CN216876574U

CN216876574U - High-frequency incision knife with optical fiber channel

Info

Publication number: CN216876574U
Application number: CN202122956400.8U
Authority: CN
Inventors: 吕泽坚; 万家昌; 高志成
Original assignee: Guangzhou Dunbo Medical Technology Co ltd
Current assignee: Guangzhou Dunbo Medical Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-07-05
Anticipated expiration: 2031-11-29

Abstract

The utility model belongs to the technical field of surgical instruments, and particularly relates to a high-frequency incision knife with an optical fiber channel, which comprises an outer sheath tube, a joint seat and a main rod which are sequentially connected, wherein a handle is sleeved on the main rod in a sliding manner, a steel wire channel, an optical fiber channel and a water injection channel are arranged in the outer sheath tube, an electrical joint, an optical fiber joint and a water injection joint are correspondingly arranged on the joint seat, a steel wire penetrates through the steel wire channel, the tail end of the steel wire penetrates through the joint seat and is fixedly connected with the handle, the front end of the steel wire is connected with an electric wire cutting head, the electrical joint is electrically connected with the steel wire, the optical fiber joint is communicated with the optical fiber channel, laser fibers penetrate through the optical fiber joint and the optical fiber channel, and the water injection joint is communicated with the water injection channel. The device provided by the utility model is provided with the optical fiber channel connected with the laser energy platform on the basis of the electric cutting wire, can treat the tiny focus which cannot be accurately positioned by the electric cutting wire, can utilize laser to timely perform hemostasis treatment on the wound, and has remarkable practical significance.

Description

High-frequency incision knife with optical fiber channel

Technical Field

The utility model relates to the technical field of surgical instruments, in particular to a high-frequency incision knife with an optical fiber channel.

Background

It is well known that mucosal resection of diseased digestive tracts by Endoscopic Submucosal Dissection (ESD) is a method of performing mucosal resection. In ESD surgery, a fluid is injected into the submucosa of a lesion to bulge tissue at a region to be removed, a high-frequency incision knife or other instrument is used to cut along the edge of the bulged lesion (circle cutting), and then the fluid is injected under the mucosa repeatedly to gradually peel off the lesion tissue along the submucosa until the lesion is removed.

The prior art comprises a catheter for guiding a cutting knife to be inserted into a digestive tract and a shredding knife for cutting and electrocoagulation of tissues, wherein the shredding knife is fixedly connected with the catheter; the diameter of the head area of the conduit is smaller than that of the conduit body, the front end of the conduit is tapered in a conical shape, and the front end face of the conduit is a smooth cambered surface and is provided with a water injection channel for injecting marking liquid. Because of the high frequency incision technique involved, there is a risk of perforation, and the physician needs to know the exact length of the cutting head that extends out of the insulating outer tube when using the high frequency incision knife to perform an operating room. Because the endoscope high-frequency incision knife reaches a pathological change position through the working cavity of the endoscope instrument, the endoscope passes through the human digestive tract bent by the human body, the bending times or the curvature radius are different, and the lengths of the knife head extending out of the insulating outer tube are different. Since the desired extension of the cutting head is in the range of a few millimeters, this variation in the extension of the cutting head due to variations in the actual conditions is also in the range of a few millimeters, which greatly increases the difficulty of the surgeon in controlling the cutting head and the risk of perforation (too long extension) or instrument failure (too short extension). Particularly, when small-area lesions are treated, the operation difficulty is high, accurate positioning and cutting are difficult to realize, and certain risks exist.

In addition, when the general high-frequency incision knife is used, if the wound in the body of a patient needs to be subjected to hemostasis treatment, the high-frequency incision knife needs to be firstly drawn out and then inserted into corresponding equipment according to the situation, for example, tiny bleeding can be treated by electrocoagulation, a large blood vessel is cauterized by using thermal biopsy forceps, and if necessary, metal clips can be used for clamping and closing treatment. The operation process relates to the process of pulling out and replacing the insertion of the medical instrument, the operation is troublesome, the consumed time is long, and the work efficiency of the operation is influenced.

