Multi-path implantation fusion cage
By designing the waist circular body and multi-directional holding structure of the multi-channel implanted fusion device, the problem that the fusion device in the prior art is difficult to meet the holding needs of different orientations is solved, and multi-directional adaptability and stability are achieved, and the Effects and operational efficiency of spinal intervertebral fusion.
Patent Information
- Application Number
- CN202322743363.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-12
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-10-12
AI Technical Summary
The existing fusion devices are difficult to meet the need for holding the device to hold it from different directions, which affects the effect and operation efficiency of intervertebral fusion of the spine.
A multi-channel implantation fusion device is designed, including a round waist body, a filling hole and a number of different holding structures facing different orientations, adapted to different holding devices, and stable fixation is achieved through threaded holes and limiting slots, increasing The ridge-shaped teeth are used to enhance friction, and filling holes are provided on the inner and outer sides to accommodate the filling of autologous grafted bone and drug.
The multi-directional adaptability and stability of the multi-channel implant fusion device is achieved, the efficiency of retrieval and transfer and the operation convenience are improved, and the spinal fusion effect is enhanced.
Smart Images
Figure CN222150240U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a multi-channel implantable fusion device. Background Art
[0002] Fusion cages are suitable for spinal intervertebral fusion. As orthopedic implantable medical devices, they are one of the main implants for achieving fusion of adjacent intervertebral spaces of the spine. They have functions such as support and load distribution, and can better restore the intervertebral space height and the physiological curvature of the spine. Their safety and effectiveness directly affect the effect of bony fusion of adjacent vertebrae. In order to increase the bone transplant fusion rate, reduce external fixation dependence, and improve and maintain the curvature of the spine, the role of fusion cages is becoming increasingly important.
[0003] The holding instrument is used to hold and transfer the fusion device. Usually, the holding instrument is used in conjunction with the fusion device to implant the fusion device between two adjacent spinal segments. The existing fusion device has a single structure and it is difficult to meet the needs of the holding instrument to hold the fusion device from different directions. Utility Model Content
[0004] The utility model provides a multi-path implantable fusion device, which is used to solve the problem that the fusion device in the prior art is difficult to meet the requirement of holding the fusion device from different directions by a holding instrument.
[0005] The utility model provides a multi-path implantable fusion device, comprising: a body, a filling hole and a holding structure;
[0006] The body is oval in shape and is used to be implanted between two adjacent spinal segments. The body has a first surface, a second surface, an inner side edge and an outer side edge. The first surface is used to face one of the two adjacent spinal segments, the second surface is used to face the other of the two adjacent spinal segments, the inner side edge is used to face the front edge of the vertebral body, and the outer side edge is used to face away from the front edge of the vertebral body.
[0007] The filling hole runs through the first surface and the second surface of the body, and the filling hole is used to fill autologous transplanted bone and / or drugs;
[0008] The holding structure is used to match with a holding device. There are multiple holding structures, and the multiple holding structures are arranged along the extension direction of the outer edge. At least two of the multiple holding structures have different directions.
[0009] According to the multi-channel implantable fusion device provided by the utility model, the holding structures are provided with three;
[0010] The first of the three holding structures is arranged at the end of the outer side, the second of the three holding structures is arranged at the middle of the outer side, and the third of the three holding structures is arranged between the first and the second.
[0011] According to a multi-path implantable fusion device provided by the utility model, the angle between the extension direction of the first one of the three holding structures and the extension direction of the second one of the three holding structures is 90° to 120°.
[0012] According to a multi-channel implantable fusion device provided by the utility model, the holding structure includes a threaded hole and a limiting groove;
[0013] The limiting groove is arranged on the side of the threaded hole, the threaded hole is used to match with the holding thread on the holding device, and the limiting groove is used to match with the clamping claw on the holding device.
[0014] According to a multi-channel implant fusion device provided by the utility model, the end of the threaded hole close to the outer side is a circular hole, and the end of the threaded hole away from the outer side is a conical hole.
[0015] According to a multi-path implant fusion device provided by the utility model, the first surface of the body is provided with a first ridge-shaped tooth, and the first ridge-shaped tooth is inclined toward one side of the outer side;
[0016] And / or, the second surface of the body is provided with second ridge-shaped teeth, and the second ridge-shaped teeth are inclined toward one side of the outer edge.
[0017] According to a multi-channel implant fusion device provided by the utility model, a plurality of filling holes are provided, a part of the plurality of filling holes is used for filling autologous transplanted bones, and another part of the plurality of filling holes is used for filling drugs.
[0018] According to the multi-path implantable fusion device provided by the utility model, the thickness of the body gradually increases along the extension direction from the inner side edge to the outer side edge.
