Intervertebral expansion dilator

Abstract

The invention provides an intervertebral expansion dilator, and relates to the technical field of spine correction equipment. Comprising two distraction plates, each distraction plate comprises two distraction pieces and a supporting rod, racks are arranged on the opposite sides of the two distraction pieces, a gear is arranged between the two racks, and the gear is meshed with the two racks; the middle of the supporting rod is hollow, and a rotating rod is arranged at the hollow position and connected with the gear. Compared with the prior art, the intervertebral expansion supporting device is simple in structure, convenient to use, small in needed wound and capable of effectively achieving intervertebral expansion supporting.

Description

Technical Field

[0001] The present invention relates to the technical field of spinal correction equipment, and in particular to an intervertebral expansion and distraction device. Background Art

[0002] Spinal vertebral lesions are common and frequently occurring diseases that trouble people. The main surgical procedure for treating this disease is to remove the spinal lesions. When performing posterior spinal surgery in the orthopedic department, medical staff usually need to open the surgical incision to obtain a sufficient surgical field of view.

[0003] Most of the existing distraction methods require medical staff to manually distract and fix the vertebrae using tweezers, which not only increases the workload of medical staff, but also makes it easy for medical staff to be unable to provide effective support due to arm numbness after long-term support, thus affecting the progress of the operation; the existing intervertebral distraction device requires a large incision, and if the incision is small, the device cannot provide good support.

[0004] Therefore, there is an urgent need for an intervertebral expansion and distraction device to solve the above-mentioned problems during laparoscopic surgery. Summary of the invention

[0005] The object of the present invention is to provide an intervertebral expansion and distraction device, which has a simple structure, is easy to use, requires a small incision and can effectively achieve intervertebral expansion and support.

[0006] The embodiment of the present invention is achieved as follows:

[0007] An embodiment of the present application provides an intervertebral expansion spacer, which includes two expansion plates, the expansion plates include two expansion pieces and a support rod, racks are provided on opposite sides of the two expansion pieces, a gear is provided between the two racks, and the gear is meshed with the two racks; the middle part of the support rod is hollow, and a rotating rod is provided in the hollow part to connect with the gear.

[0008] In some embodiments of the present invention, a groove and a support plate are respectively provided on opposite sides of the two support plates, and the groove and the support plate are adapted in size and are slidably connected.

[0009] In some embodiments of the present invention, rubber pads are provided on the upper and lower sides of the support plate.

[0010] In some embodiments of the present invention, a vertical frame is further included, on which a vertical slide groove is provided, one of the two support rods is fixedly connected to the vertical frame, and the other is slidably connected to the vertical slide groove.

[0011] In some embodiments of the present invention, a rotating screw rod is further included. A limiting plate is arranged on the support rod. The rotating screw rod is threadedly connected to one limiting plate and sleeved with another limiting plate.

[0012] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0013] The existing intervertebral distraction device requires a large incision, and if the incision is small, the device cannot provide good support. The present invention provides an intervertebral expansion distractor, which includes two distraction plates, the distraction plates include two distraction pieces and a support rod, the two distraction pieces are provided with racks on opposite sides, a gear is provided between the two racks, and the gear is meshed with the two racks; the middle part of the support rod is hollow, and a rotating rod is provided in the hollow part to connect with the gear.

[0014] The present invention provides a spreading plate that can be spread to both sides, so that the device can be inserted into the patient's spinal surgery wound with a small wound and then spread the intervertebral space, thereby ensuring the intervertebral support area. A rotating rod is provided in the hollow part of the support rod and connected to the gear, so that medical staff can rotate the rotating rod to rotate the gear meshing with the two racks to control the expansion or contraction of the two spreading plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a front view of the propped-up plate according to an embodiment of the present invention;

[0017] Figure 2 A cross-sectional view of a propping sheet according to an embodiment of the present invention;

[0018] Figure 3 It is a cross-sectional view of a vertical frame according to an embodiment of the present invention.

