Pulse extrusion device used in arthroscopy

Abstract

The pulse extrusion device comprises an air bag, a shell and a connecting pipe, the air bag is sleeved with a detachable and replaceable outer sleeve, the two sides of the lower portion of the outer sleeve are connected with a pair of bandages, and an inflation volume adjusting structure, a pulse inflation structure and a second air pipe are installed in the shell; the inflation volume adjusting structure and the pulse inflation structure are both connected with a second air pipe, and the two ends of the connecting pipe are connected with the air bag and the second air pipe through connecting pieces respectively. According to the pulse extrusion device used in the arthroscopic surgery, the air bag is arranged around the surgical site of a patient, the air inflation amount adjusting structure is arranged to inflate the air bag, tissue around the surgical site of the patient can be properly extruded, and the air inflation amount adjusting structure can accurately control the air inflation amount of the air bag; therefore, the requirements of different stages of the surgery on the extrusion force are met, and the accuracy and continuity of the surgery operation are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a pulse compression device used in arthroscopic surgery. Background Technology

[0002] During arthroscopic surgery of the knee joint, to ensure a clear surgical field, reduce intraoperative bleeding, assist in intra-articular manipulation, and address the difficulty in completely removing bone and soft tissue debris generated during arthroscopy, it is usually necessary to apply appropriate compression to the tissues surrounding the surgical site. This promotes the drainage of blood, synovial fluid, and residual debris, while maintaining a relatively stable pressure environment within the joint cavity. Traditional compression methods often rely on manual operation by medical staff, applying pressure to the patient's leg by hand or with the aid of simple instruments. However, this method has many drawbacks. Manual compression makes it difficult to precisely control the pressure and frequency. Excessive pressure may damage the patient's limb, while insufficient pressure will not achieve the desired auxiliary surgical effect. Moreover, the strength and frequency of manual compression are difficult to maintain consistently and can vary depending on the fatigue level or operational status of the medical staff, affecting the continuity and precision of the surgery. In addition, prolonged manual compression increases the workload of medical staff, easily leading to fatigue and thus affecting the quality of the surgery.

[0003] To address this issue, we have designed a pulse compression device for use in arthroscopic surgery. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a pulse compression device for use in arthroscopic surgery, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pulse compression device for use in arthroscopic surgery, comprising an air bladder, a housing, and a connecting tube. The air bladder is covered with a removable and replaceable outer sleeve, and a pair of straps are connected to the lower two sides of the outer sleeve. An inflation volume adjustment structure, a pulse inflation structure, and a second trachea are installed inside the housing. Both the inflation volume adjustment structure and the pulse inflation structure are connected to the second trachea. The two ends of the connecting tube are respectively connected to the air bladder and the second trachea through connectors.

[0006] As a preferred embodiment of the present invention, the inflation volume adjustment structure includes an air pump, a first air pipe, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve. The air pump and the first air pipe are both installed inside the outer casing. A tee is connected to both the air pump's inlet and outlet. One of the remaining ports of the inlet tee and the outlet tee are connected to the second air pipe via pipes. The first solenoid valve and the second solenoid valve are respectively installed on these two pipes. The other remaining port of the inlet tee and the other remaining port of the outlet tee are connected to the first air pipe via pipes. The third solenoid valve and the fourth solenoid valve are respectively installed on these two pipes.

[0007] As a preferred embodiment of the present invention, the pulse inflation structure includes a piston cylinder, a fifth solenoid valve, a piston body, a piston rod, a crankshaft, and a servo motor. The piston cylinder and the servo motor are both installed inside the housing. The crankshaft is rotatably installed inside the housing via a bearing seat. The output shaft of the servo motor is connected to the main journal of the crankshaft. The air port of the piston cylinder is connected to a second air pipe via a pipe, and the fifth solenoid valve is installed on the pipe. A piston body is provided inside the piston cylinder, and a piston rod is rotatably connected to the piston body. The other end of the piston rod is rotatably connected to the connecting rod journal of the crankshaft.

