Bone wax applicator

Abstract

The utility model discloses a bone wax daubing gun belongs to medical instrument technical field, and the bone wax daubing gun includes the gun body, and the gun body includes the handle portion of main part and the handle portion below main part, is equipped with the bone wax containing pipe in the main part, is equipped with the containing cavity for containing bone wax in the bone wax containing pipe, and the front end of bone wax containing pipe is equipped with the gun barrel for guiding the bone wax to flow out, and is equipped with the piston in the containing cavity, is equipped with the first heating film on the bone wax containing pipe, and is equipped with the second heating film on the gun barrel, and the motor is equipped with in the main part and is located the rear of bone wax containing pipe, and the motor drive connection has the screw rod that inserts in the containing cavity, and the middle part of piston is fixedly equipped with the nut, and the nut rotation is connected in the screw rod, and the handle portion is equipped with the battery of first heating film, second heating film and motor power supply. The utility model discloses a bone wax daubing gun is even to bone wax heating and control accurate.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a bone wax application gun. Background Technology

[0002] Bone wax products have a wide range of applications. They can be used to stop bleeding from capillary lesions in the bone marrow caused by bone fractures, skull drilling, or fragmentation at different ages, locations, and from different causes. They seal the bleeding pathways between bones to control bleeding from bone injuries.

[0003] With technological advancements, absorbable bone wax is commonly used in current technologies. This absorbable bone wax is a compound of Pluronic F88 and Pluronic 85, where Pluronic is a polyoxyethylene-polyoxypropylene ether block copolymer. This is a novel type of high-molecular-weight nonionic surfactant, first successfully developed in the United States. It is virtually non-toxic and readily soluble in water or ethanol. It is widely used as an emulsifier, solubilizer, ointment, and pharmaceutical excipient. Absorbable bone wax is a biopolymer material composed of C, H, and O elements. Theoretically, it is a biodegradable and absorbable substance, with degradation products being CO2 and H2O. These degradation products have no toxic side effects on the body, and CO2 and H2O are the final metabolic products in humans and animals. Traditional bone wax delivery devices typically preheat the storage device (needle) on a heating platform before use. This causes unused bone wax to quickly solidify into lumps within the needle, requiring reheating and delaying surgical time.

[0004] In the prior art, such as the invention patent application with publication number CN109999326A, a bone wax application gun is disclosed, comprising: a gun head for applying bone wax, the gun head including a nozzle and a gun head tube, the nozzle and the gun head tube being connected by a rotary directional joint, the rotary directional joint being capable of changing the angle of the nozzle; a gun body connected to the gun head tube for storing bone wax, the gun body being detachably connected to a first gun body portion and a second gun body portion; and an injection device for injecting bone wax, the injection device including an injection piston, an injection rod, and a handle, one end of the injection rod being connected to the injection piston and the other end being connected to the handle. This invention can avoid the surgeon directly contacting the wound surface, prevent the surgeon from scratching the skin and secondary contamination of the surgical field, and can improve the hemostatic effect.

[0005] The heating device in the aforementioned patent application is an electric heating wire located between the first gun body and the second gun body. When heating, the bone wax closer to the electric heating wire melts faster, while the bone wax farther away from the electric heating wire melts slower, resulting in uneven heating. Moreover, since the bone wax application gun is manually driven, it is not only laborious to use, but also prone to inaccurate control. Utility Model Content

[0006] The technical problem to be solved by this invention is to provide a bone wax application gun that can heat bone wax evenly and with precise control.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A bone wax application gun includes a gun body, the gun body comprising a main body portion and a handle portion located below the main body portion, wherein:

[0009] The main body is provided with a bone wax receiving tube, the bone wax receiving tube is provided with a receiving cavity for receiving bone wax, the front end of the bone wax receiving tube is provided with a gun barrel for guiding the bone wax out, the receiving cavity is provided with a piston, the bone wax receiving tube is provided with a first heating film, and the gun barrel is provided with a second heating film.

