阅读说明：本技术 一种脊柱胸腰椎前路内固定装置 (Spine thoracolumbar anterior internal fixation device ) 是由 寸新华 冯程 杜映荣 杨永锐 寸晋骁 于 2021-07-26 设计创作，主要内容包括：本发明涉及医疗器械技术领域,具体揭示了一种脊柱胸腰椎前路内固定装置,包括两个连接板、连接套管、钻孔导向器以及临时固定钉,连接板的正面开设有前后贯通的螺纹孔且螺纹孔的内部通过螺纹连接有固定螺钉,连接板的内部分别开设有插槽和通槽,插槽的内部活动插接有连接杆,连接杆的表面活动插接有表面固定连接有螺纹杆的夹持块,连接板的正面固定连接有连接框,连接框的内部活动连接有裁切刀,裁切刀的正面转动连接有连接螺栓,连接套管的表面转动连接有转柄,连接套管套接于螺纹杆的表面,钻孔导向器的顶部固定连接有连接块；本发明能够对固定装置之间的距离进行调整,同时避免固定杆过长影响脊柱活动。(The invention relates to the technical field of medical instruments, and particularly discloses a spine thoracolumbar spine anterior internal fixation device which comprises two connecting plates, a connecting sleeve, a drilling guider and a temporary fixing nail, wherein the front surface of each connecting plate is provided with a front-back through threaded hole, the inside of each threaded hole is connected with a fixing screw through a thread, the inside of each connecting plate is respectively provided with a slot and a through groove, the inside of each slot is movably inserted with a connecting rod, the surface of each connecting rod is movably inserted with a clamping block fixedly connected with a threaded rod, the front surface of each connecting plate is fixedly connected with a connecting frame, the inside of each connecting frame is movably connected with a cutting knife, the front surface of each cutting knife is rotatably connected with a connecting bolt, the surface of each connecting sleeve is rotatably connected with a rotating handle, each connecting sleeve is sleeved on the surface of the threaded rod, and the top of each drilling guider is fixedly connected with a connecting block; the invention can adjust the distance between the fixing devices and simultaneously avoid the influence of overlong fixing rods on the movement of the spine.)

1. The utility model provides a way internal fixation device before backbone chest lumbar vertebrae, includes two connecting plates, adapter sleeve, drilling director and interim staple, its characterized in that: the front side of the connecting plate is provided with a front-back through threaded hole, the interior of the threaded hole is connected with a fixing screw through threads, the interior of the connecting plate is respectively provided with a slot and a through groove, the interior of the slot is movably inserted with a connecting rod, the surface of the connecting rod is movably inserted with a clamping block of which the surface is fixedly connected with a threaded rod, the front side of the connecting plate is fixedly connected with a connecting frame, the interior of the connecting frame is movably connected with a cutting knife, and the front side of the cutting knife is rotatably connected with a connecting bolt;

the surface of the connecting sleeve is rotatably connected with a rotating handle, and the connecting sleeve is sleeved on the surface of the threaded rod;

the top of the drilling guider is fixedly connected with a connecting block.

2. The internal fixation device for the anterior approach of the thoracolumbar spine of the spine of claim 1, wherein: the positions, close to the top and the bottom, of the front face of the connecting plate are respectively connected with positioning bolts through threads, and the back faces of the two positioning bolts penetrate through the front face of the connecting plate and are located in the slots and the through grooves.

3. The internal fixation device for the anterior approach of the thoracolumbar spine of the spine of claim 1, wherein: the connecting sleeve is connected with the connecting plate through a mounting bolt, and the threaded rod penetrates through the left side and the right side of the connecting sleeve and the rotating handle and is connected with the rotating handle through threads.

4. The internal fixation device for the anterior approach of the thoracolumbar spine of the spine of claim 1, wherein: the front of the clamping block is connected with a limiting bolt through threads, and the back of the limiting bolt penetrates through the front of the clamping block and is attached to the surface of the connecting rod.

