Nail rod fixing device in spine

Abstract

The utility model discloses a spinal internal fixation nail-rod device which comprises two connecting rods, the two connecting rods are symmetrically arranged front and back, a plurality of implantation nails are installed on the outer walls of the two connecting rods through fixing assemblies, and connecting assemblies are installed on the outer walls of the two connecting rods. According to the device for fixing the nail rods in the spine, the two connecting rods are far away from each other or close to each other, then the connecting base drives the square rod to slide in the inner wall of the square sleeve, and a positioning rod can penetrate through the square groove and the inner wall of the positioning groove in a penetrating mode and is screwed and fixed in the inner walls of the first circular groove and the first screw groove through a first hexagon socket screw; the length of the square sleeve and the length of the square rod are limited, so that when the whole device is used, the device can adapt to the spine widths of different patients to be adjusted and used, the overall adjusting mode is simple, after adjustment is completed, the overall firmness is sufficient, the looseness condition is prevented, the use range of the whole device is widened, and limitation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a spinal internal fixation nail rod device. Background Art

[0002] The posterior spinal screw-rod system is a commonly used spinal internal fixation system used to treat various spinal diseases, such as spinal fractures, degeneration, scoliosis, etc. The system consists of screws and titanium rods made of titanium alloy materials. The screws are implanted on the posterior side of the spine and then the titanium rods are connected to the screws to stabilize the spine. The advantages of the posterior spinal screw-rod system are that the surgical operation is relatively simple, the fixation effect is reliable, and the postoperative recovery is fast. However, it should be noted that this operation is an invasive operation and may cause certain complications, such as infection, bleeding, nerve damage, etc. The use of the posterior spinal screw-rod system requires strict control of the indications, and sufficient evaluation and preparation before the operation. Appropriate rehabilitation training is required after the operation to help patients restore function.

[0003] A spinal fixation nail rod is disclosed in the patent number CN202223407917.2, including an insertion nail and an insertion rod; the insertion rod includes a connecting rod and a cross-connecting rod, the connecting rod is arranged along the spine direction, the number of the connecting rods is greater than one, and the connecting rods are connected by a cross-connecting rod; the number of the insertion nails is greater than one, and multiple insertion nails are connected by the connecting rod, and the connecting rod and the insertion rod are integrally formed and fixedly connected, and the connecting rod has a curvature for matching the curvature of the spine. The insertion nail of the utility model is integrally formed and connected with the insertion rod, and the insertion rod has a curvature, which can not only determine the positions of multiple insertion nails at one time when inserting the nails, but also determine the nail placement position through multiple insertion nails, making the nail placement more accurate. Because the insertion rod is bent in advance, it can reduce intraoperative operations, reduce the internal stress generated by the rebound of the insertion rod, and increase the stability and service life of the insertion nail.

[0004] The above-mentioned device has certain shortcomings when used: the connecting rods of the above-mentioned device are connected by a cross-connecting rod, but since the length of the cross-connecting rod is fixed and the application width of the spine of different patients is different, there are limitations on the use of the device, resulting in the inability of the insertion nails and expansion nails to enter the accurate position.

[0005] Therefore, the utility model provides a spinal internal fixation nail rod device to solve the above problems. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a spinal internal fixation nail rod device to solve the above problems.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a spinal internal fixation nail rod device, comprising two connecting rods, the two connecting rods are symmetrically arranged front and back, the outer walls of the two connecting rods are both installed with a plurality of inserted nails through a fixing assembly, and the outer walls of the two connecting rods are installed with a connecting assembly;

[0008] The connecting assembly includes two connecting seats, which are symmetrically arranged front to back. A square sleeve is fixedly connected to the front wall of the connecting seat at the rear, a square groove is provided on the right wall of the front wall of the square sleeve, and a circular groove is provided on the left wall of the front part of the square sleeve. A square rod is slidably installed on the inner wall of the square sleeve, and a receiving seat is fixedly connected to the front end of the square rod. A positioning groove is provided on the outer wall of the square rod, and a positioning rod is inserted and installed on the inner wall of the square groove. A screw groove is provided inside the positioning rod, and a hexagon socket bolt is screwed on the inner wall of the screw groove.

[0009] Through the above technical solution, by setting the connecting component, the distance between the two connecting rods can be adjusted to match the spine lengths of different patients, thereby increasing the applicability of the entire device and making it more convenient to adjust.