[0010] A motor is located behind the bone wax receiving tube inside the main body. The motor drives a screw inserted into the receiving cavity. A nut is fixed in the middle of the piston and is rotatably connected to the screw. A battery is provided inside the handle to power the first heating film, the second heating film, and the motor.

[0011] Furthermore, a first temperature sensor is provided on the bone wax receiving tube, a second temperature sensor is provided on the gun barrel, and a control circuit board is provided inside the gun body. Both the first and second temperature sensors are connected to the control circuit board.

[0012] Furthermore, the bone wax receiving tube is syringe-shaped, the gun barrel is connected to the front end of the bone wax receiving tube in the form of a Luer interface, the rear end edge of the bone wax receiving tube is provided with a stop limiting plate, the main body is provided with an installation chamber for accommodating the bone wax receiving tube, and the installation chamber is provided with a limiting groove that cooperates with the stop limiting plate.

[0013] Alternatively, the bone wax receiving tube is a circular tube with openings at both ends. The gun barrel includes a guide section and a cover section from front to back. The outer diameter of the cover section is larger than the outer diameter of the guide section and equal to the outer diameter of the bone wax receiving tube. The guide section is fixed to the front end of the cover section. The cover section is connected to the front opening of the bone wax receiving tube using a Luer interface. The rear edge of the bone wax receiving tube is provided with a stop and limiting plate. The main body is provided with an installation chamber for accommodating the bone wax receiving tube and the cover section. The installation chamber is provided with a limiting groove that cooperates with the stop and limiting plate.

[0014] Furthermore, the end of the screw near the motor is detachably mounted to the output shaft of the motor.

[0015] Furthermore, the output shaft of the motor is a D-shaped shaft, and the end of the screw near the motor is provided with a D-shaped hole that mates with the D-shaped shaft.

[0016] Furthermore, a trigger is provided at the lower part of the main body near the handle, and a start switch for controlling the operation of the motor is provided behind the trigger, and the trigger is driven and connected to the start switch.

[0017] Furthermore, the lower part of the main body is provided with a trigger sliding groove extending in a horizontal direction, and the trigger is slidably connected to the trigger sliding groove.

[0018] Furthermore, the end face of the trigger facing the start switch is provided with a mounting groove extending along the trigger's movement direction and a guide post is formed in the mounting groove. The end face of the start switch facing the trigger is provided with a boss. A spring is provided between the trigger and the start switch. One end of the spring is sleeved on the guide post and the other end is sleeved on the boss.

[0019] Furthermore, the battery is disposed inside the battery pack housing, the handle portion has a battery receiving compartment, and the battery pack housing is installed on the battery receiving compartment;

[0020] And / or, both the first heating film and the second heating film are graphene heating films;

[0021] And / or, the control circuit board is provided inside the main body behind the motor, and a buzzer is provided on the control circuit board;

[0022] And / or, an insulating film is attached to the outer surface of the first heating film.

[0023] Furthermore, the gun body is formed by two parts that are fastened together;

[0024] And / or, the capacity of the receiving cavity is 50 ml;

[0025] And / or, a heating switch is provided at the lower part of the handle;

[0026] And / or, a display window is provided on the front outer side wall of the main body, and the display window is provided with a display screen for displaying the bone wax temperature and battery power.

[0027] This utility model has the following beneficial effects:

[0028] 1. The gun body includes a main body and a handle located below the main body. A motor is located behind the bone wax receiving tube inside the main body. The motor drives a screw inserted into the receiving cavity. A nut is fixed in the middle of the piston. The nut is rotatably connected to the screw. The screw occupies the middle position of the receiving cavity. The bone wax in the bone wax receiving tube is arranged around the screw (i.e., in a ring arrangement). In this way, there is no problem of insufficient melting of bone wax in the middle position. The first heating film can evenly heat the bone wax.

[0029] 2. The bone wax is applied by driving a screw through a motor. Compared with the manual extrusion control in the prior art, the bone wax is pushed by a screw and nut transmission method to achieve forward and backward movement, which is more precise and labor-saving.

