Retraction device for spinal surgery

Abstract

The invention relates to the technical field related to medical instruments, in particular to a retractor for spinal surgery, which comprises a retractor mechanism mounting frame, a first retractor mechanism, a second retractor mechanism, a third retractor mechanism and a fourth retractor mechanism. The two ends of the retraction mechanism mounting frame are positioned on positioning seats on the two sides of an operating table through the first-stage connecting support and the second-stage connecting support respectively, the retraction mechanism mounting frame is located on the upper side of the back of a patient, the first retraction mechanism is positioned and mounted on the retraction mechanism mounting frame, and the second retraction mechanism is positioned on the retraction mechanism mounting frame. The structures of the second retraction mechanism and the first retraction mechanism are the same; the retractor mechanism mounting frame is arranged to be formed by combining the first arc-shaped frame body, the second arc-shaped frame body, the first hinge piece and the second hinge piece, so that the retractor mechanism mounting frame can be bent within a certain angle range, and the retractor mechanism mounting frame can be better attached to the back of a patient; therefore, the problem that the surgical difficulty of medical staff is increased due to the fact that the retraction mechanism is too high is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a retraction device for spinal surgery. Background Art

[0002] In spinal surgery, it is usually necessary to use a retractor or a pulling device to complete the surgical exposure step. The basic process of surgical exposure is: cut the skin on the back of the human body, use a retractor or a pulling device at the incision to pull the human tissue under the incision, so that the spinal part in the body is in an ideal exposure state, so that medical staff can perform surgery;

[0003] The existing Chinese patent document with the announcement number CN108201453B discloses a multi-directional distraction device for spinal surgery, which includes a fixing ring and a plurality of distraction components; the distraction component includes a distraction plate, a vertebral stabilization needle and a connector, the distraction plate is in the shape of an elongated strip and has a limiting hole penetrating the distraction plate along the length direction, the vertebral stabilization needle includes a threaded head at the front end and a clamping block at the rear end, the vertebral stabilization needle is inserted into the limiting hole, the clamping block is clamped against the distraction plate, and the threaded head passes through the limiting hole; the connector is connected with the fixing ring, and the distraction plate is connected with the connector through a pull rod;

[0004] However, the fixing ring of the above scheme is a whole, and the back of the human body is non-planar, which makes it unable to fit the back of the human body well, so that the fixing ring will cause a certain degree of interference to the operation of medical staff, and the fixing ring is open-type, which easily leads to the problem of insufficient positioning stability. Therefore, the present invention proposes a retraction device for spinal surgery to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a retraction device for spinal surgery to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a retraction device for spinal surgery, comprising:

[0007] A retractor mechanism mounting frame, both ends of which are positioned on the positioning seats on both sides of the operating table through a primary connecting bracket and a secondary connecting bracket, and the retractor mechanism mounting frame is located on the upper side of the patient's back;

[0008] A first retraction mechanism, wherein the first retraction mechanism is positioned and mounted on a retraction mechanism mounting frame;

[0009] a second retracting mechanism, wherein the second retracting mechanism is positioned on the retracting mechanism mounting frame and has the same structure as the first retracting mechanism;

[0010] a third retraction mechanism, wherein the third retraction mechanism is symmetrically arranged with the first retraction mechanism;

[0011] a fourth retraction mechanism, wherein the fourth retraction mechanism is symmetrically arranged with the second retraction mechanism;

[0012] The muscle tissue near the surgical opening on the patient's back is retracted in all directions by the first retractor, the second retractor, the third retractor and the fourth retractor.

[0013] Preferably, the retraction mechanism mounting frame includes a first arc-shaped frame body, a second arc-shaped frame body, a first hinge and a second hinge. The first arc-shaped frame body and the second arc-shaped frame body have the same structure. The first arc-shaped frame body and the second arc-shaped frame body are connected by a first hinge and a second hinge. The first hinge and the second hinge have the same structure, and the first hinge and the second hinge are both composed of a combination of a first connecting part and a second connecting part. The first connecting part and the second connecting part are rotationally connected by a first hinge axis.

[0014] Preferably, the first hinge and the second hinge are provided in a variety of models, and the lengths of the first hinge and the second hinge of different models are arranged in a gradually increasing trend.

[0015] Preferably, both ends of the first arc frame, both ends of the second arc frame, the outer end of the first connecting part, and the outer end of the second connecting part are all arranged in a stepped manner, and one end of the first arc frame, one end of the second arc frame and the outer end of the first connecting part are all provided with a docking groove, and the docking groove is a U-shaped groove, and a countersunk bolt hole is provided at the root position of the docking groove, and the other end of the first arc frame, the other end of the second arc frame and the outer end of the second connecting part are all provided with a first threaded hole, and the edge positions of the first arc frame, the second arc frame and the second connecting part are fixedly welded with an alignment column, the diameter value of the countersunk bolt hole is greater than the width value of the docking groove, and when the first arc frame, the second arc frame, the first hinge and the second hinge are actually docked, the alignment column is clamped in adjacent docking grooves, and adjacent countersunk bolt holes and the first threaded holes are relatively aligned, and adjacent countersunk bolt holes and the first threaded holes are aligned and connected by positioning bolts.

