A guiding positioning device for knee joint puncture surgery

Abstract

The present invention belongs to the technical field of medical auxiliary equipment, and in particular, is a guiding and positioning device for knee joint puncture surgery. The following scheme is proposed, which specifically includes a base, a side support plate is provided on the side of the base, a leg support plate with an arc structure is fixedly installed on the top of the base, a horizontal translation bracket is fixedly installed on the top of the side support plate, and a support arm is installed above the translation bracket, a telescopic movable seat is fixedly installed at the front end of the support arm, and a patella positioning mechanism with an arc structure is installed in the middle of the telescopic movable seat. In the present invention, the surgical instrument is driven to move by pushing the electric push rod to perform injection or suction on the knee joint lesion, and then the patella of the knee joint is squeezed and displaced by the patella positioning mechanism, and the surgical instrument and the lesion position are accurately positioned by the guiding mechanism and the puncture guide mechanism, thereby completing the guidance and positioning operations of the knee joint puncture surgery and improving the efficiency of the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to a guiding and positioning device for knee joint puncture surgery. Background Art

[0002] The knee joint is the largest and most complex joint in the human body, composed of the femur, tibia, patella, meniscus, ligaments, tendons, and synovium. It is primarily responsible for weight bearing, pressure buffering, and enabling leg flexion and extension. Common problems include sports injuries, osteoarthritis, and synovitis, which can be prevented and improved through scientific exercise, weight control, and a healthy exercise regimen.

[0003] Knee arthrocentesis is a medical procedure that involves aseptically extracting or injecting fluid from the knee joint for the diagnosis or treatment of joint diseases. The core steps include positioning, disinfection, anesthesia, and puncture for fluid extraction / drug injection. Currently, most knee arthrocentesis procedures require medical staff to manually adjust the patient's leg position and manually compress the patella to move the patellar ligament laterally to expose the joint capsule below the patellar ligament. This means that knee arthrocentesis can only be performed with one hand, making it impossible to accurately locate the different positions and angles of the patient's knee joint, affecting the efficiency of the puncture procedure.

[0004] In view of this, the present invention provides a guiding and positioning device for knee joint puncture surgery to solve the technical problems existing in the above-mentioned prior art. Summary of the Invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes a guiding and positioning device for knee joint puncture surgery.

[0006] The present invention proposes a guiding and positioning device for knee joint puncture surgery, comprising a base, side support plates are provided on the sides of the base, an arc-shaped leg support plate is fixedly installed on the top of the base, a horizontally arranged translation bracket is fixedly installed on the top of the side support plate, and a support arm is installed above the translation bracket, a telescopic movable seat is fixedly installed at the front end position of the support arm, a patella positioning mechanism with an arc-shaped structure is installed in the middle of the telescopic movable seat, a guiding mechanism is installed on the side of the telescopic movable seat, and a puncture guide mechanism is slidably installed on the outer side surface of the guide mechanism.

[0007] Preferably in the present invention, the base includes a base bracket, a rectangular groove is provided on the side of the base bracket, and an assembly plate is installed inside the rectangular groove, and the end of the assembly plate is fixedly connected to the side support plate, and two rectangular tubes are provided at the end of the base bracket, and rectangular rods are installed inside the two rectangular tubes, and a foot pedal is installed between the ends of the two rectangular rods.

[0008] Preferably in the present invention, the translation bracket includes a U-shaped translation slide rail and a translation seat installed at the bottom of the support arm. The bottom of the translation slide rail is provided with a plurality of equally distributed locking holes, and the middle of the translation seat is provided with a locking bolt that can move up and down, and the bottom of the locking bolt is adapted to the locking hole.

[0009] In the present invention, preferably, a plurality of rotatably connected arm rods are provided in the middle of the support arm, and a damping ring and a locking bolt are installed between every two arm rods.

[0010] Preferably in the present invention, the telescopic movable seat includes a mounting block installed on the end of the support arm, and a guide slide rod is fixedly installed on the upper end of the mounting block, and a bidirectional threaded screw is rotatably installed on the lower end of the mounting block, and extension rods are slidably installed at both ends of the guide slide rod, and the middle part of the extension rod is threadedly connected to the bidirectional threaded screw.

