CT (Computed Tomography)-guided minimally invasive precise three-dimensional positioning and supporting device

Abstract

The utility model relates to the field of CT (Computed Tomography)-guided minimally invasive surgery, and particularly discloses a CT-guided minimally invasive accurate three-dimensional positioning and supporting device, which comprises a supporting and fixing mechanism, a supporting and fixing mechanism, a supporting and fixing mechanism and a supporting and fixing mechanism, and is characterized in that the supporting and fixing mechanism comprises a supporting rod and a fixing disc fixedly connected to the bottom of the supporting rod; the first guide plate mechanism comprises a first outer frame assembly clamped and embedded in the supporting rod in a sliding mode and a first guide plate assembly arranged in the middle of the first outer frame assembly. The second guide plate mechanism comprises a second outer frame assembly clamped and embedded in the upper side of the supporting rod; through the combination of the three-dimensional positioning and supporting device and the CT scanning technology, a target can be accurately positioned in the body of a patient, and an optimal puncture track and an optimal penetration point can be automatically calculated, so that errors caused by manual operation are greatly reduced, the puncture accuracy is improved, and the treatment or diagnosis accuracy is ensured; due to accurate puncture positioning, the risk of accidentally injuring surrounding normal tissues is reduced, and unnecessary complications and injuries are avoided.

Description

Technical Field

[0001] The utility model belongs to the field of CT-guided minimally invasive surgery, in particular to a CT-guided minimally invasive precise three-dimensional positioning support device. Background Art

[0002] With the advancement of medicine, local tumor treatment is increasingly moving towards precision and minimally invasive treatment. CT-guided interventional diagnosis and treatment is an important component of non-vascular interventional diagnosis and treatment. Due to its advantages in positioning, accurate point determination, simplicity and minimal invasiveness, it is now widely used in clinical practice. CT-guided minimally invasive tumor interventional diagnosis and treatment mainly includes radiofrequency ablation of tumors, microwave ablation, 125I seed implantation of tumors, and puncture biopsy of tumors in various locations. CT-guided minimally invasive intervention for pain mainly includes radiofrequency ablation of the intervertebral disc, radiofrequency modulation of the dorsal root ganglion, radiofrequency ablation or balloon dilatation of the semilunar ganglion, and nerve blocks in various locations.

[0003] Currently, CT-guided minimally invasive non-vascular interventional treatments for tumors and pain mostly still use the traditional manual needle-holding and blind puncture method based on experience, which has low accuracy and lacks effective positioning assistance, fixation and calibration devices. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a CT-guided minimally invasive precise three-dimensional positioning support device to solve the problems in the existing technology of CT-guided minimally invasive non-vascular interventional treatment of tumors and pain, which mostly still adopt the traditional manual needle holding and blind puncture method based on experience, with low accuracy and lack of effective positioning assistance, fixation and calibration devices.

[0005] A CT-guided minimally invasive precise three-dimensional positioning support device, comprising:

[0006] A support and fixing mechanism includes a support rod and a fixing plate fixedly connected to the bottom of the support rod;

[0007] The first guide plate mechanism comprises a first outer frame assembly slidably engaged with the support rod, and a first guide plate assembly disposed in the middle of the first outer frame assembly;

[0008] The second guide plate mechanism includes a second outer frame assembly embedded in the upper side of the support rod, and a second guide plate body arranged in the middle position of the second outer frame assembly;

[0009] The first guide plate assembly and the second guide plate body have the same structure. The first guide plate assembly includes a first guide plate body. A plurality of needle holes are provided on the first guide plate body. A positioning plate is fixedly connected to the outer side of the first guide plate body.

[0010] Preferably, the first outer frame assembly includes a first outer frame body, and a first positioning groove is formed on the upper side of the first outer frame body.

[0011] Preferably, the second outer frame assembly includes a second outer frame body, and a second positioning groove is formed on the upper side of the second outer frame body;

[0012] The first guide plate body is embedded in the first positioning groove through a positioning plate card, and the second guide plate body is embedded in the second positioning groove.

[0013] Preferably, a letter mark and a number mark are provided on the upper edge of the first outer frame body;

[0014] The upper edge of the second outer frame body is provided with a letter mark 2 and a number mark 2;

[0015] A crisscross partition frame is provided on the upper side of the first guide plate body.

[0016] Preferably, the tic-tac-toe dividing frame divides the needle hole into multiple parts corresponding to the positions of letter mark one and number mark one.

[0017] Preferably, a plurality of support rings are fixedly connected to the bottom of the first outer frame body.

[0018] Compared with the existing technology, the utility model has the following beneficial effects: through the combination of a three-dimensional positioning support device and CT scanning technology, the target can be accurately located in the patient's body, and the optimal puncture trajectory and entry point can be automatically calculated, which greatly reduces the errors caused by human operation, improves the accuracy of puncture, and ensures the accuracy of treatment or diagnosis; precise puncture positioning reduces the risk of accidental injury to surrounding normal tissues, avoids unnecessary complications and injuries, and at the same time, through planning in the software through a virtual pointer tool, the puncture path can be simulated and optimized multiple times without actual contact with the patient, further improving the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0021] Figure 3 This is a structural diagram of the first guide plate mechanism of the present invention;

[0022] Figure 4 This is a structural diagram of the second guide plate mechanism of the present invention;

[0023] Figure 5 This is a structural schematic diagram of the first guide plate assembly of the present utility model.

