A dual channel independent perfusion vertebral body shaping bone cement delivery device

Abstract

The application discloses a vertebral body shaping bone cement conveying device with double channels and independent perfusion, which comprises a conveying cylinder and a conveying pipe installed on the conveying cylinder. The vertebral body shaping bone cement conveying device with double channels and independent perfusion of the embodiment of the application drives the extrusion disc and the moving plate to perform uniform reciprocating motion through the cooperation of a mechanical driving motor and a return spring, fundamentally overcomes the defect of uneven force during traditional manual injection, and greatly improves the uniformity and stability of bone cement conveying. Secondly, the linkage mechanism of an adjusting motor and a torsional spring is utilized to flexibly adjust the single reciprocating stroke through accurate switching of the combination of the limiting groove and the positioning groove of the conveying rod, and independent and fine control of the conveying amount of each channel is realized. Finally, the bone cement pressure is monitored in real time through a monitoring member during the conveying process, and timely adjustment can be performed once the pressure imbalance is found, so that the risk of bone cement leakage is effectively prevented, and the safety of the operation and the convenience of the clinical operation are comprehensively improved.

Description

Technical Field

[0001] This application relates to the technical field of bone cement delivery, and more particularly to a vertebral body shaping bone cement delivery device with dual-channel independent injection. Background Technology

[0003] Vertebroplasty is a commonly used minimally invasive surgery for treating osteoporotic vertebral compression fractures, vertebral hemangiomas, and vertebral metastases. Its core step is to inject bone cement into the diseased vertebra to strengthen the vertebra and relieve pain.

[0004] However, existing bone cement delivery devices still have many shortcomings in actual clinical applications. For example, most of the devices currently used in clinical practice are single-channel manual injection devices, which require doctors to push the syringe piston directly by touch to inject the cement. This operation method is highly dependent on the doctor's personal experience, and the hardness of bone cement changes over time, making it difficult to ensure the uniformity and stability of the injection force. This not only makes it difficult to accurately control the injection volume, but also increases the risk of bone cement leakage. Summary of the Invention

[0006] This application aims to at least partially address one of the technical problems in the related art.

[0007] Therefore, one objective of this application is to provide a dual-channel independent perfusion vertebral body shaping bone cement delivery device, which achieves uniform reciprocating motion through mechanical drive, overcoming the defects of uneven manual injection force and improving the uniformity and stability of delivery; it supports dual-channel delivery and uses the linkage of adjusting motor and torsion spring to precisely adjust the single stroke, realizing independent and refined control of the delivery volume of each channel; at the same time, by monitoring the delivery pressure in real time, it can promptly detect and adjust pressure imbalance, effectively preventing bone cement leakage, and comprehensively improving the safety and convenience of operation of the surgery.

[0008] To achieve the above objectives, the first aspect of this application proposes a dual-channel independent injection vertebral body molding bone cement delivery device, comprising a delivery cylinder, a delivery pipe mounted on the delivery cylinder, a partition plate disposed within the delivery cylinder and the delivery pipe, discharge ports on both sides of the delivery pipe, a monitoring element disposed within the delivery pipe, and a delivery assembly mounted on the delivery cylinder. The delivery assembly includes a fixed plate fixedly mounted on the delivery cylinder; a movable groove is formed inside the fixed plate; a movable plate is slidably disposed within the movable groove; a movable rod slidably connected to the movable plate is fixedly mounted within the movable groove; a return spring is sleeved on the surface of the movable rod and located on the movable plate; a drive motor is fixedly mounted on the surface of the movable plate and located on one side of the movable groove; an extrusion plate is fixedly mounted at the output end of the drive motor; extrusion plates are slidably sealed inside the delivery cylinder and located on both sides of the partition plate; each of the two extrusion plates is provided with a delivery rod slidably connected to the delivery cylinder; a lifting mechanism is provided at both ends of the movable plate; a locking mechanism is provided on the delivery cylinder; and a fine-tuning mechanism is provided on the extrusion plate.

[0009] In addition, the dual-channel independent perfusion vertebral body shaping bone cement delivery device proposed in this application may also have the following additional technical features: In one embodiment of this application, the extrusion disc is located on one side of the extrusion plate and is slidably connected to the extrusion plate, and the extrusion disc is non-circular.

[0010] In one embodiment of this application, the lifting mechanism includes shrinkage grooves formed on both sides of the movable plate; shrinkage plates are slidably disposed inside each of the two shrinkage grooves; a shrinkage spring is fixedly installed at one end of each of the two shrinkage plates located inside the corresponding shrinkage groove; multiple limiting grooves are formed on each of the two conveying rods; and multiple positioning grooves are formed on each of the two conveying rods located within the corresponding limiting grooves.

