Rib traction device for thoracic surgery
By designing an electrically driven rib traction device, the problem of manually retracting ribs was solved, realizing automated rib retraction, improving the safety and efficiency of surgery, and reducing the burden on medical staff and surgical time.
Patent Information
- Application Number
- CN202520458278.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-17
AI Technical Summary
The lack of rib retraction devices in existing technologies means that ribs need to be manually retracted during thoracic surgery, which increases the burden on medical staff and the operation time, and also poses a risk of error.
A rib traction device was designed, comprising a body and first and second traction arms. The first and second traction arms are driven by an electric motor to move closer or further apart at the same speed. Synchronous movement is achieved through a lead screw and sliding sleeve assembly, and a regular polygonal sliding sleeve and guide surface structure is used to ensure stability and accuracy.
It enables automated rib retraction, reduces surgical time and human error, improves surgical safety and efficiency, reduces the physical exertion of medical staff, and ensures a clear surgical field and patient comfort.
Smart Images
Figure CN223682564U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of medical devices, concretely relates to a rib traction device for thoracic surgery. BACKGROUND
[0002] Thoracic surgery is a medical specialty, which is specialized in the diagnosis and treatment of diseases in the chest cavity, mainly esophagus, lung, mediastinum, and breast surgery is also included in this specialty, among which, lung surgery and esophagus surgery are the main ones. For thoracic surgeons, ribs are very familiar. Ribs are arc-shaped small bones, one end of which is connected to the two sides of the spine of the trunk, and the other end is in a state of flaccidity or connected to the sternum in the center of the chest.
[0003] During surgery, thoracic surgeons need to pull open the ribs for corresponding surgery. There is no rib pulling device in the prior art, and the ribs need to be manually pulled open by relevant personnel during surgery. UTILITY MODEL CONTENT
[0004] The utility model provides a rib traction device for thoracic surgery, which aims to solve the problem of manual rib pulling during surgery caused by the lack of rib pulling device in the prior art.
[0005] To solve the above technical problems, the utility model adopts the following technical scheme:
[0006] A rib traction device for thoracic surgery, comprising a body, the body is provided with a first traction arm and a second traction arm at both ends respectively;
[0007] The first traction arm and the second traction arm are both slidingly connected to the body, and the body is provided with a drive assembly for driving the first traction arm and the second traction arm to approach or move away from each other at the same speed;
[0008] The first traction arm and the second traction arm both include an open state and a retracted state. In the open state, the drive assembly drives the first traction arm and the second traction arm to move away from each other at the same speed. In the retracted state, the drive assembly drives the first traction arm and the second traction arm to approach each other at the same speed.
[0009] Further improved scheme: the drive assembly comprises a motor arranged in the body, the drive assembly further comprises a first lead screw for driving the first traction arm to move, a first sliding sleeve slidingly arranged in the body and matched with the first lead screw, the first traction arm is fixed to the first sliding sleeve, the first sliding sleeve is provided with a first screw hole matched with the first lead screw, and a first guide surface is arranged between the first sliding sleeve and the body to prevent the first sliding sleeve from rotating relative to the body.
[0010] Based on the above technical solution: the motor drive makes the movement of the traction arm more rapid and accurate, thereby shortening the operation time. Relieves the burden of medical staff: automated operation reduces the manual operation of medical staff, reduces physical consumption. Enhance the safety of the operation: accurate traction control helps to reduce errors and risks in the operation process.
[0011] Further improved scheme: the cross-sectional shape of the first sliding sleeve is a regular polygon, the side wall of the first sliding sleeve forms the first guide surface, and the machine body is provided with a first sliding hole matched with the first sliding sleeve.
[0012] Based on the above technical solution: the cross-sectional shape of the regular polygon makes the side wall of the first sliding sleeve closely fit the inner wall of the sliding hole when the first sliding sleeve moves in the sliding hole, thereby effectively preventing the rotation of the sliding sleeve during movement. This design ensures the stability of the traction arm during movement and avoids errors caused by rotation. The setting of the first guide surface further enhances the guidance of the sliding sleeve movement. When the sliding sleeve moves in the sliding hole, the guide surface can guide the sliding sleeve to move along the predetermined path, thereby ensuring the linearity and accuracy of the movement of the traction arm. The structure of the regular polygon can effectively disperse the stress received by the sliding sleeve during movement, avoiding structural damage caused by stress concentration. This design improves the durability and reliability of the sliding sleeve and the entire traction device. Due to the stability of the regular polygon structure, the first sliding sleeve can better withstand the load from the traction arm, thereby improving the carrying capacity of the entire device.
