Bipolar forceps head structure and bipolar medical instrument

Abstract

The utility model relates to a bipolar tong head structure and a bipolar medical instrument. The bipolar tong head structure comprises a tong head base, an insulating spacer bush, an outer tube, a connecting column, a first bipolar tong head, a second bipolar tong head, a tong jaw insulating sleeve and an insulating column. The clamp jaw insulation sleeve insulates and isolates the contact position between the first bipolar clamp head and the second bipolar clamp head and insulates and isolates the first bipolar clamp head and the end of the outer tube, full wrapping isolation is achieved, and the insulation effect between the first bipolar clamp head and the second bipolar clamp head is improved. And due to the arrangement of the insulating column, the insulating effect between the first bipolar plier head and the second bipolar plier head is further ensured while the first bipolar plier head and the second bipolar plier head are rotationally connected. And the insulating spacer bush is used for insulating and isolating the outer pipe and the tong head base. The bipolar plier head structure has a good insulation effect, the undesirable phenomena such as electrode failure or electric leakage and creepage are not prone to occurring even if the bipolar plier head structure encounters liquid and the like in the using process, and the bipolar plier head structure has very high using safety.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a bipolar forceps head structure and a bipolar medical device. Background Technology

[0002] Electrosurgical equipment is already standard equipment in hospitals. Various electrode heads have been developed for different surgeries. Among them, bipolar electrosurgical instruments are widely used. The principle is to integrate the positive and negative electrodes of the electrosurgical instrument into a single medical device. This requires that the positive and negative electrodes of the instrument be insulated. Especially for laparoscopic surgery, which is now being vigorously promoted in hospitals, the size of the entire forceps head must be controlled within 5mm, which places high demands on the insulation of the forceps head.

[0003] Existing bipolar clamp head structures often achieve insulation by leaving a gap between the two clamp heads. However, when exposed to liquids during use, electrode failure or leakage / creeping can occur, posing significant risks. Utility Model Content

[0004] Therefore, it is necessary to provide a bipolar clamp head structure and bipolar medical device that can solve the problems of electrode failure or leakage and creepage when exposed to liquids, and improve the safety of use.

[0005] A bipolar clamp head structure, comprising:

[0006] The plier head base is a hollow tubular structure with openings at both ends; one end of the plier head base has a first support end and a second support end that are opposite to each other and spaced apart along a first direction;

[0007] An insulating spacer is inserted at the end of the pliers base away from the first support end;

[0008] The outer tube is inserted at one end and fixed inside the insulating sleeve;

[0009] The connector is slidably inserted into the outer tube; one end of the connector has a rotatable mounting point;

[0010] The first bipolar pliers head has a first rotating connection point and a first rotating connection hole at one end; the first bipolar pliers head extends into the pliers head base, and the first rotating connection point is rotatably connected to the first support end and the second support end respectively;

[0011] The second bipolar pliers head has a second rotating connection point and a second rotating connection hole at one end; one end of the first bipolar pliers head extends into the pliers head base; the second rotating connection point rotates with the rotating mounting point.

[0012] A jaw insulating sleeve is wrapped around one end of the second bipolar jaw that has the second rotating connection hole, and a through hole communicating with the second rotating connection hole is formed.

[0013] An insulating post is rotatably inserted sequentially through the first rotating connection hole, the through hole, and the second rotating connection hole to rotatably connect the first bipolar pliers and the second bipolar pliers.

[0014] The jaw insulating sleeve is configured to isolate between the first bipolar jaw and the second bipolar jaw, and between the first bipolar jaw and the end of the outer tube.

[0015] In one embodiment, the second bipolar clamp head and the clamp jaw insulating sleeve are integrally injection molded.

[0016] In one embodiment, the inner wall edges at both ends of the second rotating connection hole are provided with annular grooves along the circumference; the inner ring of the jaw insulating sleeve located at the edge of the through hole is injection molded and embedded in the annular groove.

[0017] In one embodiment, one end of the first bipolar clamp head has two spaced-apart support end plates along the first direction; each support end plate has a first rotatable connection point and a first rotatable connection hole; in the first direction, the two first rotatable connection points are aligned, and the two first rotatable connection holes are aligned; the two first rotatable connection points are respectively rotatably connected to the first support end and the second support end; the portion of the second bipolar clamp head that wraps around the clamp jaw insulating sleeve is located between the two support end plates; the two ends of the insulating post are respectively rotatably inserted through the two first rotatable connection holes.

