A flap dissection dissector

Abstract

The present application relates to the technical field of medical apparatus and instruments, and discloses a skin flap separation dissector, which comprises a working end head, an electrotome head body and an electrotome connecting part connected in sequence from front to back, all of which are made of conductive material, the electrotome head body is coated with an insulating shell, the front end of the insulating shell is a stepped surface, and the working end head is eccentrically arranged on the stepped surface. The skin flap separation dissector can form a bulge under the skin when the tool is inserted, so that the separated skin flap has a proper and uniform thickness, and the skin flap can be safely and quickly separated, especially suitable for non-complete direct vision skin flap separation. The skin flap separation dissector has a good guiding effect on junior breast surgeons who have not fully mastered the use of traditional electrotomes and have not rich experience, so that the junior breast surgeons can avoid damaging the skin flap while mastering the operation feeling, reduce the occurrence of postoperative skin flap blood supply deficiency and uneven thickness affecting the appearance, and has the advantages of simple and reliable structure, easy operation, good operation effect and easy popularization.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a flap separation dissection device. Background Technology

[0002] Surgical electrosurgical units are among the most frequently used medical instruments by surgeons. During surgery, the surgeon typically holds the electrosurgical tip at an angle to the cutting plane. For less experienced surgeons, lacking sufficient surgical experience and skill in manipulating the electrosurgical tip, using traditional surgical electrosurgical units can easily lead to poor control over the depth of tissue cutting. This is especially true in breast surgery when separating skin flaps, often resulting in uneven flap thickness or even flap perforation, ultimately affecting flap healing. Particularly in situations where visualization is limited, the uniform separation of the skin flap using a conventional electrosurgical unit is even more difficult to control. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention provides an anatomical instrument that enables the surgeon to separate skin flaps with uniform thickness and is convenient and easy to master; it is also particularly suitable for skin flap separation under non-complete direct vision conditions.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A skin flap separation dissection device includes a working end, an electrosurgical head body, and an electrosurgical connecting part connected sequentially from front to back. All three are made of conductive material. The electrosurgical head body is covered with an insulating shell. The front end of the insulating shell has a stepped surface, and the working end is eccentrically positioned on the stepped surface. The stepped surface at the end of the insulating shell near the working end creates a bulge under the skin, which facilitates judgment of the incision progress even without complete direct vision. This ensures that the dissected skin flap has a uniform thickness and is easy to operate. The working end is not positioned in the center of the stepped surface but rather eccentrically, which facilitates smooth incision of the dissection device and allows for better control of the skin flap thickness.

[0005] Preferably, the stepped surface is formed by at least one straight bottom edge and one rounded top edge. The straight bottom edge facilitates smooth insertion of the dissecting instrument, while the rounded top edge forms an arc-shaped bulge under the skin during insertion, effectively controlling the thickness of the skin flap without damaging the remaining normal tissue.

[0006] Preferably, the stepped surface is formed by a straight bottom edge and a semi-circular top edge. The subcutaneous bulge of the semi-circular top edge is more pronounced.

[0007] Preferably, the working tip is a thin sheet or a needle shape. The length direction of the working tip is perpendicular to the step surface, and the thickness direction of the working tip is close to the straight bottom edge of the step surface. The midline of the working tip along its length direction is equidistant from the two ends of the straight bottom edge of the step surface. The working tip can be an existing cylindrical shape, but a thin sheet or needle shape is preferred here. The thin sheet shape is relatively thin and wide, so the skin tissue to be burned is relatively thin and wide when moving left and right, which is conducive to the separation of skin flaps and reduces damage to normal tissue. The needle shape is convenient for burning little by little. The working tip being perpendicular to the step surface, centered left and right, and close to the straight bottom edge all help to form a clear arc-shaped ridge under the skin, and to ensure smooth incision and minimize damage to the remaining tissue.

[0008] Preferably, the working tip is 3-5 mm long, the distance between the highest point of the arc-shaped top edge and the working tip is 3-5 mm, and the distance between the midline of the working tip along its length and the two ends of the straight bottom edge of the stepped surface is 6-10 mm. This structure and size of the working tip are suitable for clinical flap separation, especially for flap separation in breast surgery.

[0009] Preferably, the tip of the working end is arc-shaped. This facilitates cutting and reduces damage.

[0010] Preferably, the working tip is a thin sheet with a width of 0.1-2.0 mm and a thickness of 0.1 mm-1.0 mm. If the working tip is needle-shaped, existing needle-shaped cutting tips can be used.

