A surgical dissector
By designing an electrocoagulation forceps surgical dissection with an insulating layer and electrode sheet, the problems of 'mushroom effect' and tissue fragment adhesion in electrosurgery are solved, and the effect of reducing thermal damage and preventing adhesion is achieved.
Patent Information
- Application Number
- CN202421073440.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Existing electrocoagulation tweezers are prone to cause the ‘mushroom effect’ during electrosurgical surgery, that is, the heat generated by arc discharge spreads to surrounding tissues, causing irreparable damage, and tissue fragments on the tip of the tweezers are prone to stick.
A surgical dissection device is designed, including a first forceps, a second forceps, a cup cylinder, a first electrode sheet and a second electrode sheet. The forceps are coated with an insulating layer and a first electrode sheet and a second electrode sheet are arranged at the distal end of the forceps so that the arc is mainly concentrated between the electrode sheets and reduce heat diffusion.
It effectively reduces the arc area outside the tweezer tip during electrocoagulation, reduces the electrical damage to the surrounding tissue by the "mushroom effect", and avoids adhesion of tissue fragments to the tweezer forceps.
Smart Images
Figure CN222708378U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a surgical dissector. Background Art
[0002] In electrosurgery, electrocoagulation forceps cut and coagulate human tissues through electrode discharge. During the arc discharge process, a large amount of heat is generated and diffused to the surrounding tissues of the surgical site. If the heat is too high, it will cause irreparable damage to the surrounding tissues. This is the "thermal damage" effect in the field of electrosurgery. During the use of existing electrocoagulation forceps, when the tweezers on both sides act on human tissues, the current is not only directly transmitted from the relative inner surfaces of the tweezers on both sides, but also transmitted in an arc shape from the surrounding tissues along the outer surface. This part of the energy will also generate heat when flowing through the tissue, causing thermal damage. This phenomenon is called the "mushroom effect" in foreign literature. In addition, the heat generated by the tweezers tips during use makes it easy for body tissue fragments to stick to the tweezers tips. Utility Model Content
[0003] In view of the above analysis, the embodiments of the present utility model aim to provide a surgical dissector to solve one or more of the above problems existing in the prior art.
[0004] The purpose of the utility model is achieved in this way:
[0005] A surgical dissector, comprising:
[0006] First forceps;
[0007] A second tweezers, symmetrical with the first tweezers about a mirror plane;
[0008] A cup barrel, the proximal ends of the first tweezers and the second tweezers are both connected to the cup barrel and insulated by the cup barrel;
[0009] A first electrode sheet connected to the distal end of the first forceps;
[0010] A second electrode sheet connected to the distal end of the second tweezers; and
[0011] an insulating layer covering the outer sides of the first tweezers and the second tweezers, wherein the proximal ends of the first tweezers and the second tweezers are exposed from the insulating layer, and the surface of the first tweezers in contact with the first electrode sheet and the surface of the second tweezers in contact with the second electrode sheet are exposed from the insulating layer;
[0012] Among them, the first electrode sheet and the second electrode sheet are both located between the first tweezers and the second tweezers, the projection of the first electrode sheet on the mirror plane is located within the projection of the first tweezers on the mirror plane, and the projection of the second electrode sheet on the mirror plane is located within the projection of the second tweezers on the mirror plane; along the direction perpendicular to the mirror plane, the thickness of the first electrode sheet and the second electrode sheet is 0.3 mm.
[0013] Furthermore, it also includes a first wire and a second wire, and the first wire and the second wire are connected to the first tweezers and the second tweezers respectively.
[0014] Furthermore, a first wire hole and a second wire hole are provided on the cup tube, one end of the first wire passes through the first wire hole to be connected to the proximal end of the first forceps, and one end of the second wire passes through the second wire hole to be connected to the proximal end of the second forceps.
[0015] Furthermore, the distal end of the first tweezers has a first boss portion protruding toward the second tweezers, and the first electrode sheet is connected to an end of the first boss portion adjacent to the second tweezers; the distal end of the second tweezers has a second boss portion protruding toward the first tweezers, and the second electrode sheet is connected to an end of the second boss portion adjacent to the first tweezers.
[0016] Furthermore, along a direction perpendicular to the mirror plane, the thickness of the first boss portion and the second boss portion is 0.3-0.5 mm.
[0017] Furthermore, the first tweezers and the second tweezers are both provided with anti-slip edges.
[0018] Furthermore, the first forceps include a first section, a second section and a third section from the proximal end to the distal end, the first section is parallel to the third section, and the angle between the second section and the first section is 130 to 140 degrees.
