Bipolar insulating clamp head and bipolar insulating assembly

Abstract

The present invention relates to the field of medical device technology, and in particular to a bipolar insulating forceps head and a bipolar insulating assembly, comprising a first forceps head and a second forceps head, an insulating assembly being provided between the first forceps head and the second forceps head, the insulating assembly comprising a first insulating part and a second insulating part being fixedly connected, the first insulating part being provided with a through hole for rotatably connecting with the second forceps head, the first insulating part and the second insulating part cooperating to partially wrap the first forceps head, the second insulating part at least partially overlapping with the first insulating part along the radial direction of the through hole, the present invention adopts an insulating part to achieve the insulation of the two forceps heads, and has the advantages of high hardness, high wear resistance, high adhesion, high temperature resistance, high insulation performance, long service life, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a bipolar insulating forceps head and a bipolar insulating component. Background Art

[0002] Current high-frequency surgical instruments, such as electrosurgical pen, high-frequency separating forceps, high-frequency electric hooks, and high-frequency shears, can be categorized as monopolar or bipolar based on how the high-frequency energy is transmitted. During operation, monopolar instruments deliver high-frequency electricity from the electrode tip to the surgical site, flow through the body, and then exit the body through the neutral electrode. Therefore, monopolar operation can cause significant secondary damage and is unsuitable for delicate procedures. Because monopolar mode typically delivers higher power, it is clinically used primarily for tissue cutting and punctate hemorrhage clotting. During operation, bipolar instruments deliver high-frequency electricity only between the two electrodes of the electrode tip, resulting in less secondary damage and more concentrated energy. They are clinically used primarily for coagulation of delicate tissue. During surgery, surgeons need to choose between monopolar and bipolar instruments based on the specific situation, frequently switching between them. Frequent instrument switching inevitably affects the surgeon's concentration, hinders surgical coordination, increases fatigue, and increases surgical time and risk.

[0003] The present invention aims to provide a bipolar insulated forceps head, comprising a first forceps head and a second forceps head, wherein the first forceps head is connected to a first potential and the second forceps head is connected to a second potential, so that a potential gradient is generated, and energy is conducted through the tissue of the first forceps head and the second forceps head, thereby performing a tissue coagulation or cutting (clamping) operation. The withstand voltage between the first forceps head and the second forceps head needs to reach 1800V, so there is a high insulation requirement between the first forceps head and the second forceps head. The means that can be used in the prior art include using insulating glue, spraying or integral injection molding, etc., such as application number 20142086453. Patent 8.2 discloses a clamp insulation device for bipolar electrocoagulation forceps. The insulating part is injection molded once and fixed to the No. 1 clamp. However, no matter whether it is sprayed with glue, injection molded or one-piece injection molded, there will be bubbles or pores. Under the above-mentioned voltage of more than 1800V, it is easy to cause the first clamp head and the second clamp head to be punctured, and the bubbles and pores generated are uncontrollable and not easy to measure. In addition, if bubbles or pores are generated, the clamp head must be scrapped together. From a certain perspective, spraying glue or one-piece injection molding also has the problem of wasting costs. Summary of the Invention

[0004] In order to solve the problem of poor insulation effect of the pliers head in the prior art, the present invention provides a bipolar insulating pliers head and a bipolar insulating assembly with good insulation effect.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A bipolar insulating pliers head includes a first pliers head and a second pliers head, an insulating assembly is provided between the first pliers head and the second pliers head, the insulating assembly includes a first insulating part and a second insulating part that are fixedly connected, the first insulating part is provided with a through hole for rotationally connecting to the second pliers head, the first insulating part and the second insulating part cooperate to partially wrap the first pliers head, and the second insulating part overlaps with the first insulating part at least along the radial direction of the through hole.

[0007] Furthermore, the first insulating member and the second insulating member are detachably fixed.

[0008] Furthermore, the first insulating member and the second insulating member are fixed by snapping.

[0009] Furthermore, the first insulating member is provided with a first receiving groove for receiving the second insulating member, and the end surface of the second insulating member facing the first insulating member is provided with a second receiving groove for receiving the first pliers head, and the shape of the second receiving groove matches the first pliers head.

