A delivery tool for bone powder filling

Abstract

The utility model relates to dental instrument field discloses a kind of conveying tools for bone powder filling, including conveying assembly and feed assembly, conveying assembly includes conveying pipeline, one end of conveying pipeline is open and is provided with pipe cover, other end is closed, conveying pipeline is coaxially installed with push screw in, the outer cylindrical surface of conveying pipeline is provided with filling nozzle and input nozzle, input nozzle is located above conveying pipeline and close to pipe cover, filling nozzle is located below conveying pipeline and close to the closed end of conveying pipeline, feed assembly includes storage tank and dosing tube, the upper end of storage tank is open and is provided with tank cover, lower end is closed and is provided with bottom nozzle, dosing tube is located below storage tank, dosing tube, storage tank and input nozzle are connected by connection valve group, connection valve group includes two valve assemblies, one set of valve assembly is located between bottom nozzle and the upper end of dosing tube, another set of valve assembly is located between the lower end of dosing tube and input nozzle.

Description

Technical Field

[0001] This utility model relates to the field of dental instruments, specifically to a delivery tool for bone powder filling. Background Technology

[0002] Bone grafting is required for bone grafting during maxillary sinus lift surgery and for filling severe bone defects in routine surgeries. Currently, a spoon-type bone graft applicator is commonly used, but this method requires a high level of skill from the surgeon. Therefore, a search was conducted based on bone graft delivery tools, and several existing techniques were identified, which are described below: Firstly, Chinese utility model patent CN219271181U discloses a bone powder delivery device. After the nozzle is aligned with the area to be filled with dental powder, the operator controls the front cross area of ​​the clamp to loosen the clamp on the delivery tube and squeezes the blown balloon to blow the bone powder into the delivery tube, which then enters the area to be filled with dental powder. Although this method can quickly deliver bone powder to the surgical filling site, on the one hand, because the bone powder is in powder form, it is easily blown away by excessive air force during the process of squeezing the blown balloon. Therefore, the operator has high requirements for the force and speed of squeezing the blown balloon, and the operation is still relatively difficult. On the other hand, the amount of bone powder delivered to the filling site each time is uncontrollable.

[0003] Secondly, Chinese utility model patent CN216675971U discloses a bone powder delivery device. It uses multiple delivery heads and delivery tubes in a detachable manner. In actual use, doctors can change to the appropriate delivery head according to the type of bone defect of the patient. This not only improves the bone powder filling effect, but also makes the replacement operation convenient and has a wide range of applications. However, it also has some shortcomings. For example, medical staff need to manually slide the push rod to push the bone powder into the implantation site. Although there is a scale to assist, this manual pushing method still tests the operating skills of medical staff. Those with insufficient experience are prone to pushing too much bone powder.

[0004] Based on the above, this utility model proposes a conveying tool for filling bone powder. Utility Model Content

[0005] To address the problems mentioned in the background above, this utility model provides a conveying tool for filling bone meal.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows.

[0007] A bone meal filling conveying tool includes a conveying component and a feeding component. The conveying component includes a conveying pipe, one end of which is open and has a pipe cover, and the other end is closed. A pusher screw is coaxially installed inside the conveying pipe. A filling nozzle and an input nozzle are provided on the outer circumference of the conveying pipe. The input nozzle is located above the conveying pipe and close to the pipe cover, and the filling nozzle is located below the conveying pipe and close to the closed end of the conveying pipe. The feeding assembly includes a storage tank and a metering tube. The storage tank is open at the top and equipped with a tank cover, and closed at the bottom and equipped with a bottom nozzle. The metering tube is located below the storage tank. The metering tube, storage tank, and inlet nozzle are connected by a connecting valve assembly. The connecting valve assembly includes valve components. There are two sets of valve components. One set of valve components is located between the bottom nozzle and the top of the metering tube, and the other set of valve components is located between the bottom of the metering tube and the inlet nozzle. Initially, the valve component located between the bottom nozzle and the metering tube is in the closed state, and the valve component located between the metering tube and the inlet nozzle is in the open state.

[0008] Furthermore, the pipe cover is equipped with a motor for driving the pusher screw to rotate.

