Fusion cage implantation system

Abstract

The utility model provides a fusion cage implanting system, which comprises an outer rod, an inner rod and an inner rod, the inner rod is inserted into the outer rod, and materials are conveyed to the bag body through the outer rod to open the bag body; the bag body is detachably connected with the outer rod; and the structure of the folding rod when the folding rod is unfolded for use comprises one of a C type, a J type and a U type. The intervertebral fusion device extends into a treated intervertebral space, is filled and formed according to the shape of a capsule body, and plays a role in intervertebral fusion. In addition, the implantation system can be matched with an existing spine endoscope, the implantation mode under direct vision of the spine endoscope is adopted, visual operation is effectively achieved, the implantation system can be matched with existing equipment, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a fusion device implantation system. Background Art

[0002] In the field of spinal surgery, spinal fusion surgery is a common treatment method used to treat spinal instability, degenerative diseases, spinal trauma and other problems. As an implant, the main purpose of a spinal fusion cage is to promote fusion between vertebrae and restore the stability and function of the spine. Existing spinal fusion cage technologies mainly include metal fusion cages, autologous or allogeneic bone transplants, and artificial bone materials.

[0003] Nowadays, minimally invasive technology is booming in spinal surgery, and its most mature and widespread representative is percutaneous spinal endoscopic surgery, which includes percutaneous transforaminal endoscopic technology, percutaneous large channel endoscopic technology, unilateral double channel endoscopic technology, etc. The most classic percutaneous transforaminal endoscopic technology and percutaneous large channel endoscopic technology are already very mature in the minimally invasive nerve decompression and discectomy steps, but in the step of implanting the fusion device, the lens needs to be removed, and the fusion device is implanted under fluoroscopy, that is, not under direct vision, which increases the risk of nerve root and dural sac damage.

[0004] Although the unilateral dual-channel endoscopic technology that has become popular in recent years solves the problem of fusion device implantation under non-direct vision, it adds an additional surgical incision. Based on this, the present application provides a fusion device implantation system. Utility Model Content

[0005] The utility model aims to provide a fusion device implantation system.

[0006] A fusion device implantation system, comprising:

[0007] The outer rod is a hollow structure;

[0008] The inner rod is inserted into the outer rod, and the material is transported into the capsule through the outer rod to expand the capsule;

[0009] The capsule body is detachably connected to the outer rod; it is stored at the end of the outer rod, and its structure when unfolded for use includes one of C-type, J-type and U-type.

[0010] Furthermore, the length of the inner rod is not less than 18 cm; the length of the outer rod is not less than 18 cm.

[0011] Furthermore, the inner diameter of the outer rod is 2.5-3.5 mm.

[0012] Furthermore, the capsule body and the inner rod are detachably connected via threads.

[0013] Furthermore, a groove structure is provided at the end of the outer rod.

[0014] Furthermore, the opening of the capsule is connected to one end of a connecting piece, a protrusion is provided on the connecting piece, and a clamping piece cooperating with the groove structure of the outer rod is provided at the other end of the connecting piece.

[0015] Furthermore, when the capsule structure is U-shaped, the middle portion of the capsule is connected to the inner rod.

[0016] Furthermore, when the capsule structure is J-shaped or C-shaped, one end of the capsule is connected to the inner rod.

[0017] Furthermore, it also includes a hollow sleeve rod, which provides a channel for the outer rod.

[0018] Furthermore, two symmetrical gripping handles are provided at the end of the outer rod.

[0019] Furthermore, the top end of the inner rod is also connected to a rod handle, and the rod handle is connected to the outer rod through threads.

[0020] The advantages of the utility model are:

[0021] (1) The utility model provides a fusion device implant system that is inserted into the processed intervertebral space, filled and formed according to the shape of the capsule, and plays the role of intervertebral fusion. In addition, the implant system can also cooperate with the existing spinal endoscope and adopt the implantation method under the direct vision of the spinal endoscope. Compared with the traditional endoscope, it has less trauma, lower risk of nerve damage, shorter recovery time, and can effectively reduce costs;

[0022] (2) The utility model provides a fusion device implantation system, which deploys the capsule structure by implanting bone cement. Compared with the traditional endoscopic fusion device implantation method, it is simpler and has relatively lower skill requirements for the operator, which helps to improve the popularity and success rate of device use. The fusion device of this system uses bone cement, an implant material with good biocompatibility, strong plasticity and high strength. In addition, bone cement is usually low in cost, and the use of a fusion device filled with bone cement may reduce costs.

