Multi-bit minimally invasive surgery device and method for keloid trephine resection

Abstract

The invention relates to the technical field of keloid resection, and discloses a multi-bit minimally invasive surgery device for keloid trephine resection, which comprises a handle, and further comprises a rotating disc rotationally mounted at the front end of the handle; the cylinder grooves are annularly and uniformly formed in the rotating disc; a connecting cylinder is movably inserted into each cylinder groove, a ring drill bit is arranged at the first end of each connecting cylinder, and the second end of each connecting cylinder is detachably connected with the inner shaft; the inner shaft is movably and telescopically arranged in the handle and can freely rotate; according to the multi-drill-bit minimally invasive surgery device for keloid trephine resection, the rotating disc is arranged at the front end of the handle, and the multiple barrel grooves are annularly and evenly distributed in the rotating disc to integrate trephine bits with different diameters, so that an operator can rapidly select and switch the matched trephine bits in the same minimally invasive surgery process; therefore, the adaptive capacity of the device to keloids with different sizes and shapes is improved, and the replacement frequency of instruments in an operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of keloid excision technology, specifically to a multi-bit minimally invasive surgical device and method for trephine excision of keloids. Background Technology

[0002] Keloids are abnormal proliferative lesions of fibrous tissue that occur in the dermis of the skin. They commonly appear after trauma, surgery, burns, or inflammation. The lesion tissue can continue to grow and is often accompanied by discomfort such as pain and itching, severely affecting the patient's appearance and quality of life. Due to the characteristics of keloids, such as dense tissue, poor elasticity, and a high recurrence rate, their clinical treatment has always been challenging.

[0003] Currently, the main treatment methods for keloids include drug injection, laser therapy, radiation therapy, and surgical excision. Among these, surgical excision, as a method of directly removing the lesion, is suitable for larger keloids or those that do not respond well to conservative treatment. However, traditional surgical excision usually requires creating a large incision, which not only causes significant damage to the surrounding normal skin tissue but also easily leads to the formation of new linear scars after surgery, affecting aesthetics and increasing the risk of recurrence.

[0004] To reduce surgical trauma, minimally invasive trephine excision is now used clinically to treat keloids. This method uses a trephine drill to remove scar tissue in a columnar shape, offering advantages such as small incisions, rapid healing, and good results. However, current trephine excision techniques still primarily rely on a single-size trephine drill bit, making it difficult to flexibly adapt to keloid lesions of different shapes, sizes, and distributions. For larger or irregular scars, multiple instrument changes or repeated procedures are often required, increasing surgical complexity and operational risks. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a multi-bit minimally invasive surgical device and method for trephine excision of keloids, which has the advantage of being able to easily replace trephine bits of different sizes.

[0006] (II) Technical Solution To achieve the aforementioned goal of conveniently replacing trephine bits of different sizes, the present invention provides the following technical solution: a multi-bit minimally invasive surgical device for trephine excision of keloids, comprising a handle, and further comprising: A rotating disc is mounted on the front end of the handle. Several cylindrical slots are evenly arranged in a ring on the rotating disk; a connecting cylinder is movably inserted into each of the cylindrical slots, the first end of the connecting cylinder has a ring drill bit, and the second end is detachably connected to the inner shaft. The inner shaft is telescopically mounted inside the handle and can rotate freely. By rotating the rotating disk, the connecting cylinders in different slots can be selectively connected to the inner shaft, thereby enabling the same inner shaft to drive and feed trephine bits of different diameters at different surgical stages, so as to achieve stable and controllable trephine excision of keloids of different sizes in the same minimally invasive surgical procedure.

[0007] In this invention, the center of the rotating disk is rotatably mounted on the handle via a rotating shaft.

[0008] Furthermore, in this invention, the end of the trephine bit has a cutting edge.

[0009] In this invention, the second end of the connecting cylinder is provided with a prism groove, and a hollow prism is movably inserted into the prism groove. The hollow prism is fixedly installed at the end of the inner shaft.

[0010] In this invention, the piercing drill bit and the rotating disk are further connected by a magnetic block assembly. The hollow prisms are magnetically connected within the prism slots by a set of magnetic blocks.