[0008] As a preferred technical solution of the present invention, the connector includes an externally threaded tube and an internally threaded tube. The externally threaded tube can be threadedly connected to the internally threaded tube. A sealing ring is provided between the externally threaded tube and the internally threaded tube. The sealing ring is fixed on the externally threaded tube. One end of the connecting tube and the port of the second air tube are both connected to the externally threaded tube. The other end of the connecting tube and the air hole of the airbag are both connected to the internally threaded tube.

[0009] As a preferred embodiment of the present invention, both the airbag and the outer jacket are T-shaped, and Velcro fasteners are fixed to the left and right sides of the upper part of the outer jacket and the two straps. The left and right sides of the upper part of the outer jacket and the two straps can be connected by Velcro fasteners.

[0010] As a preferred embodiment of the present invention, the back of the airbag is fixed with a plurality of evenly distributed snap buttons, and the inner side of the outer jacket is fixed with snap female buttons corresponding to the positions of the snap buttons on the airbag, so that the airbag can be fixed inside the outer jacket by snap buttons.

[0011] As a preferred embodiment of the present invention, the back of the jacket has an opening, through which the airbag can be removed.

[0012] As a preferred embodiment of the present invention, the interior of the housing is provided with a rechargeable power supply for powering the device and a controller for controlling the operation of the device, while the exterior of the housing is provided with an LCD screen and control buttons.

[0013] As a preferred embodiment of the present invention, an electronic airbag pressure gauge is installed on the second trachea near the port.

[0014] As a preferred embodiment of the present invention, the port of the first air tube is located outside the housing, and an air filter is installed at the port of the first air tube.

[0015] Compared with the prior art, the present invention provides a pulse compression device for use in arthroscopic surgery, which has the following beneficial effects:

[0016] 1. The pulse compression device used in this arthroscopic procedure, by setting up an airbag around the patient's surgical site and setting up an inflation volume adjustment structure to inflate the airbag, can appropriately compress the tissues around the patient's surgical site. Moreover, the inflation volume adjustment structure can precisely control the inflation volume of the airbag, thereby meeting the compression force requirements at different stages of the surgery and improving the accuracy and continuity of the surgical operation.

[0017] 2. The pulse compression device used in this arthroscopic procedure, by setting a pulse inflation structure, can periodically inflate and deflate the airbag, so that the airbag produces a pulse compression effect. Compared with traditional continuous compression, this pulse compression can more effectively promote the drainage of blood and joint fluid in the knee joint cavity, providing a clearer field of vision for the operation.

[0018] 3. The pulse compression device used in this arthroscopic procedure has a replaceable outer cover on the outside of the balloon, which allows medical staff to change the cover in a timely manner according to the surgical situation, reducing the risk of cross-infection and improving the safety of the surgery. Attached Figure Description

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the airbag inflation structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the inflation volume adjustment structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the pulse inflation structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the connector structure of the present invention.

[0024] Reference numerals: 1. Airbag; 2. Outer shell; 3. Connecting tube; 4. Outer sleeve; 5. Strap; 6. Inflation volume adjustment structure; 61. Air pump; 62. First air tube; 63. First solenoid valve; 64. Second solenoid valve; 65. Third solenoid valve; 66. Fourth solenoid valve; 7. Pulse inflation structure; 71. Piston cylinder; 72. Fifth solenoid valve; 73. Piston body; 74. Piston rod; 75. Crankshaft; 76. Servo motor; 8. Second air tube; 9. Connector; 91. External threaded tube; 92. Internal threaded tube. Detailed Implementation

