Guiding device for minimally invasive spine surgery

Abstract

A guiding device for minimally invasive spine surgery comprises a supporting frame (10), a positioning mechanism (20) and a guiding plate (30). The supporting frame is detachably arranged on the operating bed. The positioning mechanism can be fixed to the supporting frame, and a plurality of fixing positions are arranged on the adjusting support in the direction perpendicular to a bed board of the operating bed. The guide plate is detachably arranged on the positioning mechanism. The guide plate is provided with a plurality of positioning holes (31) and two guide holes (33). The plurality of positioning holes are arranged along a first direction and are used for positioning vertebral pedicles and spinous processes of adjacent segments of the spine. The two guide holes are arranged along a first direction and respectively correspond to adjacent segments of the spine, so that a kirschner wire can be inserted into the guide holes in an operation; and the axes of the two guide holes are intersected. The positioning mechanism is fixed to the operating bed through the supporting frame, the guide plate is accurately placed through perspective positioning of the positioning mechanism, the operation time is shortened, and meanwhile the radiation amount borne by doctors and patients is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a guide device for minimally invasive spine surgery. Background Art

[0002] Unilateral double-channel spinal endoscopic surgery has gradually gained popularity due to its advantages such as clear and wide surgical field of view, less trauma, less bleeding and fast postoperative recovery. However, there are also some difficulties in the promotion of this procedure in clinical practice. First, in order to ensure the accuracy of the surgical channel, the surgeon needs to perform repeated X-ray fluoroscopy, which not only exposes both the doctor and the patient to large doses of radiation, but also leads to problems such as prolonged operation time and increased anesthesia risk. Secondly, the difficulty of repeated fluoroscopic positioning and channel establishment prolongs the surgeon's learning curve. Utility Model Content

[0003] The utility model aims to provide a spinal minimally invasive surgery guide device, which can efficiently determine the puncture point, reduce the radiation dose received by both the doctor and the patient during the operation, and improve the safety of the operation.

[0004] The utility model provides a spinal minimally invasive surgical guide device, which includes a support frame, a positioning mechanism and a guide plate. The support frame can be detachably arranged on an operating bed. The positioning mechanism can be fixed to the support frame, and has a plurality of fixed positions on an adjustment bracket in a direction perpendicular to the bed plate of the operating bed. The guide plate can be detachably arranged on the positioning mechanism. The guide plate has a plurality of positioning holes and two guide holes. The plurality of positioning holes are arranged in a first direction to locate the pedicles and spinous processes of adjacent segments of the spine. The two guide holes are arranged in a first direction and correspond to adjacent segments of the spine, respectively, for the insertion of Kirschner wires during surgery. The axes of the two guide holes intersect. The first direction is parallel to the extension direction of the spine.

[0005] The spinal minimally invasive surgery guide device provided by the utility model utilizes a support frame to fix a positioning mechanism to an operating table, and accurately places a guide plate through perspective positioning of the positioning mechanism, thereby shortening the operation time while reducing the radiation exposure of both doctors and patients, thereby improving the safety of the operation.

[0006] In another exemplary embodiment of the spinal minimally invasive surgery guide device, the plurality of positioning holes include four pedicle positioning holes and two spinous process vertex positioning holes. The two pedicle positioning holes are symmetrically arranged on both sides of one spinous process vertex positioning hole.

[0007] In another exemplary embodiment of the guide device for minimally invasive spine surgery, a shearing portion is formed in the guide plate between the two guide holes and in an area extending perpendicular to the first direction to the edge of the guide plate, wherein the thickness of the shearing portion is lower than the thickness of other parts of the guide plate.

[0008] In another exemplary embodiment of the guide device for minimally invasive spine surgery, the guide plate is formed with two guide grooves. The two guide grooves extend in a direction parallel to the bed plate and perpendicular to the first direction. The two guide grooves are respectively connected to the two guide holes and the edge of the guide plate.

[0009] In another exemplary embodiment of the guide device for minimally invasive spine surgery, the guide plate includes an upper guide plate, a lower guide plate and a connecting rod. The upper guide plate is provided with an upper connecting groove in a direction perpendicular to the first direction. The lower guide plate is fitted to the upper guide plate. The lower guide plate is provided with a lower connecting groove in a direction perpendicular to the first direction. The notch of the lower connecting groove is opposite to the notch of the upper connecting groove and is fitted to form a connecting groove. The connecting rod is inserted into the connecting groove to prevent the upper guide plate and the lower guide plate from separating.

