CN217488829U

CN217488829U - Bipolar and double-injection cutting knife

Info

Publication number: CN217488829U
Application number: CN202220065115.9U
Authority: CN
Inventors: 许荣春
Original assignee: Yangzhou Fartley Medical Instrument Technology Co ltd
Current assignee: Yangzhou Fartley Medical Instrument Technology Co ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-09-27
Anticipated expiration: 2032-01-12

Abstract

The utility model discloses a cutting knife for bipolar double-injection, which comprises a handle, wherein the handle comprises a hollow core bar, a slip ring, a connecting end cap and a protective sleeve, an outer tube is fixedly inserted in the protective sleeve, the outer tube consists of an outer tube coating and an outer tube spring tube, an inner tube is inserted in the outer tube spring tube, a certain gap is set between the outer tube and the inner tube, the inner tube consists of an inner tube coating and an inner tube spring tube, one end of the inner tube is fixedly connected with the cutting knife, insulating ceramic is inserted outside the cutting knife, the insulating ceramic is inserted in one end of the outer tube, and two water outlet holes are arranged in the insulating ceramic; the utility model can connect the first electrode and the second electrode with the high-frequency electrotome respectively, and form a current loop through the lesion tissue to achieve the cutting purpose; the injection is injected into the pathological tissue through the injection port I, the boosting tube, the inner tube and the inner hole of the cutting knife; and the second liquid injection port is used for flushing a bleeding point of the tissue by passing liquid through the outer tube and the insulating ceramic water outlet, so that the visual field is clearer.

Description

Cutting knife for bipolar double-injection

Technical Field

The utility model particularly relates to a bipolar cutting knife technical field especially relates to a bipolar two cutting knife of annotating liquid.

Background

In recent years, endoscopic tissue biopsy, endoscopic mucosal resection and endoscopic mucosal dissection are widely used, and are gradually becoming the first treatment means for treating gastrointestinal hemorrhage, polypectomy and early cancer. Particularly, ESD plays a key role in the discovery, diagnosis and resection of early cancer, and in clinical surgery, instruments are often used for separation, electrocoagulation, cutting of blood vessels or tissues and the like.

In the prior art, bipolar coagulation forceps, scissors and hooks are usually adopted for separation, and a plurality of instruments need to be replaced during operation, so that the operation becomes more complicated, the operation time is prolonged, and the pain is brought to a patient. Therefore, it is necessary to develop a cutting knife which is easy to operate, has multiple functions and is convenient for doctors to use, and in order to solve the technical problems, people have long-term exploration and finally provide a new solution.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a bipolar double-injection cutting knife.

In order to realize the purpose, the utility model adopts the following technical scheme:

a bipolar double-injection cutting knife comprises a handle, the handle comprises a hollow core bar, a slip ring, a connecting end cap and a sheath tube, an outer tube is fixedly inserted in the sheath tube, the outer pipe consists of an outer pipe coating and an outer pipe spring pipe, the inner pipe is inserted in the outer pipe spring pipe, a certain gap is arranged between the outer pipe and the inner pipe, the inner tube consists of an inner tube coating and an inner tube spring tube, one end of the inner tube is fixedly connected with a cutting knife, insulating ceramics are inserted outside the cutting knife, and inside insulating ceramic alternated in outer tube one end, be equipped with two apopores in the insulating ceramic, the other end of inner tube passes and connects end cap fixedly connected with boosting tube, is equipped with on the sliding ring and annotates liquid mouth one, and the hole on annotating liquid mouth one is linked together with the hole on the boosting tube, is equipped with on the connection end cap and annotates liquid mouth two, and it is linked together to annotate liquid mouth two and the hole on the outer tube.

Furthermore, the sliding ring is slidably mounted on the core rod, one end of the core rod is in threaded connection with the connecting end cap, one end of the connecting end cap is fixedly connected with the protective sleeve, the sliding ring is provided with a first electrode, and one end of the first electrode, which is located in the core rod, is connected with the boosting pipe.

