Headstock with multi-position fixing structure special for cardiac surgery

Abstract

The invention relates to the technical field of medical instruments, in particular to a special cardiac surgery head frame with a multi-body-position fixing structure, which comprises a mounting frame, a rotating rod is rotatably connected to the inner wall of the mounting frame, two round tubes are rotatably connected to the outer wall of the rotating rod, and a first fixing block and a second fixing block are fixedly connected to the outer walls of the round tubes respectively. Electromagnets are fixedly connected to the positions, corresponding to the first fixing block and the second fixing block, of the inner wall of the mounting frame, and through magnetic attraction control and arc-shaped limiting block design, switching of three modes of synchronous rotation of the head and the body, independent rotation of the head and independent rotation of the body is achieved; when the head is placed, a conical linkage structure is triggered by means of gravity, a supplementary air bag is extruded to supply air to a fixed air bag, placing, namely clamping and air bag attaching to the head are achieved, the risk of pressure sores is reduced, a fourth spring can drive the air bag to automatically return air and reset, manual operation is not needed, and operation is convenient. And the operation interference during the operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a head frame for cardiac surgery with a multi-position fixation structure. Background Technology

[0002] Cardiac surgery is a branch of cardiothoracic surgery, which mainly studies trauma to the heart and great vessels, pericardial diseases, congenital heart disease, acquired valvular heart disease, ischemic heart disease, cardiac tumors, and great vessel diseases. It covers interventional treatment techniques, surgical treatment of arrhythmias, cardiac pacing and defibrillator implantation, and other fields.

[0003] Cardiac surgery demands extremely high precision in patient positioning, requiring frequent adjustments to the head and body posture to expose the surgical field and avoid vascular and nerve damage. However, rotating the patient only allows for independent fine-tuning of the head or body, failing to meet the needs of synchronous rotation to maintain posture and independent adjustment to optimize the surgical field. This can easily lead to relative displacement of the head and body, increasing the risk of cervical spine injury. When limiting the rotation equipment, manual screw locking or strap clamping is relied upon, resulting in uneven fixation force. Prolonged surgery can easily lead to scalp pressure sores. To address these issues, this invention proposes a head frame specifically designed for cardiac surgery with a multi-position fixation structure. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a head frame specifically designed for cardiac surgery with a multi-position fixation structure.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a head frame for cardiac surgery with a multi-position fixation structure, including a mounting frame, wherein a rotating rod is rotatably connected to the inner wall of the mounting frame, and two round tubes are rotatably connected to the outer wall of the rotating rod; The outer walls of the circular tubes are respectively fixedly connected to a first fixing block and a second fixing block. The inner walls of the mounting bracket are fixedly connected to electromagnets at positions corresponding to the first and second fixing blocks. Magnetic blocks are fixedly connected to the sides of the first and second fixing blocks near the electromagnets. A first cavity is formed through one side of the outer wall of the first fixing block. A first arc-shaped limiting block is slidably connected to the inner wall of the first cavity. A first arc-shaped hole is formed through one side of the outer wall of the second fixing block. The first arc-shaped limiting block extends through into the first arc-shaped hole. The interior of the rotating rod is formed with second cavities corresponding to the positions of the two circular tubes. A second arc-shaped limiting block is slidably connected to the inner wall of the second cavity. A second arc-shaped hole is formed through the inner wall of the circular tube. The second arc-shaped limiting block extends through into the second arc-shaped hole.

[0006] Specifically, the upper surface of the first fixed block is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a placing block, the upper surface of the placing block is fixedly connected with a cotton pad, the inside of the first fixed block is symmetrically provided with a sliding cavity, the inner wall of the sliding cavity is slidably connected with a conical sliding block and a conical top block, the conical sliding block is in abutment with the conical top block, the two ends of the placing block extend into the sliding cavity and are fixedly connected with the conical sliding block, one side of the outer wall of the conical sliding block is fixedly connected with a T-shaped block, the T-shaped block extends out of the sliding cavity and is fixedly connected with a fixed air bag, and the sliding cavity is fixedly connected with a supplementary air bag below the conical top block.