[0013] Further improved scheme: the drive assembly further includes a second lead screw for driving the movement of the second traction arm, and a second sliding sleeve slidingly arranged in the machine body and matched with the second lead screw, the second traction arm being fixed to the second sliding sleeve, the second sliding sleeve being provided with a second screw hole matched with the second lead screw, and the second sliding sleeve and the machine body being provided with a second guide surface for preventing the second sliding sleeve from rotating relative to the machine body, and the second lead screw being driven by the motor.
[0014] Based on the above technical scheme: the second lead screw and the first lead screw are driven by the same motor, ensuring the synchronization of their rotation. This design allows the first traction arm and the second traction arm to approach or move away from each other at the same speed, thereby achieving uniform retraction of the ribs. Synchronous driving avoids the problem of uneven force on the ribs or limited surgical field caused by asynchronous movement of the traction arms, improving the accuracy and safety of the operation. The cooperation of the second sliding sleeve and the second lead screw, as well as the design of the second screw hole, ensures high precision of transmission. This design makes the movement of the traction arm more stable and accurate, which helps the doctor to perform fine operations during the operation. The cross-sectional shape of the second sliding sleeve and the setting of the second guide surface effectively prevent the rotation of the sliding sleeve during movement. This design improves the stability of the traction device during the operation, avoiding errors and risks caused by rotation.
[0015] Further improved scheme: the cross-sectional shape of the second sliding sleeve is a regular polygon, the side wall of the second sliding sleeve forms the second guide surface, and the machine body is provided with a second sliding hole matched with the second sliding sleeve.
[0016] Based on the above technical scheme: the cross-sectional shape of the regular polygon allows each edge of the second sliding sleeve to be in close contact with the inner wall of the sliding hole when moving in the sliding hole, effectively preventing rotation of the sliding sleeve during movement. This design ensures the stability of the traction arm during movement, avoids errors caused by rotation, and improves the accuracy and safety of the operation. The structure of the regular polygon can better disperse the stress received by the sliding sleeve during movement, avoiding structural damage caused by stress concentration. This design improves the carrying capacity of the sliding sleeve and the entire traction device, making it better adapt to various load conditions during the operation.
[0017] Further improved scheme: the motor includes an output shaft, the first lead screw and the second lead screw are coaxially arranged with the output shaft, and the first lead screw and the second lead screw are respectively located at both ends of the output shaft.
[0018] Based on the above technical scheme: the coaxial arrangement of the first lead screw and the second lead screw makes the structure of the entire drive assembly more compact, reducing the space occupation. This is particularly important for thoracic surgical instruments, as the space in the operating room is limited, and a compact structure design helps doctors better operate and use the instrument. Since the first lead screw and the second lead screw are coaxially arranged with the output shaft, when the output shaft rotates, both can rotate at the same speed and direction. This synchronous transmission ensures the synchronous movement of the traction arms, improving the accuracy and safety of the operation. Coaxial arrangement reduces error accumulation during transmission, making transmission more accurate and reliable.
[0019] Further improved scheme: the first lead screw and the second lead screw are integrated with the output shaft, the rotation direction of the first lead screw is opposite to that of the second lead screw, and the pitch of the first lead screw is equal to that of the second lead screw.
[0020] Based on the above technical scheme: the first lead screw and the second lead screw are integrated with the output shaft, which avoids the loosening and wear problems that may exist in traditional connection methods, thereby improving the structural strength and stability of the entire transmission system. Since the rotation direction of the first lead screw is opposite to that of the second lead screw, when the output shaft rotates, both can rotate at the same speed but in opposite directions. This design ensures the synchronous reverse movement of the traction arms, improving the accuracy and safety of the operation. The integrated structure reduces the relative movement between transmission components, thereby reducing transmission errors. In addition, the equal pitch ensures the uniformity and consistency of the traction arms during movement, further improving the accuracy of transmission. The integrated structure reduces energy loss during transmission, improving transmission efficiency. This enables the output of the motor to be more effectively converted into movement of the traction arms, thereby improving the working efficiency of the entire traction device.