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1: Please refer to Figure 1-Figure 5 This embodiment provides a pulse compression device for arthroscopic surgery. Its overall structure includes an airbag 1, a housing 2, and a connecting tube 3. The airbag 1 is covered by a removable and replaceable outer cover 4. The outer cover 4 is T-shaped, with a pair of straps 5 connected to its lower sides. Velcro fasteners are fixed to the straps 5. Velcro fasteners are also fixed to the upper left and right sides of the outer cover 4. The airbag 1 is also T-shaped, with multiple evenly distributed snap fasteners on its back. Snap fasteners are fixed to corresponding positions on the inner side of the outer cover 4. The airbag 1 is fixed inside the outer cover 4 by the snap fasteners. The Velcro straps allow the upper part of the outer jacket 4 to be tied to the patient's thigh, and the lower part of the outer jacket 4 can be tied to the patient's calf via the Velcro straps on the straps 5, thus wrapping the airbag 1 around the patient's leg while exposing the patient's knee joint to facilitate arthroscopic surgery. The back of the outer jacket 4 has an opening through which the airbag 1 can be removed for easy replacement of the outer jacket 4 on the airbag 1. The outer shell 2 contains an inflation volume adjustment structure 6, a pulse inflation structure 7, and a second air tube 8, which is connected to the airbag 1 via a connecting tube 3.

[0027] The inflation volume adjustment structure 6 includes an air pump 61, a first air pipe 62, a first solenoid valve 63, a second solenoid valve 64, a third solenoid valve 65, and a fourth solenoid valve 66. The air pump 61 and the first air pipe 62 are installed inside the outer casing 2. The air pump 61 has a tee connection at both its inlet and outlet. The remaining ports of the inlet and outlet tee are connected to the second air pipe 8 via pipes. The first solenoid valve 63 and the second solenoid valve 64 are installed on these two pipes, respectively. The remaining ports of the inlet and outlet tee are connected to the first air pipe 62 via pipes. The third solenoid valve 65 and the fourth solenoid valve 66 are installed on these two pipes, respectively. The first air tube 62 port is located outside the outer casing 2. An air filter is installed at the port to filter the air entering the air pump 61. By setting the air pump 61 in conjunction with four solenoid valves, the inflation and deflation of the airbag 1 can be controlled, thereby adjusting the inflation amount of the airbag 1. When the first solenoid valve 63 and the fourth solenoid valve 66 are closed, and the second solenoid valve 64 and the third solenoid valve 65 are open, the air pump 61 can pump outside air into the airbag 1, thereby inflating the airbag 1. When the first solenoid valve 63 and the fourth solenoid valve 66 are open, and the second solenoid valve 64 and the third solenoid valve 65 are closed, the air pump 61 can pump the air out of the airbag 1, thereby deflating the airbag 1.

[0028] The pulse inflation structure 7 includes a piston cylinder 71, a fifth solenoid valve 72, a piston body 73, a piston rod 74, a crankshaft 75, and a servo motor 76. The piston cylinder 71 and the servo motor 76 are installed inside the housing 2. The crankshaft 75 is rotatably installed inside the housing 2 via a bearing seat. The output shaft of the servo motor 76 is connected to the main journal of the crankshaft 75. The air port of the piston cylinder 71 is connected to the second air pipe 8 through a pipe. The fifth solenoid valve 72 is installed on the pipe. The piston body 73 is set inside the piston cylinder 71. The piston rod 74 is rotatably connected to the piston body 73. The other end of the piston rod 74 is rotatably connected to the connecting rod journal of the crankshaft 75. The servo motor 76 can drive the crankshaft 75 to rotate. Through the transmission between the crankshaft 75 and the piston rod 74, the reciprocating motion of the piston body 73 in the piston cylinder 71 can be controlled, thereby periodically inflating and deflating the airbag 1 to achieve pulse inflation of the airbag 1.

[0029] The outer casing 2 has a rechargeable power supply inside to power the device. The outer casing 2 also has a controller inside to control the operation of the device. The outer casing 2 has an LCD screen and control buttons on the outside to facilitate operation and viewing of the device status by medical staff. An electronic airbag pressure gauge is installed on the second air tube 8 near the port to monitor the pressure inside the airbag 1 in real time and transmit the pressure data to the controller. The controller automatically adjusts the working status of the air pump 61 and the opening and closing of the solenoid valve according to the set pressure value and the actual pressure value to achieve precise inflation control.

