Femoral head necrosis tissue cleaning device

Abstract

The utility model provides a femoral head necrotic tissue cleaning device, which belongs to the technical field of medical instruments, and aims to solve the problem that the cleaning range is limited when the necrotic tissue is cleaned by the conventional device, the femoral head necrotic tissue cleaning device comprises a cleaner and a sleeve, the cleaner is movably arranged in the sleeve in a penetrating manner, and the cleaner comprises a mounting cylinder, a scraper and an adjusting component, the scraper is movably connected to the far end of the mounting cylinder, the adjusting assembly is connected to the mounting cylinder and movably connected with the scraper, the range of the scraper for removing the femoral head necrosis area is adjusted by means of opening and closing of the operating pliers similar to a scissor structure, the removing range of the necrosis bone tissue area is enlarged, and the removing efficiency of the necrosis bone tissue is improved; the operation time is shortened, and the device has great prospects and popularization value clinically.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a device for cleaning necrotic tissue of the femoral head. Background Technology

[0002] Avascular necrosis of the femoral head, also known as ischemic necrosis or aseptic necrosis of the femoral head, refers to a condition where the blood supply to the femoral head is impaired or interrupted, leading to damage to the nourishing blood vessels. This results in the femoral head losing its nutrition, ultimately causing bone degeneration or necrosis, fracture or collapse of the trabeculae, and causing hip pain and functional impairment. It has a high incidence rate clinically, and is more common in young adults, making it a common bone and joint disease.

[0003] In the surgical treatment of avascular necrosis of the femoral head, femoral head reconstruction has achieved good results in recent years. The overall treatment strategy is as follows: first, the necrotic lesions in the femoral head are removed; then, the femoral head is filled with intact autologous bone collected during the procedure; finally, a mineralized collagen-based reconstruction rod is implanted. This gives the damaged femoral head sufficient mechanical strength and maintains its original structural function. It can avoid or delay total hip replacement and reduce the economic and psychological burden on patients.

[0004] Currently disclosed femoral head necrosis removal devices, such as the Chinese patent with publication number CN220069811U entitled "Femoral Head Necrosis Removal Device," include a remover and a sleeve. The remover includes a rod and a scraper, with the scraper connected to the distal end of the rod. The sleeve is provided with a movable channel for the remover to pass through, which can be used to remove necrotic bone tissue from the patient's femoral head and can improve the removal efficiency of necrotic bone tissue.

[0005] However, when the aforementioned removal device is used, the scraper is fixed to the outer periphery of the rod body, and the rod body is restricted by the sleeve, which limits the range of the scraper's cleaning of necrotic tissue. Summary of the Invention

[0006] To address the shortcomings of the existing technologies, this utility model proposes a device for cleaning necrotic tissue in the femoral head. By movably connecting a scraper between the mounting cylinder and the adjustment component, and utilizing the opening and closing mechanism of the operating clamps, which is similar to a scissor structure, the range of the area of ​​necrotic tissue in the femoral head that the scraper removes can be adjusted, thereby solving the problems existing in the background technology.

[0007] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0008] A device for cleaning necrotic tissue of the femoral head includes a remover and a sleeve, wherein the remover is movably inserted into the sleeve, wherein:

[0009] The cleaner includes a mounting cylinder, a scraper, and an adjustment assembly. The scraper is movably connected to the distal end of the mounting cylinder, and the adjustment assembly is connected to the mounting cylinder and movably connected to the scraper.

[0010] A further preferred embodiment of the above technical solution is: the mounting cylinder is a hollow cylinder, with two mounting grooves and two through holes symmetrically provided at its far end, and the mounting grooves are located between the far end of the mounting cylinder and the through holes.

[0011] Preferably, there are two scrapers, each hinged to a corresponding mounting groove.

[0012] More preferably, the scraper includes a blade body and a cutting edge, the cutting edge being located on the side of the blade body away from the mounting cylinder, the upper end of the blade body being connected to the mounting groove, and the lower end of the blade body being connected to the adjustment component.

[0013] Furthermore, by adopting the above scheme, the adjustment component includes an operating clamp and two compression springs. The distal end of the operating clamp passes through the mounting cylinder and is connected to the scraper. The two ends of the compression springs are respectively connected to the operating clamp and the mounting cylinder.

[0014] More preferably, the distal end of the operating clamp is provided with a ring, which is hinged to the scraper.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By setting up a scraper, which includes a mounting cylinder, a scraper, and an adjustment component, the upper and lower ends of the scraper are hinged to the mounting cylinder and the adjustment component, respectively. By rotating the operating clamp of the adjustment component, the scraper is rotated to remove necrotic bone tissue. The angle of the scraper can be changed by adjusting the opening degree of the operating clamp, thereby expanding the scraper's cleaning range and improving its clinical applicability.