[0010] In another exemplary embodiment of the spinal minimally invasive surgery guide device, the support frame includes a fixing seat and a support rod. The fixing seat is detachably connected to the operating bed. The support rod is connected to the fixing seat and is perpendicular to the bed board.

[0011] In another schematic embodiment of the guide device for minimally invasive spinal surgery, the positioning mechanism includes a crossbar, a frame, a development positioning net and a plurality of clamps. The crossbar is sleeved on the support rod and fixed against the support rod by screws passing through the crossbar. The frame is detachably connected to the crossbar and parallel to the bed board. The development positioning net is connected to the frame. The development positioning net is parallel to the bed board. Each clamp is arranged on the frame. The plurality of clamps are used to clamp and fix the guide plate to the frame.

[0012] In another exemplary embodiment of the guide device for minimally invasive spinal surgery, scales are provided on the edge of the frame.

[0013] In another exemplary embodiment of the guide device for minimally invasive spinal surgery, a scale is provided on the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following drawings are only used to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0015] Figure 1 The present invention is a structural schematic diagram of an illustrative embodiment of a guide device for minimally invasive spinal surgery.

[0016] Figure 2 The figure is a top view of a schematic structural diagram of a guide plate.

[0017] Figure 3 A schematic top view of another exemplary embodiment of a guide plate.

[0018] Figure 4 The figure is a schematic structural diagram of another exemplary implementation of the guide plate.

[0019] Description of symbols

[0020] 10 Support frame

[0021] 12 Fixed seat

[0022] 14 Support rod

[0023] 20 Positioning mechanism

[0024] 22 Crossbar

[0025] 24 Frame

[0026] 26 Development positioning network

[0027] 28 Clamping parts

[0028] 30 Guide plate

[0029] 31 Positioning hole

[0030] 312 Pedicle positioning hole

[0031] 314 Spinous process apex positioning hole

[0032] 32 Cutting section

[0033] 33 Guide hole

[0034] 34 Guide groove

[0035] 35 Upper guide plate

[0036] 351 Upper connection slot

[0037] 36 Lower guide plate

[0038] 361 Lower connection slot

[0039] 37 Connection slot

[0040] 38 Connecting rod

[0041] D1 First direction. DETAILED DESCRIPTION

[0042] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings. The same reference numerals in the drawings represent components with the same structure or similar structures but the same functions.

[0043] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0044] Figure 1 FIG. 1 is a schematic structural diagram of a schematic implementation of a spinal minimally invasive surgery guide device. Figure 1 As shown, the spinal minimally invasive surgery guide device includes a support frame 10, a positioning mechanism 20 and a guide plate 30. The support frame 10 is detachably mounted on the operating table, and the positioning mechanism 20 is mounted on the support frame 10 to mount the guide plate 30, so that the guide plate 30 is located above the operating table and parallel to the bed plate of the operating table and away from the patient, thereby avoiding the inability to completely disinfect the patient's surgical area during the operation.

[0045] like Figure 1 As shown, the support frame 10 includes a fixed seat 12 and a support rod 14. The fixed seat 12 is detachably connected to the operating table, so as to be adjusted to a corresponding position according to the specific conditions of the patient, so as to facilitate smooth operation. The support rod 14 is connected to the fixed seat 12 and is perpendicular to the bed board, and a scale is set on the support rod 14 to facilitate more accurate installation of the positioning mechanism 20 to ensure the accuracy of the operation.

[0046] The positioning mechanism 20 includes a crossbar 22, a frame 24, a developing positioning net 26 and several clamps 28. The crossbar 22 is sleeved on the support rod 14 and has multiple fixed positions on the support rod 14. In the present exemplary embodiment, the crossbar 22 is fixed against the support rod 14 by screws passing through it, but is not limited to this. During surgery, it can be adjusted to a corresponding fixed position according to the specific conditions of the patient. Specifically, since intraoperative X-ray fluoroscopy cannot directly measure the distance from the position of the surgical area to a plane 2 cm from the skin surface, in the present exemplary embodiment, the vertex of the posterior and lower edge of the vertebral body on the surgical segment is used as a reference point, and the distance from the reference point to a plane 2 cm from the skin surface is measured as a. According to the scale b of the intraoperative X-ray fluoroscopy reference point, the height of the crossbar 22 is further adjusted to a height of a+b, thereby ensuring the accuracy of the surgery.