[0010] Furthermore, the depth direction of the first receiving groove is parallel to the axial direction of the through hole, and the second insulating member and the first clamp head both abut against the bottom of the first receiving groove of the first insulating member.

[0011] Furthermore, the first pliers head has a first leg and a second leg, and the second leg and the first leg are respectively located on either side of the through hole. In this way, the through holes are located on both sides of the first leg and the second leg, which not only saves assembly space, but also ensures that the force applied to the first pliers head is balanced, which is conducive to smooth movement.

[0012] Furthermore, the first and second pliers heads have teeth for clamping tissue and pliers tips for cutting tissue. In addition to the teeth and pliers tips, the first and second pliers heads are provided with an insulating layer at other positions, and the insulating layer is a frosted insulating layer.

[0013] A bipolar insulating component, the above-mentioned bipolar insulating pliers head also includes a pipe fitting, a pull rod is movably provided in the pipe fitting, the pull rod is hinged to the first pliers head, a pliers seat is installed at the first end of the pipe fitting, the second pliers head is hinged to the pliers seat, the second end of the pipe fitting is provided with a first insulating sleeve for guiding the pull rod, and the pliers seat is provided with a second insulating sleeve for limiting the pull rod.

[0014] Furthermore, the inner diameter of the second insulating sleeve is larger than that of the pull rod, and smaller than that of the clamp base. Thus, the pull rod is guided by the first insulating sleeve, while the second insulating sleeve limits the pull rod, preventing it from contacting the clamp base. This prevents the pull rod from swinging and rubbing against the clamp base, which could even wear away the plastic coating and cause a breakdown.

[0015] Furthermore, a plastic coating layer is provided on the pull rod, and the plastic coating layer extends to a position close to the hinge between the pull rod and the first clamp head.

[0016] Beneficial effects:.

[0017] (1) The present invention uses an insulating member to achieve insulation between the two clamp heads, which has the advantages of high hardness, high wear resistance, high adhesion, high temperature resistance, high insulation performance, and long service life. In addition, there is an insulating sleeve between the pull rod and the pipe fitting, and a plastic coating is provided on the pull rod. The withstand voltage between the two clamp heads can reach 1800V, which is safe and reliable.

[0018] (2) Compared with other instruments that only have a monopolar mode, this instrument not only has all the monopolar functions of other instruments but also has bipolar functions. The bipolar electrocoagulation function of the instrument is to provide high-frequency electrical energy to the body tissue through the two tips of the bipolar forceps, so that the blood vessels between the two ends of the bipolar forceps are dehydrated and coagulated, achieving the purpose of hemostasis. Its range of action is limited to the area between the two forceps heads, and the degree of damage to the body tissue and the range of influence are much smaller than the monopolar method. It is suitable for sealing small blood vessels (diameter <4mm) and fallopian tubes, and its safety is higher than that of monopolar.

[0019] (3) In the prior art, a through hole for hinged connection with the second clamp head is provided on the first clamp head, and then an insulating layer is sprayed or integrally injection-molded on the first clamp head, and the size is based on the first clamp head, which has limitations. In this patent, a through hole is provided on the first insulation, that is, the size is based on the first insulating member, so that the distance between the first leg and the second leg of the first clamp head can be adjusted, that is, the distance between the first clamp head and the second clamp head at the hinge point can be appropriately adjusted according to the requirement of the withstand voltage value, and the adjustable range is wide;

[0020] (4) The insulating parts of the present invention are detachably connected. If the first insulating part and / or the second insulating part do not meet the test standards during processing, only the first insulating part and / or the second insulating part can be replaced and tested again. The first pliers and the second pliers can continue to be used until the test meets the requirements. The insulating layer can be directly sprayed or integrally injection-molded on the pliers. If the pressure resistance of the pliers does not meet the standards, they need to be scrapped together with the first pliers or the second pliers. Therefore, the bipolar insulating pliers of the present invention can save costs compared with the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1It is an assembly stereoscopic structure of the first clamp head, the first insulating member and the second insulating member. Figure 1 ;

[0023] Figure 2 It is an assembly stereoscopic structure of the first clamp head, the first insulating member and the second insulating member. Figure 2 ;

