A positioning device applied to laparoscopic surgery

Abstract

The utility model relates to a kind of positioning device applied to laparoscopic surgery, belong to medical instrument technical field, solve the technical problem that the operation hole and observation hole are difficult to accurately position due to the lack of rib arch angle positioning when positioning in existing positioning device;Including positioning column, median line guide rod, hole position positioning assembly and rib arch angle calibration compass;Rib arch angle calibration compass includes first positioning rod and second positioning rod, first positioning rod provides a reference point for measuring rib arch angle, second positioning rod provides another reference point for measuring rib arch angle, in combination with the specific position of positioning column, the rib arch angle of human body can be clearly obtained, can help doctor more reasonably arrange the position of operation hole and observation hole, ensure that surgical instrument has enough activity space in operation process, reduce the mutual interference and collision between instrument, improve the fluency and safety of operation, at the same time, can reduce the damage to surrounding tissue, improve the safety of operation, reduce operation risk.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a positioning device for laparoscopic surgery. Background Technology

[0002] In recent years, laparoscopic surgery has been widely used in many fields such as general surgery, gynecology, and urology. Its core advantages are minimal trauma, rapid recovery, and fewer postoperative complications. The first step of the surgery is to use a trocar to establish observation and operation ports. Precise selection of the trocar port position is crucial for the surgeon to have a clear field of vision, facilitate operation, shorten the operation time, and reduce the number of holes.

[0003] Currently, the selection of trocar port locations mainly follows some guiding opinions and principles, such as the "isosceles triangle rule" and the "concentric circle rule." The "isosceles triangle rule" requires that the laparoscopic and surgeon's left and right hand operating ports be distributed in an inverted equilateral triangle, with other auxiliary operating ports flexibly arranged around the core triangle. The "concentric circle rule" uses the lesion or surgical site as the center, selects a certain distance as the radius to draw an arc, and selects a point on the arc as the trocar placement point.

[0004] Based on the guiding opinions and principles, some research institutions have developed positioning devices for operating ports and positioning ports. However, the existing positioning devices mainly consider the location of the port points, and the positioning of the rib arch angle basically relies on the surgeon's experience. In upper abdominal surgery, this often results in the difficulty of accurately positioning the operating port and observation port. Utility Model Content

[0005] Based on the above analysis, the present invention aims to provide a positioning device for laparoscopic surgery, which solves the technical problem that existing positioning devices lack positioning of the rib arch angle, resulting in difficulty in accurately positioning the operating port and observation port.

[0006] The objective of this utility model is mainly achieved through the following technical solutions:

[0007] A positioning device for laparoscopic surgery includes a positioning post, a midline guide rod, a port positioning assembly, and a costal arch angle calibration gauge. The positioning post is positioned at the xiphoid process apex of the human body. The midline guide rod is positioned on the positioning post. The port positioning assembly is positioned on the midline guide rod and is movable on the midline guide rod to calibrate the positions of the operating port and the observation port. The costal arch angle calibration gauge is positioned on the positioning post.

[0008] The rib arch angle calibration gauge includes a first positioning rod and a second positioning rod. The first and second positioning rods are rotatably mounted on the positioning post. The tail end of the first positioning rod is located on the lower edge of the rib arch on one side of the human body, and the tail end of the second positioning rod is located on the lower edge of the rib arch on the other side of the human body. The angle between the first positioning rod and the second positioning rod is the rib arch angle of the human body.

[0009] Furthermore, the first positioning rod includes a positioning rod body, a collar, and a first positioning handle. The collar is disposed at the first end of the positioning rod body and is sleeved on the positioning post and can rotate along the positioning post. The first positioning handle is disposed at the tail end of the positioning rod body to fit against the lower edge of the rib.

[0010] Furthermore, the positioning rod body includes a body unit and an extension rod, the extension rod being sleeved on the body unit.

[0011] Furthermore, the rib arch angle calibration gauge includes a second suction cup, which is disposed at the tail ends of the first positioning rod and the second positioning rod to adhere to human skin.

[0012] Furthermore, the positioning post includes an upper end cap, a post body, a lower end cap, and a first suction cup. The upper end cap is disposed at the top of the post body, the lower end cap is disposed at the bottom of the post body, and the first suction cup is disposed on the lower end cap to adhere to human skin.

[0013] Furthermore, the midline guide rod is located above the midline of the human body and is parallel to the midline of the human body.

[0014] Furthermore, the centerline guide rod is rotatable along the positioning post.

[0015] Furthermore, the hole positioning assembly includes an operating hole positioner and an observation hole positioner, both of which are mounted on the centerline guide rod and are movable on the centerline guide rod.