[0016] Preferably, the first retraction mechanism, the second retraction mechanism, the third retraction mechanism and the fourth retraction mechanism are all composed of a mounting member, an adjusting rod, a primary fastener and a retraction portion, the mounting member includes a mounting hoop, a primary positioning seat and a secondary positioning seat, the primary positioning seat and the secondary positioning seat are both provided with a primary positioning hole, the adjusting rod is installed in the primary positioning hole, and the outer end of the adjusting rod is bent to form a pull ring.

[0017] Preferably, the mounting hoop comprises a lower hoop body, an upper hoop body and an elastic connecting portion, and the lower hoop body, the upper hoop body and the elastic connecting portion are integrally formed, and a primary ear plate and a secondary ear plate are integrally formed at the ports of the lower hoop body and the upper hoop body, respectively. A secondary threaded hole is provided on the primary ear plate, and a secondary mounting hole is provided on the secondary ear plate. The primary positioning seat is fixedly welded to the side of the primary ear plate, and the secondary positioning seat is integrally formed with the side of the secondary ear plate.

[0018] Preferably, the first-level fastener includes a first-level screw, a first-level nut and a first-level screw handle, and the first-level screw, the first-level nut and the first-level screw handle are integrally formed, and when the first-level fastener is actually installed, the first-level screw passes through the secondary mounting hole and is screwed into the secondary threaded hole, and when the first-level fastener is actually tightened, the lower hoop body and the upper hoop body are tightly clamped on the retraction mechanism mounting frame, and the first-level positioning seat and the second-level positioning seat clamp the adjusting rod.

[0019] Preferably, the retraction part includes a mounting seat, a primary clamping seat, a secondary fastener, a secondary clamping seat, a tertiary clamping seat and a retraction plate, the mounting seat is welded to the inner end of the adjusting rod, a hinge seat is fixedly welded on the mounting seat, the primary clamping seat is rotatably connected to the hinge seat through a second hinge shaft, a secondary threaded hole is provided on the mounting seat, a secondary bolt hole is provided on the primary clamping seat, the secondary bolt hole is a semi-circular table hole body, the mounting seat and the primary clamping seat are both provided with secondary positioning holes, a secondary connecting shaft is integrally formed on the side wall of the secondary clamping seat, The secondary connecting shaft is installed in the secondary positioning hole, and a primary limiting ring and a secondary limiting ring are integrally formed on the secondary connecting shaft. The spacing value of the primary limiting ring and the secondary limiting ring matches the depth value of the secondary positioning hole. The secondary fastener includes a secondary screw, a secondary nut and a secondary screwing handle. The secondary screw, the secondary nut and the secondary screwing handle are integrally formed. When the secondary fastener is actually installed, the secondary screw passes through the secondary bolt hole and is screwed in the secondary threaded hole. The aperture of the secondary bolt hole is larger than the diameter of the secondary screw and smaller than the bottom diameter of the secondary nut.

[0020] Preferably, a secondary hinge seat is integrally formed at the end of the secondary clamping seat, and a tertiary hinge seat is integrally formed at the end of the tertiary clamping seat, the secondary hinge seat and the tertiary hinge seat are rotatably connected via a third hinge shaft, the retraction plate is arranged in an inverted L-shape, and a tertiary connecting shaft is integrally formed at the upper side end of the retraction plate, and a tertiary limiting ring is integrally formed at the upper side end of the tertiary connecting shaft, tertiary positioning holes are provided on the secondary clamping seat and the tertiary clamping seat, and the tertiary connecting shaft is installed in the tertiary positioning hole, when the secondary fastener is actually tightened, the mounting seat and the primary clamping seat clamp the secondary connecting shaft, and at this time, the side wall of the secondary nut forms a supporting effect on the side of the tertiary clamping seat, and at this time, the secondary clamping seat and the tertiary clamping seat clamp the tertiary connecting shaft.

