CN114224475A

CN114224475A - Surgical clamp, surgical clamp head and control method of clamp head

Info

Publication number: CN114224475A
Application number: CN202111425219.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Yibaiwan Medical Technology Shanghai Co ltd
Current assignee: Yibaiwan Medical Technology Shanghai Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-03-25

Abstract

The invention discloses a surgical clamp, a surgical clamp head and a control method of the clamp head, wherein the surgical clamp head comprises: the first clamping arm comprises a first clamping arm main body and a first electrode, and the first clamping arm main body is provided with a first clamping surface; the second clamping arm comprises a second clamping arm main body and a second electrode, and the second clamping arm main body is provided with a second clamping surface; when the first clamping arm and the second clamping arm are clamped, the head end of the second electrode is abutted against the first clamping face, a conductive gap is formed between the first clamping face and the second clamping face, a preset distance is reserved between the first electrode and the second electrode, and the first electrode and the second electrode are suitable for being conducted through tissues in the conductive gap. The electrocoagulation and electrotomy functions are integrated, the number of electrodes for electrocoagulation and electrotomy is reduced, the working head of the instrument is miniaturized on the premise of ensuring the electrocoagulation and electrotomy performance, the clinical fine separation is further facilitated, and the clinical application range is expanded.

Description

Surgical clamp, surgical clamp head and control method of clamp head

Technical Field

The invention relates to the field of surgical clamps, in particular to a surgical clamp, a surgical clamp head and a control method of the clamp head.

Background

Electrosurgical tools include monopolar electrosurgical tools, bipolar electrosurgical tools, harmonic tools, laser tools, ultrasonic tools, and the like, in a variety of forms of energy. In laparoscopic minimally invasive surgery and general development surgery, tissues/vessels in the patient's body must be closed and severed. To perform such a procedure, a bipolar or monopolar clamp can be introduced through the trocar to engage the target tissue. Electrical energy (such as radio frequency energy) is delivered to the clamp to cauterize the engaged tissue.

The electrical energy delivery may be performed before, during, and/or after tissue shearing. The delivered electrical energy generates heat that is capable of treating tissue. For example, the heat may cauterize tissue or coagulate blood in order to minimize bleeding during the treatment procedure. Electrosurgical tools may use high frequency Alternating Current (AC), such as Radio Frequency (RF) energy, to provide the heat required for cauterization or coagulation. High frequency RF energy is preferred to minimize muscle contraction and electrocution. Monopolar devices are typically used with a negative plate, wherein one electrode of the electrosurgical generator is mounted to the instrument and the other electrode is mounted to the negative plate. The current in the monopolar device travels from the instrument through the patient's body to the negative plate.

Bipolar instruments are typically connected to two electrodes of an electrosurgical generator. The current flow in a bipolar device is typically limited to tissue near the working tip of the bipolar instrument, thereby reducing the risk of damaging non-target tissue.

More specifically, the bipolar forceps/double-click forceps used in minimally invasive endoscopic surgery transmit appropriate energy to the clamped tissue by controlling the intensity, frequency and interval of the released electrical energy by using the combined action of mechanical forceps and electrical energy, thereby completing electrocautery, electrocoagulation, tissue dehydration and hemostasis and bleeding reduction.

Still further, a considerable variety of surgical procedures require not only simple electrocautery tissue, but also "closure/sealing" of tissue, blood vessels, and various types of vascular bundles, depending on the amount of pressure and electrical energy applied to the jaws, and the jaw gap distance. More particularly, vascular closure or tissue closure techniques utilize unique radio frequency energy, jaw pressure, and precisely controlled distance between the jaws as they close to effect fusing and closing of tissue held by the jaws. Vessel/tissue closure is distinguished from "coagulation," which is the process of tissue destruction by heat (also known as "electric roasting" or "electrocautery") which is the process of tissue dehydration by the destruction and desiccation of tissue cells. The former is to change the tissue into a fused integral structure which significantly reduces the interface between different tissues by dissolving collagen and elastin in the tissue and the intercellular tissue.

