A high-precision knee meniscus cutting device

Abstract

The present invention relates to the technical field of knee joint surgery, specifically a high-precision knee joint meniscus cutting device, comprising a device housing and a downward pressing polygonal rod, wherein the lower end of the downward pressing polygonal rod is fixedly installed with a support assembly through a meniscus gasket, the lower end of the downward pressing polygonal rod is fixedly installed at the center of the upper surface of the meniscus gasket, the upper end of the downward pressing polygonal rod body is provided with a device housing, one side of the upper surface of the device housing is fixedly installed with a fixing assembly through two flip rod mounting seats, one side of the upper surface of the device housing is respectively fixedly installed with two flip rod mounting seats, the bottom end of the downward pressing polygonal rod body and the movable sleeve located on the upper surface of the meniscus gasket are provided with a meniscus positioning sleeve, and a cutting limit plate is fixedly installed in the middle of the downward pressing polygonal rod body. The present invention can ensure that the meniscus removed is regular, thereby effectively protecting the cartilage below the meniscus and providing accurate size for subsequent transplantation.

Description

Technical Field

[0001] The invention relates to the technical field of knee joint surgery, and in particular to a high-precision knee joint meniscus cutting device. Background Art

[0002] The meniscus is an important component of the knee joint. Its existence and integrity are crucial to ensure the normal function of the knee joint. As competitive sports develop towards higher, faster and stronger directions, the incidence of refractory meniscus injuries is also increasing significantly. Meniscectomy as a traditional surgical method has been proven to be unable to guarantee the long-term treatment effect of refractory meniscus injuries.

[0003] Therefore, meniscus transplantation has become a new solution to meniscus injury. The purpose of meniscus transplantation can be summarized as: relieving pain after meniscus removal, preventing degeneration of articular cartilage and subchondral bone after meniscus removal, preventing or reducing the risk of osteoarthritis, and restoring mechanical balance after meniscus removal. In order to achieve meniscus removal, a specific cutting device is required to perform the cutting operation.

[0004] However, the above cutting device has the following defects in use: before meniscus transplantation, the damaged meniscus that can no longer be retained needs to be removed. However, manual removal cannot guarantee a regular shape, and it is easy to damage the cartilage under the meniscus, leading to more serious cartilage diseases. Moreover, it cannot accurately cut different menisci one by one, so it is not adaptable and is prone to risks. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the present invention provides a high-precision knee meniscus cutting device, thereby solving the defects of direct manual meniscus removal and the problem of uncontrollable secondary injury.

[0007] (II) Technical solution

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] A high-precision knee meniscus cutting device comprises a device shell and a downward pressing polygonal rod, the lower end of the downward pressing polygonal rod is fixedly installed with a supporting assembly through a meniscus gasket, the lower end of the downward pressing polygonal rod is fixedly installed at the center of the upper surface of the meniscus gasket, the upper movable sleeve of the downward pressing polygonal rod body is provided with a device shell, one side of the upper surface of the device shell is fixedly installed with a fixing assembly through two flip rod mounting seats, two flip rod mounting seats are fixedly installed on one side of the upper surface of the device shell respectively, the bottom end of the downward pressing polygonal rod body and the movable sleeve located on the upper surface of the meniscus gasket are provided with a meniscus positioning sleeve, and a cutting limit plate is fixedly installed in the middle of the downward pressing polygonal rod body.

[0010] Preferably, a docking threaded column is fixedly installed on the top of the downward-pressing polygonal rod body, and the docking threaded column body is threadedly installed with a threaded mounting groove through a limit knob, a threaded mounting groove is penetrated through the center of the lower end of the limit knob, and an anti-ejection plate is fixedly installed around the lower end of the limit knob.

[0011] Preferably, a blade mounting groove is provided through the inner side of the device housing, a U-shaped cutting blade is inserted in the blade mounting groove, a spring mounting clamp groove is fixedly installed on the outer ring of the upper end of the cutting limit plate, and one end of a pressure spring is fixedly installed in the spring mounting clamp groove and on the upper surface of the cutting limit plate.

[0012] Preferably, the other end of the pressure spring is limited and pressed against the inner wall surface of the device casing, and one end of a connecting fixing rod is fixedly installed around the cutting limit plate body, and the other end of each connecting fixing rod is slidably installed on the inner wall surface of the device casing side.