[0030] 3. The main body is provided with a bone wax receiving tube, which has a receiving cavity for receiving bone wax. The front end of the bone wax receiving tube is provided with a gun barrel for guiding the bone wax out. A piston is provided in the receiving cavity. A first heating film is provided on the bone wax receiving tube, and a second heating film is provided on the gun barrel. In the process of use, if it needs to be used multiple times and the interval between uses is long, the bone wax in the gun barrel in the prior art will solidify and cause the bone wax to be unable to be pushed out, which is inconvenient to use. However, the second heating film in this application can heat the bone wax in the gun barrel without the need for external equipment such as water baths for heat preservation, which reduces costs and is convenient to use. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the bone wax application gun of this utility model;

[0032] Figure 2 This is an exploded structural diagram of Embodiment 1 of the bone wax application gun of this utility model;

[0033] Figure 3 This is an exploded structural diagram of Embodiment 2 of the bone wax application gun of this utility model;

[0034] Figure 4 for Figure 1 A schematic diagram of the side section structure;

[0035] Figure 5 for Figure 4 A magnified structural diagram at point A. Detailed Implementation

[0036] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] This utility model provides a bone wax application gun, such as Figure 1-5 As shown, the gun includes a gun body 1, which includes a main body 11 and a handle 12 located below the main body 11, wherein:

[0039] The main body 11 is provided with a bone wax receiving tube 2, and the bone wax receiving tube 2 is provided with a receiving cavity (not shown) for receiving bone wax. The front end of the bone wax receiving tube 2 is provided with a gun barrel 3 for guiding the bone wax out. The receiving cavity is provided with a piston 4. The bone wax receiving tube 2 is provided with a first heating film (not shown), and the gun barrel 3 is provided with a second heating film (not shown).

[0040] A motor 5 is located behind the bone wax receiving tube 2 inside the main body 11. The motor 5 drives a screw 6 inserted into the receiving cavity. A nut 41 is fixed in the middle of the piston 4. The nut 41 is rotatably connected to the screw 6. A battery 7 is provided inside the handle 12 to power the first heating film, the second heating film and the motor 5.

[0041] In use, the first heating film on the bone wax receiving tube 2 first heats the bone wax in the receiving cavity of the bone wax receiving tube 2. After the bone wax is heated and melted into a liquid state, the handle 12 of the gun body 1 is held and the end of the gun barrel 3 is aligned with the area to be hemostatically stopped. The motor 5 is then activated, driving the screw 6 to rotate. The nut 41 moves forward continuously, and the piston 4 fixed to the outer periphery of the nut 41 also moves forward. The bone wax in the receiving cavity is pushed by the piston 4 from the receiving cavity of the bone wax receiving tube 2 into the gun barrel 3. Finally, the bone wax flows to the area to be hemostatically stopped under the guidance of the gun barrel 3. In specific implementation, the bone wax filled in this application can be annular bone wax. The inner diameter of the annular bone wax is slightly larger than the outer diameter of the screw 6, and the outer diameter of the annular bone wax is slightly smaller than the inner diameter of the receiving cavity.

[0042] This utility model discloses a bone wax application gun, comprising a gun body 1, which includes a main body 11 and a handle 12 located below the main body 11. A motor 5 is located behind a bone wax receiving tube 2 within the main body 11. The motor 5 drives a screw 6 inserted into the receiving cavity. A nut 41 is fixedly mounted in the middle of a piston 4, and the nut 41 is rotatably connected to the screw 6. The screw 6 occupies the middle position of the receiving cavity. The bone wax in the bone wax receiving tube 2 is arranged around the screw 6 (i.e., in a ring shape). This eliminates the problem of insufficient melting of the bone wax in the middle position, and the first heating film can evenly heat the bone wax. Furthermore, the application of bone wax by the motor 5 driving the screw 6 is significantly more efficient than the manual extrusion control in the prior art. The bone wax is pushed forward and backward using a screw and nut transmission method, which makes the control more precise and labor-saving. The main body 11 is equipped with a bone wax receiving tube 2, which has a receiving cavity for holding bone wax. The front end of the bone wax receiving tube 2 is equipped with a gun barrel 3 for guiding the bone wax out. A piston 4 is provided in the receiving cavity. A first heating film is provided on the bone wax receiving tube 2, and a second heating film is provided on the gun barrel 3. In the process of use, if it needs to be used multiple times and the interval between uses is long, the bone wax in the gun barrel in the prior art will solidify and cause the bone wax to be unable to be pushed out, which is inconvenient to use. However, the second heating film in this application can heat the bone wax in the gun barrel 3 without the need for external equipment such as water baths for heat preservation, which reduces costs and is convenient to use.