Currently, the electrode combination for vessel closure and tissue fusion, and the electrode combination for electrotomy, are not, or are not completely, the same set of electrode combinations, which are operated independently, and the whole system requires two sets of multiple electrode assemblies. The structure is overstaffed, the miniaturization of the working head of the device is not facilitated, the clinical fine separation is not convenient, and the clinical application range is limited. The existing design is complex, the manufacturing cost is high, and the clinical disinfection and sterilization are not facilitated.

Disclosure of Invention

In view of the above technical problems, an object of the present invention is to provide a surgical clip, a surgical clip head and a method for controlling the surgical clip head, which integrate the electrocoagulation function and the electrotomy function, reduce the number of electrodes for electrocoagulation and electrotomy, miniaturize the working head of the instrument on the premise of ensuring the electrocoagulation and electrotomy performance, further facilitate the clinical fine separation, and expand the clinical application range.

In order to achieve the above object, the present invention provides a surgical clip head comprising:

the first clamping arm comprises a first clamping arm main body and a first electrode, the first clamping arm main body is provided with a first clamping surface, the first electrode is installed on the first clamping arm main body, and the head end of the first electrode protrudes out of the first clamping surface;

the second clamping arm comprises a second clamping arm main body and a second electrode, the second clamping arm main body is provided with a second clamping surface, the second electrode is installed on the second clamping arm main body, and the head end of the second electrode protrudes out of the second clamping surface;

when the first clamping arm and the second clamping arm are clamped, the head end of the second electrode is abutted against the first clamping face, a conductive gap is formed between the first clamping face and the second clamping face, a preset distance is reserved between the first electrode and the second electrode, and the first electrode and the second electrode are suitable for being conducted through tissues in the conductive gap.

Preferably, when the first clamping arm and the second clamping arm are clamped, the head end of the second electrode abuts against the first clamping surface, and the head end of the first electrode abuts against the second clamping surface.

Preferably, the first clamp arm includes two first electrodes disposed on the first clamp arm main body, and the two first electrodes are disposed at a predetermined distance, and the tip of the second electrode is located between the two first electrodes, and two conductive gaps are formed on two sides of the second electrode.

Preferably, the first clamp arm further comprises a connector disposed in the first clamp arm body, and two ends of the connector are electrically connected to the two first electrodes, respectively.

Preferably, the first clamping arm further comprises a third electrode, the third electrode is mounted to the first clamping arm body and protrudes from the first clamping surface, and the third electrode abuts against the second electrode when the first clamping arm and the second clamping arm are clamped.

Preferably, during a cutting operation, a potential is applied to the second electrode and a different potential is applied to the third electrode to effect a cut in tissue that has been closed between the first and second clamp arms.

Preferably, the tips of the first electrode, the second electrode and the third electrode are provided with chamfers.

Preferably, a junction between the first clamping surface of the first clamp arm main body and the first electrode, a junction between the first clamping surface of the first clamp arm main body and the third electrode, and a junction between the second clamping surface of the second clamp arm main body and the second electrode are all provided with chamfers, so as to increase the contact area between the electrodes and the conductive gap.

According to another aspect of the present invention, the present invention further provides a surgical clamping head comprising:

the first clamping arm comprises a first clamping arm main body and two electrodes, the first clamping arm main body is provided with a first clamping surface, the two electrodes are respectively installed on the first clamping arm main body, the head ends of the two electrodes respectively protrude out of the first clamping surface, and a certain gap is formed between the head ends of the two electrodes;

a second clamp arm comprising a second clamp arm body having a second clamping face;

when the first clamping arm and the second clamping arm are clamped, the head end of at least one electrode is abutted to the second clamping surface, a conductive gap is formed between the first clamping surface and the second clamping surface, and the two electrodes of the first clamping arm are suitable for being conducted through tissues in the conductive gap.

Preferably, the first clamping arm further comprises an intermediate electrode, the intermediate electrode is mounted on the first clamping arm main body, a head end of the intermediate electrode protrudes from the first clamping surface, the head end of the intermediate electrode is located between head ends of the two electrodes, and the conductive gaps are respectively formed between the intermediate electrode and the two electrodes.

According to another aspect of the invention, the invention further provides a surgical clamp comprising:

the surgical clamping head of any one of the above;

the control body is mounted on the surgical clamping head, and the opening and closing of the surgical clamping head can be controlled through the control body.