[0016] Furthermore, the operating hole positioner includes a first slide, an operating guide rod, a second slide, and a second positioning handle. The first slide is disposed on the centerline guide rod and is movable on the centerline guide rod. The operating guide rod is disposed on the first slide to move together with the first slide. The second slide is disposed on the operating guide rod and is movable on the operating guide rod. The second positioning handle is disposed on the second slide to mark the position of the operating hole.

[0017] Furthermore, the observation hole locator includes a third slide and a third positioning handle. The third slide is disposed on the centerline guide rod and is movable on the centerline guide rod. The third positioning handle is disposed on the third slide to mark the position of the observation hole.

[0018] The technical solution of this utility model can achieve at least one of the following effects:

[0019] (1) The positioning device for laparoscopic surgery described in this utility model includes a positioning column, a midline guide rod, a port positioning component, and a rib arch angle calibration gauge. The rib arch angle calibration gauge includes a first positioning rod and a second positioning rod. The positioning column serves as the reference point for the entire positioning device, providing a reliable basis for subsequent port positioning and rib arch angle measurement. The midline guide rod provides a track for the port positioning component to move. The first positioning rod provides a reference point for measuring the rib arch angle, and the second positioning rod provides another reference point for measuring the rib arch angle. Combined with the specific position of the positioning column, the rib arch angle of the human body can be clearly obtained. Through this angle, doctors can more reasonably arrange the positions of the operating port and the observation port, ensuring that the surgical instruments have sufficient space to move during operation, reducing mutual interference and collision between instruments, improving the smoothness and safety of the operation. At the same time, based on the measured rib arch angle, the first positioning rod, and the second positioning rod, doctors can operate accurately, reduce damage to surrounding tissues, improve the precision and safety of the operation, and reduce surgical risks.

[0020] (2) The positioning device for laparoscopic surgery described in this utility model includes a second suction cup. The second suction cup is attached to the human skin to provide a stable support point for the first positioning rod and the second positioning rod. This ensures that the first positioning rod and the second positioning rod will not be displaced due to external force or changes in the patient's body position when measuring the rib arch angle, thereby improving the accuracy of the measurement.

[0021] (3) The positioning device for laparoscopic surgery described in this utility model includes a first slide, an operation guide rod, a second slide, a second positioning handle, and a telescopic rod. The midline guide rod, the operation guide rod, and the telescopic rod form a three-axis coordinate system. By coordinating the midline guide rod, the operation guide rod, and the telescopic rod, specific coordinate data of the operation port and the observation port can be obtained. Based on the obtained coordinate data and combined with the patient's imaging data (such as CT, MRI, etc.), the surgical path can be simulated and planned in the computer-aided system, which helps doctors determine the best surgical path and avoid damage to tissues and organs.

[0022] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0023] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0024] Figure 1 This is a schematic diagram of the positioning device used in laparoscopic surgery in Embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the first positioning rod in Embodiment 1 of this utility model;

[0026] Figure 3 This is a schematic diagram of the positioning column in Embodiment 1 of this utility model;

[0027] Figure 4 This is a schematic diagram of the operating hole positioner in Embodiment 2 of this utility model;

[0028] Figure 5 This is a schematic diagram of the observation hole locator in Embodiment 2 of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the second positioning handle in Embodiment 3 of this utility model.

[0030] Figure label:

[0031] 1-Positioning post, 11-Upper end cover, 12-Post body, 13-Lower end cover, 14-First suction cup;

[0032] 2- Centerline guide rod;

[0033] 3-Hole positioning assembly, 31-Operating hole positioner, 311-First slide, 312-Operating guide rod, 313-Second slide, 314-Second positioning handle, 3141-Second positioning handle body, 3142-Second positioning handle suction cup, 3143-Water chamber, 315-Telescopic rod, 32-Observation hole positioner, 321-Third slide, 322-Third positioning handle;

[0034] 4-Rib angle calibration gauge, 41-First positioning rod, 411-Positioning rod body, 4111-Body unit, 4112-Extension rod, 412-Collar, 413-First positioning handle, 42-Second positioning rod, 43-Second suction cup. Detailed Implementation

[0035] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0036] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0037] Example 1

[0038] like Figure 1 As shown, this utility model embodiment provides a positioning device for laparoscopic surgery, including a positioning post 1, a midline guide rod 2, a hole positioning component 3, and a costal arch angle calibration gauge 4. The positioning post 1 is set on the xiphoid process apex of the human body, the midline guide rod 2 is set on the positioning post 1, the hole positioning component 3 is set on the midline guide rod 2 and can move on the midline guide rod 2 to calibrate the positions of the operating hole and the observation hole, and the costal arch angle calibration gauge 4 is set on the positioning post 1. The costal arch angle calibration gauge 4 includes a first positioning rod 41 and a second positioning rod 42. The first ends of the first positioning rod 41 and the second positioning rod 42 are rotatably set on the positioning post 1. The tail end of the first positioning rod 41 is located on the lower edge of the costal arch on one side of the human body, and the tail end of the second positioning rod 42 is located on the lower edge of the costal arch on the other side of the human body. The angle between the first positioning rod 41 and the second positioning rod 42 is the costal arch angle of the human body.