[0017] 2. This utility model, through the cooperation of the sleeve and the remover, can quickly remove necrotic bone tissue from the femoral head of the patient, improve the removal efficiency of necrotic bone tissue, thereby speeding up the operation and effectively shortening the operation time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings required in the embodiments will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the overall structure of a femoral head necrosis tissue cleaning device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the cleaner of this utility model;

[0021] Figure 3 This is an internal perspective view of the cleaner of this utility model;

[0022] Figure 4 This is a partially enlarged view of the distal end of the cleaner of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0024] Figure 6 This is a partially enlarged view of the distal end of the adjustment component of this utility model;

[0025] Figure 7 This is a schematic diagram of the scraper of this utility model;

[0026] Figure 8 This is a schematic diagram showing the local state after the scraper angle is adjusted using the operating pliers;

[0027] In the diagram: 1-cleaner; 11-mounting cylinder; 111-mounting groove; 112-through hole; 113-mounting shaft; 12-scraper; 121-blade body; 122-cutting edge; 123-round tube; 124-connecting shaft; 13-adjusting assembly; 131-operating clamp; 132-compression spring; 133-ring; 134-crossbar; 2-sleeve. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments, not all embodiments. For those skilled in the art, other embodiments can be obtained without creative effort.

[0029] In the description of this utility model, unless otherwise specified and limited, the directional terms such as "upper," "lower," "left," "right," "front," and "rear" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the corresponding positional relationship may change. "Distal end" can be understood as the front part of a part or component relatively close to the human body, and "proximal end" can be understood as the rear part of a part or component relatively close to the outside of the human body. When it is not explicitly specified which part or component is being referred to as "proximal end" or "distal end," it defaults to referring to the proximal end or distal end of the entire device. Example 1

[0030] Reference Figure 1-8 This utility model provides a femoral head necrosis tissue cleaning device, including a cleaner 1 and a sleeve 2. The cleaner 1 is movably inserted into the sleeve 2. The cleaner 1 is used to remove necrotic bone tissue at the femoral head of the patient. The sleeve 2 has a through-hole for the cleaner 1 to movably insert into the through-hole.

[0031] It is worth noting that during the removal of necrotic tissue from the femoral head, the front end of the device (with...) Figure 1 In terms of relative position, referring to the left end of the remover, the device will extend into the human body, and the rear end of the device (in terms of its position) will extend into the human body. Figure 1 In terms of its relative position, it refers to the right end of the cleaner (for medical staff to operate).

[0032] like Figure 2-4 As shown, the cleaner 1 includes a mounting cylinder 11, a scraper 12, and an adjusting assembly 13. The adjusting assembly 13 is connected to the mounting cylinder 11 and movably connected to the scraper 12. The mounting cylinder 11 is a hollow cylinder. Two mounting grooves 111 and two through holes 112 are axially symmetrically provided at the distal end of the mounting cylinder 11. The mounting grooves 111 are located between the distal end of the mounting cylinder 11 and the through holes 112. A mounting shaft 113 is fixedly connected to the mounting grooves 111. Two scrapers 12 are provided, each hinged to its corresponding mounting groove 111. Specifically, refer to... Figure 7 The upper end of the scraper 12 is connected to the round tube 123, which is movably sleeved on the mounting shaft 113, so that the upper end of the scraper 12 is hinged to the mounting cylinder 11, and the lower end of the scraper 12 is hinged to the far end of the adjusting component 13.

[0033] More specifically, combined Figure 5-6 As shown, the adjustment assembly 13 includes an operating clamp 131 and two compression springs 132. The distal end of the operating clamp 131 passes through the mounting cylinder 11 and is connected to the scraper 12. One end of the compression spring 132 is fixedly connected to the inner wall of the mounting cylinder 11, and the other end of the compression spring 132 is fixedly connected to the operating clamp 131. Further, each distal end of the operating clamp 131 is provided with a crossbar 134. The two crossbars 134 are arranged opposite each other and are integrally formed with the operating clamp 131. A ring 133 is fixedly connected to the opposite ends of the two crossbars 134. The ring 133 cooperates with the connecting shaft 124 at the lower end of the scraper 12. When the operating clamp 131 is opened, the necrotic tissue of the femoral head can be cleaned by the cooperation between the compression spring 132 and the inner wall of the mounting cylinder 11, using the scraper 12 adjusted to a suitable angle. By manipulating the proximal end of the operating clamp 131, the distal end of the operating clamp 131 drives the scraper 12 to rotate at an angle (in conjunction with...). Figure 8 As shown in the figure, this increases the cleaning range of the scraper 12 on the necrotic tissue area.

