Device for minimally invasive repair of knee joint cartilage

Abstract

The device comprises a protection pad, a stabilizing assembly is arranged on the protection pad, a pair of rotating shafts are arranged on one side of the protection pad through fixing columns, sleeves are rotationally clamped to the outer sides of the two rotating shafts, the two sleeves are connected through a rotating frame, and the stabilizing assembly comprises connecting bases arranged at the two ends of the rotating frame; a clamping wheel is rotationally connected to the connecting seat, traction ropes are clamped on the outer side of the clamping wheel, a winder is arranged on the rear side of the protection pad, the winder is connected with one ends of the two traction ropes, and the free ends of the two traction ropes are connected through an inflation ring; the stabilizing assembly arranged in the knee joint cartilage removing device can press the knee joint cartilage of a patient, when an operator removes the seriously damaged cartilage of the patient, the stabilizing assembly can press and fix other cartilage which does not need to be removed, and therefore displacement or falling of other cartilage is reduced, and after the pressing film presses the cartilage on one side of the knee joint of the patient, the cartilage can be removed. And the pressed film can be cut open according to the previously confirmed position to remove part of seriously worn articular cartilage.

Description

Technical Field

[0001] The present invention relates to the technical field of cartilage repair, and more particularly to a device for minimally invasive repair of knee joint cartilage. Background Art

[0002] Minimally invasive repair of knee cartilage aims to promote cartilage regeneration or replacement through minimally invasive techniques, relieve pain and restore joint function. Commonly used repair methods in clinical practice include: arthroscopic cartilage cleaning, microfracture, autologous chondrocyte transplantation, matrix-induced autologous chondrocyte transplantation, stem cell / biological therapy, etc. Arthroscopic cartilage cleaning refers to the removal of loose or worn cartilage fragments through arthroscopy, trimming irregular edges, and reducing joint friction and inflammation.

[0003] However, when existing minimally invasive knee cartilage repair devices are used to remove loose or worn cartilage fragments from patients, it is difficult to fix cartilage that is less damaged. As a result, the process of removing severely worn cartilage can easily cause the surrounding cartilage with less damaged conditions to move, thereby increasing the loss of the patient's own tissues during the surgery and prolonging the patient's recovery period. Summary of the Invention

[0004] The present invention provides a device for minimally invasive repair of knee cartilage to solve the problem that the existing minimally invasive repair device for knee cartilage is difficult to fix the cartilage with less severe damage when removing the loose or worn cartilage fragments of the patient, thereby increasing the loss of the patient's own tissue during the operation and prolonging the patient's recovery period.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A device for minimally invasive repair of knee cartilage, comprising a pad, a stabilizing assembly being provided on the pad, a pair of rotating shafts being provided on one side of the pad through a fixing column, sleeves being rotatably clamped on the outer sides of the two rotating shafts, and the two sleeves being connected by a rotating frame, the stabilizing assembly comprising connecting seats provided at both ends of the rotating frame, a clamping wheel being rotatably connected to the connecting seat, a traction rope being clamped on the outer side of the clamping wheel, a reel being provided on the rear side of the pad, the reel being connected to one end of each of the two traction ropes, and the free ends of the two traction ropes being connected by an inflatable ring.

[0007] Preferably, the inflation ring is filled with a solid gas with a low melting point, the inner side of the inflation tube is connected with a compression film, the compression film is made of biological material, and the compression film has a certain elasticity.

[0008] Preferably, a fixed shaft is provided on the connecting arm, a rotating wheel is rotatably mounted on the fixed shaft, a slot is provided on the rotating wheel, and the traction rope is mounted on the outside of the slot.

[0009] Preferably, an expansion component is provided on the rotating frame, and the expansion component includes a pair of side grooves opened on the rotating frame, an electromagnet is provided between the two side grooves, and a magnetic plate is provided on the sliding card in the side groove.

[0010] Preferably, a connecting rod is provided at one end of the magnetic plate, the connecting rod is made of memory metal material, the free end of the connecting rod is connected to an expander, and the two expanders provided at the free ends of the two connecting rods are arranged opposite to each other.

[0011] Preferably, an orientation component is provided between the fixed column and the sleeve, and the orientation component includes a limit groove opened on the fixed column, and the sleeve is evenly provided with a plurality of limit grooves along the circumferential direction. An orientation block is slidingly provided in the limit groove, and a pair of the orientation blocks located in the same vertical direction are connected by an elastic clip.

[0012] Preferably, the protective pad can be compressed in the vertical direction, and a pair of connecting belts are connected to both ends of the protective pad, and each pair of connecting belts is connected by a fastening assembly.

[0013] Preferably, the fastening assembly includes a distance-adjusting belt connected to the free end of any one of the connecting belts, and the free end of the other connecting belt of the same pair is connected to a folding belt through an end plate, and the free end of the distance-adjusting belt is connected to the folding belt.