[0039] Positioning post 1 serves as the reference point for the entire positioning device. It is positioned at the xiphoid process of the human body, providing support and a reference point for the midline guide rod 2, the hole positioning assembly 3, and the rib arch angle calibration gauge 4. Positioning post 1 provides a reliable foundation for subsequent hole positioning and rib arch angle measurement. The midline guide rod 2 is mounted on positioning post 1 and extends along the anterior midline of the human body, providing a track for the hole positioning assembly 3 to move and be positioned precisely along the midline. The midline guide rod 2 guides the accurate placement of operating and observation holes, helping surgeons obtain optimal field of vision and operating angles during surgery and reducing interference between surgical instruments. The hole positioning assembly 3 is mounted on the midline guide rod 2 and can move along it as needed for surgical calibration. The specific locations of the operating and observation holes are determined by the following: the first positioning rod 41 is rotatably mounted on the positioning post 1, and the tail end is located on the lower edge of the rib arch on one side of the body, providing a reference point for measuring the rib arch angle. The second positioning rod 42 is located on the other side of the body, providing another reference point for measuring the rib arch angle. Combined with the specific location of the positioning post 1, the rib arch angle of the human body can be clearly obtained, solving the problems existing in the prior art. This angle helps the doctor to more rationally arrange the positions of the operating and observation holes, ensuring that the surgical instruments have sufficient room to move during operation, reducing mutual interference and collision between instruments, and improving the smoothness and safety of the operation. At the same time, based on the measured rib arch angle, the first positioning rod 41, and the second positioning rod 42, the doctor can operate accurately, reducing damage to surrounding tissues, improving the precision of the operation, and reducing the surgical risk.

[0040] A preferred embodiment of this utility model is as follows: Figure 2As shown, the first positioning rod 41 includes a positioning rod body 411, a collar 412, and a first positioning handle 413. The collar 412 is located at the beginning of the positioning rod body 411 and is fitted onto the positioning post 1, allowing it to rotate along the positioning post 1. The first positioning handle 413 is located at the end of the positioning rod body 411 to fit against the lower edge of the rib. It should be noted that the second positioning rod 42 can adopt the same structure as the first positioning rod 41. The collar 412 is located at the beginning of the positioning rod body 411 and is used to fit onto the positioning post 1, thereby installing the first positioning rod 41 onto the positioning post 1 and realizing the first positioning. The connection between rod 41 and positioning post 1 allows the doctor to flexibly adjust the angle and position of the first positioning rod 41 according to the patient's anatomical structure and surgical needs by rotating the collar 412, adapting to different surgical scenarios. The first positioning handle 413 is attached to the skin at the lower edge of the rib arch on one side of the body. Through this attachment, the first positioning handle 413 can be accurately positioned on the lower edge of the rib arch, providing a stable reference point for measuring the rib arch angle. As a consideration for stabilizing the first positioning handle 413, the first positioning handle 413 can be attached to the skin at the lower edge of the rib arch through a silicone or latex pad.

[0041] Based on this, such as Figure 2 As shown, the positioning rod body 411 includes a body unit 4111 and an extension rod 4112. The extension rod 4112 is sleeved on the body unit 4111 to extend the body unit 4111. By setting the extension rod 4112, the positioning rod body 411 can be lengthened according to different patient anatomy and surgical needs, increasing the flexibility and adaptability of the device. For example, a locking structure can be set between the extension rod 4112 and the body unit 4111 to fix the length after extension or contraction.

[0042] A preferred embodiment of this utility model is as follows: Figure 2 As shown, the rib arch angle calibration gauge 4 includes a second suction cup 43, which is located at the tail end of the first positioning rod 41 and the second positioning rod 42 to adhere to the human skin. By adhering to the human skin, the second suction cup 43 provides a stable support point for the first positioning rod 41 and the second positioning rod 42. This ensures that the first positioning rod 41 and the second positioning rod 42 will not be displaced due to external forces or changes in the patient's body position when measuring the rib arch angle, thereby improving the accuracy of the measurement.

