Special trephine assembly for treating femoral head necrosis
The special ring saw assembly with a lifting mechanism and anti-slip features addresses the issue of free movement in existing devices, enabling precise and efficient resection of necrotic femoral head parts.
Patent Information
- Application Number
- CN202420696222.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-07
AI Technical Summary
Existing trepanation devices for treating femoral head necrosis face issues with the ring saw tube moving freely, necessitating precise control during delicate operations, leading to excessive resection if not controlled accurately.
A special ring saw assembly with a support sleeve featuring a lifting mechanism and threaded grooves, a rotating sleeve with anti-slip grooves, and handles with anti-slip strips, allowing controlled movement and enhanced friction for precise resection.
Enables precise and efficient resection of necrotic femoral head parts by controlling the ring saw tube's movement, improving surgical accuracy and efficiency.
Smart Images
Figure CN222195069U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to a special ring saw component for treating femoral head necrosis. Background Art
[0002] Osteonecrosis of the femoral head (ONFH) is a disease caused by local blood supply obstruction of the femoral head due to various reasons, which leads to further ischemia and necrosis of bone cells, trabecular fracture, and collapse of the femoral head. Without effective treatment, collapse will occur within 1-4 years, followed by hip osteoarthritis.
[0003] The existing patent publication number is CN215458377U, which discloses a trepanation device, including a sleeve assembly, a trepanation tube assembly and a guide pin; the sleeve assembly includes a sleeve body, a sleeve handle and a protective plate; the end surface of the bottom end of the sleeve body is provided with a protective plate protruding forward along the tube wall, and the top end of the sleeve body is provided with a sleeve handle; the trepanation tube assembly includes a trepanation tube body, a trepanation handle and trepanation teeth; the trepanation tube body can pass through the sleeve body, the top end of the trepanation body is provided with a trepanation handle, and the bottom end of the trepanation body is provided with trepanation teeth; the guide pin can pass through the trepanation tube body. The above-mentioned trepanation device can conveniently know whether the bone is sawed through during trepanation.
[0004] The existing femoral head necrosis requires the use of a trepanation device to remove the necrotic part of the femoral head, but the existing trepanation device uses a sleeve for removal, and the trepanation tube can move freely up and down inside the sleeve for removal. However, in some delicate removal operations, the up and down movement of the trepanation tube needs to be precisely controlled. If the trepanation tube moves too fast, too many parts will be removed, which will affect the surgical effect. To this end, we propose a special trepanation assembly for the treatment of femoral head necrosis to solve the above-mentioned problems. Utility Model Content
[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.
[0006] Therefore, the purpose of the utility model is to provide a special ring saw assembly for the treatment of femoral head necrosis, which can solve the problem that the existing femoral head necrosis requires the use of a ring saw device to resect the necrotic part of the femoral head, but the existing ring saw device uses a sleeve for resection, and the ring saw tube can move freely up and down inside the sleeve for resection, but in some delicate resection operations, it is necessary to accurately control the up and down movement of the ring saw tube. If the ring saw tube moves too fast, too many parts will be resected, resulting in the problem that the surgical effect is affected.
[0007] In order to solve the above technical problems, the utility model provides a special ring saw assembly for treating femoral head necrosis, which adopts the following technical solution: comprising a support sleeve, wherein the inner cavity of the support sleeve is provided with a thread groove from top to bottom, and the inner cavity of the support sleeve is provided with a lifting mechanism;
[0008] The lifting mechanism comprises a lifting cylinder, the outer surface of which is provided with thread coils from top to bottom, the thread coils are adapted to the thread grooves, and the lifting cylinder is movably connected to the inner thread of the supporting sleeve through the thread coils on the surface.
[0009] Optionally, a rotating sleeve is fixedly mounted on the surface of the lifting cylinder, and a plurality of anti-slip grooves are provided on the circumferential surface of the rotating sleeve at equal angles.
[0010] By adopting the above technical solution, the present solution has a rotating sleeve fixedly installed on the surface of the lifting cylinder, and a plurality of anti-skid grooves are opened on the surface of the rotating sleeve. The doctor can drive the lifting cylinder to move up and down inside the supporting sleeve by rotating the rotating sleeve with his fingers, and the anti-skid grooves can enhance the friction between the fingers.
[0011] Optionally, a ring saw cylinder is inserted into the inner cavity of the lifting cylinder, the interior of the ring saw cylinder is open, and a plurality of saw teeth are fixedly installed at equal angles on the bottom of the ring saw cylinder.
[0012] By adopting the above technical scheme, this scheme inserts a ring saw tube inside the lifting tube, and a plurality of saw teeth are fixedly installed on the bottom of the ring saw tube. The ring saw tube can be used to resect the necrotic part of the patient's femoral head. The doctor can insert the clamp deep into the ring saw tube to facilitate the removal of the necrotic part or perform various surgical operations.