[0011] Preferably in the present invention, the patella positioning mechanism includes a corrugated forming tube rotatably installed in the telescopic movable seat, and the outer sides of both ends of the corrugated forming tube are threaded with locking nuts fixedly matched with the telescopic movable seat, and a plurality of connecting plates are fixedly installed in the middle of the corrugated forming tube, and a ring is installed between two adjacent connecting plates through a damping ball hinge, and a patella extrusion assembly is fixedly installed in the middle of the ring.

[0012] Preferably in the present invention, the patella extrusion assembly includes a cylinder, and an extrusion rod is slidably installed inside the cylinder, and a Y-shaped groove is provided in the middle of the extrusion rod, an elastic part with a V-shaped structure is installed inside the Y-shaped groove, and a plurality of annular grooves adapted to the edge of the elastic part are provided inside the cylinder, an operating rod is installed at the end of the Y-shaped groove through a spring, and a trumpet-shaped expansion mouth adapted to the end of the elastic part is provided at the front end position of the operating rod, and an ellipsoidal structure extrusion part is installed at the front end position of the extrusion rod through a torsion spring rotation.

[0013] Preferably in the present invention, the guiding mechanism includes two guiding brackets rotatably connected to the telescopic movable seat, and the bottom of the guiding bracket is equipped with a leg strap, a guiding rod is fixedly installed between the ends of the two guiding brackets, and a positioning portion with an arc-shaped structure is provided in the middle of the guiding rod.

[0014] Preferably in the present invention, the puncture guide mechanism includes a puncture guide assembly and a puncture propulsion assembly, a damping portion that slides with the positioning portion is provided in the middle of the puncture guide assembly, and positioning rings that are locked and fixed with the positioning portion are screwed on both sides of the puncture guide assembly, a guide groove that slides with the puncture propulsion assembly is provided on the top of the puncture guide assembly, and a guide electric push rod that is snap-fitted with the puncture propulsion assembly is installed inside the guide groove.

[0015] Preferably in the present invention, the puncture propulsion assembly includes a puncture seat, and a propulsion chamber is provided at the upper end of the puncture seat, and a C-shaped groove is provided at the bottom of the puncture seat for snap-fitting with the end of the guide electric push rod, and a propulsion electric push rod is installed at the end of the puncture seat, and a U-shaped connecting fastener is provided at the end of the propulsion electric push rod.

[0016] Compared with the prior art, the present invention provides a guiding and positioning device for knee joint puncture surgery, which has the following beneficial effects:

[0017] The equipment can be quickly assembled according to the differences between the patient's left and right legs and the inside and outside of the knee joint, so as to quickly adapt to the patient's knee joint treatment. At the same time, during the knee joint puncture treatment, the patient can also maintain the bending and height position of the knee joint through the cooperation of the foot pedal and the guide mechanism to constrain the patient's knee joint, thereby making the patient's knee joint puncture gesture positioning more stable and accurate, saving manpower time to constrain the patient's knee joint. The patella positioning mechanism and the guide mechanism are both installed between the two extension rods. The distance between the two extension rods is adjusted by a bidirectional threaded screw, thereby adjusting the curvature of the patella positioning mechanism and the guide mechanism. When the corrugated molding tube bends, it drives the patellar compression assembly at the lower end to bend synchronously, quickly adapting to the patient's bent knee joint, and then the patient's patella is moved laterally by the patellar compression assembly, so that the knee joint cavity faces the puncture guide mechanism, and the knee joint cavity puncture position is fixed. When the guide mechanism is located on the side of the patient's knee joint, the leg straps at both ends are set on both sides of the patient's knee joint. When the puncture is in the correct position, the positioning portion of the arc-shaped structure surrounds the patient's knee joint, pushing the puncture guide mechanism to move outside the positioning portion. After determining the puncture angle and puncture position, the leg strap is tightened and fixed, and the puncture guide mechanism and the positioning portion are locked and fixed to determine the puncture angle and position, thereby avoiding displacement between the patient's knee joint and the puncture guide mechanism during the knee joint puncture operation. After the position between the puncture guide assembly and the positioning portion is fixed, the puncture advancement assembly is inserted into the guide groove, and the puncture advancement assembly can be pushed by the guide electric push rod to move toward the knee joint along the set trajectory. When the puncture advancement assembly moves under the action of the guide electric push rod, after the front end of the surgical instrument penetrates the lesion of the knee joint, the surgical instrument is driven to move by the push electric push rod to perform injection or suction on the knee joint lesion, and then the patella of the knee joint is squeezed and displaced by the patella positioning mechanism, and the surgical instrument and the lesion position are accurately positioned by the guide mechanism and the puncture guide mechanism, thereby completing the guidance and positioning operation of the knee joint puncture operation and improving the efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a guiding and positioning device for knee joint puncture surgery proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the base structure of a guiding and positioning device for knee joint puncture surgery proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the translation support structure of a guidance and positioning device for knee joint puncture surgery proposed by the present invention;

