An ultrasonic antibacterial device for bone infection

Abstract

The application belongs to the technical field of medical apparatus and discloses an ultrasonic antibacterial device for treating bone infection, which comprises a main control shell and a minimally invasive catheter. The main control shell is internally provided with a guide wire control module, an ultrasonic control module and a medium storage cavity. The minimally invasive catheter is of a double-layer structure and is internally provided with a guide wire. The front end of the minimally invasive catheter is provided with an annular ultrasonic medium cavity, which is used for filling ultrasonic medium solution. The ultrasonic medium cavity is internally provided with an ultrasonic generating assembly arranged in an annular array. The ultrasonic generating assembly is internally provided with a piezoelectric wafer, which is used for realizing electric-acoustic conversion to realize emission and acceptance of ultrasonic waves. When the device is used, the infection site is accurately positioned through the guide wire, ultrasonic waves are emitted through the ultrasonic generating assembly, and the structure of bacterial biofilm is destroyed through ultrasonic cavitation effect, so that the bacterial biofilm is removed and the antibacterial treatment effect is achieved. The device is suitable for bone infection treatment.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an ultrasonic antibacterial device for bone infection. Background Technology

[0002] Bone infection is a serious complication of orthopedic surgery, potentially leading to implant failure, bone destruction, and even requiring repeated surgeries to remove the implant and perform debridement. Current treatments for bone infection primarily rely on antibiotics and external debridement, but these methods have limitations. Antibiotics struggle to penetrate effectively, as bacteria can form biofilms on bone tissue and implant surfaces, significantly reducing antibiotic penetration and making eradication difficult. Surgery often requires the removal of infected tissue or even the implant, increasing patient discomfort and hindering bone healing.

[0003] Therefore, in order to solve the above problems, the present invention proposes an ultrasonic antibacterial device for bone infection, which utilizes the ultrasonic cavitation effect and ultrasonic-enhanced antibacterial effect to effectively remove biofilm and enhance the local anti-infection treatment effect without damaging bone tissue and implants. Summary of the Invention

[0004] The present invention aims to provide an ultrasonic antibacterial device for bone infection, in order to solve the problem of poor efficacy in the treatment of bone infection in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An ultrasonic antibacterial device for bone infection includes a main control shell and a minimally invasive catheter. The main control shell is connected to the minimally invasive catheter. The main control shell includes a guidewire control module, an ultrasonic control module, and an ultrasonic medium storage cavity. A micro-circulation pump is installed in the ultrasonic medium storage cavity, and the micro-circulation pump is controlled by an external pump control module. The minimally invasive catheter is a double-layered tube including a guidewire cavity and a circuit cavity. A guidewire is connected to the guidewire cavity, and the circuit cavity is used for the passage of tubing and wiring. The guidewire is connected to the guidewire control module, which controls the movement of the guidewire. An annular ultrasonic medium cavity is provided at the tip of the minimally invasive catheter. The acoustic medium cavity is connected to the ultrasonic medium storage cavity through a circulation tube located inside the circuit cavity. A micro circulation pump is connected to the circulation tube. Several ultrasonic generating components are connected inside the circuit cavity. The ultrasonic generating components are connected to the outside of the ultrasonic medium cavity. The ultrasonic generating components include a housing, and a piezoelectric crystal is connected inside the housing. The piezoelectric crystal is connected to the ultrasonic control module through a circuit input line. The housing is connected to the ultrasonic control module through a grounding wire. The circuit input line and the grounding wire are located inside the circuit cavity. The ultrasonic control module, the circuit input line, the piezoelectric crystal, the housing, and the grounding wire form the ultrasonic generating circuit.

[0007] Furthermore, the ultrasonic generating components are arranged in a ring array outside the ultrasonic medium cavity, and multiple sets of ultrasonic generating components in the ring array are provided.

[0008] Furthermore, an absorbent filler is provided inside the housing, and the absorbent filler is located on the side of the piezoelectric wafer near the guide wire.

[0009] Furthermore, the ultrasonic medium cavity and ultrasonic medium storage cavity are filled with solutions such as hydrogels and slow-release antibacterial solutions that can improve the local transmission efficiency of ultrasonic energy.

[0010] Furthermore, the ultrasound control module can adjust the frequency of ultrasound generation.

