CN219963042U

CN219963042U - Argon coagulation electrotome

Info

Publication number: CN219963042U
Application number: CN202320969698.2U
Authority: CN
Inventors: 寇鹏; 葛泉波; 张忠民
Original assignee: Leo Medical Co ltd
Current assignee: Leo Medical Co ltd
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-11-07
Anticipated expiration: 2033-04-26

Abstract

The utility model provides an argon coagulation electrotome which comprises an outer sheath tube, a hauling rope movably penetrating through the outer sheath tube, a protection tube fixed at the far end of the outer sheath tube, a handle seat fixed with the near end of the outer sheath tube, a catheter movably penetrating through the handle seat and fixed with the near end of the hauling rope, a ventilation liquid joint arranged on the handle seat, a gas-liquid cavity channel arranged in the ventilation liquid joint, an operating handle in sliding fit with the handle seat along the extending direction of the outer sheath tube, an electric joint arranged on the operating handle and connected with the catheter, a spring arranged in the outer sheath tube, a ring sleeve ring fixedly connected with the far end of the hauling rope and a conductive tube, wherein the conductive tube is arranged in the outer sheath tube and nested with the protection tube, and the near end of the conductive tube is fixedly connected with the far end of the spring. According to the utility model, the contact area of argon and the conductive tube is increased, the contact area of the conductive tube for ionizing the argon is increased, the uniformity of argon ionization is improved, the stability of argon coagulation is ensured, the hemostatic effect is better, and the operation efficiency is improved.

Description

Argon coagulation electrotome

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an argon coagulation electrotome.

Background

An Endoscopic Submucosal Dissection (ESD) is a new treatment means which appears in recent years, and is also a technology with good clinical application prospect, so that more early-stage digestive tract cancers can be completely resected under the endoscope at one time, and the pain of the open surgery and the resection of organs are avoided. Compared with the prior endoscopic treatment methods such as EMR (endoscopic Mucosalal Resec-tion), the ESD has the advantages that the ESD is small in wound, a patient can receive multiple treatments at multiple positions, a doctor can obtain a complete histopathological specimen for analysis, the tumor with larger area and irregular morphology or combined ulcers and scars can be subjected to more than 96% of excision rate, the recurrence probability is reduced, and the like.

The conventional ESD operation process requires operations such as resection range marking, injection swelling, mucosa incision and dissection, hemostasis, etc., so that the medical electrotome is a medical instrument necessary in the ESD operation; however, the hemostasis of the existing medical electrotome is generally realized by adopting a high-frequency electrocoagulation principle, and the purpose of coagulation is achieved by utilizing the heat effect generated by the action of high-frequency current on a human body, but perforation danger is easy to cause; argon coagulation is safer in clinic and better in effect than high-frequency coagulation, argon is ionized by using high-frequency current according to the argon electrocoagulation principle, and argon ions act on human tissues to achieve the purpose of coagulation. The argon coagulation of the existing medical electrotome is carried out by using the tip of the electrocoagulation electrode, the contact area between the tip of the electrocoagulation electrode and argon is small, so that the argon ionization is unstable, and the hemostatic effect is poor; therefore, a new argon coagulation electrotome is required to be designed, the argon coagulation structure of the new argon coagulation electrotome can improve the stability of argon coagulation, and the hemostatic effect is better and safer.

Disclosure of Invention

The utility model aims to provide an argon coagulation electrotome, which increases the contact area of argon and a conductive tube, increases the contact area of ionized argon of the conductive tube, improves the uniformity of ionization of the argon, ensures the stability of argon coagulation, has better hemostatic effect, and further improves the operation efficiency.

According to one aspect of the utility model, there is provided an argon coagulation electrotome comprising an outer sheath, a haulage rope movably penetrating through the outer sheath, a protection tube fixed at the distal end of the outer sheath, a handle seat fixed with the proximal end of the outer sheath, a catheter movably penetrating through the handle seat and fixed with the proximal end of the haulage rope, a ventilation liquid joint arranged on the handle seat, a gas-liquid cavity channel arranged in the ventilation liquid joint, an operation handle slidingly matched with the handle seat along the extending direction of the outer sheath, an electric joint arranged on the operation handle and connected with the catheter, a spring arranged in the outer sheath and a snare loop fixedly connected with the distal end of the haulage rope, and further comprising a conductive tube arranged in the outer sheath, wherein the protection tube is nested by the conductive tube, and the proximal end of the conductive tube is fixedly connected with the distal end of the spring.

Preferably, the protection tube comprises a hollow cylindrical section extending into the interior of the outer sheath tube and a hollow conical section extending integrally from the distal end of the hollow cylindrical section and located outside the outer sheath tube, wherein the inner diameter of the hollow cylindrical section is larger than that of the hollow conical section, the hollow cylindrical section is nested by the conductive tube, and the outer diameter of the conductive tube is larger than that of the hollow conical section.