[0014] Preferably, a pair of distance-adjusting ropes are passed through the folding belt, and a distance plate is commonly connected to the two distance-adjusting ropes. A fixing plate is fixedly provided on the distance-adjusting belt, and the fixing plate and the distance plate are connected via a spring.

[0015] Preferably, the free ends of the two distance-adjusting ropes are commonly connected to a moving block, a guide groove is provided at the bottom end of the moving block, a guide rod is provided on the distance-adjusting belt, the guide rod is clamped in the guide groove, one end of the moving block is rotatably connected to a pair of clips through a torsion spring, both of the clips are clamped on the outside of the guide rod, and a control panel is provided on the clip.

[0016] The principle and beneficial effects of this technical solution:

[0017] (1) The stabilizing component provided in the present invention can compress the cartilage of the patient's knee joint. When the surgeon removes the severely damaged cartilage of the patient, the stabilizing component can compress and fix other cartilages that do not need to be removed, thereby reducing the displacement or shedding of other cartilages. Before using the stabilizing component, the pad is first fixed to the back of the patient's knee joint by the fastening component. After adjusting the angle of the rotating frame, the incisions on both sides of the patient's knee joint are expanded by the expansion component, so that the compression film provided on the inner side of the inflatable ring presses the cartilage on one side of the patient's knee joint. The compression film can be cut according to the previously confirmed position to remove part of the articular cartilage.

[0018] (2) The expansion assembly provided in the present invention can expand the surgical incisions on both sides of the patient's knee joint, making it convenient for the surgeon to operate the stabilization assembly. When using the expansion assembly, the elastic clamp must be pushed inward first to make the directional blocks connected at both ends of the elastic clamp slide along the limit groove until the directional blocks are separated from the limit grooves provided on the fixed column. At this time, the sleeve can be rotated along the fixed column to adjust the sleeve to an angle that does not affect the surgical operation, and then the elastic clamp can be released. The electromagnet is energized to repel the two magnetic plates, so that the magnetic plates can expand the patient's surgical incision through the expander connected by the connecting rod.

[0019] (3) The fastening assembly provided in the present invention can fix the protective pad. When the connecting belt needs to be tightened, the two clamps are first controlled separately by the two control panels provided on the two clamps to separate the two clamps and disengage them from the clamping of the guide rod. Then, the moving block connected to one end of the distance-adjusting rope can be pulled to slide along the guide rod. When the distance-adjusting rope moves, the distance plate fixedly connected thereto will move synchronously. Since the fixed plate and the distance plate are connected by a spring, the spring will be compressed when the distance plate moves, which facilitates the loosening of the fastening assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure after the present invention is disassembled;

[0022] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of area A in the middle;

[0023] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of the middle B area;

[0024] The figure marks in the drawings of the specification include: 1. pad; 2. connecting belt; 3. pressing film; 4. inflatable ring; 5. end plate; 6. clamping groove; 7. rotating wheel; 8. fixed shaft; 9. limiting groove; 10. magnetic plate; 11. expander; 12. connecting rod; 13. sleeve; 14. connecting arm; 15. clamping wheel; 16. rotating shaft; 17. connecting seat; 18. elastic clip; 19. fixed column; 20. electromagnet; 21. directional block; 22. side groove; 23. rotating frame; 24. distance adjustment belt; 25. spring; 26. distance adjustment rope; 27. folding belt; 28. guide rod; 29. ​​fixed plate; 30. guide groove; 31. control panel; 32. moving block; 33. distance plate; 34. clamp; 35. traction rope. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0026] Example:

[0027] like Figures 1 to 4 As shown, the present invention provides a device for minimally invasive repair of knee cartilage, including a pad 1, a stabilizing component is provided on the pad 1, a pair of rotating shafts 16 are provided on one side of the pad 1 through a fixing column 19, sleeves 13 are rotatably clamped on the outer sides of the two rotating shafts 16, and the two sleeves 13 are connected by a rotating frame 23, the stabilizing component includes a connecting seat 17 provided at both ends of the rotating frame 23, a clamping wheel 15 is rotatably connected to the connecting seat 17, a traction rope 35 is clamped on the outer side of the clamping wheel 15, a reel is provided on the rear side of the pad 1, the reel is connected to one end of the two traction ropes 35 respectively, and the free ends of the two traction ropes 35 are connected by an inflatable ring 4.

[0028] like Figure 1 As shown, the inflation ring 4 is filled with a solid gas with a low melting point, and the inner side of the inflation tube 4 is connected to a compression film 3, which is made of biological material and has a certain elasticity.

[0029] like Figure 2 and Figure 3 As shown, a fixed shaft 8 is provided on the connecting arm 14 , a rotating wheel 7 is rotatably mounted on the fixed shaft 8 , a slot 6 is provided on the rotating wheel 7 , and the traction rope 35 is mounted on the outside of the slot 6 .

