Radio frequency closed cutting coagulation operating forceps

By using plastic wedges and wedge limit grooves in radiofrequency closed cutting and coagulation surgical forceps to prevent jaw misalignment, and realizing radiofrequency energy transmission through the connection structure of insulating rings and conductive sheets, the problem of poor coagulation and cutting effects caused by jaw misalignment is solved, and the operation accuracy and efficiency of the operation are improved.

CN223336192UActive Publication Date: 2025-09-16WUHAN BBT MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202422404325.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2025-09-16
Estimated Expiration
2034-09-30

AI Technical Summary

Technical Problem

Existing radiofrequency closed cutting surgical forceps are prone to jaw dislocation during operation, resulting in poor coagulation and cutting effects, especially difficulty in operation when operating deep tissues, and low work efficiency.

Method used

A radiofrequency closed cutting and coagulation surgical forceps was designed. A plastic wedge and a wedge limiting groove were set on the head of the forceps to prevent the jaws from being misaligned. The connection structure of the plastic insulating ring and the conductive sheet was used to achieve effective transmission of radiofrequency energy and electrical isolation, ensuring accurate occlusion of the jaws.

Benefits of technology

It effectively prevents jaw dislocation, improves surgical operation accuracy and efficiency, ensures the stability of coagulation and cutting effects, and reduces surgical risks.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a pair of radio frequency closed cutting coagulation operating forceps which comprises a first forceps part and a second forceps part, the middle of the first forceps part is hinged to the middle of the second forceps part, a plastic wedge block is arranged on the side, facing the first forceps part, of the head of the second forceps part, and a wedge block limiting groove is formed in the head of the first forceps part. The tail part of the first clamp part is connected with one end of a hand clasping rod, the other end of the hand clasping rod is provided with a first hand clasping ring, the tail part of the second clamp part is connected with a handle tailstock, and the handle tailstock is provided with a second hand clasping ring. The plastic wedge block is matched with the wedge block limiting groove, so that dislocation can be effectively prevented when the first clamp part and the second clamp part are clamped, and the use efficiency is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a radio frequency closed cutting and coagulation surgical forceps. Background Art

[0002] Coagulation surgical instruments are specifically designed for severing and coagulating blood vessels during surgery, as well as for cutting, grasping, and separating tissue. Currently, coagulation surgical instruments on the market have the following shortcomings: The scissors series of radiofrequency closed cutting surgical instruments all manually activate the jaws to complete the coagulation and cutting process. The working portion of the clamp head is relatively short, and the operating space is small. Furthermore, poor control of force during operation can easily cause the jaws to misalign, resulting in poor coagulation and cutting results. This is especially difficult and inconvenient for deeper tissues that require both coagulation and cutting. Once the jaws are misaligned, the clamp head needs to be repeatedly aligned and calibrated during use, which reduces work efficiency and also affects the coagulation and cutting results. Utility Model Content

[0003] The purpose of the utility model is to provide a radio frequency closed cutting and coagulation surgical forceps to address the above-mentioned problems in the prior art.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A radiofrequency closed cutting and coagulation surgical forceps includes a first jaw part and a second jaw part. The middle part of the first jaw part and the middle part of the second jaw part are hinged. A plastic wedge is provided on the side of the head of the second jaw part facing the first jaw part. The head of the first jaw part is provided with a wedge limiting groove. The tail of the first jaw part is connected to one end of a handle rod, and a first hand ring is provided at the other end of the handle rod. The tail of the second jaw part is connected to the handle tail seat, and a second hand ring is provided on the handle tail seat.

[0006] The plastic wedge includes a square fixing block and a wedge portion arranged on the square fixing block. The wedge portion is adapted to the shape of the wedge limiting groove. A wedge mounting groove is provided on the side of the head of the second jaw portion facing the first jaw portion, and the square fixing block is installed in the wedge mounting groove by interference fit.

[0007] A first hinge hole is provided in the middle of the first jaw part, a second hinge hole is provided in the middle of the second jaw part, one end of the plastic insulating sleeve passes through the second hinge hole, the other end of the plastic insulating sleeve passes through the first hinge hole, a plastic insulating ring is fixed to the middle of the plastic insulating sleeve, a conductive sheet is provided on the side of the plastic insulating ring facing the first jaw part, the other side of the plastic insulating ring is fitted with the inner side of the second jaw part, a washer is provided on the plastic insulating sleeve between the conductive sheet and the first jaw part, the washer is electrically connected to the conductive sheet and the inner side of the first jaw part respectively, a conductive lead connected to the radio frequency generator in the tail stock of the handle is welded on the conductive sheet, and the radio frequency generator is also connected to the second jaw part, the internal thread column of the female nail passes through the plastic insulating sleeve from the outside of the second jaw part and is connected to the sub-nail on the outside of the first jaw part, a second plastic washer is provided between the nail head of the female nail and the outer side of the second jaw part, and a first plastic washer is provided between the nail head of the sub-nail and the outer side of the first jaw part.