Preferably, the proximal end of the conductive tube has a flare structure facing the outside of the outer sheath tube.

Preferably, the proximal end of the conductive tube is welded or glued or crimped to the distal end of the spring.

Preferably, the protection tube is a ceramic tube.

Preferably, the conductive tube is a hollow cylindrical tube.

Preferably, the ventilation liquid joint is used for being connected with a gas source or a liquid source, and the power-on joint is used for being connected with a power source.

Preferably, the device further comprises a cutter head, wherein the proximal end of the cutter head is fixedly connected with the distal end of the ring collar.

According to the utility model, the contact area of argon and the conductive tube is increased, the contact area of the conductive tube for ionizing the argon is increased, the uniformity of argon ionization is improved, the stability of argon coagulation is ensured, the hemostatic effect is better, and the operation efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of an argon coagulation electrotome;

FIG. 2 is a state diagram of the argon coagulation electrotome at its distal end during an electrocoagulation operation;

FIG. 3 is a schematic diagram of a connection structure of a protection tube and a conductive tube;

fig. 4 is a schematic structural view of the conductive tube.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, and the preferred embodiments of the present utility model are presented in the accompanying drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, so that the utility model is not limited to the specific embodiments disclosed below.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. In the description of the present utility model, the meaning of "several" means at least one, such as one, two, etc., unless specifically defined otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In this document, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless explicitly stated or limited otherwise. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements.

For convenience of description, the end of the sheath tube far from the operator is defined as the distal end, i.e., the front end, and the end held by the operator is the proximal end, i.e., the rear end, along the length direction thereof in this specification.

Embodiments of the utility model are further elaborated below in connection with the drawings of the specification.

As shown in fig. 1-2, the argon coagulation electrotome of the embodiment comprises a hollow outer sheath tube 1, a hauling rope 2 movably penetrating through the outer sheath tube 1, a handle seat 4 fixed with the proximal end of the outer sheath tube 1, an operating handle 7 slidingly matched with the handle seat 4 along the extending direction of the outer sheath tube 1, a snare loop 10 fixedly connected with the distal end of the hauling rope 2, and a cutter head 12 fixedly connected with the distal end of the snare loop 10, wherein the operating handle 7 can slide relative to the handle seat 4 along the extending direction of the outer sheath tube 1, and the operating handle 7 is used for driving the hauling rope 2 to move back and forth in the outer sheath tube 1 when the hauling rope 2 moves back and forth together with the snare loop 10 and the cutter head 12, thereby realizing that the snare loop 10 and the cutter head 12 extend out of the outer sheath tube 1 and the snare loop 10 and the cutter head 12 are folded in the outer sheath tube 1. The argon coagulation electrotome comprises the outer sheath tube 1, the hauling rope 2, the handle seat 4, the operating handle 7, the snare loop 10 and the cutter head 12, and further comprises a protection tube 3 fixed at the far end of the outer sheath tube 1, a guide tube 5 movably penetrating through the handle seat 4 and fixed with the near end of the hauling rope 2, a spring 9 and a conductive tube 11 arranged in the outer sheath tube 1, wherein the conductive tube 11 is arranged in the outer sheath tube 1, the conductive tube 11 is nested with the protection tube 3, and the near end of the conductive tube 11 is fixedly connected with the far end of the spring 9. The handle seat is provided with a ventilation liquid joint 6, and a gas-liquid cavity channel 61 is formed in the handle seat, the ventilation liquid joint 6 is used for being connected with a gas source (such as a gas storage tank 13) or a liquid source (such as an injector 14), and the gas-liquid cavity channel 61, the inner cavity of the outer sheath tube 1 and the inner cavity of the conductive tube 11 are sequentially communicated along the direction from the proximal end to the distal end. The operation handle 7 is provided with an energizing connector 8 connected with the catheter 5, the energizing connector 8 is used for being connected with a power source (such as a high-frequency power source 15), and the catheter 5, the traction rope 2, the snare loop 10, the spring 9 and the conductive tube 11 can conduct electricity.

When the electric knife starts the electric coagulation function, the operating handle 7 is pulled backwards, so that the snare loop 10 is completely folded in the outer sheath tube 1, and at the moment, as shown in fig. 2, the snare loop 10 is in contact fit with the spring 9; the power-on connector 8 and the high-frequency power supply 15 are connected, the catheter 5, the traction rope 2 and the snare loop 10 are sequentially transmitted to conduct electricity, at the moment, the snare loop 10 is in contact fit with the spring 9, the snare loop 10 transmits electricity to the spring 9, the spring 9 conducts electricity, the spring 9 is fixedly connected with the conductive tube 11, and therefore the conductive tube 11 conducts electricity; the ventilation liquid joint 6 is communicated with a gas storage tank 13 filled with inert gas, the inert gas is supplied to the gas storage tank 13, the inert gas is conveyed to the conducting tube 11 through the gas-liquid cavity channel 61 and the inner cavity of the outer sheath tube 1 in sequence, the inert gas is ionized at the far end of the conducting tube 11, and the ionized gas is sprayed to the tissue surface at a high speed through the protection tube 3 to perform coagulation hemostasis operation. The far end of the conducting tube 11 is of a cylindrical structure, so that the contact area between argon and the conducting tube 11 is increased, the contact area of the conducting tube 11 for ionizing the argon is increased, the uniformity of argon ionization is improved, the stability of argon coagulation is ensured, the hemostatic effect is better, and the operation efficiency is improved.