[0011] The principle and beneficial effects of this technical solution: The minimally invasive catheter in this invention has a guidewire inside. The guidewire is controlled by a guidewire control module to move, and the guidewire moves the minimally invasive catheter to reach the bone infection site. The ultrasound control module in this invention is connected to the piezoelectric crystal through a circuit input line. The ultrasound control module controls the piezoelectric crystal to release ultrasound waves of different frequencies. The ultrasound cavitation effect generated by the ultrasound waves forms microbubbles in the infected area. The microbubbles burst and release high-energy microjets, which physically destroy the bacterial biofilm and improve the antibacterial treatment effect. At the same time, this invention also has an ultrasound medium layer. When the ultrasound waves are released, they pass through the ultrasound medium layer, which can effectively improve the transmission efficiency of ultrasound energy and improve the effect of ultrasound therapy. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a cross-sectional view of the interior of the main control housing of the present invention;

[0014] Figure 3 This is an axial sectional view of the tip of the minimally invasive catheter of the present invention;

[0015] Figure 4 This is a longitudinal sectional view of the tip of the minimally invasive catheter of the present invention;

[0016] Figure 5 This is a structural diagram of the ultrasonic generator component of the present invention;

[0017] In the diagram: 1. Main control shell; 2. Minimally invasive catheter; 3. Guidewire control module; 4. Ultrasonic control module; 5. Ultrasonic medium storage cavity; 6. Guidewire cavity; 7. Circuit cavity; 31. Guidewire; 41. Ultrasonic generating assembly; 42. Shell; 43. Piezoelectric crystal; 44. Circuit input line; 45. Grounding wire; 46. Absorbent filler; 51. Miniature circulation pump; 52. Pump control module; 53. Ultrasonic medium cavity; 54. Circulation tube. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0019] like Figures 1-5As shown, an ultrasonic antibacterial device for bone infection includes a main control shell 1 and a minimally invasive catheter 2. The minimally invasive catheter 2 is connected to the front end of the main control shell 1. The main control shell 1 contains a guidewire control module 3, an ultrasonic control module 4, and an ultrasonic media storage cavity 5. The guidewire control module 3 is connected to a guidewire 31 and is used to control the movement of the guidewire 31. The guidewire 31 is disposed inside the minimally invasive catheter 2 and connected to the inner wall of the minimally invasive catheter 2. The minimally invasive catheter 2 has a double-layer tube structure, with the inner layer being a guidewire cavity 6 and the outer layer being a circuit cavity 7. The guidewire cavity 6 is used to accommodate the guidewire 31, and the circuit cavity 7 is used to accommodate a circulation tube 54, a circuit input line 44, and a grounding wire 45. The front end of component 2 is provided with an annular ultrasonic medium cavity 53. The ultrasonic medium cavity 53 is used to fill the ultrasonic medium cavity with solutions such as hydrogel and slow-release antibacterial solution that can improve the local conduction efficiency of ultrasonic energy. The ultrasonic medium cavity 53 is connected to the ultrasonic medium storage cavity 5 through a circulation tube 54. The ultrasonic medium storage cavity 5 is provided with a micro circulation pump 51, which is connected to the circulation tube 54. The micro circulation pump 51 is controlled by an external pump control module 52. By controlling the micro circulation pump 51, the ultrasonic medium solution in the ultrasonic medium storage cavity 5 can be transported to the ultrasonic medium cavity 53, and the ultrasonic medium solution in the ultrasonic medium cavity 53 can be extracted to the ultrasonic medium storage cavity 5. The ultrasonic medium storage cavity 5 is connected to a ring array of six ultrasonic generating components 41 near the guide wire 31. Each group of six ultrasonic generating components 41 is arranged in a total of four groups. Each ultrasonic generating component 41 includes a housing 42. A piezoelectric crystal 43 is connected inside the housing 42. The housing 42 is connected to the ultrasonic control module 4 through the circuit cavity 7 via the grounding wire 45. The piezoelectric crystal 43 is connected to the ultrasonic control module 4 through the circuit cavity 7 via the circuit input line 44. The ultrasonic control module 4, the circuit input line 44, the piezoelectric crystal 43, the housing 42, and the grounding wire 45 form an ultrasonic generating circuit. At the same time, an absorbent filler 46 is provided on the side of the piezoelectric crystal 43 near the guide wire 31. The absorbent filler 46 can absorb the reflected ultrasonic waves and prevent the reflected ultrasonic waves from interfering with the emitted ultrasonic waves.