[0021] Figure 4 This is a partial structural diagram of a guiding and positioning device for knee joint puncture surgery proposed by the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of a telescopic movable seat of a guiding and positioning device for knee joint puncture surgery proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of the guiding mechanism structure of a guiding and positioning device for knee joint puncture surgery proposed by the present invention;

[0024] Figure 7 This is a schematic structural diagram of a patella positioning mechanism of a guiding and positioning device for knee joint puncture surgery proposed by the present invention;

[0025] Figure 8 This is a schematic structural diagram of a patellar compression assembly of a guidance and positioning device for knee joint puncture surgery proposed by the present invention;

[0026] Figure 9 This is a structural schematic diagram of the puncture guide mechanism of a guiding and positioning device for knee joint puncture surgery proposed by the present invention.

[0027] In the figure: 1 base, 11 base bracket, 12 rectangular groove, 13 rectangular tube, 14 foot pedal, 2 leg support plate, 3 patella positioning mechanism, 31 corrugated forming tube, 32 connecting plate, 33 collar, 34 cylinder, 35 annular groove, 36 extrusion rod, 37 extrusion member, 38 elastic member, 39 operating rod, 4 puncture guide mechanism, 41 puncture guide assembly, 42 guide groove, 43 guide electric push rod, 44 C-shaped groove, 45 puncture seat, 46 propulsion cavity, 47 connecting fastener, 48 propulsion electric push rod, 5 guide mechanism, 51 guide bracket, 52 leg strap, 53 guide rod, 54 positioning part, 6 telescopic movable seat, 61 mounting block, 62 bidirectional threaded screw, 63 guide slide rod, 64 extension rod, 7 support arm, 8 translation bracket, 81 translation slide rail, 82 translation seat, 83 locking bolt, 84 locking hole, 9 side support plate, 10 assembly plate. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] Reference Figure 1-9 A guiding and positioning device for knee joint puncture surgery includes a base 1, a side support plate 9 is provided on the side of the base 1, an arc-shaped leg support plate 2 is fixedly installed on the top of the base 1, a horizontally arranged translation bracket 8 is fixedly installed on the top of the side support plate 9, and a support arm 7 is installed above the translation bracket 8, a telescopic movable seat 6 is fixedly installed at the front end position of the support arm 7, a patella positioning mechanism 3 with an arc structure is installed in the middle of the telescopic movable seat 6, a guiding mechanism 5 is installed on the side of the telescopic movable seat 6, and a puncture guide mechanism 4 is slidably installed on the outer side surface of the guide mechanism 5.

