESCRIPTION
以下结合附图对本发明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，本领域技术人员在没有付出创造性劳动的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。The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.
低温等离子手术系统的手术温度能被精确控制在40～70℃范围内，具有安全性高、手术时间短、创伤小、术后恢复时间短等特点，因此近年来，其已广泛应用于耳鼻喉科、脊柱外科、妇科、肛肠科等疾病的治疗。等离子手术系统的基本原理是等离子能量流过工作电极和回路电极之间，通过生理盐水导电在电极周围形成高度聚集的等离子体蒸汽鞘层。等离子体鞘层内由大量带电粒子构成，带电粒子被电场加速后，产生足够大的能量并具有强氧化性，在低温下(40℃～70℃)打断构成靶组织细胞的分子键，使组织迅速分解成低分子量的分子和原子，从而在较低的温度下形成实时、高效的组织切割、消融效果。The operating temperature of the low-temperature plasma surgery system can be precisely controlled within the range of 40 to 70°C. It has the characteristics of high safety, short operation time, low trauma, and short postoperative recovery time. Therefore, in recent years, it has been widely used in the treatment of diseases such as otolaryngology, spinal surgery, gynecology, and anorectal surgery. The basic principle of the plasma surgery system is that the plasma energy flows between the working electrode and the loop electrode, and forms a highly concentrated plasma vapor sheath around the electrode through the conduction of physiological saline. The plasma sheath is composed of a large number of charged particles. After being accelerated by the electric field, the charged particles generate sufficient energy and have strong oxidizing properties. At low temperatures (40°C to 70°C), they break the molecular bonds that constitute the target tissue cells, causing the tissue to quickly decompose into low molecular weight molecules and atoms, thereby forming a real-time and efficient tissue cutting and ablation effect at a lower temperature.
鉴于等离子手术系统的诸多优点，本发明提出一种执行内镜粘膜下切除术的等离子双极黏膜切开刀，参照图1，其包括顺次连接的电极头1、柔性连接管2和手柄3，电极头1包括丝状的活性电极11、具有独特形状的绝缘陶瓷头12、能与绝缘陶瓷头12稳定配合的管状回路电极以及外部绝缘套管15。In view of the many advantages of the plasma surgical system, the present invention proposes a plasma bipolar mucosal cutter for performing endoscopic submucosal resection, referring to Figure 1, which includes an electrode head 1, a flexible connecting tube 2 and a handle 3 connected in sequence, the electrode head 1 includes a filamentary active electrode 11, an insulating ceramic head 12 with a unique shape, a tubular loop electrode that can stably cooperate with the insulating ceramic head 12, and an external insulating sleeve 15.
参照图2-4，绝缘陶瓷头12包括头部和管状的尾部，头部外表面包括两组沿周向均匀设置的第一卡接部122和第三卡接部121，其中，第三卡接部121为三个沿轴向延伸，并朝径向向外凸出的脊梁，第一卡接部122为三个朝径向向外凸出的凸柱，脊梁和凸柱在周向上均匀间隔设置，绝缘陶瓷头12管状的尾部卡入双腔管14的第一腔管内。绝缘陶瓷头12内部中空，活性电极11从绝缘陶瓷头12的头部伸入绝缘陶瓷头12内部，并通过压接管113(不锈钢材质)与钢丝绳112压接在一起，钢丝绳112延伸一段长度，其末端与第二钢丝133压接，第二钢丝133与正极线缆10连接，活性电极头部111的形状可以是D字形、T字形或宝塔形等，对此不作限制。2-4, the insulating ceramic head 12 includes a head and a tubular tail, and the outer surface of the head includes two groups of first clamping parts 122 and third clamping parts 121 uniformly arranged along the circumferential direction, wherein the third clamping part 121 is three ridges extending along the axial direction and protruding radially outward, and the first clamping part 122 is three convex columns protruding radially outward, and the ridges and the convex columns are uniformly spaced in the circumferential direction, and the tubular tail of the insulating ceramic head 12 is clamped into the first lumen of the double lumen tube 14. The insulating ceramic head 12 is hollow inside, and the active electrode 11 extends from the head of the insulating ceramic head 12 into the inside of the insulating ceramic head 12, and is crimped together with the steel wire 112 through the crimping tube 113 (stainless steel material), and the steel wire 112 extends a length, and its end is crimped with the second steel wire 133, and the second steel wire 133 is connected to the positive cable 10, and the shape of the active electrode head 111 can be D-shaped, T-shaped or pagoda-shaped, etc., without limitation.