[0043] A preferred embodiment of this utility model is as follows: Figure 3As shown, the positioning post 1 includes an upper end cap 11, a post body 12, a lower end cap 13, and a first suction cup 14. The upper end cap 11 is located at the top of the post body 12, and the lower end cap 13 is located at the bottom of the post body. The first suction cup is located on the lower end cap to adhere to the human skin. The post body 12 serves as a columnar structure for setting the centerline guide rod 2, the first positioning rod 41, and the second positioning rod 42. The upper end cap 11 and the lower end cap 13 are respectively located at both ends of the post body 12 to prevent the centerline guide rod 2, the first positioning rod 41, and the second positioning rod 42 from falling off the post body 12. The first suction cup 14 is used to adhere to the human skin at the xiphoid process apex position. It fixes the entire positioning post 1 to the human body through suction force, providing a stable reference point for hole positioning.

[0044] A preferred embodiment of this utility model is as follows: Figure 3 As shown, the midline guide rod 2 is located above and parallel to the midline of the human body. Thus, the midline guide rod 2 can extend accurately along the midline of the human body, providing a precise moving track for the hole positioning component 3. As a reference line, the midline guide rod 2 can help doctors determine the positions of the operating hole and observation hole before surgery.

[0045] Based on this, the midline guide rod 2 can rotate along the positioning post 1, thereby better adapting to individual differences among patients and ensuring the accuracy and stability of the device.

[0046] Example 2

[0047] In one specific embodiment of this utility model, based on embodiment 1, the specific structure of the hole positioning component 3 is improved, such as... Figure 1 , Figure 4 and Figure 5 As shown, the hole positioning assembly 3 includes an operating hole locator 31 and an observation hole locator 32. Both the operating hole locator 31 and the observation hole locator 32 are mounted on the midline guide rod 2 and can move on the midline guide rod 2. The operation hole locator 31 and the observation hole locator 32 can move on the midline guide rod 2, allowing the surgeon to flexibly adjust the position of the operating hole along the midline according to the needs of the surgery, so as to achieve the best surgical operation angle and path. As needed, multiple operation hole locators 31 and multiple observation hole locators 32 can be set on the midline guide rod 2.

[0048] A preferred embodiment of this utility model is as follows: Figure 4As shown, the operating hole locator 31 includes a first slide 311, an operating guide rod 312, a second slide 313, and a second positioning handle 314. The first slide 311 is mounted on the centerline guide rod 2 and can move on it. The operating guide rod 312 is mounted on the first slide 311 and moves with it. The second slide 313 is mounted on the operating guide rod 312 and can move on it. The second positioning handle 314 is mounted on the second slide 313 to mark the position of the operating hole. The first slide 311 positions the operating hole. The instrument 31 can be flexibly adjusted along the midline according to surgical needs to ensure the proper position of the operating hole. Additionally, the first slide 311 provides a support point for the operating guide rod 312, ensuring its stability during movement. The operating guide rod 312 provides a track for the second slider. The second slide 313 allows the second positioning handle 314 to be precisely adjusted on the operating guide rod 312 according to surgical needs, ensuring accurate calibration of the operating hole. The contact between the second positioning handle 314 and the human skin accurately determines the position of the operating hole, ensuring the smooth movement of the surgical instruments. The operating port locator 31 can be precisely adjusted along the midline and the operating guide rod 312 via a two-way movement mechanism of the first slide 311 and the second slide 313. In one specific application, the operating guide rod 312 is perpendicular to the midline guide rod 2. As a further improvement, the second slide 313 and the second positioning handle 314 are connected by a telescopic rod 315, which is perpendicular to both the operating guide rod 312 and the midline guide rod 2. Thus, the midline guide rod 2 and the operating guide rod... 312 and telescopic rod 315 constitute a three-axis coordinate system. Furthermore, scales are set on the midline guide rod 2, the operation guide rod 312, and the telescopic rod 315, with the xiphoid process position as the zero point. By coordinating the midline guide rod 2, the operation guide rod 312, and the telescopic rod 315, specific coordinate data of the operation port and the observation port can be obtained. Based on the obtained coordinate data, combined with the patient's imaging data (such as CT, MRI, etc.), the surgical path is simulated and planned in the computer-aided system. This helps doctors determine the optimal surgical path and avoid damage to important tissues and organs.