[0010] Furthermore, the two connecting seats are fixedly connected to the corresponding outer walls of the connecting rods, the front wall of the receiving seat is fixedly connected to the corresponding outer walls of the connecting seats, the outer walls of the positioning rods are fitted with the corresponding inner walls of the positioning grooves, and the outer wall of the hexagon socket bolt is fitted with the inner wall of the circular groove.

[0011] Through the above technical solution, the positioning rod is inserted into the inner wall of the corresponding positioning groove, and is installed into the inner wall of the circular groove through the hexagon socket bolt.

[0012] Furthermore, the fixing assembly includes a mounting seat, the bottom wall of the mounting seat is provided with a receiving groove, the inner wall of the receiving groove is provided with a receiving seat, the bottom wall of the receiving seat is fixedly connected to the top of the inserted nail, the front wall of the receiving seat is provided with two screw grooves, and the front wall of the mounting seat is screwed with two hexagon socket bolts.

[0013] Through the above technical solution, the inserted nail drives the accommodating seat into the inner wall of the accommodating groove, and is installed into the second inner wall of the screw groove through two hexagon socket bolts.

[0014] Furthermore, the two hexagon socket bolts are threadedly connected through the mounting seat and the two screw grooves are threadedly connected to each other for installation.

[0015] Through the above technical solution, the hexagon socket bolts are threaded into the screw grooves and fixed to the receiving seat.

[0016] Furthermore, a mounting tube is fixedly connected to the top wall of the mounting seat, and through openings are provided on both left and right sides of the outer wall of the mounting tube, and the inner wall of the through opening fits with the outer wall of the corresponding connecting rod.

[0017] Through the above technical solution, the installation tube can slide on the outer wall of the connecting rod through the through-hole, thereby adjusting the installation position of the inserted nail.

[0018] Furthermore, a threaded line is provided on the top of the inner wall of the installation tube, a stud is screwed on the outer wall of the threaded line, a semicircular block is rotatably connected to the bottom end of the stud, an anti-skid pad is fixedly connected to the inner wall of the semicircular block, and the inner wall of the anti-skid pad is fitted with the outer wall of the connecting rod.

[0019] Through the above technical solution, the stud is installed by being screwed together with the thread line, and drives the semicircular block and the anti-slip pad to limit and fix the outer wall of the connecting rod.

[0020] Furthermore, the bottom wall of the connecting rod is in contact with the top wall of the mounting seat, and the bottom of the outer wall of the connecting rod is in a flat state.

[0021] Through the above technical solution, the bottom of the outer wall of the connecting rod is flat, which prevents the connecting rod from rotating.

[0022] Beneficial Effects

[0023] The utility model provides a spinal internal fixation nail rod device. Compared with the prior art, it has the following advantages:

[0024] Beneficial effects:

[0025] (1) The spinal internal fixation nail rod device moves two connecting rods away from or close to each other, and then the connecting seat drives the square rod to slide in the inner wall of the square sleeve. After the overall length of the square sleeve and the square rod is adjusted, the positioning rod can be inserted through the square groove and the inner wall of the positioning groove, and screwed and fixed to the circular groove and the inner wall of the screw groove by a hexagon socket bolt, thereby completing the length limitation of the square sleeve and the square rod. When the whole device is in use, it can be adjusted to suit the spinal width of different patients, and the overall adjustment method is simple. After the adjustment is completed, the overall firmness is sufficient to prevent loosening, thereby improving the use range of the whole device and preventing it from being limited.

[0026] (2) The spinal internal fixation nail rod device, when using the inserted nail, drives the receiving seat into the inner wall of the receiving groove, and is screwed and installed through the hexagon socket bolt through the second screw groove, and the sliding installation tube drives the fixing component to move on the connecting rod. After the position of the inserted nail is adjusted, the semicircular clamping block and the anti-skid pad are driven by the stud to enter the inner wall of the installation tube, so that the stud and the thread line are screwed and installed. At the same time, the semicircular clamping block and the anti-skid pad are fitted and limited with the outer wall of the connecting rod, so that a suitable inserted nail can be selected for installation and fixation, and the overall position of the inserted nail can be adjusted. When in use, it can be adjusted to a suitable position to be nailed into the spine, thereby preventing the problem of limited use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the front view of the external structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the internal structure of the fixing component of the utility model;

[0029] Figure 3 It is an exploded view of the internal structure of the fixing component and the connecting component of the utility model;

[0030] Figure 4 It is a bottom view of the internal structure of the fixing assembly of the utility model;

[0031] Figure 5 It is an enlarged view of the structure of the utility model A.