[0019] According to a multi-channel implantable fusion device provided by the utility model, the middle portion of the inner side is concave relative to the middle area of the body, and the middle portion of the outer side is convex relative to the middle area of the body.
[0020] A multi-channel implantable fusion device provided by the utility model further includes: a positioning needle;
[0021] The body is a plastic body, and the positioning pin is arranged in the plastic body and is perpendicular to the first surface or the second surface.
[0022] The multi-channel implant fusion device provided by the utility model is provided with a plurality of holding structures in the extension direction of the outer side of the main body, and at least two of the plurality of holding structures have different orientations, so that when a holding instrument is used to hold and transfer the multi-channel implant fusion device, a specific orientation can be selected to hold and transfer the multi-channel implant fusion device based on the specific needs of the holding instrument for holding the multi-channel implant fusion device, without the need to replace different multi-channel implant fusion devices, thereby enabling the multi-channel implant fusion device to adapt to the holding needs of the holding instrument in different orientations, having a wider universality, improving the efficiency of holding and transferring the multi-channel implant fusion device, and facilitating operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the multi-channel implantable fusion device provided by the utility model;
[0025] Figure 2 This is a schematic diagram of the top view of the structure of the multi-channel implant fusion device provided by the utility model;
[0026] Figure 3 It is a left-side structural schematic diagram of the multi-channel implant fusion device provided by the utility model;
[0027] Figure 4 It is a front view structural schematic diagram of the multi-channel implant fusion device provided by the utility model;
[0028] Figure 5 The utility model provides Figure 2 Schematic diagram of the AA cross-section structure.
[0029] Reference numerals:
[0030] 1. body; 11. first surface; 12. second surface; 13. inner side; 14. outer side; 111. first ridged tooth; 121. second ridged tooth;
[0031] 2. Fill the hole;
[0032] 3. Holding structure; 31. Threaded hole; 32. Limiting groove;
[0033] 4. Positioning needle. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are 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.
[0035] Combine the following Figures 1 to 5 , through specific embodiments and application scenarios, the multi-channel implantable fusion device provided by the embodiment of the utility model is described in detail.
[0036] In some embodiments, Figure 1 and Figure 2 As shown, this embodiment provides a multi-path implant fusion device, comprising: a body 1, a filling hole 2 and a holding structure 3.
[0037] The body 1 is oval in shape and is used to be implanted between two adjacent spinal segments. The body 1 has a first surface 11, a second surface 12, an inner edge 13 and an outer edge 14. The first surface 11 is used to face one of the two adjacent spinal segments, the second surface 12 is used to face the other of the two adjacent spinal segments, the inner edge 13 is used to face the front edge of the vertebral body, and the outer edge 14 is used to face away from the front edge of the vertebral body.
[0038] The filling hole 2 runs through the first surface 11 and the second surface 12 of the body 1 , and the filling hole 2 is used to fill autologous transplanted bone and / or drugs.
[0039] The holding structure 3 is used to match with the holding device. There are multiple holding structures 3, and the multiple holding structures 3 are arranged along the extension direction of the outer side 14. At least two of the multiple holding structures 3 have different directions.
[0040] It is understandable that compared with a rectangular main body, the contact area with the vertebral endplate is smaller and the fusion area is limited. The main body 1 of this embodiment has a waist-shaped structure, and the multi-way implant fusion device is easier to fit the shape of the human vertebra and can be as close to the shape of the vertebral endplate as possible, thereby achieving a better fusion effect between the multi-way implant fusion device and the spinal segment.
[0041] Specifically, the body 1 can be a plastic body or a metal body.
[0042] The filling hole 2 is used to fill the autologous transplanted bone and the drug that induces the growth of bone tissue. The filler in the filling hole 2 can stimulate the vertebral endplate fused with the first surface 11 and the second surface 12 of the multi-channel implant fusion device to promote the recovery and growth of bones.
[0043] The intervertebral space refers to the space between two adjacent spinal segments. During the process of the holding instrument transferring the multi-way implant fusion device to the intervertebral space, the holding instrument and the multi-way implant fusion device are fixed by the holding structure 3, wherein the holding structure 3 can be a hole-shaped structure that matches the protrusion on the holding instrument, and the holding structure 3 can also be a protrusion that matches the hole on the holding instrument.
[0044] In this embodiment, a plurality of holding structures 3 are arranged on the outer edge 14. The implantation position of the multi-way implant fusion device can be selected according to the requirements of the specific holding position, and a holding structure 3 suitable for the position can be selected. The holding instrument and the multi-way implant fusion device can be fixed through the holding structure 3, and the holding instrument can transfer the multi-way implant fusion device to the intervertebral space along the specific path of the selected implantation position.