[0013] Optionally, an annular limiting groove is provided in the inner cavity of the lifting cylinder, an annular slide bar is fixedly installed on the outside of the ring saw cylinder, the annular slide bar is adapted to the annular limiting groove, and the annular slide bar is slidably arranged inside the annular limiting groove.
[0014] By adopting the above technical scheme, this scheme opens an annular limiting groove in the inner cavity of the lifting cylinder, and fixes an annular sliding bar on the outside of the ring saw cylinder. The ring saw cylinder can rotate freely inside the lifting cylinder, so that the saw teeth can resect the necrotic part of the patient's femoral head.
[0015] Optionally, two handles are fixedly mounted at equal angles on the circumferential outer wall of the top end of the ring saw cylinder, and both handles are located above the lifting cylinder.
[0016] By adopting the above technical solution, in this solution, two handles are fixedly installed on the top of the ring saw tube, and the doctor can drive the ring saw tube to rotate by turning the handles.
[0017] Optionally, a plurality of anti-slip strips are fixedly installed at equal distances from top to bottom on the front and rear surfaces of the two handles.
[0018] By adopting the above technical solution, in this solution, a plurality of anti-slip strips are fixedly installed on the front and rear sides of the two handles. The doctor can drive the saw teeth to rotate through the two handles, and a plurality of anti-slip strips are arranged on the surface of the handles. The doctor can increase the rotation force of the ring saw tube with the help of the anti-slip strips, thereby facilitating the resection of the necrotic part.
[0019] In summary, the utility model includes at least one of the following beneficial effects: 1. By setting up a lifting mechanism, the doctor can rotate the rotating sleeve on the surface of the lifting cylinder according to the depth of the necrotic part inside the femoral head. The rotation of the rotating sleeve drives the lifting cylinder to rotate, and a threaded coil is provided on the outer surface of the lifting cylinder. The lifting cylinder can rotate inside the supporting sleeve by relying on the threaded coil, thereby adjusting the height of the lifting cylinder on the supporting sleeve. The movement of the lifting cylinder can also drive the position of the ring saw cylinder, so that the ring saw cylinder can accurately perform deep and shallow resection when resecting the necrotic part of the femoral head, thereby improving the efficiency of the operation.
[0020] 2. By fixing a plurality of anti-slip strips on the front and rear sides of the two handles, the doctor can drive the saw teeth to rotate through the two handles, and a plurality of anti-slip strips are arranged on the surface of the handles. The doctor can increase the rotation force of the ring saw tube with the help of the anti-slip strips, thereby facilitating the removal of the necrotic part. At the same time, the doctor can insert the clamp deep into the interior of the ring saw tube, thereby facilitating the removal of the necrotic part or performing various surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 This is a schematic diagram of the support sleeve and lifting cylinder structure of the utility model;
[0024] Figure 3 It is a schematic diagram of the structure of the lifting cylinder and the ring saw cylinder of the utility model;
[0025] Figure 4 It is a schematic diagram of the lifting cylinder structure of the utility model.
[0026] Explanation of the accompanying drawings: 1. Support sleeve; 2. Threaded wire groove; 3. Lifting cylinder; 4. Threaded coil; 5. Rotating sleeve; 6. Anti-slip groove; 7. Ring saw cylinder; 8. Saw teeth; 9. Annular limit groove; 10. Annular slide strip; 11. Handle; 12. Anti-slip strip. DETAILED DESCRIPTION
[0027] The following is combined with Figure 1-4 The utility model is described in further detail.
[0028] Embodiment 1, refer to Figure 1-4 In this embodiment, in order to solve the existing femoral head necrosis, a ring saw device is needed to remove the necrotic part of the femoral head. However, the existing ring saw device uses a sleeve for removal. The ring saw tube can move freely up and down inside the sleeve for removal. However, in some delicate removal operations, the up and down movement of the ring saw tube needs to be accurately controlled. If the ring saw tube moves too fast, too many parts will be removed, resulting in the problem that the surgical effect is affected. The utility model discloses a special ring saw assembly for the treatment of femoral head necrosis.
[0029] It comprises a support sleeve 1, the inner cavity of the support sleeve 1 is provided with a thread groove 2 from top to bottom, and the inner cavity of the support sleeve 1 is provided with a lifting mechanism;
[0030] The lifting mechanism includes a lifting cylinder 3, the outer surface of which is provided with threaded coils 4 from top to bottom. The threaded coils 4 are adapted to the threaded grooves 2. The lifting cylinder 3 is movably connected to the inner thread of the supporting sleeve 1 through the threaded coils 4 on the surface.
[0031] A rotating sleeve 5 is fixedly mounted on the surface of the lifting cylinder 3 , and a plurality of anti-skid grooves 6 are provided on the circumferential surface of the rotating sleeve 5 at equal angles.