According to another aspect of the present invention, there is further provided a method of controlling a surgical clamping head, comprising:

applying oscillating current with preset potential difference to two electrodes at two sides of a conductive gap of the clamp head in a first time period;

controlling the potential difference between the two electrodes on both sides of the conductive gap to be zero in a second time period after the first time period;

and controlling to alternately electrify according to the electrifying method of the first time period and the electrifying method of the second time period in a period of time.

Preferably, the ratio of the time lengths of the first time period and the second time period is less than a preset value, and the preset value is less than 1.

Compared with the prior art, the surgical clip head and the control method of the clip head provided by the invention have at least one of the following beneficial effects:

1. the surgical operation clamp, the surgical operation clamp head and the control method of the clamp head provided by the invention integrate the electrocoagulation function and the electrotomy function, reduce the number of electrodes for electrocoagulation and electrotomy, miniaturize the working head of the instrument on the premise of ensuring the electrocoagulation and electrotomy performance, further facilitate clinical fine separation and expand the clinical application range;

2. according to the surgical clamp, the surgical clamp head and the control method of the clamp head, provided by the invention, the chamfer angle is arranged at the joint between the electrode and the clamping surface of the surgical clamp head, so that the exposed area of the electrode can be increased;

3. according to the surgical clamp, the surgical clamp head and the control method of the clamp head, provided by the invention, the head ends of the electrodes of the surgical clamp head are respectively provided with the chamfers, so that mechanical damage to tissues of a patient in the using process can be reduced;

4. according to the surgical clamp, the surgical clamp head and the control method of the clamp head, provided by the invention, one of the first clamp arm and the second clamp arm is not provided with an electrode, so that an operator can poke tissues of a patient to a proper position in the operation process, and the operator can conveniently carry out closing, cutting or observation operation.

Drawings

The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in connection with the accompanying drawings.

FIGS. 1a and 1b are diagrammatic cross-sectional views of a surgical clamping jaw head in accordance with a first preferred embodiment of the present invention;

FIGS. 2a and 2b are schematic cross-sectional views of a surgical clamping jaw according to a second preferred embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a surgical clamping jaw according to a third preferred embodiment of the present invention;

figures 4a, 4b, 4c and 4d are schematic cross-sectional views of a surgical clamping head according to a fourth preferred embodiment of the present invention;

FIGS. 5a, 5b, 5c, 5d, 5e, 5f, 5g and 5h are schematic cross-sectional views of a surgical clamping head according to a fifth preferred embodiment of the present invention;

figures 6a, 6b, 6c and 6d are schematic cross-sectional views of a surgical clamping head according to a sixth preferred embodiment of the present invention;

figures 7a, 7b and 7c are schematic cross-sectional views of a surgical clamping head according to a seventh preferred embodiment of the present invention;

FIG. 8 is a perspective view of a surgical clamp of the preferred embodiment of the present invention;

FIG. 9 is a flow chart of a method of controlling a surgical clamping jaw according to a preferred embodiment of the present invention;

FIG. 10 is a schematic illustration of the electrical energy characteristics of the control method of the surgical clamping head of the preferred embodiment of the present invention during the closing phase;

figure 11 is a schematic view of the electrical energy characteristics of the control method of the surgical clamping head of the preferred embodiment of the present invention at the cutting stage.

The reference numbers illustrate:

the surgical clamping head 100, the first clamping arm 1, the first clamping arm main body 11, the first clamping surface 111, the first electrode 12, the connecting body 13, the conductive gap 10, the third electrode 14, the second clamping arm 2, the second clamping arm main body 21, the second clamping surface 211, the second electrode 22 and the control body 201.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will illustrate specific embodiments of the present invention with reference to the drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this context, "a" does not only mean "only one" but may also mean "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

Example 1

Referring to fig. 1a to 7c of the specification, the surgical clip head 100 provided by the present invention is illustrated, and the surgical clip head 100 integrates electrocoagulation (including blood vessel and tissue closure) and electrotomy functions, so as to reduce the number of electrodes required for electrocoagulation and electrotomy, miniaturize the surgical clip head 100 on the premise of ensuring electrocoagulation and electrotomy performance, further facilitate clinical fine separation, and expand clinical application range.