[0011] In one embodiment of this application, the top surface of the two shrink plates located outside the corresponding shrink groove is designed as an inclined surface.

[0012] In one embodiment of this application, the interval distance between the multiple positioning slots corresponding to the multiple limiting slots is not the same.

[0013] In one embodiment of this application, the locking mechanism is installed in a movable groove on the conveying cylinder; a locking plate is rotatably disposed in the movable groove; a transmission plate is fixedly installed on the locking plate; a first torsion spring connected to the surface of the locking plate is fixedly installed in the movable groove; a plurality of locking grooves are provided on the conveying rod; an adjusting motor is fixedly installed on one end of the conveying rod near the extrusion plate; an adjusting disc is fixedly installed on the output end of the adjusting motor; a second torsion spring is fixedly installed on the adjusting disc, and one end of the second torsion spring is fixedly connected to the surface of the conveying rod.

[0014] In one embodiment of this application, one end of the locking plate is slidably disposed in the corresponding locking groove.

[0015] In one embodiment of this application, the included angle between the transmission plate and the locking plate is ninety degrees.

[0016] In one embodiment of this application, the fine-tuning mechanism includes a fine-tuning groove formed on the extrusion plate; a fine-tuning plate is slidably disposed in the fine-tuning groove; and a positioning element is disposed on the fine-tuning plate.

[0017] In one embodiment of this application, the fine-tuning plate is T-shaped, and the length of the fine-tuning groove is less than the length of the extrusion disc.

[0018] The dual-channel independent perfusion vertebral body shaping bone cement delivery device of this application embodiment, through the cooperation of a mechanical drive motor and a return spring, drives the extrusion plate and the moving plate to reciprocate at a uniform speed, fundamentally overcoming the defect of uneven force during traditional manual injection, and greatly improving the uniformity and stability of bone cement delivery; secondly, the device supports dual-channel delivery and innovatively utilizes the linkage mechanism of the adjusting motor and torsion spring, by precisely switching the combination of the limiting groove and positioning groove of the delivery rod, flexibly adjusting the single reciprocating stroke, and realizing independent and precise control of the delivery volume of each channel; finally, during the delivery process, the bone cement pressure is monitored in real time by a monitoring device, and once a pressure imbalance is detected, it can be adjusted in time, thereby effectively preventing the risk of bone cement leakage and comprehensively improving the safety of surgery and the convenience of clinical operation.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of a dual-channel independent infusion vertebral body shaping bone cement delivery device according to an embodiment of this application; Figure 2 This is a perspective view of a conveyor cylinder according to one embodiment of this application; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional view of a conveyor cylinder according to one embodiment of this application; Figure 5 This is a perspective view of a fixing plate according to an embodiment of this application; Figure 6 This is a cross-sectional view of a movable plate according to an embodiment of this application; Figure 7 This is a cross-sectional view of a delivery pipe according to one embodiment of this application.

[0022] As shown in the figure: 100, conveying cylinder; 200, conveying pipe; 300, partition plate; 400, discharge port; 500, monitoring component; 600, conveying assembly; 601, fixed plate; 602, moving trough; 603, moving plate; 604, moving rod; 605, return spring; 606, drive motor; 607, extrusion disc; 608, extrusion plate; 609, conveying rod; 700, lifting mechanism; 701, retraction. 702. Slot; 703. Shrink plate; 704. Shrink spring; 705. Limit slot; 706. Positioning slot; 807. Locking mechanism; 808. Movable slot; 809. Locking plate; 800. Transmission plate; 801. First torsion spring; 802. Locking slot; 803. Adjusting motor; 804. Adjusting disc; 805. Second torsion spring; 906. Fine-tuning mechanism; 907. Fine-tuning slot; 908. Fine-tuning plate; 909. Positioning component. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0025] The following description, in conjunction with the accompanying drawings, describes a dual-channel independent perfusion vertebral body shaping bone cement delivery device according to an embodiment of this application.

[0026] like Figures 1-7As shown, the dual-channel independent vertebral body molding bone cement delivery device of this application embodiment includes a delivery cylinder 100, a delivery pipe 200 installed on the delivery cylinder 100, a partition plate 300 disposed in the delivery cylinder 100 and the delivery pipe 200, a discharge port 400 opened on both sides of the delivery pipe 200, a monitoring element 500 disposed in the delivery pipe 200, and a delivery assembly 600 installed on the delivery cylinder 100, wherein the delivery assembly 600 includes a fixing plate 601 fixedly installed on the delivery cylinder 100.

