Intervertebral titanium mesh implantation instrument for spinal posterior surgery

Abstract

The utility model discloses a spine posterior surgery intervertebral titanium mesh imbedding instrument which comprises a titanium mesh clamping assembly, a base and a first rotating disc arranged on the base, and the base is provided with a first operation assembly used for driving the first rotating disc to rotate and a locking assembly used for locking the first rotating disc. The titanium mesh clamping assembly is hinged to the first rotating disc, a hinge shaft is perpendicular to a rotating shaft of the first rotating disc, and a second operation assembly used for driving the titanium mesh clamping assembly to rotate around the hinge shaft is arranged on the first rotating disc. The titanium mesh clamping assembly is used for clamping and fixing the titanium mesh, after the titanium mesh is placed in the gap, the first operation assembly is operated to drive the first rotating disc and the titanium mesh to rotate in the state that the vertebral body is opened, the locking assembly is operated to lock the first rotating disc after the titanium mesh is rotated in place, and the second operation assembly is operated to enable the titanium mesh clamping assembly and the titanium mesh to rotate relative to the first rotating disc; the titanium mesh can be placed in the gap with the minimum diameter, the titanium mesh can be transversely placed and rotated in the gap, other tools do not need to enter the gap to be adjusted, and the titanium mesh adjusting device is convenient and controllable.

Description

TECHNICAL FIELD

[0001] The utility model relates to surgical instrument technical field especially, it relates to a kind of intervertebral titanium mesh implanting instrument in spinal posterior operation. BACKGROUND

[0002] Intervertebral titanium mesh implantation is widely used in spinal surgery, especially in specific infections such as spinal tuberculosis, brucellosis infection, non-specific infections such as pyogenic spinal infection, spinal tumors and spinal deformity surgery. In spinal posterior surgery, intervertebral titanium mesh is used to fill the anterior bone defect, reconstruct the spinal stability and promote bone fusion, which is the standard procedure. The intervertebral titanium mesh is in the form of a circular tube with a hollow structure.

[0003] Currently, ordinary holders or pushers are used to implant titanium mesh in clinical practice, which cannot effectively place the titanium mesh in the appropriate position and adjust the titanium mesh in the gap. Surgeons often rely on hand feeling and personal experience to place the titanium mesh, and the implantation of the titanium mesh cannot be guaranteed in the best position (such as the front 1 / 3) in the intervertebral space. During the implantation process, the instruments need to be replaced several times (such as holding first, then replacing the knocking rod to knock), which increases the operation time, bleeding volume and infection risk. During the knocking process, the impact force is directly transmitted to the titanium mesh, which may cause the titanium mesh to suddenly "jump" forward, with poor controllability, threatening the surrounding important nerve and vascular tissues, and difficult to promote the use. In order to facilitate the implantation of titanium mesh, surgeons often need to destroy most of the posterior lamina structure, which affects the stability of the spine, or choose a titanium mesh with a smaller diameter to reduce the difficulty, which may have the defects of insufficient support strength and low fusion rate, affecting the surgical effect. Especially when the posterior lamina is limited decompression, the titanium mesh cannot be effectively, safely and quickly implanted into the anterior vertebral space through the posterior, and there is a risk of damaging the adjacent spinal cord, nerve root and blood vessels, especially in the thoracic spine, damage to the spinal cord may cause very serious consequences. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and to provide an intervertebral titanium mesh implanting instrument for spinal posterior operation, which is beneficial to precise positioning and controllable implantation to improve the safety and success rate of surgery.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The application discloses a titanium mesh holder for a posterior approach spinal surgery, which comprises a titanium mesh clamping assembly, a base and a first rotating disc arranged on the base, wherein the base is provided with a first operation assembly for driving the first rotating disc to rotate and a locking assembly for locking the first rotating disc, the titanium mesh clamping assembly is hinged to the first rotating disc with a hinge shaft being perpendicular to the rotating shaft of the first rotating disc, and the first rotating disc is provided with a second operation assembly for driving the titanium mesh clamping assembly to rotate around the hinge shaft.

[0007] As a further improvement of the above technical scheme, the first operation assembly comprises a second rotating disc and a first operation handle arranged on the second rotating disc, and the first rotating disc and the second rotating disc are both provided with a plurality of transmission teeth in the circumferential direction and are in mesh with each other.

[0008] As a further improvement of the above technical scheme, the diameter of the second rotating disc is smaller than that of the first rotating disc.

