CN212326423U

CN212326423U - Double-ball cage type esophagus electrode

Info

Publication number: CN212326423U
Application number: CN202020217820.7U
Authority: CN
Inventors: 丁亚辉; 王慧
Original assignee: 丁亚辉
Current assignee: Zhejiang Provincial Peoples Hospital
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2021-01-12
Anticipated expiration: 2030-02-27

Abstract

The utility model relates to a heart electrophysiology apparatus technical field, specifically speaking relates to a two ball cage type esophagus electrodes, including the pipe, the inside of pipe is provided with the haulage cable, the one end of pipe is provided with the tail end, the tail end department of being close to of pipe still is connected with a bifurcation end, the outer end of bifurcation end is provided with the electrode contact, the other end of pipe is provided with the head end, the pipe is close to head end department and inlays and is equipped with two ball cages, the one end that the haulage cable is close to the head end closely bonds and has the fixed block, the outer wall of fixed block closely bonds with the inner wall of head end, one side that the inner wall of pipe is close to the ball cage closely bonds and has spacing piece, the outside inboard department cover that is located the ball cage of haulage cable is equipped. The utility model discloses a metal contact on the electrode catheter can be guaranteed in the design can be reliable and the esophagus wall keeps reliable and stable contact, and the electrode catheter can be fixed and be difficult to take place to remove at the assigned position.

Description

Double-ball cage type esophagus electrode

Technical Field

The utility model relates to the technical field of heart electrophysiology apparatus, in particular to a double-ball cage type esophagus electrode.

Background

The transesophageal cardiac electrophysiology examination is the first choice examination for evaluating the functions of the sinoatrial node and the atrioventricular node, discovering and evaluating the double-path phenomenon of the atrioventricular node and the atrioventricular bypass, and inducing and stopping paroxysmal supraventricular tachycardia, has the advantages of low cost, small wound, convenience, rapidness and the like, and is in the core position in the current noninvasive electrophysiology technology.

The transesophageal cardiac electrophysiology examination needs to deliver a catheter made of high polymer materials with a plurality of metal electrode rings at the head section into the esophagus in the corresponding area of the left atrium through the nasal cavity or the oral cavity, and an electrode contact at the external section of the body is connected with an electrocardio-physiological recorder and a program-controlled stimulator by using an alligator clip and a lead wire for mapping and program-controlled stimulation. However, for convenient delivery, the diameter of the esophageal electrode catheter is only about 2mm, and the inner diameter of the esophagus is 15-30mm, so that the contact between a metal contact on the catheter and the inner wall of the esophagus is unreliable, which means that the pacing voltage of different patients or the same patient under different conditions is greatly different, the position of the electrode needs to be repeatedly tried to be adjusted, and meanwhile, the signal acquisition quality is unstable, the interference is large, and in addition, the higher pacing voltage is easy to cause pain and discomfort of the patient during pacing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two ball cage type esophagus electrodes to solve the problem that proposes among the above-mentioned background art.

In order to achieve the purpose, the utility model provides a double-ball cage type esophagus electrode, which comprises a catheter, a traction rope is arranged in the conduit, a tail end is arranged at one end of the conduit, a forked end is connected to the position, close to the tail end, of the conduit, the outer end of the forked end is provided with an electrode contact, the other end of the catheter is provided with a head end, two ball cages are embedded in the position of the catheter close to the head end, a fixed block is tightly bonded at one end of the traction cable close to the head end, the outer wall of the fixed block is tightly bonded with the inner wall of the head end, a limiting block is closely adhered to one side of the inner wall of the guide pipe, which is close to the ball cage, a limiting sleeve is sleeved outside the traction cable, which is positioned at the inner side of the ball cage, when the traction cable is pulled outwards, the ball cage can be unfolded to be spherical, and when the traction cable continues to move, the limiting piece can block one section of the limiting sleeve so as to limit the traction cable; the tail end includes fixed cover, the inside of fixed cover is hollow structure, the inside department that the haulage cable is located the tail end has a plurality of stoppers closely welded, the outer end of tail end closely bonds and has the chucking board.