[0011] Preferably, the insulating shell includes a first insulating part and a second insulating part connected sequentially from front to back. The longitudinal sections of the first insulating part have the same shape as the stepped surface, and the distance between the highest point of the arc-shaped top edge and the straight bottom edge of each longitudinal section gradually decreases from front to back. The shape and size of the second insulating part can be the same as existing insulating shells. The first insulating part gradually decreases in size from front to back to facilitate a smooth connection with the second insulating part.

[0012] Preferably, the first insulating part is made of a high-temperature resistant material. It is heat-resistant and shape-stable during surgery.

[0013] Preferably, the first insulating part includes a detachable sleeve. The front end of the detachable sleeve has a stepped surface with an eccentric through hole along its length. A socket groove is formed at the rear of the lower end face of the detachable sleeve, through which the working end protrudes. The detachable sleeve is fitted onto a general-purpose electric knife insulating shell. Fitting the detachable sleeve onto commonly used electric knife tips enhances applicability and reduces costs.

[0014] This invention discloses a flap separation dissecting device that creates a subcutaneous bulge during incision, ensuring that the separated flaps are of appropriate and uniform thickness. It allows for safe and rapid flap separation, and is particularly suitable for flap separation under non-direct vision. It provides excellent guidance for junior breast surgeons who are not yet fully proficient in using traditional electrocautery, enabling them to develop a good operating feel while avoiding damage to the flap. This reduces the occurrence of poor blood supply and uneven thickness of the flap after surgery, which can affect the appearance. It has the advantages of simple and reliable structure, easy operation, good surgical results, and easy promotion. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0016] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0017] Figure 3 for Figure 1 A schematic diagram of the structure of the middle step surface.

[0018] Figure 4 This is a schematic diagram of the first half of the structure of Embodiment 2 of the present invention.

[0019] Figure 5 This is a schematic diagram of the stepped surface in Embodiment 3 of the present invention.

[0020] Figure 6 This is a schematic diagram of the detachable sleeve structure in Embodiment 4 of the present invention.

[0021] Figure 7 for Figure 6 A schematic diagram of the front end.

[0022] Figure 8 for Figure 7 BB cross-sectional view.

[0023] In the figure: 1. Working end 1; 2. Electric knife head body; 3. Electric knife connection part; 4. Insulating shell; 5. Stepped surface; 6. Bottom edge; 7. Top edge; 8. Knife tip; 9. First insulating part; 10. Second insulating part; 11. Side; 12. Eccentric through hole; 13. Socket groove; 14. Detachable sleeve. Detailed Implementation

[0024] The following is combined Figure 1-5 The present invention will be further described with reference to specific embodiments.

[0025] Example 1 A flap dissection dissection device, such as Figure 1 , 2As shown, it includes a working end 1, an electric knife head body 2, and an electric knife connection part 3 connected from front to back. All three are made of conductive materials. The electric knife head body 2 is covered with an insulating shell 4. The front end of the insulating shell 4 is a stepped surface 5. The working end 1 is eccentrically set on the stepped surface 5.

[0026] As attached Figure 3 As shown, the stepped surface 5 is formed by a straight bottom edge 6 and a semi-circular top edge 7.

[0027] The working end 1 is a flat strip shape. The length direction of the working end 1 is perpendicular to the step surface 5. The thickness direction of the working end 1 is close to the straight bottom edge 6 of the step surface 5. The working end 1 is equidistant from the centerline along the length direction to the two ends of the straight bottom edge 6 of the step surface 5.

[0028] The working end 1 is 4mm long, the distance between the highest point of the arc top edge 7 and the working end 1 is 5mm, and the distance between the two ends of the straight bottom edge 6 of the step surface 5 along the centerline of the working end 1 along the length direction is 8mm.

[0029] The tip 8 of the working end 1 is arc-shaped. The working end 1 has a width of 1.0 mm and a thickness of 0.5 mm.

[0030] The insulating shell 4 includes a first insulating part 9 and a second insulating part 10 connected sequentially from front to back. The longitudinal sections of the first insulating part 9 have the same shape as the stepped surface 5, and the distance between the highest point of the arc top edge 7 of each longitudinal section and the straight bottom edge 6 gradually decreases from front to back.

[0031] The first insulation part 9 uses a high-temperature resistant material.

[0032] The flap separation dissection device is used as follows: Connect the electrosurgical connection part 3 of the flap separation dissection device to the electrosurgical main unit, and select the appropriate electrosurgical power as needed.

[0033] Based on biopsy pathology, imaging evaluation, and patient wishes, we selected patients with malignant breast tumors who underwent single mastectomy for breast cancer.