Referring to the description of figure 1a, a first preferred embodiment of a surgical clamping jaw 100 provided by the present invention is illustrated. Specifically, the surgical clamping head 100 includes a first clamping arm 1 and a second clamping arm 2. The first clamp arm 1 comprises a first clamp arm body 11 and a first electrode 12. The first clamp arm body 11 has a first clamping surface 111, the first electrode 12 is mounted on the first clamp arm body 11, and a tip end of the first electrode 12 protrudes from the first clamping surface 111.

The second clamp arm 2 includes a second clamp arm body 21 and a second electrode 22. The second clamp arm body 21 has a second clamping surface 211, the second electrode 22 is mounted on the second clamp arm body 21, and a tip end of the second electrode 22 protrudes from the second clamping surface 211.

When the first clamping arm 1 and the second clamping arm 2 are clamped, the head end of the second electrode 22 abuts against the first clamping surface 111, a conductive gap 10 is formed between the first clamping surface 111 and the second clamping surface 211, and a preset distance is reserved between the first electrode 12 and the second electrode 22, and the first electrode 12 and the second electrode 22 are suitable for conducting through the tissue in the conductive gap 10.

The surgical clamping head provided by the present invention is applicable to a scene including, but not limited to, general open surgery, laparoscopic and/or thoracoscopic assisted small incision minimally invasive surgery, and robot assisted minimally invasive surgery, etc., and the specific type of the applicable specific surgical operation should not constitute a limitation of the present invention.

Preferably, the second electrode 22 is disposed at a central position of the second clamp arm body 21, and the first electrode 12 is disposed at a non-central position of the first clamp arm body 11. When the first clamp arm 1 and the second clamp arm 2 are folded and clamped with each other, the second electrode 22 abuts against the middle position of the first clamp body 11, and a certain gap is formed between the first electrode 12 and the second electrode 22 to form the conductive gap 10.

In use, the first electrode 12 and the second electrode 22 are connected to an electrosurgical energy generator, respectively, with currents of opposite polarity being applied so that current flows in the conductive gap 10 between the first electrode 12 and the second electrode 22 and through tissue between the first electrode 12 and the second electrode 22.

Preferably, the first and second

clamp arm bodies

11 and 21 are made of an insulating material, such as but not limited to medical silicone, medical resin, and medical ceramics.

Referring to fig. 1b of the specification, a modified embodiment of the surgical clamping jaw 100 of the first preferred embodiment is illustrated. Alternatively, when the first clamping arm 1 and the second clamping arm 2 are overlapped and clamped with each other, the first electrode 12 abuts against the second clamping surface 211 of the second clamping arm body 21, and the second electrode 22 abuts against the first clamping surface 111 of the first clamping arm body 11. In the present modified embodiment, as long as the first electrode 12 and the second electrode 22 have a certain gap after the first clamp arm 1 and the second clamp arm 2 are clamped in an overlapping manner, the positions of the first electrode 12 and the second electrode 22 mounted on the first clamp arm body 11 and the second clamp arm body 21 should not be construed as limiting the present invention.

Referring to fig. 1b of the specification, the first electrode 12 is given a negative potential and the second electrode 22 is given a positive potential. Optionally, the first electrode 12 is given a positive potential and the second electrode 22 is given a negative potential.

Example 2

Referring to fig. 2a and 2b of the specification, a second preferred embodiment of the surgical clamping head provided by the present invention is illustrated, and further, the first clamping arm 1 includes two first electrodes 12 disposed on the first clamping arm body 11, and the two first electrodes 12 are disposed at a predetermined distance from each other. When the first and

second clamp arms

1 and 2 are clamped to each other, the head end of the second electrode 22 is located between the two first electrodes 12, and two conductive gaps 10 are formed on both sides of the second electrode 22. In other words, the tip of the second electrode 22 is located between the two first electrodes 12, and there is a certain gap between the second electrode 22 and the two first electrodes 12, respectively, so as to form two conductive gaps 10, respectively. Preferably, the second electrode 22 is located at the center of a connecting line between two first electrodes 12.

In the preferred embodiment, two of the first electrodes 12 may be operated simultaneously, as shown in fig. 2 a. The two first electrodes 12 can also be operated independently, wherein one electrode is involved in the circuit energy release and the other electrode is not involved in the circuit energy release, as shown in fig. 2 b.