[0032] In the figure, 1, insert nail; 2, connecting rod; 3, fixing component; 31, mounting seat; 32, receiving seat; 33, two hexagon socket bolts; 34, two screw grooves; 35, mounting tube; 36, through-hole; 37, thread line; 38, stud; 39, semicircular block; 310, anti-slip pad; 311, receiving groove; 4, connecting component; 41, connecting seat; 42, square sleeve; 43, square rod; 44, positioning groove; 45, receiving seat; 46, square groove; 47, one hexagon socket bolt; 48, positioning rod; 49, one screw groove; 410, circular groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Embodiment 1:

[0035] See also Figure 1-5 A spinal internal fixation nail rod device comprises two connecting rods 2, the two connecting rods 2 are arranged symmetrically front and back, the outer walls of the two connecting rods 2 are both installed with a plurality of insertion nails 1 through a fixing assembly 3, and the outer walls of the two connecting rods 2 are installed with a connecting assembly 4;

[0036] The connecting assembly 4 includes two connecting seats 41, which are arranged symmetrically front and back. A square sleeve 42 is fixedly connected to the front wall of the connecting seat 41 at the rear, a square groove 46 is provided on the right wall of the front wall of the square sleeve 42, a circular groove 410 is provided on the left wall of the front part of the square sleeve 42, a square rod 43 is slidably installed on the inner wall of the square sleeve 42, a receiving seat 45 is fixedly connected to the front end of the square rod 43, a positioning groove 44 is provided on the outer wall of the square rod 43, a positioning rod 48 is inserted and installed on the inner wall of the square groove 46, a screw groove 49 is provided inside the positioning rod 48, and a hexagon socket head bolt 47 is screwed and installed on the inner wall of the screw groove 49;

[0037] In the embodiment of the utility model, the purpose of this arrangement is that the connection component 4 can adjust the distance between the two connection rods 2. The overall adjustment method is simple and convenient. After installation, it is sufficiently firm and can be adjusted according to the spinal width of different patients, thereby increasing the overall practicality and matching degree.

[0038] Embodiment 2:

[0039] See also Figure 1-5 , this embodiment provides a technical solution based on the first embodiment: the two connecting seats 41 are fixedly connected to the outer walls of the corresponding connecting rods 2, the front wall of the receiving seat 45 is fixedly connected to the outer wall of the corresponding connecting seat 41, the outer wall of the positioning rod 48 is fitted with the inner wall of the corresponding positioning groove 44, the outer wall of the hexagon socket bolt 47 is fitted with the inner wall of the circular groove 410, the fixing assembly 3 includes a mounting seat 31, the bottom wall of the mounting seat 31 is provided with a receiving groove 311, the inner wall of the receiving groove 311 is provided with a receiving seat 32, the bottom wall of the receiving seat 32 is fixedly connected to the top of the inserted nail 1, the front wall of the receiving seat 32 is provided with a screw groove 2 34, the front wall of the mounting seat 31 is screwed with a hexagon socket bolt 2 33, the second hexagon socket bolt 33 is screwed through the mounting seat 31 and the second screw groove 34 is screwed and installed with each other, the top wall of the mounting seat 31 is fixedly connected with a mounting cylinder 35, the left and right sides of the outer wall of the mounting cylinder 35 are provided with through holes 36, the inner wall of the through hole 36 is fitted with the corresponding outer wall of the connecting rod 2, the top of the inner wall of the mounting cylinder 35 is provided with a thread line 37, the outer wall of the thread line 37 is screwed with a stud 38, the bottom end of the stud 38 is rotatably connected with a semicircular block 39, the inner wall of the semicircular block 39 is fixedly connected with an anti-skid pad 310, the inner wall of the anti-skid pad 310 is fitted with the outer wall of the connecting rod 2, the bottom wall of the connecting rod 2 is fitted with the top wall of the mounting seat 31, and the bottom of the outer wall of the connecting rod 2 is in a flat state;

[0040] In the embodiment of the utility model, the purpose of this arrangement is that the setting of the fixing component 3 can adjust the distance of the insertion nail 1 on the outer wall of the connecting rod 2. When the insertion nail 1 is driven into the spine, the insertion nail 1 can be adjusted to select a suitable position, thereby improving the convenience of using the insertion nail 1.