[0018] In one embodiment, mounting grooves are formed on both sides of the jaw insulating sleeve; the two mounting grooves are arranged opposite to each other along the first direction; each mounting groove has a through hole; the two support end plates are respectively located in the two mounting grooves; in the first direction, the width of the jaw insulating sleeve near the outer tube is greater than the outer diameter of the outer tube, and the width of the jaw insulating sleeve away from the outer tube is greater than or equal to the outer distance between the first support end and the second support end.

[0019] In one embodiment, the two first rotatable connection points are rotatably connected to the first support end and the second support end respectively via a rotating shaft;

[0020] The jaw insulating sleeve has a clearance notch at the end away from the outer tube and facing the rotating shaft; the rotating shaft is located within the clearance notch.

[0021] In one embodiment, the through hole is coaxially arranged with the second rotatable connection hole.

[0022] In one embodiment, the insulating post is a ceramic pin.

[0023] In one embodiment, the outer tube is a PTFE tube.

[0024] A bipolar medical device comprising the bipolar forceps structure as described above.

[0025] The aforementioned bipolar clamp head structure and bipolar medical device utilize a clamp jaw insulating sleeve to insulate the contact points between the first and second bipolar clamp heads, as well as the area between the first bipolar clamp head and the end of the outer tube. This achieves complete encapsulation and isolation of the second bipolar clamp head, enhancing the insulation effect between them. The insulating post further ensures insulation between the first and second bipolar clamp heads while maintaining a rotatable connection. The insulating sleeve insulates between the outer tube and the clamp head base, preventing current from the connecting post from sequentially conducting through the outer tube and clamp head base to the first bipolar clamp head, thus avoiding electrode failure, leakage, or creepage. Therefore, the aforementioned bipolar clamp head structure offers excellent insulation, minimizing the risk of electrode failure or leakage even when exposed to liquids, ensuring high safety during use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the bipolar clamp head structure in a preferred embodiment of the present invention;

[0027] Figure 2 for Figure 1 A cross-sectional view of the bipolar clamp head structure shown;

[0028] Figure 3 for Figure 1 A schematic diagram of the jaw base in the bipolar jaw structure shown;

[0029] Figure 4 for Figure 1 The diagram shows the structural schematic of the connecting post in the bipolar clamp head structure.

[0030] Figure 5 for Figure 1 A schematic diagram of the structure of the first bipolar clamp head in the bipolar clamp head structure shown;

[0031] Figure 6 for Figure 1 A schematic diagram of the structure of the second bipolar clamp head in the bipolar clamp head structure shown;

[0032] Figure 7 for Figure 1 A schematic diagram showing the positional relationship between the second bipolar jaw and the jaw insulating sleeve in the bipolar jaw structure shown;

[0033] Figure 8 for Figure 7 A cross-sectional view (AA) showing the positional relationship between the second bipolar clamp head and the clamp jaw insulating sleeve.

[0034] Labeling Explanation: 100, Bipolar clamp head structure; 110, Clamp head base; 111, First support end; 1111, First rotating hole; 112, Second support end; 1121, Second rotating hole; 120, Insulating sleeve; 130, Outer tube; 140, Connecting post; 141, Rotating mounting point; 150, First bipolar clamp head; 151, First rotating connection point; 152, First rotating connection hole; 153, Support end plate; 160, Second bipolar clamp head; 161, Second rotating connection point; 162, Second rotating connection hole; 163, Annular groove; 170, Clamp jaw insulating sleeve; 171, Through hole; 172, Mounting groove; 173, Clearance notch; 180, Insulating post; 190, Rotating shaft; 10, First direction. Detailed Implementation

[0035] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements. It is also understood that when an element is referred to as being "between" two elements, it may be the only one between the two elements, or there may be one or more intermediate elements.

[0038] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0039] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0040] This invention provides a bipolar forceps head structure and a bipolar medical device. The bipolar medical device includes the bipolar forceps head structure.

[0041] Please see Figure 1 and Figure 2 The preferred embodiment of the present invention includes a bipolar plier head structure 100 comprising a plier head base 110, an insulating sleeve 120, an outer tube 130, a connector 140, a first bipolar plier head 150, a second bipolar plier head 160, a jaw insulating sleeve 170, and an insulating column 180.

[0042] Please refer to the following: Figure 3 The plier head base 110 is a hollow tubular structure with openings at both ends. One end of the plier head base 110 has a first support end 111 and a second support end 112 that are opposite to each other and spaced apart along a first direction 10. The first direction 10 is perpendicular to the axial direction of the plier head base 110.