[0009] Furthermore, the outer surface of the conveying pipe is provided with a connecting nozzle, and the filling nozzle and the connecting nozzle are detachably connected.

[0010] Furthermore, the valve assembly includes a valve housing in the shape of a rectangular shell, a valve cover at the opening of the valve housing, a lower connector at the middle position of the valve cover, and an upper connector at the middle position of the closed end of the valve housing, with the upper connector and the lower connector being coaxial. The valve body is equipped with a gate that can move along the length of the valve body. A valve hole is opened through the end face of the gate. During the movement of the gate, the valve hole can be connected to or disconnected from the upper connector.

[0011] Furthermore, in one valve assembly, the upper nozzle is connected to the bottom nozzle and the lower nozzle is connected to the upper port of the metering tube; in another valve assembly, the upper nozzle is connected to the lower port of the metering tube and the lower nozzle is connected to the input nozzle.

[0012] Furthermore, a valve stem is provided on one side of the gate, with the end of the valve stem extending out of the valve housing, and a connecting rod is provided between the ends of the valve stems of the two valve assemblies.

[0013] Furthermore, an electric telescopic rod is installed on the outer surface of the conveying pipeline. The output end of the electric telescopic rod is connected to the connecting rod, and the telescopic direction of the electric telescopic rod is parallel to the moving direction of the gate.

[0014] Furthermore, both the first switch for driving the motor and the second switch for driving the electric telescopic rod are located on the outer surface of the conveying pipe.

[0015] Compared with the prior art, the advantages of this utility model are as follows: Since the amount of bone powder in the metering tube is constant, this solution uses a small-volume, multiple-filling method to achieve quantitative filling and conveying of bone powder. Furthermore, while the bone powder in the conveying pipe is pulled into the bone powder to be filled area by the pusher screw, the bone powder in the storage tank simultaneously falls into the metering tube. Therefore, the interval between two adjacent bone powder conveyings is short, without delaying bone powder filling. Moreover, since the bone powder is pulled into the bone powder to be filled area by the pusher screw, and the state switching of the valve assembly is achieved by the electric telescopic rod, both of which are electric, the button switches controlling both can be set on the outer surface of the conveying pipe. During use, the operator holds the conveying pipe and presses the button switch with their finger to control the bone powder filling and conveying, making the operation simpler. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 An exploded view of the conveyor components; Figure 3 A schematic diagram of the feeding assembly; Figure 4 This is a schematic diagram of the valve assembly connection; Figure 5 This is a cross-sectional view of the connecting valve assembly.

[0017] The labels in the attached diagram are: 1. Conveying assembly; 101. Conveying pipe; 102. Pipe cover; 103. Filling nozzle; 104. Input nozzle; 105. Pushing screw; 106. Motor; 2. Feeding assembly; 201. Storage tank; 202. Metering tube; 203. Connecting valve assembly; 2031. Valve body; 2032. Valve cover; 2033. Upper connector; 2034. Lower connector; 2035. Gate; 2036. Valve hole; 2037. Valve stem; 2038. Connecting rod. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0019] Reference Figures 1-5 A bone powder filling delivery tool includes a delivery component 1 and a feeding component 2. The latter is used to quantitatively supply bone powder to the former, and the former is used to guide the bone powder to be delivered to the patient's filling area. The two work together to fill in small amounts multiple times, which can improve the accuracy of the amount of bone powder filling and realize automated filling, reducing the operation difficulty for medical staff.

[0020] Conveyor Component 1: Refer to Figure 1 and Figure 2 The conveying assembly 1 includes a conveying pipe 101, one end of which is open and covered with a pipe cover 102, and the other end is closed. A pusher screw 105 is coaxially installed inside the conveying pipe 101. A motor 106 is provided on the pipe cover 102 to drive the pusher screw 105 to rotate. When the pusher screw 105 rotates, it can pull the bone powder in the conveying pipe 101 to move towards the closed end.

[0021] The outer surface of the delivery pipe 101 is provided with a filling nozzle 103 and an input nozzle 104. The input nozzle 104 is located above the delivery pipe 101 and close to the pipe cap 102, while the filling nozzle 103 is located below the delivery pipe 101 and close to the closed end of the delivery pipe 101. Furthermore, the outer surface of the delivery pipe 101 is provided with a connecting nozzle. The filling nozzle 103 and the connecting nozzle are detachably connected. This allows for the replacement of the filling nozzle 103 with a corresponding size according to the patient's specific condition.