[0049] A preferred embodiment of this utility model is as follows: Figure 5 As shown, the observation hole locator 32 includes a third slide 321 and a third positioning handle 322. The third slide 321 is mounted on the midline guide rod 2 and can move on the midline guide rod 2. The third positioning handle 322 is mounted on the third slide 321 to mark the position of the observation hole. Through the third slide 321 and the third positioning handle 322, the observation hole locator 32 can be flexibly adjusted along the midline according to the needs of the operation.

[0050] Example 3

[0051] In a specific embodiment of this utility model, based on embodiment 2, the specific structures of the second positioning handle 314 and the third positioning handle 322 are improved, such as... Figure 6 As shown, the second positioning handle 314 includes a second positioning handle body 3141 and a second positioning handle suction cup 3142. The second positioning handle suction cup 3142 is disposed on the second positioning handle body 3141 to be attached to the human body. Based on the same design concept, the third positioning handle 322 may also include a third positioning handle body and a third positioning handle suction cup. The third positioning handle suction cup is disposed on the third positioning handle body to be attached to the human body. For example, the second positioning handle suction cup 3142 and the third positioning handle suction cup may be made of latex or silicone.

[0052] Building upon this, as an improvement adaptable to imaging examinations, the second positioning handle suction cup 3142 has a water-containing cavity 3143 inside for magnetic resonance imaging (MR) imaging. Similarly, the third positioning handle suction cup also has a water-containing cavity inside, thus allowing the patient to wear the device during the examination. It should be noted that, in this embodiment, based on the principles of CT and MR scanning, the positioning device is made of plastic material, such as PP or PVC.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for use in laparoscopic surgery, characterized in that, It includes a positioning post, a centerline guide rod, a hole positioning assembly, and a rib arch angle calibration gauge. The positioning post is set on the xiphoid process of the human body. The centerline guide rod is set on the positioning post. The hole positioning assembly is set on the centerline guide rod and can move on the centerline guide rod to calibrate the position of the operating hole and the observation hole. The rib arch angle calibration gauge is set on the positioning post. The rib arch angle calibration gauge includes a first positioning rod and a second positioning rod. The first and second positioning rods are rotatably mounted on the positioning post. The tail end of the first positioning rod is located on the lower edge of the rib arch on one side of the human body, and the tail end of the second positioning rod is located on the lower edge of the rib arch on the other side of the human body. The angle between the first positioning rod and the second positioning rod is the rib arch angle of the human body.

2. The positioning device for laparoscopic surgery according to claim 1, characterized in that, The first positioning rod includes a positioning rod body, a collar, and a first positioning handle. The collar is disposed at the first end of the positioning rod body and is sleeved on the positioning post and can rotate along the positioning post. The first positioning handle is disposed at the last end of the positioning rod body to fit against the lower edge of the rib.

3. The positioning device for laparoscopic surgery according to claim 2, characterized in that, The positioning rod body includes a body unit and an extension rod, and the extension rod is sleeved on the body unit.

4. The positioning device for laparoscopic surgery according to claim 1, characterized in that, The rib arch angle calibration gauge includes a second suction cup, which is disposed at the tail ends of the first positioning rod and the second positioning rod to adhere to human skin.

5. The positioning device for laparoscopic surgery according to claim 1, characterized in that, The positioning post includes an upper end cap, a post body, a lower end cap, and a first suction cup. The upper end cap is located at the top of the post body, the lower end cap is located at the bottom of the post body, and the first suction cup is located on the lower end cap to adhere to human skin.

6. The positioning device for laparoscopic surgery according to claim 1, characterized in that, The midline guide rod is located above the midline of the human body and is parallel to the midline of the human body.

7. The positioning device for laparoscopic surgery according to claim 1, characterized in that, The centerline guide rod can rotate along the positioning post.

8. The positioning device for laparoscopic surgery according to claim 1, characterized in that, The hole positioning assembly includes an operating hole positioner and an observation hole positioner. Both the operating hole positioner and the observation hole positioner are mounted on the centerline guide rod and are movable on the centerline guide rod.

9. The positioning device for laparoscopic surgery according to claim 8, characterized in that, The operating hole locator includes a first slide, an operating guide rod, a second slide, and a second positioning handle. The first slide is disposed on the centerline guide rod and is movable on the centerline guide rod. The operating guide rod is disposed on the first slide to move together with the first slide. The second slide is disposed on the operating guide rod and is movable on the operating guide rod. The second positioning handle is disposed on the second slide to mark the position of the operating hole.

10. The positioning device for laparoscopic surgery according to claim 8 or 9, characterized in that, The observation hole locator includes a third slide and a third positioning handle. The third slide is disposed on the centerline guide rod and is movable on the centerline guide rod. The third positioning handle is disposed on the third slide to mark the position of the observation hole.

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