[0027] It should be noted that the monitoring element 500 adopts existing technology and is used to detect the pressure inside the conveying pipe 200. Pressure sensors or the like can be used. The monitoring element 500 is located on the side of the discharge port 400 away from the conveying cylinder 100. At the same time, a display screen is installed on the conveying cylinder 100 to display the pressure of the monitoring element 500 in real time.

[0028] The fixed plate 601 has a movable groove 602 inside; a movable plate 603 is slidably disposed inside the movable groove 602; a movable rod 604 is fixedly installed inside the movable groove 602 and slidably connected to the movable plate 603; a return spring 605 is sleeved on the surface of the movable rod 604 and located on the movable plate 603; a drive motor 606 is fixedly installed on the surface of the movable plate 603 and located on one side of the movable groove 602; an extrusion plate 607 is fixedly installed at the output end of the drive motor 606; an extrusion plate 608 is slidably sealed inside the conveying cylinder 100 and located on both sides of the partition plate 300; a conveying rod 609 is provided on each of the two extrusion plates 608 and slidably connected to the conveying cylinder 100; a lifting mechanism 700 is provided at both ends of the movable plate 603; a locking mechanism 800 is provided on the conveying cylinder 100; and a fine-tuning mechanism 900 is provided on the extrusion plate 607.

[0029] It should be noted that a filling port is fixedly installed on the conveying cylinder 100, and a sealing cover is provided on the filling port. Bone cement can be added into the filling port by opening the sealing cover. Furthermore, the drive motor 606 is a servo motor, which can control the rotation speed of the drive motor 606.

[0030] In one embodiment of this application, such as Figure 5 As shown, the extrusion disc 607 is located on one side of the extrusion plate 608, and the extrusion disc 607 is slidably connected to the extrusion plate 608. The extrusion disc 607 is non-circular.

[0031] In one embodiment of this application, such as Figure 3 and Figure 6As shown, the lifting mechanism 700 includes retraction grooves 701 formed on both sides of the movable plate 603; retraction plates 702 are slidably disposed inside each of the two retraction grooves 701; retraction springs 703 are fixedly installed at one end of each of the two retraction plates 702 located inside the corresponding retraction grooves 701; multiple limiting grooves 704 are formed on each of the two conveying rods 609; multiple positioning grooves 705 are formed on the two conveying rods 609 and located in the corresponding limiting grooves 704.

[0032] It should be noted that the surfaces on both sides of the multiple limiting grooves 704 are inclined surfaces. In this way, when the locking mechanism 800 loses its locking on the conveying rod 609, the limiting grooves 704 can work with the shrink plate 702 to limit the conveying rod 609, thereby improving the stability of the conveying rod 609. At the same time, when the conveying rod 609 rotates, the inclined surfaces of the limiting grooves 704 can press the shrink plate 702, thereby adjusting the shrink plate 702 into different limiting grooves 704.

[0033] In one embodiment of this application, such as Figure 3 and Figure 6 As shown, the top surface of the two shrink plates 702 located outside the corresponding shrink groove 701 is designed with an inclined surface.

[0034] In one embodiment of this application, such as Figure 3 and Figure 6 As shown, the intervals between the multiple positioning grooves 705 within the multiple limiting grooves 704 are not the same.

[0035] It should be noted that multiple positioning slots 705 are provided in each of the multiple limiting slots 704, and the interval between the positioning slots 705 in each limiting slot 704 is different. Thus, different limiting slots 704 can be selected according to the amount of material conveyed in a single delivery. In addition, a slot without positioning slots 705 needs to be set up so that when bone cement is conveyed on one side, the other side can remain stationary to meet different usage needs.

[0036] In one embodiment of this application, such as Figure 3 and Figure 4As shown, the locking mechanism 800 is installed in the movable groove 801 on the conveying cylinder 100; a locking plate 802 is rotatably disposed in the movable groove 801; a transmission plate 803 is fixedly installed on the locking plate 802; a first torsion spring 804 connected to the surface of the locking plate 802 is fixedly installed in the movable groove 801; a plurality of locking grooves 805 are opened on the conveying rod 609; an adjusting motor 806 is fixedly installed on one end of the conveying rod 609 near the extrusion plate 608; an adjusting disc 807 is fixedly installed at the output end of the adjusting motor 806; a second torsion spring 808 is fixedly installed on the adjusting disc 807, and one end of the second torsion spring 808 is fixedly connected to the surface of the conveying rod 609.

[0037] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, one end of the locking plate 802 is slidably disposed in the corresponding locking groove 805.

[0038] It should be noted that the adjusting motor 806 is a stepper motor. After each rotation stops, the corresponding locking slot 805 will be positioned on one side of the locking plate 802. Furthermore, the adjusting motor 806 can also rotate in both directions to meet different adjustment needs.

