CN214318121U - High-frequency electric appliance matched with endoscope - Google Patents

Abstract

The invention discloses a high-frequency electric instrument matched with an endoscope for use, which comprises a sheath tube, an I-shaped knife, an O-shaped knife, a first handle, a second handle, an electrode holder and an injection interface, wherein the sheath tube is connected with the I-shaped knife; the rear end of the sheath tube is fixedly connected with the second handle, a spring guide tube penetrates through the sheath tube, the rear end of the spring guide tube is fixedly connected with a first handle, the first handle moves forwards and backwards and drives the spring guide tube to move forwards and backwards, an outer sheath tube is further sleeved at the front part of the sheath tube, an O knife and an I knife penetrate through the front part of the outer sheath tube, and the rear end of the I knife is fixedly connected with the spring guide tube; the I cutter is provided with an inner cavity and communicated with the spring guide pipe; the spring guide tube moves back and forth and drives the I-shaped knife to extend out of and retract back from the front end of the outer sheath tube. This electrical apparatus has integrated I sword, O sword and syringe needle function and has realized trinity, and the doctor can carry out corresponding operation as required, has so saved the time of changing the apparatus.

Description

High-frequency electric appliance matched with endoscope

Technical Field

The invention relates to the technical field of medical instruments, in particular to a high-frequency electric instrument matched with an endoscope for use.

Background

With the development of endoscopic technology and other related technologies, treatment and screening of early digestive tract cancer under endoscope has become the treatment of the first choice. The conventional digestive tract early cancer treatment process at present often needs a plurality of instruments to be matched. For example: marking or injecting the lesion position by using an injection needle to enable the lesion position to bulge, then cutting or stripping by using an electric knife, and finally suturing or stopping bleeding by using a hemostatic clamp or the electric knife or the injection needle. The operation process is complicated, the instruments are frequently replaced, the operation efficiency is low, and the requirement on the professional skills of doctors is high; the replacement of the instruments increases patient pain and the cost of the surgery is relatively high.

Chinese patent application publication No. CN108523986A discloses a high-frequency cutter with an injection needle for an endoscope, which needs to lock a double-finger handle by a locking member when operating, so as to avoid accidental sliding of an axial electrode, which brings inconvenience to the operation of medical care personnel; if the locking piece is not locked, when the double-finger handle or the sliding block is moved, a linkage phenomenon can be generated, further misoperation can occur, and accidental injury can be brought to a patient; meanwhile, the axial electrode and the needle tube are arranged in the sheath tube side by side, so that the radial size of the sheath tube is larger.

The application publication number is CN109771027A discloses a multifunctional incision knife, which relates to a multifunctional incision knife comprising a conductive liquid injection knife head, a ring sleeve, a pull rope, an outer tube component, a sliding ring and an electrode plug core rod and having the functions of peeling off and injecting water before and during an endoscopic mucosa peeling operation.

Chinese patent with publication number CN209074869U discloses a novel mucosa incision knife, which relates to a novel mucosa incision knife integrating a mucosa incision knife and an injection needle into different lumens of a double-lumen catheter, thereby realizing the functions of the injection needle and the mucosa incision knife.

Chinese patent No. CN209186932U discloses an endoscope high-frequency electrotome with a liquid injection structure, and relates to an endoscope high-frequency electrotome which uses a gap between a cutter body and a far-end limit ring to form a liquid injection channel to achieve an injection function.

Chinese patent No. CN209186930U discloses a high-frequency electric knife for endoscope with double knife heads, which relates to a high-frequency electric knife for endoscope with double knife heads, wherein the damping structure between two knife heads controls the contraction movement of the other knife head.

Chinese patent with the publication number of CN209916189U discloses a biliary tract mucosa electrocoagulation ball, which relates to a biliary tract mucosa electrocoagulation ball, and an electrocoagulator is added at the front end of the device to timely perform electrocoagulation hemostasis in an operation.

US patent No. US20190298435a1 relates to a high frequency electrotome device with injection function connected to an electrode with an electrode lumen at the distal end of the shaft by a shaft containing a central lumen and the electrode containing one or more differently angled electrode lumen exits.

The above patents still have some drawbacks including:

1) the functions are not diversified enough, and the multifunctional requirements of doctors on the high-frequency electric instruments cannot be met;

2) when the injection or the electrotomy function is performed, some unnecessary operations are required, so that the operation burden of a doctor is increased;

3) the structure is more complicated, and manufacturing cost is high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a high-frequency electric instrument matched with an endoscope for use, the electric instrument integrates the functions of an I knife, an O knife and an injection needle to realize three-in-one, and a doctor can perform corresponding operation according to the requirement, so that the time for replacing the instrument is saved, and the operation efficiency is improved.