In view of the above, in order to improve the treatment capability of the high-frequency incision knife for small-area lesions, reduce the difficulty and risk of surgical operation, and improve the treatment efficiency of wounds, it is necessary to develop and improve the structure of the high-frequency incision knife.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the high-frequency incision knife on the market at present is difficult to accurately position a knife head due to high positioning operation difficulty, certain risks exist during operation, perforation accidents or cutting failure accidents are easily caused by overlong or overlong stretching of the knife head when small-area focuses are treated, and other equipment needs to be replaced when wounds are treated, the high-frequency incision knife with the optical fiber channel is provided.

The utility model provides a take fibre channel's high frequency incision sword, is including the outer sheath pipe, joint chair and the mobile jib that connect gradually, the handle has been cup jointed in the sliding on the mobile jib, be provided with steel wire channel, fibre channel and water injection passageway in the outer sheath pipe, it is provided with electrical joint, fiber joint and water injection joint to correspond on the joint chair, the cross-under has the steel wire in the steel wire channel, and the end of steel wire runs through joint chair and handle fixed connection, and the front end of steel wire is connected with electric shredding head, electrical joint electric connection steel wire, the cross-under has laser fiber among fiber joint and the fibre channel, the water injection connects intercommunication water injection passageway.

Furthermore, the top of the water injection joint and the top of the optical fiber joint are both provided with a thread butt joint seat.

Furthermore, a funnel-shaped channel is arranged on the inner side of the inlet of the optical fiber connector, and the tail end of the funnel-shaped channel is communicated with the optical fiber channel.

Further, the electric connector comprises a spring and an electrode contact piece which are arranged from top to bottom, and the electrode contact piece is tightly attached to the steel wire.

Furthermore, the front end inboard of sheath pipe corresponds the electric cutting head and is provided with the electric cutting protective sheath, the end of electric cutting head runs through the electric cutting protective sheath and is connected with the steel wire.

Furthermore, the front end of the electric cutting head is provided with a limiting ring, and the outer diameter of the limiting ring is larger than that of the electric cutting protective sleeve.

Further, the handle comprises an upper handle body and a lower handle body, the upper handle body and the lower handle body are correspondingly buckled, and the upper handle body and the lower handle body are both provided with adjusting finger rings.

Furthermore, the inner sides of the front ends of the upper handle body and the lower handle body are respectively provided with a positioning groove and a positioning pin, a connecting pipe penetrates through the positioning pin, and the connecting pipe is fixedly connected with the tail end of the steel wire.

Furthermore, a limiting sliding groove is formed in the main rod, and the upper handle body and the lower handle body are correspondingly installed in the limiting sliding groove.

Further, the optical fiber channel is vertically arranged below the steel wire channel.

The utility model has the advantages that:

1. the laser function is added on the basis of the conventional high-frequency incision knife, a laser energy platform can be connected, and the laser is used for treating small-area focuses which cannot be accurately positioned and treated by electrical shredding.

2. Can directly utilize laser to stanch and handle the wound after the electric knife excision focus, need not to change other equipment, effectively improve operation work efficiency, convenient to use.

3. Structural design is simple direct, can increase fibre channel realization scheme after the adjustment on current high frequency incision sword structure basis.

4. The equipment cost is lower, and the commonality is strong, is convenient for change current old money high frequency cutting knife and carries out the popularization and application.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a left side view of a high frequency slitting knife with a fiber channel;

FIG. 2 is a front view of a high frequency slitting knife with a fiber channel;

FIG. 3 is a cross-sectional view of a high frequency cutting blade with a fiber channel;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

fig. 5 is an exploded view of a high frequency cutting blade with a fiber channel.