[0021] Further improved scheme: the first traction arm is welded to the first sliding sleeve, the second traction arm is welded to the second sliding sleeve, the cross-sectional shape of the first traction arm is polygonal, and the cross-sectional shape of the second traction arm is polygonal.
[0022] Based on the above technical scheme: the polygonal cross-section of the traction arm provides a relatively large welding area with the sliding sleeve, which can provide stronger welding strength. This helps to ensure the stability and reliability of the traction arm during the operation, preventing it from falling off or being damaged due to excessive force. The polygonal cross-section design makes the traction arm have higher overall rigidity. This rigid structure can better resist deformation under external force, thereby maintaining the precise position and posture of the traction arm.
[0023] Further improved scheme: the first traction arm is provided with a first contact plate, the side of the first contact plate in contact with the human tissue is provided with a first elastic pad, the second traction arm is provided with a second contact plate, and the side of the second contact plate in contact with the human tissue is provided with a second elastic pad.
[0024] Based on the above technical scheme: the first elastic pad and the second elastic pad are provided, so that the traction arm can produce a certain buffering effect when in contact with the human tissue, reducing the direct compression feeling and improving the comfort of the patient. The material of the elastic pad usually has good elasticity and wear resistance, which can effectively prevent damage to the human tissue during traction and protect the integrity of the surgical site.
[0025] Further improved scheme: the body includes an upper shell and a lower shell, the upper shell is fixed on the lower shell by screws, and the upper shell and the lower shell are provided with mounting grooves for mounting the driving assembly.
[0026] Based on the above technical scheme: the combination design of the upper shell and the lower shell is fixedly connected by screws, so that the overall structure of the body is more solid. This design can withstand various forces and torques generated by the traction device during surgery, ensuring the stability and safety of the surgery. The screw-fixed connection makes the upper shell and the lower shell easy to disassemble when maintenance or replacement is needed, reducing maintenance cost and time.
[0027] The beneficial effects of the utility model are:
[0028] The utility model discloses a driving assembly, which enables the first traction arm and the second traction arm to automatically approach or move away from each other at the same speed without manual operation by the doctor. This not only saves the operation time, but also reduces the human error during the operation. The traction arm can quickly switch between the expanded state and the contracted state to adapt to the needs of different stages of the operation. This flexibility enables the doctor to complete the operation more efficiently.
[0029] Since the driving assembly can ensure that the first traction arm and the second traction arm move at the same speed, the ribs will be subjected to uniform force during the expansion, avoiding the risk of damage due to uneven force. Automatic operation reduces the interference of the doctor's operation during the operation, enabling the doctor to focus more on the operation itself, thereby improving the safety and success rate of the operation. Compared with manual retraction of the ribs, the automatic traction device can more accurately control the expansion force and range, thereby reducing the trauma and damage to the surrounding tissues. In the expanded state, the traction arm can stably fix the ribs, providing the doctor with a clear operation field and operation space, while also helping to reduce the patient's pain and discomfort. BRIEF DESCRIPTION OF DRAWINGS
[0030] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation on the scope. For ordinary skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0031] Fig. 1 It is a sectional view of a rib traction device for thoracic surgery of the utility model.
[0032] Fig. 2 It is an internal structure schematic view of a rib traction device for thoracic surgery of the utility model.
[0033] Fig. 3 is a schematic view of the rib traction device for thoracic surgery in the first traction arm, the second traction arm is in the contraction state.
[0034] Fig. 4 is a schematic view of the rib traction device for thoracic surgery in the first traction arm, the second traction arm is in the expansion state.
[0035] Mark the figure:
[0036] 1-machine body;2-first traction arm;3-second traction arm;4-driving assembly;5-motor;6-first lead screw;7-first sliding sleeve;8-second lead screw;9-second sliding sleeve;10-first contact plate;11-second contact plate;12-first elastic pad;13-second elastic pad;14-upper shell;15-lower shell. Specific embodiments
[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Based on the embodiments of the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0038] Reference Figs. 1 to 4 A rib traction device for thoracic surgery, comprising a machine body 1, the both ends of the machine body 1 are provided with first traction arm 2 and second traction arm 3 respectively;
[0039] The first traction arm 2 and the second traction arm 3 are both slidingly connected to the machine body 1, and the machine body 1 is provided with a driving assembly 4 for driving the first traction arm 2 and the second traction arm 3 to approach or move away from each other at the same speed;
[0040] The first traction arm 2 and the second traction arm 3 both include an expansion state and a contraction state, in the expansion state, the driving assembly 4 drives the first traction arm 2 and the second traction arm 3 to move away from each other at the same speed, in the contraction state, the driving assembly 4 drives the first traction arm 2 and the second traction arm 3 to approach each other at the same speed.