5. The internal fixation device for the anterior approach of the thoracolumbar spine of the spine of claim 1, wherein: the position of the connecting frame corresponds to the position of the through groove, the connecting rod is movably inserted in the connecting frame, and the front face of the connecting bolt penetrates through the front face of the connecting frame and is connected with the connecting frame through threads.

6. The internal fixation device for the anterior approach of the thoracolumbar spine of the spine of claim 1, wherein: the shape and the size of the bottom of the drilling guide device are matched with those of the threaded hole, and threads are arranged on the surface of the drilling guide device and close to the bottom of the drilling guide device and are connected with the threaded hole through the threads.

7. The internal fixation device for the anterior approach of the thoracolumbar spine of the spine of claim 1, wherein: the top and the bottom that drilling director was all run through in the inside of drilling director and interim staple swing joint in the top and the bottom of interim staple, interim staple surface just is close to the position department at top and is seted up the screw thread and be connected with the connecting block through the screw thread.

8. The internal fixation device for the anterior approach of the thoracolumbar spine of the spine of claim 1, wherein: the left and right sides fixedly connected with connecting pipe of drilling director, the bottom open position of connecting pipe is located the bottom of drilling director.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a spinal thoracolumbar anterior internal fixation device.

Background

With the development of the times, the living quality of people is higher and higher, meanwhile, the living habits and living styles of people are changed silently, along with the change of habits of people, spine fractures, tumors, infections and various degenerative diseases are frequently generated, the most effective mode for spine diseases is still biased to surgical treatment at present, the spine diseases are frequently accompanied with the deformation of spines, the deformed spines can press peripheral blood vessels to cause insufficient blood and oxygen supply, and therefore more serious consequences are caused, and therefore in the process of spine surgery, the shapes of the spines need to be fixed to stabilize the shapes of the spines.

The current spine surgery mainly comprises an anterior way type and a posterior way type, but the hyperopia diseases of thoracolumbar vertebrae such as tumor, intervertebral disc protrusion or ossification, vertebral body tuberculosis and the like are difficult to achieve satisfactory treatment effect without anterior treatment, so the anterior treatment is an important means for spinal treatment.

When carrying out the anterior approach treatment, fixing method commonly used to the backbone mainly fixes through the bone staple, and very coarse and can't adjust the distance between the bone staple, has increased the degree of difficulty of operation, is fixing the backbone simultaneously, often can use the fixed stick, nevertheless is fixing the time to the backbone at the utilization fixed stick sometimes, and the length overlength of fixed stick causes the hindrance to the normal activity of backbone easily.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the internal fixing device for the thoracolumbar spine anterior approach, which has the advantages of being capable of adjusting the fixed distance, avoiding the overlong fixing rod for fixing from obstructing the normal movement of the spine and the like, and solves the problems that the fixed distance cannot be adjusted and the overlong fixing rod for fixing obstructs the normal movement of the spine.

The internal fixing device for the thoracolumbar spine anterior path comprises two connecting plates, a connecting sleeve, a drilling guider and a temporary fixing nail, wherein the front side of each connecting plate is provided with a threaded hole which is communicated from front to back, the inside of each threaded hole is connected with a fixing screw through threads, the inside of each connecting plate is respectively provided with a slot and a through slot, the inside of each slot is movably inserted with a connecting rod, the surface of each connecting rod is movably inserted with a clamping block fixedly connected with a threaded rod, the front side of each connecting plate is fixedly connected with a connecting frame, the inside of each connecting frame is movably connected with a cutting knife, the front side of each cutting knife is rotatably connected with a connecting bolt, the surface of each connecting sleeve is rotatably connected with a rotating handle, each connecting sleeve is sleeved on the surface of the threaded rod, and the top of each drilling guider is fixedly connected with a connecting block.

Through the design of the technical scheme, when the spine of a patient can be fixed, the distance between the fixing devices can be conveniently adjusted, and meanwhile, the normal movement of the spine caused by the influence of the overlong length of the connecting rod for fixing is prevented.