[0023] (3) The utility model can more effectively promote intervertebral fusion by filling the intervertebral space with bone cement and plasticizing the capsule into a "C-shape", "U-shape" or "J-shape" or other shapes that contact the upper and lower end plates with a large area, while reserving bone grafting space; in addition, J-shape capsules can be combined to form a C-shape, and C-shape capsules can be combined to form an O-shape; based on this, the design of multiple structures can effectively achieve adaptability to different situations and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a fusion device implantation system in a certain state of the utility model;

[0025] Figure 2It is a structural schematic diagram of a certain state of a fusion device implantation system embodiment 1 of the utility model;

[0026] Figure 3 This is an enlarged schematic diagram of a fusion device implantation system embodiment 1 of the utility model when the capsule structure is deployed and used;

[0027] Figure 4 This is a structural schematic diagram of a certain state of a fusion device implantation system embodiment 2 of the utility model;

[0028] Figure 5 This is a structural schematic diagram of a certain state of Embodiment 3 of a fusion device implantation system of the utility model;

[0029] Figure 6 It is a structural schematic diagram of a certain state of a fusion device implantation system embodiment 4 of the utility model;

[0030] Figure 7 This is a structural schematic diagram of a certain state of a fusion device implantation system embodiment 5 of the utility model;

[0031] Figure 8 It is a schematic diagram of the enlarged structure at A;

[0032] Fig. 9 This is a structural schematic diagram of a certain state of a fusion device implantation system embodiment 5 of the utility model;

[0033] Fig.10 This is a schematic diagram of the enlarged structure at point B.

[0034] In the figure, there is an outer rod 1, an inner rod 2, a capsule 3, a groove structure 4, a connecting piece 5, a protrusion 51, a clamping piece 52, a sleeve rod 6, a handle 7, and a rod handle 8. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with specific implementation methods. The following embodiments are intended to illustrate the present invention rather than to further limit the present invention.

[0036] Example 1

[0037] like Figure 1-3 As shown, this embodiment provides a fusion device implantation system, including:

[0038] The outer rod 1 is a hollow structure;

[0039] The inner rod 2 is inserted into the outer rod 1, and the outer rod 1 delivers the material into the capsule 3 to expand the capsule 3;

[0040] The capsule 3 is detachably connected to the outer rod 1; it is stored at the end of the outer rod 1 and has a U-shaped structure when unfolded for use; when the capsule 3 structure is U-shaped, the middle part of the capsule 3 is connected to the inner rod 2.

[0041] Among them, the length of the inner rod 2 is 18 cm; the length of the outer rod 1 is 18 cm.

[0042] The inner diameter of the outer rod 1 is 3.5 mm; the capsule 3 and the inner rod 2 are detachably connected by threads; two symmetrical gripping handles 7 are provided at the end of the outer rod 1; the top of the inner rod 2 is also connected to a rod handle 8, and the rod handle 8 is connected to the outer rod 1 by threads.

[0043] Specifically, the rod handle 8 is a cap structure, the outer rod 1 and the two gripping handles 7 are an integrated structure, and the threads on the rod handle 8 cooperate with the outer rod 1 body at the top of the handle 7 for easy storage.

[0044] When the system is not in operation, the capsule 3 can be effectively stored in the outer rod 1. Figure 1 As shown, when the capsule is filled with bone cement, it expands into a set shape, such as Figure 2 and Figure 3 shown.

[0045] In this embodiment, a method for using a fusion device implantation system includes:

[0046] The system is extended into the treated target site, such as the intervertebral space, and bone cement material is filled into the outer rod 1. The inner rod 2 is used to push the bone cement to the end of the outer rod 1, so that the capsule 3 can be expanded. Based on this action, the bone cement can be filled according to the shape of the capsule 3;

[0047] The filling is completed when the capsule 3 is fully expanded, and then the bone cement is waited to be formed. After the bone cement is formed, the outer rod 1 is rotated to be separated from the capsule 3 through the thread rotation. The formed and separated bone cement can play a role in intervertebral fusion.

[0048] In a further embodiment, the opening of the capsule 3 is connected to one end of the connecting member 5, and the connecting member 5 is connected to the outer rod 1 by threads. In this case, the aforementioned steps and functions can also be achieved.

[0049] In a further embodiment, if Figure 3 As described above, a circular fixed support rod limiter is provided at one end of the U-shaped bladder 3, which can cooperate with the outer rod 1 to limit and support the bladder 3 when it is stored in the outer rod 1, thereby improving the stability of the device.

[0050] Example 2

[0051] like Figure 4As shown, based on Example 1, the structure of the bladder 3 when unfolded for use can also be J-shaped; when the structure of the bladder 3 is J-shaped, one end of the bladder 3 is connected to the inner rod 2.

[0052] Example 3

[0053] like Figure 5 As shown, based on Example 1, the structure of the bladder 3 when unfolded for use can also be C-shaped; when the structure of the bladder 3 is C-shaped, one end of the bladder 3 is connected to the inner rod 2.

[0054] Example 4

[0055] like Figure 6 As shown, this embodiment provides a fusion device implantation system, including:

[0056] The outer rod 1 is a hollow structure;

[0057] The inner rod 2 is inserted into the outer rod 1, and the outer rod 1 delivers the material into the capsule 3 to expand the capsule 3;

[0058] The sleeve rod 6 provides a working channel for the outer rod 2;

[0059] The capsule 3 is detachably connected to the outer rod 1; it is stored at the end of the outer rod 1 and has a U-shaped structure when unfolded for use; when the capsule 3 structure is U-shaped, the middle part of the capsule 3 is connected to the inner rod 2.

[0060] Among them, the length of the inner rod 2 is 18 cm; the length of the outer rod 1 is 18 cm.