[0041] The driving assembly 4 comprises a motor 5 arranged in the machine body 1, and further comprises a first lead screw 6 for driving the first traction arm 2 to move, and a first sliding sleeve 7 arranged in the machine body 1 and matched with the first lead screw 6, the first traction arm 2 being fixed to the first sliding sleeve 7, the first sliding sleeve 7 being provided with a first screw hole matched with the first lead screw 6, and the first sliding sleeve 7 and the machine body 1 being provided with a first guide surface for preventing the first sliding sleeve 7 from rotating relative to the machine body 1. The cross-sectional shape of the first sliding sleeve 7 is a regular polygon, the side wall of the first sliding sleeve 7 forms the first guide surface, and the machine body 1 is provided with a first sliding hole matched with the first sliding sleeve 7. The cross-sectional shape of the first sliding sleeve 7 can be a regular hexagon.
[0042] The driving assembly 4 further comprises a second lead screw 8 for driving the second traction arm 3 to move, and a second sliding sleeve 9 arranged in the machine body 1 and matched with the second lead screw 8, the second traction arm 3 being fixed to the second sliding sleeve 9, the second sliding sleeve 9 being provided with a second screw hole matched with the second lead screw 8, the second sliding sleeve 9 and the machine body 1 being provided with a second guide surface for preventing the second sliding sleeve 9 from rotating relative to the machine body 1, and the second lead screw 8 being driven by the motor 5. The cross-sectional shape of the second sliding sleeve 9 is a regular polygon, the side wall of the second sliding sleeve 9 forms the second guide surface, and the machine body 1 is provided with a second sliding hole matched with the second sliding sleeve 9. The cross-sectional shape of the second sliding sleeve 9 can be a regular hexagon.
[0043] Specifically, the motor 5 comprises an output shaft, the first lead screw 6 and the second lead screw 8 are coaxially arranged on the output shaft, and the first lead screw 6 and the second lead screw 8 are respectively located at two ends of the output shaft. The first lead screw 6 and the second lead screw 8 are in an integral structure with the output shaft, the rotation directions of the first lead screw 6 and the second lead screw 8 are opposite, and the pitches of the first lead screw 6 and the second lead screw 8 are equal. A rolling bearing can be arranged on the output shaft of the motor 5, that is, a rolling bearing is arranged between the output shaft of the motor and the machine body 1.
[0044] The first traction arm 2 is welded to the first sliding sleeve 7, and the second traction arm 3 is welded to the second sliding sleeve 9. The first traction arm 2 has a polygonal cross-sectional shape, and the second traction arm 3 has a polygonal cross-sectional shape. The first traction arm 2 is provided with a first contact plate 10, and the side of the first contact plate 10 in contact with human tissue is provided with a first elastic pad 12. The second traction arm 3 is provided with a second contact plate 11, and the side of the second contact plate 11 in contact with human tissue is provided with a second elastic pad 13. The machine body 1 comprises an upper shell 14 and a lower shell 15, and the upper shell 14 is fixed to the lower shell 15 by screws. The upper shell 14 and the lower shell 15 are both provided with mounting grooves for mounting the driving assembly 4. The first elastic pad 12 can be bonded to the first contact plate 10, and the second elastic pad 13 can be bonded to the second contact plate 11. A controller for controlling the electric motor 5 can also be provided on the upper shell 14. The controller can comprise a button, and the button is arranged on the upper shell 14. The button is used to control the electric motor 5 through the controller.
[0045] The working principle of the embodiment is as follows:
[0046] Before the operation begins, the first traction arm 2 and the second traction arm 3 are both in a retracted state, closely fitting the two ends of the machine body 1. At this time, the driving assembly 4 is in a standby state, ready to act according to the operation requirements.
[0047] When it is necessary to spread the ribs to expose the operation field of view, the doctor or the assistant will start the driving assembly 4. The driving assembly 4 then drives the first traction arm 2 and the second traction arm 3 away from each other at the same speed. As the traction arms gradually move away, the ribs are evenly spread, providing the doctor with a clear operation field of view and operation space. At this time, the traction arms are in a spread state and remain relatively stable to ensure the smooth progress of the operation. After the ribs are spread, the doctor can perform the corresponding operation. Due to the stable support of the traction arms and the uniform spreading of the ribs, the operation process will become more efficient and safe.