Example 3

Referring to fig. 3 of the drawings, a third preferred embodiment of a surgical clamping jaw provided in accordance with the present invention is illustrated. The difference from the second preferred embodiment described above is that: further, the first clamp arm 1 further includes a connecting body 13 disposed in the first clamp arm main body 11. Both ends of the connecting body 13 are electrically connected to the two first electrodes 12, respectively. The two ends of the connecting body 13 are respectively connected to the two first electrodes 12, so that the two first electrodes 12 can be simultaneously powered by one electrosurgical energy generator. Preferably, the connecting body 13 and the two first electrodes 12 are respectively integrally connected, and the connecting body 13 is embedded in the first clamp arm body 11.

Preferably, the second electrode 22 is wrapped around the second clamp arm body 21, and the second electrode 22 is arranged along the center line of the second clamp arm 2 for closing and cutting severed tissue, and the second electrode 22 extends in the direction opposite to the second clamp arm 1 and abuts against the first clamping face 111 of the second clamp arm 1 when the first clamp arm 1 and the second clamp arm 2 are closed, so as to form the conductive gap 10 between the first clamp arm 1 and the second clamp arm 2. The two first electrodes 12 on the first clamp arm 1 are provided separately, and the two first electrodes 12 are arranged on both sides thereof in parallel to the second electrode 22.

Referring to fig. 3 of the specification, in the closing operation, the second electrode 22 is applied with one electric potential, and the two first electrodes 12 are applied with different electric potentials, so that the closing operation of the tissue clamped between the first clamp arm 1 and the second clamp arm 2 is completed. During the cutting operation, the second electrode 22 is similarly applied with one electric potential, and the first electrode 12 is applied with a different electric potential, so that the cutting operation of the closed tissue is completed.

It should be noted that the first and second

clamp arm bodies

11 and 21 may be made of an insulating material or a conductive material. Whether insulating or conductive, the first electrode 12 and the second electrode 22 are not used as an electrical energy transmission component during the triggered release of energy for tissue/vessel closure and detachment, but merely provide a holding and supporting effect on the treated tissue/vessel.

Example 4

Referring to the description of figures 4a, 4b, 4c and 4d, a fourth preferred embodiment of the surgical clamping jaw provided by the present invention is illustrated. The difference from the third preferred embodiment described above is that: the first clamping arm 1 further comprises a third electrode 14. The third electrode 14 is attached to the first clamp arm body 11, the third electrode 14 protrudes from the first clamping surface 111, and the third electrode 14 abuts against the second electrode 22 when the first clamp arm 1 and the second clamp arm 2 are clamped. The third electrode 14 is disposed in the first clamp arm body 11, and the third electrode 14 is disposed at a distance from each of the two first electrodes 12.

In the preferred embodiment, the second electrode 22 is located at the center of the second clamp arm body 21 and is disposed along the central axis of the second clamp arm body 21, the third electrode 14 is located at the center of the first clamp arm body 11 and is disposed along the central axis of the first clamp arm body 11, and the second electrodes 22 are abutted against each other when the first clamp arm 1 and the second clamp arm 2 are clamped, so that the conductive gap 10 is formed between the first clamp arm body 11 and the second clamp arm body 21.

Referring to fig. 4a of the specification, in the closing operation, one electric potential is applied to the second electrode 22 and the third electrode 14, and different electric potentials are applied to the two first electrodes 12, so that the closing operation of the tissue clamped between the first clamping arm 710 and the second clamping arm 720 is completed. During a cutting operation, an electrical potential is applied to the second electrode 22 and a different electrical potential is applied to the third electrode 14 to complete the cutting operation on the closed tissue.

Referring to fig. 4c and 4d of the specification, in other energisation schemes, in a closed operation one of the second electrode 22 and the third electrode 14 is given an electrical potential and the other of the two first electrodes 12 is given an electrical potential, forming a current loop between the second electrode 22/the third electrode 14 and the two first electrodes 12.

Example 5

Referring to the description of figures 5a, 5b, 5c, 5d, 5e, 5f, 5g and 5h, a fifth preferred embodiment of a surgical clamping jaw provided by the present invention is illustrated. In addition to the second preferred embodiment, the third electrode 14 is additionally provided to the first clamp arm body 11, and the third electrode 14 and the two first electrodes 12 are provided separately and at an interval. In the preferred embodiment, the two first electrodes 12 and the three third electrodes 14 provided on the first clamp arm body 11 may be energized simultaneously or may be energized separately.