[0043] In some embodiments of this invention, a first temperature sensor (not shown) may be provided on the bone wax receiving tube 2, and a second temperature sensor (not shown) may be provided on the gun barrel 3. A control circuit board 8 is provided inside the gun body 1, and both the first and second temperature sensors are connected to the control circuit board 8. The first temperature sensor is used to detect the temperature of the bone wax receiving tube 2 (i.e., the temperature of the bone wax), and the second temperature sensor is used to detect the temperature of the gun barrel 3. The two temperature sensors display the temperature through the control circuit board 8, which facilitates understanding the temperature of the bone wax at various locations, thereby controlling the operation of the first and second heating films. It is conceivable that the first and second heating films can work simultaneously, or they can selectively work separately as needed. Furthermore, both the first and second heating films are graphene heating films. The graphene film is wrapped around the outer surface of the corresponding cavity (bone wax container tube 2 and gun barrel 3), and a temperature sensor is equipped to monitor the temperature of the cavity. After the cavity is heated, the bone wax near the inner surface of the cavity melts rapidly. After melting into liquid, it transfers the temperature to the center until all the bone wax has melted. Then the heating stops and the temperature no longer rises (the melting point of bone wax is generally 50-60℃). When the preset temperature is reached, the temperature deviation is controlled to be ≤2℃.

[0044] The bone wax receiving tube 2 and the gun barrel 3 can be in various structural forms readily conceived by those skilled in the art. The present invention can have the following two embodiments:

[0045] Example 1

[0046] like Figure 2 As shown, the bone wax receiving tube 2 can be syringe-shaped. The gun barrel 3 is connected to the front end of the bone wax receiving tube 2 using a Luer interface. A stop and limiting plate 21 is provided at the rear edge of the bone wax receiving tube 2. The main body 11 is provided with an installation chamber 111 for receiving the bone wax receiving tube 2. The installation chamber 111 is provided with a limiting groove 112 that cooperates with the stop and limiting plate 21. In this way, the stop and limiting plate 21 can fix the entire bone wax receiving tube 2 in the installation chamber 111, which is firmly fixed and has a simple structure.

[0047] Example 2

[0048] like Figure 3 As shown, the bone wax receiving tube 2 can be a circular tube with openings at both ends. The gun barrel 3 includes a guide section 31 and a cover section 32 from front to back. The outer diameter of the cover section 32 is larger than the outer diameter of the guide section 31 and equal to the outer diameter of the bone wax receiving tube 2. The guide section 31 is fixed to the front end of the cover section 32, and the cover section 32 is connected to the front opening of the bone wax receiving tube 2 using a Luer interface. A stop and limiting plate 21 is provided at the rear edge of the bone wax receiving tube 2. The main body 11 has an installation chamber 111 for accommodating the bone wax receiving tube 2 and the cover section 32. The installation chamber 111 has a limiting groove 112 that cooperates with the stop and limiting plate 21. In this way, the bone wax receiving tube 2 has openings at both ends. Compared with the first embodiment, it can fill bone wax not only at the rear opening but also at the front opening, making it more convenient to use.

[0049] In some embodiments of this invention, the end of the screw 6 near the motor 5 is detachably mounted to the output shaft of the motor 5. This facilitates the installation of the screw 6 onto the output shaft of the motor 5 after the bone wax has been filled, increasing the convenience of filling the bone wax.