[0048] After the operation is completed, the doctor or the assistant will start the driving assembly 4 again, but this time in the opposite direction. The driving assembly 4 drives the first traction arm 2 and the second traction arm 3 towards each other at the same speed until they return to the initial retracted state.
[0049] The utility model is not limited to the above optional implementation, and the schemes can be combined arbitrarily on the premise of not being contradictory; anyone can derive other various forms of products under the inspiration of the utility model, but regardless of any changes in shape or structure, any technical scheme falling within the scope defined by the claims of the utility model falls within the protection scope of the utility model.
Claims
1. A rib traction device for thoracic surgery, characterized by: The machine body is provided with a first traction arm and a second traction arm at two ends respectively; The first traction arm and the second traction arm are both slidingly connected to the machine body, and the machine body is provided with a driving assembly for driving the first traction arm and the second traction arm to move towards or away from each other at the same speed; The first traction arm and the second traction arm both include an expanded state and a contracted state, in the expanded state, the driving assembly drives the first traction arm and the second traction arm to move away from each other at the same speed, and in the contracted state, the driving assembly drives the first traction arm and the second traction arm to move towards each other at the same speed.
2. A rib traction device for thoracic surgery according to claim 1, characterized in that: The driving assembly includes a motor arranged in the machine body, the driving assembly further includes a first lead screw for driving the first traction arm to move, and a first sliding sleeve slidingly arranged in the machine body and matched with the first lead screw, the first traction arm is fixed to the first sliding sleeve, the first sliding sleeve is provided with a first screw hole matched with the first lead screw, and the first sliding sleeve and the machine body are provided with a first guide surface for preventing the first sliding sleeve from rotating relative to the machine body.
3. A rib traction device for thoracic surgery according to claim 2, characterised in that: The first sliding sleeve has a cross-sectional shape of a regular polygon, the side wall of the first sliding sleeve forms the first guide surface, and the machine body is provided with a first sliding hole matched with the first sliding sleeve.
4. A rib traction device for thoracic surgery according to claim 3, characterized in that: The driving assembly further includes a second lead screw for driving the second traction arm to move, and a second sliding sleeve slidingly arranged in the machine body and matched with the second lead screw, the second traction arm is fixed to the second sliding sleeve, the second sliding sleeve is provided with a second screw hole matched with the second lead screw, and the second sliding sleeve and the machine body are provided with a second guide surface for preventing the second sliding sleeve from rotating relative to the machine body, and the second lead screw is driven by the motor.
5. A rib traction device for thoracic surgery according to claim 4, characterized in that: The second sliding sleeve has a cross-sectional shape of a regular polygon, the side wall of the second sliding sleeve forms the second guide surface, and the machine body is provided with a second sliding hole matched with the second sliding sleeve.
6. A rib traction device for thoracic surgery according to claim 5, characterized in that: The motor includes an output shaft, the first lead screw and the second lead screw are coaxially arranged with the output shaft, and the first lead screw and the second lead screw are respectively located at two ends of the output shaft.
7. A rib traction device for thoracic surgery according to claim 6, characterized in that: The first lead screw and the second lead screw are of an integral structure with the output shaft, the rotation directions of the first lead screw and the second lead screw are opposite, and the pitches of the first lead screw and the second lead screw are equal.
8. A rib traction device for thoracic surgery according to claim 7, characterized in that: The first traction arm is welded to the first sliding sleeve, the second traction arm is welded to the second sliding sleeve, the first traction arm has a cross-sectional shape of a polygon, and the second traction arm has a cross-sectional shape of a polygon.
9. A rib traction device for thoracic surgery according to claim 1, characterized in that: The first traction arm is provided with a first contact plate, one side of the first contact plate in contact with human tissue is provided with a first elastic pad, the second traction arm is provided with a second contact plate, and one side of the second contact plate in contact with human tissue is provided with a second elastic pad.
10. A rib traction device for thoracic surgery according to claim 1, characterized in that: The machine body includes an upper shell and a lower shell, the upper shell is fixed to the lower shell by screws, and the upper shell and the lower shell are both provided with a mounting groove for mounting the driving assembly.