[0013] Preferably, the supporting assembly includes a crescent plate gasket and a top plate fitting groove, wherein two top plate fitting grooves are provided and are respectively arranged at the two ends of the upper surface of the crescent plate gasket, and spring recovery grooves are respectively provided in the middle of the two top plate fitting grooves, and one end of a top plate spring is fixedly installed inside each of the spring recovery grooves, and each of the spring recovery grooves can store the top plate spring during the entire recovery.

[0014] Preferably, the other ends of the two top plate springs are respectively fixedly mounted on the cutting auxiliary top plates, and the two cutting auxiliary top plates are both fixedly mounted on the top plate mounting shaft body. The two cutting auxiliary top plates are both matched with the top plate fitting grooves, and a rotating shaft mounting groove is penetrated at one end of each top plate fitting groove, and a top plate mounting shaft is rotatably mounted in each rotating shaft mounting groove.

[0015] Preferably, the fixing assembly includes an equipment protection plate and a flip rod mounting seat, a flip axis is rotatably installed between the two flip rod mounting seats, the equipment protection plate is fixedly installed on the flip axis body, and shell connecting blocks are fixedly installed on the surfaces of both ends of the equipment protection plate body.

[0016] Preferably, a blade fixing sleeve is fixedly installed on the outer side of the two sleeve connecting blocks, and the interior of the two blade fixing sleeves is hollow and provided with a blade end groove, and blade positioning blocks are fixedly installed on both sides of the two blade end grooves, and each blade end groove is clamped and fixed with a U-shaped cutting blade end by a blade positioning block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the above technical scheme, by pressing down the movable sleeve of the polygonal rod body provided with the device shell, the device shell can be moved up and down, and cooperate with the U-shaped cutting blade to perform the cutting operation on the meniscus at the upper end of the support component, so as to ensure that the resected position will not be offset, and confirm that the resected meniscus is regular. Through the support component, the position of the cut meniscus can be limited, and the range of movement of the lower end of the meniscus can be reduced, thereby helping to improve the cutting effect and reducing the difficulty of personnel operation.

[0019] 2. The U-shaped cutting blade can be fixed in position by the fixing assembly in cooperation with the blade mounting groove, thereby preventing the blade from moving during the cutting process, thereby affecting the cutting position and subsequent operations. The device protection plate in the fixing assembly can also protect the interior of the device to prevent the interior from being affected by environmental problems, thereby ensuring that the present invention is not affected and can operate normally during the process. The present invention can ensure that the meniscus removed is regular, thereby effectively protecting the cartilage under the meniscus and providing accurate size for subsequent transplantation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-precision knee meniscus cutting device of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of a high-precision knee meniscus cutting device of the present invention from another viewing angle;

[0022] Figure 3 This is a bottom-up structural section of a high-precision knee meniscus cutting device of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a support assembly of a high-precision knee meniscus cutting device of the present invention;

[0024] Figure 5 This is a cross-section of the internal structure of a support component of a high-precision knee meniscus cutting device of the present invention;

[0025] Figure 6This is a schematic diagram of the overall structure of a fixing assembly of a high-precision knee meniscus cutting device of the present invention;

[0026] Figure 7 The present invention is a cross-sectional view of the overall structure of a high-precision knee meniscus cutting device.

[0027] In the figure: 1. Device housing; 2. Press-down polygonal rod; 3. Support assembly; 301. Crescent plate gasket; 302. Cutting auxiliary top plate; 303. Top plate fitting groove; 304. Shaft mounting groove; 305. Top plate mounting shaft; 306. Top plate spring; 307. Spring recovery groove; 4. Crescent plate positioning sleeve; 5. U-shaped cutting blade; 6. Limit knob; 7. Fixing assembly; 701. Equipment protection plate; 702. Flip rod mounting seat; 703. Shell connecting block; 704. Blade fixing shell; 705. Blade end groove; 706. Blade positioning block; 707. Flip shaft; 8. Blade mounting groove; 9. Connecting fixing rod; 10. Cutting limit plate; 11. Pressure spring; 12. Spring mounting clamping groove; 13. Anti-ejection piece; 14. Threaded mounting groove; 15. Docking thread column. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Example