[0050] In some embodiments of this utility model, the output shaft of the motor 5 can be a D-shaped shaft (not shown), and the end of the screw 6 near the motor 5 is provided with a D-shaped hole (not shown) that mates with the D-shaped shaft. In this way, the D-shaped shaft and the D-shaped hole can mate with each other and can also be connected by interference fit to achieve a detachable connection. In a specific implementation, a through hole (not shown) can also be provided on the side wall of the D-shaped hole, and a set screw 61 for fixing the D-shaped shaft is provided in the through hole, which is firmly fixed and low in cost.

[0051] In some embodiments of this utility model, such as Figure 2-5As shown, a trigger 113 may be provided at the lower part of the main body 11 near the handle part 12. A start switch 114 for controlling the operation of the motor 5 is provided behind the trigger 113, and the trigger 113 is driven and connected to the start switch 114. This facilitates control of the motor 5. To facilitate fixing the trigger 113, a trigger sliding groove 115 extending horizontally may be provided at the lower part of the main body 11, and the trigger 113 is slidably connected to the trigger sliding groove 115.

[0052] In some embodiments of this utility model, the end face of the trigger 113 facing the start switch 114 may be provided with a mounting groove 1131 extending along the moving direction of the trigger 113, and a guide post 1132 is formed in the mounting groove 1131. The end face of the start switch 114 facing the trigger 113 is provided with a boss 1141. A spring 116 is provided between the trigger 113 and the start switch 114, with one end of the spring 116 sleeved on the guide post 1132 and the other end sleeved on the boss 1141. Thus, after the driving of the trigger 113 is stopped, under the action of the spring 116, the trigger 113 slides away from the start switch 114 and automatically resets, which is convenient to use.

[0053] In some embodiments of this utility model, the battery 7 can be disposed inside the battery pack housing 71, and the handle portion 12 is provided with a battery receiving compartment 121. The battery pack housing 71 is installed in the battery receiving compartment 71, and the battery pack housing 71 independently supplies power to the motor (motor 5) and the heating system (first heating film and second heating film) for independent operation without interference. In specific implementations, a rear cover (sliding cover) can also be provided on the battery receiving compartment 121 to facilitate battery replacement.

[0054] In some embodiments of this utility model, a control circuit board 8 may be provided behind the motor 5 within the main body 11. The control circuit board 8 is equipped with a buzzer (not shown), which will sound an audible alert when the set temperature is reached. A heat insulation film (not shown) may be attached to the outer surface of the first heating film. In this way, the heat insulation film can insulate against high temperatures, preventing the user from being burned by heat conducted by the first heating film, and improving the heating efficiency of bone wax.

[0055] In some embodiments of this utility model, the gun body 1 can be formed by snapping together the left and right parts, which is convenient for assembly; for general surgical hemostasis, the amount of bone wax used in a single surgery is 20-30ml. Preferably, the capacity of the cavity of the bone wax receiving tube 2 can be 50ml to meet the clinical needs of a single surgery; the lower part of the handle part 12 can be provided with a heating switch 122, which is used to control the working status of the first heating film and the second heating film. The front outer side wall of the main body part 11 is provided with a display window (not shown), and the display window is provided with a display screen 117 for displaying the bone wax temperature and battery power.

[0056] In summary, the bone wax application gun of this invention features a compact design and can hold 50ml of bone wax per application, which can meet the clinical needs of a single surgery, avoiding multiple fillings and delaying surgical time. The bone wax container 2 and the gun barrel 3 of this invention both utilize graphene thin film heating technology, offering the following advantages:

[0057] High-efficiency conversion of graphene heating technology: The total effective electrothermal energy conversion rate of graphene heating film can reach over 99%, far exceeding that of traditional heating materials. This means lower energy consumption and shorter heating time.

[0058] Uniform heating: Graphene heating technology can achieve uniform heating across the entire heating surface, avoiding the uneven heating and cooling problems that occur with traditional materials during use.

[0059] Furthermore, the handle is equipped with a power and temperature display window and a buzzer, allowing the operator to receive clear feedback (auditory and visual). The graphene heating process does not produce harmful gases or radiation, is harmless to the human body, and has high stability and durability, ensuring long-term safe use. It also features short heating time and intelligent reminder functions.