[0030] As a further solution in the present invention, the base 1 includes a base bracket 11, a rectangular groove 12 is provided on the side of the base bracket 11, and an assembling plate 10 is installed inside the rectangular groove 12, and the end of the assembling plate 10 is fixedly connected to the side support plate 9, and two rectangular tubes 13 are provided at the end of the base bracket 11, and rectangular rods are installed inside the two rectangular tubes 13, and a foot pedal 14 is installed between the ends of the two rectangular rods. In the present invention, the equipment is modular in design, wherein the base 1 and the side support plate 9 are connected by plugging and unplugging the assembling plate 10. When in use, the equipment can be quickly assembled according to the differences between the patient's left and right legs and the inner and outer sides of the knee joint, and then quickly adapted to the patient's knee joint treatment. At the same time, during knee joint puncture treatment, the patient can also maintain the curvature and height position of the knee joint through the cooperation of the foot pedal 14 and the guide mechanism 5, restrain the patient's knee joint, and thus make the patient's knee joint puncture gesture positioning more stable and accurate, saving manpower time to restrain the patient's knee joint.

[0031] As a further solution in the present invention, the translation bracket 8 includes a U-shaped translation rail 81 and a translation seat 82 installed at the bottom of the support arm 7. The bottom of the translation rail 81 is provided with a plurality of equally distributed locking holes 84, and the middle of the translation seat 82 is provided with a locking bolt 83 that can move up and down, and the bottom of the locking bolt 83 is adapted to the locking hole 84. In the present invention, when the locking bolt 83 is lifted, the translation seat 82 slides freely inside the translation rail 81, and the support arm 7 slides left and right on the translation rail 81 through the translation seat 82 to determine the position between the patella positioning mechanism 3, the guide mechanism 5 and the puncture guide mechanism 4 and the patient's knee joint. Afterwards, the locking bolt 83 is pressed downward to cooperate with the locking hole 84 to lock the position of the patella positioning mechanism 3, the guide mechanism 5 and the puncture guide mechanism 4. The adjustment process is simple and convenient.

[0032] As a further solution in the present invention, a plurality of rotatably connected arm rods are provided in the middle of the support arm 7, and a damping ring and a locking bolt are installed between every two arm rods. In the present invention, the damping ring is provided between the arm rods in the middle of the support arm 7, so that the support arm 7 can stay at any height, and the position of the patella positioning mechanism 3, the guide mechanism 5 and the puncture guide mechanism 4 and the knee joint can be adjusted. After the adjustment is completed, the locking bolts are used to fix it, so that the support arm 7 forms a stable support structure.

[0033] As a further solution in the present invention, the telescopic movable seat 6 includes a mounting block 61 installed at the end of the support arm 7, and the upper end of the mounting block 61 is fixedly installed with a guide slide 63, and the lower end of the mounting block 61 is rotatably installed with a bidirectional threaded screw 62, and extension rods 64 are slidably installed at both ends of the guide slide 63, and the middle part of the extension rod 64 is screwed to the bidirectional threaded screw 62. In the present invention, the patella positioning mechanism 3 and the guide mechanism 5 are both installed between the two extension rods 64, and the distance between the two extension rods 64 is adjusted by the bidirectional threaded screw 62, and then the curvature of the patella positioning mechanism 3 and the guide mechanism 5 are adjusted to cooperate with the patient's knee joint bending movement, thereby accurately positioning the knee joint puncture angle, ensuring accurate puncture, shortening the operation time, and improving the patient's discomfort during knee joint puncture surgery.

[0034] As a further solution in the present invention, the patella positioning mechanism 3 includes a corrugated forming tube 31 rotatably installed in the telescopic movable seat 6, and the outer sides of the two ends of the corrugated forming tube 31 are screwed with locking nuts fixedly matched with the telescopic movable seat 6, and a plurality of connecting plates 32 are fixedly installed in the middle of the corrugated forming tube 31, and a ring 33 is installed between two adjacent connecting plates 32 through a damping ball hinge, and a patella extrusion component is fixedly installed in the middle of the ring 33. In the present invention, a plurality of interconnected patella extrusion components are provided in the patella positioning mechanism 3, and the patella The positions of both sides of the extrusion assembly can be rotationally adjusted through a damping ball hinge, and the top ends of multiple connecting plates 32 are connected through a corrugated forming tube 31. When the corrugated forming tube 31 bends, it drives the patellar extrusion assembly at the lower end to bend synchronously, quickly adapting to the patient's bent knee joint, and then moving the patient's patella to the side through the patellar extrusion assembly, so that the cystic cavity of the knee joint faces the puncture guide mechanism 4, and the cystic cavity puncture position of the knee joint is fixed, helping doctors to quickly and accurately locate the joint cystic cavity lesions and improve surgical efficiency.