[0030] like Figure 1-7 As shown, a high-precision knee meniscus cutting device comprises a device shell 1 and a downward pressing polygonal rod 2. The lower end of the downward pressing polygonal rod 2 is fixedly installed with a supporting assembly 3 through a crescent plate gasket 301. The lower end of the downward pressing polygonal rod 2 is fixedly installed at the center of the upper surface of the crescent plate gasket 301. The upper end of the rod body of the downward pressing polygonal rod 2 is provided with a movable sleeve of the device shell 1. A fixing assembly 7 is fixedly installed on one side of the upper surface of the device shell 1 through two flip rod mounting seats 702. Two flip rod mounting seats 702 are fixedly installed on one side of the upper surface of the device shell 1 respectively. A crescent plate positioning sleeve 4 is provided at the bottom end of the rod body of the downward pressing polygonal rod 2 and the movable sleeve located on the upper surface of the crescent plate gasket 301. A cutting limit plate 10 is fixedly installed in the middle of the rod body of the downward pressing polygonal rod 2.

[0031] Through the above technical scheme, by pressing down the polygonal rod 2 with the movable sleeve of the device shell 1, the device shell 1 can be moved up and down, and cooperate with the U-shaped cutting blade 5 to perform the cutting operation on the meniscus at the upper end of the support component 3, so as to ensure that the resected position will not be offset, and confirm that the resected meniscus is regular. Through the support component 3, the position of the cut meniscus can be limited, and the range of movement of the lower end of the meniscus can be reduced, so as to help improve the cutting effect and reduce the difficulty of personnel operation. The U-shaped cutting blade 5 can be fixed in position by cooperating with the blade mounting groove 8 through the fixing component 7, so as to prevent it from moving in position during the cutting process, thereby affecting the cutting position and affecting the subsequent operation. The equipment protection plate 701 in the fixing component 7 is also used to protect the inside of the device to prevent the internal from being affected by environmental problems, thereby ensuring that the present invention is not affected during the process and can operate normally.

[0032] In this embodiment, a docking threaded column 15 is fixedly installed at the top of the rod body of the downward pressing polygonal rod 2, and a threaded installation groove 14 is threadedly installed on the rod body of the docking threaded column 15 through the limit knob 6. The threaded installation groove 14 is penetrated through the center of the lower end of the limit knob 6, and an anti-ejection piece 13 is fixedly installed around the lower end of the limit knob 6. The docking threaded column 15 can be threadedly installed with the threaded installation groove 14 through the limit knob 6, so that the anti-ejection piece 13 can be used to prevent the device housing 1 from rebounding during the cutting process, thereby ensuring that the present invention can operate normally.

[0033] It should be noted that a blade installation slot 8 is provided through the inner side of the device housing 1, a U-shaped cutting blade 5 is inserted in the blade installation slot 8, a spring installation clip slot 12 is fixedly installed on the outer ring of the upper end of the cutting limit plate 10, and one end of a pressure spring 11 is fixedly installed in the spring installation clip slot 12 and on the upper surface of the cutting limit plate 10. The U-shaped cutting blade 5 is inserted in the blade installation slot 8 to limit the approximate position of the U-shaped cutting blade 5, and the pressure springs 11 are respectively arranged in the spring installation clip slot 12 and at both ends of the inner wall surface of the device housing 1, so that the present invention can be more powerful and convenient for operators to cut when cutting, and improve cutting efficiency.

[0034] In the specific setting, the other end of the pressure spring 11 is limited and pressed against the inner wall surface of the device housing 1, and one end of the connecting and fixing rod 9 is fixedly installed around the cutting limit plate 10, and the other end of each connecting and fixing rod 9 is slidably installed on the inner wall surface of the device housing 1. By fixing the connecting and fixing rod 9 around the cutting limit plate 10, it can be ensured that the cutting limit plate 10 can perform the limiting operation, and the other end of the connecting and fixing rod 9 is slidably installed on the inner wall surface of the device housing 1 to perform the auxiliary anti-deviating operation.