In order to achieve the purpose, the invention provides the following technical scheme: a high-frequency electric instrument matched with an endoscope for use comprises a sheath tube, an I-shaped knife, a first handle, a second handle, an electrode holder and an injection interface;

the rear end of the sheath tube is fixedly connected with the second handle, and a spring guide tube is arranged in the sheath tube in a penetrating manner; the second handle is provided with a first handle in a sliding manner, the rear end of the spring guide pipe is fixedly connected with the first handle, the first handle slides forwards and backwards on the second handle and drives the spring guide pipe to move forwards and backwards relative to the sheath pipe, meanwhile, the spring guide pipe is electrically connected with the connector on the electrode holder, and an inner cavity channel of the spring guide pipe is communicated with the injection interface;

the front part of the sheath tube penetrates through the I-shaped knife, and the rear end of the I-shaped knife is fixedly connected with the front end of the spring guide tube; the I cutter is provided with an inner cavity and is communicated with an inner cavity channel of the spring flow guide pipe; the spring guide pipe moves back and forth and drives the I-shaped knife to extend out of and retract back from the front end of the sheath pipe.

In the technical scheme of the application, the spring guide pipe has the functions of a guide pipe and electric conduction, namely, the spring guide pipe, the connectors on the electrode holder and the I-shaped knife are connected to form an electric loop when cutting is performed; during injection, the spring guide pipe, the injection interface and the inner cavity of the I-shaped knife are communicated to form an injection channel; therefore, on one hand, the liquid injection and the electric cutting function are reversely moved through the corresponding driving piece, so that the accidental starting of the standby function can be completely eliminated, and the accidental injury to a patient or the interference to the operation process can be avoided; meanwhile, unnecessary actions in the operation of a doctor can be reduced, and the operation efficiency is improved; secondly, the phenomenon of misoperation caused by linkage of the same-direction movement of a plurality of functional parts can be avoided; on the other hand, the radial size of the sheath can be reduced, and the internal structure of the instrument is simpler.

Preferably, an outer sheath tube is further sleeved outside the sheath tube, and the spring guide tube moves forwards and backwards and drives the I-shaped knife to extend out of and retract back from the front end of the outer sheath tube.

Preferably, an O-knife is further inserted into a front portion of the outer sheath, the O-knife is fixed to a front end of the sheath, the I-knife is inserted into the O-knife, and the outer sheath is slidable rearward relative to the sheath to expose the O-knife.

Preferably, a sleeve is further fixed to the front end of the second handle.

Preferably, the rear end of the sheath tube is fixed with a sheath handle, the sheath handle is sleeved on the sheath tube, and the sheath handle moves backwards and drives the sheath tube to move backwards relative to the sheath tube.

Preferably, the spring guide pipe is coated with a plastic coating layer.

Preferably, the second handle comprises a handle main body and a thumb ring fixed at the rear end of the handle main body; the first handle is a double-finger ring structure.

Preferably, a ceramic head is further fixed to a distal end portion of the O-knife.

Preferably, the injection interface is fixed to the first handle.

Preferably, a ceramic pad is further inserted and fixed at the front end of the sheath tube, and the O-shaped knife is fixed at the front end of the sheath tube through the ceramic pad.

In conclusion, the invention has the following beneficial effects:

1. the spring guide pipe has the functions of a guide pipe and electric conduction, namely, the spring guide pipe, the connectors on the electrode holder and the I-shaped cutter are connected to form an electric loop when cutting is performed; during injection, an inner cavity channel of the spring guide pipe, the injection interface and an inner cavity of the I-shaped knife are communicated to form an injection channel; therefore, on one hand, the liquid injection and the electric cutting function are reversely moved through the corresponding driving piece, so that the accidental starting of the standby function can be completely eliminated, and the accidental injury to a patient or the interference to the operation process can be avoided; meanwhile, unnecessary actions in the operation of a doctor can be reduced, and the operation efficiency is improved; secondly, the phenomenon of misoperation caused by linkage of the same-direction movement of a plurality of functional parts can be avoided;

2. the I knife penetrates through the O knife, and the O knife penetrates through the front end of the sheath tube and is fixedly connected with the sheath tube, so that the radial size of the sheath tube can be reduced;

3. the high-frequency electric appliance has a simpler internal structure and low manufacturing cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view of the tip portion of the high-frequency electric instrument;

FIG. 3 is a schematic view of the I-knife or injection needle of the present invention in an operative condition;

fig. 4 is a schematic view of the O-knife of the present invention in an operating state.

Reference numerals: 1. a thumb ring; 2. a second handle; 3. a first handle; 4. an injection port; 5. an electrode holder; 6. a connector; 7. a sleeve; 8. a sheath tube; 9. a sheath handle; 10. an outer sheath tube; 11. a ceramic head; 12. i, cutting; 13. a radial electrode; 14. o, cutting; 15. a ceramic pad; 16. a spring draft tube; 17. and (7) coating a plastic layer.