[0021] Preferably, a first-level anti-slip pattern is integrally formed on the side wall of the first-level positioning hole, and a second-level anti-slip pattern is integrally formed on the side wall of the adjusting rod, the first-level anti-slip pattern is a semicircular ring structure with a semicircular cross-section, and the second-level anti-slip pattern is an annular convex structure with a semicircular cross-section, the first-level anti-slip pattern and the second-level anti-slip pattern are matched with each other, and when the first-level positioning seat and the second-level positioning seat clamp the adjusting rod, the first-level anti-slip pattern and the second-level anti-slip pattern are meshed with each other, the side wall of the second-level positioning hole is formed with a third-level anti-slip pattern, and the side wall of the second-level connecting shaft is formed with a fourth-level anti-slip pattern, the third-level anti-slip pattern and the fourth-level anti-slip pattern are both rod-shaped convex structures with a semicircular cross-section, and the third-level anti-slip pattern and the fourth-level anti-slip pattern are The anti-skid pattern is evenly arranged in a circle, the third-level anti-skid pattern and the fourth-level anti-skid pattern are matched, and when the mounting seat and the first-level clamping seat clamp the second-level connecting shaft, the third-level anti-skid pattern and the fourth-level anti-skid pattern are meshed with each other, and the side wall of the third-level positioning hole is formed with a fifth-level anti-skid pattern, and the side wall of the third-level connecting shaft is formed with a sixth-level anti-skid pattern. The fifth-level anti-skid pattern and the sixth-level anti-skid pattern are both rod-shaped protrusion structures with a semicircular cross-section, and the fifth-level anti-skid pattern and the sixth-level anti-skid pattern are evenly arranged in a circle, and the fifth-level anti-skid pattern and the sixth-level anti-skid pattern are matched, and when the second-level clamping seat and the third-level clamping seat clamp the third-level connecting shaft, the fifth-level anti-skid pattern and the sixth-level anti-skid pattern are meshed with each other.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. A spinal surgery retraction device is provided which is composed of a retraction mechanism mounting frame, a first retraction mechanism, a second retraction mechanism, a third retraction mechanism and a fourth retraction mechanism, and the retraction mechanism mounting frame is configured to be composed of a first arc-shaped frame body, a second arc-shaped frame body, a first hinge and a second hinge, so that the retraction mechanism mounting frame can be bent within a certain angle range, so that the retraction mechanism mounting frame can better fit the patient's back, thereby avoiding the retraction mechanism being too high and increasing the difficulty of medical staff in performing surgery;

[0024] 2. The first retraction mechanism, the second retraction mechanism, the third retraction mechanism and the fourth retraction mechanism are all configured to be composed of a mounting member, an adjusting rod, a primary fastener and a retraction portion, and the mounting member is configured to be composed of a mounting hoop, a primary positioning seat and a secondary positioning seat, and the mounting hoop is configured to be composed of a lower hoop body, an upper hoop body and an elastic connecting portion. When the primary fastener is tightened, the mounting hoop can be fixed on the retraction mechanism mounting frame and the adjusting rod can be positioned simultaneously, thereby effectively improving the convenience of the retraction device in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the retraction mechanism mounting frame of the present invention;

[0027] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0028] Figure 4 It is a schematic diagram of the structure of the first arc frame and the second arc frame of the present invention;

[0029] Figure 5 This is a schematic diagram of the first retraction mechanism of the present invention;

[0030] Figure 6 for Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0031] Figure 7 This is a schematic diagram of the inner structure of the mounting member of the present invention;

[0032] Figure 8 It is a schematic diagram of the outer structure of the mounting member of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the primary fastener of the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the adjusting rod of the present invention;

[0035] Fig.11for Fig.10 A magnified schematic diagram of the structure at C in the middle;

[0036] Fig.12 This is a schematic diagram of the structure of the primary clamping seat of the present invention;

[0037] Fig.13 It is a schematic diagram of the structure of the secondary fastener of the present invention;

[0038] Fig.14 This is a schematic diagram of the structure of the secondary clamping seat of the present invention;

[0039] Fig.15 This is a schematic diagram of the structure of the three-stage clamping seat of the present invention;

[0040] Fig.16 This is a schematic diagram of the structure of the distraction plate of the present invention;

[0041] Fig.17 This is a schematic diagram of the structure of the first hinge of the present invention;

[0042] Fig.18 This is a schematic structural diagram of the first connecting portion of the present invention;

[0043] Fig.19 It is a schematic diagram of the structure of the second connecting part of the present invention.