[0034] Specifically, the scraper 12 includes a blade body 121 and a cutting edge 122. The cutting edge 122 is located on the side of the blade body 121 opposite to the mounting cylinder 11. The blade body 121 protrudes radially outward along the mounting cylinder 11, reversing from the distal end to the proximal end of the mounting cylinder 11. The distance from the cutting edge 122 to the mounting cylinder 11 gradually increases. Figure 7In this embodiment, the cutting edge 122 is a curved arc shape; by rotating the proximal end of the operating forceps 131, the distal end of the operating forceps 131 drives the scraper 12 to rotate and remove necrotic tissue in the femoral head necrosis area, which effectively improves the removal efficiency.

[0035] In this embodiment, the sleeve 2 plays a positioning role in the removal of necrotic tissue. After the sleeve 2 is inserted into the femoral head, the scraper 12 is used to clean the necrotic bone tissue at the necrotic site of the femoral head. Example 2

[0036] This utility model relates to a device for cleaning necrotic tissue in the femoral head, which, in practical applications:

[0037] Under the guidance of the C-arm machine, the sleeve 2 is inserted into the patient's femoral head. The distal end of the sleeve 2 is located in the necrotic area of ​​the patient's femoral head. The sleeve 2 serves as the positioning and guiding tool for the removal device.

[0038] After the cleaner 1 is inserted through the movable channel of the sleeve 2, the scraper 12 extends from the distal end of the sleeve 2. By rotating the operating clamp 131, the scraper 12 is scraped in the necrotic area of ​​the patient's femoral head to remove necrotic bone tissue. Under the guidance of the sleeve 2, the accuracy of removing necrotic bone tissue is improved, and the non-necrotic area of ​​the femoral head can also be protected.

[0039] When it is necessary to expand the area for removing necrotic bone tissue, the proximal end of the operating clamp 131 is opened. At this time, the distal end of the operating clamp 131 is opened simultaneously, so that the two crossbars 134 push the lower end of the scraper 12 to rotate away from the mounting cylinder 11. The angle between the lower end of the scraper 12 and the mounting cylinder 11 increases. When the operating clamp 131 is rotated, the cutting edge 122 of the scraper 12 can form a larger cleaning contact surface, improving the cleaning efficiency and operability of necrotic bone tissue.

[0040] The device of this invention can form a cavity in the femoral head necrosis tissue by rotating the remover 1, which facilitates the backfilling of bone graft material in the later stage and is beneficial for the targeted and precise core decompression of early and mid-stage femoral head necrosis. After the removal is completed, the device of this invention is removed from the patient's femoral head.

[0041] It should be understood that the above detailed description of the embodiments of the present invention provided in the accompanying drawings is only for further explanation of the present invention and is not intended to limit the scope of the claimed present invention, but merely to illustrate selected embodiments of the present invention. Based on the embodiments of the present invention, any non-essential improvements and adjustments made by those skilled in the art based on the above description of the present invention are all within the protection scope of the present invention.

Claims

1. A device for cleaning necrotic tissue in the femoral head, characterized in that, Includes a cleaner (1) and a sleeve (2), wherein the cleaner (1) is movably inserted into the sleeve (2), wherein: The cleaner (1) includes a mounting cylinder (11), a scraper (12) and an adjustment assembly (13). The scraper (12) is movably connected to the far end of the mounting cylinder (11), and the adjustment assembly (13) is connected to the mounting cylinder (11) and movably connected to the scraper (12).

2. The device for cleaning necrotic tissue of the femoral head according to claim 1, characterized in that, The mounting cylinder (11) is a hollow cylinder with two mounting grooves (111) and two through holes (112) symmetrically arranged at its far end. The mounting grooves (111) are located between the far end of the mounting cylinder (11) and the through holes (112).

3. The device for cleaning necrotic tissue of the femoral head according to claim 2, characterized in that, There are two scrapers (12), and the two scrapers (12) are respectively hinged to the corresponding mounting slots (111).

4. The device for cleaning necrotic tissue of the femoral head according to claim 3, characterized in that, The scraper (12) includes a blade body (121) and a cutting edge (122). The cutting edge (122) is located on the side of the blade body (121) away from the mounting cylinder (11). The upper end of the blade body (121) is connected to the mounting groove (111), and the lower end of the blade body (121) is connected to the adjustment component (13).

5. The femoral head necrosis tissue cleaning device according to claim 4, characterized in that, The adjustment assembly (13) includes an operating clamp (131) and two compression springs (132). The distal end of the operating clamp (131) is inserted into the mounting cylinder (11) and connected to the scraper (12). The two ends of the compression springs (132) are respectively connected to the operating clamp (131) and the mounting cylinder (11).

6. The femoral head necrosis tissue cleaning device according to claim 5, characterized in that, The distal end of the operating clamp (131) is provided with a ring (133), which is hinged to the scraper (12).

Images