Referring to fig. 5a of the specification, the second electrode 22 and the third electrode 14 are respectively given the same potential, and the two first electrodes 12 of the first clamp arm 1 are respectively given opposite potentials. Referring to fig. 5b of the specification, the second electrode 22 and the third electrode 14 are respectively given the same electric potential, and one of the first electrodes 12 in the first clamp arm body 11 is given an opposite electric potential. Referring to the description of fig. 5c and 5d, the third electrode 14 is given an electrical potential and one or more of the two electrodes 12 is given an opposite electrical potential. Referring to fig. 5e of the specification, the second electrode 22 is given one potential and the two first electrodes 12 are given opposite potentials. Referring to fig. 5f of the specification, the second electrode 22 is given one potential and one of the two first electrodes 12 is given an opposite potential. Referring to fig. 5g of the specification, the two first electrodes 12 provided in the first clamp arm body 11 are applied with opposite potentials, respectively. Referring to fig. 5h of the specification, the second electrode 22 and the third electrode 14 are applied with opposite potentials to complete the cutting operation of the closed assembly.

Further, the head ends of the first electrode 12, the second electrode 22 and the third electrode 14 are all provided with chamfers to reduce mechanical damage to the patient's tissue when the electrodes are in contact with the patient's tissue.

Example 6

Referring to figures 6a, 6b, 6c and 6d of the specification, a sixth preferred embodiment of a surgical clamping jaw head provided by the present invention is illustrated. The joint between the first clamping surface 111 of the first clamp arm body 11 and the first electrode 12, the joint between the third electrode 14, and the joint between the second clamping surface 211 of the second clamp arm body 21 and the second electrode 22 are chamfered to increase the contact area between the electrodes and the conductive gap 10. Preferably, the chamfer at the junction of the electrode and the clamping surface may be either a circular arc chamfer or a beveled chamfer, and the specific type of chamfer should not be construed as limiting the invention.

Example 7

Referring to figures 7a, 7b and 7c of the specification, a fourth preferred embodiment of a surgical clamping jaw head according to the present invention is illustrated. The difference from the first preferred embodiment is that the two first electrodes 12 are respectively mounted on the first clamp arm body 11, the head ends of the two first electrodes 12 respectively protrude from the first clamping surface 111, and a certain gap is formed between the head ends of the two first electrodes 12. The second clamp arm body 21 is not provided with an electrode. When the first clamping arm 1 and the second clamping arm 2 are clamped, the head end of at least one first electrode 12 abuts against the second clamping surface 211, the conductive gap 10 is formed between the first clamping surface 111 and the second clamping surface 211, and the two first electrodes of the first clamping arm 1 are suitable for being conducted through the tissue in the conductive gap 10.

In the preferred embodiment, the second clamping arm 2 is not provided with an electrode, i.e. the second clamping arm 2 is not energized. During use, an operator can use the second clamp arm 2 to poke tissue to a suitable position with confidence to better perform the closing and/or cutting, viewing, etc. operation requirements.

Example 8

Referring to fig. 8 of the specification, the present invention further provides a surgical clip, according to another aspect of the present invention, comprising: a surgical clamping jaw 100 according to any of the above embodiments and a control body 201, the surgical clamping jaw being mounted to the control body 201, the opening and closing of the surgical clamping jaw being controllable by the control body 201. It should be noted that the surgical clamp can be either a manually operated surgical clamp device or a robotic surgical clamp device, and the particular type of surgical clamp device should not be construed as limiting the invention.

Example 9

101: applying oscillating current with a preset potential difference to two electrodes on two sides of a conductive gap of the clamp head in a first time period;

102: controlling the potential difference between the two electrodes at two sides of the conductive gap to be zero in a second time period after the first time period;

103: and controlling to alternately electrify according to the electrifying method of the first time period and the electrifying method of the second time period in a period of time.

Preferably, the ratio of the time lengths of the first time period and the second time period is smaller than a preset value and smaller than 1.