[0019] Furthermore, the third section gradually tapers from the proximal end to the distal end.
[0020] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:
[0021] The surgical dissector provided by the utility model effectively reduces the arc area outside the forceps tip during electrocoagulation, prevents heat from diffusing to the surroundings, and makes the temperature mainly concentrated on the tissue between the first electrode sheet and the second electrode sheet, thereby reducing the electrical damage to the surrounding tissues caused by the "mushroom effect" and avoiding the adhesion of tissue fragments to the forceps. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0023] Figure 1 A stereoscopic diagram of the surgical dissector provided by the utility model;
[0024] Figure 2 for Figure 1 A partial enlarged view at point I in the middle;
[0025] Figure 3 A front view of the surgical dissector provided by the utility model;
[0026] Figure 4 A right side view of the surgical dissector provided by the utility model;
[0027] Figure 5 for Figure 4 A partial enlarged view of the distal end of the first forceps;
[0028] Figure 6 yes Figure 4 A partial enlarged view of the distal end of the second forceps;
[0029] Figure 7 yes Figure 4 Sectional view along line AA;
[0030] Figure 8 yes Figure 7 A partial enlarged view of the middle II;
[0031] Fig. 9 and Fig.10 It is a three-dimensional diagram of a cup cartridge provided by an embodiment of the utility model;
[0032] Fig.11 It is a cross-sectional view of the cup tube provided by the utility model;
[0033] Fig.12 It is a front view of the proximal end of the first forceps provided by the utility model.
[0034] Reference numerals:
[0035] 1. First tweezers; 11. First section; 111. Round hole; 12. Second section; 13. Third section; 14. First boss portion; 2. Second tweezers; 21. Second boss portion; 3. Cup tube; 31. Sink; 32. First wire hole; 33. Second wire hole; 4. First electrode sheet; 5. Second electrode sheet; 6. First wire; 7. Second wire; 8. Anti-slip edge; 9. Round hole. DETAILED DESCRIPTION
[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments disclosed in this disclosure can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0037] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.
[0038] Example 1
[0039] It should be noted that the “proximal end” involved in the present invention refers to the end closer to the operator, and the “distal end” refers to the end farther from the operator.
[0040] A specific embodiment of the utility model is as follows Figure 1-12 As shown, a surgical dissector is disclosed, comprising: a first forceps 1, a second forceps 2, a cup tube 3, a first electrode sheet 4 and a second electrode sheet 5; the second forceps 2 and the first forceps 1 are symmetrical about a mirror plane; the proximal ends of the first forceps 1 and the second forceps 2 are both connected to the cup tube 3 and insulated by the cup tube 3; the first electrode sheet 4 is connected to the distal end of the first forceps 1; the second electrode sheet 5 is connected to the distal end of the second forceps 2; the first electrode sheet 4 and the second electrode sheet 5 are both located between the first forceps 1 and the second forceps 2, the projection of the first electrode sheet 4 on the mirror plane is located within the projection of the first forceps 1 on the mirror plane, and the projection of the second electrode sheet 5 on the mirror plane is located within the projection of the second forceps 2 on the mirror plane.
[0041] See also Figure 4 As shown, Figure 4The section along the AA line in the figure coincides with the aforementioned mirror plane, and the second forceps 2 and the first forceps 1 are symmetrical about the mirror plane. The cup tube 3 can be made of a flexible insulating material such as rubber, and two interval-set sink grooves 31 are arranged on the cup tube 3. The first forceps 1 and the second forceps 2 are respectively inserted into the two sink grooves 31. After the first forceps 1 and the second forceps 2 are inserted into the corresponding sink grooves 31, the distal end of the first forceps 1 and the distal end of the second forceps 2 are separated by a certain distance, and the distance between the distal end of the first forceps 1 and the distal end of the second forceps 2 is greater than the distance between the proximal end of the first forceps 1 and the proximal end of the second forceps 2. The first forceps 1 and the second forceps 2 are both made of aluminum or other biocompatible metal materials, and the first electrode sheet 4 and the second electrode sheet 5 are both made of rose gold. The first electrode sheet 4 and the second electrode sheet 5 are respectively attached to the distal end of the first forceps 1 and the distal end of the second forceps 2, and the first electrode sheet 4 and the first forceps 1 are conductive, and the second electrode sheet 5 and the second forceps 2 are conductive.