[0007] Specifically, one side of the outer wall of the mounting frame is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with the rotating rod through a shaft coupling.

[0008] Specifically, the inner bottom wall of the first cavity is fixedly connected with a first spring, and one end of the first spring is fixedly connected with the first arc-shaped limiting block.

[0009] Specifically, the inner bottom wall of the second cavity is fixedly connected with a second spring, and one end of the second spring is fixedly connected with the second arc-shaped limiting block.

[0010] Specifically, the fixed air bag and the supplementary air bag are connected through a connecting pipe with a one-way valve, for inflating the supplementary air bag.

[0011] Specifically, the inner wall of the supplementary air bag is fixedly connected with a fourth spring, and the fourth spring is used for assisting the supplementary air bag to reset and inflate.

[0012] Specifically, the upper surface of the second fixed block is fixedly connected with a bed plate, and the upper surface of the bed plate is paved with a mattress.

[0013] The beneficial effects of the present application are as follows: (1) The headrest special for cardiac surgery of the multi-position fixing structure can realize three mode switching of synchronous rotation of the head and the body, independent rotation of the head and independent rotation of the body, is suitable for the needs of different surgical fields such as lateral position mitral valve surgery and semi-recumbent position extracorporeal circulation surgery, the conical linkage structure is triggered by gravity when the head is placed, the supplementary air bag is extruded to supply air to the fixed air bag, the placing is clamped, the air bag is attached to the head to reduce the risk of pressure sores, the fourth spring can drive the air bag to automatically reset and inflate, manual operation is not needed, and operation interference in the operation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] The present application will be further described below in combination with the drawings and examples.

[0015] Figure 1The front view structure schematic of the head frame for the heart surgery special purpose of the multi-body position fixing structure provided by the application; Figure 2 The side view structure schematic of the head frame for the heart surgery special purpose of the multi-body position fixing structure provided by the application; Figure 3 The electromagnet and magnetic attraction block installation position structure schematic of the head frame for the heart surgery special purpose of the multi-body position fixing structure provided by the application; Figure 4 The second fixing block cross-sectional view structure schematic of the head frame for the heart surgery special purpose of the multi-body position fixing structure provided by the application; Figure 5 The first fixing block and the second fixing block cross-sectional view structure schematic of the head frame for the heart surgery special purpose of the multi-body position fixing structure provided by the application; Figure 6 The first fixing block cross-sectional view structure schematic of the head frame for the heart surgery special purpose of the multi-body position fixing structure provided by the application; Figure 7 The Figure 4 enlarged structure schematic of the head frame for the heart surgery special purpose of the multi-body position fixing structure provided by the application; Figure 8 The Figure 5 enlarged structure schematic of the head frame for the heart surgery special purpose of the multi-body position fixing structure provided by the application.

[0016] In the figure: 1, mounting frame; 2, rotating rod; 3, circular pipe; 4, first fixing block; 5, second fixing block; 6, electromagnet; 7, first arc-shaped limiting block; 8, magnetic attraction block; 9, second arc-shaped limiting block; 10, placing block; 11, cotton pad; 12, conical sliding block; 13, conical top block; 14, T-shaped block; 15, fixed air bag; 16, supplementary air bag; 17, driving motor; 18, first spring; 19, second spring; 21, fourth spring; 22, bed plate; 23, bed pad. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application is further described below in combination with specific embodiments.