[0030] Example 2: Based on Example 1, this example further supplements the connection method of the connecting tube 3. Both ends of the connecting tube 3 are connected to the airbag 1 and the second air tube 8 through connectors 9. The connector 9 includes an external threaded tube 91 and an internal threaded tube 92. The external threaded tube 91 can be threaded onto the internal threaded tube 92. A sealing ring is set between the two and fixed to the external threaded tube 91. One end of the connecting tube 3 and the port of the second air tube 8 are both connected to the external threaded tube 91, and the other end of the connecting tube 3 and the air hole of the airbag 1 are both connected to the internal threaded tube 92. In actual use, the airbag 1 and the second air tube 8 can be directly connected together through the connector 9, and the two connecting tubes 3 can also be connected together through the connector 9. Therefore, in actual use, the number of connecting tubes 9 between the airbag 1 and the second air tube 8 can be increased or decreased according to actual use needs.

[0031] Example 3: The pulse compression device used in arthroscopic surgery in this example has a similar overall structure to that in Example 1, but with some improvements in details. A temperature sensor is added inside the outer shell 2 to monitor the internal temperature of the device. Heat dissipation holes are opened on the outer shell 2, and a cooling fan is installed. When the internal temperature of the device is too high, the controller automatically starts the cooling fan to lower the internal temperature and ensure the normal operation of the device. The connecting tube 3 is a flexible hose, which allows medical staff to adjust the position and angle of the device according to the needs of the surgery. Reinforcing ribs are installed inside the hose to improve its strength and durability and prevent it from breaking during bending. In the inflation volume adjustment structure 6, the air pump 61... The inflation rate is adjustable. Medical staff can adjust the power of the air pump 61 through the control button according to the needs of different stages of surgery, so as to more accurately control the inflation volume. In the pulse inflation structure 7, the servo motor 76 adopts an adjustable speed motor. Medical staff can adjust the speed of the servo motor 76 through the control button according to the surgical requirements, thereby changing the rotation speed of the crankshaft 75 and adjusting the frequency of pulse inflation. The LCD screen on the outside of the outer shell 2 adopts a touch LCD screen. Medical staff can operate directly on the screen to set parameters such as inflation volume and pulse frequency, making operation more convenient. The control button adopts a waterproof design to prevent liquid from splashing onto the button during surgery, which may cause short circuits or misoperation.

[0032] Procedure: During arthroscopic surgery, medical staff fix the airbag 1 and the outer sheath 4 together to the patient's knee joint using straps 5 and Velcro. According to the surgical requirements, the inflation volume and pulse frequency of the airbag 1 are set by the control button. Then, the device is started, and the air pump 61 works. By controlling the opening and closing of the first solenoid valve 63, the second solenoid valve 64, the third solenoid valve 65, and the fourth solenoid valve 66, the inflation volume is adjusted. At the same time, the servo motor 76 drives the crankshaft 75 to rotate. The crankshaft 75 drives the piston body 73 to reciprocate within the piston cylinder 71 through the piston rod 74, realizing pulse inflation and causing the airbag 1 to produce a pulse compression effect to assist the surgery.

[0033] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pulse compression device for use in arthroscopic surgery, comprising an air bladder (1), a housing (2), and a connecting tube (3), characterized in that: The airbag (1) is covered with a removable and replaceable outer cover (4). A pair of straps (5) are connected to the lower two sides of the outer cover (4). The inner shell (2) is equipped with an inflation volume adjustment structure (6), a pulse inflation structure (7), and a second air tube (8). The inflation volume adjustment structure (6) and the pulse inflation structure (7) are both connected to the second air tube (8). The two ends of the connecting tube (3) are connected to the airbag (1) and the second air tube (8) respectively through connectors (9).