参照图2-4，惰性电极13整体呈管状，其头部沿圆周方向均匀设置有三个第二卡接部131，其形状为L形的缺口，在与绝缘陶瓷头12装配之后，陶瓷头的第三卡接部121与惰性电极13的端面卡接，第一卡接部122卡入第二卡接部131内，惰性电极13的直径大于绝缘陶瓷头12的直径，因此二者之间形成空隙，供生理盐水流出。惰性电极13末端外扩，外部绝缘套管15套设于惰性电极13尾段区域，并且由于惰性电极13的外扩设计，能与外部绝缘套管15之间形成过盈配合，提高连接的稳固性。第一钢丝132设置于双腔管14的第二腔管内，其头部与惰性电极13连接，末端与负极线缆9连接。第一钢丝132、第二钢丝133及压接管113外还热缩有绝缘层，保证各部件之间的电气绝缘性。双腔管14、第一钢丝132、钢丝绳112及外部绝缘套管15共同组成柔性连接管2，既能保证柔韧度，也避免过软影响力的传导。Referring to Figures 2-4, the inert electrode 13 is tubular as a whole, and its head is evenly provided with three second clamping parts 131 along the circumferential direction, which are in the shape of an L-shaped notch. After being assembled with the insulating ceramic head 12, the third clamping part 121 of the ceramic head is clamped with the end face of the inert electrode 13, and the first clamping part 122 is clamped into the second clamping part 131. The diameter of the inert electrode 13 is larger than the diameter of the insulating ceramic head 12, so a gap is formed between the two for physiological saline to flow out. The end of the inert electrode 13 is expanded outward, and the external insulating sleeve 15 is sleeved on the tail section area of the inert electrode 13, and due to the outward expansion design of the inert electrode 13, an interference fit can be formed between the external insulating sleeve 15 to improve the stability of the connection. The first steel wire 132 is arranged in the second lumen of the double-lumen tube 14, and its head is connected to the inert electrode 13, and the end is connected to the negative cable 9. The first steel wire 132, the second steel wire 133 and the crimping tube 113 are heat-shrunk with an insulating layer to ensure electrical insulation between the components. The double-lumen tube 14, the first steel wire 132, the steel wire rope 112 and the external insulating sleeve 15 together form a flexible connecting tube 2, which can ensure flexibility and avoid the conduction of influence caused by being too soft.
参照图5，柔性连接管2伸入手柄3内，为避免手柄3端部对柔性连接管2内部的钢丝造成弯折而影响切开刀的正常使用，在与手柄3相接处的与钢丝绳112相连接的钢丝外压接一层钢管，并且在与手柄3相接处的柔性连接管2外还套设有一层起保护作用的软管4，软管4内的第二钢丝133外设置有第一钢管115，在手柄3内的第一钢管115外设置有第二钢管116。此外，在双腔管14外与手柄3相接处还套设金属件5，金属件5外表面均匀设置多组沿径向朝外的倒刺，倒刺一部分将外部绝缘套管15卡入软管4内，另一部分卡入手柄3的外壳内，能很好地固定外部绝缘套管15，避免其滑动，由于外部绝缘套管15在最前端与惰性电极13过盈配合，因此可进一步保证电极头各部件之间配合的稳固性。Referring to FIG5 , the flexible connecting tube 2 extends into the handle 3. To prevent the handle 3 end from bending the steel wire inside the flexible connecting tube 2 and affecting the normal use of the incision knife, a layer of steel pipe is crimped outside the steel wire connected to the steel wire rope 112 at the connection with the handle 3, and a layer of hose 4 for protection is also sheathed outside the flexible connecting tube 2 at the connection with the handle 3. A first steel pipe 115 is arranged outside the second steel wire 133 in the hose 4, and a second steel pipe 116 is arranged outside the first steel pipe 115 in the handle 3. In addition, a metal piece 5 is sheathed outside the double-lumen tube 14 at the connection with the handle 3. Multiple groups of barbs facing outward in the radial direction are evenly arranged on the outer surface of the metal piece 5. One part of the barbs clamps the external insulating sleeve 15 into the hose 4, and the other part clamps into the outer shell of the handle 3, which can well fix the external insulating sleeve 15 and prevent it from sliding. Since the external insulating sleeve 15 is interference-fitted with the inert electrode 13 at the front end, the stability of the fit between the various components of the electrode head can be further ensured.