[0024] In the figure: 1. Support and fixing mechanism; 11. Support rod; 12. Fixed disk; 2. First guide plate mechanism; 21. First outer frame assembly; 211. First outer frame body; 212. Positioning groove one; 213. Letter one; 214. Number one; 215. Support ring; 22. First guide plate assembly; 221. First guide plate body; 222. Needle hole; 223. Positioning plate; 224. T-shaped separator; 3. Second guide plate mechanism; 31. Second outer frame assembly; 311. Second outer frame body; 312. Positioning groove two; 313. Letter two; 314. Number two; 32. Second guide plate body. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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] like Figures 1 to 5 As shown:

[0027] Embodiment 1: The present invention provides a CT-guided minimally invasive precise three-dimensional positioning support device, comprising:

[0028] The support and fixing mechanism 1 comprises a support rod 11 and a fixing plate 12 fixedly connected to the bottom of the support rod 11;

[0029] The first guide plate mechanism 2 includes a first outer frame assembly 21 slidably embedded in the support rod 11 and a first guide plate assembly 22 disposed in the middle of the first outer frame assembly 21;

[0030] The second guide plate mechanism 3 includes a second outer frame assembly 31 embedded in the upper side of the support rod 11, and a second guide plate body 32 provided in the middle of the second outer frame assembly 31;

[0031] The first guide plate assembly 22 and the second guide plate body 32 have the same structure. The first guide plate assembly 22 includes a first guide plate body 221. The first guide plate body 221 is provided with a plurality of needle holes 222. A positioning plate 223 is fixedly connected to the outer side of the first guide plate body 221. Figure 5As shown, the needle holes 222 on the first guide plate assembly 22 and the puncture holes on the second guide plate body 32 of the present invention both adopt a square shape with four concave sides, making it easier for the operator to align the puncture needle with the center of the hole, thereby reducing deviation. In addition, this shape can also limit the deviation of the puncture needle to a certain extent, ensuring the accuracy of the puncture path. The concave design makes the material around the puncture hole thicker, thereby improving the overall stability of the guide plate. During the puncture process, even if the puncture needle applies a certain amount of pressure, the guide plate is not easily deformed or shifted, ensuring the stability of the puncture operation. The square shape has a clear visual identification, helping the operator to more clearly see the position and size of the puncture hole. This visual guidance can further improve the accuracy of the puncture and reduce errors during the operation.

[0032] When in use, the bottom of the fixing plate 12 is adhered to the target's body through the adhesive pad; the target area is scanned using a standard scanning device to obtain a detailed image of the area; after the scan is completed, the scanned image is imported into a dedicated software, and the software automatically identifies and detects the three-dimensional positioning support device in the image. Once the three-dimensional positioning support device is successfully detected, the software can further analyze its position and posture in the target area; in the software, a virtual pointer tool is used to plan the puncture trajectory according to the marked point. The software automatically calculates the best entry point to reach the target point based on the position and posture of the three-dimensional positioning support device and the position of the target point, and marks the target object in the patient's body as puncture point C, marks puncture point B on the first guide plate assembly 22, and marks puncture point A on the second guide plate body 32; according to the trajectory and entry point highlighted by the software, the operator can directly reach the target puncture point C after passing the needle through puncture point A on the second guide plate body 32 and puncture point B on the first guide plate assembly 22;

[0033] The first outer frame assembly 21 and the second outer frame assembly 31 can be supported and positioned by the support rods 11 .

[0034] Specifically, the first outer frame assembly 21 includes a first outer frame body 211 , and a positioning groove 1 212 is defined on the upper side of the first outer frame body 211 .

[0035] Specifically, the second outer frame assembly 31 includes a second outer frame body 311 , and a second positioning groove 312 is formed on the upper side of the second outer frame body 311 ;

[0036] The first guide plate body 221 is engaged with the first positioning groove 212 via the positioning plate 223 , and the second guide plate body 32 is engaged with the second positioning groove 312 .

[0037] As can be seen from the above, the first guide plate body 221 can be conveniently fixed by the positioning plate 223 through the first positioning groove 212 , and the second guide plate body 32 can be conveniently fixed by the second positioning groove 312 .

[0038] like Figures 3 to 5 As shown:

[0039] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that a letter mark 213 and a number mark 214 are provided on the upper edge of the first outer frame body 211;

[0040] The upper edge of the second outer frame body 311 is provided with a letter mark 313 and a number mark 314;

[0041] A crisscross partition frame 224 is disposed on the upper side of the first guide plate body 221 .

