CN220404109U - Hemostatic electrode front end assembly and electrode - Google Patents

Abstract

The utility model belongs to the technical field of medical appliances, and relates to a hemostatic electrode front end assembly, which comprises: an insulating seat, wherein a fluid channel extending towards the distal end is arranged in the insulating seat; the electrode body is at least provided with one group, each group is two, and the adjacent electrode bodies are arranged at the far end of the insulating seat in an insulating and isolating way; the flow dividing block is provided with a flow guiding port for guiding fluid to each electrode body, and the flow guiding port is communicated with the fluid channel. The utility model solves the technical problem that the discharge water is easily influenced by peristaltic pump pressure to cause poor contact between the electrode body and normal saline, has simple structure, does not change the size of the original electrosurgical hemostatic instrument, and can even reduce the size according to the requirement.

Description

Hemostatic electrode front end assembly and electrode

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a hemostatic electrode front end assembly and an electrode.

Background

In the surgical operation, hemostasis treatment is often required, the hemostasis requirements of different parts are different, and some parts only need to stop bleeding and have low requirements for retaining the activity of target tissues; and other parts (such as joint ligaments and tendons) are required to be capable of stopping bleeding effectively, and low in temperature during hemostasis, so that the activity of target tissues can be well reserved.

Electrosurgical hemostatic instruments currently in the market:

monopolar class: the high-frequency electrotome and the high-frequency electrohook are matched with the negative plate to use and do not have a water outlet function.

Bipolar: bipolar coagulation forceps, bipolar coagulation forceps and the like, which do not need to be matched with a negative plate for use and do not have a water outlet function.

Disadvantages:

1. electrosurgical instruments (monopolar and bipolar) without water outlet function are extremely easy to generate toxic smog during coagulation, and are easy to eschar in tissues, severe in knife sticking, high in temperature and extremely easy to generate eschar phenomenon.

2. The monopolar electrotome and the electrohook are required to be matched with the negative plate for use, so that current can flow through most human bodies, and the thermal injury range is large.

3. In endoscopic surgery, the instrument is expected to be small in size, and meanwhile, the structure is required to be simple and effective; at present, although some electrosurgical instruments have a water outlet function, the electrosurgical instruments have complex structures and larger sizes, and are difficult to meet the requirements of endoscopic surgery.

4. The water outlet hole of the existing hemostatic electrode is arranged on the electrode body, water is easily influenced by the pressure applied by the peristaltic pump, and if the pressure is slightly high, physiological saline is extremely easy to surge to the outer side of the electrode body, so that the electrode body cannot be contacted with the physiological saline or is poor in contact, a sticking knife is easily caused after the hemostatic electrode is applied to target tissues, and the hemostatic effect is poor.

Disclosure of Invention

In view of the above, an object of the embodiments of the present utility model is to provide a front end assembly of a hemostatic electrode and an electrode, so as to solve the technical problem that the electrode body is in poor contact with normal saline due to the pressure influence of peristaltic pump when water is discharged, and the structure is simple, the size of the original electrosurgical hemostatic instrument is not changed, and even the size can be reduced as required.

The technical scheme of the utility model is as follows:

a hemostatic electrode front end assembly, the electrode front end assembly comprising:

an insulating seat, wherein a fluid channel extending towards the distal end is arranged in the insulating seat;

the electrode body is at least provided with one group, each group is two, and the adjacent electrode bodies are arranged at the far end of the insulating seat in an insulating and isolating way;

the flow dividing block is provided with a flow guiding port for guiding fluid to each electrode body, and the flow guiding port is communicated with the fluid channel.

Further, the drainage port is positioned at the root of the electrode body and is configured to direct fluid under pressure to directly contact the electrode body and flow from the proximal end to the distal end of the electrode body. This is advantageous in that the physiological saline covers a larger area of the electrode body, so that the electrode body can be kept in sufficient contact with the physiological saline all the time.