Detailed Description

The invention is further described with reference to the accompanying drawings.

The embodiment discloses a high-frequency electric instrument used in cooperation with an endoscope, which comprises a sheath tube 8, an I-shaped knife 12, an O-shaped knife 14, a first handle 3, a second handle 2, an electrode holder 5 and an injection interface 4, wherein the electrode holder 5 is provided with a connector 6, and the electrode holder 5 is arranged at the front end of the second handle 2 and is connected with the second handle 2 through clamping, interference fit or threads as shown in figures 1 to 4; in addition, the injection interface 4 is fixed on the first handle 3; the rear end of the sheath tube 8 is fixedly connected with the second handle 2, a spring guide tube 16 penetrates through the sheath tube 8, the spring guide tube 16 is simultaneously coated with a plastic coating layer, the second handle 2 is provided with a first handle 3 in a sliding manner, the rear end of the spring guide tube 16 is fixedly connected with the first handle 3, the first handle 3 slides forwards and backwards on the second handle and drives the spring guide tube 16 to move forwards and backwards relative to the sheath tube 8, meanwhile, the spring guide tube 16 is electrically connected with the connector 6 on the electrode holder 5, and an inner cavity channel of the spring guide tube 16 is communicated with the injection interface 4; an outer sheath tube 10 is further sleeved outside the sheath tube 8, an O-shaped knife 14 and an I-shaped knife 12 are arranged at the front part of the outer sheath tube 10 in a penetrating mode, the I-shaped knife 12 penetrates through the O-shaped knife 14, a ceramic pad 15 is further fixedly inserted at the front end of the sheath tube 8 in an inserting mode, the O-shaped knife 14 is fixed at the front end of the sheath tube 8 through the ceramic pad 15, the ceramic pad 15 is cylindrical, and the outer peripheral wall of the ceramic pad 15 forms a tooth shape; the rear end of the I-shaped knife 12 is fixedly connected with the front end of the spring guide pipe 16; a radial electrode 13 is also fixed on the O-shaped knife 14; the outer sheath 10 slides backwards relative to the sheath 8 to expose the O-knife 14; meanwhile, the I-shaped knife 12 is provided with an inner cavity and is communicated with an inner cavity channel of the spring guide tube 16; the spring catheter 16 moves back and forth and drives the I-knife 12 to extend and retract from the front end of the outer sheath 10.

Injection needle mode: the first handle 3 is pushed forwards along the second handle 2, the first handle 3 drives the spring guide tube 16 and the I-shaped knife 12 to move forwards, so that the I-shaped knife 12 extends out of the front end of the outer sheath tube 10 to reach a working state, at the moment, the injection interface 4, an inner cavity channel of the spring guide tube 16 and an inner cavity of the I-shaped knife 12 are communicated to form a channel, and the injector is connected to the injection interface 4 to perform injection operation;

high-frequency I knife mode: the first handle 3 is pushed forwards along the second handle 2, the first handle 3 drives the spring guide pipe 16 and the I-shaped knife 12 to move forwards, and the I-shaped knife 12 extends out of the front end of the outer sheath tube 10 to reach a working state; at this time, the connector 6, the spring guide pipe 16 and the I-shaped knife 12 form a connecting circuit to electrically connect the high frequency to the connector 6, and the I-shaped knife 12 performs cutting operation;

high-frequency O-knife mode: in the state that the I-shaped knife 12 is completely retracted, the outer sheath 10 is pulled backwards along the sheath 8, so that the O-shaped knife 14 is exposed from the front end of the outer sheath 10, and the working state of the high-frequency O-shaped knife 14 is achieved at the moment; at the moment, the connector 6, the spring guide tube 16, the I-shaped knife 12, the radial electrode 13 and the O-shaped knife 14 form a connecting circuit; the high frequency electrical connection is made to the connector 6 and the O-knife 14 cutting operation is performed.

The instrument integrates the functions of the I knife 12, the O knife 14 and the injection needle, realizes three-in-one, and can be used for marking pathological tissues by doctors performing corresponding operations as required; physiological saline can be injected to lift the focus part; can also be used for cutting and stripping mucosa tissue; therefore, the time for replacing the instrument is saved, the operation efficiency is improved, and the pain of the patient is reduced to the maximum extent.