[0035] The support assembly 3 includes a crescent plate gasket 301 and a top plate fitting groove 303. Two top plate fitting grooves 303 are provided and are respectively arranged at the two ends of the upper surface of the crescent plate gasket 301. The middle of the two top plate fitting grooves 303 is respectively provided with spring recovery grooves 307. One end of a top plate spring 306 is fixedly installed inside each spring recovery groove 307. Each spring recovery groove 307 can store the top plate spring 306 during the entire recovery. The two ends of the top plate spring 306 are arranged on the spring recovery groove 307 and the lower surface of the cutting auxiliary top plate 302, so that the cutting auxiliary top plate 302 can be ejected outward, and the position of the lower end of the meniscus is limited by the cutting auxiliary top plate 302.

[0036] It can be understood that in the present application, the other ends of the two top plate springs 306 are respectively fixedly mounted on the cutting auxiliary top plate 302, and the two cutting auxiliary top plates 302 are both fixedly mounted on the top plate mounting shaft 305. The two cutting auxiliary top plates 302 are both aligned with the top plate fitting groove 303, and one end of each top plate fitting groove 303 is penetrated with a rotating shaft mounting groove 304, and each rotating shaft mounting groove 304 is rotatably mounted with a top plate mounting shaft 305. The cutting auxiliary top plates 302 are aligned with the top plate fitting groove 303 and the spring recovery groove 307 can store the entire top plate spring 306 during recovery, so that the position limitation operation can be performed without affecting the insertion of the normal position.

[0037] In the specific configuration, the fixing assembly 7 includes a device protection plate 701 and a flip rod mounting seat 702, a flip shaft 707 is rotatably mounted between the two flip rod mounting seats 702, the device protection plate 701 is fixedly mounted on the body of the flip shaft 707, and a sleeve connection block 703 is fixedly mounted on both ends of the body of the device protection plate 701. By connecting the device protection plate 701 and the flip rod mounting seat 702 with the flip shaft 707, the device protection plate 701 can be flipped, which is convenient for later inspection of the inside of the device and replacement of the U-shaped cutting blade 5.

[0038] It should be noted that blade fixing sleeves 704 are fixedly installed on the outside of the two sleeve connection blocks 703, and the inside of the two blade fixing sleeves 704 is hollow and provided with blade end slots 705. Blade positioning blocks 706 are fixedly installed on both sides of the two blade end slots 705, and the end of the U-shaped cutting blade 5 is clamped and fixed to each blade end slot 705 through the blade positioning blocks 706. The blade positioning blocks 706 are fixedly installed on both sides of the blade end slot 705, and the U-shaped cutting blade 5 can be fixed in position in cooperation with the blade installation slot 8, thereby preventing it from moving in position during the cutting process.

[0039] The working principle of this high-precision knee meniscus cutting device:

[0040] When in use, firstly, the size and specification of the meniscus positioning sleeve 4 will be replaced according to the needs of different positions or conditions, so that the cutting position and location can be accurately confirmed and adapted to different sizes to prevent gaps in the middle. The support component 3 of the device is placed at the lower end of the meniscus, and then the two ends of the top plate spring 306 are arranged on the spring recovery groove 307 and the lower surface of the cutting auxiliary top plate 302, so that the cutting auxiliary top plate 302 can be ejected outward, and the position of the lower end of the meniscus is limited by the cutting auxiliary top plate 302, and then the device shell 1 is provided with the movable sleeve of the polygonal rod 2 by pressing down, so that the device shell 1 can be moved up and down, and cooperate with the U-shaped cutting blade 5 to perform the cutting operation on the meniscus at the upper end of the support component 3, and the pressure spring 11 is respectively set during cutting. It is placed in the spring mounting clip groove 12 and at both ends of the inner wall surface of the device housing 1, so that the present invention can be more powerful and convenient for operators to cut during cutting, thereby improving cutting efficiency. In later use, the device protection plate 701 and the flip rod mounting seat 702 can be connected by the flip shaft 707, so that the device protection plate 701 can be flipped, which is convenient for later inspection of the inside of the device and replacement of the U-shaped cutting blade 5. The threaded mounting groove 14 can be threadedly installed through the limit knob 6 through the docking thread column 15, so that the anti-ejection sheet 13 can be used to prevent the device housing 1 from rebounding during the cutting process, thereby ensuring the normal operation of the present invention, and the limit knob 6 can be taken out to disassemble the present invention for cleaning or maintenance.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-precision knee meniscus cutting device, comprising a device housing (1) and a downward pressing polygonal rod (2), characterized in that: The lower end of the downward pressing polygonal rod (2) is fixedly mounted with a support assembly (3) via a crescent plate gasket (301); the lower end of the downward pressing polygonal rod (2) is fixedly mounted on the center of the upper surface of the crescent plate gasket (301); a device housing (1) is provided on the upper movable sleeve of the rod body of the downward pressing polygonal rod (2); a fixing assembly (7) is fixedly mounted on one side of the upper surface of the device housing (1) via two flip rod mounting seats (702); two flip rod mounting seats (702) are respectively fixedly mounted on one side of the upper surface of the device housing (1); a crescent plate positioning sleeve (4) is provided on the lower end of the rod body of the downward pressing polygonal rod (2) and the movable sleeve located on the upper surface of the crescent plate gasket (301); and a cutting limit plate (10) is fixedly mounted in the middle of the rod body of the downward pressing polygonal rod (2); A docking threaded column (15) is fixedly installed on the top of the rod body of the downward pressing polygonal rod (2), and a threaded installation groove (14) is threadedly installed on the rod body of the docking threaded column (15) through a limit knob (6). A threaded installation groove (14) is penetrated through the center of the lower end of the limit knob (6), and an anti-ejection plate (13) is fixedly installed around the lower end of the limit knob (6). A blade installation groove (8) is penetrated through the inner side of the device housing (1), and a U-shaped cutting blade (5) is inserted in the blade installation groove (8). A spring installation clamping groove (12) is fixedly installed on the outer ring of the upper end of the cutting limit plate (10), and one end of a pressure spring (11) is fixedly installed in the spring installation clamping groove (12) and located on the upper surface of the cutting limit plate (10); The support assembly (3) comprises a crescent plate gasket (301) and a top plate fitting groove (303), wherein two top plate fitting grooves (303) are provided and are respectively arranged at two ends of the upper surface of the crescent plate gasket (301), and spring recovery grooves (307) are respectively provided in the middle of the two top plate fitting grooves (303), and one end of a top plate spring (306) is fixedly installed inside each of the spring recovery grooves (307), and each of the spring recovery grooves (307) can store the top plate spring (306) during the entire recovery.

2. A high-precision knee meniscus cutting device according to claim 1, characterized in that: The other end of the pressure spring (11) is limited and pressed against the upper inner wall surface of the device housing (1), and one end of a connecting and fixing rod (9) is fixedly installed around the body of the cutting limit plate (10), and the other end of each connecting and fixing rod (9) is slidably installed on the side inner wall surface of the device housing (1).

3. A high-precision knee meniscus cutting device according to claim 1, characterized in that: The other ends of the two top plate springs (306) are respectively fixedly mounted on the cutting auxiliary top plate (302), and the two cutting auxiliary top plates (302) are both fixedly mounted on the shaft body of the top plate mounting shaft (305). The two cutting auxiliary top plates (302) are both aligned with the top plate fitting groove (303), and a rotating shaft mounting groove (304) is penetrated at one end of each top plate fitting groove (303), and a top plate mounting shaft (305) is rotatably mounted in each rotating shaft mounting groove (304).

4. A high-precision knee meniscus cutting device according to claim 1, characterized in that: The fixing assembly (7) comprises a device protection plate (701) and a flip rod mounting seat (702), a flip shaft (707) is rotatably mounted between the two flip rod mounting seats (702), the device protection plate (701) is fixedly mounted on the shaft body of the flip shaft (707), and casing connection blocks (703) are fixedly mounted on the surfaces of both ends of the body of the device protection plate (701).

5. A high-precision knee meniscus cutting device according to claim 4, characterized in that: A blade fixing sleeve (704) is fixedly mounted on the outside of the two sleeve connecting blocks (703); the inside of the two blade fixing sleeves (704) is hollow and provided with a blade end slot (705); blade positioning blocks (706) are fixedly mounted on both sides of the two blade end slots (705); and the end of a U-shaped cutting blade (5) is clamped and fixed to each blade end slot (705) through a blade positioning block (706).

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