Illustratively, with reference to fig. 10 of the specification, during the closing (coagulation), an oscillating current in the form of d is applied between the two poles during the first time period a, said oscillating current being in the form of, but not limited to, oscillating variations of sine, cosine, step square wave, triangular wave, etc. The potential difference between the two poles is controlled to be zero during the second period c. The sum of the first period a and the second period b is one energy cycle b. The ratio of the time between the first period a and one energy cycle b is preferably less than 0.5, but can also be greater than or equal to 0.5 when the electrical impedance properties of the tissue of the bipolar device meet certain necessary characteristics. In the process, the frequency range of the alternating electric energy is between 100kHz and 500 kHz.

By way of example, with reference to the description of fig. 11, during the cutting process, during the first period e, an oscillating current in the form of h is applied between the two poles, said oscillating current being in the form of, but not limited to, an oscillating variation of sine, cosine, step square wave, triangular wave, etc. The potential difference between the two poles is controlled to be zero during the second period f. The sum of the first time period e and the second time period f is one energy period g. The duty cycle t (e)/t (f) is determined according to the electrical impedance characteristics of the tissue between the two poles, generally t (a)/t (b) < 0.3. In the process, the frequency range of the alternating electric energy is between 100kHz and 500 kHz. Preferably, the potential difference h during cutting is greater than the potential difference d during closing.

In summary, the electric energy strategy of coagulation and cutting is a sequential combination of the above two stages, the jump between the stages is based on the impedance characteristic of the tissue between the two electrodes, when the impedance characteristic meets a certain condition, the energy strategy jumps from the coagulation stage to the cutting stage, or jumps from the cutting stage to the coagulation stage, and the steps are repeated until the tissue between the two electrodes is completely coagulated and separated.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A surgical clamping jaw, comprising:

2. The surgical clamping jaw of claim 1, wherein when said first clamping arm and said second clamping arm are clamped, said head end of said second electrode abuts said first clamping surface and said head end of said first electrode abuts said second clamping surface.

3. The surgical clamping jaw head of claim 1, wherein said first clamping arm includes two said first electrodes disposed on said first clamping arm body and spaced apart a predetermined distance, said second electrode having a tip disposed between said two first electrodes and forming two conductive gaps on either side of said second electrode.

4. The surgical clamping jaw head according to claim 3, wherein said first clamping arm further comprises a connecting body disposed within said first clamping arm body, said connecting body having opposite ends electrically connected to said two first electrodes, respectively.

5. The surgical clamping jaw head of claim 3 or 4, wherein said first clamping arm further comprises a third electrode mounted to said first clamping arm body and protruding from said first clamping surface, said third electrode abutting said second electrode when said first and second clamping arms are clamped.

6. The surgical clamp head of claim 5, wherein during a cutting operation, one potential is applied to said second electrode and a different potential is applied to said third electrode to effect a cut in tissue that has been closed between said first and second clamp arms.

7. The surgical clamping jaw of claim 5, wherein the tips of said first, second and third electrodes are each provided with a chamfer.

8. The surgical clamping jaw head of claim 7, wherein a junction of said first clamping surface of said first clamping arm body and said first electrode, a junction of said third electrode, and a junction of said second clamping surface of said second clamping arm body and said second electrode are chamfered to increase a contact area between an electrode and said conductive gap.

9. A surgical clamping jaw, comprising:

the first clamping arm comprises a first clamping arm main body and two electrodes, the first clamping arm main body is provided with a first clamping surface, the two electrodes are respectively arranged on the first clamping arm main body, the head ends of the two electrodes respectively protrude out of the first clamping surface, and a certain gap is formed between the head ends of the two electrodes;

when the first clamping arm and the second clamping arm are clamped, the head end of at least one electrode abuts against the second clamping surface, a conductive gap is formed between the first clamping surface and the second clamping surface, and the two electrodes of the first clamping arm are suitable for being conducted through tissues in the conductive gap.

10. A surgical clamp, comprising:

the surgical clamping jaw head of any one of claims 1-9;

11. A method of controlling a surgical clamping head, comprising:

12. The method of controlling a surgical clamping jaw according to claim 11, wherein a ratio of a length of time of said first period of time to a length of time of said second period of time is less than a predetermined value, said predetermined value being less than 1.