[0022] Feeding component 2: Refer to Figures 3-5 The feeding component 2 includes a storage tank 201 and a metering tube 202. The upper end of the storage tank 201 is open and is provided with a tank cover, and the lower end is closed and is provided with a bottom spout. By opening the tank cover, bone meal can be added into the storage tank 201.

[0023] The metering tube 202 is located below the storage tank 201, and the metering tube 202, the storage tank 201 and the inlet 104 are connected by a connecting valve group 203.

[0024] The connecting valve assembly 203 includes valve components, which are provided in two sets. One set is located between the bottom nozzle and the upper end of the metering tube 202, and the other set is located between the lower end of the metering tube 202 and the inlet nozzle 104.

[0025] The valve assembly includes a valve housing 2031 in the shape of a rectangular shell, a valve cover 2032 at the opening of the valve housing 2031, a lower connector 2034 at the middle position of the valve cover 2032, and an upper connector 2033 at the middle position of the closed end of the valve housing 2031. The upper connector 2033 and the lower connector 2034 are coaxial.

[0026] The valve housing 2031 is equipped with a gate 2035, and the gate 2035 can move along the length of the valve housing 2031. A valve hole 2036 is opened through the end face of the gate 2035. During the movement of the gate 2035, the valve hole 2036 can be connected to or disconnected from the upper connector 2033.

[0027] A set of valve assemblies has an upper nozzle 2033 connected to a bottom nozzle and a lower nozzle 2034 connected to the upper port of a metering tube 202.

[0028] Another set of valve assemblies has its upper connector 2033 connected to the lower port of the metering tube 202, and its lower connector 2034 connected to the input port 104.

[0029] When the valve port 2036 is connected to the upper connector 2033, the valve assembly is open; otherwise, it is closed. The state switching of the valve assembly can be achieved by driving the gate 2035 to move.

[0030] Furthermore, a valve stem 2037 is provided on one side of the gate 2035, and the end of the valve stem 2037 extends out of the valve housing 2031. A connecting rod 2038 is provided between the ends of the valve stems 2037 of the two valve assemblies. The connecting rod 2038 can be driven to move by existing electric telescopic rod technology, thereby moving the gate 2035 and switching the state of the valve assembly. The electric telescopic rod can be set on the outer circumference of the conveying pipe 101.

[0031] Initially, the valve assembly located between the bottom nozzle and the metering tube 202 is in the closed state, and the valve assembly located between the metering tube 202 and the input nozzle 104 is in the open state.

[0032] The working principle of this utility model: First, the electric telescopic rod drives the connecting rod 2038 to move, thereby opening the valve assembly located between the bottom nozzle and the metering tube 202 and closing the valve assembly located between the metering tube 202 and the input nozzle 104. The bone powder falls into the metering tube 202 and fills the metering tube 202. It should be noted that the bone powder can fall into the metering tube 202 by gravity alone. Of course, the falling of bone powder into the metering tube 202 can also be accelerated by existing technology, which will not be elaborated here. Then, the filling nozzle 103 is aligned with the bone powder to be filled, and the electric telescopic rod drives the connecting rod 2038 to move in the opposite direction. The valve assembly between the bottom nozzle and the metering tube 202 is closed, and the valve assembly between the metering tube 202 and the input nozzle 104 is opened. The bone powder in the metering tube 202 falls into the delivery pipe 101. Then, the motor 106 drives the pusher screw 105 to rotate, thereby pulling the bone powder in the conveying pipe 101 to fall into the bone powder to be filled part. At the same time, the electric telescopic rod drives the connecting rod 2038 to move, the valve assembly between the bottom nozzle and the metering tube 202 opens, and the valve assembly between the metering tube 202 and the input nozzle 104 closes, so that the bone powder falls into the metering tube 202. Then repeat the above steps.