[0044] In the figure: a retraction mechanism mounting frame 1, a first retraction mechanism 2, a second retraction mechanism 3, a third retraction mechanism 4, a fourth retraction mechanism 5, a primary connecting bracket 6, a secondary connecting bracket 7, a first arc-shaped frame 8, a second arc-shaped frame 9, a first hinge 10, a second hinge 11, a first connecting portion 12, a second connecting portion 13, a first hinge shaft 14, a docking groove 15, a countersunk bolt hole 16, a first threaded hole 17, an alignment column 18, a positioning bolt 19, a mounting member 20, an adjusting rod 21, a primary fastener 22, a retraction portion 23, a pull ring 24, a mounting hoop 25, a primary positioning seat 26, a secondary positioning seat 27, a lower hoop body 28, an upper hoop body 29, an elastic connecting portion 30, a primary ear plate 31, a secondary ear plate 32, Secondary threaded hole 33, primary positioning hole 34, primary screw 35, primary nut 36, primary screwing handle 37, mounting seat 38, primary clamping seat 39, secondary fastener 40, secondary clamping seat 41, tertiary clamping seat 42, retraction plate 43, articulated seat 44, second articulated shaft 45, secondary threaded hole 46, secondary bolt hole 47, secondary positioning hole 48, secondary screw 49, secondary nut 50, secondary screwing handle 51, secondary connecting shaft 52, primary limiting ring 54, secondary limiting ring 55, secondary articulated seat 56, tertiary articulated seat 57, tertiary positioning hole 58, tertiary connecting shaft 59, tertiary limiting ring 60, secondary anti-slip texture 61, fourth anti-slip texture 62, sixth anti-slip texture 63, third articulated shaft 64. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in 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 creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-Figure 19 The present invention provides the following three preferred embodiments:

[0047] Embodiment 1: A retraction device for spinal surgery comprises a retraction mechanism mounting frame 1, a first retraction mechanism 2, a second retraction mechanism 3, a third retraction mechanism 4 and a fourth retraction mechanism 5, wherein both ends of the retraction mechanism mounting frame 1 are positioned on positioning seats on both sides of an operating table through a primary connecting bracket 6 and a secondary connecting bracket 7, respectively, and the retraction mechanism mounting frame 1 is located on the upper side of a patient's back, the first retraction mechanism 2 is positioned and mounted on the retraction mechanism mounting frame 1, the second retraction mechanism 3 is positioned on the retraction mechanism mounting frame 1, and the second retraction mechanism 3 has the same structure as the first retraction mechanism 2, the third retraction mechanism 4 is symmetrically arranged with the first retraction mechanism 2, the fourth retraction mechanism 5 is symmetrically arranged with the second retraction mechanism 3, and the muscle tissue near the surgical opening on the patient's back is retracted to all sides by the first retraction mechanism 2, the second retraction mechanism 3, the third retraction mechanism 4 and the fourth retraction mechanism 5.

[0048] The retraction mechanism mounting frame 1 includes a first arc frame 8, a second arc frame 9, a first hinge 10 and a second hinge 11. The first arc frame 8 and the second arc frame 9 have the same structure. The first arc frame 8 and the second arc frame 9 are connected by the first hinge 10 and the second hinge 11. The first hinge 10 and the second hinge 11 have the same structure, and the first hinge 10 and the second hinge 11 are both composed of a first connecting portion 12 and a second connecting portion 13. The first connecting portion 12 and the second connecting portion 13 are connected by a first hinge shaft 14. The traction device for spinal surgery is rotatably connected by setting a traction mechanism mounting frame 1, a first traction mechanism 2, a second traction mechanism 3, a third traction mechanism 4 and a fourth traction mechanism 5, and the traction mechanism mounting frame 1 is set to be composed of a first arc-shaped frame body 8, a second arc-shaped frame body 9, a first hinge 10 and a second hinge 11, so that the traction mechanism mounting frame 1 can be bent within a certain angle range, so that the traction mechanism mounting frame 1 can better fit the patient's back, thereby avoiding the traction mechanism being too high and increasing the difficulty of medical staff in performing surgery.

[0049] Embodiment 2: Based on Embodiment 1, the first hinge 10 and the second hinge 11 are provided in multiple models, and the lengths of the first hinge 10 and the second hinge 11 of different models are arranged in a gradually increasing trend. The first hinge 10 and the second hinge 11 of multiple models can be better adapted to patients of different body shapes.

[0050] The two ends of the first arc frame 8, the two ends of the second arc frame 9, the outer end of the first connecting portion 12, and the outer end of the second connecting portion 13 are all arranged in a stepped manner. One end of the first arc frame 8, one end of the second arc frame 9, and the outer end of the first connecting portion 12 are all provided with a docking groove 15, and the docking groove 15 is a U-shaped groove, and a countersunk bolt hole 16 is provided at the root position of the docking groove 15. The other end of the first arc frame 8, the other end of the second arc frame 9, and the outer end of the second connecting portion 13 are all provided with a first threaded hole 17, and the edge positions of the first arc frame 8, the second arc frame 9, and the second connecting portion 13 are fixedly welded with a positioning column 18, and the countersunk bolt hole 16 is provided at the root position of the docking groove 15. The diameter of the bolt hole 16 is greater than the width of the docking groove 15. When the first arc-shaped frame 8, the second arc-shaped frame 9, the first hinge 10, and the second hinge 11 are actually docked, the alignment column 18 is clamped in the adjacent docking groove 15, and the adjacent countersunk bolt holes 16 and the first threaded holes 17 are relatively aligned, and the adjacent countersunk bolt holes 16 and the first threaded holes 17 are aligned and connected by positioning bolts 19. The docking groove 15, the countersunk bolt hole 16, the first threaded hole 17, and the alignment column 18 are set, and the diameter of the countersunk bolt hole 16 is ensured to be greater than the width of the docking groove 15, so as to facilitate the docking installation between the structures while ensuring the docking stability.