[0035] As a further solution in the present invention, the patellar extrusion assembly includes a cylinder 34, and an extrusion rod 36 is slidably installed inside the cylinder 34, and a Y-shaped groove is provided in the middle of the extrusion rod 36, and a V-shaped elastic member 38 is installed inside the Y-shaped groove, and a plurality of annular grooves 35 are provided inside the cylinder 34 to match the edge of the elastic member 38. An operating rod 39 is installed at the end of the Y-shaped groove through a spring, and a trumpet-shaped expansion is provided at the front end of the operating rod 39 to match the end of the elastic member 38. The front end of the extrusion rod 36 is rotated by a torsion spring and is equipped with an ellipsoidal extrusion member 37. In the present invention, medical staff can drive the operation by pressing the operating rod 39 with their fingers. The elastic member 38 contracts inward, thereby pushing the extrusion member 37 close to the patient's knee joint position. After the finger leaves the operating lever 39, the elastic member 38 cooperates with the annular groove 35 to lock the position. When the extrusion member 37 pushes the patient's knee patella, the extrusion member 37 has an ellipsoidal structure, and the extrusion member 37 can rotate when under pressure. When the extrusion member 37 squeezes the patella side of the knee joint, the extrusion member 37 automatically rotates to squeeze into the gap between the patella and the joint capsule, moving the patella and patellar ligament to the other side, forming a V-shaped movement with the femur and tibia of the knee joint, opening the joint capsule for puncture treatment, avoiding patella repositioning during puncture treatment, and improving the efficiency of knee joint puncture surgery.

[0036] As a further solution in the present invention, the guiding mechanism 5 includes two guiding brackets 51 rotatably connected to the telescopic movable seat 6, and a leg strap 52 is installed at the bottom of the guiding bracket 51, a guiding rod 53 is fixedly installed between the ends of the two guiding brackets 51, and a positioning portion 54 with an arc structure is provided in the middle of the guiding rod 53. In the present invention, when the guiding mechanism 5 is located at the lateral position of the patient's knee joint, the leg straps 52 at both ends are sleeved on both sides of the patient's knee joint, and the positioning portion 54 with an arc structure surrounds the patient's knee joint, pushing the puncture guide mechanism 4 to move outside the positioning portion 54. After determining the puncture angle and puncture position, the leg strap 52 is tightened and fixed, and the puncture guide mechanism 4 and the positioning portion 54 are locked and fixed to determine the puncture angle and position, thereby avoiding displacement between the patient's knee joint and the puncture guide mechanism 4 during the knee joint puncture operation, thereby improving the guidance and positioning accuracy of the puncture operation.

[0037] As a further solution in the present invention, the puncture guide mechanism 4 includes a puncture guide component 41 and a puncture propulsion component. A damping part that slides with the positioning part 54 is provided in the middle of the puncture guide component 41, and positioning rings that are locked and fixed with the positioning part 54 are also screwed on both sides of the puncture guide component 41. A guide groove 42 that slides with the puncture propulsion component is provided on the top of the puncture guide component 41, and a guide electric push rod 43 that snaps with the puncture propulsion component is installed inside the guide groove 42. In the present invention, when the position between the puncture guide component 41 and the positioning part 54 is fixed, the puncture propulsion component is inserted into the guide groove 42, and the puncture propulsion component can be pushed along the set trajectory toward the knee joint by the guide electric push rod 43, so that the puncture position and angle can be accurately guided and positioned, thereby improving the efficiency and safety of the operation.