[0024] Figure 3 It is an assembled front view of the first clamp head, the first insulating member and the second insulating member;

[0025] Figure 4 for Figure 3 Cross-sectional view along AA;

[0026] Figure 5 for Figure 3 Cross-sectional view along CC;

[0027] Figure 6 is a structural diagram of an embodiment of a first clamp head;

[0028] Figure 7 FIG1 is a structural diagram of another embodiment of the first clamp head;

[0029] Figure 8 It is a front cross-sectional view of the overall structure of the bipolar insulation assembly;

[0030] Figure 9 for Figure 8 A partial enlarged view of point B in the middle;

[0031] Figure 10 It is a side view of the overall structure of the bipolar insulation assembly;

[0032] Figure 11 It is a partial cross-sectional view of the overall structure of the bipolar insulation component.

[0033] Among them, 1. first clamp head, 11. first leg, 12. second leg, 2. second clamp head, 3. first insulating part, 31. through hole, 32. first accommodating groove, 4. second insulating part, 41. second accommodating groove, 5. pipe fitting, 6. pull rod, 7. clamp seat, 8. first insulating sleeve, 9. second insulating sleeve. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0037] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0039] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0040] The present invention aims to provide a bipolar insulated pliers head, including a first pliers head and a second pliers head, the first pliers head is connected to a first potential, and the second pliers head is connected to a second potential, so that a potential gradient is generated, and energy is conducted through the tissue of the first pliers head and the second pliers head, thereby performing tissue coagulation or cutting (clamping) operations. The withstand voltage value between the first pliers head and the second pliers head needs to reach 1800V, so there are higher insulation requirements between the first pliers head and the second pliers head.

[0041] The present invention first considers providing an insulating component between the first pliers 1 and the second pliers 2, such as splicing two separate insulating parts, and then fixing the two separate insulating parts by ultrasonic welding. However, there is still a gap at the splicing point, and there is still a risk of breakdown.

[0042] In order to overcome the above problems, Figures 1 to 7The insulating assembly of the present invention includes a first insulating part 3 and a second insulating part 4. The first insulating part 3 is provided with a through hole 31 for rotatably connecting with the second pliers 2. The first insulating part 3 and the second insulating part 4 cooperate to partially wrap the first pliers 1, and the second insulating part 4 overlaps with the first insulating part 3 at least partially along the radial direction of the through hole 31. In the present invention, the first insulating part 3 and the second insulating part 4 are fixed by snapping. Of course, for the sake of safety, the first insulating part 3 and the second insulating part 4 can also be reinforced by glue after being snapped. The first insulating part 3 is provided with a first receiving groove 32 for accommodating the second insulating part 4. The end surface of the second insulating part 4 facing the first insulating part 3 is provided with a second receiving groove 41 for accommodating the first pliers 1. The shape of the second receiving groove 41 matches the first pliers 1. The depth direction of the first receiving groove 32 is parallel to the axial direction of the through hole 31. The second insulating part 4 and the first pliers 1 both interfere with the bottom of the first receiving groove 32 of the first insulating part 3.

[0043] The first clamp head 1 has a first leg 11 and a second leg 12, and the second leg 12 and the first leg 11 are respectively located on both sides of the through hole 31. The through hole in the patent application number 201420864538.2 is set on the first clamp 51, and then the first clamp 51 is sprayed with glue or integrally injection molded, which has limitations. In this patent, a through hole is set on the first insulator, and the distance between the first leg and the second leg of the first clamp head can be adjusted, such as Figure 6 and Figure 7 In this way, the distance between the first clamp head and the second clamp head at the hinge point can be adjusted, and the distance between the first leg and the second leg can be appropriately adjusted according to the voltage.

[0044] The first and second pliers heads 1 and 2 have teeth for gripping tissue and tips for cutting tissue. Except for the teeth and tips, the first and second pliers heads 1 and 2 are provided with an insulating layer, which is a frosted insulating layer. The frosted insulating layer prevents reflections from affecting the doctor's vision.