[0011] Furthermore, in this invention, a negative pressure suction cavity is formed between the connecting cylinder and the inner shaft; It is also equipped with a flushing tube, which is fixedly installed at the end of the handle and movably inserted into the negative pressure suction cavity.

[0012] In this invention, the outer wall of the inner shaft is further fitted with a drive gear, the drive gear is fixedly mounted on the drive shaft, and the drive shaft is rotatably mounted inside the handle and driven to rotate by a rotary motor.

[0013] In this invention, a rotating sleeve is rotatably mounted on the inner shaft, a slider is fixedly mounted on the rotating sleeve, the slider is screwed onto a lead screw, and the lead screw is rotatably mounted inside the handle and driven to rotate by a telescopic motor.

[0014] Furthermore, in this invention, a limiting rod is movably inserted into the slider, and the limiting rod is fixedly installed inside the handle.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a multi-bit minimally invasive surgical device for trephine excision of keloids, which has the following beneficial effects: 1. This multi-drill minimally invasive surgical device for trephine excision of keloids features a rotating disk at the front end of the handle, with multiple cylindrical grooves evenly distributed in a ring on the disk to integrate trephine bits of different diameters. This allows the surgeon to quickly select and switch the appropriate trephine bit during the same minimally invasive surgical procedure, thereby improving the device's adaptability to keloids of different sizes and shapes and reducing the number of instrument changes during surgery.

[0016] 2. This multi-bit minimally invasive surgical device for trephine excision of keloids establishes selective connections between each trephine bit and the same retractable and rotatable inner shaft via a connecting sleeve. This allows the inner shaft to drive and feed different trephine bits axially at different surgical stages, thereby ensuring the consistency of drive and operational stability during the excision process of multiple trephine bits.

[0017] 3. This multi-drill minimally invasive surgical device for trephine excision creates a through-flow negative pressure suction channel between the connecting cylinder and the inner shaft, and performs negative pressure suction simultaneously during trephine excision. This allows the excised scar tissue to be suctioned out in a timely manner, reducing tissue residue, keeping the surgical area clean, and facilitating subsequent pathological analysis. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the circumferential drill bit of the present invention when it is extended; Figure 4 This is a cross-sectional view of the present invention; Figure 5 This is an enlarged schematic diagram of the rotating disk portion of the present invention.

[0019] In the diagram: 1. Handle; 2. Rotating shaft; 3. Rotating disk; 4. Slot; 5. Connecting cylinder; 6. Ring drill bit; 7. Cutting edge; 8. Negative pressure suction channel; 9. Prism slot; 10. Hollow prism; 11. Inner shaft; 12. Drive gear; 13. Drive shaft; 14. Rotary motor; 15. Rotating sleeve; 16. Slider; 17. Lead screw; 18. Telescopic motor; 19. Limiting rod; 20. Flushing pipe; 21. Magnetic block group one; 22. Magnetic block group two. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0021] Please see Figures 1-5 This invention discloses a multi-bit minimally invasive surgical device for trephine excision of keloids. The main body of the device is a handle 1, as shown in the figure. Figure 2As shown, the center of the rotating disk 3 is rotatably mounted on the handle 1 via the rotating shaft 2. Several cylindrical grooves 4 are evenly arranged in a ring on the rotating disk 3, and a connecting cylinder 5 is movably inserted into each cylindrical groove 4. The first end of the connecting cylinder 5 has a trephine 6, and the end of the trephine 6 has a cutting edge 7. The cutting edge 7 is a ring-shaped blade structure, used for trephine excision of keloid tissue. The second end of the connecting cylinder 5 is detachably connected to the inner shaft 11. In this embodiment, multiple trephine bits 6 have different sizes, preferably different diameters, which facilitates the rapid selection and switching of suitable trephine bits 6 during the same minimally invasive surgery, thereby improving the device's adaptability to keloids of different sizes and shapes and reducing the number of instrument changes during surgery.

[0022] In this invention, the inner shaft 11 is movably telescopically disposed within the handle 1 and can rotate freely. The axial extension and retraction direction of the inner shaft 11 is consistent with the cutting feed direction of the treble drill bit 6. Thus, by rotating the rotating disk 3, the connecting cylinders 5 in different slots 4 can selectively establish connections with the inner shaft 11, thereby enabling the same inner shaft 11 to drive the rotation and feed the treble drill bit 6 of different diameters at different surgical stages, so as to achieve stable and controllable treble drill excision of keloids of different sizes in the same minimally invasive surgical procedure.