Preferably, the ball cage is composed of three edges, the two ends of the ball cage can be bent and deformed to form a spherical structure when being extruded, the length of each edge is 3.1cm, a metal contact is arranged in the middle of the outer wall of the ball cage, and the metal contact is connected to the electrode contact of the forked end through a lead.

Preferably, the limiting block is of a cylindrical structure, and the cross section of the limiting block is rectangular.

Preferably, the clamping plate is of a hollow structure, the size of the clamping hole can be changed by pressing the button, the hollow structure of the clamping plate is enlarged after the button is pressed down, the traction cable can be pulled, the hollow structure in the clamping plate is reduced after the button is loosened, the clamping teeth at the tail section of the traction cable can be fixed, the traction cable is prevented from moving, and the spring is tightly adhered to the bottom end of the button.

Preferably, a handle is closely adhered to the tail end of the traction cable.

Preferably, an interface conversion line is arranged at the outer end of the forked end, the interface conversion line comprises a lead, one end, close to the forked end, of the lead is connected with an inserting end, the inserting end is in inserting fit with the forked end, one end, far away from the forked end, of the lead is connected with an output end, a plurality of contact pieces are arranged on the surface of the output end, a plurality of contacts are arranged on the inner wall of the inserting end, the contacts are connected with the electrode contacts, and the electrode contacts are connected with the contact pieces through the lead.

Compared with the prior art, the beneficial effects of the utility model are that: the double-ball cage type esophageal electrode can ensure that a metal contact on the electrode catheter can reliably keep stable and reliable contact with the esophageal wall, and the electrode catheter can be fixed at a designated position and is not easy to move.

Drawings

FIG. 1 is a schematic view of the overall structure of the ball cage of the present invention when it is folded;

FIG. 2 is a schematic view of the overall structure of the ball cage of the present invention when it is deployed;

FIG. 3 is one of the partial structural schematic diagrams of the present invention;

fig. 4 is a second partial schematic structural view of the present invention;

fig. 5 is a schematic structural diagram of the interface conversion line of the present invention;

fig. 6 is a schematic structural view of the middle clamping plate of the present invention.

In the figure: 1. a conduit; 11. a ball cage; 12. a head end; 13. a limiting sheet; 2. a traction cable; 21. a limiting sleeve; 22. a fixed block; 23. a limiting block; 24. a handle; 3. a tail end; 31. fixing a sleeve; 32. a chucking plate; 321. a button; 322. a clamping hole; 323. a spring; 4. a bifurcated end; 41. an electrode contact; 5. an interface conversion line; 51. a wire; 511. a plug end; 5111. a contact; 512. an output end; 5121. a contact piece.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model provides a double-ball cage type esophagus electrode, as shown in figure 1-figure 6, comprising a conduit 1, a traction cable 2 is arranged in the conduit 1, a tail end 3 is arranged at one end of the conduit 1, a branch end 4 is connected at the position of the conduit 1 close to the tail end 3, an electrode contact 41 is arranged at the outer end of the branch end 4, a head end 12 is arranged at the other end of the conduit 1, two ball cages 11 are embedded at the position of the conduit 1 close to the head end 12, a fixed block 22 is closely bonded at one end of the traction cable 2 close to the head end 12, the outer wall of the fixed block 22 is closely bonded with the inner wall of the head end 12, a limit sheet 13 is closely bonded at one side of the inner wall of the conduit 1 close to the ball cage 11, a limit sleeve 21 is sleeved at the inner side of the ball cage 11 at the outer part of the traction cable 2, when the traction cable 2 is pulled outwards, the ball cage 11 can be unfolded to be spherical, when the traction cable 2 moves, the excessive expansion of the ball cages 11 is avoided, and the expansion forms of the two ball cages 11 can be kept basically consistent; the tail end 3 comprises a fixing sleeve 31, the inside of the fixing sleeve 31 is of a hollow structure, a plurality of limiting blocks 23 are welded on the inner portion of the tail end 3 of the traction cable 2, a clamping plate 32 is tightly bonded on the outer end of the tail end 3, and the traction cable 2 can be fixed at a specific position.