[0039] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, the included angle between the transmission plate 803 and the locking plate 802 is ninety degrees.

[0040] In one embodiment of this application, such as Figure 5 As shown, the fine-tuning mechanism 900 includes a fine-tuning groove 901 formed on the extrusion plate 607; a fine-tuning plate 902 is slidably disposed in the fine-tuning groove 901; and a positioning element 903 is disposed on the fine-tuning plate 902.

[0041] It should be noted that the positioning component 903 can be a combination of a positioning pin and a positioning groove or a threaded rod, etc., to achieve relative fixation between the adjusted extrusion plate 607 and the fine-tuning plate 902.

[0042] In one embodiment of this application, such as Figure 5 As shown, the fine-tuning plate 902 is T-shaped, and the length of the fine-tuning groove 901 is less than the length of the extrusion plate 607.

[0043] Specifically, during use, bone cement is first added into the delivery cylinder 100 through the filling port. After the addition is completed, the delivery pipe 200 is inserted into the designated position. After insertion, the limit of the fine-adjustment plate 902 is released by the positioning component 903, and then the extrusion plate 607 can be pushed and pulled. This allows the position of the extrusion plate 607 on the drive shaft of the drive motor 606 to be adjusted according to the amount of bone cement delivered. The positioning component 903 is used to fix the extrusion plate 607 again. After fixing, the output end of the drive motor 606 is controlled to drive the extrusion plate 607 to extrude the moving plate 603. The moving plate 603 moves back and forth on the surface of the moving rod 604 following the rotation of the extrusion plate 607 and the push of the return spring 605. When the moving plate 603 moves toward the conveying cylinder 100, it drives the shrinking plate 702 to squeeze the conveying rod 609. In turn, the conveying rod 609 drives the extrusion plate 608 to squeeze the bone cement in the conveying cylinder 100, so that the bone cement flows out through the outlet 400 on the conveying pipe 200. During the outflow, the pressure of the bone cement is monitored in real time by the monitoring element 500. If pressure imbalance occurs, it can be adjusted in time. When the moving plate 603 moves away from the conveying cylinder 100, it drives the shrinking plate 702 to move. When the shrinking plate 702 moves, the inner wall of the positioning groove 705 squeezes the inclined surface of the top surface of the extrusion plate 608, so that the extrusion plate 608 shrinks into the shrinking groove 701. When the extrusion plate 608 returns to its original position, it will not drive the conveying rod 609 to move. Thus, the conveying rod 609 and the extrusion plate 608 can be continuously driven to squeeze the bone cement in the conveying cylinder 100. When it is necessary to control the conveying volume of the two channels, the output end of the regulating motor 806 is rotated by the control switch, which drives the regulating disc 807 and the second torsion spring 808 to rotate. The rotation angle of the regulating disc 807 can then be controlled according to the selected positioning groove 705 interval distance. The rotation of the second torsion spring 808 puts it in a torsional state. Simultaneously, as the extrusion plate 608 moves towards the conveying cylinder 100, the conveying cylinder 100 also extrudes the transmission plate 803, causing the transmission plate 803 to drive the locking plate. 802 rotates out from the locking groove 805. At this time, the torsional force of the second torsion spring 808 drives the conveying rod 609 to rotate, causing the conveying rod 609 to drive the designated limiting groove 704 to rotate to one side of the shrink plate 702. Then, when the shrink plate 702 moves back and forth, the distance of a single movement of the conveying rod 609 can be adjusted according to the interval between the corresponding positioning grooves 705 in the corresponding limiting groove 704. After the extrusion plate 608 is reset, the first torsion spring 804 drives the locking plate 802 to reset, thus completing the locking of the rotated conveying rod 609.

[0044] In summary, the dual-channel independent perfusion vertebral body shaping bone cement delivery device of this application, through the cooperation of a mechanical drive motor and a return spring, drives the extrusion plate and the moving plate to reciprocate at a uniform speed, fundamentally overcoming the defects of uneven force during traditional manual injection, and significantly improving the uniformity and stability of bone cement delivery. Secondly, the device supports dual-channel delivery and innovatively utilizes the linkage mechanism of the adjusting motor and torsion spring to flexibly adjust the single reciprocating stroke by precisely switching the combination of the limiting groove and positioning groove of the delivery rod, realizing independent and precise control of the delivery volume of each channel. Finally, during the delivery process, the bone cement pressure is monitored in real time by a monitoring device, and adjustments can be made in time once pressure imbalance is detected, thereby effectively preventing the risk of bone cement leakage and comprehensively improving the safety of surgery and the convenience of clinical operation.