[0045] like Figures 8-11 The present invention also provides a bipolar insulating assembly, including the above-mentioned bipolar insulating pliers head, and also includes a pipe fitting 5, the pipe fitting 5 includes a sleeve and a steel pipe, a pull rod 6 is movably provided in the pipe fitting 5, the pull rod 6 is hinged to the first pliers head 1, a clamp seat 7 is installed at the first end of the pipe fitting 5, the clamp seat 7 can be fixed with the steel pipe thread of the pipe fitting 5, the second pliers head 2 is hinged to the clamp seat 7, the second end of the pipe fitting 5 is provided with a first insulating sleeve 8 for guiding the pull rod 6, and the clamp seat 7 is provided with a second insulating sleeve 9 for limiting the pull rod 6. The surfaces of the pipe fitting 5 and the clamp seat 7 need to be insulated by spraying or wrapping insulating material.

[0046] The inner diameter of the second insulating sleeve 9 is larger than that of the pull rod 6, and smaller than that of the clamp seat 7. In this way, the pull rod is guided by the first insulating sleeve, and the second insulating sleeve can limit the pull rod, so that the pull rod will not contact the clamp seat, preventing the pull rod from rubbing against the clamp seat after swinging, or even wearing away the plastic coating and causing breakdown.

[0047] The pull rod 6 is provided with a plastic coating, which extends to the hinge position close to the pull rod 6 and the first clamp head 1, thereby ensuring the insulation effect and preventing the pull rod 6 and the clamp seat 7 from being filled with tissue fluid and causing breakdown.

[0048] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A bipolar insulated pliers head, characterized in that : comprising a first pliers head (1) and a second pliers head (2), an insulating assembly is provided between the first pliers head (1) and the second pliers head (2), the insulating assembly comprising a first insulating member (3) and a second insulating member (4) which are fixedly connected, the first insulating member (3) being provided with a through hole (31) for being rotatably connected to the second pliers head (2), the first insulating member (3) and the second insulating member (4) cooperating to partially wrap the first pliers head (1), and the second insulating member (4) at least partially overlapping the first insulating member (3) along the radial direction of the through hole (31); The first insulating member (3) and the second insulating member (4) are detachably fixed; The first insulating member (3) and the second insulating member (4) are fixed by snapping; The first insulating member (3) is provided with a first receiving groove (32) for receiving the second insulating member (4); the end surface of the second insulating member (4) facing the first insulating member (3) is provided with a second receiving groove (41) for receiving the first clamp head (1); the shape of the second receiving groove (41) matches that of the first clamp head (1); The depth direction of the first receiving groove (32) is parallel to the axial direction of the through hole (31), and the second insulating member (4) and the first clamp head (1) both abut against the bottom of the first receiving groove (32) of the first insulating member (3); The first pliers head (1) comprises a first leg (11) and a second leg (12), wherein the second leg (12) and the first leg (11) are respectively located on both sides of the through hole (31).

2. A bipolar insulated pliers head according to claim 1, characterized in that: The first pliers head (1) and the second pliers head (2) are provided with teeth for clamping tissue and pliers tips for cutting tissue. In addition to the teeth and pliers tips, the first pliers head (1) and the second pliers head (2) are provided with an insulating layer at other locations. The insulating layer is a frosted insulating layer.

3. A bipolar insulating assembly comprising the bipolar insulating pliers head according to any one of claims 1 to 2, characterized in that: It also includes a pipe fitting (5), a pull rod (6) is movably provided in the pipe fitting (5), the pull rod (6) is hinged to the first clamp head (1), a clamp seat (7) is installed on the first end of the pipe fitting (5), the second clamp head (2) is hinged to the clamp seat (7), the second end of the pipe fitting (5) is provided with a first insulating sleeve (8) for guiding the pull rod (6), and the clamp seat (7) is provided with a second insulating sleeve (9) for limiting the pull rod (6).

4. A bipolar insulating assembly according to claim 3, characterized in that: The inner diameter of the second insulating sleeve (9) is larger than the inner diameter of the pull rod (6), and the inner diameter of the second insulating sleeve (9) is smaller than the inner diameter of the clamp seat (7).

5. A bipolar insulating assembly according to claim 3, characterized in that: The pull rod (6) is provided with a plastic coating layer, and the plastic coating layer extends to a position close to the hinge between the pull rod (6) and the first clamp head (1).

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