[0009] As a further improvement of the above technical scheme, the locking assembly comprises a locking screw, one end of the locking screw is provided with a second operation handle, and the other end of the locking screw is provided with a locking part which can be inserted between adjacent two transmission teeth of the first rotating disc or the second rotating disc.

[0010] As a further improvement of the above technical scheme, the locking screw and the second rotating disc are arranged on the two sides of the first rotating disc.

[0011] As a further improvement of the above technical scheme, the titanium mesh clamping assembly comprises a pair of cross-hinged clamping arms, a locking screw and an elastic reset member are arranged between the pair of clamping arms, and the locking screw is provided with a locking nut.

[0012] As a further improvement of the above technical scheme, the locking screw is arranged at the upper end of the clamping arm, and the elastic reset member is arranged at the lower end of the clamping arm.

[0013] As a further improvement of the above technical scheme, the middle part of the first rotating disc is provided with a channel, the hinge shafts of the pair of clamping arms are arranged in the channel, and the side wall of the channel has a gap with the clamping arm to allow the clamping arm to rotate.

[0014] As a further improvement of the above technical scheme, the second operation assembly comprises a telescopic rod, one end of the telescopic rod is hinged to the locking screw, and the other end of the telescopic rod is hinged to the first rotating disc.

[0015] As a further improvement of the above technical solution: the telescopic rod comprises an operating sleeve, a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged with the locking screw, the other end is threadedly connected with one end of the operating sleeve, the other end of the operating sleeve is threadedly connected with one end of the second connecting rod, and the other end of the second connecting rod is hinged with the first rotating disc.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a spinal posterior operation intervertebral titanium net placing instrument, when using, utilize titanium net clamping subassembly clamping fixed titanium net, can be in the state of vertebral body distraction after placing the gap, the operation first operation subassembly drives first rotating disc and the titanium net clamping subassembly of association, titanium net rotation, after rotating in position, the operation locking subassembly locks first rotating disc, and the operation second operation subassembly can make titanium net clamping subassembly and the titanium net of clamping relative first rotating disc rotate, and the rotation axis is perpendicular with the rotation axis of first rotating disc, make titanium net be in the best position, can minimum diameter place titanium net, and the gap is inside horizontally placed, and the titanium net is rotated, need not other tools to go into the gap and adjust, convenient, controllable, be favorable to avoiding the interference and damage of nerve.

[0018] Other features and advantages of the utility model will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic diagram of the utility model spinal posterior operation intervertebral titanium net placing instrument.

[0020] The various reference numerals in the drawings represent:

[0021] 1, titanium net clamping subassembly;11, clamping arm;12, locking screw;13, elastic reset piece;14, locking nut;2, base;3, first rotating disc;31, channel;4, first operation subassembly;41, second rotating disc;42, first operation handle;5, locking subassembly;51, locking screw;52, second operation handle;53, locking portion;6, second operation subassembly;61, operating sleeve;62, first connecting rod;63, second connecting rod. DETAILED DESCRIPTION

[0022] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0024] In the utility model, unless otherwise explicitly specified and limited, the terms "assembly", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0025] The utility model will be further described in detail below in combination with the drawings and specific embodiments of the specification.

[0026] Figure 1 An embodiment of the intervertebral titanium mesh placement instrument for posterior spinal surgery of the utility model is shown, the intervertebral titanium mesh placement instrument for posterior spinal surgery of the embodiment, it includes titanium mesh clamping assembly 1, still includes base 2 and the first turntable 3 arranged on the base 2, the base 2 is equipped with the first operation assembly 4 for driving the first turntable 3 rotation and the locking assembly 5 for locking the first turntable 3, titanium mesh clamping assembly 1 is hinged with the first turntable 3 and the hinge shaft is perpendicular to the rotation axis of the first turntable 3 ( Figure 1 The first turntable 3 can rotate in the horizontal plane, and the titanium mesh clamping assembly 1 can rotate in the vertical plane), the first turntable 3 is equipped with the second operation assembly 6 for driving the titanium mesh clamping assembly 1 rotation around the hinge shaft.