[0045] The multi-channel implantable fusion device provided by the utility model is provided with a plurality of holding structures 3 in the extension direction of the outer side 14 of the main body 1, and at least two of the plurality of holding structures 3 have different orientations, so that when a holding instrument is used to hold and transfer the multi-channel implantable fusion device, a specific orientation can be selected to hold and transfer the multi-channel implantable fusion device based on the specific needs of the holding instrument for holding the multi-channel implantable fusion device, without the need to replace different multi-channel implantable fusion devices, so that the multi-channel implantable fusion device can adapt to the holding needs of the holding instrument in different orientations, has a wider universality, improves the efficiency of holding and transferring the multi-channel implantable fusion device, and is convenient to operate.
[0046] In some embodiments, Figure 1 As shown, the holding structures 3 of this embodiment are provided with three.
[0047] The first of the three holding structures 3 is arranged at the end of the outer side 14 , the second of the three holding structures 3 is arranged at the middle of the outer side 14 , and the third of the three holding structures 3 is arranged between the first and second ones.
[0048] It can be understood that the holding structure 3 located at the end of the outer side 14 of this embodiment can meet the demand of the holding instrument to hold the multi-way implant fusion device from the lateral approach, and the holding instrument can transfer the multi-way implant fusion device to the intervertebral space from the lateral approach; the holding structure 3 located in the middle of the outer side 14 can meet the demand of the holding instrument to hold the multi-way implant fusion device from the anterior approach, and the holding instrument can transfer the multi-way implant fusion device to the intervertebral space from the anterior approach; the holding structure 3 located between the middle and end of the outer side 14 can meet the demand of the holding instrument to hold the multi-way implant fusion device from the lateral anterior approach, and the holding instrument can transfer the multi-way implant fusion device to the intervertebral space from the lateral anterior approach.
[0049] This embodiment arranges holding structures 3 located in three different directions, so that the multi-path implanted fusion device can simultaneously meet the requirements of the holding instrument holding the multi-path implanted fusion device from the front, the front and the side, and has a high degree of integration, so that the holding instrument can hold the multi-path implanted fusion device from three directions.
[0050] In some embodiments, Figure 1 As shown, the included angle between the extension direction of the first one of the three holding structures 3 of this embodiment and the extension direction of the second one of the three holding structures 3 is 90° to 120°.
[0051] It can be understood that the angle between the holding structure 3 located at the end of the outer side 14 and the holding structure 3 located in the middle of the outer side 14 is 90° to 120°, and the angle between the holding structure 3 located between the end of the outer side 14 and the middle of the outer side 14 is also 90° to 120°, so that the positions of the three holding structures 3 are limited to between 90° and 120°, which meets the conventional requirements of the implantation path of the multi-way implant fusion device and can more easily ensure the adaptability of conventional holding instruments to the holding operations of the multi-way implant fusion device.
[0052] In some embodiments, Figure 1 As shown, the holding structure 3 of this embodiment includes a threaded hole 31 and a limiting groove 32.
[0053] The limiting groove 32 is arranged on the side of the threaded hole 31. The threaded hole 31 is used to match with the holding thread on the holding device, and the limiting groove 32 is used to match with the clamping claw on the holding device.
[0054] It is understandable that when the multi-way implant fusion device is held, the threaded hole 31 forms a threaded connection with the holding thread, which reduces the possibility of the holding instrument falling off the multi-way implant fusion device and facilitates the holding and transfer of the multi-way implant fusion device.
[0055] After the holding instrument is screwed to thread the holding thread and the threaded hole 31, the limiting groove 32 engages with the claw of the holding instrument to achieve circumferential positioning of the multi-channel implant fusion device, ensuring the multi-channel implant fusion device can be held stably by the holding instrument.
[0056] In some examples, two limiting grooves 32 are provided, and the two limiting grooves 32 are provided on both sides of the threaded hole 31. After the holding instrument and the multi-way implant fusion device are threadedly connected, the two claws on the holding instrument are engaged with the two limiting grooves 32 on both sides of the threaded hole 31, and the multi-way implant fusion device is limited between the two claws. The multi-way implant fusion device cannot rotate around the central axis of the threaded hole 31 when being held, thereby achieving holding stability.
[0057] In some embodiments, Figure 1 and Figure 5As shown, in this embodiment, the end of the threaded hole 31 close to the outer edge 14 is a circular hole, and the end of the threaded hole 31 away from the outer edge 14 is a conical hole.