As shown in fig. 3 to 4, in particular, the protection tube 3 includes a hollow cylindrical section 31 extending into the interior of the outer sheath tube 1, and a hollow tapered section 32 integrally extending from the distal end of the hollow cylindrical section 31 and located outside the outer sheath tube 1, the inner diameter of the hollow cylindrical section 31 is larger than the inner diameter of the hollow tapered section 32, the conductive tube 11 is nested in the hollow cylindrical section 31, and the outer diameter of the conductive tube 11 is larger than the inner diameter of the hollow tapered section 32, i.e., the proximal end of the hollow tapered section 32 axially limits the conductive tube 11, preventing the conductive tube 11 from slipping and shifting. Further preferably, the proximal end of the conductive tube 11 is connected to the distal end of the spring 9 by welding, bonding, crimping, or the like, so that the connection is firm. The proximal end of the conductive tube 11 is in a horn mouth structure towards the outer side of the outer sheath tube 1, so that the connection part formed after the proximal end of the conductive tube 11 is connected with the spring 9 does not influence the smooth extension of the ring collar 10 and the cutter head 12 or the extension of the conductive tube into the cavity of the outer sheath tube 1. The conductive tube 11 may have other structures, for example, the conductive tube 11 may be a hollow cylindrical tube, so long as it can achieve a uniform argon ionization effect. Further preferably, the protection tube 3 is a ceramic tube.

According to the scheme, the contact area between argon and the conductive tube 11 is increased, the contact area of the conductive tube 11 for ionizing the argon is increased, the uniformity of argon ionization is improved, the stability of argon coagulation is ensured, the hemostatic effect is better, and the operation efficiency is improved.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present utility model without departing from the spirit and scope of the utility model. Therefore, it is intended that the present utility model cover the modifications and variations of this utility model provided they come within the scope of the appended claims and their equivalents.

Claims

1. The utility model provides an argon gas coagulation electrotome, includes sheath pipe (1), movably wear to establish haulage rope (2) in the sheath pipe, be fixed in protection tube (3) of sheath pipe (1) distal end, with handle seat (4) that sheath pipe (1) proximal end is fixed mutually, movably wear to locate in handle seat (4) and with pipe (5) that haulage rope (2) proximal end is fixed, set up in ventilation liquid joint (6) on the handle seat, set up in gas-liquid cavity way (61) in ventilation liquid joint (6), follow sheath pipe (1) extending direction with handle seat (4) sliding fit's operating handle (7), set up in on operating handle (7) with the power on joint (8) that pipe (5) are linked together, set up in spring (9) in sheath pipe (1) and with circle lantern ring (10) that haulage rope (2) distal end is fixed to link to each other, its characterized in that: still include electrically conductive pipe (11), electrically conductive pipe (11) set up in sheath pipe (1), electrically conductive pipe (11) nest protection tube (3), electrically conductive pipe (11) proximal end fixed connection the distal end of spring (9).

2. An argon coagulation electrotome as defined in claim 1 wherein:

the protection tube (3) comprises a hollow cylindrical section (31) extending into the outer sheath tube (1), and a hollow conical section (32) extending integrally from the far end of the hollow cylindrical section (31) and located outside the outer sheath tube (1), wherein the inner diameter of the hollow cylindrical section (31) is larger than that of the hollow conical section (32), the hollow cylindrical section (31) is nested by the conductive tube (11), and the outer diameter of the conductive tube (11) is larger than that of the hollow conical section (32).

3. An argon coagulation electrotome as defined in claim 2 wherein:

the proximal end of the conductive tube (11) is in a horn mouth structure facing the outer side of the outer sheath tube (1).

4. An argon coagulation electrotome as defined in claim 1 wherein:

the proximal end of the conductive tube (11) is connected with the distal end of the spring (9) by welding, bonding or crimping.

5. An argon coagulation electrotome as defined in claim 1 wherein:

the protection tube (3) is a ceramic tube.

6. An argon coagulation electrotome as defined in claim 2 wherein:

the conductive tube (11) is a hollow cylindrical tube.

7. An argon coagulation electrotome as defined in claim 1 wherein:

the ventilation liquid joint (6) is used for being connected with a gas source or a liquid source, and the electrifying joint (8) is used for being connected with a power supply.

8. An argon coagulation electrotome as defined in claim 1 wherein: the tool comprises a tool bit (12), wherein the proximal end of the tool bit (12) is fixedly connected with the distal end of the snare loop (10).