[0043] An insulating spacer 120 is inserted through the end of the pliers base 110 away from the first support end 111. The insulating spacer 120 can be made of a soft material such as rubber or plastic that has electrical insulation properties.

[0044] One end of the outer tube 130 is inserted into and fixed inside the insulating sleeve 120. Thus, the insulating sleeve 120 is held between the outer tube 130 and the pliers base 110 to provide insulation between the outer tube 130 and the pliers base 110.

[0045] Specifically, the outer tube 130 is made of PTFE, which gives it reliable and excellent corrosion resistance and high electrical insulation performance, extending its service life while reducing the probability of risks such as leakage.

[0046] Please refer to the following: Figure 4 The connector 140 is slidably inserted inside the outer tube 130. One end of the connector 140 has a rotatable mounting point 141.

[0047] Please refer to the following: Figure 5One end of the first bipolar pliers head 150 has a first rotating connection point 151 and a first rotating connection hole 152. The first bipolar pliers head 150 extends into the pliers head base 110, and the first rotating connection point 151 is rotatably connected to the first support end 111 and the second support end 112, respectively.

[0048] Please refer to the following: Figure 6 The second bipolar clamp head 160 has a second rotating connection point 161 and a second rotating connection hole 162 at one end. One end of the first bipolar clamp head 150 extends into the clamp head base 110. The second rotating connection point 161 rotates with the rotating mounting point 141, thereby electrically connecting the second bipolar clamp head 160 and the connector 140.

[0049] Please refer to the following: Figure 7 The jaw insulating sleeve 170 wraps around one end of the second bipolar pliers head 160, which has a second rotating connection hole 162, and forms a through hole 171 communicating with the second rotating connection hole 162. The jaw insulating sleeve 170 can be wrapped around the bipolar pliers head by slipping it on, by injection molding it directly onto the surface of the bipolar pliers head, or by other methods that can tightly wrap around the bipolar pliers head. The jaw insulating sleeve 170 is configured to isolate between the first bipolar pliers head 150 and the second bipolar pliers head 160, and between the first bipolar pliers head 150 and the end of the outer tube 130.

[0050] Please refer to the following: Figure 8 Specifically, the through hole 171 and the second rotating connection hole 162 are coaxially arranged. Of course, in other embodiments, the through hole 171 and the second rotating connection hole 162 can be slightly offset, but it must be ensured that the insulating post 180 can pass through the through hole 171 and the second rotating connection hole 162 in sequence.

[0051] The insulating post 180 is rotatably inserted through the first rotating connection hole 152, the through hole 171 and the second rotating connection hole 162 in sequence to rotatably connect the first bipolar pliers 150 and the second bipolar pliers 160.

[0052] Specifically, the insulating post 180 is a ceramic pin. Of course, in other embodiments, the insulating post 180 can also be a columnar structure made of materials such as glass or mica, or the insulating post 180 can also be a columnar structure with an insulating layer on the surface of a high-strength metal part.

[0053] The aforementioned bipolar pliers structure 100 features a jaw insulating sleeve 170 that insulates the contact point between the first bipolar pliers 150 and the second bipolar pliers 160. The jaw insulating sleeve 170 also insulates the area between the first bipolar pliers 150 and the end of the outer tube 130, achieving complete enclosure and isolation of the second bipolar pliers 160, significantly improving the insulation effect between the first bipolar pliers 150 and the second bipolar pliers 160. Furthermore, the insulating post 180, while ensuring a rotatable connection between the first bipolar pliers 150 and the second bipolar pliers 160, prevents electrical conductivity at the rotatable connection point, further guaranteeing the insulation effect between the first bipolar pliers 150 and the second bipolar pliers 160. Furthermore, the insulating sleeve 120 provides insulation between the outer tube 130 and the clamp base 110 to prevent the current from the terminal 140 from being conducted sequentially through the outer tube 130 and the clamp base 110 to the first bipolar clamp head 150, thus preventing electrode failure, leakage, creepage, or other adverse phenomena. Therefore, the aforementioned bipolar clamp head structure 100 has excellent insulation performance and is not prone to electrode failure or leakage creepage even when exposed to liquids during use, resulting in very high safety in use.