2. The pulse compression device for use in arthroscopic surgery according to claim 1, characterized in that: The inflation volume adjustment structure (6) includes an air pump (61), a first air pipe (62), a first solenoid valve (63), a second solenoid valve (64), a third solenoid valve (65), and a fourth solenoid valve (66). The air pump (61) and the first air pipe (62) are both installed inside the outer casing (2). The air pump (61) has a tee connected to its air inlet and air outlet. One of the remaining ports of the air inlet tee and the other of the air outlet tee are connected to the second air pipe (8) through pipes. The first solenoid valve (63) and the second solenoid valve (64) are installed on these two pipes respectively. The other port of the air inlet tee and the other port of the air outlet tee are connected to the first air pipe (62) through pipes. The third solenoid valve (65) and the fourth solenoid valve (66) are installed on these two pipes respectively.

3. The pulse compression device for use in arthroscopic surgery according to claim 1, characterized in that: The pulse inflation structure (7) includes a piston cylinder (71), a fifth solenoid valve (72), a piston body (73), a piston rod (74), a crankshaft (75), and a servo motor (76). The piston cylinder (71) and the servo motor (76) are both installed inside the housing (2). The crankshaft (75) is rotatably installed inside the housing (2) through a bearing seat. The output shaft of the servo motor (76) is connected to the main journal of the crankshaft (75). The air port of the piston cylinder (71) is connected to the second air pipe (8) through a pipe, and the fifth solenoid valve (72) is installed on the pipe. The piston body (73) is provided inside the piston cylinder (71). The piston rod (74) is rotatably connected to the piston body (73). The other end of the piston rod (74) is rotatably connected to the connecting rod journal of the crankshaft (75).

4. The pulse compression device for use in arthroscopic surgery according to claim 1, characterized in that: The connector (9) includes an external threaded tube (91) and an internal threaded tube (92). The external threaded tube (91) can be threaded onto the internal threaded tube (92). A sealing ring is provided between the external threaded tube (91) and the internal threaded tube (92). The sealing ring is fixed on the external threaded tube (91). One end of the connecting tube (3) and the port of the second air tube (8) are both connected to the external threaded tube (91). The other end of the connecting tube (3) and the air hole of the airbag (1) are both connected to the internal threaded tube (92).

5. The pulse compression device for use in arthroscopic surgery according to claim 1, characterized in that: Both the airbag (1) and the outer cover (4) are T-shaped. Velcro fasteners are fixed to the left and right sides of the upper part of the outer cover (4) and the two straps (5). The left and right sides of the upper part of the outer cover (4) and the two straps (5) can be connected by Velcro fasteners.

6. The pulse compression device for use in arthroscopic surgery according to claim 1, characterized in that: The back of the airbag (1) is fixed with a number of evenly distributed snap buttons, and the inner side of the outer jacket (4) is fixed with snap female buttons corresponding to the positions of the snap buttons on the airbag (1). The airbag (1) can be fixed inside the outer jacket (4) by snap buttons.

7. The pulse compression device for use in arthroscopic surgery according to claim 1, characterized in that: The back of the outer jacket (4) has an opening, through which the airbag (1) can be removed.

8. The pulse compression device for use in arthroscopic surgery according to claim 1, characterized in that: The interior of the outer casing (2) is provided with a rechargeable power supply for powering the device and a controller for controlling the operation of the device, while the exterior of the outer casing (2) is provided with an LCD screen and control buttons.

9. The pulse compression device for use in arthroscopic surgery according to claim 1, characterized in that: An electronic airbag pressure gauge is installed on the second trachea (8) near the port.

10. A pulse compression device for use in arthroscopic surgery according to claim 2, characterized in that: The port of the first air pipe (62) is located outside the outer casing (2), and an air filter is installed at the port of the first air pipe (62).

Images