[0008] A conductive sheet placement ring groove is provided on one side of the plastic insulating ring facing the first clamp portion. The conductive sheet is annular and is arranged in the conductive sheet placement ring groove. The conductive lead is arranged in the wire groove inside the second clamp portion.

[0009] A spring piece is provided on one side of the conductive sheet facing the gasket.

[0010] The thickness of the conductive sheet is smaller than the depth of the annular groove in which the conductive sheet is placed.

[0011] The washer portion is embedded in the conductive sheet placement ring groove, and an outer ring sleeve of the portion of the washer exposed from the conductive sheet placement ring groove is provided with an insulating gasket.

[0012] The insulating gasket covers the hinge between the first jaw part and the second jaw part.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. A plastic wedge is provided at the head of the second jaw, and a wedge limiting groove is provided at the head of the first jaw. During the engagement of the heads of the first and second jaws, the plastic wedge and the wedge limiting groove cooperate to prevent the heads of the first and second jaws from being dislocated during engagement, resulting in a good coagulation effect, allowing the operation to proceed smoothly and greatly reducing surgical risks.

[0015] 2. For the hinged part between the first jaw part and the second jaw part, the conductive sheet is electrically isolated from the second jaw part by a plastic insulating ring, and one of the terminals of the RF interface of the RF generator in the tail stock of the handle is connected to the conductive sheet through a conductive lead. The conductive sheet transmits the RF energy to the first jaw part through the gasket, and the other terminal of the RF interface of the RF generator in the tail stock of the handle is directly connected to the second jaw part, so that the RF signal is loaded on the first jaw part and the second jaw part to achieve a coagulation (or cutting) effect, and the insulating gasket realizes electrical isolation at the hinge of the first jaw part and the second jaw part to prevent the first jaw part and the second jaw part from short-circuiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 Schematic diagram of the front view of the first jaw part;

[0018] Figure 3 2 is a front view of the structure of the second clamp;

[0019] Figure 4 This is a schematic diagram of the installation of the plastic wedge;

[0020] Figure 5 Schematic diagram of the top view of the second jaw part;

[0021] Figure 6 A first structural view of a plastic insulating sleeve and a plastic insulating ring;

[0022] Figure 7 A second structural view of the plastic insulating sleeve and the plastic insulating ring;

[0023] Figure 8 Schematic diagram of the installation of the conductive sheet;

[0024] Figure 9 Schematic diagram of the structure of the conductive sheet;

[0025] Figure 10 The figure is the installation diagram of the gasket;

[0026] Figure 11 Schematic diagram of the cooperation between the plastic wedge and the wedge limit groove;

[0027] Figure 12 This is a schematic diagram of the installation of the insulating gasket;

[0028] Figure 13 Schematic diagram of the location of the insulating gasket.

[0029] In the figure: 1-first clamp, 2-second clamp, 3-plastic wedge, 4-wedge limiting groove, 5-handle lever, 6-first hand ring, 7-handle tailstock, 8-second hand ring, 9-square fixing block, 10-wedge, 11-wedge mounting groove, 12-first hinge hole, 13-second hinge hole, 14-plastic insulating sleeve, 15-female nail, 16-inner thread column, 17-plastic insulating ring, 18-conductive sheet, 19-washer, 20-sub-nail, 21-conductive sheet placement ring groove, 22-spring, 23-insulating gasket, 24-first plastic washer, 25-second plastic washer, 26-wire slot. DETAILED DESCRIPTION

[0030] The following will be combined with the 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, not all of the embodiments. 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.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0033] Example 1:

[0034] Reference Figures 1 to 13 A radiofrequency closed cutting and coagulation surgical forceps comprises a first clamp part 1 and a second clamp part 2, the middle part of the first clamp part 1 and the middle part of the second clamp part 2 are hinged, a plastic wedge 3 is provided on the side of the head of the second clamp part 2 facing the first clamp part 1, and a wedge limiting groove 4 is provided on the head of the first clamp part 1. When the head of the first clamp part 1 and the head of the second clamp part 2 are clamped together, the plastic wedge 3 is inserted into the wedge limiting groove 4 to prevent the head of the first clamp part 1 and the head of the second clamp part 2 from being misaligned when the two are clamped together. The tail of the first clamp part 1 is connected to one end of a hand lever 5, and the other end of the hand lever 5 is provided with a first hand ring 6. The tail of the second clamp part 2 is connected to a handle tail seat 7, and a second hand ring 8 is provided on the handle tail seat 7. When in use, the thumb and index finger can be inserted into the first hand ring 6 and the second hand ring 8 respectively to drive the head of the first clamp part 1 and the head of the second clamp part 2 to clamp or open.