[0054] In some embodiments, the second bipolar jaw 160 and the jaw insulating sleeve 170 are integrally injection molded. The jaw insulating sleeve 170 can be injection molded from materials such as plastic or rubber. The portion of the second bipolar jaw 160 with the second rotating connection hole 162 is pre-placed in the mold before integral injection molding. That is, the jaw insulating sleeve 170 and the second bipolar jaw 160 are combined through injection molding, forming a strong clamping force between them. They are not easily separated under impact, thus improving the structural stability of the bipolar jaw structure 100. At the same time, the injection molding speed is fast, allowing the jaw insulating sleeve 170 to be directly molded onto the second bipolar jaw 160 without the need for assembly between the jaw insulating sleeve 170 and the second bipolar jaw 160, shortening the manufacturing cycle of the bipolar jaw structure 100 and reducing labor costs.

[0055] Please refer to it again. Figures 6 to 8 Furthermore, in some embodiments, annular grooves 163 are provided circumferentially at the inner wall edges of both ends of the second rotating connection hole 162. The inner ring of the jaw insulating sleeve 170 located at the edge of the through hole 171 is injection molded and embedded in the annular groove 163.

[0056] Thus, during the injection molding process of the jaw insulating sleeve 170, insulating material needs to be injected into the annular groove 163 to form an inner ring by utilizing the inner wall edge portion formed at both ends of the through hole 171, which further improves the connection stability of the jaw insulating sleeve 170 on the second bipolar jaw head 160 and further improves the structural stability of the bipolar jaw head structure 100.

[0057] Please refer to it again. Figure 1 and Figure 5 In some embodiments, one end of the first bipolar jaw 150 has two spaced-apart support end plates 153 along a first direction 10. Each support end plate 153 has a first rotatable connection point 151 and a first rotatable connection hole 152. Along the first direction 10, the two first rotatable connection points 151 are aligned, and the two first rotatable connection holes 152 are aligned. The two first rotatable connection points 151 are rotatably connected to the first support end 111 and the second support end 112, respectively. The portion of the second bipolar jaw 160 enclosing the jaw insulating sleeve 170 is located between the two support end plates 153. The two ends of the insulating post 180 are rotatably inserted through the two first rotatable connection holes 152, respectively.

[0058] Thus, the rotational connection between the first bipolar jaw 150 and the jaw base 110 achieves two-point support, and the rotational connection between the first bipolar jaw 150 and the second bipolar jaw 160 also achieves two-point support, improving the connection stability and making the bipolar jaw structure 100 more structurally stable. Consequently, the opening and closing operation between the first bipolar jaw 150 and the second bipolar jaw 160 in the bipolar jaw structure 100 is more stable and precise.

[0059] Please refer to it again. Figure 6 and Figure 8 Furthermore, in some embodiments, mounting grooves 172 are formed on both sides of the jaw insulating sleeve 170. The two mounting grooves 172 are arranged opposite to each other along the first direction 10. That is, the openings of the two mounting grooves 172 are both outward. A through hole 171 is provided in each mounting groove 172. Two support end plates 153 are respectively located in the two mounting grooves 172. In the first direction 10, the width of the jaw insulating sleeve 170 near the outer tube 130 is greater than the outer diameter of the outer tube 130, and the width of the jaw insulating sleeve 170 away from the outer tube 130 is greater than or equal to the outer distance between the first support end 111 and the second support end 112.

[0060] Thus, the installation slot 172 not only ensures the insulation between the first bipolar jaw 150 and the second bipolar jaw 160 in the first direction 10, but also shortens the width of the first bipolar jaw 150 in the first direction 10, making the structure more compact and facilitating the reduction of the volume of the bipolar jaw structure 100. Simultaneously, the installation slot 172 forms insulating partition structures at both ends of the jaw insulating sleeve 170, providing complete insulation between the jaw portion of the second bipolar jaw 160 and the two support end plates 153, and between the jaw portion of the second bipolar jaw 160 and the first support end 111 and the second support end 112, respectively. It also provides complete insulation between the end of the outer tube 130 and the two support end plates 153, further improving the insulation reliability of the bipolar jaw structure 100 and enhancing its safety in use.

[0061] Please refer to it again. Figure 1 and Figure 2 Furthermore, in some embodiments, the two first rotatable connection points 151 are rotatably connected to the first support end 111 and the second support end 112 respectively via a pivot 190. A clearance notch 173 is formed at the end of the jaw insulating sleeve 170 away from the outer tube 130 facing the pivot 190. The pivot 190 is located within the clearance notch 173.