The attached drawings are as follows:

1. an outer sheath tube; 2. connecting a base; 3. a main rod; 31. a limiting chute; 4. a handle; 41. an upper handle body; 42. a lower handle body; 5. a steel wire channel; 51. an electrical connector; 52. a spring; 53. an electrode contact piece; 6. a fiber channel; 61. an optical fiber splice; 7. a water injection channel; 71. a water injection joint; 8. a steel wire; 81. a connecting pipe; 9. electrically cutting the filament head; 10. a laser fiber; 11. a threaded docking station; 12. a funnel-shaped channel; 13. an electric wire cutting protective sleeve; 14. a limiting ring; 15. adjusting the finger ring; 16. positioning a groove; 17. and a positioning pin.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "middle", "inner", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

As shown in fig. 1 to 5, this embodiment provides a high-frequency incision knife with fiber channel, including the outer sheath pipe 1, joint seat 2 and the mobile jib 3 that connect gradually, slip cup joint handle 4 on the mobile jib 3, be provided with steel wire channel 5, fiber channel 6 and water injection channel 7 in the outer sheath pipe 1, it is provided with electrical joint 51, fiber joint 61 and water injection joint 71 to correspond on the joint seat 2, the cross-under has steel wire 8 in the steel wire channel 5, and the end of steel wire 8 runs through joint seat 2 and handle 4 fixed connection, and the front end of steel wire 8 is connected with electric wire cutting head 9, electrical joint 51 electric connection steel wire 8, fiber joint 61 intercommunication fiber channel 6, and the cross-under has laser fiber 10 in fiber joint 61 and the fiber channel 6, water injection joint 71 intercommunication water injection channel 7.

Because the optical fiber channel 6 is additionally arranged on the original outer sheath tube 1, the high-frequency cutting knife can be externally connected with a laser energy platform on the basis of the original high-frequency cutting knife, and the electric cutting wire of the high-frequency cutting knife can not be accurately positioned to reach a small-area focus by laser treatment. In addition, due to the fact that the laser is configured, the laser can be directly used for conducting hemostasis treatment on the wound after the lesion is cut off by the electric knife, other devices do not need to be replaced, and operation working efficiency is effectively improved.

The top of the water injection joint 71 and the top of the optical fiber joint 61 are both provided with a threaded butt joint seat 11. The threaded docking seat 11 facilitates the external connection of the high-frequency incision knife with an injection source and a laser energy platform.

The inner side of the inlet of the optical fiber connector 61 is provided with a funnel-shaped channel 12, and the tail end of the funnel-shaped channel 12 is communicated with the optical fiber channel 6. The funnel-shaped passage 12 has an enlarged opening to facilitate insertion of the laser fiber 10 into the fiber passage 6.

The electrical connector 51 includes a spring 52 and an electrode contact piece 53 mounted from top to bottom, the electrode contact piece 53 being in close contact with the steel wire 8. The design of the electrode contact piece 53 with the spring 52 ensures that the electrical connector 51 can be electrically connected with the steel wire 8 moving back and forth.

The front end inboard of sheath pipe 1 corresponds electric cutting head 9 and is provided with electric cutting protective sheath 13, electric cutting head 9's end runs through electric cutting protective sheath 13 and is connected with steel wire 8. The electric cutting wire protective sleeve 13 can provide protection for the electric cutting wire head 9 and isolate the internal environment and the external environment of the equipment.

The front end of the electric cutting head 9 is provided with a limiting ring 14, and the outer diameter of the limiting ring 14 is larger than that of the electric cutting protective sleeve 13. The limiting ring 14 can prevent the electric cutting head 9 from accidentally entering the outer sheath tube 1 to cause damage.

The handle 4 comprises an upper handle body 41 and a lower handle body 42, the upper handle body 41 and the lower handle body 42 are correspondingly buckled, and the upper handle body 41 and the lower handle body 42 are both provided with adjusting finger rings 15. The handle 4 is of a structure which is buckled up and down, so that the assembly is convenient.

The inner sides of the front ends of the upper handle body 41 and the lower handle body 42 are respectively provided with a positioning groove 16 and a positioning pin 17, the positioning pin 17 is connected with a connecting pipe 81 in a penetrating manner, and the connecting pipe 81 is fixedly connected with the tail end of the steel wire 8. The connecting pipe 81 is made of an insulating material, so that the electrified steel wire 8 and the handle 4 are isolated, and the use safety can be ensured.