[0041] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0042] During operation, when using the entire device, first move the two connecting rods 2 away from or close to each other, and then the connecting seat 41 drives the square rod 43 to slide in the inner wall of the square sleeve 42. After the overall length of the square sleeve 42 and the square rod 43 is adjusted, the positioning rod 48 can be inserted through the inner wall of the square groove 46 and the positioning groove 44, and screwed and fixed to the inner wall of the circular groove 410 and the screw groove 49 by the hexagon socket bolt 47, thereby completing the length limit of the square sleeve 42 and the square rod 43. When using the screw 1, the inserting nail 1 can first drive the receiving seat 32 to enter the inner wall of the receiving groove 311, and the hexagon socket bolt 33 can be screwed and installed through the screw groove 34, and the sliding installation cylinder 35 can drive the fixing component 3 to move on the connecting rod 2. After the position of the inserting nail 1 is adjusted, the semicircular block 39 and the anti-skid pad 310 can be driven to enter the inner wall of the installation cylinder 35 through the stud 38, so that the stud 38 and the thread line 37 are screwed and installed, and at the same time, the semicircular block 39 and the anti-skid pad 310 are fitted and limited with the outer wall of the connecting rod 2.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spinal internal fixation nail rod device, comprising two connecting rods (2), characterized in that: The two connecting rods (2) are arranged symmetrically in front and back, and the outer walls of the two connecting rods (2) are both installed with a plurality of insertion nails (1) through a fixing component (3), and the outer walls of the two connecting rods (2) are installed with a connecting component (4); The connecting assembly (4) comprises two connecting seats (41), the two connecting seats (41) are symmetrically arranged front and back, the front wall of the connecting seat (41) at the rear is fixedly connected with a square sleeve (42), the right wall of the front wall of the square sleeve (42) is provided with a square groove (46), the left wall of the front part of the square sleeve (42) is provided with a circular groove (410), the inner wall of the square sleeve (42) is slidably mounted with a square rod (43), the front end of the square rod (43) is fixedly connected with a receiving seat (45), the outer wall of the square rod (43) is provided with a positioning groove (44), the inner wall of the square groove (46) is plugged with a positioning rod (48), the interior of the positioning rod (48) is provided with a screw groove (49), and the inner wall of the screw groove (49) is screwed with a hexagon socket head bolt (47).

2. A spinal internal fixation nail rod device according to claim 1, characterized in that: The two connecting seats (41) are fixedly connected to the outer walls of the corresponding connecting rods (2), the front wall of the receiving seat (45) is fixedly connected to the outer wall of the corresponding connecting seat (41), the outer wall of the positioning rod (48) is fitted with the inner wall of the corresponding positioning groove (44), and the outer wall of the hexagon socket bolt (47) is fitted with the inner wall of the circular groove (410).

3. A spinal internal fixation nail rod device according to claim 1, characterized in that: The fixing assembly (3) comprises a mounting seat (31), the bottom wall of the mounting seat (31) is provided with a receiving groove (311), the inner wall of the receiving groove (311) is provided with a receiving seat (32), the bottom wall of the receiving seat (32) is fixedly connected to the top end of the inserted nail (1), the front wall of the receiving seat (32) is provided with a second screw groove (34), and the front wall of the mounting seat (31) is screwed with two hexagon socket head bolts (33).

4. A spinal internal fixation nail rod device according to claim 3, characterized in that: The second hexagon socket bolt (33) is threadedly connected to penetrate the mounting seat (31) and the second screw groove (34) is threadedly connected to each other for mounting.

5. A spinal internal fixation nail rod device according to claim 3, characterized in that: The top wall of the mounting seat (31) is fixedly connected with a mounting tube (35), and the left and right sides of the outer wall of the mounting tube (35) are both provided with through openings (36), and the inner wall of the through opening (36) is in contact with the outer wall of the corresponding connecting rod (2).

6. A spinal internal fixation nail rod device according to claim 5, characterized in that: A thread line (37) is provided at the top of the inner wall of the installation cylinder (35); a stud (38) is threadedly installed on the outer wall of the thread line (37); a semicircular clamping block (39) is rotatably connected to the bottom end of the stud (38); an anti-skid pad (310) is fixedly connected to the inner wall of the semicircular clamping block (39); and the inner wall of the anti-skid pad (310) is in contact with the outer wall of the connecting rod (2).

7. A spinal internal fixation nail rod device according to claim 1, characterized in that: The bottom wall of the connecting rod (2) is in contact with the top wall of the mounting seat (31), and the bottom of the outer wall of the connecting rod (2) is in a flat state.

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