In the technical scheme of the application, the spring guide pipe 16 has the functions of a guide pipe and electric conduction, namely, during cutting, the spring guide pipe 16, connectors on the electrode holder and the I-shaped knife 12 are communicated to form an electric loop; during injection, an inner cavity channel of the spring guide tube 16, the injection interface 4 and an inner cavity of the I-shaped knife 12 are communicated to form an injection channel; therefore, on one hand, the liquid injection and the electric cutting function are reversely moved through the corresponding driving piece, so that the accidental starting of the standby function can be completely eliminated, and the accidental injury to a patient or the interference to the operation process can be avoided; meanwhile, unnecessary actions in the operation of a doctor can be reduced, and the operation efficiency is improved; secondly, the phenomenon of misoperation caused by linkage of the same-direction movement of a plurality of functional parts can be avoided; on the other hand, the radial dimension of the sheath 8 can be reduced, and the internal structure of the instrument is simpler and the manufacturing cost is low.

Further, a sleeve 7 is fixed at the front end of the second handle 2, and the outer sheath 10 slides backwards to abut against the sleeve 7 and expose the O-shaped knife 14; meanwhile, the rear end of the sheath tube 10 is fixed with a sheath handle 9, the sheath handle 9 is sleeved on the sheath tube 8, and the sheath handle 9 moves backwards and drives the sheath tube 10 to move backwards relative to the sheath tube 8.

The second handle 2 comprises a handle main body and a thumb ring 1 fixed at the rear end of the handle main body; the first handle 3 is a double-finger ring structure, so that the doctor can conveniently operate with one hand. Meanwhile, a ceramic head 11 is fixed to the tip end of the O-knife 14.

The directions given in the present embodiment are merely for convenience of describing positional relationships between the respective members and the relationship of fitting with each other. The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (10)

1. A high-frequency electric appliance matched with an endoscope for use comprises a sheath tube (8), an I-shaped knife (12), a first handle (3), a second handle (2), an electrode holder (5) and an injection interface (4); the method is characterized in that:

the rear end of the sheath tube (8) is fixedly connected with the second handle (2), and a spring guide tube (16) penetrates through the sheath tube (8); the second handle (2) is provided with a first handle (3) in a sliding manner, the rear end of the spring guide pipe (16) is fixedly connected with the first handle (3), the first handle (3) slides forwards and backwards on the second handle (2) and drives the spring guide pipe (16) to move forwards and backwards relative to the sheath pipe (8), meanwhile, the spring guide pipe (16) is electrically connected with the connector (6) on the electrode holder (5), and the inner cavity channel of the spring guide pipe (16) is communicated with the injection interface (4);

the front part of the sheath tube (8) penetrates through the I-shaped knife (12), and the rear end of the I-shaped knife (12) is fixedly connected with the front end of the spring guide tube (16); the I-shaped knife (12) is provided with an inner cavity and is communicated with an inner cavity channel of the spring guide pipe (16); the spring guide pipe (16) moves back and forth and drives the I-shaped knife (12) to extend out of and retract back from the front end of the sheath pipe (8).

2. An endoscopic high frequency electrical apparatus according to claim 1 and further comprising: an outer sheath tube (10) is further sleeved outside the sheath tube (8), and the spring guide tube (16) moves forwards and backwards and drives the I-shaped knife (12) to extend out of and retract back from the front end of the outer sheath tube (10).

3. An endoscopic high frequency electrical apparatus according to claim 2, wherein: the anterior O sword (14) of still wearing to be equipped with of outer sheath pipe (10), O sword (14) are fixed in the front end of sheath pipe (8), and I sword (12) run through O sword (14), outer sheath pipe (10) slide backward for sheath pipe (8) can expose O sword (14).

4. An endoscopic high frequency electrical apparatus according to claim 3 and wherein: a sleeve (7) is fixed at the front end of the second handle (2).

5. An endoscopic high frequency electrical apparatus according to claim 3 and wherein: the rear end of the outer sheath tube (10) is fixed with an outer sheath handle (9), the outer sheath handle (9) is sleeved on the sheath tube (8), and the outer sheath handle (9) moves backwards and drives the outer sheath tube (10) to move backwards relative to the sheath tube (8).

6. An endoscopic high frequency electrical apparatus according to claim 1 and further comprising: the spring guide pipe (16) is coated with a plastic coating layer (17).

7. An endoscopic high frequency electrical apparatus according to claim 1 and further comprising: the second handle (2) comprises a handle main body and a thumb ring (1) fixed at the rear end of the handle main body; the first handle (3) is of a double-finger ring structure.

8. An endoscopic high frequency electrical apparatus according to claim 3 and wherein: and a ceramic head (11) is also fixed at the front end part of the O-shaped knife (14).

9. An endoscopic high frequency electrical apparatus according to claim 1 and further comprising: the injection interface (4) is fixed on the first handle (3).

10. An endoscopic high frequency electrical apparatus according to claim 3 and wherein: the front end of the sheath tube (8) is also fixedly connected with a ceramic pad (15) in an inserting mode, and the O-shaped knife (14) is fixed at the front end of the sheath tube (8) through the ceramic pad (15).

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