[0047] The frame 24 is detachably connected to the crossbar 22 and is parallel to the bed board. The imaging positioning net 26 is connected to the frame 22 and is parallel to the bed board. Each clamping member 28 is provided on the frame 24 to clamp and fix the guide plate 30 to the frame 24. The edge of the frame 22 is provided with a scale. During the operation, only one fluoroscopy is required to adjust and accurately place the guide plate 30 according to the specific situation of the patient, and then the guide plate 30 is fixed by the clamping member 28. It can enable the operator to quickly and accurately determine the puncture point, shorten the operation time, and reduce the radiation exposure of the doctor and the patient.

[0048] Figure 2 FIG. 1 is a schematic structural diagram of a guide plate in a schematic embodiment. Figure 2As shown, the guide plate 30 has a plurality of positioning holes 31 and two guide holes 33. The guide plate 30 is designed based on the patient's preoperative imaging data, and an individualized 3D printed guide plate model is designed, and the printed entity is quickly formed.

[0049] Specifically, the plurality of positioning holes 31 include four pedicle positioning holes 312 and two spinous process vertex positioning holes 314, and the size and shape of the pedicle positioning holes 312 and the spinous process vertex positioning holes 314 are consistent with the size and shape of the spinous process and pedicle in the patient's spine anteroposterior film. The four pedicle positioning holes 312 and the two spinous process vertex positioning holes 314 are arranged along a first direction D1 (the first direction D1 is parallel to the extension direction of the spine), and the two pedicle positioning holes 312 are symmetrically arranged on both sides of a spinous process vertex positioning hole 314, so as to locate the pedicles and spinous processes of adjacent segments of the spine, so as to ensure the accuracy of the operation. The two guide holes 33 are arranged along the first direction D1 and correspond to adjacent segments of the spine respectively, so as to be used for the insertion of Kirschner wires during the operation, and the axes of the two guide holes 33 intersect.

[0050] like Figure 2 As shown, the guide plate 30 is located between the two guide holes 33 and has a shearing portion 32 formed in an area extending perpendicular to the first direction D1 to the edge of the guide plate 30. The thickness of the shearing portion 32 is lower than the thickness of other parts of the guide plate 30. During the operation, according to the specific situation after perspective, the guide plate 30 is accurately placed in the frame 24 and fixed with the clamp 28. The implantation depth of the Kirschner wire is calculated based on the preoperative imaging data, and it is implanted along the guide hole 33. After the Kirschner wire is inserted, the surgeon directly uses scissors to cut and remove the guide plate along the shearing portion 32, which is convenient and flexible to use, does not affect subsequent surgical operations, and shortens the operation time.

[0051] Figure 3 FIG. 2 is a schematic diagram of another exemplary embodiment of the guide plate. In this exemplary embodiment, the only difference from the spinal minimally invasive surgery guide device in the above embodiment is the different structure of the guide plate 30, and the other identical structures are not repeated here. Figure 3 As shown, the guide plate 30 is formed with two guide grooves 34. The two guide grooves 34 extend in a direction parallel to the bed plate and perpendicular to the first direction D1, and the two guide grooves 34 are respectively connected to the two guide holes 33 and the edge of the guide plate 30. After inserting the Kirschner wire, the surgeon can directly remove the guide plate 30 by pulling it to the opposite side, which does not affect the subsequent surgical operation and shortens the operation time.

[0052] Figure 4 FIG. 2 is a structural diagram of another exemplary embodiment of a guide plate. In this exemplary embodiment, the only difference from the spinal minimally invasive surgery guide device in the above embodiment is the different structure of the guide plate 30, and the other identical structures are not repeated here. Figure 4 As shown, the guide plate 30 includes an upper guide plate 35, a lower guide plate 36 and a connecting rod 38. An upper connecting groove 351 is formed on both side edges of the upper guide plate 35 in a direction perpendicular to the first direction D1. The lower guide plate 36 is attached to the upper guide plate 35, and a lower connecting groove 361 is formed on both side edges of the lower guide plate 36 in a direction perpendicular to the first direction D1. The notch of the lower connecting groove 361 is opposite to the notch of the upper connecting groove 351 and forms a connecting groove 37. Figure 4 As shown, in this exemplary embodiment, the cross section of the connecting groove 37 perpendicular to the first direction D1 is "H" shaped. The shape of the connecting rod 38 is adapted to the connecting groove 37 so as to be inserted into the connecting hole 37, thereby preventing the upper guide plate 35 and the lower guide plate 36 from being separated, and the connecting rod 38 still has a partial protrusion after being inserted into the connecting groove 37, so as to facilitate the extraction of the connecting rod 38 and the removal of the entire guide plate 30. Specifically, the upper guide plate 35 and the lower guide plate 36 are integrated by the connecting rod 38 before the operation, and the surgeon pulls out the connecting rods 38 on both sides after inserting the Kirschner wire. During the operation, the surgeon pulls out the connecting rods 38 on both sides after inserting the Kirschner wire to remove the guide plate, thereby shortening the operation time.