[0062] Please refer to it again. Figure 3 Specifically, the inner sides of the first support end 111 and the second support end 112 are respectively provided with a first rotating hole 1111 and a second rotating hole 1121. The support end plate 153 is provided with a rotating through hole serving as a first rotating connection point 151. The rotating shaft 190 passes through the first rotating hole 1111, the two rotating through holes, and the second rotating hole 1121 in sequence, realizing the rotating connection between the first bipolar clamp head 150 and the first support end 111 and the second support end 112. The first rotating hole 1111 and the second rotating hole 1121 can be through holes, one of them can be a blind hole, or both can be blind holes.

[0063] The notch 173 not only ensures complete insulation between the pivot 190 and the second bipolar clamp head 160, but also ensures that the pivot 190 can move smoothly during the opening and closing of the first bipolar clamp head 150 and the second bipolar clamp head 160, thus ensuring the smooth opening and closing of the first bipolar clamp head 150 and the second bipolar clamp head 160, and also helps to reduce the size of the bipolar clamp head.

[0064] Of course, in other embodiments, the two rotatable connection points can also be rotatably connected to the first support end 111 and the second support end 112 respectively through two link structures.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bipolar clamp head structure, characterized in that, include: The plier head base is a hollow tubular structure with openings at both ends; one end of the plier head base has a first support end and a second support end that are opposite to each other and spaced apart along a first direction; An insulating spacer is inserted at the end of the pliers base away from the first support end; The outer tube is inserted at one end and fixed inside the insulating sleeve; The connector is slidably inserted into the outer tube; one end of the connector has a rotatable mounting point; The first bipolar pliers head has a first rotating connection point and a first rotating connection hole at one end; the first bipolar pliers head extends into the pliers head base, and the first rotating connection point is rotatably connected to the first support end and the second support end respectively; The second bipolar pliers head has a second rotating connection point and a second rotating connection hole at one end; one end of the first bipolar pliers head extends into the pliers head base; the second rotating connection point rotates with the rotating mounting point. A jaw insulating sleeve is wrapped around one end of the second bipolar jaw that has the second rotating connection hole, and a through hole communicating with the second rotating connection hole is formed. An insulating post is rotatably inserted sequentially through the first rotating connection hole, the through hole, and the second rotating connection hole to rotatably connect the first bipolar pliers and the second bipolar pliers. The jaw insulating sleeve is configured to isolate between the first bipolar jaw and the second bipolar jaw, and between the first bipolar jaw and the end of the outer tube.

2. The bipolar clamp head structure according to claim 1, characterized in that, The second bipolar clamp head and the clamp jaw insulating sleeve are integrally injection molded.

3. The bipolar clamp head structure according to claim 2, characterized in that, The inner wall edges at both ends of the second rotating connection hole are provided with annular grooves along the circumference; the inner ring of the jaw insulating sleeve located at the edge of the through hole is injection molded and embedded in the annular groove.

4. The bipolar clamp head structure according to claim 1, characterized in that, One end of the first bipolar clamp head has two spaced-apart support end plates along the first direction; each support end plate has a first rotating connection point and a first rotating connection hole; in the first direction, the two first rotating connection points are aligned, and the two first rotating connection holes are aligned; the two first rotating connection points are rotatably connected to the first support end and the second support end, respectively; the portion of the second bipolar clamp head that wraps around the clamp jaw insulating sleeve is located between the two support end plates; the two ends of the insulating post are rotatably inserted through the two first rotating connection holes, respectively.

5. The bipolar clamp head structure according to claim 4, characterized in that, The jaw insulating sleeve has mounting grooves on both sides; the two mounting grooves are arranged opposite each other along the first direction; each mounting groove has a through hole; the two support end plates are respectively located in the two mounting grooves; in the first direction, the width of the jaw insulating sleeve near the outer tube is greater than the outer diameter of the outer tube, and the width of the jaw insulating sleeve away from the outer tube is greater than or equal to the outer distance between the first support end and the second support end.

6. The bipolar clamp head structure according to claim 5, characterized in that, The two first rotating connection points are respectively rotatably connected to the first support end and the second support end via a rotating shaft; The jaw insulating sleeve has a clearance notch at the end away from the outer tube and facing the rotating shaft; the rotating shaft is located within the clearance notch.

7. The bipolar clamp head structure according to claim 1, characterized in that, The through hole is coaxially arranged with the second rotating connection hole.

8. The bipolar clamp head structure according to claim 1, characterized in that, The insulating post is a ceramic pin.

9. The bipolar clamp head structure according to claim 1, characterized in that, The outer tube is a PTFE tube.

10. A bipolar medical device, characterized in that, Includes the bipolar clamp structure as described in any one of claims 1 to 9.

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