[0027] The intervertebral titanium mesh placement instrument for posterior spinal surgery of the embodiment, when using, titanium mesh is clamped and fixed by titanium mesh clamping assembly 1, after being placed in the gap, it can be operated in the state of vertebral body distraction, the first operation assembly 4 drives the first turntable 3 and the associated titanium mesh clamping assembly 1, titanium mesh rotation, after rotating in place, the locking assembly 5 is operated to lock the first turntable 3, the second operation assembly 6 can be operated to rotate the titanium mesh clamping assembly 1 and the titanium mesh clamped thereby relative to the first turntable 3, and the rotation axis is perpendicular to the rotation axis of the first turntable 3, so that the titanium mesh is in the best position, the titanium mesh can be placed in the gap with the smallest diameter, and the titanium mesh can be rotated without entering the gap for adjustment by other tools, which is convenient, controllable and beneficial to avoid interference and damage to the nerve.

[0028] In the embodiment, the first operation assembly 4 comprises a second rotating disc 41 and a first operation handle 42 arranged on the second rotating disc 41, and the first rotating disc 3 and the second rotating disc 41 are both circumferentially provided with a plurality of transmission teeth and are in mesh with each other. The first operation handle 42 drives the second rotating disc 41 to rotate, and the second rotating disc 41 drives the first rotating disc 3 to rotate, thereby adjusting the orientation of the titanium mesh. The transmission teeth are used to transmit the rotary motion, and the weight of the titanium mesh clamping assembly 1 and the first rotating disc 3 are combined, which is conducive to accurately controlling the rotation angle of the first rotating disc 3.

[0029] As a preferred embodiment, the diameter of the second rotating disc 41 is smaller than the diameter of the first rotating disc 3, and when the second rotating disc 41 rotates, the rotation speed of the first rotating disc 3 is slower, which is conducive to reducing the control difficulty of the rotation angle of the first rotating disc 3.

[0030] Further, in the embodiment, the locking assembly 5 comprises a locking screw 51, one end of the locking screw 51 is provided with a second operation handle 52, and the other end is provided with a locking portion 53 (for example, arranged in a flat structure or matched with the tooth groove of the transmission tooth) which can extend into the adjacent two transmission teeth of the first rotating disc 3. By rotating the second operation handle 52, the locking portion 53 extends into the adjacent two transmission teeth, thereby limiting the rotation of the first rotating disc 3, that is, the locking purpose can be achieved, and the structure is simple and the reliability is good. Of course, in other embodiments, the locking screw 51 can also extend into the adjacent two transmission teeth of the second rotating disc 41 to achieve locking.

[0031] As a preferred embodiment, the locking screw 51 and the second rotating disc 41 are relatively arranged on both sides of the first rotating disc 3, which can make full use of the space on both sides of the first rotating disc 3 and avoid mutual influence during operation.

[0032] Further, in the embodiment, the titanium mesh clamping assembly 1 comprises a pair of cross-hinged clamping arms 11, a locking screw 12 and an elastic return member 13 (for example, a spiral spring or a spring plate) are arranged between the pair of clamping arms 11, and a locking nut 14 is arranged on the locking screw 12. Preferably, the locking screw 12 is arranged at the upper end of the clamping arm 11, and the elastic return member 13 is arranged at the lower end of the clamping arm 11. When the titanium mesh needs to be clamped, the lower end of the clamping arm 11 is first inserted into the mesh hole of the titanium mesh, and then the locking nut 14 is tightened, so that the pair of clamping arms 11 are close to each other, thereby reliably clamping and fixing the titanium mesh. When the titanium mesh needs to be loosened, the locking nut 14 is loosened, the elastic return member 13 under pressure is stretched, so that the pair of clamping arms 11 are away from each other, and then the clamping arm 11 can be taken out of the mesh hole of the titanium mesh. The structure is simple and the reliability is good.

[0033] Further, in the embodiment, the middle part of the first rotary disc 3 is provided with a channel 31, the hinge shafts of the pair of clamping arms 11 are arranged in the channel 31, and the side wall of the channel 31 has a gap with the clamping arm 11 to allow the clamping arm 11 to rotate. The first rotary disc 3 can be driven to rotate by the hinge shafts of the pair of clamping arms 11, and when the second operation assembly 6 is operated, the pair of clamping arms 11 can be driven to swing left and right as a whole in the channel 31, so as to adjust the inclined state of the titanium mesh, and the structure is reasonable and effective. Preferably, the channel 31 is a rectangular channel, and of course, in other embodiments, it can also be a circular channel.