Specifically, the ball cage 11 is composed of three edges, the two ends of the ball cage 11 can be bent and deformed to form a spherical structure when being extruded, the length of each edge is 3.1cm, a metal contact is arranged in the middle of the outer wall of the ball cage 11 and is connected to the electrode contact 41 of the forked end 4 through a lead, when the traction cable 2 is tensioned, the ball cage 11 with the length of about 2cm and the diameter of about 2.0-2.5cm can be formed, the esophageal electrodes on the edges can be tightly attached to the esophageal wall, contact is improved, when the traction cable 2 is pushed and reset, the edges of the ball cage 11 can be retracted and are integrated with the guide pipe 1, conveying or recycling is facilitated, and the distance between the top points of the ball cage 11 is about 3 cm.

It is noted that two electrodes of the same cage 11 or electrodes between two cages may be combined to form different loops.

In addition, the limiting block 23 is of a conical structure, so that the limiting block can be conveniently clamped and fixed with the clamping plate 32.

It is worth to say that the diameter of pipe 1 is 2.5mm, and length is 1.2 meters, and 12 mm length of head end are 5mm and for softer material, such as rubber material, can avoid the mucous membrane damage in the propelling movement process, and 3cm that follow is the guide segment that has certain plasticity, and the conveying process is smooth for the moulding assurance of accessible, and electrically conductive 1 is located the ball cage rear end and is about 1 meter long extension.

Further, chucking plate 32 is inside hollow circular structure, the vertical button 321 that is provided with in top of chucking plate 32, button 321, the bottom run through the outer wall of chucking plate 32 and offer the card hole 322 with stopper 23 size looks adaptation, card hole 322 and stopper 23 joint cooperation, the bottom of button 321 closely bonds and has spring 323, when pressing button 321, spring 323 compresses tightly for stopper 23 breaks away from card hole 3, haulage cable 2 can the propelling movement reset.

Further, a handle 24 is closely adhered to the tail end of the traction cable 2 for pulling and pushing.

Further, an interface conversion line 5 is arranged at the outer end of the forked end 4, the interface conversion line 5 comprises a lead 51, one end of the lead 51, which is close to the forked end 4, is connected with an insertion end 511, the insertion end 511 is in insertion fit with the forked end 4, one end of the lead 51, which is far away from the forked end 4, is connected with an output end 512, a plurality of contact pieces 5121 are arranged on the surface of the output end 512, a plurality of contact points 5111 are arranged on the inner wall of the insertion end 511, the contact points 5111 are connected with the electrode contact points 41, the electrode contact points 41 are connected with the contact pieces 5121 through leads, and the output end 512 can.

It should be noted that the output terminals 512 are provided with electrode contacts 5121 corresponding to the electrode contacts 41 on the edge of the ball cage 11, which may be inserted into a dedicated connector and then converted into an interface system for use with an electrophysiology apparatus, such as electrode contacts that may be alligator clips.

Furthermore, the diameter of the section of the fixing sleeve 31 is larger than that of the section of the catheter 1, so that the inner limiting block 23 can move conveniently.

After the cage is fully deployed, the diameter of the cage is about 2cm and the length of the cage is 2.5 cm. The distance between the two ball cages is 1 cm. The traction rope is pushed to the bottom, after the ball cage is folded, the edges of the ball cage are completely combined together and integrated with the guide pipe, and the pushing and the recovery are convenient.