[0061] The inner diameter of the outer rod 1 is 3.5 mm; the capsule 3 and the inner rod 2 are detachably connected via threads; two symmetrical gripping handles 7 are provided at the end of the outer rod 1; and a rod handle 8 is also connected to the top of the inner rod 2.

[0062] The difference between this embodiment and the first embodiment is that a double-layer hollow sleeve is used: the outer rod 1 and the sleeve rod 6 work together to fill the bone cement; wherein the sleeve rod 6 is used to provide a working channel for the outer rod 1, when the outer rod 1 passes through the sleeve rod 6 and extends to the target site to be acted on, such as the intervertebral space, the bone cement material is filled into the outer rod 1, and the bone cement is pushed and transported to the end of the outer rod 1 by the inner rod 2, so that the capsule 3 can be expanded, and based on this action, the bone cement can be filled according to the shape of the capsule 3;

[0063] When the capsule 3 is fully expanded, it means that the filling is completed, and then the bone cement is waited for to be formed. After the bone cement is formed, the outer rod handle 8 is directly rotated to separate it from the capsule 3 through the thread rotation. The bone cement after being formed and separated can play the role of intervertebral fusion. This mode of action can realize the separation of the capsule 3 by rotating the rod handle 8 connected to the end of the outer rod 1, so as to better realize the implantation of the fusion device.

[0064] Example 5

[0065] like Figure 7-10 As shown, this embodiment provides a fusion device implantation system, including:

[0066] The outer rod 1 is a hollow structure;

[0067] The inner rod 2 is inserted into the outer rod 1 to transport the material in the outer rod 1 into the capsule 3 to expand the capsule 3;

[0068] The capsule 3 is detachably connected to the outer rod 1; it is stored at the end of the outer rod 1 and has a U-shaped structure when unfolded for use; when the capsule 3 structure is U-shaped, the middle part of the capsule 3 is connected to the inner rod 2.

[0069] The inner rod 2 is 20 cm long, the outer rod 1 is 18 cm long, the inner diameter of the outer rod 1 is 3.5 mm, and two symmetrical gripping handles 7 are provided at the ends of the outer rod 1.

[0070] In a further embodiment, the length of the inner rod 2 is not less than the length of the outer rod 1;

[0071] The end of the outer rod 1 is provided with a groove structure 4; the opening of the capsule 3 is connected to one end of a connecting member 5, the connecting member 5 is provided with a protrusion 51, and the other end of the connecting member 5 is provided with a clamping member 52 that cooperates with the groove structure 4 of the outer rod 1.

[0072] The method of filling bone cement for a fusion device implantation system in this embodiment is the same as that in Embodiment 1; and the step of removing the connector 5 after the bone cement is formed includes: since the length of the inner rod 2 is longer than the length of the outer rod 2, after the bone cement is formed, the inner rod 2 is pushed toward the direction of the connector, and when it is pushed to the protrusion 51 on the connector 5, the groove structure 4 provided at the end of the outer rod 1 is disengaged from the clamping piece 52 on the connector 5, thereby realizing the disengagement of the capsule 3 from the outer rod and realizing the implantation of the fusion device.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fusion device implantation system, characterized in that: include: The outer rod (1) is a hollow structure; The inner rod (2) is inserted into the outer rod (1) and conveys the material into the capsule (3) through the outer rod (1) to expand the capsule (3); The capsule (3) is detachably connected to the outer rod (1); it is stored at the end of the outer rod (1); and when unfolded for use, the capsule has a structure selected from the group consisting of a C-type, a J-type and a U-type.

2. A fusion cage implant system according to claim 1, characterized in that: The inner rod (2) is not less than 18 cm in length; and the outer rod (1) is not less than 18 cm in length.

3. A fusion cage implant system according to claim 1, characterized in that: The inner diameter of the outer rod (1) is 2.5-3.5 mm.

4. The fusion cage implant system according to claim 1, characterized in that: The capsule (3) and the inner rod (2) are detachably connected via threads.

5. The fusion cage implant system according to claim 1, characterized in that: The end of the outer rod (1) is provided with a groove structure (4).

6. A fusion cage implant system according to claim 5, characterized in that: The opening of the capsule (3) is connected to one end of a connecting piece (5), a protrusion (51) is provided on the connecting piece (5), and a clamping piece (52) is provided at the other end of the connecting piece (5) to cooperate with the groove structure (4) of the outer rod (1).

7. The fusion cage implant system according to claim 1, characterized in that: When the structure of the capsule (3) is U-shaped, the middle part of the capsule (3) is connected to the inner rod (2).

8. The fusion cage implant system according to claim 1, characterized in that: When the structure of the capsule (3) is J-shaped or C-shaped, one end of the capsule (3) is connected to the inner rod (2).

9. The fusion cage implant system according to claim 1, characterized in that: It also includes a hollow sleeve rod (6) which provides a passage for the outer rod (1).

10. The fusion cage implant system according to claim 1, characterized in that: The end of the outer rod (1) is provided with two symmetrical gripping handles (7); the top end of the inner rod (2) is also connected to a rod handle (8), and the rod handle is connected to the outer rod (1) via a thread.

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