[0034] Further, in the embodiment, the second operation assembly 6 comprises a telescopic rod, one end of the telescopic rod is hinged to the locking screw 12, and the other end is hinged to the first rotary disc 3. The telescopic rod can be driven to rotate as a whole relative to the first rotary disc 3, and the structure is simple and reliable.

[0035] Further, in the embodiment, the telescopic rod comprises an operation sleeve 61, a first connecting rod 62 and a second connecting rod 63, one end of the first connecting rod 62 is hinged to the locking screw 12, the other end is threadedly connected to one end of the operation sleeve 61, the other end of the operation sleeve 61 is threadedly connected to one end of the second connecting rod 63, and the other end of the second connecting rod 63 is hinged to the first rotary disc 3. The overall length of the telescopic rod can be adjusted by rotating the operation sleeve 61, so as to drive the titanium mesh clamping assembly 1 to rotate as a whole relative to the first rotary disc 3, and the adjustment process is continuous and easy to control.

[0036] Although the present application has been disclosed with reference to the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art, without departing from the technical scheme of the present application, can make many possible changes and modifications to the technical scheme of the present application disclosed above, or modify it into equivalent embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application shall fall within the scope of protection of the technical scheme of the present application.

Claims

1. A titanium mesh placement device for posterior spinal surgery, comprising a titanium mesh clamping assembly (1), characterized in that: It also includes a base (2) and a first turntable (3) disposed on the base (2). The base (2) is provided with a first operating component (4) for driving the first turntable (3) to rotate and a locking component (5) for locking the first turntable (3). The titanium mesh clamping component (1) is hinged to the first turntable (3) and the hinge axis is perpendicular to the rotation axis of the first turntable (3). The first turntable (3) is provided with a second operating component (6) for driving the titanium mesh clamping component (1) to rotate around the hinge axis.

2. The intervertebral titanium mesh placement device for posterior spinal surgery according to claim 1, characterized in that: The first operating component (4) includes a second turntable (41) and a first operating handle (42) disposed on the second turntable (41). Both the first turntable (3) and the second turntable (41) are provided with multiple transmission teeth along the circumferential direction and mesh with each other.

3. The intervertebral titanium mesh placement device for posterior spinal surgery according to claim 2, characterized in that: The diameter of the second turntable (41) is smaller than the diameter of the first turntable (3).

4. The intervertebral titanium mesh placement device for posterior spinal surgery according to claim 2, characterized in that: The locking assembly (5) includes a locking screw (51), one end of which is provided with a second operating handle (52), and the other end is provided with a locking part (53) that can extend into the first turntable (3) or the second turntable (41) between two adjacent transmission teeth.

5. The intervertebral titanium mesh placement device for posterior spinal surgery according to claim 4, characterized in that: The locking screw (51) and the second turntable (41) are arranged opposite to each other on both sides of the first turntable (3).

6. The intervertebral titanium mesh placement device for posterior spinal surgery according to any one of claims 1 to 5, characterized in that: The titanium mesh clamping assembly (1) includes a pair of cross-hinged clamping arms (11), with a locking screw (12) and an elastic reset member (13) between the pair of clamping arms (11), and a locking nut (14) on the locking screw (12).

7. The intervertebral titanium mesh placement device for posterior spinal surgery according to claim 6, characterized in that: The locking screw (12) is located at the upper end of the clamping arm (11), and the elastic reset member (13) is located at the lower end of the clamping arm (11).

8. The intervertebral titanium mesh placement device for posterior spinal surgery according to claim 6, characterized in that: The first turntable (3) has a channel (31) in the middle, and the hinge shafts of a pair of clamping arms (11) are located in the channel (31). There is a gap between the side wall of the channel (31) and the clamping arms (11) to allow the clamping arms (11) to rotate.

9. The intervertebral titanium mesh placement device for posterior spinal surgery according to claim 6, characterized in that: The second operating component (6) includes a telescopic rod, one end of which is hinged to the locking screw (12) and the other end of which is hinged to the first turntable (3).

10. The intervertebral titanium mesh placement device for posterior spinal surgery according to claim 9, characterized in that: The telescopic rod includes an operating sleeve (61), a first connecting rod (62), and a second connecting rod (63). One end of the first connecting rod (62) is hinged to the locking screw (12), and the other end is threaded to one end of the operating sleeve (61). The other end of the operating sleeve (61) is threaded to one end of the second connecting rod (63), and the other end of the second connecting rod (63) is hinged to the first turntable (3).

Images