[0042] The projection of the first electrode sheet 4 on the mirror plane and the projection of the first forceps 1 on the mirror plane can be seen in Figure 8 As shown, the first electrode sheet 4 and the second electrode sheet 5 cannot be seen in the front and rear directions. When in use, the arrangement of the first electrode sheet 4 on the first forceps 1 can effectively prevent the heat from diffusing to the front side, and the arrangement of the second electrode sheet 5 on the second forceps 2 can effectively prevent the heat from diffusing to the rear side, so that the heat is mainly concentrated on the tissue between the first electrode sheet 4 and the second electrode sheet 5, reducing the electrical damage to the surrounding tissues caused by the "mushroom effect".
[0043] The aforementioned rose gold, also known as red gold or pink gold, is a metal material made of a mixture of gold and copper alloy. Rose gold is harder than pure gold, which makes it more wear-resistant and scratch-resistant during manufacturing. The hardness and ductility of rose gold can be controlled by adjusting the composition ratio to meet different manufacturing requirements.
[0044] In the utility model, the first electrode sheet 4 and the second electrode sheet 5 respectively arranged at the tips of the first forceps 1 and the second forceps 2 have good biocompatibility and excellent oxidation resistance, and are not easy to adhere to tissue fragments. In addition, during the use of the utility model, the arc generated at the far end is located between the first electrode sheet 4 and the second electrode sheet 5, so the heat is mainly concentrated between the first electrode sheet 4 and the second electrode sheet 5, and the far ends of the first forceps 1 and the second forceps 2 have a relatively low temperature, so it is also possible to prevent tissue fragments from adhering to the first forceps 1 and the second forceps 2. The first electrode sheet 4 and the second electrode sheet 5 are centrally attached to the inner sides of the first forceps 1 and the second forceps 2, and the first electrode sheet 4 and the second electrode sheet 5 are also easier to separate from the forceps after use, thereby reducing the difficulty of recovering the precious metals used in the surgical dissector.
[0045] In some embodiments, the surgical dissector further comprises a first wire 6 and a second wire 7, wherein the first wire 6 and the second wire 7 are connected to the first forceps 1 and the second forceps 2, respectively. Fig.12 As shown, in order to facilitate the connection of the wires with the forceps, a round hole 9 is provided on the proximal ends of the first forceps 1 and the second forceps 2, and the first wire 6 passes through the round hole 9 on the first forceps 1 to be tied to the first forceps 1, and the second wire 7 passes through the round hole 9 on the second forceps 2 to be tied to the second forceps 2. This embodiment is intended to provide convenience for doctors, and the first wire 6 and the second wire 7 are pre-connected to the first forceps 1 and the second forceps 2.
[0046] In some embodiments, the cup tube 3 is provided with a first wire hole 32 and a second wire hole 33, one end of the first wire 6 passes through the first wire hole 32 to connect with the proximal end of the first forceps 1, and one end of the second wire 7 passes through the second wire hole 33 to connect with the proximal end of the second forceps 2. Fig. 9 and Fig.10 As shown, the wire hole and the sink 31 are respectively located on the upper and lower end surfaces of the cup barrel 3, and the first wire hole 32 and the second wire hole 33 are respectively connected to the corresponding sink 31. By passing the wire through the cup barrel 3, the interference of the wire to the doctor during use can be reduced. Moreover, since the cup barrel 3 is made of rubber material and has a certain elastic deformation ability, it can extend the service life of the wire to a certain extent and prevent the wire from being easily broken.
[0047] In some embodiments, the distal end of the first tweezers 1 has a first boss portion 14 protruding toward the second tweezers 2, and the first electrode sheet 4 is connected to one end of the first boss portion 14 adjacent to the second tweezers 2; the distal end of the second tweezers 2 has a second boss portion 21 protruding toward the first tweezers 1, and the second electrode sheet 5 is connected to one end of the second boss portion 21 adjacent to the first tweezers 1. Along the direction perpendicular to the mirror plane, the thickness D1 of the first boss portion 14 and the second boss portion 21 is 0.3 to 0.5 mm. In a preferred embodiment, the thickness D1 of the first boss portion 14 and the second boss portion 21 is 0.4 mm. The provision of the first boss portion 14 and the second boss portion 21 not only facilitates clamping, but also increases the thickness of the distal end of the tweezers, which can further prevent the heat generated at the positions of the first electrode sheet 4 and the second electrode sheet 5 from diffusing to the surroundings, and better prevent lateral thermal damage.
[0048] In some embodiments, along the direction perpendicular to the mirror plane, the thickness D2 of the first electrode sheet 4 and the second electrode sheet 5 is 0.3 mm. When manufacturing the surgical dissector, the "mushroom effect" can be reduced by 50% by controlling the thickness of the first electrode sheet 4 and the second electrode sheet 5 to about 0.3 mm.