The main rod 3 is provided with a limiting sliding groove 31, and the upper handle body 41 and the lower handle body 42 are correspondingly arranged in the limiting sliding groove 31. A certain frictional resistance is provided between the limiting sliding chute 31 and the handle 4, the adjusting finger ring 15 is matched to facilitate the doctor to operate the telescopic length of the positioning steel wire 8, and then the position of the electric cutting head 9 is finely adjusted to enable the electric cutting head to be accurately positioned to a focus area.

The optical fiber channel 6 is vertically arranged below the steel wire channel 5. The positioning position of the laser optical fiber on the same vertical line with the electric cutting wire is very close to the electric cutting wire, and a doctor can conveniently position the front end of the laser optical fiber to a focus position by taking the electric cutting wire as a reference object.

The foregoing is a more detailed description of the utility model than is specifically described in connection with the preferred embodiments, and it is not intended to limit the utility model to the particular forms disclosed, since all equivalent variations and modifications as fall within the scope of the appended claims are intended to be embraced therein.

Claims

1. The utility model provides a take fibre channel's high frequency incision sword, its characterized in that, is including the outer sheath pipe, joint chair and the mobile jib that connect gradually, the handle has been cup jointed in the sliding on the mobile jib, be provided with steel wire channel, fibre channel and water injection passageway in the outer sheath pipe, it is provided with electrical joint, optical fiber splice and water injection joint to correspond on the joint chair, the cross-under has the steel wire in the steel wire channel, and the end of steel wire runs through joint chair and handle fixed connection, and the front end of steel wire is connected with electric wire cutter head, electrical joint electric connection steel wire, optical fiber splice intercommunication fibre channel, the cross-under has laser fiber in optical fiber splice and the fibre channel, the water injection connects intercommunication water injection passageway.

2. A high-frequency cutting blade with an optical fiber channel according to claim 1, wherein the top of the water injection joint and the top of the optical fiber joint are provided with screw thread butt-joint seats.

3. The high-frequency cutting blade with an optical fiber channel according to claim 2, wherein a funnel-shaped channel is provided inside an inlet of the optical fiber connector, and a distal end of the funnel-shaped channel communicates with the optical fiber channel.

4. A high-frequency cutting blade with an optical fiber channel according to claim 1, wherein said electric connector comprises a spring and an electrode contact piece mounted from top to bottom, said electrode contact piece being adhered to the steel wire.

5. The high-frequency incision knife with optical fiber channel of claim 1, wherein an electrical cutting protective sleeve is disposed inside the front end of the outer sheath tube corresponding to the electrical cutting head, and the end of the electrical cutting head is connected with the steel wire through the electrical cutting protective sleeve.

6. A high-frequency incision knife with fiber channel as claimed in claim 5, wherein the front end of said electric cutting head is provided with a spacing ring, the outer diameter of said spacing ring is larger than the outer diameter of the electric cutting protective sleeve.

7. The high-frequency incision knife with an optical fiber channel according to claim 1, wherein the handle comprises an upper handle body and a lower handle body, the upper handle body and the lower handle body are buckled correspondingly, and the upper handle body and the lower handle body are both provided with adjusting finger rings.

8. The high-frequency incision knife with an optical fiber channel of claim 7, wherein the inner sides of the front ends of the upper handle body and the lower handle body are respectively provided with a positioning groove and a positioning pin, the positioning pin is connected with a connecting pipe in a penetrating way, and the connecting pipe is fixedly connected with the tail end of the steel wire.

9. The high-frequency incision knife with an optical fiber channel as claimed in claim 7, wherein the main rod is provided with a limiting sliding groove, and the upper handle body and the lower handle body are correspondingly arranged in the limiting sliding groove.

10. A high-frequency cutting blade with an optical fiber channel according to claim 1, wherein said optical fiber channel is disposed vertically below the wire channel.