参照图1、图6和图7，手柄3包括拉环7和注水口16，外部绝缘套管15和双腔管14之间形成供液体流过的通道，注水口16与该通道连通，拉环7与第二钢丝133连接，在手柄3内注水口16后方设置有密封圈17，避免手柄3漏水。由于钢丝偏细(直径仅为0.28mm，且柔性连接管2较长(用于肠道手术的为1950mm，胃手术的为1650mm)，为保证前后拉动拉环7时，拉力能很好地被传递到活性电极11处，在密封圈17后与钢丝绳112相连接的钢丝外又额外压接了一层钢管(即，此处的钢丝外包括两层钢管)，钢管外表面同样热缩有绝缘层。钢丝连同钢管向后延伸卡入拉环7内设置的金属卡接结构8内，在卡接位置处将钢管外热缩的绝缘层剥离，因此金属卡接结构8一端与钢管及第二钢丝133连接，另一端与正极线缆10连接，负极线缆9在柔性连接管2末端与双腔管14内的第一钢丝132连接。手柄3主体部分中空以形成滑轨，拉环7可沿滑轨前后滑动以带动活性电极11从绝缘陶瓷头12的前端伸出或缩回。在绝缘陶瓷头12内部形成有限位台阶，当活性电极11伸出一定距离后，压接的钢管与限位台阶相抵，阻止活性电极11继续伸出，当活性电极11缩回一定距离后，其头部被绝缘陶瓷头12阻挡而不能继续后撤。此外，在滑轨上套设有一稳定套6，稳定套6上设置供钢丝穿过的孔，其进一步保证活动过程的稳定性。在其他实施例中，也可以不设置该稳定套6。1, 6 and 7, the handle 3 includes a pull ring 7 and a water injection port 16, a channel for liquid to flow through is formed between the external insulating sleeve 15 and the double-lumen tube 14, the water injection port 16 is connected to the channel, the pull ring 7 is connected to the second steel wire 133, and a sealing ring 17 is provided behind the water injection port 16 in the handle 3 to prevent water leakage of the handle 3. Since the steel wire is relatively thin (only 0.28mm in diameter), and the flexible connecting tube 2 is relatively long (1950mm for intestinal surgery and 1650mm for gastric surgery), in order to ensure that the pulling force can be well transmitted to the active electrode 11 when the pull ring 7 is pulled forward and backward, an additional layer of steel pipe is crimped outside the steel wire connected to the steel wire rope 112 behind the sealing ring 17 (that is, the steel wire here includes two layers of steel pipes), and the outer surface of the steel pipe is also heat-shrunk with an insulating layer. The steel wire and the steel pipe extend backward and are clamped into the metal clamping structure 8 set in the pull ring 7. The heat-shrunk insulating layer on the outside of the steel pipe is peeled off at the clamping position. Therefore, one end of the metal clamping structure 8 is connected to the steel pipe and the second steel wire 133, and the other end is connected to the positive cable 10. The negative cable 9 is at The end of the flexible connecting tube 2 is connected to the first steel wire 132 in the double-lumen tube 14. The main part of the handle 3 is hollow to form a slide rail, and the pull ring 7 can slide back and forth along the slide rail to drive the active electrode 11 to extend or retract from the front end of the insulating ceramic head 12. A limiting step is formed inside the insulating ceramic head 12. When the active electrode 11 extends a certain distance, the crimped steel pipe abuts against the limiting step to prevent the active electrode 11 from continuing to extend. When the active electrode 11 retracts a certain distance, its head is blocked by the insulating ceramic head 12 and cannot continue to retreat. In addition, a stabilizing sleeve 6 is sleeved on the slide rail, and a hole for the steel wire to pass through is provided on the stabilizing sleeve 6, which further ensures the stability of the activity process. In other embodiments, the stabilizing sleeve 6 may not be provided.