[0019] Icons: 1. Opening piece; 2. Support rod; 3. Rotating rod; 4. Limiting plate; 5. Vertical frame; 6. Vertical slide; 7. Rotating screw; 8. Rack; 9. Gear; 10. Support plate; 11. Rubber pad; 12. Groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0022] Example:

[0023] Please refer to Figure 1-3 The present embodiment provides an intervertebral expansion spacer, which includes two expansion plates, and the expansion plates include two expansion pieces 1 and a support rod 2. Racks 8 are provided on opposite sides of the two expansion pieces 1, and a gear 9 is provided between the two racks 8, and the gear 9 is meshed with the two racks 8; the middle part of the support rod 2 is hollow, and a rotating rod 3 connected to the gear 9 is provided in the hollow part.

[0024] The existing intervertebral distraction device requires a large incision, and if the incision is small, the device cannot provide good support. The present invention provides a distraction plate that can be distracted to both sides, so that the device can be inserted into the patient's spinal surgery with a small incision and then distract the intervertebral space, thereby ensuring the intervertebral support area. A rotating rod 3 connected to a gear 9 is provided in the hollow of the support rod 2, so that medical staff can rotate the rotating rod 3 to rotate the gear 9 meshing with the two racks 8 to control the distraction or contraction of the two distraction plates 1.

[0025] In some embodiments of the present invention, a groove 12 and a support plate 10 are respectively provided on opposite sides of the two expansion pieces 1, and the sizes of the groove 12 and the support plate 10 are adapted and slidably connected. The provision of the groove 12 and the support plate 10 not only effectively increases the structural strength of the two expansion pieces 1, but also effectively ensures the contact area between them and the spine to avoid damage to them.

[0026] In some embodiments of the present invention, rubber pads 11 are provided on the upper and lower sides of the support plate 10. The provision of the rubber pads 11 can effectively protect the spine while increasing the expansion or contraction resistance of the two expansion sheets 1 to avoid unnecessary movement.

[0027] In some embodiments of the present invention, a vertical frame 5 is further included, and a vertical slide 6 is provided on the vertical frame 5. One of the two support rods 2 is fixedly connected to the vertical frame 5, and the other is slidably connected to the vertical slide 6. A rotating screw 7 is also included, and a limit plate 4 is provided on the support rod 2. The rotating screw 7 is threadedly connected to one limit plate 4 and sleeved with the other limit plate 4. Medical staff can effectively adjust the interval between the two spread plates by rotating the rotating screw 7, and the rotating screw 7 is threadedly connected to one limit plate 4, which prevents the positions of the two spread plates from moving due to spinal pressure.

[0028] In summary, an embodiment of the present invention provides an intervertebral expansion and dilator, which includes two dilating plates, and the dilating plates include two dilating sheets 1 and a support rod 2. Racks 8 are provided on opposite sides of the two dilating sheets 1, and a gear 9 is provided between the two gear racks 8, and the gear 9 is meshed with the two gear racks 8; the middle part of the support rod 2 is hollow, and a rotating rod 3 connected to the gear 9 is provided in the hollow part. By providing a dilating plate that can be expanded to both sides, the present invention allows the device to enter the intervertebral space after a relatively small incision in the patient's spinal surgery, thereby ensuring the intervertebral support area. A rotating rod 3 connected to the gear 9 is provided in the hollow part of the support rod 2, so that medical staff can rotate the rotating rod 3 to rotate the gear 9 meshed with the two gear racks 8 to control the expansion or contraction of the two dilating sheets 1.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intervertebral expansion spacer, characterized in that: It includes two support plates, and the support pieces include two support pieces and a support rod. Racks are arranged on opposite sides of the two support pieces, and a gear is arranged between the two racks, and the gear is meshed with the two racks. The middle part of the support rod is hollow, and a rotating rod is arranged in the hollow part to connect with the gear.

2. The intervertebral expansion and distraction device according to claim 1, characterized in that: A groove and a support plate are respectively arranged on opposite sides of the two support plates, and the groove and the support plate are adapted in size and are slidably connected.

3. The intervertebral expansion and distraction device according to claim 2, characterized in that: Rubber pads are arranged on the upper and lower sides of the support plate.

4. The intervertebral expansion and distraction device according to claim 3, characterized in that: It also includes a vertical frame, on which a vertical slide groove is arranged, one of the two support rods is fixedly connected to the vertical frame, and the other is slidably connected to the vertical slide groove.

5. The intervertebral expansion and distraction device according to claim 4, characterized in that: It also includes a rotating screw rod. A limiting plate is arranged on the support rod. The rotating screw rod is threadedly connected with one of the limiting plates and sleeved with the other limiting plate.

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