[0020] The specific implementation process is as follows: First, the guidewire 31 is moved by the guidewire control module 3. Since the guidewire 31 is located inside the minimally invasive catheter 2, the movement of the guidewire 31 will drive the minimally invasive catheter 2 to move. By controlling the guidewire 31, the tip of the minimally invasive catheter 2 is moved to the bone infection site. Then, the ultrasound control module 4 is turned on. The ultrasound control module 4 transmits electrical energy to the piezoelectric crystal 43 through the circuit input line 44. The piezoelectric crystal 43 completes the conversion of electrical energy into mechanical energy and generates ultrasound. The ultrasound destroys the bacterial biofilm at the bone infection site, improves the antibacterial treatment effect, and reduces infection recurrence. At the same time, the ultrasound medium cavity 53 is pre-filled with hydrogel, sustained-release antibacterial solution and other solutions that can improve the local conduction efficiency of ultrasound energy. When releasing ultrasound, the ultrasound transmission efficiency can be enhanced and the treatment effect of ultrasound can be strengthened.

[0021] The above descriptions are merely embodiments of the present invention, and common technical solutions or characteristics known in the schemes are not described in detail here. For those skilled in the art, various modifications and improvements can be made without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An ultrasonic antibacterial device for bone infection, characterized by: The application relates to a main control shell (1) and a minimally invasive catheter (2), wherein the main control shell (1) is connected with the minimally invasive catheter (2), the main control shell comprises a guide wire control module (3), an ultrasonic control module (4) and an ultrasonic medium storage cavity (5), a micro circulating pump (51) is arranged in the ultrasonic medium storage cavity (5), the micro circulating pump (51) is controlled by an external pump control module (52), the minimally invasive catheter (2) is a double-layer pipe comprising a guide wire cavity (6) and a line cavity (7), a guide wire (31) is connected in the guide wire cavity (6), the line cavity (7) is used for passing through a pipe and a line, the guide wire (31) is connected with the guide wire control module (3), the guide wire control module (3) is used for controlling the guide wire (31) to move, a ring-shaped ultrasonic medium cavity (53) is arranged at the front end of the minimally invasive catheter (2), the ultrasonic medium cavity (53) is communicated with the ultrasonic medium storage cavity (5) through a circulating pipe (54), the circulating pipe (54) is located in the line cavity (7), the micro circulating pump (51) is connected with the circulating pipe (54), a plurality of ultrasonic generating assemblies (41) are connected in the line cavity (7), the ultrasonic generating assemblies (41) are connected outside the ultrasonic medium cavity (53), the ultrasonic generating assembly (41) comprises a shell (42), a piezoelectric wafer (43) is connected in the shell (42), the piezoelectric wafer (43) is connected with the ultrasonic control module (4) through a circuit input line (44), the shell (42) is connected with the ultrasonic control module (4) through a grounding line (45), the circuit input line (44) and the grounding line (45) are located in the line cavity (7), and the ultrasonic control module (4), the circuit input line (44), the piezoelectric wafer (43), the shell (42) and the grounding line (45) form an ultrasonic generating circuit.

2. The ultrasonic antimicrobial device for bone infection according to claim 1, characterized in that: The ultrasonic generating assemblies (41) are arranged in a ring array outside the ultrasonic medium cavity (53), and a plurality of groups of the ultrasonic generating assemblies (41) are arranged in a ring array.

3. The ultrasonic antimicrobial device for bone infection according to claim 1, characterized in that: The shell (42) is internally provided with an absorbing filler (46), and the absorbing filler (46) is arranged on the side of the piezoelectric wafer (43) close to the guide wire (31).

4. The ultrasonic antimicrobial device for bone infection according to claim 1, characterized in that: The ultrasonic medium cavity (53) and the ultrasonic medium storage cavity (5) are filled with hydrogel or slow-release antibacterial solution capable of improving the local conduction efficiency of ultrasonic energy.

5. The ultrasonic antimicrobial device for bone infection according to claim 1, wherein: The ultrasonic control module (4) can adjust the ultrasonic generating frequency.

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