[0038] As a further solution in the present invention, the puncture propulsion assembly includes a puncture seat 45, and the upper end of the puncture seat 45 is provided with a propulsion cavity 46, the bottom of the puncture seat 45 is provided with a C-shaped groove 44 that is snap-fitted with the end of the guide electric push rod 43, the end of the puncture seat 45 is equipped with a propulsion electric push rod 48, and the end of the propulsion electric push rod 48 is provided with a U-shaped connecting fastener 47. In the present invention, the puncture surgical instrument is loaded into the propulsion cavity 46. When the puncture propulsion assembly is acted upon by the guide electric push rod 43, the front end of the surgical instrument penetrates the lesion of the knee joint, and the surgical instrument is driven to move by the propulsion electric push rod 48 to perform injection or suction on the knee joint lesion, and then the patella of the knee joint is squeezed and displaced by the patella positioning mechanism 3, and the surgical instrument and the lesion position are accurately positioned by the guide mechanism 5 and the puncture guide mechanism 4, thereby completing the guidance and positioning operations of the knee joint puncture surgery and improving the surgical efficiency.

[0039] During use, the device can be quickly assembled according to the differences between the patient's left and right legs and the inner and outer sides of the knee joint, thereby quickly adapting to the patient's knee joint treatment. At the same time, during knee joint puncture treatment, the patient can also maintain the bending and height position of the knee joint through the cooperation of the foot pedal 14 and the guide mechanism 5, constrain the patient's knee joint, and thus make the patient's knee joint puncture gesture positioning more stable and accurate, saving manpower time for constraining the patient's knee joint. The patella positioning mechanism 3 and the guide mechanism 5 are both installed between the two extension rods 64. The spacing between the two extension rods 64 is adjusted by the bidirectional threaded screw 62, thereby adjusting the curvature of the patella positioning mechanism 3 and the guide mechanism 5. When the corrugated molding tube 31 bends, it drives the patella squeezing assembly at the lower end to bend synchronously, quickly adapting to the patient's bent knee joint, and then moving the patient's patella to the side through the patella squeezing assembly, so that the cystic cavity of the knee joint faces the puncture guide mechanism 4, and the cystic cavity puncture position of the knee joint is fixed. , and when the guide mechanism 5 is located at the side of the patient's knee joint, the leg straps 52 at both ends are sleeved on both sides of the patient's knee joint, and the arc-shaped positioning portion 54 surrounds the patient's knee joint, pushing the puncture guide mechanism 4 to move outside the positioning portion 54. After determining the puncture angle and puncture position, the leg straps 52 are tightened and fixed, and the puncture guide mechanism 4 and the positioning portion 54 are locked and fixed to determine the puncture angle and position, thereby avoiding displacement between the patient's knee joint and the puncture guide mechanism 4 during the knee joint puncture operation. After the position between the puncture guide assembly 41 and the positioning portion 54 is fixed, the puncture propulsion assembly is inserted into the guide groove 42, and the puncture propulsion assembly can be pushed to move toward the knee joint along the set trajectory by the guide electric push rod 43. When the puncture propulsion assembly moves under the action of the guide electric push rod 43, after the front end of the surgical instrument pierces the lesion of the knee joint, the surgical instrument is driven to move by the propulsion electric push rod 48 to perform injection or suction on the knee joint lesion.