Furthermore, an inner hole in the cutting knife is fixedly connected with one end of the inner tube spring tube in an inserting mode.

Furthermore, a second electrode is arranged on the connecting end cap, one end of the outer tube spring tube is connected with the second electrode, and the other end of the outer tube spring tube is connected with the metal end cap.

Furthermore, the second liquid injection port is communicated with a water outlet hole in the insulating ceramic.

The utility model has the advantages that:

1. the electrode I, the electrode II and the high-frequency electrotome are connected, and when the cutting device works, a current loop is formed by the electrode I, the boosting tube, the cutting knife, the pathological change tissue, the metal end cap, the outer tube spring tube, the electrode II and the high-frequency electrotome, so that the purpose of cutting the pathological change tissue is achieved, and the operation is very convenient.

2. The liquid injection port I and the liquid injection port II are additionally arranged on the basis of the two electrodes, when pathological change tissues are flat and are not beneficial to cutting, injection liquid can be injected into the pathological change tissues through the liquid injection port I, the boosting pipe, the inner tube spring pipe and the inner hole of the cutting knife, so that the tissues are raised, and the pathological change tissues can be cut off more favorably.

3. Through annotating the setting of liquid mouth two, outer tube, insulating ceramic and inner tube, when in the cutting process, if the discovery has the point of bleeding, lead to being cut the position of tissue department fuzzy, this is can be with the apopore blowout of injection liquid through annotating liquid mouth two, outer tube and interior intervascular gap department, insulating ceramic, washes pathological change tissue point of bleeding for pathological change tissue position is clear, the doctor's operation of being convenient for.

4. The utility model discloses a core bar and outer tube all adopt insulating material's setting to and improve the security that the device used under insulating ceramic's cooperation.

Drawings

Fig. 1 is a schematic view of a half-section structure of a bipolar double-injection cutting knife provided by the present invention;

fig. 2 is a schematic view of a sectional structure of an outer tube and an inner tube of the bipolar double-injection cutting knife of the present invention;

fig. 3 is the utility model provides an insulating ceramic of cutting knife of bipolar two notes liquid looks sideways at the schematic structure.

In the figure: 1. a core bar; 2. a slip ring; 3. a first electrode; 4. a first liquid injection port; 5. a boosting pipe; 6. a second electrode; 7. connecting an end cap; 71. a second liquid injection port; 8. sheathing a pipe; 9. an outer tube spring tube; 10. coating the outer pipe; 11. an inner tube spring tube; 12. coating the inner pipe; 13. a metal end cap; 14. an insulating ceramic; 15. a cutting knife; 14a and a water outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. It should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and their meaning in the context of this patent may be understood by those skilled in the art as appropriate.

Referring to fig. 1-3, a cutting knife for bipolar double-injection, which comprises a handle, the handle comprises a hollow core bar 1, a sliding ring 2, a connecting end cap 7 and a protecting sleeve 8, an outer tube is fixedly inserted in the protecting sleeve 8, the outer tube is composed of an outer tube coating 10 and an outer tube spring tube 9, an inner tube is inserted in the outer tube spring tube 9, a certain gap is set between the outer tube and the inner tube, the inner tube is composed of an inner tube coating 12 and an inner tube spring tube 11, one end of the inner tube is fixedly connected with a cutting knife 15, an insulating ceramic 14 is inserted outside the cutting knife 15, the insulating ceramic 14 is inserted in one end of the outer tube, two water outlet holes 14a are arranged in the insulating ceramic 14, the other end of the inner tube penetrates through the connecting end cap 7 and is fixedly connected with a boosting tube 5, a first injection hole 4 is arranged on the sliding ring 2, an inner hole on the first injection hole 4 is communicated with an inner hole on the boosting tube 5, and the injection liquid can be injected through the first 4, The booster tube 5, the inner tube spring tube 11 and the inner hole of the cutting knife are injected into the pathological change tissue, so that the pathological change tissue is raised, and the pathological change tissue can be cut off more favorably.