[0060] Furthermore, this invention can be a disposable product, avoiding the risk of cross-infection during surgery. The battery is rechargeable and reusable, making it green and environmentally friendly.

[0061] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A bone wax application gun, characterized in that, The gun includes a gun body, which comprises a main body and a handle located below the main body, wherein: The main body is provided with a bone wax receiving tube, the bone wax receiving tube is provided with a receiving cavity for receiving bone wax, the front end of the bone wax receiving tube is provided with a gun barrel for guiding the bone wax out, the receiving cavity is provided with a piston, the bone wax receiving tube is provided with a first heating film, and the gun barrel is provided with a second heating film. A motor is located behind the bone wax receiving tube inside the main body. The motor drives a screw inserted into the receiving cavity. A nut is fixed in the middle of the piston and is rotatably connected to the screw. A battery is provided inside the handle to power the first heating film, the second heating film, and the motor.

2. The bone wax application gun according to claim 1, characterized in that, The bone wax container is equipped with a first temperature sensor, the gun barrel is equipped with a second temperature sensor, and the gun body is equipped with a control circuit board. Both the first and second temperature sensors are connected to the control circuit board.

3. The bone wax application gun according to claim 1, characterized in that, The bone wax receiving tube is syringe-shaped, and the gun barrel is connected to the front end of the bone wax receiving tube in the form of a Luer interface. The rear end edge of the bone wax receiving tube is provided with a stop and limiting plate. The main body is provided with an installation chamber for receiving the bone wax receiving tube, and the installation chamber is provided with a limiting groove that cooperates with the stop and limiting plate. Alternatively, the bone wax receiving tube is a circular tube with openings at both ends. The gun barrel includes a guide section and a cover section from front to back. The outer diameter of the cover section is larger than the outer diameter of the guide section and equal to the outer diameter of the bone wax receiving tube. The guide section is fixed to the front end of the cover section. The cover section is connected to the front opening of the bone wax receiving tube using a Luer interface. The rear edge of the bone wax receiving tube is provided with a stop and limiting plate. The main body is provided with an installation chamber for accommodating the bone wax receiving tube and the cover section. The installation chamber is provided with a limiting groove that cooperates with the stop and limiting plate.

4. The bone wax application gun according to claim 1, characterized in that, The end of the screw near the motor can be detachably mounted on the output shaft of the motor.

5. The bone wax application gun according to claim 4, characterized in that, The output shaft of the motor is a D-shaped shaft, and the end of the screw near the motor is provided with a D-shaped hole that mates with the D-shaped shaft.

6. The bone wax application gun according to claim 5, characterized in that, A trigger is provided at the lower part of the main body near the handle, and a start switch for controlling the operation of the motor is provided behind the trigger. The trigger is driven by the start switch.

7. The bone wax application gun according to claim 6, characterized in that, The lower part of the main body is provided with a trigger sliding groove extending in a horizontal direction, and the trigger is slidably connected to the trigger sliding groove.

8. The bone wax application gun according to claim 7, characterized in that, The trigger has a mounting groove extending along the trigger's movement direction on its end face facing the start switch, and a guide post is formed in the mounting groove. The start switch has a boss on its end face facing the trigger. A spring is provided between the trigger and the start switch, with one end of the spring sleeved on the guide post and the other end sleeved on the boss.

9. The bone wax application gun according to claim 2, characterized in that, The battery is located inside the battery pack housing, and the handle portion has a battery storage compartment, with the battery pack housing installed in the battery storage compartment; And / or, both the first heating film and the second heating film are graphene heating films; And / or, the control circuit board is provided inside the main body behind the motor, and a buzzer is provided on the control circuit board; And / or, an insulating film is attached to the outer surface of the first heating film.

10. The bone wax application gun according to claim 1, characterized in that, The gun body is formed by two parts that are fastened together; And / or, the capacity of the receiving cavity is 50 ml; And / or, a heating switch is provided at the lower part of the handle; And / or, a display window is provided on the front outer side wall of the main body, and the display window is provided with a display screen for displaying the bone wax temperature and battery power.

Images