[0032] The specific working principle is: the doctor first places the supporting sleeve 1 on the necrotic part of the patient's femoral head, and then rotates the rotating sleeve 5 on the surface of the lifting cylinder 3 according to the depth of the necrotic part inside the femoral head. The rotating sleeve 5 drives the lifting cylinder 3 to rotate, and the outer surface of the lifting cylinder 3 is provided with a threaded coil 4. The lifting cylinder 3 can rotate inside the supporting sleeve 1 by relying on the threaded coil 4, so as to adjust the height of the lifting cylinder 3 on the supporting sleeve 1. The movement of the lifting cylinder 3 can also drive the position of the ring saw cylinder 7 at the same time. At this time, the ring saw cylinder 7 can be used to resect the necrotic part of the patient's femoral head, so as to achieve precise control of the resection.
[0033] Example 2, refer to Figure 2-4 In order to solve the problem that the existing trepanation tube is inconvenient to remove the necrotic part and is inconvenient to use, in this embodiment, based on the same concept as the above-mentioned embodiment 1, the trepanation assembly for treating femoral head necrosis also includes:
[0034] A ring saw cylinder 7 is inserted into the inner cavity of the lifting cylinder 3. The interior of the ring saw cylinder 7 is open, and a plurality of saw teeth 8 are fixedly installed at equal angles on the bottom of the ring saw cylinder 7.
[0035] An annular limiting groove 9 is formed in the inner cavity of the lifting cylinder 3 , and an annular slide bar 10 is fixedly installed on the outside of the ring saw cylinder 7 . The annular slide bar 10 is adapted to the annular limiting groove 9 , and the annular slide bar 10 is slidably arranged inside the annular limiting groove 9 .
[0036] Two handles 11 are fixedly mounted at equal angles on the outer circumferential wall of the top end of the ring saw cylinder 7 , and both handles 11 are located above the lifting cylinder 3 .
[0037] A plurality of anti-slip strips 12 are fixedly installed at equal distances from top to bottom on the front and rear surfaces of the two handles 11 .
[0038] The specific working principle is: an annular limit groove 9 is opened in the inner cavity of the lifting cylinder 3, and an annular slide bar 10 is fixedly installed on the outside of the ring saw cylinder 7. The ring saw cylinder 7 can rotate freely inside the lifting cylinder 3, so that the saw teeth 8 can resect the necrotic part of the patient's femoral head. A plurality of anti-slip strips 12 are fixedly installed on the front and rear sides of the two handles 11. The doctor can drive the saw teeth 8 to rotate through the two handles 11, and a plurality of anti-slip strips 12 are arranged on the surface of the handles 11. The doctor can increase the rotation force of the ring saw cylinder 7 with the help of the anti-slip strips 12, thereby facilitating the resection of the necrotic part. At the same time, the doctor can insert the clamp deep into the ring saw cylinder 7, thereby facilitating the removal of the necrotic part or performing various surgical operations.
[0039] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A special trephine assembly for treating femoral head necrosis, comprising a support sleeve (1), Features: The inner cavity of the support sleeve (1) is provided with a thread groove (2) from top to bottom, and the inner cavity of the support sleeve (1) is provided with a lifting mechanism; The lifting mechanism comprises a lifting cylinder (3), the outer surface of which is provided with threaded coils (4) from top to bottom, the threaded coils (4) being adapted to thread grooves (2), and the lifting cylinder (3) is movably connected to the inner thread of a supporting sleeve (1) via the threaded coils (4) on the surface.
2. A special trepanation assembly for treating femoral head necrosis according to claim 1, Features: A rotating sleeve (5) is fixedly mounted on the surface of the lifting cylinder (3), and a plurality of anti-slip grooves (6) are provided on the circumferential surface of the rotating sleeve (5) at equal angles.
3. A special trepanation assembly for treating femoral head necrosis according to claim 1, Features: A ring saw cylinder (7) is inserted into the inner cavity of the lifting cylinder (3); the interior of the ring saw cylinder (7) is open; and a plurality of saw teeth (8) are fixedly mounted at equal angles on the bottom of the ring saw cylinder (7).
4. A special trepanation assembly for treating femoral head necrosis according to claim 3, Features: The inner cavity of the lifting cylinder (3) is provided with an annular limiting groove (9), and an annular sliding bar (10) is fixedly installed on the outside of the ring saw cylinder (7). The annular sliding bar (10) is adapted to the annular limiting groove (9), and the annular sliding bar (10) is slidably arranged inside the annular limiting groove (9).
5. A special trepanation assembly for treating femoral head necrosis according to claim 4, Features: Two handles (11) are fixedly mounted at equal angles on the outer circumferential wall of the top end of the ring saw cylinder (7), and both handles (11) are located above the lifting cylinder (3).
6. A special trepanation assembly for treating femoral head necrosis according to claim 5, Features: A plurality of anti-slip strips (12) are fixedly mounted at equal distances from top to bottom on the front and rear surfaces of the two handles (11).