Further, the drainage port is positioned between the root and the middle of the electrode body and is configured to direct fluid under pressure to directly contact the electrode body and cause the fluid to repeatedly splash between the electrode bodies during a flow from the proximal end to the distal end of the electrode body. This is advantageous in that the physiological saline covers a larger area of the electrode body, so that the electrode body can be kept in sufficient contact with the physiological saline all the time.

Further, the shunt block is provided with at least one drainage port for draining the corresponding side electrode body. This ensures that each electrode body is in contact with physiological saline.

Further, the drainage port faces to the central axis of the electrode body or two sides of the central axis. The two effects are slightly different, namely when the electrode body faces the central axis of the electrode body, the contact between the inner side of the electrode body (namely, the side facing the drainage port) and the fluid (namely, the physiological saline) is more focused; when the fluid is directed to both sides of the central axis of the electrode body, a certain amount of fluid is guided to contact the outside of the electrode body.

Further, the split blocks are located at the center positions of the electrode bodies, that is, if the electrode bodies have only one pair, the split blocks are located at the middle points of the two electrode center lines, and if the electrode bodies are provided with two or more pairs, the split blocks are surrounded by the electrode bodies and located at the right center positions. This is advantageous in that the drainage port is maintained at the same distance from each electrode body, and the fluid can be more uniformly contacted with the electrode body after being split.

Further, the length of the shunt block (i.e., along the length of the electrode body) is shorter than the length of any electrode body extending distally. This facilitates contact of the distal end of the electrode body with tissue, facilitating surgical procedures.

Further, the width of the shunt block (i.e. the planar direction formed by two electrode bodies side by side when there are only two reference electrode bodies) is smaller than or equal to the distance between the adjacent electrode bodies. This is convenient to place the reposition of redundant personnel piece between the adjacent electrode body, is favorable to drainage mouth to electrode body drainage.

Further, the thickness of the shunt block (i.e. the direction perpendicular to the ground plane formed by the two electrode bodies when there are only two reference electrode bodies) is smaller than or equal to the thickness of the insulating base. This can avoid the reposition of redundant personnel piece to shelter from the sight, is favorable to promoting the observable field of vision of electrode body.

Further, the cross-sectional shape of the drainage port comprises a regular shape or an irregular shape. That is, the cross-sectional shape of the drainage port is not limited as long as it can satisfactorily drain the fluid to the electrode body.

The hemostatic electrode comprises a handle, wherein a working rod is arranged at the far end of the handle, a cable plug and a water inlet pipe are connected to the near end of the handle, the hemostatic electrode further comprises an electrode front end assembly, the electrode front end assembly is arranged at the far end of the working rod, and the water inlet pipe is communicated with a fluid channel.

Compared with the prior art, the utility model has the beneficial effects that:

the front end component of the hemostatic electrode and the electrode thereof are provided with the shunt blocks, and the drainage openings arranged on the shunt blocks are communicated with the fluid channels, so that fluid can be conveniently drained onto each electrode body after flowing out of the fluid channels and is directly contacted with the electrode bodies, the fluid can be directly drained to target tissues, no direct coverage of the fluid on the surface of the target tissues caused by the fact that the fluid is sprayed to the outer sides of the electrode bodies is avoided, the electrode bodies are always in good contact with normal saline, the water outlet cannot be influenced by peristaltic pump pressure, and the hemostatic effect is excellent.

Explanation: under the condition that the electrode works, if fluid is sprayed to the outer side of the electrode body, the surface of the target tissue is not directly covered by the fluid, but under specific conditions, the fluid flows back to the target tissue, at the moment, the electrode body works, and the tissue is easily and rapidly eschared due to the fact that the tissue is not covered by the fluid, the hemostatic effect is poor, and a knife is easily stuck.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. The above and other objects, features and advantages of the present utility model will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the several views of the drawings. The drawings are not intended to be drawn to scale, with emphasis instead being placed upon illustrating the principles of the utility model.