[0040] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A guiding and positioning device for knee joint puncture surgery, comprising a base (1), a side support plate (9) is provided on the side of the base (1), and a leg support plate (2) with an arc structure is fixedly installed on the top of the base (1), characterized in that: A horizontally arranged translation bracket (8) is fixedly mounted on the top of the side support plate (9), and a support arm (7) is mounted above the translation bracket (8). A telescopic movable seat (6) is fixedly mounted at the front end of the support arm (7), a patella positioning mechanism (3) with an arc structure is mounted in the middle of the telescopic movable seat (6), a guide mechanism (5) is mounted on the side of the telescopic movable seat (6), and a puncture guide mechanism (4) is slidably mounted on the outer side surface of the guide mechanism (5); The telescopic movable seat (6) includes a mounting block (61) mounted on the end of the support arm (7), and a guide slide (63) is fixedly mounted on the upper end of the mounting block (61), and a bidirectional threaded screw (62) is rotatably mounted on the lower end of the mounting block (61), and an extension rod (64) is slidably mounted at both ends of the guide slide (63), and the middle of the extension rod (64) is screwed to the bidirectional threaded screw (62), and the patella positioning mechanism (3) includes a corrugated molding tube (31) rotatably mounted in the telescopic movable seat (6), and the outer sides of the two ends of the corrugated molding tube (31) are screwed with locking nuts fixedly matched with the telescopic movable seat (6), and a plurality of connecting plates (32) are fixedly mounted on the middle of the corrugated molding tube (31), and the connection between two adjacent connecting plates (32) is fixed. A collar (33) is installed in the middle of the collar (33) through a damping ball hinge, and a patella extrusion assembly is fixedly installed in the middle of the collar (33). The patella extrusion assembly includes a cylinder (34), and an extrusion rod (36) is slidably installed inside the cylinder (34), and a Y-shaped groove is provided in the middle of the extrusion rod (36), and an elastic member (38) with a V-shaped structure is installed inside the Y-shaped groove, and a plurality of annular grooves (35) adapted to the edge of the elastic member (38) are provided inside the cylinder (34), and an operating rod (39) is installed at the end of the Y-shaped groove through a spring, and a trumpet-shaped expansion mouth adapted to the end of the elastic member (38) is provided at the front end of the operating rod (39), and an ellipsoidal extrusion member (37) is installed at the front end of the extrusion rod (36) through a torsion spring.

2. A guiding and positioning device for knee joint puncture surgery according to claim 1, characterized in that: The base (1) comprises a base bracket (11), a rectangular groove (12) is provided on the side of the base bracket (11), and an assembly plate (10) is installed in the interior of the rectangular groove (12), and the end of the assembly plate (10) is fixedly connected to the side support plate (9), and two rectangular tubes (13) are provided at the end of the base bracket (11), and rectangular rods are installed in the interior of the two rectangular tubes (13), and a foot pedal (14) is installed between the ends of the two rectangular rods.

3. A guiding and positioning device for knee joint puncture surgery according to claim 1, characterized in that: The translation bracket (8) comprises a U-shaped translation rail (81) and a translation seat (82) mounted on the bottom of the support arm (7). The bottom of the translation rail (81) is provided with a plurality of locking holes (84) distributed at equal distances, and a locking bolt (83) that can move up and down is mounted in the middle of the translation seat (82), and the bottom of the locking bolt (83) is adapted to the locking hole (84).

4. A guiding and positioning device for knee joint puncture surgery according to claim 3, characterized in that: A plurality of rotatably connected arm rods are provided in the middle of the support arm (7), and a damping ring and a locking bolt are installed between every two arm rods.

5. The guiding and positioning device for knee joint puncture surgery according to claim 1, characterized in that: The guide mechanism (5) comprises two guide brackets (51) rotatably connected to the telescopic movable seat (6), and a leg strap (52) is installed at the bottom of the guide bracket (51), a guide rod (53) is fixedly installed between the ends of the two guide brackets (51), and a positioning portion (54) with an arc structure is provided in the middle of the guide rod (53).

6. A guiding and positioning device for knee joint puncture surgery according to claim 5, characterized in that: The puncture guide mechanism (4) includes a puncture guide component (41) and a puncture propulsion component. A damping portion that slides with the positioning portion (54) is provided in the middle of the puncture guide component (41), and positioning rings that are locked and fixed with the positioning portion (54) are screwed on both sides of the puncture guide component (41). A guide groove (42) that slides with the puncture propulsion component is provided at the top of the puncture guide component (41), and a guide electric push rod (43) that is snap-fitted with the puncture propulsion component is installed inside the guide groove (42).

7. A guiding and positioning device for knee joint puncture surgery according to claim 6, characterized in that: The puncture propulsion assembly includes a puncture seat (45), and the upper end of the puncture seat (45) is provided with a propulsion chamber (46), the bottom of the puncture seat (45) is provided with a C-shaped groove (44) that is engaged with the end of the guide electric push rod (43), the end of the puncture seat (45) is equipped with a propulsion electric push rod (48), and the end of the propulsion electric push rod (48) is provided with a U-shaped connecting fastener (47).

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