[0018] As shown in Figures 1-8 , the application provides the following technical solutions: Embodiment one: a head frame for heart surgery special purpose of a multi-body position fixing structure, comprising a mounting frame 1, the inner wall of the mounting frame 1 is rotationally connected with a rotating rod 2, the outer wall of the rotating rod 2 is rotationally connected with two circular pipes 3; The outer wall of the circular tube 3 is fixedly connected with a first fixed block 4 and a second fixed block 5 respectively, the inner wall of the mounting frame 1 is fixedly connected with an electromagnet 6 at positions corresponding to the first fixed block 4 and the second fixed block 5, the side of the first fixed block 4 and the second fixed block 5 close to the electromagnet 6 is fixedly connected with a magnetic attraction block 8, the outer wall of the side of the first fixed block 5 is provided with a first cavity, the inner wall of the first cavity is slidably connected with a first arc-shaped limiting block 7, the outer wall of the side of the second fixed block 5 is provided with a first arc-shaped hole, the first arc-shaped limiting block 7 extends through the first arc-shaped hole, the inside of the rotating rod 2 is provided with a second cavity at positions corresponding to the two circular tubes 3 respectively, the inner wall of the second cavity is slidably connected with a second arc-shaped limiting block 9, the inner wall of the circular tube 3 is provided with a second arc-shaped hole, and the second arc-shaped limiting block 9 extends through the second arc-shaped hole.

[0019] The upper surface of the first fixed block 4 is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a placing block 10, the upper surface of the placing block 10 is fixedly connected with a cotton pad 11, the inside of the first fixed block 4 is symmetrically provided with a sliding cavity, the inner wall of the sliding cavity is slidably connected with a conical sliding block 12, the inner wall of the sliding cavity is slidably connected with a conical top block 13, the conical sliding block 12 abuts against the conical top block 13, the two ends of the placing block 10 extend through the sliding cavity and are fixedly connected with the conical sliding block 12, the outer wall of the side of the conical sliding block 12 is fixedly connected with a T-shaped block 14, the T-shaped block 14 extends out of the sliding cavity and is fixedly connected with a fixed air bag 15, the sliding cavity is fixedly connected with a supplementary air bag 16 below the conical top block 13, the outer wall of the side of the mounting frame 1 is fixedly connected with a driving motor 17, the output end of the driving motor 17 is fixedly connected with the rotating rod 2 through a shaft coupling, the inner bottom wall of the first cavity is fixedly connected with a first spring 18, one end of the first spring 18 is fixedly connected with the first arc-shaped limiting block 7, the inner bottom wall of the second cavity is fixedly connected with a second spring 19, one end of the second spring 19 is fixedly connected with the second arc-shaped limiting block 9, the fixed air bag 15 and the supplementary air bag 16 are connected through a connecting pipe with a check valve, for inflating the supplementary air bag 16, the inner wall of the supplementary air bag 16 is fixedly connected with a fourth spring 21, the fourth spring 21 is used for assisting the supplementary air bag 16 to reset and inflate, the upper surface of the second fixed block 5 is fixedly connected with a bed plate 22, and the upper surface of the bed plate 22 is paved with a bed mattress 23. Two DC electromagnets 6 are embedded in the inner wall of the mounting frame 1 corresponding to the positions of the first fixed block 4 and the second fixed block 5, the model of the DC electromagnets 6 is SU0830, the surface of the DC electromagnets 6 is flush with the inner wall of the mounting frame 1 to avoid interference with rotation, the side of the first fixed block 4 and the second fixed block 5 close to the DC electromagnets 6 is correspondingly fixed with a circular magnetic attraction block 8, the material of the circular magnetic attraction block 8 is iron-nickel alloy, the gap between the circular magnetic attraction block 8 and the DC electromagnets 6 is maintained to ensure no contact friction when power is off, the first arc-shaped limiting block 7 is a tapered structure, the first arc-shaped limiting block 7 is embedded in the first cavity of the first fixed block 4, the bottom of the first arc-shaped limiting block 7 is connected with the first spring 18, in the natural state, the top end of the first arc-shaped limiting block 7 protrudes out of the first cavity and is inserted into the first arc-shaped hole of the second fixed block 5, realizing mechanical linkage of the head and the body, the second arc-shaped limiting block 9 is an arc-shaped structure, the second arc-shaped limiting block 9 is located in the second cavity of the rotating rod 2 and is connected with the second spring 19 at the bottom, the second arc-shaped limiting block 9 is embedded in the second arc-shaped hole of the circular tube 3 in the normal state, so that the torque of the rotating rod 2 can be transmitted to the circular tube 3, the driving motor 17 is a servo motor, the model of the driving motor 17 is 110ST-M04030, and the driving motor 17 is rigidly connected with the rotating rod 2 through a shaft coupling, the placement block 10 is an arc-shaped plastic block suitable for the curve behind the head, and the bottom of the placement block 10 is slidably connected with the sliding groove of the first fixed block 4 through a sliding block, so that the pitch angle of the head can be adjusted, the cotton pad 11 is thick medical memory cotton, the surface of which is covered with an antibacterial silica gel film, symmetrical sliding cavities are formed in the two sides of the first fixed block 4, the tapered sliding block 12 is attached to the inclined surface of the tapered top block 13, when the placement block 10 moves downward, the tapered sliding block 12 pushes the tapered top block 13 to move downward, and the supplemental air bag 16 is extruded and supplemented, the fixed air bag 15 is made of medical PVC material and is symmetrically distributed on the two sides of the head, the volume of the supplemental air bag 16 is a certain multiple of that of the fixed air bag 15, the fourth spring 21 inside the supplemental air bag 16 assists in resetting, the connecting pipe is a PU pipe, and the one-way valve is a double-flap type.