[0051] Embodiment 3: On the basis of embodiment 2, the first retraction mechanism 2, the second retraction mechanism 3, the third retraction mechanism 4, and the fourth retraction mechanism 5 are all composed of a mounting member 20, an adjusting rod 21, a primary fastener 22, and a retraction portion 23. The mounting member 20 includes a mounting hoop 25, a primary positioning seat 26, and a secondary positioning seat 27. The primary positioning seat 26 and the secondary positioning seat 27 are both provided with a primary positioning hole 34. The adjusting rod 21 is installed in the primary positioning hole 34, and the outer end of the adjusting rod 21 is bent to form a pull ring 24. The mounting hoop 25 comprises a lower hoop body 28, an upper hoop body 29 and an elastic connecting portion 30. The lower hoop body 28, the upper hoop body 29 and the elastic connecting portion 30 are integrally formed. A primary ear plate 31 and a secondary ear plate 32 are integrally formed at the ends of the lower hoop body 28 and the upper hoop body 29 respectively. A secondary threaded hole 33 is provided on the primary ear plate 31, and a secondary mounting hole is provided on the secondary ear plate 32. The primary positioning seat 26 is fixedly welded to the side of the primary ear plate 31, and the secondary positioning seat 27 is integrally formed with the side of the secondary ear plate 32.

[0052] The primary fastener 22 includes a primary screw 35, a primary nut 36 and a primary screw handle 37. The primary screw 35, the primary nut 36 and the primary screw handle 37 are integrally formed. When the primary fastener 22 is actually installed, the primary screw 35 passes through the secondary mounting hole and is screwed into the secondary threaded hole 33. When the primary fastener 22 is actually tightened, the lower hoop body 28 and the upper hoop body 29 are tightly held on the retraction mechanism mounting frame 1, and the primary positioning seat 26 and the secondary positioning seat 27 clamp the adjusting rod 21. By adjusting the first retraction mechanism 2, the second retraction mechanism 3, and the third retraction mechanism 4 The fourth retraction mechanism 5 is configured to be composed of a mounting member 20, an adjusting rod 21, a primary fastener 22 and a retraction portion 23, and the mounting member 20 is configured to be composed of a mounting hoop 25, a primary positioning seat 26 and a secondary positioning seat 27, and the mounting hoop 25 is configured to be composed of a lower hoop body 28, an upper hoop body 29 and an elastic connecting portion 30, so that when the primary fastener 22 is tightened, the mounting hoop 25 can be fixed on the retraction mechanism mounting frame 1, and the adjusting rod 21 can be positioned simultaneously, thereby effectively improving the convenience of the retraction device in actual use.

[0053] Embodiment 4: On the basis of embodiment 3, the distraction portion 23 includes a mounting seat 38, a primary clamping seat 39, a secondary fastener 40, a secondary clamping seat 41, a tertiary clamping seat 42 and a distraction plate 43, the mounting seat 38 is welded to the inner end of the adjusting rod 21, a hinge seat 44 is fixedly welded on the mounting seat 38, the primary clamping seat 39 is rotatably connected to the hinge seat 44 through a second hinge shaft 45, a secondary threaded hole 46 is provided on the mounting seat 38, a secondary bolt hole 47 is provided on the primary clamping seat 39, and the secondary bolt hole 47 is a semi-circular table hole body, the mounting seat 38 and the primary clamping seat 39 are both provided with a secondary positioning hole 48, and a secondary connection is integrally formed on the side wall of the secondary clamping seat 41 The secondary connecting shaft 52 is installed in the secondary positioning hole 48, and the secondary connecting shaft 52 is integrally formed with a primary limiting ring 54 and a secondary limiting ring 55. The spacing value of the primary limiting ring 54 and the secondary limiting ring 55 matches the depth value of the secondary positioning hole 48. The secondary fastener 40 includes a secondary screw 49, a secondary nut 50 and a secondary screwing handle 51. The secondary screw 49, the secondary nut 50 and the secondary screwing handle 51 are integrally formed. When the secondary fastener 40 is actually installed, the secondary screw 49 passes through the secondary bolt hole 47 and is screwed into the secondary threaded hole 46. The aperture of the secondary bolt hole 47 is larger than the diameter of the secondary screw 49 and smaller than the bottom diameter of the secondary nut 50.