Fig. 1 is a schematic diagram of the overall structure of a hemostatic electrode according to the present utility model;

fig. 2 is a cross-sectional view of an overall structure of a hemostatic electrode according to the present utility model;

FIG. 3 is a partial view of a working rod and electrode front end assembly provided by the present utility model;

FIG. 4 is an exploded view of the assembled structure of the working rod and electrode front end assembly provided by the present utility model;

FIG. 5 is a cross-sectional view of the front end assembly of the portion A-electrode of FIG. 2, in accordance with the present utility model;

FIG. 6 is a schematic illustration of a fluid diversion provided by the present utility model;

fig. 7 is an enlarged view of the portion B of fig. 2-the handle provided by the present utility model.

Reference numerals:

1-an electrode front end assembly; 2-a handle; 3-a working rod; 4-a cable plug; 5-a water inlet pipe;

11-an insulating base; 12-an electrode body; 13-a split block; 14-a fluid channel; 15-drainage port;

41-conducting wires;

51-liquid injection assembly.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The angle of operation can be interpreted as the angle with the target tissue at each use position.

It should be noted that, in the following, the terms "distal" and "proximal" are defined in terms of the positional relationship with the focal tissue, and "distal" refers to the end of the component that is close to the tissue, and "proximal" refers to the end of the component that is far from the tissue.

Examples

As described with reference to fig. 1 to 7, the present utility model provides a front end assembly of a hemostatic electrode, where the front end assembly 1 includes:

an insulating seat 11, in which a distally extending fluid channel 14 is arranged;

the electrode bodies 12 are preferably arranged in one group, each group is two, and adjacent electrode bodies are arranged at the far end of the insulating seat in an insulating and isolating way; the two electrode bodies can be the same in polarity or opposite in polarity, namely, when the polarities are the same, the assembled hemostatic electrode needs to be matched with the negative plate for use; when the polarity is opposite, the hemostatic range is more accurate and safer.

The diverter block 13 is provided with a drainage port 15 for guiding fluid to each electrode body, which drainage port communicates with the fluid channel.

The shunt block 13 has at least one drainage port for draining current to the corresponding side electrode body 12. At this time, the drainage port may be a hole with both ends facing the electrode body, and the hole may be a through hole in the shunt block, or may be surrounded by the insulating base and the shunt block.

The drainage port 15 is located at the root of the electrode body 12 (i.e. the junction of the insulating seat 11 and the electrode body 12) and is configured to direct fluid under pressure (which includes the pressure exerted by the peristaltic pump and the pressure exerted by the insulating seat 11) to directly contact the electrode body and flow from the proximal end to the distal end of the electrode body. In this case, the electrode body may be columnar, needle-like, plate-like, etc., and the surface thereof may be smooth or rough.

The drainage openings face the central axis of the electrode body 12 or both sides of the central axis.

The length of the shunt 13 is shorter than the length of any electrode body 12 extending distally.

The width of the shunt blocks 13 is smaller than or equal to the interval between the adjacent electrode bodies 12.

The thickness of the shunt block 13 is less than or equal to the thickness of the insulating base 11.

With the above scheme, when the electrode body 12 is set to two opposite polarities, the following features are summarized:

characteristic 1: has the function of water passage;

the problems are solved: (1) can prevent the target tissue from being too high in temperature and easy to coke; (2) preventing the electrode from sticking.

The reason is that: the high-frequency current heats the tissue, the heating effect is strong, the temperature reaches 200-300 ℃, and the tissue eschar is easy to be caused. The tissue is sprayed with normal saline, so that the temperature of the tissue is controlled within 100 ℃, and the optimal coagulation effect can be achieved while the eschar of the tissue is not caused. The physiological saline is sprayed on the electrode tip, so that the temperature of the electrode tip is greatly reduced, the phenomenon of blood knife sticking can be effectively reduced, too fast drying of tissues can be avoided, and deep hemostasis cannot be better achieved.