[0045] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A dual-channel independent injection vertebral body shaping bone cement delivery device, characterized in that, The system includes a conveying cylinder (100), a conveying pipe (200) mounted on the conveying cylinder (100), a partition plate (300) disposed within the conveying cylinder (100) and the conveying pipe (200), discharge ports (400) opened on both sides of the conveying pipe (200), a monitoring element (500) disposed within the conveying pipe (200), and a conveying assembly (600) mounted on the conveying cylinder (100). The conveying assembly (600) includes a fixing plate (601) fixedly mounted on the conveying cylinder (100); The fixed plate (601) has a moving groove (602) inside; A movable plate (603) is slidably disposed inside the movable groove (602); A movable rod (604) that is slidably connected to the movable plate (603) is fixedly installed inside the movable groove (602). A return spring (605) is provided on the surface of the moving rod (604) and on the moving sleeve of the moving plate (603). A drive motor (606) is fixedly installed on the surface of the movable plate (603) and on one side of the movable groove (602). The output end of the drive motor (606) is fixedly mounted with an extrusion disc (607). An extrusion plate (608) is provided inside the conveying cylinder (100) and on both sides of the partition plate (300) in a sliding seal. Both of the extrusion plates (608) are provided with a conveying rod (609) that is slidably connected to the conveying cylinder (100). Both ends of the movable plate (603) are provided with lifting mechanisms (700). The conveying cylinder (100) is provided with a locking mechanism (800); The extrusion disc (607) is provided with a fine-tuning mechanism (900).

2. The dual-channel independent injection vertebral body shaping bone cement delivery device according to claim 1, characterized in that, The extrusion disc (607) is located on one side of the extrusion plate (608), and the extrusion disc (607) is slidably connected to the extrusion plate (608). The extrusion disc (607) is non-circular.

3. The dual-channel independent injection vertebral body shaping bone cement delivery device according to claim 1, characterized in that, The lifting mechanism (700) includes retraction grooves (701) formed on both sides of the movable plate (603). Both of the shrinkage grooves (701) have shrinkage plates (702) slidably disposed inside them; One end of each of the two shrink plates (702) located inside the corresponding shrink groove (701) is fixedly equipped with a shrink spring (703); Multiple limiting grooves (704) are provided on both of the conveying rods (609); Multiple positioning slots (705) are provided on the two conveying rods (609) and located in the corresponding limiting slots (704).

4. The dual-channel independent injection vertebral body shaping bone cement delivery device according to claim 3, characterized in that, The top surface of the two shrink plates (702) located outside the corresponding shrink groove (701) is designed with an inclined surface.

5. The dual-channel independent injection vertebral body shaping bone cement delivery device according to claim 3, characterized in that, The spacing between the multiple positioning grooves (705) corresponding to the multiple limiting grooves (704) is not the same.

6. The dual-channel independent injection vertebral body shaping bone cement delivery device according to claim 1, characterized in that, The locking mechanism (800) is installed in the movable groove (801) on the conveying cylinder (100); A locking plate (802) is rotatably installed inside the movable groove (801); A transmission plate (803) is fixedly installed on the locking plate (802); A first torsion spring (804) connected to the surface of the locking plate (802) is fixedly installed in the movable groove (801). The conveying rod (609) is provided with multiple locking slots (805); An adjusting motor (806) is fixedly installed on one end of the conveying rod (609) near the extrusion plate (608). An adjustment disc (807) is fixedly installed at the output end of the adjustment motor (806). A second torsion spring (808) is fixedly installed on the adjusting plate (807), and one end of the second torsion spring (808) is fixedly connected to the surface of the conveying rod (609).

7. The dual-channel independent injection vertebral body shaping bone cement delivery device according to claim 6, characterized in that, One end of the locking plate (802) is slidably disposed in the corresponding locking groove (805).

8. The dual-channel independent injection vertebral body shaping bone cement delivery device according to claim 6, characterized in that, The included angle between the transmission plate (803) and the locking plate (802) is ninety degrees.

9. The dual-channel independent injection vertebral body shaping bone cement delivery device according to claim 1, characterized in that, The fine-tuning mechanism (900) includes a fine-tuning groove (901) formed on the extrusion plate (607). A fine adjustment plate (902) is slidably disposed within the fine adjustment groove (901); The fine-tuning plate (902) is provided with a positioning element (903).

10. The dual-channel independent injection vertebral body shaping bone cement delivery device according to claim 9, characterized in that, The fine-tuning plate (902) is T-shaped, and the length of the fine-tuning groove (901) is less than the length of the extrusion plate (607).

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