[0053] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0054] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present utility model. They are not intended to limit the scope of protection of the present utility model. Any equivalent implementation scheme or changes that do not deviate from the technical spirit of the present utility model, such as combination, division or repetition of features, should be included in the scope of protection of the present utility model.

Claims

1. A spinal minimally invasive surgery guide device, characterized in that: include: A support frame (10) detachably arranged on the operating table; a positioning mechanism (20) which can be fixed to the support frame (10) and has a plurality of fixed positions on the support frame (10) in a direction perpendicular to the bed plate of the operating bed; and A guide plate (30) is detachably arranged on the positioning mechanism (20), wherein the guide plate (30) comprises: A plurality of positioning holes (31), wherein the plurality of positioning holes (31) are arranged along a first direction (D1) to be used for positioning pedicles and spinous processes of adjacent segments of the spine; and Two guide holes (33), the two guide holes (33) are arranged along a first direction (D1) and respectively correspond to adjacent segments of the spine, so as to be used for inserting Kirschner wires during surgery, the axes of the two guide holes (33) intersect, and the first direction (D1) is parallel to the extension direction of the spine.

2. The spinal minimally invasive surgery guide device according to claim 1, characterized in that: The plurality of positioning holes (31) include four pedicle positioning holes (312) and two spinous process apex positioning holes (314), and the two pedicle positioning holes (312) are symmetrically arranged on both sides of one spinous process apex positioning hole (314).

3. The spinal minimally invasive surgery guide device according to claim 1, characterized in that: The guide plate (30) is located between the two guide holes (33) and has a shearing portion (32) formed in an area extending perpendicularly to the first direction (D1) to the edge of the guide plate (30), wherein the thickness of the shearing portion (32) is lower than the thickness of other portions of the guide plate (30).

4. The spinal minimally invasive surgery guide device according to claim 1, characterized in that: The guide plate (30) is formed with two guide grooves (34), the two guide grooves (34) extending in a direction parallel to the bed plate and perpendicular to the first direction (D1), and the two guide grooves (34) respectively communicating with the two guide holes (33) and the edge of the guide plate (30).

5. The spinal minimally invasive surgery guide device according to claim 1, characterized in that: The guide plate (30) comprises: An upper guide plate (35) having an upper connecting groove (351) formed in a direction perpendicular to the first direction (D1); a lower guide plate (36) which is attached to the upper guide plate (35); the lower guide plate (36) is provided with a lower connecting groove (361) in a direction perpendicular to the first direction (D1); the notch of the lower connecting groove (361) is opposite to the notch of the upper connecting groove (351) and is attached to form a connecting groove (37); and A connecting rod (38) is inserted into the connecting groove (37) to prevent the upper guide plate (35) and the lower guide plate (36) from separating.

6. The spinal minimally invasive surgery guide device according to claim 1, characterized in that: The support frame (10) comprises: a fixing seat (12) which is detachably connected to the operating bed; and A support rod (14) connected to the fixing seat (12) and perpendicular to the bed board.

7. The spinal minimally invasive surgery guide device according to claim 6, characterized in that: The positioning mechanism (20) comprises: a cross bar (22) which is sleeved on the support bar (14) and fixed against the support bar (14) by means of screws passing through the cross bar (22); a frame (24) which is detachably connected to the crossbar (22) and parallel to the bed board; a developing positioning net (26) connected to the frame (24), the developing positioning net (26) being parallel to the bed board; and A plurality of clamping members (28), each of the clamping members (28) being arranged on the frame (24), and the plurality of clamping members (28) being used to clamp and fix the guide plate (30) on the frame (24).

8. The spinal minimally invasive surgery guide device according to claim 7, characterized in that: The edge of the frame (24) is provided with scales.

9. The spinal minimally invasive surgery guide device according to claim 6, characterized in that: The support rod (14) is provided with a scale.

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