As a further improvement of the invention, the positions of the front side of the connecting plate, which are close to the top and the bottom, are respectively connected with positioning bolts through threads, and the back sides of the two positioning bolts penetrate through the front side of the connecting plate and are positioned inside the slot and the through groove.

Through the design of the technical scheme, after the connecting rod is inserted into the slot and the inside of the through slot, the position of the connecting rod can be fixed by rotating the positioning bolt, so that the positions of the two connecting plates are fixed.

As a further improvement of the invention, the connecting sleeve is connected with the connecting plate through a mounting bolt, and the threaded rod penetrates through the left side and the right side of the connecting sleeve and the rotating handle and is connected with the rotating handle through threads.

Through the design of the technical scheme, the connecting mode between the connecting sleeve and the connecting plate is limited, the connecting sleeve is convenient to take down from the connecting plate, and the rotating handle is rotated to drive the threaded rod to move, so that the position of the clamping block is adjusted.

As a further improvement of the invention, the front surface of the clamping block is connected with a limiting bolt through threads, and the back surface of the limiting bolt penetrates through the front surface of the clamping block and is attached to the surface of the connecting rod.

Through the design of the technical scheme, the connecting rod can be clamped and fixed in the clamping block under the action of the limiting bolt.

As a further improvement of the invention, the position of the connecting frame corresponds to the position of the through groove, the connecting rod is movably inserted in the connecting frame, and the front surface of the connecting bolt penetrates through the front surface of the connecting frame and is connected with the connecting frame through threads.

Through the design of the technical scheme, the position of the connecting frame is limited, and meanwhile, the cutting knife can be driven to move by rotating the connecting bolt, so that the connecting rod is cut by the cutting knife.

As a further improvement of the invention, the shape and size of the bottom of the drilling guide are matched with the shape and size of the threaded hole, and the surface of the drilling guide, which is close to the bottom, is provided with threads and is connected with the threaded hole through the threads.

Through the design of the technical scheme, the position of the drilling guider can be fixed by utilizing the threaded connection between the drilling guider and the threaded hole, and drilling operation is conveniently carried out.

As a further improvement of the invention, the temporary fixing nail is movably connected inside the drill guide, the top and the bottom of the temporary fixing nail penetrate through the top and the bottom of the drill guide, and the surface of the temporary fixing nail is provided with threads at a position close to the top and is connected with the connecting block through the threads.

Through the design of the technical scheme, the drilling operation can be further conveniently carried out under the effect of the threaded connection between the temporary fixing nail and the connecting block.

As a further improvement of the invention, the left side and the right side of the drilling guide are fixedly connected with connecting pipes, and the bottom end opening positions of the connecting pipes are positioned at the bottom of the drilling guide.

Through the design of the technical scheme, after the connecting pipe is externally connected with the medical air draft device, broken bone fragments generated by drilling can be sucked out of the patient body in the drilling process, and the broken bone fragments are prevented from remaining in the patient body.

Compared with the prior art, the invention has the following beneficial effects:

1. in the using process of the device, the connecting rod can be tightened through the limiting bolt, then the rotating handle is rotated, the threaded rod is driven to move through the threaded connection between the rotating handle and the threaded rod, so that the connecting rod is pulled by the clamping block and the threaded rod, the distance between the two connecting plates is mutually shortened, the fixed distance is adjusted, and meanwhile, the mounting bolt on the connecting sleeve is matched, so that after the device is mounted, the connecting sleeve can be taken down through the mounting bolt, the size of the device is further reduced, and the discomfort of a patient caused by the overlarge size of the device is prevented.