[0042] Specifically, the tic-tac-toe dividing frame 224 divides the needle hole 222 into multiple parts corresponding to the positions of the letter mark 213 and the number mark 214.

[0043] Specifically, a plurality of support rings 215 are fixedly connected to the bottom of the first outer frame body 211 .

[0044] As can be seen from the above, the letter mark 1 213, the number mark 1 214, the letter mark 2 313, the number mark 2 314 and the tic-tac-toe separator 224 can facilitate the staff to find the corresponding puncture holes, avoid the problem of difficulty in finding the puncture holes due to too many holes, greatly improve the accuracy of puncture, and the height of the first outer frame body 211 can be raised by several support rings 215.

[0045] Application Process:

[0046] Preparation stage:

[0047] Place the patient on the CT scanning bed and ensure that the patient's position is stable.

[0048] The bottom of the fixing plate 12 of the CT-guided minimally invasive precise three-dimensional positioning support device is adhered to the patient's skin through a rubber pad, and is positioned close to the predetermined liver puncture area.

[0049] The liver puncture area is scanned using standard CT scanning equipment to obtain detailed three-dimensional images.

[0050] Image import and positioning:

[0051] Import the scanned image into dedicated image processing software.

[0052] The software automatically identifies and detects the three-dimensional positioning support device in the image, including the first guide plate assembly 22 and the second guide plate body 32.

[0053] In the software, the target puncture point C is marked according to the liver lesion area in the CT image.

[0054] Trajectory planning and marking:

[0055] Use the virtual pointer tool in the software to plan the puncture trajectory according to the target puncture point C.

[0056] The software automatically calculates the best entry point to reach the target puncture point C and marks the puncture point A on the second guide plate body 32 and the puncture point B on the first guide plate assembly 22 .

[0057] Puncture operation:

[0058] The operator sequentially passes the puncture needle through the puncture point A on the second guide plate body 32 and the puncture point B on the first guide plate assembly 22 according to the trajectory and entry point highlighted by the software.

[0059] Under the real-time guidance of CT, the direction and depth of the puncture needle are adjusted until the puncture needle accurately reaches the target puncture point C.

[0060] A liver biopsy is performed to obtain a sample of liver tissue.

[0061] Subsequent processing:

[0062] After the puncture is completed, the puncture needle is pulled out and the puncture point is compressed to stop bleeding and disinfected.

[0063] The obtained liver tissue samples were sent to the pathology department for further analysis.

[0064] All standard parts used in this utility model can be purchased commercially, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, etc. that are mature in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. In addition, the circuit connections adopt conventional connection methods in the existing technology and will not be described in detail here. Any matters not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0065] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0066] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0067] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0069] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0070] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A CT-guided minimally invasive precise three-dimensional positioning support device, characterized in that: include: A supporting and fixing mechanism (1) comprises a supporting rod (11) and a fixing plate (12) fixedly connected to the bottom of the supporting rod (11); A first guide plate mechanism (2) comprises a first outer frame assembly (21) slidably engaged with the support rod (11), and a first guide plate assembly (22) disposed in the middle of the first outer frame assembly (21); The second guide plate mechanism (3) comprises a second outer frame assembly (31) embedded in the upper side of the support rod (11), and a second guide plate body (32) arranged in the middle of the second outer frame assembly (31); The first guide plate assembly (22) and the second guide plate body (32) have the same structure. The first guide plate assembly (22) includes a first guide plate body (221). The first guide plate body (221) is provided with a plurality of needle holes (222). A positioning plate (223) is fixedly connected to the outer side of the first guide plate body (221).

2. A CT-guided minimally invasive precise three-dimensional positioning support device as claimed in claim 1, characterized in that: The first outer frame assembly (21) comprises a first outer frame body (211), and a positioning groove 1 (212) is provided on the upper side of the first outer frame body (211).

3. A CT-guided minimally invasive precise three-dimensional positioning support device as claimed in claim 2, characterized in that: The second outer frame assembly (31) comprises a second outer frame body (311), and a second positioning groove (312) is provided on the upper side of the second outer frame body (311); The first guide plate body (221) is embedded in the first positioning groove (212) through the positioning plate (223), and the second guide plate body (32) is embedded in the second positioning groove (312).

4. A CT-guided minimally invasive precise three-dimensional positioning support device as claimed in claim 3, characterized in that: The upper edge of the first outer frame body (211) is provided with a letter mark (213) and a number mark (214); The upper edge of the second outer frame body (311) is provided with a letter mark two (313) and a number mark two (314); A well-shaped partition frame (224) is provided on the upper side of the first guide plate body (221).

5. The CT-guided minimally invasive precise three-dimensional positioning support device according to claim 4, characterized in that: The well-shaped partition frame (224) divides the needle hole (222) into a plurality of parts corresponding to the positions of the letter mark (213) and the number mark (214).

6. The CT-guided minimally invasive precise three-dimensional positioning support device according to claim 4, characterized in that: A plurality of support rings (215) are also fixedly connected to the bottom of the first outer frame body (211).

Images