[0033] Since the amount of bone powder in the metering tube is constant, this solution uses a small-volume, multiple-filling method to achieve quantitative filling and conveying of bone powder. Furthermore, while the bone powder in the conveying pipe is pulled into the bone powder to be filled area by the pusher screw, the bone powder in the storage tank simultaneously falls into the metering tube. Therefore, the interval between two adjacent bone powder conveyings is short, without delaying bone powder filling. Moreover, since the bone powder is pulled into the bone powder to be filled area by the pusher screw, and the state switching of the valve assembly is achieved by the electric telescopic rod, both of which are electric, the button switches controlling both can be set on the outer surface of the conveying pipe. During use, the operator holds the conveying pipe and presses the button switch with their finger to control the bone powder filling and conveying, making the operation simpler.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A conveying tool for filling bone meal, comprising a conveying assembly (1) and a feeding assembly (2), characterized in that, The conveying assembly (1) includes a conveying pipe (101), one end of which is open and fitted with a pipe cap (102), and the other end is closed. A pusher screw (105) is coaxially installed inside the conveying pipe (101). A filling nozzle (103) and an input nozzle (104) are provided on the outer surface of the conveying pipe (101). The input nozzle (104) is located above the conveying pipe (101) and close to the pipe cap (102). The filling nozzle (103) is located below the conveying pipe (101) and close to the closed end of the conveying pipe (101). The feeding assembly (2) includes a storage tank (201) and a metering tube (202). The upper end of the storage tank (201) is open and has a tank cover, and the lower end is closed and has a bottom nozzle. The metering tube (202) is located below the storage tank (201). The metering tube (202), the storage tank (201) and the input nozzle (104) are connected by a connecting valve assembly (203). The connecting valve assembly (203) includes valve components. There are two sets of valve components. One set of valve components is located between the bottom nozzle and the upper end of the metering tube (202), and the other set of valve components is located between the lower end of the metering tube (202) and the input nozzle (104). Initially, the valve component located between the bottom nozzle and the metering tube (202) is in a closed state, and the valve component located between the metering tube (202) and the input nozzle (104) is in an open state.

2. The bone meal filling conveying tool according to claim 1, characterized in that, The tube cap (102) is equipped with a motor (106) for driving the pusher screw (105) to rotate.

3. The bone meal filling conveying tool according to claim 1, characterized in that, The outer surface of the conveying pipe (101) is provided with a connecting nozzle, and the filling nozzle (103) is detachably connected to the connecting nozzle.

4. A bone meal filling conveying tool according to claim 2, characterized in that, The valve assembly includes a valve housing (2031) in the shape of a rectangular shell, a valve cover (2032) at the opening of the valve housing (2031), a lower connector (2034) at the middle position of the valve cover (2032), and an upper connector (2033) at the middle position of the closed end of the valve housing (2031). The upper connector (2033) and the lower connector (2034) are coaxial. The valve housing (2031) is equipped with a gate (2035) and the gate (2035) can move along the length of the valve housing (2031). A valve hole (2036) is opened through the end face of the gate (2035). During the movement of the gate (2035), the valve hole (2036) can be connected to or disconnected from the upper connector (2033).

5. A bone meal filling conveying tool according to claim 4, characterized in that, In one valve assembly, the upper nozzle (2033) is connected to the bottom nozzle and the lower nozzle (2034) is connected to the upper port of the metering tube (202). In another valve assembly, the upper nozzle (2033) is connected to the lower port of the metering tube (202) and the lower nozzle (2034) is connected to the input nozzle (104).

6. A bone meal filling conveying tool according to claim 5, characterized in that, A valve stem (2037) is provided on one side of the gate (2035), and the end of the valve stem (2037) extends out of the valve housing (2031). A connecting rod (2038) is provided between the ends of the valve stems (2037) of the two valve assemblies.

7. A bone meal filling conveying tool according to claim 6, characterized in that, An electric telescopic rod is provided on the outer surface of the conveying pipe (101). The output end of the electric telescopic rod is connected to the connecting rod (2038). The telescopic direction of the electric telescopic rod is parallel to the moving direction of the gate (2035).

8. A bone meal filling conveying tool according to claim 7, characterized in that, Switch 1, used to drive the motor (106), and switch 2, used to drive the electric telescopic rod, are both located on the outer surface of the conveying pipe (101).

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