[0054] The end of the secondary clamping seat 41 is integrally formed with a secondary hinge seat 56, and the end of the tertiary clamping seat 42 is integrally formed with a tertiary hinge seat 57. The secondary hinge seat 56 and the tertiary hinge seat 57 are rotatably connected through a third hinge shaft 64. The retraction plate 43 is set in an inverted L shape, and the upper side end of the retraction plate 43 is integrally formed with a tertiary connecting shaft 59, and the upper side end of the tertiary connecting shaft 59 is integrally formed with a tertiary limiting ring 60. The secondary clamping seat 41 and the tertiary clamping seat 42 are both provided with tertiary positioning holes 58, and the tertiary connecting shaft 59 is installed in the tertiary positioning holes 58. When the secondary fastener 40 is actually tightened, the installation The seat 38 and the first-level clamping seat 39 clamp the second-level connecting shaft 52, and at this time, the side wall of the second-level nut 50 forms a supporting effect on the side of the tertiary clamping seat 42, and at this time, the second-level clamping seat 41 and the tertiary clamping seat 42 clamp the tertiary connecting shaft 59, and the retraction portion 23 is arranged to be composed of the mounting seat 38, the first-level clamping seat 39, the second-level fastener 40, the second-level clamping seat 41, the tertiary clamping seat 42 and the retraction plate 43, so as to facilitate the screwing adjustment of a single second-level fastener 40, and the retraction plate 43 can be adjusted in two axial directions, thereby effectively improving the adjustment convenience and flexibility of the retraction portion 23.

[0055] Embodiment 5: On the basis of embodiment 4, a first-level anti-skid pattern is integrally formed on the side wall of the first-level positioning hole 34, and a second-level anti-skid pattern 61 is integrally formed on the side wall of the adjusting rod 21. The first-level anti-skid pattern is a semicircular ring structure with a semicircular cross-section, and the second-level anti-skid pattern 61 is a ring-shaped convex structure with a semicircular cross-section. The first-level anti-skid pattern and the second-level anti-skid pattern 61 are matched with each other, and the first-level positioning seat 26 and the second-level positioning seat 27 clamp the adjusting rod 21. When tightened, the first-level anti-skid pattern and the second-level anti-skid pattern 61 are meshed, the side wall of the second-level positioning hole 48 is formed with a third-level anti-skid pattern, and the side wall of the second-level connecting shaft 52 is formed with a fourth-level anti-skid pattern 62. The third-level anti-skid pattern and the fourth-level anti-skid pattern 62 are both rod-shaped protrusion structures with semicircular cross-sections, and the third-level anti-skid pattern and the fourth-level anti-skid pattern 62 are evenly arranged with a circle, and the third-level anti-skid pattern and the fourth-level anti-skid pattern 62 are matched, and the mounting seat 38. When the primary clamping seat 39 clamps the secondary connecting shaft 52, the third-level anti-skid pattern and the fourth-level anti-skid pattern 62 are meshed and arranged, and the side wall of the third-level positioning hole 58 is formed with a fifth-level anti-skid pattern, and the side wall of the third-level connecting shaft 59 is formed with a sixth-level anti-skid pattern 63. The fifth-level anti-skid pattern and the sixth-level anti-skid pattern 63 are both rod-shaped protrusion structures with semicircular cross-sections, and the fifth-level anti-skid pattern and the sixth-level anti-skid pattern 63 are evenly arranged in a circle, and the fifth-level anti-skid pattern The fifth and sixth anti-slip patterns 63 are arranged to match each other, and when the secondary clamping seat 41 and the third clamping seat 42 clamp the third connecting shaft 59, the fifth and sixth anti-slip patterns 63 are arranged to mesh with each other. The arrangement of the first anti-slip pattern, the second anti-slip pattern 61, the third anti-slip pattern, the fourth anti-slip pattern 62, the fifth anti-slip pattern, and the sixth anti-slip pattern 63 can effectively improve the positioning stability between the structures, thereby improving the reliability during the operation.

[0056] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A retraction device for spinal surgery, characterized in that: include: A retractor mechanism mounting frame (1), wherein both ends of the retractor mechanism mounting frame (1) are respectively positioned on positioning seats on both sides of the operating table through a primary connecting frame (6) and a secondary connecting frame (7), and the retractor mechanism mounting frame (1) is located on the upper side of the patient's back; A first retraction mechanism (2), wherein the first retraction mechanism (2) is positioned and mounted on a retraction mechanism mounting frame (1); A second retraction mechanism (3), wherein the second retraction mechanism (3) is positioned on the retraction mechanism mounting frame (1), and the second retraction mechanism (3) has the same structure as the first retraction mechanism (2); A third retraction mechanism (4), wherein the third retraction mechanism (4) is symmetrically arranged with the first retraction mechanism (2); A fourth retraction mechanism (5), wherein the fourth retraction mechanism (5) is symmetrically arranged with the second retraction mechanism (3); The muscle tissue near the surgical opening on the patient's back is retracted in all directions by the first retracting mechanism (2), the second retracting mechanism (3), the third retracting mechanism (4) and the fourth retracting mechanism (5).