Characteristic 2: has a bipolar structure;

the problems are solved: (1) the negative plate is not required to be used; (2) ensuring that current only flows between the two electrode bodies, reducing thermal damage;

the reason is that: one of the electrode bodies 12 acts as a negative plate, and when the electrode is in operation, current only flows between the two electrode bodies, and the surface and deep tissues of the target tissue are coagulated and hemostatic under the auxiliary action of physiological saline water.

Characteristic 3: has a simple and effective water-through structure;

the problems are solved: (1) the structure is simplified so as to meet the requirements of endoscopic surgery; (2) when the electrode is used by an operator, no matter what angle or posture the electrode is used, each electrode can be ensured to be contacted with physiological saline (including contact modes such as spraying, splashing and immersing).

The reason is that: the normal saline flows out from the water outlet pipe and is blocked by the water blocking block, so that water flows to two sides, and the water can uniformly flow through the two electrode heads, so that the direct ejection is avoided, and the electrode heads cannot be reached.

The basic principle of the utility model is as follows:

1. when the electrode body 12 works, the temperature of the tissue is raised, the water in the tissue is dehydrated, and the tissue is dried and contracted, so that the coagulation (with the best effect at 70-100 ℃) is realized.

2. When high-frequency current passes through human tissue, the tissue heats, i.e. the thermal effect of the high-frequency current.

3. During coagulation, the high-frequency current heats the tissue (the heating effect is strong, the tissue eschar is easy to cause), the electrode body cannot generate heat, and the heat of the electrode body is derived from the tissue.

The embodiment also provides a hemostatic electrode, which comprises a handle 2, a working rod 3 is arranged at the distal end of the handle, a cable plug 4 and a water inlet pipe 5 are connected to the proximal end of the handle, the hemostatic electrode further comprises an electrode front end assembly 1, the electrode front end assembly is arranged at the distal end of the working rod, and the water inlet pipe is communicated with a fluid channel.

The fluid channel may be a part of the water inlet pipe 5, a through hole of the insulating seat, or a combination of the two, that is, a part of the water inlet pipe 5 is inserted into the through hole of the insulating seat to form the fluid channel. The water inlet pipe 5 can be integrated or separated, a PCV hose or the like can be generally adopted, and the water inlet pipe 5 can be provided with the liquid injection assembly 51.

The electrode body 12 is connected with the cable plug 4 through a wire 41, and the wire and the water inlet pipe 5 are respectively arranged in the working rod 3 and the handle 2 in a penetrating way.

The electrode body 12 can be penetrated in the insulating seat 11 and can be fixed by matching with screw thread gluing.

The insulator base 12 is typically made of an insulating material such as ceramic, is generally flat, and may be generally configured to be thinner from the proximal end toward the distal end (i.e., to be flatter from the proximal end toward the distal end), and may be mounted to the working rod by providing threads on the proximal end.

The arrangement mode is to enable the fluid to be fully contacted with the electrode body and then drain the fluid to the target tissue through the electrode body, so that the technical problems that the hemostatic effect is poor and the knife is easy to adhere due to the fact that the surface of the target tissue is not directly covered by the fluid due to the fact that the fluid is sprayed to the outer side of the electrode body are avoided.

The shunt block 13 may have a structure with a substantially U-shaped cross section, and one side of the cross section opening is embedded in the insulating seat 11 through a clamping piece and is matched with the insulating seat to form a drainage port 15 for shunting to the two electrode bodies 12; the shunt block 13 may have a substantially rectangular cross section, and one side thereof may be inserted into the insulating holder 11 via a clip, and the shunt block 13 itself may be provided with a drainage port 15 for shunting current to the two electrode bodies 12. The above modes can be further fixed by gluing so as to prevent the split blocks from falling off.