[0030] like Figure 3 As shown, an expansion assembly is provided on the rotating frame 23 , and the expansion assembly includes a pair of side slots 22 opened on the rotating frame 23 , an electromagnet 20 is provided between the two side slots 22 , and a magnetic plate 10 is provided in the side slot 22 for sliding.

[0031] like Figure 3 As shown, a connecting rod 12 is provided at one end of the magnetic plate 10. The connecting rod 12 is made of memory metal material. The free end of the connecting rod 12 is connected to an expander 11. The two expanders 11 provided at the free ends of the two connecting rods 12 are arranged opposite to each other.

[0032] The expansion component can expand the surgical incisions on both sides of the patient's knee joint, making it convenient for the surgeon to operate the stabilization component. When using the expansion component, the elastic clip 18 must be pushed inward first to make the directional blocks 21 connected at both ends of the elastic clip 18 slide along the limit slot 9 until the directional blocks 21 are separated from the limit slot 9 provided on the fixed column 19. At this time, the sleeve 13 can be rotated along the fixed column 19 to adjust the sleeve 13 to an angle that does not affect the surgical operation and then release the elastic clip 18. After the elastic clip 18 is reset to fix the sleeve 13, the position of the expander 11 is adjusted through the connecting rod 12. After the expander 11 is placed in the patient's surgical incision, the electromagnet 20 is energized to make the electromagnet 20 repel the two magnetic plates 10, so that the magnetic plates 10 can expand the patient's surgical incision through the expander 11 connected by the connecting rod 12.

[0033] like Figure 3As shown, an orientation component is provided between the fixed column 19 and the sleeve 13. The orientation component includes a limit groove 9 opened on the fixed column 19. The sleeve 13 is evenly provided with multiple limit grooves 9 along the circumferential direction. An orientation block 21 is slidingly provided in the limit groove 9. A pair of orientation blocks 21 located in the same vertical direction are connected by an elastic clip 18.

[0034] like Figure 1 As shown, the protective pad 1 can be compressed in the vertical direction. A pair of connecting belts 2 are connected to both ends of the protective pad 1, and each pair of connecting belts 2 is connected by a fastening assembly.

[0035] like Figure 1 and Figure 4 As shown, the fastening assembly includes a distance-adjusting belt 24 connected to the free end of any connecting belt 2 , and the free end of the other connecting belt 2 of the same pair is connected to a folding belt 27 through an end plate 5 , and the free end of the distance-adjusting belt 24 is connected to the folding belt 27 .

[0036] like Figure 4 As shown, a pair of distance-adjusting ropes 26 are passed through the folding belt 27 , and a distance plate 33 is commonly connected to the two distance-adjusting ropes 26 . A fixing plate 29 is fixedly provided on the distance-adjusting belt 24 , and the fixing plate 29 and the distance plate 33 are connected via a spring 25 .

[0037] like Figure 2 and Figure 4 As shown, the free ends of the two spacing ropes 26 are commonly connected to a moving block 32, a guide groove 30 is provided at the bottom end of the moving block 32, a guide rod 28 is provided on the spacing belt 24, and the guide rod 28 is clamped in the guide groove 30, and one end of the moving block 32 is rotatably connected to a pair of clips 34 through a torsion spring, and the two clips 34 are clamped on the outside of the guide rod 28, and a control panel 31 is provided on the clip 34.

[0038] The fastening assembly can fix the protective pad 1. When the connecting belt 2 needs to be tightened, the two control panels 31 set on the two clips 34 are first used to respectively control the two clips 34 to separate the two clips 34 and disengage them from the clamping of the guide rod 28. Then the moving block 32 connected to one end of the distance-adjusting rope 26 can be pulled to slide the moving block 32 along the guide rod 28. When the distance-adjusting rope 26 moves, the distance plate 33 fixed thereon will move synchronously. Since the fixed plate 29 and the distance plate 33 are connected by a spring 25, the spring 25 will be compressed when the distance plate 33 moves, which facilitates the loosening of the fastening assembly.

[0039] The specific usage and function of this embodiment are as follows:

[0040] The stabilizing component provided in the present invention can compress the cartilage of the patient's knee joint. When the surgeon removes the severely damaged cartilage of the patient, the stabilizing component can compress and fix other cartilages that do not need to be removed, thereby reducing the displacement or shedding of other cartilages. Before using the stabilizing component, the pad 1 is first fixed to the back of the patient's knee joint through the fastening component, and after adjusting the angle of the rotating frame 23, the incisions on both sides of the patient's knee joint are expanded through the expansion component. Then, an endoscope is inserted to observe and confirm the cartilage that needs to be removed from the patient's knee joint. After confirmation, the instrument is guided to Guide one end of any traction rope through the incisions on both sides of the patient until the inflatable ring 4 used to connect the two traction ropes reaches one side of the patient's knee joint cartilage. The low-melting-point solid filled in the inflatable ring 4 will turn into gas, flattening the pressure film 3. Then, connect the free ends of the two traction ropes to the reel respectively, tighten the traction rope through the reel, and the traction rope will slide on the outside of the rotating wheel 7 clamped on the fixed shaft 8 until the pressure film 3 set on the inner side of the inflatable ring 4 presses the cartilage on one side of the patient's knee joint. The pressure film 3 can be cut according to the previously confirmed position to remove part of the articular cartilage.