2. A retraction device for spinal surgery according to claim 1, characterized in that: The retraction mechanism mounting frame (1) comprises a first arc-shaped frame body (8), a second arc-shaped frame body (9), a first hinge (10) and a second hinge (11); the first arc-shaped frame body (8) and the second arc-shaped frame body (9) have the same structure; the first arc-shaped frame body (8) and the second arc-shaped frame body (9) are connected via a first hinge (10) and a second hinge (11); the first hinge (10) and the second hinge (11) have the same structure; the first hinge (10) and the second hinge (11) are both composed of a first connecting portion (12) and a second connecting portion (13); the first connecting portion (12) and the second connecting portion (13) are rotatably connected via a first hinge shaft (14).

3. A retraction device for spinal surgery according to claim 2, characterized in that: The first hinge (10) and the second hinge (11) are provided in a variety of models, and the lengths of the first hinge (10) and the second hinge (11) of different models are arranged in a gradually increasing trend.

4. A retraction device for spinal surgery according to claim 3, characterized in that: The two ends of the first arc-shaped frame (8), the two ends of the second arc-shaped frame (9), the outer end of the first connecting portion (12), and the outer end of the second connecting portion (13) are all arranged in a stepped manner; one end of the first arc-shaped frame (8), one end of the second arc-shaped frame (9), and the outer end of the first connecting portion (12) are all provided with a docking groove (15); the docking groove (15) is a U-shaped groove, and a countersunk bolt hole (16) is provided at the root position of the docking groove (15); the other end of the first arc-shaped frame (8), the other end of the second arc-shaped frame (9), and the outer end of the second connecting portion (13) are all provided with a first threaded hole (17); The edge positions of the first arc frame (8), the second arc frame (9) and the second connecting part (13) are fixedly welded to the alignment column (18), the diameter value of the countersunk bolt hole (16) is greater than the width value of the docking groove (15), and when the first arc frame (8), the second arc frame (9), the first hinge (10) and the second hinge (11) are actually docked, the alignment column (18) is clamped in the adjacent docking groove (15), and the adjacent countersunk bolt holes (16) and the first threaded holes (17) are arranged to be aligned, and the adjacent countersunk bolt holes (16) and the first threaded holes (17) are aligned and connected by positioning bolts (19).

5. The retraction device for spinal surgery according to claim 1, characterized in that: The first retraction mechanism (2), the second retraction mechanism (3), the third retraction mechanism (4) and the fourth retraction mechanism (5) are all composed of a mounting member (20), an adjusting rod (21), a primary fastener (22) and a retraction portion (23). The mounting member (20) comprises a mounting hoop (25), a primary positioning seat (26) and a secondary positioning seat (27). The primary positioning seat (26) and the secondary positioning seat (27) are both provided with a primary positioning hole (34). The adjusting rod (21) is installed in the primary positioning hole (34), and the outer end of the adjusting rod (21) is bent to form a pull ring (24).

6. A retraction device for spinal surgery according to claim 5, characterized in that: The mounting hoop (25) comprises a lower hoop body (28), an upper hoop body (29) and an elastic connecting portion (30); the lower hoop body (28), the upper hoop body (29) and the elastic connecting portion (30) are integrally formed; a primary ear plate (31) and a secondary ear plate (32) are integrally formed at the ends of the lower hoop body (28) and the upper hoop body (29); a secondary threaded hole (33) is provided on the primary ear plate (31); a secondary mounting hole is provided on the secondary ear plate (32); the primary positioning seat (26) is fixedly welded to the side of the primary ear plate (31); and the secondary positioning seat (27) is integrally formed with the side of the secondary ear plate (32).

7. A retraction device for spinal surgery according to claim 6, characterized in that: The primary fastener (22) comprises a primary screw rod (35), a primary nut (36) and a primary screw handle (37); the primary screw rod (35), the primary nut (36) and the primary screw handle (37) are integrally formed, and when the primary fastener (22) is actually installed, the primary screw rod (35) passes through the secondary installation hole and is screwed into the secondary threaded hole (33); when the primary fastener (22) is actually tightened, the lower hoop body (28) and the upper hoop body (29) are tightly held on the retraction mechanism mounting frame (1), and the primary positioning seat (26) and the secondary positioning seat (27) clamp the adjustment rod (21).