[0049] In some embodiments, the surgical dissector further includes an insulating layer (not shown) covering the outside of the first forceps 1 and the second forceps 2, the proximal ends of the first forceps 1 and the second forceps 2 are exposed from the insulating layer so that the wire can be electrically conductive with the forceps, the surface of the first forceps 1 that is in contact with the first electrode sheet 4 is exposed from the insulating layer so that the first electrode sheet 4 and the first forceps 1 are electrically conductive, and the surface of the second forceps 2 that is in contact with the second electrode sheet 5 is exposed from the insulating layer so that the second electrode sheet 5 and the second forceps 2 are electrically conductive. The aforementioned insulating layer can be made of a high temperature resistant, biocompatible and insulating material. The insulating layer is made of a high temperature resistant insulating material and can be coated on the first forceps 1 and the second forceps 2 by spraying or other processes, and the thickness of the insulating layer is 0.1 to 0.3 mm.
[0050] like Figure 3 As shown, the first forceps 1 includes a first section 11, a second section 12 and a third section 13 from the proximal end to the distal end. The first section 11 is parallel to the third section 13, and the angle between the second section 12 and the first section 11 is 130 to 140 degrees. Such a structural design is conducive to the doctor's more comfortable grip. In a preferred embodiment, the angle between the second section 12 and the first section 11 is 135 degrees. The third section 13 gradually tapers from the proximal end to the distal end, so that the distal end of the third section 13 has a smaller size to improve the accuracy of the operation. In order to improve the stability of the medical staff's grip, the first forceps 1 and the second forceps 2 are provided with an anti-slip structure, such as an anti-slip edge 8 or an anti-slip embossing, such as Figure 3 As shown, the anti-slip edge 8 is arranged at the connection position between the first section 11 and the second section 12 .
[0051] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A surgical dissector, characterized in that: include: First forceps; A second tweezers, symmetrical with the first tweezers about a mirror plane; A cup barrel, the proximal ends of the first tweezers and the second tweezers are both connected to the cup barrel and insulated by the cup barrel; A first electrode sheet connected to the distal end of the first forceps; A second electrode sheet connected to the distal end of the second tweezers; as well as an insulating layer covering the outer sides of the first tweezers and the second tweezers, wherein the proximal ends of the first tweezers and the second tweezers are exposed from the insulating layer, and the surface of the first tweezers in contact with the first electrode sheet and the surface of the second tweezers in contact with the second electrode sheet are exposed from the insulating layer; Among them, the first electrode sheet and the second electrode sheet are both located between the first tweezers and the second tweezers, the projection of the first electrode sheet on the mirror plane is located within the projection of the first tweezers on the mirror plane, and the projection of the second electrode sheet on the mirror plane is located within the projection of the second tweezers on the mirror plane; along the direction perpendicular to the mirror plane, the thickness of the first electrode sheet and the second electrode sheet is 0.3 mm.
2. The surgical dissector according to claim 1, characterized in that: It also includes a first wire and a second wire, wherein the first wire and the second wire are connected to the first tweezers and the second tweezers respectively.
3. The surgical dissector according to claim 2, characterized in that: The cup tube is provided with a first wire hole and a second wire hole, one end of the first wire passes through the first wire hole to be connected to the proximal end of the first forceps, and one end of the second wire passes through the second wire hole to be connected to the proximal end of the second forceps.
4. The surgical dissector according to claim 1, characterized in that: The distal end of the first tweezers has a first boss portion protruding toward the second tweezers, and the first electrode sheet is connected to an end of the first boss portion adjacent to the second tweezers; the distal end of the second tweezers has a second boss portion protruding toward the first tweezers, and the second electrode sheet is connected to an end of the second boss portion adjacent to the first tweezers.
5. The surgical dissector according to claim 4, characterized in that: Along a direction perpendicular to the mirror plane, the thickness of the first boss portion and the second boss portion is 0.3-0.5 mm.
6. The surgical dissector according to claim 1, characterized in that: The first tweezers and the second tweezers are both provided with anti-slip edges.
7. The surgical dissector according to claim 1, characterized in that: The first forceps include a first section, a second section and a third section from the proximal end to the distal end, the first section is parallel to the third section, and the angle between the second section and the first section is 130-140 degrees.
8. The surgical dissector according to claim 7, characterized in that: The third section tapers gradually from the proximal end to the distal end.