[0020] In use, the driving motor 17, the electromagnet 6 and the magnetic attraction block 8 are all connected with an external driving source through a controller, the electromagnet 6 is arranged in a circular ring shape, the patient's head is placed on the cotton pad 11 of the placement block 10, the gravity drives the placement block 10 to move downward, the tapered sliding block 12 extrudes the tapered top block 13 to move towards the supplemental air bag 16, the tapered top block 13 compresses the supplemental air bag 16, the gas in the supplemental air bag 16 is injected into the fixed air bag 15 through the one-way valve, the fixed air bag 15 expands and adheres to the two sides of the head, and the patient's body lies on the bed plate 22 and can be fixed through the fixed rope. When the head and the body need to be rotated synchronously, the electromagnet 6 is de-energized, the first spring 18 pushes the first arc-shaped limiting block 7 to insert into the first arc-shaped hole, so that the first fixed block 4 is connected with the second fixed block 5, the second arc-shaped limiting block 9 is embedded into the second arc-shaped hole under the action of the second spring 19, so that the circular tube 3 is connected with the rotating rod 2, the driving motor 17 is started to drive the rotating rod 2, the rotating rod 2 drives the first fixed block 4 and the second fixed block 5 to rotate synchronously through the circular tube 3, until the preset angle is reached, the electromagnet 6 is energized to attract the magnetic block 8, so that the position of the first fixed block 4 and the second fixed block 5 is locked; When the head needs to be rotated independently, the corresponding electromagnet 6 of the second fixed block 5 is energized, the electromagnet 6 attracts the magnetic block 8 to fix the second fixed block 5, the corresponding electromagnet 6 of the first fixed block 4 is de-energized, so that the first fixed block 4 can be rotated, the driving motor 17 is started to drive the rotating rod 2 to rotate, the second arc-shaped limiting block 9 drives the circular tube 3 below the first fixed block 4 to rotate independently, the circular tube 3 drives the first fixed block 4 to rotate, the first arc-shaped limiting block 7 rotates out of the first arc-shaped hole along with the head, and the first spring 18 is compressed, and the head is rotated to the required position and then energized to lock the first fixed block 4; When the body needs to be rotated independently, the corresponding electromagnet 6 of the first fixed block 4 is energized to fix the head, the corresponding electromagnet 6 of the second fixed block 5 is de-energized, the driving motor 17 is started to drive the rotating rod 2 to rotate, the rotating rod 2 drives the circular tube 3 below the second fixed block 5 to rotate independently through the second arc-shaped limiting block 9, the circular tube 3 drives the second fixed block 5 to rotate, the first arc-shaped limiting block 7 slides out of the first arc-shaped hole, and the first spring 18 is compressed, and the second fixed block 5 is rotated to the required position and then energized to lock the second fixed block 5; After the operation is completed, the head is separated from the placement block 10, the fourth spring 21 drives the supplementary air bag 16 to expand to generate negative pressure, the one-way valve is reversely conducted, the gas in the fixed air bag 15 flows back to the supplementary air bag 16, the supplementary air bag 16 moves to push the conical top block 13 to move back to the original position, the conical top block 13 pushes the conical sliding block 12 and the placement block 10 to move vertically to the original position, and the clamping is released.