The cross-sectional shape of the drainage port 15 includes a regular shape such as a primitive shape, a rectangle shape, a triangle shape, a trapezoid shape, a parallelogram shape, a regular polygon shape, or the like, or an irregular shape, that is, a shape other than the regular shape. That is, the cross-sectional shape of the drainage port is not limited as long as it can satisfactorily drain the fluid to the electrode body.

Examples

The main difference from the other embodiments is that in this embodiment, the drainage port 15 is located between the root portion (i.e. the joint between the insulating base 11 and the electrode body 12) and the middle portion of the electrode body 12, and is configured to direct the fluid under pressure to directly contact the electrode bodies, and to allow the fluid to repeatedly splash (i.e. contain the collision) between the electrode bodies during the process of flowing from the proximal end to the distal end of the electrode bodies. In this case, the electrode body may be cylindrical, needle-shaped, sheet-shaped, or formed by extending and encircling the electrode wire from the proximal end to the distal end in a circle, and each circle after encircling the electrode wire may have the same or different diameters, for example, the diameters become gradually larger and the diameters become gradually smaller, and the diameters of adjacent circles are changed from large to small to large to small (not shown in the drawings). The surface of the electrode body may be smooth or rough.

Examples

The main difference from the other embodiments is that in this embodiment, the electrode bodies (not shown in the drawings) are arranged in two or more groups, and the split blocks 13 are located at the center positions of the respective electrode bodies 12.

All the electrode bodies can be the same in polarity, or can be opposite in polarity, namely, when the polarities are the same, the assembled hemostatic electrode needs to be matched with a negative plate for use.

If the two electrode bodies in each group are opposite in polarity, the polarities of the adjacent electrode bodies are preferably opposite; the electrode bodies with the same polarity can be arranged on the same side.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A hemostatic electrode front end assembly, characterized in that the electrode front end assembly (1) comprises:

an insulating seat (11) in which a distally extending fluid channel (14) is arranged;

the electrode bodies (12) are at least provided with one group, each group is two, and adjacent electrode bodies are arranged at the far end of the insulating seat in an insulating and isolating way;

and the flow dividing block (13) is provided with a drainage port (15) for guiding fluid to each electrode body, and the drainage port is communicated with the fluid channel.

2. A hemostatic electrode front assembly according to claim 1 wherein the drainage port (15) is located at the root of the electrode body (12) and is configured to direct fluid under pressure to directly contact the electrode body and flow from the proximal end to the distal end of the electrode body.

3. A hemostatic electrode front assembly according to claim 1 wherein the drainage port (15) is located between the root and middle of the electrode body (12) and is configured to direct fluid under pressure into direct contact with the electrode body and to cause fluid to repeatedly splash between the electrode bodies during flow from the proximal end to the distal end of the electrode body.

4. A hemostatic electrode front assembly according to claim 1 wherein the drainage port is directed towards or on either side of the central axis of the electrode body (12).

5. A hemostatic electrode front end assembly according to claim 1 wherein the diverter blocks (13) are centrally located in the respective electrode bodies (12).

6. A hemostatic electrode front assembly according to claim 1 wherein the length of the shunt block (13) is shorter than the distally extending length of either electrode body (12).

7. A hemostatic electrode front end assembly according to claim 1 wherein the width of the diverter blocks (13) is less than or equal to the spacing between adjacent electrode bodies (12).

8. A hemostatic electrode front end assembly according to claim 1 wherein the thickness of the shunt block (13) is less than or equal to the thickness of the insulating seat (11).

9. A hemostatic electrode front assembly according to claim 1 wherein the cross-sectional shape of the drainage port (15) comprises a regular shape.

10. The hemostatic electrode comprises a handle (2), a working rod (3) is arranged at the far end of the handle, a cable plug (4) and a water inlet pipe (5) are connected to the near end of the handle, and the hemostatic electrode is characterized by further comprising the electrode front end assembly (1) according to any one of claims 1-9, the electrode front end assembly is arranged at the far end of the working rod, and the water inlet pipe is communicated with a fluid channel.