[0058] It is understandable that the end of the threaded hole 31 away from the outer edge 14 is a conical hole, which can be adapted to a cylindrical holding thread structure or a conical holding thread structure, thereby increasing the applicability to holding instruments.
[0059] In some embodiments, Figure 3 and Figure 4 As shown, the first surface 11 of the body 1 of this embodiment is provided with a first ridge-shaped tooth 111 , and the first ridge-shaped tooth 111 is inclined toward one side of the outer side 14 .
[0060] It is understandable that the first prismatic tooth 111 is a structure formed by cutting off the top of a quadrangular pyramid by a plane parallel to the bottom surface, and the first prismatic tooth 111 has four inclined surfaces, the bottom end of the inclined surface with the largest inclination angle is close to the inner side 13, and the top end of the inclined surface with the largest inclination angle is close to the outer side 14. When the multi-path implant fusion device is implanted between two vertebrae, the first prismatic tooth 111 abuts against the vertebral endplate of one of the two adjacent spinal segments, and the first prismatic tooth 111 increases the friction between the multi-path implant fusion device and the vertebral endplate, thereby preventing the multi-path implant fusion device from slipping after implantation.
[0061] Furthermore, the first surface 11 is provided with a plurality of first prismatic teeth 111, which are arranged in an array, and the inclined surfaces with the largest inclination angles of the plurality of first prismatic teeth 111 are parallel to each other, and the top ends are all close to the outer edge 14. When the multi-way implant fusion device is implanted between two vertebrae, the plurality of first prismatic teeth 111 abut against the vertebral endplate of one of the two adjacent spinal segments, thereby increasing the contact area between the multi-way implant fusion device and the vertebral endplate, making the friction force greater and improving the fusion efficiency of the multi-way implant fusion device.
[0062] In some embodiments, Figure 3 and Figure 4 As shown, the second surface 12 of the body 1 is provided with a second ridge-shaped tooth 121 , and the second ridge-shaped tooth 121 is inclined toward one side of the outer side 14 .
[0063] It is understandable that the second prismatic tooth 121 is a structure formed by cutting off the top of a quadrangular pyramid by a plane parallel to the bottom surface, and the second prismatic tooth 121 has four inclined surfaces, the bottom end of the inclined surface with the largest inclination angle is close to the inner side 13, and the top end of the inclined surface with the largest inclination angle is close to the outer side 14. When the multi-path implant fusion device is implanted between two vertebrae, the second prismatic tooth abuts against the vertebral endplate of the other of the two adjacent spinal segments, and the second prismatic tooth 121 increases the friction between the multi-path implant fusion device and the vertebral endplate, preventing the multi-path implant fusion device from slipping after implantation.
[0064] Furthermore, the second surface 12 is provided with a plurality of second prismatic teeth 121, which are arranged in an array, and the inclined surfaces with the largest inclination angles of the plurality of second prismatic teeth 121 are parallel to each other, and the top ends are all close to the outer edge 14. When the multi-way implant fusion device is implanted between two vertebrae, the plurality of second prismatic teeth 121 abut against the vertebral endplate of the other of the two adjacent spinal segments, thereby increasing the contact area between the multi-way implant fusion device and the vertebral endplate, making the friction force greater and improving the fusion efficiency of the multi-way implant fusion device.
[0065] In some embodiments, Figure 1 As shown, in this embodiment, a plurality of filling holes 2 are provided, a portion of the plurality of filling holes 2 is used for filling autologous transplanted bones, and another portion of the plurality of filling holes 2 is used for filling drugs.
[0066] It is understandable that the present embodiment has a plurality of filling holes 2, and the plurality of filling holes 2 all penetrate the first surface 11 and the second surface 12. When autologous bone transplant or drugs are filled in the filling holes 2, the filler can penetrate the first surface 11 and the second surface 12 of the multi-path implant fusion device, so that the autologous bone transplant or drugs can evenly stimulate the vertebral end plates of adjacent segments, thereby improving the fusion efficiency of the multi-path implant fusion device.
[0067] In some embodiments, Figure 1 As shown, in this embodiment, the thickness of the body 1 gradually increases along the extending direction from the inner side edge 13 to the outer side edge 14.
[0068] It is understandable that the thickness of the main body 1 gradually increases from the front edge of the vertebral body to the rear edge of the vertebral body, and is closer to the space between two adjacent spinal segments, so that when the multi-path implant fusion device is implanted between two vertebrae, the first surface 11 fits with the vertebral endplate of one of the two adjacent spinal segments, and the second surface 12 fits with the vertebral endplate of the other of the two adjacent spinal segments, thereby increasing bone inductivity and promoting bone growth.