8. A retraction device for spinal surgery according to claim 7, characterized in that: The retraction portion (23) comprises a mounting seat (38), a primary clamping seat (39), a secondary fastener (40), a secondary clamping seat (41), a tertiary clamping seat (42) and a retraction plate (43); the mounting seat (38) is welded to the inner end of the adjusting rod (21); a hinge seat (44) is fixedly welded to the mounting seat (38); the primary clamping seat (39) is rotatably connected to the hinge seat (44) via a second hinge shaft (45); a secondary threaded hole (46) is provided on the mounting seat (38); a secondary bolt hole (47) is provided on the primary clamping seat (39); the secondary bolt hole (47) is a semi-circular table hole; the mounting seat (38) and the primary clamping seat (39) are both provided with secondary positioning holes (48); a secondary connecting shaft (52) is integrally formed on the side wall of the secondary clamping seat (41) The secondary connecting shaft (52) is installed in the secondary positioning hole (48), and a primary limiting ring (54) and a secondary limiting ring (55) are integrally formed on the secondary connecting shaft (52), and the spacing value of the primary limiting ring (54) and the secondary limiting ring (55) matches the depth value of the secondary positioning hole (48). The secondary fastener (40) includes a secondary screw rod (49), a secondary nut (50) and a secondary screwing handle (51), and the secondary screw rod (49), the secondary nut (50) and the secondary screwing handle (51) are integrally formed. When the secondary fastener (40) is actually installed, the secondary screw rod (49) passes through the secondary bolt hole (47) and is screwed into the secondary threaded hole (46), and the aperture of the secondary bolt hole (47) is larger than the diameter of the secondary screw rod (49) and smaller than the bottom diameter of the secondary nut (50).

9. A retraction device for spinal surgery according to claim 8, characterized in that: The end of the secondary clamping seat (41) is integrally formed with a secondary hinge seat (56), and the end of the tertiary clamping seat (42) is integrally formed with a tertiary hinge seat (57). The secondary hinge seat (56) and the tertiary hinge seat (57) are rotatably connected via a third hinge shaft (64). The retraction plate (43) is arranged in an inverted L-shape, and the upper side end of the retraction plate (43) is integrally formed with a tertiary connecting shaft (59), and the upper side end of the tertiary connecting shaft (59) is integrally formed with a tertiary limiting ring (60). The seat (41) and the third-level clamping seat (42) are both provided with third-level positioning holes (58), and the third-level connecting shaft (59) is installed in the third-level positioning holes (58). When the second-level fastener (40) is actually tightened, the mounting seat (38) and the first-level clamping seat (39) clamp the second-level connecting shaft (52), and at this time, the side wall of the second-level nut (50) forms a supporting effect on the side of the third-level clamping seat (42), and at this time, the second-level clamping seat (41) and the third-level clamping seat (42) clamp the third-level connecting shaft (59).

10. A retraction device for spinal surgery according to claim 9, characterized in that: A first-level anti-skid pattern is integrally formed on the side wall of the first-level positioning hole (34), and a second-level anti-skid pattern (61) is integrally formed on the side wall of the adjusting rod (21). The first-level anti-skid pattern is a semicircular ring structure with a semicircular cross section, and the second-level anti-skid pattern (61) is an annular convex structure with a semicircular cross section. The first-level anti-skid pattern and the second-level anti-skid pattern (61) are matched with each other, and when the first-level positioning seat (26) and the second-level positioning seat (27) clamp the adjusting rod (21), the first-level anti-skid pattern and the second-level anti-skid pattern (61) are meshed with each other. A third-level anti-skid pattern is integrally formed on the side wall of the second-level positioning hole (48), and a fourth-level anti-skid pattern (62) is integrally formed on the side wall of the second-level connecting shaft (52). The third-level anti-skid pattern and the fourth-level anti-skid pattern (62) are both rod-shaped convex structures with a semicircular cross section, and the third-level anti-skid pattern and the fourth-level anti-skid pattern (62) are A circle is arranged at an even circumference, the third-level anti-skid pattern and the fourth-level anti-skid pattern (62) are arranged in a matching manner, and when the mounting seat (38) and the first-level clamping seat (39) clamp the second-level connecting shaft (52), the third-level anti-skid pattern and the fourth-level anti-skid pattern (62) are arranged in meshing manner, the side wall of the third-level positioning hole (58) is formed with a fifth-level anti-skid pattern, and the side wall of the third-level connecting shaft (59) is formed with a sixth-level anti-skid pattern (63), The five-level anti-skid pattern and the six-level anti-skid pattern (63) are both rod-shaped protruding structures with a semicircular cross-section, and the five-level anti-skid pattern and the six-level anti-skid pattern (63) are evenly arranged in a circle. The five-level anti-skid pattern and the six-level anti-skid pattern (63) are matched and arranged, and when the second-level clamping seat (41) and the third-level clamping seat (42) clamp the third-level connecting shaft (59), the five-level anti-skid pattern and the six-level anti-skid pattern (63) are meshed with each other.

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