[0035] The plastic wedge 3 includes a square fixing block 9 and a wedge portion 10 disposed on the square fixing block 9. The wedge portion 10 is adapted to the shape of the wedge limiting groove 4. As a preferred embodiment, the cross-section of the wedge limiting groove 4 is an inverted triangular groove. A wedge mounting groove 11 is provided on the side of the head of the second jaw 2 facing the first jaw 1. The square fixing block 9 is installed in the wedge mounting groove 11 with an interference fit, so that the plastic wedge 3 will not loosen when the first jaw 1 and the second jaw 2 are clamped. The plastic wedge 3 and the head of the second jaw 2 can also be fixed using other connection methods.

[0036] A first hinge hole 12 is provided in the middle of the first jaw 1, and a second hinge hole 13 is provided in the middle of the second jaw 2. One end of the plastic insulating sleeve 14 passes through the second hinge hole 13, and the other end of the plastic insulating sleeve 14 passes through the first hinge hole 12. When the internal thread column 16 of the female nail 15 passes through the plastic insulating sleeve 14, the internal thread column 16 of the female nail 15 is insulated from the first hinge hole 12 and the second hinge hole 13. A plastic insulating ring 17 is fixed on the middle of the plastic insulating sleeve 14. A conductive sheet 18 is provided on the side of the plastic insulating ring 17 facing the first jaw 1. The other side of the plastic insulating ring 17 is in contact with the inner side of the second jaw 2. The plastic insulating ring 17 is used to isolate the conductive sheet 18 from the second jaw 2. A washer 19 is provided on the plastic insulating sleeve 14 between the conductive sheet 18 and the first jaw 1. The two sides of the washer 19 are respectively connected to the conductive sheet The sheet 18 is electrically connected to the inside of the first jaw 1, and a conductive lead connected to the radio frequency generator in the handle tailstock 7 is welded on the conductive sheet 18. The radio frequency generator is also connected to the second jaw 2, so that the two terminals of the radio frequency interface of the radio frequency generator are electrically connected to the first jaw 1 and the second jaw 2 respectively. When the head of the first jaw 1 and the head of the second jaw 2 are clamped, the radio frequency pulse between them performs radio frequency closed cutting and coagulation on the clamped parts. The internal threaded column 16 of the female nail 15 passes through the plastic insulating sleeve 14 from the outside of the second jaw 2 and is connected to the sub-nail 20 on the outside of the first jaw 1. The female nail 15 and the sub-nail 20 constitute a female-sub rivet. A second plastic washer 25 is provided between the nail head of the female nail 15 and the outside of the second jaw 2, and a first plastic washer 24 is provided between the nail head of the sub-nail 20 and the outside of the first jaw 1. The first plastic washer 24 implements insulation between the nail head of the sub-nail 20 and the first jaw 1, and the second plastic washer 25 implements insulation between the nail head of the female nail 15 and the second jaw 2.

[0037] A conductive sheet placement ring groove 21 is provided on the side of the plastic insulating ring 17 facing the first clamp part 1. The conductive sheet 18 is annular and is arranged in the conductive sheet placement ring groove 21. A conductive lead is welded on the conductive sheet 18, and the conductive lead is arranged in the wire groove 26 on the inner side of the second clamp part 2.

[0038] A spring piece 22 is provided on one side of the conductive sheet 18 facing the washer 19. The spring piece 22 elastically abuts against the washer 19. Under the elastic force of the spring piece 22, the washer 19 abuts against the first clamp part 1, and the electrical contact is better.

[0039] The thickness of the conductive sheet 18 is smaller than the depth of the conductive sheet placement annular groove 21, so that the conductive sheet 18 is completely embedded in the conductive sheet placement annular groove 21, thereby obtaining better insulation protection.