[0023] Regarding the connection between the connecting cylinder 5 and the inner shaft 11, specifically, in this invention, a prism groove 9 is provided at the second end of the connecting cylinder 5, and a hollow prism 10 is movably inserted into the prism groove 9. The hollow prism 10 is fixedly installed at the end of the inner shaft 11. Thus, when the hollow prism 10 is inserted into the prism groove 9, the connecting cylinder 5 can rotate together with the inner shaft 11, and the rotational motion of the inner shaft 11 can be transmitted to the ring drill bit 6.

[0024] Furthermore, such as Figure 5 As shown, the circlip drill bit 6 and the rotating disk 3 are magnetically connected by magnetic block group 21 to assist in positioning the circlip drill bit 6 on the rotating disk 3; the hollow prism 10 is magnetically connected in the prism groove 9 by magnetic block group 22, so that the connecting cylinder 5 and the circlip drill bit 6 can move together with the inner shaft 11 and maintain a stable connection during axial feeding. When in use, when the inner shaft 11 is in the retracted state, the rotating disk 3 can be rotated freely to switch the position of the ring drill bit 6. After switching, the inner shaft 11 is extended, and the hollow prism 10 at the end of the inner shaft 11 is inserted into the prism groove 9. After insertion, the inner shaft 11 is extended further, which can extend the entire ring drill bit 6 outward (the connecting cylinder 5 will disengage from the cylinder groove 4), so that the selected ring drill bit 6 enters the working state, thereby facilitating surgical operations.

[0025] In this embodiment, a negative pressure suction cavity 8 is also formed between the connecting cylinder 5 and the inner shaft 11, such as... Figure 4As shown, the flushing tube 20 is fixedly installed at the tail of the handle 1, and its end is movably inserted into the negative pressure suction channel 8. The other end of the flushing tube 20 can be connected to a negative pressure suction device. Thus, through the negative pressure suction that is performed simultaneously during the trephine excision process via the negative pressure suction channel 8, the excised scar tissue can be suctioned out in time, reducing tissue residue, which is beneficial for keeping the surgical area clean and facilitating subsequent pathological analysis.

[0026] like Figure 2 As shown, a drive gear 12 is meshed on the outer wall of the inner shaft 11. The drive gear 12 is fixedly mounted on the drive shaft 13. The drive shaft 13 is rotatably mounted in the handle 1 and is driven to rotate by the rotary motor 14. Thus, the rotary motor 14 is controlled to run. By driving the inner shaft 11 through the drive gear 12, the inner shaft 11 can be made to rotate, thereby driving the ring drill bit 6 to perform ring drilling.

[0027] like Figure 3 As shown, a rotating sleeve 15 is rotatably mounted on the inner shaft 11, and a slider 16 is fixedly mounted on the rotating sleeve 15. The slider 16 is screwed onto the lead screw 17, which is rotatably mounted inside the handle 1 and driven to rotate by the telescopic motor 18. In addition, a limiting rod 19 is movably inserted into the slider 16 and is fixedly mounted inside the handle 1. By driving the lead screw 17 to rotate through the telescopic motor 18, the slider 16 can move along the axial direction of the handle 1. The movement of the slider 16 drives the inner shaft 11 to move through the rotating sleeve 15, thereby realizing the control of the feed stroke of the ring drill bit 6. Example