The double-ball cage type esophagus electrode of the embodiment is used, firstly, the traction cable 2 is pulled outwards, the ball cage 11 can be unfolded to be spherical, the electrode contact 5111 on the edge of the ball cage 11 can be tightly attached to the esophagus wall, the contact is improved, when the traction cable 2 moves continuously, the limiting piece 13 can block one section of the limiting sleeve 21 and limit the traction cable 2, the excessive expansion of the ball cage 11 is avoided, the expansion forms of the two ball cages 11 can be kept basically consistent, when the traction cable 2 is pushed and reset, the edge of the ball cage 11 can be retracted, the traction cable is integrated with the conduit 1, the conveying or the recovery is convenient, the traction cable 2 can be fixed in the clamping hole 3 through the limiting block 23, when the button 321 is pressed, the spring 323 compresses tightly, the limiting block 23 is separated from the clamping hole 3, and the traction cable 2 can be pushed and reset.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A double-ball cage type esophageal electrode comprises a catheter (1), and is characterized in that: the utility model discloses a catheter, including pipe (1), the inside of pipe (1) is provided with haulage cable (2), the one end of pipe (1) is provided with tail end (3), the department that is close to tail end (3) of pipe (1) still is connected with a branch end (4), the outer end of branch end (4) is provided with electrode contact (41), the other end of pipe (1) is provided with head end (12), pipe (1) is close to head end (12) department and inlays and is equipped with two ball cages (11), the one end that haulage cable (2) are close to head end (12) closely bonds and has fixed block (22), the outer wall of fixed block (22) closely bonds with the inner wall of head end (12), the inner wall of pipe (1) is close to one side of ball cage (11) and closely bonds and has spacing piece (13), the outside of haulage cable (2) is located inboard department cover of ball cage (11) and is equipped with spacing sleeve pipe (21), when haulage cable, the ball cage (11) can be unfolded to be spherical, and when the traction cable (2) continues to move, the limiting sheet (13) can block one section of the limiting sleeve (21) to limit the traction cable (2); the tail end (3) are including fixed cover (31), the inside of fixed cover (31) is hollow structure, the inside department that pulls cable (2) to be located tail end (3) closely welds and has a plurality of stopper (23), the outer end of tail end (3) closely bonds and has chucking plate (32).

2. The double-ball cage type esophageal electrode of claim 1, wherein: the ball cage (11) is composed of three edges, the two ends of the ball cage can be bent and deformed to form a spherical structure when being extruded, the length of each edge is 3.1cm, a metal contact is arranged in the middle of the outer wall of the ball cage (11), and the ball cage is connected to the electrode contact (41) of the forked end (4) through a lead.

3. The double-ball cage type esophageal electrode of claim 1, wherein: the limiting block (23) is of a cylindrical structure.

4. The double-ball cage type esophageal electrode of claim 1, wherein: chucking board (32) are inside hollow circular structure, the vertical button (321) that is provided with in top of chucking board (32), the bottom of button (321) run through the outer wall of chucking board (32) and set up card hole (322) with stopper (23) size looks adaptation, card hole (322) and stopper (23) joint cooperation, the bottom of button (321) closely bonds and has spring (323).

5. The double-ball cage type esophageal electrode of claim 1, wherein: a grab handle (24) is tightly adhered to the tail end of the traction rope (2).

6. The double-ball cage type esophageal electrode of claim 1, wherein: the outer end of the forked end (4) is provided with an interface conversion line (5), the interface conversion line (5) comprises a lead (51), one end, close to the forked end (4), of the lead (51) is connected with an inserting end (511), the inserting end (511) is matched with the forked end (4) in an inserting mode, one end, far away from the forked end (4), of the lead (51) is connected with an output end (512), the surface of the output end (512) is provided with a plurality of contact pieces (5121), the inner wall of the inserting end (511) is provided with a plurality of contact pieces (5111), the contact pieces (5111) are connected with the electrode contact pieces (41), and the electrode contact pieces (41) are connected with the contact pieces (5121) through the lead.