[0034] After successful anesthesia, routine disinfection and draping are performed. The skin is then incised with a scalpel blade, and the skin is dissected layer by layer down to the subcutaneous fat layer using other electrosurgical heads or this dissecting instrument.

[0035] The surgeon first uses conventional methods to separate a skin flap of the required thickness of 3-5mm as the starting point. The skin edge is then pulled taut, and the flap dissecting dissector used in this embodiment is inserted. The highest point (point A) of the dissector's semi-circular apex 7 is kept close to the deep surface of the free skin flap. The dissector is controlled to be parallel to the free skin flap, and moved left and right gradually deeper in a "Z" shaped dissection. During the operation, the raised shadow of point A of the flap dissecting dissector is always visible on the skin surface until the dissection reaches the required range for this procedure. If a slightly thicker or thinner flap is desired, a slight downward or upward angle can be added between the flap dissecting dissector and the flap. Angles greater than 45 degrees are prohibited.

[0036] Continue with the subsequent surgical steps.

[0037] Example 2 A flap dissection dissecting device, the rest of which is the same as in Example 1, except that: as shown in the attached... Figure 4 As shown, the working end 1 is needle-shaped.

[0038] Example 3 A flap dissection dissecting device, the rest of which is the same as in Example 1, except that: as shown in the attached... Figure 5 As shown, The stepped surface 5 is formed by a straight bottom edge 6, two straight side edges 11 and a rounded top edge 7.

[0039] Example 4 A flap dissection device, the rest of which is the same as in Embodiment 1, except that: the first insulating part 9 includes a detachable sleeve 14, as shown in the attached... Figure 6 , 7 As shown in Figure 8, the front end of the detachable sleeve 14 has a stepped surface 5, and an eccentric through hole 12 is formed on the stepped surface 5. The eccentric through hole 12 is formed along the length of the detachable sleeve 14. A sleeve groove 13 is formed on the rear part of the lower end face of the detachable sleeve 14. The working end 1 passes through the eccentric hole 12. The detachable sleeve 14 is sleeved on the universal electric knife insulating shell. The universal electric knife insulating shell and the detachable sleeve 14 together constitute the first insulating part 9.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the present application should be within the technical scope of the present invention.

Claims

1. A flap separation dissection device, comprising a working end (1), an electrosurgical head body (2), and an electrosurgical connecting part (3) connected sequentially from front to back, all three being made of conductive materials, and the electrosurgical head body (2) being covered with an insulating shell (4), characterized in that: The front end of the insulating shell (4) is a stepped surface (5). The stepped surface (5) is formed by at least a straight bottom edge (6) and a semi-circular top edge (7). The working end (1) is eccentrically set on the stepped surface (5). The working end (1) is thin sheet or needle-shaped. The length direction of the working end (1) is perpendicular to the stepped surface (5). The thickness direction of the working end (1) is close to the straight bottom edge (6) of the stepped surface (5). The working end (1) is equidistant from the centerline of the length direction to the two ends of the straight bottom edge (6) of the stepped surface (5). The insulating shell (4) includes a first insulating part (9) and a second insulating part (10) connected sequentially from front to back. Each longitudinal section of the first insulating part (9) has the same shape as the stepped surface (5). The distance between the highest point of the circular top edge of each longitudinal section and the straight bottom edge (6) gradually decreases from front to back.

2. The flap separation dissection device according to claim 1, characterized in that: The length of the working end (1) is 3-5mm, the distance between the highest point of the semi-circular top edge (7) and the working end (1) is 3-5mm, and the distance between the two ends of the straight bottom edge (6) of the step surface (5) along the length direction of the working end (1) is 6-10mm.

3. The flap separation dissection device according to claim 1, characterized in that: The working end (1) is thin-sheet shaped, and its blade tip (8) is arc-shaped.

4. The flap separation dissection device according to claim 1, characterized in that: The working end (1) is a thin sheet with a width of 0.1-2.0 mm and a thickness of 0.1 mm-1.0 mm.

5. The flap separation dissection device according to claim 1, characterized in that: The first insulating part (9) is made of a high-temperature resistant material.

6. The flap separation dissection device according to claim 5, characterized in that: The first insulating part (9) includes a detachable sleeve (14). The front end of the detachable sleeve (14) is a stepped surface (5). An eccentric through hole (12) is opened on the stepped surface (5). The eccentric through hole (12) is opened along the length direction of the detachable sleeve (14). A sleeve groove (13) is opened on the rear part of the lower end face of the detachable sleeve (14). The working end (1) passes through the eccentric through hole (12). The detachable sleeve (14) is sleeved on the general electric knife insulating shell.

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