[0028] This embodiment presents a method for using a multi-bit minimally invasive surgical device for trephine excision, which specifically includes the following steps: Step 1: Based on the size and shape of the keloid, rotate the rotating disk 3 to establish a connection between the trephine bit 6, which matches the size of the target keloid, and the inner shaft 11. Step 2: Align the trephine 6 of the device with the keloid area, ensuring that the trephine 6 is perpendicular to the skin surface. Step 3: Rotate the selected trephine bit 6 by driving the inner shaft 11 to rotate, and perform trephine excision on the keloid under the axial feed action of the inner shaft 11. Step 4: During the trephine excision process, the excised scar tissue is simultaneously aspirated through the negative pressure suction channel 8 formed by the inner shaft 11 and the connecting cylinder 5. Step 5: Once the trephine bit 6 reaches the predetermined excision depth, stop rotating and feeding, withdraw the trephine bit 6, and complete the excision of a single keloid.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-bit minimally invasive surgical device for trephine excision of keloids, comprising a handle (1), characterized in that, Also includes: Rotating disc (3) is rotatably mounted on the front end of handle (1); Several cylindrical grooves (4) are evenly arranged in a ring on the rotating disk (3); a connecting cylinder (5) is movably inserted in each of the cylindrical grooves (4), the first end of the connecting cylinder (5) has a ring drill bit (6), and the second end is detachably connected to the inner shaft (11); The inner shaft (11) is movably telescopically disposed within the handle (1) and can rotate freely; By rotating the rotating disk (3), the connecting cylinders (5) in different slots (4) can be selectively connected to the inner shaft (11), so that the same inner shaft (11) can rotate and feed the trephine (6) of different diameters at different surgical stages, so as to achieve stable and controllable trephine excision of keloids of different sizes in the same minimally invasive surgical procedure.

2. The multi-bit minimally invasive surgical device for trephine excision of keloids according to claim 1, characterized in that: The rotating disk (3) is rotatably mounted on the handle (1) via a rotating shaft (2) at its center.

3. The multi-bit minimally invasive surgical device for trephine excision of keloids according to claim 1, characterized in that: The end of the trephine (6) has a cutting edge (7).

4. The multi-bit minimally invasive surgical device for trephine excision of keloids according to claim 1, characterized in that: The second end of the connecting cylinder (5) is provided with a prism groove (9), and a hollow prism (10) is movably inserted in the prism groove (9). The hollow prism (10) is fixedly installed at the end of the inner shaft (11).

5. A multi-bit minimally invasive surgical device for trephine excision of keloids according to claim 4, characterized in that: The annular drill bit (6) and the rotating disk (3) are magnetically connected by magnetic block assembly (21); The hollow prism (10) is magnetically connected in the prism slot (9) by magnetic block group two (22).

6. A multi-bit minimally invasive surgical device for trephine excision of keloids according to claim 1, 4, or 5, characterized in that: A negative pressure suction cavity (8) is formed between the connecting cylinder (5) and the inner shaft (11). It is also equipped with a flushing tube (20), which is fixedly installed at the tail of the handle (1) and is movably inserted into the negative pressure suction cavity (8).

7. The multi-bit minimally invasive surgical device for trephine excision of keloids according to claim 1, characterized in that: The outer wall of the inner shaft (11) is engaged with a drive gear (12), which is fixedly mounted on the drive shaft (13). The drive shaft (13) is rotatably mounted inside the handle (1) and is driven to rotate by a rotary motor (14).

8. A multi-bit minimally invasive surgical device for trephine excision of keloids according to claim 1 or 7, characterized in that: A rotating sleeve (15) is rotatably mounted on the inner shaft (11), and a slider (16) is fixedly mounted on the rotating sleeve (15). The slider (16) is screwed onto the lead screw (17), and the lead screw (17) is rotatably mounted inside the handle (1) and driven to rotate by the telescopic motor (18).

9. A multi-bit minimally invasive surgical device for trephine excision of keloids according to claim 8, characterized in that: A limiting rod (19) is also movably inserted on the slider (16), and the limiting rod (19) is fixedly installed inside the handle (1).

10. A method of using a multi-bit minimally invasive surgical device for trephine excision of keloids, as described in any one of claims 1-9, characterized in that... Includes the following steps: S1. Based on the size and shape of the keloid, rotate the rotating disk (3) to establish a connection between the trephine bit (6) that matches the size of the target keloid and the inner shaft (11); S2. Align the trephine (6) of the device with the keloid area, so that the trephine (6) is perpendicular to the skin surface and adheres to it. S3. The inner shaft (11) drives the selected trephine bit (6) to rotate, and the trephine is removed under the axial feed action of the inner shaft (11). S4. During the trephine excision process, the excised scar tissue is simultaneously aspirated through the negative pressure suction channel (8) formed by the inner shaft (11) and the connecting tube (5). S5. When the trephine (6) reaches the predetermined excision depth, stop rotating and feeding, and withdraw the trephine (6) to complete the excision of a single keloid.

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