[0041] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A device for minimally invasive repair of knee cartilage, characterized by: The invention comprises a protective pad (1), wherein a stabilizing component is provided on the protective pad (1), a pair of rotating shafts (16) are provided on one side of the protective pad (1) through a fixing column (19), sleeves (13) are rotatably clamped on the outer sides of the two rotating shafts (16), and the two sleeves (13) are connected through a rotating frame (23), the stabilizing component comprises a connecting seat (17) provided at both ends of the rotating frame (23), a clamping wheel (15) is rotatably connected to the connecting seat (17), a traction rope (35) is clamped on the outer side of the clamping wheel (15), and a reel is provided on the rear side of the protective pad (1), the reel is respectively connected to one end of the two traction ropes (35), and the free ends of the two traction ropes (35) are connected through an inflation ring (4).

2. The device for minimally invasive repair of knee cartilage according to claim 1, characterized in that: The inflation ring (4) is filled with a solid gas with a low melting point. The inner side of the inflation tube (4) is connected to a pressure film (3). The pressure film (3) is made of biological material and has a certain elasticity.

3. The device for minimally invasive repair of knee cartilage according to claim 2, characterized in that: A fixed shaft (8) is provided on the connecting arm (14), a rotating wheel (7) is rotatably mounted on the fixed shaft (8), a clamping slot (6) is provided on the rotating wheel (7), and the traction rope (35) is clamped outside the clamping slot (6).

4. The device for minimally invasive repair of knee cartilage according to claim 3, characterized in that: The rotating frame (23) is provided with an expansion component, which includes a pair of side grooves (22) opened on the rotating frame (23), an electromagnet (20) is provided between the two side grooves (22), and a magnetic plate (10) is provided in the sliding card inside the side groove (22).

5. The device for minimally invasive repair of knee cartilage according to claim 4, characterized in that: A connecting rod (12) is provided at one end of the magnetic plate (10), the connecting rod (12) is made of a memory metal material, the free end of the connecting rod (12) is connected to an expander (11), and the two expanders (11) provided at the free ends of the two connecting rods (12) are arranged opposite to each other.

6. The device for minimally invasive repair of knee cartilage according to claim 5, characterized in that: An orientation assembly is provided between the fixed column (19) and the sleeve (13), and the orientation assembly includes a limiting groove (9) provided on the fixed column (19). The sleeve (13) is provided with a plurality of limiting grooves (9) evenly along the circumferential direction. An orientation block (21) is provided in the limiting groove (9) for sliding engagement. A pair of the orientation blocks (21) located in the same vertical direction are connected by an elastic clip (18).

7. The device for minimally invasive repair of knee cartilage according to claim 6, characterized in that: The protective pad (1) can be compressed in a vertical direction. Both ends of the protective pad (1) are connected to a pair of connecting belts (2), and each pair of connecting belts (2) is connected by a fastening assembly.

8. The device for minimally invasive repair of knee cartilage according to claim 7, characterized in that: The fastening assembly comprises a spacing belt (24) connected to the free end of any one of the connecting belts (2); the free end of the other connecting belt (2) in the same pair is connected to a folding belt (27) via an end plate (5); and the free end of the spacing belt (24) is connected to the folding belt (27).

9. The device for minimally invasive repair of knee cartilage according to claim 8, characterized in that: A pair of distance-adjusting ropes (26) are passed through the folding belt (27), and a distance plate (33) is commonly connected to the two distance-adjusting ropes (26). A fixing plate (29) is fixedly provided on the distance-adjusting belt (24), and the fixing plate (29) and the distance plate (33) are connected via a spring (25).

10. The device for minimally invasive repair of knee cartilage according to claim 9, characterized in that: The free ends of the two pitch-adjusting ropes (26) are commonly connected to a moving block (32), a guide groove (30) is provided at the bottom end of the moving block (32), a guide rod (28) is provided on the pitch-adjusting belt (24), and the guide rod (28) is clamped in the guide groove (30), one end of the moving block (32) is rotatably connected to a pair of clamps (34) through a torsion spring, and the two clamps (34) are both clamped on the outside of the guide rod (28), and a control panel (31) is provided on the clamp (34).

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