2. When the spine fixing device is used, the connecting rod can simultaneously penetrate through the through groove and the connecting frame, after fixing is completed, the connecting bolt only needs to be rotated, the connecting bolt is used for driving the cutting knife to move, the connecting rod penetrating through the connecting frame is cut under the action of the cutting knife, and the problem that the normal movement of the spine is hindered due to the fact that the length of the connecting rod is too long is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a front view of the connecting plate and connecting sleeve of the present invention;

FIG. 2 is a front view of the connecting plate of the present invention;

FIG. 3 is a front cross-sectional structural view of the connecting plate of the present invention;

FIG. 4 is a front view of the drill guide and the temporary fixation screw of the present invention;

FIG. 5 is a front cross-sectional structural view of a drill guide and a temporary fixation nail of the present invention;

FIG. 6 is a schematic top view of the connecting sleeve of the present invention;

FIG. 7 is a left side view of the connecting frame of the present invention;

fig. 8 is a front view schematically showing the structure of the drill guide and the temporary fixing nail in embodiment 2 of the present invention.

In the figure: 1. a connecting plate; 11. a threaded hole; 12. a slot; 13. a through groove; 2. a connecting rod; 21. positioning the bolt; 3. connecting a sleeve; 31. a handle is rotated; 32. installing a bolt; 4. a clamping block; 41. a threaded rod; 42. a limit bolt; 5. a set screw; 6. a connecting frame; 61. cutting knife; 62. a connecting bolt; 7. a drill guide; 71. connecting blocks; 8. temporarily fixing the nail; 9. and (4) connecting the pipes.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Example 1:

referring to fig. 1-3, the spine thoracolumbar anterior internal fixation device of the present invention comprises two connection plates 1, a connection sleeve 3, a drilling guide 7 and a temporary fixation nail 8, wherein the front surface of the connection plate 1 is provided with a threaded hole 11 penetrating through the front and back, the interior of the threaded hole 11 is connected with a fixation screw 5 through a thread, the interior of the connection plate 1 is respectively provided with a slot 12 and a through slot 13, the interior of the slot 12 is movably inserted with a connection rod 2, the surface of the connection rod 2 is movably inserted with a clamping block 4 fixedly connected with a threaded rod 41, the front surface of the connection plate 1 is fixedly connected with a connection frame 6, the interior of the connection frame 6 is movably connected with a cutting knife 61, the front surface of the cutting knife 61 is rotatably connected with a connection bolt 62, the surface of the connection sleeve 3 is rotatably connected with a rotation handle 31, the connection sleeve 3 is sleeved on the surface of the threaded rod 41, the top of the drilling guide 7 is fixedly connected with a connection block 71, can fix the spine of a patient and is convenient for adjusting the distance between the fixing devices, meanwhile, the length of the connecting rod 2 for fixing is prevented from influencing the normal movement of the spine, the positions of the front surface of the connecting plate 1, which are close to the top and the bottom, are respectively connected with positioning bolts 21 through threads, the back surfaces of the two positioning bolts 21 penetrate through the front surface of the connecting plate 1 and are positioned in the slots 12 and the through grooves 13, so that, after the connecting rod 2 is inserted into the insertion slot 12 and the through slot 13, the position of the connecting rod 2 can be fixed by rotating the positioning bolt 21, thereby played the fixed action to the position of two connecting plates 1, the front of grip block 4 has spacing bolt 42 through threaded connection, and the back of spacing bolt 42 runs through the front of grip block 4 and laminates mutually with the surface of connecting rod 2, can fix the inside at grip block 4 with the centre gripping of connecting rod 2 centre gripping under the effect of spacing bolt 42.

Referring to fig. 4-5, the bottom of the drill guide 7 is matched with the threaded hole 11, the surface of the drill guide 7 is threaded at a position close to the bottom and is connected with the threaded hole 11 through threads, the position of the drill guide 7 can be fixed by utilizing the threaded connection between the drill guide 7 and the threaded hole 11, so that the drilling operation is facilitated, the temporary fixing nail 8 is movably connected inside the drill guide 7, the top and the bottom of the temporary fixing nail 8 penetrate through the top and the bottom of the drill guide 7, the surface of the temporary fixing nail 8 is threaded at a position close to the top and is connected with the connecting block 71 through threads, and the drilling operation can be further facilitated under the threaded connection effect between the temporary fixing nail 8 and the connecting block 71.