[0040] The washer 19 is partially embedded in the conductive plate placement ring groove 21, and the outer ring of the washer 19 exposed from the conductive plate placement ring groove 21 is provided with an insulating gasket 23. The insulating gasket 23 covers the hinge of the first jaw part 1 and the second jaw part 2.

[0041] Since the parent-child rivet is insulated relative to the first jaw part 1 and the second jaw part 2, the conductive sheet 18 is completely embedded in the conductive sheet placement ring groove 21, and only the part of the gasket 19 exposed from the conductive sheet placement ring groove 21 is electrically connected to the first jaw part 1. The setting of the insulating gasket 23 ensures that the hinged opening and closing of the first jaw part 1 and the second jaw part 2 will not accidentally short-circuit when they are hinged open and closed.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A radiofrequency closed cutting and coagulation surgical forceps, comprising a first clamp part (1) and a second clamp part (2), characterized in that: The middle part of the first jaw part (1) and the middle part of the second jaw part (2) are hinged, a plastic wedge (3) is provided on the side of the head of the second jaw part (2) facing the first jaw part (1), a wedge limiting groove (4) is provided on the head of the first jaw part (1), the tail of the first jaw part (1) is connected to one end of the buckle rod (5), the other end of the buckle rod (5) is provided with a first buckle ring (6), the tail of the second jaw part (2) is connected to the handle tail seat (7), and the handle tail seat (7) is provided with a second buckle ring (8).

2. The radiofrequency closed cutting and coagulation surgical forceps according to claim 1, characterized in that: The plastic wedge (3) comprises a square fixing block (9) and a wedge portion (10) arranged on the square fixing block (9), the wedge portion (10) being adapted to the shape of the wedge limiting groove (4), a wedge mounting groove (11) being provided on the side of the head of the second jaw (2) facing the first jaw (1), and the square fixing block (9) being installed in the wedge mounting groove (11) by interference fit.

3. The radiofrequency closed cutting and coagulation surgical forceps according to claim 1, characterized in that: A first hinge hole (12) is provided in the middle of the first jaw part (1), a second hinge hole (13) is provided in the middle of the second jaw part (2), one end of the plastic insulating sleeve (14) passes through the second hinge hole (13), and the other end of the plastic insulating sleeve (14) passes through the first hinge hole (12), a plastic insulating ring (17) is fixedly mounted on the middle of the plastic insulating sleeve (14), a conductive sheet (18) is provided on the side of the plastic insulating ring (17) facing the first jaw part (1), the other side of the plastic insulating ring (17) is in contact with the inner side of the second jaw part (2), and a washer is mounted on the plastic insulating sleeve (14) between the conductive sheet (18) and the first jaw part (1). (19), the washers are electrically connected to the conductive sheet (18) and the inner side of the first jaw part (1), respectively, a conductive lead connected to the radio frequency generator in the handle tailstock (7) is welded on the conductive sheet (18), and the radio frequency generator is also connected to the second jaw part (2), the internal thread column (16) of the female nail (15) passes through the plastic insulating sleeve (14) from the outside of the second jaw part (2) and is connected to the sub-nail (20) on the outside of the first jaw part (1), a second plastic washer (25) is provided between the nail head of the female nail (15) and the outer side of the second jaw part (2), and a first plastic washer (24) is provided between the nail head of the sub-nail (20) and the outer side of the first jaw part (1).

4. The radiofrequency closed cutting and coagulation surgical forceps according to claim 3, characterized in that: A conductive sheet placement ring groove (21) is provided on one side of the plastic insulating ring (17) facing the first clamp portion (1); the conductive sheet (18) is annular and is disposed in the conductive sheet placement ring groove (21); and the conductive lead is disposed in a wire groove inside the second clamp portion (2).

5. The radiofrequency closed cutting and coagulation surgical forceps according to claim 4, characterized in that: A spring sheet (22) is provided on one side of the conductive sheet (18) facing the washer (19).

6. The radiofrequency closed cutting and coagulation surgical forceps according to claim 4, characterized in that: The thickness of the conductive sheet (18) is less than the depth of the annular groove (21) in which the conductive sheet is placed.

7. The radiofrequency closed cutting and coagulation surgical forceps according to claim 6, characterized in that: The washer (19) is partially embedded in the conductive sheet placement annular groove (21), and an outer ring sleeve of the portion of the washer (19) exposed from the conductive sheet placement annular groove (21) is provided with an insulating gasket (23).

8. The radiofrequency closed cutting and coagulation surgical forceps according to claim 7, characterized in that: The insulating gasket (23) covers the hinge between the first jaw part (1) and the second jaw part (2).