在行内镜黏膜下剥离术时，切割组织做好标记之后，将等离子双极黏膜切开刀通过内镜伸入到待切割组织处，在此过程中，为避免刮伤内窥镜以及避免损伤活性电极11(直径为0.3mm)，需保持活性电极11处于缩回状态；之后，可以接入电能并通入生理盐水，通过拉环7将活性电极11推出，通过活性电极11产生的等离子体切割目标组织。手术过程中，生理盐水充满整个手术部位，活性电极11及惰性电极13始终能充分与生理盐水接触，产生足量且稳定的等离子体，以实现稳定的切割，此外，生理盐水还能实时冲洗手术可能产生的血，保证手术视野的清晰。During endoscopic submucosal dissection, after marking the cut tissue, the plasma bipolar mucosal cutter is inserted through the endoscope into the tissue to be cut. During this process, in order to avoid scratching the endoscope and damaging the active electrode 11 (with a diameter of 0.3 mm), the active electrode 11 needs to be kept in a retracted state; after that, electrical energy can be connected and physiological saline can be introduced, and the active electrode 11 can be pushed out through the pull ring 7, and the target tissue can be cut by the plasma generated by the active electrode 11. During the operation, the physiological saline fills the entire surgical site, and the active electrode 11 and the inert electrode 13 can always be fully in contact with the physiological saline to generate sufficient and stable plasma to achieve stable cutting. In addition, the physiological saline can also flush the blood that may be generated during the operation in real time to ensure a clear surgical field.
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410879477.5ACN118873241A (en) | 2024-07-02 | 2024-07-02 | A plasma bipolar mucosal incision knife |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410879477.5ACN118873241A (en) | 2024-07-02 | 2024-07-02 | A plasma bipolar mucosal incision knife |
| Publication Number | Publication Date |
|---|---|
| CN118873241Atrue CN118873241A (en) | 2024-11-01 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410879477.5APendingCN118873241A (en) | 2024-07-02 | 2024-07-02 | A plasma bipolar mucosal incision knife |
| Country | Link |
|---|---|
| CN (1) | CN118873241A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119488352A (en)* | 2024-12-02 | 2025-02-21 | 江苏力克医疗科技有限公司 | A plasma tissue dissociation knife |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2538283Y (en)* | 2002-03-28 | 2003-03-05 | 常州市智业医疗仪器研究所 | Anastomotic cutting case for anastomat |
| CN108272503A (en)* | 2018-03-07 | 2018-07-13 | 南京微创医学科技股份有限公司 | It is a kind of can binary channels fluid injection bipolar high frequency electric knife |
| CN110464452A (en)* | 2019-08-30 | 2019-11-19 | 珠海市司迈科技有限公司 | A kind of ear-nose-throat department plasma procedures electrode |
| CN209678666U (en)* | 2019-02-12 | 2019-11-26 | 袁建敏 | A kind of orthopaedics multipurpose guid needle |
| CN217611365U (en)* | 2022-01-27 | 2022-10-21 | 深圳钮迈科技有限公司 | Ablation device and biopsy ablation device |
| CN115590601A (en)* | 2021-06-28 | 2023-01-13 | 深圳市美好创亿医疗科技股份有限公司（Cn） | High-frequency incision knife |
| CN219331745U (en)* | 2022-10-28 | 2023-07-14 | 南京友德邦医疗科技有限公司 | Disposable Y-type connector |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2538283Y (en)* | 2002-03-28 | 2003-03-05 | 常州市智业医疗仪器研究所 | Anastomotic cutting case for anastomat |
| CN108272503A (en)* | 2018-03-07 | 2018-07-13 | 南京微创医学科技股份有限公司 | It is a kind of can binary channels fluid injection bipolar high frequency electric knife |
| CN209678666U (en)* | 2019-02-12 | 2019-11-26 | 袁建敏 | A kind of orthopaedics multipurpose guid needle |
| CN110464452A (en)* | 2019-08-30 | 2019-11-19 | 珠海市司迈科技有限公司 | A kind of ear-nose-throat department plasma procedures electrode |
| CN115590601A (en)* | 2021-06-28 | 2023-01-13 | 深圳市美好创亿医疗科技股份有限公司（Cn） | High-frequency incision knife |
| CN217611365U (en)* | 2022-01-27 | 2022-10-21 | 深圳钮迈科技有限公司 | Ablation device and biopsy ablation device |
| CN219331745U (en)* | 2022-10-28 | 2023-07-14 | 南京友德邦医疗科技有限公司 | Disposable Y-type connector |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119488352A (en)* | 2024-12-02 | 2025-02-21 | 江苏力克医疗科技有限公司 | A plasma tissue dissociation knife |
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