Referring to fig. 6, the connection sleeve 3 is connected to the connection plate 1 through the mounting bolt 32, and the threaded rod 41 penetrates through the connection sleeve 3 and the left and right sides of the rotation handle 31 and is connected to the rotation handle 31 through threads, so that the connection mode between the connection sleeve 3 and the connection plate 1 is limited, the connection sleeve 3 can be conveniently taken down from the connection plate 1, and meanwhile, the rotation handle 31 can be rotated to drive the threaded rod 41 to move, so that the position of the clamping block 4 can be adjusted.

Referring to fig. 7, the position of the connecting frame 6 corresponds to the position of the through slot 13, the connecting rod 2 is movably inserted into the connecting frame 6, the front surface of the connecting bolt 62 penetrates through the front surface of the connecting frame 6 and is connected with the connecting frame 6 through a thread, the position of the connecting frame 6 is limited, and the connecting bolt 62 is rotated to drive the cutting knife 61 to move, so that the connecting rod 2 is cut by the cutting knife 61.

Example 2:

please refer to fig. 8, the left and right sides of the drilling guide 7 are fixedly connected with the connecting pipes 9, the bottom opening of the connecting pipes 9 is located at the bottom of the drilling guide 7, when a patient with bone fracture, especially a patient with spine fracture, is encountered, the broken bone fragments generated by drilling remain in the body and easily affect the recovery of the patient, at this time, after the connecting pipes 9 are externally connected with the medical air draft device, the broken bone fragments generated by drilling can be sucked out from the body of the patient, and the broken bone fragments are prevented from remaining in the body of the patient

In the use of the invention: firstly, inserting a connecting rod 2 into a slot 12 formed in a connecting plate 1, simultaneously screwing a positioning bolt 21 corresponding to the position of the slot 12, fixing the connecting rod 2 in the slot 12, then connecting two connecting plates 1 inserted with the connecting rods 2 by using the connecting rods 2, mutually inserting the connecting rods 2 into a through groove 13, simultaneously enabling the connecting rods 2 inserted into the through groove 13 to pass through a clamping block 4 and a connecting frame 6, then attaching the back surfaces of the butted connecting plates 1 to a spine to enable the positions to be located at spine positions needing to be fixed, simultaneously butting the bottom of a drilling guider 7 inserted with a temporary fixing nail 8 with a threaded hole 11, fixing the bottom of the drilling guider 7 in the threaded hole 11 by using threaded connection, then rotating the temporary fixing nail 8, and enabling the bottom of the temporary fixing nail 8 to slowly protrude out of the bottom of the drilling guider 7 by using threaded connection between the temporary fixing nail 8 and a connecting block 71, thereby utilizing the temporary fixing nail 8 to drill the spine of the patient, after drilling, only needing to take out the drilling guider 7 from the threaded hole 11 firstly, then screwing the fixing screw 5 into the threaded hole 11 to fix the device with the spine, after the fixing of the fixing screw 5 is finished, firstly rotating the limit bolt 42 to ensure that the limit bolt 42 is attached to the surface of the connecting rod 2, then utilizing the limit bolt 42 to clamp and fix the connecting rod 2 by the clamping block 4, then rotating the rotating handle 31, driving the threaded rod 41 to move through the threaded connection between the rotating handle 31 and the threaded rod 41, further utilizing the clamping block 4 and the threaded rod 41 to pull the connecting rod 2, ensuring that the distance between the two connecting plates 1 is mutually shortened, thereby achieving the effect of adjusting the fixed distance, after the distance adjustment is finished, rotating the positioning bolt 21 corresponding to the through groove 13 to fix the position of the connecting rod 2, simultaneously take off adapter sleeve 3 through construction bolt 32, further reduced the device's volume, prevent that the device is too big to cause the discomfort to the patient, rotate connecting bolt 62 at last, utilize connecting bolt 62 to drive to cut sword 61 and remove, and cut connecting rod 2 to passing the connecting frame 6 part under the effect that cuts sword 61, avoid connecting rod 2 length overlength to cause the hindrance to the normal activity of backbone, just accomplished the fixing to the backbone this moment.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.