[0021] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A head frame for cardiac surgery with a multi-position fixation structure, including a mounting frame (1), wherein a rotating rod (2) is rotatably connected to the inner wall of the mounting frame (1), and two round tubes (3) are rotatably connected to the outer wall of the rotating rod (2). Its features are: The outer wall of the circular tube (3) is fixedly connected to a first fixing block (4) and a second fixing block (5). The inner wall of the mounting bracket (1) is fixedly connected to an electromagnet (6) at the position corresponding to the first fixing block (4) and the second fixing block (5). The first fixing block (4) and the second fixing block (5) are fixedly connected to a magnetic block (8) on the side of the electromagnet (6). A first cavity is opened through one side of the outer wall of the first fixing block (5). A first arc-shaped limiting block (7) is slidably connected to the inner wall of the first cavity. A first arc-shaped hole is opened through one side of the outer wall of the second fixing block (5). The first arc-shaped limiting block (7) extends through into the first arc-shaped hole. The inner wall of the rotating rod (2) is opened through the two circular tubes (3) at the position respectively. A second arc-shaped limiting block (9) is slidably connected to the inner wall of the second cavity. A second arc-shaped hole is opened through the inner wall of the circular tube (3). The second arc-shaped limiting block (9) extends through into the second arc-shaped hole.

2. The cardiac surgery head frame with a multi-position fixation structure according to claim 1, characterized in that: The upper surface of the first fixing block (4) is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to a placement block (10). The upper surface of the placement block (10) is fixedly connected to a cotton pad (11). The interior of the first fixing block (4) is provided with a sliding cavity in a symmetrical shape. The inner wall of the sliding cavity is slidably connected to a conical slider (12). The inner wall of the sliding cavity is slidably connected to a conical top block (13). The conical slider (12) abuts against the conical top block (13). The two ends of the placement block (10) extend through into the sliding cavity and are fixedly connected to the conical slider (12). A T-shaped block (14) is fixedly connected to one side of the outer wall of the conical slider (12). The T-shaped block (14) extends out of the sliding cavity and is fixedly connected to a fixing airbag (15). The sliding cavity is located below the conical top block (13) and is fixedly connected to a supplementary airbag (16).

3. The cardiac surgery head frame with a multi-position fixation structure according to claim 1, characterized in that: A drive motor (17) is fixedly connected to one side of the outer wall of the mounting bracket (1), and the output end of the drive motor (17) is fixedly connected to the rotating rod (2) through a coupling.

4. The cardiac surgery head frame with a multi-position fixation structure according to claim 1, characterized in that: A first spring (18) is fixedly connected to the inner bottom wall of the first cavity, and one end of the first spring (18) is fixedly connected to the first arc-shaped limiting block (7).

5. The cardiac surgery head frame with a multi-position fixation structure according to claim 1, characterized in that: A second spring (19) is fixedly connected to the inner bottom wall of the second cavity, and one end of the second spring (19) is fixedly connected to the second arc-shaped limiting block (9).

6. The cardiac surgery head frame with a multi-position fixation structure according to claim 1, characterized in that: The fixed airbag (15) and the supplementary airbag (16) are connected by a connecting pipe with a one-way valve for inflating the supplementary airbag (16).

7. The cardiac surgery head frame with a multi-position fixation structure according to claim 1, characterized in that: The inner wall of the supplementary airbag (16) is fixedly connected to a fourth spring (21), which is used to assist the supplementary airbag (16) in resetting and inflating.

8. The cardiac surgery head frame with a multi-position fixation structure according to claim 1, characterized in that: The upper surface of the second fixing block (5) is fixedly connected to a bed board (22), and a mattress (23) is laid on the upper surface of the bed board (22).

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