[0069] In some embodiments, Figure 1 and Figure 2 As shown, the middle portion of the inner side edge 13 of this embodiment is concave relative to the middle area of the main body 1, and the middle portion of the outer side edge 14 is convex relative to the middle area of the main body 1.
[0070] It can be understood that, in this embodiment, the middle part of the inner side 13 is concave relative to the middle area of the main body 1, so that the inner side 13 of the multi-way implant fusion device fits the front edge of the vertebra more closely. At the same time, in this embodiment, the middle part of the outer side 14 is convex relative to the middle area of the main body 1, so that the outer side 14 of the multi-way implant fusion device fits the rear edge of the vertebra more closely. Therefore, when the multi-way implant fusion device is implanted between two vertebrae, the outer shape of the multi-way implant fusion device is better adapted to the shape of the vertebra, thereby improving the fusion efficiency of the multi-way implant fusion device.
[0071] In some embodiments, Figure 1 As shown, this embodiment further includes: a positioning needle 4;
[0072] The body 1 is a plastic body. The positioning pin 4 is disposed in the plastic body and is perpendicular to the first surface 11 or the second surface 12 .
[0073] It is understandable that when the main body 1 is a plastic body, the positioning needle 4 is made of metal. When the multi-way implant fusion device is implanted between two vertebrae, X-rays can be used to observe the position of the positioning needle 4 in the multi-way implant fusion device, and then adjust the position of the multi-way implant fusion device to ensure the accuracy of the implantation site of the multi-way implant fusion device.
[0074] In some examples, the positioning pin 4 is arranged at a position of the main body 1 close to the inner edge 13 and the outer edge 14. When the positioning pin 4 is observed using X-rays, the position of the positioning pin 4 can roughly display the contour position of the multi-path implant fusion device, making the position of the multi-path implant fusion device more accurate.
[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A multi-path implantable fusion device, It is characterized in that include: body, filling hole and holding structure; The body is oval in shape and is used to be implanted between two adjacent spinal segments. The body has a first surface, a second surface, an inner side edge and an outer side edge. The first surface is used to face one of the two adjacent spinal segments, the second surface is used to face the other of the two adjacent spinal segments, the inner side edge is used to face the front edge of the vertebral body, and the outer side edge is used to face away from the front edge of the vertebral body. The filling hole runs through the first surface and the second surface of the body, and the filling hole is used to fill autologous transplanted bone and / or drugs; The holding structure is used to match with a holding device. There are multiple holding structures, and the multiple holding structures are arranged along the extension direction of the outer edge. At least two of the multiple holding structures have different directions.
2. The multi-path implantable fusion device according to claim 1, It is characterized in that The holding structure is provided with three; The first of the three holding structures is arranged at the end of the outer side, the second of the three holding structures is arranged at the middle of the outer side, and the third of the three holding structures is arranged between the first and the second.
3. The multi-path implantable fusion device according to claim 2, It is characterized in that The angle between the extension direction of the first one of the three holding structures and the extension direction of the second one of the three holding structures is 90° to 120°.
4. The multi-path implantable fusion device according to claim 2, It is characterized in that The holding structure includes a threaded hole and a limiting groove; The limiting groove is arranged on the side of the threaded hole, the threaded hole is used to match with the holding thread on the holding device, and the limiting groove is used to match with the clamping claw on the holding device.
5. The multi-path implantable fusion device according to claim 4, It is characterized in that One end of the threaded hole close to the outer side is a circular hole, and one end of the threaded hole away from the outer side is a conical hole.
6. The multi-path implantable fusion device according to any one of claims 1 to 5, It is characterized in that A first ridge-shaped tooth is disposed on the first surface of the body, and the first ridge-shaped tooth is inclined toward one side of the outer side; And / or, the second surface of the body is provided with second ridge-shaped teeth, and the second ridge-shaped teeth are inclined toward one side of the outer edge.
7. The multi-path implantable fusion device according to any one of claims 1 to 5, It is characterized in that There are multiple filling holes, a part of which is used to fill the autologous transplanted bone, and another part of which is used to fill the medicine.
8. The multi-path implantable fusion device according to any one of claims 1 to 5, It is characterized in that Along the extending direction from the inner side to the outer side, the thickness of the body gradually increases.
9. The multi-path implantable fusion device according to any one of claims 1 to 5, It is characterized in that The middle portion of the inner side edge is concave relative to the middle region of the main body, and the middle portion of the outer side edge is convex relative to the middle region of the main body.
10. The multi-path implantable fusion device according to any one of claims 1 to 5, It is characterized in that Also includes: Positioning needle; The body is a plastic body, and the positioning pin is arranged in the plastic body and is perpendicular to the first surface or the second surface.