Connect to be equipped with on the end cap 7 and annotate liquid mouth two 71, annotate the hole on liquid mouth two 71 and the outer tube and be linked together, sliding ring 2 slidable mounting is on core bar 1, the one end of core bar 1 with be connected end cap 7 threaded connection, the one end and the protecting pipe 8 fixed connection of connecting end cap 7 are equipped with electrode one 3 on the sliding ring 2, electrode one 3 is located the one end of core bar 1 and is connected with boosting pipe 5. The hole on the cutting knife 15 is pegged graft fixedly with the one end of inner tube spring pipe 11, it is equipped with two 6 electrodes on the connection end cap 7, the one end and two 6 electrodes of outer tube spring pipe 9 are connected, the other end of outer tube spring pipe 9 is connected with metal end cap 13, it is linked together to annotate apopore 14a on two 71 and the insulating ceramic 14 of liquid mouth, when in the cutting process, if the discovery has the bloody spot, it is fuzzy to lead to being cut tissue department position, this can be with the injection liquid through annotating liquid mouth two 71, gap department between outer tube and the inner tube, the apopore 14a blowout of insulating ceramic 14, wash pathological change tissue surface, make pathological change tissue position clear, be convenient for doctor's operation.

The working principle of the embodiment is as follows: electrode 3 and two 6 external high frequency electrotome output ends respectively of motor, hold core bar 1, promote sliding ring 2, sliding ring 2 drives boosting pipe 5, the inner tube, cutting knife 15 stretches out along the outer tube in, cutting knife 15 contacts with human tissue respectively with metal end 13, the switch on, the electric current flows to electrode 3 from high frequency electrotome, boosting pipe 5, inner tube spring tube 11, cutting knife 15, pathological change tissue, metal end cap 13, outer tube spring tube 9, electrode two 6, final flow direction high frequency electrotome forms the return circuit, the completion is to the cutting of pathological change tissue.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a cutting knife of two liquid injections of bipolar, includes the handle, and the handle includes hollow core bar (1), sliding ring (2), connects end cap (7) and protecting pipe (8), and it is fixed with the outer tube to alternate in protecting pipe (8), its characterized in that, the outer tube comprises outer tube coating (10) and outer tube spring pipe (9), it is equipped with the inner tube to alternate in outer tube spring pipe (9), and the outer tube is set for certain clearance with the inner tube, the inner tube comprises inner tube coating (12) and inner tube spring pipe (11), and the one end fixedly connected with cutting knife (15) of inner tube, and insulating pottery (14) are alternate in outer tube one end in cutting knife (15), be equipped with two apopores (14a) in insulating pottery (14), the other end of inner tube passes and connects end cap (7) fixedly connected with boosting pipe (5), a first liquid injection port (4) is formed in the sliding ring (2), an inner hole in the first liquid injection port (4) is communicated with an inner hole in the boosting pipe (5), a second liquid injection port (71) is formed in the connecting end cap (7), and the second liquid injection port (71) is communicated with an inner hole in the outer pipe.

2. The bipolar bi-injection cutting knife of claim 1, wherein: the sliding ring (2) is slidably mounted on the core rod (1), one end of the core rod (1) is in threaded connection with the connecting end cap (7), one end of the connecting end cap (7) is fixedly connected with the protective sleeve (8), the sliding ring (2) is provided with a first electrode (3), and one end, located in the core rod (1), of the first electrode (3) is connected with the boosting pipe (5).

3. The bipolar bi-injection cutting knife of claim 1, wherein: and an inner hole in the cutting knife (15) is fixedly inserted into one end of the inner tube spring tube (11).

4. The bipolar bi-injection cutting knife of claim 2, wherein: and a second electrode (6) is arranged on the connecting end cap (7), one end of the outer tube spring tube (9) is connected with the second electrode (6), and the other end of the outer tube spring tube (9) is connected with a metal end cap (13).

5. The bipolar bi-injection cutting knife of claim 1, wherein: and the second liquid injection port (71) is communicated with a water outlet hole (14a) on the insulating ceramic (14).